:root {
  --bg: #0a0c11;
  --bg-2: #0f1219;
  --bg-3: #151925;
  --line: #232838;
  --line-2: #2e3448;
  --text: #e9ecf3;
  --text-2: #aab1c3;
  --text-3: #7c849a;
  --amber: #f6a531;
  --amber-2: #ffcf7a;
  --cyan: #4fd1c5;
  --violet: #8b7cf6;
  --good: #46d39a;
  --radius: 14px;
  --radius-sm: 10px;
  --wrap: 1180px;
  --gutter: 24px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
:lang(en) h1, :lang(en) h2 { letter-spacing: -0.02em; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; background: var(--amber); color: #111; padding: 6px 12px; border-radius: 8px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 12, 17, 0.78);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; white-space: nowrap; }
.logo svg { width: 30px; height: 30px; flex: none; }
.logo small { font-weight: 500; color: var(--text-3); font-size: 13px; letter-spacing: 0.02em; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 15px; color: var(--text-2); }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.lang { font-size: 13px; color: var(--text-3); border: 1px solid var(--line-2); border-radius: 999px; padding: 3px 10px; white-space: nowrap; }
.lang b { color: var(--text); font-weight: 600; }
.lang:hover { border-color: var(--text-3); }
.menu-btn { display: none; background: none; border: 1px solid var(--line-2); color: var(--text); border-radius: 8px; width: 38px; height: 34px; cursor: pointer; }
.menu-btn span, .menu-btn span::before, .menu-btn span::after { display: block; width: 16px; height: 2px; background: currentColor; margin: 0 auto; position: relative; border-radius: 2px; }
.menu-btn span::before, .menu-btn span::after { content: ""; position: absolute; left: 0; }
.menu-btn span::before { top: -5px; }
.menu-btn span::after { top: 5px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 10px;
  font-weight: 600; font-size: 15px; white-space: nowrap; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s ease, background .15s ease, border-color .15s ease;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--amber-2), var(--amber)); color: #1a1205; box-shadow: 0 8px 24px -10px rgba(246, 165, 49, .6); }
.btn-ghost { background: rgba(255, 255, 255, 0.04); border-color: var(--line-2); color: var(--text); }
.btn-ghost:hover { border-color: var(--text-3); }
.btn-sm { height: 36px; padding: 0 14px; font-size: 14px; border-radius: 9px; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 88px 0 72px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0 -10%; z-index: -1;
  background:
    radial-gradient(600px 340px at 18% 30%, rgba(246, 165, 49, .16), transparent 70%),
    radial-gradient(520px 340px at 82% 20%, rgba(79, 209, 197, .12), transparent 70%),
    radial-gradient(640px 360px at 60% 85%, rgba(139, 124, 246, .10), transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: 1.02fr 1fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--amber-2); border: 1px solid rgba(246, 165, 49, .35); background: rgba(246, 165, 49, .08); padding: 4px 12px; border-radius: 999px; margin-bottom: 22px; }
.eyebrow i { width: 6px; height: 6px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.hero h1 { font-size: clamp(34px, 5vw, 56px); margin-bottom: 20px; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--amber-2), var(--amber) 45%, var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(16px, 1.6vw, 18px); color: var(--text-2); max-width: 560px; margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-size: 12.5px; color: var(--text-2); border: 1px solid var(--line-2); border-radius: 999px; padding: 3px 11px; background: rgba(255, 255, 255, .02); white-space: nowrap; }
.chip.hot { color: var(--amber-2); border-color: rgba(246, 165, 49, .4); }

.canvas-card {
  position: relative; border-radius: 18px; border: 1px solid var(--line-2);
  background: linear-gradient(180deg, rgba(21, 25, 37, .95), rgba(13, 16, 24, .95));
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .7), 0 0 0 1px rgba(255, 255, 255, .02) inset;
  overflow: hidden;
}
.canvas-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--line); font-size: 12px; color: var(--text-3); }
.canvas-bar .dots { display: flex; gap: 6px; margin-right: 6px; }
.canvas-bar .dots i { width: 9px; height: 9px; border-radius: 50%; background: #2b3042; }
.canvas-bar .title { color: var(--text-2); }
.canvas-bar .tag { margin-left: auto; color: var(--good); }
.canvas-svg { width: 100%; height: auto; }

/* ---------- strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip-item { padding: 26px 22px; border-left: 1px solid var(--line); }
.strip-item:first-child { border-left: 0; padding-left: 0; }
.strip-item b { display: block; font-size: 20px; margin-bottom: 4px; }
.strip-item span { color: var(--text-3); font-size: 14px; }

/* ---------- sections ---------- */
section { scroll-margin-top: 72px; }
.section { padding: 96px 0; }
.section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.kicker { font-size: 13px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--amber); margin-bottom: 12px; font-family: var(--mono); }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 14px; }
.section-head p { color: var(--text-2); font-size: 17px; margin: 0; }

.grid { display: grid; gap: 18px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card { background: var(--bg-3); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; position: relative; }
.section.alt .card { background: #121623; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--text-2); font-size: 15px; margin-bottom: 0; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; color: var(--text-2); font-size: 14.5px; }
.card li { position: relative; padding-left: 18px; margin-bottom: 7px; }
.card li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 6px; height: 6px; border-radius: 2px; background: var(--amber); }
.icon { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 18px; background: rgba(246, 165, 49, .1); border: 1px solid rgba(246, 165, 49, .25); color: var(--amber-2); }
.icon svg { width: 22px; height: 22px; }
.icon.c { background: rgba(79, 209, 197, .1); border-color: rgba(79, 209, 197, .28); color: var(--cyan); }
.icon.v { background: rgba(139, 124, 246, .12); border-color: rgba(139, 124, 246, .3); color: #b6acff; }

.audience .card { padding-top: 30px; }
.audience .tag-line { font-size: 13px; color: var(--text-3); margin-bottom: 6px; font-family: var(--mono); }

/* feature list */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature { background: var(--bg); padding: 26px 24px; }
.section.alt .feature { background: var(--bg-2); }
.feature h3 { font-size: 17px; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.feature h3 .n { font-family: var(--mono); font-size: 12px; color: var(--amber); border: 1px solid rgba(246, 165, 49, .35); border-radius: 6px; padding: 0 6px; }
.feature p { color: var(--text-2); font-size: 14.5px; margin: 0; }

/* models */
.models { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.model-col { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: var(--bg-3); }
.model-col.own { border-color: rgba(246, 165, 49, .35); background: linear-gradient(180deg, rgba(246, 165, 49, .07), rgba(246, 165, 49, 0) 40%), var(--bg-3); }
.model-col h3 { font-size: 20px; margin-bottom: 6px; }
.model-col > p { color: var(--text-2); font-size: 15px; }
.model-list { list-style: none; margin: 18px 0 0; padding: 0; }
.model-list li { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 14px 0; border-top: 1px solid var(--line); }
.model-list b { font-size: 15.5px; }
.model-list .vendor { font-size: 12.5px; color: var(--text-3); font-family: var(--mono); text-align: right; }
.model-list span.d { grid-column: 1 / -1; color: var(--text-2); font-size: 14px; }

/* pricing */
.price-modes { margin-bottom: 40px; }
.price-mode { display: flex; flex-direction: column; }
.price-mode .tier { font-family: var(--mono); font-size: 12px; color: var(--text-3); letter-spacing: .08em; text-transform: uppercase; }
.price-mode h3 { font-size: 21px; margin: 6px 0 4px; }
.price-mode .how { color: var(--amber-2); font-weight: 600; font-size: 15px; margin-bottom: 12px; }
.price-mode ul { flex: 1; }
.price-mode.featured { border-color: rgba(246, 165, 49, .45); box-shadow: 0 0 0 1px rgba(246, 165, 49, .15) inset; }
.price-mode .badge { position: absolute; top: 18px; right: 18px; font-size: 12px; background: var(--amber); color: #1a1205; border-radius: 999px; padding: 1px 10px; font-weight: 600; }

.table-wrap { border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; background: var(--bg-3); -webkit-overflow-scrolling: touch; }
table.prices { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 720px; }
.prices th, .prices td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.prices th { font-size: 12.5px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .06em; background: rgba(255, 255, 255, .02); }
.prices tr:last-child td { border-bottom: 0; }
.prices tr.grp td { background: rgba(255, 255, 255, .025); color: var(--text-2); font-size: 13px; font-weight: 600; letter-spacing: .04em; }
.prices td.num { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
.prices th.num { text-align: right; }
.prices td.off { color: var(--text-3); text-decoration: line-through; text-decoration-color: rgba(255, 255, 255, .25); }
.prices td.ours { color: var(--amber-2); font-weight: 700; }
.prices td.save { color: var(--good); }
.prices .m { font-weight: 600; }
.prices .v { color: var(--text-3); font-size: 12.5px; display: block; }
.prices .own-tag { font-size: 11px; color: #1a1205; background: var(--amber); border-radius: 4px; padding: 0 5px; margin-left: 6px; vertical-align: 1px; font-weight: 700; }
.fine { color: var(--text-3); font-size: 13px; margin-top: 14px; }

/* tuning */
.tune-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 18px; }
.bench { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: var(--bg-3); }
.bench h3 { font-size: 18px; margin-bottom: 6px; }
.bench > p { color: var(--text-2); font-size: 14.5px; }
.bars { margin-top: 18px; display: grid; gap: 14px; }
.bar-row { display: grid; grid-template-columns: 128px 1fr 64px; align-items: center; gap: 12px; font-size: 13.5px; color: var(--text-2); }
.bar { height: 12px; border-radius: 6px; background: rgba(255, 255, 255, .05); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 6px; background: linear-gradient(90deg, #39405a, #555e80); }
.bar i.hl { background: linear-gradient(90deg, var(--amber), var(--amber-2)); }
.bar-row .val { font-family: var(--mono); text-align: right; color: var(--text); }
.stack { display: grid; gap: 18px; }

/* deploy */
.deploy .card .where { font-family: var(--mono); font-size: 12px; color: var(--cyan); margin-bottom: 8px; display: block; }
.arch { margin-top: 26px; border: 1px dashed var(--line-2); border-radius: var(--radius); padding: 22px 24px; color: var(--text-2); font-size: 14.5px; display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; }
.arch b { color: var(--text); font-weight: 600; }

/* steps */
.steps { counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { position: relative; padding: 24px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-3); }
.step::before { counter-increment: s; content: "0" counter(s); font-family: var(--mono); font-size: 13px; color: var(--amber); display: block; margin-bottom: 10px; }
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { font-size: 14.5px; color: var(--text-2); margin: 0; }

/* faq */
.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; 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: "+"; color: var(--text-3); font-weight: 400; font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--text-2); font-size: 15px; margin: 10px 0 0; }

/* contact */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.contact-side h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 14px; }
.contact-side p { color: var(--text-2); }
.contact-points { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 12px; }
.contact-points li { display: flex; gap: 10px; color: var(--text-2); font-size: 15px; }
.contact-points li::before { content: "✓"; color: var(--good); font-weight: 700; }
.mail { display: inline-flex; gap: 10px; align-items: center; font-family: var(--mono); font-size: 15px; color: var(--amber-2); border-bottom: 1px dashed rgba(246, 165, 49, .5); }

form.lead { background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 18px; padding: 28px; display: grid; gap: 16px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label.f { display: grid; gap: 6px; font-size: 14px; color: var(--text-2); }
label.f .req { color: var(--amber); }
input, select, textarea {
  width: 100%; font: inherit; font-size: 15px; color: var(--text);
  background: #0c0f16; border: 1px solid var(--line-2); border-radius: 10px; padding: 10px 12px;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px rgba(246, 165, 49, .15); }
textarea { min-height: 110px; resize: vertical; }
fieldset { border: 0; margin: 0; padding: 0; }
fieldset legend { font-size: 14px; color: var(--text-2); margin-bottom: 8px; padding: 0; }
.checks { display: flex; flex-wrap: wrap; gap: 8px; }
.checks label { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line-2); border-radius: 999px; padding: 6px 14px; font-size: 14px; cursor: pointer; color: var(--text-2); user-select: none; }
.checks input { width: auto; margin: 0; accent-color: var(--amber); }
.checks label:has(input:checked) { border-color: var(--amber); color: var(--text); background: rgba(246, 165, 49, .08); }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.form-status { font-size: 14px; color: var(--text-2); min-height: 1.4em; }
.form-status.ok { color: var(--good); }
.form-status.err { color: #ff8a7a; }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 48px; color: var(--text-3); font-size: 14px; }
.foot { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: center; }
.foot nav { display: flex; gap: 20px; flex-wrap: wrap; }
.foot a:hover { color: var(--text); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-links { gap: 16px; font-size: 14px; }
}
@media (max-width: 960px) {
  :root { --gutter: 20px; }
  .hero { padding: 56px 0 56px; }
  .hero-grid, .contact-grid, .tune-grid, .models { grid-template-columns: 1fr; }
  .hero-grid { gap: 40px; }
  .g3, .features { grid-template-columns: 1fr 1fr; }
  .g4, .steps { grid-template-columns: 1fr 1fr; }
  .strip-grid { grid-template-columns: 1fr 1fr; }
  .strip-item:nth-child(3) { border-left: 0; padding-left: 0; }
  .strip-item:nth-child(n+3) { border-top: 1px solid var(--line); }
  .faq { grid-template-columns: 1fr; }
  .menu-btn { display: inline-block; }
  .nav { gap: 14px; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0; margin: 0;
    flex-direction: column; gap: 0; padding: 8px var(--gutter) 16px;
    background: rgba(10, 12, 17, .97); border-bottom: 1px solid var(--line);
  }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-open .nav-links { display: flex; }
  .nav-cta { margin-left: auto; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .section { padding: 68px 0; }
  .g3, .g2, .g4, .features, .steps, .row2 { grid-template-columns: 1fr; }
  .nav-cta .btn { display: none; }
  .logo small { display: none; }
  .card, .model-col, .bench { padding: 22px; }
  form.lead { padding: 20px; }
  .bar-row { grid-template-columns: 96px 1fr 52px; gap: 8px; font-size: 12.5px; }
  .arch { grid-template-columns: 1fr; }
  .strip-item { padding: 18px 14px 18px 0; }
  .strip-item:nth-child(2n) { border-left: 1px solid var(--line); padding-left: 14px; }
  .strip-item b { font-size: 17px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .canvas-svg * { animation: none !important; }
}
input, select { height: 46px; }
select { padding: 0 12px; }
::selection { background: rgba(246, 165, 49, .35); color: #fff; }
.hero h1 em::selection { -webkit-text-fill-color: #fff; color: #fff; }