* {
    box-sizing: border-box;
}

:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-tint: #F4F8FF;
    --white: #FFFFFF;
    --gray-50: #F7FAFD;
    --gray-100: #EEF3F8;
    --gray-200: #DDE6EF;
    --gray-500: #697586;
    --gray-700: #344054;
    --gray-900: #111827;
    --shadow: 0 18px 50px rgba(17, 24, 39, .08);
    --radius-lg: 32px;
    --radius-md: 24px;
    --radius-sm: 18px;
    --container: 1180px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--gray-900);
    background: linear-gradient(180deg, #F7FAFD 0%, #FFFFFF 34%, #F7FAFD 100%);
    line-height: 1.72;
    overflow-x: hidden;
}

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

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

p {
    margin: 0 0 1rem;
    color: var(--gray-500);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(221, 230, 239, .8);
}

.nav-wrap {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo,
.brand,
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -.02em;
}

.brand img,
.footer-brand img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.nav-toggle {
    border: 1px solid var(--gray-200);
    background: var(--white);
    color: var(--gray-900);
    border-radius: 14px;
    width: 44px;
    height: 44px;
    font-size: 22px;
}

.site-nav {
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

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

.site-nav a {
    padding: 10px 12px;
    border-radius: 14px;
    color: var(--gray-700);
    font-size: 15px;
}

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

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

.section {
    padding: 72px 0;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 28px;
}

.eyebrow,
.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
}

h1,
h2,
h3 {
    margin: 0;
    color: var(--gray-900);
    letter-spacing: -.035em;
    line-height: 1.18;
}

h1 {
    font-size: clamp(2.15rem, 7vw, 4.6rem);
}

h2 {
    font-size: clamp(1.72rem, 4vw, 3rem);
}

h3 {
    font-size: 1.18rem;
}

.lead {
    font-size: clamp(1.02rem, 2.4vw, 1.18rem);
    color: var(--gray-700);
    max-width: 760px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    box-shadow: 0 16px 32px rgba(41, 128, 254, .24);
    transition: transform .2s ease, box-shadow .2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 38px rgba(41, 128, 254, .28);
}

.text-link {
    color: var(--primary);
    font-weight: 800;
}

.web3-hero {
    position: relative;
    padding: 72px 0 48px;
    overflow: hidden;
}

.web3-hero::before {
    content: "";
    position: absolute;
    inset: -220px -120px auto auto;
    width: 540px;
    height: 540px;
    background: radial-gradient(circle, rgba(41, 128, 254, .18), rgba(41, 128, 254, 0) 68%);
    pointer-events: none;
}

.web3-hero::after {
    content: "";
    position: absolute;
    left: -160px;
    top: 130px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(41, 128, 254, .12), rgba(41, 128, 254, 0) 70%);
    pointer-events: none;
}

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

.hero-copy {
    display: grid;
    gap: 20px;
}

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

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

.safety-tags span {
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 999px;
    background: rgba(255, 255, 255, .78);
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 700;
}

.app-visual,
.hero-visual {
    position: relative;
    min-height: 420px;
    display: grid;
    place-items: center;
    padding: 28px;
    border: 1px solid rgba(221, 230, 239, .9);
    border-radius: 36px;
    background:
        linear-gradient(135deg, rgba(41, 128, 254, .08), rgba(255, 255, 255, .96) 45%),
        radial-gradient(circle at 30% 18%, rgba(41, 128, 254, .12), transparent 32%);
    box-shadow: var(--shadow);
}

.hero-visual img {
    max-height: 380px;
    object-fit: contain;
    filter: drop-shadow(0 24px 38px rgba(31, 42, 68, .16));
}

.float-card,
.floating-card {
    position: static;
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    margin-top: 10px;
    padding: 12px 14px;
    border: 1px solid var(--gray-200);
    border-radius: 18px;
    background: rgba(255, 255, 255, .88);
    box-shadow: 0 12px 30px rgba(17, 24, 39, .06);
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 800;
}

.float-card b {
    color: var(--primary);
}

.ecosystem-nav,
.category-grid,
.ecosystem-grid {
    display: grid;
    gap: 14px;
}

.ecosystem-card,
.feature-card,
.info-card,
.risk-card,
.faq-item,
.step-card,
.panel-card,
.category-card {
    border: 1px solid var(--gray-200);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 14px 42px rgba(17, 24, 39, .05);
}

.ecosystem-card {
    padding: 20px;
    display: grid;
    gap: 10px;
    min-height: 180px;
}

.ecosystem-card .tag {
    width: fit-content;
    padding: 6px 10px;
    border-radius: 999px;
    color: var(--primary);
    background: var(--primary-soft);
    font-size: 12px;
    font-weight: 900;
}

.ecosystem-card p,
.feature-card p,
.info-card p,
.risk-card p,
.step-card p,
.panel-card p,
.category-card p {
    margin: 0;
}

.web3-section,
.hardware-wallet-section,
.digital-assets-section,
.swap-section,
.privacy-section,
.submit-chain-section,
.developer-center-section,
.product-section,
.safety-panel {
    padding: 34px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: var(--white);
    box-shadow: var(--shadow);
}

.gradient-background {
    background:
        linear-gradient(135deg, #F4F8FF, #FFFFFF 42%, #EEF6FF),
        radial-gradient(circle at top left, rgba(41, 128, 254, .12), transparent 36%);
}

.split {
    display: grid;
    gap: 28px;
    align-items: center;
}

.section-media {
    padding: 20px;
    border-radius: 28px;
    border: 1px solid var(--gray-200);
    background: linear-gradient(145deg, var(--white), var(--primary-tint));
    min-height: 260px;
    display: grid;
    place-items: center;
}

.section-media img {
    max-height: 330px;
    object-fit: contain;
}

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

.feature-list li,
.check-list li,
.clean-list li {
    position: relative;
    padding-left: 24px;
    color: var(--gray-700);
}

.feature-list li::before,
.check-list li::before,
.clean-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--primary);
}

.service-grid,
.feature-showcase {
    display: grid;
    gap: 18px;
}

.feature-card {
    padding: 24px;
    overflow: hidden;
}

.feature-card img {
    max-height: 220px;
    margin: 18px auto 0;
    object-fit: contain;
}

.privacy-section .privacy-grid,
.submit-chain-section .submit-grid,
.developer-center-section .dev-grid {
    display: grid;
    gap: 18px;
}

.code-card {
    padding: 22px;
    border-radius: 24px;
    background: #F8FBFF;
    border: 1px solid var(--gray-200);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    color: var(--gray-700);
    overflow-x: auto;
}

.code-card span {
    color: var(--primary);
    font-weight: 800;
}

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

.step-card {
    padding: 22px;
}

.step-number {
    display: inline-grid;
    place-items: center;
    width: 36px;
    height: 36px;
    margin-bottom: 12px;
    border-radius: 13px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
}

.risk-grid {
    display: grid;
    gap: 16px;
}

.risk-card {
    padding: 22px;
    border-top: 4px solid var(--primary);
}

.risk-card strong {
    display: block;
    margin-bottom: 8px;
    color: var(--gray-900);
}

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

.faq-item {
    padding: 22px;
}

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

.cta-section {
    padding: 54px 22px;
    border-radius: 34px;
    text-align: center;
    background: linear-gradient(135deg, #EAF3FF, #FFFFFF 55%, #F4F8FF);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
}

.cta-section p {
    max-width: 680px;
    margin: 14px auto 22px;
}

.page-hero {
    padding: 56px 0 34px;
}

.page-hero-card {
    padding: 30px;
    border-radius: 32px;
    background:
        linear-gradient(135deg, rgba(41, 128, 254, .1), rgba(255, 255, 255, .96)),
        var(--white);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
}

.article-layout {
    display: grid;
    gap: 24px;
    padding: 26px 0 72px;
}

.article-main {
    display: grid;
    gap: 20px;
}

.article-block {
    padding: 26px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 36px rgba(17, 24, 39, .04);
}

.article-block h2 {
    font-size: clamp(1.35rem, 3vw, 2rem);
    margin-bottom: 12px;
}

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

.panel-card {
    padding: 22px;
}

.download-line {
    padding-top: 10px;
}

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

.site-footer {
    padding: 54px 0 26px;
    background: #FFFFFF;
    border-top: 1px solid var(--gray-200);
}

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

.footer-grid a:not(.footer-brand) {
    display: block;
    margin-top: 8px;
    color: var(--gray-500);
}

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

.footer-bottom {
    width: min(100% - 32px, var(--container));
    margin: 28px auto 0;
    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: 640px) {
    .ecosystem-nav,
    .category-grid,
    .ecosystem-grid,
    .risk-grid,
    .service-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .download-page-grid {
        grid-template-columns: 1.1fr .9fr;
    }
}

@media (min-width: 860px) {
    .nav-toggle {
        display: none;
    }

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

    .site-nav a {
        padding: 8px 9px;
        font-size: 14px;
    }

    .hero-grid,
    .split,
    .privacy-section .privacy-grid,
    .submit-chain-section .submit-grid,
    .developer-center-section .dev-grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    }

    .hero-grid {
        gap: 54px;
    }

    .web3-section,
    .hardware-wallet-section,
    .digital-assets-section,
    .swap-section,
    .privacy-section,
    .submit-chain-section,
    .developer-center-section {
        padding: 48px;
    }

    .hardware-wallet-section .split,
    .swap-section .split {
        direction: rtl;
    }

    .hardware-wallet-section .split > *,
    .swap-section .split > * {
        direction: ltr;
    }

    .ecosystem-nav {
        grid-template-columns: repeat(7, minmax(0, 1fr));
    }

    .ecosystem-card {
        min-height: 220px;
    }

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

    .service-grid,
    .feature-showcase {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

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

    .article-layout {
        grid-template-columns: minmax(0, 1fr) 320px;
    }

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

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

    .float-card,
    .floating-card {
        position: absolute;
        width: auto;
        max-width: 210px;
        margin-top: 0;
    }

    .float-card.one {
        left: 24px;
        top: 36px;
    }

    .float-card.two {
        right: 18px;
        top: 86px;
    }

    .float-card.three {
        left: 34px;
        bottom: 44px;
    }

    .float-card.four {
        right: 30px;
        bottom: 34px;
    }
}

@media (min-width: 1120px) {
    .site-nav a {
        padding: 9px 12px;
        font-size: 15px;
    }

    .web3-hero {
        padding-top: 94px;
    }
}