:root{
  --main:#2563eb;
  --accent:#06b6d4;
  --bg:#f8fafc;
  --text:#0f172a;
  --card:#ffffff;
  --line:#e2e8f0;
  --soft:#64748b;
  --mono:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:14px;
  line-height:1.65;
  background-image:
    linear-gradient(rgba(37,99,235,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(37,99,235,.045) 1px,transparent 1px);
  background-size:26px 26px;
}
h1,h2,h3,h4,h5{font-weight:800;letter-spacing:-.02em;}
.mono{font-family:var(--mono);}
a{text-decoration:none;}

/* 阅读进度条 */
#readProgress{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--main),var(--accent));
  z-index:2000;transition:width .12s linear;
}

/* 顶部导航 */
.topbar{
  position:sticky;top:0;z-index:1500;
  background:rgba(248,250,252,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.brand{font-weight:900;font-size:19px;color:var(--text);display:flex;align-items:center;gap:8px;}
.brand .dot{
  width:26px;height:26px;border-radius:9px;
  background:linear-gradient(135deg,var(--main),var(--accent));
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:13px;
}
.nav-link-c{
  color:#334155;font-weight:600;font-size:13.5px;padding:6px 12px;border-radius:12px;
  transition:.2s;
}
.nav-link-c:hover{color:var(--main);background:rgba(37,99,235,.08);}
.nav-toggle{
  border:1px solid var(--line);background:#fff;border-radius:12px;padding:4px 10px;color:var(--main);
}
.mobile-menu{display:none;}
.mobile-menu.open{display:block;}

/* 布局：左侧固定栏 + 右侧内容 */
.layout{
  display:grid;
  grid-template-columns:238px 1fr;
  gap:26px;
  max-width:1320px;
  margin:0 auto;
  padding:26px 18px 10px;
}
.sidebar{position:sticky;top:74px;align-self:start;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:16px;box-shadow:0 18px 40px -28px rgba(15,23,42,.35);
  margin-bottom:16px;
}
.side-title{font-size:12px;font-weight:800;color:var(--soft);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;}
.side-links a{
  display:flex;align-items:center;gap:8px;
  padding:7px 10px;border-radius:12px;color:#334155;font-size:13px;font-weight:600;
  transition:.18s;
}
.side-links a:hover{background:rgba(37,99,235,.08);color:var(--main);transform:translateX(3px);}
.side-links a i{width:16px;color:var(--accent);font-size:12px;}
.side-stat{display:flex;justify-content:space-between;font-size:12.5px;padding:5px 2px;color:var(--soft);}
.side-stat b{color:var(--text);font-family:var(--mono);font-size:13px;}

/* Hero */
.hero{
  position:relative;border-radius:24px;overflow:hidden;
  min-height:340px;display:flex;align-items:flex-end;
  background:#0f172a;
  box-shadow:0 30px 60px -34px rgba(37,99,235,.55);
}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(15,23,42,.88),rgba(37,99,235,.42));}
.hero-body{position:relative;z-index:2;padding:34px 30px;color:#fff;}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700;margin-bottom:14px;
}
.hero h1{font-size:clamp(24px,3.6vw,38px);font-weight:900;margin:0 0 10px;line-height:1.22;}
.hero p{max-width:640px;font-size:13.5px;color:#dbeafe;margin:0;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px;}
.hero-metrics span{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  border-radius:14px;padding:7px 13px;font-size:12.5px;font-weight:600;
}
.hero-metrics b{font-family:var(--mono);color:#67e8f9;}

/* 区块通用 */
.section{margin-top:34px;}
.sec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap;}
.sec-head h2{font-size:20px;margin:0;display:flex;align-items:center;gap:9px;}
.sec-head h2 i{color:var(--main);font-size:16px;}
.sec-sub{font-size:12.5px;color:var(--soft);}
.block{
  background:var(--card);border:1px solid var(--line);border-radius:22px;
  padding:22px;box-shadow:0 22px 48px -34px rgba(15,23,42,.4);
}

/* 使用说明 编号清单 */
.steps{counter-reset:step;list-style:none;padding:0;margin:0;}
.steps li{
  counter-increment:step;position:relative;
  padding:12px 14px 12px 52px;border-radius:16px;
  background:#f8fafc;border:1px solid var(--line);margin-bottom:10px;font-size:13.5px;
}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:14px;top:12px;
  font-family:var(--mono);font-weight:700;font-size:13px;color:#fff;
  background:linear-gradient(135deg,var(--main),var(--accent));
  width:26px;height:26px;border-radius:10px;display:flex;align-items:center;justify-content:center;
}
.steps li b{display:block;margin-bottom:2px;}

/* 特色对比表格 */
.table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);}
table.cmp{width:100%;border-collapse:collapse;font-size:13px;background:#fff;min-width:560px;}
table.cmp th,table.cmp td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
table.cmp thead th{background:linear-gradient(135deg,rgba(37,99,235,.1),rgba(6,182,212,.1));font-weight:800;font-size:12.5px;color:var(--text);}
table.cmp tbody tr:hover{background:rgba(37,99,235,.05);}
table.cmp td:first-child{font-weight:700;}
.pill{display:inline-block;border-radius:999px;padding:2px 9px;font-size:11.5px;font-weight:700;font-family:var(--mono);}
.pill-a{background:rgba(37,99,235,.12);color:var(--main);}
.pill-b{background:rgba(6,182,212,.14);color:#0e7490;}

/* 海报网格 */
.poster-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;}
.poster{
  background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;
  box-shadow:0 18px 34px -28px rgba(15,23,42,.5);
  transition:transform .25s ease,box-shadow .25s ease;
}
.poster:hover{transform:translateY(-5px);box-shadow:0 26px 46px -26px rgba(37,99,235,.55);}
.poster-thumb{position:relative;width:100%;aspect-ratio:2/3;overflow:hidden;background:#0f172a;}
.poster-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease;}
.poster:hover .poster-thumb img{transform:scale(1.06);}
.play-btn{
  position:absolute;inset:0;margin:auto;
  width:46px;height:46px;border-radius:50%;
  background:rgba(37,99,235,.92);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  opacity:0;transform:scale(.6);transition:.28s ease;
  box-shadow:0 10px 24px -8px rgba(6,182,212,.9);
}
.poster:hover .play-btn{opacity:1;transform:scale(1);}
.poster-tag{
  position:absolute;top:8px;left:8px;
  background:rgba(15,23,42,.72);color:#e0f2fe;border-radius:9px;
  font-size:10.5px;padding:2px 7px;font-weight:600;backdrop-filter:blur(4px);
}
.poster-body{padding:9px 11px 12px;}
.poster-body h3{font-size:12.8px;margin:0 0 3px;line-height:1.35;font-weight:700;}
.poster-body p{margin:0;font-size:11.5px;color:var(--soft);}
.poster-meta{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:11px;color:var(--soft);}
.poster-meta .score{font-family:var(--mono);font-weight:700;color:var(--main);}

/* 长文 */
.article h3{font-size:16px;margin:20px 0 8px;}
.article h3:first-child{margin-top:0;}
.article p{font-size:13.5px;color:#334155;margin-bottom:11px;}
.article .quote{
  border-left:3px solid var(--accent);background:#f8fafc;
  padding:12px 16px;border-radius:0 16px 16px 0;font-size:13px;color:#475569;margin:14px 0;
}

/* FAQ */
.faq-item{
  border:1px solid var(--line);border-radius:18px;background:#fff;
  margin-bottom:10px;overflow:hidden;
}
.faq-q{
  width:100%;text-align:left;background:none;border:0;
  padding:14px 16px;font-size:13.5px;font-weight:700;color:var(--text);
  display:flex;justify-content:space-between;align-items:center;gap:10px;cursor:pointer;
}
.faq-q i{color:var(--main);transition:transform .25s;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 16px;}
.faq-item.open .faq-a{max-height:340px;padding-bottom:14px;}
.faq-a p{font-size:13px;color:#475569;margin:0;}

/* CTA */
.cta{
  border-radius:24px;padding:30px;
  background:linear-gradient(120deg,var(--main),var(--accent));
  color:#fff;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  box-shadow:0 30px 60px -34px rgba(37,99,235,.8);
}
.cta h2{font-size:22px;margin:0 0 6px;color:#fff;}
.cta p{margin:0;font-size:13px;color:#e0f2fe;max-width:520px;}
.cta-btn{
  background:#fff;color:var(--main);font-weight:800;font-size:13.5px;
  border-radius:16px;padding:12px 22px;display:inline-block;transition:.2s;
}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(0,0,0,.4);color:var(--main);}

/* 友链 & 页脚 */
.friend-links{
  margin-top:34px;background:var(--card);border:1px solid var(--line);
  border-radius:22px;padding:20px;
}
.friend-links h2{font-size:16px;margin:0 0 8px;}
.fl-box{font-size:13px;color:var(--soft);background:#f8fafc;border:1px dashed var(--line);border-radius:14px;padding:12px 14px;}
footer{
  margin-top:26px;border-top:1px solid var(--line);background:#fff;
  padding:26px 18px;font-size:12.8px;color:var(--soft);
}
.footer-inner{max-width:1320px;margin:0 auto;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.footer-inner a{color:var(--main);font-weight:600;}
.footer-nav a{margin-right:14px;color:#475569;font-weight:600;}
.footer-nav a:hover{color:var(--main);}

/* 进场动效 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

@media(max-width:1200px){
  .poster-grid{grid-template-columns:repeat(4,1fr);}
}
@media(max-width:991px){
  .layout{grid-template-columns:1fr;padding-top:18px;}
  .sidebar{position:static;}
  .side-card{margin-bottom:12px;}
  .poster-grid{grid-template-columns:repeat(3,1fr);}
}
@media(max-width:640px){
  .poster-grid{grid-template-columns:repeat(2,1fr);gap:11px;}
  .hero-body{padding:24px 18px;}
  .block{padding:16px;border-radius:18px;}
  .cta{padding:22px;border-radius:20px;}
}

/* --- 子页面追加 --- */
.about-hero { padding: 56px 0 20px; }
.about-hero h1 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; line-height: 1.25; margin: 14px 0 16px; }
.about-hero h1 em { font-style: normal; color: var(--main); }
.about-lead { color: var(--soft); font-size: 16px; line-height: 1.9; max-width: 780px; }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.about-card {
    background: var(--card); border: 1px solid var(--line); border-radius: 14px;
    padding: 22px 20px; height: 100%;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  }
.about-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(15,23,42,.08); border-color: var(--accent); }
.about-card .ico {
    width: 42px; height: 42px; border-radius: 11px; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--main), var(--accent)); color: #fff; font-size: 17px; margin-bottom: 14px;
  }
.about-card h3 { font-size: 17px; font-weight: 700; margin: 0 0 8px; color: var(--text); }
.about-card p { color: var(--soft); font-size: 14.5px; line-height: 1.85; margin: 0; }
.about-timeline { border-left: 2px solid var(--line); padding-left: 22px; margin-top: 8px; }
.about-timeline .tl-item { position: relative; padding-bottom: 26px; }
.about-timeline .tl-item:last-child { padding-bottom: 0; }
.about-timeline .tl-item::before {
    content: ''; position: absolute; left: -29px; top: 5px; width: 12px; height: 12px;
    border-radius: 50%; background: var(--main); border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--main);
  }
.about-timeline h4 { font-size: 15.5px; font-weight: 700; margin: 0 0 6px; color: var(--text); }
.about-timeline p { color: var(--soft); font-size: 14.5px; line-height: 1.85; margin: 0; }
.about-list { list-style: none; padding: 0; margin: 0; }
.about-list li { position: relative; padding-left: 24px; color: var(--soft); font-size: 14.5px; line-height: 1.9; margin-bottom: 10px; }
.about-list li::before {
    content: '\f058'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
    color: var(--accent); position: absolute; left: 0; top: 2px; font-size: 13px;
  }
.about-quote {
    background: linear-gradient(135deg, rgba(37,99,235,.06), rgba(6,182,212,.06));
    border: 1px solid var(--line); border-left: 4px solid var(--main);
    border-radius: 12px; padding: 22px 24px; color: var(--text);
    font-size: 15.5px; line-height: 1.9;
  }
.about-hero { padding: 34px 0 12px; }
.about-card { padding: 18px 16px; }

/* --- 子页面追加 --- */
.guide-hero { background: linear-gradient(135deg, rgba(37,99,235,.08), rgba(6,182,212,.06)); border-bottom: 1px solid var(--line); }
.guide-hero h1 { font-weight: 800; letter-spacing: -.02em; }
.toc { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.toc a { font-size: .85rem; padding: .35rem .8rem; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--soft); text-decoration: none; transition: .2s; }
.toc a:hover { color: #fff; background: var(--main); border-color: var(--main); }
.step-num { width: 34px; height: 34px; border-radius: 50%; background: var(--main); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; flex: 0 0 auto; }
.step-row { display: flex; gap: 1rem; align-items: flex-start; padding: 1rem 0; border-bottom: 1px dashed var(--line); }
.step-row:last-child { border-bottom: none; }
.step-row h4 { font-size: 1rem; font-weight: 700; margin: 0 0 .35rem; }
.step-row p { margin: 0; color: var(--soft); font-size: .92rem; line-height: 1.7; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.cmp-table th, .cmp-table td { padding: .85rem 1rem; text-align: left; border-bottom: 1px solid var(--line); }
.cmp-table thead th { background: rgba(37,99,235,.06); color: var(--text); font-weight: 700; white-space: nowrap; }
.cmp-table td { color: var(--soft); }
.cmp-table td:first-child { color: var(--text); font-weight: 600; }
.cmp-table tbody tr:hover { background: rgba(6,182,212,.04); }
.faq-item h4 { font-size: .98rem; font-weight: 700; margin: 0 0 .5rem; display: flex; gap: .6rem; align-items: baseline; }
.faq-item h4 i { color: var(--accent); font-size: .85rem; }
.faq-item p { margin: 0; color: var(--soft); font-size: .9rem; line-height: 1.75; }
.tip-box { border-left: 3px solid var(--accent); background: rgba(6,182,212,.06); padding: .9rem 1.1rem; border-radius: 0 10px 10px 0; color: var(--soft); font-size: .9rem; line-height: 1.75; }
.tip-box strong { color: var(--text); }
.cmp-table th, .cmp-table td { padding: .6rem .5rem; font-size: .82rem; }

/* --- 子页面追加 --- */
.rank-list {list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px;}
.rank-item {display:flex;gap:16px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;transition:.2s;}
.rank-item:hover {border-color:var(--main);box-shadow:0 6px 20px rgba(37,99,235,.08);}
.rank-no {flex:0 0 46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;background:#eff6ff;color:var(--main);font-family:var(--mono);}
.rank-no.gold {background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff;}
.rank-no.silver {background:linear-gradient(135deg,#94a3b8,#64748b);color:#fff;}
.rank-no.bronze {background:linear-gradient(135deg,#d97706,#b45309);color:#fff;}
.rank-body {flex:1;min-width:0;}
.rank-title {font-size:16px;font-weight:700;color:var(--text);margin:0 0 6px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.rank-meta {font-size:13px;color:var(--soft);line-height:1.7;margin:0;}
.rank-score {flex:0 0 auto;text-align:right;}
.rank-score b {display:block;font-size:22px;font-family:var(--mono);color:var(--main);line-height:1.1;}
.rank-score span {font-size:11px;color:var(--soft);}
.mini-bar {height:6px;border-radius:6px;background:#e2e8f0;overflow:hidden;margin-top:10px;}
.mini-bar i {display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--main),var(--accent));}
.tab-row {display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.tab-row a {font-size:14px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--soft);text-decoration:none;transition:.2s;}
.tab-row a:hover,.tab-row a.on {background:var(--main);border-color:var(--main);color:#fff;}
.rank-note {background:linear-gradient(135deg,#eff6ff,#ecfeff);border:1px solid var(--line);border-radius:14px;padding:18px 20px;font-size:14px;color:var(--text);line-height:1.9;}
.rank-note b {color:var(--main);}
.rank-item {flex-wrap:wrap;}
.rank-score {text-align:left;width:100%;}

/* --- 子页面追加 --- */
.disc-hero {padding:64px 0 32px}
.disc-hero h1 {font-size:clamp(1.9rem,4vw,2.8rem);font-weight:800;letter-spacing:-.02em;margin:0 0 14px}
.disc-hero p {color:var(--soft);max-width:760px;font-size:1.05rem;line-height:1.8;margin:0}
.disc-meta {display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.disc-meta span {font-size:.82rem;color:var(--soft);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.disc-block {background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px 30px;margin-bottom:22px}
.disc-block h2 {font-size:1.28rem;font-weight:700;margin:0 0 6px;letter-spacing:-.01em}
.disc-block h2 .disc-idx {color:var(--main);font-family:var(--mono);font-size:.95rem;margin-right:10px}
.disc-block .disc-lead {color:var(--soft);font-size:.92rem;margin:0 0 16px}
.disc-block p {line-height:1.85;color:var(--text);margin:0 0 12px;font-size:.96rem}
.disc-block p:last-child {margin-bottom:0}
.disc-list {list-style:none;padding:0;margin:0}
.disc-list li {position:relative;padding:10px 0 10px 26px;line-height:1.75;font-size:.95rem;border-bottom:1px dashed var(--line)}
.disc-list li:last-child {border-bottom:none}
.disc-list li::before {content:"";position:absolute;left:6px;top:19px;width:8px;height:8px;border-radius:50%;background:var(--accent)}
.disc-tag {display:inline-block;font-family:var(--mono);font-size:.75rem;color:var(--main);background:rgba(37,99,235,.08);border:1px solid rgba(37,99,235,.18);border-radius:6px;padding:2px 8px;margin-right:8px}
.disc-note {background:rgba(6,182,212,.07);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;padding:16px 20px;margin:18px 0 0;font-size:.92rem;line-height:1.8;color:var(--text)}
.disc-contact {display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:18px}
.disc-contact .cc-item {background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.disc-contact .cc-item i {color:var(--main);font-size:1.1rem;margin-bottom:10px;display:block}
.disc-contact .cc-item h4 {margin:0 0 6px;font-size:.98rem;font-weight:700}
.disc-contact .cc-item p {margin:0;font-size:.88rem;color:var(--soft);line-height:1.7}
.disc-block {padding:22px 18px}
.disc-hero {padding:44px 0 24px}

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#0f172a !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#0f172a !important; }