/*
 * yakitsuke.com. The same darkroom as the app (docs/design-system.md): true grays,
 * paper text, ochre yellow rationed to "do" and "here", 2px ink rules, square blocks,
 * hard offset shadows. Values copied from src/renderer/src/styles/tokens.css.
 */
@font-face {
  font-family: 'Space Grotesk Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 300 700;
  src: url(/fonts/space-grotesk-latin-wght-normal.woff2) format('woff2-variations');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ink: #000;
  --gray-975: #0c0c0c;
  --gray-950: #131313;
  --gray-900: #1a1a1a;
  --gray-850: #212121;
  --gray-800: #292929;
  --gray-700: #3a3a3a;
  --gray-600: #4d4d4d;
  --gray-500: #6b6b6b;
  --paper-400: #a8a49b;
  --paper-100: #f1ede4;
  --yellow-400: #e3ad3b;
  --yellow-300: #efc163;
  --orange-500: #f57c1f;
  --green-500: #3dbe7a;

  --color-bg: var(--gray-950);
  --color-well: var(--gray-975);
  --color-surface: var(--gray-900);
  --color-surface-raised: var(--gray-850);
  --color-rule: var(--ink);
  --color-border: var(--gray-800);
  --color-border-control: var(--gray-700);
  --color-text: var(--paper-100);
  --color-text-muted: var(--paper-400);
  --color-accent: var(--yellow-400);
  --color-accent-hover: var(--yellow-300);
  --color-accent-text: var(--yellow-300);
  --color-text-on-accent: var(--ink);
  --color-inverse: var(--paper-100);
  --color-text-on-inverse: var(--ink);
  --color-success: var(--green-500);
  --color-warning: var(--orange-500);
  --color-shadow: var(--ink);

  --font-sans: 'Space Grotesk Variable', -apple-system, BlinkMacSystemFont, 'PingFang TC', 'Noto Sans TC', 'Helvetica Neue', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Menlo, monospace;
  --stroke-hair: 1px;
  --stroke: 2px;
  --stroke-heavy: 4px;
  --tracking-caps: 0.12em;
  --tracking-tight: -0.02em;
  --duration-press: 60ms;
  --page: 1120px;
  --gutter: 16px;
}
@media (min-width: 720px) { :root { --gutter: 32px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font: 400 16px/1.6 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
:lang(zh) body, body:lang(zh) { line-height: 1.75; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: underline; text-decoration-thickness: var(--stroke); text-underline-offset: 3px; text-decoration-color: var(--gray-600); }
a:hover { text-decoration-color: var(--color-accent); }
:focus-visible { outline: var(--stroke) solid var(--paper-100); outline-offset: 2px; }
code, .mono { font-family: var(--font-mono); font-size: 0.875em; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: var(--tracking-tight); line-height: 1.15; }

.wrap { max-width: var(--page); margin: 0 auto; padding: 0 var(--gutter); }
.muted { color: var(--color-text-muted); }
.nowrap { white-space: nowrap; }
.small { font-size: 13px; }
.caps { font-size: 12px; font-weight: 700; letter-spacing: var(--tracking-caps); text-transform: uppercase; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: var(--gutter); top: 8px; background: var(--color-inverse); color: var(--color-text-on-inverse); padding: 8px 12px; z-index: 10; }

/* ── Header ─────────────────────────────────────────────── */
.top { border-bottom: var(--stroke) solid var(--color-rule); background: var(--color-surface); position: sticky; top: 0; z-index: 5; }
.top .wrap { display: flex; align-items: center; gap: 20px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 17px; letter-spacing: var(--tracking-tight); }
.brand img { width: 28px; height: 28px; }
.brand .kana { color: var(--color-text-muted); font-weight: 500; font-size: 14px; }
.nav { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav a { text-decoration: none; font-size: 14px; font-weight: 600; color: var(--color-text-muted); }
.nav a:hover { color: var(--color-text); }
.nav .lang { border: var(--stroke) solid var(--color-border-control); padding: 3px 8px; color: var(--color-text); }
.nav .lang:hover { border-color: var(--paper-400); }
@media (max-width: 719px) { .nav .section-link { display: none; } .brand .kana { display: none; } }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; font: 700 16px/1.2 var(--font-sans); text-decoration: none;
  border: var(--stroke) solid var(--color-border-control); background: var(--color-surface-raised); color: var(--color-text);
  transition: transform var(--duration-press), box-shadow var(--duration-press);
}
.btn:hover { border-color: var(--paper-400); }
.btn.primary { background: var(--color-accent); color: var(--color-text-on-accent); border-color: var(--color-shadow); box-shadow: 4px 4px 0 var(--color-shadow); }
.btn.primary:hover { background: var(--color-accent-hover); }
.btn.primary:active { transform: translate(4px, 4px); box-shadow: none; }
.btn.small { padding: 6px 12px; font-size: 14px; box-shadow: 2px 2px 0 var(--color-shadow); }
.btn.small:active { transform: translate(2px, 2px); }

/* ── Hero ───────────────────────────────────────────────── */
.hero { border-bottom: var(--stroke) solid var(--color-rule); }
.hero .wrap { display: grid; gap: 40px; padding-top: 48px; padding-bottom: 56px; }
@media (min-width: 900px) { .hero .wrap { grid-template-columns: 1fr 420px; gap: 64px; align-items: center; padding-top: 72px; padding-bottom: 80px; } }
.eyebrow { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.tag { font-size: 11px; font-weight: 700; letter-spacing: var(--tracking-caps); text-transform: uppercase; padding: 3px 8px; border: var(--stroke) solid var(--color-border-control); }
.tag.beta { background: var(--color-accent); color: var(--color-text-on-accent); border-color: var(--color-accent); }
.hero h1 { font-size: clamp(40px, 6vw, 68px); margin-bottom: 24px; }
.hero h1 .accent { color: var(--color-accent-text); }
.lead { font-size: 19px; color: var(--color-text-muted); max-width: 34em; margin-bottom: 32px; }
.lead strong { color: var(--color-text); font-weight: 600; }
.cta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-bottom: 20px; }
.fine { font-size: 13px; color: var(--color-text-muted); }

/* The photo sits on the well, untouched: no tint, no shadow, only the yellow frame. */
.strip { background: var(--color-well); border: var(--stroke) solid var(--color-rule); }
.strip figure { margin: 0; position: relative; aspect-ratio: 2 / 3; }
.strip figure img { width: 100%; height: 100%; object-fit: cover; }
.strip figcaption { display: flex; justify-content: space-between; gap: 12px; padding: 10px 12px; border-top: var(--stroke) solid var(--color-rule); background: var(--color-surface); font-size: 12px; }
.strip figcaption .sim { font-weight: 700; letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--color-accent-text); }
.sims { display: flex; flex-wrap: wrap; gap: 6px; padding: 12px; border-top: var(--stroke) solid var(--color-rule); background: var(--color-surface); }
.sims button {
  font: 600 11px/1 var(--font-sans); letter-spacing: 0.04em; text-transform: uppercase;
  padding: 6px 8px; cursor: pointer;
  background: var(--color-surface-raised); color: var(--color-text-muted); border: var(--stroke) solid var(--color-border-control);
}
.sims button:hover { color: var(--color-text); border-color: var(--paper-400); }
.sims button[aria-pressed="true"] { background: var(--color-inverse); color: var(--color-text-on-inverse); border-color: var(--color-inverse); }
.sims[hidden] { display: none; }

/* ── Sections ───────────────────────────────────────────── */
section.block { border-bottom: var(--stroke) solid var(--color-rule); padding: 64px 0; }
section.block:nth-of-type(even) { background: var(--color-surface); }
.block h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 12px; }
.block .intro { color: var(--color-text-muted); max-width: 40em; margin-bottom: 40px; font-size: 17px; }
.label { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; color: var(--color-text-muted); }
.label::after { content: ''; flex: 1; height: var(--stroke); background: var(--color-border-control); }

.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 24px; counter-reset: step; }
@media (min-width: 800px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { border-top: var(--stroke-heavy) solid var(--color-text); padding-top: 16px; counter-increment: step; }
.steps li::before { content: counter(step); display: inline-grid; place-items: center; width: 32px; height: 32px; margin-bottom: 12px; background: var(--color-inverse); color: var(--color-text-on-inverse); font-weight: 700; }
.steps h3 { font-size: 20px; margin-bottom: 8px; }
.steps p { color: var(--color-text-muted); margin: 0; }

.grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--color-bg); border: var(--stroke) solid var(--color-border-control); padding: 20px; }
.card h3 { font-size: 18px; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.card h3::before { content: ''; width: 10px; height: 10px; background: var(--color-text); flex: none; }
.card p { color: var(--color-text-muted); margin: 0; font-size: 15px; }
.card .optional { margin-left: auto; font-size: 10px; letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--color-text-muted); border: var(--stroke-hair) solid var(--color-border-control); padding: 1px 6px; font-weight: 600; }

table.cams { width: 100%; border-collapse: collapse; margin-bottom: 32px; }
.cams th, .cams td { text-align: left; padding: 12px 12px 12px 0; border-bottom: var(--stroke-hair) solid var(--color-border-control); vertical-align: top; }
.cams th { font-size: 12px; letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--color-text-muted); border-bottom: var(--stroke) solid var(--color-text); }
.cams td:first-child { font-weight: 700; white-space: nowrap; }
.badge { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 2px 8px; color: var(--ink); white-space: nowrap; }
.badge.ok { background: var(--color-success); }
.badge.warn { background: var(--color-warning); }
.badge.no { background: var(--gray-700); color: var(--color-text); }
.reqs { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.reqs li { padding-left: 20px; position: relative; }
.reqs li::before { content: ''; position: absolute; left: 0; top: 0.65em; width: 8px; height: 8px; background: var(--color-text); }

.privacy-points { display: grid; gap: 16px; margin-bottom: 32px; }
@media (min-width: 800px) { .privacy-points { grid-template-columns: repeat(3, 1fr); } }
.privacy-points div { border-left: var(--stroke-heavy) solid var(--color-text); padding-left: 16px; }
.privacy-points strong { display: block; margin-bottom: 4px; }
.privacy-points span { color: var(--color-text-muted); font-size: 15px; }

dl.faq { margin: 0; display: grid; gap: 24px; max-width: 46em; }
.faq dt { font-weight: 700; font-size: 18px; margin-bottom: 6px; }
.faq dd { margin: 0; color: var(--color-text-muted); }

.final { text-align: left; }
.final .wrap { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.final h2 { margin: 0; }

/* ── Footer ─────────────────────────────────────────────── */
footer { padding: 32px 0 48px; font-size: 13px; color: var(--color-text-muted); }
footer .wrap { display: grid; gap: 12px; }
footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
footer nav a { text-decoration: none; font-weight: 600; color: var(--color-text); }
footer nav a:hover { text-decoration: underline; text-decoration-color: var(--color-accent); }

/* ── Policy pages ───────────────────────────────────────── */
.doc { padding: 48px 0 64px; border-bottom: var(--stroke) solid var(--color-rule); }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: clamp(32px, 5vw, 48px); margin-bottom: 8px; }
.doc .meta { color: var(--color-text-muted); font-size: 14px; margin-bottom: 32px; }
.doc .summary { background: var(--color-surface); border: var(--stroke) solid var(--color-border-control); border-left: var(--stroke-heavy) solid var(--color-accent); padding: 20px 24px; margin-bottom: 40px; }
.doc .summary p:last-child, .doc .summary ul:last-child { margin-bottom: 0; }
.doc h2 { font-size: 22px; margin: 40px 0 12px; padding-top: 16px; border-top: var(--stroke) solid var(--color-border-control); }
.doc h3 { font-size: 17px; margin: 24px 0 8px; }
.doc ul { padding-left: 1.25em; margin: 0 0 1em; }
.doc li { margin-bottom: 6px; }
.doc li::marker { color: var(--color-text-muted); }
.doc table { width: 100%; border-collapse: collapse; margin: 0 0 1em; font-size: 15px; }
.doc th, .doc td { text-align: left; padding: 10px 12px 10px 0; border-bottom: var(--stroke-hair) solid var(--color-border-control); vertical-align: top; }
.doc th { font-size: 12px; letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--color-text-muted); border-bottom: var(--stroke) solid var(--color-text); }
.table-scroll { overflow-x: auto; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }