/* roulang page: index */
:root{
  --bg-base:#0A0D10;
  --bg-panel:#121820;
  --bg-elev:#18202A;
  --line:#232C36;
  --line-neon:rgba(35,224,176,.35);
  --neon:#23E0B0;
  --neon-dim:#14A98A;
  --amber:#FFA23A;
  --violet:#7B61FF;
  --paper:#F6F4EF;
  --ink:#1B1F23;
  --ink-2:#4A5259;
  --muted:#8A94A0;
  --text:#D7DEE6;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-media:12px;
  --r-badge:6px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --w:1200px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:68px;
  background:var(--bg-base);
  color:var(--text);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--neon);text-decoration:none}
a:hover{color:var(--amber)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--mono)}
.container{max-width:var(--w);margin:0 auto;padding:0 32px;width:100%}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--amber);color:#1A1206;border-color:var(--amber)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,162,58,.55);color:#1A1206}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-neon);color:var(--neon)}
.btn-ghost:hover{background:rgba(35,224,176,.10);transform:translateY(-1px);color:var(--neon)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:disabled,.btn.is-loading{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-block{width:100%}

/* 标签与徽章 */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;
  font-size:12px;line-height:1;color:var(--muted);
  border:1px solid var(--line);border-radius:var(--r-badge);
  background:rgba(255,255,255,.015);white-space:nowrap;
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;
  font-size:12px;font-weight:600;line-height:1;letter-spacing:.4px;
  border:1px solid var(--line);border-radius:var(--r-badge);
}
.badge-neon{border-color:rgba(35,224,176,.5);color:var(--neon)}
.badge-violet{border-color:rgba(123,97,255,.5);color:#A99BFF}
.badge-amber{border-color:rgba(255,162,58,.5);color:var(--amber)}
.seq{
  writing-mode:vertical-rl;font-family:var(--mono);font-size:12px;
  letter-spacing:.2em;color:var(--neon);opacity:.85;text-transform:uppercase;
}

/* 顶栏 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:var(--bg-base);border-bottom:1px solid var(--line);
  transition:height .2s ease,box-shadow .2s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(35,224,176,.65),transparent);
  opacity:0;transition:opacity .25s ease;
}
.site-header.is-scrolled::after{opacity:1}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:68px;transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--white);font-weight:700;font-size:16px;letter-spacing:.4px}
.logo:hover{color:var(--white)}
.logo-mark{
  width:26px;height:26px;border-radius:7px;flex:none;
  background:linear-gradient(135deg,var(--neon),var(--neon-dim));
  box-shadow:0 0 16px rgba(35,224,176,.35);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px;border:2px solid #06201A;border-radius:2px;
}
.nav{display:flex;align-items:center;gap:22px}
.nav-list{display:flex;align-items:center;gap:20px}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;font-weight:500;color:var(--text);white-space:nowrap;
  transition:color .18s ease,text-shadow .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transition:opacity .18s ease;
  box-shadow:0 0 10px rgba(35,224,176,.75);
}
.nav-link:hover{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55)}
.nav-link:hover::after{opacity:1}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55)}
.nav-link.is-active::after{opacity:1}
.header-tools{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text);cursor:pointer;transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.icon-btn:hover{border-color:var(--line-neon);color:var(--neon);background:rgba(35,224,176,.06)}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.nav-toggle{
  display:none;width:40px;height:40px;background:transparent;
  border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute;left:10px;right:10px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease,top .22s ease;
}
.nav-toggle span:nth-child(1){top:13px}
.nav-toggle span:nth-child(2){top:19px}
.nav-toggle span:nth-child(3){top:25px}
.nav-toggle.is-open span:nth-child(1){top:19px;transform:rotate(45deg);background:var(--neon)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:19px;transform:rotate(-45deg);background:var(--neon)}
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--bg-panel);border-bottom:1px solid var(--line);
  max-height:0;overflow:hidden;transition:max-height .25s ease;
}
.search-panel.is-open{max-height:140px}
.search-inner{display:flex;gap:12px;padding:18px 0}
.search-inner input[type="search"]{
  flex:1;height:44px;padding:0 16px;color:var(--text);font-size:15px;font-family:inherit;
  background:var(--bg-base);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-inner input[type="search"]::placeholder{color:var(--muted)}
.search-inner input[type="search"]:focus{
  outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(35,224,176,.16);
}

/* 首屏 */
.hero{position:relative;overflow:hidden;padding:88px 0 0;background:var(--bg-base)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(120% 80% at 25% 20%,#000 20%,transparent 75%);
  mask-image:radial-gradient(120% 80% at 25% 20%,#000 20%,transparent 75%);
}
.hero::after{
  content:"";position:absolute;top:-25%;left:58%;width:1px;height:150%;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(35,224,176,.5),transparent);
  transform:rotate(17deg);
}
.hero-inner{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:22px;
  font-size:12.5px;letter-spacing:.6px;color:var(--neon);
  border:1px solid var(--line-neon);border-radius:999px;background:rgba(35,224,176,.05);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px var(--neon);display:block}
.hero h1{
  font-size:clamp(30px,4.2vw,48px);font-weight:900;line-height:1.22;letter-spacing:-.5px;color:var(--white);
}
.hero h1 .brand-em{
  background:linear-gradient(96deg,var(--neon) 8%,#8FF3DA 48%,var(--amber) 110%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;max-width:600px;font-size:17px;line-height:1.85;color:var(--muted)}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-media);border:1px solid var(--line-neon);
  filter:saturate(1.02);
}
.hero-stats{
  margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.hero-stat{padding:24px 26px;border-left:1px solid var(--line)}
.hero-stat:first-child{border-left:0;padding-left:0}
.hero-stat b{display:block;font-family:var(--mono);font-size:26px;font-weight:600;color:var(--neon);letter-spacing:-.5px}
.hero-stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.6}

/* 板块 */
.section{padding:var(--sec) 0;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:34px}
.section-head .lead{display:flex;gap:16px;align-items:flex-start}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--white);line-height:1.3;letter-spacing:-.3px}
.section-desc{margin-top:12px;max-width:660px;font-size:16px;line-height:1.85;color:var(--muted)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  color:var(--neon);border-bottom:1px solid var(--line-neon);padding-bottom:2px;white-space:nowrap;
}
.text-link:hover{color:var(--amber);border-bottom-color:rgba(255,162,58,.6)}

/* 最新信息 */
.news-list{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-panel);
}
.news-row{
  position:relative;display:grid;grid-template-columns:168px 1fr 32px;gap:26px;
  padding:22px 26px;border-top:1px solid var(--line);
  transition:background .18s ease,box-shadow .18s ease;
}
.news-row:first-child{border-top:0}
.news-row::after{
  content:"";position:absolute;top:0;right:0;width:2px;height:0;
  background:var(--neon);transition:height .22s ease;
}
.news-row:hover{background:var(--bg-elev);box-shadow:inset 0 0 0 1px var(--line-neon)}
.news-row:hover::after{height:34px}
.news-meta{display:flex;flex-direction:column;gap:10px}
.news-time{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.news-body{min-width:0}
.news-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--white);
}
.news-excerpt{
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  margin-top:8px;font-size:14px;line-height:1.7;color:var(--muted);
}
.news-arrow{
  align-self:center;justify-self:end;font-family:var(--mono);font-size:16px;color:var(--neon);opacity:.6;
  transition:transform .18s ease,opacity .18s ease;
}
.news-row:hover .news-arrow{transform:translateX(3px);opacity:1}
.news-row:hover .news-title{color:var(--neon)}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--bg-panel);padding:56px 24px;text-align:center;
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;
  border:1px solid var(--line-neon);display:flex;align-items:center;justify-content:center;
  color:var(--neon);
}
.empty-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round}
.empty-state p{font-size:15px;color:var(--text)}
.empty-state small{display:block;margin-top:8px;font-size:13px;color:var(--muted)}
.empty-actions{margin-top:22px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* 价值说明（非对称两栏） */
.value-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.paper{
  background:var(--paper);color:var(--ink);border-radius:var(--r-card);
  padding:28px;box-shadow:0 1px 2px rgba(10,15,20,.06),0 10px 28px -14px rgba(10,15,20,.22);
}
.paper h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.5}
.paper p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.paper .mono{font-size:12px;letter-spacing:.14em;color:var(--neon-dim);text-transform:uppercase}
.value-list{display:flex;flex-direction:column;gap:30px}
.value-item{padding-left:24px;border-left:1px solid var(--line-neon)}
.value-item h3{font-size:21px;font-weight:600;color:var(--white);line-height:1.45}
.value-item p{margin-top:8px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:640px}
.value-num{font-family:var(--mono);font-size:12px;color:var(--neon);letter-spacing:.14em;display:block;margin-bottom:8px}

/* 权益对比表 */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-panel);
}
.table-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:760px}
table.compare caption{
  text-align:left;padding:16px 20px;font-size:13px;color:var(--muted);
  border-bottom:1px solid var(--line);background:var(--bg-panel);
}
table.compare thead th{
  height:52px;padding:0 18px;font-size:14px;font-weight:600;color:var(--white);
  background:var(--bg-elev);border-bottom:1px solid var(--line);text-align:center;white-space:nowrap;
}
table.compare thead th:first-child{text-align:left;width:32%}
table.compare tbody td{
  height:52px;padding:0 18px;font-size:14.5px;color:var(--text);
  border-top:1px solid var(--line);text-align:center;
}
table.compare tbody td:first-child{text-align:left;font-weight:600;color:var(--white)}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.015)}
th.col-rec,td.col-rec{
  background:rgba(35,224,176,.045);
  box-shadow:inset 1px 0 0 var(--line-neon),inset -1px 0 0 var(--line-neon);
}
th.col-rec{position:relative}
th.col-rec .rec-tag{
  position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  font-size:11px;font-weight:600;letter-spacing:.6px;color:#06231C;
  background:var(--neon);border-radius:5px;padding:2px 8px;line-height:1.6;white-space:nowrap;
}
.yes{color:var(--neon);font-weight:600}
.no{color:var(--muted)}
.level-cards-mobile{display:none;gap:18px;margin-top:22px}
.level-mini{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-panel);padding:22px;
}
.level-mini h4{font-size:17px;font-weight:700;color:var(--white);margin-bottom:14px}
.level-mini li{
  display:flex;justify-content:space-between;gap:12px;font-size:14px;
  padding:9px 0;border-top:1px solid var(--line);color:var(--muted);
}
.level-mini li:first-child{border-top:0}
.level-mini li b{color:var(--text);font-weight:500}

/* 等级亮点 */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tier-card{
  display:flex;flex-direction:column;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tier-card:hover{transform:translateY(-2px);border-color:var(--line-neon);box-shadow:0 18px 40px -26px rgba(35,224,176,.4)}
.tier-card h3{margin-top:16px;font-size:22px;font-weight:700;color:var(--white);line-height:1.4}
.tier-card .tier-note{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;min-height:48px}
.tier-card ul{margin:20px 0 24px;display:flex;flex-direction:column;gap:12px}
.tier-card li{position:relative;padding-left:22px;font-size:14.5px;line-height:1.75;color:var(--text)}
.tier-card li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border:1px solid var(--neon);border-radius:2px;
}
.tier-card .btn{margin-top:auto}

/* 专属内容预览 */
.locked-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.locked-card{
  position:relative;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--bg-panel);overflow:hidden;
  transition:transform .2s ease,border-color .2s ease;
}
.locked-card:hover{transform:translateY(-2px);border-color:var(--line-neon)}
.locked-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.locked-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.locked-card:hover .cover img{transform:scale(1.03)}
.locked-body{padding:22px 24px 26px}
.locked-body h3{font-size:18px;font-weight:600;color:var(--white);line-height:1.5}
.locked-body p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--muted)}
.lock-overlay{
  position:absolute;right:0;bottom:0;left:0;
  padding:44px 24px 22px;
  display:flex;align-items:flex-end;justify-content:space-between;gap:12px;
  background:linear-gradient(180deg,rgba(10,13,16,0) 0%,rgba(10,13,16,.86) 62%,rgba(10,13,16,.96) 100%);
}
.lock-overlay .lock-txt{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text)}
.lock-overlay svg{width:16px;height:16px;fill:none;stroke:var(--neon);stroke-width:1.8}
.lock-overlay .lock-cta{
  font-size:13.5px;font-weight:600;color:var(--amber);border-bottom:1px solid rgba(255,162,58,.55);
}

/* FAQ */
.faq-wrap{max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:var(--bg-panel);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:var(--line-neon)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--white);line-height:1.6;
}
.faq-q:hover{color:var(--neon)}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;color:var(--neon);
  transition:transform .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:3px;right:3px;top:10px;height:1.6px}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:1.6px;transition:opacity .22s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a .inner{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--muted);opacity:0;transition:opacity .24s ease}
.faq-item.is-open .faq-a .inner{opacity:1}
.faq-foot{margin-top:24px;font-size:14px;color:var(--muted)}
.faq-foot a{margin-left:6px;border-bottom:1px solid var(--line-neon)}

/* CTA 带 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:42px 44px;border:1px solid var(--line-neon);border-radius:var(--r-card);
  background-color:var(--bg-panel);
  background-image:linear-gradient(rgba(35,224,176,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(35,224,176,.055) 1px,transparent 1px);
  background-size:32px 32px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;color:var(--white);line-height:1.4}
.cta-band p{margin-top:10px;font-size:15px;color:var(--muted);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{border-top:1px solid var(--line-neon);background:#080B0E;margin-top:0}
.footer-top{padding:64px 0 46px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--white);font-weight:700;font-size:16px}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:var(--muted);max-width:280px}
.social-row{margin-top:20px;display:flex;gap:10px}
.social-row a{
  width:36px;height:36px;border:1px solid var(--line);border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.social-row a:hover{color:var(--neon);border-color:var(--line-neon);transform:translateY(-2px)}
.social-row svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.footer-col h3{
  font-size:13px;font-family:var(--mono);font-weight:600;letter-spacing:.14em;
  color:var(--white);text-transform:uppercase;
}
.footer-col ul{margin-top:18px;display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .18s ease}
.footer-col a:hover{color:var(--neon)}
.footer-col p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--muted)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom small{font-size:13px;color:var(--muted);line-height:1.7}
.footer-bottom .mono{font-size:12px;letter-spacing:.08em;color:var(--muted)}

/* 响应式 */
@media (max-width:1279px){
  .container{padding:0 28px}
  .nav-list{gap:16px}
  .tier-grid{gap:18px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-figure{order:-1}
  .hero-stats{grid-template-columns:repeat(2,1fr);margin-top:48px}
  .hero-stat{padding:20px;border-left:1px solid var(--line)}
  .hero-stat:nth-child(odd){border-left:0;padding-left:0}
  .hero-stat:nth-child(n+3){border-top:1px solid var(--line)}
  .value-grid{grid-template-columns:1fr;gap:34px}
  .tier-grid{grid-template-columns:repeat(2,1fr)}
  .locked-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:900px){
  body{padding-top:60px}
  .header-inner{height:60px}
  .nav-toggle{display:block}
  .nav{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    display:block;padding:26px 24px 40px;background:var(--bg-base);
    border-top:1px solid var(--line);overflow-y:auto;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .26s ease,opacity .26s ease,visibility .26s;
  }
  .nav.is-open{transform:translateX(0);opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--line);opacity:0;transform:translateY(8px)}
  .nav.is-open .nav-list li{animation:navIn .34s ease forwards}
  .nav.is-open .nav-list li:nth-child(1){animation-delay:.04s}
  .nav.is-open .nav-list li:nth-child(2){animation-delay:.08s}
  .nav.is-open .nav-list li:nth-child(3){animation-delay:.12s}
  .nav.is-open .nav-list li:nth-child(4){animation-delay:.16s}
  .nav.is-open .nav-list li:nth-child(5){animation-delay:.20s}
  .nav.is-open .nav-list li:nth-child(6){animation-delay:.24s}
  @keyframes navIn{to{opacity:1;transform:none}}
  .nav-link{display:block;padding:18px 0;font-size:18px;font-weight:500}
  .nav-link::after{display:none}
  .nav .btn{margin-top:26px}
  .header-tools .btn-primary{display:none}
  .hero{padding-top:56px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 26px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  :root{--sec:56px}
  .container{padding:0 16px}
  .hero h1{font-size:clamp(28px,8vw,34px)}
  .hero-sub{font-size:16px}
  .hero-figure img{aspect-ratio:4/3}
  .news-row{grid-template-columns:1fr;gap:12px;padding:20px}
  .news-arrow{display:none}
  .compact-table{display:none}
  .level-cards-mobile{display:grid}
  .tier-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .cta-actions{width:100%}
  .hero-actions .btn{width:100%}
}
@media (max-width:420px){
  body{font-size:15.5px}
  .hero-stat b{font-size:22px}
  .section-title{font-size:23px}
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0D10;
  --bg-panel:#121820;
  --bg-elev:#18202A;
  --line:#232C36;
  --line-neon:rgba(35,224,176,.35);
  --neon:#23E0B0;
  --neon-dim:#14A98A;
  --amber:#FFA23A;
  --violet:#7B61FF;
  --paper:#F6F4EF;
  --ink:#1B1F23;
  --ink-2:#4A5259;
  --muted:#8A94A0;
  --text:#D7DEE6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-media:12px;
  --radius-badge:6px;
  --shadow-inset:inset 0 1px 0 rgba(255,255,255,.03);
  --shadow-paper:0 1px 2px rgba(10,15,20,.06), 0 10px 28px -14px rgba(10,15,20,.22);
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --dur:.24s;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:#fff;font-weight:700;letter-spacing:-.2px;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px;}
.mono{font-family:var(--font-mono);letter-spacing:.02em;}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg-base);
  border-bottom:1px solid var(--line);
  transition:border-color var(--dur);
}
.site-header.is-scrolled{border-bottom-color:var(--line-neon);}
.header-inner{
  height:68px;display:flex;align-items:center;gap:26px;
  transition:height var(--dur);
}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;letter-spacing:.02em;flex:0 0 auto;}
.logo-mark{
  width:22px;height:22px;display:inline-block;border-radius:6px;
  background:linear-gradient(135deg,var(--neon),var(--neon-dim));
  box-shadow:0 0 0 1px rgba(35,224,176,.45),0 0 14px -2px rgba(35,224,176,.6);
}
.nav{display:flex;align-items:center;gap:24px;margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;font-weight:500;color:var(--muted);
  transition:color var(--dur),text-shadow var(--dur);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--neon);border-radius:2px;opacity:0;transform:scaleX(.4);
  transition:opacity var(--dur),transform var(--dur);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55);}
.nav-link:hover::after{opacity:.7;transform:scaleX(1);}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55);}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.nav>.btn{display:none;}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;color:var(--muted);
  border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:color var(--dur),border-color var(--dur),background var(--dur);
}
.icon-btn:hover{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08);}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);padding:11px 9px;flex-direction:column;justify-content:space-between;}
.nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;transition:transform var(--dur),opacity var(--dur),background var(--dur);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--neon);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--neon);}

/* 搜索面板 */
.search-panel{
  max-height:0;overflow:hidden;background:var(--bg-panel);
  border-top:1px solid transparent;transition:max-height var(--dur),border-color var(--dur);
}
.search-panel.is-open{max-height:120px;border-top-color:var(--line);}
.search-inner{display:flex;gap:12px;padding:16px 0;}
.search-inner input{
  flex:1;min-width:0;background:var(--bg-base);border:1px solid var(--line);
  border-radius:var(--radius-btn);padding:11px 14px;font-size:14.5px;color:var(--text);
  transition:border-color var(--dur),box-shadow var(--dur);
}
.search-inner input::placeholder{color:var(--muted);}
.search-inner input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(35,224,176,.16);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:transform var(--dur),box-shadow var(--dur),background var(--dur),color var(--dur),border-color var(--dur);
  white-space:nowrap;
}
.btn-primary{background:var(--amber);color:#171A1C;box-shadow:var(--shadow-inset);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,162,58,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-neon);color:var(--neon);}
.btn-ghost:hover{background:rgba(35,224,176,.10);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ Hero ============ */
.page-hero{
  position:relative;padding:56px 0 44px;overflow:hidden;
  background:
    linear-gradient(transparent 0 96%, rgba(35,224,176,.06) 96% 100%) 0 0/100% 92px,
    linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 100%) 0 0/92px 100%;
}
.page-hero::before{
  content:"";position:absolute;top:-40px;right:-60px;width:340px;height:340px;
  border-radius:50%;background:radial-gradient(circle,rgba(35,224,176,.10),transparent 68%);
  pointer-events:none;
}
.breadcrumb{margin-bottom:24px;position:relative;}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--line);}
.breadcrumb a{color:var(--muted);transition:color var(--dur);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb [aria-current="page"]{color:var(--text);}
.hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:44px;align-items:center;position:relative;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--neon);
}
.kicker::before{content:"";width:22px;height:1px;background:var(--neon);box-shadow:0 0 10px rgba(35,224,176,.8);}
.page-hero h1{font-size:44px;line-height:1.22;font-weight:900;letter-spacing:-.5px;}
.lede{margin-top:16px;font-size:16.5px;line-height:1.8;color:var(--muted);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-thumb{
  margin:0;border-radius:var(--radius-media);overflow:hidden;
  border:1px solid var(--line-neon);background:var(--bg-panel);
}
.hero-thumb img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-panel);
  box-shadow:var(--shadow-inset);overflow:hidden;
}
.stat{padding:18px 22px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat b{display:block;font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--neon);line-height:1.3;}
.stat span{display:block;margin-top:4px;font-size:12.5px;color:var(--muted);line-height:1.6;}

/* ============ 主体：索引式布局 ============ */
.section-gap{padding:72px 0 0;}
.layout-index{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;padding-top:56px;}
.anchor-nav{position:sticky;top:96px;align-self:start;border-right:1px solid var(--line);padding-right:24px;}
.anchor-title{
  writing-mode:vertical-rl;text-orientation:mixed;
  display:inline-block;padding:6px 0;margin-bottom:14px;
  font-size:12px;letter-spacing:.3em;color:var(--muted);text-transform:uppercase;
}
.anchor-list{display:flex;flex-direction:column;gap:2px;margin-top:10px;}
.anchor-list a{
  display:flex;gap:10px;align-items:baseline;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--muted);border-left:2px solid transparent;
  transition:color var(--dur),background var(--dur),border-color var(--dur);
}
.anchor-list a:hover{color:var(--neon);background:rgba(35,224,176,.06);}
.anchor-list a .num{font-family:var(--font-mono);font-size:12px;color:var(--neon-dim);}
.anchor-list a.is-current{color:var(--neon);border-left-color:var(--neon);background:rgba(35,224,176,.08);text-shadow:0 0 12px rgba(35,224,176,.35);}

.content-flow{display:flex;flex-direction:column;gap:56px;min-width:0;}
.doc-section{scroll-margin-top:104px;}
.section-head{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;}
.section-no{
  font-family:var(--font-mono);font-size:12px;color:var(--neon);
  border:1px solid var(--line-neon);border-radius:4px;padding:3px 7px;
}
.doc-section h2{font-size:30px;line-height:1.3;}
.doc-section h3{font-size:21px;font-weight:600;line-height:1.45;margin:26px 0 10px;color:#EAEFF5;}
.paper{
  background:var(--paper);color:var(--ink);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-paper);font-size:16.5px;line-height:1.85;
  max-width:760px;
}
.paper p{margin-bottom:1.15em;}
.paper strong{color:#0E1216;}
.paper .quote{
  border-left:3px solid var(--neon);background:rgba(35,224,176,.08);
  padding:12px 16px;border-radius:0 8px 8px 0;color:var(--ink-2);margin:16px 0;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  font-size:12px;padding:5px 10px;border:1px solid var(--line);border-radius:var(--radius-badge);
  color:var(--muted);background:var(--bg-panel);
}
.badge{
  display:inline-block;font-size:12px;padding:4px 9px;border-radius:var(--radius-badge);
  border:1px solid var(--line-neon);color:var(--neon);background:rgba(35,224,176,.06);
}
.badge.violet{border-color:rgba(123,97,255,.5);color:#A99BFF;background:rgba(123,97,255,.08);}
.badge.amber{border-color:rgba(255,162,58,.5);color:var(--amber);background:rgba(255,162,58,.08);}

/* ============ 表格 ============ */
.table-wrap{
  margin-top:22px;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow-x:auto;background:var(--bg-panel);box-shadow:var(--shadow-inset);
}
table.spec{width:100%;min-width:680px;border-collapse:collapse;font-size:14.5px;}
table.spec caption{
  text-align:left;padding:16px 18px 12px;font-size:13px;color:var(--muted);
  font-family:var(--font-mono);letter-spacing:.04em;
}
table.spec thead th{
  background:var(--bg-elev);color:#E6EDF4;font-weight:600;font-size:13.5px;
  text-align:left;padding:0 18px;height:52px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.spec td{padding:15px 18px;border-bottom:1px solid var(--line);color:var(--text);vertical-align:top;line-height:1.7;}
table.spec tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.spec tbody tr:last-child td{border-bottom:0;}
table.spec td:first-child,table.spec th:first-child{font-weight:600;color:#fff;}
table.spec .yes{color:var(--neon);font-family:var(--font-mono);}
table.spec .no{color:var(--muted);font-family:var(--font-mono);}
table.spec .fig{font-family:var(--font-mono);}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;margin-top:22px;max-width:820px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-panel);
  box-shadow:var(--shadow-inset);overflow:hidden;transition:border-color var(--dur);
}
.faq-item:hover{border-color:var(--line-neon);}
.faq-item.is-open{border-color:var(--neon);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:17px;font-weight:600;color:#fff;
  transition:color var(--dur);
}
.faq-q:hover{color:var(--neon);}
.faq-ico{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform var(--dur);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--neon);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:12px;height:1.6px;}
.faq-ico::after{width:1.6px;height:12px;transition:opacity var(--dur);}
.faq-item.is-open .faq-ico{transform:rotate(180deg);}
.faq-item.is-open .faq-ico::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{
  padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--muted);margin:0;
  opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-a p{opacity:1;transition-delay:.08s;}
.faq-foot{margin-top:18px;font-size:14.5px;color:var(--muted);}
.faq-foot a{color:var(--neon);border-bottom:1px solid var(--line-neon);}
.faq-foot a:hover{color:var(--amber);border-bottom-color:var(--amber);}

/* ============ CTA 带 ============ */
.cta-band{
  margin-top:88px;border-top:1px solid var(--line-neon);border-bottom:1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(35,224,176,.07) 0 1px, transparent 1px 100%) 0 0/64px 100%,
    linear-gradient(0deg, rgba(35,224,176,.07) 0 1px, transparent 1px 100%) 0 0/100% 64px,
    var(--bg-panel);
  padding:52px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-copy h2{font-size:28px;line-height:1.35;}
.cta-copy p{margin-top:10px;font-size:15px;color:var(--muted);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{margin-top:0;border-top:1px solid var(--line-neon);background:var(--bg-base);}
.footer-top{padding:64px 0 40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-about{font-size:14px;line-height:1.8;color:var(--muted);max-width:300px;}
.social-row{display:flex;gap:10px;margin-top:20px;}
.social-row a{
  width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);
  border-radius:var(--radius-btn);color:var(--muted);
  transition:color var(--dur),border-color var(--dur),background var(--dur);
}
.social-row a:hover{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08);}
.footer-col h3{font-size:14px;font-weight:600;color:#E6EDF4;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--muted);transition:color var(--dur);}
.footer-col a:hover{color:var(--neon);}
.footer-col p{font-size:13.5px;line-height:1.8;color:var(--muted);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom small{font-size:13px;color:var(--muted);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .layout-index{grid-template-columns:230px minmax(0,1fr);gap:40px;}
  .page-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-thumb{order:-1;}
  .page-hero{padding:40px 0 36px;}
  .page-hero h1{font-size:34px;}
  .layout-index{grid-template-columns:1fr;gap:32px;padding-top:40px;}
  .anchor-nav{position:static;border-right:0;border-bottom:1px solid var(--line);padding:0 0 20px;}
  .anchor-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .anchor-list a{border-left:0;border:1px solid var(--line);border-radius:var(--radius-badge);padding:7px 12px;}
  .anchor-list a.is-current{border-color:var(--neon);}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .doc-section h2{font-size:26px;}
}
@media (max-width:900px){
  .nav{
    position:fixed;left:0;right:0;top:68px;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:8px;
    background:var(--bg-base);border-top:1px solid var(--line);
    padding:24px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--dur),transform var(--dur),visibility var(--dur);
  }
  .nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{opacity:0;transform:translateY(8px);}
  .nav.is-open .nav-list li{animation:drawerIn .34s forwards;}
  .nav.is-open .nav-list li:nth-child(1){animation-delay:.04s;}
  .nav.is-open .nav-list li:nth-child(2){animation-delay:.08s;}
  .nav.is-open .nav-list li:nth-child(3){animation-delay:.12s;}
  .nav.is-open .nav-list li:nth-child(4){animation-delay:.16s;}
  .nav.is-open .nav-list li:nth-child(5){animation-delay:.20s;}
  .nav.is-open .nav-list li:nth-child(6){animation-delay:.24s;}
  @keyframes drawerIn{to{opacity:1;transform:translateY(0);}}
  .nav-link{font-size:18px;padding:14px 0;border-bottom:1px solid var(--line);display:block;}
  .nav-link::after{display:none;}
  .nav>.btn{display:inline-flex;margin-top:22px;}
  .header-tools>.btn{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 16px;}
  .page-hero h1{font-size:31px;}
  .lede{font-size:15.5px;}
  .hero-stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .paper{padding:20px 18px;font-size:16px;}
  .doc-section h2{font-size:24px;}
  .doc-section h3{font-size:19px;}
  .section-gap{padding:56px 0 0;}
  .content-flow{gap:44px;}
  .cta-band{margin-top:64px;padding:40px 0;}
  .cta-copy h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-top{padding:48px 0 32px;}
  .cta-actions .btn,.hero-actions .btn{flex:1 1 100%;}
}
@media (max-width:420px){
  .page-hero h1{font-size:29px;}
  .anchor-list a{font-size:13.5px;}
  .btn{padding:11px 18px;font-size:14px;}
}

/* roulang page: article */
:root{
  --bg-base:#0A0D10;
  --bg-panel:#121820;
  --bg-elev:#18202A;
  --line:#232C36;
  --line-neon:rgba(35,224,176,.35);
  --neon:#23E0B0;
  --neon-dim:#14A98A;
  --amber:#FFA23A;
  --violet:#7B61FF;
  --paper:#F6F4EF;
  --ink:#1B1F23;
  --ink-2:#4A5259;
  --muted:#8A94A0;
  --text:#D7DEE6;
  --r-card:14px;
  --r-btn:10px;
  --r-media:12px;
  --r-badge:6px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-base);color:var(--text);
  font-family:var(--font-cn);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure{margin:0}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono{font-family:var(--font-mono)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--amber);color:#1A1004;box-shadow:inset 0 1px 0 rgba(255,255,255,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,162,58,.55)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-neon);color:var(--neon)}
.btn-ghost:hover{background:rgba(35,224,176,.10)}
.btn-sm{height:36px;padding:0 16px;font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--bg-base);
  border-bottom:1px solid var(--line);transition:border-color .2s ease;
}
.header-inner{display:flex;align-items:center;gap:26px;height:68px;transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:60px}
.site-header.is-scrolled{border-bottom-color:var(--line-neon)}
.logo{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;letter-spacing:.02em;white-space:nowrap}
.logo-mark{
  position:relative;flex:none;width:22px;height:22px;border-radius:6px;
  background:linear-gradient(135deg,var(--neon),var(--neon-dim));
  box-shadow:0 0 14px rgba(35,224,176,.45);
}
.logo-mark::after{content:"";position:absolute;inset:6px;border:1.5px solid #04120E;border-radius:2px}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-link{position:relative;display:inline-block;padding:8px 0;font-size:14px;font-weight:500;color:var(--muted);transition:color .18s ease}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--neon);
  box-shadow:0 0 12px rgba(35,224,176,.7);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover,.nav-link.is-active,.nav-link[aria-current="page"]{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav .btn-block{display:none}
.header-tools{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:38px;height:38px;border:1px solid var(--line);border-radius:9px;
  display:grid;place-items:center;color:var(--muted);transition:color .18s ease,border-color .18s ease;
}
.icon-btn:hover{color:var(--neon);border-color:var(--line-neon)}
.icon-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:9px}
.nav-toggle span{display:block;width:18px;height:2px;margin:4px auto;background:var(--text);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.search-panel{display:none;border-top:1px solid var(--line);background:var(--bg-panel)}
.search-panel.is-open{display:block}
.search-inner{display:flex;gap:12px;padding:14px 0}
.search-inner input{
  flex:1;height:44px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-elev);border:1px solid var(--line);color:var(--text);font-size:14px;font-family:inherit;
}
.search-inner input::placeholder{color:#5C6673}
.search-inner input:focus{outline:none;border-color:var(--line-neon);box-shadow:0 0 0 3px rgba(35,224,176,.12)}

/* ---------- 面包屑与文章头 ---------- */
.article-hero{position:relative;overflow:hidden;padding:20px 0 38px;border-bottom:1px solid var(--line);background:var(--bg-base)}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(35,224,176,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(35,224,176,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.article-hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-neon),transparent);transform:rotate(-24deg);pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{padding-bottom:20px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb a{border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.breadcrumb a:hover{color:var(--neon);border-bottom-color:var(--line-neon)}
.breadcrumb .sep{color:#4A5460}
.breadcrumb .current{color:var(--text);max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:900px}
.article-head .tag{margin-bottom:16px}
.article-head h1{
  font-size:clamp(30px,4vw,46px);line-height:1.24;font-weight:900;color:#fff;letter-spacing:-.5px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;color:var(--muted)}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-row .meta-item.hl{color:var(--neon)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#39434F}
.meta-row .mono{font-size:12.5px;letter-spacing:.02em}

/* ---------- 标签与徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 11px;font-size:12px;
  border:1px solid var(--line);border-radius:var(--r-badge);color:var(--muted);background:var(--bg-panel);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.tag:hover{color:var(--neon);border-color:var(--line-neon)}
.tag-cat{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08)}
.badge-violet{border-color:rgba(123,97,255,.5);color:#A99AFF}
.badge-amber{border-color:rgba(255,162,58,.5);color:var(--amber)}

/* ---------- 文章主体布局 ---------- */
.article-wrap{padding:52px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start}
.article-main{min-width:0;max-width:780px}
.paper{
  background:var(--paper);color:var(--ink);border-radius:var(--r-card);
  padding:42px 46px;font-size:17px;line-height:1.85;
  box-shadow:0 1px 2px rgba(10,15,20,.06),0 22px 48px -24px rgba(10,15,20,.6);
}
.paper > p:first-of-type{font-size:17.5px}
.paper p{margin:0 0 1.15em;color:#252B31}
.paper h2{
  font-size:31px;line-height:1.3;font-weight:700;color:var(--ink);
  margin:48px 0 16px;letter-spacing:-.2px;scroll-margin-top:96px;
}
.paper h3{font-size:21px;line-height:1.45;font-weight:600;color:var(--ink);margin:34px 0 12px;scroll-margin-top:96px}
.paper h2 + h3{margin-top:14px}
.paper ul,.paper ol{margin:0 0 1.3em;padding-left:1.35em}
.paper ul{list-style:disc}
.paper ol{list-style:decimal}
.paper li{margin-bottom:8px;line-height:1.8;color:#252B31}
.paper li::marker{color:var(--neon-dim)}
.paper a{color:#0F8E74;border-bottom:1px solid rgba(20,169,138,.35);transition:color .18s ease,border-color .18s ease}
.paper a:hover{color:#0A6D59;border-bottom-color:#0A6D59}
.paper strong{font-weight:700;color:#141A1F}
.paper blockquote{
  margin:26px 0;padding:14px 20px;background:#EDEAE1;
  border-left:3px solid var(--neon);border-radius:0 8px 8px 0;color:var(--ink-2);
}
.paper blockquote p:last-child{margin-bottom:0}
.paper img{border-radius:var(--r-media);margin:22px auto;border:1px solid #DED9CD}
.paper figure{margin:26px 0}
.paper figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px}
.paper hr{border:0;border-top:1px solid #DCD7CB;margin:34px 0}
.paper code{font-family:var(--font-mono);font-size:14px;background:#E8E4DA;padding:2px 6px;border-radius:4px}
.paper table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;background:#FBF9F5;border:1px solid #D9D4C8}
.paper th{background:#E7E2D7;text-align:left;padding:14px 16px;font-weight:600;color:#141A1F;border-bottom:1px solid #D9D4C8}
.paper td{padding:13px 16px;border-top:1px solid #E4DFD4;color:#252B31}
.paper tbody tr:nth-child(even){background:rgba(20,26,31,.025)}

/* 空态 */
.paper .empty-state{
  border:1px dashed #C7C2B5;background:#EFECE3;border-radius:12px;
  padding:46px 24px;text-align:center;color:var(--ink-2);
}
.empty-state .empty-mark{
  width:46px;height:46px;margin:0 auto 16px;border-radius:12px;display:grid;place-items:center;
  border:1px solid #C7C2B5;color:var(--neon-dim);
}
.empty-state .empty-mark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.empty-state strong{display:block;font-size:17px;color:var(--ink);margin-bottom:8px}
.empty-state p{font-size:14px;margin:0}
.empty-state .empty-actions{margin-top:20px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.empty-state .btn-primary{color:#1A1004}

/* 文末标签与相关推荐 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-head h2{font-size:24px;font-weight:700;color:#fff;letter-spacing:-.2px}
.section-head .more{font-size:13px;color:var(--neon);border-bottom:1px solid var(--line-neon);padding-bottom:2px;transition:color .18s ease,border-color .18s ease}
.section-head .more:hover{color:var(--amber);border-bottom-color:rgba(255,162,58,.6)}
.related{margin-top:56px;padding-top:34px;border-top:1px solid var(--line)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,border-color .2s ease;
}
.rel-card::after{
  content:"";position:absolute;top:0;right:0;width:0;height:2px;background:var(--neon);
  box-shadow:0 0 10px rgba(35,224,176,.8);transition:width .22s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--line-neon)}
.rel-card:hover::after{width:28px}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,rgba(35,224,176,.28),rgba(10,13,16,.9))}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:16px 18px 20px}
.rel-body .rel-cat{font-size:12px;color:var(--neon);letter-spacing:.02em}
.rel-body h3{font-size:16.5px;font-weight:600;color:#fff;line-height:1.5;margin-top:8px}
.rel-body p{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--muted)}

.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;min-width:0}
.side-card{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);padding:20px}
.side-card h3{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(35,224,176,.7)}
.toc-list li a{
  display:block;padding:8px 0 8px 12px;font-size:13.5px;line-height:1.6;color:var(--muted);
  border-left:1px solid var(--line);transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.toc-list li a:hover{color:var(--neon);border-left-color:var(--neon);background:rgba(35,224,176,.05)}
.toc-list li.lvl-3 a{padding-left:24px;font-size:13px}
.toc-list li.is-current a{color:var(--neon);border-left-color:var(--neon);background:rgba(35,224,176,.06)}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.7}
.member-card{background:linear-gradient(180deg,rgba(35,224,176,.09),rgba(24,32,42,0) 62%),var(--bg-elev);border-color:var(--line-neon)}
.member-card .member-tier{font-size:12px;color:var(--violet);border:1px solid rgba(123,97,255,.45);border-radius:var(--r-badge);display:inline-flex;padding:2px 8px;margin-bottom:12px}
.member-card .member-line{font-size:13.5px;color:var(--muted);line-height:1.75;margin-bottom:16px}
.member-card ul.member-list{margin-bottom:18px}
.member-card ul.member-list li{position:relative;font-size:13px;color:var(--text);padding-left:18px;margin-bottom:8px;line-height:1.65}
.member-card ul.member-list li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;border:1px solid var(--neon);background:rgba(35,224,176,.14)}
.member-card .btn{width:100%}
.member-note{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-top:88px;
  border-top:1px solid var(--line-neon);border-bottom:1px solid var(--line);
  background:var(--bg-panel);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.9;
  background-image:linear-gradient(rgba(35,224,176,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(35,224,176,.07) 1px,transparent 1px);
  background-size:40px 40px;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:46px 0}
.cta-inner h2{font-size:26px;font-weight:700;color:#fff;line-height:1.35;letter-spacing:-.2px}
.cta-inner p{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:560px;line-height:1.75}
.cta-actions{display:flex;gap:14px;flex:none;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;border-top:1px solid var(--line-neon);background:var(--bg-base);padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-about{font-size:14px;color:var(--muted);line-height:1.8;max-width:320px}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--muted);transition:color .18s ease}
.footer-col ul a:hover{color:var(--neon)}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:12px}
.social-row{display:flex;gap:12px;margin-top:18px}
.social-row a{
  width:34px;height:34px;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;
  color:var(--muted);transition:color .18s ease,border-color .18s ease;
}
.social-row a:hover{color:var(--neon);border-color:var(--line-neon)}
.social-row svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding:20px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.footer-bottom .mono{font-size:12px;letter-spacing:.06em;color:#5C6673}

/* 骨架 */
.skeleton{position:relative;overflow:hidden;background:var(--bg-elev);border-radius:8px}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.055),transparent);animation:shimmer 1.4s infinite}
@keyframes shimmer{100%{transform:translateX(100%)}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .rel-grid{grid-template-columns:repeat(3,1fr)}
  .article-layout{grid-template-columns:minmax(0,1fr) 270px;gap:34px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .header-tools .btn-sm{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:30px}
  .article-main{max-width:100%}
  .article-side{position:static;top:auto}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .paper{padding:34px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:900px){
  .header-tools .icon-btn{display:none}
  .nav-toggle{display:block}
  .nav{
    position:fixed;left:0;right:0;top:68px;bottom:0;z-index:55;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:22px 20px 32px;margin-left:0;background:var(--bg-base);
    border-top:1px solid var(--line);overflow-y:auto;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .28s ease,opacity .28s ease,visibility .28s ease;
  }
  .nav.is-open{transform:translateX(0);opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{opacity:0;transform:translateY(8px)}
  .nav.is-open .nav-list li{animation:navIn .34s ease forwards}
  .nav.is-open .nav-list li:nth-child(1){animation-delay:.04s}
  .nav.is-open .nav-list li:nth-child(2){animation-delay:.08s}
  .nav.is-open .nav-list li:nth-child(3){animation-delay:.12s}
  .nav.is-open .nav-list li:nth-child(4){animation-delay:.16s}
  .nav.is-open .nav-list li:nth-child(5){animation-delay:.2s}
  .nav.is-open .nav-list li:nth-child(6){animation-delay:.24s}
  .nav-link{font-size:18px;padding:15px 0;border-bottom:1px solid var(--line);display:block}
  .nav-link::after{display:none}
  .nav .btn-block{display:inline-flex;margin-top:26px;height:48px;font-size:15px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:38px 0}
  .cta-actions{width:100%}
}
@keyframes navIn{to{opacity:1;transform:translateY(0)}}
@media (max-width:767px){
  body{font-size:16px}
  .article-hero{padding:14px 0 28px}
  .breadcrumb .current{max-width:190px}
  .article-head h1{font-size:30px;line-height:1.28}
  .article-wrap{padding:36px 0 0}
  .paper{padding:26px 20px;font-size:16px;line-height:1.8;border-radius:12px}
  .paper h2{font-size:24px;margin-top:36px;scroll-margin-top:84px}
  .paper h3{font-size:19px}
  .paper table{display:block;overflow-x:auto;white-space:nowrap}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{margin-top:60px}
  .cta-inner h2{font-size:22px}
  .back-row .btn{width:100%}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .article-head h1{font-size:27px}
  .paper{padding:22px 16px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg-base:#0A0D10;
  --bg-panel:#121820;
  --bg-elev:#18202A;
  --line:#232C36;
  --line-neon:rgba(35,224,176,.35);
  --neon:#23E0B0;
  --neon-dim:#14A98A;
  --amber:#FFA23A;
  --violet:#7B61FF;
  --paper:#F6F4EF;
  --ink:#1B1F23;
  --ink-2:#4A5259;
  --muted:#8A94A0;
  --text:#D7DEE6;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-card:14px;
  --r-btn:10px;
  --r-media:12px;
  --r-badge:6px;
  --shadow-paper:0 1px 2px rgba(10,15,20,.06),0 10px 28px -14px rgba(10,15,20,.22);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto}

a{color:inherit;text-decoration:none}

a:hover{color:var(--neon)}

button{font-family:inherit;cursor:pointer}

input,textarea,select{font-family:inherit;font-size:15px}

h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:#fff}

p{margin:0 0 1.15em}

ul,ol{margin:0;padding:0;list-style:none}

table{border-collapse:collapse;width:100%}

:focus-visible{outline:2px solid var(--neon);outline-offset:2px}

.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.mono{font-family:var(--mono);font-size:13px;letter-spacing:.04em}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--bg-base);
  border-bottom:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}

.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(35,224,176,.55),transparent);
  opacity:0;
  transition:opacity .25s ease;
}

.site-header.is-scrolled::after{opacity:1}

.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:68px;
  transition:height .2s ease;
}

.site-header.is-scrolled .header-inner{height:60px}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  letter-spacing:.02em;
  flex:0 0 auto;
}

.logo-mark{
  width:20px;height:20px;
  border-radius:5px;
  border:1px solid var(--line-neon);
  background:linear-gradient(140deg,rgba(35,224,176,.35),rgba(123,97,255,.25));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  position:relative;
  flex:0 0 auto;
}

.logo-mark::after{
  content:"";
  position:absolute;inset:5px;
  border-radius:2px;
  background:var(--neon);
  opacity:.85;
}

.nav{
  display:flex;
  align-items:center;
  gap:26px;
  flex:1 1 auto;
  justify-content:flex-end;
}

.nav-list{
  display:flex;
  align-items:center;
  gap:26px;
}

.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  transition:color .18s ease,text-shadow .18s ease;
}

.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(35,224,176,.7);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}

.nav-link:hover,
.nav-link.is-active{
  color:var(--neon);
  text-shadow:0 0 12px rgba(35,224,176,.55);
}

.nav-link:hover::after,
.nav-link.is-active::after{transform:scaleX(1)}

.nav .btn-block{display:none}

.header-tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}

.icon-btn{
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--muted);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}

.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}

.icon-btn:hover{border-color:var(--line-neon);color:var(--neon);background:rgba(35,224,176,.08)}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:9px 9px;
  flex-direction:column;
  justify-content:space-between;
}

.nav-toggle span{
  display:block;
  height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease,background .22s ease;
}

.nav-toggle.is-open span:nth-child(1){transform:translateY(9px) rotate(45deg);background:var(--neon)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-9px) rotate(-45deg);background:var(--neon)}

.search-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-elev);
}

.search-panel.is-open{display:block}

.search-inner{
  display:flex;
  gap:12px;
  align-items:center;
  padding:16px 0;
}

.search-inner input{
  flex:1 1 auto;
  height:46px;
  padding:0 16px;
  background:var(--bg-base);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
}

.search-inner input::placeholder{color:#68717c}

.search-inner input:focus{
  outline:none;
  border-color:var(--neon);
  box-shadow:0 0 0 3px rgba(35,224,176,.14);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  padding:11px 20px;
  border:1px solid transparent;
  transition:transform .16s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}

.btn-primary{
  background:var(--amber);
  color:#1B1206;
  box-shadow:0 6px 18px -12px rgba(255,162,58,.7);
}

.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 26px -10px rgba(255,162,58,.55);
  color:#1B1206;
}

.btn-ghost{
  background:transparent;
  border-color:var(--line-neon);
  color:var(--neon);
}

.btn-ghost:hover{background:rgba(35,224,176,.1);color:var(--neon)}

.btn-text{
  padding:4px 0;
  border:0;
  border-bottom:1px solid var(--line-neon);
  border-radius:0;
  color:var(--neon);
  background:transparent;
  font-size:14px;
}

.btn-text:hover{color:var(--amber);border-color:var(--amber)}

.btn-sm{padding:8px 15px;font-size:13.5px}

.btn-lg{padding:14px 26px;font-size:15.5px}

.btn-block{width:100%}

.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  font-family:var(--mono);
  letter-spacing:.04em;
  padding:22px 0 0;
}

.crumb a:hover{color:var(--neon)}

.crumb span.sep{color:#3a444f}

/* ---------- 小号 Hero ---------- */
.hero-mini{
  position:relative;
  padding:26px 0 64px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
  background:
    linear-gradient(180deg,rgba(35,224,176,.05),transparent 62%),
    var(--bg-base);
}

.hero-mini::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.9;
  pointer-events:none;
}

.hero-mini::after{
  content:"";
  position:absolute;
  top:-120px;right:-60px;
  width:520px;height:2px;
  background:linear-gradient(90deg,transparent,rgba(35,224,176,.55));
  transform:rotate(-14deg);
  pointer-events:none;
}

.hero-mini-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);
  gap:44px;
  align-items:center;
}

.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--neon);
  border:1px solid var(--line-neon);
  border-radius:var(--r-badge);
  padding:5px 10px;
  margin-bottom:20px;
  background:rgba(35,224,176,.06);
}

.hero-mini h1{
  font-size:46px;
  font-weight:900;
  line-height:1.22;
  letter-spacing:-.5px;
  margin-bottom:16px;
}

.hero-mini h1 em{
  font-style:normal;
  color:var(--neon);
  text-shadow:0 0 22px rgba(35,224,176,.35);
}

.hero-lead{
  font-size:16.5px;
  color:#B7C1CC;
  max-width:560px;
  margin-bottom:26px;
}

.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

.hero-figure{
  border:1px solid var(--line-neon);
  border-radius:var(--r-media);
  overflow:hidden;
  position:relative;
  background:linear-gradient(140deg,rgba(35,224,176,.22),rgba(10,13,16,0) 70%),var(--bg-elev);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}

.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  opacity:.9;
}

.hero-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:12px 14px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text);
  background:linear-gradient(180deg,transparent,rgba(10,13,16,.92));
}

.hero-metrics{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:48px;
  border-top:1px solid var(--line);
  padding-top:22px;
}

.metric{
  padding:0 20px;
  border-left:1px solid var(--line);
}

.metric:first-child{border-left:0;padding-left:0}

.metric b{
  display:block;
  font-family:var(--mono);
  font-size:24px;
  font-weight:600;
  color:#fff;
  letter-spacing:-.02em;
}

.metric span{
  font-size:13px;
  color:var(--muted);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line)}

.section:last-of-type{border-bottom:0}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:38px;
}

.section-head h2{
  font-size:32px;
  font-weight:700;
  line-height:1.3;
}

.section-head p{
  margin:10px 0 0;
  font-size:15px;
  color:var(--muted);
  max-width:620px;
}

.sec-index{
  writing-mode:vertical-rl;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.18em;
  color:#5c6craft;
  color:#5C6773;
  margin-right:14px;
}

.head-line{display:flex;align-items:flex-start}

/* ---------- 纸面面板 ---------- */
.paper{
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--r-card);
  padding:26px 28px;
  box-shadow:var(--shadow-paper);
  max-width:760px;
}

.paper h3{color:var(--ink);font-size:21px;font-weight:600;margin-bottom:10px}

.paper p{color:var(--ink-2);font-size:16.5px;line-height:1.85;margin:0 0 .9em}

.paper p:last-child{margin-bottom:0}

.paper ul{margin:6px 0 0}

.paper li{
  position:relative;
  padding-left:16px;
  color:var(--ink-2);
  font-size:16px;
  line-height:1.8;
  margin-bottom:8px;
}

.paper li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--neon-dim);
}

/* ---------- 非对称分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.4fr);
  gap:52px;
  align-items:start;
}

.split h2{font-size:30px;margin-bottom:14px}

.split .split-lead{font-size:15.5px;color:var(--muted);margin:0}

.point-list{display:grid;gap:22px}

.point{
  padding-left:20px;
  border-left:1px solid var(--line-neon);
}

.point h3{font-size:18px;font-weight:600;margin-bottom:6px;color:#fff}

.point p{margin:0;font-size:15px;color:var(--muted);line-height:1.75}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  padding:6px 0 0;
}

.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;bottom:0;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--line-neon) 6%,var(--line-neon) 94%,transparent);
  transform:translateX(-.5px);
}

.tl-item{
  position:relative;
  width:50%;
  padding:0 44px 40px 0;
}

.tl-item:nth-child(even){
  margin-left:50%;
  padding:0 0 40px 44px;
}

.tl-item:last-child{padding-bottom:0}

.tl-dot{
  position:absolute;
  top:30px;
  right:-5px;
  width:11px;height:11px;
  border-radius:50%;
  background:var(--bg-base);
  border:1px solid var(--neon);
  box-shadow:0 0 12px rgba(35,224,176,.65);
}

.tl-item:nth-child(even) .tl-dot{right:auto;left:-6px}

.tl-card{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 22px;
  position:relative;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}

.tl-card::after{
  content:"";
  position:absolute;
  top:0;right:0;
  width:16px;height:2px;
  background:var(--neon);
  opacity:0;
  transition:opacity .2s ease;
  border-radius:0 0 0 2px;
}

.tl-card:hover{transform:translateY(-2px);border-color:var(--line-neon);box-shadow:0 14px 30px -22px rgba(35,224,176,.6)}

.tl-card:hover::after{opacity:1}

.tl-time{
  display:inline-block;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--neon);
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  padding:3px 9px;
  margin-bottom:12px;
}

.tl-card h3{font-size:18px;font-weight:600;margin-bottom:8px;color:#fff}

.tl-card p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.75}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow-x:auto;
  background:var(--bg-panel);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}

table.data{min-width:760px;font-size:15px}

table.data thead th{
  background:var(--bg-elev);
  color:#fff;
  font-weight:600;
  font-size:14px;
  text-align:left;
  padding:0 18px;
  height:52px;
  white-space:nowrap;
  border-bottom:1px solid var(--line);
}

table.data tbody td{
  padding:0 18px;
  height:52px;
  color:var(--text);
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}

table.data tbody tr:nth-child(even){background:rgba(255,255,255,.02)}

table.data tbody tr:last-child td{border-bottom:0}

table.data tbody td:first-child{font-weight:600;color:#fff}

table.data tbody tr:hover{background:rgba(35,224,176,.05)}

.tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.02em;
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  padding:2px 9px;
  color:var(--muted);
}

.tag-neon{border-color:var(--line-neon);color:var(--neon)}

.tag-violet{border-color:rgba(123,97,255,.5);color:#A99BFF}

.tag-amber{border-color:rgba(255,162,58,.5);color:var(--amber)}

/* ---------- 标签云 + 列表行 ---------- */
.retrieve{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:44px;
  align-items:start;
}

.tagcloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

.row-list{border-top:1px solid var(--line)}

.row-item{
  display:grid;
  grid-template-columns:130px minmax(0,1fr) auto;
  gap:20px;
  align-items:center;
  padding:20px 0;
  border-bottom:1px solid var(--line);
  transition:background .18s ease,padding .18s ease;
  border-radius:4px;
}

.row-item:hover{background:rgba(35,224,176,.045)}

.row-item .row-meta{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
  display:flex;
  flex-direction:column;
  gap:6px;
}

.row-item h3{font-size:16.5px;font-weight:600;margin-bottom:6px;color:#fff}

.row-item p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}

.row-arrow{
  font-family:var(--mono);
  font-size:16px;
  color:var(--muted);
  transition:color .18s ease,transform .18s ease;
}

.row-item:hover .row-arrow{color:var(--neon);transform:translateX(3px)}

/* ---------- 图文块 ---------- */
.figure-band{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-panel);
}

.figure-band img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;opacity:.88}

.figure-band-body{padding:30px 32px}

.figure-band-body h3{font-size:20px;font-weight:600;margin-bottom:10px}

.figure-band-body p{font-size:15px;color:var(--muted);margin-bottom:16px}

.figure-band-body ul li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--text);
  line-height:1.8;
  margin-bottom:6px;
}

.figure-band-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:1px;
  background:var(--neon);
}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px}

.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-panel);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}

.faq-item.is-open{border-color:var(--line-neon);box-shadow:0 0 0 1px rgba(35,224,176,.12)}

.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  background:transparent;
  border:0;
  color:#fff;
  font-size:17px;
  font-weight:600;
  padding:18px 22px;
}

.faq-q .chev{
  flex:0 0 auto;
  width:18px;height:18px;
  position:relative;
  transition:transform .22s ease;
}

.faq-q .chev::before,
.faq-q .chev::after{
  content:"";
  position:absolute;
  background:var(--neon);
  border-radius:2px;
}

.faq-q .chev::before{left:0;right:0;top:8px;height:2px}
.faq-q .chev::after{top:0;bottom:0;left:8px;width:2px}

.faq-item.is-open .chev{transform:rotate(135deg)}

.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease,opacity .2s ease;
  opacity:0;
}

.faq-item.is-open .faq-a{opacity:1}

.faq-a-inner{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}

.faq-foot{
  margin-top:22px;
  font-size:14.5px;
  color:var(--muted);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  border:1px solid var(--line-neon);
  border-radius:var(--r-card);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  background:var(--bg-panel);
  overflow:hidden;
}

.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(35,224,176,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,224,176,.08) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 18% 50%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 18% 50%,#000,transparent 72%);
  pointer-events:none;
}

.cta-band h2{position:relative;font-size:26px;font-weight:700}

.cta-band p{position:relative;margin:8px 0 0;font-size:15px;color:var(--muted)}

.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  position:relative;
  background:var(--bg-base);
  padding:64px 0 26px;
}

.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(35,224,176,.5),transparent);
}

.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
}

.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}

.footer-about{font-size:14px;color:var(--muted);max-width:280px;margin-bottom:18px}

.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.02em;
}

.footer-col ul li{margin-bottom:10px}

.footer-col ul a{font-size:14px;color:var(--muted);transition:color .18s ease}

.footer-col ul a:hover{color:var(--neon)}

.footer-col p{font-size:14px;color:var(--muted);line-height:1.8}

.social-row{display:flex;gap:12px}

.social-row a{
  width:36px;height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--muted);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}

.social-row svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

.social-row a:hover{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08)}

.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}

.footer-bottom small{font-size:13px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-mini h1{font-size:42px}
  .split{gap:40px}
}

@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero-mini-inner{grid-template-columns:1fr;gap:32px}
  .hero-mini h1{font-size:36px}
  .hero-mini{padding-bottom:52px}
  .hero-figure{max-width:520px}
  .split{grid-template-columns:1fr;gap:28px}
  .retrieve{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .figure-band{grid-template-columns:1fr}
  .figure-band img{aspect-ratio:16/9}
  .nav-link{font-size:13.5px}
  .nav-list{gap:18px}
  .nav{gap:18px}
}

@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav{
    position:fixed;
    inset:0;
    z-index:90;
    background:var(--bg-base);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    padding:96px 24px 32px;
    gap:0;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    overflow-y:auto;
  }
  .nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--line)}
  .nav-link{
    display:block;
    font-size:18px;
    padding:18px 0;
    opacity:0;
  }
  .nav.is-open .nav-list li{animation:fadeUp .32s ease forwards}
  .nav.is-open .nav-list li:nth-child(1){animation-delay:.04s}
  .nav.is-open .nav-list li:nth-child(2){animation-delay:.08s}
  .nav.is-open .nav-list li:nth-child(3){animation-delay:.12s}
  .nav.is-open .nav-list li:nth-child(4){animation-delay:.16s}
  .nav.is-open .nav-list li:nth-child(5){animation-delay:.2s}
  .nav.is-open .nav-list li:nth-child(6){animation-delay:.24s}
  .nav-link::after{display:none}
  .nav .btn-block{display:inline-flex;margin-top:28px}
  .header-tools .btn-sm{display:none}
  .timeline::before{left:8px}
  .tl-item,
  .tl-item:nth-child(even){
    width:100%;
    margin-left:0;
    padding:0 0 28px 34px;
  }
  .tl-dot,
  .tl-item:nth-child(even) .tl-dot{left:3px;right:auto;top:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px}
}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}

@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .section{padding:56px 0}
  .container{padding:0 16px}
  .hero-mini h1{font-size:31px}
  .hero-mini h1 em{display:inline}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:16px 0;margin-top:34px}
  .metric{padding:0 16px}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .metric b{font-size:20px}
  .paper{padding:20px 18px}
  .row-item{grid-template-columns:1fr;gap:8px;padding:18px 0}
  .row-item .row-meta{flex-direction:row;gap:12px}
  .row-arrow{display:none}
  .figure-band-body{padding:24px 20px}
  .cta-band h2{font-size:21px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a-inner{padding:0 18px 18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}

@media (max-width:420px){
  body{font-size:15.5px}
  .hero-mini h1{font-size:28px}
  .btn{padding:11px 16px;font-size:13.5px}
  .hero-actions .btn{width:100%}
  .hero-actions{width:100%}
  .metric b{font-size:18px}
  .sec-index{display:none}
}

/* roulang page: category3 */
:root{
  --bg-base:#0A0D10;
  --bg-panel:#121820;
  --bg-elev:#18202A;
  --line:#232C36;
  --line-neon:rgba(35,224,176,.35);
  --neon:#23E0B0;
  --neon-dim:#14A98A;
  --amber:#FFA23A;
  --violet:#7B61FF;
  --paper:#F6F4EF;
  --ink:#1B1F23;
  --ink-2:#4A5259;
  --muted:#8A94A0;
  --text:#D7DEE6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-media:12px;
  --radius-badge:6px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --container:1200px;
  --section-gap:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  padding:12px 22px;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--amber);color:#14100A;border-color:var(--amber)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,162,58,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--neon);border-color:var(--line-neon)}
.btn-ghost:hover{background:rgba(35,224,176,.10);transform:translateY(-1px)}
.btn-text{
  background:none;border:none;padding:4px 0;color:var(--text);
  border-bottom:1px solid var(--line-neon);border-radius:0;font-weight:600;
}
.btn-text:hover{color:var(--amber);border-bottom-color:var(--amber)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%;display:none}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg-base);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(35,224,176,.65),transparent);
  opacity:0;transition:opacity .28s ease;
}
.site-header.is-scrolled::after{opacity:1}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;letter-spacing:.02em;color:#fff}
.logo-mark{
  width:22px;height:22px;border-radius:6px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--neon),var(--neon-dim) 55%,rgba(123,97,255,.85));
  box-shadow:0 0 0 1px rgba(35,224,176,.35),0 0 16px -4px rgba(35,224,176,.7);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:6px;border-radius:2px;background:var(--bg-base);
}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;display:inline-block;padding:22px 0;
  font-size:14px;font-weight:500;color:var(--text);transition:color .2s ease,text-shadow .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;box-shadow:0 0 12px rgba(35,224,176,.55);
}
.nav-link:hover,.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:8px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);
  cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:var(--text);stroke-width:1.6;stroke-linecap:round}
.icon-btn:hover{border-color:var(--line-neon);background:rgba(35,224,176,.08)}
.icon-btn:hover svg{stroke:var(--neon)}
.nav-toggle{
  display:none;width:40px;height:40px;background:transparent;border:1px solid var(--line);
  border-radius:var(--radius-btn);cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:1.6px;background:var(--text);border-radius:2px;
  transition:transform .25s ease,opacity .2s ease,top .25s ease;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:19px}
.nav-toggle span:nth-child(3){top:24px}
.nav-toggle.is-open span:nth-child(1){top:19px;transform:rotate(45deg);background:var(--neon)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:19px;transform:rotate(-45deg);background:var(--neon)}
.search-panel{display:none;border-top:1px solid var(--line);background:var(--bg-panel)}
.search-panel.is-open{display:block}
.search-inner{display:flex;gap:12px;padding:14px 0}
.search-inner input{
  flex:1;min-width:0;background:var(--bg-elev);border:1px solid var(--line);
  border-radius:var(--radius-btn);padding:11px 16px;font-size:15px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-inner input::placeholder{color:var(--muted)}
.search-inner input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(35,224,176,.15)}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(rgba(35,224,176,.055) 1px,transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg,rgba(35,224,176,.055) 1px,transparent 1px) 0 0/64px 64px,
    var(--bg-base);
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
}
.page-hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:640px;height:2px;
  background:linear-gradient(90deg,transparent,rgba(35,224,176,.75),transparent);
  transform:rotate(-16deg);transform-origin:left center;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-neon),transparent);
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb span.sep{opacity:.55}
.page-hero h1{
  font-size:44px;font-weight:900;line-height:1.22;letter-spacing:-.5px;color:#fff;
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--neon);text-shadow:0 0 22px rgba(35,224,176,.35)}
.hero-lead{max-width:640px;font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{
  position:relative;border-radius:var(--radius-media);overflow:hidden;
  border:1px solid var(--line-neon);box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
  aspect-ratio:16/11;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,13,16,.05),rgba(10,13,16,.55));
}
.hero-media figcaption{
  position:absolute;left:14px;bottom:12px;right:14px;z-index:1;
  font-size:12px;color:#CFE7DE;letter-spacing:.02em;
}
.stat-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
}
.stat-row li{padding:0 24px;border-left:1px solid var(--line)}
.stat-row li:first-child{border-left:none;padding-left:0}
.stat-num{display:block;font-size:26px;font-weight:700;color:var(--neon);line-height:1.3}
.stat-label{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* ---------- 板块基础 ---------- */
.section{padding:var(--section-gap) 0}
.section + .section{padding-top:0}
.section-rule{border-top:1px solid var(--line);margin-top:24px}
.section-head{max-width:760px;margin-bottom:44px;position:relative}
.section-index{
  display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--neon);border:1px solid var(--line-neon);border-radius:var(--radius-badge);
  padding:3px 9px;margin-bottom:16px;
}
.section-head h2{font-size:32px;font-weight:700;line-height:1.3;color:#fff;letter-spacing:-.2px}
.section-sub{margin-top:14px;font-size:16px;color:var(--muted);max-width:700px}

/* ---------- 纸面正文 ---------- */
.paper{
  background:var(--paper);color:var(--ink);border-radius:var(--radius-card);
  padding:28px 30px;
  box-shadow:0 1px 2px rgba(10,15,20,.06),0 10px 28px -14px rgba(10,15,20,.22);
}
.paper p{color:var(--ink-2);font-size:16.5px;line-height:1.85}
.paper p + p{margin-top:1.15em}
.paper h3{color:var(--ink)}

/* ---------- 图文矩阵 ---------- */
.zigzag{
  display:grid;grid-template-columns:440px 1fr;gap:44px;align-items:center;
  padding:40px 0;border-top:1px solid var(--line);
}
.zigzag:first-of-type{border-top:none;padding-top:0}
.zigzag--reverse{grid-template-columns:1fr 440px}
.zigzag--reverse .zigzag-media{order:2}
.zigzag--reverse .zigzag-body{order:1}
.zigzag-media{
  position:relative;border-radius:var(--radius-media);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:4/3;
  background:linear-gradient(135deg,rgba(35,224,176,.35),transparent 70%);
}
.zigzag-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.zigzag:hover .zigzag-media{border-color:var(--line-neon)}
.zigzag:hover .zigzag-media img{transform:scale(1.03)}
.zigzag-tag{
  position:absolute;left:0;top:0;z-index:1;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  background:rgba(10,13,16,.78);color:var(--neon);
  border-right:1px solid var(--line-neon);border-bottom:1px solid var(--line-neon);
  border-radius:0 0 8px 0;padding:6px 12px;
}
.zigzag-body h3{font-size:22px;font-weight:600;line-height:1.45;margin-bottom:14px;color:var(--ink)}
.zigzag-body .paper-lead{margin-bottom:18px}
.point-list{display:grid;gap:12px;margin-top:18px;padding-top:18px;border-top:1px solid rgba(27,31,35,.12)}
.point-list li{position:relative;padding-left:22px;font-size:15.5px;color:var(--ink-2);line-height:1.75}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  border:1px solid var(--neon-dim);background:rgba(20,169,138,.16);
}

/* ---------- 分栏 + 标签云 ---------- */
.split{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start}
.split-head h2{font-size:32px;font-weight:700;line-height:1.3;color:#fff}
.split-head p{margin-top:16px;font-size:16px;color:var(--muted)}
.split-head .section-index{margin-bottom:16px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-block;font-size:12px;letter-spacing:.02em;color:var(--text);
  border:1px solid var(--line);border-radius:var(--radius-badge);
  padding:6px 12px;background:var(--bg-panel);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{border-color:var(--line-neon);color:var(--neon);transform:translateY(-2px)}
.tag-neon{color:var(--neon);border-color:var(--line-neon)}
.access-list{margin-top:28px;border-top:1px solid var(--line)}
.access-list li{
  display:grid;grid-template-columns:120px 1fr;gap:20px;align-items:baseline;
  padding:18px 0;border-bottom:1px solid var(--line);
}
.access-list .k{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--neon)}
.access-list .v{font-size:15.5px;color:var(--text);line-height:1.75}
.note-line{margin-top:20px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:none;text-align:left;cursor:pointer;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--neon)}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--neon);border-radius:2px;
}
.faq-icon::before{left:4px;right:4px;top:10px;height:1.6px}
.faq-icon::after{top:4px;bottom:4px;left:10px;width:1.6px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .3s ease,opacity .2s ease;
}
.faq-item.is-open .faq-a{max-height:420px;opacity:1}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.9;color:var(--muted);max-width:720px}
.faq-foot{margin-top:26px;font-size:14px;color:var(--muted)}
.faq-foot a{color:var(--neon);border-bottom:1px solid var(--line-neon)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:
    linear-gradient(90deg,rgba(35,224,176,.07) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(rgba(35,224,176,.07) 1px,transparent 1px) 0 0/48px 48px,
    var(--bg-panel);
  padding:56px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-copy h2{font-size:26px;font-weight:700;color:#fff;line-height:1.35}
.cta-copy p{margin-top:10px;font-size:15px;color:var(--muted);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line-neon);background:var(--bg-base);margin-top:0}
.footer-top{padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:12px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-about{max-width:300px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-col ul a:hover{color:var(--neon)}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .2s ease,background .2s ease;
}
.social-row svg{width:17px;height:17px;fill:none;stroke:var(--muted);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:stroke .2s ease}
.social-row a:hover{border-color:var(--line-neon);background:rgba(35,224,176,.08)}
.social-row a:hover svg{stroke:var(--neon)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);
}
.footer-bottom small{font-size:13px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .zigzag{grid-template-columns:360px 1fr;gap:36px}
  .zigzag--reverse{grid-template-columns:1fr 360px}
}
@media (max-width:1023px){
  :root{--section-gap:72px}
  .container{padding:0 24px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .page-hero h1{font-size:38px}
  .split{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-toggle{display:block}
  .nav{
    position:fixed;top:68px;left:0;right:0;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-base);padding:24px 20px 40px;overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform .28s ease,opacity .24s ease,visibility .24s ease;
    margin-left:0;
  }
  .nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{display:block;padding:16px 0;font-size:18px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav .btn-block{display:inline-flex;margin-top:26px}
  .header-tools .btn-primary{display:none}
  .hero-media{aspect-ratio:16/10}
  .zigzag,.zigzag--reverse{grid-template-columns:1fr;gap:24px}
  .zigzag--reverse .zigzag-media{order:0}
  .zigzag--reverse .zigzag-body{order:0}
  .zigzag-media{aspect-ratio:16/10}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  :root{--section-gap:56px}
  body{font-size:16px;line-height:1.8}
  .page-hero{padding:40px 0 36px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:16px}
  .section-head h2,.split-head h2{font-size:24px}
  .stat-row{grid-template-columns:1fr 1fr;gap:20px 0;margin-top:32px}
  .stat-row li{padding:0 16px}
  .stat-row li:nth-child(3){border-left:none;padding-left:0}
  .paper{padding:22px 20px}
  .paper p{font-size:16px}
  .access-list li{grid-template-columns:1fr;gap:6px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-top{padding:44px 0 28px}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .page-hero h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .btn{font-size:14.5px}
  .stat-num{font-size:22px}
}

/* roulang page: category4 */
:root{
    --bg-base:#0A0D10;
    --bg-panel:#121820;
    --bg-elev:#18202A;
    --line:#232C36;
    --line-neon:rgba(35,224,176,.35);
    --neon:#23E0B0;
    --neon-dim:#14A98A;
    --amber:#FFA23A;
    --violet:#7B61FF;
    --paper:#F6F4EF;
    --ink:#1B1F23;
    --ink-2:#4A5259;
    --muted:#8A94A0;
    --text:#D7DEE6;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-media:12px;
    --radius-badge:6px;
    --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    --shadow-paper:0 1px 2px rgba(10,15,20,.06),0 10px 28px -14px rgba(10,15,20,.22);
    --inset-line:inset 0 1px 0 rgba(255,255,255,.03);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg-base);
    color:var(--text);
    font-family:var(--font-cn);
    font-size:16.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body.nav-open{overflow:hidden}
  h1,h2,h3,h4{margin:0;color:#fff;font-weight:700;line-height:1.3;letter-spacing:-.2px}
  p{margin:0 0 1.15em}
  p:last-child{margin-bottom:0}
  a{color:var(--neon);text-decoration:none;transition:color .2s ease,border-color .2s ease}
  a:hover{color:var(--amber)}
  img{max-width:100%;display:block}
  ul,ol{margin:0;padding:0;list-style:none}
  button{font-family:inherit;font-size:inherit;cursor:pointer}
  input{font-family:inherit}
  :focus-visible{outline:2px solid var(--neon);outline-offset:2px}
  .vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .mono{font-family:var(--font-mono);letter-spacing:.02em}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:var(--bg-base);
    border-bottom:1px solid var(--line);
    transition:border-color .25s ease;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line-neon)}
  .header-inner{display:flex;align-items:center;gap:22px;height:68px;transition:height .25s ease}
  .site-header.is-scrolled .header-inner{height:60px}
  .logo{
    display:flex;align-items:center;gap:10px;
    font-size:16px;font-weight:700;color:#fff;letter-spacing:.4px;white-space:nowrap;
  }
  .logo:hover{color:var(--neon)}
  .logo-mark{
    width:22px;height:22px;border:1px solid var(--neon);border-radius:6px;position:relative;
    box-shadow:0 0 14px rgba(35,224,176,.35);flex:0 0 auto;
  }
  .logo-mark::after{content:"";position:absolute;inset:5px;background:var(--neon);border-radius:2px;opacity:.85}

  .nav{margin-left:auto;display:flex;align-items:center;gap:26px}
  .nav-list{display:flex;align-items:center;gap:26px}
  .nav-link{
    position:relative;display:inline-block;padding:6px 0;
    font-size:14px;font-weight:500;color:var(--text);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--neon);opacity:0;box-shadow:0 0 12px rgba(35,224,176,.7);
    transition:opacity .2s ease;
  }
  .nav-link:hover,.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55)}
  .nav-link:hover::after,.nav-link.is-active::after{opacity:1}
  .nav .btn-block{display:none}

  .header-tools{display:flex;align-items:center;gap:12px;margin-left:4px}
  .icon-btn{
    width:38px;height:38px;display:grid;place-items:center;
    background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text);
    transition:border-color .2s ease,color .2s ease,background .2s ease;
  }
  .icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
  .icon-btn:hover{border-color:var(--line-neon);color:var(--neon);background:rgba(35,224,176,.08)}
  .nav-toggle{
    display:none;width:40px;height:38px;background:transparent;border:1px solid var(--line);
    border-radius:10px;padding:9px 10px;flex-direction:column;justify-content:space-between;
  }
  .nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .2s ease}
  .nav-toggle:hover{border-color:var(--line-neon)}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.is-open span:nth-child(2){opacity:0}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  .search-panel{display:none;border-top:1px solid var(--line);background:var(--bg-panel)}
  .search-panel.is-open{display:block}
  .search-inner{display:flex;gap:12px;padding:16px 0}
  .search-inner input{
    flex:1;height:46px;padding:0 16px;border-radius:var(--radius-btn);
    background:var(--bg-base);border:1px solid var(--line);color:var(--text);font-size:15px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .search-inner input::placeholder{color:var(--muted)}
  .search-inner input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(35,224,176,.15)}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:14.5px;font-weight:600;letter-spacing:.2px;border:1px solid transparent;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  }
  .btn-primary{background:var(--amber);color:#141414;border-color:var(--amber)}
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,162,58,.55);color:#141414}
  .btn-ghost{background:transparent;color:var(--neon);border-color:var(--line-neon)}
  .btn-ghost:hover{background:rgba(35,224,176,.10);color:var(--neon)}
  .btn-sm{height:38px;padding:0 16px;font-size:13.5px}
  .btn-block{width:100%}
  .btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;
    padding:56px 0 52px;
    border-bottom:1px solid var(--line);
    background-image:
      linear-gradient(rgba(35,224,176,.05) 1px,transparent 1px),
      linear-gradient(90deg,rgba(35,224,176,.05) 1px,transparent 1px);
    background-size:56px 56px;
  }
  .page-hero::after{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,var(--line-neon),transparent);
  }
  .hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:44px;align-items:center}
  .crumbs{font-size:13px;color:var(--muted);margin-bottom:18px}
  .crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
  .crumbs li::after{content:"/";margin-left:8px;color:var(--line)}
  .crumbs li:last-child::after{content:"";margin:0}
  .crumbs a{color:var(--muted)}
  .crumbs a:hover{color:var(--neon)}
  .crumbs [aria-current]{color:var(--text)}
  .hero-tag{
    display:inline-block;padding:4px 10px;margin-bottom:16px;
    border:1px solid var(--line-neon);border-radius:var(--radius-badge);
    font-family:var(--font-mono);font-size:12px;color:var(--neon);letter-spacing:.08em;
  }
  .page-hero h1{font-size:clamp(28px,3.4vw,44px);font-weight:900;line-height:1.22;letter-spacing:-.5px}
  .hero-sub{margin-top:16px;max-width:620px;font-size:16.5px;color:var(--text)}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line)}
  .hero-meta div{font-size:13px;color:var(--muted)}
  .hero-meta b{display:block;font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--neon);line-height:1.4}
  .hero-media{border-radius:var(--radius-media);overflow:hidden;border:1px solid var(--line-neon);position:relative}
  .hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .hero-media figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:12.5px;color:var(--text);
    background:linear-gradient(180deg,rgba(10,13,16,0),rgba(10,13,16,.86));
  }

  /* ---------- sections ---------- */
  .section{padding:82px 0;border-top:1px solid var(--line)}
  .section:first-of-type{border-top:0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
  .section-title-wrap{display:flex;gap:16px;align-items:flex-start}
  .section-index{
    writing-mode:vertical-rl;font-family:var(--font-mono);font-size:12px;color:var(--neon);
    letter-spacing:.18em;padding-top:4px;border-left:1px solid var(--line-neon);padding-left:6px;
  }
  .section-head h2{font-size:clamp(23px,2.6vw,32px);font-weight:700}
  .section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:640px}
  .link-more{font-size:14px;font-weight:600;border-bottom:1px solid var(--neon);padding-bottom:2px;color:var(--neon);white-space:nowrap}
  .link-more:hover{border-color:var(--amber);color:var(--amber)}

  /* ---------- table ---------- */
  .table-scroll{
    overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);
    background:var(--bg-panel);box-shadow:var(--inset-line);
    -webkit-overflow-scrolling:touch;
  }
  table{width:100%;border-collapse:collapse;min-width:820px}
  caption{text-align:left;padding:16px 18px 0;font-size:13px;color:var(--muted)}
  thead th{
    background:var(--bg-elev);height:52px;padding:0 18px;text-align:left;
    font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.05em;white-space:nowrap;
    border-bottom:1px solid var(--line);
  }
  tbody th,tbody td{
    height:52px;padding:0 18px;text-align:left;font-size:14.5px;color:var(--text);
    border-bottom:1px solid var(--line);white-space:nowrap;
  }
  tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
  tbody tr:nth-child(even) th,tbody tr:nth-child(even) td{background:rgba(255,255,255,.015)}
  tbody th{font-weight:600;color:#fff;position:sticky;left:0;background:var(--bg-panel);z-index:2}
  tbody tr:nth-child(even) th{background:#141B24}
  .col-highlight{background:rgba(35,224,176,.055)!important}
  thead th.col-highlight{color:var(--neon)}
  .yes{color:var(--neon);font-weight:600}
  .no{color:var(--muted)}
  .table-note{margin-top:14px;font-size:13px;color:var(--muted)}

  /* ---------- spec cards ---------- */
  .spec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:34px}
  .spec-card{
    position:relative;padding:26px 24px 24px;
    background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--inset-line);
    transition:transform .2s ease,border-color .2s ease;
  }
  .spec-card::before{
    content:"";position:absolute;top:0;right:0;width:0;height:2px;background:var(--neon);
    border-radius:0 2px 0 0;transition:width .25s ease;
  }
  .spec-card:hover{transform:translateY(-2px);border-color:var(--line-neon)}
  .spec-card:hover::before{width:52px}
  .spec-num{
    font-family:var(--font-mono);font-size:12px;color:var(--neon);letter-spacing:.14em;
    position:absolute;top:22px;right:22px;
  }
  .spec-card h3{font-size:19px;padding-right:52px}
  .spec-card .spec-desc{margin-top:10px;font-size:14.5px;color:var(--muted)}
  .spec-list{margin-top:20px;border-top:1px solid var(--line)}
  .spec-list li{
    display:flex;justify-content:space-between;gap:16px;
    padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;
  }
  .spec-list li:last-child{border-bottom:0}
  .spec-list span:first-child{color:var(--muted)}
  .spec-list span:last-child{font-family:var(--font-mono);color:var(--text)}

  /* ---------- guide panels ---------- */
  .guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .paper{
    background:var(--paper);color:var(--ink);border-radius:var(--radius-card);
    padding:26px 26px 24px;box-shadow:var(--shadow-paper);
  }
  .paper h3{color:var(--ink);font-size:21px;line-height:1.45}
  .paper .paper-kicker{
    display:inline-block;margin-bottom:12px;font-family:var(--font-mono);font-size:12px;
    color:#0E7F66;letter-spacing:.12em;
  }
  .paper p{font-size:16px;line-height:1.85;color:var(--ink-2)}
  .paper p strong{color:var(--ink)}
  .paper ol{margin-top:14px;counter-reset:step}
  .paper ol li{
    position:relative;padding-left:28px;margin-bottom:10px;font-size:15.5px;color:var(--ink-2);
  }
  .paper ol li::before{
    counter-increment:step;content:counter(step,decimal-leading-zero);
    position:absolute;left:0;top:2px;font-family:var(--font-mono);font-size:12px;color:#0E7F66;
  }

  /* ---------- faq ---------- */
  .faq{display:grid;gap:14px;max-width:900px}
  .faq-item{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-panel);transition:border-color .2s ease}
  .faq-item.is-open{border-color:var(--line-neon)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 22px;background:transparent;border:0;text-align:left;
    font-size:17px;font-weight:600;color:#fff;line-height:1.6;
  }
  .faq-q:hover{color:var(--neon)}
  .faq-icon{
    flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .25s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--neon);border-radius:2px;
  }
  .faq-icon::before{left:0;right:0;top:9px;height:2px}
  .faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .25s ease}
  .faq-item.is-open .faq-icon{transform:rotate(90deg)}
  .faq-item.is-open .faq-icon::after{opacity:0}
  .faq-a{padding:0 22px 22px;animation:fadeIn .2s ease}
  .faq-a p{font-size:15px;line-height:1.9;color:var(--text)}
  @keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
  .faq-foot{margin-top:26px;font-size:14.5px;color:var(--muted)}
  .faq-foot a{color:var(--neon);border-bottom:1px solid var(--neon);padding-bottom:1px}

  /* ---------- cta ---------- */
  .cta-band{
    border-top:1px solid var(--line-neon);border-bottom:1px solid var(--line);
    background-color:var(--bg-panel);
    background-image:
      linear-gradient(rgba(35,224,176,.07) 1px,transparent 1px),
      linear-gradient(90deg,rgba(35,224,176,.07) 1px,transparent 1px);
    background-size:40px 40px;
    padding:52px 0;
  }
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
  .cta-inner h2{font-size:clamp(21px,2.4vw,28px);max-width:620px}
  .cta-inner p{margin-top:10px;font-size:14.5px;color:var(--muted)}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

  /* ---------- footer ---------- */
  .site-footer{border-top:1px solid var(--line-neon);background:var(--bg-base);padding:60px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
  .footer-about{font-size:14px;color:var(--muted);max-width:300px}
  .footer-col h3{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:16px}
  .footer-col ul{display:grid;gap:10px}
  .footer-col li a,.footer-col p{font-size:14px;color:var(--muted)}
  .footer-col li a:hover{color:var(--neon)}
  .social-row{display:flex;gap:10px;margin-top:18px}
  .social-row a{
    width:36px;height:36px;display:grid;place-items:center;
    border:1px solid var(--line);border-radius:10px;color:var(--muted);
    transition:color .2s ease,border-color .2s ease,background .2s ease;
  }
  .social-row svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
  .social-row a:hover{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08)}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  }
  .footer-bottom small{font-size:13px;color:var(--muted)}

  /* ---------- responsive ---------- */
  @media (max-width:1279px){
    .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  }
  @media (max-width:1023px){
    .container{padding:0 24px}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
    .section{padding:72px 0}
  }
  @media (max-width:900px){
    .nav-toggle{display:flex}
    .nav{
      position:fixed;left:0;right:0;top:68px;bottom:0;margin:0;
      flex-direction:column;align-items:stretch;gap:0;
      background:var(--bg-base);padding:22px 24px 32px;
      transform:translateX(102%);opacity:0;pointer-events:none;
      transition:transform .28s ease,opacity .22s ease;
      overflow-y:auto;border-top:1px solid var(--line);
    }
    .nav.is-open{transform:none;opacity:1;pointer-events:auto}
    .nav-list{flex-direction:column;align-items:stretch;gap:0}
    .nav-list li{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease}
    .nav.is-open .nav-list li{opacity:1;transform:none}
    .nav.is-open .nav-list li:nth-child(1){transition-delay:.04s}
    .nav.is-open .nav-list li:nth-child(2){transition-delay:.08s}
    .nav.is-open .nav-list li:nth-child(3){transition-delay:.12s}
    .nav.is-open .nav-list li:nth-child(4){transition-delay:.16s}
    .nav.is-open .nav-list li:nth-child(5){transition-delay:.20s}
    .nav.is-open .nav-list li:nth-child(6){transition-delay:.24s}
    .nav-link{display:block;padding:16px 0;font-size:18px;border-bottom:1px solid var(--line)}
    .nav-link::after{display:none}
    .nav .btn-block{display:inline-flex;margin-top:24px}
    .header-tools .btn-sm{display:none}
    .hero-grid{grid-template-columns:1fr;gap:28px}
    .page-hero{padding:40px 0 38px}
    .hero-media{order:-1}
    .hero-media img{aspect-ratio:16/9}
    .guide-grid{grid-template-columns:1fr}
  }
  @media (max-width:767px){
    body{font-size:16px;line-height:1.8}
    .container{padding:0 16px}
    .section{padding:56px 0}
    .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px}
    .spec-grid{grid-template-columns:1fr}
    .hero-actions{gap:12px}
    .hero-actions .btn{width:100%}
    .hero-meta{gap:18px}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr}
    .faq-q{font-size:16px;padding:16px 18px}
    .faq-a{padding:0 18px 18px}
    .paper{padding:22px 20px}
    table{min-width:720px}
  }
  @media (max-width:520px){
    body{font-size:15.5px}
    .page-hero h1{font-size:30px}
    .section-head h2{font-size:24px}
    .hero-meta b{font-size:18px}
    .spec-card{padding:22px 18px 20px}
  }

/* roulang page: category5 */
:root{
  --bg-base:#0A0D10;
  --bg-panel:#121820;
  --bg-elev:#18202A;
  --line:#232C36;
  --line-neon:rgba(35,224,176,.35);
  --neon:#23E0B0;
  --neon-dim:#14A98A;
  --amber:#FFA23A;
  --violet:#7B61FF;
  --paper:#F6F4EF;
  --ink:#1B1F23;
  --ink-2:#4A5259;
  --muted:#8A94A0;
  --text:#D7DEE6;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-card:14px;
  --r-btn:10px;
  --r-media:12px;
  --r-badge:6px;
  --container:1200px;
  --gap:24px;
  --shadow-paper:0 1px 2px rgba(10,15,20,.06),0 10px 28px -14px rgba(10,15,20,.22);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-lock{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.3px;color:#fff;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.mono{font-family:var(--font-mono);}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--bg-base);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.is-scrolled{
  box-shadow:0 1px 0 rgba(35,224,176,.28),0 16px 34px -26px rgba(35,224,176,.4);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:68px;
  transition:height .24s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  letter-spacing:.4px;
  color:#fff;
  white-space:nowrap;
}
.logo-mark{
  width:22px;
  height:22px;
  border-radius:5px;
  background:linear-gradient(135deg,var(--neon),var(--neon-dim) 55%,rgba(123,97,255,.85));
  box-shadow:0 0 0 1px rgba(35,224,176,.45),0 0 16px -4px rgba(35,224,176,.7);
  display:inline-block;
  flex:none;
}
.nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(35,224,176,.75);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.5);}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.55);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav .btn-block{display:none;}
.header-tools{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:6px;
}
.icon-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--muted);
  cursor:pointer;
  transition:.2s ease;
}
.icon-btn:hover{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08);}
.nav-toggle{
  width:38px;
  height:38px;
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:4px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:.22s ease;
}
.nav-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.search-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-panel);
}
.search-panel.is-open{display:block;}
.search-inner{
  display:flex;
  gap:12px;
  padding:14px 0;
}
.search-inner input{
  flex:1;
  height:42px;
  padding:0 14px;
  background:var(--bg-base);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  font-family:inherit;
  font-size:15px;
}
.search-inner input:focus{border-color:var(--neon);box-shadow:0 0 0 3px rgba(35,224,176,.14);outline:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;}
.btn-block{display:flex;width:100%;}
.btn-primary{
  background:var(--amber);
  color:#241505;
  box-shadow:0 6px 18px -12px rgba(255,162,58,.7);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,162,58,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-primary[disabled],.btn-primary.is-loading{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-ghost{
  background:transparent;
  border-color:var(--line-neon);
  color:var(--neon);
}
.btn-ghost:hover{background:rgba(35,224,176,.10);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--neon);
  border-bottom:1px solid var(--line-neon);
  padding-bottom:2px;
  transition:.2s ease;
}
.btn-text:hover{color:var(--amber);border-color:var(--amber);}

/* ---------- 首屏 ---------- */
.hero-sm{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(rgba(255,255,255,.024) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.024) 1px,transparent 1px);
  background-size:48px 48px,48px 48px;
}
.hero-sm::before{
  content:"";
  position:absolute;
  left:-12%;
  top:0;
  width:62%;
  height:100%;
  background:linear-gradient(112deg,transparent 47%,rgba(35,224,176,.14) 50%,transparent 53%);
  pointer-events:none;
}
.hero-sm .container{position:relative;z-index:1;}
.hero-inner{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:44px;
  align-items:center;
  padding:52px 0 46px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .sep{color:#3A4550;}
.hero-sm h1{
  font-size:48px;
  line-height:1.22;
  letter-spacing:-.5px;
  font-weight:900;
  margin-bottom:16px;
}
.hero-sm h1 em{
  font-style:normal;
  color:var(--neon);
  text-shadow:0 0 22px rgba(35,224,176,.35);
}
.hero-lead{
  max-width:560px;
  font-size:17px;
  color:var(--muted);
  line-height:1.8;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  font-size:12px;
  color:var(--text);
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  background:rgba(24,32,42,.7);
  transition:.2s ease;
}
.tag:hover{border-color:var(--line-neon);color:var(--neon);}
.hero-media{
  position:relative;
  border-radius:var(--r-media);
  overflow:hidden;
  border:1px solid var(--line-neon);
  aspect-ratio:16/10;
  background:linear-gradient(135deg,rgba(35,224,176,.22),rgba(10,13,16,0));
}
.hero-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 指标条 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.metric{
  padding:22px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0;}
.metric b{
  display:block;
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:700;
  color:var(--neon);
  letter-spacing:-.5px;
}
.metric span{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section + .section{border-top:1px solid var(--line);}
.section-head{position:relative;margin-bottom:36px;}
.section-head .vmark{
  position:absolute;
  left:-28px;
  top:4px;
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  color:#4A5560;
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--neon-dim);
  text-transform:uppercase;
}
.section-head h2{
  font-size:32px;
  line-height:1.3;
  margin:10px 0 12px;
}
.section-head p{
  max-width:660px;
  color:var(--muted);
  font-size:16px;
}

/* ---------- 卡片 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.card{
  position:relative;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.card::after{
  content:"";
  position:absolute;
  top:12px;
  right:12px;
  width:0;
  height:0;
  border-top:2px solid var(--neon);
  border-right:2px solid var(--neon);
  opacity:0;
  transition:.22s ease;
}
.card:hover{transform:translateY(-2px);border-color:var(--line-neon);}
.card:hover::after{opacity:1;width:14px;height:14px;}
.card h3{font-size:21px;line-height:1.45;margin-bottom:10px;}
.card p{font-size:15px;color:var(--muted);}
.card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
}
.card-num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
}
.card-icon{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line-neon);
  color:var(--neon);
  background:rgba(35,224,176,.06);
}
.card-list{margin-top:16px;display:grid;gap:9px;}
.card-list li{
  position:relative;
  padding-left:16px;
  font-size:14.5px;
  color:var(--text);
}
.card-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:1px;
  background:var(--neon);
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:3px 9px;
  font-size:11.5px;
  font-family:var(--font-mono);
  letter-spacing:.08em;
  border-radius:var(--r-badge);
  border:1px solid var(--line);
  color:var(--muted);
}
.badge-neon{border-color:var(--line-neon);color:var(--neon);}
.badge-violet{border-color:rgba(123,97,255,.5);color:#A79BFF;}
.badge-amber{border-color:rgba(255,162,58,.5);color:var(--amber);}

/* ---------- 纸面板 ---------- */
.paper{
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-paper);
}
.paper p{color:var(--ink-2);}
.paper h3{color:var(--ink);}
.paper-block{
  padding:20px 22px;
  max-width:760px;
  font-size:16px;
  line-height:1.85;
}

/* ---------- 步骤条 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-panel);
}
.step{
  position:relative;
  display:block;
  width:100%;
  text-align:left;
  padding:28px 22px 30px;
  background:transparent;
  border:0;
  border-right:1px solid var(--line);
  color:inherit;
  cursor:pointer;
  transition:background .22s ease;
}
.step:last-child{border-right:0;}
.step::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:2px;
  background:var(--neon);
  box-shadow:0 0 14px rgba(35,224,176,.7);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .26s ease;
}
.step:hover{background:var(--bg-elev);}
.step.is-active{background:var(--bg-elev);}
.step.is-active::before{transform:scaleX(1);}
.step-num{
  display:block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--muted);
  margin-bottom:14px;
}
.step.is-active .step-num{color:var(--neon);text-shadow:0 0 12px rgba(35,224,176,.5);}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.7;}
.steps-note{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:14px 26px;
  font-size:13.5px;
  color:var(--muted);
}
.steps-note b{color:var(--text);font-family:var(--font-mono);}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow-x:auto;
  background:var(--bg-panel);
}
table{width:100%;border-collapse:collapse;min-width:780px;}
thead th{
  height:52px;
  padding:0 18px;
  text-align:left;
  font-size:14px;
  font-weight:600;
  color:#fff;
  background:var(--bg-elev);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody th,tbody td{
  height:52px;
  padding:0 18px;
  text-align:left;
  font-size:14.5px;
  color:var(--text);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0;}
tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
tbody th{
  font-weight:600;
  color:#fff;
  background:rgba(24,32,42,.6);
}
.yes{color:var(--neon);font-family:var(--font-mono);}
.no{color:var(--muted);font-family:var(--font-mono);}
.is-reco{position:relative;}
thead th.is-reco{
  color:var(--neon);
  background:linear-gradient(180deg,rgba(35,224,176,.12),rgba(24,32,42,.9));
  box-shadow:inset 0 0 0 1px var(--line-neon);
}
.reco-flag{
  display:inline-block;
  margin-left:8px;
  padding:2px 7px;
  font-size:11px;
  font-family:var(--font-mono);
  border-radius:4px;
  border:1px solid var(--line-neon);
  color:var(--neon);
}
.table-caption{
  margin-top:14px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 双栏：问答 + 表单 ---------- */
.split{
  display:grid;
  grid-template-columns:1.55fr 1fr;
  gap:42px;
  align-items:start;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--bg-panel);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s ease;
}
.faq-item.is-open{border-color:var(--line-neon);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--neon);}
.faq-item.is-open .faq-q{color:var(--neon);}
.faq-q svg{flex:none;transition:transform .24s ease;color:var(--neon-dim);}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a-inner{
  margin:0 20px 20px;
  padding:16px 18px;
  background:var(--paper);
  color:var(--ink-2);
  border-radius:10px;
  font-size:15px;
  line-height:1.9;
  box-shadow:var(--shadow-paper);
}

/* ---------- 表单 ---------- */
.form-card{
  position:sticky;
  top:96px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}
.form-card h3{font-size:21px;margin-bottom:8px;}
.form-intro{font-size:14px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  margin-bottom:8px;
  font-size:13.5px;
  color:var(--muted);
}
.field input,.field select,.field textarea{
  width:100%;
  background:var(--bg-base);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  font-family:inherit;
  font-size:15px;
  padding:12px 14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--neon);
  box-shadow:0 0 0 3px rgba(35,224,176,.14);
  outline:none;
}
.field.is-error input,.field.is-error textarea,.field.is-error select{border-color:var(--amber);}
.err{
  display:none;
  margin-top:6px;
  font-size:13px;
  color:var(--amber);
}
.field.is-error .err{display:block;}
.check-field{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin:18px 0 20px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}
.check-field input{
  width:17px;
  height:17px;
  margin-top:3px;
  accent-color:var(--neon);
  flex:none;
}
.check-field.is-error{color:var(--amber);}
.form-note{
  margin-top:14px;
  font-size:12.5px;
  color:var(--muted);
  font-family:var(--font-mono);
  letter-spacing:.02em;
}
.form-success{
  display:none;
  border:1px solid var(--line-neon);
  border-radius:var(--r-card);
  background:rgba(35,224,176,.07);
  padding:22px;
  text-align:center;
}
.form-success.is-show{display:block;}
.form-success .ok-mark{
  width:44px;
  height:44px;
  margin:0 auto 12px;
  border-radius:50%;
  border:1px solid var(--line-neon);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--neon);
}
.form-success h4{font-size:19px;margin-bottom:8px;}
.form-success p{font-size:14px;color:var(--muted);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:34px 34px;
  border:1px solid var(--line);
  border-radius:16px;
  background-image:
    linear-gradient(rgba(35,224,176,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,224,176,.07) 1px,transparent 1px);
  background-size:34px 34px,34px 34px;
  background-color:var(--bg-panel);
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--muted);}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}

/* ---------- 骨架 / 空态 ---------- */
.skeleton{
  height:18px;
  border-radius:6px;
  background:linear-gradient(90deg,var(--bg-elev) 25%,#1E2833 50%,var(--bg-elev) 75%);
  background-size:200% 100%;
  animation:shimmer 1.4s infinite linear;
}
@keyframes shimmer{0%{background-position:200% 0;}100%{background-position:-200% 0;}}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:34px 24px;
  text-align:center;
  background:var(--bg-panel);
}
.empty-state h3{font-size:17px;margin-bottom:8px;}
.empty-state p{font-size:13.5px;color:var(--muted);margin-bottom:18px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-base);
  box-shadow:inset 0 1px 0 rgba(35,224,176,.22);
  margin-top:0;
}
.footer-top{padding:66px 0 46px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:38px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-about{
  font-size:14px;
  color:var(--muted);
  max-width:320px;
  line-height:1.8;
}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col li a{
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-col li a:hover{color:var(--neon);}
.footer-col p{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:10px;
}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:9px;
  color:var(--muted);
  transition:.2s ease;
}
.social-row a:hover{color:var(--neon);border-color:var(--line-neon);background:rgba(35,224,176,.08);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 30px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:44px 0 40px;}
  .hero-sm h1{font-size:38px;}
  .split{grid-template-columns:1fr;gap:34px;}
  .form-card{position:static;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step:nth-child(2){border-right:0;}
  .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .section-head .vmark{display:none;}
}
@media (max-width:900px){
  .nav{
    position:fixed;
    left:0;
    right:0;
    top:68px;
    bottom:0;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:18px 24px 110px;
    background:var(--bg-base);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    z-index:70;
  }
  .nav.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{opacity:0;transform:translateY(6px);}
  .nav.is-open .nav-list li{animation:navItem .3s ease forwards;}
  .nav.is-open .nav-list li:nth-child(1){animation-delay:.04s;}
  .nav.is-open .nav-list li:nth-child(2){animation-delay:.08s;}
  .nav.is-open .nav-list li:nth-child(3){animation-delay:.12s;}
  .nav.is-open .nav-list li:nth-child(4){animation-delay:.16s;}
  .nav.is-open .nav-list li:nth-child(5){animation-delay:.2s;}
  .nav.is-open .nav-list li:nth-child(6){animation-delay:.24s;}
  @keyframes navItem{to{opacity:1;transform:none;}}
  .nav-link{display:block;font-size:18px;padding:15px 0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav .btn-block{display:flex;margin-top:22px;}
  .header-tools .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric{border-bottom:1px solid var(--line);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:0;}
  .grid-2{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .section{padding:56px 0;}
  .hero-sm h1{font-size:32px;}
  .hero-lead{font-size:16px;}
  .section-head h2{font-size:24px;}
  .grid-3,.grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-bottom:1px solid var(--line);}
  .step:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .table-wrap{border-radius:12px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:420px){
  .container{padding:0 16px;}
  .hero-sm h1{font-size:29px;}
  .metric b{font-size:22px;}
  .btn{width:100%;}
  .search-inner .btn{width:auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}