:root,
[data-theme="light"] {
  --color-bg: #f8f9fc;
  --color-bg-mesh: radial-gradient(ellipse 70% 45% at 15% -5%, rgba(94, 92, 230, 0.07), transparent),
    radial-gradient(ellipse 50% 35% at 92% 8%, rgba(124, 110, 216, 0.05), transparent);
  --color-surface: rgba(255, 255, 255, 0.92);
  --color-surface-solid: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-border: rgba(15, 23, 42, 0.08);
  --color-border-strong: rgba(15, 23, 42, 0.14);
  --color-text: #111827;
  --color-text-secondary: #4b5563;
  --color-text-muted: #9ca3af;
  --color-accent-1: #5e5ce6;
  --color-accent-2: #6d6ae8;
  --gradient-accent: linear-gradient(160deg, #5e5ce6 0%, #7c6ee4 100%);
  --gradient-accent-hover: linear-gradient(160deg, #5452d4 0%, #6e62d8 100%);
  --color-accent-muted: rgba(94, 92, 230, 0.08);
  --color-accent-subtle: rgba(94, 92, 230, 0.04);
  --color-success: #059669;
  --color-success-bg: rgba(5, 150, 105, 0.1);
  --color-warning: #d97706;
  --color-warning-bg: rgba(217, 119, 6, 0.1);
  --color-error: #dc2626;
  --color-error-bg: rgba(220, 38, 38, 0.08);
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.04);
  --shadow-md: 0 4px 20px rgba(17, 24, 39, 0.06);
  --shadow-lg: 0 12px 40px rgba(17, 24, 39, 0.08);
  --shadow-accent: 0 4px 14px rgba(94, 92, 230, 0.22);
  --screenshot-frame-bg: #16161f;
  --screenshot-glow: 0 24px 80px rgba(94, 92, 230, 0.18), 0 8px 32px rgba(17, 24, 39, 0.12);
}
[data-theme="dark"] {
  --color-bg: #0c0c10;
  --color-bg-mesh: radial-gradient(ellipse 60% 40% at 12% 0%, rgba(94, 92, 230, 0.12), transparent),
    radial-gradient(ellipse 45% 35% at 88% 15%, rgba(124, 110, 216, 0.06), transparent);
  --color-surface: rgba(22, 22, 28, 0.88);
  --color-surface-solid: #16161c;
  --color-surface-elevated: #1e1e26;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.12);
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-accent-muted: rgba(124, 120, 232, 0.14);
  --color-accent-subtle: rgba(124, 120, 232, 0.06);
  --color-success-bg: rgba(5, 150, 105, 0.12);
  --color-warning-bg: rgba(217, 119, 6, 0.15);
  --color-error-bg: rgba(220, 38, 38, 0.12);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-accent: 0 4px 20px rgba(94, 92, 230, 0.2);
  --screenshot-frame-bg: #121218;
  --screenshot-glow: 0 24px 72px rgba(94, 92, 230, 0.22), 0 8px 28px rgba(0, 0, 0, 0.4);
}
:root {
  --font-sans: "Plus Jakarta Sans", "Manrope", system-ui, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --focus-ring: 0 0 0 3px var(--color-accent-muted);
}
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 400; font-display: swap; src: url("../fonts/jakarta-cyrillic-400.woff2") format("woff2"); unicode-range: U+0400-045F, U+0490-04FF; }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 400; font-display: swap; src: url("../fonts/jakarta-latin-400.woff2") format("woff2"); unicode-range: U+0000-00FF; }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 600; font-display: swap; src: url("../fonts/jakarta-cyrillic-600.woff2") format("woff2"); unicode-range: U+0400-045F, U+0490-04FF; }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 600; font-display: swap; src: url("../fonts/jakarta-latin-600.woff2") format("woff2"); unicode-range: U+0000-00FF; }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 700; font-display: swap; src: url("../fonts/jakarta-cyrillic-700.woff2") format("woff2"); unicode-range: U+0400-045F, U+0490-04FF; }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 700; font-display: swap; src: url("../fonts/jakarta-latin-700.woff2") format("woff2"); unicode-range: U+0000-00FF; }
@font-face { font-family: "Manrope"; font-weight: 400; font-display: swap; src: url("../fonts/manrope-cyrillic-400.woff2") format("woff2"); unicode-range: U+0400-04FF; }
@font-face { font-family: "Manrope"; font-weight: 400; font-display: swap; src: url("../fonts/manrope-latin-400.woff2") format("woff2"); unicode-range: U+0000-00FF; }
@font-face { font-family: "Manrope"; font-weight: 600; font-display: swap; src: url("../fonts/manrope-cyrillic-600.woff2") format("woff2"); unicode-range: U+0400-04FF; }
@font-face { font-family: "Manrope"; font-weight: 600; font-display: swap; src: url("../fonts/manrope-latin-600.woff2") format("woff2"); unicode-range: U+0000-00FF; }
@font-face { font-family: "Instrument Serif"; font-weight: 400; font-style: normal; font-display: swap; src: url("../fonts/instrument-latin-400.woff2") format("woff2"); }
@font-face { font-family: "Instrument Serif"; font-weight: 400; font-style: italic; font-display: swap; src: url("../fonts/instrument-latin-400i.woff2") format("woff2"); }
* { box-sizing: border-box; }
html { font-size: 16px; }
html[data-theme="dark"] { color-scheme: dark; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  background-image: var(--color-bg-mesh);
  background-attachment: fixed;
  line-height: 1.55;
}
a { color: var(--color-accent-1); text-decoration: none; }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header, .site-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; }
.site-header nav, .auth-links { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.site-header nav a, .brand { color: var(--color-text); font-weight: 600; }
.brand { letter-spacing: -0.02em; }
h1, .display {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.display em { font-style: italic; color: var(--color-accent-1); }
h2 { font-size: 1.8rem; letter-spacing: -0.02em; margin: 0 0 12px; }
.lead { color: var(--color-text-secondary); font-size: 1.125rem; max-width: 46ch; }
.hero { padding: 48px 0 24px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.btn, button.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 0.875rem/1 var(--font-sans); padding: 0.7rem 1.2rem; border-radius: var(--radius-md);
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.btn-primary,
a.btn-primary,
.site-header nav a.btn-primary { background: var(--gradient-accent); color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:hover,
a.btn-primary:hover,
.site-header nav a.btn-primary:hover { background: var(--gradient-accent-hover); color: #fff; }
.btn-secondary { background: var(--color-surface-solid); color: var(--color-text); border-color: var(--color-border-strong); }
.btn-ghost { background: transparent; color: var(--color-accent-1); }
.btn-danger { background: var(--color-error); color: white; }
.section { padding: 56px 0; }
.grid-3, .grid-2 { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card, .panel {
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.muted { color: var(--color-text-muted); font-size: 0.875rem; }
.kicker { color: var(--color-accent-1); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.shot { background: var(--color-surface-solid); color: var(--color-text); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; min-height: 280px; position: relative; }
[data-theme="dark"] .shot { background: var(--screenshot-frame-bg); color: #e8e8f0; border-color: transparent; box-shadow: var(--screenshot-glow); }
.shot-bar { display: flex; gap: 6px; padding: 12px 14px; background: rgba(15, 23, 42, 0.04); }
[data-theme="dark"] .shot-bar { background: rgba(255,255,255,0.04); }
.shot-body { padding: 20px; }
.shot-stage { display: flex; justify-content: flex-end; padding: 24px; }
.shot-window { width: min(320px, 100%); background: var(--color-surface-solid); color: var(--color-text); border: 1px solid var(--color-border); border-radius: 18px; overflow: hidden; }
.shot-title { background: #5e5ce6; color: #fff; border-radius: 14px; padding: 12px 14px; margin-bottom: 12px; }
.shot-window .shot-title { border-radius: 0; margin: 0; }
.shot-bot { border-radius: 12px; padding: 10px 12px; margin-bottom: 8px; background: var(--color-accent-subtle); }
.shot-user { margin-left: auto; max-width: 80%; background: #5e5ce6; color: #fff; border-radius: 12px; padding: 10px 12px; }
.shot-copy { padding: 14px; font-size: 14px; }
.shot-note { padding: 10px 14px; font-size: 12px; color: var(--color-text-muted); }
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; display: block; background: #ff5f57; }
.shot-bar i:nth-child(2) { background: #febc2e; }
.shot-bar i:nth-child(3) { background: #28c840; }
.faq details { border-bottom: 1px solid var(--color-border); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.site-footer { border-top: 1px solid var(--color-border); margin-top: 24px; color: var(--color-text-secondary); font-size: 0.875rem; }
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: min(440px, 100%); }
label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; font: 1rem var(--font-sans); color: var(--color-text); background: var(--color-surface-solid);
  border: 1px solid var(--color-border-strong); border-radius: var(--radius-md); padding: 0.7rem 0.9rem;
}
textarea { min-height: 120px; }
.field { margin-bottom: 14px; }
.check { display: flex; gap: 8px; align-items: flex-start; font-size: 0.875rem; }
.check input { width: auto; margin-top: 3px; }
.alert { padding: 12px 14px; border-radius: var(--radius-md); margin-bottom: 14px; }
.alert-error { background: var(--color-error-bg); color: var(--color-error); }
.alert-ok { background: var(--color-success-bg); color: var(--color-success); }
.app-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.side { padding: 24px 16px; border-right: 1px solid var(--color-border); background: var(--color-surface-solid); }
.side a { display: block; padding: 8px 10px; border-radius: 8px; color: var(--color-text-secondary); font-weight: 600; }
.side a.active, .side a:hover { background: var(--color-accent-subtle); color: var(--color-text); }
.main { padding: 28px; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
th { font-size: 0.75rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--color-text-secondary); }
.badge { display: inline-flex; padding: 2px 8px; border-radius: 999px; font-size: 0.75rem; font-weight: 700; background: var(--color-accent-muted); }
.badge-ok { background: var(--color-success-bg); color: var(--color-success); }
.badge-warn { background: var(--color-warning-bg); color: var(--color-warning); }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs a { padding: 6px 10px; border-radius: 8px; color: var(--color-text-secondary); font-weight: 600; }
.tabs a.active { background: var(--color-accent-muted); color: var(--color-text); }
.code { font-family: ui-monospace, monospace; background: var(--screenshot-frame-bg); color: #e2e8f0; padding: 14px; border-radius: 10px; overflow-x: auto; }
.preview-stage { position: relative; min-height: 560px; background: var(--color-bg); border: 1px dashed var(--color-border-strong); border-radius: 16px; overflow: hidden; }
@media (max-width: 860px) {
  .hero, .grid-3, .grid-2, .app-shell { grid-template-columns: 1fr; }
  .side { border-right: 0; border-bottom: 1px solid var(--color-border); }
  .site-header { flex-wrap: wrap; }
}