:root {
    --bg: #fff9fc;
    --surface: #ffffff;
    --pink-soft: #fff1f6;
    --purple-soft: #f6f3ff;
    --gray-soft: #f8f6f7;
    --title: #31262c;
    --text: #51454c;
    --muted: #7c6e75;
    --light: #a2949b;
    --pink: #ff5c98;
    --berry: #d9467b;
    --peach: #ff96ad;
    --purple: #8b74e8;
    --purple-deep: #6250b0;
    --border: rgba(255, 92, 152, .15);
    --shadow: 0 14px 38px rgba(70, 44, 58, .08);
    --shadow-strong: 0 20px 48px rgba(217, 70, 123, .14);
    --gradient: linear-gradient(135deg, #ff96ad 0%, #ff5c98 50%, #8b74e8 100%);
    --max: 1220px;
    --header-h: 82px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; color: var(--text); background: var(--bg); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.75; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: 360px; background: radial-gradient(circle at 12% 18%, rgba(255,150,173,.16), transparent 36%), radial-gradient(circle at 88% 12%, rgba(139,116,232,.13), transparent 33%); pointer-events: none; z-index: -1; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
:focus-visible { outline: 3px solid rgba(139,116,232,.55); outline-offset: 3px; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: 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; left: 16px; top: 10px; transform: translateY(-160%); z-index: 2000; background: var(--title); color: #fff; padding: 10px 16px; border-radius: 12px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: fixed; inset: 0 0 auto; z-index: 900; height: var(--header-h); background: rgba(255,249,252,.9); border-bottom: 1px solid rgba(255,92,152,.12); backdrop-filter: blur(18px); }
.nav-shell { width: min(calc(100% - 40px), var(--max)); height: 100%; margin: auto; display: grid; grid-template-columns: minmax(0,1fr) auto minmax(0,1fr) 50px; gap: 16px; align-items: center; }
.desktop-nav { display: flex; align-items: center; gap: 5px; min-width: 0; white-space: nowrap; }
.nav-left { justify-content: flex-end; }
.nav-right { justify-content: flex-start; }
.desktop-nav a { min-height: 44px; padding: 10px 13px; display: inline-flex; align-items: center; color: var(--muted); font-size: 15px; font-weight: 650; border-radius: 999px; }
.desktop-nav a:hover, .desktop-nav a.is-active { background: var(--surface); color: var(--berry); box-shadow: 0 8px 24px rgba(70,44,58,.06); }
.brand-logo { min-width: 138px; min-height: 52px; display: inline-flex; align-items: center; justify-content: center; }
.brand-logo-image { max-width: 136px; max-height: 46px; object-fit: contain; }
.brand-logo-text { font-size: 24px; line-height: 1; font-weight: 850; letter-spacing: -.8px; color: var(--title); }
.brand-logo-text span { color: var(--pink); margin-left: 3px; }
.desktop-menu-slot { display: flex; justify-content: flex-end; }
.round-menu-button { width: 46px; height: 46px; border: 0; border-radius: 50%; background: var(--surface); box-shadow: var(--shadow); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; }
.round-menu-button span:not(.sr-only) { width: 17px; height: 2px; background: var(--title); border-radius: 9px; pointer-events: none; }
.mobile-actions { display: none; align-items: center; gap: 10px; }
.mobile-experience { min-height: 44px; padding: 9px 17px; border-radius: 999px; background: var(--gradient); color: #fff; font-weight: 750; display: inline-flex; align-items: center; }
main { padding-top: var(--header-h); }
.hero { padding: 74px 0 42px; }
.hero-grid { display: grid; grid-template-columns: minmax(180px,.75fr) minmax(0,1.6fr) minmax(180px,.75fr); gap: 34px; align-items: center; }
.hero-center { text-align: center; }
.eyebrow { margin: 0 0 12px; color: var(--berry); font-size: 13px; line-height: 1.4; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.hero h1, .page-hero h1 { margin: 0; color: var(--title); font-size: clamp(42px,5.2vw,72px); line-height: 1.08; letter-spacing: -2.5px; }
.hero-description { max-width: 720px; margin: 24px auto 0; color: var(--muted); font-size: 17px; }
.hero-side { padding: 25px; border: 1px solid var(--border); border-radius: 26px; background: rgba(255,255,255,.76); box-shadow: var(--shadow); }
.hero-side h2 { margin: 0 0 8px; color: var(--title); font-size: 19px; }
.hero-side p { margin: 0; color: var(--muted); font-size: 14px; }
.hero-actions { margin-top: 28px; display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 12px; }
.btn { min-height: 48px; padding: 12px 22px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; font-weight: 780; white-space: nowrap; }
.btn-primary { color: #fff; background: var(--gradient); box-shadow: 0 14px 30px rgba(217,70,123,.22); }
.btn-secondary { color: var(--title); background: var(--surface); border: 1px solid var(--border); }
.text-link { color: var(--berry); font-weight: 750; display: inline-flex; align-items: center; gap: 7px; }
.hero-visual { width: min(calc(100% - 40px), var(--max)); margin: 36px auto 0; min-height: 340px; border-radius: 32px; overflow: hidden; box-shadow: var(--shadow-strong); }
.content-media img, .hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.media-fallback { position: relative; overflow: hidden; min-height: 280px; background: linear-gradient(135deg, #fff0f6 0%, #f8f1ff 48%, #ffe8ef 100%); border: 1px solid rgba(255,92,152,.14); }
.media-fallback::after { content: ""; position: absolute; width: 46%; aspect-ratio: 1; right: 8%; bottom: -25%; border-radius: 48% 52% 54% 46%; background: rgba(255,255,255,.6); transform: rotate(18deg); }
.media-orb { position: absolute; border-radius: 50%; filter: blur(1px); }
.orb-one { width: 180px; height: 180px; left: 9%; top: 17%; background: rgba(255,92,152,.16); }
.orb-two { width: 220px; height: 220px; right: 14%; top: 8%; background: rgba(139,116,232,.14); }
.media-line { position: absolute; width: 30%; height: 12px; border-radius: 999px; background: rgba(255,255,255,.78); transform: rotate(-7deg); }
.line-one { left: 19%; top: 44%; }.line-two { right: 20%; top: 58%; width: 24%; }
.media-caption { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); z-index: 2; color: var(--title); font-size: clamp(22px,4vw,44px); font-weight: 850; letter-spacing: -.8px; white-space: nowrap; }
.section { padding: 76px 0; }
.section-soft { background: var(--pink-soft); }
.section-purple { background: var(--purple-soft); }
.section-gray { background: var(--gray-soft); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.center { text-align: center; margin-inline: auto; }
.section-heading h2 { margin: 0 0 12px; color: var(--title); font-size: clamp(30px,4vw,48px); line-height: 1.16; letter-spacing: -1.5px; }
.section-heading > p:not(.eyebrow) { margin: 0; color: var(--muted); font-size: 16px; }
.index-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.index-card, .soft-card, .story-card, .topic-card, .feedback-card { background: var(--surface); border: 1px solid var(--border); border-radius: 24px; padding: 25px; box-shadow: var(--shadow); }
.index-card span { display: inline-flex; width: 42px; height: 42px; border-radius: 15px; align-items: center; justify-content: center; background: var(--pink-soft); color: var(--berry); font-weight: 850; }
.index-card h3, .soft-card h3, .story-card h3, .topic-card h3 { margin: 18px 0 8px; color: var(--title); font-size: 20px; }
.index-card p, .soft-card p, .story-card p, .topic-card p { margin: 0 0 15px; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; align-items: stretch; }
.feature-main { padding: 34px; border-radius: 30px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.feature-main h3 { margin: 0 0 12px; color: var(--title); font-size: 30px; line-height: 1.25; }
.feature-main p { margin: 0 0 16px; }
.story-stack { display: grid; gap: 16px; }
.story-card.compact { padding: 20px; }
.story-card.compact h3 { margin-top: 0; font-size: 18px; }
.tag { display: inline-flex; padding: 5px 11px; border-radius: 999px; background: var(--pink-soft); color: var(--berry); font-size: 12px; font-weight: 800; }
.gallery-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.gallery-card { overflow: hidden; background: var(--surface); border: 1px solid var(--border); border-radius: 25px; box-shadow: var(--shadow); }
.gallery-card .content-media { min-height: 210px; border-radius: 0; }
.gallery-copy { padding: 22px; }
.gallery-copy h3 { margin: 0 0 8px; color: var(--title); font-size: 20px; }
.gallery-copy p { margin: 0 0 15px; color: var(--muted); }
.interest-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.interest-item { padding: 22px; border-radius: 22px; background: rgba(255,255,255,.86); border: 1px solid var(--border); }
.interest-item h3 { margin: 0 0 9px; color: var(--title); font-size: 18px; }
.interest-item p { margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.topic-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 14px; }
.topic-card { padding: 22px; }
.topic-card h3 { margin-top: 0; font-size: 17px; }
.journal-layout, .split-layout, .app-layout, .security-grid, .about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.journal-notes { display: grid; gap: 15px; }
.note-card { padding: 22px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.note-card h3 { margin: 0 0 7px; color: var(--title); }
.note-card p { margin: 0; color: var(--muted); }
.discovery-grid, .principle-grid, .feedback-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.app-visual, .about-visual, .security-visual { min-height: 420px; border-radius: 30px; overflow: hidden; }
.service-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 24px 0; }
.service-item { padding: 18px; border: 1px solid var(--border); border-radius: 19px; background: rgba(255,255,255,.75); }
.service-item h3 { margin: 0 0 6px; color: var(--title); font-size: 17px; }
.service-item p { margin: 0; color: var(--muted); font-size: 14px; }
.principle-card { padding: 24px; border-left: 4px solid var(--pink); background: var(--surface); border-radius: 0 20px 20px 0; box-shadow: var(--shadow); }
.principle-card h3 { margin: 0 0 8px; color: var(--title); }
.principle-card p { margin: 0; color: var(--muted); }
.security-card { padding: 30px; border-radius: 28px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.security-card ul, .clean-list { margin: 18px 0; padding-left: 20px; }
.security-card li, .clean-list li { margin: 8px 0; }
.feedback-card p { margin: 0; color: var(--text); }
.feedback-card::before { content: "“"; display: block; color: var(--peach); font-size: 44px; line-height: .8; font-family: Georgia, serif; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; overflow: hidden; box-shadow: 0 10px 28px rgba(70,44,58,.05); }
.faq-list summary { list-style: none; min-height: 58px; padding: 16px 52px 16px 20px; cursor: pointer; position: relative; font-weight: 780; color: var(--title); }
.faq-list summary::-webkit-details-marker { display:none; }
.faq-list summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--berry); font-size: 24px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-answer { padding: 0 20px 18px; color: var(--muted); }
.faq-answer p { margin: 0; }
.page-hero { padding: 74px 0 52px; }
.page-hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center; }
.page-hero h1 { font-size: clamp(42px,6vw,68px); }
.page-hero .lead { max-width: 760px; color: var(--muted); font-size: 17px; margin: 22px 0 0; }
.page-visual { min-height: 330px; border-radius: 30px; overflow: hidden; }
.content-grid-2, .content-grid-3, .step-grid { display: grid; gap: 20px; }
.content-grid-2 { grid-template-columns: repeat(2,1fr); }
.content-grid-3, .step-grid { grid-template-columns: repeat(3,1fr); }
.article-card { padding: 28px; background: var(--surface); border-radius: 24px; border: 1px solid var(--border); box-shadow: var(--shadow); }
.article-card h2, .article-card h3 { margin-top: 0; color: var(--title); }
.article-card p:last-child { margin-bottom: 0; }
.long-copy { color: var(--text); }
.long-copy p { margin: 0 0 18px; }
.callout { padding: 24px 26px; border-radius: 22px; background: var(--purple-soft); border: 1px solid rgba(139,116,232,.16); }
.callout strong { color: var(--purple-deep); }
.timeline { position: relative; display: grid; gap: 18px; }
.timeline::before { content: ""; position: absolute; left: 23px; top: 14px; bottom: 14px; width: 2px; background: rgba(255,92,152,.2); }
.timeline-item { position: relative; padding: 22px 24px 22px 66px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); }
.timeline-item::before { content: attr(data-step); position: absolute; left: 10px; top: 20px; width: 28px; height: 28px; border-radius: 50%; background: var(--gradient); color: #fff; display: grid; place-items: center; font-size: 12px; font-weight: 800; z-index: 1; }
.timeline-item h3 { margin: 0 0 7px; color: var(--title); }
.timeline-item p { margin: 0; color: var(--muted); }
.related-links { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.related-links a { min-height: 66px; padding: 15px 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); font-weight: 760; }
.related-links a:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.notice-list { display: grid; gap: 14px; }
.notice-item { padding: 22px; border-radius: 22px; background: var(--surface); border: 1px solid var(--border); }
.notice-item h3 { margin: 0 0 7px; color: var(--title); }
.notice-item p { margin: 0; color: var(--muted); }
.form-guide { display: grid; grid-template-columns: .9fr 1.1fr; gap: 30px; }
.check-list { display: grid; gap: 12px; }
.check-list div { padding: 18px 20px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); }
.check-list strong { display:block; color: var(--title); margin-bottom: 4px; }
.site-footer { background: #30252b; color: #ffeaf2; padding: 70px 0 24px; }
.footer-main { display: grid; grid-template-columns: 1.4fr repeat(4,1fr); gap: 32px; }
.footer-brand p { margin: 18px 0 0; max-width: 340px; color: rgba(255,234,242,.72); }
.footer-logo { display: inline-flex; min-height: 48px; align-items: center; }
.footer-logo .brand-logo-text { color: #fff; }
.footer-group h2 { margin: 0 0 14px; font-size: 15px; color: #fff; }
.footer-group a { display: block; padding: 5px 0; color: rgba(255,234,242,.74); font-size: 14px; }
.footer-group a:hover { color: #fff; }
.footer-bottom { margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; gap: 30px; color: rgba(255,234,242,.64); font-size: 13px; }
.footer-bottom p { margin: 0; }
.site-overlay { position: fixed; inset: 0; background: rgba(48,37,43,.36); backdrop-filter: blur(3px); z-index: 950; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .22s ease, visibility .22s ease; }
.site-overlay.is-visible { opacity: 1; visibility: visible; pointer-events: auto; }
.channel-panel { position: fixed; left: 0; right: 0; top: var(--header-h); max-height: calc(100vh - var(--header-h)); overflow-y: auto; background: rgba(255,249,252,.98); z-index: 1000; transform: translateY(-110%); visibility: hidden; pointer-events: none; transition: transform .28s ease, visibility .28s ease; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-strong); }
.channel-panel.is-open { transform: translateY(0); visibility: visible; pointer-events: auto; }
.channel-panel-inner { padding-block: 32px 42px; }
.panel-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.panel-top h2 { margin: 0; color: var(--title); font-size: 30px; }
.panel-close { width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--surface); box-shadow: var(--shadow); cursor: pointer; font-size: 28px; line-height: 1; }
.channel-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.channel-column h3 { margin: 0 0 12px; color: var(--berry); font-size: 14px; }
.channel-column a { display: block; padding: 12px 0; border-bottom: 1px solid rgba(255,92,152,.1); }
.channel-column b { display: block; color: var(--title); font-size: 15px; }
.channel-column span { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; line-height: 1.55; }
.mobile-drawer { position: fixed; top: 0; right: 0; width: min(88vw,390px); height: 100dvh; z-index: 1100; background: var(--bg); transform: translateX(105%); visibility: hidden; pointer-events: none; transition: transform .28s ease, visibility .28s ease; overflow-y: auto; box-shadow: -20px 0 50px rgba(70,44,58,.16); }
.mobile-drawer.is-open { transform: translateX(0); visibility: visible; pointer-events: auto; }
.mobile-drawer-head { position: sticky; top: 0; z-index: 2; padding: 16px; background: rgba(255,249,252,.94); backdrop-filter: blur(14px); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); }
.drawer-brand { min-height: 44px; display: inline-flex; align-items: center; }
.drawer-brand .brand-logo-image { max-width: 126px; }
.mobile-menu-links { padding: 10px 16px 40px; display: grid; }
.mobile-menu-links a { min-height: 48px; display: flex; align-items: center; border-bottom: 1px solid rgba(255,92,152,.1); color: var(--title); font-weight: 650; }
html.menu-open { overflow: hidden; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1060px) {
    .desktop-nav a { padding-inline: 9px; font-size: 14px; }
    .topic-grid { grid-template-columns: repeat(3,1fr); }
    .interest-grid { grid-template-columns: repeat(2,1fr); }
    .footer-main { grid-template-columns: 1.4fr repeat(2,1fr); }
}
@media (max-width: 860px) {
    :root { --header-h: 70px; }
    .container { width: min(calc(100% - 32px), var(--max)); }
    .site-header { height: var(--header-h); }
    .nav-shell { width: calc(100% - 28px); grid-template-columns: 1fr auto; }
    .desktop-nav, .desktop-menu-slot { display: none; }
    .brand-logo { justify-content: flex-start; min-width: 0; }
    .mobile-actions { display: flex; }
    .hero { padding-top: 48px; }
    .hero-grid { grid-template-columns: 1fr; gap: 18px; }
    .hero-center { order: -1; }
    .hero h1, .page-hero h1 { font-size: clamp(38px,10vw,56px); letter-spacing: -1.8px; }
    .hero-side { padding: 20px; }
    .hero-visual { width: calc(100% - 32px); min-height: 260px; margin-top: 24px; border-radius: 24px; }
    .media-caption { font-size: 28px; }
    .section { padding: 58px 0; }
    .index-grid, .gallery-grid, .discovery-grid, .principle-grid, .feedback-grid, .content-grid-3, .step-grid { grid-template-columns: repeat(2,1fr); }
    .feature-grid, .journal-layout, .split-layout, .app-layout, .security-grid, .about-layout, .page-hero-inner, .form-guide { grid-template-columns: 1fr; }
    .page-hero-visual { order: 2; }
    .page-visual, .app-visual, .about-visual, .security-visual { min-height: 300px; }
    .topic-grid { grid-template-columns: repeat(2,1fr); }
    .related-links { grid-template-columns: repeat(2,1fr); }
    .channel-panel { display: none; }
    .footer-main { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .site-footer { padding-bottom: 110px; }
    .mobile-bottom-nav { position: fixed; left: max(10px, env(safe-area-inset-left)); right: max(10px, env(safe-area-inset-right)); bottom: max(10px, env(safe-area-inset-bottom)); z-index: 880; min-height: 64px; padding: 7px; display: grid; grid-template-columns: repeat(4,1fr); background: rgba(255,255,255,.94); border: 1px solid var(--border); border-radius: 22px; box-shadow: 0 18px 40px rgba(70,44,58,.18); backdrop-filter: blur(18px); }
    .mobile-bottom-nav a { min-height: 50px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; border-radius: 16px; color: var(--muted); }
    .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 { background: var(--pink-soft); color: var(--berry); }
}
@media (max-width: 600px) {
    .hero-description, .page-hero .lead { font-size: 15px; }
    .index-grid, .gallery-grid, .discovery-grid, .principle-grid, .feedback-grid, .content-grid-2, .content-grid-3, .step-grid, .topic-grid, .interest-grid, .related-links { grid-template-columns: 1fr; }
    .service-list { grid-template-columns: 1fr; }
    .section-heading h2 { font-size: 31px; }
    .feature-main { padding: 24px; }
    .footer-main { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; gap: 12px; }
    .media-caption { white-space: normal; width: 80%; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}