:root{
  --bg:#f6f7fb; --surface:#fff; --ink:#1e2433; --ink-2:#5b6579; --ink-3:#8b94a7;
  --line:#e7eaf2; --brand:#4f46e5; --brand-2:#7c3aed; --brand-soft:#eef0ff;
  --ok:#0d9f6e; --ok-soft:#e6f7f0; --warn:#c2730a; --warn-soft:#fff4e2;
  --red:#d64545; --red-soft:#fdecec; --shadow:0 2px 4px rgba(20,28,55,.03),0 12px 32px rgba(20,28,55,.06);
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}
.hidden{display:none !important}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer}
.muted{color:var(--ink-3);margin:0 0 18px}

/* ---------- 登录 ---------- */
.auth-view{display:grid;grid-template-columns:1.05fr .95fr;min-height:100vh}
.auth-brand{background:linear-gradient(150deg,#1b1b3a 0%,#312e81 48%,#5b21b6 100%);color:#fff;padding:64px 64px 48px;display:flex;flex-direction:column;position:relative;overflow:hidden}
.auth-brand::after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:rgba(255,255,255,.055);right:-190px;top:-160px}
.auth-brand::before{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.04);left:-140px;bottom:-120px}
.brand-mark{width:52px;height:52px;border-radius:15px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);display:grid;place-items:center;font-weight:800;letter-spacing:1px;font-size:17px;backdrop-filter:blur(6px);margin-bottom:26px}
.brand-mark.sm{width:38px;height:38px;border-radius:11px;font-size:13px;margin:0;background:var(--brand);border:none;color:#fff}
.auth-brand h1{font-size:40px;margin:0 0 6px;letter-spacing:-1px;position:relative;z-index:1}
.brand-sub{font-size:16px;opacity:.8;margin:0 0 46px;position:relative;z-index:1}
.brand-points{display:flex;flex-direction:column;gap:22px;position:relative;z-index:1}
.bp{display:flex;gap:16px;align-items:flex-start}
.bp-n{font-size:12px;font-weight:700;opacity:.55;letter-spacing:1px;padding-top:3px}
.bp b{display:block;font-size:15px;margin-bottom:2px}
.bp small{display:block;opacity:.66;font-size:13px}
.brand-foot{margin-top:auto;opacity:.5;font-size:13px;position:relative;z-index:1}
.auth-panel{display:grid;place-items:center;padding:40px;background:#fff}
.auth-card{width:100%;max-width:390px}
.auth-tabs{display:flex;gap:6px;background:var(--bg);padding:5px;border-radius:11px;margin-bottom:34px}
.auth-tab{flex:1;border:0;background:transparent;padding:9px;border-radius:8px;color:var(--ink-2);font-weight:600}
.auth-tab.active{background:#fff;color:var(--brand);box-shadow:0 1px 4px rgba(0,0,0,.07)}
.auth-card h2{font-size:26px;margin:0 0 4px;letter-spacing:-.5px}
label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:16px}
input,select,textarea{width:100%;margin-top:7px;padding:11px 13px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);font-size:14px;outline:none;transition:.15s;font-family:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
textarea{resize:vertical;min-height:78px}
.pwd-wrap{position:relative;display:block}
.pwd-wrap input{padding-right:62px}
.pwd-toggle{position:absolute;right:8px;top:calc(50% + 3px);transform:translateY(-50%);border:0;background:transparent;color:var(--brand);font-size:12px;font-weight:600;padding:6px 8px;cursor:pointer;line-height:1.2}
.pwd-toggle:hover{text-decoration:underline}
.auth-note{margin:14px 0 0;font-size:12px;color:var(--ink-2);text-align:center;line-height:1.6}
.auth-hint{margin-top:14px;padding:12px 14px;background:var(--bg);border-radius:9px;font-size:12px;color:var(--ink-2);display:flex;gap:9px;align-items:center}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);flex:none}

/* ---------- 布局 ---------- */
.layout{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
.sidebar{background:var(--surface);border-right:1px solid var(--line);padding:22px 14px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.side-brand{display:flex;align-items:center;gap:11px;padding:0 8px 26px;border-bottom:1px solid var(--line);margin-bottom:20px}
.side-brand strong{display:block;font-size:15px;letter-spacing:-.3px}
.side-brand small{display:block;color:var(--ink-3);font-size:11px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{display:flex;align-items:center;gap:11px;padding:11px 13px;border-radius:9px;color:var(--ink-2);font-weight:500;transition:.15s}
.nav-item:hover{background:var(--bg);color:var(--ink)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:700}
.ni{width:16px;height:16px;flex:none;border-radius:4px;border:2px solid currentColor;opacity:.85;position:relative}
.ni-new::after{content:"";position:absolute;inset:3px;background:currentColor;border-radius:1px;clip-path:polygon(40% 0,60% 0,60% 40%,100% 40%,100% 60%,60% 60%,60% 100%,40% 100%,40% 60%,0 60%,0 40%,40% 40%)}
.ni-lib{border-radius:2px;box-shadow:0 5px 0 -3px currentColor,0 -5px 0 -3px currentColor}
.ni-plan{border-radius:50%;width:15px;height:15px}
.ni-model{border-radius:2px;transform:rotate(45deg)}
.ni-wallet{border-radius:3px;transform:none}
.ni-wallet::after{content:"";position:absolute;left:1px;right:1px;top:4px;height:6px;border-radius:1px;background:currentColor;opacity:.75}
.side-bottom{margin-top:auto}
.side-tip{background:var(--bg);border-radius:10px;padding:13px;font-size:11.5px;color:var(--ink-3);line-height:1.65}
.side-tip b{color:var(--ink-2);font-size:12px}
.side-tip p{margin:5px 0 0}
.content{display:flex;flex-direction:column;min-width:0}
.topbar{height:64px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 30px;position:sticky;top:0;z-index:5}
.crumb{color:var(--ink-3);font-size:13px}
.top-right{display:flex;align-items:center;gap:10px}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:12px;margin-left:6px}
.uname{font-size:13px;font-weight:600}
.page{padding:30px;max-width:1180px;width:100%;margin:0 auto}

/* ---------- 组件 ---------- */
.page-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px;gap:16px;flex-wrap:wrap}
.page-head h2{font-size:24px;margin:0 0 4px;letter-spacing:-.5px}
.page-head p{margin:0;color:var(--ink-3);font-size:13px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.card+.card{margin-top:18px}
.card-title{font-size:15px;font-weight:700;margin:0 0 3px}
.card-sub{color:var(--ink-3);font-size:12px;margin:0 0 20px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 16px}
.form-actions{display:flex;align-items:center;gap:12px;margin-top:8px;flex-wrap:wrap}
.btn{border:1px solid transparent;border-radius:9px;padding:10px 18px;font-size:13.5px;font-weight:600;transition:.15s;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#4338ca;transform:translateY(-1px)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg);color:var(--ink)}
.btn-soft{background:var(--brand-soft);color:var(--brand)}
.btn-soft:hover{background:#e3e6ff}
.btn-sm{padding:6px 12px;font-size:12px}
.btn-block{width:100%;padding:12px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:20px;font-size:11.5px;font-weight:600}
.badge-gray{background:var(--bg);color:var(--ink-2)}
.badge-light{background:var(--brand-soft);color:var(--brand)}
.badge-ok{background:var(--ok-soft);color:var(--ok)}
.badge-warn{background:var(--warn-soft);color:var(--warn)}
.badge-red{background:var(--red-soft);color:var(--red)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;box-shadow:var(--shadow)}
.stat b{display:block;font-size:23px;letter-spacing:-.5px;margin-bottom:2px}
.stat span{color:var(--ink-3);font-size:12px}
.progress-wrap{margin-top:20px}
.progress-top{display:flex;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:9px}
.progress{height:8px;background:var(--bg);border-radius:20px;overflow:hidden}
.progress-bar{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:20px;transition:width .35s ease;width:0}
.log{margin-top:16px;background:#fbfcfe;border:1px solid var(--line);border-radius:10px;padding:14px;max-height:190px;overflow:auto;font-size:12px;color:var(--ink-2);line-height:2}
.log div{border-bottom:1px dashed var(--line);padding:2px 0}
.log div:last-child{border:0}
.novel-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);cursor:pointer;transition:.18s}
.novel-card:hover{transform:translateY(-3px);border-color:#cfd4f7;box-shadow:0 12px 30px rgba(79,70,229,.11)}
.novel-card h3{margin:0 0 6px;font-size:17px}
.novel-meta{color:var(--ink-3);font-size:12px;display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.novel-blurb{color:var(--ink-2);font-size:12.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;min-height:42px}
.novel-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:13px;font-size:12px;color:var(--ink-3)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:3px 9px;font-size:11.5px;color:var(--ink-2)}
.chapter{border:1px solid var(--line);border-radius:10px;margin-bottom:9px;overflow:hidden}
.chapter-head{display:flex;align-items:center;gap:12px;padding:13px 16px;cursor:pointer;background:#fff}
.chapter-head:hover{background:#fbfbfe}
.chapter-idx{width:26px;height:26px;border-radius:7px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:11px;font-weight:700;flex:none}
.chapter-title{font-weight:600;flex:1}
.chapter-body{padding:16px 20px;border-top:1px solid var(--line);background:#fcfcfe;white-space:pre-wrap;line-height:2;color:var(--ink-2);font-size:13.5px;max-height:460px;overflow:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;color:var(--ink-3);font-weight:600;font-size:12px;padding:11px 12px;border-bottom:1px solid var(--line)}
td{padding:12px;border-bottom:1px solid var(--line);color:var(--ink-2)}
tr:last-child td{border-bottom:0}
.empty{text-align:center;padding:60px 20px;color:var(--ink-3)}
.empty b{display:block;color:var(--ink-2);font-size:16px;margin-bottom:6px}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:relative}
.plan.hot{border-color:var(--brand);box-shadow:0 12px 30px rgba(79,70,229,.13)}
.plan-tag{position:absolute;top:-10px;right:16px;background:var(--brand);color:#fff;font-size:10.5px;padding:3px 10px;border-radius:20px;font-weight:700}
.plan h3{margin:0 0 4px;font-size:16px}
.plan .price{font-size:29px;font-weight:800;letter-spacing:-1px;margin:10px 0 2px}
.plan .price small{font-size:13px;font-weight:500;color:var(--ink-3)}
.plan ul{list-style:none;padding:0;margin:16px 0 0;font-size:12.5px;color:var(--ink-2)}
.plan li{padding:5px 0 5px 18px;position:relative}
.plan li::before{content:"";position:absolute;left:2px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--ok)}
.notice{background:var(--warn-soft);border:1px solid #f5dfba;color:#8a5a08;border-radius:10px;padding:13px 16px;font-size:12.5px;line-height:1.7}
.notice b{color:#7a4d05}
.toast{position:fixed;right:26px;bottom:26px;background:#1f2433;color:#fff;padding:13px 20px;border-radius:10px;font-size:13px;box-shadow:0 12px 30px rgba(0,0,0,.22);z-index:99;max-width:380px}
.toast.err{background:#b93a3a}
.kv{display:flex;gap:8px;font-size:12.5px;color:var(--ink-3);align-items:center}
.kv b{color:var(--ink);font-weight:600}
.section-gap{margin-top:18px}

/* ---------- 管理后台 ---------- */
.ni-admin{border-radius:3px}
.ni-admin::after{content:"";position:absolute;inset:2px;opacity:.75;background:linear-gradient(currentColor,currentColor) 0 0/100% 2px no-repeat,linear-gradient(currentColor,currentColor) 0 50%/100% 2px no-repeat,linear-gradient(currentColor,currentColor) 0 100%/100% 2px no-repeat}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.stat small{display:block;color:var(--ink-3);font-size:11px;margin-top:2px}
.billing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 22px;margin-top:12px}
.setting-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:var(--bg);font-size:12.5px}
.setting-row span{display:flex;flex-direction:column;gap:2px}
.setting-row b{color:var(--ink);font-weight:600}
.setting-row small{color:var(--ink-3);font-size:11px;line-height:1.4}
.setting-row input[type=checkbox]{width:16px;height:16px;margin:0;flex:none}
.mono{font-family:ui-monospace,Consolas,monospace;color:var(--ink-3)}
.admin-tabs{display:flex;gap:6px;margin:22px 0 16px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.admin-tab{border:0;background:transparent;padding:10px 16px;font-weight:600;color:var(--ink-3);border-bottom:2px solid transparent;margin-bottom:-1px}
.admin-tab:hover{color:var(--ink)}
.admin-tab.active{color:var(--brand);border-bottom-color:var(--brand)}
.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.toolbar input{width:240px;margin:0}
.table-wrap{overflow-x:auto}
.table-wrap table{min-width:900px}
.mini-input{width:88px;margin:0;padding:6px 8px;font-size:12px;border:1px solid var(--line);border-radius:7px}
.mini-input.wide{width:150px}
.row-actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.btn-xs{padding:5px 10px;font-size:11.5px;border-radius:7px}
.pager{display:flex;gap:10px;align-items:center;margin-top:16px;flex-wrap:wrap}
input[type=checkbox]{width:16px;height:16px;margin:0;accent-color:var(--brand)}

@media(max-width:1000px){
  .grid-4,.stat-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .auth-view{grid-template-columns:1fr}.auth-brand{display:none}
  .layout{grid-template-columns:1fr}.sidebar{position:static;height:auto;flex-direction:row;align-items:center;flex-wrap:wrap;padding:12px}
  .side-brand{border:0;padding:0 10px 0 0;margin:0}.side-nav{flex-direction:row;flex:1}.side-bottom{display:none}
  .nav-item span{display:none}.page{padding:18px}.grid-2,.grid-3,.grid-4,.stat-grid,.form-grid{grid-template-columns:1fr}
  .topbar{padding:0 16px}.uname,.crumb{display:none}
}