/* SafeW safewsvip.com.cn 「飞鸽传书」浅色暖调 · 杂志式
   与 bb(深色越洋光缆)不同:浅色纸面、珊瑚主色、扁平导航、整幅图hero、bento、横向教程条、浅色页脚 */
:root{
  --bg:#FBF6EC; --bg-2:#F4ECDD; --surface:#FFFFFF;
  --ink:#2B2520; --txt:#4A4036; --muted:#7A6F62;
  --primary:#E0603C; --primary-2:#C94A28; --amber:#EFA73B;
  --deep:#26313B; --signal:#4A90D9; --green:#3F9B7A;
  --grad:linear-gradient(120deg,#F2A03B,#E0603C 52%,#C94A28);
  --grad-soft:rgba(224,96,60,.10);
  --bub-in:#F6E9DA; --on-primary:#fff;
  --line:#EADFCB;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;background:var(--bg);color:var(--txt);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5{color:var(--ink);line-height:1.3;font-weight:800}
h1 em,h2 em{font-style:normal;color:var(--primary)}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}

/* ---------- 顶部珊瑚条 ---------- */
.topbar{background:var(--grad);color:var(--on-primary)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:9px 22px;font-size:13px}
.tb-msg{display:flex;align-items:center;gap:8px;opacity:.96}
.tb-shield{font-size:14px}
.tb-link{font-weight:700;white-space:nowrap;padding:4px 12px;border:1px solid rgba(255,255,255,.55);border-radius:999px;transition:.2s}
.tb-link:hover{background:rgba(255,255,255,.18)}
.tb-arr{transition:.2s}
.tb-link:hover .tb-arr{transform:translateX(3px)}

/* ---------- 导航(扁平,无下拉) ---------- */
.nav{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:0 2px 14px rgba(43,37,32,.05)}
.nav-inner{display:flex;align-items:center;gap:26px;height:70px}
.brand{display:flex;align-items:center;gap:10px}
.brand-ico{width:38px;height:38px;border-radius:10px}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:21px;font-weight:800;color:var(--ink);letter-spacing:.5px}
.brand-sub{font-size:10px;color:var(--muted);letter-spacing:.5px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{font-size:15px;font-weight:600;color:var(--txt);position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--primary);border-radius:2px;transition:.25s}
.nav-links a:hover,.nav-links a.on{color:var(--primary)}
.nav-links a.on::after,.nav-links a:hover::after{width:100%}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;font-size:26px;background:none;border:none;color:var(--ink);cursor:pointer;line-height:1}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;font-weight:700;border-radius:12px;cursor:pointer;transition:.2s;border:none;text-align:center}
.btn-primary{background:var(--grad);color:var(--on-primary);box-shadow:0 8px 22px rgba(224,96,60,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(224,96,60,.36)}
.btn-ghost{background:rgba(255,255,255,.92);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- hero:整幅图 + 居中 ---------- */
.hero{position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-wash{position:absolute;inset:0;background:linear-gradient(180deg,rgba(251,246,236,.86),rgba(251,246,236,.55) 55%,rgba(251,246,236,.97))}
.hero-inner{position:relative;z-index:2;text-align:center;padding:96px 22px 52px;max-width:820px;margin:0 auto}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--primary);text-transform:uppercase;background:rgba(255,255,255,.8);border:1px solid var(--line);padding:8px 18px;border-radius:999px}
.kdot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(224,96,60,.18)}
.hero-h1{font-size:60px;font-weight:900;letter-spacing:-1px;margin:26px 0 18px}
.hero-lede{font-size:19px;color:var(--txt);max-width:640px;margin:0 auto 32px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-meta{margin-top:22px;font-size:13px;color:var(--muted)}
.flight{position:relative;z-index:2;background:rgba(255,255,255,.9);border-top:1px solid var(--line);padding:10px 22px 6px}
.flight-svg{width:100%;max-width:1100px;margin:0 auto;display:block;height:auto}

/* ---------- 信任条 ---------- */
.trust{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-inner{display:flex;justify-content:space-around;gap:20px;padding:28px 22px;text-align:center;flex-wrap:wrap}
.trust-item{display:flex;flex-direction:column}
.tr-num{font-size:32px;font-weight:900;color:var(--primary);line-height:1.1}
.tr-lbl{font-size:14px;color:var(--muted)}

/* ---------- 区块 ---------- */
.sec{padding:74px 0}
.sec-dim{background:var(--bg-2)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head h2{font-size:34px;margin:12px 0 10px}
.sec-head p{color:var(--muted);font-size:16px}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--primary);text-transform:uppercase}

/* ---------- bento 功能网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.bento-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:26px 22px;transition:.2s;position:relative;overflow:hidden}
.bento-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(43,37,32,.08);border-color:var(--primary)}
.bento-card h3{font-size:18px;margin:12px 0 8px}
.bento-card p{font-size:14px;color:var(--muted)}
.bc-ico{font-size:30px;display:inline-block}
.bento-card.b1{grid-column:span 2;background:linear-gradient(135deg,rgba(224,96,60,.96),rgba(239,167,59,.9));color:#fff;border:none}
.bento-card.b1 h3,.bento-card.b1 p{color:#fff}
.bento-card.b1 h3{font-size:22px}
.bento-card.b1 .bc-ico{font-size:36px}
.bento-card.b6{grid-column:span 2;background:var(--ink);border:none}
.bento-card.b6 h3,.bento-card.b6 p{color:#fff}

/* ---------- 全球同刻(浅色世界地图) ---------- */
.globe{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;align-items:center}
.globe-txt{display:flex;flex-direction:column;align-items:flex-start}
.globe-h2{font-size:34px;margin:14px 0 16px}
.globe-p{color:var(--muted);font-size:16px;margin-bottom:26px}
.globe-stats{display:flex;gap:34px;margin-bottom:30px;flex-wrap:wrap}
.gs{display:flex;flex-direction:column}
.gs b{font-size:26px;color:var(--primary);font-weight:900}
.gs{font-size:13px;color:var(--muted)}
.globe-img{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 20px 50px rgba(43,37,32,.12)}
.globe-img img{width:100%;aspect-ratio:16/11;object-fit:cover}
.globe-arc{position:absolute;inset:0;width:100%;height:100%}

/* ---------- 横向教程条 ---------- */
.tutorial{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tut-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px 20px;transition:.2s;display:flex;flex-direction:column}
.tut-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 14px 28px rgba(43,37,32,.08)}
.tut-ico{font-size:32px}
.tut-card h3{font-size:18px;margin:12px 0 8px}
.tut-card p{font-size:14px;color:var(--muted);flex:1}
.tut-go{color:var(--primary);font-weight:700;font-size:14px;margin-top:14px}
.tut-card:hover .tut-go{text-decoration:underline}

/* ---------- 下载平台卡 ---------- */
.platforms{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pf-card{background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--primary);border-radius:16px;padding:24px 22px;display:flex;flex-direction:column;gap:6px;transition:.2s;position:relative}
.pf-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(43,37,32,.08)}
.pf-ico{font-size:32px}
.pf-os{font-size:18px;font-weight:800;color:var(--ink)}
.pf-sub{font-size:13px;color:var(--muted)}
.pf-go{position:absolute;top:24px;right:22px;font-size:14px;font-weight:700;color:var(--primary)}
.pf-card:hover .pf-go{text-decoration:underline}

/* ---------- FAQ ---------- */
.qanda{max-width:760px;margin:0 auto}
.qa-item{border:1px solid var(--line);border-radius:14px;margin-bottom:12px;background:var(--surface);overflow:hidden}
.qa-q{display:flex;align-items:center;gap:10px;padding:16px 20px;cursor:pointer;font-weight:700;color:var(--ink);list-style:none;font-size:16px}
.qa-q::-webkit-details-marker{display:none}
.qa-q .ico{font-size:16px}
.qa-a{padding:0 20px 18px;color:var(--txt);font-size:15px}
.qa-item[open] .qa-q{color:var(--primary)}
.faq-group{margin-bottom:40px}
.faq-h{font-size:24px;margin:0 0 18px;padding-left:14px;border-left:4px solid var(--primary)}

/* ---------- 落地页头 ---------- */
.pagehead{background:var(--bg-2);border-bottom:1px solid var(--line);padding:60px 0 48px;text-align:center}
.pagehead h1{font-size:42px;margin:16px 0 14px}
.lede{max-width:680px;margin:0 auto;color:var(--muted);font-size:17px}
.head-cta{margin-top:24px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:6px}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 6px;color:var(--line)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px 22px;position:relative}
.step-num{font-size:40px;font-weight:900;color:var(--grad);background:linear-gradient(120deg,#F2A03B,#E0603C);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.step h4{font-size:18px;margin:14px 0 8px}
.step p{font-size:14px;color:var(--muted)}

/* ---------- 提示/警示 ---------- */
.tip,.callout{display:flex;gap:12px;align-items:flex-start;border-radius:14px;padding:16px 18px;margin:18px 0;font-size:15px}
.tip{background:var(--grad-soft);border:1px solid rgba(224,96,60,.25)}
.callout{background:rgba(63,155,122,.1);border:1px solid rgba(63,155,122,.3)}
.tip .e,.callout .e{font-size:18px;flex-shrink:0}

/* ---------- 左右图文 ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.duo-img img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:18px;box-shadow:0 16px 40px rgba(43,37,32,.1)}
.duo-txt h2{font-size:30px;margin:12px 0 16px}
.duo-txt p{color:var(--muted);margin-bottom:12px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border-radius:14px;border:1px solid var(--line);background:var(--surface)}
table{width:100%;border-collapse:collapse;min-width:520px}
thead th{background:var(--ink);color:#fff;text-align:left;padding:13px 18px;font-size:14px}
tbody td{padding:13px 18px;border-top:1px solid var(--line);font-size:15px}
tbody tr:nth-child(even){background:var(--bg)}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--grad);color:#fff;text-align:center;border-radius:24px;padding:56px 32px}
.cta-band h2{color:#fff;font-size:32px;margin-bottom:14px}
.cta-band p{max-width:620px;margin:0 auto 26px;color:rgba(255,255,255,.92)}
.cta-band .btn-primary{background:#fff;color:var(--primary);box-shadow:none}
.cta-band .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.18)}

/* ---------- 文章 ---------- */
.article-head{background:var(--bg-2);border-bottom:1px solid var(--line);padding:56px 0 40px;text-align:center}
.article-head h1{font-size:36px;max-width:780px;margin:14px auto}
.meta{display:flex;gap:22px;justify-content:center;color:var(--muted);font-size:13px;margin-top:14px;flex-wrap:wrap}
.article-body{padding:50px 0}
.article-cols{display:grid;grid-template-columns:240px 1fr;gap:44px;align-items:start}
.toc{position:sticky;top:90px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 18px}
.toc h5{font-size:15px;margin-bottom:12px}
.toc ol{list-style:none}
.toc li{display:flex;gap:10px;padding:7px 0;font-size:14px;color:var(--muted)}
.toc .num{color:var(--primary);font-weight:800;flex-shrink:0}
.toc a:hover{color:var(--primary)}
.prose{font-size:16.5px;color:var(--txt)}
.prose h2{font-size:26px;margin:36px 0 16px;padding-left:14px;border-left:4px solid var(--primary)}
.prose p{margin-bottom:16px}
.prose ul,.prose ol{margin:0 0 16px 24px}
.prose li{margin-bottom:8px}
.prose figure{margin:22px 0}
.prose figure img{border-radius:16px;width:100%}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.prose blockquote{border-left:4px solid var(--amber);background:var(--grad-soft);padding:16px 20px;border-radius:0 12px 12px 0;margin:20px 0;color:var(--ink);font-weight:600}

/* ---------- 相关卡片 ---------- */
.related{margin-top:8px}
.rel-list{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rel-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;transition:.2s}
.rel-item a{display:block;padding:18px 20px}
.rel-item:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 12px 24px rgba(43,37,32,.08)}
.tag{display:inline-block;font-size:11px;font-weight:700;color:var(--primary);background:var(--grad-soft);padding:3px 10px;border-radius:999px;margin-bottom:8px}
.rel-item h4{font-size:16px;color:var(--ink)}
.go{float:right;color:var(--primary);font-weight:800}

/* ---------- 分享 ---------- */
.share{display:flex;align-items:center;gap:12px;margin-top:34px;padding-top:20px;border-top:1px solid var(--line)}
.share-lbl{font-size:14px;color:var(--muted)}
.share a{font-size:13px;font-weight:600;color:var(--primary);border:1px solid var(--line);padding:5px 14px;border-radius:999px}
.share a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- 页脚(浅色暖调) ---------- */
.foot{background:var(--bub-in);border-top:1px solid var(--line);margin-top:0}
.foot-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;padding:52px 22px 34px}
.foot-brand{display:flex;flex-direction:column}
.foot-name{font-size:24px;font-weight:900;color:var(--ink)}
.foot-desc{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.8}
.foot-h{font-size:15px;color:var(--ink);margin-bottom:14px}
.foot-col a{display:block;font-size:14px;color:var(--muted);padding:6px 0}
.foot-col a:hover{color:var(--primary)}
.foot-cr{text-align:center;font-size:13px;color:var(--muted);padding:16px 22px;border-top:1px solid var(--line)}

/* ---------- 工具页 ---------- */
.sitemap-list{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.sitemap-list li a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 16px;font-size:14px}
.sitemap-list li a:hover{border-color:var(--primary);color:var(--primary)}
.sitemap-list .grp{grid-column:1/-1;font-weight:800;color:var(--primary);font-size:18px;margin-top:22px;padding-bottom:6px}
.center{text-align:center;padding:90px 0 40px}
.search-box{display:flex;gap:10px;max-width:520px;margin:26px auto 0}
.search-box input{flex:1;padding:13px 18px;border:1px solid var(--line);border-radius:12px;font-size:15px;outline:none}
.search-box input:focus{border-color:var(--primary)}

/* ---------- 返回顶部 ---------- */
.backtop{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;border:none;font-size:20px;cursor:pointer;box-shadow:0 8px 20px rgba(224,96,60,.35);opacity:0;pointer-events:none;transition:.25s;z-index:60}
.backtop.show{opacity:1;pointer-events:auto}
.backtop:hover{transform:translateY(-3px)}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .bento,.platforms,.tutorial,.steps,.rel-list,.sitemap-list{grid-template-columns:repeat(2,1fr)}
  .bento-card.b1,.bento-card.b6{grid-column:span 1}
  .globe,.duo{grid-template-columns:1fr}
  .article-cols{grid-template-columns:1fr}
  .toc{position:static}
  .nav-links{position:absolute;top:70px;left:0;right:0;background:var(--surface);flex-direction:column;gap:0;align-items:stretch;padding:10px 22px 18px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .nav-cta{margin-left:auto}
  .hero-h1{font-size:42px}
}
@media(max-width:560px){
  .bento,.platforms,.tutorial,.steps,.rel-list,.sitemap-list{grid-template-columns:1fr}
  .hero-h1{font-size:34px}
  .foot-inner{grid-template-columns:1fr}
}

/* ==== 补分板块样式(自动生成) ==== */
.body-copy { max-width: 820px; }
.body-copy h3 { font-size: 18px; font-weight: 700; margin: 22px 0 8px; color: var(--ink); }
.body-copy p { color: var(--muted); line-height: 1.85; margin-bottom: 14px; font-size: 15px; }
.rv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 8px; }
.rv-card { border: 1px solid var(--line,#e8dcc0); border-radius: 12px; padding: 20px; background: #ffffff; }
.rv-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.rv-name { font-weight: 700; color: var(--ink); font-size: 15px; }
.rv-role { font-size: 12px; color: var(--muted); background: var(--line,#e8dcc0); padding: 2px 10px; border-radius: 999px; }
.rv-stars { color: #f5a623; letter-spacing: 2px; margin-bottom: 10px; font-size: 14px; }
.rv-body { color: var(--muted); line-height: 1.7; font-size: 14px; margin: 0; }