/* KoiSwarm brand tokens (copied from koiswarm-landing/packages/brand, not linked). */
:root {
  color-scheme: light;
  --paper: #f4f1ea; --paper-deep: #ebe6dc; --card: #fdfcf9; --card-strong: #ffffff;
  --ink-900: #262420; --ink-700: #4a463e; --ink-500: #6b6559; --ink-400: #948d7e;
  --line: #e6e1d5; --line-strong: #dad4c6;
  --accent: #c6613f; --accent-deep: #a84a2f; --accent-soft: #f4e4db; --moss: #647060; --blue: #61748a; --gold: #ad8952;
  --on-accent: #ffffff;
  --radius-md: 16px; --radius-lg: 22px; --radius-xl: 30px;
  --shadow-sm: 0 8px 24px rgb(38 36 32 / 7%); --shadow-md: 0 24px 70px rgb(38 36 32 / 10%);
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-serif: "Source Serif 4", Georgia, "Hiragino Mincho ProN", serif;
  --content: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #171613; --paper-deep: #211f1b; --card: #211f1b; --card-strong: #282621;
    --ink-900: #f4f1ea; --ink-700: #cfcabe; --ink-500: #948d7d; --ink-400: #7b7466;
    --line: #2e2c26; --line-strong: #3d3a32;
    --accent: #d97c56; --accent-deep: #e79172; --accent-soft: #3a261d; --moss: #93a38e; --blue: #8ea0b7; --gold: #cfa96d;
    --shadow-sm: 0 8px 24px rgb(0 0 0 / 42%); --shadow-md: 0 24px 70px rgb(0 0 0 / 55%);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink-900); font: 16px/1.65 var(--font-sans); }
a { color: var(--accent-deep); }
.wrap { max-width: var(--content); margin: 0 auto; padding: 0 16px; }
header.nav { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
header.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; }
.logo { font-weight: 750; text-decoration: none; color: var(--ink-900); display: flex; gap: 8px; align-items: center; white-space: nowrap; }
.logo small { color: var(--ink-500); font-weight: 500; }
nav.links { display: flex; gap: 18px; align-items: center; }
nav.links a { color: var(--ink-700); text-decoration: none; font-size: 15px; }
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 12px; padding: 11px 18px; font-weight: 650; text-decoration: none; border: 1px solid var(--line-strong); color: var(--ink-900); background: var(--card); }
.btn.primary { background: var(--accent); color: var(--on-accent); border-color: transparent; }
.hero { padding: 72px 0 40px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow { color: var(--accent-deep); font-weight: 650; font-size: 14px; letter-spacing: .02em; }
h1 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(34px, 6vw, 58px); line-height: 1.12; margin: 10px 0 18px; letter-spacing: -0.01em; }
.lead { font-size: 19px; color: var(--ink-700); max-width: 34em; }
.cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.phone { justify-self: center; width: 300px; max-width: 100%; aspect-ratio: 9 / 18.5; background: var(--card-strong); border: 10px solid #1d1c1a; border-radius: 40px; box-shadow: var(--shadow-md); padding: 22px 14px; display: grid; align-content: start; gap: 10px; }
.phone .ph-title { font-weight: 700; font-size: 15px; display: flex; gap: 6px; align-items: center; }
.phone .ph-card { display: grid; grid-template-columns: 40px 1fr; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.phone .ph-ic { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--paper-deep); font-size: 22px; }
.phone .ph-name { font-weight: 650; font-size: 14px; }
.phone .ph-sub { font-size: 12px; color: var(--ink-500); }
section { padding: 56px 0; }
h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(26px, 4vw, 38px); margin: 0 0 12px; }
.sub { color: var(--ink-500); margin: 0 0 28px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow-sm); }
.card .num { width: 34px; height: 34px; border-radius: 99px; background: var(--accent-soft); color: var(--accent-deep); display: grid; place-items: center; font-weight: 750; margin-bottom: 10px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-700); }
.chat { font-size: 14px; display: grid; gap: 8px; margin-top: 12px; }
.bubble { padding: 8px 12px; border-radius: 14px; background: var(--paper-deep); max-width: 92%; }
.bubble.me { justify-self: end; background: var(--accent); color: var(--on-accent); }
code, .code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--paper-deep); padding: 2px 6px; border-radius: 6px; word-break: break-all; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature .ic { font-size: 24px; }
.connect { display: grid; gap: 10px; }
.copy { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.copy code { font-size: 16px; padding: 10px 12px; }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--ink-500); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.doc { max-width: 780px; padding: 40px 16px 72px; margin: 0 auto; }
.doc h1 { font-size: clamp(30px, 5vw, 44px); }
.doc h2 { font-size: 26px; margin-top: 40px; }
.doc pre { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; overflow-x: auto; font-size: 14px; line-height: 1.5; }
.doc pre code { background: none; padding: 0; word-break: normal; }
.doc table { border-collapse: collapse; width: 100%; font-size: 15px; display: block; overflow-x: auto; }
.doc th, .doc td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.toc { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 8px; }
.toc a { font-size: 14px; padding: 4px 10px; border-radius: 99px; background: var(--card); border: 1px solid var(--line); text-decoration: none; color: var(--ink-700); }
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; gap: 32px; }
  .steps, .features { grid-template-columns: 1fr; }
  nav.links a:not(.btn) { display: none; }
}
.langbar { display: flex; justify-content: flex-end; padding-bottom: 6px; }
.langs { display: flex; gap: 4px; flex-wrap: wrap; }
.langs a { font-size: 13px; padding: 2px 9px; border-radius: 99px; text-decoration: none; color: var(--ink-500); border: 1px solid transparent; }
.langs a[aria-current="true"] { color: var(--ink-900); border-color: var(--line-strong); background: var(--card); }