:root{
  --primary:#2563eb;
  --accent:#06b6d4;
  --bg:#f4f8ff;
  --ink:#0f1e3d;
  --line:#e2eaf6;
  --card:#ffffff;
  --muted:#5a6b8c;
  --radius:8px;
  --shadow:0 2px 10px rgba(37,99,235,.07);
  --shadow-hover:0 8px 24px rgba(37,99,235,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{font-weight:800;letter-spacing:-.01em;line-height:1.3}
a{text-decoration:none;color:inherit}
p{color:var(--muted);margin-bottom:0}

/* ===== 导航 ===== */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:rgba(244,248,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:1240px;margin:0 auto;padding:0 20px;display:flex;align-items:center;height:64px;gap:8px}
.brand{
  display:flex;align-items:center;gap:9px;
  font-weight:900;font-size:1.22rem;color:var(--ink);letter-spacing:-.02em;
  margin-right:auto;
}
.brand .brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:grid;place-items:center;color:#fff;font-size:.9rem;
  box-shadow:0 4px 12px rgba(37,99,235,.28);
}
.brand:hover{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-links a{
  display:block;padding:8px 13px;border-radius:var(--radius);
  font-size:.9rem;font-weight:600;color:#3a4d70;transition:.18s;
}
.nav-links a:hover{background:#e8f1ff;color:var(--primary)}
.nav-toggle{
  display:none;background:#e8f1ff;border:none;color:var(--primary);
  width:40px;height:40px;border-radius:var(--radius);font-size:1rem;cursor:pointer;
}
@media(max-width:991px){
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 14px 14px;gap:2px;
    box-shadow:0 12px 24px rgba(15,30,61,.08);
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 12px;font-size:.95rem}
}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#0a1730 0%,#122a52 45%,#0e2145 100%);
  color:#fff;
  padding:0;
}
.hero-bg{
  position:absolute;inset:-10% 0 -10% 0;
  background:
    radial-gradient(circle at 18% 30%,rgba(37,99,235,.55),transparent 55%),
    radial-gradient(circle at 82% 20%,rgba(6,182,212,.42),transparent 52%),
    radial-gradient(circle at 60% 90%,rgba(37,99,235,.3),transparent 60%);
  will-change:transform;
  z-index:0;
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 40%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 10%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;max-width:1240px;margin:0 auto;padding:64px 20px 58px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  padding:6px 14px;border-radius:999px;font-size:.78rem;font-weight:600;
  letter-spacing:.04em;color:#bfe2ff;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(1.9rem,4.4vw,3.1rem);font-weight:900;
  letter-spacing:-.03em;line-height:1.18;margin-bottom:16px;color:#fff;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(96deg,#60a5fa,#22d3ee);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:#a9c3e8;font-size:1.02rem;max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.btn-main{
  background:linear-gradient(120deg,var(--primary),var(--accent));
  color:#fff;font-weight:700;font-size:.94rem;
  padding:12px 26px;border-radius:var(--radius);border:none;
  box-shadow:0 8px 22px rgba(37,99,235,.4);transition:.2s;
}
.btn-main:hover{transform:translateY(-2px);color:#fff;box-shadow:0 12px 28px rgba(37,99,235,.55)}
.btn-ghost{
  background:rgba(255,255,255,.07);color:#dbeafe;font-weight:600;font-size:.94rem;
  padding:12px 24px;border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.2);transition:.2s;
}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
/* 关键词标签云 */
.tag-cloud{
  display:flex;flex-wrap:wrap;gap:9px;max-width:760px;
}
.tag-cloud .tag{
  font-size:.78rem;font-weight:600;color:#cfe3ff;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  padding:6px 13px;border-radius:999px;
  transition:.2s;
}
.tag-cloud .tag:nth-child(3n){font-size:.86rem;color:#fff;background:rgba(6,182,212,.18);border-color:rgba(6,182,212,.4)}
.tag-cloud .tag:nth-child(4n){font-size:.82rem;color:#bae6fd}
.tag-cloud .tag:hover{background:rgba(37,99,235,.4);border-color:#60a5fa;color:#fff;transform:translateY(-2px)}

/* ===== 通用区块 ===== */
.section{max-width:1240px;margin:0 auto;padding:58px 20px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:26px;flex-wrap:wrap;
  border-bottom:1px solid var(--line);padding-bottom:16px;
}
.section-title{font-size:1.5rem;margin:0;display:flex;align-items:center;gap:11px}
.section-title .bar{
  width:5px;height:24px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  display:inline-block;
}
.section-desc{font-size:.86rem;color:var(--muted);margin-top:4px;font-weight:400}
.section-more{
  font-size:.85rem;font-weight:700;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--radius);transition:.2s;
}
.section-more:hover{background:#e8f1ff}

/* ===== 海报卡片 ===== */
.poster-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(168px,1fr));
  gap:20px;
}
.poster-card{
  background:var(--card);border-radius:var(--radius);
  border:1px solid var(--line);
  overflow:hidden;cursor:pointer;
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.poster-card:hover{
  transform:scale(1.028);
  border-color:var(--primary);
  box-shadow:var(--shadow-hover);
  z-index:2;
}
.poster-thumb{
  position:relative;aspect-ratio:2/3;overflow:hidden;background:#dbe6f7;
}
.poster-thumb img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .4s ease;
}
.poster-card:hover .poster-thumb img{transform:scale(1.06)}
.poster-shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,23,48,0) 42%,rgba(10,23,48,.72) 100%);
  pointer-events:none;
}
.play-badge{
  position:absolute;inset:0;display:grid;place-items:center;
  opacity:0;transition:opacity .25s ease;pointer-events:none;
}
.poster-card:hover .play-badge{opacity:1}
.play-badge span{
  width:46px;height:46px;border-radius:50%;
  background:rgba(37,99,235,.92);
  display:grid;place-items:center;color:#fff;font-size:.95rem;
  box-shadow:0 6px 18px rgba(0,0,0,.4);
}
.poster-rating{
  position:absolute;top:9px;right:9px;
  background:rgba(15,30,61,.82);color:#7ee7f5;
  font-size:.74rem;font-weight:800;
  padding:2px 8px;border-radius:999px;
  backdrop-filter:blur(4px);
}
.poster-tag{
  position:absolute;bottom:9px;left:9px;
  font-size:.68rem;font-weight:700;color:#fff;
  background:rgba(37,99,235,.85);
  padding:2px 8px;border-radius:4px;
  letter-spacing:.02em;
}
.poster-body{padding:11px 13px 14px}
.poster-name{
  font-size:.92rem;font-weight:700;color:var(--ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  margin:0 0 4px;
}
.poster-meta{font-size:.74rem;color:var(--muted);font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ===== 周榜 ===== */
.chart-wrap{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:14px;
}
.chart-item{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 16px;cursor:pointer;
  transition:transform .2s,border-color .2s,box-shadow .2s;
}
.chart-item:hover{transform:scale(1.02);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.chart-rank{
  font-size:1.15rem;font-weight:900;width:34px;flex:0 0 34px;text-align:center;
  color:#b7c7e0;font-style:italic;
}
.chart-item:nth-child(1) .chart-rank{color:#f59e0b}
.chart-item:nth-child(2) .chart-rank{color:#94a3b8}
.chart-item:nth-child(3) .chart-rank{color:#d97706}
.chart-mini{width:46px;height:64px;border-radius:6px;overflow:hidden;flex:0 0 46px;background:#dbe6f7}
.chart-mini img{width:100%;height:100%;object-fit:cover;display:block}
.chart-info{min-width:0;flex:1}
.chart-info h4{font-size:.92rem;margin:0 0 2px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chart-info p{font-size:.75rem;margin:0;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chart-score{
  font-size:.86rem;font-weight:800;color:var(--primary);flex:0 0 auto;
}

/* ===== 步骤条 ===== */
.steps{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:0;counter-reset:step;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;
}
.step{
  position:relative;padding:26px 24px 26px 26px;
  border-right:1px solid var(--line);counter-increment:step;
}
.step:last-child{border-right:none}
.step::before{
  content:counter(step,decimal-leading-zero);
  display:inline-block;font-size:.72rem;font-weight:900;
  color:#fff;background:linear-gradient(120deg,var(--primary),var(--accent));
  padding:3px 9px;border-radius:999px;margin-bottom:12px;letter-spacing:.06em;
}
.step h4{font-size:1rem;margin-bottom:7px;font-weight:800}
.step p{font-size:.85rem;line-height:1.8}
@media(max-width:767px){
  .step{border-right:none;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:none}
}

/* ===== 推荐组件 ===== */
.reco-box{
  background:linear-gradient(150deg,#0d1e3e,#14315f);
  border-radius:var(--radius);padding:38px 30px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;gap:26px;justify-content:space-between;
  position:relative;overflow:hidden;
}
.reco-box::after{
  content:'';position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.35),transparent 70%);
}
.reco-left{flex:1 1 320px;position:relative;z-index:2}
.reco-left h3{font-size:1.34rem;margin-bottom:8px;color:#fff}
.reco-left p{color:#a9c3e8;font-size:.9rem}
.reco-result{
  margin-top:16px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:14px 18px;min-height:60px;
  font-size:.92rem;font-weight:600;color:#e0f2fe;
  display:flex;align-items:center;gap:10px;
}
.reco-result i{color:var(--accent)}
.reco-btn{
  position:relative;z-index:2;flex:0 0 auto;
  background:linear-gradient(120deg,var(--accent),var(--primary));
  color:#fff;font-weight:800;font-size:.96rem;
  padding:15px 34px;border:none;border-radius:var(--radius);
  box-shadow:0 10px 26px rgba(6,182,212,.36);cursor:pointer;transition:.2s;
}
.reco-btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(6,182,212,.5)}

/* ===== 科普 ===== */
.genre-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:18px}
.genre-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 24px;transition:.2s;
}
.genre-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.genre-card h4{font-size:1rem;margin-bottom:8px;display:flex;align-items:center;gap:9px;font-weight:800}
.genre-card h4 i{color:var(--primary);font-size:.92rem}
.genre-card p{font-size:.85rem;line-height:1.85}

/* ===== 即将上线 ===== */
.soon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.soon-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px;display:flex;gap:14px;align-items:center;
  cursor:pointer;transition:.2s;
}
.soon-card:hover{border-color:var(--primary);transform:scale(1.02);box-shadow:var(--shadow-hover)}
.soon-card img{width:56px;height:78px;object-fit:cover;border-radius:6px;flex:0 0 56px;background:#dbe6f7}
.soon-card h4{font-size:.92rem;margin:0 0 3px;font-weight:700}
.soon-card p{font-size:.76rem;color:var(--muted);margin:0}
.soon-date{
  display:inline-block;margin-top:6px;font-size:.7rem;font-weight:700;
  color:var(--accent);background:#e6fbfe;padding:1px 8px;border-radius:999px;
}

/* ===== 友链 & 页脚 ===== */
.friend-links{
  max-width:1240px;margin:0 auto;padding:0 20px 46px;
}
.fl-box{
  border-top:1px solid var(--line);padding-top:26px;
}
.fl-title{
  font-size:.88rem;font-weight:800;color:var(--ink);margin-bottom:12px;
  display:flex;align-items:center;gap:8px;
}
.fl-title i{color:var(--primary);font-size:.8rem}
.fl-content{
  font-size:.82rem;color:var(--muted);line-height:2.1;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 18px;
}
.fl-content a{color:var(--primary);font-weight:600;margin-right:14px}
.site-footer{
  background:#0a1730;color:#8fa9cf;padding:44px 0 26px;
}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 20px}
.footer-top{display:flex;flex-wrap:wrap;gap:34px;justify-content:space-between;margin-bottom:30px}
.footer-brand{flex:1 1 300px}
.footer-brand .brand{color:#fff;margin-bottom:12px}
.footer-brand p{color:#8fa9cf;font-size:.85rem;max-width:400px;line-height:1.9}
.footer-col{flex:0 1 170px}
.footer-col h5{font-size:.85rem;color:#fff;margin-bottom:13px;font-weight:800;letter-spacing:.03em}
.footer-col a{display:block;font-size:.83rem;color:#8fa9cf;padding:4px 0;transition:.18s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:.79rem;color:#6f89b0;
}

/* ===== 回到顶部 ===== */
#backTop{
  position:fixed;right:22px;bottom:26px;z-index:1050;
  width:46px;height:46px;border-radius:50%;border:none;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-size:1rem;cursor:pointer;
  box-shadow:0 8px 22px rgba(37,99,235,.4);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.28s ease;
}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{transform:translateY(-3px)}

/* ===== 底部抽屉弹窗 ===== */
.drawer-mask{
  position:fixed;inset:0;z-index:1080;
  background:rgba(10,23,48,.55);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:.28s ease;
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:1090;
  background:#fff;border-radius:16px 16px 0 0;
  transform:translateY(100%);transition:transform .34s cubic-bezier(.22,.9,.28,1);
  max-height:86vh;overflow-y:auto;
  box-shadow:0 -14px 40px rgba(15,30,61,.24);
}
.drawer.show{transform:translateY(0)}
.drawer-grip{width:44px;height:5px;border-radius:999px;background:#dbe6f7;margin:12px auto 0}
.drawer-inner{max-width:920px;margin:0 auto;padding:18px 24px 34px}
.drawer-close{
  position:absolute;top:14px;right:18px;
  width:36px;height:36px;border-radius:50%;border:none;
  background:#eef4ff;color:var(--primary);font-size:.95rem;cursor:pointer;transition:.2s;
}
.drawer-close:hover{background:var(--primary);color:#fff}
.drawer-head{display:flex;gap:20px;flex-wrap:wrap;margin-bottom:18px;padding-right:44px}
.drawer-poster{
  width:118px;height:168px;border-radius:var(--radius);overflow:hidden;flex:0 0 118px;background:#dbe6f7;
  box-shadow:var(--shadow);
}
.drawer-poster img{width:100%;height:100%;object-fit:cover;display:block}
.drawer-meta{flex:1 1 260px;min-width:0}
.drawer-meta h3{font-size:1.3rem;margin-bottom:8px;font-weight:900}
.drawer-badges{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:10px}
.dbadge{
  font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:999px;
  background:#eef4ff;color:var(--primary);
}
.dbadge.score{background:#e6fbfe;color:#0891b2}
.drawer-score-line{font-size:.83rem;color:var(--muted);margin-bottom:4px}
.drawer-score-line b{color:var(--ink);font-weight:700}
.drawer-plot{
  font-size:.9rem;line-height:1.9;color:#3a4d70;
  background:#f7faff;border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:6px;padding:14px 16px;margin-top:6px;
}
.drawer-actions{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}
@media(max-width:575px){
  .drawer-inner{padding:16px 16px 30px}
  .drawer-poster{width:92px;height:132px;flex:0 0 92px}
  .drawer-meta h3{font-size:1.1rem}
  .poster-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:14px}
  .section{padding:42px 16px}
  .hero-inner{padding:44px 16px 42px}
}

/* --- 子页面追加 --- */
/* 本页专属少量样式，复用站点变量 */
  .about-hero {padding:64px 0 40px;position:relative;overflow:hidden;background:linear-gradient(180deg,#eaf2ff 0%,var(--bg) 100%);}
.about-hero h1 {font-size:clamp(26px,4vw,42px);font-weight:800;line-height:1.25;color:var(--ink);margin:14px 0 16px;letter-spacing:-.5px;}
.about-hero h1 .hl {color:var(--primary);}
.about-lead {max-width:720px;color:var(--muted);font-size:16px;line-height:1.9;margin:0;}
.stat-row {display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px;}
.stat-box {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;box-shadow:var(--shadow);}
.stat-box .num {font-size:26px;font-weight:800;color:var(--primary);letter-spacing:-.5px;}
.stat-box .lbl {font-size:13px;color:var(--muted);margin-top:6px;}
.info-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 26px;height:100%;transition:box-shadow .25s,transform .25s;}
.info-card:hover {box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.info-card .ico {width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(37,99,235,.1);color:var(--primary);font-size:19px;margin-bottom:16px;}
.info-card h3 {font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px;line-height:1.5;}
.info-card p {font-size:14px;line-height:1.85;color:var(--muted);margin:0;}
.rule-list {list-style:none;padding:0;margin:0;}
.rule-list li {display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14.5px;line-height:1.8;color:var(--ink);}
.rule-list li:last-child {border-bottom:none;}
.rule-list li i {color:var(--accent);margin-top:4px;font-size:14px;flex:0 0 auto;}
.qa-item {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:14px;box-shadow:var(--shadow);}
.qa-item h3 {font-size:16px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.qa-item p {font-size:14px;line-height:1.85;color:var(--muted);margin:0;}
.about-cta {background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);border-radius:var(--radius);padding:38px 30px;text-align:center;color:#fff;box-shadow:var(--shadow-hover);}
.about-cta h2 {font-size:clamp(20px,3vw,26px);font-weight:800;margin-bottom:12px;color:#fff;}
.about-cta p {max-width:600px;margin:0 auto 22px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.9);}
.about-cta .btn-main {background:#fff;color:var(--primary);border-color:#fff;font-weight:700;}
.about-cta .btn-main:hover {background:rgba(255,255,255,.88);color:var(--primary);}
.about-cta .btn-ghost {color:#fff;border-color:rgba(255,255,255,.65);}
.about-cta .btn-ghost:hover {background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
/* 导航高亮当前页 */
  .nav-links a.active {color:var(--primary);font-weight:700;}
.nav-links a.active::after {transform:scaleX(1);}
.stat-row {grid-template-columns:repeat(2,1fr);}
.about-hero {padding:44px 0 30px;}
.stat-row {grid-template-columns:1fr;}

/* --- 子页面追加 --- */
/* 导航 */
  .site-nav {
    position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);
    backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
  }
/* 页头 */
  .page-head {
    position:relative;overflow:hidden;
    background:linear-gradient(160deg,#eaf2ff 0%,#f4f8ff 55%,#eef7fb 100%);
    border-bottom:1px solid var(--line);
  }
.page-head-inner {
    max-width:900px;margin:0 auto;padding:56px 20px 48px;position:relative;z-index:2;
  }
.page-head h1 {
    margin:0 0 14px;font-size:clamp(24px,4vw,36px);line-height:1.28;font-weight:800;letter-spacing:-.5px;
  }
.head-meta {margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;}
.head-meta span {
    display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);
    background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  }
/* 正文 */
  .section {max-width:900px;margin:0 auto;padding:44px 20px;}
.doc-card {
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    box-shadow:var(--shadow);padding:34px 34px 12px;
  }
.doc-card + .doc-card {margin-top:26px;}
.doc-card h2 {
    display:flex;align-items:center;gap:11px;margin:0 0 16px;
    font-size:20px;font-weight:700;letter-spacing:-.2px;color:var(--ink);
  }
.doc-card h2 i {
    width:34px;height:34px;flex:none;border-radius:9px;display:grid;place-items:center;
    background:linear-gradient(135deg,rgba(37,99,235,.14),rgba(6,182,212,.16));
    color:var(--primary);font-size:15px;
  }
.doc-card h3 {
    font-size:16px;font-weight:650;margin:22px 0 8px;color:var(--ink);
  }
.doc-card p {margin:0 0 15px;color:#31415e;font-size:15.2px;}
.doc-card ul {margin:0 0 16px;padding-left:0;list-style:none;}
.doc-card ul li {
    position:relative;padding-left:22px;margin-bottom:10px;color:#31415e;font-size:15.2px;
  }
.doc-card ul li::before {
    content:"";position:absolute;left:4px;top:.68em;width:7px;height:7px;border-radius:50%;
    background:linear-gradient(135deg,var(--primary),var(--accent));
  }
.doc-card strong {color:var(--ink);font-weight:650;}
.note {
    background:rgba(37,99,235,.05);border-left:3px solid var(--primary);
    border-radius:0 8px 8px 0;padding:14px 18px;margin:4px 0 20px;color:#2c3d5c;font-size:14.6px;
  }
.note i {color:var(--primary);margin-right:7px;}
.doc-foot {
    margin-top:6px;padding:18px 0 26px;border-top:1px dashed var(--line);
    color:var(--muted);font-size:13.6px;display:flex;flex-wrap:wrap;gap:8px 18px;
  }
.doc-foot span {display:inline-flex;align-items:center;gap:7px;}
/* 快捷入口 */
  .quick-links {display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-top:8px;}
.quick-links a {
    display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius);padding:15px 16px;color:var(--ink);font-weight:600;font-size:14.6px;
    box-shadow:var(--shadow);transition:.22s;
  }
.quick-links a:hover {transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(37,99,235,.35);color:var(--primary);}
.quick-links a i {
    width:32px;height:32px;flex:none;border-radius:8px;display:grid;place-items:center;
    background:rgba(6,182,212,.12);color:var(--accent);font-size:14px;
  }
.quick-links a small {display:block;font-weight:400;color:var(--muted);font-size:12.6px;margin-top:2px;}
/* 页脚 */
  .site-foot {
    background:#0f1e3d;color:#b9c6e0;margin-top:30px;
  }
.foot-inner {
    max-width:1200px;margin:0 auto;padding:44px 20px 26px;
    display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;
  }
.foot-brand {display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;color:#fff;margin-bottom:12px;}
.foot-brand .brand-mark {background:linear-gradient(135deg,var(--primary),var(--accent));}
.site-foot p {font-size:13.8px;line-height:1.8;color:#9fb0cd;margin:0;}
.site-foot h4 {font-size:14px;color:#fff;margin:0 0 14px;font-weight:650;letter-spacing:.3px;}
.foot-list {list-style:none;padding:0;margin:0;}
.foot-list li {margin-bottom:9px;}
.foot-list a {color:#9fb0cd;font-size:13.8px;transition:.2s;}
.foot-list a:hover {color:#fff;}
.foot-bottom {
    border-top:1px solid rgba(255,255,255,.09);padding:16px 20px;text-align:center;
    font-size:13px;color:#8296b8;
  }
.foot-bottom .fl {color:#9fb0cd;}
.foot-inner {grid-template-columns:1fr;gap:26px;}
.doc-card {padding:24px 20px 6px;}

/* --- 子页面追加 --- */
.guide-wrap {max-width:1080px;margin:0 auto;padding:0 20px;}
.guide-hero {padding:64px 0 40px;background:linear-gradient(180deg,#eaf2ff 0%,var(--bg) 100%);border-bottom:1px solid var(--line);}
.guide-hero h1 {font-size:clamp(26px,4vw,42px);font-weight:900;color:var(--ink);line-height:1.25;margin:14px 0 16px;letter-spacing:-.5px;}
.guide-hero p {color:var(--muted);font-size:16px;line-height:1.85;max-width:720px;}
.guide-eyebrow {display:inline-flex;align-items:center;gap:8px;background:rgba(37,99,235,.1);color:var(--primary);font-weight:700;font-size:13px;letter-spacing:.6px;padding:6px 14px;border-radius:999px;}
.guide-toc {display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.guide-toc a {display:inline-flex;align-items:center;gap:7px;background:var(--card);border:1px solid var(--line);color:var(--ink);font-size:13.5px;font-weight:600;padding:8px 15px;border-radius:999px;box-shadow:var(--shadow);transition:.2s;}
.guide-toc a:hover {border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.step-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;height:100%;transition:.22s;}
.step-card:hover {box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:rgba(37,99,235,.35);}
.step-num {width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:18px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));margin-bottom:16px;}
.step-card h3 {font-size:18px;font-weight:800;color:var(--ink);margin-bottom:10px;}
.step-card p {color:var(--muted);font-size:14.5px;line-height:1.8;margin:0;}
.tip-list {list-style:none;padding:0;margin:0;}
.tip-list li {display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);color:var(--muted);font-size:15px;line-height:1.8;}
.tip-list li:last-child {border-bottom:none;}
.tip-list i {color:var(--accent);font-size:17px;margin-top:3px;flex-shrink:0;}
.tip-list strong {color:var(--ink);font-weight:700;}
.qa-item h3 i {color:var(--primary);margin-top:3px;}
.qa-item p + p {margin-top:8px;}
.guide-note {background:rgba(6,182,212,.08);border-left:4px solid var(--accent);border-radius:var(--radius);padding:18px 22px;color:var(--ink);font-size:14.5px;line-height:1.85;margin-top:22px;}
.guide-note strong {color:var(--primary);}
.device-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:24px;}
.device-item {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center;box-shadow:var(--shadow);}
.device-item i {font-size:26px;color:var(--primary);margin-bottom:10px;display:block;}
.device-item h4 {font-size:15px;font-weight:800;color:var(--ink);margin-bottom:6px;}
.device-item p {font-size:13.5px;color:var(--muted);line-height:1.7;margin:0;}
.guide-cta {margin-top:56px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:var(--radius);padding:40px 32px;text-align:center;color:#fff;box-shadow:var(--shadow-hover);}
.guide-cta h2 {font-size:clamp(20px,3vw,28px);font-weight:900;margin-bottom:12px;}
.guide-cta p {font-size:15px;opacity:.92;max-width:560px;margin:0 auto 22px;line-height:1.8;}
.guide-cta .btn-main {background:#fff;color:var(--primary);}
.guide-cta .btn-ghost {background:transparent;border:1.5px solid rgba(255,255,255,.7);color:#fff;}
.guide-hero {padding:44px 0 30px;}
.guide-cta {padding:30px 20px;}

/* --- 子页面追加 --- */
/* FAQ 页专属少量样式，沿用首页配色变量 */
  .faq-hero { padding: 64px 0 40px; }
.faq-wrap { max-width: 900px; margin: 0 auto; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: box-shadow .25s ease, border-color .25s ease;
  }
.faq-item:hover { box-shadow: var(--shadow-hover); border-color: #cfe0f9; }
.faq-item.open { border-color: var(--primary); }
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    background: transparent;
    border: 0;
    padding: 20px 22px;
    cursor: pointer;
    font-family: inherit;
    font-size: 16.5px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.5;
  }
.faq-q .q-idx {
    flex: 0 0 auto;
    width: 30px; height: 30px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 8px;
    background: rgba(37,99,235,.09);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
  }
.faq-q .q-text { flex: 1 1 auto; }
.faq-q .q-arrow {
    flex: 0 0 auto;
    color: var(--muted);
    font-size: 13px;
    transition: transform .25s ease, color .25s ease;
  }
.faq-item.open .q-arrow { transform: rotate(180deg); color: var(--primary); }
.faq-a {
    display: none;
    padding: 0 22px 22px 66px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.85;
  }
.faq-item.open .faq-a { display: block; }
.faq-a p { margin: 0 0 10px; }
.faq-a p:last-child { margin-bottom: 0; }
.faq-a strong { color: var(--ink); font-weight: 600; }
.faq-a code {
    background: rgba(6,182,212,.1);
    color: #0b7f95;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 13.5px;
  }
.faq-tips {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 34px;
  }
.faq-tip {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px 20px;
    box-shadow: var(--shadow);
  }
.faq-tip i {
    display: inline-flex;
    width: 38px; height: 38px;
    align-items: center; justify-content: center;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 16px;
    margin-bottom: 12px;
  }
.faq-tip h3 {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--ink);
    margin: 0 0 8px;
  }
.faq-tip p {
    margin: 0;
    font-size: 14px;
    line-height: 1.75;
    color: var(--muted);
  }
.faq-help {
    margin-top: 40px;
    background: linear-gradient(135deg, rgba(37,99,235,.06), rgba(6,182,212,.07));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 26px;
    text-align: center;
  }
.faq-help h3 {
    font-size: 19px;
    font-weight: 800;
    color: var(--ink);
    margin: 0 0 10px;
  }
.faq-help p {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.8;
  }
.faq-help .faq-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
  }
.faq-hero { padding: 40px 0 26px; }
.faq-q { padding: 16px 16px; font-size: 15px; gap: 10px; }
.faq-a { padding: 0 16px 18px 56px; font-size: 14.5px; }
.faq-tips { grid-template-columns: 1fr; }
.faq-help { padding: 24px 18px; }