@charset "utf-8";
/* ==========================================================================
   化工企业官网模板 · 深蓝工业风
   --------------------------------------------------------------------------
   设计原则：大气、专业、工业科技感
   性能原则：仅使用 transform / opacity 过渡，不使用 blur 滤镜与无限循环动画
   SEO 原则：语义化标签、清晰层级、内容优先
   ========================================================================== */

/* ==========================================================================
   1. 设计变量
   ========================================================================== */
:root {
    /* 主色：深海蓝（工业 / 稳重 / 可信） */
    --c-navy-900: #061a2e;
    --c-navy-800: #0a2239;
    --c-navy-700: #0e3355;

    /* 品牌蓝 */
    --c-blue-700: #0d5aa7;
    --c-blue-600: #1168c0;
    --c-blue-500: #1e88e5;
    --c-blue-400: #4aa8f0;
    --c-cyan-400: #35c6f4;

    /* 点缀：环保青绿（承载「环保科技」的品牌信号） */
    --c-teal-400: #2ec4a6;
    --c-teal-500: #0f9d7f;
    --c-green: #10b981;

    /* 中性色 */
    --c-title: #16283c;
    --c-body: #4a5c70;
    --c-muted: #5f7183;     /* 次级文字：原 #8697a8 在浅底上仅 3.0:1，偏淡看不清 → 提到约 5:1（达 AA） */
    --c-line: #e3eaf2;
    --c-line-d: #cfdae6;
    --c-bg: #f1f7f7;        /* 浅底带一丝青绿，与「环保」品牌尾色呼应 */
    --c-white: #ffffff;

    /* 渐变：主渐变尾部收在环保青绿，形成「工业蓝 → 环保绿」的品牌签名 */
    --grad-blue: linear-gradient(135deg, var(--c-blue-700) 0%, var(--c-blue-500) 42%, var(--c-cyan-400) 72%, var(--c-teal-400) 100%);
    --grad-env: linear-gradient(135deg, var(--c-cyan-400) 0%, var(--c-teal-400) 100%);
    /* 浅底标题关键词渐变：两端都压暗，保证大字对比度 ≥3:1 */
    --grad-text: linear-gradient(100deg, var(--c-blue-600) 0%, var(--c-teal-500) 100%);
    --grad-navy: linear-gradient(160deg, var(--c-navy-800) 0%, var(--c-navy-700) 55%, var(--c-blue-700) 100%);

    /* 阴影 */
    --sh-sm: 0 2px 8px rgba(10, 34, 57, .06);
    --sh-md: 0 8px 24px rgba(10, 34, 57, .09);
    --sh-lg: 0 18px 44px rgba(10, 34, 57, .14);
    --sh-blue: 0 10px 26px rgba(17, 104, 192, .26);

    /* 圆角 */
    --r-sm: 4px;
    --r-md: 8px;
    --r-lg: 14px;
    --r-full: 999px;

    /* 版心 */
    --wrap: 1320px;
    --gap: 24px;

    /* 过渡（仅位移与透明度，避免重绘卡顿） */
    --t: .28s cubic-bezier(.4, 0, .2, 1);
}

/* ==========================================================================
   2. 基础重置
   ========================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    font-size: 15px;
    line-height: 1.75;
    color: var(--c-body);
    background: var(--c-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--c-title);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -.01em;
}

a { color: inherit; text-decoration: none; transition: color var(--t); }
/* 注意：必须带 height:auto —— 模板里的 img 都写了 width/height 属性，
   一旦 CSS 只约束宽度而不管高度，浏览器会保留 height 属性值把图片纵向拉伸 */
img { display: block; max-width: 100%; height: auto; border: 0; }
ul, ol, li { list-style: none; }
/* 注意：这条全局规则会给所有 <b>/<strong> 强制上深色。
   深色底上的 <b>/<strong> 必须自己显式覆盖颜色，否则会变成深色字铺深色底（几乎看不见）。 */
strong, b { font-weight: 700; color: var(--c-title); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

::selection { background: var(--c-blue-500); color: #fff; }

/* 无障碍：键盘焦点可见 */
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--c-blue-500);
    outline-offset: 3px;
}

/* ==========================================================================
   3. 通用布局与组件
   ========================================================================== */
.wrap {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gap);
}

.section { padding: 84px 0; }
.section--tight { padding: 64px 0; }
.section--grey { background: var(--c-bg); }
/* 深色区叠加青绿光晕：在「工业深蓝」底上透出环保科技感（纯背景层，不影响任何子元素） */
.section--navy {
    background:
        radial-gradient(1100px 520px at 90% -10%, rgba(46, 196, 166, .20), transparent 62%),
        radial-gradient(860px 460px at 2% 106%, rgba(53, 198, 244, .16), transparent 60%),
        var(--grad-navy);
}

/* 区块标题 */
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-head--left { text-align: left; margin-bottom: 34px; }

.sec-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--c-blue-600);
    background: linear-gradient(120deg, rgba(30, 136, 229, .09), rgba(46, 196, 166, .1));
    border-radius: var(--r-full);
    padding: 5px 16px 5px 13px;
    margin-bottom: 16px;
}
.sec-eyebrow::before {
    content: "";
    width: 6px; height: 6px;
    flex: none;
    border-radius: 50%;
    background: var(--c-teal-400);
    box-shadow: 0 0 0 3px rgba(46, 196, 166, .18);
}
.sec-head--light .sec-eyebrow { color: var(--c-cyan-400); background: linear-gradient(120deg, rgba(53, 198, 244, .14), rgba(46, 196, 166, .16)); }

.sec-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--c-title);
    margin-bottom: 14px;
}
.sec-title em {
    font-style: normal;
    color: var(--c-blue-600);
}
/* 标题关键词统一用「青 → 环保绿」渐变，与首页大标题同语言 */
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
    .sec-title em,
    .about-body h2 em {
        background-image: var(--grad-text);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .sec-head--light .sec-title em {
        background-image: var(--grad-env);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    /* 大号日期数字同品牌渐变，让「蓝 → 青绿」的签名贯穿列表页与首页 */
    .news-date b,
    .newslist-date b {
        background-image: var(--grad-text);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
}
.sec-desc {
    font-size: 15px;
    color: var(--c-muted);
    max-width: 720px;
    margin: 0 auto;
}
.sec-head--left .sec-desc { margin: 0; }

.sec-head--light .sec-title { color: #fff; }
.sec-head--light .sec-title em { color: var(--c-cyan-400); }
.sec-head--light .sec-desc { color: rgba(255, 255, 255, .72); }

.sec-bar {
    width: 56px;
    height: 4px;
    border-radius: 2px;
    background: var(--grad-blue);
    margin: 0 auto 20px;
}
.sec-head--left .sec-bar { margin: 0 0 20px; }

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 13px 30px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--r-full);
    transition: transform var(--t), box-shadow var(--t), background-color var(--t), color var(--t), border-color var(--t);
    will-change: transform;
}
.btn svg { flex: none; }
.btn--primary {
    color: #fff;
    background: var(--grad-blue);
    box-shadow: var(--sh-blue);
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(17, 104, 192, .34); }
.btn--ghost {
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, .42);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; transform: translateY(-3px); }
.btn--line {
    color: var(--c-blue-600);
    border: 1.5px solid var(--c-line-d);
    background: #fff;
}
.btn--line:hover { border-color: var(--c-blue-600); background: var(--c-blue-600); color: #fff; transform: translateY(-3px); }
.btn--lg { padding: 16px 38px; font-size: 16px; }

/* 文字链接 */
.link-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-blue-600);
}
.link-more:hover { gap: 10px; }

/* 屏幕阅读器专用 */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   4. 顶部信息条 & 页头
   ========================================================================== */
.topbar {
    background: var(--c-navy-900);
    color: rgba(255, 255, 255, .74);
    font-size: 13px;
    line-height: 40px;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar-left { display: flex; align-items: center; gap: 8px; }
.topbar-left .dot {
    display: inline-block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--c-green);
    flex: none;
}
.topbar-list { display: flex; align-items: center; gap: 22px; }
.topbar-list a { display: inline-flex; align-items: center; gap: 7px; color: rgba(255, 255, 255, .82); }
.topbar-list a:hover { color: var(--c-cyan-400); }
.topbar-list svg { color: var(--c-cyan-400); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 900;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    transition: box-shadow var(--t);
}
.site-header.is-stuck { box-shadow: var(--sh-md); }
.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 76px;
}

/* flex 允许收缩（0 1 auto）而非 flex:none：窄屏下品牌区可被压缩，
   否则品牌英文副标题会把右侧搜索/菜单按钮挤出视口，产生横向滚动 */
.brand { display: flex; align-items: center; gap: 13px; flex: 0 1 auto; min-width: 0; }
.brand-mark { height: 46px; width: auto; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
/* 文本溢出时省略号收尾，保证极端窄屏也不撑破头部 */
.brand .brand-name,
.brand .brand-sub { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--c-navy-800);
    letter-spacing: .01em;
    white-space: nowrap;
}
.brand-sub {
    font-size: 9.5px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--c-muted);
    white-space: nowrap;
}

.mainnav ul { display: flex; align-items: center; gap: 2px; }
.mainnav a {
    position: relative;
    display: block;
    padding: 26px 13px;
    font-size: 15.5px;
    font-weight: 600;
    color: var(--c-title);
    white-space: nowrap;
}
.mainnav a::after {
    content: "";
    position: absolute;
    left: 13px; right: 13px; bottom: 18px;
    height: 2.5px;
    border-radius: 2px;
    background: var(--grad-blue);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--t);
}
.mainnav a:hover { color: var(--c-blue-600); }
.mainnav a:hover::after,
.mainnav li.current > a::after { transform: scaleX(1); }
.mainnav li.current > a { color: var(--c-blue-600); }

.header-cta { display: flex; align-items: center; gap: 12px; flex: none; }
.header-cta .btn { padding-left: 24px; padding-right: 24px; }
.header-phone { display: flex; align-items: center; gap: 10px; }
.header-phone-icon {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(30, 136, 229, .1);
    color: var(--c-blue-600);
    flex: none;
}
.header-phone-txt { display: flex; flex-direction: column; line-height: 1.2; }
.header-phone-txt small { font-size: 11px; color: var(--c-muted); }
.header-phone-txt b { font-size: 16px; color: var(--c-navy-800); font-weight: 800; letter-spacing: .02em; }

.nav-toggle {
    display: none;
    width: 44px; height: 44px;
    border-radius: var(--r-md);
    border: 1px solid var(--c-line-d);
    place-items: center;
    color: var(--c-navy-800);
}
.nav-toggle span {
    display: block;
    width: 20px; height: 2px;
    background: currentColor;
    border-radius: 2px;
    position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
    content: "";
    position: absolute;
    left: 0;
    width: 20px; height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--t);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ==========================================================================
   5. 首页 Hero
   ========================================================================== */
.hero {
    position: relative;
    background: var(--c-navy-900);
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    /* 使用本公司产线实拍，替换原第三方厂区照片 */
    background-image: url("../images/case/7574624.jpg");
    background-size: cover;
    background-position: center 55%;
    opacity: .26;
}
.hero-veil {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(6, 26, 46, .96) 0%, rgba(6, 26, 46, .86) 50%, rgba(8, 30, 52, .95) 100%),
        radial-gradient(900px 460px at 50% 0%, rgba(30, 136, 229, .32), transparent 70%),
        radial-gradient(760px 460px at 90% 104%, rgba(46, 196, 166, .20), transparent 66%);
}
/* 装饰性网格（纯 CSS 渐变，无图片请求） */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 62px 62px;
    mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
    -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}

/* 居中式文字主视觉：去轮播，让口号成为 hero 的核心 */
.hero-inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    /* 只写纵向内边距：本元素同时带 .wrap，用 padding 简写会把 .wrap 的左右内边距清零，
       导致窄屏下 hero 文案直接贴到视口边缘 */
    padding-top: 96px;
    padding-bottom: 100px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 7px 17px;
    border-radius: var(--r-full);
    border: 1px solid rgba(53, 198, 244, .34);
    background: rgba(53, 198, 244, .1);
    color: var(--c-cyan-400);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .04em;
    margin-bottom: 30px;
}
.hero-badge i {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--c-cyan-400);
    flex: none;
}

/* 主口号：岁月如磐 · 粘结无限 */
.hero-slogan {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: clamp(14px, 2.2vw, 26px);
    font-size: clamp(38px, 5.4vw, 72px);
    font-weight: 800;
    color: #fff;
    line-height: 1.12;
    letter-spacing: .05em;
    margin-bottom: 26px;
}
.slogan-item { display: inline-block; }
.slogan-item--grad {
    background-image: var(--grad-env);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.slogan-sep {
    flex: none;
    width: clamp(30px, 4vw, 58px);
    height: 5px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--c-cyan-400), var(--c-teal-400));
}

/* 对句：品质承诺，双行居中 */
.hero-couplet {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 28px;
    font-size: clamp(15px, 1.5vw, 19px);
    line-height: 1.95;
    letter-spacing: .14em;
    color: rgba(255, 255, 255, .86);
    font-weight: 500;
}
.couplet-line { display: block; }

.hero-lead {
    font-size: 16.5px;
    line-height: 1.9;
    color: rgba(255, 255, 255, .76);
    max-width: 680px;
    margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-bottom: 40px; }

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 30px;
    width: 100%;
    max-width: 780px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, .13);
}
.hero-trust li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 14px;
    color: rgba(255, 255, 255, .84);
    font-weight: 500;
}
.hero-trust svg { color: var(--c-green); flex: none; }

/* 说明：原 hero 右侧轮播图（.hero-visual/.hero-frame/.hero-slide/.hero-dots）
   已随首页改版移除——原图为带营销角标与电话条的电商风格素材，不适合作为首屏主视觉。 */

/* Hero 底部数据条 */
.hero-stats {
    position: relative;
    z-index: 3;
    background: rgba(255, 255, 255, .055);
    border-top: 1px solid rgba(255, 255, 255, .12);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.hero-stats div {
    padding: 26px 20px;
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, .1);
}
.hero-stats div:last-child { border-right: 0; }
.hero-stats b {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    letter-spacing: -.02em;
}
.hero-stats b i { font-style: normal; font-size: 17px; color: var(--c-teal-400); margin-left: 3px; }
.hero-stats span { display: block; font-size: 13px; color: rgba(255, 255, 255, .68); margin-top: 5px; }

/* ==========================================================================
   6.1 核心优势
   ========================================================================== */
.feat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.feat {
    position: relative;
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--r-lg);
    padding: 34px 26px 30px;
    overflow: hidden;
    transition: transform var(--t), box-shadow var(--t), border-color var(--t);
    will-change: transform;
}
.feat::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 3px;
    background: var(--grad-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t);
}
.feat:hover { transform: translateY(-7px); box-shadow: var(--sh-lg); border-color: transparent; }
.feat:hover::before { transform: scaleX(1); }
.feat-icon {
    width: 56px; height: 56px;
    border-radius: 15px;
    display: grid;
    place-items: center;
    background: linear-gradient(140deg, rgba(30, 136, 229, .13), rgba(46, 196, 166, .18));
    color: var(--c-blue-600);
    margin-bottom: 20px;
}
.feat h3 { font-size: 18.5px; margin-bottom: 10px; }
.feat p { font-size: 14px; color: var(--c-body); line-height: 1.85; }

/* ==========================================================================
   6.2 产品中心
   ========================================================================== */
.pro-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.pro {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--r-lg);
    overflow: hidden;
    transition: transform var(--t), box-shadow var(--t);
    will-change: transform;
}
.pro:hover { transform: translateY(-7px); box-shadow: var(--sh-lg); }
.pro-pic {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--c-bg);
}
.pro-pic img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .5s cubic-bezier(.4, 0, .2, 1);
}
.pro:hover .pro-pic img { transform: scale(1.06); }
/* 标签移至右上角：产品图左上角原图自带红色促销带，标签放此会与其打架 */
.pro-tag {
    position: absolute;
    right: 12px;
    top: 12px;
    padding: 5px 13px;
    border-radius: var(--r-full);
    background: linear-gradient(135deg, rgba(13, 90, 167, .94), rgba(15, 157, 127, .94));
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .04em;
    box-shadow: 0 4px 12px rgba(6, 26, 46, .24);
}
.pro-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.pro-body h3 { font-size: 17.5px; margin-bottom: 9px; }
.pro-body p {
    font-size: 13.5px;
    color: var(--c-muted);
    line-height: 1.8;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}
.pro-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px dashed var(--c-line);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--c-blue-600);
}
.pro-foot-arrow {
    width: 30px; height: 30px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(30, 136, 229, .1);
    color: var(--c-blue-600);
    transition: background-color var(--t), color var(--t);
}
.pro:hover .pro-foot-arrow { background: var(--c-blue-600); color: #fff; }

/* ==========================================================================
   6.3 应用领域
   ========================================================================== */
.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.app {
    display: flex;
    gap: 16px;
    padding: 26px 24px;
    border-radius: var(--r-lg);
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .12);
    transition: transform var(--t), background-color var(--t), border-color var(--t);
    will-change: transform;
}
.app:hover { transform: translateY(-5px); background: rgba(255, 255, 255, .09); border-color: rgba(46, 196, 166, .5); }
.app-icon {
    width: 48px; height: 48px;
    flex: none;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(46, 196, 166, .16);
    color: var(--c-teal-400);
}
.app h3 { font-size: 16.5px; color: #fff; margin-bottom: 7px; }
.app p { font-size: 13.5px; color: rgba(255, 255, 255, .66); line-height: 1.8; }

/* ==========================================================================
   6.4 关于我们
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 56px;
    align-items: center;
}
.about-visual { position: relative; }
.about-visual img {
    width: 100%;
    aspect-ratio: 4 / 3;          /* 锁定比例：既不被 height 属性拉伸，也不会过高 */
    object-fit: cover;
    border-radius: var(--r-lg);
    box-shadow: var(--sh-lg);
}
.about-visual::before {           /* 图片内缩细白描边，提升质感 */
    content: "";
    position: absolute;
    inset: 10px;
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: 8px;
    pointer-events: none;
}
.about-visual::after {            /* 右下装饰块 → 环保青绿 */
    content: "";
    position: absolute;
    right: -16px; bottom: -16px;
    width: 148px; height: 148px;
    border-radius: var(--r-lg);
    background: var(--grad-env);
    z-index: -1;
    opacity: .18;
}
.about-badge {
    position: absolute;
    left: -18px; bottom: 26px;
    background: var(--c-navy-800);
    color: #fff;
    border-radius: var(--r-md);
    padding: 16px 22px;
    box-shadow: var(--sh-lg);
    text-align: center;
    overflow: hidden;
}
.about-badge::before {           /* 顶部环保绿渐变条 */
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 3px;
    background: var(--grad-env);
}
.about-badge b { display: block; font-size: 28px; font-weight: 800; color: var(--c-teal-400); line-height: 1.1; }
.about-badge span { font-size: 12.5px; color: rgba(255, 255, 255, .76); }

.about-body h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.about-body h2 em { font-style: normal; color: var(--c-blue-600); }
.about-text { font-size: 15.5px; line-height: 1.95; color: var(--c-body); margin: 18px 0 26px; }

.about-list { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 26px; margin-bottom: 34px; }
.about-list li {
    display: flex;
    align-items: center;
    gap: 11px;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--c-title);
}
.about-list svg {
    flex: none;
    width: 19px; height: 19px;
    padding: 3px;
    border-radius: 50%;
    background: rgba(46, 196, 166, .14);
    color: var(--c-teal-500);
}

/* ==========================================================================
   6.5 新闻中心
   ========================================================================== */
.news-feature {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
}
.news-hero {
    position: relative;
    border-radius: var(--r-lg);
    overflow: hidden;
    min-height: 400px;
    display: flex;
    align-items: flex-end;
    background: var(--c-navy-800);
}
.news-hero img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .5s cubic-bezier(.4, 0, .2, 1);
}
.news-hero:hover img { transform: scale(1.05); }
.news-hero-veil {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(6, 26, 46, .94) 8%, rgba(6, 26, 46, .34) 58%, transparent);
}
.news-hero-body { position: relative; z-index: 2; padding: 30px 28px; }
.news-hero-body .date-chip {
    display: inline-block;
    padding: 3px 12px;
    border-radius: var(--r-full);
    background: rgba(53, 198, 244, .2);
    color: var(--c-cyan-400);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 13px;
}
.news-hero-body h3 { font-size: 21px; color: #fff; margin-bottom: 10px; line-height: 1.45; }
.news-hero-body p {
    font-size: 13.5px;
    color: rgba(255, 255, 255, .7);
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-side { display: flex; flex-direction: column; }
.news-side-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--c-line);
    margin-bottom: 6px;
}
.news-side-head h3 { font-size: 18px; }
.news-row {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 17px 0;
    border-bottom: 1px dashed var(--c-line);
    transition: transform var(--t);
    will-change: transform;
}
.news-row:hover { transform: translateX(6px); }
.news-date {
    flex: none;
    width: 62px;
    text-align: center;
    border-right: 1px solid var(--c-line);
    padding-right: 12px;
}
.news-date b { display: block; font-size: 22px; font-weight: 800; color: var(--c-blue-600); line-height: 1; }
.news-date span { font-size: 12px; color: var(--c-muted); }
.news-row h4 {
    font-size: 15.5px;
    font-weight: 600;
    line-height: 1.55;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--t);
}
.news-row:hover h4 { color: var(--c-blue-600); }
.news-row p {
    font-size: 13px;
    color: var(--c-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   6.6 CTA 横幅
   ========================================================================== */
.cta-band {
    background: var(--grad-navy);
    position: relative;
    overflow: hidden;
}
.cta-band::before {
    content: "";
    position: absolute;
    right: -120px; top: -120px;
    width: 460px; height: 460px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(53, 198, 244, .2), transparent 68%);
}
/* 左下角补一枚环保青绿光斑，与右上角青蓝光斑形成对角平衡 */
.cta-band::after {
    content: "";
    position: absolute;
    left: -150px; bottom: -170px;
    width: 430px; height: 430px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 196, 166, .24), transparent 68%);
}
.cta-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 34px;
    padding-top: 52px;      /* 同上：不可用 padding 简写，否则覆盖 .wrap 的左右内边距 */
    padding-bottom: 52px;
    flex-wrap: wrap;
}
.cta-inner h2 { font-size: 30px; color: #fff; font-weight: 800; margin-bottom: 10px; }
.cta-inner p { color: rgba(255, 255, 255, .72); font-size: 15px; }
.cta-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cta-phone { display: flex; align-items: center; gap: 13px; color: #fff; }
.cta-phone-icon {
    width: 50px; height: 50px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(53, 198, 244, .16);
    color: var(--c-cyan-400);
    flex: none;
}
.cta-phone small { display: block; font-size: 12px; color: rgba(255, 255, 255, .82); }
/* 必须显式写 color：#fff —— 否则会被全局 `strong, b { color: var(--c-title) }` 接管，
   深色字铺在深蓝横幅上对比度仅 1.4，号码基本看不见 */
.cta-phone b { font-size: 23px; font-weight: 800; letter-spacing: .02em; color: #fff; }

/* ==========================================================================
   7. 内页
   ========================================================================== */
.page-hero {
    position: relative;
    background: var(--c-navy-900);
    overflow: hidden;
}
.page-hero-bg {
    position: absolute;
    inset: 0;
    background-image: url("../images/7545091.jpg");
    background-size: cover;
    background-position: center 58%;
    opacity: .22;
}
.page-hero-veil {
    position: absolute;
    inset: 0;
    /* 末两档：中段掺入青绿呼应品牌尾色；右侧加重压暗，压掉原图右上角红旗旗杆透出的一条红线 */
    background: linear-gradient(100deg,
        rgba(6, 26, 46, .95) 0%,
        rgba(14, 51, 85, .84) 42%,
        rgba(12, 60, 78, .88) 68%,
        rgba(8, 30, 46, .96) 100%);
}
.page-hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 62px;      /* 同上：不可用 padding 简写，否则覆盖 .wrap 的左右内边距 */
    padding-bottom: 62px;
}
.page-hero h1 {
    font-size: clamp(26px, 2.7vw, 40px);
    color: #fff;
    font-weight: 800;
    margin-bottom: 12px;
}
.page-hero .crumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, .6);
}
.page-hero .crumb a { color: rgba(255, 255, 255, .8); }
.page-hero .crumb a:hover { color: var(--c-cyan-400); }
.page-hero .crumb .sep { color: rgba(255, 255, 255, .34); }
.page-hero .crumb .cur { color: var(--c-cyan-400); }

/* 栏目切换条 */
/* 栏目切换条 —— 当前已从模板中移除（它渲染的是 {pboot:nav} 顶级栏目，与页头导航完全重复；
   页头是 sticky 常驻的，切换栏目直接用它即可）。以下样式保留备用：
   若日后某个栏目改出子栏目，想在内页顶部做「子栏目切换」，在 list.html / newslist.html /
   content.html / about.html 的 page-hero 之后加：
   <nav class="sortnav" aria-label="栏目导航"><div class="wrap"><ul>
     {pboot:nav parent="{sort:pcode}"}<li {pboot:if([nav:scode]=={sort:scode})}class="on"{/pboot:if}>
     <a href="[nav:link]" title="[nav:name]">[nav:name]</a></li>{/pboot:nav}
   </ul></div></nav> */
.sortnav { border-bottom: 1px solid var(--c-line); background: #fff; }
.sortnav ul { display: flex; flex-wrap: wrap; gap: 4px; }
.sortnav a {
    position: relative;
    display: block;
    padding: 20px 22px;
    font-size: 15.5px;
    font-weight: 600;
    color: var(--c-title);
}
.sortnav a::after {
    content: "";
    position: absolute;
    left: 22px; right: 22px; bottom: -1px;
    height: 3px;
    border-radius: 3px 3px 0 0;
    background: var(--grad-blue);
    transform: scaleX(0);
    transition: transform var(--t);
}
.sortnav a:hover { color: var(--c-blue-600); }
.sortnav a:hover::after,
.sortnav li.on a::after { transform: scaleX(1); }
.sortnav li.on a { color: var(--c-blue-600); }

/* 内容区 */
.page-body { padding: 62px 0 76px; background: #fff; }
.page-body--grey { background: var(--c-bg); }

/* 产品 / 案例 卡片列表 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--r-lg);
    overflow: hidden;
    transition: transform var(--t), box-shadow var(--t);
    will-change: transform;
}
.card:hover { transform: translateY(-7px); box-shadow: var(--sh-lg); }
.card-pic {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--c-bg);
}
.card-pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.4, 0, .2, 1); }
.card:hover .card-pic img { transform: scale(1.06); }
.card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card-body h2 { font-size: 17.5px; margin-bottom: 9px; }
.card-body h2 a:hover { color: var(--c-blue-600); }
.card-body p {
    font-size: 13.5px;
    color: var(--c-muted);
    line-height: 1.8;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}
.card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px dashed var(--c-line);
    font-size: 13px;
    color: var(--c-muted);
}
.card-foot .go {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-weight: 600;
    color: var(--c-blue-600);
}

/* 新闻列表 */
.newslist { border-top: 1px solid var(--c-line); }
.newslist-item {
    display: flex;
    gap: 26px;
    padding: 28px 26px;
    border-bottom: 1px solid var(--c-line);
    border-radius: var(--r-md);
    transition: background-color var(--t), transform var(--t), box-shadow var(--t);
    will-change: transform;
}
.newslist-item:hover {
    background: var(--c-bg);
    transform: translateX(5px);
    box-shadow: var(--sh-sm);
}
.newslist-date {
    flex: none;
    width: 82px;
    text-align: center;
    padding-right: 24px;
    border-right: 1px solid var(--c-line);
}
.newslist-date b { display: block; font-size: 30px; font-weight: 800; color: var(--c-blue-600); line-height: 1; }
.newslist-date span { display: block; font-size: 12.5px; color: var(--c-muted); margin-top: 5px; }
.newslist-main { min-width: 0; flex: 1; }
.newslist-main h2 { font-size: 17.5px; margin-bottom: 9px; }
.newslist-main h2 a:hover { color: var(--c-blue-600); }
.newslist-main p {
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.85;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.newslist-go {
    align-self: center;
    flex: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--r-full);
    border: 1px solid var(--c-line-d);
    font-size: 13px;
    font-weight: 600;
    color: var(--c-blue-600);
    transition: background-color var(--t), color var(--t), border-color var(--t);
}
.newslist-item:hover .newslist-go { background: var(--c-blue-600); color: #fff; border-color: var(--c-blue-600); }

/* 分页（对应 {page:bar} 输出的 page-status / page-index / page-pre / page-numbar / page-next / page-last） */
.pagination {
    margin-top: 44px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
}
.pagination > span { display: inline-flex; }
.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 15px;
    border-radius: var(--r-md);
    border: 1px solid var(--c-line-d);
    background: #fff;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-body);
    transition: background-color var(--t), color var(--t), border-color var(--t), transform var(--t);
}
.pagination a:hover {
    background: var(--c-blue-600);
    border-color: var(--c-blue-600);
    color: #fff;
    transform: translateY(-2px);
}
.pagination .page-status {
    padding: 0 10px;
    font-size: 13.5px;
    color: var(--c-muted);
    white-space: nowrap;
}
.pagination .page-num-current,
.pagination a.page-num-current {
    background: var(--grad-blue);
    border-color: transparent;
    color: #fff;
    cursor: default;
}
.pagination a.page-num-current:hover { transform: none; }
.pagination a[href^="javascript"] {
    color: var(--c-muted);
    background: var(--c-bg);
    cursor: not-allowed;
}
.pagination a[href^="javascript"]:hover {
    background: var(--c-bg);
    border-color: var(--c-line-d);
    color: var(--c-muted);
    transform: none;
}

/* ==========================================================================
   8. 详情页
   ========================================================================== */
.detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 42px;
    align-items: start;
}
.article {
    background: #fff;
    border-radius: var(--r-lg);
    border: 1px solid var(--c-line);
    padding: 40px 44px 44px;
}
.article-head {
    padding-bottom: 22px;
    border-bottom: 1px solid var(--c-line);
    margin-bottom: 28px;
}
.article-head h1 {
    font-size: 28px;
    font-weight: 800;
    line-height: 1.42;
    margin-bottom: 16px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    font-size: 13px;
    color: var(--c-muted);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta svg { color: var(--c-blue-500); }

/* 详情页主图（产品/案例的缩略图原比例展示） */
.article-figure {
    margin: 0 0 26px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    overflow: hidden;
    background: #fff;
}
.article-figure img { display: block; width: 100%; height: auto; }

.article-body {
    font-size: 15.5px;
    line-height: 2.05;
    color: var(--c-body);
    word-break: break-word;
}
.article-body p { margin-bottom: 18px; }
.article-body img { max-width: 100%; height: auto; border-radius: var(--r-md); margin: 18px 0; }
.article-body h2 { font-size: 21px; margin: 30px 0 14px; padding-left: 14px; border-left: 4px solid var(--c-blue-600); }
.article-body h3 { font-size: 18px; margin: 24px 0 12px; }
.article-body ul, .article-body ol { margin: 0 0 18px 22px; }
.article-body li { list-style: disc; margin-bottom: 8px; }
.article-body ol li { list-style: decimal; }
.article-body table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
.article-body th, .article-body td { border: 1px solid var(--c-line-d); padding: 11px 14px; }
.article-body th { background: var(--c-bg); font-weight: 700; color: var(--c-title); }
.article-body blockquote {
    margin: 20px 0;
    padding: 16px 22px;
    border-left: 4px solid var(--c-blue-500);
    background: var(--c-bg);
    border-radius: 0 var(--r-md) var(--r-md) 0;
    color: var(--c-body);
}
.article-body a { color: var(--c-blue-600); text-decoration: underline; }

/* 上一篇 / 下一篇 */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--c-line);
}
.article-nav-item {
    display: block;
    padding: 16px 18px;
    border-radius: var(--r-md);
    background: var(--c-bg);
    border: 1px solid transparent;
    transition: border-color var(--t), background-color var(--t);
    min-width: 0;
}
.article-nav-item:hover { border-color: var(--c-blue-500); background: #fff; }
.article-nav-item span { display: block; font-size: 12px; color: var(--c-muted); margin-bottom: 6px; }
.article-nav-item strong {
    display: block;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--c-title);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.article-nav-item:hover strong { color: var(--c-blue-600); }
.article-nav-item.is-next { text-align: right; }
.article-nav-item.is-disabled {
    pointer-events: none;
    opacity: .55;
}

/* 侧栏 */
.sidebar { display: flex; flex-direction: column; gap: 22px; position: sticky; top: 96px; }
.side-card {
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--r-lg);
    overflow: hidden;
}
.side-card-head {
    padding: 16px 22px;
    background: var(--grad-navy);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .02em;
}
.side-card-body { padding: 12px 14px 16px; }
.side-nav a {
    display: block;
    padding: 13px 16px;
    border-radius: var(--r-md);
    font-size: 14.5px;
    font-weight: 500;
    color: var(--c-body);
    border-left: 3px solid transparent;
    transition: background-color var(--t), color var(--t), border-color var(--t);
}
.side-nav a:hover { background: var(--c-bg); color: var(--c-blue-600); border-left-color: var(--c-blue-400); }
.side-nav li.on a {
    background: rgba(30, 136, 229, .08);
    color: var(--c-blue-600);
    font-weight: 700;
    border-left-color: var(--c-blue-600);
}

/* 侧栏推荐产品 */
.side-pro-list { padding: 8px; }
.side-pro {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px;
    border-radius: var(--r-md);
    transition: background-color var(--t);
}
.side-pro:hover { background: var(--c-bg); }
.side-pro img {
    width: 58px; height: 58px;
    flex: none;
    border-radius: var(--r-sm);
    object-fit: cover;
    background: var(--c-bg);
}
.side-pro b {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-title);
    line-height: 1.5;
    transition: color var(--t);
}
.side-pro:hover b { color: var(--c-blue-600); }
.side-pro em { font-style: normal; font-size: 12px; color: var(--c-muted); }

.side-contact { padding: 24px 22px; background: var(--grad-navy); color: #fff; }
.side-contact h3 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.side-contact > p { font-size: 13px; color: rgba(255, 255, 255, .66); margin-bottom: 18px; }
.side-contact-phone { display: flex; align-items: center; gap: 11px; margin-bottom: 18px; }
.side-contact-phone svg { color: var(--c-cyan-400); flex: none; }
.side-contact-phone small { display: block; font-size: 11.5px; color: rgba(255, 255, 255, .8); }
.side-contact-phone b { font-size: 20px; font-weight: 800; color: #fff; }
.side-contact .btn { width: 100%; justify-content: center; }

/* 单页富文本 */
.rich {
    background: #fff;
    border-radius: var(--r-lg);
    border: 1px solid var(--c-line);
    padding: 44px 48px;
    font-size: 15.5px;
    line-height: 2.05;
    color: var(--c-body);
}
.rich p { margin-bottom: 18px; }
.rich img { max-width: 100%; height: auto; border-radius: var(--r-md); margin: 18px 0; }
.rich h2 { font-size: 22px; margin: 30px 0 14px; padding-left: 14px; border-left: 4px solid var(--c-blue-600); }
.rich h3 { font-size: 18px; margin: 24px 0 12px; }
.rich ul, .rich ol { margin: 0 0 18px 22px; }
.rich li { list-style: disc; margin-bottom: 8px; }

/* 联系信息卡 */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 34px; }

/* 公司简介：厂区全景横幅 + 三图画廊 */
.about-visual-img {
    margin: 0 0 24px;
    position: relative;
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: var(--sh-md);
}
.about-visual-img--wide img { display: block; width: 100%; height: 300px; object-fit: cover; }
.about-visual-img figcaption {
    position: absolute;
    left: 14px; bottom: 14px;
    padding: 6px 14px;
    border-radius: var(--r-full);
    background: rgba(6, 26, 46, .68);
    color: #fff;
    font-size: 13px;
    letter-spacing: .04em;
}
.about-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 24px;
}
.about-gallery figure {
    margin: 0;
    background: #fff;
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: var(--sh-sm);
    transition: transform var(--t), box-shadow var(--t);
}
.about-gallery figure:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.about-gallery img { display: block; width: 100%; height: 190px; object-fit: cover; }
.about-gallery figcaption {
    padding: 11px 12px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-title);
}

.contact-card {
    background: var(--c-bg);
    border: 1px solid var(--c-line);
    border-radius: var(--r-lg);
    padding: 26px 22px;
    text-align: center;
    transition: transform var(--t), box-shadow var(--t), background-color var(--t);
    will-change: transform;
}
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--sh-md); background: #fff; }
.contact-card-icon {
    width: 52px; height: 52px;
    margin: 0 auto 14px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(140deg, rgba(30, 136, 229, .12), rgba(53, 198, 244, .16));
    color: var(--c-blue-600);
}
.contact-card h3 { font-size: 15px; color: var(--c-muted); font-weight: 600; margin-bottom: 7px; }
.contact-card p { font-size: 16.5px; font-weight: 700; color: var(--c-title); word-break: break-all; }

/* 微信板块：独立横幅卡，位于三张联系卡下方，与卡片网格分层 */
.wechat-band {
    display: flex;
    align-items: center;
    gap: 26px;
    padding: 22px 26px;
    border-radius: var(--r-md);
    background: linear-gradient(135deg, rgba(30, 136, 229, .07), rgba(53, 198, 244, .11));
    border: 1px solid rgba(30, 136, 229, .16);
}
.wechat-band img {
    width: 120px; height: 120px;
    object-fit: cover;
    border-radius: var(--r-sm);
    flex: none;
    background: #fff;
    padding: 5px;
    border: 1px solid var(--c-line-d);
}
.wechat-band-txt h3 { font-size: 19px; font-weight: 700; color: var(--c-title); margin-bottom: 9px; }
.wechat-band-txt p { font-size: 14.5px; color: var(--c-muted); line-height: 1.8; }
.wechat-band-txt .btn { margin-top: 14px; }

/* 空状态 */
.empty-state { text-align: center; padding: 66px 20px; }
.empty-state b { display: block; font-size: 19px; color: var(--c-title); margin-bottom: 10px; }
.empty-state p { font-size: 14px; color: var(--c-muted); }
.empty-state svg { color: var(--c-line-d); margin: 0 auto 18px; }

/* ==========================================================================
   9. 页脚
   ========================================================================== */
.site-footer {
    background: var(--c-navy-900);
    color: rgba(255, 255, 255, .62);
    font-size: 14px;
}
.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
    gap: 46px;
    padding: 62px 0 48px;
}
.footer-brand .brand-name { color: #fff; font-size: 19px; margin-bottom: 6px; }
.footer-brand .brand-sub { color: rgba(255, 255, 255, .55); margin-bottom: 18px; }
.footer-brand .brand-mark { margin-bottom: 16px; }
.footer-about { font-size: 13.5px; line-height: 1.95; color: rgba(255, 255, 255, .55); margin-bottom: 20px; }
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-tags a {
    padding: 4px 12px;
    border-radius: var(--r-full);
    background: rgba(255, 255, 255, .07);
    font-size: 12px;
    color: rgba(255, 255, 255, .68);
    transition: background-color var(--t), color var(--t);
}
.footer-tags a:hover { background: var(--c-blue-600); color: #fff; }

.footer-col h3 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 12px;
    position: relative;
}
.footer-col h3::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 30px; height: 2.5px;
    border-radius: 2px;
    background: var(--grad-blue);
}
.footer-links li { margin-bottom: 11px; }
.footer-links a { color: rgba(255, 255, 255, .6); transition: color var(--t), padding-left var(--t); }
.footer-links a:hover { color: var(--c-cyan-400); padding-left: 5px; }

.footer-contact li {
    display: flex;
    gap: 11px;
    margin-bottom: 14px;
    line-height: 1.7;
}
.footer-contact svg { color: var(--c-cyan-400); flex: none; margin-top: 3px; }
.footer-contact a { color: rgba(255, 255, 255, .72); }
.footer-contact a:hover { color: var(--c-cyan-400); }
.footer-contact b { color: #fff; font-size: 17px; font-weight: 800; }

.footer-brand .brand-mark { height: 44px; width: auto; margin-bottom: 14px; }
.footer-about { margin-top: 0; }

/* 友情链接条：位于页脚主区与版权条之间 */
.friendlink {
    display: flex;
    align-items: flex-start;
    gap: 12px 18px;
    flex-wrap: wrap;
    padding: 18px 0;
    border-top: 1px solid rgba(255, 255, 255, .1);
}
/* 空态：后台一条链接都没有时整条隐藏（:has 已获主流浏览器支持；老浏览器最多显示一条空栏，不会丢功能） */
.friendlink:not(:has(.friendlink-list a)) { display: none; }
.friendlink-label {
    flex: none;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13.5px;
    font-weight: 700;
    color: rgba(255, 255, 255, .92);
    letter-spacing: .04em;
}
.friendlink-label svg { color: var(--c-teal-400); }
.friendlink-list {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 26px;
}
.friendlink-list a {
    font-size: 13.5px;
    color: rgba(255, 255, 255, .58);
    transition: color var(--t);
}
.friendlink-list a:hover { color: var(--c-teal-400); }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: 22px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
}
.footer-bottom a { color: rgba(255, 255, 255, .55); }
.footer-bottom a:hover { color: var(--c-cyan-400); }

/* 回到顶部 */
.backtop {
    position: fixed;
    right: 26px; bottom: 34px;
    width: 48px; height: 48px;
    border-radius: var(--r-md);
    display: grid;
    place-items: center;
    background: var(--c-blue-600);
    color: #fff;
    box-shadow: var(--sh-blue);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--t), transform var(--t), visibility var(--t), background-color var(--t);
    z-index: 800;
}
.backtop.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.backtop:hover { background: var(--c-navy-700); }

/* 悬浮电话按钮：常驻显示（不随滚动显隐），叠在「悬浮二维码」正上方。
   尺寸/圆角/阴影与 .backtop 保持一致，用品牌渐变区分主次。
   bottom = 94(float-qr bottom) + 48(float-qr 高) + 12(间隙)，改 .float-qr/.backtop 时记得同步。 */
.float-phone {
    position: fixed;
    right: 26px;
    bottom: 154px;
    width: 48px;
    height: 48px;
    border-radius: var(--r-md);
    display: grid;
    place-items: center;
    background: var(--grad-blue);
    color: #fff;
    box-shadow: var(--sh-blue);
    z-index: 800;
    transition: transform var(--t), box-shadow var(--t);
}
.float-phone:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(13, 90, 167, .34); }
.float-phone svg { display: block; }

/* 号码标签：绝对定位甩到按钮左侧，展开时不影响按钮本体尺寸。
   底色用白色而非深蓝 —— 页脚本身就是 --c-navy-900，深蓝药丸贴上去会糊成一片看不清。 */
.float-phone-label {
    position: absolute;
    right: calc(100% + 10px);
    top: 50%;
    transform: translate(8px, -50%);
    padding: 7px 14px;
    border-radius: var(--r-full);
    background: #fff;
    color: var(--c-navy-900);
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: .02em;
    white-space: nowrap;
    box-shadow: 0 8px 22px rgba(6, 26, 46, .18);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--t), transform var(--t), visibility var(--t);
}
/* 只在真正支持 hover 的设备上展开，触屏不会误触发 */
@media (hover: hover) {
    .float-phone:hover .float-phone-label,
    .float-phone:focus-visible .float-phone-label {
        opacity: 1;
        visibility: visible;
        transform: translate(0, -50%);
    }
}

/* 悬浮二维码按钮：常驻，位于「回到顶部」正上方、「悬浮电话」正下方。
   bottom = 34(backtop bottom) + 48(backtop 高) + 12(间隙)，改 .backtop 时记得同步。 */
.float-qr {
    position: fixed;
    right: 26px;
    bottom: 94px;
    width: 48px;
    height: 48px;
    border-radius: var(--r-md);
    display: grid;
    place-items: center;
    background: var(--grad-blue);
    color: #fff;
    box-shadow: var(--sh-blue);
    z-index: 800;
    border: 0;
    cursor: pointer;
    transition: transform var(--t), box-shadow var(--t);
}
.float-qr:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(13, 90, 167, .34); }
.float-qr svg { display: block; }

/* 二维码弹层：甩到按钮左侧，白卡 + 二维码 + 文案；触屏用 .is-open（JS 点击切换）展开 */
.float-qr-pop {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translate(8px, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 12px 10px;
    border-radius: var(--r-md);
    background: #fff;
    box-shadow: 0 10px 30px rgba(6, 26, 46, .22);
    /* 锁宽：弹层是 absolute 收缩定位，全局 img{max-width:100%} 会把二维码宽度
       钳到收缩后的异常宽度而高度仍是定值 → 变形。width:max-content + img
       max-width:none 双保险，保证二维码恒为正方形。 */
    width: max-content;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--t), transform var(--t), visibility var(--t);
}
.float-qr-pop img {
    display: block;
    width: 132px; height: 132px;
    max-width: none;
    object-fit: cover;
    border-radius: var(--r-sm);
}
.float-qr-pop b { font-size: 13.5px; color: var(--c-navy-900); }
.float-qr-pop em { font-style: normal; font-size: 12px; color: var(--c-muted); white-space: nowrap; }
.float-qr.is-open .float-qr-pop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(0, -50%);
}
@media (hover: hover) {
    .float-qr:hover .float-qr-pop,
    .float-qr:focus-visible .float-qr-pop {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translate(0, -50%);
    }
}

/* 移动端抽屉导航 */
.mobile-mask {
    position: fixed;
    inset: 0;
    background: rgba(6, 26, 46, .55);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t), visibility var(--t);
    z-index: 950;
}
.mobile-mask.is-open { opacity: 1; visibility: visible; }

.mobile-panel {
    position: fixed;
    top: 0; right: 0;
    width: min(84vw, 340px);
    height: 100%;
    background: #fff;
    z-index: 960;
    transform: translateX(100%);
    transition: transform .32s cubic-bezier(.4, 0, .2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -10px 0 40px rgba(6, 26, 46, .2);
}
.mobile-panel.is-open { transform: translateX(0); }
.mobile-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid var(--c-line);
}
.mobile-panel-head strong { font-size: 16px; color: var(--c-title); }
.mobile-close {
    width: 38px; height: 38px;
    border-radius: var(--r-md);
    display: grid;
    place-items: center;
    border: 1px solid var(--c-line-d);
    color: var(--c-title);
}
.mobile-nav { flex: 1; overflow-y: auto; padding: 10px 14px; }
.mobile-nav a {
    display: block;
    padding: 14px 14px;
    border-radius: var(--r-md);
    font-size: 16px;
    font-weight: 600;
    color: var(--c-title);
    border-bottom: 1px solid var(--c-line);
}
.mobile-nav li:last-child a { border-bottom: 0; }
.mobile-nav li.on a { color: var(--c-blue-600); background: rgba(30, 136, 229, .07); }
.mobile-panel-foot { padding: 18px 20px; border-top: 1px solid var(--c-line); background: var(--c-bg); }
.mobile-panel-foot small { display: block; font-size: 12px; color: var(--c-muted); margin-bottom: 4px; }
.mobile-panel-foot b { font-size: 20px; font-weight: 800; color: var(--c-navy-800); }

/* ==========================================================================
   10. 响应式
   ========================================================================== */
/* 页头元素较多（logo + 6 项导航 + 搜索 + 电话 + 按钮），
   分档收紧以避免在 1440 / 1366 等常见宽度下溢出 */
@media (max-width: 1440px) {
    .mainnav a { padding: 26px 12px; }
    .mainnav a::after { left: 12px; right: 12px; }
    .header-cta { gap: 10px; }
}

@media (max-width: 1320px) {
    .header-phone { display: none; }
    .brand-sub { display: none; }
    .mainnav a { padding: 26px 15px; }
    .mainnav a::after { left: 15px; right: 15px; }
}

@media (max-width: 1200px) {
    :root { --gap: 20px; }
    .mainnav a { padding: 24px 12px; font-size: 15px; }
    .mainnav a::after { left: 12px; right: 12px; }
    .feat-grid { grid-template-columns: repeat(2, 1fr); }
    .pro-grid { grid-template-columns: repeat(3, 1fr); }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-main { grid-template-columns: 1.4fr 1fr 1.3fr; gap: 36px; }
    .footer-brand { grid-column: 1 / -1; }
    .detail-grid { grid-template-columns: minmax(0, 1fr) 290px; gap: 30px; }
}

@media (max-width: 1024px) {
    .mainnav, .header-phone { display: none; }
    .nav-toggle { display: grid; }
    .header-cta .btn { display: none; }
    .hero-inner { padding-top: 68px; padding-bottom: 72px; }
    .hero-slogan { gap: 12px; }
    .hero-couplet { letter-spacing: .1em; }
    .about-grid { grid-template-columns: 1fr; gap: 38px; }
    .about-visual { max-width: 620px; }
    .app-grid { grid-template-columns: repeat(2, 1fr); }
    .news-feature { grid-template-columns: 1fr; }
    .news-hero { min-height: 320px; }
    .detail-grid { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .contact-cards { grid-template-columns: 1fr; }
    .about-visual-img--wide img { height: 190px; }
    .about-gallery { grid-template-columns: 1fr; gap: 16px; }
    .about-gallery img { height: 210px; }
    .wechat-band { gap: 18px; padding: 18px; }
    .wechat-band img { width: 104px; height: 104px; }
    .article { padding: 32px 28px 34px; }
    .rich { padding: 32px 26px; }
}

@media (max-width: 768px) {
    body { font-size: 14.5px; }
    .section { padding: 56px 0; }
    .section--tight { padding: 44px 0; }
    .sec-head { margin-bottom: 32px; }
    .sec-title { font-size: 25px; }
    .sec-desc { font-size: 14px; }

    .brand-mark { height: 38px; }
    .brand-name { font-size: 17px; }
    .brand-sub { font-size: 9.5px; letter-spacing: .12em; }

    .hero-inner { padding-top: 52px; padding-bottom: 56px; }
    .hero-slogan { font-size: 31px; gap: 10px; }
    .slogan-sep { height: 4px; }
    .hero-couplet { font-size: 14.5px; letter-spacing: .08em; margin-bottom: 22px; }
    .hero-badge { margin-bottom: 24px; }
    .hero-lead { font-size: 15px; margin-bottom: 26px; }
    .hero-actions { margin-bottom: 30px; }
    .hero-actions .btn { flex: 1; justify-content: center; min-width: 150px; }
    .hero-trust { gap: 10px 18px; padding-top: 22px; }
    .hero-trust li { font-size: 13px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .hero-stats div { padding: 20px 12px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
    .hero-stats div:nth-child(2n) { border-right: 0; }
    .hero-stats b { font-size: 25px; }

    .feat-grid { grid-template-columns: 1fr; gap: 16px; }
    .feat { padding: 26px 22px; }
    .pro-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .pro-body { padding: 15px 14px 17px; }
    .pro-body h3 { font-size: 15.5px; }
    .pro-body p { display: none; }
    .pro-foot { font-size: 12.5px; padding-top: 12px; }
    .card-grid { grid-template-columns: 1fr; gap: 18px; }
    .app-grid { grid-template-columns: 1fr; gap: 14px; }
    .app { padding: 20px; }

    .about-body h2 { font-size: 24px; }
    .about-list { grid-template-columns: 1fr; gap: 10px; }
    .about-visual::after { display: none; }
    .about-badge { left: 12px; bottom: 12px; padding: 12px 16px; }
    .about-badge b { font-size: 22px; }

    .news-row { gap: 12px; padding: 15px 0; }
    .news-date { width: 52px; padding-right: 10px; }
    .news-date b { font-size: 19px; }
    .news-row h4 { font-size: 14.5px; }
    .news-hero-body { padding: 22px 20px; }
    .news-hero-body h3 { font-size: 17.5px; }

    .cta-inner { padding-top: 40px; padding-bottom: 40px; flex-direction: column; align-items: flex-start; gap: 24px; }
    .cta-inner h2 { font-size: 23px; }
    .cta-actions { width: 100%; }
    .cta-actions .btn { flex: 1; justify-content: center; }

    /* 手机端：整列布局下，孤零零的 50px 半透明圆圈像一颗浮在半空的泡泡，很突兀。
       改为整宽的「致电卡片」（与下方整宽按钮左右对齐），图标改成与
       .contact-card-icon 一致的 14px 圆角方形磁贴，视觉语言统一。 */
    .cta-phone {
        width: 100%;
        gap: 12px;
        padding: 12px 16px 12px 14px;
        border-radius: 14px;
        background: rgba(53, 198, 244, .09);
        border: 1px solid rgba(53, 198, 244, .2);
    }
    .cta-phone-icon {
        width: 42px; height: 42px;
        border-radius: 12px;
        background: rgba(53, 198, 244, .2);
    }

    .page-hero-inner { padding-top: 44px; padding-bottom: 44px; }
    .sortnav ul { flex-wrap: wrap; justify-content: center; gap: 0 2px; }
    .sortnav a { padding: 15px 16px; font-size: 14.5px; white-space: nowrap; }
    .sortnav a::after { left: 16px; right: 16px; }
    .page-body { padding: 40px 0 52px; }

    .newslist-item { flex-direction: column; gap: 12px; padding: 22px 16px; }
    .newslist-date {
        width: auto;
        text-align: left;
        padding: 0 0 10px;
        border-right: 0;
        border-bottom: 1px solid var(--c-line);
        display: flex;
        align-items: baseline;
        gap: 8px;
    }
    .newslist-date b { font-size: 20px; }
    .newslist-date span { margin-top: 0; }
    .newslist-main h2 { font-size: 16px; }
    .newslist-go { align-self: flex-start; }

    .article-head h1 { font-size: 21px; }
    .article-body { font-size: 15px; }
    .article-nav { grid-template-columns: 1fr; }
    .article-nav-item.is-next { text-align: left; }

    /* 手机端页脚：原来「品牌 / 网站导航 / 产品中心 / 联系方式」四段一路竖排，
       两条链接列表各占一整行、右侧大片留白，整块又高又散。
       改成两列网格：品牌整宽 → 两个链接栏并排 → 联系方式整宽。 */
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 26px 20px;
        padding: 38px 0 30px;
        align-items: start;
    }
    .footer-brand { grid-column: 1 / -1; }
    /* 最后一个「联系方式」整宽（用 :last-child 而非 :last-of-type，避免依赖标签类型） */
    .footer-main > :last-child { grid-column: 1 / -1; }

    /* 并排后每栏变窄，纵向间距同步收紧，两栏高度更接近 */
    .footer-col h3 { font-size: 15px; margin-bottom: 15px; padding-bottom: 10px; }
    .footer-links li { margin-bottom: 9px; }
    .footer-contact li { margin-bottom: 11px; }

    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
    .backtop { right: 16px; bottom: 20px; width: 44px; height: 44px; }
    /* 与上面 .backtop 同步收紧：float-qr bottom = 20 + 44 + 10；float-phone bottom = 74 + 44 + 10 */
    .float-qr { right: 16px; bottom: 74px; width: 44px; height: 44px; }
    .float-phone { right: 16px; bottom: 128px; width: 44px; height: 44px; }
    .float-phone-label { font-size: 13px; padding: 6px 12px; }
    .float-qr-pop img { width: 116px; height: 116px; }

    .pagination a { min-width: 38px; height: 38px; padding: 0 12px; font-size: 13px; }
    .pagination .page-status { width: 100%; text-align: center; }
}

@media (max-width: 480px) {
    :root { --gap: 16px; }
    .pro-grid { gap: 12px; }

    /* 超窄屏收紧头部：隐藏英文副标题并缩小品牌区，确保品牌 + 搜索 + 菜单一行放得下 */
    .site-header .wrap { gap: 10px; min-height: 64px; }
    .brand { gap: 10px; }
    .brand-mark { height: 34px; }
    .brand .brand-name { font-size: 15.5px; }
    .brand .brand-sub { display: none; }

    .hero h1 { font-size: 24px; }
    /* 超窄屏：按钮文字避免折成两行 */
    .hero-actions { gap: 10px; }
    .hero-actions .btn { min-width: 0; padding-left: 16px; padding-right: 16px; font-size: 15px; }
    /* 隐藏左侧标语后，顶栏仅剩联系方式，居中更稳 */
    .topbar .wrap { justify-content: center; }
    .topbar-list { gap: 16px; }
    .hero-badge { font-size: 12px; padding: 6px 13px; }
    .topbar { font-size: 12px; }
    .topbar-left { display: none; }
    .hero-stats b { font-size: 22px; }
    /* 超窄屏再收紧一档致电卡片，保证「全国服务热线 + 11 位号码」一行放得下 */
    .cta-phone { padding: 11px 14px 11px 12px; gap: 11px; }
    .cta-phone-icon { width: 40px; height: 40px; border-radius: 11px; }
    .cta-phone b { font-size: 20px; }
    .cta-phone small { font-size: 11.5px; }

    /* 超窄屏页脚：两栏间距再收一档，链接行距压紧 */
    .footer-main { gap: 22px 16px; padding: 32px 0 26px; }
    .footer-col h3 { font-size: 14.5px; margin-bottom: 13px; }
    .footer-links li { margin-bottom: 8px; }
    .footer-about { font-size: 13px; line-height: 1.9; }
    .article { padding: 24px 18px 26px; }
    .rich { padding: 24px 18px; }
}