:root{
  --bg0:#020617;
  --bg1:#0f172a;
  --text:#f1f5ff;
  --muted:#94a3b8;
  --line:rgba(148,163,184,.18);
  --blue:#3b82f6;
  --indigo:#6366f1;
  --purple:#a855f7;
  --pink:#ec4899;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{
  font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  color:var(--text);
  background:var(--bg0);
  background-image:
    radial-gradient(ellipse 900px 480px at 12% -8%, rgba(59,130,246,.22), transparent 55%),
    radial-gradient(ellipse 800px 420px at 88% 0%, rgba(168,85,247,.18), transparent 50%),
    linear-gradient(180deg, #0b1228 0%, var(--bg0) 38%);
  line-height:1.55;
}
a{color:inherit;text-decoration:none;}
.container{width:min(1200px,92%);margin:0 auto;}

/* ---------- Header ---------- */
.header-wrap{
  position:sticky;top:0;z-index:50;
  background:rgba(2,6,23,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:72px;padding:0 4px;
}
.brand{
  display:flex;align-items:center;gap:12px;font-size:22px;font-weight:800;
  letter-spacing:.02em;
}
.brand-icon{
  width:40px;height:40px;border-radius:10px;
  background:linear-gradient(135deg,var(--blue),var(--purple));
  display:grid;place-items:center;
  box-shadow:0 0 20px rgba(99,102,241,.45);
}
.brand-icon svg{width:20px;height:20px;fill:#fff;}
.nav{
  display:flex;align-items:center;gap:32px;font-size:15px;color:#cbd5e1;
}
.nav a{opacity:.9;transition:color .2s,opacity .2s;}
.nav a:hover{color:#fff;opacity:1;}
.nav-cta{
  padding:10px 22px;border-radius:999px;font-weight:600;font-size:14px;
  background:linear-gradient(90deg,var(--indigo),var(--purple));
  box-shadow:0 4px 24px rgba(168,85,247,.35);
  white-space:nowrap;
}

/* ---------- Hero ---------- */
.hero{
  margin-top:28px;display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch;
}
.hero-left,.hero-right{
  border-radius:20px;border:1px solid var(--line);
  background:rgba(15,23,42,.55);
  backdrop-filter:blur(12px);
  box-shadow:0 20px 50px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
}
.hero-left{padding:36px 40px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  border:1px solid rgba(96,165,250,.35);color:#bfdbfe;
  background:rgba(59,130,246,.12);
}
.hero-left h1{
  margin-top:18px;font-size:clamp(32px,4.2vw,52px);line-height:1.12;font-weight:800;color:#fff;
}
.hero-kicker{
  margin-top:10px;font-size:17px;font-weight:700;color:#cbd5e1;letter-spacing:.06em;
}
.hero-left h2.hero-subhead{
  margin-top:14px;font-size:clamp(20px,2.5vw,26px);line-height:1.25;font-weight:800;color:#e2e8f0;
}
.hero-left .lead{
  margin-top:16px;color:var(--muted);font-size:15px;max-width:520px;
}
.checks{
  margin-top:20px;display:flex;flex-wrap:wrap;gap:14px 22px;
}
.checks span{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#cbd5e1;
}
.checks svg{flex-shrink:0;opacity:.9;}
.hero-btns{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}
.btn-dl{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:999px;font-weight:700;font-size:16px;color:#fff;
  background:linear-gradient(90deg,#7c3aed,var(--indigo),var(--blue));
  box-shadow:0 0 28px rgba(99,102,241,.45);
  transition:transform .2s,box-shadow .2s;
}
.btn-dl:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(168,85,247,.5);}
@media(max-width:600px){
  .btn-dl{font-size:13px;padding:12px 16px;line-height:1.35;text-align:center;justify-content:center;}
}
.btn-ghost{
  padding:14px 22px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid rgba(226,232,240,.25);color:#e2e8f0;
  background:rgba(255,255,255,.03);
}
.hero-left .tips{
  margin-top:14px;font-size:13px;line-height:1.65;color:#a5b4fc;
  letter-spacing:.02em;padding:10px 14px;border-radius:12px;
  border:1px solid rgba(129,140,248,.25);
  background:rgba(79,70,229,.08);
  max-width:100%;
}
.devices{margin-top:16px;font-size:13px;color:var(--muted);}

.hero-right{padding:28px 26px;position:relative;overflow:hidden;
  border-color:rgba(168,85,247,.35);
  box-shadow:0 0 40px rgba(168,85,247,.12), inset 0 0 40px rgba(59,130,246,.06);
}
.hero-right::before{
  content:"";position:absolute;inset:-40%;background:radial-gradient(circle at 80% 20%, rgba(168,85,247,.15), transparent 45%);
  pointer-events:none;
}
.hero-shot{
  position:relative;margin:0 0 18px;border-radius:14px;overflow:hidden;
  border:1px solid rgba(148,163,184,.22);
  background:rgba(15,23,42,.6);
}
.hero-shot img{
  display:block;width:100%;height:auto;max-height:min(52vh,480px);
  object-fit:cover;object-position:center top;vertical-align:middle;
}
.hero-right .side-h{position:relative;font-size:26px;font-weight:800;margin:0;}
.hero-right .why-list{position:relative;margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.why-row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;
  padding:14px 16px;border-radius:14px;
  border:1px solid rgba(148,163,184,.15);
  background:rgba(30,41,59,.5);
}
.why-ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(59,130,246,.35),rgba(168,85,247,.25));
}
.why-ico svg{width:20px;height:20px;fill:#e0e7ff;}
.why-row h4{font-size:15px;font-weight:700;}
.why-row p{font-size:12px;color:var(--muted);margin-top:2px;}
.tick{color:var(--blue);font-size:18px;font-weight:800;}

/* ---------- Stats ---------- */
.stats{
  margin-top:22px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  padding:22px;border-radius:18px;border:1px solid var(--line);
  background:rgba(15,23,42,.65);
}
.stat{
  display:flex;align-items:center;gap:12px;padding:8px 4px;
}
.stat-ico{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(59,130,246,.35);
  display:grid;place-items:center;color:var(--blue);
}
.stat strong{display:block;font-size:17px;}
.stat span{font-size:12px;color:var(--muted);}

/* ---------- Section shell ---------- */
.section{
  margin-top:22px;padding:36px 28px 32px;border-radius:20px;border:1px solid var(--line);
  background:rgba(15,23,42,.5);
  backdrop-filter:blur(10px);
}
.sec-head{text-align:center;margin-bottom:28px;}
.sec-head h2{font-size:clamp(26px,3vw,36px);font-weight:800;margin-bottom:8px;}
.reviews .sec-head h3{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin-bottom:8px;}
.sec-head p{color:var(--muted);font-size:15px;}

/* ---------- Features 4 cards ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.feat-card{
  padding:22px 18px;border-radius:16px;border:1px solid rgba(148,163,184,.14);
  background:rgba(30,41,59,.45);
  transition:transform .2s,border-color .2s,box-shadow .2s;
}
.feat-card:hover{
  transform:translateY(-4px);
  border-color:rgba(99,102,241,.35);
  box-shadow:0 16px 40px rgba(0,0,0,.3);
}
.feat-ico{
  width:52px;height:52px;border-radius:14px;margin-bottom:14px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(59,130,246,.4),rgba(236,72,153,.2));
  box-shadow:0 0 20px rgba(59,130,246,.25);
}
.feat-ico svg{width:26px;height:26px;fill:#fff;}
.feat-card h4{font-size:17px;margin-bottom:8px;}
.feat-card p{font-size:13px;color:var(--muted);line-height:1.65;}

/* ---------- 核心功能：三列图文卡 ---------- */
.img-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.img-feature-card{
  border-radius:16px;border:1px solid rgba(148,163,184,.14);
  background:rgba(30,41,59,.45);
  overflow:hidden;
  transition:transform .2s,border-color .2s,box-shadow .2s;
}
.img-feature-card:hover{
  transform:translateY(-3px);
  border-color:rgba(99,102,241,.32);
  box-shadow:0 16px 40px rgba(0,0,0,.28);
}
.img-feature-thumb{
  aspect-ratio:16/10;overflow:hidden;background:rgba(15,23,42,.7);
  border-bottom:1px solid rgba(148,163,184,.1);
}
.img-feature-thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.img-feature-body{padding:18px 18px 20px;}
.img-feature-title{
  margin:0 0 10px;font-size:17px;font-weight:800;color:#93c5fd;line-height:1.3;
}
.img-feature-body p{margin:0;font-size:13px;color:var(--muted);line-height:1.7;}

/* ---------- 使用教程：三列封面 + 播放装饰 + 查看详情 ---------- */
.tutorial-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.tutorial-card{
  border-radius:16px;border:1px solid rgba(148,163,184,.14);
  background:rgba(30,41,59,.45);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .2s,border-color .2s,box-shadow .2s;
}
.tutorial-card:hover{
  transform:translateY(-3px);
  border-color:rgba(99,102,241,.32);
  box-shadow:0 16px 40px rgba(0,0,0,.28);
}
.tutorial-thumb-wrap{
  position:relative;display:block;aspect-ratio:16/9;overflow:hidden;
  background:rgba(15,23,42,.75);
}
.tutorial-thumb-wrap::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(15,23,42,.55));
  pointer-events:none;transition:opacity .2s;
}
.tutorial-card:hover .tutorial-thumb-wrap::after{opacity:.85;}
.tutorial-thumb-wrap img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s;}
.tutorial-card:hover .tutorial-thumb-wrap img{transform:scale(1.04);}
.tutorial-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;z-index:2;
  display:grid;place-items:center;
  color:#fff;
  background:rgba(59,130,246,.88);
  box-shadow:0 8px 28px rgba(0,0,0,.4);
  border:2px solid rgba(255,255,255,.25);
  pointer-events:none;
}
.tutorial-card-body{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column;}
.tutorial-card-title{margin:0 0 10px;font-size:17px;font-weight:800;color:#f1f5f9;line-height:1.3;}
.tutorial-card-body p{margin:0 0 14px;font-size:13px;color:var(--muted);line-height:1.7;flex:1;}
.tutorial-more{
  align-self:flex-start;font-size:14px;font-weight:600;color:#93c5fd;
  text-decoration:none;border-bottom:1px solid rgba(147,197,253,.35);
  padding-bottom:2px;transition:color .2s,border-color .2s;
}
.tutorial-more:hover{color:#e0e7ff;border-bottom-color:rgba(224,231,255,.5);}

/* ---------- Steps with connector ---------- */
.steps-wrap{margin-top:8px;}
.steps-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:8px;
  position:relative;padding:8px 0 0;
}
.steps-row::before{
  content:"";position:absolute;top:36px;left:12%;right:12%;height:0;
  border-top:2px dotted rgba(148,163,184,.35);z-index:0;
}
.step-item{flex:1;text-align:center;position:relative;z-index:1;max-width:280px;margin:0 auto;}
.step-num{
  width:56px;height:56px;margin:0 auto 14px;border-radius:50%;font-size:20px;font-weight:800;
  display:grid;place-items:center;color:#fff;
  border:2px solid rgba(255,255,255,.15);
}
.step-item:nth-child(1) .step-num{background:linear-gradient(135deg,var(--blue),#2563eb);}
.step-item:nth-child(2) .step-num{background:linear-gradient(135deg,var(--purple),#7c3aed);}
.step-item:nth-child(3) .step-num{background:linear-gradient(135deg,var(--pink),#db2777);}
.step-ico{margin-bottom:10px;font-size:28px;line-height:1;}
.step-item h5{font-size:16px;margin-bottom:6px;}
.step-item p{font-size:13px;color:var(--muted);}

/* ---------- Reviews carousel ---------- */
.reviews{margin-top:22px;}
.reviews .sec-head{margin-bottom:20px;}
.reviews-box{display:flex;align-items:center;gap:10px;}
.rev-btn{
  flex-shrink:0;width:42px;height:42px;border-radius:50%;cursor:pointer;
  border:1px solid rgba(255,255,255,.15);background:rgba(15,23,42,.8);color:#e2e8f0;
  font-size:22px;line-height:1;display:grid;place-items:center;
  transition:background .2s,border-color .2s;
}
.rev-btn:hover{background:rgba(59,130,246,.2);border-color:rgba(59,130,246,.4);}
.rev-view{
  flex:1;overflow-x:auto;scroll-behavior:smooth;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rev-view::-webkit-scrollbar{display:none;}
.rev-track{display:flex;gap:16px;padding:8px 4px 16px;}
.rev-card{
  flex:0 0 calc(33.333% - 11px);min-width:260px;
  padding:20px;border-radius:16px;border:1px solid rgba(148,163,184,.16);
  background:rgba(30,41,59,.55);
}
@media(max-width:900px){.rev-card{flex:0 0 calc(50% - 8px);}}
@media(max-width:560px){.rev-card{flex:0 0 85%;}}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--purple));
}
.rev-name{font-weight:700;font-size:15px;display:flex;align-items:center;gap:6px;}
.verified{color:var(--blue);font-size:14px;}
.stars{color:#fbbf24;font-size:13px;letter-spacing:1px;margin-top:4px;}
.rev-text{font-size:13px;color:#cbd5e1;line-height:1.65;margin-bottom:12px;}
.rev-like{font-size:12px;color:var(--muted);}

/* ---------- Hero 下：下载入口强化 ---------- */
.download-entry{
  margin-top:22px;padding:28px 26px 30px;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(145deg,rgba(59,130,246,.14),rgba(15,23,42,.65));
  backdrop-filter:blur(10px);
  box-shadow:0 14px 44px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.06);
  text-align:center;
}
.download-entry h2{
  font-size:clamp(22px,2.8vw,28px);font-weight:800;margin:0 0 10px;line-height:1.3;color:var(--text);
}
.download-entry > p{margin:0 0 22px;font-size:15px;color:var(--muted);line-height:1.65;}
.download-entry-note{margin:18px auto 0;max-width:640px;font-size:14px;line-height:1.75;color:var(--muted);text-align:center;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.dl-buttons a{
  display:inline-flex;align-items:center;justify-content:center;min-width:132px;
  padding:14px 20px;border-radius:14px;font-size:15px;font-weight:700;
  color:#fff;text-decoration:none;
  background:linear-gradient(135deg,#3b82f6,#6366f1);
  border:1px solid rgba(147,197,253,.35);
  box-shadow:0 8px 24px rgba(59,130,246,.28);
  transition:transform .15s,box-shadow .2s,border-color .2s;
}
.dl-buttons a:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(99,102,241,.35);
  border-color:rgba(224,231,255,.45);
}

/* ---------- SEO 内容区 ---------- */
.seo-content{
  margin-top:22px;padding:32px 28px 34px;border-radius:20px;border:1px solid var(--line);
  background:rgba(15,23,42,.52);backdrop-filter:blur(10px);
  box-shadow:0 12px 40px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.04);
}
.seo-content h2{
  font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.35;margin-bottom:18px;color:var(--text);
}
.seo-content h3{
  margin:22px 0 10px;font-size:18px;font-weight:700;line-height:1.35;color:#e2e8f0;
}
.seo-content h3:first-of-type{margin-top:8px;}
.seo-content p{
  font-size:15px;line-height:1.88;color:var(--muted);margin-bottom:16px;text-align:justify;text-justify:inter-ideograph;
}
.seo-content p a{color:#a5b4fc;font-weight:600;text-decoration:underline;text-underline-offset:4px;}
.seo-content p a:hover{color:#e0e7ff;}
.seo-content p:last-child{margin-bottom:0;}
.seo-inner-links{margin-top:20px;padding-top:18px;border-top:1px solid rgba(148,163,184,.15);font-size:14px;}
.seo-inner-links a{color:#a5b4fc;font-weight:600;margin-right:4px;}
.seo-inner-links a:hover{color:#e0e7ff;text-decoration:underline;text-underline-offset:4px;}
.seo-inner-links .sep{margin:0 10px;color:#64748b;user-select:none;}
.seo-inner-links.related-inline{border-top:none;padding-top:0;margin-top:22px;text-align:center;}
.seo-inner-links.related-inline .sep{margin:0 10px;}
.seo-content-updated{margin-top:18px;margin-bottom:0;font-size:13px;color:#94a3b8;text-align:center;}

.foot-links{
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 20px;
  font-size:14px;
}
.foot-links a{color:#a5b4fc;text-decoration:underline;text-underline-offset:4px;}
.foot-links a:hover{color:#e0e7ff;}
.foot-links .sep{color:#64748b;user-select:none;}

/* ---------- 首页：教程 / 文章 / 内链矩阵 / 长 SEO ---------- */
.home-guide,.home-articles,.home-links,.seo-qa,.version-info,.safe-download{
  margin-top:22px;padding:28px 26px 30px;border-radius:20px;border:1px solid var(--line);
  background:rgba(15,23,42,.5);backdrop-filter:blur(10px);
  box-shadow:0 12px 36px rgba(0,0,0,.2), inset 0 1px 0 rgba(255,255,255,.04);
}
.home-guide h2,.home-articles h2,.home-links h2,.seo-qa h2,.version-info h2,.safe-download h2{
  font-size:clamp(22px,2.8vw,30px);font-weight:800;margin-bottom:18px;line-height:1.25;color:var(--text);
}
.guide-list{display:flex;flex-wrap:wrap;gap:12px;}
.guide-list a{
  display:inline-block;padding:12px 18px;border-radius:12px;font-size:14px;font-weight:600;
  border:1px solid rgba(129,140,248,.35);color:#c7d2fe;background:rgba(59,130,246,.12);
  transition:border-color .2s,background .2s,color .2s;
}
.guide-list a:hover{border-color:#93c5fd;color:#fff;background:rgba(99,102,241,.22);}
.home-articles .article-item{
  padding:18px 0;border-bottom:1px solid rgba(148,163,184,.12);
}
.home-articles .article-item:last-child{border-bottom:none;padding-bottom:4px;}
.home-articles .article-item h3{margin:0 0 8px;font-size:18px;font-weight:700;line-height:1.35;}
.home-articles .article-item h3 a{color:#a5b4fc;text-decoration:none;}
.home-articles .article-item h3 a:hover{text-decoration:underline;text-underline-offset:4px;color:#e0e7ff;}
.home-articles .article-item p{margin:0;font-size:14px;color:var(--muted);line-height:1.75;}
.seo-qa h3{
  margin:20px 0 8px;font-size:17px;font-weight:700;color:#e2e8f0;
}
.seo-qa h3:first-of-type{margin-top:4px;}
.seo-qa p{font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 4px;}
.version-info p{font-size:15px;color:var(--muted);margin:0 0 12px;}
.version-info ul{margin:0;padding-left:1.2em;color:var(--muted);font-size:14px;line-height:1.85;}
.version-info li{margin-bottom:6px;}
.safe-download p{margin:0;font-size:15px;line-height:1.85;color:var(--muted);}
.home-links p{margin:0;font-size:15px;line-height:1.75;color:var(--muted);}
.home-links p a{color:#a5b4fc;font-weight:600;text-decoration:underline;text-underline-offset:4px;margin:0 2px;}
.home-links p a:hover{color:#e0e7ff;}

/* ---------- FAQ 2 columns ---------- */
.faq2{margin-top:22px;}
.faq-cols{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.faq2 details{
  border-radius:14px;border:1px solid rgba(148,163,184,.16);
  background:rgba(30,41,59,.45);margin-bottom:12px;overflow:hidden;
}
.faq2 summary{
  list-style:none;cursor:pointer;padding:16px 44px 16px 16px;font-weight:600;font-size:15px;
  position:relative;
}
.faq2 summary::-webkit-details-marker{display:none;}
.faq2 summary::after{
  content:"›";position:absolute;right:16px;top:50%;transform:translateY(-50%) rotate(90deg);
  font-size:20px;color:var(--muted);transition:transform .2s;
}
.faq2 details[open] summary::after{transform:translateY(-50%) rotate(-90deg);}
.faq2 details p{
  padding:0 16px 16px;font-size:14px;color:var(--muted);line-height:1.7;
  border-top:1px solid rgba(148,163,184,.1);
  padding-top:12px;margin-top:0;
}

/* ---------- Trust bar ---------- */
.trust-bar{
  margin-top:22px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;
  padding:20px;border-radius:18px;border:1px solid var(--line);
  background:rgba(15,23,42,.55);
}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13px;color:#cbd5e1;}
.trust-item span.ico{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(59,130,246,.3);
  display:grid;place-items:center;font-size:16px;
}

.seo-update-note{
  margin:18px 0 0;text-align:center;font-size:14px;line-height:1.75;color:var(--muted);
  padding:0 12px;
}

/* ---------- Footer ---------- */
.footer{
  margin-top:28px;padding-top:32px;border-top:1px solid var(--line);
  padding-bottom:32px;
}
.foot-grid{
  display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:28px;
}
.foot-brand{font-size:22px;font-weight:800;margin-bottom:10px;}
.foot-desc{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:14px;}
.social{display:flex;gap:10px;}
.social a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:14px;color:#cbd5e1;
  background:rgba(30,41,59,.4);
}
.foot-col h6{font-size:14px;font-weight:700;margin-bottom:12px;color:#e2e8f0;}
.foot-col a{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;}
.foot-col a:hover{color:#fff;}
.qr{
  width:108px;height:108px;border-radius:12px;border:1px solid rgba(148,163,184,.25);
  background:repeating-linear-gradient(0deg,#fff,#fff 6px,#0f172a 6px,#0f172a 12px),
    repeating-linear-gradient(90deg,#fff,#fff 6px,#0f172a 6px,#0f172a 12px);
  background-blend-mode:multiply;
  opacity:.9;
}
.foot-updated-note{
  margin-top:18px;text-align:center;font-size:13px;color:#94a3b8;
}
.foot-updated-note p{margin:0;}
.foot-updated-note .safe{
  margin-top:10px;max-width:720px;margin-left:auto;margin-right:auto;
  font-size:12px;line-height:1.75;color:#64748b;padding:0 12px;
}
.copy{margin-top:16px;text-align:center;font-size:12px;color:#64748b;}

@media(max-width:1024px){
  .nav{display:none;}
  .hero{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  .img-feature-grid,.tutorial-card-grid{grid-template-columns:repeat(2,1fr);}
  .steps-row{flex-direction:column;align-items:center;}
  .steps-row::before{display:none;}
  .faq-cols{grid-template-columns:1fr;}
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:600px){
  .stats{grid-template-columns:1fr;}
  .feat-grid{grid-template-columns:1fr;}
  .img-feature-grid,.tutorial-card-grid{grid-template-columns:1fr;}
  .trust-bar{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .hero-left{padding:24px 20px;}
}

/* ---------- Sub pages: about / list ---------- */
.nav a.nav-active{color:#fff;font-weight:700;opacity:1;}
.inner-hero{
  margin-top:18px;padding:32px 28px;border-radius:20px;border:1px solid var(--line);
  background:rgba(15,23,42,.55);backdrop-filter:blur(10px);
  box-shadow:0 16px 40px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.05);
}
.inner-hero h1{font-size:clamp(26px,3.2vw,38px);font-weight:800;line-height:1.2;margin-bottom:12px;}
.inner-hero .lead{color:var(--muted);font-size:15px;line-height:1.75;max-width:820px;}
.prose-block{margin-top:22px;padding:28px;border-radius:20px;border:1px solid var(--line);background:rgba(15,23,42,.45);}
.prose-block h2{font-size:18px;font-weight:700;margin:0 0 12px;color:#e2e8f0;}
.prose-block p,.prose-block li{color:var(--muted);font-size:14px;line-height:1.85;}
.prose-block a{color:#a5b4fc;font-weight:600;text-decoration:underline;text-underline-offset:4px;}
.prose-block a:hover{color:#e0e7ff;}
a[data-seo-autolink]{color:#a5b4fc;font-weight:600;text-decoration:underline;text-underline-offset:3px;}
a[data-seo-autolink]:hover{color:#e0e7ff;}

/* ---------- 站群：脚本注入的交叉链接区 ---------- */
.seo-cluster-web{
  margin-top:28px;padding:24px 22px 26px;border-radius:18px;border:1px solid rgba(129,140,248,.22);
  background:rgba(15,23,42,.55);
}
.seo-cluster-web > h2{font-size:clamp(18px,2.2vw,22px);font-weight:800;margin:0 0 12px;color:#e2e8f0;}
.seo-cluster-web-lead{font-size:13px;color:var(--muted);line-height:1.75;margin:0 0 18px;}
.seo-cluster-site{margin-bottom:18px;}
.seo-cluster-site:last-child{margin-bottom:0;}
.seo-cluster-site h3{font-size:15px;font-weight:700;margin:0 0 10px;color:#93c5fd;}
.seo-cluster-site ul{margin:0;padding-left:1.15em;color:var(--muted);font-size:13px;line-height:1.85;}
.seo-cluster-site a{color:#a5b4fc;font-weight:600;text-decoration:underline;text-underline-offset:3px;}
.seo-cluster-site a:hover{color:#e0e7ff;}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.prose-block ul{margin:10px 0 0 1.1em;}
.prose-block li{margin-bottom:8px;}
.dl-wrap{margin-top:22px;}
.dl-wrap .sec-head h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.download-tips{
  margin-bottom:14px;padding:12px 16px;border-radius:12px;font-size:13px;line-height:1.55;
  color:#a5b4fc;border:1px solid rgba(129,140,248,.28);
  background:rgba(79,70,229,.1);
}
.inner-links{margin-top:18px;font-size:14px;color:var(--muted);line-height:1.75;}
.inner-links a{color:#a5b4fc;font-weight:600;text-decoration:underline;text-underline-offset:4px;}
.inner-links a:hover{color:#e0e7ff;}
.dl-table caption{text-align:left;padding:12px 16px;font-size:14px;border-bottom:1px solid rgba(148,163,184,.15);color:var(--text);}
.dl-table{width:100%;border-collapse:separate;border-spacing:0;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);font-size:14px;}
.dl-table th,.dl-table td{padding:14px 16px;text-align:left;border-bottom:1px solid rgba(148,163,184,.12);}
.dl-table th{color:#e2e8f0;font-weight:700;background:rgba(30,41,59,.65);}
.dl-table tr:last-child td{border-bottom:none;}
.dl-table td{color:var(--muted);}
.dl-table .btn-cell{white-space:nowrap;}
.tag-pill{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;background:rgba(59,130,246,.18);color:#93c5fd;}
.btn-sm{display:inline-block;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;
  background:linear-gradient(90deg,var(--indigo),var(--purple));color:#fff;}
.btn-sm:hover{opacity:.95;}