/* ============================================================
   澎湃制冷官网样式
   主题：冷库 / 制冷 —— 深海蓝 + 冰晶青
   ============================================================ */

:root {
    --navy:       #0a1e2e;
    --navy-2:     #0e2a42;
    --navy-soft:  #12324d;
    --ice:        #18c6d8;
    --ice-light:  #4fd6e3;
    --ice-dark:   #0f9fb0;
    --blue:       #1f7ad1;
    --grad:       linear-gradient(135deg, #18c6d8 0%, #1f7ad1 100%);
    --bg:         #f5f9fc;
    --bg-alt:     #eef4f9;
    --white:      #ffffff;
    --text:       #16222e;
    --muted:      #5b6b78;
    --line:       #e3ecf3;
    --shadow-sm:  0 2px 10px rgba(10, 30, 46, 0.06);
    --shadow-md:  0 12px 34px rgba(10, 30, 46, 0.12);
    --shadow-lg:  0 24px 60px rgba(10, 30, 46, 0.18);
    --radius:     14px;
    --radius-lg:  22px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
            "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
svg { fill: currentColor; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 13px 30px; border-radius: 999px; font-size: 15px; font-weight: 600;
    border: 1px solid transparent; cursor: pointer; transition: all .25s ease;
    line-height: 1.2; white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 8px 22px rgba(24, 198, 216, .35); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(24, 198, 216, .45); }
.btn--ghost { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .5); backdrop-filter: blur(4px); }
.btn--ghost:hover { background: rgba(255, 255, 255, .24); }
.btn--light { background: #fff; color: var(--navy); box-shadow: var(--shadow-md); }
.btn--light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn--sm { padding: 9px 20px; font-size: 14px; }

/* ---------- 顶栏 ---------- */
.site-topbar {
    background: var(--navy); color: rgba(255, 255, 255, .82); font-size: 13px;
    position: relative; z-index: 60;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 40px; }
.topbar-left { display: flex; align-items: center; gap: 10px; }
.topbar-item { display: inline-flex; align-items: center; gap: 7px; }
.topbar-item svg { width: 15px; height: 15px; color: var(--ice-light); }
.topbar-item--muted { color: rgba(255, 255, 255, .6); }
.topbar-item--divider { color: rgba(255, 255, 255, .25); }
.topbar-right { display: flex; align-items: center; }
.lang-switch {
    display: inline-flex; align-items: center; border: 1px solid rgba(255, 255, 255, .45);
    border-radius: 999px; overflow: hidden; background: rgba(255, 255, 255, .08);
}
.lang-opt {
    padding: 4px 14px; font-size: 13px; font-weight: 700; line-height: 1.5;
    color: rgba(255, 255, 255, .78); transition: all .2s;
}
.lang-opt:hover { color: #fff; }
.lang-opt.is-active { background: var(--ice); color: #fff; }

/* ---------- 头部导航 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50; background: var(--white);
    box-shadow: 0 1px 0 var(--line); transition: box-shadow .3s ease;
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-logo {
    width: 44px; height: 44px; border-radius: 12px; background: var(--grad);
    display: flex; align-items: center; justify-content: center; color: #fff;
    box-shadow: 0 6px 16px rgba(24, 198, 216, .35);
}
.brand-logo svg { width: 26px; height: 26px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-size: 21px; font-weight: 800; letter-spacing: .5px; color: var(--navy); }
.brand-sub { font-size: 10px; letter-spacing: 2px; color: var(--ice-dark); font-weight: 600; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 26px; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-item a {
    display: block; padding: 8px 16px; font-size: 15px; font-weight: 500; color: var(--text);
    border-radius: 8px; position: relative; transition: color .2s;
}
.nav-item a::after {
    content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 2px;
    background: var(--grad); border-radius: 2px; transform: scaleX(0); transform-origin: left;
    transition: transform .25s ease;
}
.nav-item a:hover, .nav-item.is-active a { color: var(--ice-dark); }
.nav-item a:hover::after, .nav-item.is-active a::after { transform: scaleX(1); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--navy); border-radius: 2px; transition: all .3s ease; }

/* ---------- Hero 轮播 ---------- */
.hero { position: relative; height: min(88vh, 760px); min-height: 560px; overflow: hidden; background: var(--navy); }
.hero-slide {
    position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 1s ease;
}
.hero-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.06); transition: transform 6s ease; }
.hero-slide.is-active .hero-bg { transform: scale(1); }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(100deg, rgba(8, 22, 34, .92) 0%, rgba(8, 22, 34, .68) 45%, rgba(8, 22, 34, .25) 100%);
}
.hero-content {
    position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column;
    justify-content: center; max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
}
.hero-kicker {
    display: inline-flex; align-items: center; gap: 10px; color: var(--ice-light);
    font-weight: 600; font-size: 14px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 22px;
}
.hero-kicker::before { content: ""; width: 34px; height: 2px; background: var(--ice); }
.hero-title {
    font-size: clamp(34px, 5.4vw, 62px); line-height: 1.15; font-weight: 800; color: #fff;
    max-width: 720px; margin-bottom: 20px; letter-spacing: .5px;
}
.hero-sub { font-size: clamp(16px, 2vw, 20px); color: rgba(255, 255, 255, .85); max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-dots { position: absolute; z-index: 3; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.hero-dot { width: 10px; height: 10px; border-radius: 999px; background: rgba(255, 255, 255, .4); border: 0; cursor: pointer; transition: all .3s; }
.hero-dot.is-active { width: 28px; background: var(--ice); }
.hero-arrow {
    position: absolute; z-index: 3; top: 50%; transform: translateY(-50%); width: 48px; height: 48px;
    border-radius: 50%; background: rgba(255, 255, 255, .12); color: #fff; border: 1px solid rgba(255,255,255,.25);
    display: flex; align-items: center; justify-content: center; cursor: pointer; backdrop-filter: blur(4px); transition: background .2s;
}
.hero-arrow:hover { background: rgba(255, 255, 255, .26); }
.hero-arrow svg { width: 20px; height: 20px; }
.hero-arrow--prev { left: 22px; }
.hero-arrow--next { right: 22px; }
.hero-scroll {
    position: absolute; z-index: 3; bottom: 26px; right: 34px; color: rgba(255,255,255,.75);
    font-size: 12px; letter-spacing: 1px; display: flex; align-items: center; gap: 8px; writing-mode: vertical-rl;
}
.hero-scroll svg { width: 16px; height: 16px; animation: bounce 2s infinite; }

@keyframes bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ---------- 区块 / 标题 ---------- */
.section { padding: 90px 0; }
.section--alt { background: var(--bg); }
.section--white { background: var(--white); }
.section-head { max-width: 640px; margin: 0 auto 54px; text-align: center; }
.section-head--left { margin-left: 0; text-align: left; }
.kicker {
    display: inline-flex; align-items: center; gap: 12px; color: var(--ice-dark);
    font-weight: 700; font-size: 13px; letter-spacing: 2.5px; text-transform: uppercase; margin-bottom: 14px;
}
.kicker::before, .kicker::after { content: ""; width: 22px; height: 2px; background: var(--ice); }
.section-head--left .kicker::after { display: none; }
.section-title { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; color: var(--navy); line-height: 1.25; margin-bottom: 14px; }
.section-sub { color: var(--muted); font-size: 16px; }

/* ---------- 统计数字 ---------- */
.stats { background: var(--grad); position: relative; overflow: hidden; }
.stats::after {
    content: ""; position: absolute; right: -120px; top: -120px; width: 340px; height: 340px;
    background: radial-gradient(circle, rgba(255,255,255,.18), transparent 70%); border-radius: 50%;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; }
.stat { text-align: center; color: #fff; padding: 10px 0; }
.stat-num { font-size: clamp(30px, 4vw, 46px); font-weight: 800; line-height: 1.1; }
.stat-num span { font-size: .55em; font-weight: 700; }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, .85); margin-top: 6px; letter-spacing: .5px; }

/* ---------- 关于预览 ---------- */
.about-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-media { position: relative; }
.about-media .media-main { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-media .media-main img { width: 100%; height: 460px; object-fit: cover; }
.about-media .media-badge {
    position: absolute; left: -20px; bottom: 30px; background: var(--navy); color: #fff;
    padding: 22px 26px; border-radius: var(--radius); box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 14px;
}
.media-badge .num { font-size: 30px; font-weight: 800; color: var(--ice-light); }
.media-badge .txt { font-size: 13px; color: rgba(255,255,255,.8); line-height: 1.4; }
.about-body h3 { font-size: 24px; font-weight: 700; color: var(--navy); margin-bottom: 18px; }
.about-para { color: var(--muted); margin-bottom: 16px; }

/* ---------- 服务 ---------- */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 38px 30px;
    transition: all .3s ease; position: relative; overflow: hidden;
}
.service-card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad);
    transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
    width: 60px; height: 60px; border-radius: 14px; background: rgba(24, 198, 216, .12); color: var(--ice-dark);
    display: flex; align-items: center; justify-content: center; margin-bottom: 22px;
}
.service-icon svg { width: 30px; height: 30px; }
.service-title { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.service-desc { color: var(--muted); font-size: 14.5px; }

/* ---------- 核心优势 ---------- */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-item { text-align: center; padding: 34px 22px; border-radius: var(--radius); background: var(--bg); transition: all .3s; }
.feature-item:hover { background: #fff; box-shadow: var(--shadow-md); transform: translateY(-6px); }
.feature-icon { width: 64px; height: 64px; border-radius: 50%; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; box-shadow: 0 8px 20px rgba(24, 198, 216, .32); }
.feature-icon svg { width: 30px; height: 30px; }
.feature-title { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.feature-desc { font-size: 14px; color: var(--muted); }

/* ---------- 案例卡片 ---------- */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
    background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
    transition: all .3s ease; display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: transparent; }
.case-thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-thumb img { transform: scale(1.08); }
.case-badge {
    position: absolute; top: 16px; left: 16px; background: rgba(10, 30, 46, .82); color: #fff;
    font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 999px; backdrop-filter: blur(4px);
}
.case-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.case-title { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 12px; line-height: 1.4; }
.case-title a:hover { color: var(--ice-dark); }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 14px; color: var(--muted); font-size: 13px; }
.case-meta-item { display: inline-flex; align-items: center; gap: 5px; }
.case-meta-item svg { width: 14px; height: 14px; color: var(--ice-dark); }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.tag { background: var(--bg-alt); color: var(--muted); font-size: 12px; padding: 4px 11px; border-radius: 999px; font-weight: 500; }
.tag--accent { background: rgba(24, 198, 216, .12); color: var(--ice-dark); }

/* ---------- CTA 横幅 ---------- */
.cta { position: relative; background: var(--navy); overflow: hidden; }
.cta::before, .cta::after {
    content: ""; position: absolute; border-radius: 50%; background: radial-gradient(circle, rgba(24,198,216,.25), transparent 70%);
}
.cta::before { width: 400px; height: 400px; left: -140px; top: -160px; }
.cta::after { width: 300px; height: 300px; right: -100px; bottom: -140px; }
.cta-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-title { color: #fff; font-size: clamp(24px, 3.2vw, 34px); font-weight: 800; margin-bottom: 8px; }
.cta-sub { color: rgba(255, 255, 255, .75); font-size: 16px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, .72); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.4fr; gap: 48px; padding: 70px 24px 50px; }
.brand--footer { margin-bottom: 20px; }
.brand--footer .brand-name { color: #fff; }
.brand--footer .brand-sub { color: var(--ice-light); }
.footer-about { font-size: 14px; line-height: 1.8; max-width: 340px; }
.footer-title { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--ice); }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-links a:hover { color: var(--ice-light); padding-left: 6px; }
.footer-contact li { display: flex; gap: 12px; margin-bottom: 16px; font-size: 14px; align-items: flex-start; }
.footer-contact svg { width: 18px; height: 18px; color: var(--ice-light); flex-shrink: 0; margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); }
.footer-bottom-inner { padding: 22px 24px; font-size: 13px; color: rgba(255, 255, 255, .5); }

/* ---------- 内页页头 ---------- */
.page-hero {
    position: relative; background: var(--navy); color: #fff; padding: 90px 0 84px; overflow: hidden;
}
.page-hero::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(600px 300px at 80% 20%, rgba(24,198,216,.25), transparent 70%);
}
.page-hero .container { position: relative; z-index: 1; text-align: center; }
.page-hero-title { font-size: clamp(30px, 4.4vw, 46px); font-weight: 800; margin-bottom: 12px; }
.page-hero-sub { color: rgba(255, 255, 255, .78); font-size: 16px; max-width: 560px; margin: 0 auto; }
.breadcrumb { margin-top: 20px; font-size: 13px; color: rgba(255, 255, 255, .6); display: flex; justify-content: center; gap: 8px; align-items: center; }
.breadcrumb a { color: var(--ice-light); }
.breadcrumb-sep { color: rgba(255,255,255,.35); }
.breadcrumb .current { color: rgba(255,255,255,.85); }

/* ---------- 关于页 ---------- */
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.story-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; height: 440px; object-fit: cover; }
.story-body p { color: var(--muted); margin-bottom: 16px; white-space: pre-line; }

.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 11px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.timeline-item { position: relative; padding: 0 0 40px 34px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
    position: absolute; left: -30px; top: 4px; width: 20px; height: 20px; border-radius: 50%;
    background: #fff; border: 4px solid var(--ice); box-shadow: 0 0 0 4px rgba(24,198,216,.15);
}
.timeline-year { font-size: 22px; font-weight: 800; color: var(--ice-dark); margin-bottom: 6px; }
.timeline-event { color: var(--muted); font-size: 15px; }

.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card { text-align: center; cursor: zoom-in; }
.team-avatar {
    position: relative;
    width: 100%; aspect-ratio: 1 / 1.12; border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-sm); margin-bottom: 16px; background: var(--bg-alt);
}
.team-avatar img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.team-card:hover .team-avatar img { transform: scale(1.06); }
.team-view {
    position: absolute; inset: 0; background: rgba(10, 30, 46, .45); color: #fff;
    display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity .3s;
}
.team-view svg { width: 32px; height: 32px; }
.team-card:hover .team-view { opacity: 1; }
.team-name { font-size: 17px; font-weight: 700; color: var(--navy); }
.team-title { font-size: 13px; color: var(--ice-dark); margin-top: 2px; }

/* ---------- 案例列表 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.filter-btn {
    padding: 10px 24px; border-radius: 999px; border: 1px solid var(--line); background: #fff;
    color: var(--muted); font-size: 14px; font-weight: 600; cursor: pointer; transition: all .22s;
}
.filter-btn:hover { border-color: var(--ice); color: var(--ice-dark); }
.filter-btn.is-active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(24,198,216,.3); }
.search-form { display: flex; gap: 10px; max-width: 460px; margin: 0 auto 46px; }
.search-input {
    flex: 1; padding: 12px 20px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px;
    outline: none; font-family: inherit; transition: border .2s, box-shadow .2s;
}
.search-input:focus { border-color: var(--ice); box-shadow: 0 0 0 3px rgba(24,198,216,.15); }
.cases-empty { text-align: center; padding: 60px 0; color: var(--muted); }

/* ---------- 案例详情 ---------- */
.detail-gallery { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 20px; }
.gallery-main { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.gallery-main img { width: 100%; max-height: 520px; object-fit: cover; cursor: zoom-in; }
.gallery-thumbs { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 4px; }
.gallery-thumb { width: 110px; height: 78px; border-radius: 10px; overflow: hidden; cursor: pointer; flex-shrink: 0; border: 2px solid transparent; transition: border .2s; }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumb.is-active { border-color: var(--ice); }

.detail-layout { display: grid; grid-template-columns: 1.8fr 1fr; gap: 40px; align-items: start; }
.detail-section-title { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 14px; padding-bottom: 10px; position: relative; }
.detail-section-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 3px; background: var(--grad); border-radius: 3px; }
.detail-desc { color: var(--muted); white-space: pre-line; }
.detail-aside { background: var(--bg); border-radius: var(--radius); padding: 28px; position: sticky; top: 100px; }
.detail-meta { display: flex; flex-direction: column; }
.detail-meta-item { display: flex; justify-content: space-between; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.detail-meta-item:last-child { border-bottom: 0; }
.detail-meta-item .k { color: var(--muted); }
.detail-meta-item .v { font-weight: 600; color: var(--navy); text-align: right; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ---------- 资质荣誉 ---------- */
.certs-tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.certs-tab { padding: 10px 22px; border-radius: 999px; border: 1px solid var(--line); background: #fff; color: var(--muted); font-size: 14px; font-weight: 600; cursor: pointer; transition: all .22s; }
.certs-tab:hover { border-color: var(--ice); color: var(--ice-dark); }
.certs-tab.is-active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(24,198,216,.3); }
.certs-group { margin-bottom: 54px; }
.certs-group:last-child { margin-bottom: 0; }
.certs-group-title { font-size: 22px; font-weight: 800; color: var(--navy); margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.certs-group-title::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.certs-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s; cursor: zoom-in; }
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.cert-img { aspect-ratio: 3 / 4; overflow: hidden; background: var(--bg-alt); position: relative; }
.cert-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.cert-card:hover .cert-img img { transform: scale(1.05); }
.cert-img .cert-view {
    position: absolute; inset: 0; background: rgba(10,30,46,.5); color: #fff; display: flex;
    align-items: center; justify-content: center; gap: 6px; font-size: 13px; font-weight: 600; opacity: 0; transition: opacity .3s;
}
.cert-img .cert-view svg { width: 16px; height: 16px; }
.cert-card:hover .cert-view { opacity: 1; }
.cert-info { padding: 14px 16px 16px; }
.cert-name { font-size: 14.5px; font-weight: 700; color: var(--navy); line-height: 1.4; }
.cert-issuer { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 40px; align-items: start; }
.home-contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.home-contact-grid .info-card { margin-bottom: 0; height: 100%; }
.info-card {
    display: flex; gap: 18px; align-items: flex-start; background: #fff; border: 1px solid var(--line);
    border-radius: var(--radius); padding: 24px; margin-bottom: 18px; transition: all .25s;
}
.info-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.info-icon { width: 50px; height: 50px; border-radius: 12px; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.info-icon svg { width: 24px; height: 24px; }
.info-body .info-label { font-size: 13px; color: var(--muted); margin-bottom: 3px; }
.info-body .info-value { font-size: 16px; font-weight: 700; color: var(--navy); }

.contact-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-title { font-size: 22px; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
.form-sub { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 7px; }
.form-input, .form-textarea {
    width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px;
    font-family: inherit; outline: none; transition: border .2s, box-shadow .2s; background: var(--bg);
}
.form-input:focus, .form-textarea:focus { border-color: var(--ice); box-shadow: 0 0 0 3px rgba(24,198,216,.15); background: #fff; }
.form-textarea { resize: vertical; min-height: 130px; }
.form-hint { font-size: 13px; color: var(--muted); margin-top: 14px; }

.map-wrap { margin-top: 60px; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--line); }
.map-frame { width: 100%; height: 420px; border: 0; display: block; }
.map-fallback {
    display: flex; align-items: center; gap: 20px; min-height: 200px;
    background: linear-gradient(135deg, #eaf4fb 0%, #dcf0f8 100%);
    border: 1px dashed rgba(15, 159, 176, .5); border-radius: var(--radius-lg);
    padding: 36px; text-decoration: none; color: var(--navy); transition: box-shadow .25s;
}
.map-fallback:hover { box-shadow: var(--shadow-md); }
.map-fallback-icon {
    width: 58px; height: 58px; border-radius: 50%; background: var(--grad); color: #fff;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.map-fallback-icon svg { width: 28px; height: 28px; }
.map-fallback-body { display: flex; flex-direction: column; gap: 5px; }
.map-fallback-body strong { font-size: 18px; color: var(--navy); }
.map-fallback-body span { color: var(--muted); font-size: 14px; }
.map-fallback-cta { margin-left: auto; font-size: 14px; font-weight: 700; color: var(--ice-dark); white-space: nowrap; }
.map-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
@media (max-width: 600px) {
    .map-fallback { flex-direction: column; text-align: center; padding: 28px 20px; }
    .map-fallback-cta { margin-left: 0; }
}

/* ---------- 灯箱 ---------- */
.lightbox {
    position: fixed; inset: 0; z-index: 100; background: rgba(8, 20, 30, .94); display: flex;
    align-items: center; justify-content: center; flex-direction: column; opacity: 0; visibility: hidden; transition: all .3s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox img { max-width: 88vw; max-height: 80vh; border-radius: 8px; box-shadow: var(--shadow-lg); }
.lightbox-caption { color: #fff; margin-top: 16px; font-size: 15px; }
.lightbox-close {
    position: absolute; top: 24px; right: 28px; width: 46px; height: 46px; border-radius: 50%;
    background: rgba(255,255,255,.12); color: #fff; border: 0; font-size: 24px; cursor: pointer; line-height: 1;
    display: flex; align-items: center; justify-content: center;
}
.lightbox-close:hover { background: rgba(255,255,255,.25); }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }

/* ---------- 浮动：联系我们 + 回到顶部 ---------- */
.call-fab {
    position: fixed; left: 50%; bottom: 24px; z-index: 90;
    transform: translateX(-50%);
    display: flex; align-items: center; gap: 12px;
    background: var(--grad); color: #fff; padding: 12px 22px 12px 13px;
    border-radius: 999px; box-shadow: var(--shadow-lg);
    transition: transform .25s ease;
}
.call-fab:hover { transform: translateX(-50%) translateY(-3px); }
.call-fab-icon {
    width: 44px; height: 44px; border-radius: 50%; background: rgba(255, 255, 255, .18);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.call-fab-icon svg { width: 22px; height: 22px; }
.call-fab-text { display: flex; flex-direction: column; line-height: 1.25; align-items: center; text-align: center; }
.call-fab-num { font-size: 21px; font-weight: 800; letter-spacing: .5px; }

.back-top {
    position: fixed; right: 24px; bottom: 24px; z-index: 90;
    width: 50px; height: 50px; border-radius: 50%;
    background: #fff; color: var(--navy); border: 1px solid var(--line);
    box-shadow: var(--shadow-md); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: transform .25s ease, background .25s ease, color .25s ease;
}
.back-top:hover { transform: translateY(-3px); background: var(--ice); color: #fff; border-color: transparent; }
.back-top svg { width: 22px; height: 22px; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
    .header-inner { height: 66px; }
    .main-nav {
        position: fixed; top: 0; right: 0; bottom: 0; width: min(320px, 84vw); background: #fff;
        flex-direction: column; align-items: flex-start; padding: 90px 30px 30px; gap: 20px;
        box-shadow: -20px 0 60px rgba(10,30,46,.2); transform: translateX(100%); transition: transform .3s ease; z-index: 55;
    }
    .main-nav.is-open { transform: translateX(0); }
    .nav-list { flex-direction: column; align-items: flex-start; width: 100%; gap: 6px; }
    .nav-item a { font-size: 17px; padding: 10px 4px; }
    .nav-cta { width: 100%; }
    .nav-toggle { display: flex; z-index: 56; }
    .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
    .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .about-preview, .story-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-media .media-main img { height: 320px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    .detail-layout { grid-template-columns: 1fr; }
    .detail-aside { position: static; }
    .contact-grid { grid-template-columns: 1fr; }
    .home-contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 600px) {
    .section { padding: 62px 0; }
    .topbar-left .topbar-item--muted { display: none; }
    .hero { min-height: 500px; }
    .hero-arrow { display: none; }
    .hero-actions .btn { width: 100%; }
    .features-grid, .cases-grid, .related-grid, .team-grid, .certs-grid { grid-template-columns: 1fr; }
    .service-card { padding: 24px 16px; }
    .service-icon { width: 46px; height: 46px; }
    .service-icon svg { width: 23px; height: 23px; }
    .service-title { font-size: 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
    .stat-num { font-size: 30px; }
    .about-media .media-badge { left: 12px; }
    .footer-grid { grid-template-columns: 1fr; }
    .cta-inner { flex-direction: column; text-align: center; }
    .contact-form { padding: 26px 20px; }
    .filter-bar { gap: 8px; }
    .filter-btn { padding: 8px 16px; font-size: 13px; }
    .gallery-thumb { width: 86px; height: 62px; }
    .call-fab { left: 12px; right: 12px; bottom: 0; border-radius: 0; justify-content: center; padding: 11px 16px; transform: none; }
    .back-top { right: 16px; bottom: 76px; }
    .site-footer { padding-bottom: 78px; }
}