/* Aurevanta Therapeutics - DESIGN.md design tokens & component styles, inlined from the shared project stylesheet (self-contained export build) */
/* =============================================================
   Aurevanta Therapeutics — style.css
   Design tokens & component styles consumed directly from
   DESIGN.md (Stripe-base clinical-blue/cyan editorial variant).
   Trilingual via data-lang on <html> + .lang-zh / .lang-en / .lang-pt spans.
   No external assets. All graphics are inline SVG.
   ============================================================= */

/* ---------- Appendix A: :root tokens (verbatim from DESIGN.md) ---------- */
:root {
  /* ===== Brand Primary — Clinical Blue / Cyan ===== */
  --color-primary-50:  #EAF2FE;
  --color-primary-100: #CFE0FC;
  --color-primary-200: #A6C6F8;
  --color-primary-300: #6E9FF0;
  --color-primary-400: #3A7AE8;
  --color-primary-500: #0F62FE;
  --color-primary-600: #0A4FD1;
  --color-primary-700: #0A3FA8;
  --color-primary-800: #082F7A;
  --color-primary-900: #061F52;
  --color-cyan-300: #7FD8E6;
  --color-cyan-500: #00B5C7;
  --color-cyan-600: #0094A8;

  /* ===== Life Accents (sparingly) ===== */
  --color-amber-500: #E8A33D;
  --color-amber-600: #C9821E;
  --color-emerald-500: #1FA97B;
  --color-emerald-600: #16855F;

  /* ===== Neutral (clinical navy-slate) ===== */
  --color-bg: #FFFFFF;
  --color-surface: #F6F9FC;
  --color-surface-2: #EEF3F8;
  --color-border: #E3E8EF;
  --color-border-strong: #C9D2DC;
  --color-text-primary: #0A1F33;
  --color-text-secondary: #4A5B6B;
  --color-text-tertiary: #7A8A99;
  --color-text-on-primary: #FFFFFF;
  --color-text-inverse: #FFFFFF;
  --color-footer-bg: #0A1F33;
  --color-footer-text: #C7D2DE;
  --color-footer-muted: #8497A8;

  /* ===== Semantic ===== */
  --color-success: #1FA97B;
  --color-success-bg: #E4F5EC;
  --color-warning: #C9821E;
  --color-warning-bg: #FBF0DD;
  --color-danger: #D64545;
  --color-danger-bg: #FBE9E9;
  --color-info: #0F62FE;
  --color-link: #0F62FE;
  --color-link-hover: #0A4FD1;

  /* ===== Gradient (restrained) ===== */
  --gradient-hero: linear-gradient(120deg, #0F62FE 0%, #00B5C7 100%);
  --gradient-hero-soft: linear-gradient(120deg, #EAF2FE 0%, #E6F7F9 100%);

  /* ===== Typography ===== */
  --font-sans: "Inter", "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --font-serif: "Source Serif 4", "Newsreader", Georgia, "Times New Roman", serif;
  --font-cjk-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-cjk-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-mono: "IBM Plex Mono", "SF Mono", "Roboto Mono", Menlo, monospace;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
  --font-heading: "Source Serif 4", "Noto Serif SC", Georgia, serif;
  --font-ui: "Inter", "Noto Sans SC", "PingFang SC", system-ui, sans-serif;

  /* Type scale — desktop */
  --fs-display: 3.5rem;
  --fs-h1: 2.5rem;
  --fs-h2: 1.75rem;
  --fs-h3: 1.375rem;
  --fs-h4: 1.125rem;
  --fs-body-lg: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-micro: 0.75rem;

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-base: 1.7;
  --lh-cjk: 1.8;
  --lh-heading: 1.25;

  --ls-tight: -0.01em;
  --ls-display: -0.02em;
  --ls-label: 0.04em;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;

  /* ===== Spacing (base 4px) ===== */
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px;
  --space-12: 48px; --space-16: 64px; --space-20: 80px;
  --space-24: 96px; --space-32: 128px;

  /* ===== Layout ===== */
  --container-max: 1200px;
  --container-pad: 24px;
  --grid-columns: 12;
  --grid-gutter: 24px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --nav-height: 72px;

  /* ===== Elevation (restrained) ===== */
  --shadow-flat: none;
  --shadow-card: 0 1px 2px rgba(10,31,51,0.04);
  --shadow-raised: 0 4px 12px rgba(10,31,51,0.06);
  --ring-focus: 0 0 0 3px rgba(15,98,254,0.35);

  /* ===== Motion ===== */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-base: 240ms;
  --dur-slow: 600ms;

  /* ===== Z-index ===== */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

@media (max-width: 639px) {
  :root {
    --fs-display: 2.25rem;
    --fs-h1: 1.875rem;
    --fs-h2: 1.5rem;
    --fs-h3: 1.25rem;
    --container-pad: 20px;
  }
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--color-link); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
a:hover { color: var(--color-link-hover); }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-heading); color: var(--color-text-primary); font-weight: var(--fw-semibold); }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }

/* CJK paragraph rhythm */
.cjk, p.cjk { line-height: var(--lh-cjk); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }

/* ---------- Trilingual switching (zh / en / pt) ---------- */
/* Default (no attr / zh): show .lang-zh only */
html[data-lang="en"] .lang-zh,
html[data-lang="pt"] .lang-zh { display: none; }
html[data-lang="zh"] .lang-en,
html[data-lang="pt"] .lang-en { display: none; }
html[data-lang="en"] .lang-pt,
html[data-lang="zh"] .lang-pt { display: none; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: var(--space-4); top: -48px;
  background: var(--color-primary-500); color: #fff;
  padding: 10px 16px; border-radius: var(--radius-sm); z-index: var(--z-modal);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-2); color: #fff; }

/* ---------- Layout container ---------- */
.container {
  width: 100%; max-width: var(--container-max);
  margin: 0 auto; padding-inline: var(--container-pad);
}
.section { padding-block: var(--space-24); }
.section--tight { padding-block: var(--space-16); }
.section--soft { background: var(--color-surface); }
.section--gradient-soft { background: var(--gradient-hero-soft); }

.eyebrow {
  font-family: var(--font-ui); font-size: var(--fs-micro); font-weight: var(--fw-medium);
  letter-spacing: var(--ls-label); text-transform: uppercase;
  color: var(--color-primary-600); margin-bottom: var(--space-3);
}

/* Section heading helper */
.section-head { max-width: 720px; margin-bottom: var(--space-12); }
.section-head h2 { font-size: var(--fs-h2); line-height: var(--lh-heading); }
.section-head p { margin-top: var(--space-4); color: var(--color-text-secondary); font-size: var(--fs-body-lg); }

/* ---------- Typography scale utilities ---------- */
.display { font-family: var(--font-heading); font-size: var(--fs-display); font-weight: var(--fw-semibold); line-height: var(--lh-tight); letter-spacing: var(--ls-display); }
h1.page-title { font-size: var(--fs-h1); line-height: var(--lh-heading); }
h2 { font-size: var(--fs-h2); line-height: var(--lh-heading); }
h3 { font-size: var(--fs-h3); }
h4 { font-family: var(--font-ui); font-size: var(--fs-h4); font-weight: var(--fw-semibold); }
.lead { font-size: var(--fs-body-lg); line-height: var(--lh-base); color: var(--color-text-secondary); }
.muted { color: var(--color-text-secondary); }
.tertiary { color: var(--color-text-tertiary); }

/* ---------- Buttons (§5.1) ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
        font-family: var(--font-ui); font-weight: var(--fw-semibold); font-size: var(--fs-body);
        border-radius: var(--radius-sm); padding: 12px 24px; border: 1px solid transparent;
        transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
        min-height: 44px; }
.btn:focus-visible { outline: none; box-shadow: var(--ring-focus); }
.btn-primary { background: var(--color-primary-500); color: var(--color-text-on-primary); }
.btn-primary:hover { background: var(--color-primary-600); color: var(--color-text-on-primary); }
.btn-secondary { background: #fff; color: var(--color-text-primary); border-color: var(--color-border-strong); }
.btn-secondary:hover { background: var(--color-surface); border-color: var(--color-primary-400); color: var(--color-text-primary); }
.btn-ghost { background: transparent; color: var(--color-primary-500); padding-inline: var(--space-4); }
.btn-ghost:hover { background: rgba(15,98,254,0.06); color: var(--color-primary-600); }
.btn[disabled], .btn.is-disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.btn-group { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- Cards (§5.2) ---------- */
.card {
  background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.card:hover { border-color: var(--color-primary-400); box-shadow: var(--shadow-raised); }
.card--surface { background: var(--color-surface); }
.card--soft { background: var(--color-surface); border-color: transparent; }

/* ---------- Figure (lab imagery) ---------- */
.figure {
  margin: 0; background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card);
}
.figure img {
  display: block; width: 100%; max-width: 100%; height: auto;
  border-radius: var(--radius-md); border: 1px solid var(--color-border);
}
.figure figcaption {
  padding: 10px var(--space-4); font-family: var(--font-ui); font-size: var(--fs-small);
  color: var(--color-text-tertiary); border-top: 1px solid var(--color-border);
  line-height: var(--lh-base);
}
.figure figcaption .lang-en { color: var(--color-text-tertiary); }

/* ---------- Badges / Tags (§5.5) ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  border-radius: var(--radius-pill); padding: 4px 10px;
  font-family: var(--font-ui); font-size: var(--fs-micro); font-weight: var(--fw-medium);
  letter-spacing: var(--ls-label); text-transform: uppercase; line-height: 1;
}
.badge--primary { background: var(--color-primary-50); color: var(--color-primary-700); }
.badge--success { background: var(--color-success-bg); color: var(--color-emerald-600); }
.badge--neutral { background: var(--color-surface-2); color: var(--color-text-secondary); }
.badge--amber   { background: var(--color-warning-bg); color: var(--color-amber-600); }
.badge--cyan    { background: #E6F7F9; color: var(--color-cyan-600); }
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

/* ---------- Form (§5.6) ---------- */
.field { margin-bottom: var(--space-5); }
.field label { display: block; font-family: var(--font-ui); font-weight: var(--fw-medium); font-size: var(--fs-small); color: var(--color-text-primary); margin-bottom: var(--space-2); }
.input, textarea, select {
  width: 100%; height: 44px; border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm); padding: 0 14px;
  font-family: var(--font-ui); font-size: var(--fs-body); color: var(--color-text-primary);
  background: #fff; transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
textarea { height: auto; min-height: 120px; padding: 12px 14px; line-height: var(--lh-base); resize: vertical; }
.input:focus-visible, textarea:focus-visible, select:focus-visible { outline: none; border-color: var(--color-primary-500); box-shadow: var(--ring-focus); }
::placeholder { color: var(--color-text-tertiary); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form-grid .field--full { grid-column: 1 / -1; }
.form-note { font-size: var(--fs-small); color: var(--color-text-tertiary); }
.form-success { display: none; margin-top: var(--space-4); padding: var(--space-4); border-radius: var(--radius-sm);
  background: var(--color-success-bg); color: var(--color-emerald-600); font-size: var(--fs-small); }
.form-success.is-visible { display: block; }

/* ---------- Navigation (§5.3) ---------- */
.nav {
  position: sticky; top: 0; height: var(--nav-height); z-index: var(--z-sticky);
  background: rgba(255,255,255,0.92); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--dur-base) var(--ease-out);
}
.nav.is-scrolled { box-shadow: 0 1px 6px rgba(10,31,51,0.06); }
.nav__inner { height: 100%; display: flex; align-items: center; gap: var(--space-6); }
.nav__logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav__logo-mark { width: 30px; height: 30px; flex-shrink: 0; }
.nav__logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.nav__logo-en { font-family: var(--font-ui); font-weight: var(--fw-semibold); font-size: 15px; color: var(--color-text-primary); letter-spacing: -0.01em; }
.nav__logo-zh { font-family: var(--font-cjk-sans); font-size: 12px; color: var(--color-text-tertiary); }
.nav__links { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }
.nav__link {
  position: relative; font-family: var(--font-ui); font-size: 15px; font-weight: var(--fw-medium);
  color: var(--color-text-secondary); padding: 8px 12px; border-radius: var(--radius-sm);
  transition: color var(--dur-fast) var(--ease-out);
}
.nav__link:hover { color: var(--color-text-primary); }
.nav__link.is-active { color: var(--color-primary-500); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px;
  background: var(--color-primary-500); border-radius: 2px;
}
.nav__lang { display: flex; align-items: center; gap: 2px; margin-left: var(--space-2); flex-shrink: 0; }
.lang-btn {
  background: none; border: none; font-family: var(--font-ui); font-size: 14px; font-weight: var(--fw-medium);
  color: var(--color-text-tertiary); padding: 6px 6px; border-radius: var(--radius-sm);
  transition: color var(--dur-fast) var(--ease-out); min-height: 44px;
}
.lang-btn:hover { color: var(--color-text-primary); }
.lang-btn.is-active { color: var(--color-primary-500); font-weight: var(--fw-semibold); text-decoration: underline; text-underline-offset: 4px; }
.nav__hamburger { display: none; margin-left: auto; background: none; border: none; padding: 10px; min-height: 44px; min-width: 44px; }
.nav__hamburger span { display: block; width: 22px; height: 2px; background: var(--color-text-primary); margin: 4px 0; transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out); }
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile drawer */
.nav__drawer {
  position: fixed; top: var(--nav-height); left: 0; right: 0;
  height: calc(100vh - var(--nav-height));   /* fallback for older engines */
  height: calc(100dvh - var(--nav-height));  /* mobile URL-bar safe */
  background: #fff; z-index: var(--z-dropdown);
  display: none; flex-direction: column; padding: var(--space-6) var(--container-pad);
  border-top: 1px solid var(--color-border); overflow-y: auto;
}
.nav__drawer.is-open { display: flex; }
.nav__drawer .nav__link { font-size: 18px; padding: 14px 4px; border-bottom: 1px solid var(--color-border); }
.nav__drawer .nav__link.is-active::after { display: none; }
.nav__drawer .nav__links { display: flex; flex-direction: column; align-items: stretch; margin-left: 0; gap: 0; }
.nav__drawer .nav__lang { margin: var(--space-5) 0 0; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: var(--color-text-on-primary);
  /* brand gradient + left-side scrim to guarantee white-text contrast (WCAG AA) over the cyan end */
  background:
    linear-gradient(90deg, rgba(10,31,51,0.30) 0%, rgba(10,31,51,0.12) 52%, rgba(10,31,51,0) 88%),
    var(--gradient-hero);
}
.hero__bg { position: absolute; inset: 0; opacity: 0.5; pointer-events: none; }
.hero__bg svg { width: 100%; height: 100%; }
.hero__inner { position: relative; padding-block: var(--space-32); }
.hero__content { max-width: 760px; }
.hero h1 { color: #fff; font-size: var(--fs-display); line-height: var(--lh-tight); letter-spacing: var(--ls-display); }
/* §3.3 — CJK titles must NOT carry negative letter-spacing (would compress 汉字) */
html[data-lang="zh"] .hero h1,
html[data-lang="zh"] .display { letter-spacing: 0; }
.hero__sub { margin-top: var(--space-6); font-size: var(--fs-body-lg); line-height: var(--lh-base); color: rgba(255,255,255,0.92); max-width: 620px; }
.hero__cta { margin-top: var(--space-8); display: flex; gap: var(--space-3); flex-wrap: wrap; }
.hero .btn-primary { background: #fff; color: var(--color-primary-600); }
.hero .btn-primary:hover { background: var(--color-primary-50); }
.hero .btn-secondary { background: rgba(10,31,51,0.22); color: #fff; border-color: rgba(255,255,255,0.7); }
.hero .btn-secondary:hover { background: rgba(10,31,51,0.32); border-color: #fff; color: #fff; }
.hero__badges { margin-top: var(--space-8); display: flex; gap: var(--space-3); flex-wrap: wrap; }
.hero__badges .badge { background: rgba(10,31,51,0.30); color: #fff; }

/* ---------- Grid helpers ---------- */
.grid { display: grid; gap: var(--grid-gutter); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--aside { grid-template-columns: 8fr 4fr; align-items: start; }
.grid--aside-rev { grid-template-columns: 4fr 8fr; align-items: start; }

/* ---------- Pillar / feature cards ---------- */
.feature { padding: var(--space-6); }
.feature__icon { width: 44px; height: 44px; margin-bottom: var(--space-4); color: var(--color-primary-500); }
.feature h3 { font-size: var(--fs-h3); margin-bottom: var(--space-2); }
.feature p { color: var(--color-text-secondary); }
.feature .badge { margin-top: var(--space-4); }

/* ---------- Stats row ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.stat { border-left: 1px solid var(--color-border); padding-left: var(--space-5); }
.stat__num { font-family: var(--font-heading); font-size: var(--fs-h1); font-weight: var(--fw-semibold); color: var(--color-primary-700); line-height: 1.1; }
.stat__label { color: var(--color-text-secondary); font-size: var(--fs-small); margin-top: var(--space-2); }

/* ---------- Product / TYZEPA highlight ---------- */
.product { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-12); align-items: center; }
.product__visual { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-8); }
.product__list { margin-top: var(--space-5); display: grid; gap: var(--space-3); }
.product__list li { display: flex; gap: var(--space-3); align-items: flex-start; color: var(--color-text-secondary); }
.product__list li svg { flex-shrink: 0; margin-top: 3px; color: var(--color-primary-500); }
.product__tags { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-5); }

/* ---------- Stepper (§5.7) ---------- */
.stepper { display: flex; align-items: center; gap: 0; margin: var(--space-5) 0; }
.stepper__node { width: 14px; height: 14px; border-radius: 50%; background: var(--color-border-strong); flex-shrink: 0; }
.stepper__node.done { background: var(--color-primary-500); }
.stepper__node.current { background: var(--color-primary-500); box-shadow: 0 0 0 4px var(--color-primary-100); }
.stepper__line { height: 2px; background: var(--color-border); flex: 1; min-width: 16px; }
.stepper__line.done { background: var(--color-primary-400); }
.stepper__labels { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--color-text-tertiary); }
.stepper__labels span.is-current { color: var(--color-primary-600); font-weight: var(--fw-semibold); }

.pipeline-card { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--space-8); align-items: center;
  border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-8); background: #fff;
  box-shadow: var(--shadow-card); transition: border-color var(--dur-base) var(--ease-out); }
.pipeline-card:hover { border-color: var(--color-primary-400); }
.pipeline-card.is-flagship { border-color: var(--color-primary-300); }
.pipeline-card__name { font-family: var(--font-heading); font-size: var(--fs-h2); font-weight: var(--fw-semibold); }
.pipeline-card__sub { color: var(--color-text-secondary); margin-top: var(--space-2); }
.pipeline-card__meta { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-4); }

/* ---------- Logo / molecule motif ---------- */
.motif { color: var(--color-primary-200); }

/* ---------- Footer (§5.4, §9.2) ---------- */
.footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding-block: var(--space-16); }
.footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: var(--space-10); }
.footer__brand-en { font-family: var(--font-ui); font-weight: var(--fw-semibold); font-size: 16px; color: #fff; }
.footer__brand-zh { font-family: var(--font-cjk-sans); font-size: 13px; color: var(--color-footer-muted); margin-top: 4px; }
.footer__desc { margin-top: var(--space-4); font-size: var(--fs-small); color: var(--color-footer-muted); max-width: 320px; line-height: var(--lh-base); }
.footer__col h5 { font-family: var(--font-ui); font-size: var(--fs-micro); font-weight: var(--fw-medium);
  letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--color-footer-muted); margin: 0 0 var(--space-4); }
.footer__col a { display: block; color: var(--color-footer-text); font-size: var(--fs-small); padding: 6px 0; transition: color var(--dur-fast) var(--ease-out); }
.footer__col a:hover { color: #fff; }
.footer__divider { height: 1px; background: rgba(255,255,255,0.10); margin-block: var(--space-10); }
.footer__compliance { font-size: var(--fs-small); color: var(--color-footer-muted); line-height: var(--lh-base); }
.footer__compliance h6 { font-family: var(--font-ui); font-size: var(--fs-small); font-weight: var(--fw-semibold);
  color: var(--color-footer-text); margin: 0 0 var(--space-2); }
.footer__compliance p { margin-bottom: var(--space-4); }
.footer__compliance a { color: var(--color-footer-text); text-decoration: underline; text-underline-offset: 3px; }
.footer__compliance a:hover { color: #fff; }
.footer__links { display: flex; flex-wrap: wrap; gap: var(--space-5); margin: var(--space-5) 0; }
.footer__copyright { font-size: var(--fs-small); color: var(--color-footer-muted); margin-top: var(--space-4); }

/* ---------- Timeline / process ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); counter-reset: step; }
.step { position: relative; padding-top: var(--space-6); }
.step__num { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--color-primary-500); font-weight: var(--fw-semibold); }
.step h3 { font-size: var(--fs-h3); margin-top: var(--space-2); margin-bottom: var(--space-2); }
.step p { color: var(--color-text-secondary); }
.step::before { content: ""; position: absolute; top: 0; left: 0; width: 32px; height: 2px; background: var(--color-primary-400); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--color-primary-900); color: #fff; border-radius: var(--radius-lg); padding: var(--space-16); text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.82); margin: var(--space-4) auto 0; max-width: 560px; }
.cta-band .btn-primary { background: #fff; color: var(--color-primary-600); margin-top: var(--space-8); }
.cta-band .btn-primary:hover { background: var(--color-primary-50); }

/* ---------- Article / prose (about, technology) ---------- */
.prose { max-width: 760px; }
.prose p { margin-bottom: var(--space-5); color: var(--color-text-primary); }
.prose h2 { font-size: var(--fs-h2); margin-top: var(--space-12); margin-bottom: var(--space-4); }
.prose h3 { font-size: var(--fs-h3); margin-top: var(--space-8); margin-bottom: var(--space-3); }
.prose ul.bullets { display: grid; gap: var(--space-3); margin: var(--space-5) 0; }
.prose ul.bullets li { display: flex; gap: var(--space-3); color: var(--color-text-secondary); }
.prose ul.bullets li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary-500); margin-top: 9px; flex-shrink: 0; }

/* ---------- Values / team cards ---------- */
.values { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
.value { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-6); background: #fff; }
.value h4 { font-family: var(--font-heading); font-size: var(--fs-h3); margin-bottom: var(--space-2); }
.value p { color: var(--color-text-secondary); }

/* ---------- Partner / manufacturing ---------- */
.partner-hero { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-10); align-items: center; }
.address-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-6); }
.address-card h4 { font-family: var(--font-heading); font-size: var(--fs-h3); margin-bottom: var(--space-3); }
.address-card p { color: var(--color-text-secondary); }
.address-card .mono { color: var(--color-text-primary); }

/* ---------- News / list ---------- */
.news-item { display: grid; grid-template-columns: 160px 1fr; gap: var(--space-6); padding: var(--space-6) 0; border-bottom: 1px solid var(--color-border); align-items: baseline; }
.news-item:last-child { border-bottom: none; }
.news-item__date { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--color-text-tertiary); }
.news-item h3 { font-size: var(--fs-h3); margin-bottom: var(--space-2); }
.news-item p { color: var(--color-text-secondary); }

/* ---------- Reveal animation (§7) ---------- */
/* Hidden only when JS is available (.js class added inline in <head>);
   without JS the content stays visible (progressive enhancement). */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }

/* ---------- Responsive (§4.3) ---------- */
@media (max-width: 1023px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .grid--aside, .grid--aside-rev { grid-template-columns: 1fr; }
  .product, .partner-hero { grid-template-columns: 1fr; gap: var(--space-8); }
  .pipeline-card { grid-template-columns: 1fr; gap: var(--space-6); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
  .steps { grid-template-columns: 1fr; }
  /* Collapse the desktop nav into the hamburger drawer on tablets / landscape
     phones too — otherwise the full link + language row overflows narrow
     viewports and gets clipped at the screen edge ("menu hidden").
     IMPORTANT: scope to .nav__inner so we only hide the DESKTOP copies — the
     drawer renders its own .nav__links / .nav__lang and must stay visible,
     otherwise the open drawer collapses to padding-only (~49px). */
  .nav__inner > .nav__links { display: none; }
  .nav__inner > .nav__lang { display: none; }
  .nav__hamburger { display: block; }
}

@media (max-width: 639px) {
  .section { padding-block: var(--space-16); }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .values { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .form-grid { grid-template-columns: 1fr; }
  .hero__inner { padding-block: var(--space-20); }
  .news-item { grid-template-columns: 1fr; gap: var(--space-2); }
  .cta-band { padding: var(--space-10) var(--space-6); }
  .stepper__labels { font-size: 9px; }
}

/* Mobile drawer shows lang toggle + links */
@media (min-width: 640px) {
  .nav__drawer.is-open { /* keeps hidden via .is-open only set on mobile */ }
}

/* ---------- Reduced motion (§7, §9.1) ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ---------- Focus visibility global ---------- */
:focus-visible { outline: none; box-shadow: var(--ring-focus); }

