:root {
    --bg: #FFF8FB;
    --surface: #FFFFFF;
    --soft-pink: #FFF0F5;
    --soft-purple: #F6F2FF;
    --soft-gray: #F8F6F7;
    --title: #33262D;
    --text: #51444B;
    --muted: #7C6C75;
    --faint: #A09199;
    --pink: #FF5F9F;
    --deep-pink: #D94A82;
    --coral: #FF92AA;
    --purple: #8973E6;
    --deep-purple: #6150AD;
    --border: rgba(255,95,159,0.16);
    --shadow: 0 14px 36px rgba(70,42,57,0.08);
    --strong-shadow: 0 20px 48px rgba(217,74,130,0.15);
    --header-height: 126px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
a, button { -webkit-tap-highlight-color: transparent; }
button, input, textarea, select { font: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 3px solid rgba(137,115,230,0.45);
    outline-offset: 3px;
}
img { display: block; max-width: 100%; height: auto; }
.shell { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }
.skip-link {
    position: fixed; left: 16px; top: 8px; z-index: 9999; padding: 10px 14px;
    background: var(--title); color: #fff; border-radius: 12px; transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 500; box-shadow: 0 8px 24px rgba(70,42,57,0.06); }
.utility-bar { height: 44px; background: rgba(255,248,251,0.96); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.utility-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand-copy { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-copy strong { color: var(--title); font-size: 15px; }
.brand-copy span { color: var(--muted); font-size: 13px; }
.utility-links { display: flex; align-items: center; gap: 6px; }
.utility-links a { min-height: 36px; padding: 5px 12px; display: inline-flex; align-items: center; color: var(--muted); border-radius: 999px; }
.utility-links a:hover, .utility-links a.is-active { color: var(--deep-pink); background: var(--soft-pink); }
.primary-bar { height: 82px; background: rgba(255,255,255,0.96); backdrop-filter: blur(16px); }
.primary-inner { height: 100%; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 24px; }
.primary-left { display: flex; align-items: center; gap: 14px; min-width: 0; }
.menu-toggle { min-height: 46px; border: 1px solid var(--border); background: var(--soft-pink); color: var(--title); border-radius: 16px; padding: 9px 14px; display: inline-flex; align-items: center; gap: 9px; cursor: pointer; }
.menu-lines { width: 20px; display: grid; gap: 4px; }
.menu-lines i { display: block; height: 2px; border-radius: 99px; background: var(--deep-pink); }
.brand-mark { min-width: 132px; height: 46px; display: inline-flex; align-items: center; justify-content: flex-start; font-size: 22px; font-weight: 800; color: var(--deep-pink); white-space: nowrap; }
.brand-mark img { max-width: 150px; max-height: 44px; object-fit: contain; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 4px; min-width: 0; overflow: hidden; }
.main-nav a { min-height: 44px; padding: 8px 15px; display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; border-radius: 14px; color: var(--muted); font-weight: 650; }
.main-nav a:hover, .main-nav a.is-active { color: var(--deep-pink); background: var(--soft-pink); }
.experience-button, .button-primary, .button-secondary {
    min-height: 46px; padding: 10px 20px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; font-weight: 750; white-space: nowrap;
}
.experience-button, .button-primary { color: #fff; background: linear-gradient(135deg, var(--coral) 0%, var(--pink) 52%, var(--purple) 100%); box-shadow: 0 12px 26px rgba(217,74,130,0.22); }
.button-secondary { color: var(--deep-pink); background: #fff; border: 1px solid var(--border); }
.site-main { padding-top: var(--header-height); }
.hero { position: relative; padding: 76px 0 58px; overflow: hidden; }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; filter: blur(2px); }
.hero::before { width: 360px; height: 360px; background: rgba(255,146,170,0.18); top: -120px; right: 2%; }
.hero::after { width: 280px; height: 280px; background: rgba(137,115,230,0.14); bottom: -120px; left: 7%; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr); gap: 52px; align-items: center; }
.eyebrow { margin: 0 0 12px; color: var(--deep-pink); font-weight: 800; letter-spacing: .08em; }
.hero h1, .page-hero h1 { margin: 0; color: var(--title); line-height: 1.15; font-size: clamp(38px, 5.4vw, 72px); letter-spacing: -.04em; }
.hero-lead { margin: 24px 0 0; max-width: 720px; font-size: 18px; color: var(--text); }
.hero-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-stage { min-height: 490px; border-radius: 32px; padding: 30px; background: linear-gradient(145deg, rgba(255,255,255,.98), rgba(255,240,245,.95)); box-shadow: var(--strong-shadow); border: 1px solid var(--border); display: grid; align-content: center; gap: 16px; }
.stage-card { border-radius: 24px; padding: 24px; background: #fff; box-shadow: var(--shadow); border: 1px solid rgba(255,95,159,.10); }
.stage-card:nth-child(2) { margin-left: 46px; background: var(--soft-purple); }
.stage-card:nth-child(3) { margin-right: 30px; background: var(--soft-pink); }
.stage-card strong { display: block; color: var(--title); font-size: 20px; margin-bottom: 7px; }
.section { padding: 70px 0; }
.section.alt { background: var(--surface); }
.section.soft { background: linear-gradient(180deg, var(--soft-pink), rgba(255,248,251,.35)); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-head h2 { margin: 0; color: var(--title); font-size: clamp(28px, 3.4vw, 44px); line-height: 1.2; }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 720px; }
.text-link { color: var(--deep-pink); font-weight: 750; white-space: nowrap; }
.index-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 14px; }
.index-card { min-height: 170px; padding: 20px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); display: flex; flex-direction: column; }
.index-card h3, .content-card h3, .topic-card h3, .feature-card h3 { margin: 0 0 9px; color: var(--title); }
.index-card p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
.index-card a { margin-top: auto; color: var(--deep-pink); font-weight: 700; }
.timeline { position: relative; display: grid; gap: 18px; }
.timeline::before { content: ""; position: absolute; left: 25px; top: 18px; bottom: 18px; width: 2px; background: linear-gradient(var(--pink), var(--purple)); opacity: .35; }
.timeline-item { position: relative; padding-left: 70px; }
.timeline-dot { position: absolute; left: 12px; top: 22px; width: 28px; height: 28px; border-radius: 50%; background: #fff; border: 7px solid var(--pink); box-shadow: 0 0 0 6px rgba(255,95,159,.12); }
.timeline-card { background: #fff; border: 1px solid var(--border); border-radius: 24px; padding: 24px; box-shadow: var(--shadow); }
.timeline-card h3 { margin: 0 0 8px; color: var(--title); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag { padding: 6px 11px; border-radius: 999px; background: var(--soft-pink); color: var(--deep-pink); font-size: 13px; font-weight: 700; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.content-card, .topic-card, .feature-card { padding: 26px; border-radius: 24px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.content-card p, .topic-card p, .feature-card p { margin: 0 0 14px; }
.content-card ul, .topic-card ul, .feature-card ul { margin: 0; padding-left: 1.2em; }
.content-card li + li, .topic-card li + li, .feature-card li + li { margin-top: 7px; }
.mosaic .content-card:nth-child(2), .mosaic .content-card:nth-child(5) { transform: translateY(18px); }
.tag-wall { display: flex; flex-wrap: wrap; gap: 12px; padding: 26px; border-radius: 26px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.tag-wall span { padding: 10px 16px; border-radius: 999px; background: linear-gradient(135deg, var(--soft-pink), var(--soft-purple)); color: var(--title); font-weight: 750; }
.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.callout { padding: 28px; border-radius: 26px; background: linear-gradient(135deg, var(--soft-pink), var(--soft-purple)); border: 1px solid var(--border); }
.callout h2, .callout h3 { margin-top: 0; color: var(--title); }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.step { counter-increment: step; position: relative; padding: 66px 22px 24px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.step::before { content: counter(step); position: absolute; top: 18px; left: 20px; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--title); color: #fff; font-weight: 800; }
.step h3 { margin: 0 0 8px; color: var(--title); }
.faq-list { display: grid; gap: 12px; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow); overflow: hidden; }
summary { min-height: 56px; padding: 16px 50px 16px 20px; cursor: pointer; color: var(--title); font-weight: 760; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--deep-pink); font-size: 24px; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 20px 20px; color: var(--text); }
.page-hero { padding: 62px 0 46px; background: linear-gradient(135deg, var(--soft-pink), var(--bg) 52%, var(--soft-purple)); border-bottom: 1px solid var(--border); }
.page-hero h1 { font-size: clamp(36px, 5vw, 62px); }
.page-hero p { max-width: 860px; margin: 20px 0 0; font-size: 18px; }
.page-nav { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }
.page-nav a { min-height: 42px; padding: 8px 14px; display: inline-flex; align-items: center; border-radius: 999px; background: rgba(255,255,255,.8); border: 1px solid var(--border); color: var(--deep-pink); font-weight: 700; }
.prose { font-size: 17px; }
.prose h2 { color: var(--title); margin-top: 0; }
.prose p { margin: 0 0 16px; }
.notice { border-left: 5px solid var(--purple); background: var(--soft-purple); padding: 22px 24px; border-radius: 0 20px 20px 0; }
.related-links { display: flex; flex-wrap: wrap; gap: 10px; }
.related-links a { min-height: 44px; display: inline-flex; align-items: center; padding: 9px 15px; border-radius: 999px; background: #fff; border: 1px solid var(--border); color: var(--deep-pink); font-weight: 700; }
.site-footer { background: #30242B; color: #FFEAF2; padding: 58px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; }
.site-footer h2 { margin: 0 0 14px; color: #fff; font-size: 18px; }
.site-footer p { margin: 0; color: rgba(255,234,242,.78); }
.site-footer nav { display: grid; align-content: start; gap: 8px; }
.site-footer nav a { min-height: 34px; color: rgba(255,234,242,.82); }
.site-footer nav a:hover { color: #fff; }
.footer-note { margin-top: 34px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 24px; }
.quick-rail { position: fixed; z-index: 320; right: 18px; top: 50%; transform: translateY(-50%); display: grid; gap: 8px; padding: 10px; background: rgba(255,255,255,.94); border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow); }
.quick-rail a { width: 88px; min-height: 42px; display: grid; place-items: center; padding: 7px 8px; border-radius: 12px; color: var(--muted); font-size: 13px; }
.quick-rail a:hover, .quick-rail a.is-active { background: var(--soft-pink); color: var(--deep-pink); }
.drawer-overlay { position: fixed; inset: 0; z-index: 800; background: rgba(51,38,45,.45); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease, visibility .2s ease; }
.channel-drawer { position: fixed; inset: 0 auto 0 0; z-index: 810; width: min(470px, 88vw); background: #fff; box-shadow: 24px 0 60px rgba(51,38,45,.22); transform: translateX(-102%); visibility: hidden; transition: transform .24s ease, visibility .24s ease; display: flex; flex-direction: column; }
.menu-open { overflow: hidden; }
.menu-open .drawer-overlay { opacity: 1; visibility: visible; pointer-events: auto; }
.menu-open .channel-drawer { transform: translateX(0); visibility: visible; }
.drawer-head { min-height: 78px; padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--border); }
.drawer-brand { min-height: 44px; display: inline-flex; align-items: center; color: var(--deep-pink); font-size: 22px; }
.drawer-brand img { max-width: 150px; max-height: 44px; object-fit: contain; }
.drawer-close { min-height: 44px; padding: 8px 14px; border: 1px solid var(--border); border-radius: 14px; background: var(--soft-pink); color: var(--deep-pink); cursor: pointer; }
.drawer-content { overflow-y: auto; padding: 18px; overscroll-behavior: contain; }
.drawer-content section + section { margin-top: 22px; }
.drawer-content h2 { margin: 0 0 10px; font-size: 15px; color: var(--muted); }
.drawer-content a { min-height: 64px; padding: 11px 13px; display: grid; align-content: center; border-radius: 16px; }
.drawer-content a:hover { background: var(--soft-pink); }
.drawer-content strong { color: var(--title); }
.drawer-content span { color: var(--muted); font-size: 13px; line-height: 1.55; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1380px) { .quick-rail { display: none; } }
@media (max-width: 1080px) {
    .main-nav a { padding-inline: 10px; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-stage { min-height: 0; }
    .index-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .card-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
    :root { --header-height: 72px; }
    .shell { width: min(100% - 32px, 1240px); }
    .utility-bar { display: none; }
    .primary-bar { height: 72px; }
    .primary-inner { grid-template-columns: 1fr auto 1fr; gap: 10px; }
    .primary-left { display: contents; }
    .menu-toggle { grid-column: 1; justify-self: start; width: 46px; padding: 0; justify-content: center; }
    .menu-toggle > span:last-child { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
    .brand-mark { grid-column: 2; justify-self: center; min-width: 0; max-width: 150px; justify-content: center; font-size: 20px; }
    .brand-mark img { max-width: 128px; max-height: 38px; }
    .main-nav { display: none; }
    .experience-button { grid-column: 3; justify-self: end; min-height: 44px; padding: 8px 14px; font-size: 14px; }
    .hero { padding: 48px 0 42px; }
    .hero-grid { gap: 30px; }
    .hero-stage { padding: 20px; border-radius: 26px; }
    .stage-card:nth-child(2), .stage-card:nth-child(3) { margin: 0; }
    .section { padding: 54px 0; }
    .section-head { align-items: start; flex-direction: column; }
    .index-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid, .card-grid.two, .card-grid.four, .split, .steps { grid-template-columns: 1fr; }
    .mosaic .content-card:nth-child(2), .mosaic .content-card:nth-child(5) { transform: none; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-note { flex-direction: column; }
    .site-footer { padding-bottom: calc(104px + env(safe-area-inset-bottom)); }
    .mobile-bottom-nav { position: fixed; inset: auto 0 0 0; z-index: 470; height: calc(72px + env(safe-area-inset-bottom)); padding: 7px 10px env(safe-area-inset-bottom); display: grid; grid-template-columns: repeat(5, 1fr); background: rgba(255,255,255,.97); border-top: 1px solid var(--border); box-shadow: 0 -10px 30px rgba(70,42,57,.08); }
    .mobile-bottom-nav a { min-height: 56px; display: grid; place-items: center; align-content: center; gap: 2px; color: var(--muted); font-size: 12px; border-radius: 14px; }
    .mobile-bottom-nav a span { width: 25px; height: 25px; border-radius: 9px; display: grid; place-items: center; background: var(--soft-gray); font-weight: 800; }
    .mobile-bottom-nav a.is-active { color: var(--deep-pink); background: var(--soft-pink); }
    .mobile-bottom-nav a.is-active span { background: #fff; }
    .page-hero { padding: 44px 0 34px; }
}
@media (max-width: 520px) {
    .shell { width: min(100% - 32px, 1240px); }
    .hero h1, .page-hero h1 { font-size: 38px; }
    .hero-lead, .page-hero p { font-size: 16px; }
    .hero-actions { align-items: stretch; flex-direction: column; }
    .hero-actions a { width: 100%; }
    .index-grid { grid-template-columns: 1fr; }
    .timeline-item { padding-left: 54px; }
    .timeline::before { left: 18px; }
    .timeline-dot { left: 5px; width: 26px; height: 26px; }
    .content-card, .topic-card, .feature-card, .timeline-card { padding: 22px; }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}