:root{
  --c-main:#64748b;
  --c-accent:#94a3b8;
  --c-bg:#f1f5f9;
  --c-text:#1e293b;
  --c-card:#ffffff;
  --c-line:rgba(100,116,139,.16);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --shadow-soft:0 18px 44px -22px rgba(100,116,139,.42),0 6px 18px -12px rgba(30,41,59,.18);
  --shadow-hover:0 26px 60px -24px rgba(100,116,139,.55),0 10px 24px -14px rgba(30,41,59,.24);
  --sidebar-w:250px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--c-bg);
  color:var(--c-text);
  font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  font-weight:400;
  line-height:1.75;
  background-image:radial-gradient(rgba(100,116,139,.15) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{font-weight:900;letter-spacing:-.02em;line-height:1.18;color:var(--c-text);}
.mono{font-family:'Inter',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:-.03em;}
a{text-decoration:none;}

/* ---------- 进度条 ---------- */
#readProgress{
  position:fixed;top:0;left:0;height:4px;width:0%;
  background:linear-gradient(90deg,var(--c-main),var(--c-accent));
  z-index:2000;border-radius:0 4px 4px 0;
  transition:width .08s linear;
}

/* ---------- 顶部导航 ---------- */
.topbar{
  position:sticky;top:0;z-index:1500;
  background:rgba(241,245,249,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.topbar.scrolled{
  background:rgba(255,255,255,.9);
  border-bottom-color:var(--c-line);
  box-shadow:0 12px 34px -26px rgba(100,116,139,.8);
}
.topbar-inner{
  max-width:1440px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand-logo{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:900;font-size:1.32rem;color:var(--c-text);
  letter-spacing:-.03em;white-space:nowrap;
}
.brand-logo i{color:var(--c-main);font-size:1.1rem;}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;}
.nav-links a{
  display:inline-block;padding:8px 15px;border-radius:999px;
  color:var(--c-text);font-size:.94rem;font-weight:500;opacity:.82;
  transition:all .25s ease;white-space:nowrap;
}
.nav-links a:hover,.nav-links a.active{
  background:rgba(100,116,139,.12);opacity:1;color:var(--c-main);font-weight:600;
}
.nav-toggle{
  display:none;border:1px solid var(--c-line);background:#fff;
  width:44px;height:44px;border-radius:14px;color:var(--c-main);
  font-size:1.1rem;box-shadow:var(--shadow-soft);
}

/* ---------- 布局 ---------- */
.shell{
  max-width:1440px;margin:0 auto;padding:28px 20px 0;
  display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);
  gap:26px;align-items:start;
}
.sidebar{
  position:sticky;top:88px;
  background:var(--c-card);
  border-radius:var(--r-lg);
  padding:22px 18px;
  box-shadow:var(--shadow-soft);
  border:1px solid rgba(255,255,255,.9);
}
.sidebar-title{
  font-size:.74rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-accent);margin:0 0 14px 4px;
}
.side-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:5px;}
.side-nav a{
  display:flex;align-items:center;gap:11px;
  padding:11px 13px;border-radius:var(--r-sm);
  color:var(--c-text);font-size:.93rem;font-weight:500;
  transition:all .22s ease;
}
.side-nav a i{width:17px;text-align:center;color:var(--c-accent);font-size:.88rem;transition:color .22s;}
.side-nav a:hover,.side-nav a.active{
  background:rgba(100,116,139,.1);color:var(--c-main);font-weight:700;
  transform:translateX(3px);
}
.side-nav a:hover i,.side-nav a.active i{color:var(--c-main);}
.side-card{
  margin-top:22px;padding:16px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(100,116,139,.12),rgba(148,163,184,.08));
  border:1px dashed rgba(100,116,139,.32);
}
.side-card p{margin:0;font-size:.83rem;line-height:1.7;color:#475569;}
.side-card .big{font-size:1.6rem;font-weight:900;color:var(--c-main);display:block;}

/* ---------- 主内容 ---------- */
.content{min-width:0;display:flex;flex-direction:column;gap:26px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:44px 34px 38px;
  background:radial-gradient(1100px 380px at 12% -20%,rgba(100,116,139,.2),transparent 62%),
             radial-gradient(760px 340px at 96% 8%,rgba(148,163,184,.26),transparent 60%),
             #ffffff;
  box-shadow:var(--shadow-soft);
  border:1px solid rgba(255,255,255,.9);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(100,116,139,.09) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(100,116,139,.09) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 70% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 70% 20%,#000 0%,transparent 78%);
}
.hero h1{
  position:relative;font-size:clamp(1.85rem,4.2vw,3rem);
  margin:14px 0 14px;max-width:16em;
}
.hero h1 .hl{
  background:linear-gradient(90deg,var(--c-main),var(--c-accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{position:relative;max-width:38em;color:#475569;font-size:1.02rem;margin:0 0 26px;}
.eyebrow{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:6px 15px;border-radius:999px;font-size:.8rem;font-weight:700;letter-spacing:.06em;
  background:rgba(100,116,139,.13);color:var(--c-main);
}
.cloud{position:relative;display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.cloud span{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 17px;border-radius:999px;font-size:.87rem;font-weight:600;
  background:#fff;color:var(--c-main);
  border:1px solid rgba(100,116,139,.24);
  box-shadow:0 10px 24px -18px rgba(100,116,139,.85);
  animation:floatTag 5.5s ease-in-out infinite;
}
.cloud span:nth-child(2n){animation-delay:.7s;}
.cloud span:nth-child(3n){animation-delay:1.4s;}
.cloud span:nth-child(4n){animation-delay:2.1s;}
.cloud span:hover{background:var(--c-main);color:#fff;transform:translateY(-3px);transition:.25s;}
@keyframes floatTag{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-6px);}
}
.hero-stats{
  position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;margin-top:30px;
}
.hero-stats div{
  padding:16px 18px;border-radius:var(--r-md);
  background:rgba(241,245,249,.9);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 14px 30px -24px rgba(100,116,139,.7);
}
.hero-stats b{display:block;font-size:1.85rem;font-weight:900;color:var(--c-main);line-height:1.1;}
.hero-stats small{font-size:.78rem;color:#64748b;font-weight:600;letter-spacing:.04em;}

/* ---------- 区块通用 ---------- */
.block{
  border-radius:var(--r-lg);background:var(--c-card);
  padding:32px 30px;box-shadow:var(--shadow-soft);
  border:1px solid rgba(255,255,255,.9);
}
.block-head{margin-bottom:24px;}
.block-head .kicker{
  font-size:.74rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;
  color:var(--c-accent);display:block;margin-bottom:8px;
}
.block-head h2{font-size:clamp(1.4rem,2.6vw,2rem);margin:0 0 8px;}
.block-head p{margin:0;color:#64748b;font-size:.94rem;max-width:42em;}

/* ---------- 对比表格 ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--r-md);border:1px solid var(--c-line);}
table.cmp{
  width:100%;border-collapse:separate;border-spacing:0;min-width:620px;font-size:.92rem;
}
table.cmp thead th{
  background:rgba(100,116,139,.1);color:var(--c-main);
  font-weight:800;font-size:.84rem;letter-spacing:.06em;
  padding:15px 18px;text-align:left;border-bottom:1px solid var(--c-line);
}
table.cmp thead th:first-child{border-radius:var(--r-md) 0 0 0;}
table.cmp thead th:last-child{border-radius:0 var(--r-md) 0 0;}
table.cmp tbody td{padding:15px 18px;border-bottom:1px solid rgba(100,116,139,.1);vertical-align:middle;}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp tbody tr{transition:background .2s;}
table.cmp tbody tr:hover{background:rgba(241,245,249,.85);}
table.cmp td.feat{font-weight:700;color:var(--c-text);}
table.cmp .score{font-weight:900;font-size:1.12rem;color:var(--c-main);}
.pill{
  display:inline-block;padding:3px 11px;border-radius:999px;
  font-size:.76rem;font-weight:700;background:rgba(148,163,184,.24);color:#475569;
}
.pill.ok{background:rgba(100,116,139,.16);color:var(--c-main);}

/* ---------- 特色标签页 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px;}
.tab-btn{
  border:1px solid var(--c-line);background:#fff;color:#475569;
  padding:10px 20px;border-radius:999px;font-size:.89rem;font-weight:700;
  cursor:pointer;transition:all .24s ease;
}
.tab-btn:hover{border-color:var(--c-accent);color:var(--c-main);}
.tab-btn.active{
  background:var(--c-main);border-color:var(--c-main);color:#fff;
  box-shadow:0 14px 28px -18px rgba(100,116,139,.9);
}
.tab-panel{display:none;animation:fadeUp .4s ease;}
.tab-panel.active{display:block;}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}
.panel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
.feat-card{
  border-radius:var(--r-md);padding:20px;
  background:linear-gradient(170deg,#fff,rgba(241,245,249,.9));
  border:1px solid var(--c-line);
  transition:transform .26s ease,box-shadow .26s ease;
}
.feat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.feat-card i{font-size:1.3rem;color:var(--c-main);margin-bottom:12px;display:block;}
.feat-card h4{font-size:1rem;margin:0 0 7px;}
.feat-card p{margin:0;font-size:.87rem;color:#64748b;line-height:1.65;}

/* ---------- 瀑布流卡片 ---------- */
.masonry{columns:3;column-gap:16px;}
@media(max-width:1100px){.masonry{columns:2;}}
@media(max-width:620px){.masonry{columns:1;}}
.poster-card{
  break-inside:avoid;margin-bottom:16px;border-radius:var(--r-md);overflow:hidden;
  background:#fff;border:1px solid var(--c-line);position:relative;
  transition:transform .28s ease,box-shadow .28s ease;
}
.poster-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.poster-thumb{
  position:relative;display:block;width:100%;background:linear-gradient(150deg,rgba(100,116,139,.24),rgba(148,163,184,.34));
  overflow:hidden;
}
.poster-thumb img{display:block;width:100%;height:100%;object-fit:cover;}
.poster-thumb::after{
  content:"";position:absolute;inset:0;background:rgba(30,41,59,.34);
  opacity:0;transition:opacity .3s ease;
}
.poster-play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  opacity:0;transform:scale(.82);transition:all .32s cubic-bezier(.2,.8,.3,1);z-index:2;
}
.poster-play i{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.94);color:var(--c-main);font-size:1.1rem;
  box-shadow:0 14px 32px -10px rgba(30,41,59,.6);
}
.poster-card:hover .poster-thumb::after{opacity:1;}
.poster-card:hover .poster-play{opacity:1;transform:scale(1);}
.poster-body{padding:14px 16px 16px;}
.poster-body h4{font-size:.97rem;margin:0 0 6px;line-height:1.4;}
.poster-body .meta{display:flex;justify-content:space-between;align-items:center;font-size:.78rem;color:#94a3b8;font-weight:600;}
.poster-body .meta .rate{color:var(--c-main);font-weight:900;font-size:.9rem;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin:0;padding:0 0 0 32px;list-style:none;}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--c-main),var(--c-accent),transparent);
  border-radius:2px;
}
.timeline li{position:relative;padding-bottom:26px;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-32px;top:7px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--c-accent);
  box-shadow:0 0 0 5px rgba(148,163,184,.15);
}
.timeline li:nth-child(1)::before{border-color:var(--c-main);}
.timeline .step-tag{
  display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.12em;
  color:var(--c-main);background:rgba(100,116,139,.12);
  padding:3px 11px;border-radius:999px;margin-bottom:8px;
}
.timeline h4{font-size:1.05rem;margin:0 0 6px;}
.timeline p{margin:0;font-size:.9rem;color:#64748b;line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:11px;overflow:hidden;background:#fff;transition:box-shadow .25s;
}
.faq-item:hover{box-shadow:0 16px 34px -26px rgba(100,116,139,.8);}
.faq-q{
  width:100%;border:0;background:transparent;text-align:left;
  padding:17px 20px;font-size:.98rem;font-weight:700;color:var(--c-text);
  display:flex;justify-content:space-between;align-items:center;gap:14px;cursor:pointer;
}
.faq-q i{color:var(--c-accent);transition:transform .3s ease;font-size:.85rem;flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--c-main);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .36s ease;
  font-size:.9rem;color:#64748b;
}
.faq-a div{padding:0 20px 18px;line-height:1.78;}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);padding:46px 34px;text-align:center;
  background:linear-gradient(140deg,var(--c-main),var(--c-accent));
  box-shadow:var(--shadow-hover);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:22px 22px;opacity:.7;
}
.cta h2{position:relative;color:#fff;font-size:clamp(1.4rem,3vw,2.1rem);margin:0 0 12px;}
.cta p{position:relative;color:rgba(255,255,255,.92);max-width:34em;margin:0 auto 26px;font-size:.98rem;}
.btn-cta{
  position:relative;display:inline-flex;align-items:center;gap:10px;
  padding:15px 34px;border-radius:999px;background:#fff;color:var(--c-main);
  font-weight:800;font-size:.98rem;box-shadow:0 18px 38px -16px rgba(30,41,59,.5);
  transition:transform .25s ease,box-shadow .25s ease;
}
.btn-cta:hover{transform:translateY(-3px);box-shadow:0 24px 46px -16px rgba(30,41,59,.6);color:var(--c-main);}

/* ---------- 友链 & 页脚 ---------- */
.friend-links{
  border-radius:var(--r-lg);background:var(--c-card);padding:26px 30px;
  box-shadow:var(--shadow-soft);border:1px solid rgba(255,255,255,.9);
}
.friend-links h3{font-size:1rem;margin:0 0 14px;display:flex;align-items:center;gap:9px;}
.friend-links h3 i{color:var(--c-accent);font-size:.9rem;}
.friend-links .links-row{color:#64748b;font-size:.9rem;line-height:2;word-break:break-all;}
footer.site-footer{
  max-width:1440px;margin:26px auto 0;padding:30px 20px 44px;
  display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--c-line);
}
footer.site-footer .fbrand{font-weight:900;font-size:1.1rem;}
footer.site-footer .fbrand i{color:var(--c-main);margin-right:7px;}
footer.site-footer nav{display:flex;flex-wrap:wrap;gap:16px;font-size:.87rem;}
footer.site-footer nav a{color:#64748b;transition:color .2s;}
footer.site-footer nav a:hover{color:var(--c-main);}
footer.site-footer .copy{font-size:.82rem;color:#94a3b8;width:100%;}

/* ---------- 响应式 ---------- */
@media(max-width:991px){
  .shell{grid-template-columns:1fr;padding-top:18px;}
  .sidebar{position:relative;top:0;display:none;}
  .sidebar.mobile-open{display:block;}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:14px 16px;border-radius:0 0 var(--r-md) var(--r-md);
    box-shadow:0 24px 44px -26px rgba(100,116,139,.9);
    border-bottom:1px solid var(--c-line);
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 14px;border-radius:var(--r-sm);}
  .nav-toggle{display:block;}
  .topbar-inner{position:relative;}
  .masonry{columns:2;}
}
@media(max-width:640px){
  .hero{padding:32px 22px 28px;}
  .block{padding:24px 20px;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-stats b{font-size:1.6rem;}
  .masonry{columns:1;}
  .cta{padding:36px 22px;}
  .friend-links{padding:22px 20px;}
  .nav-links{top:calc(100% + 0px);}
}

/* --- 子页面追加 --- */
/* 本页专属的小幅补充样式，复用站点变量与类名 */
  .about-hero {
    padding: 56px 0 34px;
  }
.about-hero h1 {
    font-size: clamp(26px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.28;
    letter-spacing: -.02em;
    margin: 14px 0 16px;
    color: var(--c-text);
  }
.about-hero h1 em {
    font-style: normal;
    color: var(--c-main);
  }
.about-lede {
    max-width: 760px;
    font-size: 16px;
    line-height: 1.9;
    color: var(--c-text);
    opacity: .82;
  }
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 26px;
  }
.about-card {
    background: var(--c-card);
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    padding: 22px 22px 24px;
    box-shadow: var(--shadow-soft);
    transition: transform .25s ease, box-shadow .25s ease;
  }
.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
.about-card i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(100,116,139,.1);
    color: var(--c-main);
    font-size: 17px;
    margin-bottom: 14px;
  }
.about-card h3 {
    font-size: 16.5px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--c-text);
  }
.about-card p {
    margin: 0;
    font-size: 14px;
    line-height: 1.85;
    color: var(--c-text);
    opacity: .78;
  }
.about-points {
    list-style: none;
    padding: 0;
    margin: 18px 0 0;
    display: grid;
    gap: 14px;
  }
.about-points li {
    position: relative;
    padding-left: 26px;
    font-size: 14.5px;
    line-height: 1.85;
    color: var(--c-text);
    opacity: .84;
  }
.about-points li::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--c-accent);
  }
.about-points li strong {
    color: var(--c-text);
    font-weight: 700;
    opacity: 1;
  }
.about-note {
    margin-top: 22px;
    padding: 18px 20px;
    border-left: 3px solid var(--c-main);
    background: rgba(100,116,139,.07);
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    font-size: 14px;
    line-height: 1.85;
    color: var(--c-text);
    opacity: .85;
  }
.about-faq {
    display: grid;
    gap: 12px;
    margin-top: 20px;
  }
.about-faq details {
    background: var(--c-card);
    border: 1px solid var(--c-line);
    border-radius: var(--r-sm);
    padding: 16px 18px;
    box-shadow: var(--shadow-soft);
  }
.about-faq details[open] {
    box-shadow: var(--shadow-hover);
  }
.about-faq summary {
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--c-text);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
  }
.about-faq summary::-webkit-details-marker { display: none; }
.about-faq summary::after {
    content: "\f067";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 12px;
    color: var(--c-main);
    flex-shrink: 0;
  }
.about-faq details[open] summary::after {
    content: "\f068";
  }
.about-faq p {
    margin: 12px 0 0;
    font-size: 14px;
    line-height: 1.9;
    color: var(--c-text);
    opacity: .78;
  }
.about-grid { grid-template-columns: 1fr; }
.about-hero { padding: 36px 0 22px; }

/* --- 子页面追加 --- */
/* 顶部条 */
  .topbar {
    position:sticky;top:0;z-index:60;
    background:rgba(241,245,249,.86);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--c-line);
  }
.brand-logo span {font-size:1.2rem;line-height:1;}
.nav-links a:hover {background:rgba(100,116,139,.1);color:var(--c-text);}
/* 外壳 */
  .shell {
    max-width:1280px;margin:0 auto;padding:34px 22px 70px;
    display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);
    gap:30px;align-items:start;
  }
.side-nav a:hover {background:rgba(100,116,139,.1);color:var(--c-text);}
.side-nav a.on {background:rgba(100,116,139,.14);color:var(--c-text);font-weight:600;}
.side-card h4 {margin:0 0 10px;font-size:.94rem;font-weight:700;}
/* hero */
  .hero {
    background:var(--c-card);border-radius:var(--r-lg);padding:44px 42px;
    box-shadow:var(--shadow-soft);border:1px solid var(--c-line);
    position:relative;overflow:hidden;
  }
.hero::after {
    content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
    background:radial-gradient(circle,rgba(148,163,184,.28),transparent 68%);
    border-radius:50%;pointer-events:none;
  }
.eyebrow::before {content:"";width:24px;height:2px;background:var(--c-accent);border-radius:2px;}
.hero-stats .st {
    background:rgba(100,116,139,.07);border-radius:var(--r-sm);padding:16px 14px;
    border:1px solid var(--c-line);
  }
.hero-stats .st b {display:block;font-size:1.35rem;font-weight:800;letter-spacing:-.02em;}
.hero-stats .st small {display:block;margin-top:4px;font-size:.76rem;color:var(--c-main);}
/* 区块 */
  .block {
    background:var(--c-card);border-radius:var(--r-lg);padding:34px 36px;margin-top:26px;
    border:1px solid var(--c-line);box-shadow:var(--shadow-soft);
  }
.block-head .num {
    flex:0 0 auto;width:38px;height:38px;border-radius:12px;
    background:rgba(100,116,139,.12);color:var(--c-main);
    display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:.95rem;
  }
.block p {line-height:1.88;color:#334155;font-size:.95rem;}
.block p + p {margin-top:12px;}
/* 步骤列表 */
  .steps {list-style:none;margin:0;padding:0;counter-reset:step;}
.steps li {
    position:relative;padding:16px 18px 16px 58px;border-radius:var(--r-sm);
    background:rgba(100,116,139,.055);border:1px solid var(--c-line);
    margin-bottom:12px;counter-increment:step;
  }
.steps li::before {
    content:counter(step);
    position:absolute;left:16px;top:16px;
    width:28px;height:28px;border-radius:9px;
    background:var(--c-text);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:.82rem;font-weight:700;
  }
.steps li b {display:block;font-size:.96rem;margin-bottom:5px;}
.steps li span {font-size:.88rem;line-height:1.8;color:var(--c-main);display:block;}
/* 表格 */
  .table-wrap {overflow-x:auto;border-radius:var(--r-md);border:1px solid var(--c-line);}
table {width:100%;border-collapse:collapse;font-size:.9rem;min-width:560px;background:var(--c-card);}
tbody tr:hover td {background:rgba(100,116,139,.045);}
tbody td:first-child {font-weight:600;color:var(--c-text);white-space:nowrap;}
/* tabs */
  .tabs {display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px;}
.tab-btn.on {background:var(--c-text);color:#fff;border-color:var(--c-text);}
.tab-panel.on {display:block;animation:fade .3s ease;}
.panel-grid .pg {
    background:rgba(100,116,139,.055);border:1px solid var(--c-line);
    border-radius:var(--r-sm);padding:18px;
  }
.panel-grid .pg b {display:block;font-size:.92rem;margin-bottom:6px;}
.panel-grid .pg span {font-size:.85rem;line-height:1.8;color:var(--c-main);display:block;}
/* FAQ */
  .faq-item {
    border:1px solid var(--c-line);border-radius:var(--r-sm);
    padding:0;margin-bottom:12px;overflow:hidden;background:var(--c-card);
  }
.faq-item summary {
    padding:16px 18px;font-weight:600;font-size:.94rem;cursor:pointer;
    list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;
  }
.faq-item summary::-webkit-details-marker {display:none;}
.faq-item summary::after {
    content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
    font-size:.72rem;color:var(--c-accent);transition:.24s;flex:0 0 auto;
  }
.faq-item[open] summary::after {transform:rotate(180deg);}
.faq-item .ans {padding:0 18px 18px;font-size:.89rem;line-height:1.85;color:var(--c-main);}
/* 提示条 */
  .tip {
    border-left:3px solid var(--c-accent);background:rgba(148,163,184,.1);
    border-radius:0 var(--r-sm) var(--r-sm) 0;padding:16px 20px;margin-top:18px;
    font-size:.88rem;line-height:1.8;color:#3f4c5f;
  }
.tip b {color:var(--c-text);}
/* 页脚 */
  .footer {
    border-top:1px solid var(--c-line);background:var(--c-card);margin-top:20px;
  }
.footer-inner {
    max-width:1280px;margin:0 auto;padding:34px 22px;
    display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start;
  }
.footer-brand {font-weight:800;font-size:1.05rem;display:flex;align-items:center;gap:8px;margin-bottom:8px;}
.footer-note {font-size:.82rem;color:var(--c-main);line-height:1.8;max-width:42ch;margin:0;}
.footer-cols {display:flex;gap:44px;flex-wrap:wrap;}
.footer-cols h5 {font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--c-accent);margin:0 0 10px;font-weight:700;}
.footer-cols ul {list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px;}
.footer-cols a {font-size:.86rem;color:var(--c-main);transition:.2s;}
.footer-cols a:hover {color:var(--c-text);}
.footer-cols {gap:26px;}

/* --- 子页面追加 --- */
.rank-hero-badge {display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:var(--c-card);border:1px solid var(--c-line);font-size:.82rem;font-weight:600;color:var(--c-main);box-shadow:var(--shadow-soft);}
.rank-hero-badge i {color:var(--c-accent);}
.rank-tabs {margin-bottom:22px;}
.rank-tab-panel {display:none;}
.rank-tab-panel.is-active {display:block;}
.rank-list {display:flex;flex-direction:column;gap:14px;}
.rank-item {display:grid;grid-template-columns:64px 1fr auto;gap:18px;align-items:center;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-md);padding:16px 20px;box-shadow:var(--shadow-soft);transition:.25s ease;}
.rank-item:hover {transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.rank-no {font-family:'Inter',sans-serif;font-weight:800;font-size:1.5rem;line-height:1;color:var(--c-accent);text-align:center;}
.rank-item.top1 .rank-no,.rank-item.top2 .rank-no,.rank-item.top3 .rank-no {color:#fff;background:linear-gradient(135deg,var(--c-main),var(--c-accent));border-radius:14px;padding:12px 0;font-size:1.15rem;box-shadow:0 8px 20px -10px rgba(100,116,139,.7);}
.rank-title {font-weight:700;font-size:1.02rem;color:var(--c-text);margin:0 0 6px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.rank-meta {font-size:.82rem;color:var(--c-main);display:flex;flex-wrap:wrap;gap:14px;}
.rank-meta span {display:inline-flex;align-items:center;gap:5px;}
.rank-tag {font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--c-bg);color:var(--c-main);border:1px solid var(--c-line);}
.rank-score {text-align:right;}
.rank-score b {display:block;font-size:1.3rem;color:var(--c-text);font-weight:800;line-height:1;}
.rank-score small {font-size:.72rem;color:var(--c-main);}
.criteria-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;}
.criteria-card {background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-soft);transition:.25s ease;}
.criteria-card:hover {transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.criteria-card i {font-size:1.35rem;color:var(--c-accent);margin-bottom:12px;display:inline-block;}
.criteria-card h3 {font-size:1rem;font-weight:700;color:var(--c-text);margin:0 0 8px;}
.criteria-card p {font-size:.86rem;line-height:1.75;color:var(--c-main);margin:0;}
.note-box {background:var(--c-card);border-left:4px solid var(--c-accent);border-radius:var(--r-sm);padding:18px 22px;font-size:.88rem;line-height:1.85;color:var(--c-main);box-shadow:var(--shadow-soft);}
.note-box strong {color:var(--c-text);}
.rank-item {grid-template-columns:46px 1fr;gap:12px;padding:14px 16px;}
.rank-score {grid-column:1 / -1;text-align:left;display:flex;align-items:baseline;gap:8px;border-top:1px dashed var(--c-line);padding-top:10px;}
.rank-score b {font-size:1.05rem;}
.rank-no {font-size:1.25rem;}

/* --- 子页面追加 --- */
/* topbar */
.topbar {
  position:sticky;top:0;z-index:50;
  background:rgba(241,245,249,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.nav-links li a {
  display:inline-block;
  padding:8px 14px;border-radius:999px;
  font-size:.92rem;font-weight:500;color:var(--c-main);
  transition:.22s ease;
}
.nav-links li a:hover {background:rgba(100,116,139,.1);color:var(--c-text);}
.nav-links li a.active {
  background:var(--c-main);color:#fff;font-weight:600;
  box-shadow:0 10px 22px -14px rgba(100,116,139,.9);
}
/* shell */
.shell {
  max-width:1180px;margin:0 auto;padding:30px 22px 70px;
  display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);
  gap:28px;align-items:start;
}
/* content */
.content {min-width:0;display:flex;flex-direction:column;gap:24px;}
.block-head .ic {
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:grid;place-items:center;font-size:1rem;
  background:rgba(100,116,139,.12);color:var(--c-main);
}
.block p:last-child {margin-bottom:0;}
.block ul {margin:0 0 14px;padding-left:0;list-style:none;}
.block ul li {
  position:relative;padding-left:26px;margin-bottom:10px;
  font-size:.94rem;color:#334155;
}
.block ul li::before {
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;font-size:.78rem;color:var(--c-accent);
}
.block ul li strong {color:var(--c-text);}
.note {
  margin-top:16px;padding:14px 18px;border-radius:var(--r-sm);
  background:rgba(100,116,139,.08);border-left:3px solid var(--c-accent);
  font-size:.9rem;color:var(--c-main);
}
.tag {
  display:inline-block;font-size:.75rem;font-weight:700;
  padding:2px 9px;border-radius:999px;
  background:rgba(100,116,139,.14);color:var(--c-main);
}
.footer p {margin:0;font-size:.85rem;color:var(--c-main);max-width:380px;line-height:1.8;}
.footer-links {display:flex;flex-wrap:wrap;gap:10px 22px;font-size:.88rem;}
.footer-links a {color:var(--c-main);transition:.2s;}
.footer-links a:hover {color:var(--c-text);}
.copyright {
  max-width:1180px;margin:0 auto;padding:0 22px 30px;
  font-size:.8rem;color:var(--c-accent);
}
.nav-links li a {display:block;}