@font-face{font-family:SeedSans;src:local('Pretendard'),local('Apple SD Gothic Neo'),local('Noto Sans CJK KR');font-display:swap}
:root{font-family:SeedSans,-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans KR',sans-serif;color:#25372f;background:#f8f9f5;font-synthesis:none;--green:#174c3c;--green-light:#edf3e8;--muted:#7a827b;--line:#e5e9e1;--red:#ac5143;--surface:#fff;--radius:20px}
*{box-sizing:border-box}body{margin:0;line-height:1.6;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button{color:inherit}a{color:inherit;text-decoration:none}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #67977b;outline-offset:4px}button{border:0;background:none}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.4;word-break:keep-all}h1{letter-spacing:-1.1px}svg{flex-shrink:0}.icon{width:22px;height:22px;vertical-align:middle;flex-shrink:0}.muted{color:var(--muted)}.red-title,.highlight{color:var(--red)}.mobile-only{display:none}.full{width:100%}.skip-link{position:fixed;top:-100px;left:16px;padding:12px;background:white;z-index:100}.skip-link:focus{top:12px}
.site-header{background:rgba(248,249,245,.95);border-bottom:1px solid var(--line)}.header-inner{max-width:920px;margin:auto;min-height:88px;padding:16px 32px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:800;line-height:1.2;letter-spacing:-.7px}.brand-mark{display:grid;place-items:center;background:var(--green);color:#d8edaa;width:42px;height:44px;border-radius:13px}.brand-mark .icon{width:27px;height:27px}.brand small{display:block;font-size:8px;letter-spacing:1.5px;margin-top:5px;color:#72806f;font-weight:600}.header-subject{font-size:12px;color:#768171;margin-left:auto}.header-subject span{margin:0 9px;color:#b4bcb1}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:13px;flex-shrink:0}.icon-button:hover{background:#eaf0e5}.header-inner>.icon-button{color:#62735f;border:1px solid var(--line)}
main{max-width:856px;margin:0 auto;padding:36px 32px 124px;min-height:calc(100svh - 90px)}main:focus{outline:none}.eyebrow{font-size:11px;font-weight:700;letter-spacing:1.3px;color:#72816a}.welcome{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:26px}.welcome h1{font-size:28px;font-weight:750;margin-top:8px}.streak{display:flex;gap:5px;align-items:center;background:#f0f1e6;color:#6a7751;font-size:12px;font-weight:700;padding:7px 12px;border-radius:30px;white-space:nowrap}.streak .icon{width:16px;height:16px}
.hero{position:relative;background:var(--green);color:#fff;border-radius:24px;overflow:hidden;padding:33px 34px 30px;min-height:321px}.hero-content{position:relative;z-index:2}.hero-label{display:flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.9px;color:#cfdec6}.hero-label>span{width:5px;height:5px;border-radius:50%;background:#d8edaa}.hero h2{font-size:28px;letter-spacing:-.8px;line-height:1.5;margin-top:13px;font-weight:650}.hero p{color:#c2d4c5;font-size:13px;margin-top:12px;line-height:1.85}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:13px 20px;border-radius:13px;font-size:14px;font-weight:700;transition:background .15s,transform .15s}.button:active{transform:scale(.985)}.button .icon{width:19px;height:19px}.hero-button{background:#dcecba;color:#25412c;margin-top:24px;min-height:49px;font-size:13px}.hero-button:hover{background:#e8f2d5}.hero-footnote{display:flex;align-items:center;gap:5px;font-size:10px;color:#a9c1aa;margin-top:12px}.hero-footnote .icon{width:12px;height:12px}.botanical{position:absolute;width:250px;height:275px;right:28px;top:34px;color:#c4d49f;transform:rotate(10deg)}.hero-watermark{position:absolute;font-family:Georgia,serif;font-style:italic;font-size:64px;letter-spacing:-3px;bottom:-8px;right:27px;color:#c4d49f;opacity:.22}
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.bottom-nav{position:fixed;z-index:10;bottom:0;left:0;right:0;background:rgba(255,255,255,.96);backdrop-filter:blur(15px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.bottom-nav>div{max-width:720px;margin:auto;display:grid;grid-template-columns:repeat(5,1fr)}.nav-item{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;font-size:10px;color:#939c8c;min-height:75px;position:relative}.nav-item .icon{width:22px;height:22px}.nav-item.active{color:var(--green);font-weight:700}.nav-item.active::before{content:'';position:absolute;top:0;width:23px;height:3px;background:var(--green);border-radius:0 0 3px 3px}.nav-item.active .icon{stroke-width:2}
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23px;border:1px solid #dfe6d5;border-radius:23px;background:#fff;box-shadow:0 5px 0 #f0f3e9,0 6px 0 #e1e7d8;display:flex;align-items:center;flex-direction:column;text-align:center;position:relative;transition:background .2s}.flash-card.revealed{background:#fdfef9}.card-eyebrow{font-size:9px;letter-spacing:1.7px;color:#9ca78b;font-weight:600}.flash-question{font-size:24px;line-height:1.6;font-weight:650;letter-spacing:-.6px;word-break:keep-all;overflow-wrap:anywhere;margin:auto 0;padding:35px 0;max-width:600px}.flash-card.revealed .flash-question{font-size:16px;font-weight:500;color:#738464;margin:0;padding:22px 0 17px}.flip-hint{display:flex;align-items:center;gap:6px;color:#a3ae93;font-size:11px;margin:16px 0 30px}.flip-hint .icon{width:15px;height:15px}.card-page{display:block;font-size:8px;font-weight:500;letter-spacing:1.2px;color:#b0b8a2;margin-top:auto;padding-top:15px}.card-page>span{margin:0 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.search-box{display:flex;align-items:center;gap:12px;background:white;border:1px solid var(--line);border-radius:13px;padding:0 16px;height:53px;color:#98a38d}.search-box>.icon{width:19px;height:19px}.search-box input{border:0;background:none;outline:none;min-width:0;width:100%;height:100%;color:#4e6542;font-size:13px}.search-box input::placeholder{color:#a2ac95}.library-filters{margin-top:16px}.result-count{font-size:11px;color:#9da78e;margin:20px 0 12px}.herb-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.herb-card{border:1px solid var(--line);border-radius:17px;position:relative;background:white;overflow:hidden}.herb-open{display:flex;gap:12px;width:100%;padding:20px 15px;text-align:left;align-items:flex-start}.herb-number{font-size:10px;font-weight:600;color:#98a789;min-width:23px;height:24px;display:grid;place-items:center;border-radius:6px;background:#f0f4ea;margin-top:2px;font-variant-numeric:tabular-nums}.herb-info{min-width:0;flex:1}.herb-title{display:block;font-size:18px;font-weight:700;letter-spacing:-.5px;line-height:1.5;padding-right:20px}.herb-title small{font-size:10px;font-weight:400;color:#a1a991;white-space:nowrap}.small-star{font-size:11px;color:#b39860}.herb-latin{display:block;font-size:10px;color:#95a187;font-style:italic;line-height:1.5;margin-top:2px;padding-right:10px}.herb-key{display:block;font-size:11px;color:#708463;margin-top:13px;line-height:1.7;word-break:keep-all;overflow-wrap:anywhere}.herb-meta{display:flex;gap:8px;align-items:center;margin-top:14px;font-size:9px;color:#a5ad97}.herb-meta>span:first-child{background:#f3f5ef;color:#9ba78d;padding:3px 6px;border-radius:4px}.herb-open>.icon{width:14px;height:14px;color:#b3bca6;align-self:center}.herb-bookmark{position:absolute;right:7px;top:7px;width:36px;height:36px;border-radius:9px}.herb-bookmark .icon{width:16px;height:16px}.herb-card:hover{border-color:#b8c8ab}.library-footnote{margin-top:25px;font-size:10px;color:#a2ac93;line-height:1.9;word-break:keep-all}.empty-state{padding:55px 12px;text-align:center}.empty-state>.icon{width:32px;height:32px;color:#acb99e}.empty-state h2{font-size:18px;margin-top:18px}.empty-state p{font-size:12px;color:#99a68c;margin-top:8px}
.comparison-list{display:grid;gap:15px;margin-bottom:24px}.comparison-group{background:#fff;border:1px solid var(--line);border-radius:19px;overflow:hidden}.comparison-group summary{display:flex;align-items:center;justify-content:space-between;padding:23px;cursor:pointer;list-style:none;gap:12px}.comparison-group summary::-webkit-details-marker{display:none}.comparison-group summary .eyebrow{font-size:9px;color:#a0906f;letter-spacing:.5px}.comparison-group summary h2{font-size:18px;letter-spacing:-.5px;margin-top:5px}.comparison-group summary>.icon{color:#9aa88c;width:17px;height:17px;transition:transform .2s}.comparison-group[open] summary>.icon{transform:rotate(90deg)}.comparison-body{padding:0 23px 23px}.comparison-takeaway{display:flex;gap:8px;align-items:flex-start;background:#f1f5e9;border-radius:11px;padding:14px;font-size:12px;color:#7c8c66;word-break:keep-all}.comparison-takeaway>.icon{width:16px;height:16px;margin-top:2px}.compare-entries{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.compare-entry{border:1px solid #e5eadb;border-radius:12px;padding:16px;background:#fdfefb}.compare-entry h3{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:16px;min-height:35px;letter-spacing:-.3px}.compare-entry h3>.icon-button{width:32px;height:32px;color:#99a889}.compare-entry h3 .icon{width:16px;height:16px}.compare-entry>strong{display:block;font-size:12px;color:#a17656;line-height:1.7;font-weight:600;margin:6px 0 11px;overflow-wrap:anywhere}.compare-entry>p{font-size:12px;color:#6a825b;line-height:1.8;word-break:keep-all}.compare-entry>span{display:block;font-size:11px;color:#96a286;line-height:1.8;margin-top:10px;word-break:keep-all}
dialog{max-width:650px;width:calc(100% - 40px);max-height:87svh;padding:26px 28px 24px;border:1px solid var(--line);border-radius:24px;background:#fcfdf9;color:var(--green);overflow:auto;overscroll-behavior:contain;box-shadow:0 24px 80px #153b2c33}dialog::backdrop{background:#193b2d65;backdrop-filter:blur(4px)}body:has(dialog[open]){overflow:hidden}.dialog-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px;gap:12px}.dialog-top .eyebrow{font-size:10px}.dialog-top h2{font-size:20px;letter-spacing:-.5px}.dialog-top>.icon-button{color:#879f73;margin-right:-8px;margin-top:-8px}.detail-heading{display:flex;justify-content:space-between;gap:15px}.detail-heading h2{font-size:31px;letter-spacing:-1px}.detail-heading h2 small{font-size:12px;letter-spacing:0;font-weight:400;color:#8fa07d}.detail-heading p{font-size:16px;color:#768f60;font-style:italic;overflow-wrap:anywhere}.detail-heading .muted{font-size:11px;color:#a2af93;display:block;margin-top:5px}.detail-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:18px}.key-note{display:flex;gap:10px;background:#eff4e8;padding:16px;border-radius:12px;margin:23px 0 26px;align-items:flex-start}.key-note>.icon{width:18px;height:18px;color:#93aa7b;margin-top:2px}.key-note>strong{font-size:13px;font-weight:600;color:#6b8458;overflow-wrap:anywhere}.detail-content section{padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--line)}.detail-content h3{font-size:12px;letter-spacing:.5px;color:#7c9368;display:flex;align-items:center;gap:8px}.detail-content h3:before{content:'';width:3px;height:12px;background:#b1c59a;border-radius:2px}.detail-content dl{margin:13px 0 0;display:grid;gap:13px}.detail-content dt{font-size:11px;font-weight:650;margin-bottom:4px;color:#889f74}.detail-content dt.highlight{color:var(--red)}.detail-content dd{margin:0;font-size:13px;line-height:1.9;color:#586d4a;word-break:keep-all;overflow-wrap:anywhere}.detail-footnote{font-size:11px;color:#9cae89}.detail-footer{display:flex;gap:20px;justify-content:space-between;align-items:center;margin-top:25px}.detail-footer .source-link{margin-left:0}.detail-footer .button{font-size:12px;min-height:47px}.settings-section{padding:20px 0;border-bottom:1px solid var(--line)}.settings-section h3{font-size:15px;margin-bottom:10px}.settings-section p{font-size:12px;color:#82966e;line-height:1.9;margin-bottom:10px;word-break:keep-all;overflow-wrap:anywhere}.settings-section p.settings-small{font-size:10px;color:#a0af8e;margin-top:12px}.backup-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.backup-buttons .button{font-size:11px;padding:12px 8px;gap:5px}.danger{color:#b78b6d}.settings-brand{display:flex;align-items:center;gap:6px;color:#8ca077;font-size:12px;margin-top:24px}.settings-brand>.icon{width:18px;height:18px}.settings-brand>span{font-size:9px;color:#afbaa1;margin-left:auto}
#toast{position:fixed;bottom:calc(95px + env(safe-area-inset-bottom));left:50%;transform:translate(-50%,15px);background:#284536;box-shadow:0 5px 25px #1f35252b;color:white;font-size:12px;text-align:center;padding:13px 20px;border-radius:13px;max-width:calc(100% - 36px);width:max-content;z-index:50;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;word-break:keep-all}#toast.visible{opacity:1;transform:translate(-50%,0)}
@media(min-width:800px){main{padding-top:42px}.hero{min-height:329px}.hero h2{font-size:31px}.botanical{right:38px;width:280px;height:310px;top:12px}.hero-watermark{font-size:76px;right:28px}.flash-card{min-height:360px}.setup-card{padding:30px}.summary{max-width:490px;margin:auto}.page-title{margin-bottom:32px}}
@media(max-width:600px){.header-inner{min-height:75px;padding:14px 22px;gap:14px}.brand{font-size:19px;gap:9px}.brand-mark{width:35px;height:37px;border-radius:11px}.brand-mark .icon{width:23px;height:23px}.brand small{font-size:7px;letter-spacing:1.15px;margin-top:4px}.header-subject{font-size:10px}.header-subject span{margin:0 5px}.header-inner>.icon-button{width:35px;height:35px;border-radius:10px}.header-inner>.icon-button .icon{width:18px;height:18px}main{padding:27px 21px 112px}.welcome{margin-bottom:23px}.welcome .eyebrow{font-size:9px;letter-spacing:.9px}.welcome h1{font-size:25px;line-height:1.42;margin-top:7px}.mobile-only{display:initial}.streak{font-size:10px;padding:6px 10px;align-self:flex-start;margin-top:23px}.streak .icon{width:14px;height:14px}.hero{padding:26px 24px 23px;border-radius:21px;min-height:314px}.hero h2{font-size:23px;line-height:1.5;margin-top:13px;letter-spacing:-.7px}.hero-label{font-size:9px}.hero p{font-size:11px;line-height:1.85;margin-top:11px}.hero-button{font-size:12px;margin-top:22px;padding:12px 15px;min-height:46px;gap:13px}.hero-button .icon{width:16px;height:16px}.hero-footnote{font-size:9px;margin-top:11px}.botanical{width:143px;height:195px;right:-16px;top:87px;opacity:.42}.hero-watermark{font-size:52px;bottom:-9px;right:10px}.stats-grid{margin:18px 0 28px;padding:18px 0;border-radius:15px}.stats-grid>div{padding:0 13px}.stats-grid>div>span{font-size:9px;white-space:nowrap;letter-spacing:-.4px}.stats-grid strong{font-size:23px;margin-top:5px}.stats-grid small{font-size:10px;letter-spacing:-.4px}.stats-grid p{font-size:8px;margin-top:9px;letter-spacing:-.4px}.mini-track{margin-top:13px}.section-block{margin-top:24px}.section-heading{margin-bottom:12px}.section-heading h2{font-size:16px}.section-heading>span,.section-heading>a{font-size:10px}.mode-grid{grid-template-columns:1fr;gap:10px}.mode-card{padding:15px 16px;border-radius:15px;gap:13px}.mode-icon{width:43px;height:45px;border-radius:12px}.mode-icon>.icon{width:21px;height:21px}.mode-card strong{font-size:14px}.mode-card small{font-size:10px;margin-top:3px}.mode-card>.icon{width:15px;height:15px}.comparison-preview{padding:20px 18px;border-radius:16px}.comparison-preview h3{font-size:18px;margin-top:8px}.comparison-preview h3 span{font-size:15px;margin:0 5px}.comparison-preview p{font-size:10px;margin-top:7px}.comparison-art{font-size:32px;gap:5px;padding:0 0 0 7px}.comparison-art>span{font-size:18px}.comparison-preview>.icon{display:none}.source-note{gap:8px;padding:18px 0 0;margin-top:12px}.source-note p{font-size:9px;letter-spacing:-.3px}.source-note p span{font-size:8px}.source-note>a{font-size:9px;gap:3px}.nav-item{min-height:68px;font-size:9px;gap:4px}.nav-item>.icon{width:21px;height:21px}.page-title h1{font-size:27px}.page-title .eyebrow{font-size:10px}.page-title>p:last-child{font-size:12px}.setup-card{padding:21px 18px;border-radius:19px}.setup-intro{gap:10px;padding-bottom:20px;margin-bottom:22px}.setup-intro h2{font-size:15px}.setup-intro p{font-size:10px}.chip{padding:8px 11px;font-size:11px;min-height:38px}.chip-group{gap:6px}.setup-count>span{font-size:12px}.setup-count>small{font-size:10px}.button{font-size:13px;min-height:51px}.tip{gap:8px}.tip p{font-size:10px}.tip strong{font-size:11px}.session-heading{margin-top:-10px;gap:8px;font-size:12px}.session-heading .muted{font-size:10px}.session-progress{margin-top:10px;margin-bottom:16px}.study-topline{margin-bottom:9px}.flash-card{min-height:328px;padding:25px 21px 19px;border-radius:21px}.flash-question{font-size:22px;line-height:1.65;padding:28px 0}.flash-card.revealed .flash-question{font-size:14px;padding:21px 0 16px}.flash-answer{font-size:24px;line-height:1.5}.flash-explanation{font-size:12px;line-height:1.8}.card-eyebrow{font-size:8px;letter-spacing:1.4px}.card-page{font-size:7px}.flip-hint{font-size:10px}.grade-prompt{font-size:11px;margin-top:25px}.grade-buttons{gap:8px}.grade{min-height:99px;padding:14px 5px}.grade strong{font-size:12px}.grade span{font-size:9px}.study-help{font-size:10px;margin-top:26px}.quiz-question{margin:23px 0}.quiz-question h1{font-size:22px;line-height:1.55;margin-top:18px}.quiz-question>p{font-size:11px}.quiz-option{font-size:13px;padding:15px 14px;gap:12px;min-height:65px;border-radius:13px}.option-number{width:29px;height:29px;font-size:11px}.quiz-options{gap:10px}.answer-feedback{padding:17px}.answer-feedback>strong{font-size:12px}.answer-feedback p{font-size:11px}.answer-feedback .correct-answer{font-size:13px}.summary h1{font-size:25px}.summary>p:not(.eyebrow){font-size:12px}.summary-stats>div{padding:0 26px}.herb-grid{grid-template-columns:1fr;gap:11px}.herb-open{padding:18px 16px;gap:13px}.herb-title{font-size:18px}.herb-latin{font-size:11px}.herb-key{margin-top:10px;font-size:11px}.herb-meta{margin-top:11px;font-size:9px}.herb-number{font-size:11px;min-width:26px;height:26px}.herb-bookmark{right:10px;top:11px}.herb-bookmark .icon{width:17px;height:17px}.herb-open>.icon{margin-right:3px}.search-box input{font-size:16px;letter-spacing:-.7px}.search-box input::placeholder{font-size:12px;letter-spacing:0}.comparison-group summary{padding:20px 18px}.comparison-group summary h2{font-size:16px;margin-top:5px}.comparison-group summary .eyebrow{font-size:8px}.comparison-body{padding:0 18px 18px}.comparison-takeaway{font-size:11px;padding:12px;gap:7px}.compare-entries{grid-template-columns:1fr;gap:10px;margin-top:13px}.compare-entry{padding:14px 15px}.compare-entry h3{font-size:15px}.compare-entry>strong{font-size:11px;margin-top:3px}.compare-entry>p{font-size:11px}.compare-entry>span{font-size:10px}.library-footnote{font-size:9px}dialog{width:100%;max-width:100%;max-height:92svh;margin:auto 0 0;padding:25px 23px 27px;padding-bottom:calc(27px + env(safe-area-inset-bottom));border-radius:24px 24px 0 0;border-bottom:0}.detail-heading h2{font-size:29px}.detail-heading p{font-size:15px}.detail-heading h2 small{font-size:11px}.detail-content dd{font-size:12px}.detail-content dt{font-size:10px}.key-note>strong{font-size:12px}.detail-tags .tag{font-size:9px}.dialog-top h2{font-size:19px}.settings-section p{font-size:11px}.settings-section h3{font-size:14px}#toast{font-size:11px;bottom:calc(85px + env(safe-area-inset-bottom))}}
@media(max-width:359px){.header-subject{display:none}.header-inner>.icon-button{margin-left:auto}.header-inner{padding-left:17px;padding-right:17px}main{padding-left:17px;padding-right:17px}.hero{padding-left:20px;padding-right:20px}.hero h2{font-size:21px}.stats-grid>div{padding:0 10px}.stats-grid>div>span{font-size:8px}.stats-grid strong{font-size:21px}.stats-grid p{font-size:7px}.comparison-art{display:none}.flash-question{font-size:20px}.grade strong{font-size:11px}.summary-stats>div{padding:0 20px}}
.brand>span:last-child{font-size:20px;white-space:nowrap}
@media(max-width:600px){.brand>span:last-child{font-size:16px}.settings-brand{flex-wrap:wrap}}
/* Study content stays readable on a phone, including longer source explanations. */
.detail-content dd{font-size:14px;color:#4d6242}.detail-content dt{font-size:12px}.compare-entry>p{font-size:13px;color:#597449}.compare-entry>span{font-size:12px;color:#7b8b6c}.compare-entry>strong{font-size:13px}.herb-key{font-size:12px;color:#657a56}.flash-explanation{color:#687f57}.answer-feedback p{font-size:13px}.settings-section p{font-size:13px}.page-title>p:last-child{color:#748268}.mode-card small{color:#78886b}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}