:root{
  --brand:#64748b;
  --accent:#94a3b8;
  --bg:#f1f5f9;
  --text:#1e293b;
  --card:#ffffff;
  --line:#e2e8f0;
  --radius-card:16px;
  --radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(100,116,139,.08);
  --shadow-md:0 10px 26px rgba(100,116,139,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:14px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.hand{
  font-family:'Segoe UI Rounded','Quicksand','PingFang SC','Hiragino Sans GB',sans-serif;
  font-weight:800;
  letter-spacing:.2px;
}
a{text-decoration:none;color:var(--brand);}
a:hover{color:var(--text);}

/* 阅读进度条 */
#readbar{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  z-index:2000;transition:width .08s linear;
}

/* 导航 */
.topnav{
  position:sticky;top:0;z-index:1500;
  background:rgba(241,245,249,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topnav .inner{
  max-width:1180px;margin:0 auto;padding:10px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.brand{
  font-size:19px;font-weight:900;color:var(--text);
  display:flex;align-items:center;gap:8px;white-space:nowrap;
}
.brand i{color:var(--brand);}
.brand:hover{color:var(--brand);}
.navlinks{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.navlinks a{
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;color:var(--text);
  transition:.2s;
}
.navlinks a:hover{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm);}
.nav-toggle{
  display:none;border:1px solid var(--line);background:#fff;
  border-radius:12px;padding:5px 11px;color:var(--brand);font-size:16px;
}
@media(max-width:860px){
  .nav-toggle{display:inline-block;}
  .navlinks{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:10px 16px;flex-direction:column;align-items:stretch;gap:2px;
  }
  .navlinks.open{display:flex;}
  .navlinks a{padding:9px 12px;}
}

/* 通用容器 */
.wrap{max-width:1180px;margin:0 auto;padding:0 16px;}
section{padding:44px 0;}
.sec-head{margin-bottom:22px;}
.sec-tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:1.4px;
  text-transform:uppercase;color:var(--brand);background:#e2e8f0;
  padding:3px 12px;border-radius:var(--radius-pill);margin-bottom:8px;
}
.sec-head h2{font-size:22px;margin:0 0 6px;}
.sec-head p{margin:0;color:#64748b;font-size:13px;}

/* 时间线 */
.timeline{
  position:relative;margin-top:6px;
  padding-left:26px;
  border-left:2px dashed var(--accent);
}
.tl-item{position:relative;margin-bottom:24px;}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:5px;
  width:12px;height:12px;border-radius:50%;
  background:var(--brand);border:3px solid var(--bg);
  box-shadow:0 0 0 1px var(--accent);
}
.tl-item h3{font-size:15px;margin:0 0 5px;}
.tl-item p{margin:0;font-size:13px;color:#475569;}

/* Hero */
.hero{
  background:#fff;border-bottom:1px solid var(--line);
  padding:52px 0 42px;
}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:34px;align-items:center;}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:26px;}}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:#e2e8f0;color:var(--brand);font-size:12px;font-weight:700;
  padding:4px 13px;border-radius:var(--radius-pill);margin-bottom:14px;
}
.type-title{
  font-size:clamp(24px,4.4vw,40px);line-height:1.28;margin:0 0 14px;
  min-height:2.6em;
}
.type-title .cur{
  display:inline-block;width:3px;height:.95em;background:var(--brand);
  margin-left:3px;vertical-align:-2px;animation:blink .9s steps(1) infinite;
}
@keyframes blink{50%{opacity:0;}}
.hero p.lead-txt{font-size:14px;color:#475569;margin:0 0 20px;max-width:600px;}
.btn-pill{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:var(--radius-pill);padding:10px 24px;
  font-size:13px;font-weight:700;border:1px solid var(--brand);
  background:var(--brand);color:#fff;transition:.22s;
}
.btn-pill:hover{background:var(--text);border-color:var(--text);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-pill.ghost{background:#fff;color:var(--brand);}
.btn-pill.ghost:hover{background:var(--brand);color:#fff;}
.hero-stats{display:flex;flex-wrap:wrap;gap:26px;margin-top:26px;}
.hero-stats .st b{display:block;font-size:20px;color:var(--brand);line-height:1.2;}
.hero-stats .st span{font-size:12px;color:#64748b;}

/* Hero 右侧卡片 */
.hero-aside{
  background:var(--bg);border:1px solid var(--line);border-radius:22px;
  padding:18px;
}
.hot-row{
  display:flex;align-items:center;gap:12px;
  background:#fff;border-radius:var(--radius-card);
  padding:9px 13px;margin-bottom:9px;box-shadow:var(--shadow-sm);
  transition:.2s;
}
.hot-row:last-child{margin-bottom:0;}
.hot-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.hot-row .rk{
  width:24px;height:24px;flex:0 0 24px;border-radius:8px;
  background:var(--brand);color:#fff;font-size:12px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.hot-row .nm{font-size:13px;font-weight:600;flex:1;color:var(--text);}
.hot-row .tp{font-size:11px;color:#94a3b8;}

/* 手风琴说明 */
.acc-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:10px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.acc-head{
  width:100%;text-align:left;border:0;background:transparent;
  padding:14px 18px;font-size:14px;font-weight:700;color:var(--text);
  display:flex;align-items:center;gap:10px;cursor:pointer;
}
.acc-head i.ic{color:var(--brand);}
.acc-head .arw{margin-left:auto;color:var(--accent);transition:.25s;}
.acc-item.open .arw{transform:rotate(180deg);}
.acc-body{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.acc-body .in{padding:0 18px 16px 44px;font-size:13px;color:#475569;}
.acc-body .in ul{margin:0;padding-left:18px;}
.acc-body .in li{margin-bottom:5px;}

/* 特色网格 */
.feat-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
}
@media(max-width:900px){.feat-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.feat-grid{grid-template-columns:1fr;}}
.feat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-sm);transition:.25s;
  opacity:0;transform:translateY(22px);
}
.feat-card.in{opacity:1;transform:translateY(0);transition:opacity .5s ease,transform .5s ease,box-shadow .25s ease;}
.feat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.feat-card .fic{
  width:38px;height:38px;border-radius:12px;background:#e2e8f0;
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:16px;margin-bottom:12px;
}
.feat-card h3{font-size:15px;margin:0 0 8px;}
.feat-card ul{margin:0;padding-left:0;list-style:none;}
.feat-card li{
  font-size:12.5px;color:#475569;padding-left:16px;position:relative;margin-bottom:4px;
}
.feat-card li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);
}

/* 长文 */
.article{
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:28px;box-shadow:var(--shadow-sm);
}
.article h2{font-size:20px;margin:0 0 14px;}
.article h3{font-size:15px;margin:22px 0 8px;color:var(--brand);}
.article p{font-size:13.5px;color:#334155;margin:0 0 12px;}
.article ul{padding-left:20px;font-size:13.5px;color:#334155;}
.article li{margin-bottom:5px;}
.article .quote{
  border-left:3px solid var(--accent);background:var(--bg);
  border-radius:0 12px 12px 0;padding:12px 16px;font-size:13px;color:#475569;
  margin:16px 0;
}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
@media(max-width:820px){.faq-wrap{grid-template-columns:1fr;}}
.faq-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px 18px;box-shadow:var(--shadow-sm);
  opacity:0;transform:translateY(20px);
}
.faq-card.in{opacity:1;transform:translateY(0);transition:opacity .5s ease,transform .5s ease;}
.faq-card h3{font-size:13.5px;margin:0 0 7px;display:flex;gap:9px;}
.faq-card h3 i{color:var(--brand);margin-top:3px;}
.faq-card p{margin:0;font-size:12.5px;color:#475569;}

/* CTA */
.cta{
  background:var(--brand);color:#fff;border-radius:24px;
  padding:36px 28px;text-align:center;
}
.cta h2{font-size:22px;margin:0 0 10px;color:#fff;}
.cta p{margin:0 0 20px;font-size:13.5px;color:#dbe4ef;}
.cta .btn-pill{background:#fff;color:var(--brand);border-color:#fff;}
.cta .btn-pill:hover{background:var(--text);border-color:var(--text);color:#fff;}

/* 友链 */
.friend{
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:26px 0;
}
.friend h3{font-size:14px;margin:0 0 10px;color:var(--text);}
.friend .links{font-size:12.5px;color:#64748b;line-height:2;}

/* 页脚 */
footer{background:var(--bg);padding:30px 0;border-top:1px solid var(--line);}
.foot-grid{display:flex;flex-wrap:wrap;gap:22px;justify-content:space-between;align-items:flex-start;}
.foot-brand{font-size:17px;font-weight:900;color:var(--text);display:flex;align-items:center;gap:8px;}
.foot-brand i{color:var(--brand);}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:12.5px;}
.foot-links a{color:#64748b;}
.foot-links a:hover{color:var(--brand);}
.copy{font-size:12px;color:#94a3b8;margin-top:14px;width:100%;}

/* --- 子页面追加 --- */
/* 本页专属少量样式，复用站点变量与类名 */
  .rank-hero { padding: 64px 0 24px; }
.rank-hero h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -.5px; color: var(--text); margin-bottom: 14px; }
.rank-hero p { color: var(--brand); font-size: 1.02rem; max-width: 720px; line-height: 1.85; }
.rank-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 8px; }
.rank-tab {
    border: 1px solid var(--line); background: var(--card); color: var(--brand);
    padding: 8px 20px; border-radius: var(--radius-pill); font-weight: 600; font-size: .92rem;
    cursor: pointer; transition: .2s; box-shadow: var(--shadow-sm);
  }
.rank-tab:hover { color: var(--text); border-color: var(--accent); }
.rank-tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.rank-list { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; }
.rank-item {
    display: flex; gap: 18px; align-items: flex-start;
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card);
    padding: 18px 20px; box-shadow: var(--shadow-sm); transition: .25s;
  }
.rank-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.rank-no {
    flex: 0 0 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.2rem; background: var(--bg); color: var(--brand);
  }
.rank-item.top1 .rank-no { background: #fef3c7; color: #b45309; }
.rank-item.top2 .rank-no { background: #e2e8f0; color: #475569; }
.rank-item.top3 .rank-no { background: #fde8d7; color: #b45309; }
.rank-body { flex: 1 1 auto; min-width: 0; }
.rank-body h3 { font-size: 1.08rem; font-weight: 700; color: var(--text); margin: 0 0 6px; }
.rank-body .meta { font-size: .84rem; color: var(--accent); margin-bottom: 8px; }
.rank-body .desc { font-size: .92rem; color: var(--brand); line-height: 1.75; margin: 0; }
.rank-stat { flex: 0 0 auto; text-align: right; font-size: .84rem; color: var(--brand); }
.rank-stat b { display: block; font-size: 1.05rem; color: var(--text); }
.tag-mini {
    display: inline-block; font-size: .74rem; padding: 2px 10px; border-radius: var(--radius-pill);
    background: var(--bg); color: var(--brand); margin-right: 6px; margin-top: 6px;
  }
.rank-note { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); padding: 22px 24px; box-shadow: var(--shadow-sm); }
.rank-note h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.rank-note p { color: var(--brand); line-height: 1.85; font-size: .94rem; margin-bottom: 10px; }
.rank-note p:last-child { margin-bottom: 0; }
.rank-item { flex-wrap: wrap; gap: 12px; }
.rank-stat { width: 100%; text-align: left; display: flex; gap: 22px; }

/* --- 子页面追加 --- */
.about-hero {padding:56px 0 24px;}
.about-hero h1 {font-size:clamp(26px,4.4vw,42px);font-weight:900;line-height:1.25;margin:14px 0 14px;letter-spacing:-.5px;}
.about-hero p.lead {color:#475569;font-size:16px;line-height:1.9;max-width:760px;margin:0;}
.about-body {padding:8px 0 64px;}
.about-sec {margin-top:44px;}
.about-sec h2 {font-size:clamp(20px,2.6vw,26px);font-weight:800;color:var(--text);margin:0 0 16px;letter-spacing:-.3px;}
.about-sec h3 {font-size:17px;font-weight:700;color:var(--text);margin:0 0 8px;}
.about-sec p {color:#475569;font-size:15px;line-height:1.95;margin:0 0 12px;}
.about-panel {background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);padding:22px 24px;}
.about-list {list-style:none;padding:0;margin:0;}
.about-list li {position:relative;padding:9px 0 9px 26px;color:#475569;font-size:15px;line-height:1.8;border-bottom:1px dashed var(--line);}
.about-list li:last-child {border-bottom:none;}
.about-list li::before {content:"\f058";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--brand);position:absolute;left:0;top:11px;font-size:13px;}
.about-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;}
.about-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);padding:20px 22px;transition:transform .2s ease,box-shadow .2s ease;}
.about-card:hover {transform:translateY(-3px);box-shadow:var(--shadow-md);}
.about-card .ico {width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:12px;}
.about-card p {font-size:14.5px;color:#475569;line-height:1.85;margin:0;}
.about-stats {display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-top:8px;}
.about-stat {background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 16px;text-align:center;box-shadow:var(--shadow-sm);}
.about-stat b {display:block;font-size:24px;font-weight:900;color:var(--brand);letter-spacing:-.5px;}
.about-stat span {display:block;margin-top:6px;font-size:13px;color:#64748b;}
.about-note {background:linear-gradient(135deg,rgba(100,116,139,.08),rgba(148,163,184,.12));border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px;color:#475569;font-size:14.5px;line-height:1.9;}
.about-hero {padding:36px 0 16px;}
.about-panel {padding:18px 16px;}
.about-sec {margin-top:34px;}

/* --- 子页面追加 --- */
.disc-hero {padding:54px 0 34px;}
.disc-hero h1 {font-size:clamp(26px,4.4vw,42px);font-weight:900;letter-spacing:-.5px;line-height:1.2;margin:14px 0 14px;color:var(--text);}
.disc-hero p.lead {max-width:760px;color:#475569;font-size:16px;line-height:1.85;margin:0;}
.disc-meta {display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.disc-meta span {background:var(--card);border:1px solid var(--line);border-radius:var(--radius-pill);padding:7px 16px;font-size:13px;color:#475569;box-shadow:var(--shadow-sm);}
.disc-layout {display:grid;grid-template-columns:260px 1fr;gap:30px;align-items:start;}
.disc-toc {position:sticky;top:88px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);}
.disc-toc h4 {font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);font-weight:800;margin:0 0 14px;}
.disc-toc a {display:block;padding:8px 10px;border-radius:10px;color:#475569;font-size:14px;text-decoration:none;transition:.2s;border-left:3px solid transparent;}
.disc-toc a:hover {background:var(--bg);color:var(--text);border-left-color:var(--accent);}
.disc-body {background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:34px;box-shadow:var(--shadow-sm);}
.disc-body h2 {font-size:21px;font-weight:800;color:var(--text);margin:0 0 16px;padding-left:14px;border-left:4px solid var(--accent);line-height:1.4;}
.disc-body h2 .num {color:var(--accent);font-weight:900;margin-right:6px;}
.disc-body p {color:#475569;font-size:15px;line-height:1.95;margin:0 0 14px;}
.disc-body ul {margin:0 0 16px;padding-left:4px;list-style:none;}
.disc-body ul li {position:relative;padding-left:24px;color:#475569;font-size:15px;line-height:1.9;margin-bottom:9px;}
.disc-body ul li::before {content:"\f0da";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:1px;color:var(--accent);font-size:12px;}
.disc-block {padding-bottom:30px;margin-bottom:30px;border-bottom:1px dashed var(--line);}
.disc-block:last-child {border-bottom:none;margin-bottom:0;padding-bottom:0;}
.disc-note {background:var(--bg);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:18px 20px;margin:6px 0 4px;}
.disc-note p {margin:0;font-size:14px;color:#475569;}
.disc-table {width:100%;border-collapse:collapse;margin:6px 0 18px;font-size:14px;}
.disc-table th,.disc-table td {border:1px solid var(--line);padding:12px 14px;text-align:left;color:#475569;line-height:1.7;}
.disc-table th {background:var(--bg);color:var(--text);font-weight:800;}
.disc-table tr:nth-child(even) td {background:#fafbfc;}
.disc-cta {margin-top:26px;background:linear-gradient(135deg,rgba(100,116,139,.10),rgba(148,163,184,.14));border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;}
.disc-cta p {margin:0;font-size:15px;color:var(--text);font-weight:600;}
.disc-cta small {display:block;font-weight:400;color:#64748b;margin-top:6px;font-size:13px;}
.disc-layout {grid-template-columns:1fr;}
.disc-toc {position:static;}
.disc-body {padding:24px 20px;}
.disc-table th,.disc-table td {padding:10px;font-size:13px;}

/* --- 子页面追加 --- */
.sitemap-wrap {max-width:1080px;margin:0 auto;padding:0 18px 70px;}
.map-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;}
.map-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 24px 18px;box-shadow:var(--shadow-sm);transition:.25s;}
.map-card:hover {box-shadow:var(--shadow-md);transform:translateY(-3px);}
.map-card h3 {font-size:1.08rem;font-weight:800;color:var(--text);margin:0 0 6px;display:flex;align-items:center;gap:9px;}
.map-card h3 i {color:var(--brand);font-size:.98rem;}
.map-card .map-desc {font-size:.84rem;color:var(--brand);line-height:1.7;margin:0 0 14px;}
.map-list {list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.map-list li a {display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-radius:10px;color:var(--text);text-decoration:none;font-size:.9rem;font-weight:600;transition:.2s;}
.map-list li a:hover {background:var(--bg);color:var(--brand);}
.map-list li a span.tag {font-size:.72rem;font-weight:600;color:var(--brand);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-pill);padding:2px 10px;white-space:nowrap;}
.map-list li a:hover span.tag {background:var(--card);}
.map-note {margin-top:26px;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:14px;padding:18px 22px;box-shadow:var(--shadow-sm);font-size:.88rem;line-height:1.85;color:var(--text);}
.map-note strong {color:var(--brand);}
.map-anchor {scroll-margin-top:90px;}
.upd-time {font-size:.82rem;color:var(--brand);text-align:right;margin-top:6px;}
.sitemap-wrap {padding:0 14px 50px;}
.map-card {padding:20px 18px 14px;}