/* 树下微醺 · 音乐榜 */
:root{
  --ink:#0c0f0d;
  --ink-2:#121612;
  --ink-3:#191d18;
  --paper:#f3ecde;
  --paper-2:#e8dfcd;
  --mute:#9c9384;
  --mute-2:#6f685c;
  --amber:#d9a45f;
  --amber-soft:rgba(217,164,95,.16);
  --wine:#7c2b34;
  --line:rgba(243,236,222,.11);
  --line-2:rgba(243,236,222,.06);
  --sans:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-weight:300;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.03em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(217,164,95,.20), transparent 62%),
    radial-gradient(680px 420px at 6% 2%, rgba(124,43,52,.20), transparent 60%),
    radial-gradient(1200px 700px at 50% 108%, rgba(217,164,95,.07), transparent 65%);
}
.grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.16;mix-blend-mode:soft-light;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/></filter><rect width='140' height='140' filter='url(%23n)' opacity='.55'/></svg>");
}
main,header,footer{position:relative;z-index:2}
main{max-width:680px;margin:0 auto;padding:0 22px 96px}
a{color:inherit}

/* ---------- hero ---------- */
.hero{max-width:680px;margin:0 auto;padding:0 0 30px;position:relative}
.cover{
  position:relative;width:100vw;left:50%;transform:translateX(-50%);
  height:min(68vh,500px);overflow:hidden;background:#0a0d0b;
}
.cover img{
  width:100%;height:100%;object-fit:cover;object-position:center 38%;display:block;
  filter:saturate(1.02) contrast(1.03);
}
.cover::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(12,15,13,.38) 0%,rgba(12,15,13,.04) 26%,
             rgba(12,15,13,.20) 50%,rgba(12,15,13,.56) 68%,rgba(12,15,13,.88) 84%,
             var(--ink) 96%,var(--ink) 100%);
}
.cover-in{position:absolute;left:0;right:0;bottom:0;padding:0 24px 34px;z-index:2;max-width:680px;margin:0 auto}
.cover-in::before{
  content:"";position:absolute;left:-24px;right:-24px;bottom:-34px;height:210px;z-index:-1;
  background:radial-gradient(120% 100% at 30% 100%,rgba(8,11,9,.72) 0%,rgba(8,11,9,.42) 45%,rgba(8,11,9,0) 78%);
  pointer-events:none;
}
.hero-body{padding:26px 22px 0}
h1{
  margin:0 0 18px;font-weight:300;font-size:clamp(31px,9.4vw,47px);
  line-height:1.12;letter-spacing:.1em;text-shadow:0 2px 30px rgba(0,0,0,.35);
}
h1 .dot{color:var(--amber);margin:0 .14em;font-weight:300}
.subtitle{
  margin:0;font-size:12.5px;letter-spacing:.44em;color:#e6c48f;
  font-weight:300;text-indent:.44em;text-shadow:0 1px 12px rgba(0,0,0,.5);
}
.scroll-cue{
  position:absolute;left:50%;transform:translateX(-50%);bottom:10px;z-index:3;
  width:1px;height:22px;background:linear-gradient(to bottom,rgba(243,236,222,.55),transparent);
  animation:cue 2.4s ease-in-out infinite;
}
@keyframes cue{0%,100%{opacity:.35;transform:translateX(-50%) translateY(-2px)}50%{opacity:.9;transform:translateX(-50%) translateY(2px)}}
.meta{
  display:flex;align-items:center;gap:10px;margin:0 0 16px;
  font-size:11.5px;letter-spacing:.2em;color:var(--mute-2);
}
.meta i{width:22px;height:1px;background:rgba(217,164,95,.5);display:inline-block}
.lede{margin:0;color:var(--mute);font-size:15px;line-height:1.9;letter-spacing:.05em}
.stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  margin:38px 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats>div{padding:18px 0 16px;text-align:left}
.stats>div+div{padding-left:18px;border-left:1px solid var(--line-2)}
.stats b{
  display:block;font-weight:200;font-size:27px;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;color:var(--paper);
}
.stats span{display:block;font-size:11px;color:var(--mute-2);letter-spacing:.16em;margin-top:4px}

/* ---------- sections ---------- */
section{margin-top:56px}
.sec-title{
  margin:0;font-size:15px;font-weight:400;letter-spacing:.24em;color:var(--paper);
  display:inline-block;padding-bottom:8px;border-bottom:1px solid var(--amber);
}
.sec-sub{margin:14px 0 24px;color:var(--mute);font-size:13.5px;letter-spacing:.05em}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px}

/* ---------- tiles ---------- */
.tile{
  display:grid;grid-template-columns:minmax(0,1fr);gap:14px;width:100%;
  position:relative;overflow:hidden;
  text-align:left;font-family:inherit;color:inherit;cursor:pointer;
  background:linear-gradient(180deg,rgba(243,236,222,.045),rgba(243,236,222,.015));
  border:1px solid var(--line);border-radius:2px;
  padding:26px 24px 24px;margin-bottom:18px;
  transition:border-color .35s ease,background .35s ease,transform .35s cubic-bezier(.2,.7,.2,1);
}
.tile:hover{border-color:rgba(217,164,95,.48);background:linear-gradient(180deg,rgba(217,164,95,.09),rgba(217,164,95,.02))}
.tile:active{transform:scale(.994)}
.tile-main{display:block;grid-column:1;grid-row:1;min-width:0;padding-right:2px}
.tile-eyebrow{display:block;font-size:10.5px;letter-spacing:.3em;color:var(--amber);opacity:.8;margin-bottom:10px}
.tile-name{display:block;font-size:22px;font-weight:300;letter-spacing:.14em;margin-bottom:6px}
.tile-name em{
  font-style:normal;font-size:10px;letter-spacing:.16em;color:var(--amber);
  margin-left:16px;vertical-align:4px;opacity:.8;white-space:nowrap;
}
.tile-desc{display:block;font-size:13.5px;color:var(--mute);line-height:1.85;letter-spacing:.03em;text-wrap:pretty}
.tile-go{
  grid-column:1;grid-row:2;justify-self:end;font-size:12px;letter-spacing:.14em;color:var(--paper);opacity:.72;white-space:nowrap;
  align-self:flex-end;margin-bottom:2px;
}
.tile-go i{font-style:normal;margin-left:6px;color:var(--amber)}
.tile:hover .tile-go{opacity:1}

/* ---------- tabs ---------- */
.board-day{font-size:12px;font-weight:300;letter-spacing:.08em;color:var(--mute-2);margin-left:10px;font-variant-numeric:tabular-nums}
.tabs{display:flex;gap:6px}
.tab{
  background:none;border:1px solid transparent;color:var(--mute-2);font-family:inherit;
  font-size:12.5px;letter-spacing:.14em;padding:6px 12px;cursor:pointer;border-radius:2px;
  transition:.25s;
}
.tab.is-on{color:var(--amber);border-color:rgba(217,164,95,.4);background:var(--amber-soft)}
.tab:hover{color:var(--paper)}

/* ---------- rank ---------- */
.rank{list-style:none;margin:26px 0 0;padding:0;border-top:1px solid var(--line)}
.rank li{
  display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:14px;
  padding:19px 4px;border-bottom:1px solid var(--line-2);
  animation:rise .5s cubic-bezier(.2,.7,.2,1) both;
}
.rank li .r{
  font-size:13px;color:var(--mute-2);font-variant-numeric:tabular-nums;letter-spacing:.1em;
}
.rank li .n{font-size:16.5px;font-weight:300;letter-spacing:.1em}
.rank li .n em{font-style:normal;font-size:11px;color:var(--mute-2);letter-spacing:.12em;margin-left:10px}
.rank li .p{
  font-size:17px;font-variant-numeric:tabular-nums;letter-spacing:.06em;color:var(--paper);
}
.rank li .p small{font-size:10px;color:var(--mute-2);margin-left:5px;letter-spacing:.12em}
.rank li.top .r{color:var(--amber)}
.rank li.top .n{font-size:17.5px}
.rank li.top .p{color:var(--amber)}
.rank li.top{background:linear-gradient(90deg,rgba(217,164,95,.07),transparent 70%)}
.rank li.empty{display:block;color:var(--mute-2);font-size:13px;text-align:center;padding:44px 0 40px;border:0;letter-spacing:.08em}
.rank li.empty span{display:block;margin-bottom:18px}
.rank li.empty button{width:auto;padding:12px 22px;font-size:12.5px;letter-spacing:.18em}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- wall ---------- */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.wall figure{margin:0;position:relative;overflow:hidden;aspect-ratio:1/1;background:var(--ink-3)}
.wall img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.94) contrast(1.02)}
.wall figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:18px 8px 7px;font-size:10.5px;letter-spacing:.1em;
  background:linear-gradient(transparent,rgba(0,0,0,.72));color:rgba(243,236,222,.92);
}

/* 灯串 */
.lamps{display:flex;justify-content:space-between;align-items:center;margin:44px 0 0;opacity:.55}
.lamps i{
  width:5px;height:5px;border-radius:50%;background:var(--amber);
  box-shadow:0 0 12px 2px rgba(217,164,95,.55);
  animation:twinkle 5.6s ease-in-out infinite;
}
.lamps i:nth-child(2n){animation-delay:1.3s}
.lamps i:nth-child(3n){animation-delay:2.6s}
@keyframes twinkle{0%,100%{opacity:.35}50%{opacity:1}}

/* ---------- rules ---------- */
.rules{margin-top:64px;padding-top:26px;border-top:1px solid var(--line)}
.rules h3{margin:0 0 14px;font-size:12px;font-weight:400;letter-spacing:.28em;color:var(--amber)}
.rules p{margin:0 0 10px;font-size:12.8px;color:var(--mute);line-height:2;letter-spacing:.03em}
.rules .fine{margin-top:22px;font-size:11px;color:var(--mute-2);letter-spacing:.08em}
.rules a{color:var(--mute-2);text-decoration:none;border-bottom:1px solid var(--line)}
.rules a:hover{color:var(--amber)}

/* ---------- sheet (棋局) ---------- */
.sheet{
  position:fixed;inset:0;z-index:40;background:var(--ink);
  display:flex;flex-direction:column;
  animation:up .38s cubic-bezier(.2,.7,.2,1) both;
}
.sheet::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 420px at 50% 0%,rgba(217,164,95,.16),transparent 65%);
}
@keyframes up{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.sheet-head{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:calc(14px + env(safe-area-inset-top)) 18px 14px;border-bottom:1px solid var(--line-2);
}
.back{
  background:none;border:0;color:var(--paper);font-size:20px;line-height:1;cursor:pointer;padding:6px 4px;
}
.sheet-title{font-size:13.5px;letter-spacing:.26em;color:var(--paper)}
.sheet-timer{margin-left:auto;font-size:12px;color:var(--mute-2);font-variant-numeric:tabular-nums;letter-spacing:.1em}

.setup{position:relative;padding:34px 22px;max-width:520px;margin:0 auto;width:100%}
.field{display:block;margin-bottom:20px}
.field span{display:block;font-size:11.5px;letter-spacing:.2em;color:var(--mute-2);margin-bottom:9px}
.field input{
  width:100%;background:rgba(243,236,222,.05);border:1px solid var(--line);
  color:var(--paper);font-family:inherit;font-size:16px;font-weight:300;letter-spacing:.06em;
  padding:13px 14px;border-radius:2px;outline:none;transition:.25s;
}
.field input:focus{border-color:rgba(217,164,95,.6);background:rgba(217,164,95,.06)}
.field input::placeholder{color:var(--mute-2);opacity:.7}
.modes{display:flex;gap:8px;margin:26px 0 26px}
.mode{
  flex:1;background:none;border:1px solid var(--line);color:var(--mute);
  font-family:inherit;font-size:13px;letter-spacing:.14em;padding:12px 8px;cursor:pointer;
  border-radius:2px;transition:.25s;
}
.mode.is-on{border-color:rgba(217,164,95,.55);color:var(--amber);background:var(--amber-soft)}
.primary{
  width:100%;background:var(--amber);border:1px solid var(--amber);color:#16130d;
  font-family:inherit;font-size:14px;font-weight:400;letter-spacing:.24em;
  padding:15px 18px;cursor:pointer;border-radius:2px;transition:.25s;
}
.primary:hover{background:#e4b273;border-color:#e4b273}
.primary:disabled{opacity:.45;cursor:default}
.ghost{
  width:100%;background:none;border:1px solid var(--line);color:var(--mute);
  font-family:inherit;font-size:13px;letter-spacing:.2em;padding:13px 18px;cursor:pointer;
  border-radius:2px;margin-top:10px;transition:.25s;
}
.ghost:hover{color:var(--paper);border-color:rgba(243,236,222,.28)}
.hint{margin:16px 0 0;font-size:11.5px;color:var(--mute-2);letter-spacing:.06em;line-height:1.9}

.game{position:relative;padding:18px 18px 30px;display:flex;flex-direction:column;align-items:center;flex:1}
.turn{font-size:13px;letter-spacing:.2em;color:var(--paper);margin:6px 0 18px;min-height:22px}
.turn b{font-weight:400;color:var(--amber)}

/* 棋盘 */
.board{
  --n:15;
  width:min(92vw,520px);aspect-ratio:1/1;
  display:grid;grid-template-columns:repeat(var(--n),1fr);grid-template-rows:repeat(var(--n),1fr);
  background:linear-gradient(158deg,#efe5d2,#e5d8c0 60%,#dccdb2);
  box-shadow:0 26px 70px -24px rgba(0,0,0,.9),0 0 0 1px rgba(243,236,222,.14),
             inset 0 0 0 10px rgba(255,255,255,.16);
  border-radius:2px;padding:0;position:relative;touch-action:manipulation;
}
.cell{position:relative;display:flex;align-items:center;justify-content:center}
.cell::before{ /* 横线 */
  content:"";position:absolute;left:0;right:0;top:50%;height:1px;
  background:rgba(84,66,42,.42);transform:translateY(-.5px);
}
.cell::after{ /* 竖线 */
  content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;
  background:rgba(84,66,42,.42);transform:translateX(-.5px);
}
.cell.edge-r::before{right:50%}
.cell.edge-b::after{bottom:50%}
.cell.edge-l::before{left:50%}
.cell.edge-t::after{top:50%}
.stone{
  width:82%;height:82%;border-radius:50%;z-index:2;
  animation:drop .22s cubic-bezier(.2,.8,.3,1) both;
}
.stone.b{background:radial-gradient(circle at 34% 28%,#4a453c,#16140f 62%);box-shadow:0 2px 5px rgba(0,0,0,.5),inset 0 -1px 2px rgba(255,255,255,.12)}
.stone.w{background:radial-gradient(circle at 34% 28%,#fffdf7,#ded3bd 72%);box-shadow:0 2px 5px rgba(0,0,0,.34),inset 0 -1px 2px rgba(0,0,0,.08)}
.stone.last::after{
  content:"";position:absolute;width:26%;height:26%;border-radius:50%;
  background:var(--wine);opacity:.85;
}
@keyframes drop{from{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}
.game-foot{display:flex;align-items:center;justify-content:space-between;width:min(92vw,520px);margin-top:18px;gap:12px}
.game-foot span{font-size:11.5px;color:var(--mute-2);letter-spacing:.06em}
.game-foot .ghost{width:auto;margin:0;padding:8px 14px;font-size:11.5px;letter-spacing:.14em}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;
  background:rgba(8,7,6,.78);backdrop-filter:blur(6px);padding:24px;
  animation:fade .3s ease both;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal-card{
  width:100%;max-width:360px;background:linear-gradient(180deg,#191610,#12100c);
  border:1px solid rgba(217,164,95,.32);border-radius:3px;padding:32px 26px 26px;text-align:center;
  box-shadow:0 30px 80px -30px rgba(0,0,0,.95);
}
.modal-kicker{font-size:10.5px;letter-spacing:.34em;color:var(--amber);opacity:.85}
.modal-name{margin:14px 0 6px;font-size:19px;letter-spacing:.12em;font-weight:300}
.modal-pts{font-size:44px;font-weight:200;letter-spacing:.02em;color:var(--amber);font-variant-numeric:tabular-nums;line-height:1.2}
.modal-pts small{font-size:12px;letter-spacing:.2em;color:var(--mute-2);margin-left:6px}
.modal-note{margin:10px 0 22px;font-size:12.5px;color:var(--mute);letter-spacing:.04em;line-height:1.9}

@media (max-width:420px){
  .wall{grid-template-columns:repeat(2,1fr)}
  .tile{padding:20px 18px}
  .tile-desc{max-width:26ch}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* 2026-11-14 五子棋改成跳转小游戏：卡片变成 <a> */
a.tile{text-decoration:none;color:inherit}
.rank .empty a.primary{display:inline-block;width:auto;margin-top:16px;text-align:center;text-decoration:none;letter-spacing:.2em}