:root {
    --color-bg: #030712;
    --color-panel: rgba(15, 23, 42, 0.45);
    --color-panel-border: rgba(255, 255, 255, 0.07);
    --color-panel-hover: rgba(30, 41, 59, 0.6);
    
    --color-text-primary: #f3f4f6;
    --color-text-secondary: #9ca3af;
    --color-text-muted: #6b7280;
    
    --color-primary: #6366f1;
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    --color-secondary: #a855f7;
    --color-accent-cyan: #06b6d4;
    --color-accent-emerald: #10b981;
    --color-accent-amber: #f59e0b;
    --color-danger: #ef4444;
    
    --grad-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --grad-emerald: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
    --grad-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --grad-dark: linear-gradient(180deg, rgba(17, 24, 39, 0.8) 0%, rgba(3, 7, 18, 0.95) 100%);
    --grad-card-featured: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.05) 100%);
    
    --max-width: 960px;
    --header-height: 56px;
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.glow-bg {
    position: absolute;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.13;
    pointer-events: none;
    z-index: 0;
}

.glow-primary {
    top: -10vw;
    left: -10vw;
    background: radial-gradient(circle, var(--color-primary) 0%, rgba(99, 102, 241, 0) 70%);
}

.glow-secondary {
    top: 30vw;
    right: -20vw;
    background: radial-gradient(circle, var(--color-secondary) 0%, rgba(168, 85, 247, 0) 70%);
}

.glow-tertiary {
    bottom: -10vw;
    left: 20vw;
    background: radial-gradient(circle, var(--color-accent-cyan) 0%, rgba(6, 118, 212, 0) 70%);
}

.gradient-text {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-panel {
    background: var(--color-panel);
    border: 1px solid var(--color-panel-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.4);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.glass-panel:hover {
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 15px 50px -5px rgba(0, 0, 0, 0.5);
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.25rem);
}

h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
}

h3 {
    font-size: clamp(1.3rem, 2vw, 1.75rem);
}

h4 {
    font-size: 1.15rem;
}

p {
    color: var(--color-text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: none;
    outline: none;
}

.btn-icon svg {
    transition: transform var(--transition-fast);
}

.btn-icon:hover svg {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-primary);
    border: 1px solid var(--color-panel-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.form-select, .form-input {
    width: 100%;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-md);
    color: var(--color-text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    padding: 12px 16px;
    outline: none;
    transition: all var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
}

.form-select:hover, .form-input:hover {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(15, 23, 42, 0.95);
}

.form-select:focus, .form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
    background: rgba(15, 23, 42, 0.95);
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2.5' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 14px;
    padding-right: 44px;
}

.form-select option {
    background-color: #0f172a;
    color: #f3f4f6;
    padding: 12px;
    font-size: 0.95rem;
}

.form-select:focus, .form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
    background: rgba(255, 255, 255, 0.07);
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(3, 7, 18, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-panel-border);
    z-index: 100;
}

.header-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.sage-logo-img {
    height: 26px;
    width: auto;
    display: block;
}

.logo-text {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: 0.02em;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.header-actions {
    display: flex;
    align-items: center;
}

.header-actions .btn {
    padding: 6px 14px;
    font-size: 0.85rem;
    height: 32px;
    border-radius: 6px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 24px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

main.page-content {
    position: relative;
    z-index: 1;
    padding-top: var(--header-height);
}

section {
    padding: clamp(1.5rem, 3.5vw, 4rem) 0;
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    max-width: 700px;
    margin: 0 auto 36px auto;
    text-align: center;
}

.section-category {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    display: inline-block;
    margin-bottom: 8px;
}

.section-title {
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.05rem;
}

.hero-section {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 0;
    padding-bottom: 0;
    text-align: center;
    position: relative;
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-title {
    margin-bottom: 18px;
    line-height: 1.12;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2.2vw, 1.25rem);
    max-width: 750px;
    margin: 0 auto 32px auto;
}

.hero-cta-group {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.recommendations-section {
    background: rgba(2, 6, 23, 0.4);
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.advisory-card {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    padding: clamp(1.5rem, 3vw, 3rem);
    align-items: center;
}

.calculator-inputs {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.calculator-result {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.calculator-result::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--grad-primary);
}

.result-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.result-tier-name {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
}

.result-tier-desc {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
}

.result-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 4px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 12px 0;
}

.metric-box {
    text-align: center;
}

.metric-val {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-text-primary);
}

.metric-lbl {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

.filter-wrapper {
    display: flex;
    justify-content: center;
    max-width: fit-content;
    margin: 12px auto 28px auto;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-panel-border);
    border-radius: 9999px;
    padding: 4px;
    gap: 4px;
}

.filter-chip {
    background: none;
    border: none;
    outline: none;
    color: var(--color-text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    padding: 6px 16px;
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    color: var(--color-text-primary);
}

.filter-chip.active {
    background: rgba(255, 255, 255, 0.07);
    color: var(--color-text-primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.artifacts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
}

.tier-card {
    padding: 22px 26px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
    overflow: hidden;
}

.tier-card.featured {
    border-color: rgba(99, 102, 241, 0.25);
    background: var(--grad-card-featured);
    box-shadow: 0 10px 40px -10px rgba(99, 102, 241, 0.15);
}

.tier-card.featured:hover {
    border-color: rgba(99, 102, 241, 0.45);
    box-shadow: 0 15px 50px -5px rgba(99, 102, 241, 0.25);
}

.featured-highlight {
    animation: card-glow-flash 1.5s ease-in-out 2;
    border-color: var(--color-primary) !important;
}

.card-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--grad-primary);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    animation: badge-pulse 3s infinite;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.tier-icon-wrapper {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-panel-border);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.tier-icon-wrapper svg {
    width: 22px;
    height: 22px;
    display: block;
}

.tier-card.featured .tier-icon-wrapper {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
}

.tier-meta {
    display: flex;
    flex-direction: column;
}

.tier-tagline {
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.tier-price-row {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.tier-size {
    font-family: 'Outfit', sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
}

.tier-type-tag {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 9999px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.tier-type-tag.gpu {
    background: rgba(6, 182, 212, 0.1);
    color: var(--color-accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.tier-type-tag.cpu {
    background: rgba(16, 182, 129, 0.1);
    color: var(--color-accent-emerald);
    border: 1px solid rgba(16, 182, 129, 0.2);
}

.tier-desc {
    font-size: 0.85rem;
    line-height: 1.5;
    min-height: 48px;
}

.tier-features-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 4px 0;
    flex-grow: 1;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.82rem;
}

.feature-icon {
    font-weight: 700;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-top: 2px;
}

.feature-icon.tick {
    background: rgba(16, 182, 129, 0.15);
    color: var(--color-accent-emerald);
}

.feature-icon.cross {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.feature-text.disabled {
    color: var(--color-text-muted);
}

.tier-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: auto;
}

.table-scroll-container {
    overflow-x: auto;
    width: 100%;
    margin-top: 8px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.92rem;
    min-width: 850px;
}

.comparison-table th, .comparison-table td {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.comparison-table th {
    background: rgba(15, 23, 42, 0.2);
    font-family: 'Outfit', sans-serif;
    vertical-align: bottom;
}

.sticky-col {
    position: sticky;
    left: 0;
    background: #090e1a;
    z-index: 10;
    width: 250px;
    font-weight: 600;
}

.comparison-table tr:hover .sticky-col {
    background: #111827;
}

.comparison-table th:not(:first-child), .comparison-table td:not(:first-child) {
    text-align: center;
    width: 20%;
}

.highlight-th {
    border-top: 2px solid var(--color-primary);
    background: rgba(99, 102, 241, 0.04) !important;
}

.highlight-td {
    background: rgba(99, 102, 241, 0.02) !important;
}

.tier-th-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    background: var(--color-primary);
    color: #fff;
    padding: 2px 7px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.tier-th-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.tier-th-sub {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.section-row td {
    background: rgba(255, 255, 255, 0.02);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--color-primary);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 12px 20px;
}

.label-sub {
    display: block;
    font-size: 0.78rem;
    margin-top: 3px;
}

.font-code {
    font-family: 'Fira Code', monospace;
    font-size: 0.82rem;
}

.text-high {
    color: var(--color-text-primary);
    font-weight: 600;
}

.font-weight-600 {
    font-weight: 600;
}

.checksum-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
}

.checksum-viewer-card {
    width: 100%;
    padding: clamp(1.5rem, 2.5vw, 2.5rem);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.card-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-icon {
    font-size: 1.35rem;
}

.checksum-block {
    background: rgba(3, 7, 18, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-md);
    padding: 14px;
    max-height: 220px;
    overflow-y: auto;
}

.checksum-block pre {
    margin: 0;
}

.checksum-block code {
    font-size: 0.82rem;
    white-space: pre;
    color: var(--color-text-secondary);
    font-family: 'Fira Code', monospace;
}

.main-footer {
    background: rgba(2, 6, 23, 0.8);
    border-top: 1px solid var(--color-panel-border);
    padding: 40px 0 0 0;
    font-size: 0.92rem;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px 40px 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-brand {
    max-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.brand-slogan {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.footer-links-group {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

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

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-link {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px 24px 0 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.footer-bottom p {
    margin: 0 !important;
}

.footer-credit {
    font-weight: 500;
}

@keyframes pulse-live {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.5; box-shadow: 0 0 12px var(--color-accent-emerald); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes badge-pulse {
    0%, 100% { opacity: 0.95; filter: brightness(1); }
    50% { opacity: 0.75; filter: brightness(1.15); box-shadow: 0 0 10px rgba(99, 102, 241, 0.4); }
}

@keyframes card-glow-flash {
    0%, 100% { box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.4); }
    50% { box-shadow: 0 0 30px rgba(99, 102, 241, 0.6); }
}

@media (max-width: 1024px) {
    .advisory-card {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .artifacts-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
        gap: 16px;
    }

    .mobile-menu-btn {
        display: flex;
    }
    
    .header-actions {
        display: none;
    }
    
    .hero-cta-group {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-links-group {
        gap: 30px;
    }
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}