:root {
  --ink: #142522;
  --muted: #60726e;
  --line: #dbe4df;
  --paper: #fbfbf8;
  --white: #ffffff;
  --green: #173f36;
  --green-2: #286556;
  --gold: #c99b46;
  --gold-2: #e9d29a;
  --blue: #17385f;
  --shadow: 0 24px 70px rgba(13, 32, 28, 0.14);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 76px;
  padding: 14px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(20, 37, 34, 0.88);
  color: var(--white);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 178px;
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 19px;
  letter-spacing: 0;
}

.brand small {
  margin-top: 1px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 10px;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 3vw, 42px);
  color: rgba(255, 255, 255, 0.84);
  font-size: 15px;
}

.site-nav a:hover {
  color: var(--gold-2);
}

.header-action,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 4px;
  font-weight: 700;
  white-space: nowrap;
}

.header-action {
  padding: 0 20px;
  border: 1px solid rgba(233, 210, 154, 0.72);
  color: var(--gold-2);
}

.hero {
  position: relative;
  min-height: calc(100vh - 76px);
  overflow: hidden;
  isolation: isolate;
}

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

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(14, 33, 29, 0.94) 0%, rgba(14, 33, 29, 0.78) 40%, rgba(14, 33, 29, 0.34) 72%, rgba(14, 33, 29, 0.2) 100%),
    linear-gradient(0deg, rgba(11, 24, 23, 0.44), rgba(11, 24, 23, 0.04));
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: calc(100vh - 76px);
  max-width: 1180px;
  flex-direction: column;
  justify-content: center;
  padding: clamp(56px, 9vw, 110px) clamp(20px, 5vw, 72px);
  color: var(--white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--gold-2);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 670px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2.1vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.primary-button,
.secondary-button {
  padding: 0 28px;
}

.primary-button {
  background: linear-gradient(135deg, #e5c575, var(--gold));
  color: #173127;
  box-shadow: 0 18px 36px rgba(201, 155, 70, 0.24);
}

.secondary-button {
  border: 1px solid rgba(255, 255, 255, 0.36);
  color: rgba(255, 255, 255, 0.9);
}

.hero-stats {
  display: grid;
  max-width: 620px;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 60px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-stats div {
  padding: 22px 26px 22px 0;
}

.hero-stats dt {
  font-size: 25px;
  font-weight: 800;
}

.hero-stats dd {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.68);
}

.section {
  padding: clamp(68px, 9vw, 116px) clamp(20px, 5vw, 72px);
}

.section-heading {
  display: flex;
  max-width: 1180px;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin: 0 auto 34px;
}

.section-heading.compact {
  display: block;
  max-width: 820px;
  margin-bottom: 42px;
  text-align: center;
}

.section h2 {
  margin: 0;
  color: var(--green);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

.intro {
  background: var(--white);
}

.intro-grid {
  display: grid;
  max-width: 1180px;
  grid-template-columns: minmax(260px, 0.8fr) minmax(300px, 1.2fr);
  gap: clamp(32px, 7vw, 90px);
  margin: 0 auto;
  align-items: start;
}

.intro-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.program-grid,
.advantage-grid {
  display: grid;
  max-width: 1180px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 0 auto;
}

.program-card,
.advantage-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.program-card {
  min-height: 430px;
  padding: clamp(28px, 4vw, 44px);
  overflow: hidden;
  position: relative;
}

.program-card::after {
  position: absolute;
  right: -48px;
  bottom: -72px;
  width: 220px;
  height: 220px;
  border: 34px solid rgba(201, 155, 70, 0.14);
  border-radius: 50%;
  content: "";
}

.program-card.graduate::after {
  border-color: rgba(23, 56, 95, 0.14);
}

.card-tag {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
}

.program-card h3,
.advantage-grid h3,
.timeline h3 {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 25px;
  line-height: 1.24;
}

.program-card p,
.advantage-grid p,
.timeline p {
  margin: 0;
  color: var(--muted);
}

.program-card ul {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  color: #334943;
}

.program-card li {
  padding-left: 18px;
  position: relative;
}

.program-card li::before {
  position: absolute;
  left: 0;
  color: var(--gold);
  content: "•";
}

.system {
  background: #eef3ef;
}

.timeline {
  display: grid;
  max-width: 1180px;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  margin: 0 auto;
  background: var(--line);
  border: 1px solid var(--line);
}

.timeline article {
  min-height: 260px;
  padding: 28px 24px;
  background: var(--white);
}

.timeline span {
  display: block;
  margin-bottom: 48px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
}

.advantage-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.advantage-grid article {
  min-height: 220px;
  padding: 30px 26px;
}

.closing {
  background: var(--green);
  color: var(--white);
  text-align: center;
}

.closing h2 {
  max-width: 940px;
  margin-right: auto;
  margin-left: auto;
  color: var(--white);
}

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 28px clamp(20px, 5vw, 72px);
  background: #0f1d1b;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--gold-2);
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .intro-grid,
  .program-grid,
  .timeline,
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 68px;
    gap: 12px;
    padding: 12px 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .header-action {
    min-height: 38px;
    padding: 0 14px;
    font-size: 14px;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    min-height: calc(100vh - 68px);
    padding: 42px 18px;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(14, 33, 29, 0.96), rgba(14, 33, 29, 0.72));
  }

  .hero-stats {
    grid-template-columns: 1fr;
    margin-top: 38px;
  }

  .hero-stats div {
    padding: 16px 0;
  }

  .section {
    padding: 58px 18px;
  }

  .section-heading {
    display: block;
  }

  .timeline,
  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .timeline article {
    min-height: 0;
  }

  .timeline span {
    margin-bottom: 24px;
  }
}