:root{--blue:#174ea6;--dark:#0c326f;--ink:#14263d;--muted:#5e7087;--line:#d9e4f0;--page:#f4f7fb;--green:#137a4f;--panel:#fff;--shadow:0 16px 42px rgba(24,67,111,.10)}
*{box-sizing:border-box}html{min-width:320px;background:var(--page)}body{margin:0;color:var(--ink);background:var(--page);font:16px/1.55 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}button,input{font:inherit}.hidden{display:none!important}.skip-link{position:fixed;top:-60px;left:12px}.skip-link:focus{top:12px}.topbar{min-height:68px;padding:10px clamp(18px,4vw,54px);display:flex;align-items:center;justify-content:space-between;color:#fff;background:linear-gradient(110deg,var(--dark),var(--blue))}.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:850}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:11px;color:var(--blue);background:#fff;font-size:23px}.account{display:flex;align-items:center;gap:12px;font-weight:750}main{width:min(1120px,calc(100% - 30px));margin:auto}.login-view{min-height:calc(100vh - 68px);display:grid;place-items:center}.login-card{width:min(470px,100%);display:grid;gap:10px;padding:clamp(24px,5vw,42px);border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}h1,h2,h3,p{margin-top:0}.login-card input{min-height:48px;padding:10px 13px;border:1px solid #aec0d4;border-radius:10px}.error{min-height:24px;color:#a52a2a;font-weight:700}.button{min-height:42px;padding:9px 16px;display:inline-grid;place-items:center;border:1px solid transparent;border-radius:10px;text-decoration:none;font-weight:800;cursor:pointer}.button.primary{color:#fff;background:var(--blue)}.button.secondary{color:var(--blue);background:#fff;border-color:#9eb7d5}.button.ghost{color:#fff;background:transparent;border-color:#ffffff88}.button.large{min-height:50px}.button:focus-visible,input:focus{outline:3px solid #7db3ff;outline-offset:2px}.eyebrow,.section-kicker{margin:0;color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.13em}.dashboard{padding:42px 0 70px}.heading,.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px}.heading h1{margin:2px 0 4px;font-size:clamp(32px,6vw,50px)}.heading p,.section-head p{color:var(--muted)}.summary-grid{margin:28px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.summary-grid article{padding:20px;border:1px solid var(--line);border-radius:16px;background:#fff}.summary-grid strong{display:block;font-size:30px}.summary-grid span{color:var(--muted)}.next-panel,.courses-panel{margin-top:20px;padding:clamp(20px,4vw,32px);border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}.next-card{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px;border-radius:15px;background:#eaf3ff}.next-card strong,.next-card span{display:block}.next-card span{color:var(--muted)}.exercise-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.exercise-card{display:grid;gap:15px;padding:20px;border:1px solid var(--line);border-radius:16px}.exercise-head{display:flex;justify-content:space-between;gap:12px}.exercise-head h3{margin-bottom:4px}.exercise-head p{margin:0;color:var(--muted);font-size:13px}.pill{height:max-content;padding:4px 9px;border-radius:99px;color:var(--green);background:#e8f7ef;font-size:12px;font-weight:850}.progress{height:10px;overflow:hidden;border-radius:99px;background:#e5edf6}.progress span{display:block;height:100%;background:linear-gradient(90deg,#357cdc,#12a56c)}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.metrics span{color:var(--muted);font-size:12px}.metrics strong{display:block;color:var(--ink);font-size:16px}.empty{grid-column:1/-1;padding:36px;text-align:center;color:var(--muted)}

.day-activities{display:grid;gap:8px;padding:12px;border-radius:12px;background:#f5f8fc}.day-activities>b{font-size:13px}.day-activities>div{display:flex;gap:7px;flex-wrap:wrap}.day-activities span{padding:5px 8px;border-radius:99px;color:var(--muted);background:#fff;border:1px solid var(--line);font-size:12px;font-weight:750}.day-activities span.done{color:var(--green);background:#e8f7ef;border-color:#b8ddc9}
.password-dialog{width:min(480px,calc(100% - 24px));padding:0;border:0;border-radius:20px;box-shadow:0 24px 80px rgba(13,41,77,.28)}.password-dialog::backdrop{background:rgba(9,28,54,.48)}.password-dialog form{display:grid;gap:10px;padding:26px}.password-dialog input{min-height:48px;padding:10px 13px;border:1px solid #aec0d4;border-radius:10px}.dialog-head{display:flex;align-items:start;justify-content:space-between;gap:20px}.dialog-head h2{margin:2px 0 0}.dialog-close{width:40px;height:40px;border:0;border-radius:10px;color:var(--muted);background:#edf3f9;font-size:25px;cursor:pointer}.dialog-help{color:var(--muted)}.dialog-actions{margin-top:4px;display:flex;justify-content:flex-end;gap:10px}
@media(max-width:760px){.summary-grid{grid-template-columns:repeat(2,1fr)}.exercise-grid{grid-template-columns:1fr}.heading,.section-head{align-items:stretch;flex-direction:column}.next-card{align-items:stretch;flex-direction:column}}
@media(max-width:440px){main{width:calc(100% - 20px)}.account{align-items:end;flex-direction:column;font-size:13px}.summary-grid{gap:8px}.summary-grid article{padding:14px}.metrics{grid-template-columns:1fr 1fr}.metrics span:last-child{grid-column:1/-1}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}