:root {
  --app-bg: #070a17;
  --panel: rgba(13, 19, 43, .86);
  --panel-strong: rgba(18, 27, 57, .96);
  --line: rgba(160, 182, 255, .14);
  --line-strong: rgba(160, 182, 255, .26);
  --text: #edf2ff;
  --muted: #9ca8c8;
  --dim: #647197;
  --accent: #6fe3e8;
  --blue: #5b86ff;
  --violet: #bb8cff;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Space Grotesk", "Noto Sans SC", sans-serif;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  overflow: hidden;
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  background:
    radial-gradient(circle at 9% 0%, rgba(91, 134, 255, .14), transparent 28%),
    radial-gradient(circle at 88% 95%, rgba(111, 227, 232, .08), transparent 26%),
    var(--app-bg);
  -webkit-font-smoothing: antialiased;
}
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
a { color: inherit; text-decoration: none; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.app-shell { min-height: 100dvh; }
.app-topbar {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 9, 22, .78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.app-brand, .topbar-actions, .thread-actions, .composer-toolbar, .composer-tools { display: flex; align-items: center; }
.app-brand { gap: 11px; min-width: 210px; }
.brand-mark {
  width: 34px; height: 34px; display: grid; place-items: center; color: var(--accent);
  border: 1px solid rgba(111, 227, 232, .25); border-radius: 10px;
  background: rgba(111, 227, 232, .08); box-shadow: 0 0 24px -8px rgba(111, 227, 232, .8);
}
.brand-mark svg { width: 22px; height: 22px; }
.app-brand strong { display: block; font-family: var(--serif); font-size: 18px; line-height: 1.15; }
.app-brand small { display: block; margin-top: 3px; color: var(--dim); font: 10px var(--display); letter-spacing: .06em; }
.topbar-actions { gap: 14px; }
.connection-state { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font: 11px var(--display); }
.connection-state i, .model-dot { width: 7px; height: 7px; display: inline-block; border-radius: 50%; background: #7cf2c0; box-shadow: 0 0 11px rgba(124, 242, 192, .9); }
.icon-button, .new-chat-button, .tool-button, .send-button {
  display: grid; place-items: center; cursor: pointer; color: var(--muted); background: transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease), transform .25s var(--ease);
}
.icon-button { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 9px; }
.icon-button:hover, .tool-button:hover { color: var(--accent); border-color: rgba(111, 227, 232, .42); background: rgba(111, 227, 232, .08); }
.icon-button svg, .new-chat-button svg, .tool-button svg, .send-button svg { width: 18px; height: 18px; }
.topbar-home { color: var(--muted); font-size: 13px; transition: color .25s var(--ease); }
.topbar-home:hover { color: var(--accent); }
.app-grid { height: calc(100dvh - 72px); display: grid; grid-template-columns: 270px minmax(0, 1fr) 250px; }
.session-panel, .inspector-panel { min-width: 0; background: rgba(8, 12, 29, .7); }
.session-panel { display: flex; flex-direction: column; padding: 24px 16px 16px; border-right: 1px solid var(--line); }
.inspector-panel { padding: 40px 22px 24px; border-left: 1px solid var(--line); }
.panel-heading, .chat-heading, .drawer-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.eyebrow { margin: 0 0 9px; color: var(--accent); font: 10px var(--display); letter-spacing: .18em; }
.panel-heading h1, .chat-heading h2, .drawer-heading h2 { margin: 0; font-family: var(--serif); font-weight: 600; }
.panel-heading h1 { font-size: 20px; }
.chat-heading h2 { font-size: 23px; }
.new-chat-button { width: 36px; height: 36px; border: 1px solid rgba(111, 227, 232, .3); border-radius: 9px; color: var(--accent); background: rgba(111, 227, 232, .08); }
.new-chat-button:hover { transform: translateY(-1px); background: rgba(111, 227, 232, .16); }
.search-box { height: 38px; display: flex; align-items: center; gap: 9px; margin-top: 25px; padding: 0 11px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255, 255, 255, .035); }
.search-box svg { width: 16px; height: 16px; color: var(--dim); }
.search-box input { width: 100%; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 12px; }
.search-box input::placeholder { color: var(--dim); }
.session-list { min-height: 0; flex: 1; overflow-y: auto; margin: 22px -5px 0; padding: 0 5px; scrollbar-width: thin; }
.session-empty { padding: 28px 10px; text-align: center; color: var(--dim); font-size: 12px; line-height: 1.7; }
.session-item { position: relative; display: flex; align-items: flex-start; gap: 10px; padding: 12px 10px; cursor: pointer; border: 1px solid transparent; border-radius: 8px; transition: background-color .25s var(--ease), border-color .25s var(--ease); }
.session-item + .session-item { margin-top: 3px; }
.session-item:hover { background: rgba(255, 255, 255, .04); }
.session-item.is-active { border-color: rgba(111, 227, 232, .17); background: linear-gradient(90deg, rgba(91, 134, 255, .16), rgba(111, 227, 232, .05)); }
.session-item::before { content: ""; width: 5px; height: 5px; flex: none; margin-top: 7px; border-radius: 50%; background: var(--dim); }
.session-item.is-active::before { background: var(--accent); box-shadow: 0 0 10px rgba(111, 227, 232, .8); }
.session-item-content { min-width: 0; flex: 1; }
.session-item-title { overflow: hidden; color: var(--muted); font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.session-item.is-active .session-item-title { color: var(--text); }
.session-item-meta { margin-top: 5px; color: var(--dim); font: 10px var(--display); }
.session-delete { display: none; width: 22px; height: 22px; margin: -2px -4px 0 0; cursor: pointer; border: 1px solid var(--line); border-radius: 6px; color: var(--dim); background: transparent; }
.session-item:hover .session-delete { display: grid; place-items: center; }
.session-delete:hover { color: #ff9aaf; border-color: rgba(255, 154, 175, .4); }
.session-delete svg { width: 12px; height: 12px; }
.panel-footer { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-top: 15px; border-top: 1px solid var(--line); }
.privacy-note { display: flex; align-items: center; gap: 8px; color: var(--dim); font-size: 10px; line-height: 1.5; }
.privacy-note span { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 9px rgba(111, 227, 232, .8); }
.privacy-note b { color: var(--muted); font-weight: 400; }
.text-button { padding: 5px 0; cursor: pointer; color: var(--dim); background: transparent; font-size: 11px; }
.text-button:hover { color: #ff9aaf; }
.chat-panel { min-width: 0; display: flex; flex-direction: column; background: rgba(11, 16, 37, .34); }
.chat-heading { min-height: 86px; padding: 20px 34px; border-bottom: 1px solid var(--line); }
.thread-actions { gap: 7px; }
.conversation { min-height: 0; width: min(860px, 100%); flex: 1; overflow-y: auto; margin: 0 auto; padding: 38px 34px 20px; scrollbar-width: thin; }
.welcome { max-width: 660px; margin: 5vh auto 0; text-align: center; }
.welcome-orbit { width: 68px; height: 68px; display: grid; place-items: center; margin: 0 auto 22px; color: var(--accent); border: 1px solid rgba(111, 227, 232, .3); border-radius: 20px; background: radial-gradient(circle, rgba(111, 227, 232, .2), rgba(91, 134, 255, .08)); box-shadow: 0 0 50px -18px rgba(111, 227, 232, .75); font-family: var(--serif); font-size: 29px; }
.welcome h3 { margin: 0; font-family: var(--serif); font-size: clamp(24px, 3vw, 35px); font-weight: 600; }
.welcome h3 em { color: var(--accent); font-style: normal; }
.welcome p { max-width: 430px; margin: 12px auto 0; color: var(--muted); line-height: 1.8; }
.message { display: flex; align-items: flex-start; gap: 12px; max-width: 82%; margin: 0 0 27px; }
.message.user { margin-left: auto; flex-direction: row-reverse; }
.message-avatar { width: 30px; height: 30px; display: grid; place-items: center; flex: none; border-radius: 9px; background: linear-gradient(135deg, var(--blue), var(--accent)); color: #05101a; font-family: var(--serif); font-size: 13px; }
.message.user .message-avatar { color: var(--text); background: rgba(255, 255, 255, .1); }
.message-content { min-width: 0; }
.message-role { margin: 0 0 6px; color: var(--dim); font: 10px var(--display); letter-spacing: .08em; }
.message.user .message-role { text-align: right; }
.message-bubble { padding: 14px 17px; color: var(--muted); border: 1px solid var(--line); border-radius: 4px 13px 13px 13px; background: rgba(255, 255, 255, .045); line-height: 1.8; white-space: pre-wrap; overflow-wrap: anywhere; }
.message.user .message-bubble { color: var(--text); border-color: rgba(91, 134, 255, .28); border-radius: 13px 4px 13px 13px; background: rgba(91, 134, 255, .14); }
.message-bubble p { margin: 0; }
.typing-dots { display: inline-flex; gap: 4px; padding: 4px 0; }
.typing-dots i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); animation: typeDot 1s ease-in-out infinite; }
.typing-dots i:nth-child(2) { animation-delay: .15s; }.typing-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes typeDot { 0%, 60%, 100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }
.composer-wrap { width: min(860px, 100%); margin: 0 auto; padding: 0 34px 19px; }
.quick-actions { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 11px; scrollbar-width: none; }
.quick-actions button { flex: none; padding: 7px 11px; cursor: pointer; color: var(--muted); border: 1px solid var(--line); border-radius: 7px; background: rgba(255, 255, 255, .03); font-size: 11px; transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease); }
.quick-actions button:hover { color: var(--accent); border-color: rgba(111, 227, 232, .35); background: rgba(111, 227, 232, .07); }
.composer { padding: 13px 14px 10px; border: 1px solid var(--line-strong); border-radius: 12px; background: rgba(5, 9, 25, .78); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .05), 0 14px 36px -28px rgba(91, 134, 255, .7); }
#message-input { display: block; width: 100%; min-height: 27px; max-height: 150px; resize: none; overflow-y: auto; outline: 0; border: 0; color: var(--text); background: transparent; line-height: 1.65; }
#message-input::placeholder { color: var(--dim); }
.composer-toolbar { justify-content: space-between; gap: 12px; margin-top: 8px; }
.composer-tools { min-width: 0; gap: 5px; }
.tool-button { width: 30px; height: 30px; border: 1px solid transparent; border-radius: 7px; }
.composer-hint { margin-left: 7px; color: var(--dim); font-size: 10px; white-space: nowrap; }
.send-button { width: 34px; height: 34px; flex: none; border-radius: 8px; color: #061018; background: linear-gradient(135deg, var(--blue), var(--accent)); }
.send-button:hover { transform: translateY(-1px); box-shadow: 0 0 23px -6px rgba(111, 227, 232, .85); }
.send-button:disabled { cursor: wait; opacity: .5; transform: none; box-shadow: none; }
.composer-disclaimer { margin: 9px 0 0; text-align: center; color: var(--dim); font-size: 10px; }
.inspector-intro { padding-bottom: 27px; border-bottom: 1px solid var(--line); }
.assistant-orbit { position: relative; width: 70px; height: 70px; display: grid; place-items: center; margin-bottom: 27px; border: 1px solid rgba(111, 227, 232, .25); border-radius: 50%; color: var(--accent); background: radial-gradient(circle, rgba(111, 227, 232, .18), transparent 68%); box-shadow: 0 0 38px -14px rgba(111, 227, 232, .8); font: 25px var(--serif); }
.assistant-orbit::before, .assistant-orbit::after { content: ""; position: absolute; border: 1px solid rgba(111, 227, 232, .23); border-radius: 50%; }
.assistant-orbit::before { inset: -8px 10px; transform: rotate(42deg); }.assistant-orbit::after { inset: 10px -8px; transform: rotate(-42deg); }
.assistant-orbit span { position: absolute; width: 4px; height: 4px; right: 2px; top: 13px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.inspector-intro h2 { margin: 0; font-family: var(--serif); font-size: 26px; line-height: 1.28; font-weight: 600; }.inspector-intro h2 em { color: var(--accent); font-style: normal; }
.inspector-intro > p:last-child { margin: 14px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.capability-list { padding: 20px 0; border-bottom: 1px solid var(--line); }
.capability-list > div { display: flex; align-items: center; gap: 11px; padding: 9px 0; }.capability-icon { color: var(--accent); font: 10px var(--display); }.capability-list p { margin: 0; }.capability-list b, .capability-list small { display: block; }.capability-list b { font-size: 12px; font-weight: 500; }.capability-list small { margin-top: 2px; color: var(--dim); font-size: 10px; }
.model-card { margin-top: 22px; padding: 14px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255, 255, 255, .03); }.model-card > div { display: flex; align-items: center; gap: 8px; }.model-card b { flex: 1; font: 12px var(--display); }.model-arrow { color: var(--dim); }.model-card small { display: block; margin-top: 7px; padding-left: 15px; color: var(--dim); font-size: 10px; }
.inspector-tip { display: flex; gap: 10px; margin-top: 24px; padding: 13px 0; color: var(--dim); font-size: 11px; line-height: 1.7; }.inspector-tip span { color: var(--accent); font-size: 19px; }.inspector-tip p { margin: 0; }
.settings-drawer { position: fixed; inset: 0; z-index: 20; visibility: hidden; opacity: 0; transition: opacity .3s var(--ease), visibility .3s; }.settings-drawer.is-open { visibility: visible; opacity: 1; }.drawer-backdrop { position: absolute; inset: 0; background: rgba(2, 4, 13, .65); backdrop-filter: blur(8px); }.drawer { position: absolute; top: 0; right: 0; width: min(420px, 100%); height: 100%; padding: 30px 28px; overflow-y: auto; border-left: 1px solid var(--line-strong); background: var(--panel-strong); box-shadow: -30px 0 80px -40px rgba(0,0,0,.8); transform: translateX(20px); transition: transform .35s var(--ease); }.settings-drawer.is-open .drawer { transform: none; }.drawer-heading h2 { font-size: 23px; }.drawer-description { margin: 26px 0; color: var(--muted); font-size: 13px; line-height: 1.8; }.settings-form { display: grid; gap: 17px; }.settings-form label { display: grid; gap: 7px; color: var(--muted); font-size: 12px; }.settings-form input { width: 100%; height: 40px; padding: 0 11px; outline: 0; border: 1px solid var(--line); border-radius: 7px; color: var(--text); background: rgba(255,255,255,.04); }.settings-form input:focus { border-color: rgba(111,227,232,.6); box-shadow: 0 0 0 3px rgba(111,227,232,.08); }.optional { color: var(--dim); font-size: 10px; }.settings-note { padding: 11px; color: var(--dim); border: 1px solid var(--line); border-radius: 7px; background: rgba(255,255,255,.025); font-size: 11px; line-height: 1.7; }.drawer-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 10px; }.secondary-button, .primary-button { padding: 10px 17px; cursor: pointer; border-radius: 7px; font-size: 12px; transition: transform .25s var(--ease), background-color .25s var(--ease); }.secondary-button { color: var(--muted); background: rgba(255,255,255,.06); }.primary-button { color: #051018; background: linear-gradient(135deg, var(--blue), var(--accent)); font-weight: 700; }.secondary-button:hover, .primary-button:hover { transform: translateY(-1px); }
.toast { position: fixed; left: 50%; bottom: 25px; z-index: 30; max-width: min(90vw, 420px); padding: 10px 14px; pointer-events: none; color: var(--text); border: 1px solid var(--line-strong); border-radius: 7px; background: rgba(13, 19, 43, .94); box-shadow: 0 14px 40px -20px rgba(0,0,0,.8); opacity: 0; transform: translate(-50%, 10px); transition: opacity .25s var(--ease), transform .25s var(--ease); font-size: 12px; }.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
@media (max-width: 1100px) { .app-grid { grid-template-columns: 240px minmax(0, 1fr); }.inspector-panel { display: none; } }
@media (max-width: 700px) { body { overflow: auto; }.app-topbar { height: 62px; padding: 0 15px; }.app-brand { min-width: 0; }.app-brand small, .connection-state, .topbar-home { display: none; }.app-grid { height: calc(100dvh - 62px); display: block; }.session-panel { display: none; }.chat-heading { min-height: 70px; padding: 15px 16px; }.chat-heading h2 { font-size: 20px; }.conversation { padding: 24px 16px 14px; }.composer-wrap { padding: 0 12px 12px; }.composer-hint { display: none; }.message { max-width: 94%; }.welcome { margin-top: 8vh; }.quick-actions button { font-size: 10px; }.drawer { width: 100%; }.new-chat-button { display: none; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; } }

/* 修复（2026-09-12）：右侧能力面板内容高于视口时没有滚动条，下方内容被 body 的 overflow:hidden 裁掉 */
.inspector-panel { overflow-y: auto; scrollbar-width: thin; }

/* 滚动范围限定在聊天栏内部（2026-09-12）：页面整体固定不滚动，只有对话区独立滚动 */
.chat-panel { min-height: 0; }
.conversation,
.session-list { scrollbar-width: thin; scrollbar-color: rgba(146, 168, 255, .3) transparent; }
.conversation { overscroll-behavior: contain; }
.conversation::-webkit-scrollbar,
.session-list::-webkit-scrollbar { width: 9px; }
.conversation::-webkit-scrollbar-track,
.session-list::-webkit-scrollbar-track { background: transparent; }
.conversation::-webkit-scrollbar-thumb,
.session-list::-webkit-scrollbar-thumb { border: 2px solid transparent; border-radius: 6px; background: rgba(146, 168, 255, .28); background-clip: content-box; }
.conversation::-webkit-scrollbar-thumb:hover,
.session-list::-webkit-scrollbar-thumb:hover { background: rgba(146, 168, 255, .48); background-clip: content-box; }