@charset "utf-8";

/* ========== 页面Banner ========== */
.songze_page_banner{position:relative;width:100%;overflow:hidden;background:#002f37;}
.songze_page_banner img{width:100%;height:100%;object-fit:cover;}
.songze_page_banner_mask{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,47,55,0.6);z-index:1;}
.songze_page_banner_title{position:absolute;left:10%;top:0;height:100%;display:flex;align-items:center;z-index:2;}
.songze_page_banner_title h1{font-size:46px;line-height:1;color:#fff;font-weight:700;margin-top: 60px;}

/* ========== 通用区块标题 ========== */
.songze_section_head{margin-bottom:30px;}
.songze_section_head h2{font-size:36px;line-height:50px;color:#002f38;font-weight:700;}
.songze_section_head span{background:#27b484;display:block;width:50px;height:3px;margin-top:10px;}
.songze_section_head_center{text-align:center;margin-bottom:40px;}
.songze_section_head_center h2{font-size:36px;line-height:50px;color:#002f38;font-weight:700;}
.songze_section_head_center span{background:#27b484;border-radius:100px;display:block;width:50px;height:3px;margin:10px auto 0 auto;}

/* ========== 企业介绍 ========== */
.songze_about_intro{max-width:1400px;margin:0 auto 0 auto;padding:60px 20px 0 20px;}
.songze_intro_header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;}
.songze_intro_subtitle{font-size:40px;color:#27af78;font-weight:300;line-height:1.5;margin-bottom:8px;}
.songze_intro_title{font-size:40px;color:#27af78;font-weight:700;line-height:1;}
.songze_intro_nav{display:flex;gap:30px;list-style:none;}
.songze_intro_nav li{background:url(../images/g1.svg) no-repeat center left;background-size:20px;padding-left:25px;transition:all 300ms;}
.songze_intro_nav li a{font-size:18px;color:#333;text-decoration:none;padding-bottom:6px;border-bottom:1px solid #999;transition:all 0.3s;}
.songze_intro_nav li.active a{border-bottom:5px solid #27af78;color:#27af78;font-weight:700;}

.songze_intro_year{margin-bottom:50px;line-height:1;}
.songze_intro_year_text{font-size:180px;font-weight:100;color:#27af78;letter-spacing:4px;font-family:'poppins',sans-serif;}
.songze_intro_year_num{font-size:180px;font-weight:700;color:#27af78;margin-left:20px;font-family:'poppins',sans-serif;}

.songze_intro_main{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start;}
.songze_intro_main_left{display:flex;align-items:flex-end;padding-top:150px;}
.songze_intro_main_left img{width:100%;object-fit:cover;background:#002f38;}
.songze_intro_main_right{padding-bottom:80px;color:#555;}
.songze_intro_main_right p{font-size:18px;line-height:1.6;margin-bottom:10px;}

.songze_intro_data{display:flex;gap:40px;margin-top:100px;}
.songze_intro_data_item{flex:1;text-align:left;}
.songze_intro_data_item h3{font-size:70px;font-weight:500;color:#27af78;line-height:1;font-family:'poppins',sans-serif;}
.songze_intro_data_item h3 sup{font-size:18px;font-weight:400;margin-left:2px;top:0;}
.songze_intro_data_item p{font-size:24px;color:#333;margin-top:8px;margin-bottom:0;}

/* ========== 企业实力 ========== */
.songze_strength{width:100%;max-width:2000px;background:linear-gradient(rgba(0,0,0,0.75), rgba(0,0,0,0.75)), url('../images/bg6.jpg') center center no-repeat;background-size:cover;background-attachment:fixed;padding:60px 0 0 0;}
.songze_strength_inner{width:100%;max-width:2000px;min-width:1300px;margin:0 auto;padding:0;}
.songze_strength_title{text-align:center;font-size:46px;font-weight:bold;color:#fff;letter-spacing:2px;border-bottom:1px solid #ffffff33;line-height:1;padding-bottom:30px;margin-bottom:0;}
.songze_strength_cards{display:flex;gap:0;flex-wrap:wrap;justify-content:space-between;height:500px;}
.songze_strength_card{flex:1;padding:0;transition:all 0.3s ease;cursor:pointer;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;align-content:center;}
.songze_strength_card:hover{background:#26b484aa;}
.songze_strength_icon{width:80px;}
.songze_strength_icon img{width:100%;}
.songze_strength_card_title{font-size:36px;font-weight:bold;margin:20px 0;color:#fff;padding-bottom:10px;text-align:center;width:100%;}
.songze_strength_card_text{font-size:18px;color:#e0e0e0;display:none;line-height:1.6;width:80%;animation:fadeIn 0.4s ease forwards;}
.songze_strength_card:hover .songze_strength_card_text{display:block;}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}
.songze_video_link{display:inline-block;margin-top:15px;color:#ffcb00;text-decoration:none;font-weight:bold;}
.songze_video_link:hover{text-decoration:underline;}

/* ========== 企业文化 ========== */
.songze_culture{width:100%;padding:70px 20px;background:url(../images/bg7.jpg) no-repeat center/cover;box-sizing:border-box;}
.songze_culture_title{text-align:center;font-size:46px;color:#000000;margin-bottom:60px;font-weight:bold;letter-spacing:1px;}
.songze_culture_main{max-width:1400px;margin:0 auto;display:flex;gap:60px;align-items:flex-start;background:#fff;padding:50px 50px 50px 80px;}
.songze_culture_nav{width:220px;}
.songze_culture_nav ul{list-style:none;padding:0;margin:0;}
.songze_culture_nav li{padding:25px 0;border-bottom:1px solid #dde2eb;cursor:pointer;font-size:22px;color:#555;transition:0.3s;}
.songze_culture_nav li.active{color:#000;font-weight:bold;padding-left:12px;border-left:8px solid #26b484;}
.songze_culture_nav li:hover{color:#26b484;padding-left:12px;}
.songze_culture_content{flex:1;padding-top:12px;}
.songze_culture_item{display:none;background-repeat:no-repeat;background-position:center;background-size:cover;}
.songze_culture_item.active{display:block;animation:fade 0.4s;padding:40px;height:390px;}
@keyframes fade{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.songze_culture_item_title{font-size:50px;color:#000;margin-bottom:22px;font-weight:bold;}
.songze_culture_item_text{font-size:24px;line-height:1.9;color:#444;}

/* ========== 发展历程时间轴 ========== */
.songze_timeline{width:100%;padding:180px 0 104px;background:url(../public/about-lishi-bg.jpg) no-repeat center/cover;}
.songze_timeline_inner{max-width:1430px;margin:auto;padding:0 30px;}
.songze_timeline_swiper{position:relative;}
.songze_timeline_top{overflow:hidden;}
.songze_timeline_item{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;}
.songze_timeline_left{flex:0 0 35%;display:flex;justify-content:center;align-items:center;flex-direction:column;border-right:1px solid #fff;}
.songze_timeline_year{width:auto;height:auto;font-size:70px;color:#fff;font-weight:500;line-height:2;font-family:poppins;}
.songze_timeline_left p{line-height:1.6;margin-top:15px;font-size:20px;color:#fff;text-align:center;font-weight:300;}
.songze_timeline_right{flex:0 0 65%;color:white;font-size:20px;line-height: 1.6;padding-left:60px;box-sizing: border-box;}
.songze_timeline_thumbs{margin-top:50px;position:relative;overflow:hidden;}
.songze_timeline_thumbs::after{width:100%;height:1px;left:0;top:17px;content:"";position:absolute;border-top:1px #ffffff dashed;}
.songze_timeline_thumb{font-size:24px;color:#fff;position:relative;background:#27b484;border-radius:60px;line-height:1;display:inline-block;vertical-align:middle;padding:10px 30px;border:2px solid white;text-align:center;margin-top:50px;cursor:pointer;}
.songze_timeline_thumb::after{width:10px;height:10px;background-color:#fff;position:absolute;top:-40px;left:50%;transform:translateX(-50%);content:"";border-radius:100px;}
.swiper-slide-thumb-active .songze_timeline_thumb::after{background:url(../images/acti.png);width:28px;height:28px;top:-52px;}
.songze_timeline_prev,.songze_timeline_next{color:#fff !important;top:208px;}
.songze_timeline_prev{left:-19px;}
.songze_timeline_next{right:-19px;}
.songze_timeline_swiper .swiper-button-next::after,.songze_timeline_swiper .swiper-button-prev::after {font-size: 40px;font-weight: bold;}

/* ========== 资质荣誉 ========== */
.songze_qualification{width:100%;padding:60px 20px;background:url('../images/bg5.jpg') center/cover no-repeat;box-sizing:border-box;}
.songze_qualification_title{text-align:center;font-size:34px;color:#222;margin-bottom:45px;font-weight:bold;letter-spacing:1px;}
.songze_qualification_main{max-width:1300px;margin:0 auto;display:flex;align-items:center;gap:0 40px;flex-wrap:wrap;}
.songze_qualification_left{flex:1;min-width:580px;text-align:center;}
.songze_qualification_left img{max-width:80%;height:auto;}
.songze_qualification_right{flex:1;min-width:680px;}
.songze_qualification_right ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px 50px;justify-content:left;padding:0;margin:0;}
.songze_qualification_right li{font-size:20px;color:#333;line-height:1.6;padding-left:26px;position:relative;flex:1 1 40%;}
.songze_qualification_right li::before{content:"●";color:#27b484;position:absolute;left:0;}

/* ========== 轮播通用 ========== */
.songze_swiper_container{max-width:1400px;margin:0 auto;position:relative;padding:0 60px;}
.songze_swiper_prev,.songze_swiper_next{width:48px;height:48px;border-radius:50%;background:#27af78;color:#fff;top:50%;margin-top:-24px;}
.songze_swiper_prev{left:0;}
.songze_swiper_next{right:0;}
.songze_swiper_prev::after,.songze_swiper_next::after{font-size:18px;font-weight:bold;}

/* ========== 荣誉证书轮播 ========== */
.songze_honor_swiper{padding:40px 0;background:#f9f9f9;}
.songze_honor_swiper_box img{width:100%;border:1px solid #eee;}

/* ========== 制造能力轮播 ========== */
.songze_manufacture_swiper{padding:40px 0;}
.songze_manufacture_title{background:#27b484;color:#fff;font-size:24px;line-height:30px;text-align:center;box-sizing:border-box;padding:90px 50px 0 50px;width:auto;height:236px;}
.songze_manufacture_item{width:auto;height:236px;}
.songze_manufacture_item img{height:236px;width:auto;}
.songze_manufacture_item p{font-size:16px;line-height:24px;text-align:center;color:#333;margin-top:8px;}

/* ========== 响应式 992px ========== */
@media (max-width:992px){
    .songze_page_banner{height:240px;}
    .songze_page_banner_title h1{font-size:36px;}
.songze_intro_header{flex-direction:column;align-items:flex-start;gap:20px;}
.songze_intro_year_text,.songze_intro_year_num{font-size:80px;}
.songze_intro_main{grid-template-columns:1fr;gap:40px;}
.songze_intro_main_left img{height:300px;}
    .songze_subnav_inner{flex-direction:column;gap:20px;padding:30px 20px;align-items:flex-start;}
    .songze_subnav_title{font-size:60px;}
    .songze_subnav_list{flex-wrap:wrap;gap:20px;}
    .songze_intro_data{flex-wrap:wrap;}
    .songze_intro_data_item{width:50%;flex:none;border-bottom:2px solid #eee;border-right:none;}
    .songze_intro_data_item:nth-child(2){border-right:2px solid #eee;}
    .songze_strength_cards{height:auto;flex-direction:column;}
    .songze_strength_card{width:100%;padding:40px 20px;}
    .songze_strength_card_text{display:block;}
    .songze_culture_main{flex-direction:column;gap:30px;padding:30px;}
    .songze_culture_nav{width:100%;}
    .songze_timeline{padding:60px 0;}
    .songze_timeline_left{flex:0 0 100%;}
    .songze_timeline_right{flex:0 0 100%;margin-top:30px;}
    .songze_timeline_left i{display:none;}
    .songze_timeline_year{font-size:56px;}
    .songze_timeline_left p{font-size:18px;}
    .songze_timeline_thumbs{margin-top:40px;}
    .songze_qualification_main{flex-direction:column;gap:30px;}
    .songze_qualification_left{min-width:auto;width:100%;}
    .songze_qualification_right{min-width:auto;width:100%;}
    .songze_swiper_container{padding:0 40px;}
}

/* ========== 响应式 768px ========== */
@media (max-width:768px){
    .songze_page_banner{height:200px;}
    .songze_page_banner_title h1{font-size:28px;}
.songze_intro_subtitle{font-size:20px;}
.songze_intro_title{font-size:18px;}
.songze_intro_nav{flex-wrap:wrap;gap:15px;}
.songze_intro_year_text,.songze_intro_year_num{font-size:56px;}
.songze_intro_year_num{margin-left:10px;}
.songze_intro_data{flex-wrap:wrap;gap:20px;}
.songze_intro_data_item{width:30%;flex:none;}
.songze_intro_data_item h3{font-size:36px;}
    .songze_subnav_title{font-size:48px;}
    .songze_subnav_list li a{font-size:16px;}
    .songze_section_head h2{font-size:28px;}
    .songze_section_head_center h2{font-size:28px;}
    .songze_intro_content{font-size:16px;line-height:1.8;}
    .songze_intro_data_item{width:100%;border-right:none !important;}
    .songze_intro_data_item h3{font-size:42px;}
    .songze_strength_title{font-size:32px;}
    .songze_strength_card_title{font-size:28px;}
    .songze_strength_card_text{font-size:16px;width:100%;}
    .songze_culture_title{font-size:32px;margin-bottom:30px;}
    .songze_culture_nav li{font-size:18px;padding:18px 0;}
    .songze_culture_item.active{padding:25px;height:auto;min-height:260px;}
    .songze_culture_item_title{font-size:32px;}
    .songze_culture_item_text{font-size:18px;}
    .songze_timeline_year{font-size:42px;letter-spacing:8px;}
    .songze_qualification_title{font-size:28px;}
    .songze_qualification_right li{font-size:16px;flex:1 1 100%;}
    .songze_manufacture_title{font-size:20px;height:auto;padding:40px 20px;}
    .songze_manufacture_item{height:auto;}
    .songze_manufacture_item img{height:180px;}
    .songze_swiper_prev,.songze_swiper_next{width:36px;height:36px;}
    .songze_swiper_prev::after,.songze_swiper_next::after{font-size:14px;}
}