/* ============================================================
   Megatex Blanket — OEM 定制单页样式
   结构：Banner / Intro左图右文 / 定制维度图标条 / 图文交替×2
        / 五步流程(浅) / Who We Serve 4卡 / FAQ折叠 / 深色CTA+表单
   设计依据：PDF 第6页；复用列表页 banner 与详情页折叠面板语言
   ============================================================ */

.cu-container {
  max-width: 1158px; margin: 0 auto; padding: 0 24px;
}
.cu-sec-title {
  font-size: clamp(18px, 2.6vw, 28px);
  text-align: center; margin-bottom: 44px;
  font-weight: 400;
}
.cu-sec-title::after {
  content: ""; display: block; width: 48px; height: 2px;
  background: var(--ink); margin: 14px auto 0;
}

/* ---------- 1. Banner（复用列表页结构） ---------- */
.page-banner {
  position: relative;
  min-height: 358px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.page-banner-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
}
.page-banner::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(65,65,65,.30) 0%, rgba(65,65,65,.42) 55%, rgba(65,65,65,.55) 100%);
}
.page-banner-inner {
  position: relative; z-index: 1;
  text-align: center; padding: 72px 24px;
}
.page-banner-title {
  color: #fff;
  font-size: clamp(20px, 3.2vw, 38px);
  letter-spacing: 2px;
  text-shadow: 0 2px 18px rgba(0,0,0,.25);
}
.crumb { margin-top: 18px; }
.crumb ol {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 4px 10px;
  font-size: 14px; color: rgba(255,255,255,.85);
  list-style: none;
}
.crumb li { display: flex; align-items: center; gap: 10px; }
.crumb li + li::before { content: "/"; color: rgba(255,255,255,.55); }
.crumb a { color: rgba(255,255,255,.9); }
.crumb a:hover { color: #fff; text-decoration: underline; }
/* Banner 副标题 + CTA 按钮（图二版式） */
.page-banner-sub {
  color: rgba(255, 255, 255, .92);
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 1.7;
  max-width: 780px;
  margin: 18px auto 0;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .25);
}
.page-banner-btn {
  margin-top: 26px;
  border-radius: 8px;
}

/* ---------- 2. Intro 左图右文 ---------- */
.cu-intro { background: var(--surface); padding: 72px 0 80px; }
.cu-split {
  display: grid;
  grid-template-columns: minmax(0, 560px) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}
.cu-intro-img {
  width: 100%; height: auto;
  border-radius: var(--radius);
  box-shadow: 0 10px 36px rgba(0,0,0,.10);
}
.cu-intro-text h2, .cu-feature-text h2 {
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.3; margin-bottom: 18px;
}
.cu-intro-text p, .cu-feature-text p {
  font-size: 15px; color: #555; line-height: 1.75;
  margin-bottom: 14px;
}
.cu-points {
  list-style: none;
  margin: 18px 0 26px;
  display: flex; flex-direction: column; gap: 10px;
}
.cu-points li {
  display: flex; align-items: baseline; gap: 10px;
  font-size: 14.5px; color: var(--ink);
}
.cu-points li::before {
  content: "✓"; flex: none;
  color: var(--ink); font-weight: 700;
}
.cu-btn { margin-top: 6px; }

/* ---------- 3. 图文交替区（$piclist 驱动：第一条上文字下图，后续左右交替） ---------- */
.cu-blocks { background: #fff; }
.cu-block { padding: 72px 0; }
.cu-block-lead-text { text-align: center; max-width: 940px; margin: 0 auto; }
.cu-block-lead-text h2, .cu-block-text h2 {
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.3; margin-bottom: 18px;
}
.cu-block-lead-text p, .cu-block-text p {
  font-size: 15px; color: #555; line-height: 1.75;
  margin-bottom: 14px;
}
.cu-block-lead-pic { margin-top: 40px; }
.cu-block-lead-pic img { width: 100%; height: auto; border-radius: var(--radius); }
.cu-block-pic img {
  width: 100%; height: auto;
  border-radius: var(--radius);
  box-shadow: 0 10px 36px rgba(0,0,0,.10);
}
.cu-split.reverse { direction: rtl; }
.cu-split.reverse > * { direction: ltr; }

/* ---------- 4. 制造流程（图二：5 步线型图标 + 虚线连接） ---------- */
.cu-sec-sub {
  text-align: left; font-size: 15px; color: #666; line-height: 1.7;
  max-width: 1200px; margin: -30px 0 14px;
}
.cu-step-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  color: var(--ink);
  margin-bottom: 12px;
}
.cu-step-icon svg { width: 48px; height: 48px; }
.cu-step-icon img { width: 56px; height: 56px; object-fit: contain; }
.cu-process--flow .cu-steps li:not(:last-child)::after {
  top: 79px;
  height: 0; border-radius: 0;
  background: none;
  border-top: 1px dashed #cccccc;
}

/* ---------- 5. Who We Serve（图二：6 列图标网格） ---------- */
.cu-serve6 { background: #fff; padding: 72px 0 38px 0;}
.cu-serve6-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.cu-serve6-item {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px 16px 24px;
  text-align: center;
  transition: transform .25s ease, box-shadow .25s ease;
}
.cu-serve6-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,0,0,.08);
}
.cu-serve6-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  color: var(--ink);
  margin-bottom: 14px;
}
.cu-serve6-icon svg { width: 18px;}
.cu-serve6-icon img { width: 18px; object-fit: contain; }
.cu-serve6-item h3 { font-size: 15px; margin-bottom: 8px; }
.cu-serve6-item p { font-size: 12.5px; color: #666; line-height: 1.6; }

/* ---------- 6. 询盘 CTA + 快速表单（复制 about 页同款，图三） ---------- */
.inquiry { background: var(--surface); }
.inquiry-title {
  font-size: clamp(22px, 2.2vw, 30px); text-align: center; line-height: 1.5;
}
.inquiry-btn { display: table; margin: 28px auto 40px; }
.inquiry-form {
  display: grid; grid-template-columns: 1fr 1fr 2fr 1fr;
  gap: 18px; align-items: end;
}
.field label {
  display: block; font-size: 13px; font-weight: 600; color: var(--ink);
  margin-bottom: 8px;
}
.field input[type="text"],
.field input[type="email"] {
  width: 100%; height: 46px; padding: 0 16px;
  border: 1.5px solid var(--line); border-radius: var(--radius);
  font: inherit; outline: none; background: #fff;
  transition: border-color .2s;
}
.field input:focus { border-color: var(--ink); }
.captcha-inline { display: flex; gap: 10px; align-items: center; }
.captcha-inline input { flex: 1; min-width: 0; }
.captcha-inline img { border-radius: 6px; cursor: pointer; flex-shrink: 0; height: 44px; }
.form-submit { grid-column: 4; display: flex; justify-content: flex-end; padding-bottom: 2px; }
.form-submit button {
  background: none; border: none; padding: 0;
  color: var(--ink); font-weight: 600; font-size: 14px;
  cursor: pointer; transition: opacity .2s;
  white-space: nowrap;
}
.form-submit button:hover { opacity: .6; }

/* ---------- 3. 定制维度图标条 ---------- */
.cu-dims { background: var(--bg); padding: 72px 0; }
.cu-dims-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}
.cu-dims-grid li {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px 20px 26px;
  text-align: center;
  transition: transform .25s ease, box-shadow .25s ease;
}
.cu-dims-grid li:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,0,0,.08);
}
.cu-dim-icon {
  display: inline-flex;
  width: 56px; height: 56px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--bg);
  color: var(--ink);
  margin-bottom: 16px;
}
.cu-dim-icon svg { width: 30px; height: 30px; }
.cu-dims-grid h3 { font-size: 16px; margin-bottom: 8px; }
.cu-dims-grid p { font-size: 13px; color: #666; line-height: 1.55; }

/* ---------- 4. 图文交替 ---------- */
.cu-feature { background: var(--surface); padding: 72px 0; }
.cu-feature--alt { background: var(--bg); }
.cu-feature-img {
  width: 100%; height: auto;
  border-radius: var(--radius);
  box-shadow: 0 10px 36px rgba(0,0,0,.10);
}

/* ---------- 5. 五步流程（浅色带） ---------- */
.cu-process { background: #f5f5f5; padding: 72px 0 64px; }
.cu-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  counter-reset: step;
}
.cu-steps li {
  position: relative;
  text-align: center;
  padding: 0 8px;
}
.cu-step-num {
  display: inline-flex;
  width: 52px; height: 52px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--ink); color: #fff;
  font-size: 20px; font-weight: 700;
  margin-bottom: 16px;
  transition: transform .25s ease;
}
.cu-steps li:hover .cu-step-num { transform: scale(1.1); }
/* 步骤间连接线 */
.cu-steps li:not(:last-child)::after {
  content: ""; position: absolute;
  top: 26px; left: calc(50% + 36px);
  width: calc(100% - 72px); height: 3px;
  border-radius: 2px;
  background: var(--ink);
  opacity: .18;
}
.cu-steps h3 { font-size: 17px; margin-bottom: 8px; }
.cu-steps p { font-size: 13px; color: #666; line-height: 1.55; }

/* ---------- 6. Who We Serve ---------- */
.cu-serve { background: var(--bg); padding: 72px 0; }
.cu-serve-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.cu-serve-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px 32px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.cu-serve-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,0,0,.08);
}
.cu-serve-card h3 {
  font-size: 19px; margin-bottom: 12px;
  padding-left: 12px;
  border-left: 4px solid var(--ink);
}
.cu-serve-card p { font-size: 14px; color: #555; line-height: 1.7; }

/* ---------- 7. FAQ 折叠（复用详情页 details 语言） ---------- */
.cu-faq { background: var(--surface); padding: 72px 0; }
.cu-faq-wrap { max-width: 900px; }
.accordion { display: flex; flex-direction: column; gap: 12px; }
.acc {
  background: var(--surface); border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.acc summary {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  font-size: 16px; font-weight: 700; color: var(--ink);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background .2s;
}
.acc summary::-webkit-details-marker { display: none; }
.acc summary:hover { background: var(--bg); }
.acc-icon { position: relative; flex: none; width: 18px; height: 18px; }
.acc-icon::before, .acc-icon::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  background: var(--ink);
  transition: transform .25s ease, opacity .25s ease;
}
.acc-icon::before { width: 16px; height: 2px; transform: translate(-50%, -50%); }
.acc-icon::after { width: 2px; height: 16px; transform: translate(-50%, -50%); }
.acc[open] .acc-icon::after { opacity: 0; transform: translate(-50%, -50%) rotate(90deg); }
.acc-body {
  padding: 0 24px 20px;
  font-size: 14px; line-height: 1.8; color: #555;
  border-top: 1px solid var(--line);
}
.acc-body p { margin: 16px 0 0; }

/* ---------- 8. 深色 CTA + 表单 ---------- */
.cu-cta { background: var(--ink); padding: 72px 0 80px; }
.cu-cta h2 {
  color: #fff; font-size: clamp(24px, 2.6vw, 34px);
  text-align: center; letter-spacing: 1px;
}
.cu-cta > .cu-container > p {
  color: rgba(255,255,255,.72);
  text-align: center; font-size: 15px;
  margin: 14px 0 40px;
}
.cu-form {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 18px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px;
  padding: 32px;
}
.cu-form .field label {
  display: block;
  font-size: 13px; font-weight: 600;
  color: rgba(255,255,255,.85);
  margin-bottom: 8px;
}
.cu-form .field input {
  width: 100%; height: 46px; padding: 0 16px;
  border: 1.5px solid rgba(255,255,255,.22);
  border-radius: 8px;
  font: inherit; outline: none;
  background: rgba(255,255,255,.08);
  color: #fff;
  transition: border-color .2s, background .2s;
}
.cu-form .field input::placeholder { color: rgba(255,255,255,.4); }
.cu-form .field input:focus {
  border-color: rgba(255,255,255,.6);
  background: rgba(255,255,255,.12);
}
.cu-form .field-wide { grid-column: 1 / -1; }
.captcha-inline { display: flex; gap: 10px; align-items: center; }
.captcha-inline input { flex: 1; min-width: 0; }
.captcha-inline img { border-radius: 6px; cursor: pointer; flex-shrink: 0; }
.cu-form .form-submit { grid-column: 1 / -1; display: flex; justify-content: flex-end; }
.cu-form .form-submit button {
  padding: 13px 38px; border-radius: 999px;
  background: #fff; color: var(--ink);
  font-weight: 600; font-size: 15px;
  transition: transform .2s, box-shadow .2s;
}
.cu-form .form-submit button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
}
.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

/* ---------- 滚动入场 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .cu-dims-grid { grid-template-columns: repeat(3, 1fr); }
  .cu-serve6-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .cu-split { grid-template-columns: 1fr; gap: 32px; }
  .cu-split.reverse .cu-block-text { order: -1; }
  .cu-intro-img { max-width: 560px; margin: 0 auto; }
  .cu-steps { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .cu-steps li:not(:last-child)::after { display: none; }
  .cu-dims-grid { grid-template-columns: repeat(2, 1fr); }
  .cu-serve6-grid { grid-template-columns: repeat(3, 1fr); }
  .inquiry-form { grid-template-columns: 1fr 1fr; }
  .field-wide { grid-column: 1 / -1; }
  .form-submit { grid-column: 1 / -1; justify-content: flex-end; }
}
@media (max-width: 640px) {
  .cu-intro, .cu-dims, .cu-feature, .cu-process, .cu-serve, .cu-faq, .cu-block, .cu-serve6 { padding: 48px 0; }
  .cu-block-lead-pic { margin-top: 28px; }
  .cu-cta { padding: 52px 0 60px; }
  .cu-dims-grid, .cu-serve-grid, .cu-steps, .cu-form, .inquiry-form { grid-template-columns: 1fr; }
  .cu-serve6-grid { grid-template-columns: repeat(2, 1fr); }
  .cu-serve-card { padding: 24px; }
  .cu-form { padding: 22px; }
  .page-banner { min-height: 200px; }
  .page-banner-inner { padding: 52px 18px; }
  .cu-steps li { padding: 0; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .reveal, .cu-step-num, .cu-dims-grid li, .cu-serve-card { transition: none; }
  .reveal { opacity: 1; transform: none; }
}