/* ================================================================
   【页面】关于我们页
   【模块】文件头部
   【用途】整体页面容器 + 复用区块头样式（标题/副标题/浅色变体）
   【关键属性】overflow: hidden 防止内部动画溢出；区块头含 h2 42px 粗体 + p 22px 浅灰
   ================================================================ */
.nl-about-page { overflow: hidden; }

/* 【页面】关于我们页 | 【模块】区块头 | 通用区块标题组件，含浅色变体（深色背景上使用） */
.ab-sec-head { margin-bottom: 40px; }
.ab-sec-head h2 { font-size: 42px; font-weight: 700; color: #2d2d2d; letter-spacing: 2px; }
.ab-sec-head p { font-size: 22px; color: #555; margin-top: 10px; }
.ab-sec-head--light h2 { color: #fff; }
.ab-sec-head--light p { color: rgba(255, 255, 255, .8); }

/* ================================================================
   【页面】关于我们页
   【模块】1. 顶部横幅（广告位「关于我们banner」轮播）
   【用途】默认 about_banner.png 兜底；广告位模式 4 图叠放淡入 + 小圆点切换，左对齐白字随图更新
   【关键属性】height:620px；background:cover；标题56px白字；副标题22px半透明白
   【交互】标题延时0.8s淡入上滑，副标题延时1.4s淡入上滑，使用 nlRevealUp 动画
   ================================================================ */
.ab-banner {
    height: 620px; position: relative;
    background: url(../images/about/about_banner.png) center / cover no-repeat;
    display: flex; align-items: center;
    overflow: hidden;
}
/* 自定义导航Banner图（无广告位兜底）：原图直出，不加暗化 */
.ab-banner--img { background-size: cover; background-position: center; }
/* 广告位轮播模式 */
.ab-banner--slider { background: #10281d; }
.ab-banner__slides { position: absolute; inset: 0; z-index: 0; }
.ab-banner__slide {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    opacity: 0; transition: opacity .9s ease;
}
.ab-banner__slide.is-active { opacity: 1; }
/* 小圆点（已按需求隐藏，保留结构便于日后恢复） */
.ab-banner__dots { display: none; }
.ab-banner .nl-container { position: relative; z-index: 2; width: 100%; }
.ab-banner__title {
    font-size: 56px; font-weight: 700; color: #fff; letter-spacing: 3px;
    margin-bottom: 14px; text-align: left;
    transition: opacity .28s ease;
}
.ab-banner__sub {
    font-size: 22px; color: rgba(255, 255, 255, .9); letter-spacing: 1px;
    text-align: left; transition: opacity .28s ease;
}

/* 【页面】关于我们页 | 【模块】1. 顶部横幅 | 入场特效：opacity 0→1 + translateY 30px→0，缓出曲线 */
.nl-reveal { opacity: 0; animation: nlRevealUp .9s ease-out forwards; }
.ab-banner__title.nl-reveal { animation-delay: .8s; }
.ab-banner__sub.nl-reveal { animation-delay: 1.4s; }
@keyframes nlRevealUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ========== 2. 公司简介（蓝湖 box_5：左标题组装饰饱满 + 右描述中间线右侧一列） ========== */
.ab-intro { padding: 88px 0 60px; background: #fff; }
.ab-intro .nl-container { display: flex; gap: 204px; align-items: flex-start; }
.ab-intro__head { flex: 0 0 480px; display: flex; flex-direction: column; align-items: flex-start; gap: 0; }
.ab-intro__badge {
    font-size: 14px; letter-spacing: 6px; color: #0f7256; text-transform: uppercase;
    margin-bottom: 16px; font-weight: 600;
}
.ab-intro__head h2 { font-size: 48px; font-weight: 700; color: #0f7256; line-height: 1.3; margin-bottom: 20px; white-space: nowrap; }
.ab-intro__line { width: 64px; height: 3px; border-radius: 2px; background: #d9a441; margin-bottom: 20px; }
.ab-intro__head p { font-size: 30px; font-weight: 700; color: #333; line-height: 1.5; }
/* 副标下方宣传语：绿字 + 左右装饰短线排版 */
.ab-intro__slogan {
    margin-top: 26px;
    display: inline-flex; align-items: center; gap: 14px;
    font-size: 17px; color: #0f7256; letter-spacing: 2px; font-weight: 600;
}
.ab-intro__slogan::before,
.ab-intro__slogan::after {
    content: ''; width: 34px; height: 1px; background: rgba(15, 114, 86, .45);
}
/* 描述：中间基准线右侧一列竖排（蓝湖 paragraph_2：698 宽两段） */
.ab-intro__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 24px; }
.ab-intro__body p { font-size: 16px; color: #333; line-height: 2.1; text-align: justify; }

/* ================================================================
   【页面】关于我们页
   【模块】3. 四大特性
   【用途】四列网格展示泉水资源、恒温水质、区位优势、稀缺价值四项特性
   【关键属性】grid 4列；每项标题28px粗体+绿条下划线装饰；正文15px灰字
   【交互】每项初始隐藏，进入视口后依次淡入上滑（is-in 类控制）
   ================================================================ */
.ab-feats { padding: 40px 0 80px; background: #fff; }
.ab-feats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
/* 【页面】关于我们页 | 【模块】3. 四大特性 | 逐一显示特效：初始隐藏，进入视口后依次淡入上滑 */
.ab-feats__item { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.ab-feats__item.is-in { opacity: 1; transform: translateY(0); }
.ab-feats__item h3 { font-size: 28px; font-weight: 700; color: #2d2d2d; margin-bottom: 14px; position: relative; padding-bottom: 14px; }
.ab-feats__item h3::after { content: ''; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; border-radius: 2px; background: #0f7256; }
.ab-feats__item p { font-size: 15px; color: #666; line-height: 1.9; }

/* ================================================================
   【页面】关于我们页
   【模块】4. 品牌溯源
   【用途】年份聚焦式时间轴：左大年份叙事+右大图叠放切换，底部圆点时间轴导航
   【关键属性】grid 两栏（560px / 1fr）；左侧年份96px超大绿字+文字叠放层上移150px；右侧图片圆角展台+Ken Burns缓放
   【交互】点击底部时间轴节点切换年份/图片，文字/图片 opacity 过渡，进度条宽度动画
   ================================================================ */
.ab-trace {
    background: url(../images/about/bg_pinpai.png) center / cover no-repeat;
    padding: 90px 0; position: relative;
}
.ab-trace .nl-container { position: relative; z-index: 1; }
/* 标题区：品牌溯源（绿）在左，副标（灰+金线装饰）在右 */
.ab-trace__head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 48px;
}
.ab-trace__head h2 { font-size: 42px; font-weight: 700; color: #0f7256; letter-spacing: 2px; }
.ab-trace__head p {
    font-size: 19px; color: #7a8a82; letter-spacing: 1px;
    display: flex; align-items: center; gap: 12px;
}
.ab-trace__head p::before {
    content: ''; width: 40px; height: 2px; background: #d9a441;
}

/* —— 主体：左文本 / 右大图 叠放切换 —— */
.ab-trace__body {
    display: grid;
    grid-template-columns: minmax(0, 560px) minmax(0, 1fr);
    gap: 80px;
    align-items: center;
    min-height: 470px;
}
/* 【页面】关于我们页 | 【模块】4. 品牌溯源 | 左：文字叠放层（整体上移150px，与右侧大图顶部对齐），年份/名称/描述叠放切换 */
.ab-trace__texts {
    position: relative;
    min-height: 380px;
    transform: translateY(-150px);
}
.ab-trace__text {
    position: absolute; inset: 0;
    display: flex; flex-direction: column; align-items: flex-start;
    justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity .55s ease, visibility .55s ease;
}
.ab-trace__text.is-active { opacity: 1; visibility: visible; }
.ab-trace__text-no {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 15px; letter-spacing: .3em; color: #9ab3a5;
    margin-bottom: 10px;
}
.ab-trace__text-year {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 96px; font-weight: 700; line-height: 1;
    color: #0f7256; margin: 0 0 12px;
    text-shadow: 0 6px 24px rgba(15, 114, 86, .12);
    letter-spacing: 2px;
}
.ab-trace__text-name {
    font-size: 24px; font-weight: 700; color: #2d2d2d;
    margin: 0 0 20px; letter-spacing: 2px; position: relative;
    padding-left: 22px;
}
.ab-trace__text-name::before {
    content: ''; position: absolute; left: 0; top: 50%;
    width: 4px; height: 22px; transform: translateY(-50%);
    border-radius: 2px; background: linear-gradient(180deg, #2f9e6e, #0f7256);
}
.ab-trace__text-desc {
    font-size: 15px; color: #5a6a62; line-height: 2; margin: 0;
    max-width: 460px;
    border-left: 2px solid rgba(217, 164, 65, .6);
    padding-left: 18px;
}

/* 右：大图（圆角展台，随节点淡入叠放 · 高度较原 4:3 减 160px → 约 15:7 扁横幅；上移与左侧年份顶部对齐） */
.ab-trace__media {
    position: relative;
    width: 100%;
    aspect-ratio: 15 / 7;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 30px 70px -20px rgba(14, 59, 40, .28);
    transform: translateY(-75px);
}
.ab-trace__media::after {          /* 细描边 + 顶部柔光 */
    content: ''; position: absolute; inset: 0;
    border-radius: 24px; pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .75), inset 0 1px 0 rgba(255, 255, 255, .5);
}
.ab-trace__media-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0; visibility: hidden;
    transition: opacity .6s ease, transform 4.5s ease, visibility .6s ease;
    transform: scale(1.05);
}
.ab-trace__media-img.is-active {
    opacity: 1; visibility: visible;
    transform: scale(1);            /* 缓慢拉近的 Ken Burns */
}

/* —— 底部时间轴导航 —— */
.ab-trace__axis { margin-top: 52px; position: relative; }
/* 轨道两端预留节点标签(120px 半宽)空间，首尾「2026/至今」不再被页面裁切 */
.ab-trace__ruler { position: relative; height: 64px; margin: 0 clamp(60px, 5vw, 90px); }
.ab-trace__rail {
    position: absolute; left: 0; right: 0; top: 9px;
    height: 3px; border-radius: 3px;
    background: rgba(15, 114, 86, .18);
}
.ab-trace__fill {
    position: absolute; left: 0; top: 9px; height: 3px; width: 0%;
    background: linear-gradient(90deg, #2f9e6e, #0f7256);
    border-radius: 3px;
    transition: width .55s cubic-bezier(.4, 0, .2, 1);
}
.ab-trace__node {
    position: absolute; top: 0; transform: translateX(-50%);
    border: none; background: none; cursor: pointer; padding: 0;
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    z-index: 2; width: 120px;
}
.ab-trace__dot {
    width: 20px; height: 20px; border-radius: 50%;
    background: #fff; border: 3px solid #9bb7a8;
    transition: all .3s ease;
    box-shadow: 0 2px 8px rgba(14, 59, 40, .1);
}
.ab-trace__node.is-active .ab-trace__dot {
    border-color: #0f7256; background: #0f7256;
    box-shadow: 0 0 0 6px rgba(15, 114, 86, .15);
    transform: scale(1.12);
}
.ab-trace__label {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    white-space: nowrap; transition: all .3s ease;
}
.ab-trace__label b {
    font-size: 17px; font-weight: 700; color: #7a8a82; letter-spacing: 1px;
    transition: color .3s ease;
}
.ab-trace__label i {
    font-style: normal; font-size: 13px; color: #a3b0aa; letter-spacing: 1px;
    transition: color .3s ease;
}
.ab-trace__node.is-active .ab-trace__label b { color: #0f7256; }
.ab-trace__node.is-active .ab-trace__label i { color: #2f9e6e; }
.ab-trace__node:hover .ab-trace__dot { border-color: #2f9e6e; }
.ab-trace__node:hover .ab-trace__label b { color: #2f9e6e; }

/* ========== 5. 品牌核心价值（蓝湖 box_12-15：无背景 · 绿条竖排 + 展开大卡，第一条默认展开） ========== */
.ab-value {
    padding: 90px 0 50px; background: #fff; position: relative;
}
.ab-value .nl-container { position: relative; z-index: 1; }
.ab-value__item { margin-bottom: 16px; border-radius: 14px; overflow: hidden; box-shadow: 0 10px 30px rgba(14, 59, 40, .08); }
.ab-value__bar {
    display: flex; align-items: center; justify-content: space-between;
    height: 80px; padding: 0 56px 0 42px; cursor: pointer;
    transition: filter .3s ease;
}
.ab-value__bar:hover { filter: brightness(1.08); }
.ab-value__bar h3 { font-size: 20px; color: #fff; font-weight: 500; letter-spacing: 1px; }
.ab-value__bar-right { display: flex; align-items: center; gap: 18px; }
/* 未展开绿条上的向下箭头（提示可展开） */
.ab-value__bar-arrow {
    display: flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; color: rgba(255, 255, 255, .9);
}
.ab-value__bar-arrow svg { width: 20px; height: 20px; }
.ab-value__num {
    flex: 0 0 auto; width: 41px; height: 41px; border-radius: 50%; background: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700; color: #0f7256;
}
/* 展开时：绿色条消失，只留展开大卡 */
.ab-value__item.is-active .ab-value__bar { display: none; }
/* 展开区（蓝湖 box_13：大图背景 + 图上文字；仅激活条显示，文字滑入动画） */
.ab-value__expand {
    position: relative; height: 320px; overflow: hidden;
    background: center / cover no-repeat;
    display: none;
}
.ab-value__item.is-active .ab-value__expand { display: block; }
.ab-value__expand::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(100deg, rgba(9, 32, 22, .55) 0%, rgba(9, 32, 22, .28) 60%, rgba(9, 32, 22, .12) 100%);
}
.ab-value__expand-inner {
    position: absolute; inset: 0; z-index: 1; padding: 40px 52px; overflow-y: auto;
}
.ab-value__item.is-active .ab-value__expand-inner {
    animation: nlValueSlideIn .9s cubic-bezier(.4, 0, .2, 1) both;
}
@keyframes nlValueSlideIn {
    from { transform: translateY(-24px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}
.ab-value__expand h4 { font-size: 44px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.ab-value__expand p { font-size: 16px; color: rgba(255, 255, 255, .92); line-height: 2; max-width: 760px; }

/* ================================================================
   【页面】关于我们页
   【模块】6. 品牌核心壁垒
   【用途】背景图固定视差 + 左宣传图（竖排绿字 writing-mode）+ 右壁垒条目列表
   【关键属性】background-attachment:fixed；半透明白遮罩层；左图400px+竖排绿字（writing-mode:vertical-rl）
   【交互】无交互
   ================================================================ */
.ab-spring { padding: 50px 0 90px; background: center / cover no-repeat fixed; position: relative; margin-top: 20px; }
.ab-spring::before {
    content: ''; position: absolute; inset: 0; background: rgba(255, 255, 255, .55);
}
.ab-spring .nl-container { position: relative; z-index: 1; }
.ab-spring__inner { display: flex; gap: 60px; align-items: flex-start; }
/* 图片 + 右侧竖排两列标题（writing-mode 竖排 · 全绿 + 列间分隔线排版） */
.ab-spring__media { flex: 0 0 auto; display: flex; align-items: center; gap: 26px; }
.ab-spring__media-img { width: 400px; flex-shrink: 0; }
.ab-spring__media-img img { width: 100%; height: 370px; object-fit: cover; border-radius: 14px; box-shadow: 0 20px 50px rgba(14, 59, 40, .2); display: block; }
.ab-spring__media-text { display: flex; flex-direction: row; gap: 0; }
.ab-spring__media-text p {
    writing-mode: vertical-rl; text-orientation: upright;
    font-size: 24px; font-weight: 700; color: #0f7256; line-height: 1.55; letter-spacing: 5px;
}
.ab-spring__media-text p + p {
    margin-left: 22px; padding-left: 22px;
    border-left: 1px solid rgba(15, 114, 86, .35);
}
.ab-spring__body { flex: 1; min-width: 0; }
.ab-spring__item { margin-bottom: 26px; }
.ab-spring__item b { display: block; font-size: 18px; font-weight: 700; color: #0f7256; margin-bottom: 6px; }
.ab-spring__item p { font-size: 15px; color: #555; line-height: 2; }

/* ========== 7. 品牌品质体系（宣传图卡 + 斜切分割 + hover 除图片外全绿） ========== */
.ab-system {
    padding: 90px 0; background: #fff; position: relative;
}
.ab-system .nl-container { position: relative; z-index: 1; }
.ab-system__grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; align-items: start; }
.ab-system__card {
    background: #fff; border-radius: 14px; overflow: hidden;
    box-shadow: 0 12px 30px rgba(14, 59, 40, .10);
    transition: transform .35s ease, box-shadow .35s ease, background .35s ease;
}
.ab-system__card:hover { transform: translateY(-6px); box-shadow: 0 20px 46px rgba(14, 59, 40, .16); background: #0f7256; }
/* 图片底部斜切（左高右低），与内容区形成斜度分割 */
.ab-system__card-img {
    height: 160px; overflow: hidden;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 84%);
}
.ab-system__card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
/* 内容区：背景透出卡片（hover 时卡片变绿 → 除图片外全部变绿） */
.ab-system__card-body {
    background: transparent; padding: 14px 18px 18px; position: relative; margin-top: -22px;
}
.ab-system__card h3 {
    font-size: 19px; font-weight: 700; color: #0f7256; margin: 0 0 8px;
    position: relative; padding-bottom: 10px; transition: color .35s ease;
}
.ab-system__card h3::after {
    content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 3px;
    border-radius: 2px; background: #d9a441;
}
.ab-system__card p {
    font-size: 13px; color: #666; line-height: 1.9; margin: 0;
    transition: color .35s ease;
    /* 长文限 3 行省略，保持卡片整齐（hover 展开全文） */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ab-system__card:hover p {
    -webkit-line-clamp: unset;
    display: block;
}
/* hover：除图片外整体变绿、标题文字变白 */
.ab-system__card:hover .ab-system__card-body h3 { color: #fff; }
.ab-system__card:hover .ab-system__card-body p { color: rgba(255, 255, 255, .85); }

/* ========== 8. 品牌荣誉资质（左分类 黑图标→绿 + 右横向滚动封面 + 第一张放大 + 相册提示 + 灯箱） ========== */
.ab-honor {
    background: url(../images/about/bg_zizhi.png) center / cover no-repeat;
    padding: 90px 0; position: relative;
}
.ab-honor .nl-container { position: relative; z-index: 1; }
.ab-honor__body { display: flex; gap: 50px; align-items: flex-start; }
.ab-honor__list { flex: 0 0 240px; }
.ab-honor__item {
    display: flex; align-items: center; gap: 14px; padding: 18px 12px; width: 100%;
    border: none; border-bottom: 1px solid rgba(255, 255, 255, .25);
    background: none; cursor: pointer; font-size: 20px; font-weight: 600;
    transition: all .3s ease; text-align: left;
}
.ab-honor__item:hover { padding-left: 12px; }
.ab-honor__item.is-active { background: rgba(255, 255, 255, .16); border-radius: 10px; border-bottom-color: transparent; }
/* 图标：SVG 设计图标，color 跟随变色（默认黑 → hover/激活绿） */
.ab-honor__item { color: #1c1c1c; transition: color .3s ease, padding-left .3s ease; }
.ab-honor__item:hover, .ab-honor__item.is-active { color: #0f7256; }
.ab-honor__item-icon { width: 26px; height: 26px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.ab-honor__item-icon svg { width: 24px; height: 24px; display: block; }
/* 分类名称跟随图标颜色 */
.ab-honor__item-name { color: inherit; }
/* 右侧：横向滚动封面区 */
.ab-honor__gallery { flex: 1; min-width: 0; position: relative; }
.ab-honor__pane { display: none; align-items: center; position: relative; }
.ab-honor__pane.is-active { display: flex; animation: nlHonorFade .5s ease; }
@keyframes nlHonorFade { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.ab-honor__track {
    display: flex; gap: 32px; width: 100%;
    overflow-x: auto; scroll-behavior: smooth; padding: 8px 0;
    scrollbar-width: none;
}
.ab-honor__track::-webkit-scrollbar { display: none; }
.ab-honor__thumb {
    flex: 0 0 22%; border: none; background: none; padding: 0; cursor: pointer;
    border-radius: 12px; overflow: hidden; position: relative;
    box-shadow: 0 12px 30px rgba(14, 59, 40, .14); transition: transform .3s ease;
}
.ab-honor__thumb:hover { transform: translateY(-5px) scale(1.02); }
.ab-honor__thumb img { width: 100%; display: block; }
/* 提示条：默认常显（出现就显示），hover 时加深 */
.ab-honor__thumb-tip {
    position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
    background: linear-gradient(90deg, rgba(9, 32, 22, .82), rgba(15, 114, 86, .82));
    color: #fff; font-size: 13px; letter-spacing: 2px;
    text-align: center; padding: 9px 0;
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.ab-honor__thumb-tip::before {
    content: ''; width: 7px; height: 7px; border-radius: 50%;
    background: #d9a441; box-shadow: 0 0 0 3px rgba(217, 164, 65, .25);
}
.ab-honor__thumb:hover .ab-honor__thumb-tip { background: rgba(9, 32, 22, .92); }
/* 左右滚动箭头：无背景，纯绿色箭头 */
.ab-honor__scroll {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 44px; height: 44px; border: none; cursor: pointer;
    background: transparent; color: #0f7256; font-size: 30px; font-weight: 700; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: color .3s ease, transform .3s ease;
}
.ab-honor__scroll::before { content: '‹'; }
.ab-honor__scroll--next::before { content: '›'; }
.ab-honor__scroll:hover { color: #0a533c; transform: translateY(-50%) scale(1.15); }
.ab-honor__scroll--prev { left: -70px; }
.ab-honor__scroll--next { right: -40px; }
.ab-honor__empty { color: rgba(255, 255, 255, .7); font-size: 16px; }
/* 【页面】关于我们页 | 【模块】8. 品牌荣誉资质 | 相册灯箱：全屏遮罩查看原图 */
.nl-lightbox {
    position: fixed; inset: 0; z-index: 9999;
    display: none; align-items: center; justify-content: center;
}
.nl-lightbox.is-open { display: flex; }
.nl-lightbox__mask { position: absolute; inset: 0; background: rgba(0, 0, 0, .85); }
.nl-lightbox__inner { position: relative; z-index: 2; max-width: 86vw; max-height: 86vh; }
.nl-lightbox__inner img { max-width: 86vw; max-height: 86vh; border-radius: 8px; box-shadow: 0 20px 80px rgba(0, 0, 0, .5); }
.nl-lightbox__close, .nl-lightbox__nav {
    position: absolute; border: none; cursor: pointer; background: rgba(255, 255, 255, .14);
    color: #fff; display: flex; align-items: center; justify-content: center;
    transition: background .3s ease;
}
.nl-lightbox__close:hover, .nl-lightbox__nav:hover { background: rgba(15, 114, 86, .9); }
.nl-lightbox__close { top: -46px; right: 0; width: 38px; height: 38px; border-radius: 8px; font-size: 22px; }
.nl-lightbox__close::before { content: '×'; }
.nl-lightbox__nav { top: 50%; transform: translateY(-50%); width: 46px; height: 46px; border-radius: 50%; font-size: 20px; }
.nl-lightbox__nav--prev { left: -70px; }
.nl-lightbox__nav--next { right: -70px; }
.nl-lightbox__nav--prev::before { content: '‹'; }
.nl-lightbox__nav--next::before { content: '›'; }

/* ========== 9. 品牌文旅底蕴（左相册瀑布流按原比例 + 右内容 · 背景=单页缩略图按原尺寸） ========== */
.ab-culture {
    padding: 90px 0; background: center center no-repeat; background-size: auto; position: relative;
}
.ab-culture::before {
    content: ''; position: absolute; inset: 0; background: rgba(255, 255, 255, .55);
}
.ab-culture .nl-container { position: relative; z-index: 1; }
.ab-culture__inner { display: flex; gap: 60px; align-items: flex-start; }
/* 左：瀑布流（CSS columns，图片按原始比例显示、缩小） */
.ab-culture__gallery {
    flex: 0 0 52%; columns: 4; column-gap: 12px;
}
.ab-culture__img {
    break-inside: avoid; margin-bottom: 14px; border-radius: 10px; overflow: hidden;
    transition: transform .4s ease, box-shadow .4s ease;
}
.ab-culture__img:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(14, 59, 40, .18); }
.ab-culture__img img { width: 100%; height: auto; display: block; transition: transform .5s ease; }
.ab-culture__img:hover img { transform: scale(1.05); }
/* 右：标题竖排（副标在标题下方）+ 内容 */
.ab-culture__text { flex: 1; min-width: 0; }
.ab-culture__head { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 28px; }
.ab-culture__head h2 { font-size: 42px; font-weight: 700; color: #0f7256; letter-spacing: 2px; }
.ab-culture__head p { font-size: 19px; color: #7a8a82; letter-spacing: 1px; display: flex; align-items: center; gap: 12px; }
.ab-culture__head p::before { content: ''; width: 40px; height: 2px; background: #d9a441; }
.ab-culture__content {
    font-size: 15px; color: #555; line-height: 2.1; text-align: justify;
}
.ab-culture__content br { display: block; content: ''; margin: 8px 0; }

/* ========== 10. 品牌发展愿景（蓝湖 box_21：地图背景 + 图标/标题/英文 + hover 背景图展示内容） ========== */
.ab-vision { padding: 90px 0 60px; background: #fff; position: relative; }
.ab-vision .nl-container { position: relative; z-index: 1; }
.ab-vision__map {
    position: relative; display: flex; align-items: stretch; min-height: 385px;
    background: url(../images/about/bg_shijieditu.png) center / 100% 100% no-repeat;
}
.ab-vision__item {
    flex: 1; text-align: center; position: relative; overflow: hidden;
    padding: 56px 24px;
    display: flex; align-items: center; justify-content: center;
}
/* hover 背景层：宣传图 */
.ab-vision__bg {
    position: absolute; inset: 0; background: center / cover no-repeat;
    opacity: 0; transition: opacity .45s ease; z-index: 0;
}
.ab-vision__bg::after {
    content: ''; position: absolute; inset: 0; background: rgba(9, 32, 22, .6);
}
.ab-vision__item:hover .ab-vision__bg { opacity: 1; }
/* 内容层 */
.ab-vision__content {
    position: relative; z-index: 1;
    display: flex; flex-direction: column; align-items: center;
}
.ab-vision__icon {
    width: 79px; height: 79px; border-radius: 50%; background: #fff;
    box-shadow: 0 12px 30px rgba(14, 59, 40, .16);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px; color: #0f7256; transition: transform .35s ease;
}
.ab-vision__item:hover .ab-vision__icon { transform: translateY(-5px) scale(1.05); }
.ab-vision__icon svg { width: 44px; height: 44px; }
.ab-vision__item h3 { font-size: 26px; font-weight: 700; color: #2d2d2d; margin: 0 0 6px; transition: color .35s ease; }
.ab-vision__en { font-size: 16px; color: #0f7256; letter-spacing: 1px; font-weight: 600; }
.ab-vision__desc {
    font-size: 15px; color: #666; line-height: 1.9; max-width: 260px;
    display: none;
}
/* hover：背景图 + 文字变白 + 英文换内容 */
.ab-vision__item:hover h3 { color: #fff; }
.ab-vision__item:hover .ab-vision__en { display: none; }
.ab-vision__item:hover .ab-vision__desc { display: block; color: rgba(255, 255, 255, .92); }
/* 竖线分隔（蓝湖椭圆竖条 2×385） */
.ab-vision__sep {
    flex: 0 0 2px; background: rgba(0, 0, 0, .14);
    align-self: stretch; margin: 20px 0;
}

/* ========== 11. 结尾文案（蓝湖 box_22：全屏背景图 820 高 + 白字；左对齐，与 logo 同左缘） ========== */
.ab-end {
    position: relative;                                /* 桌面端 ::before 绝对定位的容器 */
    min-height: 820px; display: flex; align-items: center;
    padding: 80px 0;
    background: #0e3b28;                                /* 兜底色：移动端文字区无图时撑深绿 */
}
.ab-end::before {
    content: ""; position: absolute; inset: 0; z-index: 0;
    background: url(../images/about/bg_nlq.png) center / cover no-repeat;
    pointer-events: none;                               /* 避免遮挡文字点击 */
}
.ab-end .nl-container { position: relative; z-index: 1; width: 100%; text-align: left; }
.ab-end p { margin: 0; color: #fff; }
/* 引导小字 */
.ab-end__lead {
    font-size: 20px; color: rgba(255, 255, 255, .92); letter-spacing: 6px;
    line-height: 2.5; margin-bottom: 64px;
    text-shadow: 0 2px 18px rgba(0, 0, 0, .45);
}
/* 品牌名：超大压场 */
.ab-end__brand {
    font-size: 96px; font-weight: 700; letter-spacing: 26px; color: #fff;
    margin: 0 0 10px;
    text-shadow: 0 8px 50px rgba(0, 0, 0, .55);
}
/* 宣言：金色副题 */
.ab-end p.ab-end__slogan {
    font-size: 32px; font-weight: 400; color: #fff; letter-spacing: 12px;
    margin-bottom: 52px;
    text-shadow: 0 4px 26px rgba(0, 0, 0, .45);
}
/* 落款小字 */
.ab-end__foot {
    font-size: 17px; color: rgba(255, 255, 255, .88); letter-spacing: 6px;
    text-shadow: 0 2px 14px rgba(0, 0, 0, .45);
}

/* ================================================================
   【页面】关于我们页
   【模块】12. 品质把控体系
   【用途】5列等宽网格，展示从源头到安全的5个环节（颜色由深绿逐级变浅绿）
   【关键属性】grid 5列；每项内边距50px/30px；min-height:260px；5种绿色背景递进（#0e3b28→#2f9e6e）
   【交互】无交互
   ================================================================ */
.ab-control { display: grid; grid-template-columns: repeat(5, 1fr); }
.ab-control__item { padding: 50px 30px; min-height: 260px; position: relative; }
.ab-control__item h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.ab-control__item p { font-size: 14px; color: rgba(255, 255, 255, .85); line-height: 2; }
.ab-control__item--source { background: #0e3b28; }
.ab-control__item--grow { background: #145233; }
.ab-control__item--harvest { background: #1b6b46; }
.ab-control__item--cold { background: #237f54; }
.ab-control__item--safe { background: #2f9e6e; }

/* 响应式 */
@media (max-width: 1200px) {
    /* 公司简介（好水养好鱼）：左右两栏改上下堆叠，防固定宽度把右文挤出屏 */
    .ab-intro .nl-container { flex-direction: column; gap: 42px; }
    .ab-intro__head { flex: none; width: 100%; }
    .ab-intro__body { flex: none; width: 100%; }
    /* 品牌核心壁垒：内层左右改上下，图自适应 */
    .ab-spring__inner { flex-direction: column; gap: 36px; }
    .ab-spring__media { flex: none; width: 100%; align-items: flex-start; }
    .ab-spring__media-img { width: min(560px, 100%); }
    .ab-spring__body { flex: none; width: 100%; }
    .ab-culture__col img, .ab-culture__mid img { width: 200px; }
    .ab-control { grid-template-columns: repeat(3, 1fr); }
    .ab-trace__body { gap: 48px; grid-template-columns: minmax(0, 440px) minmax(0, 1fr); }
    .ab-trace__text-year { font-size: 76px; }
}
@media (max-width: 992px) {
    .ab-banner { height: 420px; }
    .ab-banner__title { font-size: 40px; }
    .ab-feats__grid { grid-template-columns: repeat(2, 1fr); }
    .ab-trace__body { grid-template-columns: 1fr; gap: 36px; min-height: 0; }
    /* 单栏后取消文字整体上移（桌面 translateY(-150px) 是为对齐右侧大图，一栏时会造成压住标题） */
    .ab-trace__texts { min-height: 0; transform: none; }
    .ab-trace__text { position: static; opacity: 1; visibility: visible; display: none; }
    .ab-trace__text.is-active { display: flex; }
    .ab-trace__text-year { font-size: 60px; margin-bottom: 8px; }
    .ab-trace__media { transform: none; aspect-ratio: 16 / 10; }
    .ab-value__grid { grid-template-columns: 1fr; }
    /* 品牌品质体系：5 列 → 3 列（配合文字 3 行截断，卡片整齐） */
    .ab-system__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .ab-system__imgs { grid-template-columns: repeat(3, 1fr); }
    .ab-honor__body { flex-direction: column; }
    /* 品牌文旅底蕴：窄屏左右两栏挤成窄柱 → 改为上下堆叠 + 瀑布列数 4→2 */
    .ab-culture__inner { flex-direction: column; gap: 32px; }
    .ab-culture__gallery { flex: 0 0 auto; width: 100%; columns: 2; column-gap: 10px; }
    .ab-culture__img { margin-bottom: 10px; }
    .ab-culture__text { flex-direction: column; gap: 30px; }
    .ab-vision__grid { grid-template-columns: repeat(2, 1fr); }
    .ab-control { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    /* 板块间视觉间距统一 15px（栋生 2026-09-08）
       上一块 pb=0 + 下一块 pt=15，首块 ab-intro 顶部呼吸 44px，
       结尾 ab-end 保留底部 32 让白字不贴图边 */
    .ab-intro   { padding: 44px 0 0; }
    .ab-feats   { padding: 15px 0 0; }
    .ab-trace   { padding: 15px 0 0; }
    .ab-value   { padding: 15px 0 0; }
    .ab-spring  { padding: 15px 0 0; margin-top: 0; }
    .ab-system  { padding: 15px 0 0; }
    .ab-honor   { padding: 15px 0 0; }
    .ab-culture { padding: 15px 0 0; }
    .ab-vision  { padding: 15px 0 0; }
    .ab-end     { padding: 15px 0 32px; }
    /* ab-value 末项 16px margin-bottom 会让 ab-value→ab-spring 视觉间距变为 31；
       移动端 section 自身 pb 已为 0，最后一张卡不再外溢间距 */
    .ab-value__item:last-child { margin-bottom: 0; }

    .ab-banner { height: 300px; }
    .ab-banner__title { font-size: 30px; }
    .ab-banner__sub { font-size: 15px; letter-spacing: 0; line-height: 1.7; }
    .ab-intro__head { flex-direction: column; align-items: flex-start; }
    .ab-intro__body { flex-direction: column; }
    .ab-intro__head h2 { font-size: 32px; white-space: normal; }
    .ab-intro__head p { font-size: 22px; }
    .ab-intro__slogan { font-size: 13px; letter-spacing: 1px; }
    .ab-feats__grid { grid-template-columns: 1fr; }
    /* 品牌品质体系：3 列 → 2 列，第 5 张奇数末卡占满整行 */
    .ab-system__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .ab-system__card:nth-child(odd):last-child { grid-column: 1 / -1; }
    .ab-system__imgs { grid-template-columns: repeat(2, 1fr); }
    .ab-vision__grid { grid-template-columns: 1fr; }
    .ab-control { grid-template-columns: 1fr; }
    /* 品牌核心壁垒：图文全宽自适应，杜绝横向溢出 */
    .ab-spring__inner { gap: 24px; }
    .ab-spring__media { flex-direction: column; align-items: flex-start; gap: 14px; }
    .ab-spring__media-img { width: 100%; }
    .ab-spring__media-img img { height: 240px; }
    /* 手机下标语改横排两行（图下方），避免竖排文字在窄屏错乱 */
    .ab-spring__media-text { flex-direction: column; gap: 12px; }
    .ab-spring__media-text p {
        writing-mode: horizontal-tb;
        text-orientation: mixed;
        font-size: 22px;
        line-height: 1.5;
        letter-spacing: 3px;
    }
    .ab-spring__media-text p + p {
        margin-left: 0;
        padding-left: 0;
        border-left: 0;
    }
    .ab-spring__item b { font-size: 16px; }
    .ab-spring__item p { font-size: 14px; }
    /* 品牌溯源时间轴（手机端）：窄屏节点挤压 + 首尾年份被裁，
       改为轨道收起、节点整组可横向滑动 */
    .ab-trace__axis { margin-top: 26px; }
    .ab-trace__ruler {
        margin: 0; height: auto;
        display: flex; justify-content: flex-start;
        gap: 10px; padding: 2px 2px 16px;
        overflow-x: auto; overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
    }
    .ab-trace__rail, .ab-trace__fill { display: none; }
    .ab-trace__node {
        position: relative; left: auto !important; transform: none;
        flex: 0 0 auto; width: auto; min-width: 108px;
        flex-direction: column; gap: 6px; padding: 0 4px;
    }
    .ab-trace__node .ab-trace__label { white-space: nowrap; }
    /* 品牌文旅底蕴：标题缩小、板块间距已在文件开头统一为 15px（不再单独 padding） */
    .ab-culture__head h2 { font-size: 30px; }
    .ab-culture__head p { font-size: 15px; }
    .ab-culture__content { font-size: 14px; line-height: 1.9; }
    /* 品牌荣誉资质：移动端把 TAB 与图片的间距从 ≈158px 空白（list 240px 固定高 + gap:50px）收至 ≈18px */
    .ab-honor__body { gap: 16px; }
    .ab-honor__list { flex: none; width: 100%; }
    /* 品牌发展愿景：移动端 4 项 item 仍横向并排、每项仅 112px 宽 → 4 字标题被压出 1/2/3 行的乱折行；
       强制 h3 宽度 2em + break-all，所有 4 字标题整齐两字一行 */
    .ab-vision__item h3 { width: 2em; word-break: break-all; line-height: 1.3; }
    /* 品牌核心价值（手机端，栋生 2026-09-07）：展开卡标题 44px 过大、窄屏(≤360)会折行 →
       字号收至 24px + 内边距 52→24 加宽内容区，9 字标题(实测 216px@24px)在 320 视口
       内容区 240px 内恒单行；标题与正文间距同步收窄 */
    .ab-value__expand-inner { padding: 24px 24px; }
    .ab-value__expand h4 { font-size: 24px; margin-bottom: 12px; }
    /* 关于我们 banner（手机端）：整张横幅完整显示不裁切
       广告图统一 1920×630（宽高比 3.048）→ slides 用 padding-top 撑出同比例高度，
       cover 恰好填满无裁切；banner 由固定 300px 变为全宽扁横幅；
       主/副标题 absolute 叠图上垂直居中（保留桌面左对齐），字号缩小 */
    .ab-banner--slider { height: auto; display: block; }
    .ab-banner--slider .ab-banner__slides { position: relative; height: 0; padding-top: 32.8125%; }
    .ab-banner .nl-container {
        position: absolute; inset: 0; z-index: 2;
        display: flex; flex-direction: column; justify-content: center;
    }
    .ab-banner__title { font-size: 24px; margin-bottom: 6px; letter-spacing: 1px; }
    .ab-banner__sub { font-size: 13px; }
    /* 关于我们结尾文案（ab-end）：回归桌面"整段风景背景 + 文字浮图上"语义
       桌面 min-height:820 cover 本身就是这个语义（1280 视口下裁两侧约 25%），
       移动端保持同样的"全幅背景图 + 文字居中叠上"模式，仅高度/字号缩放。
       图片整段铺满，文字 z-index 浮上，text-shadow 保可读。 */
    .ab-end {
        min-height: 40vh;                              /* 视口高 40%，与桌面 1280 cover 25% 裁切率持平 */
        padding: 15px 0 32px;                           /* 上 15 与上一块衔接（开头统一间距），下 32 让白字不贴图边 */
        display: flex; align-items: center; justify-content: center;
    }
    .ab-end::before {
        position: absolute; inset: 0; z-index: 0;      /* 恢复桌面绝对定位，整段铺底 */
        display: block; width: 100%; height: 100%;
        background: url(../images/about/bg_nlq.png) center / cover no-repeat;
        pointer-events: none;
    }
    .ab-end .nl-container {
        position: relative; z-index: 1; width: 100%; text-align: center;
        padding: 0 24px;
    }
    .ab-end__lead {
        font-size: 12px; line-height: 1.9; letter-spacing: 2px;
        margin-bottom: 18px;
        text-shadow: 0 2px 12px rgba(0, 0, 0, .55);   /* 亮色风景上需阴影保可读 */
    }
    .ab-end__brand {
        font-size: 44px; letter-spacing: 10px; margin: 0 0 4px;
        text-shadow: 0 4px 20px rgba(0, 0, 0, .6);
    }
    .ab-end p.ab-end__slogan {
        font-size: 16px; letter-spacing: 4px; margin-bottom: 16px;
        text-shadow: 0 2px 12px rgba(0, 0, 0, .55);
    }
    .ab-end__foot {
        font-size: 10px; letter-spacing: 2px;
        text-shadow: 0 1px 8px rgba(0, 0, 0, .5);
    }
}

/* ================================================================
   【页面】关于我们页
   【模块】品牌发展愿景 触屏适配（栋生 2026-09-08）
   【背景】桌面为纯 CSS :hover；iOS Safari 对无事件绑定的 div 点击不触发 :hover
          → 苹果端"点击没反应"。约 about.blade.php @section('script') 在
          hover:none 设备给 .ab-vision__item 绑 click 切 .is-open。
   【关键属性】先还原 :hover（防 iOS sticky hover 残留撑开），hover 态改由
          .is-open 呈现；两条规则同特异度，.is-open 后写胜出
   ================================================================ */
@media (hover: none) {
    /* 还原 :hover 态 → 触屏下仅由 .is-open 决定展开 */
    .ab-vision__item:hover .ab-vision__bg { opacity: 0; }
    .ab-vision__item:hover .ab-vision__icon { transform: none; }
    .ab-vision__item:hover h3 { color: #2d2d2d; }
    .ab-vision__item:hover .ab-vision__en { display: block; }
    .ab-vision__item:hover .ab-vision__desc { display: none; }

    /* .is-open = 展开态（等价桌面 hover 效果） */
    .ab-vision__item.is-open .ab-vision__bg { opacity: 1; }
    .ab-vision__item.is-open .ab-vision__icon { transform: translateY(-5px) scale(1.05); }
    .ab-vision__item.is-open h3 { color: #fff; }
    .ab-vision__item.is-open .ab-vision__en { display: none; }
    .ab-vision__item.is-open .ab-vision__desc { display: block; color: rgba(255, 255, 255, .92); }
}