:root {
  --blue: #1876d2;
  --blue-d: #0b4fa3;
  --navy: #0c2b55;
  --navy-d: #071a38;
  --sky: #5ec6ff;
  --ink: #121a26;
  --body: #344255;
  --muted: #5b6878;
  --soft: #8a96a6;
  --line: #dde4ec;
  --paper: #f3f6fa;
  --bg: #ffffff;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(16, 52, 104, .10);
  --nav-h: 68px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg); color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
body.noscroll { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.num, .en { font-family: "DIN Alternate", "Bahnschrift", "DIN", "Roboto Condensed", "Helvetica Neue", Arial, sans-serif; font-weight: 700; }
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.only-touch { display: none; }
@media (hover: none) { .only-touch { display: block; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 22px; border-radius: 22px; font-size: 15px; font-weight: 600; letter-spacing: .04em;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn-lg { height: 52px; padding: 0 30px; border-radius: 26px; font-size: 16px; }
.btn-primary { background: linear-gradient(135deg, #2b8ef0, var(--blue-d)); color: #fff; box-shadow: 0 10px 24px rgba(24, 118, 210, .28); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(24, 118, 210, .36); }
.btn-ghost { background: #fff; color: var(--blue-d); box-shadow: inset 0 0 0 1.5px #c9daee; }
.btn-ghost:hover { box-shadow: inset 0 0 0 1.5px var(--blue); }
.btn-soft { background: #e9f2fc; color: var(--blue-d); }
.btn-soft:hover { background: #dcebfb; }
.btn:focus-visible, .mtab:focus-visible, .g-thumb:focus-visible { outline: 3px solid rgba(24, 118, 210, .45); outline-offset: 2px; }

/* ---------- nav ---------- */
.nav { position: fixed; z-index: 50; inset: 0 0 auto 0; height: var(--nav-h); transition: background .25s, box-shadow .25s; }
.nav.scrolled, .nav.open { background: rgba(255, 255, 255, .92); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); box-shadow: 0 1px 0 rgba(12, 43, 85, .08); }
.nav-in { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand svg { width: 30px; height: 33px; }
.brand b { display: block; font-size: 18px; letter-spacing: .08em; color: var(--navy); line-height: 1.2; }
.brand small { display: block; font-size: 9.5px; letter-spacing: .28em; color: var(--soft); }
.nav-links { display: flex; gap: 26px; }
.nav-links a { font-size: 15px; color: var(--body); position: relative; padding: 6px 0; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 1px; background: var(--blue); transform: scaleX(0); transition: transform .2s; }
.nav-links a:hover { color: var(--blue-d); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta { height: 38px; padding: 0 18px; font-size: 14px; }
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav-toggle i { display: block; width: 20px; height: 2px; border-radius: 1px; background: var(--navy); transition: transform .2s, opacity .2s; }

/* ---------- section heads ---------- */
section { position: relative; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.sec-head.left { text-align: left; margin: 0 0 22px; }
.eyebrow { display: inline-block; font-size: 13px; letter-spacing: .38em; color: var(--blue); margin-bottom: 10px; }
.sec-head h2 { font-size: clamp(30px, 4vw, 42px); line-height: 1.2; letter-spacing: .06em; font-weight: 800; }
.sec-head p { margin-top: 14px; color: var(--muted); font-size: 17px; }
.kicker { font-size: 13px; letter-spacing: .4em; color: var(--blue); }

/* ---------- hero ---------- */
.hero { padding: calc(var(--nav-h) + 44px) 0 56px; background: linear-gradient(180deg, #eaf1f9 0%, #f4f8fc 62%, #fff 100%); overflow: hidden; }
.hero-art { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-in { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end; }
.hero-text { position: relative; z-index: 2; }
.hero h1 { margin-top: 18px; font-size: clamp(46px, 6.4vw, 86px); line-height: 1.06; font-weight: 800; letter-spacing: .05em; }
.hero h1 em { font-style: normal; color: var(--blue); }
.hero-sub { margin-top: 22px; max-width: 560px; font-size: 18px; line-height: 1.8; color: var(--body); }
.hero-cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }
.qr-card {
  display: flex; align-items: center; gap: 20px; padding: 16px 26px 16px 16px;
  background: #fff; border-radius: 22px; box-shadow: var(--shadow);
}
.qr-card img { width: 136px; height: 136px; border-radius: 10px; }
.qr-card .tel { display: block; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line); }
.qr-card .tel i { display: block; font-style: normal; font-size: 12.5px; color: var(--soft); letter-spacing: .14em; }
.qr-card .tel strong { font-size: 24px; color: var(--blue-d); letter-spacing: .02em; }
.qr-card b { display: block; font-size: 19px; letter-spacing: .1em; color: var(--navy); }
.qr-card span { display: block; margin-top: 4px; font-size: 14px; color: var(--muted); letter-spacing: .06em; }
.qr-card em { font-style: normal; margin-top: 6px; font-size: 12.5px; color: var(--blue); }
.hero-pano { position: relative; z-index: 1; max-width: 1400px; margin: 8px auto 0; padding: 0 24px; }
.hero-pano img { width: 100%; height: auto; }
.stats { position: relative; z-index: 2; margin-top: 18px; display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); }
.stats > div { padding: 22px 26px; border-left: 1px solid var(--line); }
.stats > div:first-child { border-left: 0; }
.stats b { font-size: 40px; line-height: 1; color: var(--blue-d); }
.stats small { margin-left: 4px; font-size: 16px; color: var(--blue); font-weight: 700; }
.stats span { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); letter-spacing: .04em; }

/* ---------- about ---------- */
.about { padding: 96px 0; }
.about-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 64px; align-items: start; }
.about-p { font-size: 18px; line-height: 2; color: var(--body); text-align: justify; }
.about-p b { color: var(--blue-d); }
.scenes { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.scenes span { height: 36px; padding: 0 16px; border-radius: 18px; background: var(--paper); font-size: 14px; line-height: 36px; color: var(--body); }
.scenes .scenes-k { background: none; padding: 0 6px 0 0; color: var(--soft); letter-spacing: .14em; }
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pillar { padding: 24px; border-radius: var(--radius); background: var(--paper); display: grid; gap: 14px; }
.pillar .ic { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; color: #fff; font-size: 20px; background: linear-gradient(135deg, #3aa6f2, var(--blue-d)); }
.pillar h4 { font-size: 20px; letter-spacing: .06em; }
.pillar p { margin-top: 4px; font-size: 14.5px; color: var(--muted); line-height: 1.7; }

/* ---------- product grid ---------- */
.products { padding: 96px 0; background: linear-gradient(180deg, #f5f8fc, #fff); }
.pgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pcard { background: #fff; border-radius: 22px; box-shadow: 0 1px 0 rgba(12, 43, 85, .06), 0 10px 30px rgba(16, 52, 104, .06); overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.pcard-img { display: block; aspect-ratio: 4 / 3; padding: 18px 18px 6px; background: radial-gradient(110% 85% at 50% 30%, #fff 0%, #eef3f9 60%, #e3eaf3 100%); }
.pcard-img img { width: 100%; height: 100%; object-fit: contain; transition: transform .35s; }
.pcard:hover .pcard-img img { transform: scale(1.04); }
.pcard-body { padding: 18px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.pcard-no { font-size: 14px; color: var(--blue); letter-spacing: .1em; }
.pcard h3 { margin-top: 2px; font-size: 22px; letter-spacing: .05em; }
.pcard-tag { font-size: 14px; color: var(--soft); }
.pcard-kpis { margin: 16px 0 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pcard-kpis span { font-size: 13px; color: var(--blue); }
.pcard-kpis b { font-size: 24px; color: var(--blue-d); }
.pcard-kpis i { display: block; font-style: normal; font-size: 13px; color: var(--muted); }
.pcard-actions { margin-top: auto; display: flex; gap: 10px; }
.pcard-actions .btn { flex: 1; height: 40px; padding: 0 12px; font-size: 14px; }

/* ---------- 3D showroom ---------- */
.showroom { padding: 96px 0; background: linear-gradient(180deg, #0c2b55 0%, #0a2349 100%); color: #fff; }
.showroom .sec-head h2 { color: #fff; }
.showroom .sec-head p { color: #a9c3e2; }
.showroom .eyebrow { color: #7cc4ff; }
.stage-wrap { position: relative; border-radius: 26px; overflow: hidden; background: radial-gradient(70% 60% at 50% 62%, #ffffff 0%, #eef3f9 55%, #d7e3f0 100%); box-shadow: 0 30px 80px rgba(0, 0, 0, .35); }
.stage { position: relative; height: min(68vh, 640px); min-height: 380px; touch-action: none; cursor: grab; }
.stage:active { cursor: grabbing; }
.stage canvas { display: block; width: 100% !important; height: 100% !important; }
.stage-loading { position: absolute; inset: 0; display: grid; place-content: center; gap: 12px; text-align: center; color: var(--muted); font-size: 14px; letter-spacing: .1em; background: rgba(244, 248, 252, .55); z-index: 2; }
.stage-loading[hidden] { display: none; }
.stage-loading .bar { width: 220px; height: 4px; border-radius: 2px; background: #d6e2ef; overflow: hidden; }
.stage-loading .bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #3aa6f2, var(--blue-d)); transition: width .2s; }
.stage-fallback { display: none; position: absolute; inset: 0; place-content: center; text-align: center; padding: 24px; color: var(--muted); }
.stage.failed .stage-fallback { display: grid; }
.stage.failed .stage-loading, .stage.failed canvas { display: none; }
.stage-info { position: absolute; left: 22px; top: 20px; z-index: 3; display: flex; align-items: center; gap: 12px; padding: 10px 18px 10px 12px; border-radius: 16px; background: rgba(255, 255, 255, .86); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); color: var(--ink); box-shadow: 0 8px 24px rgba(16, 52, 104, .1); }
.stage-info .num { width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; color: #fff; font-size: 16px; background: linear-gradient(135deg, #3aa6f2, var(--blue-d)); }
.stage-info b { font-size: 18px; letter-spacing: .05em; }
.stage-info em { font-style: normal; font-size: 13px; color: var(--soft); }
.stage-info a { font-size: 13px; color: var(--blue); margin-left: 4px; }
.stage-tools { position: absolute; right: 18px; top: 18px; z-index: 3; display: flex; gap: 8px; }
.stage-tools button { height: 40px; padding: 0 14px; border-radius: 12px; display: inline-flex; align-items: center; gap: 6px; background: rgba(255, 255, 255, .86); color: var(--navy); font-size: 18px; box-shadow: 0 6px 18px rgba(16, 52, 104, .1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.stage-tools button span { font-size: 13px; letter-spacing: .06em; }
.stage-tools button.on { background: var(--blue); color: #fff; }
.stage-hint { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 3; font-size: 13px; letter-spacing: .14em; color: var(--muted); background: rgba(255, 255, 255, .7); padding: 6px 14px; border-radius: 14px; pointer-events: none; }
.stage-wrap:fullscreen { border-radius: 0; }
.stage-wrap:fullscreen .stage { height: 100vh; }
.stage-wrap.pseudo-full { position: fixed; inset: 0; z-index: 80; border-radius: 0; }
.stage-wrap.pseudo-full .stage { height: 100vh; }
.mtabs { margin-top: 22px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.mtab { display: flex; flex-direction: column; gap: 6px; padding: 10px; border-radius: 16px; background: rgba(255, 255, 255, .06); box-shadow: inset 0 0 0 1px rgba(160, 205, 255, .18); color: #cfe0f5; text-align: left; transition: background .2s, box-shadow .2s; }
.mtab img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; border-radius: 10px; background: radial-gradient(100% 80% at 50% 35%, #fff, #e4ecf5); }
.mtab span { font-size: 14px; letter-spacing: .04em; }
.mtab span i { font-style: normal; margin-right: 6px; color: #7cc4ff; }
.mtab:hover { background: rgba(255, 255, 255, .12); }
.mtab.on { background: rgba(94, 198, 255, .16); box-shadow: inset 0 0 0 2px #5ec6ff; color: #fff; }

/* ---------- product details ---------- */
.pdetail { padding: 96px 0; }
.pdetail.alt { background: #f5f8fc; }
.pd-head { display: flex; align-items: flex-end; gap: 22px; margin-bottom: 34px; }
.pd-no { font-size: clamp(64px, 9vw, 112px); line-height: .82; color: transparent; -webkit-text-stroke: 2px #b9cde4; }
.pill { display: inline-flex; align-items: center; gap: 10px; height: 34px; padding: 0 16px 0 5px; border-radius: 17px; background: #fff; box-shadow: 0 6px 16px rgba(16, 60, 120, .08); font-size: 14px; font-weight: 600; color: var(--blue-d); letter-spacing: .06em; }
.pill i { font-style: normal; height: 24px; padding: 0 10px; border-radius: 12px; background: var(--blue); color: #fff; font-size: 12px; line-height: 24px; letter-spacing: .12em; }
.pd-head h2 { margin-top: 12px; font-size: clamp(32px, 4.4vw, 50px); line-height: 1.1; letter-spacing: .05em; font-weight: 800; }
.pd-en { margin-top: 8px; font-size: 14px; letter-spacing: .26em; color: var(--blue); font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif; font-weight: 700; }
.pd-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 44px; align-items: start; }
.gallery { min-width: 0; }
.g-main { position: relative; display: block; width: 100%; aspect-ratio: 4 / 3; border-radius: 24px; overflow: hidden; background: radial-gradient(90% 80% at 50% 40%, #ffffff 0%, #eef3f9 60%, #e1e9f2 100%); box-shadow: inset 0 0 0 1px rgba(12, 43, 85, .05); cursor: zoom-in; }
.g-main img { width: 100%; height: 100%; object-fit: contain; padding: 18px; }
.g-zoom { position: absolute; right: 14px; bottom: 14px; width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: rgba(255, 255, 255, .85); color: var(--navy); font-size: 18px; }
.g-cap { margin-top: 14px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.g-cap b { font-size: 18px; letter-spacing: .04em; }
.g-cap span { font-size: 15px; color: var(--muted); }
.g-thumbs { margin-top: 14px; display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.g-thumb { flex: 0 0 96px; height: 72px; border-radius: 12px; overflow: hidden; background: #fff; box-shadow: inset 0 0 0 1px var(--line); opacity: .75; transition: opacity .2s, box-shadow .2s; }
.g-thumb img { width: 100%; height: 100%; object-fit: cover; }
.g-thumb.on, .g-thumb:hover { opacity: 1; box-shadow: inset 0 0 0 2px var(--blue); }
.pd-lead { font-size: 18px; line-height: 1.85; color: var(--body); padding-left: 16px; border-left: 4px solid var(--blue); }
.kpis { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; }
.kpi { padding: 16px 0; border-top: 1px solid #cfd9e5; }
.kpi .v { display: flex; align-items: baseline; gap: 6px; color: var(--blue-d); }
.kpi .v b { font-size: clamp(30px, 3.4vw, 42px); line-height: 1; }
.kpi .v small { font-size: 15px; color: var(--blue); }
.kpi .k { margin-top: 6px; font-size: 14px; color: var(--muted); letter-spacing: .05em; }
.specs { margin-top: 18px; border-top: 3px solid var(--blue); background: #fff; border-radius: 0 0 16px 16px; box-shadow: inset 0 0 0 1px var(--line); }
.pdetail.alt .specs { background: #fff; }
.specs > div { display: grid; grid-template-columns: 112px 1fr; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--line); }
.specs > div:last-child { border-bottom: 0; }
.specs dt { color: var(--soft); font-size: 14px; letter-spacing: .08em; }
.specs dd { font-size: 15.5px; font-weight: 600; }
.pd-actions { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px; }
.hl-grid { margin-top: 44px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.hl { min-width: 0; }
.hl-img { display: block; width: 100%; aspect-ratio: 16 / 10; border-radius: 18px; overflow: hidden; background: radial-gradient(120% 90% at 50% 20%, #fff 0%, #eef3f8 55%, #e2e9f1 100%); cursor: zoom-in; }
.hl-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.hl-img:hover img { transform: scale(1.05); }
.hl figcaption { margin-top: 12px; }
.hl figcaption b { display: block; font-size: 18px; letter-spacing: .04em; }
.hl figcaption span { display: block; margin-top: 4px; font-size: 14.5px; color: var(--muted); }

/* ---------- process ---------- */
.process { padding: 96px 0; background: linear-gradient(180deg, #fff, #f3f7fc); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; counter-reset: s; }
.steps li { position: relative; padding: 24px 18px 22px; border-radius: var(--radius); background: #fff; box-shadow: 0 1px 0 rgba(12, 43, 85, .05), 0 10px 26px rgba(16, 52, 104, .06); }
.steps li::after { content: ""; position: absolute; right: -11px; top: 38px; width: 8px; height: 8px; border-top: 2px solid #9fc2e6; border-right: 2px solid #9fc2e6; transform: rotate(45deg); }
.steps li:last-child::after { display: none; }
.steps i { font-style: normal; font-size: 28px; color: var(--blue); line-height: 1; }
.steps b { display: block; margin-top: 12px; font-size: 18px; letter-spacing: .06em; }
.steps span { display: block; margin-top: 6px; font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ---------- contact ---------- */
.contact { padding: 100px 0; color: #fff; background: linear-gradient(160deg, #0d3a7a 0%, #0a2a57 46%, var(--navy-d) 100%); overflow: hidden; }
.contact-art { position: absolute; inset: 0; width: 100%; height: 100%; }
.contact-in { position: relative; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: center; }
.contact .kicker { color: #7cc4ff; }
.contact h2 { margin-top: 18px; font-size: clamp(40px, 5.6vw, 72px); line-height: 1.12; font-weight: 800; letter-spacing: .05em; }
.contact h2 em { font-style: normal; color: #6cc4ff; }
.contact-p { margin-top: 20px; font-size: 17px; color: #b8cfe9; }
.chips { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; }
.chips a { height: 40px; padding: 0 18px; border-radius: 20px; border: 1px solid rgba(160, 205, 255, .35); background: rgba(255, 255, 255, .06); font-size: 15px; line-height: 38px; color: #dbeaff; transition: background .2s; }
.chips a:hover { background: rgba(255, 255, 255, .14); }
.chips a i { font-style: normal; margin-right: 8px; color: #7cc4ff; font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif; font-weight: 700; }
.contact-card { display: grid; grid-template-columns: auto 1fr; background: #fff; color: var(--ink); border-radius: 26px; overflow: hidden; box-shadow: 0 30px 80px rgba(0, 0, 0, .3); }
.qr-pair { display: grid; grid-template-columns: 1fr 1fr; }
.qr-big { background: var(--paper); padding: 24px 22px; display: grid; justify-items: center; align-content: center; gap: 6px; text-align: center; }
.qr-big.dy { background: #e9eff6; }
.qr-big img { width: 148px; height: 148px; border-radius: 12px; background: #fff; padding: 8px; }
.qr-big.dy img { background: none; padding: 0; border-radius: 0; }
.qr-big b { margin-top: 6px; font-size: 17px; letter-spacing: .08em; color: var(--navy); white-space: nowrap; }
.qr-big span { font-size: 12.5px; color: var(--muted); }
.crows { padding: 32px 34px; display: grid; align-content: center; }
.crows h3 { font-size: 21px; white-space: nowrap; letter-spacing: .04em; line-height: 1.4; }
.crows small { font-size: 11px; letter-spacing: .3em; color: var(--soft); }
#contactRows { margin-top: 16px; }
.crow { display: grid; grid-template-columns: 64px 1fr; align-items: baseline; padding: 11px 0; border-top: 1px solid var(--line); font-size: 15.5px; }
.crow .tel-big { font-size: 26px; color: var(--blue-d); white-space: nowrap; }
.crow span { color: var(--soft); letter-spacing: .16em; }
.crows::after { content: "扫码添加微信或关注抖音，获取设备方案与报价。"; margin-top: 14px; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- footer ---------- */
.foot { background: var(--navy-d); color: #7f9cc0; font-size: 13px; letter-spacing: .08em; }
.foot a { color: #bcd3ee; }
.foot-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding-top: 22px; padding-bottom: calc(22px + env(safe-area-inset-bottom)); }

/* ---------- floating button / modals ---------- */
.fab { display: none; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .25s, transform .25s; position: fixed; z-index: 60; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom)); height: 46px; padding: 0 20px; border-radius: 23px; background: linear-gradient(135deg, #2b8ef0, var(--blue-d)); color: #fff; font-weight: 600; letter-spacing: .06em; box-shadow: 0 12px 28px rgba(11, 79, 163, .4); }
.lightbox, .modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: rgba(7, 20, 42, .86); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); padding: 24px; }
.lightbox[hidden], .modal[hidden] { display: none; }
.lightbox figure { max-width: min(1200px, 92vw); display: grid; gap: 14px; }
.lightbox img { max-height: 78vh; width: auto; margin: 0 auto; border-radius: 18px; background: radial-gradient(90% 80% at 50% 40%, #fff, #e6edf5); padding: 16px; }
.lb-cap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; color: #dbe7f5; }
.lb-cap b { font-size: 18px; color: #fff; }
.lb-cap span { font-size: 15px; }
.lb-cap i { margin-left: auto; font-style: normal; color: #7f9cc0; }
.lb-close, .lb-prev, .lb-next { position: absolute; width: 48px; height: 48px; border-radius: 24px; background: rgba(255, 255, 255, .12); color: #fff; font-size: 30px; line-height: 1; display: grid; place-items: center; }
.lb-close { right: 20px; top: 20px; }
.lb-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255, 255, 255, .22); }
.modal-card { position: relative; width: min(340px, 100%); padding: 34px 28px 28px; border-radius: 26px; background: #fff; text-align: center; display: grid; justify-items: center; gap: 6px; }
.modal-card img { width: 220px; height: 220px; margin-bottom: 8px; }
.modal-card b { font-size: 20px; letter-spacing: .12em; color: var(--navy); }
.modal-card span { font-size: 14px; color: var(--muted); }
.modal-card em { font-style: normal; font-size: 13px; color: var(--blue); }
.modal-card .call { margin-top: 14px; width: 100%; }
.qr-close { position: absolute; right: 12px; top: 10px; width: 36px; height: 36px; border-radius: 18px; font-size: 24px; color: var(--soft); }

/* ---------- brand film ---------- */
.film { padding: 96px 0 88px; background: linear-gradient(180deg, #fff 0%, #f3f7fc 100%); }
.film-box { position: relative; border-radius: 26px; overflow: hidden; background: #0c2b55; box-shadow: 0 30px 80px rgba(12, 43, 85, .22); aspect-ratio: 16 / 9; }
.film-box video { display: block; width: 100%; height: 100%; object-fit: cover; background: #0c2b55; }
.film-play { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(7, 26, 56, .18); transition: opacity .25s; }
.film-play i { width: 88px; height: 88px; border-radius: 50%; background: rgba(255, 255, 255, .92); box-shadow: 0 12px 30px rgba(0, 0, 0, .25); position: relative; }
.film-play i::after { content: ""; position: absolute; left: 36px; top: 28px; border-left: 26px solid var(--blue-d); border-top: 16px solid transparent; border-bottom: 16px solid transparent; }
.film-box.playing .film-play { opacity: 0; pointer-events: none; }
.film-full { position: absolute; right: 16px; bottom: 16px; height: 38px; padding: 0 14px; border-radius: 12px; display: inline-flex; align-items: center; gap: 6px; background: rgba(255, 255, 255, .86); color: var(--navy); font-size: 17px; box-shadow: 0 6px 18px rgba(0, 0, 0, .15); }
.film-full span { font-size: 13px; letter-spacing: .06em; }
.film-sound { position: absolute; left: 16px; bottom: 16px; height: 38px; padding: 0 14px 0 11px; border-radius: 19px; display: inline-flex; align-items: center; gap: 7px; background: rgba(255, 255, 255, .9); color: var(--navy); font-size: 13px; letter-spacing: .06em; box-shadow: 0 6px 18px rgba(0, 0, 0, .15); }
.film-sound svg { width: 18px; height: 18px; }
.film-sound .ic-on { display: none; }
.film-sound.on { background: var(--blue); color: #fff; }
.film-sound.on .ic-on { display: block; }
.film-sound.on .ic-off { display: none; }
.film-box.playing .film-sound:not(.on) { animation: soundHint 2.4s ease-in-out 1.2s 3; }
@keyframes soundHint { 0%, 100% { box-shadow: 0 6px 18px rgba(0, 0, 0, .15); } 50% { box-shadow: 0 0 0 7px rgba(94, 198, 255, .35), 0 6px 18px rgba(0, 0, 0, .15); } }
.film-steps { margin-top: 22px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.film-steps span { display: flex; align-items: center; justify-content: center; gap: 8px; height: 44px; border-radius: 22px; background: #fff; box-shadow: inset 0 0 0 1px var(--line); font-size: 15px; color: var(--body); letter-spacing: .08em; }
.film-steps i { font-style: normal; color: var(--blue); }
@media (max-width: 600px) {
  .film { padding: 64px 0 56px; }
  .film-box { border-radius: 16px; margin: 0 -4px; }
  .film-play i { width: 64px; height: 64px; }
  .film-play i::after { left: 26px; top: 20px; border-left-width: 20px; border-top-width: 12px; border-bottom-width: 12px; }
  .film-full { right: 10px; bottom: 10px; height: 34px; padding: 0 10px; }
  .film-full span { display: none; }
  .film-sound { left: 10px; bottom: 10px; height: 34px; padding: 0 12px 0 9px; font-size: 12px; }
  .film-steps { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .film-steps span { height: 38px; font-size: 14px; }
}

/* ---------- run demo under each gallery ---------- */
.run { margin-top: 24px; }
.run-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; }
.run-head b { font-size: 18px; letter-spacing: .06em; }
.run-head span { font-size: 13px; color: var(--soft); letter-spacing: .04em; }
.run-box { position: relative; margin-top: 10px; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden; background: radial-gradient(90% 80% at 50% 40%, #ffffff 0%, #eef3f9 60%, #e1e9f2 100%); box-shadow: inset 0 0 0 1px rgba(12, 43, 85, .05); }
.run-box video { display: block; width: 100%; height: 100%; object-fit: cover; }
.run-badge { position: absolute; right: 12px; bottom: 12px; height: 26px; padding: 0 10px; border-radius: 13px; display: inline-flex; align-items: center; gap: 6px; background: rgba(255, 255, 255, .88); color: var(--navy); font-size: 12px; letter-spacing: .08em; opacity: 0; transition: opacity .3s; }
.run-badge i { width: 7px; height: 7px; border-radius: 50%; background: #2fae5c; box-shadow: 0 0 0 3px rgba(47, 174, 92, .2); }
.run-box.on .run-badge { opacity: 1; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-links { gap: 18px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps li:nth-child(3)::after { display: none; }
  .mtabs { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  :root { --nav-h: 60px; }
  .nav-links { position: absolute; left: 0; right: 0; top: var(--nav-h); flex-direction: column; gap: 0; padding: 8px 24px 18px; background: rgba(255, 255, 255, .97); box-shadow: 0 12px 24px rgba(12, 43, 85, .1); display: none; }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-links a::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav.open .nav-toggle i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav-toggle i:nth-child(2) { opacity: 0; }
  .nav.open .nav-toggle i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { padding-top: calc(var(--nav-h) + 28px); }
  .hero-in { grid-template-columns: 1fr; gap: 24px; }
  .qr-card { justify-self: start; }
  .hero-pano { padding: 0 8px; margin-top: 18px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats > div:nth-child(3) { border-left: 0; }
  .stats > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .about-grid, .pd-grid, .contact-in { grid-template-columns: 1fr; gap: 36px; }
  .pgrid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .hl-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .fab { display: block; }
  .fab.show { opacity: 1; transform: none; pointer-events: auto; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .about, .products, .showroom, .pdetail, .process { padding: 64px 0; }
  .contact { padding: 72px 0; }
  .sec-head { margin-bottom: 30px; }
  .sec-head p { font-size: 15.5px; }
  .hero-sub { font-size: 16px; }
  .hero-cta .btn-lg { flex: 1; height: 48px; padding: 0 16px; }
  .qr-card { width: 100%; padding: 12px 16px 12px 12px; gap: 14px; }
  .qr-card img { width: 108px; height: 108px; }
  .qr-card .tel strong { font-size: 21px; }
  .stats > div { padding: 16px 16px; }
  .stats b { font-size: 30px; }
  .about-p { font-size: 16px; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { grid-template-columns: 52px 1fr; align-items: center; padding: 18px; }
  .pgrid { grid-template-columns: 1fr; }
  .pcard { flex-direction: row; }
  .pcard-img { flex: 0 0 42%; aspect-ratio: auto; padding: 10px; }
  .pcard-body { padding: 14px 14px 14px 6px; }
  .pcard h3 { font-size: 18px; }
  .pcard-kpis { margin: 8px 0 10px; grid-template-columns: 1fr; gap: 4px; }
  .pcard-kpis b { font-size: 18px; }
  .pcard-kpis i { display: inline; margin-left: 6px; }
  .pcard-actions { flex-direction: column; gap: 6px; }
  .pcard-actions .btn { height: 34px; flex: none; }
  .stage { height: 62vh; min-height: 340px; }
  .stage-info { left: 10px; top: 10px; padding: 7px 12px 7px 8px; gap: 8px; }
  .stage-info .num { width: 30px; height: 30px; font-size: 13px; }
  .stage-info b { font-size: 15px; }
  .stage-info em, .stage-info a { display: none; }
  .stage-tools { right: 10px; top: 10px; gap: 6px; }
  .stage-tools button { height: 38px; }
  .stage-tools button { width: 38px; padding: 0; justify-content: center; }
  .stage-tools button span { display: none; }
  .stage-hint { left: 12px; transform: none; bottom: 16px; font-size: 12px; }
  .mtabs { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .mtab { padding: 6px; }
  .mtab span { font-size: 12.5px; }
  .pd-head { gap: 14px; margin-bottom: 24px; }
  .pd-lead { font-size: 16px; }
  .specs > div { grid-template-columns: 96px 1fr; padding: 11px 14px; }
  .hl-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps li::after { display: none; }
  .contact-card { grid-template-columns: 1fr; }
  .crows h3 { white-space: normal; }
  .qr-big img { width: 132px; height: 132px; }
  .crows { padding: 24px; }
  .lb-prev, .lb-next { top: auto; bottom: 20px; transform: none; }
  .lightbox img { max-height: 66vh; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }