/* ============ site styles ============ */
:root {
  --ink: #08131f;
  --ink-soft: #1d2f42;
  --body: #35465a;
  --muted: #74879b;
  --line: #e3e9f1;
  --line-2: #eef2f7;
  --bg: #ffffff;
  --soft: #f5f8fc;
  --brand: #1652d6;
  --brand-d: #0d3fa8;
  --brand-l: #e8efff;
  --accent: #00b884;
  --accent-l: #e6faf3;
  --warn: #b45309;
  --r: 14px;
  --r-sm: 9px;
  --shadow: 0 1px 2px rgba(8, 19, 31, .05), 0 12px 28px -18px rgba(8, 19, 31, .28);
  --shadow-lg: 0 2px 6px rgba(8, 19, 31, .06), 0 30px 60px -30px rgba(8, 19, 31, .35);
  --ff: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--body);
  font-family: var(--ff); font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--ink); margin: 0; line-height: 1.18; letter-spacing: -.02em; font-weight: 680; }
p { margin: 0; }
.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 860px; }
.center { text-align: center; }
.muted { color: var(--muted); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 50px; padding: 0 26px; border-radius: 999px;
  font-size: 15px; font-weight: 620; letter-spacing: -.01em;
  border: 1px solid transparent; cursor: pointer; transition: .18s ease; white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 18px -8px rgba(22, 82, 214, .8); }
.btn-primary:hover { background: var(--brand-d); transform: translateY(-1px); }
.btn-line { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-line:hover { border-color: var(--ink); }
.btn-ghost { background: transparent; color: var(--ink-soft); }
.btn-ghost:hover { color: var(--brand); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }
.btn-block { width: 100%; }
.link-arrow { font-weight: 600; color: var(--brand); display: inline-flex; gap: 6px; align-items: center; }
.link-arrow span { transition: .2s; }
.link-arrow:hover span { transform: translateX(4px); }

/* ---------- topbar ---------- */
.topbar { background: var(--ink); color: #b9c7d6; font-size: 12.5px; letter-spacing: .01em; }
.topbar-in { display: flex; align-items: center; gap: 22px; height: 38px; }
.tb-item { color: #9fb1c4; }
.tb-right { margin-left: auto; display: flex; gap: 20px; }
.tb-right a { color: #cfdae6; }
.tb-right a:hover { color: #fff; }

/* ---------- header ---------- */
.hdr { position: sticky; top: 0; z-index: 60; background: rgba(255, 255, 255, .92); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; gap: 30px; height: 74px; }
.logo { display: flex; align-items: center; gap: 11px; }
.logo-link { display: flex; align-items: center; color: inherit; text-decoration: none; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(145deg, var(--brand), #5825c9);
  color: #fff; font-weight: 800; font-size: 13px; letter-spacing: .04em;
}
.logo-txt { font-weight: 720; color: var(--ink); font-size: 16px; line-height: 1.15; display: flex; flex-direction: column; }
.logo-txt em { font-style: normal; font-weight: 500; font-size: 11.5px; color: var(--muted); letter-spacing: .02em; }
/* 未填写品牌名时的中性标识 */
.logo-txt-gen { font-size: 15px; letter-spacing: .01em; color: var(--ink-soft); }
.nav-links { display: flex; gap: 4px; margin-left: 10px; }
.nav-links a { padding: 9px 14px; border-radius: 8px; font-size: 14.5px; font-weight: 550; color: var(--ink-soft); }
.nav-links a:hover { background: var(--soft); color: var(--ink); }
.nav-links a.is-on { color: var(--brand); background: var(--brand-l); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; background: #fff; flex-direction: column; gap: 4px; align-items: center; justify-content: center; }
.burger span { width: 17px; height: 1.6px; background: var(--ink); border-radius: 2px; }

/* ---------- hero ---------- */
.hero { background: radial-gradient(900px 460px at 78% 8%, #1b3f7d 0%, rgba(27, 63, 125, 0) 62%), linear-gradient(180deg, #08131f 0%, #0c1b2b 100%); color: #dbe6f2; padding: 76px 0 84px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 60% 40%, #000 30%, transparent 78%);
}
.hero-grid { display: grid; grid-template-columns: 1.18fr .82fr; gap: 48px; align-items: center; position: relative; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .14em; color: #7ea8ff; margin-bottom: 18px; }
.hero h1 { font-size: clamp(32px, 4vw, 50px); color: #fff; letter-spacing: -.035em; margin-bottom: 20px; }
.hero .lead { color: #a9bdd2; font-size: 17px; max-width: 560px; }
.hero-btns { display: flex; gap: 12px; margin: 30px 0 0; flex-wrap: wrap; }
.hero .btn-line { background: transparent; color: #e5eefa; border-color: rgba(255,255,255,.22); }
.hero .btn-line:hover { border-color: #fff; background: rgba(255,255,255,.06); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 40px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.12); }
.stat b { display: block; font-size: 25px; color: #fff; letter-spacing: -.03em; font-weight: 700; }
.stat span { font-size: 12px; color: #8fa4ba; }
.hero-art { position: relative; }
.art-card { position: relative; border-radius: 20px; overflow: hidden; background: linear-gradient(160deg, #16305a, #0a1a2c); border: 1px solid rgba(255,255,255,.12); box-shadow: var(--shadow-lg); aspect-ratio: 4/4.2; display: grid; place-items: center; }
.art-card img { width: 78%; filter: drop-shadow(0 24px 40px rgba(0,0,0,.55)); }
.art-glow { position: absolute; width: 60%; height: 60%; background: radial-gradient(circle, rgba(64,130,255,.55), transparent 66%); filter: blur(46px); }
.art-badge { position: absolute; left: 16px; bottom: 16px; background: rgba(255,255,255,.1); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.16); border-radius: 11px; padding: 9px 13px; }
.art-badge b { display: block; color: #fff; font-size: 15px; }
.art-badge span { font-size: 10.5px; color: #a9bdd2; letter-spacing: .02em; }
.art-badge2 { left: auto; right: 16px; bottom: auto; top: 16px; }

/* ---------- sections ---------- */
.sec { padding: 84px 0; }
.sec-soft { background: var(--soft); }
.sec-dark { background: linear-gradient(180deg, #0a1827, #08131f); color: #c3d2e2; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 40px; }
.kicker { font-size: 11.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--brand); margin-bottom: 14px; }
.kicker-light { color: #6f9dff; }
.h2 { font-size: clamp(25px, 2.9vw, 36px); letter-spacing: -.03em; }
.h2-light { color: #fff; }
.lead { font-size: 16.5px; color: var(--body); margin-top: 14px; max-width: 660px; }
.lead-light { color: #9fb4c9; }

/* ---------- usp ---------- */
.sec-usp { padding: 0; }
.usp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; transform: translateY(-30px); background: #fff; box-shadow: var(--shadow); }
.usp { padding: 30px 28px; border-right: 1px solid var(--line); }
.usp:last-child { border-right: 0; }
.usp-n { font-size: 11px; font-weight: 700; color: var(--brand); letter-spacing: .1em; }
.usp h3 { font-size: 16.5px; margin: 10px 0 9px; }
.usp p { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ---------- category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.cat-card { position: relative; padding: 26px 24px 24px; border: 1px solid var(--line); border-radius: var(--r); background: #fff; transition: .2s ease; overflow: hidden; }
.cat-card::after { content: ""; position: absolute; inset: auto 0 0 0; height: 3px; background: linear-gradient(90deg, var(--brand), #6b2bd9); transform: scaleX(0); transform-origin: left; transition: .3s; }
.cat-card:hover { border-color: #cdd9ea; transform: translateY(-3px); box-shadow: var(--shadow); }
.cat-card:hover::after { transform: scaleX(1); }
.cat-idx { font-size: 11.5px; font-weight: 700; color: #b7c5d6; letter-spacing: .08em; }
.cat-card h3 { font-size: 17.5px; margin: 12px 0 8px; }
.cat-card p { font-size: 13.5px; color: var(--muted); min-height: 42px; }
.cat-more { display: inline-block; margin-top: 14px; font-size: 13px; font-weight: 620; color: var(--brand); }

/* ---------- product cards ---------- */
.p-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.p-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; transition: .2s ease; }
.p-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #ccd8e8; }
.p-img { aspect-ratio: 1/1; background: linear-gradient(160deg, #f2f6fc, #e7eef8); display: grid; place-items: center; padding: 18px; }
.p-img img { width: 92%; transition: .35s ease; }
.p-card:hover .p-img img { transform: scale(1.05) rotate(-1deg); }
.p-body { padding: 17px 17px 15px; display: flex; flex-direction: column; flex: 1; }
.p-cat { font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--brand); }
.p-card h3 { font-size: 14.5px; margin: 8px 0 6px; letter-spacing: -.01em; }
.p-tag { font-size: 12.5px; color: var(--muted); line-height: 1.55; flex: 1; }
.p-foot { display: flex; align-items: baseline; justify-content: space-between; margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line); }
.p-price { font-size: 15px; font-weight: 700; color: var(--ink); }
.p-price i { font-style: normal; font-size: 10px; color: var(--muted); margin-left: 3px; font-weight: 500; }
.p-moq { font-size: 11.5px; color: var(--muted); }

/* ---------- split / steps ---------- */
.split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: start; }
.split-faq { grid-template-columns: .8fr 1.2fr; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.step { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.step:first-child { padding-top: 0; }
.step-n { font-size: 12px; font-weight: 700; color: var(--brand); background: var(--brand-l); border-radius: 8px; width: 34px; height: 34px; display: grid; place-items: center; flex: none; }
.step h4 { font-size: 15.5px; margin-bottom: 5px; }
.step p { font-size: 13.5px; color: var(--muted); }
.steps-lg { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; }
.steps-lg .step { padding: 26px 0; }

/* ---------- gallery ---------- */
.gal { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gal-lg { grid-template-columns: repeat(3, 1fr); }
.gal-item { margin: 0; border-radius: var(--r); overflow: hidden; background: #10233a; border: 1px solid rgba(255,255,255,.1); }
.gal-item img { aspect-ratio: 4/3; object-fit: cover; width: 100%; transition: .4s; }
.gal-item:hover img { transform: scale(1.04); }
.gal-item figcaption { font-size: 12px; color: #9fb4c9; padding: 10px 13px; background: rgba(255,255,255,.04); }
.sec:not(.sec-dark) .gal-item { background: #fff; border-color: var(--line); }
.sec:not(.sec-dark) .gal-item figcaption { color: var(--muted); background: var(--soft); }

/* ---------- certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cert-grid-lg { grid-template-columns: repeat(2, 1fr); gap: 16px; }
.cert { border: 1px solid var(--line); border-radius: var(--r); padding: 22px 20px; background: #fff; }
.cert-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.cert-top b { font-size: 15px; color: var(--ink); }
.chip { font-size: 10.5px; font-weight: 650; color: var(--accent); background: var(--accent-l); padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.cert p { font-size: 12.8px; color: var(--muted); line-height: 1.6; }
.cert-lg { padding: 26px 26px 24px; }
.cert-lg p { font-size: 13.5px; margin-bottom: 14px; }

/* ---------- faq ---------- */
.faq { display: flex; flex-direction: column; gap: 10px; }
.faq-item { border: 1px solid var(--line); border-radius: var(--r-sm); background: #fff; padding: 0 20px; }
.faq-item summary { cursor: pointer; padding: 17px 0; font-weight: 600; color: var(--ink); font-size: 15px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--brand); font-weight: 500; font-size: 19px; line-height: 1; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 0 18px; font-size: 14px; color: var(--muted); }
.faq-lg .faq-item summary { font-size: 16px; }

/* ---------- cta / form ---------- */
.cta-sec { background: linear-gradient(135deg, #0c1b2b 0%, #13305a 100%); }
.cta-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 56px; align-items: start; }
.cta-list { list-style: none; padding: 0; margin: 26px 0 0; display: flex; flex-direction: column; gap: 11px; }
.cta-list li { font-size: 14px; color: #a9bdd2; padding-left: 26px; position: relative; }
.cta-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.cta-sec-inline { padding: 0; background: none; }
.cta-sec-inline .cta-grid { grid-template-columns: 1fr; gap: 0; }
.cta-sec-inline .cta-copy { display: none; }
.form { background: #fff; border-radius: 18px; padding: 26px; box-shadow: var(--shadow-lg); }
.cta-sec-inline .form { box-shadow: none; border: 1px solid var(--line); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: block; margin-bottom: 12px; }
.field > span { display: block; font-size: 12px; font-weight: 600; color: var(--ink-soft); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 9px; padding: 11px 13px;
  font-family: inherit; font-size: 14px; color: var(--ink); background: #fbfcfe; transition: .15s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand); background: #fff; box-shadow: 0 0 0 3px rgba(22, 82, 214, .12); }
.field textarea { resize: vertical; }
.form-note { font-size: 11.5px; color: var(--muted); margin-top: 10px; text-align: center; }
.form-ok { margin-top: 12px; padding: 12px 14px; border-radius: 9px; background: var(--accent-l); color: #056b4e; font-size: 13.5px; font-weight: 600; }
.form-err { background: #fef2f2; color: #b91c1c; }

/* ---------- page hero ---------- */
.page-hero { background: linear-gradient(180deg, #f7f9fd, #fff); border-bottom: 1px solid var(--line); padding: 56px 0 44px; }
.page-hero-lg { padding: 66px 0 54px; }
.page-hero h1 { font-size: clamp(28px, 3.4vw, 42px); letter-spacing: -.035em; margin-bottom: 6px; }
.crumb { font-size: 12.5px; color: var(--muted); margin-bottom: 18px; }
.crumb a:hover { color: var(--brand); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 26px; }
.chip-btn { font-size: 13px; font-weight: 550; padding: 8px 15px; border-radius: 999px; border: 1px solid var(--line); background: #fff; color: var(--ink-soft); }
.chip-btn:hover { border-color: #c3d1e4; }
.chip-btn.is-on { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- product detail ---------- */
.pdp { padding: 34px 0 0; }
.pdp-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: start; padding-bottom: 64px; }
.gmain { border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(160deg, #f6f9fd, #eaf0fa); aspect-ratio: 1/1; display: grid; place-items: center; padding: 34px; }
.gmain img { width: 88%; }
.gthumbs { display: flex; gap: 10px; margin-top: 12px; }
.gthumb { width: 76px; height: 76px; border: 1px solid var(--line); border-radius: 10px; background: #fff; padding: 6px; cursor: pointer; }
.gthumb.is-on { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(22,82,214,.12); }
.badges { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.badge { font-size: 11.5px; font-weight: 600; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 6px; padding: 4px 9px; background: #fff; }
.pdp-info h1 { font-size: clamp(26px, 3vw, 36px); margin: 8px 0 10px; letter-spacing: -.035em; }
.pdp-info .lead { font-size: 15.5px; margin-top: 0; }
.hl { list-style: none; padding: 0; margin: 20px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }
.hl li { font-size: 13.5px; color: var(--body); padding-left: 20px; position: relative; }
.hl li::before { content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.metacards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 26px 0 22px; }
.meta { background: var(--soft); border-radius: 10px; padding: 12px 12px 10px; }
.meta span { display: block; font-size: 10.5px; color: var(--muted); letter-spacing: .02em; }
.meta b { font-size: 16px; color: var(--ink); letter-spacing: -.02em; }
.pdp-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.pdp-note { font-size: 12px; color: var(--muted); margin-top: 16px; line-height: 1.7; }

.spec-wrap { display: grid; grid-template-columns: 1.55fr .45fr; gap: 28px; align-items: start; }
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.spec-table tr:nth-child(odd) { background: #fbfcfe; }
.spec-table th { text-align: left; font-size: 13px; font-weight: 600; color: var(--muted); padding: 13px 18px; width: 38%; border-bottom: 1px solid var(--line-2); }
.spec-table td { font-size: 13.5px; color: var(--ink); padding: 13px 18px; border-bottom: 1px solid var(--line-2); }
.spec-side { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 22px 20px; }
.spec-side h3 { font-size: 15px; margin-bottom: 8px; }
.spec-side > p { font-size: 12.5px; color: var(--muted); margin-bottom: 14px; }
.doc-list { list-style: none; padding: 0; margin: 0 0 16px; }
.doc-list li { font-size: 13px; padding: 7px 0 7px 20px; position: relative; border-bottom: 1px dashed var(--line-2); }
.doc-list li::before { content: "▤"; position: absolute; left: 0; color: var(--brand); font-size: 11px; }
.desc { margin-top: 40px; max-width: 780px; }
.desc p { font-size: 15px; color: var(--body); margin-bottom: 14px; }
.empty { color: var(--muted); padding: 40px 0; }

/* ---------- timeline ---------- */
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tl-item { border: 1px solid rgba(255,255,255,.12); border-radius: var(--r); padding: 24px 22px; background: rgba(255,255,255,.03); }
.tl-date { font-size: 11.5px; font-weight: 700; letter-spacing: .08em; color: #6f9dff; }
.tl-item h4 { color: #fff; font-size: 16px; margin: 10px 0 9px; }
.tl-item p { font-size: 13px; color: #9fb4c9; }

/* ---------- deliver list ---------- */
.deliver { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.deliver li { border: 1px solid var(--line); border-radius: var(--r-sm); padding: 16px 18px; background: #fff; }
.deliver b { display: block; font-size: 14px; color: var(--ink); margin-bottom: 4px; }
.deliver span { font-size: 12.5px; color: var(--muted); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 22px; }
.ci h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 6px; font-weight: 700; }
.ci a, .ci p { font-size: 15px; color: var(--ink); }
.ci a:hover { color: var(--brand); }

/* ---------- footer ---------- */
.ftr { background: #08131f; color: #8fa4ba; padding: 62px 0 26px; margin-top: 0; }
.ftr-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.09); }
.ftr h4 { color: #fff; font-size: 12.5px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 14px; }
.ftr-grid > div > a { display: block; font-size: 13.5px; padding: 5px 0; color: #a9bdd2; }
.ftr-grid > div > a:hover { color: #fff; }
.ftr-brand p { font-size: 13px; margin-top: 12px; }
.logo-ftr .logo-txt { color: #fff; }
.logo-ftr .logo-txt em { color: #7b8fa4; }
.ftr-btn { margin-top: 14px; }
.ftr-bot { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; font-size: 12px; color: #6c8098; flex-wrap: wrap; }

/* ---------- responsive ---------- */
@media (max-width: 1040px) {
  .p-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid, .cta-grid, .pdp-grid, .spec-wrap, .contact-grid, .split, .split-faq { grid-template-columns: 1fr; gap: 36px; }
  .hero-art { max-width: 440px; }
  .timeline { grid-template-columns: 1fr; }
  .ftr-grid { grid-template-columns: 1fr 1fr; }
  .steps-lg { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .nav-links { position: fixed; inset: 112px 0 auto 0; background: #fff; flex-direction: column; padding: 14px 20px 22px; border-bottom: 1px solid var(--line); display: none; gap: 2px; box-shadow: var(--shadow); }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 12px 10px; }
  .burger { display: flex; }
  .nav-cta .btn-ghost { display: none; }
  .usp-grid { grid-template-columns: 1fr; }
  .usp { border-right: 0; border-bottom: 1px solid var(--line); }
  .cat-grid { grid-template-columns: 1fr 1fr; }
  .p-grid { grid-template-columns: 1fr 1fr; }
  .gal, .gal-lg { grid-template-columns: 1fr 1fr; }
  .sec { padding: 58px 0; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 18px; }
  .metacards { grid-template-columns: 1fr 1fr; }
  .deliver { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
  .tb-hide { display: none; }
  .tb-right { gap: 12px; font-size: 11.5px; }
}
@media (max-width: 560px) {
  .cat-grid, .p-grid, .gal, .gal-lg, .cert-grid, .hl { grid-template-columns: 1fr; }
  .ftr-grid { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 62px; }
  .hero h1 { font-size: 30px; }
  .logo-txt em { display: none; }
  .spec-table th { width: 44%; }
  .form { padding: 20px; }
}