:root{
  --accent:#4f46e5;
  --accent-dark:#4338ca;
  --accent-light:#eef2ff;
  --ink:#0f172a;
  --gray:#475569;
  --gray-light:#94a3b8;
  --border:#e2e8f0;
  --bg:#f8fafc;
  --white:#fff;
  --stage:#0b1220;
  --stage-2:#131c30;
  --green:#16a34a;
  --red:#dc2626;
  --amber:#d97706;
  --radius:16px;
  --shadow:0 4px 24px rgba(15,23,42,.07);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.7;font-size:16px}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25}

/* Header */
header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.3rem;color:var(--ink);text-decoration:none;letter-spacing:-.4px}
.logo:hover{text-decoration:none}
.logo svg{width:30px;height:30px;flex:none}
.logo .wm{display:inline}
.logo em{font-style:normal;color:var(--accent)}
.nav-links{display:flex;gap:22px;list-style:none;align-items:center}
.nav-links a{color:var(--gray);font-weight:500;font-size:.94rem}
.nav-links a:hover,.nav-links a.on{color:var(--accent);text-decoration:none}
.menu-btn{display:none;background:none;border:none;cursor:pointer;padding:6px}
.menu-btn svg{width:26px;height:26px;stroke:var(--ink)}
@media(max-width:900px){
  .menu-btn{display:block}
  .nav-links{display:none;position:absolute;top:62px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px 20px;gap:14px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);align-items:flex-start}
  .nav-links.open{display:flex}
}

/* Page head */
.page-head{background:linear-gradient(180deg,var(--accent-light) 0%,#fff 100%);padding:38px 0 26px;text-align:center}
.page-head h1{font-size:2.1rem;font-weight:800;letter-spacing:-.6px;margin-bottom:10px}
.page-head h1 em{font-style:normal;color:var(--accent)}
.page-head p{max-width:740px;margin:0 auto;color:var(--gray);font-size:1.05rem}
@media(max-width:600px){.page-head h1{font-size:1.55rem}}

/* Tool tabs */
.tool-tabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;padding:18px 0 0}
.tool-tabs a{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;border:1.5px solid var(--border);background:#fff;color:var(--gray);font-weight:600;font-size:.92rem}
.tool-tabs a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.tool-tabs a.on{background:var(--accent);border-color:var(--accent);color:#fff}
.tool-tabs svg{width:17px;height:17px}

/* Stage (clock display) */
.stage{background:linear-gradient(160deg,var(--stage) 0%,var(--stage-2) 100%);border-radius:var(--radius);color:#fff;padding:38px 24px;text-align:center;margin:22px auto 0;max-width:900px;box-shadow:0 12px 40px rgba(15,23,42,.18)}
.display{font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:-2px;line-height:1;font-size:clamp(2.7rem,11vw,6rem);font-feature-settings:"tnum"}
.display .ms{font-size:.42em;opacity:.62;letter-spacing:-1px}
.display .ampm{font-size:.28em;opacity:.75;letter-spacing:0;margin-left:.25em;font-weight:700}
.display.ring{animation:flash .8s steps(1,end) infinite}
@keyframes flash{50%{color:#fca5a5}}
.stage-sub{margin-top:12px;color:#94a3b8;font-size:.98rem}
.stage-sub strong{color:#e2e8f0}
.progress-ring{margin:0 auto}

/* Controls */
.controls{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;font-weight:600;border:none;border-radius:11px;padding:12px 26px;font-size:1rem;cursor:pointer;transition:.18s;font-family:inherit}
.btn:hover{background:var(--accent-dark);text-decoration:none}
.btn svg{width:18px;height:18px}
.btn.ghost{background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.28)}
.btn.ghost:hover{background:rgba(255,255,255,.18)}
.btn.outline{background:#fff;color:var(--accent);border:1.5px solid var(--accent)}
.btn.outline:hover{background:var(--accent-light)}
.btn.danger{background:var(--red)}
.btn.danger:hover{background:#b91c1c}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.sm{padding:9px 18px;font-size:.9rem}

/* Setter inputs */
.setter{display:flex;gap:10px;justify-content:center;align-items:flex-end;flex-wrap:wrap;margin-top:6px}
.field{display:flex;flex-direction:column;align-items:center;gap:5px}
.field label{font-size:.78rem;text-transform:uppercase;letter-spacing:.6px;color:#94a3b8;font-weight:700}
.field input,.field select{width:96px;padding:11px 8px;font-size:1.5rem;font-weight:700;text-align:center;border-radius:11px;border:1.5px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);color:#fff;font-family:inherit;font-variant-numeric:tabular-nums}
.field select{font-size:1rem;font-weight:600}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.14)}
.field.wide input,.field.wide select{width:180px}
.field select option{background:var(--stage);color:#fff}
.opt-row{display:flex;gap:14px;justify-content:center;align-items:center;flex-wrap:wrap;margin-top:18px;color:#cbd5e1;font-size:.93rem}
.opt-row label{display:inline-flex;align-items:center;gap:7px;cursor:pointer}
.opt-row select,.opt-row input[type=text]{padding:8px 12px;border-radius:9px;border:1.5px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);color:#fff;font-family:inherit;font-size:.92rem}
.opt-row select option{background:var(--stage)}
.opt-row input[type=checkbox]{width:17px;height:17px;accent-color:var(--accent)}

/* Presets */
.presets{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:20px auto 0;max-width:900px}
.presets a,.presets button{padding:8px 15px;border-radius:999px;border:1.5px solid var(--border);background:#fff;color:var(--gray);font-weight:600;font-size:.89rem;cursor:pointer;font-family:inherit;transition:.15s}
.presets a:hover,.presets button:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}

/* Laps */
.laps{max-width:520px;margin:22px auto 0;text-align:left}
.laps table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:.95rem}
.laps th,.laps td{padding:9px 12px;border-bottom:1px solid rgba(255,255,255,.1)}
.laps th{color:#94a3b8;font-size:.76rem;text-transform:uppercase;letter-spacing:.6px}
.laps td{color:#e2e8f0;font-weight:600}
.laps tbody tr:first-child td{color:#a5b4fc}

/* World clock grid */
.wc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:14px;margin-top:24px}
.wc-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow);position:relative}
.wc-card .city{font-weight:700;font-size:1rem}
.wc-card .zone{color:var(--gray-light);font-size:.8rem;margin-bottom:6px}
.wc-card .t{font-size:1.7rem;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-1px}
.wc-card .d{color:var(--gray);font-size:.85rem}
.wc-card .rm{position:absolute;top:9px;right:10px;border:none;background:none;color:var(--gray-light);cursor:pointer;font-size:1.1rem;line-height:1;padding:2px 5px;border-radius:6px}
.wc-card .rm:hover{background:var(--bg);color:var(--red)}
.wc-add{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:22px}
.wc-add select{padding:11px 14px;border-radius:10px;border:1.5px solid var(--border);font-family:inherit;font-size:.95rem;min-width:260px;background:#fff;color:var(--ink)}

/* Sections */
section{padding:48px 0}
section.alt{background:var(--bg)}
.sec-title{font-size:1.75rem;font-weight:800;text-align:center;margin-bottom:10px;letter-spacing:-.5px}
.sec-sub{text-align:center;color:var(--gray);max-width:700px;margin:0 auto 34px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card .ico{width:44px;height:44px;border-radius:11px;background:var(--accent-light);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.card .ico svg{width:23px;height:23px;stroke:var(--accent)}
.card h3{font-size:1.06rem;margin-bottom:7px}
.card h3 a{color:var(--ink)}
.card p{color:var(--gray);font-size:.93rem}
.card .num{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:13px;font-size:.95rem}
@media(max-width:860px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:580px){.cards{grid-template-columns:1fr}}

/* Prose */
.prose{max-width:790px;margin:0 auto}
.prose h2{font-size:1.45rem;margin:32px 0 12px;letter-spacing:-.4px}
.prose h3{font-size:1.12rem;margin:22px 0 8px}
.prose p{margin-bottom:14px;color:#334155}
.prose ul,.prose ol{margin:0 0 14px 22px;color:#334155}
.prose li{margin-bottom:6px}
.prose strong{color:var(--ink)}
.prose table{width:100%;border-collapse:collapse;margin:14px 0 20px;font-size:.94rem}
.prose th,.prose td{border:1px solid var(--border);padding:10px 13px;text-align:left}
.prose thead th{background:var(--accent-light);font-weight:700}
.prose tbody tr:nth-child(even){background:var(--bg)}

/* Link grid (preset pages) */
.link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:10px;margin-top:8px}
.link-grid a{display:block;padding:11px 14px;border:1px solid var(--border);border-radius:11px;background:#fff;color:var(--ink);font-weight:600;font-size:.92rem;text-align:center;transition:.15s}
.link-grid a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none;background:var(--accent-light)}

/* FAQ */
.faq{max-width:790px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--border);border-radius:13px;margin-bottom:11px;padding:0 20px}
.faq summary{font-weight:600;padding:15px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.35rem;color:var(--accent);font-weight:400;flex:none}
.faq details[open] summary::after{content:"–"}
.faq details p{padding-bottom:15px;color:var(--gray)}

/* Blog cards */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.blog-grid{grid-template-columns:1fr}}
.blog-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:23px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.blog-card h2{font-size:1.05rem;margin-bottom:8px;line-height:1.4}
.blog-card h2 a{color:var(--ink)}
.blog-card p{color:var(--gray);font-size:.91rem;flex:1}
.blog-card .read{margin-top:12px;font-weight:600;font-size:.91rem}

/* CTA */
.cta{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);border-radius:var(--radius);padding:42px 30px;text-align:center;color:#fff}
.cta h2{font-size:1.55rem;margin-bottom:10px}
.cta p{opacity:.93;margin-bottom:20px}
.cta .btn{background:#fff;color:var(--accent)}
.cta .btn:hover{background:var(--accent-light)}

/* Footer */
footer{background:var(--stage);color:#cbd5e1;padding:42px 0 24px;margin-top:38px}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:28px;margin-bottom:26px}
.foot-grid .foot-h{color:#fff;font-size:.98rem;margin-bottom:11px;font-weight:700;line-height:1.3}
.foot-grid p{font-size:.9rem;color:#94a3b8}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:7px}
.foot-grid a{color:#cbd5e1;font-size:.9rem}
.foot-grid a:hover{color:#fff}
.foot-bottom{border-top:1px solid #1e293b;padding-top:18px;text-align:center;font-size:.84rem;color:#64748b}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* Misc */
.center{text-align:center}
.note{background:#fffbeb;border:1px solid #fde68a;border-radius:11px;padding:12px 16px;font-size:.92rem;max-width:900px;margin:16px auto 0;color:#78350f}
.hidden{display:none!important}
.breadcrumb{font-size:.88rem;color:var(--gray-light);padding:14px 0 0}
.breadcrumb a{color:var(--gray)}