/* ============================================
   ProofNudge — Design System & Full Styles
   ============================================ */

/* --- Tokens --- */
:root {
  --color-blue: #0d88f1;
  --color-blue-light: #26a9d9;
  --color-coral: #ff5b49;
  --color-navy: #15212b;
  --color-navy-soft: #1c2e3a;
  --color-green: #1a9a5a;
  --color-purple: #7c5cbf;
  --color-orange: #e08a2c;
  --color-red: #e04040;
  --color-bg: #fcfcfd;
  --color-surface: #ffffff;
  --color-surface-alt: #f6f8fa;
  --color-border: #e2e8f0;
  --color-border-light: #eef2f6;
  --color-text: #1a2b3b;
  --color-text-secondary: #5a6b7c;
  --color-text-tertiary: #8b99a6;
  --color-accent: var(--color-blue);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);
  --transition: 0.2s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; border: none; background: none; cursor: pointer; }
input { font: inherit; }
ul { list-style: none; }
code { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.875em; background: var(--color-surface-alt); padding: 0.15em 0.4em; border-radius: 4px; color: var(--color-blue); }

/* --- Layout --- */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 10px; font-weight: 600; font-size: 0.9375rem;
  background: linear-gradient(135deg, var(--color-blue-light), var(--color-blue));
  color: #fff; transition: all var(--transition); border: none;
  box-shadow: 0 2px 8px rgba(13,136,241,0.25);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(13,136,241,0.35); }
.btn-sm { padding: 8px 20px; font-size: 0.8125rem; border-radius: 8px; }
.btn-lg { padding: 16px 36px; font-size: 1.0625rem; border-radius: 12px; }
.btn-outline {
  background: transparent; color: var(--color-text);
  box-shadow: inset 0 0 0 1.5px var(--color-border);
}
.btn-outline:hover { box-shadow: inset 0 0 0 1.5px var(--color-blue); color: var(--color-blue); transform: translateY(-1px); }
.btn-white {
  background: #fff; color: var(--color-navy);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.btn-white:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,0.15); }

/* --- Section Headers --- */
.section-header { text-align: center; margin-bottom: 56px; }
.section-label {
  display: inline-block; font-size: 0.8125rem; font-weight: 600;
  color: var(--color-blue); text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700;
  line-height: 1.15; letter-spacing: -0.02em;
}
.section-header h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; }
.section-desc {
  font-size: 1.0625rem; color: var(--color-text-secondary); max-width: 540px;
  margin: 12px auto 0; line-height: 1.65;
}

/* --- Nav --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(252,252,253,0.85); backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent; transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--color-border-light); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1120px; margin: 0 auto; padding: 0 24px; height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1.0625rem; }
.nav-logo svg { flex-shrink: 0; display: block; height: auto; }
.nav-logo-img { height: 45px; width: auto; flex-shrink: 0; display: block; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.875rem; color: var(--color-text-secondary); transition: color var(--transition); font-weight: 500; }
.nav-links a:hover { color: var(--color-text); }
.nav-links .btn { margin-left: 8px; color: #fff; }
.nav-links .btn:hover { color: #fff; }
.nav-toggle { display: none; width: 28px; height: 20px; position: relative; }
.nav-toggle span { display: block; width: 100%; height: 2px; background: var(--color-text); border-radius: 2px; position: absolute; transition: all 0.25s; }
.nav-toggle span:first-child { top: 0; }
.nav-toggle span:last-child { bottom: 0; }
.nav-toggle.active span:first-child { top: 50%; transform: translateY(-50%) rotate(45deg); }
.nav-toggle.active span:last-child { bottom: 50%; transform: translateY(50%) rotate(-45deg); }
.mobile-menu {
  display: none; position: fixed; top: 64px; left: 0; right: 0; z-index: 99;
  background: var(--color-surface); border-bottom: 1px solid var(--color-border-light);
  padding: 16px 24px; flex-direction: column; gap: 12px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 1rem; padding: 8px 0; font-weight: 500; }

/* --- Hero --- */
.hero {
  position: relative; padding: 140px 0 100px; overflow: hidden;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-alt) 100%);
}
.hero-glow {
  position: absolute; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(38,169,217,0.08) 0%, transparent 70%);
  top: -120px; left: -100px; pointer-events: none;
}
.hero-glow-2 {
  background: radial-gradient(circle, rgba(13,136,241,0.06) 0%, transparent 70%);
  top: 0; left: auto; right: -200px;
}
.hero .container { display: flex; align-items: flex-start; gap: 64px; }
.hero-content { flex: 0 0 44%; padding-top: 24px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; font-size: 0.8125rem;
  font-weight: 500; color: var(--color-text-secondary); background: var(--color-surface);
  border: 1px solid var(--color-border-light); padding: 6px 14px; border-radius: 100px;
  margin-bottom: 24px;
}
.hero-badge-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--color-green);
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem); font-weight: 700;
  line-height: 1.12; letter-spacing: -0.025em; margin-bottom: 20px;
}
.hero h1 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; color: var(--color-blue); }
.hero-sub {
  font-size: 1.0625rem; line-height: 1.65; color: var(--color-text-secondary);
  margin-bottom: 32px; max-width: 480px;
}
.hero-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.hero-note { font-size: 0.8125rem; color: var(--color-text-tertiary); }

/* Hero Visual / Mockup */
.hero-visual { flex: 1; position: relative; min-width: 0; }
.mockup {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.02);
}
.mockup-bar {
  display: flex; align-items: center; gap: 12px; padding: 10px 16px;
  background: var(--color-surface-alt); border-bottom: 1px solid var(--color-border-light);
}
.mockup-dots { display: flex; gap: 6px; }
.mockup-dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--color-border); }
.mockup-url {
  display: flex; align-items: center; gap: 6px; font-size: 0.75rem;
  color: var(--color-text-tertiary); background: var(--color-surface);
  padding: 4px 12px; border-radius: 6px; border: 1px solid var(--color-border-light); flex: 1;
}
.mockup-body { display: flex; padding: 24px; gap: 24px; }
.mockup-img-col { flex: 0 0 48%; display: flex; flex-direction: column; gap: 10px; }
.mockup-product-img {
  background: #f3eeea; border-radius: var(--radius-md);
  aspect-ratio: 340/400; position: relative; overflow: visible;
}
.mockup-product-img > svg { width: 100%; height: 100%; border-radius: var(--radius-md); }
.mockup-thumbs { display: flex; gap: 8px; }
.mockup-thumb { width: 48px; height: 48px; border-radius: 6px; overflow: hidden; border: 2px solid transparent; opacity: 0.5; cursor: pointer; }
.mockup-thumb.active { border-color: var(--color-border); opacity: 1; }
.mockup-thumb svg { width: 100%; height: 100%; }
.mockup-info-col { flex: 1; display: flex; flex-direction: column; gap: 0; }
.m-brand { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-tertiary); margin-bottom: 4px; }
.m-title { font-size: 1.0625rem; font-weight: 600; line-height: 1.35; margin-bottom: 8px; }
.m-reviews { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.m-stars { display: flex; gap: 2px; }
.m-review-count { font-size: 0.75rem; color: var(--color-text-tertiary); }
.m-price { font-size: 1.125rem; font-weight: 600; margin-bottom: 16px; }

/* Proof toast overlays */
.proof-overlay {
  position: absolute; bottom: 12px; left: 10px; right: 10px;
  display: flex; flex-direction: column-reverse; gap: 6px;
  pointer-events: none; z-index: 2;
}
.proof-overlay-info {
  display: flex; flex-direction: column; gap: 6px;
  pointer-events: none; min-height: 34px; margin-bottom: 4px;
}
.proof-toast {
  display: flex; align-items: center; gap: 7px; font-size: 0.75rem;
  font-weight: 500; padding: 8px 12px; border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  opacity: 0; transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  width: fit-content; max-width: 100%; white-space: nowrap;
}
.proof-toast.toast-visible { opacity: 1; transform: translateY(0); }
.proof-toast svg { width: 12px; height: 12px; flex-shrink: 0; }
.proof-msg-viewers { background: rgba(255,255,255,0.92); color: #0e7cb8; }
.proof-msg-sales { background: rgba(255,255,255,0.92); color: #158049; }
.proof-msg-stock { background: rgba(255,255,255,0.92); color: #d03a2a; }
.proof-msg-trending { background: rgba(255,255,255,0.92); color: #6447a0; }
.proof-msg-shipping { background: rgba(255,255,255,0.92); color: #0a6ec1; }
.proof-overlay-info .proof-toast {
  background: var(--color-surface-alt); border: 1px solid var(--color-border-light);
  backdrop-filter: none;
}

.proof-dot {
  width: 7px; height: 7px; border-radius: 50%; background: currentColor;
  animation: pulse-dot 2s ease infinite; flex-shrink: 0;
}

/* Product options */
.m-options { margin-bottom: 16px; }
.m-option-label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-secondary); display: block; margin-bottom: 6px; }
.m-option-row { display: flex; gap: 6px; }
.m-opt {
  padding: 6px 14px; border-radius: 6px; font-size: 0.8125rem; font-weight: 500;
  border: 1.5px solid var(--color-border); color: var(--color-text-secondary);
  transition: all var(--transition); cursor: pointer;
}
.m-opt.selected { border-color: var(--color-text); color: var(--color-text); background: var(--color-surface-alt); }
.m-atc {
  width: 100%; padding: 12px; border-radius: 10px; background: var(--color-navy);
  color: #fff; font-weight: 600; font-size: 0.9375rem; cursor: default;
  margin-bottom: 8px; text-align: center;
}
.m-meta { font-size: 0.6875rem; color: var(--color-text-tertiary); text-align: center; }


/* --- Data Flow --- */
.data-flow { padding: 100px 0; background: var(--color-surface-alt); }
.flow-visual {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  gap: 0; max-width: 920px; margin: 0 auto;
}
.flow-col { display: flex; flex-direction: column; align-items: center; }
.flow-col-engine { display: flex; align-items: center; gap: 0; flex-direction: row; }
.flow-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 24px; width: 100%;
}
.flow-card-label {
  font-size: 0.6875rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-text-tertiary); margin-bottom: 16px;
}
.flow-data-rows { display: flex; flex-direction: column; gap: 10px; }
.flow-data-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 0; border-bottom: 1px solid var(--color-border-light);
}
.flow-data-row:last-child { border-bottom: none; }
.fdr-key { font-size: 0.8125rem; color: var(--color-text-secondary); }
.fdr-val { font-size: 0.875rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.flow-arrow-in, .flow-arrow-out { padding: 0 12px; display: flex; align-items: center; }
.flow-card-engine {
  background: var(--color-navy); border-color: var(--color-navy-soft); color: #fff;
  text-align: center; padding: 28px 24px; min-width: 210px;
}
.flow-engine-logo { display: flex; justify-content: center; margin-bottom: 8px; }
.flow-engine-name { font-weight: 600; font-size: 0.9375rem; margin-bottom: 14px; display: block; }
.flow-engine-template { display: flex; flex-direction: column; gap: 8px; text-align: left; }
.flow-tpl-line { display: flex; flex-direction: column; gap: 3px; }
.flow-tpl-label {
  font-size: 0.5625rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.4); font-weight: 600;
}
.flow-tpl-code {
  font-size: 0.6875rem; color: rgba(255,255,255,0.7); padding: 5px 8px;
  background: rgba(255,255,255,0.06); border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.08); font-family: 'SF Mono', 'Fira Code', monospace;
}
.flow-var { color: #5bc0eb; font-weight: 600; }
.flow-val { color: #4ee68f; font-weight: 600; }
.flow-tpl-output {
  background: rgba(78,230,143,0.08); border-color: rgba(78,230,143,0.2);
  color: rgba(255,255,255,0.9);
}
.flow-card-messages { border-color: var(--color-blue); border-width: 1.5px; }
.flow-output-msgs { display: flex; flex-direction: column; gap: 10px; }
.flow-msg {
  display: flex; align-items: center; gap: 8px; font-size: 0.8125rem;
  font-weight: 500; padding: 8px 12px; border-radius: var(--radius-sm);
}
.flow-msg-blue { background: rgba(38,169,217,0.08); color: #0e7cb8; }
.flow-msg-green { background: rgba(26,154,90,0.08); color: #158049; }
.flow-msg-red { background: rgba(255,91,73,0.08); color: #d03a2a; }

/* --- Features Bento --- */
.features { padding: 100px 0; }
.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.bento-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px; overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
}
.bento-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.bento-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; }
.bento-card p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }
.bento-wide { grid-column: span 4; display: flex; align-items: center; gap: 40px; }
.bento-wide .bento-text { flex: 1; }
.bento-wide .bento-demo { flex: 1; }
.bento-wide-reverse { flex-direction: row; }
.bento-small { grid-column: span 2; }

/* Variable ticker */
.bento-demo-vars { overflow: hidden; border-radius: var(--radius-md); }
.var-ticker { overflow: hidden; mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent); }
.var-ticker-track {
  display: flex; gap: 10px; width: max-content;
  animation: ticker 30s linear infinite;
}
@keyframes ticker { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.var-chip {
  display: inline-flex; padding: 6px 14px; border-radius: 100px;
  font-size: 0.75rem; font-family: 'SF Mono', 'Fira Code', monospace;
  font-weight: 500; white-space: nowrap; flex-shrink: 0;
}
.var-chip-blue { background: rgba(13,136,241,0.08); color: #0a6ec1; }
.var-chip-green { background: rgba(26,154,90,0.08); color: #158049; }
.var-chip-orange { background: rgba(224,138,44,0.08); color: #b06e1e; }
.var-chip-purple { background: rgba(124,92,191,0.08); color: #6447a0; }
.var-chip-red { background: rgba(255,91,73,0.08); color: #d03a2a; }

/* Rule builder */
.bento-demo-rules { background: var(--color-navy); border-radius: var(--radius-md); padding: 24px; }
.rule-builder { display: flex; flex-direction: column; gap: 8px; }
.rule-row {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.rule-keyword {
  font-size: 0.75rem; font-weight: 700; color: var(--color-blue-light);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.rule-field {
  font-size: 0.8125rem; font-family: 'SF Mono', 'Fira Code', monospace;
  color: rgba(255,255,255,0.85); background: rgba(255,255,255,0.08);
  padding: 4px 10px; border-radius: 4px;
}
.rule-op { font-size: 0.875rem; font-weight: 600; color: var(--color-coral); }
.rule-value {
  font-size: 0.8125rem; font-weight: 600; color: var(--color-green);
  background: rgba(26,154,90,0.15); padding: 4px 10px; border-radius: 4px;
}
.rule-logic {
  font-size: 0.6875rem; font-weight: 700; color: rgba(255,255,255,0.4);
  text-transform: uppercase; letter-spacing: 0.06em; padding-left: 4px;
}
.rule-then { display: flex; justify-content: center; padding: 4px 0; }
.rule-output {
  display: flex; align-items: center; gap: 8px; font-size: 0.8125rem;
  color: rgba(255,255,255,0.9); background: rgba(38,169,217,0.12);
  padding: 8px 14px; border-radius: var(--radius-sm); border: 1px solid rgba(38,169,217,0.2);
}
.rule-output .proof-dot { background: var(--color-blue-light); }

/* Bento mini demos */
.bento-mini-demo { margin-top: 20px; }

/* Placement grid */
.placement-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px;
  max-width: 140px;
}
.pg-cell {
  aspect-ratio: 1; border-radius: 4px; background: var(--color-surface-alt);
  border: 1.5px solid var(--color-border-light); transition: all 0.3s;
}
.pg-active { background: rgba(13,136,241,0.1); border-color: var(--color-blue); }
.pg-accent { background: rgba(255,91,73,0.08); border-color: var(--color-coral); }

/* Target tags */
.target-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tt {
  padding: 5px 12px; border-radius: 100px; font-size: 0.75rem; font-weight: 500;
  border: 1.5px solid var(--color-border); color: var(--color-text-tertiary);
  transition: all 0.3s;
}
.tt-active { border-color: var(--color-blue); color: var(--color-blue); background: rgba(13,136,241,0.05); }

/* Preset stack */
.preset-stack { display: flex; flex-direction: column; gap: 6px; }
.preset-card {
  padding: 10px 16px; border-radius: var(--radius-sm); font-size: 0.8125rem;
  font-weight: 500; border-left: 3px solid;
}
.pc-1 { background: rgba(26,154,90,0.06); border-color: var(--color-green); color: #158049; }
.pc-2 { background: rgba(255,91,73,0.06); border-color: var(--color-coral); color: #d03a2a; }
.pc-3 { background: rgba(13,136,241,0.06); border-color: var(--color-blue); color: #0a6ec1; }

/* Style demo */
.style-demo { display: flex; gap: 8px; flex-wrap: wrap; }
.sd-msg {
  padding: 8px 14px; border-radius: var(--radius-sm); font-size: 0.75rem;
  font-weight: 500; background: var(--color-surface-alt); border: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

/* --- Message Types --- */
.msg-types { padding: 100px 0; background: var(--color-surface-alt); }
.msg-scroll-wrap {
  overflow-x: auto; overflow-y: visible; -webkit-overflow-scrolling: touch;
  scrollbar-width: none; padding: 0 24px 24px;
}
.msg-scroll-wrap::-webkit-scrollbar { display: none; }
.msg-scroll {
  display: flex; gap: 16px; padding: 4px 0;
  min-width: max-content;
}
.msg-type-card {
  flex: 0 0 260px; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 24px; transition: box-shadow 0.3s, transform 0.3s;
}
.msg-type-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.mtc-tag {
  display: inline-block; padding: 3px 10px; border-radius: 100px;
  font-size: 0.6875rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.04em; margin-bottom: 16px;
}
.mtc-tag-blue { background: rgba(13,136,241,0.08); color: #0a6ec1; }
.mtc-tag-green { background: rgba(26,154,90,0.08); color: #158049; }
.mtc-tag-red { background: rgba(255,91,73,0.08); color: #d03a2a; }
.mtc-tag-purple { background: rgba(124,92,191,0.08); color: #6447a0; }
.mtc-tag-orange { background: rgba(224,138,44,0.08); color: #b06e1e; }
.mtc-example {
  display: flex; align-items: center; gap: 8px; font-size: 0.8125rem;
  font-weight: 500; padding: 10px 14px; border-radius: var(--radius-sm);
  background: var(--color-surface-alt); margin-bottom: 16px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.mtc-example .proof-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-blue-light); animation: pulse-dot 2s ease infinite; flex-shrink: 0; }
.msg-type-card h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.msg-type-card p { font-size: 0.8125rem; color: var(--color-text-secondary); line-height: 1.5; }

/* --- Calculator --- */
.calculator { padding: 100px 0; }
.calc-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: 48px; max-width: 800px; margin: 0 auto;
  box-shadow: var(--shadow-md);
  display: flex; gap: 48px; align-items: flex-start;
}
.calc-inputs { flex: 1; display: flex; flex-direction: column; gap: 24px; }
.calc-field label {
  display: block; font-size: 0.8125rem; font-weight: 600;
  color: var(--color-text-secondary); margin-bottom: 6px;
}
.calc-field input {
  width: 100%; padding: 10px 14px; border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border); font-size: 1rem; font-weight: 500;
  color: var(--color-text); transition: border-color var(--transition);
  background: var(--color-bg);
}
.calc-field input:focus { outline: none; border-color: var(--color-blue); }
.calc-input-wrap {
  position: relative; display: flex; align-items: center;
}
.calc-input-wrap input { padding-left: 28px; }
.calc-prefix, .calc-suffix {
  position: absolute; font-size: 0.875rem; font-weight: 500; color: var(--color-text-tertiary);
  pointer-events: none;
}
.calc-prefix { left: 12px; }
.calc-suffix { right: 12px; }
.calc-input-wrap:has(.calc-suffix) input { padding-right: 32px; padding-left: 14px; }
.calc-divider {
  width: 1px; background: var(--color-border); align-self: stretch;
}
.calc-results { flex: 1; display: flex; flex-direction: column; gap: 20px; padding-top: 4px; }
.calc-result-row { display: flex; justify-content: space-between; align-items: baseline; }
.calc-result-label { font-size: 0.875rem; color: var(--color-text-secondary); }
.calc-result-value { font-size: 1rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.calc-result-highlight {
  background: rgba(13,136,241,0.04); margin: 0 -16px; padding: 16px;
  border-radius: var(--radius-md); border: 1px solid rgba(13,136,241,0.1);
}
.calc-result-big { font-size: 1.5rem; color: var(--color-blue); }
.calc-result-delta { border-top: 1px solid var(--color-border-light); padding-top: 16px; }
.calc-result-green { color: var(--color-green); }
.calc-lift {
  display: inline-flex; font-size: 0.6875rem; font-weight: 600;
  background: rgba(13,136,241,0.08); color: var(--color-blue);
  padding: 2px 8px; border-radius: 100px; margin-left: 8px;
}

/* --- Pricing --- */
.pricing { padding: 100px 0; background: var(--color-surface-alt); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 860px; margin: 0 auto; }
.pricing-row-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; max-width: 570px; margin: 18px auto 0; }
.pricing-enterprise {
  max-width: 860px; margin: 28px auto 0; background: var(--color-surface);
  border: 2px solid var(--color-navy); border-radius: var(--radius-xl);
  padding: 32px 40px; display: flex; align-items: center; gap: 32px;
}
.pricing-enterprise-info { flex: 1; }
.pricing-enterprise-info h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 4px; }
.pricing-enterprise-info p { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.5; margin: 0; }
.pricing-enterprise-features {
  display: flex; gap: 20px; margin-top: 12px; flex-wrap: wrap;
}
.pricing-enterprise-features span {
  font-size: 0.8rem; color: var(--color-text-secondary);
  display: inline-flex; align-items: center; gap: 5px;
}
.pricing-enterprise-features svg { flex-shrink: 0; }
.pricing-enterprise .btn { white-space: nowrap; flex-shrink: 0; }
/* Expand toggle */
.pricing-expand-btn {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  margin: 28px auto 0; padding: 10px 24px; border-radius: 100px;
  font-size: 0.875rem; font-weight: 600; color: var(--color-text-secondary);
  background: var(--color-surface); border: 1px solid var(--color-border);
  cursor: pointer; transition: all var(--transition);
}
.pricing-expand-btn:hover { color: var(--color-blue); border-color: var(--color-blue); }
.pricing-expand-btn svg { transition: transform 0.3s; }
.pricing-expand-btn.expanded svg { transform: rotate(180deg); }
.pricing-more {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease;
}
.pricing-more.pricing-more-open { max-height: 800px; opacity: 1; }
.pricing-free-note { text-align: center; margin-top: 24px; font-size: 0.875rem; color: var(--color-text-secondary); }
.pricing-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: 32px; position: relative;
  display: flex; flex-direction: column; transition: box-shadow 0.3s, transform 0.3s;
}
.pricing-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.pricing-card-pop {
  border-color: var(--color-blue); border-width: 2px;
  box-shadow: 0 4px 24px rgba(13,136,241,0.12);
}
.pricing-pop-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-blue-light), var(--color-blue));
  color: #fff; font-size: 0.75rem; font-weight: 600; padding: 4px 16px;
  border-radius: 100px; white-space: nowrap;
}
.pricing-header { margin-bottom: 24px; }
.pricing-header h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 8px; }
.pricing-amount { display: flex; align-items: baseline; gap: 2px; margin-bottom: 6px; }
.pa-currency { font-size: 1.25rem; font-weight: 600; color: var(--color-text-secondary); }
.pa-value { font-size: 2.75rem; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.pa-period { font-size: 0.875rem; color: var(--color-text-tertiary); margin-left: 4px; }
.pricing-desc { font-size: 0.875rem; color: var(--color-text-secondary); }
.pricing-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; flex: 1; }
.pricing-features li {
  font-size: 0.875rem; color: var(--color-text-secondary); padding-left: 24px;
  position: relative; line-height: 1.5;
}
.pricing-features li::before {
  content: ''; position: absolute; left: 0; top: 5px; width: 16px; height: 16px;
  background: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20 6L9 17l-5-5' stroke='%230d88f1' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
}
.pricing-card .btn { width: 100%; text-align: center; }
.tag-soon {
  display: inline-flex; font-size: 0.625rem; font-weight: 600;
  background: rgba(224,138,44,0.1); color: var(--color-orange);
  padding: 1px 6px; border-radius: 100px; margin-left: 6px;
  text-transform: uppercase; letter-spacing: 0.04em;
}

/* Trust bar */
.trust-bar {
  display: flex; justify-content: center; gap: 32px; margin-top: 32px;
  flex-wrap: wrap;
}
.trust-item {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.8125rem; font-weight: 500; color: var(--color-text-secondary);
}
.trust-item svg { color: var(--color-green); flex-shrink: 0; }

/* --- Final CTA --- */
.final-cta { padding: 100px 0; }
.final-cta-inner {
  background: var(--color-navy); border-radius: var(--radius-xl); padding: 80px 48px;
  text-align: center; position: relative; overflow: hidden;
}
.cta-dots {
  position: absolute; inset: 0; opacity: 0.04;
  background-image: radial-gradient(circle, #fff 1px, transparent 1px);
  background-size: 24px 24px;
}
.final-cta-inner h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem); font-weight: 700; color: #fff;
  line-height: 1.2; margin-bottom: 16px; position: relative;
}
.final-cta-inner h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; color: var(--color-blue-light); }
.final-cta-inner p { font-size: 1.0625rem; color: rgba(255,255,255,0.6); margin-bottom: 32px; position: relative; }
.final-cta-inner .btn { position: relative; }

/* --- Footer --- */
.footer { padding: 48px 0; border-top: 1px solid var(--color-border-light); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 32px; }
.footer-brand { max-width: 240px; }
.footer-logo-img { height: 28px; width: auto; display: block; }
.footer-tagline { font-size: 0.8125rem; color: var(--color-text-tertiary); margin-top: 8px; }
.footer-links { display: flex; gap: 64px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col h4 { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-tertiary); margin-bottom: 4px; }
.footer-col a { font-size: 0.875rem; color: var(--color-text-secondary); transition: color var(--transition); }
.footer-col a:hover { color: var(--color-text); }
.footer-bottom { font-size: 0.75rem; color: var(--color-text-tertiary); border-top: 1px solid var(--color-border-light); padding-top: 24px; }

/* --- Legal Pages --- */
.legal-page { padding: 120px 0 80px; max-width: 680px; margin: 0 auto; }
.legal-page h1 { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.legal-updated { font-size: 0.875rem; color: var(--color-text-tertiary); margin-bottom: 40px; }
.legal-page h2 { font-size: 1.25rem; font-weight: 600; margin-top: 32px; margin-bottom: 12px; }
.legal-page p { color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 16px; }
.legal-page a { color: var(--color-blue); text-decoration: underline; }

/* --- Animations --- */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero .container { flex-direction: column; gap: 48px; }
  .hero-content { flex: none; max-width: 560px; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-wide { grid-column: span 2; flex-direction: column; }
  .bento-wide-reverse { flex-direction: column-reverse; }
  .bento-small { grid-column: span 1; }
  .flow-visual { grid-template-columns: 1fr; gap: 16px; }
  .flow-col-engine { flex-direction: column; }
  .flow-arrow-in, .flow-arrow-out { transform: rotate(90deg); padding: 8px 0; }
  .calc-card { flex-direction: column; gap: 32px; }
  .calc-divider { width: 100%; height: 1px; }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-row-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-logo-img { height: 32px; }
  .hero { padding: 110px 0 60px; }
  .hero h1 { font-size: 1.75rem; }
  .bento { grid-template-columns: 1fr; }
  .bento-wide, .bento-small { grid-column: span 1; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); max-width: 520px; }
  .pricing-row-2 { grid-template-columns: repeat(2, 1fr); max-width: 520px; }
  .pricing-enterprise { flex-direction: column; text-align: center; padding: 28px 24px; }
  .pricing-enterprise-features { justify-content: center; }
  .footer-inner { flex-direction: column; gap: 32px; }
  .footer-links { gap: 40px; }
  .final-cta-inner { padding: 48px 24px; }
  .calc-card { padding: 32px 24px; }
  .mockup-body { flex-direction: column; }
  .mockup-img-col { flex: none; }
  .hero-type-label { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section-header { margin-bottom: 40px; }
  .msg-type-card { flex: 0 0 220px; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 360px; }
  .pricing-row-2 { grid-template-columns: 1fr; max-width: 360px; }
}