:root {
    --bg: #0B0E11;
    --bg-section: #181A20;
    --bg-card: #1E2329;
    --primary: #F0B90B;
    --primary-hover: #F8D33A;
    --text: #EAECEF;
    --text-secondary: #848E9C;
    --border: #2B3139;
    --up: #0ECB81;
    --down: #F6465D;
    --radius: 12px;
    --gap: 80px;
    --max-width: 1180px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: #000;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

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

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

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
}

/* Section titles */
.section-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    color: var(--text);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 14, 17, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}

.header.scrolled {
    background: rgba(11, 14, 17, 0.95);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.main-nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.2s;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s;
    border-radius: 1px;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-section);
    z-index: 999;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    overflow-y: auto;
}

.mobile-menu.open {
    display: flex;
}

.mobile-nav-link {
    font-size: 18px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.mobile-actions .btn {
    width: 100%;
}

/* Hero */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg) 0%, #12161c 100%);
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.trust-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
}

.trust-tag::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

/* Trust Bar */
.trust-bar {
    padding: var(--gap) 0;
    background: var(--bg-section);
}

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

.trust-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: border-color 0.3s;
}

.trust-item:hover {
    border-color: var(--primary);
}

.trust-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--primary);
}

.trust-icon svg {
    width: 100%;
    height: 100%;
}

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

/* Market Section */
.market-section {
    padding: var(--gap) 0;
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.market-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.3s;
}

.market-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(240, 185, 11, 0.08);
}

.market-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.market-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: #fff;
}

.btc-icon { background: #F7931A; }
.eth-icon { background: #627EEA; }
.bnb-icon { background: #F3BA2F; color: #000; }
.sol-icon { background: #14F195; color: #000; }
.xrp-icon { background: #23292F; border: 1px solid var(--border); }
.doge-icon { background: #C2A633; color: #000; }

.market-name {
    font-weight: 600;
    font-size: 15px;
}

.market-name span {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 13px;
}

.market-price {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 6px;
}

.market-change {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.market-change.up { color: var(--up); }
.market-change.down { color: var(--down); }

.market-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
}

.market-link:hover {
    text-decoration: underline;
}

/* Offer Section */
.offer-section {
    padding: var(--gap) 0;
    background: var(--bg-section);
}

.offer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.offer-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
}

.offer-label {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.offer-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    word-break: break-all;
}

.offer-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.offer-disclaimer {
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Why Section */
.why-section {
    padding: var(--gap) 0;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.why-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.3s;
}

.why-card:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(240, 185, 11, 0.1);
}

.why-icon {
    width: 44px;
    height: 44px;
    color: var(--primary);
    margin-bottom: 20px;
}

.why-icon svg {
    width: 100%;
    height: 100%;
}

.why-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.why-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Steps Section */
.steps-section {
    padding: var(--gap) 0;
    background: var(--bg-section);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: #000;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.step-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

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

.steps-cta {
    text-align: center;
}

/* App Section */
.app-section {
    padding: var(--gap) 0;
}

.app-inner {
    display: flex;
    align-items: center;
    gap: 64px;
}

.app-mockup {
    flex: 0 0 280px;
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: 260px;
    height: 520px;
    background: var(--bg-card);
    border: 3px solid var(--border);
    border-radius: 32px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-section);
    border-radius: 22px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.phone-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.phone-logo {
    font-weight: 700;
    font-size: 18px;
    color: var(--primary);
}

.phone-balance {
    padding: 24px 20px;
    text-align: center;
}

.phone-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.phone-amount {
    font-size: 28px;
    font-weight: 700;
}

.phone-actions {
    display: flex;
    gap: 12px;
    padding: 0 20px 20px;
}

.phone-btn {
    flex: 1;
    padding: 10px;
    background: var(--primary);
    color: #000;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    text-align: center;
}

.phone-list {
    flex: 1;
    padding: 0 20px;
}

.phone-item {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.phone-item .up { color: var(--up); }
.phone-item .down { color: var(--down); }

.app-content {
    flex: 1;
}

.app-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
}

.app-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.app-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Guide Section */
.guide-section {
    padding: var(--gap) 0;
    background: var(--bg-section);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

a.guide-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
}

a.guide-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.guide-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
}

.guide-card > p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.guide-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.guide-meta span {
    color: var(--text-secondary);
}

.guide-link {
    color: var(--primary);
    font-weight: 600;
}

.guide-meta a {
    color: var(--primary);
    font-weight: 600;
}

.guide-meta a:hover {
    text-decoration: underline;
}

/* Security Section */
.security-section {
    padding: var(--gap) 0;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.security-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all 0.3s;
}

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

.security-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
    margin-bottom: 16px;
}

.security-icon svg {
    width: 100%;
    height: 100%;
}

.security-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.security-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.security-cta {
    text-align: center;
}

/* Fee Section */
.fee-section {
    padding: var(--gap) 0;
    background: var(--bg-section);
}

.fee-content {
    max-width: 720px;
    margin: 0 auto;
}

.fee-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 32px;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
}

.fee-table th,
.fee-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}

.fee-table th {
    background: rgba(240, 185, 11, 0.08);
    font-weight: 600;
    color: var(--primary);
}

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

.fee-table tr:last-child td {
    border-bottom: none;
}

.fee-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* FAQ Section */
.faq-section {
    padding: var(--gap) 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-item summary {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

.faq-item summary:hover {
    background: rgba(240, 185, 11, 0.04);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 22px;
    color: var(--primary);
    font-weight: 400;
    transition: transform 0.3s;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item p {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Final CTA */
.final-cta {
    padding: var(--gap) 0;
    background: var(--bg-section);
    text-align: center;
}

.final-cta h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.final-cta > p {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.final-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.final-warning {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Friend Links */
.friend-links {
    padding: var(--gap) 0;
    background: var(--bg-section);
}

.friend-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.friend-links-group h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.friend-links-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.friend-links-list a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.friend-links-list a:hover {
    color: var(--primary);
}

/* Footer */
.footer {
    padding: 48px 0 24px;
    border-top: 1px solid var(--border);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

.footer-disclaimer {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 24px;
    line-height: 1.8;
}

.footer-copy {
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Mobile Sticky CTA */
.mobile-sticky-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    gap: 12px;
    z-index: 1001;
}

.mobile-sticky-cta .btn {
    flex: 1;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 12px 24px;
    background: var(--primary);
    color: #000;
    font-weight: 600;
    border-radius: 8px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
    z-index: 2000;
    font-size: 14px;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .market-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .security-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .friend-links-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}

@media (max-width: 768px) {
    :root {
        --gap: 48px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 32px;
    }

    .main-nav,
    .header-actions {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 48px;
    }

    .hero h1 {
        font-size: 28px;
    }

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

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

    .hero-buttons .btn {
        width: 100%;
        max-width: 320px;
    }

    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .trust-item {
        padding: 20px 12px;
    }

    .market-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .market-card {
        padding: 16px;
    }

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

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

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

    .app-inner {
        flex-direction: column;
        gap: 40px;
    }

    .app-mockup {
        flex: none;
    }

    .phone-frame {
        width: 220px;
        height: 440px;
    }

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

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

    .fee-table th,
    .fee-table td {
        padding: 12px 16px;
        font-size: 14px;
    }

    .final-cta h2 {
        font-size: 26px;
    }

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

    .final-buttons .btn {
        width: 100%;
        max-width: 320px;
    }

    .friend-links-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    .friend-links-group h3 {
        text-align: center;
    }

    .friend-links-list {
        align-items: center;
    }

    .footer-links {
        gap: 16px;
    }

    .mobile-sticky-cta {
        display: flex;
    }

    body {
        padding-bottom: 60px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 24px;
    }

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

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

    .trust-tag {
        font-size: 12px;
    }

    .fee-table {
        font-size: 13px;
    }

    .fee-table th,
    .fee-table td {
        padding: 10px 12px;
    }
}