:root {
  --bg: #f6f7f5; --surface: #ffffff; --ink: #1d2733; --muted: #5b6675; --line: #d9dee3;
  --accent: #0b6e6e; --accent-ink: #ffffff; --accent-soft: #e3f1ef; --danger: #a33a2a; --warn-bg: #fff4e5; --ok-bg: #e7f5ea;
  --radius: 10px; --font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Hiragino Sans", "Yu Gothic", Meiryo, "Noto Sans Arabic", Tahoma, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11161b; --surface: #182029; --ink: #e6ebef; --muted: #9aa6b2; --line: #2a3541;
    --accent: #3fb8ad; --accent-ink: #0d1a1a; --accent-soft: #173130; --danger: #e07a68; --warn-bg: #3a2c16; --ok-bg: #173323; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--font); }
a { color: var(--accent); }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.muted { color: var(--muted); } .small { font-size: .87rem; }

.top { background: var(--surface); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 20px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: .02em; }
.mark { background: var(--accent); color: var(--accent-ink); font-size: .72rem; padding: 4px 6px; border-radius: 5px; letter-spacing: .08em; }
.top nav { display: flex; gap: 18px; flex: 1; }
.top nav a { color: var(--ink); text-decoration: none; font-size: .95rem; }
.top nav a:hover { color: var(--accent); }
.lang select { font: inherit; font-size: .9rem; padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); }

.hero { padding: 44px 0 20px; }
.hero h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.15; margin: 0 0 12px; letter-spacing: -.01em; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 680px; margin: 0 0 10px; }
.link { font-weight: 600; text-decoration: none; }
.done { padding-bottom: 80px; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin: 0 0 28px; }
.card.narrow { max-width: 420px; margin: 48px auto; }
fieldset { border: 0; margin: 0 0 22px; padding: 0; }
legend, .card h2 { font-size: 1.05rem; font-weight: 700; margin: 0 0 12px; padding: 0; }
.legend2 { font-weight: 600; margin: 4px 0 8px; font-size: .95rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.row.three { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 640px) { .row, .row.three { grid-template-columns: 1fr; } }
.f { display: block; margin: 0 0 14px; }
.f > span { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 5px; }
.f small { display: block; color: var(--muted); font-size: .82rem; margin-top: 4px; }
em { color: var(--danger); font-style: normal; }
input, select, textarea { width: 100%; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
textarea { resize: vertical; }
.prods { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
@media (max-width: 640px) { .prods { grid-template-columns: 1fr; } }
.prod { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.prod:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.prod input, .consent input { width: auto; margin-top: 4px; accent-color: var(--accent); }
.prod strong { display: block; font-size: .93rem; }
.prod small { display: block; color: var(--muted); font-size: .82rem; line-height: 1.4; }
.consent { display: flex; gap: 10px; align-items: flex-start; margin: 4px 0 18px; font-size: .9rem; }
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }

.btn { display: inline-block; font: inherit; font-weight: 600; background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent); border-radius: 8px; padding: 11px 20px; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.07); }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.small { padding: 6px 12px; font-size: .88rem; }

.alert { background: var(--warn-bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; margin: 0 0 18px; }
.alert ul { margin: 6px 0 0; padding-inline-start: 20px; }
.ok { background: var(--ok-bg); border-radius: 8px; padding: 10px 14px; }

.notices { display: grid; gap: 14px; margin-bottom: 40px; }
.notice { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.notice h2 { margin: 2px 0 10px; font-size: 1.15rem; } .notice h2 a { color: var(--ink); text-decoration: none; }
.notice.full { margin-bottom: 24px; } .notice.full h1 { margin: 2px 0 12px; font-size: 1.6rem; }
.notice.full h2 { margin-top: 20px; font-size: 1rem; }
.ref { margin: 0; font-size: .8rem; letter-spacing: .06em; color: var(--accent); font-weight: 700; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0 0 14px; font-size: .93rem; }
dt { color: var(--muted); } dd { margin: 0; }
.crumb { margin: 22px 0 0; font-size: .92rem; } .crumb a { text-decoration: none; }
.prose { overflow-wrap: anywhere; }

.foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 22px 0 32px; font-size: .86rem; }
.foot p { margin: 4px 0; }

[dir="rtl"] .lead, [dir="rtl"] .f > span { letter-spacing: 0; }
[dir="rtl"] .link { unicode-bidi: plaintext; }
:lang(ja) .hero h1 { letter-spacing: 0; }

/* v2: practice requests and reseller offers */
.hero.slim { padding: 32px 0 14px; }
.ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px; }
.countries { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; }
.ctry { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); text-decoration: none; font-size: .95rem; }
.ctry:hover { border-color: var(--accent); background: var(--accent-soft); }
.cc { font-size: .72rem; font-weight: 700; letter-spacing: .06em; color: var(--accent); background: var(--accent-soft); border-radius: 4px; padding: 2px 5px; }
.how { margin: 8px 0 30px; } .how h2 { font-size: 1.15rem; } .how ol { padding-inline-start: 22px; } .how li { margin-bottom: 6px; }
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
@media (max-width: 640px) { .choices { grid-template-columns: 1fr; } }
.choice { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.choice:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.choice input { width: auto; margin-top: 4px; accent-color: var(--accent); }
.choice strong { display: block; font-size: .93rem; } .choice small { display: block; color: var(--muted); font-size: .82rem; line-height: 1.4; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.tab { padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; color: var(--ink); font-size: .86rem; background: var(--surface); }
.tab.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.price { font-size: 1.15rem; font-weight: 700; color: var(--accent); margin: 0 0 10px; }
.kv { grid-template-columns: minmax(120px, max-content) 1fr; }
@media (max-width: 640px) { .kv { grid-template-columns: 1fr; } .kv dt { margin-top: 6px; } }
details.card summary { cursor: pointer; font-weight: 700; }
details.card dl { margin-top: 14px; }
.st { font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 3px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.st-pending { background: #fff1cc; color: #7a5300; } .st-closed, .st-removed { background: var(--bg); color: var(--muted); }
.pill { display: inline-block; font-size: .82rem; border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; margin: 0 4px 4px 0; }
@media (max-width: 640px) {
  .top-in { padding-block: 10px; gap: 8px 14px; }
  .top nav { order: 3; width: 100%; flex: none; gap: 16px; }
  .lang { margin-inline-start: auto; }
}
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; margin: 8px 0 14px; }
.thumb { display: block; aspect-ratio: 4 / 3; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--bg); }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.doc { display: flex; align-items: center; gap: 8px; padding: 10px; border: 1px solid var(--line); border-radius: 8px; font-size: .86rem; color: var(--ink); text-decoration: none; overflow-wrap: anywhere; }
input[type="file"] { padding: 9px; background: var(--bg); }
.warn { color: var(--danger); }