:root {
  --bg: #fffdfb;
  --surface: #ffffff;
  --surface-soft: #f8f9fd;
  --surface-accent: #f4f7ff;
  --line: #ece7e2;
  --line-strong: #d8dde8;
  --text: #2d2a28;
  --muted: #8e8a87;
  --muted-strong: #686461;
  --accent: #f28877;
  --brand: #7aa0ff;
  --brand-strong: #4b76eb;
  --brand-soft: #eef3ff;
  --footer: #313238;
  --footer-muted: #b8bcc6;
  --shadow-soft: 0 22px 70px rgba(38, 52, 90, 0.08);
  --shadow-card: 0 14px 48px rgba(43, 53, 84, 0.08);
  --radius-xl: 36px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content: 1320px;
  --nav-h: 104px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Manrope, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  text-rendering: optimizeLegibility;
}

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

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

button {
  font: inherit;
}

.page-shell {
  position: relative;
  overflow-x: clip;
}

.container {
  width: min(calc(100% - 48px), var(--content));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 253, 251, 0.9);
  backdrop-filter: blur(16px);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: rgba(26, 29, 38, 0.08);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--nav-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.brand-copy {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-copy strong {
  color: var(--brand-strong);
}

.brand-copy span {
  color: #1f2430;
}

.nav-links {
  display: inline-flex;
  align-items: center;
  gap: 34px;
  flex-wrap: wrap;
}

.nav-link {
  position: relative;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 700;
  color: #44423f;
  letter-spacing: 0.04em;
}

.nav-link.current {
  color: var(--brand);
}

.nav-link.current::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -10px;
  margin: auto;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.locale-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.locale-pill svg {
  width: 10px;
  height: 10px;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 8px 24px rgba(49, 50, 56, 0.08);
  color: var(--text);
}

.mobile-menu {
  display: none;
  padding: 0 0 24px;
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 15px;
  font-weight: 700;
}

.mobile-menu a.current {
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.hero {
  padding: 92px 0 60px;
}

.hero.centered {
  text-align: center;
}

.hero-copy {
  max-width: 920px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 28px;
  color: var(--accent);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero-title {
  margin: 0;
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  max-width: 640px;
  margin: 18px auto 0;
  color: #a7a29e;
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0.04em;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-outline {
  border-color: rgba(122, 160, 255, 0.4);
  color: var(--brand);
  background: rgba(255, 255, 255, 0.72);
}

.btn-primary {
  background: linear-gradient(135deg, #7aa0ff, #5f84ef);
  color: #fff;
  box-shadow: 0 14px 34px rgba(95, 132, 239, 0.28);
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--line);
  color: var(--muted-strong);
}

.section {
  padding: 122px 0;
}

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

.section-head {
  margin: 0 auto 58px;
  text-align: center;
}

.section-title {
  margin: 0;
  font-size: clamp(26px, 3.3vw, 48px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.section-copy {
  max-width: 780px;
  margin: 22px auto 0;
  color: var(--muted-strong);
  font-size: 15px;
  line-height: 1.95;
}

.split-hero,
.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 56px;
  align-items: center;
}

.stacked-copy {
  max-width: 560px;
}

.statement {
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0;
}

.lead {
  margin: 20px 0 0;
  color: var(--muted-strong);
  font-size: 16px;
  line-height: 1.95;
}

.art-panel {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 247, 255, 0.96));
  border: 1px solid rgba(216, 221, 232, 0.7);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.art-panel::before,
.art-panel::after {
  content: "";
  position: absolute;
  border-radius: 999px;
}

.art-panel::before {
  width: 240px;
  height: 240px;
  top: -80px;
  right: -60px;
  background: radial-gradient(circle, rgba(122, 160, 255, 0.26), rgba(122, 160, 255, 0));
}

.art-panel::after {
  width: 180px;
  height: 180px;
  left: -50px;
  bottom: -40px;
  background: radial-gradient(circle, rgba(242, 136, 119, 0.18), rgba(242, 136, 119, 0));
}

.art-panel img {
  width: 100%;
  height: auto;
}

.art-panel.photo img {
  height: 100%;
  min-height: 100%;
  object-fit: cover;
}

.intro-ribbon {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
}

.feature-card,
.info-card,
.teacher-card,
.timeline-card,
.value-card,
.download-card {
  position: relative;
  min-height: 100%;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid rgba(216, 221, 232, 0.85);
  box-shadow: var(--shadow-card);
}

.feature-card,
.info-card,
.timeline-card,
.value-card {
  padding: 34px;
}

.feature-card.soft {
  background: linear-gradient(180deg, #ffffff, #fafbff);
}

.feature-card h3,
.info-card h3,
.timeline-card h3,
.value-card h3,
.download-card h3 {
  margin: 0 0 16px;
  font-size: 28px;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.feature-card p,
.info-card p,
.timeline-card p,
.value-card p,
.download-card p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 15px;
  line-height: 1.9;
}

.feature-card .mini-link,
.download-card .mini-link {
  display: inline-flex;
  margin-top: 26px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  margin-bottom: 24px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(122, 160, 255, 0.15), rgba(122, 160, 255, 0.05));
}

.icon-wrap img {
  width: 34px;
  height: 34px;
}

.headline-card {
  padding: 44px;
}

.headline-card .statement {
  font-size: clamp(28px, 4vw, 50px);
}

.headline-card .lead {
  max-width: 540px;
}

.quote-card {
  padding: 48px;
  text-align: center;
}

.quote-card .statement {
  font-size: clamp(30px, 4vw, 52px);
}

.quote-card .lead {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.visual-stack {
  display: grid;
  gap: 24px;
}

.visual-stack.dual {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.visual-stack .art-panel {
  padding: 24px;
}

.visual-stack .art-panel.photo {
  padding: 0;
}

.art-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(216, 221, 232, 0.7);
}

.art-caption strong {
  font-size: 18px;
  letter-spacing: -0.01em;
}

.art-caption span {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.05em;
}

.timeline {
  display: grid;
  gap: 28px;
}

.timeline-card {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.timeline-tag {
  color: var(--accent);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.timeline-card .statement {
  font-size: clamp(24px, 3vw, 42px);
}

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.teacher-card {
  padding: 22px;
}

.teacher-card .portrait {
  margin-bottom: 18px;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(216, 221, 232, 0.75);
  background: linear-gradient(160deg, #eef3ff, #fff6f1);
}

.teacher-card .portrait img {
  width: 100%;
  aspect-ratio: 0.86;
  object-fit: cover;
}

.teacher-card h3 {
  margin: 0;
  font-size: 24px;
}

.teacher-meta {
  margin-top: 6px;
  color: var(--brand-strong);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.teacher-bio {
  margin-top: 16px;
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.85;
}

.teacher-note {
  margin: 0 auto 34px;
  max-width: 840px;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
  line-height: 1.9;
}

.pill-list,
.value-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.pill-list span,
.value-list span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted-strong);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.cta-band {
  padding: 42px;
  text-align: center;
}

.cta-band h3 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
}

.cta-band p {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--muted-strong);
  font-size: 15px;
  line-height: 1.95;
}

.cta-band .hero-actions {
  margin-top: 30px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.download-card {
  padding: 32px;
}

.download-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.download-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(122, 160, 255, 0.16), rgba(122, 160, 255, 0.03));
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-icon img {
  width: 30px;
  height: 30px;
}

.site-footer {
  margin-top: 120px;
  background: var(--footer);
  color: #fff;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.8fr;
  gap: 48px;
  padding: 60px 0 40px;
}

.site-footer h3 {
  margin: 0 0 18px;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.site-footer p,
.site-footer a {
  color: var(--footer-muted);
  font-size: 14px;
  line-height: 2;
}

.footer-links {
  display: grid;
  gap: 6px;
}

.social-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.social-row a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.social-row svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0 30px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
  text-align: center;
}

.bg-wash {
  position: relative;
}

.bg-wash::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 12%, rgba(122, 160, 255, 0.08), transparent 24%),
    radial-gradient(circle at 88% 18%, rgba(242, 136, 119, 0.08), transparent 22%),
    radial-gradient(circle at 78% 86%, rgba(122, 160, 255, 0.05), transparent 24%);
  pointer-events: none;
}

.bg-wash > * {
  position: relative;
}

@media (max-width: 1180px) {
  .site-nav {
    min-height: 88px;
  }

  .nav-links,
  .locale-pill {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .split-hero,
  .split-section,
  .grid-three,
  .teacher-grid,
  .download-grid,
  .footer-main,
  .timeline-card {
    grid-template-columns: 1fr;
  }

  .grid-two,
  .visual-stack.dual {
    grid-template-columns: 1fr;
  }

  .timeline-card {
    gap: 18px;
  }

  .timeline-tag {
    font-size: 15px;
  }
}

@media (max-width: 760px) {
  :root {
    --nav-h: 84px;
  }

  .container {
    width: min(calc(100% - 32px), var(--content));
  }

  .hero {
    padding: 64px 0 32px;
  }

  .section {
    padding: 82px 0;
  }

  .feature-card,
  .info-card,
  .timeline-card,
  .value-card,
  .download-card,
  .teacher-card,
  .headline-card,
  .quote-card,
  .cta-band {
    padding: 26px;
  }

  .brand-copy {
    gap: 6px;
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .site-footer {
    margin-top: 82px;
  }
}