main.container { font-family: 'Inter', system-ui, sans-serif !important; background-color: #f8fafc; padding: 40px 15px !important; border-radius: 16px; }
.tool-hero { text-align: center; margin-bottom: 35px; }
.tool-title-main { font-size: 2.2rem !important; font-weight: 800 !important; color: #0f172a !important; letter-spacing: -1px !important; }
.tool-subtitle-main { font-size: 16px !important; color: #475569 !important; font-weight: 600 !important; max-width: 750px; margin: 0 auto; line-height: 1.6; }
.invoice-workspace { max-width: 1100px; margin: 0 auto; }
.invoice-grid { display: grid; grid-template-columns: 1fr; gap: 25px; }
@media (min-width: 768px) { .invoice-grid { grid-template-columns: 1.1fr 0.9fr; } }
.invoice-card { background: #ffffff; border: 1px solid #e2e8f0; border-radius: 16px; padding: 24px; box-shadow: 0 8px 20px -6px rgba(0,0,0,0.04); display: flex; flex-direction: column; gap: 16px; }
.card-title { font-size: 18px !important; font-weight: 800 !important; color: #0f172a !important; margin: 0; padding-bottom: 10px; border-bottom: 1px solid #f1f5f9; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.lbl { font-size: 13px; font-weight: 700; color: #475569; }
.pro-input { width: 100%; padding: 11px 14px; font-size: 15px; font-weight: 600; border: 2px solid #e2e8f0; border-radius: 8px; outline: none; box-sizing: border-box; background: #fff; color: #0f172a; }
.pro-input:focus { border-color: #d97706; }
.res-item { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 10px; font-size: 14px; font-weight: 700; color: #475569; }
.res-item strong { font-size: 16px; color: #0f172a; }
.highlight-item-amber { border-left: 4px solid #d97706; }
.highlight-item-amber strong { font-size: 17px; color: #d97706; }
.status-banner { padding: 12px; border-radius: 8px; font-size: 13px; font-weight: 700; text-align: center; line-height: 1.4; }
.premium-amber-banner { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.premium-red-banner { background: #fef2f2; color: #991b1b; border: 1px solid #fee2e2; }
.seo-guide-section { max-width: 1100px; margin: 50px auto 0 auto; }
.step-grid { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 25px; }
@media (min-width: 768px) { .step-grid { grid-template-columns: repeat(3, 1fr); } }
.step-card { background: #fff; border: 1px solid #e2e8f0; padding: 22px; border-radius: 12px; position: relative; }
.step-num { position: absolute; top: -12px; left: 20px; background: #d97706; color: #fff; font-weight: 800; width: 26px; height: 26px; display: flex; align-items: center; justify-content: center; border-radius: 50%; font-size: 13px; }
.step-card h4 { margin: 8px 0; font-size: 16px; font-weight: 700; color: #0f172a; }
.step-card p { margin: 0; font-size: 13.5px; color: #475569; line-height: 1.5; }
.faq-section { max-width: 850px; margin: 50px auto 20px auto; }
.faq-main-title { font-size: 24px !important; font-weight: 800 !important; color: #0f172a; text-align: center; margin-bottom: 25px; }
.faq-item { background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 20px; margin-bottom: 15px; }
.faq-question { font-size: 16px !important; font-weight: 700 !important; color: #0f172a; margin: 0 0 8px 0; }
.faq-answer { font-size: 14px; color: #475569; line-height: 1.6; margin: 0; }