:root {
  --bg: #f7f8f6;
  --card: #fff;
  --ink: #12201c;
  --mute: #5c6b66;
  --line: #e4e8e5;
  --brand: #0f766e;
  --brand-2: #115e59;
  --tint: #ecfdf7;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(18, 32, 28, 0.06);
  --sans: "Plus Jakarta Sans", system-ui, sans-serif;
  --max: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--bg); line-height: 1.55; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.skip { position: absolute; left: 12px; top: -40px; background: #000; color: #fff; padding: 8px; z-index: 100; }
.skip:focus { top: 12px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, .chip:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 248, 246, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: height 0.2s ease;
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 72px; }
.is-scrolled .header-row { min-height: 60px; }
.logo { font-weight: 700; letter-spacing: -0.03em; }
.logo span { color: var(--brand); }
.nav { display: flex; align-items: center; gap: 18px; }
.nav a { color: var(--mute); font-size: 0.95rem; font-weight: 500; }
.nav a:hover { color: var(--ink); }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 16px; border-radius: 12px; border: 1px solid var(--brand);
  background: var(--brand); color: #fff; font-weight: 600; cursor: pointer;
}
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-lg { min-height: 48px; padding: 0 20px; }

.hero { padding: 40px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 32px; align-items: center; }
.eyebrow { letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.75rem; font-weight: 700; color: var(--brand); margin: 0 0 10px; }
h1, h2, h3 { letter-spacing: -0.03em; line-height: 1.15; margin: 0 0 12px; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.lede { color: var(--mute); font-size: 1.08rem; max-width: 52ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.ticks { display: flex; flex-wrap: wrap; gap: 10px 16px; padding: 0; list-style: none; color: var(--mute); font-size: 0.95rem; }
.ticks li::before { content: "✓ "; color: var(--brand); font-weight: 700; }

.float-board {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.mini {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; box-shadow: var(--shadow);
}
.mini strong { display: block; font-size: 0.92rem; }
.mini span { color: var(--mute); font-size: 0.82rem; }
.mini:nth-child(2) { transform: translateY(12px); }
.mini:nth-child(3) { transform: translateY(-8px); }

.section { padding: 56px 0; }
.section-head { margin-bottom: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: 0 1px 0 rgba(18,32,28,0.03);
}
.card:hover { border-color: #cde5df; }
.icon {
  width: 40px; height: 40px; border-radius: 12px; background: var(--tint); color: var(--brand);
  display: grid; place-items: center; font-weight: 700; margin-bottom: 12px;
}
.cat { font-size: 0.75rem; font-weight: 700; color: var(--brand); text-transform: uppercase; letter-spacing: 0.06em; }
.trust { background: var(--brand-2); color: #ecfdf7; border-radius: 24px; padding: 36px; }
.trust p { color: #c7ebe3; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 999px; min-height: 40px; padding: 0 14px; cursor: pointer; }
.chip.is-on { background: var(--ink); color: #fff; border-color: var(--ink); }
.search { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 12px; padding: 0 14px; background: #fff; }

.tool-layout { display: grid; grid-template-columns: 1fr 0.9fr; gap: 24px; align-items: start; }
.form-grid { display: grid; gap: 12px; }
.form-grid label { display: grid; gap: 6px; font-weight: 600; font-size: 0.92rem; }
.form-grid input, .form-grid select, .form-grid textarea {
  min-height: 48px; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; background: #fff;
}
.item-head, .item-row {
  display: grid; grid-template-columns: 1.4fr 0.55fr 0.85fr 44px; gap: 8px; align-items: center;
}
.item-head { font-size: 0.78rem; color: var(--mute); font-weight: 600; }
.item-row input { min-height: 44px; width: 100%; }
.js-remove { min-height: 44px; min-width: 44px; padding: 0; }
.check { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.check input { width: 20px; min-height: 20px; }
.result { background: var(--tint); border: 1px solid #cde5df; border-radius: var(--radius); padding: 20px; overflow-wrap: anywhere; }
.result strong { font-size: 1.6rem; }
.faq details { border-top: 1px solid var(--line); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.soon { opacity: 0.7; }

.note { color: var(--mute); font-size: 0.9rem; }

.cta-final { text-align: center; padding: 64px 0; }
.site-footer { background: #12201c; color: #d5ddd9; padding: 48px 0 20px; margin-top: 24px; }
.foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 24px; }
.site-footer a { color: #fff; }
.foot-bottom { margin-top: 28px; border-top: 1px solid rgba(255,255,255,.12); padding-top: 16px; font-size: 0.88rem; }
.wa-float {
  position: fixed; right: 16px; bottom: 16px; width: 52px; height: 52px; border-radius: 50%;
  background: #25d366; color: #fff; display: grid; place-items: center; box-shadow: var(--shadow); z-index: 40;
}
.article-wrap { max-width: 720px; }
.article-body { font-size: 1.05rem; }
.article-body h2 { margin-top: 1.6em; }
.article-body p, .article-body li { color: var(--ink); }
.article-body a { color: var(--brand); text-decoration: underline; }
.article-body ul { padding-left: 1.2em; }

.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 0.88rem; color: var(--mute); margin: 0 0 16px; }
.crumbs a { color: var(--brand); text-decoration: underline; }
.tip { display: block; font-weight: 400; color: var(--mute); font-size: 0.85rem; margin-top: 4px; }
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.status { border-radius: 12px; padding: 14px 16px; margin: 16px 0; }
.status-bad { background: #fef2f2; border: 1px solid #fecaca; }
.status-warn { background: #fffbeb; border: 1px solid #fde68a; }
.status-ok { background: #ecfdf5; border: 1px solid #a7f3d0; }
.vol-grid { display: grid; gap: 10px; margin-top: 12px; }
.vol-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: grid; gap: 4px; font-size: 0.92rem; }
.disclaimer { margin-top: 40px; }
.copy-block {
  background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; white-space: pre-wrap; font-size: 0.92rem; line-height: 1.5;
  overflow-x: auto;
}
.card ol { padding-left: 1.2em; color: var(--ink); }
.next-inline { margin-top: 16px; }
.stack { display: grid; gap: 8px; margin: 8px 0 16px; }
.stack-row, .stack-eq { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.stack-eq { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 4px; font-size: 1.05rem; }
.adv { border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.adv summary { cursor: pointer; font-weight: 600; }
.adv label { margin-top: 10px; }

@media (max-width: 900px) {
  .hero-grid, .tool-layout, .grid-3, .foot-grid { grid-template-columns: 1fr 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: grid; place-items: center; }
  .nav {
    display: none; position: absolute; left: 16px; right: 16px; top: 64px;
    background: #fff; border: 1px solid var(--line); border-radius: 16px;
    flex-direction: column; padding: 12px; align-items: stretch;
  }
  .nav.is-open { display: flex; }
  .hero-grid, .tool-layout, .grid-3, .grid-2, .foot-grid, .float-board { grid-template-columns: 1fr; }
  .item-head { display: none; }
  .item-row { grid-template-columns: 1fr 1fr 1fr 44px; }
  .mini:nth-child(2), .mini:nth-child(3) { transform: none; }
  .hero { padding-top: 24px; }
}
@media (max-width: 520px) {
  .item-row { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-header { transition: none; }
}