:root {
  --paper: #f4f0e7;
  --paper-deep: #ebe3d4;
  --ink: #171714;
  --ink-soft: #545047;
  --gold: #a47b37;
  --gold-light: #c8a96f;
  --cinnabar: #8b3427;
  --line: rgba(23, 23, 20, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
main { overflow: hidden; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  opacity: .22;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(89, 66, 31, .10) 0 1px, transparent 1.4px),
    radial-gradient(circle at 70% 65%, rgba(89, 66, 31, .08) 0 1px, transparent 1.2px);
  background-size: 19px 17px, 23px 21px;
  mix-blend-mode: multiply;
}

.site-header {
  height: 92px;
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 13px; width: fit-content; }
.brand-symbol-image {
  width: 42px;
  height: 42px;
  position: relative;
  flex: 0 0 42px;
  overflow: hidden;
  background: var(--paper);
}
.brand-symbol-image img {
  position: absolute;
  width: 230px;
  max-width: none;
  height: auto;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -31%);
  mix-blend-mode: multiply;
  filter: saturate(.92) contrast(1.04);
}
.brand-name { display: flex; flex-direction: column; gap: 2px; }
.brand-name strong { font-family: "Songti SC", STSong, serif; font-size: 17px; letter-spacing: .15em; font-weight: 600; }
.brand-name small { font-family: Georgia, serif; font-size: 8px; letter-spacing: .21em; color: var(--gold); }
nav { display: flex; gap: 36px; }
nav a { position: relative; font-size: 13px; letter-spacing: .08em; }
nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 1px; background: var(--gold); transition: right .25s ease; }
nav a:hover::after, nav a:focus-visible::after { right: 0; }
.header-cta { justify-self: end; padding: 11px 20px; border: 1px solid var(--ink); font-size: 12px; letter-spacing: .12em; transition: .25s ease; }
.header-cta:hover { background: var(--ink); color: var(--paper); }

.hero {
  max-width: 1480px;
  min-height: 710px;
  margin: 0 auto;
  padding: 62px 48px 70px;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 76px;
  align-items: center;
}
.eyebrow, .section-kicker { margin: 0 0 26px; color: var(--gold); font-size: 12px; letter-spacing: .25em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 13px; }
.eyebrow span { width: 32px; height: 1px; background: var(--gold); }
.hero h1, .section h2, .closing h2 {
  margin: 0;
  font-family: "Songti SC", STSong, "Noto Serif SC", serif;
  font-weight: 500;
  letter-spacing: -.03em;
}
.hero h1 { font-size: clamp(56px, 6vw, 94px); line-height: 1.14; }
.hero-lead { max-width: 660px; margin: 32px 0 0; color: var(--ink-soft); font-size: 17px; line-height: 2; }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; }
.button { min-width: 154px; padding: 15px 22px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; border: 1px solid var(--ink); font-size: 13px; letter-spacing: .08em; transition: transform .25s ease, background .25s ease, color .25s ease; }
.button:hover { transform: translateY(-3px); }
.button-primary { background: var(--ink); color: var(--paper); }
.button-primary:hover { background: var(--gold); border-color: var(--gold); }
.button-quiet:hover { color: var(--gold); border-color: var(--gold); }
.hero-proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 54px; padding-top: 26px; border-top: 1px solid var(--line); }
.hero-proof div { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: center; }
.hero-proof strong { color: var(--gold); font-family: Georgia, serif; font-size: 35px; font-weight: 400; }
.hero-proof span { color: var(--ink-soft); font-size: 11px; line-height: 1.7; }

.brand-stage { position: relative; min-height: 570px; isolation: isolate; }
.sun-disc { position: absolute; width: 430px; height: 430px; top: 28px; left: 50%; transform: translateX(-50%); border-radius: 50%; background: #e7dcc7; box-shadow: inset 0 0 90px rgba(164,123,55,.08); }
.sun-disc::before, .sun-disc::after { content: ""; position: absolute; inset: 25px; border-radius: 50%; border: 1px solid rgba(164,123,55,.28); }
.sun-disc::after { inset: 58px; border-color: rgba(164,123,55,.16); }
.plaque-blend {
  position: absolute;
  z-index: 2;
  width: 110%;
  height: auto;
  aspect-ratio: 3 / 2;
  top: 24px;
  left: -5%;
  overflow: hidden;
  clip-path: inset(4.2%);
  mix-blend-mode: multiply;
}
.plaque-blend img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.08); object-position: 50% 50%; filter: saturate(.85) contrast(1.04); }
.stage-note { position: absolute; z-index: 3; right: 0; bottom: 76px; width: 240px; padding: 22px 0 22px 24px; border-left: 1px solid var(--gold); background: linear-gradient(90deg, rgba(244,240,231,.78), rgba(244,240,231,.28)); backdrop-filter: blur(3px); }
.stage-note span { display: block; margin-bottom: 10px; color: var(--gold); font-size: 10px; letter-spacing: .18em; }
.stage-note b { font-family: "Songti SC", STSong, serif; font-size: 20px; line-height: 1.65; font-weight: 500; }
.mountain-lines { position: absolute; z-index: 1; left: -10%; right: -10%; bottom: 0; height: 180px; opacity: .55; }
.mountain-lines i { position: absolute; bottom: -90px; width: 280px; height: 210px; border: 1px solid rgba(164,123,55,.44); transform: rotate(45deg) skew(-12deg,-12deg); }
.mountain-lines i:nth-child(1) { left: 0; }
.mountain-lines i:nth-child(2) { left: 24%; bottom: -120px; width: 330px; }
.mountain-lines i:nth-child(3) { right: 9%; bottom: -95px; width: 250px; }
.mountain-lines i:nth-child(4) { right: -18%; bottom: -125px; width: 360px; }

.marquee { min-width: max-content; padding: 18px 2vw; display: flex; align-items: center; justify-content: space-around; gap: 32px; background: var(--ink); color: var(--paper); font-family: Georgia, serif; font-size: 13px; letter-spacing: .18em; }
.marquee i { color: var(--gold-light); font-style: normal; }

.section { padding: 120px max(48px, calc((100vw - 1384px) / 2)); }
.section-heading { display: grid; grid-template-columns: 1fr 440px; align-items: end; gap: 60px; margin-bottom: 64px; }
.section-heading h2, .audience-intro h2, .about h2 { font-size: clamp(42px, 4.4vw, 66px); line-height: 1.25; }
.section-heading > p, .audience-intro > p { margin: 0 0 5px; color: var(--ink-soft); font-size: 15px; line-height: 2; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--line); }
.service-card { min-height: 330px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: transform .28s ease, background .28s ease, color .28s ease; }
.service-card:hover { position: relative; z-index: 2; transform: translateY(-7px); background: var(--ink); color: var(--paper); }
.service-top { display: flex; justify-content: space-between; color: var(--gold); font-family: Georgia, serif; font-size: 13px; }
.service-top i { font-style: normal; font-size: 20px; transition: transform .28s ease; }
.service-card:hover .service-top i { transform: rotate(45deg); }
.service-card h3 { margin: 48px 0 20px; font-family: "Songti SC", STSong, serif; font-size: 31px; font-weight: 500; }
.service-card p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.9; }
.service-card:hover p { color: rgba(244,240,231,.72); }
.tags { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { padding: 6px 10px; border: 1px solid var(--line); color: var(--ink-soft); font-size: 10px; }
.service-card:hover .tags span { color: var(--gold-light); border-color: rgba(200,169,111,.35); }

.audience { display: grid; grid-template-columns: .82fr 1.18fr; gap: 100px; background: var(--ink); color: var(--paper); }
.audience-intro { position: relative; padding-right: 40px; }
.audience-intro > p { margin-top: 28px; color: rgba(244,240,231,.62); }
.ink-stamp { margin-top: 54px; width: 76px; height: 76px; display: grid; place-items: center; border: 1px solid var(--cinnabar); color: #a94a3c; font-family: "Songti SC", STSong, serif; line-height: 1.2; text-align: center; transform: rotate(-6deg); }
.audience-list { border-top: 1px solid rgba(244,240,231,.24); }
.audience-list article { display: grid; grid-template-columns: 56px 180px 1fr; align-items: center; gap: 22px; min-height: 126px; border-bottom: 1px solid rgba(244,240,231,.18); }
.audience-list span { color: var(--gold-light); font-family: Georgia, serif; font-size: 13px; }
.audience-list h3 { margin: 0; font-family: "Songti SC", STSong, serif; font-size: 24px; font-weight: 500; }
.audience-list p { margin: 0; color: rgba(244,240,231,.58); font-size: 13px; line-height: 1.8; }

.method { background: var(--paper-deep); }
.section-heading.compact { margin-bottom: 74px; }
.process-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--ink); }
.process-list li { position: relative; min-height: 230px; padding: 27px 26px; border-right: 1px solid var(--line); }
.process-list li:last-child { border-right: 0; }
.process-list li::before { content: ""; position: absolute; top: -5px; left: 26px; width: 9px; height: 9px; border-radius: 50%; background: var(--gold); }
.process-list span { color: var(--gold); font-family: Georgia, serif; font-size: 12px; }
.process-list h3 { margin: 50px 0 16px; font-family: "Songti SC", STSong, serif; font-size: 26px; font-weight: 500; }
.process-list p { margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.8; }

.about { display: grid; grid-template-columns: .7fr 1.3fr; gap: 110px; align-items: center; }
.about-mark { position: relative; display: grid; place-items: center; width: 440px; aspect-ratio: 1; border-radius: 50%; background: var(--paper-deep); color: var(--gold); font-family: "Songti SC", STSong, serif; font-size: 210px; line-height: 1; }
.about-mark::before, .about-mark::after { content: ""; position: absolute; inset: 24px; border: 1px solid rgba(164,123,55,.3); border-radius: 50%; }
.about-mark::after { inset: 57px; border-color: rgba(164,123,55,.15); }
.about-copy > p:not(.section-kicker) { max-width: 760px; margin: 28px 0 0; color: var(--ink-soft); font-size: 15px; line-height: 2.05; }
.about-values { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.about-values span { color: var(--gold); font-family: "Songti SC", STSong, serif; font-size: 15px; }

.closing { padding: 120px max(48px, calc((100vw - 1384px) / 2)) 70px; background: var(--gold); color: var(--paper); }
.closing > p { margin: 0 0 26px; font-family: Georgia, serif; font-size: 12px; letter-spacing: .28em; }
.closing h2 { font-size: clamp(68px, 8vw, 128px); line-height: 1; }
.closing h2 em { color: var(--ink); font-style: normal; }
.closing-meta { margin-top: 64px; padding-top: 22px; border-top: 1px solid rgba(244,240,231,.42); display: flex; justify-content: space-between; gap: 20px; font-size: 12px; letter-spacing: .12em; }
footer { min-height: 118px; padding: 28px max(48px, calc((100vw - 1384px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 30px; background: var(--ink); color: var(--paper); }
.footer-brand .brand-symbol-image { background: var(--paper); }
.footer-brand .brand-name small { color: var(--gold-light); }
footer p, footer > a { color: rgba(244,240,231,.55); font-size: 11px; letter-spacing: .1em; }

@media (max-width: 1100px) {
  .site-header { grid-template-columns: 1fr auto; padding-inline: 28px; }
  nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 20px; padding-inline: 28px; }
  .brand-stage { min-height: 520px; max-width: 680px; width: 100%; margin: 0 auto; }
  .section { padding: 90px 32px; }
  .section-heading { grid-template-columns: 1fr 360px; }
  .audience { grid-template-columns: 1fr; gap: 60px; }
  .about { grid-template-columns: 1fr; }
  .about-mark { width: min(430px, 80vw); }
}

@media (max-width: 760px) {
  .site-header { height: 76px; padding-inline: 20px; }
  .brand-name strong { font-size: 14px; }
  .header-cta { padding: 9px 12px; }
  .hero { min-height: 0; padding: 55px 20px 50px; }
  .hero h1 { font-size: clamp(48px, 14vw, 68px); }
  .hero-lead { font-size: 15px; line-height: 1.85; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-proof { grid-template-columns: 1fr; gap: 15px; }
  .brand-stage { min-height: 420px; }
  .sun-disc { width: 330px; height: 330px; }
  .plaque-blend { width: 122%; left: -11%; height: auto; top: 18px; }
  .stage-note { bottom: 22px; right: 10px; width: 210px; }
  .marquee { justify-content: flex-start; overflow: hidden; }
  .section { padding: 76px 20px; }
  .section-heading { grid-template-columns: 1fr; gap: 28px; margin-bottom: 42px; }
  .section-heading h2, .audience-intro h2, .about h2 { font-size: 42px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 290px; }
  .audience-list article { grid-template-columns: 40px 1fr; gap: 16px; padding: 24px 0; }
  .audience-list article p { grid-column: 2; }
  .process-list { grid-template-columns: 1fr; }
  .process-list li { min-height: 160px; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-list li::before { top: 26px; left: -5px; }
  .process-list h3 { margin: 24px 0 12px; }
  .about { gap: 60px; }
  .about-mark { font-size: 150px; }
  .about-values { grid-template-columns: repeat(2, 1fr); }
  .closing { padding: 84px 20px 48px; }
  .closing h2 { font-size: clamp(60px, 19vw, 92px); }
  .closing-meta { flex-direction: column; }
  footer { padding: 30px 20px; align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}