/* ===================================================================
   一般社団法人みらい設計 — corporate site
   コンセプト: 社名「みらい設計」= 未来の設計図。青写真(blueprint)の
   質感 — 方眼、罫線、図面の register mark — を紙面全体のモチーフに。
   ===================================================================*/

@import url("https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@500;600;800&display=swap");

:root {
  --ink: #16324f;
  --paper: #f3f5f2;
  --panel: #fbfcfa;
  --line: #b7cbd8;
  --line-faint: rgba(22, 50, 79, 0.08);
  --accent: #c1572e;
  --accent-soft: #f3ded1;
  --sub: #56718a;
  --focus: #2f7fb0;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e9eef2;
    --paper: #0f2036;
    --panel: #142943;
    --line: #2d4a63;
    --line-faint: rgba(233, 238, 242, 0.08);
    --accent: #e37e4d;
    --accent-soft: #3a2a22;
    --sub: #9db2c4;
    --focus: #6fb6e0;
  }
}

:root[data-theme="dark"] {
  --ink: #e9eef2;
  --paper: #0f2036;
  --panel: #142943;
  --line: #2d4a63;
  --line-faint: rgba(233, 238, 242, 0.08);
  --accent: #e37e4d;
  --accent-soft: #3a2a22;
  --sub: #9db2c4;
  --focus: #6fb6e0;
}

* { box-sizing: border-box; }

html { text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.9;
  font-size: 15px;
  background-image: radial-gradient(circle, var(--line-faint) 1.1px, transparent 1.1px);
  background-size: 22px 22px;
  background-attachment: fixed;
}

@media (prefers-reduced-motion: no-preference) {
  a, button, .panel { transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease; }
}

h1, h2, h3 {
  font-family: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 600;
  text-wrap: balance;
  margin: 0;
}

a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

.label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.label::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--accent);
}

/* ---------- title block (nav) ---------- */
.titleblock {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.titleblock-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark {
  width: 44px;
  height: 44px;
  flex: none;
  position: relative;
  border-radius: 50%;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand-mark svg { width: 24px; height: 24px; display: block; }
.brand-name {
  font-family: "Shippori Mincho", serif;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.3;
}
.brand-en {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent);
}
nav.primary {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
nav.primary a {
  text-decoration: none;
  font-size: 13px;
  color: var(--sub);
  padding: 8px 12px;
  border-radius: 3px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
nav.primary a:hover { color: var(--ink); background: var(--line-faint); }
nav.primary a[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--accent);
}

/* ---------- layout ---------- */
main { max-width: 980px; margin: 0 auto; padding: 0 24px 80px; }

.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 56px;
  position: relative;
}
.hero h1 {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.5;
  margin-top: 18px;
  max-width: 14em;
}
.hero .lead {
  margin-top: 20px;
  color: var(--sub);
  font-size: 15px;
  max-width: 40em;
}
.hero-cta { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 3px;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.page-head {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 48px;
}
.page-head h1 { font-size: clamp(26px, 4vw, 36px); margin-top: 16px; }
.page-head .lead { margin-top: 14px; color: var(--sub); max-width: 42em; }

/* ---------- panel: a page from the sketchbook, not a machined part ---------- */
.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 3px 14px 3px 14px;
  padding: 32px;
}
.panel::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 22px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.8;
}
.panel::after,
.panel .tick-br, .panel .tick-bl { display: none; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.stack { display: flex; flex-direction: column; gap: 20px; }

section.block { margin-bottom: 56px; }
section.block h2 { font-size: 22px; margin-top: 10px; }
section.block .kicker { margin-bottom: 0; }

.service-card h3 {
  font-size: 17px;
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.service-card .no {
  font-family: "Shippori Mincho", serif;
  color: var(--accent);
  font-size: 13px;
}
.service-card p { margin: 0; color: var(--sub); font-size: 13.5px; }
.tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 9px;
  border-radius: 999px;
  vertical-align: middle;
}
.service-card .tag { margin-top: 14px; }

table.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
table.spec th, table.spec td { text-align: left; padding: 14px 16px; border-top: 1px solid var(--line); vertical-align: top; }
table.spec tr:first-child th, table.spec tr:first-child td { border-top: none; }
table.spec th { width: 8.5em; color: var(--sub); font-weight: 600; white-space: nowrap; }

.value-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.value-list li {
  padding: 26px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 4.5em 1fr;
  gap: 20px;
}
.value-list li:first-child { border-top: none; padding-top: 0; }
.value-list .num {
  font-family: "Shippori Mincho", serif;
  color: var(--accent);
  font-size: 22px;
}
.value-list h3 { font-size: 16px; margin-bottom: 8px; font-family: "Hiragino Kaku Gothic ProN", sans-serif; }
.value-list p { margin: 0; color: var(--sub); font-size: 13.5px; }

.quote-block {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 24px;
  margin: 40px 0;
}
.quote-block p {
  font-family: "Shippori Mincho", serif;
  font-size: 19px;
  line-height: 1.9;
  color: var(--ink);
  margin: 0;
}

.contact-methods { display: flex; flex-direction: column; gap: 0; }
.contact-methods .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.contact-methods .row:first-child { border-top: none; padding-top: 0; }
.contact-methods .row .k { font-size: 12px; letter-spacing: 0.08em; color: var(--sub); }
.contact-methods .row .v { font-size: 14.5px; }
.contact-methods .row a { color: var(--accent); text-decoration: none; }
.contact-methods .row a:hover { text-decoration: underline; }

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 40px;
}
.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 40px 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--sub);
}
footer.site a { text-decoration: none; color: var(--sub); }
footer.site a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- contact form ---------- */
.form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 22px; }
.form-field:last-child { margin-bottom: 0; }
.form-field label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-field .required {
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 1px 7px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.form-field .optional { font-size: 10px; color: var(--sub); font-weight: 500; }
.form-field input[type="text"],
.form-field input[type="email"],
.form-field select,
.form-field textarea {
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 14px;
  width: 100%;
}
.form-field textarea { resize: vertical; min-height: 110px; line-height: 1.7; }
.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
.form-note { font-size: 12px; color: var(--sub); margin-top: 18px; }

.legal-note {
  background: var(--accent-soft);
  border-radius: 3px;
  padding: 14px 18px;
  font-size: 12px;
  color: var(--ink);
  margin-bottom: 28px;
}
.todo { background: var(--accent-soft); padding: 1px 5px; border-radius: 3px; }