:root{
  --primary:#9f1239;
  --accent:#e11d48;
  --bg:#fafafa;
  --text:#3f0a1a;
  --line:#e6d6db;
  --muted:#8a5a67;
  --side-width:264px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-weight:400;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}

/* ===== 布局：左侧固定侧栏 + 右侧主区 ===== */
.layout{
  display:flex;
  min-height:100vh;
}
.sidebar{
  width:var(--side-width);
  position:fixed;
  top:0;left:0;bottom:0;
  border-right:1px solid var(--line);
  background:var(--bg);
  padding:34px 24px 28px;
  display:flex;
  flex-direction:column;
  z-index:1000;
  overflow-y:auto;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:1.18rem;
  letter-spacing:-.02em;
  color:var(--primary);
  margin-bottom:6px;
}
.brand i{font-size:1.05rem;color:var(--accent);}
.brand-sub{
  font-size:.72rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
  margin-bottom:36px;
  padding-left:2px;
}
.nav-list{
  list-style:none;
  padding:0;margin:0;
  display:flex;
  flex-direction:column;
  gap:2px;
  flex:1;
}
.nav-list li a{
  display:flex;
  align-items:center;
  gap:11px;
  padding:11px 12px;
  border-radius:6px;
  font-size:.93rem;
  font-weight:500;
  color:var(--text);
  border:1px solid transparent;
  transition:.22s;
}
.nav-list li a i{
  font-size:.85rem;
  width:18px;
  text-align:center;
  color:var(--muted);
  transition:.22s;
}
.nav-list li a:hover,.nav-list li a:focus{
  border-color:var(--line);
  background:#fff;
  color:var(--primary);
}
.nav-list li a:hover i{color:var(--accent);}
.side-foot{
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:.75rem;
  color:var(--muted);
  line-height:1.8;
}
.side-foot a{color:var(--primary);font-weight:600;}
.side-foot a:hover{color:var(--accent);}

.main{
  margin-left:var(--side-width);
  flex:1;
  min-width:0;
  position:relative;
}
.section{
  padding:96px 56px;
  border-bottom:1px solid var(--line);
  position:relative;
}
.section-head{
  max-width:760px;
  margin-bottom:52px;
}
.eyebrow{
  font-size:.74rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:700;
  margin-bottom:16px;
  display:block;
}
h2.section-title{
  font-size:2.35rem;
  font-weight:800;
  letter-spacing:-.035em;
  line-height:1.15;
  margin:0 0 16px;
  color:var(--text);
}
.section-desc{
  color:var(--muted);
  font-size:1rem;
  max-width:600px;
  margin:0;
}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  padding:150px 56px 140px;
  border-bottom:1px solid var(--line);
  isolation:isolate;
}
.hero-blob{
  position:absolute;
  border-radius:50%;
  filter:blur(90px);
  opacity:.5;
  pointer-events:none;
  z-index:-1;
}
.hero-blob.b1{width:520px;height:520px;background:radial-gradient(circle,#fecdd3 0%,rgba(254,205,211,0) 70%);top:-160px;right:-80px;}
.hero-blob.b2{width:420px;height:420px;background:radial-gradient(circle,#fda4af 0%,rgba(253,164,175,0) 70%);bottom:-180px;left:8%;}
.hero-inner{max-width:860px;position:relative;}
.hero h1{
  font-size:4rem;
  font-weight:900;
  letter-spacing:-.045em;
  line-height:1.05;
  margin:0 0 26px;
  color:var(--text);
}
.hero h1 em{
  font-style:normal;
  color:var(--primary);
  position:relative;
  white-space:nowrap;
}
.hero p.lead{
  font-size:1.16rem;
  color:var(--muted);
  max-width:560px;
  margin:0 0 42px;
  font-weight:400;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.btn-solid{
  display:inline-flex;
  align-items:center;
  gap:9px;
  background:var(--primary);
  color:#fff;
  padding:15px 30px;
  border-radius:6px;
  font-weight:600;
  font-size:.95rem;
  border:1px solid var(--primary);
  transition:.22s;
}
.btn-solid:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:9px;
  background:transparent;
  color:var(--text);
  padding:15px 30px;
  border-radius:6px;
  font-weight:600;
  font-size:.95rem;
  border:1px solid var(--line);
  transition:.22s;
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:#fff;}
.hero-meta{
  margin-top:56px;
  display:flex;
  gap:44px;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding-top:26px;
  max-width:620px;
}
.hero-meta div{display:flex;flex-direction:column;}
.hero-meta strong{font-size:1.5rem;font-weight:800;letter-spacing:-.03em;color:var(--primary);}
.hero-meta span{font-size:.78rem;color:var(--muted);letter-spacing:.06em;}

/* ===== 对比表格 ===== */
.table-wrap{
  border:1px solid var(--line);
  border-radius:8px;
  overflow:hidden;
  background:#fff;
}
table.cmp{
  width:100%;
  border-collapse:collapse;
  font-size:.94rem;
}
table.cmp thead th{
  text-align:left;
  padding:20px 24px;
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:var(--muted);
  border-bottom:1px solid var(--line);
  background:#fdf7f8;
}
table.cmp thead th.hl{color:var(--primary);}
table.cmp tbody td{
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp tbody td:first-child{font-weight:600;width:24%;}
table.cmp td.yes{color:var(--primary);font-weight:600;}
table.cmp td.no{color:var(--muted);}
table.cmp tbody tr:hover{background:#fdfafb;}
.tick{color:var(--accent);margin-right:7px;font-size:.8rem;}
.dash{color:#d8c3c9;margin-right:7px;}

/* ===== 特色瀑布流卡片 ===== */
.masonry{
  columns:3;
  column-gap:26px;
}
.card-m{
  break-inside:avoid;
  border:1px solid var(--line);
  border-radius:8px;
  margin-bottom:26px;
  overflow:hidden;
  background:#fff;
  transition:border-color .25s;
}
.card-m:hover{border-color:#d9b6bf;}
.card-m .thumb{
  position:relative;
  overflow:hidden;
  background:#f3ecee;
}
.card-m .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .55s cubic-bezier(.2,.7,.3,1);
  aspect-ratio:3/4;
}
.card-m:hover .thumb img{transform:scale(1.07);}
.thumb-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(63,10,26,.82),rgba(63,10,26,.12) 55%,transparent);
  opacity:0;
  transition:opacity .35s;
  display:flex;
  align-items:flex-end;
  padding:16px;
  color:#fff;
  font-size:.82rem;
  line-height:1.6;
}
.card-m:hover .thumb-mask{opacity:1;}
.card-body-m{padding:18px 20px 22px;}
.card-tag{
  font-size:.68rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  font-weight:700;
  color:var(--accent);
  margin-bottom:9px;
  display:block;
}
.card-body-m h3{
  font-size:1.03rem;
  font-weight:700;
  margin:0 0 8px;
  letter-spacing:-.01em;
}
.card-body-m p{
  font-size:.85rem;
  color:var(--muted);
  margin:0;
  line-height:1.65;
}

/* ===== 介绍：编号清单 ===== */
.steps{
  counter-reset:step;
  max-width:820px;
}
.step{
  counter-increment:step;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:26px;
  padding:34px 0;
  border-bottom:1px solid var(--line);
}
.step:first-child{padding-top:0;}
.step:last-child{border-bottom:none;}
.step-num{
  font-size:1.7rem;
  font-weight:900;
  letter-spacing:-.04em;
  color:var(--primary);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.step-num::before{content:"0" counter(step);}
.step-body h3{
  font-size:1.16rem;
  font-weight:700;
  margin:0 0 10px;
  letter-spacing:-.015em;
}
.step-body p{
  margin:0;
  color:var(--muted);
  font-size:.94rem;
  max-width:600px;
}

/* ===== FAQ ===== */
.faq-list{max-width:840px;}
.faq-item{
  border-bottom:1px solid var(--line);
  padding:0;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:26px 0;
  font-size:1.03rem;
  font-weight:600;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{
  color:var(--accent);
  font-size:.8rem;
  transition:transform .25s;
  flex-shrink:0;
}
.faq-item[open] summary i{transform:rotate(45deg);}
.faq-item p{
  margin:0 0 26px;
  color:var(--muted);
  font-size:.94rem;
  max-width:680px;
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{
  padding:110px 56px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.cta-blob{
  position:absolute;
  width:600px;height:600px;
  border-radius:50%;
  background:radial-gradient(circle,#fecdd3 0%,rgba(254,205,211,0) 68%);
  filter:blur(80px);
  right:-140px;top:-220px;
  z-index:-1;
  opacity:.7;
}
.cta-inner{max-width:680px;}
.cta-inner h2{
  font-size:3rem;
  font-weight:900;
  letter-spacing:-.04em;
  line-height:1.1;
  margin:0 0 22px;
}
.cta-inner p{
  color:var(--muted);
  font-size:1.05rem;
  margin:0 0 40px;
  max-width:540px;
}

/* ===== 友情链接 + 页脚 ===== */
.friendzone{
  padding:52px 56px;
  border-bottom:1px solid var(--line);
}
.friendzone h4{
  font-size:.76rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
  margin:0 0 20px;
}
.friendzone .fl-link{
  font-size:.9rem;
  color:var(--primary);
  word-break:break-all;
}
footer.site-foot{
  padding:48px 56px 60px;
  display:flex;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  align-items:flex-start;
}
.foot-left strong{
  font-weight:800;
  color:var(--primary);
  font-size:1rem;
  display:block;
  margin-bottom:8px;
}
.foot-left p{
  margin:0;
  font-size:.82rem;
  color:var(--muted);
  max-width:400px;
  line-height:1.75;
}
.foot-links{
  display:flex;
  gap:26px;
  flex-wrap:wrap;
  font-size:.84rem;
}
.foot-links a{color:var(--text);font-weight:500;}
.foot-links a:hover{color:var(--accent);}

/* ===== 图片懒加载渐显 ===== */
.lazy-img{opacity:0;transform:translateY(10px);transition:opacity .6s ease,transform .6s ease;}
.lazy-img.loaded{opacity:1;transform:none;}

/* ===== 移动端 ===== */
.mobile-bar{
  display:none;
  position:sticky;
  top:0;
  z-index:1100;
  background:rgba(250,250,250,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  padding:14px 20px;
  align-items:center;
  justify-content:space-between;
}
.mobile-bar .m-brand{
  font-weight:800;
  font-size:1rem;
  color:var(--primary);
  display:flex;
  align-items:center;
  gap:8px;
}
.mobile-bar .m-brand i{color:var(--accent);font-size:.9rem;}
.menu-toggle{
  border:1px solid var(--line);
  background:#fff;
  border-radius:6px;
  width:40px;height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--text);
  cursor:pointer;
}
.mobile-nav{
  display:none;
  position:fixed;
  top:69px;left:0;right:0;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  padding:14px 20px 22px;
  z-index:1090;
}
.mobile-nav.open{display:block;}
.mobile-nav ul{
  list-style:none;
  padding:0;margin:0;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.mobile-nav ul li a{
  display:flex;
  align-items:center;
  gap:11px;
  padding:13px 10px;
  border-radius:6px;
  font-size:.95rem;
  font-weight:500;
  border:1px solid transparent;
}
.mobile-nav ul li a:hover,.mobile-nav ul li a:active{
  border-color:var(--line);
  background:#fff;
  color:var(--primary);
}
.mobile-nav ul li a i{color:var(--muted);width:18px;text-align:center;font-size:.85rem;}

@media (max-width:1199px){
  .masonry{columns:2;}
  .hero h1{font-size:3.2rem;}
}
@media (max-width:991px){
  .sidebar{display:none;}
  .mobile-bar{display:flex;}
  .main{margin-left:0;}
  .hero{padding:80px 24px 72px;}
  .hero h1{font-size:2.6rem;}
  .hero p.lead{font-size:1.02rem;}
  .hero-meta{gap:30px;}
  .section{padding:68px 24px;}
  .cta-section{padding:76px 24px;}
  .cta-inner h2{font-size:2.2rem;}
  .friendzone{padding:40px 24px;}
  footer.site-foot{padding:38px 24px 48px;flex-direction:column;}
  h2.section-title{font-size:1.85rem;}
}
@media (max-width:640px){
  .masonry{columns:1;}
  .hero h1{font-size:2.1rem;}
  .hero-meta{gap:22px;font-size:.9rem;}
  .hero-meta strong{font-size:1.2rem;}
  table.cmp thead th,table.cmp tbody td{padding:14px 14px;font-size:.85rem;}
  table.cmp tbody td:first-child{width:30%;}
  .step{grid-template-columns:44px 1fr;gap:16px;}
  .step-num{font-size:1.3rem;}
  .cta-inner h2{font-size:1.75rem;}
  .btn-solid,.btn-ghost{padding:13px 22px;font-size:.9rem;}
  h2.section-title{font-size:1.6rem;}
}

/* --- 子页面追加 --- */
.about-block {background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 28px;margin-bottom:22px;}
.about-block h2 {font-size:1.28rem;font-weight:800;color:var(--primary);margin-bottom:12px;letter-spacing:.2px;}
.about-block h3 {font-size:1.05rem;font-weight:700;color:var(--text);margin:18px 0 8px;}
.about-block p {color:var(--text);line-height:1.9;margin-bottom:10px;opacity:.9;}
.about-block ul {list-style:none;padding-left:0;margin:8px 0 0;}
.about-block ul li {position:relative;padding-left:22px;margin-bottom:9px;line-height:1.8;color:var(--text);opacity:.92;}
.about-block ul li::before {content:"●";position:absolute;left:0;top:0;color:var(--accent);font-size:.7rem;top:.45em;}
.fact-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:8px;}
.fact-item {background:rgba(159,18,57,.045);border:1px solid var(--line);border-radius:12px;padding:16px 18px;}
.fact-item .num {font-size:1.5rem;font-weight:900;color:var(--accent);line-height:1.2;}
.fact-item .lbl {font-size:.85rem;color:var(--muted);margin-top:4px;}
.about-quote {border-left:4px solid var(--accent);background:rgba(225,29,72,.05);padding:14px 18px;border-radius:0 10px 10px 0;color:var(--text);font-size:.96rem;line-height:1.85;margin:14px 0;}
.about-quote span {display:block;margin-top:8px;font-size:.82rem;color:var(--muted);}

/* --- 子页面追加 --- */
.disc-hero {padding:40px 0 8px;}
.disc-hero h1 {font-size:clamp(1.6rem,4vw,2.3rem);font-weight:800;line-height:1.3;color:var(--text);margin-bottom:12px;}
.disc-hero p {color:var(--muted);font-size:.98rem;line-height:1.85;max-width:760px;}
.disc-tag {display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;color:var(--primary);background:rgba(159,18,57,.08);border:1px solid var(--line);padding:5px 12px;border-radius:999px;margin-bottom:16px;}
.disc-block {background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 26px;margin-bottom:20px;}
.disc-block h2 {font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.disc-block h2 i {color:var(--accent);font-size:1rem;}
.disc-block h3 {font-size:1rem;font-weight:600;color:var(--primary);margin:18px 0 8px;}
.disc-block p,.disc-block li {color:#5a2a38;font-size:.94rem;line-height:1.9;}
.disc-block p+p {margin-top:10px;}
.disc-block ul {padding-left:20px;margin:8px 0;}
.disc-block ul li {margin-bottom:7px;}
.disc-block ul li::marker {color:var(--accent);}
.disc-note {background:rgba(225,29,72,.05);border-left:3px solid var(--accent);padding:14px 18px;border-radius:0 10px 10px 0;margin-top:14px;font-size:.9rem;color:#6b2436;line-height:1.85;}
.disc-meta {font-size:.82rem;color:var(--muted);margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);}
.disc-block {padding:18px 16px;}

/* --- 子页面追加 --- */
.guide-step { display:flex; gap:16px; padding:18px 0; border-bottom:1px dashed var(--line); }
.guide-step:last-child { border-bottom:0; }
.guide-step .step-no { flex:0 0 44px; height:44px; border-radius:12px; background:linear-gradient(135deg,var(--primary),var(--accent)); color:#fff; font-weight:800; display:flex; align-items:center; justify-content:center; font-size:1rem; }
.guide-step h3 { font-size:1.02rem; margin:0 0 6px; color:var(--text); font-weight:700; }
.guide-step p { margin:0; color:var(--muted); font-size:.92rem; line-height:1.75; }
.guide-tip { background:#fff; border:1px solid var(--line); border-left:4px solid var(--accent); border-radius:10px; padding:14px 18px; margin:18px 0; font-size:.92rem; color:var(--muted); line-height:1.8; }
.guide-tip strong { color:var(--primary); }
.faq-item h3 { font-size:.98rem; margin:0 0 8px; color:var(--primary); font-weight:700; }
.guide-tagline { display:inline-flex; align-items:center; gap:8px; font-size:.82rem; color:var(--muted); }
.guide-inline-link { color:var(--primary); font-weight:600; text-decoration:none; border-bottom:1px solid rgba(159,18,57,.3); }
.guide-inline-link:hover { color:var(--accent); border-bottom-color:var(--accent); }

/* --- 子页面追加 --- */
.rank-note {
    font-size:13px;color:var(--muted);line-height:1.9;
    border-left:3px solid var(--accent);padding:2px 0 2px 14px;margin-top:14px;
  }
.rank-tabs {display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 6px;}
.rank-tab {
    display:inline-flex;align-items:center;gap:7px;
    padding:8px 16px;border-radius:999px;border:1px solid var(--line);
    background:#fff;color:var(--text);font-size:14px;font-weight:600;
    text-decoration:none;transition:.18s;
  }
.rank-tab:hover {border-color:var(--accent);color:var(--primary);text-decoration:none;}
.rank-tab.on {background:var(--primary);border-color:var(--primary);color:#fff;}
.rank-tab .num {font-size:12px;opacity:.75;font-weight:500;}
.rank-badge {
    display:inline-block;min-width:26px;text-align:center;font-weight:800;
    font-size:13px;letter-spacing:-.5px;
  }
.rank-badge.g1 {color:#b45309;}
.rank-badge.g2 {color:#6b7280;}
.rank-badge.g3 {color:#9a5b3a;}
.rank-title {font-weight:700;color:var(--text);}
.rank-title:hover {color:var(--primary);}
.rank-sub {font-size:12.5px;color:var(--muted);}
.rank-score {
    font-variant-numeric:tabular-nums;font-weight:700;color:var(--primary);
  }
.trend-up {color:#15803d;font-size:12px;font-weight:600;}
.trend-down {color:var(--muted);font-size:12px;font-weight:600;}
.trend-new {color:var(--accent);font-size:12px;font-weight:700;}
.rank-rule {display:grid;gap:14px;}
.rank-rule-item {
    background:#fff;border:1px solid var(--line);border-radius:12px;
    padding:16px 18px;
  }
.rank-rule-item h3 {
    font-size:15px;font-weight:700;margin:0 0 6px;color:var(--text);
    display:flex;align-items:center;gap:8px;
  }
.rank-rule-item h3 i {color:var(--accent);font-size:14px;}
.rank-rule-item p {
    margin:0;font-size:13.5px;line-height:1.85;color:var(--muted);
  }
.rank-tabs {gap:8px;}
.rank-tab {padding:7px 12px;font-size:13px;}
.rank-sub {display:none;}

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#3f0a1a !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#3f0a1a !important; }