:root {
  color-scheme: light;
  --bg: #f8f7f2;
  --surface: #ffffff;
  --text: #1f2623;
  --muted: #65706d;
  --line: #d9ded9;
  --teal: #176b5d;
  --teal-dark: #0d4038;
  --blue: #315c9a;
  --amber: #b26f1e;
  --mint: #d9efe7;
  --sand: #efe7d5;
  --shadow: 0 18px 50px rgba(31, 38, 35, 0.12);
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Noto Sans CJK SC",
    system-ui,
    sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-160%);
  background: var(--teal-dark);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(248, 247, 242, 0.88);
  border-bottom: 1px solid rgba(217, 222, 217, 0.9);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(100%, var(--max));
  min-height: 68px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--teal-dark);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  border-radius: 6px;
  color: #35413e;
  padding: 8px 12px;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background: var(--mint);
  color: var(--teal-dark);
  outline: none;
}

.hero {
  background:
    linear-gradient(90deg, rgba(23, 107, 93, 0.1), transparent 45%),
    linear-gradient(180deg, #fffdf7 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  width: min(100%, var(--max));
  min-height: calc(100vh - 68px);
  margin: 0 auto;
  padding: 72px 16px 88px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: center;
  gap: 56px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.35;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  color: var(--teal-dark);
  font-size: clamp(56px, 8vw, 92px);
  line-height: 0.96;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.3;
}

.hero-role {
  margin-bottom: 20px;
  color: var(--blue);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.25;
}

.hero-text {
  max-width: 680px;
  margin-bottom: 30px;
  color: #3b4844;
  font-size: 18px;
}

.hero-copy,
.profile-panel,
.timeline-body,
.plain-block,
.education-panel,
.contact-inner > * {
  min-width: 0;
}

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

.button {
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button.primary {
  background: var(--teal);
  box-shadow: 0 10px 26px rgba(23, 107, 93, 0.22);
  color: #fff;
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--teal-dark);
}

.button.secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--teal-dark);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  background: var(--mint);
}

.profile-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.profile-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 6px;
  display: block;
  object-fit: cover;
  object-position: center top;
}

.profile-facts {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.profile-facts div {
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding-top: 10px;
}

.profile-facts span,
.muted,
.timeline-meta,
.credentials {
  color: var(--muted);
}

.profile-facts strong {
  font-size: 15px;
  text-align: right;
}

.section,
.band,
.contact-section {
  padding: 82px 0;
}

.band {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.section-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 16px;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 32px;
}

.section-heading h2 {
  color: var(--teal-dark);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.capability-card {
  min-height: 220px;
  background: #fffaf0;
  border: 1px solid #ead9bb;
  border-radius: 8px;
  padding: 22px;
}

.capability-card:nth-child(2) {
  background: #eef6ff;
  border-color: #d2dfed;
}

.capability-card:nth-child(3) {
  background: #edf7f2;
  border-color: #cfe3da;
}

.capability-card:nth-child(4) {
  background: #fff6f0;
  border-color: #eed8c8;
}

.capability-card p,
.timeline-body p,
.plain-block p,
.education-panel p,
.faq-grid p,
.contact-inner p {
  margin-bottom: 0;
}

.timeline {
  display: grid;
  gap: 24px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
  font-weight: 800;
}

.timeline-meta a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.timeline-body ul {
  margin: 18px 0 0;
  padding-left: 20px;
}

.timeline-body li + li {
  margin-top: 8px;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: start;
}

.stack {
  display: grid;
  gap: 22px;
}

.plain-block {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.block-topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}

.block-topline span {
  color: var(--muted);
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 800;
}

.education-panel {
  background: var(--sand);
  border: 1px solid #ded0b5;
  border-radius: 8px;
  padding: 24px;
}

.education-panel img {
  width: 76px;
  height: 76px;
  object-fit: contain;
  margin-bottom: 24px;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.skill-list span {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--teal-dark);
  font-weight: 800;
  padding: 8px 12px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

details {
  background: #fbfcfa;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

details p {
  color: #41504b;
  margin-top: 12px;
}

.contact-section {
  background: var(--teal-dark);
  color: #fff;
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 450px);
  gap: 40px;
  align-items: center;
}

.contact-inner .eyebrow {
  color: #e7b86b;
}

.contact-actions {
  justify-content: flex-end;
}

.contact-actions .button.secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.contact-actions .button.secondary:hover,
.contact-actions .button.secondary:focus-visible {
  background: rgba(255, 255, 255, 0.16);
}

.footer {
  width: min(100%, var(--max));
  min-height: 72px;
  margin: 0 auto;
  padding: 0 16px;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

@media (max-width: 920px) {
  .hero-inner,
  .two-column,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    padding-top: 56px;
  }

  .profile-panel,
  .education-panel {
    max-width: 520px;
  }

  .capability-grid,
  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 680px) {
  .nav {
    min-height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-links a {
    flex: 0 0 auto;
    padding: 6px 10px;
  }

  .hero-inner {
    padding-top: 42px;
    padding-bottom: 64px;
    gap: 34px;
  }

  .hero-copy,
  .profile-panel,
  .education-panel,
  .contact-inner > * {
    max-width: 100%;
  }

  .hero-copy,
  .profile-panel {
    width: calc(100% - 16px);
  }

  h1 {
    font-size: 54px;
  }

  .hero-role {
    font-size: 25px;
  }

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

  .section,
  .band,
  .contact-section {
    padding: 58px 0;
  }

  .capability-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .capability-card {
    min-height: auto;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .timeline-meta {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .block-topline {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .hero-actions,
  .contact-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .button {
    width: auto;
    max-width: 100%;
  }

  .footer {
    padding-top: 22px;
    padding-bottom: 22px;
    align-items: flex-start;
    flex-direction: column;
  }
}