:root {
  --bg: #fffaf3;
  --surface: #ffffff;
  --text: #20150f;
  --muted: #6f5d4f;
  --brand: #f36b21;
  --brand-dark: #c94d0b;
  --accent: #ffe1c8;
  --line: #ead8c8;
  --shadow: 0 24px 70px rgba(120, 69, 22, .13);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, #fff1dd, transparent 35%), var(--bg);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  background: rgba(255, 250, 243, .9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(234, 216, 200, .7);
}
.brand { font-size: 24px; font-weight: 900; color: var(--brand-dark); letter-spacing: .04em; }
nav { display: flex; gap: 22px; align-items: center; font-size: 15px; color: var(--muted); }
.nav-cta { color: var(--brand-dark); font-weight: 700; }
.hero {
  padding: 88px clamp(20px, 7vw, 96px) 64px;
  max-width: 1160px;
  margin: 0 auto;
}
.eyebrow { color: var(--brand-dark); font-weight: 800; letter-spacing: .08em; margin: 0 0 12px; }
h1 { font-size: clamp(38px, 7vw, 76px); line-height: 1.06; margin: 0 0 24px; letter-spacing: -.04em; }
.hero-text { max-width: 780px; font-size: 20px; color: var(--muted); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.button { display: inline-flex; padding: 13px 22px; border-radius: 999px; font-weight: 800; border: 1px solid var(--line); }
.button.primary { background: var(--brand); color: white; border-color: var(--brand); box-shadow: 0 12px 28px rgba(243,107,33,.26); }
.button.secondary { background: white; color: var(--brand-dark); }
.answer-card, .section, .cta-section {
  max-width: 1080px;
  margin: 28px auto;
  padding: clamp(28px, 5vw, 52px);
  background: rgba(255,255,255,.82);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: var(--shadow);
}
.answer-card p { font-size: 19px; color: var(--muted); }
.section-heading { max-width: 760px; margin-bottom: 28px; }
h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.18; margin: 0 0 16px; letter-spacing: -.02em; }
h3 { font-size: 22px; margin: 0 0 12px; }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card, .mini-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fffdf9;
}
ul { padding-left: 22px; color: var(--muted); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: white; border-radius: 18px; overflow: hidden; }
th, td { padding: 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--accent); color: var(--brand-dark); }
details { border-top: 1px solid var(--line); padding: 18px 0; }
summary { cursor: pointer; font-weight: 800; font-size: 18px; }
.cta-section { text-align: center; background: linear-gradient(135deg, #fff, #ffe7d3); }
.contact-line { font-weight: 800; color: var(--brand-dark); }
footer { text-align: center; color: var(--muted); padding: 36px 20px 52px; }
.article-main { padding: 44px 20px; }
.article {
  max-width: 880px;
  margin: 0 auto;
  background: rgba(255,255,255,.88);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: var(--shadow);
  padding: clamp(26px, 5vw, 64px);
}
.article h1 { font-size: clamp(34px, 5vw, 58px); }
.article h2 { margin-top: 44px; }
.article h3 { margin-top: 26px; }
.article p, .article li { color: var(--muted); }
.article-meta { color: var(--muted); font-size: 14px; }
.direct-answer, blockquote {
  margin: 24px 0;
  padding: 20px 22px;
  background: #fff3e7;
  border-left: 5px solid var(--brand);
  border-radius: 16px;
  color: #4d2d19;
}
@media (max-width: 820px) {
  .site-header { align-items: flex-start; gap: 12px; flex-direction: column; }
  nav { flex-wrap: wrap; gap: 12px; }
  .grid.two, .grid.four { grid-template-columns: 1fr; }
  h1 { font-size: 40px; }
}