/* ===== 基礎設定 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 品牌色彩 - 對齊首頁風格 */
  --primary-blue: #1266FF;
  --primary-blue-dark: #0A1E3D;
  --accent-cyan: #00C8FF;
  --text-primary: #2c3e50;
  --text-secondary: #5a6c7d;
  --text-muted: #8b9aa8;
  --bg-dark: #0A1E3D;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-color: #e1e8ed;
  
  /* 字型 */
  --font-primary: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  
  /* Tweakable 字體大小 */
  --base-font-size: 16px;
  --scale-factor: 1;
}

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  line-height: 1.7;
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  font-size: calc(var(--base-font-size) * var(--scale-factor));
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 導航列 ===== */
.top-nav {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.top-nav .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.8;
}

.logo-full {
  height: 36px;
  width: auto;
}

.breadcrumb {
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--primary-blue);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ===== 主視覺區 ===== */
.hero {
  background: linear-gradient(135deg, #e6f0fa 0%, #d4e3f4 100%);
  padding: 100px 0 100px;
  position: relative;
  overflow: hidden;
  min-height: 600px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: 
    radial-gradient(circle at 75% 50%, rgba(18,102,255,0.06) 0%, transparent 55%),
    radial-gradient(circle at 25% 40%, rgba(100,170,255,0.04) 0%, transparent 50%);
}

.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -5%;
  width: 55%;
  height: 60%;
  transform: translateY(-50%);
  background: radial-gradient(ellipse at center left, rgba(210,230,250,0.5) 0%, transparent 65%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 500px 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: calc(42px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-content .intro {
  font-size: calc(18px * var(--scale-factor));
  color: #3d5266;
  margin-bottom: 32px;
  line-height: 1.8;
  max-width: 32em;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #1266FF, #00C8FF);
  color: white;
  box-shadow: 0 8px 24px rgba(18,102,255,0.35);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(18,102,255,0.5), 0 0 32px rgba(0,200,255,0.45);
}

.btn-outline {
  background: white;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
}

.hero-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  margin: -40px 0 -40px 0;
}

.hero-image img {
  width: 115%;
  max-width: 1000px;
  height: auto;
  display: block;
  position: relative;
  z-index: 3;
  mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%),
                linear-gradient(to bottom, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%),
                      linear-gradient(to bottom, transparent 0%, black 8%, black 92%, transparent 100%);
  mask-composite: intersect;
  -webkit-mask-composite: source-in;
}

.hero-image::before {
  content: '';
  position: absolute;
  bottom: 8%;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 30%;
  background: radial-gradient(ellipse at center, rgba(18,102,255,0.15) 0%, rgba(100,170,255,0.08) 40%, transparent 70%);
  filter: blur(40px);
  z-index: 1;
  pointer-events: none;
}

.hero-visual-deco {
  position: absolute;
  left: -8%;
  top: 50%;
  transform: translateY(-50%);
  width: 220px;
  height: 300px;
  opacity: 0.25;
  pointer-events: none;
  z-index: 2;
}

.hero-visual-deco svg {
  width: 100%;
  height: 100%;
}

/* ===== 模組化點選區 ===== */
.tabs-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.tabs-section .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.tabs-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 40px;
  overflow-x: auto;
}

.tab-btn {
  padding: 16px 32px;
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
  font-family: var(--font-primary);
}

.tab-btn.active {
  color: var(--primary-blue);
  border-bottom-color: var(--primary-blue);
}

.tab-btn:hover {
  color: var(--primary-blue);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-item h3 {
  font-size: calc(18px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 12px;
}

.feature-item p {
  font-size: calc(15px * var(--scale-factor));
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 規格諮詢區（Tab 內容）===== */
.spec-consult {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 12px;
  padding: 48px;
  text-align: center;
  border: 2px solid var(--primary-blue);
}

.spec-consult h3 {
  font-size: calc(24px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 16px;
}

.spec-consult p {
  font-size: calc(15px * var(--scale-factor));
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 12px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 服務流程（流程圖風格）===== */
.process-section {
  padding: 80px 0;
  background: var(--bg-white);
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at 50% 50%, rgba(18,102,255,0.03) 0%, transparent 60%);
}

.process-section .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section-title {
  text-align: center;
  font-size: calc(32px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 64px;
}

.process-flowchart {
  display: flex;
  gap: 0;
  align-items: stretch;
  justify-content: center;
  flex-wrap: nowrap;
}

.process-step {
  flex: 1 1 0;
  min-width: 0;
  max-width: 210px;
  text-align: center;
  position: relative;
}

.step-box {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 24px 16px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.step-box:hover {
  border-color: var(--primary-blue);
  background: #f8f9fa;
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(18,102,255,0.15);
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1266FF, #00C8FF);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 12px;
  box-shadow: 0 4px 12px rgba(0,200,255,0.4);
}

.step-title {
  font-size: calc(20px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.step-desc {
  font-size: calc(13px * var(--scale-factor));
  color: var(--text-secondary);
  line-height: 1.6;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s;
}

.step-box:hover .step-desc {
  opacity: 1;
  max-height: 200px;
  margin-top: 8px;
}

.flow-arrow {
  flex: 0 0 auto;
  align-self: center;
  width: 28px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
  font-size: 24px;
}

@media (max-width: 968px) {
  .process-flowchart {
    flex-direction: column;
    gap: 16px;
  }
  
  .process-step {
    flex: 0 0 auto;
    width: 100%;
    max-width: 400px;
  }
  
  .flow-arrow {
    transform: rotate(90deg);
    width: 40px;
  }
}

/* ===== 工程案例 ===== */
.cases-section {
  padding: 80px 0;
  background: var(--bg-light);
}

.cases-section .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.cases-section .section-title {
  color: var(--primary-blue);
}

.cases-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 48px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.cases-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
}

.case-tag {
  padding: 8px 16px;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.case-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.case-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: #e9ecef;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  border: 2px dashed var(--border-color);
}

/* ===== 諮詢表單區 ===== */
.contact-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.contact-section .container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.contact-simple {
  text-align: center;
}

.contact-simple h2 {
  font-size: calc(32px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 16px;
}

.contact-simple .intro {
  font-size: calc(16px * var(--scale-factor));
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.consult-info {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 40px;
  text-align: left;
}

.consult-info h3 {
  font-size: calc(18px * var(--scale-factor));
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 16px;
}

.info-list {
  list-style: none;
  padding: 0;
}

.info-list li {
  font-size: calc(15px * var(--scale-factor));
  color: var(--text-secondary);
  padding: 8px 0 8px 24px;
  position: relative;
  line-height: 1.6;
}

.info-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-blue);
  font-weight: 700;
}

.contact-cta {
  margin-bottom: 40px;
}

.btn-lg {
  padding: 18px 40px;
  font-size: calc(18px * var(--scale-factor));
}

.contact-details-simple {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.contact-details-simple .contact-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 20px 12px;
  font-size: calc(14px * var(--scale-factor));
}

.contact-details-simple .contact-item strong {
  color: var(--primary-blue);
  font-weight: 600;
}

@media (max-width: 640px) {
  .contact-details-simple .contact-item {
    display: flex;
    justify-content: center;
    margin: 0 0 12px 0;
  }
}

/* ===== 相關商品推薦 ===== */
.related-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.related-section .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.related-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(18,102,255,0.15);
  border-color: var(--accent-cyan);
}

.related-image {
  width: 100%;
  aspect-ratio: 4/3;
  background: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  border-bottom: 1px solid var(--border-color);
}

.related-content {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.related-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.related-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-blue);
  text-decoration: none;
  transition: gap 0.2s;
}

.related-link:hover {
  gap: 8px;
  color: var(--accent-cyan);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 40px 0 24px;
  text-align: center;
}

.footer .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer p {
  font-size: 14px;
  opacity: 0.8;
}

/* ===== 響應式設計 ===== */
@media (max-width: 968px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 0 24px;
  }
  
  .hero {
    padding: 60px 0;
    min-height: auto;
  }
  
  .hero-image {
    margin: 0;
  }
  
  .hero-image img {
    width: 100%;
  }
  
  .hero-visual-deco {
    display: none;
  }
  
  .process-timeline {
    flex-direction: column;
  }
  
  .process-step::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero-content h1 {
    font-size: 28px;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .tabs-nav {
    flex-wrap: nowrap;
  }
  
  .tab-btn {
    padding: 12px 20px;
    font-size: 14px;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

/* ===== 規格表（產品08等）===== */
.spec-table {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  background: white;
}

.spec-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--border-color);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  padding: 16px 20px;
  background: linear-gradient(135deg, #1266FF 0%, #00C8FF 100%);
  color: white;
  font-weight: 600;
  font-size: calc(15px * var(--scale-factor));
  display: flex;
  align-items: center;
}

.spec-value {
  padding: 16px 20px;
  font-size: calc(15px * var(--scale-factor));
  color: var(--text-primary);
  background: #f8f9fa;
  display: flex;
  align-items: center;
}

@media (max-width: 640px) {
  .spec-row {
    grid-template-columns: 120px 1fr;
  }
  
  .spec-label,
  .spec-value {
    padding: 12px 14px;
    font-size: 13px;
  }
}


/* ===== 新站補充 ===== */
.crumbs{font-size:13px;color:#8b9aa8;margin-bottom:14px}
.crumbs a{color:#5a6c7d;text-decoration:none}
.crumbs a:hover{color:#1266FF}
.contact-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.spec-consult .spec-table{margin:8px auto 20px;text-align:left}
.product-banner{background:linear-gradient(to bottom,#e6f0fa 0%,#d4e3f4 50%,#fff 100%)}
.product-banner img{width:100%;height:auto;display:block;max-width:1600px;margin:0 auto}
@media (max-width:640px){
  .hero{padding:40px 0 32px!important;min-height:auto!important}
  .hero h1{font-size:28px!important}
  .tabs-nav{overflow-x:auto;flex-wrap:nowrap!important;-webkit-overflow-scrolling:touch;justify-content:flex-start!important}
  .tab-btn{flex:0 0 auto;white-space:nowrap}
  .btn-lg{padding:14px 24px}
}
/* 常見問題（產品內容「區塊」填 常見問題：標題＝問題、說明＝回答） */
.faq-section{padding:72px 20px;background:#fff}
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq-item{border:1px solid #dbe5ef;border-radius:12px;background:#f8fbfe;padding:0 22px}
.faq-item summary{cursor:pointer;list-style:none;padding:18px 28px 18px 0;font-size:17px;font-weight:700;color:#0A1E3D;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";position:absolute;right:0;top:14px;font-size:22px;color:#1266FF}
.faq-item[open] summary:after{content:"−"}
.faq-item p{margin:0;padding:0 0 18px;font-size:15.5px;line-height:1.8;color:#3d5166}

/* 主視覺放循環短片時：乾淨的圓角卡片，不做邊緣霧化 */
.hero-image video{display:block;position:relative;z-index:3;width:100%;max-width:760px;height:auto;aspect-ratio:16/9;border-radius:16px;background:#fff;box-shadow:0 18px 48px rgba(10,30,61,.18);-webkit-mask-image:none;mask-image:none}

/* 尺寸小圖：統一放在規格諮詢的「尺寸」那一列，旁邊是直接標好尺寸的產品圖 */
.dim-fig{margin:0;border-radius:10px;overflow:hidden;background:#dbe8f7;box-shadow:0 0 0 1px #dbe5ef}
.dim-fig svg{display:block;width:100%;height:auto}
.dim-ext{stroke:#1266FF;opacity:.75;fill:none}
.dim-line{stroke:#1266FF;fill:none}
.dim-end{fill:#1266FF}
.dim-pill{fill:#fff;stroke:#1266FF}
.dim-text{fill:#0A1E3D;font-weight:700;text-anchor:middle;font-family:Inter,'Noto Sans TC',sans-serif}
.spec-row--dim .spec-value{justify-content:space-between;gap:16px}
.spec-row--dim .dim-fig{flex:0 0 224px}
@media (max-width:640px){
  .spec-row--dim{grid-template-columns:1fr}
  .spec-row--dim .spec-value{flex-direction:column;align-items:flex-start}
  .spec-row--dim .dim-fig{flex:none;width:100%;max-width:280px}
}

/* ===== 手機版精簡（產品頁）：服務流程、相關產品、諮詢區原本約 4,500px，壓到約 1,700px ===== */
.consult-info summary{list-style:none;cursor:default}
.consult-info summary::-webkit-details-marker{display:none}
.consult-info summary h3{margin:0}
@media (max-width:640px){
  .process-section{padding:40px 0}
  .process-flowchart{gap:10px;align-items:stretch}
  .process-step{max-width:none}
  .flow-arrow{display:none}
  .step-box{display:grid;grid-template-columns:36px 1fr;column-gap:14px;align-items:center;text-align:left;padding:14px 16px;min-height:0;border-width:1px}
  .step-box:hover{transform:none;box-shadow:0 2px 8px rgba(0,0,0,0.04)}
  .step-number{grid-row:1/3;width:36px;height:36px;font-size:15px;margin:0}
  .step-title{font-size:16px;margin:0}
  .step-desc{grid-column:2;opacity:1;max-height:none;margin:2px 0 0;font-size:13px;line-height:1.55}
  .related-section{padding:40px 0}
  .related-grid{grid-template-columns:1fr;gap:10px}
  .related-card{position:relative;flex-direction:row;border-radius:12px}
  .related-card:hover{transform:none}
  .related-image{flex:none;width:104px;aspect-ratio:auto;align-self:stretch;min-height:84px;border-bottom:0;border-right:1px solid var(--border-color)}
  .related-image img{padding:6px}
  .related-content{padding:12px 14px;min-width:0;justify-content:center;gap:4px}
  .related-content h3{font-size:15.5px;line-height:1.4;margin:0}
  .related-content p{font-size:13px;line-height:1.55;margin:0;flex:none;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .related-link{font-size:13px;margin-top:2px}
  .related-link::after{content:'';position:absolute;inset:0}
  .contact-section{padding:40px 0}
  .contact-simple h2{font-size:24px;margin-bottom:12px}
  .contact-simple .intro{font-size:15px;line-height:1.7;margin-bottom:20px}
  .consult-info{padding:16px 18px;margin-bottom:24px}
  .consult-info summary{cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .consult-info summary::after{content:'+';font-size:22px;line-height:1;color:var(--primary-blue);font-weight:400}
  .consult-info[open] summary::after{content:'\2212'}
  .consult-info h3{font-size:16px}
  .consult-info[open] .info-list{margin-top:10px}
  .info-list li{font-size:14px;padding:5px 0 5px 22px}
  .contact-cta{margin-bottom:0}
}