/* WhereKin v1 — warm paper / travel editorial */
:root {
  --ink: #1a221c;
  --ink-soft: #2e3a32;
  --muted: #5f6b60;
  --paper: #f2ebe0;
  --paper-deep: #e8dfd0;
  --card: #fffdf8;
  --line: #d9cfbf;
  --line-soft: #e6ddd0;
  --sea: #1e4a4f;
  --sea-mid: #2f6a6f;
  --sea-soft: #e2eeef;
  --sand: #b8894a;
  --sand-soft: #f3e6d0;
  --coral: #a85a3a;
  --viral: #8a5a3a;
  --local: #1e4a4f;
  --shadow: 0 18px 40px rgba(30, 40, 32, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1080px;
  --narrow: 680px;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC",
    "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 8% -8%, #d6e4df 0%, transparent 55%),
    radial-gradient(700px 380px at 100% 12%, #f0e2c8 0%, transparent 50%),
    linear-gradient(180deg, #f5f0e6 0%, var(--paper) 40%, #efe7d8 100%);
  font: 17px/1.65 var(--font-serif);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--sea); text-underline-offset: 3px; }
a:hover { color: var(--sea-mid); }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--sea);
  color: #fff;
  padding: 8px 12px;
  z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

.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;
}

.wrap {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}
.wrap.narrow,
.narrow { width: min(100% - 40px, var(--narrow)); margin-inline: auto; }

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: rgba(242, 235, 224, 0.86);
  border-bottom: 1px solid rgba(217, 207, 191, 0.7);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 650;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background:
    linear-gradient(135deg, var(--sea) 0 55%, transparent 55%),
    linear-gradient(315deg, var(--sand) 0 48%, transparent 48%),
    var(--paper-deep);
  border: 1px solid var(--line);
  box-shadow: inset 0 0 0 2px #fff8;
}
.brand-name { font-size: 15px; }
.nav {
  display: flex;
  align-items: center;
  gap: 4px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
}
.nav a:hover { color: var(--ink); }
.nav-cta {
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--sea);
  color: #fff !important;
}
.nav-cta:hover { background: var(--sea-mid); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--sea);
  color: #fff;
}
.btn-primary:hover { background: var(--sea-mid); color: #fff; }
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-soft);
}
.btn-ghost:hover {
  border-color: var(--sea);
  color: var(--sea);
}

/* Hero */
.hero {
  padding: 56px 0 40px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: center;
}
.eyebrow,
.section-eyebrow,
.kicker,
.card-kicker {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: none;
  color: var(--sand);
  font-weight: 600;
}
.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(32px, 5.2vw, 52px);
  line-height: 1.18;
  letter-spacing: -0.03em;
  font-weight: 700;
}
.hero-sub {
  margin: 0 0 18px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 15px;
  letter-spacing: 0.01em;
}
.lede {
  margin: 0 0 24px;
  color: var(--ink-soft);
  max-width: 34em;
  font-size: 18px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}
.hero-note {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  box-shadow: var(--shadow);
  position: relative;
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: 10px auto auto 10px;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--sea), var(--sand));
}
.card-title {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: -0.02em;
}
.card-analogy {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 16px;
}
.score-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.score {
  border-radius: var(--radius-sm);
  padding: 12px;
  background: var(--sea-soft);
}
.score.viral { background: var(--sand-soft); }
.score-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}
.score-num {
  display: block;
  font-family: var(--font-sans);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--local);
  letter-spacing: -0.03em;
}
.score.viral .score-num { color: var(--viral); }
.score-hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}
.demo-tag {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--muted);
}

/* Sections */
.section {
  padding: 64px 0;
}
.section-head {
  margin-bottom: 28px;
  max-width: 40em;
}
.section h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.25;
  letter-spacing: -0.025em;
}
.section-lede {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.section-why {
  background: rgba(255, 253, 248, 0.55);
  border-block: 1px solid var(--line-soft);
}
.section-why p { color: var(--ink-soft); }
.section-why blockquote {
  margin: 22px 0;
  padding: 18px 20px;
  border-left: 3px solid var(--sand);
  background: var(--sand-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink);
  font-size: 18px;
}

/* Layers */
.layers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.layer {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px 20px;
  box-shadow: 0 8px 24px rgba(30, 40, 32, 0.04);
}
.layer-num {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--sand);
  margin-bottom: 10px;
}
.layer h3 {
  margin: 0 0 10px;
  font-size: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}
.layer-en {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}
.layer p { margin: 0 0 12px; color: var(--ink-soft); font-size: 16px; }
.layer-example {
  margin: 0 !important;
  padding: 12px 14px;
  background: var(--sea-soft);
  border-radius: var(--radius-sm);
  color: var(--sea) !important;
  font-size: 15px !important;
}
.layer-note {
  margin: 0 !important;
  font-family: var(--font-sans);
  font-size: 13px !important;
  color: var(--coral) !important;
}
.signal-list,
.decision-list {
  margin: 0 0 12px;
  padding-left: 1.1em;
  color: var(--ink-soft);
  font-size: 15px;
}
.signal-list li,
.decision-list li { margin-bottom: 4px; }

/* Example */
.section-example { padding-top: 48px; }
.example-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.example-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 16px 22px;
  background: linear-gradient(90deg, var(--sea-soft), var(--sand-soft));
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-sans);
}
.pill {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-soft);
}
.arrow { color: var(--muted); font-size: 18px; }
.example-body { padding: 24px 22px 8px; }
.example-place h3 {
  margin: 0 0 8px;
  font-size: 28px;
}
.example-place .muted {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
}
.analogy {
  margin: 0 0 22px;
  color: var(--ink-soft);
  max-width: 40em;
}

.meters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 22px;
}
.meter {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--sea-soft);
}
.meter-viral { background: var(--sand-soft); }
.meter-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-sans);
  margin-bottom: 8px;
}
.meter-head span { font-size: 13px; color: var(--muted); }
.meter-head strong {
  font-size: 28px;
  letter-spacing: -0.03em;
  color: var(--local);
}
.meter-viral .meter-head strong { color: var(--viral); }
.bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.7);
  overflow: hidden;
  margin-bottom: 8px;
}
.bar i {
  display: block;
  height: 100%;
  width: var(--w, 50%);
  border-radius: inherit;
  background: var(--sea);
}
.meter-viral .bar i { background: var(--viral); }
.meter p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  font-family: var(--font-sans);
}

.example-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding-bottom: 8px;
}
.example-grid ul {
  margin: 8px 0 0;
  padding-left: 1.15em;
  color: var(--ink-soft);
  font-size: 15px;
}
.example-grid li { margin-bottom: 6px; }
.demo-banner {
  margin: 0;
  padding: 12px 22px;
  background: #f7f1e4;
  border-top: 1px dashed var(--line);
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--viral);
}

/* Taglines */
.section-lines {
  background: rgba(30, 74, 79, 0.04);
  border-block: 1px solid var(--line-soft);
}
.taglines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.taglines li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 18px;
}
.tag-mark {
  color: var(--sand);
  font-weight: 700;
  line-height: 1.4;
}

/* Moat */
.moat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 22px;
}
.moat-grid article {
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.moat-grid h3 {
  margin: 0 0 6px;
  font-size: 18px;
}
.moat-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* Waitlist */
.section-waitlist {
  padding-bottom: 72px;
}
.waitlist-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 12px;
}
.waitlist-form input {
  flex: 1 1 220px;
  min-width: 0;
  font: inherit;
  font-family: var(--font-sans);
  padding: 13px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  outline: none;
}
.waitlist-form input:focus {
  border-color: var(--sea);
  box-shadow: 0 0 0 3px rgba(30, 74, 79, 0.12);
}
.waitlist-form .btn { flex: 0 0 auto; border: none; }
.form-alt {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--muted);
}
.toast {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--sea);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 14px;
  box-shadow: var(--shadow);
  animation: toast-in 0.28s ease;
}
.toast[hidden] { display: none; }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  background: #ebe3d5;
  padding: 36px 0 40px;
  font-family: var(--font-sans);
}
.footer-inner {
  display: grid;
  gap: 16px;
}
.footer strong {
  font-size: 16px;
  letter-spacing: 0.02em;
}
.footer p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.footer-note { margin-top: 8px !important; font-size: 13px !important; }

/* Responsive */
@media (max-width: 880px) {
  .hero-grid,
  .layers,
  .meters,
  .example-grid {
    grid-template-columns: 1fr;
  }
  .nav a:not(.nav-cta) { display: none; }
  .hero { padding-top: 36px; }
  .section { padding: 48px 0; }
}

@media (max-width: 480px) {
  .wrap { width: min(100% - 28px, var(--max)); }
  .hero h1 { font-size: 30px; }
  .score-row { grid-template-columns: 1fr 1fr; }
  .taglines li { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .toast { transition: none; animation: none; }
}