html,
body {
    width: 100%;
    min-height: 100%;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: #e8f0ff;
    font-family: "Inter", "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at 12% 18%, rgba(72, 126, 255, 0.30), transparent 24%),
        radial-gradient(circle at 88% 14%, rgba(0, 217, 255, 0.18), transparent 22%),
        radial-gradient(circle at 50% 100%, rgba(148, 76, 255, 0.18), transparent 30%),
        linear-gradient(180deg, #08101f 0%, #0b1529 42%, #0c1831 100%);
}

a {
    color: inherit;
    text-decoration: none;
    transition: transform .25s ease, opacity .25s ease, border-color .25s ease, background .25s ease;
}

a:hover,
a:focus {
    opacity: .96;
}

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

.landing-shell {
    min-height: 100vh;
}

.landing-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(7, 13, 27, 0.66);
    border-bottom: 1px solid rgba(119, 161, 255, 0.18);
    backdrop-filter: blur(18px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 0;
}

.brand-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: #f5f9ff;
}

.brand-badge,
.eyebrow {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(76, 136, 255, 0.14);
    border: 1px solid rgba(107, 164, 255, 0.24);
    color: #7ed8ff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    justify-content: flex-end;
    color: #c8d7f5;
}

.nav-button,
.primary-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 13px 22px;
    font-size: 14px;
    font-weight: 700;
}

.nav-button,
.primary-btn {
    background: linear-gradient(135deg, #4b7bff, #22b8ff);
    color: #06101f;
    box-shadow: 0 18px 36px rgba(34, 184, 255, 0.20);
}

.secondary-btn {
    border: 1px solid rgba(132, 165, 255, 0.24);
    background: rgba(12, 23, 46, 0.74);
    color: #e8f0ff;
}

.hero-section {
    padding: 76px 0 52px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 28px;
    align-items: center;
}

.hero-copy h1 {
    margin: 18px 0 16px;
    font-size: clamp(36px, 5.4vw, 64px);
    line-height: 1.05;
    letter-spacing: -0.04em;
    color: #f8fbff;
}

.hero-desc,
.section-heading p,
.timeline-item p,
.feature-card p,
.cta-card p,
.metric-card span,
.panel-card p,
.panel-card small,
.footer-inner p {
    color: #9eb2d9;
    line-height: 1.8;
    font-size: 16px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 34px;
}

.metric-card,
.feature-card,
.timeline-item,
.cta-card,
.panel-window {
    background: linear-gradient(180deg, rgba(15, 25, 49, 0.88), rgba(10, 18, 35, 0.78));
    border: 1px solid rgba(120, 156, 255, 0.16);
    box-shadow: 0 26px 54px rgba(4, 10, 24, 0.34);
}

.metric-card {
    border-radius: 24px;
    padding: 18px;
}

.metric-card strong {
    display: block;
    font-size: 20px;
    margin-bottom: 8px;
    color: #f8fbff;
}

.hero-panel {
    position: relative;
}

.hero-panel::before {
    content: "";
    position: absolute;
    inset: -20px -10px auto auto;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(34, 184, 255, 0.28), transparent 70%);
    filter: blur(10px);
    pointer-events: none;
}

.panel-window {
    border-radius: 30px;
    overflow: hidden;
}

.panel-top {
    display: flex;
    gap: 8px;
    padding: 16px 20px;
    background: rgba(10, 19, 38, 0.92);
    border-bottom: 1px solid rgba(120, 156, 255, 0.12);
}

.panel-top span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #5ed5ff, #4b7bff);
}

.panel-body {
    padding: 22px;
    background:
        linear-gradient(180deg, rgba(10, 19, 38, 0.92), rgba(8, 15, 29, 0.96));
}

.panel-card {
    border-radius: 22px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(120, 156, 255, 0.14);
}

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

.panel-card strong {
    display: block;
    margin: 8px 0 10px;
    font-size: 20px;
    color: #f8fbff;
}

.panel-card.focus {
    background: linear-gradient(135deg, rgba(75, 123, 255, 0.22), rgba(34, 184, 255, 0.12));
}

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

.panel-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(75, 123, 255, 0.14);
    color: #7ed8ff;
    font-size: 13px;
    font-weight: 700;
    border: 1px solid rgba(120, 156, 255, 0.16);
}

.section-block {
    padding: 46px 0;
}

.section-block.alt {
    background: linear-gradient(180deg, rgba(8, 14, 26, 0.68), rgba(12, 22, 40, 0.58));
    border-top: 1px solid rgba(120, 156, 255, 0.10);
    border-bottom: 1px solid rgba(120, 156, 255, 0.10);
}

.section-heading {
    max-width: 780px;
    margin-bottom: 28px;
}

.section-heading h2,
.cta-card h2 {
    margin: 16px 0 12px;
    font-size: clamp(28px, 3.8vw, 44px);
    line-height: 1.18;
    color: #f8fbff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.feature-card {
    border-radius: 28px;
    padding: 24px;
}

.feature-card h3,
.timeline-item h3 {
    margin: 0 0 10px;
    font-size: 22px;
    color: #f8fbff;
}

.timeline {
    display: grid;
    gap: 16px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 84px 1fr;
    gap: 18px;
    align-items: start;
    border-radius: 28px;
    padding: 24px;
}

.timeline-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(75, 123, 255, 0.25), rgba(34, 184, 255, 0.18));
    color: #8be2ff;
    font-weight: 800;
    font-size: 22px;
    border: 1px solid rgba(120, 156, 255, 0.16);
}

.cta-block {
    padding-bottom: 72px;
}

.cta-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-radius: 34px;
    padding: 34px;
}

.cta-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.landing-footer {
    padding: 24px 0 38px;
    border-top: 1px solid rgba(120, 156, 255, 0.12);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

@media (max-width: 960px) {
    .hero-grid,
    .feature-grid,
    .hero-metrics {
        grid-template-columns: 1fr;
    }

    .cta-card {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 720px) {
    .header-inner,
    .header-nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .hero-section {
        padding-top: 48px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .timeline-index {
        width: 58px;
        height: 58px;
        border-radius: 18px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}