:root {
  --paper: #f5f0e6;
  --paper-soft: #fbf8f2;
  --ink: #17201d;
  --muted: #65706a;
  --line: rgba(23, 32, 29, 0.14);
  --rust: #b9572b;
  --moss: #6f7f5c;
  --blue: #48687f;
  --white: #fffdf8;
  --shadow: 0 24px 80px rgba(23, 32, 29, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(20px, 4vw, 56px);
  background: rgba(245, 240, 230, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--paper-soft);
  background: var(--ink);
  border-radius: 50%;
  font-size: 18px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: clamp(34px, 5vw, 72px);
  align-items: center;
  min-height: min(860px, calc(100vh - 64px));
  padding: clamp(42px, 5vw, 72px) clamp(20px, 5vw, 72px) clamp(36px, 5vw, 56px);
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--rust);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
dl,
dd,
figure {
  margin: 0;
}

h1 {
  max-width: 840px;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(42px, 6.4vw, 84px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: pretty;
}

h2 {
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: 0;
  text-wrap: pretty;
}

h3 {
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: 0;
}

.lead {
  max-width: 700px;
  margin-top: 24px;
  color: #39433f;
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-weight: 700;
}

.primary-action {
  color: var(--paper-soft);
  background: var(--ink);
}

.secondary-action {
  color: var(--ink);
  background: transparent;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 48px;
}

.metrics div {
  padding: 18px 14px 16px;
  background: rgba(255, 253, 248, 0.62);
  border-top: 2px solid var(--rust);
}

.metrics dt {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  line-height: 1;
}

.metrics dd {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.hero-media {
  position: relative;
  min-height: 620px;
}

.portrait {
  position: absolute;
  inset: 0 auto auto 0;
  width: min(74%, 430px);
  overflow: hidden;
  background: #d7783b;
  box-shadow: var(--shadow);
}

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

.workshop-shot {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(68%, 420px);
  overflow: hidden;
  border: 10px solid var(--paper);
  box-shadow: var(--shadow);
}

.workshop-shot img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

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

.band {
  background: var(--paper-soft);
  border-block: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(22px, 4vw, 64px);
  align-items: start;
  max-width: 1180px;
  margin: 0 auto 42px;
}

.section-head.narrow {
  display: block;
  max-width: 850px;
  margin-inline: auto;
  text-align: center;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  background: var(--line);
  border: 1px solid var(--line);
}

.scenario-grid article {
  min-height: 250px;
  padding: 28px;
  background: var(--paper-soft);
}

.scenario-grid h3,
.program h3,
.method-grid h3 {
  margin-bottom: 12px;
}

.scenario-grid p,
.program p,
.profile-grid p,
.method-grid p,
.media-copy p,
.cta p {
  color: var(--muted);
}

.program-list {
  max-width: 980px;
  margin: 44px auto 0;
  border-top: 1px solid var(--line);
}

.program {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 26px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.program-index {
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
}

.meta {
  margin-bottom: 8px;
  color: var(--rust) !important;
  font-weight: 700;
}

.profile-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(30px, 5vw, 72px);
  max-width: 1180px;
  margin: 0 auto;
}

.profile-grid p + p {
  margin-top: 18px;
}

.credential-card {
  align-self: start;
  padding: 30px;
  background: var(--ink);
  color: var(--paper-soft);
}

.credential-card ul {
  margin: 20px 0 0;
  padding-left: 20px;
  color: rgba(255, 253, 248, 0.76);
}

.credential-card li + li {
  margin-top: 10px;
}

.client-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  max-width: 1180px;
  margin: 48px auto 0;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.client-strip span {
  flex-basis: 100%;
  color: var(--muted);
  font-size: 14px;
}

.client-strip strong {
  padding: 7px 10px;
  color: #26322d;
  background: rgba(111, 127, 92, 0.14);
  border: 1px solid rgba(111, 127, 92, 0.22);
  border-radius: 4px;
  font-size: 14px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 44px auto 0;
}

.method-grid article {
  padding: 26px;
  background: rgba(255, 253, 248, 0.72);
  border: 1px solid var(--line);
}

.method-grid span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 22px;
  color: var(--paper-soft);
  background: var(--blue);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
}

.media-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(480px, 1.28fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: start;
}

.media-copy {
  position: sticky;
  top: 92px;
}

.media-copy p:last-child {
  margin-top: 18px;
}

.evidence-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.evidence-grid figure {
  overflow: hidden;
  background: var(--paper-soft);
  border: 1px solid var(--line);
}

.evidence-grid figure:first-child {
  grid-row: span 2;
}

.evidence-grid img {
  width: 100%;
  height: 330px;
  object-fit: cover;
}

.evidence-grid figure:first-child img {
  height: 718px;
}

.evidence-grid figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 13px;
}

.training-section {
  color: var(--paper-soft);
  background: var(--ink);
}

.training-head {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(360px, 1.22fr);
  gap: clamp(24px, 5vw, 72px);
  max-width: 1240px;
  margin: 0 auto 42px;
}

.training-head .eyebrow {
  color: #d89b66;
}

.training-head p:last-child {
  color: rgba(255, 253, 248, 0.66);
  font-size: 17px;
}

.training-clusters {
  max-width: 1240px;
  margin-inline: auto;
}

.training-cluster {
  display: grid;
  grid-template-columns: minmax(210px, 0.28fr) minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  padding-top: 32px;
  border-top: 1px solid rgba(255, 253, 248, 0.16);
}

.training-cluster + .training-cluster {
  margin-top: 34px;
}

.cluster-copy {
  position: sticky;
  top: 92px;
  align-self: start;
}

.cluster-copy span {
  display: block;
  margin-bottom: 14px;
  color: #d89b66;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
}

.cluster-copy h3 {
  color: var(--paper-soft);
  font-size: 24px;
  line-height: 1.2;
}

.cluster-copy p {
  margin-top: 12px;
  color: rgba(255, 253, 248, 0.62);
  font-size: 15px;
}

.cluster-grid {
  display: grid;
  grid-auto-flow: dense;
  gap: 12px;
}

.scale-grid {
  grid-template-columns: 1.2fr 0.8fr;
  grid-auto-rows: 250px;
}

.workshop-grid,
.dialogue-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: 170px;
}

.compact-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: 150px;
}

.cluster-grid figure {
  position: relative;
  overflow: hidden;
  background: rgba(255, 253, 248, 0.08);
}

.scale-grid figure {
  grid-column: 2;
}

.scale-grid .feature-large {
  grid-column: 1;
  grid-row: span 2;
}

.workshop-grid figure,
.dialogue-grid figure,
.compact-grid figure {
  grid-column: span 2;
  grid-row: span 2;
}

.workshop-grid figure:first-child {
  grid-column: span 3;
  grid-row: span 2;
}

.workshop-grid figure:nth-child(2) {
  grid-column: span 3;
  grid-row: span 2;
}

.workshop-grid figure.tall {
  grid-column: span 2;
  grid-row: span 3;
}

.dialogue-grid figure:nth-child(1),
.dialogue-grid figure:nth-child(4),
.dialogue-grid figure:nth-child(6) {
  grid-column: span 3;
}

.compact-grid figure {
  grid-column: span 2;
  grid-row: span 2;
}

.cluster-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.cluster-grid figure:hover img {
  transform: scale(1.03);
}

.cluster-grid figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 30px 18px 14px;
  color: var(--paper-soft);
  background: linear-gradient(180deg, rgba(23, 32, 29, 0), rgba(23, 32, 29, 0.82));
  font-size: 14px;
  font-weight: 700;
}

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  color: var(--paper-soft);
  background: var(--ink);
}

.cta .eyebrow {
  color: #d89b66;
}

.cta h2 {
  max-width: 780px;
}

.cta p {
  max-width: 760px;
  margin-top: 18px;
  color: rgba(255, 253, 248, 0.72);
}

.contact-card {
  padding: 30px;
  color: var(--ink);
  background: var(--paper-soft);
}

.contact-card .label {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
}

.contact-card a {
  display: inline-block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
}

.contact-card p:last-child {
  color: var(--muted);
}

@media (max-width: 1040px) {
  .hero,
  .section-head,
  .profile-grid,
  .training-head,
  .media-section,
  .cta {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-media {
    min-height: 560px;
  }

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

  .media-copy {
    position: static;
  }

  .training-cluster {
    grid-template-columns: 1fr;
  }

  .cluster-copy {
    position: static;
  }

  .scale-grid,
  .workshop-grid,
  .dialogue-grid,
  .compact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: 210px;
  }

  .scale-grid figure,
  .scale-grid .feature-large,
  .workshop-grid figure,
  .workshop-grid figure:first-child,
  .workshop-grid figure:nth-child(2),
  .workshop-grid figure.tall,
  .dialogue-grid figure,
  .dialogue-grid figure:nth-child(1),
  .dialogue-grid figure:nth-child(4),
  .dialogue-grid figure:nth-child(6),
  .compact-grid figure {
    grid-column: span 1;
    grid-row: span 1;
  }
}

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

  .nav {
    display: none;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-media {
    min-height: auto;
  }

  .portrait,
  .workshop-shot {
    position: relative;
    width: 100%;
    inset: auto;
  }

  .workshop-shot {
    margin-top: 16px;
    border-width: 0;
  }

  .metrics,
  .scenario-grid,
  .method-grid,
  .evidence-grid,
  .scale-grid,
  .workshop-grid,
  .dialogue-grid,
  .compact-grid {
    grid-template-columns: 1fr;
  }

  .scenario-grid article {
    min-height: auto;
  }

  .program {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .evidence-grid figure:first-child {
    grid-row: auto;
  }

  .evidence-grid img,
  .evidence-grid figure:first-child img {
    height: auto;
  }

  .scale-grid,
  .workshop-grid,
  .dialogue-grid,
  .compact-grid {
    grid-auto-rows: auto;
  }

  .scale-grid figure,
  .scale-grid .feature-large,
  .workshop-grid figure,
  .workshop-grid figure:first-child,
  .workshop-grid figure:nth-child(2),
  .workshop-grid figure.tall,
  .dialogue-grid figure,
  .dialogue-grid figure:nth-child(1),
  .dialogue-grid figure:nth-child(4),
  .dialogue-grid figure:nth-child(6),
  .compact-grid figure {
    min-height: 0;
  }

  .cluster-grid img {
    height: auto;
    aspect-ratio: 4 / 3;
  }
}