:root{--ri-font-body:var(--font-body,"Inter",system-ui,sans-serif);--ri-font-display:var(--font-display,"Instrument Serif",Georgia,serif);--ri-ink:var(--ink,#10203a);--ri-muted:var(--muted,#66768f);--ri-line:var(--line,#dbe4f1);--ri-surface:rgba(255,255,255,0.9);--ri-surface-alt:#f7f9fc;--ri-surface-soft:#eef3fb;--ri-blue-700:var(--blue-700,#3b6de0);--ri-blue-900:var(--blue-900,#2648a8);--ri-blue-soft:#dfe9ff;--ri-shell-height:560px}.ri-layout{width:100%;max-width:1180px;margin:0 auto;padding:24px 20px 20px;box-sizing:border-box}.ri-workspace{display:grid;grid-template-columns:182px minmax(0,1fr);gap:8px;align-items:start}.ri-sidebar{align-self:start;height:var(--ri-shell-height);min-height:0;max-height:var(--ri-shell-height);padding:14px 14px 12px;margin-top:0;margin-right:0;border:1px solid rgba(218,228,242,.88);border-radius:24px;background:linear-gradient(180deg,rgba(255,255,255,.74),rgba(247,250,255,.96));box-shadow:0 14px 40px rgba(32,61,122,.08);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.ri-sidebar,.ri-sidebar-top{display:flex;flex-direction:column;gap:12px}.ri-sidebar-heading{display:flex;flex-direction:column;gap:6px}.ri-sidebar-kicker-row,.ri-sidebar-title-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.ri-sidebar-actions{display:flex;flex-direction:column;align-items:flex-start;gap:0}.ri-sidebar-saved{display:inline-flex;align-items:center;gap:5px;color:rgba(28,154,86,.82);font:500 11px/1 var(--ri-font-body);white-space:nowrap}.ri-sidebar-kicker{margin:0 0 6px;color:var(--ri-muted);font:700 11px/1.2 var(--ri-font-body);letter-spacing:.14em;text-transform:uppercase}.ri-sidebar-title{margin:0;color:var(--ri-ink);font:600 1.05rem/1.25 var(--ri-font-body)}.ri-sidebar-new{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:42px;padding:0 14px;border:1px solid rgba(190,206,232,.95);border-radius:999px;background:rgba(255,255,255,.92);color:var(--ri-ink);font:600 13px/1 var(--ri-font-body);cursor:pointer;transition:background .16s,border-color .16s,transform .16s}.ri-sidebar-new:hover{background:var(--ri-surface-soft);border-color:rgba(128,157,217,.8);transform:translateY(-1px)}.ri-history-list{display:flex;flex-direction:column;gap:10px;min-height:0;flex:1;overflow-y:auto;padding-right:2px}.ri-history-list::-webkit-scrollbar{width:4px}.ri-history-list::-webkit-scrollbar-thumb{background:rgba(185,198,221,.9);border-radius:999px}.ri-history-empty{margin:0;padding:14px;border:1px dashed rgba(197,210,231,.95);border-radius:18px;color:var(--ri-muted);font:500 13px/1.55 var(--ri-font-body);background:rgba(255,255,255,.68)}.ri-history-item{display:flex;flex-direction:column;gap:6px;width:100%;padding:14px 15px;border:1px solid transparent;border-radius:18px;background:rgba(255,255,255,.72);color:inherit;text-align:left;cursor:pointer;transition:background .16s,border-color .16s,box-shadow .16s,transform .16s}.ri-history-item:hover{border-color:rgba(191,207,233,.98);background:rgba(255,255,255,.96);transform:translateY(-1px)}.ri-history-item.active{border-color:rgba(121,153,222,.9);background:linear-gradient(180deg,rgba(235,242,255,.96),rgba(248,250,255,.98));box-shadow:0 10px 24px rgba(52,91,177,.12)}.ri-history-item-title{color:var(--ri-ink);font:600 13px/1.35 var(--ri-font-body)}.ri-history-item-preview{display:none}.ri-shell{display:flex;flex-direction:column;gap:10px;min-width:0}.ri-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.ri-header-copy{min-width:0}.ri-title{margin:0 0 10px;color:var(--ri-ink);font-family:var(--ri-font-display);font-size:clamp(2rem,2.9vw,3rem);font-weight:400;line-height:1.04;letter-spacing:-.035em}.ri-desc{margin:0;max-width:56ch;color:var(--ri-muted);font:400 15px/1.7 var(--ri-font-body)}.ri-chat-shell{display:flex;flex-direction:column;height:var(--ri-shell-height);min-height:0;max-height:var(--ri-shell-height);border:1px solid rgba(215,226,241,.92);border-radius:24px;background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(248,250,255,.98));box-shadow:0 24px 60px rgba(28,57,118,.1),inset 0 1px 0 rgba(255,255,255,.8);overflow:hidden}.ri-chat-topbar{display:flex;align-items:center;gap:10px;min-height:52px;padding:0 20px;border-bottom:1px solid rgba(219,229,242,.9);background:rgba(249,251,255,.88);color:var(--ri-muted);font:600 12px/1 var(--ri-font-body);letter-spacing:.02em}.ri-chat-status-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#3cc785,#1f9d64);box-shadow:0 0 0 4px rgba(60,199,133,.15)}.ri-empty{display:flex;align-items:center;justify-content:flex-start;flex:1;padding:42px 24px 24px}.ri-empty-hint{margin:0;max-width:40ch;color:var(--ri-muted);font:500 14px/1.75 var(--ri-font-body);text-align:left}.ri-messages{display:flex;flex-direction:column;gap:18px;flex:1;min-height:0;padding:18px 18px 10px;overflow-y:auto;background:rgba(248,250,255,.52)}.ri-messages::-webkit-scrollbar{width:6px}.ri-messages::-webkit-scrollbar-thumb{background:rgba(194,205,223,.95);border-radius:999px}.ri-msg{display:flex;align-items:flex-start;gap:12px;width:100%}.ri-msg-user{justify-content:flex-end}.ri-avatar{flex-shrink:0;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.96);border:1px solid rgba(214,224,238,.96);display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 8px 18px rgba(45,82,175,.12)}.ri-avatar-image{width:100%;height:100%;object-fit:cover;display:block}.ri-msg-stack{display:flex;flex-direction:column;gap:6px;width:min(100%,760px)}.ri-msg-user .ri-msg-stack{align-items:flex-end}.ri-msg-meta{padding:0 6px;color:var(--ri-muted);font:700 11px/1.2 var(--ri-font-body);text-transform:uppercase;letter-spacing:.08em}.ri-bubble{max-width:min(70%,760px);padding:16px 18px;border-radius:24px;font:400 15px/1.78 var(--ri-font-body);box-sizing:border-box;overflow-wrap:anywhere}.ri-msg-assistant .ri-bubble{background:rgba(255,255,255,.98);border:1px solid rgba(214,224,238,.96);color:var(--ri-ink);box-shadow:0 12px 32px rgba(25,48,97,.07)}.ri-msg-user .ri-bubble{background:linear-gradient(180deg,#567fef,#4069da);color:#fff;box-shadow:0 14px 34px rgba(58,94,193,.24)}.ri-bubble p{margin:0 0 8px}.ri-bubble p:last-child{margin:0}.ri-bubble-media{margin:0 0 10px}.ri-bubble-image{display:block;width:100%;max-width:340px;border-radius:16px;object-fit:cover;background:rgba(255,255,255,.18)}.ri-typing{display:inline-flex;align-items:center;gap:6px;min-width:70px}.ri-typing span{width:8px;height:8px;border-radius:50%;background:rgba(104,124,157,.75);animation:ri-typing-bounce 1.1s infinite}.ri-typing span:nth-child(2){animation-delay:.16s}.ri-typing span:nth-child(3){animation-delay:.32s}@keyframes ri-typing-bounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}.ri-panel{border-top:1px solid rgba(218,228,241,.9);background:rgba(255,255,255,.94)}.ri-chips{display:flex;flex-wrap:wrap;gap:8px;padding:10px 16px 6px}.ri-chip{display:inline-flex;align-items:center;justify-content:center;min-height:30px;padding:0 12px;border:1px solid rgba(211,221,236,.95);border-radius:999px;background:rgba(255,255,255,.9);color:var(--ri-muted);font:600 12px/1 var(--ri-font-body);cursor:pointer;white-space:nowrap;transition:background .16s,border-color .16s,color .16s,box-shadow .16s}.ri-chip:hover{background:rgba(244,247,255,.98);border-color:rgba(149,174,226,.95);color:var(--ri-blue-900)}.ri-chip.active{background:var(--ri-blue-soft);border-color:rgba(108,141,217,.96);color:var(--ri-blue-900);box-shadow:0 6px 16px rgba(85,120,207,.14)}.ri-img-preview{position:relative;display:inline-block;margin:2px 18px 0;border:1px solid rgba(214,224,238,.95);border-radius:16px;overflow:hidden;box-shadow:0 10px 24px rgba(27,51,104,.08)}.ri-img-thumb{display:block;max-width:100%;max-height:140px;object-fit:contain;background:var(--ri-surface-alt)}.ri-img-remove{position:absolute;top:8px;right:8px;width:24px;height:24px;border:none;border-radius:50%;background:rgba(15,25,35,.72);color:#fff;font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer}.ri-file-preview{display:flex;align-items:center;gap:12px;margin:4px 16px 0;padding:12px 14px;border:1px solid rgba(214,224,238,.95);border-radius:18px;background:linear-gradient(180deg,rgba(248,251,255,.98),rgba(241,246,255,.94));box-shadow:0 10px 24px rgba(27,51,104,.08)}.ri-doc-chip-icon,.ri-file-preview-icon{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(180deg,#5f84ea,#3f69da);color:#fff;font:800 11px/1 var(--ri-font-body);letter-spacing:.08em;flex-shrink:0}.ri-doc-chip-copy,.ri-file-preview-copy{display:flex;flex-direction:column;min-width:0;gap:3px}.ri-doc-chip-copy strong,.ri-file-preview-copy strong{color:var(--ri-ink);font:700 13px/1.35 var(--ri-font-body);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ri-doc-chip-copy span,.ri-file-preview-copy span{color:var(--ri-muted);font:500 11px/1.4 var(--ri-font-body)}.ri-file-preview-remove{width:30px;height:30px;border:1px solid rgba(214,224,238,.95);border-radius:999px;background:rgba(255,255,255,.96);color:var(--ri-muted);font:700 14px/1 var(--ri-font-body);cursor:pointer;flex-shrink:0}.ri-doc-chip{display:flex;align-items:center;gap:10px;margin:0 0 12px;padding:10px 12px;border-radius:18px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2)}.ri-msg-user .ri-doc-chip-copy span,.ri-msg-user .ri-doc-chip-copy strong{color:#fff}.ri-textarea{display:block;width:calc(100% - 32px);max-width:none;min-height:36px;max-height:56px;margin:0 16px;padding:8px 16px;border:none;outline:none;resize:none;background:transparent;color:var(--ri-ink);font:400 14px/1.45 var(--ri-font-body);box-sizing:border-box}.ri-textarea::placeholder{color:rgba(104,120,145,.82)}.ri-textarea:not(:focus){caret-color:transparent}.ri-textarea:disabled{opacity:.62;cursor:not-allowed}.ri-toolbar{justify-content:space-between;gap:12px;padding:6px 14px 10px}.ri-toolbar,.ri-toolbar-left{display:flex;align-items:center}.ri-toolbar-left{gap:6px;flex:1;min-width:0}.ri-send{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border:none;border-radius:999px;background:linear-gradient(180deg,#547df0,#4068d8);color:#fff;font:700 13px/1 var(--ri-font-body);white-space:nowrap;cursor:pointer;box-shadow:0 12px 28px rgba(61,97,195,.25);transition:transform .16s,box-shadow .16s,opacity .16s}.ri-send:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 16px 34px rgba(61,97,195,.28)}.ri-send:disabled{opacity:.48;cursor:not-allowed;box-shadow:none}.ri-send-spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:ri-spin .7s linear infinite}@keyframes ri-spin{to{transform:rotate(1turn)}}.ri-hint{margin:0;color:var(--ri-muted);font:500 11.5px/1.3 var(--ri-font-body);text-align:center;opacity:.72}.ri-toolbar-left .import-bar{padding:0;background:transparent;border:none;box-shadow:none}.ri-toolbar-left .import-bar-actions{gap:6px}.ri-toolbar-left .import-btn{min-height:34px;padding:0 12px;border:1px solid rgba(213,223,238,.95);border-radius:999px;background:rgba(247,250,255,.95);color:var(--ri-muted);font-size:12px;transition:background .16s,border-color .16s,color .16s}.ri-toolbar-left .import-btn:hover{background:rgba(239,245,255,.98);border-color:rgba(146,171,221,.95);color:var(--ri-blue-900)}.rm-content h2,.rm-content h3,.rm-content h4{margin:0 0 10px;color:#1b2a44;font-family:var(--ri-font-body)!important;font-size:17px;font-weight:600;line-height:1.35;letter-spacing:-.01em;text-decoration:none!important;border:0!important;box-shadow:none!important;font-style:normal!important}.rm-content h2+p,.rm-content h3+p,.rm-content h4+p{margin-top:0}.rm-content p{margin:0 0 10px}.rm-content ol,.rm-content ul{margin:8px 0;padding-left:18px}.rm-content li{margin-bottom:6px}.rm-content strong{font-weight:700}@media (max-width:1100px){.ri-workspace{grid-template-columns:1fr;gap:14px}.ri-chat-shell,.ri-sidebar{height:auto;max-height:none}.ri-chat-shell{min-height:520px}.ri-history-list{max-height:220px}}@media (max-width:720px){.ri-layout{padding:16px 12px 14px;gap:16px}.ri-chat-shell,.ri-sidebar{border-radius:22px}.ri-header{flex-direction:column;gap:10px}.ri-session-bar{padding-top:0}.ri-messages{padding:18px 14px 12px}.ri-bubble{max-width:88%;font-size:14px}.ri-textarea{min-height:84px;padding-left:16px;padding-right:16px}.ri-toolbar{flex-direction:column;align-items:stretch}.ri-send,.ri-toolbar-left{width:100%}}