* {
    box-sizing: border-box;
}
:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-pale: #F5F9FF;
    --text: #1F2937;
    --muted: #6B7280;
    --line: #E5EAF1;
    --bg: #F7FAFF;
    --card: #FFFFFF;
    --dark: #111827;
    --shadow: 0 18px 50px rgba(41, 128, 254, 0.12);
    --soft-shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
    --radius: 28px;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 42%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(229,234,241,0.9);
}
.nav-shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
    white-space: nowrap;
}
.logo, .footer-logo {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 8px 18px rgba(41,128,254,0.18);
}
.main-nav {
    display: none;
    flex-direction: column;
    gap: 4px;
    position: absolute;
    top: 67px;
    left: 14px;
    right: 14px;
    background: #FFFFFF;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--soft-shadow);
}
.main-nav a {
    padding: 10px 12px;
    color: #374151;
    font-size: 15px;
    border-radius: 14px;
}
.main-nav a.active,
.main-nav a:hover {
    color: var(--primary);
    background: var(--primary-soft);
}
.nav-toggle {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.nav-toggle-label {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 14px;
    display: grid;
    place-content: center;
    gap: 5px;
    cursor: pointer;
    background: #FFFFFF;
}
.nav-toggle-label span {
    width: 18px;
    height: 2px;
    background: var(--dark);
    border-radius: 99px;
}
.nav-toggle:checked ~ .main-nav {
    display: flex;
}
.content-container,
.section-shell,
.page-shell {
    width: min(100% - 32px, 1120px);
    margin: 0 auto;
}
.launch-hero {
    position: relative;
    padding: 48px 0 34px;
    overflow: hidden;
}
.launch-hero::before {
    content: "";
    position: absolute;
    inset: 20px -15% auto auto;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(41,128,254,0.2), transparent 65%);
    pointer-events: none;
}
.hero-grid {
    display: grid;
    gap: 34px;
    align-items: center;
}
.hero-copy h1,
.page-hero h1 {
    margin: 0 0 18px;
    color: var(--dark);
    font-size: clamp(36px, 8vw, 72px);
    line-height: 1.08;
    letter-spacing: -0.055em;
}
.hero-copy p,
.page-hero p,
.section-lead {
    color: var(--muted);
    font-size: 17px;
    margin: 0 0 24px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin: 26px 0 22px;
}
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 26px;
    border-radius: 999px;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
    letter-spacing: 0.02em;
    border: 1px solid var(--primary);
    box-shadow: 0 14px 28px rgba(41,128,254,0.26);
    transition: transform .2s ease, box-shadow .2s ease;
}
.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 32px rgba(41,128,254,0.3);
}
.security-tags,
.hero-badges,
.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.security-tags span,
.hero-badges span,
.category-badge,
.kicker,
.tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 7px 12px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}
.hero-visual,
.app-showcase {
    position: relative;
    min-height: 420px;
    display: grid;
    place-items: center;
    background: linear-gradient(145deg, #F8FBFF 0%, #EAF3FF 100%);
    border: 1px solid var(--line);
    border-radius: 34px;
    box-shadow: var(--shadow);
    overflow: hidden;
}
.hero-visual::before,
.app-showcase::before {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(41,128,254,0.14);
    filter: blur(2px);
}
.hero-visual img,
.app-showcase img {
    position: relative;
    max-height: 420px;
    width: auto;
    object-fit: contain;
    z-index: 1;
    filter: drop-shadow(0 20px 35px rgba(24,54,105,0.16));
}
.float-label {
    position: absolute;
    z-index: 2;
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(229,234,241,0.9);
    border-radius: 18px;
    padding: 9px 12px;
    box-shadow: var(--soft-shadow);
    color: #374151;
    font-size: 13px;
    font-weight: 700;
}
.float-label.one { top: 36px; left: 28px; }
.float-label.two { right: 24px; top: 82px; }
.float-label.three { left: 30px; bottom: 82px; }
.float-label.four { right: 24px; bottom: 38px; }
.section {
    padding: 42px 0;
}
.section-title {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 22px;
}
.section-title h2 {
    margin: 0;
    color: var(--dark);
    font-size: clamp(28px, 5vw, 46px);
    line-height: 1.15;
    letter-spacing: -0.04em;
}
.highlight-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.highlight-card,
.category-card,
.risk-card,
.faq-item,
.info-card,
.step-card,
.check-card,
.note-panel,
.related-panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(15,23,42,0.04);
}
.highlight-card {
    display: grid;
    gap: 8px;
}
.highlight-card .tag {
    width: max-content;
}
.highlight-card h3,
.category-card h3,
.risk-card h3,
.faq-item h3,
.info-card h3,
.step-card h3,
.check-card h3,
.note-panel h3,
.related-panel h3 {
    margin: 0;
    color: var(--dark);
    line-height: 1.35;
}
.highlight-card p,
.category-card p,
.risk-card p,
.faq-item p,
.info-card p,
.step-card p,
.check-card p,
.note-panel p,
.related-panel p {
    margin: 0;
    color: var(--muted);
}
.text-link,
.related-link {
    color: var(--primary);
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.text-link::after,
.related-link::after {
    content: "→";
}
.big-feature-card,
.launch-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 32px;
    padding: 22px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 24px;
    align-items: center;
    overflow: hidden;
}
.big-feature-card + .big-feature-card {
    margin-top: 22px;
}
.big-feature-card .feature-copy h2,
.launch-card h2 {
    margin: 0 0 14px;
    font-size: clamp(28px, 5vw, 44px);
    line-height: 1.14;
    color: var(--dark);
    letter-spacing: -0.04em;
}
.feature-copy p {
    color: var(--muted);
    margin: 0 0 16px;
}
.feature-points,
.clean-list,
.check-list {
    display: grid;
    gap: 10px;
    padding: 0;
    list-style: none;
    margin: 16px 0;
}
.feature-points li,
.clean-list li,
.check-list li {
    position: relative;
    padding-left: 26px;
    color: #374151;
}
.feature-points li::before,
.clean-list li::before,
.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px var(--primary-soft);
}
.feature-image {
    min-height: 260px;
    display: grid;
    place-items: center;
    border-radius: 26px;
    background: linear-gradient(145deg, #F6FAFF, #EAF3FF);
    border: 1px solid var(--line);
}
.feature-image img {
    max-height: 330px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 18px 28px rgba(24,54,105,0.14));
}
.cold-wallet-feature,
.dapp-feature {
    background: linear-gradient(145deg, #FFFFFF, #F4F8FF);
}
.swap-feature .feature-image {
    background: linear-gradient(145deg, #F7FAFF, #EEF6FF);
}
.process-steps {
    display: grid;
    gap: 14px;
}
.step-card {
    position: relative;
    padding-top: 54px;
}
.step-number {
    position: absolute;
    top: 18px;
    left: 18px;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
}
.risk-grid {
    display: grid;
    gap: 14px;
}
.risk-card {
    border-left: 4px solid var(--primary);
}
.risk-card strong {
    display: block;
    margin: 8px 0 4px;
    color: var(--dark);
}
.app-category-center,
.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.category-card {
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 16px;
}
.faq-grid {
    display: grid;
    gap: 14px;
}
.cta-section {
    text-align: center;
    background: linear-gradient(145deg, #F5F9FF 0%, #EAF3FF 100%);
    border: 1px solid var(--line);
    border-radius: 34px;
    padding: 34px 20px;
    box-shadow: var(--shadow);
}
.cta-section h2 {
    margin: 0 0 12px;
    color: var(--dark);
    font-size: clamp(28px, 5vw, 42px);
    letter-spacing: -0.04em;
}
.cta-section p {
    margin: 0 auto 22px;
    max-width: 680px;
    color: var(--muted);
}
.page-hero {
    padding: 48px 0 28px;
}
.page-hero-inner {
    background: linear-gradient(145deg, #FFFFFF, #F2F7FF);
    border: 1px solid var(--line);
    border-radius: 34px;
    padding: 28px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 20px;
}
.page-hero .category-badge {
    width: max-content;
    margin-bottom: 12px;
}
.page-layout {
    display: grid;
    gap: 20px;
    padding-bottom: 50px;
}
.article-card {
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 24px;
    box-shadow: 0 12px 34px rgba(15,23,42,0.05);
}
.article-card h2 {
    margin-top: 0;
    font-size: 28px;
    color: var(--dark);
    letter-spacing: -0.03em;
}
.article-card p {
    color: #4B5563;
}
.two-column {
    display: grid;
    gap: 16px;
}
.side-stack {
    display: grid;
    gap: 16px;
    align-content: start;
}
.note-panel {
    background: var(--primary-pale);
}
.panel-number {
    display: inline-grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 12px;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
    margin-bottom: 10px;
}
.mini-grid {
    display: grid;
    gap: 12px;
    margin: 20px 0;
}
.mini-item {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #FFFFFF;
}
.mini-item h3 {
    margin: 0 0 6px;
}
.mini-item p {
    margin: 0;
    color: var(--muted);
}
.download-zone {
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
}
.download-page-grid {
    display: grid;
    gap: 18px;
}
.install-steps {
    counter-reset: install;
    display: grid;
    gap: 14px;
    padding: 0;
    list-style: none;
}
.install-steps li {
    counter-increment: install;
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 18px 18px 18px 62px;
    position: relative;
}
.install-steps li::before {
    content: counter(install);
    position: absolute;
    left: 18px;
    top: 17px;
    width: 30px;
    height: 30px;
    border-radius: 11px;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
}
.site-footer {
    border-top: 1px solid var(--line);
    background: #FFFFFF;
    padding: 32px 0 18px;
}
.footer-shell {
    width: min(100% - 32px, 1120px);
    margin: 0 auto;
    display: grid;
    gap: 22px;
}
.footer-brand {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.footer-brand p {
    margin: 4px 0 0;
    color: var(--muted);
}
.footer-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.footer-links a {
    color: #4B5563;
    background: var(--primary-pale);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 12px;
}
.footer-bottom {
    width: min(100% - 32px, 1120px);
    margin: 22px auto 0;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
}
@media (min-width: 640px) {
    .highlight-bar,
    .risk-grid,
    .app-category-center,
    .category-grid,
    .mini-grid,
    .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .process-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}
@media (min-width: 900px) {
    .nav-toggle-label { display: none; }
    .main-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 2px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }
    .main-nav a {
        font-size: 14px;
        padding: 8px 10px;
    }
    .launch-hero { padding: 72px 0 46px; }
    .hero-grid {
        grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
    }
    .highlight-bar {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .big-feature-card,
    .launch-card {
        grid-template-columns: 1fr 0.92fr;
        padding: 34px;
    }
    .big-feature-card.reverse {
        grid-template-columns: 0.92fr 1fr;
    }
    .big-feature-card.reverse .feature-image {
        order: -1;
    }
    .app-category-center {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .risk-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .process-steps {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .page-hero-inner {
        grid-template-columns: 1.15fr 0.85fr;
        padding: 38px;
    }
    .page-layout {
        grid-template-columns: minmax(0, 1fr) 330px;
        align-items: start;
    }
    .two-column {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .download-page-grid {
        grid-template-columns: minmax(0, 1fr) 360px;
        align-items: start;
    }
    .footer-shell {
        grid-template-columns: 1fr auto;
        align-items: center;
    }
}
@media (min-width: 1100px) {
    .main-nav a { padding: 9px 12px; }
    .section { padding: 56px 0; }
}
@media (max-width: 420px) {
    .hero-visual, .app-showcase { min-height: 330px; }
    .hero-visual img, .app-showcase img { max-height: 320px; }
    .float-label { font-size: 12px; padding: 7px 9px; }
    .float-label.one { top: 20px; left: 14px; }
    .float-label.two { top: 60px; right: 12px; }
    .float-label.three { bottom: 74px; left: 14px; }
    .float-label.four { right: 12px; bottom: 20px; }
    .article-card, .page-hero-inner { padding: 20px; }
}