/* ─────────────────────────────────────────────────────────────────────────
 * design-systems/airbnb/tokens.css — 绑定令牌（verbatim）
 * ─────────────────────────────────────────────────────────────────── */
:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-warm: #f7f7f7;

  --fg: #222222;
  --fg-2: #3f3f3f;
  --muted: #6a6a6a;
  --meta: #929292;

  --border: #dddddd;
  --border-soft: #ebebeb;

  --accent: #ff385c;
  --accent-on: #ffffff;
  --accent-hover: #e31c5f;
  --accent-active: #e00b41;

  --success: #008a05;
  --warn: #c47700;
  --danger: #c13515;

  --font-display:
    "Airbnb Cereal VF", "Airbnb Cereal App", Circular,
    -apple-system, system-ui, "Helvetica Neue", Roboto, sans-serif;
  --font-body:
    "Airbnb Cereal VF", "Airbnb Cereal App", Circular,
    -apple-system, system-ui, "Helvetica Neue", Roboto, sans-serif;
  --font-mono:
    ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Monaco,
    Consolas, monospace;

  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 20px;
  --text-xl: 22px;
  --text-2xl: 28px;
  --text-3xl: 44px;
  --text-4xl: 56px;

  --leading-body: 1.5;
  --leading-tight: 1.2;
  --tracking-display: -0.02em;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;

  --section-y-desktop: 64px;
  --section-y-tablet: 48px;
  --section-y-phone: 32px;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --elev-flat: none;
  --elev-ring: 0 0 0 1px var(--border);
  --elev-raised:
    rgba(0, 0, 0, 0.02) 0 0 0 1px,
    rgba(0, 0, 0, 0.04) 0 2px 6px 0,
    rgba(0, 0, 0, 0.1) 0 4px 8px 0;

  --focus-ring: 0 0 0 2px var(--fg);

  --motion-fast: 150ms;
  --motion-base: 200ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);

  --container-max: 1280px;
  --container-gutter-desktop: 40px;
  --container-gutter-tablet: 24px;
  --container-gutter-phone: 16px;

  /* ── 种子变量适配 ── */
  --accent-soft: color-mix(in oklch, var(--accent) 12%, transparent);
  --fg-soft: color-mix(in oklch, var(--fg) 5%, transparent);

  --fs-h1: clamp(38px, 5.2vw, 60px);
  --fs-h2: var(--text-2xl);
  --fs-h3: var(--text-lg);
  --fs-lead: 19px;
  --fs-body: var(--text-base);
  --fs-meta: 13px;

  --gap-xs: var(--space-1);
  --gap-sm: var(--space-3);
  --gap-md: var(--space-5);
  --gap-lg: var(--space-8);
  --gap-xl: 56px;
  --gap-2xl: 96px;
  --container: 1180px;
  --gutter: var(--container-gutter-desktop);

  --radius: var(--radius-sm);
  --radius-lg: var(--radius-md);

  /* ── 应用 mockup 内容色（描绘产品本身的品牌，非页面主题）── */
  --lumiq-bg: oklch(0.15 0.02 262);
  --lumiq-surface: oklch(0.20 0.02 262);
  --lumiq-line: oklch(0.27 0.02 262);
  --lumiq-fg: oklch(0.94 0.01 262);
  --lumiq-muted: oklch(0.62 0.02 262);
  --lumiq-accent: oklch(0.73 0.17 55);
  --lumiq-on-accent: oklch(0.16 0.02 55);

  --pf-bg: oklch(0.975 0.004 250);
  --pf-line: oklch(0.90 0.006 250);
  --pf-accent: oklch(0.52 0.14 258);
  --pf-muted: oklch(0.55 0.01 250);
  --pf-surface: var(--surface);
  --pf-fg: oklch(0.22 0.01 258);

  --ms-bg: oklch(0.965 0.004 260);
  --ms-accent: oklch(0.56 0.12 262);
  --ms-line: oklch(0.90 0.006 260);
}

/* ─── reset & base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--fs-body);
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; }
[id] { scroll-margin-top: 96px; }

:focus-visible { outline: none; box-shadow: var(--focus-ring); }
a:focus-visible { border-radius: 4px; }

/* ─── layout primitives ─────────────────────────────────────────── */
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(48px, 8vw, var(--gap-2xl)); }
.section + .section { border-top: 1px solid var(--border); }
.stack { display: flex; flex-direction: column; }
.stack > * + * { margin-top: var(--gap-md); }
.row { display: flex; align-items: center; gap: var(--gap-md); }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--gap-md); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-md); }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: var(--gap-xl); align-items: start; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: var(--gap-xl); align-items: start; }

/* ─── type ──────────────────────────────────────────────────────── */
.h1, h1 { font-family: var(--font-display); font-weight: 700; font-size: var(--fs-h1); line-height: 1.32; letter-spacing: 0; margin: 0; }
.h2, h2 { font-family: var(--font-display); font-weight: 700; font-size: var(--fs-h2); line-height: 1.3; letter-spacing: 0; margin: 0; }
.h3, h3 { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-h3); line-height: 1.3; letter-spacing: 0; margin: 0; }
.lead { font-size: var(--fs-lead); line-height: 1.6; color: var(--muted); max-width: 60ch; margin: 0; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--gap-md);
}
.meta { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--muted); }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ─── chrome: nav + footer ──────────────────────────────────────── */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--bg) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topnav-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 12px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.monogram {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border: 1.5px solid var(--fg);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 700; font-size: 13px; letter-spacing: 0.02em;
}
.wordmark { font-family: var(--font-display); font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: var(--gap-lg); }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--fg); }
.nav-links a:hover { color: var(--fg); border-bottom: 1px solid var(--fg); }
.nav-toggle { display: none; }

.pagefoot { padding-block: var(--gap-xl); color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); }
.pagefoot .row-between { flex-wrap: wrap; gap: var(--gap-md); }
.foot-links { display: flex; gap: var(--gap-md); }

/* ─── buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 15px; font-weight: 600;
  letter-spacing: -0.005em;
  transition: background var(--motion-base) var(--ease-standard),
              border-color var(--motion-base) var(--ease-standard),
              transform var(--motion-fast) var(--ease-standard);
}
.btn:active { transform: scale(0.96); }
.btn-primary { background: var(--accent); color: var(--accent-on); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:active { background: var(--accent-active); }
.btn-secondary { background: transparent; color: var(--fg); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--fg); background: var(--surface-warm); }
.btn-ghost { background: transparent; color: var(--fg); border-color: transparent; padding-inline: 8px; }
.btn-ghost:hover { color: var(--fg); }
.btn-arrow::after { content: '→'; transition: transform var(--motion-base) var(--ease-standard); margin-left: 2px; }
.btn-arrow:hover::after { transform: translateX(3px); }

/* ─── card / surface ────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.card-flat { background: transparent; border: 0; padding: 0; }

/* ─── feature cell ──────────────────────────────────────────────── */
.feature .feature-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  margin-bottom: var(--gap-md);
}
.feature .feature-mark svg { width: 18px; height: 18px; }
.feature h3 { margin-bottom: 6px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

/* ─── pill / badge / tag ────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 11px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase;
}
.tag {
  display: inline-flex; align-items: center;
  padding: 5px 12px;
  background: transparent;
  color: var(--fg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 13px; font-weight: 500;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); }
.availability {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
  color: var(--fg-2);
}

/* ─── form field ────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 500; color: var(--fg); }
.input, .textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--fg);
  font: inherit; font-weight: 500; font-size: 15px;
  transition: border-color var(--motion-base) var(--ease-standard);
}
.input::placeholder, .textarea::placeholder { color: var(--meta); }
.input:focus, .textarea:focus {
  outline: none;
  border-color: var(--fg);
  box-shadow: var(--focus-ring);
}
.textarea { min-height: 120px; resize: vertical; line-height: 1.6; }

/* ─── hero ──────────────────────────────────────────────────────── */
.hero { padding-block: clamp(64px, 9vw, 120px); }
.hero-split { display: grid; grid-template-columns: 1.05fr 1fr; gap: var(--gap-2xl); align-items: center; }
.hero h1 { margin-bottom: var(--gap-md); }
.hero .lead { margin-bottom: var(--gap-lg); }
.hero-cta { display: inline-flex; gap: var(--gap-sm); flex-wrap: wrap; align-items: center; }
.hero-availability { margin-bottom: var(--gap-md); }
.hero-visual { position: relative; }

/* ─── section header ────────────────────────────────────────────── */
.section-head { max-width: 60ch; margin-bottom: var(--gap-xl); }
.section-head h2 { margin-bottom: var(--gap-sm); }
.section-head .lead { margin-top: var(--gap-sm); }

/* ─── about ─────────────────────────────────────────────────────── */
.facts { list-style: none; margin: 0; padding: 0; }
.facts li {
  display: flex; justify-content: space-between; align-items: baseline; gap: var(--gap-md);
  padding: 14px 0; border-bottom: 1px solid var(--border-soft);
}
.facts li:first-child { padding-top: 0; }
.facts li:last-child { border-bottom: 0; padding-bottom: 0; }
.facts .k { color: var(--muted); font-size: 14px; }
.facts .v { font-weight: 600; font-size: 14px; text-align: right; }
.tech-cloud { display: flex; flex-wrap: wrap; gap: 10px; }

/* ─── work ──────────────────────────────────────────────────────── */
.work-featured { display: grid; grid-template-columns: 1.2fr 1fr; gap: var(--gap-xl); align-items: center; }
.work-card { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); display: flex; flex-direction: column; }
.work-media { background: var(--surface-warm); border-bottom: 1px solid var(--border); }
.work-body { padding: 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.work-kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); }
.work-body h3 { font-size: 22px; }
.work-body p { margin: 0; color: var(--muted); font-size: 15px; }
.work-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.work-link { margin-top: 8px; align-self: flex-start; }
.work-value { font-size: 14px; font-weight: 600; color: var(--fg); }
.work-value::before { content: '价值 · '; color: var(--muted); font-weight: 500; }

/* ─── video frame ───────────────────────────────────────────────── */
.video-frame {
  position: relative; aspect-ratio: 16 / 9;
  background: oklch(0.15 0.01 262);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.video-frame iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ─── service / process ─────────────────────────────────────────── */
.service-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px; display: flex; flex-direction: column; gap: 10px; }
.service-card .feature-mark { margin-bottom: 0; }
.service-card h3 { font-size: 18px; }
.service-card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.service-card ul { margin: 6px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; }
.service-card ul li { color: var(--fg-2); font-size: 14px; padding-left: 16px; position: relative; }
.service-card ul li::before { content: ''; position: absolute; left: 2px; top: 9px; width: 5px; height: 5px; border-radius: 50%; background: var(--border); }
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-lg); }
.process-step { border-top: 2px solid var(--fg); padding-top: var(--gap-md); }
.process-step .step-num { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 10px; }
.process-step h3 { font-size: 18px; margin-bottom: 6px; }
.process-step p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ─── contact ───────────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--gap-2xl); align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: var(--gap-md); }
.contact-item { display: flex; align-items: center; gap: 12px; font-size: 15px; }
.contact-item .ci-ico { width: 38px; height: 38px; border: 1px solid var(--border); border-radius: var(--radius-sm); display: grid; place-items: center; flex: none; }
.contact-item .ci-ico svg { width: 18px; height: 18px; }
.contact-item a { color: var(--fg); font-weight: 600; }
.contact-item a:hover { border-bottom: 1px solid var(--fg); }
.contact-item span { color: var(--muted); }
.form-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 30px; box-shadow: var(--elev-raised); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-md); }
.form-success { display: none; text-align: center; padding: 24px 8px; }
.form-success.show { display: block; }
.form-success .check { width: 44px; height: 44px; border-radius: 50%; background: var(--success); color: var(--accent-on); display: grid; place-items: center; margin: 0 auto 16px; }
.form-success .check svg { width: 20px; height: 20px; }

/* ─── app mockup: browser frame ─────────────────────────────────── */
.mock-browser {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--elev-raised);
  overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 11px 14px; border-bottom: 1px solid var(--border); }
.mock-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.mock-dot:nth-child(1) { background: oklch(0.72 0.15 25); }
.mock-dot:nth-child(2) { background: oklch(0.82 0.13 90); }
.mock-dot:nth-child(3) { background: oklch(0.68 0.13 150); }
.mock-url {
  margin-left: 8px; flex: 1; max-width: 260px;
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
  background: var(--surface-warm); border-radius: 6px; padding: 4px 10px;
}

/* LumiQ (dark) */
.lumiq { display: grid; grid-template-columns: 128px 1fr; min-height: 320px; background: var(--lumiq-bg); color: var(--lumiq-fg); font-family: var(--font-body); }
.lumiq-side { padding: 18px 14px; border-right: 1px solid var(--lumiq-line); display: flex; flex-direction: column; gap: 18px; }
.lumiq-logo { font-weight: 700; font-size: 15px; letter-spacing: -0.01em; display: flex; align-items: center; gap: 6px; }
.lumiq-logo::before { content: ''; width: 9px; height: 9px; border-radius: 3px; background: var(--lumiq-accent); }
.lumiq-nav { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; }
.lumiq-nav span { padding: 7px 9px; border-radius: 6px; color: var(--lumiq-muted); }
.lumiq-nav span.on { background: var(--lumiq-surface); color: var(--lumiq-fg); }
.lumiq-main { padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.lumiq-head { display: flex; align-items: center; justify-content: space-between; font-size: 14px; font-weight: 600; }
.lumiq-pill { background: var(--lumiq-accent); color: var(--lumiq-on-accent); font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.lumiq-card { background: var(--lumiq-surface); border: 1px solid var(--lumiq-line); border-radius: 10px; padding: 14px; }
.lumiq-card-title { font-size: 12px; color: var(--lumiq-muted); margin-bottom: 8px; }
.lumiq-copy { font-size: 13px; line-height: 1.65; color: var(--lumiq-fg); margin: 0; }
.lumiq-copy .hl { color: var(--lumiq-accent); }
.lumiq-actions { display: flex; align-items: center; gap: 8px; margin-top: 12px; }
.lumiq-btn { background: var(--lumiq-accent); color: var(--lumiq-on-accent); font-size: 12px; font-weight: 600; padding: 6px 12px; border-radius: 7px; }
.lumiq-chip { font-size: 11px; color: var(--lumiq-muted); border: 1px solid var(--lumiq-line); padding: 4px 9px; border-radius: 999px; }

/* ─── app mockup: desktop window ────────────────────────────────── */
.mock-window { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--elev-raised); overflow: hidden; }
.win-bar { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.win-title { font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.win-dots { display: flex; gap: 6px; }
.win-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--border); display: block; }

/* PostFlow (light desktop) */
.postflow { display: grid; grid-template-columns: 118px 1fr 116px; min-height: 300px; background: var(--pf-bg); color: var(--pf-fg); font-family: var(--font-body); }
.pf-col { padding: 14px; border-right: 1px solid var(--pf-line); display: flex; flex-direction: column; gap: 8px; }
.pf-col.last { border-right: 0; }
.pf-col h4 { font-size: 10.5px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--pf-muted); margin: 0 0 4px; }
.pf-item { font-size: 12px; padding: 7px 8px; border-radius: 7px; background: var(--pf-surface); border: 1px solid var(--pf-line); color: var(--pf-fg); }
.pf-item.on { border-color: var(--pf-accent); }
.pf-item .t { font-family: var(--font-mono); font-size: 10px; color: var(--pf-accent); }
.pf-seg { display: flex; gap: 8px; align-items: flex-start; padding: 8px 0; border-bottom: 1px solid var(--pf-line); }
.pf-seg:last-child { border-bottom: 0; }
.pf-seg .ts { font-family: var(--font-mono); font-size: 10px; color: var(--pf-accent); flex: none; padding-top: 2px; }
.pf-seg p { margin: 0; font-size: 12px; line-height: 1.55; color: var(--pf-fg); }
.pf-seg p span { color: var(--pf-muted); }

/* ─── app mockup: media search ──────────────────────────────────── */
.mediaseek { display: flex; flex-direction: column; gap: 12px; padding: 16px; background: var(--ms-bg); color: var(--pf-fg); font-family: var(--font-body); }
.ms-search { display: flex; align-items: center; gap: 8px; background: var(--pf-surface); border: 1px solid var(--ms-line); border-radius: 9px; padding: 9px 12px; }
.ms-search .ico { width: 14px; height: 14px; color: var(--ms-accent); }
.ms-search .q { font-size: 13px; color: var(--pf-fg); }
.ms-search .q b { color: var(--ms-accent); font-weight: 600; }
.ms-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.ms-tile { aspect-ratio: 16 / 10; border-radius: 8px; display: grid; place-items: center; font-family: var(--font-mono); font-size: 9px; color: color-mix(in oklch, var(--accent-on) 80%, transparent); position: relative; }
.ms-tile .dur { position: absolute; right: 6px; bottom: 6px; background: color-mix(in oklch, oklch(0.1 0 0) 55%, transparent); color: var(--accent-on); font-size: 9px; padding: 1px 5px; border-radius: 4px; }
.ms-t1 { background: linear-gradient(135deg, oklch(0.62 0.14 210), oklch(0.45 0.12 240)); }
.ms-t2 { background: linear-gradient(135deg, oklch(0.70 0.15 45), oklch(0.55 0.14 25)); }
.ms-t3 { background: linear-gradient(135deg, oklch(0.55 0.12 150), oklch(0.42 0.10 170)); }
.ms-t4 { background: linear-gradient(135deg, oklch(0.66 0.12 200), oklch(0.50 0.11 215)); }

/* ─── scroll reveal (one flourish) ─────────────────────────────── */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.55s var(--ease-standard), transform 0.55s var(--ease-standard); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ─── work groups (overseas sites + AI tools) ────────────────── */
.work-group + .work-group { margin-top: var(--gap-2xl); }
.group-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--gap-lg); margin-bottom: var(--gap-lg); flex-wrap: wrap; }
.group-head h3 { font-size: 22px; }
.group-head .lead { max-width: 50ch; }
.site-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-lg); }
.site-card { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); display: flex; flex-direction: column; }
.site-bar { display: flex; align-items: center; gap: 5px; padding: 9px 12px; border-bottom: 1px solid var(--border); }
.site-bar .d { width: 8px; height: 8px; border-radius: 50%; background: var(--border); flex: none; }
.site-bar .d:nth-child(1) { background: oklch(0.72 0.15 25); }
.site-bar .d:nth-child(2) { background: oklch(0.82 0.13 90); }
.site-bar .d:nth-child(3) { background: oklch(0.68 0.13 150); }
.site-bar .url { margin-left: 8px; font-family: var(--font-mono); font-size: 10px; color: var(--muted); }
.site-preview { aspect-ratio: 16 / 10; overflow: hidden; }
.site-meta { padding: 14px 18px; border-top: 1px solid var(--border); display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.site-meta h4 { font-family: var(--font-display); font-weight: 600; font-size: 15px; margin: 0; }
.site-meta p { margin: 0; font-size: 12px; color: var(--muted); font-family: var(--font-mono); }

.sp-nav { display: flex; align-items: center; justify-content: space-between; }

.sp-saas { background: oklch(0.985 0.004 255); padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.sp-saas .sp-nav b { font-size: 12px; font-weight: 700; color: oklch(0.24 0.02 258); }
.sp-links { display: flex; gap: 8px; }
.sp-links i { width: 24px; height: 5px; border-radius: 3px; background: oklch(0.86 0.01 258); display: block; }
.sp-saas .sp-pill { font-size: 9px; font-weight: 600; color: oklch(1 0 0); background: oklch(0.52 0.16 258); padding: 4px 9px; border-radius: 4px; }
.sp-saas .sp-title { font-size: 19px; font-weight: 700; line-height: 1.1; letter-spacing: -0.01em; color: oklch(0.22 0.02 258); }
.sp-saas .sp-title span { color: oklch(0.52 0.16 258); }
.sp-saas .sp-sub { width: 72%; height: 6px; border-radius: 3px; background: oklch(0.88 0.01 258); }
.sp-saas .sp-cta { align-self: flex-start; font-size: 9px; font-weight: 600; color: oklch(1 0 0); background: oklch(0.52 0.16 258); padding: 5px 12px; border-radius: 5px; }

.sp-brand { background: oklch(0.16 0.01 30); padding: 14px; display: flex; flex-direction: column; justify-content: center; gap: 10px; }
.sp-brand .sp-mark { font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; color: oklch(0.62 0.02 30); }
.sp-brand .sp-title { font-size: 22px; font-weight: 700; line-height: 1.05; letter-spacing: -0.01em; color: oklch(0.96 0.01 30); }
.sp-brand .sp-title em { font-style: italic; color: oklch(0.78 0.12 60); }
.sp-brand .sp-rule { width: 100%; height: 1px; background: oklch(0.32 0.02 30); }
.sp-brand .sp-foot { font-size: 8px; letter-spacing: 0.08em; color: oklch(0.55 0.02 30); }

.sp-shop { background: oklch(0.975 0.004 150); padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.sp-shop .sp-nav b { font-size: 12px; font-weight: 700; letter-spacing: 0.06em; color: oklch(0.24 0.02 155); }
.sp-shop .sp-cart { font-size: 9px; font-weight: 600; color: oklch(0.24 0.02 155); border: 1px solid oklch(0.86 0.01 155); padding: 3px 8px; border-radius: 4px; }
.sp-shop .sp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.sp-shop .sp-cell { aspect-ratio: 3 / 4; border-radius: 4px; }
.sp-shop .sp-cell:nth-child(1) { background: linear-gradient(160deg, oklch(0.84 0.06 155), oklch(0.66 0.07 165)); }
.sp-shop .sp-cell:nth-child(2) { background: linear-gradient(160deg, oklch(0.82 0.07 80), oklch(0.70 0.08 55)); }
.sp-shop .sp-cell:nth-child(3) { background: linear-gradient(160deg, oklch(0.82 0.05 210), oklch(0.66 0.06 235)); }
.sp-shop .sp-price { font-size: 9px; font-weight: 600; color: oklch(0.35 0.03 155); }

/* ─── responsive ────────────────────────────────────────────────── */
@media (max-width: 980px) {
  .hero-split, .work-featured, .contact-grid { grid-template-columns: 1fr; }
  .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .nav-links { gap: var(--gap-md); }
  .lumiq { grid-template-columns: 100px 1fr; }
  .site-grid { grid-template-columns: repeat(2, 1fr); }
  .group-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
  :root { --gutter: var(--container-gutter-phone); }
  .nav-links, .topnav .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); padding: 12px var(--gutter); gap: 4px; }
  .grid-4, .grid-2, .site-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .ms-grid { grid-template-columns: repeat(3, 1fr); }
  .postflow { grid-template-columns: 1fr; }
  .pf-col { border-right: 0; border-bottom: 1px solid var(--pf-line); }
  .lumiq { grid-template-columns: 1fr; }
  .lumiq-side { flex-direction: row; align-items: center; border-right: 0; border-bottom: 1px solid var(--lumiq-line); }
  .lumiq-nav { flex-direction: row; }
}