:root {
    --brand: #2980FE;
    --brand-dark: #1767D6;
    --brand-soft: #EAF3FF;
    --ice: #F5F8FD;
    --light: #F7F9FC;
    --white: #FFFFFF;
    --ink: #172033;
    --text: #465266;
    --muted: #718096;
    --line: #DCE6F2;
    --footer: #10233F;
    --shadow: 0 18px 50px rgba(41, 128, 254, 0.10);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --content: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text);
    background: var(--white);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", "PingFang TC", sans-serif;
    line-height: 1.72;
    overflow-x: hidden;
}
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; }
p, h1, h2, h3, h4 { margin-top: 0; }
main { min-height: 60vh; }

.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 9999;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--ink);
    color: var(--white);
}
.skip-link:focus { top: 12px; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .94);
    border-bottom: 1px solid rgba(220, 230, 242, .8);
    backdrop-filter: blur(18px);
}
.header-shell {
    width: min(var(--content), calc(100% - 40px));
    height: 78px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 22px;
}
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { max-height: 42px; width: auto; object-fit: contain; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: 2px; margin: 0 auto; white-space: nowrap; }
.nav-group { position: relative; }
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    min-height: 46px;
    padding: 0 10px;
    border-radius: 12px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 700;
    transition: .2s ease;
}
.nav-link:hover, .nav-link:focus-visible, .nav-link.is-active { color: var(--brand); background: var(--brand-soft); outline: none; }
.mega-menu {
    position: absolute;
    left: 50%;
    top: calc(100% + 13px);
    width: 610px;
    padding: 18px;
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 18px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--white);
    box-shadow: 0 24px 70px rgba(23, 32, 51, .14);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -8px);
    transition: .2s ease;
}
.nav-group.is-open .mega-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.mega-intro { padding: 18px; border-radius: 16px; background: linear-gradient(145deg, var(--brand-soft), var(--ice)); }
.eyebrow { display: inline-block; color: var(--brand-dark); font-size: 13px; font-weight: 800; letter-spacing: .04em; }
.mega-intro p { margin: 10px 0 0; color: var(--text); font-size: 13px; }
.mega-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.mega-links a { padding: 11px 12px; border-radius: 14px; transition: .2s ease; }
.mega-links a:hover, .mega-links a:focus-visible { background: var(--light); outline: none; }
.mega-links strong { display: block; color: var(--ink); font-size: 14px; }
.mega-links span { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.download-btn, .primary-link, .secondary-link, .text-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    border-radius: 14px;
    font-weight: 800;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn, .primary-link { padding: 0 20px; background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: var(--white); box-shadow: 0 11px 26px rgba(41, 128, 254, .24); }
.download-btn:hover, .primary-link:hover { transform: translateY(-2px); box-shadow: 0 15px 32px rgba(41, 128, 254, .30); }
.secondary-link { padding: 0 20px; color: var(--brand-dark); background: var(--white); border: 1px solid var(--line); }
.secondary-link:hover { border-color: var(--brand); background: var(--brand-soft); }
.text-link { min-height: auto; color: var(--brand-dark); justify-content: flex-start; }
.text-link::after { content: "→"; margin-left: 7px; }
.menu-button, .menu-close { width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 14px; background: var(--white); cursor: pointer; }
.menu-button { display: none; place-items: center; }
.menu-icon, .menu-icon::before, .menu-icon::after { width: 20px; height: 2px; border-radius: 3px; background: var(--ink); display: block; position: relative; }
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }
.menu-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(16, 35, 63, .48); opacity: 0; transition: opacity .22s ease; }
.menu-overlay.is-visible { opacity: 1; }
.mobile-menu { position: fixed; z-index: 1100; top: 0; right: 0; bottom: 0; width: min(430px, 92vw); background: var(--white); box-shadow: -20px 0 70px rgba(16, 35, 63, .2); transform: translateX(105%); transition: transform .26s ease; overflow-y: auto; }
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.menu-close { font-size: 28px; line-height: 1; }
.mobile-menu-body { padding: 16px 20px 32px; }
.mobile-home { display: flex; align-items: center; min-height: 50px; padding: 0 14px; color: var(--ink); font-weight: 800; border-radius: 12px; }
.mobile-home:hover { background: var(--brand-soft); }
.mobile-group { border-bottom: 1px solid var(--line); }
.mobile-group-toggle { width: 100%; min-height: 54px; padding: 0 14px; border: 0; background: transparent; display: flex; align-items: center; justify-content: space-between; color: var(--ink); font-weight: 800; cursor: pointer; }
.mobile-group-panel { padding: 0 6px 12px; }
.mobile-group-panel a { display: block; padding: 11px 12px; border-radius: 12px; }
.mobile-group-panel a:hover { background: var(--light); }
.mobile-group-panel strong { display: block; color: var(--ink); font-size: 14px; }
.mobile-group-panel span { display: block; color: var(--muted); font-size: 12px; }
.mobile-menu-body > .download-btn { width: 100%; margin-top: 20px; }

.container { width: min(var(--content), calc(100% - 40px)); margin: 0 auto; }
.section { padding: 88px 0; }
.section-soft { background: var(--ice); }
.section-blue { background: linear-gradient(145deg, #11315c, #1767D6 68%, #2980FE); color: var(--white); }
.section-blue h2, .section-blue h3, .section-blue p { color: inherit; }
.section-heading { max-width: 720px; margin-bottom: 38px; }
.section-heading.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading h2 { margin-bottom: 14px; color: var(--ink); font-size: clamp(30px, 4vw, 46px); line-height: 1.18; letter-spacing: -.03em; }
.section-heading p { margin-bottom: 0; color: var(--text); font-size: 17px; }
.section-blue .section-heading h2, .section-blue .section-heading p { color: var(--white); }
.kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--brand-dark); font-size: 13px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.kicker::before { content: ""; width: 24px; height: 2px; background: currentColor; }
.section-blue .kicker { color: #cfe4ff; }

.hero { position: relative; overflow: hidden; padding: 92px 0 84px; background: radial-gradient(circle at 82% 20%, rgba(41,128,254,.18), transparent 31%), linear-gradient(180deg, #fafdff, #f4f8ff); }
.hero::before { content: ""; position: absolute; width: 420px; height: 420px; border: 1px solid rgba(41,128,254,.16); border-radius: 50%; right: -120px; top: -170px; }
.hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: 64px; }
.hero-copy h1 { margin-bottom: 22px; color: var(--ink); font-size: clamp(44px, 6vw, 72px); line-height: 1.06; letter-spacing: -.05em; }
.hero-copy .lead { max-width: 680px; color: var(--text); font-size: clamp(18px, 2vw, 21px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.tag { padding: 7px 12px; border: 1px solid rgba(41,128,254,.18); border-radius: 999px; background: rgba(255,255,255,.75); color: var(--brand-dark); font-size: 13px; font-weight: 800; }
.hero-visual { position: relative; min-height: 500px; display: grid; place-items: center; }
.hero-device { position: relative; z-index: 2; max-height: 500px; object-fit: contain; filter: drop-shadow(0 32px 40px rgba(23,103,214,.19)); }
.floating-note { position: absolute; z-index: 3; max-width: 190px; padding: 13px 15px; border: 1px solid rgba(220,230,242,.9); border-radius: 15px; background: rgba(255,255,255,.92); box-shadow: var(--shadow); color: var(--ink); font-size: 13px; font-weight: 800; }
.note-one { top: 13%; left: 0; }.note-two { top: 43%; right: -2%; }.note-three { bottom: 10%; left: 4%; }

.capability-strip { position: relative; z-index: 5; margin-top: -34px; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 24px; background: var(--white); box-shadow: var(--shadow); overflow: hidden; }
.capability-item { padding: 25px 24px; }
.capability-item + .capability-item { border-left: 1px solid var(--line); }
.capability-item h2 { margin-bottom: 8px; color: var(--ink); font-size: 17px; }
.capability-item p { margin: 0; color: var(--muted); font-size: 14px; }

.category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.category-card { position: relative; min-height: 225px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--white); overflow: hidden; transition: .22s ease; }
.category-card:hover { transform: translateY(-4px); border-color: rgba(41,128,254,.45); box-shadow: var(--shadow); }
.category-card.featured { grid-column: span 2; background: linear-gradient(135deg, var(--brand), var(--brand-dark)); border-color: transparent; color: var(--white); }
.category-card.wide { grid-column: span 2; }
.category-card h3 { color: var(--ink); font-size: 21px; }
.category-card.featured h3, .category-card.featured p, .category-card.featured .text-link { color: var(--white); }
.category-card p { color: var(--text); }
.category-number { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 24px; border-radius: 10px; background: var(--brand-soft); color: var(--brand-dark); font-size: 13px; font-weight: 900; }
.category-card.featured .category-number { background: rgba(255,255,255,.18); color: var(--white); }

.split-panel { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 60px; padding: 48px; border-radius: var(--radius-lg); background: var(--brand-soft); }
.split-panel.reverse { grid-template-columns: 1.1fr .9fr; }
.media-frame { min-height: 380px; display: grid; place-items: center; padding: 24px; border-radius: 24px; background: rgba(255,255,255,.78); overflow: hidden; }
.media-frame img { max-height: 430px; object-fit: contain; }
.content-panel { padding: 8px 0; }
.content-panel h2 { color: var(--ink); font-size: clamp(30px, 4vw, 44px); line-height: 1.2; }
.content-panel h3 { color: var(--ink); font-size: 24px; }
.content-panel p { font-size: 16px; }
.check-list { list-style: none; margin: 24px 0; padding: 0; display: grid; gap: 12px; }
.check-list.two-col { grid-template-columns: repeat(2, minmax(0,1fr)); }
.check-list li { position: relative; padding-left: 30px; color: var(--ink); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 21px; height: 21px; border-radius: 50%; background: var(--brand-soft); color: var(--brand-dark); font-size: 12px; font-weight: 900; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.offset-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.offset-card { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--white); box-shadow: 0 15px 45px rgba(23,32,51,.05); }
.offset-card:nth-child(2) { margin-top: 58px; background: var(--ice); }
.offset-card h3 { color: var(--ink); font-size: 28px; }
.topic-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; }
.topic-card { padding: 38px; border-radius: var(--radius-lg); background: var(--white); border: 1px solid var(--line); }
.topic-card.primary { background: linear-gradient(145deg, var(--brand-soft), var(--white)); }
.topic-card h3 { color: var(--ink); font-size: 30px; }
.topic-card .topic-image { width: 100%; max-height: 270px; margin-bottom: 24px; object-fit: contain; }

.security-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.security-principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.security-item { padding: 18px; border: 1px solid rgba(255,255,255,.2); border-radius: 16px; background: rgba(255,255,255,.08); }
.security-item strong { display: block; margin-bottom: 5px; color: var(--white); }
.security-item span { color: #d9eaff; font-size: 14px; }
.alert-box { padding: 24px; border-radius: 18px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); }
.alert-box p:last-child { margin-bottom: 0; }

.process-list { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; counter-reset: steps; }
.process-step { position: relative; min-height: 245px; padding: 22px 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); }
.process-step::before { counter-increment: steps; content: counter(steps, decimal-leading-zero); display: inline-flex; margin-bottom: 24px; color: var(--brand); font-size: 13px; font-weight: 900; }
.process-step h3 { color: var(--ink); font-size: 18px; }
.process-step p { color: var(--muted); font-size: 14px; }
.process-step a { color: var(--brand-dark); font-weight: 800; font-size: 13px; }

.timeline { display: grid; gap: 0; }
.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-item time { color: var(--brand-dark); font-weight: 800; }
.timeline-item h3 { margin-bottom: 4px; color: var(--ink); font-size: 18px; }
.timeline-item p { margin: 0; color: var(--muted); font-size: 14px; }
.timeline-item a { color: var(--brand-dark); font-weight: 800; }

.quote-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.quote-card { padding: 27px; border: 1px solid var(--line); border-radius: 20px; background: var(--white); }
.quote-card:nth-child(even) { background: var(--ice); }
.quote-card p { margin-bottom: 18px; color: var(--ink); }
.quote-card span { color: var(--muted); font-size: 13px; font-weight: 800; }

.faq-list { max-width: 900px; margin: 0 auto; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; min-height: 78px; padding: 18px 4px; display: flex; justify-content: space-between; gap: 20px; align-items: center; border: 0; background: transparent; color: var(--ink); text-align: left; font-weight: 800; cursor: pointer; }
.faq-question span:last-child { color: var(--brand); font-size: 24px; }
.faq-answer { padding: 0 48px 24px 4px; color: var(--text); }
.faq-answer p:last-child { margin-bottom: 0; }

.cta-panel { position: relative; overflow: hidden; padding: 66px 32px; border-radius: var(--radius-lg); background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: var(--white); text-align: center; }
.cta-panel::after { content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%; border: 1px solid rgba(255,255,255,.2); right: -130px; top: -160px; }
.cta-panel h2 { position: relative; z-index: 1; margin-bottom: 14px; color: var(--white); font-size: clamp(32px, 4vw, 48px); }
.cta-panel p { position: relative; z-index: 1; max-width: 700px; margin: 0 auto 26px; color: #e9f3ff; }
.cta-panel .download-btn { position: relative; z-index: 1; color: var(--brand-dark); background: var(--white); box-shadow: none; }

.page-hero { padding: 78px 0 62px; background: radial-gradient(circle at 80% 20%, rgba(41,128,254,.15), transparent 28%), var(--ice); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .72fr; align-items: center; gap: 60px; }
.page-hero h1 { margin-bottom: 20px; color: var(--ink); font-size: clamp(42px, 5vw, 64px); line-height: 1.08; letter-spacing: -.04em; }
.page-hero .lead { font-size: 19px; }
.page-visual { min-height: 320px; display: grid; place-items: center; padding: 26px; border: 1px solid rgba(41,128,254,.15); border-radius: 28px; background: rgba(255,255,255,.75); }
.page-visual img { max-height: 350px; object-fit: contain; }
.page-mark { display: grid; place-items: center; width: 170px; height: 170px; border-radius: 48px; background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: var(--white); font-size: 56px; font-weight: 900; box-shadow: 0 25px 60px rgba(41,128,254,.25); }
.content-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px; }
.prose-card, .list-card, .info-card { padding: 32px; border: 1px solid var(--line); border-radius: 22px; background: var(--white); }
.prose-card h2, .list-card h2, .info-card h2 { color: var(--ink); font-size: 28px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature-card { padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: var(--white); }
.feature-card:nth-child(2n) { background: var(--ice); }
.feature-card .mini-index { display: inline-flex; margin-bottom: 20px; color: var(--brand); font-size: 13px; font-weight: 900; }
.feature-card h3 { color: var(--ink); font-size: 20px; }
.feature-card p { margin: 0; color: var(--muted); }
.data-table { width: 100%; border-collapse: collapse; border-spacing: 0; overflow: hidden; border-radius: 16px; }
.data-table th, .data-table td { padding: 15px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.data-table th { color: var(--ink); background: var(--brand-soft); }
.data-table tr:last-child td { border-bottom: 0; }
.notice { padding: 24px; border-left: 4px solid var(--brand); border-radius: 0 16px 16px 0; background: var(--brand-soft); color: var(--ink); }
.related-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-links a { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); color: var(--ink); font-weight: 800; }
.related-links a:hover { border-color: var(--brand); color: var(--brand-dark); }

.site-footer { padding: 70px 0 0; background: var(--footer); color: #d8e3f2; }
.footer-shell { width: min(var(--content), calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 48px; }
.footer-brand p { max-width: 430px; color: #b8c8dc; }
.footer-logo { display: inline-flex; padding: 8px 12px; margin-bottom: 18px; border-radius: 12px; background: var(--white); }
.footer-column h2 { margin-bottom: 18px; color: var(--white); font-size: 16px; }
.footer-column a { display: block; padding: 5px 0; color: #b8c8dc; font-size: 14px; }
.footer-column a:hover { color: var(--white); }
.footer-bottom { width: min(var(--content), calc(100% - 40px)); margin: 52px auto 0; padding: 22px 0; display: flex; justify-content: space-between; gap: 30px; border-top: 1px solid rgba(255,255,255,.12); color: #91a6bf; font-size: 13px; }
.footer-bottom p { margin: 0; }

@media (max-width: 1120px) {
    .desktop-nav { display: none; }
    .menu-button { display: grid; }
    .header-shell { height: 72px; }
    .header-actions { margin-left: auto; }
    .hero-grid, .page-hero-grid { gap: 36px; }
    .process-list { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
    .section { padding: 70px 0; }
    .hero { padding-top: 65px; }
    .hero-grid, .page-hero-grid, .split-panel, .split-panel.reverse, .security-grid, .content-grid { grid-template-columns: 1fr; }
    .hero-copy { text-align: center; }
    .hero-copy .lead { margin-left: auto; margin-right: auto; }
    .hero-actions, .tag-row { justify-content: center; }
    .hero-visual { min-height: 430px; }
    .capability-grid { grid-template-columns: repeat(2, 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-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .category-card.featured, .category-card.wide { grid-column: span 2; }
    .topic-grid { grid-template-columns: 1fr; }
    .offset-grid { grid-template-columns: 1fr; }
    .offset-card:nth-child(2) { margin-top: 0; }
    .feature-grid, .quote-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-shell { grid-template-columns: repeat(2, 1fr); }
    .page-visual { min-height: 260px; }
}

@media (max-width: 640px) {
    .container, .header-shell, .footer-shell, .footer-bottom { width: min(100% - 28px, var(--content)); }
    .header-shell { gap: 10px; }
    .brand img { max-width: 122px; }
    .header-actions .download-btn { min-height: 42px; padding: 0 13px; font-size: 13px; }
    .menu-button { width: 42px; height: 42px; }
    .section { padding: 58px 0; }
    .hero { padding: 52px 0 65px; }
    .hero-copy h1 { font-size: clamp(38px, 12vw, 54px); }
    .hero-copy .lead { font-size: 17px; }
    .hero-actions { flex-direction: column; }
    .hero-actions a { width: 100%; }
    .hero-visual { min-height: 390px; }
    .hero-device { max-height: 350px; }
    .floating-note { position: static; max-width: none; width: calc(50% - 6px); margin: 6px; display: inline-flex; justify-content: center; text-align: center; }
    .hero-visual { display: block; text-align: center; }
    .hero-device { margin: 0 auto 16px; }
    .capability-strip { margin-top: -20px; }
    .capability-grid { grid-template-columns: 1fr; }
    .capability-item + .capability-item { border-left: 0; border-top: 1px solid var(--line); }
    .category-grid, .feature-grid, .quote-grid, .security-principles, .related-links { grid-template-columns: 1fr; }
    .category-card.featured, .category-card.wide { grid-column: span 1; }
    .split-panel { padding: 24px; gap: 30px; }
    .media-frame { min-height: 290px; padding: 16px; }
    .check-list.two-col { grid-template-columns: 1fr; }
    .topic-card, .offset-card, .prose-card, .list-card, .info-card { padding: 25px; }
    .process-list { grid-template-columns: 1fr; }
    .process-step { min-height: 0; }
    .timeline-item { grid-template-columns: 1fr; gap: 6px; }
    .timeline-item a { margin-top: 5px; }
    .page-hero { padding: 55px 0 48px; }
    .page-hero h1 { font-size: clamp(38px, 11vw, 52px); }
    .page-visual { min-height: 230px; }
    .data-table { display: block; overflow-x: auto; }
    .button-row { flex-direction: column; }
    .button-row a { width: 100%; }
    .cta-panel { padding: 48px 22px; }
    .footer-shell { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; gap: 8px; }
}