/* 代练联盟 · mobile-first. One column, bottom tab bar, bottom sheets. */
:root{--bg:#f3f5f4;--card:#fff;--ink:#1f332d;--muted:#75837d;--line:#e2e8e5;--brand:#235b49;--brand-ink:#fff;--brand-soft:#e8f2ec;--brand-line:#c9dfd1;--warn:#9a6420;--warn-soft:#fff3e0;--bad:#b0513f;--bad-soft:#fcebe6;--info:#46679a;--info-soft:#eaf0f8;--ok:#3f7a4f;--ok-soft:#e8f3ea;--radius:16px;--tabbar:64px;
font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--ink);font-synthesis:none;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg)}
body{min-height:100vh;line-height:1.5}
h1,h2,h3,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
button:disabled{opacity:.5;cursor:wait}
a{color:var(--brand)}
small{font-size:12px}
.muted,small.muted{color:var(--muted)}
.pre{white-space:pre-wrap;overflow-wrap:anywhere}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* shell */
.shell{max-width:720px;margin:0 auto;min-height:100vh;padding-bottom:calc(var(--tabbar) + 24px + env(safe-area-inset-bottom))}
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:8px;height:56px;padding:0 16px;padding-top:env(safe-area-inset-top);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.brand{display:flex;align-items:center;gap:10px;font-size:20px}
.logo{width:30px;height:32px;display:grid;place-items:center;background:var(--brand);color:#e6f2bc;font-weight:800;font-size:17px;clip-path:polygon(0 0,100% 0,100% 72%,50% 100%,0 72%)}
.logo.big{width:56px;height:62px;font-size:32px}
.top-title{font-size:17px;flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;font-size:24px;color:var(--ink)}
.icon-btn svg{width:22px;height:22px}
.role-pill{display:flex;gap:6px;align-items:center;padding:6px 12px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-size:14px;font-weight:600}
.role-pill span{font-weight:400;color:var(--muted);font-size:12px}
.main{padding:4px 16px 16px}
svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* tab bar */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:6;background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.tabbar-in{max-width:720px;margin:0 auto;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;height:var(--tabbar)}
.tab{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--muted)}
.tab svg{width:24px;height:24px}
.tab.on{color:var(--brand);font-weight:600}
.badge{position:absolute;top:7px;left:calc(50% + 6px);min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--bad);color:#fff;font-size:11px;font-style:normal;line-height:18px;text-align:center}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:var(--card);font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap;transition:transform .1s}
.btn:active{transform:scale(.98)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.btn.ghost{background:transparent;border-color:transparent;color:var(--brand)}
.btn.danger{color:var(--bad)}
.btn.danger-fill{background:var(--bad);border-color:var(--bad);color:#fff}
.btn.sm{min-height:36px;padding:0 14px;font-size:14px}
.btn.block{display:flex;width:100%}
.link{color:var(--brand);font-size:14px;font-weight:600;padding:8px 0}
.main>.btn.block:first-child{margin:4px 0 12px}

/* chips & segmented */
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips.scroll{flex-wrap:nowrap;overflow-x:auto;margin:0 -16px 10px;padding:2px 16px;scrollbar-width:none}
.chips.scroll::-webkit-scrollbar{display:none}
.chip{display:inline-block;padding:3px 9px;border-radius:999px;background:#eef2f0;color:#5c6c66;font-size:12px;white-space:nowrap}
button.chip{padding:7px 14px;font-size:14px}
.chip.brand{background:var(--brand);color:#fff}
.chip.ok{background:var(--ok-soft);color:var(--ok)}
.chip.warn{background:var(--warn-soft);color:var(--warn)}
.chip.bad{background:var(--bad-soft);color:var(--bad)}
.chip.info{background:var(--info-soft);color:var(--info)}
.seg{display:flex;background:#e6ebe8;border-radius:12px;padding:3px;margin:4px 0 12px}
.seg button{flex:1;min-height:38px;border-radius:9px;font-size:14px;color:var(--muted)}
.seg button.on{background:var(--card);color:var(--ink);font-weight:600;box-shadow:0 1px 3px #0001}

/* list rows */
.row{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:14px;margin-bottom:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}
.row.todo{border-color:var(--brand-line);box-shadow:inset 3px 0 0 var(--brand)}
.row-main{flex:1;min-width:0}
.row-main b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-main small{display:block;color:var(--muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex:none}
.amount{font-weight:700;font-variant-numeric:tabular-nums;color:var(--brand)}
.amount.big{font-size:26px}
.count{color:var(--muted);font-size:13px;margin:4px 2px 8px}
.bar{display:flex;align-items:center;justify-content:space-between}
.group{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin:18px 2px 8px}
.group:first-child{margin-top:4px}
.group span{background:var(--bad);color:#fff;border-radius:9px;padding:0 7px;font-size:12px}
.empty{text-align:center;padding:48px 20px;color:var(--muted);background:var(--card);border:1px dashed var(--line);border-radius:var(--radius)}
.empty p{margin-bottom:14px}
.empty p:last-child{margin:0}

/* filters */
.filters{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:8px}
.filters select,.search{width:100%;min-height:42px;border:1px solid var(--line);border-radius:12px;background:var(--card);padding:0 10px;font-size:15px}
.search{margin-bottom:6px;padding:0 14px}

/* cards & detail */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.card h3{font-size:15px;margin-bottom:10px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.card h3 small{color:var(--muted);font-weight:400}
.card>small.muted{display:block;margin-top:8px}
.hero h1{font-size:21px;line-height:1.35;margin:10px 0 6px}
.price-line{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.price-line small{color:var(--muted)}
.progress{display:flex;gap:4px;margin-top:14px}
.progress span{flex:1;height:5px;border-radius:3px;background:var(--line)}
.progress span.done{background:var(--brand)}
.progress span.now{background:linear-gradient(90deg,var(--brand) 50%,var(--line) 50%)}
.progress-text{display:block;color:var(--muted);margin-top:6px}
.next small{color:var(--muted)}
.next h2{font-size:18px;margin:2px 0 4px}
.next p{color:var(--muted);font-size:14px;white-space:pre-wrap}
.next.todo{background:var(--brand-soft);border-color:var(--brand-line)}
.next.todo small{color:var(--brand);font-weight:600}
.next-actions{display:flex;gap:8px;margin-top:14px}
.next-actions .btn{flex:1}
.next-actions.sticky{position:sticky;bottom:calc(var(--tabbar) + 12px + env(safe-area-inset-bottom));background:var(--bg);padding:8px 0}
.more{margin-top:10px}
.more>summary{cursor:pointer;color:var(--muted);font-size:14px;padding:6px 0;list-style:none}
.more>summary::-webkit-details-marker{display:none}
.more>summary::after{content:' ›';display:inline-block;transition:transform .15s}
.more[open]>summary::after{transform:rotate(90deg)}
.more>div{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px}
.form .more{margin:0 0 14px;padding:4px 14px;background:var(--card);border:1px solid var(--line);border-radius:12px}
.form .more[open]{padding-bottom:4px}
.fold{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px}
.fold>summary{display:flex;align-items:center;gap:8px;padding:15px 16px;font-weight:600;cursor:pointer;list-style:none}
.fold>summary::-webkit-details-marker{display:none}
.fold>summary small{margin-left:auto;color:var(--muted);font-weight:400}
.fold>summary::after{content:'›';color:var(--muted);font-size:20px;line-height:1;transition:transform .15s}
.fold[open]>summary::after{transform:rotate(90deg)}
.fold-body{padding:0 16px 14px}
.fold-body>p{color:var(--muted);font-size:14px;margin-bottom:8px}
.kv{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-top:1px solid #eef2f0;font-size:14px}
.kv:first-child{border-top:0}
.kv>span{color:var(--muted);flex:none}
.kv>p{text-align:right;white-space:pre-wrap;overflow-wrap:anywhere}
.kv.stack{display:block}
.kv.stack>p{text-align:left;margin-top:2px}
.line{padding:10px 0;border-top:1px solid #eef2f0;font-size:14px;display:flex;justify-content:space-between;gap:10px}
.line:first-child{border-top:0}
.line small{display:block;color:var(--muted)}
.line p{margin-top:2px}
.main>.line{background:var(--card);padding:12px 14px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px}
.label{font-size:13px;color:var(--muted);margin:14px 2px 6px}
.stars{color:#d69a2d}
.tip{font-size:13px;color:var(--muted);background:#eef2f0;border-radius:10px;padding:10px 12px;margin:10px 0}
.tip.warn{background:var(--warn-soft);color:var(--warn)}
.error{font-size:14px;color:var(--bad);background:var(--bad-soft);border-radius:10px;padding:10px 12px;margin:10px 0}
.quote{padding:12px 0;border-top:1px solid #eef2f0}
.quote:first-of-type{border-top:0}
.quote-head{display:flex;justify-content:space-between;align-items:center}
.quote p{font-size:14px;margin:2px 0}
.quote .btn{margin-top:8px}
.summary{display:flex;justify-content:space-between;align-items:baseline;padding:4px 0 10px}

/* chat */
.msgs{display:flex;flex-direction:column;gap:8px;max-height:50vh;overflow-y:auto;padding:4px 0 10px}
.bubble{align-self:flex-start;max-width:85%;padding:9px 12px;border-radius:14px 14px 14px 4px;background:#eef2f0;font-size:15px;white-space:pre-wrap;overflow-wrap:anywhere}
.bubble.mine{align-self:flex-end;background:var(--brand-soft);border-radius:14px 14px 4px 14px}
.bubble small{display:block;color:var(--muted);font-size:11px;margin-bottom:2px}
.compose{display:flex;gap:8px}
.compose input{flex:1;min-width:0;min-height:44px;border:1px solid var(--line);border-radius:12px;padding:0 12px;font-size:16px;background:var(--card)}

/* forms */
.form{display:block}
.f{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;font-size:13px;color:var(--muted)}
.f input,.f select,.f textarea{width:100%;min-height:46px;border:1px solid var(--line);border-radius:12px;background:var(--card);padding:10px 12px;font-size:16px;color:var(--ink)}
.f textarea{resize:vertical;line-height:1.5}
.f input[readonly]{background:#f2f5f3}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.grid2>.f{min-width:0}
.choice{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.opt{display:flex;flex-direction:column;gap:2px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--card);cursor:pointer}
.opt input{position:absolute;opacity:0;pointer-events:none}
.opt small{color:var(--muted)}
.opt:has(input:checked){border-color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px var(--brand)}
.check{display:flex;gap:10px;align-items:center;font-size:14px;margin:4px 0 10px}
.check input{width:20px;height:20px}
.rep{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px 0;margin-bottom:10px}
.rep-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.rep .more{border:0;padding:0 0 4px;margin:0}
.switch{display:flex;gap:12px;align-items:flex-start;padding-bottom:6px;cursor:pointer}
.switch input{width:22px;height:22px;flex:none;margin-top:2px;accent-color:var(--brand)}
.switch small{display:block;color:var(--muted)}
.stars-pick{display:flex;gap:6px;margin-bottom:14px}
.stars-pick label{flex:1}
.stars-pick input{position:absolute;opacity:0}
.stars-pick span{display:block;text-align:center;padding:10px 0;border:1px solid var(--line);border-radius:10px;font-size:14px}
.stars-pick input:checked+span{border-color:var(--brand);background:var(--brand-soft);color:var(--brand);font-weight:600}

/* me */
.me-head{display:flex;gap:14px;align-items:center;padding:12px 2px 16px}
.me-head b{font-size:18px;display:block}
.me-head small{color:var(--muted)}
.avatar{width:52px;height:52px;border-radius:50%;background:#e9e3d6;color:#7e6a48;display:grid;place-items:center;font-size:22px;font-weight:700}
.menu{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:16px}
.menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:15px 16px;text-align:left;border-top:1px solid #eef2f0;font-size:15px}
.menu-item:first-child{border-top:0}
.menu-item small{margin-left:auto;color:var(--muted)}
.menu-item svg{width:16px;height:16px;color:var(--muted)}
.foot{text-align:center;color:var(--muted);font-size:12px;margin-top:20px}
.title{font-size:18px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.steps{margin:0 0 16px;padding-left:20px}
.steps li{padding:6px 0}
.steps small{display:block;color:var(--muted)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stats small{color:var(--muted);display:block}
.stats b{font-size:22px;color:var(--brand)}

/* messages */
.msg{display:block;width:100%;text-align:left;padding:14px;margin-bottom:8px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}
.msg p{font-size:14px;color:var(--muted);margin:2px 0 4px;white-space:pre-wrap}
.msg small{color:var(--muted)}
.msg.unread b::before{content:'';display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--bad);margin-right:8px;vertical-align:2px}

/* sheet */
dialog{border:0;padding:0;background:transparent;color:var(--ink);max-width:100vw;max-height:100vh}
dialog::backdrop{background:#10241e80}
dialog[open]{width:100%;max-width:560px;margin:auto auto 0;max-height:90vh;overflow-y:auto;background:var(--card);border-radius:20px 20px 0 0;padding:8px 16px calc(20px + env(safe-area-inset-bottom));animation:up .2s ease-out}
@keyframes up{from{transform:translateY(30px);opacity:.4}}
.sheet-head{display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;background:var(--card);padding:8px 0;z-index:1}
.sheet-head h2{font-size:18px}
dialog .menu{border:0;margin:0}

/* toast */
#toast{position:fixed;left:50%;bottom:calc(var(--tabbar) + 20px + env(safe-area-inset-bottom));transform:translate(-50%,10px);opacity:0;pointer-events:none;transition:.2s;z-index:100;max-width:calc(100vw - 32px);padding:11px 18px;border-radius:12px;background:#1f3a31;color:#fff;font-size:14px;box-shadow:0 6px 24px #0003}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* login */
.login{max-width:420px;margin:0 auto;padding:max(48px,env(safe-area-inset-top)) 20px 40px}
.login-brand{text-align:center;margin-bottom:28px}
.login-brand .logo{margin:0 auto 14px}
.login-brand h1{font-size:26px}
.login-brand p{color:var(--muted);margin-top:6px}
.login>.btn{margin-bottom:10px;justify-content:space-between}
.login .social.wechat{color:#1f7a3c}
.login .social.alipay{color:#1f6fb0}
.login .social small{color:var(--muted);font-weight:400}
.login .more{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px 14px;margin-top:10px}
.login .more .form{padding-top:8px}
.demo{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:8px 0}
.demo .btn{padding:0 6px}
.loading{display:grid;place-items:center;height:100vh;color:var(--muted)}

@media(min-width:720px){
  .main{padding:8px 24px 24px}
  .top{padding:0 24px}
  dialog[open]{margin:auto;border-radius:20px;padding-bottom:20px}
}