:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7f5;
  --color-text: #1a1a1a;
  --color-muted: #6b6b6b;
  --color-border: #e6e6e3;
  --color-navy: #14213d;
  --color-gold: #b8860b;
  --max-width: 960px;
  --radius: 6px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-navy);
  text-decoration: none;
}
a:hover { color: var(--color-gold); }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(6px);
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: none;
  padding: 0 40px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.02em;
}

.brand .brand-name { color: var(--color-navy); transition: color .15s ease; }
.brand .brand-name span { color: var(--color-gold); }
.brand:hover .brand-name { color: var(--color-gold); }
.brand-logo { height: 30px; width: auto; display: block; }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a.active,
.nav-links a:hover { color: var(--color-navy); border-bottom: 2px solid var(--color-gold); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-navy);
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.hero h1 {
  font-size: 2.4rem;
  margin: 0 0 16px;
  color: var(--color-navy);
  max-width: 640px;
}

.hero p {
  color: var(--color-muted);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 0 28px;
}

.hero-tagline-en {
  font-size: 0.95rem !important;
  letter-spacing: 0.03em;
  color: var(--color-gold) !important;
  font-weight: 600;
  font-style: italic;
  margin: -16px 0 28px !important;
}

.btn {
  display: inline-block;
  background: var(--color-navy);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background 0.2s ease;
}
.btn:hover { background: var(--color-gold); color: #fff; }

/* Section */
.section { padding: 72px 0; }
.section-title {
  font-size: 1.6rem;
  margin: 0 0 40px;
  color: var(--color-navy);
  border-left: 4px solid var(--color-gold);
  padding-left: 14px;
}

/* Post grid */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px;
}

.post-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  background: #fff;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.post-card:hover {
  box-shadow: 0 8px 24px rgba(20, 33, 61, 0.08);
  transform: translateY(-2px);
}

.post-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.post-tag {
  display: inline-block;
  background: var(--color-bg-alt);
  color: var(--color-navy);
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 999px;
  margin-right: 8px;
  border: 1px solid var(--color-border);
}

.post-card h3 {
  margin: 12px 0 10px;
  font-size: 1.15rem;
  color: var(--color-text);
}

.post-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin: 0 0 16px;
}

.read-more { font-weight: 600; font-size: 0.9rem; }

/* Blog toolbar: search + filter */
.blog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}

.blog-search {
  position: relative;
  flex: 1 1 260px;
  max-width: 360px;
}
.blog-search input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
}
.blog-search input:focus {
  outline: none;
  border-color: var(--color-gold);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.filter-btn {
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.85rem;
  padding: 7px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.filter-btn:hover { border-color: var(--color-gold); }
.filter-btn.active {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}

.no-results {
  color: var(--color-muted);
  font-size: 0.95rem;
  padding: 24px 0;
  display: none;
}

/* Newsletter block */
.newsletter {
  background: var(--color-navy);
  color: #fff;
  border-radius: var(--radius);
  padding: 48px 40px;
  margin-top: 8px;
}
.newsletter h2 {
  color: #fff;
  font-size: 1.5rem;
  margin: 0 0 12px;
}
.newsletter p {
  color: #c8ccd6;
  font-size: 0.98rem;
  max-width: 520px;
  margin: 0 0 24px;
}
.newsletter-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.newsletter-form input {
  flex: 1 1 240px;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
}
.newsletter-form input:focus { outline: 2px solid var(--color-gold); }
.newsletter-form button {
  background: var(--color-gold);
  color: #fff;
  border: none;
  padding: 12px 26px;
  border-radius: var(--radius);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.newsletter-form button:hover { filter: brightness(1.08); }
.newsletter-note {
  font-size: 0.82rem;
  color: #9aa0ad;
  margin: 14px 0 0;
}

/* Social links */
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.social-links a {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-navy);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.social-links a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* Hero with photo */
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-photo {
  border-radius: 200px 200px var(--radius) var(--radius);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(20, 33, 61, 0.15);
  aspect-ratio: 1000 / 1762;
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center; }

@media (max-width: 720px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-photo { max-width: 320px; margin: 0 auto; }
}

/* Article page */
.article-header {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}
.article-header h1 {
  font-size: 2rem;
  color: var(--color-navy);
  margin: 12px 0 16px;
  max-width: 720px;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px;
}

/* 全站禁止選取文字（表單輸入框除外，以免影響填寫） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}
.article-body h2 {
  color: var(--color-navy);
  margin-top: 40px;
}
.article-body p { margin: 0 0 20px; }
.article-body blockquote {
  border-left: 3px solid var(--color-gold);
  margin: 32px 0;
  padding: 8px 24px;
  color: var(--color-muted);
  font-style: italic;
  background: var(--color-bg-alt);
}
.article-body ul { padding-left: 20px; margin-bottom: 20px; }

/* 文章內文超連結：深藍＋底線，hover 變金色 */
.article-body p a,
.article-body li a {
  color: #15498f;
  text-decoration: none;
  transition: color .15s ease;
}
.article-body p a:hover,
.article-body li a:hover { color: var(--color-gold); }

.back-link { display: inline-block; margin-bottom: 24px; font-size: 0.9rem; }

/* 上一篇 / 下一篇 導覽 */
.post-nav {
  display: flex;
  gap: 16px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}
.post-nav a {
  flex: 1 1 0;
  min-width: 0;
  display: block;
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-alt);
  transition: border-color .15s, background .15s;
}
.post-nav a:hover {
  border-color: var(--color-gold);
  background: #fff;
}
.post-nav .nav-dir {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 6px;
}
.post-nav .nav-title {
  color: var(--color-navy);
  font-weight: 600;
  line-height: 1.5;
}
.post-nav a:hover .nav-title { color: var(--color-gold); }
.post-nav .nav-next { text-align: right; }
@media (max-width: 560px) {
  .post-nav { flex-direction: column; }
  .post-nav .nav-next { text-align: left; }
}

/* About / Contact */
.plain-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 72px 24px;
}
.plain-page h1 { color: var(--color-navy); margin-bottom: 20px; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 32px;
}
.contact-form label {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  display: block;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: 0.85rem; color: var(--color-muted); margin-top: 8px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-navy);
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.footer-social a:hover {
  color: #fff;
  background: var(--color-navy);
  border-color: var(--color-navy);
}
.footer-social svg { display: block; }

/* Responsive */
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .hero h1 { font-size: 1.8rem; }
  .article-header h1 { font-size: 1.5rem; }
}