@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@500;600;700&display=swap');
:root{color-scheme:light;--paper:#f9f8f5;--ink:#302f2c;--muted:#706e68;--line:#e4e1da;--accent:#65806b;--surface:#f1efe9;--hover:#efede7;--button-hover:#4d4b45;font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}a{color:inherit;text-decoration:none}.masthead{max-width:1200px;margin:auto;padding:32px 44px;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600}.brand svg{width:23px;height:23px}.brand span{font-size:12px;color:var(--muted);font-weight:400;border-left:1px solid var(--line);padding-left:12px;margin-left:3px}.edition{color:var(--muted);font-size:12px}main{width:min(680px,calc(100% - 48px));margin:72px auto 90px}.eyebrow{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:12px;letter-spacing:.08em}.dot{width:6px;height:6px;background:var(--accent);border-radius:50%}h1{font-family:'Noto Serif SC','Songti SC',SimSun,serif;font-size:clamp(36px,5.5vw,54px);line-height:1.5;font-weight:600;letter-spacing:-.035em;margin:20px 0 20px}.intro{font-size:15px;line-height:2;color:var(--muted);margin:0 0 48px}.connection{border-top:1px solid var(--ink);border-bottom:1px solid var(--line);padding:20px 0 25px}.section-label{display:flex;justify-content:space-between;gap:15px;font-size:10px;letter-spacing:.09em;color:var(--muted);margin-bottom:26px}h2{font-size:18px;font-weight:600;line-height:1.7;margin:0 0 10px}section p{font-size:13px;line-height:1.9;color:var(--muted);margin:0 0 24px}.primary{border:1px solid var(--ink);background:var(--ink);color:var(--paper);padding:13px 20px;min-height:46px;border-radius:5px;font-size:13px;display:inline-flex;align-items:center;gap:25px;transition:background .18s}.primary:hover{background:var(--button-hover)}.small{padding:10px 14px;white-space:nowrap;gap:0}.text-button{background:none;border:0;color:var(--ink);font-size:12px;min-height:44px;padding:8px 10px;border-radius:4px}.text-button:hover{background:var(--hover)}.secondary{color:var(--muted)}.status{font-size:12px;margin:16px 0 0;min-height:20px;color:var(--muted)}.status.error{color:#a33e32}.qr-layout{display:flex;gap:30px;align-items:center;margin-top:20px}.qr-paper{background:#fffefd;padding:12px;border:1px solid var(--line);flex-shrink:0}.qr-paper img{display:block;max-width:100%}.qr-layout p{margin-bottom:6px}.qr-layout .text-button{display:block}.key-label{display:block;font-size:11px;margin:22px 0 9px;color:var(--muted)}.key-field{display:flex;align-items:center;gap:6px;padding:6px;background:var(--surface);border:1px solid var(--line);border-radius:5px}.key-field input{background:transparent;border:0;width:100%;min-width:0;color:var(--ink);font-size:14px;padding:10px;letter-spacing:.03em}.key-note{font-size:11px;margin:11px 0 14px;overflow-wrap:anywhere}.how-to{margin-top:39px}.how-to .section-label{margin-bottom:20px}.how-to h2{font-size:17px}ol{list-style:none;padding:0;margin:24px 0 0}li{display:flex;gap:16px;margin-bottom:20px}li>span{font-family:'Noto Serif SC',serif;color:#99948a;font-size:17px;line-height:1.6;width:18px}li strong{font-size:13px;font-weight:500}li p{font-size:12px;margin:4px 0 0}.daily-note{display:flex;align-items:center;gap:19px;margin-top:36px;padding:22px 0;border-top:1px solid var(--line)}.calendar{font-family:'Noto Serif SC',serif;font-size:35px;line-height:1;color:#aaa497;align-self:flex-start;padding-top:7px}.daily-note p{font-size:12px;line-height:1.9;color:var(--muted);margin:0}.daily-note strong{color:var(--ink);font-weight:500}.daily-note p span{font-size:11px}footer{display:flex;justify-content:space-between;gap:16px;max-width:1200px;padding:25px 44px;margin:auto;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}[hidden]{display:none!important}@media(max-width:540px){.masthead{padding:23px 24px}.edition{display:none}main{margin-top:44px;margin-bottom:55px}.intro{font-size:13px;margin-bottom:34px}.desktop-break{display:none}.qr-layout{gap:18px;flex-wrap:wrap}.qr-layout p{font-size:12px}.qr-paper{padding:8px}.qr-paper img{width:164px;height:164px}h2{font-size:16px}.key-field{flex-wrap:wrap}.key-field input{flex:1 1 160px}.small{flex:1;justify-content:center}footer{padding:20px 24px;flex-direction:column;gap:8px}.section-label{font-size:9px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.theme-toggle{display:flex;align-items:center;gap:8px;color:var(--muted);min-width:72px;justify-content:center}
:root[data-theme="dark"]{color-scheme:dark;--paper:#1c1c1a;--ink:#e8e5df;--muted:#b0aaa0;--line:#3b3934;--accent:#93ae96;--surface:#272622;--hover:#302e29;--button-hover:#d3cec4}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){color-scheme:dark;--paper:#1c1c1a;--ink:#e8e5df;--muted:#b0aaa0;--line:#3b3934;--accent:#93ae96;--surface:#272622;--hover:#302e29;--button-hover:#d3cec4}}
:root[data-theme="dark"] .status.error{color:#ed9b8d}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .status.error{color:#ed9b8d}}