:root{
  --primary:#2563eb;
  --accent:#06b6d4;
  --bg:#f8fafc;
  --ink:#0f172a;
  --line:#0f172a;
  --soft:#e2e8f0;
  --muted:#475569;
  --shadow:6px 6px 0 var(--ink);
  --shadow-lg:10px 10px 0 var(--ink);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:14px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
h1,h2,h3,h4,h5,h6{font-weight:800;letter-spacing:-.01em;line-height:1.25;margin:0;}
a{color:var(--primary);text-decoration:none;}
a:hover{color:var(--accent);}
p{margin:0 0 10px;}

/* 滚动进度条 */
#progress-bar{
  position:fixed;top:0;left:0;height:4px;width:0%;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  z-index:9999;transition:width .1s linear;
}

/* 导航 */
.top-nav{
  position:sticky;top:0;z-index:1000;
  background:var(--bg);
  border-bottom:3px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 18px;max-width:1280px;margin:0 auto;
}
.brand{
  font-weight:900;font-size:19px;color:var(--ink);
  display:flex;align-items:center;gap:7px;
  padding:5px 10px;border:3px solid var(--line);
  background:#fff;box-shadow:3px 3px 0 var(--ink);
}
.brand:hover{color:var(--primary);transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink);}
.brand i{color:var(--primary);font-size:17px;}
.nav-links{display:flex;gap:4px;align-items:center;flex-wrap:wrap;}
.nav-links a{
  color:var(--ink);font-weight:600;font-size:13px;
  padding:6px 11px;border:2px solid transparent;
  white-space:nowrap;
}
.nav-links a:hover{border:2px solid var(--line);background:#fff;box-shadow:2px 2px 0 var(--ink);color:var(--primary);}
.nav-toggle{
  display:none;background:#fff;border:3px solid var(--line);
  box-shadow:3px 3px 0 var(--ink);font-size:16px;padding:4px 10px;color:var(--ink);cursor:pointer;
}

/* 通用容器 */
.wrap{max-width:1280px;margin:0 auto;padding:0 18px;}
.sec{padding:44px 0;}
.sec-title{
  font-size:24px;display:flex;align-items:center;gap:10px;
  margin-bottom:6px;
}
.sec-title i{color:var(--primary);font-size:20px;}
.sec-sub{color:var(--muted);font-size:13px;margin-bottom:22px;font-weight:500;}
.tag-kicker{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--primary);
  border:2px solid var(--primary);padding:1px 8px;margin-bottom:12px;background:#fff;
}

/* HERO */
.hero{
  border-bottom:3px solid var(--line);
  background:
    linear-gradient(180deg,#ffffff 0%,var(--bg) 100%);
  padding:40px 0 44px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.35fr .8fr;
  gap:16px;
}
.hero-main{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow-lg);
  padding:26px 24px;
  position:relative;
}
.hero-main::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:5px;
  background:repeating-linear-gradient(90deg,var(--primary) 0 12px,var(--accent) 12px 24px);
}
.hero-main h1{
  font-size:clamp(24px,3.6vw,40px);
  font-weight:900;margin:6px 0 12px;
  min-height:1.3em;
}
.hero-main h1 .cursor{
  display:inline-block;width:3px;height:1em;background:var(--accent);
  vertical-align:-2px;margin-left:3px;animation:blink .8s step-end infinite;
}
@keyframes blink{50%{opacity:0;}}
.hero-main p{color:var(--muted);font-size:14px;max-width:640px;margin-bottom:14px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;}
.hero-tags span{
  font-size:11.5px;font-weight:700;padding:3px 9px;
  border:2px solid var(--line);background:var(--bg);color:var(--ink);
}
.hero-side{
  display:grid;grid-template-rows:1fr 1fr;gap:16px;
}
.side-card{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow);
  padding:16px;
  display:flex;flex-direction:column;justify-content:space-between;
  transition:transform .18s ease,box-shadow .18s ease;
}
.side-card:hover{transform:translate(-2px,-3px);box-shadow:var(--shadow-lg);}
.side-card.accent{background:var(--primary);color:#fff;}
.side-card.accent .num{color:#fff;}
.side-card .num{font-size:30px;font-weight:900;color:var(--primary);line-height:1;}
.side-card .lbl{font-size:12px;font-weight:700;letter-spacing:.04em;margin-top:4px;}
.side-card .desc{font-size:12px;opacity:.85;margin-top:6px;}

/* 手风琴使用说明 */
.acc-item{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow);
  margin-bottom:12px;
}
.acc-head{
  display:flex;align-items:center;gap:12px;justify-content:space-between;
  padding:12px 16px;cursor:pointer;user-select:none;
  border-bottom:2px solid transparent;
}
.acc-item.open .acc-head{border-bottom:2px solid var(--line);background:var(--bg);}
.acc-head-left{display:flex;align-items:center;gap:11px;}
.acc-num{
  font-size:12px;font-weight:900;background:var(--primary);color:#fff;
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  border:2px solid var(--line);flex-shrink:0;
}
.acc-head h3{font-size:15px;font-weight:800;}
.acc-head i.fa-plus,.acc-head i.fa-minus{color:var(--primary);font-size:13px;transition:transform .2s;}
.acc-body{
  max-height:0;overflow:hidden;transition:max-height .32s ease;
}
.acc-inner{padding:14px 16px 16px 53px;color:var(--muted);font-size:13px;}
.acc-inner p:last-child{margin-bottom:0;}

/* BENTO 特色网格 */
.bento{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:minmax(140px,auto);
  gap:16px;
}
.cell{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow);
  padding:18px;
  transition:transform .18s ease,box-shadow .18s ease;
  display:flex;flex-direction:column;
}
.cell:hover{transform:translate(-2px,-3px);box-shadow:var(--shadow-lg);}
.cell-title{font-size:15px;font-weight:800;display:flex;align-items:center;gap:8px;margin-bottom:8px;}
.cell-title i{color:var(--primary);font-size:15px;}
.cell p{font-size:12.5px;color:var(--muted);margin:0;}
.cell ul{list-style:none;padding:0;margin:8px 0 0;}
.cell ul li{
  font-size:12.5px;color:var(--muted);padding:4px 0 4px 18px;position:relative;
  border-bottom:1px dashed var(--soft);
}
.cell ul li:last-child{border-bottom:none;}
.cell ul li::before{
  content:"";position:absolute;left:3px;top:11px;
  width:6px;height:6px;background:var(--accent);
}
.cell.b-wide{grid-column:span 2;}
.cell.b-tall{grid-row:span 2;}
.cell.b-blue{background:var(--primary);color:#fff;}
.cell.b-blue .cell-title,.cell.b-blue .cell-title i{color:#fff;}
.cell.b-blue p,.cell.b-blue ul li{color:#dbeafe;}
.cell.b-blue ul li::before{background:#fff;}
.cell.b-cyan{background:var(--accent);color:#052e35;}
.cell.b-cyan .cell-title,.cell.b-cyan .cell-title i{color:#052e35;}
.cell.b-cyan p,.cell.b-cyan ul li{color:#0e4a55;}
.cell.b-cyan ul li::before{background:#052e35;}
.cell.b-fill{grid-column:span 2;grid-row:span 1;}
.poster-row{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:auto;padding-top:12px;
}
.poster{
  aspect-ratio:3/4;border:2px solid var(--line);background:var(--soft);
  position:relative;overflow:hidden;
}
.poster img{
  width:100%;height:100%;object-fit:cover;display:block;
  opacity:0;transition:opacity .5s ease;
}
.poster img.loaded{opacity:1;}
.poster::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,#eef2f7 8%,#e2e8f0 18%,#eef2f7 33%);
  background-size:200% 100%;
  animation:shimmer 1.4s linear infinite;
  z-index:1;transition:opacity .4s;
}
.poster.done::after{opacity:0;visibility:hidden;}
@keyframes shimmer{to{background-position:-200% 0;}}

/* 长文 */
.article-box{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow-lg);
  padding:26px 26px 20px;
}
.article-box h2{font-size:22px;margin-bottom:14px;}
.article-box h3{font-size:16px;margin:20px 0 8px;padding-left:11px;border-left:4px solid var(--accent);}
.article-box p{font-size:13.5px;color:var(--muted);margin-bottom:11px;}
.article-box strong{color:var(--ink);font-weight:700;}
.pull{
  border:2px solid var(--line);background:var(--bg);
  padding:12px 15px;margin:16px 0;font-size:13px;font-weight:600;color:var(--ink);
  border-left:6px solid var(--primary);
}
.art-meta{
  display:flex;flex-wrap:wrap;gap:14px;font-size:11.5px;font-weight:700;
  color:var(--primary);text-transform:uppercase;letter-spacing:.06em;
  margin-bottom:14px;padding-bottom:12px;border-bottom:2px solid var(--soft);
}

/* FAQ */
.faq-item{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow);
  margin-bottom:12px;
}
.faq-q{
  padding:13px 16px;font-weight:800;font-size:14px;cursor:pointer;
  display:flex;align-items:flex-start;gap:10px;justify-content:space-between;
}
.faq-q span{flex:1;}
.faq-q i{color:var(--accent);font-size:13px;margin-top:3px;transition:transform .2s;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 16px 15px;font-size:13px;color:var(--muted);}
.faq-a-inner p:last-child{margin-bottom:0;}

/* CTA */
.cta{
  border:3px solid var(--line);box-shadow:var(--shadow-lg);
  background:var(--ink);color:#fff;padding:32px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
  border:14px solid rgba(37,99,235,.5);transform:rotate(45deg);
}
.cta h2{font-size:23px;margin-bottom:8px;position:relative;}
.cta p{color:#cbd5e1;font-size:13px;margin:0;max-width:560px;position:relative;}
.btn-hard{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#052e35;font-weight:900;font-size:14px;
  padding:11px 20px;border:3px solid #fff;box-shadow:5px 5px 0 var(--primary);
  position:relative;transition:transform .15s ease,box-shadow .15s ease;
  white-space:nowrap;
}
.btn-hard:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--primary);color:#052e35;}

/* 友链 & 页脚 */
.friend-links{
  border:3px solid var(--line);background:#fff;box-shadow:var(--shadow);
  padding:18px;
  margin-bottom:26px;
}
.friend-links h3{font-size:14px;display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.friend-links h3 i{color:var(--primary);}
.fl-line{font-size:12.5px;color:var(--muted);word-break:break-all;border-top:2px dashed var(--soft);padding-top:10px;}
footer{
  border-top:3px solid var(--line);background:#fff;
  padding:26px 0 20px;font-size:12.5px;color:var(--muted);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:22px;}
.foot-grid h4{font-size:13px;color:var(--ink);margin-bottom:8px;font-weight:800;}
.foot-grid ul{list-style:none;padding:0;margin:0;}
.foot-grid ul li{margin-bottom:5px;}
.foot-grid ul a{color:var(--muted);font-size:12.5px;}
.foot-grid ul a:hover{color:var(--primary);}
.foot-bottom{
  border-top:2px solid var(--soft);margin-top:20px;padding-top:14px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:12px;
}
.brand-foot{font-weight:900;color:var(--ink);font-size:16px;display:flex;align-items:center;gap:7px;margin-bottom:8px;}
.brand-foot i{color:var(--primary);}

/* 渐显 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;}
.reveal.in{opacity:1;transform:none;}

@media(max-width:991px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .cell.b-wide,.cell.b-fill{grid-column:span 2;}
  .cell.b-tall{grid-row:span 1;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:767px){
  .nav-toggle{display:block;}
  .nav-links{
    display:none;width:100%;flex-direction:column;align-items:stretch;
    margin-top:10px;gap:2px;
  }
  .nav-links.show{display:flex;}
  .nav-links a{border:2px solid var(--soft);}
  .nav-inner{flex-wrap:wrap;}
  .hero-side{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .cell.b-wide,.cell.b-fill,.cell.b-tall{grid-column:span 1;grid-row:span 1;}
  .acc-inner{padding-left:16px;}
  .cta{padding:24px 18px;}
  .article-box{padding:18px 16px;}
  .foot-grid{grid-template-columns:1fr;}
  .sec{padding:32px 0;}
}

/* --- 子页面追加 --- */
.about-hero { padding: 56px 0 28px; }
.about-hero h1 { font-size: clamp(28px, 5vw, 46px); font-weight: 900; line-height: 1.2; letter-spacing: -.5px; }
.about-hero p.lead-txt { color: var(--muted); font-size: 17px; max-width: 760px; margin-top: 14px; line-height: 1.8; }
.story-card, .fact-card, .rule-card, .faq-card {
    background: #fff; border: 2px solid var(--line); border-radius: 14px;
    box-shadow: var(--shadow); padding: 26px 24px; height: 100%;
    transition: transform .18s ease, box-shadow .18s ease;
  }
.story-card:hover, .fact-card:hover, .rule-card:hover {
    transform: translate(-2px, -2px); box-shadow: var(--shadow-lg);
  }
.fact-num { font-size: 34px; font-weight: 900; color: var(--primary); line-height: 1; }
.fact-label { color: var(--muted); font-size: 14px; margin-top: 8px; }
.story-card h3, .rule-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 10px; }
.story-card p, .rule-card p { color: var(--muted); font-size: 15px; line-height: 1.85; margin: 0; }
.step-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 2px dashed var(--soft); }
.step-item:last-child { border-bottom: none; }
.step-no {
    flex: 0 0 44px; width: 44px; height: 44px; border-radius: 12px;
    background: var(--primary); color: #fff; font-weight: 900; font-size: 18px;
    display: flex; align-items: center; justify-content: center; border: 2px solid var(--line);
  }
.step-item h3 { font-size: 17px; font-weight: 800; margin: 0 0 6px; }
.step-item p { color: var(--muted); font-size: 14.5px; line-height: 1.8; margin: 0; }
.faq-card { box-shadow: none; margin-bottom: 16px; }
.faq-card h3 { font-size: 16.5px; font-weight: 800; margin-bottom: 8px; }
.faq-card p { color: var(--muted); font-size: 14.5px; line-height: 1.8; margin: 0; }
.quote-band {
    background: var(--primary); color: #fff; border: 2px solid var(--line);
    border-radius: 16px; box-shadow: var(--shadow); padding: 30px 28px;
    font-size: clamp(17px, 2.4vw, 21px); font-weight: 700; line-height: 1.7;
  }
.quote-band span { color: #c7f9ff; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 22px; }
.btn-solid, .btn-ghost {
    display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
    font-weight: 800; font-size: 15px; padding: 12px 22px; border-radius: 12px;
    border: 2px solid var(--line); transition: transform .15s ease, box-shadow .15s ease;
  }
.btn-solid { background: var(--ink); color: #fff; box-shadow: var(--shadow); }
.btn-ghost { background: #fff; color: var(--ink); box-shadow: var(--shadow); }
.btn-solid:hover, .btn-ghost:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-lg); }
.btn-solid:hover { color: #fff; }
.btn-ghost:hover { color: var(--ink); }
.about-hero { padding: 36px 0 18px; }
.story-card, .fact-card, .rule-card { padding: 20px 18px; }

/* --- 子页面追加 --- */
/* 本页专属少量样式 */
  .disc-hero {
    padding:56px 0 40px;
    border-bottom:3px solid var(--line);
    background:
      radial-gradient(circle at 90% 10%, rgba(6,182,212,.16), transparent 45%),
      radial-gradient(circle at 5% 90%, rgba(37,99,235,.14), transparent 45%),
      var(--bg);
  }
.disc-hero h1 {
    font-size:clamp(1.8rem,4.2vw,3rem);
    font-weight:900;
    letter-spacing:-.02em;
    line-height:1.2;
    margin:14px 0 16px;
  }
.disc-hero p {
    color:var(--muted);
    max-width:680px;
    font-size:1.02rem;
    line-height:1.8;
    margin:0;
  }
.notice-card {
    background:#fff;
    border:3px solid var(--line);
    box-shadow:var(--shadow);
    padding:24px 26px;
    margin-bottom:26px;
  }
.notice-card h2 {
    font-size:1.25rem;
    font-weight:800;
    display:flex;
    align-items:center;
    gap:10px;
    margin:0 0 14px;
    padding-bottom:12px;
    border-bottom:2px dashed var(--soft);
  }
.notice-card h2 i { color:var(--primary); }
.notice-card p {
    color:var(--muted);
    line-height:1.85;
    margin-bottom:12px;
    font-size:.98rem;
  }
.notice-card p:last-child { margin-bottom:0; }
.notice-card ul {
    padding-left:20px;
    color:var(--muted);
    line-height:1.85;
    font-size:.98rem;
    margin:0;
  }
.notice-card li { margin-bottom:8px; }
.notice-card li strong { color:var(--ink); }
.notice-tag {
    display:inline-block;
    background:var(--accent);
    color:#fff;
    font-size:.72rem;
    font-weight:800;
    letter-spacing:.08em;
    padding:4px 12px;
    border:2px solid var(--line);
    box-shadow:3px 3px 0 var(--ink);
  }
.toc-box {
    background:#fff;
    border:3px solid var(--line);
    box-shadow:var(--shadow);
    padding:22px 24px;
    position:sticky;
    top:18px;
  }
.toc-box h3 {
    font-size:1rem;
    font-weight:800;
    margin:0 0 14px;
    display:flex;
    align-items:center;
    gap:8px;
  }
.toc-box h3 i { color:var(--accent); }
.toc-box a {
    display:block;
    color:var(--muted);
    text-decoration:none;
    font-size:.92rem;
    padding:9px 10px;
    border-left:3px solid var(--soft);
    margin-bottom:4px;
    transition:.18s;
  }
.toc-box a:hover {
    color:var(--primary);
    border-left-color:var(--primary);
    background:rgba(37,99,235,.06);
  }
.disc-note {
    background:rgba(6,182,212,.1);
    border:2px solid var(--accent);
    padding:16px 18px;
    font-size:.92rem;
    color:var(--ink);
    line-height:1.8;
    margin-top:4px;
  }
.disc-note i { color:var(--accent); margin-right:6px; }
.toc-box { position:static; margin-bottom:26px; }

/* --- 子页面追加 --- */
/* 仅本页需要的少量补充样式,复用站点配色变量 */
  body {background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;}
.guide-step {position:relative;background:#fff;border:2px solid var(--line);box-shadow:var(--shadow);padding:22px 22px 20px;height:100%;}
.guide-step .step-no {display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:2px solid var(--line);background:var(--accent);color:#fff;font-weight:800;margin-bottom:12px;}
.guide-step h3 {font-size:1.05rem;font-weight:800;margin:0 0 8px;}
.guide-step p {font-size:.92rem;line-height:1.75;color:var(--muted);margin:0;}
.guide-step .tip {display:block;margin-top:10px;font-size:.82rem;color:var(--primary);font-weight:600;}
.faq-item h3 {font-size:1rem;font-weight:800;margin:0 0 8px;display:flex;gap:10px;align-items:flex-start;}
.faq-item h3 i {color:var(--primary);margin-top:3px;}
.faq-item p {font-size:.92rem;line-height:1.8;color:var(--muted);margin:0;}
.quick-link {display:flex;align-items:center;gap:12px;background:#fff;border:2px solid var(--line);box-shadow:var(--shadow);padding:16px 18px;text-decoration:none;color:var(--ink);font-weight:700;transition:transform .15s ease;height:100%;}
.quick-link:hover {transform:translate(-3px,-3px);box-shadow:var(--shadow-lg);color:var(--primary);}
.quick-link i {color:var(--accent);font-size:1.1rem;}
.quick-link small {display:block;font-weight:400;color:var(--muted);font-size:.8rem;margin-top:2px;}
.note-box {background:#fff;border-left:6px solid var(--accent);box-shadow:var(--shadow);padding:18px 20px;font-size:.92rem;line-height:1.8;color:var(--muted);}
.note-box strong {color:var(--ink);}
.shortcut-tbl {width:100%;border-collapse:collapse;background:#fff;border:2px solid var(--line);box-shadow:var(--shadow);font-size:.9rem;}
.shortcut-tbl th,.shortcut-tbl td {padding:12px 14px;border-bottom:1px solid var(--soft);text-align:left;}
.shortcut-tbl th {background:var(--primary);color:#fff;font-weight:700;}
.shortcut-tbl tr:last-child td {border-bottom:none;}
.shortcut-tbl td:first-child {font-weight:700;white-space:nowrap;}