:root {
  --ink: #17212b;
  --muted: #5d6978;
  --line: #d9e0e8;
  --paper: #f6f8fb;
  --white: #ffffff;
  --navy: #0e2a47;
  --blue: #1f5d8b;
  --steel: #7f93a7;
  --accent: #b98a42;
  --shadow: 0 24px 80px rgba(14, 42, 71, 0.14);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Aptos", "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(31, 93, 139, 0.13), transparent 32rem),
    linear-gradient(135deg, #f8fafc 0%, #eef3f8 52%, #f6f8fb 100%);
  line-height: 1.72;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  backdrop-filter: blur(20px);
  background: rgba(246, 248, 251, 0.84);
  border-bottom: 1px solid rgba(217, 224, 232, 0.72);
}

.brand,
.nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand { font-weight: 800; letter-spacing: 0.04em; color: var(--navy); }
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: linear-gradient(135deg, var(--navy), var(--blue));
  border-radius: 12px;
  font-size: 13px;
}
.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  padding: 8px 4px;
}
.nav a:hover { color: var(--blue); }
.nav .language-link {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: var(--navy);
  font-weight: 900;
}

.section,
.section-grid {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}
.hero {
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  gap: 56px;
  align-items: center;
  padding: 72px 0 88px;
}
.hero-copy { position: relative; }
.hero-copy::before {
  content: "";
  position: absolute;
  left: -28px;
  top: -30px;
  width: 130px;
  height: 130px;
  border-left: 2px solid rgba(185, 138, 66, 0.7);
  border-top: 2px solid rgba(185, 138, 66, 0.7);
}
.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 800;
  font-size: 12px;
}
h1,
h2,
h3,
p { margin-top: 0; }
h1 {
  margin-bottom: 20px;
  font-family: Georgia, "Times New Roman", "Microsoft YaHei", serif;
  font-size: clamp(52px, 9vw, 112px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  color: var(--navy);
}
h2 {
  margin-bottom: 26px;
  font-family: Georgia, "Times New Roman", "Microsoft YaHei", serif;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.04em;
  color: var(--navy);
}
h3 { color: var(--navy); line-height: 1.35; }
.lead {
  max-width: 680px;
  color: #2f3e4e;
  font-size: clamp(21px, 2.6vw, 31px);
  line-height: 1.45;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.button:hover { transform: translateY(-2px); }
.primary { color: white; background: var(--navy); box-shadow: 0 14px 34px rgba(14, 42, 71, 0.22); }
.secondary { color: var(--navy); border: 1px solid var(--line); background: rgba(255, 255, 255, 0.62); }

.hero-card {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(217, 224, 232, 0.85);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.68));
  box-shadow: var(--shadow);
}
.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -18px -18px auto;
  width: 48%;
  height: 48%;
  border-right: 2px solid rgba(31, 93, 139, 0.28);
  border-bottom: 2px solid rgba(31, 93, 139, 0.28);
  border-radius: 0 0 var(--radius) 0;
  pointer-events: none;
}
.portrait-wrap {
  overflow: hidden;
  aspect-ratio: 1;
  border-radius: 24px;
  background: #1c242b;
}
.portrait-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.profile-facts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  margin-top: 24px;
}
.profile-facts span { color: var(--accent); font-size: 24px; font-weight: 900; }
.profile-facts p { margin: 0; color: var(--muted); }

.section { padding: 92px 0; }
.split,
.education-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.copy-block {
  color: var(--muted);
  font-size: 18px;
  border-left: 1px solid var(--line);
  padding-left: 36px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 24px;
}
.metric {
  min-height: 176px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 24px;
  background: var(--navy);
  color: var(--white);
  box-shadow: 0 18px 50px rgba(14, 42, 71, 0.18);
}
.metric:nth-child(even) { background: #20394f; }
.metric strong { font-size: clamp(34px, 4vw, 54px); line-height: 1; color: #d6b071; }
.metric span { color: rgba(255,255,255,0.78); }

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.card,
.timeline-card,
.edu-list article {
  border: 1px solid rgba(217, 224, 232, 0.88);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 16px 46px rgba(14, 42, 71, 0.08);
}
.card {
  min-height: 320px;
  padding: 28px;
  border-radius: 24px;
}
.card-index {
  display: inline-block;
  margin-bottom: 46px;
  color: var(--accent);
  font-weight: 900;
  letter-spacing: 0.16em;
}
.card p,
.timeline-card p,
.timeline-card li,
.education p,
.contact p { color: var(--muted); }

.timeline { display: grid; gap: 20px; }
.timeline-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 26px;
}
.time {
  color: var(--blue);
  font-weight: 900;
  letter-spacing: 0.04em;
  padding-top: 28px;
}
.timeline-card {
  padding: 30px;
  border-radius: 24px;
}
.timeline-card .role-history {
  margin: 10px 0 18px;
  color: var(--blue);
  line-height: 1.8;
}
.timeline-card ul { margin: 18px 0 0; padding-left: 20px; }
.timeline-card li + li { margin-top: 8px; }

.education {
  border-top: 1px solid rgba(217, 224, 232, 0.72);
  border-bottom: 1px solid rgba(217, 224, 232, 0.72);
}
.edu-list { display: grid; gap: 14px; }
.edu-list article { border-radius: 20px; padding: 22px 24px; }
.edu-list h3 { margin-bottom: 4px; }
.edu-list p { margin-bottom: 0; }

.contact-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 46px;
  align-items: center;
  padding: clamp(32px, 6vw, 64px);
  border-radius: 32px;
  color: white;
  background:
    linear-gradient(135deg, rgba(14, 42, 71, 0.96), rgba(31, 93, 139, 0.92)),
    repeating-linear-gradient(45deg, transparent 0 16px, rgba(255,255,255,0.04) 16px 17px);
  box-shadow: var(--shadow);
}
.contact-panel h2,
.contact-panel .section-kicker { color: white; }
.contact-panel p { color: rgba(255,255,255,0.76); }
.contact-links { display: grid; gap: 12px; }
.contact-links a {
  padding: 16px 18px;
  border-radius: 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.16);
  font-weight: 800;
  word-break: break-word;
}
.contact-links a:hover { background: rgba(255,255,255,0.16); }

.footer {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 46px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

.reveal { animation: rise 0.82s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .hero,
  .split,
  .education-grid,
  .contact-panel { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 48px; }
  .cards,
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .timeline-item { grid-template-columns: 1fr; gap: 10px; }
  .time { padding-top: 0; }
}

@media (max-width: 680px) {
  .site-header { align-items: flex-start; flex-direction: column; padding: 14px 20px; }
  .nav { width: 100%; justify-content: space-between; gap: 8px; }
  .nav a { font-size: 13px; }
  .nav .language-link { padding-left: 10px; }
  .hero-copy { min-width: 0; }
  h1 {
    max-width: 100%;
    font-size: 42px;
    line-height: 1.05;
    letter-spacing: 0;
    overflow-wrap: anywhere;
  }
  .eyebrow {
    max-width: 100%;
    font-size: 11px;
    letter-spacing: 0.1em;
    overflow-wrap: anywhere;
  }
  .lead { max-width: 100%; font-size: 19px; }
  .section,
  .section-grid { width: min(100% - 28px, 1160px); }
  .section { padding: 62px 0; }
  .hero { gap: 30px; padding-bottom: 56px; }
  .hero-copy::before { left: -10px; top: -18px; width: 72px; height: 72px; }
  .hero-card::after { right: 0; bottom: 0; }
  .cards,
  .metrics { grid-template-columns: 1fr; }
  .card { min-height: auto; }
  .copy-block { padding-left: 22px; }
  .profile-facts { grid-template-columns: 1fr; }
  .footer { flex-direction: column; }
}