:root {
  --bg: #f7fbf8;
  --surface: #ffffff;
  --ink: #14232a;
  --muted: #5f6f66;
  --line: #dbe8df;
  --accent: #2f9d55;
  --accent-dark: #166534;
  --soft: #e9f6ed;
  --soft-2: #f2f5f3;
  --shadow: 0 18px 44px rgba(20, 35, 42, 0.08);
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Inter, Avenir, "Segoe UI", Arial, sans-serif; line-height: 1.6; }
a { color: inherit; }
.skip-link { position: absolute; left: -999px; top: 1rem; background: var(--ink); color: #fff; padding: .7rem 1rem; z-index: 99; }
.skip-link:focus { left: 1rem; }
.site-header { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem clamp(1rem, 3vw, 2.25rem); background: rgba(247,251,248,.92); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; font-weight: 800; color: var(--ink); }
.brand img { width: 132px; height: auto; object-fit: contain; }
.brand span { white-space: nowrap; }
.site-nav { display: flex; gap: .3rem; align-items: center; flex-wrap: wrap; }
.site-nav a { text-decoration: none; color: var(--muted); padding: .55rem .75rem; border-radius: 8px; font-weight: 700; }
.site-nav a:hover, .site-nav a:focus-visible, .site-nav a[aria-current="page"] { color: var(--accent-dark); background: var(--soft); }
.nav-toggle { display: none; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 8px; padding: .6rem .75rem; font-weight: 800; }
.hero { position: relative; min-height: calc(100svh - 74px); display: grid; align-items: center; overflow: hidden; padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 4rem); background: linear-gradient(120deg, #fbfefc 0%, #f0f8f2 58%, #dff3e6 100%); border-bottom: 1px solid var(--line); }
.hero-inner { width: min(720px, 100%); position: relative; z-index: 2; }
.hero-mark { position: absolute; right: clamp(-5rem, -6vw, 2rem); top: 50%; transform: translateY(-50%); opacity: .18; width: min(48vw, 620px); pointer-events: none; }
.hero-mark img { width: 100%; height: auto; filter: saturate(1.1); }
.eyebrow { margin: 0 0 .75rem; color: var(--accent-dark); text-transform: uppercase; font-size: .76rem; font-weight: 900; letter-spacing: 0; }
h1, h2, h3 { line-height: 1.08; margin: 0; color: var(--ink); letter-spacing: 0; }
h1 { font-size: clamp(2.4rem, 6vw, 5.15rem); max-width: 820px; }
h2 { font-size: clamp(1.65rem, 3vw, 2.7rem); }
h3 { font-size: 1.05rem; }
.deck { font-size: clamp(1.08rem, 2vw, 1.38rem); color: var(--muted); max-width: 680px; margin: 1.1rem 0 0; }
.section { padding: clamp(3rem, 6vw, 5.5rem) clamp(1rem, 4vw, 3rem); }
.section-inner { width: min(var(--max), 100%); margin: 0 auto; }
.section-head { max-width: 760px; margin-bottom: 1.4rem; }
.section-head p { color: var(--muted); font-size: 1.04rem; }
.band { background: #fff; border-block: 1px solid var(--line); }
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(1.6rem, 4vw, 4rem); align-items: start; }
.grid { display: grid; gap: 1rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 1.2rem; box-shadow: var(--shadow); }
.card p, .plain-list, .section p, li { color: var(--muted); }
.plain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .85rem; }
.plain-list li { border-top: 1px solid var(--line); padding-top: .85rem; }
.signal { display: grid; gap: .5rem; padding: 1.1rem 0; border-top: 1px solid var(--line); }
.signal strong { color: var(--accent-dark); }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.4rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: .78rem 1rem; border-radius: 8px; text-decoration: none; font-weight: 850; border: 1px solid transparent; }
.button.primary { background: var(--accent-dark); color: white; }
.button.secondary { background: white; border-color: var(--line); color: var(--accent-dark); }
.button.text { color: var(--accent-dark); padding-left: 0; }
.guide { background: var(--ink); color: white; border-radius: 8px; padding: 1.25rem; }
.guide h2, .guide h3 { color: white; }
.guide p, .guide label { color: #d7e5dc; }
.guide label { display: grid; gap: .35rem; margin: 1rem 0; font-weight: 700; }
.guide input[type=range] { width: 100%; accent-color: var(--accent); }
.result-box { margin-top: 1rem; padding: 1rem; border: 1px solid rgba(255,255,255,.22); border-radius: 8px; }
.metric { font-size: 2rem; font-weight: 900; color: #9be7af; }
.note { border-left: 4px solid var(--accent); padding: 1rem 1.1rem; background: var(--soft); border-radius: 8px; color: var(--muted); }
.site-footer { background: #132229; color: white; padding: 2.5rem clamp(1rem, 4vw, 3rem); }
.footer-inner { width: min(var(--max), 100%); margin: 0 auto; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 1.5rem; }
.footer-inner a { display: block; color: #dbe8df; text-decoration: none; margin: .3rem 0; }
.footer-inner p { color: #c7d3cc; }
.footer-brand img { filter: brightness(1.5); }
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .site-nav { position: absolute; left: 1rem; right: 1rem; top: calc(100% + .5rem); display: none; flex-direction: column; align-items: stretch; padding: .8rem; background: white; border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); }
  .site-nav[data-open="true"] { display: flex; }
  .brand img { width: 106px; }
  .hero { min-height: auto; padding-top: 4rem; padding-bottom: 4rem; }
  .hero-mark { opacity: .13; width: 80vw; right: -14rem; }
  .split, .grid.two, .grid.three, .footer-inner { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }