:root {
  --bg: #f7f5ef;
  --paper: #fffdfa;
  --ink: #1f2a2e;
  --muted: #667277;
  --line: #dfd8cb;
  --accent: #0f766e;
  --accent-dark: #0a4f49;
  --gold: #a46a1f;
  --soft: #e8f2ef;
  --shadow: 0 24px 60px rgba(31, 42, 46, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(247, 245, 239, 0.92);
  border-bottom: 1px solid rgba(223, 216, 203, 0.7);
  backdrop-filter: blur(18px);
}

.brand,
.nav,
.hero-actions,
.contact-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 50%;
}

.nav {
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover,
.header-action:hover {
  color: var(--accent-dark);
}

.header-action {
  padding: 9px 14px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 700;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
}

.section-pad {
  padding: clamp(64px, 8vw, 112px) clamp(20px, 5vw, 72px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: clamp(32px, 7vw, 88px);
  align-items: center;
  min-height: calc(100vh - 67px);
}

.hero > *,
.split-section > *,
.project-hero > *,
.contact-section > * {
  min-width: 0;
}

.role,
.section-kicker,
.section-note {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 880px;
  margin-bottom: 24px;
  font-size: clamp(42px, 5.5vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  word-break: break-all;
}

.name-line {
  display: block;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.35;
}

.positioning {
  max-width: 760px;
  margin-bottom: 34px;
  color: #3d4b50;
  font-size: clamp(18px, 2vw, 22px);
}

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

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 800;
  border-radius: 999px;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

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

.button.primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 14px 30px rgba(15, 118, 110, 0.24);
}

.button.secondary {
  color: var(--accent-dark);
  background: var(--paper);
  border: 1px solid var(--line);
}

.profile-panel {
  display: grid;
  gap: 20px;
  padding: 24px;
  background: var(--paper);
  border: 1px solid rgba(223, 216, 203, 0.86);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.portrait-wrap {
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  background: var(--soft);
}

.portrait-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 16%;
}

.panel-name {
  margin-bottom: 2px;
  font-size: 20px;
  font-weight: 900;
}

.panel-meta {
  margin-bottom: 0;
  color: var(--muted);
}

.quick-info {
  display: grid;
  gap: 12px;
  margin: 0;
}

.quick-info div {
  display: grid;
  gap: 2px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.quick-info dt {
  color: var(--muted);
  font-size: 13px;
}

.quick-info dd {
  margin: 0;
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
  border-top: 1px solid var(--line);
}

.rich-text {
  color: #3d4b50;
  font-size: 18px;
}

.rich-text p:last-child,
.case-card p,
.project-copy p,
.timeline p,
.footer p {
  margin-bottom: 0;
}

.section-title-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.section-note {
  margin-bottom: 8px;
  color: var(--muted);
  text-align: right;
}

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

.capability-grid article,
.case-card,
.education-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.capability-grid article {
  min-height: 230px;
  padding: 24px;
}

.capability-grid span,
.timeline span {
  display: inline-flex;
  margin-bottom: 38px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
}

.capability-grid p,
.case-card p,
.timeline p,
.education-card p {
  color: var(--muted);
}

.project-section {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.project-heading {
  max-width: 840px;
  margin-bottom: 22px;
}

.project-heading h3 {
  margin-bottom: 8px;
  font-size: clamp(25px, 3vw, 38px);
}

.project-heading p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.second-project {
  margin-top: clamp(54px, 7vw, 88px);
}

.project-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
  margin-bottom: 32px;
  padding: clamp(24px, 4vw, 44px);
  color: #fff;
  background: #123936;
  border-radius: var(--radius);
}

.project-copy h3 {
  max-width: 720px;
  font-size: clamp(24px, 3vw, 38px);
}

.project-copy p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.78);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.metric-grid div {
  min-height: 120px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
}

.metric-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
}

.metric-grid span {
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

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

.case-card {
  overflow: hidden;
}

.case-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
  border-bottom: 1px solid var(--line);
}

.case-card div {
  padding: 20px;
}

.tool-project {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
  padding: clamp(24px, 4vw, 44px);
  background: #f6f1e7;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tool-project-copy h3 {
  font-size: clamp(24px, 3vw, 36px);
}

.tool-project-copy p {
  color: #3d4b50;
}

.project-points {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.project-points li {
  padding: 14px 16px;
  color: var(--accent-dark);
  font-weight: 800;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.tool-media-grid figure {
  overflow: hidden;
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tool-media-grid figure:first-child {
  grid-column: 1 / -1;
}

.tool-media-grid img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top center;
  border-bottom: 1px solid var(--line);
}

.tool-media-grid figcaption {
  padding: 10px 12px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.process-section {
  border-bottom: 1px solid var(--line);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline li {
  padding: 22px;
  background: var(--soft);
  border: 1px solid #cfe1dc;
  border-radius: var(--radius);
}

.timeline span {
  margin-bottom: 42px;
}

.education-card {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
}

.education-card time {
  color: var(--accent-dark);
  font-weight: 900;
  white-space: nowrap;
}

.contact-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.contact-section h2 {
  max-width: 760px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .hero,
  .split-section,
  .project-hero,
  .tool-project,
  .contact-section {
    grid-template-columns: 1fr;
  }

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

  .profile-panel {
    max-width: 460px;
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .header-action {
    display: none;
  }

  .section-pad {
    padding: 56px 18px;
  }

  .hero {
    min-height: auto;
  }

  h1 {
    font-size: 34px;
    line-height: 1.12;
  }

  .capability-grid,
  .case-layout,
  .timeline,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .section-title-row,
  .education-card,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-note {
    text-align: left;
  }

  .education-card time {
    white-space: normal;
  }
}

@media print {
  body {
    background: #fff;
  }

  .site-header,
  .hero-actions,
  .contact-actions,
  .footer {
    display: none;
  }

  .section-pad {
    padding: 24px 0;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr 220px;
  }

  .profile-panel,
  .capability-grid article,
  .case-card,
  .education-card,
  .project-hero,
  .timeline li {
    box-shadow: none;
    break-inside: avoid;
  }
}