:root{--b: #2563eb;--b2: #60a5fa;--b3: #3b82f6;--ink: #0f172a;--muted: #64748b;--muted2: #94a3b8;--line: #e5eaf2;--line2: #eef2f7;--soft: #eff6ff;--soft2: #f8fbff;--bg: #f7f9fc;--green: #22c55e;--green-bg: #f0fdf4;--red: #ef4444;--amber: #f59e0b;--radius: 16px;--radius-sm: 12px;--radius-lg: 21px;--shadow: 0 10px 35px #0f172a0d;--shadow-sm: 0 4px 12px #0f172a08;--transition: .25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);background:linear-gradient(180deg,#f9fbff,#eef5ff 55%,#f9fbff);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button,textarea,input{font:inherit;color:inherit}.header{height:68px;border-bottom:1px solid var(--line);background:#ffffffde;backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);display:flex;align-items:center;justify-content:space-between;padding:0 30px;position:sticky;top:0;z-index:100}.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:14px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:opacity var(--transition)}.brand:hover{opacity:.8}.logo{width:31px;height:31px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#60a5fa);color:#fff;display:grid;place-items:center;font-size:16px}.header-center{font-size:13px;color:var(--muted)}.header-center b{color:var(--ink)}.header-right{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green)}main{max-width:1180px;margin:0 auto;padding:35px 28px 70px}.hero{text-align:center;padding:60px 0 35px}.eyebrow{font-size:12px;color:var(--b);font-weight:700;letter-spacing:.06em}.hero h1{font-size:46px;letter-spacing:-.045em;margin:16px 0 12px;line-height:1.15;font-weight:700}.hero p{font-size:15px;line-height:1.8;color:var(--muted);max-width:680px;margin:0 auto}.card{background:#fffffff0;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.input-card{max-width:820px;margin:32px auto 0;padding:20px}.input-card textarea{width:100%;height:145px;border:0;outline:0;resize:none;background:transparent;padding:10px;font-size:16px;line-height:1.7}.input-bar{border-top:1px solid var(--line2);padding-top:14px;display:flex;justify-content:space-between;align-items:center}.hint{font-size:11px;color:var(--muted2)}.examples{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:16px}.example{background:#fff;border:1px solid var(--line);border-radius:99px;padding:8px 14px;font-size:12px;color:var(--muted);cursor:pointer;transition:all var(--transition)}.example:hover{border-color:var(--b2);color:var(--b);background:var(--soft)}.categories-section{margin-top:28px;text-align:center}.categories-title{font-size:12px;color:var(--muted);margin-bottom:12px;letter-spacing:.5px}.categories-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.category-tag{display:inline-flex;align-items:center;gap:5px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:7px 13px;font-size:12px;color:var(--muted);transition:all var(--transition)}.category-tag:hover{border-color:var(--b2);color:var(--b);background:var(--soft)}.category-icon{font-size:14px;line-height:1}.categories-note{margin-top:12px;font-size:12px;color:var(--muted);opacity:.7}.primary{border:0;background:linear-gradient(135deg,#2563eb,#3b82f6,#60a5fa);color:#fff;border-radius:var(--radius-sm);padding:12px 20px;font-weight:650;cursor:pointer;box-shadow:0 6px 18px #2563eb2b;transition:all var(--transition);display:inline-flex;align-items:center;gap:6px}.primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 24px #2563eb40}.primary:disabled{opacity:.45;cursor:not-allowed}.secondary{border:1px solid #dbe3ef;background:#fff;color:#475569;border-radius:11px;padding:11px 17px;cursor:pointer;transition:all var(--transition);font-weight:500}.secondary:hover{border-color:var(--b2);color:var(--b);background:var(--soft)}.center-screen{text-align:center;padding:100px 20px}.spinner{width:44px;height:44px;border:3px solid #dbeafe;border-top-color:var(--b);border-radius:50%;margin:0 auto;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.center-screen h2{margin:20px 0 7px;font-size:22px}.center-screen p{font-size:13px;color:var(--muted)}.intent-card{max-width:760px;margin:65px auto;padding:30px}.intent-head{display:flex;gap:13px;align-items:center}.intent-icon{width:45px;height:45px;border-radius:14px;background:var(--soft);display:grid;place-items:center;color:var(--b);font-size:20px}.intent-card h2{margin:0;font-size:21px}.intent-card small{color:var(--muted);font-size:13px}.intent-body{margin-top:23px;padding:18px;background:var(--soft2);border-radius:14px;font-size:14px;line-height:1.8;color:#334155}.intent-body b{color:var(--ink)}.tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.tag{font-size:11px;color:var(--b);background:var(--soft);padding:6px 10px;border-radius:99px;font-weight:500}.intent-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:22px}.workspace-top{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:13px}.stage small{font-size:12px;color:var(--muted)}.stage strong{display:block;font-size:17px;margin-top:4px}.saved-indicator{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}.saved-dot{display:inline-block;width:7px;height:7px;background:var(--green);border-radius:50%}.progress-track{height:7px;background:#e8eef8;border-radius:99px;overflow:hidden;margin-bottom:22px}.progress-fill{height:100%;background:linear-gradient(90deg,#2563eb,#60a5fa);width:0%;transition:width .4s cubic-bezier(.4,0,.2,1);border-radius:99px}.workspace-cols{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(320px,.85fr);gap:20px}.chat-panel{padding:32px;display:flex;flex-direction:column}.chat-history{overflow-y:auto;max-height:300px;margin-bottom:16px;padding-right:8px}.chat-history::-webkit-scrollbar{width:4px}.chat-history::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}.chat-msg{display:flex;gap:12px;margin-bottom:16px;animation:fadeInUp .35s ease}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.avatar{width:34px;height:34px;flex:none;border-radius:11px;background:linear-gradient(135deg,#2563eb,#60a5fa);color:#fff;display:grid;place-items:center;font-size:14px}.avatar.user{background:linear-gradient(135deg,#64748b,#94a3b8)}.bubble{padding:15px 17px;background:#f7faff;border:1px solid #e5edf9;border-radius:3px 16px 16px;font-size:14px;line-height:1.8;color:#334155;max-width:calc(100% - 46px)}.bubble.user{background:#fff;border-color:var(--line);border-radius:16px 3px 16px 16px}.question-area{margin:0}.question-area h2{font-size:21px;margin:0 0 7px}.question-area .q-desc{font-size:13px;color:var(--muted);margin:0 0 16px}.choices{display:grid;grid-template-columns:1fr 1fr;gap:10px}.choice{border:1px solid #e1e7f0;background:#fff;border-radius:13px;padding:13px;text-align:left;cursor:pointer;transition:all var(--transition)}.choice:hover{border-color:var(--b2);background:var(--soft2)}.choice.selected{border-color:#7199ea;background:#f5f9ff;box-shadow:0 0 0 3px #2563eb0d}.choice b{font-size:13px;display:block}.choice span{display:block;font-size:11px;color:var(--muted2);margin-top:3px}.answer-input{width:100%;height:76px;margin-top:10px;border:1px solid #e1e7f0;border-radius:13px;padding:12px;resize:none;outline:0;font-size:14px;line-height:1.6;transition:border-color var(--transition)}.answer-input:focus{border-color:var(--b2);box-shadow:0 0 0 3px #2563eb14}.chat-actions{margin-top:auto;padding-top:20px;display:flex;justify-content:space-between;align-items:center;gap:10px}.chat-actions-left{display:flex;gap:8px}.req-panel{padding:23px;align-self:start;position:sticky;top:88px}.req-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.req-panel h3{margin:0;font-size:15px;font-weight:650}.pct-badge{font-size:11px;color:var(--b);background:var(--soft);padding:5px 9px;border-radius:99px;font-weight:600}.req-field{padding:13px 0;border-bottom:1px solid var(--line2)}.req-field:last-child{border-bottom:0}.req-field label{font-size:11px;color:var(--muted2);display:block;margin-bottom:5px;font-weight:500;letter-spacing:.02em}.req-field .priority-tag{font-size:9px;padding:2px 5px;border-radius:4px;margin-left:6px;font-weight:600;vertical-align:middle}.priority-tag.critical{background:#fef2f2;color:var(--red)}.priority-tag.important{background:#fffbeb;color:var(--amber)}.priority-tag.optional{background:#f0fdf4;color:var(--green)}.field-value{font-size:13px;color:#334155;line-height:1.55;border-radius:6px;padding:3px;min-height:22px;cursor:text;transition:background var(--transition)}.field-value:empty:before{content:"待确认";color:var(--muted2);font-style:italic}.field-value[contenteditable=true]:focus{outline:2px solid #bfdbfe;background:#fff}.req-note{font-size:11px;color:var(--muted2);line-height:1.6;margin-top:14px;padding-top:14px;border-top:1px solid var(--line2)}.complete-page h1{font-size:30px;margin:9px 0;letter-spacing:-.03em}.complete-desc{font-size:13px;color:var(--muted);line-height:1.7}.spec-card{margin-top:22px}.spec-head{padding:17px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.spec-status{font-size:11px;color:#16a34a;background:var(--green-bg);padding:5px 9px;border-radius:99px;font-weight:600}.spec-body{padding:23px}.spec-section{margin-bottom:20px}.spec-section:last-child{margin-bottom:0}.spec-section h3{font-size:12px;color:var(--b);margin:0 0 7px;font-weight:600;letter-spacing:.02em}.spec-section p{font-size:13px;line-height:1.8;color:#334155;margin:0;white-space:pre-wrap}.prompt-toggle{border-top:1px solid var(--line);padding:17px 20px;display:flex;justify-content:space-between;font-size:13px;font-weight:650;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background var(--transition)}.prompt-toggle:hover{background:var(--soft2)}.prompt-container{display:none;margin:0 20px 20px;border:1px solid #dfe7f2;border-radius:14px;overflow:hidden}.prompt-container.open{display:block}.prompt-bar{height:39px;background:#f8fafc;border-bottom:1px solid var(--line);padding:0 13px;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted);font-weight:700;letter-spacing:.04em}.prompt-container pre{margin:0;padding:18px;max-height:470px;overflow:auto;white-space:pre-wrap;word-break:break-word;font:12px/1.75 ui-monospace,SFMono-Regular,Menlo,monospace;color:#334155;background:#fbfdff}.prompt-container pre::-webkit-scrollbar{width:5px}.prompt-container pre::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}.complete-actions{display:flex;justify-content:space-between;margin-top:19px;align-items:center}.complete-actions-left{display:flex;gap:8px}.toast{position:fixed;left:50%;bottom:25px;transform:translate(-50%,15px);opacity:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;font-size:12px;transition:all .25s;z-index:1000;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%)}.conflicts-warning{background:#fef2f2;border:1px solid #fecaca;border-radius:10px;padding:10px 14px;font-size:12px;color:#991b1b;margin-top:10px;line-height:1.6}.generate-area{margin-top:16px;padding:16px;background:linear-gradient(135deg,var(--soft),var(--soft2));border:1px solid #dbeafe;border-radius:14px;text-align:center}.generate-area.disabled{opacity:.6;background:var(--line2);border-color:var(--line)}.generate-area p{font-size:12px;color:var(--muted);margin-bottom:10px}.generate-area.disabled p{color:var(--muted2)}@media(max-width:900px){.workspace-cols{grid-template-columns:1fr}.req-panel{position:static}.header-center{display:none}}@media(max-width:620px){main{padding:25px 14px}.hero h1{font-size:36px}.choices{grid-template-columns:1fr}.chat-panel{padding:22px;min-height:auto}.header{padding:0 16px}.complete-actions{flex-direction:column;gap:10px}.complete-actions-left{flex-direction:column;width:100%}.complete-actions-left button{width:100%}}