* {
    box-sizing: border-box;
}
:root {
    --primary: #2980FE;
    --primary-soft: #EDF5FF;
    --ink: #1F2937;
    --muted: #667085;
    --light: #F5F8FC;
    --line: #E5EAF1;
    --card: #FFFFFF;
    --deep: #344054;
    --shadow: 0 18px 50px rgba(41, 128, 254, .10);
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    color: var(--ink);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 46%, #FFFFFF 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    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: 20;
    background: rgba(255, 255, 255, .86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(229, 234, 241, .88);
}
.header-inner, .footer-inner, .page-shell, .home-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}
.header-inner {
    min-height: 68px;
    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(--ink);
    letter-spacing: .02em;
}
.logo img {
    width: 38px;
    height: 38px;
    object-fit: contain;
}
.main-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
    box-shadow: var(--shadow);
}
.main-nav.is-open {
    display: grid;
    gap: 6px;
}
.main-nav a {
    padding: 10px 12px;
    border-radius: 14px;
    color: var(--deep);
    font-size: 15px;
}
.main-nav a.active, .main-nav a:hover {
    color: var(--primary);
    background: var(--primary-soft);
}
.nav-toggle {
    width: 42px;
    height: 42px;
    display: inline-grid;
    place-content: center;
    gap: 5px;
    background: var(--primary-soft);
    border: 1px solid #D8E8FF;
    border-radius: 14px;
}
.nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 99px;
}
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    border: 1px solid var(--primary);
    box-shadow: 0 12px 30px rgba(41, 128, 254, .22);
    transition: transform .2s ease, box-shadow .2s ease;
    cursor: pointer;
}
.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 38px rgba(41, 128, 254, .28);
}
.home-shell, .page-shell {
    padding: 34px 0 72px;
}
.launch-hero {
    position: relative;
    display: grid;
    gap: 28px;
    padding: 34px 22px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 32px;
    background:
        radial-gradient(circle at 88% 12%, rgba(41, 128, 254, .20), transparent 30%),
        linear-gradient(145deg, #FFFFFF 0%, #F3F8FF 100%);
    box-shadow: var(--shadow);
}
.launch-hero::before {
    content: "";
    position: absolute;
    inset: auto -60px -100px auto;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(41, 128, 254, .10);
}
.hero-copy, .hero-visual {
    position: relative;
    z-index: 1;
}
.eyebrow, .panel-label {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .04em;
}
h1, h2, h3, p {
    margin-top: 0;
}
h1 {
    margin-bottom: 16px;
    font-size: clamp(36px, 8vw, 72px);
    line-height: 1.05;
    letter-spacing: -.05em;
}
h2 {
    margin-bottom: 12px;
    font-size: clamp(26px, 5vw, 42px);
    line-height: 1.15;
    letter-spacing: -.03em;
}
h3 {
    margin-bottom: 8px;
    font-size: 20px;
    line-height: 1.35;
}
p {
    color: var(--muted);
}
.hero-copy > p {
    max-width: 680px;
    font-size: 17px;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin: 24px 0;
}
.safety-tags, .floating-tags, .mini-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.safety-tags span, .floating-tags span, .mini-tags span {
    display: inline-flex;
    align-items: center;
    border: 1px solid #DDEBFF;
    background: rgba(255,255,255,.78);
    color: var(--deep);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 700;
}
.hero-visual {
    min-height: 320px;
    display: grid;
    place-items: center;
}
.app-showcase {
    position: relative;
    width: min(420px, 100%);
    margin: 0 auto;
}
.app-showcase img {
    margin: 0 auto;
    max-height: 520px;
    object-fit: contain;
    filter: drop-shadow(0 28px 55px rgba(41, 128, 254, .18));
}
.floating-tags {
    position: static;
    justify-content: center;
    margin-top: 16px;
}
.highlight-bar, .category-grid, .risk-grid, .faq-grid, .check-grid, .feature-grid {
    display: grid;
    gap: 14px;
}
.highlight-bar {
    margin: 26px 0;
    grid-template-columns: 1fr;
}
.highlight-card, .category-card, .risk-card, .faq-item, .check-card, .article-card, .side-panel, .related-panel, .download-panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: 0 12px 30px rgba(31, 41, 55, .04);
}
.highlight-card {
    padding: 18px;
}
.highlight-card span, .category-card span, .risk-card span {
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
}
.highlight-card a, .feature-link, .related-links a, .text-link {
    color: var(--primary);
    font-weight: 800;
}
.section-heading {
    margin: 52px 0 20px;
    max-width: 780px;
}
.section-heading span {
    color: var(--primary);
    font-weight: 800;
}
.big-feature-card {
    display: grid;
    gap: 22px;
    align-items: center;
    margin: 22px 0;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 32px;
    background: var(--card);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.big-feature-card.reverse .feature-media {
    order: -1;
}
.feature-copy ul, .download-steps, .clean-list {
    margin: 18px 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}
.feature-copy li, .download-steps li, .clean-list li {
    position: relative;
    padding-left: 24px;
    color: var(--deep);
}
.feature-copy li::before, .download-steps li::before, .clean-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
}
.feature-media {
    border-radius: 28px;
    background: linear-gradient(145deg, #F5F9FF, #EAF3FF);
    padding: 22px;
    min-height: 260px;
    display: grid;
    place-items: center;
}
.feature-media img {
    max-height: 420px;
    object-fit: contain;
}
.wallet-feature {
    background: linear-gradient(135deg, #FFFFFF 0%, #F7FBFF 100%);
}
.cold-wallet-feature {
    background: linear-gradient(135deg, #F4F8FC 0%, #FFFFFF 100%);
}
.swap-feature {
    background: linear-gradient(135deg, #FFFFFF 0%, #EEF6FF 100%);
}
.dapp-feature {
    background: linear-gradient(135deg, #F7FAFF 0%, #FFFFFF 100%);
}
.process-steps {
    display: grid;
    gap: 14px;
    counter-reset: step;
}
.step-card {
    position: relative;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: #fff;
}
.step-card b, .check-card b {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    margin-bottom: 14px;
    border-radius: 14px;
    background: var(--primary);
    color: #fff;
}
.risk-grid {
    grid-template-columns: 1fr;
}
.risk-card {
    padding: 20px;
    border-left: 4px solid var(--primary);
}
.app-category-center {
    padding: 22px;
    border-radius: 32px;
    background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 100%);
    border: 1px solid var(--line);
}
.category-grid {
    grid-template-columns: 1fr;
}
.category-card {
    padding: 20px;
}
.faq-grid {
    grid-template-columns: 1fr;
}
.faq-item {
    padding: 18px;
}
.cta-section, .page-hero {
    text-align: center;
    border: 1px solid var(--line);
    border-radius: 32px;
    background: linear-gradient(135deg, #FFFFFF, #EEF6FF);
    box-shadow: var(--shadow);
}
.cta-section {
    margin-top: 36px;
    padding: 34px 22px;
}
.cta-section p, .page-hero p {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}
.compact-hero {
    padding: 44px 22px;
    margin-bottom: 24px;
}
.compact-hero h1 {
    font-size: clamp(34px, 6vw, 58px);
}
.article-grid {
    display: grid;
    gap: 18px;
    align-items: start;
}
.article-card, .side-panel, .related-panel, .download-panel {
    padding: 22px;
}
.side-panel {
    background: linear-gradient(180deg, #FFFFFF 0%, #F1F7FF 100%);
}
.guide-section {
    margin-top: 24px;
}
.check-grid {
    grid-template-columns: 1fr;
}
.check-card {
    padding: 20px;
}
.related-panel {
    margin-top: 24px;
}
.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.related-links a {
    padding: 10px 14px;
    border: 1px solid #DCEBFF;
    border-radius: 999px;
    background: var(--primary-soft);
}
.download-page .download-panel {
    margin-top: 24px;
}
.download-steps {
    counter-reset: download;
}
.download-steps li {
    padding-left: 34px;
}
.download-steps li::before {
    content: counter(download);
    counter-increment: download;
    top: 0;
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 12px;
}
.site-footer {
    border-top: 1px solid var(--line);
    background: #fff;
}
.footer-inner {
    padding: 34px 0;
    display: grid;
    gap: 20px;
}
.footer-logo {
    color: var(--primary);
    font-size: 20px;
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-links a {
    color: var(--deep);
    background: var(--light);
    padding: 8px 12px;
    border-radius: 999px;
}
@media (min-width: 640px) {
    .highlight-bar, .category-grid, .risk-grid, .faq-grid, .check-grid, .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    .compact-hero {
        padding: 58px 34px;
    }
}
@media (min-width: 900px) {
    .nav-toggle {
        display: none;
    }
    .main-nav {
        position: static;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 4px;
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
    }
    .main-nav a {
        font-size: 14px;
        padding: 8px 10px;
    }
    .launch-hero {
        grid-template-columns: 1.05fr .95fr;
        padding: 58px;
        min-height: 680px;
    }
    .hero-copy {
        align-self: center;
    }
    .floating-tags {
        position: absolute;
        inset: 6% -3% auto auto;
        width: 220px;
        justify-content: flex-start;
    }
    .highlight-bar {
        grid-template-columns: repeat(3, 1fr);
    }
    .big-feature-card {
        grid-template-columns: 1fr 1fr;
        padding: 40px;
    }
    .big-feature-card.reverse .feature-media {
        order: 2;
    }
    .process-steps {
        grid-template-columns: repeat(3, 1fr);
    }
    .risk-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-grid {
        grid-template-columns: minmax(0, 1fr) 340px;
    }
    .feature-page.safety-layout .article-grid, .feature-page.recovery-layout .article-grid {
        grid-template-columns: 340px minmax(0, 1fr);
    }
    .feature-page.safety-layout .article-card, .feature-page.recovery-layout .article-card {
        order: 2;
    }
    .check-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .footer-inner {
        grid-template-columns: 1fr auto;
        align-items: center;
    }
}
@media (min-width: 1100px) {
    .main-nav a {
        font-size: 15px;
        padding: 9px 12px;
    }
}