:root {
    --bg-main: #f4f7f9; 
    --bg-secondary: #ebf0f3;
    --card-bg: #ffffff;
    --primary-blue: #1a2b4b;
    --gold-accent: #d4af37;
    --text-main: #2c3e50;
    --text-light: #5d6d7e;
    --gold-gradient: linear-gradient(135deg, #d4af37, #f1c40f);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    background-image: linear-gradient(to bottom, var(--bg-main), var(--bg-secondary));
    color: var(--text-main);
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    min-height: 100vh;
    line-height: 1.8;
    padding-bottom: 120px;
}

.container {
    max-width: 850px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 文字样式优化 */
.highlight {
    color: #b38f00;
    font-weight: 700;
}

.text-center { text-align: center; }

/* 标题层次优化 */
h1.mentor-name {
    font-size: 3.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-blue);
    letter-spacing: -1px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: var(--primary-blue);
    font-weight: 700;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: var(--gold-accent);
    border-radius: 2px;
}

.content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.card {
    background: var(--card-bg);
    border-radius: 28px;
    padding: 45px 35px;
    box-shadow: 0 20px 40px rgba(26, 43, 75, 0.06);
    position: relative;
    border: 1px solid rgba(0,0,0,0.02);
}

/* 故事板块：居中加强调 */
.story-hook {
    font-size: 1.25rem;
    line-height: 1.9;
    color: var(--primary-blue);
    margin-bottom: 30px !important;
    font-weight: 500;
}

.card p {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 20px;
}

/* 福利列表样式优化 */
.welfare-list {
    margin-top: 35px;
    text-align: left;
}

.welfare-item {
    background: #fdfdfd;
    border: 1px solid #f0f3f5;
    padding: 25px;
    border-radius: 18px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.welfare-item:hover {
    transform: translateY(-5px);
    border-color: var(--gold-accent);
}

.welfare-title {
    font-size: 1.2rem;
    color: #b38f00;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}

.welfare-desc {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.6;
}

hr {
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, #dce3e8, transparent);
    margin: 40px 0;
}

/* 活动板块排版 */
.activity-box {
    background: var(--bg-main);
    padding: 25px;
    border-radius: 20px;
    margin-top: 25px;
    text-align: left;
}

/* 按钮与悬浮条 */
.sticky-cta-container {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    width: 92%;
    max-width: 500px;
    z-index: 2000;
}

@keyframes soft-pulse {
    0% { transform: scale(1); box-shadow: 0 10px 25px rgba(212, 175, 55, 0.3); }
    50% { transform: scale(1.03); box-shadow: 0 20px 40px rgba(212, 175, 55, 0.5); }
    100% { transform: scale(1); box-shadow: 0 10px 25px rgba(212, 175, 55, 0.3); }
}

.whatsapp-btn-sticky {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gold-gradient);
    color: #fff;
    padding: 18px 25px;
    border-radius: 100px;
    font-size: 1.15rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 15px 35px rgba(212, 175, 55, 0.4);
    animation: soft-pulse 3s infinite ease-in-out;
    border: 3px solid #fff;
}

.whatsapp-btn-sticky i {
    margin-right: 12px;
    font-size: 1.6rem;
}

footer {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
    font-size: 0.85rem;
    background: rgba(26, 43, 75, 0.02);
    margin-top: 40px;
}

.img-shadow {
    box-shadow: 0 15px 40px rgba(26, 43, 75, 0.08);
    border: 4px solid #fff;
}