/* ============================================================
   Dongguan Beluga Sports Goods Co., Ltd.  —  site stylesheet
   深海军蓝 + 青色高光；技术感；移动端优先。
   v2（2026-09-23）：整体精致化 + 克制动效。
   动效原则：只用 transform / opacity（GPU 友好）；
             全部包在 prefers-reduced-motion 白名单里。
   ============================================================ */

:root{
  /* 色板：比 v1 更深、更冷，浅色区不用纯白，减少"廉价感" */
  --navy-950:#03080f;
  --navy-900:#050d18;
  --navy-800:#08172a;
  --navy-700:#0c2036;
  --navy-600:#123049;
  --navy-500:#1a4066;
  --ink:#0a1626;
  --cyan-400:#22d3ee;
  --cyan-500:#06b6d4;
  --cyan-600:#0891b2;
  --teal:#0ea5a4;
  --paper:#ffffff;
  --paper-soft:#fbfdfe;
  --sand:#f1f6fa;
  --line:#1d3a55;
  --line-soft:rgba(10,22,38,.09);
  --hair-inv:rgba(255,255,255,.11);
  --txt:#0f1b2a;
  --txt-soft:#57697c;
  --txt-inv:#eaf2fa;
  --txt-inv-soft:#9fb4c8;
  --maxw:1240px;
  --radius:16px;
  --radius-lg:22px;
  /* 层次化阴影：一层贴边、一层扩散，比单一阴影"贵" */
  --shadow:0 2px 6px -2px rgba(5,13,24,.10), 0 22px 56px -26px rgba(5,13,24,.55);
  --shadow-lg:0 4px 10px -4px rgba(5,13,24,.14), 0 40px 90px -40px rgba(5,13,24,.6);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Inter","Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--txt);
  font-family:var(--font);font-size:16px;line-height:1.68;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"kern" 1,"liga" 1;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.14;font-weight:700;letter-spacing:-.022em}
p{margin:0 0 1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.center{text-align:center}

/* ---------- 顶部阅读进度条（JS 注入 .progress） ---------- */
.progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:80;
  background:linear-gradient(90deg,var(--cyan-500),var(--cyan-400),var(--teal));
  box-shadow:0 0 14px rgba(34,211,238,.7);
  transform-origin:0 50%;transition:width .12s linear;
  pointer-events:none;
}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:rgba(5,13,24,.78);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--hair-inv);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.nav-in{
  max-width:var(--maxw);margin:0 auto;padding:0 26px;height:80px;
  display:flex;align-items:center;gap:26px;
  transition:height .3s var(--ease);
}
/* 滚动后收紧 + 加深，做出"沉下去"的层次 */
.nav.scrolled{background:rgba(3,8,15,.92);border-bottom-color:rgba(34,211,238,.18);box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.nav.scrolled .nav-in{height:66px}
/* ---------- 品牌区（徽章 + 竖线 + 两行字标） ----------
   原 logo 的 "BELUGA" 是变形字，小尺寸糊成一团；所以：
   徽标装进带描边的方形徽章（有框才有分量），字标另外用干净字体排。 */
.brand{display:flex;align-items:center;gap:14px;color:#fff;font-weight:800;flex:0 0 auto}
.brand-mark{
  position:relative;flex:0 0 auto;
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(34,211,238,.20),rgba(34,211,238,.04) 55%,rgba(255,255,255,.03));
  border:1px solid rgba(34,211,238,.34);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18), 0 10px 26px -16px rgba(6,182,212,.95);
  transition:width .3s var(--ease),height .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-1px);border-color:rgba(34,211,238,.6)}
.brand-mark img{width:38px;height:38px;object-fit:contain;transition:width .3s var(--ease),height .3s var(--ease)}
.brand-txt{display:flex;flex-direction:column;justify-content:center;line-height:1;padding-left:14px;border-left:1px solid rgba(255,255,255,.16)}
.brand-txt b{
  font-size:19px;font-weight:800;letter-spacing:.17em;color:#fff;
  line-height:1;display:block;
}
.brand-txt i{
  font-style:normal;display:block;margin-top:5px;
  font-size:9px;font-weight:600;letter-spacing:.19em;text-transform:uppercase;
  color:var(--cyan-400);opacity:.9;white-space:nowrap;
}
.nav.scrolled .brand-mark{width:44px;height:44px;border-radius:13px}
.nav.scrolled .brand-mark img{width:32px;height:32px}
.nav.scrolled .brand-txt b{font-size:17px}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;color:var(--txt-inv-soft);font-size:14.5px;font-weight:500;
  padding:9px 14px;border-radius:10px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(34,211,238,.09)}
.nav-links a.active{color:#fff;background:rgba(34,211,238,.14)}
/* 当前项底部一条发光细线 */
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:1.5px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--cyan-400),transparent);
}
/* ---------- 语言切换 ---------- */
.lang{
  display:inline-flex;align-items:center;gap:2px;margin-left:12px;
  border:1px solid rgba(34,211,238,.26);border-radius:999px;padding:3px;
  flex:0 0 auto;white-space:nowrap;background:rgba(255,255,255,.03);
}
.lang .cur{
  color:#04202b;font-weight:800;font-size:13px;padding:5px 12px;border-radius:999px;
  background:linear-gradient(135deg,var(--cyan-500),var(--teal));white-space:nowrap;
  box-shadow:0 6px 16px -8px rgba(6,182,212,.9);
}
.lang a{color:var(--txt-inv-soft);font-size:13px;padding:5px 12px;border-radius:999px;white-space:nowrap;transition:.2s var(--ease)}
.lang a:hover{color:#fff;background:rgba(34,211,238,.14)}
.nav-cta{
  margin-left:12px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--cyan-500),var(--teal));
  color:#04202b !important;font-weight:700 !important;padding:11px 20px !important;
  border-radius:11px;box-shadow:0 12px 30px -14px rgba(6,182,212,.95);
}
.nav-cta:hover{filter:brightness(1.07);background:linear-gradient(135deg,var(--cyan-500),var(--teal)) !important}
.nav-cta::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);
  transform:skewX(-18deg);transition:left .6s var(--ease);
}
.nav-cta:hover::after{left:130%}
.burger{display:none;margin-left:auto;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;border-radius:2px;transition:.25s var(--ease)}

/* ---------- 英雄区 ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(180deg,var(--navy-900),var(--navy-800) 58%,var(--navy-900));
  padding:112px 0 120px;
}
/* 缓慢流动的极光：只动 transform，GPU 友好 */
.hero::before{
  content:"";position:absolute;inset:-25% -10%;pointer-events:none;
  background:
    radial-gradient(46% 42% at 74% 22%, rgba(6,182,212,.34), transparent 62%),
    radial-gradient(38% 38% at 14% 82%, rgba(14,165,164,.28), transparent 64%),
    radial-gradient(30% 30% at 52% 96%, rgba(34,211,238,.16), transparent 66%);
  animation:aurora 22s ease-in-out infinite alternate;
  will-change:transform;
}
@keyframes aurora{
  0%  {transform:translate3d(0,0,0) scale(1)}
  50% {transform:translate3d(-2.2%,1.6%,0) scale(1.06)}
  100%{transform:translate3d(2%,-1.4%,0) scale(1.03)}
}
/* 细网格水纹 */
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.42;
  background-image:
    repeating-linear-gradient(180deg, rgba(255,255,255,.05) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 52px);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 76%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 76%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:64px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:11.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--cyan-400);
  border:1px solid rgba(34,211,238,.32);background:rgba(34,211,238,.06);
  padding:8px 15px;border-radius:999px;margin-bottom:28px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan-400);display:block;
  box-shadow:0 0 0 0 rgba(34,211,238,.7);animation:pulse 2.6s ease-out infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(34,211,238,.65)}
  70%{box-shadow:0 0 0 9px rgba(34,211,238,0)}
  100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}
}
.hero h1{font-size:52px;letter-spacing:-.032em;margin-bottom:24px;line-height:1.08}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(105deg,var(--cyan-400) 10%,#7dd3fc 45%,var(--teal) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:18.5px;color:#b6c8d9;max-width:580px;margin-bottom:38px;line-height:1.72}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;
  padding:15px 26px;border-radius:12px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
  border:1px solid transparent;
}
.btn-primary{background:linear-gradient(135deg,var(--cyan-500),var(--teal));color:#04202b;box-shadow:0 18px 40px -18px rgba(6,182,212,.95)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 24px 50px -20px rgba(6,182,212,1)}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:55%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-18deg);transition:left .65s var(--ease);
}
.btn-primary:hover::after{left:135%}
.btn-ghost{border-color:rgba(255,255,255,.24);color:#fff;background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.46);transform:translateY(-2px)}

/* 数字统计 */
.hero-stats{display:grid;grid-template-columns:repeat(4,auto);gap:26px 38px;margin-top:58px;justify-content:start}
.hero-stats div{position:relative;padding-top:14px}
.hero-stats div::before{
  content:"";position:absolute;top:0;left:0;width:30px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan-400),transparent);
}
.hero-stats div strong{
  display:block;font-size:31px;font-weight:800;color:#fff;line-height:1.05;
  letter-spacing:-.03em;font-variant-numeric:tabular-nums;
}
.hero-stats div span{font-size:12.5px;color:var(--txt-inv-soft);letter-spacing:.02em;display:block;margin-top:5px}

/* 首屏卡片 */
.hero-visual{position:relative;z-index:2}
.hero-visual::before{
  content:"";position:absolute;inset:-8% -6%;border-radius:32px;pointer-events:none;
  background:radial-gradient(60% 60% at 60% 35%, rgba(6,182,212,.26), transparent 68%);
  filter:blur(6px);
}
.hero-card{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.028));
  border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);padding:28px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  animation:floaty 7s ease-in-out infinite alternate;
}
@keyframes floaty{
  from{transform:translateY(0)}
  to{transform:translateY(-9px)}
}
.hero-card .tag{font-size:11px;letter-spacing:.19em;text-transform:uppercase;color:var(--cyan-400);font-weight:700;margin-bottom:16px}
.hero-card .shot{
  background:#fff;border-radius:15px;padding:14px;margin-bottom:20px;
  box-shadow:inset 0 0 0 1px rgba(10,22,38,.05);
}
.hero-card ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.hero-card li{display:flex;gap:10px;font-size:14px;color:#b6c8d9;text-align:left}
.hero-card li b{color:#fff;font-weight:600;flex:0 0 auto}
.hero-card li span{flex:1 1 auto;min-width:0}

/* 首屏"向下"提示 */
.scroll-cue{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;color:rgba(159,180,200,.75);
}
.scroll-cue i{display:block;width:1px;height:38px;background:linear-gradient(180deg,rgba(34,211,238,.85),transparent);
  animation:cue 2.2s ease-in-out infinite}
@keyframes cue{
  0%,100%{opacity:.35;transform:scaleY(.7)}
  50%{opacity:1;transform:scaleY(1)}
}

/* ---------- 通用区块 ---------- */
section{padding:112px 0}
.sec-dark{background:linear-gradient(180deg,var(--navy-900),var(--navy-800));color:#fff}
.sec-light{background:var(--paper)}
.sec-sand{background:var(--sand)}
.sec-head{max-width:820px;margin-bottom:58px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head .kicker{
  display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;
  color:var(--cyan-600);margin-bottom:16px;
}
.sec-head .kicker::after{content:"";display:block;width:26px;height:2px;border-radius:2px;margin-top:9px;
  background:linear-gradient(90deg,var(--cyan-500),transparent)}
.sec-head.center .kicker::after{margin-left:auto;margin-right:auto;background:linear-gradient(90deg,transparent,var(--cyan-500),transparent)}
.sec-dark .sec-head .kicker{color:var(--cyan-400)}
.sec-head h2{font-size:43px;margin-bottom:18px;letter-spacing:-.028em}
.sec-head p{font-size:17.5px;color:var(--txt-soft);line-height:1.72}
.sec-dark .sec-head p{color:var(--txt-inv-soft)}

/* ---------- 产品卡 ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  position:relative;background:var(--paper);border:1px solid var(--line-soft);
  border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.card::after{ /* 悬停时浮现的青色描边 */
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(6,182,212,0);transition:box-shadow .35s var(--ease);
}
.card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg);border-color:rgba(6,182,212,.28)}
.card:hover::after{box-shadow:inset 0 0 0 1px rgba(6,182,212,.28)}
.card .ph{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#fafcfe,#eef4f9);
  padding:20px;display:flex;align-items:center;justify-content:center;min-height:208px;
}
.card .ph img{
  max-height:168px;width:auto;object-fit:contain;mix-blend-mode:multiply;
  transition:transform .55s var(--ease);
}
.card:hover .ph img{transform:scale(1.055)}
.card .bd{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card .code{font-size:11px;font-weight:800;letter-spacing:.16em;color:var(--cyan-600);margin-bottom:9px}
.card h3{font-size:18px;margin-bottom:11px;letter-spacing:-.02em}
.card .spec{font-size:13.5px;color:var(--txt-soft);flex:1;line-height:1.72}
.card .spec b{color:var(--ink);font-weight:600}
.card .meta{margin-top:18px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--txt-soft);display:flex;justify-content:space-between;gap:8px}

/* ---------- 能力/流程 ---------- */
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.feat{display:grid;gap:30px}
.feat-item{display:flex;gap:18px}
.feat-item .ico{
  flex:0 0 48px;height:48px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(6,182,212,.16),rgba(6,182,212,.05));
  border:1px solid rgba(6,182,212,.26);color:var(--cyan-600);
  font-weight:800;font-size:15px;letter-spacing:-.01em;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.feat-item:hover .ico{transform:translateY(-3px);box-shadow:0 14px 28px -16px rgba(6,182,212,.95)}
.sec-dark .feat-item .ico{
  background:linear-gradient(160deg,rgba(34,211,238,.14),rgba(34,211,238,.04));
  border-color:rgba(34,211,238,.3);color:var(--cyan-400);
}
.feat-item h4{font-size:17px;margin-bottom:6px;letter-spacing:-.02em}
.feat-item p{font-size:14.5px;color:var(--txt-soft);margin:0;line-height:1.72}
.sec-dark .feat-item p{color:var(--txt-inv-soft)}

.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:14px}
.flow-4{grid-template-columns:repeat(4,1fr)}
.step{position:relative;border-top:2px solid rgba(6,182,212,.35);padding-top:18px}
.step::before{
  content:"";position:absolute;top:-2px;left:0;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan-500),var(--teal));
  transition:width .5s var(--ease);
}
.step:hover::before{width:100%}
.step b{display:block;font-size:14.5px;margin-bottom:7px;letter-spacing:-.01em}
.step span{font-size:13px;color:var(--txt-soft);line-height:1.7}
.sec-dark .step{border-color:rgba(34,211,238,.28)}
.sec-dark .step span{color:var(--txt-inv-soft)}

/* ---------- 规格表 ---------- */
.tbl{
  width:100%;border-collapse:collapse;font-size:14.5px;
  background:var(--paper);border-radius:var(--radius);overflow:hidden;
  box-shadow:0 0 0 1px var(--line-soft);
}
.tbl th{
  background:linear-gradient(120deg,var(--navy-800),var(--navy-600));color:#fff;text-align:left;
  font-weight:600;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;padding:15px 18px;
}
/* 跨两列的整行标题：读起来是"标题"而不是"列名"，所以不做大写、字距放开 */
.tbl th[colspan]{
  font-size:14px;font-weight:700;letter-spacing:.02em;text-transform:none;
  padding:17px 18px;
  background:
    radial-gradient(600px 120px at 92% 0%, rgba(6,182,212,.22), transparent 62%),
    linear-gradient(120deg,var(--navy-800),var(--navy-600));
}
.tbl th[colspan]::after{
  content:"";display:block;width:26px;height:2px;border-radius:2px;margin-top:9px;
  background:linear-gradient(90deg,var(--cyan-400),transparent);
}
.tbl td{padding:14px 18px;border-bottom:1px solid var(--line-soft);vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:nth-child(even) td{background:#fafcfe}
.tbl tbody tr{transition:background .2s var(--ease)}
.tbl tbody tr:hover td{background:rgba(6,182,212,.045)}
.tbl td:first-child{font-weight:600;color:var(--navy-700);width:32%}

/* ---------- CTA 条 ---------- */
.cta{
  position:relative;overflow:hidden;
  background:radial-gradient(900px 320px at 88% 0%, rgba(6,182,212,.28), transparent 62%),
             linear-gradient(120deg,var(--navy-800),var(--navy-600));
  color:#fff;border-radius:var(--radius-lg);padding:58px 58px;
  display:flex;align-items:center;justify-content:space-between;gap:38px;flex-wrap:wrap;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--hair-inv);
}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 44px);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.7),transparent 70%);
  mask-image:linear-gradient(90deg,rgba(0,0,0,.7),transparent 70%);
}
.cta > *{position:relative;z-index:1}
.cta h3{font-size:32px;margin-bottom:12px;letter-spacing:-.028em}
.cta p{color:var(--txt-inv-soft);margin:0;max-width:580px}

/* ---------- 生产实拍 ---------- */
.photos{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.photos figure{
  margin:0;background:var(--paper);border:1px solid var(--line-soft);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:0 2px 6px -2px rgba(5,13,24,.07);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.photos figure:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(6,182,212,.24)}
.photos img{
  width:100%;height:auto;display:block;aspect-ratio:3/2;object-fit:cover;
  transition:transform .7s var(--ease);
}
.photos figure:hover img{transform:scale(1.035)}
.photos figcaption{padding:20px 22px 22px;display:flex;flex-direction:column;gap:6px}
.photos figcaption b{font-size:16.5px;color:var(--navy-700);letter-spacing:-.018em}
.photos figcaption span{font-size:13.5px;color:var(--txt-soft);line-height:1.7}


/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px}
.info-row{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-soft)}
.info-row .k{flex:0 0 118px;font-weight:700;font-size:13.5px;color:var(--navy-700);letter-spacing:.01em}
.info-row .v{font-size:15px}
.info-row .v a{color:var(--cyan-600);font-weight:600}
.info-row .v a:hover{text-decoration:underline}
.form{display:grid;gap:17px}
.form label{font-size:13px;font-weight:600;display:block;margin-bottom:7px;letter-spacing:.01em}
.form input,.form textarea,.form select{
  width:100%;padding:14px 16px;border:1px solid var(--line-soft);border-radius:12px;
  font-family:inherit;font-size:15px;background:var(--paper);color:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form input:hover,.form textarea:hover,.form select:hover{border-color:#c3d4e2}
.form input:focus,.form textarea:focus,.form select:focus{
  outline:none;border-color:var(--cyan-500);box-shadow:0 0 0 4px rgba(6,182,212,.14);
}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:17px}
.form select{
  appearance:none;-webkit-appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--navy-700) 50%),linear-gradient(135deg,var(--navy-700) 50%,transparent 50%);
  background-position:calc(100% - 21px) 23px,calc(100% - 15px) 23px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}

/* ---------- 联系人（左右并排） ---------- */
.people{display:grid;grid-template-columns:1fr 1fr;gap:22px 28px}
.person{
  display:flex;flex-direction:column;gap:5px;min-width:0;font-size:14.5px;
  padding:18px 20px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(6,182,212,.055),rgba(6,182,212,.015));
  border:1px solid rgba(6,182,212,.16);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.person:hover{transform:translateY(-3px);border-color:rgba(6,182,212,.34);box-shadow:0 18px 36px -24px rgba(6,182,212,.9)}
.person b{font-size:16px;font-weight:700;color:var(--navy-700);line-height:1.3;letter-spacing:-.015em}
.person a{color:var(--cyan-600);font-weight:600;overflow-wrap:anywhere}
.person a:hover{text-decoration:underline}
.person span{color:var(--txt-soft);font-size:13.5px;overflow-wrap:anywhere}

/* ---------- 页脚 ---------- */
footer{
  position:relative;background:var(--navy-950);color:var(--txt-inv-soft);
  padding:76px 0 34px;font-size:14px;
}
footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),transparent);
}
.foot-grid{display:grid;grid-template-columns:.95fr .66fr .66fr 2.15fr;gap:38px;margin-bottom:48px}
footer h4{
  color:#fff;font-size:12px;margin-bottom:18px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;
}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
footer li{line-height:1.6}
footer a:hover{color:var(--cyan-400)}
footer .person{
  background:rgba(255,255,255,.035);border-color:rgba(255,255,255,.1);padding:15px 16px;
}
footer .person:hover{border-color:rgba(34,211,238,.35);box-shadow:none;transform:none}
footer .person b{color:#fff;font-size:14.5px}
footer .person a{color:var(--cyan-400);font-size:12.5px}
footer .person span{color:var(--txt-inv-soft);font-size:12.5px}
.foot-addr{font-size:13px;line-height:1.75;margin:18px 0 0;color:var(--txt-inv-soft)}
.foot-bot{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;
}

/* ---------- 小工具 ---------- */
.badge{
  display:inline-block;font-size:12px;font-weight:700;color:var(--cyan-600);
  background:rgba(6,182,212,.09);border:1px solid rgba(6,182,212,.24);
  padding:7px 13px;border-radius:999px;
}
.sec-dark .badge{color:var(--cyan-400);background:rgba(34,211,238,.08);border-color:rgba(34,211,238,.24)}
.note{font-size:13px;color:var(--txt-soft);margin-top:14px}
.sec-dark .note{color:var(--txt-inv-soft)}

/* ---------- 渐入（JS 可用时才隐藏；另有 1.5s 兜底强制显示） ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
/* 卡片依次浮现，比整片同时出现精致 */
.js .cards .reveal:nth-child(1){transition-delay:.02s}
.js .cards .reveal:nth-child(2){transition-delay:.09s}
.js .cards .reveal:nth-child(3){transition-delay:.16s}
.js .cards .reveal:nth-child(4){transition-delay:.23s}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero h1{font-size:48px}
  .flow{grid-template-columns:repeat(3,1fr)}
  .flow-4{grid-template-columns:repeat(2,1fr)}
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  section{padding:92px 0}
}
@media (max-width:760px){
  .nav-in{height:72px}
  .nav.scrolled .nav-in{height:64px}
  .nav-links{
    display:none;position:absolute;top:72px;left:0;right:0;
    background:rgba(3,8,15,.985);backdrop-filter:blur(16px);
    flex-direction:column;align-items:stretch;padding:14px;gap:4px;
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 60px -30px rgba(0,0,0,.9);
  }
  .nav-links.open{display:flex}
  .nav-cta{margin:8px 0 0;text-align:center;justify-content:center}
  /* 手机上语言按钮要一直可见（原来藏在汉堡菜单里，等于没有） */
  .lang{order:2;margin-left:auto;margin-right:10px}
  .burger{order:3;margin-left:0}
  .people{grid-template-columns:1fr;gap:14px}
  /* 手机上顶栏窄：缩小徽章、藏掉副标题，给语言按钮和汉堡让位，避免换行/溢出 */
  .brand{gap:11px}
  .brand-mark{width:42px;height:42px;border-radius:12px}
  .brand-mark img{width:31px;height:31px}
  .brand-txt{padding-left:11px}
  .brand-txt b{font-size:16px;letter-spacing:.14em}
  .brand-txt i{display:none}
  .nav.scrolled .brand-mark{width:40px;height:40px}
  .nav.scrolled .brand-mark img{width:29px;height:29px}
  .burger{display:block}
  section{padding:68px 0}
  .hero{padding:70px 0 84px}
  .hero h1{font-size:35px}
  .hero p.lead{font-size:16.5px}
  .sec-head h2{font-size:30px}
  .sec-head{margin-bottom:42px}
  .cards{grid-template-columns:1fr}
  .cols-2,.contact-grid{grid-template-columns:1fr;gap:38px}
  .flow{grid-template-columns:1fr 1fr}
  .flow-4{grid-template-columns:1fr}
  .form .row2{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr;gap:20px 22px}
  .hero-stats div strong{font-size:26px}
  .hero-stats div span{font-size:12px}
  .hero-card{padding:20px}
  .hero-card{animation:none}
  .wrap{padding:0 18px}
  .cta{padding:40px 26px;text-align:center;justify-content:center;border-radius:18px}
  .cta h3{font-size:25px}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .info-row{flex-direction:column;gap:5px}
  .info-row .k{flex:none}
  .scroll-cue{display:none}
  .person{padding:15px 16px}
  /* 实拍：手机上一列；通栏带压低 */
  .photos{grid-template-columns:1fr;gap:18px}
  .photos figcaption{padding:16px 18px 18px}
}

/* ---------- 尊重系统"减少动态" ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .hero::before{animation:none}
  .hero-card{animation:none}
  .eyebrow i{animation:none}
  .scroll-cue i{animation:none}
  .progress{transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;animation-iteration-count:1 !important}
}