/* ============================================================
   style.css — Krutton.ru
   ============================================================ */

:root {
    --bg-body: #f5f0eb;
    --bg-gradient-start: #faf6f0;
    --bg-gradient-end: #e8e0d8;
    --text-primary: #1a151e;
    --text-secondary: rgba(26, 21, 30, 0.6);
    --text-muted: rgba(26, 21, 30, 0.35);
    --gold: #b8862c;
    --gold-light: #d4a854;
    --gold-gradient-start: #c49a3c;
    --gold-gradient-end: #8b6914;
    --border-color: rgba(26, 21, 30, 0.08);
    --card-bg: rgba(255, 255, 255, 0.6);
    --glow: rgba(184, 134, 44, 0.15);
    --btn-bg: rgba(184, 134, 44, 0.08);
    --btn-border: rgba(184, 134, 44, 0.25);
    --btn-hover-bg: rgba(184, 134, 44, 0.15);
    --footer-border: rgba(26, 21, 30, 0.06);
    --square-size: 220px;
    --mini-square-size: 48px;
    --transition-speed: 0.4s;
    --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
    --bg-body: #0b0a0c;
    --bg-gradient-start: #1a151e;
    --bg-gradient-end: #0b0a0c;
    --text-primary: #f5e6c8;
    --text-secondary: rgba(245, 230, 200, 0.6);
    --text-muted: rgba(245, 230, 200, 0.3);
    --gold: #d4a854;
    --gold-light: #f5c542;
    --gold-gradient-start: #f5e6c8;
    --gold-gradient-end: #d4a854;
    --border-color: rgba(255, 255, 255, 0.06);
    --card-bg: rgba(255, 255, 255, 0.04);
    --glow: rgba(212, 168, 84, 0.15);
    --btn-bg: rgba(212, 168, 84, 0.06);
    --btn-border: rgba(212, 168, 84, 0.25);
    --btn-hover-bg: rgba(212, 168, 84, 0.12);
    --footer-border: rgba(255, 255, 255, 0.04);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-family);
    background: var(--bg-body);
    background-image: radial-gradient(circle at 50% 50%, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 90%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
    transition: background var(--transition-speed) ease, color var(--transition-speed) ease;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* ============================================================
   HEADER
   ============================================================ */

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 40px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    background: var(--bg-body);
    backdrop-filter: blur(8px);
    z-index: 10;
    transition: background var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-link { text-decoration: none; }

.header-kruton-mini {
    width: var(--mini-square-size);
    height: var(--mini-square-size);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.header-kruton-mini:hover {
    transform: scale(1.05);
}

.header-kruton-mini svg {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 12px;
}

.header-tagline {
    font-size: 12px;
    font-weight: 300;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-muted);
}
.header-tagline a {
    color: var(--gold);
    text-decoration: none;
}
.header-tagline a:hover {
    text-decoration: underline;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-lang {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 2px;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}
.header-lang:hover { color: var(--text-secondary); }
.header-lang .active { color: var(--gold); }
.header-lang span { margin: 0 4px; }

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 60px;
    padding: 4px 12px 4px 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    background: var(--card-bg);
    font-family: inherit;
    font-size: 14px;
}
.theme-toggle:hover { border-color: var(--gold); background: var(--btn-hover-bg); }

.toggle-track {
    width: 36px;
    height: 20px;
    border-radius: 60px;
    background: var(--text-muted);
    position: relative;
    flex-shrink: 0;
    transition: background 0.3s ease;
}
.toggle-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-body);
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s ease;
}
[data-theme="dark"] .toggle-track { background: var(--gold); }
[data-theme="dark"] .toggle-thumb { transform: translateX(16px); background: var(--bg-body); }

.toggle-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    min-width: 28px;
}

/* ============================================================
   PAGES
   ============================================================ */

.page {
    display: none;
    flex: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 30px 20px 40px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.page.active { display: flex; }

/* ============================================================
   ГЛАВНАЯ
   ============================================================ */

.hero-sub {
    font-size: 18px;
    font-weight: 300;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.hero-title {
    font-size: 120px;
    font-weight: 900;
    letter-spacing: 10px;
    line-height: 1;
    background: linear-gradient(180deg, var(--gold-gradient-start) 0%, var(--gold-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.accent-line, .accent-line-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 16px;
    width: 200px;
}
.accent-line .line-left, .accent-line .line-right,
.accent-line-bottom .line-left, .accent-line-bottom .line-right {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold));
}
.accent-line .line-right, .accent-line-bottom .line-right {
    background: linear-gradient(90deg, var(--gold), transparent);
}
.accent-line .diamond, .accent-line-bottom .diamond {
    width: 10px;
    height: 10px;
    background: var(--gold);
    transform: rotate(45deg);
    flex-shrink: 0;
}

.tech-line {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 30px;
}
.tech-line .tech-1 {
    font-size: 20px;
    font-weight: 300;
    letter-spacing: 6px;
    color: var(--text-secondary);
}
.tech-line .tech-2 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 6px;
    color: var(--text-secondary);
}

/* ============================================================
   КВАДРАТ
   ============================================================ */

.kruton-square-wrap {
    position: relative;
    width: var(--square-size);
    height: var(--square-size);
    margin-bottom: 32px;
}

.kruton-square-wrap::before {
    content: '';
    position: absolute;
    inset: -40px;
    border-radius: 20px;
    background: radial-gradient(circle, var(--glow) 0%, transparent 70%);
    animation: pulseGlow 3s ease-in-out infinite;
    pointer-events: none;
    will-change: transform, opacity;
    transform: translateZ(0);
}

@keyframes pulseGlow {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.15); opacity: 1; }
}

.kruton-square {
    width: 100%;
    height: 100%;
    border-radius: 24px;
    position: relative;
    z-index: 2;
    overflow: hidden;
    box-shadow: 
        0 8px 40px rgba(184, 134, 44, 0.25),
        0 0 60px rgba(184, 134, 44, 0.08),
        inset 0 1px 0 rgba(255,255,255,0.1);
    cursor: pointer;
    transition: transform 0.4s ease, box-shadow 0.4s ease, filter 0.4s ease;
    will-change: transform, opacity;
    transform: translateZ(0);
}
.kruton-square:hover {
    transform: scale(1.03);
    box-shadow: 
        0 12px 60px rgba(184, 134, 44, 0.35),
        0 0 80px rgba(184, 134, 44, 0.12);
}
.kruton-square:active { transform: scale(0.95); }

.pattern-overlay {
    position: absolute;
    inset: 0;
    border-radius: 24px;
    z-index: 3;
    pointer-events: none;
}

.inner-dots {
    position: absolute;
    inset: 20px;
    border-radius: 16px;
    z-index: 4;
    pointer-events: none;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.2) 2px, transparent 2px),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.15) 3px, transparent 3px),
        radial-gradient(circle at 50% 80%, rgba(255,255,255,0.1) 2px, transparent 2px),
        radial-gradient(circle at 10% 70%, rgba(255,255,255,0.08) 4px, transparent 4px),
        radial-gradient(circle at 90% 20%, rgba(255,255,255,0.12) 3px, transparent 3px);
}

.center-symbol {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 60px;
    color: rgba(255,255,255,0.12);
    z-index: 5;
    pointer-events: none;
    animation: spin 20s linear infinite;
}
@keyframes spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.dna-label {
    position: absolute;
    bottom: 12px;
    right: 16px;
    font-size: 10px;
    font-family: 'Courier New', monospace;
    color: rgba(255,255,255,0.15);
    z-index: 6;
    pointer-events: none;
}

.particle-container {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
    overflow: visible;
}
.particle-piece {
    position: absolute;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    will-change: transform, opacity;
    transform: translateZ(0);
}

.kruton-square.broken {
    animation: breakApart 0.8s ease forwards;
}
@keyframes breakApart {
    0% { transform: scale(1); opacity: 1; filter: blur(0); }
    30% { transform: scale(1.1) rotate(5deg); opacity: 0.8; filter: blur(2px); }
    60% { transform: scale(0.8) rotate(-8deg); opacity: 0.4; filter: blur(4px); }
    100% { transform: scale(0.3) rotate(15deg); opacity: 0; filter: blur(8px); }
}

.kruton-square.restoring {
    animation: restoreBack 1.2s ease forwards;
}
@keyframes restoreBack {
    0% { transform: scale(0.3) rotate(15deg); opacity: 0; filter: blur(8px); }
    50% { transform: scale(0.7) rotate(-5deg); opacity: 0.3; filter: blur(3px); }
    75% { transform: scale(1.05) rotate(2deg); opacity: 0.7; filter: blur(1px); }
    100% { transform: scale(1) rotate(0deg); opacity: 1; filter: blur(0); }
}

/* ============================================================
   КАРТОЧКА ВЛАДЕЛЬЦА — НОВАЯ
   ============================================================ */

.owner-card-wrap {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 0 16px;
    margin: 24px 0 28px 0;
}

.owner-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 20px 24px;
    max-width: 420px;
    width: 100%;
    backdrop-filter: blur(16px);
    transition: box-shadow 0.4s ease, border-color 0.4s ease, transform 0.4s ease;
}

.owner-card:hover {
    border-color: var(--gold);
    box-shadow: 0 12px 60px rgba(184, 134, 44, 0.15);
    transform: translateY(-4px);
}

.owner-card-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: inherit;
    gap: 16px;
}

/* ===== ЛОГОТИП ТЕМП РЕШЕНИЙ ===== */
.owner-card-logo {
    width: 100%;
    max-width: 240px;
    flex-shrink: 0;
}

.owner-card-logo svg {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    box-shadow: 0 4px 30px rgba(13, 148, 136, 0.2);
}

.owner-card-link:hover .owner-card-logo svg {
    transform: scale(1.02);
    box-shadow: 0 8px 50px rgba(13, 148, 136, 0.3);
}

/* ===== ИНФОРМАЦИЯ ===== */
.owner-card-info {
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.owner-card-badge {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-muted);
    background: var(--border-color);
    padding: 3px 16px;
    border-radius: 30px;
    display: inline-block;
}

.owner-card-brand {
    font-size: 36px;
    font-weight: 900;
    letter-spacing: 6px;
    background: linear-gradient(135deg, var(--gold-gradient-start), var(--gold-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.owner-card-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px 16px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.owner-card-label {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 2px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.owner-card-date {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--gold);
    background: rgba(184, 134, 44, 0.08);
    padding: 4px 18px;
    border-radius: 30px;
    border: 1px solid rgba(184, 134, 44, 0.1);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

/* ===== ТЁМНАЯ ТЕМА ===== */
[data-theme="dark"] .owner-card {
    border-color: rgba(212, 168, 84, 0.15);
}

[data-theme="dark"] .owner-card:hover {
    border-color: var(--gold);
    box-shadow: 0 12px 60px rgba(212, 168, 84, 0.12);
}

[data-theme="dark"] .owner-card-date {
    background: rgba(212, 168, 84, 0.08);
    border-color: rgba(212, 168, 84, 0.15);
}

[data-theme="dark"] .owner-card-badge {
    background: rgba(255, 255, 255, 0.06);
}

/* ===== АДАПТИВ ===== */
@media (max-width: 480px) {
    .owner-card-wrap {
        padding: 0 12px;
        margin: 16px 0 20px 0;
    }
    
    .owner-card {
        padding: 16px 18px;
        border-radius: 20px;
        max-width: 100%;
    }
    
    .owner-card-link {
        gap: 14px;
    }
    
    .owner-card-logo {
        max-width: 180px;
    }
    
    .owner-card-brand {
        font-size: 28px;
        letter-spacing: 4px;
    }
    
    .owner-card-badge {
        font-size: 9px;
        letter-spacing: 2px;
        padding: 2px 12px;
    }
    
    .owner-card-bottom {
        gap: 4px 10px;
    }
    
    .owner-card-label {
        font-size: 11px;
        letter-spacing: 1px;
    }
    
    .owner-card-date {
        font-size: 18px;
        padding: 3px 14px;
        letter-spacing: 1px;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    .owner-card {
        padding: 18px 20px;
        max-width: 380px;
    }
    
    .owner-card-logo {
        max-width: 200px;
    }
    
    .owner-card-brand {
        font-size: 32px;
        letter-spacing: 5px;
    }
    
    .owner-card-date {
        font-size: 20px;
    }
}

@media (min-width: 769px) {
    .owner-card {
        padding: 24px 28px;
        max-width: 440px;
    }
    
    .owner-card-logo {
        max-width: 260px;
    }
    
    .owner-card-brand {
        font-size: 40px;
        letter-spacing: 7px;
    }
    
    .owner-card-date {
        font-size: 24px;
        padding: 4px 20px;
    }
}

/* ============================================================
   ВОПРОС "ХОЧЕШЬ ЕГО?"
   ============================================================ */

.question-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}
.question-bottom .q-bottom-1 {
    font-size: 20px;
    font-weight: 300;
    letter-spacing: 6px;
    color: var(--text-secondary);
}
.question-bottom .q-bottom-2 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 6px;
    color: var(--text-secondary);
}

/* ============================================================
   КНОПКА "ДА"
   ============================================================ */

.btn-yes {
    background: var(--btn-bg);
    border: 1px solid var(--btn-border);
    color: var(--text-primary);
    padding: 14px 52px;
    border-radius: 60px;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 4px;
    cursor: pointer;
    font-family: inherit;
    backdrop-filter: blur(4px);
    text-transform: lowercase;
    margin-bottom: 20px;
    min-width: 220px;
    animation: pulseBtn 3s ease-in-out infinite;
}
@keyframes pulseBtn {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 168, 84, 0); }
    50% { box-shadow: 0 0 0 8px rgba(212, 168, 84, 0.08); }
}
.btn-yes:hover {
    background: var(--btn-hover-bg);
    border-color: var(--gold);
    box-shadow: 0 0 40px var(--glow);
    transform: scale(1.02);
    animation-play-state: paused;
}
.btn-yes:active { transform: scale(0.94); }

/* ============================================================
   СТРАНИЦЫ: ИСТОРИЯ, ВЛАДЕЛЕЦ, КОД, ПРАВИЛА, СТАРТАП
   ============================================================ */

.page-title {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 4px;
    background: linear-gradient(180deg, var(--gold-gradient-start) 0%, var(--gold-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 30px;
}

.page-subtitle {
    font-size: 18px;
    font-weight: 300;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* ============================================================
   ИСТОРИЯ
   ============================================================ */

.history-table {
    width: 100%;
    max-width: 700px;
    border-collapse: collapse;
    margin: 0 auto;
    text-align: left;
}
.history-table th {
    padding: 12px 16px;
    border-bottom: 2px solid var(--gold);
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 13px;
}
.history-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 15px;
}
.history-table .highlight td { color: var(--gold); font-weight: 600; }

/* ============================================================
   ВЛАДЕЛЕЦ (страница)
   ============================================================ */

.owner-card-page {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 100%;
    backdrop-filter: blur(8px);
}
.owner-card-page .field {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}
.owner-card-page .field:last-child { border-bottom: none; }
.owner-card-page .label { color: var(--text-muted); font-weight: 300; letter-spacing: 1px; }
.owner-card-page .value { color: var(--text-primary); font-weight: 500; }
.owner-card-page .value a { color: var(--gold); text-decoration: none; }

.owner-logo-big {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold));
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 44px;
    font-weight: 900;
    color: var(--bg-body);
    margin: 0 auto 20px;
    box-shadow: 0 8px 30px rgba(184, 134, 44, 0.2);
}

/* ============================================================
   КОД
   ============================================================ */

.code-block {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    max-width: 700px;
    width: 100%;
    text-align: left;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-primary);
    backdrop-filter: blur(8px);
}
.code-block .comment { color: var(--text-muted); font-style: italic; }
.code-block .keyword { color: var(--gold); font-weight: 600; }
.code-block .string { color: var(--gold-light); }

.btn-download {
    margin-top: 20px;
    background: var(--gold);
    color: var(--bg-body);
    border: none;
    padding: 12px 40px;
    border-radius: 60px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    font-family: inherit;
}
.btn-download:hover { transform: scale(1.05); box-shadow: 0 4px 30px rgba(184, 134, 44, 0.3); }

/* ============================================================
   ПРАВИЛА
   ============================================================ */

.rules-list {
    max-width: 600px;
    width: 100%;
    text-align: left;
}
.rules-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    list-style: none;
    color: var(--text-primary);
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.rules-list li::before { content: '◆'; color: var(--gold); font-size: 12px; }

/* ============================================================
   СТАРТАП
   ============================================================ */

.startup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    max-width: 700px;
    width: 100%;
    text-align: left;
}
.startup-block {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    backdrop-filter: blur(8px);
}
.startup-block h3 {
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 12px;
    font-size: 16px;
}
.startup-block p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}
.startup-block .contact {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    color: var(--text-primary);
}
.startup-block .contact a { color: var(--gold); text-decoration: none; }
.startup-block .contact svg { color: var(--gold); flex-shrink: 0; }

/* ============================================================
   FOOTER
   ============================================================ */

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px 20px;
    border-top: 1px solid var(--footer-border);
    flex-shrink: 0;
    margin-top: auto;
    position: sticky;
    bottom: 0;
    background: var(--bg-body);
    backdrop-filter: blur(8px);
    z-index: 10;
    flex-wrap: wrap;
    gap: 8px 20px;
}
.footer-item {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 2px;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
}
.footer-item:hover { color: var(--gold); border-bottom-color: var(--gold); }
.footer-counter {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 2px;
    color: var(--text-muted);
}

/* ============================================================
   ФОКУС ДЛЯ КЛАВИАТУРЫ
   ============================================================ */

a:focus-visible,
button:focus-visible,
.header-lang:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

/* ============================================================
   АППАРАТНОЕ УСКОРЕНИЕ
   ============================================================ */

.kruton-square-wrap::before,
.kruton-square,
.particle-piece {
    will-change: transform, opacity;
    transform: translateZ(0);
}

/* ============================================================
   СКРОЛЛБАР
   ============================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-body);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: 4px;
    transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gold-light);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--gold) var(--bg-body);
}

[data-theme="dark"] .code-block::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .code-block::-webkit-scrollbar-thumb {
    background: var(--gold);
}

[data-theme="dark"] .code-block {
    scrollbar-color: var(--gold) rgba(255, 255, 255, 0.05);
}

.code-block {
    overflow-y: auto;
    max-height: 500px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: #1a151e;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #d4a854;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #f5c542;
}

/* ============================================================
   АДАПТИВ
   ============================================================ */

@media (max-width: 768px) {
    header { padding: 12px 20px; flex-wrap: wrap; gap: 8px; justify-content: center; }
    .header-tagline { font-size: 10px; letter-spacing: 2px; }
    .header-lang { font-size: 10px; letter-spacing: 1.5px; }
    .theme-toggle { font-size: 12px; padding: 3px 10px 3px 3px; }
    .toggle-track { width: 30px; height: 18px; }
    .toggle-thumb { width: 14px; height: 14px; }
    [data-theme="dark"] .toggle-thumb { transform: translateX(12px); }
    .hero-title { font-size: 72px; letter-spacing: 6px; }
    .hero-sub { font-size: 15px; letter-spacing: 6px; }
    .page-title { font-size: 36px; }
    :root { --square-size: 180px; --mini-square-size: 40px; }
    .tech-line .tech-1 { font-size: 17px; letter-spacing: 5px; }
    .tech-line .tech-2 { font-size: 20px; letter-spacing: 5px; }
    .question-bottom .q-bottom-1 { font-size: 17px; letter-spacing: 5px; }
    .question-bottom .q-bottom-2 { font-size: 20px; letter-spacing: 5px; }
    .btn-yes { padding: 12px 40px; font-size: 17px; letter-spacing: 3px; min-width: 180px; }
    .accent-line, .accent-line-bottom { width: 160px; }
    .startup-grid { grid-template-columns: 1fr; }
    footer { padding: 14px 20px 18px; justify-content: center; }
    .footer-item, .footer-counter { font-size: 11px; letter-spacing: 1.5px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
    :root { --square-size: 200px; }
    .hero-title { font-size: 96px; }
}

@media (max-width: 480px) {
    header { padding: 10px 12px; flex-direction: column; gap: 6px; }
    .header-tagline { font-size: 8px; letter-spacing: 1.5px; }
    .header-controls { gap: 12px; }
    .header-lang { font-size: 9px; letter-spacing: 1px; }
    .theme-toggle { font-size: 10px; padding: 2px 8px 2px 2px; border-radius: 40px; }
    .toggle-track { width: 26px; height: 16px; }
    .toggle-thumb { width: 12px; height: 12px; top: 2px; left: 2px; }
    [data-theme="dark"] .toggle-thumb { transform: translateX(10px); }
    .toggle-label { font-size: 9px; min-width: 20px; }
    .hero-title { font-size: 48px; letter-spacing: 4px; }
    .hero-sub { font-size: 12px; letter-spacing: 4px; }
    .page-title { font-size: 28px; }
    :root { --square-size: 140px; --mini-square-size: 32px; }
    .kruton-square-wrap::before { inset: -20px; }
    .tech-line .tech-1 { font-size: 14px; letter-spacing: 3px; }
    .tech-line .tech-2 { font-size: 17px; letter-spacing: 3px; }
    .question-bottom .q-bottom-1 { font-size: 14px; letter-spacing: 3px; }
    .question-bottom .q-bottom-2 { font-size: 17px; letter-spacing: 3px; }
    .btn-yes { padding: 10px 28px; font-size: 14px; letter-spacing: 2px; min-width: 150px; margin-bottom: 14px; }
    .accent-line, .accent-line-bottom { width: 120px; margin-bottom: 12px; }
    .owner-card-page { padding: 20px; }
    .code-block { font-size: 12px; padding: 16px; }
    .rules-list li { font-size: 14px; }
    .startup-block { padding: 16px; }
    footer { padding: 12px 12px 16px; flex-direction: column; gap: 4px; align-items: center; }
    .footer-item, .footer-counter { font-size: 10px; letter-spacing: 1px; text-align: center; width: 100%; }
}

/* ============================================================
   ПЕЧАТЬ
   ============================================================ */

@media print {
    header, footer, .btn-yes, .theme-toggle, .header-lang {
        display: none !important;
    }
    body { background: white !important; color: black !important; }
    .page { padding: 20px !important; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    .page { animation: none !important; }
    .btn-yes { animation: none !important; }
    .kruton-square-wrap::before { animation: none !important; }
    .center-symbol { animation: none !important; }
    .kruton-square.broken, .kruton-square.restoring { animation: none !important; }
}