:root{--keyboard-height: 0px;--chat-composer-total: 124px;--app-header-height: 56px;--app-bg: #fafaf8;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px);--pad-x: clamp(14px, 4vw, 22px);--pad-y: 12px;--touch: 44px;--content-max: 720px;--font-chat: clamp(15px, 3.4vw, 17px);--font-manual-title: clamp(14px, 3vw, 15px)}@media(min-width:600px){:root{--pad-y: 14px;--content-max: 680px}}@media(min-width:900px){:root{--content-max: 720px}}.app-root{width:100%;height:100%;min-height:0;flex:1;display:flex;flex-direction:column;align-items:stretch;box-sizing:border-box;background:var(--app-bg);-webkit-tap-highlight-color:transparent;touch-action:auto}.app-frame{width:100%;max-width:var(--content-max);margin:0 auto;height:100%;min-height:0;display:flex;flex-direction:column;flex:1;box-sizing:border-box}.app-frame:not(.app-frame--chat){padding-top:var(--app-header-height)}.app-frame--chat{min-height:0;padding-top:0}@media(min-width:600px){.app-frame{border-left:1px solid rgba(0,0,0,.06);border-right:1px solid rgba(0,0,0,.06)}}.app-header{position:fixed;top:0;left:0;right:0;display:flex;align-items:center;gap:8px;flex-shrink:0;width:100%;max-width:var(--content-max);margin-left:auto;margin-right:auto;box-sizing:border-box;padding:calc(var(--pad-y) + var(--safe-top)) var(--pad-x) var(--pad-y);padding-left:calc(var(--pad-x) + var(--safe-left));padding-right:calc(var(--pad-x) + var(--safe-right));background:#fafaf8eb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:40}.app-header__logo{height:clamp(28px,7vw,36px);width:auto;max-width:min(220px,58vw);object-fit:contain;display:block}.app-btn-icon{min-width:var(--touch);min-height:var(--touch);padding:0;display:flex;align-items:center;justify-content:center;border-radius:10px;border:none;background:#fff;box-shadow:0 1px 3px #0000000f;cursor:pointer;touch-action:manipulation}.app-btn-tab{min-height:var(--touch);padding:8px 14px;border-radius:10px;border:none;background:#1a1a1a;color:#fff;font-size:clamp(12px,3vw,14px);font-weight:600;cursor:pointer;touch-action:manipulation}.app-btn-tab--icon{display:flex;align-items:center;justify-content:center;min-width:var(--touch);padding:0}.app-scroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;overscroll-behavior-y:contain;overflow-anchor:none;touch-action:pan-y;isolation:isolate;padding:var(--pad-y) var(--pad-x);padding-bottom:calc(var(--pad-y) + var(--safe-bottom));padding-left:calc(var(--pad-x) + var(--safe-left));padding-right:calc(var(--pad-x) + var(--safe-right))}.app-scroll--chat{position:fixed;left:0;right:0;top:var(--app-header-height);bottom:calc(var(--keyboard-height, 0px) + var(--chat-composer-total) + env(safe-area-inset-bottom,0px));width:100%;max-width:var(--content-max);margin-left:auto;margin-right:auto;flex:none!important;height:auto!important;min-height:0!important;z-index:5;padding:var(--pad-y) var(--pad-x);padding-bottom:calc(var(--pad-y) + 8px);padding-left:calc(var(--pad-x) + var(--safe-left));padding-right:calc(var(--pad-x) + var(--safe-right));box-sizing:border-box}.app-input-bar--chat{position:fixed;left:0;right:0;bottom:calc(var(--keyboard-height, 0px) + env(safe-area-inset-bottom,0px));width:100%;max-width:var(--content-max);margin-left:auto;margin-right:auto;z-index:25;box-sizing:border-box;padding:10px var(--pad-x) max(14px,calc(env(safe-area-inset-bottom,0px)/2 + 8px));padding-left:calc(var(--pad-x) + env(safe-area-inset-left,0px));padding-right:calc(var(--pad-x) + env(safe-area-inset-right,0px));background:#fafaf8f7;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid rgba(0,0,0,.05)}@media(min-width:600px){.app-input-bar--chat{border-left:1px solid rgba(0,0,0,.06);border-right:1px solid rgba(0,0,0,.06)}}.app-input-bar{flex-shrink:0;padding:8px var(--pad-x) max(20px,var(--safe-bottom));padding-left:calc(var(--pad-x) + var(--safe-left));padding-right:calc(var(--pad-x) + var(--safe-right))}.app-manual-search-footer{flex-shrink:0;padding:8px var(--pad-x) max(20px,var(--safe-bottom));padding-left:calc(var(--pad-x) + var(--safe-left));padding-right:calc(var(--pad-x) + var(--safe-right));background:var(--app-bg);border-top:1px solid rgba(0,0,0,.06)}.app-search-row--footer{margin-bottom:0}.app-input-row{display:flex;gap:8px;align-items:center;background:#fff;border-radius:24px;padding:6px 6px 6px 12px;border:1px solid rgba(0,0,0,.08);box-shadow:0 2px 8px #0000000a;min-height:var(--touch)}.app-input-row input[type=text]{font-size:16px!important;min-height:40px;color:#1a1a1a;caret-color:#1a1a1a;-webkit-text-fill-color:#1a1a1a;background:transparent;min-width:0;line-height:1.5;opacity:1}.app-btn-send{min-width:var(--touch);min-height:var(--touch);border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;flex-shrink:0;cursor:pointer;touch-action:manipulation}.app-btn-attach{min-width:var(--touch);min-height:var(--touch);border-radius:50%;border:none;background:#eeece8;display:flex;align-items:center;justify-content:center;cursor:pointer;touch-action:manipulation}.app-search-row{display:flex;align-items:center;gap:8px;background:#fff;border-radius:12px;padding:12px 14px;margin-bottom:12px;border:1px solid #e8e8e8;min-height:var(--touch)}.app-section-btn{width:100%;display:flex;align-items:center;gap:12px;padding:12px 14px;min-height:52px;border:none;border-radius:12px;background:#fff;cursor:pointer;text-align:left;font-size:var(--font-manual-title);color:#1a1a1a;box-shadow:0 1px 2px #0000000a}.app-sidebar-panel{position:relative;width:min(100%,320px);max-width:88vw;height:100%;background:#fafaf8;box-shadow:4px 0 24px #00000014;display:flex;flex-direction:column;padding-top:var(--safe-top)}.app-sidebar-panel .app-scroll{padding-bottom:var(--safe-bottom)}.app-sidebar-row{display:flex;align-items:stretch;gap:4px;margin-bottom:6px}.app-sidebar-row__main{flex:1;min-width:0;text-align:left;min-height:var(--touch);padding:10px 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#e0dcd4;background:#fff;font-size:14px;font-weight:600;color:#8b4513;cursor:pointer;font-family:inherit;touch-action:manipulation}.app-sidebar-delete-all:disabled{opacity:.45;cursor:not-allowed}.chat-msg-row{display:flex;flex-direction:column;gap:4px;max-width:100%}.chat-msg-row--user{align-items:flex-end}.chat-msg-row--assistant{align-items:flex-start}.chat-bubble-user{max-width:min(92%,560px);padding:12px 16px;border-radius:18px;background:#1a1a1a12;color:#1a1a1a;font-size:var(--font-chat);line-height:1.7;white-space:pre-wrap;-webkit-user-select:text;user-select:text}.chat-bubble-assistant{width:100%;max-width:100%;padding:8px 0 12px;font-size:var(--font-chat);line-height:1.75;color:#1a1a1a;-webkit-user-select:text;user-select:text}.chat-bubble-assistant .markdown-body{font-size:var(--font-chat)}.ai-loading{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:8px 0 16px;max-width:100%}.ai-loading__steam{display:flex;align-items:flex-end;gap:10px;height:28px}.ai-loading__steam-line{width:6px;height:22px;border-radius:8px 8px 2px 2px;background:linear-gradient(180deg,#1a1a1a1f,#1a1a1a05);animation:ai-steam 1.6s ease-in-out infinite;opacity:.85}.ai-loading__steam-line:nth-child(2){animation-delay:.25s;height:26px}.ai-loading__steam-line:nth-child(3){animation-delay:.5s;height:20px}@keyframes ai-steam{0%,to{transform:translateY(4px) scaleY(.65);opacity:.35}50%{transform:translateY(-6px) scaleY(1);opacity:.9}}.ai-loading__dots{display:flex;align-items:center;gap:8px;padding-left:2px}.ai-loading__dots span{width:8px;height:8px;border-radius:50%;background:#1a1a1a;opacity:.35;animation:ai-float-dot 1.2s ease-in-out infinite}.ai-loading__dots span:nth-child(2){animation-delay:.2s}.ai-loading__dots span:nth-child(3){animation-delay:.4s}@keyframes ai-float-dot{0%,to{transform:translateY(0);opacity:.35}50%{transform:translateY(-6px);opacity:1}}.ai-loading__caption{margin:0;font-size:clamp(12px,3vw,13px);color:#6b6b6b;letter-spacing:.02em}.markdown-body{font-size:var(--font-chat);line-height:1.75;color:inherit;word-break:break-word}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.markdown-body h1{font-size:1.28em;font-weight:700;margin:.75em 0 .4em;line-height:1.35}.markdown-body h2{font-size:1.18em;font-weight:700;margin:.85em 0 .4em;line-height:1.35}.markdown-body h3{font-size:1.06em;font-weight:600;margin:.7em 0 .35em;line-height:1.4}.markdown-body h4,.markdown-body h5,.markdown-body h6{font-size:1em;font-weight:600;margin:.6em 0 .3em}.markdown-body p{margin:.5em 0}.markdown-body ul,.markdown-body ol{margin:.5em 0;padding-left:1.35em}.markdown-body li{margin:.25em 0}.markdown-body li>p{margin:.25em 0}.markdown-body strong{font-weight:700}.markdown-body a{color:#2563eb;text-decoration:underline;text-underline-offset:2px}.markdown-body code{font-family:ui-monospace,Cascadia Mono,Segoe UI Mono,monospace;font-size:.9em;background:#0000000f;padding:.15em .4em;border-radius:4px}.markdown-body pre{margin:.65em 0;padding:10px 12px;background:#f0efea;border-radius:10px;overflow-x:auto;font-size:.88em;line-height:1.5}.markdown-body pre code{background:none;padding:0;font-size:inherit}.markdown-body .table-wrapper{overflow-x:auto;margin:.65em 0;-webkit-overflow-scrolling:touch}.markdown-body table{width:100%;border-collapse:collapse;font-size:.92em;min-width:min(100%,320px)}.markdown-body th,.markdown-body td{border:1px solid #e0e0dc;padding:6px 8px;text-align:left;vertical-align:top}.markdown-body th{background:#f5f5f0;font-weight:600}.markdown-body blockquote{margin:.5em 0;padding-left:.85em;border-left:3px solid #ccc;color:#555}.markdown-body hr{margin:1em 0;border:none;border-top:1px solid #e8e8e8}.markdown-body img{max-width:100%;height:auto;border-radius:.5em}.chat-empty-title{font-size:clamp(19px,5vw,26px);font-weight:600;text-align:center;line-height:1.55;color:#2a2a2a}.scroll-area{scrollbar-width:none;-ms-overflow-style:none}.scroll-area::-webkit-scrollbar{display:none}.app-root--center{min-height:100%;display:flex;align-items:center;justify-content:center;background:var(--app-bg)}.boot-text{margin:0;font-size:15px;color:#666}.login-screen{min-height:100%;width:100%;display:flex;align-items:center;justify-content:center;padding:calc(24px + var(--safe-top)) var(--pad-x) calc(24px + var(--safe-bottom));padding-left:calc(var(--pad-x) + var(--safe-left));padding-right:calc(var(--pad-x) + var(--safe-right));box-sizing:border-box;background:var(--app-bg)}.login-card{width:100%;max-width:400px;padding:28px 22px 32px;background:#fff;border-radius:16px;box-shadow:0 8px 32px #00000014;border:1px solid rgba(0,0,0,.06);box-sizing:border-box}.login-card__logo{display:block;height:clamp(32px,9vw,42px);width:auto;max-width:200px;margin:0 auto 20px;object-fit:contain}.login-card__title{margin:0 0 8px;font-size:clamp(18px,4.5vw,22px);font-weight:700;text-align:center;color:#1a1a1a}.login-card__hint{margin:0 0 22px;font-size:14px;color:#777;text-align:center;line-height:1.5}.login-form{display:flex;flex-direction:column;gap:16px}.login-form__label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:#444}.login-form__input{min-height:48px;padding:12px 14px;border-radius:12px;border:1px solid #ddd;font-size:16px;font-family:inherit;color:#1a1a1a;background:#fafaf8;box-sizing:border-box;width:100%}.login-form__input:focus{outline:none;border-color:#1a1a1a;background:#fff}.login-form__error{margin:0;font-size:13px;color:#b91c1c;line-height:1.4}.login-form__submit{min-height:48px;margin-top:4px;border:none;border-radius:12px;background:#1a1a1a;color:#fff;font-size:16px;font-weight:600;font-family:inherit;cursor:pointer;touch-action:manipulation}.login-form__submit:disabled{opacity:.6;cursor:not-allowed}.pdf-offer-bar{margin-bottom:10px;padding:12px 14px;border-radius:12px;background:#f0efea;border:1px solid rgba(26,26,26,.1)}.pdf-offer-bar__text{margin:0 0 10px;font-size:13px;line-height:1.5;color:#333}.pdf-offer-bar__actions{display:flex;flex-wrap:wrap;gap:8px}.pdf-offer-bar__btn{min-height:44px;padding:0 16px;border-radius:10px;border:1px solid #ccc;background:#fff;font-size:14px;font-weight:600;color:#333;cursor:pointer;touch-action:manipulation}.pdf-offer-bar__btn:disabled{opacity:.55;cursor:not-allowed}.pdf-offer-bar__btn--primary{background:#1a1a1a;color:#fafaf8;border-color:#1a1a1a}