:root{--bg:#f7f8fb;--surface:#fff;--surface-2:#f1f4f9;--text:#0f172a;--muted:#64748b;--line:#dbe3ef;--brand:#2563eb;--success:#0f766e;--danger:#dc2626;--shadow:0 20px 60px rgba(15,23,42,.08);--radius:24px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,#f8fbff 0%,#f7f8fb 100%);color:var(--text);min-height:100vh}a{color:inherit;text-decoration:none}img{max-width:100%}
.container{width:min(1180px,calc(100% - 32px));margin-inline:auto}.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.84);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,227,239,.85)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:78px}.brand{display:flex;align-items:center;gap:14px;font-weight:800;font-size:1.25rem;letter-spacing:-.02em}.brand-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#8b5cf6);display:grid;place-items:center;color:#fff;box-shadow:0 10px 30px rgba(37,99,235,.28)}.brand-mark svg{width:22px;height:22px}
.nav-links{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.nav-links a{padding:10px 14px;border-radius:999px;color:var(--muted);font-weight:600;font-size:.95rem}.nav-links a:hover,.nav-links a.active{background:var(--surface-2);color:var(--text)}
.button,.button-ghost{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:16px;border:1px solid transparent;padding:12px 18px;font-weight:700;cursor:pointer;transition:.2s ease;font-size:.96rem}.button{background:var(--brand);color:#fff;box-shadow:0 14px 30px rgba(37,99,235,.18)}.button:hover{transform:translateY(-1px);filter:brightness(1.02)}.button-ghost{background:var(--surface);border-color:var(--line);color:var(--text)}.button-ghost:hover{background:var(--surface-2)}
.hero{padding:42px 0 26px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}.card{background:var(--surface);border:1px solid rgba(219,227,239,.9);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:34px}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#ecf3ff;color:var(--brand);padding:8px 12px;border-radius:999px;font-weight:800;font-size:.82rem;letter-spacing:.01em}
h1{font-size:clamp(2.15rem,4vw,4.4rem);line-height:1.02;letter-spacing:-.05em;margin:18px 0 14px}.lead{color:var(--muted);font-size:1.08rem;line-height:1.7;max-width:62ch}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}.metric{padding:18px;border-radius:20px;background:var(--surface-2);border:1px solid var(--line)}.metric strong{display:block;font-size:1.35rem;letter-spacing:-.03em}.metric span{color:var(--muted);font-size:.92rem}
.panel{padding:24px}.mini-label{font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}.digital{font-family:"Courier New",monospace;font-weight:800;letter-spacing:.08em}.clock-hero{font-size:clamp(2.3rem,5vw,4.8rem);margin:10px 0}.date-line{color:var(--muted);font-weight:600}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.section{padding:18px 0 48px}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:18px}.section-head h2{font-size:clamp(1.5rem,2vw,2.1rem);letter-spacing:-.03em;margin:0}.section-head p{margin:6px 0 0;color:var(--muted);max-width:58ch;line-height:1.7}
.tool-card{padding:22px;display:flex;flex-direction:column;gap:14px}.tool-card .icon{width:46px;height:46px;border-radius:16px;background:linear-gradient(135deg,#e8f0ff,#f4eefe);display:grid;place-items:center;color:var(--brand)}.tool-card h3{margin:0;font-size:1.18rem;letter-spacing:-.02em}.tool-card p{margin:0;color:var(--muted);line-height:1.7}.tool-card a{margin-top:auto}
.app-shell{padding:24px}.tool-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.screen{background:linear-gradient(180deg,#fff 0%,#f9fbff 100%);padding:22px;border-radius:22px;border:1px solid var(--line)}
.display{background:#0f172a;color:#f8fafc;border-radius:24px;padding:28px;min-height:240px;display:grid;place-items:center;text-align:center}.display .big{font-size:clamp(2.4rem,5vw,5rem);line-height:1;font-family:"Courier New",monospace;font-weight:800;letter-spacing:.08em}.display .sub{margin-top:10px;color:#94a3b8;font-weight:600}
.controls{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.stack{display:grid;gap:14px}.label{display:block;color:var(--muted);font-weight:700;font-size:.95rem;margin-bottom:8px}input,select,textarea{width:100%;padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit}textarea{min-height:160px;resize:vertical}input:focus,select:focus,textarea:focus{outline:2px solid rgba(37,99,235,.15);border-color:#9bb8f7}
.inline{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.inline-2{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 12px;font-weight:700;color:var(--muted);cursor:pointer}.chip:hover{border-color:#9bb8f7;color:var(--brand)}
.list{display:grid;gap:12px}.list-item{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:16px 18px;border:1px solid var(--line);border-radius:18px;background:#fff}.list-item small,.muted{color:var(--muted)}
.notice{padding:16px 18px;border-radius:18px;background:#eff6ff;border:1px solid #cfe0ff;color:#1d4ed8;line-height:1.7}.success{background:#ecfdf5;border-color:#b7efcf;color:var(--success)}.danger{background:#fef2f2;border-color:#fecaca;color:var(--danger)}
.footer{padding:34px 0 50px;border-top:1px solid var(--line);margin-top:22px;background:rgba(255,255,255,.65)}.footer-grid{display:grid;grid-template-columns:1fr auto auto;gap:18px;align-items:start}.footer-links{display:flex;flex-wrap:wrap;gap:12px 18px;color:var(--muted);font-weight:600}
.badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-weight:800;font-size:.78rem}.logo-word{letter-spacing:-.04em}.copy-grid{display:grid;gap:18px}.content-card{padding:26px}.content-card h1,.content-card h2,.content-card h3{margin-top:0}.content-card p,.content-card li{color:#334155;line-height:1.8}.content-card ul{padding-left:20px}
@media (max-width:980px){.hero-grid,.tool-layout,.grid-3,.grid-2,.footer-grid,.hero-metrics,.inline,.inline-2{grid-template-columns:1fr}.nav{align-items:flex-start;padding:12px 0}.nav,.nav-links{flex-direction:column;align-items:flex-start}}
@media (max-width:640px){.container{width:min(100% - 20px,1180px)}.hero-card,.panel,.app-shell,.content-card{padding:20px}.display{padding:22px;min-height:210px}.button,.button-ghost{width:100%}.hero-actions,.controls{display:grid}}

.cluster-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.link-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.link-tile{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:#fff;font-weight:700;color:#334155}
.link-tile:hover{border-color:#9bb8f7;color:var(--brand);transform:translateY(-1px)}
.kicker{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);font-weight:800}
.reading-width{max-width:72ch}.faq-item{padding:16px 18px;border:1px solid var(--line);border-radius:18px;background:#fff}.faq-item+.faq-item{margin-top:10px}
.faq-item h3{margin:0 0 8px 0;font-size:1rem}.sidebar-card{padding:22px}.small-links{display:grid;gap:8px}.small-links a{color:var(--muted);font-weight:600}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.stat-pill{padding:12px 14px;border-radius:16px;background:var(--surface-2);border:1px solid var(--line)}
.page-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-weight:600;font-size:.92rem;margin-bottom:14px}.breadcrumbs a{color:var(--muted)}
.hero-mini{padding:24px}.city-clock{font-size:clamp(2.1rem,4vw,4rem);font-family:"Courier New",monospace;font-weight:800;letter-spacing:.08em}.city-date{font-weight:600;color:var(--muted)}
.city-offset{display:inline-flex;padding:7px 10px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-weight:800;font-size:.78rem}
@media (max-width:980px){.cluster-grid,.link-grid,.page-grid,.stat-row{grid-template-columns:1fr}}


.mobile-nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer;box-shadow:none;font-size:1.2rem;line-height:1}
.mobile-nav-toggle:hover{background:var(--surface-2)}
.mobile-nav-toggle .menu-close{display:none}
body.nav-open .mobile-nav-toggle .menu-open{display:none}
body.nav-open .mobile-nav-toggle .menu-close{display:inline}
@media (max-width:980px){
  .topbar{overflow:visible}
  .nav{position:relative;align-items:center;padding:12px 0;min-height:72px}
  .nav .brand{flex:1;min-width:0}
  .mobile-nav-toggle{display:inline-flex;flex:0 0 auto}
  .nav-links{display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:60;background:rgba(255,255,255,.98);backdrop-filter:blur(16px);border:1px solid rgba(219,227,239,.95);border-radius:20px;box-shadow:0 18px 40px rgba(15,23,42,.12);padding:10px;max-height:min(70vh,420px);overflow:auto}
  .nav-links a{display:block;width:100%;padding:12px 14px;border-radius:14px}
  body.nav-open .nav-links{display:grid;grid-template-columns:1fr;gap:6px}
}

.alarm-time-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:12px}
.alarm-hidden-time{position:absolute!important;opacity:0;pointer-events:none;width:1px;height:1px;padding:0;margin:0;border:0}
@media (max-width:640px){.alarm-time-grid{grid-template-columns:1fr}}


.alarm-options{display:grid;gap:12px;margin-top:12px}
.alarm-radio-group{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.alarm-radio{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:#fff;font-weight:700;color:#334155;cursor:pointer}
.alarm-radio input{width:auto;margin:0}
.alarm-warning{color:#b45309;font-weight:800;font-size:.88rem}
@media (max-width:640px){.alarm-radio-group{grid-template-columns:1fr}}