/* ============================================
   Self-Custodial Wallet - Styles
   Dark Theme | Mobile-Responsive | Pure CSS
   ============================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
                 Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue",
                 Arial, sans-serif;
    background-color: #0a0a1a;
    color: #e0e0e0;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: #00d4ff;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover, a:focus {
    color: #66e5ff;
    text-decoration: underline;
}

/* ---- Utility ---- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #0a0a1a;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 14px 36px;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    text-decoration: none;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
    text-decoration: none;
    color: #0a0a1a;
}

.cta-button:active {
    transform: translateY(0);
}

.cta-button-secondary {
    background: transparent;
    color: #00d4ff;
    border: 2px solid #00d4ff;
}

.cta-button-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.15);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: #ffffff;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #8899aa;
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
}

/* ---- Page Wrapper ---- */
.page-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Navigation ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    padding-bottom: 12px;
}

.navbar-brand {
    font-size: 1.3rem;
    font-weight: 800;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-brand .brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #00d4ff, #0066ff);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.navbar-links {
    display: flex;
    gap: 24px;
    list-style: none;
    align-items: center;
}

.navbar-links a {
    color: #aabbcc;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 4px 0;
    position: relative;
}

.navbar-links a:hover {
    color: #00d4ff;
}

/* Active nav link highlight */
.navbar-links a.active {
    color: #00d4ff;
}

.navbar-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #00d4ff;
    border-radius: 1px;
}

/* ---- Page Header (sub-pages) ---- */
.page-header {
    padding: 140px 0 60px;
    background: linear-gradient(180deg, #0a0a1a 0%, #0d0d2b 50%, #0a0a1a 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
    animation: pulseGlow 8s ease-in-out infinite;
}

.page-header h1 {
    font-size: 2.8rem;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: -1px;
    position: relative;
    z-index: 1;
}

.page-header h1 .highlight {
    background: linear-gradient(135deg, #00d4ff, #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.15rem;
    color: #8899aa;
    max-width: 600px;
    margin: 12px auto 0;
    position: relative;
    z-index: 1;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

/* ---- Hero Section ---- */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, #0a0a1a 0%, #0d0d2b 50%, #0a0a1a 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
    animation: pulseGlow 8s ease-in-out infinite;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 20px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, #00d4ff, #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: #8899aa;
    max-width: 650px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

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

.hero-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 20px;
    font-size: 0.85rem;
    color: #aabbcc;
}

/* ---- Sections General ---- */
.section {
    padding: 80px 0;
}

.section-alt {
    background: #0d0d2b;
}

/* ---- Home Teaser Cards ---- */
.teaser-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.teaser-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.teaser-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.teaser-icon {
    font-size: 2.5rem;
    margin-bottom: 14px;
    display: block;
}

.teaser-card h3 {
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 10px;
    font-weight: 700;
}

.teaser-card p {
    font-size: 0.95rem;
    color: #8899aa;
    line-height: 1.6;
    margin-bottom: 16px;
}

.teaser-link {
    display: inline-block;
    color: #00d4ff;
    font-weight: 600;
    font-size: 0.9rem;
    transition: gap 0.3s ease;
}

.teaser-link:hover {
    text-decoration: none;
    color: #66e5ff;
}

/* ---- One-Touch Exchange Prominent Section ---- */
.exchange-prominent {
    padding: 100px 0;
    background: linear-gradient(135deg, #0d0d2b 0%, #0a1a2b 50%, #0d0d2b 100%);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.exchange-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.exchange-info h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.exchange-info .exchange-tagline {
    font-size: 1.1rem;
    color: #00d4ff;
    margin-bottom: 24px;
    font-weight: 600;
}

.exchange-info p {
    color: #aabbcc;
    margin-bottom: 20px;
    font-size: 1rem;
}

.exchange-steps {
    list-style: none;
    margin-bottom: 28px;
}

.exchange-steps li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: #c0d0e0;
    font-size: 0.95rem;
}

.exchange-steps li::before {
    content: "\2192";
    color: #00d4ff;
    font-weight: 700;
}

.exchange-fee {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 30px;
    font-size: 0.9rem;
    color: #00d4ff;
    font-weight: 600;
    margin-bottom: 28px;
}

.exchange-visual {
    text-align: center;
}

.exchange-visual .exchange-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 20px;
    padding: 40px 30px;
    position: relative;
}

.exchange-visual .exchange-arrow {
    font-size: 3rem;
    color: #00d4ff;
    display: block;
    margin: 20px 0;
    animation: bounceArrow 2s ease-in-out infinite;
}

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

.exchange-visual .exchange-coins {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.exchange-coin {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.exchange-coin .coin-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
}

.coin-btc { background: #f7931a; color: #fff; }
.coin-eth { background: #627eea; color: #fff; }
.coin-trx { background: #ef0027; color: #fff; }
.coin-usdt { background: #26a17b; color: #fff; }

/* ---- About Page ---- */

/* Mission / Vision block */
.mission-block {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 60px;
}

.mission-block p {
    color: #aabbcc;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

/* About content two-column */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.about-text h3 {
    font-size: 1.4rem;
    color: #ffffff;
    margin-bottom: 14px;
    font-weight: 700;
}

.about-text p {
    color: #aabbcc;
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 14px;
}

/* Values cards */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.value-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: border-color 0.3s ease;
}

.value-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
}

.value-icon {
    font-size: 2.2rem;
    margin-bottom: 14px;
    display: block;
}

.value-card h3 {
    font-size: 1.15rem;
    color: #ffffff;
    margin-bottom: 8px;
    font-weight: 700;
}

.value-card p {
    font-size: 0.92rem;
    color: #8899aa;
    line-height: 1.6;
}

/* ---- Self-Custody Page ---- */

/* Warning box */
.warning-box {
    background: rgba(255, 100, 50, 0.08);
    border: 2px solid rgba(255, 100, 50, 0.35);
    border-radius: 16px;
    padding: 32px 28px;
    margin-bottom: 40px;
}

.warning-box.warning-critical {
    background: rgba(255, 50, 50, 0.1);
    border-color: rgba(255, 50, 50, 0.4);
}

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

.warning-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.warning-box h3 {
    font-size: 1.2rem;
    color: #ff6633;
    font-weight: 700;
}

.warning-box.warning-critical h3 {
    color: #ff4444;
}

.warning-box p {
    color: #ccbbaa;
    font-size: 0.98rem;
    line-height: 1.7;
}

.warning-box.warning-critical p {
    color: #ddbbbb;
}

/* Self-custody content */
.sc-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.sc-text h3 {
    font-size: 1.4rem;
    color: #ffffff;
    margin-bottom: 14px;
    font-weight: 700;
}

.sc-text p {
    color: #aabbcc;
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 14px;
}

.sc-features {
    list-style: none;
}

.sc-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    font-size: 1rem;
    color: #c0d0e0;
}

.sc-features li::before {
    content: "\2713";
    color: #00d4ff;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

/* How it works steps */
.steps-list {
    list-style: none;
    counter-reset: step-counter;
}

.steps-list li {
    counter-increment: step-counter;
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.steps-list li:last-child {
    border-bottom: none;
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #00d4ff, #0066ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #0a0a1a;
    font-size: 1rem;
}

.step-content h4 {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 4px;
    font-weight: 600;
}

.step-content p {
    color: #8899aa;
    font-size: 0.92rem;
    line-height: 1.6;
}

/* ---- FAQ Accordion ---- */
.faq-section {
    padding: 60px 0 100px;
}

.faq-list {
    max-width: 750px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(0, 212, 255, 0.15);
}

.faq-item details {
    padding: 0;
}

.faq-item summary {
    padding: 18px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    color: #e0e0e0;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    user-select: none;
}

/* Remove default marker for all browsers */
.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::marker {
    display: none;
    content: '';
}

/* Custom open/close indicator */
.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    color: #00d4ff;
    font-weight: 300;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item details[open] summary::after {
    content: '\2212';
    transform: rotate(0deg);
}

.faq-item details[open] summary {
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    color: #ffffff;
}

.faq-answer {
    padding: 18px 24px 22px;
    color: #aabbcc;
    font-size: 0.98rem;
    line-height: 1.7;
}

.faq-answer p {
    margin-bottom: 10px;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul {
    list-style: none;
    margin: 8px 0;
}

.faq-answer ul li {
    padding: 4px 0;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.faq-answer ul li::before {
    content: "\2022";
    color: #00d4ff;
    font-weight: 700;
}

.faq-answer a {
    color: #00d4ff;
}

/* ---- Contact Form ---- */
.contact-section {
    padding: 60px 0 100px;
}

.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 40px 36px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: #c0d0e0;
    margin-bottom: 8px;
}

.form-group label .required {
    color: #ff4444;
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: #e0e0e0;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    outline: none;
}

.form-control:focus {
    border-color: #00d4ff;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-control::placeholder {
    color: #556677;
}

textarea.form-control {
    min-height: 130px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2300d4ff' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    cursor: pointer;
}

select.form-control option {
    background: #1a1a2e;
    color: #e0e0e0;
}

.submit-btn {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #0a0a1a;
    font-weight: 700;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

/* Thank you message */
.thank-you-message {
    display: none;
    text-align: center;
    padding: 60px 36px;
}

#thank-you:target {
    display: block;
}

#thank-you:target ~ form {
    display: none;
}

.thank-you-message .thank-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 20px;
}

.thank-you-message h2 {
    font-size: 1.8rem;
    color: #ffffff;
    margin-bottom: 12px;
    font-weight: 800;
}

.thank-you-message p {
    color: #aabbcc;
    font-size: 1.05rem;
    max-width: 400px;
    margin: 0 auto;
}

.thank-you-message .back-link {
    display: inline-block;
    margin-top: 28px;
    color: #00d4ff;
    font-weight: 600;
}

/* ---- Security & Features Cards (shared) ---- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 32px 24px;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 10px;
    font-weight: 700;
}

.feature-card p {
    font-size: 0.95rem;
    color: #8899aa;
    line-height: 1.6;
}

/* ---- Mobile App Section (kept for home page exchange teaser) ---- */
.mobile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

/* ---- Footer ---- */
.footer {
    background: #060612;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 32px;
}

.footer-brand p {
    color: #667788;
    font-size: 0.9rem;
    margin-top: 10px;
    max-width: 300px;
}

.footer-links h4 {
    color: #ffffff;
    font-size: 0.95rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: #667788;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #00d4ff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    text-align: center;
    color: #445566;
    font-size: 0.85rem;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .features-grid,
    .values-grid,
    .teaser-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html { font-size: 15px; }

    .navbar-links { display: none; }

    .container { padding: 0 20px; }

    .hero { padding: 120px 0 60px; }

    .hero h1 { font-size: 2.2rem; }

    .hero p { font-size: 1.05rem; }

    .page-header { padding: 120px 0 50px; }

    .page-header h1 { font-size: 2rem; }

    .section-title { font-size: 1.7rem; }
    .section { padding: 50px 0; }

    .exchange-grid,
    .about-content,
    .sc-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

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

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

    .cta-button {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    .exchange-info h2 { font-size: 1.7rem; }

    .contact-form-wrapper {
        padding: 28px 20px;
    }

    .faq-item summary {
        padding: 14px 18px;
        font-size: 0.98rem;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }

    .page-header h1 { font-size: 1.6rem; }

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

    .exchange-visual .exchange-coins {
        flex-wrap: wrap;
        justify-content: center;
    }

    .section-title { font-size: 1.4rem; }
}