/* ============================================================
   爱知日博 2026 — Corporate Navy System（第四版）
   参考稿方向：企业深蓝 / 白底细边框卡片 / 深浅交替节奏
   约束：hero-lineup.jpg 底色为 #042F73（裁自原站 banner），
        产品图为白底去背 PNG（浅底 + multiply 是唯一正确用法）
   ============================================================ */
:root{
  --dark:#0A1733;--dark-2:#0E1F45;--foot:#070F24;
  --hero:#042F73;            /* 与 banner 图顶边同色，接缝不可见 */
  --brand:#202088;           /* logo 采样主色：按钮 / 强调 */
  --accent:#2B5BE3;--accent-2:#8FB0FF;
  --bg:#FFFFFF;--bg-soft:#F4F7FC;--bg-mist:#EDF2FA;
  --line:#DCE4F2;--line-dark:rgba(255,255,255,.14);
  --text:#101A33;--text-2:#4C5870;--text-3:#8B94A8;
  --warn:#8A5B00;--warn-bg:#FFF7E6;--warn-line:#F2C879;
  /* 西文在前、中文在后：西文字体无 CJK 字形会自动落到后面的中文字体，
     这样拉丁字母与数字用 SF Pro / Segoe UI，避免落进雅黑较差的西文字形 */
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI Variable Display","Segoe UI",Inter,Roboto,
         "PingFang SC","HarmonyOS Sans SC","MiSans","Source Han Sans SC","Noto Sans CJK SC",
         "Microsoft YaHei UI","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
  --w:1280px;--pad:clamp(20px,4vw,56px);
  --r:0px;--r-s:0px;
  --shadow:0 10px 34px rgba(13,32,84,.08);
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:94px}
html:has(.pdbar){scroll-padding-top:150px}   /* 导航 74 + 分节条 54 + 余量 */
body{font-family:var(--sans);color:var(--text);background:var(--bg);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:"kern" 1;overflow-x:hidden}
::selection{background:var(--accent);color:#fff}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit;color:inherit}table{border-collapse:collapse}
.wrap{width:min(100%,var(--w));margin:0 auto;padding-inline:var(--pad)}
.narrow{max-width:880px}
section{padding:clamp(64px,7.5vw,104px) 0}
.hide-sm{}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);border-bottom:1px solid transparent;backdrop-filter:blur(14px);transition:border-color .3s,box-shadow .3s}
.nav.scrolled{border-color:var(--line);box-shadow:0 8px 28px rgba(13,32,84,.07)}
.nav-in{height:74px;display:flex;align-items:center;gap:40px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{width:auto;height:46px}.brand>span{display:flex;flex-direction:column}
.brand b{font-size:19px;font-weight:800;letter-spacing:0;color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:clamp(18px,2.2vw,34px);margin-left:auto}
.nav-links>a:not(.nav-cta){position:relative;padding:26px 0;font-size:14.5px;font-weight:600;color:#3A465F}
.nav-links>a:not(.nav-cta)::after{content:"";position:absolute;left:50%;right:50%;bottom:18px;height:2px;border-radius:0;background:var(--accent);transition:left .3s var(--ease),right .3s var(--ease)}
.nav-links>a:hover,.nav-links>a.on{color:var(--brand)}
.nav-links>a:hover::after,.nav-links>a.on::after{left:0;right:0}
.nav-cta{display:inline-flex;align-items:center;gap:9px;margin-left:6px;padding:11px 18px;border-radius:var(--r-s);background:var(--brand);color:#fff;font-size:13.5px;font-weight:700;letter-spacing:.02em;transition:background .25s,transform .25s}
.nav-cta:hover{background:#2A2AB0;transform:translateY(-1px)}
.nav-cta i{font-style:normal;transition:transform .3s var(--ease)}.nav-cta:hover i{transform:translate(2px,-2px)}
.burger{display:none;border:0;background:none;width:42px;height:42px}.burger i{display:block;width:22px;height:2px;margin:5px auto;border-radius:0;background:var(--text);transition:.3s}
.scroll-progress{position:fixed;top:73px;left:0;right:0;height:2px;z-index:101;pointer-events:none}.scroll-progress i{display:block;width:0;height:100%;background:var(--accent)}

/* ---------- 通用文字与控件 ---------- */
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:16px;font:700 12px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.eyebrow i{width:22px;height:2px;border-radius:0;background:currentColor}
.sub-label{margin-bottom:14px;font:700 12px/1 var(--mono);letter-spacing:.2em;color:var(--brand)}
.sec-head{max-width:820px}
.sec-head h2{margin-bottom:16px;font-size:clamp(26px,3vw,38px);line-height:1.22;font-weight:760;letter-spacing:-.02em}
.sec-head p{max-width:700px;font-size:16px;line-height:1.85;color:var(--text-2)}
.sec-more{display:flex;justify-content:space-between;align-items:flex-end;gap:36px;margin-bottom:44px}.sec-more .sec-head{margin:0}.sec-more>.text-link{margin-bottom:6px;flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:50px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-s);font-size:14.5px;font-weight:700;letter-spacing:.01em;transition:transform .25s var(--ease),background .25s,color .25s,border-color .25s,box-shadow .25s}
.btn:hover{transform:translateY(-2px)}
.btn i,.text-link i{font-style:normal}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(32,32,136,.25)}.btn-primary:hover{background:#2A2AB0}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-ink,.btn-brand{background:var(--brand);color:#fff}.btn-line{border-color:var(--line)}.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.text-link{display:inline-flex;align-items:center;gap:8px;padding:6px 0;font-size:14.5px;font-weight:700;color:var(--accent);transition:gap .3s var(--ease)}.text-link:hover{gap:14px}.text-link.light{color:var(--accent-2)}
.crumb{padding:14px 0;font-size:12.5px;color:var(--text-3)}.crumb a:hover{color:var(--accent)}.crumb i{font-style:normal;padding:0 9px;opacity:.55}

/* ---------- 首页 Hero（原站 banner 图 + 网格纹理） ---------- */
.home-hero{position:relative;padding:0;overflow:hidden;background:linear-gradient(180deg,#041030 0%,#03215A 46%,var(--hero) 78%);color:#fff}
.home-hero::before{content:"";position:absolute;inset:0;z-index:1;background:
  linear-gradient(90deg,rgba(126,164,255,.09) 1px,transparent 1px),
  linear-gradient(rgba(126,164,255,.07) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(120% 90% at 30% 10%,#000 30%,transparent 75%)}
.home-hero::after{content:"";position:absolute;z-index:1;width:720px;height:720px;left:-180px;top:-320px;border-radius:50%;background:radial-gradient(circle,rgba(66,110,245,.35),transparent 65%);filter:blur(10px)}
.hero-lineup{position:relative;z-index:2;display:block;margin-top:clamp(24px,4vw,56px);width:100%;height:auto;-webkit-mask-image:linear-gradient(180deg,transparent 0,#000 22%);mask-image:linear-gradient(180deg,transparent 0,#000 22%)}
.hero-inner{position:relative;z-index:3;padding-top:clamp(56px,7vw,96px)}
.hero-kicker{display:flex;align-items:center;gap:12px;margin-bottom:22px;font:700 11px/1 var(--mono);letter-spacing:.2em;color:#9FB6E8}
.hero-kicker i{width:26px;height:2px;background:var(--accent-2)}
.hero-title{max-width:820px;font-size:clamp(34px,4.6vw,58px);line-height:1.18;font-weight:800;letter-spacing:-.02em}
.hero-title em{font-style:normal;color:var(--accent-2)}
.hero-lede{max-width:640px;margin:20px 0 30px;font-size:clamp(15.5px,1.4vw,18px);line-height:1.85;color:#C2D2F2}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
/* 合作伙伴条并入 hero 底部：白底 JPG logo 先反相灰度，再以 screen 混合，白底消失、logo 反白 */
.hero-partners{position:relative;z-index:3;padding:14px 0 16px;border-top:1px solid rgba(255,255,255,.08);background:rgba(2,16,52,.4);overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.hero-partners .partner-logo{height:54px}
.hero-partners .partner-logo img{max-width:152px;max-height:46px;filter:grayscale(1) invert(1);mix-blend-mode:screen;opacity:.6;transition:opacity .3s}
.hero-partners .partner-logo:hover img{opacity:.95}

/* ---------- 解决方案（三大业务 + 行业入口） ---------- */
.sol-section{background:var(--bg-soft)}
.bizlist{display:flex;flex-direction:column;gap:clamp(48px,6vw,84px)}
.biz{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,5vw,72px);align-items:center}
.biz.rev .biz-img{order:2}
.biz-img{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-mist)}
.biz-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.biz:hover .biz-img img{transform:scale(1.04)}
.biz-body .en{margin-bottom:12px;font:600 12px/1 var(--mono);letter-spacing:.16em;color:var(--text-3)}
.biz-body h3{font-size:clamp(26px,2.6vw,34px);font-weight:780;letter-spacing:-.02em}
.biz-body p{margin:16px 0 20px;font-size:15.5px;line-height:1.9;color:var(--text-2)}
.biz-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.biz-tags span{padding:8px 13px;border:1px solid var(--line);font-size:12.5px;color:var(--text-2);background:#fff}
.ind-links{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.ind-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:15px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-s);font-size:14px;font-weight:650;transition:border-color .25s,color .25s,transform .25s}
.ind-links a small{font-weight:400;font-size:11.5px;color:var(--text-3)}
.ind-links a i{font-style:normal;color:var(--text-3);transition:transform .25s}
.ind-links a:hover{border-color:var(--accent);color:var(--brand);transform:translateY(-2px)}.ind-links a:hover i{transform:translateX(3px);color:var(--accent)}

/* ---------- 从单机到系统（深底） ---------- */
.sys-section{position:relative;background:#fff;overflow:hidden}
.sys-section .wrap{position:relative}
.sys-section .sec-head{max-width:none;text-align:center}
.sys-section .sec-head p{margin-inline:auto}
.sys-flow{display:flex;align-items:flex-start;justify-content:center;gap:clamp(4px,1.4vw,18px);margin-top:52px}
.sf-step{flex:0 1 168px;text-align:center}
.sf-step .ic{display:grid;place-items:center;width:clamp(78px,7vw,104px);height:clamp(78px,7vw,104px);margin:0 auto 22px;border-radius:50%;background:var(--brand);color:#fff;transition:transform .35s var(--ease),background .35s}
.sf-step:hover .ic{transform:translateY(-4px);background:#2A2AB0}
.sf-step .ic svg{width:44%;height:44%;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.sf-step h4{font-size:16.5px;font-weight:750;color:var(--text);text-wrap:balance}
.sf-step h4 .nb{display:inline-block;white-space:nowrap}
.sf-step p{margin-top:12px;font-size:14px;color:var(--text-3)}
.sf-dots{display:flex;gap:6px;flex:0 0 auto;margin-top:clamp(38px,3.4vw,50px)}
.sf-dots i{width:6px;height:6px;border-radius:50%;background:#C3CCE0}
.sf-dots i:last-child{background:#DDE3EE}
.sys-arch{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:clamp(48px,5vw,70px);padding:16px 20px;border:1px solid var(--line);background:var(--bg-soft)}
.arch-label{margin-right:6px;font:700 11px/1 var(--mono);letter-spacing:.16em;color:var(--accent)}
.sys-arch .al{display:flex;flex-direction:column;gap:3px;padding:9px 15px;border:1px solid var(--line);background:#fff;transition:border-color .3s}
.sys-arch .al:hover{border-color:var(--accent)}
.sys-arch .ly{font-size:13.5px;font-weight:750}
.sys-arch .tech{font:600 10px/1.4 var(--mono);letter-spacing:.04em;color:var(--text-3)}
.sys-arch>i{font-style:normal;color:#B6C0D4}
.sys-caps{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px}
.sys-caps span{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);font-size:13px;color:var(--text-2)}
.sys-caps span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- 产品中心（主推 + 全系速查行） ---------- */
.pc-section{background:#fff}
.feat{margin-bottom:26px;background:var(--bg-soft);border:1px solid var(--line)}
.feat-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,56px);align-items:center;padding:clamp(22px,3vw,40px)}
.feat-panel[hidden]{display:none}
.feat-panel.on{animation:featIn .45s var(--ease)}
@keyframes featIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.feat-shot{position:relative;border-radius:var(--r-s);background:#fff;border:1px solid var(--line);padding:18px}
.feat-shot img{width:100%;aspect-ratio:4/3;object-fit:contain;mix-blend-mode:multiply}
.feat-shot small{position:absolute;left:16px;top:14px;font:700 10.5px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}
.feat-copy .cat{display:inline-block;margin-bottom:12px;padding:6px 10px;border-radius:0;background:#E4EBFB;color:var(--brand);font-size:12px;font-weight:700}
.feat-copy h3{font-size:clamp(23px,2.4vw,30px);font-weight:780;letter-spacing:-.015em}
.feat-copy .en{margin:6px 0 12px;font:600 11px/1 var(--mono);letter-spacing:.12em;color:var(--text-3)}
.feat-copy .ben{font-size:15.5px;line-height:1.8;color:var(--text-2)}
.feat-kv{display:flex;gap:26px;margin:20px 0 22px;padding:16px 0;border-block:1px solid var(--line)}
.feat-kv .n{font:500 26px/1 var(--mono);letter-spacing:-.03em}.feat-kv .n u{margin-left:2px;text-decoration:none;font-size:12px;color:var(--text-3)}
.feat-kv .l{margin-top:7px;font-size:12px;color:var(--text-2)}
.prail{display:flex;gap:16px;overflow-x:auto;overflow-y:hidden;padding:4px 4px 18px;scrollbar-width:thin;scrollbar-color:var(--accent) transparent;cursor:grab}
.prail::-webkit-scrollbar{height:4px}
.prail::-webkit-scrollbar-track{background:transparent}
.prail::-webkit-scrollbar-thumb{background:var(--accent);border-radius:0}
.prail:active{cursor:grabbing}
.pr-card{flex:0 0 262px;display:flex;flex-direction:column;padding:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r);transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.pr-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#BFCFF0}
.pr-card.on{border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.pr-card.on .pr-shot{background:#E7EDFB}
.pr-card.on .cat{color:var(--brand)}
.pr-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.pr-shot{height:150px;display:grid;place-items:center;margin-bottom:14px;border-radius:var(--r-s);background:var(--bg-soft);overflow:hidden}
.pr-shot img{width:86%;height:86%;object-fit:contain;mix-blend-mode:multiply;transition:transform .5s var(--ease)}
.pr-card:hover .pr-shot img{transform:scale(1.05)}
.pr-card .cat{font:700 10px/1 var(--mono);letter-spacing:.1em;color:var(--accent)}
.pr-card h3{margin:7px 0 3px;font-size:16.5px;font-weight:750;letter-spacing:-.01em}
.pr-card .en{font:600 9.5px/1.4 var(--mono);letter-spacing:.06em;color:var(--text-3)}
.pr-kv{display:flex;gap:18px;margin:13px 0 14px;padding-top:12px;border-top:1px solid var(--line)}
.pr-kv>span{display:flex;flex-direction:column;gap:4px}
.pr-kv b{font:500 15.5px/1 var(--mono);letter-spacing:-.02em}
.pr-kv b u{margin-left:2px;text-decoration:none;font-size:9.5px;color:var(--text-3)}
.pr-kv small{font-size:10px;color:var(--text-3)}
.pr-card .go{margin-top:auto;font-size:12.5px;font-weight:700;color:var(--accent)}

/* ---------- 工程案例（真实项目图，不编数字） ---------- */
.case-section{background:var(--bg-soft)}
.case-note{margin-top:22px;font-size:13px;color:var(--text-3)}

/* ---------- 关于我们 ---------- */
.about-sec{background:#fff}
.about-in{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);align-items:center}
.about-media{position:relative;border-radius:var(--r);overflow:hidden}
.about-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.about-media span{position:absolute;left:16px;bottom:16px;padding:9px 12px;border-radius:0;background:rgba(7,19,48,.78);backdrop-filter:blur(6px);font:700 10px/1.5 var(--mono);letter-spacing:.12em;color:#CBDAFB}
.about-txt h2{margin-bottom:18px;font-size:clamp(26px,3vw,36px);line-height:1.25;font-weight:770;letter-spacing:-.02em}
.about-txt p{margin-bottom:14px;font-size:15.5px;line-height:1.9;color:var(--text-2)}
.about-mini{display:flex;gap:34px;margin:22px 0 26px;padding:18px 0;border-block:1px solid var(--line)}
.about-mini b{display:block;font:500 26px/1 var(--mono);letter-spacing:-.03em}
.about-mini sup{font:700 12px/1 var(--mono);color:var(--accent)}
.about-mini span{display:block;margin-top:7px;font-size:12.5px;color:var(--text-2)}
.about-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 合作伙伴 ---------- */
.partner-section{padding:30px 0;background:#fff;border-bottom:1px solid var(--line);overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.partner-marquee{display:flex;width:max-content;animation:marquee 50s linear infinite}
.partner-marquee:hover{animation-play-state:paused}
.partner-track{display:flex;align-items:center;gap:clamp(30px,4vw,58px);padding-right:clamp(30px,4vw,58px)}
.partner-logo{flex:none;display:grid;place-items:center;height:52px}
.partner-logo img{max-width:150px;max-height:44px;width:auto;filter:grayscale(1);opacity:.55;transition:.3s}
.partner-logo:hover img{filter:none;opacity:1}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 技术百科（首页缩略行） ---------- */
.kb-strip{padding:30px 0;background:#fff;border-top:1px solid var(--line)}
.kb-strip-in{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.kb-label{display:flex;flex-direction:column;gap:4px;min-width:96px}
.kb-label span{font:700 9.5px/1 var(--mono);letter-spacing:.18em;color:var(--accent)}
.kb-label b{font-size:17px;font-weight:750}
.kb-links{display:flex;flex-wrap:wrap;gap:10px;flex:1}
.kb-links a{display:inline-flex;align-items:center;gap:7px;padding:9px 15px;border:1px solid var(--line);border-radius:0;font-size:13.5px;font-weight:600;color:var(--text-2);transition:border-color .25s,color .25s}
.kb-links a i{font-style:normal;color:var(--accent);transition:transform .25s}
.kb-links a:hover{border-color:var(--accent);color:var(--accent)}
.kb-links a:hover i{transform:translateX(2px)}
.kb-all{font-size:13px;font-weight:700;color:var(--accent);white-space:nowrap}
.pd-reads{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.pd-reads b{font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}
.pd-reads a{font-size:13.5px;font-weight:650;color:var(--accent)}
.pd-reads a:hover{text-decoration:underline}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg-soft)}
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(40px,7vw,110px)}
.faq-kb{margin-top:2px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--r-s);margin-bottom:12px;transition:border-color .25s}
.faq details[open]{border-color:#BFCFF0}
.faq summary{position:relative;padding:18px 52px 18px 20px;cursor:pointer;list-style:none;font-size:15.5px;font-weight:650}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:14px;font:300 22px/1.4 var(--mono);color:var(--accent);transition:.3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 20px 18px;font-size:14px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA 带 ---------- */
.cta{padding:64px 0;background:linear-gradient(120deg,#101C42,#1D2C7A);color:#fff}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta h2{font-size:clamp(23px,2.8vw,32px);font-weight:760;letter-spacing:-.015em}
.cta p{max-width:640px;margin-top:9px;font-size:14.5px;color:#BECBEF}
.cta .btn{flex:none;background:#fff;color:var(--brand);box-shadow:none}.cta .btn:hover{background:#EDF2FF}

/* ---------- 页脚 ---------- */
/* ---------- 招贤纳士 ---------- */
.jobs{border-top:2px solid var(--text)}
.jobs-head{display:grid;grid-template-columns:1fr 120px 120px 140px;gap:16px;padding:14px 20px;background:var(--bg-soft);border-bottom:1px solid var(--line);font:700 11.5px/1 var(--mono);letter-spacing:.1em;color:var(--text-3)}
.job{border-bottom:1px solid var(--line)}
.job summary{display:grid;grid-template-columns:1fr 120px 120px 140px;gap:16px;align-items:center;padding:20px;cursor:pointer;list-style:none;font-size:14px;color:var(--text-2);transition:background .25s}
.job summary::-webkit-details-marker{display:none}
.job summary:hover{background:var(--bg-soft)}
.job summary .t{position:relative;padding-right:26px;font-size:16.5px;font-weight:750;color:var(--text)}
.job summary .t::after{content:"+";position:absolute;right:0;font:400 19px/1 var(--mono);color:var(--accent)}
.job[open] summary{background:var(--bg-soft)}
.job[open] summary .t::after{content:"−"}
.job-body{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding:8px 20px 32px}
.job-body h3{margin-bottom:12px;font:700 11.5px/1 var(--mono);letter-spacing:.14em;color:var(--brand)}
.job-body ul{list-style:none}
.job-body li{position:relative;padding:5px 0 5px 16px;font-size:14.5px;line-height:1.8;color:var(--text-2)}
.job-body li::before{content:"";position:absolute;left:0;top:15px;width:5px;height:1px;background:var(--accent)}
.job-body>a{grid-column:1/3;justify-self:start;margin-top:6px}
.jobs-note{margin-top:22px;font-size:13px;color:var(--text-3)}
.foot-jobs{display:inline-block;margin-top:16px;font-size:13px;font-weight:700;color:var(--accent-2)}
.foot-qr img{width:112px;height:auto;margin-bottom:9px;background:#fff;padding:5px}
.foot-qr span{font-size:12px;color:#8E9AB8}
.spec-custom{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin-top:20px;padding:16px 20px;border-left:3px solid var(--brand);background:var(--bg-soft);font-size:14.5px;line-height:1.8;color:var(--text-2)}
.spec-custom a{font-weight:700;color:var(--accent);white-space:nowrap}

.vision-quote{display:flex;flex-direction:column;gap:8px;margin-top:30px;padding:22px 26px;border-left:3px solid var(--accent);background:var(--bg-soft);border-radius:0}
.vision-quote span{font:700 10px/1 var(--mono);letter-spacing:.18em;color:var(--accent)}
.vision-quote b{font-size:20px;font-weight:780;letter-spacing:.02em}

.foot{padding:48px 0 20px;background:var(--foot);color:#8E9AB8}
.foot-lead{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 40px;padding-bottom:26px;border-bottom:1px solid var(--line-dark)}
.foot-lead h2{font-size:clamp(22px,2.6vw,32px);line-height:1.2;font-weight:780;letter-spacing:-.02em;color:#fff}
.foot-call{display:inline-flex;align-items:center;gap:18px;padding:12px 18px;border:1px solid var(--line-dark);font:600 15.5px/1 var(--mono);color:#fff;transition:border-color .25s,background .25s}
.foot-call:hover{border-color:var(--accent-2);background:rgba(255,255,255,.04)}
.foot-call i{font-style:normal;color:var(--accent-2)}
.foot-grid{display:grid;grid-template-columns:1fr 1fr 1.5fr auto;gap:26px 36px;padding:28px 0 24px}
.foot-grid h4{margin-bottom:11px;font:700 11px/1 var(--mono);letter-spacing:.16em;color:#fff}
.foot-grid ul{list-style:none}.foot-grid li{margin-bottom:6px;font-size:13.5px;line-height:1.6}
.foot-grid a:hover{color:#fff}
.foot-contact .addr{margin-top:4px;font-size:12.5px;line-height:1.7;color:#7C889F}
.foot-qr img{width:92px;height:auto;background:#fff;padding:4px;margin-bottom:6px}
.foot-qr span{display:block;font-size:11.5px}
.foot-btm{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 24px;padding-top:14px;border-top:1px solid var(--line-dark);font-size:12px}
.foot-btm b{font-weight:600;color:#B9C3D6}
.foot-btm a:hover{color:#fff}

/* ---------- 悬浮联系 ---------- */
.dock{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:8px}
.dock a,.dock button{display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--line);border-radius:var(--r-s);background:rgba(255,255,255,.95);backdrop-filter:blur(8px);box-shadow:0 6px 20px rgba(13,32,84,.14);cursor:pointer;transition:transform .25s,border-color .25s,color .25s}
.dock a:hover,.dock button:hover{transform:translateY(-2px);border-color:var(--accent);color:var(--brand)}
.dock svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.dock [data-top]{opacity:0;pointer-events:none;transition:opacity .3s}
.dock.show-top [data-top]{opacity:1;pointer-events:auto}

/* ============ 内页 ============ */
/* 内页 hero（浅底） */
.page-hero{padding:64px 0 88px;background:var(--bg-soft)}
.page-hero-grid,.solution-hero-grid,.about-hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(40px,6vw,96px);align-items:center}
.page-hero-copy h1{font-size:clamp(30px,3.6vw,46px);line-height:1.18;font-weight:790;letter-spacing:-.025em}
.page-hero-copy h1 em{font-style:normal;color:var(--brand)}
.page-hero-copy p{max-width:600px;margin:22px 0;font-size:16.5px;line-height:1.85;color:var(--text-2)}
.product-index-visual{position:relative;min-height:400px;border-radius:var(--r);overflow:hidden;background:linear-gradient(180deg,#041030,var(--hero))}
.product-index-visual::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(126,164,255,.08) 1px,transparent 1px),linear-gradient(rgba(126,164,255,.06) 1px,transparent 1px);background-size:52px 52px}
.product-index-visual>img{position:absolute;left:0;right:0;bottom:0;width:100%;height:auto}
.product-index-visual>div{position:absolute;left:22px;top:20px;display:flex;align-items:baseline;gap:10px;color:#fff}
.product-index-visual b{font:400 42px/1 var(--mono)}
.product-index-visual span{font:600 9.5px/1.5 var(--mono);letter-spacing:.14em;color:#9FB6E8}

/* 产品目录 */
.product-catalog{padding-top:88px;background:#fff}
.catalog-head{display:flex;align-items:end;justify-content:space-between;gap:36px;margin-bottom:36px}
.catalog-head>div>span{font:700 11px/1 var(--mono);letter-spacing:.16em;color:var(--accent)}
.catalog-head h2{margin-top:10px;font-size:30px;font-weight:760;letter-spacing:-.02em}
.filter-bar{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}
.filter-bar button{border:1px solid var(--line);border-radius:0;background:#fff;padding:9px 15px;cursor:pointer;font-size:12.5px;transition:.25s}
.filter-bar button:hover{border-color:var(--brand);color:var(--brand)}
.filter-bar button.on{background:var(--brand);border-color:var(--brand);color:#fff}
.pcard.filtered-out,.pr-card.filtered-out{display:none}

/* 产品卡（目录页 / 相关车型） */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pcard{position:relative;display:flex;flex-direction:column;min-width:0;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r);transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;transition-delay:var(--delay,0ms)}
.pcard:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#BFCFF0}
.pcard-top{display:grid;grid-template-columns:38px 1fr 24px;align-items:center;font:700 10.5px/1.4 var(--mono);letter-spacing:.1em;color:var(--text-3)}
.pcard-top .cat{color:var(--accent)}
.pcard-top i{font-style:normal;text-align:right;color:var(--text-3);transition:transform .3s,color .3s}
.pcard:hover .pcard-top i{transform:translate(2px,-2px);color:var(--accent)}
.pcard .shot{position:relative;height:230px;margin:12px 0 16px;display:grid;place-items:center;overflow:hidden;border-radius:var(--r-s);background:var(--bg-soft)}
.pcard .shot img{width:90%;height:90%;object-fit:contain;mix-blend-mode:multiply;transition:transform .55s var(--ease)}
.pcard:hover .shot img{transform:scale(1.05)}
.pcard-copy{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:end}
.pcard h3{font-size:19px;font-weight:760;letter-spacing:-.01em}
.pcard .ben{max-width:300px;margin-top:8px;font-size:13px;line-height:1.7;color:var(--text-2)}
.pcard .kv{display:flex;gap:16px;text-align:right}
.pcard .kv .n{font:500 16px/1 var(--mono);white-space:nowrap}
.pcard .kv .n u{margin-left:2px;text-decoration:none;font-size:9.5px;color:var(--text-3)}
.pcard .kv .l{margin-top:5px;font-size:9.5px;color:var(--text-3)}

/* 参数对照表 */
.comparison-section{background:var(--bg-soft)}
.comparison-section .sec-head{margin-bottom:36px}
.table-shell{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.cmp{width:100%;min-width:900px;font-size:14px}
.cmp th{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;font:700 11px/1.4 var(--mono);letter-spacing:.09em;color:var(--text-3);background:var(--bg-soft)}
.cmp td{padding:15px 18px;border-bottom:1px solid var(--line)}
.cmp tbody tr{cursor:pointer;transition:.2s}.cmp tbody tr:last-child td{border-bottom:0}
.cmp tbody tr:hover{background:var(--bg-soft)}
.cmp .nm{font-weight:700}.cmp .nm small{display:block;margin-top:3px;font:400 10.5px/1.4 var(--mono);color:var(--text-3)}
.cmp .num{font-family:var(--mono);font-size:13px}
.cmp .go{text-align:right;color:var(--accent);font-weight:700}

/* 产品详情 */
.pdbar{position:sticky;top:74px;z-index:80;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.pdbar-in{height:54px;display:flex;align-items:center;gap:26px}
.pdbar .nm{font-size:14.5px;font-weight:750}
.pdbar a.anchor{font-size:13px;color:var(--text-2)}.pdbar a.anchor:hover{color:var(--brand)}
.pdbar .pd-ask{margin-left:auto}.pdbar .pd-ask a{font-size:13px;font-weight:700;color:var(--accent)}
.phero{padding:56px 0 64px;background:var(--bg-soft)}
.phero-in{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(36px,5vw,80px);align-items:center}
.phero .cat{display:inline-flex;align-items:center;gap:9px;margin-bottom:16px;font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--accent)}
.phero .cat i{width:20px;height:2px;background:currentColor}
.phero h1{font-size:clamp(32px,4.4vw,54px);line-height:1.12;font-weight:790;letter-spacing:-.025em}
.phero .en{margin:12px 0 20px;font:600 11px/1 var(--mono);letter-spacing:.12em;color:var(--text-3)}
.phero .ben{max-width:520px;font-size:16.5px;line-height:1.8;color:var(--text-2)}
.phero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:28px}
.phero-figure{position:relative;padding:clamp(20px,3vw,44px);background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.phero-figure img{position:relative;z-index:2;width:100%;aspect-ratio:4/3;object-fit:contain;mix-blend-mode:multiply}
.model-watermark{position:absolute;right:10px;bottom:-14px;z-index:1;font:200 150px/1 var(--mono);letter-spacing:-.08em;color:#EBF0F9;user-select:none}
.qf{padding:56px var(--pad)}
.qf h2{margin-bottom:28px;font-size:24px;font-weight:760;letter-spacing:-.015em}
.qf-row{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.qf-row>div{text-align:center;padding:26px 18px}
.qf-row>div+div{border-left:1px solid var(--line)}
.qf-row .n{font:400 clamp(30px,4vw,50px)/1 var(--mono);letter-spacing:-.05em;color:var(--brand)}
.qf-row .n u{margin-left:4px;text-decoration:none;font-size:.34em;color:var(--text-3)}
.qf-row .l{margin-top:11px;font-size:13px;font-weight:650}
.qf-more{text-align:center;margin-top:24px}.qf-more a{font-size:13.5px;font-weight:700;color:var(--accent)}
.overview-section{background:var(--bg-soft)}
.spec-section{background:#fff}
.spec-section .sec-head,.faq-product .sec-head{margin-bottom:32px}
.spec{width:100%;font-size:14.5px;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.spec caption{text-align:left;padding-bottom:13px;font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}
.spec th,.spec td{padding:13px 18px;border-bottom:1px solid var(--line);text-align:left}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec th{width:34%;font-weight:550;color:var(--text-2);background:var(--bg-soft)}
.spec td{font-family:var(--mono);font-size:13.5px}
.spec-note{margin-top:18px;padding:14px 18px;border:1px solid var(--warn-line);border-left-width:3px;border-radius:var(--r-s);background:var(--warn-bg);color:var(--warn);font-size:13px;line-height:1.7}
.faq-product{background:var(--bg-soft)}

/* 术语库 */
.tgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tcell{position:relative;display:flex;flex-direction:column;min-height:210px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r);transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.tcell:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#BFCFF0}
.term-no{font:700 10.5px/1 var(--mono);color:var(--text-3)}
.tcell .t{margin-top:18px;font-size:19px;font-weight:760;letter-spacing:-.01em}
.tcell .f{margin-top:6px;font:600 10px/1.5 var(--mono);letter-spacing:.06em;color:var(--text-3)}
.tcell .s{margin-top:12px;font-size:13px;line-height:1.75;color:var(--text-2)}
.tcell>i{position:absolute;right:20px;top:20px;font-style:normal;color:var(--text-3)}
.art{max-width:840px;padding:52px 0 90px}
.art>.eyebrow{margin-bottom:14px}
.art h1{font-size:clamp(30px,4.4vw,48px);line-height:1.16;font-weight:790;letter-spacing:-.02em}
.art .full{margin:12px 0 24px;font:600 11px/1.5 var(--mono);letter-spacing:.08em;color:var(--text-3)}
.art .lead{font-size:19px;line-height:1.75;font-weight:600}
.art p{margin-bottom:20px;font-size:15.5px;line-height:1.95;color:#39435B}
.art h2{margin:46px 0 20px;font-size:25px;font-weight:750;letter-spacing:-.015em}
.src{margin-top:44px;padding:20px 24px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-s);font-size:12.5px}
.src .h{margin-bottom:12px;font:700 10.5px/1 var(--mono);letter-spacing:.13em;color:var(--text-3)}
.src ul{list-style:none}.src li{margin:7px 0}.src a{color:var(--accent)}
/* 词条内相关车型（植入区与正文明确分隔） */
.relp{margin:14px 0 8px;padding:20px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r)}
.relp .h{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:14px}
.relp .h b{font-size:15px;font-weight:750}
.relp .h span{font-size:11.5px;color:var(--text-3)}
.relp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.relp-grid a{display:flex;gap:12px;align-items:center;padding:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-s);transition:border-color .25s,transform .25s}
.relp-grid a:hover{border-color:var(--accent);transform:translateY(-2px)}
.relp-grid .th{width:64px;height:48px;flex:none;padding:3px;border:1px solid var(--line);border-radius:0;background:#fff}
.relp-grid .th img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.relp-grid .nm{font-size:13.5px;font-weight:700;line-height:1.4}
.relp-grid .nm small{display:block;font-size:11px;font-weight:400;color:var(--text-3)}

/* 解决方案页 */
.solution-hero{padding:64px 0 88px;background:var(--bg-soft)}
.solution-hero .page-hero-copy h1 em{color:var(--brand)}
.solution-hero-media{position:relative;height:460px;border-radius:var(--r);overflow:hidden}
.solution-hero-media img{width:100%;height:100%;object-fit:cover}
.solution-hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,19,48,.5),transparent 55%)}
.solution-hero-media span{position:absolute;z-index:2;left:20px;bottom:18px;font:700 10px/1 var(--mono);letter-spacing:.14em;color:#fff}
.industry-section{background:#fff}
.industry-section>.wrap>.sec-head{margin-bottom:44px}
.industry-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.industry-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s}
.industry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.industry-img{position:relative;height:280px;overflow:hidden}
.industry-img img{width:100%;height:100%;object-fit:cover;transition:.6s var(--ease)}
.industry-img span{position:absolute;left:14px;top:14px;display:grid;place-items:center;width:40px;height:40px;border-radius:0;background:rgba(7,19,48,.75);backdrop-filter:blur(6px);color:#CBDAFB;font:600 12px/1 var(--mono)}
.industry-card:hover img{transform:scale(1.04)}
.industry-copy{padding:24px}
.industry-copy small{font:700 10.5px/1 var(--mono);letter-spacing:.12em;color:var(--accent)}
.industry-copy h2{margin:9px 0 12px;font-size:23px;font-weight:760;letter-spacing:-.015em}
.industry-copy p{font-size:14px;line-height:1.8;color:var(--text-2)}
.industry-copy ul{display:flex;flex-wrap:wrap;gap:7px;list-style:none;margin-top:16px}
.industry-copy li{padding:6px 10px;border:1px solid var(--line);border-radius:0;font-size:11.5px;color:var(--text-2);background:var(--bg-soft)}
.project-section{padding-bottom:96px;background:var(--bg-soft);overflow:hidden}
.project-head .sec-head{margin-bottom:40px}
.project-rail,.proof-rail{display:flex;gap:16px;overflow-x:auto;overflow-y:hidden;padding:0 max(var(--pad),calc((100vw - var(--w))/2 + var(--pad))) 18px;scrollbar-width:thin;scrollbar-color:var(--accent) transparent;cursor:grab}
.project-rail::-webkit-scrollbar,.proof-rail::-webkit-scrollbar{height:4px}
.project-rail::-webkit-scrollbar-track,.proof-rail::-webkit-scrollbar-track{background:transparent}
.project-rail::-webkit-scrollbar-thumb,.proof-rail::-webkit-scrollbar-thumb{background:var(--accent);border-radius:0}
.project-rail:active,.proof-rail:active{cursor:grabbing}
.project-card{flex:0 0 clamp(330px,40vw,560px);background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.project-img{height:320px;overflow:hidden;border-bottom:1px solid var(--line)}
.project-img img{width:100%;height:100%;object-fit:contain;background:#fff;transition:.5s var(--ease)}
.project-card:hover img{transform:scale(1.02)}
.project-card>div:last-child{position:relative;padding:18px 20px}
.project-card span{font:700 10.5px/1 var(--mono);letter-spacing:.11em;color:var(--accent)}
.project-card h3{margin-top:8px;font-size:18px;font-weight:740}
.project-card>div:last-child>i{position:absolute;right:20px;top:24px;font-style:normal;color:var(--text-3)}
.method-section{background:var(--dark);color:#fff}
.method-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(40px,6vw,90px)}
.method-grid .sec-head h2{color:#fff}.method-grid .sec-head p{color:#A7B8DE}
.method-grid ol{list-style:none;border-top:1px solid var(--line-dark)}
.method-grid li{display:grid;grid-template-columns:52px 1fr;gap:14px;padding:20px 0;border-bottom:1px solid var(--line-dark)}
.method-grid li>b{font:500 13px/1.7 var(--mono);color:var(--accent-2)}
.method-grid li h3{font-size:17.5px;font-weight:720}
.method-grid li p{margin-top:6px;font-size:13.5px;color:#93A6CE}

/* 关于页 */
.about-hero{padding:64px 0 96px;background:var(--bg-soft)}
.about-hero .page-hero-copy h1 em{color:var(--brand)}
.about-hero-media{position:relative;height:520px}
.about-hero-media>img{width:82%;height:74%;object-fit:cover;border-radius:var(--r)}
.about-hero-float{position:absolute;right:0;bottom:0;width:56%;height:46%;border:8px solid var(--bg-soft);border-radius:var(--r);overflow:hidden}
.about-hero-float img{width:100%;height:100%;object-fit:cover}
.about-hero-float span{position:absolute;right:10px;bottom:10px;padding:8px 10px;border-radius:0;background:rgba(7,19,48,.8);font:700 8.5px/1.5 var(--mono);letter-spacing:.1em;color:#CBDAFB}
.about-hero-stats{display:flex;gap:32px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.about-hero-stats b{display:block;font:500 25px/1 var(--mono)}
.about-hero-stats sup{font:700 11px/1 var(--mono);color:var(--accent)}
.about-hero-stats span{display:block;margin-top:7px;font-size:12px;color:var(--text-2)}
.about-story{background:#fff}
.about-story-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(40px,6vw,90px)}
.about-prose p{font-size:clamp(16.5px,1.7vw,20px);line-height:1.85;color:#2C3651}
.about-prose p+p{margin-top:22px}
.service-section{background:var(--bg-soft)}
.service-head{margin-bottom:40px}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.service-card{min-height:190px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r);transition:transform .3s var(--ease),box-shadow .3s}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.service-card>span{font:700 11px/1 var(--mono);color:var(--accent)}
.service-card h3{margin:30px 0 10px;font-size:19px;font-weight:750}
.service-card p{font-size:13.5px;line-height:1.75;color:var(--text-2)}
.proof-section{background:#fff;overflow:hidden}
.proof-head .sec-head{margin-bottom:40px}
.proof-card{position:relative;flex:0 0 clamp(220px,23vw,330px);height:440px;display:grid;place-items:center;padding:16px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r)}
.proof-card img{width:100%;height:100%;object-fit:contain;transition:.4s}
.proof-card:hover img{transform:scale(1.02)}
.proof-card span{position:absolute;right:12px;bottom:12px;padding:5px 8px;border-radius:0;background:var(--dark);font:600 9px/1 var(--mono);color:#fff}
.contact-section{background:var(--dark);color:#fff}
.contact-section .sec-head h2{color:#fff}.contact-section .sec-head p{color:#A7B8DE}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,90px)}
.contact-card{display:grid;align-content:start}
.contact-card>span{margin-top:20px;padding-top:15px;border-top:1px solid var(--line-dark);font:700 10px/1 var(--mono);letter-spacing:.14em;color:#93A6CE}
.contact-card>a{margin-top:8px;font:500 clamp(20px,2.6vw,32px)/1.2 var(--mono);color:#fff}
.contact-card>a:hover{color:var(--accent-2)}
.contact-card p{margin-top:8px;font-size:14.5px;line-height:1.75;color:#C6D4F1}

/* ---------- 动效基元（少而克制） ---------- */
.js .rise{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--delay,0ms)}
.js .rise.in{opacity:1;transform:none}
.js .clip{opacity:0;transform:translateY(14px);transition:opacity .8s var(--ease),transform .9s var(--ease)}
.js .clip.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-links{gap:16px}.nav-links>a:not(.nav-cta){font-size:13px}
  .ind-links{grid-template-columns:1fr 1fr}
  .sys-grid{grid-template-columns:1fr;gap:40px}
  .feat-panel{grid-template-columns:1fr 1fr}
  .pgrid,.relp-grid{grid-template-columns:1fr 1fr}
  .page-hero-grid,.solution-hero-grid,.about-hero-grid{gap:44px}
  .phero-in{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr 1.4fr auto;gap:24px 26px}
}
@media (max-width:820px){
  :root{--pad:22px}
  .nav-in{height:66px}.scroll-progress{top:65px}.pdbar{top:66px}.brand img{height:38px}
  .burger{display:block;margin-left:auto}
  .nav-links{position:fixed;top:66px;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:12px 22px 22px;background:#fff;border-bottom:1px solid var(--line);transform:translateY(-130%);opacity:0;pointer-events:none;transition:.4s var(--ease)}
  .nav.open .nav-links{transform:none;opacity:1;pointer-events:auto}
  .nav-links>a:not(.nav-cta){padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links>a:not(.nav-cta)::after{display:none}
  .nav-cta{margin:14px 0 0;justify-content:center}
  .hero-title{font-size:clamp(30px,7.5vw,44px)}
  /* 服务流程：任何宽度都保持五个圆一行，只缩尺寸不换行 */
  .sys-flow{gap:6px;justify-content:space-between}
  .sf-step{flex:1 1 0;min-width:0}
  .sf-step .ic{width:clamp(46px,8vw,80px);height:clamp(46px,8vw,80px);margin-bottom:12px}
  .sf-step h4{font-size:clamp(12px,1.9vw,15px);line-height:1.35}
  .sf-step p{margin-top:6px;font-size:clamp(10.5px,1.6vw,13px)}
  .sf-dots{display:none}
  .biz,.biz.rev{grid-template-columns:1fr;gap:26px}
  .biz.rev .biz-img{order:0}
  .feat-panel{grid-template-columns:1fr}
  .about-in{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .cta-in{flex-direction:column;align-items:flex-start}
  .foot-lead{gap:14px 24px}
  .foot-grid{grid-template-columns:1fr 1fr auto;grid-auto-flow:row dense}.foot-contact{grid-column:1/3}
  .page-hero-grid,.solution-hero-grid,.about-hero-grid,.phero-in{grid-template-columns:1fr}
  .product-index-visual{min-height:300px}
  .industry-grid{grid-template-columns:1fr}
  .method-grid,.about-story-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .service-grid{grid-template-columns:1fr 1fr}
  .about-hero-media{height:430px}
}
@media (max-width:560px){
  section{padding:56px 0}
  .hero-actions .btn{width:100%}
  .sec-more,.partner-head,.catalog-head{align-items:flex-start;flex-direction:column}
  .pr-card{flex-basis:232px}
  .ind-links{grid-template-columns:1fr}
  .sys-flow{gap:4px}
  .sf-step .ic{width:clamp(42px,11.5vw,56px);height:clamp(42px,11.5vw,56px);margin-bottom:8px}
  .sf-step .ic svg{width:48%;height:48%}
  .sf-step h4{font-size:11.5px;line-height:1.35}
  .sf-step p{margin-top:4px;font-size:10.5px}
  .sys-arch{padding:13px 15px}.sys-arch>i{display:none}.sys-arch .al{flex:1 1 42%}
  .feat-kv{flex-wrap:wrap;gap:18px}
  .pgrid,.relp-grid,.service-grid,.tgrid{grid-template-columns:1fr}
  .pcard .shot{height:210px}
  .partner-logo{width:140px;height:74px}
  .about-mini{flex-wrap:wrap;gap:20px}
  .foot{padding:30px 0 14px}
  .foot-lead{padding-bottom:16px;gap:10px}
  .foot-lead h2{font-size:20px}
  .foot-call{width:100%;justify-content:space-between;padding:10px 14px;font-size:14.5px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:14px 14px;padding:16px 0 14px}
  .foot-contact{grid-column:1/2}.foot-qr{grid-column:2/3}
  .foot-grid h4{margin-bottom:6px}
  .foot-grid li{margin-bottom:2px;font-size:12px;line-height:1.55}
  .foot-contact .addr{font-size:11.5px;line-height:1.55}
  .foot-qr img{width:80px}
  .foot-btm{flex-direction:column;gap:3px;padding-top:10px;font-size:11.5px}
  /* 常见问题竖屏紧凑 */
  .faq-layout{gap:18px}
  .faq details{margin-bottom:8px}
  .faq summary{padding:12px 38px 12px 14px;font-size:14px}
  .faq summary::after{right:13px;top:8px;font-size:20px}
  .faq .a{padding:0 14px 13px;font-size:13px;line-height:1.7}
  .filter-bar{justify-content:flex-start}
  .page-hero-copy h1{font-size:34px}
  .project-card{flex-basis:86vw}.project-img{height:250px}
  .proof-card{flex-basis:74vw;height:400px}
  .model-watermark{font-size:96px}
  .qf-row{grid-template-columns:1fr}.qf-row>div+div{border-left:0;border-top:1px solid var(--line)}
  .hide-sm{display:none!important}
  .pdbar-in{gap:14px}
  .dock{right:12px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .js .rise,.js .clip{opacity:1;transform:none}
}


/* ============================================================
   四条业务线（2026-08-28 扩建）
   色签只用于名称前的色标、类目页眉与标签；按钮仍只有品牌蓝。
   ============================================================ */
:root{--c-agv:#202088;--c-coat:#0F766E;--c-lube:#B45309;--c-fa:#6D28D9}
.l-agv{--dot:var(--c-agv);--hue:var(--c-agv)}
.l-coat{--dot:var(--c-coat);--hue:var(--c-coat)}
.l-lube{--dot:var(--c-lube);--hue:var(--c-lube)}
.l-fa{--dot:var(--c-fa);--hue:var(--c-fa)}
.nm-dot{display:inline-block;width:9px;height:9px;background:var(--dot,var(--text-3));flex:none}
.line-tag{display:inline-flex;align-items:center;gap:8px;font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}

/* ---------- 导航下拉 ---------- */
.nav-dd{position:relative}
.nav-dd>a{position:relative;display:inline-flex;align-items:center;gap:5px;padding:26px 0;font-size:14.5px;font-weight:600;color:#3A465F}
.nav-dd>a i{font-style:normal;font-size:10px;opacity:.7;transition:transform .25s}
.nav-dd:hover>a i,.nav-dd:focus-within>a i{transform:rotate(180deg)}
.nav-dd>a::after{content:"";position:absolute;left:50%;right:50%;bottom:18px;height:2px;background:var(--accent);transition:left .3s var(--ease),right .3s var(--ease)}
.nav-dd:hover>a,.nav-dd>a.on{color:var(--brand)}
.nav-dd:hover>a::after,.nav-dd>a.on::after{left:0;right:0}
.nav-menu{position:absolute;left:50%;top:100%;z-index:120;min-width:320px;padding:8px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translate(-50%,6px);transition:opacity .2s,transform .25s var(--ease),visibility .2s}
.nav-dd:hover .nav-menu,.nav-dd:focus-within .nav-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.nm-item{display:flex;align-items:flex-start;gap:12px;padding:11px 12px;transition:background .2s}
.nm-item:hover,.nm-item.on{background:var(--bg-soft)}
.nm-item .nm-dot{margin-top:6px}
.nm-item b{display:block;font-size:14px;font-weight:700;color:var(--text)}
.nm-item small{display:block;margin-top:2px;font-size:11.5px;color:var(--text-3)}

/* ---------- 首页：四业务带 ---------- */
/* 桌面悬停预览：以浮层形式展开在标题下方，不改变版面高度；点击后才整体展开进入文档流 */
@media (min-width:821px){
}
.biz-img svg{width:100%;height:100%;display:block}

/* ---------- 工程案例：横向展开条（悬停 / 点击一条展开，其余收缩） ---------- */
.cases{display:flex;gap:8px;height:clamp(300px,32vw,400px)}
.case{position:relative;flex:1 1 0;min-width:0;overflow:hidden;background:var(--dark);transition:flex .55s var(--ease)}
.case.on{flex:3.2 1 0}
.case img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85;transition:opacity .4s}
.case.on img{opacity:1}
.case::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,48,0) 40%,rgba(7,19,48,.88))}
/* 常态：五条等宽，项目名完整可读（允许折两行）；悬停 / 点击才展开 */
.case-cap{position:absolute;left:0;right:0;bottom:0;z-index:2;display:flex;flex-direction:column;gap:6px;padding:16px 16px 18px;color:#fff}
.case-cap b{font-size:14.5px;font-weight:750;line-height:1.4;text-wrap:balance;transition:font-size .3s}
.case.on .case-cap b{font-size:21px}
.case-cap i{font-style:normal;font-size:12.5px;font-weight:700;color:var(--accent-2);max-height:0;opacity:0;overflow:hidden;transition:max-height .4s,opacity .4s}
.case.on .case-cap i{max-height:24px;opacity:1}
.case:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 业务线页眉 ---------- */
.lhero{padding:56px 0 64px;background:var(--bg-soft)}
.lhero-in{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,80px);align-items:center}
.lhero-copy .line-tag{margin-bottom:16px;color:var(--hue)}
.lhero h1{font-size:clamp(32px,4.2vw,52px);line-height:1.12;font-weight:790;letter-spacing:-.025em}
.lhero-copy>p{max-width:560px;margin:20px 0 26px;font-size:16.5px;line-height:1.85;color:var(--text-2)}
.lhero-kv{display:flex;flex-wrap:wrap;margin-bottom:28px;border:1px solid var(--line);background:#fff}
.lhero-kv>div{flex:1 1 120px;padding:16px 18px;border-left:1px solid var(--line)}
.lhero-kv>div:first-child{border-left:0}
.lhero-kv b{display:block;font:400 clamp(22px,2.4vw,32px)/1 var(--mono);letter-spacing:-.04em;color:var(--hue);white-space:nowrap}
.lhero-kv b u{margin-left:3px;text-decoration:none;font-size:.42em;color:var(--text-3)}
.lhero-kv span{display:block;margin-top:8px;font-size:12.5px;font-weight:650;color:var(--text-2)}
.lhero-fig{overflow:hidden;background:#fff;border:1px solid var(--line);aspect-ratio:4/3}
.lhero-fig img{width:100%;height:100%;object-fit:cover}
.lhero-fig-empty{display:none}
.lhero-fig.has-svg{background:transparent;border:1px solid var(--line)}
.lhero-fig.has-svg svg{width:100%;height:100%}

/* ---------- 通用：双栏 / 卡片 / 标签 / 表格 ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center}
.two-col.align-top{align-items:start}
.sub-h{margin-bottom:14px;font-size:15px;font-weight:750;letter-spacing:.01em;color:var(--text)}
.lead-p{font-size:17px;line-height:1.9;color:#33363F}
.note-line{margin-top:14px;font-size:14px;line-height:1.75;color:var(--text-3)}
.note-line a{font-weight:700;color:var(--accent)}
.lcards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lcards.two{grid-template-columns:repeat(2,1fr)}
.lcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.lcard:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#BFCFF0}
.lcard-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-mist)}
.lcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.lcard:hover .lcard-img img{transform:scale(1.04)}
.lcard-body{display:flex;flex-direction:column;flex:1;gap:8px;padding:22px 22px 24px}
.lcard-body h3{font-size:19px;font-weight:760;letter-spacing:-.01em}
.lcard-body .tl{font-size:14px;line-height:1.7;color:var(--text-2)}
.lcard-kv{display:flex;gap:18px;margin-top:6px;padding-top:12px;border-top:1px solid var(--line)}
.lcard-kv div{display:flex;flex-direction:column;gap:3px}
.lcard-kv b{font:400 16px/1 var(--mono);letter-spacing:-.02em;color:var(--text)}
.lcard-kv b u{text-decoration:none;font-size:10px;color:var(--text-3);margin-left:2px}
.lcard-kv small{font-size:10.5px;color:var(--text-3)}
.lcard .go{margin-top:auto;padding-top:14px;font-size:13px;font-weight:700;color:var(--accent)}
.lcard-list{display:flex;flex-wrap:wrap;gap:6px}
.lcard-list span{padding:4px 9px;border:1px solid var(--line);font-size:11.5px;color:var(--text-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{padding:7px 12px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--text-2)}
.chips.types span{padding:10px 16px;font-size:14px;font-weight:650;color:var(--text)}
.tw{overflow-x:auto;border:1px solid var(--line);background:#fff}
.dt{width:100%;min-width:560px;border-collapse:collapse;font-size:14px}
.dt caption{text-align:left;padding:14px 18px 10px;font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}
.dt th{padding:11px 16px;background:var(--bg-soft);border-bottom:1px solid var(--line);font:650 12px/1.5 var(--sans);text-align:left;color:var(--text-2);white-space:nowrap}
.dt td{padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
.dt td.k{font-weight:650;color:var(--text);white-space:nowrap}
.dt tr:last-child td{border-bottom:0}
.dt tr.self td{background:#F0FAF8}.dt tr.self td.k{color:var(--c-coat)}
.spec-3 th{width:24%}.spec-3 td.std{font:500 12px/1.6 var(--mono);color:var(--text-3)}
.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lab-grid img{width:100%;aspect-ratio:4/5;object-fit:cover;border:1px solid var(--line)}

/* ---------- 涂层：接触角演示 ---------- */
.angle-demo{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.angle{padding:22px 22px 18px;background:#fff;border:1px solid var(--line)}
.angle svg{width:100%;height:auto;display:block}
.angle .drop{transition:transform 1.2s var(--ease)}
.angle.treated.in .drop{transform:translateY(-53.2px)}
.angle .tan{opacity:0;transition:opacity .5s}
.angle.in .tan{opacity:1;transition-delay:.1s}
.angle.treated.in .tan{transition-delay:1.1s}
.angle-readout{display:flex;justify-content:space-between;align-items:baseline;margin-top:14px}
.angle-readout b{font:400 30px/1 var(--mono);letter-spacing:-.04em;color:var(--text)}
.angle.treated .angle-readout b{color:var(--c-coat)}
.angle-readout span{font-size:13px;font-weight:650;color:var(--text-2)}
.angle-note{margin-top:8px;font-size:12.5px;line-height:1.7;color:var(--text-3)}

/* ---------- 涂层：厚度对数条 ---------- */
.thick{display:flex;flex-direction:column;gap:10px}
.thick-row{display:grid;grid-template-columns:170px 1fr 90px;gap:14px;align-items:center;font-size:13.5px}
.thick-row .nm{font-weight:650}.thick-row .nm small{display:block;font:600 10px/1.4 var(--mono);color:var(--text-3)}
.thick-bar{position:relative;height:14px;background:var(--bg-mist)}
.thick-bar i{position:absolute;top:0;bottom:0;left:var(--l);width:var(--w);background:#B6C0D4;transform:scaleX(0);transform-origin:left;transition:transform .9s var(--ease)}
.thick.in .thick-bar i{transform:none}
.thick-row.self .thick-bar i{background:var(--c-coat)}
.thick-row.self .nm{color:var(--c-coat)}
.thick-row .rg{font:500 12.5px var(--mono);text-align:right;color:var(--text-2);white-space:nowrap}
.thick-axis{position:relative;height:16px;margin:2px 104px 0 184px;font:500 10.5px var(--mono);color:var(--text-3)}
.thick-axis span{position:absolute;top:0;transform:translateX(-50%);white-space:nowrap}
.thick-axis span:first-child{transform:none}
.thick-axis span:last-child{left:auto!important;right:0;transform:none}

/* ---------- 涂层：流程 / 优势 / 原理 / 用量 / 应用 / 图集 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:#fff}
.steps>div{padding:20px 22px;border-left:1px solid var(--line)}
.steps>div:first-child{border-left:0}
.steps b{display:block;margin-bottom:10px;font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--hue)}
.steps h4{font-size:16.5px;font-weight:750}
.steps p{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--text-2)}
.principle{margin-top:40px}
.principle ol{padding-left:22px;display:flex;flex-direction:column;gap:8px}
.principle li{font-size:15px;line-height:1.8;color:var(--text-2)}
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.adv.four{grid-template-columns:repeat(4,1fr);margin-top:0}
.adv>div{padding:20px 22px;background:#fff;border:1px solid var(--line)}
.adv h4{font-size:15.5px;font-weight:750}
.adv p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2)}
.usage{display:grid;grid-template-columns:repeat(3,1fr);margin-top:22px;border:1px solid var(--line);background:#fff}
.usage>div{padding:16px 20px;border-left:1px solid var(--line)}
.usage>div:first-child{border-left:0}
.usage b{display:block;font:700 11px/1 var(--mono);letter-spacing:.12em;color:var(--text-3);margin-bottom:8px}
.usage span{font-size:14.5px;line-height:1.6}
.conclusion{margin-top:18px;padding:16px 20px;border-left:3px solid var(--c-coat);background:#F0FAF8;font-size:15px;font-weight:650;line-height:1.7}
.apps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.app{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line)}
.app-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-mist)}
.app-img img{width:100%;height:100%;object-fit:cover}
.app-body{display:flex;flex-direction:column;gap:7px;padding:20px 22px 22px}
.app-body h3{font-size:17px;font-weight:750}
.app-products{font-size:13px;font-weight:650;color:var(--text-2)}
.app-body p{font-size:13.5px;line-height:1.75;color:var(--text-2)}
.app-body small{margin-top:auto;padding-top:8px;font:600 11px/1 var(--mono);letter-spacing:.06em;color:var(--text-3)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line)}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#fff;padding:10px}
.gallery figcaption{padding:10px 14px 13px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.6;color:var(--text-2)}

/* ---------- 润滑油：选油向导 / 型号分组 ---------- */
.guide{background:#fff;border:1px solid var(--line);padding:clamp(20px,3vw,34px)}
.guide-step{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 0;border-top:1px solid var(--line)}
.guide-step:first-child{border-top:0;padding-top:0}
.guide-step .lb{flex:0 0 90px;font:700 11px/1 var(--mono);letter-spacing:.12em;color:var(--text-3)}
.guide-step button{border:1px solid var(--line);background:#fff;padding:9px 15px;font:600 13.5px var(--sans);color:var(--text);cursor:pointer;transition:.2s}
.guide-step button:hover{border-color:var(--c-lube);color:var(--c-lube)}
.guide-step button.on{background:var(--c-lube);border-color:var(--c-lube);color:#fff}
.guide-step button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.guide-step[hidden],.guide-result[hidden]{display:none}
.guide-result{margin-top:18px;padding:20px 22px;border-left:3px solid var(--c-lube);background:var(--bg-soft)}
.guide-result b{display:block;font-size:17px;font-weight:750}
.guide-result p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2)}
.guide-result a{display:inline-block;margin-top:10px;font-size:13.5px;font-weight:700;color:var(--accent)}
.mgroup{padding:36px 0;border-top:1px solid var(--line)}
.mgroup:first-child{border-top:0;padding-top:0}
.mgroup-head{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,4vw,60px);margin-bottom:22px}
.mgroup-head h3{font-size:22px;font-weight:760;letter-spacing:-.01em}
.mgroup-head p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2)}
.traits{display:flex;flex-direction:column;gap:7px;list-style:none;padding-top:6px}
.traits li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--text-2)}
.traits li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--c-lube)}
.models{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.models>div{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:14px 18px;background:#fff;border:1px solid var(--line)}
.models b{font:500 15px/1.5 var(--mono);color:var(--text)}
.models span{font-size:13.5px;line-height:1.7;color:var(--text-2)}

/* ---------- FA：四层架构交互 ---------- */
.fa-arch{display:grid;grid-template-columns:.85fr 1.15fr;border:1px solid var(--line);background:#fff}
.fa-layers{display:flex;flex-direction:column;border-right:1px solid var(--line)}
.fa-layers button{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;text-align:left;padding:20px 22px;border:0;border-bottom:1px solid var(--line);background:#fff;font:inherit;color:inherit;cursor:pointer;transition:background .2s,box-shadow .2s}
.fa-layers button:last-child{border-bottom:0}
.fa-layers button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.fa-layers .n{font:500 12px/1.6 var(--mono);color:var(--text-3)}
.fa-layers b{display:block;font-size:16.5px;font-weight:750}
.fa-layers small{display:block;margin-top:3px;font:600 10px/1.4 var(--mono);letter-spacing:.08em;color:var(--text-3)}
.fa-layers p{margin-top:8px;font-size:13px;line-height:1.7;color:var(--text-2)}
.fa-layers button.on{background:var(--bg-soft);box-shadow:inset 3px 0 0 var(--c-fa)}
.fa-series{padding:22px 26px}
.fa-series[hidden]{display:none}
.fa-series h3{margin-bottom:12px;font-size:13.5px;font-weight:700;color:var(--text-3)}
.fa-series ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:6px 22px}
.fa-series li{display:grid;grid-template-columns:1fr auto;gap:2px 10px;padding:9px 0;border-bottom:1px solid var(--line)}
.fa-series li b{font-size:14px;font-weight:650}
.fa-series li span{font:500 11.5px/1.7 var(--mono);color:var(--c-fa);white-space:nowrap}
.fa-series li small{grid-column:1/3;font-size:12.5px;color:var(--text-3)}
.fa-series .more{display:inline-block;margin-top:16px;font-size:13px;font-weight:700;color:var(--accent)}
.fa-stack{width:100%;height:100%;display:block}
.fa-stack .fa-layer{transition:opacity .3s}

/* ---------- 技术百科：按业务线分组 ---------- */
.tjump{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tjump a{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border:1px solid var(--line);background:#fff;font-size:13px;font-weight:650;color:var(--text-2);transition:border-color .2s,color .2s}
.tjump a:hover{border-color:var(--hue);color:var(--hue)}
.tgroup{margin-top:48px;scroll-margin-top:90px}
.tgroup-head{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.tgroup-head .line-tag{color:var(--hue)}
.tgroup-head h2{font-size:22px;font-weight:760;letter-spacing:-.012em}

@media (max-width:1024px){
  .lcards{grid-template-columns:repeat(2,1fr)}
  .adv,.apps,.gallery{grid-template-columns:repeat(2,1fr)}
  .adv.four{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:820px){
  .nav-dd{display:contents}
  /* 竖屏菜单里四线已全部展开可见，「产品中心」退化为不可点的分组标签 */
  .nav-dd>a{pointer-events:none;padding:16px 0 6px;font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}
  .nav-dd>a i{display:none}
  .nav-dd>a::after{display:none}
  /* 案例条竖屏改纵向：折叠 56px，展开 220px（须位于 .cases 基础规则之后才能生效） */
  .cases{flex-direction:column;height:auto;gap:6px}
  .case{flex:0 0 56px;transition:flex .45s var(--ease)}
  .case.on{flex:0 0 220px}
  .case-cap{padding:12px 16px 14px;gap:4px}
  .case.on .case-cap b{font-size:18px}
  .nav-menu{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;min-width:0;padding:0 0 6px 14px}
  /* 桌面的悬停位移规则特异性更高，竖屏下必须显式压回，否则触摸后整块左移被截断 */
  .nav-dd:hover .nav-menu,.nav-dd:focus-within .nav-menu{transform:none}
  .nav-dd:hover>a i,.nav-dd:focus-within>a i{transform:none}
  /* 竖屏：2×2 紧凑标题格（短标签），展开内容以整行形式出现在格子下方 */
  .lhero-in,.two-col,.mgroup-head,.angle-demo,.fa-arch{grid-template-columns:1fr}
  .fa-layers{border-right:0;border-bottom:1px solid var(--line)}
  .steps,.usage{grid-template-columns:1fr}
  .steps>div,.usage>div{border-left:0;border-top:1px solid var(--line)}
  .steps>div:first-child,.usage>div:first-child{border-top:0}
  .thick-row{grid-template-columns:120px 1fr 74px}
  .thick-axis{margin:2px 88px 0 134px}
  .models{grid-template-columns:1fr}
}
@media (max-width:560px){
  .lcards,.lcards.two,.adv,.adv.four,.apps,.gallery,.fa-series ul,.lab-grid{grid-template-columns:1fr}
  .lhero-kv>div{flex-basis:100%;border-left:0;border-top:1px solid var(--line)}
  .lhero-kv>div:first-child{border-top:0}
  .models>div{grid-template-columns:1fr;gap:4px}
  .thick-row{grid-template-columns:1fr;gap:6px}.thick-row .rg{text-align:left}.thick-axis{margin:2px 0 0}
}

/* ---------- 工程案例档案（解决方案页）：一览表 + 五份四栏项目档案 + 自动化设备项目 ---------- */
.project-section .sec-head{margin-bottom:30px}
.project-section .tw{margin-bottom:44px}
.dt.proj-sum td.k{font-weight:750}
.proj-list{display:grid;gap:18px}
.proj{background:#fff;border:1px solid var(--line)}
.proj-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:20px 24px;border-bottom:1px solid var(--line)}
.proj-head h3{font-size:20px;font-weight:760;letter-spacing:-.01em;text-wrap:balance}
.proj-head p{margin-top:4px;font-size:13px;color:var(--text-3)}
.proj-src{flex:none;margin-top:5px;font-size:12.5px;font-weight:700;color:var(--accent);white-space:nowrap}
.proj-body{display:grid;grid-template-columns:300px 1fr}
.proj-photo{margin:0;min-height:280px;border-right:1px solid var(--line);background:var(--dark)}
.proj-photo img{display:block;width:100%;height:100%;object-fit:cover}
.proj-grid{display:grid;grid-template-columns:1fr 1fr}
.proj-cell{padding:18px 22px 20px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.proj-cell:nth-child(-n+2){border-top:0}
.proj-cell:nth-child(odd){border-left:0}
.proj-cell:last-child{background:var(--bg-soft)}
.proj-cell h4{margin-bottom:10px;font-size:13px;font-weight:760;letter-spacing:.04em;color:var(--text)}
.proj-cell ul{list-style:none;display:grid;gap:6px}
.proj-cell li{position:relative;padding-left:14px;font-size:13.5px;line-height:1.6;color:var(--text-2)}
.proj-cell li::before{content:"";position:absolute;left:0;top:.75em;width:5px;height:5px;background:var(--brand)}
.proj-cell:last-child li{color:var(--text)}
.proj-more-h{margin:52px 0 18px;font-size:20px;font-weight:760}
.proj-eq{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.proj-eq-card{margin:0;background:#fff;border:1px solid var(--line)}
.proj-eq-card img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:#fff}
.proj-eq-card figcaption{padding:12px 14px;font-size:14px;font-weight:700}
@media (max-width:1024px){
  .proj-body{grid-template-columns:240px 1fr}
  .proj-cell{padding:16px 18px 18px}
}
@media (max-width:820px){
  .proj-body{grid-template-columns:1fr}
  .proj-photo{min-height:0;aspect-ratio:2/1;border-right:0;border-bottom:1px solid var(--line)}
  .proj-head{padding:16px 18px}
  .proj-head h3{font-size:18px}
  .proj-eq{grid-template-columns:1fr 1fr}
  .proj-more-h{margin-top:40px}
}
@media (max-width:560px){
  .proj-grid{grid-template-columns:1fr}
  .proj-cell{border-left:0;border-top:1px solid var(--line)}
  .proj-cell:first-child{border-top:0}
  .proj-eq{grid-template-columns:1fr}
}
/* 一览表在窄屏不逐字折行：整表横向滚动（.tw 已 overflow:auto） */
@media (max-width:820px){
  .dt.proj-sum th,.dt.proj-sum td{white-space:nowrap}
  .dt.proj-sum td.k{white-space:normal;min-width:150px}
}

/* ============ 二级页改版：hero v2 / 事实带 / 流程步骤 / 系列图标块 / 表格增强 ============ */
.lhero{padding:52px 0 60px}
.lhero-in{grid-template-columns:1.05fr .95fr}
.lhero h1{font-size:clamp(30px,3.6vw,48px);text-wrap:balance}
.lhero h1 em{font-style:normal;color:var(--hue)}
.lhero-copy>p{max-width:540px}
.lhero-creds{margin-top:22px;font-size:12.5px;letter-spacing:.02em;color:var(--text-3)}
.lhero-fig{position:relative}
.lhero-fig.wide{aspect-ratio:16/10}
.lhero-fig img{animation:lhero-zoom 1.4s var(--ease) both}
@keyframes lhero-zoom{from{transform:scale(1.06);opacity:.55}to{transform:none;opacity:1}}
.lhero-float{position:absolute;left:18px;bottom:18px;z-index:2;padding:14px 18px;background:rgba(255,255,255,.94);border:1px solid var(--line);backdrop-filter:blur(6px);box-shadow:0 10px 30px rgba(7,19,48,.12)}
.lhero-float b{display:block;font:400 30px/1 var(--mono);letter-spacing:-.04em;color:var(--hue);white-space:nowrap}
.lhero-float b u{margin-left:3px;text-decoration:none;font-size:.45em;color:var(--text-3)}
.lhero-float span{display:block;margin-top:6px;font-size:12px;font-weight:650;color:var(--text-2)}
.lhero-fig.has-svg .lhero-float{left:auto;right:18px}
/* 事实带 */
.fband{padding:38px 0 40px;background:var(--dark);color:#fff}
.fband-title{margin-bottom:22px;font:700 11px/1 var(--mono);letter-spacing:.16em;color:#8FA3D6}
.fband-grid{display:grid;grid-template-columns:repeat(var(--n,5),1fr);gap:18px}
.fband-item{padding:4px 0 0 18px;border-left:1px solid rgba(255,255,255,.14)}
.fband-item:first-child{padding-left:0;border-left:0}
.fband-item b{display:block;font:400 clamp(30px,3.4vw,46px)/1 var(--mono);letter-spacing:-.04em;white-space:nowrap}
.fband-item b u{margin-left:3px;text-decoration:none;font-size:.42em;color:#B9C9F0}
.fband-item>span{display:block;margin-top:10px;font-size:13px;color:#B9C9F0}
.fband-item b span{display:inline;font:inherit;color:inherit;margin:0}
.fband-item.hi b{color:#8FB4FF}
.l-coat .fband-item.hi b{color:#5EEAD4}.l-lube .fband-item.hi b{color:#FBBF24}.l-fa .fband-item.hi b{color:#C4B5FD}
.fband-note{margin-top:18px;font-size:12.5px;color:#8FA3D6}
/* 流程步骤 */
.stepper{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.stepper::before{content:"";position:absolute;left:14%;right:14%;top:34px;height:1px;background:var(--line)}
.step{position:relative;padding:0 8px;text-align:center}
.step-n{position:relative;display:grid;place-items:center;width:68px;height:68px;margin:0 auto 18px;background:#fff;border:1.5px solid var(--hue,var(--brand));color:var(--hue,var(--brand))}
.step-n span{font:600 13px/1 var(--mono)}
.step-n svg{position:absolute;right:-9px;bottom:-9px;width:28px;height:28px;padding:5px;background:var(--hue,var(--brand));color:#fff;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.step h4{font-size:17px;font-weight:760}
.step-big{display:block;margin-top:8px;font:400 clamp(24px,2.6vw,34px)/1 var(--mono);letter-spacing:-.04em;color:var(--hue,var(--brand))}
.step p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2)}
/* 系列图标块 */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.tiles.big{grid-template-columns:repeat(3,1fr);gap:14px}
.tile{display:flex;flex-direction:column;gap:10px;padding:14px 14px 13px;background:#fff;border:1px solid var(--line);color:var(--text);transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.tile:hover{transform:translateY(-3px);border-color:var(--hue,var(--brand));box-shadow:var(--shadow)}
.tile-ic{display:grid;place-items:center;width:40px;height:40px;background:var(--bg-soft);color:var(--hue,var(--brand))}
.tile-ic svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tile-t{display:flex;flex-direction:column;gap:5px}
.tile-t b{font-size:13.5px;font-weight:700;line-height:1.35}
.tile p{font-size:12.5px;line-height:1.65;color:var(--text-2)}
.tiles.big .tile{padding:18px 18px 17px}
.tiles.big .tile-ic{width:48px;height:48px}.tiles.big .tile-ic svg{width:28px;height:28px}
.tiles.big .tile-t b{font-size:15.5px}
.cd{display:inline-block;padding:2px 7px;border:1px solid var(--line);background:var(--bg-soft);font:500 11px/1.6 var(--mono);letter-spacing:.02em;color:var(--text-2);white-space:nowrap}
.tile .cd{align-self:flex-start;border-color:transparent;color:var(--hue,var(--brand));background:color-mix(in srgb,var(--hue,var(--brand)) 10%,#fff)}
/* FA 架构板：四层同屏，每层一行图标块 */
.fa-board{display:grid;gap:12px}
.fa-row{display:grid;grid-template-columns:250px 1fr;background:#fff;border:1px solid var(--line)}
.fa-row-h{display:flex;flex-direction:column;gap:6px;padding:22px 22px 20px;border-right:1px solid var(--line);background:var(--bg-soft);box-shadow:inset 4px 0 0 var(--c-fa)}
.fa-row-h .n{font:600 11px/1 var(--mono);letter-spacing:.14em;color:var(--text-3)}
.fa-row-h h3{font-size:19px;font-weight:760}
.fa-row-h small{font:600 10px/1.4 var(--mono);letter-spacing:.08em;color:var(--text-3)}
.fa-row-h p{margin-top:6px;font-size:13px;line-height:1.7;color:var(--text-2)}
.fa-row-h a{margin-top:auto;padding-top:12px;font-size:13px;font-weight:700;color:var(--accent)}
.fa-row .tiles{padding:12px;gap:8px}
.fa-stack .fa-layer.on text{fill:#4C1D95}
/* 协议徽章 / 事实清单 / 时间线 / 行业格 */
.protos{display:flex;flex-wrap:wrap;gap:10px}
.protos span{padding:12px 18px;border:1px solid var(--line);background:#fff;font:600 14px/1 var(--mono);letter-spacing:.02em;color:var(--text)}
.protos span::before{content:"";display:inline-block;width:8px;height:8px;margin-right:10px;background:var(--hue,var(--brand));vertical-align:1px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:0 26px}
.facts div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.facts div span{color:var(--text-3)}.facts div b{font-weight:650;text-align:right}
.timeline{display:grid;gap:8px}
.timeline div{display:grid;grid-template-columns:86px 1fr;gap:12px;font-size:13.5px;line-height:1.65;color:var(--text-2)}
.timeline b{font:500 13px/1.65 var(--mono);color:var(--hue,var(--brand))}
.ind-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.ind{display:block;padding:18px 18px 16px;background:#fff;border:1px solid var(--line);color:var(--text);transition:transform .3s var(--ease),border-color .3s}
.ind b{display:block;font-size:15px;font-weight:750}
.ind p{margin-top:6px;font-size:13px;line-height:1.65;color:var(--text-2)}
a.ind:hover{transform:translateY(-3px);border-color:var(--hue,var(--brand))}
/* 产品卡标签行、服务优势编号、应用五列 */
.lcard-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.lcard-tags span{padding:4px 9px;background:var(--bg-soft);border:1px solid var(--line);font-size:11.5px;font-weight:650;color:var(--text-2)}
.adv .idx{display:block;margin-bottom:10px;font:600 11px/1 var(--mono);letter-spacing:.14em;color:var(--hue,var(--brand))}
.apps.five{grid-template-columns:repeat(5,1fr);gap:12px}
.apps.five .app-body{padding:14px 16px 16px;gap:5px}
.apps.five .app-body h3{font-size:15px}
.apps.five .app-products{font-size:12px}
.app-img.ph{display:grid;place-items:center;aspect-ratio:16/10;background:var(--bg-soft);color:var(--hue,var(--brand))}
.app-img.ph svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
/* 表格：斑马行、悬停行、标题更可读；self 高亮仍优先 */
.dt tbody tr:nth-child(even) td{background:#FAFBFE}
.dt tbody tr:hover td{background:#F3F6FC}
.dt tbody tr.self td{background:#F0FAF8}
.dt caption{font-size:12px;letter-spacing:.1em;color:var(--text-2)}
.spec tbody tr:nth-child(even) th,.spec tbody tr:nth-child(even) td{background:#FAFBFE}
@media (max-width:1024px){
  .fband-grid{grid-template-columns:repeat(3,1fr);gap:22px 18px}
  .fa-row{grid-template-columns:210px 1fr}
  .tiles.big{grid-template-columns:repeat(2,1fr)}
  .apps.five{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:820px){
  .lhero{padding:36px 0 44px}
  .lhero-in{grid-template-columns:1fr}
  .fband{padding:30px 0 32px}
  .fband-grid{grid-template-columns:repeat(2,1fr)}
  .fband-item{padding-left:0;border-left:0}
  .stepper{grid-template-columns:1fr;gap:14px}
  .stepper::before{display:none}
  .step{display:grid;grid-template-columns:68px 1fr;gap:6px 18px;text-align:left}
  .step-n{grid-row:1/4;margin:0}
  .step-big{margin-top:2px}
  .fa-row{grid-template-columns:1fr}
  .fa-row-h{border-right:0;border-bottom:1px solid var(--line);box-shadow:inset 0 4px 0 var(--c-fa)}
  .tiles{grid-template-columns:repeat(auto-fill,minmax(132px,1fr))}
  .facts{grid-template-columns:1fr}
  .lhero-float{left:12px;bottom:12px;padding:10px 14px}
  .lhero-float b{font-size:24px}
  .apps.five{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .fband-item b{font-size:26px}
  .tiles.big{grid-template-columns:1fr}
  .protos span{padding:10px 12px;font-size:12.5px}
  .lhero-creds{font-size:11.5px}
  .apps.five{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){.lhero-fig img{animation:none}}
.lhero-mosaic{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:6px;width:100%;height:100%;padding:6px;background:#E9EDF5}
.lhero-mosaic img{width:100%;height:100%;object-fit:contain;background:#fff;mix-blend-mode:multiply;animation:lhero-zoom 1.2s var(--ease) both}
@media (max-width:820px){
  /* 分节导航：锚点多时横向滑动，不折行 */
  .pdbar-in{overflow-x:auto;gap:16px;scrollbar-width:none}
  .pdbar-in::-webkit-scrollbar{display:none}
  .pdbar .nm,.pdbar a.anchor,.pdbar .pd-ask{flex:none;white-space:nowrap}
  .pdbar .pd-ask{padding-right:16px}
}
@media (max-width:560px){
  .apps.five{grid-template-columns:repeat(2,1fr);gap:10px}
  .apps.five .app-body{padding:10px 12px 12px}
}

/* ============ 首页 hero 改版：抽象主张 + 线描图；四大业务并列选项卡悬浮在 hero 底边；合作伙伴改浅色带 ============ */
.hero-inner{display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(28px,4vw,64px);align-items:center;padding-top:clamp(56px,6.5vw,88px)}
.hero-copy{position:relative;z-index:3}
.hero-title{max-width:none;font-size:clamp(36px,4.8vw,62px);line-height:1.12}
.hero-lede{max-width:560px}
/* 四大业务并列选项卡 */
/* 合作伙伴浅色带 */
.partners-band{padding:26px 0 28px;background:#fff;border-bottom:1px solid var(--line);overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.partners-band .partner-logo{height:52px}
.partners-band .partner-logo img{max-width:150px;max-height:44px;filter:grayscale(1);opacity:.55;transition:.3s}
.partners-band .partner-logo:hover img{filter:none;opacity:1}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr}
}
@media (max-width:820px){
  .hero-inner{padding-top:40px}
  .partners-band{padding:18px 0 20px}
}
@media (max-width:560px){
}
@media (prefers-reduced-motion:reduce){
}

/* ============ 首页 hero：右半幅满铺业务大图（仅左侧羽化）+ 左下角特粗业务标题 + 等高说明面板 + 无边框选项卡 ============ */
.l-agv{--hue-l:#8FB4FF}.l-coat{--hue-l:#5EEAD4}.l-lube{--hue-l:#FBBF24}.l-fa{--hue-l:#C4B5FD}
.home-hero{position:relative;padding-bottom:0;overflow:hidden}
.hero-inner{position:static;display:grid;grid-template-columns:.88fr 1.12fr;gap:clamp(28px,4vw,64px);align-items:stretch;min-height:600px;padding-top:clamp(48px,6vw,80px);padding-bottom:0}
.hero-copy{position:relative;z-index:3;align-self:center;padding:0 0 60px}
.hero-stage{position:static;display:flex;flex-direction:column;justify-content:flex-end}
.stage-media{position:absolute;top:0;bottom:0;left:50%;right:0;z-index:2;pointer-events:none}
.stage-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.06);transition:opacity .8s var(--ease),transform 7s linear;-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 28%);mask-image:linear-gradient(90deg,transparent 0,#000 28%)}
.stage-media img.on{opacity:1;transform:scale(1)}
.dock{transition:opacity .35s var(--ease),transform .35s var(--ease)}
.dock.hide-hero{opacity:0;transform:translateY(14px);pointer-events:none}
.stage-body{position:relative;z-index:3;isolation:isolate;padding:0 0 22px}
.stage-body::before{content:"";position:absolute;z-index:-1;inset:-84px -160px -80px -200px;background:linear-gradient(90deg,rgba(4,14,40,0) 0,rgba(4,14,40,.6) 20%,rgba(4,14,40,.94) 42%,rgba(4,14,40,.94) 100%);-webkit-mask-image:linear-gradient(180deg,transparent 0,#000 96px);mask-image:linear-gradient(180deg,transparent 0,#000 96px)}
.stage-panels{display:grid}
.stage-panel{grid-area:1/1;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .5s var(--ease),transform .5s var(--ease),visibility 0s .5s}
.stage-panel.on{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.stage-title{display:block;font-size:clamp(34px,3.8vw,54px);font-weight:900;line-height:1.08;letter-spacing:-.03em;color:#fff}
.stage-detail{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .5s var(--ease),opacity .35s var(--ease)}
.stage-detail>div{overflow:hidden;min-height:0}
.stage-panel.open .stage-detail,html:not(.js) .stage-detail{grid-template-rows:1fr;opacity:1}
.stage-panel p{max-width:520px;margin-top:12px;font-size:14.5px;line-height:1.7;color:#C2D2F2}
.stage-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.stage-tags span{padding:5px 10px;border:1px solid rgba(255,255,255,.22);font-size:12px;color:#DCE5F7;background:rgba(255,255,255,.04)}
.stage-go{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--hue-l)}
.stage-go i{font-style:normal;display:inline-block;transition:transform .25s}
.stage-go:hover i{transform:translateX(4px)}
.stage-tabs{display:flex;margin:22px -10px 0}
.stab{position:relative;flex:1 1 0;min-width:0;display:block;padding:14px 10px 2px;color:#B9C9F0;transition:color .3s}
.stab.on,.stab:hover{color:#fff}
.stab-bar{position:absolute;left:10px;right:10px;top:0;height:2px;background:rgba(255,255,255,.16);overflow:hidden}
.stab-bar::after{content:"";position:absolute;left:0;top:0;height:100%;width:0;background:var(--hue-l)}
.stab.on .stab-bar::after{width:100%}
.hero-stage.run .stab.on .stab-bar::after{width:0;animation:stage-progress var(--dur,5s) linear forwards}
@keyframes stage-progress{to{width:100%}}
.stab-n{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:750;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stab-n .nm-dot{background:var(--hue-l);flex:none;opacity:.55;transition:opacity .3s}
.stab.on .stab-n .nm-dot{opacity:1}
.stab-n .abbr{display:none}
.stab-n::after{content:"";flex:none;width:6px;height:6px;margin-left:2px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:translateY(-2px) rotate(45deg);opacity:0;transition:opacity .3s,transform .3s}
.stab.on .stab-n::after{opacity:.75}
.hero-stage.expanded .stab.on .stab-n::after{transform:translateY(1px) rotate(225deg)}
.stab:focus-visible{outline:2px solid #fff;outline-offset:-2px}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:0;min-height:0;padding-top:40px}
  .hero-copy{display:contents}
  .hero-title{order:1;font-size:clamp(36px,10vw,56px);line-height:1.14}
  .hero-lede{order:2;margin:16px 0 0;font-size:15.5px}
  .hero-stage{order:3;margin-top:4px}
  .hero-actions{order:4;margin:22px 0 30px}
  .hero-stage{position:relative}
  /* 图片紧接文案：顶边羽化融进上方文字，底边羽化承接压在其上的业务标题 */
  .stage-media{position:relative;left:0;right:0;top:0;bottom:auto;aspect-ratio:auto;height:clamp(240px,68vw,330px);margin:0 calc(-1 * var(--pad))}
  .stage-media img{-webkit-mask-image:linear-gradient(180deg,transparent 0,#000 20%,#000 64%,transparent 100%);mask-image:linear-gradient(180deg,transparent 0,#000 20%,#000 64%,transparent 100%)}
  .stage-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:46%;background:linear-gradient(180deg,rgba(4,20,58,0) 0,rgba(4,20,58,.45) 46%,rgba(4,20,58,.8) 100%)}
  .stage-body{padding:0}
  .stage-body::before{display:none}
  .stage-tabs{margin:16px -6px 0}
  .stab-n::after{margin-left:1px}
  .stage-panels{position:relative;margin-top:-92px}
  .stage-title{font-size:clamp(28px,7.2vw,40px)}
  .stage-panel p{font-size:13.5px}
  .stab{padding:12px 6px 0}
  .stab-n{font-size:13px;justify-content:center}
  .stab-n .full{display:none}.stab-n .abbr{display:inline}
  .stab-bar{left:6px;right:6px}
  .hero-actions .btn{flex:1 1 0;justify-content:center}
  /* logo 墙沿用桌面的浅色带：logo 是白底图，深底反白会糊成暗方块 */
  .partners-band{padding:18px 0 20px}
}
@media (max-width:560px){
  .stab-n{font-size:12px;gap:5px}
}
@media (prefers-reduced-motion:reduce){
  .stage-media img{transition:opacity .3s;transform:none}
  .hero-stage.run .stab.on .stab-bar::after{animation:none;width:100%}
}

/* ============ 关于我们：公司简介配图 / 事实清单 / 六项能力图标 ============ */
.about-story-grid{grid-template-columns:.95fr 1.05fr;align-items:start}
.about-story-media .sec-head{margin-bottom:22px}
.about-figure{margin:0;overflow:hidden;aspect-ratio:4/3;background:var(--bg-mist)}
.about-figure img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.about-figure:hover img{transform:scale(1.03)}
.about-story-media .vision-quote{margin-top:18px}
.about-prose{padding-top:6px}
.about-facts{margin-top:30px;border-top:1px solid var(--line)}
.about-facts>div{display:grid;grid-template-columns:104px 1fr;gap:16px;padding:13px 0;border-bottom:1px solid var(--line)}
.about-facts dt{font-size:13px;font-weight:700;color:var(--text-3)}
.about-facts dd{margin:0;font-size:14.5px;line-height:1.65;color:var(--text)}
/* 六项核心能力：编号退为角标，方块里放对应图标 */
.service-card{position:relative;display:flex;flex-direction:column}
.service-card .sc-ic{display:grid;place-items:center;width:48px;height:48px;background:#EEF2FD;color:var(--brand);transition:background .3s,color .3s}
.service-card .sc-ic svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.service-card:hover .sc-ic{background:var(--brand);color:#fff}
.service-card .sc-n{position:absolute;right:20px;top:20px;font:700 11px/1 var(--mono);color:var(--text-3)}
.service-card h3{margin:20px 0 10px}
@media (max-width:1024px){
  .about-story-grid{grid-template-columns:1fr}
  .about-figure{aspect-ratio:16/9}
}
@media (max-width:820px){
  html{scroll-padding-top:86px}
  html:has(.pdbar){scroll-padding-top:142px}
  .about-facts>div{grid-template-columns:92px 1fr;gap:12px}
}