* {
    box-sizing: border-box;
}

:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-light: #F4F8FF;
    --white: #FFFFFF;
    --gray-50: #F7F9FC;
    --gray-100: #EEF2F7;
    --gray-200: #DCE3EC;
    --gray-500: #64748B;
    --gray-700: #334155;
    --gray-900: #0F172A;
    --radius: 24px;
    --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--gray-700);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 48%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

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

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

.container {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--gray-100);
    backdrop-filter: blur(18px);
}

.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand,
.logo {
    display: flex;
    align-items: center;
}

.brand {
    gap: 10px;
    color: var(--gray-900);
    font-weight: 800;
    letter-spacing: -0.02em;
}

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

.nav-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--gray-200);
    border-radius: 14px;
    background: var(--white);
    color: var(--gray-900);
    font-size: 20px;
    cursor: pointer;
}

.main-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    padding: 14px;
    border: 1px solid var(--gray-100);
    border-radius: 20px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.main-nav.is-open {
    display: grid;
    gap: 8px;
}

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

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

.section {
    padding: 56px 0;
}

.web3-dashboard-hero {
    position: relative;
    overflow: hidden;
    padding: 54px 0 40px;
    background:
        radial-gradient(circle at 14% 16%, rgba(41, 128, 254, 0.14), transparent 28%),
        radial-gradient(circle at 82% 24%, rgba(41, 128, 254, 0.12), transparent 26%),
        linear-gradient(180deg, #FFFFFF 0%, #F4F8FF 100%);
}

.hero-grid,
.split-grid,
.console-grid,
.page-layout,
.footer-grid {
    display: grid;
    gap: 24px;
}

.hero-content,
.hero-visual,
.feature-panel,
.service-card,
.safety-panel,
.page-card,
.faq-item,
.risk-card,
.step-card,
.code-panel,
.cta-section {
    border: 1px solid var(--gray-100);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.hero-content {
    padding: 28px;
}

.kicker,
.category-badge,
.service-tag,
.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: 700;
}

h1,
h2,
h3 {
    color: var(--gray-900);
    line-height: 1.22;
    margin: 0 0 14px;
}

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

h2 {
    font-size: clamp(26px, 5vw, 42px);
    letter-spacing: -0.035em;
}

h3 {
    font-size: 20px;
    letter-spacing: -0.02em;
}

p {
    margin: 0 0 16px;
}

.lead {
    font-size: 17px;
    color: var(--gray-500);
}

.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 12px 26px rgba(41, 128, 254, 0.22);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(41, 128, 254, 0.26);
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.security-tags,
.inline-tags,
.status-list {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.security-tags {
    margin-top: 24px;
}

.security-tags span,
.inline-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 700;
}

.hero-visual {
    position: relative;
    padding: 22px;
    min-height: 420px;
    background: linear-gradient(145deg, #FFFFFF 0%, #EFF6FF 100%);
    overflow: hidden;
}

.product-frame {
    position: relative;
    z-index: 2;
    width: min(78%, 320px);
    margin: 0 auto;
    padding: 16px;
    border-radius: 34px;
    background: #FFFFFF;
    border: 1px solid rgba(41, 128, 254, 0.14);
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.14);
}

.product-frame img {
    width: 100%;
    margin: 0 auto;
}

.status-card {
    position: relative;
    z-index: 3;
    display: grid;
    gap: 6px;
    padding: 12px 14px;
    border: 1px solid rgba(41, 128, 254, 0.16);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.08);
}

.status-card strong {
    color: var(--gray-900);
    font-size: 14px;
}

.status-card span {
    color: var(--gray-500);
    font-size: 12px;
}

.status-list {
    margin-top: 18px;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.service-index {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 24px;
}

.service-card {
    padding: 22px;
    display: grid;
    gap: 10px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
    transform: translateY(-3px);
    border-color: rgba(41, 128, 254, 0.35);
}

.service-card p,
.feature-panel p,
.page-card p,
.risk-card p,
.step-card p,
.faq-item p {
    color: var(--gray-500);
}

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

.digital-assets-hub,
.web3-ecosystem-section,
.hardware-wallet-section,
.swap-service-section,
.privacy-boundary-section,
.submit-chain-section,
.developer-center-section {
    position: relative;
}

.feature-panel {
    padding: 26px;
    overflow: hidden;
}

.feature-panel.soft {
    background: linear-gradient(145deg, #F8FBFF 0%, #FFFFFF 100%);
}

.feature-image {
    padding: 18px;
    border-radius: 28px;
    background: var(--primary-light);
    border: 1px solid var(--gray-100);
}

.feature-image img {
    max-height: 360px;
    margin: 0 auto;
    object-fit: contain;
}

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

.point-list li,
.check-list li,
.info-list li {
    position: relative;
    padding-left: 22px;
    color: var(--gray-700);
}

.point-list li::before,
.check-list li::before,
.info-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
}

.module-head {
    display: grid;
    gap: 10px;
    margin-bottom: 22px;
}

.console-grid {
    grid-template-columns: 1fr;
}

.boundary-strip {
    display: grid;
    gap: 14px;
}

.boundary-item,
.doc-entry,
.eco-entry {
    padding: 18px;
    border-radius: 20px;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
}

.code-panel {
    padding: 22px;
    background: linear-gradient(145deg, #FFFFFF 0%, #F5F9FF 100%);
}

.code-panel pre {
    margin: 0;
    white-space: pre-wrap;
    color: var(--gray-700);
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    border-radius: 18px;
    padding: 16px;
    font-size: 13px;
    line-height: 1.6;
}

.process-steps,
.risk-grid,
.category-grid,
.faq-grid {
    display: grid;
    gap: 16px;
}

.step-card,
.risk-card,
.page-card,
.faq-item {
    padding: 22px;
}

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

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

.cta-section {
    text-align: center;
    padding: 34px 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(41, 128, 254, 0.14), transparent 30%),
        linear-gradient(145deg, #FFFFFF 0%, #F1F7FF 100%);
}

.page-hero {
    padding: 54px 0 26px;
    background:
        radial-gradient(circle at 84% 0%, rgba(41, 128, 254, 0.12), transparent 30%),
        linear-gradient(180deg, #FFFFFF 0%, #F6FAFF 100%);
}

.page-hero-inner {
    max-width: 860px;
}

.page-layout {
    align-items: start;
}

.page-main,
.page-side {
    display: grid;
    gap: 18px;
}

.safety-panel {
    padding: 22px;
    background: linear-gradient(145deg, #FFFFFF 0%, #F6FAFF 100%);
}

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

.faq-item summary {
    cursor: pointer;
    color: var(--gray-900);
    font-weight: 800;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    float: right;
    color: var(--primary);
}

.faq-item[open] summary::after {
    content: "−";
}

.site-footer {
    margin-top: 40px;
    padding: 44px 0 18px;
    background: #0F172A;
    color: #CBD5E1;
}

.footer-brand {
    color: #FFFFFF;
    font-size: 20px;
    font-weight: 900;
    margin-bottom: 10px;
}

.site-footer h3 {
    color: #FFFFFF;
    font-size: 16px;
}

.site-footer a {
    display: block;
    margin: 8px 0;
    color: #CBD5E1;
}

.site-footer a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
    color: #94A3B8;
}

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

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

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

    .main-nav {
        position: static;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 2px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }

    .main-nav a {
        font-size: 14px;
    }

    .hero-grid,
    .split-grid,
    .page-layout {
        grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    }

    .console-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr;
    }

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

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

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

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

    .feature-panel {
        padding: 34px;
    }

    .hero-content {
        padding: 42px;
    }

    .section {
        padding: 74px 0;
    }
}

@media (min-width: 1180px) {
    .web3-dashboard-hero {
        padding: 76px 0 54px;
    }

    .status-card.floating-one {
        position: absolute;
        top: 28px;
        left: 24px;
        width: 180px;
    }

    .status-card.floating-two {
        position: absolute;
        top: 84px;
        right: 22px;
        width: 180px;
    }

    .status-card.floating-three {
        position: absolute;
        bottom: 34px;
        left: 36px;
        width: 190px;
    }

    .status-card.floating-four {
        position: absolute;
        bottom: 46px;
        right: 34px;
        width: 190px;
    }
}