/* ==========================================================================
   YivaVision 亿威视觉 — Shared Stylesheet
   中式企业官网风格 · 深蓝企业色 + 红色强调（对标 heyshinetc.com）
   结构：顶部通栏 / 白底导航 / 全宽Banner / 双语板块标题 / 卡片网格 / 深蓝页脚
   ========================================================================== */

:root{
  --blue:#0d4ba2; --blue-d:#0a2e6e; --navy:#0a1f42; --blue-l:#eaf1fb;
  --red:#d9262c; --red-d:#b71c22;
  --bg:#ffffff; --bg2:#f5f7fa; --line:#e3e8f0;
  --txt:#1f2937; --mut:#6b7280;
  --grad:linear-gradient(135deg,#0d4ba2,#1560c0);
  --shadow:0 2px 10px rgba(10,46,110,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",-apple-system,sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}

/* ------------------------------------------------------------ 顶部通栏 */
.topbar{background:var(--navy);color:#c7d4ea;font-size:12.5px;position:fixed;top:0;left:0;right:0;z-index:60}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:34px}
.topbar span{white-space:nowrap}
.topbar b{color:#fff;font-weight:600;margin:0 4px}
@media(max-width:720px){.topbar .tb-r{display:none}}
@media(max-width:420px){.topbar .tb-l{font-size:11px}}
.lang-sw{display:flex;align-items:center;gap:2px}
.lang-sw a{padding:2px 10px;color:#c7d4ea;font-size:12px;border-radius:3px;transition:.15s}
.lang-sw a:hover{color:#fff;background:rgba(255,255,255,.12)}
.lang-sw a.on{background:rgba(255,255,255,.18);color:#fff;font-weight:700}
.lang-sw .sep{color:#5b6f9a;margin:0 2px}

/* ---------------------------------------------------------------- 导航 */
header.site-head{position:fixed;top:34px;left:0;right:0;z-index:55;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.logo-cn{display:flex;align-items:center;gap:12px;flex:none}
.logo-cn .mark{width:42px;height:42px;flex:none}
.logo-cn .t1{font-size:24px;font-weight:800;color:var(--blue-d);letter-spacing:2px;line-height:1.2}
.logo-cn .t2{font-size:11px;color:var(--mut);letter-spacing:3.5px;text-transform:uppercase}
.main-nav{display:flex;gap:4px;list-style:none;flex:1;justify-content:center}
.main-nav>li>a{display:block;padding:10px 16px;font-size:15.5px;font-weight:600;color:#374151;transition:.18s;border-bottom:3px solid transparent}
.main-nav>li>a:hover{color:var(--blue)}
.main-nav>li>a.active{color:var(--blue);border-bottom-color:var(--red)}
.hotline{flex:none;display:flex;flex-direction:column;align-items:flex-end;line-height:1.25}
.hotline .hl-l{font-size:12px;color:var(--mut)}
.hotline .hl-n{font-size:21px;font-weight:800;color:var(--red);font-family:Arial,sans-serif}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;color:var(--txt);font-size:20px;width:42px;height:38px;cursor:pointer}
@media(max-width:1080px){
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:6px 20px 14px;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav>li{border-bottom:1px solid var(--line)}
  .main-nav>li:last-child{border:0}
  .main-nav>li>a{padding:13px 4px}
  .hotline{display:none}
}
@media(max-width:720px){.logo-cn .t1{font-size:19px}.logo-cn .t2{font-size:9.5px}.logo-cn .mark{width:34px;height:34px}}

/* ------------------------------------------------------------- Banner */
.hero-banner{position:relative;margin-top:110px;background:linear-gradient(115deg,var(--navy) 0%,var(--blue-d) 45%,#1257b8 100%);color:#fff;overflow:hidden}
.hero-banner::before{content:"";position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none}
.hero-banner .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:30px;align-items:center;padding-top:66px;padding-bottom:66px}
.hero-slogan h1{font-size:clamp(28px,4vw,46px);font-weight:800;letter-spacing:1px;line-height:1.35;margin-bottom:16px;color:#fff}
.hero-slogan h1 em{font-style:normal;color:#8fc3ff}
.hero-slogan p{font-size:15.5px;color:#c9d9f2;max-width:560px;margin-bottom:30px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-btns .btn{border-radius:4px}
.hero-fig{position:relative;filter:drop-shadow(0 18px 38px rgba(0,10,30,.5))}
@media(max-width:880px){.hero-banner .wrap{grid-template-columns:1fr}.hero-fig{display:none}}

/* 子页横幅 */
.page-banner{margin-top:110px;background:linear-gradient(115deg,var(--navy),var(--blue-d));color:#fff;padding:52px 0;position:relative;overflow:hidden}
.page-banner::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px}
.page-banner h1{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:1px;position:relative}
.page-banner p{color:#c9d9f2;font-size:14.5px;margin-top:8px;position:relative}

/* --------------------------------------------------------------- 按钮 */
.btn{display:inline-block;padding:12px 30px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer;border:none;border-radius:4px}
.btn-pri{background:var(--red);color:#fff}
.btn-pri:hover{background:var(--red-d);transform:translateY(-2px);box-shadow:0 10px 22px rgba(217,38,44,.3)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-ghost:hover{background:#fff;color:var(--blue-d)}
.btn-sec{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn-sec:hover{background:var(--blue-l)}
.btn-sm{padding:9px 20px;font-size:13px}

/* ------------------------------------------------------------ 板块标题 */
section{padding:70px 0}
.sect-alt{background:var(--bg2)}
.sec-title{text-align:center;margin-bottom:46px}
.sec-title h2{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--txt);letter-spacing:2px;position:relative;display:inline-block;padding-bottom:14px}
.sec-title h2::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:46px;height:3px;background:var(--red)}
.sec-title .en{display:block;font-size:12px;color:#9aa6b8;letter-spacing:4px;text-transform:uppercase;margin-top:6px}
.sec-title p{color:var(--mut);font-size:14.5px;margin-top:14px;max-width:640px;margin-left:auto;margin-right:auto}
.more-link{display:block;text-align:center;margin-top:34px}
.more-link a{display:inline-block;color:var(--blue);font-weight:700;font-size:14.5px;border:1px solid var(--blue);padding:9px 30px;border-radius:4px;transition:.2s}
.more-link a:hover{background:var(--blue);color:#fff}

/* ------------------------------------------------------------ 公司简介 */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
@media(max-width:880px){.intro-grid{grid-template-columns:1fr}}
.intro-txt h3{font-size:22px;font-weight:800;margin-bottom:14px}
.intro-txt h3 i{font-style:normal;color:var(--red)}
.intro-txt p{font-size:14.5px;color:var(--mut);margin-bottom:12px;text-align:justify}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.stat{background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:6px;padding:22px 18px;text-align:center;box-shadow:var(--shadow)}
.stat .n{font-size:34px;font-weight:800;color:var(--blue);font-family:Arial,sans-serif;line-height:1.2}
.stat .n small{font-size:16px;font-weight:700}
.stat .l{font-size:13px;color:var(--mut);margin-top:4px}

/* ------------------------------------------------------------ 产品卡片 */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media(max-width:960px){.grid3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid3,.grid4{grid-template-columns:1fr}}
@media(max-width:880px){.grid2{grid-template-columns:1fr}}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.22s;display:flex;flex-direction:column;box-shadow:var(--shadow);position:relative}
.prod-card:hover{transform:translateY(-5px);border-color:rgba(13,75,162,.5);box-shadow:0 14px 30px rgba(10,46,110,.14)}
.prod-card .fig{background:linear-gradient(160deg,#f2f6fc,#e6eef9);border-bottom:1px solid var(--line);padding:20px;display:flex;align-items:center;justify-content:center;min-height:190px}
.prod-card .fig svg{width:100%;height:auto;max-height:170px}
.prod-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:4px}
.prod-card .name{font-size:17px;font-weight:800;color:var(--txt)}
.prod-card .name b{color:var(--blue)}
.prod-card .sub{font-size:13px;color:var(--mut)}
.prod-card .tagline{margin-top:8px;font-size:13px;color:var(--blue);font-weight:600}
.prod-card .specs{list-style:none;margin-top:10px;border-top:1px dashed var(--line);padding-top:10px;display:flex;flex-direction:column;gap:6px}
.prod-card .specs li{display:flex;justify-content:space-between;font-size:12.5px}
.prod-card .specs .k{color:var(--mut)}
.prod-card .specs .v{color:var(--txt);font-weight:600}
.prod-card .go{margin-top:14px;color:var(--red);font-weight:700;font-size:13.5px}
.prod-card:hover .go{text-decoration:underline}
.badge{position:absolute;top:0;right:0;background:var(--red);color:#fff;font-size:11px;font-weight:700;padding:5px 12px;border-bottom-left-radius:6px;letter-spacing:1px;z-index:2}

/* ------------------------------------------------------------ 优势板块 */
.adv-item{display:grid;grid-template-columns:120px 1fr;gap:24px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px;box-shadow:var(--shadow);transition:.2s}
.adv-item:hover{border-color:rgba(13,75,162,.45);box-shadow:0 12px 26px rgba(10,46,110,.12)}
.adv-item .no{font-size:56px;font-weight:800;color:transparent;-webkit-text-stroke:1.6px #b9c9e4;font-family:Arial,sans-serif;line-height:1}
.adv-item h3{font-size:18px;font-weight:800;margin-bottom:8px;color:var(--blue-d)}
.adv-item h3 span{font-size:12px;color:#9aa6b8;font-weight:600;letter-spacing:1.5px;margin-left:8px;text-transform:uppercase}
.adv-item p{font-size:14px;color:var(--mut);text-align:justify}
.adv-list{display:flex;flex-direction:column;gap:18px}
@media(max-width:640px){.adv-item{grid-template-columns:1fr}.adv-item .no{font-size:40px}}

/* --------------------------------------------------------- 行业应用(深蓝) */
.ind-sec{background:linear-gradient(160deg,var(--navy),var(--blue-d));color:#fff;position:relative;overflow:hidden}
.ind-sec::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px}
.ind-sec .sec-title h2{color:#fff}
.ind-sec .sec-title .en{color:#7d95bd}
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative}
@media(max-width:960px){.ind-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.ind-grid{grid-template-columns:1fr}}
.ind-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:6px;padding:22px 18px;transition:.2s}
.ind-card:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.42);transform:translateY(-4px)}
.ind-card .ic{font-size:28px;margin-bottom:10px}
.ind-card h3{font-size:15.5px;font-weight:700;margin-bottom:6px;color:#fff}
.ind-card p{font-size:12.5px;color:#a9bcd9;line-height:1.6}
.ind-card .more{display:inline-block;margin-top:10px;font-size:12.5px;color:#8fc3ff;font-weight:600}

/* ------------------------------------------------------------ 新闻卡片 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:880px){.news-grid{grid-template-columns:1fr}}
.news-card{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);border-color:rgba(13,75,162,.45)}
.news-card .fig{height:150px;background:linear-gradient(140deg,var(--blue-d),#1257b8);position:relative;display:flex;align-items:center;justify-content:center}
.news-card .fig .date{position:absolute;left:14px;bottom:-1px;background:#fff;border:1px solid var(--line);border-radius:4px;padding:4px 12px;text-align:center;line-height:1.25}
.news-card .fig .date b{display:block;font-size:20px;color:var(--red);font-family:Arial,sans-serif;font-weight:800}
.news-card .fig .date span{font-size:11px;color:var(--mut)}
.news-card .fig .ph{color:rgba(255,255,255,.85);font-size:13px;font-weight:600;letter-spacing:2px}
.news-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.news-card .cat{font-size:11.5px;color:var(--blue);font-weight:700;letter-spacing:1px}
.news-card h3{font-size:15.5px;font-weight:700;line-height:1.5}
.news-card p{font-size:13px;color:var(--mut);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-card .more{font-size:13px;color:var(--red);font-weight:600}
.news-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:34px;flex-wrap:wrap}
.news-tabs span{padding:8px 24px;border:1px solid var(--line);border-radius:4px;font-size:14px;font-weight:600;color:var(--mut);cursor:default;background:#fff}
.news-tabs span.on{background:var(--blue);border-color:var(--blue);color:#fff}

/* ------------------------------------------------------------ CTA 带 */
.cta-band{background:linear-gradient(115deg,var(--red-d),var(--red));color:#fff;text-align:center;padding:56px 0}
.cta-band h2{font-size:clamp(22px,3vw,32px);font-weight:800;letter-spacing:1px;margin-bottom:12px}
.cta-band p{color:#ffd9da;font-size:14.5px;margin-bottom:28px}

/* --------------------------------------------------------------- 页脚 */
footer{background:var(--navy);color:#b9c7de;font-size:13.5px}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding:52px 0 40px}
@media(max-width:960px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.foot-top{grid-template-columns:1fr}}
.foot-brand .logo-cn .t1{color:#fff}
.foot-brand .logo-cn .t2{color:#7d95bd}
.foot-brand>p{margin-top:14px;line-height:1.8;font-size:13px;color:#8fa3c4}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;padding-left:12px;border-left:3px solid var(--red);line-height:1.3}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.foot-col ul a{color:#8fa3c4;transition:.2s;font-size:13.5px}
.foot-col ul a:hover{color:#fff}
.foot-contact p{margin-bottom:9px;display:flex;gap:8px;align-items:baseline}
.foot-contact b{color:#fff}
.qr-row{display:flex;gap:14px;margin-top:16px}
.qr{width:86px;height:86px;background:#fff;border-radius:4px;display:flex;align-items:center;justify-content:center;flex-direction:column;color:var(--mut);font-size:10.5px;text-align:center;line-height:1.4}
.qr svg{width:44px;height:44px;margin-bottom:3px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#7d95bd}
.foot-bottom a:hover{color:#fff}

/* ---------------------------------------------------------- 面包屑 */
.crumbs-bar{background:var(--bg2);border-bottom:1px solid var(--line);padding:0}
.crumbs-bar .wrap{display:flex;justify-content:space-between;align-items:center;height:46px;font-size:13px}
.crumbs{color:var(--mut)}
.crumbs a{color:var(--mut)}
.crumbs a:hover{color:var(--blue)}
.crumbs .sep{margin:0 8px;color:#c3ccd9}
.crumbs .cur{color:var(--blue)}
.crumbs-bar .hotline-inline{color:var(--red);font-weight:700;font-size:13px}
@media(max-width:720px){.crumbs-bar .hotline-inline{display:none}}

/* ---------------------------------------------------------- 规格/详情 */
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;box-shadow:var(--shadow)}
.spec-table th,.spec-table td{padding:11px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}
.spec-table th{color:var(--mut);font-weight:500;width:32%;background:var(--bg2)}
.spec-table td{color:var(--txt);font-weight:600}
.spec-table tr:hover th{background:var(--blue-l)}
.spec-note{font-size:12px;color:var(--mut);padding:10px 4px 0}

.detail-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:42px;align-items:start}
@media(max-width:880px){.detail-grid{grid-template-columns:1fr}}
.detail-visual{background:linear-gradient(180deg,#f2f6fc,#fff);border:1px solid var(--line);border-radius:6px;padding:26px;position:sticky;top:130px;box-shadow:var(--shadow)}
.detail-visual .cap{text-align:center;font-size:12.5px;color:var(--mut);margin-top:12px}
.detail-body h1{font-size:clamp(24px,3.4vw,36px);letter-spacing:0}
.kv-strip{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 22px}
.kv-strip span{background:var(--blue-l);border:1px solid #c9dcf5;border-radius:4px;font-size:12.5px;font-weight:600;color:#334155;padding:6px 12px}
.kv-strip span b{color:var(--blue);font-weight:800}
.model-tabs{display:flex;gap:10px;margin:20px 0}
.model-tabs span{flex:1;text-align:center;background:var(--bg2);border:1px solid var(--line);border-radius:4px;padding:11px 10px;font-size:12.5px;font-weight:600;color:var(--mut)}
.model-tabs span b{display:block;color:var(--txt);font-size:14px;margin-bottom:2px}
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:40px}
.pager a{background:#fff;border:1px solid var(--line);border-radius:4px;padding:14px 20px;font-size:13px;color:var(--mut);transition:.2s;max-width:48%;box-shadow:var(--shadow)}
.pager a:hover{border-color:var(--blue);color:var(--blue)}
.pager b{display:block;color:var(--txt);font-size:14.5px;margin-bottom:2px}
.pager .next{text-align:right;margin-left:auto}
.accessory{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:4px;padding:15px 18px;align-items:flex-start;box-shadow:var(--shadow)}
.accessory .ic{font-size:22px;flex:none}
.accessory b{display:block;font-size:14px;margin-bottom:3px}
.accessory p{font-size:12.5px;color:var(--mut);line-height:1.55}

/* ------------------------------------------------------------ 解决方案 */
.sol-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:26px;box-shadow:var(--shadow);transition:.2s}
.sol-card:hover{border-color:rgba(13,75,162,.45);transform:translateY(-4px)}
.sol-card .ic{font-size:30px;margin-bottom:12px}
.sol-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.sol-card .tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.sol-card .tags span{background:var(--blue-l);color:var(--blue);font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:3px}
.sol-card p{font-size:13px;color:var(--mut);text-align:justify}
.sol-card .need{margin-top:12px;font-size:12.5px;color:var(--red);font-weight:600}

/* ------------------------------------------------------------ 技术支持/组装 */
.assembly-box{background:#fff;border:1px solid var(--line);border-radius:6px;padding:30px;display:grid;grid-template-columns:1.35fr 1fr;gap:28px;box-shadow:var(--shadow)}
@media(max-width:880px){.assembly-box{grid-template-columns:1fr}}
.assembly-stage{display:flex;align-items:center;justify-content:center;min-height:420px;position:relative;background:linear-gradient(180deg,#f2f6fc,#fff);border:1px solid var(--line);border-radius:4px;padding:10px}
.assembly-stage svg{width:100%;height:auto;max-height:520px}
.assembly-stage .asm-el{opacity:0;transform:translateY(-42px);transition:opacity .5s,transform .6s cubic-bezier(.22,.9,.3,1),stroke-dashoffset .9s ease}
.assembly-stage .asm-el.flat{transform:none}
.assembly-stage .asm-el.draw{stroke-dasharray:400;stroke-dashoffset:400;transform:none}
.assembly-stage .asm-el.installed{opacity:1;transform:none;stroke-dashoffset:0}
.assembly-stage .asm-el.active{filter:drop-shadow(0 0 7px rgba(13,75,162,.65))}
.steps{list-style:none;counter-reset:step;display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.steps button{counter-increment:step;display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:4px;padding:13px 16px;color:var(--mut);cursor:pointer;text-align:left;transition:.2s;font-family:inherit}
.steps button::before{content:counter(step);flex:none;width:28px;height:28px;border-radius:50%;border:1px solid #c3ccd9;background:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--mut)}
.steps button b{display:block;font-size:14px;color:var(--txt);font-weight:700;margin-bottom:2px}
.steps button small{font-size:12px;line-height:1.5;display:block}
.steps button:hover{border-color:var(--blue)}
.steps button.done{border-color:rgba(5,150,105,.4);background:#f0fdf4}
.steps button.done::before{content:"\2713";color:#059669;border-color:rgba(5,150,105,.4);background:#f0fdf4}
.steps button.cur{border-color:var(--blue);background:var(--blue-l);box-shadow:0 0 0 3px rgba(13,75,162,.1)}
.steps button.cur::before{background:var(--blue);color:#fff;border-color:transparent}
.assembly-nav{display:flex;gap:12px;margin-top:18px}
.assembly-nav .btn{flex:1;text-align:center}
#asm-detail{font-size:13.5px;color:var(--mut);line-height:1.8;background:var(--bg2);border:1px solid var(--line);border-radius:4px;padding:15px 18px;margin-top:16px}
#asm-detail b{color:var(--txt)}
.checklist{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(max-width:680px){.checklist{grid-template-columns:1fr}}
.checklist li{background:#fff;border:1px solid var(--line);border-radius:4px;padding:15px 18px;font-size:14px;box-shadow:var(--shadow)}
.checklist li b{display:block;margin-bottom:4px;color:var(--txt)}
.checklist li span{color:var(--mut);font-size:12.5px;line-height:1.5}
.checklist li .tick{color:#059669;margin-right:8px;font-weight:700}

/* ------------------------------------------------------------ 联系表单 */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:start}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr}}
.form-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:30px;box-shadow:var(--shadow)}
.form-card h3{font-size:18px;font-weight:800;margin-bottom:6px}
.form-card>p{font-size:13px;color:var(--mut);margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.form-row{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:15px}
.field label{font-size:12.5px;font-weight:600;color:var(--mut)}
.field label i{font-style:normal;color:var(--red)}
.field input,.field select,.field textarea{background:#fff;border:1px solid #cbd5e1;border-radius:4px;color:var(--txt);font-family:inherit;font-size:14px;padding:10px 13px;outline:none;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(13,75,162,.12)}
.field textarea{resize:vertical;min-height:110px}
.ch-side{display:flex;flex-direction:column;gap:16px}
.ch-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:20px 22px;box-shadow:var(--shadow)}
.ch-card h4{font-size:14.5px;font-weight:800;margin-bottom:10px;color:var(--txt);padding-left:10px;border-left:3px solid var(--red);line-height:1.4}
.ch-card .big{font-size:16.5px;font-weight:800;color:var(--blue);word-break:break-all}
.ch-card p{font-size:12.5px;color:var(--mut);margin-top:6px}
.channels{display:flex;gap:10px;flex-wrap:wrap}
.ch{background:var(--bg2);border:1px solid var(--line);border-radius:4px;padding:9px 18px;font-size:13.5px;font-weight:600;color:var(--mut);transition:.2s}
.ch:hover{color:var(--blue);border-color:var(--blue)}

/* -------------------------------------------------------------- 其他 */
.mt1{margin-top:12px}.mt2{margin-top:24px}.mt3{margin-top:40px}
.center{text-align:center}
.muted{color:var(--mut)}
.small{font-size:13px}
.note-box{background:#fffbeb;border:1px solid #fcd34d;border-radius:4px;padding:14px 18px;font-size:13px;color:#92400e;line-height:1.7}
.tag-pill{display:inline-block;font-size:12.5px;font-weight:600;color:var(--blue);background:var(--blue-l);border:1px solid #c9dcf5;padding:5px 16px;border-radius:3px;margin-bottom:16px}
.value-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:6px;padding:24px;box-shadow:var(--shadow)}
.value-card .ic{font-size:26px;margin-bottom:12px}
.value-card h3{font-size:16px;font-weight:800;margin-bottom:8px}
.value-card p{font-size:13px;color:var(--mut);line-height:1.7;text-align:justify}
.tl{list-style:none;position:relative;max-width:720px;margin:0 auto;padding-left:26px}
.tl::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl li{position:relative;padding:0 0 28px 20px}
.tl li::before{content:"";position:absolute;left:-25px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px var(--blue-l)}
.tl b{display:block;font-size:15px;margin-bottom:4px}
.tl p{font-size:13.5px;color:var(--mut)}
.float-top{position:fixed;right:22px;bottom:36px;z-index:50;width:46px;height:46px;border-radius:6px;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 8px 20px rgba(10,46,110,.35);opacity:0;pointer-events:none;transition:.25s}
.float-top.show{opacity:1;pointer-events:auto}
.float-top:hover{background:var(--blue-d)}