/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #2d7a5f;
  --primary-dark: #1a5240;
  --primary-light: #5fa888;
  --accent: #c8893d;
  --accent-dark: #a06d28;
  --bg: #f3f7f0;
  --bg-alt: #e4ecdf;
  --card: #ffffff;
  --text: #2a2520;
  --text-soft: #5a5048;
  --text-muted: #8a7e72;
  --border: #d8e0d2;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "Times New Roman", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--primary-dark); text-decoration: underline; }

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(243, 247, 240, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: all 0.3s ease;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--serif); font-size: 18px; font-weight: 700;
  color: var(--primary-dark); letter-spacing: 0.5px;
}
.nav-logo .latin {
  display: block; font-family: var(--sans); font-size: 11px;
  font-style: italic; font-weight: 400; color: var(--text-muted);
  margin-top: 2px; letter-spacing: 0;
}
.nav-menu { display: flex; gap: 28px; list-style: none; }
.nav-menu a {
  font-size: 14px; color: var(--text-soft); font-weight: 500;
  position: relative; padding: 4px 0;
}
.nav-menu a:hover { color: var(--primary-dark); text-decoration: none; }
.nav-menu a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 2px; background: var(--primary-dark);
  transition: width 0.3s ease;
}
.nav-menu a:hover::after { width: 100%; }
.nav-toggle {
  display: none; background: none; border: none;
  font-size: 22px; color: var(--primary-dark); cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 92vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; padding-top: 60px;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url("images/image_1.jpeg");
  background-size: cover; background-position: center;
  filter: brightness(0.5) saturate(1.1);
  z-index: 0;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg,
    rgba(26, 50, 35, 0.3) 0%,
    rgba(45, 100, 80, 0.55) 60%,
    rgba(26, 50, 35, 0.85) 100%
  );
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  color: #fff; padding: 0 24px; max-width: 900px;
}
.hero-tag {
  display: inline-block; padding: 6px 18px;
  border: 1px solid rgba(255,255,255,0.4); border-radius: 999px;
  font-size: 12px; letter-spacing: 3px; font-weight: 500;
  margin-bottom: 24px; text-transform: uppercase; backdrop-filter: blur(4px);
}
.hero-title {
  font-family: var(--serif); font-size: clamp(40px, 7vw, 76px);
  font-weight: 700; letter-spacing: 4px; margin-bottom: 12px;
  line-height: 1.1; text-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.hero-pinyin {
  font-size: clamp(14px, 2vw, 18px); letter-spacing: 2px;
  font-style: italic; opacity: 0.85; margin-bottom: 8px;
}
.hero-latin {
  font-family: var(--sans); font-size: clamp(16px, 2.2vw, 22px);
  font-style: italic; font-weight: 300; opacity: 0.92; margin-bottom: 32px;
}
.hero-divider {
  width: 60px; height: 2px; background: rgba(255,255,255,0.6);
  margin: 24px auto 32px;
}
.hero-meta { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.hero-meta-item {
  background: rgba(255,255,255,0.12); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2); border-radius: 12px;
  padding: 10px 18px; font-size: 13px;
}
.hero-meta-item strong {
  display: block; font-size: 11px; letter-spacing: 1.5px;
  text-transform: uppercase; opacity: 0.75; margin-bottom: 4px; font-weight: 500;
}
.hero-meta-item span {
  font-family: var(--serif); font-size: 16px; font-weight: 600; letter-spacing: 1px;
}
.hero-scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  z-index: 2; color: rgba(255,255,255,0.7); font-size: 11px;
  letter-spacing: 3px; text-transform: uppercase; text-align: center;
  animation: float 2.4s ease-in-out infinite;
}
.hero-scroll::after {
  content: ""; display: block; width: 1px; height: 30px;
  background: rgba(255,255,255,0.5); margin: 8px auto 0;
}
@keyframes float {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ===== Container & Sections ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; position: relative; }
section + section { border-top: 1px solid var(--border); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block; font-size: 12px; letter-spacing: 4px;
  text-transform: uppercase; color: var(--primary-dark); font-weight: 600;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--serif); font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700; color: var(--text); letter-spacing: 2px;
  margin-bottom: 16px; position: relative; display: inline-block;
}
.section-title::before, .section-title::after {
  content: ""; position: absolute; top: 50%; width: 30px; height: 1px;
  background: var(--primary-light);
}
.section-title::before { right: calc(100% + 16px); }
.section-title::after { left: calc(100% + 16px); }
.section-subtitle {
  font-size: 15px; color: var(--text-muted); max-width: 640px; margin: 0 auto;
}

/* ===== Profile Cards ===== */
.profile-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px;
}
.profile-card {
  background: var(--card); border-radius: 16px; padding: 28px 24px;
  border: 1px solid var(--border); transition: all 0.3s ease;
  position: relative; overflow: hidden;
}
.profile-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 0;
  background: var(--primary); transition: height 0.3s ease;
}
.profile-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(26, 82, 64, 0.25);
  border-color: var(--primary-light);
}
.profile-card:hover::before { height: 100%; }
.profile-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 22px; margin-bottom: 18px;
}
.profile-card h3 {
  font-family: var(--serif); font-size: 18px; font-weight: 700;
  margin-bottom: 4px; color: var(--text);
}
.profile-card .latin {
  font-size: 12px; color: var(--text-muted); font-style: italic; margin-bottom: 14px;
}
.profile-card p { font-size: 14px; color: var(--text-soft); line-height: 1.7; }

/* ===== Info Table ===== */
.info-block {
  background: var(--bg-alt); border-radius: 16px; padding: 36px; margin-top: 40px;
}
.info-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px;
}
.info-item { display: flex; flex-direction: column; gap: 6px; }
.info-label {
  font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--text-muted); font-weight: 600;
}
.info-value {
  font-family: var(--serif); font-size: 18px; font-weight: 600; color: var(--text);
}

/* ===== Detail Sections ===== */
.detail-block {
  background: var(--card); border-radius: 16px; padding: 36px;
  margin-bottom: 24px; border: 1px solid var(--border); border-left: 4px solid var(--primary);
}
.detail-block h3 {
  font-family: var(--serif); font-size: 22px; font-weight: 700;
  margin-bottom: 18px; color: var(--primary-dark);
  display: flex; align-items: center; gap: 12px;
}
.detail-block h3::before {
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--primary-dark); border-radius: 50%;
}
.detail-block p { font-size: 15px; color: var(--text-soft); line-height: 1.85; margin-bottom: 12px; }
.detail-block p:last-child { margin-bottom: 0; }
.detail-block .meta-list { list-style: none; margin-top: 8px; }
.detail-block .meta-list li {
  padding: 10px 0; border-bottom: 1px dashed var(--border);
  font-size: 14px; display: flex; gap: 16px;
}
.detail-block .meta-list li:last-child { border-bottom: none; }
.detail-block .meta-list .key {
  flex-shrink: 0; width: 110px; font-weight: 600; color: var(--primary-dark);
}

/* ===== Image Gallery ===== */
.gallery {
  display: grid; grid-template-columns: 1fr; gap: 24px; margin: 60px 0;
}
.gallery-item {
  position: relative; border-radius: 16px; overflow: hidden;
  aspect-ratio: 16/9;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.2);
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-caption {
  position: absolute; bottom: 0; left: 0; right: 0; padding: 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: white; font-size: 13px; letter-spacing: 1px;
}
.gallery-caption strong {
  display: block; font-size: 15px; margin-bottom: 4px; font-family: var(--serif);
}

/* ===== References ===== */
.refs { background: var(--bg-alt); border-radius: 16px; padding: 36px; }
.refs h3 {
  font-family: var(--serif); font-size: 22px; margin-bottom: 20px;
  color: var(--primary-dark); display: flex; align-items: center; gap: 12px;
}
.refs h3::before {
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--primary-dark); border-radius: 50%;
}
.refs ol { padding-left: 24px; }
.refs li {
  font-size: 13.5px; color: var(--text-soft); line-height: 1.7;
  margin-bottom: 10px; word-break: break-word;
}

/* ===== Footer ===== */
.footer {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-dark));
  color: rgba(255,255,255,0.85); padding: 60px 0 30px; text-align: center;
}
.footer-logo {
  font-family: var(--serif); font-size: 24px; font-weight: 700;
  color: white; margin-bottom: 12px; letter-spacing: 3px;
}
.footer-tagline { font-size: 14px; opacity: 0.75; margin-bottom: 30px; letter-spacing: 1px; }
.footer-links { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }
.footer-links a { color: rgba(255,255,255,0.75); font-size: 13px; transition: color 0.2s; }
.footer-links a:hover { color: white; text-decoration: none; }
.footer-divider { width: 60px; height: 1px; background: rgba(255,255,255,0.3); margin: 0 auto 24px; }
.footer-copy { font-size: 12px; opacity: 0.6; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .article { padding: 32px 28px; }
  .info-block, .refs { padding: 24px; }
  .detail-block { padding: 24px; }
}
@media (max-width: 720px) {
  .nav-menu {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--bg); padding: 16px 24px;
    border-bottom: 1px solid var(--border); gap: 14px;
  }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: block; }
  section { padding: 70px 0; }
  .section-header { margin-bottom: 40px; }
  .info-block { padding: 20px; }
  .section-title::before, .section-title::after { display: none; }
  .hero { min-height: 80vh; }
}
@media (max-width: 480px) {
  .hero-meta-item { padding: 8px 12px; font-size: 12px; }
  .hero-meta-item span { font-size: 14px; }
  .detail-block .meta-list .key { width: 90px; font-size: 13px; }
}