:root {
  --paper: #f3ede2;
  --paper-deep: #e7ddcf;
  --ink: #231b16;
  --ink-soft: #63574c;
  --ink-faint: #8f8072;
  --line: rgba(60, 42, 31, 0.14);
  --line-strong: rgba(60, 42, 31, 0.3);
  --wine: #6a2f2b;
  --wine-deep: #4e211f;
  --olive: #6c7054;
  --gold: #b18a4a;
  --surface: rgba(252, 248, 241, 0.84);
  --surface-solid: #f8f1e7;
  --shadow-soft: 0 18px 44px rgba(74, 55, 39, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Manrope", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  background:
    radial-gradient(circle at 12% 10%, rgba(177, 138, 74, 0.12), transparent 25%),
    radial-gradient(circle at 86% 18%, rgba(106, 47, 43, 0.09), transparent 22%),
    linear-gradient(180deg, #f7f2ea 0%, #efe5d7 48%, #f4ecdf 100%);
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.26;
  background-image:
    linear-gradient(rgba(72, 55, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(72, 55, 42, 0.028) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 92%);
}

body.nav-open {
  overflow: hidden;
}

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

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

main {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 6rem;
  padding: 1rem 0 5rem;
}

section {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.site-shell {
  position: relative;
  overflow: hidden;
}

.ambient {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  opacity: 0.72;
}

.ambient-one {
  top: 5rem;
  left: -5rem;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(177, 138, 74, 0.2), transparent 66%);
  filter: blur(14px);
  animation: drift 16s ease-in-out infinite;
}

.ambient-two {
  right: -7rem;
  top: 22rem;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(106, 47, 43, 0.14), transparent 68%);
  filter: blur(12px);
  animation: drift 20s ease-in-out infinite reverse;
}

.topbar {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 1.4rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-logo {
  width: 3.25rem;
  height: 3.25rem;
  padding: 0.45rem;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(255, 251, 245, 0.95), rgba(235, 224, 207, 0.92));
  border: 1px solid rgba(75, 51, 37, 0.12);
  box-shadow: 0 10px 24px rgba(87, 61, 42, 0.08);
}

.brand-copy {
  display: inline-flex;
  flex-direction: column;
  gap: 0.12rem;
}

.brand-copy strong {
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-copy span {
  color: var(--ink-faint);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 1.35rem;
  padding: 0.7rem 0 0.7rem 1.3rem;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: rgba(250, 245, 237, 0.44);
}

.site-nav a {
  position: relative;
  padding: 0.3rem 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
  transition: color 180ms ease, opacity 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 1px;
  background: var(--wine);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--wine);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(250, 245, 237, 0.88);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 1.2rem;
  height: 1.5px;
  border-radius: 999px;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(320px, 0.84fr);
  gap: 2.2rem;
  align-items: stretch;
  padding-top: 2.3rem;
  min-height: calc(100vh - 8rem);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  pointer-events: none;
}

.hero-copy,
.hero-panel,
.glass-card,
.feature-card,
.journey-card,
.deliverable-card,
.tech-card,
.cta,
.architecture-board,
.story-lead {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible,
.glass-card.is-visible,
.feature-card.is-visible,
.journey-card.is-visible,
.deliverable-card.is-visible,
.tech-card.is-visible,
.cta.is-visible,
.architecture-board.is-visible,
.story-lead.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-copy {
  padding: 2.2rem 0 1.2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.2rem;
  color: var(--wine);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 2.8rem;
  height: 1px;
  background: currentColor;
}

.hero h1,
.section-heading h2,
.cta h2 {
  margin: 0;
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 0.98;
}

.hero h1 {
  max-width: 10ch;
  font-size: clamp(3.4rem, 7vw, 6.3rem);
}

.hero h1 span {
  display: inline;
  color: var(--wine-deep);
}

.hero-text,
.story-lead p,
.feature-card p,
.journey-card li,
.deliverable-card p,
.tech-card p,
.layer-body p,
.cta p {
  color: var(--ink-soft);
  line-height: 1.86;
  font-size: 1rem;
}

.hero-text {
  max-width: 58ch;
  margin: 1.6rem 0 0;
}

.hero-note {
  margin: 1.35rem 0 0;
  color: var(--ink-faint);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.2rem;
  padding: 0.9rem 1.35rem;
  border-radius: 999px;
  font-size: 0.96rem;
  font-weight: 700;
  transition:
    transform 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease;
}

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

.button-primary {
  color: #fcf6ef;
  background: linear-gradient(135deg, var(--wine) 0%, var(--wine-deep) 100%);
  box-shadow: 0 14px 28px rgba(106, 47, 43, 0.18);
}

.button-secondary {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: rgba(248, 241, 231, 0.72);
}

.hero-panel {
  display: grid;
  gap: 1rem;
  align-self: center;
  padding: 1.2rem 0;
}

.hero-card,
.glass-card,
.feature-card,
.journey-card,
.deliverable-card,
.tech-card,
.cta,
.architecture-board,
.story-lead {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 252, 247, 0.84), rgba(246, 238, 227, 0.92)),
    var(--surface);
  box-shadow: var(--shadow-soft);
}

.hero-card::before,
.glass-card::before,
.feature-card::before,
.journey-card::before,
.deliverable-card::before,
.tech-card::before,
.cta::before,
.architecture-board::before,
.story-lead::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(82, 58, 41, 0.07);
  border-radius: calc(var(--radius-xl) - 8px);
  pointer-events: none;
}

.hero-card,
.story-lead,
.architecture-board,
.cta {
  padding: 1.7rem;
}

.glass-card,
.feature-card,
.journey-card,
.deliverable-card,
.tech-card {
  padding: 1.55rem;
}

.spotlight {
  overflow: hidden;
}

.spotlight::after {
  content: "";
  position: absolute;
  top: -3rem;
  right: -2rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(177, 138, 74, 0.18), transparent 68%);
}

.panel-tag,
.layer-label,
.journey-head span {
  display: inline-flex;
  width: fit-content;
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(97, 69, 48, 0.12);
  background: rgba(247, 240, 230, 0.74);
  color: var(--wine);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.project-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.2rem;
}

.project-matrix article {
  padding: 1rem 1rem 1.05rem;
  border-radius: var(--radius-md);
  background: rgba(251, 246, 238, 0.88);
  border: 1px solid rgba(84, 58, 40, 0.08);
}

.metric {
  display: inline-block;
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: clamp(2.5rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--wine-deep);
}

.project-matrix p,
.stack-list li,
.story-lead p,
.glass-card p {
  margin: 0;
}

.stack-list {
  display: grid;
  gap: 0.9rem;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.stack-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  line-height: 1.72;
}

.stack-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--gold);
}

.section-heading {
  max-width: 50rem;
  margin-bottom: 1.5rem;
}

.section-heading h2,
.cta h2 {
  font-size: clamp(2.5rem, 4.8vw, 4.2rem);
}

.section-grid {
  display: grid;
  gap: 1.55rem;
}

.story-lead {
  display: grid;
  gap: 1rem;
}

.story-cards,
.feature-grid,
.journey-grid,
.deliverable-grid,
.tech-points {
  display: grid;
  gap: 1rem;
}

.story-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-index {
  display: inline-block;
  color: var(--wine);
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.glass-card h3,
.feature-card h3,
.journey-card h3,
.deliverable-card h3,
.tech-card h3,
.layer-body h3 {
  margin: 0.9rem 0 0.65rem;
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: 1.85rem;
  font-weight: 600;
  line-height: 1.08;
}

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

.feature-icon {
  width: 3.35rem;
  height: 3.35rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 1.4rem;
  border: 1px solid rgba(97, 69, 48, 0.14);
  background: linear-gradient(180deg, rgba(253, 248, 240, 0.88), rgba(236, 225, 206, 0.75));
}

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

.journey-head {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.journey-card ol {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.72rem;
}

.architecture-board {
  display: grid;
  gap: 1rem;
}

.layer {
  display: grid;
  gap: 0.8rem;
}

.layer-body {
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: rgba(252, 248, 241, 0.8);
  border: 1px solid rgba(79, 57, 40, 0.1);
}

.flow-arrow {
  place-items: center;
  justify-content: center;
  min-height: 1rem;
  color: var(--gold);
  font-family: "Cormorant Garamond", serif;
  font-size: 2.3rem;
  font-weight: 700;
}

.tech-points {
  margin-top: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.deliverable-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cta {
  text-align: center;
}

.cta p {
  max-width: 58ch;
  margin: 1rem auto 0;
}

.cta .button {
  margin-top: 1.7rem;
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(1rem, -1.2rem, 0) scale(1.05);
  }
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .story-cards,
  .feature-grid,
  .tech-points,
  .deliverable-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero h1 {
    max-width: 100%;
  }
}

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: 5.2rem;
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0.75rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--line);
    border-radius: 1.2rem;
    background: rgba(248, 241, 231, 0.97);
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .journey-grid,
  .story-cards,
  .feature-grid,
  .tech-points,
  .deliverable-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  section,
  .topbar {
    width: min(calc(100% - 1.2rem), var(--max-width));
  }

  main {
    gap: 4.2rem;
  }

  .hero {
    padding-top: 1.35rem;
  }

  .hero-card,
  .glass-card,
  .feature-card,
  .journey-card,
  .deliverable-card,
  .tech-card,
  .cta,
  .story-lead,
  .architecture-board {
    border-radius: 1.35rem;
  }

  .hero-card::before,
  .glass-card::before,
  .feature-card::before,
  .journey-card::before,
  .deliverable-card::before,
  .tech-card::before,
  .cta::before,
  .architecture-board::before,
  .story-lead::before {
    inset: 8px;
    border-radius: calc(1.35rem - 8px);
  }

  .project-matrix {
    grid-template-columns: 1fr 1fr;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .hero-copy,
  .hero-panel,
  .glass-card,
  .feature-card,
  .journey-card,
  .deliverable-card,
  .tech-card,
  .cta,
  .architecture-board,
  .story-lead {
    opacity: 1;
    transform: none;
  }
}