/* ============================================================
   iching.css — Sixty-Four 共享设计系统
   设计 token / 自托管字体 / 暗色 / 纸纹 / 光标 / 页头·导航·页脚 /
   语言切换 / 主题与五行开关组件。index、卦典、卦页共用此文件。
   @font-face 用相对路径,请与 SweiMeatball.woff2 同目录。
   ============================================================ */
*, *::before, *::after{box-sizing: border-box; margin: 0; padding: 0;}
@font-face{font-family: 'Swei Meatball';
  src: url('SweiMeatball.woff2') format('woff2');
  font-weight: 400 700; font-style: normal; font-display: swap;
  unicode-range: U+3000-303F, U+4E00-9FFF, U+FF00-FFEF;}
:root{--paper:#faf7f2; --paper2:#f3eee5;
  --ink:#1f261a; --ink2:#3a4232; --ink3:#5a6150;
  --red2:#b91d1d;
  --wx-metal:#9b7831; --wx-wood:#577b2d; --wx-water:#326a86; --wx-fire:#b23834; --wx-earth:#915430;
  --border:rgba(31,38,26,0.12); --border-strong:rgba(31,38,26,0.22);
  --shadow:rgba(74,52,30,0.07); --shadow-strong:rgba(74,52,30,0.18);
  --s-1:8px; --s-2:16px; --s-3:24px; --s-4:32px; --s-5:48px; --s-6:64px; --s-7:96px; --s-8:128px;
  /* 设计系统排版:英文 Kalnia / 中文 狮尾肉丸优先 */
  --font-serif:'Kalnia','Swei Meatball','Noto Serif SC','Songti SC',serif;
  --font-sans:'Mulish','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Helvetica Neue','PingFang SC','Microsoft YaHei',sans-serif;
  --font-cjk:'Swei Meatball','Noto Serif SC','Songti SC',serif;
  --font-mono:'Mulish','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Helvetica Neue','PingFang SC','Microsoft YaHei',sans-serif;
  --text-display:56px; --text-headline:48px; --text-title:28px; --text-lead:18px; --text-body:15px; --text-caption:12px; --text-micro:10px;
  /* 动效 — 一条编辑式曲线,与设计系统统一 */
  --ease-editorial:cubic-bezier(0.22,0.61,0.36,1);
  --dur-fast:.15s; --dur-base:.25s; --dur-slow:.7s;}
@media (prefers-color-scheme: dark){
  :root:not([data-theme]){--paper:#0f130c; --paper2:#171c12;
    --ink:#e4e6da; --ink2:#bdbcaa; --ink3:#9a9a86;
    --red2:#d8543f;
    --wx-metal:#d3b069; --wx-wood:#97c167; --wx-water:#70aecd; --wx-fire:#da6a62; --wx-earth:#ca8f68;
    --border:rgba(232,230,216,0.12); --border-strong:rgba(232,230,216,0.22);
    --shadow:rgba(0,0,0,0.4); --shadow-strong:rgba(0,0,0,0.55);}
}
:root[data-theme="dark"]{--paper:#0f130c; --paper2:#171c12;
  --ink:#e4e6da; --ink2:#bdbcaa; --ink3:#9a9a86;
  --red2:#d8543f;
  --wx-metal:#d3b069; --wx-wood:#97c167; --wx-water:#70aecd; --wx-fire:#da6a62; --wx-earth:#ca8f68;
  --border:rgba(232,230,216,0.12); --border-strong:rgba(232,230,216,0.22);
  --shadow:rgba(0,0,0,0.4); --shadow-strong:rgba(0,0,0,0.55);}
html{scroll-behavior: smooth;}
body{font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;}
body::before{content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27320%27%20height%3D%27320%27%3E%3Cfilter%20id%3D%27n%27%3E%3CfeTurbulence%20type%3D%27fractalNoise%27%20baseFrequency%3D%271.6%27%20numOctaves%3D%273%27%20stitchTiles%3D%27stitch%27%20result%3D%27t%27%2F%3E%3CfeColorMatrix%20in%3D%27t%27%20type%3D%27saturate%27%20values%3D%270%27%2F%3E%3C%2Ffilter%3E%3Crect%20width%3D%27320%27%20height%3D%27320%27%20filter%3D%27url%28%23n%29%27%20opacity%3D%270.5%27%2F%3E%3C%2Fsvg%3E");
  opacity:0.035; mix-blend-mode:multiply;}
@media (prefers-color-scheme: dark){
  :root:not([data-theme]) body::before{mix-blend-mode:screen; opacity:0.06;}
}
:root[data-theme="dark"] body::before{mix-blend-mode:screen; opacity:0.06;}
html, body{cursor:auto;}
a,button,.nav-link,.quiet-btn,.lang-btn,.footer-mail,.gx-line{cursor:pointer;}
#attnDot{display:none;}
#attnDot i{display:block;box-sizing:border-box;width:28px;height:28px;margin:-14px 0 0 -14px;border-radius:50%;border:1.5px solid #fff;background:transparent;transition:width .25s,height .25s,margin .25s;}
#attnDot.breathing i{animation:attnBreathe 3.2s ease-in-out infinite;}
#attnDot.hot i{width:40px;height:40px;margin:-20px 0 0 -20px;animation:none;}
@keyframes attnBreathe{0%,100%{width:28px;height:28px;margin:-14px 0 0 -14px;}50%{width:32px;height:32px;margin:-16px 0 0 -16px;}}
@media (hover:none),(pointer:coarse){
  html,body{cursor:auto;}
  #attnDot{display:none;}
}
.wrap{max-width:1320px;margin:0 auto;padding:0 clamp(24px,5vw,72px) var(--s-7);}
.hd{padding:var(--s-5) 0 var(--s-4);
  border-bottom:1px solid var(--ink3);
  margin-bottom:0;
  position:relative; display:grid; grid-template-columns:minmax(0,1fr) minmax(0,auto);
  gap:var(--s-5); align-items:end; overflow:hidden;}
.hd::after{content:"易"; display:none; position:absolute; right:-0.12em; top:50%; transform:translateY(-54%);
  font-family:var(--font-cjk); font-size:clamp(150px,18vw,280px); line-height:0.8;
  color:var(--ink); opacity:0.04; pointer-events:none; z-index:0; user-select:none;}
.hd-left{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:var(--s-3);}
.brand-row{display:flex;align-items:center;gap:18px;}
.brand-logo{display:inline-flex;width:52px;height:52px;text-decoration:none;}
.brand-logo img{width:100%;height:100%;display:block;}
.logo-img-dark{display:none;}
@media (prefers-color-scheme: dark){
  :root:not([data-theme]) .logo-img-light{display:none;}
  :root:not([data-theme]) .logo-img-dark{display:block;}
}
:root[data-theme="dark"] .logo-img-light{display:none;}
:root[data-theme="dark"] .logo-img-dark{display:block;}
.brand-name{font-family:var(--font-serif);font-size:clamp(34px,4vw,46px);font-weight:500;letter-spacing:-0.02em;line-height:0.95;color:var(--ink);text-decoration:none;}
.brand-sub{font-family:var(--font-sans);font-size:var(--text-body);color:var(--ink3);max-width:38ch;}
.hd-right{position:relative;z-index:1;display:flex;align-items:center;gap:8px;padding-bottom:4px;}
.hd-sep{width:1px;height:22px;background:var(--border-strong);margin:0 4px;opacity:0.5;}
.site-nav{display:inline-flex;align-items:center;gap:var(--s-3);}
.nav-link{position:relative;color:var(--ink2);font-family:var(--font-sans);font-size:var(--text-body);font-weight:500;text-decoration:none;line-height:1;padding:6px 0;transition:color .18s;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:-2px;height:1.5px;background:var(--ink);transition:left .22s,right .22s;}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{left:0;right:0;}
.nav-link[aria-current]{color:var(--ink);font-weight:600;}
.nav-link[aria-current]::after{left:0;right:0;background:var(--red2);}
.quiet-controls{display:flex;align-items:center;gap:2px;}
.quiet-btn{background:transparent;border:none;color:var(--ink3);font-family:var(--font-mono);font-size:var(--text-micro);font-weight:500;letter-spacing:0.08em;text-transform:uppercase;padding:8px 10px;line-height:1;border-radius:999px;transition:color .15s,background .15s;display:inline-flex;align-items:center;justify-content:center;}
.quiet-btn:hover{color:var(--ink);background:var(--paper2);}
.lang-toggle{display:inline-flex;border:1px solid var(--ink3);border-radius:999px;overflow:hidden;}
.lang-btn.active{background:var(--ink);color:var(--paper);}
.wuxing-note{color:var(--ink3);}
.wuxing-note.wx-metal{color:var(--wx-metal);}
.wuxing-note.wx-wood{color:var(--wx-wood);}
.wuxing-note.wx-water{color:var(--wx-water);}
.wuxing-note.wx-fire{color:var(--wx-fire);}
.wuxing-note.wx-earth{color:var(--wx-earth);}
.brand-logo{align-items:center;justify-content:center;flex-shrink:0;color:var(--ink);transition:opacity .2s;}
.brand-logo:hover{opacity:0.75;}
.brand-logo .logo-img{width:100%;height:100%;display:block;object-fit:contain;}
.brand-logo .logo-img-dark{display:none;}
[data-theme="dark"] .brand-logo .logo-img-light{display:none;}
[data-theme="dark"] .brand-logo .logo-img-dark{display:block;}
@media (prefers-color-scheme:dark){
  :root:not([data-theme]) .brand-logo .logo-img-light{display:none;}
  :root:not([data-theme]) .brand-logo .logo-img-dark{display:block;}
}
.brand-name{margin:0;}
.quiet-divider{width:1px;height:14px;background:var(--border-strong);opacity:0.35;margin:0 2px;}
.lang-toggle{align-items:stretch;}
.lang-toggle .lang-btn{border:none;border-radius:0;padding:6px 12px;background:transparent;color:var(--ink3);transition:color .15s,background .15s;}
.lang-toggle .lang-btn + .lang-btn{border-left:1px solid var(--ink3);}
.lang-toggle .lang-btn.active,.lang-toggle .lang-btn.active:hover{background:var(--ink);color:var(--paper);font-weight:600;}
.lang-toggle .lang-btn:not(.active):hover{background:var(--paper2);color:var(--ink);}
.quiet-btn.theme-btn{padding:8px;color:var(--ink2);}
.quiet-btn.theme-btn:hover{color:var(--ink);}
.quiet-btn.theme-btn .icon-moon{display:none;}
.quiet-btn.theme-btn .icon-sun{display:inline-block;}
[data-theme="dark"] .quiet-btn.theme-btn .icon-sun{display:none;}
[data-theme="dark"] .quiet-btn.theme-btn .icon-moon{display:inline-block;}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .quiet-btn.theme-btn .icon-sun{display:none;}
  :root:not([data-theme="light"]) .quiet-btn.theme-btn .icon-moon{display:inline-block;}
}
footer{text-align:left;padding:42px 0 38px;margin-top:96px;border-top:1px solid var(--border);
  font-family:var(--font-sans);font-size:var(--text-caption);color:var(--ink3);line-height:1.7;
  display:flex;flex-direction:column;gap:28px;}
footer p{margin-bottom:0;}
.footer-main{display:flex;justify-content:space-between;align-items:center;gap:20px 24px;flex-wrap:wrap;}
.footer-left{max-width:440px;}
.footer-brand{font-family:var(--font-serif);font-size:var(--text-body);font-weight:500;color:var(--ink);letter-spacing:0.01em;margin:0;}
.footer-right{display:flex;align-items:center;gap:16px;}
.footer-social{display:flex;align-items:center;gap:14px;}
.footer-ig,.footer-medium{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;color:var(--ink2);transition:color .2s,transform .2s;}
.footer-ig:hover,.footer-medium:hover{color:var(--red2);transform:translateY(-1px);}
.footer-mail{font-family:var(--font-sans);font-size:var(--text-caption);color:var(--ink2);text-decoration:none;padding-bottom:2px;border-bottom:1px solid var(--ink3);transition:color .2s,border-color .2s;}
.footer-mail:hover{color:var(--red2);border-color:var(--red2);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:26px 24px;}
footer #footer-1{order:-1;flex:1 1 100%;max-width:56ch;margin:0;font-family:var(--font-serif);font-size:var(--text-caption);color:var(--ink3);line-height:1.6;}
.footer-copy{font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:0.18em;text-transform:uppercase;color:var(--ink3);margin:0 !important;}
@media (max-width:720px){
  .wrap{padding:0 24px 64px;}
  .hd{grid-template-columns:1fr;gap:20px;padding:48px 0 28px;}
  .hd::after{display:block;}
  .hd-right{justify-content:flex-start;flex-wrap:wrap;gap:14px;}
  .hd-sep{display:none;}
  .site-nav{flex-wrap:wrap;gap:18px;row-gap:14px;}
  .hd-right .quiet-controls{width:100%;margin-top:4px;}
  footer{gap:24px;margin-top:72px;}
  .footer-main{justify-content:space-between;gap:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:480px){
  .wrap{padding:0 20px 56px;}
  .brand-logo{width:36px;height:36px;}
  .brand-name{font-size:22px;}
}
[data-lang="zh"] .lang-en{display:none;}
[data-lang="en"] .lang-zh{display:none;}
.wx-switch{display:inline-flex;align-items:center;gap:7px;background:transparent;border:none;cursor:pointer;padding:4px 2px;font-family:var(--font-sans);font-size:var(--text-caption);}
.wx-switch .wx-label{color:var(--ink3);letter-spacing:0.04em;transition:color .15s ease;}
.wx-switch.active .wx-label{color:var(--ink2);}
.wx-toggle{position:relative;width:28px;height:16px;border-radius:8px;background:var(--border-strong);transition:background .2s ease;flex:0 0 auto;}
.wx-switch.active .wx-toggle{background:var(--ink2);}
.wx-thumb{position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;background:var(--paper);transition:transform .2s ease;}
.wx-switch.active .wx-thumb{transform:translateX(12px);}
.wx-info{position:relative;display:inline-flex;align-items:center;color:var(--ink3);cursor:help;transition:color .15s ease;}
.wx-info:hover,.wx-info:focus-visible{color:var(--ink);outline:none;}
.wx-info .wx-tip{position:absolute;top:calc(100% + 9px);right:-4px;width:250px;padding:11px 13px;background:var(--ink);color:var(--paper);font-family:var(--font-sans);font-size:var(--text-caption);font-weight:400;line-height:1.55;letter-spacing:0;text-transform:none;text-align:left;white-space:normal;border-radius:6px;box-shadow:0 6px 18px var(--shadow);opacity:0;visibility:hidden;transform:translateY(-3px);transition:opacity .15s ease,transform .15s ease,visibility .15s;z-index:60;pointer-events:none;}
.wx-info .wx-tip::after{content:"";position:absolute;top:-5px;right:8px;width:10px;height:10px;background:var(--ink);transform:rotate(45deg);}
.wx-info:hover .wx-tip,.wx-info:focus .wx-tip,.wx-info:focus-within .wx-tip{opacity:1;visibility:visible;transform:translateY(0);}

.footer-links{display:flex;gap:18px;flex-wrap:wrap;margin:0;}
.footer-links a{font-family:var(--font-sans);font-size:13px;color:var(--ink3);text-decoration:none;transition:color .2s;}
.footer-links a:hover{color:var(--ink);}

/* PWA install link */
.pwa-install-link{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-sans);font-size:13px;color:var(--ink3);text-decoration:none;cursor:pointer;transition:color .2s;}
.pwa-install-link:hover{color:var(--ink);}
.pwa-install-link svg{flex-shrink:0;}