:root {
  --chestnut: #5b2e22;
  --chestnut-deep: #3d1d18;
  --orange: #e58a3a;
  --orange-soft: #f4c078;
  --cream: #fff8ed;
  --paper: #fffdf9;
  --sand: #f4eadc;
  --ink: #2a211d;
  --muted: #75645a;
  --teal: #2f6f68;
  --line: rgba(91, 46, 34, .14);
  --shadow: 0 18px 45px rgba(73, 40, 25, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.topline { height: 4px; background: linear-gradient(90deg, var(--orange), var(--chestnut), var(--teal)); }
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 248, 237, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: .04em; color: var(--chestnut); }
.brand img { width: 43px; height: 43px; object-fit: cover; border-radius: 12px; }
.brand-word { font-size: 20px; }
.nav-links { display: flex; align-items: center; gap: 24px; font-size: 14px; color: var(--muted); }
.nav-links a { position: relative; padding: 8px 0; }
.nav-links a:hover, .nav-links a.active { color: var(--chestnut); }
.nav-links a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 1px; height: 2px; background: var(--orange); }
.nav-download, .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; cursor: pointer; font: inherit; font-weight: 700; border-radius: 10px; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.nav-download { padding: 10px 18px; background: var(--chestnut); color: #fff; font-size: 14px; }
.nav-download:hover, .btn:hover { transform: translateY(-2px); box-shadow: 0 10px 18px rgba(91,46,34,.2); }
.btn-primary { padding: 14px 24px; background: var(--orange); color: var(--chestnut-deep); }
.btn-ghost { padding: 13px 22px; background: transparent; color: var(--chestnut); border: 1px solid rgba(91,46,34,.28); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--teal); font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--orange); }
h1, h2, h3 { margin: 0; color: var(--chestnut); line-height: 1.25; letter-spacing: -.02em; }
h1 { font-size: clamp(34px, 5vw, 64px); }
h2 { font-size: clamp(26px, 3vw, 38px); }
h3 { font-size: 19px; }
.hero { padding: 78px 0 72px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 64px; }
.hero-copy h1 { margin: 15px 0 20px; max-width: 8em; }
.hero-copy .lead { max-width: 570px; margin: 0; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
.hero-note { margin-top: 15px; font-size: 13px; color: var(--muted); }
.hero-art { position: relative; min-height: 440px; }
.hero-art::before { content: ""; position: absolute; width: 360px; height: 360px; right: 8%; top: 18px; border-radius: 50%; background: #f7dfbb; }
.hero-art::after { content: ""; position: absolute; width: 100px; height: 100px; left: 5%; bottom: 20px; border-radius: 24px; background: #dce8dc; transform: rotate(-12deg); }
.phone-stack { position: relative; z-index: 1; height: 440px; }
.phone { position: absolute; width: 220px; border: 8px solid var(--chestnut-deep); border-radius: 30px; overflow: hidden; background: var(--paper); box-shadow: var(--shadow); }
.phone img { width: 100%; height: auto; }
.phone.one { right: 20%; top: 0; transform: rotate(7deg); }
.phone.two { left: 15%; bottom: 0; transform: rotate(-8deg); }
.section { padding: 92px 0; }
.section-tint { background: var(--sand); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 34px; }
.section-head .eyebrow { margin-bottom: 10px; }
.section-head p { max-width: 470px; margin: 0; color: var(--muted); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: 24px 20px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; color: var(--chestnut); font-size: 30px; line-height: 1; }
.stat span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { padding: 28px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 9px 25px rgba(73,40,25,.06); }
.feature-icon { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 12px; background: var(--orange-soft); color: var(--chestnut); font-weight: 900; }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.gallery { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; align-items: start; }
.shot { padding: 8px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 9px 25px rgba(73,40,25,.08); }
.shot:nth-child(2), .shot:nth-child(4) { margin-top: 34px; }
.shot img { width: 100%; max-width: 400px; border-radius: 8px; }
.shot figcaption { padding: 10px 5px 3px; color: var(--chestnut); font-size: 13px; font-weight: 700; }
.path-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.path-card { position: relative; padding: 26px; min-height: 190px; background: var(--chestnut); color: #fff8ed; border-radius: 12px; overflow: hidden; }
.path-card:nth-child(2) { background: var(--teal); }
.path-card:nth-child(3) { background: #ad6332; }
.path-card .number { font-size: 42px; font-weight: 900; line-height: 1; opacity: .35; }
.path-card h3 { margin: 20px 0 8px; color: #fff8ed; font-size: 22px; }
.path-card p { margin: 0; color: rgba(255,248,237,.78); font-size: 14px; }
.quote-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
.quote { padding: 35px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; }
.quote blockquote { margin: 0; color: var(--chestnut); font-size: 22px; line-height: 1.6; font-weight: 700; }
.quote cite { display: block; margin-top: 20px; color: var(--muted); font-size: 13px; font-style: normal; }
.trust-list { display: grid; gap: 12px; }
.trust-item { padding: 18px; background: #f7dfbb; border-radius: 10px; }
.trust-item strong { display: block; color: var(--chestnut); }
.trust-item span { color: var(--muted); font-size: 13px; }
.cta-band { padding: 60px 0; background: var(--chestnut-deep); color: var(--cream); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.cta-inner h2 { color: var(--cream); font-size: clamp(26px, 3vw, 42px); }
.cta-inner p { margin: 10px 0 0; color: rgba(255,248,237,.72); }
.site-footer { padding: 38px 0 22px; background: #2a1713; color: rgba(255,248,237,.72); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; padding-bottom: 30px; }
.footer-brand { color: var(--cream); font-size: 20px; font-weight: 800; }
.footer-grid p { margin: 10px 0 0; font-size: 13px; }
.footer-title { margin-bottom: 10px; color: var(--orange-soft); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
.footer-links { display: grid; gap: 7px; font-size: 13px; }
.footer-links a:hover { color: #fff; }
.disclaimer { padding: 17px 0; border-top: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); font-size: 12px; }
.copyright { padding-top: 16px; font-size: 12px; }
.page-hero { padding: 75px 0 55px; background: var(--sand); }
.page-hero h1 { margin: 14px 0 16px; font-size: clamp(34px, 5vw, 56px); max-width: 14em; }
.page-hero p { max-width: 730px; margin: 0; color: var(--muted); font-size: 17px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 45px; align-items: start; }
.article { max-width: 760px; }
.article h2 { margin: 44px 0 18px; font-size: 30px; }
.article h3 { margin: 26px 0 10px; font-size: 20px; }
.article p { margin: 0 0 16px; color: #4e4139; }
.article ul, .article ol { margin: 0 0 18px; padding-left: 22px; color: #4e4139; }
.article li { margin: 8px 0; }
.aside { position: sticky; top: 105px; padding: 23px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; }
.aside-title { color: var(--chestnut); font-weight: 800; }
.aside nav { display: grid; gap: 8px; margin-top: 13px; font-size: 13px; color: var(--muted); }
.aside nav a:hover { color: var(--chestnut); }
.tip-box { margin: 24px 0; padding: 20px 22px; background: #f7dfbb; border-left: 4px solid var(--orange); border-radius: 0 10px 10px 0; }
.tip-box strong { color: var(--chestnut); }
.faq-list { display: grid; gap: 12px; }
.faq-item { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 19px 21px; border: 0; background: transparent; text-align: left; color: var(--chestnut); font: inherit; font-weight: 800; cursor: pointer; }
.faq-question span:last-child { color: var(--orange); font-size: 24px; line-height: 1; }
.faq-answer { display: none; padding: 0 21px 19px; color: var(--muted); font-size: 14px; }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
.feature-table { width: 100%; border-collapse: collapse; background: var(--paper); border: 1px solid var(--line); }
.feature-table th, .feature-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.feature-table th { width: 28%; color: var(--chestnut); background: #f7dfbb; }
.feature-table td { color: var(--muted); font-size: 14px; }
@media (max-width: 900px) {
  .hero-grid, .quote-grid, .article-layout { grid-template-columns: 1fr; }
  .hero-art { min-height: 390px; max-width: 560px; margin: 0 auto; width: 100%; }
  .aside { position: static; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .gallery .shot:nth-child(4), .gallery .shot:nth-child(5) { margin-top: 0; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 28px, 560px); }
  .nav { min-height: 68px; gap: 12px; }
  .brand-word { font-size: 17px; }
  .brand img { width: 37px; height: 37px; }
  .nav-links { gap: 12px; font-size: 12px; }
  .nav-download { padding: 8px 11px; font-size: 12px; }
  .hero { padding: 54px 0 45px; }
  .hero-copy .lead { font-size: 16px; }
  .hero-art { min-height: 325px; }
  .phone { width: 170px; border-width: 6px; border-radius: 23px; }
  .phone.one { right: 10%; }
  .phone.two { left: 10%; }
  .section { padding: 62px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .feature-grid, .path-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .quote { padding: 25px; }
  .quote blockquote { font-size: 19px; }
  .cta-inner { display: block; }
  .cta-inner .btn { margin-top: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .page-hero { padding: 54px 0 38px; }
  .page-hero p { font-size: 15px; }
  .article h2 { margin-top: 36px; font-size: 27px; }
  .feature-table { display: block; overflow-x: auto; }
}