:root {
    --hot-red: #ff1e4e;
    --hot-red-deep: #c4002e;
    --hot-pink: #ff4d8a;
    --gold: #ffd100;
    --orange: #ff6a00;
    --live: #00e676;
    --bg: #12060b;
    --bg-2: #1c0a12;
    --card: #261018;
    --line: rgba(255, 209, 0, 0.18);
    --text: #fff7f2;
    --muted: #d7b8c2;
    --white: #ffffff;
    --radius: 14px;
    --shadow: 0 12px 40px rgba(255, 30, 78, 0.22);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 999px;
    padding: 12px 22px;
    font-weight: 700;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.btn-primary {
    color: #2a0a10;
    background: linear-gradient(90deg, var(--gold), var(--orange));
    box-shadow: 0 0 24px rgba(255, 209, 0, 0.35);
}

.btn-primary:hover { transform: translateY(-2px) scale(1.02); }

.btn-ghost {
    color: var(--white);
    background: transparent;
    border: 1px solid var(--gold);
}

.btn-ghost:hover { background: rgba(255, 209, 0, 0.12); }

.btn-lg { padding: 16px 28px; font-size: 18px; }

.live-ticker {
    background: linear-gradient(90deg, #7a001c, #c4002e 40%, #ff6a00);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    overflow: hidden;
    white-space: nowrap;
}

.live-ticker p {
    padding: 8px 0;
    animation: ticker 22s linear infinite;
}

@keyframes ticker {
    from { transform: translateX(8%); }
    to { transform: translateX(-80%); }
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(18, 6, 11, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}

.nav-wrap {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 20px;
}

.logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--hot-red), var(--orange));
    box-shadow: 0 0 16px rgba(255, 30, 78, 0.55);
}

.nav-menu { display: flex; gap: 18px; flex-wrap: wrap; }

.nav-menu a { color: var(--muted); font-size: 14px; font-weight: 600; }
.nav-menu a:hover,
.nav-menu a.active { color: var(--gold); }

.nav-actions { display: flex; gap: 10px; }

.nav-toggle { display: none; }
.nav-burger {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid var(--line);
    align-items: center;
    justify-content: center;
    color: var(--gold);
}

.hero {
    position: relative;
    padding: 56px 0 40px;
    overflow: hidden;
    background:
        radial-gradient(circle at 15% 20%, rgba(255, 30, 78, 0.35), transparent 32%),
        radial-gradient(circle at 85% 10%, rgba(255, 209, 0, 0.18), transparent 28%),
        var(--bg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 36px;
    align-items: center;
}

.live-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(255, 30, 78, 0.2);
    color: var(--gold);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 14px;
}

.live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--live);
    box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7);
    animation: pulse 1.4s infinite;
}

@keyframes pulse {
    70% { box-shadow: 0 0 0 10px rgba(0, 230, 118, 0); }
}

.hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.15;
    margin-bottom: 16px;
}

.hero-kicker {
    color: var(--gold);
    font-weight: 800;
    margin-bottom: 12px;
}

.hero p { color: var(--muted); font-size: 17px; margin-bottom: 22px; }

.hot-panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.hot-meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: 13px;
    margin-top: 12px;
}

.hero-visual img {
    width: 100%;
    border-radius: 20px;
    border: 2px solid var(--gold);
    box-shadow: var(--shadow);
}

.data-band {
    background: linear-gradient(90deg, #ff1e4e, #ff6a00);
    padding: 28px 0;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    text-align: center;
}

.data-num { font-size: 32px; font-weight: 800; color: #fff; }
.data-label { font-size: 14px; color: #ffe9c4; }

.section { padding: 72px 0; }
.section.alt { background: var(--bg-2); }

.section-head { text-align: center; margin-bottom: 36px; }
.section-head h2 { font-size: 32px; margin-bottom: 10px; }
.section-head p { color: var(--muted); }

.feature-grid,
.solution-grid,
.price-grid,
.dl-list {
    display: grid;
    gap: 18px;
}

.feature-grid { grid-template-columns: repeat(3, 1fr); }
.solution-grid,
.price-grid { grid-template-columns: repeat(3, 1fr); }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
}

.card:hover { border-color: var(--gold); transform: translateY(-3px); transition: .2s ease; }

.card h3 { margin: 10px 0; font-size: 20px; }
.card p { color: var(--muted); font-size: 14px; }
.icon { font-size: 28px; }

.solution-card { overflow: hidden; padding: 0; }
.solution-card img { height: 180px; width: 100%; object-fit: cover; }
.solution-card div { padding: 18px; }

.price-card.hot {
    border-color: var(--gold);
    box-shadow: var(--shadow);
    position: relative;
}

.badge {
    position: absolute;
    top: -12px;
    right: 16px;
    background: var(--hot-red);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 999px;
}

.price { font-size: 28px; color: var(--gold); font-weight: 800; margin: 8px 0 14px; }

.cta {
    padding: 70px 0;
    text-align: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(255, 209, 0, 0.18), transparent 45%),
        #240810;
}

.cta h2 { font-size: 34px; margin-bottom: 12px; }
.cta p { color: var(--muted); margin-bottom: 22px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.site-footer {
    background: #0a0407;
    padding: 48px 0 20px;
    border-top: 1px solid var(--line);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-grid h4 { color: var(--gold); margin-bottom: 12px; }
.footer-grid a, .footer-grid p { color: var(--muted); display: block; margin-bottom: 8px; font-size: 14px; }
.footer-bottom { text-align: center; color: #8a6d76; font-size: 13px; border-top: 1px solid #2a1520; padding-top: 16px; }

.page-hero { padding: 42px 0 10px; text-align: center; }
.page-hero h1 { font-size: 36px; margin-bottom: 10px; }
.page-hero p { color: var(--muted); }

.dl-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 22px;
}

.dl-item.hot { border-color: var(--gold); box-shadow: var(--shadow); }
.dl-item h3 { margin-bottom: 8px; }
.dl-item p, .specs { color: var(--muted); font-size: 14px; }
.specs { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.specs span {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 2px 8px;
}

.help-list { display: grid; gap: 16px; max-width: 860px; margin: 0 auto; }
.help-box { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.help-box h3 { color: var(--gold); margin-bottom: 10px; }
.help-box p { color: var(--muted); margin-bottom: 10px; }

.shot { margin: 28px auto 0; max-width: 860px; }
.shot img { border-radius: 16px; border: 1px solid var(--line); }

@media (max-width: 992px) {
    .nav-burger { display: flex; }
    .nav-toggle:checked + .nav-burger + .nav-menu { display: flex; }
    .nav-menu {
        display: none;
        position: absolute;
        left: 16px;
        right: 16px;
        top: 120px;
        background: #2a1018;
        border: 1px solid var(--line);
        border-radius: 12px;
        padding: 14px;
        flex-direction: column;
    }
    .hero-grid,
    .feature-grid,
    .solution-grid,
    .price-grid,
    .footer-grid,
    .data-grid { grid-template-columns: 1fr; }
    .data-grid { grid-template-columns: 1fr 1fr; }
    .dl-item { flex-direction: column; text-align: center; }
    .nav-actions .btn-ghost { display: none; }
}