:root {
  --ink: #182321;
  --muted: #5c6865;
  --paper: #f7f3ec;
  --paper-2: #fffaf1;
  --line: rgba(24, 35, 33, 0.14);
  --green: #183a37;
  --green-2: #2d655f;
  --gold: #d59736;
  --coral: #c95d43;
  --white: #fffdf8;
  --shadow: 0 18px 50px rgba(24, 35, 33, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 clamp(20px, 5vw, 64px);
  color: var(--white);
  transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(255, 250, 241, 0.94);
  box-shadow: 0 10px 30px rgba(24, 35, 33, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-size: 0.82rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  outline: none;
}

.site-header.is-scrolled .site-nav a:hover,
.site-header.is-scrolled .site-nav a:focus-visible,
.site-header.is-open .site-nav a:hover,
.site-header.is-open .site-nav a:focus-visible {
  background: rgba(24, 58, 55, 0.08);
}

.nav-toggle {
  display: none;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid currentColor;
  border-radius: 8px;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.nav-toggle svg,
.button svg,
.text-link svg,
.quick-facts svg,
.contact-panel svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  stroke-width: 2;
}

.hero {
  position: relative;
  min-height: min(760px, 84svh);
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media {
  z-index: -2;
  background-image: url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=2200&q=82");
  background-position: center;
  background-size: cover;
}

.hero-shade {
  z-index: -1;
  background: linear-gradient(90deg, rgba(12, 23, 22, 0.76) 0%, rgba(12, 23, 22, 0.44) 48%, rgba(12, 23, 22, 0.1) 100%);
}

.hero-content {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding-top: 48px;
  color: var(--white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3.3rem, 8vw, 6.8rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(255, 253, 248, 0.9);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid rgba(255, 253, 248, 0.7);
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  border-color: var(--gold);
  color: #201610;
  background: var(--gold);
}

.button.ghost {
  color: var(--white);
  background: rgba(255, 253, 248, 0.08);
  backdrop-filter: blur(8px);
}

.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.contact-panel a:hover,
.contact-panel a:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.section-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.intro-section,
.notes-section,
.contact-section {
  padding: clamp(58px, 9vw, 104px) 0;
}

.intro-section {
  background: var(--paper-2);
}

.intro-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(280px, 1fr);
  gap: clamp(28px, 7vw, 84px);
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: 0;
}

.intro-copy p,
.contact-copy,
.note-card p {
  margin: 0;
  color: var(--muted);
}

.quick-facts {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.quick-facts li {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 14px;
  border-left: 3px solid var(--gold);
  background: rgba(213, 151, 54, 0.1);
  font-weight: 700;
}

.quick-facts svg {
  color: var(--coral);
}

.notes-section {
  background: #edf3f1;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 30px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  color: var(--green-2);
  font-weight: 900;
  transition: transform 160ms ease;
}

.note-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.note-card {
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.note-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--green);
  background: rgba(45, 101, 95, 0.12);
  font-size: 0.82rem;
  font-weight: 900;
}

.note-card h3 {
  margin: 18px 0 12px;
  font-size: 1.22rem;
  line-height: 1.35;
  letter-spacing: 0;
}

.contact-section {
  background: var(--paper-2);
}

.contact-copy {
  max-width: 560px;
  margin-top: 18px;
}

.contact-panel {
  display: grid;
  gap: 12px;
}

.contact-panel a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--green);
  font-weight: 900;
  transition: transform 160ms ease, border-color 160ms ease;
}

.contact-panel a:hover,
.contact-panel a:focus-visible {
  border-color: rgba(45, 101, 95, 0.38);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  padding: 28px 20px;
  color: rgba(255, 253, 248, 0.84);
  background: var(--green);
  font-size: 0.95rem;
}

@media (max-width: 820px) {
  .site-header {
    min-height: 64px;
    padding: 0 18px;
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 12px;
    right: 12px;
    display: none;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 250, 241, 0.98);
    color: var(--ink);
    box-shadow: var(--shadow);
  }

  .site-header.is-open .site-nav {
    display: grid;
  }

  .site-nav a {
    min-height: 44px;
  }

  .hero {
    min-height: 82svh;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(12, 23, 22, 0.8) 0%, rgba(12, 23, 22, 0.58) 100%);
  }

  .hero-content {
    width: min(100% - 32px, 640px);
    padding-top: 32px;
  }

  .hero h1 {
    font-size: clamp(3.1rem, 17vw, 4.8rem);
  }

  .intro-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .note-list {
    grid-template-columns: 1fr;
  }

  .note-card {
    min-height: 0;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .button {
    width: 100%;
  }

  .section-shell {
    width: min(100% - 32px, 1120px);
  }

  .contact-panel a {
    overflow-wrap: anywhere;
  }
}