:root{
  --brand:#22d3ee;
  --accent:#fb923c;
  --bg:#0f172a;
  --ink:#e2e8f0;
  --line:rgba(226,232,240,.16);
  --line-strong:rgba(226,232,240,.30);
  --panel:#131c31;
  --panel-2:#16203a;
  --muted:#93a4bd;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.heavy{
  font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.15;
  margin:0;
}
a{color:inherit;text-decoration:none;}
.mono{font-family:var(--mono);letter-spacing:0;}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px;}

/* ============ NAV ============ */
.navbar-x{
  position:sticky;top:0;z-index:900;
  background:rgba(15,23,42,0);
  border-bottom:1px solid transparent;
  transition:background .35s ease,border-color .35s ease,backdrop-filter .35s ease;
}
.navbar-x.solid{
  background:rgba(15,23,42,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.navbar-x .inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;height:70px;
}
.brand{
  font-weight:900;font-size:1.28rem;letter-spacing:-.01em;
  display:flex;align-items:center;gap:9px;white-space:nowrap;
}
.brand i{color:var(--brand);font-size:1.05rem;}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.nav-links a{
  font-size:.9rem;font-weight:500;color:var(--muted);
  padding:8px 13px;border-radius:999px;
  border:1px solid transparent;
  transition:color .2s,border-color .2s,background .2s;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);border-color:var(--line-strong);}
.nav-links a.active{color:var(--bg);background:var(--brand);border-color:var(--brand);font-weight:700;}
.nav-toggle{
  display:none;background:none;border:1px solid var(--line-strong);
  color:var(--ink);border-radius:9px;width:42px;height:38px;
}
@media(max-width:860px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;left:0;right:0;top:70px;
    background:rgba(15,23,42,.98);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 16px 18px;display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{border-radius:8px;padding:12px 10px;}
}

/* ============ HERO split ============ */
.hero{
  display:grid;grid-template-columns:1fr 1fr;
  min-height:calc(100vh - 70px);
  border-bottom:1px solid var(--line);
}
.hero-left,.hero-right{padding:74px 56px;display:flex;flex-direction:column;justify-content:center;}
.hero-left{border-right:1px solid var(--line);}
.hero-right{background:var(--panel);}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;min-height:auto;}
  .hero-left,.hero-right{padding:52px 22px;}
  .hero-left{border-right:none;border-bottom:1px solid var(--line);}
}
.eyebrow{
  font-family:var(--mono);font-size:.76rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent);margin-bottom:22px;
}
.hero h1{font-size:clamp(2.1rem,5vw,3.5rem);}
.hero h1 .hl{color:var(--brand);}
.hero-sub{color:var(--muted);font-size:1.02rem;max-width:46ch;margin-top:22px;}
.stat-row{display:flex;flex-wrap:wrap;gap:38px;margin-top:46px;}
.stat-num{
  font-family:var(--mono);font-size:clamp(1.9rem,4.2vw,2.7rem);
  font-weight:700;color:var(--ink);line-height:1;
}
.stat-num .u{color:var(--brand);font-size:.6em;margin-left:3px;}
.stat-lbl{font-size:.8rem;color:var(--muted);margin-top:8px;letter-spacing:.06em;}

.hero-list{list-style:none;padding:0;margin:0;}
.hero-list li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
  font-size:.95rem;
}
.hero-list li:first-child{padding-top:0;}
.hero-list .idx{
  font-family:var(--mono);color:var(--accent);font-weight:700;font-size:.9rem;
  min-width:28px;padding-top:2px;
}
.hero-list strong{display:block;font-weight:700;margin-bottom:4px;}
.hero-list span.d{color:var(--muted);font-size:.9rem;}

/* ============ SECTION SHELL ============ */
.sec{padding:86px 0;border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:46px;}
.sec-tag{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand);margin-bottom:14px;display:block;
}
.sec-head h2{font-size:clamp(1.6rem,3.4vw,2.35rem);}
.sec-head p{color:var(--muted);margin-top:16px;font-size:1rem;}

/* ============ LONGFORM ============ */
.longform{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;}
@media(max-width:900px){.longform{grid-template-columns:1fr;gap:36px;}}
.longform p{margin:0 0 20px;color:#cbd5e1;}
.longform p.lead{font-size:1.1rem;color:var(--ink);font-weight:500;}
.note-box{
  border:1px solid var(--line);border-left:3px solid var(--accent);
  padding:24px 26px;background:var(--panel);
}
.note-box h4{font-size:1.02rem;margin-bottom:12px;}
.note-box p{font-size:.92rem;color:var(--muted);margin:0 0 12px;}
.note-box p:last-child{margin-bottom:0;}

/* ============ TABLE ============ */
.tbl-scroll{overflow-x:auto;border:1px solid var(--line);}
table.cmp{width:100%;border-collapse:collapse;min-width:720px;font-size:.92rem;}
table.cmp th,table.cmp td{
  padding:17px 20px;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.cmp thead th{
  font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:500;background:var(--panel);
}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp td:first-child{font-weight:700;white-space:nowrap;}
table.cmp td.dim{color:var(--muted);}
.pill{
  display:inline-block;font-family:var(--mono);font-size:.74rem;
  padding:2px 9px;border:1px solid var(--line-strong);border-radius:999px;color:var(--brand);
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
@media(max-width:860px){.faq-grid{grid-template-columns:1fr;}}
.faq-item{border:1px solid var(--line);padding:26px 28px;background:var(--panel);}
.faq-item h3{font-size:1.03rem;margin-bottom:12px;display:flex;gap:11px;}
.faq-item h3 i{color:var(--accent);font-size:.95rem;padding-top:5px;}
.faq-item p{margin:0;color:var(--muted);font-size:.93rem;}

/* ============ FEATURE CARD GRID ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
@media(max-width:920px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:620px){.card-grid{grid-template-columns:1fr;}}
.f-card{
  border:1px solid var(--line);padding:32px 28px;background:var(--panel);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  display:flex;flex-direction:column;
}
.f-card:hover{
  transform:translateY(-7px);
  box-shadow:0 16px 34px rgba(0,0,0,.55);
  border-color:var(--brand);
}
.f-card .ic{
  width:44px;height:44px;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);margin-bottom:20px;font-size:1.05rem;
}
.f-card h3{font-size:1.08rem;margin-bottom:12px;}
.f-card p{margin:0;color:var(--muted);font-size:.92rem;}
.f-card .meta{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:.76rem;color:var(--accent);letter-spacing:.08em;
}

/* ============ STEPS ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.steps{grid-template-columns:1fr;}}
.step{
  padding:32px 26px;border-right:1px solid var(--line);
}
.step:last-child{border-right:none;}
@media(max-width:900px){
  .step:nth-child(2n){border-right:none;}
  .step:nth-child(-n+2){border-bottom:1px solid var(--line);}
}
@media(max-width:560px){
  .step{border-right:none;border-bottom:1px solid var(--line);}
  .step:last-child{border-bottom:none;}
}
.step .n{font-family:var(--mono);font-size:1.5rem;font-weight:700;color:var(--brand);}
.step h4{font-size:1rem;margin:14px 0 9px;}
.step p{margin:0;font-size:.89rem;color:var(--muted);}

/* ============ POSTERS ============ */
.poster-grid{
  display:grid;grid-template-columns:repeat(6,1fr);gap:18px;
}
@media(max-width:1100px){.poster-grid{grid-template-columns:repeat(4,1fr);}}
@media(max-width:760px){.poster-grid{grid-template-columns:repeat(3,1fr);gap:14px;}}
@media(max-width:480px){.poster-grid{grid-template-columns:repeat(2,1fr);gap:12px;}}
.poster{
  width:100%;border:1px solid var(--line);background:var(--panel);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
  display:flex;flex-direction:column;
}
.poster:hover{
  transform:translateY(-6px);
  box-shadow:0 14px 30px rgba(0,0,0,.6);
  border-color:var(--accent);
}
.poster img{
  width:100%;aspect-ratio:2/3;object-fit:cover;display:block;
  border-bottom:1px solid var(--line);
  background:var(--panel-2);
}
.poster .cap{padding:11px 12px 13px;}
.poster .cap b{display:block;font-size:.85rem;font-weight:700;line-height:1.35;}
.poster .cap em{
  display:block;font-style:normal;font-family:var(--mono);
  font-size:.7rem;color:var(--muted);margin-top:5px;letter-spacing:.04em;
}
.group-title{
  display:flex;align-items:center;gap:14px;margin:52px 0 22px;
}
.group-title h3{font-size:1.2rem;white-space:nowrap;}
.group-title .ln{flex:1;height:1px;background:var(--line);}
.group-title span{
  font-family:var(--mono);font-size:.74rem;color:var(--accent);letter-spacing:.12em;
}
.group-title:first-of-type{margin-top:0;}

/* ============ CTA ============ */
.cta{
  display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);
}
@media(max-width:860px){.cta{grid-template-columns:1fr;}}
.cta-l,.cta-r{padding:56px 48px;}
@media(max-width:860px){.cta-l,.cta-r{padding:42px 24px;}}
.cta-l{background:var(--panel);border-right:1px solid var(--line);}
@media(max-width:860px){.cta-l{border-right:none;border-bottom:1px solid var(--line);}}
.cta-l h2{font-size:clamp(1.5rem,3.2vw,2.1rem);margin-bottom:18px;}
.cta-l p{color:var(--muted);margin:0 0 26px;}
.btn-x{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;font-weight:700;font-size:.94rem;
  border:1px solid var(--brand);color:var(--bg);background:var(--brand);
  transition:background .2s,color .2s,border-color .2s;
}
.btn-x:hover{background:transparent;color:var(--brand);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;font-weight:600;font-size:.94rem;
  border:1px solid var(--line-strong);color:var(--ink);background:transparent;
  transition:border-color .2s,color .2s;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.cta-r ul{list-style:none;padding:0;margin:0;}
.cta-r li{
  display:flex;justify-content:space-between;gap:16px;
  padding:15px 0;border-bottom:1px solid var(--line);font-size:.92rem;
}
.cta-r li:first-child{padding-top:0;}
.cta-r li span:last-child{font-family:var(--mono);color:var(--brand);}

/* ============ FOOTER ============ */
footer{padding:62px 0 36px;background:var(--panel);}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:38px;}
@media(max-width:820px){.f-grid{grid-template-columns:1fr;gap:30px;}}
.f-grid h5{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);font-weight:500;margin-bottom:16px;
}
.f-grid p{color:var(--muted);font-size:.9rem;margin:0 0 12px;}
.f-grid ul{list-style:none;padding:0;margin:0;}
.f-grid ul li{margin-bottom:10px;}
.f-grid ul a{color:#cbd5e1;font-size:.9rem;transition:color .2s;}
.f-grid ul a:hover{color:var(--brand);}
.friend-links{
  margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
}
.friend-links h5{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);font-weight:500;margin-bottom:14px;
}
.friend-links p{color:var(--muted);font-size:.88rem;margin:0;word-break:break-all;}
.copy{
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.83rem;color:var(--muted);
}
.copy .mono{color:var(--muted);}

/* --- 子页面追加 --- */
/* 本页专属少量样式，仅做补充，配色沿用站点变量 */
  .about-hero .hero-sub { max-width: 60ch; }
.about-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:18px; }
.about-card {
    background: var(--panel);
    border:1px solid var(--line);
    border-radius:14px;
    padding:22px 20px;
    transition:border-color .2s ease, transform .2s ease;
  }
.about-card:hover { border-color: var(--line-strong); transform:translateY(-3px); }
.about-card i { color: var(--brand); font-size:20px; margin-bottom:10px; display:block; }
.about-card h3 { font-size:16px; font-weight:700; color:var(--ink); margin:0 0 8px; }
.about-card p { font-size:14px; line-height:1.75; color:var(--muted); margin:0; }
.tl { list-style:none; padding:0; margin:0; }
.tl li {
    position:relative; padding:0 0 22px 26px;
    border-left:1px solid var(--line); margin-left:6px;
  }
.tl li:last-child { padding-bottom:0; border-left-color:transparent; }
.tl li::before {
    content:""; position:absolute; left:-5.5px; top:4px;
    width:10px; height:10px; border-radius:50%;
    background: var(--brand); box-shadow:0 0 0 4px rgba(34,211,238,.14);
  }
.tl .tl-t { font-family:var(--mono); font-size:12.5px; color:var(--accent); letter-spacing:.04em; }
.tl .tl-d { font-size:14.5px; color:var(--ink); line-height:1.7; margin-top:4px; }
.kw { color: var(--brand); font-weight:600; }
.cmp-table th, .cmp-table td { white-space:nowrap; }
.about-card { padding:18px 16px; }

/* --- 子页面追加 --- */
/* 本页少量专属微调，不覆盖全局变量 */
    .guide-steps .step-item {
      border-left: 3px solid var(--brand);
      padding-left: 1.25rem;
      margin-bottom: 1.75rem;
    }
.guide-steps .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--brand);
      color: #0f172a;
      font-weight: 800;
      font-size: .85rem;
      margin-right: .5rem;
    }
.pill-row {
      display: flex;
      flex-wrap: wrap;
      gap: .5rem;
      margin-top: .75rem;
    }
.pill-row .pill {
      font-size: .8rem;
    }
.mini-tbl {
      width: 100%;
      border-collapse: collapse;
      font-size: .9rem;
    }
.mini-tbl th,
    .mini-tbl td {
      padding: .7rem .9rem;
      border-bottom: 1px solid var(--line);
      text-align: left;
    }
.mini-tbl th {
      color: var(--brand);
      font-weight: 600;
      white-space: nowrap;
    }
.mini-tbl td {
      color: var(--muted);
    }
.mini-tbl tr:last-child td {
      border-bottom: none;
    }

/* --- 子页面追加 --- */
.legal-wrap {max-width:920px;margin:0 auto;}
.legal-meta {
    display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center;
    font-size:.82rem;color:var(--muted);margin-bottom:26px;
  }
.legal-meta span {display:inline-flex;align-items:center;gap:8px;}
.legal-meta i {color:var(--brand);}
.legal-toc {
    background:var(--panel);border:1px solid var(--line);border-radius:14px;
    padding:20px 22px;margin:26px 0 34px;
  }
.legal-toc h3 {font-size:1rem;margin:0 0 14px;color:var(--ink);letter-spacing:.02em;}
.legal-toc ol {margin:0;padding-left:20px;columns:2;column-gap:28px;}
.legal-toc li {margin:7px 0;font-size:.9rem;}
.legal-toc a {color:var(--muted);text-decoration:none;transition:color .2s;}
.legal-toc a:hover {color:var(--brand);}
.legal-sec {padding:30px 0;border-top:1px solid var(--line);}
.legal-sec:first-of-type {border-top:none;}
.legal-sec h2 {
    font-size:1.22rem;color:var(--ink);margin:0 0 16px;
    display:flex;align-items:flex-start;gap:12px;line-height:1.45;
  }
.legal-sec h2 i {color:var(--brand);font-size:1.05rem;margin-top:5px;flex-shrink:0;}
.legal-sec p {color:var(--muted);font-size:.95rem;line-height:1.95;margin:0 0 14px;}
.legal-sec ul {color:var(--muted);font-size:.95rem;line-height:1.95;padding-left:20px;margin:0 0 14px;}
.legal-sec li {margin:8px 0;}
.legal-sec strong {color:var(--ink);font-weight:600;}
.legal-sec a {color:var(--brand);text-decoration:none;border-bottom:1px dashed rgba(34,211,238,.45);}
.legal-sec a:hover {color:var(--accent);border-bottom-color:rgba(251,146,60,.5);}
.warn-box {
    background:linear-gradient(180deg,rgba(251,146,60,.10),rgba(251,146,60,.03));
    border:1px solid rgba(251,146,60,.35);border-left:3px solid var(--accent);
    border-radius:12px;padding:18px 22px;margin:6px 0 22px;
  }
.warn-box p {margin:0;color:var(--ink);font-size:.92rem;line-height:1.9;}
.warn-box i {color:var(--accent);margin-right:8px;}
.contact-line {
    display:flex;flex-wrap:wrap;gap:14px;margin-top:20px;
  }
.contact-line .pill {font-size:.85rem;}
.legal-toc ol {columns:1;}
.legal-sec {padding:24px 0;}
.legal-sec h2 {font-size:1.08rem;}

/* --- 子页面追加 --- */
.map-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:22px;}
.map-card {background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 20px 16px;transition:border-color .2s ease,transform .2s ease;}
.map-card:hover {border-color:var(--line-strong);transform:translateY(-2px);}
.map-card h3 {margin:0 0 6px;font-size:1.02rem;color:var(--ink);font-weight:700;letter-spacing:.2px;}
.map-card h3 i {color:var(--brand);margin-right:8px;font-size:.95rem;}
.map-card p {margin:0 0 12px;color:var(--muted);font-size:.86rem;line-height:1.6;}
.map-card ul {list-style:none;margin:0;padding:0;}
.map-card li {padding:7px 0;border-top:1px dashed var(--line);}
.map-card li:first-child {border-top:0;}
.map-card a {color:var(--ink);text-decoration:none;font-size:.9rem;display:flex;align-items:center;gap:8px;}
.map-card a i {color:var(--accent);font-size:.75rem;}
.map-card a:hover {color:var(--brand);}
.anchor-strip {display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.anchor-strip a {display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.82rem;text-decoration:none;background:var(--panel-2);}
.anchor-strip a:hover {color:var(--brand);border-color:var(--brand);}
.map-note {color:var(--muted);font-size:.85rem;line-height:1.7;margin-top:10px;}