:root {
  color-scheme: light;
  --ink: #10261f;
  --muted: #53655f;
  --paper: #f7f3ea;
  --paper-deep: #eee7da;
  --accent: #e56948;
  --mint: #b9d8c5;
  --mint-deep: #79a78c;
  --line: rgba(16, 38, 31, 0.16);
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 92% 5%, rgba(185, 216, 197, 0.7), transparent 27rem),
    radial-gradient(circle at 2% 45%, rgba(229, 105, 72, 0.1), transparent 25rem),
    var(--paper);
  font-family: "DM Sans", "Noto Sans SC", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.75;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(16, 38, 31, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 38, 31, 0.028) 1px, transparent 1px);
  background-size: 52px 52px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

.page-shell {
  width: min(1180px, calc(100% - 48px));
  min-height: 100vh;
  margin: 0 auto;
}

.site-header {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50% 50% 50% 14%;
  font-family: "Newsreader", Georgia, serif;
  font-size: 24px;
}

.brand-dot { color: var(--accent); }

.language-control {
  display: flex;
  gap: 12px;
  align-items: center;
}

.language-control label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.select-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.globe {
  position: absolute;
  left: 13px;
  z-index: 1;
  color: var(--accent);
  font-size: 19px;
  pointer-events: none;
}

select {
  min-width: 144px;
  height: 44px;
  padding: 0 34px 0 40px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--line);
  border-radius: 999px;
  font: 600 14px/1 "DM Sans", "Noto Sans SC", system-ui, sans-serif;
  cursor: pointer;
}

select:focus-visible {
  outline: 3px solid rgba(229, 105, 72, 0.3);
  outline-offset: 2px;
}

.hero {
  min-height: 680px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
  gap: clamp(40px, 8vw, 110px);
  align-items: center;
  padding: 92px 0 105px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 20px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1,
h2 { font-family: "Newsreader", Georgia, serif; }

h1 {
  max-width: 810px;
  margin: 0;
  font-size: clamp(58px, 7.5vw, 96px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.94;
}

.hero-intro {
  max-width: 760px;
  margin: 36px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.65;
}

.mentor-card {
  position: relative;
  width: min(100%, 350px);
  aspect-ratio: 0.84;
  justify-self: end;
  overflow: hidden;
  background: linear-gradient(145deg, var(--mint), #dcebdd);
  border: 1px solid rgba(16, 38, 31, 0.12);
  border-radius: 180px 180px 34px 34px;
  box-shadow: 0 30px 70px rgba(16, 38, 31, 0.12);
}

.mentor-mark {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 112px;
  height: 112px;
  display: grid;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50% 50% 50% 18%;
  font: 500 68px/1 "Newsreader", Georgia, serif;
  transform: translate(-50%, -50%) rotate(-5deg);
  box-shadow: 0 18px 30px rgba(16, 38, 31, 0.18);
}

.orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(16, 38, 31, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.orbit-one { width: 230px; height: 230px; }
.orbit-two { width: 325px; height: 325px; }

.spark {
  position: absolute;
  color: var(--accent);
  font-size: 30px;
}

.spark-one { top: 21%; right: 20%; }
.spark-two { bottom: 18%; left: 20%; }

.prompt {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  box-shadow: 0 12px 30px rgba(16, 38, 31, 0.12);
}

.prompt-one {
  top: 25%;
  left: 5%;
  width: 88px;
  height: 48px;
  gap: 6px;
  border-radius: 18px 18px 18px 5px;
}

.prompt-one span {
  width: 6px;
  height: 6px;
  background: var(--mint-deep);
  border-radius: 50%;
}

.prompt-two {
  right: 7%;
  bottom: 25%;
  width: 58px;
  height: 58px;
  color: var(--accent);
  border-radius: 50% 50% 10px 50%;
  font: 600 30px/1 "Newsreader", Georgia, serif;
}

.content-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(48px, 10vw, 150px);
  padding: 94px 0;
  border-top: 1px solid var(--line);
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(42px, 5vw, 66px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
}

.section-copy p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.75;
}

.section-copy p + p {
  margin-top: 30px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.adapt {
  position: relative;
}

.learning-path {
  margin-top: 42px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.learning-path span {
  padding: 8px 11px;
  background: rgba(185, 216, 197, 0.45);
  border-radius: 999px;
}

.learning-path i {
  flex: 1;
  min-width: 8px;
  height: 1px;
  background: var(--line);
}

.vision {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: clamp(30px, 6vw, 90px);
  align-items: start;
  margin: 20px 0 100px;
  padding: clamp(42px, 7vw, 82px);
  color: var(--paper);
  background: var(--ink);
  border-radius: 34px 34px 34px 8px;
}

.vision-symbol {
  width: 100px;
  height: 100px;
  display: grid;
  place-items: center;
  color: var(--accent);
  border: 1px solid rgba(247, 243, 234, 0.23);
  border-radius: 50%;
  font-size: 40px;
}

.vision .section-kicker { color: var(--mint); }

.vision h2 {
  margin: 0;
  font-size: clamp(30px, 4.25vw, 55px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.18;
}

footer {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
}

footer p { margin: 0; }

html[lang="zh-CN"] body { letter-spacing: 0.01em; }
html[lang="zh-CN"] h1,
html[lang="zh-CN"] h2 { letter-spacing: -0.035em; }

@media (max-width: 850px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding: 76px 0 82px;
  }

  .mentor-card {
    width: min(100%, 480px);
    max-height: 370px;
    justify-self: start;
    border-radius: 180px 180px 30px 30px;
  }

  .content-section {
    grid-template-columns: 1fr;
    gap: 38px;
    padding: 72px 0;
  }

  .vision { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .page-shell { width: min(100% - 30px, 1180px); }

  .site-header { min-height: 82px; }
  .brand { font-size: 16px; gap: 9px; }
  .brand-mark { width: 35px; height: 35px; font-size: 21px; }
  .language-control { gap: 0; }
  .language-control label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
  select { min-width: 124px; height: 40px; padding-left: 36px; font-size: 13px; }
  .globe { left: 12px; }

  h1 { font-size: clamp(48px, 15vw, 68px); }
  .hero-intro { margin-top: 28px; }
  .mentor-card { max-height: 330px; }

  .learning-path { flex-wrap: wrap; gap: 8px; }
  .learning-path i { display: none; }

  .vision {
    margin-bottom: 70px;
    padding: 35px 28px 40px;
    border-radius: 25px 25px 25px 7px;
  }

  .vision-symbol { width: 70px; height: 70px; font-size: 30px; }

  footer {
    padding: 28px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
    line-height: 1.6;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy > *, .mentor-card {
    animation: rise 700ms both;
  }
  .hero-copy > :nth-child(2) { animation-delay: 80ms; }
  .hero-copy > :nth-child(3) { animation-delay: 160ms; }
  .mentor-card { animation-delay: 180ms; }
  @keyframes rise {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }
}