@charset "UTF-8";

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

:root {
  --bg-deep: #0f0f1a;
  --card-bg: #1a1a2e;
  --primary: #8b5cf6;
  --primary-dark: #4c1d95;
  --accent: #a78bfa;
  --text-light: #f0f0f5;
  --text-muted: #9494b8;
  --gradient-primary: linear-gradient(135deg, #8b5cf6, #5b21b6);
  --max-width: 1200px;
  --nav-height: 70px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-light);
  line-height: 1.65;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.section {
  position: relative;
  z-index: 1;
  padding: 110px 0;
}

.section-title {
  text-align: center;
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #c4b5fd 0%, #8b5cf6 40%, #ffffff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 55px;
  letter-spacing: 0.02em;
}

.reveal {
  opacity: 0;
  transform: translateY(45px);
  transition: opacity 0.75s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.75s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.header.scrolled {
  background: rgba(15, 15, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 30px rgba(139, 92, 246, 0.12);
  border-bottom: 1px solid rgba(139, 92, 246, 0.08);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-light);
  z-index: 1001;
  letter-spacing: -0.03em;
}

.logo span {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.35);
}

.nav-menu ul {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
}

.nav-menu li a {
  color: var(--text-muted);
  font-size: 0.93rem;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
  letter-spacing: 0.02em;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--text-light);
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
  width: 60%;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 26px;
  background: var(--gradient-primary);
  color: #fff;
  border-radius: 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.45);
}

.btn-primary:active {
  transform: scale(0.95);
}

.nav-download-btn-mobile {
  display: none;
  z-index: 1001;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 26px;
  background: transparent;
  color: var(--text-light);
  border: 2px solid rgba(139, 92, 246, 0.45);
  border-radius: 28px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  letter-spacing: 0.02em;
}

.btn-outline:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.2);
}

.btn-outline:active {
  transform: scale(0.95);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  background: none;
  border: none;
  padding: 4px;
  transition: background 0.25s;
  border-radius: 8px;
}

.hamburger span {
  width: 26px;
  height: 2.5px;
  background: var(--text-light);
  border-radius: 3px;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

.banner {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + 80px);
  position: relative;
  z-index: 1;
}

.banner .container {
  display: flex;
  align-items: center;
  gap: 70px;
}

.banner-left {
  flex: 1;
}

.banner-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 22px;
  letter-spacing: -0.03em;
}

.banner-slogan {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.banner-slogan .gradient-text {
  background: linear-gradient(135deg, #a78bfa 0%, #c4b5fd 40%, #e0e7ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.banner-desc {
  color: var(--text-muted);
  font-size: 1.08rem;
  margin-bottom: 28px;
  max-width: 500px;
  line-height: 1.75;
}

.banner-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
}

.banner-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.banner-feature .check-icon {
  width: 22px;
  height: 22px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.3);
}

.banner-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.banner-right {
  flex: 1;
  display: flex;
  justify-content: center;
}

.chat-card {
  width: 350px;
  background: rgba(26, 26, 46, 0.92);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 25px 70px rgba(139, 92, 246, 0.18), 0 0 0 1px rgba(139, 92, 246, 0.08);
  animation: floatCard 5s ease-in-out infinite;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-10px) rotate(0.5deg); }
  66% { transform: translateY(-5px) rotate(-0.3deg); }
}

.chat-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(139, 92, 246, 0.15);
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.chat-name {
  font-weight: 600;
  font-size: 0.92rem;
}

.chat-status {
  font-size: 0.75rem;
  color: #4ade80;
  display: flex;
  align-items: center;
  gap: 4px;
}

.chat-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #4ade80;
  border-radius: 50%;
  display: inline-block;
}

.chat-card-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 290px;
  max-height: 290px;
  overflow-y: auto;
}

.chat-card-body::-webkit-scrollbar {
  width: 3px;
}

.chat-card-body::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.3);
  border-radius: 3px;
}

.chat-msg {
  display: flex;
  gap: 8px;
  max-width: 85%;
  animation: msgIn 0.5s ease forwards;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.chat-msg.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-msg .msg-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  flex-shrink: 0;
}

.chat-msg.user .msg-avatar {
  background: #475569;
}

.msg-bubble {
  padding: 11px 15px;
  border-radius: 18px;
  font-size: 0.84rem;
  line-height: 1.55;
}

.chat-msg.ai .msg-bubble {
  background: rgba(139, 92, 246, 0.2);
  border-top-left-radius: 5px;
  color: #d8d0f0;
}

.chat-msg.user .msg-bubble {
  background: rgba(71, 85, 105, 0.45);
  border-top-right-radius: 5px;
  color: #cbd5e1;
}

.chat-card-input {
  padding: 14px 18px;
  border-top: 1px solid rgba(139, 92, 246, 0.15);
  display: flex;
  gap: 10px;
}

.chat-card-input input {
  flex: 1;
  padding: 9px 16px;
  border-radius: 22px;
  border: 1px solid rgba(139, 92, 246, 0.25);
  background: rgba(15, 15, 26, 0.6);
  color: var(--text-light);
  font-size: 0.84rem;
  outline: none;
  transition: border-color 0.3s;
}

.chat-card-input input::placeholder {
  color: rgba(148, 148, 184, 0.5);
}

.chat-card-input input:focus {
  border-color: var(--primary);
}

.chat-card-input button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: transform 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}

.chat-card-input button:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.scene-gallery {
  width: 100%;
  overflow: hidden;
}

.scene-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 10px;
}

.scene-track::-webkit-scrollbar {
  display: none;
}

.scene-slide {
  flex: 0 0 auto;
  width: 280px;
  scroll-snap-align: start;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(139, 92, 246, 0.12);
  transition: transform 0.35s, box-shadow 0.35s;
  cursor: pointer;
}

.scene-slide:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(139, 92, 246, 0.25);
}

.scene-slide img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}

.characters-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.character-card {
  background: var(--card-bg);
  border-radius: 22px;
  padding: 34px 22px;
  text-align: center;
  border: 1px solid rgba(139, 92, 246, 0.06);
  transition: transform 0.35s, box-shadow 0.35s, border-color 0.35s, background 0.35s;
  cursor: pointer;
}

.character-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(139, 92, 246, 0.22);
  border-color: rgba(139, 92, 246, 0.35);
  background: #1f1f38;
}

.character-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--gradient-primary);
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.25);
  overflow: hidden;
}

.character-card:hover .character-avatar {
  transform: scale(1.12);
  box-shadow: 0 12px 35px rgba(139, 92, 246, 0.4);
}

.character-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.character-desc {
  color: var(--text-muted);
  font-size: 0.86rem;
  margin-bottom: 18px;
  line-height: 1.6;
}

.character-btn {
  display: inline-block;
  padding: 7px 20px;
  border-radius: 16px;
  border: 1px solid rgba(139, 92, 246, 0.35);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
  letter-spacing: 0.02em;
}

.character-card:hover .character-btn {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.advantage-card {
  background: var(--card-bg);
  border-radius: 18px;
  padding: 30px 26px;
  display: flex;
  gap: 18px;
  border: 1px solid rgba(139, 92, 246, 0.06);
  transition: transform 0.35s, box-shadow 0.35s, border-color 0.35s, background 0.35s;
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 45px rgba(139, 92, 246, 0.25), inset 0 0 40px rgba(139, 92, 246, 0.04);
  border-color: rgba(139, 92, 246, 0.3);
  background: #1f1f38;
}

.advantage-icon {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: rgba(139, 92, 246, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #b89ef5;
  transition: background 0.35s;
}

.advantage-card:hover .advantage-icon {
  background: rgba(139, 92, 246, 0.25);
}

.advantage-info h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.advantage-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.custom-section .container {
  display: flex;
  gap: 70px;
  align-items: center;
}

.custom-left {
  flex: 1;
}

.custom-slider-group {
  margin-bottom: 22px;
}

.custom-slider-group label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.custom-slider-group label span:last-child {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.custom-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 7px;
  border-radius: 4px;
  background: rgba(139, 92, 246, 0.15);
  outline: none;
  transition: background 0.2s;
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gradient-primary);
  cursor: pointer;
  border: 2.5px solid #fff;
  box-shadow: 0 0 16px rgba(139, 92, 246, 0.5);
  transition: transform 0.2s, box-shadow 0.2s;
}

.custom-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 24px rgba(139, 92, 246, 0.7);
}

.custom-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gradient-primary);
  cursor: pointer;
  border: 2.5px solid #fff;
}

.custom-right {
  flex: 1;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 34px;
}

.step-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  flex-shrink: 0;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.35);
}

.step-text h4 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 5px;
  letter-spacing: 0.02em;
}

.step-text p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-card {
  background: var(--card-bg);
  border-radius: 18px;
  padding: 26px;
  border: 1px solid rgba(139, 92, 246, 0.06);
  transition: transform 0.35s, box-shadow 0.35s, border-color 0.35s;
}

.review-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 45px rgba(139, 92, 246, 0.22);
  border-color: rgba(139, 92, 246, 0.25);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}

.review-stars .star {
  color: #f59e0b;
  font-size: 1.05rem;
}

.review-text {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

.review-author {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.review-author .name {
  color: var(--accent);
  font-weight: 600;
}

.footer {
  padding: 55px 0 35px;
  border-top: 1px solid rgba(139, 92, 246, 0.1);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.3s;
}

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

.footer-copy {
  font-size: 0.83rem;
  color: var(--text-muted);
}

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.35s, visibility 0.35s, transform 0.35s, box-shadow 0.35s;
  box-shadow: 0 6px 25px rgba(139, 92, 246, 0.45);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 35px rgba(139, 92, 246, 0.65);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--card-bg);
  border-radius: 22px;
  padding: 44px;
  max-width: 450px;
  width: 90%;
  text-align: center;
  border: 1px solid rgba(139, 92, 246, 0.25);
  transform: translateY(25px);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-icon {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 22px;
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}

.modal h3 {
  font-size: 1.45rem;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.modal p {
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.6;
}

@media (min-width: 1200px) {
  .banner {
    align-items: center;
    padding-top: var(--nav-height);
  }
}

@media (max-width: 1199px) {
  .banner .container {
    flex-direction: column;
    gap: 45px;
    text-align: center;
  }

  .banner-desc,
  .banner-features {
    margin-left: auto;
    margin-right: auto;
  }

  .banner-feature {
    justify-content: center;
  }

  .banner-buttons {
    justify-content: center;
  }

  .scene-slide {
    width: 240px;
  }

  .scene-slide img {
    height: 320px;
  }

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

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

  .custom-section .container {
    flex-direction: column;
    gap: 45px;
  }

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

@media (max-width: 767px) {
  .section {
    padding: 65px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .section-subtitle {
    font-size: 0.92rem;
    margin-bottom: 35px;
  }

  .header .container {
    justify-content: space-between;
  }

  .logo {
    flex-shrink: 0;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.55);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.38s ease, visibility 0.38s ease;
    z-index: 999;
  }

  .nav-menu.active {
    opacity: 1;
    visibility: visible;
  }

  .nav-menu ul {
    position: absolute;
    top: 0;
    right: 0;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: linear-gradient(160deg, rgba(20, 20, 38, 0.99) 0%, rgba(15, 15, 26, 0.98) 100%);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    gap: 6px;
    padding: 100px 28px 40px;
    transform: translateX(100%);
    transition: transform 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-left: 1px solid rgba(139, 92, 246, 0.18);
    box-shadow: -8px 0 40px rgba(0, 0, 0, 0.5);
    list-style: none;
  }

  .nav-menu.active ul {
    transform: translateX(0);
  }

  .nav-menu li a {
    display: block;
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 1.02rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--text-muted);
    transition: background 0.25s, color 0.25s, padding-left 0.25s;
    border-bottom: none;
  }

  .nav-menu li a:hover,
  .nav-menu li a.active {
    background: rgba(139, 92, 246, 0.12);
    color: var(--text-light);
    padding-left: 22px;
  }

  .nav-download-btn-mobile {
    display: inline-flex;
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  .nav-download-btn-mobile:hover {
    transform: none;
    box-shadow: none;
  }

  .nav-download-btn-pc {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hamburger:hover {
    background: rgba(139, 92, 246, 0.1);
  }

  .hamburger.active {
    background: rgba(139, 92, 246, 0.15);
  }

  .hamburger span {
    width: 22px;
    height: 2px;
  }

  .banner {
    padding-top: calc(var(--nav-height) + 70px);
  }

  .banner-title {
    font-size: 2.1rem;
  }

  .chat-card {
    width: 290px;
  }

  .scene-slide {
    width: 220px;
  }

  .scene-slide img {
    height: 400px;
  }

  .characters-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }

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

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

  .footer .container {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .back-to-top {
    bottom: 22px;
    right: 22px;
    width: 42px;
    height: 42px;
  }
}

/* ---- Icon System ---- */
i[class^="icon-"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

i[class^="icon-"]::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  background-color: currentColor;
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
}

.icon-send::before       { -webkit-mask-image: url("../fonts/icon-send.svg"); mask-image: url("../fonts/icon-send.svg"); }
.icon-user::before       { -webkit-mask-image: url("../fonts/icon-user.svg"); mask-image: url("../fonts/icon-user.svg"); }
.icon-person::before     { -webkit-mask-image: url("../fonts/icon-person.svg"); mask-image: url("../fonts/icon-person.svg"); }
.icon-pen::before        { -webkit-mask-image: url("../fonts/icon-pen.svg"); mask-image: url("../fonts/icon-pen.svg"); }
.icon-voice::before      { -webkit-mask-image: url("../fonts/icon-voice.svg"); mask-image: url("../fonts/icon-voice.svg"); }
.icon-layers::before     { -webkit-mask-image: url("../fonts/icon-layers.svg"); mask-image: url("../fonts/icon-layers.svg"); }
.icon-pulse::before      { -webkit-mask-image: url("../fonts/icon-pulse.svg"); mask-image: url("../fonts/icon-pulse.svg"); }
.icon-phone::before      { -webkit-mask-image: url("../fonts/icon-phone.svg"); mask-image: url("../fonts/icon-phone.svg"); }
.icon-chevron-up::before { -webkit-mask-image: url("../fonts/icon-chevron-up.svg"); mask-image: url("../fonts/icon-chevron-up.svg"); }
.icon-check-circle::before { -webkit-mask-image: url("../fonts/icon-check-circle.svg"); mask-image: url("../fonts/icon-check-circle.svg"); }

.character-avatar .icon-user {
  width: 44px;
  height: 44px;
  color: #fff;
}

.chat-card-input button .icon-send {
  width: 14px;
  height: 14px;
  color: #fff;
}

.back-to-top .icon-chevron-up {
  width: 18px;
  height: 18px;
  color: #fff;
}

.modal-icon .icon-check-circle {
  width: 32px;
  height: 32px;
  color: #fff;
}