/* ==========================================================================
   喜乐娱乐 XI LE · 棋谱局 QIPU ATELIER
   --------------------------------------------------------------------------
   qipu-base.css  设计令牌 / 排版 / 外壳（页头 · 页脚 · 按钮 · 印章）
   视觉系统：宣纸底 + 细墨格 + 朱砂印 + 棋盘线，全书体排印
   ========================================================================== */

/* ---------- 令牌 ---------- */
:root {
  --xi-paper: #f4ede1;
  --xi-paper-2: #ece2d1;
  --xi-paper-3: #e3d6c1;
  --xi-ink: #1c1a16;
  --xi-ink-2: #3d3931;
  --xi-ink-3: #6f6757;
  --xi-cinnabar: #b23a2f;
  --xi-cinnabar-2: #8c2a21;
  --xi-bamboo: #3f6b52;
  --xi-bamboo-2: #2b4b3a;
  --xi-gold: #b98f43;
  --xi-line: rgba(28, 26, 22, .16);
  --xi-line-2: rgba(28, 26, 22, .08);
  --xi-shadow: 0 26px 50px -34px rgba(28, 26, 22, .6);
  --xi-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "STSong", SimSun, serif;
  --xi-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --xi-wrap: 1180px;
  --q-ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--xi-sans);
  font-size: 16px;
  line-height: 1.78;
  color: var(--xi-ink);
  background-color: var(--xi-paper);
  -webkit-font-smoothing: antialiased;
}
/* 细墨格：像一张未落子的棋盘纸 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(28, 26, 22, .032) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(28, 26, 22, .026) 0 1px, transparent 1px 48px);
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 {
  margin: 0 0 .6em;
  font-family: var(--xi-serif);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: .012em;
}
h1 { font-size: clamp(1.9rem, 3.6vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.5vw, 2.05rem); }
h3 { font-size: clamp(1.1rem, 1.5vw, 1.24rem); }
:focus-visible { outline: 2px solid var(--xi-cinnabar); outline-offset: 3px; }

/* ---------- 版心 ---------- */
.q-wrap { width: 100%; max-width: var(--xi-wrap); margin: 0 auto; padding: 0 24px; }
.q-main { position: relative; z-index: 1; }
.q-sec { padding: 84px 0; }
.q-sec--tight { padding: 56px 0; }
.q-sec--paper2 { background: linear-gradient(180deg, rgba(236, 226, 209, .72), rgba(236, 226, 209, .34)); border-block: 1px solid var(--xi-line-2); }
.q-sec--ink { background: #191713; color: #ece3d1; }
.q-sec--ink h2, .q-sec--ink h3 { color: #f6efdf; }

.q-skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--xi-ink); color: #fff; padding: 10px 18px;
}
.q-skip:focus { left: 12px; top: 12px; }

/* ---------- 标题组 ---------- */
.q-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--xi-serif);
  font-size: .8rem; letter-spacing: .28em; color: var(--xi-cinnabar);
  margin-bottom: 14px;
}
.q-kicker::before {
  content: ""; width: 26px; height: 1px; background: currentColor; opacity: .7;
}
.q-title { margin-bottom: 14px; }
.q-title em { font-style: normal; color: var(--xi-cinnabar); }
.q-lede { max-width: 60ch; color: var(--xi-ink-2); font-size: 1.02rem; }
.q-rule { height: 1px; border: 0; margin: 0; background: linear-gradient(90deg, var(--xi-ink), rgba(28, 26, 22, 0)); opacity: .35; }

/* ---------- 印章 ---------- */
.q-seal {
  display: inline-grid; place-items: center;
  width: 46px; height: 46px;
  background: var(--xi-cinnabar);
  color: #fdf6ea;
  font-family: var(--xi-serif);
  font-size: .84rem; line-height: 1.06; letter-spacing: .04em;
  text-align: center;
  border-radius: 3px;
  box-shadow: inset 0 0 0 2px rgba(253, 246, 234, .45), 0 4px 12px -6px rgba(140, 42, 33, .9);
  transform: rotate(-2deg);
}
.q-seal--sm { width: 34px; height: 34px; font-size: .66rem; }

/* ---------- 页头 ---------- */
.q-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 237, 225, .94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--xi-line);
}
.q-ruler {
  height: 22px;
  border-bottom: 1px solid var(--xi-line-2);
  background-image:
    repeating-linear-gradient(90deg, rgba(28, 26, 22, .3) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(28, 26, 22, .55) 0 1px, transparent 1px 120px);
  background-size: 100% 7px, 100% 12px;
  background-position: bottom left, bottom left;
  background-repeat: repeat-x;
}
.q-head__bar {
  display: flex; align-items: center; gap: 26px;
  height: 76px;
}
.q-brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.q-brand__meta { display: flex; flex-direction: column; line-height: 1.2; }
.q-brand__meta strong {
  font-family: var(--xi-serif); font-size: 1.16rem; font-weight: 600; letter-spacing: .1em;
}
.q-brand__meta em {
  font-style: normal; font-size: .62rem; letter-spacing: .3em;
  color: var(--xi-ink-3); text-transform: uppercase;
}

.q-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.q-nav a {
  position: relative; display: inline-flex; align-items: baseline; gap: 5px;
  padding: 8px 12px; font-size: .95rem; color: var(--xi-ink-2);
  transition: color .22s var(--q-ease);
}
.q-nav a i {
  font-style: normal; font-family: var(--xi-serif);
  font-size: .62rem; color: var(--xi-ink-3); opacity: .8;
}
.q-nav a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px;
  height: 2px; background: var(--xi-cinnabar);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--q-ease);
}
.q-nav a:hover { color: var(--xi-ink); }
.q-nav a:hover::after { transform: scaleX(1); }
.q-nav a[aria-current="page"] { color: var(--xi-cinnabar); }
.q-nav a[aria-current="page"]::after { transform: scaleX(1); }
.q-nav a[aria-current="page"] i { color: var(--xi-cinnabar); }

.q-head__act { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

/* ---------- 按钮 ---------- */
.q-btn {
  --btn-bg: var(--xi-ink); --btn-fg: #f7f1e4; --btn-line: var(--xi-ink);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px;
  font-size: .92rem; letter-spacing: .04em;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1px solid var(--btn-line); border-radius: 2px;
  cursor: pointer;
  transition: transform .2s var(--q-ease), box-shadow .25s var(--q-ease), background .2s, color .2s;
}
.q-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 22px -16px rgba(28, 26, 22, .8); }
.q-btn--ghost { --btn-bg: transparent; --btn-fg: var(--xi-ink); --btn-line: rgba(28, 26, 22, .45); }
.q-btn--ghost:hover { --btn-bg: rgba(28, 26, 22, .05); }
.q-btn--seal { --btn-bg: var(--xi-cinnabar); --btn-fg: #fdf6ea; --btn-line: var(--xi-cinnabar-2); }
.q-btn--seal:hover { --btn-bg: var(--xi-cinnabar-2); }
.q-btn--sm { padding: 8px 14px; font-size: .84rem; }
.q-btn__arr { font-family: var(--xi-serif); }

.q-burger {
  display: none; width: 42px; height: 42px;
  background: transparent; border: 1px solid rgba(28, 26, 22, .35); border-radius: 2px;
  cursor: pointer; padding: 0; place-items: center;
}
.q-burger span { display: block; width: 18px; height: 1px; background: var(--xi-ink); margin: 3px auto; transition: transform .25s var(--q-ease), opacity .2s; }
.q-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.q-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.q-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

/* ---------- 页脚 ---------- */
.q-foot {
  position: relative; z-index: 1;
  background: #191713; color: #d9cfba;
  padding: 62px 0 26px;
  border-top: 3px double rgba(244, 237, 225, .22);
}
.q-foot__grid {
  display: grid; grid-template-columns: 1.5fr .8fr .8fr 1fr;
  gap: 40px 32px;
}
.q-foot__brand .q-seal { margin-bottom: 16px; }
.q-foot__brand p { color: #a99f8a; font-size: .9rem; max-width: 34ch; }
.q-foot__brand strong { display: block; font-family: var(--xi-serif); font-size: 1.1rem; color: #f3ead6; letter-spacing: .14em; margin-bottom: 6px; }
.q-foot h4 {
  font-family: var(--xi-serif); font-size: .82rem; letter-spacing: .22em;
  color: #f3ead6; margin-bottom: 14px;
}
.q-foot ul { display: grid; gap: 8px; }
.q-foot li a { font-size: .88rem; color: #a99f8a; transition: color .2s; }
.q-foot li a:hover { color: var(--xi-gold); }
.q-foot__legal {
  margin-top: 46px; padding-top: 20px;
  border-top: 1px solid rgba(244, 237, 225, .16);
  font-size: .78rem; color: #8d8470; line-height: 1.9;
}
.q-foot__legal p { margin: 0 0 4px; }
.q-foot__legal strong { color: #bfae8d; font-weight: 500; }
.q-foot__badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; }
.q-foot__badges span {
  display: inline-block; padding: 3px 9px;
  border: 1px solid rgba(244, 237, 225, .26); border-radius: 2px;
  font-size: .72rem; letter-spacing: .08em; color: #b6ab94;
}

/* ---------- 通用小件 ---------- */
.q-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.q-tags span {
  padding: 4px 10px; border: 1px solid var(--xi-line);
  font-size: .78rem; color: var(--xi-ink-2); border-radius: 2px;
}
.q-num { font-family: var(--xi-serif); font-variant-numeric: tabular-nums; }

/* ---------- 揭示动画 ---------- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--q-ease), transform .7s var(--q-ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .q-nav a { padding: 8px 9px; font-size: .88rem; }
  .q-nav a i { display: none; }
  .q-head__act .q-btn--ghost { display: none; }
}
@media (max-width: 900px) {
  .q-head__bar { height: 66px; gap: 14px; }
  .q-burger { display: grid; }
  .q-nav {
    position: fixed; inset: 88px 0 auto; z-index: 49;
    display: grid; gap: 0; margin: 0;
    padding: 8px 24px 22px;
    background: var(--xi-paper);
    border-bottom: 1px solid var(--xi-line);
    box-shadow: 0 24px 40px -30px rgba(28, 26, 22, .8);
    transform: translateY(-140%);
    transition: transform .38s var(--q-ease);
  }
  .q-nav.is-open { transform: none; }
  .q-nav a { padding: 13px 0; border-bottom: 1px solid var(--xi-line-2); font-size: 1rem; }
  .q-nav a i { display: inline; }
  .q-nav a::after { display: none; }
  .q-foot__grid { grid-template-columns: 1fr 1fr; }
  .q-sec { padding: 60px 0; }
}
@media (max-width: 560px) {
  .q-wrap { padding: 0 18px; }
  .q-brand__meta em { display: none; }
  .q-seal { width: 40px; height: 40px; font-size: .74rem; }
  .q-foot__grid { grid-template-columns: 1fr; gap: 28px; }
  .q-head__act .q-btn { padding: 9px 13px; font-size: .84rem; }
}