/* ============================================================
   ANGSTROM · 昂斯创 — Light Engineering Design System v5.1
   明亮 · 大气 · 高级工程质感 · 无外部依赖
   ============================================================ */

:root{
  --bg:#ffffff;
  --bg-soft:#f5f8fc;         /* 浅灰蓝分节 */
  --bg-tint:#ecf3fa;         /* 更明显的蓝tint */
  --line:#e3eaf3;
  --line-strong:#cdd9e8;
  --ink:#152a42;             /* 深海军蓝正文标题 */
  --ink2:#46586e;            /* 次级文本 */
  --ink3:#7b8a9c;            /* 弱化文本 */
  --blue:#0f6fbe;            /* 主品牌蓝 */
  --blue-deep:#0b4f8a;
  --cyan:#28a7dd;
  --blue-soft:#e3f0fb;
  --grad:linear-gradient(120deg,#1279cc 0%,#28a7dd 100%);
  --navy:#0d2036;            /* footer / CTA 深色锚点 */
  --r:16px;
  --maxw:1200px;
  --shadow-sm:0 1px 3px rgba(21,42,66,.06),0 6px 18px -8px rgba(21,42,66,.08);
  --shadow-md:0 4px 10px rgba(21,42,66,.06),0 20px 44px -18px rgba(21,42,66,.16);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SF Mono",Consolas,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.8;font-size:16px;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
::selection{background:rgba(40,167,221,.25)}

.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}
@media(max-width:640px){.container{padding:0 20px}}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--blue);color:#fff;padding:8px 16px;z-index:200;border-radius:0 0 8px 0;font-weight:600}
.skip-link:focus{left:0}

/* ---------- 标签与标题 ---------- */
.k{font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);
  display:inline-flex;align-items:center;gap:10px}
.k::before{content:"";width:26px;height:2px;background:var(--grad);border-radius:2px}
.k.bare::before{display:none}
.k.dim{color:var(--ink3)}
.k.dim::before{background:var(--line-strong)}

h1,h2,h3{font-weight:700;line-height:1.3;letter-spacing:.005em}
.h-display{font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.2}
.h-sec{font-size:clamp(1.5rem,2.9vw,2.15rem);margin:14px 0 16px}
.lead{color:var(--ink2);font-size:1.06rem;max-width:46em}
.num-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.95rem;
  padding:13px 27px;border-radius:999px;transition:all .25s ease;cursor:pointer;border:1px solid transparent}
.btn .ar{transition:transform .25s}
.btn:hover .ar{transform:translate(3px,-3px)}
.btn-pri{background:var(--grad);color:#fff;box-shadow:0 8px 22px -8px rgba(18,121,204,.55)}
.btn-pri:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft)}
.btn-sm{padding:9px 19px;font-size:.88rem}

.textlink{color:var(--blue);font-weight:600;display:inline-flex;gap:7px;align-items:center;transition:gap .2s}
.textlink:hover{gap:11px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:76px}
.brand{display:flex;align-items:center;gap:13px;flex-shrink:0}
.brand-logo{width:46px;height:46px;border-radius:12px;background:#fff;display:grid;place-items:center;padding:5px;
  border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.brand-copy{display:flex;flex-direction:column;line-height:1.15}
.brand-copy strong{font-size:1.04rem;letter-spacing:.1em;color:var(--ink)}
.brand-copy strong b{color:var(--blue);font-weight:700;margin-left:6px}
.brand-copy span{font-size:.6rem;letter-spacing:.26em;color:var(--ink3);margin-top:3px;text-transform:uppercase}
.desktop-nav{display:flex;gap:2px;margin-left:auto;align-items:center}
.desktop-nav a{padding:9px 13px;border-radius:10px;font-size:.95rem;color:var(--ink2);transition:all .2s;position:relative;font-weight:500}
.desktop-nav a:hover{color:var(--blue);background:var(--blue-soft)}
.desktop-nav a.on{color:var(--blue);font-weight:600}
.desktop-nav a.on::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2.5px;background:var(--grad);border-radius:2px}
.header-cta{flex-shrink:0}
.nav-toggle{display:none;margin-left:auto;background:#fff;border:1px solid var(--line-strong);color:var(--ink);
  width:44px;height:44px;border-radius:12px;font-size:1.1rem;cursor:pointer}
.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:15px 28px;border-bottom:1px solid var(--line);color:var(--ink2)}
@media(max-width:1080px){.desktop-nav,.header-cta{display:none}.nav-toggle{display:block}}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--bg-tint) 0%,#f9fbfe 70%,#fff 100%)}
.hero::before{content:"";position:absolute;pointer-events:none;width:760px;height:760px;right:-200px;top:-320px;border-radius:50%;
  background:radial-gradient(circle,rgba(40,167,221,.14),transparent 62%)}
.hero::after{content:"";position:absolute;pointer-events:none;width:520px;height:520px;left:-220px;bottom:-320px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,121,204,.09),transparent 60%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;padding:80px 0}
.hero-copy .h-display{margin:20px 0 22px}
.hero-copy .lead{margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
@media(max-width:960px){.hero-inner{grid-template-columns:1fr;padding:52px 0;gap:38px}}

/* ---------- 图片卡 ---------- */
.plate{position:relative;background:#fff;border-radius:var(--r);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-md)}
.plate-bar{display:flex;justify-content:space-between;align-items:center;padding:11px 18px;
  background:linear-gradient(180deg,#f8fafd,#f1f6fb);border-bottom:1px solid var(--line);
  font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600}
.plate-bar .l{color:var(--blue)}
.plate-bar .r{color:var(--ink3)}
.plate-body{padding:28px;display:grid;place-items:center;min-height:240px;background:
  radial-gradient(ellipse at 50% 40%,#ffffff 40%,#f7fafc 100%)}
.plate-body img{max-height:430px;width:auto;object-fit:contain;filter:drop-shadow(0 18px 26px rgba(21,42,66,.14))}
.plate .corner{display:none}
.plate figcaption{padding:13px 18px;font-size:.88rem;color:var(--ink2);border-top:1px solid var(--line);background:#fbfdfe}

/* 照片类图片容器 */
.frame{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);background:#fff}
.frame img{width:100%;object-fit:cover}

/* ---------- Section ---------- */
.sec{padding:72px 0;position:relative}
.sec.alt{background:var(--bg-soft)}
.sec.hairline{border-top:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .k{justify-content:center}
@media(max-width:640px){.sec{padding:60px 0}}

/* ---------- 统计条 ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 26px 22px;box-shadow:var(--shadow-sm)}
.stat b{font-size:clamp(1.6rem,2.7vw,2.2rem);font-weight:800;display:block;letter-spacing:.01em}
.stat span{color:var(--ink2);font-size:.88rem;display:block;margin-top:6px;line-height:1.6}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:960px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;
  transition:border-color .3s,transform .3s,box-shadow .3s;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}
.card:hover{border-color:#b9d5ec;transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card .idx{font-size:.72rem;font-weight:700;letter-spacing:.16em;color:var(--blue);display:block;margin-bottom:13px;text-transform:uppercase}
.card h3{font-size:1.14rem;margin-bottom:10px}
.card p{color:var(--ink2);font-size:.94rem}
.card.linked::after{content:"→";position:absolute;right:24px;top:24px;color:var(--line-strong);transition:color .3s,transform .3s;font-weight:600}
.card.linked:hover::after{color:var(--blue);transform:translateX(3px)}

/* ---------- 产品行 ---------- */
.prow{display:grid;grid-template-columns:380px 1fr;gap:40px;align-items:center;
  border:1px solid var(--line);border-radius:20px;background:#fff;padding:28px;
  transition:border-color .3s,transform .3s,box-shadow .3s;box-shadow:var(--shadow-sm)}
.prow:hover{border-color:#b9d5ec;transform:translateY(-4px);box-shadow:var(--shadow-md)}
.prow .plate{box-shadow:none;border:1px solid var(--line)}
.prow .plate-body{min-height:210px;padding:18px}
.prow .plate-body img{max-height:260px}
.prow h3{font-size:1.4rem;margin:8px 0 10px}
.prow p{color:var(--ink2);font-size:.96rem;margin-bottom:16px}
.prow .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
@media(max-width:860px){.prow{grid-template-columns:1fr}}
.prow-mini{grid-template-columns:200px 1fr;padding:22px}
@media(max-width:640px){.prow-mini{grid-template-columns:1fr}}

.tag{font-size:.78rem;padding:5px 13px;border-radius:999px;border:1px solid var(--line);color:var(--ink2);background:var(--bg-soft);font-weight:500}
.tag.cy{border-color:#bfe0f5;color:var(--blue);background:var(--blue-soft)}

/* ---------- 规格表 ---------- */
.spec-table{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.spec-row{display:grid;grid-template-columns:280px 1fr;border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:0}
.spec-row:nth-child(odd){background:#f8fbfd}
.spec-row dt{padding:16px 24px;color:var(--ink3);font-size:.9rem}
.spec-row dd{padding:16px 24px;font-size:.93rem;color:var(--ink);font-weight:600;border-left:1px solid var(--line)}
@media(max-width:720px){.spec-row{grid-template-columns:1fr}.spec-row dd{border-left:0;padding-top:0}}

/* ---------- 清单 ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(max-width:720px){.checklist{grid-template-columns:1fr}}
.checklist li{display:flex;gap:13px;align-items:flex-start;background:#fff;
  border:1px solid var(--line);border-radius:13px;padding:15px 18px;font-size:.94rem;color:var(--ink2);box-shadow:var(--shadow-sm)}
.checklist li::before{content:"✓";color:#fff;font-weight:700;flex-shrink:0;
  width:22px;height:22px;background:var(--grad);border-radius:50%;display:grid;place-items:center;font-size:.72rem;margin-top:3px}

/* ---------- 长文 ---------- */
.prose{max-width:820px}
.prose p{color:var(--ink2);margin-bottom:1.15em;font-size:1.02rem}
.prose p strong{color:var(--ink)}
.prose p:first-of-type{color:var(--ink);font-size:1.1rem}

/* ---------- 特性行 ---------- */
.feat{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:22px 0;border-top:1px solid var(--line)}
.feat:last-child{border-bottom:1px solid var(--line)}
.feat .no{font-size:1.35rem;font-weight:800;color:#c3d4e6;padding-top:2px}
.feat h3{font-size:1.2rem;margin-bottom:9px}
.feat p{color:var(--ink2);font-size:.98rem;max-width:52em}
@media(max-width:640px){.feat{grid-template-columns:1fr;gap:8px}}

/* 图文交替特性 */
.media-feat{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0}
.media-feat.rev .mf-media{order:2}
.media-feat + .media-feat{border-top:1px solid var(--line)}
.media-feat .no{font-size:.8rem;font-weight:700;letter-spacing:.16em;color:var(--blue);text-transform:uppercase;display:block;margin-bottom:12px}
.media-feat h3{font-size:1.42rem;margin-bottom:12px}
.media-feat p{color:var(--ink2);font-size:1rem;max-width:34em}
@media(max-width:900px){.media-feat{grid-template-columns:1fr;gap:26px}.media-feat.rev .mf-media{order:0}}

/* ---------- 引用 ---------- */
.quote-band{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:var(--r);
  padding:42px 48px;position:relative;box-shadow:var(--shadow-sm)}
.quote-band blockquote{font-size:1.16rem;line-height:1.9;color:var(--ink);max-width:56em}
.quote-band .who{margin-top:20px;display:flex;flex-direction:column;gap:2px}
.quote-band .who b{color:var(--blue)}
.quote-band .who span{color:var(--ink3);font-size:.88rem}
@media(max-width:640px){.quote-band{padding:30px 26px}}

.qcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;display:flex;flex-direction:column;
  transition:transform .3s,box-shadow .3s;box-shadow:var(--shadow-sm)}
.qcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.qcard .mark{font-family:Georgia,serif;font-size:2.8rem;line-height:1;color:var(--cyan)}
.qcard blockquote{color:var(--ink2);font-size:.97rem;margin:8px 0 20px;flex:1}
.qcard .who b{display:block;color:var(--ink)}
.qcard .who span{color:var(--ink3);font-size:.84rem}
.qcard .tagline{font-size:.7rem;letter-spacing:.16em;color:var(--blue);text-transform:uppercase;font-weight:700;margin-bottom:4px}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;gap:9px;align-items:center;padding:20px 0 0;font-size:.87rem;color:var(--ink3);position:relative;z-index:3}
.crumbs a:hover{color:var(--blue)}
.crumbs .sep{opacity:.55}
.crumbs b{color:var(--ink2);font-weight:500}

/* ---------- 页内锚点 ---------- */
.subnav{position:sticky;top:76px;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.subnav-inner{display:flex;gap:6px;overflow-x:auto}
.subnav a{padding:15px 16px;font-size:.92rem;color:var(--ink3);white-space:nowrap;border-bottom:2.5px solid transparent;transition:color .2s;font-weight:500}
.subnav a:hover,.subnav a.on{color:var(--blue);border-bottom-color:var(--blue)}

/* ---------- 图库 ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.gallery{grid-template-columns:1fr}}
.gallery .plate{display:flex;flex-direction:column}
.gallery .plate .plate-body{min-height:160px;padding:14px;flex:1}
.gallery .plate .plate-body img{max-height:190px}

/* ---------- CTA ---------- */
.cta-band{position:relative;border-radius:24px;overflow:hidden;padding:64px 56px;
  background:linear-gradient(120deg,var(--navy) 0%,#123a5e 60%,#0f4a7a 100%);color:#fff}
.cta-band::after{content:"";position:absolute;right:-140px;bottom:-240px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(40,167,221,.35),transparent 62%)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(1.4rem,2.6vw,2rem);max-width:20em;color:#fff}
.cta-inner p{color:#b9cee0;margin-top:10px;max-width:40em}
.cta-band .k{color:#7fd0f2}
.cta-band .k::before{background:#7fd0f2}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.cta-band .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
@media(max-width:640px){.cta-band{padding:44px 28px}}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#c4d4e4;position:relative;overflow:hidden}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;padding:70px 0 50px}
@media(max-width:960px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}
.site-footer .brand-copy strong{color:#fff}
.site-footer .brand-copy span{color:#7f93a8}
.f-brand p{color:#8fa4b8;font-size:.92rem;margin-top:16px;max-width:30em}
.f-col h4{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:#7f93a8;margin-bottom:18px;font-weight:700}
.f-col a{display:block;padding:5px 0;color:#c4d4e4;font-size:.93rem;transition:color .2s}
.f-col a:hover{color:#7fd0f2}
.f-col p{color:#c4d4e4;font-size:.93rem;padding:5px 0}
.f-col p b{color:#fff;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;
  font-size:.82rem;color:#7f93a8}
.footer-bottom a:hover{color:#7fd0f2}
.f-watermark{position:absolute;right:-24px;bottom:-56px;font-weight:800;font-size:11rem;color:rgba(255,255,255,.03);
  pointer-events:none;user-select:none;line-height:1}

/* ---------- 首页 ---------- */
.home-hero .hero-inner{padding:92px 0 84px}

.app-card{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);min-height:350px;
  display:flex;flex-direction:column;justify-content:flex-end;transition:transform .3s,box-shadow .3s;background:#fff;box-shadow:var(--shadow-sm)}
.app-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.app-card .bg{position:absolute;inset:0}
.app-card .bg img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.app-card:hover .bg img{transform:scale(1.04)}
.app-card .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0) 22%,rgba(255,255,255,.88) 62%,#ffffff 88%)}
.app-card .body{position:relative;z-index:2;padding:26px}
.app-card h3{font-size:1.28rem;margin:8px 0 8px}
.app-card p{color:var(--ink2);font-size:.93rem}

.uni-wall{display:flex;flex-wrap:wrap;gap:10px}
.uni-wall span{padding:9px 19px;border:1px solid var(--line);border-radius:999px;color:var(--ink2);font-size:.9rem;
  background:#fff;transition:all .3s;box-shadow:var(--shadow-sm)}
.uni-wall span:hover{border-color:var(--blue);color:var(--blue)}

/* ---------- 表单 ---------- */
.form-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:40px;box-shadow:var(--shadow-md)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}.form-panel{padding:26px}}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:.89rem;color:var(--ink2);font-weight:500}
.field input,.field select,.field textarea{
  background:#f8fafc;border:1px solid var(--line-strong);border-radius:11px;
  padding:12px 15px;color:var(--ink);font-family:var(--font);font-size:.95rem;transition:all .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);background:#fff;
  box-shadow:0 0 0 3px rgba(18,121,204,.12)}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:.8rem;color:var(--ink3);margin-top:16px}
.hp-field{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}
.form-status{margin-top:16px;padding:13px 15px;border-radius:10px;font-size:.9rem;line-height:1.55}
.form-status.form-ok{color:#17643a;background:#edf9f2;border:1px solid #bde8cd}
.form-status.form-error{color:#9a2f2f;background:#fff3f3;border:1px solid #efc6c6}
.form-panel button[type="submit"]:disabled{cursor:wait;opacity:.68;transform:none;box-shadow:none}

/* ---------- 新闻 ---------- */
.news-row{display:grid;grid-template-columns:130px 1fr auto;gap:26px;align-items:baseline;
  padding:26px 10px;border-bottom:1px solid var(--line);transition:background .2s;border-radius:10px}
.news-row:hover{background:var(--bg-soft)}
.news-row time{font-size:.85rem;color:var(--ink3);letter-spacing:.03em}
.news-row h3{font-size:1.08rem;font-weight:600}
.news-row p{color:var(--ink3);font-size:.9rem;margin-top:5px}
.news-row .ar{color:var(--line-strong);font-weight:600}
.news-row:hover .ar,.news-row:hover h3{color:var(--blue)}
@media(max-width:640px){.news-row{grid-template-columns:1fr;gap:6px}}

.article{max-width:780px;margin:0 auto}
.article .meta{font-size:.84rem;color:var(--ink3);letter-spacing:.06em;margin-bottom:18px}
.article h1{font-size:clamp(1.6rem,3.4vw,2.4rem);margin-bottom:26px}
.article p{color:var(--ink2);margin-bottom:1.2em;font-size:1.02rem}
.article h2{font-size:1.35rem;margin:38px 0 14px}
.article img{border-radius:var(--r);margin:26px 0;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.article a{color:var(--blue)}

/* ---------- 两栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split.rev .media{order:-1}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:36px}.split.rev .media{order:0}}

/* ---------- 显现动画 ---------- */
.rv{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---------- 杂项 ---------- */
.divider-label{display:flex;align-items:center;gap:18px;color:var(--ink3);
  font-size:.76rem;letter-spacing:.18em;text-transform:uppercase;font-weight:700;margin:0 0 34px}
.divider-label::after{content:"";flex:1;height:1px;background:var(--line)}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-40{margin-top:40px}.mt-56{margin-top:56px}
.mb-24{margin-bottom:24px}.mb-40{margin-bottom:40px}
.center{text-align:center}

/* ============ v5.2 追加：轮播 / FAQ / 对比表 / 图集 ============ */

/* ---------- 首页轮播 ---------- */
.carousel{position:relative}
.carousel .slide{display:none}
.carousel .slide.on{display:grid;animation:fadeSlide .6s ease}
@keyframes fadeSlide{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.carousel-nav{position:relative;z-index:3;display:flex;align-items:center;gap:18px;padding:0 0 40px}
.carousel-nav .dots{display:flex;gap:8px}
.carousel-nav .dots button{width:34px;height:5px;border-radius:3px;border:0;background:var(--line-strong);cursor:pointer;transition:all .3s;padding:0}
.carousel-nav .dots button.on{background:var(--grad);width:52px}
.carousel-nav .arr{width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:#fff;
  color:var(--ink2);cursor:pointer;font-size:1rem;transition:all .2s;display:grid;place-items:center}
.carousel-nav .arr:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft)}
.carousel-nav .idx{font-size:.85rem;color:var(--ink3);letter-spacing:.1em}
.carousel-nav .idx b{color:var(--blue)}

/* ---------- 答案卡（GEO 摘要） ---------- */
.answer-box{background:linear-gradient(120deg,#eef6fd,#f6fafd);border:1px solid #d7e7f5;border-left:4px solid var(--blue);
  border-radius:var(--r);padding:26px 30px;margin-top:-8px}
.answer-box .ab-label{font-size:.76rem;font-weight:700;letter-spacing:.14em;color:var(--blue);text-transform:uppercase;display:block;margin-bottom:8px}
.answer-box p{color:var(--ink);font-size:1.03rem;line-height:1.85;max-width:none}

/* ---------- FAQ ---------- */
.faq{max-width:900px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .3s}
.faq details[open]{border-color:#b9d5ec}
.faq summary{cursor:pointer;padding:19px 24px;font-weight:600;font-size:1.02rem;color:var(--ink);
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;font-weight:400;color:var(--blue);transition:transform .3s;flex-shrink:0}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-a{padding:0 24px 20px;color:var(--ink2);font-size:.97rem;line-height:1.85}

/* ---------- 对比表 ---------- */
.cmp-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-sm);background:#fff}
table.cmp{width:100%;border-collapse:collapse;min-width:760px;font-size:.92rem}
table.cmp th,table.cmp td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.cmp thead th{background:linear-gradient(180deg,#f2f8fd,#e9f2fa);color:var(--ink);font-size:.95rem;white-space:nowrap}
table.cmp thead th:first-child{border-radius:0}
table.cmp tbody th{color:var(--ink3);font-weight:500;white-space:nowrap;background:#fafcfe}
table.cmp td{color:var(--ink2)}
table.cmp td b{color:var(--ink)}
table.cmp tbody tr:last-child th,table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp td a{color:var(--blue);font-weight:600}

/* ---------- 设备图集横带 ---------- */
.mosaic{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
@media(max-width:1000px){.mosaic{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.mosaic{grid-template-columns:repeat(2,1fr)}}
.mosaic a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 12px 12px;text-align:center;
  transition:all .3s;box-shadow:var(--shadow-sm);display:block}
.mosaic a:hover{border-color:var(--blue);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.mosaic .mimg{height:110px;display:grid;place-items:center;margin-bottom:10px}
.mosaic img{max-height:110px;width:auto;object-fit:contain}
.mosaic span{font-size:.84rem;font-weight:600;color:var(--ink2)}
.mosaic a:hover span{color:var(--blue)}

/* ---------- 带图相关卡 ---------- */
.card.thumb{padding:0}
.card.thumb .t-img{height:170px;display:grid;place-items:center;background:
  radial-gradient(ellipse at 50% 45%,#ffffff 40%,#f3f7fb 100%);border-bottom:1px solid var(--line);padding:14px}
.card.thumb .t-img img{max-height:150px;width:auto;object-fit:contain}
.card.thumb .t-img.cover{padding:0}
.card.thumb .t-img.cover img{width:100%;height:100%;max-height:none;object-fit:cover}
.card.thumb .t-body{padding:24px 26px 26px}
.card.thumb::after{top:auto;bottom:22px}

/* ---------- 宽幅图片带 ---------- */
.banner-band{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md)}
.banner-band img{width:100%;height:340px;object-fit:cover}
.banner-band .cap{position:absolute;left:0;right:0;bottom:0;padding:40px 32px 18px;
  background:linear-gradient(180deg,transparent,rgba(13,32,54,.82));color:#fff;font-size:.95rem}
@media(max-width:640px){.banner-band img{height:220px}}

/* ---------- 流程时间线 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:step}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding:0 28px 0 0;margin-right:28px}
.step:not(:last-child)::after{content:"";position:absolute;right:0;top:24px;bottom:0;width:1px;background:var(--line)}
.step .s-no{width:48px;height:48px;border-radius:14px;background:var(--grad);color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:1.1rem;margin-bottom:16px;box-shadow:0 8px 18px -8px rgba(18,121,204,.5)}
.step h3{font-size:1.08rem;margin-bottom:8px}
.step p{color:var(--ink2);font-size:.92rem}

/* ============ v5.3 追加：新Logo / 悬浮导航 / 背景轮播首屏 / 子页首屏 ============ */

/* ---------- 新 logo ---------- */
.brand-mark{width:48px;height:48px;object-fit:contain;flex-shrink:0}
.site-footer .brand-tile{width:52px;height:52px;border-radius:12px;background:#fff;display:grid;place-items:center;padding:6px}

/* ---------- 悬浮下拉导航 ---------- */
.nav-item{position:relative}
.nav-item > a .dn{font-size:.62rem;margin-left:4px;color:var(--ink3);transition:transform .25s;display:inline-block}
.nav-item:hover > a .dn,.nav-item:focus-within > a .dn{transform:rotate(180deg);color:var(--blue)}
.nav-drop{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(10px);
  background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 60px -20px rgba(21,42,66,.28);
  padding:14px;opacity:0;visibility:hidden;transition:all .28s ease;z-index:120;
  display:grid;grid-template-columns:repeat(2,236px);gap:2px}
.nav-drop::before{content:"";position:absolute;top:-11px;left:0;right:0;height:12px}
.nav-item:hover .nav-drop,.nav-item:focus-within .nav-drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav-drop a{display:block;padding:10px 14px;border-radius:11px;transition:background .2s}
.nav-drop a:hover{background:var(--blue-soft)}
.nav-drop a b{display:block;font-size:.92rem;color:var(--ink);font-weight:600;line-height:1.4}
.nav-drop a:hover b{color:var(--blue)}
.nav-drop a span{display:block;font-size:.78rem;color:var(--ink3);line-height:1.45;margin-top:1px}
.nav-drop .drop-cta{grid-column:1/-1;margin-top:8px;padding:11px 14px;border-top:1px solid var(--line);border-radius:0;
  color:var(--blue);font-weight:600;font-size:.9rem}
.nav-drop .drop-cta:hover{background:none}
.nav-drop.wide{grid-template-columns:repeat(3,212px)}

/* ---------- 首屏：背景轮播 ---------- */
.bghero{position:relative;overflow:hidden;background:linear-gradient(180deg,#eef5fc,#fbfdff);border-bottom:1px solid var(--line)}
.bghero .bgs{position:absolute;inset:0;z-index:0}
.bghero .bgimg{position:absolute;inset:0;opacity:0;transition:opacity 1.1s ease}
.bghero .bgimg img{width:100%;height:100%;object-fit:contain;object-position:88% center;padding:44px 3% 44px 42%}
.bghero .bgimg.on{opacity:1}
.bghero .veil{position:absolute;inset:0;z-index:1;background:
  linear-gradient(90deg,rgba(243,248,253,.99) 0%,rgba(243,248,253,.96) 38%,rgba(243,248,253,.55) 58%,rgba(243,248,253,.06) 82%)}
.bghero .veil::after{content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(15,111,190,.10) 1px,transparent 1px);background-size:26px 26px;
  mask-image:linear-gradient(90deg,#000 0%,transparent 55%);-webkit-mask-image:linear-gradient(90deg,#000 0%,transparent 55%)}
.bghero-inner{position:relative;z-index:2;padding:88px 0 30px;max-width:640px}
.bghero-inner .lead{margin:22px 0 30px}
.kicker-chip{display:inline-flex;align-items:center;gap:9px;padding:8px 18px;border-radius:999px;
  background:#fff;border:1px solid #c9e0f3;box-shadow:var(--shadow-sm);
  font-size:.84rem;font-weight:600;color:var(--blue)}
.kicker-chip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad)}
.bghero h1{font-size:clamp(2rem,4.3vw,3.15rem);line-height:1.22;margin-top:20px}

/* 设备按钮组（联动轮播） */
.dev-chips{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:10px;padding:34px 0 46px;align-items:center}
.dev-chips .lab{font-size:.8rem;color:var(--ink3);font-weight:600;margin-right:6px;letter-spacing:.08em}
.dev-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;font-size:.92rem;font-weight:600;
  background:#fff;border:1px solid var(--line-strong);color:var(--ink2);transition:all .3s;box-shadow:var(--shadow-sm)}
.dev-chip:hover{border-color:var(--blue);color:var(--blue)}
.dev-chip.on{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 8px 20px -8px rgba(18,121,204,.55)}
.dev-chip .ar2{font-size:.8rem;opacity:.75}
@media(max-width:900px){
  .bghero .bgimg img{object-position:center 88%;padding:52% 6% 4%}
  .bghero .veil{background:linear-gradient(180deg,rgba(243,248,253,.99) 0%,rgba(243,248,253,.9) 46%,rgba(243,248,253,.2) 78%)}
  .bghero-inner{padding-top:56px}
}
@media(max-width:420px){
  .bghero h1{font-size:1.72rem;line-height:1.2;letter-spacing:-.025em}
}

/* ---------- 子页首屏升级 ---------- */
.hero .h-accent{width:64px;height:4px;border-radius:3px;background:var(--grad);margin:18px 0 18px}
.meta-chips{display:flex;flex-wrap:wrap;gap:8px;margin:-6px 0 30px}
.meta-chips span{font-size:.8rem;padding:6px 14px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--ink2);font-weight:500;box-shadow:var(--shadow-sm)}
.meta-chips span.hl{border-color:#bfe0f5;color:var(--blue);background:var(--blue-soft)}
.hero .brandline{display:flex;align-items:center;gap:10px;margin-top:26px;color:var(--ink3);font-size:.84rem}
.hero .brandline img{width:26px;height:26px;object-fit:contain}
.hero::after{background:radial-gradient(circle,rgba(18,121,204,.13),transparent 60%)}
.hero .hero-dots{position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(15,111,190,.09) 1px,transparent 1px);background-size:28px 28px;
  mask-image:radial-gradient(ellipse 60% 90% at 8% 10%,#000,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 60% 90% at 8% 10%,#000,transparent 70%)}

/* ============ v5.4 追加 ============ */
.nav-item{display:flex;align-items:center}
.desktop-nav > a, .nav-item > a{line-height:1.4;display:inline-flex;align-items:center}

/* 首屏事实数据点 */
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin:4px 0 30px}
.hero-facts .fact{background:#fff;border:1px solid var(--line);border-radius:13px;padding:12px 18px;box-shadow:var(--shadow-sm);min-width:120px}
.hero-facts .fact b{display:block;color:var(--blue);font-size:1.06rem;font-weight:800;line-height:1.35}
.hero-facts .fact span{display:block;font-size:.76rem;color:var(--ink3);margin-top:2px}

/* 核心能力紧凑卡片 */
.featgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:760px){.featgrid{grid-template-columns:1fr}}
.featgrid .fcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;box-shadow:var(--shadow-sm);
  display:flex;gap:16px;align-items:flex-start;transition:border-color .3s}
.featgrid .fcard:hover{border-color:#b9d5ec}
.featgrid .fno{flex-shrink:0;width:34px;height:34px;border-radius:10px;background:var(--blue-soft);color:var(--blue);
  display:grid;place-items:center;font-weight:800;font-size:.86rem}
.featgrid h3{font-size:1.02rem;margin-bottom:5px}
.featgrid p{color:var(--ink2);font-size:.9rem;line-height:1.7}

/* 用户头像 */
.avatar{width:46px;height:46px;border-radius:50%;flex-shrink:0;border:2px solid #fff;box-shadow:var(--shadow-sm)}
.who-row{display:flex;gap:12px;align-items:center}
.who-row .who{margin:0}

/* 新闻缩略图 */
.news-row.thumbed{grid-template-columns:150px 110px 1fr auto;align-items:center}
.news-row .n-thumb{width:110px;height:72px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#fff}
.news-row .n-thumb img{width:100%;height:100%;object-fit:cover}
@media(max-width:640px){.news-row.thumbed{grid-template-columns:1fr}.news-row .n-thumb{width:100%;height:150px}}