*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#f97316;--secondary:#fb923c;
  --bg:#0f0f14;--bg-surface:#18181f;--bg-card:#1e1e28;
  --border:rgba(255,255,255,.08);--border-hover:rgba(249,115,22,.3);
  --text:#e8e8f0;--text-muted:#8888a8;--text-faint:#555570;
  --radius-sm:8px;--radius-md:14px;--radius-lg:20px;
  --transition:.2s cubic-bezier(.4,0,.2,1);
  --font-mono:'Fira Code','Cascadia Code','JetBrains Mono',monospace
}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ── HEADER ── */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,15,20,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;width:100%;max-width:1280px;margin-inline:auto;padding-inline:clamp(16px,4vw,48px)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:36px;height:36px}
.logo-text{font-size:1.1rem;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,#fff 40%,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{padding:6px 14px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;color:var(--text-muted);transition:all var(--transition)}
.nav-link:hover,.nav-link.active{color:var(--text);background:rgba(255,255,255,.06)}

/* ── LAYOUT ── */
.main-wrap{width:100%;max-width:1280px;margin-inline:auto;padding:clamp(16px,2.5vw,36px) clamp(16px,4vw,48px) clamp(40px,6vw,80px)}

/* ── HERO ── */
.tool-hero{text-align:center;padding:clamp(14px,2.5vw,32px) 0 clamp(18px,2.5vw,28px)}
.tool-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border-radius:999px;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:rgba(249,115,22,.1);border:1px solid rgba(249,115,22,.25);color:#fdba74;margin-bottom:14px}
.tool-title{font-size:clamp(2rem,5vw,3rem);font-weight:900;letter-spacing:-.04em;line-height:1.1;margin-bottom:8px}
.gradient-title{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tool-subtitle{font-size:clamp(.9rem,2vw,1.05rem);color:var(--text-muted);max-width:600px;margin:0 auto}

/* ── AD SLOT ── */
.ad-slot{background:rgba(255,255,255,.02);border:1px dashed rgba(255,255,255,.07);border-radius:var(--radius-md);min-height:90px;display:flex;align-items:center;justify-content:center;color:var(--text-faint);font-size:.75rem;overflow:hidden}

/* ── TWO-COL LAYOUT ── */
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}

/* ── FORM CARD ── */
.form-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}
.pane-header{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;border-bottom:1px solid var(--border);background:rgba(0,0,0,.15);gap:8px;flex-wrap:wrap;flex-shrink:0}
.pane-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--text-faint);display:flex;align-items:center;gap:6px}
.pane-actions{display:flex;gap:5px;flex-wrap:wrap}
.pane-btn{padding:4px 10px;border-radius:6px;font-size:.75rem;font-weight:700;color:var(--text-muted);border:1px solid var(--border);transition:all var(--transition)}
.pane-btn:hover{color:var(--primary);border-color:var(--border-hover);background:rgba(249,115,22,.06)}
.form-body{padding:18px 20px;display:flex;flex-direction:column;gap:14px}

/* ── FORM FIELDS ── */
.field{display:flex;flex-direction:column;gap:5px}
.field-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint)}
.field-hint{font-size:.72rem;color:var(--text-faint);line-height:1.4}
.field-input,.field-textarea,.field-select{width:100%;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:9px 12px;color:var(--text);font-family:inherit;font-size:.88rem;outline:none;transition:border-color var(--transition)}
.field-input:focus,.field-textarea:focus,.field-select:focus{border-color:var(--primary)}
.field-input::placeholder,.field-textarea::placeholder{color:var(--text-faint)}
.field-textarea{resize:vertical;min-height:72px;line-height:1.5}
.field-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23555570' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}
.char-counter{font-size:.7rem;text-align:right;margin-top:2px;font-variant-numeric:tabular-nums}
.char-ok{color:#34d399}.char-warn{color:#fbbf24}.char-err{color:#f87171}

/* Section toggle */
.section-toggle{display:flex;align-items:center;justify-content:space-between;cursor:pointer;padding:10px 0;border-bottom:1px solid var(--border);margin-bottom:2px;user-select:none}
.section-toggle-label{font-size:.82rem;font-weight:700;color:var(--text-muted);display:flex;align-items:center;gap:8px}
.toggle-arrow{font-size:.9rem;color:var(--text-faint);transition:transform var(--transition)}
.section-toggle.open .toggle-arrow{transform:rotate(180deg);color:var(--primary)}
.section-fields{display:none;flex-direction:column;gap:14px;padding-top:14px}
.section-toggle.open + .section-fields{display:flex}

/* Checkbox row */
.check-row{display:flex;align-items:center;gap:8px;padding:6px 0}
.check-row input[type=checkbox]{accent-color:var(--primary);width:15px;height:15px;flex-shrink:0}
.check-row label{font-size:.85rem;color:var(--text-muted);cursor:pointer}

/* ── OUTPUT CARD ── */
.output-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;position:sticky;top:84px}
.output-tabs{display:flex;border-bottom:1px solid var(--border);background:rgba(0,0,0,.1)}
.output-tab{padding:10px 16px;font-size:.78rem;font-weight:700;color:var(--text-faint);border-bottom:2px solid transparent;transition:all var(--transition);cursor:pointer;background:none;border-top:none;border-left:none;border-right:none}
.output-tab.active{color:var(--primary);border-bottom-color:var(--primary)}
.output-tab:hover:not(.active){color:var(--text-muted)}
.output-body{padding:16px 18px}
.output-pre{font-family:var(--font-mono);font-size:.8rem;line-height:1.8;color:#e8e8f0;white-space:pre-wrap;word-break:break-all;min-height:80px;max-height:60vh;overflow-y:auto}
.output-pre .tag-name{color:#7dd3fc}
.output-pre .attr-name{color:#fdba74}
.output-pre .attr-val{color:#86efac}
.copy-all-btn{display:flex;align-items:center;gap:6px;width:100%;padding:10px 18px;border-top:1px solid var(--border);font-size:.82rem;font-weight:700;color:var(--text-muted);background:none;cursor:pointer;transition:all var(--transition);border-left:none;border-right:none;border-bottom:none}
.copy-all-btn:hover{color:var(--primary);background:rgba(249,115,22,.06)}

/* ── PREVIEW CARD ── */
.preview-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-top:16px}
.serp-preview{padding:18px 20px}
.serp-url{font-size:.75rem;color:#34d399;margin-bottom:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.serp-title{font-size:1.05rem;font-weight:600;color:#8ab4f8;line-height:1.3;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.serp-desc{font-size:.83rem;color:#a0a0b0;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.og-preview{padding:0;overflow:hidden}
.og-image-box{width:100%;height:110px;background:var(--bg-surface);display:flex;align-items:center;justify-content:center;font-size:.75rem;color:var(--text-faint);border-bottom:1px solid var(--border)}
.og-image-box img{width:100%;height:110px;object-fit:cover}
.og-body{padding:12px 14px}
.og-domain{font-size:.7rem;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px}
.og-title{font-size:.9rem;font-weight:700;color:var(--text);margin-bottom:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.og-desc{font-size:.78rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ── STATS BAR ── */
.stats-bar{display:flex;flex-wrap:wrap;gap:8px;padding:10px 14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:12px}
.stat-item{display:flex;align-items:center;gap:6px;padding:4px 10px;background:rgba(255,255,255,.04);border-radius:999px;border:1px solid var(--border)}
.stat-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--text-faint)}
.stat-value{font-size:.8rem;font-weight:600;color:var(--text-muted);font-family:var(--font-mono)}
.stat-value.good{color:#34d399}.stat-value.warn{color:#fbbf24}.stat-value.bad{color:#f87171}

/* ── PAGE SECTIONS ── */
.section-divider{height:1px;background:var(--border);margin:36px 0}
.page-section{margin-top:36px}
.section-head{text-align:center;margin-bottom:28px}
.section-title{font-size:1.5rem;font-weight:800;letter-spacing:-.03em;margin-bottom:8px}
.section-desc{color:var(--text-muted);font-size:.93rem;max-width:540px;margin:0 auto}

/* ── STEPS / FEATURES / CHEAT / FAQ / RELATED ── */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px 22px;transition:all var(--transition)}
.step-card:hover{border-color:var(--border-hover);transform:translateY(-2px)}
.step-number{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:800;color:#fff;margin-bottom:12px}
.step-title{font-size:.95rem;font-weight:700;margin-bottom:6px}
.step-desc{font-size:.83rem;color:var(--text-muted);line-height:1.6}
.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px 22px;transition:all var(--transition)}
.feature-card:hover{border-color:var(--border-hover);transform:translateY(-2px)}
.feature-icon{font-size:1.6rem;margin-bottom:10px}
.feature-title{font-size:.95rem;font-weight:700;margin-bottom:6px}
.feature-desc{font-size:.83rem;color:var(--text-muted);line-height:1.6}
.cheat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.cheat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:18px 20px}
.cheat-title{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--primary);margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.cheat-rows{display:flex;flex-direction:column;gap:7px}
.cheat-row{display:flex;align-items:flex-start;gap:10px;font-size:.82rem}
.cheat-token{font-family:var(--font-mono);color:#fdba74;background:rgba(249,115,22,.08);border:1px solid rgba(249,115,22,.18);border-radius:4px;padding:1px 7px;font-size:.78rem;flex-shrink:0;white-space:nowrap}
.cheat-desc{color:var(--text-muted);line-height:1.4;padding-top:2px}
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:border-color var(--transition)}
.faq-item.open{border-color:rgba(249,115,22,.3)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;font-size:.93rem;font-weight:600;color:var(--text);text-align:left;background:none;border:none;cursor:pointer;transition:background var(--transition)}
.faq-q:hover{background:rgba(255,255,255,.03)}
.faq-icon{font-size:1.1rem;color:var(--text-faint);transition:transform var(--transition);flex-shrink:0}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--primary)}
.faq-a{display:none;padding:0 20px 16px;font-size:.88rem;color:var(--text-muted);line-height:1.7}
.faq-item.open .faq-a{display:block}
.faq-a p{margin-bottom:8px}.faq-a p:last-child{margin-bottom:0}
.faq-a code{font-family:var(--font-mono);font-size:.83em;background:rgba(249,115,22,.1);border:1px solid rgba(249,115,22,.2);border-radius:4px;padding:2px 6px;color:#fdba74}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.related-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;display:block;transition:all var(--transition)}
.related-card:hover{border-color:var(--border-hover);transform:translateY(-2px)}
.related-icon{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.related-icon svg{width:17px;height:17px;stroke:#fff}
.related-name{font-size:.88rem;font-weight:700;margin-bottom:4px;color:var(--text)}
.related-desc{font-size:.78rem;color:var(--text-muted);line-height:1.5;margin-bottom:8px}
.related-link{font-size:.75rem;color:var(--primary);font-weight:600}

/* ── TOAST ── */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--bg-card);border:1px solid rgba(249,115,22,.3);color:var(--text);padding:10px 20px;border-radius:999px;font-size:.83rem;font-weight:600;pointer-events:none;opacity:0;transition:.25s;z-index:9999;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ── FOOTER ── */
.site-footer{border-top:1px solid var(--border);padding:48px clamp(16px,4vw,48px) 28px;background:var(--bg-surface)}
.footer-grid{max-width:1280px;margin:0 auto 32px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-brand-text{font-size:.82rem;color:var(--text-faint);margin-top:10px;line-height:1.6}
.footer-heading{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:12px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:.85rem;color:var(--text-faint);transition:.15s}.footer-links a:hover{color:var(--text)}
.footer-bottom{max-width:1280px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);font-size:.8rem;color:var(--text-faint);flex-wrap:wrap;gap:10px}

/* ── RESPONSIVE ── */
@media(max-width:900px){.tool-grid{grid-template-columns:1fr}.output-card{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.main-nav{display:none}.footer-grid{grid-template-columns:1fr}}