* {
    box-sizing: border-box;
}

:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-lighter: #F4F8FF;
    --white: #ffffff;
    --gray-50: #F7FAFD;
    --gray-100: #EDF2F7;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-500: #64748B;
    --gray-700: #334155;
    --gray-900: #0F172A;
    --shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 12px 30px rgba(41, 128, 254, 0.10);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 18px;
    --container: 1180px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--gray-900);
    background: linear-gradient(180deg, #FFFFFF 0%, #F6F9FE 42%, #FFFFFF 100%);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid rgba(226, 232, 240, 0.86);
    backdrop-filter: blur(14px);
}

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

.header-inner {
    min-height: 68px;
    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(--gray-900);
    letter-spacing: -0.02em;
}

.logo img {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    object-fit: contain;
}

.site-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 16px;
    right: 16px;
    padding: 12px;
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.site-nav.open {
    display: grid;
    gap: 4px;
}

.site-nav a {
    display: block;
    padding: 11px 12px;
    border-radius: 14px;
    color: var(--gray-700);
    font-size: 15px;
}

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

.nav-toggle {
    border: 0;
    background: var(--primary-soft);
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-content: center;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--primary);
    border-radius: 999px;
}

.section,
.page-section {
    padding: 58px 0;
}

.section-head {
    width: min(100%, 780px);
    margin: 0 auto 28px;
    text-align: center;
}

.eyebrow,
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 700;
    font-size: 13px;
    border: 1px solid rgba(41, 128, 254, 0.14);
}

h1,
h2,
h3 {
    margin: 0;
    line-height: 1.16;
    letter-spacing: -0.035em;
}

h1 {
    font-size: clamp(34px, 8vw, 68px);
}

h2 {
    font-size: clamp(28px, 5vw, 44px);
}

h3 {
    font-size: 21px;
}

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

.lead {
    font-size: 18px;
    color: var(--gray-700);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    box-shadow: 0 14px 30px rgba(41, 128, 254, 0.26);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    border: 1px solid rgba(41, 128, 254, 0.2);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 38px rgba(41, 128, 254, 0.30);
}

.app-hero {
    position: relative;
    padding: 58px 0 34px;
    background:
        radial-gradient(circle at 85% 12%, rgba(41, 128, 254, 0.18), transparent 32%),
        linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 100%);
    overflow: hidden;
}

.app-hero::before {
    content: "";
    position: absolute;
    right: -120px;
    top: 120px;
    width: 300px;
    height: 300px;
    border-radius: 999px;
    background: rgba(41, 128, 254, 0.10);
    filter: blur(20px);
}

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

.hero-content {
    display: grid;
    gap: 22px;
}

.hero-content h1 span {
    color: var(--primary);
}

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

.hero-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-soft);
    font-size: 13px;
}

.app-visual {
    position: relative;
    min-height: 430px;
    padding: 22px;
    border-radius: 34px;
    background: linear-gradient(145deg, #FFFFFF 0%, #EEF6FF 100%);
    border: 1px solid rgba(41, 128, 254, 0.14);
    box-shadow: var(--shadow);
    display: grid;
    place-items: center;
}

.app-visual .phone-shot {
    max-height: 420px;
    margin: 0 auto;
    border-radius: 32px;
    filter: drop-shadow(0 24px 38px rgba(15, 23, 42, 0.16));
}

.floating-card {
    position: static;
    width: 100%;
    margin-top: 10px;
    padding: 14px 15px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-soft);
}

.floating-card strong {
    display: block;
    color: var(--gray-900);
}

.floating-card span {
    color: var(--gray-500);
    font-size: 13px;
}

.ability-bar {
    display: grid;
    gap: 12px;
    padding: 12px;
    margin-top: -12px;
    position: relative;
    z-index: 3;
    background: rgba(255,255,255,0.8);
    border: 1px solid var(--gray-200);
    border-radius: 28px;
    box-shadow: var(--shadow-soft);
}

.ability-item {
    padding: 18px;
    border-radius: 20px;
    background: var(--white);
    border: 1px solid var(--gray-200);
}

.ability-item::before {
    content: "";
    display: block;
    width: 34px;
    height: 4px;
    border-radius: 999px;
    background: var(--primary);
    margin-bottom: 12px;
}

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

.feature-card {
    overflow: hidden;
    min-height: 310px;
    display: grid;
    gap: 18px;
    padding: 22px;
    border-radius: var(--radius-xl);
    background: var(--white);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-soft);
}

.feature-card .feature-image {
    min-height: 160px;
    border-radius: 22px;
    background: linear-gradient(135deg, #F4F8FF, #FFFFFF);
    display: grid;
    place-items: center;
    padding: 16px;
}

.feature-card img {
    max-height: 210px;
    object-fit: contain;
}

.link-arrow {
    display: inline-flex;
    width: fit-content;
    color: var(--primary);
    font-weight: 800;
}

.product-panel,
.wallet-panel,
.cold-wallet-panel,
.swap-panel,
.dapp-panel {
    display: grid;
    gap: 26px;
    align-items: center;
    padding: 24px;
    border-radius: 32px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    box-shadow: var(--shadow-soft);
}

.cold-wallet-panel {
    background: linear-gradient(135deg, #F5F9FF 0%, #FFFFFF 70%);
}

.swap-panel {
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFD 100%);
}

.dapp-panel {
    background:
        linear-gradient(135deg, rgba(41,128,254,0.08), transparent 42%),
        #FFFFFF;
}

.panel-copy {
    display: grid;
    gap: 16px;
}

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

.panel-copy li,
.check-list li,
.step-list li {
    position: relative;
    padding: 12px 12px 12px 38px;
    border-radius: 16px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
}

.panel-copy li::before,
.check-list li::before,
.step-list li::before {
    content: "✓";
    position: absolute;
    left: 14px;
    top: 12px;
    color: var(--primary);
    font-weight: 900;
}

.panel-image {
    border-radius: 28px;
    padding: 18px;
    background: var(--primary-lighter);
    border: 1px solid rgba(41, 128, 254, 0.12);
}

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

.process-steps {
    display: grid;
    gap: 14px;
}

.process-step {
    padding: 20px;
    border-radius: 22px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-soft);
}

.step-number {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--primary);
    color: var(--white);
    display: grid;
    place-items: center;
    font-weight: 900;
    margin-bottom: 12px;
}

.risk-grid,
.ecosystem-grid,
.category-grid,
.info-grid {
    display: grid;
    gap: 16px;
}

.risk-card,
.ecosystem-card,
.info-card,
.faq-item,
.guide-card {
    padding: 20px;
    border-radius: 22px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-soft);
}

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

.risk-card strong,
.ecosystem-card strong {
    display: block;
    margin-bottom: 6px;
    color: var(--gray-900);
}

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

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.cta-section {
    padding: 52px 22px;
    border-radius: 34px;
    text-align: center;
    background:
        radial-gradient(circle at 80% 10%, rgba(41,128,254,0.18), transparent 30%),
        linear-gradient(135deg, #F3F8FF 0%, #FFFFFF 100%);
    border: 1px solid rgba(41,128,254,0.16);
    box-shadow: var(--shadow-soft);
}

.cta-section p {
    width: min(100%, 680px);
    margin: 14px auto 22px;
}

.page-hero {
    padding: 48px 0 28px;
    background:
        radial-gradient(circle at 82% 0%, rgba(41, 128, 254, 0.14), transparent 30%),
        linear-gradient(180deg, #FFFFFF 0%, #F6F9FE 100%);
}

.page-hero-inner {
    display: grid;
    gap: 16px;
    width: min(100% - 32px, 880px);
    margin: 0 auto;
}

.content-layout {
    width: min(100% - 32px, 1080px);
    margin: 0 auto;
    display: grid;
    gap: 22px;
    align-items: start;
}

.content-main {
    display: grid;
    gap: 18px;
}

.prose-card {
    padding: 24px;
    border-radius: 26px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-soft);
}

.prose-card p + p {
    margin-top: 14px;
}

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

.notice-box {
    padding: 18px;
    border-radius: 22px;
    background: var(--primary-lighter);
    border: 1px solid rgba(41, 128, 254, 0.16);
}

.notice-box strong {
    color: var(--primary);
}

.download-page-card {
    display: grid;
    gap: 22px;
    text-align: center;
    padding: 28px;
    border-radius: 32px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
}

.download-steps {
    counter-reset: dstep;
    display: grid;
    gap: 14px;
    text-align: left;
}

.download-steps li {
    list-style: none;
    counter-increment: dstep;
    display: flex;
    gap: 12px;
    padding: 16px;
    border-radius: 18px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
}

.download-steps li::before {
    content: counter(dstep);
    flex: 0 0 32px;
    height: 32px;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    display: grid;
    place-items: center;
    font-weight: 900;
}

.site-footer {
    margin-top: 44px;
    padding: 46px 0 22px;
    background: #F7FAFD;
    border-top: 1px solid var(--gray-200);
}

.footer-inner {
    display: grid;
    gap: 28px;
}

.footer-brand {
    display: grid;
    gap: 12px;
}

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

.footer-links {
    display: grid;
    gap: 18px;
}

.footer-links div {
    display: grid;
    gap: 8px;
}

.footer-links strong {
    color: var(--gray-900);
}

.footer-links a {
    color: var(--gray-500);
}

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

.copyright {
    width: min(100% - 32px, var(--container));
    margin: 26px auto 0;
    padding-top: 18px;
    color: var(--gray-500);
    border-top: 1px solid var(--gray-200);
    font-size: 14px;
}

@media (min-width: 640px) {
    .ability-bar,
    .ecosystem-grid,
    .category-grid,
    .info-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

@media (min-width: 880px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
    }

    .site-nav a {
        padding: 9px 12px;
        font-size: 14px;
    }

    .hero-grid {
        grid-template-columns: 1.02fr .98fr;
        gap: 54px;
    }

    .ability-bar {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }

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

    .wallet-panel,
    .cold-wallet-panel,
    .swap-panel,
    .dapp-panel {
        grid-template-columns: 1fr 1fr;
        padding: 34px;
    }

    .cold-wallet-panel .panel-image,
    .dapp-panel .panel-image {
        order: -1;
    }

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

    .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));
    }

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

    .footer-inner {
        grid-template-columns: 1fr 1.3fr;
        align-items: start;
    }

    .floating-card {
        position: absolute;
        width: 190px;
        margin: 0;
    }

    .floating-card.card-assets {
        left: 18px;
        top: 34px;
    }

    .floating-card.card-cold {
        right: 18px;
        top: 86px;
    }

    .floating-card.card-swap {
        left: 30px;
        bottom: 54px;
    }

    .floating-card.card-dapp {
        right: 24px;
        bottom: 28px;
    }
}

@media (min-width: 1120px) {
    .section {
        padding: 76px 0;
    }

    .app-hero {
        padding: 86px 0 50px;
    }

    .feature-card:nth-child(1) {
        grid-column: span 1;
    }
}