:root {
  --ink: #1d232d;
  --muted: #68707c;
  --soft: #eef3f6;
  --line: #dfe7eb;
  --paper: #ffffff;
  --wash: #f7fafb;
  --accent: #168b70;
  --accent-soft: #e6f5f1;
  --blue: #2c6ed5;
  --shadow: 0 24px 70px rgba(28, 37, 48, 0.12);
  --radius: 8px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 78px;
  padding: 0 clamp(22px, 7vw, 112px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(223, 231, 235, 0.72);
  backdrop-filter: blur(18px);
}

.brand {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 34px);
  font-size: 14px;
  font-weight: 700;
  color: #5b636f;
  white-space: nowrap;
}

.nav a {
  padding: 9px 0;
}

.nav a:hover {
  color: var(--ink);
}

.nav a[aria-current="true"] {
  color: var(--ink);
}

.nav-contact {
  padding: 9px 17px !important;
  color: #ffffff !important;
  background: var(--ink);
  border-radius: 8px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: clamp(32px, 7vw, 100px);
  align-items: center;
  min-height: calc(100vh - 78px);
  padding: clamp(54px, 8vw, 96px) clamp(22px, 7vw, 112px) clamp(68px, 7vw, 92px);
  background:
    linear-gradient(180deg, #ffffff 0%, #fbfdfe 58%, #f5f8f9 100%);
  overflow: hidden;
}

.hero-copy {
  max-width: 760px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  margin: 0 0 22px;
  padding: 8px 12px;
  color: #596470;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(34, 42, 54, 0.05);
  font-size: 14px;
  font-weight: 700;
}

.status-pill span {
  width: 9px;
  height: 9px;
  background: #2bc48a;
  border-radius: 999px;
  box-shadow: 0 0 0 5px rgba(43, 196, 138, 0.12);
  flex: 0 0 auto;
}

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

.hero h1 {
  margin-bottom: 8px;
  font-size: clamp(56px, 9vw, 118px);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 0;
}

.role {
  margin-bottom: 18px;
  font-size: clamp(26px, 4.6vw, 58px);
  line-height: 1.05;
  font-weight: 900;
}

.role::after {
  content: "";
  display: inline-block;
  width: 5px;
  height: 0.9em;
  margin-left: 8px;
  transform: translateY(5px);
  background: var(--blue);
  border-radius: 2px;
}

.subtitle {
  max-width: 760px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 18px;
  font-weight: 600;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 8px;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

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

.button.primary {
  color: #ffffff;
  background: var(--ink);
  box-shadow: 0 16px 30px rgba(29, 35, 45, 0.16);
}

.button.secondary {
  color: var(--ink);
  background: #ffffff;
  border-color: var(--line);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(96px, 1fr));
  gap: 22px;
  max-width: 780px;
  margin: 58px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.metrics div {
  min-width: 0;
}

.metrics dt {
  font-size: clamp(28px, 3.5vw, 42px);
  line-height: 1;
  font-weight: 900;
}

.metrics dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-weight: 700;
  font-size: 14px;
}

.profile-stage {
  display: flex;
  justify-content: center;
  perspective: 1300px;
}

.profile-card {
  position: relative;
  width: min(360px, 78vw);
  min-height: 520px;
  padding: 26px;
  background: linear-gradient(155deg, #ffffff 0%, #f7fafb 100%);
  border: 1px solid #e4ecef;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transform: rotateY(-13deg) rotateX(5deg);
}

.profile-card::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 6%;
  bottom: -34px;
  height: 26px;
  background: rgba(28, 37, 48, 0.11);
  filter: blur(12px);
  transform: skewX(-18deg);
  border-radius: 50%;
  z-index: -1;
}

.card-topline {
  display: flex;
  justify-content: space-between;
  color: #67717d;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.profile-monogram {
  display: grid;
  place-items: center;
  width: 156px;
  height: 156px;
  margin: 38px auto 26px;
  color: #ffffff;
  background: var(--ink);
  border-radius: 8px;
  font-size: 48px;
  font-weight: 900;
}

.profile-text {
  padding: 20px;
  background: var(--ink);
  color: #ffffff;
  border-radius: 8px;
}

.profile-text strong {
  display: block;
  font-size: 28px;
  line-height: 1;
  margin-bottom: 10px;
}

.profile-text span {
  display: block;
  color: #c9d2dc;
  font-size: 13px;
  font-weight: 700;
}

.card-fields {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.card-fields span {
  display: block;
  min-height: 38px;
  padding: 10px 12px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: #4e5965;
  font-size: 13px;
  font-weight: 800;
}

.barcode {
  width: 150px;
  height: 36px;
  margin-top: 22px;
  background: repeating-linear-gradient(
    90deg,
    #1d232d 0 3px,
    transparent 3px 7px,
    #1d232d 7px 9px,
    transparent 9px 14px
  );
  opacity: 0.75;
}

.section {
  padding: 92px clamp(22px, 7vw, 112px);
}

.section:nth-of-type(odd) {
  background: var(--wash);
}

.section-heading {
  margin-bottom: 34px;
}

.section-heading p {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.08;
  font-weight: 900;
}

.section-heading.compact h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.skill-grid,
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.skill-card,
.timeline-card,
.project-card,
.education-list article {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 42px rgba(30, 40, 50, 0.05);
}

.skill-card {
  padding: 26px;
}

.skill-card h3,
.timeline-card h3,
.project-card h3,
.education-list h3 {
  margin-bottom: 14px;
  font-size: 22px;
  line-height: 1.28;
}

.chips,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chips span,
.tag-row span,
.award-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  border-radius: 8px;
  background: var(--soft);
  color: #45505c;
  font-size: 13px;
  font-weight: 800;
}

.timeline-card,
.project-card {
  padding: clamp(26px, 4vw, 40px);
}

.timeline-card + .timeline-card {
  margin-top: 18px;
}

.timeline-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  color: var(--muted);
  font-weight: 900;
}

.timeline-meta span {
  color: var(--ink);
  font-size: 20px;
}

.timeline-card p,
.project-card p,
.education-list p {
  color: #56616d;
  font-weight: 600;
}

.detail-list {
  display: grid;
  gap: 14px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.detail-list li {
  position: relative;
  padding-left: 24px;
  color: #2f3945;
  font-weight: 650;
}

.detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 8px;
  background: var(--ink);
  border-radius: 999px;
}

.project-grid {
  grid-template-columns: 1.45fr 0.95fr;
}

.project-kicker {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.project-card.featured {
  background:
    linear-gradient(180deg, rgba(230, 245, 241, 0.9), rgba(255, 255, 255, 1) 44%),
    #ffffff;
}

.project-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0;
}

.project-stats div {
  padding: 18px;
  background: var(--ink);
  color: #ffffff;
  border-radius: 8px;
}

.project-stats strong {
  display: block;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
}

.project-stats span {
  display: block;
  margin-top: 8px;
  color: #c6d0dc;
  font-size: 12px;
  font-weight: 800;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

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

.education-list article {
  padding: 24px;
}

.education-list span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.award-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 74px clamp(22px, 7vw, 112px);
  background: var(--ink);
  color: #ffffff;
}

.contact-section p {
  margin-bottom: 8px;
  color: #8fe2cb;
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.contact-section h2 {
  margin-bottom: 10px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.12;
}

.contact-section span {
  color: #c7d1dc;
  font-weight: 700;
}

.contact-section .button.primary {
  color: var(--ink);
  background: #ffffff;
}

.contact-section .button.secondary {
  color: #ffffff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.24);
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 72px;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-top: 16px;
    padding-bottom: 14px;
  }

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

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 52px;
  }

  .profile-stage {
    order: -1;
  }

  .profile-card {
    transform: none;
    min-height: auto;
  }

  .skill-grid,
  .project-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .contact-section {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .nav {
    gap: 14px;
    font-size: 13px;
  }

  .status-pill {
    align-items: flex-start;
    font-size: 13px;
  }

  .subtitle {
    font-size: 16px;
  }

  .metrics,
  .project-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .button {
    width: 100%;
  }

  .section {
    padding-top: 68px;
    padding-bottom: 68px;
  }
}