:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-soft-2: #F4F8FF;
    --text: #1E2A3A;
    --muted: #627086;
    --line: #E6ECF5;
    --panel: #FFFFFF;
    --bg: #F7FAFF;
    --soft-gray: #F4F6FA;
    --deep-gray: #2F3B4D;
    --shadow: 0 18px 45px rgba(31, 92, 180, .08);
    --radius: 24px;
}

* {
    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(--text);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 38%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

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

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: .02em;
    color: var(--deep-gray);
    flex: 0 0 auto;
}

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

.nav-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 0 10px;
}

.nav-toggle span {
    height: 2px;
    width: 100%;
    background: var(--deep-gray);
    border-radius: 999px;
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    box-shadow: var(--shadow);
}

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

.site-nav a {
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--muted);
    font-weight: 650;
    font-size: 14px;
}

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

.web3-dashboard-hero {
    padding: 52px 0 34px;
    position: relative;
}

.web3-dashboard-hero:before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 12%, rgba(41, 128, 254, .16), transparent 34%),
        radial-gradient(circle at 84% 6%, rgba(41, 128, 254, .10), transparent 32%);
    pointer-events: none;
}

.hero-grid {
    position: relative;
    display: grid;
    gap: 26px;
    align-items: center;
}

.eyebrow,
.category-badge,
.index-tag {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 760;
    font-size: 13px;
}

h1 {
    margin: 16px 0 14px;
    font-size: clamp(34px, 8vw, 64px);
    line-height: 1.08;
    letter-spacing: -.04em;
}

.hero-copy p,
.section-head p,
.page-hero p,
.cta-section p {
    color: var(--muted);
    font-size: 16px;
    margin: 0;
}

.hero-actions {
    margin-top: 22px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 22px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    letter-spacing: .02em;
    box-shadow: 0 12px 28px rgba(41, 128, 254, .24);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(41, 128, 254, .30);
}

.safety-tags,
.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.safety-tags {
    margin-top: 18px;
}

.safety-tags span,
.tag-row span {
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255,255,255,.76);
    color: var(--muted);
    font-size: 13px;
    font-weight: 650;
}

.hero-visual {
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 16px;
    background: rgba(255,255,255,.86);
    box-shadow: var(--shadow);
}

.product-frame {
    position: relative;
    border-radius: 26px;
    min-height: 420px;
    overflow: hidden;
    background: linear-gradient(150deg, #F5F9FF, #FFFFFF 52%, #EAF3FF);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 34px 24px;
}

.product-frame img {
    max-height: 360px;
    object-fit: contain;
    filter: drop-shadow(0 22px 28px rgba(34, 74, 130, .16));
}

.status-card {
    position: static;
    margin-top: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 12px;
    box-shadow: 0 12px 26px rgba(41,128,254,.08);
}

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

.status-card span {
    color: var(--muted);
    font-size: 12px;
}

.status-list {
    display: grid;
    gap: 10px;
    margin-top: 12px;
}

.status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--line);
}

.status-row b {
    color: var(--deep-gray);
    font-size: 14px;
}

.status-row span {
    color: var(--primary);
    font-size: 12px;
    font-weight: 760;
}

.section {
    padding: 42px 0;
}

.section-head {
    margin-bottom: 20px;
}

.section-head h2,
.panel-copy h2,
.page-hero h1,
.cta-section h2 {
    margin: 8px 0 10px;
    line-height: 1.16;
    letter-spacing: -.03em;
    font-size: clamp(26px, 6vw, 42px);
}

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

.service-card {
    padding: 20px;
    border-radius: 22px;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: 0 10px 26px rgba(32, 74, 120, .05);
}

.service-card h3 {
    margin: 12px 0 8px;
    font-size: 20px;
}

.service-card p {
    margin: 0 0 14px;
    color: var(--muted);
    font-size: 15px;
}

.inline-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 800;
    font-size: 14px;
}

.inline-link:after {
    content: "›";
    margin-left: 6px;
}

.feature-panel,
.digital-assets-hub,
.web3-ecosystem-section,
.hardware-wallet-section,
.swap-service-section,
.privacy-boundary-section,
.submit-chain-section,
.developer-center-section {
    border: 1px solid var(--line);
    border-radius: 30px;
    background: #fff;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.feature-grid {
    display: grid;
    gap: 0;
}

.panel-copy {
    padding: 26px;
}

.panel-copy p {
    color: var(--muted);
}

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

.panel-copy li,
.check-list li,
.page-list li {
    position: relative;
    padding-left: 26px;
    color: var(--muted);
}

.panel-copy li:before,
.check-list li:before,
.page-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);
}

.panel-media {
    background: var(--primary-soft-2);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
    min-height: 260px;
}

.panel-media img {
    max-height: 340px;
    object-fit: contain;
}

.hardware-wallet-section,
.privacy-boundary-section {
    background: linear-gradient(145deg, #F7FAFF, #FFFFFF);
}

.swap-service-section .panel-media {
    background: linear-gradient(135deg, #FFFFFF, #EAF3FF);
}

.boundary-grid,
.ecosystem-grid,
.doc-grid {
    display: grid;
    gap: 14px;
}

.boundary-card,
.ecosystem-card,
.doc-card,
.info-card,
.faq-item,
.risk-card,
.step-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 18px;
}

.boundary-card strong,
.ecosystem-card strong,
.doc-card strong {
    display: block;
    margin-bottom: 6px;
    color: var(--deep-gray);
}

.boundary-card p,
.ecosystem-card p,
.doc-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.code-panel {
    margin-top: 18px;
    border-radius: 22px;
    background: #F3F7FD;
    border: 1px solid var(--line);
    padding: 18px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    color: #334155;
    overflow: auto;
}

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

.process-steps,
.risk-grid,
.faq-grid,
.card-grid,
.category-grid {
    display: grid;
    gap: 14px;
}

.step-card {
    display: grid;
    gap: 8px;
}

.step-num {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
}

.step-card h3,
.risk-card h3,
.info-card h3,
.faq-item h3 {
    margin: 0;
    font-size: 18px;
}

.step-card p,
.risk-card p,
.info-card p,
.faq-item p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
}

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

.risk-label {
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
}

.cta-section {
    text-align: center;
    border-radius: 30px;
    padding: 36px 22px;
    background: linear-gradient(135deg, #F4F8FF, #FFFFFF);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.cta-section .download-btn {
    margin-top: 20px;
}

.page-hero {
    padding: 48px 0 20px;
}

.page-shell {
    padding: 24px 0 54px;
}

.page-layout {
    display: grid;
    gap: 18px;
}

.page-main,
.side-panel {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 24px;
    box-shadow: 0 12px 30px rgba(32, 74, 120, .05);
}

.page-main h2 {
    margin: 26px 0 10px;
    font-size: 24px;
    letter-spacing: -.02em;
}

.page-main p {
    color: var(--muted);
}

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

.side-panel {
    align-self: start;
    background: linear-gradient(180deg, #FFFFFF, #F7FAFF);
}

.side-panel h2,
.side-panel h3 {
    margin-top: 0;
}

.notice-box {
    padding: 18px;
    border-radius: 22px;
    background: var(--primary-soft-2);
    border: 1px solid #D9E8FF;
    color: var(--muted);
}

.notice-box strong {
    display: block;
    color: var(--deep-gray);
    margin-bottom: 6px;
}

.feature-strip {
    display: grid;
    gap: 12px;
    margin: 20px 0;
}

.feature-strip .info-card {
    background: var(--primary-soft-2);
}

.download-steps {
    counter-reset: downstep;
    display: grid;
    gap: 14px;
    margin: 24px 0;
}

.download-steps li {
    list-style: none;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    color: var(--muted);
}

.download-steps li:before {
    counter-increment: downstep;
    content: counter(downstep);
    display: inline-flex;
    width: 28px;
    height: 28px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
    margin-right: 10px;
}

.about-timeline {
    display: grid;
    gap: 14px;
    margin-top: 20px;
}

.timeline-item {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
}

.timeline-item strong {
    color: var(--primary);
}

.site-footer {
    margin-top: 36px;
    background: #F3F6FB;
    border-top: 1px solid var(--line);
    color: var(--muted);
}

.footer-grid {
    padding: 34px 0 22px;
    display: grid;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--deep-gray);
    font-size: 20px;
}

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

.site-footer h3 {
    margin: 0 0 12px;
    color: var(--deep-gray);
    font-size: 16px;
}

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

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

.footer-bottom {
    border-top: 1px solid var(--line);
    padding: 16px 0 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
}

@media (min-width: 640px) {
    .service-index,
    .risk-grid,
    .faq-grid,
    .card-grid,
    .category-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

@media (min-width: 900px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 3px;
        padding: 0;
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .site-nav a {
        font-size: 13px;
        padding: 8px 10px;
    }

    .web3-dashboard-hero {
        padding: 76px 0 48px;
    }

    .hero-grid {
        grid-template-columns: minmax(0, 1fr) minmax(390px, .86fr);
        gap: 38px;
    }

    .status-card {
        position: absolute;
        min-width: 170px;
        margin: 0;
    }

    .status-card.one {
        top: 24px;
        left: 24px;
    }

    .status-card.two {
        right: 22px;
        top: 86px;
    }

    .status-card.three {
        left: 34px;
        bottom: 30px;
    }

    .status-card.four {
        right: 32px;
        bottom: 26px;
    }

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

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

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

    .feature-grid {
        grid-template-columns: 1fr 1fr;
        align-items: stretch;
    }

    .feature-grid.reverse .panel-copy {
        order: 2;
    }

    .feature-grid.reverse .panel-media {
        order: 1;
    }

    .panel-copy {
        padding: 40px;
    }

    .section {
        padding: 56px 0;
    }

    .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) 320px;
        align-items: start;
    }

    .page-main,
    .side-panel {
        padding: 32px;
    }

    .footer-grid {
        grid-template-columns: 1.4fr .7fr .7fr;
    }

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

@media (min-width: 1120px) {
    .site-nav a {
        font-size: 14px;
        padding: 9px 11px;
    }

    .service-index {
        grid-template-columns: 1.2fr 1fr 1fr 1fr;
    }
}