:root{--ink:#15382f;--green:#174c43;--accent:#e8f4a8;--paper:#f5f7f6;--muted:#60716b;--line:#dbe3df;--red:#993d2d;--red-bg:#fff3ed;--white:#fff;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",Arial,sans-serif;font-size:16px;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}button:disabled{cursor:wait;opacity:.65}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #1c7dcd;outline-offset:4px}[hidden]{display:none!important}button{border:0;background:none}.topbar{max-width:1120px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:26px 32px;border-bottom:1px solid var(--line);gap:12px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:1.17rem;font-weight:800;letter-spacing:-.04em}.brand-mark{width:45px;height:45px;background:var(--green);color:var(--accent);display:grid;place-items:center;border-radius:14px 14px 14px 3px;font-size:1.4rem}.brand small{display:block;font-size:.65rem;letter-spacing:.16em;margin-top:5px;font-weight:600;color:var(--muted)}.status-pill{padding:10px 14px;border:1px solid var(--line);background:white;border-radius:30px;font-size:.875rem;font-weight:650;min-height:44px}.status-pill.ready{background:var(--accent);border-color:var(--accent)}main{max-width:1020px;margin:0 auto;padding:40px 28px 140px}.intro{display:flex;justify-content:space-between;align-items:center;gap:16px}.eyebrow{font-size:.875rem;color:var(--muted);letter-spacing:.03em;margin:0 0 10px}h1{font-size:2.2rem;line-height:1.3;letter-spacing:-.065em;margin:0 0 28px;font-weight:750}h2{font-size:1.15rem;line-height:1.5;letter-spacing:-.035em}.language-badge{font-size:.875rem;color:var(--muted);white-space:nowrap}.language-badge span{padding:0 10px}#search-form{margin-bottom:14px}.searchbox{display:flex;align-items:center;gap:14px;background:white;border:2px solid var(--green);padding:0 20px;min-height:66px;border-radius:18px;box-shadow:0 5px 0 #174c4309}.searchbox svg{width:24px;height:24px;stroke:var(--green);stroke-width:1.8;flex-shrink:0}.searchbox input{width:100%;min-width:0;border:0;background:none;padding:18px 0;outline:none;font-size:1.05rem;color:var(--ink)}.searchbox input::placeholder{color:#788780}input::-webkit-search-cancel-button{display:none}#clear-search{font-size:1.5rem;width:44px;min-height:44px}.suggestions{display:flex;align-items:center;flex-wrap:wrap;gap:4px 12px;margin:0 0 26px;font-size:.875rem}.suggestions span{color:var(--muted);margin-right:2px}.suggestions button{padding:8px 0;min-height:36px;text-decoration:underline;text-decoration-color:#b6c5be;text-underline-offset:4px}.allergy-shortcut{width:100%;display:flex;align-items:center;gap:14px;text-align:left;border-radius:14px;padding:17px 20px;background:var(--red-bg);border:1px solid #efdcd2;margin:0 0 28px;color:#71372b}.allergy-symbol{border:1.5px solid #a45c48;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:800;flex-shrink:0}.allergy-shortcut strong{display:block;font-size:1rem}.allergy-shortcut small{display:block;font-size:.875rem;margin-top:6px;color:#8b594c}.shortcut-arrow{margin-left:auto;font-size:1.65rem}.categories{display:flex;gap:8px;flex-wrap:wrap;padding-bottom:24px;border-bottom:1px solid var(--line)}.categories button{border:1px solid var(--line);background:white;border-radius:12px;min-height:44px;padding:10px 16px;font-size:.9375rem;white-space:nowrap}.categories button[aria-pressed="true"]{background:var(--green);color:#fff;border-color:var(--green)}.list-heading{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:24px 0 16px}.list-heading h2{margin:0}.list-heading span{font-size:.875rem;color:var(--muted)}.results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.phrase-card{background:white;border:1px solid var(--line);border-radius:17px;padding:20px 22px;display:flex;flex-direction:column;min-width:0}.card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:9px}.category-label{font-size:.8125rem;color:var(--muted);background:var(--paper);padding:5px 9px;border-radius:6px}.favorite{font-size:1.55rem;width:44px;height:44px;margin:-9px -10px -8px 0}.favorite[aria-pressed="true"]{color:#8f6c05}.ko{font-size:1.04rem;font-weight:650;margin:4px 0 10px;line-height:1.6;word-break:keep-all;overflow-wrap:anywhere}.vi{font-size:1.25rem;font-weight:650;line-height:1.6;color:var(--green);margin:0 0 6px;overflow-wrap:anywhere}.pronunciation{font-size:.875rem;line-height:1.6;color:var(--muted);margin:0 0 18px}.card-actions{display:flex;gap:10px;margin-top:auto;padding-top:14px;border-top:1px solid #edf0ee}.card-actions button{display:flex;justify-content:center;gap:8px;align-items:center;min-height:44px;border-radius:9px;font-size:.9rem}.play-button{flex:1;background:#edf5ef}.show-button{flex:1;background:#f3f5f4}.card-actions svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7}.word-card .vi{font-size:1.6rem;order:0}.word-card .ko{font-size:1rem;font-weight:500}.word-card .card-top{margin-bottom:8px}.footnote{font-size:.8125rem;color:var(--muted);line-height:1.7;margin:28px 0}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:min(100%,660px);z-index:5;display:grid;grid-template-columns:repeat(6,1fr);padding:9px 6px max(10px,env(safe-area-inset-bottom));background:#fff;border:1px solid var(--line);border-bottom:0;border-radius:22px 22px 0 0;box-shadow:0 -8px 30px #15382f08}.bottom-nav button{display:flex;flex-direction:column;align-items:center;gap:5px;min-height:56px;color:var(--muted);font-size:.8125rem;border-radius:12px;padding:5px 2px}.bottom-nav button span{font-size:1.4rem;line-height:1.15}.bottom-nav button[aria-current="page"]{background:var(--green);color:var(--accent)}.empty{grid-column:1/-1;background:#fff;padding:36px 22px;border:1px dashed var(--line);border-radius:16px;text-align:center}.empty h3{margin:0 0 12px}.empty p{color:var(--muted);line-height:1.8}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-height:48px;border-radius:12px;padding:13px 18px;font-size:.9375rem;font-weight:650;text-align:center}.primary{background:var(--green);color:white}.secondary{background:white;border:1px solid var(--line)}.more{display:flex;margin:24px auto 0;min-width:180px}.muted{color:var(--muted);font-size:.875rem;line-height:1.7}.prepare-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px}.prep-card{padding:24px;background:white;border:1px solid var(--line);border-radius:16px;margin-bottom:16px}.prep-card h2{display:inline;margin-left:10px}.prep-card p,.backup-card p{line-height:1.8;font-size:.9375rem}.step-number{font-size:.8125rem;padding:6px;border-bottom:2px solid var(--green);font-weight:700}.prep-card .primary{width:100%}progress{display:block;width:100%;height:10px;border-radius:6px;margin-top:18px;accent-color:var(--green)}.text-button{font-size:.875rem;text-decoration:underline;text-underline-offset:4px;min-height:44px;padding:5px 0}.travel-photo{position:relative;margin:0 0 18px;border-radius:16px;overflow:hidden;background:var(--green)}.travel-photo img{width:100%;height:190px;object-fit:cover;display:block}.travel-photo figcaption{padding:20px;color:var(--accent);font-size:1.1rem}.backup-card{border:1px solid var(--line);padding:22px;border-radius:16px;background:white}.backup-card h2{margin:0}.backup-card a{width:100%;justify-content:space-between}.about{font-size:.8125rem;line-height:1.8;color:var(--muted);margin-top:20px}.about summary{font-size:.875rem;cursor:pointer;min-height:44px;padding:12px 0}.about a{text-underline-offset:3px}dialog{border:0;border-radius:24px;max-width:680px;width:calc(100% - 28px);max-height:calc(100dvh - 32px);padding:28px;color:var(--ink);overflow:auto}dialog::backdrop{background:#0b282bc9;backdrop-filter:blur(5px)}.dialog-top{display:flex;justify-content:space-between;align-items:center}.close{width:48px;height:48px;border-radius:50%;font-size:1.9rem;background:var(--paper)}#dialog-ko{font-size:1.1rem;line-height:1.6;margin:30px 0 18px}#dialog-vi{font-size:clamp(2rem,6vw,3rem);line-height:1.45;margin:0 0 24px;letter-spacing:0;overflow-wrap:anywhere}.dialog-actions{display:flex;gap:12px;margin-top:34px}.dialog-actions button{flex:1}#dialog-note{margin-top:24px}#toast{position:fixed;bottom:calc(100px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);max-width:calc(100% - 32px);padding:13px 20px;background:#143c34;color:white;border-radius:12px;z-index:20;font-size:.875rem;box-shadow:0 5px 30px #0002}#search-hint{margin:-4px 0 18px}.loading{padding:30px 0}.error{color:var(--red)}@media(max-width:640px){.topbar{padding:18px 20px}.brand{font-size:1.05rem}.brand-mark{width:38px;height:38px;border-radius:11px 11px 11px 3px}.brand small{font-size:.6rem}.status-pill{font-size:.75rem;padding:8px 10px}main{padding:28px 20px 132px}h1{font-size:1.8rem;margin-bottom:24px}.eyebrow{font-size:.8125rem}.language-badge{display:none}.searchbox{padding:0 14px;min-height:62px}.searchbox input{font-size:1rem}.suggestions{gap:0 12px;margin-bottom:22px}.suggestions span{display:none}.allergy-shortcut{padding:15px 14px;margin-bottom:22px}.allergy-shortcut strong{font-size:.9375rem}.allergy-shortcut small{font-size:.8125rem}.categories{gap:7px;padding-bottom:20px}.categories button{padding:9px 13px;font-size:.875rem;min-height:42px}.results{grid-template-columns:1fr;gap:12px}.phrase-card{padding:18px 19px}.list-heading{margin-top:22px}.prepare-grid{grid-template-columns:1fr;gap:12px}.prep-card{padding:22px}.word-results{grid-template-columns:repeat(2,minmax(0,1fr))}.word-card{padding:14px 12px}.word-card .vi{font-size:1.35rem}.word-card .card-actions{gap:4px;flex-wrap:wrap}.word-card .card-actions button{font-size:.8125rem;min-width:65px}.word-card .pronunciation{font-size:.8125rem}.word-card .ko{font-size:.9375rem}.word-card .category-label{font-size:.75rem}.word-card .favorite{margin-right:-6px}dialog{padding:22px}.dialog-actions{gap:8px}#dialog-vi{font-size:2.15rem}.travel-photo img{height:auto}.bottom-nav{border-radius:18px 18px 0 0}}@media(prefers-reduced-motion:no-preference){button,a{transition:background .15s,box-shadow .15s}.phrase-card:hover{box-shadow:0 5px 18px #15382f08}}@media(min-width:850px){.results{gap:18px}.phrase-card{padding:22px 24px}.word-results{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(min-width:641px) and (max-width:820px){.language-badge{display:none}}
@media(max-width:640px){.categories{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;margin-right:-20px;padding-right:20px;padding-bottom:16px}.categories button{flex-shrink:0}}

.bottom-nav button{font-size:.875rem}
.study-summary{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:24px;border-radius:18px;background:var(--green);color:white}.study-summary strong{font-size:1.35rem}.study-summary p{line-height:1.7;margin-bottom:0}.study-summary .primary{background:var(--accent);color:var(--ink)}.study-summary progress{flex-basis:100%;accent-color:var(--accent)}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}.lesson-tile{display:flex;flex-direction:column;gap:10px;border:1px solid var(--line);background:white;border-radius:16px;padding:22px;text-align:left;line-height:1.7}.lesson-tile strong{font-size:1.2rem}.lesson-tile .eyebrow{margin:0}.lesson-open{color:var(--green);font-weight:650;margin-top:auto;padding-top:10px}.lesson-heading{margin:18px 0 24px}.lesson-heading h2{font-size:1.65rem;margin:0}.lesson-heading p{line-height:1.8}.study-section{padding:24px;background:white;border:1px solid var(--line);border-radius:16px;margin:18px 0}.study-section h3{font-size:1.2rem;margin:0 0 14px}.lesson-explanation,.quiz-feedback p{white-space:pre-line;line-height:1.9}.study-examples{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.study-example{padding:18px;border-radius:12px;background:var(--paper);min-width:0}.study-example p{line-height:1.7}.study-example .pronunciation{margin-bottom:10px}.study-example .vi{font-size:1.25rem}.study-example .secondary{background:white}.study-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.study-actions button{flex:1;min-width:150px}.quiz-setup{display:flex;flex-direction:column;gap:12px;margin-top:24px}.quiz-setup label{font-weight:650}.quiz-setup select{font:inherit;padding:14px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);width:100%;min-height:48px;margin-bottom:8px}.quiz-setup select:focus-visible{outline:3px solid #1c7dcd}.resume-quiz{background:var(--accent);border-radius:14px;padding:20px;margin:18px 0}.quiz-top{display:flex;justify-content:space-between;align-items:center}.quiz-card{margin-top:24px;padding:28px;background:white;border:1px solid var(--line);border-radius:18px}.quiz-card h2{font-size:1.4rem;line-height:1.6}.quiz-options{display:grid;gap:12px;margin:24px 0}.quiz-option{display:flex;gap:14px;align-items:center;min-height:64px;padding:16px;border:1px solid var(--line);background:var(--paper);border-radius:12px;text-align:left;line-height:1.7;overflow-wrap:anywhere}.quiz-option>span:first-child{flex-shrink:0;font-weight:700}.quiz-option:disabled{opacity:1;cursor:default}.quiz-option.correct{background:#e8f4dc;border-color:#43752d}.quiz-option.incorrect{background:var(--red-bg);border-color:var(--red)}.quiz-feedback{padding:18px;border-radius:12px;background:var(--paper)}.quiz-next{width:100%;margin-top:22px}.quiz-result{text-align:center;background:white;border:1px solid var(--line);border-radius:18px;padding:32px 22px}.quiz-result h2{font-size:4rem;margin:10px 0;color:var(--green)}.quiz-result small{font-size:1.3rem;margin-left:8px}#study-content,#quiz-content{max-width:850px;margin:auto}@media(max-width:640px){.lesson-grid,.study-examples{grid-template-columns:1fr}.study-summary{padding:20px}.study-section,.quiz-card{padding:20px}.quiz-card h2{font-size:1.2rem}.study-example{padding:16px}.lesson-tile{padding:20px}.bottom-nav button{font-size:.875rem}.study-actions{gap:10px}}