:root {
    --bg: #FFF9FC;
    --surface: #FFFFFF;
    --soft-pink: #FFF1F6;
    --soft-purple: #F6F3FF;
    --soft-gray: #F8F6F7;
    --title: #31262C;
    --text: #51454C;
    --muted: #7C6E75;
    --hint: #A2949B;
    --pink: #FF5C98;
    --berry: #D9467B;
    --peach: #FF96AD;
    --purple: #8B74E8;
    --deep-purple: #6250B0;
    --border: rgba(255, 92, 152, 0.15);
    --shadow: 0 14px 38px rgba(70, 44, 58, 0.08);
    --shadow-strong: 0 20px 48px rgba(217, 70, 123, 0.14);
    --gradient: linear-gradient(135deg, #FF96AD 0%, #FF5C98 50%, #8B74E8 100%);
    --max: 1220px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 18px); }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    color: var(--text);
    background:
        radial-gradient(circle at 8% 8%, rgba(255, 150, 173, 0.13), transparent 28%),
        radial-gradient(circle at 92% 18%, rgba(139, 116, 232, 0.10), transparent 28%),
        var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}
body.mobile-menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
[hidden] { display: none !important; }
::selection { background: rgba(255, 92, 152, 0.22); }

.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 3000;
    padding: 10px 16px;
    border-radius: 12px;
    color: #fff;
    background: var(--berry);
    transition: top .2s ease;
}
.skip-link:focus { top: 12px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid rgba(255, 92, 152, .10);
    background: rgba(255, 249, 252, .92);
    backdrop-filter: blur(18px);
}
.header-shell {
    width: min(calc(100% - 32px), var(--max));
    height: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto 1fr auto;
    align-items: center;
    gap: 18px;
}
.desktop-nav { display: flex; align-items: center; gap: 4px; min-width: 0; }
.desktop-nav--left { justify-content: flex-end; }
.desktop-nav--right { justify-content: flex-start; }
.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 12px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
    white-space: nowrap;
    transition: color .2s ease, background .2s ease, transform .2s ease;
}
.nav-link:hover, .nav-link:focus-visible { color: var(--berry); background: var(--soft-pink); }
.nav-link.is-active { color: var(--berry); background: #fff; box-shadow: 0 8px 22px rgba(217, 70, 123, .10); }
.brand {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 48px;
    white-space: nowrap;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--title);
}
.brand img { width: auto; max-height: 48px; }
.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 14px 14px 14px 5px;
    color: #fff;
    background: var(--gradient);
    box-shadow: 0 10px 22px rgba(217, 70, 123, .18);
    font-size: 18px;
}
.brand-text { font-size: 20px; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.round-menu-button, .mobile-menu-button, .panel-close {
    border: 0;
    cursor: pointer;
}
.round-menu-button, .mobile-menu-button {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    background: #fff;
    box-shadow: 0 8px 22px rgba(70, 44, 58, .09);
}
.round-menu-button span, .mobile-menu-button span { width: 17px; height: 2px; border-radius: 2px; background: var(--title); }
.mobile-menu-button, .mobile-experience { display: none; }

main { display: block; }
.page-main { min-height: 60vh; }
.section-shell { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; }
.content-section { padding: 84px 0; }
.content-section--soft { background: rgba(255, 241, 246, .72); }
.content-section--purple { background: rgba(246, 243, 255, .82); }
.content-section--white { background: rgba(255, 255, 255, .72); }
.eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--berry);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading h2, .page-hero h1, .home-hero h1 { color: var(--title); line-height: 1.2; letter-spacing: -.04em; }
.section-heading h2 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 48px); }
.section-heading p { margin: 0; color: var(--muted); font-size: 17px; }
.prose { font-size: 16px; }
.prose p { margin: 0 0 18px; }
.prose p:last-child { margin-bottom: 0; }
.text-link { display: inline-flex; align-items: center; min-height: 44px; color: var(--berry); font-weight: 700; }
.text-link::after { content: "→"; margin-left: 8px; transition: transform .2s ease; }
.text-link:hover::after, .text-link:focus-visible::after { transform: translateX(4px); }
.primary-button, .secondary-button, .soft-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 800;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease;
}
.primary-button { color: #fff; background: var(--gradient); box-shadow: 0 14px 28px rgba(217, 70, 123, .20); }
.secondary-button { color: var(--berry); background: #fff; border: 1px solid var(--border); }
.soft-button { color: var(--deep-purple); background: var(--soft-purple); }
.primary-button:hover, .primary-button:focus-visible, .secondary-button:hover, .secondary-button:focus-visible, .soft-button:hover, .soft-button:focus-visible { transform: translateY(-2px); box-shadow: var(--shadow); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.home-hero { padding: 70px 0 36px; }
.home-hero__grid { display: grid; grid-template-columns: .8fr 1.5fr .8fr; gap: 34px; align-items: center; }
.hero-note { padding: 24px; border: 1px solid var(--border); border-radius: 24px; background: rgba(255,255,255,.72); box-shadow: var(--shadow); }
.hero-note h2 { margin: 0 0 10px; color: var(--title); font-size: 18px; }
.hero-note p { margin: 0; color: var(--muted); font-size: 14px; }
.home-hero__center { text-align: center; }
.home-hero__brand { display: block; margin-bottom: 12px; color: var(--berry); font-weight: 800; letter-spacing: .18em; }
.home-hero h1 { margin: 0; font-size: clamp(42px, 6vw, 76px); }
.home-hero__lead { max-width: 780px; margin: 24px auto 0; color: var(--muted); font-size: 17px; }
.home-hero .button-row { justify-content: center; }
.home-hero__visual { margin-top: 44px; }

.visual-art, .site-media {
    position: relative;
    width: 100%;
    min-height: 330px;
    overflow: hidden;
    border-radius: 32px;
    background: linear-gradient(145deg, #fff 0%, #FFF0F6 45%, #F3EEFF 100%);
    border: 1px solid rgba(255,255,255,.9);
    box-shadow: var(--shadow-strong);
}
.site-media img { width: 100%; height: 100%; object-fit: cover; }
.visual-art::before { content: ""; position: absolute; inset: 12%; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.96), rgba(255,255,255,.20)); }
.visual-art__orb { position: absolute; border-radius: 50%; filter: blur(2px); }
.visual-art__orb--one { width: 210px; height: 210px; left: 10%; top: 18%; background: rgba(255, 92, 152, .34); }
.visual-art__orb--two { width: 250px; height: 250px; right: 8%; bottom: 8%; background: rgba(139, 116, 232, .30); }
.visual-art__frame { position: absolute; width: 38%; aspect-ratio: 4 / 5; left: 31%; top: 12%; border: 14px solid rgba(255,255,255,.82); border-radius: 34px; transform: rotate(6deg); box-shadow: 0 28px 48px rgba(70,44,58,.10); background: linear-gradient(160deg, rgba(255,150,173,.48), rgba(139,116,232,.26)); }
.visual-art__frame::before, .visual-art__frame::after { content: ""; position: absolute; border-radius: 50%; background: rgba(255,255,255,.88); }
.visual-art__frame::before { width: 34%; aspect-ratio: 1; right: 12%; top: 14%; }
.visual-art__frame::after { width: 70%; height: 26%; left: 15%; bottom: 14%; border-radius: 999px; }
.visual-art__spark { position: absolute; width: 16px; height: 16px; border-radius: 5px; background: #fff; transform: rotate(45deg); box-shadow: 0 8px 18px rgba(70,44,58,.12); }
.visual-art__spark--one { left: 20%; bottom: 18%; }
.visual-art__spark--two { right: 22%; top: 16%; }
.visual-art--compact { min-height: 260px; }
.visual-art--tall { min-height: 500px; }

.index-grid, .card-grid, .feature-grid, .feedback-grid { display: grid; gap: 20px; }
.index-grid { grid-template-columns: repeat(6, 1fr); }
.index-card, .content-card, .feature-card, .feedback-card, .notice-card, .step-card {
    position: relative;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: rgba(255,255,255,.86);
    box-shadow: var(--shadow);
}
.index-card { min-height: 220px; display: flex; flex-direction: column; }
.index-card::before { content: ""; width: 38px; height: 6px; border-radius: 999px; background: var(--gradient); margin-bottom: 24px; }
.index-card h3, .content-card h3, .feature-card h3, .feedback-card h3, .step-card h3 { margin: 0 0 10px; color: var(--title); font-size: 20px; }
.index-card p, .content-card p, .feature-card p, .feedback-card p, .notice-card p, .step-card p { margin: 0; color: var(--muted); }
.index-card .text-link { margin-top: auto; padding-top: 18px; }
.card-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-grid--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.feature-card { min-height: 230px; }
.card-number { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; margin-bottom: 20px; color: #fff; background: var(--gradient); font-weight: 800; }
.tag { display: inline-flex; align-items: center; min-height: 28px; margin-top: 16px; padding: 0 11px; border-radius: 999px; color: var(--deep-purple); background: var(--soft-purple); font-size: 12px; font-weight: 800; }
.story-feature { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: stretch; }
.story-feature__content { padding: 38px; border-radius: 30px; background: #fff; box-shadow: var(--shadow); }
.story-feature__content h3 { margin: 0 0 18px; color: var(--title); font-size: 30px; }
.story-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.story-item { padding: 22px; border-radius: 22px; background: rgba(255,255,255,.78); border: 1px solid var(--border); }
.story-item h3 { margin: 0 0 8px; color: var(--title); font-size: 18px; }
.story-item p { margin: 0; color: var(--muted); font-size: 14px; }

.split-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 44px; align-items: center; }
.split-layout--reverse > :first-child { order: 2; }
.split-layout--reverse > :last-child { order: 1; }
.check-list, .plain-list { margin: 24px 0 0; padding: 0; list-style: none; }
.check-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.check-list li { position: relative; padding: 14px 15px 14px 44px; border-radius: 16px; background: rgba(255,255,255,.78); border: 1px solid var(--border); }
.check-list li::before { content: "✓"; position: absolute; left: 15px; top: 14px; color: var(--berry); font-weight: 900; }
.plain-list li { padding: 13px 0; border-bottom: 1px solid rgba(255,92,152,.12); }

.topic-strip { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 14px; }
.topic-strip article { padding: 24px; min-height: 250px; border-radius: 24px; background: linear-gradient(180deg, rgba(255,255,255,.94), rgba(255,241,246,.82)); border: 1px solid var(--border); }
.topic-strip h3 { margin: 0 0 12px; color: var(--title); font-size: 18px; }
.topic-strip p { margin: 0; color: var(--muted); font-size: 14px; }

.safety-duo { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.safety-card { padding: 34px; border-radius: 28px; color: var(--text); background: #fff; box-shadow: var(--shadow); }
.safety-card--purple { background: var(--soft-purple); }
.safety-card h3 { margin: 0 0 12px; color: var(--title); font-size: 26px; }
.safety-card p { margin: 0 0 20px; }
.feedback-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.feedback-card { min-height: 190px; }
.feedback-card h3 { font-size: 16px; color: var(--berry); }

.faq-list { display: grid; gap: 12px; }
details {
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255,255,255,.88);
    box-shadow: 0 8px 26px rgba(70,44,58,.05);
}
summary { min-height: 58px; padding: 16px 54px 16px 20px; display: flex; align-items: center; position: relative; color: var(--title); font-weight: 800; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--berry); font-size: 24px; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 20px 20px; color: var(--muted); }

.page-hero { padding: 72px 0 54px; }
.page-hero__grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center; }
.page-hero h1 { margin: 0 0 20px; font-size: clamp(42px, 6vw, 72px); }
.page-hero__lead { max-width: 760px; color: var(--muted); font-size: 18px; }
.page-hero__lead p { margin: 0; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--hint); font-size: 13px; }
.breadcrumbs a:hover { color: var(--berry); }
.in-page-nav { width: min(calc(100% - 32px), var(--max)); margin: 0 auto 28px; display: flex; flex-wrap: wrap; gap: 10px; }
.in-page-nav a { display: inline-flex; min-height: 40px; align-items: center; padding: 0 14px; border-radius: 999px; color: var(--muted); background: #fff; border: 1px solid var(--border); }
.in-page-nav a:hover, .in-page-nav a:focus-visible { color: var(--berry); }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 36px; align-items: start; }
.article-body { padding: 36px; border-radius: 28px; background: rgba(255,255,255,.82); box-shadow: var(--shadow); }
.article-body h2 { margin: 0 0 18px; color: var(--title); font-size: 30px; }
.article-body h3 { margin: 34px 0 12px; color: var(--title); font-size: 23px; }
.article-body p { margin: 0 0 18px; }
.article-aside { position: sticky; top: calc(var(--header-height) + 24px); display: grid; gap: 18px; }
.aside-card { padding: 24px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.aside-card h2, .aside-card h3 { margin: 0 0 12px; color: var(--title); font-size: 19px; }
.aside-card p { margin: 0; color: var(--muted); font-size: 14px; }
.aside-links { display: grid; gap: 8px; }
.aside-links a { min-height: 42px; display: flex; align-items: center; justify-content: space-between; padding: 0 12px; border-radius: 12px; background: var(--soft-gray); }
.aside-links a::after { content: "›"; color: var(--berry); }

.timeline { position: relative; display: grid; gap: 18px; }
.timeline::before { content: ""; position: absolute; left: 22px; top: 20px; bottom: 20px; width: 2px; background: linear-gradient(var(--pink), var(--purple)); }
.timeline-item { position: relative; padding: 24px 24px 24px 66px; border-radius: 22px; background: #fff; border: 1px solid var(--border); }
.timeline-item::before { content: ""; position: absolute; left: 14px; top: 28px; width: 18px; height: 18px; border: 6px solid #fff; border-radius: 50%; background: var(--berry); box-shadow: 0 0 0 1px var(--border); }
.timeline-item h3 { margin: 0 0 8px; color: var(--title); }
.timeline-item p { margin: 0; color: var(--muted); }

.notice-band { padding: 26px 30px; border-radius: 24px; background: linear-gradient(135deg, rgba(255,241,246,.94), rgba(246,243,255,.94)); border: 1px solid var(--border); }
.notice-band h2, .notice-band h3 { margin: 0 0 10px; color: var(--title); }
.notice-band p { margin: 0; }
.cta-panel { padding: 48px; border-radius: 32px; text-align: center; color: #fff; background: var(--gradient); box-shadow: var(--shadow-strong); }
.cta-panel h2 { margin: 0 0 14px; color: #fff; font-size: clamp(30px, 4vw, 48px); }
.cta-panel p { max-width: 760px; margin: 0 auto; color: rgba(255,255,255,.9); }
.cta-panel .button-row { justify-content: center; }
.cta-panel .secondary-button { border-color: rgba(255,255,255,.5); }

.site-footer { padding: 70px 16px 30px; color: #FFEAF2; background: #30252B; }
.footer-shell { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: 34px; }
.footer-brand p { max-width: 340px; color: rgba(255,234,242,.72); }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; color: #fff; font-size: 20px; font-weight: 800; }
.footer-logo img { width: auto; max-height: 48px; }
.brand-mark--footer { box-shadow: none; }
.footer-group h2 { margin: 0 0 14px; color: #fff; font-size: 15px; }
.footer-group a { display: flex; min-height: 38px; align-items: center; color: rgba(255,234,242,.72); font-size: 14px; }
.footer-group a:hover, .footer-group a:focus-visible { color: #fff; }
.footer-bottom { width: min(100%, var(--max)); margin: 38px auto 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.10); display: flex; justify-content: space-between; gap: 24px; color: rgba(255,234,242,.62); font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-bottom p:first-child { max-width: 780px; }
.mobile-bottom-nav { display: none; }

.site-overlay, .mobile-overlay { position: fixed; inset: var(--header-height) 0 0; z-index: 1100; visibility: hidden; pointer-events: none; opacity: 0; background: rgba(49,38,44,.34); transition: opacity .2s ease, visibility .2s ease; }
.site-overlay.is-open, .mobile-overlay.is-open { visibility: visible; pointer-events: auto; opacity: 1; }
.channel-panel { position: fixed; left: 0; right: 0; top: var(--header-height); z-index: 1200; max-height: calc(100vh - var(--header-height)); overflow-y: auto; padding: 34px max(16px, calc((100vw - var(--max)) / 2)); border-top: 1px solid var(--border); background: rgba(255,249,252,.98); box-shadow: 0 28px 54px rgba(49,38,44,.16); }
.channel-panel__head { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; margin-bottom: 24px; }
.channel-panel__head h2 { margin: 0; color: var(--title); font-size: 30px; }
.panel-close { display: inline-grid; place-items: center; width: 44px; height: 44px; flex: 0 0 auto; border-radius: 50%; color: var(--title); background: #fff; box-shadow: var(--shadow); font-size: 28px; }
.channel-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.channel-grid section { padding: 22px; border-radius: 22px; background: #fff; border: 1px solid var(--border); }
.channel-grid h3 { margin: 0 0 12px; color: var(--title); font-size: 17px; }
.channel-grid a { display: block; padding: 12px; border-radius: 14px; }
.channel-grid a:hover, .channel-grid a:focus-visible { background: var(--soft-pink); }
.channel-grid b { display: block; color: var(--title); font-size: 14px; }
.channel-grid span { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; line-height: 1.55; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1300; width: min(88vw, 380px); height: 100dvh; overflow-y: auto; padding: 20px; background: var(--bg); box-shadow: -24px 0 54px rgba(49,38,44,.18); }
.mobile-drawer__head { display: flex; justify-content: space-between; gap: 14px; align-items: center; margin-bottom: 18px; }
.mobile-drawer__brand { display: inline-flex; min-height: 48px; align-items: center; gap: 8px; color: var(--title); font-weight: 800; }
.mobile-drawer__brand img { width: auto; max-height: 42px; }
.mobile-drawer__nav { display: grid; gap: 6px; padding-bottom: 30px; }
.mobile-drawer__nav a { display: flex; min-height: 48px; align-items: center; justify-content: space-between; padding: 0 15px; border-radius: 14px; background: #fff; border: 1px solid transparent; }
.mobile-drawer__nav a::after { content: "›"; color: var(--berry); }
.mobile-drawer__nav a:hover, .mobile-drawer__nav a:focus-visible { border-color: var(--border); background: var(--soft-pink); }

:focus-visible { outline: 3px solid rgba(139,116,232,.48); outline-offset: 3px; }

@media (max-width: 1100px) {
    .header-shell { grid-template-columns: 1fr auto 1fr auto; gap: 10px; }
    .nav-link { padding: 0 8px; font-size: 13px; }
    .brand-text { font-size: 18px; }
    .index-grid { grid-template-columns: repeat(3, 1fr); }
    .topic-strip { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .card-grid--4, .card-grid--5 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-shell { grid-template-columns: 1.4fr repeat(2, 1fr); }
    .footer-brand { grid-row: span 2; }
}

@media (max-width: 860px) {
    :root { --header-height: 68px; }
    .desktop-nav, .round-menu-button { display: none; }
    .header-shell { grid-template-columns: 1fr auto; }
    .brand { justify-content: flex-start; }
    .mobile-menu-button, .mobile-experience { display: inline-flex; }
    .mobile-experience { min-height: 42px; align-items: center; justify-content: center; padding: 0 16px; border-radius: 999px; color: #fff; background: var(--gradient); font-size: 14px; font-weight: 800; }
    .home-hero__grid { grid-template-columns: 1fr 1fr; }
    .home-hero__center { grid-column: 1 / -1; grid-row: 1; }
    .home-hero__grid .hero-note:first-child { grid-column: 1; grid-row: 2; }
    .home-hero__grid .hero-note:last-child { grid-column: 2; grid-row: 2; }
    .page-hero__grid, .split-layout, .story-feature, .article-layout { grid-template-columns: 1fr; }
    .split-layout--reverse > :first-child, .split-layout--reverse > :last-child { order: initial; }
    .article-aside { position: static; grid-template-columns: repeat(2, minmax(0,1fr)); }
    .feedback-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .topic-strip { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .channel-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-shell { grid-template-columns: repeat(2, 1fr); }
    .footer-brand { grid-column: 1 / -1; grid-row: auto; }
    .footer-bottom { flex-direction: column; }
}

@media (max-width: 640px) {
    body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
    .header-shell, .section-shell, .in-page-nav { width: min(calc(100% - 32px), var(--max)); }
    .brand-text { font-size: 17px; }
    .brand-mark { width: 34px; height: 34px; }
    .mobile-experience { padding: 0 14px; }
    .home-hero { padding-top: 48px; }
    .home-hero__grid { grid-template-columns: 1fr; }
    .home-hero__grid .hero-note:first-child, .home-hero__grid .hero-note:last-child { grid-column: 1; grid-row: auto; }
    .home-hero__center { text-align: left; }
    .home-hero .button-row { justify-content: flex-start; }
    .home-hero h1 { font-size: clamp(40px, 14vw, 58px); }
    .home-hero__lead { font-size: 16px; }
    .content-section { padding: 62px 0; }
    .index-grid, .card-grid--2, .card-grid--3, .card-grid--4, .card-grid--5, .feedback-grid, .safety-duo, .story-list, .topic-strip, .check-list, .article-aside { grid-template-columns: 1fr; }
    .index-card { min-height: auto; }
    .visual-art, .site-media { min-height: 260px; border-radius: 24px; }
    .visual-art--tall { min-height: 380px; }
    .page-hero { padding-top: 46px; }
    .page-hero h1 { font-size: clamp(38px, 12vw, 56px); }
    .page-hero__lead { font-size: 16px; }
    .article-body, .story-feature__content { padding: 24px; border-radius: 24px; }
    .channel-panel { display: none !important; }
    .mobile-bottom-nav {
        position: fixed;
        left: 12px;
        right: 12px;
        bottom: max(10px, env(safe-area-inset-bottom));
        z-index: 900;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        min-height: 62px;
        padding: 6px;
        border: 1px solid var(--border);
        border-radius: 22px;
        background: rgba(255,255,255,.94);
        box-shadow: 0 16px 36px rgba(49,38,44,.16);
        backdrop-filter: blur(16px);
    }
    .mobile-bottom-nav a { display: flex; min-height: 50px; flex-direction: column; align-items: center; justify-content: center; gap: 2px; border-radius: 16px; color: var(--hint); font-size: 13px; }
    .mobile-bottom-nav a span { font-size: 18px; line-height: 1; }
    .mobile-bottom-nav a b { font-size: 11px; }
    .mobile-bottom-nav a.is-active { color: var(--berry); background: var(--soft-pink); }
    .footer-shell { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-brand { grid-column: 1 / -1; }
    .cta-panel { padding: 34px 22px; }
}

@media (max-width: 420px) {
    .header-shell { width: calc(100% - 24px); }
    .brand-mark { display: none; }
    .footer-shell { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .button-row { flex-direction: column; }
    .primary-button, .secondary-button, .soft-button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}