:root{
  --main:#22d3ee;
  --accent:#fb923c;
  --bg:#0f172a;
  --text:#e2e8f0;
  --card:#16213a;
  --card-2:#1b2743;
  --line:rgba(226,232,240,.09);
  --muted:#93a3bd;
  --sidebar-w:264px;
  --font:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(560px 460px at 12% -6%, rgba(34,211,238,.20), transparent 68%),
    radial-gradient(520px 420px at 92% 8%, rgba(251,146,60,.16), transparent 70%),
    radial-gradient(680px 520px at 70% 96%, rgba(34,211,238,.10), transparent 72%);
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:linear-gradient(180deg,rgba(22,33,58,.96),rgba(15,23,42,.98));
  border-right:1px solid var(--line);
  padding:26px 20px 30px;
  z-index:1040;
  overflow-y:auto;
  backdrop-filter:blur(14px);
}
.brand-wrap{
  display:flex;align-items:center;gap:9px;
  font-size:1.34rem;font-weight:800;letter-spacing:.4px;
  padding:6px 4px 20px;
  color:#fff;
}
.brand-wrap i{color:var(--main);font-size:1.2rem}
.brand-wrap span.brand-text{white-space:nowrap}
.brand-badge{
  font-size:.62rem;font-weight:700;letter-spacing:.6px;
  color:var(--accent);
  border:1px solid rgba(251,146,60,.42);
  border-radius:999px;
  padding:1px 8px;
  margin-left:2px;
  white-space:nowrap;
}
.side-label{
  font-size:.68rem;font-weight:700;letter-spacing:.16em;
  color:var(--muted);
  text-transform:uppercase;
  margin:14px 6px 10px;
}
.side-nav{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.side-nav a{
  display:flex;align-items:center;gap:11px;
  padding:11px 14px;
  border-radius:999px;
  font-size:.93rem;font-weight:500;
  color:#c4d0e2;
  transition:.25s ease;
  border:1px solid transparent;
}
.side-nav a i{width:17px;text-align:center;color:var(--muted);transition:.25s}
.side-nav a:hover,.side-nav a.active{
  background:rgba(34,211,238,.10);
  border-color:rgba(34,211,238,.30);
  color:#fff;
}
.side-nav a:hover i,.side-nav a.active i{color:var(--main)}
.side-cta{
  margin-top:22px;
  padding:18px 16px;
  border-radius:20px;
  background:linear-gradient(150deg,rgba(34,211,238,.14),rgba(251,146,60,.12));
  border:1px solid var(--line);
}
.side-cta p{font-size:.8rem;color:var(--muted);margin:0 0 11px}
.btn-round{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border-radius:999px;
  padding:9px 18px;
  font-size:.83rem;font-weight:600;
  border:none;
  cursor:pointer;
  transition:.25s ease;
}
.btn-main{background:var(--main);color:#06222a}
.btn-main:hover{background:#5ceaff;transform:translateY(-2px);color:#06222a}
.btn-ghost{background:transparent;border:1px solid rgba(226,232,240,.26);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-accent{background:var(--accent);color:#2a1405}
.btn-accent:hover{background:#ffb278;transform:translateY(-2px);color:#2a1405}
.w-100{width:100%}

/* 移动端顶栏 */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:1050;
  background:rgba(15,23,42,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  padding:12px 16px;
  align-items:center;justify-content:space-between;
}
.mobile-bar .brand-wrap{padding:0;font-size:1.1rem}
.burger{
  background:transparent;border:1px solid rgba(226,232,240,.24);
  border-radius:999px;color:var(--text);
  width:40px;height:40px;display:grid;place-items:center;
}
.mobile-menu{
  display:none;
  position:fixed;inset:0;top:0;z-index:1060;
  background:rgba(9,14,26,.97);
  backdrop-filter:blur(8px);
  padding:22px 20px;
  overflow-y:auto;
}
.mobile-menu.open{display:block}
.mobile-menu .close-x{
  background:transparent;border:1px solid rgba(226,232,240,.24);
  border-radius:999px;color:var(--text);width:40px;height:40px;
  display:grid;place-items:center;margin-left:auto;
}
.mobile-menu ul{list-style:none;padding:0;margin:22px 0 0;display:flex;flex-direction:column;gap:8px}
.mobile-menu ul a{
  display:block;padding:13px 18px;border-radius:999px;
  background:rgba(22,33,58,.8);border:1px solid var(--line);
  font-size:1rem;font-weight:500;
}

/* ============ 主内容 ============ */
.page{
  margin-left:var(--sidebar-w);
  position:relative;
  z-index:1;
  padding:0 clamp(18px,4vw,58px) 0;
  max-width:1400px;
}
section{padding:72px 0}

/* Hero 关键词标签云 */
.hero{padding:70px 0 56px;position:relative}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:999px;
  padding:6px 16px;
  font-size:.76rem;font-weight:600;letter-spacing:.06em;
  color:var(--main);
  border:1px solid rgba(34,211,238,.34);
  background:rgba(34,211,238,.07);
  margin-bottom:26px;
}
.hero h1{
  font-size:clamp(2.3rem,6.4vw,4rem);
  font-weight:900;
  line-height:1.06;
  letter-spacing:-.02em;
  margin:0 0 22px;
  color:#fff;
}
.hero h1 .hl{color:var(--main)}
.hero h1 .hl2{color:var(--accent)}
.hero-lead{
  font-size:clamp(1rem,1.5vw,1.11rem);
  color:#b9c6da;
  max-width:660px;
  margin:0 0 32px;
  font-weight:400;
}
.tag-cloud{
  display:flex;flex-wrap:wrap;gap:10px;
  margin:0 0 34px;
  max-width:820px;
}
.tag-cloud span{
  border-radius:999px;
  padding:7px 17px;
  font-size:.85rem;font-weight:500;
  border:1px solid var(--line);
  background:rgba(22,33,58,.72);
  color:#bcc9dc;
  transition:.28s ease;
  cursor:default;
}
.tag-cloud span:nth-child(3n+1){border-color:rgba(34,211,238,.4);color:#8ceaf7}
.tag-cloud span:nth-child(3n+2){border-color:rgba(251,146,60,.36);color:#f7c193}
.tag-cloud span:hover{transform:translateY(-3px);background:rgba(34,211,238,.14);color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:34px;
  margin-top:46px;padding-top:30px;
  border-top:1px solid var(--line);
}
.hero-stats div b{display:block;font-size:1.85rem;font-weight:800;color:#fff;letter-spacing:-.01em}
.hero-stats div span{font-size:.82rem;color:var(--muted)}

/* 区块标题 */
.sec-head{margin-bottom:38px;max-width:760px}
.sec-head .kicker{
  font-size:.74rem;font-weight:700;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;
  display:block;margin-bottom:12px;
}
.sec-head h2{
  font-size:clamp(1.75rem,3.6vw,2.5rem);
  font-weight:800;
  color:#fff;letter-spacing:-.015em;
  line-height:1.2;margin:0 0 14px;
}
.sec-head p{color:var(--muted);margin:0;font-size:.97rem}

/* 手风琴(使用说明) */
.acc{display:flex;flex-direction:column;gap:14px;max-width:900px}
.acc-item{
  border:1px solid var(--line);
  border-radius:20px;
  background:rgba(22,33,58,.66);
  overflow:hidden;
  transition:.3s ease;
}
.acc-item.open{border-color:rgba(34,211,238,.36);background:rgba(27,39,67,.9)}
.acc-head{
  display:flex;align-items:center;gap:16px;
  width:100%;background:transparent;border:none;text-align:left;
  padding:20px 24px;color:#fff;cursor:pointer;
  font-family:inherit;
}
.acc-num{
  flex:0 0 auto;
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  font-size:.83rem;font-weight:700;
  background:rgba(34,211,238,.14);color:var(--main);
  border:1px solid rgba(34,211,238,.3);
}
.acc-item.open .acc-num{background:var(--accent);color:#2a1405;border-color:transparent}
.acc-head h3{font-size:1.03rem;font-weight:700;margin:0;flex:1;letter-spacing:-.01em}
.acc-head i.chev{color:var(--muted);transition:.3s}
.acc-item.open .acc-head i.chev{transform:rotate(180deg);color:var(--main)}
.acc-body{max-height:0;overflow:hidden;transition:max-height .42s cubic-bezier(.4,0,.2,1)}
.acc-body-inner{padding:0 24px 24px 74px;color:#b6c4d8;font-size:.94rem}
.acc-body-inner p{margin:0 0 10px}
.acc-body-inner ul{margin:0;padding-left:18px}
.acc-body-inner li{margin-bottom:6px}

/* 特色网格(图标列表) */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(272px,1fr));gap:20px}
.feat-card{
  border:1px solid var(--line);
  border-radius:22px;
  background:linear-gradient(160deg,rgba(27,39,67,.92),rgba(22,33,58,.7));
  padding:28px 26px;
  transition:.35s cubic-bezier(.2,.7,.3,1);
  position:relative;overflow:hidden;
}
.feat-card::after{
  content:"";position:absolute;top:-60px;right:-60px;
  width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.20),transparent 68%);
  opacity:0;transition:.4s;
}
.feat-card:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.4);box-shadow:0 20px 46px -26px rgba(34,211,238,.5)}
.feat-card:hover::after{opacity:1}
.feat-icon{
  width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;
  font-size:1.15rem;
  margin-bottom:20px;
  background:rgba(34,211,238,.12);color:var(--main);
  border:1px solid rgba(34,211,238,.28);
  position:relative;z-index:1;
}
.feat-card:nth-child(even) .feat-icon{background:rgba(251,146,60,.13);color:var(--accent);border-color:rgba(251,146,60,.3)}
.feat-card h3{font-size:1.09rem;font-weight:700;color:#fff;margin:0 0 10px;position:relative;z-index:1}
.feat-card p{margin:0;color:var(--muted);font-size:.9rem;position:relative;z-index:1}
.feat-list{list-style:none;padding:0;margin:14px 0 0;position:relative;z-index:1}
.feat-list li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:.86rem;color:#b6c4d8;margin-bottom:7px;
}
.feat-list li i{color:var(--main);margin-top:5px;font-size:.7rem}
.feat-card:nth-child(even) .feat-list li i{color:var(--accent)}

/* 瀑布流卡片 */
.waterfall{
  columns:3 300px;
  column-gap:20px;
}
.wf-card{
  break-inside:avoid;
  margin-bottom:20px;
  border:1px solid var(--line);
  border-radius:20px;
  background:rgba(22,33,58,.78);
  overflow:hidden;
  transition:.35s ease;
  display:inline-block;width:100%;
}
.wf-card:hover{border-color:rgba(34,211,238,.38);transform:translateY(-4px);box-shadow:0 22px 50px -30px rgba(34,211,238,.55)}
.wf-thumb{position:relative;overflow:hidden}
.wf-thumb img{width:100%;transition:transform .6s cubic-bezier(.2,.7,.3,1);aspect-ratio:16/10;object-fit:cover}
.wf-card:hover .wf-thumb img{transform:scale(1.08)}
.wf-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 34%,rgba(9,14,26,.9));
  opacity:0;transition:.4s ease;
  display:flex;align-items:flex-end;padding:16px;
  font-size:.82rem;color:#dbe6f5;
}
.wf-card:hover .wf-mask{opacity:1}
.wf-body{padding:18px 20px 20px}
.wf-tag{
  display:inline-block;
  font-size:.68rem;font-weight:700;letter-spacing:.08em;
  border-radius:999px;padding:3px 11px;margin-bottom:11px;
  color:var(--main);border:1px solid rgba(34,211,238,.34);background:rgba(34,211,238,.08);
}
.wf-card:nth-child(3n+2) .wf-tag{color:var(--accent);border-color:rgba(251,146,60,.34);background:rgba(251,146,60,.08)}
.wf-body h3{font-size:1rem;font-weight:700;color:#fff;margin:0 0 9px;line-height:1.45}
.wf-body p{margin:0 0 14px;font-size:.87rem;color:var(--muted)}
.wf-meta{display:flex;align-items:center;gap:14px;font-size:.76rem;color:#7f8fa8}
.wf-meta i{color:var(--main)}

/* 长文 */
.article{max-width:830px}
.article h2{
  font-size:clamp(1.7rem,3.4vw,2.3rem);
  font-weight:800;color:#fff;margin:0 0 24px;letter-spacing:-.015em;line-height:1.24;
}
.article h3{font-size:1.16rem;font-weight:700;color:var(--accent);margin:38px 0 13px}
.article p{color:#b6c4d8;font-size:.97rem;margin:0 0 18px}
.article strong{color:#fff;font-weight:600}
.quote{
  border-left:3px solid var(--main);
  background:rgba(34,211,238,.07);
  border-radius:0 18px 18px 0;
  padding:20px 24px;margin:28px 0;
  color:#cfdcee;font-size:.95rem;
}
.quote i{color:var(--main);margin-right:8px}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:880px}
.faq-item{
  border:1px solid var(--line);
  border-radius:20px;
  background:rgba(22,33,58,.62);
  padding:22px 26px;
  transition:.3s;
}
.faq-item:hover{border-color:rgba(251,146,60,.36);background:rgba(27,39,67,.82)}
.faq-item h3{
  font-size:1rem;font-weight:700;color:#fff;margin:0 0 10px;
  display:flex;gap:11px;align-items:flex-start;
}
.faq-item h3 i{color:var(--accent);margin-top:5px;font-size:.85rem}
.faq-item p{margin:0;color:var(--muted);font-size:.91rem;padding-left:26px}

/* CTA */
.cta-box{
  border-radius:28px;
  padding:clamp(34px,6vw,62px);
  text-align:center;
  background:linear-gradient(140deg,rgba(34,211,238,.16),rgba(251,146,60,.14));
  border:1px solid rgba(34,211,238,.28);
  position:relative;overflow:hidden;
}
.cta-box::before{
  content:"";position:absolute;top:-110px;left:50%;transform:translateX(-50%);
  width:420px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.28),transparent 70%);
  filter:blur(18px);
}
.cta-box h2{
  font-size:clamp(1.7rem,4vw,2.6rem);font-weight:900;color:#fff;
  margin:0 0 16px;position:relative;letter-spacing:-.02em;
}
.cta-box p{color:#c3d1e4;max-width:600px;margin:0 auto 30px;position:relative}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative}

/* 友链 & 页脚 */
.friend-links{
  border-top:1px solid var(--line);
  padding:44px 0 34px;
}
.friend-links h4{
  font-size:.78rem;font-weight:700;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;margin:0 0 16px;
}
.friend-links .fl-box{
  border:1px dashed rgba(226,232,240,.16);
  border-radius:18px;
  padding:20px 22px;
  color:#9fb0c7;font-size:.88rem;
  background:rgba(22,33,58,.42);
}
footer{
  border-top:1px solid var(--line);
  padding:40px 0 54px;
  display:flex;flex-wrap:wrap;gap:24px;
  justify-content:space-between;align-items:flex-start;
}
.foot-brand{font-size:1.05rem;font-weight:800;color:#fff;display:flex;align-items:center;gap:9px}
.foot-brand i{color:var(--main)}
.foot-desc{color:var(--muted);font-size:.85rem;max-width:380px;margin:10px 0 0}
.foot-nav{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:.87rem}
.foot-nav a{color:#a9b8cd;transition:.25s}
.foot-nav a:hover{color:var(--main)}
.copy{width:100%;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);color:#6f7f96;font-size:.8rem}

/* 回到顶部 */
#toTop{
  position:fixed;right:24px;bottom:26px;z-index:1035;
  width:48px;height:48px;border-radius:50%;
  border:none;background:var(--main);color:#06222a;
  display:grid;place-items:center;font-size:1rem;
  box-shadow:0 14px 32px -12px rgba(34,211,238,.75);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.35s ease;cursor:pointer;
}
#toTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#toTop:hover{background:#5ceaff;transform:translateY(-3px)}

/* 滚动渐显 */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

@media (max-width:991px){
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .page{margin-left:0}
  .waterfall{columns:2 260px}
}
@media (max-width:640px){
  section{padding:52px 0}
  .hero{padding:44px 0 34px}
  .waterfall{columns:1}
  .hero-stats{gap:22px}
  .hero-stats div b{font-size:1.5rem}
  .acc-body-inner{padding-left:24px}
  .faq-item{padding:18px 18px}
  .faq-item p{padding-left:0}
  footer{padding-bottom:70px}
}

/* --- 子页面追加 --- */
.guide-step {background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 22px 20px;height:100%;position:relative;transition:.25s;}
.guide-step:hover {border-color:rgba(34,211,238,.45);transform:translateY(-3px);background:var(--card-2);}
.guide-step .num {font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--main);display:block;margin-bottom:10px;}
.guide-step h3 {font-size:18px;font-weight:700;color:var(--text);margin:0 0 10px;}
.guide-step p {color:var(--muted);font-size:14.5px;line-height:1.75;margin:0;}
.guide-step i.ico {position:absolute;top:20px;right:20px;font-size:20px;color:rgba(34,211,238,.35);}
.tip-box {background:linear-gradient(135deg,rgba(34,211,238,.10),rgba(251,146,60,.08));border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:12px;padding:16px 20px;color:var(--text);font-size:14.5px;line-height:1.8;}
.tip-box b {color:var(--accent);}
.feature-row {display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-bottom:1px dashed var(--line);}
.feature-row:last-child {border-bottom:none;}
.feature-row .ficon {flex:0 0 44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(34,211,238,.12);color:var(--main);font-size:18px;}
.feature-row h3 {font-size:16.5px;font-weight:700;color:var(--text);margin:0 0 6px;}
.feature-row p {font-size:14.5px;color:var(--muted);line-height:1.75;margin:0;}
.pick-card {background:var(--card-2);border:1px solid var(--line);border-radius:14px;padding:18px;height:100%;}
.pick-card .ptag {display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;background:rgba(251,146,60,.15);color:var(--accent);margin-bottom:10px;}
.pick-card h3 {font-size:16px;font-weight:700;color:var(--text);margin:0 0 8px;}
.pick-card p {font-size:14px;color:var(--muted);line-height:1.7;margin:0;}
.faq-list .acc-item {margin-bottom:12px;}
.guide-hero-tags {margin-top:18px;}

/* --- 子页面追加 --- */
.about-hero {padding:52px 0 18px}
.about-hero h1 {font-size:clamp(1.8rem,4vw,2.7rem);font-weight:800;line-height:1.25;margin:0 0 14px}
.about-hero h1 span {color:var(--main)}
.about-lead {color:var(--muted);font-size:1.02rem;line-height:1.85;max-width:760px}
.about-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:8px}
.about-card {background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 22px 20px;transition:.25s}
.about-card:hover {background:var(--card-2);transform:translateY(-3px)}
.about-card .ico {width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(34,211,238,.12);color:var(--main);font-size:1.15rem;margin-bottom:14px}
.about-card.accent .ico {background:rgba(251,146,60,.14);color:var(--accent)}
.about-card h3 {font-size:1.08rem;font-weight:700;margin:0 0 10px;color:var(--text)}
.about-card p {margin:0;color:var(--muted);font-size:.93rem;line-height:1.8}
.about-block {background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px 24px 22px;margin-bottom:18px}
.about-block h2 {font-size:1.24rem;font-weight:800;margin:0 0 14px;color:var(--text);display:flex;align-items:center;gap:10px}
.about-block h2 i {color:var(--main);font-size:1rem}
.about-block p {color:var(--muted);line-height:1.9;font-size:.95rem;margin:0 0 12px}
.about-block p:last-child {margin-bottom:0}
.about-list {list-style:none;padding:0;margin:6px 0 0}
.about-list li {position:relative;padding-left:26px;color:var(--muted);line-height:1.85;font-size:.94rem;margin-bottom:10px}
.about-list li i {position:absolute;left:0;top:5px;color:var(--accent);font-size:.82rem}
.timeline {position:relative;margin-top:6px;padding-left:24px}
.timeline::before {content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item {position:relative;margin-bottom:20px}
.tl-item:last-child {margin-bottom:0}
.tl-item::before {content:"";position:absolute;left:-24px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--main)}
.tl-item h4 {margin:0 0 6px;font-size:1rem;font-weight:700;color:var(--text)}
.tl-item span {display:inline-block;font-size:.78rem;color:var(--main);font-weight:600;letter-spacing:.4px;margin-bottom:6px}
.tl-item p {margin:0;color:var(--muted);font-size:.92rem;line-height:1.8}
.num-row {display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-top:4px}
.num-box {background:var(--card-2);border:1px solid var(--line);border-radius:14px;padding:18px 16px;text-align:center}
.num-box b {display:block;font-size:1.6rem;font-weight:800;color:var(--main);line-height:1.2}
.num-box span {display:block;margin-top:6px;color:var(--muted);font-size:.84rem}
.about-hero {padding:36px 0 12px}
.about-block {padding:20px 18px}

/* --- 子页面追加 --- */
.rank-wrap {display:grid;grid-template-columns:1fr;gap:22px}
.rank-card {
    background:linear-gradient(180deg,var(--card) 0%,var(--card-2) 100%);
    border:1px solid var(--line);border-radius:18px;padding:18px 18px 8px;
  }
.rank-card h3 {
    font-size:16px;font-weight:800;margin:0 0 4px;letter-spacing:.2px;
    display:flex;align-items:center;gap:9px;color:var(--text);
  }
.rank-card h3 i {color:var(--main)}
.rank-sub {color:var(--muted);font-size:12.5px;margin:0 0 14px;line-height:1.6}
.rank-list {list-style:none;padding:0;margin:0}
.rank-item {
    display:flex;align-items:center;gap:14px;padding:12px 4px;
    border-top:1px solid var(--line);
  }
.rank-item:first-child {border-top:none}
.rank-no {
    flex:0 0 34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:14px;font-variant-numeric:tabular-nums;
    background:rgba(34,211,238,.10);color:var(--main);border:1px solid rgba(34,211,238,.22);
  }
.rank-no.top1 {background:linear-gradient(135deg,#fb923c,#f97316);color:#1b1206;border-color:transparent}
.rank-no.top2 {background:linear-gradient(135deg,#22d3ee,#0ea5b7);color:#04222a;border-color:transparent}
.rank-no.top3 {background:linear-gradient(135deg,#a78bfa,#7c5cf5);color:#150a2e;border-color:transparent}
.rank-body {flex:1 1 auto;min-width:0}
.rank-title {font-weight:700;font-size:14.5px;color:var(--text);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.rank-meta {color:var(--muted);font-size:12px;margin-top:4px;display:flex;gap:12px;flex-wrap:wrap}
.rank-meta span {display:inline-flex;align-items:center;gap:5px}
.rank-tag {
    font-size:11px;padding:2px 8px;border-radius:999px;font-weight:600;
    background:rgba(251,146,60,.14);color:var(--accent);border:1px solid rgba(251,146,60,.28);
  }
.rank-tag.blue {background:rgba(34,211,238,.13);color:var(--main);border-color:rgba(34,211,238,.28)}
.rank-score {
    flex:0 0 auto;text-align:right;font-weight:800;font-size:16px;color:var(--main);
    font-variant-numeric:tabular-nums;line-height:1.15;
  }
.rank-score small {display:block;font-weight:500;font-size:11px;color:var(--muted)}
.bar {height:6px;border-radius:999px;background:rgba(226,232,240,.08);overflow:hidden;margin-top:9px}
.bar > i {display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--main),#7c5cf5)}
.rank-note {
    background:var(--card);border:1px solid var(--line);border-left:3px solid var(--main);
    border-radius:12px;padding:14px 16px;color:var(--muted);font-size:13px;line-height:1.85;
  }
.rank-note b {color:var(--text)}
.mini-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.mini {
    background:var(--card);border:1px solid var(--line);border-radius:14px;padding:15px 16px;
  }
.mini h4 {font-size:14px;font-weight:700;margin:0 0 8px;color:var(--text);display:flex;align-items:center;gap:8px}
.mini h4 i {color:var(--accent)}
.mini p {margin:0;color:var(--muted);font-size:12.8px;line-height:1.8}
.mini .num {font-size:22px;font-weight:800;color:var(--main);font-variant-numeric:tabular-nums}
.rank-wrap {grid-template-columns:1fr 1fr;gap:22px}
.rank-wrap .span2 {grid-column:1 / -1}

/* --- 子页面追加 --- */
.terms-wrap {max-width:860px;}
.terms-toc {background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;}
.terms-toc .side-label {margin-bottom:12px;}
.terms-toc ol {margin:0;padding-left:18px;}
.terms-toc li {margin:6px 0;}
.terms-toc a {color:var(--muted);font-size:14px;text-decoration:none;transition:.2s;}
.terms-toc a:hover {color:var(--main);}
.terms-sec {background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px 26px 22px;margin-bottom:22px;}
.terms-sec h2 {font-size:20px;font-weight:700;color:var(--text);margin:0 0 14px;display:flex;align-items:center;gap:10px;}
.terms-sec h2 i {color:var(--main);font-size:16px;}
.terms-sec h3 {font-size:16px;font-weight:600;color:var(--text);margin:20px 0 8px;}
.terms-sec p,.terms-sec li {color:var(--muted);font-size:14.5px;line-height:1.85;}
.terms-sec ul {padding-left:20px;}
.terms-sec strong {color:var(--text);font-weight:600;}
.terms-meta {display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.terms-meta span {font-size:12.5px;color:var(--muted);background:var(--card-2);border:1px solid var(--line);border-radius:999px;padding:5px 12px;}
.terms-meta span i {color:var(--accent);margin-right:5px;}
.terms-note {background:var(--card-2);border-left:3px solid var(--accent);border-radius:10px;padding:14px 16px;margin:16px 0;}
.terms-note p {margin:0;font-size:14px;}
.terms-sec {padding:20px 16px;}
.terms-sec h2 {font-size:18px;}

/* --- 子页面追加 --- */
.doc-hero { padding: 26px 0 6px; }
.doc-hero h1 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 800; letter-spacing: -.02em; margin: 0 0 12px; }
.doc-hero h1 .brand-inline { color: var(--main); }
.doc-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: .88rem; margin-bottom: 4px; }
.doc-meta span i { color: var(--accent); margin-right: 6px; }
.doc-wrap { max-width: 880px; }
.toc { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 26px 0 34px; }
.toc h3 { font-size: 1rem; font-weight: 700; margin: 0 0 12px; color: var(--main); }
.toc ol { margin: 0; padding-left: 20px; columns: 2; column-gap: 28px; }
.toc li { margin: 5px 0; font-size: .92rem; }
.toc a { color: var(--text); text-decoration: none; opacity: .85; }
.toc a:hover { color: var(--main); opacity: 1; }
.doc-sec { margin-bottom: 38px; scroll-margin-top: 90px; }
.doc-sec h2 { font-size: 1.28rem; font-weight: 700; margin: 0 0 14px; padding-left: 14px; border-left: 3px solid var(--main); line-height: 1.4; }
.doc-sec h3 { font-size: 1.02rem; font-weight: 600; margin: 20px 0 8px; color: var(--main); }
.doc-sec p, .doc-sec li { color: var(--text); opacity: .88; line-height: 1.85; font-size: .95rem; }
.doc-sec ul, .doc-sec ol { padding-left: 22px; }
.doc-sec ul li, .doc-sec ol li { margin: 6px 0; }
.doc-sec strong { color: var(--text); opacity: 1; font-weight: 600; }
.note-box { background: var(--card-2); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 12px; padding: 14px 18px; margin: 16px 0; }
.note-box p { margin: 0; font-size: .92rem; }
.data-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: .9rem; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; vertical-align: top; }
.data-table th { background: var(--card-2); color: var(--main); font-weight: 600; }
.data-table td { color: var(--text); opacity: .88; }
.doc-foot { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; margin-top: 12px; }
.doc-foot p { margin: 0 0 8px; color: var(--muted); font-size: .9rem; }
.doc-foot p:last-child { margin-bottom: 0; }
.back-top { color: var(--main); text-decoration: none; font-size: .85rem; }
.back-top:hover { color: var(--accent); }
.toc ol { columns: 1; }