/* ═══════════════════════════════════════════════════════════════
   能工智人 / Human-as-a-Service —— 与主站同源
   构成主义 × 加速主义：方角 · 发丝边框 · 宣传红/芥黄/骨白 · 扁平无玻璃
   标志动效：rust 线扫光 cubic-bezier(.7,0,.2,1) · 楔形揭示 · mono 计数
   ═══════════════════════════════════════════════════════════════ */

.ia-body{
  --ia-red:var(--rev);          /* #e23725 宣传红 */
  --ia-red-2:var(--rev-2);
  --ia-yellow:var(--mustard);   /* #e0b833 芥黄 */
  --ia-amber:var(--amber);
  --ia-bone:var(--bone);
  --ia-soft:var(--rev-soft);
  --ease-sweep:cubic-bezier(.7,0,.2,1);
  --ease-out-q:cubic-bezier(.16,1,.3,1);
  background:var(--bg-0);
}

.ia{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad-x) 100px}

/* ════════ HERO ════════ */
.ia-hero{
  position:relative;overflow:hidden;
  margin:0 calc(var(--pad-x) * -1);
  padding:clamp(44px,7vw,96px) var(--pad-x) clamp(34px,4.5vw,60px);
  border-bottom:1px solid var(--line);
}
/* 构成主义底：极淡网格 + 一道芥黄/红的对角楔 */
.ia-hero-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:44px 44px;
}
.ia-hero-noise{
  position:absolute;top:0;right:0;bottom:0;width:46%;z-index:0;pointer-events:none;opacity:.9;
  background:
    repeating-linear-gradient(135deg,transparent 0 22px,rgba(226,55,37,.035) 22px 23px),
    repeating-linear-gradient(135deg,transparent 0 64px,rgba(224,184,51,.05) 64px 65px);
  mask-image:linear-gradient(90deg,transparent,#000 60%);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 60%);
}
.ia-hero-inner{position:relative;z-index:1;max-width:880px}

.ia-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--rust-3);
}
.ia-kicker::before{content:"";width:24px;height:1px;background:var(--rust)}
.ia-kicker-dot{width:6px;height:6px;background:var(--ia-red);border-radius:0;animation:iaBlink 1.4s steps(1) infinite}
@keyframes iaBlink{50%{opacity:.25}}

.ia-title{margin:24px 0 0;line-height:.94;display:flex;flex-direction:column;gap:8px}
.ia-title-zh{
  font-family:var(--cn);font-weight:900;
  font-size:clamp(50px,11vw,128px);letter-spacing:.01em;color:var(--ink-0);
  display:flex;gap:.02em;
}
.ia-title-zh span{display:inline-block;animation:iaWedge .7s var(--ease-sweep) both}
.ia-title-zh span:nth-child(2){color:var(--ia-red)}
.ia-title-zh span:nth-child(1){animation-delay:.02s}
.ia-title-zh span:nth-child(2){animation-delay:.10s}
.ia-title-zh span:nth-child(3){animation-delay:.18s}
.ia-title-zh span:nth-child(4){animation-delay:.26s}
@keyframes iaWedge{
  0%{opacity:0;transform:translateY(28%);clip-path:inset(0 0 100% 0)}
  100%{opacity:1;transform:none;clip-path:inset(0 0 0 0)}
}
.ia-title-en{
  font-family:var(--mono);font-weight:600;font-size:clamp(12px,1.5vw,17px);letter-spacing:.46em;
  color:var(--ink-2);padding-left:.12em;display:inline-flex;align-items:center;gap:12px;width:max-content;
}
.ia-title-en::after{content:"";width:9px;height:1.05em;background:var(--ia-red);animation:iaBlink 1.05s steps(1) infinite}

.ia-tagline{margin:26px 0 0;font-family:var(--cn);font-size:clamp(14px,1.7vw,18px);color:var(--ink-1);max-width:600px;line-height:1.75}
.ia-tagline em{font-style:normal;color:var(--ink-0)}
.ia-flip{color:var(--ia-red);font-weight:700}

.ia-livebar{display:flex;gap:0;margin:32px 0 0;flex-wrap:wrap;border:1px solid var(--line)}
.ia-livestat{
  position:relative;min-width:128px;padding:14px 20px;
  border-right:1px solid var(--line);background:var(--bg-1);
}
.ia-livestat:last-child{border-right:0}
.ia-livestat--ghost{background:var(--bg-0);opacity:.7}
.ia-livenum{display:block;font-family:var(--mono);font-size:30px;font-weight:600;color:var(--ink-0);font-variant-numeric:tabular-nums;line-height:1}
.ia-livestat:nth-child(1) .ia-livenum{color:var(--ia-red)}
.ia-livestat:nth-child(2) .ia-livenum{color:var(--green)}
.ia-livelabel{display:block;margin-top:8px;font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2)}

.ia-marquee{margin:22px 0 0;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:9px 0;
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.ia-marquee-track{display:inline-flex;gap:8px;white-space:nowrap;animation:iaMarquee 30s linear infinite;will-change:transform}
.ia-marquee:hover .ia-marquee-track{animation-play-state:paused}
@keyframes iaMarquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.ia-mtag{font-family:var(--mono);font-size:11px;color:var(--ink-1);padding:4px 10px;border:1px solid var(--line-2)}
.ia-mtag b{color:var(--rust-3);font-weight:600}

.ia-hero-cta{display:flex;gap:0;margin:30px 0 0;flex-wrap:wrap}

/* ════════ 按钮（复刻主站 btn-a） ════════ */
.ia-btn{
  font-family:var(--cn);font-weight:600;font-size:14px;letter-spacing:.04em;
  padding:14px 26px;display:inline-flex;align-items:center;gap:13px;cursor:pointer;text-decoration:none;
  border:1px solid var(--line-2);background:transparent;color:var(--ink-0);position:relative;
  transition:background .2s,color .2s,border-color .2s,transform .2s ease;
}
.ia-btn--primary{background:var(--ia-red);color:var(--ia-bone);border-color:var(--ia-red)}
.ia-btn--primary::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:4px;background:var(--ia-yellow);transform:scaleX(.5);transform-origin:left;transition:transform .25s var(--ease-sweep)}
.ia-btn--primary:hover{background:var(--ia-bone);color:var(--ink-rev);border-color:var(--ia-bone)}
.ia-btn--primary:hover::after{transform:scaleX(1)}
.ia-btn--ghost{background:transparent;color:var(--ink-0);border-color:var(--line-3);margin-left:-1px}
.ia-btn--ghost:hover{background:var(--hover-fill);border-color:var(--ink-1)}
.ia-btn:disabled{opacity:.4;cursor:not-allowed}
.ia-arr{width:18px;height:12px;display:inline-block;position:relative;flex:none;align-self:center;background:currentColor;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 12'%3E%3Cpath d='M1 6h15M11 1l5 5-5 5' fill='none' stroke='%23000' stroke-width='1.5' stroke-linecap='square' stroke-linejoin='miter'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 12'%3E%3Cpath d='M1 6h15M11 1l5 5-5 5' fill='none' stroke='%23000' stroke-width='1.5' stroke-linecap='square' stroke-linejoin='miter'/%3E%3C/svg%3E") center/contain no-repeat}
.ia-arr::before,.ia-arr::after{content:none!important;display:none!important}

/* ════════ TABS ════════ */
.ia-tabs{position:relative;display:flex;gap:0;margin:36px 0 24px;border-bottom:1px solid var(--line)}
.ia-tab{
  position:relative;background:none;border:0;cursor:pointer;
  font-family:var(--cn);font-weight:600;font-size:15px;color:var(--ink-2);
  padding:14px 20px;transition:color .25s;
}
.ia-tab .ia-tab-i{font-family:var(--mono);font-size:10px;color:var(--ink-3);margin-right:8px;letter-spacing:.1em;transition:color .25s}
.ia-tab:hover{color:var(--ink-1)}
.ia-tab.is-active{color:var(--ink-0)}
.ia-tab.is-active .ia-tab-i{color:var(--ia-red)}
.ia-tab-ink{position:absolute;bottom:-1px;height:2px;background:var(--ia-red);left:0;width:80px;
  transition:left .45s var(--ease-sweep),width .45s var(--ease-sweep)}

/* ════════ 登录闸 ════════ */
.ia-gate{text-align:center;padding:46px var(--pad-x);border:1px solid var(--line);background:var(--bg-1);margin-bottom:28px}
.ia-gate p{font-family:var(--cn);font-size:15px;color:var(--ink-1);margin-bottom:18px;line-height:1.7}
.ia-gate .ia-btn{margin:0 auto}

/* ════════ PANEL 切换 ════════ */
.ia-panel{display:none;animation:iaPanelIn .5s var(--ease-out-q) both}
.ia-panel.is-active{display:block}
@keyframes iaPanelIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ════════ 提问 console ════════ */
.ia-console{border:1px solid var(--line);background:var(--bg-0)}
.ia-console-head{display:flex;align-items:center;gap:9px;padding:13px 20px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--ink-2);background:var(--bg-1)}
.ia-console-dot{width:7px;height:7px;border-radius:50%;background:var(--green)}

.ia-stage{min-height:260px;max-height:58vh;overflow:auto;padding:26px 24px}
.ia-stage-empty{text-align:center;padding:38px 10px;color:var(--ink-2)}
.ia-stage-empty-mark{font-family:var(--cn);font-size:46px;font-weight:900;color:var(--ink-3);margin-bottom:16px}
.ia-stage-empty p{font-family:var(--cn);max-width:440px;margin:0 auto 10px;font-size:14px;line-height:1.8}

/* 对话 */
.ia-msg{margin:0 0 20px;animation:iaPanelIn .45s var(--ease-out-q) both}
.ia-msg-q{margin-left:auto;max-width:80%;padding:13px 17px;background:var(--bg-2);border:1px solid var(--line-2);border-left:2px solid var(--ia-red);color:var(--ink-0);font-family:var(--cn)}
.ia-msg-meta{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11px;color:var(--ink-2);margin:14px 0 9px;letter-spacing:.04em}
.ia-msg-a{max-width:90%;padding:16px 18px;background:var(--bg-1);border:1px solid var(--line)}
.ia-answer-body,.ia-answer-text{font-family:var(--cn);font-size:15px;line-height:1.85;color:var(--ink-0);white-space:pre-wrap;word-break:break-word;min-height:1.2em}

/* 流式光标：实心红方块，无辉光 */
.ia-caret{display:inline-block;width:.46ch;height:1.05em;vertical-align:-.16em;margin-left:1px;background:var(--ia-red);animation:iaBlink 1s steps(1) infinite}

/* 状态行 */
.ia-status{display:flex;align-items:center;gap:13px;padding:14px 16px;background:var(--bg-1);border:1px solid var(--line);font-family:var(--cn);font-size:14px;color:var(--ink-1)}
.ia-status .ia-spin{width:16px;height:16px;border-radius:50%;border:2px solid var(--line-3);border-top-color:var(--ia-red);animation:iaSpin .8s linear infinite;flex:none}
@keyframes iaSpin{to{transform:rotate(360deg)}}
.ia-dots{display:inline-flex;align-items:center;gap:3px;vertical-align:middle;margin-left:2px}
.ia-dots span{display:inline-block;width:4px;height:4px;border-radius:50%;background:currentColor;opacity:0.2;animation:iaDot 1.2s ease-in-out infinite}
.ia-dots span:nth-child(2){animation-delay:.2s}
.ia-dots span:nth-child(3){animation-delay:.4s}
@keyframes iaDot{0%,80%,100%{opacity:0.2}40%{opacity:1}}
.ia-status-sub{display:block;font-family:var(--mono);font-size:11px;color:var(--ink-3);margin-top:3px}

/* 智人名片 */
.ia-arsign{display:inline-flex;align-items:center;gap:8px;padding:3px 10px;border:1px solid var(--line-2);background:var(--bg-2)}
.ia-arsign-av{width:20px;height:20px;display:grid;place-items:center;font-family:var(--mono);font-size:10px;font-weight:700;background:var(--ia-red);color:var(--ia-bone);overflow:hidden}
.ia-arsign-av img{width:100%;height:100%;object-fit:cover}

/* 评分 */
.ia-rate{display:flex;align-items:center;gap:12px;margin-top:16px;flex-wrap:wrap}
.ia-stars{display:flex;gap:4px}
.ia-star{cursor:pointer;font-size:23px;line-height:1;color:var(--ink-3);transition:transform .2s var(--ease-out-q),color .15s}
.ia-star:hover,.ia-star.on{color:var(--ia-yellow);transform:scale(1.14)}
.ia-rate-tip{font-family:var(--mono);font-size:11px;color:var(--ink-2)}
.ia-eto-pill{font-family:var(--mono);font-size:11px;color:var(--ia-amber);border:1px solid var(--amber-soft);background:var(--amber-soft);padding:4px 10px}

/* ════════ composer ════════ */
.ia-composer{border-top:1px solid var(--line);padding:15px 18px;background:var(--bg-1)}
.ia-tagrow{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:12px}
.ia-tagrow--block{flex-direction:column;align-items:flex-start;width:100%}
.ia-tagrow-label{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.ia-chips{display:flex;gap:6px;flex-wrap:wrap}
.ia-chip{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11px;color:var(--rust-3);padding:4px 9px;border:1px solid var(--rust-edge);background:var(--rust-soft);animation:iaPanelIn .3s var(--ease-out-q) both}
.ia-chip x{cursor:pointer;color:var(--ink-2);font-style:normal;font-weight:700}
.ia-chip x:hover{color:var(--ia-red)}
.ia-taginput{flex:1;min-width:160px;background:none;border:0;outline:0;color:var(--ink-1);font-family:var(--mono);font-size:12px;padding:4px 0}
.ia-composer-row{display:flex;gap:10px;align-items:flex-end}
.ia-input{
  flex:1;width:100%;resize:none;background:var(--bg-0);color:var(--ink-0);
  border:1px solid var(--line-2);padding:13px 15px;font-family:var(--cn);font-size:15px;line-height:1.6;
  transition:border-color .2s;max-height:180px;border-radius:0;
}
.ia-input:focus{outline:0;border-color:var(--rust-edge)}
.ia-input::placeholder{color:var(--ink-3)}
.ia-send{
  flex:none;display:inline-flex;align-items:center;gap:9px;cursor:pointer;position:relative;
  padding:13px 20px;border:1px solid var(--ia-red);font-family:var(--cn);font-weight:700;font-size:14px;
  color:var(--ia-bone);background:var(--ia-red);transition:background .2s,color .2s,border-color .2s;
}
.ia-send::after{content:"";position:absolute;left:0;right:0;bottom:-5px;height:3px;background:var(--ia-yellow);transform:scaleX(.5);transform-origin:left;transition:transform .25s var(--ease-sweep)}
.ia-send:hover{background:var(--ia-bone);color:var(--ink-rev);border-color:var(--ia-bone)}
.ia-send:hover::after{transform:scaleX(1)}
.ia-send:disabled{opacity:.45;cursor:not-allowed}

/* ════════ 接单台 ════════ */
.ia-desk-need{text-align:center;padding:44px var(--pad-x);border:1px solid var(--line);background:var(--bg-1)}
.ia-desk-need p{font-family:var(--cn);font-size:15px;color:var(--ink-1);margin-bottom:18px}
.ia-desk-need .ia-btn{margin:0 auto}

.ia-desk-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding:16px 20px;border:1px solid var(--line);background:var(--bg-1);margin-bottom:18px}
.ia-switch{display:inline-flex;align-items:center;gap:12px;cursor:pointer}
.ia-switch input,.ia-toggle input{position:absolute;opacity:0;width:0;height:0}
/* 方形工业拨杆 */
.ia-switch-track{position:relative;width:46px;height:24px;background:var(--bg-3);border:1px solid var(--line-2);transition:background .25s,border-color .25s}
.ia-switch-thumb{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:var(--ink-2);transition:transform .35s var(--ease-sweep),background .2s}
.ia-switch input:checked + .ia-switch-track,.ia-toggle input:checked + .ia-switch-track{background:var(--rust-soft);border-color:var(--rust-edge)}
.ia-switch input:checked + .ia-switch-track .ia-switch-thumb,.ia-toggle input:checked + .ia-switch-track .ia-switch-thumb{transform:translateX(22px);background:var(--ia-red)}
.ia-switch-label{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--ink-2)}
.ia-switch-label.on{color:var(--green)}

.ia-desk-metrics{display:flex;gap:0;border:1px solid var(--line)}
.ia-metric{text-align:right;padding:8px 16px;border-right:1px solid var(--line)}
.ia-metric:last-child{border-right:0}
.ia-metric-v{display:block;font-family:var(--mono);font-size:21px;font-weight:600;color:var(--ink-0);font-variant-numeric:tabular-nums;line-height:1}
.ia-metric:first-child .ia-metric-v{color:var(--ia-amber)}
.ia-metric-k{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-top:5px}

.ia-desk-cols{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:860px){.ia-desk-cols{grid-template-columns:340px 1fr}}
.ia-col-head{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--ink-1);margin-bottom:12px;display:flex;align-items:center;gap:9px;text-transform:uppercase}
.ia-col-sub{font-family:var(--mono);font-size:10px;color:var(--ink-3);letter-spacing:.04em;text-transform:none}
.ia-desk-inbox,.ia-desk-work{border:1px solid var(--line);padding:16px;background:var(--bg-0)}

/* 派单卡 */
.ia-order{position:relative;border:1px solid var(--line-2);border-left:2px solid var(--ia-red);padding:14px;margin-bottom:12px;background:var(--bg-1);overflow:hidden;animation:iaOrderIn .5s var(--ease-out-q) both}
.ia-order::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:1px;background:var(--ia-red);transition:left .55s var(--ease-sweep)}
.ia-order:hover::before{left:100%}
@keyframes iaOrderIn{from{opacity:0;transform:translateX(-14px)}to{opacity:1;transform:none}}
.ia-order-from{font-family:var(--mono);font-size:10px;color:var(--ink-3);margin-bottom:9px;letter-spacing:.06em}
.ia-order-q{font-family:var(--cn);font-size:14px;color:var(--ink-0);line-height:1.6;margin-bottom:10px}
.ia-order-tags{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:12px}
.ia-order-acts{display:flex;gap:0}
.ia-order-acts .ia-btn{flex:1;justify-content:center;padding:9px 12px;font-size:13px}
.ia-order-timer{height:2px;background:var(--line-2);margin-top:11px;overflow:hidden}
.ia-order-timer i{display:block;height:100%;background:var(--ia-red);width:100%;transform-origin:left;animation:iaTimer 30s linear forwards}
@keyframes iaTimer{from{transform:scaleX(1)}to{transform:scaleX(0)}}
.ia-inbox-empty{text-align:center;padding:28px 10px;color:var(--ink-3);font-family:var(--mono);font-size:12px}

.ia-work-q{padding:13px 15px;background:var(--bg-2);border:1px solid var(--line-2);border-left:2px solid var(--ia-red);font-family:var(--cn);font-size:14px;line-height:1.65;color:var(--ink-0);margin-bottom:14px}
#answer-input{margin-bottom:12px}
.ia-work-foot{display:flex;align-items:center;gap:0;justify-content:flex-end}
.ia-work-tip{margin-right:auto;font-family:var(--mono);font-size:11px;color:var(--green);display:inline-flex;align-items:center;gap:7px;letter-spacing:.04em}
.ia-work-tip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);animation:iaBlink 1.2s steps(1) infinite}
.ia-work-tip.off{color:var(--ink-3)}
.ia-work-tip.off::before{background:var(--ink-3);animation:none}

/* ════════ 成为智人 ════════ */
.ia-join{max-width:660px;margin:0 auto;border:1px solid var(--line);padding:clamp(22px,4vw,40px);background:var(--bg-1)}
.ia-join-head h2{font-family:var(--cn);font-weight:700;font-size:clamp(22px,3.2vw,30px);color:var(--ink-0);margin-bottom:10px}
.ia-join-head p{font-family:var(--cn);font-size:13px;line-height:1.8;color:var(--ink-1);margin-bottom:26px}
.ia-field{display:block;margin-bottom:20px}
.ia-field-k{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);margin-bottom:9px}
.ia-toggle{display:flex;align-items:flex-start;gap:13px;cursor:pointer;margin:6px 0 28px}
.ia-toggle-text{font-family:var(--cn);font-size:14px;color:var(--ink-0);line-height:1.5}
.ia-toggle-text .dim{display:block;font-family:var(--mono);font-size:11px;margin-top:4px;color:var(--ink-2)}
.ia-join-submit{width:100%;justify-content:center;padding:15px}
.ia-join-msg{text-align:center;font-family:var(--mono);font-size:12px;margin-top:14px;min-height:1.2em;color:var(--green)}
.ia-join-msg.err{color:var(--ia-red)}

/* ════════ toast ════════ */
.ia-toast{position:fixed;left:50%;bottom:30px;transform:translate(-50%,24px);z-index:200;
  padding:13px 22px;background:var(--ink-rev);border:1px solid var(--line-3);
  font-family:var(--cn);font-size:14px;color:var(--ink-0);
  opacity:0;pointer-events:none;transition:transform .4s var(--ease-out-q),opacity .3s;max-width:88vw;text-align:center}
.ia-toast.show{opacity:1;transform:translate(-50%,0)}
.ia-toast.crit{border-color:var(--ia-yellow);border-left-width:3px}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.05s!important}
}
@media(max-width:560px){
  .ia-title-zh{font-size:clamp(44px,17vw,76px)}
  .ia-desk-bar{flex-direction:column;align-items:flex-start}
  .ia-msg-q,.ia-msg-a{max-width:100%}
}