:root {
  --paper: #f4f2ec;
  --paper-strong: #fffdf7;
  --ink: #1f2421;
  --muted: #68746d;
  --sage: #2f7d6b;
  --sage-soft: #dfece5;
  --clay: #c85f3d;
  --clay-soft: #f0ded5;
  --blue: #405d7b;
  --blue-soft: #dbe5eb;
  --line: rgba(31, 36, 33, 0.16);
  --shadow: 0 24px 70px rgba(31, 36, 33, 0.11);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(90deg, rgba(31, 36, 33, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(31, 36, 33, 0.03) 1px, transparent 1px),
    var(--paper);
  background-size: 40px 40px, 40px 40px, auto;
  color: var(--ink);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(47, 125, 107, 0.45);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 18px auto 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.86);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(31, 36, 33, 0.07);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-left: 4px solid var(--sage);
  font-size: 1.1rem;
  font-weight: 800;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex-wrap: wrap;
}

.nav a {
  min-height: 36px;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.section-shell {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 52px;
  align-items: center;
  min-height: 780px;
  padding-top: 72px;
}

.hero-copy {
  min-width: 0;
}

.eyebrow,
.section-kicker,
.case-type {
  margin: 0 0 14px;
  color: var(--sage);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  margin-bottom: 20px;
  font-size: 5.6rem;
  line-height: 1;
  font-weight: 900;
}

h2 {
  margin-bottom: 20px;
  font-size: 2.45rem;
  line-height: 1.18;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
  line-height: 1.35;
}

.hero-lede {
  max-width: 650px;
  color: #334039;
  font-size: 1.24rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 32px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-weight: 800;
}

.button.primary {
  background: var(--ink);
  color: var(--paper-strong);
}

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

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(31, 36, 33, 0.12);
}

.hero-facts {
  display: grid;
  gap: 12px;
  margin: 0;
}

.hero-facts div {
  padding: 14px 0 14px 18px;
  border-left: 4px solid var(--clay);
  background: rgba(255, 253, 247, 0.58);
}

.hero-facts dt {
  font-weight: 800;
}

.hero-facts dd {
  margin: 2px 0 0;
  color: var(--muted);
}

.hero-visual,
.section-image {
  margin: 0;
}

.hero-visual img,
.section-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-visual figcaption {
  max-width: 720px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.94rem;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 72px;
  border-top: 1px solid var(--line);
}

.rich-copy {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.72);
}

.rich-copy p:last-child,
.section-copy p:last-child,
.section-heading p:last-child {
  margin-bottom: 0;
}

.split-section,
.visual-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 48px;
  align-items: center;
}

.visual-section {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
}

.visual-section.reverse {
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
}

.section-copy {
  min-width: 0;
}

.section-copy > p {
  color: #3d4942;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.capability-card,
.radar-grid article,
.case-card,
.principles article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.74);
  box-shadow: 0 16px 42px rgba(31, 36, 33, 0.06);
}

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

.card-number,
.principles span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 32px;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--sage-soft);
  color: var(--sage);
  font-weight: 900;
}

.capability-card:nth-child(2) .card-number,
.principles article:nth-child(2) span {
  background: var(--blue-soft);
  color: var(--blue);
}

.capability-card:nth-child(3) .card-number,
.principles article:nth-child(3) span {
  background: var(--clay-soft);
  color: var(--clay);
}

.capability-card p,
.radar-grid p,
.case-card p,
.principles p,
.case-card li {
  color: var(--muted);
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 12px 14px 12px 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 253, 247, 0.66);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sage);
}

.radar-section,
.ability-section {
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.compact {
  max-width: 840px;
}

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

.radar-grid article {
  min-height: 250px;
  padding: 24px;
}

.radar-grid article:nth-child(1) {
  border-top: 5px solid var(--sage);
}

.radar-grid article:nth-child(2) {
  border-top: 5px solid var(--clay);
}

.radar-grid article:nth-child(3) {
  border-top: 5px solid var(--blue);
}

.radar-grid article:nth-child(4) {
  border-top: 5px solid #8a7561;
}

.principles {
  display: grid;
  gap: 14px;
}

.principles article {
  padding: 22px;
}

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

.case-card {
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 26px;
}

.case-card ul {
  display: grid;
  gap: 8px;
  margin: auto 0 0;
  padding-left: 18px;
}

.ability-list {
  display: grid;
  gap: 18px;
  max-width: 900px;
}

.ability {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.74);
}

.ability span {
  min-width: 0;
  font-weight: 800;
}

.ability strong {
  color: var(--sage);
}

.ability-track {
  grid-column: 1 / -1;
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(31, 36, 33, 0.1);
}

.ability-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--sage), var(--blue), var(--clay));
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: end;
  padding: 54px;
  margin-bottom: 70px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper-strong);
}

.contact-section h2 {
  max-width: 760px;
  margin-bottom: 0;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 253, 247, 0.42);
  border-radius: 6px;
  color: var(--paper-strong);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.contact-link:hover {
  background: rgba(255, 253, 247, 0.1);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 26px 20px 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

@media (max-width: 980px) {
  .section-shell {
    width: min(100% - 32px, var(--max));
    padding: 70px 0;
  }

  .hero,
  .intro-grid,
  .split-section,
  .visual-section,
  .visual-section.reverse,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 34px;
  }

  h1 {
    font-size: 4rem;
  }

  h2 {
    font-size: 2rem;
  }

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

  .contact-section {
    padding: 34px;
  }
}

@media (max-width: 700px) {
  body {
    font-size: 15px;
  }

  .site-header {
    position: static;
    width: min(100% - 24px, var(--max));
    align-items: flex-start;
    flex-direction: column;
    margin-top: 12px;
  }

  .nav {
    justify-content: flex-start;
  }

  .nav a {
    padding-left: 8px;
    padding-right: 8px;
  }

  .section-shell {
    width: min(100% - 24px, var(--max));
    padding: 54px 0;
  }

  .hero {
    padding-top: 46px;
  }

  h1 {
    font-size: 3.1rem;
  }

  h2 {
    font-size: 1.72rem;
  }

  .hero-lede {
    font-size: 1.08rem;
  }

  .cards-grid,
  .radar-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .capability-card,
  .radar-grid article,
  .case-card {
    min-height: auto;
  }

  .rich-copy,
  .capability-card,
  .radar-grid article,
  .case-card,
  .principles article {
    padding: 20px;
  }

  .hero-visual img,
  .section-image img {
    aspect-ratio: 4 / 3;
  }

  .contact-section {
    width: min(100% - 24px, var(--max));
    padding: 26px;
  }

  .contact-link {
    width: 100%;
    justify-content: center;
  }
}