.auth{display:flex;align-items:center;justify-content:center;padding:clamp(16px,3vw,40px)}.auth-grid{width:100%;max-width:1200px;min-height:min(780px,calc(100dvh - (2*clamp(16px,3vw,40px))));display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);border-radius:32px;overflow:hidden;background:var(--card);box-shadow:0 50px 110px -40px #080a2899,0 0 0 1px #fff9}.auth-stage{position:relative;isolation:isolate;display:flex;flex-direction:column;gap:28px;padding:36px 48px 32px;color:#fff;background:radial-gradient(110% 70% at 0% 0%,rgba(255,255,255,.2),transparent 55%),radial-gradient(80% 60% at 100% 100%,rgba(255,255,255,.12),transparent 60%),linear-gradient(155deg,var(--c-4353e8) 0%,var(--c-3538b8) 100%)}.auth-stage:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background-color:#ffffff29;-webkit-mask-image:var(--deco-tr),var(--deco-br);mask-image:var(--deco-tr),var(--deco-br);-webkit-mask-size:232px 232px;mask-size:232px 232px;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:right top,right bottom;mask-position:right top,right bottom}.auth-brand{align-self:flex-start;display:inline-flex;align-items:center;gap:10px;padding:9px 18px 9px 12px;border-radius:18px;background:#fff;box-shadow:0 10px 30px -14px #080a288c;color:var(--ink);text-decoration:none}.auth-brand img{display:block;height:40px;width:auto;max-width:200px}.auth-brand span{font-size:16px;font-weight:700}.auth-pitch{margin-top:auto;display:flex;flex-direction:column;gap:16px;max-width:32rem}.auth-eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#ffffffc7}.auth-headline{font-size:clamp(32px,3.4vw,50px);font-weight:800;line-height:1.08;letter-spacing:-.02em;text-wrap:balance}.auth-lede{font-size:17px;font-weight:500;line-height:1.5;color:#ffffffe0}.auth-points{list-style:none;display:flex;flex-direction:column;gap:12px;margin-top:6px}.auth-points li{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:600;line-height:1.4}.auth-point-dot{flex:none;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#fff;color:var(--teal);box-shadow:0 2px 8px #080a2833}.auth-cast{margin-bottom:auto;display:flex;flex-direction:column;align-items:flex-start;gap:6px}.auth-bubble{position:relative;margin-left:64px;padding:11px 16px;border-radius:18px 18px 18px 6px;background:#fff;color:var(--ink);font-size:15px;font-weight:700;box-shadow:0 12px 30px -14px #080a288c}.auth-bubble:after{content:"";position:absolute;left:14px;bottom:-9px;border:10px solid transparent;border-top-color:#fff;border-bottom:0;border-left-width:4px}.auth-cast-row{display:flex;align-items:flex-end;gap:0}.auth-cast-row .mascot-student{width:112px;height:112px;margin-left:-22px}.auth-panel{display:flex;align-items:center;justify-content:center;padding:40px clamp(28px,4vw,56px);background:var(--card)}.auth-card{width:100%;max-width:440px;color:var(--ink)}.auth-tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:4px;padding:4px;border-radius:16px;background:var(--c-f2f5fc)}.auth-tabs.has-3{grid-template-columns:repeat(3,1fr)}.auth-tabs button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:0 6px;border:0;border-radius:12px;background:transparent;color:var(--ink-soft);font:600 14px var(--font-ui);white-space:nowrap;cursor:pointer;transition:background .15s ease,color .15s ease,box-shadow .15s ease}.auth-tabs button:hover{color:var(--ink)}.auth-tabs button[aria-selected=true]{background:var(--card);color:var(--teal);box-shadow:0 1px 2px #0f172a14,0 4px 12px var(--c-2563eb-a06, rgba(37, 99, 235, .06))}.auth-title{margin:22px 0 18px;font-size:24px;font-weight:700;line-height:1.25;color:var(--ink)}.auth-error{margin-bottom:16px}.auth-google{position:relative;padding:24px 20px 16px;border-radius:22px;border:2px solid var(--c-c7d2fe);background:linear-gradient(180deg,var(--c-eef1ff) 0%,#fff 100%);text-align:center}.auth-google-badge{position:absolute;top:-12px;left:50%;transform:translate(-50%);padding:4px 12px;border-radius:999px;background:var(--teal);color:#fff;font-size:12px;font-weight:700;white-space:nowrap;box-shadow:0 4px 10px -4px var(--c-4353e8)}.auth-gbtn{position:relative;display:flex;justify-content:center;min-height:44px}.auth-gbtn-slot{width:100%;max-width:400px;display:flex;justify-content:center;color-scheme:light}.auth-gbtn-skeleton{position:absolute;inset:2px 0 auto;margin:0 auto;width:100%;max-width:400px;height:40px;border-radius:999px;background:linear-gradient(90deg,var(--c-e0e7ff) 0%,var(--c-eef1ff) 50%,var(--c-e0e7ff) 100%);background-size:200% 100%;animation:authShimmer 1.2s linear infinite}@keyframes authShimmer{to{background-position:-200% 0}}.auth-gbtn-failed{font-size:13px;line-height:1.5;color:var(--wrong)}.auth-google-note{margin-top:12px;font-size:13px;line-height:1.5;color:var(--ink-soft)}.auth-inapp{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.5;color:var(--ink-soft)}.auth-inapp b{color:var(--ink)}.auth-inapp-copy{align-self:center;min-height:40px;padding:0 16px;border:2px solid var(--teal);border-radius:999px;background:#fff;color:var(--teal);font:600 14px var(--font-ui);cursor:pointer}.auth-or{display:flex;align-items:center;gap:12px;margin:18px 0 14px;color:var(--c-94a3b8);font-size:13px;font-weight:600}.auth-or:before,.auth-or:after{content:"";flex:1;height:1px;background:var(--line)}.auth-alt{border:1.5px solid var(--line);border-radius:16px;background:#fff;overflow:hidden;transition:border-color .15s ease,box-shadow .15s ease}.auth-alt.is-open{border-color:var(--c-c7d2fe);box-shadow:0 8px 24px -16px var(--c-4353e8)}.auth-alt-toggle{width:100%;display:flex;align-items:center;gap:10px;min-height:50px;padding:0 16px;border:0;background:transparent;color:var(--ink);font:600 15px var(--font-ui);text-align:left;cursor:pointer}.auth-alt-toggle:hover{background:var(--c-f2f5fc)}.auth-alt-toggle>svg:first-child{flex:none;color:var(--ink-soft)}.auth-alt-chevron{margin-left:auto;color:var(--ink-soft);transition:transform .2s ease}.auth-alt.is-open .auth-alt-chevron{transform:rotate(180deg)}.auth-alt-body{padding:4px 16px 16px}.auth-alt-body[hidden]{display:none}.auth-qr{margin-top:10px;border:1.5px solid var(--line);border-radius:16px}.auth-qr:disabled{opacity:.6;cursor:default}.auth-form{display:flex;flex-direction:column;gap:12px}.auth .login-input{padding:12px 15px;border-radius:14px;border-width:1.5px;font-size:16px;font-weight:600;box-shadow:none}.auth .login-input:focus{transform:none}.auth-note{resize:vertical;min-height:64px;font-family:inherit}.auth-field{display:flex;flex-direction:column;gap:6px;min-width:0}.auth-field>span{font-size:13px;font-weight:600;color:var(--ink-soft)}.auth-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.auth-submit{display:inline-flex;align-items:center;justify-content:center;width:100%;min-height:50px;margin-top:4px;padding:0 20px;border:1.5px solid var(--c-c7d2fe);border-radius:14px;background:#fff;color:var(--teal);font:700 16px var(--font-ui);text-decoration:none;cursor:pointer}.auth-submit.is-primary{border-color:transparent;background:var(--teal);color:#fff;box-shadow:0 3px 0 var(--teal-dark)}.auth-submit.is-primary:active{transform:translateY(2px);box-shadow:0 1px 0 var(--teal-dark)}.auth-submit:disabled{opacity:.65;cursor:default}.auth-foot{margin-top:18px;text-align:center;font-size:14px;line-height:1.5;color:var(--ink-soft)}.auth-foot a,.auth .login-hint a{color:var(--teal);font-weight:600}.auth .login-hint{margin:0}.auth-saved-title{margin-bottom:12px;font-size:15px;font-weight:700;color:var(--ink)}.auth-saved-list{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:10px}.auth-saved-item{position:relative}.auth-saved-btn{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;gap:3px;padding:16px 8px 12px;border:1.5px solid var(--line);border-radius:18px;background:#fff;color:var(--ink);font-family:var(--font-ui);text-align:center;cursor:pointer;transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease}.auth-saved-btn:hover:not(:disabled){border-color:var(--c-c7d2fe);box-shadow:0 12px 26px -18px var(--c-4353e8);transform:translateY(-1px)}.auth-saved-btn:disabled{cursor:default}.auth-saved-item.is-busy .auth-saved-btn{border-color:var(--teal)}.auth-saved-btn:focus-visible{outline:3px solid var(--teal);outline-offset:2px}.auth-saved-avatar{display:grid;place-items:center;width:56px;height:56px;margin-bottom:6px;border-radius:50%;-o-object-fit:cover;object-fit:cover;color:#fff;font-size:24px;font-weight:700;box-shadow:0 0 0 3px #fff,0 0 0 5px var(--c-e0e7ff)}.auth-saved-name{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;font-weight:700;line-height:1.3;word-break:break-word}.auth-saved-role{font-size:12px;font-weight:600;color:var(--teal)}.auth-saved-hint{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11.5px;color:var(--ink-soft)}.auth-saved-forget{position:absolute;top:6px;right:6px}.auth-saved-forget button{display:grid;place-items:center;width:28px;height:28px;border:0;border-radius:50%;background:var(--c-f2f5fc);color:var(--ink-soft);cursor:pointer}.auth-saved-forget button:hover{background:var(--wrong-bg);color:var(--wrong)}.auth-saved-forget button:focus-visible{outline:3px solid var(--teal);outline-offset:1px}.auth-remember{display:flex;align-items:flex-start;gap:10px;margin-top:16px;padding:12px 14px;border-radius:14px;background:var(--c-f2f5fc);cursor:pointer}.auth-remember input{flex:none;width:20px;height:20px;margin-top:1px;accent-color:var(--teal);cursor:pointer}.auth-remember b{display:block;font-size:14px;font-weight:600;color:var(--ink)}.auth-remember small{display:block;margin-top:2px;font-size:12.5px;line-height:1.45;color:var(--ink-soft)}.auth-identity{display:flex;align-items:center;gap:12px;padding:10px 10px 10px 12px;border-radius:16px;background:var(--c-f2f5fc)}.auth-identity-avatar{flex:none;display:grid;place-items:center;width:40px;height:40px;border-radius:50%;-o-object-fit:cover;object-fit:cover;background:var(--c-e0e7ff);color:var(--teal)}.auth-identity-text{flex:1;min-width:0;display:flex;flex-direction:column}.auth-identity-text b,.auth-identity-text span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-identity-text b{font-size:15px;font-weight:700}.auth-identity-text span{font-size:13px;color:var(--ink-soft)}.auth-identity-badge{flex:none;display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:999px;background:#e7f5ed;color:#16774a;font-size:12px;font-weight:700}.auth-identity-switch button{min-height:36px;padding:0 10px;border:0;border-radius:10px;background:transparent;color:var(--teal);font:600 14px var(--font-ui);cursor:pointer}.auth-identity-switch button:hover{background:#fff}.auth-callout{margin-bottom:16px;padding:12px 14px;border-left:4px solid var(--teal);border-radius:12px;background:var(--c-eef1ff);font-size:14px;line-height:1.55}.auth-callout.is-warn{border-left-color:#f59e0b;background:#fff7e6;color:#7c4a03}.auth-status{display:flex;flex-direction:column;align-items:center;gap:8px;padding:26px 6px 18px;text-align:center}.auth-status>svg{color:var(--teal)}.auth-status>svg.is-ok,.auth-status.is-ok>svg{color:#16a34a}.auth-status h2{font-size:22px;font-weight:700;line-height:1.3}.auth-status p{font-size:14.5px;line-height:1.6;color:var(--ink-soft)}.auth-status p b{color:var(--ink)}.auth-tabs button:focus-visible,.auth-alt-toggle:focus-visible,.auth-submit:focus-visible,.auth-brand:focus-visible,.auth-identity-switch button:focus-visible,.auth-inapp-copy:focus-visible{outline:3px solid var(--teal);outline-offset:2px}@media (max-width: 959px){.auth-grid{grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr;max-width:560px;min-height:0;border-radius:28px}.auth-stage{gap:14px;padding:20px 22px 22px}.auth-stage:after{-webkit-mask-image:var(--deco-tr);mask-image:var(--deco-tr);-webkit-mask-size:138px 138px;mask-size:138px 138px;-webkit-mask-position:right top;mask-position:right top}.auth-brand{padding:7px 14px 7px 10px;border-radius:14px}.auth-brand img{height:32px}.auth-pitch{gap:6px}.auth-headline{font-size:25px}.auth-lede,.auth-points,.auth-cast{display:none}.auth-panel{align-items:flex-start;padding:22px 20px 26px}.auth-title{margin:18px 0 16px;font-size:21px}}@media (max-width: 559px){.auth{padding:0;align-items:stretch}.auth-grid{min-height:100vh;min-height:100dvh;border-radius:0;box-shadow:none}}@media (max-width: 420px){.auth-google{padding:22px 14px 14px}.auth-row{grid-template-columns:1fr}.auth-identity-badge span{display:none}.auth-tabs.has-3 button svg{display:none}}@media (max-width: 359px){.auth-tabs button svg{display:none}}@media (prefers-reduced-motion: reduce){.auth-gbtn-skeleton{animation:none}.auth-alt-chevron,.auth-tabs button{transition:none}}