/* APIVN site styles */
:root {
  --bg: #f6f6fc; --card: #ffffff; --ink: #17152f; --ink-2: #3f3c5c; --mute: #6b6889; --hair: #e5e3f3; --hair-2: #d3d0ea;
  --brand: #5b3df5; --brand-2: #4a2fd6; --brand-3: #7c5cff; --brand-soft: #eeeaff; --accent: #22d3ee; --accent-ink: #0891b2;
  --night: #0f0d24; --night-2: #17143a; --night-3: #221d55; --on-night: #ecebf7; --on-night-2: #a8a4cc;
  --ok: #16a34a; --ok-soft: #dcfce7; --warn-soft: #fff4d6; --warn-ink: #8a5a00;
  --r: 14px; --r-md: 18px; --r-lg: 22px;
  --shadow-xs: 0 1px 2px rgba(23,21,47,.06);
  --shadow-sm: 0 2px 8px -3px rgba(23,21,47,.12), 0 1px 2px rgba(23,21,47,.04);
  --shadow: 0 14px 32px -20px rgba(23,21,47,.42), 0 3px 8px -5px rgba(23,21,47,.12);
  --shadow-lg: 0 34px 64px -34px rgba(23,21,47,.5), 0 8px 20px -14px rgba(23,21,47,.2);
  --ring: 0 0 0 3px rgba(91,61,245,.3);
  --ease: cubic-bezier(.22,.61,.36,1);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 16.5px; line-height: 1.65; color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; }
img, svg, video { max-width: 100%; height: auto; }
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 6px; }
code, pre { font-family: var(--mono); }
code { font-size: .92em; padding: 2px 7px; border-radius: 7px; background: var(--brand-soft); color: var(--brand-2); }
pre.code { margin: 18px 0; padding: 18px 20px; border-radius: var(--r); background: var(--night); color: var(--on-night); font-size: 14.5px; line-height: 1.6; overflow-x: auto; box-shadow: var(--shadow); }
pre.code code { padding: 0; background: none; color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -.018em; }
.shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.jump { position: absolute; left: -999px; top: 8px; padding: 8px 12px; background: #fff; border-radius: 8px; z-index: 50; }
.jump:focus { left: 12px; }

/* --- masthead (dark) --- */
.mast { color: var(--on-night); background: radial-gradient(1200px 500px at 85% -10%, rgba(124,92,255,.35), transparent 60%), linear-gradient(160deg, var(--night) 0%, var(--night-2) 60%, #1a1550 100%); }
.mast__row { display: flex; align-items: center; gap: 28px; min-height: 76px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: #fff; letter-spacing: .02em; }
.logo:hover { text-decoration: none; }
.logo img { width: 32px; height: 32px; border-radius: 9px; }
.logo em { font-style: normal; font-weight: 600; font-size: 13px; padding: 3px 9px; border-radius: 999px; background: rgba(255,255,255,.12); color: var(--on-night-2); }
.logo--dark { color: var(--ink); }
.menu { display: flex; gap: 6px; margin-left: 8px; }
.menu a { padding: 8px 12px; border-radius: 10px; color: var(--on-night-2); font-weight: 600; font-size: 15px; transition: background-color .18s var(--ease), color .18s var(--ease); }
.menu a:hover, .menu a[aria-current="page"] { color: #fff; background: rgba(255,255,255,.1); text-decoration: none; }
.menu__login { display: none; }
.mast__cta { margin-left: auto; display: flex; gap: 10px; }
.menu-toggle, .menu-btn { display: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 12px; border: 1px solid var(--brand); background: linear-gradient(160deg, var(--brand-3), var(--brand) 60%); color: #fff; font-weight: 700; font-size: 15px; white-space: nowrap; box-shadow: 0 10px 22px -14px rgba(91,61,245,.95); transition: transform .18s var(--ease), box-shadow .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease); }
.btn:hover { background: var(--brand-2); border-color: var(--brand-2); text-decoration: none; transform: translateY(-1px); box-shadow: 0 16px 28px -16px rgba(91,61,245,.95); }
.btn:active { transform: translateY(0); box-shadow: 0 6px 14px -12px rgba(91,61,245,.9); }
.btn--ghost { background: var(--card); color: var(--brand-2); border-color: var(--hair-2); box-shadow: var(--shadow-xs); }
.btn--ghost:hover { background: var(--brand-soft); border-color: var(--brand); box-shadow: var(--shadow-sm); }
.btn--onDark { background: rgba(255,255,255,.04); color: #fff; border-color: rgba(255,255,255,.28); box-shadow: none; }
.btn--onDark:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn--big { min-height: 54px; padding: 14px 26px; font-size: 17px; }

/* --- page title block --- */
.crown { padding: 44px 0 52px; }
.crown__kicker { margin: 0 0 12px; font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.crown h1 { font-size: clamp(30px, 4.2vw, 46px); font-weight: 800; color: #fff; max-width: 22ch; }
.crown__lede { margin: 14px 0 0; max-width: 62ch; font-size: 18px; color: var(--on-night-2); }
.crown__lede a { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

/* --- reading layout --- */
.reading { padding: 34px 0 72px; }
.onpage { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 30px; padding: 12px 14px; border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--card); box-shadow: var(--shadow-sm); }
.onpage span { font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: var(--mute); margin-right: 6px; }
.onpage a { padding: 6px 12px; border-radius: 999px; background: var(--bg); color: var(--ink-2); font-size: 14px; font-weight: 600; transition: background-color .18s var(--ease), color .18s var(--ease); }
.onpage a:hover { background: var(--brand-soft); color: var(--brand-2); text-decoration: none; }
.prose { max-width: 800px; }
.prose > h2 { margin: 46px 0 14px; padding-left: 14px; border-left: 4px solid var(--brand); font-size: 24px; scroll-margin-top: 90px; }
.prose > h2:first-child { margin-top: 0; }
.prose h3 { margin: 28px 0 10px; font-size: 18.5px; }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 16px; }
.prose li { margin: 6px 0; }
.prose .lead { font-size: 19px; color: var(--ink-2); }
.prose .meta { display: inline-block; margin: -4px 0 18px; padding: 4px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-2); font-size: 13px; font-weight: 700; }
.fine { font-size: 14px; color: var(--mute); }
.note { margin: 22px 0; padding: 16px 18px 16px 20px; border-radius: var(--r-md); background: var(--brand-soft); border: 1px solid #ddd5ff; border-left: 4px solid var(--brand); }
.note p { margin: 0; }
.note--warn { background: var(--warn-soft); border-color: #f4dfae; border-left-color: #f59e0b; }
.note--warn strong { color: var(--warn-ink); }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; margin: 20px 0 28px; }
.tile { display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--card); color: var(--ink); box-shadow: var(--shadow-sm); transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease); }
.tile:hover { border-color: var(--brand); text-decoration: none; transform: translateY(-3px); box-shadow: var(--shadow); }
.tile strong { color: var(--brand-2); }
.tile span { font-size: 14px; color: var(--mute); }
.scroll { overflow-x: auto; margin: 18px 0 10px; border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--card); box-shadow: var(--shadow-sm); }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; }
.tbl th { text-align: left; padding: 13px 16px; font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--mute); background: #fafaff; border-bottom: 1px solid var(--hair); }
.tbl td { padding: 13px 16px; border-bottom: 1px solid var(--hair); vertical-align: top; }
.tbl tbody tr { transition: background-color .15s var(--ease); }
.tbl tbody tr:hover { background: #faf9ff; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl .r { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.tbl td strong { display: block; }
.tbl td span { display: block; font-size: 13px; color: var(--mute); }
.tbl .sub { margin-top: 2px; }
.qa { margin: 10px 0; border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--card); box-shadow: var(--shadow-xs); transition: border-color .18s var(--ease), box-shadow .18s var(--ease); }
.qa:hover { border-color: var(--hair-2); box-shadow: var(--shadow-sm); }
.qa[open] { border-color: var(--hair-2); box-shadow: var(--shadow-sm); }
.qa summary { padding: 15px 18px; cursor: pointer; font-weight: 700; list-style: none; position: relative; padding-right: 48px; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: ""; position: absolute; right: 18px; top: 50%; width: 9px; height: 9px; margin-top: -6px; border-right: 2px solid var(--brand); border-bottom: 2px solid var(--brand); transform: rotate(45deg); transition: transform .2s var(--ease); }
.qa[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.qa > div { padding: 0 18px 16px; }
.qa > div p { margin: 0; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 12px 0 22px; display: grid; gap: 12px; }
.steps li { counter-increment: s; position: relative; padding: 16px 18px 16px 64px; border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--card); box-shadow: var(--shadow-xs); }
.steps li::before { content: counter(s); position: absolute; left: 15px; top: 14px; width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center; background: linear-gradient(150deg, var(--brand-3), var(--brand)); color: #fff; font-weight: 800; box-shadow: 0 8px 16px -10px rgba(91,61,245,.9); }
.steps b { display: block; margin-bottom: 2px; }
.steps span { color: var(--ink-2); font-size: 15px; }
.wide { margin: 0 0 24px; }
.wide img { display: block; width: 100%; border-radius: var(--r-lg); border: 1px solid var(--hair); box-shadow: var(--shadow); }
figure.shot { margin: 20px 0 26px; }
figure.shot img { display: block; width: 100%; height: auto; border: 1px solid var(--hair); border-radius: var(--r-md); background: #fff; box-shadow: var(--shadow-sm); }
figure.shot figcaption { margin-top: 10px; font-size: 14px; color: var(--mute); }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; }
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 700; background: var(--bg); color: var(--mute); }
.pill--on { background: var(--ok-soft); color: var(--ok); }
.pill--off { background: var(--warn-soft); color: var(--warn-ink); }

/* models table */
.filters { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 0 0 16px; }
.filters input, .filters select { font: inherit; padding: 11px 13px; border: 1px solid var(--hair-2); border-radius: 11px; background: var(--card); color: var(--ink); min-width: 200px; box-shadow: var(--shadow-xs); transition: border-color .18s var(--ease), box-shadow .18s var(--ease); }
.filters input { min-width: min(340px, 100%); }
.filters input:focus, .filters select:focus { outline: none; border-color: var(--brand); box-shadow: var(--ring); }
.tbl--models td:first-child { min-width: 220px; }
.more { margin-top: 6px; }
.more summary { cursor: pointer; font-size: 13px; color: var(--brand-2); font-weight: 600; }
.more p { margin: 6px 0 0; font-size: 14px; }
code.id { cursor: copy; }
code.id.copied { background: var(--ok-soft); color: var(--ok); }
.prose, .prose .scroll { max-width: none; }
.is-page .prose { max-width: 820px; }
.is-page .reading:has(.tbl--models) .prose { max-width: none; }

/* --- home --- */
.is-home .mast { background: var(--night); }
.herowrap { position: relative; overflow: hidden; color: var(--on-night); background: radial-gradient(900px 420px at 50% 0%, rgba(124,92,255,.45), transparent 65%), linear-gradient(180deg, var(--night) 0%, var(--night-2) 100%); }
.herowrap::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px); background-size: 58px 58px; -webkit-mask-image: radial-gradient(760px 400px at 50% 4%, #000, transparent 70%); mask-image: radial-gradient(760px 400px at 50% 4%, #000, transparent 70%); }
.hero { position: relative; z-index: 1; padding: 40px 0 70px; text-align: center; }
.hero__tag { display: inline-flex; gap: 8px; align-items: center; padding: 6px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.06); color: var(--on-night-2); font-size: 13.5px; font-weight: 600; }
.hero h1 { margin: 22px auto 0; max-width: none; font-size: clamp(36px, 6vw, 68px); font-weight: 800; color: #fff; letter-spacing: -.03em; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, #22d3ee, #a5b4fc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__lede { margin: 20px auto 0; max-width: 60ch; font-size: 19px; color: var(--on-night-2); }
.hero__cta { display: flex; justify-content: center; gap: 12px; margin: 32px 0 0; flex-wrap: wrap; }
.hero__fine { margin: 14px 0 0; font-size: 14px; color: var(--on-night-2); }
.hero__brands { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 40px 0 0; }
.hero__brands span { padding: 7px 15px; border-radius: 999px; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.05); color: #cdc9e8; font-weight: 600; font-size: 14.5px; letter-spacing: .01em; }
.term { margin: -30px auto 0; position: relative; z-index: 2; }
.term__box { border-radius: var(--r-lg); background: #0a0820; border: 1px solid var(--night-3); box-shadow: 0 40px 80px -40px rgba(0,0,0,.75), 0 12px 28px -20px rgba(0,0,0,.5); overflow: hidden; }
.term__bar { display: flex; align-items: center; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--night-3); color: var(--on-night-2); font-size: 13px; font-family: var(--mono); }
.term__bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; background: #3a3670; }
.term__bar i:nth-child(1) { background: #f87171; } .term__bar i:nth-child(2) { background: #fbbf24; } .term__bar i:nth-child(3) { background: #34d399; }
.term pre { margin: 0; padding: 22px 24px; color: var(--on-night); font-size: 14.5px; line-height: 1.6; overflow-x: auto; }
.term .c { color: #22d3ee; } .term .s { color: #a5b4fc; } .term .g { color: #34d399; } .term .d { color: var(--on-night-2); }
.sec { padding: 76px 0; }
.sec--alt { background: var(--card); border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair); }
.sec__head { max-width: 62ch; margin: 0 0 36px; }
.sec__head h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; letter-spacing: -.025em; }
.sec__head p { margin: 12px 0 0; font-size: 17.5px; color: var(--ink-2); }
.stepper { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: st; }
.stepper article { counter-increment: st; position: relative; padding: 28px 24px 26px; border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--hair); box-shadow: var(--shadow-sm); transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease); }
.stepper article:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--hair-2); }
.stepper article::before { content: "0" counter(st); display: inline-grid; place-items: center; width: 38px; height: 38px; margin-bottom: 14px; border-radius: 12px; background: linear-gradient(150deg, var(--brand-3), var(--brand)); color: #fff; font-size: 13px; font-weight: 800; letter-spacing: .04em; box-shadow: 0 10px 20px -12px rgba(91,61,245,.95); }
.stepper h3 { margin: 0 0 8px; font-size: 20px; }
.stepper p { margin: 0; color: var(--ink-2); }
.why { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 14px; }
.why > div { display: grid; grid-template-columns: 46px 1fr; gap: 16px; padding: 22px; border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--card); box-shadow: var(--shadow-xs); transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease); }
.why > div:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--hair-2); }
.why > div > div { display: block; }
.why i { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(150deg, var(--brand-soft), #e0d9ff); color: var(--brand); font-style: normal; }
.why i svg { width: 23px; height: 23px; display: block; }
.why h3 { font-size: 17px; margin-bottom: 4px; }
.why p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.sec--alt .why > div { background: #fbfaff; }
.cta { position: relative; overflow: hidden; padding: 68px 0; background: radial-gradient(700px 300px at 82% 0%, rgba(124,92,255,.5), transparent 62%), linear-gradient(135deg, var(--night) 0%, #2a1f8a 100%); color: #fff; }
.cta__row { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -.025em; }
.cta p { margin: 8px 0 0; color: var(--on-night-2); font-size: 17px; }
.cta .btn { background: #fff; color: var(--brand-2); border-color: #fff; box-shadow: 0 16px 32px -20px rgba(0,0,0,.8); }
.cta .btn:hover { background: var(--accent); border-color: var(--accent); color: var(--night); }
.home-models .scroll { margin-top: 0; }

/* --- docs bar --- */
.docbar { background: rgba(255,255,255,.88); -webkit-backdrop-filter: saturate(160%) blur(10px); backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--hair); position: sticky; top: 0; z-index: 20; }
.docbar__row { display: flex; gap: 4px; overflow-x: auto; padding: 8px 0; scrollbar-width: none; }
.docbar__row::-webkit-scrollbar { display: none; }
.docbar a { padding: 8px 12px; border-radius: 10px; white-space: nowrap; color: var(--ink-2); font-weight: 600; font-size: 14.5px; transition: background-color .18s var(--ease), color .18s var(--ease); }
.docbar a:hover, .docbar a[aria-current="page"] { background: var(--brand-soft); color: var(--brand-2); text-decoration: none; }
.mast--docs .crown { padding: 34px 0 40px; }

/* --- footer --- */
.foot { padding: 56px 0 26px; background: var(--card); border-top: 1px solid var(--hair); }
.foot__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.foot__brand p { margin: 12px 0 0; max-width: 40ch; color: var(--ink-2); font-size: 15px; }

.foot__col h4 { margin: 0 0 10px; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); }
.foot__col a { display: block; padding: 4px 0; color: var(--ink-2); font-size: 15px; }
.foot__bar { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--hair); font-size: 13.5px; color: var(--mute); }
.foot--slim { padding: 22px 0; }
.foot--slim .foot__bar { margin-top: 0; padding-top: 0; border-top: 0; }

/* --- responsive --- */
@media (max-width: 960px) {
  .stepper { grid-template-columns: 1fr; }
  .why { grid-template-columns: 1fr; }
  .foot__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .mast__row { gap: 12px; }
  .mast__cta { display: none; }
  .menu-btn { display: flex; flex-direction: column; justify-content: center; gap: 5px; margin-left: auto; width: 44px; height: 44px; border-radius: 10px; border: 1px solid rgba(255,255,255,.2); cursor: pointer; padding: 0 11px; }
  .menu-btn span { display: block; height: 2px; background: #fff; border-radius: 2px; }
  .menu { display: none; position: absolute; left: 0; right: 0; top: 76px; z-index: 30; flex-direction: column; gap: 2px; margin: 0; padding: 10px 20px 16px; background: var(--night-2); border-bottom: 1px solid var(--night-3); }
  .menu a { padding: 12px 14px; font-size: 16px; }
  .menu__login { display: block; margin-top: 6px; border: 1px solid rgba(255,255,255,.2); text-align: center; }
  .menu-toggle:checked ~ .menu { display: flex; }
  .mast { position: relative; }
  .crown { padding: 30px 0 36px; }
  .hero { padding: 26px 0 54px; }
  .hero__brands { gap: 8px; }
  .hero__brands span { padding: 6px 12px; font-size: 13.5px; }
  .term { margin-top: -20px; }
  .term pre { font-size: 13px; }
  .sec { padding: 54px 0; }
  .foot__grid { grid-template-columns: 1fr; gap: 22px; }
  .cta { padding: 54px 0; }
  .cta__row { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}