/* =========================================================
   Lumina 启明学堂 · 设计系统
   ========================================================= */
:root{
  --bg:#070c16;
  --bg-2:#0a1120;
  --bg-3:#0e1729;
  --panel:rgba(255,255,255,.042);
  --panel-2:rgba(255,255,255,.07);
  --panel-solid:#0d1524;
  --line:rgba(255,255,255,.085);
  --line-strong:rgba(255,255,255,.17);
  --text:#e9eefb;
  --text-2:#a6b4cc;
  --text-3:#6e7f9c;
  --a1:#5eead4;
  --a2:#818cf8;
  --a3:#f0abfc;
  --a1-soft:rgba(94,234,212,.13);
  --a2-soft:rgba(129,140,248,.15);
  --warm:#fbbf24;
  --ok:#34d399;
  --bad:#fb7185;
  --shadow:0 24px 70px rgba(0,0,0,.45);
  --shadow-sm:0 8px 24px rgba(0,0,0,.25);
  --radius:18px;
  --radius-sm:12px;
  --sidebar-w:252px;
  --topbar-h:74px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

html[data-theme="light"]{
  --bg:#f2f5fa;
  --bg-2:#ffffff;
  --bg-3:#e9eef7;
  --panel:#ffffff;
  --panel-2:#f5f8fd;
  --panel-solid:#ffffff;
  --line:rgba(19,40,73,.10);
  --line-strong:rgba(19,40,73,.20);
  --text:#10203a;
  --text-2:#4d5f7c;
  --text-3:#8494ae;
  --a1-soft:rgba(13,148,136,.10);
  --a2-soft:rgba(99,102,241,.10);
  --shadow:0 24px 60px rgba(19,40,73,.12);
  --shadow-sm:0 8px 24px rgba(19,40,73,.08);
}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","Segoe UI","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:14.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 420px at 8% -6%, rgba(129,140,248,.16), transparent 65%),
    radial-gradient(620px 380px at 96% 4%, rgba(94,234,212,.12), transparent 62%),
    radial-gradient(700px 500px at 55% 110%, rgba(240,171,252,.07), transparent 68%);
}
html[data-theme="light"] body::before{opacity:.5}
h1,h2,h3,h4,p{margin:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
::selection{background:rgba(94,234,212,.28)}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:9px}
::-webkit-scrollbar-track{background:transparent}

/* ========== 品牌 ========== */
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;flex:none}
.brand-mark svg{width:30px;height:30px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;letter-spacing:.3px;font-weight:750}
.brand-text em{font-style:normal;font-size:10.5px;letter-spacing:2.4px;color:var(--text-3);margin-top:3px}
.brand-lg .brand-mark{width:44px;height:44px}
.brand-lg .brand-mark svg{width:42px;height:42px}
.brand-lg .brand-text strong{font-size:22px}
.brand-lg .brand-text em{font-size:11px}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;border-radius:12px;
  font-size:14px;font-weight:650;white-space:nowrap;
  border:1px solid transparent;transition:background .16s,border-color .16s,color .16s,transform .1s;
}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px}
.btn-primary{background:linear-gradient(120deg,var(--a1),#7dd3fc 52%,var(--a2));color:#05121f;box-shadow:0 10px 26px rgba(94,234,212,.18)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{border-color:var(--line-strong);background:transparent;color:var(--text)}
.btn-ghost:hover{background:var(--panel-2);border-color:var(--a1)}
.btn-soft{background:var(--panel-2);border-color:var(--line);color:var(--text)}
.btn-soft:hover{border-color:var(--line-strong)}
.btn-accent{background:var(--a2-soft);color:var(--a2);border-color:rgba(129,140,248,.35)}
.btn-danger{background:rgba(251,113,133,.12);color:var(--bad);border-color:rgba(251,113,133,.28)}
.btn-block{width:100%}
.btn-sm{height:34px;padding:0 13px;font-size:12.5px;border-radius:9px}
.btn-sm svg{width:15px;height:15px}
.btn-lg{height:50px;font-size:15px;border-radius:14px}
.btn[disabled]{opacity:.45;pointer-events:none}
.icon-btn{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);border:1px solid transparent;transition:.16s}
.icon-btn:hover{background:var(--panel-2);color:var(--text);border-color:var(--line)}

/* ========== 通用卡片 / 标签 / 进度 ========== */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;position:relative;overflow:hidden;
}
html[data-theme="dark"] .card{backdrop-filter:blur(14px)}
.card-hover{transition:border-color .18s,background .18s}
.card-hover:hover{border-color:var(--line-strong);background:var(--panel-2)}
.card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:18px}
.card-head h3{font-size:15.5px;font-weight:700;letter-spacing:.2px}
.card-head p{font-size:12.5px;color:var(--text-3);margin-top:3px}
.card-link{font-size:12.5px;color:var(--a1);display:inline-flex;align-items:center;gap:4px;font-weight:600}
.card-link svg{width:14px;height:14px}
.card-link:hover{text-decoration:underline}

.chip{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);font-size:12.5px;font-weight:600;
  background:var(--panel);transition:.16s;white-space:nowrap;
}
.chip:hover{border-color:var(--line-strong);color:var(--text)}
.chip.active{background:var(--a1-soft);border-color:rgba(94,234,212,.45);color:var(--a1)}
.chip-dot{width:7px;height:7px;border-radius:50%;background:currentColor}

.tag{
  display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:7px;
  font-size:11px;font-weight:650;letter-spacing:.3px;
  background:var(--panel-2);color:var(--text-2);border:1px solid var(--line);
}
.tag-a1{background:var(--a1-soft);color:var(--a1);border-color:rgba(94,234,212,.3)}
.tag-a2{background:var(--a2-soft);color:var(--a2);border-color:rgba(129,140,248,.3)}
.tag-warm{background:rgba(251,191,36,.12);color:var(--warm);border-color:rgba(251,191,36,.28)}
.tag-ok{background:rgba(52,211,153,.12);color:var(--ok);border-color:rgba(52,211,153,.3)}

.bar{height:7px;border-radius:999px;background:var(--panel-2);overflow:hidden}
.bar > i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--a1),var(--a2));transition:width .3s var(--ease)}
.bar-sm{height:5px}

.muted{color:var(--text-3)}
.accent{color:var(--a1)}
.num{font-variant-numeric:tabular-nums;letter-spacing:.2px}

.section-gap{display:grid;gap:20px}
.row{display:flex;align-items:center;gap:10px}
.spread{display:flex;align-items:center;justify-content:space-between;gap:14px}
.stack{display:grid;gap:10px}
.empty{
  padding:38px 18px;text-align:center;color:var(--text-3);font-size:13px;
  border:1px dashed var(--line);border-radius:var(--radius-sm);
}

/* ========== 登录注册 ========== */
.auth-screen{position:relative;z-index:1;min-height:100vh;display:grid;grid-template-columns:1.18fr .82fr}
.auth-visual{
  position:relative;display:flex;align-items:center;justify-content:center;
  padding:56px 60px;overflow:hidden;
  background:
    radial-gradient(900px 620px at 20% 10%,rgba(94,234,212,.14),transparent 60%),
    radial-gradient(700px 520px at 85% 75%,rgba(129,140,248,.18),transparent 62%),
    linear-gradient(160deg,#08111f,#070c16 55%,#0a1424);
  border-right:1px solid var(--line);
}
html[data-theme="light"] .auth-visual{background:linear-gradient(155deg,#0b1728,#10233c 60%,#0c1c30)}
.auth-grid{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(680px 520px at 30% 40%,#000 25%,transparent 78%);
}
.auth-orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;animation:orbFloat 12s ease-in-out infinite}
.orb-a{width:360px;height:360px;background:rgba(94,234,212,.3);top:-80px;left:-60px}
.orb-b{width:420px;height:420px;background:rgba(129,140,248,.32);bottom:-120px;right:-40px;animation-delay:-5s}
@keyframes orbFloat{0%,100%{transform:translate(0,0)}50%{transform:translate(26px,-22px)}}
.auth-visual-inner{position:relative;z-index:2;max-width:520px;width:100%}
.auth-headline{font-size:clamp(34px,4vw,50px);line-height:1.18;font-weight:780;letter-spacing:-.5px;margin-top:44px}
.auth-headline span{background:linear-gradient(100deg,var(--a1),#7dd3fc 45%,var(--a2));-webkit-background-clip:text;background-clip:text;color:transparent}
.auth-sub{color:#9fb0ca;font-size:15px;line-height:1.85;margin-top:18px;max-width:440px}
.auth-stats{display:flex;gap:38px;margin-top:34px}
.auth-stats div{display:flex;flex-direction:column}
.auth-stats b{font-size:27px;font-weight:780;letter-spacing:-.2px;color:#eaf2ff;font-variant-numeric:tabular-nums}
.auth-stats span{font-size:12px;color:#7f92ad;margin-top:2px;letter-spacing:.6px}
.auth-float-card{
  margin-top:42px;max-width:370px;padding:18px 20px;border-radius:16px;
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(16px);box-shadow:0 20px 50px rgba(0,0,0,.35);
  animation:floatCard 7s ease-in-out infinite;
}
@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.afc-top{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:1.2px;color:#8fa2bd;text-transform:uppercase}
.afc-dot{width:6px;height:6px;border-radius:50%;background:var(--a1);box-shadow:0 0 0 4px rgba(94,234,212,.14)}
.afc-row{display:flex;align-items:center;gap:12px;margin-top:14px}
.afc-ic{width:36px;height:36px;border-radius:10px;background:rgba(251,191,36,.14);color:var(--warm);display:grid;place-items:center}
.afc-row b{display:block;font-size:14px;color:#eef4ff}
.afc-row small{font-size:11.5px;color:#8598b4}
.afc-bars{display:flex;align-items:flex-end;gap:7px;height:52px;margin-top:16px}
.afc-bars i{flex:1;border-radius:4px;background:rgba(255,255,255,.1)}
.afc-bars i.on{background:linear-gradient(180deg,var(--a1),rgba(94,234,212,.35))}
.auth-footnote{position:absolute;left:60px;bottom:30px;font-size:11.5px;letter-spacing:2.6px;color:#5c6f8a;z-index:2}

.auth-panel{
  display:flex;align-items:center;justify-content:center;padding:48px 44px;
  background:var(--bg-2);position:relative;
}
html[data-theme="light"] .auth-panel{background:#fff}
.auth-panel-inner{width:100%;max-width:392px}
.auth-tabs{display:flex;gap:4px;padding:4px;border-radius:13px;background:var(--panel-2);border:1px solid var(--line);margin-bottom:32px}
.auth-tab{flex:1;height:38px;border-radius:9px;font-size:13.5px;font-weight:650;color:var(--text-3);transition:.18s}
.auth-tab.active{background:var(--bg-3);color:var(--text);box-shadow:var(--shadow-sm)}
html[data-theme="dark"] .auth-tab.active{background:rgba(255,255,255,.09)}
.auth-form h2{font-size:26px;font-weight:740;letter-spacing:-.3px}
.auth-form-sub{color:var(--text-3);font-size:13px;margin:8px 0 26px}
.field{display:block;margin-bottom:16px}
.field > span{display:block;font-size:12px;font-weight:650;color:var(--text-2);margin-bottom:7px;letter-spacing:.3px}
.field-control{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 13px;
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  transition:border-color .16s,box-shadow .16s;
}
.field-control:focus-within{border-color:rgba(94,234,212,.55);box-shadow:0 0 0 3px rgba(94,234,212,.10)}
.field-control > svg{width:17px;height:17px;color:var(--text-3);flex:none}
.field-control input{flex:1;min-width:0;height:100%;background:none;border:none;outline:none;font-size:14px}
.field-control input::placeholder{color:var(--text-3);opacity:.75}
.field-eye{width:26px;height:26px;display:grid;place-items:center;color:var(--text-3);border-radius:6px}
.field-eye:hover{color:var(--text)}
.field-eye svg{width:16px;height:16px}
.form-error{min-height:18px;font-size:12px;color:var(--bad);margin:-4px 0 10px}
.auth-form .btn-block{margin-top:4px}
.auth-divider{display:flex;align-items:center;gap:12px;color:var(--text-3);font-size:11.5px;margin:20px 0}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:var(--line)}
.auth-hint{font-size:11.5px;color:var(--text-3);text-align:center;margin-top:16px}

/* ========== 应用布局 ========== */
.app-shell{position:relative;z-index:1;display:flex;min-height:100vh}
.sidebar{
  width:var(--sidebar-w);flex:none;position:sticky;top:0;height:100vh;
  display:flex;flex-direction:column;gap:16px;padding:22px 16px 18px;
  background:rgba(9,16,30,.78);backdrop-filter:blur(20px);
  border-right:1px solid var(--line);z-index:40;
}
html[data-theme="light"] .sidebar{background:rgba(255,255,255,.88)}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:0 6px}
.sidebar-close{display:none}
.nav{display:flex;flex-direction:column;gap:3px;overflow-y:auto;flex:1;margin:0 -4px;padding:0 4px}
.nav-label{font-size:10.5px;letter-spacing:2px;color:var(--text-3);text-transform:uppercase;padding:16px 10px 7px;font-weight:650}
.nav-label:first-child{padding-top:2px}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:10px 11px;border-radius:11px;
  color:var(--text-2);font-size:13.5px;font-weight:600;position:relative;
  border:1px solid transparent;transition:background .15s,color .15s,border-color .15s;
}
.nav-item svg{width:18px;height:18px;color:var(--text-3);transition:color .15s}
.nav-item:hover{background:var(--panel-2);color:var(--text)}
.nav-item:hover svg{color:var(--text-2)}
.nav-item.active{background:linear-gradient(90deg,var(--a1-soft),rgba(129,140,248,.08));color:var(--text);border-color:rgba(94,234,212,.22)}
.nav-item.active svg{color:var(--a1)}
.nav-item.active::before{content:"";position:absolute;left:-5px;top:9px;bottom:9px;width:2.5px;border-radius:3px;background:var(--a1)}
.nav-tag{margin-left:auto;font-style:normal;font-size:9.5px;padding:2px 6px;border-radius:5px;background:var(--a2-soft);color:var(--a2);font-weight:700;letter-spacing:.5px}

.sidebar-card{
  border:1px solid var(--line);border-radius:14px;padding:14px;
  background:linear-gradient(150deg,rgba(94,234,212,.10),rgba(129,140,248,.10));
}
.sidebar-card .sc-title{font-size:12px;font-weight:700;display:flex;align-items:center;gap:7px}
.sidebar-card .sc-title svg{width:15px;height:15px;color:var(--warm)}
.sidebar-card p{font-size:11.5px;color:var(--text-2);margin:6px 0 10px;line-height:1.6}
.sidebar-user{border-top:1px solid var(--line);padding-top:14px}
.su-main{display:flex;align-items:center;gap:10px;padding:6px;border-radius:12px;cursor:pointer}
.su-main:hover{background:var(--panel-2)}
.avatar{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;flex:none;
  font-size:13px;font-weight:750;color:#06121f;
  background:linear-gradient(140deg,var(--a1),var(--a2));
}
.avatar-sm{width:28px;height:28px;border-radius:9px;font-size:11.5px}
.su-text{min-width:0;flex:1}
.su-text b{display:block;font-size:13px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.su-text span{font-size:10.5px;color:var(--text-3)}
.sidebar-scrim{display:none}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  height:var(--topbar-h);flex:none;position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 28px;
  background:rgba(8,14,26,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);
}
html[data-theme="light"] .topbar{background:rgba(255,255,255,.82)}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.menu-btn{display:none}
.page-eyebrow{font-size:10.5px;letter-spacing:1.8px;text-transform:uppercase;color:var(--text-3);font-weight:650}
.page-title{font-size:19px;font-weight:730;letter-spacing:-.2px;margin-top:1px}
.topbar-right{display:flex;align-items:center;gap:9px}
.topbar-search{position:relative;display:flex;align-items:center}
.topbar-search svg{position:absolute;left:11px;width:16px;height:16px;color:var(--text-3);pointer-events:none}
.topbar-search input{
  width:218px;height:38px;padding:0 12px 0 34px;border-radius:10px;
  background:var(--panel);border:1px solid var(--line);outline:none;font-size:12.5px;
  transition:width .2s,border-color .2s;
}
.topbar-search input:focus{width:270px;border-color:rgba(94,234,212,.45)}
.search-results{
  position:absolute;top:46px;right:0;width:344px;padding:6px;z-index:80;
  background:var(--bg-2);border:1px solid var(--line-strong);border-radius:13px;
  box-shadow:var(--shadow);max-height:368px;overflow:auto;display:none;
}
.search-results.open{display:block}
.search-results .sr-item{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:9px}
.search-results .sr-item:hover{background:var(--panel-2)}
.search-results .sr-dot{width:7px;height:7px;border-radius:2px;flex:none}
.search-results .sr-text{flex:1;min-width:0}
.search-results .sr-text b{display:block;font-size:12px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search-results .sr-text span{display:block;font-size:10.5px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search-results .sr-type{flex:none;font-size:9.5px;color:var(--text-3);border:1px solid var(--line);padding:1px 6px;border-radius:5px}
.search-results .sr-empty{padding:18px 12px;font-size:12px;color:var(--text-3);text-align:center}
.streak-pill,.xp-pill{display:flex;align-items:center;gap:6px;height:34px;padding:0 11px;border-radius:9px;border:1px solid var(--line);background:var(--panel)}
.streak-pill svg{width:15px;height:15px;color:var(--warm)}
.streak-pill b{font-size:12.5px;font-variant-numeric:tabular-nums}
.xp-pill svg{width:15px;height:15px;color:var(--a2)}
.xp-pill b{font-size:12px;color:var(--a2)}
.xp-pill span{font-size:11px;color:var(--text-3);font-variant-numeric:tabular-nums}
.avatar-btn{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-size:12.5px;font-weight:750;color:#06121f;background:linear-gradient(140deg,var(--a1),var(--a2));border:1px solid transparent}
.avatar-btn:hover{filter:brightness(1.08)}

.view{padding:26px 30px 70px;flex:1;outline:none;max-width:1440px;width:100%;margin:0 auto}
.view > *{max-width:100%}

/* ========== 提示 / 弹窗 ========== */
.toast-wrap{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:9px;align-items:center;pointer-events:none}

/* 回到顶部悬浮按钮 */
.to-top{position:fixed;right:26px;bottom:96px;z-index:190;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;cursor:pointer;color:var(--text);background:var(--panel-2);border:1px solid var(--line);box-shadow:0 8px 24px rgba(0,0,0,.28);transition:opacity .22s,transform .22s,background .22s}
.to-top:hover{background:var(--panel-3,var(--panel-2));transform:translateY(-3px);color:var(--a1)}
.to-top[hidden]{display:none}
@media (max-width:640px){.to-top{right:16px;bottom:88px;width:42px;height:42px}}
.toast{
  display:flex;align-items:center;gap:10px;padding:11px 18px;border-radius:12px;
  background:var(--bg-3);border:1px solid var(--line-strong);box-shadow:var(--shadow);
  font-size:13px;font-weight:600;animation:toastIn .24s var(--ease);
  max-width:min(92vw,460px);
}
html[data-theme="dark"] .toast{background:#141f33}
.toast svg{width:17px;height:17px;color:var(--a1)}
.toast.warn svg{color:var(--warm)}
.toast.bad svg{color:var(--bad)}
.toast.out{animation:toastOut .2s ease forwards}
@keyframes toastIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateY(8px)}}

.modal-wrap{position:fixed;inset:0;z-index:150;display:grid;place-items:center;padding:24px;background:rgba(4,8,15,.66);backdrop-filter:blur(6px)}
.modal{width:100%;max-width:520px;background:var(--bg-2);border:1px solid var(--line-strong);border-radius:20px;box-shadow:var(--shadow);padding:26px;animation:modalIn .2s var(--ease);max-height:88vh;overflow:auto}
html[data-theme="dark"] .modal{background:#101a2c}
@keyframes modalIn{from{opacity:0;transform:scale(.97) translateY(8px)}to{opacity:1;transform:none}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:18px}
.modal-head h3{font-size:18px;font-weight:720}
.modal-head p{font-size:12.5px;color:var(--text-3);margin-top:4px}
.modal-close{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;color:var(--text-3)}
.modal-close:hover{background:var(--panel-2);color:var(--text)}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}

/* ========== 表单（通用） ========== */
.input,select.input,textarea.input{
  width:100%;height:42px;padding:0 12px;border-radius:10px;
  background:var(--panel);border:1px solid var(--line);outline:none;font-size:13.5px;
}
textarea.input{height:auto;padding:11px 12px;line-height:1.7;resize:vertical;min-height:90px}
.input:focus{border-color:rgba(94,234,212,.5);box-shadow:0 0 0 3px rgba(94,234,212,.08)}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238b9bb5' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m5 9 7 7 7-7'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 11px center;padding-right:32px}
select.input option{background:var(--bg-2);color:var(--text)}
html[data-theme="light"] select.input option{background:#fff;color:#10203a}
.form-row{display:grid;gap:14px;grid-template-columns:1fr 1fr}
.form-field{display:grid;gap:6px}
.form-field > label{font-size:12px;font-weight:650;color:var(--text-2)}

/* ========== 响应式 ========== */
@media (max-width:1120px){
  .auth-visual{padding:44px}
  .auth-footnote{left:44px}
  .topbar-search input{width:170px}
  .topbar-search input:focus{width:210px}
}
@media (max-width:980px){
  .auth-screen{grid-template-columns:1fr}
  .auth-visual{display:none}
  .auth-panel{min-height:100vh;padding:40px 22px}
  .sidebar{
    position:fixed;left:0;top:0;transform:translateX(-100%);
    transition:transform .22s var(--ease);box-shadow:var(--shadow);
  }
  .sidebar.open{transform:none}
  .sidebar-close{display:grid}
  .sidebar-scrim.show{display:block;position:fixed;inset:0;background:rgba(3,7,14,.55);z-index:39;backdrop-filter:blur(3px)}
  .menu-btn{display:grid}
  .topbar{padding:0 18px}
  .view{padding:22px 18px 60px}
  .topbar-search{display:none}
}
@media (max-width:680px){
  .page-eyebrow{display:none}
  .page-title{font-size:16.5px}
  .topbar{height:64px}
  .xp-pill span{display:none}
  .view{padding:18px 14px 60px}
  .card{padding:17px;border-radius:15px}
  .auth-form h2{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
}