:root{
  --brand:#ea580c;
  --accent:#d97706;
  --paper:#fffbf5;
  --ink:#1c1917;
  --line:rgba(28,25,23,.14);
  --line-soft:rgba(28,25,23,.08);
  --muted:rgba(28,25,23,.62);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,.ttl{
  font-weight:900;
  letter-spacing:-.015em;
  line-height:1.28;
}
.mono{font-family:'SFMono-Regular',ui-monospace,Menlo,Consolas,monospace;letter-spacing:.02em;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--accent);}
::selection{background:var(--brand);color:#fff;}

/* ---------- 导航 ---------- */
.tg-nav{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(255,251,245,0);
  border-bottom:1px solid transparent;
  transition:background-color .35s ease,border-color .35s ease,backdrop-filter .35s ease;
}
.tg-nav.solid{
  background:rgba(255,251,245,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.tg-inner{
  max-width:1160px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.tg-brand{
  font-weight:900;font-size:1.22rem;color:var(--ink);
  display:inline-flex;align-items:center;gap:9px;letter-spacing:-.02em;
}
.tg-brand i{color:var(--brand);}
.tg-brand:hover{color:var(--ink);}
.tg-links{display:flex;align-items:center;gap:26px;}
.tg-links a{
  color:var(--ink);font-size:.92rem;font-weight:600;
  padding:4px 0;border-bottom:2px solid transparent;
}
.tg-links a:hover{border-bottom-color:var(--brand);color:var(--brand);}
.tg-burger{
  display:none;background:none;border:1px solid var(--line);
  border-radius:2px;padding:6px 11px;color:var(--ink);font-size:1rem;
}
@media(max-width:900px){
  .tg-links{
    position:absolute;top:100%;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:6px 20px 18px;display:none;
  }
  .tg-links.open{display:flex;}
  .tg-links a{width:100%;padding:11px 0;border-bottom:1px solid var(--line-soft);}
  .tg-burger{display:inline-block;}
}

/* ---------- 通用容器 ---------- */
.wrap{max-width:1160px;margin:0 auto;padding:0 20px;}
section{position:relative;}
.sec-pad{padding:78px 0;}
.rule{border-top:1px solid var(--line);}
.eyebrow{
  display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--brand);
  border:1px solid var(--brand);border-radius:100px;padding:3px 13px;margin-bottom:16px;
}
.sec-title{font-size:1.72rem;margin-bottom:12px;}
.sec-desc{color:var(--muted);max-width:660px;font-size:.98rem;}
@media(max-width:600px){.sec-pad{padding:56px 0;}.sec-title{font-size:1.42rem;}}

/* ---------- 几何装饰 ---------- */
.geo{position:absolute;pointer-events:none;z-index:0;opacity:.5;}
.geo-c{border-radius:50%;}
.geo-s{border-radius:2px;transform:rotate(18deg);}
.geo-t{width:0;height:0;border-style:solid;background:none!important;}

/* ---------- Hero ---------- */
.hero{
  padding:150px 0 70px;
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;top:-60px;left:0;right:0;bottom:-60px;z-index:0;
  background:radial-gradient(circle at 78% 22%, rgba(234,88,12,.13), transparent 46%),
             radial-gradient(circle at 14% 76%, rgba(217,119,6,.12), transparent 44%);
  will-change:transform;
}
.hero .wrap{position:relative;z-index:2;}
.hero h1{font-size:2.6rem;margin:14px 0 18px;max-width:16em;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{color:var(--muted);max-width:640px;font-size:1.02rem;margin-bottom:30px;}
@media(max-width:700px){.hero h1{font-size:1.85rem;}.hero{padding-top:120px;}}

.cloud{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:34px;}
.cloud span{
  font-size:.82rem;font-weight:600;padding:5px 14px;border-radius:100px;
  border:1px solid var(--line);color:var(--ink);background:rgba(255,255,255,.6);
  animation:floaty 5.5s ease-in-out infinite;
}
.cloud span:nth-child(3n){border-color:var(--brand);color:var(--brand);}
.cloud span:nth-child(4n){border-color:var(--accent);color:var(--accent);}
.cloud span:nth-child(2n){animation-delay:-1.8s;}
.cloud span:nth-child(5n){animation-delay:-3.2s;}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-6px);}}

.hero-stats{
  display:flex;flex-wrap:wrap;gap:38px;border-top:1px solid var(--line);padding-top:26px;
}
.hero-stats .st b{display:block;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:1.55rem;font-weight:700;color:var(--brand);}
.hero-stats .st span{font-size:.82rem;color:var(--muted);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:44px;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:9px;width:15px;height:15px;
  border:2px solid var(--brand);border-radius:50%;background:var(--paper);
}
.tl-item .num{font-family:ui-monospace,monospace;font-size:.76rem;color:var(--accent);letter-spacing:.1em;}
.tl-item h4{font-size:1.08rem;margin:5px 0 7px;}
.tl-item p{color:var(--muted);font-size:.94rem;margin:0;max-width:720px;}

/* ---------- 对比表格 ---------- */
.cmp{width:100%;border-collapse:collapse;margin-top:34px;font-size:.93rem;}
.cmp th,.cmp td{border:1px solid var(--line);padding:15px 16px;vertical-align:top;text-align:left;}
.cmp thead th{background:transparent;font-weight:800;font-size:.86rem;letter-spacing:.04em;color:var(--ink);}
.cmp tbody tr td:first-child{font-weight:700;}
.cmp .yes{color:var(--brand);font-weight:700;}
.cmp .no{color:var(--muted);}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}

/* ---------- 特色卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:38px;}
.fcard{
  border:1px solid var(--line);border-radius:3px;padding:26px 22px;background:transparent;
  transition:border-color .25s ease;
}
.fcard:hover{border-color:var(--brand);}
.fcard i{font-size:1.24rem;color:var(--brand);}
.fcard h4{font-size:1.03rem;margin:14px 0 9px;}
.fcard p{color:var(--muted);font-size:.9rem;margin:0;}
@media(max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:580px){.card-grid{grid-template-columns:1fr;}}

/* ---------- 海报网格 ---------- */
.poster-grid{display:grid;gap:18px;margin-top:34px;}
.pg-6{grid-template-columns:repeat(6,1fr);}
.pg-4{grid-template-columns:repeat(4,1fr);}
.pg-3{grid-template-columns:repeat(3,1fr);}
@media(max-width:1080px){.pg-6{grid-template-columns:repeat(4,1fr);}}
@media(max-width:820px){.pg-6,.pg-4{grid-template-columns:repeat(3,1fr);}}
@media(max-width:560px){.pg-6,.pg-4,.pg-3{grid-template-columns:repeat(2,1fr);}}
.pcard{border:1px solid var(--line);border-radius:3px;overflow:hidden;background:transparent;}
.pcard .thumb{position:relative;width:100%;aspect-ratio:2/3;overflow:hidden;background:#f1e6da;}
.pcard .thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.pcard .play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(28,25,23,.42);opacity:0;transition:opacity .28s ease;
}
.pcard .play i{
  width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.95rem;
}
.pcard:hover .play{opacity:1;}
.pcard .meta{padding:10px 11px 13px;}
.pcard .meta h5{font-size:.86rem;margin:0 0 4px;font-weight:700;line-height:1.4;}
.pcard .meta .tag{font-size:.74rem;color:var(--muted);font-family:ui-monospace,monospace;}

/* ---------- 步骤条（介绍） ---------- */
.steps{margin-top:40px;border-left:1px solid var(--line);padding-left:0;}
.step{
  display:grid;grid-template-columns:92px 1fr;gap:22px;
  border-top:1px solid var(--line);padding:28px 0;
}
.step:last-child{border-bottom:1px solid var(--line);}
.step .sn{
  font-family:ui-monospace,monospace;font-size:1.5rem;font-weight:700;color:var(--brand);
  line-height:1.2;padding-left:22px;position:relative;
}
.step .sn::before{
  content:"";position:absolute;left:-5px;top:11px;width:9px;height:9px;border-radius:50%;
  background:var(--brand);
}
.step h4{font-size:1.06rem;margin:0 0 8px;}
.step p{color:var(--muted);font-size:.93rem;margin:0;max-width:740px;}
@media(max-width:640px){.step{grid-template-columns:1fr;gap:8px;}.step .sn{padding-left:20px;}}

/* ---------- FAQ ---------- */
.faq{margin-top:34px;border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  cursor:pointer;list-style:none;padding:20px 40px 20px 0;position:relative;
  font-weight:700;font-size:1rem;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-weight:400;font-size:1.3rem;color:var(--brand);font-family:ui-monospace,monospace;
  transition:transform .25s ease;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq .ans{padding:0 30px 22px 0;color:var(--muted);font-size:.94rem;}

/* ---------- CTA ---------- */
.cta{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:70px 0;position:relative;overflow:hidden;
}
.cta .wrap{position:relative;z-index:2;}
.cta h2{font-size:1.88rem;max-width:18em;}
.cta p{color:var(--muted);max-width:620px;margin:14px 0 28px;}
.btn-brand{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--brand);color:#fff;font-weight:700;font-size:.94rem;
  border:1px solid var(--brand);border-radius:3px;padding:12px 26px;
  transition:background-color .25s ease,color .25s ease;
}
.btn-brand:hover{background:transparent;color:var(--brand);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  border:1px solid var(--line);color:var(--ink);font-weight:700;font-size:.94rem;
  border-radius:3px;padding:12px 26px;transition:border-color .25s ease,color .25s ease;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 友链 & 页脚 ---------- */
.friend{padding:48px 0;border-top:1px solid var(--line);}
.friend h3{font-size:1rem;margin-bottom:14px;}
.friend .fl-box{
  border:1px dashed var(--line);border-radius:3px;padding:18px 20px;
  color:var(--muted);font-size:.9rem;line-height:2;
}
footer{border-top:1px solid var(--line);padding:44px 0 34px;}
.foot-grid{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;}
.foot-grid .col h5{font-size:.86rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:12px;font-weight:700;}
.foot-grid .col a{display:block;color:var(--ink);font-size:.9rem;margin-bottom:8px;}
.foot-grid .col a:hover{color:var(--brand);}
.foot-brand{max-width:320px;}
.foot-brand p{color:var(--muted);font-size:.88rem;margin-top:10px;}
.copy{margin-top:34px;border-top:1px solid var(--line-soft);padding-top:20px;
  font-size:.82rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;}

/* --- 子页面追加 --- */
/* 本页专属少量样式：联系卡片与表单，全部使用本站配色变量 */
.ct-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.ct-card {background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:26px 24px;height:100%;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.ct-card:hover {transform:translateY(-4px);border-color:var(--brand);box-shadow:0 14px 34px rgba(28,25,23,.10)}
.ct-card .ct-ic {width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;font-size:19px;margin-bottom:16px}
.ct-card h3 {font-size:18px;font-weight:800;margin:0 0 8px;color:var(--ink)}
.ct-card p {color:var(--muted);font-size:14.5px;line-height:1.75;margin:0 0 14px}
.ct-mail {display:inline-flex;align-items:center;gap:8px;font-family:'Inter',monospace;font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px dashed var(--line);padding-bottom:2px;text-decoration:none;word-break:break-all}
.ct-mail:hover {color:var(--accent);border-color:var(--accent)}
.ct-tag {display:inline-block;font-size:12px;font-weight:700;letter-spacing:.4px;color:var(--brand);background:rgba(234,88,12,.10);border-radius:999px;padding:3px 11px;margin-bottom:12px}
.ct-form {background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:30px 28px}
.ct-form label {display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:7px;letter-spacing:.3px}
.ct-form input,.ct-form select,.ct-form textarea {width:100%;background:rgba(28,25,23,.035);border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-family:inherit;font-size:14.5px;color:var(--ink);outline:none;transition:border-color .2s,background .2s;margin-bottom:16px}
.ct-form input::placeholder,.ct-form textarea::placeholder {color:rgba(28,25,23,.38)}
.ct-form input:focus,.ct-form select:focus,.ct-form textarea:focus {border-color:var(--brand);background:rgba(234,88,12,.05)}
.ct-form textarea {resize:vertical;min-height:130px}
.ct-submit {display:inline-flex;align-items:center;gap:9px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;border:none;border-radius:999px;padding:12px 30px;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;transition:opacity .2s,transform .2s}
.ct-submit:hover {opacity:.9;transform:translateY(-2px)}
.ct-steps {display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;counter-reset:cs}
.ct-step {position:relative;padding:22px 20px 20px;border:1px dashed var(--line);border-radius:14px;background:rgba(234,88,12,.03)}
.ct-step::before {counter-increment:cs;content:counter(cs,decimal-leading-zero);font-size:13px;font-weight:800;letter-spacing:1px;color:var(--brand);font-family:'Inter',monospace;display:block;margin-bottom:10px}
.ct-step h4 {font-size:15.5px;font-weight:800;margin:0 0 6px;color:var(--ink)}
.ct-step p {font-size:14px;color:var(--muted);line-height:1.7;margin:0}
.ct-faq {border:1px solid var(--line);border-radius:14px;background:var(--paper);overflow:hidden}
.ct-faq details {border-bottom:1px solid var(--line-soft)}
.ct-faq details:last-child {border-bottom:none}
.ct-faq summary {list-style:none;cursor:pointer;padding:17px 22px;font-size:15.5px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px}
.ct-faq summary::-webkit-details-marker {display:none}
.ct-faq summary::after {content:'\f078';font-family:'Font Awesome 6 Free';font-weight:900;font-size:12px;color:var(--brand);transition:transform .25s}
.ct-faq details[open] summary::after {transform:rotate(180deg)}
.ct-faq .ct-ans {padding:0 22px 18px;font-size:14.5px;line-height:1.85;color:var(--muted)}
.ct-note {background:rgba(234,88,12,.06);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;padding:16px 20px;font-size:14px;line-height:1.8;color:var(--muted)}
.ct-note strong {color:var(--ink)}
.ct-form {padding:22px 18px}
.ct-card {padding:22px 18px}

/* --- 子页面追加 --- */
.doc-hero {padding:56px 0 34px;border-bottom:1px solid var(--line);}
.doc-wrap {display:grid;grid-template-columns:230px 1fr;gap:38px;align-items:start;padding:44px 0 70px;}
.doc-nav {position:sticky;top:84px;border:1px solid var(--line);border-radius:14px;padding:16px 14px;background:var(--paper);}
.doc-nav h4 {font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 10px;font-weight:700;}
.doc-nav a {display:block;font-size:14px;color:var(--ink);text-decoration:none;padding:7px 9px;border-radius:8px;line-height:1.4;}
.doc-nav a:hover {background:rgba(234,88,12,.09);color:var(--brand);}
.doc-body h2 {font-size:23px;font-weight:800;margin:38px 0 12px;padding-top:8px;letter-spacing:-.01em;}
.doc-body h2:first-child {margin-top:0;}
.doc-body h3 {font-size:17px;font-weight:700;margin:22px 0 8px;color:var(--brand);}
.doc-body p {font-size:15.5px;line-height:1.85;color:var(--ink);margin:0 0 14px;}
.doc-body ul {font-size:15.5px;line-height:1.85;padding-left:20px;margin:0 0 16px;}
.doc-body li {margin-bottom:7px;}
.doc-note {border-left:3px solid var(--brand);background:rgba(234,88,12,.06);padding:14px 18px;border-radius:0 10px 10px 0;margin:0 0 18px;}
.doc-note p {margin:0;font-size:15px;}
.doc-meta {font-size:13px;color:var(--muted);margin-top:8px;}
.doc-card {border:1px solid var(--line);border-radius:14px;padding:20px 22px;background:var(--paper);}
.doc-card h3 {margin-top:0;}
.kbd {font-family:'Inter',monospace;background:rgba(28,25,23,.06);border:1px solid var(--line);border-radius:6px;padding:1px 7px;font-size:13.5px;}
.doc-wrap {grid-template-columns:1fr;gap:24px;padding:30px 0 50px;}
.doc-nav {position:static;}
.doc-body h2 {font-size:20px;}

/* --- 子页面追加 --- */
.map-grid {display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin-top:26px;}
.map-card {background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:20px 20px 18px;transition:.25s;position:relative;overflow:hidden;}
.map-card:hover {border-color:var(--brand);box-shadow:0 10px 30px rgba(234,88,12,.10);transform:translateY(-3px);}
.map-card .mc-icon {width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:12px;}
.map-card h3 {font-size:17px;font-weight:700;margin:0 0 6px;color:var(--ink);}
.map-card p {font-size:13.5px;line-height:1.7;color:var(--muted);margin:0 0 12px;}
.map-card a.mc-link {display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--brand);text-decoration:none;}
.map-card a.mc-link:hover {color:var(--accent);}
.anchor-list {list-style:none;padding:0;margin:18px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;}
.anchor-list li a {display:flex;align-items:center;gap:9px;padding:11px 14px;border:1px solid var(--line-soft);border-radius:11px;font-size:14px;color:var(--ink);text-decoration:none;background:var(--paper);transition:.2s;font-weight:500;}
.anchor-list li a:hover {border-color:var(--brand);color:var(--brand);background:#fff;}
.anchor-list li a i {color:var(--accent);font-size:13px;}
.tree-box {border:1px solid var(--line);border-radius:14px;padding:22px 24px;background:var(--paper);margin-top:24px;font-family:'Inter',ui-monospace,monospace;font-size:14px;line-height:2.1;color:var(--ink);overflow-x:auto;}
.tree-box .t-lv1 {font-weight:700;color:var(--brand);}
.tree-box .t-lv2 {color:var(--muted);padding-left:22px;display:block;}
.tree-box .t-lv2 i {color:var(--accent);font-size:11px;margin-right:6px;}
.map-card {padding:16px;}
.tree-box {padding:16px;font-size:12.5px;}

/* --- 子页面追加 --- */
.pp-hero { padding: 120px 0 44px; }
.pp-date { font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.pp-toc { border: 1px solid var(--line); background: var(--paper); padding: 22px 24px; border-radius: 4px; }
.pp-toc h3 { font-size: 1rem; font-weight: 800; margin: 0 0 14px; }
.pp-toc ol { margin: 0; padding-left: 20px; }
.pp-toc li { margin-bottom: 8px; font-size: .92rem; }
.pp-toc a { color: var(--brand); text-decoration: none; }
.pp-toc a:hover { text-decoration: underline; }
.pp-block { padding-top: 40px; }
.pp-block h2 { font-size: 1.35rem; font-weight: 800; letter-spacing: -.01em; margin-bottom: 14px; }
.pp-block h3 { font-size: 1.02rem; font-weight: 700; margin: 22px 0 10px; }
.pp-block p, .pp-block li { font-size: .96rem; line-height: 1.85; color: var(--ink); }
.pp-block p { margin-bottom: 14px; }
.pp-block ul, .pp-block ol { padding-left: 22px; margin-bottom: 14px; }
.pp-block li { margin-bottom: 8px; }
.pp-note { border-left: 3px solid var(--brand); background: var(--paper); padding: 16px 20px; margin: 18px 0; font-size: .93rem; line-height: 1.8; }
.pp-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 8px 0 6px; }
.pp-card { border: 1px solid var(--line); background: var(--paper); padding: 20px 22px; border-radius: 4px; }
.pp-card h4 { font-size: .98rem; font-weight: 700; margin: 0 0 8px; }
.pp-card p { font-size: .9rem; margin: 0; color: var(--muted); line-height: 1.75; }
.pp-tbl { width: 100%; border-collapse: collapse; font-size: .9rem; }
.pp-tbl th, .pp-tbl td { border: 1px solid var(--line); padding: 11px 14px; text-align: left; vertical-align: top; }
.pp-tbl th { background: var(--paper); font-weight: 700; }
.pp-grid { grid-template-columns: 1fr; }
.pp-hero { padding: 96px 0 30px; }