:root {
  --paper: #f6f1e7;
  --paper-deep: #e6dcc7;
  --ink: #1d1b18;
  --muted: #5e584f;
  --line: rgba(29, 27, 24, 0.15);
  --line-strong: rgba(29, 27, 24, 0.34);
  --accent: #bf5a33;
  --accent-cool: #345d77;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(191, 90, 51, 0.16), transparent 28%),
    radial-gradient(circle at right 14% bottom 18%, rgba(52, 93, 119, 0.13), transparent 22%),
    linear-gradient(180deg, var(--paper) 0%, #f7f3eb 48%, var(--paper-deep) 100%);
  padding: clamp(18px, 3.4vw, 42px);
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(29, 27, 24, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 27, 24, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.34), transparent 88%);
  pointer-events: none;
}

a {
  color: inherit;
}

.page {
  position: relative;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  isolation: isolate;
}

.page::before {
  content: attr(data-mark);
  position: absolute;
  top: clamp(84px, 12vw, 132px);
  right: 0;
  font-family: "Avenir Next Condensed", "Arial Narrow", "PingFang SC", sans-serif;
  font-size: clamp(4.2rem, 16vw, 11rem);
  line-height: 0.88;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(29, 27, 24, 0.05);
  white-space: nowrap;
  pointer-events: none;
  z-index: -1;
}

.site-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px 40px;
  align-items: end;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line-strong);
}

.brand-wrap {
  display: grid;
  gap: 8px;
}

.brand {
  width: fit-content;
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
}

.site-tagline {
  margin: 0;
  max-width: 32ch;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
}

.site-nav a {
  position: relative;
  padding: 6px 0 10px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  color: var(--ink);
  outline: none;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(0.55);
}

.site-nav a.active::after {
  transform: scaleX(1);
  background: var(--accent);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Times New Roman", serif;
  font-size: clamp(3.2rem, 10vw, 7rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(220px, 0.75fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: end;
  padding: clamp(34px, 6vw, 80px) 0 clamp(48px, 8vw, 104px);
}

.hero-copy h1 {
  max-width: 9ch;
}

.lead {
  margin: 20px 0 0;
  max-width: 40ch;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.9;
}

.contact-rail {
  display: grid;
  gap: 14px;
  align-content: end;
  padding-left: 22px;
  border-left: 3px solid var(--accent);
}

.contact-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.mail {
  font-size: clamp(1.26rem, 2vw, 1.72rem);
  line-height: 1.25;
  text-decoration: none;
  word-break: break-word;
}

.mail:hover,
.mail:focus-visible {
  color: var(--accent);
  outline: none;
}

.contact-note {
  margin: 0;
  max-width: 24ch;
  color: var(--muted);
  line-height: 1.7;
}

.document {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 82px);
  padding-top: clamp(30px, 5vw, 56px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.document-aside {
  display: grid;
  gap: 26px;
  align-content: start;
  position: sticky;
  top: 24px;
}

.document-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.meta-list {
  display: grid;
  gap: 18px;
}

.meta-item {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.meta-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.meta-value {
  font-size: 0.96rem;
  line-height: 1.7;
}

.meta-value a,
.section-block a {
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.meta-value a:hover,
.meta-value a:focus-visible,
.section-block a:hover,
.section-block a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
  outline: none;
}

.document-main {
  min-width: 0;
}

.document-title {
  max-width: 10ch;
  margin-bottom: 22px;
}

.intro {
  margin: 0 0 30px;
  max-width: 58ch;
  padding-left: 22px;
  border-left: 2px solid var(--ink);
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.85;
}

.sections {
  counter-reset: section;
}

.section-block {
  display: grid;
  grid-template-columns: minmax(88px, 110px) minmax(0, 1fr);
  gap: 12px 28px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.section-block::before {
  counter-increment: section;
  content: counter(section, decimal-leading-zero);
  padding-top: 5px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.section-block h2 {
  margin: 0 0 10px;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
  font-weight: 600;
}

.section-block p,
.section-block li {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.82;
}

.section-block p + p {
  margin-top: 12px;
}

.section-block ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

.section-block li + li {
  margin-top: 8px;
}

@media (max-width: 920px) {
  .document {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .document-aside {
    position: static;
  }

  .document-title {
    max-width: none;
  }
}

@media (max-width: 720px) {
  body {
    padding: 16px;
  }

  .page::before {
    top: 106px;
    font-size: 22vw;
  }

  .site-header {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 18px;
  }

  .hero {
    grid-template-columns: 1fr;
    align-items: start;
  }

  h1 {
    font-size: clamp(2.9rem, 18vw, 4.9rem);
  }

  .contact-rail {
    padding-left: 18px;
  }

  .section-block {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .section-block::before {
    padding-top: 0;
  }
}