:root{
  --primary:#2563eb;
  --accent:#06b6d4;
  --bg:#f4f8ff;
  --text:#0f1e3d;
  --line:#dbe6f7;
  --card:#ffffff;
  --muted:#5b6b8c;
  --radius:8px;
  --shadow:0 1px 2px rgba(15,30,61,.05),0 4px 14px rgba(15,30,61,.05);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:15.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{font-weight:900;letter-spacing:-.4px;line-height:1.28;margin:0}
a{text-decoration:none;color:inherit}
.mono{font-family:'SFMono-Regular',Consolas,'Roboto Mono',monospace;font-variant-numeric:tabular-nums}
.wrap{max-width:1220px;margin:0 auto;padding:0 18px}

/* ============ NAV ============ */
.topnav{
  position:sticky;top:0;z-index:1000;
  background:rgba(244,248,255,.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{
  font-weight:900;font-size:1.22rem;letter-spacing:-.5px;
  display:flex;align-items:center;gap:8px;color:var(--text);white-space:nowrap;
}
.brand .dot{
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:inline-block;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-links a{
  font-size:.92rem;font-weight:600;color:var(--muted);
  padding:7px 12px;border-radius:var(--radius);transition:.18s;
  white-space:nowrap;
}
.nav-links a:hover,.nav-links a.active{color:var(--primary);background:#e7f0ff}
.nav-toggle{
  display:none;margin-left:auto;background:none;border:1px solid var(--line);
  border-radius:var(--radius);width:42px;height:38px;color:var(--text);font-size:1.05rem;
}
@media(max-width:991px){
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;left:0;right:0;top:64px;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:8px;
    border-bottom:1px solid var(--line);display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 14px}
}

/* ============ HERO ============ */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#eaf2ff 0%,transparent 100%);
}
.hero-parallax{
  position:absolute;inset:-15% -5% auto -5%;height:150%;
  background:
    radial-gradient(circle at 12% 30%,rgba(37,99,235,.16),transparent 45%),
    radial-gradient(circle at 82% 18%,rgba(6,182,212,.18),transparent 42%),
    radial-gradient(circle at 55% 78%,rgba(37,99,235,.09),transparent 50%);
  will-change:transform;z-index:0;
}
.hero-inner{position:relative;z-index:1;padding:68px 0 56px;text-align:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:100px;
  padding:6px 16px;font-size:.82rem;font-weight:600;color:var(--primary);
  box-shadow:var(--shadow);margin-bottom:22px;
}
.hero h1{
  font-size:clamp(1.9rem,4.6vw,3.35rem);
  max-width:900px;margin:0 auto 18px;
}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead-txt{
  max-width:660px;margin:0 auto 30px;color:var(--muted);font-size:1.02rem;font-weight:400;
}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 28px;border-radius:var(--radius);font-weight:700;font-size:.95rem;
  transition:.2s;border:1px solid transparent;
}
.btn-main{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(37,99,235,.28)}
.btn-main:hover{background:#1d4fd0;transform:translateY(-2px);color:#fff}
.btn-ghost{background:#fff;color:var(--text);border-color:var(--line);box-shadow:var(--shadow)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.hero-stats{
  display:flex;gap:36px;justify-content:center;flex-wrap:wrap;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-stats div{text-align:center}
.hero-stats .num{font-size:1.5rem;font-weight:800;color:var(--primary);line-height:1.2}
.hero-stats .lbl{font-size:.79rem;color:var(--muted);font-weight:500}

/* ============ SECTION BASE ============ */
section{padding:54px 0}
.sec-line{border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.sec-head h2{font-size:1.55rem}
.sec-head h2 .ico{color:var(--primary);margin-right:9px}
.sec-sub{color:var(--muted);font-size:.88rem;font-weight:500;margin:6px 0 0}
.sec-more{
  font-size:.86rem;font-weight:700;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
}
.sec-more:hover{gap:10px;transition:.2s}

/* ============ CATEGORY ENTRY ============ */
.cat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
@media(max-width:900px){.cat-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:520px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
.cat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 14px;text-align:center;transition:.22s;box-shadow:var(--shadow);
}
.cat-card:hover{border-color:var(--primary);transform:scale(1.035);box-shadow:0 8px 22px rgba(37,99,235,.12)}
.cat-card i{font-size:1.32rem;color:var(--primary);display:block;margin-bottom:9px}
.cat-card .name{font-weight:700;font-size:.94rem}
.cat-card .cnt{font-size:.75rem;color:var(--muted);font-weight:500}

/* ============ POSTER GRID ============ */
.poster-grid{display:grid;gap:18px;width:100%}
.pg-6{grid-template-columns:repeat(6,1fr)}
.pg-5{grid-template-columns:repeat(5,1fr)}
.pg-4{grid-template-columns:repeat(4,1fr)}
.pg-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:1100px){.pg-6{grid-template-columns:repeat(4,1fr)}.pg-5{grid-template-columns:repeat(4,1fr)}}
@media(max-width:820px){.pg-6,.pg-5{grid-template-columns:repeat(3,1fr)}.pg-4{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.pg-6,.pg-5,.pg-4,.pg-3{grid-template-columns:repeat(2,1fr)}}

.poster{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;position:relative;transition:.22s;box-shadow:var(--shadow);
  display:block;
}
.poster:hover{transform:scale(1.028);border-color:var(--primary);box-shadow:0 10px 26px rgba(37,99,235,.16);z-index:2}
.poster .thumb{position:relative;width:100%;aspect-ratio:2/3;overflow:hidden;background:#dde8f8}
.poster .thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:.35s}
.poster:hover .thumb img{transform:scale(1.05)}
.corner-tag{
  position:absolute;top:0;left:0;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-size:.68rem;font-weight:700;
  padding:3px 9px;border-bottom-right-radius:8px;letter-spacing:.2px;
}
.score-badge{
  position:absolute;right:7px;bottom:7px;
  background:rgba(15,30,61,.82);color:#ffd75e;
  font-size:.75rem;font-weight:800;padding:2px 8px;border-radius:6px;
  display:flex;align-items:center;gap:3px;
}
.score-badge i{font-size:.63rem}
.poster .meta{padding:11px 12px 13px}
.poster .meta .tit{
  font-weight:700;font-size:.9rem;line-height:1.4;
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.poster .meta .sub{
  font-size:.75rem;color:var(--muted);margin-top:4px;
  display:flex;justify-content:space-between;gap:6px;
}
.hot-num{color:var(--accent);font-weight:700}

/* ============ RANKING ============ */
.rank-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:8px 22px;box-shadow:var(--shadow);
}
.rank-row{
  display:flex;align-items:center;gap:16px;padding:14px 0;
  border-bottom:1px solid var(--line);transition:.18s;
}
.rank-row:last-child{border-bottom:none}
.rank-row:hover{background:#f7fbff;padding-left:8px}
.rank-no{
  width:30px;height:30px;flex:0 0 30px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:.85rem;background:#e8f0ff;color:var(--primary);
}
.rank-row:nth-child(1) .rank-no{background:var(--primary);color:#fff}
.rank-row:nth-child(2) .rank-no{background:#3b82f6;color:#fff}
.rank-row:nth-child(3) .rank-no{background:var(--accent);color:#fff}
.rank-name{font-weight:700;font-size:.95rem;flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-tag{
  font-size:.72rem;color:var(--muted);background:#eef4ff;border-radius:6px;
  padding:2px 8px;white-space:nowrap;font-weight:600;
}
.rank-score{font-weight:800;color:var(--primary);font-size:.9rem;white-space:nowrap}
.rank-arrow{color:var(--line);font-size:.8rem}
@media(max-width:520px){.rank-tag{display:none}}

/* ============ TOPIC ============ */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.topic-grid{grid-template-columns:1fr}}
.topic-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:.22s;box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.topic-card:hover{border-color:var(--accent);transform:scale(1.02)}
.topic-card .tno{
  font-size:2.6rem;font-weight:900;color:#e3eefd;line-height:1;
  position:absolute;right:18px;top:14px;
}
.topic-card h3{font-size:1.1rem;margin-bottom:10px}
.topic-card p{color:var(--muted);font-size:.88rem;margin:0 0 14px}
.topic-card .tags{display:flex;gap:7px;flex-wrap:wrap}
.topic-card .tags span{
  font-size:.74rem;background:#eef4ff;color:var(--primary);
  padding:3px 9px;border-radius:6px;font-weight:600;
}

/* ============ STEPS ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
@media(max-width:800px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:460px){.steps{grid-template-columns:1fr}}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 18px;position:relative;box-shadow:var(--shadow);
}
.step .sno{
  width:26px;height:26px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:.78rem;font-weight:800;margin-bottom:11px;
}
.step h4{font-size:.98rem;margin-bottom:7px}
.step p{font-size:.84rem;color:var(--muted);margin:0}

/* ============ FAQ ============ */
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden;
}
.faq-q{
  padding:16px 20px;font-weight:700;font-size:.95rem;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-q i{color:var(--primary);font-size:.8rem;transition:.25s}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{display:none;padding:0 20px 17px;color:var(--muted);font-size:.89rem}
.faq-item.open .faq-a{display:block}

/* ============ FRIEND LINKS ============ */
.friend-box{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;box-shadow:var(--shadow);
}
.friend-box h3{font-size:1.02rem;margin-bottom:12px}
.friend-links{display:flex;flex-wrap:wrap;gap:10px;font-size:.86rem;color:var(--muted)}
.friend-links a{color:var(--muted);padding:3px 10px;border:1px solid var(--line);border-radius:6px;transition:.18s}
.friend-links a:hover{color:var(--primary);border-color:var(--primary);background:#f2f8ff}

/* ============ FOOTER ============ */
footer{
  background:#fff;border-top:1px solid var(--line);margin-top:20px;padding:46px 0 30px;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.foot-grid{grid-template-columns:1fr}}
.foot-brand{font-weight:900;font-size:1.15rem;display:flex;align-items:center;gap:8px;margin-bottom:12px}
.foot-desc{color:var(--muted);font-size:.85rem;line-height:1.9;max-width:330px}
.foot-col h5{font-size:.88rem;margin-bottom:12px;color:var(--text)}
.foot-col a{display:block;font-size:.85rem;color:var(--muted);padding:3px 0;transition:.16s}
.foot-col a:hover{color:var(--primary);padding-left:4px}
.foot-bottom{
  border-top:1px solid var(--line);margin-top:34px;padding-top:20px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.8rem;color:var(--muted);
}

/* ============ BACK TO TOP ============ */
#toTop{
  position:fixed;right:22px;bottom:24px;z-index:1200;
  width:44px;height:44px;border-radius:50%;border:none;
  background:var(--primary);color:#fff;font-size:1rem;
  box-shadow:0 8px 22px rgba(37,99,235,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);transition:.28s;
  cursor:pointer;
}
#toTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#toTop:hover{background:#1d4fd0}

/* --- 子页面追加 --- */
/* 本页专属少量样式，配色沿用站点变量 */
  .about-hero {
    background:linear-gradient(180deg,var(--card) 0%,var(--bg) 100%);
    border-bottom:1px solid var(--line);
    padding:64px 0 52px;
  }
.about-hero h1 {
    font-size:clamp(26px,4vw,42px);
    font-weight:900;
    line-height:1.25;
    color:var(--text);
    margin:14px 0 18px;
    letter-spacing:-.02em;
  }
.about-hero h1 em {
    font-style:normal;
    color:var(--primary);
  }
.about-hero p.lead {
    color:var(--muted);
    font-size:16px;
    line-height:1.9;
    max-width:760px;
    margin-bottom:0;
  }
.about-badge {
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:rgba(37,99,235,.08);
    color:var(--primary);
    border:1px solid rgba(37,99,235,.2);
    border-radius:999px;
    padding:6px 14px;
    font-size:13px;
    font-weight:600;
  }
.about-stat {
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:28px;
  }
.about-stat .item {
    flex:1 1 150px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:16px 18px;
    box-shadow:var(--shadow);
  }
.about-stat .item b {
    display:block;
    font-size:22px;
    font-weight:800;
    color:var(--primary);
    letter-spacing:-.02em;
  }
.about-stat .item span {
    display:block;
    font-size:13px;
    color:var(--muted);
    margin-top:4px;
  }
.block {padding:56px 0;}
.block + .block {padding-top:0;}
.block h2 {
    font-size:clamp(20px,2.6vw,28px);
    font-weight:800;
    color:var(--text);
    letter-spacing:-.01em;
    margin-bottom:10px;
  }
.block h2 .accent {
    color:var(--accent);
  }
.block .sub {
    color:var(--muted);
    font-size:15px;
    line-height:1.9;
    max-width:820px;
    margin-bottom:26px;
  }
.info-card {
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:24px 22px;
    box-shadow:var(--shadow);
    height:100%;
    transition:.2s ease;
  }
.info-card:hover {
    border-color:rgba(37,99,235,.35);
    transform:translateY(-2px);
  }
.info-card .ico {
    width:42px;height:42px;
    display:flex;align-items:center;justify-content:center;
    border-radius:10px;
    background:rgba(6,182,212,.12);
    color:var(--accent);
    font-size:18px;
    margin-bottom:14px;
  }
.info-card h3 {
    font-size:16px;
    font-weight:700;
    color:var(--text);
    margin-bottom:8px;
    line-height:1.5;
  }
.info-card p {
    font-size:14px;
    line-height:1.85;
    color:var(--muted);
    margin:0;
  }
.timeline {
    position:relative;
    padding-left:26px;
    border-left:2px solid var(--line);
    margin-top:8px;
  }
.timeline .node {
    position:relative;
    padding-bottom:26px;
  }
.timeline .node:last-child {padding-bottom:0;}
.timeline .node::before {
    content:"";
    position:absolute;
    left:-33px;top:4px;
    width:12px;height:12px;
    border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 0 4px rgba(37,99,235,.14);
  }
.timeline .node h4 {
    font-size:15px;
    font-weight:700;
    color:var(--text);
    margin:0 0 6px;
  }
.timeline .node p {
    font-size:14px;
    line-height:1.85;
    color:var(--muted);
    margin:0;
  }
.faq-item h4 {
    font-size:15px;
    font-weight:700;
    color:var(--text);
    margin:0 0 8px;
    display:flex;
    gap:8px;
    align-items:flex-start;
  }
.faq-item h4 i {
    color:var(--primary);
    font-size:13px;
    margin-top:4px;
  }
.faq-item p {
    font-size:14px;
    line-height:1.85;
    color:var(--muted);
    margin:0;
  }
.note-box {
    background:rgba(37,99,235,.05);
    border:1px solid rgba(37,99,235,.18);
    border-radius:var(--radius);
    padding:20px 22px;
    font-size:14px;
    line-height:1.9;
    color:var(--text);
  }
.note-box a {color:var(--primary);font-weight:600;text-decoration:none;}
.note-box a:hover {text-decoration:underline;}
.link-chips {display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.link-chips a {
    display:inline-flex;align-items:center;gap:7px;
    padding:8px 16px;
    border-radius:999px;
    background:var(--card);
    border:1px solid var(--line);
    color:var(--text);
    font-size:14px;
    font-weight:600;
    text-decoration:none;
    transition:.18s ease;
  }
.link-chips a:hover {
    background:var(--primary);
    border-color:var(--primary);
    color:#fff;
  }
.about-hero {padding:44px 0 38px;}
.block {padding:40px 0;}

/* --- 子页面追加 --- */
.doc-wrap {max-width:860px;margin:0 auto;}
.doc-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 30px;margin-bottom:22px;}
.doc-card h2 {font-size:1.28rem;font-weight:800;color:var(--text);margin:0 0 14px;display:flex;align-items:center;gap:10px;}
.doc-card h2 .tag {display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background:rgba(37,99,235,.1);color:var(--primary);font-size:.9rem;flex:0 0 auto;}
.doc-card p {color:var(--muted);line-height:1.85;font-size:.96rem;margin:0 0 12px;}
.doc-card p:last-child {margin-bottom:0;}
.doc-card ul {margin:0 0 12px;padding-left:1.2em;color:var(--muted);line-height:1.85;font-size:.96rem;}
.doc-card li {margin-bottom:6px;}
.doc-card strong {color:var(--text);font-weight:600;}
.doc-card a {color:var(--primary);text-decoration:none;border-bottom:1px dashed rgba(37,99,235,.4);}
.doc-card a:hover {color:var(--accent);border-bottom-color:var(--accent);}
.doc-meta {display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.82rem;color:var(--muted);margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);}
.doc-meta .mono {font-family:'Inter',monospace;}
.doc-toc {background:linear-gradient(180deg,rgba(37,99,235,.06),rgba(6,182,212,.05));border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin-bottom:22px;}
.doc-toc b {display:block;color:var(--text);font-size:.92rem;margin-bottom:10px;}
.doc-toc ol {margin:0;padding-left:1.3em;color:var(--muted);font-size:.9rem;line-height:1.9;}
.doc-toc a {color:var(--primary);text-decoration:none;}
.doc-toc a:hover {color:var(--accent);}
.doc-hero {padding:44px 0 26px;}
.doc-hero h1 {font-size:2rem;font-weight:900;color:var(--text);margin:0 0 12px;letter-spacing:-.02em;}
.doc-hero p {color:var(--muted);font-size:1rem;line-height:1.8;margin:0;max-width:720px;}
.doc-card {padding:20px 18px;}
.doc-hero h1 {font-size:1.55rem;}

/* --- 子页面追加 --- */
/* 本页专属：指南页正文排版与步骤条 */
  .guide-hero { padding: 56px 0 8px; }
.guide-hero h1 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 800; letter-spacing: -.02em; color: var(--text); margin: 14px 0 12px; }
.guide-hero p.lead-txt { color: var(--muted); max-width: 760px; font-size: 1.02rem; line-height: 1.85; margin: 0; }
.guide-wrap { padding: 32px 0 64px; }
.guide-toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 22px; }
.guide-toc h3 { font-size: .95rem; font-weight: 700; color: var(--text); margin: 0 0 12px; letter-spacing: .02em; }
.guide-toc ol { margin: 0; padding-left: 18px; }
.guide-toc li { margin: 7px 0; font-size: .92rem; }
.guide-toc a { color: var(--muted); text-decoration: none; transition: color .18s; }
.guide-toc a:hover { color: var(--primary); }
.g-block { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px 28px; margin-bottom: 22px; }
.g-block h2 { font-size: 1.24rem; font-weight: 800; color: var(--text); margin: 0 0 14px; letter-spacing: -.01em; }
.g-block h3 { font-size: 1.02rem; font-weight: 700; color: var(--text); margin: 20px 0 8px; }
.g-block p { color: var(--muted); line-height: 1.9; font-size: .95rem; margin: 0 0 12px; }
.g-block ul, .g-block ol { color: var(--muted); line-height: 1.9; font-size: .95rem; padding-left: 20px; margin: 0 0 12px; }
.g-block li { margin: 6px 0; }
.g-block strong { color: var(--text); font-weight: 600; }
.g-tip { display: flex; gap: 12px; background: #eef4ff; border: 1px solid var(--line); border-left: 3px solid var(--primary); border-radius: 6px; padding: 13px 16px; margin: 16px 0 4px; }
.g-tip i { color: var(--primary); margin-top: 3px; font-size: .95rem; }
.g-tip p { margin: 0; font-size: .9rem; color: var(--muted); }
.step-list { counter-reset: gs; list-style: none; padding: 0; margin: 0; }
.step-list li { counter-increment: gs; position: relative; padding-left: 44px; margin: 0 0 16px; color: var(--muted); line-height: 1.85; font-size: .95rem; }
.step-list li::before { content: counter(gs); position: absolute; left: 0; top: 1px; width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; font-size: .82rem; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.step-list li strong { display: block; color: var(--text); margin-bottom: 2px; }
.qa-item { border-top: 1px solid var(--line); padding: 15px 0; }
.qa-item:first-of-type { border-top: none; padding-top: 0; }
.qa-item .q { font-weight: 700; color: var(--text); font-size: .96rem; margin: 0 0 6px; display: flex; gap: 8px; }
.qa-item .q i { color: var(--accent); margin-top: 3px; font-size: .82rem; }
.qa-item .a { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.85; padding-left: 22px; }
.term-table { width: 100%; border-collapse: collapse; font-size: .92rem; margin: 6px 0 4px; }
.term-table th, .term-table td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.term-table th { color: var(--text); font-weight: 700; background: #f8fbff; white-space: nowrap; }
.term-table td { color: var(--muted); line-height: 1.75; }
.term-table tr:last-child td, .term-table tr:last-child th { border-bottom: none; }
.g-cta { background: linear-gradient(135deg, #eaf1ff 0%, #e6fbff 100%); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; text-align: center; }
.g-cta h3 { font-size: 1.06rem; font-weight: 800; color: var(--text); margin: 0 0 8px; }
.g-cta p { color: var(--muted); font-size: .92rem; margin: 0 0 16px; }
.g-cta .btn-main { margin: 0 6px 6px; display: inline-block; }
.g-block { padding: 20px 18px; }
.guide-hero { padding: 36px 0 4px; }
.term-table th, .term-table td { padding: 9px 8px; font-size: .86rem; }

/* --- 子页面追加 --- */
.sm-hero {padding:56px 0 28px;}
.sm-hero h1 {font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.5px;margin:0 0 12px;}
.sm-hero p {color:var(--muted);max-width:760px;line-height:1.9;margin:0;font-size:15px;}
.sm-crumb {font-size:13px;color:var(--muted);margin-bottom:14px;}
.sm-crumb a {color:var(--muted);text-decoration:none;}
.sm-crumb a:hover {color:var(--primary);}
.sm-block {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 26px 22px;margin-bottom:22px;}
.sm-block h2 {font-size:19px;font-weight:700;margin:0 0 6px;display:flex;align-items:center;gap:10px;}
.sm-block h2 i {color:var(--primary);font-size:16px;}
.sm-block .sm-note {color:var(--muted);font-size:13.5px;line-height:1.8;margin:0 0 18px;}
.sm-list {display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px 18px;margin:0;padding:0;list-style:none;}
.sm-list li a {display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:6px;color:var(--text);text-decoration:none;font-size:14.5px;border:1px solid transparent;transition:.18s;}
.sm-list li a:hover {background:rgba(37,99,235,.06);border-color:var(--line);color:var(--primary);}
.sm-list li a i {color:var(--accent);font-size:12px;flex:0 0 auto;}
.sm-list li a .sm-tag {margin-left:auto;font-size:11.5px;color:var(--muted);background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:1px 8px;}
.sm-pages .sm-block h2 i {color:var(--accent);}
.sm-tip {background:linear-gradient(135deg,rgba(37,99,235,.07),rgba(6,182,212,.07));border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:22px;}
.sm-tip h2 {font-size:17px;font-weight:700;margin:0 0 10px;}
.sm-tip p {color:var(--muted);font-size:14px;line-height:1.9;margin:0 0 8px;}
.sm-tip p:last-child {margin-bottom:0;}
.sm-tip code {background:#fff;border:1px solid var(--line);border-radius:4px;padding:1px 6px;font-family:'Inter',monospace;font-size:12.5px;color:var(--primary);}
.sm-stat {display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:26px;}
.sm-stat div {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;text-align:center;}
.sm-stat div b {display:block;font-size:22px;font-weight:800;color:var(--primary);letter-spacing:-.5px;}
.sm-stat div span {font-size:12.5px;color:var(--muted);}
.sm-block {padding:20px 16px 16px;}
.sm-hero {padding:36px 0 20px;}