@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
  color-scheme: dark;
  --bg: #080b0d;
  --panel: #111619;
  --panel-soft: #171d1f;
  --line: rgba(226, 213, 189, 0.22);
  --line-strong: rgba(226, 213, 189, 0.58);
  --text: #eee8dd;
  --muted: #98a09f;
  --faint: #5c6765;
  --accent: #d99a63;
  --accent-bright: #f1bc80;
  --signal: #8fe0b4;
  --mono: 'DM Mono', 'SFMono-Regular', Consolas, monospace;
  --sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

* { box-sizing: border-box; }

html { height: 100%; overflow: hidden; scroll-behavior: smooth; }

body {
  min-width: 320px;
  height: 100dvh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  overflow: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 44px 44px;
  content: '';
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 85%);
}

.shell {
  position: relative;
  display: grid;
  height: 100dvh;
  min-height: 0;
  padding: 18px 24px;
  place-items: center;
  overflow: hidden;
}

.ambient { position: absolute; border-radius: 50%; filter: blur(1px); pointer-events: none; }
.ambient-one { width: 360px; height: 360px; top: -160px; right: -120px; background: radial-gradient(circle, rgba(217,154,99,.14), transparent 68%); }
.ambient-two { width: 440px; height: 440px; bottom: -240px; left: -170px; background: radial-gradient(circle, rgba(86,122,117,.11), transparent 68%); }

.panel {
  position: relative;
  width: min(100%, 920px);
  height: 100%;
  padding: 27px clamp(24px, 5vw, 64px) 20px;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(23,29,31,.97), rgba(11,14,15,.97));
  box-shadow: 0 24px 80px rgba(0,0,0,.48), inset 0 0 0 1px rgba(255,255,255,.018);
  overflow: hidden;
}

.corner { position: absolute; width: 23px; height: 23px; border-color: var(--line-strong); }
.corner-tl { top: 13px; left: 13px; border-top: 2px solid; border-left: 2px solid; }
.corner-tr { top: 13px; right: 13px; border-top: 2px solid; border-right: 2px solid; }
.corner-bl { bottom: 13px; left: 13px; border-bottom: 2px solid; border-left: 2px solid; }
.corner-br { right: 13px; bottom: 13px; border-right: 2px solid; border-bottom: 2px solid; }

.topbar, .footer, .status-line, .time-card-foot { font-family: var(--mono); }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 0 0 20px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; }
.brand-mark { display: grid; width: 32px; height: 26px; border: 1px solid var(--accent); color: var(--accent-bright); place-items: center; font-size: 12px; letter-spacing: -.08em; }
.brand-name { font-family: var(--sans); font-size: 14px; font-weight: 700; letter-spacing: .08em; }
.topbar-meta { display: flex; align-items: center; gap: 8px; }
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 14px var(--signal); }

.hero { padding: 38px 0 24px; text-align: center; }
.eyebrow { margin: 0 0 17px; color: var(--accent); font: 500 11px var(--mono); letter-spacing: .2em; }
h1 { margin: 0; font-size: clamp(38px, 7vw, 74px); font-weight: 900; letter-spacing: -.08em; line-height: 1.05; }
h1 span { color: var(--accent-bright); font-family: var(--mono); font-size: 1em; letter-spacing: -.12em; }
.subtitle { margin: 18px 0 0; color: var(--muted); font: 12px var(--mono); letter-spacing: .12em; }
.subtitle i { margin: 0 8px; color: var(--accent); font-style: normal; }

.time-card { padding: 19px clamp(20px, 6vw, 84px) 15px; border: 1px solid var(--line-strong); background: rgba(10,13,14,.45); text-align: center; }
.time-card-label { color: var(--muted); font-size: 12px; letter-spacing: .12em; }
.time-card-label span { margin-left: 10px; color: var(--faint); font: 10px var(--mono); letter-spacing: .05em; }
.clock { display: block; margin: 9px 0 14px; color: var(--text); font: 500 clamp(44px, 10vw, 82px)/1 var(--mono); letter-spacing: .08em; }
.time-card-foot { display: flex; justify-content: space-between; gap: 12px; color: var(--faint); font-size: 10px; letter-spacing: .1em; text-align: left; }
.temperature { color: var(--signal); }
.temperature b { display: inline-block; width: 5px; height: 5px; margin-right: 4px; border-radius: 50%; background: var(--signal); vertical-align: 2px; }

.section-heading { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 22px; margin: 25px 0 13px; color: var(--muted); }
.section-heading span { height: 1px; background: var(--line); }
.section-heading h2 { margin: 0; font-size: 13px; font-weight: 500; letter-spacing: .28em; }

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature { position: relative; display: grid; grid-template-columns: 32px 1fr 18px; gap: 12px; min-height: 92px; padding: 16px 18px; border: 1px solid var(--line); color: var(--text); text-decoration: none; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.feature:hover, .feature:focus-visible { border-color: var(--accent); background: rgba(217,154,99,.07); transform: translateY(-2px); outline: none; }
.feature-index { color: var(--accent); font: 11px var(--mono); }
.feature h3 { margin: 0 0 8px; font-size: 15px; font-weight: 700; letter-spacing: .02em; }
.feature p { max-width: 34ch; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.feature-arrow { align-self: start; color: var(--faint); font: 17px var(--mono); transition: color .2s ease; }
.feature:hover .feature-arrow, .feature:focus-visible .feature-arrow { color: var(--accent-bright); }

.status-line { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 16px; padding: 12px 0 0; border-top: 1px solid var(--line); }
.status-copy { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px; }
.status-label { color: var(--accent); font-size: 10px; letter-spacing: .1em; }
.status-copy strong { color: var(--signal); font: 500 12px var(--mono); }
.status-copy > span:last-child { color: var(--faint); font-size: 10px; }
.status-action { color: var(--text); font: 11px var(--mono); letter-spacing: .05em; text-decoration: none; white-space: nowrap; }
.status-action span { margin-left: 10px; color: var(--accent); font-size: 16px; }
.status-action:hover { color: var(--accent-bright); }

.footer { display: flex; justify-content: space-between; gap: 16px; margin-top: 21px; color: var(--faint); font-size: 9px; letter-spacing: .12em; }

@media (max-width: 640px) {
  .shell { padding: 10px 12px; }
  .panel { padding: 22px 18px 18px; }
  .topbar { align-items: flex-start; flex-direction: column; gap: 14px; }
  .topbar-meta { align-self: flex-end; }
  .hero { padding: 28px 0 21px; }
  h1 { letter-spacing: -.1em; }
  .subtitle { font-size: 10px; letter-spacing: .04em; }
  .subtitle i { margin: 0 4px; }
  .time-card { padding-inline: 12px; }
  .clock { font-size: clamp(35px, 13vw, 62px); letter-spacing: .02em; }
  .time-card-foot { flex-direction: column; gap: 7px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature { min-height: 82px; }
  .feature p { line-height: 1.45; }
  .status-line { align-items: flex-start; flex-direction: column; }
  .footer { flex-wrap: wrap; margin-top: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .feature { transition: none; }
}