:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-light: #F4F8FF;
    --white: #FFFFFF;
    --surface: #F7F9FC;
    --surface-2: #EEF4FB;
    --line: #E1E8F2;
    --text: #1E2A3A;
    --muted: #5D6B7D;
    --deep: #102033;
    --shadow: 0 18px 45px rgba(41, 128, 254, .10);
    --radius-lg: 32px;
    --radius-md: 24px;
    --radius-sm: 18px;
}

* { 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(--text);
    background: linear-gradient(180deg, #FFFFFF 0%, #F6FAFF 42%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 16px; color: var(--muted); }
ul, ol { margin: 0; padding-left: 20px; }
li { margin: 8px 0; color: var(--muted); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(225, 232, 242, .85);
}
.nav-wrap {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.logo-link { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); letter-spacing: .02em; }
.site-logo, .footer-logo { width: 38px; height: 38px; object-fit: contain; border-radius: 12px; }
.nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}
.nav-toggle span { width: 18px; height: 2px; border-radius: 2px; background: var(--deep); }
.site-nav {
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--white);
    box-shadow: var(--shadow);
}
.site-nav.is-open { display: grid; }
.site-nav a {
    padding: 10px 12px;
    border-radius: 14px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 650;
}
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--primary-soft); }

.content-container, .section-wrap, .page-wrap { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.narrow-container { width: min(860px, calc(100% - 32px)); margin: 0 auto; }
.section-eyebrow, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    padding: 7px 12px;
    border: 1px solid rgba(41, 128, 254, .18);
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
}
.section-title { margin: 12px 0 12px; font-size: clamp(28px, 5vw, 46px); line-height: 1.15; letter-spacing: -.04em; color: var(--deep); }
.section-lead { max-width: 760px; font-size: 16px; }
.gradient-bg { background: radial-gradient(circle at 18% 0%, rgba(41,128,254,.14), transparent 34%), linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 100%); }

.launch-hero {
    position: relative;
    padding: 56px 0 28px;
    overflow: hidden;
}
.launch-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 78% 16%, rgba(41, 128, 254, .18), transparent 30%);
    pointer-events: none;
}
.launch-hero .content-container {
    position: relative;
    display: grid;
    gap: 30px;
    align-items: center;
}
.hero-copy h1 {
    margin: 14px 0 16px;
    font-size: clamp(38px, 10vw, 74px);
    line-height: .98;
    letter-spacing: -.06em;
    color: var(--deep);
}
.hero-copy .lead { font-size: clamp(17px, 3vw, 21px); color: #405066; max-width: 680px; }
.hero-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 14px 28px rgba(41, 128, 254, .22);
    border: 1px solid var(--primary);
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(41, 128, 254, .28); }
.safety-tags, .mini-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.safety-tags span, .mini-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--white);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}
.app-showcase { position: relative; min-height: 420px; display: grid; place-items: center; }
.hero-visual {
    position: relative;
    width: min(380px, 92vw);
    margin: 0 auto;
    padding: 20px;
    border-radius: 42px;
    background: linear-gradient(145deg, #FFFFFF, #EEF6FF);
    border: 1px solid rgba(41, 128, 254, .18);
    box-shadow: 0 28px 70px rgba(41,128,254,.18);
}
.hero-visual img { width: 100%; border-radius: 28px; object-fit: contain; }
.float-label {
    position: absolute;
    padding: 10px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,.92);
    border: 1px solid var(--line);
    color: var(--deep);
    font-size: 12px;
    font-weight: 800;
    box-shadow: 0 12px 28px rgba(16,32,51,.08);
    white-space: nowrap;
}
.float-label.one { top: 20px; left: -8px; }
.float-label.two { top: 35%; right: -12px; }
.float-label.three { bottom: 78px; left: -14px; }
.float-label.four { bottom: 24px; right: 20px; }

.highlight-bar { padding: 28px 0 42px; }
.highlight-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.launch-card, .category-card, .risk-card, .faq-item, .step-card, .info-card, .link-card {
    background: rgba(255,255,255,.92);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 30px rgba(16, 32, 51, .04);
}
.launch-card { padding: 18px; }
.launch-card .tag { color: var(--primary); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.launch-card h3 { margin: 8px 0 8px; font-size: 18px; color: var(--deep); }
.launch-card p { font-size: 14px; margin-bottom: 12px; }
.text-link { color: var(--primary); font-weight: 800; font-size: 14px; }

.feature-section { padding: 28px 0; }
.big-feature-card {
    display: grid;
    gap: 24px;
    align-items: center;
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: var(--white);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.big-feature-card.alt { background: linear-gradient(135deg, #F7FAFF, #FFFFFF); }
.big-feature-card.reverse .feature-image { order: -1; }
.feature-copy h2 { margin: 10px 0 12px; font-size: clamp(26px, 6vw, 44px); line-height: 1.15; letter-spacing: -.04em; color: var(--deep); }
.feature-list { display: grid; gap: 10px; margin: 18px 0; padding: 0; list-style: none; }
.feature-list li {
    margin: 0;
    padding: 12px 14px;
    border-radius: 16px;
    background: var(--primary-light);
    border: 1px solid rgba(41,128,254,.12);
    color: #415064;
}
.feature-image {
    min-height: 260px;
    display: grid;
    place-items: center;
    border-radius: 28px;
    background: radial-gradient(circle at 50% 0%, rgba(41,128,254,.16), transparent 45%), var(--surface);
    padding: 20px;
}
.feature-image img { max-height: 430px; object-fit: contain; }
.wallet-feature .feature-image { background: linear-gradient(155deg, #EEF6FF, #FFFFFF); }
.cold-wallet-feature .feature-image { background: linear-gradient(155deg, #F2F6FB, #EAF3FF); }
.swap-feature .feature-image { background: linear-gradient(155deg, #FFFFFF, #EFF6FF); }
.dapp-feature .feature-image { background: linear-gradient(155deg, #F7FAFF, #E9F3FF); }

.process-section, .risk-section, .category-section, .faq-section, .cta-section, .page-hero, .content-section { padding: 54px 0; }
.process-steps { display: grid; gap: 14px; margin-top: 24px; }
.step-card { padding: 18px; position: relative; overflow: hidden; }
.step-number {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    margin-bottom: 12px;
}
.step-card h3, .risk-card h3, .category-card h3, .info-card h3 { margin: 0 0 8px; color: var(--deep); }
.step-card p, .risk-card p, .category-card p, .info-card p { font-size: 14px; }
.risk-grid, .category-grid, .app-category-center { display: grid; gap: 14px; margin-top: 24px; }
.risk-card { padding: 18px; border-left: 4px solid var(--primary); }
.risk-card .suggestion { display: block; margin-top: 12px; color: var(--deep); font-weight: 800; font-size: 14px; }
.app-category-center .category-card, .category-grid .category-card { padding: 18px; }
.category-card { transition: transform .2s ease, box-shadow .2s ease; }
.category-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

.faq-list { display: grid; gap: 12px; margin-top: 24px; }
.faq-item { padding: 18px; }
.faq-item h3 { margin: 0 0 8px; font-size: 18px; color: var(--deep); }
.cta-section { text-align: center; }
.cta-box {
    padding: 34px 20px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #EEF6FF, #FFFFFF 62%, #F7FAFF);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.cta-box h2 { margin: 0 0 12px; font-size: clamp(26px, 6vw, 42px); color: var(--deep); letter-spacing: -.04em; }
.cta-box p { max-width: 720px; margin-left: auto; margin-right: auto; }

.page-hero { background: radial-gradient(circle at 86% 0%, rgba(41,128,254,.16), transparent 34%), linear-gradient(180deg, #FFFFFF, #F8FBFF); }
.page-hero-inner { width: min(980px, calc(100% - 32px)); margin: 0 auto; }
.page-hero h1 { margin: 14px 0 14px; font-size: clamp(34px, 8vw, 58px); line-height: 1.08; letter-spacing: -.05em; color: var(--deep); }
.page-summary { font-size: 17px; max-width: 780px; }
.page-layout { display: grid; gap: 22px; width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.article-card, .side-panel, .safety-panel, .checklist-panel {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: 0 14px 38px rgba(16,32,51,.05);
}
.article-card { padding: 24px; }
.article-card h2 { margin: 22px 0 10px; font-size: 26px; color: var(--deep); letter-spacing: -.02em; }
.article-card h2:first-child { margin-top: 0; }
.side-panel, .safety-panel, .checklist-panel { padding: 20px; }
.side-panel h3, .safety-panel h3, .checklist-panel h3 { margin: 0 0 12px; color: var(--deep); }
.info-grid { display: grid; gap: 14px; margin-top: 22px; }
.info-card { padding: 18px; }
.check-list { list-style: none; padding: 0; display: grid; gap: 10px; }
.check-list li { margin: 0; padding: 11px 12px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
.related-links { display: grid; gap: 10px; margin-top: 14px; }
.related-links a, .link-card { padding: 12px 14px; border-radius: 16px; background: var(--primary-light); border: 1px solid rgba(41,128,254,.14); color: var(--primary); font-weight: 800; }
.page-download { margin-top: 24px; }
.download-flow { counter-reset: step; list-style: none; padding: 0; display: grid; gap: 12px; margin-top: 22px; }
.download-flow li { position: relative; padding: 16px 16px 16px 58px; border-radius: 18px; border: 1px solid var(--line); background: var(--white); margin: 0; color: var(--muted); }
.download-flow li::before { counter-increment: step; content: counter(step); position: absolute; left: 16px; top: 16px; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 10px; background: var(--primary); color: var(--white); font-weight: 900; }

.site-footer { margin-top: 40px; padding: 36px 0 28px; background: #F3F7FC; border-top: 1px solid var(--line); }
.footer-inner { width: min(1180px, calc(100% - 32px)); margin: 0 auto; display: grid; gap: 22px; }
.footer-brand { display: flex; gap: 12px; align-items: flex-start; }
.footer-brand strong { color: var(--deep); }
.footer-brand p { font-size: 14px; max-width: 520px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.footer-links a { color: var(--muted); font-weight: 700; font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-note { width: min(1180px, calc(100% - 32px)); margin: 22px auto 0; font-size: 13px; color: #758294; }

@media (min-width: 620px) {
    .highlight-grid, .risk-grid, .category-grid, .app-category-center, .info-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
    .nav-toggle { display: none; }
    .site-nav {
        position: static;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
        gap: 2px;
    }
    .site-nav a { font-size: 14px; padding: 8px 10px; }
    .launch-hero { padding: 82px 0 44px; }
    .launch-hero .content-container { grid-template-columns: 1.05fr .95fr; gap: 52px; }
    .hero-copy .lead { max-width: 620px; }
    .app-showcase { min-height: 560px; }
    .hero-visual { width: min(460px, 100%); padding: 24px; }
    .highlight-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .big-feature-card { grid-template-columns: 1fr 1fr; padding: 38px; gap: 40px; }
    .big-feature-card.reverse .feature-image { order: 2; }
    .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .risk-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .app-category-center { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .page-layout { grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
    .side-panel { position: sticky; top: 96px; }
    .article-card { padding: 34px; }
    .footer-inner { grid-template-columns: 1fr 1fr; align-items: start; }
}

@media (min-width: 1160px) {
    .site-nav a { padding: 9px 12px; }
    .feature-section { padding: 36px 0; }
}