:root{
  --bg:#080a10;
  --card:rgba(18,23,34,.72);
  --line:rgba(150,180,255,.13);
  --txt:#eaf1fc;
  --dim:#7d8ca4;
  --acc:#5b8cff;
  --teal:#45e3b0;
  --pink:#e85bff;
  --warn:#ffb454;
  --err:#ff6b6b;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  background:var(--bg);
  color:var(--txt);
  font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* ---------- 背景光斑 ---------- */
.bg-orbs{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.o1{width:520px;height:520px;left:-160px;top:-160px;background:radial-gradient(circle,#1d4fd8,transparent 70%);animation:drift 22s ease-in-out infinite}
.o2{width:460px;height:460px;right:-140px;top:18%;background:radial-gradient(circle,#8a2be2,transparent 70%);animation:drift 27s ease-in-out infinite reverse}
.o3{width:600px;height:600px;left:38%;bottom:-280px;background:radial-gradient(circle,#0f9b8e,transparent 70%);animation:drift 32s ease-in-out infinite}
@keyframes drift{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(40px,-40px) scale(1.12)}
}

/* ---------- 顶部 ---------- */
.hero{position:relative;z-index:2;padding:74px 24px 44px;text-align:center}
.hero-inner{max-width:760px;margin:0 auto;animation:rise .9s cubic-bezier(.2,.8,.2,1) both}
.logo{width:46px;height:46px;margin:0 auto 18px;filter:drop-shadow(0 0 16px rgba(91,140,255,.6))}
.logo svg{width:100%;height:100%}
h1{
  font-size:44px;font-weight:700;letter-spacing:.06em;line-height:1.15;
  color:#fff;
  background:linear-gradient(100deg,#ffffff 5%,#a9c8ff 48%,#45e3b0 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  text-shadow:0 0 34px rgba(91,140,255,.35);
}
.sub{margin-top:12px;font-size:14px;color:var(--dim);letter-spacing:.03em}

.stats{
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:30px;
}
.stat{
  min-width:104px;padding:13px 18px;border-radius:13px;
  background:var(--card);border:1px solid var(--line);
  backdrop-filter:blur(16px);
}
.stat b{
  display:block;font-size:23px;font-weight:600;line-height:1.2;
  color:#eaf6ff;
  background:linear-gradient(140deg,#ffffff,#45e3b0);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;
}
.stat span{display:block;margin-top:4px;font-size:10.5px;color:var(--dim);letter-spacing:.1em}

/* ---------- 主体 ---------- */
main{
  position:relative;z-index:2;
  max-width:1000px;margin:0 auto;padding:0 24px 70px;
  display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:26px;
  align-items:start;
}

/* ---------- 发布框 ---------- */
.composer{
  padding:22px;border-radius:18px;
  background:var(--card);border:1px solid var(--line);
  backdrop-filter:blur(20px);
  box-shadow:0 24px 60px -26px rgba(0,0,0,.95);
  animation:rise .9s .08s cubic-bezier(.2,.8,.2,1) both;
  position:sticky;top:24px;
}
.composer-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:16px}
.composer-head h2{font-size:15px;font-weight:600;letter-spacing:.1em;color:#cfdcf2}
.counter{font-size:11px;color:var(--dim);font-family:ui-monospace,Menlo,Consolas,monospace}
.counter b{color:var(--teal);font-weight:500}

.field{margin-bottom:13px}
.field label{display:block;margin-bottom:6px;font-size:11px;color:#8fa1bb;letter-spacing:.1em}
.field input,.field textarea{
  width:100%;padding:11px 13px;border-radius:10px;
  background:rgba(8,12,20,.72);border:1px solid var(--line);
  color:var(--txt);font:inherit;font-size:14px;
  outline:none;transition:.2s;resize:vertical;
}
.field input::placeholder,.field textarea::placeholder{color:#4e5b70}
.field input:focus,.field textarea:focus{
  border-color:rgba(91,140,255,.62);
  box-shadow:0 0 0 3px rgba(91,140,255,.13);
  background:rgba(10,15,25,.9);
}

.moods{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.mood{
  padding:6px 13px;border-radius:20px;font-size:11.5px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:#93a5c0;cursor:pointer;transition:.18s;font-family:inherit;
}
.mood:hover{border-color:rgba(150,180,255,.32);color:#d4e2f8}
.mood.active{
  background:linear-gradient(120deg,rgba(91,140,255,.34),rgba(69,227,176,.20));
  border-color:rgba(91,140,255,.66);color:#fff;
  box-shadow:0 0 0 1px rgba(91,140,255,.15),0 4px 16px -6px rgba(91,140,255,.7);
}

.btn-primary{
  width:100%;padding:12px;border-radius:11px;border:none;
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(120deg,#4a7cff,#3ec9a8);
  color:#04121c;font-size:14px;font-weight:600;letter-spacing:.06em;
  cursor:pointer;transition:.2s;font-family:inherit;
  box-shadow:0 10px 28px -10px rgba(74,124,255,.85);
}
.btn-primary svg{width:17px;height:17px;transition:.2s}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 34px -10px rgba(74,124,255,1)}
.btn-primary:hover svg{transform:translateX(3px)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-primary.loading span{opacity:.6}

.msg{
  margin-top:11px;font-size:12px;text-align:center;
  height:0;opacity:0;overflow:hidden;transition:.25s;
}
.msg.show{height:auto;opacity:1;padding:8px;border-radius:8px}
.msg.ok{color:var(--teal);background:rgba(69,227,176,.09);border:1px solid rgba(69,227,176,.24)}
.msg.err{color:var(--err);background:rgba(255,107,107,.09);border:1px solid rgba(255,107,107,.24)}

/* ---------- 留言列表 ---------- */
.board{animation:rise .9s .16s cubic-bezier(.2,.8,.2,1) both}
.board-head{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:15px;
}
.board-head h2{font-size:15px;font-weight:600;letter-spacing:.08em;color:#cfdcf2;display:flex;align-items:center;gap:9px}
.tag{
  padding:2px 9px;border-radius:20px;font-size:10.5px;font-weight:500;
  background:rgba(91,140,255,.16);border:1px solid rgba(91,140,255,.3);
  color:#9dc0ff;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.sorter{display:flex;gap:4px;padding:3px;border-radius:9px;background:rgba(255,255,255,.035);border:1px solid var(--line)}
.sort{
  padding:5px 13px;border-radius:7px;border:none;background:transparent;
  color:#8494ad;font-size:11.5px;cursor:pointer;transition:.18s;font-family:inherit;
}
.sort:hover{color:#d4e2f8}
.sort.active{background:rgba(91,140,255,.22);color:#fff;box-shadow:inset 0 0 0 1px rgba(91,140,255,.42)}

.list{display:flex;flex-direction:column;gap:11px;transition:opacity .2s}
.list.dim{opacity:.45}

.card{
  padding:16px 17px;border-radius:14px;
  background:var(--card);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  transition:.22s cubic-bezier(.2,.8,.2,1);
  animation:cardIn .42s cubic-bezier(.2,.8,.2,1) both;
}
.card:hover{
  border-color:rgba(150,180,255,.30);
  transform:translateY(-2px);
  box-shadow:0 16px 40px -20px rgba(0,0,0,.9);
}
@keyframes cardIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

.card-top{display:flex;align-items:center;gap:11px;margin-bottom:10px}
.avatar{
  width:34px;height:34px;flex:0 0 auto;border-radius:11px;
  display:grid;place-items:center;font-size:14px;font-weight:600;
  color:#04121c;
}
.avatar[data-mood="calm"] {background:linear-gradient(140deg,#9dc0ff,#5b8cff)}
.avatar[data-mood="happy"]{background:linear-gradient(140deg,#ffd97d,#ffb454)}
.avatar[data-mood="think"]{background:linear-gradient(140deg,#8ff0d4,#45e3b0)}
.avatar[data-mood="sad"]  {background:linear-gradient(140deg,#b3c5e8,#7d93c7)}
.avatar[data-mood="angry"]{background:linear-gradient(140deg,#ff9a9a,#ff6b6b)}

.who{flex:1;min-width:0}
.who strong{display:block;font-size:13.5px;font-weight:600;color:#e2ecfc}
.who .meta{display:block;margin-top:2px;font-size:10.5px;color:#6a7891;letter-spacing:.04em}

.like{
  display:flex;align-items:center;gap:5px;
  padding:5px 10px;border-radius:20px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:#8494ad;font-size:11.5px;cursor:pointer;transition:.18s;font-family:inherit;
  font-variant-numeric:tabular-nums;
}
.like svg{width:14px;height:14px;transition:.2s}
.like:hover:not(:disabled){color:#ff8fb0;border-color:rgba(255,143,176,.4);background:rgba(255,143,176,.09)}
.like:hover:not(:disabled) svg{transform:scale(1.15)}
.like.liked{color:#ff6b9d;border-color:rgba(255,107,157,.42);background:rgba(255,107,157,.11)}
.like.liked svg path{fill:currentColor}
.like:disabled{cursor:default}

.text{font-size:13.8px;line-height:1.7;color:#c2d0e4;word-break:break-word;white-space:pre-wrap}

/* 骨架 */
.skeleton{
  height:96px;border-radius:14px;
  background:linear-gradient(100deg,rgba(255,255,255,.035) 30%,rgba(255,255,255,.085) 50%,rgba(255,255,255,.035) 70%);
  background-size:200% 100%;
  animation:shimmer 1.4s infinite;
}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}

.empty{padding:44px 20px;text-align:center;color:#5f6d84;font-size:13.5px}
.empty.err{color:var(--err)}

/* 分页 */
.pager{display:flex;justify-content:center;align-items:center;gap:5px;margin-top:20px;flex-wrap:wrap}
.pg{
  min-width:34px;height:32px;padding:0 11px;border-radius:9px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:#93a5c0;font-size:12px;cursor:pointer;transition:.18s;font-family:inherit;
}
.pg:hover:not(:disabled){border-color:rgba(91,140,255,.5);color:#fff;background:rgba(91,140,255,.16)}
.pg.on{background:linear-gradient(120deg,rgba(91,140,255,.42),rgba(69,227,176,.22));border-color:rgba(91,140,255,.65);color:#fff;font-weight:600}
.pg:disabled{opacity:.32;cursor:not-allowed}
.dots{color:#4e5b70;padding:0 3px;font-size:12px}

/* ---------- 页脚 ---------- */
footer{
  position:relative;z-index:2;
  padding:26px 24px 40px;text-align:center;
}
footer p{font-size:11px;color:#4b5769;letter-spacing:.06em}

@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ---------- 响应式 ---------- */
@media (max-width:860px){
  main{grid-template-columns:1fr;gap:20px}
  .composer{position:static}
  h1{font-size:33px}
  .hero{padding:48px 20px 32px}
  .stat{min-width:88px;padding:11px 14px}
  .stat b{font-size:19px}
  main{padding:0 16px 56px}
}