/* ==========================================================================
   DESIGN SYSTEM: PREMIUM MINIMALIST AURORA 2.0 (殿堂级极光微光极简主义)
   Aesthetics: Vercel/Linear-class Glassmorphism, Dynamic Border Glows, 
               Spring-action Physics, Fluid Typography & Premium Layout
   ========================================================================== */

:root {
  /* 极致奢华暗黑底色 */
  --bg-dark: #030303;
  --bg-card: rgba(10, 10, 15, 0.75);
  --bg-card-hover: rgba(16, 16, 24, 0.9);
  --bg-input: #050508;
  
  /* 殿堂级霓虹极光色 */
  --neon-blue: #3b82f6;
  --neon-indigo: #6366f1;
  --neon-pink: #d946ef;
  --neon-green: #10b981;
  --neon-orange: #f59e0b;
  
  /* 精细文字与边框 */
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;
  --border-color: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(99, 102, 241, 0.35);
  
  /* 顶级字体系统 */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', "Fira Code", monospace;

  /* 物理弹簧过渡与阴影 */
  --transition-spring: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
}

/* 基础重置 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
  letter-spacing: -0.01em;
}

/* 交互网格背景 */
#grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

/* 多层次极光视差晕圈 (Multi-layer Aurora Glow) */
body::before {
  content: "";
  position: absolute;
  top: -10%;
  left: 30%;
  width: 50vw;
  height: 50vh;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(59, 130, 246, 0) 70%);
  z-index: -1;
  filter: blur(120px);
  pointer-events: none;
  animation: floatGlow 12s infinite alternate;
}

body::after {
  content: "";
  position: absolute;
  top: 20%;
  right: 20%;
  width: 40vw;
  height: 40vh;
  background: radial-gradient(circle, rgba(217, 70, 239, 0.05) 0%, rgba(99, 102, 241, 0) 70%);
  z-index: -1;
  filter: blur(140px);
  pointer-events: none;
  animation: floatGlow 18s infinite alternate-reverse;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 30px) scale(1.1); }
}

/* ==========================================================================
   統一导航栏 Navbar (高虚化毛玻璃)
   ========================================================================== */
.navbar {
  background: rgba(3, 3, 3, 0.75);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-smooth);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.neon-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  position: relative;
}

.neon-indicator::after {
  content: "";
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: 50%;
  border: 1px solid var(--neon-green);
  opacity: 0;
  animation: ripple 2s infinite;
}

@keyframes ripple {
  0% { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(1.8); opacity: 0; }
}

.neon-indicator.active {
  background: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green), 0 0 20px var(--neon-green);
}
.neon-indicator.active::after {
  opacity: 1;
}

.logo-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.5px;
  background: linear-gradient(to right, #fff, #a1a1aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-title .accent-dot {
  color: var(--neon-pink);
  -webkit-text-fill-color: var(--neon-pink);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13.5px;
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.nav-link.active {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--neon-blue);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.18);
  padding: 3px 9px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.github-icon-btn {
  color: var(--text-secondary);
  transition: var(--transition-spring);
  display: flex;
  align-items: center;
}

.github-icon-btn:hover {
  color: var(--text-primary);
  transform: rotate(8deg) scale(1.15);
}

.nav-download-btn {
  display: inline-block;
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--neon-indigo), var(--neon-blue));
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
  transition: var(--transition-spring);
}

.nav-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* ==========================================================================
   页面容器与布局
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 页头格式化 */
.page-header {
  text-align: center;
  padding: 70px 0 30px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  background: linear-gradient(to right, #fff, #d4d4d8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 14.5px;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ==========================================================================
   HERO 首页：聚焦文案与 3D 流光截图
   ========================================================================== */
.hero-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 80px 0 50px;
}

.release-glow-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--neon-pink);
  background: rgba(217, 70, 239, 0.06);
  border: 1px solid rgba(217, 70, 239, 0.15);
  padding: 4px 12px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 20px;
  font-weight: 600;
  box-shadow: 0 0 15px rgba(217, 70, 239, 0.05);
}

.hero-huge-title {
  font-family: var(--font-display);
  font-size: 60px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 30%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 40px rgba(255, 255, 255, 0.05);
}

.hero-main-subtitle {
  color: var(--text-secondary);
  font-size: 15.5px;
  line-height: 1.7;
  max-width: 720px;
  margin-bottom: 36px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
}

.btn-glow-primary {
  padding: 13px 28px;
  background: linear-gradient(135deg, var(--neon-indigo), var(--neon-blue));
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
  transition: var(--transition-spring);
}

.btn-glow-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.55);
}

.btn-glow-primary:active {
  transform: translateY(-1px) scale(0.98);
}

.btn-outline-secondary {
  padding: 13px 28px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: 6px;
  transition: var(--transition-spring);
}

.btn-outline-secondary:hover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

/* ==========================================================================
   真实截图展示区 UI (3D 倾斜与磨砂效果)
   ========================================================================== */
.real-screenshot-wrapper {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8), 0 0 40px rgba(99, 102, 241, 0.05);
  background: #08080c;
  transform: rotateX(3deg) rotateY(-0.5deg);
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s;
}

.real-screenshot-wrapper:hover {
  transform: rotateX(0deg) rotateY(0deg) scale(1.015);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.9), 0 0 60px rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.25);
}

.screenshot-titlebar {
  background: #0d0d12;
  padding: 10px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.mock-dots {
  display: flex;
  gap: 6px;
}

.mock-dots .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}
.mock-dots .dot.red { background: #ef4444; }
.mock-dots .dot.yellow { background: #f59e0b; }
.mock-dots .dot.green { background: #10b981; }

.screenshot-title-text {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-align: center;
  flex: 1;
}

.mock-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--neon-pink);
  background: rgba(217, 70, 239, 0.08);
  border: 1px solid rgba(217, 70, 239, 0.15);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 600;
}

.real-screenshot-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: cover;
  object-position: top;
  transition: opacity 0.35s ease, transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border-bottom: 1px solid var(--border-color);
}

/* 截图导航卡片 */
.screenshot-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  background: rgba(5, 5, 8, 0.4);
  backdrop-filter: blur(10px);
}

.sc-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-spring);
}

.sc-dot:hover {
  background: var(--text-secondary);
  transform: scale(1.3);
}

.sc-dot.active {
  background: var(--neon-blue);
  box-shadow: 0 0 10px var(--neon-blue);
  transform: scale(1.4);
}

.screenshot-caption {
  text-align: center;
  font-size: 11px;
  color: var(--text-secondary);
  padding: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 500;
  background: rgba(5, 5, 8, 0.4);
  backdrop-filter: blur(10px);
}

/* ==========================================================================
   首页直观痛点卡片
   ========================================================================== */
.value-proposition-section {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
}

.value-title-wrap {
  text-align: center;
  margin-bottom: 40px;
}

.value-title-wrap h2 {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-title-wrap p {
  color: var(--text-secondary);
  font-size: 13.5px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 30px 24px;
  transition: var(--transition-spring);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.value-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.v-icon {
  font-size: 30px;
  margin-bottom: 16px;
}

.value-card h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.value-card .v-desc {
  color: var(--text-secondary);
  font-size: 12.5px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.v-link {
  font-size: 11.5px;
  color: var(--neon-blue);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.v-link:hover {
  color: #60a5fa;
  padding-left: 4px;
}

/* ==========================================================================
   BENTO GRID (均等排版优化)
   ========================================================================== */
.bento-section {
  padding: 20px 0 45px;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 10px 0 30px;
}

@media (max-width: 968px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 28px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: var(--transition-spring);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bento-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.bento-card.large {
  grid-column: span 3;
}

@media (max-width: 968px) {
  .bento-card.large {
    grid-column: span 1;
  }
}

.bento-card.flex-row {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 30px;
}

@media (max-width: 768px) {
  .bento-card.flex-row {
    grid-template-columns: 1fr;
  }
}

.bento-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1px;
  padding: 2px 7px;
  border-radius: 4px;
  align-self: flex-start;
  font-weight: 600;
}
.bento-badge.blue { color: var(--neon-blue); background: rgba(59,130,246,0.06); border: 1px solid rgba(59,130,246,0.15); }
.bento-badge.pink { color: var(--neon-pink); background: rgba(217,70,239,0.06); border: 1px solid rgba(217,70,239,0.15); }
.bento-badge.green { color: var(--neon-green); background: rgba(16,185,129,0.06); border: 1px solid rgba(16,185,129,0.15); }
.bento-badge.orange { color: var(--neon-orange); background: rgba(245,158,11,0.06); border: 1px solid rgba(245,158,11,0.15); }

.bento-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.bento-card p {
  color: var(--text-secondary);
  font-size: 12.5px;
  line-height: 1.6;
}

.network-topology-anim {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0,0,0,0.4);
  padding: 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  width: 100%;
}

.node {
  font-size: 10px;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
}

.node.target {
  border-color: var(--neon-green);
  color: var(--neon-green);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.1);
}

.wire-pulse {
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
  position: relative;
  overflow: hidden;
  flex-grow: 1;
}

.wire-pulse::after {
  content: "";
  position: absolute;
  left: -100%;
  width: 40%;
  height: 100%;
  background: #fff;
  animation: pulseWire 2s infinite;
}

@keyframes pulseWire {
  0% { left: -100%; }
  100% { left: 100%; }
}

.translation-demo-box {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.5;
}

.demo-line-before {
  color: #f87171;
  text-decoration: line-through;
}

.demo-arrow {
  margin: 4px 0;
  color: var(--text-muted);
}

.demo-line-after {
  color: var(--neon-green);
  border-right: 2px solid var(--neon-green);
  display: inline-block;
}

/* ==========================================================================
   IDE DIFF COMPARE
   ========================================================================== */
.ide-section {
  padding: 40px 0 50px;
  border-top: 1px solid var(--border-color);
}

.section-title-wrap {
  text-align: center;
  margin-bottom: 30px;
}

.section-title-wrap h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
}

.section-title-wrap p {
  color: var(--text-secondary);
  font-size: 13.5px;
}

.ide-window {
  display: grid;
  grid-template-columns: 210px 1fr;
  background: #060608;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  height: 340px;
  box-shadow: 0 25px 60px rgba(0,0,0,0.6);
  overflow: hidden;
}

@media (max-width: 768px) {
  .ide-window {
    grid-template-columns: 1fr;
    height: auto;
  }
}

.ide-sidebar {
  background: #0b0b0f;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 10px 16px;
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
}

.sidebar-files {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.file-item {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 7px 10px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.file-item:hover {
  background: rgba(255,255,255,0.02);
  color: var(--text-primary);
}

.file-item.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--neon-indigo);
  font-weight: 600;
  border: 1px solid rgba(99, 102, 241, 0.15);
}

.ide-editor {
  position: relative;
  background: #030304;
}

.editor-pane {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  display: flex;
  flex-direction: column;
}

.editor-pane.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
}

.editor-header {
  padding: 8px 16px;
  background: rgba(255,255,255,0.01);
  border-bottom: 1px solid var(--border-color);
  font-size: 10.5px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.code-view {
  padding: 20px;
  overflow-y: auto;
  flex-grow: 1;
  font-size: 11.5px;
}

.code-view code {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.line-del {
  color: #f87171;
  background: rgba(239, 68, 68, 0.08);
  padding: 1px 6px;
  border-left: 2px solid #ef4444;
  display: block;
}

.line-add {
  color: #4ade80;
  background: rgba(34, 197, 94, 0.08);
  padding: 1px 6px;
  border-left: 2px solid #22c55e;
  display: block;
}

/* ==========================================================================
   INSTALL / DOWNLOAD (CRT CRT-WINDOW TERMINAL)
   ========================================================================== */
.demo-section {
  padding: 20px 0 40px;
}

.interactive-terminal {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 30px;
  align-items: center;
  backdrop-filter: blur(20px);
}

@media (max-width: 768px) {
  .interactive-terminal {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 20px;
  }
}

.term-left h3 {
  font-family: var(--font-display);
  font-size: 21px;
  margin-bottom: 8px;
}

.term-left .desc {
  color: var(--text-secondary);
  font-size: 12.5px;
  margin-bottom: 20px;
}

.run-btn {
  padding: 10px 20px;
  background: transparent;
  color: var(--neon-pink);
  border: 1px solid rgba(217, 70, 239, 0.4);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12.5px;
  cursor: pointer;
  transition: var(--transition-spring);
}

.run-btn:hover {
  background: var(--neon-pink);
  color: #fff;
  box-shadow: 0 0 15px rgba(217, 70, 239, 0.35);
  border-color: transparent;
}

/* 逼真的 CRT 终端发光扫描线效果 */
.terminal-window {
  background: #020203;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-family: var(--font-mono);
  box-shadow: inset 0 0 30px rgba(0,0,0,0.9), 0 0 20px rgba(217, 70, 239, 0.03);
  overflow: hidden;
  position: relative;
}

.terminal-window::after {
  content: " ";
  display: block;
  position: absolute;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
  z-index: 10;
  background-size: 100% 3px, 3px 100%;
  pointer-events: none;
}

.terminal-header {
  padding: 6px 14px;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border-color);
  font-size: 10.5px;
  color: var(--text-muted);
}

.terminal-body {
  padding: 16px;
  height: 190px;
  overflow-y: auto;
  font-size: 11.5px;
}

.term-text {
  margin-bottom: 6px;
  word-break: break-all;
}

.guide-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.guide-section h2 {
  font-family: var(--font-display);
  font-size: 28px;
  margin-bottom: 30px;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  text-align: left;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.step-num {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 700;
  color: rgba(255,255,255,0.01);
  position: absolute;
  top: -15px;
  right: -5px;
  user-select: none;
}

.step-card h4 {
  font-family: var(--font-display);
  font-size: 16px;
  margin-bottom: 12px;
  font-weight: 600;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 12.5px;
}

/* 下载段 */
.download-section {
  padding: 40px 0 60px;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.download-section h2 {
  font-family: var(--font-display);
  font-size: 28px;
  margin-bottom: 8px;
}

.download-section .subtitle {
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-size: 13.5px;
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  max-width: 800px;
  margin: 0 auto;
}

.dl-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 28px 24px;
  text-align: left;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: var(--transition-spring);
  backdrop-filter: blur(20px);
}

.dl-card:hover {
  transform: scale(1.015);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.tag-recommend {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--neon-blue);
  color: #fff;
  font-size: 9px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.5px;
}

.tag-auto {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--neon-pink);
  color: #fff;
  font-size: 9px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.5px;
}

.dl-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin-bottom: 6px;
  font-weight: 700;
}

.file-name {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 18px;
  display: block;
}

.dl-card .desc {
  color: var(--text-secondary);
  font-size: 12.5px;
  line-height: 1.6;
  margin-bottom: 24px;
  flex-grow: 1;
}

.dl-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 12px;
  background: linear-gradient(135deg, var(--neon-indigo), var(--neon-blue));
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-family: var(--font-display);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
  transition: var(--transition-spring);
}

.dl-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.dl-btn.secondary {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  box-shadow: none;
}

.dl-btn.secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--text-secondary);
}

/* ==========================================================================
   FAQ FOLDING ACCORDION
   ========================================================================== */
.faq-section {
  padding: 40px 0 60px;
  text-align: center;
}

.faq-accordion {
  max-width: 760px;
  margin: 30px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  backdrop-filter: blur(20px);
  transition: var(--transition-spring);
}

.faq-trigger {
  padding: 18px 24px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-icon {
  color: var(--text-muted);
  transition: transform 0.3s;
}

.faq-item.active {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--neon-pink);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  background: rgba(0,0,0,0.1);
}

.faq-content p {
  padding: 0 24px 18px;
  color: var(--text-secondary);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ==========================================================================
   D1 数据库留言墙 & Bug 反馈区域样式 (完全剥离内联)
   ========================================================================== */
.feedback-section-divider {
  border-top: 1px solid var(--border-color);
  padding-top: 40px !important;
}

.feedback-panel-title {
  font-size: 26px !important;
}

.feedback-grid-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 30px;
  text-align: left;
  max-width: 900px;
  margin: 0 auto 40px;
}

.feedback-form-left {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.feedback-sub-title {
  font-size: 16px;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-weight: 600;
}

.feedback-sub-title.title-pink { color: var(--neon-pink); }
.feedback-sub-title.title-blue { color: var(--neon-blue); }

#feedback-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feedback-input {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 11px 14px;
  color: #fff;
  font-family: var(--font-display);
  font-size: 12px;
  transition: var(--transition-smooth);
}

.feedback-textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 11px 14px;
  color: #fff;
  font-family: var(--font-display);
  font-size: 12px;
  transition: var(--transition-smooth);
  min-height: 120px; /* 防止弹性布局强行挤压 */
  resize: vertical;  /* 允许用户上下拉伸 */
}

.feedback-input:focus, .feedback-textarea:focus {
  border-color: var(--border-glow);
  outline: none;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.1);
}

.feedback-submit-button {
  align-self: flex-start;
  padding: 10px 24px;
}

.feedback-wall-right {
  display: flex;
  flex-direction: column;
  height: 260px;
}

.feedback-wall-body {
  background: #020203;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  flex-grow: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  /* 隐藏滚动条 */
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.feedback-wall-body::-webkit-scrollbar {
  display: none;
}

.feedback-loading {
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  margin-top: 50px;
}

/* ==========================================================================
   統一页脚 Footer
   ========================================================================== */
.footer {
  padding: 28px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 11.5px;
  color: var(--text-muted);
  background: rgba(3, 3, 3, 0.6);
  backdrop-filter: blur(10px);
}

.footer p {
  margin-bottom: 6px;
}

.footer .muted {
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.5;
  font-size: 10.5px;
}

/* ==========================================================================
   MOBILE RESPONSIVENESS & MEDIA QUERIES (极致移动端自适应适配)
   ========================================================================== */

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 28px;
  height: 28px;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle .bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  /* 页面整体间距收缩 */
  .page-header {
    padding: 40px 0 20px;
  }
  
  .page-title {
    font-size: 28px;
  }
  
  .page-subtitle {
    font-size: 13px;
  }

  /* 移动端顶栏防拥挤重构 */
  .nav-toggle {
    display: flex;
  }

  .nav-container {
    padding: 10px 16px;
  }

  .logo-title {
    font-size: 16px !important;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(5, 5, 8, 0.97);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 0;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease;
  }

  /* 展开时加入移动端专享下载按钮，防止顶部拥挤 */
  .navbar.mobile-active .nav-menu {
    max-height: 300px;
    opacity: 1;
    padding: 16px 20px 24px;
  }

  .navbar.mobile-active .nav-toggle .bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }
  .navbar.mobile-active .nav-toggle .bar:nth-child(2) {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .nav-link {
    display: block;
    text-align: center;
    padding: 11px;
    font-size: 14.5px;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-actions .badge {
    display: none !important; /* 手机端绝对隐藏版本徽章 */
  }

  .nav-actions .nav-download-btn {
    display: none !important; /* 手机端顶部绝对隐藏，防挤爆折行 */
  }

  /* Hero 区域 */
  .hero-center {
    padding: 40px 0 30px;
  }

  .hero-huge-title {
    font-size: 32px;
    line-height: 1.25;
  }

  .hero-main-subtitle {
    font-size: 13px;
    margin-bottom: 24px;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 290px;
    gap: 10px;
    margin-bottom: 30px;
  }

  .btn-glow-primary, .btn-outline-secondary {
    width: 100%;
    text-align: center;
    padding: 11px;
  }

  /* 真实截图容器自适应 */
  .real-screenshot-wrapper {
    transform: none !important;
    width: 100%;
  }

  .real-screenshot-wrapper:hover {
    transform: none !important;
  }

  .real-screenshot-img {
    max-height: 200px;
  }

  /* Bento 扁平化 */
  .bento-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .bento-card {
    padding: 20px;
  }

  .bento-card.large.flex-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .network-topology-anim {
    padding: 8px;
    gap: 6px;
  }

  .node {
    font-size: 8.5px;
    padding: 2px 5px;
  }

  .wire-pulse {
    width: 20px;
  }

  /* IDE 切换器横移 */
  .ide-window {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: auto;
  }

  .ide-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .sidebar-files {
    flex-direction: row;
    overflow-x: auto;
    white-space: nowrap;
    padding: 8px;
    gap: 8px;
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
  
  .sidebar-files::-webkit-scrollbar {
    display: none;
  }

  .file-item {
    display: inline-flex;
    width: auto;
  }

  .code-view {
    padding: 14px;
    font-size: 9.5px;
  }

  /* 物理终端 */
  .interactive-terminal {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 16px;
  }

  .terminal-body {
    height: 140px;
  }

  /* D1 反馈墙手机端完美自适应（彻底解决并排挤压） */
  .feedback-grid-container {
    grid-template-columns: 1fr !important; /* 手机端绝对重构为单列 */
    gap: 24px !important;
    padding: 0 10px;
  }

  .feedback-wall-right {
    height: 240px;
  }

  .feedback-submit-button {
    width: 100% !important; /* 提交按钮在手机上撑满，更好触控 */
    text-align: center;
  }

  /* 痛点 propositions */
  .value-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .value-card {
    padding: 20px;
  }

  /* 下载面板 */
  .download-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .dl-card {
    padding: 20px;
  }

  /* FAQ */
  .faq-accordion {
    margin-top: 16px;
  }
}

/* ==========================================================================
   图片上传组件高级样式 (R2 Upload Premium UI)
   ========================================================================== */
.feedback-upload-container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 4px 0 8px;
  position: relative;
}

.feedback-file-input {
  display: none !important; /* 隐藏原生难看的文件选择框 */
}

.upload-btn-label {
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 11.5px;
  font-family: var(--font-display);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-spring);
  user-select: none;
}

.upload-btn-label:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--neon-indigo);
  color: var(--text-primary);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.15);
}

.upload-filename {
  font-size: 11px;
  color: var(--text-muted);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-preview-box {
  display: none; /* 默认隐藏 */
  position: relative;
  width: 54px;
  height: 54px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #000;
}

.upload-preview-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.remove-preview-btn {
  position: absolute;
  top: 2px;
  right: 2px;
  background: rgba(0, 0, 0, 0.7);
  border: none;
  color: #fff;
  border-radius: 50%;
  width: 15px;
  height: 15px;
  font-size: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.remove-preview-btn:hover {
  background: #ef4444;
}

/* 留言墙大图展示样式 */
.wall-post-img {
  display: block;
  max-width: 100%;
  max-height: 140px;
  border-radius: 6px;
  margin-top: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
  transition: var(--transition-spring);
  object-fit: contain;
}

.wall-post-img:hover {
  transform: scale(1.02);
  border-color: var(--neon-blue);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}

/* ==========================================================================
   全屏磨砂大图灯箱组件 (Lightbox Modal)
   ========================================================================== */
.lightbox-modal {
  display: none; /* 默认隐藏 */
  position: fixed;
  z-index: 2000; /* 置于顶层 */
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(3, 3, 3, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.lightbox-modal.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  display: block;
  max-width: 90%;
  max-height: 80%;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.9);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.lightbox-modal.active .lightbox-content {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  color: var(--text-secondary);
  font-size: 32px;
  font-weight: 300;
  cursor: pointer;
  transition: var(--transition-smooth);
  user-select: none;
}

.lightbox-close:hover {
  color: #fff;
  transform: scale(1.15) rotate(90deg);
}

.lightbox-caption {
  margin-top: 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
  font-family: var(--font-display);
  letter-spacing: 0.5px;
}

@media (max-width: 768px) {
  .lightbox-content {
    max-width: 95%;
    max-height: 70%;
  }
  .lightbox-close {
    top: 16px;
    right: 20px;
    font-size: 28px;
  }
}

/* ==========================================================================
   极客登录/注册面板、状态条与锁定卡片
   ========================================================================== */
.auth-panel-container {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.auth-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 8px;
}

.auth-tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-display);
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  position: relative;
  transition: var(--transition-smooth);
}

.auth-tab-btn.active {
  color: var(--text-primary);
}

.auth-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -9px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-indigo));
  box-shadow: 0 0 8px var(--neon-blue);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.auth-form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.auth-input {
  flex: 1;
  min-width: 150px;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 12.5px;
  font-family: var(--font-display);
  transition: var(--transition-smooth);
}

.auth-input:focus {
  outline: none;
  border-color: var(--neon-indigo);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
  background: rgba(0, 0, 0, 0.4);
}

.auth-submit-btn {
  padding: 10px 24px !important;
  font-size: 12.5px;
}

.user-status-container {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 8px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.user-indicator {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 2s infinite;
}

.user-info-text {
  font-size: 13px;
  color: var(--text-secondary);
  flex: 1;
}

.admin-badge {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  font-size: 9.5px;
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 6px;
  font-weight: 600;
  text-shadow: 0 0 5px rgba(239, 68, 68, 0.3);
}

.logout-action-btn {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: 11px;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.logout-action-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.lock-placeholder-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: rgba(255, 255, 255, 0.01);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  text-align: center;
  backdrop-filter: blur(4px);
}

.lock-icon {
  font-size: 32px;
  margin-bottom: 12px;
  animation: float 3s ease-in-out infinite;
}

.lock-placeholder-card p {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 280px;
}

/* ==========================================================================
   二级回复与删除按钮极简样式
   ========================================================================== */
.replies-container {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reply-item {
  background: rgba(255, 255, 255, 0.01);
  border-left: 2px solid var(--neon-blue);
  padding: 8px 12px;
  border-radius: 0 6px 6px 0;
  position: relative;
}

.reply-meta {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  margin-bottom: 4px;
}

.reply-user {
  color: var(--neon-blue);
  font-weight: 600;
}

.reply-user.admin {
  color: #f87171;
  text-shadow: 0 0 5px rgba(239, 68, 68, 0.2);
}

.reply-time {
  color: var(--text-muted);
}

.reply-text {
  font-size: 11.5px;
  color: var(--text-secondary);
  line-height: 1.5;
  word-break: break-all;
}

.post-action-bar {
  display: flex;
  justify-content: flex-end;
  gap: 16px;
  margin-top: 10px;
}

.action-text-btn {
  background: none;
  border: none;
  font-size: 10.5px;
  font-family: var(--font-display);
  cursor: pointer;
  padding: 2px 4px;
  color: var(--text-muted);
  transition: var(--transition-smooth);
  user-select: none;
}

.action-text-btn.reply-btn:hover {
  color: var(--neon-blue);
}

.action-text-btn.delete-btn {
  color: rgba(239, 68, 68, 0.5);
}

.action-text-btn.delete-btn:hover {
  color: #ef4444;
  text-shadow: 0 0 8px rgba(239, 68, 68, 0.3);
}

.reply-input-box {
  display: none;
  margin-top: 8px;
  gap: 8px;
  align-items: center;
}

.reply-textarea {
  flex: 1;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 11.5px;
  font-family: var(--font-display);
  height: 32px;
  resize: none;
  line-height: 1.4;
  transition: var(--transition-smooth);
}

.reply-textarea:focus {
  outline: none;
  border-color: var(--neon-blue);
  background: rgba(0, 0, 0, 0.4);
}

.reply-send-btn {
  padding: 7px 14px;
  font-size: 11px;
  height: 32px;
  border-radius: 6px;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-4px); }
  100% { transform: translateY(0px); }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* ==========================================================================
   全局登录/注册模态弹窗 (Global Auth Modal)
   ========================================================================== */
.auth-modal {
  display: none; /* 默认隐藏 */
  position: fixed;
  z-index: 3000; /* 优先级最高，覆盖一切 */
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(3, 3, 3, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.auth-modal.active {
  display: flex;
  opacity: 1;
}

.auth-modal-content {
  background: rgba(20, 20, 25, 0.85);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 90%;
  max-width: 380px;
  padding: 24px;
  position: relative;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.8), 0 0 40px rgba(99, 102, 241, 0.1);
  transform: scale(0.92);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.auth-modal.active .auth-modal-content {
  transform: scale(1);
}

.auth-modal-close {
  position: absolute;
  top: 16px;
  right: 18px;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.auth-modal-close:hover {
  color: #fff;
  transform: scale(1.1);
}

.auth-modal-input {
  width: 100%;
  padding: 11px 14px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-display);
  margin-bottom: 12px;
  box-sizing: border-box;
  transition: var(--transition-smooth);
}

.auth-modal-input:focus {
  outline: none;
  border-color: var(--neon-blue);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.15);
  background: rgba(0, 0, 0, 0.5);
}

.modal-submit-btn {
  width: 100%;
  padding: 11px !important;
  font-size: 13px;
  font-weight: 600;
  margin-top: 6px;
}

/* ==========================================================================
   Navbar 用户状态下拉菜单 (Navbar User Area & Dropdown)
   ========================================================================== */
.nav-user-zone {
  display: flex;
  align-items: center;
}

.nav-auth-trigger-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font-display);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.nav-auth-trigger-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--neon-blue);
  color: #fff;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.15);
}

.nav-user-dropdown {
  position: relative;
  display: inline-block;
}

.nav-username-display {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.25);
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 11.5px;
  font-family: var(--font-display);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.nav-username-display:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--neon-blue);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: #0d0d11;
  border: 1px solid var(--border-color);
  min-width: 110px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  border-radius: 6px;
  z-index: 100;
  overflow: hidden;
}

.dropdown-content a {
  color: var(--text-secondary);
  padding: 8px 12px;
  text-decoration: none;
  display: block;
  font-size: 11px;
  font-family: var(--font-display);
  transition: var(--transition-smooth);
}

.dropdown-content a:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #f87171;
}

.nav-user-dropdown:hover .dropdown-content {
  display: block;
}

/* 局部锁定卡片的悬浮发光 Hover */
.lock-placeholder-card {
  cursor: pointer;
  transition: var(--transition-spring);
}

.lock-placeholder-card:hover {
  border-color: var(--neon-blue);
  background: rgba(59, 130, 246, 0.02);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.05);
}