@import url('https://fonts.googleapis.com/css2?family=Heebo:wght@300;400;700&display=swap');

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 130px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  color: var(--color-text);
  line-height: var(--line-height-body);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  line-height: var(--line-height-heading);
  font-weight: var(--font-weight-bold);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h3); }

p {
  margin-bottom: var(--space-md);
  line-height: var(--line-height-body);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container--narrow {
  max-width: var(--container-narrow);
  padding-left: 60px;
  padding-right: 60px;
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  padding: var(--space-section) 0;
}

.section--gray {
  background-color: var(--color-bg-light);
}

.section__title {
  text-align: center;
  margin-bottom: 40px;
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-light);
  max-width: 700px;
  margin: calc(-1 * var(--space-xl)) auto var(--space-3xl);
  font-size: var(--font-size-body);
}

.text-center { text-align: center; }
.text-white { color: var(--color-white); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 57px;
  min-width: 156px;
  padding: 0 36px;
  border-radius: var(--radius-button);
  font-size: var(--font-size-btn);
  font-weight: var(--font-weight-normal);
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  text-align: center;
  line-height: 1;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn--white {
  background-color: var(--color-white);
  color: var(--color-primary);
}

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

@media (max-width: 768px) {
  h1 { font-size: var(--font-size-h1); }
  h2 { font-size: var(--font-size-h2); }
  h3 { font-size: var(--font-size-h3); }
}

/* ===== IMAGE FALLBACK PLACEHOLDER ===== */
/* 只在破圖時才套灰底 — 避免透明 PNG (logo) 出現灰色背景 */
img.img-fallback {
  background-color: #E8EBEF;
  border: 1px dashed #C5CBD3;
  position: relative;
  min-height: 120px;
  object-fit: contain;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 120'><rect width='200' height='120' fill='%23E8EBEF'/><g fill='none' stroke='%239AA3AD' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'><rect x='60' y='40' width='80' height='50' rx='4'/><circle cx='100' cy='65' r='12'/><path d='M85 40l4-6h22l4 6'/></g><text x='100' y='108' font-family='Arial,sans-serif' font-size='10' fill='%239AA3AD' text-anchor='middle'>Image unavailable</text></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: min(200px, 60%);
}

/* 背景圖容器 fallback — 失去 background-image 時仍有灰底 */
.hero {
  background-color: #E8EBEF;
}

/* ===== Mobile overflow safety net ===== */
@media (max-width: 768px) {
  html, body {
    overflow-x: hidden;
    max-width: 100vw;
  }
  img, video, iframe, table {
    max-width: 100%;
  }
}