* {
    box-sizing: border-box;
}

:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-pale: #F5F9FF;
    --white: #FFFFFF;
    --text: #1F2937;
    --muted: #667085;
    --light: #F4F7FB;
    --line: #E5EAF2;
    --deep: #344054;
    --radius: 24px;
    --shadow: 0 18px 45px rgba(31, 41, 55, .08);
}

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%;
    height: auto;
    display: block;
}

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255, 255, 255, .92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
}

.header-shell {
    width: min(1180px, calc(100% - 28px));
    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;
    color: #162033;
    letter-spacing: .01em;
}

.brand img,
.footer-brand img {
    width: 38px;
    height: 38px;
    object-fit: contain;
}

.nav-toggle {
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--deep);
    border-radius: 999px;
    padding: 9px 14px;
    font-weight: 700;
}

.site-nav {
    display: none;
    position: absolute;
    left: 14px;
    right: 14px;
    top: 74px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.site-nav.open {
    display: grid;
    gap: 4px;
}

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

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

.section {
    padding: 58px 0;
}

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

.eyebrow,
.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid #D9EAFF;
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
}

h1,
h2,
h3 {
    color: #111827;
    line-height: 1.18;
    margin: 0;
}

h1 {
    font-size: clamp(34px, 8vw, 64px);
    letter-spacing: -0.05em;
}

h2 {
    font-size: clamp(28px, 5vw, 44px);
    letter-spacing: -0.035em;
}

h3 {
    font-size: 20px;
}

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

.lead {
    font-size: 18px;
    color: var(--deep);
}

.web3-dashboard-hero {
    position: relative;
    padding: 52px 0 36px;
    overflow: hidden;
}

.web3-dashboard-hero::before {
    content: "";
    position: absolute;
    width: 520px;
    height: 520px;
    right: -220px;
    top: -210px;
    background: radial-gradient(circle, rgba(41,128,254,.19), rgba(41,128,254,0) 65%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    gap: 30px;
    align-items: center;
}

.hero-copy {
    display: grid;
    gap: 22px;
}

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

.security-tags span {
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: 999px;
    color: var(--deep);
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 700;
}

.download-btn {
    display: inline-flex;
    width: fit-content;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 13px 22px;
    border-radius: 999px;
    color: var(--white);
    background: var(--primary);
    font-weight: 900;
    box-shadow: 0 14px 30px rgba(41,128,254,.26);
    transition: transform .2s ease, box-shadow .2s ease;
    cursor: pointer;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 42px rgba(41,128,254,.32);
}

.hero-console {
    position: relative;
    border-radius: 34px;
    border: 1px solid var(--line);
    padding: 18px;
    background: linear-gradient(145deg, #FFFFFF 0%, #F4F8FF 100%);
    box-shadow: var(--shadow);
}

.hero-console::after {
    content: "";
    position: absolute;
    inset: 16px;
    border-radius: 28px;
    border: 1px solid rgba(41,128,254,.16);
    pointer-events: none;
}

.product-visual {
    width: min(330px, 84%);
    margin: 4px auto 16px;
    filter: drop-shadow(0 20px 30px rgba(31,41,55,.12));
}

.status-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.status-card {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255,255,255,.88);
    padding: 12px;
}

.status-card strong {
    display: block;
    color: #101828;
    font-size: 14px;
}

.status-card span {
    color: var(--muted);
    font-size: 13px;
}

.service-index {
    display: grid;
    gap: 14px;
}

.service-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 14px 35px rgba(31, 41, 55, .05);
}

.service-card .tag {
    display: inline-block;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 800;
    margin-bottom: 12px;
}

.service-card p {
    margin: 10px 0 14px;
}

.text-link {
    color: var(--primary);
    font-weight: 900;
}

.digital-assets-hub,
.web3-ecosystem-section,
.hardware-wallet-section,
.swap-service-section,
.privacy-boundary-section,
.submit-chain-section,
.developer-center-section,
.feature-panel,
.page-layout {
    display: grid;
    gap: 24px;
    align-items: center;
}

.panel {
    border: 1px solid var(--line);
    border-radius: 30px;
    background: var(--white);
    box-shadow: var(--shadow);
    padding: clamp(22px, 5vw, 38px);
}

.panel.soft {
    background: linear-gradient(135deg, #F8FBFF, #FFFFFF);
}

.panel.blue-soft {
    background: linear-gradient(145deg, #F5F9FF, #FFFFFF);
    border-color: #DDEBFF;
}

.copy-stack {
    display: grid;
    gap: 16px;
}

.feature-list,
.check-list,
.step-list {
    display: grid;
    gap: 12px;
    padding: 0;
    margin: 18px 0 0;
    list-style: none;
}

.feature-list li,
.check-list li,
.step-list li {
    position: relative;
    padding-left: 26px;
    color: var(--deep);
}

.feature-list li::before,
.check-list li::before,
.step-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--primary);
    box-shadow: 0 0 0 5px var(--primary-soft);
}

.image-card {
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 18px;
    background: linear-gradient(145deg, #FFFFFF, #F3F8FF);
    box-shadow: var(--shadow);
}

.image-card img {
    margin: 0 auto;
    border-radius: 24px;
}

.boundary-tags,
.meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.boundary-tags span,
.meta-tags span {
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    border: 1px solid #D7E8FF;
    padding: 7px 11px;
    font-weight: 800;
    font-size: 13px;
}

.ecosystem-card {
    border-radius: 24px;
    background: var(--primary);
    color: var(--white);
    padding: 24px;
}

.ecosystem-card p,
.ecosystem-card li {
    color: rgba(255,255,255,.84);
}

.code-card {
    border: 1px solid #DDEBFF;
    background: #F7FAFF;
    border-radius: 24px;
    padding: 22px;
    font-family: "SFMono-Regular", Consolas, monospace;
    color: #1F2937;
    overflow-x: auto;
}

.code-card span {
    color: var(--primary);
}

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

.step-card {
    counter-increment: step;
    position: relative;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
    padding: 20px;
}

.step-number {
    display: inline-flex;
    width: 34px;
    height: 34px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    margin-bottom: 12px;
}

.risk-grid,
.category-grid,
.faq-grid,
.cards-grid {
    display: grid;
    gap: 14px;
}

.risk-card {
    border: 1px solid var(--line);
    border-left: 5px solid var(--primary);
    border-radius: 20px;
    background: var(--white);
    padding: 18px;
}

.risk-card strong {
    display: block;
    color: #111827;
    margin-bottom: 8px;
}

.faq-item {
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--white);
    padding: 20px;
}

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

.cta-section {
    text-align: center;
    border-radius: 34px;
    border: 1px solid #DDEBFF;
    background: linear-gradient(135deg, #F5F9FF, #FFFFFF);
    padding: clamp(28px, 6vw, 54px);
    display: grid;
    gap: 16px;
    justify-items: center;
}

.page-hero {
    padding: 46px 0 22px;
}

.page-hero .container {
    display: grid;
    gap: 14px;
}

.page-hero h1 {
    font-size: clamp(32px, 6vw, 54px);
}

.article-card {
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: 30px;
    padding: clamp(22px, 5vw, 38px);
    box-shadow: 0 16px 40px rgba(31,41,55,.06);
}

.article-card p + p {
    margin-top: 16px;
}

.aside-card {
    border: 1px solid #DDEBFF;
    background: linear-gradient(180deg, #F7FBFF, #FFFFFF);
    border-radius: 26px;
    padding: 22px;
}

.aside-card h3 {
    margin-bottom: 12px;
}

.related-links {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.related-links a {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 10px 12px;
    color: var(--primary);
    font-weight: 800;
    background: var(--white);
}

.page-actions {
    margin-top: 24px;
}

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

.download-steps div {
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--white);
    padding: 18px;
}

.site-footer {
    margin-top: 42px;
    background: #F5F7FB;
    border-top: 1px solid var(--line);
}

.footer-grid {
    display: grid;
    gap: 28px;
    padding: 42px 0;
}

.site-footer h3 {
    font-size: 15px;
    margin-bottom: 10px;
}

.site-footer a {
    display: block;
    color: var(--muted);
    margin: 7px 0;
    font-weight: 700;
}

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

.footer-bottom {
    border-top: 1px solid var(--line);
    color: var(--muted);
    text-align: center;
    padding: 18px;
    font-size: 13px;
}

@media (min-width: 640px) {
    .status-grid,
    .service-index,
    .risk-grid,
    .category-grid,
    .faq-grid,
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (min-width: 880px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        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,
    .digital-assets-hub,
    .web3-ecosystem-section,
    .hardware-wallet-section,
    .swap-service-section,
    .privacy-boundary-section,
    .submit-chain-section,
    .developer-center-section,
    .feature-panel,
    .page-layout {
        grid-template-columns: 1.05fr .95fr;
    }

    .web3-ecosystem-section,
    .swap-service-section {
        grid-template-columns: .95fr 1.05fr;
    }

    .service-index {
        grid-template-columns: repeat(4, 1fr);
    }

    .service-card.wide {
        grid-column: span 2;
    }

    .process-steps {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .footer-grid {
        grid-template-columns: 1.4fr .8fr .8fr;
    }
}

@media (min-width: 1100px) {
    .site-nav a {
        padding: 9px 12px;
        font-size: 14px;
    }

    .status-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .status-card:nth-child(1),
    .status-card:nth-child(5) {
        grid-column: span 2;
    }
}

@media (max-width: 420px) {
    .container {
        width: min(100% - 24px, 1120px);
    }

    .section {
        padding: 44px 0;
    }

    .download-btn {
        width: 100%;
        min-height: 52px;
    }

    .site-nav {
        left: 10px;
        right: 10px;
    }
}