/* ==========================================================================
   FUNMOUNT · 站点公共样式（科技感设计系统）
   适用于：首页 / 产品中心 / 产品详情 / 产品手册 / 产品工具 / 联系我们
   ========================================================================== */

/* ============ 1. Design Tokens ============ */
:root{
  --bg:#04070d;
  --bg-2:#070c16;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.065);
  --line:rgba(255,255,255,.085);
  --line-2:rgba(120,190,255,.30);
  --text:#e9f0fa;
  --text-2:#b9c8dc;
  --muted:#8398b3;
  --accent:#3ba9ff;
  --accent-2:#22e0d6;
  --accent-3:#7c6bff;
  --brand:#1a6fb5;
  --radius:18px;
  --radius-sm:12px;
  --max:1220px;
  --nav-h:72px;
  --ease:cubic-bezier(.22,.7,.24,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"Inter","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 26px}
.mono{font-family:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace}
.muted{color:var(--muted)}

/* ============ 2. Ambient Background ============ */
.bg-fx{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.bg-fx .grid{
  position:absolute;inset:-2px;
  background-image:linear-gradient(rgba(120,180,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,180,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 65% at 50% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 65% at 50% 0%,#000 0%,transparent 78%);
}
.bg-fx .glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55}
.bg-fx .g1{width:620px;height:620px;top:-260px;left:-120px;background:radial-gradient(circle,rgba(59,169,255,.42),transparent 68%)}
.bg-fx .g2{width:560px;height:560px;top:-180px;right:-140px;background:radial-gradient(circle,rgba(34,224,214,.24),transparent 68%)}
.bg-fx .g3{width:700px;height:700px;top:1600px;left:50%;transform:translateX(-50%);background:radial-gradient(circle,rgba(124,107,255,.20),transparent 70%)}
.bg-fx .vignette{position:absolute;inset:0;background:radial-gradient(ellipse 120% 80% at 50% 0%,transparent 35%,rgba(4,7,13,.85) 100%)}

/* ============ 3. Scroll progress ============ */
.progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 12px rgba(59,169,255,.8)}

/* ============ 4. Header / Nav ============ */
header{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:120;
  display:flex;align-items:center;
  transition:background .4s var(--ease),backdrop-filter .4s,border-color .4s;
  border-bottom:1px solid transparent;
}
header.solid{background:rgba(5,9,16,.78);backdrop-filter:blur(18px) saturate(140%);border-bottom-color:var(--line)}
.hd{display:flex;align-items:center;gap:28px;width:100%;max-width:var(--max);margin:0 auto;padding:0 26px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo .chip{
  background:linear-gradient(180deg,#ffffff,#e8f1fb);border-radius:11px;padding:7px 11px;
  box-shadow:0 6px 20px rgba(0,0,0,.35),0 0 0 1px rgba(255,255,255,.14);
}
.logo .chip img{height:26px;width:auto}
.logo .txt{display:flex;flex-direction:column;line-height:1.15}
.logo .txt b{font-size:15px;letter-spacing:.16em}
.logo .txt span{font-size:10.5px;color:var(--muted);letter-spacing:.06em}

nav.main{margin-left:auto;display:flex;align-items:center;gap:4px}
nav.main > .item{position:relative}
nav.main > .item > a{
  display:block;padding:9px 15px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:color .25s,background .25s;white-space:nowrap;
}
nav.main > .item > a:hover{color:#fff;background:var(--surface-2)}
nav.main > .item > a.active{color:#fff}
nav.main > .item > a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 10px rgba(59,169,255,.9)
}
.caret{font-size:9px;opacity:.6;margin-left:5px}
.dropdown{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translate(-50%,10px);
  min-width:340px;padding:12px;border-radius:16px;
  background:rgba(9,14,24,.94);backdrop-filter:blur(20px);
  border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.55);
  opacity:0;visibility:hidden;transition:.32s var(--ease);
}
nav.main > .item:hover .dropdown{opacity:1;visibility:visible;transform:translate(-50%,0)}
.dropdown::before{content:"";position:absolute;top:-10px;left:0;right:0;height:12px}
.dd-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.dd-grid a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:.25s
}
.dd-grid a:hover{background:linear-gradient(90deg,rgba(59,169,255,.16),rgba(34,224,214,.06));color:#fff}
.dd-grid a i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent);flex:none}
.dd-note{grid-column:1/-1;margin-top:6px;padding:8px 12px;font-size:12px;color:var(--muted);border-top:1px dashed var(--line)}
.lang{display:flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line);border-radius:999px;background:var(--surface)}
.lang a,.lang span{padding:4px 11px;border-radius:999px;font-size:12.5px;color:var(--muted);transition:.25s}
.lang .on{background:linear-gradient(135deg,rgba(59,169,255,.9),rgba(34,224,214,.75));color:#04121f;font-weight:600}
.lang a:hover{color:#fff}
.cta{
  padding:10px 20px;border-radius:999px;font-size:14px;font-weight:600;color:#04121f;
  background:linear-gradient(135deg,#63c8ff,#22e0d6);box-shadow:0 8px 26px rgba(59,169,255,.32);
  transition:.3s var(--ease);white-space:nowrap
}
.cta:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(59,169,255,.5)}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:17px;height:1.5px;background:var(--text);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--text)}
.burger span::before{top:-5px}.burger span::after{top:5px}

/* ============ 5. Buttons ============ */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  transition:.3s var(--ease);border:1px solid transparent;cursor:pointer
}
.btn.primary{color:#04121f;background:linear-gradient(135deg,#63c8ff,#22e0d6);box-shadow:0 10px 30px rgba(59,169,255,.35)}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(59,169,255,.5)}
.btn.ghost{color:var(--text);border-color:var(--line);background:var(--surface);backdrop-filter:blur(8px)}
.btn.ghost:hover{border-color:var(--line-2);background:var(--surface-2);transform:translateY(-3px)}
.btn.sm{padding:9px 18px;font-size:13.5px}
button.btn{font-family:inherit;line-height:1.4}
.btns{display:flex;gap:14px;flex-wrap:wrap;align-items:center}

/* ============ 6. Hero (homepage) ============ */
.hero{position:relative;padding:calc(var(--nav-h) + 78px) 0 92px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;padding:7px 15px;border-radius:999px;
  border:1px solid var(--line-2);background:rgba(59,169,255,.08);
  font-size:12.5px;letter-spacing:.1em;color:#9fd4ff;text-transform:uppercase
}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 0 rgba(34,224,214,.7);animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,224,214,.6)}70%{box-shadow:0 0 0 10px rgba(34,224,214,0)}100%{box-shadow:0 0 0 0 rgba(34,224,214,0)}}
.hero h1{
  margin:22px 0 0;font-size:clamp(34px,4.4vw,58px);font-weight:800;letter-spacing:-.025em;line-height:1.1;
  background:linear-gradient(104deg,#ffffff 0%,#d6ebff 38%,#3ba9ff 78%,#22e0d6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero .lede{margin-top:22px;font-size:16.5px;color:var(--text-2);max-width:60ch}
.hero .lede em{font-style:normal;color:#bfe3ff}
.hero .btns{margin-top:34px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:46px;
  border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  backdrop-filter:blur(10px);overflow:hidden}
.stat{padding:20px 18px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(120deg,#eaf4ff,#6fc4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--muted)}

.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:460px}
.ring{position:absolute;border-radius:50%;border:1px solid rgba(120,190,255,.22)}
.ring.r1{width:430px;height:430px;animation:spin 26s linear infinite}
.ring.r2{width:340px;height:340px;border-style:dashed;border-color:rgba(34,224,214,.24);animation:spin 18s linear infinite reverse}
.ring.r3{width:250px;height:250px;border-color:rgba(124,107,255,.25)}
.ring.r1::after{content:"";position:absolute;top:-4px;left:50%;width:8px;height:8px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 16px 4px rgba(59,169,255,.9)}
.ring.r2::after{content:"";position:absolute;bottom:-4px;left:50%;width:7px;height:7px;border-radius:50%;
  background:var(--accent-2);box-shadow:0 0 14px 3px rgba(34,224,214,.8)}
@keyframes spin{to{transform:rotate(360deg)}}
.product-hero{
  position:relative;z-index:2;width:300px;height:300px;border-radius:50%;overflow:hidden;
  box-shadow:0 30px 80px rgba(0,0,0,.65),0 0 0 1px rgba(255,255,255,.09),0 0 90px rgba(59,169,255,.22);
  background:#080c13
}
.product-hero img{position:absolute;left:-26%;top:-70%;width:152%;height:auto;max-width:none}
.product-hero::after{content:"";position:absolute;inset:0;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at 50% 42%,transparent 42%,rgba(4,7,13,.55) 78%,rgba(4,7,13,.92) 100%)}
.scan{position:absolute;inset:0;z-index:3;pointer-events:none;border-radius:50%;overflow:hidden}
.scan::before{content:"";position:absolute;left:-40%;top:-60%;width:60%;height:220%;
  background:linear-gradient(90deg,transparent,rgba(160,220,255,.30),transparent);transform:rotate(18deg);animation:sweep 5.5s ease-in-out infinite}
@keyframes sweep{0%{left:-50%;opacity:0}35%{opacity:1}100%{left:110%;opacity:0}}
.badge-float{
  position:absolute;z-index:4;padding:8px 14px;border-radius:12px;font-size:12.5px;color:var(--text-2);
  background:rgba(9,14,24,.85);border:1px solid var(--line);backdrop-filter:blur(12px);
  box-shadow:0 12px 34px rgba(0,0,0,.45);white-space:nowrap
}
.badge-float b{color:#9fd4ff;font-weight:600}
.bf1{top:14%;left:-6%;animation:float 6s ease-in-out infinite}
.bf2{bottom:16%;right:-4%;animation:float 7.5s ease-in-out infinite .8s}
.bf3{bottom:4%;left:6%;animation:float 8s ease-in-out infinite 1.6s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}

/* ============ 7. Sections ============ */
section{position:relative;padding:96px 0}
.sec-head{max-width:760px;margin-bottom:52px}
.sec-tag{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:#7fc4ff;font-weight:600
}
.sec-tag::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}
.sec-head h2{margin-top:14px;font-size:clamp(26px,3.1vw,40px);font-weight:800;letter-spacing:-.02em}
.sec-head p{margin-top:16px;color:var(--muted);font-size:15.5px}
.sec-head.center{max-width:820px;margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .sec-tag{justify-content:center}
.sec-head.center .sec-tag::before{display:none}

/* ============ 8. Breadcrumb + Page hero ============ */
.crumb{padding:calc(var(--nav-h) + 34px) 0 0;font-size:13px;color:var(--muted)}
.crumb a:hover{color:#fff}
.crumb i{font-style:normal;opacity:.5;margin:0 9px}
.page-hero{position:relative;padding:30px 0 8px;overflow:hidden}
.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.page-hero h1{
  margin:18px 0 0;font-size:clamp(30px,3.8vw,50px);font-weight:800;letter-spacing:-.025em;line-height:1.12;
  background:linear-gradient(104deg,#ffffff 0%,#d6ebff 40%,#3ba9ff 80%,#22e0d6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.page-hero .lede{margin-top:20px;font-size:16px;color:var(--text-2);max-width:62ch}
.page-hero .btns{margin-top:30px}
.poster{
  position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:0 30px 80px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.03)
}
.poster img{width:100%;aspect-ratio:4/3.2;object-fit:cover;object-position:center 55%}
.poster.tall img{aspect-ratio:4/4.6;object-position:center 62%}
.poster-glow::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(4,7,13,.7) 100%)
}
.poster.contain{background:#05080f;padding:10px}
.poster.contain img{object-fit:contain;object-position:center;aspect-ratio:auto;height:auto;width:100%}
.crumb i{font-style:normal;opacity:.45;margin:0 9px}

/* key-value chips */
.kv{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:28px}

/* ============ 9. Product cards ============ */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cards.c4{grid-template-columns:repeat(4,1fr);gap:18px}
.cards.c4 .card h3{font-size:16.4px}
.cards.c4 .card .body{padding:20px 20px 22px}
.cards.c4 .chip-s{font-size:11.4px;padding:4px 9px}
.card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);transition:.45s var(--ease)
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;pointer-events:none;
  background:linear-gradient(140deg,rgba(59,169,255,.75),rgba(34,224,214,.25) 45%,transparent 70%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:.45s
}
.card:hover{transform:translateY(-8px);box-shadow:0 30px 70px rgba(0,0,0,.55)}
.card:hover::after{opacity:1}
.card .thumb{position:relative;aspect-ratio:4/3.4;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;object-position:center 74%;transition:transform .7s var(--ease)}
.card:hover .thumb img{transform:scale(1.06)}
.card .thumb::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 26%,rgba(4,7,13,.72) 60%,rgba(4,7,13,.97) 100%)}
.card .body{padding:20px 22px 24px;position:relative;z-index:2;margin-top:-52px}
.card h3{font-size:19px;display:flex;align-items:center;gap:10px}
.card h3 .dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 0 12px rgba(59,169,255,.8)}
.card .sub{margin-top:6px;font-size:13px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.chip-s{
  padding:4px 11px;border-radius:999px;font-size:11.5px;color:#a9cbe8;
  border:1px solid var(--line);background:rgba(255,255,255,.03)
}
.card .go{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:14px;font-weight:600;color:#8fd0ff}
.card .go i{transition:transform .3s var(--ease);font-style:normal}
/* 等高对齐：正文撑满，详情链接贴底 */
.card{display:flex;flex-direction:column}
.card .thumb{flex:none}
.card .body{flex:1;display:flex;flex-direction:column}
.card .go{margin-top:auto;padding-top:18px}
.card:hover .go i{transform:translateX(5px)}

.mini-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.mini{
  display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:14px;font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:var(--surface);transition:.3s var(--ease)
}
.mini:hover{border-color:var(--line-2);background:var(--surface-2);color:#fff;transform:translateY(-3px)}
.mini b{font-size:14.5px;color:#bfe3ff;font-weight:600}

/* ============ 10. Split blocks ============ */
.block{display:grid;grid-template-columns:.95fr 1.05fr;gap:52px;align-items:center;padding:80px 0;border-top:1px solid var(--line)}
.block.rev .txt{order:2}
.block h2{margin:18px 0 0;font-size:clamp(25px,2.9vw,38px);font-weight:800;letter-spacing:-.02em}
.block .desc{margin-top:20px;color:var(--text-2);font-size:15.5px}
.block .feats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}
.feat{
  padding:16px 18px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));transition:.35s var(--ease)
}
.feat:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,0,0,.4)}
.feat b{display:block;font-size:14.5px;margin-bottom:4px}
.feat span{font-size:12.8px;color:var(--muted)}
.frame{
  position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#060a12;box-shadow:0 30px 80px rgba(0,0,0,.55)
}
.frame img{width:100%;aspect-ratio:16/12.6;object-fit:cover;opacity:.96}
.frame.shot{position:relative;padding:16px;background:#080d16}
.frame.shot img{aspect-ratio:auto;object-fit:contain;max-height:430px;border-radius:10px;border:1px solid var(--line);background:#0a1019}
.frame.shot .shot-cap{position:absolute;right:20px;bottom:18px;font-size:11.5px;color:var(--muted);
  padding:3px 10px;border-radius:999px;background:rgba(4,7,13,.72);border:1px solid var(--line)}

/* ============ 11. Tabs / spec list ============ */
.tabs{display:flex;gap:8px;margin:34px 0 26px;flex-wrap:wrap}
.tab{
  padding:10px 20px;border-radius:999px;font-size:14px;cursor:pointer;color:var(--text-2);
  border:1px solid var(--line);background:var(--surface);transition:.3s var(--ease);user-select:none
}
.tab:hover{color:#fff;border-color:var(--line-2)}
.tab.on{color:#04121f;font-weight:700;border-color:transparent;background:linear-gradient(135deg,#63c8ff,#22e0d6);box-shadow:0 8px 24px rgba(59,169,255,.32)}
.panel{display:none;grid-template-columns:1fr 1fr;gap:14px}
.panel.on{display:grid;animation:fadeUp .55s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.spec{
  display:flex;gap:16px;padding:18px 20px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));transition:.35s var(--ease)
}
.spec:hover{border-color:var(--line-2);background:linear-gradient(180deg,rgba(59,169,255,.10),rgba(255,255,255,.02));transform:translateX(4px)}
.spec .no{
  flex:none;font-size:13px;font-weight:700;letter-spacing:.04em;color:#7fc4ff;
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);background:rgba(59,169,255,.10)
}
.spec p{font-size:14.4px;color:var(--text-2)}

/* ============ 12. Videos ============ */
.videos{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:40px}
.vcard{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#060a12;transition:.4s var(--ease);cursor:pointer}
.vcard:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.vcard .vposter{position:relative;aspect-ratio:16/9;overflow:hidden}
.vcard .vposter img{width:100%;height:100%;object-fit:cover;filter:saturate(.95) brightness(.72);transition:.6s var(--ease)}
.vcard:hover .vposter img{transform:scale(1.05);filter:saturate(1) brightness(.8)}
.vcard .play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 50% 50%,rgba(4,7,13,.25),rgba(4,7,13,.72))
}
.play i{
  width:66px;height:66px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(99,200,255,.95),rgba(34,224,214,.9));color:#04121f;font-size:22px;
  box-shadow:0 12px 40px rgba(59,169,255,.5);transition:.35s var(--ease);font-style:normal;padding-left:4px
}
.vcard:hover .play i{transform:scale(1.12)}
.vcard .vmeta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px}
.vcard .vmeta b{font-size:14.5px}
.vcard .vmeta span{font-size:12px;color:var(--muted)}
.vcard iframe{width:100%;aspect-ratio:16/9;border:0;display:block}

/* ============ 13. Notice / band ============ */
.notice{
  position:relative;border-radius:var(--radius);padding:34px 38px;overflow:hidden;
  border:1px solid var(--line-2);
  background:linear-gradient(120deg,rgba(59,169,255,.14),rgba(34,224,214,.06) 45%,rgba(124,107,255,.12));
}
.notice::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:100% 34px;opacity:.5}
.notice .inner{position:relative;display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.notice .tag{
  flex:none;padding:6px 14px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:#04121f;background:linear-gradient(135deg,#63c8ff,#22e0d6)
}
.notice h3{font-size:20px}
.notice p{margin-top:8px;color:var(--text-2);font-size:14.5px;max-width:78ch}
.notice .btn{margin-left:auto}

/* ============ 14. Contact ============ */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cbox{
  padding:26px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));transition:.4s var(--ease)
}
.cbox:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 24px 60px rgba(0,0,0,.45)}
.cbox h3{font-size:15px;color:#bfe3ff;letter-spacing:.04em}
.cbox p{margin-top:10px;font-size:14px;color:var(--text-2);word-break:break-all}
.cbox a.mail{font-size:15px;color:#8fd0ff;display:inline-block;margin-top:6px;border-bottom:1px dashed rgba(143,208,255,.4)}
.qr{margin-top:16px;width:132px;border-radius:12px;border:6px solid #fff;box-shadow:0 12px 32px rgba(0,0,0,.5)}
.fb{display:flex;align-items:center;gap:12px;margin-top:16px}
.fb img{width:46px;height:46px;border-radius:12px;object-fit:cover;border:1px solid var(--line)}
.fb span{font-size:14px;color:var(--text-2)}

/* ============ 15. Downloads ============ */
.dl-list{display:grid;gap:12px}
.dl-item{
  display:flex;align-items:center;gap:18px;padding:18px 22px;border-radius:16px;
  border:1px solid var(--line);background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  transition:.35s var(--ease)
}
.dl-item:hover{border-color:var(--line-2);background:linear-gradient(90deg,rgba(59,169,255,.10),rgba(255,255,255,.02));transform:translateX(4px)}
.f-ico{
  flex:none;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);background:rgba(59,169,255,.10);color:#7fc4ff;font-size:11px;font-weight:700;letter-spacing:.04em
}
.dl-info{flex:1;min-width:0}
.dl-info b{display:block;font-size:14.6px;word-break:break-all}
.dl-info span{font-size:12.5px;color:var(--muted)}
.dl-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:20px;font-size:13px;color:var(--muted)}

/* ============ 16. Steps ============ */
.steps{display:grid;gap:14px;counter-reset:st}
.step{
  position:relative;display:flex;gap:18px;padding:20px 24px;border-radius:16px;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  transition:.35s var(--ease)
}
.step:hover{border-color:var(--line-2);transform:translateY(-3px)}
.step .num{
  flex:none;width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;color:#04121f;background:linear-gradient(135deg,#63c8ff,#22e0d6);
  box-shadow:0 6px 18px rgba(59,169,255,.28)
}
.step p{font-size:14.6px;color:var(--text-2)}
.step p em{font-style:normal;color:#a9d8ff}

/* ============ 17. Changelog timeline ============ */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--accent),rgba(34,224,214,.35) 45%,transparent)}
.tl-item{position:relative;padding:0 0 26px}
.tl-item::before{content:"";position:absolute;left:-30px;top:8px;width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:2px solid var(--accent);box-shadow:0 0 14px rgba(59,169,255,.55)}
.tl-item:first-child::before{background:linear-gradient(135deg,#63c8ff,#22e0d6);border-color:transparent}
.tl-card{
  padding:20px 24px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));transition:.35s var(--ease)
}
.tl-card:hover{border-color:var(--line-2);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.tl-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.tl-ver{
  font-size:15px;font-weight:800;letter-spacing:.02em;padding:4px 14px;border-radius:999px;
  color:#04121f;background:linear-gradient(135deg,#63c8ff,#22e0d6)
}
.tl-date{font-size:12.5px;color:var(--muted)}
.tl-card ul{margin-top:14px;display:grid;gap:8px}
.tl-card li{position:relative;padding-left:18px;font-size:14.3px;color:var(--text-2)}
.tl-card li::before{content:"";position:absolute;left:2px;top:11px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.tl-note{margin-top:12px;padding:12px 16px;border-radius:12px;font-size:13.4px;color:#a9cbe8;
  border:1px dashed var(--line-2);background:rgba(59,169,255,.06)}
.tl-more{margin-top:6px}
.tl-more > summary{
  list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:999px;font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:var(--surface);transition:.3s var(--ease)
}
.tl-more > summary::-webkit-details-marker{display:none}
.tl-more > summary:hover{border-color:var(--line-2);color:#fff;background:var(--surface-2)}
.tl-more > summary i{font-style:normal;transition:transform .3s var(--ease)}
.tl-more[open] > summary i{transform:rotate(180deg)}
.tl-more[open] > summary{margin-bottom:22px}

/* ============ 18. Gallery + lightbox ============ */
.gallery{columns:3;column-gap:18px}
.g-item{break-inside:avoid;margin-bottom:18px;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  cursor:zoom-in;position:relative;transition:.4s var(--ease);background:#060a12}
.g-item:hover{border-color:var(--line-2);box-shadow:0 24px 60px rgba(0,0,0,.55);transform:translateY(-4px)}
.g-item img{width:100%;display:block}
.g-item .g-cap{
  position:absolute;left:0;right:0;bottom:0;padding:22px 16px 12px;font-size:12.5px;color:#cfe4f7;
  background:linear-gradient(180deg,transparent,rgba(4,7,13,.9));opacity:0;transition:.35s
}
.g-item:hover .g-cap{opacity:1}
.lightbox{
  position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;
  background:rgba(2,4,8,.94);backdrop-filter:blur(10px);padding:34px
}
.lightbox.open{display:flex}
.lightbox img{max-width:100%;max-height:86vh;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.8)}
.lb-close{position:absolute;top:26px;right:30px;width:44px;height:44px;border-radius:50%;cursor:pointer;
  border:1px solid var(--line-2);background:rgba(255,255,255,.06);color:#fff;font-size:20px;
  display:flex;align-items:center;justify-content:center}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;cursor:pointer;
  border:1px solid var(--line-2);background:rgba(255,255,255,.06);color:#fff;font-size:18px;
  display:flex;align-items:center;justify-content:center}
.lb-prev{left:28px}.lb-next{right:28px}
.lb-count{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);font-size:13px;color:var(--muted)}

/* ============ 19. Manual / tool cards ============ */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tool-card{
  position:relative;padding:30px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
  transition:.4s var(--ease)
}
.tool-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.tool-card h3{font-size:19px}
.tool-card p{margin-top:12px;font-size:14.4px;color:var(--text-2)}
.tool-card .ico{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);background:rgba(59,169,255,.10);color:#7fc4ff;font-size:20px;margin-bottom:18px
}
.manual-card{
  display:flex;flex-direction:column;gap:16px;padding:26px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  transition:.4s var(--ease)
}
.manual-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 24px 60px rgba(0,0,0,.45)}
.manual-card b{font-size:16px}
.manual-card span{font-size:13px;color:var(--muted)}
.manual-card .btn{margin-top:auto;align-self:flex-start}
.anchor-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}

/* ============ 20. Footer ============ */
footer{margin-top:40px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(8,18,30,.6),rgba(4,7,13,1))}
.ft{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr 1fr;gap:36px;padding:56px 0 34px}
.ft h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#7fc4ff;margin-bottom:16px}
.ft li{margin-bottom:9px}
.ft a,.ft p{font-size:13.8px;color:var(--muted);transition:.25s}
.ft a:hover{color:#fff}
.ft .brandcol p{margin-top:14px;max-width:34ch;font-size:13.5px;line-height:1.8}
.ft .brandcol .chip{background:linear-gradient(180deg,#fff,#e8f1fb);border-radius:11px;padding:7px 11px;display:inline-block}
.ft .brandcol .chip img{height:24px}
.copy{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 0 30px;border-top:1px solid var(--line);
  font-size:12.5px;color:#6b7f96}

/* ============ 21. Reveal ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* ============ 22. Reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1!important;transform:none!important;transition:none!important}
  .ring,.scan::before,.badge-float,.pulse{animation:none!important}
  .card:hover,.btn:hover,.mini:hover,.spec:hover,.cbox:hover,.vcard:hover,.dl-item:hover,.step:hover,.tool-card:hover,.manual-card:hover,.g-item:hover,.tl-card:hover,.ff-card:hover,.field:hover,.cap:hover{transform:none!important}
}

/* ============ 23. 参数表 / 优势卡 / 对比表 / 电量条 ============ */
.spec-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:start}
.spec-table{
  width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012))
}
.spec-table tr{border-bottom:1px solid var(--line)}
.spec-table tr:last-child{border-bottom:0}
.spec-table tr:hover{background:rgba(59,169,255,.055)}
.spec-table th{
  text-align:left;font-weight:500;font-size:13.6px;color:var(--muted);white-space:nowrap;
  padding:15px 22px;width:34%;letter-spacing:.02em
}
.spec-table td{padding:15px 22px;font-size:14.6px;color:var(--text-1);font-weight:500}
.spec-side{display:flex;flex-direction:column;gap:16px}
.spec-note{
  padding:22px 24px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(59,169,255,.10),rgba(59,169,255,.02))
}
.spec-note b{display:block;font-size:14.4px;color:#9fd6ff;margin-bottom:10px;letter-spacing:.02em}
.spec-note span{font-size:13.6px;color:var(--text-2);line-height:1.85}

.ff-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ff-card{
  position:relative;padding:28px 26px 26px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  transition:.45s var(--ease)
}
.ff-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px 180px at 12% -10%,rgba(34,224,214,.14),transparent 70%);
  opacity:0;transition:.45s var(--ease)
}
.ff-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.ff-card:hover::after{opacity:1}
.ff-no{
  display:block;font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;
  color:#5fd8ff;margin-bottom:14px
}
.ff-card h3{font-size:16.6px;line-height:1.45}
.ff-card p{margin-top:11px;font-size:13.8px;color:var(--text-2);line-height:1.85}

.cmp-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012))}
.cmp-table{width:100%;border-collapse:collapse}
.cmp-table th,.cmp-table td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:14.2px}
.cmp-table thead th{
  font-size:12.6px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);font-weight:600;
  background:rgba(255,255,255,.03)
}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody th{font-weight:500;color:var(--muted);font-size:13.6px;white-space:nowrap;width:18%}
.cmp-table td{color:var(--text-2)}
.cmp-table .win{
  color:#eaf5ff;font-weight:600;background:linear-gradient(90deg,rgba(59,169,255,.14),rgba(34,224,214,.05));
  border-left:2px solid #3ba9ff
}
.cmp-table thead .win{color:#9fd6ff}

.bars{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.bar{display:flex;flex-direction:column;gap:8px}
.bar span{
  height:9px;border-radius:6px;background:rgba(255,255,255,.09);position:relative;overflow:hidden
}
.bar span::after{
  content:"";position:absolute;inset:0;width:var(--w);border-radius:6px;
  background:linear-gradient(90deg,#3ba9ff,#22e0d6)
}
.bar b{font-family:var(--mono);font-size:14px;color:#cfe8ff}
.bar i{font-style:normal;font-size:12.6px;color:var(--muted)}

.care-list{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.care-list li{position:relative;padding-left:18px;font-size:13.8px;color:var(--text-2);line-height:1.85}
.care-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:linear-gradient(135deg,#3ba9ff,#22e0d6)
}

hr.thin{border:0;border-top:1px solid var(--line);margin:22px 0}

/* 新品角标 */
.card[data-new]::before{
  content:"NEW";position:absolute;top:14px;left:14px;z-index:3;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;padding:5px 10px;border-radius:8px;
  color:#04121c;background:linear-gradient(135deg,#22e0d6,#3ba9ff);font-weight:700
}
.manual-card.d-new{border-color:rgba(34,224,214,.42);
  background:linear-gradient(180deg,rgba(34,224,214,.10),rgba(255,255,255,.012))}
.manual-card.d-new b::after{
  content:"NEW";margin-left:9px;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;
  padding:3px 7px;border-radius:6px;color:#04121c;background:linear-gradient(135deg,#22e0d6,#3ba9ff)
}

/* ============ 23.5 产品定制服务（B 端） ============ */
nav.main > .item > a[data-biz]{color:#9fd6ff}
nav.main > .item > a[data-biz]::after{
  content:"B2B";margin-left:7px;padding:2px 5px;border-radius:5px;
  font-family:var(--mono);font-size:9.5px;font-weight:700;letter-spacing:.1em;
  color:#04121c;background:linear-gradient(135deg,#22e0d6,#3ba9ff);vertical-align:2px
}

.schematic{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));padding:18px 18px 12px}
.schematic svg{width:100%;height:auto;display:block}
.schematic .cap{
  display:block;margin-top:10px;text-align:center;font-size:12.4px;color:var(--muted);letter-spacing:.03em
}

.hot-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.hot-note{margin-top:14px;font-size:13.6px;color:var(--text-2);line-height:1.8}
.hot-note em{font-style:normal;color:#8fd0ff;font-weight:600}

.field-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.field{
  position:relative;padding:26px 24px 24px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));transition:.45s var(--ease)
}
.field:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.field h3{font-size:17px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.field p{margin-top:11px;font-size:13.8px;color:var(--text-2);line-height:1.85}
.field .hot{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;font-weight:700;padding:3px 8px;border-radius:6px;
  color:#04121c;background:linear-gradient(135deg,#22e0d6,#3ba9ff)
}

.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cap{
  padding:26px 24px 24px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));transition:.45s var(--ease)
}
.cap:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.cap h3{font-size:15.4px;color:#9fd6ff;letter-spacing:.02em}
.cap .care-list{margin-top:14px}

.faq-wrap{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));overflow:hidden
}
.faq summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-size:15px;font-weight:600;color:var(--text);
  display:flex;align-items:center;gap:14px
}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{margin-left:auto;color:#8fd0ff;font-style:normal;transition:.3s var(--ease)}
.faq[open] summary i{transform:rotate(180deg)}
.faq p{padding:0 22px 20px;font-size:14.2px;color:var(--text-2);line-height:1.9}

.rfq{
  max-width:920px;padding:30px 28px 26px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015))
}
.rfq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.rfq-field{display:flex;flex-direction:column;gap:8px}
.rfq-field label{font-size:13.2px;color:var(--muted);letter-spacing:.02em}
.rfq-field input,.rfq-field textarea{
  width:100%;padding:12px 14px;border-radius:11px;font:inherit;font-size:14.2px;color:var(--text);
  border:1px solid var(--line);background:rgba(6,10,18,.6);transition:.25s var(--ease);resize:vertical
}
.rfq-field input::placeholder,.rfq-field textarea::placeholder{color:#5f738c}
.rfq-field input:focus,.rfq-field textarea:focus{
  outline:none;border-color:var(--line-2);box-shadow:0 0 0 3px rgba(59,169,255,.14)
}
.rfq-g{margin-top:22px}
.rfq-gt{display:block;font-size:13.2px;color:#9fd6ff;margin-bottom:10px;letter-spacing:.02em}
.rfq-opts{display:flex;flex-wrap:wrap;gap:9px}
.rfq .opt{display:inline-flex;align-items:center;gap:8px;cursor:pointer}
.rfq .opt input{
  width:16px;height:16px;accent-color:#3ba9ff;cursor:pointer;margin:0;flex:none
}
.rfq .opt span{
  padding:7px 13px;border-radius:999px;font-size:13.2px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);transition:.25s var(--ease)
}
.rfq .opt:hover span{border-color:var(--line-2);color:#fff}
.rfq .opt input:checked + span{
  color:#eaf5ff;border-color:rgba(59,169,255,.5);background:rgba(59,169,255,.16)
}
.rfq-wide{margin-top:22px}
.rfq-foot{margin-top:26px}
.rfq-tip{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.85}
.rfq-tip b{color:#8fd0ff;font-weight:600}

/* ============ 24. Responsive ============ */
@media(max-width:1080px){
  .hero-grid,.page-hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{min-height:380px;order:-1}
  .page-hero-grid .poster{order:-1}
  .bf1{left:0}
  .bf2{right:0}
  .cards{grid-template-columns:1fr 1fr}
  .cards.c4{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
  .ft{grid-template-columns:repeat(3,1fr)}
  .gallery{columns:2}
  .grid-4,.grid-3{grid-template-columns:1fr 1fr}
  .ff-grid,.cap-grid,.field-grid{grid-template-columns:1fr 1fr}
  .rfq-grid{grid-template-columns:1fr}
  .spec-wrap{grid-template-columns:1fr}
}
@media(max-width:860px){
  nav.main,.lang.desktop{display:none}
  .burger{display:flex}
  .block{grid-template-columns:1fr;gap:32px;padding:60px 0}
  .block.rev .txt{order:0}
  .panel{grid-template-columns:1fr}
  .videos,.grid-2{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .hero{padding-top:calc(var(--nav-h) + 44px)}
  section{padding:66px 0}
  .notice{padding:26px}
  .notice .btn{margin-left:0}
  .kv{grid-template-columns:1fr}
  .dl-item{flex-wrap:wrap}
}
@media(max-width:620px){
  .wrap,.hd{padding:0 18px}
  .cards,.contact-grid,.ft,.grid-4,.grid-3,.ff-grid,.cap-grid,.field-grid,.cards.c4{grid-template-columns:1fr}
  .block .feats{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .page-hero h1{font-size:30px}
  .product-hero{width:236px;height:236px}
  .ring.r1{width:330px;height:330px}.ring.r2{width:262px;height:262px}.ring.r3{width:196px;height:196px}
  .badge-float{display:none}
  .gallery{columns:1}
  .timeline{padding-left:24px}
  .spec-table th,.spec-table td{padding:12px 16px}
  .spec-table th{width:40%;font-size:12.8px}
  .spec-table td{font-size:13.6px}
  .cmp-table th,.cmp-table td{padding:12px 14px;font-size:13.2px}
  .cmp-table tbody th{width:auto}
  .bars{grid-template-columns:1fr 1fr}
  .cmp-wrap{overflow-x:auto}
  .cmp-table{min-width:540px}
}

/* ============ 24. Mobile drawer ============ */
.drawer{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:110;padding:18px 22px 26px;
  background:rgba(6,10,18,.97);backdrop-filter:blur(20px);border-bottom:1px solid var(--line);
  transform:translateY(-12px);opacity:0;visibility:hidden;transition:.3s var(--ease);max-height:78vh;overflow:auto
}
.drawer.open{transform:none;opacity:1;visibility:visible}
.drawer a{display:block;padding:12px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.05)}
.drawer a.sub{padding-left:18px;font-size:13.5px;color:var(--muted)}
.drawer a.langx{
  margin-top:14px;border:1px solid var(--line-2);border-radius:11px;text-align:center;
  color:#9fd6ff;font-size:13.5px;font-weight:600;padding:11px 4px;background:rgba(59,169,255,.08)
}