/* ==========================================================================
   开云官方主站 · 共享样式
   Site: cloud-kaiyunguan.com.cn
   ========================================================================== */

/* ---------- 1. Reset & Tokens ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  color-scheme: dark;
  --ky-bg-deep: #0B1D3A;
  --ky-bg-blue: #16305C;
  --ky-bg-blue-light: #1E3A6E;
  --ky-cream: #F5F1E6;
  --ky-dark: #1A120C;
  --ky-green: #39FF14;
  --ky-orange: #FF6B00;
  --ky-red: #E4572E;
  --ky-gray: #6B7280;

  --ky-font-head: Impact, "Arial Narrow Bold", "Franklin Gothic Bold", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ky-font-mono: "IBM Plex Mono", "Roboto Mono", "Courier New", "PingFang SC", "Microsoft YaHei", monospace;

  --ky-contain-max: 1280px;
  --ky-gutter: clamp(16px, 4vw, 48px);
  --ky-header-h: 80px;
  --ky-radius-lg: 16px;
  --ky-radius-md: 10px;
  --ky-radius-sm: 4px;
  --ky-transition: 180ms ease;
}

/* ---------- 2. Base ---------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--ky-header-h) + 24px);
}

body {
  background: var(--ky-bg-deep);
  color: var(--ky-cream);
  font-family: var(--ky-font-mono);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--ky-font-head);
  font-weight: 900;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: inherit;
}

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

button {
  font-family: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

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

ul[class] {
  list-style: none;
}

:focus-visible {
  outline: 3px solid var(--ky-green);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--ky-green);
  color: var(--ky-dark);
}

/* ---------- 3. Accessibility ---------- */
.ky-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  margin: -1px;
  padding: 0;
  border: 0;
}

.ky-skip {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 3000;
  background: var(--ky-green);
  color: var(--ky-dark);
  font-weight: 700;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 6px;
  transition: top 180ms ease;
}

.ky-skip:focus-visible {
  top: 12px;
}

@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;
  }
}

/* ---------- 4. Layout Primitives ---------- */
.ky-container {
  width: 100%;
  max-width: var(--ky-contain-max);
  margin-inline: auto;
  padding-inline: var(--ky-gutter);
}

.ky-section {
  padding-block: 64px 32px;
}

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

.ky-clip-corner {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.ky-speed-lines {
  height: 36px;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 29, 58, 0) 0%, rgba(11, 29, 58, 0.4) 100%),
    repeating-linear-gradient(
      -55deg,
      transparent 0 14px,
      rgba(57, 255, 20, 0.08) 14px 16px,
      transparent 16px 30px
    );
}

/* ---------- 5. Common Components ---------- */
.ky-card {
  background: var(--ky-cream);
  color: var(--ky-dark);
  border-radius: var(--ky-radius-md);
  padding: 24px;
  position: relative;
}

.ky-card__title {
  font-family: var(--ky-font-head);
  font-size: 20px;
  color: var(--ky-dark);
  margin-bottom: 8px;
}

.ky-card__stat {
  font-family: var(--ky-font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--ky-bg-deep);
}

.ky-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--ky-font-head);
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  border-radius: var(--ky-radius-sm);
  white-space: nowrap;
  transition:
    background var(--ky-transition),
    color var(--ky-transition),
    border-color var(--ky-transition),
    transform var(--ky-transition);
}

.ky-btn--primary {
  background: var(--ky-orange);
  color: var(--ky-dark);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.ky-btn--primary:hover {
  background: #ff8a3d;
  color: var(--ky-dark);
  transform: translateY(-2px);
}

.ky-btn--ghost {
  background: transparent;
  border: 2px solid rgba(245, 241, 230, 0.45);
  color: var(--ky-cream);
}

.ky-btn--ghost:hover {
  border-color: var(--ky-green);
  color: var(--ky-green);
}

.ky-tag {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid var(--ky-green);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ky-green);
  letter-spacing: 1px;
  text-transform: uppercase;
  background: rgba(57, 255, 20, 0.08);
}

.ky-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: rgba(245, 241, 230, 0.6);
  margin-bottom: 24px;
}

.ky-breadcrumb a {
  color: var(--ky-green);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.ky-breadcrumb a:hover {
  color: var(--ky-cream);
}

.ky-breadcrumb__sep {
  color: rgba(245, 241, 230, 0.35);
}

.ky-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--ky-radius-md);
  background: linear-gradient(135deg, var(--ky-bg-blue) 0%, var(--ky-bg-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(245, 241, 230, 0.35);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.ky-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    -55deg,
    transparent 0 18px,
    rgba(57, 255, 20, 0.05) 18px 20px,
    transparent 20px 40px
  );
}

.ky-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* ---------- 6. Site Header ---------- */
.ky-site-head {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 29, 58, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(245, 241, 230, 0.08);
}

.ky-site-head__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--ky-header-h);
}

.ky-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--ky-green);
  transform: scaleX(0);
  transform-origin: left;
  z-index: 2000;
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.4);
  pointer-events: none;
}

.ky-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.ky-logo__mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 46px;
  background: var(--ky-cream);
  color: var(--ky-dark);
  font-family: var(--ky-font-head);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 1px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.ky-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.ky-logo__text strong {
  font-family: var(--ky-font-head);
  font-size: 20px;
  letter-spacing: 3px;
  color: var(--ky-cream);
}

.ky-logo__text small {
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--ky-green);
  text-transform: uppercase;
}

.ky-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px;
  background: rgba(22, 48, 92, 0.7);
  border: 1px solid rgba(245, 241, 230, 0.15);
  border-radius: 999px;
}

.ky-nav__link {
  display: block;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--ky-cream);
  white-space: nowrap;
  transition:
    background var(--ky-transition),
    color var(--ky-transition);
}

.ky-nav__link:hover {
  background: rgba(245, 241, 230, 0.12);
  color: var(--ky-green);
}

.ky-nav__link[aria-current="page"] {
  background: var(--ky-green);
  color: var(--ky-dark);
  font-weight: 700;
}

.ky-nav__link[aria-current="page"]:hover {
  color: var(--ky-dark);
}

.ky-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: auto;
}

.ky-head-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(22, 48, 92, 0.5);
  border: 1px solid rgba(245, 241, 230, 0.18);
  color: var(--ky-cream);
  font-size: 13px;
  white-space: nowrap;
  transition:
    border-color var(--ky-transition),
    color var(--ky-transition),
    background var(--ky-transition);
}

.ky-head-action:hover {
  border-color: var(--ky-green);
  color: var(--ky-green);
  background: rgba(22, 48, 92, 0.8);
}

.ky-head-action__label {
  font-size: 13px;
}

.ky-icon-search {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  border-radius: 50%;
  flex-shrink: 0;
}

.ky-icon-search::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 2px;
  background: currentColor;
  transform: rotate(45deg);
  bottom: -3px;
  right: -4px;
  border-radius: 1px;
}

.ky-icon-mobile {
  position: relative;
  display: inline-block;
  width: 10px;
  height: 15px;
  border: 2px solid currentColor;
  border-radius: 2px;
  flex-shrink: 0;
}

.ky-icon-mobile::after {
  content: "";
  position: absolute;
  width: 4px;
  height: 1px;
  background: currentColor;
  bottom: 2px;
  left: 3px;
}

.ky-nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  background: rgba(22, 48, 92, 0.5);
  border: 1px solid rgba(245, 241, 230, 0.2);
  border-radius: 10px;
  flex-shrink: 0;
}

.ky-nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ky-cream);
  border-radius: 1px;
  transition:
    transform 200ms ease,
    opacity 200ms ease;
}

.ky-nav-toggle.is-open .ky-nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.ky-nav-toggle.is-open .ky-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.ky-nav-toggle.is-open .ky-nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 7. Site Footer ---------- */
.ky-site-foot {
  margin-top: 64px;
  background: linear-gradient(180deg, var(--ky-bg-deep) 0%, var(--ky-bg-blue) 120%);
  border-top: 2px solid rgba(57, 255, 20, 0.4);
}

.ky-site-foot__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 40px;
  padding-block: 56px 40px;
}

.ky-site-foot__col {
  min-width: 0;
}

.ky-site-foot__brand .ky-logo {
  margin-bottom: 18px;
}

.ky-site-foot__desc {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(245, 241, 230, 0.7);
  max-width: 360px;
}

.ky-site-foot__head {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ky-cream);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ky-site-foot__head::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--ky-green);
  flex-shrink: 0;
}

.ky-site-foot__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ky-site-foot__list li {
  font-size: 14px;
  line-height: 1.5;
  color: rgba(245, 241, 230, 0.72);
}

.ky-site-foot__list a {
  font-size: 14px;
  color: rgba(245, 241, 230, 0.72);
  transition: color var(--ky-transition);
}

.ky-site-foot__list a:hover {
  color: var(--ky-green);
}

.ky-site-foot__bottom {
  border-top: 1px solid rgba(245, 241, 230, 0.1);
  padding-block: 20px;
}

.ky-site-foot__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 24px;
  font-size: 12px;
  letter-spacing: 0.5px;
  color: rgba(245, 241, 230, 0.55);
}

/* ---------- 8. Responsive ---------- */
@media (max-width: 992px) {
  .ky-nav {
    position: fixed;
    top: calc(var(--ky-header-h) + 12px);
    left: var(--ky-gutter);
    right: var(--ky-gutter);
    max-height: calc(100vh - var(--ky-header-h) - 24px);
    overflow-y: auto;
    background: rgba(11, 29, 58, 0.98);
    border: 1px solid rgba(245, 241, 230, 0.18);
    border-radius: var(--ky-radius-lg);
    padding: 16px;
    display: none;
    z-index: 2000;
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
  }

  .ky-nav[data-open="true"] {
    display: block;
  }

  .ky-nav__list {
    flex-direction: column;
    align-items: stretch;
    background: transparent;
    border: 0;
    padding: 0;
    gap: 4px;
  }

  .ky-nav__link {
    padding: 14px 18px;
    border-radius: var(--ky-radius-md);
    font-size: 16px;
  }

  .ky-nav__link[aria-current="page"] {
    background: var(--ky-green);
    color: var(--ky-dark);
  }

  .ky-nav-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  :root {
    --ky-header-h: 64px;
  }

  .ky-site-foot__main {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 40px 24px;
  }

  .ky-site-foot__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .ky-head-action--mobile {
    display: none;
  }
}

@media (max-width: 640px) {
  .ky-grid {
    grid-template-columns: 1fr;
  }

  .ky-logo__text small {
    display: none;
  }

  .ky-logo__mark {
    width: 44px;
    height: 40px;
    font-size: 19px;
  }

  .ky-logo__text strong {
    font-size: 18px;
    letter-spacing: 2px;
  }

  .ky-head-action__label {
    display: none;
  }

  .ky-head-action {
    padding: 8px;
  }
}

@media (max-width: 480px) {
  .ky-section {
    padding-block: 40px 24px;
  }

  .ky-card {
    padding: 18px;
  }
}