:root {
  --bibi-bg: #eaf6fb;
  --bibi-bg-gradient: linear-gradient(120deg, #eaf6fb 0%, #f2faff 100%);
  --bibi-bg-card: #ffffffcc;
  --bibi-bg-card-gradient: linear-gradient(120deg, #fff 0%, #eaf6fb 100%);
  --bibi-accent: #ff8800;
  --bibi-accent-hover: #ffb347;
  --bibi-accent-light: #fff3e0;
  --bibi-shadow: 0 2px 16px 0 rgba(30, 80, 160, 0.07), 0 1.5px 4px 0 rgba(30, 80, 160, 0.05);
  --bibi-radius: 18px;
  --bibi-radius-sm: 10px;
  --bibi-radius-lg: 32px;
  --bibi-font-main: 'Inter', 'Segoe UI', Arial, sans-serif;
  --bibi-font-size: 14px;
  --bibi-font-size-lg: 22px;
  --bibi-font-size-title: 32px;
  --bibi-text: #1b2e3b;
  --bibi-text-soft: #4d6c7e;
  --bibi-link: var(--bibi-accent);
  --bibi-link-hover: #ffb347;
  --bibi-border: 1px solid #ff880033;
  --bibi-section-gap: 52px;
  --bibi-container-max: 1240px;
  --bibi-transition: 0.22s cubic-bezier(.4,0,.2,1);
}

html, body {
  font-family: var(--bibi-font-main);
  font-size: var(--bibi-font-size);
  background: var(--bibi-bg-gradient);
  color: var(--bibi-text);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  scroll-behavior: smooth;
}

.bibi-body {
  min-height: 100vh;
  background: var(--bibi-bg-gradient);
}

.bibi-container {
  max-width: var(--bibi-container-max);
  margin: 0 auto;
  padding: 0 18px;
}

.bibi-header {
  background: var(--bibi-bg-card-gradient);
  box-shadow: var(--bibi-shadow);
  border-radius: 0 0 var(--bibi-radius-lg) var(--bibi-radius-lg);
  margin-bottom: 36px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.bibi-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--bibi-container-max);
  margin: 0 auto;
  padding: 18px 18px 14px 18px;
}

.bibi-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: filter var(--bibi-transition);
}

.bibi-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  box-shadow: 0 2px 8px 0 rgba(255,136,0,0.10);
  background: var(--bibi-bg);
  object-fit: cover;
  transition: box-shadow var(--bibi-transition);
}

.bibi-logo-link:hover .bibi-logo {
  box-shadow: 0 4px 18px 0 rgba(255,136,0,0.16);
}

.bibi-nav {
  margin-left: 24px;
}

.bibi-nav__list {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.bibi-nav__link {
  color: var(--bibi-link);
  text-decoration: none;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: var(--bibi-radius-sm);
  transition: background var(--bibi-transition), color var(--bibi-transition);
  font-size: 15px;
  letter-spacing: 0.02em;
  position: relative;
}

.bibi-nav__link:hover, .bibi-nav__link:focus {
  background: var(--bibi-accent-light);
  color: var(--bibi-accent-hover);
}

.bibi-main {
  padding-bottom: 48px;
}

.bibi-section {
  margin: 0 auto var(--bibi-section-gap) auto;
  padding: 0;
}

.bibi-section__title {
  font-size: var(--bibi-font-size-lg);
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--bibi-text);
  letter-spacing: 0.01em;
}

.bibi-subtitle {
  font-size: 17px;
  font-weight: 600;
  margin: 20px 0 10px 0;
  color: var(--bibi-text-soft);
}

.bibi-list,
.bibi-list--icons {
  margin: 0 0 16px 0;
  padding: 0 0 0 0;
}

.bibi-list {
  list-style: disc inside;
  color: var(--bibi-text-soft);
  line-height: 1.7;
}

.bibi-list--icons {
  list-style: none;
  padding-left: 0;
}

.bibi-list--icons li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 8px;
}
.bibi-list--icons li::before {
  content: '';
  display: inline-block;
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--bibi-accent);
  mask: url('data:image/svg+xml;utf8,<svg fill="white" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><circle cx="12" cy="12" r="8"/></svg>') no-repeat center/contain;
  border-radius: 50%;
  opacity: 0.55;
}

.bibi-btn {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 28px;
  border-radius: var(--bibi-radius);
  border: none;
  cursor: pointer;
  transition: background var(--bibi-transition), color var(--bibi-transition), box-shadow var(--bibi-transition);
  box-shadow: 0 2px 8px 0 rgba(255,136,0,0.08);
  text-decoration: none;
  margin-right: 12px;
  margin-bottom: 8px;
  outline: none;
}

.bibi-btn--primary {
  background: var(--bibi-accent);
  color: #fff;
}
.bibi-btn--primary:hover, .bibi-btn--primary:focus {
  background: #fff;
  color: var(--bibi-accent);
  box-shadow: 0 4px 16px 0 rgba(255,136,0,0.18);
  border: var(--bibi-border);
}

.bibi-btn--ghost {
  background: #fff;
  color: var(--bibi-accent);
  border: var(--bibi-border);
}
.bibi-btn--ghost:hover, .bibi-btn--ghost:focus {
  background: var(--bibi-accent);
  color: #fff;
  border: var(--bibi-border);
  box-shadow: 0 4px 16px 0 rgba(255,136,0,0.18);
}

.bibi-hero {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius-lg);
  box-shadow: var(--bibi-shadow);
  margin-bottom: var(--bibi-section-gap);
  padding: 32px 0 32px 0;
  position: relative;
  overflow: hidden;
}

.bibi-hero__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 44px;
  align-items: center;
  max-width: var(--bibi-container-max);
  margin: 0 auto;
  padding: 0 18px;
}

.bibi-hero__col--text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.bibi-hero__title {
  font-size: var(--bibi-font-size-title);
  font-weight: 800;
  margin: 0 0 12px 0;
  color: var(--bibi-text);
  letter-spacing: 0.01em;
  line-height: 1.13;
}

.bibi-hero__tagline {
  font-size: 15px;
  color: var(--bibi-text-soft);
  margin: 0 0 18px 0;
  font-weight: 500;
}

.bibi-hero__features {
  margin: 0 0 18px 0;
  padding: 0;
  list-style: none;
}

.bibi-hero__feature {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  color: var(--bibi-text-soft);
  font-size: 14px;
  font-weight: 500;
}
.bibi-hero__feature::before {
  content: '';
  position: absolute;
  left: 0; top: 7px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--bibi-accent);
  opacity: 0.7;
}

.bibi-hero__actions {
  margin: 10px 0 18px 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.bibi-hero__note {
  font-size: 13px;
  color: var(--bibi-text-soft);
  margin-top: 8px;
  opacity: 0.8;
}

.bibi-hero__col--media {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.bibi-hero__image {
  width: 100%;
  max-width: 340px;
  border-radius: var(--bibi-radius-lg);
  box-shadow: 0 4px 24px 0 rgba(30,80,160,0.08);
  object-fit: cover;
  margin-bottom: 18px;
}

.bibi-hero__mini {
  display: flex;
  gap: 10px;
}

.bibi-hero__mini-img {
  width: 60px;
  height: 60px;
  border-radius: var(--bibi-radius);
  object-fit: cover;
  box-shadow: 0 2px 8px 0 rgba(30,80,160,0.09);
  background: var(--bibi-bg);
}

.bibi-world {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-world__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 36px;
  align-items: stretch;
  margin-bottom: 22px;
}

.bibi-world__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.bibi-world__media {
  display: flex;
  align-items: center;
  justify-content: center;
}

.bibi-world__image {
  width: 100%;
  max-width: 340px;
  border-radius: var(--bibi-radius-lg);
  object-fit: cover;
  max-height: 300px;
  box-shadow: 0 4px 24px 0 rgba(30,80,160,0.08);
}

.bibi-play {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius-lg);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-play__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.bibi-play__col {
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius);
  box-shadow: 0 2px 10px 0 rgba(30,80,160,0.05);
  padding: 22px 18px 18px 18px;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.bibi-rhythm {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-steps {
  counter-reset: bibi-step;
  margin: 0 0 18px 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.bibi-steps li {
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius-sm);
  box-shadow: 0 2px 8px 0 rgba(30,80,160,0.06);
  padding: 18px 16px 14px 16px;
  font-size: 13.5px;
  color: var(--bibi-text-soft);
  position: relative;
  min-width: 0;
}
.bibi-steps li::before {
  counter-increment: bibi-step;
  content: counter(bibi-step);
  display: inline-block;
  background: var(--bibi-accent);
  color: #fff;
  font-weight: 700;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  text-align: center;
  line-height: 26px;
  font-size: 15px;
  margin-right: 10px;
  margin-bottom: 2px;
  vertical-align: middle;
}

.bibi-remark {
  margin-top: 14px;
  color: var(--bibi-accent);
  font-weight: 500;
  font-size: 14px;
  background: var(--bibi-accent-light);
  border-radius: var(--bibi-radius-sm);
  padding: 10px 18px;
  display: inline-block;
}

.bibi-unique {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-unique__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 36px;
  align-items: stretch;
}

.bibi-unique__col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.bibi-unique__image {
  width: 100%;
  max-width: 260px;
  border-radius: var(--bibi-radius-lg);
  object-fit: cover;
  box-shadow: 0 2px 10px 0 rgba(30,80,160,0.08);
  align-self: center;
  max-height: 300px;
}

.bibi-reviews {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius-lg);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-reviews__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.bibi-review {
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius);
  box-shadow: 0 2px 10px 0 rgba(30,80,160,0.06);
  padding: 18px 16px 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
}

.bibi-quote {
  font-size: 14.5px;
  color: var(--bibi-text);
  font-style: italic;
  margin: 0 0 10px 0;
  line-height: 1.5;
}

.bibi-caption {
  font-size: 13px;
  color: var(--bibi-accent);
  font-weight: 600;
  margin-top: 4px;
  opacity: 0.8;
}

.bibi-screenshots {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.bibi-shot {
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius-sm);
  box-shadow: 0 2px 8px 0 rgba(30,80,160,0.08);
  padding: 10px 10px 8px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
}

.bibi-shot img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--bibi-radius-sm);
  margin-bottom: 8px;
  background: #f5fafd;
}

.bibi-shot .bibi-caption {
  text-align: center;
  font-size: 12.5px;
  color: var(--bibi-text-soft);
}

.bibi-content {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius-lg);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-content__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-bottom: 22px;
}

.bibi-content__col {
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius);
  box-shadow: 0 2px 10px 0 rgba(30,80,160,0.05);
  padding: 22px 18px 18px 18px;
  min-width: 0;
}

.bibi-stats {
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius-sm);
  box-shadow: 0 2px 8px 0 rgba(30,80,160,0.04);
  padding: 16px 18px 10px 18px;
  margin-top: 18px;
  max-width: 480px;
}

.bibi-faq {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius);
  box-shadow: var(--bibi-shadow);
  padding: 32px 0;
}

.bibi-faq__list {
  margin: 0;
  padding: 0;
  max-width: 800px;
}

.bibi-faq__q {
  font-weight: 700;
  color: var(--bibi-accent);
  margin-top: 18px;
  margin-bottom: 6px;
  font-size: 15px;
}

.bibi-faq__a {
  color: var(--bibi-text-soft);
  margin-bottom: 10px;
  font-size: 14px;
  background: var(--bibi-bg-card);
  border-radius: var(--bibi-radius-sm);
  padding: 10px 14px;
  box-shadow: 0 2px 8px 0 rgba(30,80,160,0.03);
}

.bibi-footer {
  background: var(--bibi-bg-card-gradient);
  border-radius: var(--bibi-radius-lg) var(--bibi-radius-lg) 0 0;
  box-shadow: 0 -2px 16px 0 rgba(30,80,160,0.07);
  padding: 32px 0 0 0;
  margin-top: 64px;
  font-size: 13px;
  color: var(--bibi-text-soft);
}

.bibi-footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 36px;
  max-width: var(--bibi-container-max);
  margin: 0 auto 16px auto;
  padding: 0 18px;
}

.bibi-footer__col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bibi-footer__logo img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin-bottom: 10px;
  background: var(--bibi-bg);
  box-shadow: 0 2px 8px 0 rgba(255,136,0,0.10);
}

.bibi-footer__desc {
  font-size: 12.5px;
  color: var(--bibi-text-soft);
  margin: 0;
  line-height: 1.5;
}

.bibi-footer__title {
  font-weight: 700;
  color: var(--bibi-accent);
  margin-bottom: 6px;
  font-size: 15px;
}

.bibi-footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bibi-footer__links a {
  color: var(--bibi-link);
  text-decoration: none;
  transition: color var(--bibi-transition);
  font-size: 13px;
  border-radius: var(--bibi-radius-sm);
  padding: 2px 6px;
  display: inline-block;
}

.bibi-footer__links a:hover, .bibi-footer__links a:focus {
  color: var(--bibi-link-hover);
  background: var(--bibi-accent-light);
}

.bibi-footer__bottom {
  max-width: var(--bibi-container-max);
  margin: 0 auto;
  padding: 18px 18px 24px 18px;
  border-top: var(--bibi-border);
  color: var(--bibi-text-soft);
  font-size: 12.5px;
  opacity: 0.8;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bibi-footer__legal {
  font-size: 12px;
  color: var(--bibi-text-soft);
  opacity: 0.7;
  margin: 0;
}

/* Responsive */
@media (max-width: 1100px) {
  .bibi-hero__grid,
  .bibi-world__grid,
  .bibi-unique__grid,
  .bibi-content__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .bibi-hero__col--media,
  .bibi-world__media,
  .bibi-unique__image {
    max-width: 100%;
    margin: 0 auto;
  }
  .bibi-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .bibi-reviews__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .bibi-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .bibi-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
}

@media (max-width: 800px) {
  .bibi-header__inner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    padding: 12px 8px 8px 8px;
  }
  .bibi-nav__list {
    gap: 10px;
  }
  .bibi-main {
    padding-bottom: 24px;
  }
  .bibi-section__title {
    font-size: 18px;
  }
  .bibi-hero__grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 8px;
  }
  .bibi-hero__image {
    max-width: 100%;
  }
  .bibi-world__grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .bibi-unique__grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .bibi-play__grid,
  .bibi-content__grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .bibi-footer__top {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 0 8px;
  }
  .bibi-reviews__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .bibi-gallery {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .bibi-steps {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 520px) {
  :root {
    --bibi-font-size: 13px;
    --bibi-font-size-lg: 16px;
    --bibi-font-size-title: 21px;
    --bibi-radius: 11px;
    --bibi-radius-lg: 18px;
    --bibi-section-gap: 28px;
  }
  .bibi-hero, .bibi-world, .bibi-play, .bibi-rhythm, .bibi-unique, .bibi-reviews, .bibi-screenshots, .bibi-content, .bibi-faq {
    padding: 16px 0;
    border-radius: var(--bibi-radius);
  }
  .bibi-header {
    border-radius: 0 0 var(--bibi-radius) var(--bibi-radius);
    margin-bottom: 18px;
  }
  .bibi-footer {
    border-radius: var(--bibi-radius) var(--bibi-radius) 0 0;
    padding: 16px 0 0 0;
    margin-top: 28px;
  }
  .bibi-footer__bottom {
    padding: 10px 8px 14px 8px;
  }
}