/* ============================================================
   CQ电玩 · 共享样式 /assets/site.css
   赛博山城夜 · 侧边轨道导航 · 目录型内容地图
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, blockquote, dl, dd, dt {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --c-ink: #0E0C14;
  --c-paper: #F4F0E6;
  --c-graphite: #2A2733;
  --c-violet: #9B5CFF;
  --c-cyan: #2ED3F7;
  --c-orange: #FF8A3D;
  --c-moss: #4E6B54;
  --c-clay: #B4643C;
  --c-haze: #8C86A3;

  --line-soft: rgba(244, 240, 230, 0.10);
  --line-strong: rgba(244, 240, 230, 0.24);
  --line-dark: rgba(14, 12, 20, 0.16);

  --rail-w: 240px;
  --bar-h: 58px;
  --shell: 1240px;
  --gutter: clamp(18px, 3.6vw, 56px);

  --f-display: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --f-body: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--c-ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(244, 240, 230, 0.045) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(244, 240, 230, 0.035) 0 1px, transparent 1px 72px);
  background-attachment: fixed;
  color: var(--c-paper);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.005em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@keyframes veil-drift {
  0%, 100% { background-position: 0 0, 0 0; }
  50% { background-position: -3px 6px, 6px -3px; }
}

@media (min-width: 1024px) {
  body { animation: veil-drift 60s linear infinite; }
}

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

#main-content { display: block; }
#main-content:focus { outline: none; }

/* ---------- 4. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 11px 18px;
  background: var(--c-violet);
  color: #0E0C14;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 180ms var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: 3px;
}

/* ---------- 5. Header / rail ---------- */
.site-header {
  z-index: 80;
  background:
    linear-gradient(180deg, rgba(155, 92, 255, 0.10) 0%, rgba(14, 12, 20, 0) 34%),
    var(--c-ink);
}

.rail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand__glyph {
  position: relative;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, var(--c-violet), var(--c-cyan) 58%, var(--c-orange));
  clip-path: polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
}

.brand__glyph::after {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--c-ink);
  clip-path: polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
}

.brand__meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.brand__name {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.brand__sig {
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  color: var(--c-haze);
  overflow-wrap: anywhere;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  color: var(--c-paper);
  font-size: 12px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: border-color 160ms linear, color 160ms linear;
}

.nav-toggle:hover { border-color: var(--c-violet); color: var(--c-violet); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 200ms var(--ease);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.nav-toggle__text { white-space: nowrap; }

/* nav shell */
.site-nav { display: flex; flex-direction: column; gap: 14px; }

.site-nav__cap {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-haze);
}

.site-nav__list { display: flex; flex-direction: column; gap: 2px; }
.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 10px 12px 12px;
  border-left: 2px solid transparent;
  color: rgba(244, 240, 230, 0.70);
  text-decoration: none;
  transition:
    color 160ms linear,
    background 160ms linear,
    border-color 160ms linear,
    transform 160ms var(--ease);
}

.site-nav__link:hover {
  color: var(--c-paper);
  background: rgba(155, 92, 255, 0.10);
  border-left-color: var(--c-cyan);
  transform: translateX(3px);
}

.site-nav__link[aria-current="page"] {
  color: var(--c-paper);
  background: linear-gradient(90deg, rgba(155, 92, 255, 0.26), rgba(155, 92, 255, 0));
  border-left-color: var(--c-violet);
}

.site-nav__no {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.16em;
  font-variant-numeric: tabular-nums;
  color: var(--c-haze);
}

.site-nav__link[aria-current="page"] .site-nav__no { color: var(--c-cyan); }

.site-nav__label { font-size: 15.5px; line-height: 1.4; }

.site-nav__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 18px;
  margin-top: auto;
  border-top: 1px solid var(--line-soft);
}

/* pills */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  color: var(--c-paper);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: border-color 160ms linear, background 160ms linear, color 160ms linear;
}

.pill:hover { border-color: var(--c-cyan); color: var(--c-cyan); }

.pill--accent {
  border-color: var(--c-violet);
  background: rgba(155, 92, 255, 0.16);
}

.pill--accent:hover {
  background: var(--c-violet);
  border-color: var(--c-violet);
  color: #0E0C14;
}

/* rail foot */
.rail-foot { display: none; }

/* scrim */
.nav-scrim {
  position: fixed;
  inset: var(--bar-h) 0 0 0;
  z-index: 40;
  background: rgba(14, 12, 20, 0.72);
  opacity: 0;
  visibility: hidden;
  cursor: pointer;
  transition: opacity 240ms linear, visibility 240ms linear;
}

body[data-nav-open] .nav-scrim { opacity: 1; visibility: visible; }

/* ---------- 6. Header responsive ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    padding: 26px 20px 22px;
    border-right: 1px solid var(--line-soft);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .site-header::after {
    content: "";
    position: absolute;
    top: 0;
    right: -1px;
    width: 1px;
    height: 100%;
    background: linear-gradient(180deg, var(--c-violet), transparent 42%, var(--c-cyan), transparent 88%);
    opacity: 0.5;
  }

  .rail-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-toggle { display: none; }

  .site-nav { flex: 1; padding-top: 20px; }

  .nav-scrim { display: none; }

  .rail-foot {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 18px;
    border-top: 1px solid var(--line-soft);
  }

  .rail-foot__count {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-family: var(--f-display);
    font-weight: 900;
    font-size: 22px;
    letter-spacing: -0.02em;
  }

  .rail-foot__num { font-variant-numeric: tabular-nums; color: var(--c-paper); }
  .rail-foot__num--dim { font-size: 16px; color: var(--c-haze); }
  .rail-foot__slash { color: var(--c-violet); font-size: 15px; }

  .rail-foot__hint {
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--c-haze);
  }

  .rail-foot__track {
    display: block;
    height: 2px;
    margin-top: 4px;
    background: rgba(244, 240, 230, 0.12);
    overflow: hidden;
  }

  .rail-foot__fill {
    display: block;
    width: 100%;
    height: 100%;
    transform: scaleX(0);
    transform-origin: 0 50%;
    background: linear-gradient(90deg, var(--c-violet), var(--c-cyan));
  }
}

@media (max-width: 1023px) {
  html { scroll-padding-top: calc(var(--bar-h) + 16px); }

  body { padding-top: var(--bar-h); }
  body[data-nav-open] { overflow: hidden; }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--bar-h);
    display: flex;
    align-items: center;
    padding: 0 16px;
    background: rgba(14, 12, 20, 0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-soft);
  }

  .rail-head { width: 100%; }

  .brand__sig { display: none; }

  .site-nav {
    position: fixed;
    top: var(--bar-h);
    left: 0;
    bottom: 0;
    z-index: 70;
    width: min(86vw, 340px);
    padding: 22px 20px 34px;
    background:
      linear-gradient(180deg, rgba(155, 92, 255, 0.16) 0%, rgba(14, 12, 20, 0) 34%),
      #12101B;
    border-right: 1px solid var(--line-soft);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(-102%);
    visibility: hidden;
    transition: transform 260ms var(--ease), visibility 260ms var(--ease);
  }

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

/* ---------- 7. Layout helpers ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(244, 240, 230, 0.86);
}

.prose > * + * { margin-top: 1.15em; }

.prose h2 {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  margin-top: 1.9em;
}

.prose h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-paper);
  margin-top: 1.7em;
}

.prose ul { list-style: disc; padding-left: 1.3em; }
.prose ol { list-style: decimal; padding-left: 1.4em; }
.prose li + li { margin-top: 0.5em; }

.prose a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 211, 247, 0.4);
}

.prose a:hover { border-bottom-color: var(--c-cyan); }

.prose strong { color: var(--c-paper); font-weight: 700; }

.prose blockquote {
  border-left: 2px solid var(--c-clay);
  padding-left: 18px;
  color: rgba(244, 240, 230, 0.78);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-haze);
}

.crumbs > * { display: inline-flex; align-items: center; gap: 10px; }

.crumbs > * + *::before {
  content: "/";
  color: rgba(244, 240, 230, 0.28);
}

.crumbs a {
  color: var(--c-haze);
  text-decoration: none;
  transition: color 160ms linear;
}

.crumbs a:hover { color: var(--c-cyan); }
.crumbs [aria-current="page"] { color: var(--c-paper); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.eyebrow::before {
  content: "";
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
}

/* ---------- 8. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--c-paper);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  transition: background 160ms linear, border-color 160ms linear, color 160ms linear;
}

.btn:hover { border-color: var(--c-violet); background: rgba(155, 92, 255, 0.14); }

.btn--solid {
  background: var(--c-violet);
  border-color: var(--c-violet);
  color: #0E0C14;
  font-weight: 700;
}

.btn--solid:hover {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: #0E0C14;
}

.btn--cta {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: #0E0C14;
  font-weight: 700;
}

.btn--cta:hover { background: #FFA468; border-color: #FFA468; color: #0E0C14; }

.btn--ghost { color: rgba(244, 240, 230, 0.85); }
.btn--ghost:hover { color: var(--c-paper); }

/* ---------- 9. Grid ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 28px);
}

.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-11 { grid-column: span 11; }
.span-12 { grid-column: span 12; }

@media (max-width: 1023px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-1, .span-2, .span-3 { grid-column: span 3; }
  .span-4, .span-5, .span-6, .span-7,
  .span-8, .span-9, .span-10, .span-11, .span-12 { grid-column: 1 / -1; }
}

@media (max-width: 639px) {
  .grid--12 { grid-template-columns: 1fr; }
  [class*="span-"] { grid-column: 1 / -1; }
}

/* ---------- 10. Media container ---------- */
.media-box {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background:
    linear-gradient(148deg, rgba(155, 92, 255, 0.30), rgba(46, 211, 247, 0.16) 52%, rgba(255, 138, 61, 0.22)),
    repeating-linear-gradient(90deg, rgba(14, 12, 20, 0.55) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(0deg, rgba(14, 12, 20, 0.45) 0 1px, transparent 1px 34px),
    var(--c-graphite);
  color: var(--c-paper);
}

.media-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 12, 20, 0) 46%, rgba(14, 12, 20, 0.72));
  pointer-events: none;
}

.media-box::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-violet), var(--c-cyan) 48%, var(--c-orange));
}

.media-box > img,
.media-box > svg,
.media-box > picture,
.media-box > picture > img,
.media-box > .media-box__art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-box__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 14px 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(244, 240, 230, 0.82);
}

.media-box--tall { aspect-ratio: 3 / 4; }
.media-box--square { aspect-ratio: 1 / 1; }
.media-box--wide { aspect-ratio: 21 / 9; }

/* ---------- 11. Reveal ---------- */
.reveal { opacity: 1; transform: none; }

html.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 12. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 110px);
  border-top: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(155, 92, 255, 0.10) 0%, rgba(14, 12, 20, 0) 24%),
    var(--c-ink);
  color: rgba(244, 240, 230, 0.78);
  font-size: 15px;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(420px, 52%);
  height: 2px;
  background: linear-gradient(90deg, var(--c-violet), var(--c-cyan) 55%, transparent);
}

.foot-main {
  display: grid;
  grid-template-columns: minmax(200px, 1.1fr) minmax(0, 1.5fr) minmax(220px, 1fr);
  gap: clamp(26px, 3.6vw, 56px);
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(40px, 5vw, 80px) var(--gutter) clamp(30px, 3.5vw, 52px);
}

.foot-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.foot-brand__name {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.foot-brand__tag {
  max-width: 26ch;
  padding-left: 14px;
  border-left: 2px solid var(--c-clay);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 240, 230, 0.72);
}

.foot-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 2.4vw, 36px);
}

.foot-col__t {
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.foot-col__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.foot-col__list a {
  font-size: 14.5px;
  color: rgba(244, 240, 230, 0.72);
  text-decoration: none;
  transition: color 160ms linear, padding-left 160ms var(--ease);
}

.foot-col__list a:hover {
  color: var(--c-paper);
  padding-left: 5px;
}

.foot-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.foot-contact__list { display: grid; gap: 8px; }

.foot-contact__list dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-haze);
}

.foot-contact__list dd {
  margin-bottom: 4px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(244, 240, 230, 0.86);
  overflow-wrap: anywhere;
}

.foot-contact__note {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--c-haze);
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px var(--gutter) 34px;
  border-top: 1px solid var(--line-soft);
}

.foot-legal__line {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--c-haze);
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(244, 240, 230, 0.80);
  cursor: pointer;
  transition: border-color 160ms linear, color 160ms linear, background 160ms linear;
}

.to-top:hover {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  background: rgba(46, 211, 247, 0.08);
}

@media (max-width: 1023px) {
  .foot-main { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-contact { grid-column: 1 / -1; }
}

@media (max-width: 639px) {
  .foot-main { grid-template-columns: 1fr; }
  .foot-cols { grid-template-columns: 1fr 1fr; gap: 24px; }
  .foot-brand__tag { max-width: 32ch; }
}

/* ---------- 13. Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  body { animation: none; }

  html.js .reveal { opacity: 1; transform: none; }
}