@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
  --primary: #f54e00;
  --primary-active: #d04200;
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --t-thinking: #dfa88f;
  --t-grep: #9fc9a2;
  --t-read: #9fbbe0;
  --t-edit: #c0a8dd;
  --t-done: #c08532;
  --success: #1f8a65;
  --error: #cf2d56;
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;
  --sp-section: 80px;
  --maxw: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.15px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { color: var(--ink); font-weight: 400; margin: 0 0 16px; }
h1 { font-size: 72px; line-height: 1.1; letter-spacing: -2.16px; }
h2 { font-size: 36px; line-height: 1.2; letter-spacing: -0.72px; }
h3 { font-size: 26px; line-height: 1.25; letter-spacing: -0.325px; }
h4 { color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.4; margin: 0 0 8px; letter-spacing: 0; }
p { margin: 0 0 16px; }

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--canvas);
  padding: 8px 16px; border-radius: var(--r-md); z-index: 200;
}
.skip-link:focus { left: 16px; top: 16px; }

.eyebrow {
  display: inline-block; font-size: 11px; font-weight: 600; line-height: 1.4;
  letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 16px;
}

.badge-pill {
  display: inline-block; background: var(--surface-strong); color: var(--ink);
  font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase;
  border-radius: var(--r-pill); padding: 4px 10px;
}

.top-nav { background: var(--canvas); border-bottom: 1px solid var(--hairline); position: sticky; top: 0; z-index: 100; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.wordmark { font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.3px; }
.wordmark span { color: var(--primary); }
.primary-menu { display: flex; align-items: center; gap: 24px; }
.primary-menu a { font-size: 14px; font-weight: 500; color: var(--ink); letter-spacing: 0; }
.primary-menu a[aria-current="page"] { color: var(--primary); }
.nav-contact {
  background: var(--ink); color: var(--canvas) !important; border-radius: var(--r-md);
  padding: 8px 16px;
}
.nav-contact:hover { text-decoration: none; opacity: 0.92; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); display: block; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  font-family: inherit; font-size: 14px; font-weight: 500; letter-spacing: 0;
  border-radius: var(--r-md); border: 1px solid transparent; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: var(--on-primary); padding: 10px 18px; height: 40px; }
.btn-primary:hover { background: var(--primary-active); }
.btn-secondary { background: var(--surface-card); color: var(--ink); border-color: var(--hairline-strong); padding: 10px 18px; height: 40px; }
.btn-download { background: var(--ink); color: var(--canvas); padding: 12px 20px; height: 44px; }
.btn-download:hover { opacity: 0.92; }
.btn-text { color: var(--ink); height: 40px; padding: 10px 4px; }
.btn-text:hover { text-decoration: underline; }

.section { padding: var(--sp-section) 0; }
.section-soft { background: var(--canvas-soft); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }

.hero { padding: 88px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero p.lead { font-size: 18px; color: var(--body); max-width: 46ch; }
.hero-actions { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; margin-top: 24px; }
.hero-figure { border-radius: var(--r-lg); border: 1px solid var(--hairline); overflow: hidden; background: var(--surface-card); }
.hero-figure img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.figure-caption { font-size: 13px; line-height: 1.4; color: var(--muted); padding: 12px 16px; border-top: 1px solid var(--hairline); }
.figure-caption a { color: var(--muted); text-decoration: underline; }

.section-head { max-width: 60ch; margin-bottom: 40px; }
.section-head p { color: var(--body); font-size: 18px; margin: 0; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: var(--surface-card); border: 1px solid var(--hairline);
  border-radius: var(--r-lg); padding: 24px;
}
.card .eyebrow { margin-bottom: 12px; }
.card h3 { font-size: 22px; letter-spacing: -0.11px; }
.card p { margin: 0; color: var(--body); }

.article-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.article-card img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.article-card .article-body { padding: 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.article-card h3 { font-size: 22px; letter-spacing: -0.11px; margin: 0; }
.article-card .read-link { color: var(--ink); font-weight: 500; font-size: 14px; margin-top: auto; }
.article-card .read-link:hover { color: var(--primary); text-decoration: none; }

.spec-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: var(--r-lg); overflow: hidden; }
.spec-list div { background: var(--surface-card); padding: 20px 24px; }
.spec-list dt { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); }
.spec-list dd { margin: 6px 0 0; font-size: 26px; color: var(--ink); letter-spacing: -0.325px; }
.spec-list dd small { display: block; font-size: 14px; color: var(--body); letter-spacing: 0; margin-top: 4px; }

.code-block {
  background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--r-lg);
  padding: 20px; color: var(--ink); font-family: 'JetBrains Mono', monospace;
  font-size: 13px; line-height: 1.5; overflow-x: auto;
}
.code-block .cm { color: var(--muted); }

.article { max-width: 760px; margin: 0 auto; padding: 56px 0 32px; }
.article-hero { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 0; }
.article-meta { display: flex; gap: 12px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.article figure { margin: 32px 0; border: 1px solid var(--hairline); border-radius: var(--r-lg); overflow: hidden; background: var(--surface-card); }
.article figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.article figcaption { font-size: 13px; color: var(--muted); padding: 12px 16px; border-top: 1px solid var(--hairline); }
.article figcaption a { color: var(--muted); text-decoration: underline; }
.article h2 { font-size: 30px; margin: 40px 0 16px; }
.article h3 { font-size: 22px; letter-spacing: -0.11px; margin: 28px 0 12px; }
.article p, .article li { font-size: 16px; color: var(--body); letter-spacing: 0.08px; }
.article ul, .article ol { padding-left: 20px; margin: 0 0 20px; }
.article li { margin-bottom: 8px; }

.callout {
  background: var(--surface-card); border: 1px solid var(--hairline); border-left: 3px solid var(--t-done);
  border-radius: var(--r-md); padding: 20px 24px; margin: 28px 0;
}
.callout h4 { margin-bottom: 6px; }
.callout p { margin: 0; }

.data-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.data-table caption { text-align: left; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.data-table th, .data-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--hairline); }
.data-table thead th { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); }
.data-table tbody th { font-weight: 500; color: var(--ink); }

.ref-list { font-size: 14px; }
.ref-list li { margin-bottom: 10px; color: var(--body); }
.ref-list a { color: var(--ink); text-decoration: underline; word-break: break-word; }

.related { border-top: 1px solid var(--hairline); padding-top: 32px; margin-top: 8px; }
.related h2 { font-size: 22px; letter-spacing: -0.11px; }
.related-links { display: flex; gap: 16px; flex-wrap: wrap; }
.related-links a { font-size: 14px; font-weight: 500; color: var(--primary); }

.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 6px; }
.form-field input {
  width: 100%; background: var(--surface-card); color: var(--ink); font-family: inherit; font-size: 15px;
  border: 1px solid var(--hairline-strong); border-radius: var(--r-md); padding: 12px 16px; height: 44px;
}
.form-field input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.form-status { font-size: 14px; margin-top: 12px; min-height: 20px; }
.form-status.success { color: var(--success); }
.btn[disabled] { opacity: 0.6; cursor: progress; }

.contact-info .card { margin-bottom: 16px; }
.contact-info dt { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); }
.contact-info dd { margin: 4px 0 16px; color: var(--ink); }

.footer { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; }
.footer-note { font-size: 14px; color: var(--body); margin-top: 12px; max-width: 32ch; }
.footer-head { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin: 0 0 12px; }
.footer-link { display: block; font-size: 14px; color: var(--body); margin-bottom: 8px; }
.footer-base { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--hairline); display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.disclaimer { font-size: 13px; color: var(--muted); max-width: 70ch; margin: 0; }
.copyright { font-size: 13px; color: var(--muted); margin: 0; white-space: nowrap; }

.cookie-banner {
  position: fixed; left: 16px; right: 16px; bottom: 16px; max-width: 720px; margin: 0 auto;
  background: var(--surface-card); border: 1px solid var(--hairline-strong); border-radius: var(--r-lg);
  padding: 20px 24px; z-index: 150; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.cookie-banner p { margin: 0; font-size: 14px; color: var(--body); }
.cookie-banner a { text-decoration: underline; }
.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }

@media (max-width: 1024px) {
  h1 { font-size: 56px; letter-spacing: -1.2px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .primary-menu {
    position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas);
    border-bottom: 1px solid var(--hairline); flex-direction: column; align-items: flex-start;
    gap: 0; padding: 8px 24px 16px; display: none;
  }
  .primary-menu.open { display: flex; }
  .primary-menu a { padding: 10px 0; width: 100%; }
  .nav-contact { padding: 8px 16px; }
}

@media (max-width: 640px) {
  h1 { font-size: 32px; letter-spacing: -0.6px; }
  h2 { font-size: 28px; letter-spacing: -0.4px; }
  .section { padding: 56px 0; }
  .grid-3, .grid-2, .spec-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
  .cookie-actions { width: 100%; }
  .cookie-actions .btn { flex: 1; }
}