:root{--blue:#2448f5;--ink:#161a25;--muted:#636875;--line:#e4e6ec;--paper:#fff;--soft:#f5f6fa;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit}a:focus-visible{outline:3px solid var(--blue);outline-offset:6px}::selection{background:#dce3ff}.masthead{max-width:1360px;margin:auto;padding:30px 56px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:17px;letter-spacing:-.5px;flex-wrap:wrap}.brand-mark{background:var(--blue);color:white;width:36px;height:36px;display:grid;place-items:center;font-weight:800;font-size:24px;border-radius:9px}.brand-weight{font-weight:750}.brand-domain{color:var(--muted)}.header-note{color:var(--muted);font-size:14px}main{max-width:1248px;padding:0 56px;margin:auto}.edition{display:flex;justify-content:space-between;align-items:center;margin:38px 0 30px;gap:20px}.edition-label,.closing-label,.task-label{font-size:12px;font-weight:700;letter-spacing:1.6px}.edition-label{color:var(--blue)}time{font-size:14px;color:var(--muted)}.daily{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);column-gap:70px}.story{padding:24px 0 32px}.tip-meta{display:flex;gap:14px;align-items:center;font-size:14px;color:var(--muted)}.meta-line{width:20px;height:1px;background:#9a9eaa}h1{font-size:clamp(3rem,5.6vw,5.1rem);line-height:1.02;font-weight:750;letter-spacing:-3px;margin:28px 0}p{line-height:1.65}.lead{font-size:18px;color:var(--muted);max-width:550px;margin:0}.principle{font-size:16px;margin:28px 0 0}.number-panel{background:var(--blue);color:white;min-height:385px;border-radius:3px;display:flex;flex-direction:column;justify-content:space-between;padding:28px 30px;overflow:hidden}.panel-top,.panel-bottom{font-size:12px;letter-spacing:1.7px;line-height:1.6}.number{font-size:clamp(7rem,13vw,12.5rem);font-weight:750;letter-spacing:-.08em;line-height:1.1;padding-right:.08em}.panel-bottom{display:flex;flex-direction:column}.challenge{grid-column:1/-1;background:var(--soft);border:1px solid var(--line);border-radius:3px;padding:28px 32px;margin-top:32px}.challenge-heading{display:flex;align-items:center;gap:12px}.task-icon{background:var(--blue);color:#fff;border-radius:50%;width:28px;height:28px;display:grid;place-items:center;font-size:17px;flex-shrink:0}h2{font-size:20px;margin:0;letter-spacing:-.3px}.task-duration{margin-left:auto;color:var(--muted);font-size:14px}.challenge>p{font-size:18px;margin:18px 0 22px;max-width:920px}.task-footer{display:flex;gap:22px;border-top:1px solid #dfe2ea;padding-top:18px;align-items:baseline;font-size:14px;line-height:1.6}.task-label{white-space:nowrap;color:var(--blue)}.closing{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:35px 0 38px}.closing-label{color:var(--muted)}.closing p{margin:8px 0 0;font-size:16px}.closing-thought{color:var(--muted);text-align:right;font-size:14px!important}footer{max-width:1360px;margin:auto;border-top:1px solid var(--line);padding:22px 56px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px;line-height:1.5}.notice{background:var(--soft);padding:16px;font-size:16px}.preview-note{font-size:12px}
@media(min-width:1600px){main{padding-top:14px}}@media(max-width:900px){.masthead{padding:24px 28px}main{padding:0 28px}.daily{column-gap:28px;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr)}h1{letter-spacing:-2px}.number-panel{padding:24px;min-height:350px}.number{font-size:8rem}footer{padding:22px 28px}}@media(max-width:640px){.masthead{padding:20px}.brand{font-size:15px;gap:9px}.brand-mark{width:32px;height:32px}.header-note{display:none}main{padding:0 20px}.edition{margin:26px 0 18px;align-items:flex-start;gap:12px;flex-direction:column}.edition-label{font-size:12px}.daily{grid-template-columns:minmax(0,1fr)}.story{padding:16px 0 25px}h1{font-size:3.25rem;letter-spacing:-2px;margin:24px 0}.lead{font-size:17px}.principle{margin-top:20px}.number-panel{min-height:initial;padding:18px 22px;flex-direction:row;align-items:center;gap:16px}.panel-top{max-width:130px;font-size:12px}.number{font-size:5rem;letter-spacing:-5px}.panel-bottom{display:none}.challenge{margin-top:24px;padding:22px 20px}.challenge-heading{flex-wrap:wrap;gap:10px}h2{font-size:18px}.task-duration{margin-left:38px;width:100%;font-size:14px}.challenge>p{font-size:17px}.task-footer{flex-direction:column;gap:8px}.closing{padding:28px 0;align-items:flex-start;flex-direction:column;gap:10px}.closing-thought{text-align:left!important}footer{padding:20px;flex-direction:column;gap:8px}}@media(prefers-reduced-motion:no-preference){.daily{animation:enter .6s ease both}@keyframes enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}}