:root {
  --paper: #f2eadf; --paper-deep: #dfd1c1; --ink: #28231f; --muted: #71685f;
  --red: #8b3f31; --red-dark: #6f3026; --white: #fffaf4; --line: rgba(40,35,31,.2);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: clip; color: var(--ink); background: var(--paper); font-family: "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.7; }
a { color: inherit; }
.skip-link { position: fixed; z-index: 100; left: 8px; top: 8px; padding: 10px 16px; background: var(--ink); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.site-header { width: min(1180px, calc(100% - 40px)); min-height: 84px; margin: auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.logo { display: flex; align-items: baseline; gap: 12px; text-decoration: none; font-family: Georgia, "Songti SC", serif; font-size: 24px; font-weight: 700; }
.logo small { font-family: Arial, sans-serif; font-size: 9px; letter-spacing: .15em; }
nav { display: flex; align-items: center; gap: 28px; }
nav a { min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; font-size: 14px; font-weight: 650; }
.nav-cta { padding: 0 18px; border: 1px solid var(--ink); border-radius: 99px; }
a:focus-visible { outline: 3px solid #275acb; outline-offset: 4px; }
.hero { position: relative; width: min(1180px, calc(100% - 40px)); min-height: 720px; margin: auto; padding: 92px 0 72px; display: grid; grid-template-columns: 1.1fr .75fr; align-items: center; gap: 72px; }
.kicker { margin: 0 0 16px; font-size: 12px; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { font-family: Georgia, "Songti SC", "SimSun", serif; font-weight: 500; line-height: 1.18; letter-spacing: -.025em; }
h1 { margin: 0 0 28px; font-size: clamp(46px, 6.3vw, 82px); }
h1 em { color: var(--red); font-weight: 500; }
.lead { max-width: 610px; color: var(--muted); font-size: 18px; }
.hero-actions { margin-top: 34px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.button { min-height: 48px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; border-radius: 99px; text-decoration: none; font-weight: 750; transition: background .2s ease, color .2s ease; }
.button-primary { background: var(--red); color: white; }
.button-primary:hover { background: var(--red-dark); }
.text-link { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; text-underline-offset: 5px; }
.portrait-card { position: relative; width: min(100%, 410px); justify-self: center; }
.portrait-card svg { display: block; width: 100%; height: auto; filter: drop-shadow(0 32px 30px rgba(65,45,31,.14)); }
.portrait-note { position: absolute; left: -32px; bottom: 38px; padding: 12px 18px; background: var(--white); border: 1px solid var(--line); border-radius: 99px; font-family: Georgia, "Songti SC", serif; }
.side-note { position: absolute; right: -70px; top: 50%; margin: 0; transform: rotate(90deg); font-size: 10px; letter-spacing: .25em; }
.signals { padding: 112px max(20px, calc((100% - 1180px)/2)); background: var(--white); }
.section-intro { display: grid; grid-template-columns: 90px 1fr; gap: 28px; margin-bottom: 56px; }
.section-no { font: 700 13px/1 Arial; color: var(--red); }
.section-intro h2, .method h2, .about h2, .closing h2 { max-width: 880px; margin: 0; font-size: clamp(36px, 5vw, 62px); }
.signal-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.signal-grid article { padding: 32px 32px 8px 0; border-right: 1px solid var(--line); }
.signal-grid article + article { padding-left: 32px; }
.signal-grid article:last-child { border-right: 0; }
.signal-grid span { color: var(--red); font-size: 12px; font-weight: 700; }
.signal-grid h3 { min-height: 68px; margin: 24px 0 12px; font-size: 25px; }
.signal-grid p { color: var(--muted); }
.method { padding: 112px max(20px, calc((100% - 1180px)/2)); display: grid; grid-template-columns: 1fr .8fr; gap: 100px; }
.method-copy > p:last-child { max-width: 620px; color: var(--muted); font-size: 18px; }
.steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.steps li { padding: 26px 0; display: grid; grid-template-columns: 54px 1fr; gap: 18px; border-bottom: 1px solid var(--line); }
.steps span { color: var(--red); font-size: 12px; font-weight: 750; }
.steps h3 { margin: 0 0 6px; font-size: 24px; }
.steps p { margin: 0; color: var(--muted); }
.about { padding: 112px max(20px, calc((100% - 1180px)/2)); background: var(--paper-deep); }
.quote-mark { height: 80px; color: var(--red); font: 120px/1 Georgia, serif; }
blockquote { max-width: 1040px; margin: 0 0 72px; font: 500 clamp(34px, 5vw, 64px)/1.3 Georgia, "Songti SC", serif; }
.about-meta { display: grid; grid-template-columns: .6fr 1fr; gap: 60px; padding-top: 28px; border-top: 1px solid var(--line); }
.about-meta p:last-child { max-width: 680px; color: var(--muted); font-size: 18px; }
.closing { padding: 120px 20px; text-align: center; background: var(--red); color: var(--white); }
.closing h2 { margin: 0 auto 36px; }
.button-light { background: var(--white); color: var(--red-dark); }
.button-light:hover { background: var(--ink); color: white; }
.fine-print { margin: 20px 0 0; font-size: 12px; opacity: .72; }
footer { min-height: 84px; padding: 20px max(20px, calc((100% - 1180px)/2)); display: flex; justify-content: space-between; align-items: center; gap: 24px; font-size: 13px; }
footer a { min-height: 44px; display: inline-flex; align-items: center; text-underline-offset: 5px; }
.reveal-ready [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .45s ease-out, transform .45s ease-out; }
.reveal-ready [data-reveal].is-visible { opacity: 1; transform: translateY(0); }
@media (max-width: 850px) {
  nav > a:not(.nav-cta) { display: none; }
  .hero, .method { grid-template-columns: 1fr; }
  .portrait-card { width: min(78%, 380px); }
  .side-note { display: none; }
  .signal-grid { grid-template-columns: 1fr; }
  .signal-grid article, .signal-grid article + article { padding: 26px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .signal-grid h3 { min-height: 0; }
}
@media (max-width: 560px) {
  .site-header { min-height: 70px; }
  .logo small { display: none; }
  .nav-cta { padding: 0 14px; }
  .hero { min-height: auto; padding: 60px 0; gap: 48px; }
  h1 { font-size: 47px; }
  .section-intro { grid-template-columns: 1fr; gap: 8px; }
  .signals, .method, .about, .closing { padding-top: 80px; padding-bottom: 80px; }
  .about-meta { grid-template-columns: 1fr; gap: 12px; }
  footer { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}