:root {
  color-scheme: light;
  --ink: #1d2421;
  --ink-soft: #4c5752;
  --muted: #707b74;
  --line: rgba(42, 54, 49, 0.14);
  --paper: #f7f8f5;
  --paper-strong: #ffffff;
  --mist: #e7ede8;
  --teal: #4f746b;
  --sage: #9caf9e;
  --gold: #b38f58;
  --clay: #a96f5b;
  --shadow: 0 22px 60px rgba(29, 36, 33, 0.12);
  --shadow-soft: 0 12px 34px rgba(29, 36, 33, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

[hidden] {
  display: none !important;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  padding: 0 40px;
  color: #f8faf7;
  background: linear-gradient(180deg, rgba(22, 31, 28, 0.58), rgba(22, 31, 28, 0));
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.site-header[data-elevated="true"] {
  color: var(--ink);
  background: rgba(247, 248, 245, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px);
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  overflow: visible;
}

.brand-mark img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

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

.brand strong {
  font-family: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: 19px;
  font-weight: 900;
  line-height: 1.2;
}

.brand small {
  margin-top: 3px;
  font-size: 11px;
  color: currentColor;
  opacity: 0.74;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}

.main-nav a {
  opacity: 0.82;
}

.main-nav a:hover {
  opacity: 1;
}

.nav-cta {
  padding: 10px 16px;
  border: 1px solid currentColor;
  border-radius: 8px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 8px;
  color: inherit;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 86vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #f8faf7;
}

.hero-bg,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-bg {
  object-fit: cover;
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(20, 27, 25, 0.88), rgba(20, 27, 25, 0.54) 38%, rgba(20, 27, 25, 0.08)),
    linear-gradient(180deg, rgba(20, 27, 25, 0.12), rgba(20, 27, 25, 0.52));
}

.hero-inner {
  position: relative;
  width: min(1120px, calc(100% - 48px));
  margin: 96px auto 130px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero h1 {
  width: min(760px, 100%);
  margin: 0;
  font-size: 60px;
  line-height: 1.08;
  font-weight: 700;
}

.keep {
  white-space: nowrap;
}

.hero-copy {
  width: min(680px, 100%);
  margin: 26px 0 0;
  color: rgba(248, 250, 247, 0.82);
  font-size: 18px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
}

.btn.primary {
  background: #f8faf7;
  color: var(--ink);
}

.btn.ghost {
  border: 1px solid rgba(248, 250, 247, 0.58);
  color: #f8faf7;
  backdrop-filter: blur(10px);
}

.glass-panel {
  position: absolute;
  left: 50%;
  bottom: 28px;
  width: min(1120px, calc(100% - 48px));
  transform: translateX(-50%);
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 8px;
  background: rgba(250, 252, 249, 0.12);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.hero-metrics article {
  padding: 24px 30px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-metrics article:last-child {
  border-right: 0;
}

.hero-metrics strong {
  display: block;
  font-size: 36px;
  line-height: 1;
}

.hero-metrics span {
  display: block;
  margin-top: 10px;
  color: rgba(248, 250, 247, 0.72);
  font-size: 13px;
}

.section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 108px 0;
  scroll-margin-top: 88px;
}

.band {
  width: 100%;
  max-width: none;
  padding-left: max(24px, calc((100vw - 1180px) / 2));
  padding-right: max(24px, calc((100vw - 1180px) / 2));
  background: linear-gradient(180deg, #eef3ef, #f7f8f5);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 0.58fr);
  gap: 80px;
  margin-bottom: 48px;
}

.section-head.compact {
  display: block;
  width: min(720px, 100%);
}

.section-head h2 {
  grid-column: 1;
  margin: 0;
  font-size: 38px;
  line-height: 1.22;
}

.section-head .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.section-head p:not(.eyebrow) {
  grid-column: 2;
  align-self: end;
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.75;
}

.filter-head {
  display: block;
  width: min(760px, 100%);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.filter-head .eyebrow {
  margin-bottom: 10px;
}

.filter-head h2 {
  margin: 0;
}

.filter-head p:not(.eyebrow) {
  width: min(680px, 100%);
  margin: 18px auto 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 380px;
  gap: 34px;
  align-items: stretch;
}

.statement-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.statement-row article,
.dashboard,
.business-card,
.course-card,
.course-category,
.mentor-card,
.team-card,
.case-grid article,
.donut-card,
.stat-card,
.news-card,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-soft);
}

.statement-row article {
  padding: 28px;
}

.statement-row span,
.business-card .card-index,
.course-card span,
.mentor-card span,
.case-grid span,
.stat-card span,
.dashboard-top span {
  display: block;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.statement-row strong {
  display: block;
  margin-top: 14px;
  font-size: 22px;
  line-height: 1.45;
}

.values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.values article {
  padding: 22px;
  border-left: 1px solid var(--line);
  background: rgba(231, 237, 232, 0.55);
}

.values b {
  display: block;
  font-size: 16px;
}

.values p {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.dashboard {
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.56)),
    var(--mist);
}

.dashboard-top {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.dashboard-top strong {
  grid-row: span 2;
  color: var(--gold);
  font-size: 72px;
  line-height: 0.9;
}

.dashboard-top small {
  color: var(--muted);
}

.bar-chart {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.bar-chart div {
  position: relative;
  display: grid;
  grid-template-columns: 90px 1fr 22px;
  align-items: center;
  gap: 12px;
  min-height: 24px;
  color: var(--ink-soft);
  font-size: 13px;
}

.bar-chart div::before {
  content: "";
  grid-column: 2;
  grid-row: 1;
  justify-self: start;
  width: var(--bar);
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

.bar-chart span {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
}

.bar-chart i {
  grid-column: 3;
  grid-row: 1;
  font-style: normal;
  font-weight: 800;
}

.business-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 18px;
}

.business-card {
  min-height: 260px;
  padding: 28px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.business-card:hover,
.course-card:hover,
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.business-card.featured {
  grid-row: span 2;
  min-height: 540px;
  color: #f8faf7;
  background:
    linear-gradient(160deg, rgba(34, 47, 43, 0.96), rgba(79, 116, 107, 0.9)),
    var(--teal);
}

.business-card h3,
.course-card h3,
.course-card h4,
.mentor-card h3,
.case-grid h3,
.news-card h3,
.donut-card h3 {
  margin: 14px 0 0;
  font-size: 23px;
  line-height: 1.3;
}

.business-card p,
.course-card p,
.case-grid p,
.news-card p,
.donut-card p,
.stat-card p {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.business-card.featured p,
.business-card.featured a,
.business-card.featured .card-index {
  color: rgba(248, 250, 247, 0.78);
}

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

.business-card li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(248, 250, 247, 0.18);
  color: rgba(248, 250, 247, 0.86);
}

.business-card a {
  display: inline-block;
  margin-top: 24px;
  color: var(--teal);
  font-weight: 800;
}

.visual-data {
  padding-top: 86px;
}

.data-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr 0.75fr;
  gap: 18px;
}

.donut-card,
.stat-card {
  padding: 28px;
}

.donut-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  align-items: center;
}

.donut {
  width: 180px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(var(--teal) 0 34%, var(--gold) 34% 57%, var(--sage) 57% 80%, var(--clay) 80% 100%);
  mask: radial-gradient(circle, transparent 49%, #000 50%);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 13px;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.legend .teal { background: var(--teal); }
.legend .gold { background: var(--gold); }
.legend .sage { background: var(--sage); }
.legend .clay { background: var(--clay); }

.stat-card strong {
  display: block;
  margin-top: 18px;
  color: var(--teal);
  font-size: 62px;
  line-height: 0.9;
}

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

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  width: fit-content;
  max-width: 100%;
  margin: -18px auto 34px;
  padding: 14px;
  border: 1px solid rgba(42, 54, 49, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
}

.filter-pill {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(42, 54, 49, 0.1);
  border-radius: 8px;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 8px 18px rgba(29, 36, 33, 0.06);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.filter-pill:hover {
  transform: translateY(-1px);
  color: var(--ink);
}

.filter-pill.is-active {
  color: #ffffff;
  background: #182747;
  border-color: #182747;
  box-shadow: 0 12px 24px rgba(24, 39, 71, 0.22);
}

.course-catalog {
  display: grid;
  gap: 20px;
}

.course-category {
  padding: 26px;
  background: rgba(255, 255, 255, 0.64);
}

.category-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.category-head span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(79, 116, 107, 0.24);
  border-radius: 8px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  background: rgba(231, 237, 232, 0.58);
}

.category-head h3 {
  margin: 0;
  font-size: 24px;
}

.category-head small {
  color: var(--muted);
  font-weight: 800;
}

.course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 24px;
  overflow: hidden;
}

.course-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, #182747, var(--gold));
}

.course-card.premium {
  background:
    linear-gradient(180deg, rgba(179, 143, 88, 0.14), rgba(255, 255, 255, 0.78)),
    #ffffff;
}

.course-card footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid rgba(42, 54, 49, 0.08);
}

.course-card b {
  color: var(--gold);
  font-size: 24px;
}

.course-card footer em {
  color: var(--ink-soft);
  font-size: 13px;
  font-style: normal;
}

.course-points {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}

.course-points li {
  position: relative;
  padding-left: 14px;
}

.course-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
}

.faculty-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.faculty-card {
  display: grid;
  justify-items: center;
  min-height: 218px;
  padding: 28px 22px 24px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow-soft);
}

.faculty-avatar {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border: 1px solid rgba(42, 54, 49, 0.12);
  border-radius: 50%;
  overflow: hidden;
  background: #eef2ed;
  box-shadow: 0 10px 22px rgba(29, 36, 33, 0.1);
}

.faculty-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.faculty-avatar.initial {
  color: #ffffff;
  background: linear-gradient(135deg, #182747, var(--teal));
  font-size: 24px;
  font-weight: 900;
}

.faculty-card h3 {
  margin: 14px 0 0;
  font-size: 18px;
  line-height: 1.25;
}

.faculty-card p {
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.faculty-card span {
  margin-top: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(231, 237, 232, 0.7);
  font-size: 12px;
  font-weight: 700;
}

.team-directory {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.team-card {
  padding: 26px;
  background: rgba(255, 255, 255, 0.72);
}

.team-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.team-card-head span {
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.team-card-head strong {
  color: var(--gold);
  font-size: 32px;
  line-height: 1;
}

.member-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.member-list p {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 14px;
  margin: 0;
  padding: 12px 0;
  border-bottom: 1px solid rgba(42, 54, 49, 0.08);
}

.member-list p:last-child {
  border-bottom: 0;
}

.member-list b {
  font-size: 15px;
}

.member-list em {
  color: var(--ink-soft);
  font-size: 13px;
  font-style: normal;
  line-height: 1.65;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.case-grid article {
  min-height: 230px;
  padding: 26px;
}

.partners-section {
  padding-top: 88px;
  padding-bottom: 88px;
}

.logo-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.logo-wall span {
  display: grid;
  place-items: center;
  min-height: 90px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.66);
  box-shadow: 0 10px 26px rgba(29, 36, 33, 0.05);
  font-size: 18px;
  font-weight: 800;
}

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

.news-card {
  min-height: 230px;
  padding: 28px;
}

.news-card time {
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
}

.contact-section {
  width: 100vw;
  max-width: none;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding: 120px max(24px, calc((100vw - 1180px) / 2));
  color: #f8faf7;
  background:
    linear-gradient(115deg, rgba(16, 31, 58, 0.98), rgba(16, 31, 58, 0.9) 48%, rgba(24, 39, 71, 0.8)),
    url("./assets/hero-campus.webp") center / cover no-repeat;
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(5, 13, 29, 0.38)),
    radial-gradient(ellipse at 80% 78%, rgba(211, 178, 116, 0.16), transparent 42%);
  pointer-events: none;
}

.contact-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(430px, 0.85fr);
  gap: 92px;
  align-items: center;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 0;
  color: #f8faf7;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.contact-copy .eyebrow {
  margin-bottom: 18px;
  color: #d0ad70;
  letter-spacing: 6px;
}

.contact-copy h2 {
  margin: 0;
  font-family: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: 44px;
  line-height: 1.18;
  font-weight: 900;
}

.contact-copy h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  margin-top: 22px;
  background: #d0ad70;
}

.contact-copy > p {
  width: min(620px, 100%);
  margin: 34px 0 0;
  color: rgba(248, 250, 247, 0.72);
  font-size: 16px;
  line-height: 1.9;
}

.contact-methods {
  display: grid;
  gap: 18px;
  margin-top: 38px;
}

.contact-methods article {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  align-items: center;
}

.contact-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: #d0ad70;
  background: rgba(255, 255, 255, 0.06);
}

.contact-methods small {
  display: block;
  color: rgba(248, 250, 247, 0.48);
  font-size: 13px;
}

.contact-methods a,
.contact-methods strong {
  display: block;
  margin-top: 4px;
  color: #ffffff;
  font-size: 15px;
  line-height: 1.5;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(31, 50, 86, 0.74);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(18px);
}

.contact-form h3 {
  margin: 0;
  font-size: 22px;
}

.contact-form > p {
  margin: -8px 0 8px;
  color: rgba(248, 250, 247, 0.54);
  font-size: 14px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form label span {
  color: rgba(248, 250, 247, 0.62);
  font-size: 13px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  font: inherit;
  font-size: 14px;
  outline: none;
}

.contact-form input,
.contact-form select {
  min-height: 52px;
  padding: 0 16px;
}

.contact-form textarea {
  min-height: 110px;
  resize: vertical;
  padding: 14px 16px;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(248, 250, 247, 0.36);
}

.contact-form select {
  appearance: none;
}

.contact-form option {
  color: var(--ink);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: rgba(208, 173, 112, 0.72);
  box-shadow: 0 0 0 3px rgba(208, 173, 112, 0.16);
}

.submit-btn {
  min-height: 54px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  background: #c7a363;
  font: inherit;
  font-size: 15px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.16);
}

.submit-btn:hover {
  background: #d2b170;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px max(24px, calc((100vw - 1180px) / 2));
  border-top: 1px solid rgba(248, 250, 247, 0.1);
  color: rgba(248, 250, 247, 0.65);
  font-size: 13px;
  background: rgb(16, 31, 58);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .main-nav {
    gap: 16px;
  }

  .hero h1 {
    font-size: 48px;
  }

  .section-head,
  .intro-grid,
  .data-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .contact-panel {
    gap: 46px;
  }

  .section-head {
    gap: 18px;
  }

  .section-head p:not(.eyebrow) {
    grid-column: 1;
    width: min(720px, 100%);
  }

  .business-grid,
  .course-grid,
  .faculty-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .business-card.featured {
    grid-row: auto;
    min-height: 360px;
  }

  .values,
  .case-grid,
  .logo-wall {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .site-header {
    height: 68px;
    padding: 0 18px;
  }

  .brand small {
    display: none;
  }

  .nav-toggle {
    display: block;
    position: fixed;
    top: 12px;
    right: 18px;
    z-index: 60;
    background: rgba(29, 36, 33, 0.12);
    backdrop-filter: blur(10px);
  }

  .main-nav {
    position: fixed;
    inset: 0;
    display: grid;
    align-content: center;
    gap: 22px;
    padding: 80px 28px;
    color: var(--ink);
    background: rgba(247, 248, 245, 0.96);
    backdrop-filter: blur(18px);
    transform: translateX(100%);
    transition: transform 220ms ease;
  }

  body.nav-open .main-nav {
    transform: translateX(0);
  }

  .main-nav a {
    font-size: 24px;
    font-weight: 800;
  }

  .nav-cta {
    width: fit-content;
  }

  .hero {
    min-height: 820px;
  }

  .hero-inner {
    width: min(calc(100% - 36px), 680px);
    margin-top: 92px;
    margin-bottom: 250px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-metrics article {
    padding: 20px;
  }

  .hero-metrics article:nth-child(2) {
    border-right: 0;
  }

  .hero-metrics article:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .section {
    width: min(calc(100% - 36px), 680px);
    padding: 76px 0;
  }

  .contact-section {
    width: 100%;
    max-width: none;
    padding: 88px 18px;
  }

  .band {
    width: 100%;
    padding-left: 18px;
    padding-right: 18px;
  }

  .section-head h2,
  .contact-panel h2 {
    font-size: 30px;
  }

  .statement-row,
  .values,
  .business-grid,
  .course-grid,
  .faculty-grid,
  .case-grid,
  .logo-wall,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .filter-tabs {
    justify-content: flex-start;
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 12px;
  }

  .filter-pill {
    flex: 0 0 auto;
  }

  .donut-card {
    grid-template-columns: 1fr;
  }

  .donut {
    width: 150px;
  }

  .faculty-card {
    min-height: 210px;
  }

  .contact-panel {
    padding: 0;
  }

  .contact-copy h2 {
    font-size: 34px;
  }

  .contact-form {
    padding: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
    padding: 28px 18px;
  }
}

@media (max-width: 480px) {
  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-mark img {
    width: 33px;
    height: 33px;
  }

  .brand strong {
    font-size: 15px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-metrics strong {
    font-size: 28px;
  }

  .hero-actions {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .course-card footer {
    display: grid;
  }
}

/* Reference layout refresh based on hzjiaoyu.cn */
:root {
  --ink: #1a1a2e;
  --ink-soft: #6b7280;
  --muted: #8a90a0;
  --line: rgba(26, 26, 46, 0.08);
  --paper: #fafaf8;
  --paper-strong: #ffffff;
  --mist: #f5f4f0;
  --teal: #1b2a4a;
  --sage: #4a6fa5;
  --gold: #c9a96e;
  --clay: #2d3e5f;
  --shadow: 0 24px 60px rgba(26, 26, 46, 0.12);
  --shadow-soft: 0 14px 36px rgba(26, 26, 46, 0.08);
}

body {
  background: var(--paper);
  color: var(--ink);
}

.site-header {
  height: 78px;
  padding: 0 46px;
  background: linear-gradient(180deg, rgba(27, 42, 74, 0.42), rgba(27, 42, 74, 0));
}

.site-header[data-elevated="true"] {
  color: var(--ink);
  background: rgba(250, 250, 248, 0.88);
}

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 128px 0 86px;
  text-align: center;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 150px;
  background: linear-gradient(0deg, var(--paper), rgba(250, 250, 248, 0));
  pointer-events: none;
}

.hero-scrim {
  background:
    linear-gradient(180deg, rgba(27, 42, 74, 0.7), rgba(27, 42, 74, 0.54) 45%, rgba(27, 42, 74, 0.82)),
    radial-gradient(circle at 72% 18%, rgba(201, 169, 110, 0.14), transparent 34%),
    radial-gradient(circle at 18% 88%, rgba(74, 111, 165, 0.18), transparent 36%);
}

.hero-inner {
  z-index: 1;
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
  text-align: center;
}

.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 30px;
  padding: 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0.02em;
  backdrop-filter: blur(16px);
}

.hero .eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(201, 169, 110, 0.14);
}

.hero h1 {
  width: min(980px, 100%);
  margin: 0 auto;
  font-family: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: 0;
}

.hero-subtitle {
  display: block;
  margin-top: 16px;
  color: var(--gold);
  font-size: clamp(20px, 2.6vw, 34px);
  font-weight: 600;
  white-space: normal;
  overflow-wrap: anywhere;
}

.subtitle-tail {
  display: inline;
}

.hero-copy {
  width: min(720px, 100%);
  margin: 28px auto 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.9;
}

.hero-actions {
  justify-content: center;
  margin-top: 44px;
}

.btn {
  min-height: 54px;
  padding: 0 30px;
  border-radius: 8px;
}

.btn.primary {
  color: #ffffff;
  background: var(--gold);
  box-shadow: 0 18px 36px rgba(201, 169, 110, 0.2);
}

.btn.ghost {
  border-color: rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.04);
}

.glass-panel {
  position: relative;
  z-index: 1;
  left: auto;
  bottom: auto;
  width: min(880px, calc(100% - 48px));
  margin: 58px auto 0;
  transform: none;
  border-color: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.18);
}

.hero-metrics article {
  padding: 25px 28px;
}

.hero-metrics strong {
  font-size: clamp(30px, 3.4vw, 42px);
  font-family: Arial, sans-serif;
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.46);
}

.section {
  width: min(1280px, calc(100% - 48px));
  padding: 96px 0;
}

.band {
  background: rgba(245, 244, 240, 0.5);
}

.section-head,
.section-head.compact,
.filter-head {
  display: block;
  width: min(700px, 100%);
  margin: 0 auto 64px;
  text-align: center;
}

.section-head .eyebrow,
.section-head.compact .eyebrow,
.filter-head .eyebrow {
  margin: 0;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.section-head h2 {
  margin: 12px 0 0;
  font-family: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
  font-weight: 900;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  margin: 22px auto 0;
  background: var(--gold);
}

.section-head p:not(.eyebrow) {
  width: min(660px, 100%);
  margin: 24px auto 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}

.statement-row article,
.dashboard,
.business-card,
.course-card,
.course-category,
.core-mentor-card,
.team-overview article,
.faculty-card,
.case-grid article,
.donut-card,
.stat-card,
.news-card,
.logo-wall span {
  border-color: var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
}

.intro-grid {
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 36px;
}

.values article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(245, 244, 240, 0.68);
}

.dashboard {
  background: #ffffff;
}

.dashboard-top strong,
.stat-card strong,
.course-card b {
  color: var(--gold);
}

.bar-chart div::before {
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

.business-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.business-card {
  position: relative;
  min-height: 270px;
  padding: 26px;
}

.business-card::before,
.core-mentor-card::before,
.case-grid article::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

.business-card.featured {
  grid-row: auto;
  min-height: 270px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
}

.business-card.featured p,
.business-card.featured .card-index {
  color: var(--ink-soft);
}

.business-card.featured a {
  color: var(--teal);
}

.business-card.featured li {
  color: var(--ink-soft);
  border-bottom-color: var(--line);
}

.business-card h3,
.course-card h4,
.case-grid h3,
.news-card h3,
.donut-card h3 {
  color: var(--ink);
}

.visual-data {
  width: 100%;
  max-width: none;
  padding: 96px max(24px, calc((100vw - 1280px) / 2));
  color: #ffffff;
  background:
    linear-gradient(180deg, rgba(27, 42, 74, 0.76), rgba(27, 42, 74, 0.76)),
    url("./assets/hero-campus.webp") center / cover no-repeat;
}

.visual-data .section-head h2 {
  color: #ffffff;
}

.visual-data .section-head p:not(.eyebrow),
.visual-data .donut-card p,
.visual-data .stat-card p {
  color: rgba(255, 255, 255, 0.58);
}

.visual-data .donut-card,
.visual-data .stat-card {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: none;
  backdrop-filter: blur(18px);
}

.visual-data .stat-card span,
.visual-data .donut-card h3 {
  color: #ffffff;
}

.filter-tabs {
  margin: -28px auto 38px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.filter-pill {
  border-radius: 8px;
}

.course-card {
  min-height: 286px;
  background: #ffffff;
}

.core-mentor-wrap {
  margin-bottom: 54px;
}

.core-mentor-wrap > h3,
.subsection-title h3 {
  margin: 0 0 26px;
  font-family: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  color: var(--ink);
  font-size: 22px;
  text-align: center;
}

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

.core-mentor-card {
  position: relative;
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 18px;
  align-items: center;
  min-height: 180px;
  padding: 24px;
  overflow: hidden;
}

.core-photo {
  width: 86px;
  height: 86px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--mist);
  box-shadow: 0 14px 28px rgba(26, 26, 46, 0.12);
}

.core-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.core-mentor-card span {
  display: inline-block;
  margin-bottom: 7px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
}

.core-mentor-card h4 {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
}

.core-mentor-card p {
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.core-mentor-card strong {
  display: inline-block;
  margin-top: 12px;
  padding: 5px 9px;
  border-radius: 8px;
  color: var(--teal);
  background: rgba(27, 42, 74, 0.06);
  font-size: 12px;
}

.team-overview {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 54px;
}

.team-overview article {
  min-height: 114px;
  padding: 18px 14px;
  text-align: center;
}

.team-overview strong,
.team-overview span {
  display: block;
}

.team-overview strong {
  color: var(--ink);
  font-size: 15px;
}

.team-overview span {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.55;
}

.subsection-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 22px;
}

.subsection-title h3 {
  margin: 0;
}

.subsection-title span {
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--gold);
  background: rgba(201, 169, 110, 0.1);
  font-size: 12px;
  font-weight: 800;
}

.faculty-card {
  min-height: 205px;
  padding: 24px 20px 22px;
}

.faculty-avatar {
  width: 64px;
  height: 64px;
}

.case-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-grid article {
  position: relative;
  min-height: 210px;
  overflow: hidden;
}

.partners-section {
  background: rgba(245, 244, 240, 0.5);
}

.logo-wall {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.logo-wall span {
  min-height: 96px;
  color: var(--ink-soft);
  font-size: 15px;
}

.news-grid {
  grid-template-columns: 1.12fr 1fr;
  align-items: stretch;
}

.news-card {
  min-height: 150px;
}

.featured-news {
  grid-row: span 3;
  min-height: 486px;
  color: #ffffff;
  background:
    radial-gradient(circle at 28% 38%, rgba(201, 169, 110, 0.18), transparent 36%),
    linear-gradient(135deg, var(--teal), var(--clay));
}

.featured-news h3,
.featured-news p {
  color: #ffffff;
}

.featured-news time {
  color: rgba(255, 255, 255, 0.68);
}

.contact-section {
  width: 100vw;
  max-width: none;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  background:
    linear-gradient(115deg, rgba(27, 42, 74, 0.95), rgba(27, 42, 74, 0.9) 48%, rgba(27, 42, 74, 0.76)),
    url("./assets/hero-campus.webp") center / cover no-repeat;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.contact-form {
  border-radius: 8px;
  background: rgba(31, 50, 86, 0.76);
}

@media (max-width: 1180px) {
  .business-grid,
  .team-overview {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .core-mentor-grid,
  .logo-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header {
    height: 68px;
    padding: 0 18px;
  }

  .hero {
    min-height: 760px;
    padding: 104px 0 56px;
  }

  .hero-inner {
    width: min(calc(100% - 36px), 680px);
    margin: 0 auto;
  }

  .hero h1 {
    font-size: 34px;
    overflow-wrap: anywhere;
  }

  .hero-subtitle {
    font-size: 18px;
    line-height: 1.45;
  }

  .subtitle-tail {
    display: block;
  }

  .hero-copy {
    font-size: 15px;
  }

  .hero-metrics strong {
    font-size: 24px;
  }

  .glass-panel {
    width: min(calc(100% - 36px), 680px);
    margin-top: 38px;
  }

  .section {
    width: min(calc(100% - 36px), 680px);
    padding: 76px 0;
  }

  .visual-data,
  .band,
  .contact-section {
    width: 100vw;
    max-width: none;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    padding-left: 18px;
    padding-right: 18px;
  }

  .business-grid,
  .core-mentor-grid,
  .team-overview,
  .case-grid,
  .logo-wall,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .core-mentor-card {
    grid-template-columns: 78px 1fr;
  }

  .core-photo {
    width: 78px;
    height: 78px;
  }

  .featured-news {
    grid-row: auto;
    min-height: 260px;
  }
}

@media (max-width: 480px) {
  .hero .eyebrow {
    max-width: 100%;
    justify-content: center;
    padding: 9px 12px;
    font-size: 12px;
    line-height: 1.4;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 17px;
  }

  .hero-metrics article {
    padding: 18px 12px;
  }
}

@media (max-width: 600px) {
  .hero-inner,
  .glass-panel {
    width: min(354px, calc(100% - 36px));
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 17px;
  }

  .hero-copy {
    width: 100%;
    font-size: 14px;
  }

  .hero-metrics strong {
    font-size: 23px;
  }

  .hero-metrics article {
    padding: 17px 10px;
  }
}