/* ===== Presentation Mode - 16:9 录屏专用 ===== */

/* Override mobile constraints */
body.presentation-mode {
  max-width: none;
  margin: 0;
  overflow: hidden;
  cursor: none;
}

/* ===== Reveal Animation ===== */
.pres-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.pres-reveal.pres-in {
  opacity: 1;
  transform: translateY(0);
}
.pres-delay-1 { transition-delay: 0.15s; }
.pres-delay-2 { transition-delay: 0.3s; }
.pres-delay-3 { transition-delay: 0.45s; }
.pres-delay-4 { transition-delay: 0.6s; }

/* ===== Section Base ===== */
.pres-section {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 60px 80px;
  background: var(--bg);
  overflow: hidden;
}
.pres-section:nth-child(even) {
  background: var(--bg2);
}

/* ===== Section Title ===== */
.pres-section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}
.pres-section-line {
  width: 64px;
  height: 3px;
  background: var(--green-grad);
  border-radius: 2px;
  margin-bottom: 40px;
}

/* ===== Control Bar ===== */
.pres-ctrl-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 999;
  transition: opacity 0.5s;
}
.pres-ctrl-bar.pres-hidden {
  opacity: 0;
  pointer-events: none;
}
.pres-btn {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 28px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s;
}
.pres-start {
  background: var(--green-grad);
  color: #000;
}
.pres-start:hover {
  box-shadow: 0 0 20px rgba(0,200,83,0.4);
}
.pres-exit {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--rule);
}
.pres-exit:hover {
  color: var(--ink);
  border-color: var(--ink);
}
.pres-hint {
  font-size: 12px;
  color: var(--weak);
}

/* ===== Progress Bar ===== */
.pres-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(0,0,0,0.3);
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.5s;
}
.pres-progress.pres-active {
  opacity: 1;
}
.pres-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--green-grad);
  transition: width 0.3s ease;
  box-shadow: 0 0 8px rgba(0,200,83,0.5);
}

/* ===== Navigation Dots ===== */
.pres-dots {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.5s;
}
.pres-dots.pres-active {
  opacity: 0.6;
}
.pres-dots.pres-active:hover {
  opacity: 1;
}
.pres-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--rule);
  cursor: pointer;
  transition: all 0.3s;
}
.pres-dot.pres-dot-active {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0,200,83,0.5);
  transform: scale(1.3);
}

/* ===== 1. Hero ===== */
.pres-hero {
  background: #000;
}
.pres-hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.pres-hero-overlay {
  display: none;
}
.pres-hero-content {
  position: absolute;
  bottom: 80px;
  left: 0;
  right: 0;
  z-index: 2;
  text-align: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.pres-hero-content.pres-fade-in {
  opacity: 1;
}
.pres-hero-content.pres-fade-out {
  opacity: 0;
}
.pres-logo {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--ink);
  opacity: 0.7;
}
.pres-logo .dot { color: var(--accent); }
.pres-hero-title {
  font-size: 48px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
}
.pres-hero-sub {
  font-size: 20px;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
  text-shadow: 0 2px 12px rgba(0,0,0,0.8);
}

/* ===== 2. 三代技术演进 ===== */
.pres-gen-grid {
  display: flex;
  gap: 32px;
  max-width: 1200px;
  width: 100%;
  justify-content: center;
}
.pres-gen-card {
  flex: 1;
  max-width: 360px;
  padding: 32px 28px;
  background: linear-gradient(180deg, rgba(35,42,61,0.6) 0%, rgba(26,31,46,0.4) 100%);
  border: 1px solid var(--rule);
  border-radius: 12px;
  text-align: center;
  position: relative;
}
.pres-gen-active {
  border-color: var(--accent);
  box-shadow: 0 0 30px rgba(0,200,83,0.1);
}
.pres-gen-tag {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.pres-gen-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}
.pres-gen-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 20px;
}
.pres-gen-badge {
  display: inline-block;
  font-size: 12px;
  padding: 4px 16px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  color: var(--weak);
  border: 1px solid var(--rule);
}
.pres-gen-badge-active {
  background: var(--green-grad);
  color: #000;
  border-color: transparent;
  font-weight: 600;
}

/* ===== 3. 技术硬实力 ===== */
.pres-strength-data {
  display: flex;
  justify-content: center;
  gap: 80px;
  margin-bottom: 16px;
}
.pres-strength-item {
  text-align: center;
}
.pres-strength-num {
  font-size: 80px;
  font-weight: 800;
  line-height: 1;
  background: var(--silver-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.pres-strength-label {
  font-size: 16px;
  color: var(--muted);
  margin-top: 8px;
}
.pres-strength-foot {
  font-size: 14px;
  color: var(--weak);
  text-align: center;
  margin-bottom: 40px;
}
.pres-strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  width: 100%;
}
.pres-strength-adv {
  padding: 24px;
  background: rgba(35,42,61,0.4);
  border: 1px solid var(--rule);
  border-radius: 10px;
  text-align: center;
}
.pres-strength-adv svg {
  margin: 0 auto 16px;
  color: var(--accent);
}
.pres-adv-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.pres-adv-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ===== 4. 在售产品 ===== */
.pres-products-grid {
  display: flex;
  gap: 40px;
  max-width: 900px;
  width: 100%;
  justify-content: center;
}
.pres-product-card {
  flex: 1;
  max-width: 420px;
  background: rgba(35,42,61,0.4);
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
}
.pres-product-badge {
  font-size: 13px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  text-align: center;
  border-bottom: 1px solid var(--rule);
}
.pres-product-badge-active {
  background: var(--green-grad);
  color: #000;
  font-weight: 600;
}
.pres-product-img,
.pres-product-video {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.pres-product-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  padding: 20px 24px 8px;
}
.pres-product-feat {
  font-size: 14px;
  color: var(--muted);
  padding: 4px 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pres-product-feat .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ===== 5. 产品参数详情 ===== */
.pres-product-detail {
  padding: 30px 80px;
}
.pres-detail-table {
  width: 100%;
  max-width: 750px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--rule);
}
.pres-detail-row {
  display: flex;
  border-bottom: 1px solid var(--rule);
}
.pres-detail-row:last-child {
  border-bottom: none;
}
.pres-detail-cell {
  flex: 1;
  padding: 6px 12px;
  font-size: 13px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pres-detail-cell:first-child {
  text-align: left;
  justify-content: flex-start;
  color: var(--muted);
}
.pres-detail-header .pres-detail-cell {
  font-weight: 700;
  color: var(--ink);
  background: rgba(35,42,61,0.6);
  font-size: 14px;
}
.pres-detail-gen3 {
  color: var(--accent);
  font-weight: 600;
}
.pres-detail-dash {
  color: var(--weak);
}
.pres-detail-guide {
  display: flex;
  gap: 20px;
  margin-top: 20px;
  max-width: 800px;
}
.pres-guide-card {
  flex: 1;
  padding: 14px 20px;
  background: rgba(35,42,61,0.4);
  border: 1px solid var(--rule);
  border-radius: 8px;
  text-align: center;
}
.pres-guide-q {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}
.pres-guide-a {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
}

/* ===== 6. 九格AI视觉（放大到全屏宽，文字同步放大） ===== */
.pres-ngv {
  background: #060810;
  padding: 40px 40px;
}
.pres-ngv .ngv-header {
  margin-bottom: 20px;
}
.pres-ngv .ngv-tag {
  font-size: 14px;
  padding: 5px 18px;
}
.pres-ngv .ngv-title {
  font-size: 32px;
}
.pres-ngv .ngv-subtitle {
  font-size: 16px;
}
.pres-ngv .ngv-stage-wrap {
  max-width: 1700px;
  width: 95%;
}
.pres-ngv .ngv-stage {
  border-radius: 16px;
}
.pres-ngv .ngv-img-container img {
  object-fit: contain;
}
.pres-ngv .ngv-hud-line {
  font-size: 14px !important;
}
.pres-ngv .ngv-hud {
  top: 12px; left: 12px; right: 12px;
  gap: 6px;
}
.pres-ngv .ngv-data-item {
  font-size: 13px !important;
}
.pres-ngv .ngv-data-item .lbl {
  font-size: 10px !important;
}
.pres-ngv .ngv-data-item .v {
  font-size: 16px !important;
}
.pres-ngv .ngv-data-panel {
  bottom: 12px; left: 12px; right: 12px;
  gap: 12px;
}
.pres-ngv .ngv-progress-bar {
  height: 5px;
  margin-top: 16px;
}
.pres-ngv .ngv-counter {
  font-size: 14px;
  margin-top: 10px;
}
.pres-ngv .ngv-counter .cur {
  font-size: 18px;
}
.pres-ngv .ngv-complete-title {
  font-size: 20px !important;
}
.pres-ngv .ngv-complete-list li {
  font-size: 14px !important;
}
.pres-ngv .ngv-corner {
  width: 20px !important;
  height: 20px !important;
}

/* ===== 6. AI籽型展示 ===== */
.pres-seeds-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1100px;
  width: 100%;
}
.pres-seed-card {
  background: rgba(35,42,61,0.4);
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}
.pres-seed-img-wrap {
  width: 100%;
  aspect-ratio: 1;
  position: relative;
  overflow: hidden;
  background: #000;
}
.pres-seed-img-wrap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.6s ease;
}
.pres-seed-img-wrap img.pres-seed-active {
  opacity: 1;
}
.pres-seed-info {
  padding: 16px;
  text-align: center;
}
.pres-seed-label {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}
.pres-seed-gen {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 8px;
}
.pres-seed-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* ===== 7. 核心技术能力 ===== */
.pres-core-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  width: 100%;
}
.pres-core-card {
  padding: 28px 24px;
  background: rgba(35,42,61,0.4);
  border: 1px solid var(--rule);
  border-radius: 10px;
  text-align: center;
  position: relative;
}
.pres-core-card .corner {
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--accent);
  border-style: solid;
}
.pres-core-card .corner.tl { top: 0; left: 0; border-width: 1px 0 0 1px; }
.pres-core-card .corner.tr { top: 0; right: 0; border-width: 1px 1px 0 0; }
.pres-core-card .corner.bl { bottom: 0; left: 0; border-width: 0 0 1px 1px; }
.pres-core-card .corner.br { bottom: 0; right: 0; border-width: 0 1px 1px 0; }
.pres-core-icon {
  width: 36px;
  height: 36px;
  margin: 0 auto 16px;
  color: var(--accent);
}
.pres-core-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.pres-core-desc {
  font-size: 13px;
  color: var(--muted);
}

/* ===== 8. 行业应用 ===== */
.pres-industry-grid {
  display: flex;
  gap: 32px;
  max-width: 900px;
  width: 100%;
  justify-content: center;
}
.pres-industry-card {
  flex: 1;
  max-width: 280px;
  padding: 28px;
  background: rgba(35,42,61,0.4);
  border: 1px solid var(--rule);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.pres-industry-icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  margin-bottom: 16px;
}
.pres-industry-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.pres-industry-desc {
  font-size: 13px;
  color: var(--muted);
}

/* ===== 9. 联系方式 ===== */
.pres-contact {
  background: linear-gradient(180deg, var(--bg) 0%, #060810 100%);
  text-align: center;
}
.pres-contact-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 12px;
}
.pres-contact-sub {
  font-size: 18px;
  color: var(--muted);
  margin-bottom: 20px;
}
.pres-contact-line {
  width: 64px;
  height: 3px;
  background: var(--green-grad);
  border-radius: 2px;
  margin: 0 auto 40px;
}
.pres-contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
}
.pres-contact-phone {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}
.pres-contact-wx {
  font-size: 18px;
  color: var(--ink);
}
.pres-contact-company {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 8px;
}
.pres-contact-brand {
  font-size: 14px;
  color: var(--weak);
  letter-spacing: 0.05em;
}