:root{color-scheme:light;--ink: #0a0a0a;--paper: #fafaf8;--grey-100: #f0f0ee;--grey-300: #d8d8d4;--grey-500: #8a8a86;--grey-700: #4a4a46;--volt: #c8ff00;--font-heading: "Archivo", "Noto Sans JP", system-ui, sans-serif;--font-body: "Inter", "Noto Sans JP", "Hiragino Sans", system-ui, sans-serif;--content-max: 1120px;--gutter: 20px}@media (min-width: 900px){:root{--gutter: 56px}}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font-body);background:var(--paper);color:var(--ink);-webkit-tap-highlight-color:transparent}button,input{font-family:inherit;font-size:1rem}h1,h2,h3{font-family:var(--font-heading);margin:0}h1{font-size:clamp(2.2rem,6vw,3.6rem);font-weight:900;letter-spacing:-.02em;line-height:1.05;text-transform:uppercase;margin:0 0 40px}h2{display:flex;flex-direction:column;gap:6px;font-size:1.15rem;font-weight:700;color:var(--ink);margin:0 0 24px}.h2-label{font-family:var(--font-body);font-size:10px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--grey-500)}p{line-height:1.7}a{color:var(--ink)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--volt);outline-offset:2px}.app-shell{display:flex;flex-direction:column;min-height:100%}.app-header{display:flex;align-items:center;justify-content:space-between;gap:.75rem;height:56px;padding:0 var(--gutter);background:var(--ink);color:#fff;position:sticky;top:0;z-index:10}.app-logo{font-family:var(--font-heading);font-weight:900;text-transform:uppercase;letter-spacing:.05em;text-decoration:none;color:#fff;font-size:1.05rem;white-space:nowrap}.app-user{display:flex;align-items:center;gap:32px;min-width:0}.app-user-name{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--grey-500);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:40vw}.app-logout{display:inline-flex;align-items:center;min-height:44px;padding:0;background:none;border:none;color:#fff;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.12em;cursor:pointer;transition:color .18s ease}.app-logout:hover{color:var(--volt)}.app-main{flex:1;padding:48px var(--gutter) 96px;max-width:var(--content-max);width:100%;margin:0 auto}.page{display:flex;flex-direction:column}.page-loading{padding:4rem 0;text-align:center;font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--grey-500)}.divider{border:none;border-top:1px solid var(--grey-300);margin:0}.section{padding-top:64px;margin-top:64px;border-top:1px solid var(--grey-300)}.section:first-of-type{padding-top:0;margin-top:48px;border-top:none}.breadcrumbs{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--grey-500);margin-bottom:20px;word-break:break-word}.breadcrumb-item [aria-current=page]{color:var(--ink);font-weight:600}.breadcrumbs a{color:var(--grey-500);text-decoration:none}.breadcrumbs a:hover{color:var(--ink);text-decoration:underline}.breadcrumb-sep{padding:0 .4em}.form{display:flex;flex-direction:column;gap:1.5rem;margin-bottom:1.5rem}.form-inline{flex-direction:row;align-items:flex-end;gap:16px;max-width:560px}.form-inline .field{flex:1;min-width:0}.form-inline .btn{flex-shrink:0}.field{display:flex;flex-direction:column;gap:.5rem}.field>span:first-child{font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:var(--grey-700)}.field-grow{flex:1}.field input,.field select{border:none;border-bottom:1px solid var(--grey-300);border-radius:0;background:transparent;padding:.7rem .1rem;font-size:1rem;min-height:44px;color:var(--ink)}.field input:focus{outline:none;border-bottom:1px solid var(--ink);box-shadow:0 1px 0 0 var(--ink)}.field input:focus-visible{outline:none}input:-webkit-autofill,input:-webkit-autofill:hover,input:-webkit-autofill:focus{-webkit-box-shadow:0 0 0 1000px var(--paper) inset;box-shadow:0 0 0 1000px var(--paper) inset;-webkit-text-fill-color:var(--ink);caret-color:var(--ink)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:14px 28px;border-radius:0;border:1px solid var(--ink);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.12em;cursor:pointer;white-space:nowrap;text-decoration:none;transition:background-color .18s ease,color .18s ease,border-color .18s ease}.btn:disabled{opacity:1;cursor:not-allowed;background:var(--grey-100);border-color:var(--grey-300);color:var(--grey-500)}.btn-primary{background:var(--ink);color:#fff}.btn-primary:hover:not(:disabled){background:var(--volt);color:var(--ink);border-color:var(--volt)}.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}.btn-secondary:hover:not(:disabled){background:var(--ink);color:#fff}.btn-danger{background:transparent;color:var(--ink);border-color:var(--grey-300)}.btn-danger:hover:not(:disabled){background:var(--ink);color:#fff;border-color:var(--ink)}.error-banner{background:var(--ink);color:#fff;border-left:4px solid var(--volt);padding:.9rem 1.1rem;margin-bottom:1.25rem;font-size:.9rem;line-height:1.5}.empty-state{font-family:var(--font-heading);font-weight:500;font-size:1.4rem;color:var(--grey-500);text-align:center;padding:96px 0;margin:0}.hint-text{color:var(--grey-500);font-size:11px;text-transform:uppercase;letter-spacing:.06em;margin:.75rem 0 0}.card-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr;gap:24px}@media (min-width: 640px){.card-list{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.card-list{grid-template-columns:repeat(3,1fr)}}.card-list-item{border:1px solid var(--grey-300);background:#fff}.card-link{position:relative;display:flex;flex-direction:column;gap:8px;padding:28px 56px 28px 28px;min-height:148px;text-decoration:none;color:var(--ink);justify-content:center;transition:border-color .18s ease}.card-list-item:hover{border-color:var(--ink)}.card-label{font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:var(--grey-500)}.card-title{font-family:var(--font-heading);font-weight:700;font-size:clamp(1.4rem,2vw,1.8rem);line-height:1.2}.card-sub{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--grey-500)}.card-arrow{position:absolute;right:28px;bottom:28px;font-family:var(--font-heading);font-size:1.25rem;transition:transform .18s ease}.card-list-item:hover .card-arrow{transform:translate(4px)}.invite-link-box{display:flex;flex-direction:column;gap:.75rem;margin-top:1rem}@media (min-width: 640px){.invite-link-box{flex-direction:row}}.invite-link-box input{flex:1;border:none;border-bottom:1px solid var(--grey-300);padding:.7rem .1rem;min-height:44px;background:transparent;color:var(--ink)}.storage-usage{margin-bottom:1.25rem}.storage-usage-label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--grey-500);margin-bottom:8px}.storage-usage-bar{height:3px;background:var(--grey-100)}.storage-usage-bar-fill{height:100%;background:var(--grey-700)}.upload-box{display:flex;flex-direction:column;gap:.75rem}.upload-dropzone{position:relative;display:flex;align-items:center;justify-content:center;border:1px dashed var(--grey-500);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .18s ease,background-color .18s ease;min-height:44px}.upload-dropzone:hover{border-color:var(--ink);background:var(--grey-100)}.upload-dropzone-input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.upload-dropzone-input:disabled{cursor:not-allowed}.upload-dropzone-text{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--grey-700);pointer-events:none}.upload-progress{position:relative;height:3px;background:var(--grey-300)}.upload-progress-bar{position:absolute;inset:0 auto 0 0;background:var(--volt);transition:width .2s ease}.upload-progress-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--grey-700);margin:0}.video-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:40px}.video-item{border:1px solid var(--grey-300);background:#fff}.video-player{width:100%;aspect-ratio:16 / 9;max-height:none;background:#000;display:block}.video-meta{display:flex;justify-content:space-between;gap:.5rem;font-size:.85rem;color:var(--grey-500);margin:.9rem 0;word-break:break-all}.video-actions{display:flex;gap:.75rem;flex-wrap:wrap}.video-item .video-meta{margin:0;padding:16px 20px 12px;border-top:1px solid var(--grey-300)}.video-item .video-actions{padding:0 20px 20px}.video-pinned-band{background:var(--ink);color:#fff;padding:28px;margin-bottom:40px}.best-tag{display:inline-block;background:var(--volt);color:var(--ink);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:4px 10px;margin-bottom:16px}.video-pinned-band .video-meta{color:var(--grey-300)}.video-pinned-band .btn-secondary{border-color:#fff;color:#fff}.video-pinned-band .btn-secondary:hover:not(:disabled){background:#fff;color:var(--ink)}.video-pinned-band .btn-danger{border-color:var(--grey-700);color:#fff}.video-pinned-band .btn-danger:hover:not(:disabled){background:#fff;color:var(--ink);border-color:#fff}.auth-page{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px var(--gutter);background:var(--paper)}.auth-card{width:100%;max-width:420px;background:#fff;border:1px solid var(--grey-300);padding:48px 36px}.auth-wordmark{font-family:var(--font-heading);font-weight:900;text-transform:uppercase;letter-spacing:.02em;font-size:clamp(2.2rem,8vw,3rem);line-height:1;text-align:center;margin:0 0 12px}.auth-card h2{text-align:center;margin-bottom:32px}.auth-switch{text-align:center;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--grey-500);margin-top:24px}.auth-switch a{color:var(--ink);text-decoration:underline}@media (prefers-color-scheme: dark){:root{color-scheme:light}}