/* ============ 基础 ============ */
:root {
  --navy: #0b2340;
  --navy-2: #102f52;
  --blue: #0e7cc2;
  --blue-light: #35a8e0;
  --cyan: #29b6d8;
  --accent: #f5a623;
  --bg: #ffffff;
  --bg-soft: #f4f8fb;
  --text: #22313f;
  --muted: #5c6b7a;
  --border: #e2eaf1;
  --shadow: 0 10px 30px rgba(11, 35, 64, .10);
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.7; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
.container { width: min(1180px, 92%); margin: 0 auto; }

h2 { font-size: clamp(26px, 3.4vw, 38px); color: var(--navy); line-height: 1.25; }
h3 { color: var(--navy); }
.eyebrow { color: var(--blue); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; font-size: 13px; margin-bottom: 10px; }
.eyebrow.light { color: var(--cyan); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 54px; }
.section-desc { color: var(--muted); margin-top: 14px; }

/* ============ 按钮 ============ */
.btn { display: inline-block; padding: 13px 30px; border-radius: 999px; font-weight: 600; font-size: 15px; transition: .25s; border: 2px solid transparent; cursor: pointer; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--navy); transform: translateY(-2px); }
.btn-outline { border-color: rgba(255,255,255,.65); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-accent { background: var(--accent); color: #1c1c1c; }
.btn-accent:hover { filter: brightness(1.08); transform: translateY(-2px); }
.btn-sm { padding: 9px 22px; font-size: 14px; }
.btn-block { width: 100%; }

/* ============ 顶栏 ============ */
.topbar { background: var(--navy); color: #cfe3f3; font-size: 13px; }
.topbar-inner { display: flex; gap: 26px; padding: 7px 0; }
.topbar-item.lang { margin-left: auto; letter-spacing: .1em; }

/* ============ 导航 ============ */
.navbar { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); transition: box-shadow .25s; }
.navbar.scrolled { box-shadow: var(--shadow); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { flex: none; width: 62px; background: transparent; }
.brand-mark img { display: block; width: 100%; height: auto; }
.brand-text strong { display: block; color: var(--navy); font-size: 17px; line-height: 1.25; }
.brand-text span { font-size: 10.5px; color: var(--muted); letter-spacing: .04em; }
.nav-links { display: flex; align-items: center; gap: 30px; font-weight: 500; flex-wrap: nowrap; }
.nav-links a:not(.btn) { color: var(--text); position: relative; padding: 6px 0; white-space: nowrap; }
.nav-links .btn { white-space: nowrap; }
.nav-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--navy); cursor: pointer; }

/* ============ Hero ============ */
.hero { position: relative; background: linear-gradient(120deg, var(--navy) 0%, var(--navy-2) 55%, #12457a 100%); color: #fff; overflow: hidden; }
.hero-water { position: absolute; inset: 0; background:
  radial-gradient(900px 420px at 85% -10%, rgba(41,182,216,.35), transparent 60%),
  radial-gradient(700px 380px at 10% 110%, rgba(14,124,194,.4), transparent 60%),
  repeating-linear-gradient(115deg, rgba(255,255,255,.03) 0 2px, transparent 2px 90px);
}
.hero-inner { position: relative; padding: 110px 0 130px; max-width: 860px; }
.hero-eyebrow { color: var(--cyan); font-weight: 600; letter-spacing: .08em; margin-bottom: 18px; font-size: 14px; }
.hero h1 { font-size: clamp(34px, 5.4vw, 60px); line-height: 1.18; margin-bottom: 22px; }
.hero-sub { color: #c9d9e8; font-size: 17px; max-width: 680px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ============ 数据区 ============ */
.stats { padding: 90px 0 70px; background: var(--bg-soft); }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 70px; }
.stat-card { background: #fff; border-radius: var(--radius); padding: 34px 20px; text-align: center; box-shadow: var(--shadow); border-top: 4px solid var(--blue); }
.stat-num, .stat-unit { display: inline; font-size: 44px; font-weight: 800; color: var(--blue); line-height: 1; }
.stat-unit { font-size: 22px; color: var(--cyan); margin-left: 2px; }
.stat-card p { color: var(--muted); margin-top: 10px; font-size: 14.5px; }
.about-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; align-items: center; }
.about-text h3 { font-size: 25px; margin-bottom: 16px; }
.about-text p { color: var(--muted); margin-bottom: 18px; }
.check-list { list-style: none; }
.check-list li { padding: 7px 0 7px 30px; position: relative; }
.check-list li::before { content: "✔"; position: absolute; left: 0; color: var(--blue); font-weight: 700; }
.check-list.light li::before { color: var(--cyan); }
.check-list.light li { color: #dbe8f4; }

/* ============ 图片占位 ============ */
.about-img, .aftermarket-img { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 300px; background: linear-gradient(135deg, #d7e7f3, #eef6fb); }
.product-img { position: relative; height: 210px; overflow: hidden; background: linear-gradient(135deg, #d7e7f3, #eef6fb); }
.about-img img, .aftermarket-img img, .product-img img { width: 100%; height: 100%; object-fit: cover; }
.img-missing { display: none !important; }
.img-fallback { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; color: #7d97ad; font-size: 15px; font-weight: 600; line-height: 1.9; }
.img-fallback small { font-weight: 400; color: #9ab2c5; }

/* ============ 产品 ============ */
.products { padding: 90px 0; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: .3s; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.product-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.product-tag { align-self: flex-start; background: rgba(14,124,194,.1); color: var(--blue); font-weight: 700; font-size: 12px; letter-spacing: .08em; padding: 4px 12px; border-radius: 999px; margin-bottom: 12px; }
.product-body h3 { font-size: 20px; margin-bottom: 10px; }
.product-body p { color: var(--muted); font-size: 14.5px; flex: 1; }
.more { color: var(--blue); font-weight: 600; margin-top: 16px; font-size: 14px; }

/* ============ 服务 ============ */
.services { padding: 90px 0; background: var(--bg-soft); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: #fff; border-radius: var(--radius); padding: 34px 28px; box-shadow: 0 4px 18px rgba(11,35,64,.06); transition: .3s; }
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.service-icon { font-size: 34px; margin-bottom: 14px; }
.service-card h4 { color: var(--navy); font-size: 18px; margin-bottom: 10px; }
.service-card p { color: var(--muted); font-size: 14.5px; }

/* ============ 备品备件 ============ */
.spare { padding: 90px 0; }
.spare-inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.spare-text h2 { margin-bottom: 16px; }
.spare-text p { color: var(--muted); margin-bottom: 26px; }
.spare-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.spare-gallery .pump-photo { aspect-ratio: 3 / 4; }

/* ============ 售后 ============ */
.aftermarket { padding: 90px 0; background: linear-gradient(120deg, var(--navy), var(--navy-2)); color: #fff; }
.aftermarket-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.aftermarket h2 { color: #fff; margin-bottom: 16px; }
.aftermarket p { color: #c9d9e8; margin-bottom: 14px; }
.aftermarket .check-list { margin-bottom: 28px; }
.aftermarket-img { min-height: 340px; background: rgba(255,255,255,.08); }
.aftermarket-img .img-fallback { color: #9db8cf; background: rgba(11,35,64,.4); }

/* ============ 联系 ============ */
.contact { padding: 90px 0; background: var(--bg-soft); }
.contact-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact-info h2 { margin-bottom: 14px; }
.contact-info > p { color: var(--muted); margin-bottom: 24px; }
.contact-list { list-style: none; }
.contact-list li { padding: 10px 0; border-bottom: 1px dashed var(--border); color: var(--text); }
.contact-list .en { color: var(--muted); font-size: 13px; }
.contact-form { background: #fff; border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input, .contact-form textarea { width: 100%; padding: 13px 16px; border: 1px solid var(--border); border-radius: 10px; font-size: 14.5px; font-family: inherit; outline: none; transition: .2s; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(14,124,194,.12); }
.form-tip { text-align: center; color: var(--blue); font-size: 14px; min-height: 20px; }

/* ============ 页脚 ============ */
.footer { background: var(--navy); color: #b9cddd; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding: 44px 0 30px; flex-wrap: wrap; }
.footer-brand { display: flex; gap: 14px; align-items: center; }
.footer-brand strong { color: #fff; display: block; }
.footer-brand p { font-size: 13px; }
.footer-links { display: flex; gap: 24px; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); text-align: center; padding: 18px 0; font-size: 13px; color: #8fa9bf; }

/* ============ 产品详情页 ============ */
.p-hero { background: linear-gradient(120deg, var(--navy), var(--navy-2)); color: #fff; padding: 70px 0 60px; }
.p-hero .eyebrow { color: var(--cyan); }
.p-hero h1 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 14px; }
.p-hero p { color: #c9d9e8; max-width: 720px; font-size: 16px; }
.p-breadcrumb { font-size: 13px; color: #9db8cf; margin-bottom: 18px; }
.p-breadcrumb a:hover { color: #fff; }
.p-section { padding: 70px 0; }
.p-section.alt { background: var(--bg-soft); }
.p-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.p-img { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 320px; background: linear-gradient(135deg, #d7e7f3, #eef6fb); }
.p-img img { width: 100%; height: 100%; object-fit: cover; }
.repair-gallery { display: flex; flex-direction: column; gap: 16px; background: none; overflow: visible; }
.repair-photo { position: relative; margin: 0; border-radius: var(--radius); overflow: hidden; background: linear-gradient(135deg, #d7e7f3, #eef6fb); border: 1px solid var(--border); box-shadow: 0 6px 22px rgba(11,35,64,.08); }
.repair-photo img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .4s; }
.repair-photo:hover img { transform: scale(1.03); }
.repair-photo figcaption { padding: 12px 16px; font-size: 13.5px; color: var(--muted); background: #fff; border-top: 1px solid var(--border); }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 30px; }
.feature-item { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 22px 22px; font-size: 14.5px; }
.feature-item strong { display: block; color: var(--navy); margin-bottom: 6px; font-size: 15.5px; }
.feature-item p { color: var(--muted); }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 34px; }
.adv-item { background: #fff; border-radius: 12px; padding: 24px; box-shadow: 0 4px 16px rgba(11,35,64,.06); text-align: center; }
.adv-item .adv-ico { font-size: 28px; margin-bottom: 10px; }
.adv-item p { color: var(--muted); font-size: 14px; }
.adv-item strong { color: var(--navy); display: block; margin-bottom: 4px; }
.p-cta { background: linear-gradient(120deg, var(--blue), var(--cyan)); color: #fff; text-align: center; padding: 64px 0; }.p-cta h2 { color: #fff; margin-bottom: 12px; }
.p-cta p { margin-bottom: 26px; opacity: .92; }
.p-cta .btn-primary { background: #fff; color: var(--blue); }
.p-cta .btn-primary:hover { background: var(--navy); color: #fff; }

/* ============ 泵站图集 ============ */
.pump-group { margin-bottom: 56px; }
.pump-group:last-child { margin-bottom: 0; }
.pump-group-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; border-left: 4px solid var(--blue); padding-left: 16px; margin-bottom: 20px; }
.pump-group-head h3 { font-size: 22px; }
.pump-group-head span { color: var(--muted); font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase; }
.pump-group-head p { flex-basis: 100%; color: var(--muted); font-size: 14.5px; margin: 0; }
.pump-gallery { display: grid; grid-template-columns: 1fr; gap: 18px; }
.pump-photo { position: relative; aspect-ratio: 3 / 2; max-width: 880px; border-radius: 12px; overflow: hidden; margin: 0; background: linear-gradient(135deg, #d7e7f3, #eef6fb); border: 1px solid var(--border); box-shadow: 0 6px 22px rgba(11,35,64,.08); }
.pump-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.pump-photo:hover img { transform: scale(1.04); }
.pump-photo .img-fallback { font-size: 13.5px; line-height: 1.8; }
.pump-photo .img-fallback small { font-size: 11px; }

/* ============ 两大业务板块 ============ */
.biz { padding: 84px 0; background: #fff; }
.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.biz-card { position: relative; display: block; border-radius: 18px; padding: 42px 38px; min-height: 300px; color: #fff; background: linear-gradient(140deg, #0b2340 0%, #12457a 100%); transition: .3s; overflow: hidden; }
.biz-card::after { content: ""; position: absolute; right: -60px; bottom: -60px; width: 240px; height: 240px; border-radius: 50%; background: radial-gradient(circle, rgba(41,182,216,.35), transparent 70%); }
.biz-card.alt { background: linear-gradient(140deg, #0e7cc2 0%, #29b6d8 100%); }
.biz-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(11,35,64,.22); }
.biz-tag { display: inline-block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; background: rgba(255,255,255,.18); padding: 5px 13px; border-radius: 999px; margin-bottom: 18px; }
.biz-card h3 { color: #fff; font-size: clamp(21px, 2.4vw, 26px); margin-bottom: 12px; position: relative; z-index: 1; }
.biz-card p { color: rgba(255,255,255,.86); font-size: 15px; margin-bottom: 24px; max-width: 430px; position: relative; z-index: 1; }
.biz-more { font-weight: 600; font-size: 14.5px; position: relative; z-index: 1; }

/* ============ 服务流程 ============ */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 36px; }
.flow-step { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 22px 16px; text-align: center; }
.flow-step .num { width: 34px; height: 34px; border-radius: 50%; background: rgba(14,124,194,.1); color: var(--blue); display: grid; place-items: center; font-weight: 700; margin: 0 auto 12px; }
.flow-step strong { display: block; color: var(--navy); margin-bottom: 6px; font-size: 15px; }
.flow-step p { color: var(--muted); font-size: 13px; line-height: 1.65; }

/* ============ 设备清单标签 ============ */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.chip { background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 9px 18px; font-size: 14px; color: var(--navy); }

/* ============ COMPACT TOOL KIT ============ */
.kit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 30px; }
.kit-card { position: relative; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px 22px; box-shadow: 0 4px 16px rgba(11,35,64,.05); transition: transform .25s, box-shadow .25s; }
.kit-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(11,35,64,.10); }
.kit-card h3 { font-size: 17px; margin: 6px 0 2px; color: var(--navy); }
.kit-card .kit-en { font-size: 12.5px; color: var(--cyan); font-weight: 600; letter-spacing: .04em; margin-bottom: 10px; }
.kit-card p:not(.kit-en) { font-size: 14px; color: var(--muted); line-height: 1.8; }
.kit-num { position: absolute; top: 20px; right: 20px; background: linear-gradient(120deg, var(--blue), var(--cyan)); color: #fff; font-size: 12.5px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.kit-photo { margin: 0 0 26px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); box-shadow: 0 6px 22px rgba(11,35,64,.08); background: #fff; }
.kit-photo img { display: block; width: 100%; height: auto; }
.kit-photo figcaption { padding: 12px 18px; font-size: 13.5px; color: var(--muted); background: #fff; border-top: 1px solid var(--border); text-align: center; }
.kit-banner { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 28px 32px; }
.kit-banner strong { font-size: 18px; display: block; margin-bottom: 8px; }
.kit-banner p { color: #c9d9e8; font-size: 14.5px; line-height: 1.9; margin: 0; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .stats-grid, .product-grid, .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .aftermarket-inner, .contact-inner, .p-layout, .spare-inner { grid-template-columns: 1fr; gap: 36px; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .kit-grid { grid-template-columns: repeat(2, 1fr); }
  .pump-gallery { grid-template-columns: repeat(2, 1fr); }
  .nav-links { position: fixed; top: 76px; right: 0; width: min(320px, 80vw); background: #fff; flex-direction: column; align-items: flex-start; padding: 26px 28px; gap: 18px; box-shadow: var(--shadow); border-radius: 0 0 0 14px; transform: translateX(110%); transition: .3s; }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: block; }
}
@media (max-width: 600px) {
  .stats-grid, .product-grid, .services-grid, .form-row, .feature-grid, .adv-grid, .pump-gallery, .kit-grid { grid-template-columns: 1fr; }
  .hero-inner { padding: 80px 0 90px; }
  .topbar-inner { gap: 14px; flex-wrap: wrap; }
}

/* ============ 语言切换 ============ */
.lang-switch { font-weight: 700; font-size: 13.5px; color: var(--navy); border: 1.5px solid var(--blue); padding: 5px 14px; border-radius: 999px; letter-spacing: .04em; flex: none; }
.lang-switch:hover { background: var(--blue); color: #fff; }

/* ============ 价值主张四条 ============ */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 30px; }
.value-item { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 22px; }
.value-item strong { display: block; font-size: 16px; color: var(--navy); margin-bottom: 8px; }
.value-item strong::before { content: ""; display: inline-block; width: 18px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--blue), var(--cyan)); vertical-align: middle; margin-right: 9px; }
.value-item p { font-size: 13.5px; color: var(--muted); line-height: 1.85; margin: 0; }
@media (max-width: 960px) { .value-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .value-grid { grid-template-columns: 1fr; } }

/* ===== Turn-Up System page ===== */
.tu-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 30px; }
.tu-duo figure { margin: 0; position: relative; }
.tu-duo img { width: 100%; display: block; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.tu-duo figcaption { color: var(--muted); font-size: 13px; margin-top: 10px; text-align: center; line-height: 1.6; }
.comp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.comp-card { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; position: relative; }
.comp-card img { width: 100%; height: 190px; object-fit: cover; display: block; }
.comp-body { padding: 16px 18px 20px; }
.comp-body h4 { margin: 0 0 6px; font-size: 16px; }
.comp-body p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.adv-list { display: grid; gap: 12px; }
.adv-row { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; font-weight: 600; }
@media (max-width: 960px) { .comp-grid { grid-template-columns: repeat(2, 1fr); } .tu-duo { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .comp-grid { grid-template-columns: 1fr; } }

/* ===== 案例分享 Case Studies ===== */
.case-wrap { display: grid; grid-template-columns: 1fr 320px; gap: 44px; align-items: start; }
.case-head-tag { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(120deg, var(--blue), var(--cyan)); color: #fff; font-size: 12.5px; font-weight: 700; letter-spacing: .1em; padding: 5px 14px; border-radius: 999px; margin-bottom: 14px; }
.case-main h2 { font-size: clamp(23px, 2.7vw, 30px); margin-bottom: 14px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 4px; }
.case-tag { background: rgba(14,124,194,.1); color: var(--blue); font-size: 12.5px; font-weight: 700; padding: 5px 12px; border-radius: 999px; }
.case-block { margin-top: 34px; }
.case-block h3 { font-size: 19px; margin-bottom: 12px; padding-left: 13px; border-left: 4px solid var(--blue); line-height: 1.35; }
.case-block p { color: var(--muted); font-size: 14.5px; line-height: 1.95; }
.case-block p + p { margin-top: 10px; }
.case-block ul.check-list { margin-top: 14px; }
.case-block ul.check-list li { font-size: 14.5px; }
.case-steps { display: grid; gap: 14px; margin-top: 18px; }
.case-step { background: var(--bg-soft); border: 1px solid var(--border); border-left: 4px solid var(--cyan); border-radius: 12px; padding: 16px 20px; }
.case-step strong { display: block; color: var(--navy); font-size: 15px; margin-bottom: 5px; }
.case-step p { margin: 0; font-size: 14px; line-height: 1.8; }
.case-results { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
.case-result { background: #fff; border: 1px solid var(--border); border-top: 4px solid var(--blue); border-radius: 12px; padding: 20px; box-shadow: 0 4px 16px rgba(11,35,64,.05); }
.case-result strong { display: block; color: var(--navy); font-size: 15px; margin-bottom: 6px; }
.case-result p { margin: 0; font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.case-side { position: sticky; top: 96px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 6px 24px rgba(11,35,64,.07); padding: 26px 24px; }
.case-side h4 { font-size: 15px; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); margin-bottom: 12px; }
.case-facts { list-style: none; margin: 0; }
.case-facts li { padding: 11px 0; border-bottom: 1px dashed var(--border); font-size: 14px; color: var(--navy); font-weight: 600; }
.case-facts li:last-child { border-bottom: none; }
.case-facts span { display: block; color: var(--muted); font-size: 12px; font-weight: 500; letter-spacing: .06em; margin-bottom: 3px; }
.case-side .btn { margin-top: 18px; width: 100%; text-align: center; }
.case-note { margin-top: 12px; font-size: 12px; color: var(--muted); line-height: 1.7; }
@media (max-width: 960px) {
  .case-wrap { grid-template-columns: 1fr; gap: 34px; }
  .case-side { position: static; }
  .case-results { grid-template-columns: 1fr; }
}

/* ===== 首页案例预告 ===== */
.case-teaser { padding: 84px 0; background: var(--bg-soft); }
.case-teaser-card { display: grid; grid-template-columns: 1fr 260px; gap: 34px; align-items: center; background: #fff; border: 1px solid var(--border); border-left: 6px solid var(--blue); border-radius: var(--radius); padding: 36px 38px; box-shadow: 0 6px 24px rgba(11,35,64,.07); margin-top: 8px; }
.case-teaser-card h3 { font-size: clamp(19px, 2.2vw, 24px); margin: 10px 0 10px; }
.case-teaser-card p { color: var(--muted); font-size: 14.5px; line-height: 1.9; }
.case-teaser-tag { display: inline-block; background: rgba(41,182,216,.14); color: #0a6f8c; font-size: 12px; font-weight: 700; letter-spacing: .1em; padding: 4px 12px; border-radius: 999px; }
.case-teaser-side { border-left: 1px solid var(--border); padding-left: 28px; }
.case-teaser-side ul { list-style: none; margin: 0 0 18px; }
.case-teaser-side li { font-size: 13.5px; color: var(--navy); font-weight: 600; padding: 7px 0; }
.case-teaser-side li::before { content: "✔"; color: var(--cyan); font-weight: 700; margin-right: 8px; }
@media (max-width: 960px) { .case-teaser-card { grid-template-columns: 1fr; gap: 22px; } .case-teaser-side { border-left: none; border-top: 1px solid var(--border); padding-left: 0; padding-top: 20px; } }
.case-side .btn-outline { border: 1.5px solid var(--blue); color: var(--blue); }
.case-side .btn-outline:hover { background: var(--blue); color: #fff; }

/* ===== 案例关键数据 ===== */
.case-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
.case-kpi { background: linear-gradient(140deg, #0b2340, #12457a); color: #fff; border-radius: var(--radius); padding: 24px 22px; }
.case-kpi .kpi-num { display: block; font-size: 30px; font-weight: 800; line-height: 1.1; color: #fff; }
.case-kpi .kpi-num em { font-style: normal; font-size: 17px; font-weight: 700; color: var(--cyan); margin-left: 2px; }
.case-kpi span { display: block; margin-top: 8px; font-size: 13px; color: rgba(255,255,255,.75); line-height: 1.6; }
@media (max-width: 600px) { .case-kpis { grid-template-columns: 1fr; } }

/* ===== 导航防挤压 ===== */
.brand { flex: none; }
.brand-text strong { white-space: nowrap; }
@media (max-width: 1360px) {
  .nav-links { gap: 20px; }
}

/* ===== 备件推荐：真空辊密封条 ===== */
.spare-product { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; margin-top: 72px; }
.spare-product-img { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); box-shadow: 0 6px 24px rgba(11,35,64,.08); background: #fff; }
.spare-product-img img { display: block; width: 100%; height: auto; }
.spare-product-img figcaption { padding: 12px 18px; font-size: 13px; color: var(--muted); background: #fff; border-top: 1px solid var(--border); text-align: center; }
.spare-product-info h3 { font-size: clamp(21px, 2.4vw, 27px); margin: 12px 0 4px; }
.spare-product-info .mat { color: var(--blue); font-weight: 700; font-size: 14px; letter-spacing: .06em; margin-bottom: 14px; }
.spare-product-info > p { color: var(--muted); font-size: 14.5px; line-height: 1.9; }
.spare-product-info .check-list { margin-top: 18px; }
.spare-product-info .check-list li { font-size: 14.5px; }
@media (max-width: 960px) { .spare-product { grid-template-columns: 1fr; gap: 30px; } }
.spare-product.reverse { margin-top: 56px; }
.spare-product.reverse .spare-product-img { order: 2; }
.spare-product.reverse .spare-product-info { order: 1; }
@media (max-width: 960px) { .spare-product.reverse .spare-product-img { order: 0; } }

/* ===== 备件推荐：充气密封 ===== */
.spare-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.spare-gallery figure { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.spare-gallery img { display: block; width: 100%; height: 200px; object-fit: contain; background: #fff; }
.spare-gallery figcaption { padding: 10px 14px; font-size: 12.5px; color: var(--muted); border-top: 1px solid var(--border); text-align: center; }
@media (max-width: 600px) { .spare-gallery { grid-template-columns: 1fr; } }