:root{--color-primary: hsl(172, 66%, 44%);--color-primary-dark: hsl(172, 66%, 34%);--color-primary-light: hsl(172, 66%, 92%);--color-primary-alpha: hsla(172, 66%, 44%, .12);--color-accent: hsl(12, 90%, 62%);--color-accent-light: hsl(12, 90%, 94%);--color-success: hsl(152, 60%, 42%);--color-error: hsl(0, 72%, 56%);--color-bg: hsl(220, 20%, 97%);--color-surface: hsl(0, 0%, 100%);--color-text: hsl(220, 20%, 15%);--color-text-secondary: hsl(220, 10%, 50%);--color-text-tertiary: hsl(220, 8%, 68%);--color-border: hsl(220, 15%, 90%);--color-divider: hsl(220, 15%, 94%);--cat-video: hsl(172, 66%, 44%);--cat-music: hsl(280, 60%, 55%);--cat-game: hsl(210, 70%, 52%);--cat-cloud: hsl(200, 65%, 50%);--cat-telecom: hsl(12, 90%, 62%);--cat-fitness: hsl(145, 55%, 45%);--cat-news: hsl(38, 85%, 55%);--cat-software: hsl(250, 55%, 58%);--cat-other: hsl(220, 10%, 60%);--space-2xs: 2px;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--space-3xl: 64px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 28px;--radius-full: 9999px;--shadow-sm: 0 1px 3px hsla(220, 20%, 15%, .04), 0 1px 2px hsla(220, 20%, 15%, .06);--shadow-md: 0 4px 12px hsla(220, 20%, 15%, .06), 0 2px 4px hsla(220, 20%, 15%, .04);--shadow-lg: 0 8px 24px hsla(220, 20%, 15%, .1), 0 4px 8px hsla(220, 20%, 15%, .04);--shadow-xl: 0 16px 48px hsla(220, 20%, 15%, .12);--font-family: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.2;--line-height-normal: 1.5;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s cubic-bezier(.16, 1, .3, 1);--header-height: 56px;--bottom-nav-height: 64px;--content-max-width: 600px;--safe-area-bottom: env(safe-area-inset-bottom, 0px)}@media(prefers-color-scheme:dark){:root{--color-bg: hsl(220, 25%, 8%);--color-surface: hsl(220, 20%, 13%);--color-text: hsl(220, 10%, 92%);--color-text-secondary: hsl(220, 8%, 58%);--color-text-tertiary: hsl(220, 6%, 42%);--color-border: hsl(220, 15%, 22%);--color-divider: hsl(220, 15%, 18%);--color-primary-alpha: hsla(172, 66%, 44%, .2);--shadow-sm: 0 1px 3px hsla(0, 0%, 0%, .2);--shadow-md: 0 4px 12px hsla(0, 0%, 0%, .3);--shadow-lg: 0 8px 24px hsla(0, 0%, 0%, .4);--shadow-xl: 0 16px 48px hsla(0, 0%, 0%, .5)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text);background-color:var(--color-bg);min-height:100dvh;overflow-x:hidden}#root{min-height:100dvh;display:flex;flex-direction:column}a{color:var(--color-primary);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}input,select,textarea{font-family:inherit;font-size:var(--font-size-base)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.card{background:var(--color-surface);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:var(--space-lg)}.glass-overlay{position:fixed;inset:0;background:#1f242e66;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:100;display:flex;align-items:flex-end;justify-content:center}@media(min-width:768px){.glass-overlay{align-items:center}}.glass-modal{background:var(--color-surface);border-radius:var(--radius-xl) var(--radius-xl) 0 0;box-shadow:var(--shadow-xl);width:100%;max-width:var(--content-max-width);max-height:90dvh;overflow-y:auto;animation:slideUp var(--transition-slow) forwards}@media(min-width:768px){.glass-modal{border-radius:var(--radius-xl)}}@keyframes slideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);transition:all var(--transition-fast);min-height:44px}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);box-shadow:var(--shadow-md)}.btn-primary:active{transform:scale(.97)}.btn-ghost{color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-primary-alpha);color:var(--color-primary)}.fab{position:fixed;bottom:calc(var(--bottom-nav-height) + var(--space-lg) + var(--safe-area-bottom));right:var(--space-lg);width:56px;height:56px;border-radius:var(--radius-full);background:var(--color-primary);color:#fff;font-size:var(--font-size-2xl);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);transition:all var(--transition-fast);z-index:50}.fab:hover{background:var(--color-primary-dark);transform:scale(1.08);box-shadow:var(--shadow-xl)}.fab:active{transform:scale(.95)}.input-field{width:100%;padding:var(--space-sm) var(--space-md);border:1.5px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-text);font-size:var(--font-size-base);min-height:44px;transition:border-color var(--transition-fast)}.input-field:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-alpha)}.input-field::placeholder{color:var(--color-text-tertiary)}.toast{position:fixed;bottom:calc(var(--bottom-nav-height) + var(--space-xl) + var(--safe-area-bottom));left:50%;transform:translate(-50%);background:var(--color-text);color:var(--color-bg);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);box-shadow:var(--shadow-lg);z-index:200;animation:fadeIn var(--transition-base) forwards}.loading-spinner{width:36px;height:36px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-danger{background:var(--color-error);color:#fff}.btn-danger:hover{opacity:.9}body.modal-open{overflow:hidden}.header{height:var(--header-height);display:flex;align-items:center;justify-content:center;background:var(--color-surface);border-bottom:1px solid var(--color-divider);position:sticky;top:0;z-index:40}.header-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-bold);letter-spacing:-.02em;display:flex;align-items:center;gap:var(--space-sm)}.header-icon{font-size:var(--font-size-xl)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:calc(var(--bottom-nav-height) + var(--safe-area-bottom));padding-bottom:var(--safe-area-bottom);background:var(--color-surface);border-top:1px solid var(--color-divider);display:flex;align-items:stretch;justify-content:space-around;z-index:40}.bottom-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-2xs);text-decoration:none;color:var(--color-text-tertiary);font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);transition:color var(--transition-fast);-webkit-tap-highlight-color:transparent}.bottom-nav-item:hover{color:var(--color-text-secondary)}.bottom-nav-item--active{color:var(--color-primary)}.bottom-nav-icon{font-size:1.35rem;line-height:1}.bottom-nav-label{line-height:1}.layout{display:flex;flex-direction:column;min-height:100dvh}.layout-main{flex:1;width:100%;max-width:var(--content-max-width);margin:0 auto;padding:var(--space-lg) var(--space-md);padding-bottom:calc(var(--bottom-nav-height) + var(--space-xl) + var(--safe-area-bottom))}