/* ═══════════════════════════════════════════════
   睿枢AI研究工作站 · Loom 设计系统 v2.0
   ═══════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  --p: #059669;
  --p-light: #f0fdf4;
  --p-dark: #065f46;
  --p-bg: #f8fafc;
  --surface: #fff;
  --surface-hover: #f1f5f9;
  --border: #e2e8f0;
  --ink: #1c1917;
  --ink-2: #64748b;
  --ink-3: #94a3b8;
  --r: 8px;
  --r-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
}

*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter','PingFang SC','Noto Sans SC','Helvetica Neue',sans-serif;background:var(--p-bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;border-radius:var(--r);font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .15s;text-decoration:none;font-family:inherit}
.btn-primary{background:var(--p);color:#fff}
.btn-primary:hover{background:var(--p-dark);box-shadow:var(--shadow-md)}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--border)}
.btn-outline:hover{background:var(--surface-hover);border-color:var(--ink-3)}
.btn-ghost{background:transparent;color:var(--ink-2);border:none}
.btn-ghost:hover{background:var(--surface-hover);color:var(--ink)}
.btn-danger{background:#dc2626;color:#fff}
.btn-danger:hover{background:#b91c1c}
.btn-sm{padding:6px 14px;font-size:12px}
.btn-block{display:flex;width:100%;justify-content:center;text-align:center}

/* ── Forms ── */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:4px}
.form-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--r);font-size:14px;color:var(--ink);background:var(--surface);transition:border-color .15s;outline:none;font-family:inherit}
.form-input:focus{border-color:var(--p);box-shadow:0 0 0 3px var(--p-light)}
.form-input::placeholder{color:var(--ink-3)}

/* ── Card ── */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;margin-bottom:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.card-header h3{font-size:15px;font-weight:700;color:var(--ink)}

/* ── Stats ── */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}
.stat-card{border:1px solid var(--border);border-radius:var(--r);padding:16px;background:var(--surface)}
.stat-card .num{font-size:24px;font-weight:700;color:var(--ink);font-feature-settings:"tnum"}
.stat-card .label{font-size:12px;color:var(--ink-2);margin-top:2px}
.stat-card .trend{font-size:11px;color:var(--p);margin-top:4px}

/* ── Tags ── */
.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:4px;font-weight:500}
.tag-green{background:var(--p-light);color:var(--p)}
.tag-gray{background:var(--surface-hover);color:var(--ink-2)}
.tag-red{background:#fef2f2;color:#dc2626}
.tag-amber{background:#fffbeb;color:#d97706}

/* ── Table ── */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:10px 12px;font-weight:600;color:var(--ink-2);font-size:12px;border-bottom:2px solid var(--border)}
td{padding:10px 12px;border-bottom:1px solid var(--border);color:var(--ink)}
tr:hover td{background:var(--surface-hover)}

/* ── Toast ── */
.toast{position:fixed;top:20px;right:20px;padding:12px 20px;border-radius:var(--r);font-size:13px;z-index:999;animation:slideIn .2s;max-width:360px}
.toast.success{background:var(--p-dark);color:#fff}
.toast.error{background:#dc2626;color:#fff}
@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}

/* ── Loading ── */
.loading{text-align:center;padding:30px;color:var(--ink-2);font-size:13px}
.loading .spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--p);border-radius:50%;animation:spin .6s linear infinite;margin-right:6px;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── Modal ── */
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:100;align-items:center;justify-content:center}
.modal.show{display:flex}
.modal-card{background:var(--surface);border-radius:var(--r-lg);width:700px;max-height:80vh;overflow-y:auto;margin:20px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--surface)}
.modal-header h3{font-size:15px;font-weight:700}
.modal-close{background:none;border:none;cursor:pointer;color:var(--ink-3);padding:4px;border-radius:4px}
.modal-close:hover{background:var(--surface-hover);color:var(--ink)}
.modal-close svg{width:18px;height:18px}
.modal-body{padding:20px;font-size:13px;line-height:1.7;white-space:pre-wrap;color:var(--ink-2)}

/* ── Upload Zone ── */
.upload-zone{border:2px dashed var(--border);border-radius:var(--r-lg);padding:30px;text-align:center;cursor:pointer;transition:all .15s;margin-bottom:16px}
.upload-zone:hover{border-color:var(--p);background:var(--p-light)}
.upload-zone svg{width:32px;height:32px;color:var(--ink-3);margin-bottom:6px}
.upload-zone p{font-size:13px;color:var(--ink-2)}
.upload-zone .hint{font-size:11px;color:var(--ink-3);margin-top:2px}

/* ── Search Bar ── */
.search-bar{display:flex;gap:8px;margin-bottom:16px}
.search-bar input{flex:1;padding:9px 14px;border:1px solid var(--border);border-radius:var(--r);font-size:13px;outline:none;font-family:inherit}
.search-bar input:focus{border-color:var(--p);box-shadow:0 0 0 3px var(--p-light)}

/* ── Empty State ── */
.empty-state{text-align:center;padding:40px 20px;color:var(--ink-2)}
.empty-state svg{width:40px;height:40px;color:var(--ink-3);margin-bottom:8px}
.empty-state p{font-size:13px;margin-bottom:12px}

/* ── Pagination ── */
.pagination{display:flex;gap:4px;margin-top:16px;justify-content:center}
.page-btn{padding:6px 12px;border:1px solid var(--border);border-radius:6px;font-size:12px;cursor:pointer;background:var(--surface);color:var(--ink-2)}
.page-btn.active{background:var(--p);color:#fff;border-color:var(--p)}
.page-btn:hover:not(.active){background:var(--surface-hover)}

/* ── Section Title ── */
.section-label{font-size:11px;font-weight:700;color:var(--p);letter-spacing:2px;text-transform:uppercase;margin-bottom:4px;text-align:center}
.section-title{font-size:28px;font-weight:700;color:var(--ink);margin-bottom:6px;text-align:center}
.section-sub{font-size:15px;color:var(--ink-2);margin-bottom:36px;max-width:600px;margin-left:auto;margin-right:auto;text-align:center}

/* ── Page Header ── */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.page-header h2{font-size:18px;font-weight:700}
.section-title-sm{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:16px}

/* ── Login Page ── */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--p-bg)}
.login-card{width:380px;background:var(--surface);border-radius:var(--r-lg);padding:40px;box-shadow:var(--shadow-md)}
.login-logo{text-align:center;margin-bottom:28px}
.login-logo img{height:32px;width:auto;margin-bottom:8px}
.login-logo h1{font-size:20px;font-weight:700;color:var(--ink)}
.login-logo p{font-size:13px;color:var(--ink-2);margin-top:4px}

/* ── Landing Page ── */
/* Nav */
.lp-nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);height:56px}
.lp-nav-inner{max-width:1100px;margin:0 auto;padding:0 24px;display:flex;align-items:center;height:100%;justify-content:space-between}
.lp-nav-logo{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--ink)}
.lp-nav-logo img{height:28px;width:auto}
.lp-nav-links{display:flex;gap:24px;align-items:center}
.lp-nav-links a{font-size:13px;color:var(--ink-2);text-decoration:none;transition:color .15s}
.lp-nav-links a:hover{color:var(--ink)}
.lp-nav-links .btn-primary,.lp-nav-links .btn-primary:hover{color:#fff!important}

/* Hero */
.lp-hero{padding:120px 24px 64px;max-width:900px;margin:0 auto;text-align:center}
.lp-hero h1{font-size:44px;font-weight:800;color:var(--ink);line-height:1.15;letter-spacing:-1px}
.lp-hero .hl{background:linear-gradient(135deg,var(--p),var(--p-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.lp-hero .sub{font-size:17px;color:var(--ink-2);margin-top:16px;max-width:640px;margin-left:auto;margin-right:auto;line-height:1.7}
.lp-btns{margin-top:32px;display:flex;gap:12px;justify-content:center}
.lp-trust{display:flex;justify-content:center;gap:28px;margin-top:36px;flex-wrap:wrap}
.lp-trust span{font-size:12px;color:var(--ink-3);display:flex;align-items:center;gap:5px}
.lp-trust .dot{width:5px;height:5px;border-radius:50%;background:var(--p);display:inline-block}

/* Sections */
.lp-section{padding:64px 24px}
.lp-section-inner{max-width:1000px;margin:0 auto}
.lp-mono-bg{background:#f1f5f9}
.lp-surface-bg{background:var(--surface)}

/* Feature Grid */
.lp-features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lp-feature-card{border:1px solid var(--border);border-radius:var(--r-lg);padding:28px 24px;background:var(--surface);transition:all .2s}
.lp-feature-card:hover{box-shadow:var(--shadow-lg);border-color:transparent;transform:translateY(-2px)}
.lp-feature-card svg{width:28px;height:28px;color:var(--p);margin-bottom:10px}
.lp-feature-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:4px}
.lp-feature-card p{font-size:13px;color:var(--ink-2);line-height:1.6}

/* Scene Grid */
.lp-scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.lp-scene-card{border:1px solid var(--border);border-radius:var(--r-lg);padding:20px 18px;background:var(--surface);cursor:default;transition:all .2s}
.lp-scene-card:hover{box-shadow:var(--shadow-md);border-color:var(--p)}
.lp-scene-card svg{width:24px;height:24px;color:var(--p);margin-bottom:8px}
.lp-scene-card h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:2px}
.lp-scene-card p{font-size:12px;color:var(--ink-2);line-height:1.5}

/* Monitor */
.lp-monitor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:24px}
.lp-monitor-card{padding:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);transition:all .15s}
.lp-monitor-card:hover{box-shadow:var(--shadow)}
.lp-monitor-card .ml{font-size:10px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.5px;margin-bottom:2px}
.lp-monitor-card .mv{font-size:24px;font-weight:700;color:var(--ink);font-feature-settings:"tnum"}
.lp-monitor-card .mc{font-size:11px;margin-top:1px}
.lp-monitor-card .mc.up{color:#059669}
.lp-monitor-card .mc.down{color:#dc2626}
.lp-monitor-card .ms{font-size:9px;color:var(--ink-3);margin-top:4px}
.lp-tab-row{display:flex;gap:6px;margin-bottom:16px;justify-content:center}
.lp-tab-btn{padding:6px 18px;font-size:13px;border:1px solid var(--border);border-radius:20px;cursor:pointer;background:var(--surface);color:var(--ink-2);transition:all .15s;font-family:inherit}
.lp-tab-btn.active{background:var(--p);color:#fff;border-color:var(--p)}

/* Pricing */
.lp-pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lp-pricing-card{padding:32px 28px;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface);position:relative;transition:all .2s}
.lp-pricing-card:hover{box-shadow:var(--shadow-lg)}
.lp-pricing-card.featured{border-color:var(--p);box-shadow:0 0 0 1px var(--p),var(--shadow-md)}
.lp-pricing-card .badge{position:absolute;top:-10px;left:50%;transform:translateX(-50%);background:var(--p);color:#fff;font-size:10px;padding:3px 14px;border-radius:20px;font-weight:700}
.lp-pricing-card h3{font-size:15px;font-weight:700;color:var(--ink)}
.lp-pricing-card .price{font-size:36px;font-weight:800;color:var(--ink);margin:8px 0 2px;letter-spacing:-1px}
.lp-pricing-card .price span{font-size:14px;font-weight:400;color:var(--ink-2)}
.lp-pricing-card .per{font-size:12px;color:var(--ink-3);margin-bottom:16px}
.lp-pricing-card ul{list-style:none;padding:0;margin:0 0 20px}
.lp-pricing-card li{font-size:13px;color:var(--ink-2);padding:5px 0;display:flex;align-items:center;gap:8px}
.lp-pricing-card li svg{width:14px;height:14px;color:var(--p);flex-shrink:0}
.lp-pricing-card .btn-block{display:flex;width:100%;justify-content:center;text-align:center}

/* Data Base */
.lp-data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.lp-data-card{border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;background:var(--surface)}
.lp-data-card h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:2px}
.lp-data-card .size{font-size:11px;color:var(--ink-3);margin-bottom:6px}
.lp-data-card p{font-size:12px;color:var(--ink-2);line-height:1.5}
.lp-data-card svg{width:24px;height:24px;color:var(--p);margin-bottom:8px}

/* Exchange Cards */
.lp-exchange-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.lp-exchange-card{border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;background:var(--surface);transition:all .2s}
.lp-exchange-card:hover{box-shadow:var(--shadow-md);border-color:var(--p)}
.lp-exchange-card .ex-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.lp-exchange-card .ex-name{font-weight:700;font-size:14px;color:var(--ink)}
.lp-exchange-card .ex-source{font-size:10px;color:var(--ink-3)}
.lp-exchange-card p{font-size:12px;color:var(--ink-2);line-height:1.5}
.lp-exchange-card .ex-tag{font-size:10px;padding:2px 6px;border-radius:4px;font-weight:600}

/* CTA */
.lp-cta{background:linear-gradient(135deg,var(--p-dark),var(--p));text-align:center;padding:64px 24px;color:#fff}
.lp-cta h2{font-size:28px;font-weight:700;margin-bottom:6px}
.lp-cta p{font-size:15px;opacity:.85;margin-bottom:24px;max-width:480px;margin-left:auto;margin-right:auto}
.lp-cta .btn{background:#fff;color:var(--p-dark);padding:12px 32px;font-size:15px;font-weight:700;border-radius:var(--r)}
.lp-cta .btn:hover{background:#f0fdf4}

/* Footer */
.lp-footer{padding:28px 24px;text-align:center;font-size:12px;color:var(--ink-3);border-top:1px solid var(--border)}
.lp-footer a{color:var(--ink-3);text-decoration:none}
.lp-footer a:hover{color:var(--ink)}

/* ── Internal Layout ── */
.app-container{min-height:100vh;display:flex;flex-direction:column}
.app-main{flex:1;display:flex}

/* Sidebar */
.sidebar{width:60px;background:var(--surface);border-right:1px solid var(--border);padding:16px 0;display:flex;flex-direction:column;align-items:center;transition:width .2s;overflow:hidden;flex-shrink:0}
.sidebar.expanded{width:200px;align-items:stretch;padding:16px 12px}
.sidebar-logo{width:28px;height:28px;background:var(--p-light);border-radius:var(--r);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--p);flex-shrink:0}
.sidebar-logo svg{width:16px;height:16px}
.sidebar .nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px;border-radius:var(--r);color:var(--ink-2);text-decoration:none;font-size:13px;transition:all .1s;white-space:nowrap;border:none;background:none;cursor:pointer;font-family:inherit}
.sidebar .nav-item:hover{background:var(--surface-hover);color:var(--ink)}
.sidebar .nav-item.active{background:var(--p-light);color:var(--p);font-weight:600}
.sidebar .nav-item svg{width:18px;height:18px;flex-shrink:0}
.sidebar-toggle{margin-top:auto;padding:8px;border:none;background:none;cursor:pointer;color:var(--ink-3);border-radius:var(--r)}
.sidebar-toggle:hover{background:var(--surface-hover);color:var(--ink)}
.sidebar-toggle svg{width:16px;height:16px}
.sidebar-user{display:flex;align-items:center;gap:8px;width:100%;padding:10px 12px;font-size:12px;color:var(--ink-2)}

/* App Content */
.app-content{flex:1;padding:24px 32px;max-width:960px}
.app-header{background:var(--surface);border-bottom:1px solid var(--border);padding:0 32px;height:56px;display:flex;align-items:center;justify-content:space-between}

/* User */
.user-info{display:flex;align-items:center;gap:8px;margin-top:auto;padding:12px 0}
.user-avatar{width:28px;height:28px;border-radius:50%;background:var(--p);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px}
.user-name{font-size:12px;color:var(--ink-2)}
.plan-badge{display:inline-block;font-size:10px;padding:2px 8px;border-radius:4px;background:var(--p-light);color:var(--p);font-weight:600;margin-top:2px}

/* ── Industry Table ── */
.industry-table{width:100%;border-collapse:collapse;font-size:13px;background:var(--surface);border-radius:var(--r);overflow:hidden;border:1px solid var(--border)}
.industry-table th{text-align:left;padding:10px 14px;font-size:11px;color:var(--ink-2);font-weight:600;border-bottom:1px solid var(--border);background:#fafafa}
.industry-table td{padding:10px 14px;border-bottom:1px solid var(--border);color:var(--ink)}
.industry-table tr:last-child td{border-bottom:none}
.industry-table .sector{font-weight:600;color:var(--ink)}
.industry-table .status{display:inline-flex;align-items:center;gap:4px;font-size:11px}

/* ── Research Config Panel ── */
.config-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;margin-bottom:20px}
.config-panel h3{font-size:15px;font-weight:700;margin-bottom:16px}
.config-row{display:flex;gap:12px;margin-bottom:14px;align-items:flex-start}
.config-row label{font-size:13px;font-weight:600;color:var(--ink);min-width:100px;padding-top:8px}
.config-row select,.config-row input[type="text"]{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:var(--r);font-size:13px;outline:none;font-family:inherit;background:var(--surface);color:var(--ink)}
.config-row select:focus,.config-row input[type="text"]:focus{border-color:var(--p);box-shadow:0 0 0 3px var(--p-light)}
.config-row textarea{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:var(--r);font-size:13px;outline:none;font-family:inherit;resize:vertical;min-height:60px}
.config-row textarea:focus{border-color:var(--p);box-shadow:0 0 0 3px var(--p-light)}
.toggle-wrap{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.toggle-wrap input[type="checkbox"]{width:16px;height:16px;accent-color:var(--p)}
.toggle-wrap label{font-size:13px;color:var(--ink-2)}

/* ── Progress ── */
.progress-bar{height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-bottom:12px}
.progress-bar .fill{height:100%;background:var(--p);border-radius:3px;transition:width .5s ease}
.stage-list{list-style:none;padding:0}
.stage-item{display:flex;align-items:center;gap:8px;padding:8px 0;font-size:13px;color:var(--ink-2);border-bottom:1px solid var(--border)}
.stage-item:last-child{border-bottom:none}
.stage-item.active{color:var(--p);font-weight:600}
.stage-item.done{color:var(--ink)}
.stage-item svg{width:16px;height:16px;flex-shrink:0}
.stage-item .s-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}

/* ── Steps ── */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{text-align:center;padding:20px}
.step-num{width:40px;height:40px;border-radius:50%;background:var(--p-light);color:var(--p);font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.step-card h3{font-size:15px;font-weight:700;margin-bottom:4px}
.step-card p{font-size:13px;color:var(--ink-2);line-height:1.6}

/* ── Knowledge Doc List ── */
.doc-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}
.doc-item:last-child{border-bottom:none}
.doc-item svg{width:18px;height:18px;color:var(--p);flex-shrink:0}
.doc-item .doc-title{flex:1;font-size:13px;font-weight:600;color:var(--ink)}
.doc-item .doc-meta{font-size:11px;color:var(--ink-3)}

/* ── Responsive ── */
@media(max-width:768px){
  .lp-features,.lp-scenes,.lp-pricing,.lp-data-grid,.lp-exchange-grid{grid-template-columns:1fr}
  .lp-monitor-grid{grid-template-columns:repeat(2,1fr)}
  .lp-hero h1{font-size:30px}
  .lp-section{padding:40px 16px}
  .lp-hero{padding:100px 16px 40px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .sidebar{display:none}
  .app-content{padding:16px}
  .login-card{width:auto;margin:0 16px}
  .modal-card{width:auto;margin:10px}
  .config-row{flex-direction:column}
  .config-row label{min-width:auto}
}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}