:root{
  --bg:#f5f7fb;--panel:rgba(255,255,255,.92);--panel-solid:#fff;--text:#18212f;--muted:#788392;
  --line:#e8ebf0;--accent:#5d72e8;--accent-soft:#eef1ff;--green:#32a77a;--green-soft:#e9f8f2;
  --orange:#e59b45;--danger:#df5f68;--shadow:0 12px 40px rgba(28,39,63,.08);--radius:22px;
}
*{box-sizing:border-box}html{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}
body{margin:0;min-height:100vh;background:radial-gradient(circle at 8% 0%,#eef0ff 0,transparent 28%),radial-gradient(circle at 92% 8%,#eff9f5 0,transparent 24%),var(--bg)}
button,input{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}
#app{min-height:100vh}.splash{min-height:100vh;display:grid;place-content:center;text-align:center;gap:12px;color:var(--muted)}.splash .brand-mark{width:54px;height:54px;border-radius:18px;background:var(--text);color:#fff;display:grid;place-items:center;margin:auto;font-size:28px}.splash div:nth-child(2){font-weight:750;font-size:22px;color:var(--text)}
.shell{width:min(1120px,100%);margin:auto;padding:24px 22px 110px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:26px}.brand{display:flex;align-items:center;gap:12px}.logo{width:42px;height:42px;border-radius:15px;background:linear-gradient(145deg,#1f2939,#48546a);display:grid;place-items:center;color:#fff;font-weight:800;font-size:22px;box-shadow:var(--shadow)}.brand h1{font-size:19px;margin:0;letter-spacing:.2px}.brand p{font-size:12px;color:var(--muted);margin:3px 0 0}.desktop-nav{display:flex;gap:6px;background:rgba(255,255,255,.65);border:1px solid rgba(255,255,255,.9);padding:5px;border-radius:14px}.nav-btn{border:0;background:transparent;color:var(--muted);padding:9px 13px;border-radius:11px}.nav-btn.active{background:#fff;color:var(--text);box-shadow:0 4px 16px rgba(24,33,47,.07)}
.hero{display:grid;grid-template-columns:1.3fr .7fr;gap:18px;margin-bottom:18px}.card{background:var(--panel);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.9);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-main{padding:28px;background:linear-gradient(145deg,rgba(255,255,255,.94),rgba(247,248,255,.9))}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--accent);font-size:12px;font-weight:700;background:var(--accent-soft);padding:7px 10px;border-radius:999px}.hero h2{font-size:clamp(25px,3vw,37px);letter-spacing:-.8px;margin:17px 0 8px;line-height:1.16}.hero-desc{color:var(--muted);margin:0;line-height:1.7;max-width:620px}.hero-actions{display:flex;align-items:center;gap:10px;margin-top:23px;flex-wrap:wrap}.primary{border:0;background:var(--text);color:white;border-radius:13px;padding:12px 16px;font-weight:700;box-shadow:0 8px 22px rgba(24,33,47,.16)}.secondary{border:1px solid var(--line);background:#fff;color:var(--text);border-radius:13px;padding:11px 15px;font-weight:650}.hero-stat{padding:24px;display:flex;flex-direction:column;justify-content:space-between;min-height:200px}.stat-label{font-size:13px;color:var(--muted)}.stat-value{font-size:42px;font-weight:800;letter-spacing:-1.5px;margin:8px 0}.stat-sub{font-size:13px;color:var(--muted)}.trend-pill{display:inline-flex;align-items:center;gap:6px;width:max-content;margin-top:12px;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:700;padding:7px 9px;border-radius:999px}
.grid-main{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:18px}.chart-card{padding:22px;min-width:0}.card-title-row{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:18px}.card-title{margin:0;font-size:17px}.card-sub{font-size:12px;color:var(--muted);margin:5px 0 0}.legend{display:flex;gap:12px;align-items:center;font-size:12px;color:var(--muted);flex-wrap:wrap}.legend i{width:9px;height:9px;border-radius:999px;display:inline-block;margin-right:5px}.legend .actual{background:var(--accent)}.legend .target{background:var(--green)}.chips{display:flex;gap:8px;overflow:auto;padding-bottom:8px;scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.chip{border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:999px;padding:8px 12px;white-space:nowrap;font-size:12px}.chip.active{background:var(--text);border-color:var(--text);color:#fff}.chart-wrap{height:330px;position:relative;margin-top:8px}.chart-wrap svg{width:100%;height:100%;overflow:visible}.empty-chart{height:100%;display:grid;place-content:center;text-align:center;color:var(--muted);font-size:13px}.empty-icon{font-size:33px;margin-bottom:8px}.axis-label{font-size:11px;fill:#98a1ae}.point-label{font-size:10px;fill:#6e7887;font-weight:700}.tooltip-card{position:absolute;pointer-events:none;background:#18212f;color:#fff;padding:8px 10px;border-radius:10px;font-size:11px;box-shadow:0 8px 20px rgba(0,0,0,.16);transform:translate(-50%,-115%);white-space:nowrap;display:none;z-index:4}
.side-stack{display:grid;gap:18px;align-content:start}.quick-card,.recent-card{padding:20px}.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.mini-stat{padding:14px;border:1px solid var(--line);border-radius:16px;background:#fff}.mini-stat b{display:block;font-size:21px;margin-bottom:4px}.mini-stat span{font-size:11px;color:var(--muted)}.exam-item{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}.exam-item:last-child{border-bottom:0;padding-bottom:0}.exam-dot{width:36px;height:36px;border-radius:12px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);font-size:12px;font-weight:800;flex:0 0 auto}.exam-info{min-width:0;flex:1}.exam-info b{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.exam-info span{font-size:11px;color:var(--muted)}.exam-score{font-size:13px;font-weight:750}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin:8px 0 18px}.page-head h2{margin:0 0 5px;font-size:27px}.page-head p{margin:0;color:var(--muted);font-size:13px}.records-card{padding:8px 20px}.record{display:grid;grid-template-columns:120px minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}.record:last-child{border-bottom:0}.record-date{font-size:12px;color:var(--muted)}.record-date b{display:block;color:var(--text);font-size:16px;margin-top:4px}.record-scores{display:flex;gap:7px;flex-wrap:wrap}.score-tag{font-size:11px;background:#f6f7fa;border:1px solid #edf0f3;border-radius:9px;padding:6px 8px;color:#596474}.record-actions{display:flex;gap:7px}.icon-btn{width:36px;height:36px;border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--muted);display:grid;place-items:center}.icon-btn.danger:hover{color:var(--danger);border-color:#f4ccd0}
.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.account-card{padding:24px}.account-chip{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#f7f8fb;border:1px solid var(--line);padding:14px 15px;border-radius:14px;margin-top:14px}.account-chip code{font-size:15px;font-weight:700}.info-box{background:#f4f6ff;border:1px solid #e4e8ff;border-radius:16px;padding:15px;color:#55627a;font-size:13px;line-height:1.65}.info-box b{color:#2f3a4d}.danger-zone{margin-top:18px}.text-danger{color:var(--danger)}
.bottom-nav{display:none;position:fixed;left:14px;right:14px;bottom:calc(12px + env(safe-area-inset-bottom));height:64px;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.95);box-shadow:0 10px 35px rgba(27,37,58,.14);border-radius:20px;padding:6px;z-index:20}.bottom-nav button{flex:1;border:0;background:transparent;border-radius:14px;color:var(--muted);font-size:11px;display:grid;place-items:center;gap:2px}.bottom-nav button span:first-child{font-size:19px}.bottom-nav button.active{background:#f1f3f8;color:var(--text);font-weight:700}
.modal-backdrop{position:fixed;inset:0;background:rgba(22,28,39,.42);backdrop-filter:blur(7px);display:grid;place-items:center;padding:20px;z-index:100}.modal{width:min(680px,100%);max-height:min(88vh,850px);overflow:auto;background:#fff;border-radius:24px;box-shadow:0 30px 90px rgba(19,25,39,.25)}.modal-head{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:space-between;padding:20px 22px 14px;border-bottom:1px solid var(--line);z-index:2}.modal-head h3{margin:0;font-size:18px}.modal-body{padding:20px 22px 24px}.close-btn{border:0;background:#f3f4f7;width:34px;height:34px;border-radius:10px;font-size:18px}.form-grid{display:grid;grid-template-columns:1fr 180px;gap:12px}.field label{display:block;font-size:12px;font-weight:700;margin:0 0 7px;color:#4d5868}.field input{width:100%;border:1px solid #dfe3e9;background:#fff;border-radius:12px;padding:11px 12px;outline:none}.field input:focus{border-color:#98a6f2;box-shadow:0 0 0 3px #eef0ff}.score-table{margin-top:19px;border:1px solid var(--line);border-radius:17px;overflow:hidden}.score-row{display:grid;grid-template-columns:78px 1fr 1fr 78px;gap:8px;align-items:center;padding:10px 12px;border-bottom:1px solid var(--line)}.score-row:last-child{border-bottom:0}.score-row.header{background:#f7f8fb;font-size:11px;color:var(--muted);font-weight:700}.subject-name{font-weight:700;font-size:13px}.score-row input{width:100%;min-width:0;border:1px solid var(--line);border-radius:10px;padding:9px 8px;outline:none;background:#fff}.form-note{font-size:12px;color:var(--muted);line-height:1.6;margin:13px 0}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}
.onboard{width:min(520px,100%);text-align:center;padding:30px}.onboard .big-icon{width:62px;height:62px;border-radius:20px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin:0 auto 15px;font-size:30px}.onboard h2{margin:0;font-size:24px}.onboard p{color:var(--muted);line-height:1.7;font-size:13px}.credential{background:#f7f8fb;border:1px solid var(--line);border-radius:16px;padding:14px;text-align:left;margin:10px 0}.credential small{color:var(--muted);display:block;margin-bottom:5px}.credential-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.credential code{font-size:16px;font-weight:750;word-break:break-all}.copy-btn{border:0;background:#fff;border:1px solid var(--line);padding:7px 9px;border-radius:9px;font-size:11px;color:var(--muted);flex:0 0 auto}.save-warning{display:flex;text-align:left;gap:11px;background:#fff8e9;border:1px solid #f7e5b9;color:#735c2f;padding:13px;border-radius:14px;font-size:12px;line-height:1.6;margin-top:13px}.save-warning .i{width:22px;height:22px;flex:0 0 22px;border-radius:50%;background:#fff1ca;display:grid;place-items:center;font-family:Georgia,serif;font-weight:800}.full{width:100%;margin-top:14px}
.auth-page{min-height:100vh;display:grid;place-items:center;padding:22px}.auth-card{width:min(430px,100%);padding:27px}.auth-card .logo{margin-bottom:18px}.auth-card h2{margin:0 0 7px;font-size:26px}.auth-card>p{margin:0 0 22px;color:var(--muted);font-size:13px;line-height:1.65}.auth-card .field{margin-bottom:13px}.auth-actions{display:grid;gap:10px;margin-top:18px}.auth-help{text-align:center;color:var(--muted);font-size:11px;margin-top:17px}.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(20px);background:#18212f;color:#fff;padding:10px 14px;border-radius:11px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:200;box-shadow:0 8px 25px rgba(0,0,0,.2)}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:880px){.hero{grid-template-columns:1fr}.hero-stat{min-height:150px}.grid-main{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr 1fr}.account-grid{grid-template-columns:1fr}.desktop-nav{display:none}.bottom-nav{display:flex}.shell{padding-top:18px}.topbar{margin-bottom:18px}.topbar .secondary{display:none}}
@media(max-width:620px){.shell{padding:15px 14px 105px}.brand p{display:none}.logo{width:38px;height:38px;border-radius:13px}.hero-main{padding:22px}.hero h2{font-size:28px}.hero-stat{padding:20px}.stat-value{font-size:36px}.chart-card{padding:17px 14px}.card-title-row{display:block}.legend{margin-top:10px}.chart-wrap{height:285px}.side-stack{grid-template-columns:1fr}.page-head{align-items:flex-start}.page-head .primary{padding:10px 12px}.records-card{padding:5px 14px}.record{grid-template-columns:72px minmax(0,1fr) auto;gap:10px}.record-scores{gap:5px}.score-tag{padding:5px 6px}.record-actions{flex-direction:column}.icon-btn{width:32px;height:32px}.form-grid{grid-template-columns:1fr}.score-row{grid-template-columns:56px 1fr 1fr 58px;gap:5px;padding:9px 8px}.score-row input{font-size:13px;padding:9px 5px}.modal-backdrop{padding:8px;align-items:end}.modal{border-radius:22px 22px 14px 14px;max-height:92vh}.modal-head,.modal-body{padding-left:16px;padding-right:16px}.onboard{padding:24px 18px}.credential code{font-size:14px}.account-card{padding:19px}}