:root {
  --brand: #2980FE;
  --brand-deep: #1767D6;
  --brand-soft: #EAF3FF;
  --ice: #F5F8FD;
  --gray: #F7F9FC;
  --white: #FFFFFF;
  --ink: #172033;
  --text: #465266;
  --muted: #718096;
  --line: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 50px rgba(29, 77, 138, .10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; overflow-x: hidden; color: var(--ink); background: var(--white); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", Arial, sans-serif; line-height: 1.75; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 2000; padding: 10px 16px; border-radius: 10px; color: #fff; background: var(--brand-deep); }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(220,230,242,.82); background: rgba(255,255,255,.94); backdrop-filter: blur(16px); }
.header-inner { width: min(var(--container), calc(100% - 36px)); min-height: 76px; margin: 0 auto; display: flex; align-items: center; gap: 24px; }
.brand { flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 44px; }
.brand img { width: 164px; max-height: 44px; object-fit: contain; }
.desktop-nav { flex: 1 1 auto; display: flex; align-items: stretch; justify-content: center; min-width: 0; }
.nav-link { position: relative; display: flex; align-items: center; min-height: 76px; padding: 0 13px; color: #33415c; font-size: 15px; font-weight: 700; white-space: nowrap; }
.nav-link::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--brand); transform: scaleX(0); transition: transform .2s ease; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.is-active, .nav-group.is-active > .nav-link { color: var(--brand-deep); }
.nav-link:hover::after, .nav-link:focus-visible::after, .nav-link.is-active::after, .nav-group.is-active > .nav-link::after { transform: scaleX(1); }
.nav-group { position: relative; }
.mega-menu { position: absolute; left: 50%; top: calc(100% - 1px); width: 690px; padding: 18px; display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 10px; border: 1px solid var(--line); border-radius: 0 0 22px 22px; background: #fff; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translate(-50%, 10px); transition: .2s ease; }
.mega-menu-right { left: auto; right: -90px; transform: translate(0, 10px); }
.nav-group:hover .mega-menu, .nav-group:focus-within .mega-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.nav-group:hover .mega-menu-right, .nav-group:focus-within .mega-menu-right { transform: translate(0, 0); }
.mega-menu a, .mega-intro { min-height: 84px; padding: 14px; border-radius: 14px; }
.mega-menu a { display: flex; flex-direction: column; justify-content: center; border: 1px solid transparent; transition: .18s ease; }
.mega-menu a:hover, .mega-menu a:focus-visible { border-color: #cfe1ff; background: var(--brand-soft); }
.mega-menu strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 15px; }
.mega-menu span { color: var(--muted); font-size: 13px; line-height: 1.45; }
.mega-intro { grid-row: span 2; color: #fff; background: linear-gradient(145deg, var(--brand), var(--brand-deep)); }
.mega-intro strong { color: #fff; font-size: 21px; }
.mega-intro span { color: rgba(255,255,255,.84); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid transparent; border-radius: 14px; font-weight: 800; line-height: 1; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-deep)); box-shadow: 0 12px 24px rgba(41,128,254,.22); }
.button-secondary { color: var(--brand-deep); border-color: #bfd8ff; background: #fff; }
.button-ghost { color: var(--ink); background: var(--brand-soft); }
.button-small { min-height: 42px; padding: 0 16px; border-radius: 12px; font-size: 14px; }
.menu-trigger, .menu-close { border: 0; background: transparent; cursor: pointer; }
.menu-trigger { min-width: 48px; min-height: 44px; padding: 0 12px; display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 12px; font-weight: 800; }
.menu-trigger i, .menu-trigger i::before, .menu-trigger i::after { display: block; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
.menu-trigger i { position: relative; }
.menu-trigger i::before, .menu-trigger i::after { content: ""; position: absolute; left: 0; }
.menu-trigger i::before { top: -6px; }
.menu-trigger i::after { top: 6px; }
.menu-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(9,27,54,.45); opacity: 0; transition: opacity .22s ease; }
.menu-overlay.is-visible { opacity: 1; }
.mobile-menu { position: fixed; top: 0; right: 0; z-index: 1100; width: min(430px, 92vw); height: 100dvh; display: flex; flex-direction: column; background: #fff; box-shadow: -18px 0 60px rgba(13,40,81,.22); transform: translateX(105%); transition: transform .25s ease; }
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu-head { min-height: 76px; padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.menu-close { width: 48px; height: 48px; border-radius: 14px; background: var(--gray); font-size: 32px; line-height: 1; }
.mobile-menu-body { flex: 1; overflow-y: auto; padding: 16px 18px 28px; }
.mobile-home, .mobile-menu summary, .mobile-menu details a { min-height: 48px; display: flex; align-items: center; }
.mobile-home { padding: 0 4px; border-bottom: 1px solid var(--line); font-weight: 800; }
.mobile-menu details { border-bottom: 1px solid var(--line); }
.mobile-menu summary { cursor: pointer; font-weight: 800; list-style: none; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu summary::after { content: "+"; margin-left: auto; color: var(--brand); font-size: 24px; }
.mobile-menu details[open] summary::after { content: "−"; }
.mobile-menu details div { padding: 0 0 12px 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.mobile-menu details a { min-height: 44px; padding: 0 10px; border-radius: 10px; color: var(--text); background: var(--gray); font-size: 14px; }
.mobile-menu-foot { padding: 14px 18px max(18px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.mobile-menu-foot .button { width: 100%; }
main { overflow: clip; }
.container { width: min(var(--container), calc(100% - 36px)); margin-inline: auto; }
.section { padding: 92px 0; }
.section-tight { padding: 68px 0; }
.section-soft { background: var(--ice); }
.section-blue { background: linear-gradient(135deg, #f0f6ff, #e6f1ff); }
.section-dark { color: #fff; background: linear-gradient(135deg, #10233F, #164b88); }
.eyebrow { display: inline-flex; align-items: center; min-height: 30px; padding: 0 12px; border-radius: 999px; color: var(--brand-deep); background: var(--brand-soft); font-size: 13px; font-weight: 800; letter-spacing: .04em; }
.section-dark .eyebrow { color: #fff; background: rgba(255,255,255,.13); }
.display-title, .section-title, .inner-title { margin: 14px 0 18px; letter-spacing: -.035em; line-height: 1.12; }
.display-title { max-width: 720px; font-size: clamp(42px, 6vw, 72px); }
.section-title { max-width: 760px; font-size: clamp(32px, 4vw, 48px); }
.inner-title { max-width: 820px; font-size: clamp(38px, 5vw, 60px); }
.lead { max-width: 760px; margin: 0; color: var(--text); font-size: clamp(17px, 2vw, 20px); }
.section-dark .lead, .section-dark p { color: rgba(255,255,255,.78); }
.section-head { margin-bottom: 42px; }
.section-head.center { text-align: center; }
.section-head.center .section-title, .section-head.center .lead { margin-left: auto; margin-right: auto; }
.hero { position: relative; padding: 82px 0 70px; background: radial-gradient(circle at 88% 20%, rgba(41,128,254,.16), transparent 30%), linear-gradient(180deg, #fff, #f4f8ff); }
.hero::before { content: ""; position: absolute; left: -100px; top: 90px; width: 240px; height: 240px; border: 1px solid rgba(41,128,254,.16); border-radius: 50%; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: 56px; }
.hero-copy p { max-width: 700px; color: var(--text); font-size: 18px; }
.hero-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-tags { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span { padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; color: #40516c; background: rgba(255,255,255,.78); font-size: 14px; font-weight: 700; }
.hero-visual { position: relative; min-height: 540px; display: flex; align-items: center; justify-content: center; }
.hero-device { position: relative; z-index: 2; max-height: 520px; object-fit: contain; filter: drop-shadow(0 30px 36px rgba(34,81,145,.18)); }
.float-note { position: absolute; z-index: 3; width: 190px; padding: 13px 14px; border: 1px solid rgba(207,225,255,.9); border-radius: 16px; background: rgba(255,255,255,.9); box-shadow: var(--shadow); backdrop-filter: blur(10px); }
.float-note strong { display: block; color: var(--ink); font-size: 14px; }
.float-note span { color: var(--muted); font-size: 12px; }
.float-note.one { left: -18px; top: 80px; }
.float-note.two { right: -10px; top: 190px; }
.float-note.three { left: 10px; bottom: 70px; }
.capability-bar { position: relative; z-index: 5; margin-top: -22px; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow); overflow: hidden; }
.capability-item { padding: 26px; }
.capability-item + .capability-item { border-left: 1px solid var(--line); }
.capability-item strong { display: block; margin-bottom: 8px; font-size: 18px; }
.capability-item p { margin: 0; color: var(--muted); font-size: 14px; }
.category-mosaic { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.category-card { position: relative; min-height: 220px; padding: 26px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 22px; background: #fff; overflow: hidden; transition: transform .2s ease, box-shadow .2s ease; }
.category-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.category-card::after { content: ""; position: absolute; right: -32px; bottom: -38px; width: 120px; height: 120px; border-radius: 50%; background: var(--brand-soft); }
.category-card.wide { grid-column: span 2; }
.category-card.blue { color: #fff; border-color: transparent; background: linear-gradient(145deg, var(--brand), var(--brand-deep)); }
.category-card.blue::after { background: rgba(255,255,255,.12); }
.category-number { color: var(--brand); font-weight: 900; }
.category-card.blue .category-number { color: #fff; }
.category-card h3 { position: relative; z-index: 1; margin: 26px 0 10px; font-size: 24px; }
.category-card p { position: relative; z-index: 1; margin: 0 0 20px; color: var(--text); }
.category-card.blue p { color: rgba(255,255,255,.82); }
.text-link { position: relative; z-index: 1; margin-top: auto; color: var(--brand-deep); font-weight: 800; }
.category-card.blue .text-link { color: #fff; }
.split-feature { display: grid; grid-template-columns: .9fr 1.1fr; gap: 54px; align-items: center; padding: 48px; border-radius: var(--radius-lg); background: linear-gradient(135deg, #ddebff, #f5f9ff); }
.media-panel { min-height: 470px; display: flex; align-items: center; justify-content: center; border-radius: 24px; background: rgba(255,255,255,.72); }
.media-panel img { max-height: 430px; object-fit: contain; }
.check-list { padding: 0; margin: 24px 0; list-style: none; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; color: var(--text); }
.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(--brand); font-size: 12px; font-weight: 900; }
.section-dark .check-list li { color: rgba(255,255,255,.86); }
.section-dark .check-list li::before { color: var(--footer); background: #fff; }
.dual-offset { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
.topic-panel { padding: 38px; border: 1px solid var(--line); border-radius: 26px; background: #fff; box-shadow: 0 14px 34px rgba(29,77,138,.06); }
.topic-panel.offset { margin-top: 64px; background: var(--brand-soft); }
.topic-panel h3 { margin: 12px 0; font-size: 30px; }
.topic-panel p { color: var(--text); }
.topic-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.visual-duo { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; align-items: stretch; }
.visual-card { min-height: 430px; padding: 38px; border-radius: 28px; background: var(--ice); }
.visual-card.compact { min-height: 350px; margin-top: 80px; background: #fff; border: 1px solid var(--line); }
.visual-card img { max-height: 210px; margin: 0 auto 22px; object-fit: contain; }
.visual-card h3 { font-size: 30px; margin: 10px 0; }
.safety-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; align-items: center; }
.safety-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.safety-list div { padding: 18px; border: 1px solid rgba(255,255,255,.14); border-radius: 16px; background: rgba(255,255,255,.07); }
.safety-note { padding: 22px; border-left: 4px solid #8dc1ff; border-radius: 0 16px 16px 0; color: #fff; background: rgba(255,255,255,.08); }
.hardware-layout, .swap-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.image-stage { min-height: 450px; padding: 30px; display: flex; align-items: center; justify-content: center; border-radius: 28px; background: linear-gradient(145deg, var(--brand-soft), #fff); }
.image-stage img { max-height: 390px; object-fit: contain; }
.swap-checks { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.swap-checks span { min-height: 54px; padding: 12px 16px; display: flex; align-items: center; border: 1px solid var(--line); border-radius: 14px; background: #fff; font-weight: 700; }
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.step { position: relative; min-height: 265px; padding: 22px 18px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.step::after { content: ""; position: absolute; right: -13px; top: 36px; width: 14px; height: 2px; background: var(--brand); }
.step:last-child::after { display: none; }
.step-number { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; color: #fff; background: var(--brand); font-weight: 900; }
.step h3 { margin: 20px 0 10px; font-size: 19px; }
.step p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
.eco-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.eco-panel { padding: 38px; border-radius: 26px; background: #fff; box-shadow: var(--shadow); }
.eco-panel:nth-child(2) { color: #fff; background: linear-gradient(145deg, var(--brand), var(--brand-deep)); }
.eco-panel:nth-child(2) p, .eco-panel:nth-child(2) li { color: rgba(255,255,255,.82); }
.timeline { position: relative; display: grid; gap: 0; }
.timeline::before { content: ""; position: absolute; left: 145px; top: 8px; bottom: 8px; width: 1px; background: var(--line); }
.timeline-item { display: grid; grid-template-columns: 120px 1fr; gap: 50px; padding: 20px 0; }
.timeline-date { color: var(--brand-deep); font-weight: 900; }
.timeline-content { position: relative; padding: 22px 24px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.timeline-content::before { content: ""; position: absolute; left: -31px; top: 28px; width: 11px; height: 11px; border: 4px solid #fff; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
.timeline-content h3 { margin: 0 0 6px; font-size: 20px; }
.timeline-content p { margin: 0; color: var(--text); }
.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quote { min-height: 210px; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.quote::before { content: "“"; color: var(--brand); font-size: 44px; font-weight: 900; line-height: 1; }
.quote p { margin: 8px 0 18px; color: var(--text); }
.quote span { color: var(--muted); font-size: 13px; font-weight: 800; }
.faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 18px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; min-height: 70px; padding: 18px 22px; display: flex; align-items: center; gap: 20px; justify-content: space-between; border: 0; text-align: left; background: transparent; cursor: pointer; font-weight: 850; }
.faq-question::after { content: "+"; color: var(--brand); font-size: 28px; }
.faq-question[aria-expanded="true"]::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--text); }
.faq-item.is-open .faq-answer { display: block; }
.cta { padding: 50px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; border-radius: 28px; color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-deep)); box-shadow: 0 24px 60px rgba(41,128,254,.23); }
.cta h2 { margin: 0 0 10px; font-size: clamp(30px, 4vw, 46px); }
.cta p { margin: 0; color: rgba(255,255,255,.82); }
.cta .button { color: var(--brand-deep); background: #fff; }
.inner-hero { padding: 78px 0 64px; background: radial-gradient(circle at 85% 20%, rgba(41,128,254,.16), transparent 34%), var(--ice); }
.inner-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: center; }
.inner-hero p { max-width: 750px; color: var(--text); font-size: 18px; }
.inner-visual { min-height: 360px; padding: 24px; display: flex; align-items: center; justify-content: center; border: 1px solid #d5e5fb; border-radius: 26px; background: rgba(255,255,255,.75); }
.inner-visual img { max-height: 330px; object-fit: contain; }
.content-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 28px; }
.prose-card, .list-card, .info-card { padding: 32px; border: 1px solid var(--line); border-radius: 22px; background: #fff; }
.prose-card h2, .list-card h2 { margin-top: 0; font-size: 30px; }
.prose-card p, .list-card p, .info-card p { color: var(--text); }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.info-card h3 { margin: 0 0 10px; font-size: 21px; }
.info-card .tag { display: inline-block; margin-bottom: 18px; color: var(--brand-deep); font-size: 13px; font-weight: 900; }
.notice { padding: 28px 30px; border: 1px solid #bad7ff; border-radius: 20px; background: var(--brand-soft); }
.notice strong { display: block; margin-bottom: 8px; color: var(--brand-deep); font-size: 20px; }
.process-list { counter-reset: process; display: grid; gap: 14px; }
.process-item { counter-increment: process; padding: 22px 24px 22px 78px; position: relative; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.process-item::before { content: counter(process); position: absolute; left: 22px; top: 22px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; color: #fff; background: var(--brand); font-weight: 900; }
.process-item h3 { margin: 0 0 6px; }
.process-item p { margin: 0; color: var(--text); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
table { width: 100%; min-width: 680px; border-collapse: collapse; }
th, td { padding: 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--ink); background: var(--ice); }
td { color: var(--text); }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.policy h2 { margin-top: 44px; }
.site-footer { padding: 64px 0 22px; color: #fff; background: var(--footer); }
.footer-grid { width: min(var(--container), calc(100% - 36px)); margin: 0 auto; display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 44px; }
.footer-brand p { max-width: 390px; color: rgba(255,255,255,.64); }
.footer-grid > div:not(.footer-brand) { display: flex; flex-direction: column; gap: 10px; }
.footer-grid strong { margin-bottom: 6px; }
.footer-grid a { color: rgba(255,255,255,.67); font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { width: min(var(--container), calc(100% - 36px)); margin: 42px auto 0; padding-top: 20px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.56); font-size: 13px; }
.footer-bottom div { display: flex; gap: 18px; }
@media (max-width: 1120px) {
  .desktop-nav { display: none; }
  .header-inner { justify-content: space-between; }
  .header-actions .menu-trigger span { display: none; }
  .hero-grid, .inner-hero-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step::after { display: none; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .section { padding: 72px 0; }
  .hero-grid, .inner-hero-grid, .split-feature, .hardware-layout, .swap-layout, .safety-layout, .content-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 58px; }
  .hero-visual { min-height: 470px; }
  .hero-device { max-height: 440px; }
  .capability-grid { grid-template-columns: 1fr 1fr; }
  .capability-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .capability-item:nth-child(4) { border-top: 1px solid var(--line); }
  .category-mosaic { grid-template-columns: repeat(2, 1fr); }
  .category-card.wide { grid-column: span 1; }
  .dual-offset, .visual-duo, .eco-grid { grid-template-columns: 1fr; }
  .topic-panel.offset, .visual-card.compact { margin-top: 0; }
  .testimonials { grid-template-columns: 1fr 1fr; }
  .cta { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / 4; }
}
@media (max-width: 620px) {
  .header-inner { width: min(100% - 24px, var(--container)); min-height: 68px; gap: 10px; }
  .brand img { width: 132px; }
  .header-actions { gap: 8px; }
  .header-actions .button-small { min-height: 42px; padding: 0 13px; font-size: 13px; }
  .menu-trigger { width: 44px; min-width: 44px; padding: 0; justify-content: center; }
  .container { width: min(100% - 28px, var(--container)); }
  .section { padding: 60px 0; }
  .display-title { font-size: 42px; }
  .hero-copy p, .inner-hero p { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-visual { min-height: 410px; }
  .hero-device { max-height: 360px; }
  .float-note { width: 150px; padding: 10px; }
  .float-note.one { left: 0; top: 44px; }
  .float-note.two { right: 0; top: 160px; }
  .float-note.three { left: 10px; bottom: 32px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-item + .capability-item { border-left: 0; border-top: 1px solid var(--line); }
  .category-mosaic, .safety-list, .swap-checks, .steps, .testimonials, .card-grid, .contact-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 205px; }
  .split-feature, .topic-panel, .visual-card, .eco-panel, .prose-card, .list-card, .info-card { padding: 26px; }
  .media-panel, .image-stage { min-height: 340px; }
  .timeline::before { left: 9px; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; padding-left: 30px; }
  .timeline-content::before { left: -28px; }
  .cta { padding: 32px 24px; }
  .mobile-menu details div { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-brand, .footer-grid > div:last-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}