:root {
    --bg: #eef4f8;
    --text: #1f2421;
    --muted: #4f5a54;
    --primary: #14532d;
    --primary-2: #0f766e;
    --card: #ffffff;
    --line: #d9ddd6;
    --shadow: 0 12px 30px rgba(13, 39, 24, 0.08);
    --grid: rgba(17, 64, 98, 0.08);
    --glow-a: rgba(21, 99, 180, 0.16);
    --glow-b: rgba(16, 185, 129, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    position: relative;
    margin: 0;
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 12% 10%, rgba(9, 132, 227, 0.1) 0, transparent 34%),
        radial-gradient(circle at 85% 15%, rgba(34, 197, 94, 0.1) 0, transparent 30%),
        var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -2;
}

body::before {
    background:
        linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 42px 42px,
        linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 42px 42px;
    mask-image: radial-gradient(circle at 50% 30%, black 45%, transparent 90%);
}

body::after {
    z-index: -1;
    background:
        radial-gradient(500px 300px at 12% 78%, var(--glow-a), transparent 70%),
        radial-gradient(420px 260px at 88% 22%, var(--glow-b), transparent 72%);
    animation: bg-float 14s ease-in-out infinite alternate;
}

.container {
    width: min(1080px, 92%);
    margin: 0 auto;
}

.hero {
    position: relative;
    padding: 24px 0 72px;
    background:
        radial-gradient(650px 260px at 18% 6%, rgba(14, 116, 144, 0.16), transparent 72%),
        radial-gradient(540px 280px at 92% 18%, rgba(14, 165, 233, 0.12), transparent 72%),
        linear-gradient(135deg, rgba(242, 255, 246, 0.88), rgba(246, 251, 255, 0.84));
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(3px);
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.22;
    background:
        repeating-linear-gradient(
            120deg,
            transparent 0,
            transparent 28px,
            rgba(15, 76, 129, 0.08) 28px,
            rgba(15, 76, 129, 0.08) 29px
        );
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 8px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
}

.brand-logo {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
}

.brand-text {
    font-size: 1.26rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.nav-links {
    display: flex;
    gap: 22px;
}

.nav-links a {
    text-decoration: none;
    color: var(--muted);
    font-weight: 600;
    font-size: 1.04rem;
}

.nav-links a:hover {
    color: var(--primary);
}

.hero-content {
    position: relative;
    margin-top: 72px;
    max-width: 760px;
    padding: 24px 26px 28px;
    border: 1px solid rgba(72, 111, 140, 0.2);
    border-radius: 14px;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.78), rgba(243, 250, 255, 0.72));
    backdrop-filter: blur(4px);
}

.hero-content > * {
    position: relative;
    z-index: 1;
}

.eyebrow {
    display: inline-block;
    margin: 0 0 16px;
    font-size: 0.88rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--primary-2);
    font-weight: 700;
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.15;
}

.lead {
    margin: 22px 0 30px;
    color: var(--muted);
    font-size: 1.08rem;
}

.cta {
    display: inline-block;
    background: linear-gradient(120deg, var(--primary), var(--primary-2));
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    padding: 12px 22px;
    border-radius: 999px;
    box-shadow: var(--shadow);
}

.section {
    padding: 72px 0;
}

.section h2 {
    margin: 0 0 20px;
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.case-card {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.84));
    backdrop-filter: blur(4px);
    box-shadow: var(--shadow);
    margin-bottom: 18px;
}

.case-card h3 {
    margin: 0 0 8px;
    font-size: 1.2rem;
}

.case-card p {
    margin: 0;
    color: #3b4440;
}

.contact a {
    color: var(--primary-2);
    text-decoration: none;
    font-weight: 700;
}

.footer {
    border-top: 1px solid var(--line);
    padding: 24px 0;
    color: #6b746f;
    font-size: 0.92rem;
}

.footer p {
    margin: 0;
}

.beian {
    margin-top: 8px;
}

.beian-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: inherit;
    text-decoration: none;
}

.beian-icon {
    width: 16px;
    height: 16px;
    display: block;
    flex: none;
}

@keyframes bg-float {
    from {
        transform: translate3d(0, 0, 0) scale(1);
        opacity: 0.9;
    }
    to {
        transform: translate3d(0, -16px, 0) scale(1.03);
        opacity: 1;
    }
}


@media (max-width: 760px) {
    .nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 12px;
    }

    .hero-content {
        margin-top: 36px;
    }

    .section {
        padding: 56px 0;
    }

    .brand-logo {
        width: 44px;
        height: 44px;
    }
}