:root {
  --bg: #f4efe6;
  --ink: #1c1917;
  --muted: #57534e;
  --card: #fffdf8;
  --line: #e7dfd2;
  --accent: #c2410c;
  --accent-dark: #9a3412;
  --leaf: #3f6212;
  --leaf-soft: #ecfccb;
  --shadow: 0 18px 50px rgba(68, 44, 20, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(900px 420px at 100% -10%, rgba(194, 65, 12, 0.12), transparent 55%),
    radial-gradient(700px 380px at -10% 20%, rgba(63, 98, 18, 0.12), transparent 50%),
    var(--bg);
  color: var(--ink);
  line-height: 1.55;
}
a { color: var(--accent-dark); }
img { max-width: 100%; }

.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(244, 239, 230, 0.88);
  border-bottom: 1px solid rgba(231, 223, 210, 0.9);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; font-weight: 750; letter-spacing: -0.03em; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--ink); color: #fff;
}
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav a {
  text-decoration: none; color: var(--muted); font-size: 0.88rem; font-weight: 650;
  padding: 8px 10px; border-radius: 999px;
}
.nav a:hover, .nav a.active { color: var(--ink); background: #fff; }

.hero { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 22px; padding: 34px 0 10px; align-items: start; }
.kicker {
  display: inline-flex; gap: 8px; align-items: center;
  background: var(--leaf-soft); color: var(--leaf);
  border-radius: 999px; padding: 6px 12px; font-size: 0.78rem; font-weight: 750;
}
h1 { font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.05; letter-spacing: -0.045em; margin: 12px 0 10px; }
.lede { color: var(--muted); font-size: 1.05rem; max-width: 38rem; margin: 0 0 18px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: block; font-size: 0.78rem; font-weight: 750; margin-bottom: 6px; }
input, select {
  width: 100%; border: 1px solid var(--line); background: #fff;
  border-radius: 12px; padding: 12px 12px; font: inherit; color: inherit;
}
.field { margin-bottom: 12px; }
.result {
  background: var(--ink); color: #fff; border: 0; min-height: 100%;
}
.result h2 { margin: 0 0 6px; font-size: 1rem; font-weight: 650; color: #fdba74; }
.result .kcal { font-size: 3rem; letter-spacing: -0.05em; font-weight: 760; line-height: 1; }
.result .unit { color: #d6d3d1; font-size: 0.92rem; margin-bottom: 16px; }
.stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat { background: rgba(255,255,255,0.08); border-radius: 14px; padding: 12px; }
.stat b { display: block; font-size: 1.35rem; letter-spacing: -0.03em; }
.stat span { color: #d6d3d1; font-size: 0.78rem; }
.note { margin: 14px 0 0; color: #e7e5e4; font-size: 0.82rem; }

.section { padding: 28px 0; }
.section h2 { letter-spacing: -0.03em; margin: 0 0 8px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.guide-card {
  display: block; text-decoration: none; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px;
}
.guide-card:hover { border-color: #fdba74; transform: translateY(-2px); }
.guide-card strong { display: block; margin-bottom: 6px; }
.guide-card span { color: var(--muted); font-size: 0.9rem; }

.prose { max-width: 760px; }
.prose p, .prose li { color: var(--muted); }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; margin-bottom: 8px; }
.faq summary { cursor: pointer; font-weight: 720; }
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 16px; overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
th { background: #fff7ed; }

.site-footer { border-top: 1px solid var(--line); padding: 22px 0 40px; color: var(--muted); font-size: 0.86rem; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.footer-links a { color: var(--muted); }

@media (max-width: 860px) {
  .hero, .cards, .grid-2, .stat-row { grid-template-columns: 1fr; }
  .hero { display: flex; flex-direction: column; }
  .result { order: -1; }
  .nav { width: 100%; }
  .header-inner { flex-wrap: wrap; padding: 10px 0; }
}