:root {
    --bg: #080d18;
    --surface: #111a2b;
    --surface-high: #162238;
    --line: rgba(255,255,255,.1);
    --line-strong: rgba(255,255,255,.18);
    --text: #f3f7f6;
    --muted: #9ca9b6;
    --muted-strong: #bdc7d0;
    --accent: #78f2c3;
    --accent-soft: rgba(120,242,195,.1);
    --radius: 28px;
    --shadow: 0 28px 90px rgba(0,0,0,.3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--text);
    background: radial-gradient(900px circle at 80% 8%, var(--accent-soft), transparent 58%), var(--bg);
    font-family: "DM Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}
body.app-detail--memo { --accent: #a991ff; --accent-soft: rgba(169,145,255,.12); }
body.app-detail--cubox { --accent: #ffbd78; --accent-soft: rgba(255,189,120,.11); }
body.app-detail--sparrow { --accent: #80c8ff; --accent-soft: rgba(128,200,255,.11); }
body.app-detail--cryptobox { --accent: #c19cff; --accent-soft: rgba(193,156,255,.11); }
body.app-detail--uru { --accent: #74e3d2; --accent-soft: rgba(116,227,210,.11); }
body.app-detail--wukong { --accent: #74cfff; --accent-soft: rgba(116,207,255,.11); }
body.app-detail--dongjian { --accent: #ff9a64; --accent-soft: rgba(255,154,100,.12); }
body.app-detail--family_tree { --accent: #f4c978; --accent-soft: rgba(244,201,120,.11); }
a { color: inherit; }
img { display: block; max-width: 100%; }
button { color: inherit; font: inherit; }
.page-shell { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }

.skip-link {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 1000;
    padding: 10px 14px;
    color: #07100d;
    background: var(--accent);
    border-radius: 10px;
    font-weight: 700;
    transform: translateY(-160%);
    transition: transform .2s;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,.07);
    background: rgba(8,13,24,.82);
    backdrop-filter: blur(18px) saturate(130%);
    -webkit-backdrop-filter: blur(18px) saturate(130%);
}
.nav-shell { min-height: 72px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 19px; font-weight: 750; letter-spacing: -.04em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 11px; color: #07130f; background: var(--accent); box-shadow: 0 0 30px var(--accent-soft); }
.nav-shell > nav { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.nav-shell > nav a, .nav-shell > nav button { padding: 7px 0; border: 0; color: var(--muted-strong); background: transparent; text-decoration: none; font-size: 13px; cursor: pointer; }
.nav-shell > nav a:hover, .nav-shell > nav button:hover { color: var(--text); }
.nav-shell .nav-launch { padding: 9px 15px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--text); }

.hero { padding: 150px 0 104px; border-bottom: 1px solid var(--line); }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(330px, .65fr); align-items: center; gap: 90px; }
.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 38px; color: var(--muted); font-size: 12px; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); }
.eyebrow, .section-index { margin: 0 0 16px; color: var(--accent); font-size: 10px; font-weight: 750; letter-spacing: .17em; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(46px, 6.5vw, 78px); line-height: 1.04; letter-spacing: -.065em; font-weight: 620; }
.hero-intro { max-width: 720px; margin: 28px 0 0; color: var(--muted-strong); font-size: 17px; line-height: 1.9; }
.access-notice {
    max-width: 720px;
    display: flex;
    flex-wrap: wrap;
    gap: 5px 12px;
    margin: 24px 0 0;
    padding: 15px 17px;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--accent);
    border-radius: 13px;
    background: var(--accent-soft);
    font-size: 13px;
    line-height: 1.7;
}
.access-notice strong { color: var(--accent); }
.access-notice span { color: var(--muted-strong); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 27px 0 0; padding: 0; list-style: none; }
.tag-list li { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 11px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 21px; border: 1px solid transparent; border-radius: 13px; text-decoration: none; font-size: 14px; font-weight: 700; transition: transform .2s, border-color .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #07120e; background: var(--accent); box-shadow: 0 12px 38px var(--accent-soft); }
.button-secondary { border-color: var(--line-strong); background: rgba(255,255,255,.025); }
.button-secondary:hover { background: rgba(255,255,255,.06); }
.hero-art { position: relative; min-height: 410px; display: grid; place-items: center; align-content: center; gap: 18px; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 38px; background: linear-gradient(145deg, rgba(255,255,255,.06), rgba(255,255,255,.015)); box-shadow: var(--shadow); }
.hero-art::before { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: var(--accent); opacity: .1; filter: blur(42px); }
.hero-orbit { position: absolute; width: 290px; height: 290px; border: 1px dashed rgba(255,255,255,.13); border-radius: 50%; }
.app-icon { position: relative; z-index: 1; width: 174px; height: 174px; display: grid; place-items: center; padding: 12px; border: 1px solid rgba(255,255,255,.24); border-radius: 42px; background: rgba(255,255,255,.96); box-shadow: 0 25px 70px rgba(0,0,0,.32); transform: rotate(-3deg); }
.app-icon img { width: 100%; height: 100%; object-fit: contain; }
.hero-art strong, .hero-art > span:last-child { position: relative; z-index: 1; }
.hero-art strong { font-size: 24px; letter-spacing: -.04em; }
.hero-art > span:last-child { color: var(--muted); font-size: 10px; letter-spacing: .15em; text-transform: uppercase; }

.content-section { padding: 100px 0; border-bottom: 1px solid var(--line); }
.split-heading { display: grid; grid-template-columns: minmax(250px,.72fr) 1fr; gap: 90px; align-items: start; }
.section-heading { max-width: 670px; margin-bottom: 44px; }
.content-section h2 { margin: 0; font-size: clamp(34px, 4.6vw, 54px); line-height: 1.08; letter-spacing: -.055em; }
.audience-list { display: grid; gap: 0; margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.audience-list li { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--line); color: var(--muted-strong); font-size: 17px; line-height: 1.65; }
.audience-list span { color: var(--accent); font-size: 10px; letter-spacing: .12em; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-grid article { min-height: 280px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.feature-grid article > span { color: var(--accent); font-size: 10px; letter-spacing: .14em; }
.feature-grid h3 { margin: 76px 0 0; font-size: 25px; letter-spacing: -.04em; }
.feature-grid p { margin: 15px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.steps-section { background: linear-gradient(180deg, transparent, var(--accent-soft), transparent); }
.steps-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.steps-list li { min-height: 190px; padding: 28px; border-top: 1px solid var(--line-strong); background: rgba(255,255,255,.018); }
.steps-list span { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; color: #07120e; background: var(--accent); font-size: 12px; font-weight: 800; }
.steps-list p { margin: 45px 0 0; color: var(--muted-strong); font-size: 16px; line-height: 1.7; }
.section-cta { margin-top: 36px; }
.faq-list { display: grid; gap: 10px; }
.faq-list details { border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.018); }
.faq-list summary { padding: 21px 24px; cursor: pointer; font-size: 16px; font-weight: 650; }
.faq-list details[open] summary { color: var(--accent); }
.faq-list p { margin: 0; padding: 0 24px 24px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.related-grid > a { display: grid; grid-template-columns: 62px 1fr auto; align-items: center; gap: 18px; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); text-decoration: none; transition: transform .2s, border-color .2s; }
.related-grid > a:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.related-icon { width: 58px; height: 58px; display: grid; place-items: center; padding: 5px; border-radius: 16px; background: rgba(255,255,255,.95); }
.related-icon img { width: 100%; height: 100%; object-fit: contain; }
.related-grid > a > span:nth-child(2) { display: grid; gap: 5px; }
.related-grid small { color: var(--accent); font-size: 8px; letter-spacing: .13em; }
.related-grid strong { font-size: 18px; }
.related-grid strong + span { color: var(--muted); font-size: 12px; line-height: 1.55; }
.related-grid i { color: var(--accent); font-style: normal; }

footer { padding: 62px 0 48px; }
.footer-layout { display: grid; grid-template-columns: 1fr auto 1fr; align-items: start; gap: 40px; }
.footer-brand { text-decoration: none; font-size: 19px; font-weight: 750; letter-spacing: -.04em; }
.footer-brand span { color: var(--accent); }
.footer-layout > div p, .footer-layout > p { margin: 9px 0 0; color: var(--muted); font-size: 11px; }
.footer-layout > nav { display: flex; gap: 22px; }
.footer-layout > nav a { color: var(--muted-strong); text-decoration: none; font-size: 12px; }
.footer-layout > p { justify-self: end; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
@media (max-width: 820px) {
    .hero-layout, .split-heading { grid-template-columns: 1fr; gap: 52px; }
    .hero-art { min-height: 350px; }
    .feature-grid, .steps-list { grid-template-columns: 1fr; }
    .feature-grid article { min-height: 220px; }
    .feature-grid h3 { margin-top: 48px; }
    .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .page-shell { width: min(100% - 30px, 1120px); }
    .nav-shell { min-height: 64px; gap: 12px; }
    .brand > span:last-child { display: none; }
    .brand-mark { width: 32px; height: 32px; }
    .nav-shell > nav { gap: 14px; }
    .nav-shell > nav a, .nav-shell > nav button { font-size: 11px; }
    .nav-shell > nav > a:first-child { display: none; }
    .nav-shell .nav-launch { padding: 8px 11px; }
    .hero { padding: 106px 0 72px; }
    .hero-layout { gap: 38px; }
    .breadcrumbs { margin-bottom: 28px; }
    .hero h1 { font-size: 43px; }
    .hero-intro { font-size: 15px; line-height: 1.8; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .button { width: 100%; }
    .hero-art { min-height: 300px; border-radius: 28px; }
    .hero-orbit { width: 230px; height: 230px; }
    .app-icon { width: 132px; height: 132px; border-radius: 34px; }
    .content-section { padding: 72px 0; }
    .content-section h2 { font-size: 34px; }
    .audience-list li { font-size: 15px; }
    .feature-grid article { min-height: 210px; padding: 25px; border-radius: 22px; }
    .steps-list li { min-height: 165px; }
    .related-grid > a { grid-template-columns: 54px 1fr auto; padding: 19px; }
    .related-icon { width: 52px; height: 52px; }
    .related-grid strong + span { display: none; }
    .footer-layout { grid-template-columns: 1fr; gap: 25px; }
    .footer-layout > p { justify-self: start; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}