/* ==========================================================================
   佰研智能 BAIYAN INTELLIGENCE — 官网设计系统
   ========================================================================== */
:root{
  --blue-900:#062B4E;
  --blue-800:#0A3C6B;
  --blue-700:#0B4E8F;
  --blue-600:#0F63A8;
  --blue-500:#1380C4;
  --cyan-600:#0B8CBF;
  --cyan-500:#0E9FD8;
  --cyan-400:#25B6E8;
  --cyan-200:#BEE8F8;
  --cyan-50:#EDF7FD;

  --ink:#0E1B2A;
  --ink-2:#41536A;
  --ink-3:#7C8DA3;
  --line:#E4EBF3;
  --line-2:#EFF4F9;

  --bg:#FFFFFF;
  --bg-soft:#F6FAFD;
  --bg-tint:#EAF3FB;

  --ok:#12A87A;
  --warn:#E08B22;

  --radius:16px;
  --radius-sm:10px;
  --radius-lg:22px;
  --shadow-sm:0 2px 8px rgba(11,78,143,.06);
  --shadow:0 10px 30px rgba(11,78,143,.08);
  --shadow-lg:0 24px 60px rgba(8,50,95,.14);

  --wrap:1200px;
  --nav-h:72px;

  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{line-height:1.28;margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

/* ---------- 布局 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.section--tint{background:linear-gradient(180deg,#F6FAFD 0%,#EAF3FB 100%)}
.section--dark{background:
   radial-gradient(1200px 500px at 15% -10%,rgba(37,182,232,.28),transparent 60%),
   linear-gradient(150deg,#062B4E 0%,#0A3C6B 55%,#0B4E8F 100%);
   color:#fff}
.section--tight{padding:64px 0}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:780px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.14em;color:var(--cyan-600);text-transform:uppercase;margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan-500),var(--cyan-200));border-radius:2px}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);color:var(--blue-900);letter-spacing:-.02em}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px}
.section--dark .sec-head h2{color:#fff}
.section--dark .sec-head p{color:rgba(255,255,255,.78)}
.section--dark .kicker{color:var(--cyan-300)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:.22s ease;white-space:nowrap;
}
.btn--primary{background:linear-gradient(135deg,var(--blue-700),var(--blue-500));color:#fff;box-shadow:0 8px 22px rgba(11,78,143,.26)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(11,78,143,.34)}
.btn--ghost{background:#fff;color:var(--blue-700);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px)}
.btn--light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.32)}
.btn--light:hover{background:rgba(255,255,255,.2)}
.btn--white{background:#fff;color:var(--blue-700)}
.btn--white:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.2)}
.btn--sm{padding:9px 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--cyan-600);font-weight:600;font-size:14.5px}
.link-arrow svg{transition:.2s}
.link-arrow:hover svg{transform:translateX(4px)}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.topbar{
  background:var(--blue-900);color:rgba(255,255,255,.72);font-size:13px;
}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.topbar a{color:rgba(255,255,255,.72);transition:.2s}
.topbar a:hover{color:#fff}
.topbar .tb-right{display:flex;gap:20px;align-items:center}

.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);
  transition:box-shadow .25s;
}
.site-header.scrolled{box-shadow:0 6px 24px rgba(11,78,143,.09)}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:24px}
.nav__logo img{height:40px;width:auto}
.nav__menu{display:flex;align-items:center;gap:4px}
.nav__menu a{
  position:relative;padding:10px 15px;font-size:15px;font-weight:500;color:var(--ink-2);
  border-radius:9px;transition:.2s;
}
.nav__menu a:hover{color:var(--blue-700);background:var(--bg-tint)}
.nav__menu a.active{color:var(--blue-700);font-weight:700}
.nav__menu a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--cyan-500),var(--blue-600));border-radius:2px;
}
.nav__cta{display:flex;align-items:center;gap:12px}
.lang{display:flex;align-items:center;gap:6px;font-size:13.5px;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:6px 12px}
.lang b{color:var(--blue-700)}
.nav__burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;align-items:center;justify-content:center}
.nav__burger span{display:block;width:18px;height:2px;background:var(--blue-800);border-radius:2px;position:relative}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--blue-800);border-radius:2px}
.nav__burger span::before{top:-6px}.nav__burger span::after{top:6px}

.mobile-menu{
  display:none;position:fixed;inset:var(--nav-h) 0 0 0;background:#fff;z-index:55;
  padding:20px 24px 40px;overflow-y:auto;
}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:15px 6px;font-size:17px;font-weight:600;color:var(--blue-900);border-bottom:1px solid var(--line-2)}
.mobile-menu .btn{margin-top:22px;width:100%;display:flex;justify-content:center}
.mobile-menu__lang{margin-top:20px;text-align:center}
.mobile-menu__lang a{display:inline-block;padding:6px 10px;border:0;font-size:15px;font-weight:600;color:var(--blue-600)}

/* ==========================================================================
   首页 Hero
   ========================================================================== */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 480px at 82% -8%,rgba(37,182,232,.40),transparent 62%),
    radial-gradient(700px 420px at 8% 108%,rgba(19,128,196,.35),transparent 60%),
    linear-gradient(155deg,#04223F 0%,#083461 48%,#0B4E8F 100%);
}
.hero__grid{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 40%,#000 20%,transparent 100%);
          mask-image:radial-gradient(70% 70% at 50% 40%,#000 20%,transparent 100%);
}
.hero__inner{position:relative;padding:88px 0 96px}
.hero__cols{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero-panel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-lg);padding:28px 28px 24px;backdrop-filter:blur(10px);
  box-shadow:0 30px 70px rgba(0,0,0,.22);
}
.hero-panel__title{font-size:13px;letter-spacing:.14em;font-weight:800;color:var(--cyan-300);text-transform:uppercase;margin-bottom:20px}
.hero-panel__list{display:grid;gap:2px}
.hero-panel__item{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.10)}
.hero-panel__item:last-child{border-bottom:none}
.hero-panel__item .ico{
  width:38px;height:38px;flex:none;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(37,182,232,.32),rgba(37,182,232,.12));color:#9FE4FB;
  border:1px solid rgba(159,228,251,.28);
}
.hero-panel__item .ico svg{width:20px;height:20px}
.hero-panel__item b{display:block;font-size:15.5px;color:#fff;font-weight:700;margin-bottom:2px}
.hero-panel__item p{font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.6}
.hero-panel__foot{margin-top:16px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.18);font-size:13.5px;color:rgba(255,255,255,.72)}
.hero-panel__foot b{color:var(--cyan-300)}
.hero__badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);
  font-size:13.5px;letter-spacing:.02em;margin-bottom:26px;
}
.hero__badge i{width:7px;height:7px;border-radius:50%;background:var(--cyan-400);box-shadow:0 0 0 4px rgba(37,182,232,.28)}
.hero h1{font-size:clamp(32px,4.6vw,58px);line-height:1.16;letter-spacing:-.025em;max-width:15em}
.hero h1 em{
  font-style:normal;background:linear-gradient(100deg,#6FDBFA,#25B6E8 45%,#8FE6FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{margin-top:24px;max-width:640px;font-size:17.5px;color:rgba(255,255,255,.84);line-height:1.85}
.hero__cta{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
.hero__stats{
  margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  border-top:1px solid rgba(255,255,255,.16);padding-top:34px;max-width:940px;
}
.hstat b{display:block;font-size:clamp(26px,3.2vw,38px);font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(120deg,#fff,#BEE8F8);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.66)}

/* 跑马灯关键词 */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;overflow:hidden}
.marquee__track{display:flex;gap:52px;padding:18px 0;animation:slide 34s linear infinite;width:max-content}
.marquee__track span{display:inline-flex;align-items:center;gap:10px;color:var(--ink-3);font-size:14.5px;font-weight:600;white-space:nowrap}
.marquee__track span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan-400)}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ==========================================================================
   卡片通用
   ========================================================================== */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:.25s ease;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFE2F3}
.card h3{font-size:18.5px;color:var(--blue-900);margin-bottom:10px}
.card p{color:var(--ink-2);font-size:14.8px}
.card__no{
  font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--cyan-500);
  display:block;margin-bottom:14px;
}
.card__ico{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--cyan-50),#DCEEFB);color:var(--blue-700);margin-bottom:18px;
}
.card__ico svg{width:26px;height:26px}
.card ul{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.card ul li{font-size:13px;color:var(--blue-600);background:var(--cyan-50);border-radius:999px;padding:4px 11px}

/* 装备卡（带图） */
.eq-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.28s ease;display:flex;flex-direction:column;
}
.eq-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#C9DEF1}
.eq-card__media{position:relative;aspect-ratio:4/3;background:linear-gradient(180deg,#F7FAFD,#EDF4FA);overflow:hidden}
.eq-card__media img{width:100%;height:100%;object-fit:contain;padding:18px;transition:.4s ease}
.eq-card:hover .eq-card__media img{transform:scale(1.05)}
.eq-card__tag{
  position:absolute;top:14px;left:14px;background:rgba(255,255,255,.92);color:var(--blue-700);
  font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px;border:1px solid var(--line);
}
.eq-card__body{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column}
.eq-card__body h3{font-size:18px;color:var(--blue-900)}
.eq-card__body p{margin-top:9px;color:var(--ink-2);font-size:14.5px;flex:1}
.eq-card__meta{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);display:flex;flex-wrap:wrap;gap:7px}
.eq-card__meta span{font-size:12.5px;color:var(--ink-3);background:var(--bg-soft);padding:4px 10px;border-radius:6px}

/* ==========================================================================
   解决方案
   ========================================================================== */
.sol-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.sol-tab{
  padding:10px 20px;border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--ink-2);font-size:14.5px;font-weight:600;transition:.2s;
}
.sol-tab:hover{border-color:var(--cyan-400);color:var(--blue-700)}
.sol-tab.active{background:linear-gradient(135deg,var(--blue-700),var(--blue-500));color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(11,78,143,.24)}
.sol-panel{display:none}
.sol-panel.active{display:block;animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.split{display:grid;grid-template-columns:1.05fr 1fr;gap:46px;align-items:center}
.split__media{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow);
}
.split__media img{width:100%;display:block}
.split h3{font-size:clamp(21px,2.4vw,28px);color:var(--blue-900);margin-bottom:14px}
.split .lead{color:var(--ink-2);font-size:16px;margin-bottom:22px}
.chk{display:grid;gap:14px}
.chk li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2)}
.chk li b{color:var(--blue-900);font-weight:700}
.chk svg{flex:none;margin-top:4px;color:var(--cyan-500)}

/* ==========================================================================
   流程
   ========================================================================== */
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:f}
.flow__item{
  position:relative;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);padding:24px 20px;transition:.25s;
}
.flow__item:hover{background:rgba(255,255,255,.13);transform:translateY(-4px)}
.flow__item b{display:block;font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--cyan-300);margin-bottom:12px}
.flow__item h4{font-size:16.5px;color:#fff;margin-bottom:8px}
.flow__item p{font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.7}
.flow__item::after{
  content:"";position:absolute;right:-9px;top:50%;width:14px;height:14px;border-top:2px solid rgba(255,255,255,.28);
  border-right:2px solid rgba(255,255,255,.28);transform:translateY(-50%) rotate(45deg);
}
.flow__item:last-child::after{display:none}

/* ==========================================================================
   案例
   ========================================================================== */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.28s;display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.case-card__head{
  padding:24px 26px;background:linear-gradient(135deg,#0A3C6B,#0F63A8);color:#fff;position:relative;overflow:hidden;
}
.case-card__head::after{
  content:"";position:absolute;right:-40px;top:-40px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,182,232,.5),transparent 70%);
}
.case-card__head span{font-size:12.5px;letter-spacing:.1em;opacity:.75;font-weight:700}
.case-card__head h3{font-size:17.5px;margin-top:10px;color:#fff;position:relative}
.case-card__body{padding:24px 26px;flex:1;display:flex;flex-direction:column;gap:16px}
.case-card__body p{font-size:14.5px;color:var(--ink-2)}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border-top:1px dashed var(--line);padding-top:18px}
.kpi b{display:block;font-size:19px;color:var(--blue-700);font-weight:800}
.kpi span{font-size:12.5px;color:var(--ink-3)}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{background:var(--blue-900);color:rgba(255,255,255,.68);padding:64px 0 0}
.footer__top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer__top h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em}
.footer__top a,.footer__top li{font-size:14px;color:rgba(255,255,255,.68);line-height:2.2;transition:.2s}
.footer__top a:hover{color:#fff}
.footer__brand img{height:44px;margin-bottom:18px}
.footer__brand p{font-size:14px;line-height:1.9;max-width:300px}
.footer__contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.7;margin-bottom:10px}
.footer__contact svg{flex:none;margin-top:5px;color:var(--cyan-400)}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}
.footer__bottom a{color:rgba(255,255,255,.6);transition:.2s}
.footer__bottom a:hover{color:#fff}
.footer__bottom .icp{border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:1px}
.footer__bottom .icp:hover{border-bottom-color:rgba(255,255,255,.55)}
.footer__bottom .sep{opacity:.35}

/* ==========================================================================
   内页头图
   ========================================================================== */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background:
    radial-gradient(800px 400px at 85% 0%,rgba(37,182,232,.34),transparent 62%),
    linear-gradient(150deg,#062B4E,#0A3C6B 60%,#0B4E8F);
}
.page-hero__grid{position:absolute;inset:0;opacity:.3;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:56px 56px;-webkit-mask-image:linear-gradient(180deg,#000,transparent);mask-image:linear-gradient(180deg,#000,transparent)}
.page-hero__inner{position:relative;padding:64px 0 60px}
.page-hero h1{font-size:clamp(28px,3.6vw,42px);letter-spacing:-.02em}
.page-hero p{margin-top:16px;max-width:720px;color:rgba(255,255,255,.82);font-size:16.5px}
.crumb{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.6)}
.crumb a:hover{color:#fff}

/* ==========================================================================
   杂项
   ========================================================================== */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-strip .item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center}
.stat-strip .item b{display:block;font-size:34px;font-weight:800;color:var(--blue-700);letter-spacing:-.02em}
.stat-strip .item span{display:block;margin-top:6px;font-size:14px;color:var(--ink-3)}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
table.spec th,table.spec td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
table.spec th{background:var(--bg-soft);color:var(--blue-900);font-weight:700;font-size:13.5px;letter-spacing:.02em}
table.spec tr:last-child td{border-bottom:none}
table.spec td:first-child{color:var(--blue-800);font-weight:600}

.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--cyan-400),var(--cyan-200))}
.timeline li{position:relative;padding-bottom:30px}
.timeline li::before{content:"";position:absolute;left:-30px;top:7px;width:12px;height:12px;border-radius:50%;background:#fff;border:3px solid var(--cyan-500)}
.timeline b{display:block;font-size:16px;color:var(--blue-900)}
.timeline span{display:block;font-size:13px;color:var(--cyan-600);font-weight:700;letter-spacing:.06em;margin-bottom:6px}
.timeline p{font-size:14.5px;color:var(--ink-2)}

.cta-band{
  border-radius:var(--radius-lg);padding:52px 48px;color:#fff;position:relative;overflow:hidden;
  background:radial-gradient(700px 300px at 88% 10%,rgba(37,182,232,.45),transparent 62%),linear-gradient(135deg,#062B4E,#0B4E8F);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);color:#fff}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.8);max-width:620px}

.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:44px}
.contact-list li{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.contact-list .ico{width:44px;height:44px;flex:none;border-radius:12px;background:var(--cyan-50);display:flex;align-items:center;justify-content:center;color:var(--blue-700)}
.contact-list b{display:block;font-size:14px;color:var(--ink-3);font-weight:600;margin-bottom:3px}
.contact-list span{font-size:16px;color:var(--blue-900);font-weight:600}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--blue-900);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-family:inherit;font-size:15px;color:var(--ink);background:var(--bg-soft);transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--cyan-400);background:#fff;box-shadow:0 0 0 4px rgba(37,182,232,.14)}
.field textarea{min-height:120px;resize:vertical}

.note{background:var(--cyan-50);border:1px solid var(--cyan-200);border-radius:var(--radius-sm);padding:16px 18px;font-size:14px;color:var(--blue-800)}

/* ==========================================================================
   实拍图 / 设备视频
   ========================================================================== */
.shot-grid{display:grid;gap:20px}
.shot-grid.cols-2{grid-template-columns:1.3fr 1fr}
.shot-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.shot{
  position:relative;margin:0;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);background:#0C1A2B;box-shadow:var(--shadow);
}
.shot img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.shot:hover img{transform:scale(1.045)}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:46px 24px 18px;color:#fff;
  font-size:14px;line-height:1.6;background:linear-gradient(transparent,rgba(4,20,38,.86));
}
.shot figcaption b{display:block;font-size:16.5px;font-weight:700;margin-bottom:3px}
.shot figcaption em{font-style:normal;color:rgba(255,255,255,.74);font-size:13.5px}
.shot--r32 img{aspect-ratio:3/2;height:auto}
.shot--r43 img{aspect-ratio:4/3;height:auto}
.shot--r169 img{aspect-ratio:16/9;height:auto}
.shot-stack{display:grid;gap:20px;grid-template-rows:1fr 1fr}
.shot-stack .shot{height:100%}

.vcard{
  margin:0;position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);background:#08192B;box-shadow:var(--shadow);cursor:pointer;
}
.vcard__media{position:relative;aspect-ratio:3/4;background:#08192B}
.vcard__media video,.vcard__media img{width:100%;height:100%;object-fit:cover;display:block}
.vcard__play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(rgba(4,20,38,.08),rgba(4,20,38,.5));transition:.3s;
}
.vcard__play i{
  width:62px;height:62px;border-radius:50%;background:rgba(255,255,255,.93);
  display:flex;align-items:center;justify-content:center;color:var(--blue-700);
  box-shadow:0 10px 30px rgba(0,0,0,.3);transition:.28s;
}
.vcard__play i::before{content:"";display:block;width:0;height:0;margin-left:5px;
  border-left:17px solid currentColor;border-top:11px solid transparent;border-bottom:11px solid transparent}
.vcard:hover .vcard__play i{transform:scale(1.08)}
.vcard.is-playing .vcard__play{opacity:0;visibility:hidden}
.vcard__cap{padding:15px 18px;color:#fff;background:#0B2440}
.vcard__cap b{display:block;font-size:15.5px;font-weight:700;line-height:1.4}
.vcard__cap span{font-size:13px;color:rgba(255,255,255,.6)}

.env-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.env-strip figure{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.env-strip img{aspect-ratio:1;width:100%;object-fit:cover;display:block;transition:.5s}
.env-strip figure:hover img{transform:scale(1.07)}
.env-strip figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 12px 9px;font-size:12.5px;color:#fff;
  background:linear-gradient(transparent,rgba(4,20,38,.88));
}

/* 滚动出现 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1080px){
  .g-4{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(3,1fr)}
  .flow__item:nth-child(3n)::after{display:none}
  .footer__top{grid-template-columns:1fr 1fr;gap:32px}
  .hero__stats{grid-template-columns:repeat(2,1fr)}
  .hero__cols{grid-template-columns:1fr;gap:44px}
  .env-strip{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .topbar{display:none}
  .nav__menu,.nav__cta .lang,.nav__cta .btn{display:none}
  .nav__burger{display:flex}
  .mobile-menu{inset:var(--nav-h) 0 0 0}
  .g-3{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr;gap:30px}
  .section{padding:64px 0}
  .shot-grid.cols-2,.shot-grid.cols-3{grid-template-columns:1fr}
}
@media (max-width:640px){
  .wrap{padding:0 18px}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .flow__item::after{display:none}
  .stat-strip{grid-template-columns:1fr 1fr;gap:14px}
  .hero__inner{padding:64px 0 70px}
  .hero__stats{margin-top:44px}
  .cta-band{padding:34px 24px}
  .footer__top{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:8px}
  .kpis{grid-template-columns:1fr 1fr}
  .env-strip{grid-template-columns:repeat(2,1fr)}
  .shot figcaption{padding:38px 18px 14px}
}