:root {
  --primary: #087fbd;
  --primary-dark: #075985;
  --primary-deep: #062f4f;
  --primary-soft: #e9f6fc;
  --accent: #ff9d16;
  --accent-strong: #f56b1a;
  --ink: #142433;
  --muted: #5f7180;
  --line: #dbe5ec;
  --surface: #f5f9fc;
  --white: #fff;
  --shadow: 0 18px 50px rgba(6, 47, 79, .1);
  --radius: 18px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 96px 0; }
.section-soft { background: var(--surface); }
.section-dark { color: var(--white); background: var(--primary-deep); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow::before { width: 24px; height: 2px; content: ""; background: var(--accent); }
.section-title { margin: 0; font-size: clamp(30px, 4vw, 46px); line-height: 1.2; letter-spacing: -.02em; }
.section-lead { max-width: 680px; margin: 18px 0 0; color: var(--muted); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 44px; }
.section-head .section-lead { margin-bottom: 2px; }
.text-link { color: var(--primary-dark); font-weight: 700; white-space: nowrap; }
.text-link::after { margin-left: 7px; content: "→"; transition: margin-left .2s ease; }
.text-link:hover::after { margin-left: 11px; }
.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 10px 24px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--white); background: linear-gradient(135deg, var(--primary), #0da4d9); box-shadow: 0 10px 24px rgba(8, 127, 189, .24); }
.btn-secondary { color: var(--primary-deep); background: var(--white); border-color: var(--line); }
.btn-light { color: var(--primary-deep); background: var(--white); }
.btn-outline-light { color: var(--white); border-color: rgba(255,255,255,.42); }

.skip-link { position: fixed; top: -60px; left: 16px; z-index: 2000; padding: 8px 14px; color: #fff; background: var(--primary-deep); }
.skip-link:focus { top: 10px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(219, 229, 236, .75);
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(14px);
  transition: box-shadow .2s ease;
}
.site-header.scrolled { box-shadow: 0 8px 30px rgba(6,47,79,.08); }
.nav-wrap { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; min-width: 225px; align-items: center; gap: 11px; }
.brand img { width: 60px; height: 44px; object-fit: contain; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { color: var(--primary-deep); font-size: 19px; font-weight: 800; letter-spacing: .05em; }
.brand-en { margin-top: 4px; color: var(--muted); font-size: 9px; letter-spacing: .14em; }
.site-nav { display: flex; align-items: center; gap: clamp(22px, 3vw, 40px); }
.site-nav a { position: relative; padding: 26px 0 23px; color: #334a5b; font-size: 15px; font-weight: 650; }
.site-nav a::after { position: absolute; right: 0; bottom: 17px; left: 0; height: 2px; content: ""; background: var(--primary); transform: scaleX(0); transition: transform .2s ease; }
.site-nav a:hover, .site-nav a.active { color: var(--primary); }
.site-nav a:hover::after, .site-nav a.active::after { transform: scaleX(1); }
.nav-contact { display: flex; align-items: center; gap: 10px; color: var(--primary-dark); font-weight: 800; white-space: nowrap; }
.nav-contact svg { width: 18px; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; }
.menu-toggle span { display: block; height: 2px; margin: 6px 0; border-radius: 2px; background: var(--primary-deep); transition: transform .2s ease, opacity .2s ease; }

.hero { position: relative; min-height: 650px; overflow: hidden; background: linear-gradient(110deg, #f8fcff 0%, #edf8fd 52%, #dff2fa 100%); }
.hero::before { position: absolute; inset: 0; content: ""; opacity: .48; background-image: linear-gradient(rgba(8,127,189,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(8,127,189,.07) 1px, transparent 1px); background-size: 52px 52px; mask-image: linear-gradient(to right, transparent, #000); }
.hero-inner { position: relative; display: grid; min-height: 650px; align-items: center; grid-template-columns: 1.05fr .95fr; gap: 56px; }
.hero-copy { padding: 60px 0; }
.hero-kicker { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 20px; color: var(--primary-dark); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.hero-kicker::before { width: 32px; height: 2px; content: ""; background: var(--accent); }
.hero h1 { max-width: 720px; margin: 0; color: var(--primary-deep); font-size: clamp(42px, 5.2vw, 68px); line-height: 1.12; letter-spacing: -.04em; }
.hero h1 span { color: var(--primary); }
.hero-copy > p { max-width: 650px; margin: 24px 0 30px; color: #536c7d; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 40px; }
.hero-meta div { display: flex; align-items: center; gap: 8px; color: #486273; font-size: 14px; font-weight: 650; }
.hero-meta i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px rgba(255,157,22,.13); }
.tech-visual { position: relative; aspect-ratio: 1 / .88; }
.tech-orbit { position: absolute; inset: 9%; border: 1px solid rgba(8,127,189,.22); border-radius: 50%; }
.tech-orbit::before, .tech-orbit::after { position: absolute; content: ""; border: 1px solid rgba(8,127,189,.15); border-radius: 50%; }
.tech-orbit::before { inset: 9%; }
.tech-orbit::after { inset: 23%; }
.tech-panel { position: absolute; inset: 21% 13% 20% 10%; overflow: hidden; border: 8px solid #0a5b82; border-radius: 15px; background: #0d2d40; box-shadow: 0 30px 65px rgba(6,47,79,.26); transform: perspective(900px) rotateY(-8deg) rotateX(3deg); }
.tech-panel::before { position: absolute; inset: 0; content: ""; background: radial-gradient(circle at 70% 25%, rgba(18,182,229,.5), transparent 34%), linear-gradient(140deg, #0b2434, #0b6086); }
.screen-ui { position: absolute; inset: 10%; display: grid; grid-template-columns: .38fr .62fr; gap: 6%; }
.screen-side { border-right: 1px solid rgba(255,255,255,.2); }
.screen-side span, .screen-main span { display: block; margin-bottom: 11%; border-radius: 4px; background: rgba(255,255,255,.18); }
.screen-side span { width: 68%; height: 7px; }
.screen-side span:first-child { width: 35%; height: 24px; background: var(--accent); }
.screen-main span:nth-child(1) { width: 47%; height: 8px; }
.screen-main span:nth-child(2) { height: 42%; background: linear-gradient(90deg, rgba(11,178,218,.4), rgba(255,157,22,.45)); }
.screen-main span:nth-child(3) { width: 76%; height: 8px; }
.circuit-node { position: absolute; width: 12px; height: 12px; border: 3px solid var(--primary); border-radius: 50%; background: #fff; box-shadow: 0 0 0 6px rgba(8,127,189,.1); }
.circuit-node.n1 { top: 15%; right: 13%; }
.circuit-node.n2 { right: 6%; bottom: 17%; }
.circuit-node.n3 { bottom: 9%; left: 20%; border-color: var(--accent); }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.product-card:hover { border-color: rgba(8,127,189,.32); box-shadow: var(--shadow); transform: translateY(-5px); }
.product-visual { position: relative; height: 230px; overflow: hidden; background: linear-gradient(145deg, #eaf7fc, #d8eef7); }
.product-visual::before { position: absolute; inset: 0; content: ""; opacity: .55; background-image: linear-gradient(rgba(8,127,189,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(8,127,189,.08) 1px, transparent 1px); background-size: 24px 24px; }
.device-screen { position: absolute; inset: 20% 18%; border: 7px solid #173f55; border-radius: 9px; background: linear-gradient(135deg, #087fbd, #13aed8); box-shadow: 0 14px 30px rgba(6,47,79,.25); transform: perspective(600px) rotateY(-7deg); }
.device-screen::after { position: absolute; inset: 14%; content: ""; border-radius: 3px; background: linear-gradient(90deg, rgba(255,255,255,.22) 30%, transparent 30%), linear-gradient(rgba(255,255,255,.18) 30%, transparent 30%); background-size: 30px 100%, 100% 25px; }
.board { position: absolute; inset: 17% 15%; border-radius: 10px; background: #076f76; box-shadow: 0 14px 30px rgba(6,47,79,.22); transform: rotate(-4deg); }
.board::before { position: absolute; inset: 16%; content: ""; border: 3px solid #b9dca8; background: repeating-linear-gradient(90deg, transparent 0 18px, rgba(221,234,176,.45) 19px 20px), repeating-linear-gradient(0deg, transparent 0 18px, rgba(221,234,176,.3) 19px 20px); }
.board::after { position: absolute; top: 31%; left: 36%; width: 30%; height: 38%; content: ""; border: 8px dotted #8eb5a2; background: #173f45; }
.control-box { position: absolute; inset: 21% 20%; border-radius: 8px; background: #173f55; box-shadow: 0 14px 30px rgba(6,47,79,.24); }
.control-box::before { position: absolute; inset: 15% 12% 32%; content: ""; border: 2px solid rgba(255,255,255,.3); background: linear-gradient(135deg, #0e779c, #0f2736); }
.control-box::after { position: absolute; right: 18%; bottom: 13%; left: 18%; height: 8px; content: ""; background: repeating-linear-gradient(90deg, var(--accent) 0 8px, transparent 8px 18px); }
.product-body { padding: 26px 26px 28px; }
.product-tag { color: var(--primary); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.product-body h3 { margin: 7px 0 10px; font-size: 23px; }
.product-body p { margin: 0 0 20px; color: var(--muted); font-size: 15px; }

.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.advantage { padding: 30px 26px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.icon-box { display: grid; width: 48px; height: 48px; place-items: center; margin-bottom: 20px; border-radius: 12px; color: var(--primary); background: var(--primary-soft); font-size: 22px; font-weight: 800; }
.advantage h3 { margin: 0 0 8px; font-size: 19px; }
.advantage p { margin: 0; color: var(--muted); font-size: 14px; }
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); background: rgba(255,255,255,.12); }
.industry { position: relative; min-height: 270px; padding: 32px 26px; background: #083b5e; transition: background .25s ease; }
.industry:hover { background: #095480; }
.industry-num { color: rgba(255,255,255,.32); font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.industry h3 { margin: 78px 0 9px; font-size: 23px; }
.industry p { margin: 0; color: rgba(255,255,255,.66); font-size: 14px; }
.industry::after { position: absolute; right: 24px; bottom: 22px; color: var(--accent); content: "+"; font-size: 25px; }
.about-grid { display: grid; align-items: center; grid-template-columns: .9fr 1.1fr; gap: 80px; }
.about-visual { position: relative; min-height: 420px; overflow: hidden; border-radius: 22px; background: linear-gradient(145deg, var(--primary-deep), var(--primary)); }
.about-visual::before { position: absolute; width: 340px; height: 340px; right: -80px; top: -70px; border: 60px solid rgba(255,255,255,.08); border-radius: 50%; content: ""; }
.about-mark { position: absolute; inset: 70px 50px; display: flex; flex-direction: column; justify-content: end; color: #fff; }
.about-mark strong { font-size: 68px; line-height: 1; }
.about-mark span { margin-top: 12px; color: rgba(255,255,255,.72); letter-spacing: .08em; }
.about-content h2 { margin: 0 0 22px; font-size: clamp(30px, 4vw, 44px); line-height: 1.25; }
.about-content p { color: var(--muted); }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); margin: 28px 0 30px; border-block: 1px solid var(--line); }
.stat { padding: 19px 10px 19px 0; }
.stat strong { display: block; color: var(--primary); font-size: 24px; }
.stat span { color: var(--muted); font-size: 13px; }
.contact-band { position: relative; overflow: hidden; color: #fff; background: linear-gradient(120deg, var(--primary), #075985); }
.contact-band::after { position: absolute; top: -120px; right: 5%; width: 390px; height: 390px; border: 70px solid rgba(255,255,255,.06); border-radius: 50%; content: ""; }
.contact-band-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 40px; padding-block: 55px; }
.contact-band h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 40px); }
.contact-band p { margin: 0; color: rgba(255,255,255,.78); }
.contact-band-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.page-hero { position: relative; overflow: hidden; padding: 105px 0 94px; color: #fff; background: linear-gradient(115deg, var(--primary-deep), #086a99); }
.page-hero::before { position: absolute; inset: 0; content: ""; opacity: .19; background-image: linear-gradient(rgba(255,255,255,.2) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.2) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(90deg, transparent 15%, #000); }
.page-hero .container { position: relative; }
.breadcrumb { margin-bottom: 20px; color: rgba(255,255,255,.66); font-size: 14px; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { margin: 0; font-size: clamp(40px, 6vw, 62px); line-height: 1.1; }
.page-hero p { max-width: 680px; margin: 20px 0 0; color: rgba(255,255,255,.76); font-size: 18px; }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.detail-card { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.detail-card h2, .detail-card h3 { margin: 17px 0 10px; font-size: 22px; }
.detail-card p { color: var(--muted); font-size: 15px; }
.feature-list { margin: 19px 0 0; padding: 0; list-style: none; }
.feature-list li { position: relative; margin: 9px 0; padding-left: 20px; color: #42596a; font-size: 14px; }
.feature-list li::before { position: absolute; top: .75em; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); content: ""; transform: translateY(-50%); }
.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: step; }
.process-item { position: relative; padding: 27px 20px; border-top: 3px solid var(--primary); background: #fff; box-shadow: 0 8px 28px rgba(6,47,79,.07); counter-increment: step; }
.process-item::before { color: var(--primary); content: "0" counter(step); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.process-item h3 { margin: 25px 0 6px; font-size: 18px; }
.process-item p { margin: 0; color: var(--muted); font-size: 13px; }
.solution-row { display: grid; align-items: stretch; grid-template-columns: .82fr 1.18fr; gap: 0; overflow: hidden; margin-bottom: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.solution-row:nth-child(even) { grid-template-columns: 1.18fr .82fr; }
.solution-row:nth-child(even) .solution-visual { order: 2; }
.solution-visual { position: relative; min-height: 330px; background: linear-gradient(145deg, #dff3fb, #bce4f3); }
.solution-visual::before { position: absolute; inset: 15%; border: 2px solid rgba(8,127,189,.22); border-radius: 50%; content: ""; box-shadow: 0 0 0 30px rgba(8,127,189,.06), 0 0 0 62px rgba(8,127,189,.04); }
.solution-visual::after { position: absolute; inset: 35% 25%; border-radius: 9px; content: ""; background: var(--primary-deep); box-shadow: 0 15px 34px rgba(6,47,79,.24); }
.solution-copy { display: flex; flex-direction: column; justify-content: center; padding: 48px; }
.solution-copy h2 { margin: 8px 0 14px; font-size: 30px; }
.solution-copy p { margin: 0; color: var(--muted); }
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.about-story h2 { margin: 0; font-size: clamp(32px, 4vw, 46px); line-height: 1.24; }
.about-story p { margin-top: 0; color: var(--muted); }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { padding: 35px; border-left: 3px solid var(--primary); background: #fff; box-shadow: 0 10px 35px rgba(6,47,79,.06); }
.value-card h3 { margin: 16px 0 8px; font-size: 22px; }
.value-card p { margin: 0; color: var(--muted); font-size: 14px; }
.contact-layout { display: grid; align-items: start; grid-template-columns: .85fr 1.15fr; gap: 60px; }
.contact-list { display: grid; gap: 16px; margin-top: 30px; }
.contact-item { display: grid; grid-template-columns: 48px 1fr; gap: 16px; padding: 20px; border: 1px solid var(--line); border-radius: 12px; }
.contact-item .icon-box { width: 48px; height: 48px; margin: 0; }
.contact-item small { display: block; color: var(--muted); }
.contact-item strong { color: var(--primary-deep); font-size: 16px; word-break: break-word; }
.contact-form { padding: 38px; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.contact-form h2 { margin: 0 0 6px; }
.contact-form > p { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 17px; }
.field label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 700; }
.field input, .field textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; outline: none; background: #fbfdfe; padding: 12px 14px; transition: border-color .2s, box-shadow .2s; }
.field textarea { min-height: 138px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(8,127,189,.1); }
.map-placeholder { position: relative; min-height: 380px; overflow: hidden; background: #dcebf1; }
.map-placeholder::before { position: absolute; inset: 0; content: ""; opacity: .7; background: linear-gradient(28deg, transparent 43%, #fff 43% 47%, transparent 47%), linear-gradient(-36deg, transparent 55%, #c4d8e1 55% 59%, transparent 59%); }
.map-pin { position: absolute; top: 50%; left: 50%; width: 48px; height: 48px; border-radius: 50% 50% 50% 0; background: var(--primary); box-shadow: 0 8px 20px rgba(6,47,79,.25); transform: translate(-50%, -70%) rotate(-45deg); }
.map-pin::after { position: absolute; top: 15px; left: 15px; width: 18px; height: 18px; border-radius: 50%; background: #fff; content: ""; }
.map-label { position: absolute; top: calc(50% + 35px); left: 50%; width: min(380px, calc(100% - 30px)); padding: 14px 20px; border-radius: 8px; background: #fff; box-shadow: 0 12px 30px rgba(6,47,79,.14); text-align: center; transform: translateX(-50%); }

.site-footer { color: rgba(255,255,255,.7); background: #051f31; }
.footer-main { display: grid; grid-template-columns: 1.4fr .7fr .8fr 1.1fr; gap: 50px; padding: 66px 0 48px; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: #fff; font-size: 21px; font-weight: 800; }
.footer-brand img { width: 58px; height: 42px; object-fit: contain; border-radius: 4px; }
.footer-intro { max-width: 360px; margin: 19px 0 0; font-size: 14px; }
.footer-main h3 { margin: 5px 0 18px; color: #fff; font-size: 16px; }
.footer-links { display: grid; gap: 8px; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-contact { font-style: normal; font-size: 14px; }
.footer-contact p { margin: 0 0 10px; }
.footer-contact a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 20px 0 24px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }
.footer-records { display: flex; flex-wrap: wrap; justify-content: end; gap: 16px; }
.footer-records a:hover { color: #fff; }
.back-top { position: fixed; right: 22px; bottom: 22px; z-index: 900; display: grid; width: 46px; height: 46px; place-items: center; border: 0; border-radius: 10px; color: #fff; background: var(--primary); box-shadow: 0 8px 22px rgba(6,47,79,.22); opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity .2s, transform .2s; }
.back-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }

@media (max-width: 1050px) {
  .nav-contact { display: none; }
  .hero-inner { gap: 15px; }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .industry { min-height: 225px; }
  .industry h3 { margin-top: 48px; }
  .footer-main { grid-template-columns: 1.2fr .7fr .9fr; }
  .footer-main > div:first-child { grid-column: span 3; }
  .process { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 820px) {
  .section { padding: 72px 0; }
  .menu-toggle { display: block; }
  .site-nav { position: fixed; top: 77px; right: 0; left: 0; display: grid; max-height: 0; gap: 0; overflow: hidden; border-bottom: 1px solid var(--line); background: #fff; opacity: 0; transition: max-height .3s ease, opacity .2s ease; }
  .site-nav.open { max-height: calc(100vh - 77px); opacity: 1; }
  .site-nav a { padding: 16px 24px; border-top: 1px solid #edf2f5; }
  .site-nav a::after { display: none; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .hero, .hero-inner { min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy { padding: 80px 0 30px; }
  .tech-visual { width: min(540px, 100%); margin: -10px auto 35px; }
  .cards-3, .detail-grid, .value-grid { grid-template-columns: 1fr 1fr; }
  .about-grid, .about-story, .contact-layout { grid-template-columns: 1fr; gap: 45px; }
  .about-visual { min-height: 330px; }
  .contact-band-inner { align-items: flex-start; flex-direction: column; }
  .solution-row, .solution-row:nth-child(even) { grid-template-columns: 1fr; }
  .solution-row:nth-child(even) .solution-visual { order: 0; }
  .solution-visual { min-height: 260px; }
  .process { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 30px), var(--container)); }
  .section { padding: 58px 0; }
  .nav-wrap { min-height: 68px; }
  .site-nav { top: 69px; }
  .brand { min-width: 0; }
  .brand img { width: 51px; height: 38px; }
  .brand-name { font-size: 17px; }
  .brand-en { display: none; }
  .hero-copy { padding-top: 65px; }
  .hero h1 { font-size: 39px; }
  .hero-copy > p { font-size: 16px; }
  .hero-actions .btn { width: 100%; }
  .hero-meta { gap: 13px; flex-direction: column; margin-top: 28px; }
  .tech-visual { margin-top: -20px; }
  .tech-panel { border-width: 5px; }
  .section-head { align-items: flex-start; flex-direction: column; margin-bottom: 30px; }
  .cards-3, .detail-grid, .value-grid, .advantage-grid, .industry-grid, .process { grid-template-columns: 1fr; }
  .product-visual { height: 205px; }
  .industry { min-height: 190px; }
  .industry h3 { margin-top: 30px; }
  .about-mark { inset: 50px 30px; }
  .about-mark strong { font-size: 52px; }
  .stat-row { grid-template-columns: 1fr; padding: 10px 0; }
  .stat { padding: 9px 0; }
  .contact-band-actions, .contact-band-actions .btn { width: 100%; }
  .page-hero { padding: 78px 0 70px; }
  .page-hero p { font-size: 16px; }
  .solution-copy { padding: 30px 24px; }
  .solution-visual { min-height: 220px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 26px 20px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 35px 24px; padding: 50px 0 38px; }
  .footer-main > div:first-child { grid-column: span 2; }
  .footer-main > div:last-child { grid-column: span 2; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-records { justify-content: flex-start; }
  .back-top { right: 15px; bottom: 15px; }
}