:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-soft-2: #F4F8FF;
    --white: #FFFFFF;
    --light: #F6F8FB;
    --line: #E3EAF2;
    --text: #263342;
    --muted: #66758A;
    --deep: #142033;
    --shadow: 0 18px 48px rgba(41, 128, 254, 0.11);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #ffffff 0%, #f7fbff 38%, #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: 40;
    background: rgba(255,255,255,0.92);
    border-bottom: 1px solid rgba(227,234,242,0.9);
    backdrop-filter: blur(18px);
}
.header-inner, .container, .footer-inner {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}
.header-inner {
    min-height: 70px;
    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(--deep);
    white-space: nowrap;
}
.logo img, .footer-logo img { width: 38px; height: 38px; object-fit: contain; }
.site-nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 74px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 12px;
    box-shadow: var(--shadow);
}
.site-nav.open { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.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); }
.nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.nav-toggle span { width: 18px; height: 2px; border-radius: 4px; background: var(--deep); }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    letter-spacing: 0.02em;
    box-shadow: 0 14px 30px rgba(41,128,254,0.24);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(41,128,254,0.30); }
main { display: block; }
.launch-hero {
    position: relative;
    width: min(1180px, calc(100% - 32px));
    margin: 30px auto 20px;
    padding: 34px 20px;
    overflow: hidden;
    border: 1px solid rgba(41,128,254,0.12);
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at 80% 10%, rgba(41,128,254,0.18), transparent 30%),
        linear-gradient(135deg, #ffffff 0%, #f2f8ff 64%, #ffffff 100%);
    box-shadow: var(--shadow);
}
.launch-hero::before {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(41,128,254,0.08);
    left: -120px;
    bottom: -120px;
}
.hero-content, .hero-visual { position: relative; z-index: 2; }
.eyebrow, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 800;
    font-size: 13px;
}
.launch-hero h1, .page-hero h1 {
    margin: 18px 0 14px;
    color: var(--deep);
    font-size: clamp(36px, 8vw, 72px);
    line-height: 1.08;
    letter-spacing: -0.05em;
}
.launch-hero p, .page-hero p { color: var(--muted); font-size: 17px; margin: 0 0 22px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin: 24px 0; }
.security-tags, .floating-tags, .mini-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.security-tags span, .floating-tags span, .mini-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(255,255,255,0.72);
    border: 1px solid var(--line);
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
}
.hero-visual {
    margin-top: 28px;
    display: grid;
    place-items: center;
}
.app-showcase {
    position: relative;
    width: min(430px, 100%);
    padding: 18px;
    border-radius: 34px;
    background: rgba(255,255,255,0.62);
    border: 1px solid rgba(255,255,255,0.9);
    box-shadow: 0 24px 70px rgba(35, 75, 126, 0.14);
}
.app-showcase img { margin: auto; max-height: 520px; object-fit: contain; }
.float-card {
    position: static;
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 16px;
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--line);
    color: var(--deep);
    font-size: 13px;
    font-weight: 800;
    box-shadow: 0 12px 28px rgba(19, 42, 75, 0.10);
}
.float-card b { color: var(--primary); }
.section {
    width: min(1120px, calc(100% - 32px));
    margin: 56px auto;
}
.section-heading { margin-bottom: 22px; }
.section-heading h2 {
    margin: 0 0 10px;
    color: var(--deep);
    font-size: clamp(28px, 5vw, 44px);
    line-height: 1.18;
    letter-spacing: -0.03em;
}
.section-heading p { margin: 0; color: var(--muted); max-width: 760px; }
.highlight-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.highlight-item, .category-card, .risk-card, .faq-item, .step-card, .info-card {
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(20,32,51,0.04);
}
.highlight-item { padding: 18px; }
.highlight-item .num, .step-number {
    color: var(--primary);
    font-weight: 900;
    font-size: 13px;
    letter-spacing: .08em;
}
.highlight-item h3, .category-card h3, .risk-card h3, .step-card h3 { margin: 8px 0 8px; color: var(--deep); }
.highlight-item p, .category-card p, .risk-card p, .step-card p, .info-card p { color: var(--muted); margin: 0 0 10px; }
.text-link { color: var(--primary); font-weight: 800; }
.big-feature-card {
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: var(--white);
    box-shadow: var(--shadow);
    overflow: hidden;
    padding: 22px;
    display: grid;
    gap: 22px;
}
.big-feature-card.alt { background: linear-gradient(135deg, #ffffff, #f3f8ff); }
.feature-copy h2 { margin: 10px 0 12px; color: var(--deep); font-size: clamp(28px, 5vw, 44px); line-height: 1.16; }
.feature-copy p { color: var(--muted); margin: 0 0 14px; }
.feature-list, .clean-list { padding: 0; margin: 18px 0; list-style: none; display: grid; gap: 10px; }
.feature-list li, .clean-list li {
    position: relative;
    padding-left: 26px;
    color: var(--text);
}
.feature-list li::before, .clean-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .75em;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(41,128,254,.10);
}
.feature-media {
    min-height: 230px;
    border-radius: 26px;
    background: linear-gradient(145deg, #eef6ff, #ffffff);
    border: 1px solid rgba(41,128,254,0.12);
    display: grid;
    place-items: center;
    padding: 18px;
}
.feature-media img { max-height: 360px; object-fit: contain; }
.dapp-feature .feature-media { align-content: center; }
.process-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.step-card { padding: 18px; position: relative; overflow: hidden; }
.step-card::after {
    content: "";
    position: absolute;
    inset: auto 18px 0 auto;
    width: 52px;
    height: 4px;
    border-radius: 999px;
    background: var(--primary);
    opacity: .22;
}
.risk-grid, .category-grid, .faq-grid, .info-grid, .checklist-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.risk-card { padding: 18px; border-left: 4px solid var(--primary); }
.risk-card strong { color: var(--deep); display: block; margin-bottom: 4px; }
.category-card { padding: 18px; min-height: 180px; display: flex; flex-direction: column; justify-content: space-between; }
.category-card .icon-dot {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--primary-soft);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 900;
}
.faq-item { padding: 18px; }
.faq-item h3 { margin: 0 0 8px; color: var(--deep); font-size: 18px; }
.faq-item p { margin: 0; color: var(--muted); }
.cta-section {
    width: min(1120px, calc(100% - 32px));
    margin: 64px auto;
    padding: 34px 20px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(41,128,254,0.16);
    background: linear-gradient(135deg, #eef6ff, #ffffff 58%, #f5f9ff);
    text-align: center;
    box-shadow: var(--shadow);
}
.cta-section h2 { color: var(--deep); margin: 0 0 12px; font-size: clamp(28px, 5vw, 44px); }
.cta-section p { color: var(--muted); margin: 0 auto 22px; max-width: 720px; }
.page-main { padding-bottom: 20px; }
.page-hero {
    width: min(1060px, calc(100% - 32px));
    margin: 30px auto 28px;
    padding: 34px 22px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(41,128,254,0.14);
    background: radial-gradient(circle at 88% 0%, rgba(41,128,254,0.15), transparent 30%), linear-gradient(135deg,#ffffff,#f4f8ff);
    box-shadow: var(--shadow);
}
.slim-hero h1 { font-size: clamp(34px, 7vw, 58px); }
.content-layout {
    width: min(1060px, calc(100% - 32px));
    margin: 0 auto 60px;
    display: grid;
    gap: 18px;
}
.article-card, .side-panel {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--white);
    padding: 22px;
    box-shadow: 0 10px 30px rgba(20,32,51,0.04);
}
.article-card h2, .side-panel h2 { color: var(--deep); margin: 0 0 12px; }
.article-card h3, .side-panel h3 { color: var(--deep); margin: 22px 0 8px; }
.article-card p, .side-panel p { color: var(--muted); margin: 0 0 14px; }
.notice-box {
    padding: 18px;
    border-radius: 20px;
    background: var(--primary-soft-2);
    border: 1px solid rgba(41,128,254,0.16);
    color: var(--text);
    margin: 18px 0;
}
.info-card { padding: 18px; }
.info-card h3 { margin: 0 0 8px; color: var(--deep); }
.download-steps { counter-reset: step; display: grid; gap: 14px; margin: 24px 0; }
.download-step {
    counter-increment: step;
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 12px;
    align-items: start;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--white);
}
.download-step::before {
    content: counter(step);
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
}
.download-step h3 { margin: 0 0 4px; color: var(--deep); }
.download-step p { margin: 0; color: var(--muted); }
.site-footer {
    margin-top: 70px;
    padding: 46px 0 20px;
    background: #F4F7FB;
    border-top: 1px solid var(--line);
}
.footer-inner { display: grid; gap: 24px; }
.footer-brand p { color: var(--muted); max-width: 420px; }
.footer-links { display: grid; grid-template-columns: 1fr; gap: 22px; }
.footer-links h3 { margin: 0 0 10px; color: var(--deep); font-size: 16px; }
.footer-links a { display: block; color: var(--muted); margin: 7px 0; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { width: min(1120px, calc(100% - 32px)); margin: 26px auto 0; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
@media (min-width: 700px) {
    .highlight-bar { grid-template-columns: repeat(2, 1fr); }
    .risk-grid, .faq-grid, .info-grid, .checklist-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .footer-links { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 980px) {
    .nav-toggle { display: none; }
    .site-nav {
        display: flex;
        position: static;
        align-items: center;
        gap: 3px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }
    .site-nav a { padding: 8px 10px; }
    .launch-hero {
        display: grid;
        grid-template-columns: minmax(0, 1.04fr) minmax(380px, .96fr);
        align-items: center;
        gap: 34px;
        padding: 58px;
        min-height: 650px;
    }
    .hero-visual { margin-top: 0; }
    .float-card { position: absolute; margin-top: 0; }
    .float-card.one { top: 12%; left: -12px; }
    .float-card.two { top: 46%; right: -16px; }
    .float-card.three { bottom: 14%; left: -18px; }
    .float-card.four { bottom: 26%; right: 10px; }
    .highlight-bar { grid-template-columns: repeat(3, 1fr); }
    .big-feature-card { grid-template-columns: 1fr 1fr; align-items: center; padding: 36px; }
    .big-feature-card.reverse .feature-copy { order: 2; }
    .big-feature-card.reverse .feature-media { order: 1; }
    .category-grid { grid-template-columns: repeat(4, 1fr); }
    .risk-grid { grid-template-columns: repeat(3, 1fr); }
    .faq-grid { grid-template-columns: repeat(2, 1fr); }
    .content-layout { grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
    .side-panel { position: sticky; top: 94px; }
    .process-steps { grid-template-columns: repeat(3, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1.55fr; }
}
@media (min-width: 1160px) {
    .site-nav a { padding: 9px 12px; }
}