:root {
  --paper: #f4f1ea;
  --paper-2: #ebe6db;
  --ink: #18202b;
  --muted: #5c6570;
  --line: #d5cfc3;
  --navy: #1e3a5f;
  --navy-2: #16304e;
  --accent: #9a4a28;
  --white: #fffcf7;
  --ok: #2f6b4f;
  --link: #8b3a1f;
  --link-hover: #5c2412;
  --radius: 10px;
  --font-serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --font-sans: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --shadow: 0 18px 40px rgba(24, 32, 43, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
  background: var(--paper);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-sans);
  background: var(--paper);
  line-height: 1.6;
}

a:link,
a:visited {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus-visible {
  color: var(--link-hover);
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--line);
}

.brand,
.brand:link,
.brand:visited {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand svg {
  display: block;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 0.95rem;
}

.nav-links a:link,
.nav-links a:visited {
  color: var(--ink);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a[aria-current="page"] {
  color: var(--link);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  margin-inline-start: 4px;
}

.lang-switch select {
  font: inherit;
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
}

html[lang="ar"] body,
html[lang="zh"] body,
html[lang="ja"] body {
  font-family: "Noto Sans Arabic", "Noto Sans SC", "Noto Sans JP", var(--font-sans);
}

html[lang="ar"] body {
  font-family: "Noto Sans Arabic", var(--font-sans);
}

html[lang="zh"] body {
  font-family: "Noto Sans SC", var(--font-sans);
}

html[lang="ja"] body {
  font-family: "Noto Sans JP", var(--font-sans);
}

.btn,
a.btn:link,
a.btn:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--navy);
  background: var(--navy);
  color: var(--white);
  text-decoration: none;
  font: inherit;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
}

.btn:hover,
a.btn:hover {
  background: var(--navy-2);
  color: var(--white);
}

.btn-ghost,
a.btn-ghost:link,
a.btn-ghost:visited {
  background: transparent;
  color: var(--navy);
}

.btn-ghost:hover,
a.btn-ghost:hover {
  background: var(--paper-2);
  color: var(--navy);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: start;
  padding: 48px 0 56px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.lede {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 42rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.note {
  margin: 0;
  padding: 14px 16px;
  background: var(--paper-2);
  border-left: 3px solid var(--navy);
  color: var(--ink);
  font-size: 0.95rem;
}

.console {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.console-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timer {
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.desk {
  position: relative;
  height: 168px;
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(180deg, #f7f4ee, #ece7dc);
  border: 1px solid var(--line);
}

#path {
  width: 100%;
  height: 100%;
  display: block;
}

.desk-caption {
  margin: 8px 0 14px;
  font-size: 0.82rem;
  color: var(--muted);
}

#start {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 14px;
}

body.is-on #start {
  background: var(--accent);
  border-color: var(--accent);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.controls label {
  display: flex;
  align-items: center;
  gap: 8px;
}

input[type="time"] {
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 8px;
  font: inherit;
}

.lamps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.lamp {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #8a9289;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #c9cdc8;
}

.lamp.on {
  color: var(--ok);
}

.lamp.on .dot {
  background: var(--ok);
}

.safe {
  margin: 12px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.section {
  padding: 8px 0 56px;
}

.section h2,
.prose h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.section h3,
.prose h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin: 28px 0 10px;
}

.section p,
.prose p,
.section li,
.prose li {
  color: var(--muted);
}

.section > p,
.prose > p {
  max-width: 46rem;
}

.grid-2,
.grid-3,
.guides {
  display: grid;
  gap: 16px;
}

.grid-2 {
  grid-template-columns: 1fr 1fr;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.guides {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.card h2,
.card h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-family: var(--font-serif);
  font-weight: 500;
}

.card p {
  margin: 0;
}

.card a.more {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
  text-decoration: none;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 0;
  list-style: none;
}

.steps li {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
}

.steps strong {
  display: block;
  margin-bottom: 6px;
  color: var(--navy);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--white);
  border: 1px solid var(--line);
}

.compare th,
.compare td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.compare th {
  background: var(--navy);
  color: var(--white);
  font-weight: 600;
}

.compare tr:last-child td {
  border-bottom: 0;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 14px 0;
  background: transparent;
}

.faq summary {
  cursor: pointer;
  font-weight: 650;
}

.faq p {
  margin: 8px 0 0;
}

.prose {
  padding: 36px 0 72px;
  max-width: 46rem;
}

.prose .btn {
  margin: 0 10px 10px 0;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer a:link,
.footer a:visited {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.contact-hero {
  padding-bottom: 12px;
}

.contact-hero p {
  max-width: 42rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 20px;
  align-items: start;
  padding-bottom: 56px;
}

.form-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  display: grid;
  gap: 14px;
}

.form-card label {
  display: grid;
  gap: 6px;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.92rem;
}

.form-card input[type="text"],
.form-card input[type="email"],
.form-card select,
.form-card textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 400;
  color: var(--ink);
  background: var(--white);
}

.form-card textarea {
  resize: vertical;
  min-height: 8rem;
}

.form-card .check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-weight: 400;
  color: var(--muted);
}

.form-card .check input {
  margin-top: 4px;
}

.form-card .hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin: 0;
  font-weight: 400;
  font-size: 0.95rem;
  min-height: 1.4em;
}

.form-status.pending,
.form-status.warn {
  color: var(--accent);
}

.form-status.ok {
  color: var(--ok);
}

.form-status.err {
  color: #9a1f2b;
}

@media (max-width: 860px) {
  .hero,
  .grid-2,
  .grid-3,
  .guides,
  .steps,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer {
    flex-direction: column;
  }
}