/* ETAG TECH site2 — design system (see ../SITE2-DESIGN.md) */
:root{
  --blue:#2370B8;
  --blue-deep:#1B4E9B;
  --navy:#0C2340;
  --cyan:#39B5E8;
  --ink:#1A2B3C;
  --muted:#5B6B7B;
  --bg:#ffffff;
  --bg-soft:#F4F8FC;
  --line:#E3EBF3;
  --grad:linear-gradient(135deg,#1B4E9B,#2370B8 55%,#39B5E8);
  --shadow:0 2px 10px rgba(12,35,64,.06);
  --shadow-lg:0 14px 34px rgba(12,35,64,.14);
  --radius:16px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","PingFang SC","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--font);color:var(--ink);background:var(--bg);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-deep)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ── Header ─────────────────────────────── */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .25s,border-color .25s}
.site-header.scrolled{border-color:var(--line);box-shadow:var(--shadow)}
.nav{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:40px;width:auto}
.nav-links{display:flex;gap:6px;list-style:none;margin-inline-start:auto}
.nav-links a{display:block;padding:9px 14px;border-radius:10px;color:var(--ink);font-weight:600;font-size:15px}
.nav-links a:hover{background:var(--bg-soft);color:var(--blue)}
.nav-links a.active{color:var(--blue)}
.nav-cta{flex-shrink:0}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;line-height:1.4;transition:transform .18s,box-shadow .18s,background .18s;cursor:pointer;border:0}
.btn-primary{background:var(--grad);color:#fff !important;box-shadow:0 6px 18px rgba(35,112,184,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(35,112,184,.45)}
.btn-ghost{border:2px solid rgba(255,255,255,.75);color:#fff !important}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-outline{border:2px solid var(--blue);color:var(--blue) !important}
.btn-outline:hover{background:var(--blue);color:#fff !important}
.lang-switch{display:flex;gap:2px;background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:3px;flex-shrink:0}
.lang-switch a{display:block;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:800;letter-spacing:.04em;color:var(--muted)}
.lang-switch a.on{background:var(--blue);color:#fff}
.lang-switch a:not(.on):hover{color:var(--blue)}
.nav-toggle{display:none;margin-inline-start:auto;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.nav-toggle span{position:absolute;left:10px;right:10px;height:2.5px;border-radius:2px;background:var(--navy);transition:transform .25s,opacity .25s}
.nav-toggle span:nth-child(1){top:14px}.nav-toggle span:nth-child(2){top:21px}.nav-toggle span:nth-child(3){top:28px}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ── Hero ───────────────────────────────── */
.hero{position:relative;background:var(--grad);color:#fff;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:88px 0 96px}
.hero-eyebrow{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);padding:6px 16px;border-radius:999px;font-size:13.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:22px}
.hero h1{font-size:clamp(34px,4.6vw,58px);line-height:1.12;letter-spacing:-.015em;font-weight:800;margin-bottom:20px}
.hero p.lead{font-size:19px;line-height:1.65;color:rgba(255,255,255,.88);max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-media{position:relative}
.hero-media img{border-radius:20px;box-shadow:0 24px 60px rgba(4,16,34,.45)}
.hero-badge{position:absolute;inset-inline-start:-18px;bottom:-18px;background:#fff;color:var(--navy);border-radius:14px;box-shadow:var(--shadow-lg);padding:14px 20px;font-weight:700;font-size:14.5px;display:flex;align-items:center;gap:10px}
.hero-badge .dot{width:10px;height:10px;border-radius:50%;background:#35C46A;box-shadow:0 0 0 4px rgba(53,196,106,.22)}
.page-hero{background:var(--grad);color:#fff;padding:72px 0 64px}
.page-hero h1{font-size:clamp(30px,4vw,46px);font-weight:800;letter-spacing:-.01em;margin-bottom:14px}
.page-hero p{font-size:18px;color:rgba(255,255,255,.88);max-width:720px}

/* ── Stats band ─────────────────────────── */
.stats{background:var(--navy);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:44px 0;text-align:center}
.stat b{display:block;font-size:clamp(30px,3.4vw,44px);font-weight:800;background:linear-gradient(90deg,#7CC8F5,#39B5E8);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:rgba(255,255,255,.72);font-size:14.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}

/* ── Sections ───────────────────────────── */
.section{padding:88px 0}
.section.soft{background:var(--bg-soft)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-block;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.2;letter-spacing:-.01em;color:var(--navy);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:17px}

/* ── Cards & grids ──────────────────────── */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .22s,box-shadow .22s;overflow:hidden}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-body{padding:26px}
.card h3{font-size:19px;color:var(--navy);margin-bottom:10px;letter-spacing:-.005em}
.card p{color:var(--muted);font-size:15px}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-media img{transform:scale(1.045)}
/* .fit = 产品图/白底拼贴图:完整等比显示,不裁剪不拉伸 */
.card-media.fit{background:#fff;padding:18px}
.card-media.fit img{object-fit:contain}
.icon-tile{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(35,112,184,.12),rgba(57,181,232,.16));display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.icon-tile svg{width:26px;height:26px;stroke:var(--blue)}
.feature-list{list-style:none;margin-top:12px}
.feature-list li{position:relative;padding-inline-start:26px;color:var(--muted);font-size:15px;margin-bottom:8px}
.feature-list li::before{content:"";position:absolute;inset-inline-start:0;top:9px;width:14px;height:8px;border-left:2.5px solid var(--cyan);border-bottom:2.5px solid var(--cyan);transform:rotate(-45deg)}

/* split rows (text + image) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:88px}
.split-media img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.split h3{font-size:clamp(22px,2.6vw,30px);color:var(--navy);letter-spacing:-.01em;margin-bottom:14px}
.split p{color:var(--muted)}

/* ── Products page ──────────────────────── */
.series-intro{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.series-intro h2{font-size:clamp(24px,3vw,34px);color:var(--navy);letter-spacing:-.01em}
.series-intro .count{color:var(--muted);font-weight:600;font-size:15px}
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .22s,box-shadow .22s;display:flex;flex-direction:column}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.spec-media{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;background:#fff;padding:18px;border-bottom:1px solid var(--line)}
.spec-media img{max-height:100%;width:auto;object-fit:contain}
.spec-body{padding:18px 20px 20px;flex:1}
.spec-size{display:inline-block;background:linear-gradient(135deg,rgba(35,112,184,.1),rgba(57,181,232,.14));color:var(--blue-deep);font-weight:800;font-size:13px;border-radius:8px;padding:3px 10px;margin-bottom:8px}
.spec-body h3{font-size:16.5px;color:var(--navy);margin-bottom:10px}
.spec-body dl{display:grid;grid-template-columns:auto 1fr;gap:3px 12px;font-size:13.2px}
.spec-body dt{color:var(--muted)}
.spec-body dd{color:var(--ink);font-weight:600;text-align:end}
.color-dots{display:inline-flex;gap:4px;vertical-align:middle}
.color-dots i{width:11px;height:11px;border-radius:50%;display:inline-block;border:1px solid rgba(0,0,0,.18)}
.dot-b{background:#1A1A1A}.dot-w{background:#fff}.dot-r{background:#E23B2E}.dot-y{background:#F5C400}.dot-g{background:#2FA84F}

/* accessories */
.acc-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.acc-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;text-align:center;box-shadow:var(--shadow)}
.acc-card .acc-img{height:110px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.acc-card img{max-height:100%;width:auto;object-fit:contain}
.acc-card span{font-size:13.5px;font-weight:600;color:var(--muted)}

/* ── Solutions page ─────────────────────── */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);position:relative}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:18px;inset-inline-end:22px;font-size:34px;font-weight:800;color:rgba(35,112,184,.14)}
.step h4{color:var(--navy);font-size:17px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.vs-col{border-radius:var(--radius);padding:28px;border:1px solid var(--line)}
.vs-col.before{background:#FBF6F2}
.vs-col.after{background:linear-gradient(160deg,rgba(35,112,184,.06),rgba(57,181,232,.1))}
.vs-col h4{font-size:17px;margin-bottom:14px;color:var(--navy)}
.vs-col ol{margin-inline-start:20px;color:var(--muted);font-size:14.5px}
.vs-col li{margin-bottom:6px}
.vs-note{margin-top:16px;font-weight:700;font-size:14.5px;color:var(--blue-deep)}
.vs-col.before .vs-note{color:#B0662D}
.topology{background:var(--navy);border-radius:20px;padding:40px;color:#fff;overflow-x:auto}
.topology svg{min-width:680px;width:100%;height:auto;display:block}

/* ── Logo wall / cases ──────────────────── */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.logo-wall .lg{background:#fff;border:1px solid var(--line);border-radius:12px;height:84px;display:flex;align-items:center;justify-content:center;padding:14px;box-shadow:var(--shadow)}
.logo-wall .lg img{max-height:100%;max-width:100%;width:auto;object-fit:contain;filter:grayscale(1);opacity:.72;transition:filter .25s,opacity .25s}
.logo-wall .lg:hover img{filter:none;opacity:1}
.logo-more{margin-top:18px;text-align:center;color:var(--muted);font-size:14.5px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.spec-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.case{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3;background:var(--bg-soft)}
.case img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.case:hover img{transform:scale(1.05)}
.case figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 18px 14px;background:linear-gradient(transparent,rgba(6,20,40,.82));color:#fff;font-weight:700;font-size:14.5px}

/* ── CTA band ───────────────────────────── */
.cta-band{background:var(--grad);color:#fff;border-radius:24px;padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:var(--shadow-lg)}
.cta-band h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.85)}

/* ── Contact ────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.contact-card h3{color:var(--navy);font-size:20px;margin-bottom:6px}
.contact-card .sub{color:var(--muted);font-size:14.5px;margin-bottom:22px}
.contact-row{display:flex;gap:14px;align-items:flex-start;padding:13px 0;border-top:1px solid var(--line)}
.contact-row svg{width:20px;height:20px;stroke:var(--blue);flex-shrink:0;margin-top:4px}
.contact-row a{font-weight:600}
.contact-row .lbl{display:block;font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}

/* ── Footer ─────────────────────────────── */
.site-footer{background:var(--navy);color:rgba(255,255,255,.78);margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:16px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:9px}
.site-footer a{color:rgba(255,255,255,.78)}
.site-footer a:hover{color:#7CC8F5}
.footer-brand img{height:38px;margin-bottom:16px}
.footer-brand p{font-size:14.5px;max-width:300px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:13.5px;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ── Reveal animation ───────────────────── */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ── Responsive ─────────────────────────── */
@media (max-width:1080px){
  .grid-4,.spec-grid,.spec-grid.cols-3{grid-template-columns:repeat(3,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .case-grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .acc-grid,.logo-wall{grid-template-columns:repeat(4,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav{height:64px}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);flex-direction:column;padding:12px 16px 18px;gap:2px}
  body.nav-open .nav-links{display:flex}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .hero-inner{grid-template-columns:1fr;padding:56px 0 64px;gap:36px}
  .hero-badge{inset-inline-start:12px;bottom:-14px;padding:10px 14px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:18px;padding:34px 0}
  .section{padding:60px 0}
  .grid-2,.grid-3,.grid-4,.split,.vs,.steps,.contact-grid,.case-grid,.case-grid.cols-4{grid-template-columns:1fr}
  .split{gap:28px}
  .split + .split{margin-top:56px}
  .spec-grid,.spec-grid.cols-3{grid-template-columns:repeat(2,1fr)}
  .lang-switch a{padding:5px 10px}
  .acc-grid,.logo-wall{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:36px 26px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 36px}
}
@media (max-width:420px){.spec-grid{grid-template-columns:1fr}}

/* ── Arabic (RTL) ───────────────────────── */
/* 阿文是连写文字:任何 letter-spacing 都会破坏字形连接,全部归零 */
html[lang="ar"] *{letter-spacing:0 !important}
html[lang="ar"] body{font-family:"Segoe UI",Tahoma,"Noto Naskh Arabic","Noto Sans Arabic","Geeza Pro",Arial,sans-serif}
/* 规格值(尺寸/分辨率/温度)是数字串,保持从左向右读 */
html[lang="ar"] .spec-body dd{direction:ltr;text-align:left}
html[lang="ar"] .meta b,html[lang="ar"] .hash{direction:ltr;unicode-bidi:isolate}