* {
    box-sizing: border-box;
}

:root {
    --primary: #2980FE;
    --primary-dark: #1267de;
    --primary-soft: #edf5ff;
    --primary-soft-2: #f4f8ff;
    --text: #1f2937;
    --muted: #667085;
    --deep: #111827;
    --line: #e5eaf3;
    --light: #f6f8fb;
    --white: #ffffff;
    --shadow: 0 16px 40px rgba(31, 41, 55, .08);
    --shadow-soft: 0 10px 26px rgba(41, 128, 254, .10);
    --radius-lg: 26px;
    --radius-md: 20px;
    --radius-sm: 16px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background: #fff;
    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, .94);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(229, 234, 243, .85);
}

.header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

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

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

.nav-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: 14px;
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--deep);
    border-radius: 99px;
}

.site-nav {
    position: absolute;
    top: 68px;
    left: 18px;
    right: 18px;
    display: none;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.site-nav.nav-open {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

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

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

.container,
.hero-inner,
.section-inner,
.footer-inner {
    width: min(100% - 36px, 1180px);
    margin: 0 auto;
}

.product-hero {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 85% 18%, rgba(41, 128, 254, .18), transparent 30%),
        linear-gradient(180deg, #f6f9ff 0%, #ffffff 74%);
}

.product-hero::before {
    content: "";
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    left: -180px;
    top: 80px;
    background: rgba(41, 128, 254, .08);
}

.hero-inner {
    position: relative;
    padding: 52px 0 34px;
    display: grid;
    gap: 34px;
}

.eyebrow,
.category-badge {
    display: inline-flex;
    align-items: center;
    width: max-content;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, .18);
    font-size: 13px;
    font-weight: 700;
}

h1,
h2,
h3 {
    color: var(--deep);
    line-height: 1.2;
    margin: 0 0 14px;
    letter-spacing: -.03em;
}

h1 {
    font-size: clamp(34px, 10vw, 66px);
    max-width: 780px;
}

h2 {
    font-size: clamp(26px, 6vw, 42px);
}

h3 {
    font-size: 20px;
}

.hero-copy p,
.section-lead,
.page-summary,
.feature-text p,
.article-body p,
.about-block p,
.download-panel p,
.faq-item p,
.risk-card p,
.step-card p,
.category-card p,
.shortcut-card p {
    color: var(--muted);
    margin: 0;
}

.hero-copy .intro {
    font-size: 17px;
    max-width: 670px;
    margin: 18px 0 24px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 14px 32px rgba(41, 128, 254, .28);
    transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
    border: 0;
    cursor: pointer;
}

.download-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    box-shadow: 0 18px 38px rgba(41, 128, 254, .34);
}

.security-tags,
.inline-tags {
    margin-top: 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.security-tags span,
.inline-tags span,
.mini-label {
    display: inline-flex;
    padding: 7px 11px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: #344054;
    font-size: 13px;
    font-weight: 650;
}

.hero-visual {
    position: relative;
    border-radius: 32px;
    background: linear-gradient(145deg, #ffffff 0%, #eef5ff 100%);
    border: 1px solid rgba(41, 128, 254, .14);
    box-shadow: var(--shadow);
    padding: 24px;
    min-height: 430px;
    display: grid;
    place-items: center;
    overflow: hidden;
}

.hero-visual::after {
    content: "";
    position: absolute;
    inset: 18px;
    border-radius: 28px;
    border: 1px solid rgba(41, 128, 254, .10);
    pointer-events: none;
}

.app-visual {
    max-height: 420px;
    object-fit: contain;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.floating-card,
.floating-tag {
    position: absolute;
    z-index: 2;
    background: rgba(255, 255, 255, .92);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-soft);
    border-radius: 18px;
    padding: 12px 14px;
    color: var(--deep);
    font-size: 13px;
    backdrop-filter: blur(12px);
}

.asset-card {
    left: 18px;
    top: 28px;
    min-width: 145px;
}

.asset-card strong {
    display: block;
    color: var(--primary);
    font-size: 19px;
}

.tag-cold {
    right: 18px;
    top: 72px;
}

.tag-swap {
    left: 28px;
    bottom: 58px;
}

.tag-dapp {
    right: 22px;
    bottom: 28px;
}

.section {
    padding: 54px 0;
}

.section.alt,
.page-shell {
    background: var(--light);
}

.section-head {
    display: grid;
    gap: 8px;
    margin-bottom: 24px;
}

.section-lead {
    max-width: 760px;
}

.feature-shortcuts {
    margin-top: -18px;
    position: relative;
    z-index: 4;
    padding-bottom: 24px;
}

.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.shortcut-card,
.feature-card,
.category-card,
.risk-card,
.step-card,
.info-card,
.faq-item,
.tip-box,
.download-panel,
.about-block,
.check-panel,
.related-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 26px rgba(31, 41, 55, .05);
}

.shortcut-card {
    padding: 16px;
}

.icon-mark {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    color: var(--primary);
    background: var(--primary-soft);
    font-weight: 900;
    margin-bottom: 12px;
}

.shortcut-card h3 {
    font-size: 16px;
    margin-bottom: 6px;
}

.shortcut-card p {
    font-size: 13px;
}

.text-link {
    margin-top: 12px;
    color: var(--primary);
    display: inline-flex;
    font-weight: 750;
    font-size: 14px;
}

.product-section,
.content-section {
    display: grid;
    gap: 26px;
    align-items: center;
}

.product-section.reverse .media-box {
    order: 0;
}

.media-box {
    border-radius: 30px;
    background: linear-gradient(145deg, #f7fbff 0%, #ffffff 100%);
    border: 1px solid var(--line);
    padding: 22px;
    box-shadow: var(--shadow);
}

.media-box img {
    margin: 0 auto;
    max-height: 420px;
    object-fit: contain;
}

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

.feature-text li,
.clean-list li,
.check-list li,
.warning-list li {
    position: relative;
    padding: 12px 14px 12px 38px;
    border-radius: 15px;
    background: var(--primary-soft-2);
    color: #344054;
    border: 1px solid rgba(41, 128, 254, .10);
}

.feature-text li::before,
.clean-list li::before,
.check-list li::before {
    content: "✓";
    position: absolute;
    left: 14px;
    top: 11px;
    color: var(--primary);
    font-weight: 900;
}

.warning-list li::before {
    content: "!";
    position: absolute;
    left: 15px;
    top: 11px;
    color: var(--primary);
    font-weight: 900;
}

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

.step-card {
    padding: 18px;
    position: relative;
    overflow: hidden;
}

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

.risk-grid,
.category-grid,
.faq-grid,
.info-grid,
.related-grid {
    display: grid;
    gap: 14px;
}

.risk-card,
.category-card,
.info-card,
.related-card {
    padding: 18px;
}

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

.risk-card strong,
.category-card strong {
    display: block;
    color: var(--deep);
    margin-bottom: 7px;
    font-size: 18px;
}

.category-card {
    min-height: 180px;
}

.faq-item {
    padding: 18px;
}

.faq-item h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.cta-section {
    padding: 56px 0;
    background:
        radial-gradient(circle at 50% 0%, rgba(41, 128, 254, .16), transparent 36%),
        linear-gradient(180deg, #f5f9ff 0%, #ffffff 100%);
}

.cta-box {
    text-align: center;
    border: 1px solid rgba(41, 128, 254, .16);
    border-radius: 30px;
    background: rgba(255, 255, 255, .86);
    padding: 34px 20px;
    box-shadow: var(--shadow);
}

.cta-box p {
    max-width: 760px;
    margin: 0 auto 22px;
    color: var(--muted);
}

.page-hero {
    padding: 46px 0 30px;
    background:
        radial-gradient(circle at 85% 10%, rgba(41, 128, 254, .16), transparent 28%),
        linear-gradient(180deg, #f6f9ff 0%, #ffffff 100%);
}

.page-hero h1 {
    margin-top: 14px;
    font-size: clamp(32px, 8vw, 54px);
}

.page-summary {
    max-width: 820px;
    font-size: 17px;
}

.article-layout {
    display: grid;
    gap: 20px;
    padding: 34px 0 56px;
}

.article-body,
.article-aside {
    min-width: 0;
}

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

.article-block {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: 0 10px 26px rgba(31, 41, 55, .04);
}

.article-block p + p {
    margin-top: 12px;
}

.article-aside {
    display: grid;
    gap: 16px;
    align-self: start;
}

.tip-box,
.check-panel,
.related-card {
    padding: 18px;
}

.tip-box {
    background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
}

.download-panel {
    padding: 22px;
    text-align: center;
}

.download-panel .download-btn {
    margin-top: 16px;
}

.download-steps {
    counter-reset: downStep;
    display: grid;
    gap: 12px;
    padding: 0;
    margin: 20px 0 0;
    list-style: none;
}

.download-steps li {
    counter-increment: downStep;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 16px 16px 16px 58px;
    position: relative;
}

.download-steps li::before {
    content: counter(downStep);
    position: absolute;
    left: 16px;
    top: 16px;
    width: 30px;
    height: 30px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 900;
}

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

.about-block {
    padding: 22px;
}

.site-footer {
    background: #f7f9fc;
    border-top: 1px solid var(--line);
    padding-top: 42px;
}

.footer-inner {
    display: grid;
    gap: 26px;
}

.footer-brand p {
    max-width: 460px;
    color: var(--muted);
}

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

.footer-links h3 {
    font-size: 15px;
    margin-bottom: 10px;
}

.footer-links a {
    display: block;
    color: var(--muted);
    font-size: 14px;
    margin: 8px 0;
}

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

.footer-bottom {
    border-top: 1px solid var(--line);
    margin-top: 28px;
    padding: 18px;
    text-align: center;
    color: var(--muted);
    font-size: 13px;
}

@media (min-width: 640px) {
    .shortcut-grid,
    .category-grid,
    .risk-grid,
    .faq-grid,
    .info-grid,
    .related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .cta-box {
        padding: 44px;
    }
}

@media (min-width: 920px) {
    .nav-toggle {
        display: none;
    }

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

    .site-nav a {
        padding: 9px 10px;
        white-space: nowrap;
    }

    .hero-inner {
        min-height: 640px;
        grid-template-columns: 1.03fr .97fr;
        align-items: center;
        padding: 72px 0 56px;
    }

    .product-section,
    .content-section {
        grid-template-columns: 1fr 1fr;
        gap: 46px;
    }

    .product-section.reverse .media-box {
        order: 2;
    }

    .shortcut-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }

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

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

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

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

    .article-layout {
        grid-template-columns: minmax(0, 1fr) 330px;
        gap: 26px;
        padding: 46px 0 72px;
    }

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

    .footer-inner {
        grid-template-columns: 1fr 1.2fr;
        align-items: start;
    }

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

@media (min-width: 1120px) {
    .site-nav a {
        padding: 9px 13px;
    }

    .section {
        padding: 72px 0;
    }
}