/* ---------- tokens: black and white, one blue accent ---------- */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-elev: #ffffff;
  --bg-sunk: #f5f5f5;
  --ink: #0a0a0a;
  --ink-2: #525252;
  --ink-3: #737373;
  --line: #e5e5e5;
  --line-2: #d4d4d4;
  --accent: #0070f3;
  --accent-hover: #005bd1;
  --accent-strong: #0070f3;
  --accent-text: #0070f3;
  --accent-ink: #ffffff;
  --accent-soft: #eaf3ff;
  --kimi: #0a0a0a;
  --kimi-ink: #0a0a0a;
  --hard: #0a0a0a;
  --ok: #0f7a45;
  --ok-soft: #e6f4ec;
  --warn: #8f5500;
  --warn-soft: #fbf0d9;
  --bad: #b4291f;
  --bad-soft: #fbe6e3;
  --code-bg: #0a0a0a;
  --code-ink: #fafafa;
  --code-dim: #8a8a8a;
  --code-str: #d4d4d4;
  --code-key: #6cb0ff;
  --code-line: #262626;
  --shadow: none;
  --radius: 2px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0a0a;
  --bg-elev: #111111;
  --bg-sunk: #050505;
  --ink: #fafafa;
  --ink-2: #a3a3a3;
  --ink-3: #8a8a8a;
  --line: #1f1f1f;
  --line-2: #2e2e2e;
  --accent: #0070f3;
  --accent-hover: #005bd1;
  --accent-strong: #0070f3;
  --accent-text: #3291ff;
  --accent-ink: #ffffff;
  --accent-soft: #0b1b33;
  --kimi: #fafafa;
  --kimi-ink: #fafafa;
  --hard: #fafafa;
  --ok: #4cc58a;
  --ok-soft: #10241a;
  --warn: #e7b04d;
  --warn-soft: #261f10;
  --bad: #ff7a70;
  --bad-soft: #2a1513;
  --code-bg: #000000;
  --code-ink: #fafafa;
  --code-dim: #8a8a8a;
  --code-str: #d4d4d4;
  --code-key: #6cb0ff;
  --code-line: #1f1f1f;
  --shadow: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0a0a0a;
    --bg-elev: #111111;
    --bg-sunk: #050505;
    --ink: #fafafa;
    --ink-2: #a3a3a3;
    --ink-3: #8a8a8a;
    --line: #1f1f1f;
    --line-2: #2e2e2e;
    --accent: #0070f3;
    --accent-hover: #005bd1;
    --accent-strong: #0070f3;
    --accent-text: #3291ff;
    --accent-ink: #ffffff;
    --accent-soft: #0b1b33;
    --kimi: #fafafa;
    --kimi-ink: #fafafa;
    --hard: #fafafa;
    --ok: #4cc58a;
    --ok-soft: #10241a;
    --warn: #e7b04d;
    --warn-soft: #261f10;
    --bad: #ff7a70;
    --bad-soft: #2a1513;
    --code-bg: #000000;
    --code-ink: #fafafa;
    --code-dim: #8a8a8a;
    --code-str: #d4d4d4;
    --code-key: #6cb0ff;
    --code-line: #1f1f1f;
    --shadow: none;
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
html[data-lang="en"] .zh, html[data-lang="en"] .fr, html[data-lang="en"] .es,
html[data-lang="zh"] .en, html[data-lang="zh"] .fr, html[data-lang="zh"] .es,
html[data-lang="fr"] .zh, html[data-lang="fr"] .es, html[data-lang="fr"] .en:has(~ .fr),
html[data-lang="es"] .zh, html[data-lang="es"] .fr, html[data-lang="es"] .en:has(~ .es) { display: none !important; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; text-wrap: balance; }
html[data-lang="zh"] h1, html[data-lang="zh"] h2, html[data-lang="zh"] h3 { letter-spacing: 0; line-height: 1.3; }
p { margin: 0 0 1em; text-wrap: pretty; }
a { color: inherit; }
a:not([class]) { color: var(--accent-text); text-underline-offset: 3px; }
a:not([class]):hover { color: var(--accent-hover); }
code, kbd { font-family: var(--mono); font-size: 0.88em; }
:not(pre) > code { background: var(--bg-sunk); border: 1px solid var(--line); border-radius: 2px; padding: 0.1em 0.4em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
::selection { background: var(--accent); color: var(--accent-ink); }
.container { width: min(1120px, 100% - 32px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--ink-2); }
.dim { color: var(--ink-3); }
.mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.tnum { font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }

/* ---------- header / footer ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 8px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.08rem; letter-spacing: -0.01em; text-decoration: none; margin-right: 20px; }
.brand svg { width: 28px; height: 28px; flex: none; }
.nav-links { display: flex; gap: 2px; }
.nav-links a { text-decoration: none; padding: 8px 12px; border-radius: 2px; color: var(--ink-2); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--ink); background: var(--bg-sunk); }
.nav-spacer { flex: 1; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-grid; place-items: center; min-width: 40px; height: 40px; padding: 0 10px; border-radius: 2px;
  background: transparent; border: 1px solid transparent; color: var(--ink-2); cursor: pointer; font: 600 0.88rem var(--font);
}
.icon-btn:hover { background: var(--bg-sunk); color: var(--ink); }
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn { white-space: nowrap; }
.menu-btn { display: none; }
@media (max-width: 560px) {
  .brand { margin-right: 0; }
  .icon-btn { min-width: 36px; padding: 0 6px; }
  #theme-btn { display: none; }
  .nav { gap: 4px; }
}
@media (max-width: 820px) {
  .menu-btn { display: inline-grid; }
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; padding: 8px 16px 16px; background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px; }
  .nav-actions .btn-ghost { display: none; }
}
.site-footer { border-top: 1px solid var(--line); margin-top: 96px; padding: 40px 0 56px; color: var(--ink-2); font-size: 0.92rem; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 24px 48px; justify-content: space-between; }
.footer-grid nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-grid a { text-decoration: none; }
.footer-grid a:hover { color: var(--accent-text); }
.fine { font-size: 0.82rem; color: var(--ink-3); max-width: 62ch; margin-top: 10px; }

/* ---------- buttons & forms ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 16px;
  border-radius: 2px; border: 1px solid transparent; font: 600 0.95rem var(--font); text-decoration: none; cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s; white-space: nowrap; color: var(--ink);
}
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--accent-strong); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg-elev); border-color: var(--line-2); }
.btn-secondary:hover { border-color: var(--ink-3); }
.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--bg-sunk); }
.btn-danger { background: transparent; border-color: var(--line-2); color: var(--bad); }
.btn-danger:hover { background: var(--bad-soft); border-color: var(--bad); }
.btn-lg { height: 50px; padding: 0 24px; font-size: 1rem; border-radius: 2px; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 0.86rem; border-radius: 2px; }

.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label { font-weight: 600; font-size: 0.9rem; }
.input, select.input {
  width: 100%; height: 44px; padding: 0 12px; border-radius: 2px; border: 1px solid var(--line-2);
  background: var(--bg-elev); color: var(--ink); font: 1rem var(--font);
}
.input::placeholder { color: var(--ink-3); }
.input:hover { border-color: var(--ink-3); }
.input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.hint { font-size: 0.84rem; color: var(--ink-3); }
.alert { padding: 10px 14px; border-radius: 2px; font-size: 0.92rem; margin-bottom: 16px; border: 1px solid transparent; }
.alert-bad { background: var(--bad-soft); color: var(--bad); border-color: color-mix(in srgb, var(--bad) 30%, transparent); }
.alert-ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.alert-warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }

/* ---------- generic blocks ---------- */
.card { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 2px; font-size: 0.82rem; font-weight: 600;
  background: var(--accent-soft); color: var(--accent-text); border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}
.pill.neutral { background: var(--bg-sunk); color: var(--ink-2); border-color: var(--line); }
.pill.ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 25%, transparent); }
.pill.bad { background: var(--bad-soft); color: var(--bad); border-color: color-mix(in srgb, var(--bad) 25%, transparent); }
.pill.warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 25%, transparent); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.section { padding: 88px 0 0; }
.section-head { max-width: 62ch; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(1.8rem, 1.2rem + 2vw, 2.7rem); margin-bottom: 14px; }
.section-head p { color: var(--ink-2); font-size: 1.08rem; margin: 0; }
.eyebrow { font: 600 0.8rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-text); margin-bottom: 14px; display: block; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: minmax(0, 1fr); } .section { padding-top: 64px; } }

/* ---------- code ---------- */
.code, .snippet-wrap { background: var(--code-bg); color: var(--code-ink); border: 1px solid var(--code-line); border-radius: var(--radius); overflow: hidden; text-align: left; }
.code-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 6px 8px 6px 6px; border-bottom: 1px solid var(--code-line); }
.code-tabs { display: flex; gap: 2px; overflow-x: auto; }
.code-tabs button, .code-copy {
  background: transparent; border: 0; color: var(--code-dim); font: 600 0.82rem var(--mono); padding: 7px 12px; border-radius: 2px; cursor: pointer; white-space: nowrap;
}
.code-tabs button:hover, .code-copy:hover { color: var(--code-ink); background: rgba(255, 255, 255, 0.06); }
.code-tabs button[aria-selected="true"] { color: var(--code-ink); background: rgba(255, 255, 255, 0.1); }
.code-label { color: var(--code-dim); font: 600 0.78rem var(--mono); padding: 7px 12px; }
.code pre, .snippet-wrap pre { margin: 0; padding: 18px 20px; overflow-x: auto; font: 0.86rem/1.7 var(--mono); tab-size: 2; }
.code pre code, .snippet-wrap pre code { font: inherit; background: none; border: 0; padding: 0; }
.tk-c { color: var(--code-dim); }
.tk-s { color: var(--code-str); }
.tk-k { color: var(--code-key); }
pre.snippet { margin: 0 0 1.2em; }
.snippet-wrap { margin: 0 0 1.4em; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); }
table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
th { text-align: left; font: 600 0.76rem var(--mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-3); padding: 12px 16px; border-bottom: 1px solid var(--line); white-space: nowrap; background: var(--bg-elev); }
td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: color-mix(in srgb, var(--bg-sunk) 55%, transparent); }
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.compact th, table.compact td { padding-left: 14px; padding-right: 14px; white-space: nowrap; }
.empty { padding: 36px 16px; text-align: center; color: var(--ink-3); }

/* ---------- toast / modal ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; z-index: 100;
  background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 2px; font-weight: 600; font-size: 0.92rem;
  transition: opacity 0.2s, transform 0.2s; max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
dialog { border: 1px solid var(--line-2); border-radius: 2px; padding: 0; background: var(--bg-elev); color: var(--ink); width: min(520px, calc(100vw - 32px)); box-shadow: var(--shadow); }
dialog::backdrop { background: rgba(10, 10, 12, 0.55); backdrop-filter: blur(3px); }
.dialog-body { padding: 28px; }
.dialog-body h3 { font-size: 1.3rem; margin-bottom: 8px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }
.keybox { display: flex; gap: 8px; align-items: stretch; margin: 16px 0 0; }
.keybox code { flex: 1; word-break: break-all; padding: 12px; font-size: 0.9rem; background: var(--code-bg); color: var(--code-ink); border-radius: 2px; border: 1px solid var(--code-line); }

/* ---------- home ---------- */
.hero { position: relative; padding: 72px 0 24px; overflow: clip; }
.hero::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 640px; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 60% at 82% 8%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 56px 56px;
  -webkit-mask-image: linear-gradient(#000 20%, transparent 95%); mask-image: linear-gradient(#000 20%, transparent 95%);
  opacity: 0.7;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 1.4rem + 4vw, 4.4rem); margin: 20px 0 22px; }
.hero h1 em { font-style: normal; color: var(--accent-text); white-space: nowrap; }
.hero .lede { font-size: clamp(1.05rem, 1rem + 0.3vw, 1.25rem); color: var(--ink-2); max-width: 52ch; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 26px 0 0; padding: 0; list-style: none; color: var(--ink-2); font-size: 0.92rem; }
.hero-points li::before { content: "✓"; color: var(--ok); font-weight: 800; margin-right: 8px; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } .hero { padding-top: 44px; } }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); margin-top: 56px; }
.stat { padding: 22px 24px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font: 700 1.7rem var(--font); letter-spacing: -0.02em; }
.stat span { color: var(--ink-2); font-size: 0.9rem; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } .stat:nth-child(2) { border-right: 0; } .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }

.flow-wrap { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); padding: 8px; margin-bottom: 16px; }
.flow-wrap svg { width: 100%; height: auto; display: block; }
.flow-mobile { display: none !important; }
@media (max-width: 700px) { .flow-desktop { display: none !important; } .flow-mobile { display: block !important; } }
.flow .node { fill: var(--bg-elev); stroke: var(--line-2); stroke-width: 1.5; }
.flow .node.hot { fill: var(--accent); stroke: none; }
.flow text { fill: var(--ink); font: 600 15px var(--font); }
.flow text.sub { fill: var(--ink-3); font: 500 12px var(--mono); }
.flow text.hot { fill: var(--accent-ink); }
.flow .wire { fill: none; stroke: var(--line-2); stroke-width: 2; }
.flow .pulse { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 6 18; animation: dash 1.4s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -24; } }
@media (prefers-reduced-motion: reduce) { .flow .pulse { animation: none; } html { scroll-behavior: auto; } }

.step { position: relative; }
.step .n { font: 700 0.85rem var(--mono); color: var(--accent-text); margin-bottom: 14px; display: block; }
.step h3 { font-size: 1.2rem; margin-bottom: 8px; }
.step p { color: var(--ink-2); margin: 0; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.chip { border: 1px solid var(--line-2); background: var(--bg-elev); color: var(--ink-2); border-radius: 2px; padding: 6px 14px; font: 600 0.88rem var(--font); cursor: pointer; }
.chip:hover { border-color: var(--ink-3); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.model-name { font-weight: 700; }
.model-desc { color: var(--ink-3); font-size: 0.84rem; max-width: 40ch; }
.prov { font: 600 0.74rem var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.05em; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.tag { font: 500 0.72rem var(--mono); color: var(--ink-2); background: var(--bg-sunk); border: 1px solid var(--line); border-radius: 2px; padding: 1px 7px; }
.price-big { font-weight: 700; }
.calc { display: grid; grid-template-columns: repeat(4, 1fr) auto; gap: 14px; align-items: end; margin-top: 16px; padding: 20px; }
.calc .field { margin: 0; }
.calc-out { text-align: right; min-width: 150px; }
.calc-out b { display: block; font: 700 1.9rem var(--font); letter-spacing: -0.02em; color: var(--accent-text); }
@media (max-width: 900px) { .calc { grid-template-columns: 1fr 1fr; } .calc-out { grid-column: 1 / -1; text-align: left; } }

.feature h3 { font-size: 1.08rem; margin: 14px 0 6px; }
.feature p { color: var(--ink-2); margin: 0; font-size: 0.96rem; }
.feature .ico { width: 40px; height: 40px; border-radius: 2px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); }
.feature .ico svg { width: 22px; height: 22px; }

details.faq { border-bottom: 1px solid var(--line); padding: 4px 0; }
details.faq summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; padding: 18px 40px 18px 0; list-style: none; position: relative; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font: 400 1.6rem var(--font); color: var(--ink-3); transition: transform 0.2s; }
details.faq[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details.faq p { color: var(--ink-2); padding-right: 40px; margin-bottom: 18px; }
.faq-list { max-width: 820px; border-top: 1px solid var(--line); }

.cta-band { margin-top: 96px; padding: 56px 32px; text-align: center; border-radius: 2px; background: var(--ink); color: var(--bg); }
.cta-band h2 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.6rem); margin-bottom: 12px; }
.cta-band p { color: color-mix(in srgb, var(--bg) 70%, transparent); margin-bottom: 26px; }
.cta-band .btn-primary { }

/* ---------- docs ---------- */
.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 56px; padding-top: 48px; }
.docs-nav { position: sticky; top: 92px; align-self: start; display: grid; gap: 2px; font-size: 0.92rem; max-height: calc(100vh - 110px); overflow: auto; }
.docs-nav a { text-decoration: none; padding: 6px 12px; border-left: 2px solid var(--line); color: var(--ink-2); }
.docs-nav a:hover { color: var(--ink); border-color: var(--ink-3); }
.docs-nav a.active { color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
.docs-body { max-width: 780px; }
.docs-body h1 { font-size: clamp(2rem, 1.4rem + 2vw, 2.8rem); margin-bottom: 14px; }
.docs-body h2 { font-size: 1.6rem; margin: 56px 0 14px; padding-top: 8px; }
.docs-body h3 { font-size: 1.15rem; margin: 28px 0 10px; }
.docs-body p, .docs-body li { color: var(--ink-2); }
.docs-body li { margin-bottom: 6px; }
.docs-body table { font-size: 0.9rem; }
.docs-body .table-wrap { margin: 0 0 1.4em; }
.callout { border-left: 3px solid var(--accent); background: var(--accent-soft); padding: 12px 16px; border-radius: 0; margin: 0 0 1.4em; color: var(--ink); }
.callout p { margin: 0; color: inherit; }
@media (max-width: 900px) {
  .docs { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .docs-nav { position: static; display: flex; overflow-x: auto; max-height: none; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
  .docs-nav a { border-left: 0; border-bottom: 2px solid transparent; white-space: nowrap; }
  .docs-nav a.active { border-color: var(--accent); }
}

/* ---------- auth ---------- */
.auth-wrap { min-height: calc(100vh - 64px - 140px); display: grid; place-items: center; padding: 48px 0 0; }
.auth-card { width: min(440px, 100%); padding: 32px; box-shadow: var(--shadow); }
.auth-card h1 { font-size: 1.6rem; margin-bottom: 6px; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; border-radius: 2px; background: var(--bg-sunk); margin-bottom: 24px; }
.seg button { height: 38px; border: 0; background: transparent; border-radius: 2px; font: 600 0.92rem var(--font); color: var(--ink-2); cursor: pointer; }
.seg button[aria-selected="true"] { background: var(--bg-elev); color: var(--ink); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12); }

/* ---------- console ---------- */
.console { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 40px; padding-top: 40px; }
.side { position: sticky; top: 92px; align-self: start; display: grid; gap: 2px; }
.side button {
  display: flex; align-items: center; gap: 10px; text-align: left; border: 0; background: transparent; padding: 10px 12px; border-radius: 2px;
  font: 600 0.95rem var(--font); color: var(--ink-2); cursor: pointer;
}
.side button svg { width: 18px; height: 18px; flex: none; }
.side button:hover { background: var(--bg-sunk); color: var(--ink); }
.side button[aria-selected="true"] { background: var(--ink); color: var(--bg); }
.side .who { padding: 4px 12px 16px; font-size: 0.85rem; color: var(--ink-3); word-break: break-all; }
@media (max-width: 860px) {
  .console { grid-template-columns: minmax(0, 1fr); gap: 16px; padding-top: 24px; }
  .side { position: static; display: flex; overflow-x: auto; gap: 4px; padding-bottom: 8px; }
  .side button { white-space: nowrap; }
  .side .who { display: none; }
}
.panel > h1 { font-size: 1.7rem; margin-bottom: 20px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.panel-head h1 { font-size: 1.7rem; }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
@media (max-width: 960px) { .kpis { grid-template-columns: repeat(2, 1fr); } }
.kpi { padding: 18px 20px; }
.kpi span { font-size: 0.84rem; color: var(--ink-2); font-weight: 500; }
.kpi b { display: block; font: 700 1.7rem var(--font); letter-spacing: -0.02em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi small { color: var(--ink-3); }
.kpi.primary b { color: var(--accent-text); }
.chart { width: 100%; height: auto; display: block; overflow: visible; }
.chart .bar { fill: var(--accent); }
.chart .bar:hover { fill: var(--accent-hover); }
.chart .grid-line { stroke: var(--line); stroke-width: 1; }
.chart text { fill: var(--ink-3); font: 500 11px var(--mono); }
.panel > .card + .card, .panel > .card + .table-wrap, .panel > .table-wrap + .card, .panel > .card + .kpis, .panel > .kpis + .card, .panel > .alert + .kpis { margin-top: 16px; }
.panel > .kpis { margin-bottom: 0; }
.panel > .kpis + .card { margin-top: 16px; }
.card h2, .card h3 { font-size: 1.1rem; margin-bottom: 12px; }
.amounts { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row .input { flex: 1; min-width: 160px; }
.codes-out { font: 0.9rem/1.9 var(--mono); background: var(--bg-sunk); border: 1px solid var(--line); border-radius: 2px; padding: 12px 16px; margin-top: 14px; user-select: all; }
.loading { color: var(--ink-3); padding: 40px 0; text-align: center; }

/* ---------- checkbox rows, legal, settings, checklist ---------- */
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400 !important; font-size: 0.92rem !important; color: var(--ink-2); cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--accent); flex: none; }
details.owner { margin-bottom: 16px; color: var(--ink-2); font-size: 0.92rem; }
details.owner summary { cursor: pointer; }
.legal { margin: 0 auto; padding-top: 48px; }
textarea.input { height: auto; padding: 10px 12px; line-height: 1.5; resize: vertical; font-family: var(--mono); font-size: 0.9rem; }
.prov-box { padding: 20px 0; border-top: 1px solid var(--line); }
.prov-box:first-of-type { border-top: 0; padding-top: 0; }
.prov-box h3 { font-size: 1rem; margin: 0; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.test-out { margin-top: 12px; display: grid; gap: 6px; font-size: 0.9rem; }
.test-out div { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.checklist ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.checklist li { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.checklist li:last-child { border-bottom: 0; }
.checklist .tick { width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--line-2); display: grid; place-items: center; font-size: 0.8rem; color: transparent; flex: none; }
.checklist li.done .tick { background: var(--ok); border-color: var(--ok); color: #fff; }
.checklist li.done span.label { color: var(--ink-3); text-decoration: line-through; }
.checklist .label { flex: 1; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; }
@media (max-width: 700px) { .field-row { grid-template-columns: minmax(0, 1fr); } }
table .input.price { width: 92px; height: 36px; padding: 0 8px; font-size: 0.9rem; text-align: right; }
td input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--accent); }

/* ---------- operator dashboard ---------- */
.side-h { padding: 14px 12px 4px; font: 600 0.72rem var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); }
.side-h:first-of-type { padding-top: 0; }
@media (max-width: 860px) { .side-h { display: none; } }
.todo ul { list-style: none; margin: 0; padding: 0; }
.todo li { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.todo li:last-child { border-bottom: 0; padding-bottom: 0; }
.todo .label { flex: 1; min-width: 0; }
.lvl { width: 10px; height: 10px; border-radius: 50%; flex: none; background: var(--ink-3); }
.lvl.bad { background: var(--bad); } .lvl.warn { background: var(--warn); } .lvl.info { background: var(--accent); } .lvl.ok { background: var(--ok); }
.fn-row { display: grid; grid-template-columns: 170px 1fr 90px; gap: 12px; align-items: center; margin-top: 12px; }
.fn-bar { height: 14px; border-radius: 2px; background: var(--bg-sunk); overflow: hidden; }
.fn-bar span { display: block; height: 100%; background: var(--accent); border-radius: 2px; }
.fn-num { text-align: right; font-variant-numeric: tabular-nums; }
.fn-hint { margin: 2px 0 0 182px; }
@media (max-width: 700px) { .fn-row { grid-template-columns: 1fr 1fr; } .fn-bar { grid-column: 1 / -1; order: 3; } .fn-hint { margin-left: 0; } }
.stockbar { height: 16px; border-radius: 2px; background: var(--bg-sunk); overflow: hidden; }
.stockbar span { display: block; height: 100%; background: var(--accent); }
.playbook h2 { scroll-margin-top: 90px; }
.playbook { max-width: 800px; }
.playbook .table-wrap { margin-bottom: 1.4em; }
dialog.wide { width: min(920px, calc(100vw - 32px)); }
dialog.wide .dialog-body { max-height: 82vh; overflow: auto; }
.playbook blockquote { margin: 0 0 1.2em; padding: 12px 18px; border-left: 3px solid var(--line-2); background: var(--bg-sunk); border-radius: 0; color: var(--ink-2); font-size: 0.95rem; }
.playbook blockquote p { margin: 0 0 0.6em; } .playbook blockquote p:last-child { margin: 0; }
.playbook .tag { display: inline-block; font: 600 0.72rem var(--mono); color: var(--accent-text); margin-bottom: 4px; }

/* ---------- minimal homepage ---------- */
.hero-min { padding: 56px 0 8px; }
.hero-min .lede { max-width: 46ch; margin-bottom: 24px; }
.hero-min h1 { margin: 16px 0 16px; }
.section-tight { padding-top: 48px; }
.section-head.slim { margin-bottom: 20px; }
.section-head.slim h2 { font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem); margin-bottom: 6px; }
.section-head.slim p { font-size: 1rem; }
.baseurl { margin-top: 16px; display: grid; gap: 12px; padding: 16px 20px; }
.baseurl > div { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.baseurl .muted { min-width: 120px; font-size: 0.9rem; }
.baseurl code { flex: 1; min-width: 0; word-break: break-all; font-size: 0.95rem; padding: 8px 12px; }
.idcopy { background: none; border: 0; padding: 0; margin-top: 6px; cursor: copy; display: inline-block; }
.idcopy:hover code { border-color: var(--accent); color: var(--accent-text); }
.grid-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-steps .card { padding: 18px 20px; }
@media (max-width: 620px) { .grid-steps { grid-template-columns: minmax(0, 1fr); } }

/* ---------- minimal finish ---------- */
h1, h2, h3, h4 { letter-spacing: -0.03em; font-weight: 700; }
html[data-lang="zh"] h1, html[data-lang="zh"] h2, html[data-lang="zh"] h3 { letter-spacing: 0; }
.btn { font-weight: 600; }
.btn-secondary { border-color: var(--line-2); }
.btn-secondary:hover { border-color: var(--ink); }
.card, .table-wrap, .code, .snippet-wrap { border-color: var(--line-2); }
.step .n { display: block; margin-bottom: 14px; font: 500 0.8rem var(--mono); color: var(--ink-3); }
.pill { font: 600 0.72rem var(--mono); letter-spacing: 0.04em; text-transform: uppercase; padding: 3px 8px; background: transparent; border: 1px solid var(--line-2); color: var(--ink-2); }
.chip { font-family: var(--mono); font-size: 0.8rem; }
.hero::before { content: none; }
.hero h1 { font-size: clamp(2.6rem, 1.3rem + 4.8vw, 4.9rem); line-height: 1.02; font-weight: 800; }
.hero h1 em { color: var(--accent-text); }
.hero-min { border-bottom: 1px solid var(--line); }
th { letter-spacing: 0.08em; }
.prov::before { content: none; }
.code-tabs button[aria-selected="true"] { box-shadow: inset 0 -1px 0 var(--code-key); }
a:not([class]) { text-decoration-thickness: 1px; }
.lang-select { height: 40px; padding: 0 6px; background: transparent; color: var(--ink-2); border: 1px solid transparent; border-radius: 2px; font: 600 0.88rem var(--font); cursor: pointer; }
.lang-select:hover { background: var(--bg-sunk); color: var(--ink); }
.lang-select option { color: initial; }
@media (max-width: 560px) { .lang-select { padding: 0 2px; max-width: 74px; } }
#auth-slot { display: inline-flex; gap: 6px; align-items: center; white-space: nowrap; }
.nav-links a { white-space: nowrap; }
@media (min-width: 821px) and (max-width: 1000px) { .nav-links a[href$="#start"] { display: none; } }
#discount-pill, #models-body .pill { color: var(--accent-text); border-color: var(--accent); }

/* price section: one small heading per kind of model */
.price-sub { font-size: 1.05rem; margin: 40px 0 12px; }
.container > .price-sub { margin-top: 0; }
.price-fine { margin: -4px 0 12px; }
td.note { font-size: 0.82rem; color: var(--ink-2); max-width: 36ch; }

/* early-access mode: the server puts data-early on <html>; sign-up wording gives way to the early-access wording */
html:not([data-early]) .early-only { display: none !important; }
html[data-early] .live-only { display: none !important; }