@font-face{font-family:Pretendard;font-style:normal;font-weight:400;font-display:swap;src:url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-Regular.woff2)format("woff2"),url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-Regular.woff)format("woff")}@font-face{font-family:Pretendard;font-style:normal;font-weight:500;font-display:swap;src:url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-Medium.woff2)format("woff2"),url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-Medium.woff)format("woff")}@font-face{font-family:Pretendard;font-style:normal;font-weight:600;font-display:swap;src:url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-SemiBold.woff2)format("woff2"),url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-SemiBold.woff)format("woff")}@font-face{font-family:Pretendard;font-style:normal;font-weight:700;font-display:swap;src:url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-Bold.woff2)format("woff2"),url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-Bold.woff)format("woff")}@font-face{font-family:Pretendard;font-style:normal;font-weight:800;font-display:swap;src:url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-ExtraBold.woff2)format("woff2"),url(https://frontend-assets.mathflat.com/font/pretendard/Pretendard-ExtraBold.woff)format("woff")}:root{--bg:#fff;--bg-subtle:#f7f8fa;--bg-muted:#f2f4f6;--line:#eceef1;--line-strong:#e1e4e8;--ink:#191f28;--ink-2:#4e5968;--ink-3:#8b95a1;--ink-4:#b0b8c1;--brand:#3182f6;--brand-strong:#2272eb;--brand-tint:#eaf2ff;--teacher:#3182f6;--teacher-tint:#eaf2ff;--student:#12b886;--student-tint:#e6f8f1;--attendance:#ff6b3d;--attendance-tint:#fff0eb;--tip:#f59f00;--tip-tint:#fff8e6;--tip-line:#ffe8a8;--r-sm:10px;--r-md:16px;--r-lg:20px;--r-xl:28px;--shadow-sm:0 1px 2px #0000000a, 0 2px 8px #1118270a;--shadow-md:0 4px 16px #1118270f, 0 1px 3px #1118270a;--shadow-lg:0 12px 36px #1118271a;--maxw:1080px;--header-h:64px;--ease:cubic-bezier(.22,.61,.36,1)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 24px)}body{color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;letter-spacing:-.01em;margin:0;font-family:Pretendard,-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Segoe UI,Roboto,Noto Sans KR,sans-serif;font-size:16px;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{cursor:pointer;font-family:inherit}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}.site-header{z-index:50;height:var(--header-h);-webkit-backdrop-filter:saturate(180%)blur(14px);border-bottom:1px solid var(--line);background:#ffffffd1;position:sticky;top:0}.site-header .inner{max-width:var(--maxw);align-items:center;gap:16px;height:100%;margin:0 auto;padding:0 24px;display:flex}.brand{align-items:center;gap:9px;font-size:17px;font-weight:700;display:flex}.brand .logo{color:#fff;background:linear-gradient(135deg,#3182f6,#4dabf7);border-radius:8px;place-items:center;width:28px;height:28px;font-size:15px;font-weight:800;display:grid;box-shadow:0 2px 8px #3182f659}.brand .sub{color:var(--ink-3);font-size:14px;font-weight:600}.brand .logo{display:none}.header-spacer{flex:1}.nav-links{gap:4px;display:flex}.nav-links a{color:var(--ink-2);border-radius:10px;padding:8px 13px;font-size:14.5px;font-weight:600;transition:background .15s,color .15s}.nav-links a:hover{background:var(--bg-muted);color:var(--ink)}.nav-links a.active{color:var(--brand)}.searchbox{background:var(--bg-muted);border:1px solid #0000;border-radius:12px;align-items:center;gap:7px;min-width:220px;padding:8px 13px;transition:background .15s,border-color .15s,box-shadow .15s;display:flex}.searchbox:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-tint);background:#fff}.searchbox svg{color:var(--ink-3);flex:none}.searchbox input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;font-size:14.5px}.searchbox input::placeholder{color:var(--ink-4)}.search-pop{top:calc(var(--header-h) - 6px);z-index:200;border:1px solid var(--line);width:420px;max-width:calc(100vw - 48px);box-shadow:var(--shadow-lg);overscroll-behavior:contain;background:#fff;border-radius:16px;max-height:min(58vh,440px);padding:8px;display:none;position:absolute;right:24px;overflow-y:auto}.search-pop.open{display:block}.search-pop a{border-radius:11px;flex-direction:column;gap:2px;padding:11px 13px;display:flex}.search-pop a:hover{background:var(--bg-muted)}.search-pop .r-title{font-size:14.5px;font-weight:600}.search-pop .r-path{color:var(--ink-3);font-size:12.5px}.search-pop .r-empty{color:var(--ink-3);padding:18px 13px;font-size:14px}.search-pop .r-snip{color:var(--ink-2);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-top:3px;font-size:12.5px;line-height:1.5;display:-webkit-box;overflow:hidden}.search-pop a.r-soon{cursor:default;opacity:.55}.search-pop a.r-soon:hover{background:0 0}.search-pop mark{background:var(--brand-tint);color:var(--brand);border-radius:4px;padding:0 1px}.hero{text-align:center;padding:76px 0 36px}.hero .eyebrow{color:var(--brand);background:var(--brand-tint);border-radius:999px;margin-bottom:20px;padding:6px 13px;font-size:13.5px;font-weight:700;display:inline-block}.hero h1{letter-spacing:-.03em;margin:0 0 16px;font-size:42px;font-weight:800;line-height:1.25}.hero p{color:var(--ink-2);max-width:540px;margin:0 auto;font-size:18px}.hero-search-wrap{text-align:left;max-width:560px;margin:32px auto 0;position:relative}.hero-search{border:1.5px solid var(--line-strong);box-shadow:var(--shadow-sm);background:#fff;border-radius:16px;align-items:center;gap:10px;margin:0;padding:15px 20px;transition:border-color .15s,box-shadow .15s;display:flex}.search-pop.hero-pop{width:auto;max-width:none;top:calc(100% + 10px);left:0;right:0}.hero-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 5px var(--brand-tint)}.hero-search svg{color:var(--ink-3);flex:none}.hero-search input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;font-size:16.5px}.hero-search input::placeholder{color:var(--ink-4)}.section-label{color:var(--ink-3);margin:0 0 16px;font-size:14px;font-weight:700}.services{grid-template-columns:repeat(3,1fr);gap:18px;padding:28px 0 8px;display:grid}.svc-card{border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s;background:#fff;flex-direction:column;padding:28px 26px;display:flex;position:relative;overflow:hidden}.svc-card:after{content:"";background:var(--accent,var(--brand));transform-origin:0;height:4px;transition:transform .25s var(--ease);position:absolute;inset:0 0 auto;transform:scaleX(0)}.svc-card:hover{box-shadow:var(--shadow-lg);border-color:#0000;transform:translateY(-4px)}.svc-card:hover:after{transform:scaleX(1)}.svc-icon{background:var(--accent-tint,var(--brand-tint));border-radius:16px;place-items:center;width:56px;height:56px;margin-bottom:18px;font-size:28px;display:grid}.svc-card h3{letter-spacing:-.02em;margin:0 0 7px;font-size:20px;font-weight:800}.svc-card .svc-desc{color:var(--ink-2);flex:1;margin:0 0 18px;font-size:14.5px;line-height:1.55}.svc-card .svc-meta{color:var(--accent,var(--brand));align-items:center;gap:6px;font-size:13.5px;font-weight:700;display:flex}.svc-card .svc-meta .arrow{transition:transform .2s var(--ease);align-items:center;display:inline-flex}.svc-card:hover .svc-meta .arrow{transform:translate(3px)}.quick-row{grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px;display:grid}.quick-card{background:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--r-md);align-items:center;gap:14px;padding:18px 20px;transition:background .15s,transform .15s;display:flex}a.quick-card{color:inherit;text-decoration:none}.quick-card:hover{box-shadow:var(--shadow-sm);background:#fff;transform:translateY(-2px)}.quick-card .q-emoji{font-size:22px}.quick-card .q-text b{font-size:15px;font-weight:700;display:block}.quick-card .q-text span{color:var(--ink-3);font-size:13px}.support{background:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--r-lg);justify-content:space-between;align-items:center;gap:24px;margin:56px 0;padding:28px 32px;display:flex}.support .s-left b{margin-bottom:4px;font-size:17px;font-weight:800;display:block}.support .s-left span{color:var(--ink-2);font-size:14.5px}.support .s-actions{flex:none;gap:10px;display:flex}.btn{border:1px solid var(--line-strong);color:var(--ink);background:#fff;border-radius:12px;align-items:center;gap:7px;padding:12px 20px;font-size:14.5px;font-weight:700;transition:transform .12s,box-shadow .15s,background .15s;display:inline-flex}.btn:hover{box-shadow:var(--shadow-sm);transform:translateY(-1px)}.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}.btn.primary:hover{background:var(--brand-strong)}.site-footer{border-top:1px solid var(--line);color:var(--ink-3);margin-top:40px;padding:36px 0;font-size:13.5px}.site-footer .inner{max-width:var(--maxw);flex-wrap:wrap;justify-content:space-between;gap:16px;margin:0 auto;padding:0 24px;display:flex}.page-head{padding:44px 0 12px}.breadcrumb{color:var(--ink-3);flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:18px;font-size:13.5px;display:flex}.breadcrumb a:hover{color:var(--ink-2)}.breadcrumb .sep{color:var(--ink-4)}.breadcrumb .cur{color:var(--ink-2);font-weight:600}.page-title-row{align-items:center;gap:16px;display:flex}.page-title-row .p-icon{background:var(--accent-tint,var(--brand-tint));border-radius:18px;flex:none;place-items:center;width:60px;height:60px;font-size:30px;display:grid}.page-head h1{letter-spacing:-.03em;margin:0;font-size:32px;font-weight:800}.page-head .p-desc{color:var(--ink-2);margin:6px 0 0;font-size:15.5px}.banner{border-radius:var(--r-lg);background:linear-gradient(120deg, var(--accent-tint), #fff);border:1px solid var(--line);color:var(--ink-2);align-items:center;gap:16px;margin:28px 0 8px;padding:40px;display:flex}.banner .b-emoji{font-size:40px}.banner b{color:var(--ink)}.svc-notice{border-radius:var(--r-lg);border:1px solid var(--line);background:#fff;flex-wrap:wrap;align-items:center;gap:16px;margin:12px 0 4px;padding:20px 24px;display:flex;box-shadow:0 1px 2px #1018280a}.svc-notice .n-emoji{font-size:30px;line-height:1}.svc-notice .n-body{flex-direction:column;flex:1;gap:3px;min-width:220px;display:flex}.svc-notice .n-body b{color:var(--ink);letter-spacing:-.01em;font-size:16px;font-weight:800}.svc-notice .n-body span{color:var(--ink-3);white-space:pre-line;font-size:13.5px}.svc-notice .n-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.svc-notice .n-dl{background:var(--accent);color:#fff;white-space:nowrap;border-radius:10px;align-items:center;gap:7px;padding:10px 16px;font-size:14px;font-weight:700;text-decoration:none;display:inline-flex}.svc-notice .n-dl:hover{filter:brightness(.95)}.svc-notice .n-more{color:var(--accent);white-space:nowrap;align-items:center;gap:3px;font-size:13.5px;font-weight:700;text-decoration:none;display:inline-flex}.svc-notice .n-more:hover{text-decoration:underline}@media (max-width:640px){.svc-notice{padding:16px 18px}.svc-notice .n-actions{width:100%}.svc-notice .n-dl{flex:1;justify-content:center}}.group{margin-top:44px}.group>h2{letter-spacing:-.02em;align-items:center;gap:9px;margin:0 0 4px;font-size:22px;font-weight:800;display:flex}.group>.g-sub{color:var(--ink-3);margin:0 0 20px;font-size:14px}.group .accent-dot{background:var(--accent,var(--brand));border-radius:3px;width:9px;height:9px}.cat-grid{grid-template-columns:repeat(2,1fr);gap:18px;display:grid}.cat{border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-sm);background:#fff;padding:22px 22px 12px}.cat h3{align-items:center;gap:8px;margin:0 0 12px;font-size:16px;font-weight:700;display:flex}.cat ul{margin:0;padding:0;list-style:none}.cat li{margin:0}.cat li a,.cat li .soon{border-radius:11px;justify-content:space-between;align-items:center;gap:10px;margin:0 -12px;padding:11px 12px;font-size:14.5px;transition:background .14s;display:flex}.cat li a{color:var(--ink);font-weight:500}.cat li a:hover{background:var(--bg-muted)}.cat li a .go{color:var(--ink-4);transition:transform .15s,color .15s}.cat li a:hover .go{color:var(--accent,var(--brand));transform:translate(2px)}.cat li .soon{color:var(--ink-4);cursor:default}.badge-soon{color:var(--ink-3);background:var(--bg-muted);border-radius:999px;padding:3px 8px;font-size:11px;font-weight:700}.badge-new{color:var(--brand);background:var(--brand-tint);border-radius:999px;padding:3px 8px;font-size:11px;font-weight:800}.article-layout{grid-template-columns:1fr 240px;align-items:start;gap:56px;padding-top:36px;display:grid}.article{min-width:0;max-width:720px}.article-toc{top:calc(var(--header-h) + 28px);position:sticky}.article-toc .toc-title{color:var(--ink-3);text-transform:uppercase;letter-spacing:.04em;margin-bottom:12px;font-size:12.5px;font-weight:700}.article-toc ul{border-left:2px solid var(--line);margin:0;padding:0;list-style:none}.article-toc li a{color:var(--ink-3);border-left:2px solid #0000;margin-left:-2px;padding:6px 0 6px 14px;font-size:13.5px;line-height:1.4;transition:color .14s,border-color .14s;display:block}.article-toc li.sub a{padding-left:26px;font-size:13px}.article-toc li a:hover{color:var(--ink)}.article-toc li a.active{color:var(--brand);border-left-color:var(--brand);font-weight:600}.article h1{letter-spacing:-.03em;margin:6px 0 14px;font-size:34px;font-weight:800;line-height:1.3}.article .lead{color:var(--ink-2);margin:0 0 28px;font-size:17px;line-height:1.6}.article h2{letter-spacing:-.02em;scroll-margin-top:calc(var(--header-h) + 20px);flex-wrap:wrap;align-items:center;gap:10px;margin:52px 0 18px;padding-top:8px;font-size:23px;font-weight:800;display:flex}.article h2 .h2-chip{color:var(--brand);background:var(--brand-tint);border-radius:8px;flex-shrink:0;padding:4px 11px;font-size:13px;font-weight:700;display:inline-block}.article h2 .h2-chip+br{display:none}.article h3{letter-spacing:-.01em;scroll-margin-top:calc(var(--header-h) + 20px);margin:36px 0 14px;font-size:18px;font-weight:700}.article h4{color:var(--ink-2);margin:24px 0 10px;font-size:15.5px;font-weight:700}.article p{color:var(--ink);margin:0 0 16px}.article hr{border:0;border-top:1px solid var(--line);margin:40px 0}.article code{background:var(--bg-muted);color:#d6336c;border-radius:6px;padding:2px 7px;font-family:SF Mono,ui-monospace,Menlo,monospace;font-size:.9em;font-weight:600}.article a.inline{color:var(--brand);text-underline-offset:3px;font-weight:600;-webkit-text-decoration:underline #3182f68c;text-decoration:underline #3182f68c;text-decoration-thickness:1.5px}.article a.inline:hover{-webkit-text-decoration-color:var(--brand);text-decoration-color:var(--brand)}.article mark.search-hit{color:inherit;background:#fff3bf;border-radius:3px;padding:0 2px;box-shadow:0 0 0 1px #ffe8a8}.steps{counter-reset:step;margin:0 0 20px;padding:0;list-style:none}.steps>li{counter-increment:step;border-left:2px solid var(--line);margin:0 0 0 14px;padding:0 0 18px 44px;position:relative}.steps>li:last-child{border-left-color:#0000;padding-bottom:0}.steps>li:before{content:counter(step);background:var(--brand);color:#fff;border-radius:50%;place-items:center;width:28px;height:28px;font-size:13px;font-weight:700;display:grid;position:absolute;top:-2px;left:-15px;box-shadow:0 2px 6px #3182f64d}.steps>li .s-body{padding-top:1px}.steps ul{color:var(--ink-2);margin:8px 0 0;padding-left:18px;font-size:14.5px}.steps ul li{margin:3px 0}.article ol:not(.steps),.article ul:not(.steps):not(.toc-list){color:var(--ink);margin:0 0 16px;padding-left:22px}.article ol:not(.steps) li,.article ul:not(.steps) li{margin:5px 0}.shot{border:1.5px dashed var(--line-strong);border-radius:var(--r-md);background:linear-gradient(var(--bg-subtle), var(--bg-subtle)) padding-box;text-align:center;color:var(--ink-3);flex-direction:column;justify-content:center;align-items:center;gap:8px;margin:16px 0 22px;padding:38px 24px;display:flex}.shot .shot-ico{background:var(--bg-muted);border-radius:12px;place-items:center;width:44px;height:44px;font-size:22px;display:grid}.shot .shot-cap{color:var(--ink-2);font-size:13.5px;font-weight:600}.shot .shot-tag{color:var(--ink-4);letter-spacing:.03em;font-size:11.5px;font-weight:600}.shot.dual{background:0 0;border:0;grid-template-columns:1fr 1fr;gap:16px;padding:0;display:grid}.shot.dual>div{border:1.5px dashed var(--line-strong);border-radius:var(--r-md);background:var(--bg-subtle);flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:30px 18px;display:flex}.shot.has-img{background:0 0;border:0;padding:0;display:block}.shot.dual>div.has-img{background:0 0;border:0;padding:0}.shot-img{border:1px solid var(--line);border-radius:var(--r-md);width:100%;box-shadow:var(--shadow-sm);display:block}.shot.has-img .shot-cap,.shot.dual>div.has-img .shot-cap{margin-top:9px}.video-embed{aspect-ratio:16/9;border-radius:var(--r-md);width:100%;box-shadow:var(--shadow-sm);background:#000;margin:22px 0 10px;position:relative;overflow:hidden}.video-embed iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.video-embed+.shot-cap{color:var(--ink-2);margin:-2px 0 18px;font-size:13.5px;font-weight:600;display:block}.callout{border-radius:var(--r-md);gap:13px;margin:20px 0;padding:18px 20px;font-size:14.5px;line-height:1.6;display:flex}.callout .c-ico{flex:none;font-size:19px;line-height:1.4}.callout .c-body{min-width:0}.callout .c-body b{font-weight:700;display:inline}.callout .c-body p{margin:0 0 6px}.callout .c-body p:last-child{margin:0}.callout.tip{background:var(--tip-tint);border:1px solid var(--tip-line)}.callout.tip b{color:#b5760a}.callout.note{background:var(--bg-subtle);border:1px solid var(--line)}.callout.video{background:#f3f0ff;border:1px solid #e0d4ff}.callout.video a{color:#7048e8;font-weight:700}.toggle{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;margin:10px 0;transition:box-shadow .15s,border-color .15s;overflow:hidden}.toggle[open]{box-shadow:var(--shadow-sm);border-color:var(--line-strong)}.toggle summary{cursor:pointer;color:var(--ink);justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;font-size:15px;font-weight:700;list-style:none;display:flex}.toggle summary::-webkit-details-marker{display:none}.toggle summary .t-chevron{color:var(--ink-4);transition:transform .2s var(--ease);flex:none}.toggle[open] summary .t-chevron{transform:rotate(180deg)}.toggle summary:hover{background:var(--bg-subtle)}.toggle .t-content{color:var(--ink-2);padding:0 20px 18px;font-size:14.5px;line-height:1.65}.steps .s-embed{margin:10px 0 4px}.steps .s-embed>:first-child{margin-top:0}.steps .s-embed>:last-child{margin-bottom:0}.refbox{background:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--r-md);justify-content:space-between;align-items:center;gap:16px;margin:18px 0;padding:18px 22px;display:flex}.refbox .r-text{color:var(--ink-2);font-size:14.5px}.refbox .r-text b{color:var(--ink)}.refbox a{color:var(--brand);flex:none;align-items:center;gap:6px;font-size:14px;font-weight:700;display:inline-flex}.article-nav{grid-template-columns:1fr 1fr;gap:14px;margin:48px 0 0;display:grid}.article-nav a{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;padding:18px 20px;transition:background .15s,transform .15s,box-shadow .15s}.article-nav a:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}.article-nav .dir{color:var(--ink-3);margin-bottom:4px;font-size:12.5px;font-weight:600}.article-nav .ttl{font-size:15px;font-weight:700}.article-nav a.next{text-align:right}.to-top{background:var(--bg-subtle);border:1px solid var(--line);color:var(--ink-2);border-radius:12px;align-items:center;gap:7px;margin:36px 0 0;padding:12px 18px;font-size:14px;font-weight:600;display:inline-flex}.to-top:hover{background:var(--bg-muted)}.faq-search{border:1px solid var(--line-strong);box-shadow:var(--shadow-sm);background:#fff;border-radius:14px;align-items:center;gap:10px;margin:26px 0 16px;padding:15px 18px;transition:border-color .15s,box-shadow .15s;display:flex}.faq-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 5px var(--brand-tint)}.faq-search svg{color:var(--ink-3);flex:none}.faq-search input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;font-size:16px}.faq-search input::placeholder{color:var(--ink-4)}.faq-tabs{flex-wrap:wrap;gap:8px;margin-bottom:22px;display:flex}.faq-tabs .tab{border:1px solid var(--line);color:var(--ink-2);transition:all .15s var(--ease);background:#fff;border-radius:999px;align-items:center;gap:6px;padding:9px 15px;font-size:14px;font-weight:600;display:inline-flex}.faq-tabs .tab:hover{background:var(--bg-muted);color:var(--ink)}.faq-tabs .tab .count{color:var(--ink-4);font-size:12.5px;font-weight:700}.faq-tabs .tab[aria-selected=true]{background:var(--brand);border-color:var(--brand);color:#fff}.faq-tabs .tab[aria-selected=true] .count{color:#ffffffb8}.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;margin:10px 0;transition:box-shadow .15s,border-color .15s}.faq-item[open]{box-shadow:var(--shadow-sm);border-color:var(--line-strong)}.faq-q{cursor:pointer;color:var(--ink);border-radius:var(--r-md);align-items:flex-start;gap:11px;padding:17px 20px;font-size:15.5px;font-weight:700;list-style:none;display:flex}.faq-q::-webkit-details-marker{display:none}.faq-q:hover{background:var(--bg-subtle)}.faq-q .qmark{color:var(--brand);flex:none;font-weight:800}.faq-q .qtext{flex:1;line-height:1.5}.faq-q .t-chevron{color:var(--ink-4);transition:transform .2s var(--ease);flex:none;margin-top:1px}.faq-item[open] .faq-q .t-chevron{transform:rotate(180deg)}.faq-q mark{background:var(--brand-tint);color:var(--brand);border-radius:4px;padding:0 2px}.faq-a{border-top:1px solid var(--line);gap:11px;padding:18px 20px 20px;display:flex}.faq-a .amark{color:var(--ink-4);flex:none;font-size:15.5px;font-weight:800}.faq-a .abody{min-width:0;color:var(--ink-2);word-break:break-word;flex:1;font-size:15.5px;line-height:1.75}.faq-a .abody p{margin:0 0 12px}.faq-a .abody p:last-child{margin:0}.faq-a .abody a{color:var(--brand);text-underline-offset:2px;word-break:break-all;font-weight:600;text-decoration:underline}.faq-a .abody strong{color:var(--ink)}.faq-a .abody ul,.faq-a .abody ol{margin:10px 0;padding-left:20px}.faq-a .abody li{margin:4px 0}.faq-a .abody img{border:1px solid var(--line);border-radius:12px;margin:10px 0}.faq-state{border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg-subtle);text-align:center;flex-direction:column;gap:6px;padding:44px 24px;display:flex}.faq-state[hidden]{display:none}.faq-state b{font-size:15.5px;font-weight:700}.faq-state span{color:var(--ink-3);font-size:14px}.faq-skeleton{flex-direction:column;gap:10px;display:flex}.faq-skeleton i{border-radius:var(--r-md);background:var(--bg-muted);height:56px;animation:1.3s ease-in-out infinite faq-pulse}.faq-skeleton i:nth-child(2){animation-delay:.1s}.faq-skeleton i:nth-child(3){animation-delay:.2s}.faq-skeleton i:nth-child(4){animation-delay:.3s}.faq-skeleton i:nth-child(5){animation-delay:.4s}@keyframes faq-pulse{0%,to{opacity:1}50%{opacity:.5}}.faq-live{color:var(--ink-3);align-items:center;gap:7px;margin:20px 0 0;font-size:13px;display:flex}.faq-live .dot{background:var(--student);border-radius:50%;flex:none;width:6px;height:6px}@media (max-width:900px){.services,.cat-grid,.quick-row,.article-layout{grid-template-columns:1fr}.article-toc,.nav-links{display:none}.hero h1{font-size:32px}.support{flex-direction:column;align-items:flex-start}.article-nav{grid-template-columns:1fr}}@media (max-width:560px){.searchbox{width:40px;min-width:0;padding:8px}.searchbox input{display:none}.shot.dual{grid-template-columns:1fr}}