/* ==========================================================================
   艾乐牌局 · 共享样式 /assets/site.css
   墨绿 + 暗金铺底，霓虹青做状态光，珊瑚橙只留给行动
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #07130F;
  --green: #0E2B25;
  --deep: #14453A;
  --gold: #C9A227;
  --gold-soft: #F0D98C;
  --cyan: #35E0D0;
  --coral: #FF6B4A;
  --wine: #6E1F32;
  --purple: #2B2140;
  --paper: #F4F1E8;

  --line-gold: rgba(201, 162, 39, .38);
  --line-soft: rgba(240, 217, 140, .28);
  --line-hair: rgba(201, 162, 39, .18);

  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --radius: 6px;
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, .5);
  --shadow-soft: 4px 4px 0 rgba(0, 0, 0, .4);
  --wrap: 1180px;
  --gap: 20px;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- 2. 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-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: .01em;
}

h1, h2, h3, h4, h5, p, ul, ol, li, figure, dl, dt, dd, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

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

::selection { background: var(--gold); color: var(--ink); }

/* ---------- 3. 排版 ---------- */
.h1 {
  display: inline-block;
  font-size: clamp(30px, 8vw, 60px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.01em;
  transform: skewX(-2deg);
  transform-origin: left center;
}

.h2 {
  display: inline-block;
  font-size: clamp(24px, 5.6vw, 38px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.01em;
  transform: skewX(-2deg);
  transform-origin: left center;
}

.h3 {
  font-size: clamp(18px, 3.6vw, 22px);
  font-weight: 700;
  line-height: 1.4;
}

.lead {
  font-size: clamp(15px, 3.6vw, 17px);
  line-height: 1.8;
  opacity: .84;
  max-width: 42ch;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.muted { opacity: .7; }

.label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line-gold);
  border-radius: 2px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .05em;
  line-height: 1.6;
}

.label--cyan { border-color: var(--cyan); color: var(--cyan); }
.label--gold { border-color: var(--gold); color: var(--gold-soft); }
.label--coral { border-color: var(--coral); color: var(--coral); }

.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.link {
  color: var(--cyan);
  border-bottom: 1px solid rgba(53, 224, 208, .5);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.link:hover { color: var(--gold-soft); border-color: var(--gold-soft); }

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

/* ---------- 4. 布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  position: relative;
  padding: 56px 0;
}

.section--rule { border-top: 2px solid var(--gold); }
.section--ink { background: var(--ink); }
.section--deep { background: var(--deep); }
.section--wine { background: var(--wine); }
.section--purple { background: var(--purple); }

.section--paper {
  background: var(--paper);
  color: var(--green);
}

.section--paper .h1,
.section--paper .h2,
.section--paper .h3 { color: var(--ink); }

.section--paper .muted { color: rgba(14, 43, 37, .72); opacity: 1; }

.section--paper .label {
  border-color: rgba(14, 43, 37, .28);
  color: var(--green);
}

.section--paper .section-head__num {
  color: #7A5F0C;
  border-color: rgba(122, 95, 12, .35);
}

.section--paper .crumb a {
  color: #7A5F0C;
  border-color: rgba(122, 95, 12, .35);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: 28px;
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold);
  border: 1px solid var(--line-gold);
  border-radius: 2px;
  padding: 2px 8px;
}

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.stack > * + * { margin-top: 16px; }

.rule {
  height: 2px;
  border: 0;
  background: var(--gold);
  margin: 32px 0;
}

.crumb { padding: 14px 0 0; }

.crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.crumb li { display: flex; align-items: center; gap: 8px; }
.crumb li + li::before { content: "/"; color: var(--gold); }
.crumb a {
  color: var(--gold-soft);
  border-bottom: 1px solid var(--line-gold);
}
.crumb a:hover { color: var(--cyan); border-color: var(--cyan); }
.crumb [aria-current="page"] { color: var(--paper); opacity: .75; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: var(--deep);
  color: var(--paper);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .02em;
  box-shadow: var(--shadow-soft);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease),
              background-color .24s var(--ease), color .24s var(--ease);
}

.btn:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 rgba(0, 0, 0, .5); }
.btn:active { transform: translate(0, 0); box-shadow: 2px 2px 0 rgba(0, 0, 0, .5); }

.btn--coral {
  background: var(--coral);
  border-color: var(--coral);
  color: #20100A;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .45);
}

.btn--coral:hover { box-shadow: 9px 9px 0 rgba(0, 0, 0, .5); }

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

.btn--ghost:hover { background: rgba(240, 217, 140, .1); }

.btn--lg { padding: 18px 40px; font-size: 17px; }
.btn--block { width: 100%; }

/* ---------- 6. 卡片与媒体 ---------- */
.card {
  position: relative;
  padding: 20px;
  background: var(--deep);
  border: 2px solid var(--line-gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}

.section--paper .card {
  background: #FFFDF6;
  border-color: rgba(14, 43, 37, .22);
  box-shadow: 6px 6px 0 rgba(14, 43, 37, .14);
  color: var(--green);
}

.card__num {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 2px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.card__title {
  margin-top: 12px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
}

.card__text {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  opacity: .82;
}

.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 2px solid var(--line-gold);
  border-radius: var(--radius);
  background: linear-gradient(150deg, #0E2B25 0%, #07130F 58%, #2B2140 100%);
}

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

.media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .12;
  background-image: radial-gradient(rgba(0, 0, 0, .55) 1px, transparent 1px);
  background-size: 4px 4px;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 82% 92%, rgba(53, 224, 208, .26), rgba(53, 224, 208, 0) 58%),
    radial-gradient(circle at 10% 6%, rgba(255, 107, 74, .18), rgba(255, 107, 74, 0) 52%);
}

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

.media__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 4px 10px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  border-top-right-radius: var(--radius);
}

.figure { position: relative; margin: 0; }

.figure__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold-soft);
  opacity: .82;
}

/* ---------- 7. 显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .36s var(--ease), transform .36s var(--ease);
}

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

/* ---------- 8. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--green);
  border-bottom: 2px solid var(--gold);
  color: var(--paper);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink);
  font-weight: 700;
  border-radius: var(--radius);
  transition: top .2s var(--ease);
}

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

.header-top { border-bottom: 1px solid var(--line-gold); }

.header-top__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 14px;
  min-width: 0;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--paper);
}

.brand__mark::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: none;
  background: var(--gold);
  transform: rotate(45deg);
}

.brand__mark:hover { color: var(--gold-soft); }

.brand__line {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--gold-soft);
  opacity: .86;
  max-width: 36ch;
}

.status-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.status-tags li {
  padding: 3px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gold-soft);
  white-space: nowrap;
}

.status-tags--footer { margin-left: 0; margin-top: 16px; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: var(--deep);
  color: var(--paper);
  font-size: 14px;
  font-weight: 700;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .45);
}

.nav-toggle:hover { background: var(--gold); color: var(--ink); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--gold-soft);
  box-shadow: 0 -6px 0 var(--gold-soft), 0 6px 0 var(--gold-soft);
  transition: background-color .24s var(--ease), box-shadow .24s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars {
  background: var(--cyan);
  box-shadow: 0 -6px 0 var(--cyan), 0 6px 0 var(--cyan);
}

.header-bottom { position: relative; }

.nav-list { display: flex; width: 100%; }
.nav-list li { flex: 1 1 0; min-width: 0; }

.nav-list a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 15px 14px;
  border-left: 1px solid var(--line-hair);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  transition: background-color .24s var(--ease), color .24s var(--ease);
}

.nav-list li:first-child a { border-left: 0; }

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s var(--ease);
}

.nav-list a:hover { background: var(--deep); color: var(--gold-soft); }
.nav-list a:hover::after { transform: scaleX(1); }

.nav-list a[aria-current="page"] { background: var(--deep); color: var(--gold-soft); }
.nav-list a[aria-current="page"] .nav-num { color: var(--cyan); }
.nav-list a[aria-current="page"]::after { transform: scaleX(1); background: var(--gold); }

.nav-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold);
}

.nav-text {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.nav-quick { display: none; }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -2px;
  z-index: 2;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transition: width .12s linear;
}

/* ---------- 9. 页脚 ---------- */
.site-footer {
  background: var(--green);
  border-top: 2px solid var(--gold);
  color: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr;
  gap: 36px;
  padding-top: 52px;
  padding-bottom: 40px;
}

.footer-col { min-width: 0; }

.footer-mark {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.01em;
}

.footer-mark::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: none;
  background: var(--gold);
  transform: rotate(45deg);
}

.footer-note {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.75;
  opacity: .82;
}

.footer-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(244, 241, 232, .86);
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.footer-links a:hover { color: var(--cyan); border-color: var(--cyan); }

.footer-contact li {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(201, 162, 39, .28);
  font-size: 14px;
  line-height: 1.7;
}

.footer-contact__key {
  flex: none;
  min-width: 36px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-contact__val { word-break: break-word; }

.footer-contact__note {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  opacity: .74;
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding-top: 16px;
  padding-bottom: 18px;
  border-top: 1px solid var(--line-gold);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(244, 241, 232, .62);
}

/* ---------- 10. 反馈坞 ---------- */
.feedback-dock {
  position: sticky;
  bottom: 0;
  z-index: 40;
  background: var(--ink);
  border-top: 1px solid rgba(53, 224, 208, .35);
}

.feedback-dock__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.feedback-dock__hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan);
}

.feedback-dock__hint::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.feedback-toggle {
  margin-left: auto;
  padding: 7px 14px;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: var(--deep);
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.feedback-toggle:hover { background: var(--gold); color: var(--ink); }

.feedback-panel {
  max-height: 70vh;
  overflow-y: auto;
  padding: 16px 0 20px;
  background: var(--green);
  border-top: 1px solid rgba(53, 224, 208, .25);
}

.feedback-panel[hidden] { display: none; }

.feedback-panel__label {
  display: block;
  margin-bottom: 8px;
  font-size: 13.5px;
  color: var(--gold-soft);
}

.feedback-panel__input {
  display: block;
  width: 100%;
  min-height: 84px;
  padding: 12px 14px;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--line-gold);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.7;
  resize: vertical;
}

.feedback-panel__input::placeholder { color: rgba(244, 241, 232, .42); }

.feedback-panel__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
}

.feedback-panel__status {
  min-height: 1em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* ---------- 11. 响应式 ---------- */
@media (min-width: 1000px) {
  .split { grid-template-columns: 36fr 64fr; gap: 40px; }
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr; gap: 30px; }
  .footer-col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 880px) {
  .header-top__inner { flex-wrap: wrap; }
  .brand { order: 1; }
  .nav-toggle { display: inline-flex; order: 2; margin-left: auto; }
  .status-tags { order: 3; width: 100%; margin-left: 0; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 5;
    display: none;
    max-width: none;
    margin: 0;
    padding: 0;
    background: var(--green);
    border-bottom: 2px solid var(--gold);
    box-shadow: 0 12px 0 rgba(0, 0, 0, .38);
    max-height: calc(100vh - 150px);
    overflow-y: auto;
  }

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

  .nav-list { flex-direction: column; }
  .nav-list li { flex: 0 0 auto; }

  .nav-list a {
    padding: 14px 20px;
    border-left: 0;
    border-top: 1px solid var(--line-hair);
    font-size: 16px;
  }

  .nav-list li:first-child a { border-top: 0; }

  .nav-list a::after {
    left: 0;
    right: auto;
    top: 0;
    bottom: 0;
    width: 3px;
    height: auto;
    transform: scaleY(0);
    transform-origin: top center;
  }

  .nav-list a:hover::after,
  .nav-list a[aria-current="page"]::after { transform: scaleY(1); }

  .nav-text { white-space: normal; }

  .nav-quick {
    display: block;
    padding: 16px 20px 20px;
    background: var(--deep);
    border-top: 1px solid var(--line-gold);
  }

  .nav-quick__title {
    margin-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--gold);
  }

  .nav-quick__list { display: flex; flex-wrap: wrap; gap: 8px; }

  .nav-quick__list a {
    display: inline-block;
    padding: 8px 12px;
    border: 1px solid var(--line-soft);
    border-radius: 2px;
    font-size: 13px;
    font-weight: 700;
    color: var(--gold-soft);
  }

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

  .section { padding: 44px 0; }
}

@media (max-width: 760px) {
  body { font-size: 16px; line-height: 1.75; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-col:last-child { grid-column: auto; }
  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-head { margin-bottom: 22px; }
}

@media (max-width: 560px) {
  .brand__line { display: none; }
  .status-tags li { font-size: 10.5px; padding: 2px 7px; }
  .footer-links { gap: 8px 14px; }
  .footer-bar { font-size: 10.5px; }
  .feedback-dock__hint { font-size: 10px; }
  .btn { padding: 12px 20px; }
}

/* ---------- 12. 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;
  }

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

  .btn:hover,
  .btn:active { transform: none; }
}