.tool-hero{position:relative;overflow:hidden;padding:120px 24px 48px;background-color:#f7f5ef;background-image:radial-gradient(at 15% 15%,rgba(74,124,95,.15) 0px,transparent 50%),radial-gradient(at 85% 10%,rgba(232,163,61,.1) 0px,transparent 50%),radial-gradient(at 70% 85%,rgba(45,74,58,.1) 0px,transparent 50%);text-align:center}.tool-hero-inner{max-width:640px;margin:0 auto}.back-link{display:inline-flex;align-items:center;gap:6px;color:#8898aa;font-size:.88rem;font-weight:500;margin-bottom:20px;transition:color .2s}.back-link:hover{color:#4a7c5f}.eyebrow{display:block;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.18em}.text-forest{color:#4a7c5f}.tool-hero-title{font-size:2.6rem;font-weight:600;letter-spacing:-.03em;line-height:1.1;color:var(--ink);margin:12px 0}.tool-hero-subtitle{font-size:1.05rem;color:var(--ink-2);line-height:1.6;margin-bottom:20px}.quota-bar{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:600;padding:6px 16px;border-radius:999px;background:#4a7c5f14;border:1px solid rgba(74,124,95,.16);color:#4a7c5f;font-variant-numeric:tabular-nums}.tool-section{padding:0 24px 80px;background:#f6f9fc;min-height:50vh}.pdf-container{max-width:800px;margin:0 auto}.login-prompt{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:48px 32px;text-align:center;box-shadow:inset 0 0 0 1px #fff9,0 1px 2px #0a25400a,0 4px 16px #0a25400d;margin-top:40px;max-width:640px;margin-left:auto;margin-right:auto}.login-prompt-icon{width:64px;height:64px;border-radius:18px;background:#e8f0e9;color:#4a7c5f;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}.login-prompt-title{font-size:1.5rem;font-weight:600;color:var(--ink);margin-bottom:8px}.login-prompt-desc{font-size:.95rem;color:var(--ink-2);margin-bottom:28px}.login-prompt-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.login-prompt .btn-primary{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(180deg,#4a7c5f,#2d4a3a);color:#fff;box-shadow:0 4px 12px #4a7c5f4d;transition:all .2s}.login-prompt .btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px #4a7c5f66}.upload-zone{position:relative;background:#fff;border:2px dashed rgba(148,163,184,.45);border-radius:20px;padding:48px 32px;margin-top:40px;cursor:pointer;transition:all .3s;text-align:center;box-shadow:inset 0 0 0 1px #fff9,0 1px 2px #0a25400a,0 4px 16px #0a25400d}.upload-zone:after{content:"";position:absolute;inset:8px;border:1px solid rgba(74,124,95,.07);border-radius:14px;pointer-events:none}.upload-zone:hover,.upload-zone.dragover{border-color:#4a7c5f8c;background:#4a7c5f08}.upload-icon{width:72px;height:72px;border-radius:20px;background:#e8f0e9;color:#4a7c5f;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}.upload-text{font-size:1rem;font-weight:600;color:var(--ink);margin-bottom:6px}.upload-hint{font-size:.85rem;color:#8898aa}.upload-file-info{display:flex;align-items:center;gap:10px;justify-content:center;padding:12px 20px;background:#4a7c5f0f;border:1px solid rgba(74,124,95,.18);border-radius:12px;color:#4a7c5f;font-size:.9rem;font-weight:500}.upload-file-name{flex:1;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-remove-btn{background:none;border:none;color:#8898aa;cursor:pointer;padding:4px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:all .2s}.upload-remove-btn:hover{color:#df1b41;background:#df1b4114}.pdf-chat-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;display:flex;flex-direction:column;height:500px;margin-top:24px;box-shadow:inset 0 0 0 1px #fff9,0 1px 2px #0a25400a,0 4px 16px #0a25400d}.pdf-chat-messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px;background:radial-gradient(at 90% 0%,rgba(74,124,95,.05) 0px,transparent 45%),radial-gradient(at 10% 100%,rgba(74,124,95,.04) 0px,transparent 45%)}.pdf-chat-messages::-webkit-scrollbar{width:6px}.pdf-chat-messages::-webkit-scrollbar-thumb{background:#4a7c5f4d;border-radius:3px}.pdf-chat-welcome{text-align:center;padding:40px 20px;margin:auto;color:var(--ink-2)}.pdf-chat-welcome-icon{width:64px;height:64px;border-radius:18px;background:#e8f0e9;color:#4a7c5f;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}.pdf-chat-welcome p{font-size:.95rem}.pdf-chat-message{display:flex;gap:12px;max-width:85%;animation:chatFadeIn .3s ease}@keyframes chatFadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.pdf-chat-message.user{align-self:flex-end;flex-direction:row-reverse}.pdf-chat-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#4a7c5f;background:#e8f0e9}.pdf-chat-message.user .pdf-chat-avatar{background:linear-gradient(180deg,#4a7c5f,#2d4a3a);color:#fff}.pdf-chat-body{padding:10px 16px;border-radius:12px;line-height:1.6;background:var(--surface);border:1px solid var(--line);white-space:pre-wrap;word-break:break-word;font-size:.92rem;color:var(--ink)}.pdf-chat-message.user .pdf-chat-body{background:linear-gradient(180deg,#4a7c5f,#2d4a3a);color:#fff;border-color:transparent;box-shadow:0 4px 12px #4a7c5f40}.typing-dots{display:flex;gap:4px;padding:4px 0}.typing-dots span{width:8px;height:8px;background:#8898aa;border-radius:50%;animation:typingBounce 1.4s infinite}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{transform:translateY(0);opacity:.5}30%{transform:translateY(-8px);opacity:1}}.pdf-chat-input-area{padding:16px;border-top:1px solid var(--line);background:#fff}.pdf-chat-input-wrapper{display:flex;gap:12px}.pdf-chat-input{flex:1;padding:10px 14px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:.95rem;font-family:inherit;outline:none;transition:border-color .2s,box-shadow .2s}.pdf-chat-input:focus{border-color:#4a7c5f80;box-shadow:0 0 0 3px #4a7c5f1f}.pdf-chat-input::placeholder{color:#8898aa}.pdf-chat-send-btn{width:44px;height:44px;flex-shrink:0;background:linear-gradient(180deg,#4a7c5f,#2d4a3a);color:#fff;border:none;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #4a7c5f4d;transition:all .2s}.pdf-chat-send-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 24px #4a7c5f66}.pdf-chat-send-btn:disabled{opacity:.4;cursor:not-allowed}@media(max-width:768px){.tool-hero{padding:100px 20px 36px}.tool-hero-title{font-size:2rem}.pdf-chat-card{height:440px}.pdf-chat-message{max-width:92%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}