/* Layout concept: a trade register. Wide grotesk headlines, a stamped verification record as the hero object,
   ledger-style tables, and one cobalt accent for "verified". Brokers are drawn in a muted warning tone. */
:root {
  --bg: #F2F4F3;          /* cool paper, slight green-grey bias */
  --surface: #FFFFFF;
  --surface-2: #E8ECEB;
  --ink: #0F1E26;
  --muted: #56666E;
  --line: #CDD5D6;
  --line-base: #CDD5D6;
  --muted-base: #56666E;
  --accent: #1E44C2;      /* cobalt: verified, direct */
  --accent-ink: #FFFFFF;
  --accent-soft: #E3E9FB;
  --good: #1D7A4C;
  --bad: #A2481E;         /* the mandate chain */
  --bad-soft: #F6E7DE;
  --band-ink: #10202A;
  --band-ink-fg: #E9EFF1;
  --band-ink-muted: #9FB0B8;
  --band-ink-line: #2A3C46;
  --font-display: "Archivo", var(--font-script), "Noto Sans", system-ui, sans-serif;
  --font-body: "Noto Sans", var(--font-script), system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --font-script: "Noto Sans";
  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.1875rem;
  --step-2: 1.5rem;
  --step-3: clamp(1.75rem, 1.2rem + 2.2vw, 2.5rem);
  --step-4: clamp(2.25rem, 1.3rem + 4.2vw, 4.25rem);
  --radius: 6px;
  --gutter: clamp(16px, 4vw, 40px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0C1418; --surface: #121D22; --surface-2: #17242A; --ink: #E6ECEE; --muted: #96A6AD;
    --line: #26353C; --line-base: #26353C; --muted-base: #96A6AD; --accent: #8BA6FF; --accent-ink: #0C1418; --accent-soft: #1A2650;
    --good: #52C48D; --bad: #F0956C; --bad-soft: #33201A;
    --band-ink: #060C0F; --band-ink-fg: #E6ECEE; --band-ink-muted: #8C9CA3; --band-ink-line: #1F2D33;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0C1418; --surface: #121D22; --surface-2: #17242A; --ink: #E6ECEE; --muted: #96A6AD;
  --line: #26353C; --line-base: #26353C; --muted-base: #96A6AD; --accent: #8BA6FF; --accent-ink: #0C1418; --accent-soft: #1A2650;
  --good: #52C48D; --bad: #F0956C; --bad-soft: #33201A;
  --band-ink: #060C0F; --band-ink-fg: #E6ECEE; --band-ink-muted: #8C9CA3; --band-ink-line: #1F2D33;
  color-scheme: dark;
}
:lang(ko) { --font-script: "Noto Sans KR"; }
:lang(ja) { --font-script: "Noto Sans JP"; }
:lang(zh-Hans) { --font-script: "Noto Sans SC"; }
:lang(zh-Hant) { --font-script: "Noto Sans TC"; }
:lang(ar) { --font-script: "Noto Sans Arabic"; }
:lang(th) { --font-script: "Noto Sans Thai"; }
:lang(hi) { --font-script: "Noto Sans Devanagari"; }

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: var(--step-0); line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
:lang(ko) body, :lang(ja) body, :lang(zh-Hans) body, :lang(zh-Hant) body { line-height: 1.75; word-break: keep-all; overflow-wrap: anywhere; }
:lang(th) body, :lang(hi) body, :lang(ar) body { line-height: 1.8; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: var(--gutter); }
.mono { font-family: var(--font-mono); }
.up { text-transform: uppercase; letter-spacing: 0.08em; font-size: var(--step--1); }
:lang(ko) .up, :lang(ja) .up, :lang(zh-Hans) .up, :lang(zh-Hant) .up, :lang(ar) .up, :lang(th) .up, :lang(hi) .up { letter-spacing: 0.02em; }
.fine { font-size: var(--step--1); color: var(--muted); margin: 0; }
.sel { user-select: all; }

h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: var(--step-4); line-height: 1.04; font-weight: 760; font-stretch: 118%; font-variation-settings: "wdth" 118; }
h2 { font-size: var(--step-3); line-height: 1.12; font-weight: 720; font-stretch: 112%; font-variation-settings: "wdth" 112; }
h3 { font-size: var(--step-1); line-height: 1.3; font-weight: 650; }
:lang(ko) h1, :lang(ja) h1, :lang(zh-Hans) h1, :lang(zh-Hant) h1 { line-height: 1.18; letter-spacing: -0.02em; font-weight: 800; }
:lang(ar) h1, :lang(ar) h2, :lang(th) h1, :lang(hi) h1 { line-height: 1.35; letter-spacing: 0; }

/* Header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top-row { display: flex; align-items: center; gap: 20px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); flex: none; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-stretch: 115%; font-size: 1.05rem; margin: 0; letter-spacing: -0.01em; }
.brand-name b { font-weight: 400; color: var(--muted); margin-inline-start: 0.3em; }
.nav { display: flex; gap: 18px; margin-inline-start: auto; }
.nav a { text-decoration: none; font-size: 0.9rem; color: var(--muted); white-space: nowrap; }
.nav a:hover { color: var(--ink); }
.top-tools { display: flex; align-items: center; gap: 10px; }
.lang-select { font: inherit; font-size: 0.875rem; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 8px; max-width: 9.5rem; }
@media (max-width: 980px) { .nav { display: none; } .top-tools { margin-inline-start: auto; } }
@media (max-width: 480px) { .top-tools .btn { display: none; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 600; text-decoration: none; border-radius: var(--radius); padding: 13px 20px; border: 1.5px solid var(--accent); cursor: pointer; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-solid { background: var(--accent); color: var(--accent-ink); }
.btn-line { background: transparent; color: var(--accent); }
.btn-sm { padding: 7px 12px; font-size: 0.875rem; }
.btn-wide { width: 100%; padding-block: 15px; }
.btn[disabled] { opacity: .6; cursor: wait; transform: none; }

/* Hero */
.hero { padding-block: clamp(36px, 6vw, 80px) clamp(16px, 3vw, 32px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: minmax(0, 1fr); } }
.hero-copy { display: grid; gap: 22px; min-width: 0; }
.eyebrow { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.06em; color: var(--accent); margin: 0; }
.lede { font-size: var(--step-1); color: var(--muted); max-width: 40em; margin: 0; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

.record { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 22px 22px 18px; position: relative; box-shadow: 0 1px 0 var(--line), 0 18px 40px -24px color-mix(in srgb, var(--ink) 35%, transparent); min-width: 0; }
.record-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 14px; border-bottom: 1px dashed var(--line); }
.tag { font-size: 0.75rem; padding: 2px 8px; border-radius: 99px; background: var(--surface-2); color: var(--muted); }
.record-meta { margin: 14px 0; display: grid; gap: 8px; }
.record-meta div { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: 10px; }
.record-meta dt { font-family: var(--font-mono); font-size: var(--step--1); color: var(--muted); }
.record-meta dd { margin: 0; font-weight: 600; min-width: 0; }
.checks { list-style: none; margin: 0; padding: 12px 0; border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); display: grid; gap: 9px; }
.checks li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.95rem; }
.tick { flex: none; display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: color-mix(in srgb, var(--good) 16%, transparent); color: var(--good); margin-top: 2px; }
.record-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 14px; flex-wrap: wrap; }
.stamp { font-family: var(--font-display); font-weight: 750; font-stretch: 120%; font-size: 0.95rem; color: var(--accent); border: 2px solid var(--accent); border-radius: 4px; padding: 4px 10px; transform: rotate(-3deg); }
:lang(ar) .stamp { transform: rotate(3deg); }

/* Bands */
.band { padding-block: clamp(56px, 8vw, 104px); }
.band-alt { background: var(--surface); border-block: 1px solid var(--line); }
.section-lead { color: var(--muted); font-size: var(--step-1); max-width: 42em; margin: 14px 0 0; }
.split { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: minmax(0, 1fr); } }

/* Chain */
.chains { display: grid; gap: 18px; margin-top: 36px; }
.chain-row { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; display: grid; gap: 12px; min-width: 0; }
.chain-label { margin: 0; color: var(--muted); }
.chain-scroll { overflow-x: auto; padding-bottom: 4px; }
.chain { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; min-width: max-content; }
.node { padding: 9px 14px; border-radius: 99px; font-weight: 600; font-size: 0.92rem; white-space: nowrap; border: 1.5px solid var(--ink); background: var(--bg); }
.is-bad .node-mid { border-style: dashed; border-color: var(--bad); color: var(--bad); background: var(--bad-soft); }
.link { width: 54px; height: 2px; background: var(--line); position: relative; flex: none; }
.link span { position: absolute; inset-inline: 0; top: -1.45em; text-align: center; font-family: var(--font-mono); font-size: 0.75rem; color: var(--bad); }
.is-bad .link { background: repeating-linear-gradient(90deg, var(--bad) 0 5px, transparent 5px 9px); }
.is-good { border-color: var(--accent); background: var(--accent-soft); }
.is-good .node { border-color: var(--accent); background: var(--surface); }
.link-direct { width: 120px; height: 3px; background: var(--accent); }
.link-direct span { color: var(--accent); font-size: 1.05rem; top: -1.5em; }
.chain-note { margin: 0; font-size: 0.95rem; }
@media (max-width: 560px) {
  .node { padding: 6px 9px; font-size: 0.78rem; }
  .link { width: 18px; }
  .link span { display: none; }
  .link-direct { width: 90px; }
  .link-direct span { display: block; }
}
.pain { margin: 28px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.pain li { border-top: 2px solid var(--bad); padding-top: 12px; color: var(--muted); font-size: 0.95rem; }
@media (max-width: 760px) { .pain { grid-template-columns: minmax(0, 1fr); } }

/* Verification table */
.vtable { margin-top: 32px; border-top: 2px solid var(--ink); }
.vrow { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 24px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.vhead { color: var(--muted); padding-block: 10px; }
.vcheck { font-weight: 600; }
.vout { color: var(--muted); position: relative; padding-inline-start: 22px; }
.vout::before { content: ""; position: absolute; inset-inline-start: 0; top: 0.72em; width: 12px; height: 2px; background: var(--bad); }
@media (max-width: 640px) { .vrow { grid-template-columns: minmax(0, 1fr); gap: 4px; } .vhead { display: none; } }

/* Rules */
.rules { list-style: none; margin: 0; padding: 0; display: grid; }
.rules li { display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: 12px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.rules li:first-child { border-top: 1px solid var(--line); }
.rule-no { color: var(--accent); font-weight: 500; padding-top: 1px; }

/* Steps */
.steps { list-style: none; margin: 32px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 2px solid var(--ink); }
.steps li { padding: 20px 20px 4px 0; display: grid; gap: 8px; align-content: start; }
.steps li + li { padding-inline-start: 20px; border-inline-start: 1px solid var(--line); }
.step-no { color: var(--accent); font-size: var(--step-2); line-height: 1; }
.steps p { margin: 0; color: var(--muted); font-size: 0.95rem; }
@media (max-width: 860px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } .steps li:nth-child(3) { border-inline-start: 0; padding-inline-start: 0; } }
@media (max-width: 520px) { .steps { grid-template-columns: minmax(0, 1fr); } .steps li + li { border-inline-start: 0; padding-inline-start: 0; border-top: 1px solid var(--line); } }
.cats { margin-top: 44px; display: grid; gap: 12px; }
.cats p { margin: 0; color: var(--muted); }
.cats ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.cats li { border: 1px solid var(--line); border-radius: 99px; padding: 6px 13px; font-size: 0.9rem; background: var(--bg); }

/* On-site */
.onsite { list-style: none; margin: 32px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.onsite li { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: grid; gap: 8px; align-content: start; }
.onsite p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.onsite-note { margin-top: 18px; max-width: 48em; }
@media (max-width: 900px) { .onsite { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .onsite { grid-template-columns: minmax(0, 1fr); } }

/* Apply */
.band-ink { background: var(--band-ink); color: var(--band-ink-fg); --line: var(--band-ink-line); --muted: var(--band-ink-muted); }
.band-ink .rule-no { color: color-mix(in srgb, var(--accent) 55%, var(--band-ink-fg)); }
.apply-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
@media (max-width: 900px) { .apply-grid { grid-template-columns: minmax(0, 1fr); } }
.apply-intro { display: grid; gap: 22px; min-width: 0; }
.rules-compact li { font-size: 0.95rem; }
.apply { background: var(--surface); color: var(--ink); border-radius: 12px; padding: clamp(18px, 3vw, 32px); display: grid; gap: 16px; min-width: 0;
  --line: var(--line-base); --muted: var(--muted-base); }
.apply fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.apply legend { font-weight: 600; margin-bottom: 8px; padding: 0; }
.role-opts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
@media (max-width: 520px) { .role-opts { grid-template-columns: minmax(0, 1fr); } }
.role-opt { display: flex; gap: 10px; align-items: center; border: 1.5px solid var(--line); border-radius: var(--radius); padding: 11px 12px; cursor: pointer; font-weight: 600; font-size: 0.95rem; }
.role-opt:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.role-opt input { accent-color: var(--accent); margin: 0; flex: none; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
@media (max-width: 600px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }
.field { display: grid; gap: 6px; min-width: 0; }
.field label { font-size: 0.9rem; font-weight: 600; }
.opt { font-weight: 400; color: var(--muted); }
.field input, .field textarea { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; width: 100%; min-width: 0; }
.field textarea { resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: color-mix(in srgb, var(--muted) 75%, transparent); }
.field.has-err input, .field.has-err textarea { border-color: var(--bad); }
.hint { margin: 0; font-size: var(--step--1); color: var(--muted); }
.err { margin: 0; font-size: var(--step--1); color: var(--bad); font-weight: 600; }
.declare { display: grid; gap: 10px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); }
.check { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; align-items: start; font-size: 0.95rem; cursor: pointer; }
.check input { accent-color: var(--accent); margin-top: 0.3em; }
.hp { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; opacity: 0; pointer-events: none; }
.result { border-radius: var(--radius); padding: 14px 16px; background: var(--accent-soft); display: grid; gap: 10px; }
.result h3 { font-size: var(--step-1); }
.result p { margin: 0; }
.result.is-err { background: var(--bad-soft); color: var(--ink); }
.copy-box { font-family: var(--font-mono); font-size: 0.8rem; width: 100%; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; }
.mail-line { font-weight: 600; }

/* FAQ, about */
.faq { display: grid; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; padding: 14px 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--accent); flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 0 0 16px; color: var(--muted); max-width: 46em; }
.about { display: grid; gap: 14px; max-width: 44em; }
.about p { margin: 0; }

/* Footer */
.foot { border-top: 1px solid var(--line); padding-block: 40px 28px; display: grid; gap: 24px; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 32px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: minmax(0, 1fr); } }
.foot-grid > div { display: grid; gap: 6px; align-content: start; }
.lang-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr)); gap: 6px 14px; }
.lang-list a { text-decoration: none; color: var(--muted); font-size: 0.92rem; }
.lang-list a:hover, .lang-list a[aria-current] { color: var(--ink); }
.lang-list a[aria-current] { font-weight: 700; }

/* Scripts without Latin letterforms: labels use the body face, not the Latin monospace */
:lang(ko) .mono, :lang(ja) .mono, :lang(zh-Hans) .mono, :lang(zh-Hant) .mono, :lang(ar) .mono, :lang(th) .mono, :lang(hi) .mono, :lang(ru) .mono,
:lang(ko) .eyebrow, :lang(ja) .eyebrow, :lang(zh-Hans) .eyebrow, :lang(zh-Hant) .eyebrow, :lang(ar) .eyebrow, :lang(th) .eyebrow, :lang(hi) .eyebrow, :lang(ru) .eyebrow,
:lang(ko) .record-meta dt, :lang(ja) .record-meta dt, :lang(zh-Hans) .record-meta dt, :lang(zh-Hant) .record-meta dt, :lang(ar) .record-meta dt, :lang(th) .record-meta dt, :lang(hi) .record-meta dt, :lang(ru) .record-meta dt {
  font-family: var(--font-body); letter-spacing: 0;
}
.rule-no, .step-no, .link span { font-family: var(--font-mono) !important; }
.mail-line, .sel.mono { font-family: var(--font-mono) !important; direction: ltr; unicode-bidi: isolate; }
.brand-name { direction: ltr; unicode-bidi: isolate; }