/* ─── TOKENS (mirrors the newer site shell) ────────────────── */
:root {
  --ink:           #0A1628;
  --ink-dim:       #5B6A82;
  --surface:       #FFFFFF;
  --panel:         #F2F6FB;
  --panel-mid:     #E8EEF5;

  --dark:          #0D1B2E;
  --navy:          #1A3A5C;
  --blue:          #2563AE;
  --sky:           #5BA8D9;

  --accent:        #2563EB;
  --accent-dark:   #1D4ED8;
  --accent-glow:   rgba(37, 99, 235, .28);
  --accent-glow-2: rgba(37, 99, 235, .12);
  --accent-halo:   rgba(37, 99, 235, .40);
  --accent-tint:   rgba(37, 99, 235, .07);
  --accent-border: rgba(37, 99, 235, .18);
  --on-accent:     #FFFFFF;

  --ai-bg:         rgba(37, 99, 235, .05);
  --ai-mid:        rgba(37, 99, 235, .18);
  --human-bg:      #F8FAFC;
  --human-mid:     rgba(10, 22, 40, .08);

  --border-l:      #E2E8F0;

  --nav-bg:        rgba(255, 255, 255, .94);
  --nav-cta-bg:    #E8EEF5;
  --nav-cta-bg-h:  #D5DFEC;
  --nav-cta-text:  #0A1628;

  --success-bg:    rgba(34, 197, 94, .08);
  --success-bd:    rgba(34, 197, 94, .22);
  --success-ink:   #15803D;

  --shadow-soft:   0 6px 28px rgba(13, 27, 46, .12);
  --shadow-hover:  0 12px 40px rgba(13, 27, 46, .18);

  --radius:        12px;
  --radius-lg:     18px;
  --nav-h:         56px;

  --ease-out-expo: cubic-bezier(.16, 1, .3, 1);
  --ease-spring:   cubic-bezier(.34, 1.56, .64, 1);
  --ease-gentle:   cubic-bezier(.25, .46, .45, .94);
}

[data-theme="dark"] {
  --ink:           #E6EDF7;
  --ink-dim:       #8DA0BD;
  --surface:       #0A1321;
  --panel:         #111E37;
  --panel-mid:     #172340;

  --dark:          #050B17;
  --navy:          #2563EB;
  --blue:          #60A5FA;
  --sky:           #60A5FA;

  --accent:        #2563EB;
  --accent-dark:   #1D4ED8;
  --accent-glow:   rgba(37, 99, 235, .30);
  --accent-glow-2: rgba(37, 99, 235, .14);
  --accent-halo:   rgba(37, 99, 235, .45);
  --accent-tint:   rgba(37, 99, 235, .10);
  --accent-border: rgba(37, 99, 235, .28);

  --ai-bg:         rgba(37, 99, 235, .10);
  --ai-mid:        rgba(37, 99, 235, .28);
  --human-bg:      #0F1A30;
  --human-mid:     rgba(255, 255, 255, .08);

  --border-l:      #1B2742;

  --nav-bg:        rgba(10, 19, 33, .85);
  --nav-cta-bg:    #172340;
  --nav-cta-bg-h:  #223152;
  --nav-cta-text:  #E6EDF7;

  --success-bg:    rgba(34, 197, 94, .10);
  --success-bd:    rgba(34, 197, 94, .24);
  --success-ink:   #4ADE80;

  --shadow-soft:   0 6px 28px rgba(0, 0, 0, .55);
  --shadow-hover:  0 12px 40px rgba(37, 99, 235, .15);
}

/* ─── RESET ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans', sans-serif;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color .4s ease, color .4s ease;
}
a { text-decoration: none; color: inherit; }
img, video { display: block; width: 100%; }
ul { list-style: none; }

/* ─── NAV ────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-l);
  transition: box-shadow .3s var(--ease-out-expo),
              background-color .4s ease,
              border-color .4s ease;
}
nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.07); }

.nav-left { display: flex; align-items: center; gap: 20px; }
.nav-logo {
  font-family: 'Noto Sans', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -.3px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: opacity .2s, color .4s ease;
}
.nav-logo:hover { opacity: .85; }
.nav-logo-mark { flex-shrink: 0; overflow: visible; }
.nav-logo-mark .logo-outer {
  stroke: currentColor;
  stroke-width: 2;
  stroke-linejoin: round;
  fill: none;
  transition: stroke .4s ease;
}
.nav-logo-mark .logo-inner {
  fill: var(--accent);
  transform-origin: center;
  transform-box: fill-box;
  transition: fill .4s ease, transform .3s var(--ease-spring);
}
.nav-logo:hover .logo-inner { transform: scale(1.25); }

.nav-status {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--ink-dim);
  transition: color .4s ease;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #22C55E;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 14px; color: var(--ink-dim); transition: color .2s; }
.nav-links a:not(.nav-cta) { position: relative; padding-bottom: 2px; }
.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--accent-dark);
  border-radius: 2px;
  transition: width .25s var(--ease-out-expo), background-color .4s ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--ink); }
.nav-links a:not(.nav-cta):hover::after { width: 100%; }
.nav-active { font-weight: 600; color: var(--ink) !important; }
.nav-active:not(.nav-cta)::after { width: 100% !important; }

.nav-cta {
  font-size: 13px; font-weight: 600; padding: 8px 16px;
  background: var(--nav-cta-bg);
  color: var(--nav-cta-text) !important;
  border-radius: 8px;
  transition: background .2s, transform .15s, color .4s ease;
}
.nav-cta:hover { background: var(--nav-cta-bg-h); transform: translateY(-1px); }

.theme-toggle {
  width: 34px; height: 34px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border-l);
  border-radius: 50%;
  color: var(--ink-dim);
  cursor: pointer;
  padding: 0;
  transition: color .25s ease, border-color .25s ease, background .25s ease,
              transform .3s var(--ease-spring);
}
.theme-toggle:hover {
  color: var(--accent-dark);
  border-color: var(--accent);
  background: var(--accent-glow-2);
  transform: rotate(-12deg);
}
[data-theme="dark"] .theme-toggle:hover {
  color: var(--accent);
  transform: rotate(12deg);
}
.tt-icon { display: none; }
[data-theme="light"] .tt-moon,
:root:not([data-theme="dark"]) .tt-moon { display: block; }
[data-theme="dark"] .tt-sun { display: block; }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px; background: none; border: none;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .25s var(--ease-out-expo), opacity .2s, background-color .4s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border-l);
  padding: 20px 32px 24px;
  z-index: 99;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-6px);
  opacity: 0;
  transition: transform .25s var(--ease-out-expo), opacity .2s,
              background-color .4s ease, border-color .4s ease;
}
.mobile-menu.open { display: flex; transform: translateY(0); opacity: 1; }
.mobile-menu a {
  font-size: 16px; color: var(--ink-dim);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-l);
  transition: color .2s, border-color .4s ease;
}
.mobile-menu a:hover { color: var(--ink); }
.mobile-menu a:last-of-type { border-bottom: none; }

.mobile-theme-toggle {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%;
  padding: 14px 0 2px;
  background: none;
  border: none;
  border-top: 1px solid var(--border-l);
  margin-top: 6px;
  font-family: inherit;
  font-size: 16px;
  color: var(--ink-dim);
  cursor: pointer;
  transition: color .2s, border-color .4s ease;
}
.mobile-theme-toggle:hover { color: var(--accent-dark); }
[data-theme="dark"] .mobile-theme-toggle:hover { color: var(--accent); }
.mtt-label-light, .mtt-label-dark { display: none; }
[data-theme="light"] .mtt-label-light,
:root:not([data-theme="dark"]) .mtt-label-light { display: inline; }
[data-theme="dark"] .mtt-label-dark { display: inline; }
.mtt-icon-wrap {
  width: 30px; height: 30px;
  border: 1px solid var(--border-l);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  transition: border-color .2s;
}
.mobile-theme-toggle:hover .mtt-icon-wrap { border-color: var(--accent); }

/* ─── PAGE LAYOUT ────────────────────────────────────── */
.ai-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
  padding-top: var(--nav-h);
  align-items: start;
}
.ai-banner {
  grid-column: 1; grid-row: 1;
  width: 100%; height: 225px;
  position: relative;
  border-bottom: 1px solid var(--border-l);
  border-right: 1px solid var(--border-l);
  overflow: hidden;
  flex-shrink: 0;
}
.showcase-panel {
  grid-column: 1; grid-row: 2;
  background: var(--surface);
  border-right: 1px solid var(--border-l);
  display: flex; flex-direction: column;
  min-width: 0; overflow-x: hidden;
  transition: background-color .4s ease, border-color .4s ease;
}
.meta-panel {
  grid-column: 2; grid-row: 1 / 3;
  position: sticky; top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--border-l);
  -webkit-overflow-scrolling: touch;
  transition: background-color .4s ease, border-color .4s ease;
}
.meta-panel::-webkit-scrollbar { width: 4px; }
.meta-panel::-webkit-scrollbar-track { background: transparent; }
.meta-panel::-webkit-scrollbar-thumb { background: var(--border-l); border-radius: 4px; }

/* ─── META PANEL ─────────────────────────────────────── */
.meta-inner {
  padding: 48px 40px;
  display: flex; flex-direction: column; gap: 28px;
}
.meta-divider { height: 1px; background: var(--border-l); transition: background-color .4s ease; }

.glance-card {
  background: var(--surface);
  border: 1px solid var(--border-l);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: background-color .4s ease, border-color .4s ease;
}
.glance-card-header {
  padding: 14px 20px;
  background: var(--navy);
  transition: background-color .4s ease;
}
.glance-card-title {
  font-size: 1em; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: #fff;
}
.glance-list { display: flex; flex-direction: column; }
.glance-row {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 12px;
  padding: 11px 20px;
  border-bottom: 1px solid var(--border-l);
  transition: border-color .4s ease;
}
.glance-row:last-child { border-bottom: none; }
.glance-key {
  color: var(--ink); font-size: 14px; font-weight: 500; flex-shrink: 0;
}
.glance-val {
  color: var(--ink); font-size: 14px; font-weight: 600; text-align: right; line-height: 1.5;
}

.finding-card {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 11px;
  position: relative; overflow: hidden;
}
.finding-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
}
.finding-label {
  font-size: .9em; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: rgba(255,255,255,.42);
}
.finding-text { font-size: 16px; line-height: 1.8; color: #fff; }

.cta-card {
  background: var(--surface);
  border: 1px solid var(--border-l);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .25s var(--ease-gentle), transform .25s var(--ease-spring),
              background-color .4s ease, border-color .4s ease;
}
.cta-card:hover { box-shadow: var(--shadow-soft); transform: translateY(-3px); }
.cta-card-body { padding: 28px 24px; display: flex; flex-direction: column; gap: 14px; }
.cta-headline {
  font-weight: 800;
  font-size: clamp(18px, 1.6vw, 23px);
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -.4px;
}
.cta-sub { font-size: 14px; color: var(--ink-dim); line-height: 1.6; }

.cta-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%;
  font-size: 20px; font-weight: 700;
  color: var(--on-accent);
  background: var(--accent);
  padding: 17px 22px;
  border-radius: 10px;
  transition: background .2s, transform .2s var(--ease-spring), box-shadow .2s, color .4s ease;
}
.cta-btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px var(--accent-glow);
}
.cta-btn svg { flex-shrink: 0; transition: transform .2s; }
.cta-btn:hover svg { transform: translateX(4px); }

/* ─── SHOWCASE PANEL ─────────────────────────────────── */
.showcase-inner {
  flex: 1;
  padding: 52px 52px 40px;
  display: flex; flex-direction: column; gap: 52px;
}

.showcase-header { display: flex; flex-direction: column; gap: 16px; }
.header-eyebrow  { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--blue);
  background: var(--accent-tint);
  border: 1px solid var(--accent-border);
  padding: 5px 12px;
  border-radius: 20px;
  transition: color .4s ease, background-color .4s ease, border-color .4s ease;
}
.showcase-title {
  font-weight: 800;
  font-size: clamp(30px, 3.8vw, 50px);
  letter-spacing: -1.2px;
  color: var(--ink);
  line-height: 1.05;
}
.showcase-subtitle { font-size: 1.15em; color: var(--ink-dim); line-height: 1.75; }

.section-label {
  font-weight: 800;
  font-size: 22px;
  color: var(--ink);
  letter-spacing: -.4px;
  line-height: 1.2;
  margin-bottom: 6px;
  display: block;
}
.section-body { font-size: 15px; line-height: 1.85; color: var(--ink); }
.section-body + .section-body { margin-top: 14px; }

.img-caption {
  font-size: 12px; font-weight: 600; color: var(--ink-dim);
  text-align: center; display: block; margin-top: 10px;
}

/* ─── SPLIT SECTION ──────────────────────────────────── */
.split-section { display: flex; flex-direction: column; gap: 16px; }
.split-header-row { display: flex; align-items: center; gap: 16px; }
.split-section-label-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border-l), transparent);
}
.split-principle {
  font-size: 15px; line-height: 1.75; color: var(--ink-dim);
  border-left: 3px solid var(--accent);
  padding: 10px 18px;
  background: var(--accent-tint);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.split-principle strong { color: var(--ink); font-weight: 600; }

.split-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  border: 1px solid var(--border-l);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  transition: background-color .4s ease, border-color .4s ease;
}
.split-col {
  padding: 28px 26px 32px;
  display: flex; flex-direction: column; gap: 18px;
}
.split-col--ai    { background: var(--ai-bg); }
.split-col--human { background: var(--human-bg); }

.split-divider {
  width: 1px; background: var(--border-l);
  display: flex; align-items: center; justify-content: center;
  transition: background-color .4s ease;
}
.split-divider-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--surface);
  border: 1.5px solid var(--border-l);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background-color .4s ease, border-color .4s ease;
}
.split-col-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.4px;
  padding: 6px 13px;
  border-radius: 20px;
  align-self: flex-start;
}
.split-col-pill--ai {
  color: var(--blue);
  background: var(--accent-tint);
  border: 1px solid var(--ai-mid);
}
.split-col-pill--human {
  color: var(--ink);
  background: var(--panel-mid);
  border: 1px solid var(--human-mid);
}
.split-list { display: flex; flex-direction: column; gap: 10px; }
.split-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; line-height: 1.45; color: var(--ink); font-weight: 500;
}
.split-list li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}
.split-col--ai .split-list li::before { background: var(--accent); opacity: .8; }
.split-col--human .split-list li::before { background: var(--navy); opacity: .8; }
.split-caption {
  font-size: 12px; font-weight: 600; color: var(--ink-dim);
  text-align: center; padding-top: 2px;
}

/* ─── PROMPT / ANNOTATION SHOWCASE ───────────────────── */
.prompt-section { display: flex; flex-direction: column; gap: 16px; }
.prompt-section-intro { font-size: 15px; line-height: 1.8; color: var(--ink); }

.prompt-showcase {
  border: 1px solid var(--border-l);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .4s ease;
}
.prompt-img-wrap {
  background: var(--panel);
  padding: 24px 32px;
  overflow: hidden;
  transition: background-color .4s ease;
}
.prompt-img-wrap img {
  width: 100%;
  display: block;
  border-radius: var(--radius);
  box-shadow: 0 2px 18px rgba(0,0,0,.12);
}
.prompt-annotations {
  background: var(--surface);
  border-top: 1px solid var(--border-l);
  display: grid; grid-template-columns: repeat(3, 1fr);
  transition: background-color .4s ease, border-color .4s ease;
}
.annotation {
  padding: 16px 20px;
  border-right: 1px solid var(--border-l);
  display: flex; flex-direction: column; gap: 5px;
  transition: border-color .4s ease;
}
.annotation:last-child { border-right: none; }
.annotation-index {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent-tint);
  border: 1px solid var(--accent-border);
  font-size: 14px; font-weight: 700; color: var(--blue);
  margin-bottom: 4px;
}
.annotation-label {
  font-size: 14px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.2px; color: var(--blue);
}
.annotation-desc { font-size: 12px; line-height: 1.6; color: var(--ink); }

/* ─── DISCLAIMER ─────────────────────────────────────── */
.disclaimer-block {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 20px 22px;
  background: var(--panel);
  border: 1px solid var(--border-l);
  border-radius: var(--radius);
  transition: background-color .4s ease, border-color .4s ease;
}
.disclaimer-icon { flex-shrink: 0; color: var(--ink-dim); margin-top: 1px; }
.disclaimer-body { display: flex; flex-direction: column; gap: 5px; }
.disclaimer-title {
  font-size: 11px; font-weight: 700; color: var(--ink-dim);
  text-transform: uppercase; letter-spacing: 1px;
}
.disclaimer-text { font-size: 12.5px; color: var(--ink-dim); line-height: 1.7; }

/* ─── CONTACT FORM ───────────────────────────────────── */
.contact-section { display: flex; flex-direction: column; }

.mc-header {
  background: var(--dark);
  position: relative;
  padding: 48px 40px 44px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}
.mc-header::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 20% 40%, rgba(37, 99, 235, .28) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 85% 75%, rgba(26, 58, 92, .45) 0%, transparent 70%);
  pointer-events: none;
}
.mc-header::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--accent);
}
.mc-eyebrow {
  position: relative; z-index: 1;
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.8px; color: rgba(255,255,255,.45);
  margin-bottom: 10px;
}
.mc-headline {
  position: relative; z-index: 1;
  font-weight: 800;
  font-size: clamp(26px, 4vw, 38px);
  color: #fff;
  line-height: 1.15;
  letter-spacing: -.6px;
  margin-bottom: 12px;
}
.mc-sub {
  position: relative; z-index: 1;
  font-size: 14px; line-height: 1.7;
  color: rgba(255,255,255,.6);
}
.mc-form-wrap {
  background: var(--surface);
  border: 1px solid var(--border-l);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: 36px 40px 40px;
  transition: background-color .4s ease, border-color .4s ease;
}
.mc-form { display: flex; flex-direction: column; gap: 12px; }
.mc-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mc-form-group { display: flex; flex-direction: column; }
.mc-input, .mc-textarea {
  width: 100%;
  padding: 13px 16px;
  font-family: 'Noto Sans', sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--panel);
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  outline: none;
  transition: border-color .2s, background .2s, box-shadow .2s, color .4s ease;
  appearance: none;
  -webkit-appearance: none;
}
.mc-input::placeholder, .mc-textarea::placeholder { color: var(--ink-dim); }
.mc-input:focus, .mc-textarea:focus {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--accent-glow-2);
}
.mc-input-error { border-color: #EF4444 !important; animation: mc-shake .35s ease; }
@keyframes mc-shake {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-6px); }
  75%      { transform: translateX(6px); }
}
.mc-textarea { resize: vertical; min-height: 120px; line-height: 1.65; }

.mc-btn-submit {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  width: 100%;
  margin-top: 4px;
  padding: 18px 28px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 20px; font-weight: 700;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background .2s, transform .2s var(--ease-spring), box-shadow .2s, color .4s ease;
}
.mc-btn-submit:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px var(--accent-glow);
}
.mc-btn-submit:active:not(:disabled) { transform: translateY(0); }
.mc-btn-submit:disabled { opacity: .65; cursor: not-allowed; }
.mc-btn-submit svg { flex-shrink: 0; transition: transform .2s; }
.mc-btn-submit:hover:not(:disabled) svg { transform: translateX(4px); }

.mc-success {
  display: none; align-items: center; gap: 10px;
  padding: 16px 20px; margin-top: 4px;
  background: var(--success-bg);
  border: 1px solid var(--success-bd);
  border-radius: var(--radius);
  font-size: 14px; color: var(--ink); line-height: 1.65;
}
.mc-success.visible { display: flex; }

/* ─── FOOTER ─────────────────────────────────────────── */
.showcase-footer {
  padding: 24px 52px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  border-top: 1px solid var(--border-l);
  transition: border-color .4s ease;
}
.footer-copy { font-size: 12px; color: var(--ink-dim); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 12px; color: var(--ink-dim); transition: color .2s; }
.footer-links a:hover { color: var(--ink); }

/* ─── RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 1100px) {
  .showcase-inner { padding: 44px 40px 32px; }
  .meta-inner     { padding: 40px 32px; }
}

@media (max-width: 960px) {
  .ai-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    max-width: 100%;
    overflow-x: hidden;
  }
  .ai-banner {
    grid-column: 1; grid-row: 1; order: 1;
    border-right: none;
    border-bottom: 1px solid var(--border-l);
  }
  .meta-panel {
    grid-column: 1; grid-row: 2; order: 2;
    position: relative;
    top: auto;
    height: auto;
    overflow-y: visible;
    border-left: none;
    border-top: 1px solid var(--border-l);
    border-bottom: 1px solid var(--border-l);
    max-width: 100%;
    overflow-x: hidden;
  }
  .showcase-panel {
    grid-column: 1; grid-row: 3; order: 3;
    border-right: none;
    max-width: 100%;
    overflow-x: hidden;
  }
  .meta-inner      { padding: 40px 36px; }
  .showcase-inner  { padding: 40px 36px 28px; gap: 40px; }
  .showcase-footer { padding: 24px 36px; }
  .cta-card        { display: none; }
}

@media (max-width: 768px) {
  nav { padding: 0 20px; }
  .nav-links, .nav-status { display: none; }
  .hamburger { display: flex; }

  .showcase-inner  { padding: 32px 24px 24px; gap: 32px; }
  .showcase-footer { padding: 20px 24px; flex-direction: column; align-items: flex-start; }
  .meta-inner      { padding: 32px 24px; }

  .glance-row { flex-direction: column; gap: 3px; }
  .glance-val { text-align: left; }
  .glance-key, .glance-val { font-size: 14px; }
  .finding-text { font-size: 15px; line-height: 1.75; }

  .split-grid { grid-template-columns: 1fr 1fr; }
  .split-divider { display: none; }

  .prompt-annotations { grid-template-columns: 1fr; }
  .annotation {
    border-right: none;
    border-bottom: 1px solid var(--border-l);
  }
  .annotation:last-child { border-bottom: none; }

  .mc-header    { padding: 40px 28px 36px; }
  .mc-form-wrap { padding: 28px 28px 32px; }
  .mc-form-row  { grid-template-columns: 1fr; }
  .mc-btn-submit,
  .cta-btn      { font-size: 16px; padding: 17px 24px; }
}

@media (max-width: 480px) {
  .showcase-inner  { padding: 28px 20px 20px; gap: 28px; }
  .meta-inner      { padding: 28px 20px; }
  .showcase-footer { padding: 20px; flex-direction: column; align-items: flex-start; }
  .showcase-title  { letter-spacing: -.8px; }
  .ai-banner       { height: 160px; }

  .split-grid    { grid-template-columns: 1fr; }
  .split-col--ai { border-bottom: 1px solid var(--border-l); }

  .glance-key, .glance-val { font-size: 13px; }

  .mc-header    { padding: 32px 20px 28px; }
  .mc-headline  { font-size: 24px; }
  .mc-form-wrap { padding: 24px 20px 28px; }
  .mc-btn-submit { font-size: 15px; padding: 16px 20px; }
}