/* ============================================================
   龙8玩家 · 共享样式 /assets/site.css
   深空黑基底 · 霓虹紫骨架 · 电光青数据 · 亮橙行动
   ============================================================ */

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

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58vw 58vw at 90% -12%, rgba(138, 92, 255, .15), transparent 62%),
    radial-gradient(46vw 46vw at 2% 34%, rgba(45, 226, 198, .07), transparent 62%);
}

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; }

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

h1, h2, h3, h4, h5, p, figure, blockquote { margin: 0; }

i, em { font-style: normal; }

hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

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

::selection { background: var(--violet); color: #ffffff; }

[id] { scroll-margin-top: 100px; }

/* ---------- tokens ---------- */
:root {
  --ink: #07060F;
  --ink-2: #12101F;
  --violet: #8A5CFF;
  --cyan: #2DE2C6;
  --orange: #FF7A2F;
  --paper: #F4F1EA;
  --muted: #A79FC4;
  --coral: #FF4D6D;
  --paper-warm: #EDE7DA;
  --line: #2A2740;

  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 2px;
  --head-h: 74px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow-lift: 0 18px 40px -24px rgba(7, 6, 15, .9);
}

/* ---------- 版式基础 ---------- */
.wrap,
.header-shell,
.footer-shell {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-main {
  display: block;
  padding-bottom: clamp(40px, 6vw, 80px);
}

.section {
  padding: clamp(40px, 6vw, 76px) 0;
  position: relative;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.section__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .3em;
  color: var(--violet);
  text-transform: uppercase;
}

.section__title {
  font-size: clamp(1.55rem, 3.2vw, 2.4rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.015em;
}

.section__lede {
  max-width: 62ch;
  color: var(--muted);
  font-size: 16.5px;
}

.prose { max-width: 68ch; }

.prose p + p { margin-top: 16px; }

.prose strong { color: #ffffff; font-weight: 700; }

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

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

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

.stack {
  display: grid;
  gap: clamp(12px, 1.6vw, 20px);
  align-content: start;
}

@media (min-width: 760px) {
  .grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 980px) {
  .grid--side { grid-template-columns: minmax(0, 3.4fr) minmax(0, 8.6fr); }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease), box-shadow .22s var(--ease),
              transform .22s var(--ease);
}

.btn--ghost {
  color: var(--paper);
  border-color: rgba(138, 92, 255, .55);
  background: linear-gradient(180deg, rgba(138, 92, 255, .16), rgba(138, 92, 255, .04));
}

.btn--ghost:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(45, 226, 198, .3), 0 10px 26px -14px rgba(45, 226, 198, .6);
}

.btn--solid {
  color: #1B0A00;
  background: var(--orange);
  border-color: var(--orange);
}

.btn--solid:hover {
  background: #FF8F52;
  box-shadow: 0 12px 30px -14px rgba(255, 122, 47, .8);
  transform: translateY(-1px);
}

.btn--outline {
  color: var(--paper);
  border-color: var(--line);
  background: rgba(255, 255, 255, .02);
}

.btn--outline:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.btn--quiet {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--muted);
  border-color: transparent;
}

.btn--quiet:hover { color: var(--paper); background: rgba(255, 255, 255, .05); }

.btn--sm { padding: 8px 13px; font-size: 13px; }

.btn--block { width: 100%; }

/* ---------- 面包屑 ---------- */
.breadcrumbs { padding-top: clamp(18px, 3vw, 28px); }

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.breadcrumbs__item { display: inline-flex; align-items: center; gap: 10px; }

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--line);
}

.breadcrumbs__link { color: var(--muted); transition: color .18s var(--ease); }

.breadcrumbs__link:hover { color: var(--cyan); }

.breadcrumbs__current { color: var(--paper); }

/* ---------- 卡片 / 面板 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.card:hover { border-color: rgba(138, 92, 255, .5); }

.card--layer { box-shadow: 5px 5px 0 0 rgba(237, 231, 218, .07); }

.card--paper {
  background: var(--paper-warm);
  color: #191527;
  border-color: #D6CEBD;
  box-shadow: 5px 5px 0 0 rgba(7, 6, 15, .45);
}

.card--paper .card__meta { color: #5C5470; }

.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel__label {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 9px;
  background: var(--paper-warm);
  color: #12101F;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .02);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  line-height: 1.5;
  white-space: nowrap;
}

.tag--violet { color: #D9CCFF; border-color: rgba(138, 92, 255, .5); background: rgba(138, 92, 255, .14); }
.tag--cyan { color: var(--cyan); border-color: rgba(45, 226, 198, .42); background: rgba(45, 226, 198, .1); }
.tag--orange { color: var(--orange); border-color: rgba(255, 122, 47, .48); background: rgba(255, 122, 47, .1); }
.tag--coral { color: var(--coral); border-color: rgba(255, 77, 109, .48); background: rgba(255, 77, 109, .1); }

/* ---------- 旁注 ---------- */
.anno {
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: .32em;
  color: var(--muted);
}

.anno--violet { color: var(--violet); }

.anno--inline {
  writing-mode: horizontal-tb;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  isolation: isolate;
}

.media__img,
.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 21 / 9; }

.media--empty {
  background-image: repeating-linear-gradient(135deg, rgba(138, 92, 255, .12) 0 10px, transparent 10px 20px);
}

.media__glow {
  position: absolute;
  right: -18%;
  bottom: -42%;
  width: 62%;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, rgba(138, 92, 255, .4), transparent 66%);
  filter: blur(4px);
  pointer-events: none;
}

.media__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 6, 15, 0) 34%, rgba(7, 6, 15, .88));
  pointer-events: none;
}

.media__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

.media__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--paper);
}

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 15px;
}

.table caption {
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--muted);
}

.table th,
.table td {
  padding: 12px 16px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.table thead th {
  background: rgba(138, 92, 255, .1);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
}

.table tbody tr:nth-child(even) { background: rgba(255, 255, 255, .015); }

.table__num {
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--paper);
}

/* ---------- 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .24s var(--ease), transform .24s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

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

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 120;
  padding: 12px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius);
  transition: top .18s var(--ease);
}

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

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7, 6, 15, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--cyan) 58%, var(--orange));
  opacity: .9;
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  transition: width .12s linear;
}

.header-shell {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  min-height: var(--head-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: var(--radius);
  background: linear-gradient(140deg, var(--cyan), var(--violet) 78%);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  box-shadow: 0 0 0 1px rgba(45, 226, 198, .45), 0 0 22px -6px rgba(138, 92, 255, .8);
}

.brand__meta {
  display: flex;
  flex-direction: column;
  line-height: 1.18;
}

.brand__name {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: .03em;
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}

.brand--footer .brand__mark { width: 46px; height: 46px; font-size: 21px; }

.brand--footer .brand__name { font-size: 19px; }

.header__anno { display: none; }

.header__tail {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.5vw, 20px);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 15px;
  color: var(--muted);
  transition: color .18s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease);
}

.site-nav__link:hover { color: var(--paper); }

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] {
  color: var(--paper);
  font-weight: 700;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

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

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars i {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.nav-toggle[aria-expanded="true"] { border-color: var(--cyan); color: var(--cyan); }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.header__cta { white-space: nowrap; }

@media (min-width: 1120px) {
  .header__anno {
    display: block;
    writing-mode: vertical-rl;
    margin-left: 2px;
    padding-left: 10px;
    border-left: 1px solid var(--line);
    font-size: 11px;
    letter-spacing: .34em;
    color: var(--muted);
  }
}

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 5;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    padding-inline: var(--gutter);
    background: var(--ink-2);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px -28px rgba(0, 0, 0, .9);
    transition: max-height .28s var(--ease), opacity .2s var(--ease), visibility .28s var(--ease);
  }

  .site-nav[data-open] {
    max-height: 420px;
    visibility: visible;
    opacity: 1;
    padding-top: 12px;
    padding-bottom: 18px;
  }

  .site-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .site-nav__link {
    display: block;
    padding: 12px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--ink);
    color: var(--paper);
    font-size: 15px;
  }

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

  .site-nav__link[aria-current="page"] {
    border-color: rgba(45, 226, 198, .55);
    color: var(--cyan);
    box-shadow: inset 3px 0 0 0 var(--cyan);
  }
}

@media (max-width: 640px) {
  .brand__line { display: none; }
  .brand__mark { width: 34px; height: 34px; font-size: 16px; }
  .brand__name { font-size: 15.5px; }
  .header__cta { padding: 9px 11px; font-size: 12.5px; letter-spacing: .02em; }
  .nav-toggle { padding: 8px 10px; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(340px, 42%);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.footer-shell {
  padding-top: clamp(40px, 6vw, 74px);
  padding-bottom: clamp(24px, 3vw, 38px);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

.footer-brand {
  display: grid;
  gap: 16px;
  align-content: start;
}

.footer-brand__note {
  max-width: 34ch;
  font-size: 14.5px;
  color: var(--muted);
}

.footer-brand__foot {
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.footer-brand__stamp {
  display: inline-block;
  padding: 5px 10px;
  background: var(--paper-warm);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  border-radius: var(--radius);
  transform: rotate(-1.2deg);
}

.footer-anno {
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--violet);
  opacity: .85;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: clamp(22px, 3vw, 34px);
}

.footer-col { display: grid; gap: 14px; align-content: start; }

.footer-col__title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--cyan);
}

.footer-col__list { display: grid; gap: 9px; }

.footer-col__link {
  display: inline-block;
  font-size: 15px;
  color: var(--paper);
  opacity: .85;
  transition: color .18s var(--ease), transform .18s var(--ease), opacity .18s var(--ease);
}

.footer-col__link:hover {
  color: var(--cyan);
  opacity: 1;
  transform: translateX(4px);
}

.footer-col__items { display: grid; gap: 14px; }

.footer-col__item {
  display: grid;
  gap: 2px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.footer-col__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.footer-col__sub { font-size: 12.5px; color: var(--muted); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px 28px;
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

.footer-note { font-size: 13px; color: var(--muted); }

@media (min-width: 900px) {
  .footer-top { grid-template-columns: minmax(250px, 3.2fr) minmax(0, 8.8fr); }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

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

  .scroll-progress__bar { transition: none; }
}