/* ============================================================
 * quickq1i.com —— 工程控制台风（第二版）
 * 与参考站的关键差异：
 *   左侧竖向导轨导航 / 居中大标题首屏 / Bento 非对称版块 /
 *   规格表式功能清单 / 表格化定价 / 等宽字标示数据
 * ============================================================ */

:root{
  --bg:#08090d;
  --bg-2:#0a0b10;
  --panel:#0c0e14;
  --panel-2:#101319;
  --line:#1b1f28;
  --line-soft:#15181f;
  --txt:#e8ecf4;
  --txt-2:#b3bbc9;
  --muted:#8b95a8;
  --dim:#5b6478;
  --acc:#ff8a4c;
  --acc-2:#ffcf5c;
  --acc-soft:rgba(255,138,76,.1);
  --ok:#34d399;
  --grad:linear-gradient(96deg,#ff8a4c,#ffcf5c);
  --mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Mono",Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --rail:92px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--txt);
  font:15.5px/1.7 var(--sans);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg{display:block;max-width:100%}
ul,ol{list-style:none}
::selection{background:rgba(255,138,76,.3)}

.kicker{font-family:var(--mono);font-size:11px;letter-spacing:2.4px;text-transform:uppercase;color:var(--acc)}

/* ---------------- 按钮 ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:9px;
  font-size:14.5px;font-weight:600;transition:.2s;border:1px solid transparent;white-space:nowrap}
.btn-solid{background:var(--grad);color:#1a1206;font-weight:700;box-shadow:0 10px 26px -10px rgba(255,138,76,.75)}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 16px 32px -12px rgba(255,138,76,.85)}
.btn-line{border-color:var(--line);color:var(--txt-2);background:rgba(255,255,255,.015)}
.btn-line:hover{border-color:#39414f;color:var(--txt);background:rgba(255,255,255,.04)}

/* ---------------- 左侧导轨 ---------------- */
.rail{position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:200;
  display:flex;flex-direction:column;align-items:center;padding:18px 0 20px;
  background:var(--bg-2);border-right:1px solid var(--line)}
.rail-logo{display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--acc);flex:none}
.rail-logo i{font-style:normal;font-family:var(--mono);font-size:10px;letter-spacing:2px;color:var(--dim)}
.rail-nav{flex:1;display:flex;flex-direction:column;gap:4px;padding-top:28px;width:100%;align-items:center}
.rail-item{width:66px;padding:11px 0 9px;border-radius:11px;display:flex;flex-direction:column;align-items:center;gap:5px;
  color:#79839a;font-size:11px;transition:.18s;position:relative}
.rail-item:hover{color:var(--txt);background:#12151c}
.rail-item.is-on{color:var(--acc);background:var(--acc-soft);box-shadow:inset 0 0 0 1px rgba(255,138,76,.22)}
.rail-item.is-on::before{content:"";position:absolute;left:-13px;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--acc)}
.rail-cta{margin-top:auto;width:66px;padding:13px 0 11px;border-radius:11px;display:flex;flex-direction:column;
  align-items:center;gap:5px;font-size:11px;color:#1a1206;background:var(--grad);font-weight:700}
.rail-cta:hover{filter:brightness(1.06)}

/* ---------------- 移动端顶栏 ---------------- */
.mbar{display:none;position:sticky;top:0;z-index:210;height:58px;padding:0 16px;
  align-items:center;justify-content:space-between;background:rgba(8,9,13,.92);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.mbar-logo{display:flex;align-items:baseline;gap:7px;font-size:17px;font-weight:800;letter-spacing:-.3px}
.mbar-logo i{font-style:normal;font-family:var(--mono);font-size:9px;letter-spacing:1.6px;color:var(--dim)}
.mbar-btn{width:38px;height:34px;display:flex;flex-direction:column;justify-content:center;gap:6px;align-items:center;
  border:1px solid var(--line);border-radius:9px}
.mbar-btn span{width:16px;height:1.5px;background:var(--txt);border-radius:2px;transition:.25s}
.mbar-btn.is-open span:first-child{transform:translateY(3.7px) rotate(45deg)}
.mbar-btn.is-open span:last-child{transform:translateY(-3.7px) rotate(-45deg)}
.sheet{position:fixed;inset:58px 0 0;z-index:205;background:var(--bg-2);padding:20px 18px 40px;
  transform:translateY(-8px);opacity:0;visibility:hidden;transition:.22s}
.sheet.is-open{transform:none;opacity:1;visibility:visible}
.sheet-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.sheet-nav a{display:flex;align-items:center;gap:12px;padding:15px 4px;border-bottom:1px solid var(--line);
  color:var(--txt-2);font-size:15px}
.sheet-nav a.is-on{color:var(--acc)}
.sheet-cta{margin-top:22px;width:100%}
.sheet-note{margin-top:16px;font-size:12px;color:var(--dim)}

/* ---------------- 外壳 ---------------- */
.shell{margin-left:var(--rail);min-width:0}
.main{min-height:60vh}
.shell-in{max-width:1180px;margin:0 auto;padding:0 26px}

/* ---------------- 首屏 ---------------- */
.hero{position:relative;padding:104px 0 0;overflow:hidden;text-align:center;
  background:
    radial-gradient(ellipse 52% 46% at 50% -10%,rgba(255,138,76,.14),transparent 60%),
    radial-gradient(ellipse 40% 32% at 82% 12%,rgba(90,120,255,.08),transparent 65%),
    var(--bg)}
.hero-orbit{position:absolute;left:50%;top:-140px;width:900px;height:900px;transform:translateX(-50%);pointer-events:none}
.hero-orbit i{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;
  border:1px solid rgba(255,255,255,.045)}
.hero-orbit i:nth-child(1){width:300px;height:300px;border-color:rgba(255,138,76,.18)}
.hero-orbit i:nth-child(2){width:560px;height:560px}
.hero-orbit i:nth-child(3){width:820px;height:820px;border-style:dashed;border-color:rgba(255,255,255,.03)}
.hero-in{position:relative;z-index:1;max-width:880px;margin:0 auto;padding:0 24px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  border:1px solid rgba(255,138,76,.26);background:rgba(255,138,76,.07);
  font-family:var(--mono);font-size:11px;letter-spacing:1.2px;color:#ffc39c;margin-bottom:26px}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--acc);box-shadow:0 0 8px var(--acc)}
.hero h1{font-size:74px;line-height:1.03;letter-spacing:-3px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--acc);position:relative;display:inline-block}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--grad);opacity:.5}
.hero-lede{color:var(--muted);font-size:16.5px;max-width:600px;margin:26px auto 32px}
.hero-actions{display:flex;gap:11px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:64px;border-top:1px solid var(--line);text-align:left}
.hero-stats>div{padding:22px 0 24px 18px;border-right:1px solid var(--line)}
.hero-stats>div:last-child{border-right:0}
.hero-stats dt{font-family:var(--mono);font-size:28px;font-weight:700;letter-spacing:-1px;line-height:1.2}
.hero-stats dt i{font-style:normal;font-size:12px;color:var(--muted);margin-left:2px;letter-spacing:0}
.hero-stats dd{font-size:11.5px;color:var(--dim);font-family:var(--mono);letter-spacing:.6px;margin-top:4px}

/* ---------------- 版块 ---------------- */
.band{max-width:1180px;margin:0 auto;padding:76px 26px}
.band-tight{padding-top:26px}
.band-head{border-top:1px solid var(--line);padding-top:20px;margin-bottom:38px}
.bh-left{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}
.bh-no{font-family:var(--mono);font-size:11px;color:var(--acc);letter-spacing:1px}
.bh-k{font-family:var(--mono);font-size:10.5px;letter-spacing:2.2px;text-transform:uppercase;color:var(--dim)}
.band-head h2{font-size:38px;line-height:1.18;letter-spacing:-1.4px;font-weight:800;max-width:760px}
.band-head h2 em{font-style:normal;color:var(--acc)}
.band-head p{color:var(--muted);font-size:14.5px;max-width:600px;margin-top:12px}
.band-more{margin-top:26px}
.link-arrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.4px;color:var(--acc);border-bottom:1px solid rgba(255,138,76,.35);padding-bottom:2px}
.link-arrow:hover{color:var(--acc-2);border-color:var(--acc-2)}

/* ---------------- Bento ---------------- */
.bento{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:minmax(186px,auto);gap:12px}
.tile{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--panel);position:relative;overflow:hidden;
  display:flex;flex-direction:column;transition:.25s}
.tile:hover{border-color:#2b3240;background:var(--panel-2)}
.t-kicker{font-family:var(--mono);font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--dim);margin-bottom:auto}
.tile h3{font-size:19px;font-weight:700;letter-spacing:-.4px;margin:14px 0 8px}
.tile p{color:var(--muted);font-size:13px;line-height:1.65}
.t1{grid-column:span 2;grid-row:span 2}
.t6{grid-column:span 2}
.t7{grid-column:span 2}
.t-num{position:absolute;right:18px;bottom:6px;font-family:var(--mono);font-size:64px;font-weight:700;
  color:rgba(255,138,76,.13);line-height:1;pointer-events:none}

/* 大号数字（t1） */
.t1 .t-kicker{margin-bottom:22px}
.t1-fig{font-family:var(--mono);font-size:76px;line-height:1;font-weight:700;letter-spacing:-3px;color:var(--txt)}
.t1-fig i{display:block;font-style:normal;font-size:12px;letter-spacing:2px;color:var(--dim);margin-top:10px;font-weight:400}
.t1 h3{margin-top:18px}
.t1-stats{display:flex;gap:28px;margin-top:auto;padding-top:22px}
.t1-stats b{display:block;font-family:var(--mono);font-size:17px;font-weight:700;letter-spacing:-.4px}
.t1-stats span{display:block;font-size:10.5px;color:var(--dim);letter-spacing:.6px;margin-top:2px}
/* 地球视觉 */
.globe{position:absolute;right:-30px;bottom:-40px;width:230px;height:230px;pointer-events:none}
.globe .ring{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;
  border:1px solid rgba(255,138,76,.22)}
.globe .r1{width:90px;height:90px}
.globe .r2{width:150px;height:150px;border-color:rgba(255,255,255,.07)}
.globe .r3{width:210px;height:210px;border-color:rgba(255,255,255,.045);border-style:dashed}
.globe .dot{position:absolute;left:var(--x);top:var(--y);width:6px;height:6px;border-radius:50%;
  background:var(--acc);box-shadow:0 0 10px rgba(255,138,76,.9)}
.globe .dot:nth-child(5){background:var(--acc-2);box-shadow:0 0 10px rgba(255,207,92,.8)}

/* 迷你柱状 */
.spark{display:flex;align-items:flex-end;gap:5px;height:54px;margin-top:auto;padding-top:14px}
.spark i{flex:1;height:var(--h);background:linear-gradient(180deg,var(--acc),rgba(255,138,76,.25));border-radius:2px}

/* 平台行 */
.os-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:auto;padding-top:18px}
.os-row a{display:flex;flex-direction:column;align-items:center;gap:7px;padding:13px 6px;border:1px solid var(--line);
  border-radius:10px;color:var(--txt-2);font-size:11.5px;transition:.2s}
.os-row a:hover{border-color:rgba(255,138,76,.4);color:var(--acc);background:rgba(255,138,76,.05)}

/* 迷你步骤 */
.mini-steps{margin-top:auto;padding-top:16px;display:flex;flex-direction:column;gap:9px}
.mini-steps li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--txt-2)}
.mini-steps b{display:grid;place-items:center;width:22px;height:22px;border-radius:6px;
  background:var(--acc-soft);color:var(--acc);font-family:var(--mono);font-size:11px;font-weight:700}

/* ---------------- 规格表 ---------------- */
.specs{border-top:1px solid var(--line)}
.spec{display:grid;grid-template-columns:46px minmax(160px,220px) 1fr 54px;gap:20px;align-items:baseline;
  padding:19px 4px;border-bottom:1px solid var(--line-soft);transition:.18s}
.spec:hover{background:rgba(255,255,255,.014)}
.spec-no{font-family:var(--mono);font-size:11px;color:var(--dim)}
.spec h3{font-size:16.5px;font-weight:700;letter-spacing:-.2px}
.spec p{color:var(--muted);font-size:13.5px;line-height:1.7}
.spec-tag{font-family:var(--mono);font-size:10.5px;color:var(--dim);text-align:right;letter-spacing:1px}

/* ---------------- 节点列表 ---------------- */
.node-panel{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel)}
.nrow{display:grid;grid-template-columns:50px max-content max-content minmax(80px,1fr) 72px;gap:16px;align-items:center;
  padding:14px 18px;border-bottom:1px solid var(--line-soft);font-size:14px}
.nrow:last-child{border-bottom:0}
.nrow:hover{background:rgba(255,255,255,.015)}
.nrow-code{font-family:var(--mono);font-size:10.5px;color:var(--acc);text-align:center;
  border:1px solid rgba(255,138,76,.28);border-radius:5px;padding:3px 0}
.nrow b{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nrow-region{font-size:11.5px;color:var(--dim);font-family:var(--mono)}
.nrow-bar{height:4px;border-radius:2px;background:#1a1e27;overflow:hidden}
.nrow-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),var(--acc-2));border-radius:2px}
.nrow-ping{font-family:var(--mono);font-size:12px;color:var(--muted);text-align:right}

/* ---------------- 定价表 ---------------- */
.price-wrap{border:1px solid var(--line);border-radius:14px;overflow:auto;background:var(--panel)}
.price-table{width:100%;border-collapse:collapse;min-width:700px}
.price-table th,.price-table td{padding:15px 18px;border-bottom:1px solid var(--line-soft);text-align:center}
.price-table thead th{background:#0a0c11;vertical-align:bottom;padding-top:22px;padding-bottom:20px}
.ph-empty{width:180px}
.ph-name{display:block;font-size:12px;color:var(--muted);letter-spacing:.5px;font-weight:500}
.ph-price{display:block;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--txt);letter-spacing:-1px;margin-top:8px}
.ph-price i{font-style:normal;font-size:11px;color:var(--dim);font-weight:400;letter-spacing:0;margin-left:2px}
.ph-flag{display:inline-block;margin-top:10px;padding:2px 9px;border-radius:999px;background:var(--acc-soft);
  color:var(--acc);font-size:10px;font-family:var(--mono);letter-spacing:1px;border:1px solid rgba(255,138,76,.28)}
.price-table tbody th{text-align:left;font-weight:400;font-size:13px;color:var(--muted);padding-left:22px}
.price-table td{font-size:13.5px;color:var(--txt-2);font-family:var(--mono)}
.price-table .is-hot{background:rgba(255,138,76,.045)}
.price-cta th,.price-cta td{border-bottom:0;padding:20px}
.price-cta .btn{width:100%;padding:10px 14px;font-size:13px}

/* ---------------- 资讯卡 ---------------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.ncard{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel);
  display:flex;flex-direction:column;transition:.25s}
.ncard:hover{border-color:#2b3240;transform:translateY(-2px)}
.ncard-thumb{background:#0a0c11;overflow:hidden}
.ncard-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .45s}
.ncard:hover .ncard-thumb img{transform:scale(1.04)}
.ncard-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.ncard-meta{display:flex;gap:12px;font-family:var(--mono);font-size:10.5px;color:var(--dim);letter-spacing:.4px}
.ncard-meta span:first-child{color:var(--acc)}
.ncard h3{font-size:15.5px;line-height:1.5;font-weight:700;margin:9px 0 7px;letter-spacing:-.2px}
.ncard p{font-size:12.5px;color:var(--muted);line-height:1.65;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ncard-go{margin-top:14px;font-family:var(--mono);font-size:11.5px;color:var(--acc)}

/* ---------------- FAQ ---------------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.faq{border-top:1px solid var(--line);padding:14px 0}
.faq summary{display:flex;align-items:baseline;gap:12px;cursor:pointer;list-style:none;
  font-size:14.5px;font-weight:600;line-height:1.55;color:var(--txt)}
.faq summary::-webkit-details-marker{display:none}
.faq-no{font-family:var(--mono);font-size:10.5px;color:var(--dim);flex:none;padding-top:2px}
.faq-mark{margin-left:auto;flex:none;width:12px;height:12px;position:relative;align-self:center}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--dim);border-radius:1px}
.faq-mark::before{left:0;right:0;top:5.5px;height:1.5px}
.faq-mark::after{top:0;bottom:0;left:5.5px;width:1.5px;transition:.2s}
.faq[open] .faq-mark::after{transform:scaleY(0)}
.faq[open] summary{color:var(--acc)}
.faq-body p{color:var(--muted);font-size:13.5px;line-height:1.8;margin:10px 0 4px 32px}

/* ---------------- CTA ---------------- */
.cta{border-top:1px solid var(--line);padding:92px 26px;text-align:center;
  background:radial-gradient(ellipse 46% 60% at 50% 100%,rgba(255,138,76,.1),transparent 65%)}
.cta-in{max-width:680px;margin:0 auto}
.cta h2{font-size:42px;line-height:1.22;letter-spacing:-1.4px;font-weight:800;margin:14px 0 26px}
.cta-row{display:flex;gap:11px;justify-content:center;flex-wrap:wrap}
.cta-note{margin-top:22px;font-size:11.5px;color:var(--dim);line-height:1.7}

/* ---------------- 页脚 ---------------- */
.foot{border-top:1px solid var(--line);background:#06070a;padding:52px 0 0}
.foot-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.f-logo{display:inline-flex;align-items:baseline;gap:8px;font-size:17px;font-weight:800;margin-bottom:14px}
.f-logo i{font-style:normal;font-family:var(--mono);font-size:9px;letter-spacing:1.8px;color:var(--dim)}
.f-brand p{color:var(--dim);font-size:12.5px;line-height:1.75;max-width:330px}
.f-col h4{font-size:11px;font-family:var(--mono);letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.f-col a{display:block;font-size:13px;color:var(--dim);padding:5px 0;transition:.18s}
.f-col a:hover{color:var(--acc)}
.foot-bottom{display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between;padding:18px 0;
  border-top:1px solid var(--line-soft);font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.4px}

/* ---------------- 内页头 ---------------- */
.phead{padding:84px 0 44px;border-bottom:1px solid var(--line);
  background:radial-gradient(ellipse 44% 70% at 22% 0%,rgba(255,138,76,.09),transparent 62%),var(--bg)}
.phead-in{max-width:1180px;margin:0 auto;padding:0 26px}
.crumb{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-family:var(--mono);font-size:11px;
  color:var(--dim);letter-spacing:.4px;margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--acc)}
.crumb i{font-style:normal;color:#2d3442}
.phead h1{font-size:48px;line-height:1.12;letter-spacing:-1.8px;font-weight:800;margin:14px 0 0}
.phead h1 em{font-style:normal;color:var(--acc)}
.phead-lead{color:var(--muted);font-size:15.5px;max-width:680px;margin-top:16px}

/* ---------------- 通用块 ---------------- */
.prose-wrap{max-width:800px}
.prose-wrap h2{font-size:24px;letter-spacing:-.5px;margin:38px 0 12px;padding-left:14px;border-left:2px solid var(--acc)}
.prose-wrap h2:first-child{margin-top:0}
.prose-wrap p{color:var(--txt-2);font-size:15px;line-height:1.9;margin-bottom:14px}
.prose-wrap a{color:var(--acc);border-bottom:1px solid rgba(255,138,76,.35)}
.prose .h2s h2{font-size:24px;margin:34px 0 12px;padding-left:14px;border-left:2px solid var(--acc)}
.prose p{color:var(--txt-2);font-size:15px;line-height:1.9;margin-bottom:14px}

.cmp{border:1px solid var(--line);border-radius:14px;overflow:auto;background:var(--panel)}
.cmp-table{width:100%;border-collapse:collapse;min-width:620px}
.cmp-table th,.cmp-table td{padding:14px 18px;border-bottom:1px solid var(--line-soft);text-align:left;font-size:13.5px}
.cmp-table thead th{font-family:var(--mono);font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--dim);background:#0a0c11}
.cmp-table td{color:var(--muted)}
.cmp-table .own{color:var(--acc);font-weight:600}
.cmp-table tbody tr:last-child td{border-bottom:0}

.triple{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.triple-item{border:1px solid var(--line);border-radius:12px;padding:22px;background:var(--panel);transition:.22s}
.triple-item h3{font-size:16px;margin-bottom:8px}
.triple-item p{color:var(--muted);font-size:13.5px;line-height:1.7}
.triple-item.link:hover{border-color:rgba(255,138,76,.4);background:var(--panel-2)}
.triple-item.link .link-arrow{display:inline-block;margin-top:14px}

.steps-line{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.step-item{padding:26px 22px 26px 0;border-right:1px solid var(--line-soft)}
.step-item:last-child{border-right:0}
.step-item>span{font-family:var(--mono);font-size:11px;color:var(--acc);letter-spacing:1px}
.step-item h3{font-size:16px;margin:10px 0 8px}
.step-item p{color:var(--muted);font-size:13px;line-height:1.7}

.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.scene{border:1px solid var(--line);border-radius:12px;padding:22px;background:var(--panel);transition:.22s}
.scene:hover{border-color:#2b3240}
.scene h3{font-size:15.5px;margin-bottom:8px}
.scene p{color:var(--muted);font-size:13px;line-height:1.7}

.os-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.os-card{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--panel);
  display:flex;flex-direction:column;transition:.22s}
.os-card:hover{border-color:#2b3240;transform:translateY(-2px)}
.os-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;color:var(--acc)}
.os-ver{font-family:var(--mono);font-size:10.5px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:2px 7px}
.os-card h3{font-size:17px}
.os-size{font-family:var(--mono);font-size:11.5px;color:var(--dim);margin:4px 0 14px}
.os-notes{flex:1;display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.os-notes li{font-size:12.5px;color:var(--muted);display:flex;gap:8px;line-height:1.55}
.os-notes li::before{content:"·";color:var(--acc)}
.os-btn{width:100%;padding:9px;font-size:12.5px}

.req-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.req{border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--panel)}
.req h3{font-size:15px;margin-bottom:10px}
.req ul{display:flex;flex-direction:column;gap:6px}
.req li{font-size:13px;color:var(--muted)}
.req li::before{content:"— ";color:var(--dim)}

.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:44px;align-items:start}
.split-main h2{font-size:26px;letter-spacing:-.6px;margin-bottom:16px}
.split-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.tick-list{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.tick-list li{display:flex;gap:10px;font-size:14px;color:var(--txt-2)}
.tick-list li::before{content:"✓";color:var(--ok);font-weight:700}
.muted-p{color:var(--dim);font-size:12.5px;line-height:1.7}
.spec-card{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:8px 20px}
.spec-line{display:flex;justify-content:space-between;align-items:center;padding:13px 0;
  border-bottom:1px solid var(--line-soft);font-size:13px}
.spec-line:last-child{border-bottom:0}
.spec-line span{color:var(--dim);font-family:var(--mono);font-size:11px;letter-spacing:.6px}
.spec-line b{font-weight:600}

.callout{display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  border:1px solid var(--line);border-radius:14px;padding:26px 28px;background:var(--panel)}
.callout h3{font-size:18px;margin-bottom:6px}
.callout p{color:var(--muted);font-size:13.5px}

.contact{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.contact>div{border:1px solid var(--line);border-radius:10px;padding:16px 18px;background:var(--panel)}
.contact span{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:1px;color:var(--dim);margin-bottom:5px}
.contact b{font-size:14px}

.filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{padding:6px 14px;border-radius:999px;border:1px solid var(--line);color:var(--muted);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.5px;transition:.18s}
.chip:hover{color:var(--txt);border-color:#39414f}
.chip.is-on{background:var(--acc-soft);border-color:rgba(255,138,76,.4);color:var(--acc)}
.empty{display:none;text-align:center;color:var(--dim);padding:40px 0;font-size:13px}
.empty.show{display:block}

/* ---------------- 文章 ---------------- */
.ahead{padding:72px 0 0}
.ahead-in{max-width:860px;margin:0 auto;padding:0 26px}
.ahead-meta{display:flex;gap:14px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:var(--dim);
  letter-spacing:.5px;margin-bottom:14px}
.ahead-meta span:first-child{color:var(--acc)}
.ahead h1{font-size:38px;line-height:1.28;letter-spacing:-1.4px;font-weight:800}
.ahead-lead{color:var(--muted);font-size:15.5px;margin-top:16px}
.ahead-cover{margin-top:28px;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.ahead-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-grid{max-width:1180px;margin:0 auto;padding:0 26px;display:grid;
  grid-template-columns:220px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:26px}
.toc h4{font-family:var(--mono);font-size:10px;letter-spacing:2px;color:var(--dim);margin-bottom:12px}
.toc-link{display:block;padding:7px 0 7px 12px;border-left:1px solid var(--line);
  color:var(--muted);font-size:12.5px;line-height:1.5;transition:.18s}
.toc-link:hover{color:var(--txt-2)}
.toc-link.is-on{color:var(--acc);border-left-color:var(--acc)}
.article{max-width:760px}
.article h2{font-size:23px;letter-spacing:-.5px;margin:36px 0 14px;padding-left:14px;border-left:2px solid var(--acc);scroll-margin-top:20px}
.article h2:first-child{margin-top:0}
.article p{color:var(--txt-2);font-size:15px;line-height:1.95;margin-bottom:16px}
.article-note{margin:30px 0;border:1px solid rgba(255,138,76,.25);border-radius:12px;padding:20px 22px;
  background:rgba(255,138,76,.05)}
.article-note b{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:2px;color:var(--acc);margin-bottom:8px}
.article-note p{margin:0;font-size:13.5px;color:var(--txt-2)}
.article-note a{color:var(--acc);border-bottom:1px solid rgba(255,138,76,.4)}
.article-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);font-size:13px}
.article-foot a{color:var(--muted)}
.article-foot a:hover{color:var(--acc)}
.article-foot .next{color:var(--acc);text-align:right;max-width:52%}

/* ---------------- 站点地图 / 404 ---------------- */
.map-group{margin-bottom:30px}
.map-group h2{font-family:var(--mono);font-size:11px;letter-spacing:2px;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.map-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.map-links a{display:flex;justify-content:space-between;align-items:center;gap:14px;
  border:1px solid var(--line);border-radius:9px;padding:12px 16px;font-size:13.5px;color:var(--txt-2);transition:.18s}
.map-links a i{font-style:normal;font-family:var(--mono);font-size:10.5px;color:var(--dim)}
.map-links a:hover{border-color:rgba(255,138,76,.4);color:var(--acc)}
.e404{text-align:center;padding:150px 24px 120px}
.e404-code{font-family:var(--mono);font-size:120px;font-weight:700;line-height:1;letter-spacing:-6px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.e404 h1{font-size:30px;letter-spacing:-.8px;margin:14px 0 10px}
.e404 p{color:var(--muted);margin-bottom:28px}

/* ---------------- 入场动画 ---------------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1180px){
  .hero h1{font-size:60px;letter-spacing:-2.4px}
  .band-head h2{font-size:32px}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .t1{grid-column:span 2;grid-row:span 1}
  .t6,.t7{grid-column:span 2}
  .os-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps-line{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-item:nth-child(2){border-right:0}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .toc{position:static;display:flex;flex-wrap:wrap;gap:6px}
  .toc h4{width:100%}
  .toc-link{border-left:0;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:11.5px}
  .toc-link.is-on{border-color:rgba(255,138,76,.4)}
}
@media (max-width:1120px){
  .rail{display:none}
  .shell{margin-left:0}
  .mbar{display:flex}
  .hero{padding-top:64px}
  .phead{padding-top:54px}
  .ahead{padding-top:48px}
}
@media (max-width:860px){
  .hero h1{font-size:44px;letter-spacing:-1.8px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stats>div:nth-child(2){border-right:0}
  .hero-stats>div:nth-child(1),.hero-stats>div:nth-child(2){border-bottom:1px solid var(--line)}
  .band{padding:56px 20px}
  .phead-in,.shell-in,.article-grid,.ahead-in{padding:0 20px}
  .band-head h2{font-size:27px;letter-spacing:-1px}
  .phead h1{font-size:34px}
  .ahead h1{font-size:27px}
  .spec{grid-template-columns:34px minmax(0,1fr) 44px;gap:12px}
  .spec p{grid-column:2 / -1}
  .spec-tag{grid-row:2;grid-column:3}
  .faq-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .triple,.scene-grid,.req-grid{grid-template-columns:minmax(0,1fr)}
  .split{grid-template-columns:minmax(0,1fr);gap:26px}
  .cta h2{font-size:30px}
  .foot-top{grid-template-columns:1fr 1fr}
  .nrow{grid-template-columns:44px minmax(0,1fr) 64px;gap:12px}
  .nrow-region,.nrow-bar{display:none}
  .map-links{grid-template-columns:minmax(0,1fr)}
  .e404-code{font-size:88px}
}
@media (max-width:620px){
  .hero-orbit{display:none}
  .hero h1{font-size:34px;letter-spacing:-1.4px}
  .hero-lede{font-size:14.5px}
  .hero-actions .btn{flex:1}
  .bento{grid-template-columns:minmax(0,1fr)}
  .t1,.t6,.t7{grid-column:span 1}
  .news-grid{grid-template-columns:minmax(0,1fr)}
  .os-grid{grid-template-columns:minmax(0,1fr)}
  .steps-line{grid-template-columns:minmax(0,1fr)}
  .step-item{border-right:0;border-bottom:1px solid var(--line-soft)}
  .foot-top{grid-template-columns:minmax(0,1fr)}
  .cta{padding:60px 20px}
  .cta h2{font-size:26px}
  .hero-stats>div{padding-left:12px}
  .article-foot .next{max-width:100%;text-align:left}
}