:root {
  --page: #fff9fc;
  --surface: #ffffff;
  --pink-soft: #fff1f6;
  --purple-soft: #f6f3ff;
  --gray-soft: #f8f6f7;
  --ink: #31262c;
  --text: #51454c;
  --muted: #7c6e75;
  --hint: #a2949b;
  --pink: #ff5c98;
  --berry: #d9467b;
  --peach: #ff96ad;
  --purple: #8b74e8;
  --purple-dark: #6250b0;
  --line: 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%);
  --header-height: 78px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--page); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
.wrap { width: min(1220px, calc(100% - 40px)); margin: 0 auto; }
.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; }
.skip-link { position: fixed; z-index: 3000; left: 16px; top: -80px; padding: 10px 18px; border-radius: 999px; background: var(--ink); color: #fff; transition: top .2s ease; }
.skip-link:focus { top: 12px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(139,116,232,.4); outline-offset: 3px; }
.site-header { position: fixed; z-index: 1000; top: 0; left: 0; right: 0; height: var(--header-height); background: rgba(255,249,252,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.desktop-nav { height: 100%; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; }
.nav-side { display: flex; align-items: center; gap: 8px; min-width: 0; }
.nav-right { justify-content: flex-end; }
.nav-link { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0 14px; border-radius: 999px; color: var(--muted); font-size: 14px; font-weight: 700; white-space: nowrap; transition: background .2s ease, color .2s ease, transform .2s ease; }
.nav-link:hover, .nav-link.is-active { background: var(--surface); color: var(--berry); box-shadow: 0 8px 22px rgba(70,44,58,.07); transform: translateY(-1px); }
.brand-link, .mobile-brand, .footer-logo { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; }
.brand-link img, .mobile-brand img, .footer-logo img, .drawer-head img { width: auto; max-height: 44px; object-fit: contain; }
.brand-text { display: inline-flex; align-items: center; gap: 8px; font-size: 23px; font-weight: 900; letter-spacing: .04em; color: var(--ink); }
.brand-text::before { content: ""; width: 34px; height: 34px; border-radius: 12px 16px 12px 18px; background: var(--gradient); box-shadow: 0 10px 22px rgba(217,70,123,.25); transform: rotate(-8deg); }
.round-menu-button { width: 46px; height: 46px; flex: 0 0 46px; border: 1px solid var(--line); border-radius: 50%; background: #fff; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; box-shadow: 0 8px 22px rgba(70,44,58,.07); }
.round-menu-button span { width: 17px; height: 2px; border-radius: 2px; background: var(--ink); pointer-events: none; }
.mobile-header { display: none; height: 100%; align-items: center; justify-content: space-between; }
.mobile-header-actions { display: flex; align-items: center; gap: 10px; }
.mobile-experience { min-height: 44px; display: inline-flex; align-items: center; padding: 0 18px; border-radius: 999px; color: #fff; background: var(--gradient); font-weight: 800; }
.site-main { padding-top: var(--header-height); }
.section { position: relative; padding: 92px 0; }
.section.compact { padding: 68px 0; }
.section-soft { background: var(--pink-soft); }
.section-purple { background: var(--purple-soft); }
.section-white { background: var(--surface); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--berry); font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 24px; height: 2px; border-radius: 999px; background: var(--gradient); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading.center .eyebrow { justify-content: center; }
.section-heading h2, .inner-hero h1 { margin: 0; color: var(--ink); line-height: 1.2; letter-spacing: -.02em; }
.section-heading h2 { font-size: clamp(30px, 4vw, 52px); }
.section-heading p { margin: 16px 0 0; color: var(--muted); font-size: 17px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; border-radius: 999px; font-weight: 900; white-space: nowrap; transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--gradient); box-shadow: 0 14px 28px rgba(217,70,123,.2); }
.btn-secondary { background: #fff; color: var(--berry); border: 1px solid var(--line); }
.text-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 16px; color: var(--berry); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.card-grid { display: grid; gap: 20px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.content-card { position: relative; overflow: hidden; padding: 26px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: var(--shadow); }
.content-card h3 { margin: 0 0 10px; color: var(--ink); font-size: 21px; line-height: 1.35; }
.content-card p { margin: 0; color: var(--muted); }
.content-card .tag { display: inline-flex; margin-top: 16px; padding: 5px 11px; border-radius: 999px; background: var(--pink-soft); color: var(--berry); font-size: 12px; font-weight: 800; }
.card-number { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; margin-bottom: 18px; border-radius: 15px; background: var(--gradient); color: #fff; font-weight: 900; box-shadow: 0 10px 24px rgba(217,70,123,.18); }
.visual-card { min-height: 220px; position: relative; overflow: hidden; border-radius: 28px; background: linear-gradient(145deg, #fff 0%, #fff1f6 46%, #f6f3ff 100%); border: 1px solid var(--line); box-shadow: var(--shadow); }
.visual-card::before, .visual-card::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.visual-card::before { width: 220px; height: 220px; right: -62px; top: -70px; background: rgba(255,92,152,.18); }
.visual-card::after { width: 160px; height: 160px; left: -35px; bottom: -54px; background: rgba(139,116,232,.18); }
.visual-content { position: relative; z-index: 1; height: 100%; padding: 28px; display: flex; flex-direction: column; justify-content: flex-end; }
.visual-content small { color: var(--berry); font-weight: 900; }
.visual-content h3 { margin: 8px 0 0; color: var(--ink); font-size: 25px; }
.home-hero { padding: 74px 0 68px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: .8fr 1.5fr .8fr; gap: 28px; align-items: center; }
.hero-side { padding: 26px; border-radius: 26px; background: rgba(255,255,255,.82); border: 1px solid var(--line); box-shadow: var(--shadow); }
.hero-side h2 { margin: 0 0 10px; color: var(--ink); font-size: 21px; }
.hero-side p { margin: 0; color: var(--muted); }
.hero-center { text-align: center; position: relative; z-index: 1; }
.hero-center .brand-kicker { display: inline-flex; padding: 7px 14px; border-radius: 999px; background: var(--pink-soft); color: var(--berry); font-weight: 900; }
.hero-center h1 { margin: 20px 0; color: var(--ink); font-size: clamp(42px, 6vw, 76px); line-height: 1.05; letter-spacing: -.04em; }
.hero-center p { max-width: 760px; margin: 0 auto; font-size: 17px; color: var(--muted); }
.hero-center .btn-row { justify-content: center; }
.hero-stage { margin-top: 42px; min-height: 330px; border-radius: 34px; position: relative; overflow: hidden; background: linear-gradient(125deg, #ffe3ed 0%, #fff 44%, #eee9ff 100%); border: 1px solid var(--line); box-shadow: var(--shadow-strong); }
.hero-stage::before { content: ""; position: absolute; inset: 28px; border-radius: 26px; border: 1px solid rgba(255,255,255,.9); }
.hero-stage .stage-card { position: absolute; width: min(310px, 36%); min-height: 176px; padding: 24px; border-radius: 26px; background: rgba(255,255,255,.9); box-shadow: var(--shadow); }
.stage-card.one { left: 7%; top: 18%; transform: rotate(-3deg); }
.stage-card.two { right: 7%; bottom: 14%; transform: rotate(3deg); }
.stage-card.center { left: 50%; top: 50%; width: min(360px, 40%); transform: translate(-50%, -50%); background: var(--gradient); color: #fff; }
.stage-card h3 { margin: 0 0 10px; font-size: 23px; color: inherit; }
.stage-card p { margin: 0; color: inherit; opacity: .88; }
.index-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.index-link { min-height: 168px; display: flex; flex-direction: column; justify-content: space-between; padding: 24px; border-radius: 24px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease; }
.index-link:hover { transform: translateY(-4px); box-shadow: var(--shadow-strong); }
.index-link h3 { margin: 0 0 9px; color: var(--ink); }
.index-link p { margin: 0; color: var(--muted); }
.index-link span { color: var(--berry); font-weight: 800; }
.story-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; }
.story-feature { min-height: 100%; padding: 34px; border-radius: 30px; background: var(--gradient); color: #fff; box-shadow: var(--shadow-strong); }
.story-feature h3 { margin: 0 0 14px; font-size: 31px; line-height: 1.25; }
.story-feature p { margin: 0; opacity: .92; }
.story-feature .tag { background: rgba(255,255,255,.18); color: #fff; }
.story-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.story-item { padding: 22px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.story-item h3 { margin: 0 0 9px; color: var(--ink); font-size: 18px; }
.story-item p { margin: 0; color: var(--muted); font-size: 14px; }
.interest-cloud { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.interest-chip { min-height: 170px; padding: 22px; border-radius: 24px; background: #fff; border: 1px solid var(--line); }
.interest-chip h3 { margin: 0 0 8px; color: var(--ink); }
.interest-chip p { margin: 0; color: var(--muted); font-size: 14px; }
.topic-list { display: grid; gap: 16px; }
.topic-row { display: grid; grid-template-columns: 72px 1fr auto; gap: 20px; align-items: center; padding: 22px 24px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.topic-row .topic-index { width: 56px; height: 56px; border-radius: 18px; display: grid; place-items: center; background: var(--purple-soft); color: var(--purple-dark); font-weight: 900; }
.topic-row h3 { margin: 0 0 5px; color: var(--ink); }
.topic-row p { margin: 0; color: var(--muted); }
.topic-row a { color: var(--berry); font-weight: 800; white-space: nowrap; }
.app-showcase { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: center; }
.phone-visual { min-height: 520px; display: grid; place-items: center; position: relative; border-radius: 36px; background: linear-gradient(145deg, #ffe7ef, #fff, #eee9ff); overflow: hidden; border: 1px solid var(--line); }
.phone-shell { width: 250px; min-height: 420px; padding: 18px; border-radius: 38px; background: var(--ink); box-shadow: 0 28px 60px rgba(49,38,44,.22); transform: rotate(4deg); }
.phone-screen { min-height: 384px; padding: 22px 16px; border-radius: 26px; background: #fff9fc; }
.phone-screen .screen-line { height: 12px; margin-bottom: 12px; border-radius: 999px; background: #f2dbe4; }
.phone-screen .screen-line.short { width: 58%; }
.phone-screen .screen-image { height: 170px; margin: 18px 0; border-radius: 22px; background: var(--gradient); }
.check-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 26px; }
.check-list div { padding: 16px; border-radius: 18px; background: rgba(255,255,255,.78); border: 1px solid var(--line); }
.check-list b { display: block; margin-bottom: 4px; color: var(--ink); }
.split-panels { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.info-panel { padding: 32px; border-radius: 30px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.info-panel.pink { background: linear-gradient(145deg, #fff, #fff1f6); }
.info-panel.purple { background: linear-gradient(145deg, #fff, #f6f3ff); }
.info-panel h3 { margin: 0 0 14px; color: var(--ink); font-size: 28px; }
.info-panel p { margin: 0; color: var(--muted); }
.feedback-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feedback-card { padding: 24px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.feedback-card p { margin: 0; color: var(--text); }
.feedback-card span { display: block; margin-top: 14px; color: var(--berry); font-weight: 800; }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 18px; background: #fff; overflow: hidden; }
summary { min-height: 58px; padding: 16px 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; color: var(--ink); font-weight: 800; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 24px; color: var(--berry); }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 22px 20px; color: var(--muted); }
.inner-hero { position: relative; overflow: hidden; padding: 88px 0 64px; background: linear-gradient(145deg, #fff9fc 0%, #fff1f6 54%, #f6f3ff 100%); }
.inner-hero::before { content: ""; position: absolute; width: 360px; height: 360px; border-radius: 50%; right: -110px; top: -160px; background: rgba(255,92,152,.12); pointer-events: none; }
.inner-hero-grid { display: grid; grid-template-columns: 1fr .78fr; gap: 40px; align-items: center; }
.inner-hero h1 { font-size: clamp(42px, 6vw, 72px); }
.inner-hero p { max-width: 800px; margin: 20px 0 0; color: var(--muted); font-size: 17px; }
.hero-note { padding: 28px; border-radius: 28px; background: rgba(255,255,255,.82); border: 1px solid var(--line); box-shadow: var(--shadow); }
.hero-note h2 { margin: 0 0 10px; color: var(--ink); font-size: 24px; }
.hero-note p { margin: 0; font-size: 15px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 30px; align-items: start; }
.article-main { display: grid; gap: 22px; }
.article-section { padding: 30px; border-radius: 26px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.article-section:nth-child(even) { background: linear-gradient(145deg, #fff, #fff8fb); }
.article-section h2 { margin: 0 0 14px; color: var(--ink); font-size: 28px; line-height: 1.3; }
.article-section h3 { margin: 22px 0 8px; color: var(--ink); font-size: 19px; }
.article-section p { margin: 0 0 12px; }
.article-section p:last-child { margin-bottom: 0; }
.article-section ul, .article-section ol { margin: 12px 0 0; padding-left: 22px; }
.article-section li + li { margin-top: 8px; }
.side-card { position: sticky; top: calc(var(--header-height) + 22px); padding: 24px; border-radius: 24px; background: var(--purple-soft); border: 1px solid rgba(139,116,232,.14); }
.side-card h2 { margin: 0 0 12px; color: var(--ink); font-size: 21px; }
.side-card a { min-height: 44px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(139,116,232,.12); color: var(--purple-dark); font-weight: 800; }
.side-card a:last-child { border-bottom: 0; }
.notice-box { padding: 22px; border-left: 4px solid var(--berry); border-radius: 0 18px 18px 0; background: var(--pink-soft); }
.notice-box strong { color: var(--ink); }
.steps { counter-reset: step; display: grid; gap: 16px; }
.step { position: relative; padding: 22px 22px 22px 76px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 40px; height: 40px; display: grid; place-items: center; border-radius: 14px; background: var(--gradient); color: #fff; font-weight: 900; }
.step h3 { margin: 0 0 6px; color: var(--ink); }
.step p { margin: 0; color: var(--muted); }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag-row span { padding: 7px 12px; border-radius: 999px; background: var(--pink-soft); color: var(--berry); font-size: 13px; font-weight: 800; }
.service-end { margin-top: 28px; padding: 28px; border-radius: 28px; background: var(--gradient); color: #fff; }
.service-end h2 { margin: 0 0 10px; color: #fff; }
.service-end p { margin: 0; opacity: .92; }
.service-end .btn-secondary { margin-top: 20px; border-color: rgba(255,255,255,.4); }
.site-footer { position: relative; z-index: 2; padding: 70px 0 24px; background: #30252b; color: #ffeaf2; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 28px; }
.footer-brand p { max-width: 320px; margin: 18px 0 0; color: rgba(255,234,242,.72); }
.footer-logo .brand-text { color: #fff; }
.site-footer h2 { margin: 0 0 14px; color: #fff; font-size: 16px; }
.site-footer a { display: block; min-height: 38px; color: rgba(255,234,242,.76); font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; gap: 24px; color: rgba(255,234,242,.58); font-size: 13px; }
.footer-bottom p { margin: 0; }
.page-overlay { position: fixed; z-index: 1180; inset: 0; background: rgba(49,38,44,.34); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease, visibility .2s ease; }
.page-overlay.is-visible { opacity: 1; visibility: visible; pointer-events: auto; }
.channel-panel { position: fixed; z-index: 1200; top: var(--header-height); left: 0; right: 0; max-height: calc(100vh - var(--header-height)); overflow-y: auto; background: #fff9fc; border-bottom: 1px solid var(--line); transform: translateY(-110%); visibility: hidden; pointer-events: none; transition: transform .28s ease, visibility .28s ease; }
.channel-panel.is-open { transform: translateY(0); visibility: visible; pointer-events: auto; }
.channel-panel-inner { padding-top: 30px; padding-bottom: 34px; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.panel-heading span { color: var(--berry); font-size: 13px; font-weight: 900; }
.panel-heading h2 { margin: 4px 0 0; color: var(--ink); font-size: 26px; }
.panel-close, .drawer-head button { width: 46px; height: 46px; border: 0; border-radius: 50%; background: #fff; box-shadow: var(--shadow); cursor: pointer; font-size: 28px; line-height: 1; }
.channel-columns { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.channel-columns > div { padding: 22px; border-radius: 24px; background: #fff; border: 1px solid var(--line); }
.channel-columns h3 { margin: 0 0 12px; color: var(--ink); }
.channel-columns a { display: block; min-height: 68px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.channel-columns a:last-child { border-bottom: 0; }
.channel-columns b, .channel-columns span { display: block; }
.channel-columns b { color: var(--ink); }
.channel-columns span { margin-top: 3px; color: var(--muted); font-size: 12px; line-height: 1.55; }
.mobile-drawer { position: fixed; z-index: 1250; top: 0; right: 0; bottom: 0; width: min(88vw, 390px); padding: 18px 18px calc(24px + env(safe-area-inset-bottom)); background: #fff9fc; transform: translateX(104%); visibility: hidden; pointer-events: none; transition: transform .28s ease, visibility .28s ease; overflow-y: auto; }
.mobile-drawer.is-open { transform: translateX(0); visibility: visible; pointer-events: auto; }
.drawer-head { position: sticky; top: -18px; z-index: 2; display: flex; align-items: center; justify-content: space-between; padding: 14px 0 16px; background: #fff9fc; }
.drawer-head a { display: inline-flex; align-items: center; min-height: 44px; }
.drawer-links { display: grid; gap: 8px; }
.drawer-links a { min-height: 48px; display: flex; align-items: center; padding: 0 16px; border-radius: 16px; background: #fff; border: 1px solid var(--line); color: var(--ink); font-weight: 800; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
  .nav-link { padding: 0 9px; font-size: 13px; }
  .desktop-nav { gap: 12px; }
  .channel-columns { grid-template-columns: repeat(2, 1fr); }
  .interest-cloud { grid-template-columns: repeat(2, 1fr); }
  .feedback-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr repeat(2, 1fr); }
}
@media (max-width: 820px) {
  :root { --header-height: 68px; }
  .wrap { width: min(100% - 32px, 1220px); }
  .desktop-nav { display: none; }
  .mobile-header { display: flex; }
  .mobile-brand .brand-text { font-size: 20px; }
  .mobile-brand .brand-text::before { width: 30px; height: 30px; }
  .section { padding: 72px 0; }
  .home-hero { padding: 52px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-center { order: -1; }
  .hero-side { text-align: left; }
  .hero-stage { min-height: 430px; }
  .stage-card { width: calc(100% - 48px) !important; left: 24px !important; right: auto !important; transform: none !important; }
  .stage-card.one { top: 24px; }
  .stage-card.center { top: 50%; transform: translateY(-50%) !important; }
  .stage-card.two { top: auto; bottom: 24px; }
  .index-grid, .card-grid.three, .card-grid.four { grid-template-columns: repeat(2, 1fr); }
  .story-layout, .app-showcase, .inner-hero-grid, .article-layout { grid-template-columns: 1fr; }
  .story-list { grid-template-columns: 1fr 1fr; }
  .phone-visual { min-height: 460px; }
  .side-card { position: static; }
  .topic-row { grid-template-columns: 56px 1fr; }
  .topic-row a { grid-column: 2; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .site-footer { padding-bottom: calc(100px + env(safe-area-inset-bottom)); }
  .mobile-bottom-nav { position: fixed; z-index: 1050; left: 12px; right: 12px; bottom: calc(10px + env(safe-area-inset-bottom)); min-height: 64px; display: grid; grid-template-columns: repeat(4, 1fr); padding: 6px; border-radius: 22px; background: rgba(255,255,255,.96); border: 1px solid var(--line); box-shadow: 0 18px 38px rgba(49,38,44,.18); backdrop-filter: blur(16px); }
  .mobile-bottom-nav a { min-height: 52px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; border-radius: 16px; color: var(--muted); font-size: 11px; }
  .mobile-bottom-nav a.is-active { color: #fff; background: var(--gradient); }
  .mobile-bottom-nav b { font-size: 11px; }
  .mini-icon { font-size: 18px; line-height: 1; }
}
@media (max-width: 600px) {
  .section-heading h2 { font-size: 34px; }
  .hero-center h1, .inner-hero h1 { font-size: 43px; }
  .hero-center p, .inner-hero p { font-size: 15px; }
  .index-grid, .card-grid.two, .card-grid.three, .card-grid.four, .story-list, .interest-cloud, .feedback-grid, .split-panels, .check-list { grid-template-columns: 1fr; }
  .content-card, .article-section, .info-panel { padding: 24px 20px; }
  .story-feature { padding: 28px 22px; }
  .topic-row { grid-template-columns: 46px 1fr; gap: 14px; padding: 18px; }
  .topic-row .topic-index { width: 44px; height: 44px; border-radius: 14px; }
  .channel-columns { grid-template-columns: 1fr; }
  .panel-heading h2 { font-size: 21px; }
  .channel-panel-inner { padding-top: 22px; }
  .phone-shell { width: 220px; min-height: 390px; }
  .phone-screen { min-height: 354px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}