:root{--ink:#183c43;--muted:#62757b;--teal:#137f75;--teal-hover:#0e685f;--mint:#e8f4ef;--blue:#245e9e;--surface:#fff;--page:#f5f8fa;--line:#e0e8e9;--danger:#a93034;--radius:20px;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--page);font-synthesis:none;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.7}button,input,textarea{font:inherit}button,a,input,textarea,summary{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}a{color:inherit;text-decoration:none}button{color:inherit}svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button,a,summary{transition:background .16s,color .16s,box-shadow .16s}button:active{filter:brightness(.94)}:focus-visible{outline:3px solid #2b78d0;outline-offset:4px}button:focus:not(:focus-visible){outline:none}.sprite{position:absolute;width:0;height:0;overflow:hidden}[hidden]{display:none!important}.skip{position:fixed;top:8px;left:8px;padding:12px;background:white;z-index:100;transform:translateY(-160%)}.skip:focus{transform:none}.app-shell{min-height:100vh;display:grid;grid-template-columns:248px 1fr}.sidebar{background:white;border-right:1px solid var(--line);position:fixed;inset:0 auto 0 0;width:248px;padding:36px 24px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:11px;font-size:22px;font-weight:750;letter-spacing:.02em}.brand img{border-radius:12px}.brand small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:.08em}.side-caption{font-size:11px;letter-spacing:.08em;color:#7c8b90;margin:48px 16px 15px}.navigation{display:grid;gap:10px}.nav-item{border:0;background:transparent;width:100%;display:flex;align-items:center;gap:15px;padding:15px 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44px;gap:16px}.desktop-top{font-size:13px;color:var(--muted);letter-spacing:.05em}.mobile-brand{display:none}.privacy-trigger{background:transparent;border:0;display:flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);min-height:44px}.privacy-trigger svg{width:15px;height:15px}.content{max-width:1320px;margin:0 auto;padding:42px 44px 20px}.page-heading{margin-bottom:32px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:.18em;color:var(--teal)}h1{font-size:32px;letter-spacing:-.035em;line-height:1.4;margin:9px 0 8px}h2{font-size:19px;letter-spacing:-.025em;line-height:1.5;margin:0 0 8px}h3{font-size:15px;margin:20px 0 8px}p{margin:0 0 14px}.page-heading>p{font-size:14px;color:var(--muted);margin:0}.check-layout{display:grid;grid-template-columns:minmax(0,1fr) 272px;gap:24px}.primary-column{min-width:0}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 4px 14px #1d3d4803}.check-card{padding:28px}.card-heading{display:flex;align-items:center;gap:14px;margin-bottom:26px}.icon-tile{width:45px;height:45px;background:var(--mint);color:var(--teal);border-radius:13px;display:grid;place-items:center;flex-shrink:0}.icon-tile svg{width:22px;height:22px}.card-heading h2{margin:0;font-size:18px}.card-heading p{font-size:12px;color:var(--muted);margin:2px 0 0}.local-badge{margin-left:auto;background:#eff7f3;color:#237760;font-size:10px;padding:4px 9px;border-radius:6px;white-space:nowrap}label{display:block;font-size:13px;font-weight:600;margin:16px 0 9px}textarea,input[type=text],input:not([type]){display:block;width:100%;border:1px solid #cfdbde;background:#fcfdfd;border-radius:10px;padding:15px 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.help-link{font-size:12px;color:var(--teal);display:inline-flex;align-items:center;min-height:44px;font-weight:600}.help-caption,.help-source{display:block;font-size:9px;color:var(--muted)}.help-source{min-height:44px;display:inline-flex;align-items:center;text-decoration:underline;text-underline-offset:3px}.native-app .brand{pointer-events:none}.native-app .side-bottom>a,.native-app .about-card>a{display:none}.close-button{width:44px;height:44px}.note-delete,.example-row button{min-height:44px}
@media(min-width:1600px){.content{padding-top:60px}.check-layout{grid-template-columns:minmax(0,1fr) 300px}.check-card{padding:34px}.daily-card{padding:30px}.page-heading{margin-bottom:40px}}
@media(max-width:1160px){.app-shell{grid-template-columns:210px 1fr}.sidebar{width:210px;padding:30px 18px}.brand{font-size:19px}.brand small{font-size:9px}.brand img{width:36px;height:36px}.content{padding:32px 28px 20px}.topbar{padding:0 28px}.check-layout{grid-template-columns:minmax(0,1fr) 225px;gap:18px}.check-card{padding:22px}.daily-card{padding:23px 18px}.mini-tip{justify-content:flex-start;gap:5px}.mini-tip>span:not(.tip-label):not(.tip-dot){display:none}.card-heading{gap:10px}.local-badge{padding:3px 6px;font-size:9px}.card-heading h2{font-size:16px}.card-heading p{font-size:10px}.lesson summary{padding:20px;gap:12px}.lesson summary strong{font-size:14px}.toast{left:calc(50% + 105px)}}
@media(max-width:950px){.check-layout{grid-template-columns:1fr}.right-column{display:grid;grid-template-columns:1.1fr 1fr;gap:20px}.daily-card{padding:22px}.daily-card .shield-illustration{display:none}.daily-card h2{text-align:left;margin-top:8px}.daily-card p{font-size:11px;margin-bottom:3px}.daily-card .text-button{font-size:11px}.note-card{margin:0;padding:20px 0}.lesson-grid,.settings-grid,.notes-layout{grid-template-columns:1fr}.lesson summary strong{font-size:16px}.lesson summary{min-height:100px}.settings-grid>.card{padding:24px}.notes-list-wrap{margin-top:8px}}
@media(max-width:700px){.app-shell{display:block}.sidebar{position:fixed;inset:auto 0 0;width:100%;padding:0;background:white;box-shadow:0 -2px 20px #264c5406;border:0;border-top:1px solid var(--line);z-index:30}.sidebar>.brand,.side-caption,.side-bottom{display:none}.navigation{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:7px 4px calc(6px + env(safe-area-inset-bottom,0px))}.nav-item{display:flex;flex-direction:column;gap:3px;padding:8px 4px;font-size:10px;border-radius:9px;text-align:center;line-height:1.5}.nav-item svg{width:21px;height:21px}.nav-item.active{background:transparent;color:var(--teal)}.nav-item.active:before{content:"";position:absolute;top:0;width:24px;height:3px;background:var(--teal);border-radius:0 0 4px 4px}.desktop-top{display:none}.mobile-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700}.mobile-brand img{border-radius:8px}.topbar{height:auto;min-height:69px;padding:calc(8px + env(safe-area-inset-top,0px)) 20px 8px}.privacy-trigger{font-size:11px}.content{padding:28px 20px calc(100px + env(safe-area-inset-bottom,0px))}.page-heading{margin-bottom:25px}.eyebrow{font-size:8px;letter-spacing:.14em}h1{font-size:29px;margin:8px 0}.page-heading>p{font-size:12px}.check-card{padding:22px 18px;border-radius:17px}.card-heading{gap:11px;margin-bottom:22px}.card-heading h2{font-size:17px}.card-heading p{font-size:11px}.icon-tile{width:40px;height:40px;border-radius:11px}.local-badge{font-size:9px;padding:3px 7px}.card-heading .icon-tile{width:37px;height:40px}.check-card form>label{font-size:12px}.check-card textarea{min-height:164px;font-size:13px;padding:13px 12px}.input-meta{font-size:9px;gap:5px;margin-bottom:17px}.input-meta #char-count{font-size:8px}.example-row{gap:5px;margin-bottom:20px}.example-row button{padding:6px 8px;font-size:10px}.example-row>span{font-size:10px}.button{min-height:48px}.card-footnote{font-size:9px;margin-top:19px;padding-top:16px;gap:4px}.card-footnote svg{width:11px;height:14px}.mini-tip{font-size:10px;justify-content:center;padding:19px 0}.mini-tip strong{font-size:10px}.mini-tip .tip-label{font-size:9px}.right-column{display:block}.daily-card{display:grid;grid-template-columns:1fr auto;padding:22px;gap:0 20px}.daily-card .eyebrow,.daily-card h2,.daily-card p,.daily-card .text-button{grid-column:1}.daily-card .shield-illustration{display:grid;grid-column:2;grid-row:1/5;width:65px;height:90px;margin:0;align-self:center}.shield-illustration>svg{width:58px;height:75px}.shield-illustration:before{width:82px;height:82px}.shield-illustration:after{width:105px;height:105px}.shield-illustration>span{width:14px;height:14px;bottom:4px;right:-4px}.daily-card h2{font-size:16px;margin:5px 0 8px}.daily-card p{font-size:10px}.daily-card .text-button{margin-top:0;min-height:35px}.note-card{padding:23px 8px 0}.note-card h3{font-size:12px}.note-card p{font-size:11px}.result{padding:22px 18px;border-radius:17px}.lesson-grid{gap:14px}.lesson summary{padding:20px 18px}.lesson-content{padding:0 18px 18px}.notes-layout{gap:24px}.note-form-card{padding:22px 18px}.settings-grid{gap:16px}.settings-grid>.card{padding:24px 20px}.app-footer{margin-top:30px;display:block;font-size:9px;text-align:center}.app-footer span{display:block;margin-top:5px}.toast{bottom:calc(95px + env(safe-area-inset-bottom,0px));left:50%;width:max-content;font-size:12px;padding:11px 16px}dialog{padding:24px 20px}.dialog-heading h2{font-size:18px}}
@media(max-width:360px){.content{padding-right:14px;padding-left:14px}.topbar{padding-right:14px;padding-left:14px}.local-badge{display:none}.input-meta{flex-wrap:wrap}.card-heading p{font-size:10px}.daily-card{gap:0 12px}.daily-card .shield-illustration{width:48px}.daily-card h2{font-size:15px}.example-row button{padding:5px 7px}.example-row{gap:4px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
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p{font-size:12px;color:#cce0e5;line-height:1.9;margin-bottom:18px}.banner-button{background:#fff;color:#24626d;min-height:42px;font-size:12px;border-radius:7px;padding:10px 16px}.banner-button:hover{background:#e6f5f0}.banner-button svg{width:17px;height:17px}.home-shield{display:grid;place-items:center;position:relative;min-height:230px}.home-shield>svg{width:116px;height:142px;stroke:#c1e5e0;fill:#c9eee418;stroke-width:1;z-index:2;filter:drop-shadow(0 8px 15px #073f5060)}.shield-orbit{position:absolute;width:205px;height:205px;border:1px solid #a9e2d52e;border-radius:50%}.shield-orbit.two{width:260px;height:260px;border-color:#a9e2d519}.orbit-dot{position:absolute;width:11px;height:11px;background:#6bbcb2;border-radius:50%;box-shadow:0 0 0 5px 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