:root{
  --ink:#1b2a41; --ink2:#2c3e50; --orange:#ff7a45; --orange-d:#ef5f28;
  --orange-l:#fff2ec; --bg:#f6f7f9; --card:#fff; --line:#e6e9ef;
  --muted:#7b8798; --green:#1f9d6b; --red:#e0483c; --blue:#2f6fd0;
  --radius:14px; --radius-s:9px; --shadow:0 2px 14px rgba(27,42,65,.06);
  --shadow-lg:0 16px 48px rgba(27,42,65,.14);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.hidden{display:none !important}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1240px;margin:0 auto;height:64px;padding:0 24px;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.4px;white-space:nowrap}
.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--orange),#ff9f6e);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:900;box-shadow:0 4px 12px rgba(255,122,69,.3)}
.brand span{color:var(--orange)}
.nav-links{display:flex;gap:26px;flex:1}
.nav-links a{color:#56637a;font-weight:600;cursor:pointer;transition:.15s}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-actions{display:flex;align-items:center;gap:12px}
.quota-chip{display:inline-flex;align-items:center;gap:6px;background:var(--orange-l);color:var(--orange-d);border:1px solid #ffd9c6;padding:5px 12px;border-radius:999px;font-weight:700;font-size:12.5px;white-space:nowrap}
.user-chip{display:inline-flex;align-items:center;gap:8px;color:var(--ink2);font-weight:600;max-width:200px}
.user-avatar{width:28px;height:28px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700}
.link-btn{border:0;background:none;color:var(--muted);cursor:pointer;padding:4px;font-size:13px}
.link-btn:hover{color:var(--orange-d)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;border-radius:var(--radius-s);padding:9px 18px;font-weight:700;cursor:pointer;transition:.16s;white-space:nowrap;background:#eef1f5;color:var(--ink2)}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-primary{background:linear-gradient(135deg,var(--orange),#ff9563);color:#fff;box-shadow:0 4px 14px rgba(255,122,69,.28)}
.btn-primary:hover{box-shadow:0 6px 18px rgba(255,122,69,.38)}
.btn-dark{background:var(--ink);color:#fff}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink2)}
.btn-outline:hover{border-color:var(--orange);color:var(--orange-d)}
.btn-ghost{background:transparent;color:var(--muted)}
.btn-ghost:hover{color:var(--orange-d);background:var(--orange-l)}
.btn-sm{padding:6px 12px;font-size:12.5px;border-radius:7px}
.btn-lg{padding:13px 28px;font-size:15px;border-radius:11px}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,#fff 0%,#fbfcfe 100%);border-bottom:1px solid var(--line);overflow:hidden}
.hero-inner{max-width:1240px;margin:0 auto;padding:76px 24px 70px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--orange-l);color:var(--orange-d);border:1px solid #ffd9c6;border-radius:999px;padding:6px 14px;font-size:12.5px;font-weight:700;margin-bottom:22px}
.hero h1{font-size:47px;line-height:1.22;letter-spacing:-1.6px;margin:0 0 20px;font-weight:900}
.hero h1 em{font-style:normal;color:var(--orange);position:relative}
.hero p{font-size:16.5px;color:#5f6c80;margin:0 0 30px;max-width:520px;line-height:1.85}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-meta{margin-top:34px;display:flex;gap:26px;color:var(--muted);font-size:12.5px}
.hero-meta b{display:block;color:var(--ink);font-size:20px;font-weight:800;letter-spacing:-.5px}
.hero-visual{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);padding:20px;position:relative;transform:rotate(1deg)}
.hero-visual .hv-bar{height:10px;border-radius:6px;background:#eef1f5;margin-bottom:14px;width:40%}
.hero-visual .hv-title{font-size:22px;font-weight:800;margin:0 0 4px;letter-spacing:-.5px}
.hero-visual .hv-sub{font-size:12px;color:var(--muted);margin-bottom:18px}
.hv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.hv-card{border:1px solid var(--line);border-radius:10px;padding:14px 12px;background:#fcfdff}
.hv-card i{display:block;width:26px;height:26px;border-radius:7px;background:var(--orange-l);color:var(--orange-d);font-style:normal;text-align:center;line-height:26px;font-weight:800;margin-bottom:9px}
.hv-card b{display:block;font-size:13px;margin-bottom:3px}
.hv-card small{color:var(--muted);font-size:11px;line-height:1.5;display:block}
.hv-flow{margin-top:14px;border:1px dashed #d8dee8;border-radius:10px;padding:14px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:11.5px;color:#5f6c80;flex-wrap:wrap}
.hv-flow span{background:#eef3fb;border:1px solid #dce6f5;border-radius:6px;padding:4px 9px;font-weight:600}
.hv-flow em{font-style:normal;color:var(--orange)}

/* ---------- sections ---------- */
.section{max-width:1240px;margin:0 auto;padding:64px 24px}
.section-head{text-align:center;margin-bottom:40px}
.section-head .kicker{color:var(--orange-d);font-weight:800;font-size:12.5px;letter-spacing:2px;text-transform:uppercase}
.section-head h2{font-size:32px;letter-spacing:-1px;margin:8px 0 10px;font-weight:900}
.section-head p{color:var(--muted);margin:0;font-size:15px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(27,42,65,.1);border-color:#ffd9c6}
.feature-icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:21px;font-weight:800;background:var(--orange-l);color:var(--orange-d);margin-bottom:18px}
.feature-card h3{font-size:18px;margin:0 0 9px;font-weight:800}
.feature-card p{color:var(--muted);margin:0 0 16px;font-size:13.5px;line-height:1.8}
.feature-card ul{margin:0;padding-left:18px;color:#5f6c80;font-size:13px;line-height:2}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}
.step:before{counter-increment:s;content:"0" counter(s);display:block;font-size:26px;font-weight:900;color:#ffd0b9;margin-bottom:8px;letter-spacing:-1px}
.step b{display:block;margin-bottom:4px}
.step small{color:var(--muted);line-height:1.7}
.plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;display:flex;flex-direction:column;box-shadow:var(--shadow);position:relative}
.plan-card.hot{border-color:var(--orange);box-shadow:0 8px 28px rgba(255,122,69,.14)}
.plan-card .tag-hot{position:absolute;top:-11px;left:22px;background:var(--orange);color:#fff;font-size:11px;font-weight:800;padding:3px 10px;border-radius:999px}
.plan-card h3{margin:0 0 6px;font-size:18px}
.plan-card .plan-desc{color:var(--muted);font-size:12.5px;min-height:38px;margin-bottom:14px}
.plan-price{font-size:31px;font-weight:900;letter-spacing:-1.2px;margin-bottom:2px}
.plan-price small{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:0}
.plan-features{list-style:none;padding:0;margin:16px 0 22px;font-size:13px;color:#5f6c80;line-height:2.1;flex:1}
.plan-features li:before{content:"✓";color:var(--green);font-weight:800;margin-right:8px}

/* ---------- footer / filing ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:20px;padding:34px 24px 26px}
.footer-inner{max-width:1240px;margin:0 auto;display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;align-items:flex-start}
.footer-brand b{font-size:16px;display:block;margin-bottom:5px}
.footer-brand p{color:var(--muted);font-size:12.5px;margin:0;max-width:380px;line-height:1.8}
.footer-links{display:flex;gap:24px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.footer-links a:hover{color:var(--orange-d)}
.footer-bottom{max-width:1240px;margin:22px auto 0;padding-top:18px;border-top:1px solid #f0f2f6;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:#98a2b3;font-size:12px}
.beian{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.beian a{display:inline-flex;align-items:center;gap:5px;color:#7b8798}
.beian a:hover{color:var(--orange-d)}
.beian img{width:14px;height:14px}

/* ---------- workbench ---------- */
.workbench{max-width:1440px;margin:0 auto;padding:22px 24px 40px;display:grid;grid-template-columns:216px minmax(0,1fr);gap:20px;align-items:start}
.wb-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px;position:sticky;top:84px;box-shadow:var(--shadow)}
.wb-side-title{font-size:11px;color:var(--muted);font-weight:800;letter-spacing:1.4px;padding:8px 10px 10px}
.wb-side-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;color:#56637a;font-weight:600;cursor:pointer;margin-bottom:3px;transition:.15s}
.wb-side-item:hover{background:#f6f7f9;color:var(--ink)}
.wb-side-item.active{background:var(--ink);color:#fff}
.wb-side-item .ic{width:22px;text-align:center;font-size:15px}
.wb-side-foot{border-top:1px solid var(--line);margin-top:10px;padding:12px 10px 4px;font-size:11.5px;color:var(--muted);line-height:1.8}
.wb-main{min-width:0}
.wb-pane{animation:fade .22s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.pane-head{margin-bottom:18px}
.pane-head h2{font-size:24px;font-weight:900;letter-spacing:-.6px;margin:0 0 5px}
.pane-head p{color:var(--muted);margin:0;font-size:13.5px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;overflow:hidden}
.card-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.card-head h3{margin:0;font-size:15px;font-weight:800}
.card-head .sub{color:var(--muted);font-size:12px;font-weight:400;margin-left:8px}
.card-body{padding:20px}
.card-body.tight{padding:14px 20px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.row>*{min-width:0}
.col{flex:1}
.field{margin-bottom:14px}
.field label{display:block;font-weight:700;font-size:12.5px;margin-bottom:6px;color:#4a566b}
.input,.textarea,.select{width:100%;border:1px solid var(--line);background:#fff;border-radius:var(--radius-s);padding:9px 12px;color:var(--ink);outline:none;transition:.15s}
.input:focus,.textarea:focus,.select:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,122,69,.12)}
.textarea{resize:vertical;min-height:96px;line-height:1.7}
.hint{font-size:11.5px;color:var(--muted);margin-top:5px;line-height:1.6}
.notice{border-radius:9px;padding:10px 14px;font-size:12.5px;line-height:1.7;margin-bottom:14px}
.notice-info{background:#eef4ff;border:1px solid #d8e5fb;color:#2f5fa8}
.notice-warn{background:#fff7e8;border:1px solid #ffe4ad;color:#9a6b12}
.notice-ok{background:#eaf8f1;border:1px solid #c6ecd8;color:#167a52}
.switch{display:inline-flex;align-items:center;gap:8px;font-weight:600;cursor:pointer;font-size:13px;color:#4a566b}
.switch input{width:16px;height:16px;accent-color:var(--orange)}
.preset-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.preset-card{border:1px solid var(--line);border-radius:10px;padding:13px;cursor:pointer;transition:.15s;background:#fff}
.preset-card:hover{border-color:#ffc7ac}
.preset-card.sel{border-color:var(--orange);background:var(--orange-l);box-shadow:0 0 0 2px rgba(255,122,69,.1)}
.preset-card b{display:block;font-size:13px;margin-bottom:3px}
.preset-card small{color:var(--muted);font-size:11px;line-height:1.5;display:block}
.dropzone{border:2px dashed #d8dee8;border-radius:12px;padding:26px;text-align:center;background:#fbfcfe;cursor:pointer;transition:.15s}
.dropzone:hover,.dropzone.drag{border-color:var(--orange);background:var(--orange-l)}
.dropzone .dz-icon{font-size:26px;color:var(--orange);font-weight:800;display:block;margin-bottom:6px}
.dropzone b{display:block;margin-bottom:3px}
.dropzone small{color:var(--muted)}
.block-list{display:flex;flex-direction:column;gap:8px}
.block-row{display:grid;grid-template-columns:104px 1fr auto;gap:8px;align-items:start}
.block-row .select,.block-row .textarea{padding:7px 9px;font-size:12.5px}
.block-row .textarea{min-height:52px}
.block-row .mini-btns{display:flex;gap:3px;padding-top:4px}
.mini-btn{border:1px solid var(--line);background:#fff;border-radius:6px;width:26px;height:26px;cursor:pointer;color:var(--muted);font-size:12px;display:grid;place-items:center}
.mini-btn:hover{border-color:var(--orange);color:var(--orange-d)}
.result-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-top:14px}
.result-bar .rb-info{font-size:12.5px;color:#5f6c80}
.result-bar .rb-info b{color:var(--ink)}
.flow-toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.flow-toolbar .grow{flex:1;min-width:180px}
.flow-host{height:600px;border:1px solid var(--line);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;background:#fff}
.flow-tips{font-size:11.5px;color:var(--muted);padding:9px 20px;border-top:1px solid var(--line);background:#fbfcfe}
.slide-list{display:flex;flex-direction:column;gap:10px}
.slide-card{border:1px solid var(--line);border-radius:10px;padding:13px;background:#fcfdff}
.slide-head{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.slide-no{width:26px;height:26px;border-radius:7px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:11px;font-weight:800;flex:none}
.slide-card .select{width:auto;min-width:110px;padding:5px 8px;font-size:12px}
.slide-card .input{padding:7px 10px;font-size:13px}
.slide-card .textarea{min-height:62px;font-size:12.5px}
.quota-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.quota-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.quota-card small{color:var(--muted);font-size:12px;display:block;margin-bottom:4px}
.quota-num{font-size:28px;font-weight:900;letter-spacing:-1px}
.quota-num.orange{color:var(--orange-d)}
.progress{height:8px;border-radius:999px;background:#eef1f5;overflow:hidden;margin:10px 0 6px}
.progress-bar{height:100%;background:linear-gradient(90deg,var(--orange),#ffab7d);border-radius:999px;transition:.3s}
.table{width:100%;border-collapse:collapse;font-size:12.5px}
.table th{text-align:left;color:var(--muted);font-weight:700;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap;background:#fafbfd}
.table td{padding:10px 12px;border-bottom:1px solid #f0f2f6;color:#4a566b;vertical-align:top}
.table tr:last-child td{border-bottom:0}
.table tbody tr:hover{background:#fbfcfe}
.tag{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:700;white-space:nowrap}
.tag-green{background:#e7f7ef;color:#14835a}
.tag-gray{background:#eef1f5;color:#6b7789}
.tag-orange{background:var(--orange-l);color:var(--orange-d)}
.tag-red{background:#fdeceb;color:#c93b31}
.tag-blue{background:#eaf1fd;color:#2f6fd0}
.empty{text-align:center;color:var(--muted);padding:32px 16px;font-size:13px}

/* ---------- modal / toast ---------- */
.modal{position:fixed;inset:0;z-index:100;background:rgba(20,30,45,.5);display:grid;place-items:center;padding:20px}
.modal-card{background:#fff;border-radius:18px;width:100%;max-width:420px;box-shadow:var(--shadow-lg);overflow:hidden;animation:pop .2s ease}
@keyframes pop{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}
.modal-head{padding:22px 26px 0;display:flex;justify-content:space-between;align-items:center}
.modal-head h3{margin:0;font-size:20px;font-weight:900}
.modal-close{border:0;background:none;font-size:22px;color:var(--muted);cursor:pointer;line-height:1}
.modal-tabs{display:flex;gap:22px;padding:16px 26px 0;border-bottom:1px solid var(--line)}
.modal-tabs span{padding-bottom:10px;cursor:pointer;font-weight:700;color:var(--muted);border-bottom:2px solid transparent}
.modal-tabs span.active{color:var(--ink);border-color:var(--orange)}
.modal-body{padding:22px 26px 26px}
.modal-body .btn-block{margin-top:8px}
.modal-foot{text-align:center;color:var(--muted);font-size:12px;margin-top:14px}
#toast{position:fixed;right:24px;bottom:24px;z-index:200;display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.toast{background:var(--ink);color:#fff;padding:11px 18px;border-radius:10px;box-shadow:var(--shadow-lg);font-size:13px;max-width:360px;animation:fade .2s ease}
.toast.err{background:#c93b31}
.toast.ok{background:#167a52}
.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-mask{position:fixed;inset:0;z-index:150;background:rgba(255,255,255,.55);display:grid;place-items:center;backdrop-filter:blur(2px)}
.loading-box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 26px;box-shadow:var(--shadow-lg);font-weight:700;display:flex;align-items:center;gap:10px}
.loading-box .spinner{border-color:#ffd9c6;border-top-color:var(--orange)}
.icp-page{max-width:860px;margin:0 auto;padding:56px 24px}
.icp-page h1{font-size:30px;font-weight:900;letter-spacing:-.8px;margin:0 0 8px}
.icp-page .lead{color:var(--muted);margin-bottom:28px}

/* ---------- admin ---------- */
.admin-wrap{max-width:1440px;margin:0 auto;padding:22px 24px 40px;display:grid;grid-template-columns:210px minmax(0,1fr);gap:20px;align-items:start}
.admin-main{min-width:0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow)}
.stat-card small{color:var(--muted);font-size:12px;display:block}
.stat-card b{font-size:26px;font-weight:900;letter-spacing:-.8px;display:block;margin-top:4px}
.stat-card.accent b{color:var(--orange-d)}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 16px}
.form-grid .full{grid-column:1/-1}
.model-row{display:grid;grid-template-columns:110px 1fr auto;gap:10px;align-items:center;padding:11px 0;border-bottom:1px solid #f0f2f6}
.model-row:last-child{border-bottom:0}
.model-row b{font-size:13px}
.selftest-result{font-size:12px;margin-top:8px;padding:9px 12px;border-radius:8px;line-height:1.7}

@media(max-width:1000px){
  .hero-inner{grid-template-columns:1fr;padding:52px 24px}
  .hero-visual{transform:none;max-width:560px}
  .hero h1{font-size:36px}
  .grid-3,.plan-grid,.steps,.stat-grid{grid-template-columns:repeat(2,1fr)}
  .workbench,.admin-wrap{grid-template-columns:1fr}
  .wb-side{position:static;display:flex;flex-wrap:wrap;gap:4px}
  .wb-side-title,.wb-side-foot{display:none}
  .wb-side-item{flex:1;justify-content:center;min-width:110px}
  .preset-grid,.quota-cards{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}
}
@media(max-width:620px){
  .grid-3,.plan-grid,.steps,.stat-grid,.preset-grid,.quota-cards,.form-grid{grid-template-columns:1fr}
  .form-grid .full{grid-column:auto}
  .block-row{grid-template-columns:1fr}
  .flow-host{height:460px}
  .hero h1{font-size:30px}
  .section{padding:44px 20px}
}