:root {
  --ink: #10182f;
  --ink-soft: #253252;
  --night: #0b1230;
  --night-2: #121c43;
  --violet: #7d5cff;
  --violet-soft: #ece9ff;
  --gold: #f4c96b;
  --cyan: #67d5d0;
  --paper: #f7f8fc;
  --line: #dfe4f0;
  --muted: #65708c;
  --white: #fff;
  --shadow: 0 18px 50px rgba(16, 24, 47, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 18, 48, .94);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(16px);
}
.nav-wrap { width: min(1160px, calc(100% - 40px)); margin: auto; min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: #fff; font-weight: 700; letter-spacing: .04em; }
.brand img { width: 42px; height: 42px; object-fit: cover; object-position: left center; border-radius: 10px; }
.brand-name { font-size: 18px; }
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a { color: #cbd3ef; padding: 9px 14px; border-radius: 8px; font-size: 14px; transition: .2s ease; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: #fff; background: rgba(125, 92, 255, .24); }
.nav-toggle { display: none; border: 1px solid rgba(255,255,255,.3); background: transparent; color: #fff; border-radius: 8px; padding: 7px 10px; font-size: 20px; }
.hero { position: relative; overflow: hidden; background: radial-gradient(circle at 82% 18%, rgba(103, 213, 208, .23), transparent 28%), linear-gradient(135deg, #0b1230 0%, #182454 64%, #242e66 100%); color: #fff; }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; background: rgba(244, 201, 107, .55); box-shadow: 0 0 18px rgba(244,201,107,.8); }
.hero::before { width: 4px; height: 4px; top: 24%; left: 14%; }
.hero::after { width: 6px; height: 6px; top: 32%; right: 18%; }
.hero-inner { width: min(1160px, calc(100% - 40px)); margin: auto; padding: 84px 0 92px; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr); align-items: center; gap: 70px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--gold); letter-spacing: .12em; text-transform: uppercase; font-size: 12px; font-weight: 700; }
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--gold); }
h1 { margin: 16px 0 18px; font-size: clamp(38px, 6vw, 72px); line-height: 1.16; letter-spacing: .02em; }
.hero h1 { max-width: 620px; }
.hero-intro { max-width: 600px; margin: 0 0 28px; color: #d8def4; font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; border-radius: 8px; padding: 10px 19px; font-weight: 700; border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 25px rgba(0,0,0,.18); }
.button.button-primary { color: #fff; background: #087f78; border-color: #087f78; box-shadow: 0 8px 20px rgba(8, 127, 120, .24); }
.button.button-primary:hover { color: #fff; background: #066a65; border-color: #066a65; }
.button-ghost { color: #fff; border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.07); }
.hero-note { display: block; margin-top: 14px; color: #aeb9df; font-size: 12px; }
.hero-preview { position: relative; width: min(100%, 330px); margin: 0 auto; padding: 12px 12px 42px; border: 1px solid rgba(255,255,255,.22); border-radius: 18px; background: rgba(255,255,255,.08); box-shadow: 0 26px 70px rgba(0,0,0,.3); transform: rotate(3deg); }
.hero-preview::before { content: ""; position: absolute; width: 12px; height: 12px; top: 24px; right: 25px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 20px var(--cyan); }
.hero-preview img { width: 100%; aspect-ratio: 268 / 476; object-fit: cover; border-radius: 10px; }
.hero-preview figcaption { position: absolute; left: 20px; bottom: 11px; color: #d8def4; font-size: 12px; }
.section { width: min(1160px, calc(100% - 40px)); margin: auto; padding: 86px 0; }
.section-dark { width: 100%; background: var(--night); color: #fff; }
.section-dark > .section { padding-top: 80px; padding-bottom: 80px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 30px; }
.section-heading h2, .section > h2 { margin: 0; font-size: clamp(27px, 4vw, 40px); line-height: 1.25; }
.section-heading .section-link { color: var(--violet); font-weight: 700; font-size: 14px; white-space: nowrap; }
.section-dark .section-heading .section-link { color: var(--gold); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { padding: 25px; border: 1px solid var(--line); background: #fff; border-radius: 10px; box-shadow: 0 8px 30px rgba(18, 28, 67, .04); }
.feature-card .icon { width: 38px; height: 38px; display: grid; place-items: center; margin-bottom: 15px; border-radius: 10px; background: var(--violet-soft); color: var(--violet); font-size: 19px; }
.feature-card h3 { margin: 0 0 7px; font-size: 18px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 28px; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.12); }
.stat { padding: 22px; background: rgba(255,255,255,.05); }
.stat strong { display: block; color: var(--gold); font-size: 30px; line-height: 1.2; }
.stat span { color: #c8d0ec; font-size: 13px; }
.screens { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; align-items: start; }
.screen-card { margin: 0; padding: 10px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.screen-card img { width: 100%; max-width: 400px; aspect-ratio: 268 / 476; object-fit: cover; border-radius: 8px; }
.screen-card figcaption { padding: 10px 2px 2px; color: var(--muted); font-size: 12px; }
.pathway { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.path-card { min-height: 220px; padding: 24px; border-radius: 10px; background: var(--night-2); border: 1px solid rgba(255,255,255,.12); display: flex; flex-direction: column; justify-content: space-between; }
.path-card .step { color: var(--gold); font-size: 12px; letter-spacing: .12em; font-weight: 700; }
.path-card h3 { margin: 22px 0 8px; font-size: 21px; }
.path-card p { margin: 0; color: #c8d0ec; font-size: 14px; }
.path-card a { color: var(--cyan); font-size: 13px; font-weight: 700; margin-top: 18px; }
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quote { margin: 0; padding: 24px; border-left: 3px solid var(--gold); background: #fff; box-shadow: 0 8px 28px rgba(18, 28, 67, .05); }
.quote p { margin: 0 0 15px; font-size: 15px; }
.quote cite { color: var(--muted); font-size: 12px; font-style: normal; }
.article-hero { background: var(--night); color: #fff; padding: 64px 0 58px; }
.article-hero .section { padding: 0; }
.article-hero h1 { max-width: 780px; font-size: clamp(35px, 5vw, 58px); margin-bottom: 10px; }
.article-hero .lede { max-width: 760px; margin: 0; color: #cbd3ef; font-size: 17px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(250px, .7fr); gap: 28px; align-items: start; }
.article-body { padding: 34px; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.article-body h2 { margin: 28px 0 12px; font-size: 25px; line-height: 1.35; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { margin: 0 0 16px; color: var(--ink-soft); }
.article-body ul { margin: 0 0 18px; padding-left: 22px; color: var(--ink-soft); }
.article-body li + li { margin-top: 8px; }
.side-card { position: sticky; top: 100px; padding: 22px; border-radius: 10px; background: var(--night); color: #fff; }
.side-card h2 { margin: 0 0 12px; font-size: 20px; }
.side-card a { display: block; padding: 9px 0; color: #cbd3ef; border-bottom: 1px solid rgba(255,255,255,.12); font-size: 14px; }
.side-card a:hover { color: var(--gold); }
.faq-list { display: grid; gap: 10px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.faq-question { width: 100%; border: 0; background: transparent; display: flex; justify-content: space-between; align-items: center; text-align: left; padding: 17px 20px; color: var(--ink); font: inherit; font-weight: 700; cursor: pointer; }
.faq-question span:last-child { color: var(--violet); font-size: 20px; transition: transform .2s ease; }
.faq-answer { display: none; padding: 0 20px 18px; color: var(--muted); font-size: 14px; }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
.download-band { margin-top: 24px; padding: 28px; border-radius: 10px; background: linear-gradient(135deg, #ece9ff, #d6f3f0); display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.download-band h2 { margin: 0 0 4px; font-size: 23px; }
.download-band p { margin: 0; color: var(--muted); font-size: 14px; }
.site-footer { background: #080d22; color: #9fa9c8; }
.footer-inner { width: min(1160px, calc(100% - 40px)); margin: auto; padding: 34px 0 28px; display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 28px; }
.footer-inner h2 { margin: 0 0 10px; color: #fff; font-size: 16px; }
.footer-inner p { margin: 0; font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 17px; align-content: start; }
.footer-links a { font-size: 13px; color: #cbd3ef; }
.footer-links a:hover { color: var(--gold); }
.disclaimer { padding-top: 18px; margin-top: 18px; border-top: 1px solid rgba(255,255,255,.12); color: #8792b3 !important; }
.copyright { width: min(1160px, calc(100% - 40px)); margin: auto; padding: 0 0 25px; color: #6f7a9a; font-size: 12px; }
.reveal { opacity: 0; transform: translateY(15px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 35px; padding: 64px 0 70px; }
  .hero-preview { width: min(72vw, 350px); }
  .feature-grid, .quote-grid { grid-template-columns: repeat(2, 1fr); }
  .screens { grid-template-columns: repeat(3, 1fr); }
  .pathway { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .side-card { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-wrap { min-height: 68px; width: min(100% - 28px, 1160px); }
  .nav-toggle { display: inline-flex; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 10px 14px 15px; flex-direction: column; align-items: stretch; background: var(--night); border-bottom: 1px solid rgba(255,255,255,.12); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 10px; }
  .hero-inner, .section, .footer-inner, .copyright { width: min(100% - 28px, 1160px); }
  h1 { font-size: 42px; }
  .hero-intro { font-size: 15px; }
  .section { padding: 62px 0; }
  .section-dark > .section { padding-top: 62px; padding-bottom: 62px; }
  .section-heading { align-items: start; flex-direction: column; gap: 10px; }
  .feature-grid, .quote-grid, .stats { grid-template-columns: 1fr; }
  .screens { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .article-body { padding: 23px 19px; }
  .download-band { flex-direction: column; align-items: start; }
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
}