/* ===== NewAI Section Styles ===== */
/* NewAI章节样式 - 各个特定章节的样式 */

/* ========== 通用章节元素 - Common Section Elements ========== */
.section-label {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--newai-primary);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0.8;
}

.section-title {
  font-family: var(--font-chinese);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 30px;
  line-height: 1.4;
}

.section-desc {
  font-size: 17px;
  color: var(--newai-text-secondary);
  max-width: 700px;
  margin-bottom: 50px;
  font-weight: 300;
}

/* ========== Hero Section ========== */
.hero {
  text-align: center;
  min-height: 100vh;
}

.hero-title {
  font-family: var(--font-chinese);
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 30px;
  line-height: 1.3;
}

.hero-title .highlight {
  color: var(--newai-primary-light);
  text-shadow: 0 0 30px var(--newai-primary);
}

.hero-subtitle {
  font-size: 20px;
  color: var(--newai-text-secondary);
  max-width: 600px;
  margin: 0 auto 50px;
  font-weight: 300;
}

.hero-visual {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto 50px;
  display: block;
  cursor: default;
  transition: transform 0.3s ease;
}

/* Easter egg: subtle hover hint for students */
.hero-visual:hover {
  transform: scale(1.02);
}

.hero-visual:hover .hero-logo {
  filter: drop-shadow(0 0 35px rgba(64, 186, 171, 0.7));
}

.hero-logo {
  width: 100%;
  height: 100%;
  background-image: url('../images/logo.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 0 30px rgba(64, 186, 171, 0.5));
}

.hero-rings {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 280px;
  border: 1px solid var(--newai-border-subtle);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}

/* 卫星轨道 */
.hero-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 240px;
  height: 240px;
  animation: spin 8s linear infinite;
}

/* 卫星小球 */
.hero-satellite {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--newai-primary-light);
  border-radius: 50%;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  box-shadow:
    0 0 10px var(--newai-primary),
    0 0 20px var(--newai-primary-glow);
}

.hero-satellite.satellite-2 {
  top: auto;
  bottom: 20%;
  left: auto;
  right: 0;
  transform: none;
  width: 8px;
  height: 8px;
  background: var(--newai-accent);
  animation: pulse-glow 2s ease-in-out infinite;
}

/* ========== Problem Section ========== */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.problem-solution {
  margin-top: 20px;
  padding-top: 15px;
  border-top: 1px solid rgba(255, 170, 0, 0.2);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
}

.solution-arrow {
  color: var(--newai-warning);
  font-weight: bold;
  flex-shrink: 0;
}

.solution-label {
  color: var(--newai-warning);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  text-shadow: 0 0 10px rgba(255, 170, 0, 0.4);
}

.solution-text {
  color: var(--newai-warning);
  line-height: 1.5;
}

/* ========== Quote Section ========== */
.quote-section {
  text-align: center;
  min-height: 70vh;
}

.quote-text {
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 300;
  color: #fff;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.quote-text .emphasis {
  color: var(--newai-warning);
  font-weight: 500;
}

.quote-paths {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.paths-label {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--newai-text-muted);
  letter-spacing: 1px;
  width: 100%;
  text-align: center;
}

.paths-items {
  display: flex;
  align-items: center;
  gap: 15px;
}

.paths-item {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--newai-warning);
  padding: 8px 20px;
  border: 1px solid var(--newai-warning);
  background: rgba(255, 170, 0, 0.1);
  text-shadow: 0 0 10px rgba(255, 170, 0, 0.4);
}

.paths-divider {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--newai-warning);
}

/* ========== Philosophy Section ========== */
.philosophy-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.wave-icon {
  width: 160px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--newai-primary-light);
}

.wave-icon svg {
  width: 120px;
  height: 60px;
}

.wave-line {
  stroke-linecap: round;
}

.philosophy-text {
  max-width: 500px;
  text-align: left;
}

.philosophy-text h2 {
  font-family: var(--font-chinese);
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.4;
}

.philosophy-text h2 .not {
  color: var(--newai-text-muted);
  text-decoration: line-through;
}

.philosophy-text h2 .yes {
  color: var(--newai-primary-light);
  text-shadow: 0 0 20px var(--newai-primary);
}

.philosophy-text p {
  font-size: 15px;
  color: var(--newai-text-secondary);
  line-height: 1.8;
}

/* ========== Accelerator Metaphor ========== */
.accelerator-box {
  max-width: 700px;
  margin: 60px auto 0;
  padding: 35px 40px;
  background: linear-gradient(135deg, rgba(255, 170, 0, 0.08), rgba(64, 186, 171, 0.05));
  border: 1px solid rgba(255, 170, 0, 0.3);
  border-left: 4px solid var(--newai-warning);
  display: flex;
  gap: 30px;
  align-items: flex-start;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%);
}

.accelerator-icon {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.accelerator-icon svg {
  width: 40px;
  height: 40px;
}

.accelerator-content {
  flex: 1;
}

.accelerator-title {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--newai-warning);
  letter-spacing: 2px;
  margin-bottom: 15px;
  text-shadow: 0 0 15px rgba(255, 170, 0, 0.4);
}

.accelerator-content p {
  font-size: 15px;
  color: var(--newai-text-secondary);
  line-height: 1.9;
}

.accelerator-content strong {
  color: var(--newai-text-primary);
}

.accelerator-highlight {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 16px;
  background: rgba(255, 170, 0, 0.15);
  border: 1px solid rgba(255, 170, 0, 0.4);
  color: var(--newai-warning);
  font-weight: 500;
  font-size: 16px;
}

/* ========== Method Section ========== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.method-card {
  background: var(--newai-bg-panel);
  border: 1px solid var(--newai-border-subtle);
  padding: 25px 20px;
  text-align: center;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.method-card:hover {
  border-color: var(--newai-primary);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(64, 186, 171, 0.15);
}

.method-number {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--newai-primary);
  opacity: 0.3;
  margin-bottom: 10px;
}

.method-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 15px;
  background: rgba(64, 186, 171, 0.1);
  border: 1px solid var(--newai-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--newai-primary-light);
}

.method-icon svg {
  width: 26px;
  height: 26px;
}

.method-card h3 {
  font-family: var(--font-chinese);
  font-size: 15px;
  font-weight: 600;
  color: var(--newai-primary-light);
  margin-bottom: 8px;
}

.method-card p {
  font-size: 12px;
  color: var(--newai-text-secondary);
  line-height: 1.6;
}

/* ========== Hexagon Visualization ========== */
.hex-visualization {
  margin: 50px auto 60px;
  text-align: center;
}

.hex-svg {
  width: 100%;
  max-width: 600px;
  height: auto;
  margin: 0 auto;
  display: block;
}

.hex-caption {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.hex-caption-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--newai-text-secondary);
}

.hex-caption-item .dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.hex-caption-item .dot.gold {
  background: var(--newai-warning);
  box-shadow: 0 0 8px var(--newai-warning);
}

.hex-caption-item .dot.teal {
  background: var(--newai-primary);
  box-shadow: 0 0 8px var(--newai-primary);
}

.hex-caption-item .dot.grey {
  background: rgba(64, 186, 171, 0.4);
  border: 1px dashed rgba(64, 186, 171, 0.6);
}

/* ========== Path Timeline ========== */
.path-timeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 40px;
  padding: 20px 30px;
  background: rgba(64, 186, 171, 0.05);
  border: 1px solid var(--newai-border-subtle);
  flex-wrap: wrap;
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.timeline-date {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  color: var(--newai-warning);
  text-shadow: 0 0 10px rgba(255, 170, 0, 0.4);
}

.timeline-text {
  font-size: 13px;
  color: var(--newai-text-secondary);
}

.timeline-divider {
  width: 30px;
  height: 1px;
  background: linear-gradient(90deg, var(--newai-warning), var(--newai-primary));
}

/* ========== Counter Section (战绩) ========== */
.counter-section {
  background: linear-gradient(180deg, rgba(255, 170, 0, 0.03) 0%, transparent 50%, rgba(64, 186, 171, 0.03) 100%);
  padding: 100px 40px;
}

.counter-intro {
  max-width: 800px;
  margin: 0 auto 60px;
  text-align: center;
}

.counter-badge-top {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  color: var(--newai-warning);
  padding: 8px 20px;
  border: 1px solid var(--newai-warning);
  background: rgba(255, 170, 0, 0.1);
  margin-bottom: 30px;
  letter-spacing: 2px;
}

.counter-headline {
  font-size: 20px;
  color: var(--newai-text-primary);
  line-height: 1.8;
  margin-bottom: 15px;
}

.counter-subline {
  font-size: 15px;
  color: var(--newai-text-secondary);
  line-height: 1.8;
}

/* ========== Track Section ========== */
.track-section {
  margin-bottom: 60px;
}

.track-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--newai-border-subtle);
}

.track-label {
  font-family: var(--font-display);
  font-size: 10px;
  color: var(--newai-warning);
  padding: 4px 10px;
  border: 1px solid var(--newai-warning);
  letter-spacing: 1px;
}

.track-title {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--newai-primary-light);
  letter-spacing: 2px;
}

.track-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
}

.track-card {
  background: var(--newai-bg-panel);
  border: 1px solid var(--newai-border-subtle);
  padding: 25px;
  transition: all 0.3s ease;
}

.track-card:hover {
  border-color: var(--newai-primary);
  box-shadow: 0 0 20px rgba(64, 186, 171, 0.15);
}

.track-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--newai-border-subtle);
}

.track-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--newai-primary-light);
}

.track-icon svg {
  width: 24px;
  height: 24px;
}

.track-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--newai-primary-light);
  letter-spacing: 1px;
}

.track-badge-new {
  font-family: var(--font-display);
  font-size: 9px;
  color: var(--newai-warning);
  padding: 3px 8px;
  border: 1px solid var(--newai-warning);
  background: rgba(255, 170, 0, 0.1);
  margin-left: auto;
  letter-spacing: 0.5px;
}

.track-achievements {
  list-style: none;
  padding: 0;
  margin: 0;
}

.track-achievements li {
  font-size: 13px;
  color: var(--newai-text-secondary);
  padding: 8px 0;
  border-bottom: 1px solid rgba(64, 186, 171, 0.1);
  line-height: 1.5;
}

.track-achievements li:last-child {
  border-bottom: none;
}

.track-achievements .year {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--newai-warning);
  margin-right: 8px;
}

.track-more {
  text-align: center;
  margin-top: 25px;
  font-size: 13px;
  color: var(--newai-text-muted);
  font-style: italic;
}

.track-coming {
  text-align: center;
  padding: 40px;
  color: var(--newai-text-muted);
  font-size: 14px;
  border: 1px dashed var(--newai-border-subtle);
}

/* ========== Time Concern - 视觉锤 ========== */
.time-concern {
  text-align: center;
  margin: 50px auto 60px;
  padding: 40px;
  max-width: 900px;
  /* 紫色渐变背景 */
  background: linear-gradient(135deg,
    rgba(168, 85, 247, 0.15) 0%,
    rgba(192, 132, 252, 0.08) 100%);
  /* 炫彩紫色边框 */
  border: 2px solid var(--newai-purple);
  border-radius: 12px;
  /* 紫色外发光 */
  box-shadow:
    0 0 30px rgba(168, 85, 247, 0.3),
    0 0 60px rgba(168, 85, 247, 0.15),
    inset 0 0 40px rgba(168, 85, 247, 0.05);
  position: relative;
  animation: pulse-purple 3s ease-in-out infinite;
}

@keyframes pulse-purple {
  0%, 100% {
    box-shadow:
      0 0 30px rgba(168, 85, 247, 0.3),
      0 0 60px rgba(168, 85, 247, 0.15),
      inset 0 0 40px rgba(168, 85, 247, 0.05);
  }
  50% {
    box-shadow:
      0 0 40px rgba(168, 85, 247, 0.4),
      0 0 80px rgba(168, 85, 247, 0.2),
      inset 0 0 50px rgba(168, 85, 247, 0.08);
  }
}

.concern-question {
  font-size: 20px;
  font-weight: 700;
  /* 紫色渐变文字 */
  background: linear-gradient(135deg, var(--newai-purple-bright), var(--newai-purple-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  font-family: var(--font-chinese);
  /* 紫色文字发光 */
  filter: drop-shadow(0 0 8px rgba(168, 85, 247, 0.5));
}

.concern-answer-label {
  font-size: 18px;
  font-weight: 900;
  color: var(--newai-purple-bright);
  margin-bottom: 20px;
  font-family: var(--font-label);
  letter-spacing: 2px;
  text-transform: uppercase;
  /* 强烈紫色发光 */
  text-shadow:
    0 0 10px var(--newai-purple-glow),
    0 0 20px var(--newai-purple-glow),
    0 0 30px rgba(168, 85, 247, 0.3);
}

.concern-answer {
  font-size: 16px;
  line-height: 1.9;
  color: var(--newai-text-primary);
  font-family: var(--font-chinese);
}

.golden-start-btn {
  display: inline-block;
  margin-top: 30px;
  padding: 12px 28px;
  /* WeChat fallback - hardcoded values before CSS variables */
  font-family: 'PingFang SC', 'Noto Sans SC', sans-serif;
  font-family: var(--font-chinese);
  font-size: 15px;
  font-weight: 500;
  color: #d8b4fe;
  color: var(--newai-purple-light);
  background-color: transparent;
  border: 1px solid #a855f7;
  border: 1px solid var(--newai-purple);
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  -webkit-appearance: none;
  appearance: none;
}

.golden-start-btn:hover {
  color: #fff;
  background: rgba(168, 85, 247, 0.15);
  border-color: var(--newai-purple-bright);
  box-shadow: 0 0 20px var(--newai-purple-glow);
}

.not-exception-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--newai-text-secondary);
  margin: 40px 0 30px 0;
  font-family: var(--font-chinese);
  text-align: center;
}

/* ========== Ratio Comparison ========== */
.ratio-comparison {
  margin-bottom: 50px;
}

.ratio-title {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--newai-text-secondary);
  letter-spacing: 3px;
  text-align: center;
  margin-bottom: 30px;
}

.amt-gold {
  color: var(--newai-warning);
  text-shadow: 0 0 10px rgba(255, 170, 0, 0.5);
}

.ratio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.ratio-card {
  background: var(--newai-bg-panel);
  border: 1px solid var(--newai-border-subtle);
  padding: 25px 20px;
  text-align: center;
  transition: all 0.3s ease;
}

.ratio-card.newai {
  border-color: var(--newai-primary);
  box-shadow: 0 0 30px rgba(64, 186, 171, 0.2);
  background: linear-gradient(135deg, rgba(64, 186, 171, 0.1), rgba(5, 20, 20, 0.9));
}

.ratio-card.school {
  opacity: 0.7;
}

.ratio-org {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 15px;
}

.ratio-card.newai .ratio-org {
  color: var(--newai-primary-light);
  text-shadow: 0 0 15px var(--newai-primary);
}

.ratio-card.school .ratio-org {
  color: var(--newai-text-muted);
}

.ratio-numbers {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 5px;
  margin-bottom: 10px;
}

.ratio-count {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
}

.ratio-card.newai .ratio-count {
  color: var(--newai-primary-light);
}

.ratio-card.school .ratio-count {
  color: var(--newai-text-secondary);
}

.ratio-divider {
  font-size: 24px;
  color: var(--newai-text-muted);
}

.ratio-total {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--newai-text-muted);
}

.ratio-percent {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

.ratio-card.newai .ratio-percent {
  color: var(--newai-warning);
  text-shadow: 0 0 10px rgba(255, 170, 0, 0.5);
}

.ratio-card.school .ratio-percent {
  color: var(--newai-text-muted);
}

.ratio-label {
  font-size: 11px;
  color: var(--newai-text-muted);
  line-height: 1.4;
}

/* ========== Final CTA Section ========== */
.final-cta {
  text-align: center;
  padding: 100px 40px 80px;
  background: linear-gradient(180deg, transparent 0%, rgba(64, 186, 171, 0.03) 50%, rgba(64, 186, 171, 0.05) 100%);
}

.cta-content {
  margin-bottom: 50px;
}

.cta-title {
  font-size: clamp(26px, 4vw, 38px);
  color: #fff;
  margin-bottom: 15px;
}

.cta-subtitle {
  font-size: 17px;
  color: var(--newai-text-secondary);
  line-height: 1.8;
}

.cta-footer {
  margin-top: 60px;
}

.cta-footer p {
  font-size: 14px;
  color: var(--newai-text-muted);
  line-height: 1.8;
}

/* ========== Footer ========== */
.footer {
  text-align: center;
  padding: 60px 40px;
  border-top: 1px solid var(--newai-border-subtle);
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--newai-primary);
  text-shadow: 0 0 20px var(--newai-primary);
  margin-bottom: 10px;
}

.footer-motto {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  color: var(--newai-warning);
  letter-spacing: 2px;
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(255, 170, 0, 0.3);
}

.footer-tagline {
  font-size: 18px;
  color: var(--newai-text-secondary);
  margin-bottom: 15px;
}

.footer-origin {
  font-family: var(--font-label);
  font-size: 13px;
  color: var(--newai-text-secondary);
  margin-bottom: 8px;
  opacity: 0.8;
}

.footer-tagline {
  font-family: var(--font-chinese);
  font-size: 13px;
  color: var(--newai-primary-light);
  margin-bottom: 20px;
  opacity: 0.9;
}

.footer-info {
  font-size: 13px;
  color: var(--newai-text-muted);
  margin-bottom: 20px;
}

.footer-copy {
  font-size: 11px;
  color: var(--newai-text-muted);
}

.footer-campuses {
  font-family: var(--font-label);
  font-size: 12px;
  color: var(--newai-text-muted);
  margin-bottom: 10px;
  opacity: 0.7;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  letter-spacing: 1.5px;
  word-spacing: 3px;
}

.footer-china {
  font-family: var(--font-chinese);
  font-size: 12px;
  color: var(--newai-text-muted);
  margin-bottom: 15px;
  opacity: 0.6;
}

.footer-partner-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--newai-primary);
  text-decoration: none;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 20px;
  border: 1px solid var(--newai-border-subtle);
  margin-top: 20px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.footer-partner-link:hover {
  border-color: var(--newai-primary);
  box-shadow: 0 0 15px rgba(64, 186, 171, 0.3);
  background: rgba(64, 186, 171, 0.1);
}

/* ========== Form Switcher ========== */
.form-switcher {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.form-tab {
  flex: 1;
  /* WeChat fallback - hardcoded values before CSS variables */
  font-family: 'Orbitron', -apple-system, sans-serif;
  font-family: var(--font-display);
  font-size: 12px;
  padding: 15px 30px;
  background-color: transparent;
  background: transparent;
  border: 1px solid #1a2f2f;
  border: 1px solid var(--newai-border-subtle);
  border-bottom: none;
  color: #5a7a7a;
  color: var(--newai-text-muted);
  cursor: pointer;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.3s ease;
  /* Reset button appearance for WeChat */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  box-sizing: border-box;
}

.form-tab:first-child {
  border-radius: 8px 0 0 0;
}

.form-tab:last-child {
  border-radius: 0 8px 0 0;
  border-left: none;
}

.form-tab:hover {
  color: #40baab;
  color: var(--newai-primary);
  background: rgba(64, 186, 171, 0.05);
}

.form-tab.active {
  color: #5ce0d0;
  color: var(--newai-primary-light);
  background-color: #0a1414;
  background: linear-gradient(135deg, rgba(5, 20, 20, 0.95), rgba(10, 30, 30, 0.9));
  border-color: #40baab;
  border-color: var(--newai-primary);
  border-bottom: 1px solid transparent;
  position: relative;
}

.form-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(135deg, rgba(5, 20, 20, 0.95), rgba(10, 30, 30, 0.9));
}

/* ========== Utility Classes ========== */
.highlight-gold {
  color: var(--newai-warning);
  font-weight: 600;
  text-shadow: 0 0 15px rgba(255, 170, 0, 0.5);
}

.highlight-green {
  color: var(--newai-primary-light);
  font-weight: 600;
  text-shadow: 0 0 15px var(--newai-primary-glow);
}

.highlight-gold-dim {
  color: rgba(255, 170, 0, 0.5);
  text-decoration: line-through;
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 响应式 - Responsive ========== */
@media (max-width: 900px) {
  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  .track-grid {
    grid-template-columns: 1fr;
  }

  .ratio-grid {
    grid-template-columns: 1fr;
    max-width: 300px;
  }
}

@media (max-width: 600px) {
  .accelerator-box {
    flex-direction: column;
    text-align: center;
    padding: 30px 25px;
  }

  .path-timeline {
    flex-direction: column;
    gap: 15px;
  }

  .timeline-divider {
    width: 1px;
    height: 20px;
    background: linear-gradient(180deg, var(--newai-warning), var(--newai-primary));
  }

  .philosophy-visual {
    flex-direction: column;
    gap: 40px;
  }

  .philosophy-text {
    text-align: center;
  }
}

@media (max-width: 500px) {
  .method-grid {
    grid-template-columns: 1fr;
  }
}