:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-pale: #F5F9FF;
    --bg: #F6F8FB;
    --white: #FFFFFF;
    --ink: #1F2937;
    --muted: #667085;
    --muted-2: #98A2B3;
    --border: #E4EAF2;
    --line: #D9E4F2;
    --shadow: 0 18px 50px rgba(41, 128, 254, 0.10);
    --soft-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    --radius-lg: 30px;
    --radius-md: 22px;
    --radius-sm: 16px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 32%, #F6F8FB 100%);
    line-height: 1.72;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: -120px auto auto -120px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(41, 128, 254, 0.14), transparent 68%);
    pointer-events: none;
    z-index: -1;
}

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(18px);
    border-bottom: 1px solid rgba(228, 234, 242, 0.86);
}

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

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: #101828;
    white-space: nowrap;
}

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

.nav-toggle {
    display: none;
}

.mobile-nav-button {
    width: 44px;
    height: 44px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--white);
    cursor: pointer;
}

.mobile-nav-button span {
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--ink);
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--soft-shadow);
}

.site-nav a {
    display: block;
    padding: 12px 14px;
    color: var(--muted);
    font-weight: 650;
    border-radius: 14px;
}

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

.nav-toggle:checked ~ .site-nav {
    display: block;
}

.site-main {
    min-height: 60vh;
}

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

.section-container {
    padding: 56px 0;
}

.eyebrow,
.category-badge,
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, 0.16);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 750;
    letter-spacing: 0.02em;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
    border: 1px solid var(--primary);
    box-shadow: 0 14px 28px rgba(41, 128, 254, 0.20);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    cursor: pointer;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(41, 128, 254, 0.26);
}

.text-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 800;
    margin-top: 12px;
}

.text-link::after {
    content: "›";
    margin-left: 8px;
    font-size: 20px;
}

.web3-dashboard-hero {
    width: min(100% - 32px, var(--container));
    margin: 30px auto 0;
    padding: 26px;
    border-radius: 34px;
    background:
        radial-gradient(circle at 10% 10%, rgba(41, 128, 254, 0.16), transparent 28%),
        linear-gradient(135deg, #FFFFFF 0%, #F4F9FF 100%);
    border: 1px solid rgba(217, 228, 242, 0.92);
    box-shadow: var(--shadow);
    display: grid;
    gap: 28px;
}

.hero-content h1 {
    margin: 18px 0 16px;
    font-size: clamp(34px, 8vw, 64px);
    line-height: 1.06;
    letter-spacing: -0.04em;
    color: #0F172A;
}

.hero-content p {
    margin: 0 0 22px;
    color: var(--muted);
    font-size: 17px;
}

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

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

.security-tags span,
.mini-tag {
    color: #344054;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 700;
}

.hero-visual {
    position: relative;
}

.product-shell {
    position: relative;
    margin: 0 auto;
    width: min(320px, 100%);
    border-radius: 34px;
    padding: 18px;
    background: linear-gradient(180deg, #FFFFFF, #EEF6FF);
    border: 1px solid var(--border);
    box-shadow: 0 24px 55px rgba(15, 23, 42, 0.10);
}

.product-shell img {
    margin: 0 auto;
    max-height: 390px;
    object-fit: contain;
}

.status-stack {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.status-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 13px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--border);
    box-shadow: var(--soft-shadow);
}

.status-card strong {
    display: block;
    color: #101828;
}

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

.section-heading {
    display: grid;
    gap: 12px;
    margin-bottom: 24px;
}

.section-heading h2,
.page-hero h1 {
    margin: 0;
    font-size: clamp(28px, 6vw, 44px);
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: #101828;
}

.section-heading p,
.page-hero p {
    margin: 0;
    color: var(--muted);
    max-width: 760px;
}

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

.service-card {
    min-height: 190px;
    padding: 22px;
    border-radius: var(--radius-md);
    background: var(--white);
    border: 1px solid var(--border);
    box-shadow: var(--soft-shadow);
    transition: transform .2s ease, border-color .2s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(41, 128, 254, 0.34);
}

.service-card .index-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    color: var(--primary);
    background: var(--primary-soft);
    font-weight: 900;
    margin-bottom: 18px;
}

.service-card h3 {
    margin: 0 0 8px;
    font-size: 20px;
}

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

.digital-assets-hub,
.web3-ecosystem-section,
.hardware-wallet-section,
.swap-service-section,
.developer-center-section,
.submit-chain-section,
.privacy-boundary-section {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    padding: 26px;
    border-radius: 32px;
    border: 1px solid var(--border);
    background: var(--white);
    box-shadow: var(--soft-shadow);
    display: grid;
    gap: 26px;
}

.digital-assets-hub {
    background: linear-gradient(135deg, #FFFFFF, #F2F8FF);
}

.hardware-wallet-section {
    background: linear-gradient(135deg, #F7FAFF, #FFFFFF);
}

.swap-service-section {
    background: linear-gradient(135deg, #FFFFFF, #F7FAFF);
}

.module-copy h2,
.module-copy h3 {
    margin: 12px 0 12px;
    font-size: clamp(26px, 6vw, 40px);
    line-height: 1.18;
    letter-spacing: -0.03em;
}

.module-copy p {
    margin: 0 0 14px;
    color: var(--muted);
}

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

.feature-list li,
.clean-list li,
.check-list li {
    position: relative;
    padding-left: 28px;
    color: #344054;
}

.feature-list li::before,
.clean-list li::before,
.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    width: 10px;
    height: 10px;
    border-radius: 99px;
    background: var(--primary);
    box-shadow: 0 0 0 5px var(--primary-soft);
}

.module-image {
    align-self: center;
    border-radius: 28px;
    padding: 18px;
    background: #FFFFFF;
    border: 1px solid var(--border);
}

.module-image img {
    margin: 0 auto;
    max-height: 340px;
    object-fit: contain;
}

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

.info-panel,
.safety-panel,
.code-panel,
.sidebar-card,
.article-card,
.faq-item,
.risk-card,
.step-card {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #FFFFFF;
    box-shadow: var(--soft-shadow);
}

.safety-panel {
    background: linear-gradient(180deg, #FFFFFF, #F7FAFF);
    border-left: 4px solid var(--primary);
}

.info-panel h3,
.safety-panel h3,
.code-panel h3,
.sidebar-card h3,
.article-card h3,
.faq-item h3,
.risk-card h3,
.step-card h3 {
    margin: 0 0 10px;
    color: #101828;
}

.info-panel p,
.safety-panel p,
.sidebar-card p,
.article-card p,
.faq-item p,
.risk-card p,
.step-card p {
    margin: 0;
    color: var(--muted);
}

.submit-chain-section {
    background:
        radial-gradient(circle at top right, rgba(41, 128, 254, 0.12), transparent 30%),
        #FFFFFF;
}

.ecosystem-check {
    display: grid;
    gap: 12px;
}

.ecosystem-check div {
    padding: 14px 16px;
    background: var(--primary-pale);
    border: 1px solid rgba(41, 128, 254, 0.14);
    border-radius: 18px;
}

.code-panel {
    background: #F8FAFC;
    color: #101828;
    overflow: hidden;
}

.code-block {
    margin: 16px 0 0;
    padding: 18px;
    border-radius: 18px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    color: #344054;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 13px;
    line-height: 1.7;
    overflow-x: auto;
}

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

.step-card {
    position: relative;
    padding-top: 54px;
}

.step-card::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 20px;
    top: 18px;
    color: var(--primary);
    font-weight: 900;
    letter-spacing: -0.04em;
}

.risk-grid {
    display: grid;
    gap: 14px;
}

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

.risk-card .risk-label {
    color: var(--primary);
    font-weight: 850;
    font-size: 13px;
}

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

.faq-item summary {
    cursor: pointer;
    font-weight: 850;
    color: #101828;
}

.faq-item p {
    margin-top: 10px;
}

.cta-section {
    width: min(100% - 32px, var(--container));
    margin: 0 auto 72px;
    padding: 34px 24px;
    border-radius: 34px;
    text-align: center;
    border: 1px solid rgba(41, 128, 254, 0.15);
    background:
        radial-gradient(circle at 20% 0%, rgba(41, 128, 254, 0.16), transparent 28%),
        linear-gradient(135deg, #F8FBFF, #FFFFFF);
    box-shadow: var(--shadow);
}

.cta-section h2 {
    margin: 0 0 10px;
    font-size: clamp(28px, 6vw, 42px);
    letter-spacing: -0.03em;
}

.cta-section p {
    max-width: 650px;
    margin: 0 auto 22px;
    color: var(--muted);
}

.page-hero {
    width: min(100% - 32px, var(--container));
    margin: 30px auto 0;
    padding: 34px 24px;
    border-radius: 32px;
    background:
        radial-gradient(circle at top left, rgba(41, 128, 254, 0.14), transparent 30%),
        #FFFFFF;
    border: 1px solid var(--border);
    box-shadow: var(--soft-shadow);
}

.page-hero .category-badge {
    margin-bottom: 16px;
}

.page-layout {
    width: min(100% - 32px, var(--container));
    margin: 26px auto 72px;
    display: grid;
    gap: 18px;
}

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

.article-card p + p {
    margin-top: 12px;
}

.article-card h2 {
    margin: 0 0 12px;
    font-size: 26px;
}

.article-actions {
    padding: 22px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(41, 128, 254, 0.18);
    background: var(--primary-pale);
}

.download-page-grid {
    width: min(100% - 32px, 960px);
    margin: 26px auto 72px;
    display: grid;
    gap: 18px;
}

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

.footer-grid {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    padding: 42px 0 26px;
    display: grid;
    gap: 28px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer-brand img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 10px;
}

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

.site-footer h3 {
    margin: 0 0 12px;
    font-size: 16px;
}

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

.footer-bottom {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    padding: 18px 0 28px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--muted-2);
    border-top: 1px solid var(--border);
    font-size: 14px;
}

@media (min-width: 720px) {
    .service-index {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .panel-grid,
    .category-grid,
    .risk-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
    }

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

@media (min-width: 980px) {
    .mobile-nav-button {
        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 {
        display: inline-flex;
        padding: 10px 12px;
        font-size: 14px;
    }

    .web3-dashboard-hero {
        grid-template-columns: 1.05fr .95fr;
        align-items: center;
        padding: 42px;
    }

    .hero-visual {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
        gap: 18px;
    }

    .product-shell {
        width: 100%;
    }

    .status-stack {
        margin-top: 0;
    }

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

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

    .digital-assets-hub,
    .web3-ecosystem-section,
    .hardware-wallet-section,
    .swap-service-section,
    .developer-center-section,
    .submit-chain-section,
    .privacy-boundary-section {
        grid-template-columns: 1fr 1fr;
        align-items: center;
        padding: 38px;
    }

    .web3-ecosystem-section .module-image,
    .hardware-wallet-section .module-image {
        order: -1;
    }

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

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

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

    .page-layout {
        grid-template-columns: minmax(0, 1fr) 330px;
        align-items: start;
    }

    .sidebar {
        position: sticky;
        top: 96px;
        display: grid;
        gap: 18px;
    }
}

@media (max-width: 430px) {
    .header-inner,
    .container,
    .section-container,
    .page-container,
    .web3-dashboard-hero,
    .digital-assets-hub,
    .web3-ecosystem-section,
    .hardware-wallet-section,
    .swap-service-section,
    .developer-center-section,
    .submit-chain-section,
    .privacy-boundary-section,
    .page-hero,
    .page-layout,
    .download-page-grid,
    .cta-section {
        width: min(100% - 24px, var(--container));
    }

    .download-btn {
        width: 100%;
    }

    .hero-actions {
        align-items: stretch;
    }

    .web3-dashboard-hero,
    .page-hero,
    .cta-section {
        border-radius: 24px;
    }
}