:root{
  --main:#22d3ee;
  --accent:#fb923c;
  --bg:#0f172a;
  --bg-soft:#151f38;
  --bg-card:#131c33;
  --text:#e2e8f0;
  --text-dim:#94a3b8;
  --line:rgba(226,232,240,.10);
  --radius:8px;
  --mono:'Inter',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(34,211,238,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,.045) 1px,transparent 1px),
    radial-gradient(rgba(251,146,60,.10) 1px,transparent 1px);
  background-size:64px 64px,64px 64px,64px 64px;
}
body > *{position:relative;z-index:1;}
h1,h2,h3,h4,h5{font-weight:900;letter-spacing:-.02em;line-height:1.15;}
a{text-decoration:none;color:inherit;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ===== NAV ===== */
.top-nav{
  position:sticky;top:0;z-index:1030;
  background:rgba(15,23,42,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;}
.brand-logo{
  font-weight:900;font-size:1.4rem;letter-spacing:-.03em;
  display:flex;align-items:center;gap:9px;color:var(--text);
}
.brand-logo i{color:var(--main);font-size:1.15rem;}
.brand-logo .dot{color:var(--accent);}
.nav-links{display:flex;gap:6px;align-items:center;}
.nav-links a{
  padding:8px 14px;border-radius:var(--radius);font-size:.92rem;font-weight:500;
  color:var(--text-dim);transition:.22s;border:1px solid transparent;
}
.nav-links a:hover,.nav-links a.active{
  color:var(--main);border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.07);
}
.nav-toggle{
  display:none;background:none;border:1px solid var(--line);color:var(--text);
  width:42px;height:42px;border-radius:var(--radius);font-size:1.1rem;
}
.nav-mobile{display:none;flex-direction:column;padding:10px 0 18px;border-top:1px solid var(--line);}
.nav-mobile a{padding:11px 6px;color:var(--text-dim);font-size:.95rem;border-bottom:1px dashed var(--line);}
.nav-mobile a:last-child{border-bottom:none;}

/* ===== HERO ===== */
.hero{
  position:relative;min-height:640px;display:flex;align-items:center;
  overflow:hidden;border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background:url('{随机图片}') center/cover no-repeat;
  filter:brightness(.38) saturate(.85);
  transform:scale(1.03);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,23,42,.94) 22%,rgba(15,23,42,.55) 62%,rgba(15,23,42,.85) 100%);
}
.hero-content{position:relative;z-index:2;padding:90px 0;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);border:1px solid rgba(251,146,60,.4);
  padding:6px 14px;border-radius:999px;background:rgba(251,146,60,.08);
  margin-bottom:26px;
}
.hero h1{
  font-size:clamp(2.6rem,6vw,4rem);
  margin:0 0 22px;max-width:16ch;
}
.hero h1 em{font-style:normal;color:var(--main);}
.hero p.lead-text{
  font-size:1.08rem;color:var(--text-dim);max-width:52ch;margin-bottom:34px;
}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:46px;padding-top:30px;border-top:1px solid var(--line);}
.hero-stats .st{font-family:var(--mono);}
.hero-stats .st b{display:block;font-size:1.7rem;font-weight:800;color:var(--main);}
.hero-stats .st span{font-size:.8rem;color:var(--text-dim);letter-spacing:.05em;}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--main);color:#062028;font-weight:800;font-size:.98rem;
  padding:14px 28px;border-radius:var(--radius);border:1px solid var(--main);
  transition:.22s;
}
.btn-main:hover{background:transparent;color:var(--main);transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  background:transparent;color:var(--text);font-weight:600;font-size:.98rem;
  padding:14px 26px;border-radius:var(--radius);border:1px solid var(--line);
  transition:.22s;margin-left:12px;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}

/* ===== SECTION BASE ===== */
section{padding:96px 0;border-bottom:1px solid var(--line);}
.sec-label{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;display:block;
}
.sec-title{font-size:clamp(1.8rem,3.6vw,2.6rem);margin-bottom:18px;}
.sec-desc{color:var(--text-dim);max-width:62ch;font-size:1rem;}

/* ===== BENTO 长文介绍 ===== */
.bento{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:16px;
  margin-top:52px;
}
.bento-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.bento-card:hover{transform:scale(1.015);border-color:rgba(34,211,238,.5);box-shadow:0 8px 30px -18px rgba(34,211,238,.6);}
.bento-card h3{font-size:1.22rem;margin-bottom:12px;}
.bento-card p{color:var(--text-dim);font-size:.94rem;margin:0;}
.b-a{grid-column:span 4;grid-row:span 1;}
.b-b{grid-column:span 2;background:linear-gradient(150deg,rgba(34,211,238,.13),rgba(19,28,51,1));}
.b-c{grid-column:span 2;}
.b-d{grid-column:span 2;}
.b-e{grid-column:span 2;background:linear-gradient(150deg,rgba(251,146,60,.14),rgba(19,28,51,1));}
.b-f{grid-column:span 6;display:flex;align-items:center;gap:26px;flex-wrap:wrap;justify-content:space-between;}
.bento-num{
  font-family:var(--mono);font-weight:800;font-size:2rem;color:var(--main);
  line-height:1;margin-bottom:16px;display:block;
}

/* 编号清单 */
.step-list{list-style:none;counter-reset:s;padding:0;margin:26px 0 0;}
.step-list li{
  counter-increment:s;position:relative;padding:18px 0 18px 58px;
  border-bottom:1px dashed var(--line);color:var(--text-dim);font-size:.96rem;
}
.step-list li:first-child{border-top:1px dashed var(--line);}
.step-list li::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;left:0;top:18px;
  font-family:var(--mono);font-weight:800;font-size:.92rem;
  color:var(--accent);border:1px solid rgba(251,146,60,.4);
  width:36px;height:36px;border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;
  background:rgba(251,146,60,.07);
}
.step-list li b{color:var(--text);display:block;margin-bottom:3px;font-weight:700;}

/* ===== 对比表格 ===== */
.table-wrap{
  margin-top:44px;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--bg-card);
}
.cmp-table{width:100%;border-collapse:collapse;font-size:.93rem;}
.cmp-table thead th{
  background:rgba(34,211,238,.08);
  color:var(--main);font-weight:800;font-family:var(--mono);
  font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;
  padding:18px 20px;text-align:left;border-bottom:1px solid var(--line);
}
.cmp-table th:first-child{width:26%;}
.cmp-table td{
  padding:18px 20px;border-bottom:1px solid var(--line);
  color:var(--text-dim);vertical-align:top;
}
.cmp-table tbody tr:last-child td{border-bottom:none;}
.cmp-table tbody tr:hover{background:rgba(34,211,238,.04);}
.cmp-table td:first-child{color:var(--text);font-weight:600;}
.tag-yes{color:var(--main);font-weight:700;}
.tag-no{color:#64748b;}

/* ===== FAQ ===== */
.faq-list{margin-top:44px;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;transition:.22s;
}
.faq-item[open]{border-color:rgba(34,211,238,.45);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 24px;
  font-weight:700;font-size:1.02rem;display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-weight:800;color:var(--main);
  font-size:1.3rem;flex-shrink:0;transition:.22s;
}
.faq-item[open] summary::after{content:"−";color:var(--accent);}
.faq-item p{margin:0;padding:0 24px 22px;color:var(--text-dim);font-size:.95rem;}

/* ===== 特色卡片 ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px;}
.feat-card{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius);padding:30px 26px;
  transition:transform .25s ease,border-color .25s ease;
}
.feat-card:hover{transform:scale(1.02);border-color:rgba(251,146,60,.55);}
.feat-icon{
  width:48px;height:48px;border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.1);color:var(--main);
  font-size:1.1rem;margin-bottom:20px;border:1px solid rgba(34,211,238,.25);
}
.feat-card h3{font-size:1.1rem;margin-bottom:10px;}
.feat-card p{color:var(--text-dim);font-size:.92rem;margin:0;}

/* ===== CTA ===== */
.cta-box{
  margin:0 auto;text-align:center;
  border:1px solid rgba(34,211,238,.3);border-radius:var(--radius);
  background:linear-gradient(140deg,rgba(34,211,238,.10),rgba(251,146,60,.08));
  padding:70px 34px;
}
.cta-box h2{font-size:clamp(1.9rem,4vw,2.8rem);margin-bottom:18px;}
.cta-box p{color:var(--text-dim);max-width:54ch;margin:0 auto 34px;}

/* ===== 友链 + 页脚 ===== */
.friend-links{
  padding:40px 0;border-bottom:1px solid var(--line);
}
.friend-links h4{
  font-size:.86rem;font-family:var(--mono);letter-spacing:.16em;
  text-transform:uppercase;color:var(--text-dim);margin-bottom:14px;font-weight:700;
}
.friend-links p{margin:0;color:var(--text-dim);font-size:.9rem;word-break:break-all;}
footer{padding:56px 0 40px;}
.foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.foot-brand{max-width:320px;}
.foot-brand .brand-logo{margin-bottom:14px;}
.foot-brand p{color:var(--text-dim);font-size:.88rem;margin:0;}
.foot-links{display:flex;gap:60px;flex-wrap:wrap;}
.foot-col h5{
  font-size:.8rem;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--main);margin-bottom:14px;font-weight:700;
}
.foot-col a{display:block;color:var(--text-dim);font-size:.9rem;padding:5px 0;transition:.2s;}
.foot-col a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  color:var(--text-dim);font-size:.82rem;font-family:var(--mono);
}

/* ===== 回到顶部 ===== */
#toTop{
  position:fixed;right:24px;bottom:28px;z-index:1200;
  width:48px;height:48px;border-radius:var(--radius);
  border:1px solid rgba(34,211,238,.45);background:rgba(19,28,51,.92);
  color:var(--main);font-size:1rem;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.3s;cursor:pointer;backdrop-filter:blur(8px);
}
#toTop.show{opacity:1;visibility:visible;transform:translateY(0);}
#toTop:hover{background:var(--main);color:#062028;}

/* ===== 渐显 ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}
.img-ph{
  background:linear-gradient(110deg,#131c33 20%,#1b2743 40%,#131c33 60%);
  background-size:220% 100%;
  animation:shine 1.6s linear infinite;
}
@keyframes shine{to{background-position:-220% 0;}}

/* ===== RESPONSIVE ===== */
@media(max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .nav-mobile.open{display:flex;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .b-a,.b-b,.b-c,.b-d,.b-e,.b-f{grid-column:span 2;grid-row:auto;}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  section{padding:72px 0;}
}
@media(max-width:640px){
  .bento{grid-template-columns:1fr;}
  .b-a,.b-b,.b-c,.b-d,.b-e,.b-f{grid-column:span 1;}
  .feat-grid{grid-template-columns:1fr;}
  .hero{min-height:560px;}
  .hero-content{padding:64px 0;}
  .hero-stats{gap:22px;}
  .hero-stats .st b{font-size:1.35rem;}
  .btn-ghost{margin-left:0;margin-top:12px;}
  .cmp-table{font-size:.85rem;}
  .cmp-table thead th,.cmp-table td{padding:13px 12px;}
  .cta-box{padding:46px 22px;}
  .foot-links{gap:34px;}
  section{padding:58px 0;}
}

/* --- 子页面追加 --- */
/* 本页专属少量样式，复用站点变量 */
  .page-hero {padding:110px 0 46px;position:relative;overflow:hidden;}
.page-hero::before {content:"";position:absolute;inset:0;background:
    radial-gradient(880px 420px at 12% -10%, rgba(34,211,238,.16), transparent 65%),
    radial-gradient(680px 380px at 88% 0%, rgba(251,146,60,.12), transparent 62%);
    pointer-events:none;}
.page-hero .hero-content {position:relative;z-index:2;}
.rank-tabs {display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 8px;}
.rank-tabs a {font-size:.86rem;padding:8px 16px;border-radius:999px;border:1px solid var(--line);
    color:var(--text-dim);text-decoration:none;transition:.2s;background:rgba(255,255,255,.02);}
.rank-tabs a:hover,.rank-tabs a.on {color:var(--bg);background:var(--main);border-color:var(--main);font-weight:600;}
.rank-board {background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.rank-row {display:flex;align-items:center;gap:16px;padding:16px 18px;border-bottom:1px solid var(--line);transition:.2s;}
.rank-row:last-child {border-bottom:0;}
.rank-row:hover {background:rgba(34,211,238,.05);}
.rank-no {flex:0 0 44px;font-family:var(--mono);font-size:1.15rem;font-weight:800;
    color:var(--text-dim);text-align:center;}
.rank-row:nth-child(1) .rank-no {color:var(--accent);}
.rank-row:nth-child(2) .rank-no {color:var(--main);}
.rank-row:nth-child(3) .rank-no {color:#c4b5fd;}
.rank-main {flex:1 1 auto;min-width:0;}
.rank-title {font-weight:700;color:var(--text);font-size:1rem;margin:0 0 4px;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rank-meta {font-size:.78rem;color:var(--text-dim);font-family:var(--mono);}
.rank-bar {flex:0 0 150px;height:6px;border-radius:999px;background:rgba(226,232,240,.08);overflow:hidden;}
.rank-bar i {display:block;height:100%;background:linear-gradient(90deg,var(--main),var(--accent));border-radius:999px;}
.rank-score {flex:0 0 74px;text-align:right;font-family:var(--mono);font-weight:700;color:var(--main);font-size:.92rem;}
.section-block {padding:54px 0;}
.note-card {background:var(--bg-soft);border:1px solid var(--line);border-left:3px solid var(--accent);
    border-radius:var(--radius);padding:18px 20px;color:var(--text-dim);font-size:.9rem;line-height:1.85;}
.rule-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;}
.rule-item {background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;}
.rule-item h3 {font-size:.98rem;color:var(--text);margin:0 0 8px;font-weight:700;}
.rule-item p {font-size:.85rem;color:var(--text-dim);line-height:1.8;margin:0;}
.rule-item .ico {color:var(--main);margin-right:8px;}
.page-hero {padding:92px 0 30px;}
.rank-bar {display:none;}
.rank-score {flex:0 0 60px;font-size:.82rem;}
.rank-row {padding:13px 12px;gap:10px;}
.rank-no {flex:0 0 30px;font-size:1rem;}

/* --- 子页面追加 --- */
/* 本页专属少量补充样式，变量全部沿用站点 */
.guide-hero {padding:56px 0 32px;border-bottom:1px solid var(--line);background:
  radial-gradient(900px 320px at 12% -10%, rgba(34,211,238,.14), transparent 65%),
  radial-gradient(700px 300px at 88% 0%, rgba(251,146,60,.10), transparent 60%);}
.guide-hero h1 {font-size:clamp(1.7rem,4vw,2.6rem);line-height:1.25;font-weight:800;letter-spacing:-.02em;margin:14px 0 14px;}
.guide-hero p {color:var(--text-dim);max-width:760px;line-height:1.85;font-size:.98rem;margin:0;}
.guide-toc {display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.guide-toc a {font-family:var(--mono);font-size:.8rem;color:var(--text-dim);text-decoration:none;
  border:1px solid var(--line);background:var(--bg-soft);padding:7px 13px;border-radius:999px;transition:.18s;}
.guide-toc a:hover {color:var(--main);border-color:rgba(34,211,238,.5);transform:translateY(-1px);}
.g-sec {padding:52px 0;border-bottom:1px solid var(--line);}
.g-sec:last-child {border-bottom:none;}
.g-head {display:flex;align-items:flex-start;gap:14px;margin-bottom:26px;}
.g-num {font-family:var(--mono);font-size:.78rem;color:var(--main);border:1px solid rgba(34,211,238,.35);
  background:rgba(34,211,238,.08);border-radius:var(--radius);padding:6px 10px;flex:0 0 auto;margin-top:4px;}
.g-head h2 {font-size:clamp(1.2rem,2.6vw,1.55rem);font-weight:800;margin:0 0 8px;letter-spacing:-.01em;}
.g-head p {margin:0;color:var(--text-dim);font-size:.92rem;line-height:1.8;}
.g-card {background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;height:100%;transition:.2s;}
.g-card:hover {border-color:rgba(34,211,238,.35);transform:translateY(-2px);}
.g-card .ic {width:38px;height:38px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.10);color:var(--main);font-size:1rem;margin-bottom:14px;}
.g-card h3 {font-size:1rem;font-weight:700;margin:0 0 8px;color:var(--text);}
.g-card p {margin:0;color:var(--text-dim);font-size:.88rem;line-height:1.8;}
.g-steps {list-style:none;padding:0;margin:0;counter-reset:gs;}
.g-steps li {position:relative;padding:16px 18px 16px 58px;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:var(--radius);margin-bottom:12px;counter-increment:gs;color:var(--text-dim);font-size:.9rem;line-height:1.8;}
.g-steps li::before {content:counter(gs,decimal-leading-zero);position:absolute;left:18px;top:16px;
  font-family:var(--mono);font-size:.82rem;color:var(--accent);font-weight:700;}
.g-steps li b {color:var(--text);font-weight:600;}
.g-table {width:100%;border-collapse:collapse;font-size:.88rem;}
.g-table th,.g-table td {padding:13px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.g-table thead th {color:var(--main);font-family:var(--mono);font-size:.76rem;letter-spacing:.06em;
  text-transform:uppercase;background:rgba(34,211,238,.06);border-bottom:1px solid rgba(34,211,238,.25);}
.g-table tbody tr:hover td {background:rgba(255,255,255,.02);}
.g-table td {color:var(--text-dim);}
.g-table td:first-child {color:var(--text);font-weight:600;white-space:nowrap;}
.g-table-wrap {overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-card);}
.g-note {display:flex;gap:14px;padding:18px 20px;border-radius:var(--radius);
  background:rgba(251,146,60,.07);border:1px solid rgba(251,146,60,.28);margin-top:20px;}
.g-note i {color:var(--accent);font-size:1.05rem;margin-top:2px;}
.g-note p {margin:0;color:var(--text-dim);font-size:.88rem;line-height:1.85;}
.g-note p b {color:var(--accent);font-weight:600;}
.g-faq {border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-card);}
.g-faq details {border-bottom:1px solid var(--line);}
.g-faq details:last-child {border-bottom:none;}
.g-faq summary {cursor:pointer;padding:17px 20px;font-weight:600;font-size:.94rem;color:var(--text);
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;transition:.18s;}
.g-faq summary::-webkit-details-marker {display:none;}
.g-faq summary::after {content:"+";font-family:var(--mono);color:var(--main);font-size:1.1rem;flex:0 0 auto;}
.g-faq details[open] summary::after {content:"−";}
.g-faq summary:hover {background:rgba(34,211,238,.05);}
.g-faq .faq-body {padding:0 20px 18px;color:var(--text-dim);font-size:.88rem;line-height:1.85;}
.g-cta {background:linear-gradient(120deg, rgba(34,211,238,.10), rgba(251,146,60,.07));
  border:1px solid rgba(34,211,238,.25);border-radius:var(--radius);padding:34px 28px;text-align:center;}
.g-cta h2 {font-size:clamp(1.15rem,2.5vw,1.5rem);font-weight:800;margin:0 0 10px;}
.g-cta p {color:var(--text-dim);font-size:.9rem;line-height:1.8;max-width:600px;margin:0 auto 22px;}
.g-cta .btns {display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.guide-hero {padding:36px 0 24px;}
.g-sec {padding:38px 0;}
.g-head {gap:10px;}
.g-card {padding:18px;}

/* --- 子页面追加 --- */
.about-hero {
    position:relative;
    padding:120px 0 56px;
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
.about-hero::before {
    content:"";
    position:absolute;
    inset:0;
    background:
      radial-gradient(720px 320px at 12% -10%, rgba(34,211,238,.16), transparent 70%),
      radial-gradient(620px 300px at 88% 0%, rgba(251,146,60,.12), transparent 70%);
    pointer-events:none;
  }
.about-hero .container-x {position:relative;z-index:1;}
.about-h1 {
    font-weight:900;
    font-size:clamp(28px,4.4vw,52px);
    line-height:1.15;
    letter-spacing:-.02em;
    margin:16px 0 18px;
  }
.about-h1 em {
    font-style:normal;
    color:var(--main);
    background:linear-gradient(90deg,var(--main),var(--accent));
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
  }
.about-lead {
    color:var(--text-dim);
    font-size:clamp(15px,1.5vw,18px);
    line-height:1.85;
    max-width:760px;
  }
.about-sec {
    padding:64px 0;
    border-bottom:1px solid var(--line);
  }
.about-sec:last-of-type {border-bottom:none;}
.about-h2 {
    font-size:clamp(21px,2.6vw,30px);
    font-weight:800;
    letter-spacing:-.01em;
    margin:10px 0 16px;
    line-height:1.35;
  }
.about-p {
    color:var(--text-dim);
    line-height:1.95;
    font-size:15.5px;
    margin-bottom:14px;
  }
.about-p strong {color:var(--text);font-weight:600;}
.info-card {
    background:var(--bg-card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px 22px 20px;
    height:100%;
    transition:border-color .2s ease, transform .2s ease;
  }
.info-card:hover {border-color:rgba(34,211,238,.45);transform:translateY(-2px);}
.info-card .ic-icon {
    width:40px;height:40px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:var(--radius);
    background:rgba(34,211,238,.12);
    color:var(--main);
    font-size:17px;
    margin-bottom:14px;
  }
.info-card.accent .ic-icon {background:rgba(251,146,60,.13);color:var(--accent);}
.info-card h3 {
    font-size:16.5px;
    font-weight:700;
    margin:0 0 10px;
    color:var(--text);
  }
.info-card p {
    margin:0;
    color:var(--text-dim);
    font-size:14px;
    line-height:1.85;
  }
.rule-list {
    list-style:none;
    padding:0;
    margin:0;
  }
.rule-list li {
    position:relative;
    padding:12px 0 12px 30px;
    color:var(--text-dim);
    font-size:15px;
    line-height:1.8;
    border-bottom:1px dashed var(--line);
  }
.rule-list li:last-child {border-bottom:none;}
.rule-list li::before {
    content:"\f00c";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    position:absolute;
    left:0;top:13px;
    color:var(--main);
    font-size:13px;
  }
.rule-list li b {color:var(--text);font-weight:600;}
.timeline {
    position:relative;
    padding-left:26px;
    margin:0;
  }
.timeline::before {
    content:"";
    position:absolute;
    left:6px;top:6px;bottom:6px;
    width:2px;
    background:linear-gradient(180deg,var(--main),rgba(251,146,60,.55),transparent);
  }
.tl-item {position:relative;padding-bottom:26px;}
.tl-item:last-child {padding-bottom:0;}
.tl-item::before {
    content:"";
    position:absolute;
    left:-25px;top:5px;
    width:11px;height:11px;
    border-radius:50%;
    background:var(--bg);
    border:2px solid var(--main);
  }
.tl-item h4 {
    font-size:15.5px;
    font-weight:700;
    margin:0 0 6px;
    color:var(--text);
  }
.tl-item p {
    margin:0;
    color:var(--text-dim);
    font-size:14px;
    line-height:1.85;
  }
.stat-strip {
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:26px;
  }
.stat-box {
    flex:1 1 150px;
    background:var(--bg-soft);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:16px 18px;
  }
.stat-box .num {
    font-family:var(--mono);
    font-size:23px;
    font-weight:800;
    color:var(--main);
    line-height:1.2;
  }
.stat-box .lbl {
    color:var(--text-dim);
    font-size:12.5px;
    margin-top:4px;
    letter-spacing:.02em;
  }
.cta-box h3 {
    font-size:clamp(19px,2.3vw,24px);
    font-weight:800;
    margin:0 0 10px;
  }
.cta-actions {
    display:flex;
    gap:12px;
    justify-content:center;
    flex-wrap:wrap;
  }
.footer-x {
    border-top:1px solid var(--line);
    background:var(--bg-soft);
    padding:44px 0 30px;
  }
.footer-x .f-brand {
    font-weight:800;
    font-size:17px;
    color:var(--text);
    display:inline-flex;
    align-items:center;
    gap:8px;
    text-decoration:none;
    margin-bottom:12px;
  }
.footer-x .f-brand:hover {color:var(--main);}
.footer-x p {
    color:var(--text-dim);
    font-size:13.5px;
    line-height:1.85;
    margin:0 0 16px;
  }
.f-links {
    display:flex;
    flex-wrap:wrap;
    gap:8px 20px;
    margin-bottom:18px;
  }
.f-links a {
    color:var(--text-dim);
    font-size:13.5px;
    text-decoration:none;
    transition:color .2s;
  }
.f-links a:hover {color:var(--main);}
.f-friend {
    color:var(--text-dim);
    font-size:13px;
    padding-top:16px;
    border-top:1px solid var(--line);
  }
.f-friend a {color:var(--text-dim);text-decoration:none;}
.f-friend a:hover {color:var(--main);}
.about-hero {padding:96px 0 42px;}
.about-sec {padding:46px 0;}

/* --- 子页面追加 --- */
.legal-wrap {max-width:900px;margin:0 auto;}
.legal-block {background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;margin-bottom:22px;}
.legal-block h2 {font-size:1.18rem;font-weight:700;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.legal-block h2 i {color:var(--main);font-size:1rem;}
.legal-block h3 {font-size:1rem;font-weight:600;color:var(--main);margin:18px 0 8px;}
.legal-block p {color:var(--text-dim);line-height:1.85;font-size:.94rem;margin-bottom:10px;}
.legal-block ul {list-style:none;padding:0;margin:0 0 10px;}
.legal-block ul li {position:relative;padding-left:20px;color:var(--text-dim);line-height:1.85;font-size:.94rem;margin-bottom:6px;}
.legal-block ul li::before {content:"›";position:absolute;left:4px;top:0;color:var(--accent);font-weight:700;}
.legal-block strong {color:var(--text);font-weight:600;}
.legal-meta {font-family:var(--mono);font-size:.78rem;color:var(--text-dim);letter-spacing:.02em;}
.legal-tip {border-left:3px solid var(--accent);background:rgba(251,146,60,.07);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;margin:14px 0 4px;}
.legal-tip p {margin:0;color:var(--text);font-size:.9rem;}
.legal-toc {display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 30px;}
.legal-toc a {font-family:var(--mono);font-size:.8rem;color:var(--text-dim);border:1px solid var(--line);border-radius:999px;padding:6px 14px;text-decoration:none;transition:all .2s;}
.legal-toc a:hover {color:var(--main);border-color:var(--main);}