:root{
  --bg:#faf9f5;--bg2:#f3f1ea;--card:#ffffff;--card2:#f6f4ee;--border:#e7e3d8;
  --text:#1f1e1d;--muted:#8a857a;--danger:#c04848;--warn:#b07a2a;--ok:#5a8a52;
  --accent:#d97757;--accent-ink:#ffffff;--accent-weak:rgba(217,119,87,.10);
  --radius:14px;--shadow:0 1px 2px rgba(40,35,25,.05),0 4px 16px rgba(40,35,25,.05);
  --serif:Georgia,'Times New Roman','Noto Serif SC','Songti SC',STSong,SimSun,serif;
  font-size:15px;
}
body[data-accent="sage"]{--accent:#788c5d;--accent-weak:rgba(120,140,93,.10)}
body[data-accent="blue"]{--accent:#6a8bad;--accent-weak:rgba(106,139,173,.10)}
body[data-accent="ink"]{--accent:#2d2b28;--accent-weak:rgba(45,43,40,.07)}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);
  -webkit-font-smoothing:antialiased;
}
body.has-bg{background-size:cover;background-position:center;background-attachment:fixed}
body.has-bg::before{content:'';position:fixed;inset:0;background:rgba(20,15,10,.15);z-index:-1}
a{color:var(--accent);text-decoration:none}
button{font-family:inherit}
input,select,textarea{
  width:100%;background:#fff;border:1px solid var(--border);color:var(--text);
  border-radius:10px;padding:11px 13px;font-size:14px;outline:none;transition:border .15s,box-shadow .15s;
}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}
label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
::placeholder{color:#b5b0a4}

/* layout */
#app{min-height:100%}
.layout{display:flex;min-height:100vh}
.sidebar{
  width:232px;flex-shrink:0;border-right:1px solid var(--border);
  background:var(--bg);display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh;z-index:60;
}
.brand{display:flex;align-items:center;gap:10px;padding:22px 20px;font-weight:700;font-size:17px;font-family:var(--serif)}
.brand img{width:30px;border-radius:8px}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}
.nav{flex:1;padding:6px 12px;overflow-y:auto}
.nav a{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;
  color:var(--muted);font-size:14px;margin-bottom:2px;transition:.15s;
}
.nav a:hover{color:var(--text);background:var(--bg2)}
.nav a.active{color:var(--accent);background:var(--accent-weak);font-weight:600}
.nav .ic{width:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nav .ic svg{display:block}
.nav-group{font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.5px;padding:14px 12px 6px;text-transform:uppercase}
.sidebar .foot{padding:14px 20px;border-top:1px solid var(--border);font-size:12px;color:var(--muted)}
.main{flex:1;min-width:0;padding:30px 34px 70px;max-width:1060px;margin:0 auto;width:100%}
.page-title{
  font-size:24px;font-weight:700;margin-bottom:20px;font-family:var(--serif);letter-spacing:.2px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}

/* mobile topbar + drawer */
.topbar{display:none}
.drawer-mask{display:none}
@media (max-width:860px){
  .topbar{
    display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:50;
    background:rgba(250,249,245,.9);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--border);padding:13px 16px;
  }
  .topbar .menu-btn{
    background:none;border:none;cursor:pointer;padding:4px;display:flex;flex-direction:column;gap:4.5px;
  }
  .topbar .menu-btn i{display:block;width:20px;height:2px;background:var(--text);border-radius:2px}
  .topbar .t-title{font-family:var(--serif);font-weight:700;font-size:16px}
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;height:100vh;width:262px;
    transform:translateX(-103%);transition:transform .25s ease;
    box-shadow:0 0 40px rgba(40,35,25,.15);
  }
  body.drawer-open .sidebar{transform:none}
  .drawer-mask{
    display:block;position:fixed;inset:0;background:rgba(30,28,24,.35);z-index:55;
    opacity:0;pointer-events:none;transition:opacity .25s;
  }
  body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
  body.drawer-open{overflow:hidden}
}

/* cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px;box-shadow:var(--shadow)}
.card h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.muted{color:var(--muted);font-size:13px}
.small{font-size:12px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.sp{flex:1}
hr{border:none;border-top:1px solid var(--border);margin:14px 0}
code{background:var(--bg2);padding:2px 7px;border-radius:6px;font-size:13px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:var(--accent-ink);border:none;border-radius:10px;
  padding:11px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:.15s;white-space:nowrap;
}
.btn:hover{filter:brightness(.94)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.lg{padding:14px 22px;font-size:15px;width:100%}
.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--border)}
.btn.ghost:hover{background:var(--bg2);filter:none}
.btn.danger{background:#fff;color:var(--danger);border:1px solid #e5c5c5}
.btn.danger:hover{background:#faf1f1;filter:none}
.btn.sm{padding:7px 12px;font-size:13px;border-radius:8px}
.spinner{
  width:15px;height:15px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;
  border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0;
}
.btn.ghost .spinner,.btn.danger .spinner,.spinner.lite{border-color:rgba(0,0,0,.12);border-top-color:var(--accent)}
@keyframes spin{to{transform:rotate(360deg)}}

/* global loading overlay */
.g-loading{position:fixed;inset:0;z-index:9999;background:rgba(31,30,29,.35);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px)}
.g-loading .g-spin{width:32px;height:32px;border:3px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}

/* progress */
.bar{height:8px;background:var(--bg2);border-radius:6px;overflow:hidden;margin:8px 0 6px}
.bar i{display:block;height:100%;background:var(--accent);border-radius:6px;transition:width .4s}
.bar i.warn{background:var(--danger)}

/* badges & tables */
.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:600}
.b-ok{background:rgba(90,138,82,.12);color:var(--ok)}
.b-warn{background:rgba(176,122,42,.12);color:var(--warn)}
.b-danger{background:rgba(192,72,72,.1);color:var(--danger)}
.b-muted{background:var(--bg2);color:var(--muted)}
.b-accent{background:var(--accent-weak);color:var(--accent)}
table{width:100%;border-collapse:collapse;font-size:14px}
th{color:var(--muted);font-weight:500;font-size:12px;text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}
td{padding:11px 10px;border-bottom:1px solid var(--border);vertical-align:middle}
tr:last-child td{border-bottom:none}
.tbl-wrap{overflow-x:auto}
.empty{padding:40px 0;text-align:center;color:var(--muted);font-size:14px}

/* plan cards */
.plans{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.plan{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;transition:.18s;box-shadow:var(--shadow)}
.plan:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 24px rgba(40,35,25,.09)}
.plan .name{font-size:18px;font-weight:700;margin-bottom:4px}
.plan .price{font-size:27px;font-weight:800;color:var(--accent);margin:10px 0 2px}
.plan .price span{font-size:13px;color:var(--muted);font-weight:400}
.plan .content{font-size:13px;color:var(--muted);line-height:1.9;flex:1;margin:10px 0}
.plan .content ul{padding-left:18px}
.period-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:6px 0 14px}
.period{border:1px solid var(--border);border-radius:10px;padding:12px;cursor:pointer;background:#fff;transition:.15s}
.period.sel{border-color:var(--accent);background:var(--accent-weak)}
.period .p-name{font-size:13px;color:var(--muted)}
.period .p-price{font-size:16px;font-weight:700;margin-top:3px}

/* payment */
.paym{display:flex;align-items:center;gap:12px;border:1px solid var(--border);background:#fff;border-radius:10px;padding:13px;cursor:pointer;margin-bottom:10px;transition:.15s}
.paym.sel{border-color:var(--accent);background:var(--accent-weak)}
.paym img{width:26px;height:26px;border-radius:6px;object-fit:contain}
.qr-box{display:flex;flex-direction:column;align-items:center;gap:12px;padding:18px 0}
.qr-box .qr{background:#fff;border:1px solid var(--border);padding:12px;border-radius:12px}
.qr-box .qr img,.qr-box .qr canvas{display:block}
.pulse{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}
.pulse::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 1.2s ease infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}

/* tickets chat */
.chat{display:flex;flex-direction:column;gap:12px;max-height:480px;overflow-y:auto;padding:4px 2px}
.msg{max-width:78%;padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word}
.msg.me{align-self:flex-end;background:var(--accent-weak);border:1px solid var(--accent);border-radius:12px 12px 2px 12px}
.msg.admin{align-self:flex-start;background:var(--bg2);border:1px solid var(--border);border-radius:12px 12px 12px 2px}
.msg .t{font-size:11px;color:var(--muted);margin-top:5px}

/* modal & toast */
.modal-mask{position:fixed;inset:0;background:rgba(30,28,24,.4);backdrop-filter:blur(2px);z-index:70;display:flex;align-items:center;justify-content:center;padding:18px}
.modal{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:24px;width:100%;max-width:460px;max-height:86vh;overflow-y:auto;animation:up .18s ease;box-shadow:0 20px 60px rgba(40,35,25,.18)}
.modal.wide{max-width:640px}
.modal h2{font-size:18px;margin-bottom:14px;font-family:var(--serif)}
@keyframes up{from{transform:translateY(14px);opacity:0}to{transform:none;opacity:1}}
#toasts{position:fixed;top:18px;left:50%;transform:translateX(-50%);z-index:99;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{background:#2d2b28;color:#faf9f5;border-radius:10px;padding:11px 18px;font-size:14px;box-shadow:0 8px 30px rgba(40,35,25,.25);animation:up .2s ease;max-width:90vw}
.toast.error{background:#7c2f2f}

/* auth */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.auth{width:100%;max-width:400px;background:rgba(255,255,255,.45);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.6);border-radius:18px;padding:32px;box-shadow:0 8px 32px rgba(40,35,25,.18)}
.auth .logo{text-align:center;margin-bottom:22px;font-size:22px;font-weight:800;font-family:var(--serif)}
.auth .logo img{width:52px;border-radius:12px;margin-bottom:8px}
.auth input,.auth select{background:rgba(255,255,255,.55);border-color:rgba(255,255,255,.7)}
.auth .tabs{background:rgba(255,255,255,.3)}
.auth .tabs button.active{background:rgba(255,255,255,.7)}
.tabs{display:flex;background:var(--bg2);border-radius:10px;padding:4px;margin-bottom:18px}
.tabs button{flex:1;border:none;background:none;color:var(--muted);padding:9px;border-radius:8px;cursor:pointer;font-size:14px}
.tabs button.active{background:#fff;color:var(--text);font-weight:600;box-shadow:0 1px 3px rgba(40,35,25,.08)}
.code-row{display:flex;gap:10px}
.code-row input{flex:1}
.code-row .btn{flex-shrink:0}

/* stat tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:16px}
.tile{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;transition:.15s;box-shadow:var(--shadow)}
.tile:hover{border-color:var(--accent)}
.tile .v{font-size:25px;font-weight:800;margin-top:4px;font-family:var(--serif)}
.tile .v.accent{color:var(--accent)}
.tile .v small{font-size:13px;color:var(--muted);font-weight:400}
.tile .note{font-size:11px;color:var(--muted);margin-top:2px}

/* banner */
.banner{
  position:relative;border-radius:var(--radius);overflow:hidden;padding:28px 24px;margin-bottom:16px;
  background:#2d2b28;color:#faf9f5;cursor:pointer;min-height:120px;display:flex;flex-direction:column;justify-content:flex-end;
}
.banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.45}
.banner-title{font-size:18px;font-weight:700;font-family:var(--serif);position:relative;margin-top:4px}
.banner-date{font-size:12px;opacity:.7;position:relative;margin-top:4px}
.banner .badge{position:relative;width:fit-content}

/* shortcuts */
.shortcut{
  display:flex;align-items:center;justify-content:space-between;padding:14px 0;
  border-bottom:1px solid var(--border);cursor:pointer;transition:.15s;
}
.shortcut:last-child{border-bottom:none}
.shortcut:hover .s-title{color:var(--accent)}
.s-title{font-size:14px;font-weight:600;margin-bottom:2px}
.s-icon{color:var(--muted);flex-shrink:0}

/* subscribe grid */
.sub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.sub-item{
  display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;
  border:1px solid var(--border);border-radius:10px;cursor:pointer;transition:.15s;
  font-size:12px;font-weight:500;color:var(--text);background:#fff;
}
.sub-item:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-weak)}
.sub-item svg{color:var(--text)}
.sub-item:hover svg{color:var(--accent)}
.sub-item .app-ico{width:30px;height:30px;border-radius:8px;object-fit:cover;display:block}

/* apple account */
.apple-account{display:flex;flex-direction:column;gap:10px}
.apple-row{display:flex;align-items:center;gap:10px;background:var(--bg2);border-radius:10px;padding:12px 14px}
.apple-label{font-size:13px;color:var(--muted);flex-shrink:0;width:32px}
.apple-val{flex:1;font-size:14px;word-break:break-all;font-family:monospace;color:var(--text)}
.apple-row .btn{flex-shrink:0}

/* knowledge */
.kb-cat{font-size:13px;color:var(--muted);margin:18px 0 8px;font-weight:600;letter-spacing:.5px}
.kb-item{display:flex;justify-content:space-between;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:13px 16px;margin-bottom:8px;cursor:pointer;font-size:14px;box-shadow:var(--shadow)}
.kb-item:hover{border-color:var(--accent)}
.article{line-height:1.85;font-size:14.5px}
.article img{max-width:100%;border-radius:10px}
.article pre{background:var(--bg2);padding:12px;border-radius:10px;overflow-x:auto;font-size:13px}
.article h1,.article h2,.article h3{margin:16px 0 8px;font-family:var(--serif)}
.article p,.article ul,.article ol{margin:8px 0}
.article ul,.article ol{padding-left:22px}
.article table{margin:10px 0}

/* ai chat bubble */
#ai-bubble{position:fixed;bottom:24px;right:24px;z-index:999;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
#ai-btn{width:52px;height:52px;border-radius:50%;background:none;border:none;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.25);display:flex;align-items:center;justify-content:center;padding:0;overflow:hidden;transition:transform .15s}
#ai-btn:hover{transform:scale(1.08)}
#ai-panel{width:420px;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:0 8px 32px rgba(0,0,0,.2);display:flex;flex-direction:column;overflow:hidden;max-height:580px;animation:slideUp .2s ease}
@keyframes slideUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
#ai-panel.hidden{display:none}
.ai-header{padding:14px 16px;border-bottom:1px solid var(--border);font-weight:600;font-size:14px;display:flex;justify-content:space-between;align-items:center}
.ai-header span{font-size:18px;cursor:pointer;color:var(--muted);line-height:1}
#ai-messages{flex:1;overflow-y:auto;padding:12px 14px;display:flex;flex-direction:column;gap:10px;min-height:200px}
.ai-msg{max-width:85%;padding:9px 12px;border-radius:12px;font-size:13.5px;line-height:1.55;word-break:break-word}
.ai-msg.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}
.ai-msg.bot{align-self:flex-start;background:var(--bg2);color:var(--text);border-bottom-left-radius:4px;max-width:92%}
.ai-msg.bot p{margin:0 0 6px}.ai-msg.bot p:last-child{margin:0}
.ai-msg.bot ul,.ai-msg.bot ol{margin:4px 0;padding-left:18px}
.ai-msg.bot li{margin:2px 0}
.ai-msg.bot table{border-collapse:collapse;font-size:12.5px;margin:6px 0;width:100%}
.ai-msg.bot th,.ai-msg.bot td{border:1px solid var(--border);padding:4px 8px;text-align:left}
.ai-msg.bot th{background:var(--bg);font-weight:600}
.ai-msg.bot strong{font-weight:600}
.ai-msg.bot code{background:var(--bg);padding:1px 4px;border-radius:4px;font-size:12px}
.ai-msg.thinking{color:var(--muted);font-style:italic}
.ai-footer{padding:10px 12px;border-top:1px solid var(--border);display:flex;gap:8px}
#ai-input{flex:1;background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:8px 12px;font-size:13px;color:var(--text);outline:none;resize:none;font-family:inherit}
#ai-input:focus{border-color:var(--accent)}
#ai-send{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:8px 14px;cursor:pointer;font-size:13px;white-space:nowrap}
#ai-send:disabled{opacity:.5;cursor:default}
@media(max-width:480px){#ai-panel{width:calc(100vw - 32px)}}

@media (max-width:860px){
  .main{padding:20px 16px 70px}
  .grid2{grid-template-columns:1fr}
  .tiles{grid-template-columns:1fr 1fr}
  .page-title{font-size:20px}
}