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

body {
    font-family: "Segoe UI", Arial, sans-serif;
    color: #1f2937;
    background: #ffffff;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    display: block;
    width: 100%;
}

/* ===== Container ===== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

/* ===== Header ===== */
header {
    background: #fff;
    border-bottom: 1px solid #eee;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-weight: 700;
    font-size: 20px;
    color: #2F5BFF;
}

.nav-menu {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-menu a {
    font-size: 14px;
}

.nav-menu a.active {
    color: #2F5BFF;
    border-bottom: 2px solid #2F5BFF;
}

/* ===== Buttons ===== */
.btn {
    padding: 10px 22px;
    border-radius: 25px;
    font-size: 14px;
    display: inline-block;
}

.btn-danger {
    background: #E63946;
    color: #fff;
}

.btn-primary {
    background: #2F5BFF;
    color: #fff;
}

/* ===== HERO（最终版） ===== */
.hero-full {
    position: relative;
    background: #ffffff;
    height: 560px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 3;
}

.hero-left {
    max-width: 520px;
}

.hero-left h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 15px;
}

.subtitle {
    margin-bottom: 10px;
    font-weight: 500;
}

.desc {
    font-size: 14px;
    margin-bottom: 20px;
}

/* 右侧图片 */
.hero-image-full {
    position: absolute;
    right: 0;
    top: 0;
    width: 70%;
    height: 100%;
    z-index: 1;
}

.hero-image-full img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 渐变融合（核心） */
.hero-full::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 2;

    background: linear-gradient(
        to right,
        #ffffff 0%,
        #ffffff 28%,
        rgba(255,255,255,0.95) 40%,
        rgba(255,255,255,0.75) 50%,
        rgba(255,255,255,0.45) 60%,
        rgba(255,255,255,0.15) 70%,
        rgba(255,255,255,0.05) 78%,
        rgba(255,255,255,0) 85%
    );
}

/* ===== Trust Bar ===== */
.trust-bar {
    background: #fff;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    padding: 25px 0;
}

.trust-grid {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

/* ===== Sections ===== */
.section {
    padding: 60px 0;
}

.section h2 {
    text-align: center;
    margin-bottom: 30px;
}

/* ===== Cards ===== */
.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    align-items: center;
}
.card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #eee;
    text-align: center;
}

/* ===== Footer ===== */
footer {
    background: #1f2937;
    color: #fff;
    padding: 50px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

footer a {
    display: block;
    color: #ccc;
    margin-bottom: 8px;
}

.footer-bottom {
    text-align: center;
    margin-top: 20px;
    border-top: 1px solid #444;
    padding-top: 10px;
}

/* ===== Responsive ===== */
@media(max-width:768px) {
    .nav-menu {
        display: none;
    }

    .hero-full {
        height: auto;
        padding: 60px 0;
    }

    .hero-image-full {
        position: relative;
        width: 100%;
        height: 300px;
    }

    .hero-full::before {
        display: none;
    }

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

    .trust-grid {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}
.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    align-items: center;
}
.section .container {
    max-width: 1000px;
}