:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-lighter: #F5F9FF;
    --white: #ffffff;
    --gray-50: #F8FAFC;
    --gray-100: #EEF2F7;
    --gray-200: #E4E9F2;
    --gray-500: #667085;
    --gray-700: #344054;
    --gray-900: #121826;
    --shadow: 0 18px 45px rgba(41, 128, 254, 0.10);
    --radius: 26px;
}

* {
    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(--gray-900);
    background: linear-gradient(180deg, #ffffff 0%, #F7FAFF 42%, #ffffff 100%);
    line-height: 1.72;
    overflow-x: hidden;
}

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

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

.container {
    width: min(100% - 32px, 1160px);
    margin: 0 auto;
}

.content-container {
    width: min(100% - 32px, 940px);
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(228,233,242,0.9);
}

.nav-wrap {
    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(--gray-900);
    letter-spacing: -0.02em;
}

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

.brand-text {
    white-space: nowrap;
}

.menu-toggle {
    border: 1px solid var(--gray-200);
    background: var(--white);
    color: var(--gray-900);
    width: 42px;
    height: 42px;
    border-radius: 14px;
    font-size: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    background: var(--white);
    padding: 14px;
    border: 1px solid var(--gray-200);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

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

.site-nav a {
    padding: 11px 12px;
    border-radius: 14px;
    color: var(--gray-700);
    font-size: 15px;
    font-weight: 650;
}

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

.section {
    padding: 58px 0;
}

.section-tight {
    padding: 36px 0;
}

.gradient-bg {
    background: radial-gradient(circle at 20% 0%, rgba(41,128,254,0.13), transparent 30%), linear-gradient(135deg, #F7FAFF 0%, #FFFFFF 100%);
}

.eyebrow,
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border: 1px solid rgba(41,128,254,0.18);
    border-radius: 999px;
    color: var(--primary);
    background: var(--primary-soft);
    font-weight: 760;
    font-size: 13px;
    margin-bottom: 14px;
}

h1, h2, h3 {
    color: var(--gray-900);
    line-height: 1.18;
    margin: 0 0 16px;
    letter-spacing: -0.035em;
}

h1 {
    font-size: clamp(38px, 9vw, 72px);
}

h2 {
    font-size: clamp(28px, 5.8vw, 46px);
}

h3 {
    font-size: 21px;
}

p {
    margin: 0 0 16px;
    color: var(--gray-500);
}

.lead {
    font-size: clamp(17px, 4vw, 21px);
    color: var(--gray-700);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    letter-spacing: 0.01em;
    box-shadow: 0 14px 30px rgba(41,128,254,0.25);
    border: 1px solid var(--primary);
    transition: transform .2s ease, box-shadow .2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 38px rgba(41,128,254,0.30);
}

.text-link {
    color: var(--primary);
    font-weight: 780;
}

.link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 18px;
}

.web3-hero {
    position: relative;
    overflow: hidden;
    padding: 56px 0 38px;
    background: radial-gradient(circle at 85% 15%, rgba(41,128,254,0.16), transparent 28%), linear-gradient(135deg, #FFFFFF 0%, #F3F8FF 100%);
}

.web3-hero::after {
    content: "";
    position: absolute;
    inset: auto -15% -30% 30%;
    height: 280px;
    background: radial-gradient(circle, rgba(41,128,254,0.13), transparent 70%);
    pointer-events: none;
}

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

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    margin: 26px 0 20px;
}

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

.security-tags span,
.float-tags span,
.mini-tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--gray-200);
    background: rgba(255,255,255,0.78);
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 700;
}

.hero-visual {
    position: relative;
    min-height: 360px;
    border-radius: 34px;
    border: 1px solid rgba(41,128,254,0.13);
    background: linear-gradient(145deg, rgba(255,255,255,0.8), rgba(235,244,255,0.95));
    box-shadow: var(--shadow);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-visual img {
    max-height: 420px;
    object-fit: contain;
    filter: drop-shadow(0 24px 40px rgba(41,128,254,0.15));
}

.float-tags {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    justify-content: center;
}

.ecosystem-nav {
    padding: 28px 0 52px;
}

.ecosystem-grid,
.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.ecosystem-card,
.feature-card,
.info-card,
.faq-item,
.risk-card,
.step-card,
.page-card,
.safety-panel {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 12px 30px rgba(18,24,38,0.045);
}

.ecosystem-card {
    position: relative;
    overflow: hidden;
}

.ecosystem-card::before {
    content: "";
    position: absolute;
    width: 92px;
    height: 92px;
    border-radius: 999px;
    right: -42px;
    top: -42px;
    background: var(--primary-soft);
}

.ecosystem-card strong {
    display: block;
    color: var(--primary);
    font-size: 13px;
    margin-bottom: 10px;
}

.split-section {
    display: grid;
    gap: 26px;
    align-items: center;
}

.web3-section,
.hardware-wallet-section,
.digital-assets-section,
.swap-section,
.privacy-section,
.submit-chain-section,
.developer-center-section {
    border-radius: 34px;
    padding: 28px;
    border: 1px solid var(--gray-200);
    background: rgba(255,255,255,0.72);
    box-shadow: 0 18px 44px rgba(18,24,38,0.04);
}

.hardware-wallet-section,
.submit-chain-section {
    background: linear-gradient(135deg, #F6FAFF 0%, #FFFFFF 100%);
}

.module-image {
    border-radius: 30px;
    background: linear-gradient(145deg, var(--primary-soft), #FFFFFF);
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    border: 1px solid rgba(41,128,254,0.14);
}

.module-image img {
    max-height: 320px;
    object-fit: contain;
}

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

.check-list li,
.clean-list li {
    position: relative;
    padding-left: 28px;
    color: var(--gray-700);
}

.check-list li::before,
.clean-list li::before {
    content: "";
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--primary);
    position: absolute;
    left: 4px;
    top: 12px;
}

.privacy-panel {
    display: grid;
    gap: 16px;
}

.privacy-points {
    display: grid;
    gap: 14px;
}

.point {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    padding: 18px;
}

.dev-panel {
    background: #F7FAFF;
    border: 1px solid var(--gray-200);
    border-radius: 26px;
    padding: 18px;
    font-family: "SFMono-Regular", Consolas, Menlo, monospace;
    color: var(--gray-700);
}

.code-line {
    display: flex;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid rgba(228,233,242,0.7);
}

.code-line:last-child {
    border-bottom: 0;
}

.code-line span:first-child {
    color: var(--primary);
    min-width: 64px;
}

.process-steps {
    display: grid;
    gap: 16px;
}

.step-card {
    position: relative;
    padding-left: 76px;
}

.step-num {
    position: absolute;
    left: 20px;
    top: 22px;
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.risk-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

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

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item h3 {
    margin-bottom: 8px;
    font-size: 18px;
}

.cta-section {
    text-align: center;
    padding: 56px 0;
    background: radial-gradient(circle at 50% 0%, rgba(41,128,254,0.16), transparent 35%), linear-gradient(135deg, #F5F9FF, #FFFFFF);
}

.cta-box {
    border: 1px solid var(--gray-200);
    background: rgba(255,255,255,0.8);
    border-radius: 34px;
    padding: 32px;
    box-shadow: var(--shadow);
}

.page-hero {
    padding: 56px 0 30px;
    background: radial-gradient(circle at 80% 10%, rgba(41,128,254,0.14), transparent 28%), linear-gradient(135deg, #FFFFFF 0%, #F6FAFF 100%);
}

.page-layout {
    display: grid;
    gap: 22px;
    align-items: start;
    padding: 34px 0 62px;
}

.article-body {
    display: grid;
    gap: 18px;
}

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

.sidebar {
    display: grid;
    gap: 16px;
}

.notice-box {
    border-radius: 24px;
    border: 1px solid rgba(41,128,254,0.18);
    background: var(--primary-lighter);
    padding: 20px;
}

.two-col {
    display: grid;
    gap: 18px;
}

.site-footer {
    background: #F3F6FA;
    border-top: 1px solid var(--gray-200);
    padding: 42px 0 20px;
}

.footer-grid {
    display: grid;
    gap: 26px;
}

.footer-brand {
    font-weight: 850;
    font-size: 20px;
    margin-bottom: 10px;
}

.site-footer h3 {
    font-size: 16px;
    margin-bottom: 10px;
}

.site-footer a {
    display: block;
    color: var(--gray-500);
    margin: 8px 0;
}

.footer-bottom {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--gray-500);
    font-size: 14px;
}

@media (min-width: 680px) {
    .ecosystem-grid,
    .category-grid,
    .risk-grid,
    .two-col {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .process-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 960px) {
    .menu-toggle {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 4px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }

    .site-nav a {
        font-size: 14px;
        padding: 9px 10px;
    }

    .web3-hero {
        padding: 88px 0 54px;
    }

    .hero-grid {
        grid-template-columns: 1.02fr 0.98fr;
        gap: 48px;
    }

    .ecosystem-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .ecosystem-card:nth-child(1),
    .ecosystem-card:nth-child(7) {
        grid-column: span 2;
    }

    .split-section,
    .privacy-panel,
    .page-layout {
        grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
    }

    .split-section.reverse .module-image {
        order: -1;
    }

    .web3-section,
    .hardware-wallet-section,
    .digital-assets-section,
    .swap-section,
    .privacy-section,
    .submit-chain-section,
    .developer-center-section {
        padding: 38px;
    }

    .risk-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .footer-grid {
        grid-template-columns: 1.5fr 0.8fr 0.8fr;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (min-width: 1180px) {
    .site-nav a {
        padding: 10px 12px;
    }
}