:root {
  --blue: #2980FE;
  --blue-dark: #1767D6;
  --blue-soft: #EAF3FF;
  --blue-faint: #F5F8FD;
  --gray-soft: #F7F9FC;
  --white: #FFFFFF;
  --ink: #172033;
  --text: #465266;
  --muted: #718096;
  --line: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 50px rgba(31, 92, 158, .10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: var(--white); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif; line-height: 1.72; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; top: -80px; left: 20px; z-index: 9999; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.section { padding: 92px 0; }
.section-tight { padding: 62px 0; }
.section-blue { background: var(--blue-faint); }
.section-soft { background: linear-gradient(180deg, #fff 0%, var(--gray-soft) 100%); }
.section-heading { max-width: 760px; margin-bottom: 36px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px; color: var(--blue-dark); font-weight: 750; letter-spacing: .04em; }
.eyebrow::before { content: ""; width: 30px; height: 2px; background: var(--blue); }
h1, h2, h3 { color: var(--ink); line-height: 1.2; margin-top: 0; }
h1 { font-size: clamp(2.45rem, 5vw, 4.75rem); letter-spacing: -.045em; margin-bottom: 24px; }
h2 { font-size: clamp(2rem, 3vw, 3.25rem); letter-spacing: -.035em; margin-bottom: 18px; }
h3 { font-size: 1.22rem; margin-bottom: 10px; }
p { margin-top: 0; }
.lead { font-size: 1.13rem; color: var(--text); }
.text-link { color: var(--blue-dark); font-weight: 750; display: inline-flex; align-items: center; gap: 8px; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.button-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.download-btn, .primary-btn, .secondary-btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border-radius: 14px; padding: 12px 22px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.download-btn, .primary-btn { background: var(--blue); color: #fff; box-shadow: 0 12px 28px rgba(41, 128, 254, .22); }
.download-btn:hover, .primary-btn:hover { background: var(--blue-dark); transform: translateY(-2px); }
.secondary-btn { border: 1px solid var(--line); color: var(--ink); background: #fff; }
.secondary-btn:hover { border-color: var(--blue); color: var(--blue-dark); transform: translateY(-2px); }

.site-header { position: sticky; top: 0; z-index: 900; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(220,230,242,.86); backdrop-filter: blur(16px); }
.header-inner { width: min(calc(100% - 34px), 1320px); min-height: 76px; margin: auto; display: flex; align-items: center; gap: 26px; }
.brand { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand img { max-height: 44px; width: auto; object-fit: contain; }
.desktop-nav { flex: 1; display: flex; justify-content: center; align-items: stretch; min-width: 0; gap: 2px; white-space: nowrap; }
.nav-link, .nav-trigger { min-height: 76px; display: inline-flex; align-items: center; border: 0; background: transparent; padding: 0 12px; font-weight: 720; color: #33415A; cursor: pointer; position: relative; }
.nav-link::after, .nav-trigger::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--blue); transform: scaleX(0); transition: transform .2s ease; }
.nav-link:hover, .nav-trigger:hover, .nav-link.is-active, .nav-group.is-active .nav-trigger { color: var(--blue-dark); }
.nav-link:hover::after, .nav-link.is-active::after, .nav-group.is-active .nav-trigger::after { transform: scaleX(1); }
.nav-group { position: relative; }
.mega-menu { position: absolute; top: calc(100% + 1px); left: 0; width: 560px; padding: 18px; display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: 0 0 22px 22px; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px); transition: .2s ease; white-space: normal; }
.mega-menu-right { left: auto; right: 0; }
.nav-group:hover .mega-menu, .nav-group:focus-within .mega-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-menu a, .mega-intro { padding: 14px; border-radius: 14px; }
.mega-menu a:hover, .mega-menu a:focus { background: var(--blue-faint); outline: none; }
.mega-menu b, .mega-intro strong { display: block; color: var(--ink); margin-bottom: 4px; }
.mega-menu span { display: block; color: var(--muted); font-size: .86rem; line-height: 1.45; }
.mega-intro { grid-row: span 2; background: linear-gradient(145deg, var(--blue-soft), #fff); border: 1px solid #d8e9ff; }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.header-actions .download-btn { min-height: 44px; padding: 10px 18px; }
.menu-toggle { width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 13px; background: #fff; display: none; align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; }
.menu-overlay { position: fixed; inset: 0; z-index: 950; background: rgba(10,28,52,.42); opacity: 0; transition: opacity .22s ease; }
.menu-overlay.is-visible { opacity: 1; }
.mobile-menu { position: fixed; z-index: 960; top: 0; right: 0; width: min(92vw, 430px); height: 100dvh; background: #fff; transform: translateX(104%); transition: transform .25s ease; box-shadow: -24px 0 60px rgba(16,35,63,.2); display: flex; flex-direction: column; }
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu-head { min-height: 74px; padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.menu-close { width: 46px; height: 46px; border: 0; border-radius: 50%; background: var(--blue-faint); font-size: 28px; cursor: pointer; }
.mobile-menu-scroll { overflow-y: auto; padding: 16px 18px 34px; }
.mobile-home, .mobile-group-toggle { width: 100%; min-height: 52px; display: flex; align-items: center; justify-content: space-between; padding: 12px 4px; border: 0; border-bottom: 1px solid var(--line); background: #fff; color: var(--ink); font-weight: 800; cursor: pointer; }
.mobile-group-links { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 12px 0 16px; }
.mobile-group-links a { min-height: 44px; display: flex; align-items: center; padding: 10px 12px; border-radius: 12px; background: var(--blue-faint); color: #33415A; }
.mobile-menu .download-btn { width: 100%; margin-top: 22px; }

.hero { padding: 78px 0 62px; background: radial-gradient(circle at 82% 12%, rgba(41,128,254,.16), transparent 28%), linear-gradient(180deg, #fff 0%, #f8fbff 100%); }
.hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 56px; align-items: center; }
.hero-copy { max-width: 680px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-tags span { padding: 8px 12px; border: 1px solid #cfe2ff; background: rgba(255,255,255,.76); color: var(--blue-dark); border-radius: 999px; font-size: .9rem; font-weight: 720; }
.hero-visual { position: relative; min-height: 540px; display: grid; place-items: center; }
.hero-visual::before { content: ""; position: absolute; width: 86%; aspect-ratio: 1; border-radius: 46% 54% 63% 37%; background: linear-gradient(145deg, rgba(41,128,254,.16), rgba(234,243,255,.4)); filter: blur(1px); }
.hero-visual img { position: relative; z-index: 2; max-height: 520px; object-fit: contain; }
.float-note { position: absolute; z-index: 3; max-width: 190px; padding: 14px 16px; border: 1px solid rgba(220,230,242,.9); background: rgba(255,255,255,.9); border-radius: 16px; box-shadow: 0 14px 36px rgba(33,86,147,.12); font-size: .9rem; font-weight: 750; color: var(--ink); backdrop-filter: blur(10px); }
.float-note::before { content: "✓"; color: var(--blue); margin-right: 8px; }
.float-one { left: 0; top: 18%; }
.float-two { right: -2%; top: 43%; }
.float-three { left: 8%; bottom: 9%; }

.capability-strip { padding-bottom: 66px; background: #f8fbff; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); overflow: hidden; }
.capability-item { padding: 24px; border-right: 1px solid var(--line); }
.capability-item:last-child { border-right: 0; }
.capability-item b { display: block; color: var(--ink); font-size: 1.03rem; margin-bottom: 6px; }
.capability-item p { margin: 0; font-size: .94rem; }

.category-row { display: grid; gap: 16px; margin-bottom: 16px; }
.category-row:last-child { margin-bottom: 0; }
.category-row-one { grid-template-columns: repeat(5, 1fr); }
.category-row-one .category-item:first-child { grid-column: span 2; }
.category-row-two { grid-template-columns: repeat(3, 1fr); }
.category-row-three { grid-template-columns: repeat(5, 1fr); }
.category-row-three .category-item:first-child { grid-column: span 1; }
.category-row-three .category-item:nth-child(2), .category-row-three .category-item:nth-child(3) { grid-column: span 2; }
.category-item { min-height: 220px; padding: 26px; border-radius: 22px; border: 1px solid var(--line); background: #fff; display: flex; flex-direction: column; justify-content: space-between; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.category-item:hover { transform: translateY(-4px); border-color: #bcd8ff; box-shadow: var(--shadow); }
.category-item.featured { background: linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #fff; border-color: transparent; }
.category-item.featured h3, .category-item.featured .text-link { color: #fff; }
.category-item:nth-child(3n) { background: var(--blue-faint); }
.category-number { color: var(--blue); font-weight: 850; font-size: .85rem; letter-spacing: .08em; }
.category-item.featured .category-number { color: rgba(255,255,255,.72); }

.feature-panel { border-radius: var(--radius-lg); background: var(--blue-soft); padding: 48px; overflow: hidden; }
.feature-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 56px; }
.feature-image { min-height: 460px; border-radius: 24px; background: #fff; display: grid; place-items: center; padding: 28px; box-shadow: 0 16px 44px rgba(41,128,254,.10); }
.feature-image img { max-height: 410px; object-fit: contain; }
.check-list { display: grid; gap: 11px; padding: 0; margin: 24px 0 0; list-style: none; }
.check-list li { position: relative; padding-left: 34px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 24px; height: 24px; border-radius: 50%; background: #fff; color: var(--blue); display: grid; place-items: center; font-weight: 900; }

.offset-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 24px; align-items: start; }
.offset-panel { padding: 38px; border-radius: var(--radius-lg); border: 1px solid var(--line); background: #fff; }
.offset-panel:nth-child(2) { margin-top: 72px; background: var(--blue-faint); }
.definition-list { margin: 24px 0 0; display: grid; gap: 14px; }
.definition-list div { padding: 16px 0; border-top: 1px solid var(--line); }
.definition-list dt { color: var(--ink); font-weight: 800; }
.definition-list dd { margin: 4px 0 0; }

.dual-feature { display: grid; grid-template-columns: 1.16fr .84fr; gap: 22px; align-items: stretch; }
.dual-card { border-radius: var(--radius-lg); padding: 42px; border: 1px solid var(--line); background: #fff; overflow: hidden; }
.dual-card.primary { background: linear-gradient(145deg, #eef6ff, #fff); }
.dual-card.secondary { background: var(--gray-soft); margin-top: 62px; }
.dual-card img { max-height: 260px; margin: 24px auto 0; object-fit: contain; }

.security-band { background: linear-gradient(135deg, var(--footer), #164a88); color: #dceaff; }
.security-band h2, .security-band h3 { color: #fff; }
.security-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 54px; align-items: start; }
.security-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.security-point { padding: 20px; border: 1px solid rgba(255,255,255,.15); border-radius: 18px; background: rgba(255,255,255,.06); }
.security-point b { display: block; color: #fff; margin-bottom: 5px; }
.security-alert { margin-top: 26px; padding: 18px 20px; border-left: 4px solid #75b6ff; background: rgba(255,255,255,.08); border-radius: 0 14px 14px 0; }

.media-split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.media-split.reverse .media-visual { order: 2; }
.media-visual { min-height: 430px; padding: 34px; border-radius: var(--radius-lg); background: linear-gradient(145deg, var(--blue-faint), #fff); border: 1px solid var(--line); display: grid; place-items: center; }
.media-visual img { max-height: 370px; object-fit: contain; }

.swap-layout { display: grid; grid-template-columns: .88fr 1.12fr; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; }
.swap-intro { padding: 38px; background: var(--blue-faint); }
.swap-intro img { max-height: 280px; margin: 24px auto 0; object-fit: contain; }
.swap-checks { padding: 42px; }
.swap-checks ol { margin: 22px 0 0; padding: 0; list-style: none; counter-reset: swap; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.swap-checks li { counter-increment: swap; min-height: 72px; display: flex; align-items: center; padding: 14px; border-radius: 14px; background: var(--gray-soft); }
.swap-checks li::before { content: counter(swap); width: 30px; height: 30px; margin-right: 10px; border-radius: 50%; display: grid; place-items: center; background: var(--blue); color: #fff; font-weight: 850; }

.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; position: relative; }
.steps::before { content: ""; position: absolute; left: 7%; right: 7%; top: 29px; height: 2px; background: var(--line); }
.step { position: relative; padding: 0 12px; text-align: center; }
.step-number { position: relative; z-index: 2; width: 58px; height: 58px; margin: 0 auto 18px; display: grid; place-items: center; border-radius: 50%; background: #fff; border: 2px solid var(--blue); color: var(--blue); font-weight: 900; }
.step p { font-size: .91rem; }
.step a { color: var(--blue-dark); font-weight: 750; }

.eco-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.eco-panel { padding: 38px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); }
.eco-panel:nth-child(2) { background: linear-gradient(145deg, var(--blue), var(--blue-dark)); color: #eaf4ff; border: 0; }
.eco-panel:nth-child(2) h2, .eco-panel:nth-child(2) h3, .eco-panel:nth-child(2) .text-link { color: #fff; }

.timeline { display: grid; gap: 0; border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 150px 1fr auto; gap: 24px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); }
.timeline-date { color: var(--blue-dark); font-weight: 800; }
.timeline-item h3 { margin-bottom: 4px; }
.timeline-item p { margin: 0; }

.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review { padding: 28px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.review:nth-child(even) { transform: translateY(22px); background: var(--blue-faint); }
.review-mark { color: var(--blue); font-size: 2.2rem; line-height: 1; }
.review b { color: var(--ink); }

.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 16px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; min-height: 62px; padding: 17px 20px; border: 0; background: #fff; color: var(--ink); text-align: left; display: flex; align-items: center; justify-content: space-between; gap: 16px; font-weight: 800; cursor: pointer; }
.faq-question::after { content: "+"; width: 30px; height: 30px; border-radius: 50%; background: var(--blue-faint); display: grid; place-items: center; color: var(--blue); flex: 0 0 auto; }
.faq-item.is-open .faq-question::after { content: "−"; }
.faq-answer { padding: 0 20px 20px; }
.faq-answer p { margin: 0; }

.download-cta { padding: 56px; text-align: center; border-radius: var(--radius-lg); background: radial-gradient(circle at 80% 20%, rgba(255,255,255,.2), transparent 25%), linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #eaf4ff; }
.download-cta h2 { color: #fff; }
.download-cta p { max-width: 700px; margin-inline: auto; }
.download-cta .download-btn { background: #fff; color: var(--blue-dark); box-shadow: none; }

.page-hero { padding: 82px 0 66px; background: radial-gradient(circle at 88% 10%, rgba(41,128,254,.18), transparent 25%), linear-gradient(180deg, #fff, var(--blue-faint)); }
.page-hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 50px; align-items: center; }
.page-hero h1 { font-size: clamp(2.3rem, 4.7vw, 4.35rem); }
.page-hero-visual { min-height: 330px; border-radius: var(--radius-lg); background: rgba(255,255,255,.7); border: 1px solid var(--line); display: grid; place-items: center; padding: 30px; }
.page-hero-visual img { max-height: 300px; object-fit: contain; }
.page-kicker { display: inline-flex; color: var(--blue-dark); background: #fff; border: 1px solid #cfe2ff; border-radius: 999px; padding: 7px 12px; font-size: .88rem; font-weight: 800; margin-bottom: 18px; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 48px; align-items: start; }
.content-main article { margin-bottom: 54px; }
.content-main article:last-child { margin-bottom: 0; }
.side-panel { position: sticky; top: 104px; padding: 24px; border-radius: 20px; background: var(--blue-faint); border: 1px solid var(--line); }
.side-panel h2 { font-size: 1.22rem; }
.side-links { display: grid; gap: 8px; margin-top: 16px; }
.side-links a { padding: 11px 12px; border-radius: 12px; background: #fff; color: var(--ink); font-weight: 700; }
.side-links a:hover { color: var(--blue-dark); }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.info-item { padding: 24px; border-radius: 18px; border: 1px solid var(--line); background: #fff; }
.info-item:nth-child(2n) { background: var(--blue-faint); }
.notice { padding: 20px 22px; border-radius: 16px; background: #fff8e8; border: 1px solid #f2d99b; color: #5e4a1c; }
.process-list { counter-reset: process; display: grid; gap: 16px; padding: 0; list-style: none; }
.process-list li { counter-increment: process; padding: 22px 22px 22px 72px; position: relative; border-radius: 18px; border: 1px solid var(--line); background: #fff; }
.process-list li::before { content: counter(process); position: absolute; left: 20px; top: 20px; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 850; }
.compare-table { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 16px; border: 1px solid var(--line); }
.compare-table th, .compare-table td { padding: 16px; text-align: left; border-bottom: 1px solid var(--line); }
.compare-table th { background: var(--blue-faint); color: var(--ink); }
.compare-table tr:last-child td { border-bottom: 0; }

.site-footer { background: var(--footer); color: #aebed3; }
.footer-main { width: min(calc(100% - 40px), var(--max)); margin: auto; padding: 62px 0 40px; display: grid; grid-template-columns: 1.5fr repeat(3, .72fr); gap: 46px; }
.footer-logo img { filter: brightness(0) invert(1); }
.footer-brand p { max-width: 440px; margin-top: 20px; }
.footer-column h2 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-column a { display: block; padding: 6px 0; }
.footer-column a:hover, .footer-bottom a:hover { color: #fff; }
.footer-note { border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-note p { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 20px 0; }
.footer-bottom { width: min(calc(100% - 40px), var(--max)); min-height: 76px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-bottom div { display: flex; gap: 18px; }

@media (max-width: 1180px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: flex; }
  .header-inner { min-height: 72px; }
  .header-actions { margin-left: auto; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-item:nth-child(2) { border-right: 0; }
  .capability-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .steps::before { display: none; }
}

@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .hero-grid, .page-hero-grid, .feature-grid, .security-layout, .media-split, .swap-layout, .content-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 440px; }
  .float-two { right: 2%; }
  .feature-panel { padding: 30px; }
  .feature-image { min-height: 360px; }
  .offset-grid, .dual-feature, .eco-grid { grid-template-columns: 1fr 1fr; }
  .offset-panel:nth-child(2), .dual-card.secondary { margin-top: 0; }
  .category-row-one, .category-row-two, .category-row-three { grid-template-columns: 1fr 1fr; }
  .category-row-one .category-item:first-child, .category-row-three .category-item:first-child, .category-row-three .category-item:nth-child(2), .category-row-three .category-item:nth-child(3) { grid-column: auto; }
  .review-grid { grid-template-columns: 1fr 1fr; }
  .review:nth-child(even) { transform: none; }
  .timeline-item { grid-template-columns: 120px 1fr; }
  .timeline-item .text-link { grid-column: 2; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .side-panel { position: static; }
  .footer-main { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { width: calc(100% - 22px); gap: 10px; }
  .brand img { max-width: 132px; }
  .header-actions .download-btn { min-height: 42px; padding: 9px 13px; font-size: .92rem; }
  .menu-toggle { width: 42px; height: 42px; }
  .hero { padding-top: 54px; }
  .hero-grid { gap: 26px; }
  .hero-visual { min-height: 380px; }
  .hero-visual img { max-height: 350px; }
  .float-note { position: relative; inset: auto; display: inline-block; margin: 6px; max-width: none; }
  .hero-visual { display: flex; flex-wrap: wrap; align-content: center; justify-content: center; }
  .hero-visual img { width: 100%; }
  .capability-grid, .category-row-one, .category-row-two, .category-row-three, .offset-grid, .dual-feature, .security-grid, .media-split, .eco-grid, .review-grid, .info-grid { grid-template-columns: 1fr; }
  .capability-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-item:last-child { border-bottom: 0; }
  .category-item { min-height: 190px; }
  .feature-panel, .dual-card, .offset-panel, .eco-panel, .swap-intro, .swap-checks { padding: 26px; }
  .feature-grid { gap: 30px; }
  .feature-image, .media-visual { min-height: 300px; }
  .media-split.reverse .media-visual { order: 0; }
  .swap-checks ol { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; text-align: left; gap: 18px; }
  .step { padding: 0 0 0 74px; text-align: left; min-height: 58px; }
  .step-number { position: absolute; left: 0; top: 0; margin: 0; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
  .timeline-item .text-link { grid-column: 1; }
  .download-cta { padding: 38px 22px; }
  .page-hero { padding: 54px 0 48px; }
  .page-hero-visual { min-height: 250px; }
  .compare-table { display: block; overflow-x: auto; white-space: nowrap; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { padding: 18px 0; flex-direction: column; align-items: flex-start; }
  .footer-bottom div { flex-wrap: wrap; }
}

@media (max-width: 430px) {
  .header-actions .download-btn { padding-inline: 11px; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  h1 { font-size: 2.4rem; }
  .button-row > * { width: 100%; }
}