:root {
  --paper: #f2ecdf;
  --paper-light: #fbf7ef;
  --ink: #20251f;
  --ink-soft: #4e544c;
  --muted: #8b8478;
  --red: #b14732;
  --jade: #5d7164;
  --line: rgba(35, 40, 34, 0.12);
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: "Avenir Next", "Optima", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 8%, rgba(177, 71, 50, 0.07), transparent 26%),
    radial-gradient(circle at 4% 48%, rgba(93, 113, 100, 0.07), transparent 24%),
    var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
.paper-noise {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.19;
  mix-blend-mode: multiply;
  background-image: url("assets/paper-noise.svg");
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  min-height: 86px;
  padding: 0 max(28px, calc((100vw - 1260px) / 2));
  border-bottom: 1px solid rgba(35, 40, 34, 0.08);
  background: rgba(242, 236, 223, 0.88);
  backdrop-filter: blur(18px) saturate(1.2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-seal {
  display: grid;
  place-items: center;
  width: 42px;
  height: 46px;
  border: 1px solid rgba(255, 248, 236, 0.64);
  border-radius: 5px;
  color: #f7f1e5;
  background: var(--red);
  font-family: var(--display);
  font-size: 26px;
  line-height: 1;
}

.brand-name {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.1em;
}

.brand-name small {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--ink-soft);
  font-size: 12px;
}

nav a {
  position: relative;
  transition: color 160ms ease;
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -7px;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

nav a:hover { color: var(--ink); }
nav a:hover::after { transform: scaleX(1); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
  gap: clamp(30px, 7vw, 110px);
  align-items: center;
  width: min(1260px, calc(100% - 64px));
  min-height: 720px;
  margin: 0 auto;
  padding: 72px 0 52px;
}

.eyebrow,
.kicker {
  margin: 0;
  color: var(--red);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

h1, h2, h3, p { margin-top: 0; }

.hero h1 {
  margin: 27px 0 24px;
  font-family: var(--serif);
  font-size: clamp(64px, 7.8vw, 112px);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 1;
}

.hero h1 em {
  color: var(--red);
  font-style: normal;
}

.hero-lead {
  max-width: 580px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.95;
}

.hero-links {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  transition: transform 180ms ease, background 180ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-ink { color: var(--paper-light); background: var(--ink); }
.button-ink:hover { background: #2d342c; }

.text-link {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 55px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
}

.hero-art {
  position: relative;
  min-height: 570px;
}

.art-vertical {
  position: absolute;
  top: 0;
  right: 0;
  color: rgba(35, 40, 34, 0.16);
  font-family: var(--display);
  font-size: 18px;
  letter-spacing: 0.22em;
  writing-mode: vertical-rl;
}

.art-paper {
  position: absolute;
  top: 28px;
  left: 8%;
  width: min(420px, 82%);
  aspect-ratio: 0.78;
  padding: 30px;
  border: 1px solid rgba(54, 45, 34, 0.13);
  background:
    linear-gradient(rgba(255, 252, 246, 0.82), rgba(251, 246, 237, 0.94)),
    var(--paper-light);
  box-shadow: 0 32px 75px rgba(47, 39, 29, 0.15);
  transform: rotate(-2.4deg);
}

.art-paper::before {
  content: "";
  position: absolute;
  inset: 11px;
  border: 1px solid rgba(54, 45, 34, 0.07);
}

.art-label {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.art-char {
  position: absolute;
  inset: 20% 0 auto;
  color: #20251f;
  font-family: var(--display);
  font-size: clamp(150px, 19vw, 240px);
  line-height: 1;
  text-align: center;
}

.art-seal {
  position: absolute;
  right: 10%;
  bottom: 9%;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: #fff3e4;
  background: var(--red);
  font-family: var(--display);
  font-size: 27px;
}

.art-note {
  position: absolute;
  left: 0;
  bottom: 48px;
  max-width: 200px;
  padding: 12px 14px;
  border: 1px solid rgba(35, 40, 34, 0.1);
  color: var(--ink-soft);
  background: rgba(251, 247, 239, 0.95);
  box-shadow: 0 12px 28px rgba(42, 35, 27, 0.08);
  font-size: 11px;
}

.statement {
  width: min(1260px, calc(100% - 64px));
  margin: 0 auto;
  padding: 34px 0 76px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.statement-mark {
  display: block;
  height: 30px;
  color: rgba(177, 71, 50, 0.25);
  font-family: var(--display);
  font-size: 54px;
  line-height: 1;
}

.statement p {
  margin: 0;
  font-family: var(--display);
  font-size: 27px;
}

.statement small {
  display: block;
  margin-top: 9px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.15em;
}

.section {
  width: min(1260px, calc(100% - 64px));
  margin: 0 auto;
  padding: 106px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 390px;
  gap: 46px;
  align-items: end;
  margin-bottom: 45px;
}

.section-heading h2 {
  margin: 13px 0 0;
  font-family: var(--serif);
  font-size: clamp(40px, 4.6vw, 68px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.section-heading > p {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
  gap: 16px;
}

.about-card {
  min-height: 280px;
  padding: 26px;
  border: 1px solid var(--line);
  background: rgba(251, 247, 239, 0.56);
}

.about-card.dark {
  color: var(--paper-light);
  background:
    radial-gradient(circle at 85% 12%, rgba(177, 71, 50, 0.27), transparent 32%),
    var(--ink);
}

.about-number {
  display: block;
  color: rgba(177, 71, 50, 0.4);
  font-family: var(--display);
  font-size: 74px;
  line-height: 1;
}

.about-card.dark .about-number { color: rgba(247, 241, 229, 0.24); }

.about-card h3 {
  margin: 35px 0 10px;
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 500;
}

.about-card p {
  margin: 34px 0 0;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.65;
}

.about-card small {
  display: block;
  margin-top: 19px;
  color: rgba(247, 241, 229, 0.46);
  font-size: 11px;
  line-height: 1.8;
}

.about-card:not(.dark) p {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-grid article {
  padding: 27px;
  border-top: 2px solid var(--ink);
  background: rgba(251, 247, 239, 0.48);
}

.service-grid article:nth-child(2) { border-top-color: var(--jade); }
.service-grid article:nth-child(3) { border-top-color: var(--red); }

.service-grid article > span {
  color: var(--red);
  font-family: var(--serif);
  font-size: 13px;
}

.service-grid h3 {
  margin: 39px 0 12px;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
}

.service-grid p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.9;
}

.service-grid em {
  display: block;
  margin-top: 29px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 10px;
  font-style: normal;
}

.section-note {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 10px;
  text-align: right;
}

.activity-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.activity-card {
  position: relative;
  min-height: 330px;
  padding: 27px;
  overflow: hidden;
  color: var(--ink);
  background: #f0e6d7;
}

.activity-card.green {
  color: var(--paper-light);
  background: var(--jade);
}

.event-type {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.activity-card h3 {
  margin: 55px 0 16px;
  font-family: var(--serif);
  font-size: clamp(30px, 3.4vw, 45px);
  font-weight: 500;
  line-height: 1.3;
}

.activity-card p {
  font-size: 12px;
  opacity: 0.6;
}

.event-foot {
  position: absolute;
  left: 27px;
  bottom: 25px;
  padding-bottom: 3px;
  border-bottom: 1px solid currentColor;
  font-size: 11px;
  opacity: 0.7;
}

.contact {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 60px;
  align-items: start;
}

.contact-copy h2 {
  margin: 13px 0 19px;
  font-family: var(--serif);
  font-size: clamp(40px, 4.7vw, 66px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.contact-copy > p:last-child {
  max-width: 390px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
}

.contact-card {
  padding: 30px;
  border: 1px solid var(--line);
  background: rgba(251, 247, 239, 0.6);
}

.contact-card > div {
  display: grid;
  grid-template-columns: 105px 1fr;
  gap: 15px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.contact-card span {
  color: var(--muted);
  font-size: 10px;
}

.contact-card strong {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
}

.contact-note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.8;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px 40px;
  align-items: center;
  padding: 45px max(32px, calc((100vw - 1260px) / 2)) 27px;
  color: rgba(247, 241, 229, 0.64);
  background: #171c18;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand strong {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.footer-links {
  display: flex;
  gap: 21px;
  font-size: 10px;
}

.footer-meta {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 22px;
  border-top: 1px solid rgba(247, 241, 229, 0.1);
  color: rgba(247, 241, 229, 0.32);
  font-size: 9px;
}

.footer-meta a {
  color: rgba(247, 241, 229, 0.48);
}

.policy {
  width: min(760px, calc(100% - 48px));
  margin: 0 auto;
  padding: 90px 0 110px;
}

.policy h1 {
  margin: 18px 0 20px;
  font-family: var(--serif);
  font-size: clamp(45px, 7vw, 72px);
  font-weight: 500;
}

.policy h2 {
  margin: 39px 0 11px;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
}

.policy p {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 2;
}

.policy-lead {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.policy-date {
  margin-top: 45px;
  color: var(--muted);
  font-size: 10px;
}

@media (max-width: 950px) {
  .site-header {
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 24px 10px;
  }
  nav {
    order: 3;
    width: 100%;
    gap: 17px;
    overflow-x: auto;
    padding-top: 7px;
    border-top: 1px solid var(--line);
    white-space: nowrap;
  }
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    width: min(100% - 48px, 720px);
    gap: 50px;
  }
  .hero-art { min-height: 560px; width: min(600px, 100%); margin: 0 auto; }
  .art-paper { left: 11%; width: min(420px, 75%); }
  .section { width: min(100% - 48px, 720px); padding: 84px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 17px; }
  .about-grid { grid-template-columns: 1fr 1fr; }
  .about-card.dark { grid-column: 1 / -1; }
  .service-grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 32px; }
  .site-footer { padding-inline: 28px; }
}

@media (max-width: 600px) {
  .site-header { padding-inline: 16px; }
  .brand-name small { display: none; }
  .brand-seal { width: 37px; height: 41px; font-size: 23px; }
  .hero, .section, .statement { width: calc(100% - 32px); }
  .hero { padding-top: 45px; }
  .hero h1 { font-size: clamp(56px, 17vw, 82px); }
  .hero-lead { font-size: 14px; }
  .hero-links { align-items: flex-start; flex-direction: column; gap: 14px; }
  .hero-art { min-height: 470px; }
  .art-paper { left: 4%; width: 78%; padding: 21px; }
  .art-char { font-size: 142px; }
  .art-note { max-width: 160px; bottom: 22px; font-size: 9px; }
  .statement { padding: 18px 0 55px; }
  .statement p { font-size: 23px; }
  .section { padding: 66px 0; }
  .section-heading h2 { font-size: clamp(38px, 9vw, 51px); }
  .about-grid, .activity-row { grid-template-columns: 1fr; }
  .about-card.dark { grid-column: auto; }
  .activity-card { min-height: 300px; }
  .contact-card > div { grid-template-columns: 1fr; gap: 4px; }
  .site-footer { display: block; padding: 33px 20px 24px; }
  .footer-links { flex-wrap: wrap; margin-top: 22px; }
  .footer-meta { flex-direction: column; gap: 6px; margin-top: 24px; }
}