:root{color-scheme:light;--color-bg:#fafafa;--color-surface:#ffffff;--color-surface-2:#f4f4f5;--color-text:#18181b;--color-muted:#71717a;--color-faint:#a1a1aa;--color-border:#e6e6ea;--color-border-strong:#d4d4d8;--color-primary:#4f46e5;--color-primary-hover:#4338ca;--color-primary-soft:#eef2ff;--color-primary-ink:#4338ca;--on-primary:#ffffff;--color-focus:#6366f1;--color-accent:#0d9488;--color-accent-soft:#ecfdf5;--color-danger:#dc2626;--color-success:#16a34a;--cat-calc-bg:#eef2ff;--cat-calc-ink:#4f46e5;--cat-cal-bg:#ecfdf5;--cat-cal-ink:#0d9488;--cat-combo-bg:#f5f3ff;--cat-combo-ink:#7c3aed;--cat-other-bg:#f0f9ff;--cat-other-ink:#0284c7;--radius-sm:8px;--radius:12px;--radius-lg:16px;--shadow-card:0 1px 2px rgba(24,24,27,0.04);--shadow-hover:0 6px 20px rgba(24,24,27,0.08);--maxw:1160px;--header-h:64px;--sidebar-w:236px;--bottom-nav-h:58px;--ad-bg-from:#fffbeb;--ad-bg-to:#fef3c7;--ad-title:#1e293b;--ad-accent:#b45309;--font-body:var(--font)}:root[data-theme="dark"]{color-scheme:dark;--color-bg:#0b0b0e;--color-surface:#16161a;--color-surface-2:#1f1f26;--color-text:#ededf0;--color-muted:#a1a1aa;--color-faint:#71717a;--color-border:#27272c;--color-border-strong:#3a3a42;--color-primary:#818cf8;--color-primary-hover:#a5b4fc;--color-primary-soft:rgba(129,140,248,0.14);--color-primary-ink:#c7d2fe;--color-focus:#818cf8;--on-primary:#0b0b14;--color-accent:#2dd4bf;--color-accent-soft:rgba(45,212,191,0.12);--color-danger:#f87171;--color-success:#4ade80;--cat-calc-bg:rgba(129,140,248,0.14);--cat-calc-ink:#a5b4fc;--cat-cal-bg:rgba(45,212,191,0.14);--cat-cal-ink:#5eead4;--cat-combo-bg:rgba(167,139,250,0.14);--cat-combo-ink:#c4b5fd;--cat-other-bg:rgba(56,189,248,0.14);--cat-other-ink:#7dd3fc;--shadow-card:0 1px 2px rgba(0,0,0,0.4);--shadow-hover:0 8px 24px rgba(0,0,0,0.5);--ad-bg-from:#1c1917;--ad-bg-to:#292524;--ad-title:#f5f5f4;--ad-accent:#fbbf24}*,*::before,*::after{box-sizing:border-box}html{background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);font-size:var(--text-base);line-height:1.6;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%}body{margin:0;min-height:100dvh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}img,svg{display:block;max-width:100%;height:auto}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4,h5,h6{margin:0;line-height:1.25;font-weight:650;letter-spacing:-0.01em}p{margin:0}ul,ol{margin:0;padding:0;list-style:none}:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px;border-radius:4px}::selection{background:var(--color-primary-soft);color:var(--color-primary-ink)}@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}}.skip-link{position:fixed;top:-100%;left:16px;z-index:var(--z-toast);background:var(--color-surface);color:var(--color-text);padding:8px 16px;border-radius:var(--radius-sm);border:1px solid var(--color-border);font-weight:500}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:var(--z-header);background:color-mix(in srgb,var(--color-surface) 82%,transparent);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--color-border);height:var(--header-h)}.header-inner{max-width:var(--maxw);margin:0 auto;padding:0 var(--space-5);height:100%;display:flex;align-items:center;gap:var(--space-5)}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:1.06rem;letter-spacing:-0.02em;color:var(--color-text);white-space:nowrap}.brand:hover{text-decoration:none}.brand-icon{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800;box-shadow:0 2px 8px color-mix(in srgb,var(--color-primary) 35%,transparent)}.site-nav{display:none;align-items:center;gap:2px}.site-nav a{color:var(--color-muted);font-weight:500;font-size:var(--text-sm);padding:7px 12px;border-radius:var(--radius-sm);text-decoration:none;transition:color var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease)}.site-nav a:hover{color:var(--color-text);background:var(--color-surface-2);text-decoration:none}.site-nav a[aria-current="page"]{color:var(--color-primary-ink);background:var(--color-primary-soft);font-weight:600}.header-search{display:none;align-items:center;gap:8px;margin-left:auto;height:38px;padding:0 12px;min-width:200px;max-width:300px;flex:1;background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:var(--radius-pill);color:var(--color-muted);transition:border-color var(--dur-fast),background var(--dur-fast)}.header-search:focus-within{border-color:var(--color-primary);background:var(--color-surface)}.header-search svg{flex-shrink:0;width:16px;height:16px}.header-search input{border:none;background:transparent;outline:none;width:100%;font:inherit;font-size:var(--text-sm);color:var(--color-text)}.header-search input::placeholder{color:var(--color-faint)}.header-actions{display:flex;align-items:center;gap:var(--space-1);margin-left:auto}.icon-btn,.search-toggle,.theme-toggle{width:38px;height:38px;border:1px solid transparent;background:transparent;color:var(--color-muted);border-radius:var(--radius-sm);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:16px;transition:background var(--dur-fast),color var(--dur-fast),border-color var(--dur-fast)}.icon-btn:hover,.search-toggle:hover,.theme-toggle:hover{background:var(--color-surface-2);color:var(--color-text);border-color:var(--color-border)}.search-toggle svg,.theme-toggle svg{width:18px;height:18px}.theme-toggle .icon-moon{display:none}[data-theme="dark"] .theme-toggle .icon-sun{display:none}[data-theme="dark"] .theme-toggle .icon-moon{display:block}.site-body{flex:1;display:flex;width:100%}.site-main{flex:1;min-width:0;padding:var(--space-6) var(--space-5);padding-bottom:calc(var(--bottom-nav-h) + var(--space-8))}.main-inner{max-width:var(--maxw);margin:0 auto;display:flex;flex-direction:column;gap:var(--space-6)}.site-sidebar{display:none}.hero{position:relative;overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:radial-gradient(120% 140% at 100% 0%,var(--color-primary-soft) 0%,transparent 45%),radial-gradient(120% 140% at 0% 100%,var(--color-accent-soft) 0%,transparent 45%),var(--color-surface);padding:clamp(28px,5vw,56px) clamp(20px,4vw,48px);text-align:center}.hero-badge{display:inline-flex;align-items:center;gap:6px;font-size:var(--text-xs);font-weight:600;color:var(--color-primary-ink);background:var(--color-primary-soft);border:1px solid color-mix(in srgb,var(--color-primary) 20%,transparent);padding:4px 12px;border-radius:var(--radius-pill);margin-bottom:var(--space-4)}.hero h1{font-size:clamp(1.9rem,4.5vw,3rem);letter-spacing:-0.03em;line-height:1.1}.hero-sub{color:var(--color-muted);margin:var(--space-4) auto 0;max-width:52ch;font-size:clamp(1rem,1.6vw,1.125rem)}.hero-search{display:flex;align-items:center;gap:8px;margin:var(--space-6) auto 0;max-width:520px;height:52px;padding:0 8px 0 18px;background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-pill);box-shadow:var(--shadow-card);transition:border-color var(--dur-fast),box-shadow var(--dur-fast)}.hero-search:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 4px var(--color-primary-soft)}.hero-search svg{flex-shrink:0;width:20px;height:20px;color:var(--color-faint)}.hero-search input{flex:1;border:none;outline:none;background:transparent;font:inherit;font-size:1rem;color:var(--color-text);min-width:0}.hero-search input::placeholder{color:var(--color-faint)}.hero-search .btn{height:38px}.hero-chips{display:flex;flex-wrap:wrap;gap:var(--space-2);justify-content:center;margin-top:var(--space-5)}.hero-chips a{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--color-border);border-radius:var(--radius-pill);background:var(--color-surface);color:var(--color-muted);font-size:var(--text-sm);font-weight:500;transition:border-color var(--dur-fast),color var(--dur-fast),background var(--dur-fast)}.hero-chips a:hover{text-decoration:none;color:var(--color-text);border-color:var(--color-border-strong);background:var(--color-surface-2)}.hero-chips .dot{width:8px;height:8px;border-radius:50%}.page-heading{margin-bottom:var(--space-1)}.page-heading h1{font-size:clamp(1.5rem,3vw,2rem);letter-spacing:-0.02em;margin-bottom:8px}.page-heading p{color:var(--color-muted);max-width:68ch;font-size:1.02rem}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-6);box-shadow:var(--shadow-card)}.card-title{font-size:var(--text-lg);font-weight:650;margin-bottom:var(--space-2)}.card-desc{color:var(--color-muted);font-size:var(--text-sm);margin-bottom:var(--space-4)}.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:var(--space-4)}.form-label{font-size:var(--text-sm);font-weight:500;color:var(--color-muted)}.form-input,.form-select{width:100%;padding:10px 13px;border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-text);font-size:var(--text-base);font-family:inherit;appearance:none;transition:border-color var(--dur-fast),box-shadow var(--dur-fast)}.form-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}.form-input::placeholder{color:var(--color-faint)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft)}.form-input[type="range"]{padding:0;border:none;box-shadow:none;accent-color:var(--color-primary);height:36px;background-image:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid transparent;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:600;font-family:inherit;cursor:pointer;transition:background var(--dur-fast) var(--ease),border-color var(--dur-fast),transform var(--dur-fast);text-decoration:none;line-height:1.2}.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--color-primary);color:var(--on-primary)}.btn-primary:hover{background:var(--color-primary-hover)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border-strong)}.btn-secondary:hover{background:var(--color-surface-2);border-color:var(--color-faint)}.result-box{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-5) var(--space-6);margin-top:var(--space-5)}.result-value{font-size:clamp(1.4rem,3vw,1.75rem);font-weight:700;color:var(--color-primary);letter-spacing:-0.02em}.result-label{font-size:var(--text-sm);color:var(--color-muted);margin-bottom:4px}.tool-grid{display:grid;gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(232px,1fr))}.tool-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-5);text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:10px;transition:border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease),transform var(--dur-base) var(--ease)}.tool-card:hover{text-decoration:none;border-color:var(--color-border-strong);box-shadow:var(--shadow-hover);transform:translateY(-2px)}.tool-card-icon{width:42px;height:42px;border-radius:11px;background:var(--color-surface-2);color:var(--color-text);display:grid;place-items:center;font-size:20px}.tool-card-title{font-weight:600;font-size:var(--text-base);letter-spacing:-0.01em}.tool-card-desc{font-size:var(--text-sm);color:var(--color-muted);line-height:1.45}@media (min-width:560px){.tool-card.is-wide{grid-column:span 2}}.tool-card.is-wide .tool-card-icon{width:52px;height:52px;font-size:24px}.tool-card.is-wide .tool-card-title{font-size:var(--text-lg)}[data-cat="calc"] .tool-card-icon{background:var(--cat-calc-bg);color:var(--cat-calc-ink)}[data-cat="cal"] .tool-card-icon{background:var(--cat-cal-bg);color:var(--cat-cal-ink)}[data-cat="combo"] .tool-card-icon{background:var(--cat-combo-bg);color:var(--cat-combo-ink)}[data-cat="other"] .tool-card-icon{background:var(--cat-other-bg);color:var(--cat-other-ink)}[data-cat="calc"] .dot{background:var(--cat-calc-ink)}[data-cat="cal"] .dot{background:var(--cat-cal-ink)}[data-cat="combo"] .dot{background:var(--cat-combo-ink)}[data-cat="other"] .dot{background:var(--cat-other-ink)}.home-section{display:flex;flex-direction:column;gap:var(--space-4)}.section-title{display:flex;align-items:center;gap:10px;font-size:var(--text-lg);font-weight:650;letter-spacing:-0.01em}.section-title .dot{width:9px;height:9px;border-radius:50%;background:var(--color-primary)}.section-title .count{font-size:var(--text-sm);font-weight:500;color:var(--color-faint)}.ad-slot,.coupon-slot{min-height:0;border-radius:var(--radius);overflow:hidden}.ad-slot:empty,.coupon-slot:empty{display:none}.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:var(--z-header);height:var(--bottom-nav-h);background:color-mix(in srgb,var(--color-surface) 88%,transparent);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-top:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-around;padding-bottom:env(safe-area-inset-bottom)}.bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--color-muted);font-size:var(--text-xs);text-decoration:none;padding:6px 18px;border-radius:var(--radius-sm);transition:color var(--dur-fast)}.bottom-nav a:hover{text-decoration:none}.bottom-nav a.active{color:var(--color-primary);font-weight:600}.bottom-nav-icon{font-size:19px;line-height:1}.site-footer{background:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--space-8) var(--space-5) var(--space-6);margin-top:auto}.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr;gap:var(--space-6)}.footer-brand{display:flex;flex-direction:column;gap:var(--space-3)}.footer-brand .brand{font-size:1.05rem}.footer-blurb{color:var(--color-muted);font-size:var(--text-sm);max-width:34ch;line-height:1.6}.footer-section h3{font-size:var(--text-sm);font-weight:650;margin-bottom:var(--space-3);color:var(--color-text)}.footer-section a{display:block;color:var(--color-muted);font-size:var(--text-sm);padding:4px 0;text-decoration:none}.footer-section a:hover{color:var(--color-text)}.footer-bottom{max-width:var(--maxw);margin:var(--space-7) auto 0;padding-top:var(--space-5);border-top:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);flex-wrap:wrap;font-size:var(--text-sm);color:var(--color-faint)}.footer-bottom a{color:var(--color-muted);text-decoration:none}.footer-bottom a:hover{color:var(--color-text)}.footer-legal{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap}.footer-sister a{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.breadcrumb{display:flex;align-items:center;gap:8px;font-size:var(--text-sm);color:var(--color-faint);margin-bottom:var(--space-2)}.breadcrumb a{color:var(--color-muted)}.breadcrumb a:hover{color:var(--color-text);text-decoration:none}.breadcrumb-sep{color:var(--color-border-strong)}.form-row{display:grid;grid-template-columns:1fr;gap:var(--space-4)}@media (min-width:480px){.form-row{grid-template-columns:1fr 1fr}}.field-grid{display:grid;grid-template-columns:1fr;gap:var(--space-3);margin-bottom:var(--space-4)}@media (min-width:640px){.field-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.field-grid{grid-template-columns:repeat(3,1fr)}}.field-grid .form-group{margin-bottom:0}.input-with-unit{display:flex;align-items:center;gap:8px}.input-with-unit .form-input{flex:1}.input-with-unit .unit-tag{color:var(--color-muted);font-size:var(--text-sm);white-space:nowrap}.btn-row{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-2)}.result-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--space-5)}.result-detail{margin-top:var(--space-5);border-top:1px solid var(--color-border);padding-top:var(--space-4);display:flex;flex-direction:column;gap:8px}.result-detail-row{display:flex;justify-content:space-between;gap:var(--space-4);font-size:var(--text-sm)}.result-detail-row dt{color:var(--color-muted)}.result-detail-row dd{margin:0;font-weight:600}.chips{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:var(--space-3) 0}.chip{padding:6px 14px;border:1px solid var(--color-border);border-radius:var(--radius-pill);background:var(--color-surface);color:var(--color-muted);font-size:var(--text-sm);cursor:pointer;font-family:inherit;transition:border-color var(--dur-fast),background var(--dur-fast),color var(--dur-fast)}.chip:hover{border-color:var(--color-border-strong);color:var(--color-text)}.chip.active{background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary-ink);font-weight:600}.info-box{display:flex;gap:12px;align-items:flex-start;background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-4) var(--space-5);font-size:var(--text-sm);color:var(--color-muted);line-height:1.65}.discover-hero{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-5);background:radial-gradient(120% 140% at 100% 0%,var(--color-primary-soft) 0%,transparent 50%),var(--color-surface)}.dh-text h2{margin:0 0 var(--space-2);font-size:var(--text-xl);letter-spacing:-0.02em}.dh-text p{margin:0;color:var(--color-muted);max-width:46ch}.dh-btns{display:flex;gap:var(--space-2)}@media (min-width:768px){.site-nav{display:flex}.bottom-nav{display:none}.site-main{padding-bottom:var(--space-8)}.footer-inner{grid-template-columns:repeat(4,1fr)}.footer-brand{grid-column:1 / -1}}@media (min-width:900px){.header-search{display:flex}.search-toggle{display:none}.header-actions{margin-left:var(--space-1)}}@media (min-width:1024px){.site-body{max-width:var(--maxw);margin:0 auto;width:100%;padding:0 var(--space-5)}.site-sidebar{display:block;width:var(--sidebar-w);flex-shrink:0;padding:var(--space-7) var(--space-5) var(--space-5) 0;position:sticky;top:var(--header-h);max-height:calc(100dvh - var(--header-h));overflow-y:auto}.sidebar-group{margin-bottom:var(--space-6)}.sidebar-title{display:flex;align-items:center;gap:8px;font-size:var(--text-xs);font-weight:650;letter-spacing:0.04em;text-transform:uppercase;color:var(--color-faint);margin-bottom:var(--space-3);padding-left:12px}.sidebar-title .dot{width:8px;height:8px;border-radius:50%;background:var(--color-primary)}.sidebar-nav{display:flex;flex-direction:column;gap:1px}.sidebar-nav a{position:relative;display:block;padding:7px 12px;font-size:var(--text-sm);color:var(--color-muted);border-radius:var(--radius-sm);text-decoration:none;transition:background var(--dur-fast),color var(--dur-fast)}.sidebar-nav a:hover{background:var(--color-surface-2);color:var(--color-text);text-decoration:none}.sidebar-nav a.active{background:var(--color-primary-soft);color:var(--color-primary-ink);font-weight:600}.sidebar-nav a.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:16px;border-radius:0 3px 3px 0;background:var(--color-primary)}.site-main{padding-left:var(--space-6)}}.text-center{text-align:center}.text-muted{color:var(--color-muted)}.text-sm{font-size:var(--text-sm)}.mt-2{margin-top:var(--space-2)}.mt-4{margin-top:var(--space-4)}.mb-2{margin-bottom:var(--space-2)}.mb-4{margin-bottom:var(--space-4)}.hidden{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}