@charset "utf-8";
/* www.changhaihuanbao.com */
/* ==========================================================================
 * page-about.css — 关于我们 v2 模板配套样式
 * @package 昌海环保 / changhai-v3
 * @since   2026-07-27
 *
 * 模块清单：
 *   1. .about-hero         全屏 Hero 区
 *   2. .about-profile      公司简介（左图右文/右图左文切换）
 *   3. .about-stats        核心数据墙（6 项数字）
 *   4. .about-certs        资质证书 grid
 *   5. .about-clients      客户 Logo 墙（grayscale + hover）
 *   6. .about-timeline     垂直发展历程时间线
 *   7. .about-capabilities 核心能力卡片网格
 *   8. .about-gallery      工厂实拍图集
 *   9. .about-testimonials 客户证言卡片
 *   10. .about-cta         行动召唤区
 *
 * 通用：
 *   .img-placeholder      灰色矩形 + 居中标签 + dashed border
 * ========================================================================== */

/* ────────────────────── 0. 通用占位图 ────────────────────── */
.img-placeholder{position:relative;width:100%;background:#f4f4f4;border:2px dashed #c8c8c8;border-radius:6px;color:#888;font-size:14px;display:flex;align-items:center;justify-content:center;min-height:180px;padding:20px;box-sizing:border-box;transition:all .3s ease;text-align:center}
.img-placeholder .placeholder-label{display:block;color:#999;font-style:italic;line-height:1.6}
.img-placeholder:hover{border-color:#0078d7;background:#f0f8ff;color:#0078d7}
.img-placeholder-icon{min-height:80px;min-width:80px;max-width:120px;margin:0 auto 15px;border-radius:50%}

/* ────────────────────── 1. Hero 区 ────────────────────── */
.about-section{padding:60px 0;box-sizing:border-box;position:relative}
.about-hero{padding:0;overflow:hidden;min-height:560px;display:flex;align-items:center;justify-content:center;position:relative;margin-top:94px}
.about-hero-bg{position:absolute;top:0;left:0;width:100%;height:100%;min-height:560px;background:#e8e8e8;border:none;border-radius:0}
.about-hero-bg .placeholder-label{font-size:18px;color:#aaa}
.about-hero-inner{position:relative;z-index:2;text-align:center;width:100%}
.about-hero-text{background:rgba(0,0,0,.45);padding:60px 40px;border-radius:8px;display:inline-block;max-width:1080px;color:#fff;margin:0 auto}
.about-hero-title{font-size:48px;font-weight:700;color:#fff;margin:0 0 16px 0;text-transform:none;letter-spacing:2px}
.about-hero-subtitle{font-size:20px;color:rgba(255,255,255,.9);margin:0 0 40px 0;font-weight:300}
.about-hero-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;margin-top:20px}
.about-hero-stat{flex:0 1 180px;text-align:center;color:#fff;padding:10px}
.about-hero-stat-num{display:block;font-size:42px;font-weight:700;color:#fff;line-height:1.1;margin-bottom:6px}
.about-hero-stat-label{display:block;font-size:14px;color:rgba(255,255,255,.85);font-weight:300}

/* ────────────────────── 2. 公司简介 ────────────────────── */
.about-profile{padding:80px 0}
.about-profile .feature-head{margin-bottom:50px}
.about-profile-row{margin-bottom:40px;display:flex;align-items:center}
.about-profile-row-reverse{flex-direction:row-reverse}
.about-profile-text{padding:0 20px}
.about-profile-text p{font-size:16px;line-height:1.9;color:#444;margin-bottom:16px}
.about-profile-img-wrap{padding:0 20px}
.about-profile-img-wrap .img-placeholder{min-height:380px}

/* ────────────────────── 3. 核心数据墙 ────────────────────── */
.about-stats{background:linear-gradient(135deg,#0078d7 0%,#0067b8 100%);color:#fff;padding:80px 0}
.about-stats .feature-head h2,.about-stats .feature-head p{color:#fff}
.about-stats-grid{margin-top:30px}
.about-stats-item{text-align:center;padding:20px 10px;color:#fff}
.about-stats-item .img-placeholder{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff;margin-bottom:18px}
.about-stats-item .img-placeholder:hover{background:rgba(255,255,255,.2);border-color:#fff}
.about-stats-item .img-placeholder .placeholder-label{color:rgba(255,255,255,.7);font-size:12px}
.about-stats-num{display:block;font-size:42px;font-weight:700;color:#fff;line-height:1.1;margin-bottom:6px}
.about-stats-label{display:block;font-size:14px;color:rgba(255,255,255,.9);font-weight:300}

/* ────────────────────── 4. 资质证书 ────────────────────── */
.about-certs{padding:80px 15px}
.about-certs .feature-head{margin-bottom:50px}
.about-certs-grid{margin-top:20px}
.about-certs-item{text-align:center;margin-bottom:30px;padding:0 10px}
.about-certs-item .img-placeholder{min-height:280px;border-radius:4px;padding:10px}
.about-certs-caption{margin-top:14px;font-size:14px;color:#444;line-height:1.5;min-height:42px}

/* ────────────────────── 5. 客户 Logo 墙 ────────────────────── */
.about-clients{background:#f9f9f9;padding:80px 0}
.about-clients .feature-head{margin-bottom:50px}
.about-clients-grid{margin-top:20px}
.about-clients-item{padding:15px}
.about-clients-item .img-placeholder{min-height:120px;background:#fff;border:1px solid #eaeaea;border-radius:4px;filter:grayscale(100%);opacity:.7;transition:all .3s ease}
.about-clients-item .img-placeholder:hover{filter:grayscale(0);opacity:1;border-color:#0078d7;transform:translateY(-2px)}
.about-clients-item .img-placeholder .placeholder-label{font-size:13px}

/* ────────────────────── 6. 发展历程时间线 ────────────────────── */
.about-timeline{padding:80px 15px;position:relative}
.about-timeline .feature-head{margin-bottom:60px}
.about-timeline-list{position:relative;max-width:900px;margin:0 auto;padding:20px 0}
.about-timeline-list::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:3px;background:#0078d7;transform:translateX(-50%)}
.about-timeline-item{position:relative;width:50%;padding:20px 40px;box-sizing:border-box}
.about-timeline-item:nth-child(odd){left:0;padding-right:60px;text-align:right}
.about-timeline-item:nth-child(even){left:50%;padding-left:60px;text-align:left}
.about-timeline-dot{position:absolute;top:30px;width:18px;height:18px;background:#0078d7;border:4px solid #fff;border-radius:50%;box-shadow:0 0 0 3px #0078d7;z-index:2}
.about-timeline-item:nth-child(odd) .about-timeline-dot{right:-9px}
.about-timeline-item:nth-child(even) .about-timeline-dot{left:-9px}
.about-timeline-card{background:#fff;border:1px solid #eaeaea;border-radius:6px;padding:20px 24px;box-shadow:0 2px 8px rgba(0,0,0,.06);transition:all .3s ease}
.about-timeline-card:hover{box-shadow:0 4px 16px rgba(0,120,215,.15);transform:translateY(-2px);border-color:#0078d7}
.about-timeline-year{display:inline-block;background:#0078d7;color:#fff;font-size:14px;font-weight:700;padding:4px 14px;border-radius:12px;margin-bottom:10px;letter-spacing:1px}
.about-timeline-title{font-size:20px;font-weight:600;color:#333;margin:0 0 10px 0}
.about-timeline-desc{font-size:14px;color:#666;line-height:1.7;margin:0}

/* ────────────────────── 7. 核心能力 ────────────────────── */
.about-capabilities{padding:80px 0;background:#fafafa}
.about-capabilities .feature-head{margin-bottom:50px}
.about-capabilities-grid{margin-top:30px}
.about-cap-item{text-align:center;padding:30px 20px;background:#fff;border-radius:8px;margin-bottom:24px;box-shadow:0 2px 8px rgba(0,0,0,.04);transition:all .3s ease;min-height:240px}
.about-cap-item:hover{box-shadow:0 6px 20px rgba(0,120,215,.12);transform:translateY(-4px)}
.about-cap-item .img-placeholder-icon{margin-bottom:18px}
.about-cap-item h4{font-size:20px;font-weight:600;color:#333;margin:0 0 12px 0}
.about-cap-item p{font-size:14px;color:#666;line-height:1.7;margin:0}

/* ────────────────────── 8. 工厂实拍 ────────────────────── */
.about-gallery{padding:80px 15px}
.about-gallery .feature-head{margin-bottom:50px}
.about-gallery-grid{margin-top:20px}
.about-gallery-item{margin-bottom:24px;padding:0 8px}
.about-gallery-item .img-placeholder{min-height:240px;border-radius:6px;overflow:hidden;cursor:pointer;padding:0}
.about-gallery-item .img-placeholder:hover{border-color:#0078d7;background:#f0f8ff;transform:scale(1.02)}

/* ────────────────────── 9. 客户证言 ────────────────────── */
.about-testimonials{padding:80px 0;background:#f9f9f9}
.about-testimonials .feature-head{margin-bottom:50px}
.about-testimonials-grid{margin-top:30px}
.about-testi-item{background:#fff;padding:30px;border-radius:8px;margin-bottom:24px;box-shadow:0 2px 10px rgba(0,0,0,.05);position:relative;transition:all .3s ease}
.about-testi-item:hover{box-shadow:0 6px 20px rgba(0,120,215,.1);transform:translateY(-2px)}
.about-testi-quote{margin:0;padding:0;border:none;font-size:16px;line-height:1.8;color:#444;font-style:italic;position:relative;padding-left:30px}
.about-testi-quote::before{content:"\201C";position:absolute;left:0;top:-10px;font-size:48px;color:#0078d7;font-family:Georgia,serif;line-height:1}
.about-testi-quote p{margin:0}
.about-testi-author{margin-top:20px;padding-top:16px;border-top:1px solid #eee;text-align:right}
.about-testi-author strong{display:block;font-size:15px;color:#333;font-weight:600;margin-bottom:4px}
.about-testi-author span{font-size:13px;color:#888}

/* ────────────────────── 10. CTA ────────────────────── */
.about-cta{background:linear-gradient(135deg,#0078d7 0%,#005a9e 100%);color:#fff;padding:80px 0;text-align:center}
.about-cta-inner{max-width:800px;margin:0 auto;padding:0 20px}
.about-cta-title{font-size:36px;font-weight:700;color:#fff;margin:0 0 16px 0;letter-spacing:1px}
.about-cta-subtitle{font-size:18px;color:rgba(255,255,255,.9);margin:0 0 40px 0;font-weight:300}
.about-cta-buttons{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.about-cta .btn{display:inline-block;padding:14px 36px;font-size:16px;font-weight:500;border-radius:4px;text-decoration:none;border:2px solid transparent;transition:all .3s ease;cursor:pointer;line-height:1.4;min-width:160px;text-align:center}
.about-cta-btn-primary{background:#fff;color:#0078d7;border-color:#fff}
.about-cta-btn-primary:hover{background:transparent;color:#fff;border-color:#fff}
.about-cta-btn-secondary{background:transparent;color:#fff;border-color:#fff}
.about-cta-btn-secondary:hover{background:#fff;color:#0078d7}

/* ────────────────────── 响应式 ────────────────────── */
@media (max-width:991px){
  .about-hero{min-height:480px}
  .about-hero-bg{min-height:480px}
  .about-hero-title{font-size:36px}
  .about-hero-subtitle{font-size:16px}
  .about-hero-text{padding:40px 24px}
  .about-hero-stat-num{font-size:32px}
  .about-hero-stat{flex:0 1 140px}
  .about-profile-row,.about-profile-row-reverse{flex-direction:column}
  .about-profile-text,.about-profile-img-wrap{padding:10px 15px;width:100%;max-width:100%;flex:0 0 100%}
  .about-profile-img-wrap .img-placeholder{min-height:280px}
  .about-timeline-list::before{left:20px}
  .about-timeline-item{width:100%;padding:15px 15px 15px 50px;text-align:left!important;left:0!important}
  .about-timeline-item:nth-child(odd),.about-timeline-item:nth-child(even){left:0;padding:15px 15px 15px 50px;text-align:left}
  .about-timeline-item:nth-child(odd) .about-timeline-dot,.about-timeline-item:nth-child(even) .about-timeline-dot{left:11px;right:auto}
  .about-cta-title{font-size:28px}
  .about-stats-num{font-size:32px}
}

@media (max-width:767px){
  .about-section{padding:40px 0}
  .about-hero{min-height:420px}
  .about-hero-bg{min-height:420px}
  .about-hero-title{font-size:28px;letter-spacing:1px}
  .about-hero-subtitle{font-size:14px}
  .about-hero-text{padding:30px 16px}
  .about-hero-stat-num{font-size:26px}
  .about-hero-stat-label{font-size:12px}
  .about-hero-stat{flex:0 1 45%}
  .about-hero-stats{gap:16px}
  .about-stats-num{font-size:26px}
  .about-cap-item{min-height:auto;padding:24px 16px}
  .about-cap-item h4{font-size:18px}
  .about-cta{padding:60px 0}
  .about-cta-title{font-size:24px}
  .about-cta-subtitle{font-size:14px}
  .about-cta .btn{padding:12px 24px;font-size:14px;min-width:130px}
}

@media (max-width:480px){
  .about-hero-title{font-size:24px}
  .about-hero-stat{flex:0 1 42%}
  .about-stats-item{padding:15px 6px}
  .about-stats-num{font-size:22px}
  .about-stats-label{font-size:12px}
}