/* ===========================================
   爱映工坊 · 官网样式
   设计参考: Notion / Figma 深色风格
   =========================================== */

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

:root {
  /* 主背景 - Notion 深色调 */
  --bg-0: #0a0a0a;
  --bg-1: #111113;
  --bg-2: #161618;
  --bg-3: #1c1c1f;
  --bg-card: rgba(28, 28, 31, 0.6);
  --bg-card-hover: rgba(38, 38, 42, 0.7);

  /* 边框 */
  --border-1: rgba(255, 255, 255, 0.06);
  --border-2: rgba(255, 255, 255, 0.1);
  --border-3: rgba(255, 255, 255, 0.16);

  /* 文字 */
  --text-1: #ffffff;
  --text-2: #d4d4d8;
  --text-3: #a1a1aa;
  --text-4: #71717a;
  --text-5: #52525b;

  /* 强调色 - 蓝紫渐变 */
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.15);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-text: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #f472b6 100%);
  --gradient-bg: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.08) 0%, transparent 60%);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-0);
  color: var(--text-2);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===========================================
   顶部导航
   =========================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-1);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text-1);
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--gradient-primary);
  position: relative;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
}

.brand-mark::after {
  content: '';
  position: absolute;
  inset: 5px;
  background: var(--bg-0);
  border-radius: 4px;
}

.brand-mark::before {
  content: '';
  position: absolute;
  inset: 8px;
  background: var(--gradient-primary);
  border-radius: 2px;
  z-index: 1;
}

.brand-text {
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a {
  color: var(--text-3);
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text-1);
}

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

.link-quiet {
  color: var(--text-3);
  font-size: 14px;
  font-weight: 500;
}

.link-quiet:hover {
  color: var(--text-1);
}

/* ===========================================
   通用按钮
   =========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  border: none;
  outline: none;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  border-radius: 10px;
}

.btn-primary {
  background: var(--text-1);
  color: var(--bg-0);
  font-weight: 600;
}

.btn-primary:hover {
  background: #e5e5e7;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
}

.btn-ghost {
  background: transparent;
  color: var(--text-1);
  border: 1px solid var(--border-2);
}

.btn-ghost:hover {
  background: var(--bg-2);
  border-color: var(--border-3);
}

/* ===========================================
   Hero
   =========================================== */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(139, 92, 246, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(59, 130, 246, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 20% 60%, rgba(236, 72, 153, 0.08), transparent);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 32px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-1);
  margin-bottom: 24px;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  font-size: clamp(16px, 1.5vw, 19px);
  color: var(--text-3);
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto 40px;
}

.hero-sub b {
  color: var(--text-1);
  font-weight: 600;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  gap: 24px;
  justify-content: center;
  font-size: 13px;
  color: var(--text-4);
  flex-wrap: wrap;
  margin-bottom: 72px;
}

/* ===========================================
   Hero 产品截图
   =========================================== */
.hero-shot {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
}

.shot-frame {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  z-index: 2;
}

.shot-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border-1);
}

.shot-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.shot-dot.r { background: #ff5f57; }
.shot-dot.y { background: #ffbd2e; }
.shot-dot.g { background: #28c840; }

.shot-title {
  margin-left: 12px;
  font-size: 13px;
  color: var(--text-3);
}

.shot-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 420px;
}

.shot-side {
  background: var(--bg-2);
  border-right: 1px solid var(--border-1);
  padding: 20px 16px;
  font-size: 13px;
}

.side-section {
  margin-bottom: 24px;
}

.side-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  padding-left: 8px;
}

.side-item, .side-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  color: var(--text-3);
  margin-bottom: 4px;
  transition: background 0.15s;
}

.side-item.active {
  background: rgba(139, 92, 246, 0.12);
  color: var(--text-1);
}

.side-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-purple);
}

.side-step.done {
  color: var(--text-2);
}

.side-step.done::before {
  content: '✓';
  color: var(--accent-emerald);
  font-weight: 700;
  font-size: 12px;
  margin-right: 4px;
}

.side-step.current {
  background: rgba(139, 92, 246, 0.1);
  color: var(--text-1);
  border-left: 2px solid var(--accent-purple);
  padding-left: 6px;
}

.shot-main {
  display: flex;
  flex-direction: column;
}

.shot-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-1);
  background: var(--bg-1);
}

.shot-tabs {
  display: flex;
  gap: 4px;
}

.tab {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-3);
  cursor: pointer;
}

.tab.active {
  background: var(--bg-3);
  color: var(--text-1);
}

.shot-actions {
  display: flex;
  gap: 6px;
}

.chip {
  padding: 4px 10px;
  background: var(--bg-3);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-3);
}

.chip.primary {
  background: rgba(139, 92, 246, 0.15);
  color: #c4b5fd;
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 24px;
}

.stage-card {
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  transition: transform 0.2s;
}

.stage-card:hover {
  transform: translateY(-2px);
}

.stage-img {
  position: relative;
  aspect-ratio: 9/16;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #581c87 100%);
}

.stage-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-1);
}

.stage-cap {
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-3);
}

.shot-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.2), transparent 60%);
  z-index: 1;
  filter: blur(40px);
  pointer-events: none;
}

/* ===========================================
   信任带
   =========================================== */
.trust {
  padding: 80px 0 40px;
  border-top: 1px solid var(--border-1);
  border-bottom: 1px solid var(--border-1);
  background: var(--bg-1);
}

.trust-label {
  text-align: center;
  font-size: 13px;
  color: var(--text-4);
  letter-spacing: 0.04em;
  margin-bottom: 40px;
  text-transform: uppercase;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.trust-item {
  text-align: center;
}

.trust-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -0.02em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.trust-cap {
  font-size: 13px;
  color: var(--text-4);
}

/* ===========================================
   Section 通用
   =========================================== */
section {
  padding: 120px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 80px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-purple);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--text-1);
  margin-bottom: 20px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-3);
  line-height: 1.6;
}

/* ===========================================
   核心特性
   =========================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-1);
  border: 1px solid var(--border-1);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--bg-2);
  border-color: var(--border-3);
  transform: translateY(-2px);
}

.feature-card.large {
  grid-column: span 2;
  grid-row: span 2;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  border-color: rgba(139, 92, 246, 0.15);
}

.feature-card.large:last-of-type {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(6, 182, 212, 0.05));
  border-color: rgba(16, 185, 129, 0.15);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-blue { background: rgba(59, 130, 246, 0.12); color: var(--accent-blue); }
.icon-purple { background: rgba(139, 92, 246, 0.12); color: var(--accent-purple); }
.icon-cyan { background: rgba(6, 182, 212, 0.12); color: var(--accent-cyan); }
.icon-pink { background: rgba(236, 72, 153, 0.12); color: var(--accent-pink); }
.icon-amber { background: rgba(245, 158, 11, 0.12); color: var(--accent-amber); }
.icon-emerald { background: rgba(16, 185, 129, 0.12); color: var(--accent-emerald); }

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
}

.feature-visual {
  margin-top: 24px;
  padding: 16px;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: 10px;
  font-size: 13px;
  font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

.parse-line {
  padding: 10px 12px;
  background: var(--bg-3);
  border-radius: 6px;
  margin-bottom: 8px;
  color: var(--text-2);
  line-height: 1.5;
}

.parse-line.out {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-3);
}

.parse-line em {
  font-style: normal;
  color: var(--text-1);
  font-size: 13px;
}

.parse-arrow {
  text-align: center;
  color: var(--text-5);
  margin: 8px 0;
}

.badge-tiny {
  display: inline-block;
  padding: 2px 8px;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-4);
  white-space: nowrap;
}

.badge-tiny.ok {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

.char-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.char-tile {
  aspect-ratio: 1;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.char-tile.a { background: linear-gradient(135deg, #1e3a8a, #3b82f6); }
.char-tile.b { background: linear-gradient(135deg, #312e81, #6366f1); }
.char-tile.c { background: linear-gradient(135deg, #4c1d95, #8b5cf6); }
.char-tile.d { background: linear-gradient(135deg, #581c87, #a855f7); }

.char-cap {
  text-align: center;
  font-size: 12px;
  color: var(--text-4);
  font-family: inherit;
}

/* ===========================================
   工作流程
   =========================================== */
.flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 280px;
  max-width: 360px;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  transition: all 0.2s;
}

.flow-step:hover {
  border-color: var(--accent-purple);
  background: var(--bg-2);
}

.flow-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-purple);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  font-family: 'JetBrains Mono', monospace;
}

.flow-body h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.flow-body p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
  margin-bottom: 16px;
}

.flow-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--bg-3);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-3);
}

.flow-icon {
  position: absolute;
  top: 32px;
  right: 32px;
  color: var(--text-5);
  opacity: 0.6;
}

.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--text-5);
  align-self: center;
}

/* ===========================================
   作品展示
   =========================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.show-card {
  background: var(--bg-1);
  border: 1px solid var(--border-1);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.2s;
}

.show-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-3);
  box-shadow: var(--shadow-lg);
}

.show-cover {
  position: relative;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  overflow: hidden;
}

.show-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.6));
}

.show-cover.s1 { background: linear-gradient(135deg, #1e1b4b 0%, #7c2d12 100%); }
.show-cover.s2 { background: linear-gradient(135deg, #134e4a 0%, #064e3b 100%); }
.show-cover.s3 { background: linear-gradient(135deg, #831843 0%, #500724 100%); }
.show-cover.s4 { background: linear-gradient(135deg, #1e293b 0%, #0c4a6e 100%); }

.play-icon {
  position: relative;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--bg-0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  padding-left: 4px;
  z-index: 1;
  transition: transform 0.2s;
}

.show-card:hover .play-icon {
  transform: scale(1.08);
}

.show-meta {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-1);
  z-index: 1;
}

.show-info {
  padding: 20px 24px 24px;
}

.show-info h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}

.show-info p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.5;
  margin-bottom: 16px;
}

.show-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.show-tags span {
  padding: 3px 10px;
  background: var(--bg-3);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-3);
}

/* ===========================================
   应用场景
   =========================================== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.scene-card {
  background: var(--bg-1);
  border: 1px solid var(--border-1);
  border-radius: 14px;
  padding: 28px;
  transition: all 0.2s;
}

.scene-card:hover {
  background: var(--bg-2);
  border-color: var(--border-3);
  transform: translateY(-2px);
}

.scene-emoji {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}

.scene-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}

.scene-card p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.5;
}

/* ===========================================
   下载 CTA
   =========================================== */
.download {
  padding: 120px 0;
}

.download-card {
  position: relative;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(59, 130, 246, 0.08));
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 24px;
  padding: 80px 48px;
  overflow: hidden;
}

.download-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.15), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.12), transparent 50%);
  pointer-events: none;
}

.download-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 800px;
  margin: 48px auto 32px;
  text-align: left;
}

.download-block {
  display: block;
  background: rgba(28, 28, 31, 0.6);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-2);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.2s;
  position: relative;
}

.download-block:hover {
  border-color: var(--accent-purple);
  background: rgba(38, 38, 42, 0.8);
  transform: translateY(-3px);
}

.download-block.alt {
  background: rgba(28, 28, 31, 0.4);
}

.dl-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.dl-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-1);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.dl-icon.alt {
  background: var(--bg-3);
  color: var(--accent-cyan);
  border: 1px solid var(--border-2);
  box-shadow: none;
}

.dl-tag {
  padding: 4px 10px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 100px;
  font-size: 11px;
  color: #c4b5fd;
  font-weight: 600;
}

.download-block h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 6px;
}

.download-block p {
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 14px;
  line-height: 1.5;
}

.dl-meta {
  display: flex;
  gap: 8px;
  font-size: 12px;
  color: var(--text-4);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.dl-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
  padding-top: 16px;
  border-top: 1px solid var(--border-1);
}

.download-tips {
  display: flex;
  gap: 24px;
  justify-content: center;
  font-size: 13px;
  color: var(--text-3);
  flex-wrap: wrap;
}

/* ===========================================
   FAQ
   =========================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-1);
  border: 1px solid var(--border-1);
  border-radius: 12px;
  margin-bottom: 10px;
  padding: 20px 24px;
  transition: all 0.2s;
}

.faq-item:hover {
  border-color: var(--border-3);
}

.faq-item summary {
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  color: var(--text-3);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent-purple);
}

.faq-item p {
  margin-top: 14px;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.7;
}

/* ===========================================
   Final CTA
   =========================================== */
.final-cta {
  padding: 60px 0 120px;
}

.final-inner {
  text-align: center;
  padding: 60px 0;
}

.final-inner h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.final-inner p {
  font-size: 17px;
  color: var(--text-3);
  margin-bottom: 32px;
}

/* ===========================================
   Footer
   =========================================== */
.footer {
  background: var(--bg-1);
  border-top: 1px solid var(--border-1);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-3);
  margin-top: 12px;
  margin-bottom: 8px;
}

.footer-tech {
  font-size: 12px;
  color: var(--text-4);
}

.footer-col h5 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 10px;
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--text-1);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-1);
  font-size: 12px;
  color: var(--text-4);
}

/* ===========================================
   响应式
   =========================================== */
@media (max-width: 960px) {
  .container { padding: 0 24px; }
  .nav-inner { padding: 14px 24px; }
  .nav-links { display: none; }

  section { padding: 80px 0; }

  .hero { padding: 60px 0 60px; }

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

  .feature-card.large {
    grid-column: span 1;
    grid-row: span 1;
  }

  .flow {
    flex-direction: column;
    align-items: stretch;
  }

  .flow-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

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

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

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

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .download-card {
    padding: 48px 24px;
  }

  .shot-body {
    grid-template-columns: 1fr;
  }

  .shot-side {
    display: none;
  }
}

@media (max-width: 600px) {
  .scene-grid {
    grid-template-columns: 1fr;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    align-items: center;
  }

  .hero-meta {
    gap: 12px 20px;
  }

  .nav-actions .link-quiet { display: none; }
}

/* 入场动画 */
@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .show-card,
  .scene-card,
  .flow-step,
  .download-block {
    animation: fadeUp 0.6s ease both;
  }

  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}