/* ============================================
   Енергопромінь — Design System
   ============================================ */

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

/* ============================================
   Design Tokens
   ============================================ */
:root {
    /* Brand Colors */
    --color-bg: #0c0a18;
    --color-bg-alt: #12101f;
    --color-bg-elev: #1a1730;
    --color-surface: #ffffff;
    --color-surface-alt: #f5f6fc;
    --color-surface-soft: #eef0fb;

    --color-primary: #38bdf8;           /* sky blue */
    --color-primary-dark: #0ea5e9;
    --color-primary-light: #7dd3fc;

    --color-accent: #8b5cf6;            /* violet */
    --color-accent-dark: #7c3aed;
    --color-accent-light: #a78bfa;

    --color-text: #0e0c18;
    --color-text-muted: #4a4866;
    --color-text-soft: #6b6885;
    --color-text-inverse: #ffffff;
    --color-text-inverse-muted: #9b97b8;

    --color-border: #e2e4f0;
    --color-border-dark: #2e2a44;

    --color-success: #059669;
    --color-error: #dc2626;

    /* Typography */
    --font-display: 'Space Grotesk', 'Manrope', system-ui, sans-serif;
    --font-body: 'Manrope', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 28px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(12, 10, 24, 0.06);
    --shadow-md: 0 4px 12px rgba(12, 10, 24, 0.08);
    --shadow-lg: 0 16px 40px rgba(12, 10, 24, 0.12);
    --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.3);

    /* Transitions */
    --t-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow: 520ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Container */
    --container-max: 1240px;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--t-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-24) 0;
    position: relative;
}

.section--tight {
    padding: var(--space-16) 0;
}

.section--dark {
    background-color: var(--color-bg);
    color: var(--color-text-inverse);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--color-text-inverse);
}

.section--alt {
    background-color: var(--color-surface-alt);
}

/* ============================================
   Typography Utilities
   ============================================ */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-primary);
    padding: var(--space-2) var(--space-4);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 999px;
    background-color: rgba(56, 189, 248, 0.06);
}

.eyebrow--inverse {
    color: var(--color-accent);
    border-color: rgba(139, 92, 246, 0.3);
    background-color: rgba(139, 92, 246, 0.08);
}

.eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
}

h1, .h1 {
    font-size: clamp(2.2rem, 5.5vw, 4.2rem);
}

h2, .h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.75rem);
}

h3, .h3 {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.lead {
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    line-height: 1.55;
    color: var(--color-text-muted);
}

.section--dark .lead {
    color: var(--color-text-inverse-muted);
}

.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    cursor: pointer;
    white-space: nowrap;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn--accent {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.btn--accent:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
}

.btn--outline {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}

.btn--outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn--outline-light {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-text-inverse);
}

.btn--outline-light:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn--ghost {
    background: transparent;
    color: var(--color-primary);
    padding-left: 0;
    padding-right: 0;
}

.btn--ghost:hover .btn__arrow {
    transform: translateX(4px);
}

.btn__arrow {
    display: inline-block;
    transition: transform var(--t-base);
}

/* ============================================
   Header
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 300;
    background-color: rgba(12, 10, 24, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background-color var(--t-base);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    height: 76px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.logo__mark {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.logo__mark::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 30%, rgba(139, 92, 246, 0.3) 70%);
}

.logo__mark svg {
    position: relative;
    z-index: 1;
    width: 22px;
    height: 22px;
    color: white;
}

.logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.01em;
    color: var(--color-text-inverse);
    white-space: nowrap;
}

.logo__tagline {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-top: 3px;
    white-space: nowrap;
}

/* Nav wrapper — центральная часть шапки */
.header__nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-6);
    flex: 1;
    min-width: 0;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav__link {
    position: relative;
    padding: var(--space-2) var(--space-3);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-inverse-muted);
    border-radius: var(--radius-sm);
    transition: color var(--t-fast);
    white-space: nowrap;
}

.nav__link:hover {
    color: var(--color-text-inverse);
}

.nav__link.is-active {
    color: var(--color-accent);
}

.nav__link.is-active::after {
    content: '';
    position: absolute;
    left: var(--space-3);
    right: var(--space-3);
    bottom: -4px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
}

/* CTA block (phone + button) */
.header__cta {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    flex-shrink: 0;
}

.header__phone {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text-inverse);
    white-space: nowrap;
}

.header__phone svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.header__cta .btn {
    padding: var(--space-3) var(--space-5);
    font-size: 0.875rem;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    position: relative;
    cursor: pointer;
    z-index: 210;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.nav-toggle span {
    position: absolute;
    left: 10px;
    right: 10px;
    height: 2px;
    background: var(--color-text-inverse);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 28px; }

.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Body scroll lock when menu is open */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

/* Mobile overlay */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
    -webkit-tap-highlight-color: transparent;
}

.nav-overlay.is-visible {
    opacity: 1;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: var(--color-bg);
    color: var(--color-text-inverse);
    padding: var(--space-20) 0;
}

.hero__grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 85%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 85%);
}

.hero__gradient {
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.35;
    pointer-events: none;
}

.hero__gradient--1 {
    background: var(--color-primary);
    top: -300px;
    right: -200px;
    animation: float 14s ease-in-out infinite;
}

.hero__gradient--2 {
    background: var(--color-accent);
    bottom: -400px;
    left: -200px;
    opacity: 0.15;
    animation: float 18s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, -40px) scale(1.05); }
}

.hero__inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.hero__content {
    max-width: 640px;
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1.05;
    color: var(--color-text-inverse);
    margin: var(--space-6) 0;
    letter-spacing: -0.03em;
}

.hero__title-accent {
    position: relative;
    display: inline-block;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero__subtitle {
    font-size: clamp(1.125rem, 1.8vw, 1.375rem);
    color: var(--color-text-inverse-muted);
    max-width: 520px;
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-12);
}

.hero__meta {
    display: flex;
    gap: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__meta-item {
    display: flex;
    flex-direction: column;
}

.hero__meta-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-inverse-muted);
    margin-bottom: var(--space-2);
}

.hero__meta-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--color-accent);
}

/* Hero visual — animated energy card */
.hero__visual {
    position: relative;
    max-width: 480px;
    margin-left: auto;
    width: 100%;
}

.energy-card {
    position: relative;
    width: 100%;
    min-height: 440px;
    background: linear-gradient(155deg, var(--color-bg-elev) 0%, var(--color-bg-alt) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.energy-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.6), transparent 50%, rgba(56, 189, 248, 0.6));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.energy-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-6);
}

.energy-card__chip {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-accent);
    padding: 6px 10px;
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 999px;
}

.energy-card__pulse {
    position: relative;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-success);
    margin-top: 6px;
    margin-right: 6px;
}

.energy-card__pulse::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid var(--color-success);
    animation: pulse-ring 1.8s ease-out infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(0.7); opacity: 1; }
    100% { transform: scale(1.6); opacity: 0; }
}

.energy-card__title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.2vw, 1.6rem);
    line-height: 1.15;
    color: var(--color-text-inverse);
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.energy-card__subtitle {
    color: var(--color-text-inverse-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: var(--space-4);
}

.energy-card__wave {
    flex: 1;
    min-height: 90px;
    margin: var(--space-4) 0;
    position: relative;
}

.energy-card__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    padding-top: var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: auto;
}

.energy-stat__label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-inverse-muted);
    margin-bottom: var(--space-1);
}

.energy-stat__value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-inverse);
}

.energy-card__bolt {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    width: 100px;
    height: 100px;
    opacity: 0.08;
    color: var(--color-accent);
    pointer-events: none;
}

/* Hero scroll indicator */
.hero__scroll {
    position: absolute;
    left: 50%;
    bottom: var(--space-8);
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-inverse-muted);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 500;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--color-accent));
    animation: scroll-down 2.2s ease-in-out infinite;
}

@keyframes scroll-down {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.01% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   Page Header (для внутренних страниц)
   ============================================ */
.page-header {
    position: relative;
    background-color: var(--color-bg);
    color: var(--color-text-inverse);
    padding: var(--space-16) 0 var(--space-20);
    overflow: hidden;
}

.page-header__grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at top, black 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at top, black 20%, transparent 75%);
}

.page-header__glow {
    position: absolute;
    top: -200px;
    right: -150px;
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
    pointer-events: none;
}

.page-header__inner {
    position: relative;
    max-width: 760px;
}

.page-header__title {
    font-size: clamp(2.2rem, 4.5vw, 3.75rem);
    color: var(--color-text-inverse);
    margin: var(--space-4) 0 var(--space-4);
    letter-spacing: -0.03em;
}

.page-header__subtitle {
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    color: var(--color-text-inverse-muted);
    max-width: 580px;
}

.breadcrumbs {
    display: flex;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--color-text-inverse-muted);
    margin-bottom: var(--space-6);
}

.breadcrumbs a:hover {
    color: var(--color-accent);
}

.breadcrumbs__sep {
    opacity: 0.4;
}

.breadcrumbs__current {
    color: var(--color-accent);
}

/* ============================================
   Advantages Cards
   ============================================ */
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-16);
}

.section-head__title {
    margin: var(--space-4) 0 var(--space-4);
}

.advantages {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.advantage-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--t-base);
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-base);
}

.advantage-card:hover {
    transform: translateY(-6px);
    border-color: transparent;
    box-shadow: var(--shadow-lg);
}

.advantage-card:hover::before {
    transform: scaleX(1);
}

.advantage-card__icon {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(139, 92, 246, 0.12));
    color: var(--color-primary);
    margin-bottom: var(--space-6);
}

.advantage-card__icon svg {
    width: 28px;
    height: 28px;
}

.advantage-card__number {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-soft);
    opacity: 0.5;
}

.advantage-card__title {
    font-size: 1.3rem;
    margin-bottom: var(--space-3);
}

.advantage-card__text {
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ============================================
   About preview (двухколоночный блок)
   ============================================ */
.about-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-preview__text p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
    line-height: 1.75;
}

.about-preview__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-top: var(--space-8);
    box-shadow: var(--shadow-md);
}

.stat {
    text-align: center;
}

.stat__value {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.stat__label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-soft);
    letter-spacing: 0.02em;
}

/* Visual block для "О нас" */
.about-preview__visual {
    position: relative;
    aspect-ratio: 1/1.05;
    background: linear-gradient(155deg, var(--color-bg) 0%, var(--color-bg-elev) 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: white;
}

.about-preview__visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.6;
}

.about-preview__visual-top {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.about-preview__visual-badge {
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: var(--color-accent);
    padding: var(--space-2) var(--space-4);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.about-preview__visual-code {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-inverse-muted);
    letter-spacing: 0.1em;
}

.about-preview__visual-main {
    position: relative;
    z-index: 1;
}

.about-preview__visual-title {
    font-family: var(--font-display);
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-text-inverse);
    margin-bottom: var(--space-5);
    max-width: 280px;
}

.about-preview__visual-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.about-preview__visual-tags li {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: var(--space-2) var(--space-3);
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: var(--color-primary-light);
}

.about-preview__visual-label {
    color: var(--color-text-inverse-muted);
    font-size: 0.85rem;
    line-height: 1.55;
    max-width: 300px;
}

.about-preview__visual-deco {
    position: absolute;
    top: 50%;
    right: -8%;
    transform: translateY(-50%);
    width: min(55%, 220px);
    aspect-ratio: 1;
    pointer-events: none;
    color: var(--color-primary);
}

.about-preview__visual-ring {
    width: 100%;
    height: 100%;
    animation: visual-ring-spin 48s linear infinite;
}

@keyframes visual-ring-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================
   Info Panel (для About)
   ============================================ */
.info-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    padding: var(--space-10);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.info-panel__heading {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
}

.info-panel__heading-icon {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.info-list__item {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: var(--space-4);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--color-border);
}

.info-list__item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-list__label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-soft);
    padding-top: 2px;
}

.info-list__value {
    font-size: 0.975rem;
    color: var(--color-text);
    font-weight: 500;
    line-height: 1.5;
}

/* Principles (для About) */
.principles {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.principle-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--t-base);
}

.principle-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.principle-card__num {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.principle-card__num::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--color-primary);
}

.principle-card__title {
    font-size: 1.3rem;
    margin-bottom: var(--space-3);
}

.principle-card__text {
    color: var(--color-text-muted);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Leadership card */
.leader-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-10);
    background: linear-gradient(155deg, var(--color-bg) 0%, var(--color-bg-elev) 100%);
    color: white;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.leader-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.6;
}

.leader-card__avatar {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-bg);
}

.leader-card__content {
    position: relative;
}

.leader-card__role {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-2);
}

.leader-card__name {
    font-size: 1.75rem;
    color: white;
    margin-bottom: var(--space-3);
}

.leader-card__desc {
    color: var(--color-text-inverse-muted);
    line-height: 1.65;
    max-width: 560px;
}

/* ============================================
   Services / Trading
   ============================================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
}

.feature-card {
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    position: relative;
}

.feature-card:hover {
    background: var(--color-bg);
    color: white;
    border-color: var(--color-bg);
    transform: translateY(-4px);
}

.feature-card:hover .feature-card__title {
    color: white;
}

.feature-card:hover .feature-card__text {
    color: var(--color-text-inverse-muted);
}

.feature-card:hover .feature-card__icon {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-accent);
}

.feature-card__icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    background: rgba(56, 189, 248, 0.08);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-5);
    transition: all var(--t-base);
}

.feature-card__icon svg {
    width: 22px;
    height: 22px;
}

.feature-card__title {
    font-size: 1.05rem;
    margin-bottom: var(--space-3);
    transition: color var(--t-base);
}

.feature-card__text {
    font-size: 0.925rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    transition: color var(--t-base);
}

/* Benefits — horizontal list */
.benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.benefit {
    position: relative;
    padding-top: var(--space-8);
    border-top: 2px solid var(--color-accent);
}

.benefit__label {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.benefit__title {
    font-size: 1.375rem;
    margin-bottom: var(--space-4);
}

.benefit__text {
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* Steps — процесс */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
    position: relative;
}

.step {
    position: relative;
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--t-base);
}

.step:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.step__num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(180deg, var(--color-primary) 0%, rgba(56, 189, 248, 0.3) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--space-5);
    letter-spacing: -0.04em;
}

.step__title {
    font-size: 1.15rem;
    margin-bottom: var(--space-3);
}

.step__text {
    font-size: 0.925rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.step__arrow {
    position: absolute;
    right: -30px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-soft);
    opacity: 0.4;
    z-index: 2;
}

.step:last-child .step__arrow {
    display: none;
}

/* ============================================
   Documents Page
   ============================================ */
.docs-intro {
    max-width: 800px;
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--space-16);
}

.docs-group {
    margin-bottom: var(--space-16);
}

.docs-group__header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--color-border);
}

.docs-group__icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.docs-group__title {
    font-size: 1.625rem;
    letter-spacing: -0.02em;
}

.docs-group__count {
    margin-left: auto;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-soft);
    letter-spacing: 0.08em;
}

.doc-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.doc-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-5);
    align-items: center;
    padding: var(--space-5) var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    cursor: pointer;
}

.doc-item:hover {
    border-color: var(--color-primary);
    background: rgba(56, 189, 248, 0.02);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.doc-item__file {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    background: rgba(56, 189, 248, 0.08);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.doc-item__title {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 2px;
    line-height: 1.4;
}

.doc-item__desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.doc-item__link {
    color: var(--color-text-soft);
    transition: all var(--t-fast);
}

.doc-item:hover .doc-item__link {
    color: var(--color-primary);
    transform: translate(2px, -2px);
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-12);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.contact-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-5);
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
}

.contact-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.contact-item__icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-item__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-soft);
    margin-bottom: var(--space-2);
}

.contact-item__value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.5;
}

.contact-item__value a:hover {
    color: var(--color-primary);
}

/* Form */
.form-card {
    padding: var(--space-10);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.form-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
}

.form-card__subtitle {
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-field--full {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-label .required {
    color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-4);
    background: var(--color-surface-alt);
    border: 1.5px solid transparent;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--color-text);
    transition: all var(--t-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
    font-family: inherit;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234b5666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-10);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    cursor: pointer;
}

.form-checkbox input {
    margin-top: 3px;
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-submit {
    margin-top: var(--space-4);
    width: 100%;
}

/* Transport info */
.transport-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
    margin-top: var(--space-12);
}

.transport-card {
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.transport-card__icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    background: rgba(56, 189, 248, 0.08);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-4);
}

.transport-card__title {
    font-size: 1rem;
    margin-bottom: var(--space-2);
}

.transport-card__text {
    font-size: 0.925rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    position: relative;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    color: white;
    padding: var(--space-20) 0;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

.cta__glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: var(--color-accent);
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.15;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.cta__inner {
    position: relative;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.cta__title {
    font-size: clamp(1.8rem, 3.5vw, 2.75rem);
    margin: var(--space-4) 0 var(--space-4);
    color: white;
}

.cta__text {
    color: var(--color-text-inverse-muted);
    margin-bottom: var(--space-8);
    font-size: 1.125rem;
}

.cta__buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-3);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg);
    color: var(--color-text-inverse-muted);
    padding: var(--space-20) 0 var(--space-8);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
}

.footer__main {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: var(--space-12);
    padding-bottom: var(--space-12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand .logo__name,
.footer__brand .logo__tagline {
    color: white;
}

.footer__desc {
    margin-top: var(--space-5);
    font-size: 0.925rem;
    line-height: 1.65;
    max-width: 320px;
}

.footer__col-title {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: white;
    margin-bottom: var(--space-5);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer__links a {
    font-size: 0.95rem;
    color: var(--color-text-inverse-muted);
    transition: color var(--t-fast);
}

.footer__links a:hover {
    color: var(--color-accent);
}

.footer__contacts {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.footer__contact-item {
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
    font-size: 0.925rem;
    line-height: 1.5;
}

.footer__contact-item svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    margin-top: 2px;
}

.footer__contact-item a:hover {
    color: var(--color-accent);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-6);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer__legal {
    font-size: 0.8rem;
    opacity: 0.7;
}

/* ============================================
   Animations
   ============================================ */
.fade-up {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.9s ease, transform 0.9s ease;
}

.fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger */
.fade-up:nth-child(1) { transition-delay: 0ms; }
.fade-up:nth-child(2) { transition-delay: 100ms; }
.fade-up:nth-child(3) { transition-delay: 200ms; }
.fade-up:nth-child(4) { transition-delay: 300ms; }
.fade-up:nth-child(5) { transition-delay: 400ms; }

/* ============================================
   Responsive
   ============================================ */

/* ≤ 1200px — прячем полный телефон в шапке, оставляем только кнопку */
@media (max-width: 1200px) {
    .header__phone span,
    .header__phone {
        font-size: 0.85rem;
    }
    .nav__link {
        padding: var(--space-2) var(--space-2);
        font-size: 0.875rem;
    }
    .logo__tagline {
        display: none;
    }
}

/* ≤ 1080px — прячем телефон в шапке */
@media (max-width: 1080px) {
    .header__phone {
        display: none;
    }
}

/* ≤ 1024px — планшет */
@media (max-width: 1024px) {
    .hero__inner { grid-template-columns: 1fr; gap: var(--space-10); }
    .hero__visual { max-width: 440px; margin: 0 auto; width: 100%; }
    .advantages { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
    .step__arrow { display: none; }
    .about-preview { grid-template-columns: 1fr; gap: var(--space-10); }
    .about-preview__visual { max-width: 500px; margin: 0 auto; width: 100%; aspect-ratio: 16/11; }
    .info-panel { grid-template-columns: 1fr; gap: var(--space-10); padding: var(--space-8); }
    .principles { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: var(--space-8); }
    .footer__main { grid-template-columns: 1fr 1fr; gap: var(--space-10); }
    .section { padding: var(--space-20) 0; }
    .hero__scroll { display: none; }
}

/* ≤ 880px — сворачиваем меню в бургер */
@media (max-width: 880px) {
    .nav-toggle {
        display: block;
    }

    .nav-overlay {
        display: block;
        pointer-events: none;
    }

    .nav-overlay.is-visible {
        pointer-events: auto;
    }

    .header__nav-wrapper {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 85%;
        max-width: 360px;
        z-index: 200;
        background: var(--color-bg);
        border-left: 1px solid rgba(255, 255, 255, 0.08);
        padding: calc(76px + var(--space-8)) var(--space-6) var(--space-8);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: var(--space-8);
        transform: translateX(100%);
        visibility: hidden;
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                    visibility 0.35s;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .header__nav-wrapper.is-open {
        transform: translateX(0);
        visibility: visible;
    }

    .nav {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-1);
        width: 100%;
    }

    .nav__link {
        padding: var(--space-4) var(--space-5);
        border-radius: var(--radius-md);
        font-size: 1.05rem;
        border: 1px solid transparent;
        -webkit-tap-highlight-color: transparent;
    }

    .nav__link:hover,
    .nav__link:active {
        background: rgba(255, 255, 255, 0.06);
    }

    .nav__link.is-active::after {
        display: none;
    }

    .nav__link.is-active {
        background: rgba(139, 92, 246, 0.08);
        border-color: rgba(139, 92, 246, 0.2);
    }

    .header__cta {
        margin-top: auto;
        padding-top: var(--space-6);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
        width: 100%;
    }

    .header__phone {
        display: flex;
        justify-content: center;
        font-size: 1rem;
        padding: var(--space-3);
    }

    .header__phone svg {
        width: 18px;
        height: 18px;
    }

    .header__cta .btn {
        width: 100%;
        padding: var(--space-4);
        font-size: 1rem;
    }
}

/* ≤ 768px — мобильный */
@media (max-width: 768px) {
    .section { padding: var(--space-16) 0; }
    .hero { padding: var(--space-12) 0 var(--space-16); min-height: auto; }
    .hero__meta { gap: var(--space-5); flex-wrap: wrap; }
    .hero__meta-item { min-width: 80px; }
    .advantages { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr; }
    .benefits { grid-template-columns: 1fr; gap: var(--space-6); }
    .about-preview__stats { grid-template-columns: 1fr; gap: var(--space-4); }
    .form-grid { grid-template-columns: 1fr; }
    .transport-info { grid-template-columns: 1fr; }
    .info-list__item { grid-template-columns: 1fr; gap: var(--space-2); }
    .info-list__label { font-size: 0.7rem; }
    .leader-card { grid-template-columns: 1fr; text-align: center; padding: var(--space-8); gap: var(--space-6); }
    .leader-card__avatar { margin: 0 auto; width: 100px; height: 100px; font-size: 2rem; }
    .doc-item { grid-template-columns: auto 1fr; padding: var(--space-4) var(--space-5); gap: var(--space-4); }
    .doc-item__link { display: none; }
    .docs-group__header { flex-wrap: wrap; gap: var(--space-3); }
    .docs-group__count { margin-left: 0; flex-basis: 100%; order: 3; padding-left: 64px; }
    .footer__main { grid-template-columns: 1fr; gap: var(--space-8); }
    .footer__bottom { text-align: center; justify-content: center; flex-direction: column; gap: var(--space-2); }
    .form-card { padding: var(--space-6); }
    .page-header { padding: var(--space-12) 0 var(--space-16); }
    .hero__visual { max-width: 100%; }
    .energy-card { padding: var(--space-6); }
}

/* ≤ 560px */
@media (max-width: 560px) {
    .container { padding: 0 var(--space-4); }
    .hero__inner { gap: var(--space-8); }
    .hero__meta { gap: var(--space-4); }
    .hero__meta-value { font-size: 1.1rem; }
    .hero__meta-label { font-size: 0.65rem; }
    .hero__cta { flex-direction: column; align-items: stretch; gap: var(--space-3); }
    .hero__cta .btn { width: 100%; }
    .cta__buttons { flex-direction: column; align-items: stretch; }
    .cta__buttons .btn { width: 100%; }
    .section-head__title { font-size: 1.6rem; }
    .info-panel { padding: var(--space-6); }
    .advantage-card, .principle-card, .feature-card, .step { padding: var(--space-6); }
    .form-card { padding: var(--space-5); }
    .about-preview__visual { padding: var(--space-6); aspect-ratio: 4/3; }
    .energy-card__title { font-size: 1.2rem; }
}

/* ≤ 400px */
@media (max-width: 400px) {
    .logo__name { font-size: 0.9rem; }
    .logo__mark { width: 36px; height: 36px; }
    .logo__mark svg { width: 20px; height: 20px; }
    .hero__meta {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-3);
    }
    .hero__meta-value { font-size: 0.95rem; }
    .docs-group__title { font-size: 1.3rem; }
    .docs-group__count { padding-left: 60px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .fade-up { opacity: 1; transform: none; }
}