/* =============================================================
   竞博电竞 Site Kit 共享样式 /assets/site.css
   设计语言：赛博档案 · 竞技动量
   ============================================================= */

/* ---------- 1. Reset & Tokens ---------- */
:root {
  --color-bg: #0A0E17;
  --color-surface: #111826;
  --color-paper: #E8E0D4;
  --color-accent: #39FF14;
  --color-accent-alt: #BF00FF;
  --color-text: #F5F7FA;
  --color-text-muted: #A3B2C7;
  --color-border: #2A3445;
  --color-warning: #FFD166;
  --color-success: #00E5A0;
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1280px;
  --header-height: 72px;
  --transition: 0.25s ease;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  padding-top: var(--header-height);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  word-break: break-word;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-text);
}

h1 {
  font-size: clamp(40px, 6vw, 72px);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(28px, 4vw, 48px);
}

h3 {
  font-size: 24px;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

button {
  font-family: inherit;
  font-size: 100%;
  line-height: 1;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

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

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

/* ---------- 2. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 9999;
  padding: 10px 20px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.skip-link:hover {
  text-decoration: none;
}

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

/* ---------- 3. Scroll Progress ---------- */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-alt) 100%);
  pointer-events: none;
  will-change: transform;
}

/* ---------- 4. Site Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(10, 14, 23, 0.87);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-color: var(--color-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.site-header__inner {
  position: relative;
  max-width: var(--container-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--color-text);
  text-decoration: none;
}

.site-header__brand:hover {
  text-decoration: none;
}

/* ---------- 5. Brand Mark / Text ---------- */
.brand-mark {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.brand-mark__frame {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-accent);
  border-radius: 2px;
  transform: translate(-50%, -50%) rotate(45deg);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.25);
  transition: box-shadow 0.25s ease;
}

.brand-mark__core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--color-accent-alt);
  transform: translate(-50%, -50%) rotate(45deg);
  box-shadow: 0 0 10px rgba(191, 0, 255, 0.7);
}

.site-header__brand:hover .brand-mark__frame {
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.55);
}

.site-header__brand:hover .brand-mark__core {
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.7);
}

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

.brand-text__cn {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

.brand-text__en {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* ---------- 6. Site Navigation ---------- */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.site-nav__item {
  margin: 0;
  padding: 0;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text);
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-accent);
  text-decoration: none;
}

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

.site-nav__idx {
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  color: var(--color-accent-alt);
}

/* ---------- 7. Nav Toggle ---------- */
.site-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: transparent;
  transition: border-color 0.2s ease;
}

.site-nav-toggle:hover {
  border-color: var(--color-accent);
}

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

.site-nav-toggle:hover .site-nav-toggle__bar {
  background: var(--color-accent);
}

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

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

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

/* ---------- 8. Site Footer ---------- */
.site-footer {
  margin-top: 80px;
  background: #060A12;
  border-top: 1px solid var(--color-border);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  height: 2px;
  width: 240px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-alt), transparent);
  pointer-events: none;
}

.site-footer__grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 48px;
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1.2fr;
  gap: 40px;
}

.site-footer__brand {
  min-width: 0;
}

.site-footer__brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--color-text);
  text-decoration: none;
}

.site-footer__brand-link:hover {
  text-decoration: none;
}

.site-footer__desc {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.site-footer__trust {
  margin: 0;
  padding: 8px 12px;
  background: rgba(255, 209, 102, 0.06);
  border-left: 2px solid var(--color-warning);
  color: var(--color-warning);
  font-size: 13px;
  line-height: 1.6;
}

.site-footer__nav,
.site-footer__legal,
.site-footer__contact {
  min-width: 0;
}

.site-footer__heading {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text);
}

.site-footer__heading::before {
  content: "// ";
  color: var(--color-accent);
}

.site-footer__list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.site-footer__list a {
  color: var(--color-text-muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.site-footer__list a:hover {
  color: var(--color-accent);
  padding-left: 4px;
  text-decoration: none;
}

.site-footer__note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  font-size: 13px;
  color: var(--color-text-muted);
}

.site-footer__contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.site-footer__contact-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.site-footer__contact-list li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  align-self: center;
  background: var(--color-accent-alt);
  transform: rotate(45deg);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
}

.site-footer__bottom-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 16px;
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ---------- 9. Layout & Body Modifiers ---------- */
.site-main {
  position: relative;
  min-height: 70vh;
}

.has-page-hero {
  padding-top: 0;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 860px;
}

/* ---------- 10. Sections & Headings ---------- */
.section {
  padding: 64px 0;
}

.section--tight {
  padding: 32px 0;
}

.section--numbered {
  position: relative;
  padding-top: 80px;
}

.section--numbered::before {
  content: attr(data-index);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  font-family: var(--font-display);
  font-size: clamp(64px, 10vw, 160px);
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-border);
  pointer-events: none;
}

.section--numbered > * {
  position: relative;
  z-index: 1;
}

.section-kicker {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.section-intro {
  max-width: 680px;
  margin-bottom: 32px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ---------- 11. Grid ---------- */
.grid {
  display: grid;
  gap: 24px;
}

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

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

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ---------- 12. Card / Tag / Button ---------- */
.card {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(57, 255, 20, 0.28);
  border-radius: 2px;
  background: rgba(57, 255, 20, 0.08);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-transform: uppercase;
}

.tag--purple {
  border-color: rgba(191, 0, 255, 0.28);
  background: rgba(191, 0, 255, 0.08);
  color: var(--color-accent-alt);
}

.tag--paper {
  border-color: var(--color-paper);
  background: var(--color-paper);
  color: var(--color-bg);
}

.tag--warn {
  border-color: rgba(255, 209, 102, 0.3);
  background: rgba(255, 209, 102, 0.08);
  color: var(--color-warning);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 2px solid transparent;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(57, 255, 20, 0.25);
  text-decoration: none;
}

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

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

.btn--ghost:hover {
  background: rgba(57, 255, 20, 0.1);
  box-shadow: none;
}

.btn--dark {
  background: var(--color-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--dark:hover {
  box-shadow: 0 8px 24px rgba(57, 255, 20, 0.2);
}

/* ---------- 13. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-size: 14px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- 14. Image Frame ---------- */
.image-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

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

.image-frame--square {
  aspect-ratio: 1 / 1;
}

.image-frame--accent {
  border-color: rgba(57, 255, 20, 0.4);
}

.image-frame [data-img] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-frame__label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  letter-spacing: 0.18em;
  line-height: 1.4;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background:
    linear-gradient(135deg, rgba(17, 24, 38, 0.65) 25%, transparent 25%),
    linear-gradient(225deg, rgba(17, 24, 38, 0.65) 25%, transparent 25%);
  background-size: 24px 24px;
}

.image-frame--accent::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
}

/* ---------- 15. Data Table & Utility ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.data-table th {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-surface);
}

.data-table tbody tr:hover {
  background: rgba(57, 255, 20, 0.04);
}

.hr {
  height: 1px;
  margin: 32px 0;
  border: 0;
  background: var(--color-border);
}

.surface--paper {
  background: var(--color-paper);
  color: var(--color-bg);
}

.surface--paper .section-title,
.surface--paper h2,
.surface--paper h3 {
  color: var(--color-bg);
}

.surface--paper a {
  color: var(--color-bg);
  text-decoration: underline;
}

.surface--alt {
  background: var(--color-surface);
}

/* ---------- 16. Responsive ---------- */
@media (max-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 959px) {
  .site-nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    padding: 8px 24px 20px;
    background: rgba(10, 14, 23, 0.98);
    border-bottom: 1px solid var(--color-border);
  }

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

  .site-nav__list {
    flex-direction: column;
    gap: 0;
  }

  .site-nav__link {
    width: 100%;
    padding: 14px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__idx {
    margin-left: auto;
  }
}

@media (max-width: 767px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 40px 0;
  }

  .container {
    padding: 0 20px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    padding: 40px 20px 32px;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__bottom-inner {
    padding: 16px 20px;
  }
}

/* ---------- 17. 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;
  }
}