:root {
  --bg: #f8f4ee;
  --surface: #fffaf4;
  --surface-strong: #ffffff;
  --ink: #17110d;
  --muted: #6f6257;
  --line: #e4d8cd;
  --line-strong: #d0c0b2;
  --accent: #3a261b;
  --accent-2: #8f684e;
  --accent-3: #e7d2bd;
  --success: #305c3c;
  --warning: #885c19;
  --danger: #8a2d22;
  --shadow: 0 24px 80px rgba(43, 28, 18, 0.12);
  --shadow-soft: 0 14px 45px rgba(43, 28, 18, 0.08);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 11px;
  --max: 1180px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(231,210,189,0.65), transparent 32rem),
    linear-gradient(180deg, #fbf7f1 0%, var(--bg) 44%, #f4eee7 100%);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.45;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(248,244,238,0.83);
  border-bottom: 1px solid rgba(228,216,205,0.8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(18px, 4vw, 44px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.03em; }
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fffaf4;
  box-shadow: var(--shadow-soft);
}
.brand-text { font-size: 1.1rem; }
.tm { font-size: 0.65em; margin-left: 1px; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  padding: 10px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 650;
  font-size: 0.94rem;
}
.main-nav a:hover, .main-nav a.active { background: rgba(58,38,27,0.08); color: var(--ink); }
.nav-toggle { display: none; border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 9px 13px; }

main { flex: 1; }
.page { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; padding: 42px 0 72px; }
.page-narrow { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 42px 0 72px; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  gap: 28px;
  align-items: stretch;
  padding: 28px 0 46px;
}
.hero-card, .panel, .card, .quiz-card, .result-hero, .stack-page-card {
  background: rgba(255,250,244,0.76);
  border: 1px solid rgba(228,216,205,0.9);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
}
.hero-copy { padding: clamp(26px, 5vw, 58px); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.55);
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
h1, h2, h3, h4 { letter-spacing: -0.055em; line-height: 0.98; margin: 0; }
h1 { font-size: clamp(3.1rem, 8vw, 6.8rem); max-width: 880px; }
h2 { font-size: clamp(2.25rem, 5vw, 4.2rem); }
h3 { font-size: clamp(1.45rem, 2.7vw, 2.2rem); }
h4 { font-size: 1.08rem; letter-spacing: -0.03em; }
p { margin: 0; color: var(--muted); }
.lede { font-size: clamp(1.06rem, 2vw, 1.3rem); max-width: 680px; margin-top: 20px; }
.hero-actions, .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 28px; }
.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 18px;
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: #fffaf4; box-shadow: var(--shadow-soft); }
.btn-secondary { background: var(--surface-strong); border-color: var(--line); color: var(--ink); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--accent); }
.btn-small { padding: 9px 12px; min-height: 38px; font-size: 0.9rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; }

.hero-preview { padding: 22px; display: flex; flex-direction: column; justify-content: space-between; min-height: 550px; overflow: hidden; position: relative; }
.hero-preview:before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 10%, rgba(143,104,78,0.18), transparent 22rem);
  pointer-events: none;
}
.phone-mock {
  position: relative;
  background: #16100c;
  color: #fffaf4;
  border-radius: 38px;
  padding: 14px;
  box-shadow: var(--shadow);
  max-width: 360px;
  width: 100%;
  margin: auto;
}
.phone-screen { background: #fffaf4; color: var(--ink); min-height: 505px; border-radius: 27px; padding: 18px; overflow: hidden; }
.mini-stack-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.mini-stack-title b { letter-spacing: -0.04em; }
.match-pill { background: #e8f1e9; color: var(--success); border-radius: 999px; padding: 6px 9px; font-size: 0.76rem; font-weight: 850; }
.mini-step { display: grid; grid-template-columns: 34px 1fr; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: 17px; margin-bottom: 10px; background: #fff; }
.mini-num { width: 34px; height: 34px; border-radius: 12px; background: var(--accent-3); display: grid; place-items: center; font-weight: 900; }
.mini-step p { font-size: 0.82rem; margin-top: 3px; }

.stats-grid, .feature-grid, .card-grid, .product-grid, .stack-grid, .creator-grid, .metric-grid {
  display: grid;
  gap: 16px;
}
.stats-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 6px 0 44px; }
.stat { padding: 20px; border-radius: var(--radius-lg); background: rgba(255,255,255,0.57); border: 1px solid var(--line); }
.stat strong { font-size: 2.3rem; line-height: 1; letter-spacing: -0.06em; display: block; }
.stat span { color: var(--muted); font-size: 0.92rem; }
.feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 22px; }
.card p { margin-top: 9px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 44px 0 18px; }
.section-head p { max-width: 620px; margin-top: 10px; }

.panel { padding: clamp(20px, 3vw, 32px); }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pill, .tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 7px 10px;
  background: rgba(58,38,27,0.07);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
}
.tag-muted { background: rgba(111,98,87,0.09); color: var(--muted); }
.tag-success { background: rgba(48,92,60,0.11); color: var(--success); }
.tag-warning { background: rgba(136,92,25,0.12); color: var(--warning); }

.quiz-layout { display: grid; grid-template-columns: 300px 1fr; gap: 18px; align-items: start; }
.quiz-sidebar { position: sticky; top: 88px; }
.progress-ring { width: 100%; height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; margin: 18px 0 14px; }
.progress-fill { height: 100%; background: var(--ink); border-radius: inherit; width: 0%; transition: width 0.2s ease; }
.quiz-card { padding: clamp(22px, 4vw, 42px); min-height: 540px; }
.question-kicker { color: var(--accent-2); font-weight: 900; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.11em; margin-bottom: 12px; }
.option-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 24px; }
.option-btn {
  text-align: left;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 17px;
  min-height: 88px;
}
.option-btn:hover, .option-btn.selected { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(58,38,27,0.08); }
.option-btn strong { display: block; font-size: 1.02rem; letter-spacing: -0.03em; }
.option-btn span { display: block; color: var(--muted); margin-top: 4px; font-size: 0.9rem; }
.input-row { display: grid; gap: 8px; margin-top: 22px; }
.input-row label { font-weight: 850; }
.input, .select, .textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 13px 14px;
  background: #fff;
  color: var(--ink);
}
.textarea { min-height: 115px; resize: vertical; }
.quiz-controls { display: flex; justify-content: space-between; gap: 12px; margin-top: 30px; }

.result-hero { padding: clamp(24px, 4vw, 44px); display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: center; }
.score-card { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 22px; }
.score { font-size: 4rem; font-weight: 950; line-height: 0.9; letter-spacing: -0.08em; }
.stack-steps { display: grid; gap: 14px; margin-top: 22px; }
.stack-step-card { display: grid; grid-template-columns: 48px 1fr; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 16px; }
.step-index { width: 48px; height: 48px; border-radius: 17px; background: var(--accent-3); display: grid; place-items: center; font-weight: 950; }
.step-meta { display: flex; flex-wrap: wrap; gap: 7px; margin: 10px 0; }
.product-mini { display: flex; align-items: center; gap: 12px; margin-top: 14px; padding: 12px; border-radius: 18px; background: rgba(248,244,238,0.84); }
.product-thumb { width: 58px; height: 58px; object-fit: cover; border-radius: 16px; background: var(--line); }

.filters { display: grid; grid-template-columns: 1.5fr repeat(4, minmax(125px, 1fr)); gap: 10px; margin: 18px 0; }
.product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.product-card, .stack-card, .creator-card {
  background: #fffaf4;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
}
.product-card-image { aspect-ratio: 4/3; object-fit: cover; background: var(--line); }
.product-card-body, .stack-card-body, .creator-card-body { padding: 17px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-brand { color: var(--accent-2); font-weight: 900; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; }
.product-title { font-size: 1.18rem; font-weight: 900; letter-spacing: -0.04em; }
.card-footer { display: flex; gap: 8px; margin-top: auto; }
.stack-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stack-cover { min-height: 170px; background: linear-gradient(135deg, rgba(58,38,27,0.95), rgba(143,104,78,0.8)); color: #fffaf4; padding: 20px; display: flex; flex-direction: column; justify-content: flex-end; }
.stack-cover h3 { font-size: 1.8rem; }
.stack-page-card { overflow: hidden; }
.stack-page-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) 360px; gap: 20px; padding: clamp(22px, 4vw, 42px); align-items: stretch; }
.stack-summary { background: var(--ink); color: #fffaf4; border-radius: 26px; padding: 22px; }
.stack-summary p, .stack-summary .tag { color: rgba(255,250,244,0.82); }
.stack-summary .tag { background: rgba(255,250,244,0.11); }

.creator-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.avatar { width: 74px; height: 74px; border-radius: 24px; object-fit: cover; background: var(--line); }
.creator-head { display: flex; gap: 13px; align-items: center; }

.metric-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric { padding: 18px; border-radius: 20px; border: 1px solid var(--line); background: #fff; }
.metric strong { display: block; font-size: 1.9rem; letter-spacing: -0.06em; }
.table-wrap { overflow-x: auto; border-radius: 18px; border: 1px solid var(--line); background: #fff; margin-top: 14px; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { text-align: left; padding: 13px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.09em; color: var(--accent-2); }
tr:last-child td { border-bottom: 0; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.check-list { list-style: none; padding: 0; margin: 15px 0 0; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 28px; color: var(--muted); }
.check-list li:before { content: "✓"; position: absolute; left: 0; top: -1px; color: var(--success); font-weight: 900; }
.notice { border: 1px solid var(--line); background: rgba(255,255,255,0.56); border-radius: 18px; padding: 15px; color: var(--muted); }
.empty-state { text-align: center; padding: 56px 20px; border: 1px dashed var(--line-strong); border-radius: var(--radius-xl); }
.site-footer { border-top: 1px solid var(--line); padding: 34px clamp(18px, 4vw, 44px); display: flex; justify-content: space-between; gap: 20px; color: var(--muted); }
.site-footer strong { color: var(--ink); }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; font-weight: 750; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fffaf4; padding: 12px 16px; border-radius: 999px; box-shadow: var(--shadow); z-index: 99; font-weight: 750; animation: toastIn 0.18s ease; }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }

@media (max-width: 920px) {
  .hero, .quiz-layout, .result-hero, .stack-page-hero, .split { grid-template-columns: 1fr; }
  .hero-preview { min-height: auto; }
  .stats-grid, .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-grid, .product-grid, .stack-grid, .creator-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters { grid-template-columns: 1fr 1fr; }
  .quiz-sidebar { position: static; }
}

@media (max-width: 680px) {
  .site-header { align-items: flex-start; }
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: fixed;
    right: 16px;
    top: 66px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: min(280px, calc(100vw - 32px));
    background: rgba(255,250,244,0.97);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
    padding: 9px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { border-radius: 14px; }
  .page, .page-narrow { width: min(100% - 22px, var(--max)); padding-top: 26px; }
  h1 { font-size: clamp(2.65rem, 16vw, 4.3rem); }
  .hero-copy, .panel, .quiz-card { padding: 21px; }
  .option-grid, .product-grid, .stack-grid, .creator-grid, .feature-grid { grid-template-columns: 1fr; }
  .filters { grid-template-columns: 1fr; }
  .stats-grid, .metric-grid { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; }
  .card-footer { flex-direction: column; }
  .btn { width: 100%; }
}