@import url('https://fonts.googleapis.com/css?family=Montserrat:400,700&display=swap');

:root {
  --bg: #F6F8FA;
  --white: #fff;
  --primary: #3D5AFE;
  --primary-dark: #2633C5;
  --accent: #00E676;
  --gray: #cfd8dc;
  --text: #23272F;
  --light-text: #666;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Montserrat', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: var(--white);
  border-bottom: 1px solid var(--gray);
  padding: 15px 0 0 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 7px;
}
.logo {
  height: 54px;
}
nav {
  display: flex;
  gap: 10px;
}
nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  margin: 0 10px;
  padding: 7px 17px;
  border-radius: 25px;
  transition: background 0.18s, color 0.18s;
}
nav a.active,
nav a:hover {
  color: var(--white);
  background: var(--primary);
}
.hero {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 60px 0 50px 0;
  text-align: center;
  position: relative;
}
.hero .accent {
  color: var(--accent);
  font-weight: bold;
}
.subtitle {
  font-size: 1.3em;
  margin: 15px 0 35px 0;
  color: #d1eaff;
}
.ripple {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  transform: scale(0);
  animation: ripple 0.6s linear;
  background: rgba(61,90,254,0.22);
  width: 100px;
  height: 100px;
  left: 50%;
  top: 50%;
  margin-left: -50px;
  margin-top: -50px;
  z-index: 4;
}
@keyframes ripple {
  to {
    transform: scale(2.2);
    opacity: 0;
  }
}
.btn {
  display: inline-block;
  font-size: 1.12em;
  padding: 13px 38px;
  border: 0;
  border-radius: 27px;
  background: var(--primary);
  color: var(--white);
  cursor: pointer;
  transition: background 0.18s, box-shadow 0.18s;
  font-weight: 700;
  margin: 9px 8px 0 0;
  text-decoration: none;
  box-shadow: 0 2px 8px #3d5afe22;
  position: relative;
  overflow: hidden;
}
.btn.primary-btn {
  background: var(--primary-dark);
}
.btn.secondary {
  background: var(--accent);
  color: #212e3e;
}
.btn:hover {
  background: var(--accent);
  color: var(--primary-dark);
}
.benefits {
  padding: 55px 0 20px 0;
  background: var(--white);
}
.benefits-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 24px;
  margin-top: 28px;
}
.benefit {
  background: var(--bg);
  border-radius: 14px;
  padding: 28px 24px;
  box-shadow: 0 1px 9px #cfd8dc44;
  max-width: 330px;
  text-align: center;
  flex: 1 1 200px;
}
.how-works {
  padding: 51px 0 20px 0;
}
.steps {
  list-style: decimal inside;
  font-size: 1.14em;
  margin: 12px 0 6px 0;
  padding: 0 0 0 14px;
}
.demo-link a {
  color: var(--primary);
  text-decoration: underline;
}
.audience {
  background: var(--white);
  padding: 45px 0 18px 0;
}
.audience-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  margin-top: 23px;
}
.audience-item {
  background: var(--bg);
  border-radius: 14px;
  padding: 18px 18px;
  flex: 1 1 180px;
  text-align: center;
  box-shadow: 0 1px 10px #2633c511;
}
.cta {
  background: linear-gradient(120deg, var(--accent) 0%, var(--primary) 100%);
  color: var(--white);
  padding: 55px 0 36px 0;
  text-align: center;
}
.tg-link {
  color: var(--white);
  text-decoration: underline;
  margin-left: 9px;
  font-weight: 700;
}
footer {
  background: var(--white);
  color: var(--text);
  border-top: 1px solid var(--gray);
  padding: 21px 0 14px 0;
  margin-top: 30px;
  text-align: center;
  font-size: 1em;
}
.features-intro, .pricing-intro {
  background: var(--bg);
  padding: 37px 0 19px 0;
  text-align: center;
}
.features-list, .pricing-table .container {
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.feature-block {
  background: var(--white);
  box-shadow: 0 1px 9px #cfd8dc44;
  border-radius: 13px;
  padding: 25px 28px;
  max-width: 670px;
  margin: 0 auto;
}
.feature-block h2 {
  margin-bottom: 6px;
}
.pricing-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px;
}
.pricing-plan {
  background: var(--white);
  border: 2px solid var(--gray);
  border-radius: 15px;
  padding: 32px 29px;
  min-width: 240px;
  box-shadow: 0 3px 17px #3d5afe14;
  flex: 1 1 260px;
  max-width: 340px;
  text-align: center;
  transition: border 0.18s, box-shadow 0.18s;
  margin-bottom: 15px;
}
.pricing-plan.popular {
  border: 2px solid var(--primary);
  background: #f3f6ff;
}
.pricing-plan h2 {
  margin-bottom: 4px;
}
.price {
  font-size: 2em;
  color: var(--primary-dark);
  margin: 9px 0 16px 0;
}
.pricing-plan ul {
  text-align: left;
  margin: 0 0 18px 0;
  padding: 0 0 0 18px;
  color: var(--light-text);
}
.pricing-plan ul li.muted {
  opacity: 0.5;
  text-decoration: line-through;
}
.contact-form-section {
  background: var(--white);
  padding: 33px 0 28px 0;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 13px;
  max-width: 420px;
  margin: 0 auto 20px auto;
  background: var(--bg);
  padding: 22px 23px 25px 23px;
  border-radius: 16px;
  box-shadow: 0 2px 13px #cfd8dc49;
}
.contact-form input, .contact-form textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1.7px solid var(--gray);
  border-radius: 7px;
  outline: none;
  transition: border 0.16s;
  background: var(--white);
  color: var(--text);
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--primary);
}
.contact-form textarea {
  min-height: 79px;
  resize: vertical;
}
.contacts-block {
  margin: 29px auto 0 auto;
  max-width: 440px;
  background: var(--bg);
  border-radius: 13px;
  padding: 26px 14px 19px 20px;
  box-shadow: 0 2px 10px #cfd8dc30;
}
.contacts-block ul {
  list-style: none;
  padding: 0;
  font-size: 1.07em;
}
.contacts-block a {
  color: var(--primary);
  font-weight: 500;
  text-decoration: none;
}
.contacts-block a:hover {
  text-decoration: underline;
}
.benefits, .how-works, .audience, .cta, .features-list, .pricing-row, .contact-form-section, .contacts-block {
  opacity: 0.2;
  transform: translateY(80px);
  transition: opacity 0.65s cubic-bezier(.85,0,.22,1), transform 0.65s cubic-bezier(.85,0,.22,1);
}
.logo-text {
  font-size: 2.15em;
  font-weight: 900;
  letter-spacing: 0.6px;
  background: linear-gradient(90deg, var(--primary) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo-text .ai-accent {
  color: var(--accent);
  background: unset;
  -webkit-text-fill-color: var(--accent);
}
.hero-xxl {
  min-height: 380px;
  padding: 75px 0 60px 0;
}
.hero .tag {
  background: #eceaff;
  color: var(--primary);
  border-radius: 15px;
  padding: 2px 12px 2px 12px;
  font-size: 0.96em;
  margin: 0 0 0 8px;
  display: inline-block;
}
.big-benefits .benefits-list {
  gap: 33px;
  margin-top: 48px;
}
.big-benefits .benefit {
  font-size: 1.14em;
  max-width: 375px;
  padding: 32px 30px;
}
.styled-icon-steps .icon-steps {
  display: flex;
  justify-content: center;
  gap: 38px;
  margin: 37px 0 10px 0;
  flex-wrap: wrap;
}
.styled-icon-steps .step {
  background: var(--white);
  box-shadow: 0 1px 8px #4954ff15;
  border-radius: 15px;
  padding: 32px 23px 25px 23px;
  text-align: center;
  max-width: 265px;
  min-width: 180px;
}
.icon-circle {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  border-radius: 50%;
  line-height: 40px;
  font-size: 1.22em;
  font-weight: 700;
  display: inline-block;
  margin-bottom: 16px;
  margin-top: 5px;
}
.xxl-audience .audience-list {
  gap: 26px;
  justify-content: center;
}
.xxl-audience .audience-item {
  min-width: 190px;
  max-width: 340px;
  font-size: 1.14em;
  padding: 26px 22px;
}
.proof {
  background: linear-gradient(103deg, var(--accent) 0%, var(--primary) 66%, #fff 100%);
  color: var(--text);
  padding: 50px 0 40px 0;
}
.proof-row {
  display: flex;
  gap: 25px;
  justify-content: center;
  margin-top: 28px;
  flex-wrap: wrap;
}
.proof-col {
  background: var(--white);
  border-radius: 14px;
  box-shadow: 0 1px 12px #89ff8122;
  padding: 30px 28px 22px 28px;
  font-style: italic;
  max-width: 410px;
  position: relative;
}
.proof-user {
  display: block;
  margin-top: 17px;
  color: var(--primary-dark);
  font-size: 1em;
  font-style: normal;
}
.tech {
  background: #ecefff;
  padding: 48px 0 20px 0;
}
.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 33px;
  justify-content: center;
  margin-top: 26px;
}
.tech-item {
  background: var(--white);
  border-radius: 11px;
  box-shadow: 0 1px 8px #3d5afe15;
  padding: 22px 27px;
  font-size: 1.11em;
  font-weight: 500;
  max-width: 340px;
  text-align: center;
}
.hero .accent,
.accent {
  color: var(--accent) !important;
  font-weight: 800;
  background: unset;
  -webkit-text-fill-color: unset;
}
@media (max-width: 900px) {
  .benefits-list, .audience-list, .pricing-row {
    flex-direction: column;
    align-items: stretch;
  }
  .header, .container {
    flex-direction: column;
    align-items: center;
  }
  .styled-icon-steps .icon-steps, .proof-row, .tech-list, .big-benefits .benefits-list, .audience-list {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }
  .logo-text {
    font-size: 1.33em;
  }
}
@media (max-width: 600px) {
  .container {
    padding: 0 7px;
  }
  .logo {
    height: 43px;
  }
  .feature-block, .contacts-block {
    padding: 13px 5px 19px 10px;
  }
  nav a {
    padding: 7px 8px;
  }
  .pricing-plan {
    padding: 18px 8px;
    min-width: 170px;
    max-width: 98vw;
  }
}
/* ДЕМО: Загрузка аудио */
.demo-upload {
  padding: 80px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
}

.demo-upload h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.demo-upload .subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.upload-form {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.upload-form input[type="file"] {
  padding: 12px 20px;
  background: white;
  border: 2px solid #3d5afe;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

.upload-status {
  margin: 1rem 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.upload-status .loading {
  color: #ffd700;
}

.upload-status .success {
  color: #4caf50;
}

.upload-status .error {
  color: #ff4444;
}

.upload-result {
  margin-top: 2rem;
  text-align: left;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.result-card {
  background: white;
  color: #333;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 1rem;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.result-card h3 {
  margin-bottom: 0.5rem;
  color: #3d5afe;
}

.result-card pre {
  background: #f5f5f5;
  padding: 10px;
  border-radius: 4px;
  overflow-x: auto;
  white-space: pre-wrap;
}

.result-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}