*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --blue-dark:#0f3460;--blue-mid:#1a56a0;--blue-light:#2a7de1;--blue-pale:#e8f1fd;
  --white:#ffffff;--bg:#f4f8ff;--text-main:#1a1f36;--text-muted:#5a6478;
  --border:#dce6f7;--radius:12px;--shadow:0 2px 12px rgba(15,52,96,0.08);
  --green:#16a34a;--green-pale:#dcfce7;--red:#dc2626;--red-pale:#fee2e2;
}
body{font-family:'Plus Jakarta Sans',Arial,sans-serif;background:var(--bg);color:var(--text-main);line-height:1.6;}
.skip-link{position:absolute;top:-100px;left:16px;background:var(--blue-dark);color:#fff;padding:8px 16px;border-radius:0 0 var(--radius) var(--radius);font-size:14px;text-decoration:none;z-index:999;transition:top 0.2s;}
.skip-link:focus{top:0;}
.site-header{background:var(--white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;}
.nav-inner{max-width:1100px;margin:0 auto;padding:0 24px;height:62px;display:flex;align-items:center;justify-content:space-between;}
.logo{font-size:22px;font-weight:700;color:var(--blue-dark);letter-spacing:-0.5px;text-decoration:none;}
.logo span{color:var(--blue-light);}
.nav-links{display:flex;gap:4px;list-style:none;}
.nav-links a{text-decoration:none;font-size:14px;font-weight:500;color:var(--text-muted);padding:6px 14px;border-radius:8px;transition:background 0.2s,color 0.2s;}
.nav-links a:hover{background:var(--blue-pale);color:var(--blue-light);}
.container{max-width:1100px;margin:0 auto;padding:0 24px;}
.breadcrumb-bar{background:var(--white);border-bottom:1px solid var(--border);padding:10px 0;}
.breadcrumb{list-style:none;display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);}
.breadcrumb a{color:var(--blue-light);text-decoration:none;}
.breadcrumb li[aria-current="page"]{color:var(--text-main);font-weight:500;}
.tool-hero{background:linear-gradient(135deg,var(--blue-dark) 0%,var(--blue-mid) 60%,var(--blue-light) 100%);color:var(--white);text-align:center;padding:48px 24px 40px;}
.tool-hero-icon{width:64px;height:64px;border-radius:16px;background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.3);display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 16px;}
.tool-hero h1{font-size:clamp(24px,4vw,38px);font-weight:700;letter-spacing:-0.5px;margin-bottom:12px;}
.tool-hero p{font-size:16px;opacity:0.88;max-width:540px;margin:0 auto;}
.tool-section{padding:40px 0;}
.tool-card-main{background:var(--white);border:1px solid var(--border);border-radius:16px;padding:32px;max-width:660px;margin:0 auto;box-shadow:var(--shadow);}
.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color 0.2s,background 0.2s;position:relative;}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--blue-light);background:var(--blue-pale);}
.upload-zone i{font-size:40px;color:var(--blue-light);margin-bottom:14px;display:block;}
.upload-title{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:4px;}
.upload-sub{font-size:13px;color:var(--text-muted);}
.upload-zone input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%;}
.file-info{display:flex;align-items:center;gap:14px;background:var(--blue-pale);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;margin-bottom:16px;}
.file-info .fa-file-pdf{font-size:28px;color:var(--blue-light);flex-shrink:0;}
.file-name{font-size:14px;font-weight:600;color:var(--text-main);word-break:break-all;}
.file-meta{font-size:12px;color:var(--text-muted);margin-top:2px;}
.file-remove{margin-left:auto;background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:16px;padding:4px;border-radius:50%;transition:color 0.2s,background 0.2s;flex-shrink:0;}
.file-remove:hover{color:var(--red);background:var(--red-pale);}
.tool-options{margin-top:16px;}
.option-label{font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.8px;display:block;margin-bottom:10px;}
.btn-action{width:100%;padding:14px;border-radius:var(--radius);background:var(--blue-light);color:#fff;border:none;font-size:16px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:background 0.2s,transform 0.15s;font-family:inherit;margin-top:16px;}
.btn-action:hover{background:var(--blue-mid);transform:translateY(-1px);}
.tool-progress{text-align:center;padding:20px 0;}
.prog-icon{font-size:36px;color:var(--blue-light);margin-bottom:14px;}
.progress-title{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:16px;}
.progress-bar{background:var(--border);border-radius:999px;height:8px;overflow:hidden;}
.progress-fill{height:100%;background:var(--blue-light);border-radius:999px;width:0;transition:width 0.3s ease;}
.tool-result{text-align:center;padding:16px 0;}
.tool-result .fa-check-circle{font-size:48px;color:var(--green);margin-bottom:12px;display:block;}
.tool-result>p{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:14px;}
.result-summary{font-size:13px;color:var(--text-muted);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:10px 16px;margin-bottom:20px;display:inline-block;}
.result-summary strong{color:var(--text-main);}
.btn-download{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:var(--green);color:#fff;border:none;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;margin-bottom:12px;transition:background 0.2s;font-family:inherit;}
.btn-download:hover{background:#15803d;}
.btn-again{display:block;margin:0 auto;background:none;border:none;color:var(--blue-light);font-size:14px;font-weight:500;cursor:pointer;text-decoration:underline;font-family:inherit;}
.tool-error{text-align:center;padding:16px 0;}
.tool-error .fa-exclamation-triangle{font-size:40px;color:var(--red);margin-bottom:12px;display:block;}
.tool-error p{font-size:15px;color:var(--text-muted);margin-bottom:16px;}
.trust-row{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;margin-top:20px;max-width:660px;margin-left:auto;margin-right:auto;}
.trust-row span{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:6px;}
.trust-row i{color:var(--blue-light);}
.content-section{padding:56px 0;}
.content-grid{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start;}
.content-main h2{font-size:22px;font-weight:700;color:var(--blue-dark);margin:32px 0 12px;}
.content-main h2:first-child{margin-top:0;}
.content-main h3{font-size:17px;font-weight:600;color:var(--text-main);margin:24px 0 10px;}
.content-main p{font-size:15px;color:var(--text-muted);margin-bottom:14px;line-height:1.7;}
.content-main a{color:var(--blue-light);}
.guide-steps,.guide-list{margin:0 0 16px 20px;display:flex;flex-direction:column;gap:10px;}
.guide-steps li,.guide-list li{font-size:15px;color:var(--text-muted);line-height:1.65;}
.guide-steps li strong,.guide-list li strong{color:var(--text-main);}
.content-sidebar{display:flex;flex-direction:column;gap:20px;}
.sidebar-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);}
.sidebar-card h3{font-size:13px;font-weight:700;color:var(--blue-dark);margin-bottom:14px;text-transform:uppercase;letter-spacing:0.8px;}
.sidebar-tools{list-style:none;display:flex;flex-direction:column;gap:2px;}
.sidebar-tools a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text-main);text-decoration:none;transition:background 0.15s,color 0.15s;}
.sidebar-tools a:hover{background:var(--blue-pale);color:var(--blue-light);}
.sidebar-tools i{color:var(--blue-light);width:16px;text-align:center;flex-shrink:0;}
.tip-list{list-style:none;display:flex;flex-direction:column;gap:10px;}
.tip-list li{font-size:13px;color:var(--text-muted);display:flex;align-items:flex-start;gap:8px;line-height:1.5;}
.tip-list .fa-lightbulb{color:#eab308;margin-top:2px;flex-shrink:0;}
.section-alt{background:var(--white);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 0;}
.section-alt h2{font-size:26px;font-weight:700;color:var(--blue-dark);margin-bottom:10px;}
.section-intro{font-size:15px;color:var(--text-muted);margin-bottom:28px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.faq-item summary{padding:16px 20px;font-size:15px;font-weight:600;color:var(--text-main);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:'+';font-size:20px;font-weight:400;color:var(--blue-light);transition:transform 0.2s;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item[open] summary{border-bottom:1px solid var(--border);color:var(--blue-dark);}
.faq-item p{padding:16px 20px;font-size:14px;color:var(--text-muted);line-height:1.65;}
.site-footer{background:var(--blue-dark);color:rgba(255,255,255,0.7);padding:48px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-brand{font-size:20px;font-weight:700;color:#fff;margin-bottom:10px;}
.footer-text{font-size:14px;line-height:1.6;max-width:220px;}
.footer-heading{font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:rgba(255,255,255,0.5);margin-bottom:14px;}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,0.7);text-decoration:none;font-size:14px;transition:color 0.2s;}
.footer-links a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:20px 24px;}
.footer-meta{font-size:13px;color:rgba(255,255,255,0.45);text-align:center;}
@media(max-width:900px){.content-grid{grid-template-columns:1fr;}.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:540px){.nav-links{display:none;}.tool-card-main{padding:20px 16px;}.footer-grid{grid-template-columns:1fr;}}