:root{--primary:#dc2626;--primary-light:#ef4444;--primary-dim:rgba(220,38,38,0.15);--primary-border:rgba(220,38,38,0.3);--accent:#06b6d4;--bg:#08080f;--surface:#101018;--card:#181828;--card-hover:#20203a;--success:#10b981;--error:#ef4444;--text:#f3f4f6;--text-muted:#9ca3af;--text-dim:#6b7280;--border:rgba(255,255,255,0.07);--radius:12px;--radius-lg:20px;--radius-xl:28px;--shadow:0 4px 24px rgba(0,0,0,0.4);--shadow-primary:0 0 40px rgba(220,38,38,0.3)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:16px;line-height:1.6;min-height:100vh;overflow-x:hidden}
.nav{position:sticky;top:0;z-index:100;background:rgba(8,8,15,0.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:0 24px}.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px}.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:20px;color:var(--text)}.nav-logo span{background:linear-gradient(135deg,#f87171,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;align-items:center;gap:4px}.nav-links a{color:var(--text-muted);text-decoration:none;font-size:14px;font-weight:500;padding:6px 12px;border-radius:8px;transition:all .2s}.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--primary-dim)}.nav-cta{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border:none;padding:8px 18px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap;transition:all .2s}.nav-cta:hover{transform:translateY(-1px);box-shadow:var(--shadow-primary)}
.hero{padding:72px 24px 60px;text-align:center;position:relative;overflow:hidden}.hero::before{content:'';position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(220,38,38,0.1) 0%,transparent 70%);pointer-events:none}.hero-badge{display:inline-flex;align-items:center;gap:6px;background:var(--primary-dim);border:1px solid var(--primary-border);color:#fca5a5;font-size:13px;font-weight:600;padding:5px 14px;border-radius:100px;margin-bottom:24px;text-transform:uppercase;letter-spacing:.5px}.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.1;margin-bottom:16px;letter-spacing:-1px}.hero h1 span{background:linear-gradient(135deg,#f87171 0%,#06b6d4 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:clamp(1rem,2vw,1.2rem);color:var(--text-muted);max-width:560px;margin:0 auto 36px}.hero-trust{display:flex;align-items:center;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:28px}.trust-item{display:flex;align-items:center;gap:6px;color:var(--text-muted);font-size:13px}.trust-dot{width:8px;height:8px;border-radius:50%;background:var(--success);flex-shrink:0}
.upload-wrap{max-width:720px;margin:0 auto}.upload-zone{border:2px dashed var(--primary-border);border-radius:var(--radius-xl);padding:56px 32px;cursor:pointer;transition:all .3s;position:relative;background:var(--primary-dim);text-align:center}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary-light);background:rgba(220,38,38,0.2);transform:scale(1.01)}.upload-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}.upload-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;box-shadow:0 8px 32px rgba(220,38,38,0.4)}.upload-zone h3{font-size:1.3rem;font-weight:700;margin-bottom:8px}.upload-zone p{color:var(--text-muted);font-size:.95rem;margin-bottom:20px}.upload-btn{display:inline-block;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;font-weight:700;font-size:1rem;padding:14px 36px;border-radius:12px;border:none;cursor:pointer;transition:all .25s;box-shadow:0 4px 20px rgba(220,38,38,0.4)}.upload-btn:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(220,38,38,0.5)}.upload-formats{font-size:12px;color:var(--text-dim);margin-top:16px}
.section{padding:80px 24px;max-width:1200px;margin:0 auto}.section-label{font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:#fca5a5;margin-bottom:12px}.section-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin-bottom:16px;letter-spacing:-0.5px}.section-sub{color:var(--text-muted);font-size:1.05rem;max-width:560px;margin-bottom:48px}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.tool-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;text-decoration:none;color:var(--text);transition:all .25s;display:flex;flex-direction:column;gap:16px;position:relative;overflow:hidden}.tool-card::before{content:'';position:absolute;inset:0;opacity:0;background:linear-gradient(135deg,var(--primary-dim),transparent);transition:opacity .3s}.tool-card:hover{border-color:var(--primary-border);transform:translateY(-4px);box-shadow:var(--shadow-primary)}.tool-card:hover::before{opacity:1}.tool-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.tool-card h3{font-size:1.05rem;font-weight:700;margin-bottom:4px}.tool-card p{color:var(--text-muted);font-size:.88rem;line-height:1.5}.tool-badge{font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px;background:var(--primary-dim);color:#fca5a5;align-self:flex-start;text-transform:uppercase;letter-spacing:.5px}.badge-ai{background:rgba(6,182,212,0.15);color:var(--accent)}.badge-free{background:rgba(16,185,129,0.15);color:var(--success)}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px}.step{text-align:center;padding:32px 24px}.step-number{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.3rem;font-weight:800;box-shadow:0 4px 20px rgba(220,38,38,0.4)}.step h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}.step p{color:var(--text-muted);font-size:.92rem}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.feature{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;display:flex;gap:20px;align-items:flex-start}.feature-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--primary-dim)}.feature h3{font-size:1rem;font-weight:700;margin-bottom:6px}.feature p{color:var(--text-muted);font-size:.88rem}
.stats-bar{background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:32px 24px}.stats-inner{max-width:1000px;margin:0 auto;display:flex;justify-content:center;gap:64px;flex-wrap:wrap}.stat{text-align:center}.stat-num{font-size:2rem;font-weight:800;background:linear-gradient(135deg,#f87171,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{color:var(--text-muted);font-size:.85rem;margin-top:4px}
.faq-list{max-width:760px;display:flex;flex-direction:column;gap:12px}.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--text);font-size:.98rem;font-weight:600;padding:20px 24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:background .2s}.faq-q:hover{background:var(--primary-dim)}.faq-q svg{flex-shrink:0;transition:transform .3s;color:var(--text-muted)}.faq-item.open .faq-q svg{transform:rotate(180deg)}.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}.faq-item.open .faq-a{max-height:300px}.faq-a p{padding:0 24px 20px;color:var(--text-muted);font-size:.92rem;line-height:1.7}
.footer{border-top:1px solid var(--border);padding:48px 24px;margin-top:40px}.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr repeat(3,auto);gap:48px;align-items:start}.footer-brand p{color:var(--text-muted);font-size:.88rem;margin-top:12px;max-width:260px;line-height:1.6}.footer-col h4{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:16px}.footer-col a{display:block;color:var(--text-muted);text-decoration:none;font-size:.9rem;margin-bottom:10px;transition:color .2s}.footer-col a:hover{color:var(--text)}.footer-bottom{max-width:1200px;margin:32px auto 0;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;color:var(--text-dim);font-size:.82rem}
.tool-page{padding:48px 24px;max-width:900px;margin:0 auto}.tool-header{margin-bottom:40px;text-align:center}.tool-header .badge{display:inline-block;background:var(--primary-dim);border:1px solid var(--primary-border);color:#fca5a5;font-size:12px;font-weight:700;padding:4px 12px;border-radius:100px;margin-bottom:16px;text-transform:uppercase;letter-spacing:.5px}.tool-header h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:12px;letter-spacing:-0.5px}.tool-header p{color:var(--text-muted);font-size:1.05rem;max-width:600px;margin:0 auto}
.process-panel{display:none;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:40px;text-align:center;margin-top:24px}.process-panel.show{display:block}.spinner{width:64px;height:64px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 24px}@keyframes spin{to{transform:rotate(360deg)}}.process-title{font-size:1.3rem;font-weight:700;margin-bottom:8px}.process-sub{color:var(--text-muted);font-size:.92rem;margin-bottom:28px}.progress-bar-wrap{background:rgba(255,255,255,0.08);border-radius:100px;height:8px;overflow:hidden;margin-bottom:12px}.progress-bar{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light),var(--accent));border-radius:100px;transition:width .5s ease;width:0}.progress-pct{font-size:.85rem;color:var(--text-muted)}
.result-panel{display:none;margin-top:24px}.result-panel.show{display:block}.result-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:32px;margin-bottom:16px}.result-img{max-width:100%;border-radius:12px;margin-bottom:16px}.download-btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;font-weight:700;font-size:.95rem;padding:12px 28px;border-radius:10px;border:none;cursor:pointer;text-decoration:none;transition:all .25s;margin-top:8px}.download-btn:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(220,38,38,0.45)}.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--border);color:var(--text);font-weight:600;font-size:.9rem;padding:10px 20px;border-radius:10px;cursor:pointer;text-decoration:none;transition:all .2s}.btn-secondary:hover{border-color:var(--primary-border);background:var(--card-hover)}.info-result{background:var(--primary-dim);border:1px solid var(--primary-border);border-radius:var(--radius-lg);padding:32px;text-align:center}.info-note{background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.3);border-radius:8px;padding:12px 16px;font-size:.85rem;color:#fbbf24;margin-top:12px}
.related{padding:48px 24px;max-width:900px;margin:0 auto}.related h2{font-size:1.3rem;font-weight:700;margin-bottom:20px}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.related-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-decoration:none;color:var(--text);transition:all .2s;display:flex;align-items:center;gap:12px}.related-card:hover{border-color:var(--primary-border);background:var(--card-hover);transform:translateY(-2px)}.related-card span{font-size:.9rem;font-weight:600}
.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:6px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.form-group input,.form-group select{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text);font-size:.95rem;outline:none;transition:border-color .2s}.form-group input:focus,.form-group select:focus{border-color:var(--primary)}.form-group select option{background:var(--card)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.controls-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:32px;margin-top:24px}
.toast-container{position:fixed;bottom:24px;right:24px;z-index:1000;display:flex;flex-direction:column;gap:8px}.toast{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 20px;font-size:.88rem;font-weight:500;display:flex;align-items:center;gap:10px;animation:slideIn .3s ease;max-width:340px;box-shadow:var(--shadow)}.toast.error{border-color:rgba(239,68,68,.4);color:#fca5a5}.toast.success{border-color:rgba(16,185,129,.4);color:#6ee7b7}@keyframes slideIn{from{transform:translateX(120%);opacity:0}to{transform:translateX(0);opacity:1}}
.file-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.file-item{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px 16px;display:flex;align-items:center;gap:12px;font-size:.9rem}.file-item svg{color:#fca5a5;flex-shrink:0}.file-item span{flex:1}.file-item button{background:none;border:none;color:var(--text-dim);cursor:pointer;padding:4px;border-radius:4px;transition:color .2s;display:flex}.file-item button:hover{color:var(--error)}
.range-wrap{margin:16px 0}.range-wrap label{display:flex;justify-content:space-between;margin-bottom:8px;font-size:.88rem;font-weight:600}.range-wrap input[type=range]{width:100%;accent-color:var(--primary);cursor:pointer}.range-value{color:#fca5a5;font-weight:700}
@media(max-width:768px){.nav-links{display:none}.hero{padding:48px 16px 40px}.footer-inner{grid-template-columns:1fr;gap:32px}.grid-2{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}}