:root {
    --bg: #FFF8FB;
    --surface: #FFFFFF;
    --soft-pink: #FFF0F6;
    --soft-purple: #F7F3FF;
    --soft-gray: #F8F4F6;
    --title: #32262D;
    --text: #51444C;
    --muted: #7C6D76;
    --light-text: #A09199;
    --pink: #FF5D9E;
    --berry: #D94C83;
    --coral: #FF8EAC;
    --purple: #8C76E8;
    --deep-purple: #6753B5;
    --border: rgba(255,93,158,0.15);
    --shadow: 0 14px 36px rgba(76,48,66,0.08);
    --shadow-strong: 0 18px 46px rgba(217,76,131,0.15);
    --gradient: linear-gradient(135deg, #FF8EAC 0%, #FF5D9E 52%, #8C76E8 100%);
    --footer: #30242B;
    --footer-text: #FFEAF2;
    --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
:focus-visible { outline: 3px solid rgba(140,118,232,.45); outline-offset: 3px; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 3000; padding: 10px 16px; border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); }
.skip-link:focus { top: 16px; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.sticky-shell { position: sticky; top: 0; z-index: 1000; }
.top-note { background: #49343F; color: #FFEAF2; font-size: 13px; }
.top-note-inner { position: relative; min-height: 30px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.top-note-links { display: flex; gap: 18px; }
.top-note a:hover { color: #fff; }
.site-header { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--border); backdrop-filter: blur(14px); }
.nav-wrap { min-height: 72px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--title); white-space: nowrap; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 13px; color: white; background: var(--gradient); box-shadow: 0 10px 26px rgba(217,76,131,.24); }
.brand-text { font-size: 18px; letter-spacing: .02em; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 4px; min-width: 0; }
.nav-link { min-height: 44px; display: inline-flex; align-items: center; padding: 0 16px; border-radius: 999px; color: var(--muted); font-weight: 650; white-space: nowrap; }
.nav-link:hover, .nav-link.is-active { color: var(--berry); background: var(--soft-pink); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 22px; border: 0; border-radius: 999px; font-weight: 750; cursor: pointer; white-space: nowrap; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--gradient); box-shadow: 0 12px 26px rgba(217,76,131,.22); }
.button-secondary { color: var(--berry); background: var(--surface); border: 1px solid var(--border); }
.button-ghost { color: var(--berry); background: var(--soft-pink); }
.button-small { min-height: 42px; padding-inline: 17px; font-size: 14px; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--berry); font-weight: 750; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.mobile-menu-trigger, .mobile-experience { display: none; }
main { min-height: 60vh; }
.section { padding: 84px 0; }
.section-tight { padding: 58px 0; }
.section-soft { background: var(--soft-pink); }
.section-purple { background: var(--soft-purple); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
.section-heading > div { max-width: 760px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 9px; color: var(--berry); font-size: 13px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 99px; background: var(--gradient); }
h1, h2, h3 { color: var(--title); line-height: 1.24; margin-top: 0; }
h1 { font-size: clamp(38px, 6vw, 72px); letter-spacing: -.04em; margin-bottom: 22px; }
h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.025em; margin-bottom: 14px; }
h3 { font-size: 20px; margin-bottom: 10px; }
p { margin-top: 0; }
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--muted); }
.hero { position: relative; overflow: hidden; padding: 78px 0 88px; }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(1px); pointer-events: none; }
.hero::before { width: 360px; height: 360px; right: -120px; top: 20px; background: radial-gradient(circle, rgba(255,142,172,.28), rgba(255,142,172,0)); }
.hero::after { width: 300px; height: 300px; left: -120px; bottom: -120px; background: radial-gradient(circle, rgba(140,118,232,.18), rgba(140,118,232,0)); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .72fr .72fr; gap: 28px; align-items: center; }
.hero-copy .brand-kicker { display: inline-flex; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; background: rgba(255,255,255,.72); color: var(--berry); font-weight: 750; margin-bottom: 18px; }
.hero-copy p { max-width: 680px; }
.hero-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 30px; }
.phone-visual { position: relative; width: min(100%, 330px); aspect-ratio: .62; margin: auto; border: 10px solid #3E2C35; border-radius: 44px; background: linear-gradient(180deg, #FFF, #FFF0F6); box-shadow: 0 26px 70px rgba(80,45,65,.2); overflow: hidden; }
.phone-visual::before { content: ""; position: absolute; width: 42%; height: 22px; top: 8px; left: 29%; border-radius: 99px; background: #3E2C35; }
.phone-screen { padding: 56px 18px 18px; height: 100%; display: flex; flex-direction: column; gap: 13px; }
.phone-top { height: 72px; border-radius: 20px; background: var(--gradient); }
.phone-card { min-height: 76px; border-radius: 18px; padding: 14px; background: white; box-shadow: var(--shadow); display: grid; grid-template-columns: 50px 1fr; gap: 12px; align-items: center; }
.phone-thumb { width: 50px; height: 50px; border-radius: 15px; background: linear-gradient(135deg, #FFD7E6, #DCD4FF); }
.phone-lines { display: grid; gap: 8px; }
.phone-lines span { height: 8px; border-radius: 99px; background: #F1E8ED; }
.phone-lines span:last-child { width: 68%; }
.hero-side { display: grid; gap: 18px; }
.hero-mini-card { padding: 28px; border-radius: 24px; background: rgba(255,255,255,.88); border: 1px solid var(--border); box-shadow: var(--shadow); }
.hero-mini-card:nth-child(2) { background: linear-gradient(145deg, #F7F3FF, #fff); }
.hero-mini-card .icon-dot { width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 16px; background: var(--soft-pink); color: var(--berry); font-weight: 900; }
.interest-scroll { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(180px, 1fr); gap: 14px; overflow-x: auto; padding: 4px 2px 14px; scroll-snap-type: x proximity; }
.interest-card { scroll-snap-align: start; min-height: 150px; padding: 22px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.interest-card p { color: var(--muted); font-size: 14px; }
.magazine-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; grid-auto-rows: minmax(230px, auto); gap: 20px; }
.story-card { position: relative; overflow: hidden; padding: 28px; border-radius: 26px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); display: flex; flex-direction: column; justify-content: flex-end; }
.story-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 42%; background: linear-gradient(135deg, rgba(255,142,172,.25), rgba(140,118,232,.20)); pointer-events: none; }
.story-card > * { position: relative; z-index: 1; }
.story-card.featured { grid-row: span 2; min-height: 500px; background: linear-gradient(160deg, #fff 35%, #FFF0F6); }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.tag { padding: 5px 10px; border-radius: 999px; background: var(--soft-purple); color: var(--deep-purple); font-size: 12px; font-weight: 750; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.info-card { padding: 28px; border-radius: 24px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.info-card p { color: var(--muted); }
.info-card .card-number { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 15px; margin-bottom: 18px; background: var(--soft-pink); color: var(--berry); font-weight: 900; }
.timeline { position: relative; display: grid; gap: 18px; }
.timeline::before { content: ""; position: absolute; top: 12px; bottom: 12px; left: 20px; width: 2px; background: linear-gradient(var(--pink), var(--purple)); }
.timeline-item { position: relative; display: grid; grid-template-columns: 42px 1fr; gap: 18px; }
.timeline-dot { position: relative; z-index: 1; width: 42px; height: 42px; border: 6px solid var(--soft-pink); border-radius: 50%; background: var(--pink); }
.timeline-content { padding: 24px 28px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); }
.split-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.split-card { padding: 34px; border-radius: 28px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.split-card.pink { background: linear-gradient(145deg, #FFF0F6, #fff); }
.split-card.purple { background: linear-gradient(145deg, #F7F3FF, #fff); }
.check-list { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 11px; }
.check-list li { position: relative; padding-left: 28px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--berry); font-weight: 900; }
.app-showcase { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: center; padding: 46px; border-radius: 32px; background: linear-gradient(135deg, #FFF0F6, #F7F3FF); overflow: hidden; }
.app-visual { min-height: 360px; display: grid; place-items: center; position: relative; }
.app-orbit { width: 280px; height: 280px; border-radius: 50%; background: var(--gradient); opacity: .18; }
.app-device { position: absolute; width: 180px; height: 330px; border: 9px solid #3D2B34; border-radius: 34px; background: white; box-shadow: var(--shadow-strong); transform: rotate(5deg); }
.app-device::before { content: ""; position: absolute; inset: 26px 13px 13px; border-radius: 20px; background: linear-gradient(180deg, #FFF0F6 0 25%, #fff 25% 100%); }
.feedback-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feedback-card { padding: 26px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); }
.feedback-card::before { content: "“"; display: block; height: 34px; color: var(--coral); font-size: 42px; line-height: 1; font-weight: 900; }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--border); border-radius: 18px; background: var(--surface); overflow: hidden; }
summary { min-height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 22px; color: var(--title); font-weight: 800; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; flex: 0 0 auto; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; background: var(--soft-pink); color: var(--berry); }
details[open] summary::after { content: "−"; }
details p { padding: 0 22px 20px; margin: 0; color: var(--muted); }
.brand-story { display: grid; grid-template-columns: .8fr 1.2fr; gap: 38px; align-items: center; }
.brand-art { min-height: 330px; border-radius: 34px; background: linear-gradient(145deg, #FFD6E5, #E0D9FF); position: relative; overflow: hidden; }
.brand-art::before, .brand-art::after { content: ""; position: absolute; border-radius: 50%; background: rgba(255,255,255,.65); }
.brand-art::before { width: 190px; height: 190px; left: 35px; top: 45px; }
.brand-art::after { width: 120px; height: 120px; right: 30px; bottom: 34px; }
.page-hero { padding: 70px 0 52px; }
.page-hero-inner { padding: 46px; border-radius: 32px; background: linear-gradient(135deg, #FFF0F6, #F7F3FF); display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: center; }
.page-hero h1 { font-size: clamp(36px, 5vw, 60px); }
.page-hero-art { min-height: 250px; position: relative; border-radius: 28px; background: rgba(255,255,255,.65); overflow: hidden; }
.page-hero-art::before { content: ""; position: absolute; width: 180px; height: 180px; border-radius: 50%; background: var(--gradient); opacity: .24; left: 50%; top: 50%; transform: translate(-50%,-50%); }
.page-hero-art::after { content: "糖心"; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); color: var(--berry); font-weight: 900; font-size: 38px; letter-spacing: .12em; }
.content-prose { max-width: 820px; }
.content-prose p { color: var(--muted); }
.prose-card { padding: 34px; border-radius: 26px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.step-list { counter-reset: steps; display: grid; gap: 18px; }
.step-item { counter-increment: steps; display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 24px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); }
.step-item::before { content: counter(steps); width: 54px; height: 54px; display: grid; place-items: center; border-radius: 18px; background: var(--gradient); color: white; font-weight: 900; }
.notice-bar { padding: 18px 22px; border-left: 4px solid var(--pink); border-radius: 0 18px 18px 0; background: var(--soft-pink); }
.link-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.link-cloud a { min-height: 46px; display: inline-flex; align-items: center; padding: 0 18px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--berry); font-weight: 750; }
.cta-band { padding: 40px; border-radius: 28px; background: var(--gradient); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 26px; }
.cta-band h2, .cta-band p { color: #fff; }
.cta-band .button { background: #fff; color: var(--berry); }
.site-footer { background: var(--footer); color: var(--footer-text); padding: 66px 0 calc(28px + env(safe-area-inset-bottom)); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-grid a { display: block; color: rgba(255,234,242,.78); margin: 8px 0; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { max-width: 330px; color: rgba(255,234,242,.72); }
.brand-footer { color: #fff; margin-bottom: 18px; }
.footer-bottom { margin-top: 42px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 30px; color: rgba(255,234,242,.65); font-size: 13px; }
.footer-bottom p { margin: 0; }
.menu-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(48,36,43,.42); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .22s ease, visibility .22s ease; padding-top: 102px; }
.menu-overlay.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.desktop-channel-panel { width: min(calc(100% - 40px), var(--container)); max-height: calc(100vh - 130px); overflow-y: auto; margin: 0 auto; padding: 30px; border-radius: 0 0 28px 28px; background: var(--surface); box-shadow: var(--shadow-strong); transform: translateY(-18px); transition: transform .22s ease; }
.menu-overlay.is-open .desktop-channel-panel { transform: translateY(0); }
.panel-head, .sheet-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.panel-head h2 { font-size: 30px; margin: 0; }
.close-button { min-height: 44px; padding: 0 16px; border: 1px solid var(--border); border-radius: 999px; background: var(--soft-pink); color: var(--berry); font-weight: 800; cursor: pointer; }
.channel-groups { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 26px; }
.channel-groups section { padding: 20px; border-radius: 20px; background: var(--soft-gray); }
.channel-groups h3 { font-size: 16px; color: var(--berry); }
.channel-groups a { display: block; padding: 12px; border-radius: 14px; }
.channel-groups a:hover { background: white; }
.channel-groups strong, .channel-groups span { display: block; }
.channel-groups span { color: var(--muted); font-size: 13px; }
.mobile-channel-sheet, .mobile-bottom-nav { display: none; }

@media (max-width: 1020px) {
    .main-nav { gap: 0; }
    .nav-link { padding-inline: 11px; }
    .nav-actions .button-ghost { display: none; }
    .hero-grid { grid-template-columns: 1fr .8fr; }
    .hero-side { grid-column: 1 / -1; grid-template-columns: 1fr 1fr; }
    .card-grid.four { grid-template-columns: repeat(2, 1fr); }
    .feedback-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1.5fr repeat(2, 1fr); }
    .channel-groups { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
    .container { width: min(calc(100% - 32px), var(--container)); }
    .top-note-inner { justify-content: center; min-height: 32px; }
    .top-note-links a:first-child { display: none; }
    .top-note-links { position: absolute; right: 16px; }
    .nav-wrap { min-height: 62px; grid-template-columns: 1fr auto 1fr; gap: 8px; }
    .main-nav, .nav-actions { display: none; }
    .mobile-menu-trigger { display: inline-flex; justify-self: start; min-height: 44px; align-items: center; padding: 0 12px; border: 0; border-radius: 12px; background: var(--soft-pink); color: var(--berry); font-weight: 800; cursor: pointer; }
    .mobile-experience { display: inline-flex; justify-self: end; min-height: 44px; align-items: center; padding: 0 14px; border-radius: 12px; background: var(--gradient); color: #fff; font-weight: 800; }
    .brand-mark { width: 34px; height: 34px; border-radius: 11px; }
    .brand-text { font-size: 16px; }
    .section { padding: 62px 0; }
    .section-tight { padding: 44px 0; }
    .section-heading { align-items: start; flex-direction: column; gap: 10px; }
    .hero { padding: 54px 0 64px; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-copy { text-align: left; }
    .phone-visual { width: 250px; }
    .hero-side { grid-column: auto; grid-template-columns: 1fr; }
    .hero-actions { gap: 12px; }
    .button { min-height: 46px; padding-inline: 18px; }
    .interest-scroll { grid-auto-columns: 76%; }
    .magazine-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
    .story-card, .story-card.featured { grid-row: auto; min-height: 300px; }
    .card-grid, .card-grid.two, .card-grid.four, .feedback-grid, .split-panel { grid-template-columns: 1fr; }
    .app-showcase, .brand-story, .page-hero-inner { grid-template-columns: 1fr; padding: 28px; }
    .app-showcase { gap: 24px; }
    .app-visual { min-height: 320px; }
    .page-hero { padding: 44px 0 34px; }
    .page-hero-art { min-height: 190px; }
    .cta-band { align-items: flex-start; flex-direction: column; padding: 28px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; }
    .site-footer { padding-bottom: calc(110px + env(safe-area-inset-bottom)); }
    .desktop-channel-panel { display: none; }
    .menu-overlay { padding: 0; display: flex; align-items: flex-end; }
    .mobile-channel-sheet { display: block; width: 100%; max-height: 85vh; overflow-y: auto; padding: 10px 16px calc(24px + env(safe-area-inset-bottom)); border-radius: 26px 26px 0 0; background: var(--surface); transform: translateY(105%); transition: transform .24s ease; }
    .menu-overlay.is-open .mobile-channel-sheet { transform: translateY(0); }
    .sheet-handle { width: 46px; height: 5px; border-radius: 99px; margin: 2px auto 14px; background: #E7DDE2; }
    .sheet-head { position: sticky; top: -10px; z-index: 2; padding: 10px 0 14px; background: var(--surface); }
    .mobile-channel-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .mobile-channel-list a { min-height: 48px; display: flex; align-items: center; padding: 0 16px; border-radius: 15px; background: var(--soft-gray); color: var(--title); font-weight: 700; }
    .mobile-bottom-nav { position: fixed; z-index: 1500; left: 0; right: 0; bottom: 0; min-height: 68px; display: grid; grid-template-columns: repeat(5, 1fr); padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); background: rgba(255,255,255,.96); border-top: 1px solid var(--border); box-shadow: 0 -10px 30px rgba(76,48,66,.08); backdrop-filter: blur(14px); }
    .mobile-bottom-nav a { min-height: 54px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; border-radius: 14px; color: var(--muted); font-size: 12px; font-weight: 700; }
    .mobile-bottom-nav a span { font-size: 18px; line-height: 1; }
    .mobile-bottom-nav a.is-active { color: var(--berry); background: var(--soft-pink); }
    .step-item { grid-template-columns: 46px 1fr; padding: 20px; }
    .step-item::before { width: 46px; height: 46px; border-radius: 15px; }
}

@media (max-width: 430px) {
    .top-note-inner { justify-content: flex-start; font-size: 12px; }
    .top-note-links { right: 12px; }
    .interest-scroll { grid-auto-columns: 84%; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .mobile-channel-list { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}