/* ==========================================================================
   博思凯 BOSK · 科技感官网样式系统
   ========================================================================== */

:root{
  /* 品牌色 */
  --brand:#0B5CFF;
  --brand-600:#0A4EDB;
  --brand-050:#EAF1FF;
  --cyan:#00D3FF;
  --violet:#6C4BFF;
  --green:#00C48C;
  --orange:#FF8A3D;

  /* 深色 */
  --ink:#070E20;
  --ink-2:#0C1730;
  --ink-3:#122247;

  /* 浅色 */
  --bg:#FFFFFF;
  --bg-soft:#F5F8FF;
  --bg-soft-2:#EEF3FD;

  /* 文本 */
  --text:#111C33;
  --text-2:#5A6A88;
  --text-3:#8A97B0;
  --on-dark:#E8EFFC;
  --on-dark-2:#9FB0D0;

  /* 线条 */
  --line:#E4EAF6;
  --line-dark:rgba(255,255,255,.12);

  /* 尺寸 */
  --container:1200px;
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:24px;
  --header-h:72px;

  /* 阴影 */
  --shadow-sm:0 2px 8px rgba(16,32,64,.06);
  --shadow:0 10px 30px rgba(16,32,64,.08);
  --shadow-lg:0 24px 60px rgba(10,25,60,.14);
  --shadow-brand:0 16px 40px rgba(11,92,255,.24);

  /* 动效 */
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font-family:inherit;font-size:15px}

::selection{background:var(--brand);color:#fff}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#f1f4fa}
::-webkit-scrollbar-thumb{background:#c3cee4;border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:#a3b2d0}

/* ============================ 布局工具 ============================ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container-wide{width:100%;max-width:1440px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--soft{background:var(--bg-soft)}
.section--soft2{background:var(--bg-soft-2)}
.section--dark{background:var(--ink);color:var(--on-dark)}

/* 章节标题 */
.sec-head{max-width:760px;margin:0 auto 56px;text-align:center}
.sec-head--left{margin-left:0;text-align:left}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand);margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:linear-gradient(90deg,var(--brand),var(--cyan));border-radius:2px}
.sec-head h2{font-size:clamp(28px,3.4vw,42px);letter-spacing:-.02em}
.sec-head h2 em{font-style:normal;background:linear-gradient(120deg,var(--brand),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{margin-top:16px;color:var(--text-2);font-size:17px}
.section--dark .sec-head p{color:var(--on-dark-2)}

/* ============================ 顶部条 ============================ */
.topbar{
  background:var(--ink-2);color:var(--on-dark-2);font-size:13px;
  border-bottom:1px solid var(--line-dark);
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:40px;gap:16px}
.topbar-left{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.topbar a{color:var(--on-dark-2)}
.topbar a:hover{color:var(--cyan)}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(0,196,140,.2);display:inline-block;margin-right:6px}

/* ============================ 头部导航 ============================ */
.header{
  position:sticky;top:0;z-index:900;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.header.is-stuck{box-shadow:var(--shadow-sm);border-bottom-color:var(--line)}
.header .container{height:var(--header-h);display:flex;align-items:center;gap:32px}

.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--violet) 55%,var(--cyan));
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.03em;
  box-shadow:0 6px 18px rgba(11,92,255,.32);
  position:relative;overflow:hidden;
}
.logo-mark::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.55) 50%,transparent 60%);
  transform:translateX(-120%);
  animation:sheen 4.5s var(--ease) infinite;
}
@keyframes sheen{0%,70%{transform:translateX(-120%)}100%{transform:translateX(120%)}}
.logo-txt strong{display:block;font-size:17px;letter-spacing:.04em;line-height:1.2}
.logo-txt span{display:block;font-size:11px;color:var(--text-3);letter-spacing:.22em;text-transform:uppercase;line-height:1.4}

.nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav > li{position:relative}
.nav > li > a{
  display:flex;align-items:center;gap:5px;
  padding:10px 14px;border-radius:9px;font-size:15px;font-weight:500;color:var(--text);
}
.nav > li > a:hover,.nav > li.open > a{color:var(--brand);background:var(--brand-050)}
.nav > li.active > a{color:var(--brand)}
.nav > li.active > a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));
}
.nav .caret{width:12px;height:12px;opacity:.55;transition:transform .25s var(--ease)}
.nav > li.open .caret{transform:rotate(180deg)}

.dropdown{
  position:absolute;top:calc(100% + 10px);left:0;min-width:220px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:all .25s var(--ease);
}
.nav > li:hover .dropdown,.nav > li.open .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--text-2)}
.dropdown a:hover{background:var(--bg-soft);color:var(--brand)}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.hotline{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.hotline b{font-size:19px;color:var(--brand);letter-spacing:.02em;font-weight:800}
.hotline svg{color:var(--brand)}

.burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);position:relative}
.burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--text);border-radius:2px;transition:all .3s var(--ease)}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:20px}
.burger span:nth-child(3){top:26px}
.burger.open span:nth-child(1){top:20px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:20px;transform:rotate(-45deg)}

/* 移动菜单 */
.mnav{
  position:fixed;inset:var(--header-h) 0 0 0;background:#fff;z-index:880;
  padding:20px 24px 60px;overflow-y:auto;
  transform:translateX(100%);transition:transform .35s var(--ease-out);
  display:none;
}
.mnav.open{transform:translateX(0)}
.mnav li{border-bottom:1px solid var(--line)}
.mnav > ul > li > a{display:block;padding:15px 0;font-size:17px;font-weight:600}
.mnav .sub{padding:0 0 12px 12px;display:none}
.mnav .sub.open{display:block}
.mnav .sub a{display:block;padding:9px 0;font-size:15px;color:var(--text-2)}
.mnav-foot{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.mnav-foot .btn{width:100%;justify-content:center;margin-bottom:10px}

/* ============================ 按钮 ============================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:all .28s var(--ease);position:relative;overflow:hidden;
}
.btn--primary{background:linear-gradient(120deg,var(--brand),#2E7BFF);color:#fff;box-shadow:var(--shadow-brand)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(11,92,255,.34)}
.btn--ghost{background:#fff;color:var(--brand);border:1px solid #CFDDFB}
.btn--ghost:hover{border-color:var(--brand);transform:translateY(-2px)}
.btn--dark{background:var(--ink-2);color:#fff}
.btn--dark:hover{background:var(--ink-3);transform:translateY(-2px)}
.btn--outline-light{border:1px solid rgba(255,255,255,.34);color:#fff}
.btn--outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;transform:translateY(-2px)}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn--lg{height:54px;padding:0 34px;font-size:16px}
.btn .arrow{transition:transform .28s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}

/* ============================ Hero ============================ */
.hero{
  position:relative;background:var(--ink);color:var(--on-dark);
  padding:104px 0 0;overflow:hidden;isolation:isolate;
}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.75}
.hero-grid{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(rgba(90,140,255,.10) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(90,140,255,.10) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 20%,transparent 78%);
}
.hero-glow{position:absolute;z-index:0;border-radius:50%;filter:blur(90px);pointer-events:none}
.hero-glow--a{width:620px;height:620px;background:rgba(11,92,255,.42);top:-220px;left:-140px}
.hero-glow--b{width:520px;height:520px;background:rgba(0,211,255,.24);bottom:-180px;right:-120px}
.hero-glow--c{width:420px;height:420px;background:rgba(108,75,255,.28);top:36%;right:24%}
.hero .container{position:relative;z-index:2}

.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px 7px 8px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  font-size:13px;color:var(--on-dark-2);backdrop-filter:blur(6px);
}
.hero-badge b{
  background:linear-gradient(120deg,var(--cyan),var(--brand));color:#fff;
  padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.04em;
}
.hero h1{
  margin-top:26px;font-size:clamp(34px,5.2vw,62px);line-height:1.16;letter-spacing:-.03em;font-weight:800;
}
.hero h1 .grad{
  background:linear-gradient(115deg,#7FD7FF 0%,#4E9BFF 40%,#A58CFF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{margin-top:22px;max-width:640px;font-size:17px;color:var(--on-dark-2);line-height:1.9}
.hero-actions{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}

.hero-tags{margin-top:34px;display:flex;gap:10px;flex-wrap:wrap}
.hero-tags span{
  font-size:13px;padding:6px 14px;border-radius:8px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:var(--on-dark-2);
}

/* Hero 数据条 */
.hero-stats{
  margin-top:72px;display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line-dark);
}
.hero-stats > div{padding:26px 20px;border-right:1px solid var(--line-dark);position:relative}
.hero-stats > div:last-child{border-right:0}
.hero-stats .num{
  font-size:clamp(28px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.1;
  background:linear-gradient(120deg,#fff,#8FB6FF);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-stats .num i{font-style:normal;font-size:.55em;margin-left:2px}
.hero-stats .lbl{margin-top:8px;font-size:14px;color:var(--on-dark-2)}

/* Hero 底部波浪 */
.hero-wave{position:relative;z-index:2;margin-top:0;line-height:0}
.hero-wave svg{display:block;width:100%;height:70px}

/* ============================ 统计条（浅色） ============================ */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stats-bar > div{background:#fff;padding:32px 24px;text-align:center;transition:background .3s var(--ease)}
.stats-bar > div:hover{background:var(--bg-soft)}
.stats-bar .num{font-size:38px;font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1.1}
.stats-bar .num i{font-style:normal;font-size:.5em;margin-left:3px}
.stats-bar .lbl{margin-top:8px;font-size:15px;color:var(--text-2)}

/* ============================ 卡片 ============================ */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  transition:all .35s var(--ease);position:relative;overflow:hidden;height:100%;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#CFDDFB}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(120deg,transparent 30%,rgba(11,92,255,.06) 50%,transparent 70%);
  opacity:0;transition:opacity .35s var(--ease);
}
.card:hover::after{opacity:1}

/* 产品卡 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

.prod-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .35s var(--ease);position:relative}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#CFDDFB}
.prod-media{
  aspect-ratio:4/3;background:linear-gradient(160deg,#F7F9FE,#EDF2FB);
  display:grid;place-items:center;padding:20px;overflow:hidden;position:relative;
}
.prod-media::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(11,92,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(11,92,255,.05) 1px,transparent 1px);
  background-size:26px 26px;
}
.prod-media img{max-height:100%;width:auto;max-width:100%;object-fit:contain;position:relative;transition:transform .45s var(--ease)}
.prod-card:hover .prod-media img{transform:scale(1.06)}
.prod-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px;
  background:rgba(11,92,255,.92);color:#fff;
}
.prod-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.prod-body h3{font-size:17px;margin-bottom:8px;transition:color .25s var(--ease)}
.prod-card:hover .prod-body h3{color:var(--brand)}
.prod-body p{font-size:14px;color:var(--text-2);line-height:1.7;flex:1}
.prod-more{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.prod-more svg{transition:transform .3s var(--ease)}
.prod-card:hover .prod-more svg{transform:translateX(4px)}

/* Tabs */
.tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:44px}
.tab{
  padding:10px 22px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:15px;font-weight:500;color:var(--text-2);transition:all .3s var(--ease);
}
.tab:hover{border-color:#B9CDFB;color:var(--brand)}
.tab.active{background:linear-gradient(120deg,var(--brand),#2E7BFF);color:#fff;border-color:transparent;box-shadow:var(--shadow-brand)}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeUp .5s var(--ease-out)}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ============================ 能力卡 ============================ */
.cap-card{
  padding:32px 28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  transition:all .35s var(--ease);position:relative;overflow:hidden;
}
.cap-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#CFDDFB}
.cap-ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(135deg,var(--brand-050),#DCEBFF);color:var(--brand);
}
.cap-card h3{font-size:18px;margin-bottom:10px}
.cap-card p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.cap-card .idx{
  position:absolute;right:18px;top:14px;font-size:44px;font-weight:800;line-height:1;
  color:rgba(11,92,255,.07);letter-spacing:-.04em;
}

/* ============================ 解决方案 ============================ */
.sol-card{
  display:grid;grid-template-columns:1.05fr .95fr;gap:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  transition:all .35s var(--ease);
}
.sol-card + .sol-card{margin-top:28px}
.sol-card:hover{box-shadow:var(--shadow-lg);border-color:#CFDDFB}
.sol-info{padding:44px 44px 40px;display:flex;flex-direction:column}
.sol-info .eyebrow{margin-bottom:14px}
.sol-info h3{font-size:26px;margin-bottom:14px;letter-spacing:-.02em}
.sol-info > p{color:var(--text-2);font-size:15.5px;line-height:1.85}
.sol-points{margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
.sol-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.6}
.sol-points .tick{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;margin-top:2px;
  background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;
  display:grid;place-items:center;font-size:11px;font-weight:700;
}
.sol-actions{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.sol-media{position:relative;min-height:280px;background:linear-gradient(160deg,#F7F9FE,#E9F0FB);display:grid;place-items:center;overflow:hidden}
.sol-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.sol-card:hover .sol-media img{transform:scale(1.04)}
.sol-media .overlay{
  position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(11,92,255,.06),transparent 60%);
}
.sol-card:nth-child(even) .sol-media{order:-1}

/* ============================ 架构图 ============================ */
.arch{
  background:var(--ink);border-radius:var(--radius-lg);padding:56px 40px;color:var(--on-dark);
  position:relative;overflow:hidden;
}
.arch::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,170,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.08) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse 70% 80% at 50% 50%,#000,transparent 80%);
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 50%,#000,transparent 80%);
}
.arch-inner{position:relative}
.arch-layers{display:grid;gap:14px;margin-top:34px}
.arch-layer{
  display:grid;grid-template-columns:120px 1fr;gap:20px;align-items:center;
  padding:18px 22px;border-radius:14px;
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
  transition:all .3s var(--ease);
}
.arch-layer:hover{background:rgba(255,255,255,.08);border-color:rgba(0,211,255,.35);transform:translateX(4px)}
.arch-layer .lname{font-weight:700;font-size:15px;color:#8FC6FF}
.arch-chips{display:flex;gap:8px;flex-wrap:wrap}
.arch-chips span{
  font-size:13px;padding:5px 12px;border-radius:8px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);color:var(--on-dark-2);
}

/* ============================ 案例 ============================ */
.case-card{
  position:relative;border-radius:var(--radius);overflow:hidden;background:var(--ink-2);
  aspect-ratio:4/3;
}
.case-card img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease);opacity:.9}
.case-card:hover img{transform:scale(1.08);opacity:1}
.case-shade{position:absolute;inset:0;background:linear-gradient(0deg,rgba(5,12,28,.92) 8%,rgba(5,12,28,.15) 60%,rgba(5,12,28,.05))}
.case-info{position:absolute;left:0;right:0;bottom:0;padding:24px;color:#fff}
.case-info .ct{font-size:12px;letter-spacing:.12em;color:var(--cyan);text-transform:uppercase;font-weight:600}
.case-info h3{margin-top:8px;font-size:18px;font-weight:600;transition:transform .3s var(--ease)}
.case-card:hover .case-info h3{transform:translateY(-2px)}
.case-info .go{margin-top:10px;font-size:14px;color:rgba(255,255,255,.7);display:inline-flex;align-items:center;gap:6px}
.case-card:hover .go{color:#fff}

/* ============================ 新闻 ============================ */
.news-card{
  display:flex;gap:20px;padding:20px;border-radius:var(--radius);
  border:1px solid var(--line);background:#fff;transition:all .35s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFDDFB}
.news-date{
  flex-shrink:0;width:66px;height:66px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-050),#DDEBFF);color:var(--brand);
  display:grid;place-items:center;text-align:center;line-height:1.1;
}
.news-date b{display:block;font-size:24px;font-weight:800;letter-spacing:-.02em}
.news-date span{display:block;font-size:11px;color:var(--text-2)}
.news-body h3{font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-body h3{color:var(--brand)}
.news-body p{margin-top:8px;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ============================ CTA ============================ */
.cta{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#08132B 0%,#0D2A6B 48%,#123A8F 100%);
  padding:64px 56px;color:#fff;
}
.cta::before{
  content:"";position:absolute;inset:0;
  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:52px 52px;
  mask-image:radial-gradient(ellipse 60% 100% at 100% 0%,#000,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 60% 100% at 100% 0%,#000,transparent 70%);
}
.cta::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:rgba(0,211,255,.3);filter:blur(90px);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta h2{font-size:clamp(26px,3vw,38px);letter-spacing:-.02em}
.cta p{margin-top:14px;color:rgba(255,255,255,.72);font-size:16px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============================ 页脚 ============================ */
.footer{background:var(--ink);color:var(--on-dark-2);padding-top:72px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer h4{color:#fff;font-size:16px;margin-bottom:20px;letter-spacing:.02em}
.footer li{margin-bottom:11px}
.footer li a:hover{color:var(--cyan)}
.footer .brand-block p{margin-top:18px;line-height:1.85;max-width:340px}
.footer .social{display:flex;gap:10px;margin-top:22px}
.footer .social a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);color:#fff;
  transition:all .3s var(--ease);
}
.footer .social a:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-3px)}
.contact-list li{display:flex;gap:12px;margin-bottom:14px;line-height:1.7}
.contact-list svg{flex-shrink:0;margin-top:4px;color:var(--cyan)}
.contact-list b{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7E90B4;
}
.footer-bottom a:hover{color:var(--cyan)}

/* ============================ 页面头图 ============================ */
.pagehead{
  position:relative;background:var(--ink);color:var(--on-dark);padding:76px 0 72px;overflow:hidden;
}
.pagehead::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,170,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.09) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 70% 100% at 30% 0%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 70% 100% at 30% 0%,#000,transparent 72%);
}
.pagehead .glow{position:absolute;width:520px;height:520px;border-radius:50%;filter:blur(100px);background:rgba(11,92,255,.45);top:-240px;right:8%}
.pagehead .container{position:relative;z-index:2}
.pagehead h1{font-size:clamp(30px,4vw,48px);letter-spacing:-.02em;margin-top:14px}
.pagehead p{margin-top:16px;color:var(--on-dark-2);max-width:640px;font-size:16.5px}
.crumbs{margin-top:22px;font-size:13px;color:var(--on-dark-2);display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.crumbs a:hover{color:var(--cyan)}
.crumbs span{opacity:.5}

/* ============================ 关于 ============================ */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-art{position:relative}
.about-art .main-img{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-art .main-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.about-art .float-card{
  position:absolute;bottom:-28px;left:-28px;background:#fff;border-radius:var(--radius);
  padding:20px 24px;box-shadow:var(--shadow-lg);border:1px solid var(--line);
}
.about-art .float-card b{display:block;font-size:30px;color:var(--brand);line-height:1.1;font-weight:800}
.about-art .float-card span{font-size:13px;color:var(--text-2)}
.about-txt h2{font-size:clamp(26px,3vw,36px);margin-bottom:18px}
.about-txt p{color:var(--text-2);line-height:1.9;margin-bottom:16px}
.about-txt p strong{color:var(--text)}

.milestones{position:relative;padding-left:28px}
.milestones::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--brand),var(--cyan),transparent)}
.milestone{position:relative;padding-bottom:28px}
.milestone::before{
  content:"";position:absolute;left:-27px;top:8px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(11,92,255,.14);
}
.milestone .yr{font-weight:800;color:var(--brand);font-size:18px}
.milestone p{margin-top:6px;color:var(--text-2);font-size:15px;line-height:1.7}

.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.honor{
  padding:26px 22px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);text-align:center;
  transition:all .3s var(--ease);
}
.honor:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFDDFB}
.honor .hi{width:44px;height:44px;margin:0 auto 14px;border-radius:12px;background:linear-gradient(135deg,var(--brand-050),#DEEBFF);display:grid;place-items:center;color:var(--brand)}
.honor b{display:block;font-size:15.5px;color:var(--text)}
.honor span{font-size:13px;color:var(--text-2)}

/* ============================ 联系 ============================ */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.info-item{display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
.info-item:first-child{padding-top:0}
.info-ico{width:44px;height:44px;flex-shrink:0;border-radius:12px;background:linear-gradient(135deg,var(--brand-050),#DEEBFF);color:var(--brand);display:grid;place-items:center}
.info-item b{display:block;font-size:16px;margin-bottom:4px}
.info-item p{color:var(--text-2);font-size:15px;line-height:1.7}

.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#FBFCFE;transition:all .25s var(--ease);color:var(--text);
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:0;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(11,92,255,.12);
}
.field textarea{min-height:110px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:13px;color:var(--text-3);margin-top:12px}

/* 办事处 */
.office-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.office{padding:20px;border-radius:var(--radius-sm);background:#fff;border:1px solid var(--line);transition:all .3s var(--ease)}
.office:hover{border-color:#CFDDFB;box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.office b{display:block;font-size:16px;margin-bottom:6px}
.office span{font-size:14px;color:var(--text-2)}

/* ============================ 悬浮客服 ============================ */
.fixed-contact{
  position:fixed;right:18px;bottom:96px;z-index:800;display:flex;flex-direction:column;gap:10px;
}
.fc-btn{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--brand),#2E7BFF);box-shadow:0 10px 26px rgba(11,92,255,.34);
  transition:all .3s var(--ease);position:relative;
}
.fc-btn:hover{transform:translateY(-3px) scale(1.04)}
.fc-btn--wa{background:linear-gradient(135deg,#00C48C,#00A97A);box-shadow:0 10px 26px rgba(0,196,140,.32)}
.fc-btn .tip{
  position:absolute;right:64px;top:50%;transform:translateY(-50%) translateX(8px);
  background:var(--ink-2);color:#fff;font-size:13px;padding:8px 14px;border-radius:8px;white-space:nowrap;
  opacity:0;visibility:hidden;transition:all .28s var(--ease);box-shadow:var(--shadow);
}
.fc-btn:hover .tip{opacity:1;visibility:visible;transform:translateY(-50%)}
.backtop{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);color:var(--text-2);box-shadow:var(--shadow-sm);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s var(--ease);
}
.backtop.show{opacity:1;visibility:visible;transform:none}
.backtop:hover{color:var(--brand);border-color:var(--brand)}

/* 底部热线条（移动端） */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:820;display:none;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(16,32,64,.08);
  padding:10px 14px;gap:10px;
}
.mobile-bar a{flex:1;height:44px;border-radius:999px;display:flex;align-items:center;justify-content:center;gap:6px;font-size:14px;font-weight:600}
.mobile-bar .mb-1{background:linear-gradient(120deg,var(--brand),#2E7BFF);color:#fff}
.mobile-bar .mb-2{border:1px solid #CFDDFB;color:var(--brand)}

/* ============================ 动效 ============================ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
.reveal.d5{transition-delay:.4s}.reveal.d6{transition-delay:.48s}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ============================ 响应式 ============================ */
@media (max-width:1180px){
  .nav > li > a{padding:10px 11px;font-size:14.5px}
  .hotline{display:none}
}
@media (max-width:1024px){
  .nav,.header-actions{display:none}
  .burger{display:block;margin-left:auto}
  .mnav{display:block}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .honor-grid{grid-template-columns:repeat(2,1fr)}
  .office-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sol-card{grid-template-columns:1fr}
  .sol-card:nth-child(even) .sol-media{order:0}
  .sol-media{min-height:220px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .contact-wrap{grid-template-columns:1fr;gap:36px}
  .about-art .float-card{left:16px;bottom:-20px}
}
@media (max-width:860px){
  .topbar{display:none}
  .section{padding:68px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero{padding-top:64px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stats > div:nth-child(2){border-right:0}
  .hero-stats > div:nth-child(1),.hero-stats > div:nth-child(2){border-bottom:1px solid var(--line-dark)}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .sol-info{padding:32px 26px}
  .sol-points{grid-template-columns:1fr}
  .arch{padding:36px 22px}
  .arch-layer{grid-template-columns:1fr;gap:10px}
  .cta{padding:44px 26px}
  .fixed-contact{right:12px;bottom:78px}
  .fixed-contact .fc-btn:not(.fc-btn--top){width:46px;height:46px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .honor-grid,.office-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .hero .lead{font-size:15.5px}
  .hero-actions .btn{flex:1;min-width:140px}
  .sec-head{margin-bottom:38px}
  .form-card{padding:24px}
  .form-row{grid-template-columns:1fr}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
  .case-card{aspect-ratio:16/10}
  .news-card{flex-direction:column;gap:14px}
  .news-date{width:56px;height:56px}
  .fixed-contact{bottom:74px}
  .backtop{display:none}
}

/* ==========================================================================
   v2 · 多语言 / 研发实力 / 服务网络 / FAQ / 科技感增强
   ========================================================================== */

/* ---------- 语言切换 ---------- */
.lang-switch{
  display:inline-flex;align-items:center;gap:2px;padding:3px;border-radius:999px;
  background:var(--bg-soft-2);border:1px solid var(--line);
}
.lang-btn{
  min-width:34px;height:28px;padding:0 10px;border-radius:999px;
  display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;
  color:var(--text-2);transition:all .25s var(--ease);
}
.lang-btn:hover{color:var(--brand)}
.lang-btn.active{
  background:linear-gradient(120deg,var(--brand),#2E7BFF);color:#fff;
  box-shadow:0 4px 12px rgba(11,92,255,.28);
}
.lang-m{
  display:flex;align-items:center;gap:10px;margin:16px 0 4px;padding:14px 16px;
  border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--bg-soft);
  font-size:15px;font-weight:600;color:var(--brand);
}
.lang-m svg{color:var(--brand)}

/* ---------- 研发与智造实力 ---------- */
.rd-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.rd-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line-dark);border:1px solid var(--line-dark);border-radius:var(--radius);overflow:hidden;margin-top:30px}
.rd-stats > div{background:rgba(255,255,255,.04);padding:22px 20px}
.rd-stats .num{font-size:30px;font-weight:800;line-height:1.1;letter-spacing:-.02em;background:linear-gradient(120deg,#fff,#8FB6FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.rd-stats .num i{font-style:normal;font-size:.5em;margin-left:3px}
.rd-stats .lbl{margin-top:6px;font-size:13.5px;color:var(--on-dark-2)}
.rd-points{margin-top:28px;display:grid;gap:12px}
.rd-points li{display:flex;gap:11px;font-size:15px;color:var(--on-dark-2);line-height:1.65}
.rd-points .tick{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;margin-top:3px;
  background:linear-gradient(135deg,var(--cyan),var(--brand));color:#fff;
  display:grid;place-items:center;font-size:11px;font-weight:700;
}
.rd-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-dark)}
.rd-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;opacity:.92}
.rd-visual .scan{
  position:absolute;left:0;right:0;height:2px;top:0;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  box-shadow:0 0 18px rgba(0,211,255,.8);
  animation:scanY 4.6s var(--ease) infinite;
}
@keyframes scanY{0%{transform:translateY(0);opacity:0}10%{opacity:1}90%{opacity:1}100%{transform:translateY(320px);opacity:0}}
.rd-visual .hud{
  position:absolute;left:16px;bottom:16px;right:16px;
  display:flex;justify-content:space-between;gap:10px;font-size:12px;color:#9FC6FF;
  background:rgba(7,14,32,.66);border:1px solid var(--line-dark);border-radius:10px;padding:10px 14px;
  backdrop-filter:blur(6px);
}

/* 认证徽章墙 */
.cert-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.cert{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:8px;
  font-size:13px;font-weight:600;color:var(--on-dark);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  transition:all .3s var(--ease);
}
.cert:hover{border-color:rgba(0,211,255,.5);color:#fff;transform:translateY(-2px)}
.cert i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}

/* ---------- 服务网络（抽象拓扑，非地图） ---------- */
.net-wrap{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(160deg,#F7F9FE,#E9F0FB);border:1px solid var(--line);
  padding:34px 28px;
}
.net-wrap::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(11,92,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(11,92,255,.06) 1px,transparent 1px);
  background-size:30px 30px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 85%);
  -webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 85%);
}
.net-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.net-svg{width:100%;height:auto;display:block}
.net-node circle.core{fill:var(--brand)}
.net-node circle.halo{fill:rgba(11,92,255,.18);animation:pulse 2.8s var(--ease-out) infinite}
.net-node.core-hub circle.core{fill:var(--violet);r:9}
.net-line{stroke:rgba(11,92,255,.28);stroke-width:1;stroke-dasharray:4 5;animation:dash 12s linear infinite}
@keyframes dash{to{stroke-dashoffset:-180}}
@keyframes pulse{0%{r:8;opacity:.55}70%{r:20;opacity:0}100%{r:20;opacity:0}}
.net-node text{font-size:11px;fill:var(--text-2);font-weight:600}
.net-hub text{font-size:12px;fill:var(--text);font-weight:800}
.net-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.net-city{
  display:flex;align-items:center;gap:9px;padding:11px 14px;border-radius:10px;
  background:#fff;border:1px solid var(--line);font-size:14px;transition:all .3s var(--ease);
}
.net-city:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);border-color:#CFDDFB}
.net-city b{font-weight:600}
.net-city span{font-size:12.5px;color:var(--text-3)}
.net-city i{width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--cyan));flex-shrink:0}
.net-metrics{margin-top:22px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.net-metric{padding:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);text-align:center}
.net-metric b{display:block;font-size:26px;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.net-metric span{font-size:13px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:background .25s var(--ease);
}
.faq-q:hover{background:var(--bg-soft)}
.faq-q .ic{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand);font-size:16px;line-height:1;
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-item.open .faq-q{color:var(--brand)}
.faq-item.open .faq-q .ic{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a p{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- 客户行业 chip 墙 ---------- */
.ind-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.ind-row span{
  font-size:13px;padding:6px 13px;border-radius:7px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:var(--on-dark-2);
}
.ind-row--light span{background:#fff;border:1px solid var(--line);color:var(--text-2)}

/* ---------- 表格（参数对比，利于 SEO 抓取） ---------- */
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec-table th,.spec-table td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:left}
.spec-table thead th{background:var(--bg-soft);font-weight:700;color:var(--text)}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table td:first-child{font-weight:600;color:var(--text)}

@media (max-width:1024px){
  .rd-grid{grid-template-columns:1fr;gap:36px}
  .net-inner{grid-template-columns:1fr;gap:28px}
}
@media (max-width:640px){
  .rd-stats{grid-template-columns:1fr}
  .net-list{grid-template-columns:1fr}
  .net-metrics{grid-template-columns:1fr}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .lang-switch{display:none}
}