/* ============================================
   productdetail.css - 产品详情页专用样式
   对应页面：product_detail.html
   ============================================ */

/* ===== 页面顶部横幅（page-hero） ===== */
.page-hero {
  position:relative; padding:180px 0 120px;
  background:linear-gradient(135deg,#151E2D 0%,#1e3a5f 50%,#1a4a7a 100%);
  color:#fff; overflow:hidden;
}
.page-hero::before {
  content:''; position:absolute; inset:0;
  background:url('/images/hero-banner.svg') center/cover no-repeat;
  opacity:.08; z-index:0; pointer-events:none;
}
.page-hero::after {
  content:''; position:absolute; top:-40%; right:-10%;
  width:600px; height:600px;
  background:radial-gradient(circle,rgba(37,99,235,.12) 0%,transparent 70%);
  border-radius:50%; z-index:0; pointer-events:none;
}
.page-hero .hero-inner { position:relative; z-index:2; text-align:center; }
.page-hero.hero-has-bg::after {
  content:''; position:absolute; inset:0;
  width:auto; height:auto; top:0; right:0;
  border-radius:0;
  background:linear-gradient(135deg,rgba(15,23,42,.85) 0%,rgba(15,23,42,.7) 50%,rgba(15,23,42,.5) 100%);
  z-index:1;
}
.page-hero .hero-breadcrumb { font-size:13px; color:rgba(255,255,255,.55); margin-bottom:12px; }
.page-hero .hero-breadcrumb a { color:rgba(255,255,255,.7); }
.page-hero .hero-breadcrumb a:hover { color:#fff; }
.page-hero h1 {
  font-size:clamp(1.8rem,3vw,2.6rem); font-weight:800;
  margin-bottom:12px; line-height:1.2;
}
.page-hero p {
  font-size:clamp(.95rem,1.3vw,1.05rem);
  color:rgba(255,255,255,.7); max-width:800px; margin:0 auto;
  line-height:1.7;
}
@media(max-width:768px) {
  .page-hero { padding:110px 0 50px; }
}

/* ===== 文本内容区 ===== */
.content-body {
  font-size:1rem; line-height:2; color:var(--text);
}
.content-body p { margin-bottom:18px; }
.content-body img { max-width:100%; border-radius:var(--radius-lg); margin:24px 0; box-shadow:var(--shadow-md); }
.content-body h2, .content-body h3 { font-weight:700; margin-top:32px; margin-bottom:14px; color:var(--text); }
.content-body h2 { font-size:1.5rem; }
.content-body h3 { font-size:1.2rem; }
.content-body ul, .content-body ol { padding-left:24px; margin-bottom:18px; }
.content-body li { margin-bottom:8px; }
.content-body blockquote {
  border-left:4px solid var(--primary);
  background:var(--bg-gray); padding:16px 20px;
  border-radius:0 var(--radius) var(--radius) 0;
  margin:20px 0; color:var(--text-muted); font-style:italic;
}
.content-body a { color:var(--primary); text-decoration:underline; }

/* ===== 淡入动画 ===== */
.fade-in { opacity:0; transform:translateY(20px); transition:all .6s ease; }
.fade-in.visible { opacity:1; transform:translateY(0); }

/* =============================================
   模块4：产品详情页布局
   左侧图库（放大镜）+ 右侧信息区
   ============================================= */
.product-detail-section { padding-top:20px; }
.product-detail-layout {
  display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:flex-start;
}

/* 左侧图库（等分 + 高度自适应） */
.product-gallery-col {
  position:sticky; top:100px;
  display:flex; flex-direction:row; gap:12px; align-items:flex-start;
}
.gallery-main-area { flex:1; min-width:0; position:relative; }
.product-main-image {
  position:relative; width:100%;
  /* 高度 ≈ 视口高度减去 header/间距 自适应为正方形比例 */
  height:0; padding-bottom:100%; overflow:hidden;
  border-radius:var(--radius-lg); border:1px solid var(--border);
  background:#f8f9fa; cursor:crosshair;
}
.product-main-image img {
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:contain; display:block;
}

/* 放大镜 */
.zoom-lens {
  display:none; position:absolute; width:180px; height:180px;
  border:2px solid var(--primary); background:rgba(37,99,235,.1);
  pointer-events:none; z-index:2;
}
.zoom-result {
  display:none; position:absolute; left:calc(100% + 20px); top:0;
  width:480px; height:480px; overflow:hidden; z-index:10;
  border:2px solid var(--border); border-radius:var(--radius-lg);
  background:#fff; box-shadow:var(--shadow-xl);
}
.zoom-result img { position:absolute; max-width:none; max-height:none; }

/* 右侧缩略图（与主图等高，超出滚动） */
.thumbnails-wrapper {
  position:relative; flex-shrink:0; width:80px;
  display:flex; flex-direction:column; align-items:center;
  align-self:stretch;
}
.thumb-scroll-btn {
  flex-shrink:0; width:80px; height:28px;
  display:flex; align-items:center; justify-content:center;
  border:1px solid var(--border); border-radius:6px;
  background:var(--bg-white); color:var(--text-muted); cursor:pointer;
  transition:all .2s; z-index:2;
}
.thumb-scroll-btn:hover { background:var(--bg-alt); color:var(--text); border-color:var(--primary-light); }
.product-thumbnails {
  flex:1; overflow:hidden; position:relative;
  width:100%; min-height:0;
}
.thumb-scroll-inner {
  display:flex; flex-direction:column; gap:8px;
  position:absolute; inset:0;
  overflow-y:auto; scrollbar-width:none;
  padding:4px 0;
}
.thumb-scroll-inner::-webkit-scrollbar { display:none; }
.thumb-item {
  flex-shrink:0; width:72px; height:72px; border-radius:8px; overflow:hidden;
  border:2px solid var(--border); cursor:pointer; transition:all .2s;
  background:#f8f9fa; margin:0 auto;
}
.thumb-item:hover { border-color:var(--primary-light); }
.thumb-item.active { border-color:var(--primary); box-shadow:0 0 0 2px rgba(37,99,235,.2); }
.thumb-item img { width:100%; height:100%; object-fit:cover; display:block; }

/* 右侧信息 */
.product-info-col { min-width:0; }
.product-detail-title { font-size:1.8rem; font-weight:800; line-height:1.3; margin-bottom:8px; color:var(--text); }
.product-detail-subtitle { font-size:1.05rem; color:var(--text-muted); margin-bottom:14px; line-height:1.6; }

/* 产品标签（按钮形式） */
.product-tags { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:16px; }
.product-tag {
  display:inline-block; padding:5px 14px; font-size:.82rem; font-weight:600;
  background:var(--primary); color:#fff;
  border-radius:50px; transition:all .2s;
}
.product-tag:hover { background:var(--primary-dark); }

.product-price-row { display:flex; align-items:baseline; gap:8px; margin-bottom:16px; }
.price-label { font-size:.95rem; color:var(--text-muted); }
.price-value { font-size:1.5rem; font-weight:800; color:#e53e3e; }
.product-summary { margin-bottom:20px; padding:16px 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.product-summary p { font-size:.95rem; line-height:1.8; color:#555555; margin:0; }

/* 参数表 */
.product-specs { margin-bottom:20px; }
.specs-table { width:100%; border-collapse:collapse; }
.specs-table tr { border-bottom:1px solid var(--border); }
.specs-table tr:last-child { border-bottom:none; }
.specs-table td { padding:10px 8px; font-size:.9rem; line-height:1.6; }
.spec-key { color:var(--text-muted); font-weight:500; width:50px; background:var(--bg-gray); border-radius:4px 0 0 4px; }
.spec-value { color:var(--text); }

/* 操作按钮 */
.product-actions { display:flex; gap:14px; margin-bottom:16px; margin-top:15px; }
.btn-action {
  display:inline-flex; align-items:center; gap:8px;
  padding:0 28px; height:35px; border-radius:var(--radius); font-size:1rem; font-weight:600;
  border:none; cursor:pointer; text-decoration:none;
  white-space:nowrap; flex-shrink:0;
  transition:all .25s ease;
}
.btn-wechat { background:#07c160; color:#fff; }
.btn-wechat:hover { background:#06ad56; transform:translateY(-1px); box-shadow:0 4px 14px rgba(7,193,96,.35); }
.btn-phone { background:var(--primary); color:#fff; }
.btn-phone:hover { background:var(--primary-dark); color:#fff; transform:translateY(-1px); box-shadow:0 4px 14px rgba(37,99,235,.35); }

/* 元信息 */
.product-meta-info { display:flex; gap:20px; flex-wrap:wrap; padding:12px 0; font-size:.85rem; color:var(--text-muted); }
.meta-item strong { color:var(--text); }

/* CTA 底部按钮 */
.cta-buttons { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.btn-white-outline {
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 32px; border-radius:var(--radius); font-size:1rem; font-weight:600;
  border:2px solid rgba(255,255,255,.6); color:#fff; background:transparent; cursor:pointer;
  text-decoration:none; transition:all .25s ease;
}
.btn-white-outline:hover { border-color:#fff; background:rgba(255,255,255,.1); transform:translateY(-2px); }

/* -- 上一页/下一页 -- */
.product-prev-next {
  display:flex; justify-content:space-between; align-items:center; gap:24px;
}
.pn-link {
  display:inline-flex; align-items:center; gap:8px;
  text-decoration:none; color:var(--text); font-size:.95rem; font-weight:500;
  max-width:45%; transition:all .2s; line-height:1.4;
}
.pn-link svg { flex-shrink:0; color:var(--primary); }
.pn-link:hover { color:var(--primary); }
.pn-link span { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.pn-prev { text-align:left; }
.pn-next { text-align:right; flex-direction:row-reverse; }

/* 详情下方正文区域增加上间距 */
.product-detail-section + .section { padding-top: 40px; }
.product-detail-section + .section .section-header { padding-top:0; }

/* ===== 兜底图片（5张） ===== */
.product-fallback-imgs {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}
.product-fallback-img {
  border-radius: 12px;
  overflow: hidden;
  background: #f1f5f9;
}
.product-fallback-img img {
  display: block;
  object-fit: contain;
}

/* 响应式 - 产品详情页 */
@media (max-width: 992px) {
  .product-detail-layout { grid-template-columns:1fr; gap:32px; }
  .product-gallery-col { position:static; flex-direction:column; align-self:stretch; }
  .product-main-image { height:0; padding-bottom:100%; }
  .thumbnails-wrapper { width:100%; flex-direction:row; align-self:auto; align-items:center; gap:8px; }
  .thumb-scroll-btn { width:28px; height:72px; flex-shrink:0; }
  .thumb-scroll-btn svg { transform:rotate(-90deg); }
  .product-thumbnails { flex:none; width:auto; overflow-x:auto; overflow-y:hidden; }
  .thumb-scroll-inner { flex-direction:row; align-items:center; gap:8px; position:relative; }
  .thumb-item { width:60px; height:60px; }
  .gallery-main-area { width:100%; }
  .zoom-result { display:none !important; }
  .zoom-lens { display:none !important; }
  .product-detail-title { font-size:1.4rem; }
  .product-actions { flex-direction:column; }
  .btn-action { justify-content:center; }
}
@media (max-width: 768px) {
  .product-main-image { height:0; padding-bottom:100%; }
  .product-detail-title { font-size:1.2rem; }
  .price-value { font-size:1.2rem; }
  .thumb-item { width:52px; height:52px; }
  .thumb-scroll-btn { height:52px; width:24px; }
  .thumb-scroll-btn svg { width:14px; height:14px; }
  .wechat-modal-content { padding:28px 24px; width:320px; }
}

/* =============================================
   模块6：相关文章 / 相关产品
   产品详情页底部
   ============================================= */
.related-articles-list { display:flex; flex-direction:column; gap:16px; }

/* 相关产品 4列网格 */
.related-products-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.related-products-grid .product-card {
  display:flex; flex-direction:column;
}
.related-products-grid .product-card-img {
  width:100%; height:0; padding-bottom:100%; overflow:hidden;
  background:var(--bg-alt); position:relative; flex-shrink:0;
}
.related-products-grid .product-card-img img {
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  transition:transform .5s ease;
}
.related-products-grid .product-card:hover .product-card-img img { transform:scale(1.05); }
.related-products-grid .product-card-body {
  flex:1; display:flex; flex-direction:column; padding:16px;
  justify-content:space-between;
}
.related-products-grid .product-card-body h3 {
  font-size:1rem; font-weight:700; color:var(--text);
  margin-bottom:6px;
}
.related-products-grid .product-card-body p {
  font-size:.85rem; color:var(--text-muted); line-height:1.6;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical;
  overflow:hidden; margin-bottom:0;
  padding-bottom:13px;
}
.related-products-grid .product-card-body .btn-sm {
  align-self:flex-start;
  padding:8px 18px; font-size:.82rem; font-weight:600;
  color:#fff; background:var(--primary); border-radius:6px; border:none;
  transition:all var(--transition);
}
.related-products-grid .product-card-body .btn-sm:hover { color:#fff; background:var(--primary-dark); transform:translateY(-1px); }
@media(max-width:992px) {
  .related-products-grid { grid-template-columns:repeat(2,1fr); }
}
@media(max-width:480px) {
  .related-products-grid { grid-template-columns:1fr; }
}

/* 相关文章卡片 */
.related-article-item {
  display:block; text-decoration:none; color:inherit;
  background:var(--bg-white); border:1px solid var(--border);
  border-radius:var(--radius-lg); padding:24px 28px;
  transition:all var(--transition);
}
.related-article-item:hover { border-color:var(--primary); box-shadow:var(--shadow-md); transform:translateY(-2px); }
.related-article-title { font-size:1.1rem; font-weight:700; color:var(--text); margin-bottom:6px; }
.related-article-summary { font-size:.9rem; color:var(--text-muted); line-height:1.7; margin-bottom:10px; }
.related-article-meta { display:flex; align-items:center; gap:16px; font-size:.85rem; }
.related-article-date { color:var(--text-light); }
.related-article-link { color:var(--primary); font-weight:600; transition:all .2s; }
.related-article-item:hover .related-article-link { color:var(--primary-dark); }
@media(max-width:768px) {
  .related-article-item { padding:18px 20px; }
  .related-article-title { font-size:1rem; }
}

/* =============================================
   项目详情结构化展示
   对应 product_detail_simple.html
   5板块 + 底部咨询表单
   ============================================= */

/* --- Section 基础 --- */
.proj-section { padding: 80px 0; }
.proj-section-alt { background: #f8fafc; }
.proj-section-header {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
}
.proj-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  border-radius: 12px;
  margin-bottom: 16px;
}
.proj-title {
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 10px;
  line-height: 1.25;
}
.proj-desc {
  font-size: .95rem;
  color: #64748b;
  line-height: 1.6;
  max-width: 500px;
  margin: 0 auto;
}

/* --- 板块1：项目信息卡片 --- */
.proj-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.proj-info-card {
  background: #fff;
  border: 1px solid #eef2f6;
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
  transition: all .3s ease;
}
.proj-info-card:hover {
  box-shadow: 0 8px 30px rgba(37,99,235,.1);
  border-color: rgba(37,99,235,.2);
  transform: translateY(-3px);
}
.proj-info-label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: #2563eb;
  margin-bottom: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.proj-info-value {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: #0f172a;
  line-height: 1.4;
}

/* --- 板块2：痛点卡片 --- */
.proj-pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proj-pain-item {
  background: #fff;
  border: 1px solid #eef2f6;
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.proj-pain-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #ef4444, #f97316);
  opacity: 0;
  transition: opacity .3s;
}
.proj-pain-item:hover::before { opacity: 1; }
.proj-pain-item:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,.08);
  transform: translateY(-4px);
}
.proj-pain-icon {
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  background: #fef2f2;
  border-radius: 16px;
  margin: 0 auto 18px;
  color: #ef4444;
}
.proj-pain-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 10px;
}
.proj-pain-text {
  font-size: .88rem;
  color: #64748b;
  line-height: 1.7;
  margin: 0;
}

/* --- 板块3：解决方案步骤 --- */
.proj-solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.proj-solution-step {
  background: #fff;
  border: 1px solid #eef2f6;
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: all .3s ease;
  position: relative;
}
.proj-solution-step:hover {
  box-shadow: 0 12px 40px rgba(37,99,235,.1);
  transform: translateY(-4px);
  border-color: rgba(37,99,235,.2);
}
.proj-step-num {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #2563eb;
  background: #eff6ff;
  border-radius: 12px;
  margin: 0 auto 16px;
  transition: all .3s;
}
.proj-solution-step:hover .proj-step-num {
  background: #2563eb;
  color: #fff;
}
.proj-step-title {
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 10px;
}
.proj-step-text {
  font-size: .85rem;
  color: #64748b;
  line-height: 1.7;
  margin: 0;
}

/* --- 板块4：施工实拍 --- */
.proj-construction-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.proj-construction-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: #f1f5f9;
}
.proj-construction-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.proj-construction-item:hover img { transform: scale(1.08); }
.proj-construction-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 10px 14px;
  font-size: .82rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,.7));
  text-align: center;
}
.proj-construction-placeholder {
  text-align: center;
  padding: 60px 20px;
  background: #f8fafc;
  border-radius: 16px;
  border: 2px dashed #e2e8f0;
}
.proj-construction-placeholder p {
  color: #94a3b8;
  margin: 12px 0 0;
  font-size: .95rem;
}
.proj-process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 36px;
}
.proj-process-step {
  display: inline-block;
  padding: 6px 16px;
  font-size: .82rem;
  font-weight: 600;
  color: #94a3b8;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 50px;
}
.proj-process-step.active {
  color: #2563eb;
  border-color: #2563eb;
  background: #eff6ff;
}
.proj-process-arrow {
  color: #cbd5e1;
  display: flex;
  align-items: center;
}

/* --- 板块5：完工效果 --- */
.proj-result-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proj-result-card {
  background: #fff;
  border: 1px solid #eef2f6;
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  transition: all .3s ease;
}
.proj-result-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,.08);
  transform: translateY(-4px);
}
.proj-result-icon {
  width: 72px; height: 72px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 20px;
  margin: 0 auto 18px;
}
.proj-result-card--primary .proj-result-icon {
  background: #eff6ff;
  color: #2563eb;
}
.proj-result-card--success .proj-result-icon {
  background: #f0fdf4;
  color: #16a34a;
}
.proj-result-card--accent .proj-result-icon {
  background: #fefce8;
  color: #eab308;
}
.proj-result-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 10px;
}
.proj-result-text {
  font-size: .88rem;
  color: #64748b;
  line-height: 1.7;
  margin: 0;
}

/* --- 板块6：底部咨询表单 --- */
.proj-section-form {
  background: #0f172a;
  position: relative;
  overflow: hidden;
}
.proj-section-form::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(37,99,235,.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.proj-form-box {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}
.proj-form-left { color: #fff; }
.proj-form-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.25;
}
.proj-form-desc {
  font-size: .95rem;
  color: rgba(255,255,255,.7);
  line-height: 1.7;
  margin: 0 0 28px;
}
.proj-form-desc strong { color: #fff; }
.proj-form-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.proj-form-phone,
.proj-form-wechat {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  font-size: .95rem;
  font-weight: 600;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all .25s;
}
.proj-form-phone {
  color: #0f172a;
  background: #fff;
}
.proj-form-phone:hover {
  background: #f1f5f9;
  transform: translateX(4px);
}
.proj-form-wechat {
  color: #fff;
  background: #07c160;
}
.proj-form-wechat:hover {
  background: #06ad56;
  transform: translateX(4px);
}
.proj-form-right {
  background: #1e293b;
  border-radius: 16px;
  padding: 36px;
}
.proj-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.proj-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.proj-form-row-full { grid-template-columns: 1fr; }
.proj-form input,
.proj-form textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: .9rem;
  color: #fff;
  background: #334155;
  border: 1px solid #475569;
  border-radius: 8px;
  outline: none;
  transition: all .2s;
  box-sizing: border-box;
}
.proj-form input::placeholder,
.proj-form textarea::placeholder { color: #94a3b8; }
.proj-form input:focus,
.proj-form textarea:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}
.proj-form textarea { resize: vertical; min-height: 80px; }
.proj-form-submit {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all .25s;
}
.proj-form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37,99,235,.35);
}

/* --- 响应式 --- */
@media(max-width: 992px) {
  .proj-section { padding: 60px 0; }
  .proj-info-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-pain-grid { grid-template-columns: 1fr; }
  .proj-solution-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-construction-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-result-wrap { grid-template-columns: 1fr; }
  .proj-form-box { grid-template-columns: 1fr; gap: 32px; }
  .proj-form-right { padding: 24px; }
}
@media(max-width: 640px) {
  .proj-section { padding: 40px 0; }
  .proj-section-header { margin-bottom: 32px; }
  .proj-info-grid { grid-template-columns: 1fr; }
  .proj-solution-grid { grid-template-columns: 1fr; }
  .proj-construction-grid { grid-template-columns: 1fr; }
  .proj-form-row { grid-template-columns: 1fr; }
  .proj-form-title { font-size: 1.3rem; }
  .proj-process-steps { gap: 4px; }
  .proj-process-step { font-size: .75rem; padding: 4px 10px; }
}

/* =============================================
   CTA通栏样式（与列表页保持一致）
   ============================================= */
.hub-cta {
  margin: 60px 0 0; padding: 0;
  background: linear-gradient(135deg,#1e3a5f,#2563eb);
}
.hub-cta-inner {
  max-width: 1200px; margin: 0 auto; padding: 60px 40px;
  text-align:center; color:#fff;
}
.hub-cta-inner h2 { font-size:1.6rem; font-weight:800; margin-bottom:10px; }
.hub-cta-inner p { color:rgba(255,255,255,.75); margin-bottom:28px; }
.hub-cta-inner .btn-white {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 32px; font-size:1rem; font-weight:600;
  color:#151E2D; background:#fff; border-radius:8px;
  border:none; cursor:pointer; text-decoration:none;
  transition:all var(--transition);
}
.hub-cta-inner .btn-white:hover { transform:translateY(-2px); box-shadow:0 8px 25px rgba(0,0,0,.2); }

/* =============================================
   面包屑导航（灰色通栏背景）
   ============================================= */
.breadcrumb-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.breadcrumb-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: .85rem;
  color: var(--text-muted);
}
.breadcrumb-inner a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color .2s;
}
.breadcrumb-inner a:hover { color: var(--primary); }
.breadcrumb-sep {
  display: inline-flex;
  align-items: center;
  color: var(--text-light);
}
.breadcrumb-current { color: var(--text); font-weight: 600; }

/* ===== CTA通栏（复用home.css样式） ===== */
.proj-section.section-cta {
  background: linear-gradient(135deg, #1e3a5f 0%, #0f2440 100%);
  padding: 80px 0;
}
.cta-box {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.cta-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-actions .btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}
.cta-actions .btn-outline:hover {
  background: #fff;
  color: #6ba802;
  border-color: #fff;
}