:root {
    --primary: #2980FE;
    --primary-dark: #1764d7;
    --white: #ffffff;
    --bg: #f7faff;
    --soft: #eef5ff;
    --line: #dce7f5;
    --text: #263246;
    --muted: #66738a;
    --dark: #152033;
    --shadow: 0 18px 45px rgba(41, 128, 254, 0.12);
    --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang 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; }
p { margin: 0 0 16px; color: var(--muted); }
h1, h2, h3 { color: var(--dark); line-height: 1.18; margin: 0 0 16px; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 9vw, 5rem); }
h2 { font-size: clamp(1.85rem, 5vw, 3.2rem); }
h3 { font-size: 1.18rem; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(220, 231, 245, 0.72);
}
.nav-container {
    width: min(1180px, calc(100% - 32px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.logo, .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--dark);
}
.logo img, .footer-logo img { width: 38px; height: 38px; border-radius: 12px; object-fit: cover; }
.nav-checkbox { display: none; }
.nav-toggle {
    width: 46px;
    height: 46px;
    border: 1px solid var(--line);
    border-radius: 16px;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    background: var(--white);
}
.nav-toggle span { width: 20px; height: 2px; background: var(--dark); border-radius: 4px; }
.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
}
.nav-checkbox:checked ~ .site-nav { display: flex; }
.site-nav a {
    padding: 10px 12px;
    border-radius: 14px;
    color: var(--muted);
    font-size: 0.96rem;
    font-weight: 650;
}
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--soft); }

.content-container, .section-container, .page-shell, .footer-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}
.launch-hero {
    position: relative;
    width: min(1240px, calc(100% - 32px));
    margin: 28px auto 0;
    padding: 44px 20px;
    border-radius: 34px;
    background:
        radial-gradient(circle at 82% 12%, rgba(41, 128, 254, 0.20), transparent 32%),
        linear-gradient(135deg, #ffffff 0%, #f4f8ff 68%, #eef5ff 100%);
    border: 1px solid var(--line);
    overflow: hidden;
}
.launch-hero::before {
    content: "";
    position: absolute;
    inset: auto -70px -110px auto;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(41, 128, 254, 0.10);
}
.launch-grid {
    position: relative;
    display: grid;
    gap: 34px;
    align-items: center;
}
.eyebrow, .category-badge, .mini-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: max-content;
    max-width: 100%;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(41, 128, 254, 0.10);
    color: var(--primary);
    font-weight: 750;
    font-size: 0.85rem;
}
.hero-copy .lead, .page-hero .lead { font-size: 1.08rem; max-width: 680px; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    letter-spacing: 0.02em;
    box-shadow: 0 14px 28px rgba(41, 128, 254, 0.26);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover { transform: translateY(-2px); background: var(--primary-dark); box-shadow: 0 18px 36px rgba(41, 128, 254, 0.32); }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 24px 0; }
.security-tags, .floating-tags, .pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.security-tags span, .floating-tags span, .pill-row span {
    border: 1px solid var(--line);
    color: var(--muted);
    background: rgba(255,255,255,0.76);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 0.9rem;
}
.hero-visual, .app-showcase {
    position: relative;
    min-height: 310px;
    display: grid;
    place-items: center;
}
.product-frame {
    position: relative;
    width: min(360px, 88vw);
    padding: 18px;
    border-radius: 32px;
    background: linear-gradient(180deg, #ffffff, #eef5ff);
    border: 1px solid rgba(220, 231, 245, 0.9);
    box-shadow: var(--shadow);
}
.product-frame img { border-radius: 26px; margin: 0 auto; }
.float-card {
    position: absolute;
    padding: 10px 13px;
    border-radius: 18px;
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--line);
    color: var(--dark);
    font-weight: 750;
    box-shadow: 0 12px 30px rgba(21, 32, 51, 0.08);
    font-size: 0.9rem;
}
.float-card.one { top: 8%; left: 0; }
.float-card.two { top: 28%; right: 0; }
.float-card.three { bottom: 20%; left: 4%; }
.float-card.four { bottom: 4%; right: 8%; }

.section { padding: 58px 0; }
.section-heading { max-width: 760px; margin-bottom: 28px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.highlight-bar, .category-grid, .risk-grid, .faq-grid, .cards-grid {
    display: grid;
    gap: 16px;
}
.highlight-card, .category-card, .risk-card, .faq-item, .info-card, .step-card, .note-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 20px;
    box-shadow: 0 12px 30px rgba(21, 32, 51, 0.05);
}
.highlight-card .num, .step-number {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    color: var(--white);
    background: var(--primary);
    font-weight: 850;
    margin-bottom: 14px;
}
.text-link { color: var(--primary); font-weight: 800; }
.gradient-background {
    background: linear-gradient(135deg, #f7faff 0%, #eef5ff 50%, #ffffff 100%);
    border-block: 1px solid rgba(220, 231, 245, 0.72);
}
.launch-card, .big-feature-card {
    display: grid;
    gap: 28px;
    align-items: center;
    padding: 24px;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.big-feature-card + .big-feature-card { margin-top: 26px; }
.big-feature-card .feature-image {
    border-radius: 28px;
    background: linear-gradient(150deg, #eef5ff, #ffffff);
    padding: 18px;
    border: 1px solid var(--line);
}
.big-feature-card .feature-image img { margin: 0 auto; border-radius: 22px; }
.feature-list, .check-list, .clean-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
.feature-list li, .check-list li, .clean-list li {
    position: relative;
    padding-left: 26px;
    color: var(--muted);
}
.feature-list li::before, .check-list li::before, .clean-list li::before {
    content: "";
    width: 9px;
    height: 9px;
    position: absolute;
    left: 3px;
    top: 0.7em;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(41, 128, 254, 0.10);
}
.wallet-feature { background: linear-gradient(135deg, #ffffff, #f7faff); }
.cold-wallet-feature { background: linear-gradient(135deg, #f8fbff, #ffffff); }
.swap-feature { background: linear-gradient(135deg, #ffffff, #f4f8ff); }
.dapp-feature { background: linear-gradient(135deg, #f7faff, #ffffff); }
.feature-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.feature-links a {
    padding: 9px 12px;
    border-radius: 999px;
    background: var(--soft);
    color: var(--primary);
    font-weight: 750;
    font-size: 0.92rem;
}
.process-steps { display: grid; gap: 16px; }
.step-card { position: relative; }
.step-card h3 { margin-bottom: 8px; }
.risk-card { border-left: 4px solid var(--primary); }
.risk-card strong { display: block; color: var(--dark); margin-bottom: 7px; }
.risk-card em { display: block; margin-top: 10px; color: var(--primary); font-style: normal; font-weight: 750; }
.app-category-center .category-card { min-height: 180px; }
.category-card h3 { display: flex; align-items: center; justify-content: space-between; }
.category-card h3::after { content: "→"; color: var(--primary); }
.faq-item h3 { font-size: 1rem; margin-bottom: 8px; }
.cta-section {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto 70px;
    padding: 38px 22px;
    text-align: center;
    border-radius: 34px;
    background: radial-gradient(circle at top, rgba(41,128,254,0.15), transparent 38%), linear-gradient(135deg, #f2f7ff, #ffffff);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.cta-section p { max-width: 660px; margin: 0 auto 24px; }

.page-hero {
    width: min(1180px, calc(100% - 32px));
    margin: 30px auto 0;
    padding: 42px 20px;
    border: 1px solid var(--line);
    border-radius: 32px;
    background: radial-gradient(circle at 86% 10%, rgba(41,128,254,0.18), transparent 34%), linear-gradient(135deg, #ffffff, #f4f8ff);
}
.page-layout {
    width: min(1180px, calc(100% - 32px));
    margin: 30px auto 72px;
    display: grid;
    gap: 24px;
}
.reading-panel {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 24px;
    box-shadow: 0 14px 34px rgba(21,32,51,0.05);
}
.safety-panel {
    background: linear-gradient(180deg, #f7faff, #ffffff);
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 22px;
}
.side-panel { display: grid; gap: 16px; }
.kv-list { display: grid; gap: 12px; margin: 18px 0; }
.kv-list div { padding: 14px; border: 1px solid var(--line); border-radius: 18px; background: #fbfdff; }
.kv-list strong { display: block; color: var(--dark); }
.download-note { margin-top: 22px; }
.download-page-card { max-width: 880px; margin-inline: auto; }
.numbered-list { counter-reset: item; list-style: none; padding: 0; display: grid; gap: 14px; }
.numbered-list li {
    counter-increment: item;
    padding: 16px 16px 16px 58px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fbfdff;
    position: relative;
    color: var(--muted);
}
.numbered-list li::before {
    content: counter(item);
    position: absolute;
    left: 16px;
    top: 16px;
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: var(--primary);
    color: var(--white);
    font-weight: 850;
}

.site-footer {
    background: #f4f8ff;
    border-top: 1px solid var(--line);
    padding: 42px 0 20px;
}
.footer-inner { display: grid; gap: 28px; }
.footer-brand p { max-width: 440px; margin-top: 14px; }
.footer-links { display: grid; gap: 20px; }
.footer-links div { display: grid; gap: 8px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--primary); }
.copyright { width: min(1180px, calc(100% - 32px)); margin: 26px auto 0; color: var(--muted); font-size: 0.9rem; }

@media (min-width: 640px) {
    .highlight-bar, .category-grid, .risk-grid, .faq-grid, .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .page-hero, .reading-panel, .safety-panel { padding: 34px; }
}

@media (min-width: 920px) {
    .nav-toggle { display: none; }
    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
        gap: 2px;
    }
    .site-nav a { font-size: 0.9rem; padding: 8px 10px; }
    .launch-hero { padding: 72px 56px; }
    .launch-grid { grid-template-columns: 1.02fr .98fr; }
    .highlight-bar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .big-feature-card { grid-template-columns: 1fr 0.92fr; padding: 44px; }
    .big-feature-card.reverse .feature-image { order: -1; }
    .category-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .risk-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .page-layout { grid-template-columns: minmax(0, 1fr) 330px; align-items: start; }
    .download-layout, .about-layout, .faq-layout { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1.25fr; }
    .footer-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1120px) {
    .site-nav a { padding: 9px 12px; }
    .process-steps { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .step-card { padding: 18px; }
}