:root {
  --sprout: #4f8f64;
  --sprout-deep: #123f32;
  --leaf: #9ecf72;
  --coral: #f16f5c;
  --ink: #16221f;
  --muted: #60736d;
  --line: rgba(22, 34, 31, 0.12);
  --paper: #fbfaf5;
  --mist: #edf5ec;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(18, 63, 50, 0.18);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 20;
  width: min(1160px, calc(100% - 32px));
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 10px 12px 10px 18px;
  transform: translateX(-50%);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius);
  background: rgba(18, 63, 50, 0.35);
  backdrop-filter: blur(18px);
  transition: background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(251, 250, 245, 0.92);
  box-shadow: 0 16px 50px rgba(22, 34, 31, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 168px;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--sprout-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  background: var(--leaf);
  border-radius: 50%;
}

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

.brand small {
  margin-top: -3px;
  color: currentColor;
  font-size: 11px;
  opacity: 0.72;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
}

.nav-links a {
  opacity: 0.86;
}

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

.nav-cta,
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  cursor: pointer;
}

.nav-cta {
  color: var(--sprout-deep);
  background: var(--leaf);
}

.button.primary {
  color: var(--white);
  background: var(--sprout-deep);
  box-shadow: 0 12px 30px rgba(18, 63, 50, 0.2);
}

.button.ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.1);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.18);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(24px, 1fr) minmax(0, 1120px) minmax(24px, 1fr);
  align-items: end;
  overflow: hidden;
  color: var(--white);
}

.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(12, 39, 32, 0.86) 0%, rgba(12, 39, 32, 0.66) 38%, rgba(12, 39, 32, 0.1) 72%),
    linear-gradient(0deg, rgba(12, 39, 32, 0.72) 0%, rgba(12, 39, 32, 0) 42%);
}

.hero-content {
  position: relative;
  z-index: 1;
  grid-column: 2;
  width: min(660px, 100%);
  padding: 190px 0 92px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: clamp(64px, 9vw, 122px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin: 28px 0 30px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 18px;
}

.hero-actions,
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-proof {
  margin-top: 28px;
}

.hero-proof span {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}

.hero-panel {
  position: absolute;
  right: max(28px, calc((100vw - 1120px) / 2));
  bottom: 54px;
  z-index: 2;
  width: min(330px, calc(100% - 48px));
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: var(--radius);
  background: rgba(251, 250, 245, 0.88);
  color: var(--ink);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel p {
  margin: 0 0 14px;
  color: var(--sprout);
  font-weight: 800;
}

.hero-panel ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-panel li {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 700;
}

.hero-panel span {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--white);
  background: var(--sprout);
  border-radius: 50%;
  font-size: 12px;
}

.section,
.band,
.contact {
  padding: 104px max(24px, calc((100vw - 1120px) / 2));
}

.band {
  background: var(--mist);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 42px;
}

.section-heading h2,
.contact h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.contact-copy > p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.intro {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 52px;
  align-items: end;
}

.intro-grid,
.service-grid,
.story-grid,
.mentor-grid {
  display: grid;
  gap: 18px;
}

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

.intro-grid article,
.service-card,
.path-list article,
.story-grid article,
.mentor-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.intro-grid article {
  padding: 24px;
}

.intro-grid strong {
  display: block;
  color: var(--sprout-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  line-height: 1;
}

.intro-grid span {
  display: block;
  margin-top: 12px;
  color: var(--muted);
}

.service-grid {
  grid-template-columns: 1.25fr repeat(3, 1fr);
}

.service-card {
  min-height: 292px;
  padding: 28px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.service-card:hover,
.path-list article:hover,
.mentor-grid article:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 50px rgba(22, 34, 31, 0.1);
}

.service-card.featured {
  color: var(--white);
  background: var(--sprout-deep);
}

.service-card h3,
.path-list h3,
.timeline h3,
.mentor-grid h3 {
  margin: 22px 0 10px;
  font-size: 22px;
  line-height: 1.2;
}

.service-card p,
.path-list p,
.timeline p,
.mentor-grid p,
.faq p {
  margin: 0;
  color: var(--muted);
}

.service-card.featured p {
  color: rgba(255, 255, 255, 0.78);
}

.icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  color: var(--sprout-deep);
  background: var(--mist);
  border-radius: 50%;
}

.featured .icon {
  color: var(--sprout-deep);
  background: var(--leaf);
}

.icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

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

.timeline span,
.path-list span,
.mentor-grid span {
  color: var(--coral);
  font-weight: 800;
  font-size: 13px;
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 120px;
}

.path-list {
  display: grid;
  gap: 16px;
}

.path-list article {
  padding: 26px;
  background: var(--white);
}

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

.story-grid article {
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  background: var(--sprout-deep);
  color: var(--white);
}

.story-grid p {
  margin: 0;
  font-size: 24px;
  line-height: 1.35;
}

.story-grid span {
  color: rgba(255, 255, 255, 0.7);
}

.mentor-showcase {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 28px;
  align-items: stretch;
}

.mentor-photo {
  position: relative;
  min-height: 560px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--sprout-deep);
  box-shadow: var(--shadow);
}

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

.mentor-photo::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(0deg, rgba(18, 63, 50, 0.78) 0%, rgba(18, 63, 50, 0.02) 48%);
}

.mentor-photo figcaption {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 22px;
  z-index: 1;
  color: var(--white);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.35;
}

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

.mentor-grid article {
  position: relative;
  min-height: 174px;
  padding: 28px 30px;
  overflow: hidden;
  background: var(--white);
}

.mentor-grid article::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 112px;
  height: 100%;
  content: "";
  background: linear-gradient(90deg, rgba(158, 207, 114, 0), rgba(158, 207, 114, 0.22));
}

.mentor-grid small {
  display: block;
  margin-top: 18px;
  color: var(--sprout);
  font-weight: 800;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 840px;
}

details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

summary {
  cursor: pointer;
  padding: 20px 22px;
  font-weight: 800;
}

details p {
  padding: 0 22px 22px;
}

.contact {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 58px;
  color: var(--white);
  background: var(--sprout-deep);
}

.contact-copy p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.78);
}

.contact-meta {
  display: grid;
  gap: 10px;
  margin-top: 30px;
  color: rgba(255, 255, 255, 0.78);
}

.lead-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 700;
}

.lead-form input,
.lead-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  padding: 14px 15px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  font: inherit;
}

.lead-form textarea {
  resize: vertical;
}

.lead-form input::placeholder,
.lead-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.lead-form .button {
  width: 100%;
  border: 0;
  color: var(--sprout-deep);
  background: var(--leaf);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 26px max(24px, calc((100vw - 1120px) / 2));
  color: var(--muted);
  background: var(--paper);
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .site-header {
    top: 10px;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .site-header.is-open {
    height: auto;
    align-items: flex-start;
    flex-wrap: wrap;
    color: var(--ink);
    background: rgba(251, 250, 245, 0.96);
  }

  .site-header.is-open .nav-links {
    display: grid;
    width: 100%;
    gap: 14px;
    padding: 12px 0 4px;
  }

  .hero {
    min-height: 820px;
  }

  .hero-content {
    padding: 150px 0 250px;
  }

  .hero-panel {
    left: 24px;
    right: auto;
    bottom: 34px;
  }

  .intro,
  .split,
  .contact {
    grid-template-columns: 1fr;
  }

  .intro-grid,
  .service-grid,
  .timeline,
  .story-grid,
  .mentor-grid {
    grid-template-columns: 1fr 1fr;
  }

  .mentor-showcase {
    grid-template-columns: 1fr;
  }

  .mentor-photo {
    min-height: 460px;
  }

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

  .service-card.featured {
    grid-column: span 2;
  }

  .sticky-heading {
    position: static;
  }
}

@media (max-width: 640px) {
  .site-header {
    width: calc(100% - 20px);
    min-height: 60px;
  }

  .brand {
    min-width: auto;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 800px;
    grid-template-columns: 18px 1fr 18px;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(12, 39, 32, 0.92) 0%, rgba(12, 39, 32, 0.72) 58%, rgba(12, 39, 32, 0.28) 100%),
      linear-gradient(0deg, rgba(12, 39, 32, 0.7) 0%, rgba(12, 39, 32, 0) 48%);
  }

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

  .hero-actions .button {
    width: 100%;
  }

  .hero-panel {
    left: 18px;
    width: calc(100% - 36px);
  }

  .section,
  .band,
  .contact {
    padding: 72px 18px;
  }

  .intro-grid,
  .service-grid,
  .timeline,
  .story-grid,
  .mentor-grid {
    grid-template-columns: 1fr;
  }

  .mentor-photo {
    min-height: 380px;
  }

  .mentor-photo figcaption {
    font-size: 18px;
  }

  .service-card.featured {
    grid-column: auto;
  }

  .story-grid p {
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .service-card,
  .path-list article,
  .mentor-grid article,
  .button {
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
  }

  .button:hover {
    transform: translateY(-2px);
  }
}