:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-pale: #F4F8FF;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #EEF2F7;
    --gray-200: #E4EAF2;
    --gray-500: #667085;
    --gray-700: #344054;
    --gray-900: #111827;
    --shadow: 0 20px 55px rgba(41, 128, 254, 0.10);
    --soft-shadow: 0 10px 28px rgba(16, 24, 40, 0.06);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    background: linear-gradient(180deg, #FFFFFF 0%, #F6F9FF 38%, #FFFFFF 100%);
    color: var(--gray-900);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

p {
    color: var(--gray-500);
    margin: 0 0 16px;
}

ul, ol {
    margin: 0;
    padding-left: 20px;
    color: var(--gray-500);
}

li + li {
    margin-top: 8px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(228, 234, 242, 0.9);
}

.nav-shell {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand,
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--gray-900);
}

.brand-logo,
.footer-brand img {
    width: 38px;
    height: 38px;
    object-fit: contain;
}

.brand-text {
    font-size: 18px;
}

.nav-toggle {
    display: none;
}

.nav-trigger {
    display: inline-flex;
    width: 42px;
    height: 42px;
    border: 1px solid var(--gray-200);
    border-radius: 14px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    background: var(--white);
    cursor: pointer;
}

.nav-trigger span {
    width: 18px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 999px;
}

.main-nav {
    position: absolute;
    top: 70px;
    left: 16px;
    right: 16px;
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 22px;
    box-shadow: var(--soft-shadow);
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.nav-toggle:checked ~ .main-nav {
    display: grid;
}

.main-nav a {
    padding: 10px 12px;
    border-radius: 14px;
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 650;
}

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

.container,
.launch-hero,
.section,
.footer-grid,
.footer-bottom {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
}

main {
    min-height: 65vh;
}

.launch-hero {
    padding: 54px 0 34px;
    display: grid;
    gap: 34px;
    align-items: center;
}

.hero-copy h1,
.page-hero h1 {
    font-size: clamp(36px, 8vw, 76px);
    line-height: 1.04;
    letter-spacing: -0.06em;
    margin: 16px 0 20px;
    color: var(--gray-900);
}

.hero-copy p,
.page-hero p {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 720px;
}

.eyebrow,
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, 0.16);
    border-radius: 999px;
    padding: 7px 12px;
    font-weight: 800;
    font-size: 13px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.01em;
    box-shadow: 0 12px 30px 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, 0.30);
}

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

.safety-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.safety-tags span,
.tag-pill {
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 999px;
    background: var(--white);
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 700;
}

.app-showcase,
.hero-visual {
    position: relative;
    min-height: 420px;
    display: grid;
    place-items: center;
    border-radius: 36px;
    background:
        radial-gradient(circle at 20% 12%, rgba(41,128,254,0.18), transparent 32%),
        linear-gradient(145deg, #FFFFFF 0%, #EFF6FF 100%);
    border: 1px solid rgba(41,128,254,0.12);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.app-showcase::after,
.hero-visual::after {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    right: -120px;
    bottom: -100px;
    border-radius: 50%;
    background: rgba(41,128,254,0.12);
}

.phone-frame {
    position: relative;
    z-index: 2;
    width: min(78%, 330px);
    filter: drop-shadow(0 28px 36px rgba(41, 128, 254, 0.18));
}

.float-label {
    position: absolute;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 13px;
    border-radius: 999px;
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(228,234,242,0.9);
    color: var(--gray-700);
    font-size: 12px;
    font-weight: 800;
    box-shadow: var(--soft-shadow);
}

.float-label::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
}

.float-one { top: 8%; left: 6%; }
.float-two { top: 26%; right: 4%; }
.float-three { bottom: 22%; left: 5%; }
.float-four { bottom: 9%; right: 8%; }

.section {
    padding: 42px 0;
}

.section-head {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 22px;
}

.section-head h2,
.cta-section h2 {
    font-size: clamp(28px, 5vw, 46px);
    line-height: 1.12;
    letter-spacing: -0.04em;
    margin: 0;
}

.section-head p {
    max-width: 760px;
}

.highlight-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.highlight-card,
.category-card,
.risk-card,
.article-card,
.faq-item,
.mini-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 22px;
    padding: 18px;
    box-shadow: var(--soft-shadow);
}

.highlight-card {
    position: relative;
    min-height: 142px;
}

.highlight-card strong,
.category-card strong,
.risk-card strong,
.mini-card strong {
    display: block;
    color: var(--gray-900);
    margin-bottom: 8px;
    font-size: 17px;
}

.highlight-card span {
    display: inline-flex;
    width: 30px;
    height: 30px;
    border-radius: 11px;
    align-items: center;
    justify-content: center;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 900;
    margin-bottom: 12px;
}

.text-link {
    display: inline-flex;
    margin-top: 8px;
    color: var(--primary);
    font-weight: 800;
}

.launch-card,
.big-feature-card {
    border-radius: 32px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 22px;
    display: grid;
    gap: 22px;
    overflow: hidden;
}

.big-feature-card + .big-feature-card {
    margin-top: 22px;
}

.big-feature-card h2,
.content-panel h2,
.article-card h2 {
    margin: 0 0 14px;
    font-size: clamp(26px, 5vw, 44px);
    line-height: 1.15;
    letter-spacing: -0.04em;
}

.feature-image {
    border-radius: 26px;
    background: linear-gradient(145deg, var(--primary-pale), #FFFFFF);
    border: 1px solid rgba(41, 128, 254, 0.12);
    padding: 20px;
    min-height: 290px;
    display: grid;
    place-items: center;
}

.feature-image img {
    max-height: 420px;
    object-fit: contain;
    filter: drop-shadow(0 22px 34px rgba(41,128,254,0.13));
}

.feature-points {
    display: grid;
    gap: 10px;
    margin: 18px 0 4px;
}

.feature-points span {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--gray-700);
    font-weight: 650;
}

.feature-points span::before {
    content: "";
    flex: 0 0 auto;
    width: 9px;
    height: 9px;
    margin-top: 9px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px var(--primary-soft);
}

.wallet-feature {
    background: linear-gradient(135deg, #FFFFFF 0%, #F7FAFF 100%);
}

.cold-wallet-feature,
.dapp-feature {
    background: linear-gradient(135deg, #F4F8FF 0%, #FFFFFF 100%);
}

.swap-feature {
    background: linear-gradient(135deg, #FFFFFF 0%, #F7FAFF 100%);
}

.app-category-center,
.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.category-card {
    min-height: 160px;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
}

.gradient-background,
.cta-section,
.safety-panel {
    background:
        radial-gradient(circle at top right, rgba(41,128,254,0.16), transparent 30%),
        linear-gradient(135deg, #F7FAFF 0%, #FFFFFF 100%);
    border: 1px solid var(--gray-200);
    border-radius: 32px;
}

.content-container {
    width: min(100% - 32px, 960px);
    margin: 0 auto;
}

.page-hero {
    width: min(100% - 32px, var(--container));
    margin: 0 auto;
    padding: 48px 0 28px;
}

.page-hero-inner {
    border-radius: 34px;
    background:
        radial-gradient(circle at 88% 12%, rgba(41,128,254,0.16), transparent 32%),
        linear-gradient(145deg, #FFFFFF, #F5F9FF);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
    padding: 26px;
}

.article-grid,
.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.article-card h3,
.note-box h3,
.safety-panel h3 {
    margin: 0 0 10px;
    color: var(--gray-900);
    font-size: 20px;
}

.content-panel {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 28px;
    padding: 22px;
    box-shadow: var(--soft-shadow);
}

.note-box,
.tip-box {
    padding: 18px;
    border-radius: 22px;
    background: var(--primary-pale);
    border: 1px solid rgba(41, 128, 254, 0.18);
}

.note-box p,
.tip-box p {
    margin-bottom: 0;
}

.safety-panel {
    padding: 22px;
}

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

.step-card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 22px;
    padding: 18px;
    box-shadow: var(--soft-shadow);
}

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

.step-card h3 {
    margin: 0 0 8px;
    color: var(--gray-900);
}

.risk-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

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

.risk-card em {
    display: inline-flex;
    font-style: normal;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: 999px;
    padding: 4px 9px;
    font-weight: 800;
    font-size: 12px;
    margin-bottom: 10px;
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-item h3,
.faq-item summary {
    margin: 0;
    color: var(--gray-900);
    font-size: 18px;
    font-weight: 850;
}

.faq-item p {
    margin-top: 10px;
    margin-bottom: 0;
}

.faq-item details summary {
    cursor: pointer;
}

.cta-section {
    width: min(100% - 32px, var(--container));
    margin: 36px auto 70px;
    padding: 34px 22px;
    text-align: center;
    box-shadow: var(--shadow);
}

.cta-section p {
    max-width: 700px;
    margin: 12px auto 22px;
}

.check-list {
    display: grid;
    gap: 12px;
    margin-top: 14px;
}

.check-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 14px;
    border-radius: 18px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
}

.check-item::before {
    content: "✓";
    flex: 0 0 auto;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 900;
}

.split-panel {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
    border-radius: 18px;
    font-size: 15px;
}

.info-table th,
.info-table td {
    text-align: left;
    padding: 14px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
}

.info-table th {
    background: var(--primary-soft);
    color: var(--gray-900);
}

.site-footer {
    background: #F3F7FC;
    border-top: 1px solid var(--gray-200);
    padding: 42px 0 26px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.footer-grid p {
    max-width: 340px;
    margin-top: 12px;
}

.footer-grid h3 {
    margin: 0 0 10px;
    font-size: 15px;
    color: var(--gray-900);
}

.footer-grid a:not(.footer-brand) {
    display: block;
    color: var(--gray-500);
    margin: 7px 0;
    font-size: 14px;
}

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

.footer-bottom {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--gray-200);
    color: var(--gray-500);
    font-size: 13px;
}

@media (min-width: 640px) {
    .highlight-bar,
    .app-category-center,
    .category-grid,
    .risk-grid,
    .article-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

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

    .main-nav a {
        padding: 8px 10px;
        font-size: 14px;
    }

    .launch-hero {
        min-height: 720px;
        grid-template-columns: 1.02fr .98fr;
        gap: 56px;
        padding-top: 70px;
    }

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

    .big-feature-card,
    .launch-card {
        grid-template-columns: 1.02fr .98fr;
        align-items: center;
        padding: 34px;
    }

    .big-feature-card.reverse {
        grid-template-columns: .98fr 1.02fr;
    }

    .big-feature-card.reverse .feature-copy {
        order: 2;
    }

    .big-feature-card.reverse .feature-image {
        order: 1;
    }

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

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

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

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

    .split-panel {
        grid-template-columns: 1fr 1fr;
    }

    .page-hero-inner {
        padding: 42px;
    }

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

@media (min-width: 1120px) {
    .main-nav a {
        padding: 9px 12px;
    }

    .hero-copy p,
    .page-hero p {
        font-size: 18px;
    }
}

@media (max-width: 420px) {
    .container,
    .launch-hero,
    .section,
    .page-hero,
    .cta-section,
    .footer-grid,
    .footer-bottom {
        width: min(100% - 24px, var(--container));
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .download-btn {
        width: 100%;
    }

    .app-showcase,
    .hero-visual {
        min-height: 360px;
    }

    .float-label {
        font-size: 11px;
        padding: 8px 10px;
    }
}