:root {
    --primary: #2980FE;
    --primary-dark: #1267d8;
    --text: #1f2937;
    --muted: #667085;
    --light: #f6f9ff;
    --soft: #eef5ff;
    --border: #e4e9f2;
    --white: #ffffff;
    --gray: #f4f6f8;
    --dark-gray: #344054;
    --shadow: 0 18px 45px rgba(41, 128, 254, .10);
    --radius: 22px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #ffffff 0%, #f7fbff 36%, #ffffff 100%);
    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, .92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.logo,
.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: #111827;
    letter-spacing: -.02em;
}

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

.nav-toggle {
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--dark-gray);
    padding: 9px 13px;
    border-radius: 999px;
    font-weight: 700;
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 10px;
    box-shadow: var(--shadow);
}

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

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

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

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

.narrow-container {
    width: min(860px, calc(100% - 32px));
    margin: 0 auto;
}

.section {
    padding: 56px 0;
}

.gradient-background {
    background: linear-gradient(135deg, #f4f8ff 0%, #ffffff 50%, #eef5ff 100%);
}

.product-hero {
    position: relative;
    padding: 54px 0 36px;
    overflow: hidden;
}

.product-hero::before {
    content: "";
    position: absolute;
    inset: -180px -120px auto auto;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(41,128,254,.18), rgba(41,128,254,0) 68%);
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 34px;
    align-items: center;
}

.eyebrow,
.category-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    border-radius: 999px;
    background: var(--soft);
    color: var(--primary);
    border: 1px solid rgba(41, 128, 254, .16);
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 800;
}

.hero-copy h1,
.page-hero h1 {
    margin: 16px 0 16px;
    line-height: 1.12;
    letter-spacing: -.04em;
    font-size: clamp(34px, 8vw, 64px);
    color: #111827;
}

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

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    min-width: 142px;
    padding: 13px 24px;
    margin-top: 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    border: 1px solid var(--primary);
    box-shadow: 0 12px 26px rgba(41, 128, 254, .24);
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    box-shadow: 0 16px 32px rgba(41, 128, 254, .28);
}

.hero-tags,
.inline-tags {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-tags span,
.inline-tags span {
    border-radius: 999px;
    color: var(--dark-gray);
    background: #f2f6fb;
    border: 1px solid var(--border);
    padding: 7px 11px;
    font-size: 13px;
    font-weight: 650;
}

.app-visual {
    position: relative;
    border-radius: 30px;
    padding: 22px;
    background: linear-gradient(145deg, #ffffff, #eef6ff);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    min-height: 420px;
    display: grid;
    place-items: center;
}

.app-visual img {
    max-height: 520px;
    margin: 0 auto;
    object-fit: contain;
    filter: drop-shadow(0 22px 28px rgba(25, 47, 82, .15));
}

.float-card {
    position: absolute;
    background: rgba(255, 255, 255, .94);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 12px 14px;
    box-shadow: 0 14px 32px rgba(31, 41, 55, .08);
    font-size: 13px;
    color: var(--dark-gray);
}

.float-card strong {
    display: block;
    color: #111827;
    font-size: 15px;
}

.float-card.status { left: 16px; top: 22px; }
.float-card.cold { right: 16px; top: 72px; }
.float-card.swap { left: 20px; bottom: 84px; }
.float-card.dapp { right: 16px; bottom: 26px; }

.feature-shortcuts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.shortcut-card,
.feature-card,
.category-card,
.risk-card,
.faq-item,
.info-card,
.step-card,
.check-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 12px 28px rgba(16, 24, 40, .04);
}

.shortcut-card,
.category-card,
.risk-card,
.faq-item,
.info-card,
.step-card,
.check-card {
    padding: 20px;
}

.shortcut-card .icon-mark {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--soft);
    color: var(--primary);
    font-weight: 900;
    margin-bottom: 12px;
}

.shortcut-card h3,
.category-card h3,
.risk-card h3,
.step-card h3,
.info-card h3,
.check-card h3 {
    margin: 0 0 8px;
    font-size: 18px;
    color: #111827;
}

.shortcut-card p,
.category-card p,
.risk-card p,
.step-card p,
.info-card p,
.check-card p,
.faq-item p,
.product-section p,
.guide-body p {
    margin: 0;
    color: var(--muted);
}

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

.product-section,
.cold-wallet-section,
.swap-section,
.dapp-section {
    padding: 58px 0;
}

.product-panel {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
    border-radius: 30px;
    border: 1px solid var(--border);
    background: var(--white);
    padding: 24px;
    box-shadow: var(--shadow);
}

.product-panel.soft {
    background: linear-gradient(135deg, #f5f9ff, #ffffff);
}

.product-panel .visual-box {
    border-radius: 26px;
    background: #f6f9ff;
    border: 1px solid var(--border);
    padding: 18px;
    min-height: 260px;
    display: grid;
    place-items: center;
}

.product-panel .visual-box img {
    max-height: 420px;
    object-fit: contain;
}

.section-title {
    margin: 0 0 12px;
    font-size: clamp(26px, 5vw, 42px);
    line-height: 1.2;
    color: #111827;
    letter-spacing: -.03em;
}

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

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

.feature-list li::before,
.clean-list li::before {
    content: "";
    width: 9px;
    height: 9px;
    position: absolute;
    left: 2px;
    top: .75em;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(41, 128, 254, .10);
}

.process-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    counter-reset: step;
}

.step-card {
    position: relative;
    overflow: hidden;
}

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

.risk-grid,
.category-grid,
.info-grid,
.check-grid,
.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

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

.risk-card .suggestion {
    margin-top: 10px;
    color: var(--dark-gray);
    background: var(--soft);
    border-radius: 14px;
    padding: 10px 12px;
    font-size: 14px;
}

.category-card {
    background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.faq-item h3 {
    margin: 0 0 10px;
    font-size: 17px;
    color: #111827;
}

.cta-section {
    margin: 56px auto;
    width: min(1180px, calc(100% - 32px));
    text-align: center;
    border-radius: 30px;
    background: linear-gradient(135deg, #eef5ff, #ffffff 42%, #f4f8ff);
    border: 1px solid var(--border);
    padding: 42px 18px;
    box-shadow: var(--shadow);
}

.cta-section h2 {
    margin: 0 0 10px;
    font-size: clamp(26px, 5vw, 40px);
    letter-spacing: -.03em;
}

.cta-section p {
    margin: 0 auto;
    max-width: 720px;
    color: var(--muted);
}

.page-hero {
    padding: 52px 0 26px;
    background: linear-gradient(135deg, #ffffff, #f1f7ff);
    border-bottom: 1px solid var(--border);
}

.page-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 44px 0 64px;
}

.guide-body {
    display: grid;
    gap: 18px;
}

.guide-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 12px 28px rgba(16, 24, 40, .04);
}

.guide-card h2 {
    margin: 0 0 10px;
    color: #111827;
    font-size: 23px;
}

.side-panel {
    align-self: start;
    background: #f8fbff;
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 20px;
    position: sticky;
    top: 92px;
}

.side-panel h2 {
    margin: 0 0 12px;
    font-size: 19px;
}

.side-panel a {
    display: block;
    padding: 10px 0;
    color: var(--primary);
    font-weight: 750;
    border-top: 1px solid var(--border);
}

.download-page-card {
    max-width: 840px;
    margin: 0 auto;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 30px;
    padding: 26px;
    box-shadow: var(--shadow);
    text-align: center;
}

.download-page-card .clean-list {
    text-align: left;
}

.site-footer {
    background: #f5f7fb;
    border-top: 1px solid var(--border);
    color: var(--muted);
}

.footer-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 36px 0;
    display: grid;
    gap: 28px;
}

.footer-brand p {
    max-width: 520px;
    margin: 14px 0 0;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.footer-links strong {
    display: block;
    color: #111827;
    margin-bottom: 10px;
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 16px;
    text-align: center;
    font-size: 13px;
}

@media (min-width: 700px) {
    .feature-shortcuts {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .risk-grid,
    .category-grid,
    .info-grid,
    .check-grid,
    .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .process-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .footer-links {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 960px) {
    .nav-toggle {
        display: none;
    }
    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 2px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }
    .site-nav a {
        padding: 9px 10px;
    }
    .hero-grid {
        grid-template-columns: minmax(0, 1.04fr) minmax(380px, .96fr);
        gap: 54px;
    }
    .product-hero {
        padding: 82px 0 54px;
    }
    .feature-shortcuts {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }
    .product-panel {
        grid-template-columns: 1fr 1fr;
        padding: 36px;
    }
    .product-panel.reverse .visual-box {
        order: -1;
    }
    .category-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .risk-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .process-steps {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .page-layout {
        grid-template-columns: minmax(0, 1fr) 300px;
        gap: 32px;
    }
    .footer-inner {
        grid-template-columns: 1fr 1.25fr;
        align-items: start;
    }
}

@media (max-width: 420px) {
    .feature-shortcuts {
        grid-template-columns: 1fr;
    }
    .float-card {
        position: static;
        margin: 8px;
        width: calc(100% - 16px);
    }
    .app-visual {
        display: block;
        min-height: auto;
    }
}