:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-light: #F5F9FF;
    --white: #FFFFFF;
    --gray-50: #F7F9FC;
    --gray-100: #EEF2F7;
    --gray-200: #E3E8F0;
    --gray-500: #667085;
    --gray-700: #344054;
    --gray-900: #111827;
    --shadow: 0 18px 45px rgba(17, 24, 39, .08);
    --radius-lg: 28px;
    --radius-md: 22px;
    --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--gray-900);
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FBFF 45%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--gray-100);
}
.nav-wrap {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: .02em;
    color: var(--gray-900);
}
.logo img { width: 38px; height: 38px; object-fit: contain; border-radius: 12px; }
.nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    border-radius: 14px;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--gray-700); border-radius: 99px; }
.desktop-nav.mobile-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    padding: 16px;
    border-radius: 22px;
    border: 1px solid var(--gray-100);
    background: var(--white);
    box-shadow: var(--shadow);
}
.mobile-nav.is-open { display: flex; }
.desktop-nav a {
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 650;
    padding: 10px 12px;
    border-radius: 999px;
}
.desktop-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.content-container, .section, .launch-hero, .page-hero, .cta-section, .footer-inner {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
}
.gradient-bg {
    background: radial-gradient(circle at 20% 0%, rgba(41,128,254,.16), transparent 32%), linear-gradient(135deg, #FFFFFF 0%, #F5F9FF 100%);
}
.launch-hero {
    padding: 54px 0 34px;
    display: grid;
    gap: 34px;
    align-items: center;
}
.hero-copy h1, .page-hero h1 {
    margin: 0 0 18px;
    font-size: clamp(36px, 10vw, 76px);
    line-height: 1.08;
    letter-spacing: -.045em;
}
.hero-copy p, .page-hero p, .section-lead {
    margin: 0;
    color: var(--gray-500);
    font-size: 17px;
}
.hero-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 26px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    border: 0;
    box-shadow: 0 14px 28px rgba(41,128,254,.22);
    transition: transform .2s ease, box-shadow .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(41,128,254,.28); }
.security-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.security-tags span, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
}
.hero-visual, .app-showcase {
    position: relative;
    min-height: 420px;
    border-radius: 34px;
    background: linear-gradient(150deg, #F4F8FF, #FFFFFF);
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.hero-visual::before, .app-showcase::before {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(41,128,254,.12);
    filter: blur(10px);
}
.hero-phone { position: relative; width: min(76%, 340px); z-index: 2; }
.float-label {
    position: absolute;
    z-index: 3;
    padding: 9px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,.88);
    border: 1px solid var(--gray-100);
    box-shadow: 0 12px 32px rgba(17,24,39,.08);
    font-size: 13px;
    font-weight: 800;
    color: var(--gray-700);
}
.float-label.one { top: 28px; left: 18px; }
.float-label.two { top: 86px; right: 18px; }
.float-label.three { bottom: 88px; left: 18px; }
.float-label.four { bottom: 26px; right: 18px; }
.section { padding: 54px 0; }
.section-title { margin-bottom: 22px; }
.section-title h2 { margin: 0 0 10px; font-size: clamp(28px, 6vw, 46px); line-height: 1.18; letter-spacing: -.03em; }
.highlight-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.highlight-card, .launch-card, .category-card, .risk-card, .faq-item, .info-card, .step-card, .safety-panel {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: 0 10px 28px rgba(17,24,39,.045);
}
.highlight-card small { color: var(--primary); font-weight: 900; }
.highlight-card h3, .category-card h3, .risk-card h3, .step-card h3, .info-card h3 { margin: 7px 0 6px; font-size: 20px; }
.highlight-card p, .category-card p, .risk-card p, .step-card p, .info-card p, .faq-item p { color: var(--gray-500); margin: 0; }
.text-link { display: inline-flex; margin-top: 12px; color: var(--primary); font-weight: 800; }
.big-feature-card {
    display: grid;
    gap: 28px;
    align-items: center;
    padding: 28px;
    border-radius: 32px;
    border: 1px solid var(--gray-100);
    background: var(--white);
    box-shadow: var(--shadow);
    margin: 22px 0;
}
.big-feature-card:nth-child(even), .cold-wallet-feature { background: linear-gradient(135deg, #FFFFFF, #F5F9FF); }
.feature-media { min-height: 280px; display: flex; align-items: center; justify-content: center; border-radius: 28px; background: var(--primary-light); overflow: hidden; }
.feature-media img { max-height: 360px; object-fit: contain; }
.feature-copy h2 { margin: 0 0 14px; font-size: clamp(28px, 6vw, 46px); line-height: 1.14; letter-spacing: -.03em; }
.feature-copy p { color: var(--gray-500); }
.feature-list { display: grid; gap: 10px; padding: 0; margin: 18px 0; list-style: none; }
.feature-list li { padding-left: 28px; position: relative; color: var(--gray-700); }
.feature-list li::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); position: absolute; left: 0; top: .65em; }
.process-steps { display: grid; gap: 14px; counter-reset: step; }
.step-card { position: relative; padding-top: 26px; }
.step-number {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--primary);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
}
.risk-grid, .category-grid, .app-category-center { display: grid; grid-template-columns: 1fr; gap: 14px; }
.risk-card { border-left: 4px solid var(--primary); }
.faq-list { display: grid; gap: 12px; }
.faq-item h3 { margin: 0 0 8px; font-size: 18px; }
.cta-section {
    margin-top: 36px;
    margin-bottom: 58px;
    padding: 42px 24px;
    text-align: center;
    border-radius: 34px;
    border: 1px solid var(--gray-100);
    background: linear-gradient(135deg, #F5F9FF, #FFFFFF 55%, #EAF3FF);
    box-shadow: var(--shadow);
}
.cta-section h2 { margin: 0 0 12px; font-size: clamp(28px, 7vw, 48px); letter-spacing: -.03em; }
.cta-section p { color: var(--gray-500); max-width: 720px; margin: 0 auto 24px; }
.page-hero { padding: 52px 0 20px; }
.page-layout { width: min(100% - 32px, var(--container)); margin: 0 auto; padding: 30px 0 58px; display: grid; gap: 24px; }
.article-panel { background: var(--white); border: 1px solid var(--gray-100); border-radius: 30px; padding: 24px; box-shadow: var(--shadow); }
.article-panel h2 { margin-top: 0; font-size: 28px; }
.article-panel p { color: var(--gray-700); }
.check-list, .number-list { margin: 0; padding-left: 22px; color: var(--gray-700); }
.check-list li, .number-list li { margin: 9px 0; }
.side-panel { display: grid; gap: 14px; align-content: start; }
.safety-panel { background: linear-gradient(135deg, #FFFFFF, #F5F9FF); }
.site-footer { background: #F7F9FC; border-top: 1px solid var(--gray-100); padding: 34px 0 22px; }
.footer-inner { display: grid; gap: 24px; }
.footer-brand p { color: var(--gray-500); max-width: 560px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.footer-links a { color: var(--gray-700); font-weight: 700; }
.copyright { width: min(100% - 32px, var(--container)); margin: 22px auto 0; padding-top: 18px; border-top: 1px solid var(--gray-200); color: var(--gray-500); font-size: 13px; }
@media (min-width: 640px) {
    .highlight-bar, .risk-grid, .category-grid, .app-category-center { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 920px) {
    .nav-toggle { display: none; }
    .desktop-nav.mobile-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: flex-end;
        gap: 2px;
        padding: 0;
        border: 0;
        border-radius: 0;
        box-shadow: none;
        background: transparent;
    }
    .launch-hero { grid-template-columns: 1fr .92fr; padding: 86px 0 56px; }
    .highlight-bar { grid-template-columns: repeat(3, 1fr); }
    .big-feature-card { grid-template-columns: 1fr 1fr; padding: 42px; }
    .cold-wallet-feature .feature-media, .dapp-feature .feature-media { order: 2; }
    .category-grid, .app-category-center { grid-template-columns: repeat(4, 1fr); }
    .risk-grid { grid-template-columns: repeat(3, 1fr); }
    .process-steps { grid-template-columns: repeat(3, 1fr); }
    .page-layout { grid-template-columns: minmax(0, 1fr) 340px; }
    .article-panel { padding: 34px; }
    .footer-inner { grid-template-columns: 1.2fr .8fr; align-items: start; }
}
@media (min-width: 1180px) {
    .hero-copy h1 { font-size: 72px; }
    .hero-visual { min-height: 560px; }
}