/* --- Global Styles --- */
:root {
    --primary-blue: #007bff;
    --secondary-blue: #0056b3;
    --dark-bg: #1a1a1a;
    --dark-gray: #333;
    --light-gray: #f4f4f4;
    --text-color: #333;
    --light-text: #fff;
    --heading-font: 'Arial', sans-serif;
    --body-font: 'Arial', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--body-font);
    color: var(--text-color);
    line-height: 1.6;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4, h5 {
    font-family: var(--heading-font);
    font-weight: bold;
    margin-bottom: 10px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

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

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

.btn-secondary {
    background-color: var(--secondary-blue);
    color: var(--light-text);
    border: 2px solid var(--secondary-blue);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--light-text);
    border: 2px solid var(--light-text);
}

.btn-outline:hover {
    background-color: var(--light-text);
    color: var(--dark-bg);
}

/* --- Header --- */
header {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 15px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-icon-placeholder {
/* 旧样式，可删除或注释掉 */
/* .logo-icon-placeholder { ... } */

/* 新样式，用于图片 Logo */
.logo-icon {
  width: 48px;    /* 这是Logo的宽度，和原来的“P”大小一致 */
  height: 48px;   /* 高度和宽度保持一致，防止变形 */
  margin-right: 15px; /* 这是Logo和旁边“PPCHK”文字的间距 */
  object-fit: contain; /* 这个属性很重要，保证Logo不变形 */
}

.logo-text h1 {
    font-size: 20px;
    margin-bottom: 0;
}

.logo-text small {
    font-size: 12px;
    opacity: 0.8;
}

nav ul {
    display: inline-flex;
    margin-right: 20px;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    font-size: 14px;
    font-weight: bold;
    text-transform: uppercase;
}

nav ul li a:hover {
    color: var(--primary-blue);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    background-image: url('hero-bg.jpg'); /* 替換為您的英雄背景圖像 */
    background-size: cover;
    background-position: center;
    color: var(--light-text);
    padding: 100px 0;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* --- Main Content Sections --- */
section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
}

/* --- Capabilities --- */
.cap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cap-item {
    background-color: var(--light-gray);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.cap-icon-placeholder {
    width: 60px;
    height: 60px;
    background-color: #fff;
    border: 2px solid #ddd;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    margin: 0 auto 20px auto;
}

.cap-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
}

.cap-item p {
    font-size: 14px;
    color: #555;
}

/* --- Industries --- */
.ind-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.ind-item {
    background-color: #fff;
    border: 1px solid #eee;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.ind-icon-placeholder {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    color: var(--light-text);
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    margin: 0 auto 20px auto;
}

.ind-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
}

.ind-item p {
    font-size: 14px;
    color: #555;
}

/* --- R&D to Mass Production --- */
.rd-to-mass {
    text-align: center;
}

/* --- Footer --- */
footer {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 60px 0;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.footer-col h5 {
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-col p {
    font-size: 14px;
    margin-bottom: 10px;
    color: #bbb;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    font-size: 14px;
    color: #bbb;
}

.footer-col ul li a:hover {
    color: var(--primary-blue);
}

.footer-col.social .social-icons {
    display: flex;
    gap: 10px;
}

.social-icons a {
    width: 30px;
    height: 30px;
    background-color: #555;
    color: var(--light-text);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 5px;
}

.social-icons a:hover {
    background-color: var(--primary-blue);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    margin-top: 40px;
    text-align: center;
    font-size: 12px;
    color: #888;
}

/* 全局容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

/* Hero 区域样式（和首页一致） */
.hero {
  background-color: #444;
  color: white;
  padding: 60px 0;
  text-align: center;
}
.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}
.hero p {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
}

/* 联系页面网格布局 */
.contact-section {
  padding: 60px 0;
  background-color: #f9f9f9;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 15px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
}
.contact-form button {
  width: auto;
}

/* 按钮样式（和首页一致） */
.btn-primary {
  background-color: #007bff;
  color: white;
  padding: 12px 30px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
}

/* 头部容器：让 Logo 和导航栏在一行 */
header .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between; /* Logo 左，导航栏右 */
  align-items: center; /* 垂直居中 */
}

/* Logo 区域：图片和文字并排 */
.logo {
  display: flex;
  align-items: center;
  gap: 15px; /* Logo 和文字的间距 */
}

/* Logo 图片大小 */
.logo-icon {
  width: 48px;
  height: 48px;
  object-fit: contain; /* 防止变形 */
}

/* Logo 文字样式 */
.logo-text h1 {
  font-size: 1.5rem;
  margin: 0;
  color: #fff;
}
.logo-text small {
  font-size: 0.85rem;
  color: #ddd;
}

/* 导航栏：菜单项横向排列 */
nav ul {
  list-style: none;
  display: flex;
  gap: 25px; /* 菜单项之间的间距，解决挤在一起的问题 */
  margin: 0;
  padding: 0;
}
nav ul li a {
  text-decoration: none;
  color: #fff;
  font-size: 1rem;
  font-weight: 500;
}
nav ul li a:hover {
  color: #007bff; /* 鼠标 hover 变色 */
}