/* ═══ Reset & Base ═══ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #08080a;
  --bg-card: #111114;
  --bg-card-hover: #18181c;
  --text: #e8e4df;
  --text-dim: #8a8580;
  --accent: #c8956c;
  --accent-light: #dbb08e;
  --accent-dim: rgba(200,149,108,0.12);
  --border: rgba(255,255,255,0.06);
  --radius: 16px;
  --radius-sm: 10px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

/* ═══ Nav ═══ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 40px;
  transition: background 0.3s, backdrop-filter 0.3s;
}

.nav.scrolled {
  background: rgba(8,8,10,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  color: var(--text-dim);
}

.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

.nav-cta {
  padding: 8px 20px;
  background: var(--accent);
  color: #0a0a0a !important;
  border-radius: 100px;
  font-weight: 600;
  font-size: 13px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(200,149,108,0.3);
}

/* ═══ Hero ═══ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.title-line { display: block; }

.title-accent {
  color: var(--accent);
  position: relative;
}

.title-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--accent);
  opacity: 0.2;
  border-radius: 3px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-dim);
  margin-bottom: 40px;
  max-width: 440px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-bottom: 32px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--accent);
  color: #0a0a0a;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(200,149,108,0.3);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 15px;
  color: var(--text-dim);
  transition: border-color 0.2s, color 0.2s;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--text);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

.meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-dim);
  opacity: 0.5;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.visual-frame {
  position: relative;
  width: 100%;
  max-width: 560px;
}

.screenshot-placeholder {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/11;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.03),
    0 20px 60px -12px rgba(0,0,0,0.6),
    0 0 80px -20px rgba(200,149,108,0.08);
}

.placeholder-inner {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.ph-topbar {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.ph-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.ph-content {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.ph-sidebar {
  width: 56px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 10px;
}

.ph-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
}

.ph-icon.active {
  background: var(--accent-dim);
}

.ph-main {
  flex: 1;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ph-wave {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 40px;
}

.ph-wave span {
  flex: 1;
  background: var(--accent);
  border-radius: 2px;
  animation: waveAnim 1.2s ease-in-out infinite;
  opacity: 0.6;
}

.ph-wave span:nth-child(odd) { height: 30%; animation-delay: 0.1s; }
.ph-wave span:nth-child(even) { height: 60%; animation-delay: 0.3s; }
.ph-wave span:nth-child(3n) { height: 80%; animation-delay: 0.5s; }
.ph-wave span:nth-child(5n) { height: 45%; animation-delay: 0.2s; }

@keyframes waveAnim {
  0%, 100% { transform: scaleY(0.4); }
  50% { transform: scaleY(1); }
}

.ph-lines { display: flex; flex-direction: column; gap: 8px; }

.ph-line {
  height: 6px;
  background: rgba(255,255,255,0.05);
  border-radius: 3px;
}

.ph-line.w80 { width: 80%; }
.ph-line.w60 { width: 60%; }
.ph-line.w90 { width: 90%; }
.ph-line.w50 { width: 50%; }

/* Float badges */
.float-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(17,17,20,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  animation: floatBadge 6s ease-in-out infinite;
  white-space: nowrap;
}

.float-badge-1 { top: 20%; right: -24px; animation-delay: 0s; }
.float-badge-2 { bottom: 28%; left: -32px; animation-delay: 2s; }
.float-badge-3 { bottom: 8%; right: 10%; animation-delay: 4s; }

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Hero wave canvas */
.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  opacity: 0.15;
  pointer-events: none;
}

.hero-wave canvas {
  width: 100%;
  height: 100%;
}

/* ═══ Marquee ═══ */
.marquee-section {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marqueeScroll 30s linear infinite;
}

.marquee-group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  white-space: nowrap;
}

.marquee-group span:not(.sep) {
  padding: 0 24px;
}

.sep {
  color: var(--accent);
  opacity: 0.3;
  font-size: 8px;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ═══ Section Common ═══ */
section {
  padding: 100px 40px;
}

.section-header {
  max-width: 1280px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ═══ Bento Grid ═══ */
.bento-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(280px, auto);
  gap: 16px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}

.bento-card:hover {
  border-color: rgba(200,149,108,0.2);
  transform: translateY(-2px);
}

.card-large {
  grid-column: span 2;
  grid-row: span 1;
}

.card-wide {
  grid-column: span 2;
}

.card-tall {
  grid-row: span 2;
}

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 12px;
  margin-bottom: 20px;
  color: var(--accent);
}

.card-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.card-content p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.card-visual {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
}

.card-visual.mini {
  margin-top: 20px;
}

/* Recording demo */
.recording-demo {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.rec-ring {
  position: relative;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rec-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0.3;
  animation: pulse 2s ease-out infinite;
}

.rec-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  animation: recBreathe 2s ease-in-out infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.3; }
  100% { transform: scale(2.2); opacity: 0; }
}

@keyframes recBreathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(0.9); }
}

.rec-wave {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 32px;
  width: 100%;
}

.rec-wave span {
  flex: 1;
  background: var(--accent);
  border-radius: 1px;
  opacity: 0.4;
  animation: waveAnim 1.5s ease-in-out infinite;
}

.rec-wave span:nth-child(2n) { animation-delay: 0.15s; }
.rec-wave span:nth-child(3n) { animation-delay: 0.3s; }
.rec-wave span:nth-child(5n) { animation-delay: 0.45s; }

.rec-time {
  font-size: 28px;
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  letter-spacing: 0.05em;
}

/* ASR demo */
.asr-demo {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.asr-char {
  font-size: 22px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  color: var(--text);
  animation: charAppear 0.5s ease both;
}

.asr-char.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.asr-char.cursor {
  border: 1px dashed var(--accent);
  opacity: 0.6;
  animation: cursorBlink 1s step-end infinite;
}

.asr-char.ghost {
  opacity: 0.2;
}

@keyframes charAppear {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes cursorBlink {
  50% { opacity: 0.1; }
}

/* Summary demo */
.summary-demo {
  width: 100%;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sum-bar {
  height: 5px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
}

.sum-bar.short { width: 70%; }

.sum-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

.sum-card {
  display: flex;
  gap: 10px;
  padding: 10px 12px;
  background: var(--accent-dim);
  border-radius: 10px;
  border-left: 3px solid var(--accent);
}

.sum-icon {
  color: var(--accent);
  font-size: 14px;
  line-height: 1;
}

.sum-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sum-line {
  height: 4px;
  background: rgba(200,149,108,0.15);
  border-radius: 2px;
}

.sum-line.short { width: 60%; }

/* Models orbit */
.models-orbit {
  position: relative;
  width: 220px;
  height: 220px;
}

.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  z-index: 2;
}

.orbit-ring {
  position: absolute;
  inset: 0;
}

.orbit-node {
  position: absolute;
  top: 50%;
  left: 50%;
  width: max-content;
  padding: 5px 12px;
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-dim);
  white-space: nowrap;
  transform: rotate(var(--angle)) translateY(-90px) rotate(calc(-1 * var(--angle)));
  translate: -50% 0;
}

/* Task demo */
.task-demo {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  font-size: 13px;
}

.task-check {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  flex-shrink: 0;
}

.task-item.checked .task-check {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0a0a;
}

.task-item.checked .task-name {
  text-decoration: line-through;
  opacity: 0.5;
}

.task-name { flex: 1; }

.task-date {
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 2px 8px;
  border-radius: 100px;
}

/* Platform icons */
.platform-icons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: auto;
  padding-top: 20px;
}

.platform-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
  transition: color 0.2s;
}

.platform-icon:hover { color: var(--text); }

/* ═══ Privacy ═══ */
.privacy {
  padding: 120px 40px;
  border-top: 1px solid var(--border);
}

.privacy-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}

.privacy-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 16px 0 24px;
}

.privacy-desc {
  font-size: 16px;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 480px;
}

.privacy-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.p-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-dim);
}

/* Shield graphic */
.shield-graphic {
  position: relative;
  width: 280px;
  height: 280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.shield-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(200,149,108,0.1);
  animation: shieldPulse 4s ease-in-out infinite;
}

.ring-1 { inset: 0; animation-delay: 0s; }
.ring-2 { inset: 30px; animation-delay: 1.3s; }
.ring-3 { inset: 60px; animation-delay: 2.6s; }

@keyframes shieldPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.04); }
}

.shield-center {
  color: var(--accent);
  z-index: 2;
}

/* ═══ Workflow ═══ */
.workflow {
  padding: 100px 40px;
  border-top: 1px solid var(--border);
}

.workflow-steps {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.wf-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 40px 0;
  position: relative;
}

.wf-num {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.15;
  line-height: 1;
}

.wf-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.wf-info p {
  font-size: 15px;
  color: var(--text-dim);
}

.wf-line {
  position: absolute;
  left: 40px;
  bottom: 0;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  opacity: 0.2;
}

/* ═══ Download ═══ */
.download {
  padding: 120px 40px;
  text-align: center;
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(200,149,108,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.download-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.download-desc {
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 48px;
}

.download-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.dl-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 32px;
  border-radius: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.dl-primary {
  background: var(--accent);
  color: #0a0a0a;
}

.dl-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(200,149,108,0.25);
}

.dl-btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.dl-small {
  font-size: 11px;
  opacity: 0.7;
  font-weight: 400;
}

.dl-big {
  font-size: 18px;
  font-weight: 700;
}

.brew-hint {
  font-size: 13px;
  color: var(--text-dim);
}

.brew-hint code {
  padding: 8px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 12px;
}

/* ═══ Footer ═══ */
.footer {
  padding: 40px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-logo {
  font-size: 16px;
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  color: var(--text-dim);
}

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

.footer-copy {
  font-size: 12px;
  color: var(--text-dim);
  opacity: 0.5;
}

/* ═══ Reveal Animation ═══ */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ═══ Responsive ═══ */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero { padding-top: 100px; }

  .hero-visual { order: -1; }

  .visual-frame { max-width: 400px; margin: 0 auto; }

  .float-badge { display: none; }

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

  .card-large, .card-wide { grid-column: span 1; }
  .card-tall { grid-row: span 1; }

  .privacy-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .privacy-visual { display: none; }

  .nav { padding: 0 20px; }
  .nav-links a:not(.nav-cta) { display: none; }

  section { padding: 60px 20px; }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .models-orbit { width: 180px; height: 180px; }
  .orbit-node { transform: rotate(var(--angle)) translateY(-70px) rotate(calc(-1 * var(--angle))); }
}

@media (max-width: 600px) {
  .hero-title { font-size: 40px; }
  .hero-actions { flex-direction: column; }
  .hero-desc { font-size: 15px; }
  .download-buttons { flex-direction: column; align-items: center; }
}