/* ============================================================
   合同会社 Bi-cat — Static site styles
   ============================================================ */

:root {
  /* Brand */
  --bc-yellow: rgb(224, 231, 34);
  --bc-blue:   rgb(141, 185, 229);

  /* Soft tints */
  --bc-yellow-50: #fbfce4;
  --bc-blue-50:   #eef5fc;

  /* Neutrals */
  --bc-bg:     #fbfbfa;
  --bc-bg-alt: #f4f4f1;
  --bc-line:   #e6e6e1;
  --bc-line-2: #d3d3cc;
  --bc-ink:    #1d1d1b;
  --bc-ink-2:  #4a4a47;
  --bc-ink-3:  #84847f;
  --bc-white:  #ffffff;

  /* Type */
  --bc-font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  --bc-font-en: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;

  /* Type scale */
  --bc-fs-display: clamp(40px, 6.4vw, 92px);
  --bc-fs-h1: clamp(32px, 4.2vw, 56px);
  --bc-fs-h2: clamp(24px, 2.6vw, 36px);
  --bc-fs-h3: 20px;
  --bc-fs-body: 16px;

  /* Radius */
  --bc-r-sm: 8px;
  --bc-r-md: 10px;
  --bc-r-lg: 14px;
  --bc-r-pill: 999px;

  /* Layout */
  --bc-max: 1200px;
  --bc-gutter: clamp(20px, 4vw, 56px);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--bc-font-jp);
  font-size: var(--bc-fs-body);
  line-height: 1.7;
  color: var(--bc-ink);
  background: var(--bc-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt";
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

.bc-eyebrow {
  font-family: var(--bc-font-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bc-ink-3);
  font-weight: 500;
}
.bc-h1 { font-size: var(--bc-fs-h1); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; margin: 0; }
.bc-h2 { font-size: var(--bc-fs-h2); font-weight: 700; line-height: 1.3; letter-spacing: -0.005em; margin: 0; }
.bc-h3 { font-size: var(--bc-fs-h3); font-weight: 700; line-height: 1.5; margin: 0; }

.bc-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px;
  border-radius: var(--bc-r-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.bc-btn:hover { transform: translateY(-1px); }
.bc-btn--primary { background: var(--bc-ink); color: #fff; }
.bc-btn--primary:hover { background: #000; }
.bc-btn--ghost { background: transparent; border-color: var(--bc-line-2); color: var(--bc-ink); }
.bc-btn--ghost:hover { background: var(--bc-bg-alt); }
.bc-btn--lg { padding: 18px 28px; font-size: 16px; }
.bc-arrow { width: 14px; height: 14px; }

.va-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; color: var(--bc-ink); font-weight: 600;
  border-bottom: 1px solid var(--bc-line-2);
  padding-bottom: 2px;
}
.va-link:hover { border-color: var(--bc-ink); }

/* ============================================================
   Header / Navigation
   ============================================================ */
.bc-nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 20px var(--bc-gutter);
  position: sticky; top: 0; z-index: 30;
  background: rgba(251,251,250,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--bc-line);
}
.bc-nav__logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--bc-font-en); font-weight: 700; font-size: 18px; letter-spacing: -0.01em;
}
.bc-nav__links {
  display: flex; gap: 28px; font-size: 14px; color: var(--bc-ink-2);
}
.bc-nav__links a:hover { color: var(--bc-ink); }
.bc-nav__cta { padding: 10px 16px; font-size: 13px; }

/* mobile menu (kept simple — show all on desktop, no menu toggle) */
@media (max-width: 720px) {
  .bc-nav__links { display: none; }
  .bc-nav__cta { padding: 8px 12px; }
}

/* ============================================================
   Hero (variation A)
   ============================================================ */
.va-hero {
  position: relative;
  max-width: var(--bc-max);
  margin: 0 auto;
  padding: 80px var(--bc-gutter) 120px;
  overflow: hidden;
}
.va-hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--bc-font-en); font-size: 11px; letter-spacing: .2em;
  color: var(--bc-ink-3); margin-bottom: 32px;
  text-transform: uppercase;
}
.va-hero__title {
  font-size: var(--bc-fs-display);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em;
  margin: 0 0 28px; max-width: 18ch;
  position: relative; z-index: 2;
}
.va-hero__lead {
  font-size: 16px; line-height: 2; color: var(--bc-ink-2);
  max-width: 48ch; position: relative; z-index: 2;
}
.va-hero__actions {
  margin-top: 40px;
  display: flex; gap: 12px; flex-wrap: wrap;
  position: relative; z-index: 2;
}
.va-hero__art {
  position: absolute;
  top: 80px; right: var(--bc-gutter);
  width: 360px; height: 360px;
  pointer-events: none;
}
.va-blob {
  position: absolute;
  animation: vaFloat 9s ease-in-out infinite;
}
.va-blob--y {
  width: 270px; height: 210px;
  top: 0; right: 30px;
  color: var(--bc-yellow);
  opacity: .9;
  transform: rotate(-8deg);
}
.va-blob--b {
  width: 200px; height: 150px;
  bottom: 10px; right: -10px;
  color: var(--bc-blue);
  opacity: .6;
  transform: rotate(14deg);
  animation-delay: -2s;
}
.va-hero__cat {
  position: absolute; bottom: 30px; left: -10px;
  animation: vaCatBob 4.5s ease-in-out infinite;
}
@keyframes vaFloat {
  0%, 100% { translate: 0 0; }
  50% { translate: -10px 8px; }
}
@keyframes vaCatBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@media (max-width: 880px) {
  .va-hero { padding-bottom: 80px; }
  .va-hero__art { width: 240px; height: 240px; opacity: .55; top: 40px; }
}

/* ============================================================
   Services (cards)
   ============================================================ */
.va-services {
  max-width: var(--bc-max);
  margin: 0 auto;
  padding: 96px var(--bc-gutter);
  border-top: 1px solid var(--bc-line);
}
.va-services__head { margin-bottom: 48px; }
.va-services__head .bc-eyebrow { display: block; margin-bottom: 12px; }
.va-services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.va-card {
  position: relative;
  padding: 32px;
  background: var(--bc-white);
  border: 1px solid var(--bc-line);
  border-radius: var(--bc-r-md);
  transition: transform .25s ease, border-color .25s ease;
}
.va-card:hover { transform: translateY(-4px); border-color: var(--accent, var(--bc-ink)); }
.va-card__num {
  font-family: var(--bc-font-en); font-size: 12px;
  letter-spacing: .15em; color: var(--bc-ink-3); margin-bottom: 36px;
}
.va-card h3 { margin-bottom: 12px; }
.va-card p { color: var(--bc-ink-2); font-size: 14px; line-height: 1.8; margin: 0; }
.va-card__paw { position: absolute; top: 28px; right: 28px; opacity: .9; }

@media (max-width: 880px) {
  .va-services__grid { grid-template-columns: 1fr; }
}

/* ============================================================
   About strip
   ============================================================ */
.va-about { background: var(--bc-bg-alt); padding: 96px 0; }
.va-about__grid {
  max-width: var(--bc-max); margin: 0 auto; padding: 0 var(--bc-gutter);
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px; align-items: start;
}
.va-about .bc-eyebrow { display: block; margin-bottom: 12px; }
.va-about h2 { margin-bottom: 20px; }
.va-about p { color: var(--bc-ink-2); line-height: 2; margin: 0 0 24px; }
.va-meta { margin: 0; }
.va-meta > div {
  display: grid; grid-template-columns: 100px 1fr; gap: 16px;
  padding: 14px 0; border-bottom: 1px solid var(--bc-line);
}
.va-meta dt { font-size: 12px; color: var(--bc-ink-3); font-weight: 500; margin: 0; }
.va-meta dd { margin: 0; font-size: 14px; }

@media (max-width: 880px) {
  .va-about__grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ============================================================
   CTA
   ============================================================ */
.va-cta {
  text-align: center;
  padding: 120px var(--bc-gutter);
  max-width: 720px; margin: 0 auto;
}
.va-cta h2 { margin: 24px 0 12px; }
.va-cta p { color: var(--bc-ink-2); margin: 0 0 32px; }
.va-cta .va-whiskers { margin: 0 auto 8px; }

/* ============================================================
   Footer
   ============================================================ */
.bc-footer {
  margin-top: 80px;
  background: var(--bc-bg-alt);
  border-top: 1px solid var(--bc-line);
}
.bc-footer__inner {
  max-width: var(--bc-max);
  margin: 0 auto;
  padding: 64px var(--bc-gutter) 32px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
}
.bc-footer__brand { display: flex; flex-direction: column; gap: 12px; }
.bc-footer__logo { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.bc-footer__addr { color: var(--bc-ink-3); font-size: 13px; line-height: 1.8; margin: 0; }
.bc-footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.bc-footer__h {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--bc-ink-3);
  margin: 0 0 12px; font-family: var(--bc-font-en); font-weight: 500;
}
.bc-footer__cols ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.bc-footer__cols a { display: inline-block; padding: 4px 0; font-size: 14px; color: var(--bc-ink-2); }
.bc-footer__cols a:hover { color: var(--bc-ink); }
.bc-footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  border-top: 1px solid var(--bc-line);
  padding: 24px var(--bc-gutter) 36px;
  font-size: 12px; color: var(--bc-ink-3);
  max-width: var(--bc-max); margin: 0 auto;
}

@media (max-width: 880px) {
  .bc-footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .bc-footer__cols { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   Sub-page common (used by services / about / contact / privacy)
   ============================================================ */
.sp-head {
  max-width: var(--bc-max);
  margin: 0 auto;
  padding: 80px var(--bc-gutter) 56px;
}
.sp-head__deco { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.sp-head .bc-eyebrow { display: block; margin-bottom: 16px; }
.sp-head__title {
  font-size: var(--bc-fs-h1);
  font-weight: 700; letter-spacing: -0.015em; line-height: 1.2;
  margin: 0 0 20px;
}
.sp-head__lead { color: var(--bc-ink-2); line-height: 2; max-width: 64ch; margin: 0; }

/* services */
.sp-srv { padding: 64px 0; }
.sp-srv--alt { background: var(--bc-bg-alt); }
.sp-srv__inner {
  max-width: var(--bc-max); margin: 0 auto; padding: 0 var(--bc-gutter);
  display: grid; grid-template-columns: 100px 1fr; gap: 32px;
}
.sp-srv__num span {
  display: inline-block; font-family: var(--bc-font-en);
  font-size: 14px; letter-spacing: .2em; color: var(--bc-ink-3);
  border-top: 1px solid var(--bc-line-2); padding-top: 14px;
}
.sp-srv__body h2 { margin-bottom: 16px; }
.sp-srv__lead { color: var(--bc-ink-2); line-height: 2; margin: 0 0 32px; }
.sp-srv__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.sp-srv__card {
  padding: 24px;
  background: var(--bc-white);
  border: 1px solid var(--bc-line);
  border-radius: var(--bc-r-md);
}
.sp-srv__card:hover { border-color: var(--bc-ink); }
.sp-srv__card h3 { margin: 0 0 8px; }
.sp-srv__card p { margin: 0 0 16px; color: var(--bc-ink-2); font-size: 13px; line-height: 1.8; }
.sp-srv__card ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.sp-srv__card li {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--bc-ink-2);
  padding: 6px 0;
  border-top: 1px dashed var(--bc-line);
}
.sp-srv__card li:first-child { border-top: 0; }

@media (max-width: 880px) {
  .sp-srv__inner { grid-template-columns: 1fr; gap: 16px; }
  .sp-srv__grid { grid-template-columns: 1fr; }
}

/* process */
.sp-process { padding: 96px var(--bc-gutter); }
.sp-process__inner { max-width: 920px; margin: 0 auto; }
.sp-process__inner .bc-eyebrow { display: block; margin-bottom: 12px; }
.sp-process__inner h2 { margin: 0 0 48px; }
.sp-process__list { list-style: none; padding: 0; margin: 0; }
.sp-process__list li {
  display: grid; grid-template-columns: 80px 1fr; gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--bc-line);
}
.sp-process__list li:last-child { border-bottom: 1px solid var(--bc-line); }
.sp-process__num {
  font-family: var(--bc-font-en);
  font-size: 13px; letter-spacing: .15em; color: var(--bc-ink-3);
  padding-top: 4px;
}
.sp-process__t { font-weight: 700; font-size: 18px; margin-bottom: 4px; }
.sp-process__list p { margin: 0; color: var(--bc-ink-2); font-size: 14px; line-height: 1.8; }

/* about */
.sp-about { max-width: 880px; margin: 0 auto; padding: 32px var(--bc-gutter) 96px; }
.sp-about__intro { padding: 32px 0 48px; border-top: 1px solid var(--bc-line); }
.sp-about__intro p { font-size: 16px; line-height: 2.1; color: var(--bc-ink-2); margin: 0 0 18px; }
.sp-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.sp-table th, .sp-table td {
  padding: 18px 16px; text-align: left; vertical-align: top;
  border-bottom: 1px solid var(--bc-line); line-height: 1.8;
}
.sp-table th { width: 160px; font-weight: 600; color: var(--bc-ink-2); background: var(--bc-bg); }
.sp-table td a { border-bottom: 1px solid var(--bc-line-2); }
@media (max-width: 880px) { .sp-table th { width: 120px; font-size: 13px; } }

/* contact */
.sp-contact {
  max-width: var(--bc-max); margin: 0 auto;
  padding: 24px var(--bc-gutter) 96px;
  display: grid; grid-template-columns: 320px 1fr; gap: 56px;
}
.sp-contact__side { display: flex; flex-direction: column; gap: 16px; }
.sp-contact__card {
  padding: 28px;
  border-radius: var(--bc-r-lg);
  background: var(--bc-white);
  border: 1px solid var(--bc-line);
}
.sp-contact__card .bc-eyebrow { display: block; margin-bottom: 12px; }
.sp-contact__card--soft { background: var(--bc-bg-alt); }
.sp-contact__mail {
  display: block;
  font-size: 18px; font-weight: 700; letter-spacing: -0.01em;
  border-bottom: 1px solid var(--bc-line-2);
  padding-bottom: 8px; margin-bottom: 12px;
  font-family: var(--bc-font-en);
}
.sp-contact__card p { margin: 0; font-size: 13px; color: var(--bc-ink-2); line-height: 1.8; }
.sp-contact__card ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.sp-contact__card li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--bc-ink-2); }
.sp-form {
  display: flex; flex-direction: column; gap: 24px;
  padding: 32px;
  background: var(--bc-white);
  border: 1px solid var(--bc-line);
  border-radius: var(--bc-r-lg);
}
.sp-form__row { display: flex; flex-direction: column; gap: 8px; }
.sp-form__row label {
  font-size: 13px; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
}
.sp-form__row label .req {
  font-size: 10px; font-weight: 600;
  background: var(--bc-yellow); color: var(--bc-ink);
  padding: 2px 8px; border-radius: var(--bc-r-pill);
}
.sp-form input[type="text"], .sp-form input[type="email"], .sp-form textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--bc-line-2);
  border-radius: var(--bc-r-sm);
  background: var(--bc-bg);
  color: var(--bc-ink);
  resize: vertical;
}
.sp-form input:focus, .sp-form textarea:focus {
  outline: none; border-color: var(--bc-ink); background: var(--bc-white);
}
.sp-form__radios { display: flex; flex-wrap: wrap; gap: 8px; }
.sp-radio {
  position: relative;
  padding: 8px 14px;
  border: 1px solid var(--bc-line-2);
  border-radius: var(--bc-r-pill);
  font-size: 13px; color: var(--bc-ink-2);
  cursor: pointer;
}
.sp-radio input { position: absolute; opacity: 0; pointer-events: none; }
.sp-radio:has(input:checked) { background: var(--bc-ink); color: #fff; border-color: var(--bc-ink); }
.sp-form__agree { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--bc-ink-2); }
.sp-form__agree a { border-bottom: 1px solid var(--bc-line-2); }
@media (max-width: 880px) { .sp-contact { grid-template-columns: 1fr; gap: 24px; } }

/* privacy doc */
.sp-doc { max-width: 760px; margin: 0 auto; padding: 24px var(--bc-gutter) 96px; }
.sp-doc__notice {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 16px 20px;
  background: var(--bc-blue-50);
  border: 1px solid var(--bc-blue);
  border-radius: var(--bc-r-md);
  font-size: 13px; color: var(--bc-ink-2); line-height: 1.8;
  margin-bottom: 32px;
}
.sp-doc__list { list-style: none; padding: 0; margin: 0; }
.sp-doc__list > li { padding: 24px 0; border-top: 1px solid var(--bc-line); }
.sp-doc__list > li:last-child { border-bottom: 1px solid var(--bc-line); }
.sp-doc__h { font-size: 16px; font-weight: 700; margin: 0 0 12px; }
.sp-doc p { margin: 0 0 12px; color: var(--bc-ink-2); line-height: 2; font-size: 14px; }
.sp-doc ul { padding-left: 1.2em; margin: 8px 0 0; }
.sp-doc li { color: var(--bc-ink-2); line-height: 2; font-size: 14px; }
.sp-doc a { border-bottom: 1px solid var(--bc-line-2); }
.sp-doc__date { margin-top: 32px; font-size: 12px; color: var(--bc-ink-3); text-align: right; }