:root{
  --paper:#FBF8F0;--card:#fff;
  --t1:#37424E;--t2:#6E7A87;--t3:#A6AEB7;--bd:#EAE5D9;
  --blue:#5C7FA3;--blueD:#44607E;--blueL:#EBF1F6;
  --gold:#C29A4C;--goldL:#F7EFDD;--mint:#5E9B86;--rose:#C0654A;
  --tab-h:62px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',sans-serif;
  background:#EFEDE6;color:var(--t1);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
input,textarea,select,button{font-family:inherit;font-size:inherit;color:inherit}
button{border:none;background:none;cursor:pointer}

.app{max-width:480px;margin:0 auto;min-height:100vh;background:var(--paper);position:relative;
     box-shadow:0 0 40px rgba(80,90,110,.12);overflow-x:hidden}
.app.has-tab{padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom,0px))}
.pad{padding:0 16px}
.sky{background:linear-gradient(172deg,#E7EDF3 0%,#F4F1E9 52%,var(--paper) 100%);padding-bottom:2px}
.sky-plain{background:#fff;border-bottom:1px solid var(--bd)}

/* 导航 */
.nb{height:48px;display:flex;align-items:center;padding:0 12px;gap:8px;position:relative}
.nb .bk{width:30px;height:30px;display:grid;place-items:center;font-size:20px;color:var(--t1)}
.nb .ti{flex:1;text-align:center;font-size:17px;font-weight:600}
.nb .rt{font-size:13px;color:var(--t2);min-width:30px;text-align:right}
.nb .bk+.ti{margin-right:30px}

/* 底部 tab */
.tabbar{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:480px;
  height:calc(var(--tab-h) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);
  background:rgba(255,255,255,.97);border-top:1px solid var(--bd);display:flex;z-index:50;backdrop-filter:blur(10px)}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:#A9B0B8}
.tabbar a.on{color:var(--blue);font-weight:600}
.tabbar svg{width:22px;height:22px;opacity:.6}
.tabbar a.on svg{opacity:1}

/* 通用 */
.card{background:var(--card);border-radius:14px;padding:14px;box-shadow:0 3px 14px -8px rgba(80,95,110,.25)}
.row{display:flex;align-items:center;gap:10px}
.col{display:flex;flex-direction:column}
.between{justify-content:space-between}
.g6{gap:6px}.g8{gap:8px}.g10{gap:10px}.g12{gap:12px}
.mt6{margin-top:6px}.mt8{margin-top:8px}.mt10{margin-top:10px}.mt12{margin-top:12px}
.mt14{margin-top:14px}.mt18{margin-top:18px}.mt22{margin-top:22px}
.t2{color:var(--t2)}.t3{color:var(--t3)}.gold{color:var(--gold)}.blue{color:var(--blue)}
.f10{font-size:10px}.f11{font-size:11px}.f12{font-size:12px}.f13{font-size:13px}
.f15{font-size:15px}.f16{font-size:16px}.f18{font-size:18px}.f22{font-size:22px}
.b{font-weight:600}.bb{font-weight:700}
.flex1{flex:1;min-width:0}
.ell{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.center{text-align:center}
.hr{height:1px;background:var(--bd)}

.sec{font-size:16px;font-weight:600;display:flex;align-items:center;gap:8px}
.sec::before{content:"";width:2.5px;height:15px;border-radius:2px;background:var(--gold)}
.more{margin-left:auto;font-size:11.5px;color:var(--t3);font-weight:400}

.pill{display:inline-block;font-size:10.5px;padding:3px 7px;border-radius:5px;background:var(--blueL);color:var(--blue)}
.pill.gd{background:var(--goldL);color:#9C7A2C}
.pill.gy{background:#F1EFE9;color:#8E958F}
.pill.mt{background:#E5F1EC;color:#3F7F6A}
.pill.rs{background:#FAEBE6;color:var(--rose)}

.btn{display:grid;place-items:center;height:46px;border-radius:23px;font-size:15px;font-weight:600;
  background:linear-gradient(94deg,#6A8CAF,#4E7093);color:#fff;box-shadow:0 8px 18px -11px rgba(68,96,126,.95);width:100%}
.btn.gold{background:linear-gradient(94deg,#D2AE63,#BE9445);box-shadow:0 8px 18px -11px rgba(190,148,69,.95)}
.btn.ghost{background:#fff;color:var(--blueD);border:1px solid #CFDAE4;box-shadow:none}
.btn.off{background:#E7E3D9;color:#AFB4AC;box-shadow:none;pointer-events:none}
.btn.sm{height:32px;border-radius:16px;font-size:12.5px;padding:0 14px;width:auto;display:inline-grid}
.btn.xs{height:27px;border-radius:14px;font-size:11.5px;padding:0 11px;width:auto;display:inline-grid}

.thumb{border-radius:11px;background:linear-gradient(150deg,#DCE5EE,#F1EADA);flex:0 0 auto;
  display:grid;place-items:center;color:#fff;font-weight:600;overflow:hidden}
.avatar{border-radius:50%;background:linear-gradient(140deg,#C3D2DF,#E6E0D0);flex:0 0 auto;
  display:grid;place-items:center;color:#fff;font-weight:600;font-size:13px}
.bar{height:5px;border-radius:3px;background:#EBE7DC;overflow:hidden}
.bar i{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg,#8FAAC4,#5C7FA3)}

.note{background:#FBF3E3;border:1px solid #EEDFBE;color:#8A6A22;border-radius:10px;padding:9px 11px;font-size:11.5px;line-height:1.65}
.note.bl{background:#EDF2F7;border-color:#D3E0EA;color:#456682}
.note.gr{background:#E9F3EE;border-color:#C9E3D7;color:#3B7A64}
.note.rs{background:#FAEDE8;border-color:#EED2C6;color:#A9543A}

.dock{position:sticky;bottom:0;background:rgba(255,255,255,.97);border-top:1px solid var(--bd);
  padding:11px 16px calc(16px + env(safe-area-inset-bottom,0px));z-index:20;backdrop-filter:blur(8px)}
.dock.with-tab{bottom:var(--tab-h)}

/* 表单 */
.field{margin-top:14px}
.field label{display:block;font-size:12px;color:var(--t2);margin-bottom:6px}
.field .inp{width:100%;border:none;border-bottom:1px solid var(--bd);background:transparent;
  padding:6px 0 9px;font-size:16px;outline:none}
.field .inp:focus{border-color:var(--blue)}
.box{width:100%;border:1px solid var(--bd);border-radius:10px;background:#FCFBF6;padding:11px;
  font-size:13px;outline:none;resize:vertical}
.check{display:flex;align-items:flex-start;gap:7px;font-size:11.5px;color:var(--t2);line-height:1.6}
.check input{margin-top:2px;accent-color:var(--blue)}

.chip{border:1px solid var(--bd);background:#fff;border-radius:14px;padding:6px 13px;font-size:12.5px;color:#4C5763;display:inline-block}
.chip.on{border-color:var(--blue);background:var(--blueL);color:var(--blueD);font-weight:600}

/* 提示 */
.flash{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:200;
  background:rgba(55,66,78,.94);color:#fff;padding:10px 18px;border-radius:22px;font-size:13px;
  box-shadow:0 10px 24px -12px rgba(0,0,0,.6);max-width:88%;text-align:center;animation:pop .25s ease}
.flash.err{background:rgba(180,80,58,.95)}
@keyframes pop{from{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%,0)}}

/* 课程卡 */
.course-card{display:flex;gap:12px;padding:12px}
.course-card .thumb{width:106px;height:78px}
.course-card .info{flex:1;display:flex;flex-direction:column;justify-content:space-between;min-width:0}
.price{font-size:19px;font-weight:700;color:var(--gold)}
.origin{font-size:11px;color:var(--t3);text-decoration:line-through}

/* 聊天 */
.chat{padding:12px 16px 16px;display:flex;flex-direction:column;gap:12px}
.bubble{max-width:74%;padding:10px 13px;font-size:13.5px;line-height:1.7;border-radius:3px 15px 15px 15px;
  background:#fff;box-shadow:0 3px 12px -8px rgba(80,95,110,.5)}
.msg{display:flex;gap:8px;align-items:flex-start}
.msg.me{flex-direction:row-reverse}
.msg.me .bubble{border-radius:15px 3px 15px 15px;background:linear-gradient(94deg,#6A8CAF,#4E7093);color:#fff;box-shadow:none}

/* 播放器 */
.player{background:linear-gradient(160deg,#44607E,#5C7FA3 58%,#7E9AB4);color:#fff;padding:0 0 18px}
.player .disc{width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.14);
  display:grid;place-items:center;margin:8px auto 0;box-shadow:0 0 0 8px rgba(255,255,255,.07)}
.player .bar{background:rgba(255,255,255,.24)}
.player .bar i{background:#F0E2C4}
.ctrl{display:flex;align-items:center;justify-content:center;gap:26px;margin-top:14px}
.ctrl .play{width:52px;height:52px;border-radius:50%;background:#fff;color:#5C7FA3;display:grid;place-items:center;font-size:18px}

/* 海报 */
.poster-wrap{background:#3A4550;min-height:100vh;padding-bottom:120px}
.poster{width:86%;max-width:330px;margin:0 auto;background:#FBF9F3;border-radius:14px;overflow:hidden;
  box-shadow:0 18px 40px -18px rgba(0,0,0,.75)}
.poster .top{height:210px;position:relative;background:linear-gradient(150deg,#DCE6EF,#F2EADA 60%,#E4EDE7)}
.poster .vt{position:absolute;left:16px;top:20px;writing-mode:vertical-rl;font-size:19px;font-weight:600;
  letter-spacing:4px;color:#44607E;line-height:1.6}
.qr{width:56px;height:56px;background:#fff;border:1px solid var(--bd);border-radius:6px;padding:3px;flex:0 0 auto}
.qr img{width:100%;height:100%;object-fit:contain}

table.simple{width:100%;border-collapse:collapse;font-size:12.5px}
table.simple td{padding:9px 0;border-bottom:1px solid #F2EFE6}
table.simple tr:last-child td{border-bottom:none}

/* ================= V3.4 追加 ================= */
:root{--tab-h:60px}
.tabbar a{font-size:9.5px}
.tabbar svg{width:21px;height:21px}
.blk{display:flex;flex-direction:column;align-items:center;gap:7px}
.blk .ic{width:44px;height:44px;border-radius:15px;display:grid;place-items:center}
.f9{font-size:9px}.f14{font-size:14px}.f19{font-size:19px}.f24{font-size:24px}
.g4{gap:4px}.g11{gap:11px}.mt4{margin-top:4px}.mt16{margin-top:16px}.mt20{margin-top:20px}
.rose{color:var(--rose)}.mint{color:var(--mint)}
.ic-blue{background:linear-gradient(150deg,#DCE5EE,#EEF3F8);color:#5C7FA3}
.ic-gold{background:linear-gradient(150deg,#F5E6D6,#FBF2E4);color:#C29A4C}
.ic-purple{background:linear-gradient(150deg,#E7E0F0,#F3EFF9);color:#7C6BA8}
.ic-mint{background:linear-gradient(150deg,#D9EBE2,#EAF4EF);color:#5E9B86}
.ic-rose{background:linear-gradient(150deg,#EFDFDA,#FAEDE8);color:#C0654A}
.ic-sand{background:linear-gradient(150deg,#F0E4CA,#FAF3E5);color:#9C7A2C}
.tone-gold{background:linear-gradient(135deg,#FBF1DC,#FDF8EC);color:#9C7A2C}
.tone-mint{background:linear-gradient(135deg,#E5F0EA,#F2F8F5);color:#3F7F6A}
.tone-rose{background:linear-gradient(135deg,#F7E6EC,#FCF2F5);color:#B05C78}
.tone-blue{background:linear-gradient(135deg,#E2EBF6,#F1F5FA);color:#44607E}
.tone-purple{background:linear-gradient(135deg,#EFEAF6,#F7F3FB);color:#6B5C8C}
.tabs{display:flex;gap:18px;padding:0 16px;background:#fff;border-bottom:1px solid var(--bd);overflow-x:auto}
.tabs a{padding:10px 0;font-size:13px;color:var(--t2);white-space:nowrap}
.tabs a.on{color:var(--gold);font-weight:600;border-bottom:2px solid var(--gold)}
.hero{padding:12px 16px 14px}
.hero h1{font-size:19px;font-weight:700;margin:0}
.hero p{font-size:10.5px;margin:6px 0 0;opacity:.75}
.ln2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge{position:absolute;right:8px;top:-4px;background:var(--rose);color:#fff;
  font-size:8.5px;padding:0 5px;border-radius:7px}
.timeline{position:relative;padding-left:20px}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:8px;width:1.5px;background:var(--bd)}
.tl-dot{position:absolute;left:-20px;top:4px;width:11px;height:11px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 3px rgba(194,154,76,.18)}
.md-body{font-size:13px;line-height:1.9}
.blur{filter:blur(3.5px);opacity:.5;user-select:none}