:root{
  --teal:#2DA8A8; --teal-d:#1f8080; --teal-l:#3BC9C9;
  --bg:#ffffff; --bg-soft:#f5f8f8;
  --ink:#1a2332; --muted:#5a6776; --line:#e3ebea;
  --amber:#f5a623; --shadow:0 4px 20px rgba(45,168,168,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 28px}

/* NAV */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;padding:11px 28px;max-width:1200px;margin:0 auto;gap:24px}
.brand{display:flex;align-items:center;gap:10px}
.brand img.logo{height:64px;display:block;transition:transform .25s}
.brand:hover img.logo{transform:scale(1.04)}
.brand-sub{font-size:11.5px;color:var(--muted,#7a8898);letter-spacing:.2em;text-transform:uppercase;margin-top:5px;font-weight:600}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:14px;color:var(--ink);transition:.2s;position:relative;padding:8px 0}
.nav-links a:hover{color:var(--teal)}
.nav-links a::after{content:"";position:absolute;bottom:0;left:50%;width:0;height:2px;background:var(--teal);transition:.25s;transform:translateX(-50%)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--teal)}
.nav-links a.active::after{width:100%}
.btn-quote{background:var(--teal);color:#fff!important;padding:10px 22px;border-radius:8px;font-weight:600;font-size:14px;transition:.2s}
.btn-quote:hover{background:var(--teal-d);box-shadow:var(--shadow)}

/* HERO */
.hero{background:linear-gradient(180deg,#fff 0%,var(--bg-soft) 100%);padding:80px 0 60px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:50px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(45,168,168,.08);color:var(--teal);padding:6px 14px;border-radius:30px;font-size:12px;font-weight:600;letter-spacing:.12em;margin-bottom:20px}
.hero h1{font-size:44px;font-weight:800;line-height:1.18;letter-spacing:-.01em;margin-bottom:18px;color:var(--ink)}
.hero h1 span{color:var(--teal)}
.hero-sub{font-size:17px;color:var(--muted);margin-bottom:28px;max-width:540px}
.hero-stats{display:flex;gap:30px;flex-wrap:wrap;margin-bottom:28px}
.hero-stats .item .v{font-size:28px;font-weight:800;color:var(--teal);line-height:1}
.hero-stats .item .k{font-size:11.5px;color:var(--muted);margin-top:4px;letter-spacing:.06em}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:var(--teal);color:#fff;padding:14px 30px;border-radius:10px;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px;transition:.2s;border:none;cursor:pointer}
.btn-primary:hover{background:var(--teal-d);box-shadow:var(--shadow);transform:translateY(-2px)}
.btn-secondary{border:2px solid var(--teal);color:var(--teal);padding:12px 26px;border-radius:10px;font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:8px;transition:.2s;background:transparent}
.btn-secondary:hover{background:var(--teal);color:#fff}

.hero-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero-card .frame{position:relative;border-radius:12px;overflow:hidden;background:linear-gradient(135deg,#e8f5f5 0%,#f5f8f8 100%);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.hero-card .frame img{width:100%;height:100%;object-fit:cover;display:block}
.hero-card .meta{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:13px;color:var(--muted)}
.hero-card .meta b{color:var(--ink)}

/* TRUST STRIP */
.trust-strip{background:var(--ink);padding:24px 0}
.trust-grid{display:flex;justify-content:space-around;flex-wrap:wrap;gap:24px;color:#fff;text-align:center}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13px}
.trust-item .badge{width:36px;height:36px;border-radius:50%;background:var(--teal);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;flex-shrink:0}
.trust-item .v{font-size:18px;font-weight:700;line-height:1.1}
.trust-item .k{font-size:11px;color:#aab7c5;letter-spacing:.06em}

/* SECTION COMMON */
.section{padding:80px 0}
.sec-head{text-align:center;margin-bottom:50px}
.sec-head .eyebrow{color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:36px;font-weight:800;letter-spacing:-.01em;margin-bottom:12px}
.sec-head .desc{color:var(--muted);font-size:16px;max-width:680px;margin:0 auto}

/* LINEUP (3-product showcase) */
.lineup{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:24px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.25s;display:flex;flex-direction:column;position:relative}
.product-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(45,168,168,.15);border-color:var(--teal)}
.product-card .visual{aspect-ratio:3/2;background:linear-gradient(135deg,#e8f5f5 0%,#f5f8f8 100%);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.product-card .visual::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(45,168,168,.1) 0%,transparent 60%)}
.product-card .visual img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.product-card .badge-flag{position:absolute;top:18px;left:18px;background:var(--teal);color:#fff;font-size:11px;font-weight:700;padding:6px 14px;border-radius:20px;letter-spacing:.06em;z-index:2}
.product-card .badge-flag.gold{background:var(--amber);color:#fff}
.product-card .body{padding:28px 30px 30px;flex:1;display:flex;flex-direction:column}
.product-card .cat{font-size:12px;color:var(--muted);letter-spacing:.16em;text-transform:uppercase;margin-bottom:10px}
.product-card h3{font-size:22px;font-weight:800;margin-bottom:10px}
.product-card .desc{font-size:13.5px;color:var(--muted);margin-bottom:18px;line-height:1.65}
.product-card .specs-mini{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;margin-bottom:18px}
.product-card .specs-mini div{font-size:12px;color:var(--muted)}
.product-card .specs-mini div b{display:block;color:var(--ink);font-size:14px;margin-bottom:2px;font-weight:800}
.product-card .specs-mini div b.teal{color:var(--teal)}
.product-card .foot{display:flex;gap:10px;margin-top:auto}
.product-card .foot a{flex:1;text-align:center;padding:11px 0;border-radius:8px;font-weight:600;font-size:13px;transition:.2s}
.product-card .foot .inq{background:var(--teal);color:#fff}
.product-card .foot .inq:hover{background:var(--teal-d)}
.product-card .foot .det{border:1px solid var(--line);color:var(--ink)}
.product-card .foot .det:hover{border-color:var(--teal);color:var(--teal)}

.product-card.roadmap-card .visual{background:linear-gradient(135deg,#f0f7f7 0%,#e3ebea 100%)}
.product-card.roadmap-card .visual .icon-big{font-size:80px;color:var(--teal-l);opacity:.7;position:relative;z-index:1}
.product-card.roadmap-card .badge-flag{background:var(--ink)}
.product-card.roadmap-card .phases{display:flex;gap:6px;margin-bottom:16px}
.product-card.roadmap-card .phases span{font-size:11px;padding:4px 10px;background:var(--bg-soft);border-radius:10px;color:var(--muted);font-weight:600}

/* SPECS TABLE */
.specs-section{background:var(--bg-soft)}
.spec-table{width:100%;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;border-collapse:collapse}
.spec-table th,.spec-table td{padding:16px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.spec-table th{background:var(--bg-soft);font-weight:700;color:var(--ink);font-size:13px;letter-spacing:.04em}
.spec-table tr:last-child td{border-bottom:none}
.spec-table td.cat{color:var(--muted);font-weight:600;font-size:13px;width:30%}
.spec-table td b{color:var(--teal);font-weight:800}
.spec-table .row-compare td{font-weight:600}

/* FLEET CONFIG */
.config-section{background:#fff}
.config-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.config-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px 28px;transition:.25s;position:relative}
.config-card:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-2px)}
.config-card.featured{background:var(--teal);color:#fff;border:none}
.config-card.featured .ic{background:rgba(255,255,255,.16);color:#fff}
.config-card.featured h4,.config-card.featured p{color:#fff}
.config-card.featured p{color:rgba(255,255,255,.85)}
.config-card .ic{width:52px;height:52px;border-radius:14px;background:rgba(45,168,168,.10);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.config-card .level{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;font-weight:700}
.config-card.featured .level{color:rgba(255,255,255,.8)}
.config-card h4{font-size:18px;font-weight:800;margin-bottom:10px}
.config-card p{font-size:13.5px;color:var(--muted);line-height:1.65;margin-bottom:14px}
.config-card ul{list-style:none}
.config-card li{font-size:13px;padding:5px 0;border-bottom:1px dashed rgba(0,0,0,.08)}
.config-card.featured li{border-bottom-color:rgba(255,255,255,.18);color:#fff}
.config-card li:last-child{border-bottom:none}
.config-card li b{color:var(--teal)}
.config-card.featured li b{color:#fff}
.config-card .price-note{font-size:12px;color:var(--muted);margin-top:18px;font-style:italic}
.config-card.featured .price-note{color:rgba(255,255,255,.7)}
.config-card.featured::after{content:"★ Most Asked";position:absolute;top:-10px;right:18px;background:var(--amber);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;letter-spacing:.06em}

/* OEM 4 MODES */
.oem-section{background:var(--bg-soft)}
.oem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.oem-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px 24px;text-align:center;transition:.25s;position:relative}
.oem-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow)}
.oem-card .ic{width:56px;height:56px;border-radius:14px;background:rgba(45,168,168,.10);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 18px}
.oem-card h4{font-size:16px;font-weight:800;margin-bottom:8px}
.oem-card p{font-size:13px;color:var(--muted);line-height:1.65}
.oem-card.featured{background:var(--teal);color:#fff;border:none}
.oem-card.featured .ic{background:rgba(255,255,255,.16);color:#fff}
.oem-card.featured p{color:rgba(255,255,255,.85)}
.oem-card.featured::after{content:"★ Most Picked";position:absolute;top:-10px;right:18px;background:var(--amber);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;letter-spacing:.06em}

/* WHY SECTION */
.why-section{background:#fff}
.why-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:center}
.why-list{list-style:none;margin-top:20px}
.why-list li{font-size:15px;padding:14px 0;border-bottom:1px dashed var(--line);display:flex;gap:14px;align-items:flex-start}
.why-list li:last-child{border-bottom:none}
.why-list li::before{content:"✓";color:var(--teal);font-weight:800;font-size:18px;flex-shrink:0;line-height:1.4}
.why-list li b{color:var(--ink);font-weight:700;display:block;margin-bottom:2px}
.why-list li span{color:var(--muted);font-size:13.5px}
.why-image{background:linear-gradient(135deg,#e8f5f5 0%,#f5f8f8 100%);border-radius:18px;padding:18px;position:relative;overflow:hidden}
.why-image img{width:100%;border-radius:10px;display:block}
.why-image .cap{font-size:12px;color:var(--muted);margin-top:12px;text-align:center;letter-spacing:.04em}

/* FAQ */
.faq-section{padding:80px 0;background:var(--bg-soft);border-bottom:1px solid var(--line)}
.faq-section h2{font-size:36px;font-weight:800;text-align:center;margin-bottom:14px}
.faq-list{max-width:780px;margin:36px auto 0}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin-bottom:14px;box-shadow:var(--shadow)}
.faq-item .q{font-weight:700;font-size:16px;color:var(--ink);margin-bottom:8px;display:flex;gap:10px;align-items:flex-start}
.faq-item .q::before{content:"Q";flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--teal);color:#fff;font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-top:2px}
.faq-item .a{font-size:14px;color:var(--muted);padding-left:36px;line-height:1.7}

/* CONTACT */
.contact-section{background:var(--ink);color:#fff;padding:80px 0}
.contact-section .sec-head h2{color:#fff}
.contact-section .sec-head .desc{color:#aab7c5}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:920px;margin:0 auto}
.ccard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:30px 28px;text-align:center;transition:.25s}
.ccard:hover{background:rgba(255,255,255,.10);border-color:var(--teal-l);transform:translateY(-2px)}
.ccard .ic{width:52px;height:52px;border-radius:50%;background:var(--teal);display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 16px}
.ccard .lbl{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:#aab7c5;margin-bottom:8px}
.ccard .val{font-size:17px;font-weight:700;color:#fff;word-break:break-all;line-height:1.4}
.ccard .val a{color:#fff}
.ccard .val a:hover{color:var(--teal-l)}
.ccard .note{font-size:11.5px;color:#7a8898;margin-top:8px}

/* FOOTER */
footer{background:#0e1822;color:#aab7c5;padding:50px 0 30px;font-size:13px}
.f-top{display:grid;grid-template-columns:1.7fr .9fr .9fr .9fr 1.1fr;gap:30px;margin-bottom:32px}
.f-brand img{height:38px;margin-bottom:14px}
.f-brand p{font-size:12.5px;line-height:1.7;color:#7a8898;max-width:300px}
.f-col h5{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.04em}
.f-col ul{list-style:none}
.f-col li{margin-bottom:8px}
.f-col a{color:#aab7c5;font-size:13px;transition:.2s}
.f-col a:hover{color:var(--teal-l)}
.f-bottom{border-top:1px solid rgba(255,255,255,.06);padding-top:24px;text-align:center;font-size:12px;color:#5a6776}
.f-logos{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.f-logos img{height:32px;opacity:.92;filter:brightness(0) invert(1)}
.f-logos .sep{color:#3a4754;font-size:12px}

@media(max-width:960px){
  .brand img.logo{height:52px}
  .brand-sub{font-size:10px;letter-spacing:.16em}
  .hero-grid,.why-grid{grid-template-columns:1fr}
  .lineup{grid-template-columns:1fr}
  .oem-grid{grid-template-columns:1fr 1fr}
  .config-grid{grid-template-columns:1fr}
  .spec-table{display:block;overflow-x:auto;white-space:nowrap}
  .contact-cards{grid-template-columns:1fr}
  .nav-links{display:none}
  .hero h1{font-size:32px}
  .f-top{grid-template-columns:1fr 1fr}
  .trust-grid{flex-direction:column;gap:14px}
}

/* ============ 层级导航（父子关系） ============ */
.crumbs{font-size:12.5px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--teal);font-weight:600}
.crumbs a:hover{text-decoration:underline}
.crumbs b{color:var(--ink)}
.rel-chip{display:inline-flex;align-items:center;gap:8px;margin-bottom:26px;background:rgba(45,168,168,.08);border:1px dashed var(--teal);color:var(--teal-d);font-size:13px;font-weight:600;padding:9px 16px;border-radius:10px}
.rel-chip a{text-decoration:underline}
/* ============ 产品页 / 博客 扩展组件（叠加在 base.css 之后） ============ */
.gal{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:start}
.gal-main{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.gal-main img{width:100%;aspect-ratio:4/3;object-fit:contain;background:linear-gradient(135deg,#eef7f7 0%,#f7fbfb 100%);display:block}
.gal-badge{position:absolute;top:16px;left:16px;background:rgba(31,128,128,.94);color:#fff;font-size:12px;font-weight:700;padding:6px 14px;border-radius:20px;letter-spacing:.05em;z-index:2}
.thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}
.thumbs img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#fff;border:2px solid var(--line);border-radius:10px;cursor:pointer;transition:.2s;display:block}
.thumbs img:hover{border-color:var(--teal-l)}
.thumbs img.on{border-color:var(--teal);box-shadow:0 0 0 3px rgba(45,168,168,.18)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chips span{background:var(--bg-soft);border:1px solid var(--line);color:var(--teal-d);font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:20px}
.f-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.fcard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 24px;transition:.25s}
.fcard:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-3px)}
.fcard .ic{width:46px;height:46px;border-radius:12px;background:rgba(45,168,168,.10);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:14px}
.fcard h4{font-size:16px;font-weight:800;margin-bottom:8px}
.fcard p{font-size:13.2px;color:var(--muted);line-height:1.68}
.longbox{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.longbox img{width:100%;display:block}
.longcap{padding:14px 20px;font-size:12.5px;color:var(--muted);background:var(--bg-soft);border-top:1px solid var(--line);text-align:center}
.cta-band{background:linear-gradient(120deg,#0f3f3e 0%,#1f8080 60%,#2DA8A8 100%);color:#fff;padding:52px 44px;border-radius:20px;display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:26px;font-weight:800;margin-bottom:10px;color:#fff}
.cta-band p{opacity:.92;font-size:14.5px;max-width:560px}
.cta-band .btn-primary{background:#fff;color:var(--teal-d)}
.cta-band .btn-primary:hover{background:#eafcfc}
.cta-band .btn-secondary{border-color:#fff;color:#fff}
.cta-band .btn-secondary:hover{background:#fff;color:var(--teal-d)}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.scene{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#eef7f7;display:block}
.scene{aspect-ratio:1/1.05}
.scene img{width:100%;height:100%;object-fit:cover;display:block}
.scene .lbl{position:absolute;left:0;right:0;bottom:0;padding:30px 18px 16px;background:linear-gradient(to top,rgba(9,26,32,.88),rgba(9,26,32,0));color:#fff;font-size:14px;font-weight:700}
.spec-note{max-width:900px;margin:24px auto 0;background:#fff8ec;border:1px solid #f0d9a8;border-left:4px solid var(--amber);border-radius:12px;padding:18px 22px;font-size:13px;color:#6b5326;line-height:1.75}
.spec-note b{color:#4a3813}
.src-note{margin:10px 0 0;font-size:11.5px;color:var(--muted);line-height:1.6;letter-spacing:.01em}
.cert-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:28px}
.cert-pill{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 20px;font-size:13px;font-weight:600;box-shadow:var(--shadow)}
.cert-pill .dot{width:9px;height:9px;border-radius:50%;background:#2ecc71;flex-shrink:0}
.cert-pill .dot.wait{background:var(--amber)}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-table .sub,.spec-table span.sub{display:block;font-size:11.5px;font-weight:400;color:var(--muted);margin-top:3px;line-height:1.5}

/* BLOG */
.post-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(45,168,168,.15);border-color:var(--teal)}
.post-card .visual{aspect-ratio:3/2;overflow:hidden;background:#eef7f7}
.post-card .visual img{width:100%;height:100%;object-fit:cover;display:block}
.post-card .body{padding:24px 26px 26px;flex:1;display:flex;flex-direction:column}
.post-card .tag{font-size:11.5px;color:var(--teal);letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin-bottom:10px}
.post-card h3{font-size:20px;font-weight:800;margin-bottom:10px;line-height:1.35}
.post-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.post-card .more{margin-top:auto;color:var(--teal);font-weight:700;font-size:13.5px}
/* 未发布文章的图片位：用主题相关的实拍图去色 + 遮罩，避免出现空白图块 */
.post-card .visual.pending{position:relative}
.post-card .visual.pending img{filter:grayscale(.6) brightness(.72)}
.post-card .visual.pending::after{content:"Guide in preparation";position:absolute;left:0;right:0;bottom:0;padding:28px 14px 12px;background:linear-gradient(to top,rgba(9,26,32,.85),rgba(9,26,32,0));color:#fff;font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;text-align:center}
.post-card.soon{border-style:dashed;background:var(--bg-soft)}
.post-card.soon .visual{display:flex;align-items:center;justify-content:center;color:var(--teal-l);font-size:56px;font-weight:800}
.article{max-width:820px;margin:0 auto}
.article h2{font-size:28px;font-weight:800;margin:44px 0 14px;line-height:1.3}
.article h3{font-size:20px;font-weight:800;margin:30px 0 10px}
.article p{font-size:16px;color:#33404f;line-height:1.85;margin-bottom:16px}
.article ul,.article ol{margin:0 0 18px 22px}
.article li{font-size:15.5px;color:#33404f;line-height:1.85;margin-bottom:8px}
.article .lede{font-size:18px;color:var(--muted);line-height:1.8;margin-bottom:26px}
.article table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article th,.article td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.article th{background:var(--bg-soft);font-weight:700;font-size:13px}
.article tr:last-child td{border-bottom:none}
.article blockquote{margin:24px 0;padding:18px 24px;background:var(--bg-soft);border-left:4px solid var(--teal);border-radius:10px;font-size:15px;color:var(--ink);line-height:1.8}
.article .key{background:#fff8ec;border:1px solid #f0d9a8;border-left:4px solid var(--amber);border-radius:12px;padding:20px 24px;margin:26px 0;font-size:14.5px;color:#6b5326;line-height:1.8}
.article .key b{color:#4a3813}
.toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:22px 26px;margin:28px 0}
.toc h4{font-size:14px;font-weight:800;margin-bottom:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--teal)}
.toc ul{margin:0;list-style:none}
.toc li{font-size:14px;padding:5px 0;color:var(--muted)}
.toc a{color:var(--teal-d);font-weight:600}
.toc a:hover{text-decoration:underline}
.meta-row{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:26px;padding-bottom:18px;border-bottom:1px solid var(--line)}

/* ---- 文章配图 ---- */
.article figure{margin:30px 0;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff}
.article figure img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover}
.article figure figcaption{padding:11px 18px;font-size:12.5px;color:var(--muted);background:var(--bg-soft);border-top:1px solid var(--line);line-height:1.6}
.article .fig-hero{margin:0 0 32px}
.article .fig-hero img{aspect-ratio:16/9}
.article .fig-duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:30px 0}
.article .fig-duo figure{margin:0}
.article .fig-duo figure img{aspect-ratio:4/3}

/* ---- video blocks (2026-09-11 客户新素材) ---- */
.video-grid{display:grid;grid-template-columns:1fr;gap:22px;margin-top:34px}
.video-block{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#0b1c22}
.video-block video{width:100%;display:block;background:#0b1c22}
.video-block .vcap{padding:13px 18px;font-size:13px;color:#c8d4d9;background:#0b1c22;line-height:1.65}
.video-block .vcap b{color:#fff}
.video-grid.two{grid-template-columns:1fr 1fr;gap:20px}

/* ---- wide cards: for 2:1 and wider material (scene-grid would crop half away) ---- */
.wide-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.wide-grid.one{grid-template-columns:1fr}
.wide-grid.three{grid-template-columns:repeat(3,1fr)}
.wide-card{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#eef7f7;box-shadow:var(--shadow)}
.wide-card img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
/* ---- landscape-but-not-16:9 material (ar 1.4–1.6). 16:9 only shaves the top
       and bottom, so a fixed .wide-card is a ~16% crop. Use .soft on a 2-up row
       whose assets all sit in that band and the box follows the image instead. ---- */
.wide-grid.soft .wide-card img{aspect-ratio:3/2}
.wide-grid.soft .wide-card .lbl{padding:34px 20px 15px}
.wide-card .lbl{position:absolute;left:0;right:0;bottom:0;padding:36px 20px 16px;background:linear-gradient(to top,rgba(9,26,32,.9),rgba(9,26,32,0));color:#fff;font-size:14.5px;font-weight:700;line-height:1.4}
.wide-card .lbl span{display:block;font-size:12px;font-weight:500;opacity:.85;margin-top:3px;letter-spacing:.03em}
/* ---- square/portrait material inside a 3-up wide-grid: a 16:9 slot would
       crop an ar≈1.0 asset down to ~56% of its height, decapitating hardware.
       Use .three.sq when the assets in that row are square or portrait. ---- */
.wide-grid.three.sq .wide-card img{aspect-ratio:1/1}
.wide-grid.three.sq .wide-card .lbl{padding:30px 18px 14px;font-size:13.5px}
.wide-grid.three.sq .wide-card .lbl span{font-size:11.5px}

/* ---- spec sheets: text-heavy catalogue pages must stay readable, so the box
       follows the image's own ratio instead of cropping into 16:9.
       Caption sits BELOW the image (not overlaid) so it can never cover the
       spec text printed at the bottom of the catalogue page. ---- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.spec-card{border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
.spec-card img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;display:block;background:#fff}
.spec-card .lbl{position:static;padding:12px 18px 14px;background:#f7fbfb;border-top:1px solid var(--line);color:var(--ink);font-size:13.5px;font-weight:700;line-height:1.4}

/* ---- split: text on one side, one real photo on the other.
       Photo box follows the image's own ratio (never cropped), so any
       asset from 4:3 to 16:9 works without distortion. `flip` puts the
       photo first for alternating rhythm. ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-top:8px}
.split .txt{min-width:0}
.split .pic{border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#eef7f7;box-shadow:var(--shadow)}
.split .pic img{width:100%;height:auto;display:block}
.split.flip .pic{order:-1}
.split h3{font-size:20px;font-weight:700;line-height:1.35;margin:0 0 12px}
.split p{font-size:14.5px;color:var(--muted);line-height:1.78;margin:0 0 12px}
.split ul{list-style:none;margin:14px 0 0}
.split ul li{position:relative;padding-left:24px;margin-bottom:10px;font-size:14px;line-height:1.7}
.split ul li:before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--teal-l)}
.split ul li b{color:var(--ink)}
.split .kpi{display:flex;gap:26px;flex-wrap:wrap;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.split .kpi div{min-width:88px}
.split .kpi b{display:block;font-size:21px;font-weight:800;color:var(--teal-d);line-height:1.15}
.split .kpi span{font-size:11.5px;color:var(--muted);letter-spacing:.02em}

@media(max-width:960px){
  .split{grid-template-columns:1fr;gap:24px}
  .split.flip .pic{order:0}
}

@media(max-width:960px){
  .gal,.post-grid,.related-grid{grid-template-columns:1fr}
  .f-grid,.scene-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:32px 24px}
  .article h2{font-size:23px}
  .article .fig-duo{grid-template-columns:1fr}
  .wide-grid,.wide-grid.three,.video-grid.two,.spec-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:24px}
  .split.flip .pic{order:0}
}

.scene img{object-fit:cover !important}
/* ============================================================
   Component styles
   ============================================================ */

/* ---------- About ---------- */

.certs{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cert{display:flex;align-items:center;gap:10px;padding:10px 18px;background:#fff;border:1px solid var(--line);border-radius:30px;font-size:13px;color:var(--ink);transition:.2s}
.cert .ic{width:28px;height:28px;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:11px;flex-shrink:0}
.cert b{color:var(--teal);font-weight:700}
.note-box{max-width:860px;margin:28px auto 0;background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:12px;padding:20px 24px;font-size:13.5px;color:var(--muted);line-height:1.75}
.note-box b{color:var(--ink)}

/* ---------- OEM 页 ---------- */

.certs{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cert{display:flex;align-items:center;gap:10px;padding:10px 18px;background:#fff;border:1px solid var(--line);border-radius:30px;font-size:13px;color:var(--ink);transition:.2s}
.cert .ic{width:28px;height:28px;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:11px;flex-shrink:0}
.cert b{color:var(--teal);font-weight:700}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 26px;transition:.25s}
.cap-card:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-2px)}
.cap-card .ic{width:46px;height:46px;border-radius:12px;background:rgba(45,168,168,.10);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}
.cap-card h4{font-size:16.5px;font-weight:800;margin-bottom:8px}
.cap-card p{font-size:13.5px;color:var(--muted);line-height:1.7}
.cap-card ul{list-style:none;margin-top:10px}
.cap-card li{font-size:13px;color:var(--muted);padding:4px 0 4px 16px;position:relative}
.cap-card li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--teal-l)}
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-top:12px}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 18px;text-align:center}
.flow-step .n{width:34px;height:34px;border-radius:50%;background:var(--teal);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.flow-step h5{font-size:14px;font-weight:800;margin-bottom:6px}
.flow-step p{font-size:12.5px;color:var(--muted);line-height:1.6}
.flow-step::after{content:"";position:absolute;right:-8px;top:50%;width:16px;height:2px;background:var(--line)}
.flow-step:last-child::after{display:none}
.terms{width:100%;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;border-collapse:collapse;margin-top:8px}
.terms th,.terms td{padding:15px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.terms th{background:var(--bg-soft);font-weight:700;font-size:13px}
.terms tr:last-child td{border-bottom:none}
.terms td:first-child{font-weight:700;color:var(--ink);width:28%}
.terms td{color:var(--muted)}
.compliance{max-width:900px;margin:30px auto 0;background:#fff8ec;border:1px solid #f0d9a8;border-left:4px solid var(--amber);border-radius:12px;padding:20px 24px;font-size:13.5px;color:#6b5326;line-height:1.75}
.compliance b{color:#4a3813}
@media(max-width:960px){
  .cap-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .flow-step::after{display:none}
  .terms{display:block;overflow-x:auto;white-space:nowrap}
}

/* ---------- Contact 页（联系询盘） ---------- */

.certs{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cert{display:flex;align-items:center;gap:10px;padding:10px 18px;background:#fff;border:1px solid var(--line);border-radius:30px;font-size:13px;color:var(--ink);transition:.2s}
.cert .ic{width:28px;height:28px;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:11px;flex-shrink:0}
.cert b{color:var(--teal);font-weight:700}
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px 34px;box-shadow:var(--shadow)}
.form-card h3{font-size:22px;font-weight:800;margin-bottom:6px}
.form-card .sub{font-size:13.5px;color:var(--muted);margin-bottom:26px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f-field{margin-bottom:16px}
.f-field label{display:block;font-size:12.5px;font-weight:700;color:var(--ink);margin-bottom:7px;letter-spacing:.02em}
.f-field label i{color:#c0392b;font-style:normal}
.f-field input,.f-field select,.f-field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff;transition:.2s}
.f-field input:focus,.f-field select:focus,.f-field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(45,168,168,.12)}
.f-field textarea{resize:vertical;min-height:110px}
.f-upload{border:1.5px dashed var(--line);border-radius:10px;padding:18px;text-align:center;font-size:13px;color:var(--muted);background:var(--bg-soft)}
.f-upload b{color:var(--teal)}
.f-submit{width:100%;background:var(--teal);color:#fff;border:none;border-radius:10px;padding:15px;font-size:15.5px;font-weight:700;cursor:pointer;transition:.2s;font-family:inherit;margin-top:6px}
.f-submit:hover{background:var(--teal-d);box-shadow:var(--shadow)}
.f-note{font-size:12px;color:var(--muted);text-align:center;margin-top:14px;line-height:1.6}
.side-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 24px;margin-bottom:18px}
.side-card h4{font-size:16px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.side-card h4 .ic{width:32px;height:32px;border-radius:9px;background:rgba(45,168,168,.10);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:15px}
.side-card .big{font-size:15.5px;font-weight:700;color:var(--teal);word-break:break-all}
.side-card .big a{color:var(--teal)}
.side-card p{font-size:13px;color:var(--muted);line-height:1.7;margin-top:6px}
.side-card.dark{background:var(--ink);border:none;color:#fff}
.side-card.dark h4{color:#fff}
.side-card.dark h4 .ic{background:rgba(255,255,255,.12);color:#fff}
.side-card.dark p{color:#aab7c5}
.side-card.dark .big{color:var(--teal-l)}
.side-card.dark .big a{color:var(--teal-l)}
.steps-mini{list-style:none;margin-top:10px}
.steps-mini li{display:flex;gap:12px;font-size:13px;color:var(--muted);padding:9px 0;border-bottom:1px dashed var(--line)}
.steps-mini li:last-child{border-bottom:none}
.steps-mini li b{flex:0 0 22px;height:22px;border-radius:50%;background:rgba(45,168,168,.12);color:var(--teal);font-size:12px;font-weight:800;display:inline-flex;align-items:center;justify-content:center}
@media(max-width:960px){
  .contact-grid{grid-template-columns:1fr}
  .f-row{grid-template-columns:1fr}
  .form-card{padding:26px 20px}
}

/* ---------- Solutions 页（智慧农业） ---------- */

.stack{background:var(--bg-soft);padding:80px 0}
.layers{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.layers.two{grid-template-columns:repeat(2,1fr)}
.layer{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 24px;position:relative;transition:.25s}
.layer:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow)}
.layer .num{font-size:12px;font-weight:800;color:var(--teal);letter-spacing:.16em;margin-bottom:14px}
.layer h4{font-size:18px;font-weight:800;margin-bottom:8px}
.layer p{font-size:13.5px;color:var(--muted);line-height:1.65;margin-bottom:14px}
.layer ul{list-style:none}
.layer li{font-size:13px;color:var(--ink);padding:5px 0;border-bottom:1px dashed var(--line)}
.layer li:last-child{border-bottom:none}
.layer li b{color:var(--teal)}
.loop{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px 28px;position:relative;transition:.25s}
.step:hover{border-color:var(--teal);box-shadow:var(--shadow)}
.step .ic{width:54px;height:54px;border-radius:14px;background:rgba(45,168,168,.10);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;margin-bottom:16px}
.step h4{font-size:18px;font-weight:800;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.6}
.step .arrow{position:absolute;top:36px;right:-18px;width:36px;height:36px;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;z-index:2}
.usecases{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.usecase{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 24px;text-align:left;transition:.25s}
.usecase:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:var(--shadow)}
.usecase .ic{font-size:28px;margin-bottom:14px;color:var(--teal)}
.usecase h4{font-size:16px;font-weight:800;margin-bottom:8px}
.usecase p{font-size:13.5px;color:var(--muted);line-height:1.6}
.data-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:40px 0 10px}
.dstat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 22px;text-align:center;transition:.25s}
.dstat:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:var(--shadow)}
.dstat .v{font-size:34px;font-weight:800;color:var(--teal);line-height:1}
.dstat .k{font-size:13px;color:var(--muted);margin-top:10px}
.dstat .src{font-size:11px;color:#aab7c5;margin-top:6px;letter-spacing:.04em}
.roadmap{background:var(--bg-soft)}
.timeline{position:relative;margin-top:50px;padding:20px 0}
.timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:3px;background:var(--line);transform:translateX(-50%)}
.tl-row{display:grid;grid-template-columns:1fr 80px 1fr;gap:24px;align-items:center;margin-bottom:36px;position:relative}
.tl-row .dot{width:22px;height:22px;border-radius:50%;background:var(--teal);border:4px solid #fff;box-shadow:0 0 0 3px var(--teal);margin:0 auto}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 24px;box-shadow:var(--shadow)}
.tl-card.right{margin-left:0}
.tl-card.left{margin-left:auto;text-align:right}
.tl-card .phase{font-size:12px;color:var(--teal);font-weight:800;letter-spacing:.14em;margin-bottom:6px}
.tl-card h4{font-size:17px;font-weight:800;margin-bottom:6px}
.tl-card p{font-size:13.5px;color:var(--muted);line-height:1.6}
@media(max-width:960px){
  .layers,.loop,.usecases,.data-strip,.contact-cards{grid-template-columns:1fr 1fr}
  .tl-row{grid-template-columns:1fr;gap:10px}
  .tl-card.left,.tl-card.right{text-align:left;margin-left:20px}
  .timeline::before{left:10px}
}

/* 首页概念区左列容器（语义容器，仅保证 grid 子项可收缩） */
.concept-funnel{min-width:0}

/* ============ 法务页（Privacy / Returns / Terms）============ */
.legal-wrap{max-width:900px;margin:0 auto}
.legal-head{padding:58px 0 0}
.legal-head h1{font-size:38px;line-height:1.18;font-weight:800;letter-spacing:-.6px;margin:14px 0 16px}
.legal-head h1 span{color:var(--teal)}
.legal-lede{font-size:15.5px;color:var(--muted);line-height:1.8;max-width:820px}
.legal-stamp{margin-top:20px;display:inline-block;font-size:12.5px;color:var(--muted);background:var(--bg-soft);border:1px solid var(--line);border-radius:22px;padding:8px 18px}
.legal-body{padding:40px 0 84px}
.legal-body h2{font-size:21px;font-weight:800;color:var(--ink);margin:46px 0 16px;padding-top:26px;border-top:1px solid var(--line);letter-spacing:-.2px}
.legal-body h2:first-child{margin-top:0;padding-top:0;border-top:none}
.legal-body h3{font-size:16px;font-weight:700;color:var(--ink);margin:26px 0 10px}
.legal-body p{font-size:14.5px;color:var(--muted);line-height:1.9;margin:12px 0}
.legal-body ul{margin:12px 0 12px 4px;padding-left:22px}
.legal-body li{font-size:14.5px;color:var(--muted);line-height:1.85;margin:8px 0}
.legal-body b,.legal-body strong{color:var(--ink);font-weight:700}
.legal-body a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}
.legal-body .toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:22px 26px;margin:0 0 12px}
.legal-body .toc h4{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:12px}
.legal-body .toc ol{margin:0;padding-left:20px}
.legal-body .toc li{font-size:13.5px;margin:5px 0;color:var(--muted)}
.legal-body .callout{max-width:100%;margin:24px 0;background:#fff8ec;border:1px solid #f0d9a8;border-left:4px solid var(--amber);border-radius:12px;padding:18px 22px}
.legal-body .callout p{margin:6px 0;color:#6b5326}
.legal-body .callout b{color:#4a3813}
.legal-body .fields{width:100%;border-collapse:collapse;margin:18px 0}
.legal-body .fields th,.legal-body .fields td{text-align:left;font-size:13.5px;padding:12px 16px;border-bottom:1px solid var(--line);color:var(--muted)}
.legal-body .fields th{background:var(--bg-soft);font-weight:700;font-size:12.5px;color:var(--ink);text-transform:uppercase;letter-spacing:.06em}
.legal-body .fields td:first-child{font-weight:700;color:var(--ink);width:34%}
.legal-body .fields tr:last-child td{border-bottom:none}
.f-bottom .f-legal{display:inline-flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-left:14px}
.f-bottom .f-legal a{color:#7a8898;transition:.2s}
.f-bottom .f-legal a:hover{color:var(--teal-l,#3BC9C9)}
.f-bottom .f-legal i{color:#3a4754;font-style:normal}
@media(max-width:960px){
  .legal-head{padding-top:40px}
  .legal-head h1{font-size:29px}
  .f-bottom .f-legal{display:flex;margin:10px 0 0}
}

/* ============ 移动端适配（2026-09-18 补齐） ============ */

/* 语义栅格工具类：替代页面内联 grid-template-columns。
   内联样式优先级高于媒体查询，会导致手机端栅格不降级。 */
.cols-2{grid-template-columns:1fr 1fr}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}

/* 移动端导航（汉堡菜单，纯 CSS / 无 JS） */
.nav-toggle{display:none}
.nav-burger{display:none}

@media(max-width:960px){
  /* 栅格降级 */
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr 1fr}
  .thumbs{grid-template-columns:repeat(3,1fr)}
  /* 未带 .spec-table / .terms 的裸表格：横滚兜底 */
  table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
  /* 导航 */
  .nav-in{flex-wrap:wrap;gap:10px;padding:10px 20px}
  .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:46px;height:42px;padding:0 11px;margin-left:auto;cursor:pointer;border:1px solid var(--line);border-radius:10px;background:#fff}
  .nav-burger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.22s}
  .nav-toggle:checked ~ .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked ~ .nav-burger span:nth-child(2){opacity:0}
  .nav-toggle:checked ~ .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-links{display:none;order:9;width:100%;flex-direction:column;align-items:stretch;gap:0;margin-top:8px;padding-top:4px;border-top:1px solid var(--line)}
  .nav-toggle:checked ~ .nav-links{display:flex}
  .nav-links a{padding:14px 2px;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links a::after{display:none}
  .nav-links a.btn-quote{margin:12px 0 4px;padding:13px 18px;border-bottom:0;text-align:center;justify-content:center}
}

/* 手机档（≤640px） */
@media(max-width:640px){
  .cols-2,.cols-3,.cols-4,.oem-grid,.f-grid,.scene-grid,.layers,.layers.two,.loop,.usecases,
  .data-strip,.contact-cards,.flow,.specs-mini,.video-grid.two,.wide-grid,.wide-grid.three,
  .spec-grid,.related-grid,.post-grid,.article .fig-duo{grid-template-columns:1fr}
  .thumbs{grid-template-columns:1fr 1fr}
  .wrap{padding:0 18px}
  .section{padding:52px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2{font-size:25px}
  .sec-head .desc{font-size:15px}
  .hero{padding:44px 0 38px}
  .hero h1{font-size:27px;line-height:1.22}
  .hero-sub{font-size:15.5px}
  .hero-stats{gap:18px 26px}
  .hero-stats .item .v{font-size:23px}
  .hero-ctas{flex-direction:column;align-items:stretch}
  .hero-ctas a{justify-content:center;width:100%}
  .nav-in{padding:9px 16px}
  .brand img.logo{height:42px}
  .brand-sub{font-size:9px;letter-spacing:.13em}
  .trust-strip{padding:20px 0}
  .cta-band{padding:28px 18px}
  .f-top{grid-template-columns:1fr}
  /* 触控目标 ≥44px */
  .btn-primary,.btn-secondary{padding:14px 20px;font-size:15px}
  .nav-links a{padding:15px 2px}
  table{font-size:13.5px}
  .spec-table td,.spec-table th{padding:10px 12px}
}