* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
                 "PingFang SC", "Microsoft YaHei", sans-serif;
    background: radial-gradient(circle at top, #0f172a, #020617 70%);
    color: #e5e7eb;
}

/* 容器 */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* 主标题 */
.hero-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.35;
    margin-bottom: 30px;
}

.hero-title span {
    color: #38bdf8;
}

/* 副文案 */
.hero-text {
    font-size: 18px;
    line-height: 1.9;
    color: #cbd5f5;
    margin-bottom: 40px;
}

/* 强调区块 */
.highlight {
    background: linear-gradient(135deg, rgba(56,189,248,0.15), rgba(14,165,233,0.05));
    border: 1px solid rgba(56,189,248,0.35);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 50px;
}

/* 模块标题 */
.section-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 20px;
}

/* 功能列表 */
.features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.feature-item {
    padding: 18px 20px;
    background: rgba(2,6,23,0.65);
    border-radius: 14px;
    border: 1px solid rgba(148,163,184,0.15);
}

.feature-item strong {
    color: #38bdf8;
    font-size: 17px;
}

/* 对比文案 */
.compare {
    margin-top: 60px;
    font-size: 18px;
    line-height: 1.9;
    color: #e2e8f0;
}

/* CTA */
.cta {
    margin-top: 20px;
    text-align: center;
}

.cta button {
    padding: 18px 44px;
    font-size: 20px;
    font-weight: 700;
    border-radius: 999px;
    border: none;
    color: #020617;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    cursor: pointer;
    box-shadow: 0 0 40px rgba(56,189,248,0.5);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cta button:hover {
    transform: scale(1.06);
    box-shadow: 0 0 65px rgba(56,189,248,0.85);
}

.cta-note {
    margin-top: 14px;
    font-size: 14px;
    color: #94a3b8;
}

/* 页脚 */
.footer {
    margin-top: 50px;
    font-size: 13px;
    color: #64748b;
    text-align: center;
}

/* ===== 高科技能量背景 ===== */
.energy-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at center, #020617 0%, #000 70%);
}

/* 能量环 */
.glow-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 900px;
    height: 900px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    filter: blur(2px);
    opacity: 0.35;
}

.ring-1 {
    border: 2px solid rgba(56,189,248,0.4);
    animation: spin 60s linear infinite;
}

.ring-2 {
    width: 700px;
    height: 700px;
    border: 1px dashed rgba(14,165,233,0.45);
    animation: spinReverse 90s linear infinite;
}

.ring-3 {
    width: 520px;
    height: 520px;
    box-shadow:
        0 0 120px rgba(56,189,248,0.6),
        inset 0 0 80px rgba(14,165,233,0.4);
    animation: pulse 6s ease-in-out infinite;
}

/* 粒子层 */
.particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(rgba(56,189,248,0.35) 1px, transparent 1px);
    background-size: 80px 80px;
    animation: drift 40s linear infinite;
    opacity: 0.18;
}

/* 动画 */
@keyframes spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes spinReverse {
    from { transform: translate(-50%, -50%) rotate(360deg); }
    to   { transform: translate(-50%, -50%) rotate(0deg); }
}

@keyframes pulse {
    0%,100% { opacity: 0.35; }
    50% { opacity: 0.75; }
}

@keyframes drift {
    from { background-position: 0 0; }
    to   { background-position: 300px 300px; }
}

/* ===== 资金流动层 ===== */
.capital-flow {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(
            120deg,
            rgba(56,189,248,0.18),
            rgba(14,165,233,0.08),
            rgba(2,6,23,0.0)
        );
    background-size: 400% 400%;
    opacity: 0.22;
    pointer-events: none;
    transition: background-position 0.15s linear;
}
/* ===== 资金雷达扫描 ===== */
.radar {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at center,
            rgba(56,189,248,0.25) 0%,
            rgba(56,189,248,0.08) 35%,
            rgba(2,6,23,0.0) 60%
        );
    overflow: hidden;
    pointer-events: none;
}

.radar::before {
    content: "";
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background: conic-gradient(
        from 0deg,
        rgba(56,189,248,0.0) 0deg,
        rgba(56,189,248,0.35) 25deg,
        rgba(56,189,248,0.0) 50deg
    );
    animation: radarSpin 8s linear infinite;
    mix-blend-mode: screen;
}

@keyframes radarSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}
/* ===========================
   📱 Mobile 优先适配
=========================== */
@media (max-width: 768px) {

    .container {
        padding: 60px 16px;
    }

    .hero-title {
        font-size: 30px;
        line-height: 1.4;
    }

    .hero-text {
        font-size: 16px;
    }

    .section-title {
        font-size: 22px;
    }

    /* 能量背景整体降噪 */
    .energy-bg {
        opacity: 0.85;
    }

    /* 能量环缩小 + 减速 */
    .glow-ring {
        width: 420px;
        height: 420px;
    }

    .ring-1 {
        animation-duration: 90s;
    }

    .ring-2 {
        width: 320px;
        height: 320px;
        animation-duration: 120s;
    }

    .ring-3 {
        width: 220px;
        height: 220px;
        box-shadow:
            0 0 60px rgba(56,189,248,0.45),
            inset 0 0 40px rgba(14,165,233,0.35);
    }

    /* 粒子密度降低 */
    .particles {
        background-size: 140px 140px;
        opacity: 0.12;
    }

    /* 资金流动幅度降低 */
    .capital-flow {
        opacity: 0.16;
    }

    /* 雷达扫描集中在中间 */
    .radar {
        background:
            radial-gradient(circle at center,
                rgba(56,189,248,0.22) 0%,
                rgba(56,189,248,0.08) 28%,
                rgba(2,6,23,0.0) 50%
            );
    }

    .radar::before {
        animation-duration: 12s;
        opacity: 0.55;
    }

    /* CTA 按钮更适合拇指 */
    .cta button {
        width: 100%;
        max-width: 340px;
        padding: 18px 0;
        font-size: 18px;
    }
}
.center-declaration {
    text-align: center;
    font-size: 18px;
    line-height: 1.9;
    color: #cbd5f5;
    margin: 40px auto;
    max-width: 680px;
}
@media (max-width: 768px) {
    .center-declaration {
        font-size: 16px;
        padding: 0 8px;
    }
}

.center-conclusion {
    text-align: center;
    font-size: 20px;
    line-height: 1.9;
    color: #e2e8f0;
    margin: 20px auto;
    max-width: 720px;
}
@media (max-width: 768px) {
    .center-conclusion {
        font-size: 17px;
        padding: 0 10px;
        margin: 20px auto;
    }
}
/* ===== Logo ===== */
.logo-wrap {
    text-align: center;
    margin-bottom: 40px;
}

.logo-wrap img {
    height: 122px;
    opacity: 0.9;
}

/* 手机端更精致 */
@media (max-width: 768px) {
    .logo-wrap {
        margin-bottom: 28px;
    }

    .logo-wrap img {
        height: 122px;
    }
}
.logo-wrap img {
    animation: logoGlow 6s ease-in-out infinite;
}

@keyframes logoGlow {
    0%,100% { filter: drop-shadow(0 0 0 rgba(56,189,248,0)); }
    50% { filter: drop-shadow(0 0 10px rgba(56,189,248,0.6)); }
}