/* ==========================================================================
   fruit-arcade-666.com.cn  |  共享外壳样式 /assets/site.css
   午夜街机厅：切角面板 + 霓虹描边 + 等宽仪表盘数字
   ========================================================================== */

/* 1. 变量 ---------------------------------------------------------------- */
:root {
  --ink: #0B0616;
  --ink-2: #171029;
  --ink-3: #1E1235;
  --paper: #F2F4FF;
  --mute: #B9BEDC;
  --green: #4CFFB0;
  --cherry: #FF3D6E;
  --mango: #FFC24B;
  --cyan: #2BE7F5;
  --magenta: #C64BFF;
  --edge: #3A2B5C;
  --edge-soft: rgba(58, 43, 92, 0.65);
  --mute-dim: rgba(185, 190, 220, 0.55);

  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "DejaVu Sans Mono", Consolas, "Courier New", monospace;

  --fs-1: 16px;
  --fs-2: 20px;
  --fs-3: 25px;
  --fs-4: 31px;
  --fs-5: 39px;
  --fs-6: 49px;
  --fs-7: 61px;
  --fs-8: 76px;
  --fs-9: 96px;

  --maxw: 1280px;
  --gutter: 24px;
  --radius-cut: 12px;

  --cut: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  --cut-sm: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  --cut-xs: polygon(5px 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%, 0 5px);
}

@media (max-width: 600px) {
  :root { --gutter: 16px; }
}

/* 2. Reset --------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

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

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

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

table { border-collapse: collapse; width: 100%; }

/* 3. 中文排版基准 --------------------------------------------------------- */
body {
  font-family: var(--font-body);
  font-size: var(--fs-1);
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    linear-gradient(115deg, rgba(198, 75, 255, 0.06) 0%, transparent 42%),
    linear-gradient(-25deg, rgba(43, 231, 245, 0.05) 0%, transparent 46%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

p { max-width: 68ch; }

strong { font-weight: 800; }

code, kbd, samp, .arc-mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.arc-h1 { font-size: clamp(39px, 6vw, var(--fs-8)); margin-bottom: 20px; }
.arc-h2 { font-size: clamp(31px, 4vw, var(--fs-6)); margin-bottom: 16px; }
.arc-h3 { font-size: clamp(25px, 2.6vw, var(--fs-4)); margin-bottom: 12px; }

.arc-lead {
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--mute);
  max-width: 62ch;
}

.arc-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}

.arc-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--cyan));
}

/* 4. 焦点与可访问性 ------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
}

.arc-skip {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  display: inline-block;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  background: var(--green);
  clip-path: var(--cut-sm);
  transition: top 0.18s ease;
}

.arc-skip:focus { top: 12px; }

/* 5. 容器与栅格 ---------------------------------------------------------- */
.arc-shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.arc-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.arc-col-3 { grid-column: span 3; }
.arc-col-4 { grid-column: span 4; }
.arc-col-5 { grid-column: span 5; }
.arc-col-6 { grid-column: span 6; }
.arc-col-7 { grid-column: span 7; }
.arc-col-8 { grid-column: span 8; }
.arc-col-12 { grid-column: span 12; }

@media (max-width: 860px) {
  .arc-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 16px;
  }
  .arc-col-3, .arc-col-4, .arc-col-5, .arc-col-6, .arc-col-7, .arc-col-8 {
    grid-column: span 6;
  }
}

/* 6. 切角面板 ------------------------------------------------------------ */
.arc-panel {
  position: relative;
  padding: 24px;
  background: var(--ink-2);
  border: 1px solid var(--edge);
  clip-path: var(--cut);
}

.arc-panel--flush { padding: 0; }

.arc-panel__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--edge-soft);
}

.arc-panel__id {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mango);
  font-variant-numeric: tabular-nums;
}

.arc-panel__title {
  font-size: var(--fs-3);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.arc-panel__body { color: var(--mute); }
.arc-panel__body p + p { margin-top: 12px; }

.arc-panel__foot {
  height: 2px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--green), var(--cyan), transparent);
}

.arc-panel__foot--warn { background: linear-gradient(90deg, var(--cherry), var(--magenta), transparent); }
.arc-panel__foot--stamp { background: linear-gradient(90deg, var(--mango), var(--green), transparent); }

/* 7. 图片容器 ------------------------------------------------------------ */
.arc-media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(140deg, var(--ink-2) 0%, var(--ink-3) 100%);
  clip-path: var(--cut);
  border: 1px solid var(--edge);
}

.arc-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.arc-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(242, 244, 255, 0.045) 0 1px,
    transparent 1px 4px
  );
}

.arc-media--wide { aspect-ratio: 21 / 9; }
.arc-media--square { aspect-ratio: 1 / 1; }
.arc-media--tall { aspect-ratio: 4 / 5; }

.arc-media__label {
  position: absolute;
  inset: auto 0 0 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mute);
  background: linear-gradient(0deg, rgba(11, 6, 22, 0.9), transparent);
}

/* 8. 标签与状态 ---------------------------------------------------------- */
.arc-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  background: rgba(43, 231, 245, 0.09);
  border: 1px solid rgba(43, 231, 245, 0.34);
  clip-path: var(--cut-xs);
  white-space: nowrap;
}

.arc-chip--plain {
  color: var(--mute);
  background: rgba(185, 190, 220, 0.08);
  border-color: var(--edge);
}

.arc-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mute);
  white-space: nowrap;
}

.arc-state::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--mute-dim);
  clip-path: var(--cut-xs);
}

.arc-state--doing { color: var(--green); }
.arc-state--doing::before { background: var(--green); }

.arc-state--done { color: var(--mango); }
.arc-state--done::before { background: var(--mango); }

.arc-state--limited { color: var(--cherry); }
.arc-state--limited::before { background: var(--cherry); }

/* 9. 按钮 ---------------------------------------------------------------- */
.arc-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  clip-path: var(--cut-sm);
  transition: transform 0.18s ease, filter 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.arc-btn--primary {
  color: #07040F;
  background: linear-gradient(120deg, var(--green) 0%, var(--cyan) 100%);
}

.arc-btn--primary:hover {
  filter: drop-shadow(0 0 12px rgba(76, 255, 176, 0.5));
  transform: translateY(-1px);
}

.arc-btn--ghost {
  color: var(--paper);
  background: rgba(242, 244, 255, 0.04);
  box-shadow: inset 0 0 0 1px var(--edge);
}

.arc-btn--ghost:hover {
  color: var(--cyan);
  background: rgba(43, 231, 245, 0.1);
  box-shadow: inset 0 0 0 1px rgba(43, 231, 245, 0.45);
  transform: translateY(-1px);
}

.arc-btn--sm { padding: 9px 16px; font-size: 14px; }

.arc-btn__arrow {
  font-family: var(--font-mono);
  transition: transform 0.18s ease;
}

.arc-btn:hover .arc-btn__arrow { transform: translateX(4px); }

/* 10. 面包屑 -------------------------------------------------------------- */
.arc-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mute);
  margin-bottom: 28px;
}

.arc-crumbs__sep { color: var(--mute-dim); }

.arc-crumbs a { transition: color 0.18s ease; }
.arc-crumbs a:hover { color: var(--cyan); }

/* 11. 页头 --------------------------------------------------------------- */
.arc-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(11, 6, 22, 0.97) 0%, rgba(11, 6, 22, 0.86) 100%);
  border-bottom: 1px solid var(--edge);
  backdrop-filter: blur(10px);
}

.arc-header__inner {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 12px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  min-height: 72px;
  transition: min-height 0.22s ease, padding 0.22s ease;
}

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

.arc-brand__mark {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
  width: 26px;
  height: 26px;
  flex: none;
}

.arc-brand__mark i {
  display: block;
  background: var(--green);
  clip-path: var(--cut-xs);
}

.arc-brand__mark i:nth-child(2) { background: var(--cherry); }
.arc-brand__mark i:nth-child(3) { background: var(--mango); }
.arc-brand__mark i:nth-child(4) { background: var(--cyan); }

.arc-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.arc-brand__name {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.arc-brand__tag {
  font-size: 13px;
  color: var(--mute);
  letter-spacing: 0.02em;
  transition: opacity 0.18s ease;
}

.arc-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
  background: rgba(242, 244, 255, 0.04);
  box-shadow: inset 0 0 0 1px var(--edge);
  clip-path: var(--cut-sm);
}

.arc-navtoggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}

.arc-navtoggle__bars i {
  display: block;
  height: 2px;
  background: var(--green);
  transition: opacity 0.16s ease;
}

.arc-navtoggle[aria-expanded="true"] .arc-navtoggle__bars i:nth-child(2) { opacity: 0; }

.arc-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
}

.arc-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.arc-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 10px 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--mute);
  transition: color 0.18s ease, background-color 0.18s ease;
}

.arc-nav__link::before {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 4px;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease;
}

.arc-nav__link:hover {
  color: var(--paper);
  background: rgba(43, 231, 245, 0.08);
}

.arc-nav__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mute-dim);
  font-variant-numeric: tabular-nums;
}

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

.arc-nav__link[aria-current="page"]::before { transform: scaleX(1); }

.arc-nav__link[aria-current="page"] .arc-nav__idx { color: var(--green); }

.arc-nav__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-left: 22px;
  border-left: 1px solid var(--edge-soft);
}

.arc-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mango);
  white-space: nowrap;
  max-width: none;
}

.arc-status__dot {
  width: 8px;
  height: 8px;
  background: var(--mango);
  clip-path: var(--cut-xs);
  animation: arc-breath 2.5s ease-in-out infinite;
}

@keyframes arc-breath {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

.arc-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--green), var(--cyan), var(--magenta));
  pointer-events: none;
}

/* 页头收拢态（桌面端） */
@media (min-width: 901px) {
  .arc-header.is-condensed .arc-header__inner {
    min-height: 48px;
    padding-block: 5px;
  }

  .arc-header.is-condensed .arc-brand__tag { display: none; }

  .arc-header.is-condensed .arc-nav__list { display: none; }
}

/* 12. 移动端命令栏 ------------------------------------------------------- */
@media (max-width: 900px) {
  .arc-header__inner { gap: 12px; }

  .arc-navtoggle { display: inline-flex; }

  .arc-nav {
    order: 3;
    flex-basis: 100%;
    display: block;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    border-top: 1px solid transparent;
    transition: max-height 0.3s ease, opacity 0.2s ease, padding 0.2s ease;
  }

  .arc-nav[data-open] {
    max-height: 82vh;
    opacity: 1;
    padding-block: 12px 18px;
    border-top-color: var(--edge-soft);
  }

  .arc-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .arc-nav__link {
    justify-content: flex-start;
    padding: 12px 12px;
    font-size: 16px;
    background: rgba(242, 244, 255, 0.03);
  }

  .arc-nav__link::before { left: 0; right: auto; width: 3px; height: 100%; top: 0; bottom: 0; transform: scaleY(0); transform-origin: top center; }

  .arc-nav__link[aria-current="page"]::before { transform: scaleY(1); }

  .arc-nav__meta {
    flex-wrap: wrap;
    gap: 12px;
    padding: 16px 0 0;
    border-left: 0;
    border-top: 1px solid var(--edge-soft);
    margin-top: 12px;
  }

  .arc-nav__meta .arc-btn { flex: 1 1 auto; justify-content: center; }
}

/* 13. 页脚 --------------------------------------------------------------- */
.arc-footer {
  position: relative;
  margin-top: 96px;
  background: var(--ink-2);
  border-top: 1px solid var(--edge);
}

.arc-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), var(--cyan), var(--magenta), var(--cherry), var(--mango));
}

.arc-footer__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 56px var(--gutter) 30px;
}

.arc-footer__top {
  display: grid;
  grid-template-columns: minmax(240px, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--edge-soft);
}

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

.arc-footer__mark {
  display: grid;
  grid-template-columns: repeat(4, 10px);
  gap: 3px;
  margin-bottom: 14px;
}

.arc-footer__mark i {
  display: block;
  height: 10px;
  background: var(--green);
  clip-path: var(--cut-xs);
}

.arc-footer__mark i:nth-child(2) { background: var(--cherry); }
.arc-footer__mark i:nth-child(3) { background: var(--mango); }
.arc-footer__mark i:nth-child(4) { background: var(--cyan); }

.arc-footer__brandline {
  font-size: var(--fs-2);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 20ch;
}

.arc-footer__closing {
  margin-top: 10px;
  font-size: 15px;
  color: var(--mango);
  max-width: 24ch;
}

.arc-footer__small {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mute);
  max-width: none;
}

.arc-footer__heading {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.arc-footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arc-footer__link {
  display: inline-block;
  font-size: 15px;
  color: var(--mute);
  transition: color 0.18s ease, transform 0.18s ease;
}

.arc-footer__link:hover {
  color: var(--green);
  transform: translateX(3px);
}

.arc-footer__contact {
  margin-top: 32px;
  padding: 22px 24px;
  background: rgba(11, 6, 22, 0.72);
  border: 1px solid var(--edge);
  clip-path: var(--cut);
}

.arc-footer__contactgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px 28px;
}

.arc-footer__contactgrid p {
  font-size: 15px;
  color: var(--paper);
  max-width: none;
  word-break: break-word;
}

.arc-footer__k {
  display: inline-block;
  min-width: 68px;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.arc-footer__note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--edge-soft);
  font-size: 14px;
  color: var(--mute);
  max-width: none;
}

.arc-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mute);
}

.arc-footer__icp { color: var(--mute); }

.arc-footer__copy { margin-left: auto; color: var(--mute-dim); }

@media (max-width: 980px) {
  .arc-footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .arc-footer { margin-top: 64px; }
  .arc-footer__inner { padding-top: 40px; }
  .arc-footer__top { grid-template-columns: 1fr; gap: 28px; }
  .arc-footer__contact { padding: 18px 16px; }
  .arc-footer__k { min-width: 0; display: block; margin: 0 0 2px; }
  .arc-footer__copy { margin-left: 0; }
}

/* 14. 显现动效 ----------------------------------------------------------- */
.arc-anim [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.arc-anim [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* 15. 降级与偏好 --------------------------------------------------------- */
@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;
  }

  .arc-anim [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .arc-status__dot { animation: none; opacity: 1; }
}

@media print {
  .arc-header,
  .arc-footer,
  .arc-progress { display: none; }
}