:root {
  --ink: #112F2D;
  --ink-soft: #4A5D59;
  --orange: #FF6B35;
  --paper: #F3F5F1;
  --white: #FFFFFF;
  --line: #DDE3DF;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
}

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

h1, h2, h3 { letter-spacing: -0.03em; line-height: 1.1; margin: 0; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }

a { color: inherit; }

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: -0.04em;
  text-decoration: none;
  color: var(--ink);
}
.logo-mark { width: 1.3em; height: 1.3em; color: var(--ink); }
.logo-light, .logo-light .logo-mark { color: var(--paper); }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(243, 245, 241, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; font-weight: 500; color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.1s, background 0.2s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--orange); color: var(--white); padding: 0 32px; font-size: 1.05rem; }
.btn-primary:hover { background: #F25A22; }
.nav-links .btn-small { background: var(--ink); color: var(--paper); padding: 10px 18px; }
.nav-links .btn-small:hover { color: var(--white); }

/* Hero */
.hero { padding: 96px 0 80px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin: 0 0 16px;
}
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; max-width: 14ch; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 46ch; margin: 20px 0 40px; }

/* Search */
.search {
  display: grid;
  grid-template-columns: 1fr auto 1fr 220px auto;
  gap: 8px;
  background: var(--white);
  padding: 8px;
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(17, 47, 45, 0.1);
  align-items: stretch;
}
.field {
  display: flex;
  flex-direction: column;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--paper);
}
.field span { font-size: 0.75rem; font-weight: 600; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }
.field input {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  outline: none;
  padding: 2px 0 0;
  min-width: 0;
}
.field:focus-within { box-shadow: inset 0 0 0 2px var(--ink); }
.swap {
  border: 0;
  background: transparent;
  font-size: 1.3rem;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0 4px;
}
.swap:hover { color: var(--orange); }

/* Results */
.results { padding-bottom: 64px; }
.results-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.note { color: var(--ink-soft); font-size: 0.9rem; margin: 8px 0 24px; }
.sort { display: flex; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 8px 16px;
  font: inherit;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
}
.chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.result-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.result {
  display: grid;
  grid-template-columns: 56px 1fr repeat(3, 120px);
  align-items: center;
  gap: 16px;
  background: var(--white);
  border: 2px solid transparent;
  border-radius: var(--radius);
  padding: 20px 24px;
  animation: rise 0.35s ease both;
}
.result.best { border-color: var(--orange); position: relative; }
.result.best::before {
  content: "Fair pick";
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--orange);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 999px;
}
.result-icon { font-size: 1.8rem; width: 56px; height: 56px; border-radius: 14px; background: var(--paper); display: grid; place-items: center; }
.result-name { font-weight: 700; font-size: 1.1rem; }
.result-detail { color: var(--ink-soft); font-size: 0.9rem; }
.metric { text-align: right; }
.metric small { display: block; color: var(--ink-soft); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.metric strong { font-size: 1.15rem; }
.metric.price strong { font-size: 1.5rem; }

@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* How */
.how { padding: 80px 24px; }
.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.steps li { background: var(--white); border-radius: var(--radius); padding: 28px; }
.steps p { color: var(--ink-soft); margin: 8px 0 0; }
.step-num {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--white);
  font-weight: 800;
  margin-bottom: 16px;
}

/* Modes */
.modes { background: var(--ink); color: var(--paper); padding: 80px 0; }
.mode-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
.mode-card { background: rgba(255, 255, 255, 0.06); border-radius: var(--radius); padding: 28px; }
.mode-card p { color: rgba(243, 245, 241, 0.7); margin: 8px 0 0; }
.mode-icon { font-size: 2rem; margin-bottom: 12px; }

/* About */
.about { padding: 96px 24px; }
.about-inner { display: flex; align-items: center; gap: 48px; }
.about-mark { width: 180px; height: 180px; flex-shrink: 0; color: var(--ink); }
.about p { color: var(--ink-soft); font-size: 1.15rem; max-width: 52ch; margin: 16px 0 0; }

/* Footer */
.footer { background: var(--ink); color: rgba(243, 245, 241, 0.7); padding: 40px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer p { margin: 0; }

/* Responsive */
@media (max-width: 900px) {
  .search { grid-template-columns: 1fr; }
  .swap { display: none; }
  .btn-primary { padding: 16px; }
  .result { grid-template-columns: 48px 1fr; }
  .metric { text-align: left; grid-column: span 1; }
  .steps, .mode-grid { grid-template-columns: 1fr 1fr; }
  .nav-links a:not(.btn) { display: none; }
}
@media (max-width: 600px) {
  .steps, .mode-grid { grid-template-columns: 1fr; }
  .about-inner { flex-direction: column; align-items: flex-start; }
  .about-mark { width: 120px; height: 120px; }
}