:root{--navy:#082e6d;--red:#ef3b31;--text:#14213d;--muted:#6b7890;--border:#d8e0ec;--bg:#f5f7fb}*{box-sizing:border-box}html,body{min-height:100%;margin:0;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:var(--text);background:var(--bg)}button,input{font:inherit}button{cursor:pointer}input{width:100%;height:46px;padding:0 13px;border:1px solid #ccd6e4;border-radius:6px;background:#fff;color:#172640;font-size:16px}input:focus{outline:2px solid #aacff6;border-color:#2c75ba}.primary-button{height:48px;border:0;border-radius:6px;background:#0b3d7f;color:#fff;font-weight:800}.primary-button:hover{background:#092f63}.login-page{min-height:100vh;display:grid;grid-template-columns:minmax(480px,1.15fr) minmax(430px,.85fr);background:#fff}.login-brand{position:relative;min-height:100vh;overflow:hidden;color:#fff;background:linear-gradient(145deg,#041c46 0%,#0a397c 55%,#0f4c91 100%)}.login-brand::before{content:"";position:absolute;width:560px;height:560px;border:1px solid #ffffff1f;border-radius:50%;left:-240px;top:-190px}.login-brand::after{content:"择";position:absolute;right:-30px;bottom:-155px;color:#ffffff0a;font:900 520px/1 serif}.login-brand__wash{position:absolute;inset:0;background:linear-gradient(115deg,transparent 0 63%,#ffffff0a 63% 64%,transparent 64%)}.login-brand__content{position:relative;z-index:1;min-height:100vh;max-width:740px;margin:0 auto;padding:clamp(40px,7vh,78px) clamp(42px,6vw,88px);display:flex;flex-direction:column}.login-brand__logo{width:174px;height:86px;object-fit:cover;border-radius:10px;padding:4px 8px;background:#fff;box-shadow:0 16px 40px #0003}.login-brand__copy{margin:auto 0;padding:52px 0;max-width:610px}.login-brand__eyebrow{display:inline-block;padding-left:13px;border-left:3px solid #f04435;font-size:15px;font-weight:700;letter-spacing:.08em;color:#bed6f5}.login-brand__copy h1{margin:26px 0 24px;font-size:clamp(38px,4.5vw,63px);line-height:1.22;letter-spacing:-.035em;font-weight:900}.login-brand__copy p{max-width:560px;margin:0;font-size:17px;line-height:1.9;color:#d7e5f7}.teacher-card{width:max-content;display:flex;align-items:center;gap:14px;padding:10px 22px 10px 10px;border:1px solid #ffffff2e;border-radius:48px;background:#ffffff14}.teacher-card img{width:58px;height:58px;object-fit:cover;object-position:50% 24%;border-radius:50%;border:2px solid #ffffffc7}.teacher-card div{display:flex;flex-direction:column;gap:5px}.teacher-card span{font-size:13px;color:#bfd2ec}.login-panel{position:relative;min-height:100vh;display:grid;place-items:center;padding:44px;background:radial-gradient(circle at 90% 10%,#eef4fc,transparent 36%),#fff}.login-card{width:min(420px,100%)}.login-card__mark{width:52px;height:52px;margin-bottom:26px;display:grid;place-items:center;border-radius:12px;background:var(--navy);color:#fff;box-shadow:inset 0 -5px 0 #f13b30}.login-card__mark span{font-size:27px;font-weight:900}.login-card__kicker,.admin-kicker{margin:0 0 7px;color:#d93025;font-size:13px;font-weight:800;letter-spacing:.12em}.login-card h2{margin:0;font-size:29px;line-height:1.35;color:#10274c}.login-card__hint{margin:11px 0 30px;color:#728096;font-size:15px}.login-form{display:grid;gap:20px}.login-field{display:grid;gap:9px}.login-field label,.admin-create label{color:#293a56;font-weight:700}.login-error{margin:-6px 0 0;padding:10px 12px;border-left:3px solid #d7352a;background:#fff2f0;color:#a52820;font-size:14px;line-height:1.55}.login-card__notice{display:flex;gap:10px;margin-top:26px;padding:14px;border:1px solid #dce4ef;border-radius:7px;background:#f7f9fc;color:#65738a}.login-card__notice>span{flex:0 0 auto;width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:#e2ebf7;color:#174c89;font:800 13px/1 serif}.login-card__notice p{margin:0;font-size:13px;line-height:1.65}.admin-entry,.back-link{display:block;width:max-content;margin:24px auto 0;color:#728096;font-size:13px;text-underline-offset:4px}.login-copyright{position:absolute;bottom:18px;margin:0;color:#9aa5b5;font-size:12px}.admin-login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(145deg,#071e47,#0b407f)}.admin-login-card{width:min(440px,100%);padding:40px;border-radius:12px;background:#fff;box-shadow:0 24px 80px #0005}.admin-login-card>img{width:144px;height:84px;object-fit:cover;display:block;margin:0 auto 28px}.admin-login-card h1{margin:0;color:#10274c}.admin-login-card>p:not(.admin-kicker){margin:10px 0 26px;color:#6d7b90;line-height:1.7}.admin-page{min-height:100vh;background:#f2f5fa}.admin-header{min-height:78px;display:flex;justify-content:space-between;align-items:center;padding:10px clamp(22px,4vw,64px);background:var(--navy);color:#fff;border-bottom:4px solid var(--red);box-shadow:0 4px 18px #03183d29}.admin-brand,.admin-owner{display:flex;align-items:center;gap:13px}.admin-brand img{width:78px;height:49px;border-radius:6px;object-fit:cover}.admin-brand div{display:flex;flex-direction:column;gap:2px}.admin-brand strong{font-size:18px}.admin-brand span,.admin-owner{font-size:13px;color:#cbdcf2}.link-button{padding-left:13px;border:0;border-left:1px solid #ffffff47;background:transparent;color:#fff}.admin-layout{width:min(1500px,calc(100% - 44px));margin:34px auto;display:grid;grid-template-columns:minmax(300px,380px) minmax(620px,1fr);gap:24px;align-items:start}.admin-create,.admin-list{border:1px solid #dce3ed;background:#fff;box-shadow:0 10px 34px #0f274e0f}.admin-create{padding:28px;position:sticky;top:26px}.admin-create h1,.admin-list h2{margin:0;color:#10274c}.admin-create h1{font-size:25px}.admin-create>p:not(.admin-kicker){margin:10px 0 24px;color:#6a788d;font-size:14px;line-height:1.7}.admin-create form{display:grid;gap:18px}.admin-create form>div{display:grid;gap:8px}.admin-create input{height:42px}.admin-create form>button{height:44px;margin-top:4px}.credential-box{display:grid;gap:8px;margin-top:22px;padding:18px;border:1px solid #f1c6c1;background:#fff8f7}.credential-box>span{color:#b12f28;font-size:13px;font-weight:800}.credential-box strong{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:#172b4b;overflow-wrap:anywhere}.credential-box button,.admin-list button,.account-table button{height:34px;padding:0 12px;border:1px solid #ccd6e4;border-radius:5px;background:#fff;color:#15375f}.credential-box small{color:#7e6a68;line-height:1.6}.admin-list{padding:26px;min-width:0}.admin-list__head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.admin-list h2{font-size:23px}.account-table{overflow:auto;border:1px solid #dce3ed;border-radius:7px}.account-table table{width:100%;border-collapse:collapse;min-width:740px}.account-table thead{background:#eef4fb}.account-table th,.account-table td{padding:13px 12px;text-align:left;border-bottom:1px solid #e0e6ef;color:#465872;font-size:14px}.account-table th{color:#354968;font-size:13px}.account-table td:first-child strong,.account-table td:first-child span{display:block}.account-table td:first-child strong{color:#142b50}.account-table td:first-child span{margin-top:4px;color:#78869b;font-size:13px}.account-table td:last-child{text-align:right;white-space:nowrap}.account-table td:last-child button+button{margin-left:7px}.account-table button.danger{border-color:#e4b4b0;color:#ad2e27}.status-pill{display:inline-block;min-width:58px;padding:4px 9px;border-radius:99px;text-align:center;font-size:12px;font-weight:800}.status-pill.active{background:#e9f7ef;color:#187241}.status-pill.disabled{background:#f1f2f4;color:#697386}.empty-account{height:180px;text-align:center!important;color:#8490a2!important}.admin-footnote{margin:18px 0 0;color:#7b8799;font-size:13px;line-height:1.7}.toast{position:fixed;z-index:1000;left:50%;top:24px;transform:translateX(-50%);max-width:calc(100% - 32px);padding:13px 18px;border-radius:7px;background:#173e70;color:#fff;box-shadow:0 10px 30px #0003}.toast.error{background:#b62e27}.simulator-page{min-height:100vh;background:#fff}.brand-strip{position:relative;z-index:5;min-height:68px;padding:7px max(18px,calc((100vw - 1260px)/2 + 24px));display:flex;align-items:center;justify-content:space-between;gap:20px;background:#082e6d;color:#fff;border-bottom:4px solid #ef3b31;box-shadow:0 3px 14px #0b2a5b22}.brand-strip__identity,.brand-strip__account{display:flex;align-items:center}.brand-strip__identity{gap:13px}.brand-strip__identity img{width:78px;height:47px;object-fit:cover;border-radius:4px;background:#fff}.brand-strip__identity div{display:flex;flex-direction:column;gap:2px}.brand-strip__identity strong{font-size:18px;letter-spacing:.08em}.brand-strip__identity span{font-size:12px;color:#c8dbf3}.brand-strip__account{gap:14px;font-size:13px;color:#d8e7f8}.brand-strip__account b{color:#fff}.brand-strip__account button{height:30px;padding:0 12px;color:#fff;border:1px solid #ffffff55;border-radius:3px;background:#ffffff12}.account-watermark{position:fixed;inset:70px 0 0;z-index:2147483000;display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:150px;overflow:hidden;pointer-events:none;user-select:none;opacity:.035;transform:rotate(-16deg) scale(1.2);transform-origin:center;color:#082e6d;font-weight:800;font-size:16px;letter-spacing:.08em}.account-watermark span{display:flex;align-items:center;justify-content:center;white-space:nowrap}.print-brand{display:flex;justify-content:space-between;gap:15px;margin:8px 0;padding:7px 10px;border:1px solid #a8bcd7;background:#f0f5fb;color:#173b6e;font-size:12px}.print-fingerprint{font:10px ui-monospace,SFMono-Regular,Consolas,monospace;color:#778397;overflow-wrap:anywhere}
@media(max-width:920px){.login-page{grid-template-columns:1fr}.login-brand{min-height:auto}.login-brand__content{min-height:auto;padding:26px 24px 30px}.login-brand__logo{width:125px;height:66px}.login-brand__copy{margin:38px 0 32px;padding:0}.login-brand__copy h1{margin:18px 0 14px;font-size:34px}.login-brand__copy p{font-size:15px}.teacher-card{display:none}.login-panel{min-height:600px;padding:42px 24px 68px}.admin-layout{grid-template-columns:1fr}.admin-create{position:static}}@media(max-width:700px){.brand-strip{align-items:flex-start;padding:8px 12px}.brand-strip__identity img{width:66px;height:42px}.brand-strip__identity strong{font-size:16px}.brand-strip__identity span{display:none}.brand-strip__account{flex-direction:column;align-items:flex-end;gap:5px;font-size:12px}.brand-strip__account>span{max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-watermark{grid-template-columns:repeat(2,1fr);font-size:14px}}@media(max-width:600px){.login-brand__copy h1{font-size:30px}.login-panel{place-items:start center}.admin-header{min-height:72px;padding:11px 16px;gap:12px}.admin-brand img{width:64px;height:42px}.admin-brand span,.admin-owner>span{display:none}.admin-layout{width:calc(100% - 20px);margin:14px auto}.admin-create,.admin-list,.admin-login-card{padding:18px}}@media print{.brand-strip,.account-watermark{display:none!important}.print-brand{display:flex!important}}