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/* 브라우저 안에서만 작동하는 편집 도구 */
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@media(min-width:1400px){.wrap{max-width:1220px}.hero{gap:95px;padding-top:75px;padding-bottom:75px}.hero h1{font-size:56px}}
@media(max-width:1000px){.header-inner{gap:25px}.header nav{gap:20px}.hero{gap:35px}.hero h1{font-size:43px}.hero-actions{gap:14px;flex-wrap:wrap}.concept-panel{padding:23px}.concept-panel h2{font-size:25px}.home-bottom{gap:35px}.article-header{margin-left:215px}.reading-layout{grid-template-columns:175px minmax(0,1fr);gap:40px}.trust-layout{grid-template-columns:200px minmax(0,1fr);gap:40px}.admin-form-grid{grid-template-columns:1fr}.admin-form-side{grid-template-columns:1fr 1fr}.admin-stats{grid-template-columns:1fr 1fr}}
@media(max-width:760px){body{font-size:14px}.wrap{padding:0 22px}.header{height:auto}.header-inner{flex-wrap:wrap;gap:0;padding-top:19px}.brand{font-size:22px}.header nav{order:3;width:100%;margin:15px 0 0;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding:3px 0}.header nav a{font-size:12px;padding:13px 0}.search-link{margin-left:auto;padding-left:0;border:0}.search-link span{display:none}.hero{grid-template-columns:1fr;padding:37px 0 35px;gap:34px}.hero .eyebrow{font-size:11px}.hero h1{font-size:39px;margin:17px 0 20px}.hero-description{font-size:14px;line-height:1.9}.hero-actions{margin:25px 0 22px;gap:20px}.hero-actions .button{font-size:12px;padding:12px 16px}.hero-actions .text-link{font-size:12px}.hero-foot{font-size:10px}.concept-panel{padding:22px 25px}.concept-top{margin-bottom:15px}.concept-panel h2{font-size:26px}.hero-chart{max-height:170px;margin:2px 0}.concept-bottom{padding-top:15px}.concept-bottom p{font-size:11px}.section-head h2{font-size:22px}.section-head .eyebrow{font-size:10px}.section-head .text-link{font-size:11px;gap:7px}.category-section{padding-top:27px;padding-bottom:36px}.category-grid{grid-template-columns:1fr 1fr;border:0;gap:0}.category-tile{border:1px solid var(--line)!important;padding:15px;margin-right:-1px;margin-bottom:-1px}.category-tile:last-child{grid-column:1/-1;display:grid;grid-template-columns:30px 1fr auto;align-items:center;gap:10px}.category-tile:last-child .category-number{margin:0}.category-tile:last-child>div{margin:0;gap:20px}.category-number{font-size:16px;margin-bottom:13px}.category-tile h3{font-size:14px}.category-tile>div{font-size:10px}.card-grid.three{grid-template-columns:1fr}.card-grid{gap:14px}.note-card{padding:22px}.note-card h3{font-size:20px;margin-bottom:10px}.card-meta{margin-bottom:13px}.note-card>p{font-size:13px;margin-bottom:20px}.featured-section{padding-bottom:34px}.home-bottom{grid-template-columns:1fr;gap:30px;padding-bottom:38px}.latest-row{padding:20px 0;gap:14px}.latest-row h3{font-size:18px}.latest-row>span:last-child{display:none}.latest-row p:not(.eyebrow){font-size:12px}.row-number{font-size:19px}.editor-aside{padding:25px;margin:0}.editor-aside h2 br{display:none}.editor-aside h2{font-size:24px}.editor-aside>p:not(.eyebrow){font-size:14px}.columns-section{padding:30px 0 40px}.contact-strip{padding:28px 0}.contact-strip>.wrap{display:block}.contact-strip h2{font-size:20px}.contact-strip p:not(.eyebrow){font-size:12px}.contact-strip .button{margin-top:22px;font-size:12px}.footer{padding:32px 0 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h1{font-size:30px;line-height:1.48;margin:13px 0 18px}.article-header .lead{font-size:16px;line-height:1.85}.byline{gap:8px 15px;font-size:10px;margin-top:22px}.reading-layout{display:block}.toc{position:static;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin-bottom:25px}.toc>p{margin-bottom:10px}.toc ol{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;margin:0}.toc li{margin:0;font-size:11px}.toc-category{font-size:11px;margin-top:14px;padding-top:10px}.prose{font-size:15px;line-height:1.95}.prose h2{font-size:23px;margin:35px 0 16px}.prose h3{font-size:19px}.prose th,.prose td{font-size:12px;padding:11px;min-width:92px}.key-box{padding:20px;margin-bottom:26px}.key-box ul{font-size:14px}.mistake-box{padding:20px}.mistake-box h2{font-size:20px;margin-top:0}.mistake-box ul{font-size:14px}.quiz{padding:18px}.editor-box{padding:20px;gap:14px}.editor-box .avatar{width:34px;height:34px;font-size:16px}.editor-box h2{font-size:19px;margin-top:0}.related-section{margin:38px 0}.author-hero{margin-top:20px;margin-bottom:35px}.author-hero h1{font-size:34px}.author-hero .lead{font-size:16px}.author-actions{flex-wrap:wrap}.author-principles{grid-template-columns:1fr;gap:28px;padding:30px 0}.trust-layout{grid-template-columns:1fr;gap:20px;margin:20px 0 45px}.trust-layout>header h1{font-size:30px;margin-bottom:13px}.trust-layout .prose .lead{font-size:17px}.trust-layout .prose h2:first-child{margin-top:20px}.contact-email{padding:19px}.contact-email>a{font-size:19px}.not-found{padding:60px 0 90px}.not-found h1{font-size:35px}.not-found .text-link{margin-top:25px}.interactive{padding:20px}.interactive h2{margin-top:5px}.admin-topbar{padding:0 15px}.admin-layout{display:block}.admin-sidebar{display:flex;overflow-x:auto;padding:0;white-space:nowrap}.admin-sidebar p{display:none}.admin-sidebar>a{padding:14px;font-size:12px}.admin-main{padding:20px 15px 40px}.admin-heading{align-items:flex-start}.admin-heading h1{font-size:24px}.admin-heading .button{font-size:12px}.admin-notice{padding:12px 15px;font-size:11px}.admin-stats{gap:10px}.admin-stat{padding:15px}.admin-stat strong{font-size:25px}.admin-stat span{font-size:10px}.admin-panel{padding:17px}.admin-settings{grid-template-columns:1fr}.admin-settings .full{grid-column:auto}.admin-login{margin:40px 18px;padding:25px}.admin-form-side{grid-template-columns:1fr 1fr;gap:15px}.admin-form-side label{min-width:0}.admin-form-side .full{grid-column:1/-1}.admin-category{grid-template-columns:1fr}.admin-category small{grid-column:auto}.admin-preview{padding:20px}.admin-preview .prose>h1{font-size:26px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}@media print{.header,.footer,.contact-strip,.toc,.related-section,.print-button,.breadcrumbs,.skip,.interactive{display:none!important}.wrap{max-width:none;padding:0}.article-header{margin:0 0 25px}.reading-layout{display:block}.prose{font-size:12pt}details>*{display:block}.prose a{color:inherit}.key-box,.mistake-box{break-inside:avoid}h2,h3{break-after:avoid}}
/* Book Club의 2단 정보 배치를 참고한 독립 구현. */
.header{height:auto}.header-inner{display:grid;grid-template-columns:1fr auto;gap:0;padding-top:27px}.header .brand{font-size:28px;padding:0 0 20px}.header .brand-mark{display:none}.header nav{grid-column:1/-1;grid-row:2;margin:0;border-top:1px solid #eee;gap:32px;justify-content:flex-start}.header nav a{font-size:14px;padding:16px 0}.search-link{grid-column:2;grid-row:1;border:0;padding-bottom:20px}.wrap{max-width:1140px}.blog-layout{display:grid;grid-template-columns:minmax(0,780px) 220px;gap:60px;padding:44px 0 60px}.blog-main{min-width:0}.blog-intro{padding:4px 0 34px}.blog-intro h1{font-size:30px;letter-spacing:-.045em;margin:0 0 15px}.blog-intro>p:not(.eyebrow){color:var(--muted);font-size:15px;line-height:1.9;margin-bottom:20px}.blog-intro .eyebrow{font-size:12px}.blog-sidebar{border-left:1px solid #eee;padding-left:28px;align-self:start;font-size:13px}.blog-sidebar section{padding-bottom:25px;margin-bottom:26px;border-bottom:1px solid #eee}.blog-sidebar section:last-child{border:0}.blog-sidebar h2{font-size:15px;font-weight:650;margin:0 0 15px;letter-spacing:-.02em}.blog-sidebar p{font-size:12px;line-height:1.9;color:var(--muted)}.blog-sidebar ul{list-style:none;padding:0;margin:8px 0 15px}.blog-sidebar li{padding:5px 0;margin:0;font-size:12px}.blog-sidebar li a,.sidebar-all{display:flex;justify-content:space-between;gap:10px}.blog-sidebar a span{color:#888;font-size:11px}.sidebar-owner{font-size:12px}.sidebar-owner span{margin-left:7px}.sidebar-recent li{padding:8px 0}.sidebar-recent time{display:block;color:#999;font-size:11px;margin-top:5px}.practice-promo{padding:25px 26px;background:#f5f7f5;border:1px solid #e4e9e5;display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:40px}.practice-promo .eyebrow{font-size:11px;margin-bottom:7px;display:block}.practice-promo h2{font-size:19px;margin-bottom:8px}.practice-promo p{font-size:12px;color:var(--muted);margin:0}.practice-promo .button{white-space:nowrap;font-size:13px;min-height:42px;padding:10px 16px}.blog-section{margin:0 0 43px}.blog-section .section-head{margin-bottom:6px}.blog-section .section-head h2{font-size:19px}.blog-section .section-head .eyebrow:empty{display:none}.blog-section .latest-row{padding:25px 0;border-top:0;border-bottom:1px solid #eee}.blog-section .latest-row h3{font-size:21px}.blog-section .latest-row p:not(.eyebrow){font-size:14px;line-height:1.8}.blog-section .card-grid{gap:18px;margin-top:20px}.blog-section .note-card{padding:18px;border-color:#e7e7e7}.blog-section .note-card h3{font-size:17px}.blog-section .card-meta span+span{display:none}.blog-section .card-bottom{font-size:10px}.blog-principles{border-top:1px solid #eee;padding-top:27px}.blog-principles h2{font-size:19px;margin-bottom:13px}.blog-principles p{font-size:13px;color:var(--muted);line-height:1.9}.blog-principles .small{margin-top:20px}.contact-strip{background:#fafafa}.blog-main>.breadcrumbs{padding:0 0 20px}.blog-main .page-heading{padding:0 0 32px}.blog-main .page-heading h1{font-size:30px}.blog-main .page-heading h1 br{display:none}.blog-main .page-heading>p:not(.eyebrow){font-size:14px}.blog-main>.page-cards{grid-template-columns:1fr;gap:0}.blog-main>.page-cards .note-card{border:0;border-bottom:1px solid #eee;padding:25px 0;background:white}.blog-main>.page-cards .note-card h3{font-size:21px}.blog-main>.page-cards .card-bottom{border:0;padding-top:0;justify-content:flex-start;gap:18px}.blog-main .category-index>section{grid-template-columns:1fr;gap:16px}.blog-main .category-index h2{font-size:23px}.blog-main .category-index .category-number{display:none}.article-header{margin-left:0;max-width:780px}.article-header h1{font-size:35px}.reading-layout{grid-template-columns:minmax(0,780px) 220px;gap:60px}.reading-layout>.prose{grid-column:1;grid-row:1}.reading-layout>.toc{grid-column:2;grid-row:1;border-top:0;border-left:1px solid #eee;padding:0 0 0 25px}.prose{font-size:17px}.prose h2{font-size:27px}.column-card h3{font-weight:600}.practice-heading{max-width:none;padding:14px 0 28px}.practice-heading h1{font-size:32px}.practice-heading>p:not(.eyebrow){font-size:15px}.practice-notice{padding:20px 23px;border-left:3px solid var(--green);background:#f5f7f5;margin-bottom:28px;font-size:14px}.practice-notice p{margin:7px 0 0;color:var(--muted);font-size:13px}.practice-controls{display:flex;flex-wrap:wrap;gap:16px;align-items:end}.practice-controls label{min-width:190px}.text-button{background:none;border:0;text-decoration:underline;text-underline-offset:4px;color:var(--muted);padding:12px 4px;font-size:12px}.practice-controls .button{font-size:12px;min-height:43px}.practice-controls+p{margin:17px 0}.practice-questions{max-width:820px}.practice-question{border:0;border-bottom:1px solid #ddd;padding:30px 0;margin:0 0 26px;min-width:0}.practice-question legend{float:left;width:100%;font-size:18px;line-height:1.8;font-weight:600;padding:0;margin:0 0 20px}.practice-question legend+.answer-options{clear:both}.question-meta{display:block;font-size:12px;line-height:1.5;font-weight:500;color:var(--muted);margin-bottom:12px}.answer-options{display:grid;gap:9px}.answer-options label{display:flex;gap:13px;align-items:flex-start;padding:14px 16px;border:1px solid #e4e6e4;font-size:14px;font-weight:400;cursor:pointer;line-height:1.8;border-radius:3px}.answer-options label:hover{background:#f8faf8}.answer-options label:has(input:checked){background:var(--tint);border-color:var(--green)}.answer-options input{width:17px;min-height:0;height:17px;margin:4px 0 0;flex:0 0 auto;accent-color:var(--green)}.answer-options span{display:flex;gap:12px}.answer-options b{font-weight:600;color:var(--muted)}.question-result{font-size:13px;font-weight:600;margin:16px 0 0;color:var(--green)}.question-result:empty{display:none}.question-review{margin-top:18px;font-size:14px}.question-review summary{cursor:pointer;color:var(--green)}.answer-explanation{padding:22px;background:#f7f8f7;margin-top:14px;line-height:1.9}.answer-explanation ol{color:var(--muted);font-size:13px;line-height:1.9}.answer-explanation a{text-decoration:underline;text-underline-offset:3px;color:var(--green)}.practice-active .question-review{display:none}.practice-active .reviewed .question-review{display:block}.practice-submit{display:flex;align-items:center;gap:25px;padding:20px 0 35px}.practice-submit span{font-size:13px;color:var(--muted)}.practice-score{padding:25px;border:1px solid var(--green);margin:0 0 50px;max-width:820px}.practice-score h2{font-size:23px;margin-bottom:14px}.practice-score p{font-size:14px}.practice-score ul{font-size:13px}.article-figure{margin:32px 0}.article-figure .figure-scroll{overflow-x:auto;border:1px solid #e8ece9;border-radius:5px}.article-figure img{display:block;width:100%;height:auto;min-width:560px}.article-figure figcaption{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.8}.article-figure figcaption a{white-space:nowrap}.figure-scroll:focus-visible{outline:3px solid #b57b37;outline-offset:2px}
@media(max-width:900px){.blog-layout{grid-template-columns:minmax(0,1fr) 190px;gap:30px}.blog-sidebar{padding-left:20px}.blog-section .card-grid.three{grid-template-columns:1fr}.reading-layout{grid-template-columns:minmax(0,1fr) 180px;gap:30px}.practice-promo{display:block}.practice-promo .button{margin-top:18px}}
@media(max-width:760px){.header-inner{padding-top:22px}.header .brand{font-size:25px;padding-bottom:17px}.header nav{width:100%;overflow-x:auto;flex-wrap:nowrap;gap:25px;padding:0;white-space:nowrap;justify-content:flex-start}.header nav a{font-size:12px;padding:14px 0}.search-link{padding-bottom:17px}.blog-layout{display:block;padding:28px 0 35px}.blog-sidebar{border-left:0;border-top:1px solid #ddd;padding:28px 0 0;margin-top:35px;display:grid;grid-template-columns:1fr 1fr;gap:24px}.blog-sidebar section{margin:0;padding-bottom:20px}.blog-sidebar section:first-child{grid-column:1/-1}.blog-sidebar section:first-child p br{display:none}.blog-sidebar section:nth-child(4){display:none}.blog-intro{padding-bottom:25px}.blog-intro h1{font-size:25px}.blog-intro>p:not(.eyebrow){font-size:14px}.practice-promo{padding:22px;margin-bottom:30px}.practice-promo h2{font-size:18px}.blog-section{margin-bottom:30px}.blog-section .latest-row h3{font-size:20px}.blog-main .page-heading h1{font-size:27px}.blog-main .category-tabs{gap:6px}.article-header{margin:15px 0 25px}.article-header h1{font-size:29px}.reading-layout{display:block}.reading-layout>.toc{border-left:0;border-top:1px solid #eee;padding:17px 0;margin-bottom:25px}.prose{font-size:16px}.prose h2{font-size:24px}.practice-heading h1{font-size:27px}.practice-heading>p:not(.eyebrow){font-size:14px}.practice-controls{gap:9px}.practice-controls label{width:100%}.practice-controls .button{font-size:12px}.practice-question legend{font-size:16px}.answer-options label{padding:13px 12px;font-size:14px;gap:10px}.answer-options span{gap:9px}.answer-explanation{padding:18px}.practice-submit{gap:12px;align-items:start;flex-direction:column}.practice-score{padding:20px}.article-figure img{max-width:none;width:560px}}
@media print{.blog-sidebar,.practice-controls,.practice-submit{display:none!important}.blog-layout{display:block}.practice-active .question-review{display:block}.practice-question{break-inside:avoid}}
.figure-hint{display:none}@media(max-width:760px){.figure-hint{display:block;margin-bottom:5px;color:var(--green)}}