:root{--bg-page: #E8E6E1;--bg-primary: #FAFAFA;--bg-secondary: #F2F2F4;--bg-tertiary: #FFFFFF;--sidebar-bg: #191D2B;--sidebar-border: #272C3E;--sidebar-text: #D1D5E4;--sidebar-text-secondary: #6C7293;--sidebar-hover: #21263A;--sidebar-active-bg: rgba(86, 141, 229, .14);--sidebar-active: #568DE5;--text-primary: #1A1A1A;--text-secondary: #6B6B6B;--text-tertiary: #9B9B9B;--accent: #3B7DD8;--accent-hover: #2B62AD;--accent-light: rgba(59, 125, 216, .07);--gold: #C5961B;--gold-light: rgba(197, 150, 27, .08);--color-concept: #3B7DD8;--color-company: #47956A;--color-person: #C5961B;--color-interview: #7E5FAD;--color-letter: #C2604A;--border: #DCDCDC;--border-light: #EAEAEA;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 14px rgba(0, 0, 0, .06);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .08);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-pill: 20px;--sidebar-width: 250px;--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html,body,#app{margin:0;padding:0;min-height:100vh;font-family:var(--font-sans);background:var(--bg-page);color:var(--text-primary);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}button{font-family:inherit;cursor:pointer}h1,h2,h3,h4,h5{font-weight:700;letter-spacing:-.02em;margin:0}.card{background:var(--bg-tertiary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:24px}.card-title{font-size:18px;font-weight:700;color:var(--text-primary);margin:0 0 16px;letter-spacing:-.02em}.hero{background:linear-gradient(135deg,#191d2b,#1e2438,#252d45);color:#fff;border-radius:var(--radius-lg);padding:32px;position:relative;overflow:hidden}.hero h1{color:#fff;font-size:24px;font-weight:700;margin:0 0 8px}.hero .hero-sub{color:#b7bcd3;font-size:13px}.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:var(--radius-pill);font-size:13px;font-weight:600;border:none;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn-gold{background:var(--gold);color:#1a1a1a}.btn-gold:hover{background:#b0851a;transform:translateY(-1px)}.btn-ghost{background:#ffffff14;color:#fff;border:1px solid rgba(255,255,255,.25)}.btn-ghost:hover{background:#ffffff29}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;letter-spacing:.02em}.badge-concept{background:#3b7dd81f;color:var(--color-concept)}.badge-company{background:#47956a1f;color:var(--color-company)}.badge-person{background:#c5961b24;color:var(--color-person)}.badge-interview-summary{background:#7e5fad24;color:var(--color-interview)}.badge-letter-summary{background:#c2604a24;color:var(--color-letter)}.badge-insight{background:#0000000f;color:var(--text-secondary)}.breadcrumb{font-size:12px;color:var(--text-tertiary);margin-bottom:16px}.breadcrumb a{color:var(--text-secondary)}.breadcrumb a:hover{color:var(--accent)}.breadcrumb .sep{margin:0 6px;color:var(--text-tertiary)}.app-shell{display:flex;min-height:100vh}.main-area{flex:1;margin-left:var(--sidebar-width);padding:28px 36px 60px;max-width:calc(100vw - var(--sidebar-width))}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);color:var(--sidebar-text);position:fixed;top:0;left:0;bottom:0;padding:22px 14px 14px;border-right:1px solid var(--sidebar-border);display:flex;flex-direction:column;font-size:15px;z-index:10;overflow-y:auto}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}.sidebar .logo{color:#fff;font-size:16px;font-weight:700;padding:6px 12px 16px;letter-spacing:-.01em}.sidebar .nav-divider{height:1px;background:var(--sidebar-border);margin:4px 6px 14px}.sidebar .nav-label{font-size:11px;text-transform:uppercase;color:var(--sidebar-text-secondary);font-weight:600;letter-spacing:.08em;padding:14px 12px 6px}.sidebar .nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;margin:2px 0;border-radius:8px;color:var(--sidebar-text);cursor:pointer;transition:all .16s ease;text-decoration:none;font-size:14px}.sidebar .nav-item:hover{background:var(--sidebar-hover);color:#fff}.sidebar .nav-item.active{background:var(--sidebar-active-bg);color:var(--sidebar-active)}.sidebar .nav-item .icon{width:20px;text-align:center}.sidebar .nav-item .label{flex:1}.sidebar .nav-item .count{background:#ffffff14;color:var(--sidebar-text-secondary);font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600}.sidebar .ai-chat-btn{margin-top:auto;background:linear-gradient(135deg,#c5961b,#a37714);color:#1a1a1a;border-radius:var(--radius-md);padding:14px;font-weight:700;display:flex;align-items:center;gap:10px;text-decoration:none;transition:transform .2s ease;position:relative}.sidebar .ai-chat-btn:hover{transform:translateY(-1px)}.sidebar .ai-chat-btn .new-badge{background:var(--accent);color:#fff;font-size:10px;padding:2px 6px;border-radius:6px;letter-spacing:.05em;font-weight:700}