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

:root {
  --color-bg: #faf8f5;
  --color-bg-card: #ffffff;
  --color-text: #2c2c2c;
  --color-text-light: #6b6b6b;
  --color-accent: #8b5c3e;
  --color-accent-light: #b8926e;
  --color-border: #e5ddd4;
  --color-tag-red: #a0522d;
  --color-tag-brown: #6b4e3d;
  --color-tag-rose: #8b6969;
  --color-hero-bg: #f5f0ea;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-display: 'Playfair Display', 'Noto Serif SC', serif;
}

body {
  font-family: var(--font-serif);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-tag-brown);
}

/* ===== Header ===== */
.site-header {
  padding: 2.5rem 3rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.header-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.3rem;
}

.header-title {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.header-title .icon-shift {
  display: inline-block;
  background: var(--color-accent-light);
  color: white;
  border-radius: 6px;
  padding: 0 0.3rem;
  font-size: 1.8rem;
  vertical-align: middle;
  margin: 0 0.1rem;
}

.header-tagline {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0.4rem;
}

.header-right {
  text-align: right;
  padding-top: 1rem;
}

.header-issn {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
}

.header-motto {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.3rem;
}

/* ===== Navigation ===== */
.site-nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-nav ul {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0 3rem;
  gap: 0.3rem;
}

.site-nav li a {
  display: block;
  padding: 0.8rem 1.2rem;
  font-size: 0.92rem;
  color: var(--color-text-light);
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.site-nav li a:hover,
.site-nav li a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ===== Hero / Quote ===== */
.hero {
  max-width: 1100px;
  margin: 2.5rem auto;
  padding: 0 3rem;
  position: relative;
}

.hero-inner {
  background: var(--color-hero-bg);
  border-radius: 12px;
  padding: 3rem 3.5rem 2.5rem;
  border: 1px solid var(--color-border);
  position: relative;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.hero-quote {
  font-size: 1.15rem;
  color: var(--color-text);
  line-height: 2;
  position: relative;
  padding: 0 1rem;
}

.hero-quote strong {
  color: var(--color-accent);
}

.quote-mark {
  font-size: 2.5rem;
  color: var(--color-accent-light);
  line-height: 1;
  vertical-align: middle;
}

.quote-mark.open {
  margin-right: 0.3rem;
}

.quote-mark.close {
  margin-left: 0.3rem;
}

.hero-credit {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 1rem;
}

.hero-badge {
  position: absolute;
  bottom: -0.5rem;
  right: 4rem;
  background: var(--color-accent);
  color: white;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ===== Wave Divider ===== */
.wave-divider {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 3rem;
  height: 2rem;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 8px,
    var(--color-border) 8px,
    var(--color-border) 10px
  );
  opacity: 0.4;
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 30'%3E%3Cpath d='M0,15 Q150,0 300,15 T600,15 T900,15 T1200,15' fill='none' stroke='black' stroke-width='3'/%3E%3C/svg%3E");
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 30'%3E%3Cpath d='M0,15 Q150,0 300,15 T600,15 T900,15 T1200,15' fill='none' stroke='black' stroke-width='3'/%3E%3C/svg%3E");
  mask-size: 100% 100%;
  -webkit-mask-size: 100% 100%;
}

/* ===== Latest Section ===== */
.latest-section {
  max-width: 1100px;
  margin: 2rem auto 3rem;
  padding: 0 3rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.section-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
}

.browse-all {
  font-size: 0.9rem;
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
  padding: 0.4rem 1rem;
  border-radius: 6px;
  transition: all 0.2s;
}

.browse-all:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* ===== Article Cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: box-shadow 0.2s, transform 0.2s;
  border-top: 3px solid var(--color-border);
}

.card:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.card:nth-child(1) {
  border-top-color: var(--color-tag-red);
}

.card:nth-child(2) {
  border-top-color: var(--color-tag-brown);
}

.card:nth-child(3) {
  border-top-color: var(--color-tag-rose);
}

.card-tags {
  display: flex;
  gap: 0.5rem;
}

.tag {
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 600;
}

.tag-red {
  color: var(--color-tag-red);
  background: #fdf0e8;
}

.tag-brown {
  color: var(--color-tag-brown);
  background: #f0ebe6;
}

.tag-rose {
  color: var(--color-tag-rose);
  background: #f3eded;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.5;
}

.card-author {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.card-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-light);
  border-top: 1px solid var(--color-border);
  padding-top: 0.8rem;
  margin-top: 0.3rem;
}

/* ===== Card Links ===== */
.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.card-link:hover {
  color: inherit;
}

.card-link:nth-child(1) .card { border-top-color: var(--color-tag-red); }
.card-link:nth-child(2) .card { border-top-color: var(--color-tag-brown); }
.card-link:nth-child(3) .card { border-top-color: var(--color-tag-rose); }

/* ===== Article Page ===== */
.article-header {
  padding: 1.5rem 3rem;
}

.back-home {
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: inline-block;
  margin-bottom: 0.3rem;
}

.back-home:hover {
  color: var(--color-accent);
}

.article-page {
  max-width: 780px;
  margin: 2.5rem auto 3rem;
  padding: 0 3rem;
}

.article-meta-top {
  margin-bottom: 1rem;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1rem;
}

.article-info {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1.2rem;
  margin-bottom: 2rem;
}

.article-authors {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.article-date {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.3rem;
}

.article-body h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 0.8rem;
  color: var(--color-accent);
}

.article-body p {
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 1rem;
  color: var(--color-text);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-hero-bg);
  border-top: 1px solid var(--color-border);
  text-align: center;
  padding: 2rem 3rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.site-footer p + p {
  margin-top: 0.3rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
  }

  .header-right {
    text-align: left;
    padding-top: 0;
  }

  .site-nav ul {
    padding: 0 1.5rem;
  }

  .hero, .latest-section, .site-header {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .hero-inner {
    padding: 2rem;
  }

  .hero-title {
    font-size: 1.6rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }
}

@media (max-width: 600px) {
  .header-title {
    font-size: 2rem;
  }

  .site-nav li a {
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
  }
}