:root {
  --paper: #f2eddf;
  --paper-light: #faf7ef;
  --ink: #24211c;
  --muted-ink: #6e685e;
  --vermilion: #9b3124;
  --body-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --display-font: "Songti SC", STSong, "Noto Serif CJK SC", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body-font); text-rendering: optimizeLegibility; }
a { color: inherit; text-decoration: none; }
::selection { background: rgb(155 49 36 / 18%); }

.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgb(36 33 28 / 10%); background: rgb(242 237 223 / 90%); backdrop-filter: blur(18px); }
.header-inner, .container, .support-inner, .footer-inner { width: min(100% - 40px, 1152px); margin-inline: auto; }
.header-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 650; letter-spacing: .02em; }
.brand img { border-radius: 10px; box-shadow: 0 2px 8px rgb(36 33 28 / 14%); }
nav { display: flex; align-items: center; gap: 4px; color: var(--muted-ink); font-size: 14px; }
nav a { padding: 7px 10px; border-radius: 10px; }
nav a:hover { color: var(--ink); background: rgb(36 33 28 / 6%); }

.policy-section { scroll-margin-top: 80px; padding: 72px 0 80px; background: var(--paper-light); }
.section-intro { display: grid; grid-template-columns: .72fr 1.28fr; gap: 32px; align-items: end; padding-bottom: 40px; border-bottom: 1px solid rgb(36 33 28 / 12%); }
.eyebrow, .support-eyebrow { margin: 0; color: var(--vermilion); font-size: 14px; font-weight: 650; letter-spacing: .2em; }
h1, h2 { font-family: var(--display-font); }
h1 { margin: 12px 0 0; font-size: clamp(36px, 5vw, 52px); line-height: 1.12; letter-spacing: -.025em; }
.summary { justify-self: end; max-width: 672px; margin: 0; color: var(--muted-ink); font-size: 16px; line-height: 1.8; }
.policy-list article { display: grid; grid-template-columns: .72fr 1.28fr; gap: 32px; padding: 36px 0; border-bottom: 1px solid rgb(36 33 28 / 10%); }
.section-title { display: flex; align-items: baseline; gap: 16px; }
.section-title span { color: var(--vermilion); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; letter-spacing: .18em; }
.section-title h2 { margin: 0; font-size: 20px; }
.policy-list article > p { max-width: 672px; margin: 0; color: var(--muted-ink); font-size: 15px; line-height: 1.85; }

.support-section { scroll-margin-top: 80px; padding: 72px 0; border-block: 1px solid rgb(36 33 28 / 10%); background: var(--ink); color: var(--paper); }
.support-inner { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.support-eyebrow { color: rgb(242 237 223 / 55%); }
.support-section h2 { margin: 12px 0 0; font-size: clamp(36px, 5vw, 52px); letter-spacing: -.025em; }
.support-section p:not(.support-eyebrow) { max-width: 672px; margin: 20px 0 0; color: rgb(242 237 223 / 70%); font-size: 16px; line-height: 2; }
.email-button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 24px; border-radius: 999px; background: var(--paper); color: var(--ink); font-size: 14px; font-weight: 600; }
.email-button:hover { background: rgb(242 237 223 / 85%); }

footer { padding: 28px 0; background: var(--paper); color: var(--muted-ink); font-size: 14px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.footer-inner p { margin: 0; }
.footer-inner div { display: flex; gap: 20px; }
.footer-inner a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 760px) {
  .header-inner, .container, .support-inner, .footer-inner { width: min(100% - 32px, 1152px); }
  nav a:first-child { display: none; }
  .policy-section { padding: 56px 0; }
  .section-intro, .policy-list article, .support-inner { grid-template-columns: 1fr; }
  .section-intro { gap: 28px; }
  .summary { justify-self: start; }
  .policy-list article { gap: 16px; padding: 32px 0; }
  .support-section { padding: 60px 0; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}