/* ============================================================
   5Bot - AI 外贸智能接待机器人官网
   ============================================================ */

/* --- Variables --- */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-900: #1e3a8a;

  --color-accent: #06b6d4;
  --color-accent-dark: #0891b2;

  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;

  --color-success: #10b981;
  --color-white: #ffffff;

  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-hero: linear-gradient(160deg, #0f172a 0%, #1e293b 40%, #172554 100%);
  --gradient-cta: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  --header-height: 72px;
  --container-max: 1320px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  scrollbar-gutter: stable;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-700);
  background: var(--color-white);
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-gray-900);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px;
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}

.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-md { padding: 10px 24px; font-size: 15px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-outline {
  border-color: var(--color-gray-300);
  color: var(--color-gray-700);
  background: var(--color-white);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 700;
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.btn-outline-white {
  border-color: rgba(255,255,255,0.4);
  color: var(--color-white);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
  transform: translateY(-2px);
}

.btn-block { width: 100%; }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: all var(--transition-base);
  background: transparent;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  transition: color var(--transition-base);
}

.header.scrolled .logo { color: var(--color-gray-900); }

.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-light);
  transition: width var(--transition-base);
  border-radius: 1px;
}

.nav-link:hover { color: var(--color-white); }
.nav-link:hover::after { width: 100%; }

.header.scrolled .nav-link { color: var(--color-gray-500); }
.header.scrolled .nav-link:hover { color: var(--color-primary); }
.header.scrolled .nav-link:hover::after { background: var(--color-primary); }

.header-cta {
  color: var(--color-white) !important;
}

.header-login {
  color: var(--color-white) !important;
  border: 1px solid rgba(255, 255, 255, 0.4) !important;
  background: transparent !important;
  margin-left: 8px;
  transition: all 0.2s;
}
.header-login:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  border-color: rgba(255, 255, 255, 0.7) !important;
}
.header.scrolled .header-login {
  color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
}
.header.scrolled .header-login:hover {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.header.scrolled .mobile-menu-btn span { background: var(--color-gray-700); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  padding: 100px 0 64px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.hero-glow-1 {
  width: 500px;
  height: 500px;
  background: rgba(37, 99, 235, 0.15);
  top: -100px;
  right: -100px;
}

.hero-glow-2 {
  width: 400px;
  height: 400px;
  background: rgba(6, 182, 212, 0.1);
  bottom: -50px;
  left: -50px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(34px, 3.8vw, 48px);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.hero-keywords {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-keyword {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-keywords .hero-kw-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(96, 165, 250, 0.5);
  flex-shrink: 0;
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 24px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.hero-desc {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.9;
  margin-bottom: 40px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-white);
  font-variant-numeric: tabular-nums;
}

.hero-stat-plus {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
}

.hero-stat-label {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

/* Hero Video */
/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-chat-demo {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hero-chat-demo.hero-chat-dark {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3), 0 0 60px rgba(37, 99, 235, 0.08);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3), 0 0 60px rgba(37, 99, 235, 0.08);
}

.hero-chat-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--gradient-primary);
  color: #fff;
}

.hero-chat-head-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.hero-chat-head-avatar-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-chat-head-name {
  font-size: 15px;
  font-weight: 700;
}

.hero-chat-head-status {
  font-size: 12px;
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-chat-messages {
  min-height: 300px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: hidden;
}

.hero-chat-dark .hero-chat-messages { background: transparent; }
.hero-chat-demo:not(.hero-chat-dark) .hero-chat-messages { background: var(--color-gray-50); }

.hero-chat-msg {
  max-width: 88%;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.hero-chat-msg.show {
  opacity: 1;
  transform: translateY(0);
}

.hero-chat-msg p {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
}

.hero-chat-msg.bot {
  align-self: flex-start;
}

.hero-chat-msg.bot p {
  background: var(--color-white);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-200);
  border-bottom-left-radius: 3px;
}

.hero-chat-dark .hero-chat-msg.bot p {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.88);
  border-color: transparent;
}

.hero-chat-img-grid {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.hero-chat-img-card {
  width: 100px;
  border-radius: 10px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
  opacity: 0;
  transform: scale(0.9);
  animation: img-card-in 0.35s ease forwards;
}

.hero-chat-dark .hero-chat-img-card {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.1);
}

@keyframes img-card-in {
  to { opacity: 1; transform: scale(1); }
}

.hero-chat-img-thumb {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-chat-img-info {
  padding: 6px 8px;
}

.hero-chat-img-name {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-gray-800);
  line-height: 1.3;
}

.hero-chat-photo-grid {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.hero-chat-photo-grid img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-chat-img-spec {
  display: block;
  font-size: 10px;
  color: var(--color-gray-400);
  margin-top: 2px;
}

.hero-chat-dark .hero-chat-img-name { color: rgba(255, 255, 255, 0.88); }
.hero-chat-dark .hero-chat-img-spec { color: rgba(255, 255, 255, 0.45); }

.hero-chat-msg.user {
  align-self: flex-end;
}

.hero-chat-msg.user p {
  background: var(--gradient-primary);
  color: #fff;
  border-bottom-right-radius: 3px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.hero-chat-msg .msg-time {
  display: block;
  font-size: 11px;
  color: var(--color-gray-400);
  margin-top: 4px;
  padding: 0 4px;
}

.hero-chat-msg.user .msg-time {
  text-align: right;
}

.hero-chat-typing {
  align-self: flex-start;
  display: flex;
  gap: 5px;
  padding: 10px 16px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 12px 12px 12px 3px;
}

.hero-chat-typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-gray-300);
  animation: typing-bounce 1.4s infinite;
}

.hero-chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.hero-chat-typing span:nth-child(3) { animation-delay: 0.3s; }

.hero-chat-dark .hero-chat-typing {
  background: rgba(255, 255, 255, 0.1);
  border-color: transparent;
}
.hero-chat-dark .hero-chat-typing span { background: rgba(255, 255, 255, 0.5); }

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

.hero-chat-input-area {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.hero-chat-dark .hero-chat-input-area {
  border-top-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.hero-chat-input-placeholder {
  flex: 1;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  font-size: 13px;
  color: var(--color-gray-400);
}

.hero-chat-dark .hero-chat-input-placeholder {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.4);
}

.hero-chat-send-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
}

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

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  padding: 120px 0;
  background: var(--color-white);
}

.features.features-hero-attached {
  padding-top: 80px;
  padding-bottom: 48px;
  background: var(--color-gray-50);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 0;
}

.divider-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.3;
}

.divider-line {
  width: 48px;
  height: 1px;
  background: var(--color-gray-300);
}

.feature-item {
  text-align: center;
  padding: 20px 12px;
  transition: transform var(--transition-slow);
}

.feature-item:hover {
  transform: translateY(-4px);
}

.feature-icon-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.25);
  transition: all var(--transition-slow);
}

.feature-item:hover .feature-icon-circle {
  transform: scale(1.08);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35);
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* ============================================================
   FOUNDER VIDEO
   ============================================================ */
.founder-video {
  padding: 60px 0 100px;
  background: var(--color-gray-50);
  position: relative;
  overflow: hidden;
}

.features-hero-attached .founder-inner {
  padding-bottom: 0;
}

.founder-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
}

.founder-text {
  position: relative;
  padding-top: 16px;
}

.founder-subtitle {
  display: block;
  position: relative;
  z-index: 1;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 13px;
  font-style: italic;
  font-weight: 400;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 16px;
  opacity: 0.6;
}

.founder-title {
  position: relative;
  z-index: 1;
  font-size: 44px;
  font-weight: 900;
  color: var(--color-gray-900);
  line-height: 1.25;
  margin-bottom: 40px;
  letter-spacing: -0.5px;
}

.founder-title em {
  font-style: normal;
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.founder-quote {
  position: relative;
  z-index: 1;
  padding: 0 0 0 4px;
  border-left: none;
  margin: 0 0 0 0;
}

.founder-deco-quote {
  display: block;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 72px;
  line-height: 0.5;
  color: var(--color-primary);
  opacity: 0.2;
  pointer-events: none;
  user-select: none;
  margin-bottom: 0;
}

.founder-deco-quote-end {
  text-align: right;
  margin-top: 8px;
  margin-bottom: -28px;
}

.founder-quote p {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 17px;
  font-style: italic;
  color: var(--color-gray-600);
  line-height: 2.2;
  margin: 0 0 12px 0;
  letter-spacing: 0.3px;
}

.founder-quote p strong {
  font-style: italic;
  font-weight: 700;
  color: var(--color-gray-800);
}

.founder-quote p:last-of-type {
  margin-bottom: 0;
}

.founder-author {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  margin-top: 12px;
  padding-top: 0;
  border-top: none;
  padding-right: 80px;
}

.founder-author::before {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--gradient-primary);
  flex-shrink: 0;
}

.founder-author-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-gray-900);
  letter-spacing: -0.3px;
}

.founder-author-role {
  font-size: 13px;
  color: var(--color-gray-400);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.founder-photo-frame {
  position: relative;
  display: flex;
  justify-content: flex-end;
  padding-top: 8px;
}

.founder-photo-frame::before {
  content: '';
  position: absolute;
  top: 24px;
  right: -14px;
  width: 100%;
  max-width: 360px;
  height: calc(100% - 16px);
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  opacity: 0.12;
  z-index: 0;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.founder-photo-frame:hover::before {
  transform: translate(4px, 4px);
}

.founder-photo-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-end;
}

.founder-photo {
  width: 100%;
  max-width: 360px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.12);
  object-fit: cover;
  filter: contrast(1.05) saturate(0.9);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.founder-photo-frame:hover .founder-photo {
  transform: scale(1.02);
}

.founder-photo-link {
  display: block;
  text-decoration: none;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-it-works {
  padding: 80px 0 60px;
  background: var(--color-gray-50);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.step {
  flex: 1;
  max-width: 300px;
  text-align: center;
  padding: 0 20px;
}

.step-number {
  font-size: 48px;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.step-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-primary);
  margin: 0 auto 20px;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--color-primary-100);
}

.step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 15px;
  color: var(--color-gray-500);
  line-height: 1.7;
}

.steps-cta {
  text-align: center;
  margin-top: 60px;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: 90px;
  color: var(--color-gray-300);
  flex-shrink: 0;
}

/* ============================================================
   DEMO SECTION
   ============================================================ */
.demo-section {
  padding: 100px 0 110px;
  background: var(--gradient-hero);
}

.demo-section .section-header {
  margin-bottom: 40px;
}

.demo-section .section-tag {
  color: var(--color-accent);
}

.demo-section .section-title {
  color: var(--color-white);
}

.demo-section .section-desc {
  color: rgba(255, 255, 255, 0.6);
}

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

.demo-window {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.demo-chat {
  display: flex;
  flex-direction: column;
  height: 520px;
  background: var(--color-gray-50);
}

.demo-chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--gradient-primary);
  color: var(--color-white);
}

.demo-chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.demo-chat-avatar-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.demo-chat-name {
  font-weight: 700;
  font-size: 15px;
}

.demo-chat-status {
  font-size: 12px;
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  display: inline-block;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.demo-chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.demo-msg {
  max-width: 85%;
  position: relative;
}

.demo-msg p {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 1.6;
}

.demo-msg p + p {
  margin-top: 6px;
}

.demo-msg.bot {
  align-self: flex-start;
}

.demo-msg.bot p {
  background: var(--color-white);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 4px;
}

.demo-msg.user {
  align-self: flex-end;
}

.demo-msg.user p {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);
}

.demo-msg-time {
  display: block;
  font-size: 11px;
  color: var(--color-gray-400);
  margin-top: 4px;
  padding: 0 4px;
}

.demo-msg.user .demo-msg-time {
  text-align: right;
}

.demo-msg-images {
  display: flex;
  gap: 8px;
  margin-top: 6px;
  padding: 0 4px;
}

.demo-msg-images img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.demo-msg.bot .demo-msg-images img {
  border-color: var(--color-gray-200);
}

.demo-chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.demo-chat-input input {
  flex: 1;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  padding: 10px 18px;
  font-size: 14px;
  outline: none;
  background: var(--color-gray-50);
  color: var(--color-gray-500);
}

.demo-send-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-gray-200);
  color: var(--color-gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing {
  padding: 80px 0 120px;
  background: var(--color-gray-50);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.pricing-grid-two {
  grid-template-columns: repeat(2, 1fr);
  max-width: 920px;
  margin: 0 auto;
  gap: 48px;
}

.pricing-card {
  padding: 40px 32px;
  border-radius: var(--radius-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-slow);
  cursor: pointer;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-card-featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
  z-index: 1;
}

.pricing-card-featured:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 20px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 16px;
}

.pricing-price {
  margin-bottom: 8px;
}

.pricing-amount {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-gray-900);
  letter-spacing: -0.02em;
}

.pricing-period {
  font-size: 16px;
  color: var(--color-gray-400);
  font-weight: 500;
}

.pricing-desc {
  font-size: 14px;
  color: var(--color-gray-500);
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-gray-100);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-gray-600);
}

.pricing-features li svg {
  color: var(--color-success);
  flex-shrink: 0;
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials {
  padding: 60px 0 120px;
  background: var(--color-white);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  padding: 32px;
  border-radius: var(--radius-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-slow);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: #f59e0b;
  font-size: 18px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}

.testimonial-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gray-900);
}

.testimonial-role {
  font-size: 13px;
  color: var(--color-gray-400);
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  padding: 120px 0;
  background: var(--gradient-cta);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

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

.cta-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.cta-note {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

/* --- Name Dot Separator --- */
.name-dot {
  display: inline-block;
  margin: 0 5px;
  font-size: 1.3em;
  line-height: 1;
  vertical-align: middle;
  opacity: 0.6;
}

/* --- Bot Design Form --- */
.form-wrapper {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
}

.form-header {
  text-align: center;
  margin-bottom: 48px;
}

.bot-form {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.form-section {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(8px);
}

.form-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.form-section-title svg {
  color: var(--color-accent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
}

.required {
  color: #f87171;
}

.form-input {
  padding: 11px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-white);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input::placeholder {
  color: rgba(255, 255, 255, 0.25);
}

.form-input:focus {
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-select option {
  background: var(--color-gray-800);
  color: var(--color-white);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.6;
}

.form-hint {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 4px;
}

.avatar-upload {
  cursor: pointer;
}

.avatar-preview {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  transition: all var(--transition-normal);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
}

.avatar-preview:hover {
  border-color: rgba(255, 255, 255, 0.6);
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.1);
}

.avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-upload-text {
  font-size: 11px;
  margin-top: 2px;
}

.form-radio-group {
  display: flex;
  gap: 16px;
  padding-top: 4px;
}

.form-radio {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.form-radio input[type="radio"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}

.form-radio input[type="radio"]:checked {
  border-color: var(--color-accent);
}

.form-radio input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.form-actions {
  text-align: center;
  padding-top: 8px;
}

.form-submit-btn {
  min-width: 240px;
  font-size: 17px;
  padding: 16px 40px;
  margin-bottom: 16px;
}

.form-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-section {
    padding: 24px 20px;
  }
}

/* ============================================================
   BOT SHOWCASE
   ============================================================ */
.bot-showcase {
  padding: 120px 0 60px;
  background: var(--color-white);
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.showcase-carousel {
  position: relative;
  overflow: hidden;
  padding: 0 40px;
}

.showcase-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.showcase-slide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  min-width: 100%;
  flex-shrink: 0;
}

.showcase-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
  color: var(--color-gray-700);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.showcase-arrow:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.showcase-arrow:disabled {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.showcase-arrow-left {
  left: 0;
}

.showcase-arrow-right {
  right: 0;
}

.showcase-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-slow);
}

.showcase-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.showcase-iframe {
  width: 100%;
  height: 520px;
  border: none;
  display: block;
}

.showcase-grid-two .showcase-iframe {
  height: 600px;
}

@media (max-width: 1024px) {
  .showcase-grid:not(.showcase-grid-two) {
    grid-template-columns: repeat(2, 1fr);
  }
  .showcase-grid:not(.showcase-grid-two) .showcase-card:last-child {
    grid-column: 1 / -1;
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .showcase-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .showcase-grid .showcase-card:last-child {
    max-width: none;
  }
  .bot-showcase {
    padding: 80px 0;
  }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 64px 0 32px;
  background: var(--color-gray-900);
  color: rgba(255, 255, 255, 0.6);
}

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

.footer-brand .logo {
  margin-bottom: 16px;
  color: var(--color-white);
}

.footer-about {
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
}

.footer-links h4 {
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 13px;
}

/* ============================================================
   FLOATING CHAT WIDGET
   ============================================================ */
.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
}

.chat-widget-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
  transition: all var(--transition-base);
}

.chat-widget-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.5);
}

.chat-widget-icon-close { display: none; }
.chat-widget.open .chat-widget-icon-open { display: none; }
.chat-widget.open .chat-widget-icon-close { display: block; }

.chat-widget-window {
  position: absolute;
  bottom: 72px;
  right: 0;
  width: 380px;
  height: 520px;
  border-radius: var(--radius-xl);
  background: var(--color-white);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.95);
  transition: all var(--transition-base);
  transform-origin: bottom right;
}

.chat-widget.open .chat-widget-window {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.chat-widget-header {
  padding: 18px 20px;
  background: var(--gradient-primary);
  color: var(--color-white);
}

.chat-widget-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-widget-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-widget-name {
  font-weight: 700;
  font-size: 15px;
}

.chat-widget-status {
  font-size: 12px;
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-widget-messages {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--color-gray-50);
}

.chat-widget-msg {
  max-width: 85%;
  font-size: 14px;
  line-height: 1.5;
}

.chat-widget-msg.bot {
  align-self: flex-start;
}

.chat-widget-msg.bot p {
  padding: 10px 14px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md) var(--radius-md) var(--radius-md) 4px;
  color: var(--color-gray-700);
}

.chat-widget-msg.user {
  align-self: flex-end;
}

.chat-widget-msg.user p {
  padding: 10px 14px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md) var(--radius-md) 4px var(--radius-md);
}

.chat-widget-msg .msg-time {
  display: block;
  font-size: 11px;
  color: var(--color-gray-400);
  margin-top: 4px;
  padding: 0 4px;
}

.chat-widget-msg.user .msg-time {
  text-align: right;
}

.chat-widget-input-area {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.chat-widget-input {
  flex: 1;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  padding: 10px 16px;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition-fast);
  background: var(--color-gray-50);
}

.chat-widget-input:focus {
  border-color: var(--color-primary-light);
  background: var(--color-white);
}

.chat-widget-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.chat-widget-send:hover {
  transform: scale(1.08);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card-featured {
    transform: none;
  }
  .pricing-card-featured:hover {
    transform: translateY(-4px);
  }

  .demo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .demo-grid .demo-window:last-child {
    grid-column: 1 / -1;
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
  }

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

@media (max-width: 768px) {
  .section-title { font-size: 28px; }
  .hero-title { font-size: 36px; }

  .nav { display: none; }
  .header-cta, .header-login { display: none; }
  .mobile-menu-btn { display: flex; }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: 20px 24px;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--color-gray-200);
    gap: 0;
  }

  .nav.open .nav-link {
    padding: 12px 0;
    color: var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-100);
  }

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

  .founder-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .founder-title { font-size: 32px; }
  .founder-deco-quote { font-size: 56px; }
  .founder-subtitle { margin-bottom: 28px; }
  .founder-video { padding: 80px 0; }
  .founder-photo-frame { justify-content: center; }
  .founder-photo-frame::before { right: -8px; }
  .founder-photo-wrap { justify-content: center; }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .step-connector {
    padding-top: 0;
    transform: rotate(90deg);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

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

  .cta-title { font-size: 28px; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .demo-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .demo-window {
    border-radius: var(--radius-lg);
  }

  .chat-widget-window {
    width: calc(100vw - 32px);
    right: -8px;
    height: 480px;
  }

  .hero-stats { gap: 24px; }
  .hero-stat-num { font-size: 26px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .container { padding: 0 16px; }
  .features, .how-it-works, .demo-section, .pricing, .testimonials, .cta-section { padding: 80px 0; }
  .section-header { margin-bottom: 40px; }
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  cursor: zoom-out;
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.lightbox-overlay.active .lightbox-img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 36px;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}

.lightbox-close:hover {
  color: var(--color-white);
}

.demo-msg-images img,
.hero-chat-photo-grid img {
  cursor: zoom-in;
}

/* ============================================================
   FOUNDER PAGE
   ============================================================ */

/* --- Hero Banner --- */
.fp-hero {
  position: relative;
  padding: 160px 0 100px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.fp-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.fp-hero-tag {
  display: inline-block;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 14px;
  font-style: italic;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.fp-hero-name {
  font-size: 72px;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.fp-hero-title {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin-bottom: 40px;
}

.fp-hero-stats {
  display: flex;
  gap: 40px;
}

.fp-hero-stat {
  text-align: center;
}

.fp-hero-stat-num {
  display: block;
  font-size: 36px;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
}

.fp-hero-stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

.fp-hero-photo {
  display: flex;
  justify-content: flex-end;
}

.fp-hero-photo img {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-xl);
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.4);
  object-fit: cover;
}

/* --- Section Headers --- */
.fp-section-header {
  text-align: center;
  margin-bottom: 64px;
}

.fp-section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.fp-section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-gray-900);
  letter-spacing: -0.5px;
}

.fp-section-desc {
  font-size: 17px;
  color: var(--color-gray-500);
  margin-top: 12px;
}

/* --- Opening Quote --- */
.fp-quote-section {
  padding: 100px 0;
  background: var(--color-white);
}

.fp-blockquote {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.fp-bq-mark {
  display: block;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 80px;
  line-height: 0.5;
  color: var(--color-primary);
  opacity: 0.15;
  user-select: none;
}

.fp-bq-mark-end {
  margin-top: 16px;
}

.fp-blockquote p {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 26px;
  font-style: italic;
  color: var(--color-gray-700);
  line-height: 1.8;
  margin: 20px 0;
}

/* --- Timeline --- */
.fp-timeline-section {
  padding: 100px 0;
  background: var(--color-gray-50);
}

.fp-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 60px;
}

.fp-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
  opacity: 0.2;
}

.fp-tl-item {
  position: relative;
  padding-bottom: 48px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fp-tl-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.fp-tl-item::before {
  content: '';
  position: absolute;
  left: -48px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  z-index: 1;
}

.fp-tl-year {
  font-size: 14px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.fp-tl-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 10px;
  line-height: 1.4;
}

.fp-tl-content p {
  font-size: 16px;
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 8px;
}

.fp-tl-img {
  margin-top: 16px;
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  cursor: zoom-in;
}

/* --- Gallery --- */
.fp-gallery-section {
  padding: 100px 0;
  background: var(--color-white);
}

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

.fp-gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fp-gallery-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.fp-gallery-item img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  cursor: zoom-in;
  transition: transform 0.4s ease;
}

.fp-gallery-item:hover img {
  transform: scale(1.05);
}

/* --- Achievements --- */
.fp-achievements-section {
  padding: 100px 0;
  background: var(--color-gray-50);
}

.fp-achievements-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.fp-achievement-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease;
}

.fp-achievement-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.fp-achievement-card:hover {
  box-shadow: var(--shadow-lg);
}

.fp-achievement-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.fp-achievement-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
  line-height: 1.4;
}

.fp-achievement-card p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* --- Life & Taste --- */
.fp-life-section {
  padding: 100px 0;
  background: var(--color-white);
}

.fp-life-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.fp-life-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fp-life-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.fp-life-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  cursor: zoom-in;
  transition: transform 0.4s ease;
}

.fp-life-item:hover img {
  transform: scale(1.05);
}

.fp-life-placeholder {
  background: var(--color-gray-100);
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fp-life-placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-gray-400);
  font-size: 14px;
}

/* --- Videos --- */
.fp-videos-section {
  padding: 100px 0;
  background: var(--color-gray-50);
}

.fp-video-category {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-gray-800);
  margin-bottom: 24px;
  padding-left: 16px;
  border-left: 3px solid var(--color-primary);
}

.fp-video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.fp-video-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fp-video-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.fp-video-placeholder {
  background: var(--color-gray-100);
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fp-video-placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-gray-400);
  font-size: 14px;
}

.fp-video-cta {
  text-align: center;
  padding-top: 24px;
}

.fp-video-cta p {
  font-size: 18px;
  color: var(--color-gray-700);
  margin-bottom: 24px;
}

.fp-video-cta strong {
  color: var(--color-primary);
}

.fp-qrcode img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* --- Vision --- */
.fp-vision-section {
  padding: 120px 0;
  background: var(--gradient-hero);
}

.fp-vision-quote {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.fp-vision-quote .fp-bq-mark {
  color: var(--color-accent);
  opacity: 0.25;
}

.fp-vision-quote p {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 28px;
  font-style: italic;
  color: var(--color-white);
  line-height: 1.8;
  margin: 20px 0;
}

.fp-vision-author {
  margin-top: 32px;
}

.fp-vision-author span {
  font-size: 18px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.7);
}

/* --- Founder Page Responsive --- */
@media (max-width: 1024px) {
  .fp-hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .fp-hero-photo { justify-content: center; }
  .fp-hero-stats { justify-content: center; }
  .fp-achievements-grid { grid-template-columns: 1fr; }
  .fp-life-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .fp-hero { padding: 120px 0 60px; }
  .fp-hero-name { font-size: 48px; }
  .fp-hero-stats { flex-wrap: wrap; gap: 24px; }
  .fp-gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .fp-video-grid { grid-template-columns: 1fr; }
  .fp-timeline { padding-left: 48px; }
  .fp-timeline::before { left: 14px; }
  .fp-tl-item::before { left: -41px; width: 12px; height: 12px; }
  .fp-blockquote p { font-size: 20px; }
  .fp-vision-quote p { font-size: 22px; }
  .fp-section-title { font-size: 28px; }
}

@media (max-width: 480px) {
  .fp-hero-name { font-size: 36px; }
  .fp-gallery-grid { grid-template-columns: 1fr; }
  .fp-life-grid { grid-template-columns: 1fr; }
  .fp-timeline { padding-left: 36px; }
  .fp-timeline::before { left: 8px; }
  .fp-tl-item::before { left: -34px; width: 10px; height: 10px; }
}