:root {
    --bg: #0c111d;
    --panel: rgba(255, 255, 255, 0.08);
    --panel-border: rgba(255, 255, 255, 0.16);
    --text: #f7f3e8;
    --muted: #b8c0cf;
    --accent: #7df9c5;
    --accent-2: #ffb86b;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
    background:
        radial-gradient(circle at 20% 20%, rgba(125, 249, 197, 0.22), transparent 32rem),
        radial-gradient(circle at 80% 10%, rgba(255, 184, 107, 0.18), transparent 28rem),
        linear-gradient(135deg, #0c111d 0%, #162033 50%, #101520 100%);
}

body::before {
    position: fixed;
    inset: 0;
    pointer-events: none;
    content: "";
    background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(to bottom, #000, transparent 80%);
}

.shell {
    display: grid;
    place-items: center;
    width: min(1120px, calc(100% - 32px));
    min-height: 100vh;
    margin: 0 auto;
    padding: 48px 0;
}

.hero {
    width: 100%;
    padding: clamp(32px, 7vw, 76px);
    border: 1px solid var(--panel-border);
    border-radius: 34px;
    background: var(--panel);
    box-shadow: 0 30px 100px rgba(0, 0, 0, 0.36);
    backdrop-filter: blur(18px);
}

.badge {
    display: inline-flex;
    margin: 0 0 24px;
    padding: 8px 14px;
    border: 1px solid rgba(125, 249, 197, 0.32);
    border-radius: 999px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    background: rgba(125, 249, 197, 0.08);
}

h1 {
    max-width: 880px;
    margin: 0;
    font-size: clamp(44px, 8vw, 92px);
    line-height: 1.02;
    letter-spacing: -0.06em;
}

.summary {
    max-width: 720px;
    margin: 28px 0 48px;
    color: var(--muted);
    font-size: clamp(18px, 2.2vw, 24px);
    line-height: 1.75;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

article {
    min-height: 210px;
    padding: 24px;
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.07);
}

article span {
    display: block;
    margin-bottom: 42px;
    color: var(--accent-2);
    font-weight: 800;
}

article strong {
    display: block;
    margin-bottom: 12px;
    font-size: 22px;
}

article p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

code {
    padding: 2px 6px;
    border-radius: 6px;
    color: var(--accent);
    background: rgba(0, 0, 0, 0.28);
}

@media (max-width: 820px) {
    .cards {
        grid-template-columns: 1fr;
    }
}