/* ==========================================================================
   我是崇雅人 (IMCYER) · 校园时光记忆专题页核心样式表
   Design System: 崇雅红 · 雅正金 · 经典黑白校服对撞 · 人文书香美学
   ========================================================================== */

:root {
  --cy-red: #8C1D24;
  --cy-red-dark: #5C1015;
  --cy-red-light: #B82832;
  --cy-gold: #C5A059;
  --cy-gold-light: #E0C17E;
  --cy-gold-dark: #9E7B35;
  --cy-black: #121417;
  --cy-dark-card: #1A1D22;
  --cy-gray-dark: #2A2E35;
  --cy-gray-mid: #555B66;
  --cy-gray-light: #8E95A3;
  --cy-bg-warm: #F8F7F3;
  --cy-bg-card: #FFFFFF;
  --cy-border: #E5E2D9;
  --cy-text-main: #1D2129;
  --cy-text-muted: #6B7280;

  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(140, 29, 36, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

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

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

button, input, select, textarea {
  font-family: inherit;
}

/* ==========================================================================
   页面顶部导航栏
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(248, 247, 243, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(197, 160, 89, 0.25);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(18, 20, 23, 0.96);
  color: #FFFFFF;
  border-bottom: 1px solid rgba(197, 160, 89, 0.4);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.navbar.scrolled .nav-links a {
  color: #D1D5DB;
}

.navbar.scrolled .nav-links a:hover {
  color: var(--cy-gold-light);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.brand-crest {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--cy-red), var(--cy-red-dark));
  color: var(--cy-gold-light);
  border: 1.5px solid var(--cy-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(140, 29, 36, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-sub {
  font-size: 0.68rem;
  letter-spacing: 1.5px;
  color: var(--cy-gold-dark);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  font-size: 0.88rem;
  color: var(--cy-gray-dark);
  font-weight: 500;
  position: relative;
  padding: 0.25rem 0;
  white-space: nowrap;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--cy-red);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a:hover {
  color: var(--cy-red);
}

.nav-action {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-play-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  background: linear-gradient(135deg, var(--cy-red), var(--cy-red-light));
  color: #FFFFFF;
  border: 1px solid rgba(197, 160, 89, 0.6);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(140, 29, 36, 0.25);
  transition: var(--transition);
}

.nav-play-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(140, 29, 36, 0.35);
  background: var(--cy-red-light);
}

.nav-play-btn.playing {
  background: linear-gradient(135deg, var(--cy-gold-dark), var(--cy-gold));
  color: #121417;
  border-color: #FFFFFF;
}

/* ==========================================================================
   首屏英雄区 (Hero Section)
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 7.5rem 1.5rem 5rem;
  background: radial-gradient(circle at 50% 30%, #301015 0%, #15171B 75%, #0D0E10 100%);
  color: #FFFFFF;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(rgba(197, 160, 89, 0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 29, 36, 0.2) 0%, rgba(18, 20, 23, 0.9) 100%);
  background-size: 32px 32px, 100% 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 960px;
  margin: 0 auto;
}

.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.25rem;
  background: rgba(197, 160, 89, 0.12);
  border: 1px solid rgba(197, 160, 89, 0.4);
  border-radius: 30px;
  color: var(--cy-gold-light);
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin-bottom: 1.75rem;
  backdrop-filter: blur(8px);
}

.hero-badge-tag .dot {
  width: 6px;
  height: 6px;
  background-color: var(--cy-gold);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--cy-gold);
}

.hero-main-title {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.title-sub {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.8vw, 1.45rem);
  font-weight: 400;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.88);
}

.title-core {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7.5vw, 5.5rem);
  font-weight: 900;
  letter-spacing: 6px;
  background: linear-gradient(180deg, #FFFFFF 20%, #F5D38A 80%, #C5A059 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

/* 优化后的诗联容器：对称对仗，杜绝断句换行 */
.hero-couplet-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin: 1rem auto 1.5rem;
  padding: 0.75rem 2rem;
  max-width: 800px;
  border-left: 2px solid var(--cy-gold);
  border-right: 2px solid var(--cy-gold);
  background: rgba(197, 160, 89, 0.05);
  border-radius: 4px;
}

.couplet-line {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  color: var(--cy-gold-light);
  line-height: 1.6;
  white-space: nowrap;
}

.hero-intro {
  font-size: clamp(0.92rem, 1.8vw, 1.05rem);
  color: #CBD5E1;
  max-width: 760px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  font-weight: 300;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 30px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cy-red), var(--cy-red-light));
  color: #FFFFFF;
  box-shadow: 0 6px 20px rgba(184, 40, 50, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(184, 40, 50, 0.6);
  background: var(--cy-red-light);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border: 1px solid rgba(197, 160, 89, 0.5);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(197, 160, 89, 0.2);
  color: var(--cy-gold-light);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--cy-gold-dark), var(--cy-gold));
  color: #121417;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(197, 160, 89, 0.35);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(197, 160, 89, 0.5);
  background: var(--cy-gold-light);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 1.5rem 2rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  max-width: 880px;
  margin: 0 auto;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--cy-gold-light);
}

.stat-desc {
  font-size: 0.8rem;
  color: #94A3B8;
  letter-spacing: 0.5px;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.15);
}

.scroll-down-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  letter-spacing: 2px;
  transition: var(--transition);
}

.scroll-down-hint:hover {
  color: var(--cy-gold-light);
}

.arrow-down {
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0) rotate(45deg); }
  40% { transform: translateY(8px) rotate(45deg); }
  60% { transform: translateY(4px) rotate(45deg); }
}

/* ==========================================================================
   通用的章节布局规范
   ========================================================================== */
.section-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 5.5rem 1.5rem;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--cy-red);
  background: rgba(140, 29, 36, 0.08);
  padding: 0.35rem 1rem;
  border-radius: 20px;
  margin-bottom: 0.85rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--cy-text-main);
  margin-bottom: 0.85rem;
  letter-spacing: 1px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--cy-gray-mid);
  max-width: 720px;
  margin: 0 auto;
}

/* ==========================================================================
   第一章：校歌典藏与诗卷展台
   ========================================================================== */
.anthem-grid {
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
  align-items: stretch;
}

.anthem-player-card {
  background: #181A1F;
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(197, 160, 89, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.anthem-player-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cy-red), var(--cy-gold), var(--cy-red));
}

.vinyl-display {
  position: relative;
  width: 220px;
  height: 220px;
  margin-bottom: 2rem;
}

.vinyl-record {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle, #252830 0%, #111215 70%, #0A0A0C 100%);
  box-shadow: 0 10px 30px rgba(0,0,0,0.6), inset 0 0 15px rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.vinyl-record.spinning {
  animation: spinRecord 16s linear infinite;
}

@keyframes spinRecord {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.vinyl-grooves {
  position: absolute;
  width: 90%;
  height: 90%;
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,0.08);
  box-shadow: 
    0 0 0 8px rgba(255,255,255,0.02),
    0 0 0 18px rgba(255,255,255,0.015),
    0 0 0 28px rgba(255,255,255,0.02);
}

.vinyl-cover {
  width: 95px;
  height: 95px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--cy-gold);
  z-index: 2;
  box-shadow: 0 0 10px rgba(197, 160, 89, 0.4);
}

.vinyl-center-hole {
  position: absolute;
  width: 14px;
  height: 14px;
  background: #181A1F;
  border: 2px solid var(--cy-gold-light);
  border-radius: 50%;
  z-index: 3;
}

.vinyl-arm {
  position: absolute;
  top: -15px;
  right: 10px;
  width: 55px;
  height: 100px;
  border-right: 4px solid #C0C0C0;
  border-top: 4px solid #C0C0C0;
  border-top-right-radius: 25px;
  transform-origin: top right;
  transform: rotate(-30deg);
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 5;
  pointer-events: none;
}

.vinyl-arm::after {
  content: '';
  position: absolute;
  bottom: -6px;
  right: -8px;
  width: 12px;
  height: 18px;
  background: var(--cy-gold);
  border-radius: 2px;
}

.vinyl-arm.playing {
  transform: rotate(6deg);
}

.audio-control-panel {
  width: 100%;
}

.song-meta {
  text-align: center;
  margin-bottom: 1.25rem;
}

.song-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: #FFFFFF;
  margin-bottom: 0.35rem;
}

.song-artists {
  font-size: 0.82rem;
  color: var(--cy-gold-light);
}

.progress-bar-wrap {
  width: 100%;
  padding: 0.5rem 0;
  cursor: pointer;
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.15);
  border-radius: 3px;
  position: relative;
}

.progress-bar-current {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--cy-red-light), var(--cy-gold));
  border-radius: 3px;
  position: relative;
  transition: width 0.1s linear;
}

.progress-handle {
  position: absolute;
  right: -5px;
  top: -4px;
  width: 14px;
  height: 14px;
  background: #FFFFFF;
  border: 2px solid var(--cy-red);
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(0,0,0,0.4);
}

.time-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #94A3B8;
  margin-bottom: 1.25rem;
  font-variant-numeric: tabular-nums;
}

.playback-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
}

.ctrl-btn {
  background: rgba(255,255,255,0.1);
  color: #FFFFFF;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.ctrl-btn:hover {
  background: rgba(197, 160, 89, 0.3);
  color: var(--cy-gold-light);
}

#seekBackBtn, #seekForwardBtn {
  width: 40px;
  height: 40px;
  font-size: 0.75rem;
  border-radius: 20px;
}

.play-pause-main {
  width: 58px;
  height: 58px;
  background: linear-gradient(135deg, var(--cy-red), var(--cy-red-light));
  font-size: 1.4rem;
  box-shadow: 0 4px 18px rgba(184, 40, 50, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.play-pause-main:hover {
  transform: scale(1.06);
  background: var(--cy-red-light);
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 0.5rem;
}

.vol-btn {
  background: none;
  border: none;
  color: #FFFFFF;
  font-size: 1rem;
  cursor: pointer;
}

.vol-slider {
  width: 65px;
  accent-color: var(--cy-gold);
}

/* 诗卷式歌词静态展台（无滚动条，优雅陈列） */
.anthem-scroll-showcase {
  background: var(--cy-bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--cy-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.scroll-showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--cy-border);
  margin-bottom: 1.5rem;
}

.scroll-title-tag {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--cy-red);
}

.scroll-status-tag {
  font-size: 0.8rem;
  color: var(--cy-gray-mid);
}

.anthem-lyrics-full {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: center;
  padding: 1rem 0;
}

.anthem-poem-block {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.lyric-line {
  font-family: var(--font-serif);
  font-size: 1.28rem;
  color: var(--cy-text-main);
  line-height: 1.8;
  padding: 0.3rem 0;
  border-radius: 4px;
  transition: all 0.4s ease;
}

/* 播放时仅文字变色高亮发光，绝不改变任何浏览器窗口位置 */
.lyric-line.active {
  color: var(--cy-red);
  font-weight: 700;
  transform: scale(1.03);
  text-shadow: 0 0 12px rgba(140, 29, 36, 0.2);
  background: rgba(140, 29, 36, 0.04);
}

.poem-divider {
  color: var(--cy-gold);
  font-size: 1.2rem;
  margin: 0.25rem 0;
  opacity: 0.6;
}

.lyrics-annotated-box {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--cy-bg-warm);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--cy-gold);
  font-size: 0.85rem;
  color: var(--cy-gray-mid);
  line-height: 1.7;
}

.anno-title {
  font-weight: 700;
  color: var(--cy-text-main);
  margin-bottom: 0.4rem;
}

/* 词曲大师名录 */
.creators-banner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

.creator-item-box {
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.creator-avatar {
  width: 90px;
  height: 110px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid var(--cy-gold);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.text-avatar {
  background: linear-gradient(135deg, var(--cy-red), var(--cy-red-dark));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
}

.creator-detail h4 {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  color: var(--cy-text-main);
  margin: 0.25rem 0 0.4rem;
}

.creator-detail p {
  font-size: 0.85rem;
  color: var(--cy-gray-mid);
  line-height: 1.6;
}

.role-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--cy-red);
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
}

/* ==========================================================================
   第二章：崇雅誓词与四维校训
   ========================================================================== */
.pledge-and-motto-wrap {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: stretch;
}

.pledge-scroll-card {
  background: #FCFBF7;
  border: 1px solid #D6D0C2;
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.scroll-seal-mark {
  position: absolute;
  top: 2rem;
  right: 2rem;
  width: 58px;
  height: 58px;
  border: 2px solid var(--cy-red);
  border-radius: 4px;
  color: var(--cy-red);
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.2;
  transform: rotate(8deg);
  opacity: 0.85;
}

.pledge-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--cy-red);
  text-align: center;
  margin-bottom: 0.5rem;
}

.pledge-lead {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--cy-text-main);
  text-align: center;
  margin-bottom: 2rem;
}

.pledge-verses {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: center;
}

.verse-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.verse-line {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: #333842;
  line-height: 1.7;
}

.highlight-four .verse-line {
  color: var(--cy-red);
  font-weight: 500;
}

.highlight-four .verse-line strong {
  font-size: 1.15rem;
  color: var(--cy-red-dark);
}

.verse-climax {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px dashed #D6D0C2;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.climax-1 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cy-red);
}

.climax-2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cy-gold-dark);
}

/* 四维校训展台 */
.motto-pillar-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}

.motto-pillar-header h3 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--cy-text-main);
  margin-bottom: 0.3rem;
}

.motto-pillar-header p {
  font-size: 0.88rem;
  color: var(--cy-gray-mid);
}

.motto-pillars-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.pillar-card {
  background: var(--cy-bg-card);
  border: 1px solid var(--cy-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.pillar-card:hover {
  transform: translateY(-3px);
  border-color: var(--cy-gold);
  box-shadow: var(--shadow-md);
}

.pillar-char {
  width: 48px;
  height: 48px;
  line-height: 48px;
  border-radius: 50%;
  background: rgba(140, 29, 36, 0.08);
  border: 1px dashed var(--cy-gold);
  color: var(--cy-red);
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 900;
  text-align: center;
  flex-shrink: 0;
}

.pillar-info h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--cy-text-main);
  margin-bottom: 0.15rem;
}

.pillar-info p {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cy-gold-dark);
}

.pillar-info span {
  font-size: 0.72rem;
  color: var(--cy-gray-light);
  display: block;
}

.seal-heritage-box {
  background: var(--cy-bg-card);
  border: 1px solid var(--cy-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.seal-round {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--cy-red);
  color: var(--cy-red);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  font-weight: 900;
  line-height: 1.2;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-shrink: 0;
  background: rgba(140, 29, 36, 0.04);
}

.seal-heritage-text strong {
  font-size: 0.92rem;
  color: var(--cy-text-main);
}

.seal-heritage-text p {
  font-size: 0.82rem;
  color: var(--cy-gray-mid);
  margin-top: 0.25rem;
  line-height: 1.5;
}

/* ==========================================================================
   第三章：百年历史沿革
   ========================================================================== */
.pioneers-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.pioneer-card {
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.pioneer-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--cy-gold);
}

.pioneer-img-wrap {
  position: relative;
  width: 100%;
  height: 330px;
  background: linear-gradient(180deg, #1A1D24 0%, #121418 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pioneer-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 22%; /* 垂直居中于面容黄金点，完整呈现五官、肩部与身姿 */
  cursor: pointer;
  transition: transform 0.5s ease;
}

.pioneer-card:hover .pioneer-img {
  transform: scale(1.04);
}

.pioneer-img-wrap::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
  pointer-events: none;
}

.pioneer-content {
  padding: 1.5rem;
}

.pioneer-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cy-gold-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pioneer-content h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin: 0.35rem 0 0.65rem;
  color: var(--cy-text-main);
}

.pioneer-role {
  font-size: 0.85rem;
  color: var(--cy-gray-mid);
  line-height: 1.6;
}

/* 交互时间轴 */
.timeline-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 120px;
  width: 3px;
  background: linear-gradient(180deg, var(--cy-red), var(--cy-gold) 60%, var(--cy-red-dark));
  border-radius: 2px;
}

.timeline-node {
  display: flex;
  align-items: flex-start;
  margin-bottom: 3.5rem;
  position: relative;
}

.node-marker {
  width: 100px;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cy-red);
  text-align: right;
  padding-right: 1.5rem;
  flex-shrink: 0;
}

.timeline-node::before {
  content: '';
  position: absolute;
  left: 114px;
  top: 5px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid var(--cy-red);
  box-shadow: 0 0 0 4px rgba(140, 29, 36, 0.15);
  z-index: 2;
  transition: var(--transition);
}

.timeline-node:hover::before {
  background: var(--cy-gold);
  border-color: var(--cy-red-dark);
  transform: scale(1.3);
}

.node-card {
  margin-left: 2.5rem;
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  flex-grow: 1;
  transition: var(--transition);
}

.timeline-node:hover .node-card {
  box-shadow: var(--shadow-md);
  border-color: rgba(197, 160, 89, 0.5);
  transform: translateX(4px);
}

.node-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cy-gold-dark);
  margin-bottom: 0.4rem;
  letter-spacing: 0.5px;
}

.node-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--cy-text-main);
  margin-bottom: 0.75rem;
}

.node-text {
  font-size: 0.92rem;
  color: var(--cy-gray-mid);
  line-height: 1.7;
}

.node-highlight {
  margin-top: 1rem;
  padding: 0.6rem 1rem;
  background: var(--cy-bg-warm);
  border-left: 3px solid var(--cy-red);
  font-size: 0.82rem;
  color: var(--cy-gray-dark);
}

/* ==========================================================================
   第四章：崇雅、实验与泰雅的演变
   ========================================================================== */
.evolution-diagram-box {
  background: var(--cy-bg-card);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-md);
}

.diagram-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.flow-card.origin {
  background: linear-gradient(135deg, #2A1014, #18191E);
  color: #FFFFFF;
  padding: 1.75rem 2.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--cy-gold);
  box-shadow: var(--shadow-md);
  max-width: 600px;
}

.flow-badge {
  display: inline-block;
  background: var(--cy-red);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 0.5rem;
}

.flow-card.origin h4 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
  color: var(--cy-gold-light);
}

.flow-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  color: var(--cy-gold-dark);
  font-size: 0.85rem;
  font-weight: 700;
}

.arrow-line {
  width: 2px;
  height: 30px;
  background: var(--cy-gold);
  position: relative;
}

.arrow-line::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -4px;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--cy-gold);
}

.flow-branches {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  width: 100%;
}

.branch-card {
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
}

.branch-public {
  background: #FDFBF7;
  border-top: 4px solid var(--cy-red);
}

.branch-private {
  background: #F6F7FA;
  border-top: 4px solid var(--cy-gold-dark);
}

.branch-header {
  margin-bottom: 1.25rem;
}

.tag-public {
  background: rgba(140, 29, 36, 0.1);
  color: var(--cy-red);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.tag-mixed {
  background: rgba(197, 160, 89, 0.15);
  color: var(--cy-gold-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.branch-card h4 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-top: 0.5rem;
}

.branch-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--cy-gray-mid);
}

.branch-card ul strong {
  color: var(--cy-text-main);
}

.reform-bridge {
  margin: 1.5rem 0;
  padding: 0.85rem 1rem;
  background: #FFFFFF;
  border-radius: var(--radius-sm);
  border: 1px dashed #D1D5DB;
  text-align: center;
}

.reform-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: #DC2626;
  margin-bottom: 0.2rem;
}

.reform-desc {
  font-size: 0.75rem;
  color: #6B7280;
}

.branch-taiya {
  background: #FFFFFF;
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  border: 1.5px solid var(--cy-gold);
  box-shadow: 0 4px 12px rgba(197, 160, 89, 0.15);
}

.tag-taiya {
  background: var(--cy-gold);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.branch-taiya h4 {
  font-size: 1.15rem;
  color: var(--cy-gold-dark);
}

.branch-taiya p {
  font-size: 0.82rem;
  color: var(--cy-gray-mid);
  margin-top: 0.35rem;
}

.evolution-summary-card {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem 2rem;
  background: var(--cy-bg-warm);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--cy-red);
}

.summary-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.summary-text h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--cy-text-main);
  margin-bottom: 0.4rem;
}

.summary-text p {
  font-size: 0.92rem;
  color: var(--cy-gray-mid);
  line-height: 1.7;
}

/* ==========================================================================
   第五章：双城印记
   ========================================================================== */
.campuses-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.campus-card {
  background: var(--cy-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
}

.campus-media {
  position: relative;
  height: 280px;
  overflow: hidden;
}

.campus-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
  cursor: pointer;
}

.campus-card:hover .campus-img {
  transform: scale(1.05);
}

.campus-tag {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  background: rgba(18, 20, 23, 0.85);
  color: var(--cy-gold-light);
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(197, 160, 89, 0.4);
}

.campus-body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.campus-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--cy-text-main);
  margin-bottom: 0.75rem;
}

.campus-summary {
  font-size: 0.92rem;
  color: var(--cy-gray-mid);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.campus-features {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feat-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feat-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  background: var(--cy-bg-warm);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feat-item strong {
  display: block;
  font-size: 0.95rem;
  color: var(--cy-text-main);
  margin-bottom: 0.2rem;
}

.feat-item p {
  font-size: 0.82rem;
  color: var(--cy-gray-mid);
  line-height: 1.5;
}

/* ==========================================================================
   第六章：青春图鉴 (熊猫装校服与生活碎片)
   ========================================================================== */
.memories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.memory-card {
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.memory-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.memory-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.memory-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  cursor: pointer;
}

.memory-card:hover .memory-img-wrap img {
  transform: scale(1.08);
}

.memory-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: rgba(140, 29, 36, 0.9);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.memory-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.memory-body h4 {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  color: var(--cy-text-main);
  margin-bottom: 0.5rem;
}

.memory-body p {
  font-size: 0.85rem;
  color: var(--cy-gray-mid);
  line-height: 1.6;
}

/* ==========================================================================
   第七章：回味「我是崇雅人 [IMCYER]」项目 (2011-2026)
   ========================================================================== */
.imcyer-tribute-hero {
  background: #15181E;
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.5rem;
  color: #FFFFFF;
  border: 1px solid rgba(197, 160, 89, 0.35);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 2.5rem;
  align-items: center;
  margin-bottom: 2.5rem;
}

.imcyer-banner-img {
  width: 100%;
  max-width: 600px;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  border: 1px solid rgba(197, 160, 89, 0.4);
  cursor: pointer;
}

.tribute-lead-text h3 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  color: #FFFFFF;
  margin-bottom: 0.85rem;
}

.tribute-lead-text p {
  font-size: 0.95rem;
  color: #CBD5E1;
  line-height: 1.8;
  margin-bottom: 0.85rem;
}

.tribute-honest-quote {
  padding: 1rem 1.25rem;
  background: rgba(140, 29, 36, 0.2);
  border-left: 3px solid var(--cy-gold);
  border-radius: 4px;
  color: #F5D38A !important;
  font-family: var(--font-serif);
}

.imcyer-emblem-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.imcyer-emblem {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--cy-gold);
  box-shadow: 0 0 25px rgba(197, 160, 89, 0.35);
  cursor: pointer;
}

.emblem-caption {
  font-size: 0.75rem;
  color: var(--cy-gold-light);
  letter-spacing: 0.5px;
}

/* 真实历史物证陈列馆 */
.imcyer-artifacts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-bottom: 2.5rem;
}

.artifact-card {
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.artifact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--cy-gold);
}

.artifact-media {
  background: #F1EFEA;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.double-bookmarks {
  display: flex;
  gap: 1rem;
}

.bookmark-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.bookmark-slot img {
  height: 240px;
  width: auto;
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  border: 1px solid rgba(0,0,0,0.1);
}

.bookmark-slot span {
  font-size: 0.72rem;
  color: var(--cy-gray-mid);
}

.screenshot-scroll {
  height: 265px;
  overflow: hidden;
  padding: 0;
}

.screenshot-scroll img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  cursor: pointer;
}

.artifact-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.artifact-info h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--cy-text-main);
  margin-bottom: 0.5rem;
}

.artifact-info p {
  font-size: 0.88rem;
  color: var(--cy-gray-mid);
  line-height: 1.6;
}

.imcyer-archive-footer {
  background: var(--cy-bg-card);
  border: 1px solid var(--cy-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.footer-history-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.footer-history-text {
  flex-grow: 1;
}

.footer-history-text strong {
  font-size: 0.95rem;
  color: var(--cy-text-main);
}

.footer-history-text p {
  font-size: 0.88rem;
  color: var(--cy-gray-mid);
  margin-top: 0.2rem;
}

.footer-history-text a {
  color: var(--cy-red);
  text-decoration: underline;
  font-weight: 600;
}

/* ==========================================================================
   第八章：专属校友卡生成器
   ========================================================================== */
.card-generator-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  background: var(--cy-bg-card);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-md);
}

.generator-form-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--cy-text-main);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--cy-border);
  border-radius: var(--radius-sm);
  background: var(--cy-bg-warm);
  font-size: 0.92rem;
  color: var(--cy-text-main);
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--cy-red);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(140, 29, 36, 0.1);
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.generator-preview-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.alumni-card-canvas-wrap {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--cy-gold);
}

#alumniCardCanvas {
  width: 100%;
  height: auto;
  display: block;
}

.preview-tip {
  font-size: 0.8rem;
  color: var(--cy-gray-light);
  text-align: center;
}

/* ==========================================================================
   第九章：时光留言墙 (服务端持久化)
   ========================================================================== */
.server-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--cy-bg-card);
  border: 1px solid var(--cy-border);
  border-radius: 20px;
  margin-bottom: 1.5rem;
  font-size: 0.8rem;
  color: var(--cy-gray-mid);
  box-shadow: var(--shadow-sm);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-indicator.online {
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
}

.status-indicator.offline {
  background: #F59E0B;
  box-shadow: 0 0 8px #F59E0B;
}

.message-input-card {
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2.5rem;
}

.input-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.input-row input,
.input-row select,
.message-input-card textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--cy-border);
  border-radius: var(--radius-sm);
  background: var(--cy-bg-warm);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
}

.input-row input:focus,
.input-row select:focus,
.message-input-card textarea:focus {
  border-color: var(--cy-red);
  background: #FFFFFF;
}

.message-input-card textarea {
  margin-bottom: 0.75rem;
  resize: vertical;
}

.input-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.char-count {
  font-size: 0.8rem;
  color: var(--cy-gray-light);
}

.messages-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.message-card {
  background: var(--cy-bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--cy-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
}

.message-card::before {
  content: '“';
  position: absolute;
  top: 0.5rem;
  right: 1rem;
  font-family: var(--font-serif);
  font-size: 4rem;
  line-height: 1;
  color: rgba(140, 29, 36, 0.08);
  pointer-events: none;
}

.message-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--cy-gold);
}

.message-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.msg-author {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--cy-text-main);
}

.msg-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  background: rgba(140, 29, 36, 0.08);
  color: var(--cy-red);
  border-radius: 4px;
  font-weight: 600;
}

.msg-text {
  font-size: 0.9rem;
  color: var(--cy-gray-mid);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.msg-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px dashed var(--cy-border);
  padding-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--cy-gray-light);
}

.like-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--cy-gray-light);
  font-size: 0.82rem;
  transition: var(--transition);
}

.like-btn:hover, .like-btn.liked {
  color: var(--cy-red);
}

/* ==========================================================================
   底栏 Footer
   ========================================================================== */
.site-footer {
  background: #111316;
  color: #FFFFFF;
  padding: 4.5rem 1.5rem 2.5rem;
  border-top: 2px solid var(--cy-red);
}

.footer-container {
  max-width: 1240px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--cy-gold-light);
  margin-bottom: 0.4rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: #94A3B8;
  letter-spacing: 1px;
}

.footer-motto {
  margin-top: 1rem;
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(140, 29, 36, 0.3);
  border: 1px solid var(--cy-gold);
  border-radius: 20px;
  color: var(--cy-gold-light);
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: 2px;
}

.footer-links-group h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
}

.footer-links-group a {
  display: block;
  font-size: 0.88rem;
  color: #94A3B8;
  margin-bottom: 0.65rem;
}

.footer-links-group a:hover {
  color: var(--cy-gold-light);
  transform: translateX(3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  font-size: 0.82rem;
  color: #64748B;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* ==========================================================================
   全局悬浮迷你校歌音乐条 (Floating Mini Bar)
   ========================================================================== */
.floating-music-bar {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(18, 20, 24, 0.94);
  border: 1px solid rgba(197, 160, 89, 0.5);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  border-radius: 40px;
  padding: 0.45rem 1.25rem 0.45rem 0.45rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  z-index: 999;
  color: #FFFFFF;
  transition: var(--transition);
}

.floating-music-bar:hover {
  border-color: var(--cy-gold);
  transform: translateY(-2px);
}

.float-disc {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--cy-gold);
  flex-shrink: 0;
}

.float-disc img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.float-disc.spinning img {
  animation: spinRecord 12s linear infinite;
}

.float-info {
  display: flex;
  flex-direction: column;
}

.float-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #FFFFFF;
}

.float-time {
  font-size: 0.72rem;
  color: var(--cy-gold-light);
  font-variant-numeric: tabular-nums;
}

.float-play-btn, .float-expand-btn {
  background: var(--cy-red);
  color: #FFFFFF;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.float-expand-btn {
  background: rgba(255, 255, 255, 0.1);
}

.float-play-btn:hover {
  background: var(--cy-red-light);
  transform: scale(1.1);
}

.float-expand-btn:hover {
  background: rgba(197, 160, 89, 0.3);
}

/* ==========================================================================
   图片灯箱模态框 (Lightbox Modal)
   ========================================================================== */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.94);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1.5rem;
}

.lightbox-modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lightbox-img {
  max-width: 92vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 40px rgba(0,0,0,0.8);
  border: 1px solid rgba(255,255,255,0.2);
}

.lightbox-caption {
  color: var(--cy-gold-light);
  font-size: 0.95rem;
  margin-top: 1rem;
  font-family: var(--font-serif);
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  color: #FFFFFF;
  font-size: 2.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.lightbox-close:hover {
  color: var(--cy-red);
}

/* ==========================================================================
   移动端与全平台自适应适配 (Responsive Media Queries)
   ========================================================================== */
@media (max-width: 1024px) {
  .anthem-grid,
  .pledge-and-motto-wrap,
  .flow-branches,
  .campuses-comparison,
  .imcyer-tribute-hero,
  .imcyer-artifacts-grid,
  .card-generator-wrapper {
    grid-template-columns: 1fr;
  }

  .memories-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .messages-wall {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .nav-container {
    padding: 0.65rem 1rem;
  }

  .nav-links {
    display: none; /* 移动端顶部保留品牌与校歌播放快捷按钮 */
  }

  .hero-section {
    padding: 6.5rem 1rem 4rem;
    min-height: auto;
  }

  .hero-couplet-wrap {
    padding: 0.6rem 1rem;
    border-left: 2px solid var(--cy-gold);
    border-right: 2px solid var(--cy-gold);
  }

  .couplet-line {
    white-space: normal; /* 极窄手机屏自然折行但保证两句分明 */
    font-size: 0.95rem;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    padding: 1.25rem 1rem;
  }

  .stat-divider {
    display: none;
  }

  .anthem-player-card {
    padding: 2rem 1.25rem;
  }

  .vinyl-display {
    width: 180px;
    height: 180px;
  }

  .creators-banner {
    grid-template-columns: 1fr;
  }

  .creator-item-box {
    flex-direction: column;
    text-align: center;
  }

  .motto-pillars-grid {
    grid-template-columns: 1fr;
  }

  .pioneers-row {
    grid-template-columns: 1fr;
  }

  .timeline-line {
    left: 20px;
  }

  .timeline-node {
    flex-direction: column;
    padding-left: 45px;
  }

  .timeline-node::before {
    left: 14px;
    top: 0;
  }

  .node-marker {
    width: auto;
    text-align: left;
    padding-right: 0;
    margin-bottom: 0.5rem;
  }

  .node-card {
    margin-left: 0;
    padding: 1.25rem;
  }

  .memories-grid {
    grid-template-columns: 1fr;
  }

  .imcyer-tribute-hero {
    grid-template-columns: 1fr;
    padding: 2rem 1.25rem;
  }

  .imcyer-emblem-box {
    order: -1;
  }

  .imcyer-emblem {
    width: 120px;
    height: 120px;
  }

  .imcyer-artifacts-grid {
    grid-template-columns: 1fr;
  }

  .double-bookmarks {
    flex-direction: column;
  }

  .imcyer-archive-footer {
    flex-direction: column;
    text-align: center;
  }

  .card-generator-wrapper {
    padding: 1.5rem 1rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  .messages-wall {
    grid-template-columns: 1fr;
  }

  .floating-music-bar {
    bottom: 1rem;
    right: 1rem;
    padding: 0.35rem 0.85rem 0.35rem 0.35rem;
  }

  .floating-music-bar .float-title {
    font-size: 0.78rem;
  }

  .floating-music-bar .float-time {
    display: none;
  }
}