/* 全局基础重置与深色科技风设计系统 (对标参考站) */
:root {
  --bg-primary: #101412;
  --bg-surface: rgba(26, 33, 29, 0.75);
  --bg-surface-hover: rgba(36, 45, 40, 0.85);
  --accent-lime: #C7F36B;
  --accent-lime-dim: rgba(199, 243, 107, 0.12);
  --text-main: #FFFFFF;
  --text-muted: #9CA3AF;
  --danger: #FF6B6B;
  --danger-dim: rgba(255, 107, 107, 0.12);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(199, 243, 107, 0.35);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  overflow: hidden;
  line-height: 1.6;
  background-image: 
    radial-gradient(circle at 18% 18%, rgba(199, 243, 107, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 82% 82%, rgba(199, 243, 107, 0.03) 0%, transparent 45%);
}

/* 顶部毛玻璃导航 */
.glass-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(16, 20, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  z-index: 100;
  display: flex;
  align-items: center;
}

.header-container {
  width: 94%;
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  font-size: 1.2rem;
  color: var(--accent-lime);
}

.logo-text {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.tag-header-recommend {
  background: var(--accent-lime);
  color: #0D110F;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  margin-left: 6px;
}

.nav-links {
  display: flex;
  gap: 6px;
}

.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
  color: var(--accent-lime);
  background: var(--accent-lime-dim);
  border-color: rgba(199, 243, 107, 0.25);
}

.btn-primary {
  background: var(--accent-lime);
  color: #0E1210;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(199, 243, 107, 0.3);
}

/* 幻灯片视口容器 (纯净全屏无顶栏无底栏) */
.slide-viewport {
  margin-top: 0;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

.slides-track {
  display: flex;
  width: 500%;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-section {
  width: 20%;
  height: 100vh;
  overflow-y: auto;
  padding: 28px 24px 72px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-content, .slide-content {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.tag-pill {
  display: inline-block;
  background: rgba(255, 255, 255, 0.06);
  color: #E2E8F0;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 5px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-glass);
  margin-bottom: 14px;
}

.hero-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.highlight {
  color: var(--accent-lime);
}

.hero-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  max-width: 740px;
  margin: 0 auto 26px auto;
  line-height: 1.65;
}

/* CTA 按钮区 */
.cta-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.btn-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  text-decoration: none;
  text-align: left;
  transition: all 0.25s ease;
}

.primary-cta {
  background: var(--accent-lime);
  color: #0D110F;
}

.primary-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(199, 243, 107, 0.3);
}

.secondary-cta {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

.secondary-cta:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-focus);
  transform: translateY(-3px);
}

.btn-icon-box {
  width: 44px;
  height: 44px;
  background: #3B82F6;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #FFF;
}

.btn-icon-box.ticket-icon {
  background: #F59E0B;
}

.btn-title {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
}

.btn-sub {
  display: block;
  font-size: 0.8rem;
  opacity: 0.8;
}

/* 毛玻璃卡片通用 */
.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}

.glass-card:hover {
  border-color: var(--border-focus);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card-num-badge {
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 0.85rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.2);
  font-family: var(--font-mono);
}

.card-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.glass-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.glass-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 双列布局 (Slide 1, 3, 4) */
.dual-col-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.9fr;
  gap: 48px;
  align-items: center;
  text-align: left;
}

.sub-chapter-tag {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.huge-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.plan-lead-desc {
  font-size: 1.15rem;
  color: #D1D5DB;
  line-height: 1.8;
  margin-bottom: 30px;
}

.footnote-text {
  font-size: 0.82rem;
  color: #6B7280;
}

/* Slide 1 右侧卡片 */
.side-highlight-card {
  padding: 36px 30px;
}

.card-tag-row {
  margin-bottom: 20px;
}

.lime-pill {
  background: var(--accent-lime);
  color: #0D110F;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 4px 14px;
  border-radius: 999px;
}

.side-card-title {
  font-size: 1.65rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.side-card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.pill-group {
  display: flex;
  gap: 10px;
}

.badge-pill {
  background: rgba(199, 243, 107, 0.1);
  color: var(--accent-lime);
  border: 1px solid rgba(199, 243, 107, 0.25);
  font-size: 0.82rem;
  padding: 4px 12px;
  border-radius: 999px;
}

/* Slide 2: 五家 Coding Plan 横评 5 列矩阵 */
.full-width-layout {
  text-align: left;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 16px;
}

.section-title-clean {
  font-size: 1.85rem;
  font-weight: 800;
}

.top-summary-hints {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
  text-align: right;
}

.plans-matrix-5cols {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.plan-box {
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  min-height: auto;
  border-radius: var(--radius-md);
}

.featured-plan {
  border-color: var(--accent-lime);
  box-shadow: 0 0 20px rgba(199, 243, 107, 0.15);
  transform: translateY(-2px);
}

.plan-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
}

.dot-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}
.dot-gray { background: #9CA3AF; }
.dot-purple { background: #A855F7; }
.dot-blue { background: #3B82F6; }
.dot-yellow { color: #EAB308; font-size: 0.85rem; }
.dot-lime { color: var(--accent-lime); font-size: 0.85rem; }

.plan-brand {
  font-weight: 700;
  font-size: 0.92rem;
}

.star-badge {
  color: var(--accent-lime);
  font-size: 0.85rem;
  margin-left: auto;
}

.plan-price {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.highlight-price {
  color: var(--accent-lime);
}

.plan-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  min-height: auto;
  line-height: 1.4;
}

.highlight-sub {
  color: #E2E8F0;
}

.plan-checklist {
  list-style: none;
  font-size: 0.78rem;
  color: #D1D5DB;
  line-height: 1.5;
  margin-bottom: auto;
}

.plan-checklist li {
  margin-bottom: 6px;
}

.plan-bottom-tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.tag-label {
  font-size: 0.7rem;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  padding: 2px 6px;
  border-radius: 4px;
}

.tag-warn {
  background: var(--danger-dim);
  color: var(--danger);
}

.tag-success {
  background: var(--accent-lime-dim);
  color: var(--accent-lime);
}

/* Slide 3: 03 为什么最划算 */
.multiplier-display {
  margin-bottom: 16px;
}

.giant-num {
  font-size: 5rem;
  font-weight: 900;
  color: #FFF;
  line-height: 1;
}

.pricing-mini-table {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  overflow: hidden;
}

.table-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1.6fr 1.4fr 1fr;
  padding: 10px 14px;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-glass);
}

.table-row:last-child {
  border-bottom: none;
}

.table-head {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.featured-row {
  background: rgba(199, 243, 107, 0.06);
}

.font-bold { font-weight: 700; }

.warning-callout-box {
  background: rgba(45, 20, 20, 0.6);
  border: 1px solid rgba(255, 107, 107, 0.35);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.warn-head {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--danger);
  margin-bottom: 6px;
}

.warn-body-en {
  font-size: 0.82rem;
  color: #E5E7EB;
  margin-bottom: 4px;
}

.warn-body-cn {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
}

/* Slide 3 右侧卡片 */
.compare-card-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.compare-card {
  padding: 24px 20px;
  text-align: center;
}

.compare-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.compare-stat {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 8px;
}

.muted-stat {
  color: #9CA3AF;
}

.compare-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.conclusion-box {
  padding: 16px 20px;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.extra-advantage-box {
  padding: 14px 20px;
  font-size: 0.88rem;
  border-color: rgba(199, 243, 107, 0.25);
  display: flex;
  gap: 8px;
}

.ext-tag {
  color: var(--accent-lime);
  font-weight: 700;
}

/* Slide 4: 04 破甲方案来袭 */
.danger-box-card {
  background: rgba(35, 18, 18, 0.6);
  border: 1px solid rgba(255, 107, 107, 0.3);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.danger-head {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--danger);
  margin-bottom: 4px;
}

.danger-desc {
  font-size: 0.85rem;
  color: #D1D5DB;
}

.solution-box-card {
  background: var(--bg-surface);
  border: 1px solid var(--accent-lime);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 0 30px rgba(199, 243, 107, 0.1);
}

.sol-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.sol-icon {
  font-size: 1.4rem;
}

.sol-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent-lime);
}

.sol-subtext {
  font-size: 0.92rem;
  color: #E2E8F0;
  margin-bottom: 20px;
}

.domain-display-box {
  background: #080A09;
  border: 1px dashed rgba(199, 243, 107, 0.4);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent-lime);
  font-weight: 700;
}

/* Slide 4 终端 Mockup */
.terminal-mockup {
  padding: 0;
  overflow: hidden;
  border-color: rgba(255, 255, 255, 0.12);
}

.terminal-bar {
  background: rgba(0, 0, 0, 0.5);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-glass);
}

.term-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.term-title {
  margin-left: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 24px;
}

.step-line {
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  align-items: flex-start;
}

.step-badge {
  color: var(--accent-lime);
  font-size: 1.25rem;
  line-height: 1;
}

.step-detail strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.step-detail p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

.terminal-footer-hint {
  background: rgba(199, 243, 107, 0.08);
  border: 1px solid rgba(199, 243, 107, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.8rem;
  color: var(--accent-lime);
  margin-top: 10px;
  text-align: center;
}

/* 极简悬浮小圆点指示器 (纯净无背景无大边框) */
.floating-dots {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 999;
  background: rgba(16, 20, 18, 0.65);
  padding: 8px 16px;
  border-radius: 999px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.dot.active {
  background: var(--accent-lime);
  width: 26px;
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(199, 243, 107, 0.45);
}

/* 页面内嵌入式高质感下载胶囊按钮 */
.btn-slide-dl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent-lime);
  color: #0D110F;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 9px 20px;
  border-radius: 999px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(199, 243, 107, 0.25);
}

.btn-slide-dl:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(199, 243, 107, 0.4);
}

@media (max-width: 1100px) {
  .dual-col-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .plans-matrix-5cols {
    grid-template-columns: 1fr;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .nav-links, .keyboard-tip {
    display: none;
  }
}

/* 微信/QQ 闲鱼购买防屏蔽弹窗 */
.wechat-modal-mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
  animation: fadeIn 0.25s ease-out;
}

.wechat-modal-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
  text-align: left;
}

.wechat-modal-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.wechat-warn-icon {
  font-size: 1.5rem;
}

.wechat-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFF;
  margin: 0;
  flex: 1;
}

.close-modal-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
}

.close-modal-btn:hover {
  color: #FFF;
  background: rgba(255, 255, 255, 0.1);
}

.wechat-desc {
  font-size: 0.9rem;
  color: #E2E8F0;
  line-height: 1.6;
  margin-bottom: 14px;
}

.wechat-tip-box {
  background: var(--accent-lime-dim);
  border: 1px solid rgba(199, 243, 107, 0.3);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.88rem;
  color: var(--accent-lime);
  margin-bottom: 14px;
}

.wechat-subdesc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.wechat-copy-row {
  display: flex;
  gap: 8px;
}

.wechat-copy-row .input-text {
  flex: 1;
  font-size: 0.85rem;
}

/* ── QQ 交流群：点击整块复制群号 ───────────────────────────── */
.contact-qq-box {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid rgba(199, 243, 107, 0.35);
  border-radius: 10px;
  background: var(--accent-lime-dim);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.contact-qq-box:hover {
  border-color: var(--accent-lime);
  background: rgba(199, 243, 107, 0.2);
}

.contact-qq-icon {
  font-size: 0.95rem;
}

.contact-qq-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.contact-qq-number {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-lime);
  letter-spacing: 0.5px;
  font-variant-numeric: tabular-nums;
}

.contact-qq-copy {
  font-size: 0.72rem;
  color: var(--text-muted);
  padding-left: 4px;
  border-left: 1px solid rgba(199, 243, 107, 0.25);
}