/* ============================================
   MGC Loyalty - Product Owner Test Assignment
   Landing Page Styles
   ============================================ */

:root {
    --color-bg: #0a0a0f;
    --color-bg-light: #12121a;
    --color-bg-card: #1a1a25;
    --color-bg-card-hover: #22222f;
    --color-surface: #1e1e2a;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);

    --color-text: #e8e8ef;
    --color-text-secondary: #9a9ab0;
    --color-text-muted: #6a6a80;

    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-primary-glow: rgba(99, 102, 241, 0.15);

    --color-accent: #f59e0b;
    --color-accent-light: #fbbf24;
    --color-accent-glow: rgba(245, 158, 11, 0.15);

    --color-success: #10b981;
    --color-success-glow: rgba(16, 185, 129, 0.15);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.1);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Progress Bar */
.progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    z-index: 1001;
    transition: width 0.1s linear;
    width: 0%;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.nav--scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--color-text) !important;
    letter-spacing: -0.02em;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    transition: transform var(--transition);
}

.nav__logo:hover {
    transform: scale(1.05);
    color: var(--color-text) !important;
}

.nav__links {
    display: flex;
    gap: 32px;
}

.nav__links a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
}

.nav__links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
    color: var(--color-text);
}

.nav__links a:hover::after,
.nav__links a.active::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__particles {
    position: absolute;
    inset: 0;
}

.hero__gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 102, 241, 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(245, 158, 11, 0.06), transparent),
        radial-gradient(ellipse 50% 50% at 20% 80%, rgba(99, 102, 241, 0.08), transparent);
}

.hero__container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 80px;
    width: 100%;
}

.hero__content {
    flex: 1;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.813rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero__title-accent {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero__cta {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.hero__addressed {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.938rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
    color: white;
}

.btn--outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-hover);
}

.btn--outline:hover {
    background: var(--color-bg-card);
    border-color: var(--color-primary);
    color: var(--color-text);
    transform: translateY(-2px);
}

/* Hero Photo */
.hero__photo {
    flex-shrink: 0;
    text-align: center;
}

.hero__photo-frame {
    position: relative;
    width: 280px;
    height: 340px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 20px;
}

.hero__photo-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.hero__photo-border {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    border: 2px solid rgba(99, 102, 241, 0.3);
    pointer-events: none;
}

.hero__photo-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.hero__photo-info p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

.hero__scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--color-text-muted);
    border-radius: 12px;
    position: relative;
}

.hero__scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ============================================
   Section Base
   ============================================ */
.section {
    padding: 120px 0;
    position: relative;
}

.section__header {
    text-align: center;
    margin-bottom: 64px;
}

.section__label {
    display: inline-block;
    font-size: 0.813rem;
    font-weight: 600;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.section__title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.accent {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__desc {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Product Section
   ============================================ */
.section--product {
    background: var(--color-bg-light);
}

.product__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.product__lead {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 32px;
}

.product__lead strong {
    color: var(--color-primary-light);
}

.product__core h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product__core-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.product__core-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.product__core-item:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-card-hover);
    transform: translateX(4px);
}

.product__core-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.product__core-icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary-light);
}

.product__core-item span {
    font-weight: 500;
}

/* Scenarios */
.product__scenarios h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product__scenario-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product__scenario {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    cursor: default;
}

.product__scenario:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-card-hover);
    transform: translateX(4px);
}

.product__scenario-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent);
    font-family: var(--font-sans);
}

.product__scenario span:last-child {
    font-weight: 500;
    font-size: 0.938rem;
}

/* Insight */
.product__insight {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(245, 158, 11, 0.05));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
}

.product__insight-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.product__insight-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-accent-light);
}

.product__insight-text h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-accent-light);
    margin-bottom: 8px;
}

.product__insight-text p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.product__insight-text strong {
    color: var(--color-text);
}

/* ============================================
   Hypotheses Section
   ============================================ */
.hypotheses__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.hypothesis {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.hypothesis::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition);
}

.hypothesis:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.hypothesis:hover::before {
    opacity: 1;
}

.hypothesis__number {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(99, 102, 241, 0.1);
    line-height: 1;
    margin-bottom: 16px;
    font-family: var(--font-sans);
}

.hypothesis__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}

.hypothesis__thesis {
    color: var(--color-text-secondary);
    font-size: 0.938rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.hypothesis__details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.hypothesis__details[data-expanded="true"] {
    max-height: 800px;
}

.hypothesis__details-inner {
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.hypothesis__details-inner h4 {
    font-size: 0.813rem;
    font-weight: 600;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    margin-top: 16px;
}

.hypothesis__details-inner h4:first-child {
    margin-top: 0;
}

.hypothesis__details-inner ul {
    padding-left: 0;
}

.hypothesis__details-inner li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 6px;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.hypothesis__details-inner li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

.hypothesis__toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--color-primary-light);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.hypothesis__toggle:hover {
    color: var(--color-accent-light);
}

.hypothesis__toggle svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition);
}

.hypothesis__toggle.expanded svg {
    transform: rotate(180deg);
}

.hypothesis__toggle.expanded span {
    display: none;
}

.hypothesis__toggle.expanded::before {
    content: 'Свернуть';
}

.hypothesis__tag {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--color-primary-glow);
    color: var(--color-primary-light);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* ============================================
   Strategy Section
   ============================================ */
.section--strategy {
    background: var(--color-bg-light);
}

.strategy__pillars {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 80px;
}

.strategy__pillar {
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition);
}

.strategy__pillar:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.strategy__pillar-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    color: white;
    margin: 0 auto 16px;
}

.strategy__pillar p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Strategy Timeline */
.strategy__timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.strategy__stage {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
}

.strategy__stage:last-child {
    margin-bottom: 0;
}

.strategy__stage-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.strategy__stage-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.strategy__stage-dot::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(99, 102, 241, 0.3);
}

.strategy__stage-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-border));
    margin-top: 8px;
}

.strategy__stage-content {
    padding: 24px 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    flex: 1;
    transition: all var(--transition);
}

.strategy__stage-content:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-glow);
}

.strategy__stage-header {
    margin-bottom: 12px;
}

.strategy__stage-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.strategy__stage-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 4px;
}

.strategy__stage-content p {
    color: var(--color-text-secondary);
    font-size: 0.938rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.strategy__stage-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.strategy__stage-tags span {
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-primary-glow);
    color: var(--color-primary-light);
    border: 1px solid rgba(99, 102, 241, 0.15);
}

/* ============================================
   Metrics Section
   ============================================ */
.metrics__tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 40px;
}

.metrics__tab {
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-sans);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.metrics__tab:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text);
}

.metrics__tab.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-color: var(--color-primary);
    color: white;
}

.metrics__panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

.metrics__panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.metrics__panel-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.metric-card {
    padding: 28px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.metric-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.metric-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.metric-card__icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary-light);
}

.metric-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.metric-card p {
    font-size: 0.813rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ============================================
   90-Day Plan Section
   ============================================ */
.section--plan {
    background: var(--color-bg-light);
}

.plan__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.plan__phase {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
}

.plan__phase:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.plan__phase-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.plan__phase-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: white;
}

.plan__phase-circle--mid {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
}

.plan__phase-circle--end {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

.plan__phase-circle span {
    font-size: 1.25rem;
    font-weight: 800;
    line-height: 1;
}

.plan__phase-circle small {
    font-size: 0.625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.plan__phase-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
}

.plan__items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.plan__items li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.plan__items svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-success);
    margin-top: 1px;
}

/* ============================================
   Conclusion Section
   ============================================ */
.conclusion__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 64px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.conclusion__content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-success));
}

.conclusion__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--color-success-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.conclusion__icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-success);
}

.conclusion__title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.conclusion__text {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.conclusion__text strong {
    color: var(--color-text);
}

.conclusion__directions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.conclusion__direction {
    padding: 24px;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-md);
    text-align: center;
}

.conclusion__direction-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.conclusion__direction-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary-light);
}

.conclusion__direction p {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.conclusion__priorities {
    text-align: left;
}

.conclusion__priorities h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
}

.conclusion__priorities ol {
    counter-reset: priorities;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.conclusion__priorities li {
    counter-increment: priorities;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    background: rgba(99, 102, 241, 0.04);
    border-radius: var(--radius-sm);
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.conclusion__priorities li:hover {
    background: rgba(99, 102, 241, 0.08);
    transform: translateX(4px);
}

.conclusion__priorities li::before {
    content: counter(priorities);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.813rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 48px 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

.footer__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.footer__photo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.footer__author h4 {
    font-size: 1rem;
    font-weight: 600;
}

.footer__author p {
    font-size: 0.813rem;
    color: var(--color-text-muted);
}

.footer__meta {
    text-align: right;
}

.footer__meta p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer__company {
    font-size: 0.813rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* ============================================
   Animations
   ============================================ */
.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Particle */
.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.4);
    pointer-events: none;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .hero__container {
        gap: 48px;
    }

    .product__grid {
        grid-template-columns: 1fr;
    }

    .hypotheses__grid {
        grid-template-columns: 1fr;
    }

    .strategy__pillars {
        grid-template-columns: repeat(2, 1fr);
    }

    .metrics__panel-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .plan__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav__links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .nav__links.open {
        display: flex;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__container {
        flex-direction: column-reverse;
        text-align: center;
        gap: 40px;
    }

    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__cta {
        justify-content: center;
    }

    .hero__photo-frame {
        width: 200px;
        height: 240px;
        margin: 0 auto 20px;
    }

    .section {
        padding: 80px 0;
    }

    .strategy__pillars {
        grid-template-columns: 1fr;
    }

    .strategy__stage {
        gap: 20px;
    }

    .metrics__panel-grid {
        grid-template-columns: 1fr;
    }

    .conclusion__content {
        padding: 32px 24px;
    }

    .conclusion__directions {
        grid-template-columns: 1fr;
    }

    .footer__content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer__meta {
        text-align: center;
    }

    .metrics__tabs {
        gap: 4px;
    }

    .metrics__tab {
        font-size: 0.75rem;
        padding: 8px 12px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 16px 60px;
    }

    .hero__cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}