:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: #ffffff;
  --line: rgba(54, 74, 104, 0.10);
  --line-strong: rgba(65, 112, 165, 0.18);
  --text: #1f2f44;
  --muted: #607287;
  --navy: #364a68;
  --blue: #4170a5;
  --green: #3bb182;
  --shadow: 0 14px 34px rgba(54, 74, 104, 0.08);
  --shadow-strong: 0 26px 60px rgba(54, 74, 104, 0.14);
  --radius-xl: 30px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 0%, rgba(65, 112, 165, 0.08), transparent 28%),
    radial-gradient(circle at 92% 10%, rgba(59, 177, 130, 0.07), transparent 22%),
    linear-gradient(180deg, #ffffff 0%, #fbfdff 52%, #f5f8fc 100%);
  line-height: 1.56;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(54, 74, 104, 0.022) 1px, transparent 1px), linear-gradient(90deg, rgba(54, 74, 104, 0.022) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at center, black 46%, transparent 100%);
  opacity: 0.65;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button, input { font: inherit; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  z-index: 20;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  text-decoration: none;
}
.skip-link:focus { left: 12px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.shell {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}
.section-gap { padding: 1.2rem 0; }
.card,
.feature-card,
.capability-card,
.course-card,
.dashboard-card,
.proof-card,
.contact-card,
.visual-stack__main,
.stat-card {
  border: 1px solid var(--line);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}
.card { border-radius: var(--radius-lg); }

.topbar {
  background: var(--navy);
  color: rgba(255,255,255,0.92);
  font-size: 0.86rem;
}
.topbar__inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  min-height: 36px;
  padding-block: 0.14rem;
}
.topbar__left,
.topbar__right {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.topbar__right { justify-content: flex-end; }
.topbar__right a,
.topbar__link {
  color: #fff;
  text-decoration: none;
  opacity: 0.92;
}
.topbar__right a:hover,
.topbar__right a:focus-visible { opacity: 1; }
.topbar__lang {
  display: inline-flex;
  align-items: center;
  padding: 0.12rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.08);
}
.topbar__lang-btn {
  border: 0;
  background: transparent;
  color: rgba(255,255,255,0.8);
  font-weight: 800;
  padding: 0.22rem 0.62rem;
  border-radius: 999px;
  cursor: pointer;
}
.topbar__lang-btn.is-active {
  background: rgba(255,255,255,0.16);
  color: #fff;
}
.topbar__link--cta {
  padding: 0.28rem 0.64rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 28px rgba(54, 74, 104, 0.07);
  border-bottom: 1px solid rgba(54, 74, 104, 0.08);
}
.site-header.is-scrolled { background: rgba(255, 255, 255, 0.98); }
.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  min-height: 92px;
}
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  min-width: 0;
}
.brand-logo {
  width: 214px;
  max-width: 100%;
  height: auto;
  flex: 0 0 auto;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.92rem;
  flex-wrap: wrap;
}
.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
  padding: 0.46rem 0.42rem;
  border-radius: 999px;
}
.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--navy);
  background: rgba(65,112,165,0.08);
}
.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid rgba(54,74,104,0.12);
  background: #fff;
  padding: 0.6rem;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-direction: column;
  cursor: pointer;
}
.menu-toggle span { width: 18px; height: 2px; background: var(--navy); border-radius: 999px; display: block; }

.eyebrow,
.section-label,
.panel-kicker {
  margin: 0;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 800;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 1.8rem;
  padding-top: 1.45rem;
  align-items: center;
}
.hero-copy h1,
.section-heading h2,
.contact-card h2,
.about-card h2 {
  margin: 0;
  color: var(--navy);
  letter-spacing: -0.04em;
  line-height: 1.06;
}
.hero-copy h1 { font-size: clamp(2.35rem, 4.6vw, 4.2rem); max-width: 14ch; }
.section-heading h2, .contact-card h2, .about-card h2 { font-size: clamp(1.72rem, 2.85vw, 2.7rem); max-width: 18ch; }
.lead {
  margin: 1rem 0 0;
  max-width: 60ch;
  font-size: 1.02rem;
  color: var(--muted);
}
.hero-actions, .contact-actions { display: flex; flex-wrap: wrap; gap: 0.72rem; margin-top: 1.3rem; }
.hero-features {
  list-style: none;
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  padding: 0;
  margin: 1.15rem 0 0;
}
.hero-features li {
  padding: 0.52rem 0.76rem;
  border-radius: 999px;
  border: 1px solid rgba(54,74,104,0.12);
  background: rgba(255,255,255,0.84);
  color: var(--navy);
  font-size: 0.9rem;
  font-weight: 800;
}
.hero-visual { display: grid; gap: 1rem; }
.hero-visual__main {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(54,74,104,0.1);
  background: linear-gradient(135deg, rgba(65,112,165,0.08), rgba(59,177,130,0.05));
  box-shadow: var(--shadow-strong);
  padding: 0.95rem;
}
.hero-visual__main::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 12%, rgba(255,255,255,0.9), transparent 20%), radial-gradient(circle at 75% 16%, rgba(65,112,165,0.12), transparent 24%), linear-gradient(180deg, rgba(255,255,255,0.14), rgba(255,255,255,0));
  pointer-events: none;
}
.hero-visual__main img {
  width: 100%;
  border-radius: 22px;
  position: relative;
  z-index: 1;
}
.hero-visual__overlay {
  position: absolute;
  left: 50%;
  bottom: 0.95rem;
  transform: translateX(-50%);
  width: min(88%, 760px);
  z-index: 2;
  border-radius: 22px;
  padding: 1rem 1.05rem;
  background: #123561;
  color: #fff;
  box-shadow: 0 22px 50px rgba(18,53,97,0.26);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
}
.hero-visual__overlay h2 { margin: 0.12rem 0 0; font-size: clamp(1.35rem, 1.9vw, 2rem); line-height: 1.08; color: #fff; max-width: 11ch; }
.overlay-pills { display: flex; flex-wrap: wrap; gap: 0.55rem; justify-content: flex-end; }
.overlay-pills span {
  padding: 0.62rem 0.84rem;
  border-radius: 14px;
  color: #fff;
  font-weight: 800;
  min-width: 84px;
  text-align: center;
  font-size: 0.92rem;
}
.overlay-pills span:nth-child(1) { background: linear-gradient(180deg, #cae66b, #b5d94f); color: #123561; }
.overlay-pills span:nth-child(2) { background: linear-gradient(180deg, #f5857f, #f1696b); }
.overlay-pills span:nth-child(3) { background: linear-gradient(180deg, #6f9aff, #5a84ef); }
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  padding: 0.95rem;
  border-radius: 22px;
  background: #123561;
  color: #fff;
}
.hero-metrics article {
  padding: 0.95rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
}
.hero-metrics span { display: block; color: rgba(255,255,255,0.72); font-size: 0.9rem; }
.hero-metrics strong { display: block; margin-top: 0.3rem; font-size: 1.6rem; }

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}
.trust-strip__item {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 0.95rem 1rem;
  background: rgba(255,255,255,0.94);
  box-shadow: var(--shadow);
}
.trust-strip__item span {
  display: block;
  font-size: 1.4rem;
  color: var(--green);
  font-weight: 900;
}
.trust-strip__item p { margin: 0.2rem 0 0; color: var(--muted); }

.section-panel {
  padding: 1.45rem;
  border-radius: calc(var(--radius-xl) + 2px);
  border: 1px solid rgba(54,74,104,0.08);
  background: rgba(255,255,255,0.76);
  box-shadow: var(--shadow);
}
.section-heading { margin-bottom: 1.05rem; }
.section-heading--split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 1.1rem;
  align-items: end;
}
.section-heading--compact { max-width: 880px; }
.section-heading p { color: var(--muted); }
.section-heading h2 { margin-top: 0.32rem; }
.platform-grid,
.card-grid,
.dashboard-grid { display: grid; gap: 0.9rem; }
.platform-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.dashboard-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card,
.dashboard-card,
.course-card,
.contact-card,
.proof-card,
.stat-card {
  border-radius: var(--radius-lg);
  padding: 1rem;
}
.feature-card h3,
.capability-card h3,
.course-card h3,
.dashboard-card h3,
.proof-card h3,
.about-card h2 { margin: 0.24rem 0 0.4rem; color: var(--navy); }
.feature-card p,
.capability-card p,
.course-card p,
.dashboard-card p,
.proof-card p,
.contact-card p,
.about-card p { margin: 0; color: var(--muted); }
.feature-card { min-height: 220px; background: linear-gradient(180deg, #fff 0%, #fbfdff 100%); }
.feature-card--navy { background: linear-gradient(180deg, rgba(54,74,104,0.08), #fff 50%); }
.feature-card--blue { background: linear-gradient(180deg, rgba(65,112,165,0.08), #fff 50%); }
.feature-card--green { background: linear-gradient(180deg, rgba(59,177,130,0.08), #fff 50%); }
.feature-card--soft { background: linear-gradient(180deg, rgba(65,112,165,0.05), #fff 50%); }
.capability-card { background: #fff; }
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(65,112,165,0.09);
  color: var(--blue);
  font-weight: 900;
}
.course-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 0.95rem;
  align-items: center;
  background: #fff;
}
.course-card__media {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(54,74,104,0.1);
  background: linear-gradient(135deg, rgba(65,112,165,0.08), rgba(59,177,130,0.05));
}
.course-card__media img { width: 100%; height: 100%; object-fit: cover; }
.about-card {
  padding: 1.1rem;
  background: #fff;
}
.section-panel--split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 1rem;
  align-items: stretch;
}
.visual-stack { display: grid; gap: 0.9rem; }
.visual-stack__main { padding: 0.95rem; border-radius: 24px; overflow: hidden; background: linear-gradient(135deg, rgba(65,112,165,0.10), rgba(59,177,130,0.06)); }
.visual-stack__main img { width: 100%; border-radius: 18px; }
.visual-stack__row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.8rem; }
.stat-card { padding: 0.95rem; }
.stat-card span { display: block; color: var(--muted); font-size: 0.9rem; }
.stat-card strong { display: block; color: var(--navy); font-size: 1.45rem; margin-top: 0.24rem; }
.checklist { margin: 1rem 0 0; padding-left: 1.1rem; color: var(--navy); }
.checklist li + li { margin-top: 0.5rem; }
.dashboard-card { background: linear-gradient(180deg, #fff 0%, #f8fbfe 100%); }
.dashboard-card__header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.dashboard-card__header span { font-weight: 800; color: var(--navy); }
.dashboard-card__header strong { color: var(--green); font-size: 1.05rem; }
.dashboard-bars { display: grid; gap: 0.55rem; margin-top: 1rem; }
.dashboard-bars span {
  display: block;
  height: 11px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(65,112,165,0.84), rgba(65,112,165,0.24));
}
.dashboard-bars--green span { background: linear-gradient(90deg, rgba(59,177,130,0.84), rgba(59,177,130,0.24)); }
.dashboard-list { margin: 0.9rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.dashboard-progress {
  margin-top: 1rem;
  height: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(54,74,104,0.08);
}
.dashboard-progress div {
  width: 92%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--green));
}
.workflow-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}
.workflow-track div {
  position: relative;
  border-radius: 18px;
  padding: 0.95rem 0.9rem 1rem;
  border: 1px solid rgba(54,74,104,0.10);
  background: #fff;
  color: var(--navy);
  font-weight: 800;
  text-align: center;
  box-shadow: var(--shadow);
}
.workflow-track div:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -0.38rem;
  top: 50%;
  width: 0.68rem;
  height: 0.68rem;
  border-top: 2px solid var(--green);
  border-right: 2px solid var(--green);
  transform: translateY(-50%) rotate(45deg);
}
.proof-card blockquote { margin: 0.6rem 0; font-size: 1rem; color: var(--navy); font-weight: 700; line-height: 1.55; }
.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  padding: 1.45rem;
  background: linear-gradient(135deg, rgba(65,112,165,0.08), rgba(59,177,130,0.06));
}
.contact-card p { max-width: 64ch; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.56rem 0.96rem;
  border-radius: 12px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 800;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
}
.button--small { min-height: 38px; padding: 0.52rem 0.88rem; font-size: 0.94rem; }
.button:hover,
.button:focus-visible,
.topbar__lang-btn:hover,
.topbar__lang-btn:focus-visible { transform: translateY(-1px); }
.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #5e87bc);
  box-shadow: 0 14px 28px rgba(65,112,165,0.18);
}
.button-secondary {
  border-color: rgba(54,74,104,0.14);
  background: rgba(255,255,255,0.92);
  color: var(--navy);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem 0 2rem;
  color: var(--muted);
}
.footer-logo { width: 170px; margin-bottom: 0.55rem; }
.footer-links, .footer-meta { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover, .footer-links a:focus-visible { color: var(--navy); }
.footer-meta { flex-direction: column; align-items: flex-end; }

[data-lang="zh"] .lead,
[data-lang="zh"] p,
[data-lang="zh"] li,
[data-lang="zh"] dd { letter-spacing: 0.01em; }

@media (max-width: 1180px) {
  .header-inner { grid-template-columns: auto 1fr auto; }
  .hero, .platform-grid, .card-grid--four, .dashboard-grid, .trust-strip, .visual-stack__row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { gap: 1.1rem; }
  .section-heading--split, .section-panel--split { grid-template-columns: 1fr; }
  .course-card { grid-template-columns: 1fr; }
  .workflow-track { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .workflow-track div:not(:last-child)::after { right: 1rem; top: auto; bottom: -0.42rem; transform: translateY(0) rotate(135deg); }
  .hero-visual__overlay { width: min(92%, 720px); }
}

@media (max-width: 760px) {
  .topbar__inner { flex-direction: column; align-items: flex-start; padding-block: 0.55rem; }
  .topbar__right { width: 100%; justify-content: flex-start; }
  .site-header { border-bottom: 1px solid rgba(54,74,104,0.08); }
  .header-inner { grid-template-columns: auto auto auto; min-height: 76px; }
  .brand-logo { width: 162px; }
  .menu-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.18rem;
    padding: 0.85rem 0 0.25rem;
    border-top: 1px solid rgba(54,74,104,0.08);
    margin-top: 0.2rem;
  }
  .site-nav.is-open { display: flex; }
  .hero, .platform-grid, .card-grid--four, .card-grid--two, .dashboard-grid, .trust-strip, .workflow-track, .visual-stack__row { grid-template-columns: 1fr; }
  .hero-copy h1 { max-width: 14ch; }
  .hero-visual__overlay {
    position: static;
    transform: none;
    width: 100%;
    margin-top: 0.9rem;
    grid-template-columns: 1fr;
  }
  .hero-metrics { grid-template-columns: 1fr; }
  .section-panel, .contact-card { padding: 1.05rem; }
  .contact-card { flex-direction: column; align-items: flex-start; }
  .footer { flex-direction: column; }
  .footer-meta { align-items: flex-start; }
}