.chat-page { display: grid; height: 100vh; grid-template-rows: auto auto minmax(0, 1fr) auto auto; padding: 28px clamp(18px, 4vw, 54px) 22px; }
.chat-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 900px; width: 100%; margin: 0 auto 18px; }
.chat-header h1 { margin: 0; font-size: 29px; font-weight: 900; }
.model-pill { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
.model-pill span { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(143, 227, 136, .08); }
/* 快捷提示：胶囊标签（对应 demo .seg-tab） */
.quick-prompts { display: flex; width: 100%; max-width: 900px; gap: 6px; margin: 0 auto 14px; overflow-x: auto; }
.quick-prompts button { flex: 0 0 auto; padding: 6px 14px; border: 1px solid var(--line); border-radius: 50px; color: var(--muted); background: rgba(255, 255, 255, .05); cursor: pointer; font-size: 12px; transition: all .22s; }
.quick-prompts button:hover { border-color: rgba(245, 196, 81, .45); color: var(--gold-1); background: rgba(245, 196, 81, .13); }
.chat-history-hint { width: 100%; max-width: 900px; margin: 0 auto 8px; color: var(--muted); font-size: 11px; }
.message-list { position: relative; width: 100%; max-width: 900px; margin: 0 auto; padding: 16px 4px 30px; overflow-y: auto; scroll-behavior: smooth; scroll-padding-top: 18px; }
.chat-history-collapsed { margin: 0 0 18px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .025); }
.chat-history-collapsed summary { padding: 9px 12px; color: var(--gold-1); cursor: pointer; font-size: 11px; }
.chat-history-collapsed .message { margin: 0 14px 20px; }
.chat-latest { position: absolute; right: 14px; bottom: 14px; z-index: 2; min-height: 34px; padding: 5px 12px; border: 1px solid rgba(245, 196, 81, .5); border-radius: 40px; color: var(--gold-1); background: rgba(13, 12, 18, .94); box-shadow: var(--shadow); cursor: pointer; font-size: 11px; }
.message { max-width: 760px; margin-bottom: 26px; animation: message-in .25s ease; }
@keyframes message-in { from { opacity: 0; transform: translateY(5px); } }
/* 用户消息：玻璃气泡（对应 demo .item 底色） */
.message-user { max-width: 680px; margin-left: auto; padding: 17px 20px; border: 1px solid var(--line); border-radius: 18px 18px 4px 18px; background: var(--card); backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur)); }
/* Mentor 消息：军师批注式金色左边线（对应 demo .advisor-note） */
.message-mentor { padding: 2px 0 2px 16px; border-left: 3px solid var(--gold-1); }
.message-followup { padding: 18px 20px; border: 1px solid rgba(245, 196, 81, .35); border-left-width: 3px; border-radius: 5px 16px 16px 5px; background: rgba(245, 196, 81, .08); }
.message-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; color: var(--gold-1); font-size: 11px; letter-spacing: .05em; }
.message-meta time { color: var(--faint); letter-spacing: 0; }
.message-content { color: #e1dbce; font-size: 14px; line-height: 1.9; white-space: pre-wrap; }
.message-user .message-content { color: var(--paper); }
.message-draft .message-content:empty::after { content: "正在整理事实与判断…"; color: var(--muted); }
.chat-welcome { display: grid; min-height: 100%; place-content: center; justify-items: center; text-align: center; color: var(--muted); }
.chat-welcome span { display: grid; width: 72px; height: 72px; margin-bottom: 20px; place-items: center; background: var(--grad); border-radius: 20px; color: var(--on-gold); font-size: 26px; font-weight: 900; box-shadow: 0 0 24px rgba(245, 196, 81, .25); }
.chat-welcome h2 { color: var(--paper); font-size: 26px; font-weight: 900; }
.chat-welcome p { max-width: 480px; line-height: 1.8; }
.mentor-status { display: flex; width: 100%; max-width: 900px; align-items: center; gap: 10px; margin: 0 auto 9px; color: var(--gold-1); font-size: 11px; }
.status-orbit { display: flex; align-items: flex-end; gap: 3px; height: 13px; }
.status-orbit i { width: 3px; height: 5px; border-radius: 2px; background: var(--gold-2); animation: pulse-line .8s ease-in-out infinite alternate; }
.status-orbit i:nth-child(2) { animation-delay: .18s; }.status-orbit i:nth-child(3) { animation-delay: .36s; }
@keyframes pulse-line { to { height: 13px; background: var(--gold-0); } }
.composer { position: relative; display: grid; width: 100%; max-width: 900px; grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; align-items: end; margin: 0 auto; padding: 10px 10px 26px; border: 1px solid rgba(245, 196, 81, .4); border-radius: 18px; background: rgba(17, 15, 24, .88); box-shadow: 0 18px 60px rgba(0, 0, 0, .34), 0 0 40px rgba(245, 196, 81, .05); backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur)); }
.composer textarea { max-height: 140px; padding: 10px 4px; border: 0; outline: 0; resize: none; color: var(--paper); background: transparent; line-height: 1.55; }
.upload-button, .send-button { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid var(--line); border-radius: 11px; cursor: pointer; }
.upload-button { color: var(--gold-1); }
.upload-button input { display: none; }
.upload-privacy-note { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.upload-privacy-consent { grid-column: 1 / -1; color: var(--paper); font-size: 11px; line-height: 1.55; }
.upload-privacy-consent input { margin-right: 7px; accent-color: var(--gold-1); }
.selected-attachments { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 6px; min-height: 18px; color: var(--muted); font-size: 11px; }
.attachment-item { display: inline-flex; align-items: center; gap: 6px; padding: 4px 7px; border: 1px solid var(--line); border-radius: 8px; color: var(--paper); }
.attachment-item button { border: 0; color: var(--gold-1); background: transparent; cursor: pointer; font-size: 11px; }
.attachment-empty { color: var(--muted); }
.send-button { border-color: transparent; color: var(--on-gold); background: var(--grad); font-size: 20px; box-shadow: 0 0 14px rgba(245, 196, 81, .28); }
.composer-note { position: absolute; right: 15px; bottom: 7px; color: #5e594f; font-size: 9px; }

/* Mentor 消息的 Markdown 渲染 */
.message-mentor .message-content > * { margin: 0 0 10px; }
.message-mentor .message-content > :last-child { margin-bottom: 0; }
.message-mentor .message-content h3 { font-size: 16.5px; }
.message-mentor .message-content h4 { font-size: 15px; }
.message-mentor .message-content h5 { font-size: 14px; }
.message-mentor .message-content h6 { font-size: 13px; color: var(--muted); }
.message-mentor .message-content h3, .message-mentor .message-content h4, .message-mentor .message-content h5, .message-mentor .message-content h6 { margin: 14px 0 7px; }
.message-mentor .message-content ul, .message-mentor .message-content ol { padding-left: 22px; }
.message-mentor .message-content li { margin: 4px 0; }
.message-mentor .message-content code { padding: 1px 6px; border-radius: 6px; background: rgba(255,255,255,.08); color: var(--gold-1); font-family: Consolas, "Courier New", monospace; font-size: 12.5px; }
.message-mentor .message-content pre { padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(0,0,0,.38); overflow-x: auto; }
.message-mentor .message-content pre code { padding: 0; border: 0; background: none; color: var(--paper); font-size: 12.5px; line-height: 1.6; white-space: pre; }
.message-mentor .message-content blockquote { padding: 2px 0 2px 12px; border-left: 2px solid var(--gold-2); color: var(--muted); }
.message-mentor .message-content a { color: var(--gold-1); text-decoration: underline; text-underline-offset: 3px; }
.message-mentor .message-content hr { border: 0; border-top: 1px solid var(--line); }
.message-mentor .message-content table { border-collapse: collapse; font-size: 13px; }
.message-mentor .message-content th, .message-mentor .message-content td { padding: 6px 11px; border: 1px solid var(--line); text-align: left; }
.message-mentor .message-content th { color: var(--gold-1); background: rgba(255,255,255,.04); font-weight: 700; }
@media (max-width: 760px) { .chat-page { height: calc(100vh - 112px); padding: 18px 12px 10px; } .chat-header .eyebrow { display: none; } .chat-header h1 { font-size: 25px; } .model-pill { display: none; } .message { margin-bottom: 20px; } .chat-history-hint { margin-bottom: 4px; } }

/* 快捷入口带入起手提示后的原草稿恢复 */
.draft-restore { width: 100%; max-width: 900px; margin: 0 auto 9px; padding: 7px 14px; border: 1px dashed rgba(245, 196, 81, .45); border-radius: 10px; color: var(--gold-1); background: rgba(245, 196, 81, .07); cursor: pointer; font-size: 12px; text-align: left; }
.draft-restore:hover { background: rgba(245, 196, 81, .15); }