:root {
    --bg: #fff9fc; --surface: #ffffff; --soft-pink: #fff1f6; --soft-purple: #f6f3ff;
    --soft-gray: #f8f6f7; --ink: #31262c; --text: #51454c; --muted: #7c6e75;
    --light-text: #a2949b; --pink: #ff5c98; --berry: #d9467b; --peach: #ff96ad;
    --purple: #8b74e8; --deep-purple: #6250b0; --line: rgba(255,92,152,.15);
    --shadow: 0 14px 38px rgba(70,44,58,.08); --strong-shadow: 0 20px 48px rgba(217,70,123,.14);
    --gradient: linear-gradient(135deg,#ff96ad 0%,#ff5c98 50%,#8b74e8 100%);
    --header-height: 78px; --radius: 24px; --max: 1220px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 10000; padding: 10px 16px; border-radius: 12px; background: var(--ink); color: #fff; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid rgba(139,116,232,.45); outline-offset: 3px; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 900; min-height: var(--header-height); background: rgba(255,249,252,.92); border-bottom: 1px solid rgba(255,92,152,.1); backdrop-filter: blur(18px); }
.nav-shell { width: min(var(--max), calc(100% - 32px)); min-height: var(--header-height); margin: 0 auto; display: grid; grid-template-columns: 1fr auto 1fr auto; align-items: center; gap: 18px; }
.nav-side { display: flex; align-items: center; gap: clamp(12px,2vw,28px); white-space: nowrap; }
.nav-left { justify-content: flex-end; }
.nav-right { justify-content: flex-start; }
.desktop-nav a { min-height: 44px; display: inline-flex; align-items: center; position: relative; font-size: 14px; font-weight: 700; color: var(--muted); }
.desktop-nav a::after { content: ""; position: absolute; left: 15%; right: 15%; bottom: 4px; height: 3px; border-radius: 9px; background: var(--gradient); transform: scaleX(0); transition: transform .2s ease; pointer-events: none; }
.desktop-nav a:hover, .desktop-nav a.is-current { color: var(--ink); }
.desktop-nav a:hover::after, .desktop-nav a.is-current::after { transform: scaleX(1); }
.brand { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 10px; font-weight: 900; color: var(--ink); white-space: nowrap; }
.brand img { object-fit: contain; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 14px; background: var(--gradient); color: #fff; box-shadow: 0 9px 22px rgba(217,70,123,.22); }
.brand-text { font-size: 20px; letter-spacing: -.4px; }
.channel-button, .menu-button { width: 46px; height: 46px; border: 1px solid var(--line); background: var(--surface); border-radius: 50%; display: grid; place-content: center; gap: 4px; cursor: pointer; box-shadow: 0 8px 22px rgba(70,44,58,.06); }
.channel-button span, .menu-button span { width: 18px; height: 2px; border-radius: 8px; background: var(--ink); display: block; pointer-events: none; }
.channel-button:hover, .menu-button:hover { border-color: rgba(255,92,152,.35); transform: translateY(-1px); }
.mobile-actions { display: none; align-items: center; gap: 8px; }
.mini-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 17px; border-radius: 999px; color: #fff; background: var(--gradient); font-weight: 800; font-size: 14px; }
main { display: block; padding-top: var(--header-height); }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.section { padding: 76px 0; position: relative; }
.section-tight { padding: 50px 0; }
.section-soft { background: var(--soft-pink); }
.section-purple { background: var(--soft-purple); }
.section-title { max-width: 760px; margin-bottom: 30px; }
.section-title.center { text-align: center; margin-left: auto; margin-right: auto; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--berry); font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 25px; height: 2px; background: var(--gradient); border-radius: 8px; }
h1,h2,h3,h4 { color: var(--ink); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(40px,6vw,76px); letter-spacing: -2px; margin-bottom: 22px; }
h2 { font-size: clamp(28px,4vw,44px); letter-spacing: -1px; margin-bottom: 16px; }
h3 { font-size: 20px; margin-bottom: 10px; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(17px,2vw,21px); color: var(--muted); line-height: 1.9; }
.hero { min-height: calc(100vh - var(--header-height)); padding: 70px 0 42px; display: flex; align-items: center; overflow: hidden; }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero::before { width: 360px; height: 360px; background: rgba(255,150,173,.22); top: 10%; left: -140px; }
.hero::after { width: 440px; height: 440px; background: rgba(139,116,232,.14); right: -160px; bottom: 5%; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(180px,.7fr) minmax(440px,1.8fr) minmax(180px,.7fr); align-items: center; gap: clamp(20px,4vw,56px); }
.hero-side { padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,.72); box-shadow: var(--shadow); }
.hero-side p { color: var(--muted); margin: 0; font-size: 14px; }
.hero-center { text-align: center; }
.hero-brand { display: inline-flex; padding: 8px 14px; background: var(--surface); color: var(--berry); border: 1px solid var(--line); border-radius: 999px; font-weight: 900; margin-bottom: 20px; box-shadow: 0 8px 22px rgba(70,44,58,.06); }
.hero-actions, .button-row { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 23px; border-radius: 999px; font-weight: 900; line-height: 1; }
.button-primary { color: #fff; background: var(--gradient); box-shadow: 0 14px 30px rgba(217,70,123,.2); }
.button-secondary { background: var(--surface); border: 1px solid var(--line); color: var(--ink); }
.text-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--berry); font-weight: 900; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.hero-visual { grid-column: 1/-1; min-height: 290px; margin-top: 24px; border-radius: 34px; overflow: hidden; position: relative; background: linear-gradient(120deg,rgba(255,150,173,.82),rgba(255,92,152,.72) 45%,rgba(139,116,232,.78)); box-shadow: var(--strong-shadow); }
.hero-visual::before { content: ""; position: absolute; width: 50%; height: 140%; left: 8%; top: -20%; border-radius: 45%; background: rgba(255,255,255,.3); transform: rotate(18deg); }
.hero-visual::after { content: "生活有光 · 兴趣有声 · 交流有边界"; position: absolute; left: 7%; bottom: 12%; padding: 12px 18px; border: 1px solid rgba(255,255,255,.5); color: #fff; background: rgba(49,38,44,.12); backdrop-filter: blur(10px); border-radius: 999px; font-weight: 900; letter-spacing: .08em; }
.visual-cards { position: absolute; inset: 0; display: grid; grid-template-columns: repeat(3,1fr); align-items: center; gap: 24px; padding: 42px 8%; }
.visual-card { min-height: 145px; border: 1px solid rgba(255,255,255,.52); background: rgba(255,255,255,.22); backdrop-filter: blur(10px); border-radius: 25px; transform: rotate(-3deg); }
.visual-card:nth-child(2) { transform: translateY(-20px) rotate(2deg); }
.visual-card:nth-child(3) { transform: rotate(4deg); }
.index-grid, .card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.card { padding: 26px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.card p { color: var(--muted); }
.card .tag, .tag { display: inline-flex; padding: 6px 11px; border-radius: 999px; background: var(--soft-pink); color: var(--berry); font-size: 12px; font-weight: 900; margin-bottom: 14px; }
.story-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; }
.feature-story { min-height: 510px; display: flex; flex-direction: column; justify-content: flex-end; position: relative; overflow: hidden; background: linear-gradient(145deg,#fff3f7,#f5efff); }
.feature-story::before { content: ""; position: absolute; width: 280px; height: 280px; border-radius: 50%; right: -80px; top: -90px; background: rgba(255,92,152,.16); }
.feature-story > * { position: relative; z-index: 1; }
.mini-story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.mini-story { min-height: 245px; display: flex; flex-direction: column; justify-content: space-between; }
.gallery-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.gallery-card { overflow: hidden; padding: 0; }
.css-picture { min-height: 210px; position: relative; overflow: hidden; background: linear-gradient(135deg,#ffd5e2,#e5dcff); }
.css-picture::before, .css-picture::after { content: ""; position: absolute; border-radius: 999px; background: rgba(255,255,255,.55); transform: rotate(-24deg); }
.css-picture::before { width: 190px; height: 42px; left: -20px; bottom: 40px; }
.css-picture::after { width: 250px; height: 70px; right: -65px; top: 55px; }
.css-picture.alt2 { background: linear-gradient(135deg,#ffe5cf,#ffb8cc); }
.css-picture.alt3 { background: linear-gradient(135deg,#d9efff,#e1d9ff); }
.css-picture.alt4 { background: linear-gradient(135deg,#e0f6e7,#ffe1ea); }
.css-picture.alt5 { background: linear-gradient(135deg,#f9e6c5,#ffd1df); }
.css-picture.alt6 { background: linear-gradient(135deg,#e6e1ff,#ffd8e6); }
.gallery-copy { padding: 23px; }
.interest-cloud { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 28px; }
.interest-item { min-height: 170px; padding: 24px; border-radius: 22px; border: 1px solid var(--line); background: rgba(255,255,255,.8); }
.interest-item:nth-child(2n) { background: var(--soft-purple); }
.topic-list { display: grid; gap: 16px; }
.topic { padding: 25px 28px; border-radius: 22px; background: var(--surface); border-left: 5px solid var(--peach); box-shadow: var(--shadow); }
.topic:nth-child(2n) { border-left-color: var(--purple); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; }
.app-showcase { padding: 42px; border-radius: 34px; background: linear-gradient(135deg,#fff,#fff0f5 58%,#f1edff); box-shadow: var(--strong-shadow); }
.phone-art { width: min(360px,90%); aspect-ratio: 9/18; margin: 0 auto; border: 12px solid var(--ink); border-radius: 52px; background: linear-gradient(180deg,#fff,#fff3f7); box-shadow: 0 28px 56px rgba(49,38,44,.18); padding: 28px 18px; position: relative; overflow: hidden; }
.phone-art::before { content: ""; position: absolute; width: 40%; height: 18px; top: 9px; left: 30%; background: var(--ink); border-radius: 999px; }
.phone-screen-card { height: 22%; margin-bottom: 13px; border-radius: 16px; background: linear-gradient(135deg,#ffd2df,#dfd7ff); }
.phone-screen-card:nth-child(2) { height: 33%; background: linear-gradient(135deg,#fff0d9,#ffb9d0); }
.phone-screen-card:nth-child(3) { background: linear-gradient(135deg,#e5f2ff,#e9dfff); }
.principle-grid, .feedback-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; }
.feedback-grid { grid-template-columns: repeat(3,1fr); }
.principle-card { padding: 23px; border-radius: 22px; background: var(--surface); border: 1px solid var(--line); }
.principle-number { width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center; background: var(--gradient); color: #fff; font-weight: 900; margin-bottom: 16px; }
.safety-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.safety-card { padding: 34px; border-radius: 30px; background: var(--surface); box-shadow: var(--shadow); border: 1px solid var(--line); }
.safety-card ul, .content-article ul, .content-article ol { padding-left: 1.2em; }
.safety-card li, .content-article li { margin-bottom: 8px; }
.feedback-card { position: relative; padding-top: 44px; }
.feedback-card::before { content: "“"; position: absolute; top: 8px; left: 22px; color: var(--peach); font-size: 58px; font-weight: 900; line-height: 1; }
.faq-list { display: grid; gap: 12px; }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 0 20px; }
summary { min-height: 58px; display: flex; align-items: center; cursor: pointer; font-weight: 900; color: var(--ink); }
details p { padding: 0 0 18px; color: var(--muted); }
.page-hero { padding: 76px 0 48px; background: linear-gradient(180deg,#fff9fc,#fff1f6); overflow: hidden; position: relative; }
.page-hero::after { content: ""; position: absolute; width: 330px; height: 330px; border-radius: 50%; right: -120px; top: -100px; background: rgba(139,116,232,.12); pointer-events: none; }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(42px,6vw,68px); max-width: 900px; }
.page-hero .lead { max-width: 860px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; font-size: 13px; color: var(--muted); }
.breadcrumbs a { color: var(--berry); font-weight: 800; }
.content-layout { display: grid; grid-template-columns: minmax(0,1fr) 290px; gap: 32px; align-items: start; }
.content-article { min-width: 0; }
.content-article > section { margin-bottom: 26px; padding: 30px; background: var(--surface); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); }
.content-article > section:nth-child(2n) { background: linear-gradient(145deg,#fff,#fff7fa); }
.content-article h2 { font-size: clamp(25px,3vw,34px); }
.content-article h3 { margin-top: 22px; }
.sidebar { position: sticky; top: calc(var(--header-height) + 22px); display: grid; gap: 18px; }
.sidebar-card { padding: 22px; border-radius: 22px; background: var(--surface); border: 1px solid var(--line); }
.sidebar-card a { display: flex; min-height: 42px; align-items: center; border-bottom: 1px solid rgba(255,92,152,.1); font-weight: 800; color: var(--muted); }
.sidebar-card a:last-child { border-bottom: 0; }
.notice-box { padding: 20px 22px; border-radius: 18px; background: var(--soft-purple); border: 1px solid rgba(139,116,232,.16); }
.steps { counter-reset: step; display: grid; gap: 15px; }
.step { position: relative; padding: 22px 22px 22px 68px; border-radius: 20px; background: var(--soft-gray); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 34px; height: 34px; border-radius: 12px; display: grid; place-items: center; background: var(--gradient); color: #fff; font-weight: 900; }
.stateless-form { display: grid; gap: 14px; }
.stateless-form label { font-weight: 800; color: var(--ink); }
.stateless-form input, .stateless-form textarea, .stateless-form select { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 14px; background: #fff; padding: 11px 14px; color: var(--text); }
.stateless-form textarea { min-height: 140px; resize: vertical; }
.site-footer { background: #30252b; color: #ffeaf2; padding: 66px 0 calc(36px + env(safe-area-inset-bottom)); }
.footer-shell { width: min(var(--max),calc(100% - 32px)); margin: 0 auto; }
.brand-footer { justify-content: flex-start; color: #fff; }
.footer-brand { max-width: 520px; margin-bottom: 40px; }
.footer-brand p { color: rgba(255,234,242,.72); }
.footer-groups { display: grid; grid-template-columns: repeat(4,1fr); gap: 28px; }
.footer-groups h2 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-groups a { display: flex; min-height: 38px; align-items: center; color: rgba(255,234,242,.72); }
.footer-groups a:hover { color: #fff; }
.footer-note { display: flex; justify-content: space-between; gap: 30px; margin-top: 38px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.11); color: rgba(255,234,242,.62); font-size: 13px; }
.overlay, .mobile-overlay { position: fixed; inset: 0; z-index: 950; background: rgba(49,38,44,.28); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease,visibility .2s ease; }
.overlay.is-open, .mobile-overlay.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.channel-panel { position: fixed; left: 0; right: 0; top: var(--header-height); z-index: 970; max-height: calc(100vh - var(--header-height)); overflow-y: auto; padding: 34px max(16px,calc((100% - var(--max))/2)); background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line); box-shadow: var(--strong-shadow); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-18px); transition: .22s ease; }
.channel-panel.is-open { opacity: 1; visibility: visible; pointer-events: auto; transform: none; }
.channel-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 25px; }
.channel-head h2 { font-size: 30px; margin: 6px 0 0; }
.close-button { width: 46px; height: 46px; border: 1px solid var(--line); background: var(--surface); border-radius: 50%; cursor: pointer; font-size: 28px; line-height: 1; }
.channel-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.channel-grid section { min-width: 0; }
.channel-grid h3 { color: var(--berry); }
.channel-grid a { display: block; padding: 14px 0; border-bottom: 1px solid rgba(255,92,152,.1); }
.channel-grid strong, .channel-grid span { display: block; }
.channel-grid span { color: var(--muted); font-size: 13px; line-height: 1.6; margin-top: 4px; }
.mobile-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(88vw,390px); z-index: 980; background: #fff; transform: translateX(105%); visibility: hidden; pointer-events: none; transition: transform .25s ease,visibility .25s ease; overflow-y: auto; padding-bottom: env(safe-area-inset-bottom); }
.mobile-drawer.is-open { transform: none; visibility: visible; pointer-events: auto; }
.drawer-head { position: sticky; top: 0; z-index: 2; min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 12px 16px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.drawer-nav { padding: 12px 16px 36px; }
.drawer-nav a { min-height: 50px; display: flex; align-items: center; padding: 0 14px; border-bottom: 1px solid rgba(255,92,152,.1); font-weight: 800; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
    .desktop-nav { gap: 12px; }
    .desktop-nav a { font-size: 13px; }
    .nav-shell { gap: 10px; }
    .hero-grid { grid-template-columns: 1fr 2fr 1fr; gap: 20px; }
    .principle-grid { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 820px) {
    :root { --header-height: 68px; }
    body { padding-bottom: calc(70px + env(safe-area-inset-bottom)); }
    .nav-shell { grid-template-columns: 1fr auto; width: calc(100% - 24px); }
    .nav-shell > .brand { justify-content: flex-start; }
    .desktop-nav, .channel-button { display: none; }
    .mobile-actions { display: flex; }
    .hero { min-height: auto; padding: 52px 0 34px; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-center { order: 1; }
    .hero-side:first-child { order: 2; }
    .hero-side:nth-child(3) { order: 3; }
    .hero-visual { order: 4; grid-column: auto; min-height: 260px; }
    .visual-cards { padding: 38px 5%; gap: 10px; }
    .hero-visual::after { left: 5%; right: 5%; bottom: 8%; text-align: center; font-size: 12px; }
    .index-grid, .card-grid, .gallery-grid, .feedback-grid { grid-template-columns: repeat(2,1fr); }
    .story-layout, .split, .safety-grid, .content-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .interest-cloud { grid-template-columns: repeat(2,1fr); }
    .principle-grid { grid-template-columns: repeat(2,1fr); }
    .footer-groups { grid-template-columns: repeat(2,1fr); }
    .footer-note { flex-direction: column; gap: 6px; }
    .mobile-bottom-nav { position: fixed; z-index: 880; left: 10px; right: 10px; bottom: max(10px,env(safe-area-inset-bottom)); height: 62px; display: grid; grid-template-columns: repeat(4,1fr); align-items: stretch; background: rgba(255,255,255,.96); border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 14px 36px rgba(49,38,44,.14); backdrop-filter: blur(16px); overflow: hidden; }
    .mobile-bottom-nav a { min-width: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: 11px; font-weight: 800; color: var(--muted); }
    .mobile-bottom-nav a span { font-size: 18px; line-height: 1; }
    .mobile-bottom-nav a.is-current { color: var(--berry); background: var(--soft-pink); }
    .page-hero { padding: 58px 0 36px; }
    .app-showcase { padding: 26px; }
}
@media (max-width: 560px) {
    .section { padding: 56px 0; }
    .container { width: calc(100% - 32px); }
    h1 { letter-spacing: -1px; }
    .brand-text { font-size: 18px; }
    .brand-mark { width: 34px; height: 34px; border-radius: 12px; }
    .mini-cta { padding: 0 14px; }
    .menu-button { width: 44px; height: 44px; }
    .hero-actions, .button-row { align-items: stretch; }
    .hero-actions .button, .button-row .button { flex: 1 1 160px; }
    .visual-cards { grid-template-columns: 1fr 1fr; }
    .visual-card { min-height: 100px; }
    .visual-card:nth-child(3) { display: none; }
    .index-grid, .card-grid, .gallery-grid, .feedback-grid, .mini-story-grid, .interest-cloud, .principle-grid, .footer-groups { grid-template-columns: 1fr; }
    .feature-story { min-height: 400px; }
    .mini-story { min-height: auto; }
    .content-article > section, .card { padding: 22px; }
    .footer-note { margin-bottom: 62px; }
    .phone-art { border-width: 9px; border-radius: 42px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}