/* セミオーダー開発のサービスページ・ヒアリングフォーム共通。色・余白はトップページ（public/index.html）に合わせる */
:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --text: #16171a;
  --muted: #5b5d66;
  --faint: #8a8c94;
  --line: #e6e7eb;
  --line-strong: #cfd1d7;
  --radius: 14px;
  --c1: #4f5bff;
  --c2: #0891b2;
  --c3: #7c3aed;
  --grad: linear-gradient(90deg, var(--c1), var(--c2));
  --error: #d92d20;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Noto Sans JP", system-ui, sans-serif; line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--c1); text-underline-offset: 4px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.en { font-family: Inter, sans-serif; }
.nw { white-space: nowrap; display: inline-block; }

header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(140%) blur(12px); -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { font-family: Inter, sans-serif; font-weight: 600; font-size: 19px; color: var(--text); text-decoration: none; letter-spacing: .04em; white-space: nowrap; }
.nav ul { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav ul a { color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 500; white-space: nowrap; }
.nav ul a:hover { color: var(--text); }
.nav .cta { color: #fff; background: var(--grad); padding: 6px 16px; border-radius: 999px; }
.nav .cta:hover { color: #fff; }

.hero { position: relative; overflow: hidden; padding: 120px 0 104px; border-bottom: 1px solid var(--line); }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, #000 20%, transparent 75%);
  opacity: .55;
}
.hero::after {
  content: ""; position: absolute; width: 760px; height: 760px; right: -220px; top: -260px;
  background: radial-gradient(circle at 40% 45%, rgba(109,124,255,.26), transparent 55%), radial-gradient(circle at 65% 65%, rgba(34,211,238,.16), transparent 50%);
  filter: blur(20px); pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: Inter, sans-serif; color: var(--muted); font-weight: 500; letter-spacing: .18em; font-size: 12px; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 2px; border-radius: 2px; background: var(--grad); }
.hero h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.35; font-weight: 700; margin: 20px 0 24px; }
.hero h1 .accent { background: linear-gradient(90deg, var(--c1), var(--c2) 60%, #0284c7); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--muted); max-width: 640px; margin: 0; font-size: 16px; }
.hero .points { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 0; padding: 0; list-style: none; }
.hero .points li { font-size: 13px; font-weight: 500; padding: 4px 14px; border-radius: 999px; border: 1px solid var(--line-strong); background: #fff; }

section { padding: 96px 0; border-bottom: 1px solid var(--line); }
.sec-head { display: flex; align-items: baseline; gap: 20px; margin-bottom: 40px; }
.sec-label { font-family: Inter, sans-serif; color: var(--faint); font-weight: 500; letter-spacing: .18em; font-size: 12px; }
h2 { font-size: 28px; margin: 0; line-height: 1.4; font-weight: 700; position: relative; padding-left: 16px; }
h2::before { content: ""; position: absolute; left: 0; top: .3em; bottom: .3em; width: 3px; border-radius: 3px; background: linear-gradient(180deg, var(--c1), var(--c2)); }
.lead { color: var(--muted); margin: -16px 0 36px; max-width: 760px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 15px 34px; border-radius: 999px; border: 0; cursor: pointer;
  background: linear-gradient(90deg, var(--c1), #4f9dff 55%, var(--c2)); color: #fff; text-decoration: none; font-weight: 700; font-size: 15px; font-family: inherit;
  box-shadow: 0 10px 30px -10px rgba(109,124,255,.6); transition: box-shadow .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 14px 36px -10px rgba(34,211,238,.6); }
.btn:disabled { opacity: .5; cursor: default; transform: none; }
.btn.ghost { background: #fff; color: var(--text); border: 1px solid var(--line-strong); box-shadow: none; }
.hero .btn { margin-top: 36px; }

/* 注文住宅とのたとえ */
.compare { width: 100%; border-collapse: collapse; font-size: 14.5px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.compare th, .compare td { padding: 14px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.compare thead th { background: var(--surface); font-size: 13px; color: var(--muted); font-weight: 500; white-space: nowrap; }
.compare td:first-child { white-space: nowrap; font-weight: 700; width: 1%; }
.compare td:nth-child(2) { color: var(--muted); white-space: nowrap; width: 1%; }

/* 流れ */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: s; }
.steps li { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px; background: linear-gradient(180deg, #fff, var(--surface)); counter-increment: s; }
.steps li::before { content: "STEP " counter(s, decimal-leading-zero); display: block; font-family: Inter, sans-serif; font-weight: 600; font-size: 12px; letter-spacing: .14em; color: var(--c1); margin-bottom: 8px; }
.steps b { display: block; font-size: 16px; margin-bottom: 4px; }
.steps small { display: block; color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.steps .term { display: inline-block; margin-top: 10px; font-size: 12px; color: var(--c2); font-weight: 700; }

/* モジュール */
.mods { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.mod { border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: #fff; }
.mod b { display: block; font-size: 14.5px; margin-bottom: 4px; }
.mod small { display: block; color: var(--muted); font-size: 12.5px; line-height: 1.65; }
.mods-title { font-size: 15px; margin: 0 0 14px; }
.mods-title + .mods { margin-bottom: 36px; }
.mod.opt { background: var(--surface); }
.mod { position: relative; }
.mod .ex { display: block; margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--c2); line-height: 1.6; }
.mod .proof { display: inline-block; margin-top: 8px; font-size: 10.5px; font-weight: 700; color: var(--c3); border: 1px solid color-mix(in srgb, var(--c3) 35%, transparent); background: color-mix(in srgb, var(--c3) 8%, transparent); border-radius: 999px; padding: 0 8px; line-height: 1.8; }
.std { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0 0 36px; padding: 0; }
.std li { font-size: 13.5px; padding: 6px 14px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); }
.std li::before { content: "✓ "; color: var(--c1); font-weight: 700; }
#patterns > .wrap > .mods { margin-bottom: 40px; }
.cases + .cases { margin-top: 16px; }

/* 料金 */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; position: relative; overflow: hidden; background: #fff; }
.plan::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--grad); }
.plan.rec { border-color: var(--c1); box-shadow: 0 20px 60px -30px rgba(79,91,255,.45); }
.plan .badge { position: absolute; right: 16px; top: 16px; font-size: 11px; font-weight: 700; color: #fff; background: var(--c1); border-radius: 999px; padding: 2px 10px; }
.plan h3 { margin: 0 0 4px; font-size: 19px; }
.plan .for { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.plan .price { font-family: Inter, "Noto Sans JP", sans-serif; font-size: 30px; font-weight: 700; line-height: 1.2; }
.plan .price small { font-size: 13px; font-weight: 500; color: var(--muted); }
.plan .monthly { color: var(--muted); font-size: 13.5px; margin: 4px 0 18px; }
.plan ul { margin: 0; padding: 18px 0 0; border-top: 1px solid var(--line); list-style: none; font-size: 13.5px; }
.plan li { position: relative; padding-left: 18px; margin: 6px 0; }
.plan li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 6px; border-radius: 50%; background: var(--c1); }
.note { color: var(--faint); font-size: 12.5px; margin: 16px 0 0; }

/* 実績 */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.case { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: #fff; }
.case .tag { display: inline-block; font-size: 11.5px; color: var(--c2); border: 1px solid color-mix(in srgb, var(--c2) 35%, transparent); background: color-mix(in srgb, var(--c2) 10%, transparent); border-radius: 999px; padding: 1px 10px; margin-bottom: 10px; }
.case b { display: block; font-size: 15.5px; margin-bottom: 6px; }
.case p { margin: 0; color: var(--muted); font-size: 13.5px; }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 16px 4px; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 15px; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: -2px; font-size: 20px; color: var(--faint); font-family: Inter, sans-serif; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 10px 0 0; color: var(--muted); font-size: 14.5px; }

.contact { text-align: center; position: relative; overflow: hidden; }
.contact::before { content: ""; position: absolute; left: 50%; top: 50%; width: 900px; height: 420px; transform: translate(-50%, -30%); background: radial-gradient(ellipse, rgba(109,124,255,.16), rgba(34,211,238,.06) 45%, transparent 70%); pointer-events: none; }
.contact .wrap { position: relative; }
.contact h2 { padding-left: 0; } .contact h2::before { display: none; }
.contact p { color: var(--muted); margin: 12px 0 32px; }

footer { padding: 32px 0; color: var(--faint); font-size: 12.5px; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
footer a { color: var(--muted); text-decoration: none; }
footer .copy { text-align: right; line-height: 1.7; }

/* ---- ヒアリングフォーム ---- */
.form-page { padding: 56px 0 96px; }
.form-page h1 { font-size: clamp(24px, 3.6vw, 32px); margin: 8px 0 8px; }
.form-page .intro { color: var(--muted); margin: 0 0 32px; }
.stepper { display: flex; gap: 8px; list-style: none; margin: 0 0 28px; padding: 0; counter-reset: st; }
.stepper li { flex: 1; font-size: 12.5px; color: var(--faint); border-top: 3px solid var(--line); padding-top: 8px; counter-increment: st; }
.stepper li::before { content: counter(st) ". "; font-family: Inter, sans-serif; }
.stepper li.on { color: var(--text); font-weight: 700; border-color: var(--c1); }
.stepper li.done { color: var(--muted); border-color: color-mix(in srgb, var(--c1) 45%, #fff); }
.form-grid { display: grid; grid-template-columns: 1fr 300px; gap: 32px; align-items: start; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; background: #fff; }
.panel h2 { font-size: 20px; margin-bottom: 6px; }
.panel .desc { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
fieldset { border: 0; margin: 0 0 24px; padding: 0; }
legend, .field > label { display: block; font-weight: 700; font-size: 14.5px; margin-bottom: 8px; padding: 0; }
.req, .opt-l { font-size: 11px; font-weight: 700; border-radius: 4px; padding: 1px 6px; margin-left: 8px; vertical-align: 2px; }
.req { color: #fff; background: var(--error); }
.opt-l { color: var(--muted); background: var(--surface); border: 1px solid var(--line); }
.hint { display: block; color: var(--faint); font-size: 12.5px; font-weight: 400; margin-top: 2px; }
.field { margin-bottom: 22px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
input[type=text], input[type=email], input[type=tel], select, textarea {
  width: 100%; font: inherit; font-size: 15px; color: var(--text); background: #fff;
  border: 1px solid var(--line-strong); border-radius: 10px; padding: 10px 12px;
}
textarea { min-height: 112px; resize: vertical; line-height: 1.7; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--c1) 40%, transparent); outline-offset: 1px; border-color: var(--c1); }
.checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.checks label { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; font-size: 14px; line-height: 1.55; background: #fff; }
.checks label:has(input:checked) { border-color: var(--c1); background: color-mix(in srgb, var(--c1) 6%, #fff); }
.checks input { margin-top: 3px; accent-color: var(--c1); flex: none; }
.checks small { display: block; color: var(--faint); font-size: 12px; }
.checks .price-tag { color: var(--c2); font-weight: 700; font-size: 12px; }
.actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; }
.actions .btn { padding: 12px 28px; font-size: 14.5px; }
.err { color: var(--error); font-size: 13.5px; margin: 0 0 12px; }
.invalid { border-color: var(--error) !important; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.side { position: sticky; top: 88px; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: linear-gradient(180deg, #fff, var(--surface)); }
.side h3 { margin: 0 0 4px; font-size: 15px; }
.side .sub { color: var(--faint); font-size: 12px; margin: 0 0 16px; }
.side .amount { font-family: Inter, "Noto Sans JP", sans-serif; font-size: 26px; font-weight: 700; line-height: 1.3; }
.side .amount small { font-size: 12.5px; font-weight: 500; color: var(--muted); }
.side .m { color: var(--muted); font-size: 13.5px; margin: 4px 0 14px; }
.side ul { list-style: none; margin: 0; padding: 12px 0 0; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--muted); }
.side li { display: flex; justify-content: space-between; gap: 8px; margin: 4px 0; }
.side li span:last-child { white-space: nowrap; }

.confirm dl { margin: 0 0 20px; border-top: 1px solid var(--line); }
.confirm .r { display: grid; grid-template-columns: 180px 1fr; border-bottom: 1px solid var(--line); }
.confirm dt, .confirm dd { margin: 0; padding: 10px 4px; font-size: 14px; white-space: pre-wrap; }
.confirm dt { color: var(--faint); }
.confirm h3 { font-size: 15px; margin: 24px 0 8px; }
.agree { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; margin-top: 20px; }
.agree input { margin-top: 5px; accent-color: var(--c1); }
.done-box { text-align: center; padding: 48px 24px; }
.done-box .no { font-family: Inter, sans-serif; font-size: 22px; font-weight: 700; margin: 8px 0 20px; }

@media (max-width: 860px) {
  .mods { grid-template-columns: repeat(2, 1fr); }
  .plans, .cases, .steps { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .side { position: static; }
}
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .nav ul li:not(:last-child) { display: none; }
  .hero { padding: 72px 0 64px; }
  section { padding: 64px 0; }
  .sec-head { flex-direction: column; gap: 4px; margin-bottom: 28px; }
  .lead { margin-top: -8px; }
  /* 比較表はスマホでは行ごとに「注文住宅 → セミオーダー開発」を1行目、内容を2行目に並べる */
  .compare thead { display: none; }
  .compare tr { display: grid; grid-template-columns: auto 1fr; align-items: baseline; column-gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
  .compare tr:last-child { border-bottom: 0; }
  .compare td { padding: 0; border: 0; font-size: 13.5px; width: auto !important; }
  .compare td:nth-child(2)::before { content: "→ "; color: var(--faint); }
  .compare td:nth-child(3) { grid-column: 1 / -1; margin-top: 4px; color: var(--muted); }
  .mods { grid-template-columns: 1fr; }
  .panel { padding: 22px 18px; }
  .row2, .checks { grid-template-columns: 1fr; }
  .stepper li { font-size: 0; } .stepper li::before { font-size: 12px; }
  .stepper li.on { font-size: 12px; }
  .confirm .r { grid-template-columns: 1fr; }
  .confirm dt { padding-bottom: 0; }
  footer .wrap { flex-direction: column; gap: 6px; }
  footer .copy { text-align: center; }
}