/* 砚山IPTV 官网 · 设计系统 */
:root{
  --navy-950:#070f19; --navy-900:#0a1626; --navy-850:#0d1c30; --navy-800:#102338;
  --navy-700:#17324c; --navy-600:#21415f;
  --ink:#12202f; --ink-2:#2b3d50; --muted:#5c6f82; --line:#e3e8ee;
  --bg:#f5f7fa; --card:#ffffff;
  --accent:#12b3a6; --accent-2:#1f7ad1; --gold:#d9a94c;
  --grad:linear-gradient(120deg,#12b3a6 0%,#1f7ad1 60%,#4c6ef5 100%);
  --grad-gold:linear-gradient(120deg,#d9a94c,#e8c777);
  --shadow:0 20px 50px -24px rgba(16,35,56,.35);
  --shadow-2:0 30px 70px -30px rgba(16,35,56,.5);
  --radius:16px; --radius-lg:22px;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section.tight{padding:56px 0}
h1,h2,h3{line-height:1.2;margin:0}
h2.title{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.5px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px}
.lead{color:var(--muted);font-size:clamp(15px,1.5vw,18px);max-width:760px}
.center{text-align:center} .center .lead{margin-left:auto;margin-right:auto}
.muted{color:var(--muted)}

/* ---------- 顶部促销条 ---------- */
.promo-bar{background:linear-gradient(90deg,#12b3a6,#1f7ad1);color:#fff;font-size:13.5px;font-weight:600;letter-spacing:.2px}
.promo-bar .wrap{padding:9px 24px;text-align:center}
.promo-bar b{font-weight:900}
.promo-bar a{color:#fff;text-decoration:underline;margin-left:8px;white-space:nowrap}

/* ---------- 顶栏 ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(10,22,38,.94);
  backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.07)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:42px;
  border:1px solid rgba(255,255,255,.25);border-radius:10px;background:rgba(255,255,255,.06);cursor:pointer;padding:0 11px;margin-left:12px}
.nav-toggle span{display:block;height:2px;background:#e6eef7;border-radius:2px;transition:.25s}
.nav-toggle.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.on span:nth-child(2){opacity:0}
.nav-toggle.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
header.site .bar{display:flex;align-items:center;gap:28px;height:70px}
header.site .logo{display:flex;align-items:center;gap:12px}
header.site .logo img{height:38px;width:auto}
header.site .logo.brand-co{color:#fff;font-weight:800;font-size:20px;letter-spacing:.5px;white-space:nowrap}
nav.main{display:flex;gap:18px;margin-left:auto}
nav.main a{color:#c9d6e4;font-size:14px;font-weight:600;opacity:.9;transition:.2s;white-space:nowrap}
nav.main a:hover{color:#fff;opacity:1}
.hd-cta{display:flex;gap:10px;margin-left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:12px;padding:11px 20px;font-weight:700;font-size:15px;cursor:pointer;
  border:1px solid transparent;transition:.2s;white-space:nowrap}
.btn.primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px -12px rgba(31,122,209,.7)}
.btn.primary:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn.ghost{background:rgba(255,255,255,.06);color:#e6eef7;border-color:rgba(255,255,255,.18)}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn.light{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.light:hover{border-color:#c9d3de}
.btn.sm{padding:9px 16px;font-size:14px}
.burger{display:none}

/* ---------- Hero ---------- */
.hero{position:relative;background:
  radial-gradient(1100px 520px at 78% -10%,rgba(31,122,209,.30),transparent 60%),
  radial-gradient(900px 480px at 12% 8%,rgba(18,179,166,.22),transparent 60%),
  linear-gradient(180deg,#0a1626,#0c1c31 60%,#0a1626);
  color:#eaf1f8;overflow:hidden}
.hero:after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:44px 44px;mask-image:linear-gradient(180deg,#000,transparent 78%)}
.hero .inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;
  gap:48px;align-items:center;padding:74px 0 84px}
.hero .logo-hero{height:128px;width:auto;margin-bottom:22px}
.hero h1{font-size:clamp(30px,4.6vw,56px);font-weight:900;letter-spacing:-1px}
.hero h1 .g{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{color:#b9c8da;font-size:clamp(15px,1.6vw,18px);margin:18px 0 30px;max-width:620px}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px}
.hero .note{margin-top:16px;color:#8ea3ba;font-size:13px}
.hero .badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{font-size:13px;color:#cddbea;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:6px 13px}

/* 首屏 3D 旋转轮播（真实软件截图 · 360° 自动旋转） */
.tv{position:relative}
.tv .glow{position:absolute;inset:-60px -30px;pointer-events:none;
  background:radial-gradient(440px 280px at 50% 42%,rgba(31,122,209,.40),transparent 70%);z-index:0}
.carousel3d{position:relative;width:100%;height:440px;perspective:1500px;perspective-origin:50% 44%;z-index:2;
  --iw:300px;--ih:169px;--r:330px;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 13%,#000 87%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 13%,#000 87%,transparent 100%)}
.carousel3d .ring{position:absolute;left:50%;top:46%;width:0;height:0;
  transform-style:preserve-3d;-webkit-transform-style:preserve-3d;
  animation:ys-spin 40s linear infinite;will-change:transform}
.carousel3d:hover .ring{animation-play-state:paused}
.carousel3d .item{position:absolute;width:var(--iw);height:var(--ih);
  left:calc(var(--iw) / -2);top:calc(var(--ih) / -2);border-radius:12px;overflow:hidden;
  border:1px solid rgba(255,255,255,.22);background:#0a1626;
  box-shadow:0 26px 60px -22px rgba(0,0,0,.75);
  backface-visibility:hidden;-webkit-backface-visibility:hidden;
  transform:rotateY(var(--a)) translateZ(var(--r))}
.carousel3d .item img{width:100%;height:100%;object-fit:cover;display:block}
@keyframes ys-spin{from{transform:rotateX(-6deg) rotateY(0deg)}to{transform:rotateX(-6deg) rotateY(-360deg)}}
.c3d-cap{margin-top:6px;text-align:center;color:#8ea3ba;font-size:13px;position:relative;z-index:2}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.stat b{font-size:30px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;color:var(--muted);font-size:14px;margin-top:4px}

/* ---------- 软件截图 / 房价牌截图 ---------- */
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.phones{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:560px;margin-left:auto;margin-right:auto}
.shot{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:.25s;cursor:zoom-in}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cfdbe8}
.shot img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;background:#0a1626}
.phones .shot img{aspect-ratio:9/16;background:#e8edf3}
.shot figcaption{padding:10px 14px;font-size:13.5px;color:var(--muted);border-top:1px solid var(--line)}

/* ---------- 房价牌（赠品） ---------- */
.rb-banner{text-align:center;background:
  radial-gradient(760px 320px at 50% -10%,rgba(217,169,76,.16),transparent 60%),
  linear-gradient(120deg,rgba(18,179,166,.08),rgba(31,122,209,.08));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px 28px;box-shadow:var(--shadow)}
.rb-banner .eyebrow{color:#c9973b}
.rb-title{font-size:clamp(24px,3.4vw,42px);font-weight:900;letter-spacing:-.5px;margin:8px 0 14px;color:var(--ink)}
.rb-title b{color:#c9973b}
.rb-banner .lead{margin-left:auto;margin-right:auto;margin-bottom:22px}
.rb-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- 图片灯箱 ---------- */
.lightbox{position:fixed;inset:0;background:rgba(6,14,24,.92);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;z-index:200;padding:40px}
.lightbox.on{display:flex}
.lightbox img{max-width:92vw;max-height:84vh;border-radius:12px;box-shadow:var(--shadow-2);background:#0a1626}
.lightbox .lb-cap{position:absolute;left:0;right:0;bottom:20px;text-align:center;color:#cfdbea;font-size:14.5px;font-weight:600}
.lightbox .lb-x,.lightbox .lb-prev,.lightbox .lb-next{position:absolute;border:0;cursor:pointer;
  background:rgba(255,255,255,.12);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:.2s}
.lightbox .lb-x{top:18px;right:22px;width:44px;height:44px;font-size:26px;line-height:1}
.lightbox .lb-prev,.lightbox .lb-next{top:50%;transform:translateY(-50%);width:56px;height:56px;font-size:38px;line-height:1}
.lightbox .lb-prev{left:22px} .lightbox .lb-next{right:22px}
.lightbox .lb-x:hover,.lightbox .lb-prev:hover,.lightbox .lb-next:hover{background:rgba(255,255,255,.28)}

/* ---------- 联系我们 ---------- */
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{display:flex;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);align-items:baseline}
.contact-list li b{min-width:84px;color:var(--ink);font-weight:800}
.contact-list li span{color:var(--muted)}

/* ---------- 宣传片 ---------- */
.promo{max-width:1020px;margin:0 auto;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-2);border:1px solid var(--line);background:#000}
.promo video{width:100%;display:block;aspect-ratio:16/9;background:#0a1626}

/* ---------- 卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cfdbe8}
.card .ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(120deg,rgba(18,179,166,.14),rgba(31,122,209,.14));margin-bottom:16px}
.card .ic svg{width:24px;height:24px;stroke:var(--accent);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:19px;font-weight:800;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px;margin:0}

/* ---------- 深浅区块 ---------- */
.dark{background:
  radial-gradient(900px 420px at 85% 0%,rgba(31,122,209,.22),transparent 60%),
  linear-gradient(180deg,#0a1626,#0c1e33);color:#e7eef7}
.dark .muted,.dark .lead{color:#a9bbcf}
.dark .eyebrow{color:#3fd0c0}
.dark .card{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.10);box-shadow:none}
.dark .card:hover{background:rgba(255,255,255,.075);border-color:rgba(255,255,255,.2)}
.dark .card p{color:#a9bbcf}
.dark .card h3{color:#fff}

/* 云平台 · 内网友好 说明块 */
.callout{background:linear-gradient(120deg,rgba(18,179,166,.12),rgba(31,122,209,.12));
  border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);padding:30px 34px}
.callout .eyebrow{color:#3fd0c0}
.callout-title{font-size:clamp(20px,2.4vw,28px);font-weight:900;margin:8px 0 12px;color:#fff;letter-spacing:-.3px}
.callout p{color:#c3d2e2;font-size:15px;margin:0;line-height:1.9}
.callout b{color:#fff}
.topo{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
.topo-node{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.20);color:#eaf1f8;
  border-radius:10px;padding:9px 15px;font-size:13.5px;font-weight:700;white-space:nowrap}
.topo-link{color:#8fb0cf;font-size:13px;white-space:nowrap}

/* ---------- 两栏特性 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.rev .txt{order:2}
.feature-list{list-style:none;padding:0;margin:18px 0 0}
.feature-list li{position:relative;padding-left:30px;margin:12px 0;color:var(--ink-2)}
.dark .feature-list li{color:#c3d2e2}
.feature-list li:before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--grad)}
.img-card{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line);background:#fff}
.dark .img-card{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}
.img-card img{width:100%;display:block}
.img-card .cap2{padding:10px 14px;font-size:13px;color:var(--muted);border-top:1px solid var(--line)}
.dark .img-card .cap2{color:#a9bbcf;border-color:rgba(255,255,255,.1)}

/* mock：皮肤编辑器 */
.mock{background:linear-gradient(135deg,#0e2438,#123a52);padding:20px;border-radius:var(--radius-lg)}
.mock .top{height:12px;display:flex;gap:6px;margin-bottom:14px}
.mock .top i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3)}
.mock .body{display:grid;grid-template-columns:150px 1fr;gap:14px}
.mock .side{border-radius:10px;background:rgba(255,255,255,.06);height:190px;
  background-image:linear-gradient(rgba(255,255,255,.09) 12px,transparent 12px);background-size:100% 34px;background-position:0 14px}
.mock .stage{border-radius:10px;background:rgba(255,255,255,.05);height:190px;position:relative;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:24px 24px}
.mock .blk{position:absolute;border-radius:8px;background:rgba(18,179,166,.5)}
.mock .blk.b1{left:16px;top:16px;width:90px;height:54px}
.mock .blk.b2{right:16px;top:16px;width:120px;height:80px;background:rgba(217,169,76,.5)}
.mock .blk.b3{left:16px;bottom:16px;right:16px;height:36px;background:rgba(31,122,209,.5)}

/* ---------- 功能矩阵 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:26px 0 30px}
.tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 18px;font-weight:700;font-size:14px;cursor:pointer;color:var(--ink-2)}
.tab.on{background:var(--grad);color:#fff;border-color:transparent}
.panel{display:none}
.panel.on{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.fitem{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.fitem b{display:block;font-size:15.5px;margin-bottom:6px}
.fitem span{color:var(--muted);font-size:13.5px}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.tbl th{background:#eef3f8;font-weight:800;color:var(--ink)}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{color:var(--muted)}
.dark .tbl{background:rgba(255,255,255,.03);border-color:rgba(255,255,255,.12)}
.dark .tbl th{background:rgba(255,255,255,.06);color:#fff}
.dark .tbl td,.dark .tbl th{border-color:rgba(255,255,255,.10);color:#cfdbea}

/* ---------- 下载 ---------- */
.dl{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dlcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow)}
.dlcard .tag{font-size:12px;font-weight:800;letter-spacing:1px;color:var(--accent);text-transform:uppercase}
.dlcard h3{font-size:20px;font-weight:800;margin:10px 0 8px}
.dlcard p{color:var(--muted);font-size:14px;margin:0 0 18px}
.dlcard .meta{font-size:12.5px;color:#8a99a9;margin-top:10px}

/* ---------- 表单 ---------- */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label.f{display:block;font-size:13px;font-weight:700;color:var(--ink-2);margin:0 0 6px}
input.f,select.f,textarea.f{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:15px;font-family:inherit;color:var(--ink);background:#fbfcfe}
input.f:focus,select.f:focus,textarea.f:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(18,179,166,.15)}
.field{margin-bottom:14px}
.cap{display:flex;gap:10px;align-items:center}
.cap img{height:44px;border-radius:8px;border:1px solid var(--line);cursor:pointer}
.result{margin-top:16px;padding:14px 16px;border-radius:12px;font-size:14px;display:none}
.result.ok{background:#e8f7f4;border:1px solid #b6e6de;color:#0c6b60;display:block}
.result.err{background:#fdecec;border:1px solid #f3c2c2;color:#a33;display:block}
.license{word-break:break-all;font-family:ui-monospace,Menlo,monospace;font-size:12.5px;background:#0a1626;color:#8fe6da;padding:12px;border-radius:10px;margin-top:10px}

/* ---------- 页脚 ---------- */
footer.site{background:#08121f;color:#93a6ba;padding:54px 0 30px;border-top:1px solid rgba(255,255,255,.06)}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
footer .flogo{height:30px;margin-bottom:14px}
footer h4{color:#fff;font-size:14px;margin:0 0 14px;letter-spacing:.5px}
footer a{display:block;color:#93a6ba;font-size:14px;margin:8px 0}
footer a:hover{color:#fff}
footer .copy{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);font-size:13px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 技术讨论区 ---------- */
.disc-hero{background:
  radial-gradient(900px 420px at 80% -10%,rgba(31,122,209,.28),transparent 60%),
  linear-gradient(180deg,#0a1626,#0c1e33);color:#eaf1f8;padding:56px 0 40px}
.disc-hero .eyebrow{color:#3fd0c0}
.disc-hero .lead{color:#b9c8da}
.disc-h1{font-size:clamp(28px,4vw,46px);font-weight:900;letter-spacing:-.5px;margin:6px 0 12px}
.disc-stats{margin-top:14px;color:#9fb2c8;font-size:14px}
.disc-stats b{color:#fff}

.disc-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.disc-cats{display:flex;gap:8px;flex-wrap:wrap}
.disc-tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-size:13.5px;font-weight:700;color:var(--ink-2);cursor:pointer}
.disc-tab span{color:var(--muted);font-weight:600}
.disc-tab.on{background:var(--grad);color:#fff;border-color:transparent}
.disc-tab.on span{color:rgba(255,255,255,.85)}
.disc-search{display:flex;gap:8px}
.disc-search input.f{width:260px}

.disc-list{display:flex;flex-direction:column;gap:10px}
.disc-item{display:grid;grid-template-columns:1fr auto auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;cursor:pointer;transition:.18s}
.disc-item:hover{border-color:#cfdbe8;box-shadow:var(--shadow);transform:translateY(-1px)}
.disc-item-title{font-weight:700;font-size:16px;color:var(--ink)}
.disc-item-exc{color:var(--muted);font-size:13.5px;margin:5px 0 7px}
.disc-meta{display:flex;gap:12px;font-size:12.5px;color:var(--muted);align-items:center;flex-wrap:wrap}
.disc-chip{background:#eef3f8;color:var(--accent);border-radius:999px;padding:2px 10px;font-weight:700}
.disc-pin{background:var(--grad-gold);color:#3a2a05;border-radius:6px;padding:2px 7px;font-size:12px;font-weight:800}
.disc-item-side{text-align:center;color:var(--muted);font-size:12px;min-width:52px}
.disc-item-side b{display:block;font-size:19px;color:var(--ink);font-weight:800}
.disc-empty{padding:44px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:14px}
.disc-pager{display:flex;gap:6px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.disc-pg{border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 13px;font-size:13.5px;cursor:pointer;color:var(--ink-2)}
.disc-pg.on{background:var(--grad);color:#fff;border-color:transparent}
.disc-gap{align-self:center;color:var(--muted)}

/* 弹层 */
.modal{position:fixed;inset:0;background:rgba(6,14,24,.62);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;z-index:100;padding:24px}
.modal.on{display:flex}
.modal-card{background:#fff;border-radius:18px;width:100%;max-width:760px;max-height:88vh;
  display:flex;flex-direction:column;box-shadow:var(--shadow-2);overflow:hidden}
.modal-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;
  padding:20px 24px;border-bottom:1px solid var(--line)}
.modal-head h3{font-size:20px;font-weight:800}
.modal-x{border:0;background:#f0f3f7;width:34px;height:34px;border-radius:9px;font-size:20px;line-height:1;cursor:pointer;color:#5c6f82}
.modal-body{padding:20px 24px;overflow:auto}
.disc-content{white-space:pre-wrap;color:var(--ink-2);line-height:1.8}
.disc-replies-head{margin:22px 0 12px;font-weight:800;color:var(--ink);border-top:1px solid var(--line);padding-top:16px}
.disc-replies{display:flex;flex-direction:column;gap:10px}
.disc-reply{background:#f6f8fb;border:1px solid var(--line);border-radius:12px;padding:12px 14px;color:var(--ink-2);font-size:14px}
.disc-reply.staff{background:#eef7f5;border-color:#bfe6df}
.disc-reply-h{font-size:12.5px;color:var(--muted);margin-bottom:5px;font-weight:700}
.disc-staff{background:var(--accent);color:#fff;border-radius:6px;padding:1px 7px;font-size:11px;margin-left:6px}
.disc-reply-form{margin-top:18px;border-top:1px solid var(--line);padding-top:18px}

/* ---------- 响应式 ---------- */
@media(max-width:1320px){
  .carousel3d{--iw:260px;--ih:146px;--r:290px;perspective:1400px;height:400px}
}
@media(max-width:1230px){
  header.site .bar{position:relative}
  header.site .logo.brand-co{font-size:17px;white-space:nowrap;max-width:none;overflow:hidden;text-overflow:ellipsis}
  .hd-cta{margin-left:auto}
  .nav-toggle{display:flex}
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;margin:0;flex-direction:column;gap:0;
    background:rgba(10,22,38,.98);border-bottom:1px solid rgba(255,255,255,.12);padding:6px 0;max-height:76vh;overflow:auto;
    box-shadow:0 24px 40px -20px rgba(0,0,0,.6)}
  nav.main.open{display:flex}
  nav.main a{padding:13px 24px;border-bottom:1px solid rgba(255,255,255,.06)}
}
@media(max-width:960px){
  header.site .logo.brand-co{font-size:15px;white-space:nowrap}
  .hero .inner{grid-template-columns:1fr;gap:36px;padding:52px 0 60px}
  .tv{max-width:520px;margin:0 auto}
  .carousel3d{--iw:300px;--ih:169px;--r:330px;perspective:1500px;height:440px}
  .cards,.panel.on,.dl,.shots{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev .txt{order:0}
  .stats{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:660px){
  .hd-cta .ghost{display:none}
  .promo-bar{font-size:12.5px}
  .promo-bar a{display:block;margin:3px 0 0}
  .disc-item{grid-template-columns:1fr;gap:8px}
  .disc-item-side{display:none}
  .disc-search{width:100%}
  .disc-search input.f{width:100%}
  .cards,.panel.on,.dl,.grid2,.shots{grid-template-columns:1fr}
  .phones{grid-template-columns:repeat(3,1fr);max-width:420px}
  .stats{grid-template-columns:1fr 1fr}
  .section{padding:58px 0}
  .rb-banner{padding:28px 18px}
  .carousel3d{--iw:220px;--ih:124px;--r:250px;perspective:1300px;height:340px}
}


/* Rufus / U 盘工具：在白卡片上使用深蓝高对比文字，不要用 ghost 白色 */
.rufus-link{
  color:#0b5cab !important;
  font-weight:800;
  text-decoration:underline;
  text-underline-offset:3px;
}
.rufus-link:hover{color:#084a8c !important}
.btn.rufus-link{
  display:inline-flex;align-items:center;justify-content:center;
  background:#eef6ff;color:#0b5cab;border:1px solid #9fc5ea;
  text-decoration:none;padding:11px 20px;border-radius:12px;
}
.btn.rufus-link:hover{background:#e2efff;color:#084a8c}