:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-light: #dbeafe;--color-text: #172033;--color-text-muted: #64748b;--color-bg: #ffffff;--color-bg-page: #f6f8fb;--color-bg-secondary: #f8fafc;--color-border: #dbe3ef;--color-error: #dc2626;--color-error-bg: #fef2f2;--color-success: #16a34a;--color-success-bg: #f0fdf4;--color-warning: #d97706;--color-warning-bg: #fffbeb;--color-ad-bg: #f3f4f6;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow-md: 0 8px 24px rgba(15, 23, 42, .08);--font-sans: "Pretendard", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--container-max: 1200px;--container-px: clamp(16px, 4vw, 32px)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;overflow-x:hidden}body{font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--color-text);background:var(--color-bg-page);min-height:100dvh;display:flex;flex-direction:column;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}:focus-visible{outline:3px solid rgba(37,99,235,.28);outline-offset:2px}.container{width:100%;max-width:var(--container-max);margin-inline:auto;padding-inline:var(--container-px)}main{flex:1;padding-block:var(--spacing-xl) var(--spacing-2xl)}h1{font-size:clamp(1.5rem,4vw,2rem);font-weight:700;line-height:1.3}h2{font-size:clamp(1.2rem,3vw,1.5rem);font-weight:600;line-height:1.4}h3{font-size:1.1rem;font-weight:600}h4{font-size:1rem;font-weight:600}p{margin-bottom:var(--spacing-md)}p:last-child{margin-bottom:0}small{color:var(--color-text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);min-height:44px;padding:10px 18px;border-radius:var(--radius-md);font-size:.95rem;font-weight:500;border:1px solid transparent;transition:background .15s,border-color .15s,color .15s,opacity .15s;cursor:pointer;line-height:1.2}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background:var(--color-primary-dark);text-decoration:none}.btn-secondary{background:var(--color-bg-secondary);color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary);text-decoration:none}.btn-danger{background:var(--color-error-bg);color:var(--color-error);border-color:var(--color-error)}.btn-danger:hover{background:var(--color-error);color:#fff;text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-lg{padding:14px 28px;font-size:1rem}.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:var(--spacing-md)}label{font-size:.9rem;font-weight:500;color:var(--color-text)}input[type=text],input[type=number],select{min-height:44px;padding:9px 12px;border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:.95rem;font-family:inherit;color:var(--color-text);background:var(--color-bg);transition:border-color .15s;width:100%}input:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.alert{padding:var(--spacing-md);border-radius:var(--radius-md);font-size:.9rem;display:flex;gap:var(--spacing-sm);align-items:flex-start}.alert-error{background:var(--color-error-bg);color:var(--color-error);border:1px solid #fca5a5}.alert-success{background:var(--color-success-bg);color:var(--color-success);border:1px solid #86efac}.alert-warning{background:var(--color-warning-bg);color:var(--color-warning);border:1px solid #fcd34d}.site-header{background:var(--color-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.site-header .container{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:var(--spacing-md)}.site-logo{font-size:1.1rem;font-weight:700;color:var(--color-primary);text-decoration:none;white-space:nowrap}.site-logo:hover{text-decoration:none}.site-nav{display:flex;gap:var(--spacing-sm);list-style:none;flex-wrap:wrap;justify-content:flex-end}.site-nav a{color:var(--color-text-muted);font-size:.9rem;font-weight:500;display:inline-flex;align-items:center;min-height:40px;padding-inline:10px;border-radius:var(--radius-md)}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--color-primary);background:var(--color-primary-light);text-decoration:none}.site-footer{background:var(--color-bg);border-top:1px solid var(--color-border);padding-block:var(--spacing-xl);font-size:.85rem;color:var(--color-text-muted)}.site-footer .container{display:flex;flex-direction:column;gap:var(--spacing-md);align-items:center;text-align:center}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--spacing-md);list-style:none}.footer-links a{color:var(--color-text-muted)}.footer-links a:hover{color:var(--color-text);text-decoration:underline}.breadcrumb{padding-block:var(--spacing-sm);font-size:.85rem;color:var(--color-text-muted)}.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px;align-items:center}.breadcrumb li+li:before{content:"›";margin-right:4px;color:var(--color-border)}.breadcrumb a{color:var(--color-text-muted)}.breadcrumb a:hover{color:var(--color-primary);text-decoration:underline}.breadcrumb [aria-current=page]{color:var(--color-text)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:var(--spacing-md)}.tool-card{display:flex;flex-direction:column;min-height:150px;padding:var(--spacing-lg);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);text-decoration:none;color:var(--color-text);transition:box-shadow .15s,border-color .15s,transform .15s}.tool-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none}.tool-card-title{font-weight:700;margin-bottom:var(--spacing-xs)}.tool-card-desc{font-size:.875rem;color:var(--color-text-muted)}.tool-card-badge{display:inline-block;width:fit-content;margin-top:auto;padding:2px 8px;background:var(--color-primary-light);color:var(--color-primary-dark);border-radius:999px;font-size:.75rem;font-weight:500}.ad-slot{background:var(--color-ad-bg);border:1px dashed var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-xl);text-align:center;color:var(--color-text-muted);font-size:.8rem;margin-block:var(--spacing-xl);min-height:100px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-xs)}.page-hero{margin-bottom:var(--spacing-xl);padding-block:var(--spacing-2xl)}.page-hero h1{margin-bottom:var(--spacing-sm)}.page-hero p{color:var(--color-text-muted);font-size:1rem}.home-hero{text-align:center}.home-hero p{max-width:640px;margin-inline:auto;font-size:1.05rem}.hero-badges{display:flex;justify-content:center;gap:var(--spacing-sm);margin-top:var(--spacing-lg);flex-wrap:wrap}.hero-badges span{display:inline-flex;align-items:center;min-height:36px;padding:6px 12px;border:1px solid var(--color-border);border-radius:999px;background:var(--color-bg);color:var(--color-text-muted);font-size:.9rem}.content-section{margin-bottom:var(--spacing-2xl)}.content-section h2{margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:2px solid var(--color-primary-light)}.trust-section{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl)}.trust-grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--spacing-md);margin-top:var(--spacing-md)}.trust-grid li{padding:var(--spacing-md);background:var(--color-bg-secondary);border-radius:var(--radius-md);border:1px solid var(--color-border)}.trust-grid strong{display:block;margin-bottom:4px}.trust-grid span{font-size:.875rem;color:var(--color-text-muted)}.faq-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}details.faq-item{border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}summary.faq-question{padding:var(--spacing-md);font-weight:500;cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none}summary.faq-question:after{content:"+";font-size:1.2rem;color:var(--color-primary)}details[open] summary.faq-question:after{content:"–"}.faq-answer{padding:0 var(--spacing-md) var(--spacing-md);font-size:.9rem;color:var(--color-text-muted);border-top:1px solid var(--color-border)}.related-tools{margin-block:var(--spacing-xl)}.related-tools h2{margin-bottom:var(--spacing-md)}@media(max-width:640px){.site-header .container{min-height:auto;padding-block:var(--spacing-sm);align-items:flex-start;flex-direction:column}.site-nav{justify-content:flex-start;gap:var(--spacing-xs)}.site-nav a{min-height:36px;padding-inline:8px}main{padding-block:var(--spacing-lg)}.tool-grid{grid-template-columns:1fr}.page-hero{padding-block:var(--spacing-xl)}.trust-section{padding:var(--spacing-lg)}}@media(max-width:480px){.tool-grid{grid-template-columns:1fr}.btn,.action-row .btn{width:100%}}.dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-2xl) var(--spacing-xl);text-align:center;cursor:pointer;transition:border-color .2s,background .2s;background:var(--color-bg-secondary);display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);position:relative}.dropzone:hover,.dropzone--active{border-color:var(--color-primary);background:#eef5ff}.dropzone:focus-visible{border-color:var(--color-primary)}.dropzone--disabled{cursor:not-allowed;opacity:.6}.dropzone__input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}.dropzone__icon{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:var(--color-primary-light);font-size:1.8rem;color:var(--color-primary)}.dropzone__label{font-size:1rem;font-weight:500;color:var(--color-text)}.dropzone__hint{font-size:.85rem;color:var(--color-text-muted)}.tool-wrapper{max-width:960px;margin-inline:auto}.tool-box{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg);box-shadow:var(--shadow-sm)}.tool-wrapper:before{content:"1 업로드  /  2 옵션 설정  /  3 처리  /  4 결과 다운로드";display:block;margin-bottom:var(--spacing-md);padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-text-muted);font-size:.875rem;text-align:center}.file-info{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:.9rem;min-width:0}.file-info__name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}.file-info__size{color:var(--color-text-muted);white-space:nowrap}.file-info__btn{background:none;border:none;color:var(--color-text-muted);cursor:pointer;min-width:44px;min-height:44px;padding:4px;border-radius:var(--radius-sm);line-height:1;font-size:1.1rem}.file-info__btn:hover{color:var(--color-error);background:var(--color-error-bg)}.options-panel{display:flex;flex-direction:column;gap:var(--spacing-md);padding:var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-secondary)}.options-row{display:flex;gap:var(--spacing-md);align-items:flex-end;flex-wrap:wrap}.options-row .form-group{flex:1;min-width:120px;margin-bottom:0}.slider-wrapper{display:flex;align-items:center;gap:var(--spacing-md)}.slider-wrapper input[type=range]{flex:1;min-height:44px;height:44px;accent-color:var(--color-primary);cursor:pointer}.slider-value{font-size:.9rem;font-weight:600;min-width:36px;text-align:right;color:var(--color-primary)}.processing-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);padding:var(--spacing-2xl);color:var(--color-text-muted);text-align:center}.spinner{width:40px;height:40px;border:3px solid var(--color-primary-light);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.result-panel{display:flex;flex-direction:column;gap:var(--spacing-md)}.result-summary{display:grid;gap:var(--spacing-sm);padding:var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-secondary)}.result-summary__title{font-weight:700}.size-comparison{display:flex;align-items:center;gap:var(--spacing-md);font-size:.9rem;flex-wrap:wrap;min-width:0}.size-comparison__original{color:var(--color-text-muted);text-decoration:line-through}.size-comparison__arrow{color:var(--color-text-muted)}.size-comparison__result{font-weight:600;color:var(--color-success)}.size-comparison__percent{background:var(--color-success-bg);color:var(--color-success);padding:2px 8px;border-radius:999px;font-size:.8rem;font-weight:600}.size-comparison__bigger{color:var(--color-warning)}.preview-pair{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md)}@media(max-width:560px){.preview-pair{grid-template-columns:1fr}}.preview-item{display:flex;flex-direction:column;gap:var(--spacing-xs)}.preview-item__label{font-size:.8rem;font-weight:500;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.preview-item img{width:100%;height:clamp(180px,28vw,260px);object-fit:contain;background:repeating-conic-gradient(#e5e7eb 0% 25%,#f9fafb 0% 50%) 0 0 / 16px 16px;border-radius:var(--radius-md);border:1px solid var(--color-border)}.action-row{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.action-row .btn{min-width:140px}.file-list{display:flex;flex-direction:column;gap:var(--spacing-sm);max-height:320px;overflow-y:auto;padding-right:var(--spacing-xs)}.file-list-item{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:.875rem;min-width:0}.file-list-item__name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.file-list-item__size{color:var(--color-text-muted);white-space:nowrap}.file-list-item--done{border-color:var(--color-success)}.file-list-item--error{border-color:var(--color-error);background:var(--color-error-bg)}.status-badge{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;font-size:.7rem;font-weight:700}.status-badge--done{background:var(--color-success-bg);color:var(--color-success)}.status-badge--error{background:var(--color-error-bg);color:var(--color-error)}.status-badge--pending{background:var(--color-bg);color:var(--color-text-muted);border:1px solid var(--color-border)}.crop-container{position:relative;display:inline-block;user-select:none;overflow:hidden;border-radius:var(--radius-md);border:1px solid var(--color-border);max-width:100%}.crop-container img{display:block;max-width:100%;height:auto}.crop-overlay{position:absolute;border:2px solid var(--color-primary);background:#2563eb14;cursor:move;box-shadow:0 0 0 9999px #00000059}.rotate-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:var(--spacing-sm)}.rotate-btn{display:flex;flex-direction:column;align-items:center;gap:6px;padding:var(--spacing-md) var(--spacing-sm);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:background .15s,border-color .15s;font-size:.85rem;font-weight:500}.rotate-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.rotate-btn__icon{font-size:1.5rem}.format-tabs{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.format-tab{min-height:44px;padding:8px 16px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);font-size:.9rem;font-weight:500;cursor:pointer;transition:background .15s,border-color .15s,color .15s}.format-tab:hover{border-color:var(--color-primary);color:var(--color-primary)}.format-tab--active{border-color:var(--color-primary);background:var(--color-primary);color:#fff}.pattern-preview{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--spacing-sm) var(--spacing-md);font-family:var(--font-mono);font-size:.875rem;color:var(--color-text-muted);overflow-wrap:anywhere}@media(max-width:640px){.tool-box{padding:var(--spacing-md)}.tool-wrapper:before{text-align:left;line-height:1.7}.dropzone{padding:var(--spacing-xl) var(--spacing-md)}.file-info,.size-comparison{align-items:flex-start}.file-info__size{white-space:normal}.options-row{flex-direction:column;align-items:stretch}.options-row .form-group{width:100%}.slider-wrapper{gap:var(--spacing-sm)}}