/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(26, 26, 37, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --gold-primary: #d4af37;
    --gold-light: #f4d03f;
    --gold-dark: #b8860b;
    --gold-gradient: linear-gradient(135deg, #f4d03f 0%, #d4af37 50%, #b8860b 100%);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --success: #00d26a;
    --danger: #ff4757;
    --border-color: rgba(212, 175, 55, 0.15);
    --border-light: rgba(255, 255, 255, 0.08);
    --font-primary: 'Inter', 'Noto Sans TC', sans-serif;
    --section-padding: 100px 0;
    --container-width: 1200px;
    --shadow-gold: 0 0 30px rgba(212, 175, 55, 0.2);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.3);
    --glass-blur: blur(20px);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

ul {
    list-style: none;
}

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

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: var(--glass-blur);
    padding: 14px 0;
    border-bottom: 1px solid var(--border-light);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-logo i {
    color: var(--gold-primary);
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-gradient);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1.5rem;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 100px 24px 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(212, 175, 55, 0.08) 0%, transparent 50%), radial-gradient(circle at 70% 70%, rgba(184, 134, 11, 0.05) 0%, transparent 50%);
    animation: bgPulse 10s ease-in-out infinite;
}

@keyframes bgPulse {

    0%,
    100% {
        transform: scale(1) rotate(0deg);
    }

    50% {
        transform: scale(1.1) rotate(5deg);
    }
}

.gold-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--gold-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite;
}

.gold-particle:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.gold-particle:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: -3s;
}

.gold-particle:nth-child(3) {
    top: 30%;
    left: 70%;
    animation-delay: -6s;
}

.gold-particle:nth-child(4) {
    top: 80%;
    left: 20%;
    animation-delay: -9s;
}

.gold-particle:nth-child(5) {
    top: 50%;
    left: 50%;
    animation-delay: -12s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }

    25% {
        transform: translateY(-30px) translateX(20px);
        opacity: 0.6;
    }

    50% {
        transform: translateY(-10px) translateX(-20px);
        opacity: 0.3;
    }

    75% {
        transform: translateY(-40px) translateX(10px);
        opacity: 0.5;
    }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--gold-primary);
    margin-bottom: 30px;
    backdrop-filter: var(--glass-blur);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gold-gradient);
    color: #000;
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(212, 175, 55, 0.4);
}

.btn-secondary {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    background: rgba(212, 175, 55, 0.1);
    border-color: var(--gold-primary);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gold-primary);
}

.stat-unit {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gold-light);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--gold-primary);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* About Section */
.about {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.intro-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.exchange-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 24px;
    backdrop-filter: var(--glass-blur);
    transition: var(--transition);
}

.exchange-card:hover {
    border-color: var(--border-color);
    transform: translateY(-5px);
}

.exchange-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.exchange-header i {
    color: var(--gold-primary);
}

.exchange-price .label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.exchange-price .price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success);
}

.exchange-b .exchange-price .price {
    color: var(--gold-primary);
}

.arbitrage-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.arrow-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, transparent, var(--gold-primary), transparent);
}

.profit-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--gold-primary);
    font-size: 0.75rem;
}

.profit-badge i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.intro-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--gold-primary);
}

.intro-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 32px 24px;
    text-align: center;
    backdrop-filter: var(--glass-blur);
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--border-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-card);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 16px;
    font-size: 1.5rem;
    color: var(--gold-primary);
}

.feature-card h4 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.arbitrage-types {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 24px;
    padding: 48px;
    backdrop-filter: var(--glass-blur);
}

.types-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 1.5rem;
    margin-bottom: 40px;
}

.types-title i {
    color: var(--gold-primary);
}

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

.type-card {
    text-align: center;
    padding: 24px;
}

.type-number {
    font-size: 3rem;
    font-weight: 700;
    color: rgba(212, 175, 55, 0.2);
    margin-bottom: 16px;
}

.type-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--gold-primary);
}

.type-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Tool Section */
.tool {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.tool-demo {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 60px;
}

.tool-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-light);
}

.tool-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    font-weight: 600;
}

.tool-title i {
    color: var(--gold-primary);
}

.tool-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--success);
}

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.tool-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1px;
    background: var(--border-light);
}

.tool-content.tool-content-2col {
    grid-template-columns: 1fr 1fr;
}

.tool-content.tool-content-3col {
    grid-template-columns: 1fr 1fr 1fr;
}

.quotes-panel,
.opportunities-panel,
.funding-panel,
.funding-arb-panel {
    background: var(--bg-secondary);
    padding: 24px;
}

.funding-panel {
    border-left: 1px solid var(--border-light);
}

.funding-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: rgba(212, 175, 55, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

/* 套利區塊 */
.arbitrage-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
}

.arb-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border-light);
}

.arb-row>div {
    background: var(--bg-secondary);
    padding: 24px;
}

/* 資金費率套利區塊 */
.funding-arb-section {
    background: var(--bg-secondary);
    padding: 24px;
    border-top: 1px solid var(--border-light);
}

.funding-arb-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.funding-arb-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 16px;
    transition: var(--transition);
}

.funding-arb-item:hover {
    border-color: var(--border-color);
    transform: translateY(-2px);
}

.funding-arb-item.profitable {
    border-color: var(--success);
    background: rgba(0, 210, 106, 0.05);
}

.funding-arb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.funding-arb-pair {
    font-weight: 600;
    color: var(--text-primary);
}

.funding-arb-profit {
    font-weight: 700;
    color: var(--success);
    font-size: 1.1rem;
}

.funding-arb-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.funding-arb-details .label {
    color: var(--text-muted);
}

.funding-arb-details .long-rate {
    color: var(--danger);
}

.funding-arb-details .short-rate {
    color: var(--success);
}

.funding-arb-strategy {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
    font-size: 0.85rem;
    color: var(--gold-primary);
}

.funding-arb-strategy i {
    margin-right: 6px;
}

/* 資金費率表格 */
.funding-table {
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
}

.table-header-Funding {
    grid-template-columns: 1.2fr 1fr 0.6fr 1fr 0.8fr !important;
}

.table-row-funding {
    grid-template-columns: 1.2fr 1fr 0.6fr 1fr 0.8fr !important;
}

.interval-tag {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    text-align: center;
    width: fit-content;
}

.table-header-5col {
    grid-template-columns: 1.5fr 1fr 1fr 0.8fr 0.8fr !important;
}

.table-row-4col {
    grid-template-columns: 1.2fr 1fr 1fr 0.8fr !important;
}

.table-row-5col {
    grid-template-columns: 1.5fr 1fr 1fr 0.8fr 0.8fr !important;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.panel-header h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
}

.panel-header h4 i {
    color: var(--gold-primary);
}

.update-time,
.opportunity-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.opportunity-count span {
    color: var(--gold-primary);
    font-weight: 600;
}

.quotes-table {
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
}

.table-header {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 0.7fr 0.9fr 0.9fr 0.7fr;
    padding: 14px 18px;
    background: rgba(212, 175, 55, 0.05);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.table-row {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 0.7fr 0.9fr 0.9fr 0.7fr;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.9rem;
    transition: var(--transition);
    align-items: center;
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:hover {
    background: rgba(212, 175, 55, 0.03);
}

.table-row .exchange {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.table-row .exchange-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--gold-primary);
}

.table-row .spread {
    color: var(--gold-primary);
    font-weight: 600;
}

.table-row .funding-rate {
    font-weight: 600;
    font-size: 0.85rem;
}

.table-row .funding-rate.funding-positive {
    color: var(--danger);
}

.table-row .funding-rate.funding-negative {
    color: var(--success);
}

.table-row .countdown {
    font-family: 'Inter', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(212, 175, 55, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
}

.table-row .change.up {
    color: var(--success);
}

.table-row .change.down {
    color: var(--danger);
}

.opportunities-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 280px;
    overflow-y: auto;
}

.opportunity-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 16px;
    transition: var(--transition);
}

.opportunity-item:hover {
    border-color: var(--success);
}

.opportunity-item.high {
    border-color: var(--success);
    background: rgba(0, 210, 106, 0.05);
}

.opp-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.opp-pair {
    font-weight: 600;
    font-size: 0.9rem;
}

.opp-profit {
    color: var(--success);
    font-weight: 700;
}

.opp-details {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.opp-strategy {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border-light);
    font-size: 0.85rem;
    color: var(--gold-primary);
}

.opp-strategy i {
    margin-right: 6px;
}

.chart-panel {
    padding: 24px;
    border-top: 1px solid var(--border-light);
}

.chart-controls {
    display: flex;
    gap: 8px;
}

.chart-btn {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    transition: var(--transition);
}

.chart-btn:hover,
.chart-btn.active {
    background: rgba(212, 175, 55, 0.1);
    border-color: var(--border-color);
    color: var(--gold-primary);
}

.chart-container {
    height: 200px;
    margin-top: 20px;
}

.tool-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 16px 28px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-light);
}

.metric {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.metric i {
    color: var(--gold-primary);
}

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

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

.tool-feature {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    transition: var(--transition);
}

.tool-feature:hover {
    border-color: var(--border-color);
    transform: translateY(-5px);
}

.tool-feature i {
    font-size: 2rem;
    color: var(--gold-primary);
    margin-bottom: 20px;
}

.tool-feature h4 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.tool-feature p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* FAQ Section */
.faq {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.faq-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    grid-template-rows: auto auto;
    gap: 24px 40px;
    align-items: start;
}

.faq-container .quick-questions:first-of-type {
    grid-column: 1;
    grid-row: 1;
}

.faq-container .api-questions {
    grid-column: 1;
    grid-row: 2;
}

.faq-container .chat-window {
    grid-column: 2;
    grid-row: 1 / 3;
}

.quick-questions h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.question-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.chip {
    padding: 12px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.chip:hover {
    background: rgba(212, 175, 55, 0.1);
    border-color: var(--border-color);
    color: var(--gold-primary);
}

.chat-window {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
}

.chat-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gold-gradient);
    border-radius: 12px;
    font-size: 1.3rem;
    color: #000;
}

.chat-name {
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--success);
}

.online-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
}

.chat-messages {
    height: 360px;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    gap: 12px;
    max-width: 85%;
}

.message.bot {
    align-self: flex-start;
}

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    flex-shrink: 0;
}

.message.bot .message-avatar {
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold-primary);
}

.message.user .message-avatar {
    background: var(--gold-gradient);
    color: #000;
}

.message-content {
    padding: 14px 18px;
    border-radius: 16px;
}

.message.bot .message-content {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-top-left-radius: 4px;
}

.message.user .message-content {
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--border-color);
    border-top-right-radius: 4px;
}

.message-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.message-content p+p {
    margin-top: 10px;
}

.message.user .message-content p {
    color: var(--text-primary);
}

.chat-input {
    display: flex;
    gap: 12px;
    padding: 20px 24px;
    background: var(--bg-card);
    border-top: 1px solid var(--border-light);
}

.chat-input input {
    flex: 1;
    padding: 14px 18px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.chat-input input::placeholder {
    color: var(--text-muted);
}

.chat-input input:focus {
    outline: none;
    border-color: var(--border-color);
}

.send-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gold-gradient);
    border-radius: 12px;
    color: #000;
    font-size: 1rem;
    transition: var(--transition);
}

.send-btn:hover {
    transform: scale(1.05);
}

/* Footer */
.footer {
    background: var(--bg-tertiary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo i {
    color: var(--gold-primary);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-links h5,
.footer-contact h5 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--gold-primary);
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 12px;
    transition: var(--transition);
}

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

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.footer-contact i {
    color: var(--gold-primary);
    width: 18px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-light);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.disclaimer {
    margin-top: 10px;
    font-size: 0.8rem !important;
}

/* Responsive */
@media (max-width: 992px) {
    .about-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .intro-visual {
        order: -1;
    }

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

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

    .tool-content {
        grid-template-columns: 1fr;
    }

    .tool-features {
        grid-template-columns: 1fr;
    }

    .faq-container {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        transition: var(--transition);
        border-left: 1px solid var(--border-light);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: block;
        z-index: 1001;
    }

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

    .hero {
        padding-bottom: 80px;
        /* 預留空間給滾動按鈕 */
        box-sizing: border-box;
    }

    .hero-content {
        text-align: center;
        padding-top: 80px;
        /* 增加頂部間距 */
        width: 100%;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-title {
        text-align: center;
        width: 100%;
    }

    .hero-subtitle {
        text-align: center;
        width: 100%;
    }

    .hero-badge {
        margin: 0 auto 16px;
        display: inline-flex;
        /* 確保徽章置中時的行為正確 */
    }

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

    .hero-stats {
        justify-content: center;
        gap: 20px;
        margin-top: 40px;
        flex-wrap: wrap;
        width: 100%;
        /* 防止太窄時破版 */
    }

    .scroll-indicator {
        bottom: 20px;
        /* 下移避免重疊 */
    }

    /* === 全域置中修復 === */
    .container {
        width: 100%;
        padding: 0 16px;
        box-sizing: border-box;
    }

    /* Section Header 完全置中 */
    .section-header {
        text-align: center;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .section-tag {
        margin-left: auto;
        margin-right: auto;
    }

    .section-title {
        text-align: center;
        width: 100%;
    }

    .section-desc {
        text-align: center;
        width: 100%;
    }

    /* About Section 置中 */
    .about-intro {
        text-align: center;
    }

    .intro-visual {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        width: 100%;
    }

    .intro-text {
        text-align: center;
        width: 100%;
    }

    .intro-text h3 {
        text-align: center;
        justify-content: center;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .intro-text p {
        text-align: center;
    }

    /* Feature Cards 置中 */
    .feature-card {
        text-align: center;
        margin: 0 auto;
        width: 100%;
    }

    .feature-icon {
        margin: 0 auto 20px;
    }

    .feature-card h4 {
        text-align: center;
    }

    .feature-card p {
        text-align: center;
    }

    /* Arbitrage Types 置中 */
    .arbitrage-types {
        padding: 32px 20px;
    }

    .types-title {
        text-align: center;
        justify-content: center;
    }

    .types-grid {
        width: 100%;
    }

    .type-card {
        text-align: center;
        width: 100%;
    }

    .type-card h4 {
        text-align: center;
    }

    .type-card p {
        text-align: center;
    }

    /* 強制單欄佈局 & 修復溢出 */
    .tool-content,
    .tool-content.tool-content-2col,
    .arb-row {
        grid-template-columns: 1fr !important;
        gap: 24px;
    }

    /* Panel Headers 置中 */
    .panel-header {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        text-align: center;
    }

    .panel-header h4 {
        width: 100%;
        text-align: center;
    }

    /* 手機版表格 - 完整放入螢幕，不需滾動 */
    .quotes-panel,
    .funding-panel {
        padding: 12px 8px;
        overflow: hidden;
    }

    .quotes-table,
    .funding-table {
        overflow: hidden;
    }

    /* 黃金期貨報價表格 - 4 欄緊湊佈局 (隱藏變動欄) */
    .table-header,
    .table-row {
        min-width: unset !important;
        width: 100%;
        grid-template-columns: 1.4fr 1fr 1fr 0.6fr !important;
        font-size: 0.72rem;
        padding: 8px 6px;
        gap: 2px;
    }

    /* 隱藏變動欄位 */
    .table-header span:nth-child(5),
    .table-row .change {
        display: none !important;
    }

    .table-header-5col {
        grid-template-columns: 1.4fr 1fr 1fr 0.6fr !important;
    }

    .table-row-5col {
        grid-template-columns: 1.4fr 1fr 1fr 0.6fr !important;
    }

    /* 資金費率表格 - 4 欄緊湊佈局 (隱藏年化欄) */
    .table-header-Funding,
    .table-row-funding {
        min-width: unset !important;
        width: 100%;
        grid-template-columns: 1.3fr 1fr 0.5fr 1fr !important;
        font-size: 0.72rem;
        padding: 8px 6px;
        gap: 2px;
    }

    /* 隱藏年化欄位 */
    .table-header-Funding span:nth-child(5),
    .table-row-funding .annualized {
        display: none !important;
    }

    /* 縮小表格內元素 */
    .table-row .exchange {
        gap: 4px;
        font-size: 0.72rem;
    }

    .table-row .exchange-icon {
        width: 20px;
        height: 20px;
        font-size: 0.6rem;
    }

    .table-row .spread {
        font-size: 0.72rem;
    }

    .table-row .countdown {
        font-size: 0.65rem;
        padding: 2px 4px;
    }

    .interval-tag {
        font-size: 0.6rem;
        padding: 2px 3px;
    }

    /* Panel Header 手機版調整 */
    .panel-header {
        flex-direction: column;
        gap: 6px;
        text-align: center;
        margin-bottom: 10px;
    }

    .panel-header h4 {
        justify-content: center;
        font-size: 0.85rem;
        width: 100%;
    }

    .update-time {
        font-size: 0.7rem;
    }

    .stat-value {
        font-size: 2rem;
    }

    .stat-item {
        text-align: center;
    }

    .about-intro,
    .about-text {
        text-align: center;
    }

    .about-text h3 {
        justify-content: center;
        /* 讓標題 Flex 內容置中 */
        display: flex;
        align-items: center;
        gap: 10px;
    }

    /* FAQ 區塊置中 - 手機版佈局調整 */
    .faq-container {
        display: flex;
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }

    .quick-questions {
        order: -1;
        /* 常見問題放在上方 */
        text-align: center;
        width: 100%;
    }

    .quick-questions h4 {
        text-align: center;
    }

    .question-chips {
        justify-content: center;
    }

    .chat-window {
        width: 100%;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
    }

    /* 確保對話框內容區延展 */
    .chat-messages {
        flex: 1;
        min-height: 350px;
    }

    /* 確保發送按鈕在手機版顯示 */
    .chat-input {
        display: flex !important;
    }

    .send-btn {
        display: flex !important;
    }

    .faq-item {
        text-align: left;
        /* FAQ 展開內容保留靠左比較好閱讀，標題可置中 */
    }

    /* Tool Features 置中 */
    .tool-features {
        text-align: center;
    }

    .tool-feature {
        text-align: center;
        width: 100%;
    }

    .tool-feature h4 {
        text-align: center;
    }

    .tool-feature p {
        text-align: center;
    }

    .tool-footer {
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
        text-align: center;
    }

    .tool-footer .metric {
        text-align: center;
    }

    /* 手機版常見問題快選放到上面 */
    .chat-container {
        flex-direction: column-reverse;
        /* 反轉順序，讓右邊的快選區塊跑到上面 */
        gap: 20px;
        height: auto;
        /* 高度自動適應 */
        background: transparent;
        /* 移除容器背景，讓子元素各自有背景 */
        border: none;
    }

    .faq-quick-select {
        flex-direction: row;
        /* 水平排列 */
        flex-wrap: wrap;
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        padding-bottom: 20px;
        background: var(--bg-secondary);
        /* 給快選區塊背景 */
        padding: 20px;
        border-radius: 16px;
        justify-content: center;
    }

    .chat-interface {
        height: 500px;
        background: var(--bg-secondary);
        /* 給聊天框背景 */
        border-radius: 16px;
        border: 1px solid var(--border-light);
        width: 100%;
    }

    /* Footer 置中 */
    .footer-content {
        text-align: center;
    }

    .footer-brand {
        text-align: center;
        align-items: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-links {
        text-align: center;
    }

    .footer-contact {
        text-align: center;
    }

    .footer-contact p {
        justify-content: center;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* ===== Encyclopedia Section (AEO SEO) ===== */
.encyclopedia {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.encyclopedia-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.encyclopedia-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 32px;
    backdrop-filter: var(--glass-blur);
    transition: var(--transition);
}

.encyclopedia-item:hover {
    border-color: var(--border-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-card);
}

.encyclopedia-question {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.4;
}

.encyclopedia-question i {
    color: var(--gold-primary);
    font-size: 1.3rem;
    margin-top: 4px;
    flex-shrink: 0;
}

.encyclopedia-answer {
    color: var(--text-secondary);
}

.answer-summary {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}

.answer-details {
    font-size: 0.95rem;
}

.answer-details h4 {
    color: var(--gold-primary);
    font-size: 1rem;
    margin-bottom: 12px;
}

.answer-details ol,
.answer-details ul {
    padding-left: 20px;
    margin-bottom: 16px;
}

.answer-details li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.answer-details strong {
    color: var(--text-primary);
}

.answer-details p {
    margin-bottom: 12px;
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

.comparison-table th,
.comparison-table td {
    padding: 12px;
    text-align: center;
    border: 1px solid var(--border-light);
}

.comparison-table th {
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold-primary);
    font-weight: 600;
}

.comparison-table td {
    color: var(--text-secondary);
}

/* Encyclopedia Responsive */
@media (max-width: 992px) {
    .encyclopedia-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .encyclopedia-item {
        padding: 24px;
    }

    .encyclopedia-question {
        font-size: 1.1rem;
    }

    .answer-summary {
        font-size: 1rem;
    }
}