:root{
  --silver-00:#FFFFFF; --silver-25:#FAFBFC; --silver-50:#F4F6F8; --silver-100:#EDF0F3;
  --silver-200:#E2E6EB; --silver-300:#CFD5DC; --silver-400:#AEB6C0; --silver-500:#8D96A3;
  --silver-600:#6E7785; --silver-700:#565E6B; --graphite-800:#2E333A; --graphite-900:#1B1F24;
  --success:#3C9A6E; --warn:#D9A03C; --danger:#C25450; --info:#5A7BB5;
  --metal:linear-gradient(135deg,#F7F9FB 0%,#E3E7EC 38%,#C9D0D8 68%,#E9EDF1 100%);
  --metal-deep:linear-gradient(140deg,#3A4048 0%,#23282E 55%,#31373F 100%);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:24px;
  --sh1:0 1px 2px rgba(27,31,36,.05),0 1px 1px rgba(27,31,36,.03);
  --sh2:0 2px 6px rgba(27,31,36,.06),0 8px 24px rgba(27,31,36,.06);
  --sh3:0 8px 16px rgba(27,31,36,.08),0 24px 48px rgba(27,31,36,.10);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none !important}
html,body{height:100%}
body{margin:0;font-family:var(--font);color:var(--graphite-800);background:var(--silver-25);font-size:15px;line-height:1.6}
button{font-family:var(--font);cursor:pointer}
a{color:inherit;text-decoration:none}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:var(--silver-300);border-radius:8px}
::-webkit-scrollbar-track{background:transparent}

/* ---------- Logo ---------- */
.logo{width:44px;height:44px;border-radius:13px;background:var(--metal);display:grid;place-items:center;flex:0 0 auto;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),inset 0 -1px 0 rgba(174,182,192,.35),var(--sh1);position:relative;overflow:hidden}
.logo svg{width:62%;height:62%}
.logo-lg{width:64px;height:64px;border-radius:20px}

/* ---------- 登录 ---------- */
.login{min-height:100dvh;display:grid;place-items:center;padding:24px;
  background:radial-gradient(1200px 600px at 20% -10%,#FFFFFF 0%,#EDF0F3 45%,#E4E8EC 100%)}
.login-card{width:min(400px,100%);background:rgba(255,255,255,.86);backdrop-filter:blur(24px) saturate(140%);
  border:1px solid var(--silver-200);border-radius:28px;box-shadow:var(--sh3);padding:32px 28px 22px;text-align:center}
.login-card h1{font-size:26px;letter-spacing:-.4px;margin:14px 0 4px;color:var(--graphite-900)}
.login-sub{color:var(--silver-500);font-size:13px;margin:0 0 26px}
.btn-primary{width:100%;height:50px;border:0;border-radius:999px;background:var(--graphite-900);color:#fff;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:center;gap:8px;transition:transform .15s,opacity .15s;box-shadow:var(--sh2)}
.btn-primary:hover{opacity:.94}
.btn-primary:active{transform:scale(.985)}
.btn-wechat{background:#07C160;box-shadow:0 8px 20px rgba(7,193,96,.25)}
.btn-wechat svg{width:20px;height:20px}
.btn-ghost{width:100%;height:46px;margin-top:10px;border:1px solid var(--silver-200);border-radius:999px;background:#fff;
  color:var(--graphite-800);font-size:14px;font-weight:600}
.btn-ghost:hover{background:var(--silver-50)}
.login-hint{min-height:18px;font-size:12px;color:var(--silver-400);margin:12px 0 0}
.login-foot{margin-top:22px;padding-top:16px;border-top:1px solid var(--silver-100);font-size:11px;color:var(--silver-400);
  display:flex;flex-direction:column;gap:6px}
.admin-link{color:var(--silver-500)}
.admin-link:hover{color:var(--graphite-900)}

/* ---------- 应用骨架 ---------- */
.app{display:flex;height:100dvh;overflow:hidden;position:relative;background:var(--silver-25)}
.sidebar{width:280px;flex:0 0 280px;background:rgba(250,251,252,.96);border-right:1px solid var(--silver-200);
  display:flex;flex-direction:column;padding:18px 14px 12px;gap:12px;z-index:40}
.brand-mini{display:flex;align-items:center;gap:10px;padding:2px 6px 8px}
.brand-name{font-size:16px;font-weight:600;color:var(--graphite-900);letter-spacing:.2px}
.brand-sub{font-size:11px;color:var(--silver-400);margin-top:2px}
.btn-new{display:flex;align-items:center;justify-content:center;gap:8px;height:44px;border:0;border-radius:12px;
  background:var(--metal);color:var(--graphite-900);font-size:14px;font-weight:600;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),var(--sh1);transition:.16s}
.btn-new:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.9),var(--sh2)}
.conv-list{flex:1;overflow:auto;display:flex;flex-direction:column;gap:2px;margin:0 -4px;padding:0 4px}
.conv-group{font-size:11px;font-weight:600;color:var(--silver-400);padding:8px 8px 4px;letter-spacing:.4px}
.conv{display:flex;align-items:center;gap:9px;height:42px;padding:0 10px;border-radius:12px;border:1px solid transparent;
  color:var(--silver-700);font-size:13.5px;text-align:left;background:transparent;width:100%;transition:.14s;min-width:0}
.conv:hover{background:var(--silver-50)}
.conv.on{background:#fff;border-color:var(--silver-200);box-shadow:var(--sh1);color:var(--graphite-900);font-weight:500}
.conv .dot{width:6px;height:6px;border-radius:50%;background:var(--silver-300);flex:0 0 auto}
.conv-call-tag{flex:0 0 auto;font-size:10.5px;font-weight:700;color:#065f46;background:#d1fae5;border-radius:6px;padding:1px 6px;line-height:1.5}
.conv.on .dot{background:var(--graphite-900)}
.conv span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv-del{margin-left:auto;color:var(--silver-300);font-size:14px;padding:0 2px;border:0;background:transparent;opacity:0}
.conv:hover .conv-del{opacity:1}
.conv-del:hover{color:var(--danger)}
.credits-mini{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:12px;background:#fff;
  border:1px solid var(--silver-200);font-size:12px;color:var(--silver-500)}
.credits-mini b{color:var(--graphite-900);font-size:14px;font-variant-numeric:tabular-nums}
.mini-link{margin-left:auto;border:0;background:transparent;color:var(--info);font-size:12px;font-weight:600;padding:2px 4px}
.nav-pc{display:flex;gap:6px;border-top:1px solid var(--silver-200);padding-top:10px}
.navpc{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;border:1px solid transparent;background:transparent;
  color:var(--silver-500);font-size:10.5px;padding:7px 0;border-radius:10px;transition:.16s}
.navpc:hover{background:var(--silver-50)}
.navpc.on{background:#fff;border-color:var(--silver-200);box-shadow:var(--sh1);color:var(--graphite-900);font-weight:600}
.sidebar-foot{border-top:1px solid var(--silver-200);padding:10px 6px 2px;display:flex;align-items:center;gap:10px}
.ava-sm{width:30px;height:30px;border-radius:50%;background:var(--metal);display:grid;place-items:center;font-size:12px;font-weight:600;color:var(--graphite-800)}
.who{min-width:0}
.who b{display:block;font-size:13px;color:var(--graphite-800);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.who>span{font-size:11px;color:var(--silver-400)}

.scrim{position:absolute;inset:0;background:rgba(27,31,36,.32);opacity:0;pointer-events:none;transition:opacity .24s;z-index:35}
.app.drawer-open .scrim{opacity:1;pointer-events:auto}

.main{flex:1;min-width:0;display:flex;flex-direction:column;position:relative;overflow:hidden}
.topbar{height:64px;flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:0 20px;z-index:20;
  background:rgba(255,255,255,.74);backdrop-filter:blur(24px) saturate(140%);border-bottom:1px solid var(--silver-200)}
.hamburger{display:none;width:44px;height:44px;border:0;background:transparent;border-radius:12px;place-items:center}
.hamburger i{display:block;width:18px;height:2px;background:var(--graphite-900);border-radius:2px;margin:2.5px 0}
.brand-head{display:flex;align-items:center;gap:10px;min-width:0}
.brand-head .logo{width:36px;height:36px;border-radius:11px}
.brand-head .t1{font-size:17px;font-weight:600;color:var(--graphite-900);white-space:nowrap}
.brand-head .t2{font-size:11px;color:var(--silver-400);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.spacer{flex:1}
.credits-pill{display:flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:999px;background:var(--silver-50);
  border:1px solid var(--silver-200);font-size:12px;color:var(--silver-500);cursor:pointer}
.credits-pill b{color:var(--graphite-900);font-variant-numeric:tabular-nums}
.icon-btn{width:40px;height:40px;border:0;background:transparent;border-radius:12px;display:grid;place-items:center;color:var(--silver-600)}
.icon-btn:hover{background:var(--silver-50);color:var(--graphite-900)}
.icon-btn.solid{background:var(--graphite-900);color:#fff;width:auto;padding:0 14px;height:36px;border-radius:999px;
  font-size:13px;font-weight:600;display:flex;gap:6px;align-items:center}

/* ---------- 三屏 ---------- */
.screen{display:none;flex:1;min-height:0;flex-direction:column}
.screen.active{display:flex}

.chat-scroll{flex:1;overflow:auto;padding:22px 20px 8px;scroll-behavior:smooth}
.chat-col{max-width:880px;margin:0 auto}
.empty-brand{display:flex;flex-direction:column;align-items:center;gap:6px;padding:6px 0 18px;text-align:center}
.empty-brand .logo{width:56px;height:56px;border-radius:18px}
.empty-brand h1{font-size:23px;font-weight:700;margin:8px 0 0;letter-spacing:-.4px;color:var(--graphite-900)}
.empty-brand p{margin:0;color:var(--silver-500);font-size:12.5px}
.caps{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;width:100%;margin-top:12px}
.cap{display:flex;align-items:center;gap:8px;height:52px;padding:0 10px;border-radius:var(--r-md);background:#fff;
  border:1px solid var(--silver-200);box-shadow:var(--sh1);transition:.18s;min-width:0;text-align:left}
.cap:hover{transform:translateY(-1px);box-shadow:var(--sh2)}
.cap .ic{width:28px;height:28px;border-radius:9px;background:var(--metal);display:grid;place-items:center;color:var(--graphite-800);flex:0 0 auto}
.cap .ic svg{width:16px;height:16px}
.cap b{font-size:13px;font-weight:600;color:var(--graphite-800);white-space:nowrap}

.msg{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.msg.user{align-items:flex-end}
.msg-bubble{max-width:82%;border-radius:var(--r-lg);padding:12px 16px;font-size:15px;line-height:1.68;position:relative;
  background:#fff;border:1px solid var(--silver-200);box-shadow:var(--sh1);border-bottom-left-radius:6px;word-break:break-word}
.msg.user .msg-bubble{background:var(--graphite-900);color:#fff;border:0;border-bottom-left-radius:20px;border-bottom-right-radius:6px;box-shadow:var(--sh2)}
.msg.assistant .msg-bubble{max-width:min(88%, 680px)}
.msg-meta{font-size:11px;color:var(--silver-400);display:flex;gap:8px;align-items:center;padding:0 2px}
.msg.user .msg-meta{justify-content:flex-end}
.reasoning{max-width:82%;border:1px dashed var(--silver-200);background:var(--silver-25);border-radius:12px;padding:8px 12px;
  font-size:12.5px;color:var(--silver-500);line-height:1.6}
.reasoning summary{cursor:pointer;color:var(--silver-500);font-weight:500}
.reasoning .r-body{margin-top:6px;white-space:pre-wrap;max-height:160px;overflow:auto}
.status-pill{display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 11px;border-radius:999px;background:var(--silver-50);
  border:1px solid var(--silver-200);color:var(--silver-500);font-size:12px}
.spin{width:11px;height:11px;border-radius:50%;border:1.6px solid var(--silver-300);border-top-color:var(--graphite-800);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.cursor{display:inline-block;width:6px;height:15px;background:var(--graphite-800);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.msg-bubble h3,.msg-bubble h4{margin:14px 0 6px;font-size:15.5px;color:var(--graphite-900)}
.msg-bubble p{margin:0 0 10px}
.msg-bubble ul,.msg-bubble ol{margin:0 0 10px;padding-left:22px}
.msg-bubble li{margin:3px 0}
.msg-bubble code{background:var(--silver-100);border-radius:5px;padding:1px 5px;font-size:13px}
.msg-bubble pre{background:var(--silver-50);border:1px solid var(--silver-200);border-radius:10px;padding:10px;overflow:auto;font-size:12.5px}
.msg-bubble table{border-collapse:collapse;width:100%;margin:8px 0;font-size:13.5px}
.msg-bubble th,.msg-bubble td{border:1px solid var(--silver-200);padding:6px 8px;text-align:left}
.msg-bubble blockquote{border-left:3px solid var(--silver-200);margin:8px 0;padding:2px 0 2px 12px;color:var(--silver-500);font-size:13.5px}
.msg-bubble .math{font-family:"Cambria Math",Georgia,"Times New Roman",serif;font-size:15.5px;letter-spacing:.2px}
.msg-bubble .math-block{display:block;text-align:center;font-family:"Cambria Math",Georgia,"Times New Roman",serif;font-size:16px;margin:6px 0}
.msg-bubble .math sup,.msg-bubble .math-block sup{font-size:10px}
.msg-bubble .math sub,.msg-bubble .math-block sub{font-size:10px}
.msg-bubble .svg-fig{background:var(--silver-25);border:1px solid var(--silver-200);border-radius:var(--r-md);
  padding:8px;margin:10px auto;width:fit-content;max-width:100%;text-align:center;line-height:0}
.msg-bubble .svg-fig svg{display:block;max-width:100%;height:auto}
/* 图上文字加一圈白色描边，标注偶尔压到线上也读得清 */
.msg-bubble .svg-fig svg text{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  paint-order:stroke;stroke:rgba(255,255,255,.9);stroke-width:2.5px;stroke-linejoin:round}
.credit-chip{font-size:10.5px;color:var(--silver-400)}

.voice-tip{max-width:880px;margin:8px auto 0;font-size:12px;color:var(--silver-500);text-align:center}
.voice-tip .wave{display:inline-flex;gap:3px;align-items:center;margin-right:6px}
.voice-tip .wave i{width:3px;background:var(--graphite-800);border-radius:3px;animation:wave 1s infinite ease-in-out}
.voice-tip .wave i:nth-child(2){animation-delay:.15s}.voice-tip .wave i:nth-child(3){animation-delay:.3s}
.voice-tip .wave i:nth-child(4){animation-delay:.45s}.voice-tip .wave i:nth-child(5){animation-delay:.6s}
@keyframes wave{0%,100%{height:6px}50%{height:18px}}

/* 页面 */
.page{flex:1;overflow:auto;padding:22px 20px 90px}
.page-col{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
#screen-profile .page-col{max-width:720px}
.page-title{display:flex;align-items:center;justify-content:space-between;gap:12px}
.page-title h2{font-size:28px;font-weight:700;margin:0;letter-spacing:-.5px;color:var(--graphite-900)}
.btn-small{height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--silver-200);background:#fff;color:var(--graphite-800);font-size:12.5px;font-weight:600}
.btn-small:hover{border-color:var(--graphite-800)}
.btn-small:disabled{opacity:.5}
.overview{border-radius:var(--r-lg);background:var(--metal-deep);color:#fff;padding:18px;box-shadow:var(--sh2)}
.ov-head{display:flex;justify-content:space-between;font-size:12px;color:rgba(255,255,255,.6)}
.ov-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:14px 0 8px}
.ov-grid .k{font-size:11px;color:rgba(255,255,255,.55)}
.ov-grid .v{font-size:24px;font-weight:700;font-variant-numeric:tabular-nums;margin-top:2px}
.ov-note{font-size:12px;color:rgba(255,255,255,.72);line-height:1.6}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin-top:4px}
.sec-head h3{font-size:17px;font-weight:600;margin:0;color:var(--graphite-900)}
.sec-head span{font-size:12px;color:var(--silver-400)}
.kp-list{display:flex;flex-direction:column;gap:10px}
.card{background:#fff;border:1px solid var(--silver-200);border-radius:var(--r-md);box-shadow:var(--sh1);padding:16px}
.empty-card{color:var(--silver-500);font-size:13px}
.kp{position:relative;padding-left:16px;background:#fff;border:1px solid var(--silver-200);border-radius:var(--r-md);box-shadow:var(--sh1);padding:14px 16px 12px}
.kp::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--danger)}
.kp.mid::before{background:var(--warn)} .kp.ok::before{background:var(--success)}
.kp-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.kp-name{font-size:15px;font-weight:600;color:var(--graphite-900)}
.kp-meta{font-size:12px;color:var(--silver-500);margin-top:4px}
.pct{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}
.pct.low{color:var(--danger)} .pct.mid{color:var(--warn)} .pct.ok{color:var(--success)}
.bar{height:6px;border-radius:999px;background:var(--silver-100);margin:10px 0 4px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--danger);border-radius:999px}
.bar.mid i{background:var(--warn)} .bar.ok i{background:var(--success)}
.kp-acts{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.btn{height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--silver-200);background:var(--silver-50);
  color:var(--graphite-800);font-size:13px;font-weight:600}
.btn:hover{background:#fff}
.btn.primary{background:var(--graphite-900);color:#fff;border-color:var(--graphite-900)}

.profile-hero{display:flex;align-items:center;gap:14px}
.ava{width:64px;height:64px;border-radius:50%;background:var(--metal);display:grid;place-items:center;font-size:22px;font-weight:700;
  color:var(--graphite-800);box-shadow:inset 0 1px 0 rgba(255,255,255,.9),var(--sh1);flex:0 0 auto}
.profile-hero .who b{font-size:19px;font-weight:600;color:var(--graphite-900);display:flex;align-items:center;gap:8px}
.tagline{font-size:12px;height:20px;padding:0 8px;border-radius:6px;background:var(--silver-100);color:var(--silver-600);
  display:inline-flex;align-items:center;font-weight:500}
.profile-hero .sub{font-size:12.5px;color:var(--silver-500);margin-top:5px}
.profile-hero .mini-link{margin-left:auto}
.wallet{border-radius:var(--r-lg);background:var(--metal);padding:18px;display:flex;align-items:center;gap:16px;
  border:1px solid rgba(255,255,255,.6);box-shadow:inset 0 1px 0 rgba(255,255,255,.9),var(--sh2)}
.wallet .lbl{font-size:11.5px;color:var(--silver-600)}
.wallet .num{font-size:30px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.6px;color:var(--graphite-900)}
.wallet .sub{font-size:11.5px;color:var(--silver-600);margin-top:2px}
.wallet .cta{margin-left:auto;height:40px;padding:0 20px;border-radius:999px;border:0;background:var(--graphite-900);color:#fff;font-size:13.5px;font-weight:600;box-shadow:var(--sh2)}
.group{background:#fff;border:1px solid var(--silver-200);border-radius:var(--r-md);box-shadow:var(--sh1);overflow:hidden}
.grow{display:flex;align-items:center;gap:12px;height:56px;padding:0 16px;cursor:pointer;transition:.14s;background:transparent;border:0;width:100%;text-align:left}
.grow + .grow,.group .grow + a.grow{border-top:1px solid var(--silver-100)}
.grow:hover{background:var(--silver-25)}
.grow .ic{width:30px;height:30px;border-radius:9px;background:var(--silver-50);display:grid;place-items:center;color:var(--silver-600);flex:0 0 auto}
.grow .ic svg{width:17px;height:17px}
.grow .t{font-size:14.5px;color:var(--graphite-800);font-weight:500}
.grow .v{margin-left:auto;font-size:12.5px;color:var(--silver-400)}
.logout{height:48px;border-radius:var(--r-md);border:1px solid var(--silver-200);background:#fff;color:var(--danger);font-size:14px;font-weight:600;box-shadow:var(--sh1)}
.foot-note{font-size:11px;color:var(--silver-400);text-align:center;line-height:1.8}

.tabbar{display:none;flex:0 0 auto;height:60px;padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.86);
  backdrop-filter:blur(24px) saturate(140%);border-top:1px solid var(--silver-200);align-items:center;justify-content:space-around;z-index:30}
.tab{display:flex;flex-direction:column;align-items:center;gap:3px;border:0;background:transparent;color:var(--silver-500);font-size:10.5px;width:33%;padding:6px 0}
.tab.on{color:var(--graphite-900);font-weight:600}

/* 弹层 */
.modal{position:fixed;inset:0;background:rgba(27,31,36,.36);display:grid;place-items:center;z-index:100;padding:20px}
.modal-card{width:min(460px,100%);max-height:82vh;display:flex;flex-direction:column;background:#fff;border-radius:24px;
  box-shadow:var(--sh3);overflow:hidden;animation:pop .2s ease-out}
@keyframes pop{from{transform:scale(.97);opacity:0}to{transform:scale(1);opacity:1}}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 10px}
.modal-head h3{margin:0;font-size:17px;font-weight:600;color:var(--graphite-900)}
.modal-close{border:0;background:var(--silver-50);width:30px;height:30px;border-radius:50%;color:var(--silver-500);font-size:13px}
.modal-body{padding:6px 20px 16px;overflow:auto;font-size:14px;color:var(--silver-700);line-height:1.7}
.modal-foot{padding:12px 20px 18px;display:flex;gap:10px;border-top:1px solid var(--silver-100)}
.modal-foot .btn{flex:1;height:44px;justify-content:center}
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%);background:var(--graphite-900);color:#fff;padding:11px 18px;
  border-radius:12px;font-size:13.5px;box-shadow:var(--sh3);z-index:200;max-width:80vw;text-align:center;animation:pop .18s}

/* 表单 */
.field{margin-bottom:12px}
.field label{display:block;font-size:12px;color:var(--silver-500);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;height:42px;border:1px solid var(--silver-200);border-radius:12px;
  padding:0 12px;font-size:14px;font-family:var(--font);color:var(--graphite-800);background:var(--silver-25);outline:0}
.field textarea{height:auto;padding:10px 12px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--graphite-900);background:#fff}
.plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.plan{border:1px solid var(--silver-200);border-radius:14px;padding:12px;text-align:left;background:#fff}
.plan:hover{border-color:var(--graphite-800)}
.plan .n{font-size:14px;font-weight:600;color:var(--graphite-900)}
.plan .p{font-size:18px;font-weight:700;margin-top:4px;font-variant-numeric:tabular-nums}
.plan .c{font-size:11.5px;color:var(--silver-500);margin-top:2px}
.plan .tag{float:right;font-size:10px;color:var(--info);background:rgba(90,123,181,.1);padding:1px 6px;border-radius:6px}
.txn{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--silver-100);font-size:13px}
.txn:last-child{border-bottom:0}
.txn .amt{font-variant-numeric:tabular-nums;font-weight:600}
.txn .amt.plus{color:var(--success)} .txn .amt.minus{color:var(--danger)}
.txn .rm{font-size:11.5px;color:var(--silver-400);margin-top:2px}

@media (max-width: 1023px){
  .sidebar{position:absolute;left:0;top:0;bottom:0;width:min(84vw,320px);transform:translateX(-102%);
    transition:transform .28s cubic-bezier(.32,.72,0,1);border-radius:0 24px 24px 0;z-index:45;box-shadow:var(--sh3);
    background:rgba(250,251,252,.92);backdrop-filter:blur(26px) saturate(150%)}
  .app.drawer-open .sidebar{transform:translateX(0)}
  .hamburger{display:grid}
  .nav-pc{display:none}
  .tabbar{display:flex}
  .topbar{height:56px;padding:0 12px}
  .brand-head .t2{display:none}
  .chat-scroll{padding:14px 16px 4px}
  .caps{grid-template-columns:1fr 1fr}
  .cap{height:48px}
  .bubble,.msg-bubble{max-width:88%}
  .page{padding:16px 16px 84px}
  .page-title h2{font-size:24px}
  .credits-pill{display:none}
}



.svg-fig.svg-broken{padding:18px 12px;color:var(--silver-500);font-size:12.5px;background:var(--silver-25)}


/* 拍照识别中浮层 */
.recognizing{position:fixed;left:50%;bottom:96px;transform:translateX(-50%);display:none;align-items:center;gap:8px;
  background:rgba(27,31,36,.92);color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;z-index:150;box-shadow:var(--sh3)}

/* ===== 对话区布局：空态整体居中，输入坞靠近功能键且更大 ===== */
.chat-body{flex:1;display:flex;flex-direction:column;min-height:0}
.screen.is-empty .chat-body{justify-content:center;padding-bottom:6vh}
.screen.is-empty .chat-scroll{flex:0 0 auto;overflow:visible;padding-top:0;padding-bottom:4px}

.caps{max-width:820px}
.cap{display:grid;grid-template-columns:28px 1fr;column-gap:10px;align-items:center;
  height:auto;min-height:58px;padding:9px 12px}
.cap .ic{grid-row:1 / span 2}
.cap b{font-size:13px;display:block}
.cap small{display:block;font-size:10.5px;color:var(--silver-400);margin-top:1px;white-space:nowrap}

/* ===== 英语朗读按钮 ===== */
.tts{display:inline-flex;align-items:center;gap:4px;height:24px;padding:0 9px;margin:0 4px;border-radius:999px;
  background:rgba(90,123,181,.1);color:var(--info);border:1px solid rgba(90,123,181,.22);font-size:11.5px;cursor:pointer;vertical-align:middle}
.tts:hover{background:rgba(90,123,181,.18)}
.tts.playing{background:var(--info);color:#fff}

/* ===== 多题识别选择 ===== */
.vq{border:1px solid var(--silver-200);border-radius:12px;padding:10px 12px;margin-bottom:8px;cursor:pointer;background:#fff;transition:.15s}
.vq:hover{border-color:var(--silver-300)}
.vq.on{border-color:var(--graphite-900);box-shadow:0 0 0 3px rgba(27,31,36,.05)}
.vq .no{display:inline-block;font-size:11px;color:var(--info);font-weight:600;margin-right:6px}
.vq .stem{font-size:13.5px;line-height:1.6;color:var(--graphite-800)}
.vq .opts{font-size:12.5px;color:var(--silver-600);margin-top:4px;line-height:1.6}
.vq .hw{font-size:12px;color:#92400e;background:#fef3c7;border-radius:8px;padding:4px 8px;margin-top:5px;line-height:1.6}
.vq .meta{font-size:11px;color:var(--silver-400);margin-top:5px}

/* ===== 批改报告（技能包输出，弹窗内） ===== */
.grade-report{font-size:13px;line-height:1.7;color:var(--graphite-800)}
.grade-report h1{font-size:16px;margin:8px 0 6px}
.grade-report h2{font-size:14px;margin:12px 0 6px;color:var(--graphite-900)}
.grade-report h3{font-size:13px;margin:10px 0 4px}
.grade-report p{margin:6px 0}
.grade-report table{border-collapse:collapse;margin:8px 0;width:100%;font-size:12.5px}
.grade-report th,.grade-report td{border:1px solid var(--silver-200);padding:5px 8px;text-align:left}
.grade-report th{background:#f8fafc}
.grade-report blockquote{margin:6px 0;padding:4px 10px;border-left:3px solid var(--silver-200);color:var(--silver-600)}

/* ===== 批改结果卡 ===== */
.gr{border:1px solid var(--silver-200);border-radius:12px;padding:10px 12px;margin-bottom:8px;background:#fff}
.gr.wrong{border-color:#fecaca;background:#fef2f2}
.gr-head{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--graphite-800)}
.gr-tag{font-size:11px;font-weight:700;color:#fff;background:#ef4444;border-radius:6px;padding:1px 7px}
.gr-tag.green{background:#16a34a}
.gr-tag.gray{background:#9ca3af}
.gr-kp{font-size:11px;color:#b45309;background:#fef3c7;border-radius:6px;padding:1px 7px}
.gr-stem{font-size:12.5px;color:var(--silver-600);margin-top:5px;line-height:1.6}
.gr-line{display:flex;gap:8px;font-size:12.5px;margin-top:5px;line-height:1.6;color:var(--graphite-800)}
.gr-line .gr-l{flex:0 0 56px;font-size:11px;color:var(--silver-400);padding-top:2px;font-weight:600}

/* ===== 实时语音通话 ===== */
.call{position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(1200px 800px at 50% 0%,#2A2F36 0%,#14171B 62%,#0B0D10 100%);color:#fff}
.call[hidden]{display:none}
.call-card{width:min(430px,94vw);display:flex;flex-direction:column;align-items:center;gap:12px;padding:26px 22px 18px;
  border-radius:28px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(26px)}
.call-ava{width:96px;height:96px;border-radius:50%;background:#fff;overflow:hidden;box-shadow:0 14px 34px rgba(0,0,0,.4)}
.call-ava img{width:100%;height:100%;object-fit:cover;display:block}
.call-name{font-size:18px;font-weight:600;letter-spacing:.2px}
.call-state{font-size:12.5px;color:rgba(255,255,255,.62)}
.call-time{font-size:13px;font-variant-numeric:tabular-nums;color:rgba(255,255,255,.82)}
.call-wave{display:flex;align-items:flex-end;gap:5px;height:46px;margin:2px 0}
.call-wave i{width:4px;border-radius:4px;background:linear-gradient(180deg,#9FB6DE,#5A7BB5);height:9px;transition:height .12s ease}
.call-wave.active i{animation:callWave .9s ease-in-out infinite}
.call-wave.active i:nth-child(2){animation-delay:.08s}
.call-wave.active i:nth-child(3){animation-delay:.16s}
.call-wave.active i:nth-child(4){animation-delay:.24s}
.call-wave.active i:nth-child(5){animation-delay:.32s}
.call-wave.active i:nth-child(6){animation-delay:.4s}
.call-wave.active i:nth-child(7){animation-delay:.48s}
@keyframes callWave{0%,100%{height:8px}50%{height:36px}}
.call-live{width:100%;min-height:104px;max-height:190px;overflow:auto;display:flex;flex-direction:column;gap:8px;margin-top:2px}
.call-line{font-size:13.5px;line-height:1.62;padding:8px 12px;border-radius:14px;max-width:94%;white-space:pre-wrap}
.call-line.me{align-self:flex-end;background:rgba(255,255,255,.16)}
.call-line.ai{align-self:flex-start;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1)}
.call-line .who{display:block;font-size:10.5px;opacity:.55;margin-bottom:2px}
.call-actions{display:flex;gap:12px;margin-top:8px;width:100%;justify-content:center}
.call-btn{height:46px;min-width:104px;border-radius:999px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);color:#fff;font-size:14px;cursor:pointer}
.call-btn:hover{background:rgba(255,255,255,.14)}
.call-btn.hang{background:#C25450;border-color:#C25450}
/* 静音中：按钮变成醒目的琥珀色，避免"以为在说话其实被静音了" */
.call-btn.on{background:#B4832B;border-color:#B4832B;color:#16181C;font-weight:600}
.call-tip{font-size:11px;color:rgba(255,255,255,.42);text-align:center;margin-top:2px}

/* ================= Harness 风格首屏 + 输入卡 ================= */
.chat-col{max-width:880px;margin:0 auto;width:100%}
.empty-brand{display:flex;flex-direction:column;align-items:center;gap:6px;padding:0;text-align:center}
.hero-logo{width:64px;height:64px;border-radius:20px;background:var(--metal);display:grid;place-items:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),var(--sh2);margin-bottom:10px}
.hero-logo svg{width:36px;height:36px}
.hero-title{font-size:32px;font-weight:700;letter-spacing:-.6px;margin:2px 0 0;display:flex;align-items:center;gap:10px;color:var(--graphite-900)}
.badge{font-size:11px;font-weight:600;color:var(--info);background:rgba(90,123,181,.12);padding:3px 8px;border-radius:8px;letter-spacing:0}
.hero-sub{font-size:13px;color:var(--silver-500);margin:6px 0 0}

.composer-wrap{flex:0 0 auto;padding:10px 20px 14px;display:flex;flex-direction:column;align-items:center;gap:8px}
.composer{width:100%;max-width:880px}
.composer-top{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:12px}
.pill{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border-radius:999px;
  border:1px solid var(--silver-200);background:#fff;color:var(--silver-600);font-size:12.5px;font-weight:500;
  cursor:pointer;transition:.16s;white-space:nowrap}
.pill:hover{border-color:var(--silver-300);color:var(--graphite-900);transform:translateY(-1px)}
.pill svg{color:var(--silver-500)}
.composer-box{background:#fff;border:1px solid var(--silver-200);border-radius:22px;padding:12px 14px 10px;
  box-shadow:0 8px 30px rgba(27,31,36,.07);transition:.18s}
.composer-box:focus-within{border-color:var(--graphite-800);box-shadow:0 0 0 4px rgba(27,31,36,.05),0 8px 30px rgba(27,31,36,.08)}
.composer-box textarea{width:100%;border:0;outline:0;resize:none;background:transparent;font:400 16px/1.62 var(--font);
  color:var(--graphite-800);min-height:52px;max-height:180px;padding:2px 2px 4px;display:block}
.composer-box textarea::placeholder{color:var(--silver-400)}
.composer-foot{display:flex;align-items:center;gap:8px;margin-top:6px}
.composer-foot .spacer{flex:1}
.icon-round{width:34px;height:34px;border-radius:50%;border:0;background:var(--silver-50);color:var(--silver-600);
  display:grid;place-items:center;cursor:pointer;transition:.15s}
.icon-round:hover{background:var(--silver-100);color:var(--graphite-900)}
/* 录音中：麦克风变红并呼吸，用户一眼能看出正在听 */
.icon-round.rec{background:rgba(194,84,80,.12);color:var(--danger);animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(194,84,80,.28)}50%{box-shadow:0 0 0 8px rgba(194,84,80,0)}}
.model-chip{font-size:11.5px;color:var(--silver-500);background:var(--silver-50);border:1px solid var(--silver-200);
  padding:5px 10px;border-radius:999px;white-space:nowrap}
.send-arrow{width:36px;height:36px;border-radius:50%;border:0;background:var(--graphite-900);color:#fff;
  display:grid;place-items:center;cursor:pointer;transition:.15s}
.send-arrow:disabled{background:var(--silver-200);color:var(--silver-400);cursor:not-allowed}
.send-arrow:not(:disabled):hover{transform:translateY(-1px)}
.composer-note{font-size:11px;color:var(--silver-400);text-align:center}

.screen.is-empty .chat-body{justify-content:center;padding-bottom:2vh}
.screen.is-empty .chat-scroll{flex:0 0 auto;overflow:visible;padding:0 20px}
.screen.is-empty .composer-wrap{padding-top:4px;background:transparent;backdrop-filter:none}
.screen.is-empty .composer-note{display:none}
.screen:not(.is-empty) .composer-top{display:none}
.screen:not(.is-empty) .composer-wrap{padding-bottom:12px}
.screen:not(.is-empty) .composer-box{box-shadow:0 4px 20px rgba(27,31,36,.06)}

@media (max-width:1023px){
  .composer-wrap{padding:8px 12px 10px}
  .composer{max-width:100%}
  /* 手机上四个分类键两行两列居中排，避免「英语听说」被裁掉 */
  .composer-top{gap:7px 6px;justify-content:center;overflow:visible;flex-wrap:wrap;margin:0 auto 10px;max-width:268px}
  .pill{flex:0 0 auto;height:30px;padding:0 11px;font-size:11.5px}
  .pill svg{width:13px;height:13px}
  .hero-title{font-size:24px}
  .hero-sub{font-size:12px}
  .screen.is-empty .chat-scroll{padding:0 16px}
  .composer-box{border-radius:20px;padding:10px 12px 8px}
  .composer-box textarea{min-height:46px;font-size:15px}
}


/* ===== 技能包路由提示 + 试卷下载 ===== */
.route-chip{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:0 0 6px 2px;
  font-size:11.5px;color:var(--silver-500)}
.route-chip i{width:5px;height:5px;border-radius:50%;background:#3C9A6E;flex:0 0 auto}
.route-chip em{font-style:normal;color:var(--silver-400);font-size:11px;max-width:420px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.tts.paper-dl{color:var(--graphite-900);background:var(--silver-100);border-color:var(--silver-200)}
.tts.paper-dl:hover{background:var(--silver-200)}
.msg-bubble hr{border:0;border-top:1px solid var(--silver-200);margin:12px 0}
/* 试卷题头操作条：长回答里下载入口一眼可见 */
.paper-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 8px 2px;font-size:12px;color:var(--silver-500)}
.paper-bar .paper-dl{height:30px;padding:0 12px;border-radius:999px;border:1px solid var(--silver-200);
  background:#fff;color:var(--graphite-900);font-size:12px;font-weight:600}
.paper-bar .paper-dl:hover{background:var(--silver-50)}
.paper-check{font-size:11.5px;color:#3C9A6E}
.paper-check.warn{color:#B4762A;cursor:help}