/* ===================================================================
   ClearTrace Research — Design System
   Premium B2B practitioner research supply. Navy / charcoal / teal.
   =================================================================== */

/* ---------- Type scale ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.2vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.1vw, 2.125rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.4vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1.4rem + 3.6vw, 4rem);

  /* ---------- Spacing ---------- */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* ---------- Radius (low / squared) ---------- */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* ---------- Content widths ---------- */
  --content-narrow: 680px;
  --content-default: 1080px;
  --content-wide: 1240px;

  /* ---------- Fonts ---------- */
  --font-display: "IBM Plex Sans", "Helvetica Neue", system-ui, sans-serif;
  --font-body: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  /* ---------- Brand palette ---------- */
  --navy: #07111F;
  --navy-2: #0B1A2E;
  --charcoal: #151A1F;
  --white: #F7FAFC;
  --teal: #19C7C9;
  --cyan: #8DEBF0;
  --green: #7EE0B8;
  --gray: #6B7280;
  --border-gray: #D8E2E7;
}

/* ---------- Light mode (default) ---------- */
:root,
[data-theme="light"] {
  --color-bg: #FFFFFF;
  --color-bg-tint: #F2F7FA;
  --color-surface: #F7FAFC;
  --color-surface-2: #EEF4F8;
  --color-ink: #07111F;          /* deep navy text */
  --color-text: #1B2733;
  --color-text-muted: #51606E;
  --color-text-faint: #8A98A5;
  --color-text-inverse: #F7FAFC;
  --color-border: #D8E2E7;
  --color-border-strong: #C2D2DB;
  --color-primary: #0E8E90;       /* teal, darkened for AA on white */
  --color-primary-strong: #0A6E70;
  --color-accent: #19C7C9;
  --color-on-dark-muted: #A7BACB;
  --shadow-sm: 0 1px 2px rgba(7, 17, 31, 0.06);
  --shadow-md: 0 6px 20px rgba(7, 17, 31, 0.08);
  --shadow-lg: 0 18px 48px rgba(7, 17, 31, 0.12);
  --header-bg: rgba(255, 255, 255, 0.82);
  --grid-line: rgba(7, 17, 31, 0.05);
}

/* ---------- Dark mode ---------- */
[data-theme="dark"] {
  --color-bg: #07111F;
  --color-bg-tint: #0A1626;
  --color-surface: #0D1B2C;
  --color-surface-2: #11243A;
  --color-ink: #F2F7FA;
  --color-text: #D6E2EC;
  --color-text-muted: #93A6B6;
  --color-text-faint: #647585;
  --color-text-inverse: #07111F;
  --color-border: #1E3147;
  --color-border-strong: #2A4660;
  --color-primary: #2FD4D6;
  --color-primary-strong: #19C7C9;
  --color-accent: #19C7C9;
  --color-on-dark-muted: #A7BACB;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.5);
  --header-bg: rgba(7, 17, 31, 0.8);
  --grid-line: rgba(141, 235, 240, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #07111F; --color-bg-tint: #0A1626; --color-surface: #0D1B2C;
    --color-surface-2: #11243A; --color-ink: #F2F7FA; --color-text: #D6E2EC;
    --color-text-muted: #93A6B6; --color-text-faint: #647585; --color-text-inverse: #07111F;
    --color-border: #1E3147; --color-border-strong: #2A4660; --color-primary: #2FD4D6;
    --color-primary-strong: #19C7C9; --color-accent: #19C7C9; --color-on-dark-muted: #A7BACB;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3); --shadow-md: 0 6px 20px rgba(0,0,0,0.4);
    --shadow-lg: 0 18px 48px rgba(0,0,0,0.5); --header-bg: rgba(7,17,31,0.8);
    --grid-line: rgba(141,235,240,0.05);
  }
}

/* ===================================================================
   Base
   =================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img, picture, svg, video { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  line-height: 1.12;
  letter-spacing: -0.01em;
  text-wrap: balance;
  font-weight: 600;
}
p { text-wrap: pretty; }

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

::selection { background: rgba(25, 199, 201, 0.25); color: var(--color-ink); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button { cursor: pointer; background: none; border: none; }

a, button, input, textarea, select, [role="button"] {
  transition: color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive),
    opacity var(--transition-interactive);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.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;
}

/* ===================================================================
   Layout primitives
   =================================================================== */
.wrap { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 3rem); }
.wrap-narrow { max-width: var(--content-narrow); }
.wrap-default { max-width: var(--content-default); }

.section { padding-block: clamp(var(--space-16), 8vw, var(--space-32)); }
.section-sm { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary-strong);
  font-weight: 500;
}
.eyebrow::before {
  content: ""; width: 18px; height: 1px; background: var(--color-primary); display: inline-block;
}
[data-theme="dark"] .eyebrow { color: var(--color-primary); }

.section-title { font-size: var(--text-xl); margin-top: var(--space-4); max-width: 22ch; }
.section-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-top: var(--space-5);
  max-width: 60ch;
  line-height: 1.55;
}

/* ===================================================================
   Buttons
   =================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 500;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  min-height: 44px;
  white-space: normal;
  text-align: center;
  line-height: 1.2;
}
.btn svg { width: 16px; height: 16px; flex: 0 0 16px; }
.btn-primary {
  background: var(--color-primary-strong);
  color: #fff;
  border-color: var(--color-primary-strong);
}
.btn-primary:hover { background: #08585a; box-shadow: var(--shadow-md); transform: translateY(-1px); }
[data-theme="dark"] .btn-primary { background: var(--color-primary); color: #04171c; border-color: var(--color-primary); }
[data-theme="dark"] .btn-primary:hover { background: #5fe0e2; }

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary-strong); }
[data-theme="dark"] .btn-ghost:hover { color: var(--color-primary); }

.btn-on-dark { color: #F2F7FA; border-color: rgba(167, 186, 203, 0.4); }
.btn-on-dark:hover { border-color: var(--teal); color: var(--cyan); }

.btn-lg { padding: 1rem 1.75rem; font-size: var(--text-base); }
.btn-link { color: var(--color-primary-strong); font-weight: 500; font-size: var(--text-sm); display: inline-flex; align-items: center; gap: 6px; min-height: 44px; }
[data-theme="dark"] .btn-link { color: var(--color-primary); }
.btn-link svg { width: 15px; height: 15px; flex: 0 0 15px; transition: transform var(--transition-interactive); }
.btn-link:hover svg { transform: translateX(3px); }

/* ===================================================================
   Header / Nav
   =================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-interactive), transform 0.3s cubic-bezier(0.16,1,0.3,1);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: var(--space-6); }

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--color-ink); flex-shrink: 0; min-height: 44px; }
.brand svg { width: 30px; height: 30px; flex: 0 0 30px; color: var(--color-primary-strong); }
[data-theme="dark"] .brand svg { color: var(--color-primary); }
.brand-text { font-family: var(--font-display); font-weight: 600; font-size: 1.0625rem; letter-spacing: -0.01em; line-height: 1; }
.brand-text small { display: block; font-family: var(--font-mono); font-weight: 400; font-size: 0.6rem; letter-spacing: 0.18em; color: var(--color-text-muted); text-transform: uppercase; margin-top: 3px; }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-cta-mobile { display: none; }
.nav-links a {
  font-size: var(--text-sm); color: var(--color-text-muted); font-weight: 450;
  padding: 0.5rem 0.55rem; border-radius: var(--radius-xs); white-space: nowrap;
}
.nav-links a:hover { color: var(--color-ink); }
.nav-links a.active { color: var(--color-primary-strong); }
[data-theme="dark"] .nav-links a.active { color: var(--color-primary); }

.nav-actions { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.theme-toggle {
  width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm); color: var(--color-text-muted);
}
.theme-toggle:hover { color: var(--color-ink); border-color: var(--color-border-strong); }

.nav-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; border: 1px solid var(--color-border); border-radius: var(--radius-sm); color: var(--color-ink); }

@media (max-width: 1120px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta-desktop { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 72px; left: 0; right: 0;
    background: var(--color-bg); border-bottom: 1px solid var(--color-border);
    padding: var(--space-4); gap: var(--space-1); box-shadow: var(--shadow-lg);
    max-height: calc(100dvh - 72px);
    overflow-y: auto;
  }
  .nav-links.open a { min-height: 44px; padding: 0.75rem; font-size: var(--text-base); border-radius: var(--radius-sm); display: flex; align-items: center; }
  .nav-links.open a:hover { background: var(--color-surface); }
  .nav-links.open .btn { margin-top: var(--space-2); }
  .nav-cta-mobile { display: inline-flex; }
}

@media (max-width: 420px) {
  .nav { height: 72px; gap: var(--space-3); }
  .brand { gap: 8px; min-width: 0; }
  .brand svg { width: 28px; height: 28px; flex-basis: 28px; }
  .brand-text { font-size: 1rem; }
  .brand-text small { font-size: 0.56rem; letter-spacing: 0.13em; }
  .nav-actions { gap: var(--space-2); }
  .theme-toggle, .nav-toggle { width: 40px; height: 40px; flex: 0 0 40px; }
}

/* ===================================================================
   Hero
   =================================================================== */
.hero { position: relative; background: var(--navy); color: var(--white); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.9; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(7,17,31,0.97) 0%, rgba(7,17,31,0.86) 42%, rgba(7,17,31,0.5) 100%);
}
.hero-inner { position: relative; z-index: 1; padding-block: clamp(var(--space-20), 12vw, 9rem); }
.hero-content { max-width: 720px; }
.hero h1 {
  color: var(--white);
  font-size: var(--text-3xl);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-top: var(--space-6);
  line-height: 1.05;
}
.hero .eyebrow { color: var(--cyan); }
.hero .eyebrow::before { background: var(--teal); }
.hero-sub { font-size: var(--text-lg); color: #C2D2DB; margin-top: var(--space-6); max-width: 58ch; line-height: 1.55; }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-10); }

@media (max-width: 520px) {
  .hero-inner { padding-block: clamp(var(--space-16), 18vw, var(--space-20)); }
  .hero-cta { gap: var(--space-3); }
  .hero-cta .btn { width: 100%; }
}

/* Trust bar */
.trust-bar { position: relative; z-index: 1; border-top: 1px solid rgba(167,186,203,0.16); background: rgba(4,12,22,0.5); }
.trust-items { display: flex; flex-wrap: wrap; gap: var(--space-6) var(--space-10); padding-block: var(--space-6); }
.trust-item { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); color: #B7C7D4; min-height: 28px; }
.trust-item svg { width: 17px; height: 17px; color: var(--green); flex-shrink: 0; }

@media (max-width: 520px) {
  .trust-items { gap: var(--space-3); }
  .trust-item { width: 100%; }
}

/* ===================================================================
   Cards & grids
   =================================================================== */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
.card-hover:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card .card-icon {
  width: 42px; height: 42px; border-radius: var(--radius-sm);
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-primary-strong); margin-bottom: var(--space-4);
}
[data-theme="dark"] .card .card-icon { color: var(--color-primary); }
.card .card-icon svg { width: 21px; height: 21px; }
.card h3 { font-size: var(--text-lg); font-weight: 600; }
.card p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-3); line-height: 1.6; }

/* ===================================================================
   Two-column split
   =================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-20)); align-items: center; }
.split.reverse .split-media { order: -1; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } .split.reverse .split-media { order: 0; } }
.split-media img { border-radius: var(--radius-md); border: 1px solid var(--color-border); width: 100%; }
.contact-layout { align-items: start; grid-template-columns: minmax(0, 1.5fr) minmax(280px, 1fr); }
@media (max-width: 880px) { .contact-layout { grid-template-columns: minmax(0, 1fr); } }

/* ===================================================================
   Steps
   =================================================================== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); counter-reset: step; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding-top: var(--space-8); border-top: 2px solid var(--color-border); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  position: absolute; top: -0.9rem; left: 0;
  font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 600;
  color: var(--color-primary-strong); background: var(--color-bg); padding-right: var(--space-3);
}
[data-theme="dark"] .step::before { color: var(--color-primary); }
.step h3 { font-size: var(--text-lg); }
.step p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-3); }

/* ===================================================================
   Category list
   =================================================================== */
.cat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-5); }
@media (max-width:900px){.cat-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:620px){.cat-grid{grid-template-columns:1fr;}}
.cat {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-6); position: relative;
}
.cat-hover:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-sm); }
.cat .cat-no { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); letter-spacing: 0.1em; }
.cat h3 { font-size: var(--text-lg); margin-top: var(--space-3); }
.cat p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-3); line-height: 1.55; }
.cat .cat-note { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--color-border); }

/* ===================================================================
   Documentation / checklist
   =================================================================== */
.check-list { display: grid; gap: var(--space-3); }
.check-list li { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-base); color: var(--color-text); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.check-list li:last-child { border-bottom: 0; }
.check-list svg { width: 20px; height: 20px; color: var(--color-primary-strong); flex-shrink: 0; margin-top: 2px; }
[data-theme="dark"] .check-list svg { color: var(--green); }

/* ===================================================================
   Audience tags
   =================================================================== */
.tag-grid { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.audience-tag {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 0.65rem 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); font-size: var(--text-sm); color: var(--color-text);
  min-height: 44px;
  line-height: 1.3;
}
.audience-tag svg { width: 16px; height: 16px; flex: 0 0 16px; color: var(--color-primary-strong); }
[data-theme="dark"] .audience-tag svg { color: var(--color-primary); }

@media (max-width: 520px) {
  .tag-grid { align-items: stretch; }
  .audience-tag { width: 100%; }
}

/* ===================================================================
   Dashboard mockup
   =================================================================== */
.mock-wrap {
  background: var(--navy); border-radius: var(--radius-lg); padding: clamp(var(--space-5), 3vw, var(--space-10));
  border: 1px solid var(--navy-2); position: relative; overflow: hidden;
}
.mock-wrap::before {
  content:""; position:absolute; inset:0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px; opacity: 0.5;
}
.mock-grid { position: relative; display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-4); }
@media (max-width: 760px){ .mock-grid { grid-template-columns: 1fr; } }
.mock-card { background: #0C1A2C; border: 1px solid #19314C; border-radius: var(--radius-md); padding: var(--space-5); color: #D6E2EC; }
.mock-card .mc-head { display:flex; align-items:center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-4); }
.mock-card .mc-title { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; color: var(--white); }
.mock-card .mc-badge { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing:0.08em; text-transform: uppercase; color: var(--green); border:1px solid rgba(126,224,184,0.3); border-radius: var(--radius-xs); padding: 3px 7px; }
.mock-row { display:flex; align-items:center; justify-content: space-between; gap: var(--space-3); padding: 0.6rem 0; border-bottom: 1px solid #15293f; font-size: var(--text-sm); }
.mock-row:last-child { border-bottom: 0; }
.mock-row .mr-label { color: #A7BACB; }
.mock-row .mr-val { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--cyan); }
.mock-bar { height: 7px; border-radius: 4px; background:#15293f; overflow: hidden; margin-top: 6px; }
.mock-bar i { display:block; height:100%; background: linear-gradient(90deg, var(--teal), var(--green)); border-radius:4px; }
.mock-pill { display:inline-flex; align-items:center; gap:6px; font-size:var(--text-xs); color:#A7BACB; }
.mock-pill .dot { width:7px;height:7px;border-radius:50%; background: var(--green); }
.mock-stat { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; color: var(--white); }
.mock-stat small { display:block; font-family: var(--font-body); font-size: var(--text-xs); color:#A7BACB; font-weight:400; margin-top:4px; }

@media (max-width: 520px) {
  .mock-wrap { border-radius: var(--radius-md); }
  .mock-card { padding: var(--space-4); }
  .mock-card .mc-head, .mock-row { align-items: flex-start; }
  .mock-row .mr-label { min-width: 0; }
  .mock-row .mr-val { flex: 0 0 auto; }
}

/* ===================================================================
   Compliance / statement band
   =================================================================== */
.band-dark { background: var(--navy); color: var(--white); }
.band-dark h2 { color: var(--white); }
.band-dark .section-lead { color: #B7C7D4; }
.band-tint { background: var(--color-bg-tint); }

.statement {
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-surface); padding: clamp(var(--space-6), 4vw, var(--space-12));
}

/* ===================================================================
   CTA band
   =================================================================== */
.cta-band { background: linear-gradient(180deg, var(--navy) 0%, #0A1A2E 100%); color: var(--white); border-radius: var(--radius-lg); padding: clamp(var(--space-10), 6vw, var(--space-24)); text-align: center; position: relative; overflow: hidden; }
.cta-band::after { content:""; position:absolute; left:50%; top:-40%; width:60%; height:120%; transform: translateX(-50%); background: radial-gradient(ellipse at center, rgba(25,199,201,0.16), transparent 70%); }
.cta-band > * { position: relative; }
.cta-band h2 { color: var(--white); font-size: var(--text-2xl); max-width: 20ch; margin-inline: auto; }
.cta-band p { color: #B7C7D4; margin-top: var(--space-5); max-width: 52ch; margin-inline: auto; }
.cta-band .hero-cta { justify-content: center; }

/* ===================================================================
   Footer
   =================================================================== */
.site-footer { background: var(--navy); color: #B7C7D4; border-top: 1px solid var(--navy-2); }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--space-8); padding-block: var(--space-16) var(--space-12); }
@media (max-width: 860px){ .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px){ .footer-top { grid-template-columns: 1fr; } }
.footer-brand .brand { color: var(--white); }
.footer-brand .brand svg { color: var(--teal); }
.footer-brand p { font-size: var(--text-sm); color: #93A6B6; margin-top: var(--space-4); max-width: 38ch; }
.footer-col h4 { color: var(--white); font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-4); }
.footer-col a { display: flex; align-items: center; min-height: 40px; font-size: var(--text-sm); color: #93A6B6; padding: 0.3rem 0; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { border-top: 1px solid var(--navy-2); padding-block: var(--space-8); }
.footer-disclaimer { font-size: var(--text-xs); color: #6E8093; line-height: 1.7; max-width: 100%; }
.footer-meta { display:flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between; align-items:center; margin-top: var(--space-6); }
.footer-meta small { font-size: var(--text-xs); color: #6E8093; }
.footer-meta .footer-keywords { font-size: var(--text-xs); color: #4F6173; }

/* ===================================================================
   Page header (interior)
   =================================================================== */
.page-head { background: var(--navy); color: var(--white); position: relative; overflow: hidden; }
.page-head::after { content:""; position:absolute; right:-10%; top:-30%; width:50%; height:160%; background: radial-gradient(ellipse at center, rgba(25,199,201,0.12), transparent 70%); }
.page-head-inner { position: relative; padding-block: clamp(var(--space-16), 9vw, 6rem); }
.page-head h1 { color: var(--white); font-size: var(--text-2xl); margin-top: var(--space-5); max-width: 20ch; }
.page-head p { color: #B7C7D4; font-size: var(--text-lg); margin-top: var(--space-5); max-width: 58ch; line-height: 1.55; }
.page-head .eyebrow { color: var(--cyan); }
.page-head .eyebrow::before { background: var(--teal); }
.breadcrumb { font-size: var(--text-xs); color: #6E8093; font-family: var(--font-mono); letter-spacing: 0.04em; }
.breadcrumb a { display: inline-flex; align-items: center; min-height: 36px; }
.breadcrumb a:hover { color: var(--cyan); }

/* ===================================================================
   Forms
   =================================================================== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
@media (max-width: 640px){ .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field.full { grid-column: 1 / -1; }
.field label { font-size: var(--text-sm); font-weight: 500; color: var(--color-text); line-height: 1.35; }
.field label .req { color: var(--color-primary-strong); }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.75rem 0.9rem; font-size: var(--text-sm);
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  color: var(--color-text);
}
.field input::placeholder, .field textarea::placeholder { color: var(--color-text-faint); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--color-primary); outline: none; box-shadow: 0 0 0 3px rgba(25,199,201,0.15); }
.field textarea { resize: vertical; min-height: 120px; }
.radio-row { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.radio-opt {
  display: inline-flex; align-items: center; gap: var(--space-2);
  min-height: 40px; padding: 0.45rem 0.7rem;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: var(--text-sm); color: var(--color-text); cursor: pointer;
}
.radio-opt input { width: 1rem; height: 1rem; flex: 0 0 1rem; accent-color: var(--color-primary-strong); }
.form-note { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-2); }
.form-success { display:none; padding: var(--space-6); border:1px solid var(--green); border-radius: var(--radius-md); background: rgba(126,224,184,0.08); color: var(--color-text); }
.form-success.show { display: block; }

/* ===================================================================
   Misc
   =================================================================== */
.lead-block { max-width: 56ch; }
.muted { color: var(--color-text-muted); }
.divider { height: 1px; background: var(--color-border); border: 0; margin-block: var(--space-12); }

.feature-line { display:flex; gap: var(--space-3); align-items:flex-start; padding: var(--space-3) 0; }
.feature-line svg { width: 18px; height: 18px; color: var(--color-primary-strong); flex-shrink: 0; margin-top: 3px; }
[data-theme="dark"] .feature-line svg { color: var(--green); }
.feature-line span { font-size: var(--text-sm); color: var(--color-text); }

@media (max-width: 520px) {
  .wrap { padding-inline: 1.25rem; }
  .section { padding-block: var(--space-16); }
  .section-sm { padding-block: var(--space-12); }
  .card, .cat { padding: var(--space-5); }
  .page-head-inner { padding-block: var(--space-16); }
  .field input, .field select, .field textarea { min-height: 44px; }
  .radio-row { align-items: stretch; }
  .radio-opt { flex: 1 1 100px; }
}

/* reveal animation */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){ .reveal { opacity:1; transform:none; } }

.section-head { max-width: 60ch; margin-bottom: var(--space-12); }