/* 鲸鱼惠 · 公共样式 */
:root{
  --sea1:#eaf5fd;--sea2:#cfe6f8;--sea3:#a9d1f0;
  --navy:#14315c;--ink:#24405e;--muted:#6f86a0;--line:rgba(36,64,94,.14);
  --paper:#fbf7ee;--card:#ffffff;--gold:#d9a94a;--gold-ink:#9a7224;
  --hui:#4f9be0;--qiu:#f08a3c;--cheng:#a689e0;--xing:#d0424f;--ya:#6c7fe0;--cai:#b468e6;
  --f-cute:"ZCOOL KuaiLe","Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;
  --f-body:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  --f-hand:"KaiTi","STKaiti","楷体","Kaiti SC",serif;
  --ease:cubic-bezier(.2,.8,.2,1);
  --r:22px;
  --shadow:0 18px 40px -22px rgba(20,60,110,.45),0 2px 6px -2px rgba(20,60,110,.12);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:#cfe6f8}
.badge.solo.flip .photo img.main{transform:translateX(-50%) scale(1.05) rotate(-2deg)}
body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background:linear-gradient(180deg,var(--sea1),var(--sea2) 55%,var(--sea3));background-attachment:fixed}
img{max-width:100%;display:block}
a{color:inherit}
button,input{font:inherit;color:inherit}
[hidden]{display:none!important}
.wrap{width:min(1160px,100% - 32px);margin-inline:auto}

@font-face{font-family:'ZCOOL KuaiLe';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/zcool-kuaile.woff2') format('woff2')}
/* 海底背景：光柱 + 泡泡 + 鲸鱼（和一千粉的信同一套） */
.sea{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.whale{position:fixed;z-index:0;pointer-events:none;opacity:.16;color:#2c6aa8}
.whale svg{display:block;width:100%;height:auto;transform:scaleX(-1)}
.w1{width:180px;top:16%;left:-200px;animation:swim 46s linear infinite}
.w2{width:110px;top:68%;left:-140px;animation:swim 34s linear -12s infinite}
.w3{width:70px;top:38%;left:-100px;animation:swim 28s linear -20s infinite;opacity:.1}
@keyframes swim{from{transform:translateX(0) translateY(0)}50%{transform:translateX(60vw) translateY(-18px)}to{transform:translateX(calc(100vw + 260px)) translateY(0)}}
main,header,footer{position:relative;z-index:1}

/* 顶栏 */
.top{position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);background:rgba(240,248,254,.72);border-bottom:1px solid rgba(255,255,255,.6)}
.top .wrap{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand img{width:40px;height:32px}
.brand b{font-family:var(--f-cute);font-weight:400;font-size:22px;color:var(--navy);letter-spacing:.04em}
.nav{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a,.nav span{flex:none;text-decoration:none;padding:8px 14px;border-radius:999px;font-size:15px;color:var(--ink);transition:background .2s,color .2s;white-space:nowrap}
.nav a:hover{background:rgba(79,155,224,.12)}
.nav a[aria-current="page"]{background:var(--navy);color:#fff}
.nav span{color:var(--muted);opacity:.7;cursor:default}
.nav span small{font-size:11px;margin-left:3px;padding:1px 6px;border-radius:999px;background:rgba(111,134,160,.15)}
@media (max-width:720px){
  .top .wrap{height:auto;flex-wrap:wrap;gap:0;padding:10px 0 0}
  .brand b{font-size:20px}
  .nav{margin:8px -16px 0;padding:0 16px 10px;width:calc(100% + 32px)}
  .nav a,.nav span{padding:7px 12px;font-size:14px}
}

/* 通用 */
.h-cute{font-family:var(--f-cute);font-weight:400;color:var(--navy);letter-spacing:.02em}
.eyebrow{font-size:13px;letter-spacing:.32em;color:var(--gold-ink)}
.panel{background:rgba(255,255,255,.88);border-radius:var(--r);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:999px;border:0;cursor:pointer;text-decoration:none;font-size:15px;
  background:var(--navy);color:#fff;transition:transform .15s var(--ease),box-shadow .2s,background .2s;box-shadow:0 8px 18px -10px rgba(20,49,92,.8)}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn.ghost{background:#fff;color:var(--navy);box-shadow:inset 0 0 0 1.5px rgba(20,49,92,.2)}
.btn.gold{background:var(--gold);color:#3c2a06}
.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}
.btn svg{width:18px;height:18px}

/* 页脚 */
.foot{margin-top:72px;padding:28px 0 40px;color:var(--muted);font-size:13px;text-align:center}
.foot .links{display:flex;justify-content:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.foot .links a{text-decoration:none;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.7)}
.foot .links a.off{opacity:.45;pointer-events:none}
.foot p{margin:4px 0}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition-duration:.01s!important}}

/* 背景音乐按钮 */
.bgm{position:fixed;left:18px;bottom:18px;z-index:30;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.85);color:var(--hui);cursor:pointer;display:grid;place-items:center;font-size:18px;box-shadow:0 6px 14px -8px rgba(20,60,110,.5);transition:background .3s}
.bgm:hover{background:#fff}
.bgm i{font-style:normal;display:block;animation:note 2.4s ease-in-out infinite}
.bgm.muted i{animation:none;opacity:.4}
.bgm.muted::after{content:"";position:absolute;width:24px;height:2px;background:var(--muted);transform:rotate(-45deg);border-radius:2px}
@keyframes note{50%{transform:translateY(-3px) rotate(-8deg)}}