:root{
  --bg:#f7f8fb;
  --surface:#ffffff;
  --surface-2:#f0f3f8;
  --ink:#111827;
  --muted:#5f6b7a;
  --line:#dfe5ee;
  --brand:#275efe;
  --brand-2:#09b981;
  --warn:#f59e0b;
  --danger:#ef4444;
  --shadow:0 18px 55px rgba(16,24,40,.09);
  --radius:24px;
  --radius-sm:16px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:linear-gradient(180deg,#fff 0%,var(--bg) 42%,#fff 100%);color:var(--ink);line-height:1.65}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 22px}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}.skip-link:focus{left:16px;top:16px;width:auto;height:auto;z-index:999;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.84);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,229,238,.8)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.15rem;letter-spacing:-.03em}.brand-mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--brand),#7c3aed 55%,var(--brand-2));box-shadow:0 10px 26px rgba(39,94,254,.26);position:relative}.brand-mark:after{content:"";position:absolute;inset:9px;border-radius:7px;background:rgba(255,255,255,.9)}.brand small{display:block;color:var(--muted);font-size:.72rem;font-weight:650;letter-spacing:0}.nav-links{display:flex;align-items:center;gap:8px}.nav-links a{padding:10px 12px;border-radius:12px;color:#263244;font-weight:650;font-size:.94rem}.nav-links a:hover{background:var(--surface-2);color:var(--ink)}.nav-cta{background:var(--ink)!important;color:#fff!important}.menu-toggle{display:none;border:0;background:var(--surface-2);border-radius:14px;padding:10px 12px;font-weight:800;color:var(--ink)}
.hero{padding:72px 0 38px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;color:#1747b8;border:1px solid #d8e6ff;border-radius:999px;padding:8px 12px;font-weight:750;font-size:.88rem}.eyebrow:before{content:"";width:8px;height:8px;border-radius:99px;background:var(--brand)}h1{font-size:clamp(2.3rem,5vw,5.1rem);line-height:.98;margin:18px 0 18px;letter-spacing:-.075em}h2{font-size:clamp(1.8rem,3vw,3rem);line-height:1.08;letter-spacing:-.055em;margin:0 0 14px}h3{font-size:1.18rem;line-height:1.3;margin:0 0 8px}.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--muted);max-width:720px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:15px;padding:12px 17px;font-weight:800;border:1px solid var(--line);background:#fff;box-shadow:0 8px 25px rgba(16,24,40,.05);cursor:pointer}.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}.btn.brand-btn{background:var(--brand);color:#fff;border-color:var(--brand)}.btn:hover{transform:translateY(-1px)}.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;color:var(--muted);font-size:.94rem}.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:rgba(255,255,255,.75);border-radius:999px;padding:8px 11px}.chip:before{content:"✓";color:var(--brand-2);font-weight:900}.hero-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.mock-toolbar{display:flex;gap:7px;margin-bottom:16px}.dot{width:11px;height:11px;border-radius:50%;background:#e5e7eb}.dot:nth-child(1){background:#fb7185}.dot:nth-child(2){background:#fbbf24}.dot:nth-child(3){background:#34d399}.tool-box{border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f7f9fd);border-radius:20px;padding:18px}.input-wrap{display:flex;gap:10px;align-items:center;border:1px solid var(--line);background:#fff;border-radius:16px;padding:10px}.input-wrap input,.input-wrap textarea{border:0;outline:0;background:transparent;flex:1;min-width:0;font:inherit;color:var(--ink)}.input-wrap textarea{min-height:124px;resize:vertical}.result{margin-top:12px;padding:13px;border-radius:14px;background:#f4f7fb;border:1px dashed #cfd8e8;color:var(--muted);font-size:.95rem}.status-ok{color:#047857}.status-bad{color:#b91c1c}.section{padding:54px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:20px}.section-head p{color:var(--muted);max-width:720px;margin:0}.grid{display:grid;gap:18px}.grid.tools{grid-template-columns:repeat(4,1fr)}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.three{grid-template-columns:repeat(3,1fr)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px;box-shadow:0 12px 35px rgba(16,24,40,.055)}.tool-card{display:flex;flex-direction:column;gap:10px;min-height:235px}.tool-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:#eef4ff;color:var(--brand);font-weight:900}.tool-card p,.card p{color:var(--muted);margin:0}.tool-card .meta{font-size:.87rem;color:#667085;margin-top:auto}.ad-slot{border:1px dashed #cbd5e1;border-radius:18px;background:repeating-linear-gradient(-45deg,#f8fafc,#f8fafc 8px,#f1f5f9 8px,#f1f5f9 16px);min-height:96px;display:grid;place-items:center;text-align:center;color:#64748b;font-size:.9rem;padding:18px}.page-hero{padding:52px 0 22px}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}.tool-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.tool-form label{display:block;font-weight:800;margin-bottom:8px}.field{width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:14px;background:#fff;font:inherit;outline:0}.field:focus{border-color:rgba(39,94,254,.55);box-shadow:0 0 0 4px rgba(39,94,254,.11)}.help{font-size:.91rem;color:var(--muted);margin-top:8px}.notice{border:1px solid #fde68a;background:#fffbeb;color:#92400e;border-radius:16px;padding:14px;margin:16px 0}.safe{border-color:#bbf7d0;background:#f0fdf4;color:#166534}.content{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:26px}.content h2{font-size:1.8rem}.content h3{margin-top:20px}.content p,.content li{color:#4b5563}.content a{color:var(--brand);font-weight:750}.list-check{padding-left:0;list-style:none}.list-check li{position:relative;padding-left:28px;margin:9px 0}.list-check li:before{content:"✓";position:absolute;left:0;color:var(--brand-2);font-weight:900}.sidebar{position:sticky;top:92px;display:grid;gap:16px}.mini-list{display:grid;gap:8px}.mini-list a{display:flex;justify-content:space-between;gap:10px;padding:11px 12px;border-radius:12px;background:#f8fafc;color:#334155;font-weight:700}.mini-list a:hover{background:#eef4ff;color:#1747b8}.footer{padding:48px 0;border-top:1px solid var(--line);background:#fff}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:24px}.footer h3{font-size:1rem}.footer p,.footer a{color:var(--muted);font-size:.95rem}.footer a:hover{color:var(--ink)}.footer-links{display:grid;gap:7px}.small{font-size:.9rem;color:var(--muted)}.copy{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:8px;padding:2px 7px;color:#334155}.breadcrumbs{display:flex;gap:8px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:.92rem;margin-bottom:14px}.breadcrumbs a{color:#334155;font-weight:700}.spinner{display:none;width:18px;height:18px;border:3px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.loading .spinner{display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}
@media (max-width:980px){.hero-grid,.tool-layout,.grid.two{grid-template-columns:1fr}.grid.tools,.grid.three{grid-template-columns:repeat(2,1fr)}.sidebar{position:static}.footer-grid{grid-template-columns:1fr 1fr}.nav-links{position:absolute;left:16px;right:16px;top:78px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:10px}.nav-links.open{display:flex}.menu-toggle{display:block}.nav-links a{padding:12px 14px}.hero{padding-top:44px}}
@media (max-width:620px){.container{padding:0 16px}.grid.tools,.grid.three,.footer-grid{grid-template-columns:1fr}.hero-actions .btn{width:100%}.section-head{display:block}.nav{height:66px}h1{letter-spacing:-.055em}.tool-panel{padding:16px}.content{padding:18px}.copy{display:block}.brand small{display:none}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto;transition:none!important;animation:none!important}.btn:hover{transform:none}}