/* 核心痛点 start*/
.pain-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.8rem;
    margin-bottom: 3rem;
}

.pain-card {
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
}

/* 核心痛点 end*/

/* 表单 start */
.form-section {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: clamp(2rem, 4vw, 3.5rem);
    max-width: 720px;
    margin: 2rem auto 0;
    border: 1px solid var(--border-light);
}

.form-title {
    color: var(--primary);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
    display: block;
}

.form-input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: 50px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
    background: var(--surface);
}

/* 表单 end */

/* 绿证价值，绿证 × 绿色工厂  绿证 × 零碳工厂 start*/
.list-check {
    list-style: none;
    margin: 1.2rem 0;
}

.list-check li {
    padding-left: 1.8rem;
    position: relative;
    margin: 0.7rem 0;
}

.list-check li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
    font-size: 1.2rem;
}

/* 绿证价值，绿证 × 绿色工厂  绿证 × 零碳工厂 end*/

/* 世通解决方案 start */
.process {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.process-step {
    position: relative;
    padding: 2rem 1.5rem 1.5rem;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 1.5rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

/* 世通解决方案 end */

/* 企业绿证需求测算工具 start */
.tool-section {
    background: var(--primary-light);
    border-radius: var(--radius-xl);
    padding: 2rem 1.5rem;
}

.tool-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.tool-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    font-size: 1rem;
    background: white;
}

.result-demo {
    background: var(--surface);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-top: 1.5rem;
}

/* 企业绿证需求测算工具 end */

/* 为什么选择世通 start */
.advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* 为什么选择世通 end */

/* 获取《绿证需求评估与申报支撑建议》 start */
.cta-section {
    background: var(--primary);
    color: white;
    padding: 2rem 1.5rem;
    border-radius: var(--radius-xl);
    text-align: center;
}

.cta-section .list-check li {
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%23ffffff" stroke-width="2.5"><polyline points="20 6 9 17 4 12"></polyline></svg>') left center no-repeat;
    background-size: 16px;
}

.cta-btn-primary {
    background: white;
    color: var(--primary);
}

.cta-btn-outline {
    border: 2px solid white;
    color: white;
    background: transparent;
}

.contact-section {
    background: var(--surface);
    border-top: 1px solid var(--border-light);
    padding: 3rem 0;
}

/* 获取《绿证需求评估与申报支撑建议》 end */

/* 零碳工厂绿证10大核心问题 start */
.faq-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.8rem;
    margin-top: 2.5rem;
}

.faq-item {
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    background-color: var(--primary-light); /* 新增：轻量背景色，与主题呼应 */
    transition: all 0.3s ease;
}

.faq-question {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: "+";
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    transition-delay: 0s; /* 默认无延迟 */
}

/* 鼠标移入添加hovering类后，延迟300ms展开 */
.faq-item.hovering .faq-answer {
    max-height: 500px;
    opacity: 1;
    transition-delay: 0.3s; /* 核心：展开延迟300ms */
}

/* 零碳工厂绿证10大核心问题 end */