/* ============ RESET & BASE ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul, ol {
  list-style: none;
}

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

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

::selection {
  background: var(--accent-blue);
  color: var(--bg-deep);
}

/* ============ VARIABLES ============ */
:root {
  --bg-deep: #0A0B10;
  --bg-bluegreen: #0F3B46;
  --bg-wine: #7A1E3D;
  --bg-indigo: #5B2D8A;
  --accent-blue: #2D9FFF;
  --accent-green: #C6FF00;
  --accent-orange: #FF6A00;
  --accent-red: #FF3B30;
  --text-primary: #F2F4F8;
  --text-secondary: #8890A8;
  --header-h: 68px;
  --site-max: 1440px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Helvetica Neue', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', 'SF Mono', monospace;
}

/* ============ CONTAINER & LAYOUT ============ */
.container {
  max-width: var(--site-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 48px);
}

.section {
  padding: clamp(44px, 7vw, 88px) 0;
}

.section--tinted {
  background: rgba(45, 159, 255, 0.04);
}

.section--wine {
  background: var(--bg-wine);
}

.section--indigo {
  background: var(--bg-indigo);
}

.section__head {
  margin-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.15;
  position: relative;
}

.section__title::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 18px;
  margin-right: 10px;
  background: var(--accent-green);
  transform: skew(-12deg);
}

/* ============ GRID ============ */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

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

@media (max-width: 991px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-indigo);
  border: 1px solid rgba(242, 244, 248, 0.08);
  border-radius: 6px;
  padding: 24px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 159, 255, 0.45);
}

.card--wine {
  background: var(--bg-wine);
}

.card--bluegreen {
  background: var(--bg-bluegreen);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--accent-blue);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.05em;
  border-radius: 3px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 159, 255, 0.28);
}

.btn--primary {
  background: var(--accent-blue);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
}

.btn--outline:hover {
  background: rgba(45, 159, 255, 0.08);
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.breadcrumb li::after {
  content: "/";
  margin-left: 8px;
  color: var(--text-secondary);
  opacity: 0.6;
}

.breadcrumb li:last-child::after {
  display: none;
}

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

/* ============ SCROLL PROGRESS ============ */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
  z-index: 6;
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(10, 11, 16, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(45, 159, 255, 0.18);
}

.site-header__inner {
  max-width: var(--site-max);
  width: 100%;
  height: 100%;
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 9999;
  background: var(--accent-green);
  color: var(--bg-deep);
  padding: 12px 24px;
  font-weight: 700;
  font-size: 14px;
  border-radius: 0 0 4px 0;
}

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

/* ============ BRAND ============ */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-blue) 0%, #1B7FD8 100%);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: -0.04em;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 50%, calc(100% - 8px) 100%, 0 100%);
  transition: background var(--transition-fast);
}

.brand:hover .brand__mark {
  background: linear-gradient(135deg, var(--accent-green), #A8DF00);
}

.brand__name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  line-height: 1.2;
  white-space: nowrap;
}

/* ============ NAVIGATION ============ */
.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--accent-blue);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 22px 9px 20px;
  background: var(--accent-orange);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.site-nav__cta:hover {
  background: #FF8037;
  transform: translateX(2px);
}

/* ============ NAV TOGGLE ============ */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 1002;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(242, 244, 248, 0.25);
  border-radius: 3px;
  background: transparent;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.3s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ============ FOOTER ============ */
.site-footer {
  position: relative;
  background: var(--bg-bluegreen);
  color: var(--text-primary);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-green) 60%, var(--accent-orange) 100%);
  z-index: 1;
}

.site-footer__inner {
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 60px clamp(16px, 3vw, 48px) 44px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 48px;
}

.site-footer__brand .brand {
  margin-bottom: 4px;
}

.brand--footer .brand__mark {
  background: linear-gradient(135deg, var(--accent-green), #9FCE00);
  color: var(--bg-deep);
}

.brand--footer:hover .brand__mark {
  background: linear-gradient(135deg, var(--accent-blue), #1B7FD8);
}

.site-footer__about {
  margin: 18px 0 12px;
  max-width: 30em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 244, 248, 0.72);
}

.site-footer__trust {
  margin-top: 16px;
  padding: 12px 16px;
  border-left: 2px solid var(--accent-green);
  background: rgba(198, 255, 0, 0.05);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(242, 244, 248, 0.55);
  max-width: 32em;
}

.site-footer__column .site-footer__heading {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 20px;
}

.site-footer__heading::after {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--accent-orange);
  margin-top: 8px;
}

.site-footer__list li {
  margin-bottom: 12px;
}

.site-footer__list a {
  font-size: 14px;
  color: rgba(242, 244, 248, 0.7);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.site-footer__list a:hover {
  color: var(--accent-green);
  padding-left: 4px;
}

.site-footer__contact li {
  position: relative;
  padding-left: 14px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 244, 248, 0.78);
}

.site-footer__contact li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 2px;
  background: var(--accent-blue);
}

.site-footer__bottom {
  border-top: 1px solid rgba(242, 244, 248, 0.08);
  background: rgba(0, 0, 0, 0.22);
}

.site-footer__bottom-inner {
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 18px clamp(16px, 3vw, 48px);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: rgba(242, 244, 248, 0.55);
}

/* ============ IMAGE FRAME ============ */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(45, 159, 255, 0.15), rgba(10, 11, 16, 0.4)),
    repeating-linear-gradient(-45deg, transparent 0 12px, rgba(45, 159, 255, 0.04) 12px 13px);
  border: 1px solid rgba(45, 159, 255, 0.18);
  border-radius: 4px;
  overflow: hidden;
  isolation: isolate;
}

.img-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80px circle at 30% 20%, rgba(198, 255, 0, 0.16), transparent 60%);
  mix-blend-mode: screen;
  z-index: -1;
}

.img-frame::after {
  content: "IMG";
  position: absolute;
  right: 12px;
  bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent-blue);
  opacity: 0.6;
}

/* ============ STATS & TAGS ============ */
.stat-value {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent-green);
  line-height: 1.1;
}

.stat-value--blue {
  color: var(--accent-blue);
}

.data-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  background: rgba(45, 159, 255, 0.14);
  color: var(--accent-blue);
  border-radius: 2px;
}

.tag--hot {
  background: rgba(255, 106, 0, 0.16);
  color: var(--accent-orange);
}

.tag--warn {
  background: rgba(255, 59, 48, 0.16);
  color: #FF6B63;
}

.tag--new {
  background: rgba(198, 255, 0, 0.14);
  color: var(--accent-green);
}

/* ============ REVEAL ============ */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
  }
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ============ FOCUS ============ */
:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 3px;
}

/* ============ SCROLLBAR ============ */
@media (min-width: 992px) {
  body {
    scrollbar-color: var(--accent-blue) rgba(242, 244, 248, 0.06);
    scrollbar-width: thin;
  }

  ::-webkit-scrollbar {
    width: 10px;
  }

  ::-webkit-scrollbar-track {
    background: var(--bg-deep);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 4px;
  }
}

/* ============ RESPONSIVE: TABLET & MOBILE ============ */
@media (min-width: 992px) {
  .site-nav__cta {
    margin-left: 8px;
  }
}

@media (max-width: 991px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(340px, 82vw);
    height: 100vh;
    min-height: 100%;
    padding: calc(var(--header-h) + 20px) 26px 36px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 24px;
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
    overflow-y: auto;
    z-index: 1100;
    background: transparent;
  }

  .site-nav::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background: rgba(10, 11, 16, 0.75);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .site-nav::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(160deg, #0D1119 0%, #111827 100%);
    border-left: 1px solid rgba(45, 159, 255, 0.28);
  }

  .site-nav[data-open] {
    transform: translateX(0);
  }

  .site-nav[data-open]::before {
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    width: 100%;
  }

  .site-nav__item {
    width: 100%;
  }

  .site-nav__link {
    display: flex;
    width: 100%;
    padding: 14px 0;
    font-size: 17px;
    border-bottom: 1px solid rgba(242, 244, 248, 0.07);
  }

  .site-nav__link::after {
    left: 0;
    right: auto;
    width: 32px;
    height: 3px;
  }

  .site-nav__cta {
    margin-top: 16px;
    align-self: flex-start;
    padding: 11px 26px;
    font-size: 15px;
  }
}

@media (max-width: 767px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 48px clamp(16px, 5vw, 24px) 36px;
  }

  .site-footer__bottom-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .brand__name {
    font-size: 18px;
  }

  .section__title::before {
    width: 8px;
    height: 14px;
    margin-right: 8px;
  }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .site-nav {
    transition: none;
  }

  .nav-toggle__bar {
    transition: none;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}