/* 台拓 — 綠能與儲能 ｜ 儲能系統（AFC 儲能系統規劃與建置）
   命名前綴：ess-（energy storage system）
   依賴：about-history.css 提供 .ah-inner-header 與 _Breadcrumb 樣式
   本檔負責：Banner 主視覺、關於 AFC、核心價值、服務內容、工程流程、
            系統安全設計（深色）、工程實績（照片牆）、應用場域、CTA、響應式。
   來源：handoff 儲能系統.css，token 由 styles.css 改為本檔自帶 ess- 變數；
        品牌紅維持 #E0121A 與全站一致。
*/

:root {
  --ess-red: #E0121A;
  --ess-red-dark: #B30E14;
  --ess-red-soft: #FEE2E4;
  --ess-ink: #0E0F11;
  --ess-ink-2: #1A1B1F;
  --ess-paper: #F1F1F4;
  --ess-paper-2: #FAFAFB;
  --ess-white: #FFFFFF;
  --ess-muted: #6B7280;
  --ess-muted-2: #9CA3AF;
  --ess-border: #E5E7EB;
  --ess-coral: #F4B0A8;
  --ess-coral-2: #FAD2CC;
  --ess-yellow: #FACC15;
  --ess-radius: 14px;
  --ess-radius-lg: 22px;
  --ess-shadow-card: 0 1px 2px rgba(15,17,21,.04), 0 8px 24px rgba(15,17,21,.06);
  --ess-shadow-card-hover: 0 6px 12px rgba(15,17,21,.06), 0 24px 48px rgba(15,17,21,.10);
}

/* ============ 共用容器 ============ */
.ess-container {
  width: min(1280px, calc(100% - 80px));
  margin-inline: auto;
}

/* ============ 共用區段（背景交替 / 深色） ============ */
.ess-section { padding: 110px 0; position: relative; }
.ess-section.ess-paper { background: var(--ess-paper); }
.ess-section.ess-white { background: #fff; }
.ess-section.ess-dark { background: var(--ess-ink); color: #fff; }

/* ============ 共用：眉標（eyebrow）+ 黃色閃電 ============ */
.ess-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ess-red);
  letter-spacing: .04em;
  font-family: 'Noto Sans TC', sans-serif;
  margin-bottom: 22px;
}
.ess-bolt {
  display: inline-block;
  width: 14px;
  height: 14px;
  flex: none;
  background: var(--ess-yellow);
  clip-path: polygon(40% 0, 100% 0, 60% 45%, 100% 45%, 0 100%, 40% 55%, 0 55%);
}

/* ============ 區段抬頭（置中／窄版） ============ */
.ess-head-c {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.ess-head-c .ess-eyebrow { justify-content: center; }
.ess-head-c h2 {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.16;
  letter-spacing: -.01em;
  margin: 12px 0 16px;
  color: var(--ess-ink);
}
.ess-head-c p {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ess-muted);
  margin: 0;
}

/* ---------- 頁面抬頭 / Banner 主視覺 ---------- */
.ess-hero {
  position: relative;
  background:
    radial-gradient(ellipse 760px 480px at 12% 28%, #F4EFEC 0%, transparent 62%),
    linear-gradient(180deg, #F7F5F2 0%, #FBFAF8 100%);
  overflow: hidden;
  padding: 76px 0 84px;
}
.ess-hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.ess-hero h1 {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: clamp(38px, 4.8vw, 60px);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0 0 24px;
  color: var(--ess-ink);
}
.ess-hero p.ess-lead {
  font-size: 17px;
  line-height: 1.9;
  color: #3F4350;
  max-width: 560px;
  margin: 0;
  font-family: 'Noto Sans TC', sans-serif;
}
.ess-hero-art {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--ess-shadow-card);
}
.ess-hero-art img {
  display: block;
  width: 100%;
  height: 400px;
  max-height: none; /* 覆寫 Voltz main.css 全域 img max-height:100% */
  object-fit: cover;
}

/* ---------- 關於 AFC（定義／編輯式） ---------- */
.ess-about-grid {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 64px;
  align-items: start;
}
.ess-about-left .ess-eyebrow { margin-bottom: 18px; }
.ess-about-left h2 {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1.18;
  letter-spacing: -.01em;
  margin: 0 0 22px;
  color: var(--ess-ink);
}
.ess-abbr-card {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--ess-border);
  border-radius: 16px;
  padding: 22px 26px;
  box-shadow: var(--ess-shadow-card);
}
.ess-abbr-card .ess-abbr {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 34px;
  letter-spacing: .04em;
  color: var(--ess-red);
  line-height: 1;
}
.ess-abbr-card .ess-abbr-full {
  font-family: 'Manrope', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--ess-muted);
}
.ess-abbr-card .ess-abbr-zh {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--ess-ink);
  margin-top: 2px;
}
.ess-about-body p {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 16.5px;
  line-height: 2.05;
  color: #3F4350;
  margin: 0 0 22px;
}
.ess-about-body p:last-child { margin-bottom: 0; }
.ess-about-body p strong { color: var(--ess-ink); font-weight: 700; }
.ess-about-body .ess-pull {
  border-left: 3px solid var(--ess-red);
  padding-left: 22px;
  margin-top: 28px;
}
.ess-about-body .ess-pull p {
  font-weight: 700;
  color: var(--ess-ink);
  font-size: 18px;
  line-height: 1.85;
  margin: 0;
}

/* ---------- 核心價值（4 卡） ---------- */
.ess-value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.ess-value-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--ess-border);
  border-radius: var(--ess-radius);
  padding: 30px 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-color .2s;
  box-shadow: var(--ess-shadow-card);
}
.ess-value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ess-shadow-card-hover);
  border-color: transparent;
}
.ess-value-card .ess-v-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ess-value-card .ess-v-ico {
  width: 52px; height: 52px;
  border-radius: 13px;
  background: var(--ess-red-soft);
  display: grid; place-items: center;
  transition: background .25s ease;
}
.ess-value-card:hover .ess-v-ico { background: var(--ess-red); }
.ess-value-card .ess-v-ico .ess-bolt {
  width: 22px; height: 22px;
  background: var(--ess-red);
  transition: background .25s ease;
}
.ess-value-card:hover .ess-v-ico .ess-bolt { background: #fff; }
.ess-value-card .ess-v-num {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--ess-muted-2);
}
.ess-value-card h3 {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -.005em;
  color: var(--ess-ink);
  margin: 0;
}
.ess-value-card p {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ess-muted);
  margin: 0;
}
.ess-value-card .ess-v-img {
  display: block;
  width: 100%;
  height: 150px;
  max-height: none; /* 覆寫 Voltz main.css 全域 img max-height:100% */
  object-fit: cover;
  border-radius: 12px;
  margin-top: 4px;
}

/* ---------- 服務內容（解決方案 + 清單） ---------- */
.ess-svc-solution {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.ess-svc-left .ess-eyebrow { margin-bottom: 18px; }
.ess-svc-left h2 {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0 0 20px;
  color: var(--ess-ink);
}
.ess-svc-left p {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 16px;
  line-height: 1.95;
  color: #3F4350;
  margin: 0;
  max-width: 440px;
}
.ess-svc-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
}
.ess-svc-checklist li {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--ess-border);
  border-radius: 12px;
  padding: 16px 18px;
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 600;
  font-size: 15.5px;
  color: var(--ess-ink);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s;
}
.ess-svc-checklist li:hover {
  transform: translateY(-2px);
  box-shadow: var(--ess-shadow-card);
  border-color: var(--ess-coral);
}
.ess-svc-checklist li .ess-n {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ess-red);
  background: var(--ess-red-soft);
  width: 30px; height: 30px;
  border-radius: 8px;
  display: grid; place-items: center;
  flex: none;
}

/* ---------- 工程設計流程（6 階段） ---------- */
.ess-process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.ess-process-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--ess-border);
  border-radius: var(--ess-radius);
  padding: 30px 28px 28px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .2s;
  box-shadow: var(--ess-shadow-card);
}
.ess-process-card .ess-p-body { flex: 1 1 auto; min-width: 0; }
.ess-process-card .ess-p-media { flex: none; }
.ess-process-card .ess-p-media img {
  display: block;
  width: 130px;
  height: 130px;
  max-height: none; /* 覆寫 Voltz main.css 全域 img max-height:100% */
  object-fit: cover;
  border-radius: 12px;
}
.ess-process-card::after {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0;
  background: var(--ess-red);
  transition: width .25s ease;
}
.ess-process-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ess-shadow-card-hover);
  border-color: transparent;
}
.ess-process-card:hover::after { width: 4px; }
.ess-process-card:hover .ess-p-num {
  color: var(--ess-red);
}
.ess-p-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}
.ess-p-num {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 46px;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--ess-coral-2);
  transition: color .25s ease;
}
.ess-p-title {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -.005em;
  color: var(--ess-ink);
  margin: 0;
}
.ess-process-card p {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ess-muted);
  margin: 0;
}

/* ---------- 系統安全設計（深色強調） ---------- */
.ess-safety-wrap {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 64px;
  align-items: center;
}
.ess-safety-left .ess-eyebrow { color: #FCA5AA; margin-bottom: 18px; }
.ess-safety-left .ess-eyebrow .ess-bolt { background: var(--ess-yellow); }
.ess-safety-left h2 {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.16;
  letter-spacing: -.01em;
  margin: 0 0 22px;
  color: #fff;
}
.ess-safety-left p {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 16px;
  line-height: 1.95;
  color: #B3B6BD;
  margin: 0;
  max-width: 440px;
}
.ess-safety-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.ess-safety-card {
  background: var(--ess-ink-2);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--ess-radius);
  padding: 24px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform .25s ease, border-color .2s, background .2s;
}
.ess-safety-card:hover {
  transform: translateY(-4px);
  border-color: var(--ess-red);
  background: #1F2025;
}
.ess-safety-card .ess-s-ico {
  width: 46px; height: 46px;
  flex: none;
  border-radius: 12px;
  background: rgba(224,18,26,.16);
  display: grid; place-items: center;
  transition: background .25s ease;
}
.ess-safety-card:hover .ess-s-ico { background: var(--ess-red); }
.ess-safety-card .ess-s-ico .ess-bolt {
  width: 18px; height: 18px;
  background: var(--ess-red);
  transition: background .25s ease;
}
.ess-safety-card:hover .ess-s-ico .ess-bolt { background: #fff; }
.ess-safety-card p {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: #fff;
  margin: 0;
}

/* ---------- 工程實績（照片牆） ---------- */
.ess-gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 16px;
}
.ess-gallery-cell {
  position: relative;
  border-radius: var(--ess-radius);
  overflow: hidden;
  border: 1px solid var(--ess-border);
  background: #fff;
  box-shadow: var(--ess-shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.ess-gallery-cell:hover {
  transform: translateY(-4px);
  box-shadow: var(--ess-shadow-card-hover);
}
.ess-gallery-cell.wide { grid-column: span 2; }
.ess-gallery-cell.tall { grid-row: span 2; }
.ess-gallery-cell img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: none; /* 覆寫 Voltz main.css 全域 img max-height:100% */
  object-fit: cover;
}

/* ---------- 常見應用場域（4 卡） ---------- */
.ess-field-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.ess-field-card {
  position: relative;
  border-radius: var(--ess-radius-lg);
  overflow: hidden;
  border: 1px solid var(--ess-border);
  background: #fff;
  box-shadow: var(--ess-shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.ess-field-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ess-shadow-card-hover);
}
.ess-field-card > img {
  display: block;
  width: 100%;
  height: 200px;
  max-height: none; /* 覆寫 Voltz main.css 全域 img max-height:100% */
  object-fit: cover;
}
.ess-field-tag {
  padding: 20px 22px 22px;
}
.ess-field-tag .ess-num {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ess-red);
  display: block;
  margin-bottom: 8px;
}
.ess-field-tag .ess-name {
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 800;
  font-size: 18px;
  color: var(--ess-ink);
  line-height: 1.35;
  margin: 0 0 8px;
}
.ess-field-tag .ess-desc {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ess-muted);
  margin: 0;
}

/* ---------- RWD ---------- */
@media (max-width: 1180px) {
  .ess-value-grid { grid-template-columns: repeat(2, 1fr); }
  .ess-process-grid { grid-template-columns: repeat(2, 1fr); }
  .ess-field-grid { grid-template-columns: repeat(2, 1fr); }
  .ess-gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .ess-hero-grid,
  .ess-about-grid,
  .ess-svc-solution,
  .ess-safety-wrap { grid-template-columns: 1fr; gap: 36px; }
  .ess-hero-art img { height: 320px; }
  .ess-section { padding: 72px 0; }
}
@media (max-width: 720px) {
  .ess-value-grid,
  .ess-process-grid,
  .ess-field-grid,
  .ess-safety-grid,
  .ess-svc-checklist { grid-template-columns: 1fr; }
  .ess-gallery-grid { grid-template-columns: 1fr; grid-auto-rows: 220px; }
  .ess-gallery-cell.wide { grid-column: span 1; }
  .ess-gallery-cell.tall { grid-row: span 1; }
}