:root {
  --bg: #f5efe2;
  --bg-strong: #efe0c4;
  --surface: rgba(255, 252, 247, 0.76);
  --surface-strong: #fffaf1;
  --ink: #1f2421;
  --ink-soft: #4f534d;
  --line: rgba(31, 36, 33, 0.12);
  --accent: #c0552b;
  --accent-strong: #963617;
  --teal: #155e63;
  --teal-soft: #d9ece8;
  --sand: #ead8bb;
  --brass: #d69b2b;
  --shadow: 0 18px 60px rgba(44, 31, 15, 0.14);
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --content-width: min(1180px, calc(100vw - 48px));
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(214, 155, 43, 0.28), transparent 28%),
    radial-gradient(circle at 88% 15%, rgba(21, 94, 99, 0.16), transparent 22%),
    linear-gradient(180deg, #f8f2e8 0%, #f3ebdb 45%, #efe5d2 100%);
  font-family: var(--sans);
  line-height: 1.6;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.page-backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 36, 33, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 36, 33, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 88%);
}

.section-shell,
.site-footer {
  width: var(--content-width);
  margin: 0 auto;
}

.site-header {
  width: min(calc(var(--content-width) + 48px), 100vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 24px 12px;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom-left-radius: 24px;
  border-bottom-right-radius: 24px;
  background: transparent;
  backdrop-filter: none;
  transition: background-color 180ms ease, backdrop-filter 180ms ease;
}

.site-header.is-surfaced {
  background: rgba(248, 242, 232, 0.72);
  backdrop-filter: blur(18px);
}

.brand-lockup {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: inline-grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent) 0%, #e88b4f 100%);
  color: #fff7ef;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: 0 16px 34px rgba(192, 85, 43, 0.28);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-text strong {
  font-family: var(--serif);
  font-size: 1.35rem;
}

.brand-text span,
.brand-caption,
.section-note,
.sample-panel figcaption {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 18px;
  border: 1px solid rgba(31, 36, 33, 0.08);
  border-radius: 999px;
  background: rgba(255, 250, 241, 0.72);
  box-shadow: var(--shadow);
}

.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.inline-link:hover,
.inline-link:focus-visible,
.doc-card:hover,
.doc-card:focus-visible {
  color: var(--accent-strong);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(255, 250, 241, 0.78);
  border-radius: 999px;
  padding: 10px 16px;
}

.section-shell {
  margin-top: 34px;
}

.hero {
  margin-top: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 28px;
  align-items: stretch;
  padding-top: 0;
}

.hero-copy,
.hero-panel,
.sample-frame,
.workflow-step,
.doc-card,
.status-card {
  border: 1px solid rgba(31, 36, 33, 0.08);
  background: var(--surface);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 34px;
  border-radius: var(--radius-lg);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  letter-spacing: -0.03em;
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  max-width: 18ch;
}

h3 {
  font-size: 1.35rem;
}

.hero-lead,
.panel-card p,
.feature-card p,
.workflow-step p,
.status-card p,
.status-card li,
.doc-card span {
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent) 0%, #e7854c 100%);
  color: #fff9f2;
}

.button.secondary {
  border: 1px solid rgba(31, 36, 33, 0.1);
  background: rgba(255, 250, 241, 0.86);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 30px 0 0;
}

.hero-metrics li {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 250, 241, 0.84);
  border: 1px solid rgba(31, 36, 33, 0.07);
}

.hero-metrics strong {
  display: block;
  font-size: 1.7rem;
  font-family: var(--serif);
}

.panel-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 18px 20px;
  background: linear-gradient(135deg, rgba(21, 94, 99, 0.94), rgba(13, 62, 66, 0.92));
}

.panel-strip span {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #eef7f5;
  font-size: 0.86rem;
  font-family: var(--mono);
}

.panel-card {
  padding: 28px;
}

.panel-list {
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
}

.panel-list div {
  padding-top: 16px;
  border-top: 1px solid rgba(31, 36, 33, 0.1);
}

.panel-list dt {
  font-weight: 700;
}

.panel-list dd {
  margin: 6px 0 0;
  color: var(--ink-soft);
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.split-heading {
  flex-direction: row;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
}

.feature-grid,
.workflow-grid,
.docs-grid,
.status-grid {
  display: grid;
  gap: 18px;
}

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

.feature-card {
  padding: 22px;
  border-radius: var(--radius-md);
  min-height: 220px;
}

.tone-ink {
  background: linear-gradient(180deg, rgba(31, 36, 33, 0.95), rgba(48, 54, 50, 0.92));
  color: #f7f2e8;
}

.tone-ink p {
  color: rgba(247, 242, 232, 0.84);
}

.tone-sand {
  background: linear-gradient(180deg, rgba(234, 216, 187, 0.94), rgba(247, 239, 226, 0.98));
}

.tone-teal {
  background: linear-gradient(180deg, rgba(21, 94, 99, 0.95), rgba(14, 72, 75, 0.92));
  color: #eef7f4;
}

.tone-teal p {
  color: rgba(238, 247, 244, 0.84);
}

.tone-paper {
  background: linear-gradient(180deg, rgba(255, 250, 241, 0.98), rgba(248, 242, 232, 0.92));
}

.tone-brass {
  background: linear-gradient(180deg, rgba(214, 155, 43, 0.92), rgba(227, 185, 93, 0.86));
}

.tone-clay {
  background: linear-gradient(180deg, rgba(192, 85, 43, 0.94), rgba(220, 130, 79, 0.84));
  color: #fff5ec;
}

.tone-clay p,
.tone-brass p {
  color: rgba(255, 245, 236, 0.86);
}

.sample-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sample-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  background: rgba(31, 36, 33, 0.94);
}

.sample-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sample-tab,
.copy-button {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  color: #f6f0e4;
  cursor: pointer;
}

.sample-tab.is-active {
  background: rgba(214, 155, 43, 0.26);
  border-color: rgba(214, 155, 43, 0.72);
}

.sample-panels {
  padding: 0;
  background: #171b1a;
}

.sample-panel {
  margin: 0;
  padding: 18px 20px 24px;
}

pre {
  overflow: auto;
  margin: 0;
  border-radius: 18px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.04);
}

code {
  font-family: var(--mono);
  font-size: 0.93rem;
  color: #f1ecdf;
}

.inline-link {
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.sample-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 14px;
}

.workflow-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workflow-step {
  padding: 22px;
  border-radius: var(--radius-md);
}

.step-index {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(192, 85, 43, 0.12);
  color: var(--accent-strong);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.workflow-step pre {
  margin-top: 18px;
  background: rgba(31, 36, 33, 0.94);
}

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

.doc-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-radius: var(--radius-md);
  padding: 22px;
  text-decoration: none;
  min-height: 180px;
}

.doc-card strong {
  font-size: 1.16rem;
}

.status-grid {
  grid-template-columns: 1.05fr 1.2fr 0.95fr;
}

.status-card {
  border-radius: var(--radius-md);
  padding: 22px;
}

.status-card ul {
  padding-left: 20px;
  margin: 16px 0 0;
}

.highlight-card {
  background: linear-gradient(135deg, rgba(21, 94, 99, 0.96), rgba(192, 85, 43, 0.9));
  color: #fff6ec;
}

.highlight-card p {
  color: rgba(255, 246, 236, 0.88);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0 48px;
  color: var(--ink-soft);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

body[data-js-ready="true"] .site-nav[data-open="false"] {
  display: flex;
}

@media (max-width: 1080px) {
  .hero,
  .feature-grid,
  .workflow-grid,
  .docs-grid,
  .status-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    align-items: start;
  }

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

  .status-grid > :nth-child(2) {
    grid-column: span 2;
  }
}

@media (max-width: 820px) {
  .site-header {
    align-items: start;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-flex;
  }

  body[data-js-ready="true"] .site-nav {
    width: 100%;
    border-radius: 24px;
  }

  body[data-js-ready="true"] .site-nav[data-open="false"] {
    display: none;
  }

  body[data-js-ready="true"] .site-nav[data-open="true"] {
    display: flex;
    flex-wrap: wrap;
  }

  .hero,
  .feature-grid,
  .workflow-grid,
  .docs-grid,
  .status-grid,
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .split-heading,
  .site-footer,
  .sample-toolbar {
    flex-direction: column;
    align-items: start;
  }

  h1 {
    max-width: none;
  }
}

@media (max-width: 560px) {
  :root {
    --content-width: min(100vw - 48px, 100vw - 48px);
  }

  .hero-copy,
  .panel-card,
  .feature-card,
  .workflow-step,
  .doc-card,
  .status-card,
  .sample-panel {
    padding: 18px;
  }

  .sample-toolbar {
    padding: 14px 16px;
  }
}