:root{
  --navy-950:#070b14;
  --navy-900:#0b101c;
  --navy-800:#111828;
  --navy-700:#1a2336;
  --navy-600:#243049;
  --border:#243049;
  --text-primary:#eef1f8;
  --text-secondary:#9aa5bd;
  --text-muted:#6b7690;
  --accent:#3ea6ff;
  --accent-2:#22d3ee;
  --success:#22c55e;
  --danger:#ef4444;
  --warning:#f59e0b;
  --card-bg:#0e1422;
  --header-h:72px;
  --radius:14px;
  --shadow:0 20px 50px -20px rgba(0,0,0,.6);
  --font-display:'Outfit',sans-serif;
  --font-body:'Inter',sans-serif;
}

[data-theme="light"]{
  --navy-950:#f6f8fc;
  --navy-900:#ffffff;
  --navy-800:#eef1f8;
  --navy-700:#e3e8f3;
  --navy-600:#d3dae8;
  --border:#dde3f0;
  --text-primary:#101625;
  --text-secondary:#4b5670;
  --text-muted:#7280a0;
  --card-bg:#ffffff;
  --shadow:0 20px 50px -25px rgba(30,40,80,.25);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--navy-950);
  color:var(--text-primary);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
.container{max-width:1180px;margin:0 auto;padding:0 20px;width:100%}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:color-mix(in srgb, var(--navy-900) 92%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  height:var(--header-h);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:1.15rem;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-mark svg{width:18px;height:18px}

nav.primary-nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-item{position:relative}
.nav-link{
  display:flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:8px;font-size:.92rem;font-weight:500;color:var(--text-secondary);
  cursor:pointer;background:none;border:none;font-family:var(--font-body);
  white-space:nowrap;
}
.nav-link:hover,.nav-link[aria-expanded="true"]{color:var(--text-primary);background:var(--navy-800)}
.chev{width:14px;height:14px;transition:transform .2s}
.nav-item[data-open="true"] .chev{transform:rotate(180deg)}

.mega{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  width:min(680px,90vw);
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px;
  display:none;grid-template-columns:repeat(2,1fr);gap:6px 18px;
  max-height:70vh;overflow-y:auto;
}
.nav-item[data-open="true"] .mega{display:grid}
.mega a{padding:8px 10px;border-radius:8px;font-size:.86rem;color:var(--text-secondary)}
.mega a:hover{background:var(--navy-800);color:var(--accent)}

.header-actions{display:flex;align-items:center;gap:10px}
.theme-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--navy-800);
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);flex-shrink:0;
}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .icon-moon{display:none}
[data-theme="light"] .theme-toggle .icon-sun{display:none}
[data-theme="light"] .theme-toggle .icon-moon{display:block}

.hamburger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--navy-800);color:var(--text-primary);align-items:center;justify-content:center;cursor:pointer}

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar{border-bottom:1px solid var(--border);background:var(--navy-900)}
.breadcrumb{display:flex;align-items:center;gap:8px;padding:10px 0;font-size:.82rem;color:var(--text-muted);flex-wrap:wrap}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span[aria-current]{color:var(--text-primary)}

/* ---------- Hero ---------- */
.hero{padding:64px 0 40px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--accent-2);background:color-mix(in srgb, var(--accent-2) 12%, transparent);
  padding:6px 12px;border-radius:999px;margin-bottom:18px;
}
.hero h1{font-size:clamp(2rem,4vw,2.9rem);line-height:1.1}
.hero h1 .accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:1.05rem;color:var(--text-secondary);max-width:56ch}
.hero-stats{display:flex;gap:24px;margin-top:24px;flex-wrap:wrap}
.hero-stat b{display:block;font-family:var(--font-display);font-size:1.4rem}
.hero-stat span{font-size:.8rem;color:var(--text-muted)}

.hero-card{
  background:var(--card-bg);border:1px solid var(--border);border-radius:20px;padding:26px;box-shadow:var(--shadow);
}
.hero-card .mail-chip{display:flex;align-items:center;gap:10px;padding:12px;border-radius:12px;background:var(--navy-800);margin-bottom:10px;border:1px solid var(--border)}
.hero-card .mail-chip svg{width:20px;height:20px;color:var(--accent-2);flex-shrink:0}
.hero-card .mail-chip .t{font-size:.85rem;font-weight:600}
.hero-card .mail-chip .d{font-size:.75rem;color:var(--text-muted)}

/* ---------- Share bar ---------- */
.share-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:18px 0 6px}
.share-bar .label{font-size:.82rem;color:var(--text-muted);font-weight:600}
.share-link{
  width:38px;height:38px;border-radius:10px;background:var(--navy-800);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--text-secondary);
}
.share-link:hover{color:var(--accent);border-color:var(--accent)}
.share-link svg{width:16px;height:16px}

/* ---------- Quick tool strip ---------- */
.tool-strip{padding:16px 0 8px}
.tool-strip h2{font-size:1rem;color:var(--text-secondary);margin-bottom:12px;font-weight:600}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-size:.78rem;padding:7px 12px;border-radius:999px;border:1px solid var(--border);background:var(--navy-800);
  color:var(--text-secondary);white-space:nowrap;
}
.chip:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- Section shell ---------- */
.section{padding:56px 0}
.section-head{max-width:640px;margin:0 auto 36px;text-align:center}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.1rem)}
.section-head p{color:var(--text-secondary)}

/* ---------- Tool form ---------- */
.tool-panel{
  background:var(--card-bg);border:1px solid var(--border);border-radius:20px;padding:clamp(20px,4vw,36px);
  box-shadow:var(--shadow);
}
.form-row{display:flex;gap:10px;flex-wrap:wrap}
.input-wrap{flex:1;min-width:240px;position:relative}
.input-wrap input{
  width:100%;padding:15px 16px;border-radius:12px;border:1px solid var(--border);background:var(--navy-800);
  color:var(--text-primary);font-size:1rem;font-family:var(--font-body);
}
.input-wrap input:focus{border-color:var(--accent)}
.field-hint{font-size:.78rem;color:var(--text-muted);margin-top:8px}
.field-error{font-size:.8rem;color:var(--danger);margin-top:8px;display:none}
.field-error.show{display:block}
.input-wrap.invalid input{border-color:var(--danger)}
.input-wrap.valid input{border-color:var(--success)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 26px;border-radius:12px;font-weight:600;font-size:.95rem;cursor:pointer;border:none;
  font-family:var(--font-body);white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04101f}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.btn-ghost{background:var(--navy-800);color:var(--text-primary);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-danger-ghost{background:var(--navy-800);color:var(--danger);border:1px solid var(--border)}
.btn sup.spinner{display:none}
.btn.loading sup.spinner{display:inline-block}

.spinner{
  width:16px;height:16px;border-radius:50%;border:2px solid rgba(4,16,31,.35);border-top-color:#04101f;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.disclaimer-line{font-size:.78rem;color:var(--text-muted);margin-top:16px}

/* ---------- Results ---------- */
#results-section{scroll-margin-top:90px}
.result-card{
  background:var(--card-bg);border:1px solid var(--border);border-radius:18px;padding:24px;margin-bottom:16px;
}
.verdict{display:flex;align-items:center;gap:14px;padding:18px;border-radius:14px;margin-bottom:20px}
.verdict.safe{background:color-mix(in srgb, var(--success) 14%, transparent);border:1px solid color-mix(in srgb, var(--success) 40%, transparent)}
.verdict.danger{background:color-mix(in srgb, var(--danger) 14%, transparent);border:1px solid color-mix(in srgb, var(--danger) 40%, transparent)}
.verdict.unknown{background:color-mix(in srgb, var(--warning) 14%, transparent);border:1px solid color-mix(in srgb, var(--warning) 40%, transparent)}
.verdict svg{width:28px;height:28px;flex-shrink:0}
.verdict h3{margin:0 0 2px;font-size:1.05rem}
.verdict p{margin:0;font-size:.88rem;color:var(--text-secondary)}

.host-block{border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:12px;background:var(--navy-800)}
.host-block h4{font-size:.95rem;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.badge{font-size:.68rem;padding:3px 9px;border-radius:999px;font-weight:700;letter-spacing:.02em}
.badge.open{background:color-mix(in srgb, var(--danger) 22%, transparent);color:var(--danger)}
.badge.closed{background:color-mix(in srgb, var(--success) 22%, transparent);color:var(--success)}
.badge.unreachable{background:color-mix(in srgb, var(--warning) 22%, transparent);color:var(--warning)}

.probe-table{width:100%;border-collapse:collapse;margin-top:10px;font-size:.82rem}
.probe-table th,.probe-table td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}
.probe-table th{color:var(--text-muted);font-weight:600;font-size:.72rem;text-transform:uppercase;letter-spacing:.04em}
.probe-table td.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.78rem}
.pill-yes{color:var(--danger);font-weight:700}
.pill-no{color:var(--success);font-weight:700}

.rec-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.rec-list li{display:flex;gap:10px;font-size:.88rem;color:var(--text-secondary);align-items:flex-start}
.rec-list li svg{width:16px;height:16px;color:var(--accent-2);flex-shrink:0;margin-top:3px}

.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.raw-json{
  margin-top:16px;background:var(--navy-900);border:1px solid var(--border);border-radius:12px;padding:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.76rem;color:var(--text-secondary);
  max-height:320px;overflow:auto;white-space:pre-wrap;word-break:break-word;
}
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--navy-800);border:1px solid var(--border);padding:12px 20px;border-radius:12px;
  font-size:.85rem;opacity:0;transition:all .25s;z-index:2000;pointer-events:none;box-shadow:var(--shadow);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- Features / Steps / FAQ ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card,.step-card{
  background:var(--card-bg);border:1px solid var(--border);border-radius:16px;padding:22px;
}
.feature-card .icon,{width:42px;height:42px}
.feature-card .icon{
  width:42px;height:42px;border-radius:11px;background:color-mix(in srgb, var(--accent) 16%, transparent);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--accent-2);
}
.feature-card .icon svg{width:22px;height:22px}
.feature-card h3{font-size:1.02rem}
.feature-card p{font-size:.88rem;color:var(--text-secondary);margin:0}

.step-card{position:relative;padding-top:44px}
.step-num{
  position:absolute;top:18px;left:22px;font-family:var(--font-display);font-weight:800;font-size:1.6rem;
  color:var(--accent);opacity:.5;
}
.step-card h3{font-size:1rem}
.step-card p{font-size:.86rem;color:var(--text-secondary);margin:0}

.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;padding:18px 4px;display:flex;justify-content:space-between;
  align-items:center;cursor:pointer;color:var(--text-primary);font-family:var(--font-body);font-size:.98rem;font-weight:600;
}
.faq-q svg{width:18px;height:18px;flex-shrink:0;transition:transform .2s;color:var(--text-muted)}
.faq-item[data-open="true"] .faq-q svg{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;font-size:.9rem;color:var(--text-secondary)}
.faq-item[data-open="true"] .faq-a{max-height:400px}
.faq-a p{padding-bottom:16px;margin:0}

/* ---------- Article ---------- */
.article{max-width:820px;margin:0 auto}
.article h2{font-size:1.5rem;margin-top:1.4em}
.article p{color:var(--text-secondary)}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,color-mix(in srgb, var(--accent) 18%, var(--navy-900)),color-mix(in srgb, var(--accent-2) 12%, var(--navy-900)));
  border:1px solid var(--border);border-radius:24px;padding:44px;text-align:center;
}
.cta-actions{display:flex;justify-content:center;gap:14px;margin-top:18px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--navy-900);margin-top:40px;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:24px}
.footer-col h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:12px}
.footer-col a{display:block;font-size:.85rem;color:var(--text-secondary);padding:5px 0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid var(--border);margin-top:32px;padding-top:20px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:.8rem;color:var(--text-muted);
}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--accent)}
.trademark-note{font-size:.74rem;color:var(--text-muted);max-width:900px;margin:16px 0 0}

/* ---------- Cookie banner ---------- */
.cookie-banner{
  position:fixed;bottom:0;left:0;right:0;z-index:3000;background:var(--navy-800);border-top:1px solid var(--border);
  padding:16px 20px;display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;
  transform:translateY(120%);transition:transform .3s ease;
}
.cookie-banner.show{transform:translateY(0)}
.cookie-banner p{margin:0;font-size:.85rem;color:var(--text-secondary);max-width:640px}
.cookie-banner a{color:var(--accent)}
.cookie-actions{display:flex;gap:10px}

/* ---------- Mobile nav drawer ---------- */
.mobile-drawer{
  position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:var(--navy-900);z-index:900;
  overflow-y:auto;padding:16px 20px 100px;display:none;
}
.mobile-drawer.open{display:block}
.mobile-acc{border-bottom:1px solid var(--border)}
.mobile-acc summary{padding:14px 4px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.mobile-acc a{display:block;padding:9px 4px;font-size:.88rem;color:var(--text-secondary)}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:780px){
  nav.primary-nav,.header-actions .theme-toggle{}
  nav.primary-nav{display:none}
  .hamburger{display:flex}
}
@media (max-width:640px){
  html,body{max-width:100vw;overflow-x:hidden}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .hero{padding:40px 0 24px}
  .section{padding:40px 0}
  .cta-band{padding:28px 18px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
}