:root{--bg:#060c0d;--surface:#0d1413;--surface-2:#151d1a;--surface-3:#20261f;--text:#f7f1e7;--muted:#abb4aa;--gold:#d7ad58;--red:#8b3b34;--jade:#70b6aa;--ink:#101714;--line:#f7f1e724;--line-strong:#f7f1e73d}*{box-sizing:border-box}html,body{background:var(--bg);width:100%;min-height:100%;color:var(--text);margin:0;font-family:Arial,Apple SD Gothic Neo,Noto Sans KR,sans-serif}body{overflow-x:hidden}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.7}.landing-page{background:var(--bg);min-height:100vh}.landing-hero{align-items:center;min-height:100vh;padding:74px clamp(20px,7vw,104px);display:flex;position:relative;overflow:hidden}.landing-hero-image,.offline-hero-image{object-fit:cover;object-position:center}.landing-scrim{z-index:1;background:linear-gradient(90deg,#060c0deb 0%,#060c0da3 42%,#060c0d2e 72%,#060c0db8 100%),linear-gradient(#060c0d1f 0%,#060c0dd6 100%);position:absolute;inset:0}.constellation-backdrop{z-index:2;pointer-events:none;position:absolute;inset:0}.hero-moon-image{opacity:.84;filter:drop-shadow(0 0 36px #e8dbbc38);width:clamp(120px,15vw,230px);height:auto;position:absolute;top:clamp(34px,8vh,84px);right:clamp(34px,7vw,112px)}.constellation-map{opacity:.86;width:100%;height:62%;position:absolute;inset:0}.constellation{fill:#f7f1e7;stroke:#f7f1e7a8;stroke-width:1.15px;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 5px #f7f1e773)}.constellation polyline{fill:none}.constellation circle{stroke:none;filter:drop-shadow(0 0 8px #f7f1e7bf)}.constellation-dipper{transform-origin:50%;transform:translate(18px,18px)scale(.92)}.constellation-orion{transform-origin:50%;opacity:.88;transform:translate(18px)scale(.9)}.constellation-cassiopeia{transform-origin:50%;opacity:.78;transform:translate(34px,-18px)scale(.86)}.landing-content{z-index:2;width:min(720px,100%);position:relative}.eyebrow{color:var(--gold);letter-spacing:0;margin:0 0 12px;font-size:.82rem;font-weight:700}.landing-content h1{letter-spacing:0;margin:0;font-size:clamp(4rem,16vw,11rem);line-height:.86}.hero-subtitle{color:#e6decc;width:min(620px,100%);margin:28px 0 0;font-size:clamp(1.08rem,2.2vw,1.42rem);line-height:1.65}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:34px;display:flex}.primary-action,.command-button,.secondary-command,.ghost-link,.icon-link{border:0;border-radius:8px;justify-content:center;align-items:center;gap:9px;min-height:44px;font-weight:800;display:inline-flex}.primary-action,.command-button{background:var(--gold);color:#1d1610;padding:0 18px;box-shadow:0 10px 22px #d7ad582e}.command-button{min-height:46px}.command-button:hover,.primary-action:hover{background:#e1bc67}.secondary-command{border:1px solid var(--line);width:100%;color:var(--text);background:#ffffff09;padding:0 16px}.secondary-command:hover,.icon-link:hover,.segment:hover,.format-button:hover{background:#fff1;border-color:#d7ad586b}.ghost-link{width:fit-content;color:var(--text);background:#0710128c;border:1px solid #f6efe240;padding:0 14px}.landing-place{z-index:2;color:#f7f1e7d6;border-left:2px solid #d7ad58c7;padding-left:12px;font-weight:800;position:absolute;bottom:clamp(20px,5vw,54px);right:clamp(20px,5vw,72px)}.experience-shell{background:#060c0d;height:100vh;overflow:hidden}.topbar{z-index:10;border:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#060c0db8;border-radius:8px;justify-content:space-between;align-items:center;gap:16px;height:54px;padding:0 12px;display:flex;position:fixed;top:14px;left:14px;right:calc(clamp(340px,30vw,420px) + 14px)}.topbar div{flex-direction:column;align-items:center;min-width:0;display:flex}.topbar strong{font-size:1.02rem}.topbar span{color:var(--muted);font-size:.78rem}.icon-link{border:1px solid var(--line);width:38px;height:38px;color:var(--text);background:#ffffff0b;padding:0}.experience-layout{grid-template-columns:minmax(0,1fr) minmax(340px,420px);height:100vh;display:grid}.scene-wrap{min-width:0;height:100vh;position:relative}.scene-loading{height:100%;color:var(--muted);place-items:center;display:grid}.scene-caption{z-index:3;color:#f1e6d2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#060c0db8;border:1px solid #d7ad5852;border-radius:8px;padding:9px 12px;font-size:.9rem;font-weight:800;position:absolute;bottom:24px;left:24px}.side-panel{border-left:1px solid var(--line);background:linear-gradient(#0f1513fa,#080c0cfc),repeating-linear-gradient(90deg,#ffffff05 0 1px,#0000 1px 10px);flex-direction:column;height:100vh;padding:80px 24px 18px;display:flex}.panel-section{scrollbar-width:thin;scrollbar-color:#d7ad5866 transparent;flex-direction:column;flex:1;gap:14px;min-height:0;padding-right:2px;display:flex;overflow-y:auto}.panel-section h2{letter-spacing:0;word-break:keep-all;margin:0;font-size:clamp(1.42rem,2.2vw,1.82rem);line-height:1.22}.panel-section p{color:#d8d0c0;margin:0;line-height:1.7}.panel-section .command-button{width:100%;margin-top:2px}.location-line,.meta-row{border:1px solid var(--line);color:#e9ddc7;background:#ffffff09;border-radius:8px;justify-content:space-between;align-items:center;gap:10px;padding:12px 13px;display:flex}.location-line{justify-content:flex-start}.plain-list{gap:8px;margin:0;padding:0;list-style:none;display:grid}.plain-list li{border-left:2px solid var(--jade);color:#d8d6c8;padding-left:10px;line-height:1.5}.heritage-connection{background:#d7ad5814;border-left:2px solid #d7ad58c2;padding:12px 14px}.control-group{gap:10px;display:grid}.control-label{color:#ddc487;font-size:.86rem;font-weight:800}.segmented-list{gap:8px;display:grid}.segment,.format-button{border:1px solid var(--line);color:var(--text);text-align:left;background:#ffffff09;border-radius:8px}.segment{gap:4px;padding:11px 12px;display:grid}.segment small{color:var(--muted);line-height:1.35}.segment.active,.format-button.active{background:#d7ad581a;border-color:#d7ad58b8}.format-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.format-button{text-align:center;justify-content:center;align-items:center;gap:7px;min-height:44px;display:flex}.prompt-textarea{resize:vertical;width:100%;min-height:118px;color:var(--text);background:#ffffff0b;border:1px solid #d7ad5847;border-radius:8px;outline:none;padding:12px;line-height:1.55}.prompt-textarea:focus{border-color:#d7ad58b8;box-shadow:0 0 0 3px #d7ad581f}.error-text{background:#9e363229;border:1px solid #9e363299;border-radius:8px;padding:10px 12px;color:#ffd8cf!important}.result-preview{aspect-ratio:4/3;border:1px solid var(--line-strong);background:#111816;border-radius:8px;width:100%;position:relative;overflow:hidden}.result-preview img{object-fit:contain}.result-badge{color:#fff7df;background:#060c0dc2;border-radius:999px;align-items:center;gap:6px;padding:7px 10px;font-size:.8rem;display:inline-flex;position:absolute;top:10px;left:10px}.media-control{width:100%}.video-player{aspect-ratio:16/9;border:1px solid var(--line);background:#080c0b;border-radius:8px;width:100%;overflow:hidden}.video-fallback{border:1px solid var(--line);background:linear-gradient(135deg,#4fb9a92e,#9e363238);border-radius:8px;place-items:center;min-height:86px;display:grid;position:relative;overflow:hidden}.video-fallback span{background:#e0b65a2e;width:46%;height:140%;animation:2.8s linear infinite sweep;position:absolute;transform:rotate(18deg)}.video-fallback p{font-weight:800;position:relative}.qr-box{width:100%;min-height:232px;color:var(--ink);background:#fff8ed;border:1px solid #d7ad5857;border-radius:8px;place-items:center;display:grid}.qr-mode-list{gap:8px;display:grid}.qr-mode-list div{border:1px solid var(--line);background:#ffffff09;border-radius:8px;justify-content:space-between;align-items:center;gap:10px;padding:11px 12px;display:flex}.qr-mode-list strong{color:#fff3d2}.qr-mode-list span{color:var(--muted);text-align:right;font-size:.88rem}.qr-url{overflow-wrap:anywhere;border-left:2px solid #d7ad58b3;padding-left:10px;font-size:.82rem;color:#c8d0c7!important}.spin{animation:1s linear infinite spin}.offline-page{color:#17231f;background:#fff8ec;min-height:100vh}.offline-hero{color:#fff8ec;background:#17231f;align-content:end;min-height:56vh;padding:28px clamp(18px,5vw,72px) 58px;display:grid;position:relative;overflow:hidden}.offline-hero .ghost-link{z-index:3;position:absolute;top:24px;left:clamp(18px,5vw,72px)}.offline-scrim{z-index:1;background:linear-gradient(90deg,#0c1210e0 0%,#0c1210a8 44%,#0c12102e 78%),linear-gradient(#0c12102e 0%,#0c1210db 100%);position:absolute;inset:0}.offline-hero-inner{z-index:2;grid-template-columns:minmax(0,1fr) minmax(280px,390px);align-items:end;gap:clamp(24px,5vw,64px);display:grid;position:relative}.offline-copy{width:min(640px,100%);position:relative}.offline-copy h1{margin:0;font-size:clamp(2.8rem,9vw,6rem);line-height:.94}.offline-copy p:not(.eyebrow){color:#e8e0cf;width:min(560px,100%);line-height:1.7}.offline-actions{flex-wrap:wrap;gap:10px;margin-top:24px;display:flex}.offline-quick-card{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0b110fb8;border:1px solid #fff8ec38;border-radius:8px;gap:14px;padding:20px;display:grid}.offline-quick-card strong{color:#ffe4a4;font-size:1.04rem}.offline-quick-card div{color:#eee4d3;border-top:1px solid #fff8ec21;align-items:flex-start;gap:10px;padding-top:13px;line-height:1.45;display:flex}.offline-grid,.bridge-step-section,.visit-summary-section,.visit-point-section,.course-section{width:min(1120px,100% - 36px);margin:0 auto}.bridge-step-section{z-index:4;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:-34px;display:grid;position:relative}.bridge-step-item{background:#fff;border:1px solid #17231f24;border-radius:8px;align-items:flex-start;gap:14px;padding:18px;display:flex;box-shadow:0 18px 34px #17231f1a}.bridge-step-item>span{color:#dfb457;background:#17231f;border-radius:50%;flex:0 0 42px;place-items:center;width:42px;height:42px;font-weight:900;display:grid}.bridge-step-item strong{font-size:1.04rem}.bridge-step-item p{color:#526058;margin:6px 0 0;line-height:1.52}.visit-summary-section{grid-template-columns:minmax(0,1fr) minmax(280px,420px);align-items:stretch;gap:24px;padding:34px 0 4px;display:grid}.visit-summary-copy{border-left:3px solid #8e2f2b;padding-left:18px}.visit-summary-copy h2{margin:0;font-size:clamp(1.8rem,3vw,2.6rem);line-height:1.16}.visit-summary-copy p:not(.eyebrow){color:#526058;width:min(620px,100%);line-height:1.68}.visit-summary-card{color:#fff8ec;background:#17231f;border:1px solid #17231f29;border-radius:8px;gap:0;display:grid;overflow:hidden}.visit-summary-card div{border-bottom:1px solid #fff8ec1f;gap:4px;padding:16px 18px;display:grid}.visit-summary-card div:last-child{border-bottom:0}.visit-summary-card span{color:#dfb457;font-size:.82rem;font-weight:800}.visit-summary-card strong{font-size:1.02rem}.offline-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:30px 0 10px;display:grid}.info-band{background:#fff;border:1px solid #17231f29;border-radius:8px;align-items:flex-start;gap:14px;padding:18px;display:flex}.info-band h2,.course-section h2{margin:0 0 6px}.info-band p{color:#526058;margin:0}.info-band a{color:#8e2f2b;font-weight:800}.visit-point-section{padding:18px 0 10px}.visit-point-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.visit-point-item{background:#fff;border:1px solid #17231f29;border-radius:8px;padding:18px}.visit-point-item strong{font-size:1.06rem}.visit-point-item p{color:#526058;margin:8px 0 0;line-height:1.55}.course-section{padding:22px 0 60px}.section-heading{align-items:center;gap:10px;margin-bottom:14px;display:flex}.course-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.course-item{background:#fff;border:1px solid #17231f29;border-radius:8px;gap:8px;padding:18px;display:grid}.course-item strong{font-size:1.08rem}.course-item span{color:#8e2f2b;font-weight:800}.course-item p{color:#526058;margin:0;line-height:1.55}@keyframes spin{to{transform:rotate(360deg)}}@keyframes sweep{0%{left:-60%}to{left:120%}}@media (max-width:920px){.experience-shell{height:auto;min-height:100vh;overflow:visible}.experience-layout{grid-template-columns:1fr;height:auto}.scene-wrap{height:58vh;min-height:420px}.side-panel{border-left:0;border-top:1px solid var(--line);height:auto;min-height:42vh;padding:22px}.topbar{border-left:0;border-right:0;border-radius:0;position:sticky;top:0;left:0;right:0}.scene-caption{bottom:14px;left:14px;right:14px}.offline-hero-inner,.visit-summary-section{grid-template-columns:1fr}.bridge-step-section{margin-top:18px}.bridge-step-section,.offline-grid,.visit-point-list,.course-list{grid-template-columns:1fr}}@media (max-width:560px){.landing-hero{align-items:end;padding:48px 18px 64px}.landing-scrim{background:linear-gradient(#060c0d3d 0%,#060c0de6 62%,#060c0df5 100%),linear-gradient(90deg,#060c0dc2,#060c0d33)}.landing-place{bottom:22px;left:18px;right:auto}.format-grid{grid-template-columns:1fr}.panel-section h2{font-size:1.55rem}.offline-hero-image{object-position:58% center}}