/* ===================== 小公主成长日记 · 样式 ===================== */
:root{
  --mint-50:#f2fbf7;
  --mint-100:#e3f7ef;
  --mint-200:#c9efe0;
  --mint-300:#a7e3cf;
  --mint-400:#7fd3b8;
  --mint-500:#57bd9c;
  --mint-600:#3da384;
  --cream:#fffdf8;
  --pink:#f3a9bb;
  --gold:#e6b35a;
  --ink:#3b4a45;
  --ink-soft:#6b7d77;
  --ink-faint:#9bb3ab;
  --shadow:0 14px 34px rgba(61,163,132,.16);
  --shadow-sm:0 8px 20px rgba(61,163,132,.12);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  line-height:1.7;
  background:
    radial-gradient(circle at 12% 18%, rgba(255,255,255,.55) 0 6px, transparent 7px),
    radial-gradient(circle at 78% 30%, rgba(255,255,255,.45) 0 5px, transparent 6px),
    radial-gradient(circle at 40% 70%, rgba(255,255,255,.4) 0 4px, transparent 5px),
    linear-gradient(180deg,var(--mint-50) 0%, var(--mint-100) 45%, var(--mint-200) 100%);
  background-attachment:fixed;
  min-height:100vh;
}

/* ---------- 页头 ---------- */
.header{
  text-align:center;
  padding:64px 20px 36px;
  position:relative;
}
.header .crown{
  width:88px;height:88px;margin:0 auto 8px;
  filter:drop-shadow(0 8px 14px rgba(230,179,90,.35));
  animation:bob 4s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.header h1{
  font-family:"ZCOOL KuaiLe","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:clamp(34px,6vw,58px);
  margin:.1em 0 .15em;
  color:var(--mint-600);
  letter-spacing:2px;
  text-shadow:0 3px 0 #fff, 0 6px 14px rgba(61,163,132,.18);
}
.header .subtitle{
  display:inline-block;
  font-size:clamp(14px,2.4vw,18px);
  color:var(--ink-soft);
  background:rgba(255,255,255,.7);
  border:2px dashed var(--mint-300);
  padding:6px 18px;
  border-radius:999px;
}
.header .deco{
  position:absolute;top:40px;font-size:26px;opacity:.8;
  animation:spin 9s linear infinite;
}
.header .deco.l{left:12%;}
.header .deco.r{right:12%;animation-direction:reverse;}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 时光轴 ---------- */
.timeline{
  position:relative;
  max-width:1040px;
  margin:10px auto 40px;
  padding:20px 0 30px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;top:0;bottom:0;
  width:5px;transform:translateX(-50%);
  background:linear-gradient(180deg,var(--mint-300),var(--mint-500),var(--mint-300));
  border-radius:999px;
  box-shadow:0 0 0 4px rgba(255,255,255,.6);
}

.tl-item{
  position:relative;
  width:50%;
  padding:18px 46px;
}
.tl-item.left{left:0;}
.tl-item.right{left:50%;}

.tl-node{
  position:absolute;top:38px;
  width:24px;height:24px;border-radius:50%;
  background:var(--mint-500);
  border:5px solid #fff;
  box-shadow:0 0 0 4px var(--mint-200), 0 4px 10px rgba(61,163,132,.3);
  z-index:2;
}
.tl-item.left .tl-node{right:-12px;}
.tl-item.right .tl-node{left:-12px;}
.tl-node::after{
  content:"";position:absolute;inset:6px;border-radius:50%;
  background:#fff;opacity:.85;
}

/* 卡片 */
.tl-card{
  background:var(--cream);
  border-radius:24px;
  padding:14px;
  box-shadow:var(--shadow);
  border:2px solid #fff;
  transition:transform .35s ease, box-shadow .35s ease;
}
.tl-card:hover{
  transform:translateY(-6px);
  box-shadow:0 22px 44px rgba(61,163,132,.22);
}

/* 照片：白边拍立得感 */
.tl-photo{
  background:#fff;
  border-radius:18px;
  padding:10px;
  box-shadow:inset 0 0 0 1px var(--mint-100);
}
.tl-photo img{
  display:block;
  width:100%;
  aspect-ratio:4/5;
  object-fit:cover;
  border-radius:12px;
  background:var(--mint-50);
}

/* 文字区 */
.tl-body{padding:14px 8px 6px;}
.tl-meta{
  display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;
  margin-bottom:10px;
}
.tl-chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;
  padding:5px 12px;border-radius:999px;
}
.tl-chip.date{background:var(--mint-100);color:var(--mint-600);}
.tl-chip.loc{background:#fdeef2;color:#d98098;}
.tl-chip.age{background:#fff6e2;color:#c8922e;}
.tl-chip .icn{width:16px;height:16px;display:block;}
.tl-comment{
  font-size:15px;color:var(--ink-soft);
  border-left:3px solid var(--mint-300);
  padding:6px 0 6px 12px;
  margin-top:4px;
}
.tl-comment.empty{color:var(--ink-faint);font-style:italic;}

/* 进度小标 */
.tl-stage{
  position:absolute;top:30px;
  font-family:"ZCOOL KuaiLe",sans-serif;
  font-size:15px;color:#fff;background:var(--mint-500);
  padding:3px 12px;border-radius:999px;box-shadow:var(--shadow-sm);
  white-space:nowrap;
}
.tl-item.left .tl-stage{right:46px;}
.tl-item.right .tl-stage{left:46px;}

/* 入场动画 */
.tl-item{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease;}
.tl-item.show{opacity:1;transform:none;}

/* ---------- 页脚 ---------- */
.footer{
  text-align:center;color:var(--ink-faint);
  font-size:13px;padding:10px 20px 50px;
}
.footer .heart{color:var(--pink);}

/* ---------- 背景音乐按钮 ---------- */
.music-btn{
  position:fixed;right:22px;bottom:22px;z-index:50;
  width:54px;height:54px;border:none;border-radius:50%;
  background:linear-gradient(135deg,var(--mint-400),var(--mint-500));
  color:#fff;cursor:pointer;
  box-shadow:0 8px 20px rgba(61,163,132,.4);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease;
}
.music-btn:hover{transform:scale(1.08);}
.music-btn svg{width:24px;height:24px;}
.music-btn.playing{animation:pulse 1.6s ease-in-out infinite;}
@keyframes pulse{
  0%,100%{box-shadow:0 8px 20px rgba(61,163,132,.4),0 0 0 0 rgba(87,189,156,.5);}
  50%{box-shadow:0 8px 20px rgba(61,163,132,.4),0 0 0 12px rgba(87,189,156,0);}
}

/* ---------- 响应式：单列 ---------- */
@media(max-width:760px){
  .timeline::before{left:22px;}
  .tl-item{width:100%;left:0!important;padding:14px 10px 14px 54px;}
  .tl-item.left .tl-node,.tl-item.right .tl-node{left:10px;right:auto;}
  .tl-item.left .tl-stage,.tl-item.right .tl-stage{left:54px;right:auto;}
}