/* 浅色科技风（和汇报页同一套：浅蓝白底 + 细网格 + 蓝紫渐变强调） */
:root {
  --bg: #f3f6fc; --ink: #0f172a; --ink2: #334155; --mute: #64748b; --line: #dbe4f3;
  --blue: #2563eb; --purple: #7c3aed; --amber: #d97706; --red: #dc2626; --green: #15803d;
  --card: rgba(255, 255, 255, .86); --grad: linear-gradient(135deg, #2563eb, #7c3aed);
  --safe-b: env(safe-area-inset-bottom, 0px);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
body { overflow: hidden; }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(520px 380px at 8% 0%, rgba(37, 99, 235, .13), transparent 70%),
    radial-gradient(480px 360px at 100% 30%, rgba(124, 58, 237, .11), transparent 70%),
    radial-gradient(420px 320px at 30% 100%, rgba(6, 182, 212, .09), transparent 70%),
    linear-gradient(rgba(37, 99, 235, .05) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(90deg, rgba(37, 99, 235, .05) 1px, transparent 1px) 0 0 / 44px 44px; }
button { font: inherit; color: inherit; cursor: pointer; }
[hidden] { display: none !important; }

/* 内置浏览器盖层（微信/企微/飞书）：界面整个不渲染，只留引导 */
html[data-iab] body > *:not(#iabMask) { display: none !important; }
html:not([data-iab]) #iabMask { display: none; }
#iabMask { position: fixed; inset: 0; z-index: 999; display: flex; align-items: center; justify-content: center;
  padding: calc(env(safe-area-inset-top) + 24px) 16px calc(var(--safe-b) + 24px); }
#iabMask .arrow { position: absolute; top: calc(env(safe-area-inset-top) + 10px); right: 20px; font-size: 40px; line-height: 1;
  color: var(--blue); animation: iab-bounce 1.1s ease-in-out infinite; }
@keyframes iab-bounce { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(6px, -8px); } }
#iabMask .card { width: min(100%, 360px); background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  padding: 24px 20px 20px; text-align: center; box-shadow: 0 12px 36px rgba(37, 99, 235, .12); }
#iabMask h1 { margin: 0 0 8px; font-size: 21px; font-weight: 800; }
#iabMask h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
#iabMask .why { margin: 0 0 16px; font-size: 13.5px; line-height: 1.75; color: var(--mute); }
#iabMask .why b { color: var(--ink); }
#iabMask .step { display: flex; align-items: center; gap: 9px; text-align: left; font-size: 14px; background: rgba(255, 255, 255, .7);
  border: 1px solid var(--line); border-radius: 12px; padding: 11px 13px; margin: 8px 0; }
#iabMask .step i { flex: 0 0 22px; height: 22px; border-radius: 7px; background: var(--grad); color: #fff;
  font-style: normal; font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
#iabMask .step b { color: var(--blue); }
#iabMask .url { margin: 14px 0 10px; padding: 9px 11px; font: 12px/1.5 ui-monospace, Menlo, monospace; color: var(--ink2);
  background: rgba(37, 99, 235, .05); border: 1px solid var(--line); border-radius: 9px; word-break: break-all; -webkit-user-select: all; user-select: all; }
#iabMask button { width: 100%; height: 46px; border: 0; border-radius: 12px; background: var(--grad); color: #fff; font-size: 15px; font-weight: 700; }
#iabMask button:active { transform: translateY(1px); }
#iabMask .tip { margin: 14px 0 0; font-size: 12.5px; line-height: 1.7; color: var(--mute); }
#iabMask .tip b { color: var(--ink); }

.app { position: relative; z-index: 1; height: 100%; display: flex; }
.talkpane { flex: 1 1 auto; min-width: 0; height: 100%; display: flex; flex-direction: column; max-width: 720px; margin: 0 auto; }

/* 顶栏 */
.top { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px 6px; }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand b { display: block; font-size: 16px; letter-spacing: .5px; }
.brand small { display: block; color: var(--mute); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.logo { width: 34px; height: 34px; border-radius: 10px; background: var(--grad); color: #fff; font-weight: 800;
  display: grid; place-items: center; font-size: 13px; box-shadow: 0 4px 14px rgba(37, 99, 235, .3); flex: none; }
.icon { width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); font-size: 18px; flex: none; }
.icon.off { opacity: .45; }

/* 主线进度 */
.story { display: flex; gap: 6px; overflow-x: auto; padding: 4px 16px 10px; scrollbar-width: none; }
.story::-webkit-scrollbar { display: none; }
.chip { flex: none; border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: 4px 11px 4px 5px;
  font-size: 12.5px; color: var(--ink2); display: flex; align-items: center; gap: 6px; }
.chip i { font-style: normal; width: 19px; height: 19px; border-radius: 50%; display: grid; place-items: center; font-size: 11px;
  background: #e8eefb; color: var(--mute); font-weight: 700; }
.chip.told i { background: var(--grad); color: #fff; }
.chip.cur { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); color: var(--ink); }

/* 对话 */
.log { flex: 1; overflow-y: auto; padding: 6px 16px 16px; display: flex; flex-direction: column; gap: 12px; overscroll-behavior: contain; }
.msg { flex: none; max-width: 92%; animation: rise .28s ease-out; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.msg.me { align-self: flex-end; background: var(--grad); color: #fff; padding: 9px 14px; border-radius: 16px 16px 4px 16px;
  box-shadow: 0 6px 18px rgba(37, 99, 235, .22); }
.msg.me small { display: block; opacity: .75; font-size: 11px; }
.msg.ai { align-self: flex-start; position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 4px 16px 16px 16px;
  padding: 12px 14px 10px; box-shadow: 0 6px 22px rgba(15, 23, 42, .06); backdrop-filter: blur(8px); overflow: hidden; }
.msg.ai::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--grad); }
.msg.ai.out::before { background: var(--amber); }
.msg.ai.speaking { border-color: rgba(37, 99, 235, .45); box-shadow: 0 0 0 3px rgba(37, 99, 235, .1), 0 6px 22px rgba(15, 23, 42, .06); }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 6px; font-size: 12px; color: var(--mute); }
.tag { border-radius: 6px; padding: 1px 7px; background: #eef3fe; color: var(--blue); font-weight: 600; }
.tag.proof { background: #f3edff; color: var(--purple); }
.tag.llm { background: #ecfdf5; color: var(--green); }
.tag.out { background: #fff4e5; color: var(--amber); }
.say { white-space: pre-wrap; }
.acts { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.act { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 3px 10px; font-size: 12.5px; color: var(--ink2); }
.act:active { background: #eef3fe; }
.proofbox { margin-top: 8px; padding: 8px 10px; border-left: 3px solid var(--purple); background: #f8f5ff; border-radius: 0 8px 8px 0;
  font-size: 13.5px; color: var(--ink2); }
.proofbox b { color: var(--purple); font-size: 12px; display: block; }
.thinking { flex: none; align-self: flex-start; color: var(--mute); font-size: 13px; padding: 6px 4px; display: flex; gap: 8px; align-items: center; }
.dots span { display: inline-block; width: 6px; height: 6px; margin: 0 1.5px; border-radius: 50%; background: var(--blue); animation: blink 1.1s infinite; }
.dots span:nth-child(2) { animation-delay: .18s; } .dots span:nth-child(3) { animation-delay: .36s; }
@keyframes blink { 0%, 80%, 100% { opacity: .2; } 40% { opacity: 1; } }

/* 底部 */
.dock { padding: 8px 16px calc(12px + var(--safe-b)); }
.live { background: var(--card); border: 1px dashed rgba(37, 99, 235, .45); border-radius: 12px; padding: 8px 12px; margin-bottom: 8px;
  font-size: 14px; color: var(--ink2); min-height: 38px; }
.row { display: flex; gap: 10px; align-items: center; }
.talk { position: relative; flex: 1; height: 56px; border: 0; border-radius: 18px; background: var(--grad); color: #fff; font-size: 16px;
  font-weight: 600; letter-spacing: 1px; box-shadow: 0 10px 26px rgba(37, 99, 235, .3); user-select: none; -webkit-user-select: none;
  touch-action: none; overflow: hidden; }
.talk:disabled { opacity: .5; }
.talk .ring { position: absolute; inset: 0; border-radius: inherit; pointer-events: none; }
.talk.on { transform: scale(.985); }
.talk.on .ring { box-shadow: inset 0 0 0 3px rgba(255, 255, 255, .55); animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: inset 0 0 0 6px rgba(255, 255, 255, .25); } }
.typeform { flex: 1; display: flex; gap: 8px; }
.typeform input { flex: 1; min-width: 0; height: 48px; border-radius: 14px; border: 1px solid var(--line); background: #fff; padding: 0 12px; font: inherit; }
.send { border: 0; border-radius: 14px; padding: 0 16px; background: var(--grad); color: #fff; font-weight: 600; }

/* 材料：宽屏右侧常驻，窄屏从下面弹出 */
.mat { display: none; flex-direction: column; background: rgba(255, 255, 255, .9); border-left: 1px solid var(--line); }
.mat.show { display: flex; }
.mathead { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.mathead small { display: block; color: var(--mute); font-size: 11px; }
.mathead b { display: block; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 46vw; }
.matbtns { display: flex; gap: 6px; flex: none; }
.ghost { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 4px 10px; font-size: 12.5px; color: var(--ink2); text-decoration: none; }
.mat iframe { flex: 1; width: 100%; border: 0; background: var(--bg); }
@media (min-width: 1000px) {
  .talkpane { flex: 0 0 440px; max-width: 440px; margin: 0; border-right: 1px solid var(--line); }
  .mat { display: flex; flex: 1; }
  #matClose { display: none; }
}
@media (max-width: 999px) {
  .mat.show { position: fixed; inset: 8vh 0 0 0; z-index: 20; border-radius: 18px 18px 0 0; border: 1px solid var(--line);
    box-shadow: 0 -12px 40px rgba(15, 23, 42, .18); overflow: hidden; animation: up .25s ease-out; }
  @keyframes up { from { transform: translateY(40px); opacity: 0; } to { transform: none; opacity: 1; } }
}

/* 开始页 */
.start { position: fixed; inset: 0; z-index: 30; display: grid; place-items: center; padding: 16px; background: rgba(243, 246, 252, .82); backdrop-filter: blur(6px); }
.start[hidden] { display: none; }
.startcard { width: min(460px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 22px 20px 18px;
  box-shadow: 0 20px 60px rgba(37, 99, 235, .14); position: relative; overflow: hidden; }
.startcard::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--grad); }
.kicker { font-size: 12px; color: var(--blue); font-weight: 700; letter-spacing: 1px; }
.startcard h1 { margin: 6px 0 6px; font-size: 22px; line-height: 1.35; }
.lede { margin: 0 0 14px; color: var(--ink2); font-size: 14px; }
.roles { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.roles div { border: 1px solid var(--line); border-radius: 12px; padding: 8px 10px; background: #fff; }
.roles span { display: block; font-size: 11.5px; color: var(--mute); }
.roles b { font-size: 14.5px; }
.rules { margin: 0 0 16px; padding-left: 18px; color: var(--ink2); font-size: 13.5px; }
.rules b { color: var(--ink); }
.primary { width: 100%; height: 50px; border: 0; border-radius: 14px; background: var(--grad); color: #fff; font-size: 16px; font-weight: 700;
  box-shadow: 0 10px 26px rgba(37, 99, 235, .3); }
.primary:disabled { opacity: .5; }
/* 登录 / 注册 */
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin: 6px 0 14px; background: rgba(37, 99, 235, .06); border-radius: 12px; }
.tabs button { border: 0; background: none; height: 36px; border-radius: 9px; color: var(--mute); font-size: 14px; }
.tabs button.on { background: #fff; color: var(--ink); font-weight: 700; box-shadow: 0 2px 8px rgba(15, 23, 42, .08); }
.authform { display: flex; flex-direction: column; gap: 10px; }
.authform input { height: 46px; border-radius: 12px; border: 1px solid var(--line); padding: 0 12px; font: inherit; font-size: 16px; background: #fff; }
.authform input:focus { outline: none; border-color: var(--blue); }
.authform .primary { margin-top: 4px; }
.hint { margin: 10px 0 0; color: var(--mute); font-size: 12.5px; }
.userline { display: flex; align-items: center; gap: 14px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 13px; color: var(--mute); }
.userline span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.userline a { color: var(--blue); text-decoration: none; }
.introtop { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.linkbtn { border: 0; background: none; padding: 2px 0; color: var(--mute); font-size: 13px; }
/* 选汇报：每套材料一张卡 */
.decklist { display: flex; flex-direction: column; gap: 10px; }
.deckitem { display: block; width: 100%; text-align: left; border: 1px solid var(--line); border-radius: 14px; background: #fff;
  padding: 13px 14px; transition: border-color .15s, box-shadow .15s; }
.deckitem:hover, .deckitem:focus-visible { border-color: var(--blue); box-shadow: 0 6px 18px rgba(37, 99, 235, .12); outline: none; }
.deckitem:active { transform: translateY(1px); }
.deckitem b { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 16px; }
.deckitem b::after { content: "›"; color: var(--blue); font-size: 22px; line-height: 1; }
.deckitem small { display: block; margin-top: 3px; color: var(--mute); font-size: 12.5px; }
.err { color: var(--red); font-size: 13px; min-height: 1em; margin: 8px 0 0; }

.toast { position: fixed; left: 50%; bottom: calc(96px + var(--safe-b)); transform: translateX(-50%); z-index: 40; background: rgba(15, 23, 42, .88);
  color: #fff; padding: 8px 14px; border-radius: 10px; font-size: 13.5px; max-width: 86vw; }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }