/* BuddyWay 浅色主题 — 结构与 buddy.cheap 对齐，仅配色为浅色 */
:root{
  color-scheme:light;
  --purple:#724bff;--purple-light:#6d4aff;--purple-dark:#583ed3;
  --green:#28b894;--green-light:#1fa882;--orange:#ff9500;--red:#ff3b30;
  --bg:#f4f6fb;--bg-light:#eef1f8;--surface:#ffffff;--surface-light:#f8faff;
  --surface-dark:#eef2ff;--surface-elevated:#ffffff;
  --border:#e2e8f0;--border-light:rgba(114,75,255,.22);--border-subtle:#edf2f7;
  --text:#0f172a;--text-secondary:#475569;--text-dim:#94a3b8;--text-primary:#0f172a;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);--shadow-md:0 4px 16px rgba(15,23,42,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#f8faff 0%,var(--bg) 40%,#eef2ff 100%);color:var(--text);min-height:100vh}
a{text-decoration:none;color:inherit}
button,input,select,textarea{font:inherit;cursor:pointer}
.main-content{max-width:1200px;margin:0 auto;padding:24px 20px 60px}
.topbar{background:rgba(255,255,255,.92);padding:0 20px;position:sticky;top:0;z-index:100;backdrop-filter:blur(16px);box-shadow:0 1px 0 var(--border)}
.topbar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:56px;padding:8px 0}
.topbar-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px}
.topbar-logo img,.logo-img{width:32px;height:32px;border-radius:8px}
.topbar-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.nav-links{display:flex;gap:4px}
.nav-link{padding:8px 14px;border-radius:10px;color:var(--text-secondary);font-size:14px;font-weight:500;transition:.15s}
.nav-link:hover,.nav-link.active{background:var(--surface-dark);color:var(--text)}
.btn-activate{padding:10px 16px;border-radius:10px;background:linear-gradient(135deg,#007aff,#0055d4);color:#fff;font-weight:700;border:none;box-shadow:0 2px 8px rgba(0,122,255,.25)}
.nav-user{position:relative;display:inline-flex;align-items:center;gap:4px}
.nav-credits-link{height:24px;overflow:hidden;display:inline-block;text-decoration:none;color:var(--green);font-weight:700;font-size:14px}
.nav-credits-inner{display:flex;flex-direction:column;transition:transform .3s cubic-bezier(.4,0,.2,1)}
.nav-user:hover .nav-credits-inner,.nav-user.open .nav-credits-inner{transform:translateY(-24px)}
.nav-credits-text{display:block;height:24px;line-height:24px;white-space:nowrap}
.nav-arrow{display:inline-flex;align-items:center;color:var(--text-dim);transition:transform .3s,color .3s;cursor:pointer}
.nav-arrow svg{width:16px;height:16px}
.nav-user:hover .nav-arrow,.nav-user.open .nav-arrow{transform:rotate(180deg);color:var(--green)}
.nav-dropdown{position:absolute;top:100%;right:0;margin-top:8px;background:#fff;border:1px solid var(--border);border-radius:10px;min-width:140px;padding:6px 0;opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .25s ease;box-shadow:var(--shadow-md);z-index:200}
.nav-user:hover .nav-dropdown,.nav-user.open .nav-dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.nav-dropdown-item{display:block;width:100%;padding:10px 16px;border:0;background:transparent;text-align:left;color:var(--text-secondary);font-size:14px;cursor:pointer;text-decoration:none}
.nav-dropdown-item:hover{background:var(--surface-light);color:var(--text)}
.nav-dropdown-danger{color:var(--red)}
.nav-dropdown-danger:hover{background:#fef2f2;color:var(--red)}
.logout-overlay{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px}
.logout-card{background:#fff;border-radius:16px;padding:24px;width:100%;max-width:400px;box-shadow:0 20px 50px rgba(15,23,42,.15)}
.logout-card h3{margin:0 0 8px;font-size:18px}
.logout-meta{background:var(--surface-light);border:1px solid var(--border-subtle);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--text-secondary);line-height:1.7;margin:12px 0;word-break:break-all}
.logout-actions{display:flex;gap:10px;margin-top:16px}
.logout-actions .btn{flex:1}
.page-section{display:none}.page-section.active{display:block}
.hero{text-align:center;padding:10px 0 24px;position:relative}
.hero h1{font-size:clamp(32px,5vw,48px);font-weight:800;margin:8px 0 12px;letter-spacing:-.02em}
.hero-badges{display:flex;justify-content:center;gap:10px;margin-top:16px;flex-wrap:wrap}
.badge{padding:6px 14px;border-radius:20px;font-size:13px;font-weight:600;border:1px solid}
.badge-purple{background:#f5f3ff;border-color:#ddd6fe;color:#6d28d9}
.badge-green{background:#ecfdf5;border-color:#a7f3d0;color:#047857}
.badge-blue{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}
.badge-orange{background:#fff7ed;border-color:#fed7aa;color:#c2410c}
.mascot{width:120px;height:120px;margin:0 auto 8px;border-radius:28px;background:linear-gradient(145deg,#eef2ff,#f5f3ff);display:grid;place-items:center;font-size:52px;box-shadow:var(--shadow-md)}
.robot-container{position:relative;width:140px;height:140px;margin:0 auto 12px}
.robot-body{width:100px;height:100px;margin:20px auto 0;border-radius:28px;background:linear-gradient(145deg,#eef2ff,#f5f3ff);display:grid;place-items:center;font-size:52px;box-shadow:var(--shadow-md);position:relative;z-index:2}
.robot-wing{position:absolute;top:36px;width:28px;height:40px;border-radius:40% 10% 40% 10%;background:linear-gradient(135deg,#c4b5fd,#724bff);opacity:.75;z-index:1}
.robot-wing-left{left:0;transform-origin:right center;animation:wingFlap 2.4s ease-in-out infinite}
.robot-wing-right{right:0;transform-origin:left center;animation:wingFlap 2.4s ease-in-out infinite reverse}
.speech-bubble{position:absolute;top:-4px;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--border);border-radius:12px;padding:6px 12px;font-size:12px;font-weight:600;color:var(--text-secondary);white-space:nowrap;box-shadow:var(--shadow-sm);z-index:3}
.speech-bubble::after{content:'';position:absolute;left:50%;bottom:-6px;transform:translateX(-50%);border:6px solid transparent;border-top-color:#fff}
body.anim-off .robot-wing{animation:none}
body.anim-off .robot-body{animation:none}
.robot-container:not(.anim-off) .robot-body{animation:robotFloat 3s ease-in-out infinite}
@keyframes robotFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes wingFlap{0%,100%{transform:rotate(0deg)}50%{transform:rotate(-18deg)}}
.clients-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:12px}
.client-card{padding:16px;border:1px solid var(--border-subtle);border-radius:12px;background:var(--surface-light)}
.client-name{font-weight:700;font-size:14px;margin-bottom:10px}
.client-tags{display:flex;flex-wrap:wrap;gap:8px}
.client-tag{padding:4px 10px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:12px;color:var(--text-secondary)}
.faq-table-wrap{overflow:auto;margin-top:8px}
.faq-table{width:100%;border-collapse:collapse;font-size:13px}
.faq-table th,.faq-table td{padding:8px 10px;border:1px solid var(--border-subtle);text-align:left}
.faq-table th{background:var(--surface-light);font-weight:700}
.model-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:8px 0 10px}
.model-toolbar-actions{display:flex;gap:6px;flex-wrap:wrap}
.model-toolbar .btn-ghost.small{padding:6px 10px;font-size:12px}
#modelSelectSummary{font-size:13px;color:var(--text-dim);font-weight:600}
.tutorial-steps{display:grid;gap:10px;margin-top:12px}
.tutorial-step{padding:14px 16px;border:1px solid var(--border-subtle);border-radius:12px;background:var(--surface-light)}
.tutorial-step strong{display:block;margin-bottom:4px;font-size:14px}
.tutorial-step p{margin:0;font-size:13px;color:var(--text-secondary);line-height:1.7}
.tutorial-toggle{margin-top:12px}
.query-auto-hint{font-size:12px;color:var(--text-dim);text-align:center;margin-top:10px}
.quick-guide{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;margin:24px auto 0;max-width:1100px;box-shadow:var(--shadow-sm)}
.guide-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.guide-header h3{font-size:18px;font-weight:700}
.guide-steps{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-bottom:4px}
.guide-step{display:flex;align-items:center;gap:8px;padding:12px;background:var(--surface-light);border:1px solid var(--border-subtle);border-radius:12px;flex:1;min-width:180px}
.guide-step-num{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--purple-dark));color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;flex-shrink:0}
.guide-step-info{flex:1;min-width:0}.guide-step-info strong{display:block;font-size:14px}.guide-step-info p{font-size:12px;color:var(--text-secondary);margin:0}
.guide-step-btn,.guide-step-done{padding:6px 12px;border-radius:8px;font-size:12px;font-weight:600;white-space:nowrap;border:none}
.guide-step-btn{background:var(--purple);color:#fff}.guide-step-btn-blue{background:linear-gradient(135deg,#007aff,#0055d4)}.guide-step-btn-green{background:var(--green);color:#fff}
.guide-step-done{background:#ecfdf5;border:1px solid #a7f3d0;color:var(--green)}
.guide-step-arrow{color:var(--text-dim);flex-shrink:0;font-size:18px}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:28px 0 36px}
.card{background:var(--surface);border:1px solid var(--border-subtle);border-radius:16px;padding:24px;transition:.2s;cursor:pointer;display:flex;flex-direction:column}
.card:hover{border-color:var(--border-light);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.card-icon{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;font-size:22px}
.card-icon.blue{background:#eff6ff;color:#2563eb}.card-icon.green{background:#ecfdf5;color:#059669}.card-icon.purple{background:#f5f3ff;color:#7c3aed}
.card h3{font-size:18px;margin-bottom:8px}.card p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:16px;flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:10px;font-weight:700;border:none}
.card .btn{width:100%}.btn-query{background:linear-gradient(135deg,#007aff,#0055d4);color:#fff}.btn-success{background:var(--green);color:#fff}.btn-primary{background:linear-gradient(135deg,var(--purple),var(--purple-dark));color:#fff}
.btn-large{padding:13px 20px;font-size:15px;width:100%}
.info-section{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px;margin-top:20px}
.info-section h3{font-size:16px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.info-list{padding-left:20px;color:var(--text-secondary);font-size:14px;line-height:1.8}
.faq-section{margin-top:20px}.faq-item{border:1px solid var(--border);border-radius:12px;background:#fff;margin-bottom:8px;overflow:hidden}
.faq-q{width:100%;padding:14px 16px;border:0;background:#fff;text-align:left;font-weight:700;display:flex;justify-content:space-between}
.faq-a{display:none;padding:0 16px 14px;color:var(--text-secondary);font-size:14px;line-height:1.7}.faq-item.open .faq-a{display:block}
.form-container{background:var(--surface);border-radius:16px;padding:32px;border:1px solid var(--border-subtle);max-width:800px;margin:0 auto;box-shadow:var(--shadow-sm)}
.form-header{text-align:center;margin-bottom:24px}.form-header h2{font-size:22px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px}
.form-group{margin-bottom:18px}.form-label{display:block;font-size:13px;font-weight:600;margin-bottom:8px}
.form-input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:ui-monospace,Menlo,monospace;background:#fff;color:var(--text);outline:none}
.form-input:focus{border-color:var(--purple);box-shadow:0 0 0 3px rgba(114,75,255,.12)}
.form-input.large{padding:14px 18px;font-size:16px}
.bk-input-wrap{position:relative}.bk-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:36px;height:36px;border:0;border-radius:8px;background:transparent;color:var(--text-dim)}
.error-msg,.success-msg{display:none;margin-bottom:12px;padding:10px 12px;border-radius:10px;font-size:13px}.error-msg.show{display:block;background:#fef2f2;color:#dc2626;border:1px solid #fecaca}.success-msg.show{display:block;background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
.result-box{display:none;margin-top:20px;padding-top:20px;border-top:1px solid var(--border)}.result-box.show{display:block}
.result-label{font-weight:700;font-size:14px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}
.stat-card{padding:16px 10px;text-align:center;background:var(--surface-light);border:1px solid var(--border-subtle);border-radius:12px}
.stat-card .stat-value{font-size:24px;font-weight:800;font-variant-numeric:tabular-nums}.stat-card:first-child .stat-value{color:var(--green)}
.stat-card .stat-label{font-size:12px;color:var(--text-dim);margin-top:6px}
.progress-wrap{margin-top:16px;padding:14px 16px;background:var(--surface-light);border-radius:12px;border:1px solid var(--border-subtle)}
.progress-head{display:flex;justify-content:space-between;font-size:14px;font-weight:600;margin-bottom:8px}
.progress-container{height:8px;background:#e2e8f0;border-radius:999px;overflow:hidden}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--purple),#38bdf8);transition:width .4s}
.progress-foot{display:flex;justify-content:space-between;margin-top:8px;font-size:12px;color:var(--text-dim)}
.quick-actions{display:none;margin-top:20px;gap:10px}.quick-actions.show{display:flex}
.usage-panel{margin-top:20px;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.usage-toggle{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--surface-light);cursor:pointer;font-weight:600}
.usage-list{display:none;max-height:320px;overflow:auto}.usage-list.show{display:block}
.usage-row{display:flex;justify-content:space-between;padding:10px 16px;border-top:1px solid var(--border-subtle);font-size:13px;color:var(--text-secondary)}
.model-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:12px 0}
.model-checkbox-item{display:flex;gap:8px;align-items:center;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface-light);font-size:13px}
.model-checkbox-label{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--text)}
.model-checkbox-item.checked{border-color:#93c5fd;background:#eff6ff}
.method-tabs{display:flex;gap:8px;margin:16px 0}.method-tab{flex:1;height:38px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text-secondary);font-weight:700;font-size:12px}
.method-tab.active{background:#eff6ff;border-color:#93c5fd;color:#1d4ed8}
.method-content{display:none}.method-content.active{display:block}
.code-preview{width:100%;min-height:200px;padding:14px;border:1px solid var(--border);border-radius:10px;background:#0f172a;color:#e2e8f0;font-family:ui-monospace,Menlo,monospace;font-size:12px;line-height:1.5;resize:vertical}
.tool-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.btn-ghost{background:#fff;border:1px solid var(--border);color:var(--text);padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600}
.footer{text-align:center;padding:24px;color:var(--text-dim);font-size:12px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);padding:10px 16px;background:#111827;color:#fff;border-radius:10px;font-size:13px;opacity:0;pointer-events:none;transition:.2s;z-index:200}
.toast.show{opacity:1}
@media(max-width:900px){.cards-grid,.stats-grid,.model-grid,.clients-grid{grid-template-columns:1fr}.guide-steps{flex-wrap:nowrap}.form-container{padding:22px 18px}}