* {
    box-sizing: border-box;
}
:root {
    --primary: #2980FE;
    --primary-deep: #1368de;
    --text: #182338;
    --muted: #657184;
    --soft: #F5F8FC;
    --soft-blue: #EEF6FF;
    --line: #E4EAF2;
    --white: #FFFFFF;
    --shadow: 0 16px 48px rgba(25, 55, 95, .10);
    --radius: 24px;
}
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%, #F6F9FD 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, .88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(228, 234, 242, .86);
}
.header-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.brand,
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: .2px;
}
.brand img,
.footer-brand img {
    width: 38px;
    height: 38px;
    border-radius: 12px;
}
.nav-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
    color: var(--text);
    font-size: 22px;
}
.site-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.site-nav.is-open {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}
.site-nav a {
    padding: 10px 12px;
    color: var(--muted);
    border-radius: 12px;
    font-size: 14px;
    font-weight: 650;
}
.site-nav a.active,
.site-nav a:hover {
    color: var(--primary);
    background: var(--soft-blue);
}
.container,
.section {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}
.section {
    padding: 54px 0;
}
.section-heading {
    max-width: 760px;
    margin-bottom: 26px;
}
.kicker,
.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--soft-blue);
    color: var(--primary);
    border: 1px solid #DCEBFF;
    font-size: 13px;
    font-weight: 750;
}
h1,
h2,
h3 {
    line-height: 1.22;
    margin: 0 0 14px;
    color: var(--text);
}
h1 {
    font-size: clamp(34px, 8vw, 64px);
    letter-spacing: -1.4px;
}
h2 {
    font-size: clamp(26px, 5vw, 42px);
    letter-spacing: -.7px;
}
h3 {
    font-size: 21px;
}
p {
    margin: 0 0 14px;
    color: var(--muted);
}
.lead {
    font-size: 18px;
    color: #46556a;
}
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    background: var(--primary);
    color: #fff;
    border-radius: 999px;
    font-weight: 800;
    box-shadow: 0 12px 28px rgba(41, 128, 254, .28);
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.download-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-deep);
    box-shadow: 0 16px 34px rgba(41, 128, 254, .34);
}
.text-link {
    color: var(--primary);
    font-weight: 750;
}
.app-hero {
    position: relative;
    padding: 56px 0 34px;
    overflow: hidden;
}
.app-hero:before {
    content: "";
    position: absolute;
    width: 520px;
    height: 520px;
    right: -200px;
    top: -180px;
    background: radial-gradient(circle, rgba(41,128,254,.20), rgba(41,128,254,0) 65%);
    pointer-events: none;
}
.hero-grid {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    display: grid;
    gap: 36px;
    align-items: center;
}
.hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    margin: 24px 0;
}
.security-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.security-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: #506074;
    font-size: 13px;
    font-weight: 700;
}
.app-visual {
    position: relative;
    padding: 18px;
    border-radius: 32px;
    background: linear-gradient(145deg, #FFFFFF, #EDF6FF);
    border: 1px solid #DDEBFA;
    box-shadow: var(--shadow);
}
.phone-frame {
    width: min(360px, 82vw);
    margin: 0 auto;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: 0 24px 48px rgba(41, 128, 254, .16);
    background: #fff;
}
.floating-card {
    display: grid;
    gap: 2px;
    padding: 13px 15px;
    border-radius: 18px;
    background: rgba(255, 255, 255, .94);
    border: 1px solid var(--line);
    box-shadow: 0 14px 34px rgba(16, 47, 85, .10);
    color: var(--muted);
    font-size: 13px;
}
.floating-card strong {
    color: var(--text);
    font-size: 14px;
}
.float-list {
    display: grid;
    gap: 12px;
    margin-top: 14px;
}
.ability-bar {
    width: min(1180px, calc(100% - 32px));
    margin: 16px auto 0;
    display: grid;
    gap: 12px;
}
.ability-item,
.feature-card,
.info-card,
.faq-item,
.risk-card,
.category-card,
.step-card,
.article-card,
.check-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 8px 26px rgba(38, 70, 110, .06);
}
.ability-item {
    padding: 18px;
    border-top: 3px solid var(--primary);
}
.ability-item h3,
.feature-card h3,
.info-card h3,
.risk-card h3,
.category-card h3,
.step-card h3,
.article-card h3,
.check-card h3 {
    margin-bottom: 8px;
}
.feature-showcase {
    display: grid;
    gap: 18px;
}
.feature-card {
    padding: 22px;
    overflow: hidden;
    display: grid;
    gap: 16px;
}
.feature-card img {
    border-radius: 22px;
    background: var(--soft);
    border: 1px solid var(--line);
}
.product-section {
    padding: 64px 0;
}
.product-panel,
.cold-wallet-panel,
.swap-panel,
.dapp-panel {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    display: grid;
    gap: 28px;
    align-items: center;
    padding: 24px;
    border-radius: 32px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.product-panel,
.swap-panel,
.dapp-panel {
    background: var(--white);
}
.cold-wallet-panel {
    background: linear-gradient(145deg, #F4F8FD, #EFF7FF);
}
.panel-image img,
.article-visual img {
    border-radius: 28px;
    border: 1px solid var(--line);
    background: #fff;
}
.bullet-list,
.check-list {
    padding: 0;
    margin: 18px 0 0;
    list-style: none;
    display: grid;
    gap: 10px;
}
.bullet-list li,
.check-list li {
    position: relative;
    padding-left: 28px;
    color: #4c5b70;
}
.bullet-list li:before,
.check-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: .7em;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(41,128,254,.12);
}
.panel-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
}
.panel-links a {
    color: var(--primary);
    background: var(--soft-blue);
    border: 1px solid #DCEBFF;
    border-radius: 999px;
    padding: 8px 12px;
    font-weight: 700;
    font-size: 14px;
}
.process-steps {
    display: grid;
    gap: 14px;
}
.step-card {
    padding: 18px;
    position: relative;
}
.step-num {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--primary);
    color: #fff;
    font-weight: 850;
    margin-bottom: 10px;
}
.risk-grid,
.ecosystem-grid,
.category-grid,
.info-grid,
.article-grid,
.check-grid {
    display: grid;
    gap: 16px;
}
.risk-card {
    padding: 18px;
    border-top: 4px solid var(--primary);
}
.category-card,
.info-card,
.article-card,
.check-card {
    padding: 20px;
}
.category-card a,
.step-card a,
.risk-card a,
.feature-card a,
.info-card a {
    color: var(--primary);
    font-weight: 800;
}
.faq-list {
    display: grid;
    gap: 14px;
}
.faq-item {
    padding: 20px;
}
.faq-item h3 {
    font-size: 18px;
}
.cta-section {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto 64px;
    padding: 42px 22px;
    text-align: center;
    border-radius: 34px;
    background: linear-gradient(135deg, #EEF6FF, #FFFFFF 58%, #F5F8FC);
    border: 1px solid #DDEBFA;
    box-shadow: var(--shadow);
}
.page-hero {
    padding: 54px 0 20px;
}
.page-hero-inner {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
}
.page-layout {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 26px 0 64px;
    display: grid;
    gap: 22px;
}
.content-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 24px;
    box-shadow: var(--shadow);
}
.aside-card {
    background: linear-gradient(180deg, #F0F7FF, #FFFFFF);
    border: 1px solid #DCEBFF;
    border-radius: 26px;
    padding: 20px;
    height: fit-content;
}
.aside-card ul {
    padding-left: 18px;
    color: var(--muted);
}
.inline-note {
    margin: 18px 0;
    padding: 16px 18px;
    border-left: 4px solid var(--primary);
    border-radius: 18px;
    background: var(--soft-blue);
    color: #4c5b70;
}
.timeline {
    counter-reset: item;
    display: grid;
    gap: 12px;
}
.timeline li {
    list-style: none;
    padding: 16px;
    background: var(--soft);
    border-radius: 18px;
    border: 1px solid var(--line);
    color: var(--muted);
}
.timeline li strong {
    display: block;
    color: var(--text);
    margin-bottom: 4px;
}
.download-row {
    margin-top: 22px;
}
.site-footer {
    background: #F3F6FA;
    border-top: 1px solid var(--line);
}
.footer-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 34px 0;
    display: grid;
    gap: 22px;
}
.footer-inner p {
    max-width: 660px;
}
.footer-links {
    display: grid;
    gap: 10px;
}
.footer-links a {
    color: var(--muted);
    font-weight: 700;
}
.footer-bottom {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 16px 0 28px;
    color: #7a8696;
    font-size: 13px;
}
.gradient-bg {
    background: linear-gradient(135deg, #F7FAFF, #EEF6FF);
}
@media (min-width: 640px) {
    .ability-bar,
    .category-grid,
    .info-grid,
    .check-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .risk-grid,
    .ecosystem-grid,
    .feature-showcase,
    .article-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}
@media (min-width: 920px) {
    .nav-toggle {
        display: none;
    }
    .site-nav {
        position: static;
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }
    .site-nav a {
        font-size: 14px;
    }
    .hero-grid {
        grid-template-columns: 1.02fr .98fr;
    }
    .float-list {
        position: absolute;
        inset: auto 18px 18px auto;
        width: 220px;
    }
    .float-list .floating-card:nth-child(1) {
        transform: translate(-210px, -210px);
    }
    .float-list .floating-card:nth-child(2) {
        transform: translate(-250px, -80px);
    }
    .float-list .floating-card:nth-child(3) {
        transform: translate(20px, -150px);
    }
    .float-list .floating-card:nth-child(4) {
        transform: translate(-20px, -20px);
    }
    .ability-bar {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }
    .feature-showcase {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .product-panel,
    .cold-wallet-panel,
    .swap-panel,
    .dapp-panel {
        grid-template-columns: 1fr 1fr;
        padding: 36px;
    }
    .cold-wallet-panel .panel-copy,
    .dapp-panel .panel-copy {
        order: 2;
    }
    .cold-wallet-panel .panel-image,
    .dapp-panel .panel-image {
        order: 1;
    }
    .process-steps {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .risk-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .ecosystem-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .page-layout {
        grid-template-columns: minmax(0, 1fr) 320px;
    }
    .footer-inner {
        grid-template-columns: 1fr 280px;
        align-items: start;
    }
}
@media (min-width: 1180px) {
    .app-hero {
        padding-top: 78px;
    }
}