:root{--primary: #4361ee;--primary-dark: #3a0ca3;--primary-darker: #2d0a6e;--secondary: #f72585;--accent: #4cc9f0;--success: #06d6a0;--warning: #ffd166;--danger: #ef476f;--dark: #0a0a1f;--dark-light: #12123a;--gray: #64748b;--text: #c8cfe0;--text-light: #8d99ae;--light: #ffffff;--border: rgba(255, 255, 255, .08);--radius: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 50px;--gradient-primary: linear-gradient(135deg, #4361ee, #3a0ca3);--gradient-accent: linear-gradient(135deg, #f72585, #7209b7);--gradient-success: linear-gradient(135deg, #06d6a0, #0284c7);--shadow-primary: 0 5px 15px rgba(67, 97, 238, .25);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .25);--shadow-xl: 0 12px 48px rgba(0, 0, 0, .3);--transition: all .3s ease}*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-gradient);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}.container{max-width:1140px;margin:0 auto;padding:0 20px}.breadcrumb-nav{background:hsla(0,0%,100%,.03);border-bottom:1px solid var(--border);padding:12px 0;font-size:.875rem}.breadcrumb-nav a{color:var(--primary)}.breadcrumb-nav a:hover{text-decoration:underline}.breadcrumb-nav .sep{color:var(--text-light);margin:0 8px}.breadcrumb-nav .cur{color:var(--text-light)}.hero{min-height:auto;padding:80px 0;position:relative;overflow:hidden;background:var(--hero-bg);text-align:center}.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;margin-bottom:15px;background:var(--hero-title-grad);-webkit-background-clip:text;-webkit-text-fill-color:rgba(0,0,0,0);background-clip:text;line-height:1.2}.hero p{font-size:1.1rem;color:var(--text-light);max-width:700px;margin:0 auto}.tool-wrapper{margin-top:0;position:relative;z-index:10;padding:40px 0}.tool-card{background:hsla(0,0%,100%,.02);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:var(--radius-xl);padding:3rem 2rem;border:1px solid var(--border);box-shadow:var(--shadow-xl);position:relative;max-width:900px;margin:0 auto}.upload-zone{border:2px dashed rgba(67,97,238,.5);border-radius:var(--radius-lg);padding:4rem 2rem;text-align:center;cursor:pointer;transition:var(--transition);background:rgba(67,97,238,.05)}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary);background:rgba(67,97,238,.12)}.upload-zone .icon-circle{width:80px;height:80px;background:var(--gradient-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;color:#fff;font-size:2rem;box-shadow:0 10px 30px rgba(67,97,238,.4)}.upload-zone h3{font-size:1.5rem;margin-bottom:10px;color:var(--light);font-weight:700}.upload-zone .sub{color:var(--text-light);font-size:1rem;margin-bottom:20px}.upload-feats{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;margin-bottom:25px;font-size:.9rem;color:var(--text-light)}.upload-feats span{display:flex;align-items:center;gap:8px}.upload-feats i{color:var(--success)}.btn-upload{background:var(--gradient-primary);color:#fff;border:none;padding:10px 24px;border-radius:50px;font-weight:600;font-size:.9rem;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:var(--transition);box-shadow:var(--shadow-primary)}.btn-upload:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(67,97,238,.4);color:#fff}.file-info{display:none;align-items:center;gap:12px;padding:14px 18px;background:rgba(6,214,160,.08);border:1px solid var(--success);border-radius:var(--radius);margin-top:1rem}.file-info.visible{display:flex;animation:slideUp .4s ease}.file-info .f-icon{width:44px;height:44px;background:var(--gradient-success);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;flex-shrink:0}.file-info .f-name{font-weight:700;color:var(--light);font-size:.9rem;word-break:break-all}.file-info .f-meta{display:flex;gap:12px;color:var(--text-light);font-size:.8rem;margin-top:2px}.progress-wrap{display:none;background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-top:1rem}.progress-wrap.visible{display:block;animation:slideUp .4s ease}.progress-wrap h4{text-align:center;margin-bottom:12px;font-size:.95rem;color:var(--light)}.progress-bar-track{height:8px;background:hsla(0,0%,100%,.06);border-radius:4px;overflow:hidden;margin-bottom:12px}.progress-bar-fill{height:100%;width:0%;background:var(--gradient-primary);border-radius:4px;transition:width .3s}.progress-info{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-light)}.stat-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:10px;margin-top:12px}.stat-box{background:hsla(0,0%,100%,.05);border:1px solid var(--border);color:var(--light);border-radius:10px;padding:14px;text-align:center;transition:var(--transition)}.stat-box:hover{transform:translateY(-3px);border-color:var(--primary)}.stat-box .s-icon{font-size:1.4rem;opacity:.85;margin-bottom:6px}.stat-box .s-val{font-size:1.3rem;font-weight:800;line-height:1}.stat-box .s-lbl{font-size:.7rem;opacity:.8;margin-top:3px;text-transform:uppercase;letter-spacing:.5px}.results-panel{display:none;margin-top:1.5rem;animation:slideUp .4s ease}.results-panel.visible{display:block}.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;flex-wrap:wrap;gap:8px}.panel-header h3{margin:0;font-size:1rem;color:var(--light)}.filter-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.filter-chip{padding:5px 12px;border:1px solid var(--border);border-radius:20px;background:rgba(0,0,0,0);color:var(--text-light);cursor:pointer;transition:var(--transition);font-size:.78rem;font-weight:500}.filter-chip:hover{border-color:var(--primary);color:var(--primary)}.filter-chip.active{background:var(--gradient-primary);color:#fff;border-color:rgba(0,0,0,0)}.email-list{max-height:380px;overflow-y:auto;border:1px solid var(--border);border-radius:var(--radius);background:hsla(0,0%,100%,.02)}.email-row{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--border);transition:background .15s}.email-row:last-child{border-bottom:none}.email-row:hover{background:hsla(0,0%,100%,.04)}.email-idx{width:24px;height:24px;border-radius:50%;background:hsla(0,0%,100%,.06);display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;color:var(--text-light);flex-shrink:0}.email-addr{flex:1;min-width:0;font-size:.9rem;color:var(--light);word-break:break-all}.email-meta{font-size:.75rem;color:var(--text-light);white-space:nowrap}.email-copy-btn{background:none;border:none;color:var(--text-light);cursor:pointer;padding:4px 6px;border-radius:4px;transition:var(--transition);flex-shrink:0}.email-copy-btn:hover{background:hsla(0,0%,100%,.08);color:var(--primary)}#emptyState{text-align:center;padding:40px 16px;display:none}#emptyState.visible{display:block}#emptyState i{font-size:2.5rem;color:var(--text-light);margin-bottom:10px}#emptyState h4{color:var(--light)}.btn-group{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.btn-act{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border:none;border-radius:8px;font-weight:600;font-size:.82rem;cursor:pointer;transition:var(--transition);color:#fff}.btn-act:disabled{opacity:.4;cursor:not-allowed}.btn-act:hover:not(:disabled){transform:translateY(-2px)}.btn-act.primary{background:var(--gradient-primary);box-shadow:var(--shadow-primary)}.btn-act.success{background:var(--gradient-success)}.btn-act.secondary{background:hsla(0,0%,100%,.08);border:1px solid var(--border);color:var(--text)}.btn-act.secondary:hover{background:hsla(0,0%,100%,.12)}.empty-msg{text-align:center;padding:40px 20px;display:none}.empty-msg.show{display:block}.empty-msg i{font-size:2.2rem;color:var(--text-light);margin-bottom:12px;display:block}.empty-msg h4{color:var(--light);margin-bottom:3px;font-size:1rem}.empty-msg p{color:var(--text-light);font-size:.82rem}.content-section{padding:40px 0}.content-card{background:hsla(0,0%,100%,.03);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;margin-bottom:24px;backdrop-filter:blur(10px);max-width:900px;margin-left:auto;margin-right:auto}.content-card h2{font-size:1.35rem;margin-bottom:16px;color:var(--light)}.content-card .section-title{font-size:2rem;text-align:center;margin-bottom:30px;color:var(--light)}.content-card .section-subtitle{text-align:center;max-width:800px;margin:0 auto 40px;font-size:1.1rem;color:var(--text-light)}.content-card h3{font-size:1.1rem;margin-bottom:10px;color:var(--primary)}.content-card p,.content-card li{color:var(--text);margin-bottom:12px;line-height:1.8}.content-card ul{padding-left:20px}.content-card ul li{margin-bottom:6px}.usage-steps{display:grid;grid-template-columns:repeat(auto-fit, minmax(180px, 1fr));gap:16px;margin-top:20px}.usage-step{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:12px;padding:1.5rem;text-align:center;transition:var(--transition)}.usage-step:hover{border-color:var(--primary);transform:translateY(-3px)}.usage-step .u-icon{width:46px;height:46px;border-radius:10px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;margin:0 auto 10px;color:#fff;font-size:1.2rem}.usage-step h4{font-size:.9rem;color:var(--light);margin-bottom:4px}.usage-step p{font-size:.82rem;color:var(--text-light);margin:0}.feature-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:20px;margin-top:24px}.feature-card{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:14px;padding:1.8rem;transition:var(--transition);display:flex;flex-direction:column}.feature-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,.15)}.feature-card h3{font-size:1.05rem;margin-bottom:12px;color:var(--light);display:flex;align-items:center;gap:8px;flex-shrink:0}.feature-card h3 i{font-size:1.2rem}.feature-card p{font-size:.88rem;color:var(--text-light);line-height:1.7;margin:0;flex:1}.case-studies h2{margin-bottom:8px}.case-studies>p{color:var(--text-light);margin-bottom:18px}.case-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(270px, 1fr));gap:14px}.case-card{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:12px;padding:1.2rem;transition:var(--transition)}.case-card:hover{border-color:var(--primary)}.case-card .case-number{width:30px;height:30px;border-radius:50%;background:var(--gradient-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;margin-bottom:6px}.case-card h3{font-size:.9rem;color:var(--light);margin-bottom:4px}.case-card .case-detail{font-size:.82rem;color:var(--text-light);margin-bottom:3px;line-height:1.5}.faq-section h2{margin-bottom:8px}.faq-section>p{color:var(--text-light);margin-bottom:18px}.faq-item{border:1px solid var(--border);border-radius:10px;margin-bottom:6px;overflow:hidden;background:hsla(0,0%,100%,.03)}.faq-item.open .faq-q i{transform:rotate(180deg)}.faq-item.open .faq-a{max-height:400px}.faq-q{display:flex;justify-content:space-between;align-items:center;width:100%;padding:12px 16px;border:none;cursor:pointer;font-weight:600;font-size:.85rem;color:var(--light);text-align:left;transition:var(--transition);background:rgba(0,0,0,0)}.faq-q:hover{background:hsla(0,0%,100%,.06)}.faq-q i{transition:transform .3s;color:var(--primary)}.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}.faq-a-inner{padding:0 16px 14px;font-size:.85rem;color:var(--text-light);line-height:1.7}.related-tools{padding:40px 20px;background:var(--bg-body);max-width:900px;margin-left:auto;margin-right:auto}.related-tools h2{font-size:1.35rem;margin-bottom:8px;color:var(--light)}.related-tools>p{color:var(--gray);margin-bottom:18px}.related-grid{display:grid;grid-template-columns:repeat(5, 1fr);gap:14px}.related-card{background:hsla(0,0%,100%,.03);border:1px solid var(--border);border-radius:12px;padding:1.2rem;display:flex;align-items:flex-start;gap:10px;transition:var(--transition);text-decoration:none}.related-card:hover{border-color:var(--primary);box-shadow:0 4px 16px rgba(67,97,238,.1);transform:translateY(-2px)}.related-card .r-icon{width:38px;height:38px;border-radius:8px;background:rgba(67,97,238,.12);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1rem;flex-shrink:0}.related-card .r-info{flex:1;min-width:0}.related-card .r-name{font-weight:600;font-size:.82rem;color:var(--light);display:block;margin-bottom:2px}.related-card .r-desc{font-size:.75rem;color:var(--text-light);display:block}.privacy-note{background:rgba(67,97,238,.06);border:1px solid rgba(67,97,238,.12);border-radius:12px;padding:1.2rem;display:flex;align-items:flex-start;gap:14px;max-width:900px;margin:0 auto 24px}.privacy-note i{font-size:1.3rem;color:var(--primary);flex-shrink:0;margin-top:2px}.privacy-note h4{font-size:1rem;color:var(--light);margin-bottom:4px}.privacy-note p{font-size:.85rem;color:var(--text-light);margin:0;line-height:1.6}.loading-overlay{position:fixed;inset:0;background:rgba(10,10,31,.96);display:none;align-items:center;justify-content:center;z-index:9999;backdrop-filter:blur(8px)}.loading-overlay.active{display:flex}.loader-box{text-align:center}.loader-spinner{width:56px;height:56px;border:4px solid hsla(0,0%,100%,.08);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}.loader-box h4{color:var(--light);margin-bottom:4px;font-size:1rem}.loader-box p{color:var(--text-light);font-size:.85rem}.loader-bar{width:180px;height:5px;background:hsla(0,0%,100%,.06);border-radius:3px;margin:12px auto 0;overflow:hidden}.loader-bar-fill{height:100%;width:30%;background:var(--gradient-primary);border-radius:3px;animation:loaderAnim 1.5s ease-in-out infinite}@keyframes loaderAnim{0%{width:15%;margin-left:0}50%{width:60%;margin-left:20%}100%{width:15%;margin-left:80%}}.notif{position:fixed;top:20px;right:20px;z-index:10000;min-width:280px;max-width:400px;background:var(--dark-light);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;box-shadow:var(--shadow-xl);display:none;align-items:center;gap:8px;border-left:4px solid var(--success);color:var(--light);font-size:.82rem}.notif.show{display:flex;animation:slideIn .4s ease}.notif.n-err{border-left-color:var(--danger)}.notif.n-info{border-left-color:var(--primary)}.notif.n-warn{border-left-color:var(--warning)}.notif i{font-size:1.1rem;flex-shrink:0}@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}#app-content[data-theme=dark]{--bg-gradient: linear-gradient(160deg, #0a0a1f 0%, #12123a 50%, #0a0a1f 100%);--bg-body: #0a0a1f;--bg-card: rgba(255, 255, 255, .02);--text: #c8cfe0;--text-light: #8d99ae;--border: rgba(255, 255, 255, .08);--shadow: 0 4px 24px rgba(0, 0, 0, .3);--primary-light: rgba(67, 97, 238, .12);--dark: #f1f5f9;--gray: #94a3b8;--light: #ffffff;--shadow-primary: 0 5px 15px rgba(67, 97, 238, .25);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .25);--shadow-xl: 0 12px 48px rgba(0, 0, 0, .3);--gradient-primary: linear-gradient(135deg, #4361ee, #3a0ca3);--gradient-accent: linear-gradient(135deg, #f72585, #7209b7);--gradient-success: linear-gradient(135deg, #06d6a0, #0284c7);--hero-bg: #0a0a1f;--hero-title-grad: linear-gradient(135deg, #fff 30%, var(--accent) 100%)}#app-content[data-theme=light]{--bg-gradient: linear-gradient(160deg, #f0f4ff 0%, #e8ffe8 40%, #f5f0ff 100%);--bg-body: #f8fafc;--bg-card: #ffffff;--text: #475569;--text-light: #94a3b8;--border: #e2e8f0;--shadow: 0 4px 24px rgba(67, 97, 238, 0.08);--primary-light: rgba(67, 97, 238, 0.08);--dark: #1a1a2e;--gray: #475569;--light: #1e293b;--shadow-primary: 0 5px 15px rgba(67, 97, 238, .18);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .1);--shadow-xl: 0 12px 48px rgba(0, 0, 0, .12);--gradient-primary: linear-gradient(135deg, #4361ee, #3a0ca3);--gradient-accent: linear-gradient(135deg, #f72585, #7209b7);--gradient-success: linear-gradient(135deg, #06d6a0, #0284c7);--hero-bg: #f8fafc;--hero-title-grad: linear-gradient(135deg, #1e293b 30%, var(--accent) 100%)}#floatThemeToggle{position:fixed;top:100px;right:20px;width:48px;height:48px;background:var(--bg-card);border:1px solid var(--border);border-radius:50%;cursor:pointer;z-index:1000;display:flex;align-items:center;justify-content:center;color:var(--text);font-size:1.2rem;box-shadow:var(--shadow);transition:all .3s}#floatThemeToggle:hover{background:var(--primary);color:#fff;border-color:var(--primary)}#backToTop{position:fixed;bottom:30px;right:20px;width:48px;height:48px;background:var(--primary);border:none;border-radius:50%;cursor:pointer;z-index:1000;display:none;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;box-shadow:0 10px 20px rgba(0,0,0,.2);transition:all .3s}#backToTop:hover{background:var(--primary-dark);transform:translateY(-3px)}#backToTop.show{display:flex}@media(max-width: 991px){.related-grid{grid-template-columns:repeat(3, 1fr)}}@media(max-width: 768px){.tool-card{padding:1.2rem}.stat-grid{grid-template-columns:1fr 1fr}.feature-grid{grid-template-columns:1fr}.upload-zone{padding:2.5rem 1.2rem}.hero{padding:60px 0}}@media(max-width: 575px){.usage-steps{grid-template-columns:1fr}.case-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:repeat(2, 1fr)}.content-card{padding:1.2rem}.tool-card{padding:1rem}.hero h1{font-size:clamp(1.6rem,8vw,2.4rem)}.btn-act{width:100%;justify-content:center}.notif{right:10px;left:10px;min-width:0;max-width:none}.email-row{flex-wrap:wrap}.email-meta{display:none}#floatThemeToggle{width:42px;height:42px;right:14px}#backToTop{width:42px;height:42px;right:14px}}@media(prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}}