/* ==========================================================================
   Solink — visual system
   Soft surfaces, large radii, staggered layout, one accent.
   Spacing ladder: 4 · 8 · 12 · 16 · 24 · 32 · 48 · 64 · 96
   ========================================================================== */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/assets/fonts/Inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/assets/fonts/Inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304,
    U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0,
    U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --paper: #f7f2e8;
  --paper-2: #efe8d9;
  --card: #fffdf7;
  --ink: #191c16;
  --ink-2: #41463c;
  --muted: #6a7063;
  --accent: #4a6438;
  --accent-deep: #354b28;
  --accent-soft: #e2e7d6;
  --accent-wash: #eef0e4;
  --white: #fffdf8;
  --danger: #93392a;

  --r-sm: 12px;
  --r-md: 20px;
  --r-lg: 32px;
  --r-xl: 44px;
  --r-pill: 999px;

  --shadow-sm: 0 2px 6px rgba(28, 32, 24, 0.04), 0 12px 32px -20px rgba(28, 32, 24, 0.28);
  --shadow-md: 0 8px 24px rgba(28, 32, 24, 0.05), 0 32px 72px -44px rgba(28, 32, 24, 0.45);
  --shadow-lift: 0 16px 40px rgba(28, 32, 24, 0.08), 0 48px 96px -56px rgba(28, 32, 24, 0.5);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --step--2: 0.75rem;
  --step--1: 0.9rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: clamp(1.375rem, 1vw + 1.1rem, 1.75rem);
  --step-3: clamp(1.75rem, 1.8vw + 1.2rem, 2.5rem);
  --step-4: clamp(2.25rem, 3.4vw + 1rem, 3.75rem);
  --step-5: clamp(2.75rem, 5.2vw + 0.8rem, 5.25rem);

  --gutter: clamp(24px, 4vw, 64px);
  --max: 1320px;

  --ease: cubic-bezier(0.22, 0.68, 0.16, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 200ms;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.6;
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

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

[hidden] { display: none !important; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 540;
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}

h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-1); letter-spacing: -0.025em; line-height: 1.28; }

p { margin: 0; }
p + p { margin-top: 16px; }

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

ul, ol { margin: 0; padding: 0; list-style: none; }

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

::selection { background: var(--accent); color: var(--white); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 16px; top: -96px; z-index: 100;
  background: var(--ink); color: var(--white);
  padding: 12px 24px; border-radius: var(--r-pill);
  font-size: var(--step--1);
}
.skip-link:focus { top: 16px; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(64px, 7vw, 96px); position: relative; }
.section--tight { padding-block: clamp(48px, 5vw, 64px); }
.section--tint {
  background: var(--paper-2);
  border-radius: var(--r-xl);
  margin-inline: clamp(8px, 1.6vw, 24px);
}
.section--tint > .wrap { padding-inline: clamp(16px, 3vw, 40px); }

.label {
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.label::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

/* ---------------------------------------------------------------- buttons */
.btn {
  --btn-bg: var(--accent);
  --btn-fg: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 14px 28px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 0;
  border-radius: var(--r-pill);
  font-size: var(--step--1);
  font-weight: 560;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 10px 24px -12px rgba(53, 75, 40, 0.55);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.btn:hover {
  background: var(--accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 18px 32px -14px rgba(53, 75, 40, 0.6);
}
.btn:active { transform: translateY(0) scale(0.985); }
.btn[disabled], .btn[aria-disabled='true'] { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn--small { min-height: 44px; padding: 10px 22px; }

.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  box-shadow: inset 0 0 0 2px rgba(25, 28, 22, 0.14);
}
.btn--outline:hover { --btn-bg: var(--ink); --btn-fg: var(--paper); box-shadow: none; }

.btn--light {
  --btn-bg: var(--white);
  --btn-fg: var(--ink);
  box-shadow: 0 16px 32px -20px rgba(0, 0, 0, 0.5);
}
.btn--light:hover { --btn-bg: var(--paper); --btn-fg: var(--ink); }

.btn-arrow { width: 16px; height: 16px; flex: none; transition: transform var(--dur) var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-size: var(--step--1);
  font-weight: 560;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}
.link-arrow-icon { width: 16px; height: 16px; transition: transform var(--dur) var(--ease); }
.link-arrow:hover { color: var(--accent); }
.link-arrow:hover .link-arrow-icon { transform: translateX(4px); }

.text-button {
  padding: 8px 0;
  border: 0;
  background: none;
  font-size: var(--step--1);
  font-weight: 560;
  color: var(--ink);
  border-radius: var(--r-pill);
  transition: color var(--dur) var(--ease);
}
.text-button:hover { color: var(--accent); }
.text-button--light { color: var(--paper); }
.text-button--light:hover { color: var(--white); }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding-block: 12px;
  transition: padding var(--dur) var(--ease);
  will-change: padding;
}
.site-header {
  background: linear-gradient(to bottom, var(--paper) 0%, var(--paper) 82%, rgba(247, 242, 232, 0) 100%);
  padding-bottom: 20px;
}
.site-header.is-scrolled {
  background: linear-gradient(to bottom, var(--paper) 0%, var(--paper) 76%, rgba(247, 242, 232, 0) 100%);
}
.header-inner {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
  padding: 8px 8px 8px 20px;
  background: var(--card);
  border-radius: var(--r-pill);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled .header-inner { box-shadow: var(--shadow-md); }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  flex: none;
  border-radius: var(--r-pill);
}
.brand-mark { width: 28px; height: 28px; flex: none; }
.brand-type { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font-size: 1.25rem; font-weight: 620; letter-spacing: -0.05em; }
.brand-sub {
  font-size: 0.625rem; font-weight: 560; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); margin-top: 4px;
}

.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a {
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-2);
  padding: 10px 16px;
  border-radius: var(--r-pill);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.main-nav a:hover { background: var(--accent-wash); color: var(--ink); }
.main-nav a[aria-current='page'] { color: var(--accent-deep); background: var(--accent-soft); font-weight: 600; }

.header-cta { flex: none; min-height: 46px; padding: 12px 24px; }

.menu-toggle {
  display: none;
  width: 46px; height: 46px;
  margin-left: auto;
  padding: 0;
  border: 0;
  background: var(--accent-wash);
  border-radius: 50%;
  transition: background-color var(--dur) var(--ease);
}
.menu-toggle:hover { background: var(--accent-soft); }
.menu-toggle-box { display: block; width: 18px; height: 12px; margin-inline: auto; position: relative; }
.menu-toggle-box span {
  position: absolute; left: 0; right: 0; height: 1.8px; border-radius: 2px; background: var(--ink);
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}
.menu-toggle-box span:first-child { top: 1px; }
.menu-toggle-box span:last-child { top: 10px; }
.menu-toggle[aria-expanded='true'] .menu-toggle-box span:first-child { top: 5px; transform: rotate(45deg); }
.menu-toggle[aria-expanded='true'] .menu-toggle-box span:last-child { top: 5px; transform: rotate(-45deg); }

.mobile-menu {
  position: relative;
  display: none;
  margin-top: 8px;
  padding: 16px 24px 32px;
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  animation: menu-in 240ms var(--ease-out) both;
}
.mobile-menu[hidden] { display: none; }
.mobile-nav { display: flex; flex-direction: column; }
.mobile-nav a { padding-block: 16px; font-size: var(--step-2); font-weight: 520; letter-spacing: -0.03em; }
.mobile-menu-cta { width: 100%; margin-top: 16px; }
.mobile-menu-meta { margin-top: 24px; font-size: var(--step--1); color: var(--muted); line-height: 1.7; }

@keyframes menu-in {
  from { opacity: 0; transform: translateY(-8px) scale(0.99); }
  to { opacity: 1; transform: none; }
}

/* ---------------------------------------------------------------- hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
  gap: clamp(24px, 3vw, 48px);
  padding: clamp(24px, 3vw, 48px) var(--gutter) clamp(48px, 5vw, 72px);
  max-width: var(--max);
  margin-inline: auto;
}
.hero-copy { padding-block: 24px; }
.hero-copy-inner { max-width: 620px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: var(--step--1);
  font-weight: 520;
  color: var(--muted);
  margin-bottom: 24px;
}
.hero-kicker::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(74, 100, 56, 0.12);
  animation: pulse 3.2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(74, 100, 56, 0.12); }
  50% { box-shadow: 0 0 0 10px rgba(74, 100, 56, 0.05); }
}
.hero h1 { font-size: clamp(2.9rem, 5vw, 5rem); letter-spacing: -0.055em; line-height: 0.96; }
.hero-accent { color: var(--accent); }
.hero-lede {
  margin-top: 24px;
  max-width: 42ch;
  font-size: clamp(1rem, 0.7vw + 0.85rem, 1.1875rem);
  line-height: 1.62;
  color: var(--ink-2);
}
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; margin-top: 32px; }
.hero-foot {
  margin-top: 40px;
  font-size: var(--step--1);
  color: var(--muted);
  max-width: 38ch;
  line-height: 1.7;
  padding-left: 16px;
  border-left: 2px solid var(--accent-soft);
}

.hero-media {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: #22271f;
  min-height: clamp(420px, 62vh, 640px);
  box-shadow: var(--shadow-md);
  transform: translateY(8px);
}
.hero-media > img {
  width: 100%; height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  animation: hero-in 1.4s var(--ease-out) both;
}
@keyframes hero-in {
  from { transform: scale(1.08); opacity: 0.6; }
  to { transform: scale(1); opacity: 1; }
}
.hero-inset {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px 12px 12px;
  background: rgba(255, 253, 247, 0.94);
  backdrop-filter: blur(12px);
  color: var(--ink);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.hero-inset:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.hero-inset-media {
  display: block;
  width: 56px; height: 56px;
  background: var(--accent-wash);
  border-radius: var(--r-sm);
  flex: none;
}
.hero-inset-media img { width: 100%; height: 100%; object-fit: contain; padding: 8px; }
.hero-inset-label { display: flex; flex-direction: column; gap: 2px; }
.hero-inset-label span:first-child { font-size: var(--step--1); font-weight: 620; }
.hero-inset-label span:last-child { font-size: var(--step--2); color: var(--muted); }

/* ---------------------------------------------------------------- capabilities */
.capabilities { padding-block: 0 clamp(48px, 5vw, 64px); }
.capability-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px 32px;
  padding: 32px;
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.capability { padding: 4px; }
.capability h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.capability h3::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.capability p { font-size: var(--step--1); line-height: 1.55; color: var(--muted); max-width: 30ch; }

/* ---------------------------------------------------------------- section head */
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 380px);
  gap: 32px 64px;
  align-items: end;
  margin-bottom: clamp(32px, 4vw, 56px);
}
.section-head h2 { font-size: clamp(2rem, 2.9vw, 3.1rem); letter-spacing: -0.045em; }
.section-aside p { font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 42ch; }
.section-aside .link-arrow { margin-top: 16px; }

/* ---------------------------------------------------------------- catalogue tiles */
.catalogue-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 24px; align-items: start; }
.cat-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  padding: 28px;
  background: var(--card);
  border-radius: var(--r-lg);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 260ms var(--ease), box-shadow 260ms var(--ease);
}
.cat-tile:nth-child(2) { margin-top: 40px; }
.cat-tile:nth-child(3) { margin-top: 80px; }
.cat-tile::after {
  content: '';
  position: absolute;
  width: 240px; height: 240px;
  right: -80px; top: -80px;
  border-radius: 50%;
  background: var(--accent-wash);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}
.cat-tile:hover { transform: translateY(-8px); box-shadow: var(--shadow-lift); }
.cat-tile:hover::after { opacity: 1; transform: scale(1); }
.cat-tile-copy { position: relative; z-index: 1; }
.cat-tile-kicker {
  font-size: var(--step--2); font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
}
.cat-tile h3 { font-size: clamp(1.375rem, 1.4vw, 1.75rem); letter-spacing: -0.035em; margin-bottom: 8px; }
.cat-tile p:not(.cat-tile-kicker) { font-size: var(--step--1); color: var(--muted); max-width: 28ch; line-height: 1.55; }
.cat-tile-media {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 0;
  min-height: 220px;
}
.cat-tile-media img {
  max-height: 220px;
  width: auto;
  max-width: 82%;
  object-fit: contain;
  filter: drop-shadow(0 24px 28px rgba(30, 34, 26, 0.14));
  transition: transform 320ms var(--ease-out);
}
.cat-tile--lg .cat-tile-media img { max-height: 280px; }
.cat-tile:hover .cat-tile-media img { transform: translateY(-6px) scale(1.03); }
.cat-tile-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 16px;
  font-size: var(--step--1);
  color: var(--muted);
  position: relative;
  z-index: 1;
}
.tile-arrow {
  width: 40px; height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--accent-wash);
  border-radius: 50%;
  color: var(--ink);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.tile-arrow svg { width: 16px; height: 16px; }
.cat-tile:hover .tile-arrow { background: var(--accent); color: var(--white); transform: translateX(2px); }

/* ---------------------------------------------------------------- segments */
.segments { padding-block: clamp(64px, 7vw, 96px); }
.segments-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.segments-intro { position: sticky; top: 112px; }
.segments-intro h2 { font-size: clamp(2rem, 3vw, 3.1rem); letter-spacing: -0.05em; max-width: 11ch; }
.segments-lede { margin-top: 24px; font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 38ch; }
.segment-tabs { display: flex; flex-direction: column; gap: 8px; margin-top: 32px; }
.segment-tab {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 16px 20px;
  border: 0;
  border-radius: var(--r-md);
  background: transparent;
  text-align: left;
  color: var(--ink-2);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.segment-tab:hover { background: var(--card); }
.segment-tab[aria-selected='true'] { background: var(--card); color: var(--ink); box-shadow: var(--shadow-sm); }
.segment-num { font-size: var(--step--2); color: var(--muted); width: 24px; flex: none; font-variant-numeric: tabular-nums; }
.segment-tab[aria-selected='true'] .segment-num { color: var(--accent); }
.segment-tab-copy { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.segment-title { font-size: var(--step-0); font-weight: 540; letter-spacing: -0.02em; }
.segment-meta { font-size: var(--step--2); color: var(--muted); }
.segment-arrow {
  width: 32px; height: 32px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-deep);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.segment-arrow svg { width: 14px; height: 14px; }
.segment-tab[aria-selected='true'] .segment-arrow { opacity: 1; transform: none; }

.segment-panel { display: flex; flex-direction: column; gap: 24px; animation: panel-in 320ms var(--ease-out) both; }
.segment-panel[hidden] { display: none; }
@keyframes panel-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
.segment-photo {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
}
.segment-photo img { width: 100%; height: 100%; object-fit: cover; }
.segment-figures { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.segment-figure { padding: 20px; background: var(--card); border-radius: var(--r-md); }
.segment-figure p:first-child {
  font-size: var(--step--2); color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px;
}
.figure-value { font-size: clamp(1.5rem, 2vw, 2rem); font-weight: 500; letter-spacing: -0.045em; line-height: 1; }
.figure-value span { font-size: var(--step--2); font-weight: 500; color: var(--muted); letter-spacing: 0; margin-left: 2px; }
.segment-note { font-size: var(--step--1); line-height: 1.65; color: var(--ink-2); max-width: 54ch; }

/* ---------------------------------------------------------------- featured */
.featured {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  border-radius: var(--r-xl);
  background: var(--accent-wash);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.featured-media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 440px;
  padding: 48px;
}
.featured-media::before {
  content: '';
  position: absolute;
  inset: 8%;
  background: radial-gradient(circle at 50% 46%, rgba(255, 253, 247, 0.95) 0%, rgba(255, 253, 247, 0.5) 44%, rgba(255, 253, 247, 0) 70%);
}
.featured-media img {
  position: relative;
  max-height: 360px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 32px 40px rgba(30, 34, 26, 0.18));
  transition: transform 320ms var(--ease-out);
}
.featured:hover .featured-media img { transform: translateY(-8px) rotate(-1deg); }
.featured-copy { padding: clamp(32px, 4vw, 64px); display: flex; flex-direction: column; align-items: flex-start; }
.featured-copy h2 { font-size: clamp(1.9rem, 2.6vw, 2.75rem); letter-spacing: -0.045em; max-width: 13ch; }
.featured-lede { margin-top: 24px; font-size: var(--step--1); line-height: 1.65; color: var(--ink-2); max-width: 44ch; }
.mini-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; width: 100%; margin-top: 32px; }
.mini-specs > div { padding: 16px 20px; background: rgba(255, 253, 247, 0.72); border-radius: var(--r-md); }
.mini-specs p { font-size: var(--step--2); color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; }
.mini-specs span { display: block; margin-top: 4px; font-size: var(--step-1); font-weight: 540; letter-spacing: -0.02em; }
.featured-copy .btn { margin-top: 32px; }

/* ---------------------------------------------------------------- steps */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; align-items: start; }
.step {
  padding: 24px;
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.step:nth-child(2) { margin-top: 24px; }
.step:nth-child(3) { margin-top: 48px; }
.step:nth-child(4) { margin-top: 72px; }
.step-num {
  display: inline-grid;
  place-items: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: var(--step--2);
  font-weight: 620;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.step h3 { font-size: var(--step-1); margin-bottom: 8px; }
.step p:last-child { font-size: var(--step--1); line-height: 1.6; color: var(--muted); max-width: 26ch; }

/* ---------------------------------------------------------------- home company */
.home-company {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.home-company-photo {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: var(--shadow-md);
}
.home-company-photo img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; transition: transform 700ms var(--ease-out); }
.home-company:hover .home-company-photo img { transform: scale(1.04); }
.home-company-photo figcaption, .chapter-photo figcaption {
  margin-top: 0;
  padding: 12px 20px;
  font-size: var(--step--2);
  color: var(--muted);
  background: var(--card);
}
.home-company-copy h2 { font-size: clamp(1.9rem, 2.6vw, 2.7rem); letter-spacing: -0.045em; max-width: 15ch; }
.home-company-copy p { margin-top: 24px; font-size: var(--step--1); line-height: 1.7; color: var(--ink-2); max-width: 50ch; }
.home-company-copy .link-arrow { margin-top: 24px; }

/* ---------------------------------------------------------------- CTA band */
.cta-band { padding: clamp(16px, 2vw, 24px); }
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: clamp(32px, 5vw, 64px);
  background: var(--accent);
  color: var(--white);
  border-radius: var(--r-xl);
  overflow: hidden;
}
.cta-inner::before {
  content: '';
  position: absolute;
  right: -120px; bottom: -160px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: rgba(255, 253, 247, 0.07);
}
.cta-inner > * { position: relative; }
.cta-inner h2 { font-size: clamp(1.9rem, 2.8vw, 2.75rem); letter-spacing: -0.045em; max-width: 16ch; }
.cta-inner p { margin-top: 12px; font-size: var(--step--1); color: rgba(255, 253, 247, 0.78); max-width: 46ch; }
.cta-inner .btn { flex: none; }

/* ---------------------------------------------------------------- page head */
.page-head { padding-top: clamp(24px, 3vw, 32px); padding-bottom: clamp(24px, 3vw, 32px); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: var(--step--2); color: var(--muted); }
.breadcrumb li + li::before { content: '›'; margin-right: 8px; color: var(--muted); opacity: 0.6; }
.breadcrumb a { transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: var(--accent); }
.page-head .label { margin-top: 24px; }
.page-head-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: 24px 64px;
  align-items: end;
}
.page-head h1 { font-size: clamp(2.5rem, 4.6vw, 4.75rem); letter-spacing: -0.055em; line-height: 0.96; }
.page-head-grid p { font-size: var(--step-1); line-height: 1.6; color: var(--ink-2); max-width: 48ch; padding-bottom: 8px; }

/* ---------------------------------------------------------------- catalogue page */
.catalogue-page { padding-block: clamp(16px, 2vw, 24px) clamp(64px, 7vw, 96px); }
.catalogue-tools {
  position: sticky;
  top: 96px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding: 12px;
  background: rgba(255, 253, 247, 0.9);
  backdrop-filter: blur(12px);
  border-radius: var(--r-pill);
  box-shadow: var(--shadow-sm);
}
.filters { display: flex; flex-wrap: wrap; gap: 4px; }
.filter {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px;
  padding: 8px 18px;
  border: 0;
  background: transparent;
  border-radius: var(--r-pill);
  font-size: var(--step--1);
  color: var(--ink-2);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.filter span { font-size: var(--step--2); color: var(--muted); font-variant-numeric: tabular-nums; }
.filter:hover { background: var(--accent-wash); }
.filter.is-active { background: var(--ink); color: var(--paper); }
.filter.is-active span { color: rgba(247, 242, 232, 0.64); }
.catalogue-search { flex: 0 1 280px; }
.catalogue-search input {
  width: 100%;
  min-height: 44px;
  padding: 8px 18px;
  border: 0;
  background: var(--accent-wash);
  border-radius: var(--r-pill);
  font-size: var(--step--1);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.catalogue-search input:hover { background: var(--accent-soft); }
.catalogue-search input:focus { background: var(--white); outline: none; box-shadow: 0 0 0 3px var(--accent); }
.filter-status { padding: 8px 4px 16px; font-size: var(--step--2); color: var(--muted); }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border-radius: var(--r-lg);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.product-card-media {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  background: var(--accent-wash);
  overflow: hidden;
}
.product-card-media img {
  max-height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 20px 22px rgba(30, 34, 26, 0.12));
  transition: transform 320ms var(--ease-out);
}
.product-card:hover .product-card-media img { transform: translateY(-6px) scale(1.02); }
.product-card-body { display: flex; flex-direction: column; flex: 1; padding: 24px; }
.product-card-cat {
  font-size: var(--step--2); font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 8px;
}
.product-card h3 { font-size: var(--step-1); letter-spacing: -0.03em; }
.product-card-sub { margin-top: 8px; font-size: var(--step--1); line-height: 1.55; color: var(--muted); flex: 1; }
.product-card-spec {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-top: 16px;
  font-size: var(--step--2); color: var(--ink-2);
}
.card-arrow {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--accent-wash);
  color: var(--ink);
  flex: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.card-arrow svg { width: 14px; height: 14px; }
.product-card:hover .card-arrow { background: var(--accent); color: var(--white); transform: translateX(2px); }
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-block: 64px;
  color: var(--muted);
  background: var(--card);
  border-radius: var(--r-lg);
}
.catalogue-note {
  display: flex; justify-content: space-between; align-items: center; gap: 32px;
  margin-top: 48px;
  padding: 24px 32px;
  background: var(--accent-wash);
  border-radius: var(--r-lg);
}
.catalogue-note p { font-size: var(--step--1); color: var(--ink-2); max-width: 58ch; line-height: 1.6; }
.catalogue-note .link-arrow { flex: none; }

/* ---------------------------------------------------------------- product detail */
.page-head--product { padding-bottom: clamp(16px, 2vw, 24px); }
.page-head--product .page-head-grid { grid-template-columns: minmax(0, 0.95fr) minmax(280px, 1.05fr); }
.product-detail { padding-block: clamp(24px, 3vw, 32px) clamp(48px, 5vw, 64px); }
.product-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  gap: clamp(32px, 4vw, 64px);
  align-items: start;
}
.product-gallery { display: flex; flex-direction: column; gap: 16px; }
.gallery-main {
  aspect-ratio: 5 / 4;
  display: flex; align-items: center; justify-content: center;
  background: var(--card);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-md);
  padding: clamp(24px, 4vw, 56px);
  overflow: hidden;
}
.gallery-main img {
  width: 100%; height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 30px 32px rgba(30, 34, 26, 0.14));
  animation: gallery-in 320ms var(--ease-out) both;
}
@keyframes gallery-in {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: none; }
}
.gallery-thumbs { display: flex; gap: 12px; }
.gallery-thumb {
  width: 84px; height: 84px;
  padding: 8px;
  background: var(--card);
  border: 0;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.gallery-thumb img { width: 100%; height: 100%; object-fit: contain; }
.gallery-thumb:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.gallery-thumb.is-active { box-shadow: 0 0 0 2px var(--accent); }
.product-info { position: sticky; top: 112px; }
.key-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.key-spec { padding: 20px; background: var(--card); border-radius: var(--r-md); box-shadow: var(--shadow-sm); }
.key-spec p { font-size: var(--step--2); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.key-spec span { display: block; margin-top: 6px; font-size: var(--step-1); font-weight: 540; letter-spacing: -0.02em; }
.product-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 24px; }
.product-disclaimer { margin-top: 24px; font-size: var(--step--2); line-height: 1.6; color: var(--muted); max-width: 46ch; }

.feature-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.feature-item {
  padding: 32px;
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.feature-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-item h3 { font-size: var(--step-1); margin-bottom: 8px; }
.feature-item p { font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 34ch; }

.spec-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.spec-intro h2 { font-size: clamp(1.9rem, 2.6vw, 2.6rem); letter-spacing: -0.045em; }
.spec-intro > p { margin-top: 20px; font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 38ch; }
.spec-subhead { margin-top: 32px; font-size: var(--step--1); letter-spacing: -0.01em; }
.plain-list { margin-top: 8px; }
.plain-list li { padding: 12px 16px; font-size: var(--step--1); color: var(--ink-2); border-radius: var(--r-sm); }
.plain-list li:nth-child(odd) { background: var(--card); }
.table-wrap {
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 8px 24px;
  overflow: hidden;
}
.table-wrap--soft { box-shadow: none; background: var(--accent-wash); }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { padding: 16px 0; vertical-align: top; text-align: left; }
.spec-table th { width: 42%; padding-right: 24px; font-weight: 460; font-size: var(--step--1); color: var(--muted); }
.spec-table td { font-size: var(--step--1); color: var(--ink); font-variant-numeric: tabular-nums; }
.spec-table tr + tr th, .spec-table tr + tr td { box-shadow: 0 -1px 0 rgba(25, 28, 22, 0.06); }
.spec-note { margin-top: 16px; font-size: var(--step--2); line-height: 1.6; color: var(--muted); max-width: 60ch; }

/* ---------------------------------------------------------------- solutions */
.chapter-nav { display: flex; flex-wrap: wrap; gap: 8px; padding-block: 8px 16px; }
.chapter-nav a {
  font-size: var(--step--1);
  color: var(--ink-2);
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.chapter-nav a:hover { background: var(--accent); color: var(--white); transform: translateY(-2px); }

.solution-chapter { padding-block: clamp(48px, 6vw, 88px); }
.solution-chapter--flip .solution-chapter-grid {
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.4fr);
}
.solution-chapter--flip .chapter-rail { order: 2; }
.solution-chapter--flip .chapter-rail h2 { margin-left: auto; }
.solution-chapter--flip .chapter-rail .chapter-range { text-align: right; }
.solution-chapter-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.4fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.chapter-rail { position: sticky; top: 112px; }
.chapter-rail h2 { font-size: clamp(1.9rem, 2.8vw, 2.9rem); letter-spacing: -0.05em; max-width: 10ch; }
.chapter-range { margin-top: 12px; font-size: var(--step--1); color: var(--muted); }
.chapter-body { display: flex; flex-direction: column; gap: 32px; }
.chapter-photo {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 9;
}
.chapter-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 700ms var(--ease-out); }
.chapter-photo:hover img { transform: scale(1.03); }
.chapter-copy { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr); gap: 32px; align-items: start; }
.chapter-text p { font-size: var(--step--1); line-height: 1.7; color: var(--ink-2); max-width: 52ch; }
.chapter-text p + p { margin-top: 16px; }
.check-list { display: flex; flex-direction: column; gap: 8px; }
.check-list li {
  position: relative;
  padding: 12px 16px 12px 36px;
  border-radius: var(--r-sm);
  background: var(--card);
  font-size: var(--step--1);
  color: var(--ink-2);
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 16px; top: 19px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
}
.chapter-config { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr); gap: 24px; }
.config-table { width: 100%; border-collapse: collapse; }
.config-table th, .config-table td { padding: 12px 16px; font-size: var(--step--1); text-align: left; vertical-align: top; }
.config-table th { width: 48%; color: var(--muted); font-weight: 460; }
.config-table tr:nth-child(odd) th, .config-table tr:nth-child(odd) td { background: rgba(255, 253, 247, 0.55); }
.chapter-equipment { padding: 24px; background: var(--card); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); }
.chapter-equipment p { font-size: var(--step--2); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 12px; }
.chapter-equipment div { display: flex; flex-direction: column; gap: 4px; }
.chapter-equipment a {
  font-size: var(--step--1);
  font-weight: 520;
  padding: 10px 14px;
  border-radius: var(--r-pill);
  background: var(--accent-wash);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.chapter-equipment a:hover { background: var(--accent-soft); transform: translateX(4px); }

/* worksheet */
.worksheet { padding-block: clamp(64px, 7vw, 96px); }
.worksheet-card {
  padding: clamp(24px, 4vw, 48px);
  background: var(--accent);
  color: var(--white);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.worksheet-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.worksheet .label { color: rgba(255, 253, 247, 0.72); }
.worksheet h2 { font-size: clamp(1.9rem, 2.8vw, 2.9rem); letter-spacing: -0.045em; max-width: 15ch; }
.worksheet-copy > p { margin-top: 20px; font-size: var(--step--1); line-height: 1.65; color: rgba(255, 253, 247, 0.78); max-width: 48ch; }
.sizer { margin-top: 24px; }
.sizer-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.sizer-field { display: flex; flex-direction: column; gap: 8px; font-size: var(--step--1); color: rgba(255, 253, 247, 0.88); }
.sizer-field span { font-size: var(--step--2); color: rgba(255, 253, 247, 0.58); }
.sizer-field input {
  width: 100%;
  min-height: 52px;
  padding: 12px 16px;
  border: 0;
  background: rgba(255, 253, 247, 0.1);
  color: var(--white);
  border-radius: var(--r-md);
  font-size: var(--step-1);
  font-variant-numeric: tabular-nums;
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.sizer-field input:hover { background: rgba(255, 253, 247, 0.16); }
.sizer-field input:focus { outline: none; background: rgba(255, 253, 247, 0.18); box-shadow: 0 0 0 2px var(--white); }
.sizer-field input[aria-invalid='true'] { box-shadow: 0 0 0 2px #dcae9c; }
.sizer-actions { display: flex; align-items: center; gap: 16px; margin-top: 24px; }
.sizer-error { margin-top: 16px; font-size: var(--step--1); color: #f3d2c6; }
.worksheet-results {
  background: var(--white);
  color: var(--ink);
  padding: clamp(24px, 3vw, 32px);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}
.results-kicker { font-size: var(--step--2); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 8px; }
.result-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: baseline;
  padding: 16px;
  border-radius: var(--r-md);
  font-size: var(--step--1);
  color: var(--muted);
}
.result-row:nth-child(odd) { background: var(--accent-wash); }
.result-row strong {
  font-size: clamp(1.6rem, 2.2vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.result-row > span:last-child { font-size: var(--step--2); color: var(--muted); min-width: 54px; text-align: right; }
.result-row--small strong { font-size: var(--step-1); }
.calc-method { margin-top: 8px; }
.calc-method summary {
  padding: 16px;
  border-radius: var(--r-md);
  font-size: var(--step--1);
  font-weight: 520;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--dur) var(--ease);
}
.calc-method summary:hover { background: var(--accent-wash); }
.calc-method summary::-webkit-details-marker { display: none; }
.calc-method summary::after { content: '+'; font-size: 1.1rem; color: var(--muted); transition: transform var(--dur) var(--ease); }
.calc-method[open] summary::after { content: '−'; }
.calc-method div { padding: 0 16px 16px; font-size: var(--step--2); line-height: 1.6; color: var(--muted); }
.calc-method p + p { margin-top: 8px; }
.results-note { margin-top: 8px; padding: 12px 16px; font-size: var(--step--2); line-height: 1.55; color: var(--muted); }

/* FAQ */
.faq-layout { display: grid; grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.faq-intro { position: sticky; top: 112px; }
.faq-intro h2 { font-size: clamp(1.9rem, 2.6vw, 2.7rem); letter-spacing: -0.045em; }
.faq-intro p { margin-top: 20px; font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 34ch; }
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  background: var(--card);
  border-radius: var(--r-md);
  padding: 0 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur) var(--ease);
}
.faq-item[open] { box-shadow: var(--shadow-md); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding-block: 20px;
  font-size: var(--step-0);
  font-weight: 520;
  letter-spacing: -0.015em;
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  display: grid;
  place-items: center;
  width: 32px; height: 32px;
  flex: none;
  border-radius: 50%;
  background: var(--accent-wash);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--accent-deep);
  transition: transform 240ms var(--ease), background-color var(--dur) var(--ease);
}
.faq-item[open] summary::after { content: '−'; background: var(--accent); color: var(--white); transform: rotate(180deg); }
.faq-answer { padding-bottom: 20px; max-width: 64ch; animation: panel-in 240ms var(--ease-out) both; }
.faq-answer p { font-size: var(--step--1); line-height: 1.7; color: var(--muted); }

/* ---------------------------------------------------------------- company */
.company-hero { padding-block: 8px 0; }
.company-photo {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: var(--shadow-md);
}
.company-photo img { width: 100%; max-height: 560px; object-fit: cover; object-position: center 42%; }
.company-hero figcaption { margin-top: 12px; padding-left: 8px; font-size: var(--step--2); color: var(--muted); }
.company-intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.company-intro h2 { font-size: clamp(2rem, 3.4vw, 3.5rem); letter-spacing: -0.05em; max-width: 14ch; }
.company-intro-text p { font-size: var(--step-1); line-height: 1.6; color: var(--ink-2); max-width: 46ch; }
.company-intro-text p + p { margin-top: 24px; }
.scope-list { display: flex; flex-direction: column; gap: 16px; }
.scope-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 24px;
  padding: 32px;
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.scope-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.scope-num {
  display: grid;
  place-items: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: var(--step--2);
  font-weight: 620;
}
.scope-item h3 { font-size: var(--step-2); letter-spacing: -0.035em; margin-bottom: 8px; }
.scope-item p:last-child { font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 62ch; }
.docs-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.docs-copy h2 { font-size: clamp(1.9rem, 2.7vw, 2.75rem); letter-spacing: -0.045em; max-width: 14ch; }
.docs-copy p { margin-top: 20px; font-size: var(--step--1); line-height: 1.65; color: var(--muted); max-width: 42ch; }
.docs-copy .link-arrow { margin-top: 24px; }
.audience-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.audience {
  padding: 24px;
  background: var(--card);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.audience:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.audience h3 { font-size: var(--step-1); margin-bottom: 8px; }
.audience p { font-size: var(--step--1); line-height: 1.6; color: var(--muted); }

/* ---------------------------------------------------------------- contact */
.contact-page { padding-block: clamp(24px, 4vw, 48px) clamp(48px, 5vw, 64px); }
.contact-grid { display: grid; grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr); gap: clamp(32px, 5vw, 64px); align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-block { padding: 24px; background: var(--card); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); }
.contact-block h2 { font-size: var(--step-1); margin-bottom: 12px; }
.contact-block p { font-size: var(--step--1); line-height: 1.65; color: var(--muted); }
.contact-block .check-list { margin-top: 0; gap: 4px; }
.contact-block .check-list li { background: var(--accent-wash); font-size: var(--step--1); padding-block: 10px; }
.contact-block .check-list li::before { top: 17px; }
.contact-block--small .contact-note { margin-top: 16px; color: var(--ink-2); }
.contact-provider { margin-top: 12px; font-size: var(--step--2); line-height: 1.6; color: var(--muted); }

.contact-form-wrap {
  background: var(--card);
  border-radius: var(--r-xl);
  padding: clamp(24px, 3vw, 40px);
  box-shadow: var(--shadow-md);
}
.form-heading { margin-bottom: 16px; }
.form-heading .label { margin-bottom: 8px; }
.form-product-note {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: var(--step--1);
}
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; flex: 1; }
.field label { font-size: var(--step--1); font-weight: 520; }
.field label span { color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 52px;
  padding: 12px 16px;
  background: var(--accent-wash);
  border: 0;
  border-radius: var(--r-md);
  font-size: var(--step--1);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field textarea { min-height: 160px; resize: vertical; line-height: 1.6; }
.field input:hover, .field select:hover, .field textarea:hover { background: var(--accent-soft); }
.field input:focus, .field select:focus, .field textarea:focus {
  background: var(--white);
  outline: none;
  box-shadow: 0 0 0 2px var(--accent);
}
.field input[aria-invalid='true'], .field textarea[aria-invalid='true'], .field select[aria-invalid='true'] {
  box-shadow: 0 0 0 2px var(--danger);
}
.field-error { min-height: 0; font-size: var(--step--2); color: var(--danger); }
.field-error:empty { display: none; }
.field--check { flex-direction: row; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.field--check input { width: 20px; min-height: 20px; height: 20px; margin-top: 2px; flex: none; accent-color: var(--accent); }
.field--check label { font-size: var(--step--1); font-weight: 400; color: var(--muted); line-height: 1.55; }
.field--check label a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }
.field--check .field-error { width: 100%; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-submit { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 8px; }
.form-submit p { font-size: var(--step--2); color: var(--muted); max-width: 32ch; }
.form-error {
  margin-bottom: 16px;
  padding: 12px 16px;
  background: #f7e4db;
  color: var(--danger);
  font-size: var(--step--1);
  border-radius: var(--r-md);
}
.form-noscript { margin-top: 16px; font-size: var(--step--2); color: var(--muted); }
.form-success { padding: 16px 8px 32px; }
.form-success h2 { font-size: clamp(1.7rem, 2.2vw, 2.2rem); letter-spacing: -0.04em; margin-bottom: 16px; }
.form-success h2:focus { outline: none; }
.form-success p { font-size: var(--step--1); color: var(--muted); line-height: 1.65; max-width: 44ch; }
.form-success .btn { margin-top: 24px; }
.submit-loading { pointer-events: none; opacity: 0.7; }

/* ---------------------------------------------------------------- 404 / legal */
.notfound { padding-block: clamp(64px, 12vw, 160px); }
.notfound h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); letter-spacing: -0.055em; margin-top: 8px; }
.notfound p:not(.label) { margin-top: 24px; font-size: var(--step-1); color: var(--muted); max-width: 44ch; }
.notfound-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-top: 32px; }
.legal { max-width: 760px; }
.legal h2 { font-size: var(--step-2); margin-top: 32px; margin-bottom: 12px; letter-spacing: -0.03em; }
.legal h2:first-child { margin-top: 0; }
.legal p { font-size: var(--step-0); line-height: 1.7; color: var(--ink-2); max-width: 68ch; }
.legal-updated { margin-top: 32px; color: var(--muted); font-size: var(--step--1); }
.credit-list { display: flex; flex-direction: column; gap: 4px; margin-top: 16px; }
.credit-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  font-size: var(--step--1);
  color: var(--ink-2);
}
.credit-list li:nth-child(odd) { background: var(--card); }
.credit-list li span:last-child { color: var(--muted); }

/* ---------------------------------------------------------------- footer */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  margin-top: 16px;
  padding-top: clamp(48px, 5vw, 72px);
}
.footer-top { display: grid; grid-template-columns: minmax(240px, 1.6fr) repeat(3, minmax(140px, 0.8fr)); gap: 32px; padding-bottom: 48px; }
.site-footer .brand { color: var(--paper); }
.site-footer .brand-sub { color: rgba(247, 242, 232, 0.6); }
.footer-brand p { margin-top: 20px; font-size: var(--step--1); color: rgba(247, 242, 232, 0.68); max-width: 32ch; line-height: 1.65; }
.footer-heading { font-size: var(--step--2); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(247, 242, 232, 0.62); margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 4px; }
.footer-links a {
  display: inline-block;
  padding: 6px 0;
  font-size: var(--step--1);
  color: var(--paper);
  opacity: 0.86;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-links a:hover { opacity: 1; transform: translateX(3px); }
.footer-location { margin-top: 16px; font-size: var(--step--2); color: rgba(247, 242, 232, 0.6); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding-block: 24px;
  border-top: 1px solid rgba(247, 242, 232, 0.14);
}
.footer-bottom p { font-size: var(--step--2); color: rgba(247, 242, 232, 0.62); max-width: 52ch; line-height: 1.5; }

/* ---------------------------------------------------------------- reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 520ms var(--ease-out), transform 520ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal].is-instant { transition: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1140px) {
  .catalogue-grid { grid-template-columns: 1fr 1fr; }
  .cat-tile--lg { grid-column: span 2; min-height: 400px; }
  .cat-tile:nth-child(2) { margin-top: 0; }
  .cat-tile:nth-child(3) { margin-top: 40px; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .featured { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); }
  .capability-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .site-header { padding-block: 8px; }
  .header-inner { min-height: 56px; padding: 6px 6px 6px 16px; }
  .site-header .main-nav, .header-cta { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu:not([hidden]) { display: block; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding-top: 8px; }
  .hero-copy { padding-block: 16px 8px; }
  .hero-copy-inner { max-width: none; margin-left: 0; }
  .hero-media { min-height: 60vw; max-height: 520px; }
  .hero-foot { margin-top: 24px; }
  .section-head { grid-template-columns: 1fr; gap: 16px; }
  .section-aside p { max-width: 56ch; }
  .segments-grid { grid-template-columns: 1fr; }
  .segments-intro { min-width: 0; overflow: hidden; }
  .segments-intro { position: static; }
  .segments-intro h2 { max-width: none; }
  .segment-tabs { flex-direction: row; overflow-x: auto; gap: 8px; padding-bottom: 8px; margin-top: 24px; scrollbar-width: none; max-width: 100%; }
  .segment-tabs::-webkit-scrollbar { display: none; }
  .segment-tab { flex: 0 0 auto; width: auto; padding: 12px 16px; }
  .segment-arrow { display: none; }
  .featured { grid-template-columns: 1fr; }
  .featured-media { min-height: 280px; padding: 24px; }
  .featured-media img { max-height: 240px; }
  .featured-media::before { width: 240px; height: 240px; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .step:nth-child(2), .step:nth-child(3), .step:nth-child(4) { margin-top: 0; }
  .step:nth-child(even) { margin-top: 24px; }
  .home-company { grid-template-columns: 1fr; }
  .page-head-grid { grid-template-columns: 1fr; gap: 16px; }
  .page-head h1 { font-size: clamp(2.2rem, 7vw, 3.4rem); }
  .product-detail-grid { grid-template-columns: 1fr; }
  .product-info { position: static; }
  .feature-list { grid-template-columns: 1fr; gap: 12px; }
  .spec-layout { grid-template-columns: 1fr; }
  .solution-chapter-grid { grid-template-columns: 1fr; }
  .chapter-rail { position: static; }
  .chapter-rail h2 { max-width: none; }
  .chapter-copy { grid-template-columns: 1fr; gap: 24px; }
  .chapter-config { grid-template-columns: 1fr; }
  .worksheet-grid { grid-template-columns: 1fr; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-intro { position: static; }
  .company-intro-grid { grid-template-columns: 1fr; gap: 24px; }
  .docs-grid { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; gap: 24px; }
  .footer-top { gap: 24px; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 720px) {
  :root { scroll-padding-top: 80px; }
  .catalogue-grid { grid-template-columns: 1fr; }
  .cat-tile--lg { grid-column: auto; }
  .cat-tile, .cat-tile:nth-child(2), .cat-tile:nth-child(3) { margin-top: 0; min-height: 340px; }
  .product-grid { grid-template-columns: 1fr; }
  .capability-list { grid-template-columns: 1fr; gap: 12px; }
  .steps { grid-template-columns: 1fr; }
  .step:nth-child(even) { margin-top: 0; }
  .segment-figures { grid-template-columns: 1fr; gap: 8px; }
  .segment-figure { display: flex; justify-content: space-between; align-items: baseline; }
  .segment-figure p:first-child { margin-bottom: 0; }
  .figure-value { font-size: 1.375rem; }
  .catalogue-tools { position: static; border-radius: var(--r-lg); }
  .catalogue-search { flex: 1 1 100%; }
  .catalogue-note { flex-direction: column; align-items: flex-start; gap: 16px; padding: 24px; }
  .key-specs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-actions .btn { width: 100%; }
  .gallery-thumb { width: 68px; height: 68px; }
  .audience-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .sizer-fields { grid-template-columns: 1fr; }
  .sizer-actions { flex-direction: column; align-items: stretch; gap: 8px; }
  .sizer-actions .btn { width: 100%; }
  .scope-item { grid-template-columns: 1fr; gap: 16px; padding: 24px; }
  .credit-list li { grid-template-columns: 1fr; gap: 4px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
  .footer-brand { grid-column: span 2; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .cta-inner .btn { width: 100%; }
  .contact-form-wrap { padding: 20px; }
  .form-submit { flex-direction: column; align-items: stretch; }
  .form-submit .btn { width: 100%; }
  .hero h1 { font-size: clamp(2.4rem, 10vw, 3.2rem); }
  .hero-inset { left: 12px; right: 12px; bottom: 12px; }
  .notfound-actions { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 420px) {
  .hero-media { min-height: 78vw; }
  .hero-inset-media { width: 44px; height: 44px; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .key-specs { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .site-header, .site-footer, .cta-band, .hero-inset, .product-actions { display: none; }
  body { background: #fff; }
  [data-reveal] { opacity: 1; transform: none; }
  .hero, .product-detail-grid, .spec-layout { display: block; }
}