*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0B1026;
  --color-surface: #1A1F3D;
  --color-primary: #7B2FFF;
  --color-silver: #C0C4D0;
  --color-accent: #FF4D2E;
  --color-text: #F5F5F7;
  --color-muted: rgba(192, 196, 208, 0.72);
  --color-glass: rgba(255, 255, 255, 0.08);
  --border-line: rgba(192, 196, 208, 0.16);
  --header-h: 76px;
  --container: 1280px;
  --radius-md: 8px;
  --font-display: "Roboto Condensed", "DIN Alternate", "Arial Narrow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.32);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  background: var(--color-bg);
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  word-break: break-word;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 0 0 8px 8px;
  font-size: 14px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.container--narrow {
  max-width: 880px;
}

.main-content {
  min-height: 60vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 16, 38, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-line);
}

.site-header::before,
.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  width: 46px;
  height: 2px;
  pointer-events: none;
}

.site-header::before {
  left: 0;
  background: linear-gradient(90deg, var(--color-primary), transparent);
}

.site-header::after {
  right: 0;
  background: linear-gradient(90deg, transparent, var(--color-accent));
}

.site-header__frame {
  position: relative;
  max-width: var(--container);
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--color-text);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #3A1C6E 100%);
  color: #fff;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
  transform: skewX(-6deg);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand__text strong {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.1;
  transform: skewX(-4deg);
}

.brand__text small {
  margin-top: 3px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--color-silver);
  text-transform: uppercase;
}

.main-nav {
  margin-left: auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 2px;
}

.main-nav a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 4px;
  color: var(--color-silver);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-text);
  background: rgba(123, 47, 255, 0.14);
}

.main-nav a[aria-current="page"] {
  color: var(--color-text);
  background: rgba(123, 47, 255, 0.18);
}

.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--color-accent);
  transform: skewX(-20deg);
}

.main-nav a[aria-current="page"] .nav-index {
  color: var(--color-accent);
}

.nav-index {
  min-width: 22px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-shrink: 0;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-right: 16px;
  border-right: 1px solid var(--border-line);
  font-size: 13px;
  color: var(--color-silver);
  white-space: nowrap;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(255, 77, 46, 0.7);
  animation: statusPulse 2s infinite;
}

@keyframes statusPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 77, 46, 0.6);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(255, 77, 46, 0);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  clip-path: polygon(0 0, calc(100% - 11px) 0, 100% 50%, calc(100% - 11px) 100%, 0 100%, 11px 50%);
  padding-left: 28px;
  padding-right: 28px;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 77, 46, 0.28);
}

.btn--ghost {
  border-color: var(--border-line);
  background: transparent;
  color: var(--color-silver);
}

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

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.header-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 0 12px rgba(123, 47, 255, 0.5);
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 20;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 1px solid var(--border-line);
  border-radius: 4px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--color-text);
  transition: transform 0.2s, background 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  margin-top: 80px;
  border-top: 1px solid var(--border-line);
  background: linear-gradient(180deg, var(--color-surface) 0%, rgba(26, 31, 61, 0.7) 100%);
  color: var(--color-silver);
}

.site-footer__map {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 28px 36px;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.8fr;
  gap: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-brand__title {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-text);
  transform: skewX(-4deg);
}

.footer-brand__note {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-links a {
  position: relative;
  display: inline-block;
  padding: 2px 0;
  color: var(--color-silver);
  font-size: 15px;
  transition: color 0.2s, transform 0.2s;
}

.footer-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 18px;
  height: 1px;
  background: var(--color-primary);
  transition: width 0.2s;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-text);
  transform: translateX(4px);
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--color-muted);
}

.footer-contact__label {
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.site-footer__bar {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
  border-top: 1px solid rgba(192, 196, 208, 0.1);
  font-size: 13px;
  color: var(--color-muted);
}

.back-to-top {
  margin-left: auto;
  padding: 8px 14px;
  border: 1px solid var(--border-line);
  border-radius: 4px;
  background: transparent;
  color: var(--color-silver);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 4px;
  font-size: 13px;
  color: var(--color-silver);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-primary);
}

.breadcrumb a {
  color: var(--color-primary);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--color-text);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-left: 14px;
  border-left: 3px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 5.2rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transform: skewX(-4deg);
  transform-origin: left center;
  margin-bottom: 16px;
}

.section-title em {
  color: var(--color-primary);
  font-style: normal;
}

.section-subtitle {
  max-width: 640px;
  color: var(--color-muted);
  font-size: 16px;
}

.grid {
  display: grid;
  gap: 28px;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 24px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(123, 47, 255, 0.4);
  background: rgba(123, 47, 255, 0.08);
}

.card__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card__text {
  color: var(--color-muted);
  font-size: 15px;
}

.glass-panel {
  padding: 28px;
  border: 1px solid var(--border-line);
  border-radius: 14px;
  background: var(--color-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.data-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-silver);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.data-chip strong {
  color: var(--color-accent);
  font-size: 18px;
}

.data-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px rgba(255, 77, 46, 0.7);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border-line);
  background:
    radial-gradient(circle at 75% 20%, rgba(123, 47, 255, 0.28), transparent 40%),
    linear-gradient(135deg, rgba(26, 31, 61, 0.8), rgba(11, 16, 38, 0.95));
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(123, 47, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(123, 47, 255, 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
  mix-blend-mode: screen;
  pointer-events: none;
}

.media-frame::after {
  content: "BIBO";
  position: absolute;
  inset: auto 16px 12px auto;
  padding: 4px 8px;
  background: rgba(11, 16, 38, 0.65);
  border-radius: 2px;
  color: var(--color-silver);
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.22em;
  z-index: 2;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 2;
}

.media-frame--portrait {
  aspect-ratio: 3 / 4;
}

.media-frame--wide {
  aspect-ratio: 21 / 9;
}

@media (min-width: 881px) {
  .main-nav {
    display: block !important;
  }
}

@media (max-width: 1024px) {
  .site-header__frame {
    gap: 14px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .main-nav a {
    font-size: 14px;
    padding: 10px 9px;
  }

  .header-status {
    display: none;
  }
}

@media (max-width: 880px) {
  .header-controls {
    display: none;
  }

  .main-nav {
    position: absolute;
    top: calc(var(--header-h) - 1px);
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 16px 20px 24px;
    background: rgba(11, 16, 38, 0.96);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-line);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  .main-nav[data-open] {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .main-nav a {
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px solid rgba(192, 196, 208, 0.08);
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav a[aria-current="page"] {
    background: rgba(123, 47, 255, 0.16);
  }

  .nav-toggle {
    display: block;
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .site-footer__map {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .container,
  .site-header__frame,
  .site-footer__map,
  .site-footer__bar {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand__text small {
    display: none;
  }

  .site-footer__map,
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .site-footer__map {
    padding-top: 32px;
  }

  .site-footer__bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .back-to-top {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .status-dot {
    box-shadow: 0 0 8px rgba(255, 77, 46, 0.5);
  }

  .card:hover,
  .btn--primary:hover,
  .footer-links a:hover {
    transform: none;
  }
}