:root{--ink:#3d405b;--ink-deep:#2f314b;--primary:#a84f3b;--sage:#47745f;--paper:#fafaf9;--paper-deep:#f1eeea;--line:#dedbd6;--muted:#6e6b68;--faint:#6f6b67;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR","Apple SD Gothic Neo",sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:#1c1917;font-family:var(--sans);-webkit-font-smoothing:antialiased;margin:0}a{color:inherit;text-decoration:none}button{font:inherit}.shell{width:min(1172px,100% - 48px);margin-inline:auto}.flow-header{border-bottom:1px solid var(--line);grid-template-columns:1fr auto 1fr;align-items:center;min-height:78px;display:grid}.mark{width:max-content;color:var(--ink);letter-spacing:-.04em;align-items:center;gap:9px;font-size:16px;font-weight:750;display:inline-flex}.mark img{border-radius:8px;display:block}.flow-nav{color:var(--muted);gap:22px;font-size:12px;font-weight:650;display:flex}.flow-nav a:hover,.source-link:hover{color:var(--primary)}.header-right{justify-self:end;align-items:center;gap:12px;display:flex}.locale-switch{color:var(--muted);font:700 10px var(--mono);align-items:center;gap:7px;display:flex}.locale-switch button,.locale-prompt button{border:1px solid var(--line);cursor:pointer;background:#e8e5e1;border-radius:20px;width:34px;height:20px;padding:0;position:relative}.locale-switch button i,.locale-prompt button i{background:#fff;border-radius:50%;width:14px;height:14px;transition:transform .18s;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #0000002e}.locale-switch button[aria-checked=true],.locale-prompt button[aria-checked=true]{border-color:var(--ink);background:var(--ink)}.locale-switch button[aria-checked=true] i,.locale-prompt button[aria-checked=true] i{transform:translate(14px)}.header-install{color:#fff;background:var(--ink);border-radius:6px;padding:11px 13px;font-size:11px;font-weight:750}.locale-prompt{color:#315d4a;background:#f2faf5;border:1px solid #d9e6df;border-radius:7px;justify-content:space-between;align-items:center;gap:18px;margin-top:14px;padding:11px 14px;font-size:12px;display:flex}.locale-prompt p{margin:0;line-height:1.5}.locale-prompt button{color:#315d4a;width:auto;height:30px;font:700 11px var(--sans);background:#fff;border-radius:15px;flex:none;align-items:center;gap:7px;padding:0 10px 0 7px;display:inline-flex}.locale-prompt button i{top:7px}.locale-prompt button[aria-checked=true] i{transform:translate(14px)}.locale-prompt button span{white-space:nowrap;margin-left:18px}.opening{grid-template-columns:118px minmax(0,1fr) 160px;gap:34px;padding-block:82px 96px;display:grid}.opening-index,.finish-line{color:var(--primary);font:700 11px var(--mono);flex-direction:column;align-items:flex-start;gap:12px;display:flex}.opening-index i,.finish-line i{background:var(--primary);width:1px;height:58px}.opening-index small,.finish-line small{max-width:10ch;color:var(--muted);font:10px/1.45 var(--mono);text-transform:uppercase}.opening-copy{max-width:790px}.opening-copy h1{max-width:13.5ch;color:var(--ink);letter-spacing:-.085em;text-wrap:balance;margin:0;font-size:clamp(3.5rem,6.7vw,6.45rem);line-height:.95}.opening-copy p{max-width:42rem;color:var(--muted);margin:32px 0 0;font-size:17px;line-height:1.72}.opening-copy .version-notice{border-left:3px solid var(--primary);color:#4f423e;background:#f7ece8;max-width:46rem;margin-top:20px;padding:13px 15px;font-size:13px;line-height:1.58}.version-notice strong{color:#743425;margin-right:8px}.anchor-link{border-bottom:1px solid var(--ink);color:var(--ink);align-items:center;gap:9px;margin-top:33px;padding-bottom:4px;font-size:13px;font-weight:750;display:inline-flex}.anchor-link span{color:var(--primary);font-size:18px;line-height:10px}.opening-meta{color:var(--muted);font:10px var(--mono);flex-direction:column;align-self:end;align-items:flex-start;gap:8px;padding-bottom:16px;display:flex}.opening-meta span{border:1px solid var(--line);background:#fff;border-radius:4px;padding:7px 8px}.journey{border-top:1px solid var(--line);background:var(--paper-deep)}.journey-header{grid-template-columns:minmax(0,1fr) 330px;align-items:end;gap:72px;padding-top:104px;display:grid}.section-kicker{color:var(--primary);font:700 10px var(--mono);letter-spacing:.09em;text-transform:uppercase;margin:0}.journey-header h2,.context-copy h2,.finish-copy h2{max-width:12ch;color:var(--ink);letter-spacing:-.075em;margin:22px 0 0;font-size:clamp(2.7rem,5vw,5rem);line-height:.99}.journey-header>p{color:var(--muted);margin:0 0 5px;font-size:15px;line-height:1.72}.journey-stage{border:1px solid var(--line);background:var(--paper);border-bottom:0;grid-template-columns:177px minmax(0,1fr);gap:0;margin-top:64px;display:grid}.journey-rail{border-right:1px solid var(--line);background:#f7f5f2;flex-direction:column;padding:29px 23px;display:flex}.rail-item{min-height:155px;color:var(--faint);flex-direction:column;gap:8px;display:flex;position:relative}.rail-item:not(:last-child):after{content:"";background:var(--line);width:1px;height:78px;position:absolute;top:32px;left:4px}.rail-item span{font:700 11px var(--mono)}.rail-item p{margin:0;font-size:12px;line-height:1.4}.rail-item.active:after{background:var(--primary)}.course-demo{background:#fff;overflow:hidden}.course-topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-height:52px;padding:0 17px;display:flex}.course-brand{align-items:center;gap:8px;min-width:0;font-size:11px;display:flex}.course-brand img{border-radius:5px}.course-brand strong{color:var(--ink)}.course-brand span{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.demo-state{color:var(--muted);font:10px var(--mono);align-items:center;gap:7px;display:flex}.demo-state i{background:var(--sage);border-radius:50%;width:6px;height:6px}.course-layout{grid-template-columns:174px minmax(0,1fr);min-height:495px;display:grid}.course-sidebar{border-right:1px solid var(--line);background:#fbfaf8;padding:29px 18px}.course-sidebar small{color:var(--muted);font:10px var(--mono)}.course-sidebar strong{color:var(--ink);letter-spacing:-.035em;margin-top:7px;font-size:14px;display:block}.course-sidebar ol{color:var(--faint);font:10px var(--mono);gap:14px;margin:32px 0 0;padding:0;list-style:none;display:grid}.course-sidebar li{gap:8px;display:flex}.course-sidebar li span{color:var(--muted);font:12px var(--sans)}.course-sidebar .selected{color:var(--primary);font-weight:700}.course-sidebar .selected span{color:var(--ink);font-weight:700}.course-sidebar .done{color:var(--sage)}.lesson-panel{padding:31px 9.5% 28px;position:relative}.lesson-bar{color:var(--muted);font:10px var(--mono);justify-content:space-between;align-items:center;gap:16px;display:flex}.language-switch{flex-wrap:wrap;justify-content:flex-end;gap:5px;display:flex}.language-switch button{border:1px solid var(--line);color:var(--muted);font:700 10px var(--mono);cursor:pointer;background:#fff;border-radius:4px;padding:6px 7px;transition:background .18s,color .18s,border-color .18s}.language-switch button[aria-pressed=true]{border-color:var(--ink);color:#fff;background:var(--ink)}.lesson-overline{color:var(--primary);font:700 10px var(--mono);letter-spacing:.08em;text-transform:uppercase;margin:67px 0 0}.lesson-panel h3{max-width:15ch;color:var(--ink);letter-spacing:-.055em;margin:12px 0 0;font-size:clamp(1.8rem,3vw,2.65rem);line-height:1.08}.lesson-body{color:#484541;max-width:39rem;margin:25px 0 0;font-size:15px;line-height:1.78}.term-note{border-left:2px solid var(--primary);background:#fcf3f0;align-items:center;gap:9px;margin-top:31px;padding:11px 12px;display:flex}.term-note span{color:var(--muted);font:10px var(--mono)}.term-note code{color:var(--ink);font:700 11px var(--mono)}.lesson-footer{border-top:1px solid var(--line);color:var(--muted);font:10px var(--mono);justify-content:space-between;padding-top:13px;display:flex;position:absolute;bottom:25px;left:9.5%;right:9.5%}.journey-notes{border:1px solid var(--line);background:#fff;grid-template-columns:1fr 1fr;display:grid}.journey-notes article{grid-template-columns:53px 1fr;gap:16px;padding:29px;display:grid}.journey-notes article+article{border-left:1px solid var(--line)}.journey-notes span{color:var(--primary);font:700 11px var(--mono)}.journey-notes h3{color:var(--ink);letter-spacing:-.04em;margin:0;font-size:17px}.journey-notes p{max-width:34rem;color:var(--muted);margin:9px 0 0;font-size:13px;line-height:1.65}.context-zone{padding-block:122px}.context-copy{grid-template-columns:1fr 350px;align-items:end;gap:70px;display:grid}.context-copy>p:last-child{color:var(--muted);margin:0 0 4px;font-size:15px;line-height:1.72}.context-image{border:1px solid var(--line);background:#fff;border-radius:10px;margin-top:59px;position:relative;overflow:hidden;box-shadow:0 20px 42px #3d405b1c}.context-image>img{object-fit:cover;object-position:top;width:100%;max-height:540px;display:block}.context-image figcaption{background:#f4fbf6;border:1px solid #d9e6df;border-radius:8px;align-items:flex-start;gap:10px;width:min(306px,100% - 48px);padding:14px;display:flex;position:absolute;bottom:24px;right:24px;box-shadow:0 10px 26px #3d405b24}.context-image figcaption img{border-radius:6px}.context-image figcaption strong{color:var(--ink);font-size:13px}.context-image figcaption p{color:var(--muted);margin:5px 0 0;font-size:11px;line-height:1.5}.finish{background:var(--ink);color:#fff;border-radius:10px;grid-template-columns:116px minmax(0,1fr) auto;align-items:end;gap:35px;margin-bottom:66px;padding:54px;display:grid}.finish-line{color:#f6b29f}.finish-line i{background:#f6b29f}.finish-line small{color:#c6c9d9}.finish-copy h2{color:#fff}.finish-copy p{color:#cfd2df;max-width:33rem;margin:20px 0 0;font-size:15px;line-height:1.68}.finish-actions{flex-direction:column;align-items:flex-start;gap:15px;display:flex}.install-button{color:#fff;background:var(--primary);border-radius:6px;padding:14px 17px;font-size:13px;font-weight:750;box-shadow:0 4px #783829}.source-link{border-bottom:1px solid;padding-bottom:3px;font-size:12px;font-weight:700}.flow-footer{border-top:1px solid var(--line);grid-template-columns:auto 1fr auto;align-items:center;gap:34px;min-height:112px;display:grid}.flow-footer p{max-width:425px;color:var(--faint);font-size:11px;line-height:1.5}.flow-footer nav{color:var(--primary);flex-wrap:wrap;gap:14px;font-size:12px;font-weight:700;display:flex}@media (width<=900px){.opening{grid-template-columns:86px 1fr}.opening-meta{display:none}.journey-header,.context-copy{grid-template-columns:1fr;gap:24px}.journey-header>p,.context-copy>p:last-child{margin:0}.journey-stage{grid-template-columns:1fr}.journey-rail{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;gap:12px;padding:14px 20px}.rail-item{flex:1;min-height:0}.rail-item:not(:last-child):after{width:1px;height:28px;inset:auto -7px 2px auto}.course-layout{grid-template-columns:145px minmax(0,1fr)}.finish{grid-template-columns:76px 1fr}.finish-actions{flex-direction:row;grid-column:2;align-items:center}.flow-footer{grid-template-columns:1fr;padding-block:28px}.flow-footer p{margin:0}}@media (width<=620px){.shell{width:min(100% - 32px,1172px)}.flow-header{grid-template-columns:1fr auto;min-height:70px}.flow-nav,.header-install{display:none}.opening{grid-template-columns:1fr;gap:25px;padding-block:58px 65px}.opening-index{flex-direction:row;align-items:center}.opening-index i{width:40px;height:1px}.opening-index small{max-width:none}.opening-copy h1{max-width:9.5ch;font-size:clamp(3rem,15vw,4.35rem);line-height:.97}.opening-copy p{margin-top:27px;font-size:15px}.journey-header{padding-top:72px}.journey-header h2,.context-copy h2,.finish-copy h2{max-width:10.5ch}.journey-stage{margin-top:42px}.journey-rail{padding-inline:15px;overflow:auto}.rail-item p{font-size:11px}.course-topbar{padding-inline:11px}.course-brand span,.demo-state{display:none}.course-layout{grid-template-columns:1fr}.course-sidebar{display:none}.lesson-panel{min-height:480px;padding:25px 22px}.lesson-bar{flex-direction:column;align-items:flex-start}.language-switch{justify-content:flex-start}.lesson-overline{margin-top:48px}.lesson-panel h3{font-size:clamp(1.8rem,8.4vw,2.35rem)}.lesson-body{font-size:14px;line-height:1.74}.lesson-footer{bottom:20px;left:22px;right:22px}.journey-notes{grid-template-columns:1fr}.journey-notes article+article{border-top:1px solid var(--line);border-left:0}.context-zone{padding-block:78px}.context-image{margin-top:37px}.context-image>img{object-fit:cover;object-position:top center;min-height:310px}.context-image figcaption{width:calc(100% - 24px);bottom:12px;right:12px}.finish{grid-template-columns:1fr;gap:28px;margin-bottom:36px;padding:31px 24px}.finish-line{flex-direction:row;align-items:center}.finish-line i{width:42px;height:1px}.finish-line small{max-width:none}.finish-actions{flex-direction:column;grid-column:auto;align-items:flex-start}.flow-footer{gap:18px}}.journey-rail button{text-align:left;cursor:pointer;width:100%;font:inherit;background:0 0;border:0}.rail-item{transition:color .18s,transform .18s}.rail-item:hover{color:var(--ink);transform:translate(2px)}.rail-item.active{color:var(--ink)}.rail-item.active span{color:var(--primary)}.course-lessons button{width:100%;color:var(--faint);text-align:left;cursor:pointer;font:10px var(--mono);background:0 0;border:0;gap:8px;padding:0;display:flex}.course-lessons button span{color:var(--muted);font:12px var(--sans)}.course-lessons button:hover span{color:var(--ink)}.course-lessons button.active{color:var(--primary);font-weight:700}.course-lessons button.active span{color:var(--ink);font-weight:700}.course-lessons em{font-style:normal}.course-lessons li:first-child button em{color:var(--sage)}.demo-tools{margin-top:17px;position:relative}.tutor-toggle{color:#245844;cursor:pointer;background:#f1faf5;border:1px solid #b9d2c5;border-radius:5px;align-items:center;gap:8px;padding:8px 10px;font-size:11px;font-weight:750;transition:transform .18s,background .18s;display:inline-flex}.tutor-toggle:hover{background:#e6f5ed;transform:translateY(-1px)}.tutor-spark{color:#4f9678;font-size:14px;line-height:1}.tutor-toggle>span:last-child{margin-left:2px;font-size:16px;font-weight:400}.tutor-panel{z-index:3;background:#f7fcf8;border:1px solid #b9d2c5;border-radius:8px;width:min(355px,100%);padding:14px;position:absolute;top:calc(100% + 10px);left:0;box-shadow:0 15px 30px #32574529}.tutor-panel[hidden]{display:none}.tutor-panel-head{align-items:center;gap:7px;display:flex}.tutor-panel-head strong{color:#245844;font-size:13px}.tutor-panel-head button{color:#55806e;cursor:pointer;background:0 0;border:0;margin-left:auto;padding:0 2px;font-size:20px;line-height:1}.tutor-panel>p{color:#497060;margin:11px 0 0;font-size:12px;line-height:1.55}.tutor-prompt{color:#245844;cursor:pointer;background:#fff;border:1px solid #b9d2c5;border-radius:4px;margin-top:12px;padding:7px 9px;font-size:11px;font-weight:700}.tutor-prompt:hover{background:#eef8f1}.tutor-answer{border-left:2px solid var(--sage);background:#fff;padding:9px}.tutor-panel small{color:#6f9181;font:9px var(--mono);margin-top:10px;display:block}.lesson-panel{min-height:495px}.lesson-footer{z-index:1}.course-demo[data-active-language]:after{content:"";pointer-events:none;position:absolute}.course-demo{position:relative}@media (width<=620px){.journey-rail button{min-width:118px}.course-lessons{display:none}.tutor-panel{width:100%;position:relative}.lesson-panel{min-height:548px}}@media (width>=621px){html[lang=ko] .opening{padding-block:68px 82px;display:block;position:relative}html[lang=ko] .opening-index{flex-direction:row;align-items:center;margin-bottom:30px}html[lang=ko] .opening-index i{width:44px;height:1px}html[lang=ko] .opening-index small{max-width:none}html[lang=ko] .opening-copy h1{letter-spacing:-.065em;white-space:normal;text-wrap:balance;max-width:none;font-size:clamp(2.9rem,3.8vw,3.8rem);line-height:1.06}html[lang=ko] .opening-copy p{max-width:43rem;margin-top:25px}html[lang=ko] .opening-meta{position:absolute;bottom:86px;right:0}}@media (width>=901px){.journey-header,.context-copy{grid-template-columns:minmax(0,1fr) 300px;gap:52px}.journey-header h2,.context-copy h2,.finish-copy h2{letter-spacing:-.065em;white-space:normal;text-wrap:balance;max-width:none;font-size:clamp(2.55rem,3.35vw,3.85rem);line-height:1.04}.journey-notes h3,.lesson-panel h3{max-width:none}.finish{grid-template-columns:116px minmax(0,1fr) 184px;gap:30px}}@media (width>=621px) and (width<=900px){.journey-header h2,.context-copy h2,.finish-copy h2{letter-spacing:-.065em;max-width:none;font-size:clamp(2.45rem,5.5vw,3.7rem);line-height:1.04}}@media (width<=620px){.journey-header h2,.context-copy h2,.finish-copy h2{white-space:normal;text-wrap:balance;max-width:10.5ch}}@media (width>=901px){.opening{padding-block:68px 82px;display:block;position:relative}.opening-index{flex-direction:row;align-items:center;margin-bottom:30px}.opening-index i{width:44px;height:1px}.opening-index small{max-width:none}.opening-copy h1{letter-spacing:-.065em;white-space:normal;text-wrap:wrap;width:min(100%,980px);max-width:none;font-size:clamp(2.85rem,4.25vw,4.6rem);line-height:1.06}.opening-copy h1 span{white-space:nowrap}.opening-copy p{max-width:43rem;margin-top:25px}.opening-meta{position:absolute;bottom:86px;right:0}.journey-header,.context-copy{grid-template-columns:minmax(0,1fr) 240px;gap:40px}.journey-header h2,.context-copy h2{letter-spacing:-.065em;white-space:normal;text-wrap:balance;max-width:none;font-size:clamp(2.35rem,3vw,3.2rem);line-height:1.04}.finish{grid-template-columns:116px minmax(0,1fr);gap:30px}.finish-copy h2{letter-spacing:-.06em;white-space:normal;text-wrap:balance;max-width:29ch;font-size:clamp(2.25rem,2.85vw,3rem);line-height:1.05}.finish-actions{flex-direction:row;grid-column:2;align-items:center}}@media (width>=621px) and (width<=900px){html[lang=ko] .opening-copy h1{white-space:normal;text-wrap:balance}}.extension-demo{border:1px solid var(--line);background:#fff;border-radius:10px;grid-template-columns:minmax(0,1fr) 282px;min-height:510px;display:grid;position:relative;overflow:hidden;box-shadow:0 16px 38px #3d405b1a}.extension-capture{background:#f4f4f1;min-width:0;margin:0;position:relative;overflow:hidden}.extension-capture>img{object-fit:cover;object-position:top left;width:100%;height:100%;min-height:510px;display:block}.extension-capture figcaption{color:#426457;background:#f8fdfaf2;border:1px solid #d7e4dd;border-radius:5px;align-items:center;gap:7px;margin:0;padding:8px 10px;font-size:10px;font-weight:700;display:flex;position:absolute;top:16px;right:16px}.translation-preview{z-index:2;color:#263b32;backdrop-filter:blur(8px);background:#f8fdfaf5;border:1px solid #b9d2c5f2;border-radius:8px;max-width:430px;padding:14px 15px;position:absolute;bottom:16px;left:16px;right:110px;box-shadow:0 12px 30px #2a503f2e}.translation-preview small{color:#4f7967;font:9px/1.3 var(--mono);letter-spacing:.04em;text-transform:uppercase;display:block}.translation-preview strong{margin-top:7px;font-size:15px;line-height:1.3;display:block}.translation-preview p{color:#4e645a;margin:6px 0 0;font-size:11px;line-height:1.5}.capture-dot{background:var(--sage);border-radius:50%;width:6px;height:6px}.extension-popup{border-left:1px solid var(--line);background:#fff;flex-direction:column;gap:16px;padding:22px 19px;display:flex}.extension-popup-head{border-bottom:1px solid var(--line);align-items:center;gap:9px;padding-bottom:14px;display:flex}.extension-popup-head img{width:26px;height:26px;display:block}.extension-popup-head strong,.extension-popup-head small{display:block}.extension-popup-head strong{color:var(--ink);font-size:14px}.extension-popup-head small{color:var(--muted);margin-top:2px;font-size:10px}.extension-field>span{color:var(--muted);font:10px var(--mono);text-transform:uppercase;letter-spacing:.04em;margin-bottom:7px;display:block}.extension-field 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