:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-pale: #F5F9FF;
    --white: #FFFFFF;
    --bg: #F6F8FB;
    --bg-soft: #F9FBFE;
    --line: #E5EAF1;
    --text: #1F2937;
    --muted: #5F6B7A;
    --dark: #111827;
    --shadow: 0 18px 45px rgba(31, 41, 55, 0.08);
    --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
    background: var(--bg-soft);
    color: var(--text);
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
}
.logo img { width: 38px; height: 38px; object-fit: contain; border-radius: 12px; }
.nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--dark); border-radius: 10px; }
.site-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.site-nav.is-open { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.site-nav a {
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--muted);
    font-size: 14px;
}
.site-nav a:hover { background: var(--primary-soft); color: var(--primary); }

.container, .page-section {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}
.page-section { padding: 42px 0; }
.section-kicker, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}
.section-title { margin: 12px 0 12px; font-size: clamp(28px, 5vw, 46px); line-height: 1.16; letter-spacing: -0.04em; color: var(--dark); }
.section-lead { color: var(--muted); font-size: 16px; max-width: 760px; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    border: 1px solid var(--primary);
    box-shadow: 0 12px 28px rgba(41, 128, 254, 0.24);
    transition: transform .2s ease, box-shadow .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(41, 128, 254, 0.28); }
.link-more { color: var(--primary); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.link-more::after { content: "›"; font-size: 20px; }

.web3-dashboard-hero {
    background:
        radial-gradient(circle at 18% 8%, rgba(41, 128, 254, .15), transparent 28%),
        linear-gradient(180deg, #FFFFFF 0%, #F4F8FF 100%);
    padding: 42px 0 28px;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
}
.hero-copy { padding: 16px 0; }
.hero-copy h1 { margin: 14px 0; font-size: clamp(36px, 9vw, 66px); line-height: 1.05; letter-spacing: -0.06em; color: var(--dark); }
.hero-copy p { color: var(--muted); font-size: 17px; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 24px; }
.security-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.security-tags span { padding: 8px 12px; border-radius: 999px; background: var(--white); border: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.hero-console {
    position: relative;
    background: rgba(255,255,255,.72);
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 18px;
    box-shadow: var(--shadow);
}
.console-device {
    background: linear-gradient(145deg, #FFFFFF, #EDF5FF);
    border-radius: 26px;
    padding: 18px;
    display: grid;
    place-items: center;
    min-height: 320px;
}
.console-device img { max-height: 360px; object-fit: contain; filter: drop-shadow(0 18px 24px rgba(41,128,254,.12)); }
.status-panel { display: grid; gap: 10px; margin-top: 14px; }
.status-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 18px;
}
.status-card strong { color: var(--dark); }
.status-card span { color: var(--primary); font-size: 13px; font-weight: 700; }

.service-index { padding-top: 44px; }
.service-index-grid, .category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 22px;
}
.service-card, .info-card, .risk-card, .faq-item, .step-card, .feature-card, .aside-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 10px 28px rgba(31, 41, 55, 0.04);
}
.service-card { min-height: 190px; display: flex; flex-direction: column; justify-content: space-between; }
.service-card .tag { color: var(--primary); font-size: 13px; font-weight: 800; }
.service-card h3, .info-card h3, .risk-card h3, .step-card h3 { margin: 10px 0 8px; color: var(--dark); line-height: 1.3; }
.service-card p, .info-card p, .risk-card p, .step-card p { margin: 0 0 12px; color: var(--muted); }

.feature-section {
    border-radius: 30px;
    background: var(--white);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    align-items: center;
}
.feature-copy { padding: 26px; }
.feature-copy h2 { margin: 10px 0 12px; font-size: clamp(26px, 5vw, 40px); line-height: 1.16; color: var(--dark); letter-spacing: -0.04em; }
.feature-copy p { color: var(--muted); }
.feature-list, .check-list { margin: 18px 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.feature-list li, .check-list li {
    position: relative;
    padding-left: 28px;
    color: var(--text);
}
.feature-list li::before, .check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px var(--primary-soft);
}
.feature-visual {
    background: linear-gradient(145deg, #F2F7FF, #FFFFFF);
    min-height: 300px;
    display: grid;
    place-items: center;
    padding: 22px;
}
.feature-visual img { max-height: 360px; object-fit: contain; }
.digital-assets-hub .feature-visual { background: linear-gradient(145deg, #FFFFFF, #EAF3FF); }
.web3-ecosystem-section { background: #FBFDFF; }
.hardware-wallet-section { background: linear-gradient(145deg, #F2F6FB, #FFFFFF); }
.swap-service-section { background: var(--white); }
.privacy-boundary-section, .submit-chain-section, .developer-center-section { background: transparent; }
.boundary-panel, .chain-panel, .developer-panel, .safety-panel {
    border-radius: 30px;
    border: 1px solid var(--line);
    background: linear-gradient(145deg, #FFFFFF, #F3F8FF);
    padding: 24px;
    box-shadow: var(--shadow);
}
.boundary-grid, .chain-grid, .developer-grid, .content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 18px;
}
.boundary-chip { display: inline-flex; padding: 8px 12px; border-radius: 999px; background: var(--white); border: 1px solid var(--line); color: var(--primary); font-weight: 800; font-size: 13px; }
.code-panel {
    background: #F7FAFF;
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 18px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    color: #334155;
    overflow-x: auto;
}
.code-line { display: block; padding: 6px 0; border-bottom: 1px solid #E8EEF6; }
.process-steps { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 22px; counter-reset: step; }
.step-card { position: relative; padding-top: 52px; }
.step-number {
    position: absolute;
    top: 18px;
    left: 20px;
    width: 30px;
    height: 30px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
}
.risk-grid { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 22px; }
.risk-card { border-left: 4px solid var(--primary); }
.risk-card .suggest { margin-top: 10px; padding: 10px 12px; border-radius: 14px; background: var(--primary-pale); color: var(--muted); }
.faq-list { display: grid; gap: 12px; margin-top: 22px; }
.faq-item h3 { margin: 0 0 8px; color: var(--dark); }
.faq-item p { margin: 0; color: var(--muted); }
.cta-section {
    width: min(1160px, calc(100% - 32px));
    margin: 42px auto;
    text-align: center;
    padding: 42px 20px;
    border-radius: 30px;
    background: linear-gradient(135deg, #EEF6FF 0%, #FFFFFF 100%);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.cta-section h2 { margin: 0 0 10px; color: var(--dark); font-size: clamp(26px, 5vw, 40px); }
.cta-section p { margin: 0 auto 22px; color: var(--muted); max-width: 680px; }

.page-hero { padding: 44px 0 18px; background: linear-gradient(180deg, #FFFFFF 0%, #F6FAFF 100%); border-bottom: 1px solid var(--line); }
.page-hero h1 { margin: 14px 0 12px; font-size: clamp(32px, 7vw, 56px); line-height: 1.1; color: var(--dark); letter-spacing: -0.05em; }
.page-hero p { color: var(--muted); max-width: 760px; }
.article-layout { display: grid; grid-template-columns: 1fr; gap: 20px; align-items: start; }
.article-main { display: grid; gap: 18px; }
.article-main h2 { margin: 0 0 8px; color: var(--dark); font-size: 24px; }
.article-main p { margin: 0 0 12px; color: var(--muted); }
.aside-card { position: relative; }
.aside-card h3 { margin-top: 0; }
.aside-card a { display: block; padding: 10px 0; color: var(--primary); font-weight: 700; border-top: 1px solid var(--line); }
.mini-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.notice-box {
    border: 1px solid var(--line);
    border-left: 4px solid var(--primary);
    border-radius: 18px;
    padding: 16px;
    background: var(--primary-pale);
    color: var(--muted);
}
.download-panel { text-align: center; }
.download-panel .download-btn { margin-top: 12px; }

.site-footer { background: #FFFFFF; border-top: 1px solid var(--line); margin-top: 40px; }
.footer-inner {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
.footer-brand p { color: var(--muted); max-width: 460px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.footer-links strong { display: block; margin-bottom: 10px; color: var(--dark); }
.footer-links a { display: block; color: var(--muted); padding: 4px 0; font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--line); padding: 16px; text-align: center; color: var(--muted); font-size: 14px; }

@media (min-width: 700px) {
    .service-index-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
    .risk-grid, .process-steps, .mini-grid { grid-template-columns: repeat(2, 1fr); }
    .status-panel { grid-template-columns: repeat(2, 1fr); }
    .boundary-grid, .chain-grid, .developer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 980px) {
    .nav-toggle { display: none; }
    .site-nav {
        position: static;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 2px;
        padding: 0;
        background: transparent;
        border: 0;
        border-radius: 0;
        box-shadow: none;
    }
    .site-nav a { font-size: 14px; padding: 10px 11px; }
    .web3-dashboard-hero { padding: 72px 0 42px; }
    .hero-grid { grid-template-columns: minmax(0, 1.02fr) minmax(380px, .98fr); gap: 44px; }
    .console-device { min-height: 430px; }
    .service-index-grid { grid-template-columns: repeat(4, 1fr); }
    .service-index-grid .service-card:nth-child(1), .service-index-grid .service-card:nth-child(7) { grid-column: span 2; }
    .feature-grid { grid-template-columns: 1.05fr .95fr; }
    .feature-section.reverse .feature-copy { order: 2; }
    .feature-section.reverse .feature-visual { order: 1; }
    .feature-copy { padding: 42px; }
    .content-grid, .article-layout { grid-template-columns: minmax(0, 1fr) 320px; }
    .process-steps { grid-template-columns: repeat(3, 1fr); }
    .risk-grid { grid-template-columns: repeat(4, 1fr); }
    .boundary-grid, .chain-grid, .developer-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-inner { grid-template-columns: 1fr 420px; align-items: start; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 380px) {
    .header-inner, .container, .page-section, .cta-section { width: min(100% - 22px, 1160px); }
    .site-nav { left: 11px; right: 11px; grid-template-columns: 1fr; }
    .hero-copy h1, .page-hero h1 { letter-spacing: -0.04em; }
    .feature-copy, .boundary-panel, .chain-panel, .developer-panel { padding: 18px; }
}