/*
Theme Name: LinuxAir
Theme URI: https://linuxair.com
Author: OneBrain AI
Description: Marketing site and documentation for LinuxAir, the quality-first LLM router. Activating the theme creates all pages, menus and the front page automatically.
Version: 1.2.0
Requires at least: 6.0
Requires PHP: 7.4
License: GPLv2 or later
Text Domain: linuxair
*/

:root {
  --bg: #ffffff; --bg-2: #fafafa; --bg-3: #f4f4f5;
  --ink: #0a0a0a; --ink-2: #3f3f46; --muted: #71717a; --faint: #a1a1aa;
  --line: #e4e4e7; --line-2: #f0f0f2;
  --primary: #0a0a0a; --on-primary: #ffffff;
  --accent: #2563eb; --accent-soft: rgba(37, 99, 235, .08); --on-accent: #fff;
  --blue: #2563eb; --blue-s: rgba(37,99,235,.09);
  --cyan: #0891b2; --cyan-s: rgba(8,145,178,.1);
  --emerald: #059669; --emerald-s: rgba(5,150,105,.1);
  --amber: #d97706; --amber-s: rgba(217,119,6,.11);
  --rose: #e11d48; --rose-s: rgba(225,29,72,.09);
  --indigo: #4f46e5; --indigo-s: rgba(79,70,229,.09);
  --grad: linear-gradient(120deg, #2563eb, #0891b2 55%, #0ea5e9);
  --grad-soft: linear-gradient(140deg, rgba(37,99,235,.09), rgba(8,145,178,.07) 50%, rgba(5,150,105,.05));
  --grad-deep: linear-gradient(135deg, #0b1736 0%, #1d4ed8 55%, #0891b2 100%);
  --good: #15803d; --good-soft: rgba(21,128,61,.08); --warn: #b45309; --warn-soft: rgba(180,83,9,.08); --bad: #dc2626;
  --c2: #10b981; --c3: #f59e0b; --c4: #f43f5e;
  --radius: 12px; --radius-lg: 18px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px -12px rgba(0,0,0,.08);
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --w: 1160px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0a0a0a; --bg-2: #0f0f10; --bg-3: #18181b;
  --ink: #fafafa; --ink-2: #d4d4d8; --muted: #a1a1aa; --faint: #71717a;
  --line: #27272a; --line-2: #1c1c1f;
  --primary: #fafafa; --on-primary: #0a0a0a;
  --accent: #60a5fa; --accent-soft: rgba(96,165,250,.13); --on-accent: #0a0a0a;
  --blue: #60a5fa; --blue-s: rgba(96,165,250,.14);
  --cyan: #22d3ee; --cyan-s: rgba(34,211,238,.13);
  --emerald: #34d399; --emerald-s: rgba(52,211,153,.13);
  --amber: #fbbf24; --amber-s: rgba(251,191,36,.13);
  --rose: #fb7185; --rose-s: rgba(251,113,133,.13);
  --indigo: #818cf8; --indigo-s: rgba(129,140,248,.13);
  --grad: linear-gradient(120deg, #3b82f6, #06b6d4 60%, #22d3ee);
  --grad-soft: linear-gradient(140deg, rgba(59,130,246,.14), rgba(6,182,212,.1) 50%, rgba(16,185,129,.06));
  --grad-deep: linear-gradient(135deg, #0a1020 0%, #1e40af 55%, #0e7490 100%);
  --good: #4ade80; --good-soft: rgba(74,222,128,.1); --warn: #fbbf24; --warn-soft: rgba(251,191,36,.1); --bad: #f87171;
  --c2: #a1a1aa; --c3: #71717a; --c4: #52525b;
  --shadow: 0 0 0 1px #27272a;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; font-feature-settings: "cv11", "ss01"; }
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -.025em; font-weight: 650; color: var(--ink); }
::selection { background: var(--accent-soft); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--primary); color: var(--on-primary); padding: 8px 14px; border-radius: 8px; z-index: 200; }
.skip:focus { left: 8px; }
.ic { flex: none; vertical-align: -3px; }
.wrap { width: 100%; max-width: var(--w); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); font-size: .9em; }
.center { text-align: center; }

/* ---------- header */
.site-head { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid transparent; transition: border-color .2s; }
.site-head.scrolled { border-bottom-color: var(--line); }
.head-in { display: flex; align-items: center; gap: 28px; height: 64px; }
.site-head .brand, .site-foot .brand, a.brand, .brand {
  font-family: "Sora", "Inter", ui-sans-serif, system-ui, sans-serif !important;
  font-weight: 600 !important; font-size: 21px; letter-spacing: -.02em; line-height: 1;
  text-transform: lowercase; color: var(--ink); font-feature-settings: normal;
}
.site-foot .brand { font-size: 19px; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.nav a { display: block; padding: 7px 12px; border-radius: 8px; font-size: 14.5px; font-weight: 500; color: var(--ink-2); transition: color .12s, background .12s; }
.nav a:hover, .nav .current-menu-item > a, .nav .current_page_item > a, .nav .current-page-ancestor > a, .nav a.on { color: var(--accent); background: var(--accent-soft); }
.head-cta { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.theme-btn, .menu-btn { width: 36px; height: 36px; border-radius: 9px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); display: grid; place-items: center; cursor: pointer; }
.theme-btn:hover, .menu-btn:hover { background: var(--bg-3); }
.theme-btn .moon, [data-theme="dark"] .theme-btn .sun { display: none; }
[data-theme="dark"] .theme-btn .moon { display: block; }
.menu-btn { display: none; }
@media (max-width: 900px) {
  .nav { position: fixed; inset: 64px 0 auto 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 12px 20px 20px; display: none; flex-direction: column; }
  .nav ul { flex-direction: column; }
  .nav.open { display: flex; }
  .menu-btn { display: grid; }
  .head-cta .btn.ghost { display: none; }
}

/* ---------- buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; font-size: 14.5px; font-weight: 550; cursor: pointer; white-space: nowrap; transition: background .12s, border-color .12s, opacity .12s; }
.btn:hover { background: var(--bg-3); }
.btn.primary { background: var(--grad); border-color: transparent; color: #fff; box-shadow: 0 6px 18px -8px rgba(37,99,235,.65); }
.btn.primary:hover { filter: brightness(1.08) saturate(1.05); }
.btn.ghost { border-color: transparent; }
.btn.lg { height: 48px; padding: 0 22px; font-size: 15.5px; border-radius: 12px; }
.btn .ic { transition: transform .15s; }
.btn:hover .ic.arrow { transform: translateX(2px); }

/* ---------- sections */
.section { padding: 96px 0; }
.section.tight { padding: 64px 0; }
.section.alt { background: var(--grad-soft), var(--bg-2); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.section.alt.warm { background: linear-gradient(140deg, var(--amber-s), rgba(225,29,72,.05) 60%, transparent), var(--bg-2); }
.section.alt.cool { background: linear-gradient(140deg, var(--emerald-s), var(--cyan-s) 60%, transparent), var(--bg-2); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: .02em; margin-bottom: 14px; }
.eyebrow.pill { padding: 5px 12px; border-radius: 999px; background: var(--accent-soft); }
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.eyebrow.c-cyan { color: var(--cyan); } .eyebrow.c-cyan.pill { background: var(--cyan-s); }
.eyebrow.c-emerald { color: var(--emerald); } .eyebrow.c-emerald.pill { background: var(--emerald-s); }
.eyebrow.c-amber { color: var(--amber); } .eyebrow.c-amber.pill { background: var(--amber-s); }
.eyebrow.c-rose { color: var(--rose); } .eyebrow.c-rose.pill { background: var(--rose-s); }
.eyebrow.c-indigo { color: var(--indigo); } .eyebrow.c-indigo.pill { background: var(--indigo-s); }
.h-display { font-size: clamp(40px, 6vw, 68px); letter-spacing: -.04em; line-height: 1.03; font-weight: 680; }
.h-1 { font-size: clamp(32px, 4.2vw, 48px); letter-spacing: -.035em; line-height: 1.08; }
.h-2 { font-size: clamp(26px, 3vw, 36px); letter-spacing: -.03em; }
.h-3 { font-size: 19px; letter-spacing: -.015em; }
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); line-height: 1.6; max-width: 62ch; }
.sec-head { max-width: 720px; margin-bottom: 52px; }
.sec-head.center { margin-left: auto; margin-right: auto; }
.sec-head p { margin-top: 16px; }
.grad-text { background: linear-gradient(95deg, var(--blue), var(--cyan) 85%); padding-right: .04em; -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero::after { content: ""; position: absolute; width: 520px; height: 520px; right: -140px; top: -180px; border-radius: 50%; background: radial-gradient(closest-side, var(--cyan-s), transparent); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; }
.hero::before { background-image: linear-gradient(var(--line-2) 1px, transparent 1px), linear-gradient(90deg, var(--line-2) 1px, transparent 1px); }

/* ---------- hero */
.hero { padding: 88px 0 72px; position: relative; overflow: hidden; background: var(--grad-soft); }
.hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--line-2) 1px, transparent 1px), linear-gradient(90deg, var(--line-2) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%); pointer-events: none; }
.hero-in { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero .lead { margin: 22px 0 32px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: 13.5px; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap; }
.hero-note span { display: inline-flex; align-items: center; gap: 6px; }
.hero-note .ic { color: var(--good); }
@media (max-width: 960px) { .hero-in { grid-template-columns: 1fr; } }

/* product mock */
.mock { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; border-bottom: 1px solid var(--line-2); background: var(--bg-2); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.mock-bar span { margin-left: 10px; font-size: 12px; color: var(--muted); font-family: var(--mono); }
.mock-body { padding: 18px; }
.mock-prompt { font-size: 13.5px; padding: 12px 14px; background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 10px; color: var(--ink-2); }
.mock-tags { display: flex; gap: 6px; flex-wrap: wrap; margin: 12px 0 14px; }
.tag { font-size: 11.5px; padding: 3px 9px; border-radius: 999px; border: 1px solid transparent; color: var(--blue); background: var(--blue-s); font-weight: 500; }
.mock-tags .tag:nth-child(2) { color: var(--emerald); background: var(--emerald-s); }
.mock-tags .tag:nth-child(3) { color: var(--amber); background: var(--amber-s); }
.mock-tags .tag:nth-child(4) { color: var(--rose); background: var(--rose-s); }
.tag b { font-weight: 600; margin-right: 3px; }
.cand { border: 1px solid var(--line); border-radius: 11px; padding: 10px 12px; margin-bottom: 8px; transition: border-color .2s, opacity .2s; }
.cand.win { border-color: var(--accent); background: var(--accent-soft); }
.cand.out { opacity: .5; }
.cand-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 13.5px; }
.cand-top b { font-weight: 600; }
.badge { display: inline-flex; align-items: center; height: 20px; padding: 0 8px; border-radius: 999px; font-size: 11px; font-weight: 600; background: var(--bg-3); color: var(--ink-2); margin-left: 6px; }
.badge.dark { background: var(--grad); color: #fff; }
.badge.good { background: var(--good-soft); color: var(--good); }
.badge.blue { background: var(--accent-soft); color: var(--accent); }
.badge.amber { background: var(--amber-s); color: var(--amber); }
.badge.rose { background: var(--rose-s); color: var(--rose); }
.qbar { position: relative; height: 6px; background: var(--bg-3); border-radius: 6px; margin: 9px 0 6px; }
.qbar i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 6px; background: var(--grad); transition: width .35s; }
.cand-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); }
.verdict { display: flex; align-items: center; gap: 10px; padding: 11px 13px; border-radius: 11px; background: var(--bg-2); border: 1px solid var(--line); margin-bottom: 12px; font-size: 13px; }
.verdict .v-i { width: 28px; height: 28px; border-radius: 8px; background: var(--grad); color: #fff; display: grid; place-items: center; }

/* providers strip */
.strip { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 34px; color: var(--faint); font-weight: 600; font-size: 15px; letter-spacing: -.01em; }
.strip span { transition: color .15s, transform .15s; }
.strip span:nth-child(6n+1) { color: color-mix(in srgb, var(--blue) 70%, var(--faint)); }
.strip span:nth-child(6n+2) { color: color-mix(in srgb, var(--cyan) 70%, var(--faint)); }
.strip span:nth-child(6n+3) { color: color-mix(in srgb, var(--emerald) 70%, var(--faint)); }
.strip span:nth-child(6n+4) { color: color-mix(in srgb, var(--amber) 70%, var(--faint)); }
.strip span:nth-child(6n+5) { color: color-mix(in srgb, var(--rose) 70%, var(--faint)); }
.strip span:nth-child(6n) { color: color-mix(in srgb, var(--indigo) 70%, var(--faint)); }
.strip span:hover { transform: translateY(-1px); }
.strip span:hover { color: var(--accent); }

/* ---------- grids & cards */
.grid { display: grid; gap: 20px; }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 960px) { .g-3, .g-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .g-2, .g-3, .g-4 { grid-template-columns: 1fr; } }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; transition: border-color .15s; }
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); box-shadow: 0 10px 30px -22px rgba(37,99,235,.55); }
.card.t-blue { background: linear-gradient(160deg, var(--blue-s), transparent 62%); border-color: color-mix(in srgb, var(--blue) 22%, var(--line)); }
.card.t-cyan { background: linear-gradient(160deg, var(--cyan-s), transparent 62%); border-color: color-mix(in srgb, var(--cyan) 22%, var(--line)); }
.card.t-emerald { background: linear-gradient(160deg, var(--emerald-s), transparent 62%); border-color: color-mix(in srgb, var(--emerald) 22%, var(--line)); }
.card.t-amber { background: linear-gradient(160deg, var(--amber-s), transparent 62%); border-color: color-mix(in srgb, var(--amber) 22%, var(--line)); }
.card.t-rose { background: linear-gradient(160deg, var(--rose-s), transparent 62%); border-color: color-mix(in srgb, var(--rose) 22%, var(--line)); }
.card.t-indigo { background: linear-gradient(160deg, var(--indigo-s), transparent 62%); border-color: color-mix(in srgb, var(--indigo) 22%, var(--line)); }
.ico { box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 18%, transparent); }
.card h3 { margin: 16px 0 8px; font-size: 18px; letter-spacing: -.015em; }
.card p { color: var(--muted); font-size: 15px; margin: 0; }
.ico { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); }
.ico.mono-i { background: var(--bg-3); color: var(--ink); }
.ico.c-blue { background: var(--blue-s); color: var(--blue); }
.ico.c-cyan { background: var(--cyan-s); color: var(--cyan); }
.ico.c-emerald { background: var(--emerald-s); color: var(--emerald); }
.ico.c-amber { background: var(--amber-s); color: var(--amber); }
.ico.c-rose { background: var(--rose-s); color: var(--rose); }
.ico.c-indigo { background: var(--indigo-s); color: var(--indigo); }
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.bento .card { grid-column: span 2; }
.bento .card.wide { grid-column: span 3; }
.bento .card.xl { grid-column: span 4; }
@media (max-width: 960px) { .bento { grid-template-columns: 1fr 1fr; } .bento .card, .bento .card.wide, .bento .card.xl { grid-column: span 1; } }
@media (max-width: 640px) { .bento { grid-template-columns: 1fr; } }
.card-visual { margin-top: 22px; }
.mini-bars { display: flex; align-items: flex-end; gap: 5px; height: 70px; }
.mini-bars i { flex: 1; border-radius: 4px 4px 0 0; background: var(--grad); opacity: .85; }
.mini-bars i:nth-child(odd) { background: var(--bg-3); opacity: 1; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.step { position: relative; padding-top: 24px; border-top: 1px solid var(--line); }
.step { border-top: 2px solid var(--line); padding-top: 20px; }
.step::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 9px;
  font-family: var(--font); font-size: 13px; font-weight: 700; color: #fff; background: var(--accent); margin-bottom: 4px; }
.steps .step:nth-child(1) { border-top-color: var(--blue); } .steps .step:nth-child(1)::before { background: var(--blue); }
.steps .step:nth-child(2) { border-top-color: var(--cyan); } .steps .step:nth-child(2)::before { background: var(--cyan); }
.steps .step:nth-child(3) { border-top-color: var(--emerald); } .steps .step:nth-child(3)::before { background: var(--emerald); }
.steps .step:nth-child(4) { border-top-color: var(--amber); } .steps .step:nth-child(4)::before { background: var(--amber); }
.step h3 { font-size: 17px; margin: 10px 0 8px; }
.step p { color: var(--muted); font-size: 14.5px; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* split feature rows */
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.row2 + .row2 { margin-top: 96px; }
.row2.rev > :first-child { order: 2; }
@media (max-width: 900px) { .row2 { grid-template-columns: 1fr; gap: 32px; } .row2.rev > :first-child { order: 0; } }
.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; color: var(--ink-2); font-size: 15.5px; }
.checks .ic { color: var(--emerald); margin-top: 4px; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.stat { padding: 28px; border-right: 1px solid var(--line); }
.stats .stat:nth-child(1) { background: var(--blue-s); } .stats .stat:nth-child(2) { background: var(--cyan-s); }
.stats .stat:nth-child(3) { background: var(--emerald-s); } .stats .stat:nth-child(4) { background: var(--amber-s); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-size: 34px; letter-spacing: -.035em; font-weight: 650; }
.stats .stat:nth-child(1) b { color: var(--blue); } .stats .stat:nth-child(2) b { color: var(--cyan); }
.stats .stat:nth-child(3) b { color: var(--emerald); } .stats .stat:nth-child(4) b { color: var(--amber); }
.stat span { color: var(--muted); font-size: 14px; }
@media (max-width: 800px) { .stats { grid-template-columns: 1fr 1fr; } .stat:nth-child(2) { border-right: 0; } .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }

/* comparison table */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.tbl th, .tbl td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.tbl thead th { font-size: 12.5px; color: var(--muted); font-weight: 600; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.tbl thead th.hl { background: var(--accent-soft); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl .yes { color: var(--good); font-weight: 600; }
.tbl .no { color: var(--faint); }
.tbl .hl { background: var(--accent-soft); }
.tbl thead th.hl { color: var(--accent); }
.tbl .yes { color: var(--emerald); }

/* demo */
.demo { display: grid; grid-template-columns: 340px 1fr; gap: 28px; align-items: start; }
@media (max-width: 900px) { .demo { grid-template-columns: 1fr; } }
.demo-ctl { position: sticky; top: 90px; }
.seg { display: inline-flex; padding: 4px; background: var(--bg-3); border-radius: 11px; gap: 2px; flex-wrap: wrap; }
.seg button { border: 0; background: none; font: inherit; font-size: 13.5px; font-weight: 550; padding: 7px 13px; border-radius: 8px; color: var(--muted); cursor: pointer; }
.seg button.on { background: var(--bg); color: var(--accent); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
input[type=range].range { -webkit-appearance: none; appearance: none; width: 100%; height: 24px; background: transparent; cursor: pointer; }
input[type=range].range::-webkit-slider-runnable-track { height: 6px; border-radius: 6px; background: linear-gradient(90deg, var(--accent) var(--fill, 30%), var(--bg-3) var(--fill, 30%)); }
input[type=range].range::-moz-range-track { height: 6px; border-radius: 6px; background: var(--bg-3); }
input[type=range].range::-moz-range-progress { height: 6px; border-radius: 6px; background: var(--accent); }
input[type=range].range::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; margin-top: -7px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); box-shadow: 0 1px 3px rgba(0,0,0,.2); }
input[type=range].range::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.kv-big { font-size: 30px; font-weight: 650; letter-spacing: -.03em; }

/* pricing */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
@media (max-width: 900px) { .price-grid { grid-template-columns: 1fr; } }
.price { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px; background: var(--bg); }
.price.featured { border-color: transparent; box-shadow: 0 0 0 2px var(--accent), 0 18px 40px -28px rgba(37,99,235,.6); background: var(--grad-soft), var(--bg); }
.price.featured .amt { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.price.featured .amt small { color: var(--muted); -webkit-text-fill-color: var(--muted); }
.price h3 { font-size: 17px; }
.price .amt { font-size: 44px; font-weight: 680; letter-spacing: -.04em; margin: 16px 0 2px; }
.price .amt small { font-size: 15px; color: var(--muted); font-weight: 500; letter-spacing: 0; }
.price .desc { color: var(--muted); font-size: 14.5px; min-height: 44px; }
.price ul { list-style: none; padding: 0; margin: 22px 0 26px; display: grid; gap: 10px; font-size: 14.5px; flex: 1; align-content: start; }
.price li { display: flex; gap: 10px; color: var(--ink-2); }
.price li .ic { color: var(--emerald); margin-top: 3px; }
.packs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 800px) { .packs { grid-template-columns: 1fr 1fr; } }
.pack { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; text-align: center; transition: border-color .15s, transform .15s; }
.pack:hover { border-color: var(--accent); transform: translateY(-2px); }
.pack b { display: block; font-size: 22px; letter-spacing: -.02em; }
.packs .pack:nth-child(1) .p { color: var(--blue); } .packs .pack:nth-child(2) .p { color: var(--cyan); }
.packs .pack:nth-child(3) .p { color: var(--emerald); } .packs .pack:nth-child(4) .p { color: var(--amber); }
.pack .p { margin-top: 8px; font-weight: 600; color: var(--accent); }
.calc { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 800px) { .calc { grid-template-columns: 1fr; } }
.calc label { display: block; font-size: 14px; font-weight: 550; margin-bottom: 8px; }
.calc .out { background: var(--bg-2); border-radius: var(--radius); padding: 22px; }
.calc .out div { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--line-2); font-size: 14.5px; }
.calc .out div:last-child { border: 0; font-weight: 650; font-size: 16px; }

/* faq */
.faq details { border-bottom: 1px solid var(--line); }
.faq details[open] { background: linear-gradient(180deg, var(--accent-soft), transparent 70%); border-radius: 10px; padding: 0 14px; margin: 0 -14px; }
.faq summary { list-style: none; cursor: pointer; padding: 20px 0; font-weight: 600; font-size: 16.5px; display: flex; justify-content: space-between; gap: 16px; transition: color .12s; }
.faq summary:hover { color: var(--accent); }
.faq details[open] summary { color: var(--accent); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 400; font-size: 22px; line-height: 1; color: var(--muted); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 0 20px; color: var(--muted); max-width: 72ch; }

/* cta */
.cta { border-radius: 24px; background: var(--grad-deep); color: #fff; padding: 64px; display: grid; grid-template-columns: 1.3fr auto; gap: 32px; align-items: center; position: relative; overflow: hidden; }
.cta h2 { color: #fff; }
.cta::after { content: ""; position: absolute; width: 420px; height: 420px; right: -120px; bottom: -220px; border-radius: 50%; background: radial-gradient(closest-side, rgba(34,211,238,.35), transparent); }
.cta > * { position: relative; z-index: 1; }
.cta p { color: rgba(255,255,255,.72); margin: 12px 0 0; font-size: 17px; }
.cta .btn.primary { background: #fff; color: #0a1330; border-color: #fff; box-shadow: none; }
.cta .btn.primary:hover { filter: none; opacity: .9; }
.cta .btn { background: transparent; color: #fff; border-color: rgba(255,255,255,.3); }
.cta .btn:hover { background: rgba(255,255,255,.1); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 800px) { .cta { grid-template-columns: 1fr; padding: 40px 28px; } }

/* page hero (inner pages) */
.page-hero { padding: 80px 0 56px; border-bottom: 1px solid var(--line-2); background: var(--grad-soft); position: relative; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; width: 460px; height: 460px; right: -120px; top: -220px; border-radius: 50%; background: radial-gradient(closest-side, var(--cyan-s), transparent); pointer-events: none; }
.page-hero > .wrap { position: relative; z-index: 1; }
.page-hero .lead { margin-top: 18px; }

/* ---------- docs */
.docs { display: grid; grid-template-columns: 232px minmax(0, 1fr) 200px; gap: 48px; padding-top: 40px; padding-bottom: 96px; }
.docs-side { position: sticky; top: 88px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; font-size: 14px; }
.docs-side h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--faint); margin: 22px 0 8px; font-weight: 600; }
.docs-side h4:first-child { margin-top: 0; }
.docs-side a { display: block; padding: 6px 10px; border-radius: 7px; color: var(--ink-2); margin-left: -10px; }
.docs-side a:hover { color: var(--ink); background: var(--bg-3); }
.docs-side a.on { color: var(--accent); font-weight: 600; background: var(--accent-soft); }
.docs-toc { position: sticky; top: 88px; align-self: start; font-size: 13px; }
.docs-toc h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--faint); margin-bottom: 10px; font-weight: 600; }
.docs-toc a { display: block; padding: 4px 0 4px 12px; color: var(--muted); border-left: 1px solid var(--line); }
.docs-toc a.on { color: var(--accent); border-left-color: var(--accent); }
.docs-search { width: 100%; height: 36px; border-radius: 9px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); padding: 0 12px; font: inherit; font-size: 13.5px; margin-bottom: 18px; }
@media (max-width: 1100px) { .docs { grid-template-columns: 220px minmax(0, 1fr); } .docs-toc { display: none; } }
@media (max-width: 800px) { .docs { grid-template-columns: 1fr; gap: 24px; } .docs-side { position: static; max-height: none; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; } }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.crumbs a:hover { color: var(--ink); }
.prose { max-width: 760px; font-size: 16px; }
.prose h1 { font-size: 38px; letter-spacing: -.035em; margin-bottom: 14px; }
.prose > .lead { margin-bottom: 36px; }
.prose h2 { font-size: 24px; margin: 52px 0 14px; padding-top: 8px; scroll-margin-top: 90px; }
.prose h2::before { content: ""; display: block; width: 34px; height: 3px; border-radius: 3px; background: var(--grad); margin-bottom: 14px; }
.prose h3 { font-size: 18px; margin: 32px 0 10px; scroll-margin-top: 90px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 1em; }
.prose li { margin: 6px 0; }
.prose a:not(.btn):not(.dcard) { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose code:not(pre code) { font-family: var(--mono); font-size: .86em; background: var(--bg-3); border: 1px solid var(--line-2); padding: 1px 6px; border-radius: 6px; color: var(--ink); }
.prose table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 16px 0 24px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.prose th { font-size: 12.5px; color: var(--muted); font-weight: 600; border-bottom-color: var(--line); white-space: nowrap; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
.doc-pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); }
.doc-pager a { flex: 1; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; text-decoration: none !important; color: var(--ink) !important; }
.doc-pager a:hover { border-color: var(--faint); }
.doc-pager small { display: block; color: var(--muted); font-size: 12.5px; }
.doc-pager .next { text-align: right; }
.dcards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 24px 0; }
@media (max-width: 640px) { .dcards { grid-template-columns: 1fr; } }
.dcard { display: block; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; transition: border-color .15s; }
.dcard:hover { border-color: var(--accent); box-shadow: 0 10px 26px -22px rgba(37,99,235,.7); }
.dcard b { display: flex; align-items: center; gap: 8px; font-size: 15.5px; color: var(--ink); }
.dcard b .ic { color: var(--accent); }
.dcards .dcard:nth-child(2) b .ic { color: var(--cyan); } .dcards .dcard:nth-child(3) b .ic { color: var(--emerald); }
.dcards .dcard:nth-child(4) b .ic { color: var(--amber); } .dcards .dcard:nth-child(5) b .ic { color: var(--rose); }
.dcards .dcard:nth-child(6) b .ic { color: var(--indigo); }
.dcard span { display: block; font-size: 14px; color: var(--muted); margin-top: 4px; }

/* code */
.code { position: relative; background: #0a0a0a; border: 1px solid #1f1f22; border-radius: 12px; margin: 16px 0 22px; }
.code pre { margin: 0; padding: 18px 20px; overflow-x: auto; }
.code code { font-family: var(--mono); font-size: 13px; line-height: 1.7; color: #e4e4e7; }
.code-copy { position: absolute; top: 9px; right: 9px; background: #1c1c1f; border: 1px solid #2a2a2e; color: #d4d4d8; border-radius: 7px; font: inherit; font-size: 12px; padding: 4px 10px; cursor: pointer; opacity: 0; transition: opacity .15s; }
.code:hover .code-copy, .code-copy:focus { opacity: 1; }
.code-lang { position: absolute; top: 11px; right: 14px; transition: opacity .15s; font-size: 11px; color: #71717a; font-family: var(--mono); }
.tabs { margin: 16px 0 22px; }
.tab-list { display: flex; gap: 2px; border-bottom: 1px solid var(--line); }
.tab { border: 0; background: none; font: inherit; font-size: 13.5px; font-weight: 550; color: var(--muted); padding: 9px 14px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab.on { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.on { display: block; }
.tab-panel .code { margin-top: 12px; }

/* callouts & math */
.note { border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px; padding: 14px 18px; margin: 20px 0; background: var(--blue-s); font-size: 15px; color: var(--ink-2); }
.note.warn { border-left-color: var(--amber); background: var(--amber-s); }
.note b { color: var(--ink); }
.math { font-family: "Cambria Math", "STIX Two Math", Georgia, serif; font-size: 17px; background: linear-gradient(120deg, var(--blue-s), var(--cyan-s)); border: 1px solid color-mix(in srgb, var(--blue) 18%, var(--line-2)); border-radius: 10px; padding: 14px 18px; margin: 12px 0; overflow-x: auto; color: var(--ink); }
.math small { font-family: var(--font); font-size: 13px; color: var(--muted); margin-left: 12px; }
.endpoint { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 14px; padding: 12px 16px; border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--line)); border-radius: 10px; margin: 12px 0; background: linear-gradient(120deg, var(--blue-s), transparent 70%); }
.method { font-size: 11.5px; font-weight: 700; padding: 3px 8px; border-radius: 6px; background: var(--accent-soft); color: var(--accent); }
.method.get { background: var(--good-soft); color: var(--good); }

/* forms */
.form { display: grid; gap: 16px; }
.form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form .two { grid-template-columns: 1fr; } }
.field label { display: block; font-size: 14px; font-weight: 550; margin-bottom: 7px; }
.input, textarea.input, select.input { width: 100%; height: 44px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); font: inherit; font-size: 15px; transition: border-color .12s, box-shadow .12s; }
textarea.input { height: auto; padding: 12px 14px; resize: vertical; }
.input:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px var(--accent-soft); }
.hp { position: absolute; left: -9999px; }
.alert { padding: 14px 18px; border-radius: 10px; font-size: 15px; margin-bottom: 20px; border: 1px solid var(--line); }
.alert.ok { background: var(--good-soft); color: var(--good); border-color: transparent; }
.alert.err { background: rgba(220,38,38,.07); color: var(--bad); border-color: transparent; }

/* footer */
.site-foot { border-top: 1px solid var(--line); padding: 64px 0 40px; margin-top: 0; background: var(--bg); position: relative; }
.site-foot::before { content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 3px; background: var(--grad); }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-grid h4 { font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 14px; letter-spacing: 0; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; font-size: 14.5px; }
.foot-grid a { color: var(--ink-2); }
.foot-grid a:hover { color: var(--accent); }
.foot-base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line-2); font-size: 13.5px; color: var(--muted); }

/* reveal on scroll (progressive enhancement, cheap) */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* blog / generic */
.post-list { display: grid; gap: 20px; }
.entry { max-width: 760px; margin: 0 auto; }
.entry-meta { color: var(--muted); font-size: 14px; margin: 12px 0 32px; }
.code:hover .code-lang { opacity: 0; }