:root {
  --color-bg: #f2f5f6;
  --color-surface: #ffffff;
  --color-ink: #14212b;
  --color-muted: #4b5a65;
  --color-line: #d3dce1;
  --color-cool: #1d5b86;
  --color-cool-soft: #e2edf5;
  --color-warm: #a8481a;
  --color-warm-soft: #f7e8df;
  --color-neutral-mark: #6b7a85;
  --color-band: #14212b;
  --color-band-text: #eef3f6;
  --color-band-muted: #b7c4cd;
  --color-star: #a8481a;
  --color-focus: #1d5b86;
  --color-shadow: rgba(20, 33, 43, 0.08);

  --font-head: "Avenir Next", "Avenir", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font: 17px/1.6 var(--font-body);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-cool); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; border-radius: 8px; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }

/* ---------- header ---------- */
.site-head {
  position: sticky; top: 0; z-index: 10;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}
.head-row {
  display: flex; align-items: center; gap: 20px;
  min-height: 68px;
}
.head-phone {
  display: inline-flex; align-items: center; min-height: 40px;
  padding: 0 16px; border-radius: 999px;
  background: var(--color-ink); color: var(--color-surface);
  font-weight: 700; text-decoration: none; white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.wordmark {
  font-family: var(--font-head); font-weight: 800; font-size: 1.15rem;
  color: var(--color-ink); text-decoration: none; white-space: nowrap;
}
.wordmark small { font-weight: 600; font-size: 0.75rem; color: var(--color-muted); margin-left: 3px; }
.nav { margin-left: auto; display: flex; gap: 4px; }
.nav a {
  display: inline-flex; align-items: center; min-height: 40px;
  padding: 0 14px; border-radius: 10px;
  color: var(--color-ink); text-decoration: none; font-weight: 600; font-size: 0.95rem;
}
.nav a:hover { background: var(--color-cool-soft); }
.nav a[aria-current="page"] { background: var(--color-surface); box-shadow: inset 0 0 0 1px var(--color-line); }

@media (max-width: 760px) {
  .head-row { flex-wrap: wrap; gap: 10px 14px; padding: 10px 0; }
  .nav { margin-left: 0; width: 100%; justify-content: space-between; }
  .nav a { flex: 1; justify-content: center; padding: 0 6px; font-size: 0.9rem; }
  .site-head { position: static; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px; border-radius: 999px;
  font-weight: 700; text-decoration: none; font-size: 1rem;
}
.btn-primary { background: var(--color-cool); color: var(--color-surface); }
.btn-primary:hover { background: var(--color-ink); }
.btn-ghost { color: var(--color-ink); box-shadow: inset 0 0 0 2px var(--color-ink); }
.btn-ghost:hover { background: var(--color-surface); }

/* ---------- hero ---------- */
.hero { padding: 56px 0 64px; }
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center;
}
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
.hero h1 .cool { color: var(--color-cool); }
.hero h1 .warm { color: var(--color-warm); }
.hero-sub { margin-top: 16px; font-size: 1.15rem; color: var(--color-muted); max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.rating-line {
  margin-top: 28px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px;
  font-size: 0.98rem; color: var(--color-muted);
}
.rating-line strong { color: var(--color-ink); font-size: 1.05rem; }
.stars { color: var(--color-star); letter-spacing: 2px; }

.photo-fig { margin: 0; }
.photo-fig img {
  width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 60% 40%;
  border-radius: 22px;
}
.photo-fig figcaption { margin-top: 8px; font-size: 0.9rem; color: var(--color-muted); }
.stock-label { display: block; font-size: 0.78rem; color: var(--color-muted); margin-top: 2px; }

@media (max-width: 860px) {
  .hero { padding: 36px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .photo-fig img { aspect-ratio: 4 / 3; }
}

/* ---------- sections ---------- */
.section { padding: 72px 0; }
.section-tight { padding: 56px 0; }
.section-white { background: var(--color-surface); }
.head-pair h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800; }
.head-pair p { margin-top: 12px; color: var(--color-muted); max-width: 40em; font-size: 1.05rem; }
.head-pair + * { margin-top: 36px; }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-copy p + p { margin-top: 16px; }
.about-copy .about-lead { margin-top: 24px; }
.facts { margin: 0; padding: 0; list-style: none; border-radius: 16px; background: var(--color-bg); }
.facts li {
  display: grid; grid-template-columns: 9.5em 1fr; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--color-line);
}
.facts li:last-child { border-bottom: 0; }
.facts dt, .facts .k { font-weight: 700; }
.facts .v { color: var(--color-muted); }
.facts .v a { font-weight: 700; }
@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .facts li { grid-template-columns: 1fr; gap: 2px; }
}

/* ---------- cool / warm split (equipment by season) ---------- */
.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.split-col { border-radius: 18px; padding: 24px; }
.split-col h3 { font-size: 1.3rem; }
.split-col .what { margin-top: 8px; color: var(--color-muted); }
.split-col ul { margin: 16px 0 0; padding: 0; list-style: none; }
.split-col li { padding: 8px 0; border-top: 1px solid var(--color-line); }
.split-cool { background: var(--color-cool-soft); }
.split-cool h3 { color: var(--color-cool); }
.split-warm { background: var(--color-warm-soft); }
.split-warm h3 { color: var(--color-warm); }
.split-both {
  grid-column: 1 / -1; border-radius: 18px; padding: 22px 24px;
  background: linear-gradient(90deg, var(--color-cool-soft), var(--color-warm-soft));
  display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; justify-content: space-between;
}
.split-both h3 { font-size: 1.3rem; }
.split-both p { color: var(--color-muted); max-width: 36em; }
.split-all {
  grid-column: 1 / -1; border-radius: 18px; padding: 20px 24px;
  background: var(--color-surface); box-shadow: inset 0 0 0 1px var(--color-line);
  display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; justify-content: space-between;
}
.split-all h3 { font-size: 1.2rem; }
.split-all p { color: var(--color-muted); max-width: 36em; }
@media (max-width: 640px) { .split { grid-template-columns: 1fr; } }

/* ---------- review timeline (signature) ---------- */
.timeline {
  position: relative; margin-top: 36px; padding: 28px 0 8px;
}
.tl-track {
  position: relative; height: 64px;
  border-bottom: 2px solid var(--color-ink);
}
.tl-mark {
  position: absolute; bottom: 0; width: 14px; height: 14px; margin-left: -7px;
  border-radius: 50%; transform: translateY(50%);
  border: 2px solid var(--color-surface);
}
.tl-mark.stack { bottom: 20px; }
.tl-mark.cool { background: var(--color-cool); }
.tl-mark.warm { background: var(--color-warm); }
.tl-mark.system { background: linear-gradient(90deg, var(--color-cool) 50%, var(--color-warm) 50%); }
.tl-mark.general { background: var(--color-neutral-mark); }
.tl-years { position: relative; height: 28px; margin-top: 8px; font-size: 0.85rem; color: var(--color-muted); font-variant-numeric: tabular-nums; }
.tl-years span { position: absolute; transform: translateX(-50%); }
.tl-key { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 16px; font-size: 0.92rem; color: var(--color-muted); }
.tl-key span { display: inline-flex; align-items: center; gap: 8px; }
.tl-key i { display: inline-block; width: 12px; height: 12px; border-radius: 50%; }
.tl-key .cool { background: var(--color-cool); }
.tl-key .warm { background: var(--color-warm); }
.tl-key .system { background: linear-gradient(90deg, var(--color-cool) 50%, var(--color-warm) 50%); }
.tl-key .general { background: var(--color-neutral-mark); }
@media (max-width: 560px) {
  .tl-years span:nth-child(even) { visibility: hidden; }
}

.quote-row { display: grid; grid-template-columns: 1.4fr 1fr; gap: 14px; margin-top: 32px; }
.quote {
  margin: 0; padding: 24px; border-radius: 18px; background: var(--color-bg);
}
.quote p { font-size: 1.1rem; }
.quote footer { margin-top: 12px; font-size: 0.9rem; color: var(--color-muted); }
.quote.lead { border-left: 6px solid var(--color-cool); }
@media (max-width: 760px) { .quote-row { grid-template-columns: 1fr; } }
.after-link { margin-top: 28px; }

/* ---------- services page matrix ---------- */
.matrix-wrap { overflow-x: auto; border-radius: 18px; box-shadow: inset 0 0 0 1px var(--color-line); background: var(--color-surface); }
.matrix { width: 100%; border-collapse: collapse; min-width: 520px; }
.matrix th, .matrix td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--color-line); }
.matrix tr:last-child th, .matrix tr:last-child td { border-bottom: 0; }
.matrix thead th { font-family: var(--font-head); font-size: 0.95rem; background: var(--color-bg); }
.matrix tbody th { font-family: var(--font-head); font-size: 1.05rem; }
.matrix td { color: var(--color-muted); }
.matrix .yes { color: var(--color-ink); font-weight: 700; }
.row-cool th { color: var(--color-cool); }
.row-warm th { color: var(--color-warm); }
.matrix-note { margin-top: 12px; font-size: 0.92rem; color: var(--color-muted); }

.svc-list { display: grid; gap: 14px; }
.svc {
  display: grid; grid-template-columns: 14em 1fr; gap: 24px;
  padding: 24px; border-radius: 16px; background: var(--color-bg);
}
.svc h3 { font-size: 1.2rem; }
.svc .tag { display: inline-block; margin-top: 8px; padding: 3px 10px; border-radius: 999px; font-size: 0.82rem; font-weight: 700; }
.svc .tag.cool { background: var(--color-cool-soft); color: var(--color-cool); }
.svc .tag.warm { background: var(--color-warm-soft); color: var(--color-warm); }
.svc .tag.both { background: linear-gradient(90deg, var(--color-cool-soft), var(--color-warm-soft)); color: var(--color-ink); }
.svc p { color: var(--color-muted); }
@media (max-width: 680px) { .svc { grid-template-columns: 1fr; gap: 8px; } }

/* ---------- reviews page log ---------- */
.log { list-style: none; margin: 0; padding: 0; position: relative; }
.log::before {
  content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--color-line);
}
.log-year { position: relative; padding: 24px 0 8px 36px; font-family: var(--font-head); font-weight: 800; font-size: 1.4rem; }
.log-year::before {
  content: ""; position: absolute; left: 0; top: 30px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--color-ink);
}
.log-item { position: relative; padding: 8px 0 8px 36px; }
.log-item .dot {
  position: absolute; left: 3px; top: 30px; width: 10px; height: 10px; border-radius: 50%;
}
.log-item .dot.cool { background: var(--color-cool); }
.log-item .dot.warm { background: var(--color-warm); }
.log-item .dot.system { background: linear-gradient(90deg, var(--color-cool) 50%, var(--color-warm) 50%); }
.log-item .dot.general { background: var(--color-neutral-mark); }
.log-card { padding: 18px 22px; border-radius: 14px; background: var(--color-surface); }
.log-card h3 { font-size: 1.08rem; }
.log-card .meta { margin-top: 4px; font-size: 0.88rem; color: var(--color-muted); }
.log-card p { margin-top: 10px; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 20px; }
.contact-card { padding: 32px; border-radius: 20px; background: var(--color-surface); }
.big-phone {
  display: inline-flex; align-items: center; min-height: 56px;
  font-family: var(--font-head); font-weight: 800; font-size: clamp(1.8rem, 5vw, 2.6rem);
  color: var(--color-cool); text-decoration: none; font-variant-numeric: tabular-nums;
}
.contact-card h2 { font-size: 1.4rem; }
.contact-card h2 + p { margin-top: 8px; color: var(--color-muted); }
.contact-card address { font-style: normal; margin-top: 12px; font-size: 1.1rem; }
.contact-card .btn { margin-top: 20px; }
.ready { margin: 16px 0 0; padding-left: 0; list-style: none; }
.ready li { padding: 10px 0; border-top: 1px solid var(--color-line); color: var(--color-muted); }
.ready li strong { color: var(--color-ink); }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } .contact-card { padding: 24px; } }

/* ---------- closing band + footer ---------- */
.band { background: var(--color-band); color: var(--color-band-text); padding: 56px 0; }
.band-row { display: flex; flex-wrap: wrap; gap: 20px 40px; align-items: center; justify-content: space-between; }
.band h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
.band h2 + p { margin-top: 8px; color: var(--color-band-muted); }
.band .btn { background: var(--color-surface); color: var(--color-ink); font-size: 1.1rem; }
.band .btn:hover { background: var(--color-cool-soft); }

.site-foot { padding: 28px 0 36px; font-size: 0.9rem; color: var(--color-muted); }
.foot-row { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-foot a { display: inline-flex; align-items: center; min-height: 34px; }

.page-title { font-size: clamp(2rem, 4.5vw, 3rem); font-weight: 800; }
.section-flush { padding-top: 0; }
.contact-card .contact-sub { margin-top: 28px; }
.timeline { padding-inline: 4px; }

/* ---------- motion ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.in { opacity: 1; transform: none; transition: none; }
}