:root {
  --blue: #2980FE;
  --blue-deep: #1767D6;
  --blue-soft: #EAF3FF;
  --blue-mist: #F5F8FD;
  --gray-soft: #F7F9FC;
  --white: #FFFFFF;
  --ink: #172033;
  --text: #465266;
  --muted: #718096;
  --line: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 50px rgba(23, 103, 214, .10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100% - 40px));
}

* { 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", sans-serif; line-height: 1.72; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.94); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(220,230,242,.85); }
.nav-shell { width: var(--container); min-height: 76px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { object-fit: contain; }
.desktop-nav { display: flex; align-items: center; justify-content: center; min-width: 0; gap: 4px; white-space: nowrap; }
.nav-link { display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px; color: #33405a; font-size: 15px; font-weight: 700; border-radius: 12px; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.is-active { color: var(--blue-deep); background: var(--blue-soft); outline: none; }
.nav-item { position: relative; }
.mega-menu { position: absolute; top: calc(100% + 14px); left: 50%; width: 720px; transform: translate(-50%, 8px); display: grid; grid-template-columns: 1.25fr repeat(2, 1fr); gap: 12px; padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); opacity: 0; visibility: hidden; pointer-events: none; transition: .18s ease; white-space: normal; }
.mega-menu.compact { width: 640px; }
.nav-item:hover .mega-menu, .nav-item:focus-within .mega-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }
.mega-menu::before { content: ""; position: absolute; left: 0; right: 0; top: -16px; height: 18px; }
.mega-menu > a, .mega-intro { min-height: 92px; padding: 14px; border-radius: 16px; }
.mega-menu > a { border: 1px solid transparent; }
.mega-menu > a:hover, .mega-menu > a:focus-visible { background: var(--blue-mist); border-color: var(--line); outline: none; }
.mega-menu strong { display: block; color: var(--ink); font-size: 15px; }
.mega-menu span { display: block; margin-top: 5px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.mega-intro { grid-row: span 2; color: #fff; background: linear-gradient(145deg, var(--blue), var(--blue-deep)); }
.mega-intro strong { color: #fff; font-size: 20px; }
.mega-intro span { color: rgba(255,255,255,.85); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.download-btn, .primary-btn, .secondary-btn, .text-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; border-radius: 14px; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.download-btn, .primary-btn { padding: 0 22px; color: #fff; background: linear-gradient(135deg, var(--blue), var(--blue-deep)); box-shadow: 0 10px 24px rgba(41,128,254,.24); }
.download-btn:hover, .primary-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(41,128,254,.30); }
.download-btn.small { min-height: 42px; padding: 0 17px; font-size: 14px; }
.secondary-btn { padding: 0 20px; color: var(--blue-deep); background: #fff; border: 1px solid var(--line); }
.secondary-btn:hover { background: var(--blue-soft); }
.text-btn { min-height: auto; padding: 0; color: var(--blue-deep); border-radius: 0; }
.text-btn::after { content: "→"; margin-left: 8px; transition: transform .18s ease; }
.text-btn:hover::after { transform: translateX(4px); }
.menu-toggle { width: 44px; height: 44px; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.menu-toggle span { width: 18px; height: 2px; background: var(--ink); border-radius: 5px; }

.menu-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(16,35,63,.44); }
.mobile-menu { position: fixed; top: 0; right: 0; bottom: 0; z-index: 1100; width: min(92vw, 430px); display: flex; flex-direction: column; background: #fff; box-shadow: -20px 0 60px rgba(16,35,63,.18); transform: translateX(104%); transition: transform .24s 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: 44px; height: 44px; border: 0; border-radius: 12px; background: var(--blue-mist); color: var(--ink); font-size: 28px; }
.mobile-menu-body { flex: 1; overflow-y: auto; padding: 16px 18px 30px; }
.mobile-home, .mobile-group-toggle { width: 100%; min-height: 52px; display: flex; align-items: center; justify-content: space-between; padding: 0 14px; border: 0; border-radius: 13px; background: #fff; color: var(--ink); font-weight: 800; text-align: left; }
.mobile-home:hover, .mobile-group-toggle:hover { background: var(--blue-mist); }
.mobile-nav-group { border-bottom: 1px solid #edf2f8; }
.mobile-group-panel { display: none; padding: 2px 12px 12px 22px; }
.mobile-group-panel.is-open { display: grid; }
.mobile-group-panel a { min-height: 44px; display: flex; align-items: center; color: var(--text); }
.mobile-menu-foot { padding: 16px 18px calc(16px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.mobile-menu-foot .download-btn { width: 100%; }

main { min-height: 60vh; }
.container { width: var(--container); margin: 0 auto; }
.section { padding: 96px 0; }
.section-sm { padding: 68px 0; }
.bg-mist { background: var(--blue-mist); }
.bg-gray { background: var(--gray-soft); }
.bg-blue { background: linear-gradient(145deg, #1164d5, #1f78eb 58%, #3e90ff); color: #fff; }
.eyebrow { display: inline-flex; align-items: center; min-height: 30px; padding: 0 12px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-deep); font-size: 13px; font-weight: 900; letter-spacing: .06em; }
.bg-blue .eyebrow { background: rgba(255,255,255,.16); color: #fff; }
h1, h2, h3 { margin: 0; color: var(--ink); line-height: 1.22; letter-spacing: -.02em; }
h1 { font-size: clamp(38px, 5vw, 68px); }
h2 { font-size: clamp(30px, 3.3vw, 46px); }
h3 { font-size: 21px; }
p { margin: 0; }
.lead { margin-top: 20px; font-size: clamp(18px, 2vw, 22px); color: #35425a; }
.section-copy { margin-top: 18px; color: var(--text); font-size: 16px; }
.section-head { max-width: 760px; margin-bottom: 42px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .eyebrow { margin-bottom: 14px; }
.section-head p { margin-top: 16px; color: var(--muted); }
.btn-row { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.tag-row { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.tag { display: inline-flex; align-items: center; min-height: 36px; padding: 0 13px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.82); color: #33405a; font-size: 14px; font-weight: 700; }

.hero { position: relative; overflow: hidden; padding: 84px 0 72px; background: radial-gradient(circle at 82% 18%, rgba(41,128,254,.18), transparent 33%), linear-gradient(180deg, #fbfdff, #f4f8ff); }
.hero::before { content: ""; position: absolute; width: 520px; height: 520px; left: -300px; top: 80px; border-radius: 50%; border: 80px solid rgba(41,128,254,.05); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 54px; }
.hero-copy { padding: 20px 0; }
.hero-copy .eyebrow { margin-bottom: 18px; }
.hero-copy p { max-width: 700px; }
.hero-visual { position: relative; min-height: 520px; display: grid; place-items: center; }
.hero-product { width: min(100%, 470px); max-height: 510px; object-fit: contain; filter: drop-shadow(0 32px 42px rgba(23,103,214,.20)); }
.float-note { position: absolute; max-width: 190px; padding: 13px 16px; border: 1px solid rgba(220,230,242,.9); border-radius: 16px; background: rgba(255,255,255,.92); box-shadow: var(--shadow); color: var(--ink); font-weight: 800; }
.float-note span { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; font-weight: 600; }
.float-note.one { left: 0; top: 14%; }
.float-note.two { right: 0; top: 43%; }
.float-note.three { left: 10%; bottom: 8%; }

.capability-bar { position: relative; margin-top: -26px; z-index: 3; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); overflow: hidden; }
.capability-item { padding: 26px 24px; border-right: 1px solid var(--line); }
.capability-item:last-child { border-right: 0; }
.capability-item strong { display: block; color: var(--ink); font-size: 18px; }
.capability-item p { margin-top: 8px; color: var(--muted); font-size: 14px; }

.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-flow: dense; gap: 18px; }
.category-card { min-height: 220px; padding: 26px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 22px; background: #fff; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.category-card:hover { transform: translateY(-4px); border-color: #b9d5fa; box-shadow: var(--shadow); }
.category-card.featured { grid-column: span 2; min-height: 250px; background: linear-gradient(145deg, #eaf3ff, #ffffff); }
.category-card.wide { grid-column: span 2; }
.category-card h3 { font-size: 24px; }
.category-card p { margin: 12px 0 20px; color: var(--muted); }
.category-index { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 24px; border-radius: 13px; background: var(--blue-soft); color: var(--blue-deep); font-weight: 900; }

.feature-panel { display: grid; grid-template-columns: .88fr 1.12fr; gap: 46px; align-items: center; padding: 46px; border-radius: var(--radius-lg); background: linear-gradient(140deg, #e8f2ff, #f8fbff); }
.feature-panel.reverse { grid-template-columns: 1.12fr .88fr; }
.feature-image-wrap { min-height: 420px; display: grid; place-items: center; padding: 24px; border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.feature-image-wrap img { max-height: 400px; object-fit: contain; }
.check-list { margin: 24px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 32px; color: #33405a; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue-deep); font-size: 13px; font-weight: 900; }
.bg-blue .check-list li { color: rgba(255,255,255,.9); }
.bg-blue .check-list li::before { background: rgba(255,255,255,.16); color: #fff; }

.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.topic-block { padding: 36px; border: 1px solid var(--line); border-radius: 26px; background: #fff; }
.topic-block.offset { transform: translateY(28px); }
.topic-block p { margin-top: 16px; }
.topic-block ul { margin: 22px 0 0; padding-left: 20px; }
.topic-block li { margin: 8px 0; }
.topic-block.emphasis { background: linear-gradient(150deg, #f6faff, #e8f2ff); }
.topic-block.dark { background: var(--footer); color: #fff; border-color: transparent; }
.topic-block.dark h2, .topic-block.dark h3 { color: #fff; }
.topic-block.dark p, .topic-block.dark li { color: rgba(255,255,255,.78); }

.media-split { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.media-card { min-height: 460px; padding: 38px; border-radius: 28px; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.media-card.large { min-height: 560px; }
.media-card img { max-height: 290px; margin: 28px auto 0; object-fit: contain; }
.media-card p { margin-top: 16px; }

.security-shell { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: center; }
.security-copy h2, .security-copy h3 { color: #fff; }
.security-copy p { color: rgba(255,255,255,.82); }
.security-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.security-point { padding: 20px; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; background: rgba(255,255,255,.09); }
.security-point strong { display: block; color: #fff; }
.security-point span { display: block; margin-top: 7px; color: rgba(255,255,255,.72); font-size: 14px; }

.swap-layout { display: grid; grid-template-columns: .88fr 1.12fr; gap: 34px; align-items: stretch; }
.swap-visual { padding: 38px; border-radius: 26px; background: linear-gradient(145deg, #edf5ff, #fff); border: 1px solid var(--line); }
.swap-visual img { max-height: 340px; margin: 24px auto 0; object-fit: contain; }
.audit-list { padding: 38px; border-radius: 26px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.audit-list ol { margin: 24px 0 0; padding: 0; list-style: none; counter-reset: audit; display: grid; gap: 13px; }
.audit-list li { counter-increment: audit; display: grid; grid-template-columns: 38px 1fr; align-items: center; gap: 12px; }
.audit-list li::before { content: counter(audit); width: 36px; height: 36px; display: grid; place-items: center; border-radius: 11px; background: var(--blue-soft); color: var(--blue-deep); font-weight: 900; }

.path-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; }
.path-step { position: relative; padding: 0 16px; }
.path-step:not(:last-child)::after { content: ""; position: absolute; top: 24px; left: 64px; right: -10px; height: 1px; background: #bcd7fa; }
.step-number { position: relative; z-index: 2; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 16px; background: var(--blue); color: #fff; font-weight: 900; box-shadow: 0 9px 22px rgba(41,128,254,.25); }
.path-step h3 { margin-top: 20px; font-size: 18px; }
.path-step p { margin-top: 10px; color: var(--muted); font-size: 14px; }
.path-step a { display: inline-flex; margin-top: 12px; color: var(--blue-deep); font-weight: 800; font-size: 14px; }

.timeline { display: grid; gap: 0; border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 130px 1fr auto; gap: 24px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--line); }
.timeline-date { color: var(--blue-deep); font-size: 14px; font-weight: 900; }
.timeline-item h3 { font-size: 19px; }
.timeline-item p { margin-top: 6px; color: var(--muted); }

.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-card { min-height: 230px; padding: 28px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.review-card:nth-child(2), .review-card:nth-child(5) { background: var(--blue-mist); }
.review-card .quote { color: var(--blue); font-size: 34px; line-height: 1; }
.review-card p { margin-top: 14px; color: #35425a; }
.review-card span { display: block; margin-top: 18px; color: var(--muted); font-size: 13px; font-weight: 700; }

.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 17px; background: #fff; overflow: hidden; }
.faq-toggle { width: 100%; min-height: 64px; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border: 0; background: #fff; color: var(--ink); text-align: left; font-weight: 850; }
.faq-toggle:hover { background: var(--blue-mist); }
.faq-mark { color: var(--blue); font-size: 24px; }
.faq-panel { padding: 0 20px 20px; color: var(--text); }

.cta-shell { padding: 56px; border-radius: 30px; text-align: center; background: radial-gradient(circle at 50% 0%, rgba(255,255,255,.20), transparent 45%), linear-gradient(145deg, var(--blue), var(--blue-deep)); color: #fff; }
.cta-shell h2 { color: #fff; }
.cta-shell p { max-width: 720px; margin: 18px auto 0; color: rgba(255,255,255,.84); }
.cta-shell .download-btn { margin-top: 28px; color: var(--blue-deep); background: #fff; box-shadow: none; }

.page-hero { padding: 78px 0 66px; background: radial-gradient(circle at 85% 18%, rgba(41,128,254,.20), transparent 34%), linear-gradient(180deg, #fbfdff, #f2f7ff); }
.page-hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; align-items: center; gap: 46px; }
.page-hero-copy .eyebrow { margin-bottom: 16px; }
.page-hero-copy p { margin-top: 20px; max-width: 720px; font-size: 18px; }
.page-hero-art { min-height: 350px; display: grid; place-items: center; padding: 30px; border-radius: 30px; background: rgba(255,255,255,.72); border: 1px solid var(--line); }
.page-hero-art img { max-height: 350px; object-fit: contain; }
.abstract-art { position: relative; width: 100%; min-height: 300px; overflow: hidden; }
.abstract-art::before, .abstract-art::after { content: ""; position: absolute; border-radius: 50%; }
.abstract-art::before { width: 240px; height: 240px; left: 12%; top: 10%; background: linear-gradient(145deg, #5ba0ff, #1767D6); box-shadow: 0 28px 60px rgba(23,103,214,.24); }
.abstract-art::after { width: 170px; height: 170px; right: 10%; bottom: 6%; border: 30px solid #dfeeff; }
.abstract-chip { position: absolute; z-index: 2; padding: 14px 18px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.92); box-shadow: var(--shadow); color: var(--ink); font-weight: 850; }
.abstract-chip.a { left: 5%; bottom: 18%; }
.abstract-chip.b { right: 4%; top: 18%; }
.abstract-chip.c { left: 40%; top: 42%; }

.content-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: 34px; align-items: start; }
.prose { padding: 38px; border: 1px solid var(--line); border-radius: 26px; background: #fff; }
.prose h2 { margin-top: 44px; font-size: 30px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 30px; }
.prose p { margin-top: 16px; }
.prose ul, .prose ol { margin: 18px 0 0; padding-left: 22px; }
.prose li { margin: 8px 0; }
.side-panel { position: sticky; top: 104px; display: grid; gap: 18px; }
.side-card { padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: var(--blue-mist); }
.side-card h2, .side-card h3 { font-size: 22px; }
.side-card p { margin-top: 12px; }
.side-card .download-btn { width: 100%; margin-top: 20px; }
.link-list { margin-top: 16px; display: grid; gap: 9px; }
.link-list a { color: var(--blue-deep); font-weight: 800; }

.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.info-card { padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: #fff; }
.info-card h3 { font-size: 21px; }
.info-card p { margin-top: 12px; color: var(--muted); }
.info-card .text-btn { margin-top: 18px; }
.steps-list { display: grid; gap: 16px; counter-reset: steps; }
.steps-list article { counter-increment: steps; display: grid; grid-template-columns: 56px 1fr; gap: 18px; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.steps-list article::before { content: counter(steps); width: 52px; height: 52px; display: grid; place-items: center; border-radius: 16px; background: var(--blue-soft); color: var(--blue-deep); font-weight: 900; }
.steps-list p { margin-top: 8px; }
.notice { padding: 24px 26px; border-left: 4px solid var(--blue); border-radius: 0 18px 18px 0; background: var(--blue-mist); }
.notice strong { color: var(--ink); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; }
table { width: 100%; border-collapse: collapse; min-width: 660px; background: #fff; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--ink); background: var(--blue-mist); }
tr:last-child td { border-bottom: 0; }

.site-footer { padding: 70px 0 22px; background: var(--footer); color: rgba(255,255,255,.74); }
.footer-grid { width: var(--container); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 44px; }
.footer-brand p { max-width: 390px; margin: 18px 0 22px; }
.site-footer h2 { margin-bottom: 16px; color: #fff; font-size: 16px; }
.site-footer a:not(.download-btn):not(.brand) { display: block; min-height: 34px; color: rgba(255,255,255,.72); }
.site-footer a:hover { color: #fff; }
.footer-bottom { width: var(--container); margin: 48px auto 0; padding-top: 22px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.14); font-size: 14px; }
.footer-bottom nav { display: flex; gap: 20px; }
.footer-bottom nav a { min-height: auto !important; }

@media (min-width: 1041px) {
  .menu-toggle, .mobile-menu, .menu-overlay { display: none; }
}

@media (max-width: 1120px) {
  .nav-shell { gap: 14px; }
  .desktop-nav { gap: 0; }
  .nav-link { padding: 0 7px; font-size: 14px; }
}

@media (max-width: 1040px) {
  :root { --container: min(100% - 32px, 900px); }
  .desktop-nav { display: none; }
  .nav-shell { grid-template-columns: 1fr auto; min-height: 70px; }
  .nav-actions { justify-self: end; }
  .hero-grid, .page-hero-grid, .feature-panel, .feature-panel.reverse, .security-shell, .swap-layout, .media-split { grid-template-columns: 1fr; }
  .hero-visual { min-height: 480px; }
  .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); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .category-card.featured, .category-card.wide { grid-column: span 1; }
  .path-grid { grid-template-columns: repeat(3, 1fr); gap: 34px 0; }
  .path-step:nth-child(3n)::after { display: none; }
  .review-grid, .info-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .side-panel { position: static; grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / 4; }
}

@media (max-width: 700px) {
  :root { --container: calc(100% - 28px); }
  .section { padding: 72px 0; }
  .section-sm { padding: 54px 0; }
  .nav-shell { gap: 8px; }
  .brand img { width: 128px; }
  .nav-actions { gap: 7px; }
  .download-btn.small { min-height: 42px; padding: 0 13px; font-size: 13px; }
  h1 { font-size: clamp(36px, 12vw, 50px); }
  h2 { font-size: clamp(28px, 9vw, 38px); }
  .hero { padding: 58px 0 54px; }
  .hero-grid { gap: 20px; }
  .hero-visual { min-height: 430px; }
  .hero-product { max-height: 390px; }
  .float-note { max-width: 155px; padding: 11px 12px; font-size: 13px; }
  .float-note.one { left: 0; top: 9%; }
  .float-note.two { right: 0; top: 45%; }
  .float-note.three { left: 3%; bottom: 6%; }
  .capability-bar { margin-top: 0; padding-top: 16px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-item:last-child { border-bottom: 0; }
  .category-grid, .split-grid, .review-grid, .info-grid, .side-panel { grid-template-columns: 1fr; }
  .topic-block.offset { transform: none; }
  .feature-panel { padding: 24px; gap: 28px; }
  .feature-image-wrap { min-height: 300px; }
  .media-card, .media-card.large { min-height: auto; padding: 26px; }
  .security-grid { grid-template-columns: 1fr; }
  .path-grid { grid-template-columns: 1fr; gap: 20px; }
  .path-step { display: grid; grid-template-columns: 52px 1fr; column-gap: 16px; }
  .path-step::after { display: none !important; }
  .path-step h3 { margin-top: 0; }
  .path-step p, .path-step a { grid-column: 2; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
  .cta-shell { padding: 40px 22px; }
  .page-hero { padding: 58px 0 50px; }
  .page-hero-art { min-height: 290px; }
  .prose { padding: 26px 22px; }
  .steps-list article { grid-template-columns: 46px 1fr; padding: 20px; }
  .steps-list article::before { width: 44px; height: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px 22px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .footer-bottom nav { flex-wrap: wrap; }
}

@media (max-width: 400px) {
  .brand img { width: 116px; }
  .download-btn.small { padding: 0 10px; }
  .menu-toggle { width: 42px; height: 42px; }
  .btn-row > a { width: 100%; }
}