/*  全站 Reset + 變數設定 */
:root {
  --primary-color: #525252;
  --secondary-color: #005371;
  --bg-color: #f4f4f4;
  --text-color: #000;
  --muted-text: #c4c4c4;
  --border-color: #e5e7eb;

  --dark-bg: #000;
  --dark-text: #ffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
  }
}
/* 預設字體大小：PC/Desktop */
h1 { font-size: 48px; }
h2 { font-size: 36px; }
h3 { font-size: 28px; }
h4 { font-size: 24px; }
h5 { font-size: 20px; }
h6 { font-size: 16px; }
/* 平板字體大小調整 */
@media (max-width: 1024px) {
  h1 { font-size: 40px; }
  h2 { font-size: 32px; }
  h3 { font-size: 26px; }
  h4 { font-size: 22px; }
  h5 { font-size: 18px; }
  h6 { font-size: 16px; }
}
/* 手機字體大小調整 */
@media (max-width: 768px) {
  h1 { font-size: 32px; }
  h2 { font-size: 28px; }
  h3 { font-size: 24px; }
  h4 { font-size: 20px; }
  h5 { font-size: 16px; }
  h6 { font-size: 14px; }
}
@font-face {
  font-family: "CustomFont";
  src: url("fonts/CustomFont.ttf") format("woff2");
  /* , */
        /* url("fonts/my-custom-font.woff") format("woff"); */
  font-weight: normal;
  font-style: normal;
}
----------------------------
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body, h1, h2, h3, h4, h5, h6,
p, a, blockquote, pre,
dl, dd, ol, ul, figure,
form, fieldset, legend,
input, textarea, select, button,
label, summary {
  margin: 0;
  padding: 0;
  /* font: inherit; */
  /* vertical-align: baseline; */
  color: inherit;
  text-decoration: none;
  /* line-height: inherit; */
  /* background: transparent; */
  border: 0;
  box-sizing: border-box;
}
body {
  font-family: "CustomFont", system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1;

  width: 98%;
  margin: auto;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  cursor: default;
}
html {
  scroll-behavior: smooth;
}
li {
  list-style: none;
}
/* navbar */
.navbar {
  display: flex;
  margin: auto;
  height: 60px;
  width: 100%;
  border-bottom: 1px solid var(--text-color);
  align-items: center;
}
.navbar-text {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: end;
  justify-content: center;
  position: relative;
}
.navbar-text h1 {
  font-size: 36px;
  background-color: var(--dark-bg);
  color: var(--dark-text);
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.navbar-text small {
  position: absolute;
  left: 0;
  bottom: calc((100% - 36px) / 2);
}
.navbar-text a {
  position: absolute;
  right: 0;
  bottom: calc((100% - 36px) / 2);
  display: flex;
  align-items: center;
}
.navbar-text a::before {
  content: "";
  display: inline-block;
  height: 1px;
  width: 0;
  margin-right: 10px;
  transition: all 1s;
}
.navbar-text a:hover::before {
  width: 3rem;
  background-color: var(--text-color);
}

/* header */
.header-area {
  height: 6rem;
  display: flex;
  align-items: end;
}
/* service-area */
.main-section {
  border-top: 1px solid var(--text-color);
  border-bottom: 1px solid var(--text-color);
  height: 50vh;
  display: flex;
  flex-direction: row;
  width: 100%;
  padding: 1rem 0;
}
.tab-panel {
  display: flex;
  height: 100%;
  width: 150px;
  flex: 1.2;
}
.service-tabs {

}
.service-tabs li {
  line-height: 1;
  position: relative; 
}

.content {
  flex: 2;
  height: 100%;
  width: 100%;
  margin-left: auto;
  display: flex;
}
.content-panel {
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;

  opacity: 0;
  transform: translateY(20px);
  /* transition: opacity 0.5s ease-out, transform 0.5s ease-out; */
  transition: all .5s ease-in;
}
.content-panel.visible {
  opacity: 1;
  transform: translateY(0); /* 恢復位置 */
}
.content-image {
  aspect-ratio: 1 / 1;
  height: 100%;
  border: 1px solid #000;
  flex-shrink: 0
}
.item-image {
  height: 100%;
  width: 100%;
  object-fit: cover;
}
.content-item-num {
  margin: 0 1rem;
}
.content-item-num h3 {
  font-weight: 300;
  font-size: 12px;
}
.content-discription {
  margin-left: auto;
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  align-items: end;
  gap: 10px;
}
.item-title {
  font-weight: bold;
}
.service-tabs li {
  color: var(--primary-color);
  cursor: default;
  transition: all 1s;
  position: relative;
  padding-bottom: 2px;
}
.service-tabs li::before {
  color: var(--primary-color);
  content: "/ ";
  color: #00000000;
  transition: all 1s;
  transform: translateX(-100%);
  display: none;
}
.service-tabs li::after {
  content: "";
  position: absolute;
  right: -20;
  width: 0;
  height: 1px;
  top: 50%;
  transform: translate(100% -50%) scaleX(0);
  background-color: var(--primary-color);
  transition: all 1s ease;
}
/* .service-tabs li:hover {
  
} */
.service-tabs li.active {
  color: var(--text-color);
  transition: all 1s ease;
}
.service-tabs li.active::before {
  color: var(--text-color);
  content: "/ ";
  display:contents
}
.service-tabs li.active::after {
  content: "";
  position: absolute;
  right: -5px;
  top: 50%;
  width: 50px;
  height: 1px;
  transform: translate(100%, -50%) scaleX(1);
  background-color: var(--text-color);
  transition: transform .8s ease, width 0.3s ease;
}
.service-tabs li:hover::before {
  content: "/ ";
  color: var(--primary-color);
  transform: translateX(0);
  display: contents;
}
.subservice-tabs li.active {
  background: #444;
  color: #fff;
}
/* span */
.service-tabs li .intro-discrip {
  position: absolute;
  right: -50%;
  top: 0;
  transform: translateX(100%);
  display: none;
  line-height: 1.3;
  width: 100px;
  opacity: 0;
  /* transition: right .5s ease opacity .5s ease; */
  transition: width 1s ease;
  transition: all 1.5s;
}
.service-tabs li.active .intro-discrip {
  position: absolute;
  right: -70%;
  top: 0;
  transform: translateX(100%);
  color: var(--text-color);
  font-size: 14px;
  width: 200px;
  display: inline-block;
  opacity: 1;
  transition: all 1.5s ease;
}









/* item */
.subservice-group {
  display: flex;
  justify-content: end;
  height: 25vh;
  padding-top: 1rem;
}

.subservice-tabs {
  display: none;
  gap: 10px;
  height: 100%;
}
.subservice-tabs.active {
  display: flex; 
}
/* .item-img {

} */
.product-item {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.placeholder-x {
  position: relative;
  inset: 0;
  width: 10vw;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--text-color);
}
.placeholder-x::before,
.placeholder-x::after {
  content: '';
  position: absolute;
  width: 1px;
  height: 140%;
  background-color: #000000;
  top: -20%;
  left: 50%;
  transform-origin: center;
}
.placeholder-x::before {
  transform: rotate(45deg);
}
.placeholder-x::after {
  transform: rotate(-45deg);
}
.item-num {
  margin: 0 0 1rem 0;
}