:root{color-scheme:dark;--bg:#111820;--fg:#eae9e2;--muted:#a0aab4;--soft:#76818e;--stroke:rgba(230,234,240,.16);--surface:rgba(22,29,37,.86);--panel:#1b242e;--accent:#d6b98b;--tint:rgba(214,185,139,.16);--shadow:0 20px 70px #0006}
*{box-sizing:border-box}html{height:100%;width:100%;overscroll-behavior:none}body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN",Meiryo,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior:none}body.light{color-scheme:light;--bg:#ebebe6;--fg:#202b36;--muted:#52606b;--soft:#687683;--stroke:rgba(20,30,44,.2);--surface:rgba(244,245,240,.9);--panel:#f4f4ee;--accent:#8c6843;--tint:rgba(140,104,67,.13);--shadow:0 20px 50px #3442}
button,input,select{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}a{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,#viewport:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.stage{height:100vh;height:100dvh;min-height:0;width:100%;position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(ellipse 46% 65% at 51% 52%,#323c43 0%,#202a32 48%,var(--bg) 100%)}body.light .stage{background:radial-gradient(ellipse 50% 65% at 52% 50%,#fffefa 0%,#e0e1de 56%,var(--bg) 100%)}
#viewport{position:absolute;inset:0;z-index:0;touch-action:none;user-select:none;-webkit-user-select:none;outline-offset:-3px}#viewport canvas{display:block;width:100%;height:100%;touch-action:none}.stage-grain{position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(180deg,#02060d45 0%,transparent 28%,transparent 71%,#03070c55 100%)}body.light .stage-grain{background:linear-gradient(180deg,#a2a7a722,transparent 25%,transparent 75%,#a2a7a733)}
.topbar{position:absolute;z-index:8;inset-inline:0;top:0;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:calc(19px + env(safe-area-inset-top,0px)) max(26px,env(safe-area-inset-right,0px)) 15px max(26px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--stroke);pointer-events:none}.topbar>*{pointer-events:auto}.brand{display:flex;align-items:center;gap:13px;min-width:0}.brand-emblem{width:43px;height:43px;display:grid;place-items:center;border:1px solid var(--accent);font:normal 29px Georgia,serif;line-height:1;position:relative;color:var(--accent);flex:none}.emblem-dot{position:absolute;bottom:4px;right:7px;font:normal 18px Georgia,serif}.brand-text{white-space:nowrap}.brand-text strong{font-size:14px;letter-spacing:.12em;font-weight:650}.brand-text strong span{font-weight:320}.brand-text small{display:block;color:var(--muted);font-size:8px;letter-spacing:.25em;margin-top:5px}.top-actions{display:flex;align-items:center;gap:8px}.ui-button{height:42px;background:var(--surface);border:1px solid var(--stroke);border-radius:8px;display:flex;align-items:center;justify-content:center;gap:10px;padding:0 15px;color:var(--fg);font-size:12px;font-weight:600;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.ui-button span:first-child{font-size:18px;font-weight:400}.ui-button strong{font-size:10px;color:var(--accent);margin-left:2px}.ui-button:hover,.ui-button[aria-expanded=true]{border-color:var(--accent);background:var(--panel)}
.intro{position:absolute;z-index:2;top:clamp(114px,19vh,215px);left:max(5%,env(safe-area-inset-left,0px));max-width:min(385px,34vw);pointer-events:none}.intro-top{display:flex;align-items:center;gap:12px}.eyebrow{font-size:10px;letter-spacing:.16em;color:var(--accent);white-space:nowrap}.intro-rule{width:26px;height:1px;background:var(--accent);opacity:.6}h1{font-size:clamp(31px,3.8vw,64px);font-weight:330;letter-spacing:-.055em;margin:17px 0 5px;line-height:1.03}.intro p{color:var(--muted)}#model-subtitle{font:italic 16px Georgia,serif;letter-spacing:.01em;margin:12px 0}#model-description{font-size:11px;letter-spacing:.07em;line-height:1.8;margin-top:20px}
.left-meta,.help-text{position:absolute;z-index:2;bottom:calc(103px + env(safe-area-inset-bottom,0px));font-size:9px;letter-spacing:.11em;color:var(--muted);pointer-events:none}.left-meta{left:max(5%,env(safe-area-inset-left,0px));display:flex;align-items:center;gap:8px}.live-dot{display:inline-block;width:6px;height:6px;background:var(--accent);border-radius:50%}.help-text{right:max(5%,env(safe-area-inset-right,0px))}.help-text span{margin:0 8px;color:var(--accent)}
.bottom-hud{z-index:4;position:absolute;bottom:calc(19px + env(safe-area-inset-bottom,0px));left:max(5%,env(safe-area-inset-left,0px));right:max(5%,env(safe-area-inset-right,0px));display:flex;align-items:center;justify-content:space-between;gap:12px;pointer-events:none}.bottom-hud>*{pointer-events:auto}.view-controls,.quick-actions{display:flex;align-items:center;gap:5px}.view-controls{padding:5px;border:1px solid var(--stroke);background:var(--surface);border-radius:10px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.controls-heading{font-size:9px;letter-spacing:.16em;color:var(--soft);padding:0 13px}.view-controls button{color:var(--muted);background:transparent;border:0;border-radius:6px;min-width:44px;height:41px;padding:0 12px;font-size:12px}.view-controls button.active{background:var(--accent);color:#141a1d;font-weight:750}.view-controls button:hover:not(.active){color:var(--fg);background:var(--tint)}.square-btn{width:50px;height:50px;border:1px solid var(--stroke);border-radius:10px;background:var(--surface);color:var(--fg);font-size:22px;backdrop-filter:blur(16px)}.download-btn{height:50px;display:inline-flex;align-items:center;gap:16px;justify-content:center;padding:0 20px;color:#12191e;background:var(--accent);border-radius:10px;text-decoration:none;font-size:12px;letter-spacing:.1em;font-weight:750;white-space:nowrap}.download-btn span:last-child{font-size:19px}
.loading{z-index:6;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:12px;white-space:nowrap;padding:16px 19px;background:var(--surface);border:1px solid var(--stroke);border-radius:10px;box-shadow:var(--shadow);font-size:12px}.loading[hidden],.error[hidden],.sheet[hidden],.sheet-backdrop[hidden]{display:none!important}.spinner{height:17px;width:17px;border:2px solid var(--stroke);border-top-color:var(--accent);border-radius:50%;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{z-index:5;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(460px,90vw);max-height:65vh;overflow:auto;text-align:center;background:var(--panel);padding:18px;border:1px solid var(--stroke);border-radius:12px}.error img{width:100%;max-height:220px;object-fit:contain}.error p{line-height:1.7;font-size:12px}.error button{padding:12px 20px;background:var(--accent);color:#12191e;border:0;border-radius:7px;font-weight:600}
.sheet-backdrop{position:absolute;z-index:9;inset:0;background:#0006;backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}.sheet{position:absolute;z-index:10;right:max(18px,env(safe-area-inset-right,0px));top:calc(86px + env(safe-area-inset-top,0px));width:min(385px,calc(100% - 36px));max-height:calc(100dvh - 108px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));overflow:auto;overscroll-behavior:contain;background:var(--panel);border:1px solid var(--stroke);border-radius:14px;box-shadow:var(--shadow);padding:23px}.sheet-header{display:flex;align-items:start;justify-content:space-between;gap:12px}.sheet-header small{font-size:9px;letter-spacing:.2em;color:var(--accent)}.sheet-header h2{margin:7px 0 0;font-size:21px;font-weight:500;letter-spacing:-.04em}.close-sheet{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--stroke);border-radius:8px;color:var(--fg);background:transparent;font-size:22px}.sheet-copy,.sheet-note{font-size:11px;line-height:1.8;color:var(--muted)}.sheet-copy{margin:18px 0}.sheet-note{margin:19px 0 0}.sheet-note code{font-family:monospace;font-size:11px}.model-list{display:grid;gap:10px}.model-card{display:flex;align-items:center;gap:13px;min-height:106px;padding:10px;background:transparent;border:1px solid var(--stroke);border-radius:10px;color:var(--fg);text-align:left;width:100%}.model-card.is-selected{border-color:var(--accent);background:var(--tint)}.model-card:hover{border-color:var(--accent)}.model-card img{width:110px;height:82px;object-fit:contain;flex:none;border-radius:6px;background:#47505a}.model-card .model-card-text{min-width:0;display:grid;gap:8px}.model-card small{color:var(--accent);font-size:9px;letter-spacing:.12em}.model-card strong{font-size:13px;letter-spacing:.03em}.model-card em{font-style:normal;font-size:10px;color:var(--muted)}.setting-block{border-bottom:1px solid var(--stroke);padding:21px 0}.setting-block label,.setting-row strong{display:flex;justify-content:space-between;font-size:12px;font-weight:600;color:var(--fg)}.setting-block output{color:var(--accent)}.setting-block input[type=range]{accent-color:var(--accent);width:100%;margin-top:19px;height:24px;cursor:pointer}.setting-block select{width:100%;margin-top:15px;border-radius:7px;border:1px solid var(--stroke);background:var(--surface);color:var(--fg);padding:13px;font-size:12px}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:12px}.setting-row>div{display:grid;gap:6px}.setting-row small,.setting-help{font-size:10px;color:var(--muted);line-height:1.7}.setting-row button,.wide-button{background:var(--surface);border:1px solid var(--stroke);border-radius:7px;color:var(--fg);font-size:12px;padding:11px 13px}.wide-button{margin-top:20px;width:100%;padding:14px}
@media(max-width:700px){.topbar{padding:calc(10px + env(safe-area-inset-top,0px)) calc(13px + env(safe-area-inset-right,0px)) 10px calc(13px + env(safe-area-inset-left,0px))}.brand{gap:8px}.brand-emblem{width:34px;height:34px;font-size:22px}.emblem-dot{font-size:14px;bottom:3px;right:5px}.brand-text strong{font-size:11px;letter-spacing:.08em}.brand-text small{font-size:6px;letter-spacing:.15em}.top-actions{gap:5px}.ui-button{height:38px;padding:0 9px;gap:5px;font-size:10px}.ui-button span:first-child{font-size:15px}.collection-button strong{font-size:9px}.ui-button .button-label{display:none}.intro{top:calc(79px + env(safe-area-inset-top,0px));left:calc(19px + env(safe-area-inset-left,0px));max-width:calc(100vw - 38px)}.eyebrow{font-size:8px}.intro-rule{width:14px}h1{font-size:clamp(29px,8vw,44px);margin:9px 0 0}#model-subtitle{font-size:12px;margin-top:7px}#model-description{font-size:9px;margin-top:10px}.bottom-hud{left:calc(11px + env(safe-area-inset-left,0px));right:calc(11px + env(safe-area-inset-right,0px));bottom:calc(11px + env(safe-area-inset-bottom,0px));gap:8px;flex-direction:column}.view-controls{width:100%;justify-content:space-between;padding:4px}.controls-heading{display:none}.view-controls button{flex:1;min-width:0;padding:0 2px;height:39px;font-size:12px}.quick-actions{width:100%;gap:8px}.square-btn{width:47px;height:43px;font-size:20px}.download-btn{height:43px;flex:1;gap:9px;font-size:12px}.left-meta{left:calc(17px + env(safe-area-inset-left,0px));bottom:calc(119px + env(safe-area-inset-bottom,0px));font-size:8px}.help-text{right:calc(17px + env(safe-area-inset-right,0px));bottom:calc(119px + env(safe-area-inset-bottom,0px));font-size:8px}.sheet{top:auto;right:0;left:0;bottom:0;width:100%;max-height:min(70dvh,650px);border-radius:18px 18px 0 0;padding:20px 22px calc(24px + env(safe-area-inset-bottom,0px));border-bottom:0}.loading{font-size:11px;padding:12px 14px} }
@media(max-width:370px){.brand-text strong{font-size:10px}.brand-text small{letter-spacing:.08em}.ui-button{padding:0 7px}.collection-button span:nth-child(2){display:none}.help-text{display:none}}
@media(orientation:landscape) and (max-height:550px){.topbar{padding:calc(7px + env(safe-area-inset-top,0px)) calc(14px + env(safe-area-inset-right,0px)) 5px calc(14px + env(safe-area-inset-left,0px));border:0}.brand-emblem{width:30px;height:30px;font-size:20px}.brand-text strong{font-size:10px}.brand-text small{font-size:6px}.ui-button{height:32px;padding:0 9px;font-size:10px}.intro{top:calc(61px + env(safe-area-inset-top,0px));left:calc(20px + env(safe-area-inset-left,0px));max-width:28vw}.intro-top .eyebrow:last-child,.intro-rule{display:none}.intro h1{font-size:clamp(21px,3vw,33px);margin:5px 0}.intro #model-subtitle{font-size:10px}.intro #model-description{display:none}.bottom-hud{bottom:calc(7px + env(safe-area-inset-bottom,0px));left:calc(13px + env(safe-area-inset-left,0px));right:calc(13px + env(safe-area-inset-right,0px));flex-direction:row;gap:8px}.view-controls{width:auto;flex:none}.view-controls button{width:40px;height:32px;font-size:10px}.quick-actions{width:auto;flex:none;gap:6px}.square-btn{width:36px;height:36px;font-size:19px}.download-btn{height:36px;min-width:69px;padding:0 9px;font-size:10px}.left-meta,.help-text{display:none}.sheet{right:0;left:auto;top:0;bottom:0;width:min(355px,60vw);max-height:100dvh;border-radius:12px 0 0 12px;padding-top:calc(18px + env(safe-area-inset-top,0px))}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
/* iPhone幅で日本語ボタンが2行に折り返されないようにする */
.ui-button{white-space:nowrap;flex-shrink:0}
.top-actions{flex-shrink:0}
@media(max-width:420px){.brand-text strong span,.brand-text small{display:none}.brand-text strong{font-size:12px;letter-spacing:.06em}.brand{gap:7px}.topbar{gap:7px}.collection-button{gap:5px}.ui-button{padding-inline:8px}}
/* Local gesture policy: OrbitControls retains one-finger orbit and two-finger dolly. */
#viewport,#viewport canvas{-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:none}
button,a,select{touch-action:manipulation}

/* v8 immersive whitelist (v7 behavior preserved): rules deliberately follow every responsive rule. */
.stage.is-immersive{position:fixed;inset:0;width:100%;height:100vh;height:100dvh;z-index:999;}
.stage:fullscreen,.stage:-webkit-full-screen{width:100%;height:100vh;height:100dvh;}
.stage.is-immersive > :not(#viewport):not(#immersive-reveal):not(#immersive-exit):not(#error){display:none!important;}
.immersive-corner,.immersive-exit{position:absolute;top:calc(10px + env(safe-area-inset-top,0px));right:calc(12px + env(safe-area-inset-right,0px));z-index:100;min-width:60px;min-height:48px;touch-action:manipulation;}
.immersive-corner{display:block;padding:0;width:64px;height:56px;border:0;background:transparent;color:transparent;box-shadow:none;opacity:1;-webkit-tap-highlight-color:transparent;}
.immersive-corner:focus-visible{outline:2px solid var(--accent);outline-offset:-3px;background:var(--surface);}
.immersive-corner:focus-visible::after{content:'戻る';color:var(--fg);font-size:12px;}
.immersive-exit{border:1px solid var(--stroke);border-radius:9px;padding:0 18px;background:var(--surface);color:var(--fg);font-size:13px;backdrop-filter:blur(16px);}
.immersive-corner[hidden],.immersive-exit[hidden]{display:none!important;}
.stage.is-immersive #error{z-index:110;}
/* CASTLE ARCHIVE: warm limestone, slate and quiet editorial typography. */
:root{color-scheme:light;--bg:#e8e4da;--fg:#343b3c;--muted:#757c79;--soft:#92958c;--stroke:#69726b33;--surface:#f1eee6df;--panel:#f3f0e8;--accent:#807052;--tint:#80705216;--shadow:0 20px 70px #283a3b20}
.stage{background:radial-gradient(ellipse 72% 62% at 52% 49%,#f6f3ec 0%,#e9e6dd 65%,#d7d9d1 100%)}.stage-grain{background:linear-gradient(180deg,#dadbd366 0%,transparent 22%,transparent 75%,#d0d4ca55 100%)}
.topbar{padding:calc(18px + env(safe-area-inset-top,0px)) 4%;border-bottom:1px solid var(--stroke)}.brand-emblem{border:0;width:34px;height:40px}.brand-emblem svg{width:32px;height:38px}.brand-text strong{font:15px Georgia,serif;letter-spacing:.15em}.brand-text small{font-size:7px;letter-spacing:.22em}.ui-button{border-radius:3px;background:transparent;backdrop-filter:none}.ui-button:hover{background:var(--surface)}
.intro{top:calc(107px + env(safe-area-inset-top,0px));left:4%;max-width:440px}.intro h1{font:clamp(27px,3.2vw,44px) Georgia,'Times New Roman',serif;letter-spacing:-.025em;line-height:1.1;margin:14px 0 0}.intro #model-subtitle{font:13px 'Hiragino Mincho ProN','Yu Mincho',serif;letter-spacing:.18em;margin-top:12px}.intro #model-description{font-size:10px;margin-top:11px;letter-spacing:.08em}.eyebrow{font-size:8px;letter-spacing:.16em}
.bottom-hud{left:4%;right:4%}.view-controls,.square-btn,.download-btn{border-radius:3px}.view-controls{background:var(--surface)}.view-controls button{border-radius:2px}.view-controls button.active,.download-btn{color:#fffdf5}.controls-heading{padding:0 12px}.view-controls button{min-width:44px}.download-btn{font-weight:500}.left-meta{left:4%;font-size:8px}.help-text{right:4%;font-size:8px}
.scene-switch{position:absolute;z-index:4;right:4%;top:calc(110px + env(safe-area-inset-top,0px));display:flex;gap:4px;border-bottom:1px solid var(--stroke);padding-bottom:8px}.scene-switch button{background:none;color:var(--muted);border:0;font-size:11px;min-width:52px;height:32px}.scene-switch button.active{color:var(--fg);font-weight:600;background:var(--tint)}.reference-link{position:absolute;right:4%;top:calc(176px + env(safe-area-inset-top,0px));font-size:10px;color:var(--muted);text-decoration:none;z-index:4;letter-spacing:.07em}.reference-link span{margin-left:8px}
.sheet{border-radius:4px}.model-card{border-radius:3px}.model-card img{object-fit:cover;background:#e2e4dd;border-radius:2px}.model-card strong{font:14px Georgia,serif}.sheet-header h2{font-size:20px}.loading{background:var(--surface);border-radius:3px}.spinner{border-top-color:var(--accent)}
body.night{color-scheme:dark;--bg:#0d1828;--fg:#d4dfdf;--muted:#8c9ca9;--soft:#687d8f;--stroke:#bfd5e42b;--surface:#142535df;--panel:#152737;--accent:#bca477;--tint:#bca47720;--shadow:0 20px 70px #0005}body.night .stage{background:radial-gradient(ellipse 65% 60% at 52% 45%,#263f55 0%,#142638 65%,#0d1928 100%)}body.night .stage-grain{background:linear-gradient(180deg,#08121d44,transparent 30%,transparent 70%,#07111b44)}body.night .model-card img{background:#243847}
@media(max-width:700px){.topbar{padding:calc(12px + env(safe-area-inset-top,0px)) 16px 12px;gap:6px}.brand-text strong{font-size:11px;letter-spacing:.09em}.brand-text small{font-size:5.5px}.brand-emblem{width:26px;height:31px}.brand-emblem svg{width:26px;height:31px}.ui-button{height:36px;font-size:10px;padding:0 8px}.collection-button span:nth-child(2){display:none}.intro{top:calc(83px + env(safe-area-inset-top,0px));left:20px;max-width:calc(100% - 40px)}.intro h1{font-size:28px;margin-top:11px}.intro #model-subtitle{font-size:11px;margin-top:8px;letter-spacing:.12em}.intro #model-description{font-size:9px;margin-top:10px}.scene-switch{top:auto;bottom:calc(157px + env(safe-area-inset-bottom,0px));right:16px;padding:3px;background:var(--surface);border:1px solid var(--stroke)}.scene-switch button{font-size:10px;min-width:45px;height:30px}.reference-link{top:auto;bottom:calc(165px + env(safe-area-inset-bottom,0px));left:18px;right:auto;font-size:10px}.bottom-hud{left:12px;right:12px}.left-meta{left:18px;bottom:calc(127px + env(safe-area-inset-bottom,0px));font-size:7px}.help-text{right:18px;bottom:calc(127px + env(safe-area-inset-bottom,0px));font-size:6px;letter-spacing:.04em}.help-text span{margin:0 3px}.sheet{border-radius:14px 14px 0 0}.view-controls button{min-width:0}.brand-text strong span{display:inline}}
@media(orientation:landscape) and (max-height:550px){.topbar{padding:calc(6px + env(safe-area-inset-top,0px)) 18px 5px;border:0}.intro{top:calc(59px + env(safe-area-inset-top,0px));left:22px;max-width:31vw}.intro h1{font-size:23px}.intro #model-subtitle{font-size:10px}.intro #model-description{display:none}.scene-switch{top:60px;bottom:auto;right:18px}.reference-link{top:110px;bottom:auto;right:18px;left:auto}.bottom-hud{bottom:calc(8px + env(safe-area-inset-bottom,0px));left:18px;right:18px}.view-controls button{min-width:35px}.controls-heading{display:none}.left-meta,.help-text{display:none}}
#viewport.render-mode{display:flex;align-items:center;justify-content:center;overflow:hidden}#render-preview{width:min(1080px,94vw);height:calc(100% - 170px);object-fit:contain;margin-top:60px;user-select:none;-webkit-user-drag:none;transform-origin:50% 55%;pointer-events:none}button:disabled{opacity:.6;cursor:default}@media(max-width:700px){#render-preview{width:132vw;max-width:none;flex-shrink:0;height:calc(100% - 260px);margin-top:20px}}@media(orientation:landscape) and (max-height:550px){#render-preview{width:72vw;height:90%;margin-top:10px}}
.view-controls button{white-space:nowrap}@media(max-width:700px){#render-preview{width:100vw}.intro #model-description{font-size:10px}.help-text{font-size:7px;letter-spacing:0}}@media(orientation:landscape) and (max-height:550px){.view-controls button{width:42px;padding-inline:6px}}