:root{
  --main:#dc2626;
  --accent:#fb923c;
  --bg:#141013;
  --text:#fef2f2;
  --panel:#1d171b;
  --line:#3a2c31;
  --muted:#b8a5a9;
  --shadow:6px 6px 0 #000;
}
*{border-radius:0 !important;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,.serif{
  font-family:"Songti SC","Noto Serif SC","Source Han Serif SC","SimSun",serif;
  font-weight:900;
  letter-spacing:.02em;
}
a{color:inherit;text-decoration:none;}
::selection{background:var(--main);color:#fff;}

/* ---------- 导航 ---------- */
.topbar{
  position:sticky;top:0;z-index:1030;
  background:rgba(20,16,19,.94);
  border-bottom:3px solid var(--main);
  backdrop-filter:blur(8px);
}
.brand-mark{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:"Songti SC","Noto Serif SC",serif;
  font-weight:900;font-size:1.35rem;color:var(--text);
  letter-spacing:.04em;white-space:nowrap;
}
.brand-mark i{color:var(--main);}
.nav-link-x{
  display:inline-block;
  padding:.4rem .85rem;
  font-size:.94rem;font-weight:600;
  color:var(--muted);
  border:2px solid transparent;
  transition:.18s;
}
.nav-link-x:hover,.nav-link-x.active{
  color:var(--text);
  border-color:var(--main);
  background:rgba(220,38,38,.14);
}
.nav-toggle{
  background:none;border:2px solid var(--main);color:var(--text);
  padding:.3rem .7rem;font-size:1.1rem;cursor:pointer;
}
.nav-collapse{display:none;}
.nav-collapse.open{display:block;}
@media(min-width:992px){
  .nav-collapse{display:block !important;}
  .nav-toggle{display:none;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:4.5rem 0 3.5rem;
  overflow:hidden;
  border-bottom:3px solid var(--line);
  background:
    radial-gradient(circle at 82% 18%,rgba(220,38,38,.30),transparent 55%),
    radial-gradient(circle at 8% 82%,rgba(251,146,60,.18),transparent 55%),
    var(--bg);
}
.hero-float{
  position:absolute;pointer-events:none;font-weight:900;
  font-family:"Songti SC","Noto Serif SC",serif;
  color:rgba(254,242,242,.05);
  user-select:none;line-height:1;
}
.hero-float.f1{top:8%;left:-1%;font-size:7rem;}
.hero-float.f2{bottom:10%;right:2%;font-size:9rem;}
.hero-float.f3{top:45%;right:30%;font-size:4rem;color:rgba(251,146,60,.09);}
.hero-float.f4{top:20%;right:12%;width:110px;height:110px;border:3px solid rgba(220,38,38,.28);transform:rotate(18deg);}
@keyframes drift{
  0%,100%{transform:translateY(0) rotate(0);}
  50%{transform:translateY(-16px) rotate(3deg);}
}
.hero-float.f1{animation:drift 9s ease-in-out infinite;}
.hero-float.f3{animation:drift 11s ease-in-out infinite reverse;}
.hero-eyebrow{
  display:inline-block;
  font-size:.78rem;font-weight:800;letter-spacing:.22em;
  color:var(--accent);
  border:2px solid var(--accent);
  padding:.25rem .8rem;
  margin-bottom:1.4rem;
  text-transform:uppercase;
}
.hero-title{
  font-size:clamp(2.1rem,6vw,4.6rem);
  line-height:1.08;
  margin-bottom:1.1rem;
}
.grad-text{
  background:linear-gradient(96deg,#fb923c 0%,#dc2626 48%,#f472b6 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero-lead{
  color:var(--muted);font-size:1.02rem;max-width:640px;
}
.hero-stats{display:flex;flex-wrap:wrap;gap:1.4rem;margin-top:2rem;}
.hero-stat{
  border-left:4px solid var(--main);
  padding-left:.9rem;
}
.hero-stat b{
  display:block;font-size:2rem;line-height:1;
  font-family:"Inter",sans-serif;font-weight:900;color:var(--accent);
}
.hero-stat span{font-size:.82rem;color:var(--muted);letter-spacing:.08em;}
.hero-shot{
  border:3px solid var(--line);
  box-shadow:var(--shadow);
  overflow:hidden;position:relative;
  background:var(--panel);
  margin-top:2rem;
}
.hero-shot img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;}
.hero-shot-cap{
  position:absolute;left:0;bottom:0;right:0;
  background:linear-gradient(to top,rgba(20,16,19,.96),rgba(20,16,19,0));
  padding:1.6rem 1.1rem .9rem;
  font-weight:700;font-size:.95rem;
}

/* ---------- 通用区块 ---------- */
.sect{padding:3.6rem 0;}
.sect-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;
  border-bottom:3px solid var(--main);
  padding-bottom:.8rem;margin-bottom:2.2rem;
}
.sect-head h2{
  font-size:clamp(1.4rem,3.4vw,2.1rem);
  margin:0;
}
.sect-head h2 small{
  display:block;font-family:"Inter",sans-serif;
  font-weight:600;font-size:.72rem;letter-spacing:.26em;
  color:var(--accent);margin-top:.35rem;text-transform:uppercase;
}
.sect-more{
  font-size:.84rem;font-weight:700;color:var(--muted);
  border:2px solid var(--line);padding:.3rem .8rem;transition:.18s;
}
.sect-more:hover{color:var(--text);border-color:var(--main);background:rgba(220,38,38,.14);}

/* ---------- 海报网格 ---------- */
.poster-grid{
  display:grid;gap:1.15rem;
  grid-template-columns:repeat(2,minmax(0,1fr));
  width:100%;
}
@media(min-width:576px){.poster-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
@media(min-width:768px){.poster-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
@media(min-width:1200px){.poster-grid{grid-template-columns:repeat(6,minmax(0,1fr));}}

.pcard{
  background:var(--panel);
  border:2px solid var(--line);
  box-shadow:4px 4px 0 #000;
  transition:transform .22s,border-color .22s,box-shadow .22s;
  position:relative;
  display:block;
}
.pcard:hover{
  transform:translate(-3px,-3px);
  border-color:var(--main);
  box-shadow:7px 7px 0 #000;
}
.pcard .thumb{position:relative;overflow:hidden;background:#0d0a0c;}
.pcard .thumb img{
  width:100%;aspect-ratio:2/3;object-fit:cover;display:block;
  transition:transform .5s ease;
}
.pcard:hover .thumb img{transform:scale(1.09);}
.thumb-mask{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(20,16,19,.96) 0%,rgba(20,16,19,.15) 55%,transparent 100%);
  opacity:0;transition:opacity .3s;
  display:flex;align-items:flex-end;padding:.7rem;
  font-size:.76rem;color:var(--text);line-height:1.5;
}
.pcard:hover .thumb-mask{opacity:1;}
.pcard .meta{padding:.55rem .65rem .7rem;}
.pcard .meta h3{
  font-size:.92rem;line-height:1.35;margin:0 0 .25rem;
  font-family:"Inter","Noto Sans SC",sans-serif;font-weight:700;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.pcard .meta p{
  margin:0;font-size:.72rem;color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.badge-tag{
  display:inline-block;font-size:.66rem;font-weight:800;
  padding:.05rem .4rem;margin-right:.3rem;
  background:var(--main);color:#fff;letter-spacing:.04em;
}
.badge-tag.alt{background:var(--accent);color:#2a1508;}

/* ---------- 分类胶囊 ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.8rem;}
.pill{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.35rem .95rem;font-size:.85rem;font-weight:700;
  border:2px solid var(--line);color:var(--muted);
  background:transparent;transition:.18s;
}
.pill:hover{border-color:var(--accent);color:var(--accent);}
.pill.on{background:var(--main);border-color:var(--main);color:#fff;}

/* ---------- 分区块壳 ---------- */
.cat-block{
  border-top:2px solid var(--line);
  padding-top:2rem;margin-top:2.4rem;
}
.cat-block:first-of-type{border-top:none;padding-top:0;margin-top:0;}
.cat-title{
  display:flex;align-items:center;gap:.75rem;
  font-size:1.2rem;margin-bottom:1.2rem;
}
.cat-title i{
  width:34px;height:34px;display:grid;place-items:center;
  background:var(--main);color:#fff;font-size:.95rem;
  box-shadow:3px 3px 0 #000;
}
.cat-title em{
  font-style:normal;font-size:.76rem;font-weight:600;
  color:var(--muted);font-family:"Inter",sans-serif;
}

/* ---------- 周榜 ---------- */
.rank-list{display:grid;gap:.85rem;}
.rank-item{
  display:grid;grid-template-columns:56px 1fr auto;
  align-items:center;gap:1rem;
  background:var(--panel);border:2px solid var(--line);
  padding:.8rem 1rem;transition:.2s;
}
.rank-item:hover{border-color:var(--main);transform:translateX(4px);}
.rank-no{
  font-family:"Inter",sans-serif;font-weight:900;font-size:1.5rem;
  line-height:1;text-align:center;
  border:2px solid var(--line);padding:.35rem 0;
}
.rank-no.gold{background:#b8860b;color:#fff8e1;border-color:#d4a017;}
.rank-no.silver{background:#8e9aa6;color:#f6fafd;border-color:#a9b4bf;}
.rank-no.bronze{background:#8c5a2b;color:#ffefe0;border-color:#a86f3a;}
.rank-body h3{font-size:1rem;margin:0 0 .15rem;font-family:"Inter","Noto Sans SC",sans-serif;font-weight:700;}
.rank-body p{margin:0;font-size:.78rem;color:var(--muted);}
.rank-heat{
  font-family:"Inter",sans-serif;font-weight:800;font-size:.9rem;
  color:var(--accent);white-space:nowrap;
}
@media(max-width:575px){
  .rank-item{grid-template-columns:44px 1fr;row-gap:.3rem;}
  .rank-heat{grid-column:2;}
}

/* ---------- 即将上线 ---------- */
.soon-card{
  border:2px solid var(--line);background:var(--panel);
  box-shadow:4px 4px 0 #000;padding:1.1rem 1rem;
  height:100%;transition:.2s;
}
.soon-card:hover{border-color:var(--accent);transform:translateY(-4px);}
.soon-date{
  font-family:"Inter",sans-serif;font-weight:900;
  font-size:1.7rem;line-height:1;color:var(--main);
}
.soon-date small{display:block;font-size:.68rem;font-weight:700;color:var(--muted);letter-spacing:.18em;margin-top:.3rem;}
.soon-card h3{font-size:1rem;margin:.8rem 0 .3rem;font-family:"Inter","Noto Sans SC",sans-serif;font-weight:700;}
.soon-card p{margin:0;font-size:.78rem;color:var(--muted);}

/* ---------- 特色图标列表 ---------- */
.feature-item{
  display:flex;gap:.9rem;align-items:flex-start;
  border:2px solid var(--line);background:var(--panel);
  padding:1rem;height:100%;
}
.feature-item i{
  color:var(--main);font-size:1.25rem;margin-top:.15rem;
}
.feature-item h4{font-size:.98rem;margin:0 0 .25rem;font-family:"Inter","Noto Sans SC",sans-serif;font-weight:800;}
.feature-item p{margin:0;font-size:.82rem;color:var(--muted);}

/* ---------- 手风琴 ---------- */
.acc{border:2px solid var(--line);}
.acc + .acc{border-top:none;}
.acc-btn{
  width:100%;text-align:left;background:var(--panel);color:var(--text);
  border:none;padding:1rem 1.1rem;font-weight:700;font-size:.95rem;
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
  cursor:pointer;transition:.18s;
}
.acc-btn:hover{background:#241c21;color:var(--accent);}
.acc-btn i{transition:transform .25s;color:var(--main);}
.acc-btn[aria-expanded="true"] i{transform:rotate(180deg);}
.acc-body{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  background:#181318;
}
.acc-body p{margin:0;padding:0 1.1rem 1.05rem;font-size:.87rem;color:var(--muted);}

/* ---------- 友链 ---------- */
.friend-box{
  border:3px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
  padding:1.6rem 1.3rem;
}
.friend-box h2{font-size:1.05rem;margin-bottom:.9rem;letter-spacing:.05em;}
.friend-box h2 i{color:var(--accent);margin-right:.45rem;}
.friend-links{font-size:.86rem;color:var(--muted);line-height:2;word-break:break-all;}

/* ---------- 页脚 ---------- */
footer.site-foot{
  border-top:3px solid var(--main);
  background:#100c0f;
  padding:2.8rem 0 1.6rem;
  margin-top:1rem;
}
.foot-brand{
  font-family:"Songti SC","Noto Serif SC",serif;
  font-weight:900;font-size:1.3rem;margin-bottom:.6rem;
}
.foot-brand i{color:var(--main);margin-right:.4rem;}
.foot-desc{font-size:.84rem;color:var(--muted);max-width:520px;}
.foot-links{display:flex;flex-wrap:wrap;gap:.4rem 1.3rem;font-size:.86rem;}
.foot-links a{color:var(--muted);transition:.18s;}
.foot-links a:hover{color:var(--accent);}
.foot-bottom{
  border-top:2px solid var(--line);
  margin-top:1.8rem;padding-top:1.1rem;
  font-size:.78rem;color:#8d7c80;
  display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;justify-content:space-between;
}

/* ---------- 回到顶部 ---------- */
#toTop{
  position:fixed;right:18px;bottom:22px;z-index:1060;
  width:48px;height:48px;display:grid;place-items:center;
  background:var(--main);color:#fff;border:2px solid #000;
  box-shadow:4px 4px 0 #000;font-size:1.05rem;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.28s;
}
#toTop.show{opacity:1;visibility:visible;transform:translateY(0);}
#toTop:hover{background:var(--accent);color:#2a1508;}

/* ---------- 滚动渐显 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .hero-float{animation:none;}
  html{scroll-behavior:auto;}
}

/* --- 子页面追加 --- */
.about-block {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.6rem 1.5rem;
    height: 100%;
    box-shadow: var(--shadow);
  }
.about-block h3 {
    font-size: 1.12rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: .75rem;
    letter-spacing: .2px;
  }
.about-block p {
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.85;
    margin-bottom: 0;
  }
.about-block .ab-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: rgba(220,38,38,.16);
    color: var(--main);
    font-size: 1rem;
    margin-bottom: .9rem;
  }
.about-num {
    font-family: "Inter",sans-serif;
    font-weight: 900;
    font-size: 1.9rem;
    color: var(--accent);
    line-height: 1;
  }
.about-num span {
    font-size: .8rem;
    color: var(--muted);
    font-weight: 500;
    margin-left: .35rem;
  }
.about-list {
    list-style: none;
    padding: 0;
    margin: 0;
  }
.about-list li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.85;
    margin-bottom: .55rem;
  }
.about-list li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: .15rem;
    font-size: .7rem;
    color: var(--main);
  }
.about-quote {
    border-left: 3px solid var(--main);
    background: rgba(220,38,38,.07);
    border-radius: 0 12px 12px 0;
    padding: 1.1rem 1.3rem;
    color: var(--text);
    font-size: 1rem;
    line-height: 1.9;
  }
.about-quote strong { color: var(--accent); }
.about-tag {
    display:inline-block;
    padding:.28rem .8rem;
    margin:.2rem .35rem .2rem 0;
    font-size:.78rem;
    color:var(--accent);
    background:rgba(251,146,60,.1);
    border:1px solid rgba(251,146,60,.28);
    border-radius:999px;
  }

/* --- 子页面追加 --- */
.legal-wrap { max-width: 900px; margin: 0 auto; }
.legal-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 26px 26px 22px;
    box-shadow: var(--shadow);
    margin-bottom: 22px;
  }
.legal-card h2 {
    font-size: 1.28rem;
    font-weight: 800;
    margin: 0 0 14px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
  }
.legal-card h2 i { color: var(--main); font-size: 1.05rem; }
.legal-card p, .legal-card li {
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.85;
    margin-bottom: 10px;
  }
.legal-card strong { color: var(--text); font-weight: 600; }
.legal-card ul { padding-left: 20px; margin: 0 0 6px; }
.legal-card li::marker { color: var(--accent); }
.legal-note {
    background: rgba(220,38,38,.08);
    border-left: 3px solid var(--main);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.8;
  }
.legal-note strong { color: var(--accent); }
.legal-toc {
    display: flex; flex-wrap: wrap; gap: 10px;
    margin-bottom: 24px;
  }
.legal-toc a {
    display: inline-block;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(251,146,60,.1);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: .84rem;
    text-decoration: none;
    transition: .2s;
  }
.legal-toc a:hover { color: var(--text); border-color: var(--accent); background: rgba(251,146,60,.2); }
.legal-update {
    color: var(--muted);
    font-size: .82rem;
    letter-spacing: .04em;
    margin-bottom: 18px;
  }
.legal-update i { color: var(--accent); margin-right: 6px; }

/* --- 子页面追加 --- */
.guide-wrap { padding: 48px 0 72px; }
.guide-card {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 26px 24px;
      box-shadow: var(--shadow);
      height: 100%;
    }
.guide-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text);
    }
.guide-card p, .guide-card li {
      color: var(--muted);
      font-size: .95rem;
      line-height: 1.75;
      margin-bottom: 8px;
    }
.guide-card ul { padding-left: 18px; margin: 0; }
.guide-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 30px; height: 30px;
      border-radius: 8px;
      background: var(--main);
      color: #fff;
      font-weight: 800;
      font-size: .9rem;
      margin-right: 10px;
      flex: 0 0 auto;
      box-shadow: 3px 3px 0 #000;
    }
.step-line { display: flex; align-items: flex-start; margin-bottom: 18px; }
.step-line:last-child { margin-bottom: 0; }
.step-line strong { color: var(--text); display: block; margin-bottom: 2px; }
.step-line span { color: var(--muted); font-size: .93rem; line-height: 1.7; }
.tip-box {
      background: rgba(220,38,38,.08);
      border-left: 4px solid var(--main);
      border-radius: 8px;
      padding: 16px 18px;
      margin-top: 20px;
    }
.tip-box p { margin: 0; color: var(--muted); font-size: .93rem; line-height: 1.75; }
.tip-box strong { color: var(--accent); }
.faq-item {
      border-bottom: 1px solid var(--line);
      padding: 18px 0;
    }
.faq-item:last-child { border-bottom: none; }
.faq-q {
      font-weight: 700;
      color: var(--text);
      font-size: 1rem;
      margin-bottom: 6px;
      display: flex;
      gap: 10px;
    }
.faq-q i { color: var(--main); margin-top: 3px; }
.faq-a { color: var(--muted); font-size: .94rem; line-height: 1.8; padding-left: 26px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip {
      background: rgba(251,146,60,.12);
      color: var(--accent);
      border: 1px solid rgba(251,146,60,.3);
      border-radius: 999px;
      padding: 4px 12px;
      font-size: .82rem;
      font-weight: 600;
    }
.guide-cta {
      margin-top: 40px;
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 30px 24px;
      box-shadow: var(--shadow);
      text-align: center;
    }
.guide-cta h2 { font-size: 1.35rem; font-weight: 800; margin-bottom: 10px; }
.guide-cta p { color: var(--muted); margin-bottom: 18px; }
.btn-x {
      display: inline-block;
      background: var(--main);
      color: #fff;
      font-weight: 700;
      padding: 11px 26px;
      border-radius: 10px;
      text-decoration: none;
      box-shadow: 4px 4px 0 #000;
      transition: transform .15s ease, box-shadow .15s ease;
      margin: 0 6px 10px;
    }
.btn-x:hover { transform: translate(-2px,-2px); box-shadow: 6px 6px 0 #000; color: #fff; }
.btn-x.alt { background: transparent; border: 1px solid var(--line); color: var(--text); }
.btn-x.alt:hover { border-color: var(--accent); color: var(--accent); }
.guide-wrap { padding: 28px 0 48px; }
.guide-card { padding: 20px 18px; }

/* --- 子页面追加 --- */
/* 本页专属少量样式，全部基于站点变量 */
.rank-hero {
  padding:64px 0 40px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 320px at 12% -10%, rgba(220,38,38,.22), transparent 60%),
    radial-gradient(700px 300px at 88% 0%, rgba(251,146,60,.14), transparent 62%);
}
.rank-hero .hero-eyebrow {
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);font-weight:700;
  border:1px solid var(--line);background:rgba(0,0,0,.35);
  padding:6px 12px;border-radius:999px;margin-bottom:18px;
}
.rank-hero h1 {
  font-weight:900;line-height:1.15;letter-spacing:-.02em;
  font-size:clamp(1.9rem,4.2vw,3.1rem);
}
.rank-hero p.lead-x {
  color:var(--muted);max-width:760px;margin-top:16px;font-size:1.02rem;line-height:1.85;
}
.rank-meta {
  display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;
}
.rank-meta .pill {
  background:var(--panel);border:1px solid var(--line);color:var(--muted);
  padding:7px 14px;border-radius:999px;font-size:.82rem;font-weight:600;
}
.sect:last-of-type {border-bottom:0;}
.sect-head h2 .bar {
  display:inline-block;width:6px;height:26px;border-radius:2px;
  background:linear-gradient(180deg,var(--main),var(--accent));
  box-shadow:var(--shadow);
}
.sect-head p {color:var(--muted);margin:10px 0 0;line-height:1.85;max-width:820px;}
/* 榜单卡片 */
.board-grid {display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.board-grid {grid-template-columns:1fr;}
.board-card {
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:24px 22px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .18s ease,border-color .18s ease;
}
.board-card:hover {transform:translateY(-4px);border-color:var(--main);}
.board-card .ico {
  width:44px;height:44px;border-radius:11px;display:grid;place-items:center;
  font-size:1.15rem;color:#fff;margin-bottom:14px;
  background:linear-gradient(135deg,var(--main),var(--accent));
}
.board-card h3 {font-size:1.08rem;font-weight:800;margin:0 0 8px;}
.board-card p {color:var(--muted);font-size:.9rem;line-height:1.8;margin:0 0 14px;}
.weight-row {display:flex;flex-direction:column;gap:9px;margin-top:6px;}
.weight-item {font-size:.8rem;color:var(--muted);}
.weight-item .lbl {display:flex;justify-content:space-between;margin-bottom:4px;font-weight:600;}
.weight-item .track {height:7px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;}
.weight-item .fill {height:100%;border-radius:999px;background:linear-gradient(90deg,var(--main),var(--accent));}
/* 算法表格 */
.formula-wrap {
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:6px 20px 18px;box-shadow:var(--shadow);overflow-x:auto;
}
table.algo {width:100%;border-collapse:collapse;font-size:.9rem;min-width:620px;}
table.algo th {
  text-align:left;color:var(--accent);font-size:.76rem;letter-spacing:.08em;
  text-transform:uppercase;padding:16px 12px 12px;border-bottom:1px solid var(--line);font-weight:700;
}
table.algo td {
  padding:14px 12px;border-bottom:1px solid rgba(58,44,49,.55);color:var(--text);vertical-align:top;line-height:1.7;
}
table.algo tr:last-child td {border-bottom:0;}
table.algo td.muted {color:var(--muted);}
table.algo code {
  background:rgba(220,38,38,.14);color:var(--accent);padding:2px 7px;border-radius:5px;
  font-size:.84rem;font-family:ui-monospace,Menlo,Consolas,monospace;
}
/* 步骤时间线 */
.timeline {position:relative;padding-left:30px;}
.timeline::before {
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--main),var(--accent),var(--line));
}
.tl-item {position:relative;padding-bottom:26px;}
.tl-item:last-child {padding-bottom:0;}
.tl-item::before {
  content:"";position:absolute;left:-27px;top:5px;width:12px;height:12px;border-radius:50%;
  background:var(--bg);border:2px solid var(--main);box-shadow:0 0 0 4px rgba(220,38,38,.14);
}
.tl-item h3 {font-size:1rem;font-weight:800;margin:0 0 6px;}
.tl-item p {color:var(--muted);font-size:.9rem;line-height:1.85;margin:0;}
/* FAQ */
.faq-item {
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:20px 22px;margin-bottom:14px;
}
.faq-item h3 {font-size:.98rem;font-weight:800;margin:0 0 8px;color:var(--text);display:flex;gap:10px;align-items:flex-start;}
.faq-item h3 i {color:var(--accent);margin-top:3px;font-size:.85rem;}
.faq-item p {color:var(--muted);font-size:.9rem;line-height:1.85;margin:0;}
.note-box {
  background:linear-gradient(135deg,rgba(220,38,38,.14),rgba(251,146,60,.08));
  border:1px solid var(--line);border-left:4px solid var(--main);
  border-radius:12px;padding:20px 22px;margin-top:26px;
}
.note-box p {margin:0;color:var(--text);font-size:.92rem;line-height:1.85;}
.note-box strong {color:var(--accent);}
.cta-strip {
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:24px 26px;box-shadow:var(--shadow);margin-top:8px;
}
.cta-strip p {margin:0;color:var(--muted);font-size:.92rem;line-height:1.8;}
.cta-strip .btns {display:flex;gap:12px;flex-wrap:wrap;}
.btn-ghost {
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--line);color:var(--text);
  font-weight:700;font-size:.88rem;padding:11px 20px;border-radius:10px;text-decoration:none;
  transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.btn-ghost:hover {border-color:var(--main);color:var(--accent);transform:translateY(-2px);}
/* 导航基础样式兜底（防止样式表未覆盖） */
.topbar {background:rgba(20,16,19,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1030;backdrop-filter:blur(10px);}
.brand-mark:hover {color:var(--text);}
.nav-link-x:hover {color:var(--text);background:rgba(255,255,255,.05);}
footer {background:var(--panel);border-top:1px solid var(--line);color:var(--muted);font-size:.88rem;}
footer a {color:var(--muted);text-decoration:none;}
footer a:hover {color:var(--accent);}

/* --- 子页面追加 --- */
.map-card {background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px 22px 18px;box-shadow:var(--shadow);height:100%;}
.map-card h3 {font-size:1.05rem;font-weight:800;letter-spacing:.02em;margin:0 0 4px;color:var(--text);display:flex;align-items:center;gap:10px;}
.map-card h3 i {color:var(--main);font-size:1rem;}
.map-card .map-sub {color:var(--muted);font-size:.82rem;margin:0 0 14px;}
.map-links {list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.map-links li a {display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-radius:9px;color:var(--text);text-decoration:none;font-size:.92rem;border:1px solid transparent;transition:.18s;}
.map-links li a:hover {background:rgba(220,38,38,.12);border-color:var(--line);color:#fff;}
.map-links li a span.path {color:var(--muted);font-size:.76rem;font-family:"Inter",monospace;}
.map-links li a:hover span.path {color:var(--accent);}
.map-note {background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--main);border-radius:12px;padding:18px 20px;color:var(--muted);font-size:.9rem;line-height:1.85;}
.map-note strong {color:var(--text);}
.map-fig {margin:24px 0 0;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);}
.map-fig img {display:block;width:100%;height:auto;}
.map-fig figcaption {padding:12px 16px;background:var(--panel);color:var(--muted);font-size:.82rem;border-top:1px solid var(--line);}
.faq-item h4 {font-size:.95rem;font-weight:700;color:var(--text);margin:0 0 6px;display:flex;gap:9px;align-items:flex-start;}
.faq-item h4 i {color:var(--accent);margin-top:3px;font-size:.8rem;}