/* ============================================================
   NEX - Modern Bento Grid Design
   Clean, refined, professional
   ============================================================ */

/* ==================== VARIABLES ==================== */
:root {
    --bg: #09090B;
    --bg-card: #18181B;
    --bg-elevated: #27272A;

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --text: #FAFAFA;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;

    --blue: #3B82F6;
    --blue-soft: rgba(59, 130, 246, 0.15);
    --green: #22C55E;
    --green-soft: rgba(34, 197, 94, 0.15);
    --orange: #F97316;
    --orange-soft: rgba(249, 115, 22, 0.15);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);

    --container: 1200px;
    --gap: 24px;

    --logo-gradient: linear-gradient(135deg, #ffffff 0%, #b0b0b0 50%, #e0e0e0 100%);
}

/* Light Theme - 與 member_management_site 風格一致 */
[data-theme="light"] {
    --bg: #FAFAFA;
    --bg-card: #FFFFFF;
    --bg-elevated: #F5F5F5;

    --border: rgba(0, 0, 0, 0.06);
    --border-hover: rgba(0, 0, 0, 0.12);

    --text: #0f0f0f;
    --text-secondary: #525252;
    --text-muted: #737373;

    --blue: #3b82f6;
    --blue-soft: rgba(59, 130, 246, 0.1);
    --green: #22c55e;
    --green-soft: rgba(34, 197, 94, 0.1);
    --orange: #f97316;
    --orange-soft: rgba(249, 115, 22, 0.1);

    --logo-gradient: linear-gradient(135deg, #0f0f0f 0%, #0f0f0f 100%);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
}

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

/* ==================== NAVBAR ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    background: transparent;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s var(--ease);
}

.navbar.scrolled {
    background: var(--bg);
    border-bottom-color: var(--border);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
}

.navbar-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gap);
    display: flex;
    align-items: center;
    height: 64px;
}

.navbar-container .logo {
    margin-right: auto;
}

/* Logo */
.logo {
    font-size: 32px;
    font-weight: 900;
    letter-spacing: 4px;
    text-decoration: none;
    background: var(--logo-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: opacity 0.3s var(--ease);
}

.logo:hover {
    opacity: 0.8;
}

/* Nav Center */
.nav-center {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-right: 40px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.2s var(--ease);
}

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

/* Nav Right */
.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s var(--ease);
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text);
    background: var(--bg-card);
}

/* Language Switch */
.lang-switch {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s var(--ease);
}

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

.lang-btn i:first-child {
    font-size: 14px;
}

.lang-btn i:last-child {
    font-size: 10px;
    opacity: 0.6;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 140px;
    padding: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s var(--ease);
}

.lang-switch:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown a {
    display: block;
    padding: 10px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s;
}

.lang-dropdown a:hover {
    background: var(--bg-elevated);
    color: var(--text);
}

.lang-dropdown a.active {
    color: var(--blue);
}

/* Nav CTA */
.nav-cta {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    color: var(--bg);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s var(--ease);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

.nav-cta i {
    font-size: 12px;
    transition: transform 0.3s var(--ease);
}

.nav-cta:hover i {
    transform: translateX(3px);
}

/* Mobile Button */
.mobile-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-btn span {
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.mobile-btn.active span:first-child {
    transform: rotate(45deg) translate(2.5px, 2.5px);
}

.mobile-btn.active span:last-child {
    transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 88px;
    left: var(--gap);
    right: var(--gap);
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    z-index: 99;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .mobile-menu {
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu > a {
    display: block;
    padding: 14px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-radius: 10px;
    transition: all 0.2s;
}

.mobile-menu > a:hover {
    background: var(--bg-elevated);
    color: var(--text);
}

.mobile-options {
    padding: 8px 16px;
    margin-top: 8px;
    border-top: 1px solid var(--border);
}

.mobile-theme {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s var(--ease);
}

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

.mobile-theme i {
    font-size: 16px;
}

.mobile-lang {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.mobile-lang a {
    flex: 1;
    padding: 10px;
    text-align: center;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
    background: var(--bg);
    transition: all 0.2s;
}

.mobile-lang a.active {
    color: var(--text);
    background: var(--bg-elevated);
}

.mobile-cta {
    display: block;
    margin-top: 12px;
    padding: 14px;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%) !important;
    color: var(--bg) !important;
    text-align: center;
    font-weight: 600;
    border-radius: 10px;
}

/* ==================== HERO ==================== */
.hero {
    padding: 140px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Hero Background Glow Effects */
.hero::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    animation: glow 8s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 5%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    animation: glow 10s ease-in-out infinite reverse;
    pointer-events: none;
    z-index: 0;
}

.hero > .container {
    position: relative;
    z-index: 1;
}

[data-theme="light"] .hero::before {
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
}

[data-theme="light"] .hero::after {
    background: radial-gradient(circle, rgba(34, 197, 94, 0.08) 0%, transparent 70%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

/* Hero Main */
.hero-main {
    max-width: 540px;
}

.hero-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(42px, 5vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--blue) 0%, #60A5FA 50%, #93C5FD 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 12px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: var(--blue);
    color: white;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s var(--ease);
}

.btn-primary:hover {
    background: #2563EB;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.btn-primary i {
    transition: transform 0.3s var(--ease);
}

.btn-primary:hover i {
    transform: translateX(4px);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: all 0.3s var(--ease);
}

.btn-ghost:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
    color: var(--text);
}

/* Hero Bento */
.hero-bento {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
}

.bento-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    transition: all 0.4s var(--ease);
    opacity: 0;
    transform: translateY(20px);
}

.bento-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.bento-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.bento-platforms {
    grid-column: span 2;
}

.bento-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.bento-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bento-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
}

.dot.green {
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
}

.platforms-list {
    display: flex;
    gap: 12px;
}

.platform-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.platform-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
}

.platform-icon.discord { background: #5865F2; }
.platform-icon.telegram { background: #229ED9; }
.platform-icon.line { background: #00B900; }

.platform-info {
    display: flex;
    flex-direction: column;
}

.platform-info .name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.platform-info .count {
    font-size: 12px;
    color: var(--text-muted);
}

/* Bento Stat */
.bento-stat {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.bento-stat .stat-value {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 4px;
}

.bento-stat .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    width: fit-content;
}

.stat-trend.up {
    background: var(--green-soft);
    color: var(--green);
}

/* Bento Chart */
.bento-chart {
    display: flex;
    flex-direction: column;
}

.mini-bars {
    flex: 1;
    display: flex;
    align-items: flex-end;
    gap: 6px;
    padding-top: 12px;
}

.mini-bars .bar {
    flex: 1;
    height: var(--h);
    background: var(--bg-elevated);
    border-radius: 4px;
    transition: all 0.3s var(--ease);
}

.mini-bars .bar.active {
    background: var(--blue);
}

.mini-bars .bar:hover {
    background: var(--text-muted);
}

/* Exchange Colors */
.ex-okx {
    color: var(--text);
}

.ex-bybit {
    color: #F7A707;
}

.ex-binance {
    color: #F0B90B;
}

.ex-bingx {
    color: #0058FB;
}

.ex-bitget {
    color: #00F0FF;
}

/* Light mode */
[data-theme="light"] .ex-okx {
    color: #000000;
}

[data-theme="light"] .ex-bingx {
    color: #0047D4;
}

[data-theme="light"] .ex-bitget {
    color: #00B8C8;
}

/* ==================== PRODUCTS ==================== */
.products {
    padding: 120px 0;
}

/* Products Header */
.products-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: end;
    margin-bottom: 80px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--blue);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
}

.section-eyebrow::before {
    content: '';
    width: 20px;
    height: 2px;
    background: var(--blue);
}

.products-title {
    font-size: clamp(36px, 4.5vw, 52px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.header-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 400px;
    margin-left: auto;
}

/* Product Block */
.product-block {
    margin-bottom: 100px;
}

.product-block:last-child {
    margin-bottom: 0;
}

.product-block.alt {
    background: var(--bg-card);
    margin-left: calc(-1 * var(--gap));
    margin-right: calc(-1 * var(--gap));
    padding: 80px var(--gap);
    border-radius: 24px;
}

.product-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 80px;
    align-items: center;
}

.product-wrapper.reverse {
    grid-template-columns: 1.1fr 1fr;
}

.product-wrapper.reverse .product-content {
    order: 2;
}

.product-wrapper.reverse .product-preview {
    order: 1;
}

/* Product Meta */
.product-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.product-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-muted);
    font-family: 'SF Mono', 'Monaco', monospace;
}

.product-tag {
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.product-tag.blue {
    background: var(--blue-soft);
    color: var(--blue);
}

.product-tag.green {
    background: var(--green-soft);
    color: var(--green);
}

/* Product Content */
.product-name {
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    line-height: 1.2;
}

.product-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 32px;
}

/* Feature List */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 36px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature-icon {
    width: 44px;
    height: 44px;
    background: var(--blue-soft);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue);
    font-size: 18px;
    flex-shrink: 0;
}

.feature-list.green .feature-icon {
    background: var(--green-soft);
    color: var(--green);
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 2px;
}

.feature-text strong {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.feature-text span {
    font-size: 13px;
    color: var(--text-muted);
}

/* Product CTA */
.product-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--blue);
    color: white;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s var(--ease);
}

.product-cta.green {
    background: var(--green);
}

.product-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.product-cta.green:hover {
    box-shadow: 0 8px 24px rgba(34, 197, 94, 0.3);
}

.product-cta i {
    transition: transform 0.3s var(--ease);
}

.product-cta:hover i {
    transform: translateX(4px);
}

.product-cta.disabled {
    background: var(--bg-elevated);
    color: var(--text-muted);
    cursor: default;
    pointer-events: none;
}

.product-cta.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Preview Card */
.preview-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.preview-card.dark {
    background: #0A0A0C;
    border-color: rgba(34, 197, 94, 0.15);
}

[data-theme="light"] .preview-card {
    background: #FFFFFF;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .preview-card.dark {
    background: #18181B;
}

/* Light mode - 修正白底上的元素 */
[data-theme="light"] .stat-box {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .user-row {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .signal-item {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .nav-cta:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .bento-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .lang-dropdown {
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid var(--border);
}

.dots {
    display: flex;
    gap: 6px;
}

.dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dots span:nth-child(1) { background: #ff5f57; }
.dots span:nth-child(2) { background: #febc2e; }
.dots span:nth-child(3) { background: #28c840; }

.preview-title {
    flex: 1;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.preview-body {
    padding: 24px;
}

/* Stats Row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.stat-box {
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-align: center;
}

.stat-box.accent {
    background: var(--green-soft);
    border-color: rgba(34, 197, 94, 0.2);
}

.stat-val {
    display: block;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.stat-box.accent .stat-val {
    color: var(--green);
}

.stat-lbl {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Chart Section */
.chart-section {
    margin-bottom: 24px;
}

.chart-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 80px;
}

.bar-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    height: 100%;
}

.bar-col .bar {
    width: 100%;
    height: var(--h);
    background: var(--bg-elevated);
    border-radius: 4px;
    margin-top: auto;
    transition: all 0.3s var(--ease);
}

.bar-col.highlight .bar {
    background: var(--blue);
}

.bar-col:hover .bar {
    background: var(--text-muted);
}

.bar-col.highlight:hover .bar {
    background: var(--blue);
}

.bar-col span {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Users Section */
.users-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--blue) 0%, #60A5FA 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: white;
}

.user-avatar.purple {
    background: linear-gradient(135deg, #A855F7 0%, #C084FC 100%);
}

.user-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
}

.user-volume {
    font-size: 12px;
    color: var(--text-muted);
}

.user-tag {
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--bg);
    border-radius: 6px;
    color: var(--text-muted);
}

.user-tag.vip {
    background: var(--orange-soft);
    color: var(--orange);
}

/* Signal Feed */
.signal-feed {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.signal-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s var(--ease);
}

.signal-item:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.signal-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.signal-icon.blue {
    background: var(--blue-soft);
    color: var(--blue);
}

.signal-icon.green {
    background: var(--green-soft);
    color: var(--green);
}

.signal-icon.orange {
    background: var(--orange-soft);
    color: var(--orange);
}

.signal-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.signal-pair {
    font-size: 14px;
    font-weight: 600;
}

.signal-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

.signal-badge {
    padding: 6px 12px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 6px;
    flex-shrink: 0;
}

.signal-badge.blue {
    background: var(--blue-soft);
    color: var(--blue);
}

.signal-badge.green {
    background: var(--green-soft);
    color: var(--green);
}

.signal-badge.orange {
    background: var(--orange-soft);
    color: var(--orange);
}

/* Section Label (for About) */
.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

/* ==================== ABOUT ==================== */
.about {
    padding: 120px 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 20px;
}

.about-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.stat-card {
    padding: 32px 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s var(--ease);
}

.stat-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.stat-card:nth-child(2) { transition-delay: 0.1s; }
.stat-card:nth-child(3) { transition-delay: 0.2s; }

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

.stat-num {
    display: block;
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
    background: linear-gradient(135deg, var(--blue) 0%, #60A5FA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-text {
    font-size: 14px;
    color: var(--text-muted);
}

/* ==================== CONTACT ==================== */
.contact {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.contact-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.contact-text {
    font-size: 14px;
    color: var(--text-muted);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--blue);
    text-decoration: none;
    transition: all 0.2s var(--ease);
}

.contact-link:hover {
    gap: 10px;
}

.contact-link i {
    font-size: 12px;
    transition: transform 0.2s var(--ease);
}

.contact-link:hover i {
    transform: translateX(2px);
}

/* ==================== FOOTER ==================== */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.footer-brand .logo {
    font-size: 22px;
    letter-spacing: 2px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 13px;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--text);
}

.footer-link-disabled {
    font-size: 13px;
    color: var(--text-muted);
    opacity: 0.6;
    cursor: default;
}

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

.copyright {
    font-size: 12px;
    color: var(--text-muted);
}

.footer-exchanges {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 11px;
}

.footer-exchanges-label {
    color: var(--text-muted);
    margin-right: 4px;
}

.footer-exchanges span:not(.footer-exchanges-label) {
    font-weight: 600;
}

/* ==================== RESPONSIVE ==================== */

/* 手機版專用元素 - 預設隱藏 */
.mobile-hero-stats,
.mobile-bottom-nav {
    display: none;
}

/* ==================== 平板 (1024px) ==================== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-main {
        max-width: 100%;
        text-align: left;
    }

    .hero-actions {
        justify-content: flex-start;
    }

    .hero-bento {
        max-width: 500px;
        margin: 0 auto;
    }

    .products-header {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .header-desc {
        margin-left: 0;
        max-width: 100%;
    }

    .product-wrapper,
    .product-wrapper.reverse {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .product-wrapper.reverse .product-content,
    .product-wrapper.reverse .product-preview {
        order: unset;
    }

    .product-block.alt {
        margin-left: calc(-1 * var(--gap));
        margin-right: calc(-1 * var(--gap));
        border-radius: 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: left;
    }

    .contact-bar {
        flex-direction: column;
        gap: 12px;
    }
}

/* ==================== 手機版 (768px) - 專業設計 ==================== */
/* 參考：Binance, Coinbase, Uniswap 風格 */
@media (max-width: 768px) {
    /* === 基本設定 === */
    :root {
        --gap: 16px;
    }

    .container {
        padding: 0 24px;
    }

    /* === 導航列 - Binance 風格 === */
    .nav-center,
    .nav-right {
        display: none;
    }

    .mobile-btn {
        display: flex;
    }

    .navbar {
        background: rgba(9, 9, 11, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }

    [data-theme="light"] .navbar {
        background: rgba(250, 250, 250, 0.95);
    }

    .navbar-container {
        height: 60px;
    }

    .logo {
        font-size: 26px;
    }

    /* === Hero 區塊 - Coinbase 大字體風格 === */
    .hero {
        padding-top: 80px;
        padding-bottom: 48px;
        min-height: auto;
    }

    .hero::before,
    .hero::after {
        display: none; /* 手機版移除光暈效果，更乾淨 */
    }

    .hero-grid {
        gap: 0;
    }

    .hero-main {
        text-align: left;
    }

    /* 標籤 - 小巧低調 */
    .hero-label {
        font-size: 12px;
        font-weight: 500;
        letter-spacing: 0;
        line-height: 1.4;
        text-transform: none;
        margin-bottom: 20px;
        color: var(--text-muted);
        display: block;
    }

    /* 標題 - Coinbase 風格大字體 */
    .hero-title {
        font-size: 36px;
        font-weight: 700;
        line-height: 1.15;
        margin-bottom: 20px;
        letter-spacing: -0.02em;
    }

    .hero-title br {
        display: none;
    }

    /* 描述 */
    .hero-desc {
        font-size: 16px;
        margin-bottom: 32px;
        line-height: 1.6;
        color: var(--text-secondary);
    }

    /* 按鈕 - Uniswap 風格 */
    .hero-actions {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 40px;
    }

    .hero-actions .btn-primary {
        width: 100%;
        justify-content: center;
        padding: 18px 24px;
        font-size: 16px;
        font-weight: 600;
        border-radius: 16px;
        min-height: 56px;
        background: var(--blue);
        border: none;
    }

    .hero-actions .btn-ghost {
        width: 100%;
        justify-content: center;
        padding: 18px 24px;
        font-size: 16px;
        font-weight: 600;
        border-radius: 16px;
        min-height: 56px;
        background: var(--bg-elevated);
        border: 1px solid var(--border);
    }

    /* === 手機版 Hero 統計 - Binance 風格 === */
    .mobile-hero-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .mobile-stat-item {
        padding: 20px 16px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: 16px;
        text-align: center;
    }

    .mobile-stat-num {
        display: block;
        font-size: 24px;
        font-weight: 700;
        background: linear-gradient(135deg, var(--blue) 0%, #60A5FA 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 6px;
    }

    .mobile-stat-label {
        font-size: 12px;
        color: var(--text-muted);
        font-weight: 500;
    }

    /* 隱藏桌面版 Bento 卡片 */
    .hero-bento {
        display: none;
    }

    /* === 產品區塊 - 簡潔卡片設計 === */
    .products {
        padding: 48px 0 64px;
    }

    .products-header {
        margin-bottom: 32px;
        padding-bottom: 0;
        border-bottom: none;
        text-align: left;
    }

    .section-eyebrow {
        font-size: 13px;
        margin-bottom: 12px;
    }

    .section-eyebrow::before {
        display: none;
    }

    .products-title {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.2;
        letter-spacing: -0.02em;
    }

    .products-title br {
        display: none;
    }

    .header-desc {
        font-size: 15px;
        text-align: left;
        margin-top: 12px;
        line-height: 1.6;
        color: var(--text-secondary);
    }

    /* 產品卡片 - 極簡風格 */
    .product-block {
        margin-bottom: 16px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: 20px;
        padding: 24px;
    }

    .product-block.alt {
        margin-left: 0;
        margin-right: 0;
        padding: 24px;
        border-radius: 20px;
        background: var(--bg-card);
        border: 1px solid var(--border);
    }

    .product-wrapper {
        gap: 0;
    }

    .product-meta {
        justify-content: flex-start;
        margin-bottom: 16px;
        gap: 12px;
    }

    .product-num {
        font-size: 13px;
        font-weight: 600;
        color: var(--text-muted);
    }

    .product-tag {
        font-size: 11px;
        font-weight: 600;
        padding: 5px 12px;
        border-radius: 8px;
    }

    .product-content {
        text-align: left;
    }

    .product-name {
        font-size: 22px;
        font-weight: 700;
        margin-bottom: 12px;
        letter-spacing: -0.01em;
    }

    .product-desc {
        font-size: 15px;
        line-height: 1.6;
        margin-bottom: 24px;
        color: var(--text-secondary);
    }

    /* 功能列表 - 簡潔清單 */
    .feature-list {
        gap: 0;
        margin-bottom: 24px;
        background: var(--bg);
        border-radius: 12px;
        border: 1px solid var(--border);
        overflow: hidden;
    }

    .feature-item {
        gap: 14px;
        padding: 16px;
        background: transparent;
        border-radius: 0;
        border: none;
        border-bottom: 1px solid var(--border);
    }

    .feature-item:last-child {
        border-bottom: none;
    }

    .feature-icon {
        width: 44px;
        height: 44px;
        font-size: 18px;
        border-radius: 12px;
        flex-shrink: 0;
    }

    .feature-text {
        flex: 1;
    }

    .feature-text strong {
        font-size: 15px;
        font-weight: 600;
        display: block;
        margin-bottom: 4px;
    }

    .feature-text span {
        font-size: 13px;
        line-height: 1.4;
        color: var(--text-muted);
    }

    /* CTA 按鈕 */
    .product-cta {
        width: 100%;
        justify-content: center;
        padding: 16px 24px;
        border-radius: 14px;
        font-size: 15px;
        font-weight: 600;
        min-height: 54px;
    }

    /* 隱藏產品預覽卡片 */
    .product-preview {
        display: none;
    }

    /* === 關於區塊 === */
    .about {
        padding: 48px 0;
    }

    .about-grid {
        text-align: left;
        gap: 32px;
    }

    .about-content {
        text-align: left;
    }

    .section-label {
        display: block;
        font-size: 13px;
        margin-bottom: 12px;
    }

    .about-title {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 16px;
        letter-spacing: -0.02em;
    }

    .about-title br {
        display: none;
    }

    .about-text {
        font-size: 15px;
        line-height: 1.7;
        color: var(--text-secondary);
    }

    /* 統計卡片 - Binance 風格 */
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .stat-card {
        padding: 24px 12px;
        border-radius: 16px;
        background: var(--bg);
    }

    .stat-num {
        font-size: 26px;
        font-weight: 700;
        margin-bottom: 6px;
    }

    .stat-text {
        font-size: 12px;
        font-weight: 500;
    }

    /* === 聯繫區塊 === */
    .contact {
        padding: 32px 0;
    }

    .contact-bar {
        flex-direction: column;
        gap: 20px;
        text-align: center;
        padding: 28px 24px;
        background: linear-gradient(135deg, var(--blue-soft) 0%, transparent 100%);
        border-radius: 20px;
        border: 1px solid var(--border);
    }

    .contact-text {
        font-size: 15px;
        font-weight: 500;
    }

    .contact-link {
        font-size: 15px;
        font-weight: 600;
        padding: 16px 32px;
        background: var(--blue);
        color: white;
        border-radius: 14px;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }

    .contact-link:hover {
        gap: 8px;
    }

    /* === 頁尾 === */
    .footer {
        padding: 40px 0 100px;
    }

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

    .footer-brand .logo {
        font-size: 28px;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px 24px;
    }

    .footer-links a,
    .footer-link-disabled {
        font-size: 14px;
        font-weight: 500;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
        margin-top: 32px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }

    .copyright {
        font-size: 13px;
        color: var(--text-muted);
    }

    .footer-exchanges {
        display: none;
    }

    /* === 底部導航列 - iOS 風格 === */
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 64px;
        background: rgba(24, 24, 27, 0.98);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 9999;
        padding: 6px 8px;
        padding-bottom: max(6px, env(safe-area-inset-bottom));
    }

    [data-theme="light"] .mobile-bottom-nav,
    .light-mode .mobile-bottom-nav {
        background: rgba(255, 255, 255, 0.98);
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }

    .mobile-nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        text-decoration: none;
        color: #71717A;
        font-size: 11px;
        font-weight: 500;
        transition: all 0.2s ease;
        border-radius: 12px;
        padding: 8px 4px;
    }

    .mobile-nav-item i {
        font-size: 22px;
        transition: all 0.2s ease;
    }

    .mobile-nav-item.active {
        color: #3B82F6;
    }

    .mobile-nav-item.active i {
        transform: scale(1.1);
    }

    .mobile-nav-item:active {
        background: rgba(255, 255, 255, 0.05);
    }

    .light-mode .mobile-nav-item {
        color: #737373;
    }

    .light-mode .mobile-nav-item.active {
        color: #3B82F6;
    }

    .light-mode .mobile-nav-item:active {
        background: rgba(0, 0, 0, 0.05);
    }

    /* === 手機選單 - 全屏風格 === */
    .mobile-menu {
        padding-top: 80px;
        padding-bottom: 100px;
        background: var(--bg);
    }

    .mobile-menu a {
        padding: 20px 24px;
        font-size: 18px;
        font-weight: 600;
        border-bottom: 1px solid var(--border);
    }

    .mobile-menu a:last-child {
        border-bottom: none;
    }

    .mobile-options {
        padding: 20px 24px;
        border-top: 1px solid var(--border);
    }

    .mobile-lang {
        padding: 16px 24px;
    }

    .mobile-lang a {
        padding: 12px 16px;
        font-size: 15px;
        border-radius: 10px;
    }
}

/* ==================== 小螢幕手機 (480px) ==================== */
@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-label {
        font-size: 11px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .mobile-hero-stats {
        gap: 10px;
    }

    .mobile-stat-item {
        padding: 16px 12px;
    }

    .mobile-stat-num {
        font-size: 22px;
    }

    .mobile-stat-label {
        font-size: 11px;
    }

    .products-title,
    .about-title {
        font-size: 26px;
    }

    .product-block {
        padding: 20px;
        border-radius: 16px;
    }

    .product-name {
        font-size: 20px;
    }

    .product-desc {
        font-size: 14px;
    }

    .feature-item {
        padding: 14px;
    }

    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .feature-text strong {
        font-size: 14px;
    }

    .feature-text span {
        font-size: 12px;
    }

    .stat-card {
        padding: 20px 10px;
    }

    .stat-num {
        font-size: 24px;
    }

    .stat-text {
        font-size: 11px;
    }

    .footer-links {
        gap: 12px 20px;
    }

    .footer-links a,
    .footer-link-disabled {
        font-size: 13px;
    }
}

/* ==================== 超小螢幕 (360px) ==================== */
@media (max-width: 360px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-desc {
        font-size: 14px;
    }

    .mobile-stat-item {
        padding: 14px 8px;
    }

    .mobile-stat-num {
        font-size: 20px;
    }

    .products-title,
    .about-title {
        font-size: 24px;
    }

    .product-name {
        font-size: 18px;
    }

    .stat-num {
        font-size: 22px;
    }

    .mobile-bottom-nav {
        height: 60px;
    }

    .mobile-nav-item i {
        font-size: 20px;
    }

    .mobile-nav-item {
        font-size: 10px;
    }
}

/* ==================== ANIMATIONS ==================== */

/* Keyframes */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Hero Animations */
.hero-main > * {
    animation: fadeUp 0.8s var(--ease) forwards;
    opacity: 0;
}

.hero-label { animation-delay: 0s; }
.hero-title { animation-delay: 0.1s; }
.hero-desc { animation-delay: 0.2s; }
.hero-actions { animation-delay: 0.3s; }
.mobile-hero-stats { animation-delay: 0.4s; }

.hero-bento {
    animation: fadeIn 1s var(--ease) 0.4s forwards;
    opacity: 0;
}

.bento-card:nth-child(1) { transition-delay: 0.5s; }
.bento-card:nth-child(2) { transition-delay: 0.6s; }
.bento-card:nth-child(3) { transition-delay: 0.7s; }

/* Scroll Animation Base */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Items */
.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Product Block Animation */
.product-block {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.9s var(--ease);
}

.product-block.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-block .preview-card {
    opacity: 0;
    transform: translateY(30px) scale(0.97);
    transition: all 0.8s var(--ease) 0.3s;
}

.product-block.visible .preview-card {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Stat Card Animation */
.stat-card {
    transition: all 0.7s var(--ease);
}

.stat-card:nth-child(1) { transition-delay: 0s; }
.stat-card:nth-child(2) { transition-delay: 0.1s; }
.stat-card:nth-child(3) { transition-delay: 0.2s; }

/* Feature Item Animation */
.feature-item {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s var(--ease);
}

.product-block.visible .feature-item {
    opacity: 1;
    transform: translateX(0);
}

.product-block.visible .feature-item:nth-child(1) { transition-delay: 0.1s; }
.product-block.visible .feature-item:nth-child(2) { transition-delay: 0.2s; }
.product-block.visible .feature-item:nth-child(3) { transition-delay: 0.3s; }
.product-block.visible .feature-item:nth-child(4) { transition-delay: 0.4s; }

/* Preview Card Hover */
.preview-card {
    transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.preview-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .preview-card:hover {
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.12);
}

/* Bento Card Hover Enhancement */
.bento-card {
    transition: transform 0.15s ease-out, border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
    transform-style: preserve-3d;
    will-change: transform;
}

.bento-card:hover {
    border-color: var(--border-hover);
}

/* Preview Card Tilt Support */
.preview-card {
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform 0.15s ease-out, box-shadow 0.3s var(--ease);
}

/* Button Hover Effects */
.btn-primary,
.btn-ghost {
    position: relative;
    overflow: hidden;
}

.btn-primary::after,
.btn-ghost::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s var(--ease), height 0.6s var(--ease);
}

.btn-primary:hover::after,
.btn-ghost:hover::after {
    width: 300px;
    height: 300px;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}