/* ==========================================================================
   efanra.com.cn · 深海青绿 · 航线风格
   主题：暗青底 / 青绿渐变方块按钮 / 左侧色条卡片 / 航线网格
   ========================================================================== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--dark);
  line-height:1.68;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

:root{
  --brand:#0891b2;
  --brand2:#10b981;
  --accent:#fbbf24;
  --dark:#04161a;
  --ink:#e4f2f4;
  --muted:#8db0b8;
  --line:#123c46;
  --bg:#082027;
  --card:#0b2830;
  --grad:linear-gradient(135deg,#0ea5e9 0%,#10b981 100%);
  --grad2:linear-gradient(135deg,#22d3ee 0%,#34d399 100%);
  --shadow:0 16px 40px rgba(0,0,0,.48);
  --glow:0 12px 28px rgba(16,185,129,.32);
  --radius:16px;
  --rbtn:12px;
}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- 按钮：渐变方块（参考图质感），青绿配色 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 25px;border-radius:var(--rbtn);
  font-weight:700;font-size:15px;transition:.25s;white-space:nowrap;
}
.btn-grad{
  background:var(--grad);color:#04161a;
  box-shadow:0 10px 22px rgba(16,185,129,.34),inset 0 1px 0 rgba(255,255,255,.4);
}
.btn-grad:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 32px rgba(14,165,233,.42),inset 0 1px 0 rgba(255,255,255,.55);
}
.btn-ghost{
  color:#bfe6e8;border:1.5px solid rgba(255,255,255,.26);
  background:rgba(255,255,255,.03);
}
.btn-ghost:hover{border-color:var(--brand2);color:#fff;background:rgba(16,185,129,.14)}
.btn-light{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-light:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.dl-btn{min-width:148px}

/* ---------- 通用区块 ---------- */
.sec{padding:86px 0}
.sec-tag{
  display:inline-block;padding:6px 15px;border-radius:8px;
  background:rgba(16,185,129,.14);color:#6ee7b7;border:1px solid rgba(16,185,129,.3);
  font-size:13px;font-weight:700;letter-spacing:1px;margin-bottom:16px;
}
.sec-title{font-size:35px;font-weight:800;line-height:1.28;margin-bottom:14px;color:#fff}
.sec-sub{color:var(--muted);font-size:16px;max-width:650px}
.sec-head{text-align:center;margin-bottom:50px}
.sec-head .sec-sub{margin:0 auto}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:.3s;background:transparent}
.nav.scrolled{
  background:rgba(4,22,26,.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(16,185,129,.2);
  box-shadow:0 8px 26px rgba(0,0,0,.42);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff}
.logo img{height:38px;width:38px;border-radius:9px}
.logo b{color:#fff}
.menu{display:flex;align-items:center;gap:2px}
.menu>li{position:relative}
.menu>li>a{
  display:flex;align-items:center;gap:5px;padding:10px 15px;
  color:#d3eaec;font-weight:500;font-size:15px;border-radius:8px;transition:.2s;
}
.menu>li>a:hover{background:rgba(16,185,129,.16);color:#fff}
.menu>li>a .arr{font-size:11px;transition:.25s}
.menu>li:hover>a .arr{transform:rotate(180deg)}
.drop{
  position:absolute;top:100%;left:0;min-width:188px;
  background:#0b2830;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 18px 42px rgba(0,0,0,.52);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;
}
.menu>li:hover .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop a{display:block;padding:10px 14px;border-radius:8px;color:#bfe0e3;font-size:14px;transition:.18s}
.drop a:hover{background:rgba(16,185,129,.16);color:#fff}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn{padding:10px 19px;font-size:14px}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.burger span{width:24px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;padding:152px 0 112px;overflow:hidden;
  background:
    radial-gradient(1000px 520px at 78% -12%,rgba(16,185,129,.34),transparent),
    radial-gradient(760px 420px at 12% 12%,rgba(14,165,233,.28),transparent),
    linear-gradient(158deg,#04161a 0%,#093440 58%,#051d24 100%);
}
.hero:before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px);
}
.hero:after{
  content:"";position:absolute;left:-10%;top:10%;width:70%;height:160%;
  background:radial-gradient(closest-side,rgba(34,211,238,.16),transparent);
  transform:rotate(-14deg);pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center}
.hero h1{font-size:44px;font-weight:900;line-height:1.2;margin-bottom:20px}
.hero h1 .hl{
  background:var(--grad2);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero p{font-size:18px;color:#bfe0e3;margin-bottom:30px;max-width:540px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.stats{display:flex;gap:38px;flex-wrap:wrap}
.stat b{
  font-size:30px;font-weight:800;display:block;color:#6ee7b7;
}
.stat span{font-size:13px;color:#8db0b8}

/* ---------- 面板 Demo ---------- */
.demo{
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.025));
  border:1px solid rgba(110,231,183,.22);border-radius:20px;padding:26px;
  backdrop-filter:blur(10px);box-shadow:0 30px 64px rgba(0,0,0,.48);
}
.demo-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.demo-top .dot{display:flex;gap:6px}
.demo-top .dot i{width:11px;height:11px;border-radius:3px}
.demo-top .dot i:nth-child(1){background:#ff5f57}
.demo-top .dot i:nth-child(2){background:#febc2e}
.demo-top .dot i:nth-child(3){background:#28c840}
.demo-status{font-size:13px;color:#a9cbd0}
.gauge{position:relative;width:206px;height:206px;margin:0 auto 22px}
.gauge svg{transform:rotate(-90deg)}
.gauge .ring{fill:none;stroke:rgba(255,255,255,.12);stroke-width:12}
.gauge .val{fill:none;stroke:url(#gg);stroke-width:12;stroke-linecap:round;transition:stroke-dashoffset .6s}
.gauge-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.gauge-center b{font-size:42px;font-weight:800}
.gauge-center span{font-size:12px;color:#8db0b8}
.demo-stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;text-align:center;margin-bottom:20px}
.demo-stats .ds{background:rgba(255,255,255,.05);border-radius:12px;padding:12px 8px}
.demo-stats b{display:block;font-size:20px}
.demo-stats span{font-size:12px;color:#8db0b8}
.d-lat{color:#34d399}
.d-loss{color:#fbbf24}
.d-spd{color:#38bdf8}
.demo-ctl{display:flex;gap:10px;flex-wrap:wrap}
.demo-ctl select,.demo-ctl button{
  flex:1;min-width:102px;padding:11px 12px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;font-size:14px;
}
.demo-ctl button.connect{background:var(--grad);border:none;color:#04161a;font-weight:700;box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
.demo-ctl button.toggle.on{background:var(--accent);border:none;color:#2a1c02;font-weight:700}

/* ---------- 核心能力：左色条卡 ---------- */
.features{background:var(--dark)}
.feature{
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--brand2);
  border-radius:var(--radius);padding:28px;transition:.25s;
}
.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-left-color:var(--accent)}
.feature .ic{
  width:50px;height:50px;border-radius:14px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;font-size:23px;
  margin-bottom:16px;color:#04161a;
}
.feature h3{font-size:19px;margin-bottom:10px;color:#fff}
.feature p{color:var(--muted);font-size:14.5px}

/* ---------- 节点：两列大卡 ---------- */
.nodes{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.node{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;display:flex;align-items:center;gap:18px;transition:.25s;
}
.node:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(16,185,129,.4)}
.node .flag{
  width:50px;height:50px;border-radius:14px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;font-size:21px;flex-shrink:0;color:#04161a;
}
.node h4{font-size:16.5px;margin-bottom:3px;color:#fff}
.node p{font-size:13px;color:var(--muted)}
.node .ping{margin-left:auto;text-align:right}
.node .ping b{color:#34d399;font-size:19px}
.node .ping span{font-size:12px;color:var(--muted)}

/* ---------- 场景 ---------- */
.scenario{background:linear-gradient(158deg,#04161a,#0b3a45 62%,#061f26);color:#fff}
.scenario .sec-title{color:#fff}
.scenario .sec-sub{color:#a9cbd0}
.scen{
  background:rgba(255,255,255,.045);border:1px solid rgba(110,231,183,.16);
  border-radius:var(--radius);padding:26px;transition:.25s;
}
.scen:hover{background:rgba(16,185,129,.12);transform:translateY(-4px);border-color:rgba(16,185,129,.4)}
.scen .ic{font-size:29px;margin-bottom:12px}
.scen h3{font-size:18px;margin-bottom:10px}
.scen p{color:#bfe0e3;font-size:14px}

/* ---------- 价格 ---------- */
.pricing{background:var(--dark)}
.price{
  background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:32px;text-align:center;transition:.25s;position:relative;
}
.price:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.price.hot{background:var(--grad);color:#04161a;border:none;transform:scale(1.03);box-shadow:0 22px 50px rgba(16,185,129,.4)}
.price.hot:hover{transform:scale(1.03) translateY(-5px)}
.price .tag{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:#04161a;color:#6ee7b7;padding:5px 15px;border-radius:8px;
  font-size:12px;font-weight:800;border:1px solid rgba(110,231,183,.4);
}
.price .pname{font-size:18px;font-weight:700;margin-bottom:14px}
.price .pnum{font-size:42px;font-weight:900;margin-bottom:6px}
.price .pnum small{font-size:16px;font-weight:500}
.price .pdesc{font-size:13px;margin-bottom:22px;opacity:.78}
.price ul{text-align:left;margin-bottom:24px}
.price ul li{
  padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.12);
  font-size:14px;display:flex;gap:8px;
}
.price ul li:before{content:"✓";color:var(--brand2);font-weight:700}
.price.hot ul li{border-color:rgba(4,22,26,.2)}
.price.hot ul li:before{color:#04161a}
.price .btn{width:100%}
.price.hot .btn{background:#04161a;color:#6ee7b7}

/* ---------- FAQ ---------- */
.faq{background:var(--bg);border-top:1px solid var(--line)}
.faq-list{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:.25s;
}
.faq-item.open{border-color:rgba(16,185,129,.45)}
.faq-q{
  width:100%;text-align:left;padding:19px 22px;font-size:16px;font-weight:700;
  display:flex;justify-content:space-between;align-items:center;color:#fff;gap:16px;
}
.faq-q .arr{transition:.25s;color:var(--brand2);font-size:20px;flex-shrink:0}
.faq-item.open .faq-q .arr{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:.3s}
.faq-item.open .faq-a{max-height:640px}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:14.5px}

/* ---------- 用户评价 ---------- */
.testi{background:linear-gradient(158deg,#04161a,#0b3a45);color:#fff}
.testi .sec-title{color:#fff}
.testi .sec-sub{color:#a9cbd0}
.tcard{
  background:rgba(255,255,255,.05);border:1px solid rgba(110,231,183,.14);
  border-radius:var(--radius);padding:26px;transition:.25s;
}
.tcard:hover{border-color:rgba(16,185,129,.42);transform:translateY(-4px)}
.tcard .stars{color:var(--accent);margin-bottom:14px;letter-spacing:2px}
.tcard p{color:#dceff1;font-size:15px;margin-bottom:18px}
.tcard .user{display:flex;align-items:center;gap:12px}
.tcard .av{
  width:44px;height:44px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;color:#04161a;
}
.tcard .user b{display:block;font-size:15px}
.tcard .user span{font-size:12px;color:#8db0b8}

/* ---------- 资讯 ---------- */
.news{background:var(--dark)}
.ncard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.25s;display:flex;flex-direction:column;
}
.ncard:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(16,185,129,.4)}
.ncard img{width:100%;height:178px;object-fit:cover}
.ncard .nc{padding:20px}
.ncard .nc h3{font-size:16px;margin-bottom:10px;line-height:1.45;color:#fff}
.ncard .nc h3 a:hover{color:#6ee7b7}
.ncard .nc .date{font-size:12px;color:var(--muted)}
.ncard .nc .cat{
  display:inline-block;font-size:12px;color:#6ee7b7;
  background:rgba(16,185,129,.14);border:1px solid rgba(16,185,129,.26);
  padding:3px 10px;border-radius:8px;margin-bottom:10px;
}

/* ---------- CTA ---------- */
.cta{background:var(--grad);color:#04161a;padding:80px 0;text-align:center;position:relative;overflow:hidden}
.cta:before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.14) 0 2px,transparent 2px 26px);
}
.cta>*{position:relative}
.cta h2{font-size:35px;font-weight:800;margin-bottom:16px}
.cta p{opacity:.86;margin-bottom:30px}
.cta .btn{background:#04161a;color:#6ee7b7;font-size:16px;padding:15px 34px}

/* ---------- 页脚 ---------- */
.footer{background:#031014;color:#8db0b8;padding:64px 0 24px;border-top:1px solid var(--line)}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.f-grid h4{color:#fff;font-size:16px;margin-bottom:18px}
.f-grid a{display:block;padding:6px 0;font-size:14px;color:#8db0b8;transition:.2s}
.f-grid a:hover{color:#6ee7b7}
.f-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-logo img{height:36px;width:36px;border-radius:8px}
.f-logo b{color:#fff;font-size:18px}
.f-about{font-size:14px;line-height:1.8}
.f-copy{border-top:1px solid rgba(255,255,255,.09);padding-top:20px;text-align:center;font-size:13px}

/* ---------- 子页 Hero ---------- */
.phero{
  background:
    radial-gradient(880px 440px at 80% -14%,rgba(16,185,129,.32),transparent),
    linear-gradient(158deg,#04161a,#0b3a45);
  color:#fff;padding:152px 0 68px;text-align:center;
}
.phero h1{font-size:39px;font-weight:900;margin-bottom:14px}
.phero p{color:#bfe0e3;max-width:650px;margin:0 auto}
.crumb{display:flex;justify-content:center;gap:8px;font-size:13px;color:#8db0b8;margin-top:16px}
.crumb a{color:#8db0b8}
.crumb a:hover{color:#fff}
.crumb span{color:#fff}

/* ---------- 下载页 ---------- */
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.dl-stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:26px}
.dl-stats b{font-size:26px;font-weight:800;color:#6ee7b7;display:block}
.dl-stats span{font-size:13px;color:var(--muted)}
.ver{
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--brand);
  border-radius:var(--radius);padding:28px;display:flex;gap:22px;align-items:center;
  margin-bottom:18px;transition:.25s;
}
.ver:hover{box-shadow:var(--shadow);border-left-color:var(--accent)}
.ver .vinfo{flex:1}
.ver .vinfo h3{font-size:18px;margin-bottom:6px;color:#fff}
.ver .vinfo p{font-size:13px;color:var(--muted)}
.ver .vinfo ul{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.ver .vinfo ul li{
  font-size:12px;background:rgba(255,255,255,.05);border:1px solid var(--line);
  padding:4px 12px;border-radius:8px;
}
.sys{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sys .s{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:var(--card)}
.sys .s b{display:block;font-size:15px;margin-bottom:8px;color:#6ee7b7}
.sys .s p{font-size:14px;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{text-align:center}
.step .num{
  width:58px;height:58px;border-radius:16px;background:var(--grad);color:#04161a;
  font-size:23px;font-weight:800;display:flex;align-items:center;justify-content:center;
  margin:0 auto 15px;box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
}
.step h3{font-size:16px;margin-bottom:8px;color:#fff}
.step p{font-size:13px;color:var(--muted)}

/* ---------- 文章页 ---------- */
.art-wrap{display:grid;grid-template-columns:1fr 318px;gap:38px;align-items:start}
.art{background:transparent;color:var(--ink)}
.art h1{font-size:30px;font-weight:800;line-height:1.4;margin:18px 0;color:#fff}
.art .meta{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:24px}
.art img.cover{width:100%;border-radius:var(--radius);margin-bottom:28px}
.art .lead{
  font-size:17px;color:#dceff1;font-weight:500;
  background:rgba(16,185,129,.09);padding:20px 24px;
  border-left:4px solid var(--brand2);border-radius:0 12px 12px 0;margin-bottom:26px;
}
.art h2{font-size:22px;font-weight:800;margin:30px 0 14px;padding-top:14px;color:#fff}
.art p{font-size:16px;color:#c8e3e6;margin-bottom:16px}
.art img.bodyimg{width:100%;border-radius:12px;margin:22px 0}
.art blockquote{
  border-left:4px solid var(--accent);background:rgba(251,191,36,.07);
  padding:16px 20px;border-radius:0 12px 12px 0;margin:20px 0;color:#e8f6f7;
}
.art .author-line{margin:0 0 18px;font-size:14px;color:#8db0b8}
.art .author-line b{color:#c8e3e6;font-weight:600}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:90px}
.scard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:22px}
.scard .stitle{
  font-size:16px;font-weight:800;margin-bottom:17px;padding-left:12px;
  border-left:4px solid var(--brand2);line-height:1.2;color:#fff;
}
.toc{position:relative}
.toc:before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--line)}
.toc a{
  display:flex;align-items:center;gap:12px;padding:8px 0;
  color:var(--muted);font-size:14px;position:relative;transition:.2s;
}
.toc a:before{
  content:"";width:10px;height:10px;border-radius:3px;
  background:var(--dark);border:2px solid var(--line);flex-shrink:0;z-index:1;
}
.toc a.active{color:#fff;font-weight:700}
.toc a.active:before{background:var(--brand2);border-color:var(--brand2)}
.rank{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.rank:last-child{border:none}
.rank .rn{
  width:28px;height:28px;border-radius:8px;display:flex;align-items:center;
  justify-content:center;font-weight:800;font-size:13px;color:#04161a;flex-shrink:0;
}
.rn-1{background:linear-gradient(135deg,#0ea5e9,#10b981)}
.rn-2{background:linear-gradient(135deg,#22d3ee,#0891b2)}
.rn-3{background:linear-gradient(135deg,#fbbf24,#f59e0b)}
.rn-x{background:#1e4a54}
.rank a{font-size:14px;color:#c8e3e6}
.rank a:hover{color:#6ee7b7}
.rank:hover .rn{transform:scale(1.1)}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags a{
  font-size:13px;color:#6ee7b7;border:1px solid var(--line);
  padding:6px 14px;border-radius:8px;transition:.2s;
}
.tags a:hover{background:var(--brand2);color:#04161a;border-color:var(--brand2)}

/* ---------- 评论 ---------- */
.comments{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;margin-top:30px}
.comments h3{font-size:20px;margin-bottom:20px;color:#fff}
.cmt{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.cmt:last-child{border:none}
.cmt .av{
  width:40px;height:40px;border-radius:10px;background:var(--grad);color:#04161a;
  display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;
}
.cmt b{font-size:14px;display:block;color:#fff}
.cmt .d{font-size:12px;color:var(--muted)}
.cmt p{font-size:14px;color:#c8e3e6;margin-top:6px}

/* ---------- 上下篇 ---------- */
.pagnav{display:flex;justify-content:space-between;gap:16px;margin-top:30px}
.pagnav a{flex:1;border:1px solid var(--line);border-radius:12px;padding:16px 20px;transition:.2s;background:var(--card)}
.pagnav a:hover{border-color:var(--brand2);background:rgba(16,185,129,.1)}
.pagnav span{font-size:12px;color:var(--muted);display:block}
.pagnav b{font-size:14px;color:#fff}

/* ---------- 站点地图 ---------- */
.smap-col{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.smap-col h2{font-size:20px;margin-bottom:18px;padding-left:12px;border-left:4px solid var(--brand2);color:#fff}
.smap-col a{display:block;padding:8px 0;color:#c8e3e6;font-size:15px;border-bottom:1px dashed var(--line)}
.smap-col a:hover{color:#6ee7b7}
.smap-col a:last-child{border:none}

/* ---------- 404 ---------- */
.e404{
  min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;
  background:linear-gradient(158deg,#04161a,#0b3a45);color:#fff;
}
.e404 h1{
  font-size:120px;font-weight:900;line-height:1;
  background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.e404 h2{font-size:28px;margin:16px 0}
.e404 p{color:#8db0b8;margin-bottom:30px}

/* ---------- 协议 / 参数 / 极速 区块 ---------- */
.protocol{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.spec{background:var(--dark)}
.speed{background:var(--bg);border-top:1px solid var(--line)}

/* ---------- GEO 增强 ---------- */
.answer-lede{
  border-left:4px solid var(--c1,#10b981);background:rgba(16,185,129,.09);
  padding:16px 20px;border-radius:0 12px 12px 0;margin:18px 0 8px;
  font-size:17px;line-height:1.75;color:#dceff1;
}
.answer-lede b{color:#fff}
.hero-facts{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:#a9cbd0}
.hero-facts li{position:relative;padding-left:16px}
.hero-facts li:before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--brand2)}
.spec-wrap{margin-top:32px;overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px;background:rgba(255,255,255,.03)}
.spec-table caption{caption-side:top;text-align:left;font-size:14px;color:#8db0b8;padding-bottom:10px}
.spec-table th,.spec-table td{border:1px solid rgba(110,231,183,.18);padding:12px 14px;text-align:left;line-height:1.6}
.spec-table thead th{background:rgba(16,185,129,.16);color:#fff;font-weight:700}
.spec-table tbody th{width:26%;color:#bfe0e3;font-weight:600;background:rgba(255,255,255,.02)}
.tldr{background:rgba(251,191,36,.07);border:1px solid rgba(251,191,36,.25);border-radius:12px;padding:18px 22px;margin:0 0 22px}
.tldr h2,.tldr h3{font-size:16px;margin:0 0 10px;color:var(--accent);letter-spacing:.5px}
.tldr ul{margin:0;padding-left:20px}
.tldr li{margin:6px 0;line-height:1.7;color:#dceff1}
.faq-short{margin:0 0 8px;font-size:16px;color:#fff;font-weight:600;line-height:1.7}
.updated{margin-top:12px;font-size:13px;color:#78979d;text-align:center}
.updated span{color:#bfe0e3}
ol.steps{list-style:none;padding-left:0;margin:0}
ol.steps li{list-style:none}
.art-cta{
  margin:26px 0;padding:16px 20px;border-left:4px solid var(--brand2);
  background:rgba(16,185,129,.08);border-radius:0 12px 12px 0;line-height:1.8;color:#dceff1;
}
.art-cta a{color:#6ee7b7;text-decoration:underline}

/* ---------- 响应式 ---------- */
@media(max-width:992px){
  .menu{
    position:fixed;top:70px;left:0;right:0;background:rgba(4,22,26,.98);
    flex-direction:column;align-items:stretch;padding:20px;gap:4px;
    transform:translateY(-140%);transition:.3s;
    max-height:calc(100vh - 70px);overflow-y:auto;border-bottom:1px solid var(--line);
  }
  .menu.open{transform:translateY(0)}
  .drop{
    position:static;opacity:1;visibility:visible;transform:none;
    background:rgba(255,255,255,.05);box-shadow:none;
    margin:4px 0 8px 12px;display:none;border:none;
  }
  .menu>li.open .drop{display:block}
  .burger{display:flex}
  .nav-cta .btn-login{display:none}
  .hero{padding:130px 0 82px}
  .hero-grid,.dl-grid{grid-template-columns:1fr;gap:38px}
  .grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .art-wrap{grid-template-columns:1fr}
  .side{position:static}
  .sys{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:35px}
  .sec-title{font-size:30px}
}
@media(max-width:768px){
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .sys{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr}
  .hero h1{font-size:29px}
  .sec{padding:64px 0}
  .stats{gap:22px}
  .stat b{font-size:24px}
  .demo-stats{grid-template-columns:1fr}
  .phero{padding:130px 0 58px}
  .phero h1{font-size:31px}
  .art h1{font-size:24px}
  .ver{flex-direction:column;text-align:center}
  .spec-table{font-size:14px}
  .answer-lede{font-size:16px}
  .step .num{width:54px;height:54px;font-size:21px}
}
@media(max-width:480px){
  .wrap{padding:0 16px}
  .hero h1{font-size:24px}
  .btn{padding:12px 21px;font-size:14px}
  .stats{flex-direction:column;gap:16px}
  .stat{display:flex;align-items:center;gap:10px}
  .stat b{font-size:22px}
  .steps{grid-template-columns:1fr}
  .sec-title{font-size:26px}
  .cta h2{font-size:27px}
}