:root {
  --ink: #101419;
  --ink-2: #1b2329;
  --muted: #64706c;
  --line: rgba(24, 34, 37, 0.12);
  --paper: #f6f1e8;
  --paper-2: #fffaf1;
  --ivory: #fff7e8;
  --emerald: #0d6b57;
  --cyan: #4fc7d7;
  --copper: #b87946;
  --white: #ffffff;
  --shadow: 0 22px 70px rgba(14, 22, 25, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

body::selection {
  color: var(--ink);
  background: rgba(79, 199, 215, 0.32);
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: minmax(210px, 1fr) auto minmax(120px, 1fr);
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  color: var(--ivory);
  transition:
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease,
    padding 180ms ease;
}

.site-header.is-scrolled {
  padding-block: 12px;
  color: var(--ink);
  background: rgba(255, 250, 241, 0.88);
  box-shadow: 0 10px 30px rgba(16, 20, 25, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 15px;
}

.brand small {
  margin-top: 2px;
  color: currentColor;
  font-size: 11px;
  opacity: 0.68;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 14px;
}

.nav a {
  opacity: 0.78;
}

.nav a:hover {
  opacity: 1;
}

.nav-cta {
  justify-self: end;
  padding: 11px 16px;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 88svh;
  overflow: hidden;
  color: var(--ivory);
  background: var(--ink);
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("./assets/hero-studio.png");
  background-position: center right;
  background-size: cover;
  transform: scale(1.02);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(11, 15, 18, 0.92), rgba(11, 15, 18, 0.76) 38%, rgba(11, 15, 18, 0.34) 70%, rgba(11, 15, 18, 0.44)),
    linear-gradient(180deg, rgba(11, 15, 18, 0.18), rgba(11, 15, 18, 0.58));
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(120px, 18vh, 190px) 0 58px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--copper);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1 {
  width: min(760px, 100%);
  margin: 0;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.98;
  font-weight: 820;
}

.hero-copy {
  width: min(660px, 100%);
  margin: 28px 0 0;
  color: rgba(255, 247, 232, 0.78);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.8;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 13px 18px;
  border-radius: 8px;
  font-weight: 750;
  line-height: 1;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

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

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

.button.ghost {
  color: var(--ivory);
  border: 1px solid rgba(255, 247, 232, 0.42);
  background: rgba(255, 255, 255, 0.06);
}

.button.inverse {
  color: var(--ivory);
  background: var(--ink);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  width: min(720px, 100%);
  margin: clamp(42px, 7vh, 78px) 0 0;
  border: 1px solid rgba(255, 247, 232, 0.22);
  border-radius: 8px;
  background: rgba(9, 13, 15, 0.34);
  backdrop-filter: blur(14px);
}

.metrics div {
  padding: 22px 24px;
}

.metrics div + div {
  border-left: 1px solid rgba(255, 247, 232, 0.16);
}

.metrics dt {
  color: var(--white);
  font-size: 34px;
  font-weight: 830;
}

.metrics dd {
  margin: 6px 0 0;
  color: rgba(255, 247, 232, 0.68);
  font-size: 14px;
}

.section-shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.intro-band {
  padding: 46px 0;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
}

.intro-grid {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: clamp(24px, 6vw, 90px);
  align-items: start;
}

.intro-grid h2,
.section-heading h2,
.contact h2 {
  margin: 0;
  font-size: clamp(32px, 4.6vw, 62px);
  line-height: 1.06;
}

.intro-grid p:not(.section-kicker) {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

.method,
.work {
  padding: clamp(78px, 11vw, 132px) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(180px, 0.38fr) minmax(0, 1fr);
  gap: clamp(24px, 6vw, 80px);
  align-items: start;
  margin-bottom: 42px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-card,
.outcome-card,
.timeline article,
.contact-panel {
  border-radius: 8px;
}

.feature-card {
  min-height: 280px;
  padding: 28px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(18, 28, 31, 0.06);
}

.feature-icon {
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  margin-bottom: 52px;
  color: var(--emerald);
  border: 1px solid rgba(13, 107, 87, 0.28);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 850;
}

.feature-card h3,
.timeline h3,
.outcome-card h3 {
  margin: 0;
  font-size: 23px;
  line-height: 1.25;
}

.feature-card p,
.timeline p,
.contact-panel p {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.tracks {
  padding: clamp(80px, 11vw, 130px) 0;
  color: var(--ivory);
  background:
    linear-gradient(90deg, rgba(79, 199, 215, 0.13), transparent 28%),
    linear-gradient(135deg, var(--ink), var(--ink-2));
}

.tracks .section-kicker {
  color: var(--cyan);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 247, 232, 0.16);
  border-radius: 8px;
  background: rgba(255, 247, 232, 0.16);
}

.timeline article {
  min-height: 286px;
  padding: 28px;
  background: rgba(255, 247, 232, 0.055);
}

.timeline span {
  display: block;
  margin-bottom: 74px;
  color: var(--cyan);
  font-weight: 850;
}

.timeline p {
  color: rgba(255, 247, 232, 0.66);
}

.outcome-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.outcome-card {
  min-height: 390px;
  padding: clamp(28px, 4vw, 46px);
}

.outcome-card.dark {
  color: var(--ivory);
  background: var(--emerald);
  box-shadow: var(--shadow);
}

.outcome-card.light {
  background: var(--paper-2);
  border: 1px solid var(--line);
}

.outcome-card p {
  margin: 0 0 18px;
  color: var(--copper);
  font-weight: 800;
}

.outcome-card.dark p {
  color: rgba(255, 247, 232, 0.72);
}

.outcome-card ul {
  display: grid;
  gap: 14px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.outcome-card li {
  position: relative;
  padding-left: 22px;
  color: rgba(16, 20, 25, 0.68);
  line-height: 1.65;
}

.outcome-card.dark li {
  color: rgba(255, 247, 232, 0.75);
}

.outcome-card li::before {
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 8px;
  height: 8px;
  content: "";
  border-radius: 50%;
  background: currentColor;
}

.contact {
  padding: clamp(78px, 11vw, 132px) 0;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(26px, 7vw, 90px);
  align-items: center;
}

.contact-panel {
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 20px 60px rgba(16, 20, 25, 0.08);
}

.contact-panel .button {
  width: 100%;
  margin-top: 24px;
}

.contact-panel small {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: rgba(255, 247, 232, 0.58);
  background: var(--ink);
  font-size: 14px;
}

@media (max-width: 920px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .nav-cta {
    display: inline-flex;
  }

  .hero-media {
    background-position: 62% center;
  }

  .intro-grid,
  .section-heading,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .timeline,
  .outcome-grid {
    grid-template-columns: 1fr;
  }

  .timeline span {
    margin-bottom: 36px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-inline: 16px;
    gap: 12px;
  }

  .brand small {
    display: none;
  }

  .nav-cta {
    padding-inline: 12px;
  }

  .hero {
    min-height: 92svh;
  }

  .hero-inner,
  .section-shell {
    width: min(100% - 32px, 1160px);
  }

  .hero h1 {
    font-size: clamp(42px, 16vw, 68px);
  }

  .button {
    width: 100%;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .metrics div + div {
    border-top: 1px solid rgba(255, 247, 232, 0.16);
    border-left: 0;
  }

  .feature-card,
  .timeline article,
  .outcome-card,
  .contact-panel {
    min-height: auto;
    padding: 24px;
  }

  .footer {
    flex-direction: column;
  }
}