:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-ghost: #F5F9FF;
    --white: #ffffff;
    --bg: #F7FAFE;
    --bg-soft: #F1F6FC;
    --line: #E3EAF3;
    --text: #1E293B;
    --muted: #64748B;
    --deep: #0F172A;
    --shadow: 0 18px 50px rgba(41, 128, 254, 0.10);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFE 42%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.82);
}

.nav-wrap {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--deep);
    letter-spacing: -0.02em;
}

.logo {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 12px;
}

.nav-toggle {
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--deep);
    border-radius: 14px;
    width: 44px;
    height: 44px;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.site-nav.is-open {
    display: flex;
}

.site-nav a {
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--muted);
    font-weight: 700;
    font-size: 14px;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--primary);
    background: var(--primary-soft);
}

.container,
.content-container {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
}

.narrow-container {
    width: min(100% - 32px, 880px);
    margin: 0 auto;
}

.section {
    padding: 64px 0;
}

.section-head {
    margin-bottom: 24px;
}

.section-kicker,
.category-badge,
.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, 0.14);
    border-radius: 999px;
    padding: 7px 12px;
    font-size: 13px;
    font-weight: 800;
}

h1,
h2,
h3 {
    color: var(--deep);
    line-height: 1.18;
    letter-spacing: -0.04em;
    margin: 0 0 14px;
}

h1 {
    font-size: clamp(36px, 10vw, 72px);
}

h2 {
    font-size: clamp(28px, 6vw, 46px);
}

h3 {
    font-size: 21px;
}

p {
    margin: 0 0 16px;
    color: var(--muted);
}

.launch-hero {
    position: relative;
    overflow: hidden;
    padding: 64px 0 46px;
    background:
        radial-gradient(circle at 78% 18%, rgba(41, 128, 254, 0.18), transparent 34%),
        radial-gradient(circle at 8% 86%, rgba(41, 128, 254, 0.10), transparent 30%),
        linear-gradient(180deg, #FFFFFF 0%, #F4F8FF 100%);
}

.launch-hero::before {
    content: "";
    position: absolute;
    inset: 18px;
    border: 1px solid rgba(41, 128, 254, 0.10);
    border-radius: 40px;
    pointer-events: none;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 34px;
    align-items: center;
}

.hero-copy .lead {
    max-width: 650px;
    font-size: 18px;
    color: #475569;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin: 28px 0 18px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 13px 26px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    border: 1px solid var(--primary);
    box-shadow: 0 16px 34px rgba(41, 128, 254, 0.25);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 42px rgba(41, 128, 254, 0.32);
}

.ghost-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 12px 18px;
    color: var(--primary);
    font-weight: 850;
    border-radius: 999px;
    background: var(--white);
    border: 1px solid var(--line);
}

.security-tags,
.floating-tags,
.inline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.security-tags span,
.floating-tags span,
.inline-tags span {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid var(--line);
    color: #475569;
    font-size: 13px;
    font-weight: 800;
}

.hero-visual,
.app-showcase {
    position: relative;
    min-height: 420px;
    display: grid;
    place-items: center;
}

.phone-glow {
    position: absolute;
    width: 82%;
    aspect-ratio: 1;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(41, 128, 254, 0.20), rgba(41, 128, 254, 0.04) 55%, transparent 70%);
    filter: blur(4px);
}

.product-img {
    position: relative;
    z-index: 2;
    width: min(72vw, 420px);
    margin: 0 auto;
    filter: drop-shadow(0 30px 42px rgba(15, 23, 42, 0.14));
}

.float-card {
    position: absolute;
    z-index: 3;
    padding: 12px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(226, 232, 240, 0.92);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.10);
    font-weight: 900;
    color: var(--deep);
    font-size: 13px;
}

.float-card small {
    display: block;
    font-weight: 700;
    color: var(--muted);
}

.float-card.one { top: 8%; left: 2%; }
.float-card.two { right: 4%; top: 26%; }
.float-card.three { left: 3%; bottom: 20%; }
.float-card.four { right: 8%; bottom: 8%; }

.highlight-bar,
.category-grid,
.risk-grid,
.faq-grid,
.card-grid {
    display: grid;
    gap: 16px;
}

.highlight-card,
.category-card,
.risk-card,
.faq-item,
.info-card,
.step-card,
.note-panel,
.check-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.04);
}

.highlight-card,
.category-card,
.risk-card,
.info-card,
.step-card,
.check-card {
    padding: 20px;
}

.highlight-card {
    min-height: 168px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.highlight-card a,
.category-card a,
.related-links a,
.text-link {
    color: var(--primary);
    font-weight: 900;
}

.big-feature-card,
.launch-card {
    display: grid;
    gap: 28px;
    align-items: center;
    padding: 26px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--line);
    background: var(--white);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.big-feature-card + .big-feature-card {
    margin-top: 24px;
}

.big-feature-card .feature-img {
    border-radius: 28px;
    background: linear-gradient(135deg, var(--primary-soft), #FFFFFF);
    padding: 18px;
    border: 1px solid rgba(41, 128, 254, 0.10);
}

.big-feature-card .feature-img img {
    margin: 0 auto;
    max-height: 430px;
    object-fit: contain;
}

.wallet-feature {
    background: linear-gradient(135deg, #FFFFFF 0%, #F5F9FF 100%);
}

.cold-wallet-feature {
    background: linear-gradient(135deg, #F6FAFF 0%, #FFFFFF 100%);
}

.swap-feature {
    background: linear-gradient(135deg, #FFFFFF 0%, #F8FBFF 100%);
}

.dapp-feature {
    background: linear-gradient(135deg, #F4F8FF 0%, #FFFFFF 100%);
}

.feature-list,
.clean-list,
.check-list {
    padding: 0;
    margin: 18px 0 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.feature-list li,
.clean-list li,
.check-list li {
    position: relative;
    padding-left: 28px;
    color: #475569;
}

.feature-list li::before,
.clean-list li::before,
.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px var(--primary-soft);
}

.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.related-links a {
    padding: 9px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, 0.12);
    font-size: 13px;
}

.process-steps {
    display: grid;
    gap: 14px;
    counter-reset: step;
}

.step-card {
    position: relative;
    padding-top: 62px;
}

.step-number {
    position: absolute;
    top: 18px;
    left: 20px;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
}

.risk-card {
    border-top: 4px solid var(--primary);
}

.risk-card strong,
.info-card strong,
.check-card strong {
    color: var(--deep);
}

.app-category-center {
    padding: 36px;
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at 86% 18%, rgba(41, 128, 254, 0.12), transparent 32%),
        var(--primary-ghost);
    border: 1px solid rgba(41, 128, 254, 0.10);
}

.category-card {
    min-height: 182px;
}

.category-card .icon-dot,
.highlight-card .icon-dot {
    width: 34px;
    height: 34px;
    border-radius: 13px;
    background: var(--primary);
    box-shadow: 0 12px 24px rgba(41, 128, 254, 0.22);
    margin-bottom: 16px;
}

.faq-item {
    padding: 22px;
}

.faq-item h3 {
    font-size: 18px;
    letter-spacing: -0.02em;
}

.cta-section {
    text-align: center;
    padding: 46px 22px;
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at 50% 0%, rgba(41, 128, 254, 0.16), transparent 42%),
        linear-gradient(135deg, #FFFFFF, #F0F7FF);
    border: 1px solid rgba(41, 128, 254, 0.12);
    box-shadow: var(--shadow);
}

.page-hero {
    padding: 62px 0 36px;
    background:
        radial-gradient(circle at 88% 16%, rgba(41, 128, 254, 0.15), transparent 28%),
        linear-gradient(180deg, #FFFFFF, #F5F9FF);
    border-bottom: 1px solid var(--line);
}

.page-hero .summary {
    max-width: 760px;
    font-size: 18px;
}

.page-layout {
    display: grid;
    gap: 24px;
    align-items: start;
}

.article-panel {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: 0 12px 36px rgba(15, 23, 42, 0.04);
}

.article-panel p {
    font-size: 16px;
}

.side-panel {
    display: grid;
    gap: 14px;
}

.note-panel {
    padding: 22px;
    background: linear-gradient(180deg, #FFFFFF, #F8FBFF);
}

.download-panel {
    margin-top: 22px;
    padding: 22px;
    border-radius: var(--radius-lg);
    background: var(--primary-ghost);
    border: 1px solid rgba(41, 128, 254, 0.12);
}

.download-panel .download-btn,
.cta-section .download-btn {
    margin-top: 8px;
}

.download-steps {
    display: grid;
    gap: 14px;
}

.download-step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 14px;
    align-items: start;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--white);
}

.download-step span {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
}

.site-footer {
    margin-top: 34px;
    border-top: 1px solid var(--line);
    background: #FFFFFF;
}

.footer-inner {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    padding: 36px 0;
    display: grid;
    gap: 22px;
}

.footer-brand {
    color: var(--deep);
    font-weight: 900;
    margin-bottom: 8px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.footer-links a {
    color: var(--muted);
    font-weight: 700;
}

.footer-links a:hover {
    color: var(--primary);
}

@media (min-width: 640px) {
    .highlight-bar,
    .category-grid,
    .risk-grid,
    .card-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: 900px) {
    .nav-toggle {
        display: none;
    }
    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 2px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }
    .site-nav a {
        padding: 9px 10px;
        font-size: 13px;
    }
    .hero-grid {
        grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
    }
    .highlight-bar {
        grid-template-columns: repeat(3, 1fr);
    }
    .big-feature-card {
        grid-template-columns: minmax(0, 1fr) minmax(360px, 0.86fr);
        padding: 42px;
    }
    .big-feature-card.reverse .feature-img {
        order: -1;
    }
    .page-layout {
        grid-template-columns: minmax(0, 1fr) 320px;
    }
    .article-panel {
        padding: 34px;
    }
    .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);
    }
    .footer-inner {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

@media (min-width: 1120px) {
    .site-nav a {
        padding: 10px 12px;
        font-size: 14px;
    }
    .process-steps.six {
        grid-template-columns: repeat(6, 1fr);
    }
}

@media (max-width: 420px) {
    .nav-wrap,
    .container,
    .content-container,
    .narrow-container,
    .footer-inner {
        width: min(100% - 24px, var(--container));
    }
    .brand span {
        font-size: 14px;
    }
    .launch-hero {
        padding-top: 42px;
    }
    .hero-visual,
    .app-showcase {
        min-height: 330px;
    }
    .float-card {
        font-size: 11px;
        padding: 9px 10px;
    }
    .big-feature-card,
    .app-category-center,
    .article-panel {
        padding: 20px;
        border-radius: 24px;
    }
    .download-btn,
    .ghost-link {
        width: 100%;
    }
}