:root{
  --primary:#ef75a2;
  --primary-deep:#d85a8c;
  --bg:#fff4f8;
  --text:#63394d;
  --muted:#b7899b;
  --line:#ffe1ec;
  --shadow:#d889aa33;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  font-family:"Microsoft YaHei",-apple-system,"PingFang SC",sans-serif;
  color:var(--text);
  -webkit-tap-highlight-color:transparent;
}
.container{
  max-width:480px;
  margin:auto;
  padding:18px 16px 110px;
}
h1{font-size:22px;margin:8px 0 18px}
h2{font-size:16px;margin:0 0 12px}
.center{text-align:center}

.hero{
  padding:30px;
  border-radius:32px;
  background:linear-gradient(135deg,#ff91b9,#e96b9d);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.hero h1{margin:0 0 6px}
.hero p{margin:0;opacity:.9}
.hero:after{
  content:"❤️ ❤️ ❤️";
  position:absolute;
  right:10px;bottom:10px;
  opacity:.35;
  font-size:20px;
}

.card{
  background:#fff;
  border-radius:26px;
  padding:22px;
  margin-top:18px;
  box-shadow:0 10px 30px var(--shadow);
}
.center-card{text-align:center}
.big{
  font-size:46px;
  text-align:center;
  color:var(--primary);
  font-weight:800;
  margin:4px 0;
}

/* 按钮 */
.btn{
  border:0;
  padding:14px 24px;
  border-radius:30px;
  background:var(--primary);
  color:#fff;
  font-size:15px;
  cursor:pointer;
  transition:transform .15s,filter .15s,background .15s;
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:scale(.96)}
.btn.full{width:100%;margin-top:14px}
.btn.ghost{background:#fff;color:var(--primary);border:2px solid var(--primary)}
.btn.small{padding:8px 14px;font-size:13px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* 输入框 */
input,textarea{
  width:100%;
  padding:13px 16px;
  border:2px solid var(--line);
  border-radius:16px;
  background:#fff;
  color:var(--text);
  font:inherit;
  transition:border-color .2s;
}
input:focus,textarea:focus{outline:none;border-color:var(--primary)}
textarea{resize:vertical;min-height:90px}
.row{display:flex;gap:10px;margin-top:14px}
.row input{flex:1}

/* 底部导航 */
.nav{
  position:fixed;
  bottom:15px;
  left:0;
  right:0;
  margin:0 auto;
  width:min(460px,92%);
  background:#fff;
  border-radius:35px;
  padding:12px 6px;
  display:flex;
  justify-content:space-around;
  box-shadow:0 5px 25px #9995;
  z-index:999;
}
.nav a{
  text-decoration:none;
  color:var(--muted);
  font-size:12px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2px;
  padding:6px 14px;
  border-radius:20px;
  transition:color .2s,background .2s;
}
.nav a:hover{color:var(--primary)}
.nav a.active{color:var(--primary);background:var(--bg);font-weight:600}
.nav span{display:block;font-size:22px;line-height:1.2}

/* 时间线 */
.timeline{border-left:4px solid var(--primary);padding-left:18px;display:flex;flex-direction:column;gap:14px}
.story-item{position:relative}
.story-item:before{
  content:"";
  position:absolute;
  left:-25px;top:6px;
  width:12px;height:12px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--primary);
}
.story-item .date{font-size:12px;color:var(--muted)}
.story-item .txt{font-size:15px;margin:3px 0 0;line-height:1.5}
.del{
  border:0;background:none;
  color:var(--muted);
  font-size:12px;
  cursor:pointer;
  padding:2px 6px;
  border-radius:8px;
}
.del:hover{color:#d33;background:var(--bg)}

/* 今日回忆 */
.memory-item{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 4px;
  border-bottom:1px dashed var(--line);
  animation:pop .3s ease;
}
.memory-item:last-child{border-bottom:0}
.memory-item .txt{flex:1;font-size:14px;line-height:1.5}
.memory-item .time{font-size:11px;color:var(--muted);white-space:nowrap}
.empty{color:var(--muted);font-size:13px;text-align:center;padding:16px 0}

/* 相册 */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
.photo-card{
  position:relative;
  aspect-ratio:1;
  border-radius:18px;
  overflow:hidden;
  background:var(--line);
  cursor:zoom-in;
  animation:pop .3s ease;
}
.photo-card img{width:100%;height:100%;object-fit:cover;display:block}
.photo-card .del{
  position:absolute;
  top:8px;right:8px;
  background:#0008;
  color:#fff;
  border-radius:50%;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
}
.photo-card .del:hover{background:#d33;color:#fff}
.lightbox{
  position:fixed;
  inset:0;
  background:#000c;
  display:none;
  align-items:center;
  justify-content:center;
  z-index:100;
  cursor:zoom-out;
}
.lightbox.show{display:flex}
.lightbox img{
  max-width:92%;
  max-height:85%;
  border-radius:14px;
}

/* 吃什么 */
.food-result{
  font-size:52px;
  text-align:center;
  padding:18px 0;
  min-height:100px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.food-result.pop{animation:pop .45s ease}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--bg);
  border:1.5px solid var(--line);
  border-radius:20px;
  padding:6px 12px;
  font-size:14px;
}
.chip button{
  border:0;background:none;
  color:var(--muted);
  cursor:pointer;
  font-size:12px;
  padding:0;
}
.chip button:hover{color:#d33}

/* 我的 */
.hint{font-size:12px;color:var(--muted);margin:10px 0 0;text-align:center}
.pwd-change{
  display:flex;
  gap:8px;
  margin-top:14px;
  align-items:center;
}
.pwd-change input{flex:1}
.secret-msg{white-space:pre-wrap;font-size:15px;line-height:1.7}
.shake{animation:shake .4s ease}

/* 天气 */
.weather-main{display:flex;align-items:center;gap:16px}
.weather-icon{font-size:52px;line-height:1}
.weather-info{flex:1}
.weather-city{font-size:13px;color:var(--muted)}
.weather-temp{font-size:40px;font-weight:800;color:var(--primary);line-height:1.15}
.weather-desc{font-size:14px}
.weather-meta{font-size:12px;color:var(--muted);margin-top:10px;border-top:1px dashed var(--line);padding-top:10px}
.tip{
  background:var(--bg);
  border-radius:14px;
  padding:10px 14px;
  margin-top:10px;
  font-size:13px;
  line-height:1.6;
}

/* 美团 */
.mt-h2{margin-top:26px}

/* 相册上传:input 透明覆盖按钮,手机/电脑都稳定触发 */
.upload-btn{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:14px;
  cursor:pointer;
}
.upload-btn input{
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:100%;
  opacity:0;
  cursor:pointer;
  font-size:0;
}

/* 生理期 */
.period-main{
  font-size:22px;
  font-weight:800;
  color:var(--primary);
  text-align:center;
  padding:10px 0 4px;
}
.period-sub{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-bottom:4px;
}
.period-opts{
  display:flex;
  gap:10px;
  margin-top:14px;
}
.period-opts label{
  flex:1;
  font-size:13px;
  color:var(--muted);
  display:flex;
  flex-direction:column;
  gap:6px;
}
.period-opts select{
  padding:8px 10px;
  border:2px solid var(--line);
  border-radius:12px;
  background:#fff;
  color:var(--text);
  font:inherit;
  font-size:14px;
}
.period-opts select:focus{outline:none;border-color:var(--primary)}
.period-history{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
  min-height:0;
}
.period-history .empty{
  font-size:12px;
  padding:0;
  text-align:left;
}
.his-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--bg);
  border:1.5px solid var(--line);
  border-radius:20px;
  padding:5px 12px;
  font-size:13px;
}
.his-chip button{
  border:0;
  background:none;
  color:var(--muted);
  cursor:pointer;
  font-size:12px;
  padding:0;
}
.his-chip button:hover{color:#d33}
.mt-h2{margin-top:26px}

/* 动画 */
@keyframes pop{
  0%{transform:scale(.6);opacity:0}
  100%{transform:scale(1);opacity:1}
}
@keyframes shake{
  0%,100%{transform:translateX(0)}
  25%{transform:translateX(-6px)}
  75%{transform:translateX(6px)}
}

/* ===== 响应式:平板 / 桌面端 ===== */
@media (min-width:768px){
  .container{
    max-width:1080px;
    padding:110px 32px 70px;
  }
  h1{font-size:26px}

  /* 首页:hero 通栏,卡片两列并排 */
  .home-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    align-items:stretch;
  }
  .home-grid .hero{grid-column:1 / -1;padding:44px 48px}
  .home-grid .hero h1{font-size:30px}
  .home-grid .card{margin:0;max-width:none}

  /* 其他页面卡片限宽居中,避免拉太宽 */
  .container > h1{text-align:center}
  .container > .card{
    max-width:720px;
    margin-left:auto;
    margin-right:auto;
  }

  /* 子页面双栏(故事/吃什么/我的) */
  .stack2{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    align-items:start;
  }
  .stack2 > .card{margin:0;max-width:none}
  .stack2 > .card:last-child{position:sticky;top:110px}

  /* 相册:3 列;超宽屏 4 列 */
  .grid{grid-template-columns:repeat(3,1fr)}
  .food-result{font-size:64px}

  /* 导航移到顶部居中 */
  .nav{
    top:16px;
    bottom:auto;
    width:-webkit-fit-content;
    width:fit-content;
    max-width:calc(100% - 40px);
    padding:10px 18px;
  }
  .nav a{font-size:13px;padding:9px 16px}
  .nav span{font-size:22px}
}
@media (min-width:1200px){
  .grid{grid-template-columns:repeat(4,1fr)}
  .container{max-width:1200px}
}