/* =========================================================
   GreenFuture 主题 - 解决方案页样式
   用于：templates/front/solutions.html
   依赖：gf/base.css（设计令牌 / 容器 / 按钮 .btn-primary
         / 通用区块 .section / .section-alt / .section-header
         / 内页 Hero .gf-page-hero / 眉标 .gf-page-tag / 滚动渐入 .gf-reveal）
   内容：Hero CTA / 行业方案卡片（6 张）/ 我们的方法（3 步）/ CTA 横幅
   ========================================================= */

/* ===== Hero 咨询按钮行（复用 base.css .btn-primary，仅放大尺寸） ===== */
.sol-hero-actions { margin-top: 30px; display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.sol-hero-actions .btn-primary { padding: 14px 36px; font-size: 14px; }

/* ===== 行业方案卡片（6 张：水泥 / 钢铁 / 电力 / 垃圾焚烧 / 化工 / 液体过滤） ===== */
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 34px 28px; position: relative; overflow: hidden;
    transition: var(--transition);
}
/* 顶部渐变条（悬停展开，与 about 页服务卡同一设计语言） */
.sol-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0); transition: transform 0.4s; transform-origin: left;
}
.sol-card:hover::before { transform: scaleX(1); }
.sol-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.sol-card-icon {
    width: 60px; height: 60px; border-radius: 50%; margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-light), #D1FAE5);
    color: var(--primary-dark); display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.sol-card:hover .sol-card-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
    box-shadow: 0 6px 16px rgba(6,182,212,0.35);
}
.sol-card h3 { font-size: 17px; font-weight: 700; color: var(--secondary); margin-bottom: 10px; }
.sol-card > p { font-size: 13.5px; color: var(--text-muted); line-height: 1.75; margin-bottom: 18px; }
/* 应用场景清单（对勾样式与 base.css .gf-richtext ul 一致） */
.sol-features { border-top: 1px dashed var(--border); padding-top: 16px; }
.sol-features li { position: relative; padding: 5px 0 5px 26px; font-size: 13.5px; color: var(--secondary-light); }
.sol-features li::before {
    content: '✓'; position: absolute; left: 0; top: 5px;
    width: 17px; height: 17px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), #D1FAE5);
    color: var(--accent-dark); font-size: 10px; font-weight: 900;
    display: flex; align-items: center; justify-content: center;
}

/* ===== 我们的方法（3 步：现场评估 / 材料选择 / 性能保证） ===== */
.sol-approach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-approach-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 40px 28px 34px; text-align: center; position: relative;
    transition: var(--transition);
}
.sol-approach-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
/* 步骤序号水印 */
.sol-approach-num {
    position: absolute; top: 14px; right: 22px;
    font-size: 38px; font-weight: 800; line-height: 1; color: var(--primary-light);
}
.sol-approach-icon {
    width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), #D1FAE5);
    color: var(--primary-dark); display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.sol-approach-card:hover .sol-approach-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
    box-shadow: 0 6px 16px rgba(6,182,212,0.35);
}
.sol-approach-card h3 { font-size: 17px; font-weight: 700; color: var(--secondary); margin-bottom: 10px; }
.sol-approach-card p { font-size: 13.5px; color: var(--text-muted); line-height: 1.8; }

/* ===== CTA 横幅（渐变底 + 白字 + 白色按钮，点击打开公共询价弹窗） ===== */
.sol-cta {
    position: relative; overflow: hidden; text-align: center; padding: 84px 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary) 55%, var(--accent));
}
/* 装饰光斑 */
.sol-cta::before, .sol-cta::after {
    content: ''; position: absolute; border-radius: 50%;
    background: rgba(255,255,255,0.12);
}
.sol-cta::before { width: 300px; height: 300px; top: -130px; left: -90px; }
.sol-cta::after  { width: 260px; height: 260px; bottom: -140px; right: -70px; }
.sol-cta .container { position: relative; z-index: 1; }
.sol-cta h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 12px; line-height: 1.25; }
.sol-cta p { font-size: 16px; color: rgba(255,255,255,0.88); margin-bottom: 30px; }
.sol-cta-btn {
    display: inline-block; background: #fff; color: var(--primary-dark);
    padding: 13px 38px; border-radius: 26px; font-size: 14px; font-weight: 800;
    box-shadow: 0 6px 20px rgba(15,23,42,0.18); transition: var(--transition);
}
.sol-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(15,23,42,0.26); }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .sol-grid { grid-template-columns: repeat(2, 1fr); }
    .sol-approach-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
}
@media (max-width: 640px) {
    .sol-grid { grid-template-columns: 1fr; }
    .sol-cta { padding: 60px 0; }
    .sol-cta h2 { font-size: 24px; }
}