:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --blue-gray: #F5F8FC;
    --white: #FFFFFF;
    --text: #1F2937;
    --muted: #667085;
    --line: #E5EAF1;
    --deep: #111827;
    --shadow: 0 18px 50px rgba(41, 128, 254, .10);
    --radius: 24px;
}
* { 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%; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.section { padding: 56px 0; }
.section-tight { padding: 36px 0; }
.section-head { margin-bottom: 24px; }
.section-eyebrow, .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 700;
    font-size: 13px;
}
.section-head h2, .page-title h1 { margin: 12px 0 10px; color: var(--deep); line-height: 1.18; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); }
.section-head p, .page-title p { color: var(--muted); max-width: 760px; margin: 0; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255,255,255,.88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(229,234,241,.9);
}
.header-inner { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo, .footer-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); }
.logo img, .footer-logo img { width: 36px; height: 36px; object-fit: contain; }
.nav-toggle {
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--deep);
    width: 42px;
    height: 42px;
    border-radius: 14px;
    font-size: 20px;
}
.main-nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    padding: 12px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.main-nav.open { display: grid; gap: 6px; }
.main-nav a { padding: 10px 12px; border-radius: 12px; color: var(--muted); font-size: 14px; font-weight: 650; }
.main-nav a.active, .main-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.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;
    border: 1px solid var(--primary);
    box-shadow: 0 12px 28px rgba(41,128,254,.24);
    transition: transform .2s ease, box-shadow .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(41,128,254,.30); }
.launch-hero {
    position: relative;
    padding: 64px 0 42px;
    overflow: hidden;
}
.launch-hero:before {
    content: "";
    position: absolute;
    inset: -140px -80px auto auto;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(41,128,254,.20), rgba(41,128,254,0) 65%);
    pointer-events: none;
}
.launch-hero:after {
    content: "";
    position: absolute;
    left: -140px;
    bottom: -200px;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(41,128,254,.13), rgba(41,128,254,0) 66%);
}
.launch-grid { position: relative; display: grid; gap: 32px; align-items: center; }
.hero-copy h1 { font-size: clamp(40px, 9vw, 78px); line-height: 1.02; margin: 16px 0; color: var(--deep); letter-spacing: -1.8px; }
.hero-copy p { color: var(--muted); font-size: 17px; max-width: 680px; }
.hero-actions { margin: 24px 0 18px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.safe-tags, .floating-tags, .pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.safe-tags span, .floating-tags span, .pill-row span {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.9);
    color: #475467;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
}
.hero-visual { position: relative; min-height: 360px; display: grid; place-items: center; }
.app-showcase {
    position: relative;
    width: min(430px, 86vw);
    margin: 0 auto;
    padding: 28px;
    border-radius: 36px;
    background: linear-gradient(145deg, rgba(255,255,255,.95), rgba(235,244,255,.8));
    border: 1px solid rgba(229,234,241,.9);
    box-shadow: var(--shadow);
}
.app-showcase img { max-height: 520px; margin: 0 auto; object-fit: contain; filter: drop-shadow(0 24px 34px rgba(16,24,40,.12)); }
.float-card {
    position: absolute;
    display: none;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 16px;
    background: rgba(255,255,255,.94);
    border: 1px solid var(--line);
    box-shadow: 0 14px 35px rgba(16,24,40,.12);
    color: var(--deep);
    font-size: 13px;
    font-weight: 800;
}
.float-card em { width: 9px; height: 9px; border-radius: 50%; background: var(--primary); display: inline-block; }
.float-one { top: 48px; left: -22px; }
.float-two { top: 36%; right: -28px; }
.float-three { bottom: 90px; left: -12px; }
.float-four { bottom: 30px; right: 18px; }
.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, .side-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 10px 34px rgba(16,24,40,.05);
}
.highlight-card b, .category-card b { display: block; color: var(--primary); font-size: 13px; margin-bottom: 8px; }
.highlight-card h3, .category-card h3, .risk-card h3, .faq-item h3, .info-card h3 { margin: 0 0 8px; color: var(--deep); }
.highlight-card p, .category-card p, .risk-card p, .faq-item p, .info-card p, .step-card p, .side-card p { margin: 0; color: var(--muted); }
.text-link { display: inline-flex; margin-top: 12px; color: var(--primary); font-weight: 800; }
.big-feature-card {
    overflow: hidden;
    border-radius: 32px;
    border: 1px solid var(--line);
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 24px;
    display: grid;
    gap: 24px;
    align-items: center;
}
.big-feature-card.soft { background: linear-gradient(135deg, #F7FAFF, #FFFFFF); }
.feature-media {
    display: grid;
    place-items: center;
    border-radius: 26px;
    background: linear-gradient(155deg, #F2F7FF, #FFFFFF);
    border: 1px solid var(--line);
    min-height: 260px;
    padding: 22px;
}
.feature-media img { max-height: 360px; object-fit: contain; }
.feature-content h2 { font-size: clamp(28px, 5vw, 48px); line-height: 1.12; margin: 10px 0 12px; color: var(--deep); }
.feature-content p { color: var(--muted); margin: 0 0 18px; }
.feature-list { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 26px; color: #485466; }
.feature-list li:before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); position: absolute; left: 0; top: .65em; }
.wallet-feature {}
.cold-wallet-feature {}
.swap-feature {}
.dapp-feature {}
.gradient-background {
    background: linear-gradient(135deg, #FFFFFF 0%, #F2F7FF 100%);
}
.safety-panel {
    background: linear-gradient(135deg, #F5F9FF, #FFFFFF);
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 24px;
}
.process-steps { display: grid; gap: 14px; counter-reset: steps; }
.step-card { position: relative; padding-left: 74px; min-height: 110px; }
.step-card:before {
    counter-increment: steps;
    content: counter(steps, decimal-leading-zero);
    position: absolute;
    left: 20px;
    top: 20px;
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    font-size: 13px;
}
.risk-card { border-left: 4px solid var(--primary); }
.risk-card .advice { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line); color: #475467; font-size: 14px; }
.app-category-center { background: var(--blue-gray); border-radius: 34px; padding: 24px; border: 1px solid var(--line); }
.cta-section {
    margin: 40px 0 70px;
    padding: 42px 24px;
    border-radius: 34px;
    text-align: center;
    background: linear-gradient(135deg, #EAF3FF, #FFFFFF);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.cta-section h2 { margin: 0 0 12px; font-size: clamp(30px, 5vw, 48px); color: var(--deep); }
.cta-section p { margin: 0 auto 22px; color: var(--muted); max-width: 700px; }
.page-hero { padding: 54px 0 24px; }
.page-title { max-width: 860px; }
.page-title h1 { font-size: clamp(34px, 6vw, 62px); letter-spacing: -.8px; }
.content-layout { display: grid; gap: 24px; align-items: start; padding-bottom: 64px; }
.article-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 24px;
    box-shadow: var(--shadow);
}
.article-card h2 { color: var(--deep); margin: 22px 0 10px; }
.article-card p { color: var(--muted); }
.check-list, .number-list { margin: 18px 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.check-list li, .number-list li {
    border: 1px solid var(--line);
    background: var(--blue-gray);
    border-radius: 18px;
    padding: 14px 16px;
    color: #475467;
}
.number-list { counter-reset: innerSteps; }
.number-list li { position: relative; padding-left: 54px; }
.number-list li:before {
    counter-increment: innerSteps;
    content: counter(innerSteps);
    position: absolute;
    left: 16px;
    top: 14px;
    width: 26px;
    height: 26px;
    border-radius: 9px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    display: grid;
    place-items: center;
    font-size: 12px;
}
.page-download { margin-top: 24px; }
.download-panel { display: grid; gap: 18px; }
.site-footer { background: #F7FAFF; border-top: 1px solid var(--line); padding: 44px 0 22px; }
.footer-grid { display: grid; gap: 24px; }
.footer-grid p { color: var(--muted); margin: 12px 0 0; }
.footer-grid h3 { margin: 0 0 10px; color: var(--deep); font-size: 16px; }
.footer-grid a:not(.footer-logo) { display: block; color: var(--muted); padding: 4px 0; }
.footer-grid a:hover { color: var(--primary); }
.footer-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
@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)); }
}
@media (min-width: 900px) {
    .nav-toggle { display: none; }
    .main-nav { position: static; display: flex; align-items: center; gap: 2px; padding: 0; border: 0; box-shadow: none; background: transparent; }
    .main-nav a { font-size: 13px; padding: 9px 10px; }
    .launch-grid { grid-template-columns: 1.02fr .98fr; gap: 52px; }
    .launch-hero { padding: 96px 0 66px; }
    .float-card { display: inline-flex; }
    .highlight-bar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .big-feature-card { grid-template-columns: 1fr 1fr; padding: 36px; }
    .big-feature-card.reverse .feature-media { 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)); }
    .content-layout { grid-template-columns: minmax(0, 1fr) 320px; }
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
    .footer-bottom { flex-direction: row; justify-content: space-between; }
}
@media (min-width: 1120px) {
    .main-nav a { padding: 9px 12px; }
    .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}