:root {
  --navy-950: #031a35;
  --navy-900: #082a57;
  --navy-800: #0b3b76;
  --blue-600: #1267d6;
  --blue-500: #2f8cff;
  --blue-100: #e8f2ff;
  --cyan-400: #55d9ee;
  --ink: #10263f;
  --muted: #5b7088;
  --line: #dce6f0;
  --soft: #f4f8fc;
  --white: #ffffff;
  --orange: #f36b21;
  --shadow: 0 18px 55px rgba(8, 42, 87, .12);
  --radius: 20px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.container { width: calc(100% - 40px); max-width: var(--max); min-width: 0; margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 200; padding: 10px 16px; color: #fff; background: var(--navy-900); border-radius: 8px; }
.skip-link:focus { top: 12px; }

.topbar { color: #d7e8fb; background: var(--navy-950); font-size: .82rem; }
.topbar-inner { min-height: 36px; display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.topbar a:hover { color: #fff; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(220,230,240,.9); backdrop-filter: blur(16px); }
.nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand img { width: 204px; height: auto; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { padding: 11px 13px; border-radius: 10px; color: #2d4661; font-size: .92rem; font-weight: 700; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--blue-600); background: var(--blue-100); }
.nav-cta { margin-left: 8px; color: #fff !important; background: var(--blue-600) !important; }
.nav-cta:hover { background: var(--navy-800) !important; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: var(--navy-900); transition: .2s; }

.hero { position: relative; overflow: hidden; color: #fff; background: var(--navy-950); }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .16; background-image: linear-gradient(rgba(85,217,238,.3) 1px, transparent 1px), linear-gradient(90deg, rgba(85,217,238,.3) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(90deg, #000, transparent 75%); }
.hero::after { content: ""; position: absolute; width: 640px; height: 640px; right: -180px; top: -250px; border-radius: 50%; background: radial-gradient(circle, rgba(47,140,255,.28), transparent 65%); }
.hero-inner { position: relative; z-index: 2; min-height: 660px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 64px; padding-block: 76px; }
.hero-inner > *, .content-grid > *, .contact-grid > *, .product-grid > *, .footer-main > * { min-width: 0; }
.eyebrow { margin: 0 0 16px; color: var(--cyan-400); font-size: .82rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow.dark { color: var(--blue-600); }
.hero h1 { max-width: 720px; margin: 0; font-size: clamp(2.45rem, 5.3vw, 4.4rem); line-height: 1.08; letter-spacing: -.04em; }
.hero h1 span { display: block; margin-top: 12px; color: #a8d0ff; font-size: .53em; letter-spacing: -.02em; }
.hero-lead { max-width: 650px; margin: 26px 0 0; color: #c9d9ea; font-size: 1.08rem; }
.service-line { margin: 18px 0 0; color: #fff; font-weight: 700; letter-spacing: .03em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border: 1px solid transparent; border-radius: 10px; font-weight: 800; transition: transform .2s, background .2s, border-color .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--blue-600); box-shadow: 0 10px 28px rgba(18,103,214,.3); }
.btn-primary:hover { background: #0d56b6; }
.btn-secondary { color: #fff; border-color: rgba(255,255,255,.36); background: rgba(255,255,255,.06); }
.btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,.12); }
.btn-outline { color: var(--navy-900); border-color: #aac3dc; background: #fff; }
.btn-outline:hover { border-color: var(--blue-600); color: var(--blue-600); }
.trust-row { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 34px; color: #a9bdd0; font-size: .88rem; }
.trust-row span::before { content: ""; width: 7px; height: 7px; display: inline-block; margin-right: 8px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 12px var(--cyan-400); }
.hero-stage { position: relative; min-height: 480px; }
.stage-ring { position: absolute; inset: 28px 0 0 28px; border: 1px solid rgba(85,217,238,.22); border-radius: 50%; }
.stage-ring::before, .stage-ring::after { content: ""; position: absolute; border: 1px solid rgba(85,217,238,.16); border-radius: 50%; }
.stage-ring::before { inset: 44px; }
.stage-ring::after { inset: 92px; }
.instrument-card { position: absolute; overflow: hidden; border: 1px solid rgba(255,255,255,.22); border-radius: 16px; background: #fff; box-shadow: 0 22px 60px rgba(0,0,0,.28); }
.instrument-card img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.instrument-card.main { width: 82%; height: 270px; right: 0; top: 38px; transform: rotate(-2deg); }
.instrument-card.small-a { width: 52%; height: 170px; left: 0; bottom: 20px; transform: rotate(3deg); }
.instrument-card.small-b { width: 47%; height: 150px; right: 10px; bottom: 0; transform: rotate(-3deg); }
.spec-float { position: absolute; right: -10px; top: 285px; z-index: 5; padding: 12px 16px; border: 1px solid rgba(255,255,255,.25); border-radius: 12px; background: rgba(3,26,53,.8); backdrop-filter: blur(12px); }
.spec-float strong { display: block; font-size: 1.1rem; }
.spec-float span { color: #a9bdd0; font-size: .75rem; }

.section { padding-block: 92px; }
.section.soft { background: var(--soft); }
.section.dark { color: #fff; background: var(--navy-950); }
.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head.split { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.section h2, .page-hero h1 { margin: 0; color: var(--navy-950); font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.18; letter-spacing: -.03em; }
.section.dark h2 { color: #fff; }
.section-head p:not(.eyebrow) { margin: 14px 0 0; color: var(--muted); }
.section.dark .section-head p:not(.eyebrow) { color: #b9cadc; }
.text-link { color: var(--blue-600); font-weight: 800; }
.text-link:hover { color: var(--navy-900); }

.category-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.category-card { min-height: 230px; position: relative; display: flex; flex-direction: column; padding: 24px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: .25s; }
.category-card:hover { transform: translateY(-5px); border-color: #9ac6f5; box-shadow: var(--shadow); }
.category-num { color: #91a4b8; font-size: .74rem; font-weight: 900; letter-spacing: .13em; }
.category-icon { width: 52px; height: 52px; display: grid; place-items: center; margin: 22px 0 30px; border-radius: 14px; color: var(--blue-600); background: var(--blue-100); }
.category-icon svg { width: 28px; height: 28px; }
.category-card h3 { margin: 0; color: var(--navy-950); font-size: 1.1rem; line-height: 1.35; }
.category-card p { margin: 8px 0 0; color: var(--muted); font-size: .86rem; }
.category-arrow { position: absolute; right: 22px; bottom: 20px; color: var(--blue-600); font-size: 1.25rem; }

.brand-strip { display: grid; grid-template-columns: 1fr 1fr .7fr; gap: 18px; }
.brand-panel { min-height: 250px; display: flex; flex-direction: column; justify-content: space-between; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.brand-panel.featured { color: #fff; border-color: transparent; background: linear-gradient(135deg, var(--navy-900), #0c4b93); }
.brand-word { color: var(--navy-950); font-size: clamp(1.8rem, 3.8vw, 3rem); font-weight: 900; letter-spacing: -.04em; }
.brand-panel.featured .brand-word { color: #fff; }
.brand-panel p { margin: 0; color: var(--muted); }
.brand-panel.featured p { color: #c7daf0; }
.brand-tag { color: var(--blue-600); font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.brand-panel.featured .brand-tag { color: var(--cyan-400); }

.featured-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: .25s; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.product-image { position: relative; height: 225px; display: grid; place-items: center; padding: 18px; background: linear-gradient(145deg, #f8fbfe, #eaf2f9); }
.product-image img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.status-badge { position: absolute; left: 16px; top: 16px; padding: 6px 10px; border-radius: 99px; color: #fff; background: var(--orange); font-size: .72rem; font-weight: 800; }
.product-body { padding: 24px; }
.product-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--blue-600); font-size: .77rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.product-card h3 { margin: 10px 0 0; color: var(--navy-950); font-size: 1.35rem; }
.product-card p { margin: 9px 0 0; color: var(--muted); font-size: .9rem; }
.product-specs { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.product-specs span { padding: 5px 9px; border: 1px solid var(--line); border-radius: 7px; color: #3b5570; background: #f9fbfd; font-size: .74rem; }
.product-actions { display: flex; gap: 10px; margin-top: 20px; }
.product-actions .btn { flex: 1; min-height: 42px; padding: 8px 12px; font-size: .84rem; }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: service; }
.service-card { position: relative; min-height: 260px; padding: 28px; overflow: hidden; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); background: rgba(255,255,255,.055); }
.service-card::after { counter-increment: service; content: "0" counter(service); position: absolute; right: 18px; bottom: -24px; color: rgba(255,255,255,.045); font-size: 7rem; font-weight: 900; line-height: 1; }
.service-card h3 { margin: 26px 0 10px; font-size: 1.22rem; }
.service-card p { margin: 0; color: #afc4d9; font-size: .9rem; }
.service-symbol { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid rgba(85,217,238,.35); border-radius: 12px; color: var(--cyan-400); font-weight: 900; }

.cta-band { padding-block: 64px; color: #fff; background: linear-gradient(115deg, var(--blue-600), var(--navy-900)); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.cta-inner h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.6rem); line-height: 1.2; }
.cta-inner p { margin: 8px 0 0; color: #d5e8ff; }
.cta-inner .btn { flex: 0 0 auto; color: var(--navy-900); background: #fff; }

.site-footer { color: #9fb4c8; background: #021328; }
.footer-main { display: grid; grid-template-columns: 1.5fr .7fr .8fr 1.1fr; gap: 54px; padding-block: 68px; }
.footer-brand img { width: 204px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 400px; margin: 20px 0 0; }
.footer-col h3 { margin: 0 0 18px; color: #fff; font-size: .95rem; }
.footer-col a, .footer-col span { display: block; margin: 8px 0; font-size: .88rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: .78rem; }

.wechat-float { position: fixed; right: 22px; bottom: 22px; z-index: 90; }
.wechat-button { width: 58px; height: 58px; display: grid; place-items: center; border: 0; border-radius: 18px; color: #fff; background: #15a05c; box-shadow: 0 12px 30px rgba(0,0,0,.22); font-weight: 900; }
.wechat-panel { width: 240px; position: absolute; right: 0; bottom: 70px; padding: 16px; visibility: hidden; opacity: 0; transform: translateY(8px); border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); transition: .2s; }
.wechat-panel.open, .wechat-float:hover .wechat-panel { visibility: visible; opacity: 1; transform: translateY(0); }
.wechat-panel img { width: 100%; aspect-ratio: 1 / 1.22; object-fit: cover; object-position: center 58%; border-radius: 10px; }
.wechat-panel strong { display: block; margin-top: 10px; color: var(--navy-950); text-align: center; }
.wechat-panel span { display: block; color: var(--muted); font-size: .78rem; text-align: center; }

.page-hero { color: #fff; background: var(--navy-950); }
.page-hero .container { position: relative; min-height: 340px; display: flex; flex-direction: column; justify-content: center; padding-block: 56px; overflow: hidden; }
.page-hero h1 { color: #fff; }
.page-hero p:not(.eyebrow) { max-width: min(720px, 100%); margin: 18px 0 0; color: #bed0e1; font-size: 1.03rem; }
.page-hero .watermark { position: absolute; right: 0; bottom: -40px; color: rgba(255,255,255,.035); font-size: clamp(6rem, 16vw, 12rem); font-weight: 900; letter-spacing: -.08em; line-height: 1; }
.breadcrumb { display: flex; gap: 8px; margin-top: 28px; color: #8fa9c4; font-size: .82rem; }
.breadcrumb a:hover { color: #fff; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.filter-button { min-height: 44px; padding: 9px 16px; border: 1px solid var(--line); border-radius: 10px; color: #3d5670; background: #fff; font-weight: 800; font-size: .88rem; }
.filter-button:hover, .filter-button.active { color: #fff; border-color: var(--blue-600); background: var(--blue-600); }
.catalog-toolbar { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin: -8px 0 30px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--soft); }
.catalog-search { width: min(440px, 100%); }
.catalog-search span { display: block; margin-bottom: 7px; color: #35506d; font-size: .82rem; font-weight: 800; }
.catalog-search input { width: 100%; min-height: 46px; padding: 10px 14px; border: 1px solid #b9ccdf; border-radius: 9px; color: var(--ink); background: #fff; outline: none; }
.catalog-search input:focus { border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(47,140,255,.14); }
.product-count { margin: 0; color: var(--muted); font-size: .86rem; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.load-more-wrap { display: flex; justify-content: center; margin-top: 34px; }
.load-more-wrap .btn[hidden] { display: none; }
.empty-state { padding: 36px; border: 1px dashed #abc1d8; border-radius: var(--radius); color: var(--muted); text-align: center; background: var(--soft); }
.source-note { padding-block: 34px; border-top: 1px solid var(--line); background: var(--soft); }
.source-note .container { display: grid; grid-template-columns: 130px 1fr; gap: 24px; }
.source-note strong { color: var(--navy-900); }
.source-note p { margin: 0; color: var(--muted); font-size: .88rem; }

.product-modal { width: min(940px, calc(100% - 28px)); max-height: calc(100vh - 42px); padding: 0; overflow: visible; border: 0; border-radius: 24px; box-shadow: 0 32px 100px rgba(0,0,0,.35); }
.product-modal::backdrop { background: rgba(3,26,53,.72); backdrop-filter: blur(5px); }
.modal-close { width: 42px; height: 42px; position: absolute; z-index: 5; right: -12px; top: -12px; border: 3px solid #fff; border-radius: 50%; color: #fff; background: var(--navy-900); font-size: 1.6rem; line-height: 1; }
.modal-grid { display: grid; grid-template-columns: .9fr 1.1fr; max-height: calc(100vh - 42px); overflow: auto; border-radius: 24px; }
.modal-image-wrap { min-height: 460px; display: grid; place-items: center; padding: 32px; background: linear-gradient(145deg, #f7fbff, #e6f0fa); }
.modal-image-wrap img { width: 100%; max-height: 440px; object-fit: contain; mix-blend-mode: multiply; }
.modal-content { padding: 42px; }
.modal-content h2 { margin: 0; color: var(--navy-950); font-size: 2rem; line-height: 1.25; }
.modal-content h3 { margin: 24px 0 8px; color: var(--navy-950); font-size: .92rem; }
.modal-content p { margin: 12px 0 0; color: var(--muted); font-size: .92rem; }
.market-label { display: inline-block; margin-top: 12px; padding: 5px 10px; border-radius: 7px; color: #a54814; background: #fff0e7; font-size: .76rem; font-weight: 800; }
.spec-list { display: grid; grid-template-columns: 1fr; gap: 7px; margin: 0; padding: 0; list-style: none; }
.spec-list li { padding: 8px 12px; border-left: 3px solid var(--blue-500); color: #304b68; background: var(--soft); font-size: .85rem; }
.modal-actions { display: flex; gap: 10px; margin-top: 28px; }
.modal-actions .btn { flex: 1; }

.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.content-grid.reverse > :first-child { order: 2; }
.content-copy h2 { margin-bottom: 20px; }
.content-copy p { color: var(--muted); }
.check-list { display: grid; gap: 12px; margin: 28px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; color: #2f4a65; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--blue-600); font-size: .72rem; font-weight: 900; }
.visual-panel { min-height: 430px; position: relative; overflow: hidden; border-radius: 28px; background: var(--navy-950); box-shadow: var(--shadow); }
.visual-panel.grid-bg { background-image: linear-gradient(rgba(85,217,238,.11) 1px, transparent 1px), linear-gradient(90deg, rgba(85,217,238,.11) 1px, transparent 1px), linear-gradient(135deg, #031a35, #0b3b76); background-size: 32px 32px, 32px 32px, auto; }
.visual-panel .signal { position: absolute; inset: 30px; display: grid; place-items: center; }
.visual-panel .signal svg { width: 88%; color: var(--cyan-400); filter: drop-shadow(0 0 14px rgba(85,217,238,.35)); }
.visual-caption { position: absolute; left: 28px; bottom: 26px; right: 28px; display: flex; justify-content: space-between; gap: 16px; color: #d2e3f5; }
.visual-caption span { color: #8fb0d0; font-size: .78rem; }

.solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.solution-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.solution-card .num { color: var(--blue-500); font-size: .78rem; font-weight: 900; letter-spacing: .12em; }
.solution-card h3 { margin: 28px 0 10px; color: var(--navy-950); font-size: 1.25rem; }
.solution-card p { margin: 0; color: var(--muted); font-size: .9rem; }

.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: process; }
.process-step { position: relative; padding: 26px 24px; border-top: 2px solid var(--line); }
.process-step::before { counter-increment: process; content: counter(process); width: 30px; height: 30px; position: absolute; left: 24px; top: -16px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--blue-600); font-size: .8rem; font-weight: 900; }
.process-step h3 { margin: 14px 0 8px; color: var(--navy-950); font-size: 1rem; }
.process-step p { margin: 0; color: var(--muted); font-size: .82rem; }
.capability-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.capability { display: grid; grid-template-columns: 58px 1fr; gap: 18px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.capability-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px; color: var(--blue-600); background: var(--blue-100); font-weight: 900; }
.capability h3 { margin: 0; color: var(--navy-950); font-size: 1.08rem; }
.capability p { margin: 6px 0 0; color: var(--muted); font-size: .88rem; }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.stat-card strong { display: block; color: var(--navy-950); font-size: 2rem; }
.stat-card span { color: var(--muted); font-size: .86rem; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.principle { padding: 28px; border-left: 3px solid var(--blue-500); background: rgba(255,255,255,.06); }
.principle h3 { margin: 0; color: #fff; }
.principle p { margin: 9px 0 0; color: #adc2d8; font-size: .9rem; }

.contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 42px; align-items: start; }
.contact-panel { overflow: hidden; border-radius: 24px; color: #fff; background: var(--navy-950); }
.contact-panel-main { min-width: 0; padding: 34px; }
.contact-panel h2 { margin: 0; color: #fff; font-size: 1.7rem; }
.contact-panel p { color: #aec3d9; }
.contact-list { display: grid; gap: 18px; margin-top: 28px; }
.contact-item small { display: block; color: #7f9bb7; font-size: .74rem; }
.contact-item a, .contact-item span { display: block; margin-top: 3px; color: #fff; font-weight: 700; }
.contact-item a, .contact-item span, .hero-lead, .page-hero p, .contact-panel p { overflow-wrap: anywhere; word-break: break-word; }
.contact-qr { display: grid; grid-template-columns: 118px 1fr; gap: 18px; align-items: center; padding: 24px 34px; background: #0b3b76; }
.contact-qr img { width: 118px; height: 142px; object-fit: cover; object-position: center 58%; border-radius: 10px; background: #fff; }
.contact-qr strong { display: block; }
.contact-qr span { display: block; margin-top: 5px; color: #bcd1e8; font-size: .82rem; }
.inquiry-form { padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.inquiry-form h2 { margin: 0; color: var(--navy-950); font-size: 1.7rem; }
.inquiry-form > p { margin: 8px 0 26px; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { display: block; margin-bottom: 7px; color: #2b4560; font-size: .86rem; font-weight: 800; }
.form-field input, .form-field textarea, .form-field select { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #bfd0e1; border-radius: 9px; color: var(--ink); background: #fff; outline: none; }
.form-field textarea { min-height: 130px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(47,140,255,.14); }
.form-help { margin-top: 14px; color: var(--muted); font-size: .78rem; }
.form-status { min-height: 28px; margin-top: 14px; color: #0d7b49; font-weight: 700; }
.form-status.error { color: #b42318; }
.form-status.success { color: #087443; }
.botcheck { display: none !important; }
.inquiry-form button:disabled { cursor: wait; opacity: .68; transform: none; }
.inquiry-form .btn { width: 100%; margin-top: 8px; border: 0; }

.deploy-note { padding: 24px; border: 1px solid #cfe0f1; border-radius: 16px; color: #36516d; background: #f3f8fd; }

@media (max-width: 980px) {
  .main-nav { display: none; position: fixed; inset: 112px 0 0; padding: 24px 20px; align-items: stretch; flex-direction: column; background: #fff; }
  .main-nav.open { display: flex; }
  .main-nav a { font-size: 1rem; }
  .nav-cta { margin: 8px 0 0; text-align: center; }
  .menu-toggle { display: block; }
  .hero-inner { min-height: auto; grid-template-columns: 1fr; gap: 24px; padding-block: 64px; }
  .hero-stage { min-height: 400px; width: min(620px, 100%); margin-inline: auto; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .category-card:nth-child(4), .category-card:nth-child(5) { grid-column: span 1; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .product-grid, .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid { gap: 36px; }
  .process { grid-template-columns: repeat(3, 1fr); gap: 22px 0; }
  .contact-grid { width: 100%; grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 680px) {
  .container { width: calc(100% - 28px); max-width: var(--max); }
  .topbar-inner { min-height: 40px; justify-content: center; }
  .topbar-inner span:first-child { display: none; }
  .nav-wrap { min-height: 68px; }
  .brand img { width: 172px; }
  .main-nav { inset: 108px 0 0; }
  .hero-inner { padding-block: 52px 34px; }
  .hero h1 { font-size: 2.65rem; }
  .hero-actions .btn { width: 100%; }
  .trust-row { gap: 9px 16px; }
  .hero-stage { min-height: 330px; }
  .instrument-card.main { width: 92%; height: 190px; }
  .instrument-card.small-a { width: 58%; height: 130px; }
  .instrument-card.small-b { width: 52%; height: 118px; }
  .spec-float { top: 205px; right: 2px; }
  .section { padding-block: 66px; }
  .section-head.split { display: block; }
  .section-head.split .text-link { display: inline-block; margin-top: 14px; }
  .category-grid, .featured-products, .brand-strip, .service-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 190px; }
  .brand-panel { min-height: 220px; }
  .cta-inner { align-items: flex-start; flex-direction: column; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 34px 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 4px; }
  .wechat-float { right: 14px; bottom: 14px; }
  .wechat-panel { width: 220px; }
  .catalog-toolbar { align-items: stretch; flex-direction: column; gap: 12px; }
  .product-grid, .solution-grid, .content-grid, .capability-grid, .stat-grid, .principles { grid-template-columns: 1fr; }
  .content-grid.reverse > :first-child { order: initial; }
  .visual-panel { min-height: 330px; }
  .source-note .container { grid-template-columns: 1fr; gap: 5px; }
  .modal-grid { grid-template-columns: 1fr; }
  .modal-image-wrap { min-height: 240px; padding: 20px; }
  .modal-content { padding: 28px 22px; }
  .modal-actions { flex-direction: column; }
  .process { grid-template-columns: 1fr; gap: 0; }
  .process-step { border-top: 0; border-left: 2px solid var(--line); padding: 16px 24px 26px 36px; }
  .process-step::before { left: -16px; top: 14px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field.full { grid-column: auto; }
  .contact-qr { grid-template-columns: minmax(0, 96px) minmax(0, 1fr); padding: 22px; }
  .contact-qr img { width: 96px; height: 118px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}