/* Self-hosted variable fonts (both SIL OFL). Served same-origin so first paint
   doesn't wait on a DNS + TLS + CSS round trip to fonts.googleapis.com. */
@font-face {
  font-family: 'Bricolage Grotesque';
  font-style: normal;
  font-weight: 400 800;
  font-stretch: 100%;
  font-display: swap;
  src: url(../assets/fonts/bricolage-grotesque-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: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(../assets/fonts/manrope-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;
}

/* ---------- Design tokens / theme system ---------- */

:root {
  --font-display: "Bricolage Grotesque", "Manrope", sans-serif;
  --font-body: "Manrope", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-theme: background-color .5s var(--ease), color .5s var(--ease), border-color .5s var(--ease);

  --shadow-elevated: 0 40px 80px -30px rgba(0,0,0,0.6);
  --shadow-card: 0 30px 60px -30px rgba(0,0,0,0.55);
  --shadow-float: 0 12px 30px -12px rgba(0,0,0,0.5);
}

/* Daylight — clean, professional light theme (default) */
:root[data-theme="daylight"] {
  --bg: #f7f8fb;
  --bg-alt: #eef1f6;
  --surface: rgba(16, 24, 47, 0.04);
  --surface-strong: rgba(16, 24, 47, 0.07);
  --border: rgba(16, 24, 47, 0.12);
  --text: #10182f;
  --text-dim: #565f7a;
  --accent: #3454d1;
  --accent-2: #0f9d8c;
  --accent-contrast: #ffffff;
  --gradient: linear-gradient(135deg, #3454d1 0%, #0f9d8c 100%);

  --shadow-elevated: 0 30px 60px -28px rgba(16,24,47,0.18);
  --shadow-card: 0 24px 48px -26px rgba(16,24,47,0.16);
  --shadow-float: 0 10px 26px -10px rgba(16,24,47,0.14);
}

/* Nebula — deep space violet/cyan, cinematic default */
:root[data-theme="nebula"] {
  --bg: #05060a;
  --bg-alt: #0a0c14;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f3f4fa;
  --text-dim: #9aa0b4;
  --accent: #8b6bff;
  --accent-2: #29e0e8;
  --accent-contrast: #05060a;
  --gradient: linear-gradient(135deg, #8b6bff 0%, #29e0e8 100%);
}

/* Monochrome — Apple-inspired restraint */
:root[data-theme="monochrome"] {
  --bg: #000000;
  --bg-alt: #0a0a0a;
  --surface: rgba(255, 255, 255, 0.055);
  --surface-strong: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.14);
  --text: #f5f5f7;
  --text-dim: #8a8a8e;
  --accent: #ffffff;
  --accent-2: #0a84ff;
  --accent-contrast: #000000;
  --gradient: linear-gradient(135deg, #ffffff 0%, #9d9da3 100%);
}

/* Clinical Blue — Meta-adjacent, professional, healthcare-appropriate */
:root[data-theme="clinical"] {
  --bg: #060a16;
  --bg-alt: #0a1120;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.075);
  --border: rgba(140, 175, 255, 0.16);
  --text: #eaf1fc;
  --text-dim: #8ea1c4;
  --accent: #3b6bff;
  --accent-2: #36d0ff;
  --accent-contrast: #060a16;
  --gradient: linear-gradient(135deg, #3b6bff 0%, #36d0ff 100%);
}

/* Aurora — bioluminescent medtech teal */
:root[data-theme="aurora"] {
  --bg: #03110d;
  --bg-alt: #071b15;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.075);
  --border: rgba(120, 255, 205, 0.16);
  --text: #e9fff5;
  --text-dim: #7fb8a2;
  --accent: #00e6a2;
  --accent-2: #7cf7c9;
  --accent-contrast: #03110d;
  --gradient: linear-gradient(135deg, #00e6a2 0%, #7cf7c9 100%);
}

/* ---------- Reset ---------- */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@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; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: var(--transition-theme);
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.02em;
}

p { margin: 0; color: var(--text-dim); }

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

img, svg { display: block; max-width: 100%; }

.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 10px 16px;
  border-radius: 8px;
  z-index: 999;
}
.skip-link:focus { left: 16px; top: 16px; }

.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient);
  color: var(--accent-contrast);
  box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--accent) 60%, transparent);
}
.btn-primary:hover { box-shadow: 0 12px 32px -8px color-mix(in srgb, var(--accent) 70%, transparent); }

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover { background: var(--surface-strong); }

.btn-small { padding: 9px 18px; font-size: 0.85rem; }
.btn-large { padding: 16px 32px; font-size: 1.05rem; }

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background .35s var(--ease), border-color .35s var(--ease), padding .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
  padding: 12px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}
.brand-mark { color: var(--accent); flex-shrink: 0; }

.main-nav {
  display: flex;
  gap: 32px;
}
.main-nav a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-dim);
  transition: color .2s var(--ease);
  position: relative;
}
.main-nav a:hover { color: var(--text); }

.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-switcher {
  display: flex;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}
.swatch {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.swatch:hover { transform: scale(1.15); }
.swatch[aria-pressed="true"] { border-color: var(--text); }
.swatch[data-theme-btn="daylight"] { background: linear-gradient(135deg, #3454d1, #0f9d8c); }
.swatch[data-theme-btn="nebula"] { background: linear-gradient(135deg, #8b6bff, #29e0e8); }
.swatch[data-theme-btn="monochrome"] { background: linear-gradient(135deg, #ffffff, #6b6b6f); }
.swatch[data-theme-btn="clinical"] { background: linear-gradient(135deg, #3b6bff, #36d0ff); }
.swatch[data-theme-btn="aurora"] { background: linear-gradient(135deg, #00e6a2, #7cf7c9); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 168px 0 0;
  overflow: hidden;
  isolation: isolate;
}

.net-canvas {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0.55;
}

.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  translate: -50% 0;
  width: 1100px;
  height: 700px;
  background: var(--gradient);
  filter: blur(140px);
  opacity: 0.16;
  z-index: -1;
  border-radius: 50%;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding-bottom: 100px;
}

.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  margin-bottom: 18px;
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  margin-bottom: 22px;
}

.grad-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 1.1rem;
  max-width: 46ch;
  margin-bottom: 34px;
}
.hero-sub strong { color: var(--text); }

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Phone mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mock {
  width: 300px;
  border-radius: 42px;
  background: linear-gradient(160deg, var(--surface-strong), var(--surface));
  border: 1px solid var(--border);
  padding: 14px;
  box-shadow: var(--shadow-elevated), inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter: blur(20px);
  animation: float 7s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.phone-notch {
  width: 80px;
  height: 8px;
  border-radius: 6px;
  background: var(--bg);
  margin: 0 auto 14px;
}

.phone-screen {
  background: var(--bg-alt);
  border-radius: 28px;
  padding: 22px 18px 26px;
  border: 1px solid var(--border);
}

.app-topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}
.app-topbar .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2);
  flex-shrink: 0;
}
.app-progress {
  flex: 1;
  height: 4px;
  background: var(--surface-strong);
  border-radius: 4px;
  overflow: hidden;
}
.app-progress-fill {
  width: 62%;
  height: 100%;
  background: var(--gradient);
}

.app-kicker {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  margin-bottom: 10px;
}

.app-question {
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 18px;
  line-height: 1.4;
}

.app-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.app-option.is-correct {
  border-color: var(--accent-2);
  color: var(--text);
  background: color-mix(in srgb, var(--accent-2) 12%, var(--surface));
}
.opt-letter {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--surface-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  font-weight: 700;
  flex-shrink: 0;
}
.is-correct .opt-letter { background: var(--gradient); color: var(--accent-contrast); }

.app-stats {
  display: flex;
  gap: 24px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.app-stats > div { display: flex; flex-direction: column; }
.stat-num { font-family: var(--font-display); font-weight: 700; color: var(--text); font-size: 1.05rem; }
.stat-label { font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.04em; }

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
  box-shadow: var(--shadow-float);
  animation: float 8s ease-in-out infinite;
}
.float-card--top { top: 8%; right: -6%; animation-delay: -2s; }
.float-card--bottom { bottom: 10%; left: -8%; animation-delay: -4s; }
.float-card strong { color: var(--accent-2); }

.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-2) 60%, transparent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-2) 50%, transparent); }
  70% { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* Marquee */
.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  padding: 18px 0;
  background: var(--surface);
}
.marquee-track {
  display: flex;
  gap: 60px;
  width: max-content;
  animation: scroll-marquee 32s linear infinite;
}
.marquee-track span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  white-space: nowrap;
}
@keyframes scroll-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Sections ---------- */

.section { padding: 120px 0; }
.section-alt { background: var(--bg-alt); }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 16px; }
.section-lede { font-size: 1.05rem; margin-top: 16px; }

.exam-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 14px;
}

.exam-stat {
  padding: 26px 22px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  text-align: center;
}

.stat-big {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}

.stat-caption {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.stats-source {
  font-size: 0.78rem;
  text-align: center;
  margin-bottom: 48px;
}
.stats-source a {
  color: var(--text-dim);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.stats-source a:hover { color: var(--text); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.feature-card {
  padding: 28px 24px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  background: var(--surface-strong);
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient);
  color: var(--accent-contrast);
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: 10px; color: var(--text); }
.feature-card p { font-size: 0.92rem; }

/* Screenshot carousel */
.carousel {
  max-width: 300px;
  margin: 0 auto;
}

.carousel-stage {
  display: flex;
  align-items: center;
  gap: 14px;
}

.carousel-viewport {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  position: relative;
  transition: height .4s var(--ease);
}

.carousel-track {
  display: flex;
  transition: transform .5s var(--ease);
}

.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  box-sizing: border-box;
  padding: 4px;
}

.shot-frame {
  border-radius: 32px;
  background: linear-gradient(160deg, var(--surface-strong), var(--surface));
  border: 1px solid var(--border);
  padding: 10px;
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter: blur(20px);
}
.shot-notch {
  width: 64px;
  height: 7px;
  border-radius: 5px;
  background: var(--bg);
  margin: 0 auto 10px;
}
.shot-frame picture { display: block; }
.shot-frame img {
  width: 100%;
  display: block;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.carousel-arrow {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .25s var(--ease), transform .25s var(--ease), border-color .25s var(--ease);
}
.carousel-arrow:hover { background: var(--surface-strong); border-color: var(--accent); transform: scale(1.08); }
.carousel-arrow:active { transform: scale(0.96); }

.carousel-caption {
  text-align: center;
  margin-top: 20px;
  min-height: 64px;
}
.carousel-caption h3 { font-size: 1rem; color: var(--text); margin-bottom: 6px; }
.carousel-caption p { font-size: 0.86rem; max-width: 320px; margin: 0 auto; }

.carousel-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
}
.carousel-dots button {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: var(--border);
  cursor: pointer;
  transition: background .25s var(--ease), width .25s var(--ease);
}
.carousel-dots button[aria-current="true"] {
  width: 24px;
  background: var(--gradient);
}
.carousel-dots button:hover { background: var(--accent); }

/* Comparison table */
.compare-wrap {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
  margin-bottom: 40px;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
}
.compare-table th, .compare-table td {
  padding: 18px 20px;
  text-align: left;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.compare-table tr:last-child th,
.compare-table tr:last-child td { border-bottom: none; }
.compare-table thead th {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  font-weight: 700;
  background: var(--surface-strong);
}
.compare-table th[scope="row"] {
  color: var(--text);
  font-weight: 700;
  width: 26%;
}
.compare-col-us {
  color: var(--text);
  font-weight: 600;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}
.compare-col-us::before {
  content: "\2713";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gradient);
  color: var(--accent-contrast);
  font-size: 0.7rem;
  margin-right: 8px;
  flex-shrink: 0;
}
.compare-table td.compare-col-them { color: var(--text-dim); }

.compare-caption {
  font-size: 0.78rem;
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.product-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
}
.product-cta p { color: var(--text); margin-top: 8px; font-weight: 500; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--gradient);
  color: var(--accent-contrast);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.badge-ghost {
  background: var(--surface-strong);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.pillar-index {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-2);
  margin-bottom: 14px;
}
.pillar h3 { font-size: 1.2rem; margin-bottom: 12px; color: var(--text); }
.pillar p { font-size: 0.95rem; }

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.roadmap-card {
  padding: 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  opacity: 0.6;
  transition: opacity .3s var(--ease);
}
.roadmap-card.is-active { opacity: 1; border-color: var(--accent); }
.roadmap-card h3 { margin: 14px 0 8px; font-size: 1.1rem; color: var(--text); }
.roadmap-card p { font-size: 0.88rem; }

.cta-section { text-align: center; }
.cta-wrap h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin-bottom: 16px; }
.cta-wrap p { font-size: 1.05rem; margin-bottom: 32px; }

/* ---------- Reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.brand-footer { font-size: 0.95rem; }
.footer-nav { display: flex; gap: 24px; }
.footer-nav a { font-size: 0.85rem; color: var(--text-dim); }
.footer-nav a:hover { color: var(--text); }
.footer-copy { font-size: 0.8rem; color: var(--text-dim); }

/* ---------- Responsive ---------- */

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; margin-bottom: 20px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .exam-stats-grid { grid-template-columns: 1fr; }
  .pillar-grid { grid-template-columns: 1fr; gap: 40px; }
  .roadmap-grid { grid-template-columns: 1fr; }
  .compare-table { font-size: 0.82rem; }
  .compare-table th, .compare-table td { padding: 14px 12px; }
}

@media (max-width: 760px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid var(--border); }
  .main-nav a:last-child { border-bottom: none; }
  .nav-toggle { display: flex; }
  .header-tools .btn { display: none; }
  .hero { padding-top: 140px; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .float-card { display: none; }
  .carousel { max-width: 100%; }
  .carousel-arrow { width: 36px; height: 36px; font-size: 1.1rem; }
  .compare-table { min-width: 640px; }
  .compare-table th[scope="row"] { width: auto; white-space: nowrap; }
}

@media (max-width: 480px) {
  .theme-switcher { display: none; }
}