:root {
  --ink: #18152f;
  --muted: #6f6a7d;
  --paper: #fffaf6;
  --line: #eadfd8;
  --coral: #ff7b5c;
  --blue: #375dfb;
  --mint: #a5f1d5;
  --lavender: #e8e5ff;
  --shadow: 0 18px 45px rgba(24, 21, 47, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(255, 250, 246, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: .02em; }
.brand img { width: 60px; height: auto; }
.brand-word { font-size: 18px; color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 24px; font-size: 14px; font-weight: 700; }
.nav-links a { color: var(--muted); padding: 10px 0; border-bottom: 2px solid transparent; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); border-color: var(--coral); }
.nav-download { padding: 10px 16px !important; border: 0 !important; background: var(--coral); color: var(--ink) !important; border-radius: 10px; }
.menu-toggle { display: none; border: 0; background: var(--lavender); color: var(--ink); border-radius: 8px; width: 42px; height: 38px; font-size: 20px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); }
.eyebrow::before { content: ""; width: 22px; height: 3px; background: var(--coral); border-radius: 3px; }
.hero { padding: 84px 0 70px; background: var(--mint); position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; width: 240px; height: 240px; border-radius: 50%; background: var(--coral); right: -80px; top: -60px; opacity: .85; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 60px; position: relative; z-index: 1; }
h1, h2, h3 { line-height: 1.2; margin: 0; }
h1 { font-size: clamp(40px, 6vw, 74px); letter-spacing: -.04em; max-width: 670px; }
.hero-copy { margin: 24px 0 30px; color: #3c3850; max-width: 600px; font-size: 18px; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 10px; font-weight: 800; border: 2px solid var(--ink); transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 0 var(--ink); }
.btn-primary { background: var(--coral); color: var(--ink); }
.btn-secondary { background: transparent; }
.hero-note { display: flex; gap: 18px; margin-top: 22px; font-size: 13px; color: #4c485f; flex-wrap: wrap; }
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note b { color: var(--ink); }
.hero-art { justify-self: end; width: min(100%, 420px); padding: 20px; border: 2px solid var(--ink); border-radius: 22px; background: var(--paper); box-shadow: 12px 12px 0 var(--blue); transform: rotate(2deg); }
.hero-art img { width: 100%; max-height: 390px; object-fit: cover; object-position: top; border-radius: 12px; }
.hero-art figcaption { margin-top: 12px; font-size: 13px; font-weight: 700; color: var(--muted); }
.section { padding: 86px 0; }
.section-tint { background: #f3efff; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 34px; }
.section h2 { font-size: clamp(30px, 4vw, 48px); letter-spacing: -.03em; }
.section-kicker { max-width: 380px; color: var(--muted); margin: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { min-height: 240px; padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); box-shadow: 0 8px 20px rgba(24, 21, 47, .05); }
.feature-card:nth-child(2) { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.feature-card:nth-child(3) { background: var(--coral); border-color: var(--coral); }
.feature-num { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; margin-bottom: 28px; }
.feature-card:nth-child(2) .feature-num { background: var(--mint); color: var(--ink); }
.feature-card:nth-child(3) .feature-num { background: var(--paper); color: var(--ink); }
.feature-card h3 { font-size: 24px; margin-bottom: 12px; }
.feature-card p { margin: 0; color: var(--muted); }
.feature-card:nth-child(2) p { color: #d8d4e7; }
.feature-card:nth-child(3) p { color: #3d1b18; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); align-items: start; gap: 24px; }
.shot { margin: 0; }
.shot img { width: min(100%, 390px); max-width: 400px; margin: 0 auto; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.shot:nth-child(2) { margin-top: 42px; }
.shot:nth-child(3) { margin-top: 84px; }
.shot figcaption { margin-top: 14px; font-size: 14px; font-weight: 800; }
.shot small { display: block; color: var(--muted); font-weight: 400; margin-top: 4px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.stat { padding: 24px 18px; border-right: 1px solid var(--ink); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; font-size: 32px; line-height: 1; margin-bottom: 8px; }
.stat span { font-size: 13px; color: var(--muted); }
.path-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; }
.path-list { display: grid; gap: 12px; }
.path-item { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 22px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; }
.path-item strong { font-size: 17px; }
.path-item span { color: var(--muted); font-size: 14px; }
.path-item a { color: var(--blue); font-weight: 800; white-space: nowrap; }
.quote { padding: 34px; background: var(--ink); color: var(--paper); border-radius: 18px; min-height: 100%; display: flex; flex-direction: column; justify-content: space-between; }
.quote p { margin: 0; font-size: 24px; line-height: 1.45; }
.quote cite { display: block; margin-top: 24px; color: var(--mint); font-style: normal; font-size: 14px; }
.cta { padding: 64px 0; background: var(--blue); color: #fff; }
.cta-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cta h2 { max-width: 620px; font-size: clamp(28px, 4vw, 44px); }
.cta .btn { background: var(--mint); border-color: var(--mint); }
.footer { background: var(--ink); color: #fff; padding: 46px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 36px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,.18); }
.footer .brand-word { color: #fff; }
.footer p { color: #bcb7cf; font-size: 13px; margin: 14px 0 0; }
.footer h3 { font-size: 15px; margin-bottom: 12px; color: var(--mint); }
.footer-links { display: grid; gap: 8px; font-size: 14px; color: #d8d4e7; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; color: #aaa5bd; font-size: 12px; padding-top: 18px; }
.page-hero { padding: 70px 0 54px; background: var(--lavender); }
.page-hero h1 { font-size: clamp(38px, 6vw, 64px); max-width: 760px; }
.page-hero p { max-width: 720px; color: var(--muted); margin: 20px 0 0; font-size: 17px; }
.article { padding: 70px 0; }
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 46px; align-items: start; }
.article-main { font-size: 16px; }
.article-main h2 { font-size: 30px; margin: 44px 0 18px; }
.article-main h2:first-child { margin-top: 0; }
.article-main p { margin: 0 0 18px; color: #4e495d; }
.article-main ul, .article-main ol { margin: 0 0 24px; padding-left: 22px; color: #4e495d; }
.article-main li { margin: 8px 0; }
.callout { padding: 22px; background: var(--mint); border-left: 5px solid var(--ink); margin: 26px 0; }
.callout strong { display: block; margin-bottom: 6px; }
.side-card { position: sticky; top: 104px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); padding: 22px; }
.side-card h3 { font-size: 18px; margin-bottom: 12px; }
.side-links { display: grid; gap: 8px; font-size: 14px; }
.side-links a { padding: 10px 12px; border-radius: 8px; background: #f3efff; }
.side-links a:hover { background: var(--coral); }
.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 12px; background: var(--paper); overflow: hidden; }
.faq-question { width: 100%; padding: 20px 22px; border: 0; background: transparent; color: var(--ink); font: inherit; font-weight: 800; text-align: left; display: flex; justify-content: space-between; gap: 16px; cursor: pointer; }
.faq-question::after { content: "+"; color: var(--blue); font-size: 22px; line-height: 1; }
.faq-item.open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 20px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag { padding: 7px 11px; border-radius: 999px; background: var(--paper); border: 1px solid var(--line); font-size: 12px; font-weight: 800; }
.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; }
@media (max-width: 820px) {
  .container { width: min(100% - 28px, 680px); }
  .nav { min-height: 68px; }
  .brand img { width: 144px; }
  .menu-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 14px 20px 20px; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 8px; }
  .hero { padding: 58px 0; }
  .hero-grid, .path-grid, .article-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-art { justify-self: start; max-width: 400px; }
  .feature-grid { grid-template-columns: 1fr; }
  .gallery { gap: 38px; }
  .shot:nth-child(2), .shot:nth-child(3) { margin-top: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
  .cta-row, .footer-bottom, .section-head { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .side-card { position: static; }
}
@media (max-width: 520px) {
  h1 { font-size: 42px; }
  .hero-copy { font-size: 16px; }
  .hero-art { padding: 12px; box-shadow: 7px 7px 0 var(--blue); }
  .section { padding: 62px 0; }
  .gallery { grid-template-columns: 1fr; }
  .path-item { align-items: flex-start; flex-direction: column; }
  .quote p { font-size: 20px; }
}