/* ===== 设计令牌 ===== */
:root{
  --primary:#4f46e5;
  --primary-2:#7c3aed;
  --accent:#ec4899;
  --bg:#f5f6fa;
  --bg-2:#eef1f7;
  --card:#ffffff;
  --ink:#1f2330;
  --muted:#7d8295;
  --border:#e9ebf0;
  --good:#10b981;
  --good-soft:#e8faf3;
  --warn:#f59e0b;
  --warn-soft:#fff8eb;
  --bad:#f43f5e;
  --bad-soft:#fff1f3;
  --shadow:0 10px 28px rgba(31,35,48,.08);
  --radius:18px;
  --tabbar-h:66px;
  --header-h:52px;
}

@media (prefers-color-scheme: dark){
  :root{
    --primary:#6366f1;
    --primary-2:#8b5cf6;
    --accent:#f472b6;
    --bg:#11131a;
    --bg-2:#181a23;
    --card:#1e202b;
    --ink:#f0f1f5;
    --muted:#9ba1b3;
    --border:#2d3041;
    --good:#34d399;
    --good-soft:rgba(52,211,153,.12);
    --warn:#fbbf24;
    --warn-soft:rgba(251,191,36,.12);
    --bad:#fb7185;
    --bad-soft:rgba(251,113,133,.12);
    --shadow:0 10px 30px rgba(0,0,0,.35);
  }
}

*{
  box-sizing:border-box;
  -webkit-tap-highlight-color:transparent;
}
html,body{
  margin:0;
  padding:0;
  overscroll-behavior-y:none; /* 仅对根元素禁用，防止安卓微信下拉露底，同时保留内部滚动 */
}
html{
  background:var(--bg);
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  font-size:15px;
  line-height:1.55;
  background:var(--bg);
  min-height:100dvh;
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-top:env(safe-area-inset-top);
}

.wrap{max-width:560px;margin:0 auto;padding:14px 14px 24px}
.sub{font-size:12px;color:var(--muted)}
.muted{color:var(--muted);font-size:12px}
.empty{color:var(--muted);font-size:13px;text-align:center;padding:24px 8px}

/* ===== 视图切换 ===== */
.view{display:none;min-height:100dvh}
.view.on{display:block;animation:fade .28s cubic-bezier(.2,.8,.2,1)}
#sec-ai.view.on{display:flex;flex-direction:column}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ===== 微信提示条 ===== */
.wechat-tip{
  position:sticky;
  top:0;
  z-index:100;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  color:#fff;
  font-size:13px;
  padding:10px 14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.wechat-tip button{
  background:rgba(255,255,255,.2);
  border:none;
  color:#fff;
  border-radius:50%;
  width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;cursor:pointer;flex:0 0 24px;
}

/* ===== 头部 ===== */
.hd{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin:6px 4px 16px;
  padding-top:env(safe-area-inset-top);
}
.hd h1{font-size:26px;font-weight:800;margin:0;letter-spacing:-.5px}
.hd .date{font-size:12.5px;color:var(--muted)}

/* ===== 卡片 ===== */
.card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;
  margin-bottom:14px;
  border:1px solid var(--border);
}
.card h2{font-size:16px;margin:0 0 12px;font-weight:700;color:var(--ink)}
.card h3{font-size:14px;margin:0 0 10px;color:var(--muted);font-weight:600}
.tag{
  display:inline-block;font-size:11px;padding:3px 9px;border-radius:12px;
  background:linear-gradient(135deg,rgba(79,70,229,.08),rgba(236,72,153,.08));
  color:var(--primary);font-weight:700;margin-left:6px;
}

/* ===== Hero ===== */
.hero{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 55%,var(--accent) 100%);
  color:#fff;border-radius:22px;padding:20px;margin-bottom:14px;
  box-shadow:0 12px 30px rgba(79,70,229,.28);overflow:hidden;
}
.hero .greet{font-size:13px;opacity:.92}
.hero .big{font-size:42px;font-weight:800;line-height:1;margin:8px 0 4px}
.hero .big small{font-size:16px;font-weight:600;opacity:.85}
.hero .meta{font-size:12.5px;opacity:.92}
.hero .row{display:flex;gap:10px;margin-top:16px}
.hero .mini{
  background:rgba(255,255,255,.18);border-radius:14px;padding:10px 8px;flex:1;text-align:center;
  backdrop-filter:blur(4px);
}
.hero .mini .k{font-size:11px;opacity:.9}
.hero .mini .v{font-size:17px;font-weight:700;margin-top:3px}
.progbar{height:8px;background:rgba(255,255,255,.25);border-radius:20px;overflow:hidden;margin-top:14px}
.progbar>i{display:block;height:100%;background:#fff;border-radius:20px;transition:width .6s cubic-bezier(.2,.8,.2,1)}

/* ===== 快捷按钮 ===== */
.quick{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.qbtn{
  background:var(--card);border:none;border-radius:var(--radius);box-shadow:var(--shadow);
  padding:16px 6px;display:flex;flex-direction:column;align-items:center;gap:7px;
  cursor:pointer;font-size:13px;font-weight:600;color:var(--ink);border:1px solid var(--border);
  transition:transform .12s,background .15s;
}
.qbtn:active{transform:scale(.96)}
.qbtn .ico{width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,rgba(79,70,229,.1),rgba(236,72,153,.1));display:flex;align-items:center;justify-content:center;font-size:20px}

/* ===== 统计 ===== */
.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stat{
  background:linear-gradient(160deg,rgba(79,70,229,.05),rgba(236,72,153,.05));
  border-radius:14px;padding:12px;border:1px solid var(--border);
}
.stat .k{font-size:12px;color:var(--muted)}
.stat .v{font-size:20px;font-weight:800;margin-top:2px;color:var(--ink)}
.stat .v small{font-size:12px;font-weight:600;color:var(--muted)}
.pos{color:var(--good)} .neg{color:var(--bad)}

/* ===== 表单 ===== */
label.f{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px;font-weight:600}
input,select,textarea{
  width:100%;padding:13px 14px;border:1.5px solid var(--border);border-radius:13px;
  font-size:16px;background:var(--bg-2);color:var(--ink);font-family:inherit;
  transition:border-color .15s,box-shadow .15s,background .15s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.15);background:var(--card)}
.row{display:flex;gap:10px}.row>*{flex:1;min-width:0}
.btn{
  display:block;width:100%;margin-top:14px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;border:none;border-radius:14px;padding:14px;font-size:16px;font-weight:700;
  cursor:pointer;min-height:50px;box-shadow:0 8px 22px rgba(79,70,229,.26);
  transition:transform .12s,filter .15s;
}
.btn:hover{filter:brightness(1.05)}
.btn:active{transform:scale(.985)}
.btn.ghost{background:var(--card);color:var(--primary);border:1.5px solid var(--border);box-shadow:none}
.btn.sm{display:inline-block;width:auto;padding:10px 16px;font-size:14px;margin:0;min-height:42px;border-radius:12px}
.est{
  margin-top:10px;background:rgba(79,70,229,.08);color:var(--primary);border-radius:12px;
  padding:10px 12px;font-size:13.5px;font-weight:600;
}

/* ===== 列表项 ===== */
.item{
  display:flex;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--border);
}
.item:last-child{border-bottom:none}
.item .pill{
  font-size:11.5px;padding:4px 10px;border-radius:14px;
  background:linear-gradient(135deg,rgba(79,70,229,.08),rgba(236,72,153,.08));
  color:var(--primary);font-weight:700;white-space:nowrap;flex:0 0 auto;
}
.item .pill.run{background:#eef0ff;color:#4f46e5}
.item .pill.stairs{background:var(--good-soft);color:var(--good)}
.item .pill.strength{background:#f3edff;color:#7c3aed}
.item .pill.walk{background:var(--warn-soft);color:var(--warn)}
.item .pill.badm{background:#eef0ff;color:#4f46e5}
.item .meta{flex:1;min-width:0}
.item .meta .t{font-weight:600;font-size:14px;color:var(--ink)}
.item .meta .d{font-size:12px;color:var(--muted);margin-top:1px}
.item .x{color:#c2c6d2;font-size:18px;cursor:pointer;padding:0 4px;min-width:32px;text-align:center}

/* ===== 食物评级 ===== */
.fr{display:flex;gap:10px;align-items:flex-start;padding:11px 12px;border-radius:12px;margin-top:8px}
.fr.good{background:var(--good-soft);color:#0f7a55}
.fr.ok{background:var(--warn-soft);color:#92660a}
.fr.avoid{background:var(--bad-soft);color:#b42318}
.fr .badge{font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:12px;white-space:nowrap;flex:0 0 auto}
.fr.good .badge{background:var(--good);color:#fff}
.fr.ok .badge{background:var(--warn);color:#fff}
.fr.avoid .badge{background:var(--bad);color:#fff}
.fr .ft{font-size:13.5px;line-height:1.5;color:inherit}
.fr .ft b{font-size:14.5px}
.fr .pick{cursor:pointer;text-decoration:underline;font-size:12px;margin-left:6px;opacity:.85}

/* ===== 待办/计划 ===== */
.todo{
  display:flex;align-items:flex-start;gap:10px;padding:13px;border-radius:14px;margin-bottom:10px;font-size:14px;
  border:1px solid transparent;
}
.todo .ic{width:20px;height:20px;flex:0 0 20px;margin-top:1px;stroke:currentColor}
.todo.red{background:var(--bad-soft);color:var(--bad);border-color:rgba(244,63,94,.15)}
.todo.amber{background:var(--warn-soft);color:#b45309;border-color:rgba(245,158,11,.15)}
.todo.teal{background:var(--good-soft);color:#047857;border-color:rgba(16,185,129,.15)}
.todo .body{flex:1;color:inherit}
.todo .body b{display:block;margin-bottom:2px;color:inherit}
.todo .acts{display:flex;gap:7px;margin-top:9px;flex-wrap:wrap}
.todo .acts button{border:none;border-radius:10px;padding:7px 14px;font-size:12.5px;font-weight:700;cursor:pointer;min-height:38px}
.todo .acts .ok{background:var(--primary);color:#fff}
.todo .acts .no{background:var(--card);color:var(--muted);border:1.5px solid var(--border)}

.chk{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid var(--border)}
.chk:last-child{border-bottom:none}
.box{width:24px;height:24px;border-radius:8px;border:2px solid #d3d8e3;flex:0 0 24px;display:flex;align-items:center;justify-content:center;cursor:pointer;background:var(--card)}
.box.on{background:var(--primary);border-color:var(--primary);color:#fff}
.chk .lb{flex:1;font-size:14.5px;color:var(--ink)}
.chk .lb small{display:block;color:var(--muted);font-size:12px}

/* ===== 建议 ===== */
.sug{
  display:flex;gap:10px;padding:13px;border-radius:14px;margin-bottom:10px;font-size:13.5px;line-height:1.6;
  border:1px solid transparent;
}
.sug .ic{width:20px;height:20px;flex:0 0 20px;margin-top:2px}
.sug.warn{background:var(--bad-soft);color:var(--bad);border-color:rgba(244,63,94,.12)}
.sug.info{background:var(--warn-soft);color:#b45309;border-color:rgba(245,158,11,.12)}
.sug.good{background:var(--good-soft);color:#047857;border-color:rgba(16,185,129,.12)}
.sug b{display:block;margin-bottom:3px}

/* ===== 知识卡 ===== */
.knowledge details{border-radius:14px;background:var(--bg-2);padding:0 14px;margin-bottom:10px;border:1px solid var(--border)}
.knowledge summary{padding:14px 0;cursor:pointer;font-weight:700;font-size:14px;list-style:none;color:var(--ink)}
.knowledge summary::-webkit-details-marker{display:none}
.knowledge summary::after{content:"\FF0B";float:right;color:var(--muted);font-weight:400}
.knowledge details[open] summary::after{content:"\FF0D"}
.knowledge .c{padding:0 0 14px;font-size:13.5px;color:var(--muted);line-height:1.7}
.knowledge .c li{margin:6px 0}

/* ===== 图表 ===== */
.chartbox{width:100%;overflow:hidden}
svg{display:block;width:100%;height:auto}

/* ===== TabBar ===== */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;
  background:rgba(255,255,255,.86);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-top:1px solid rgba(0,0,0,.06);
  padding-bottom:env(safe-area-inset-bottom);
  transition:background .2s;
}
@media (prefers-color-scheme: dark){
  .tabbar{background:rgba(30,32,43,.92);border-top-color:rgba(255,255,255,.06)}
}
.tabbar button{
  flex:1;border:none;background:none;padding:7px 0 calc(7px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;align-items:center;gap:3px;
  cursor:pointer;color:var(--muted);font-size:11px;font-weight:600;
  transition:color .15s;
}
.tabbar button .ic{width:24px;height:24px;transition:transform .15s}
.tabbar button.on{color:var(--primary)}
.tabbar button.on .ic{transform:translateY(-1px) scale(1.08)}

/* ===== 弹层/抽屉 ===== */
.overlay{
  position:fixed;inset:0;background:rgba(20,18,35,.5);display:none;align-items:center;justify-content:center;z-index:70;padding:22px;
}
.overlay.on{display:flex;animation:fade .2s ease}
.box2{
  background:var(--card);border-radius:20px;padding:22px;max-width:360px;width:100%;border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.box2 h3{margin:0 0 8px;font-size:18px;font-weight:800;color:var(--ink)}
.box2 p{font-size:13.5px;color:var(--muted);margin:0 0 16px}
.mbtns{display:flex;gap:10px}
.mbtns button{flex:1;padding:12px;border-radius:13px;font-size:14px;font-weight:700;cursor:pointer;border:none;min-height:46px}
.cancel{background:var(--bg-2);color:var(--ink)}
.primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff}

.sheetbg{
  position:fixed;inset:0;background:rgba(20,18,35,.4);z-index:60;opacity:0;pointer-events:none;transition:opacity .25s;
}
.sheetbg.on{opacity:1;pointer-events:auto}
.sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:65;background:var(--card);border-radius:24px 24px 0 0;
  padding:20px 20px calc(20px + env(safe-area-inset-bottom));transform:translateY(105%);transition:transform .3s cubic-bezier(.2,.8,.2,1);
  max-height:88vh;overflow:auto;border-top:1px solid var(--border);
}
.sheet.on{transform:translateY(0)}
.sheet .h{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.sheet h3{margin:0;font-size:18px;font-weight:800;color:var(--ink)}
.sheet .close{background:var(--bg-2);border:none;border-radius:50%;width:32px;height:32px;font-size:16px;color:var(--muted);cursor:pointer}

/* ===== PIN ===== */
.pinwrap{text-align:center}
.pinwrap h3{font-size:20px;margin:0 0 6px;color:var(--ink)}
.pinwrap p{font-size:13px;color:var(--muted);margin:0 0 18px}
.pinwrap input{text-align:center;font-size:28px;letter-spacing:10px;border-radius:14px;font-weight:700}

/* ===== Toast ===== */
.toast{
  position:fixed;left:50%;bottom:calc(var(--tabbar-h) + 24px + env(safe-area-inset-bottom));
  transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:13px;
  font-size:14px;opacity:0;transition:.3s;z-index:90;pointer-events:none;max-width:82%;text-align:center;
}
.toast.on{opacity:1}

/* ===== 聊天 ===== */
#sec-ai{height:calc(100dvh - var(--tabbar-h) - env(safe-area-inset-bottom));background:var(--bg)}
.chat-head{padding:14px 16px 12px;text-align:center;border-bottom:1px solid var(--border);background:rgba(255,255,255,.85);backdrop-filter:blur(10px)}
@media (prefers-color-scheme: dark){ .chat-head{background:rgba(30,32,43,.9)} }
.chat-head .t{font-size:16px;font-weight:800;color:var(--ink)}
.chat-head .s{font-size:12px;color:var(--muted)}
.chat-msgs{flex:1;overflow:auto;padding:14px 14px 6px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:84%;padding:11px 14px;border-radius:18px;font-size:14.5px;line-height:1.6;white-space:pre-wrap;word-break:break-word;box-shadow:var(--shadow)}
.msg .role{font-size:11px;opacity:.6;margin-bottom:3px;display:block}
.msg.user{align-self:flex-end;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border-bottom-right-radius:6px}
.msg.ai{align-self:flex-start;background:var(--card);color:var(--ink);border-bottom-left-radius:6px}
.caps{display:flex;gap:8px;flex-wrap:wrap;padding:8px 14px 4px;flex:0 0 auto}
.cap{
  background:var(--card);border:1.5px solid var(--border);color:var(--primary);border-radius:20px;
  padding:8px 14px;font-size:13px;font-weight:600;cursor:pointer;box-shadow:var(--shadow);
}
.cap:active{transform:scale(.97)}
.chat-input{
  display:flex;gap:8px;padding:10px 14px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--border);
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);flex:0 0 auto;
}
@media (prefers-color-scheme: dark){ .chat-input{background:rgba(30,32,43,.95)} }
.chat-input input{flex:1;border-radius:20px;background:var(--bg);border:1.5px solid transparent}
.chat-input input:focus{background:var(--card);border-color:var(--border)}
.chat-input button{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border:none;border-radius:20px;
  padding:0 18px;font-weight:700;font-size:15px;cursor:pointer;min-height:44px;
}
.typing{display:flex;gap:4px;align-items:center;padding:11px 14px}
.typing span{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--muted);animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.2}30%{opacity:1}}

/* ===== 小节标题+提示 ===== */
.section-hint{font-size:12.5px;color:var(--muted);margin:-8px 0 12px;line-height:1.5}

/* ===== 响应式 ===== */
@media(max-width:480px){
  .hd h1{font-size:23px}
  .hero .big{font-size:36px}
  .card{padding:14px}
}