@charset "UTF-8";

/* =========================================================
   山下大樹 個人事業主HP — 案B「松」本番テーマ
   静的な和の意匠。トップメッセージのみ控えめな初期表示アニメーションを使う。
   ========================================================= */

:root {
  --c-bg: #E9E0CF;
  --c-ink: #132B23;
  --c-deep: #132B23;
  --c-on-deep: #E9E0CF;
  --c-gold: #BA9B5F;
  --c-accent: #5E775E;
  --c-accent-text: #4F6951;
  --c-ink-mute: color-mix(in srgb, var(--c-ink) 72%, var(--c-bg));
  --c-line: color-mix(in srgb, var(--c-ink) 18%, transparent);
  --c-gold-line: color-mix(in srgb, var(--c-gold) 55%, transparent);

  --font-serif: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --w-page: 57.5rem;
  --w-main: 50rem;
  --w-prose: 34em;

  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4.5rem;
  --sp-9: 6.5rem;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 5rem;
  /* 装飾のはみ出しで、モバイルに横スクロール領域を作らない */
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  background-color: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.01em;
  text-underline-offset: 0.22em;
  -webkit-font-smoothing: antialiased;
}

main { display: block; }
img, svg { display: block; max-width: 100%; height: auto; }
ul, ol, dl, dd { margin-top: 0; }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--c-ink);
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.045em;
  text-wrap: balance;
}
h1 { font-size: clamp(1.75rem, 1.25rem + 2.1vw, 2.65rem); }
h2 { font-size: clamp(1.35rem, 1.15rem + 0.85vw, 1.7rem); }
h3 { font-size: clamp(1.1rem, 1.02rem + 0.38vw, 1.25rem); }
h4 { font-size: 1rem; }

p { max-width: var(--w-prose); margin: 0 0 var(--sp-4); }
p:last-child { margin-bottom: 0; }

a { color: var(--c-accent-text); }
a:hover { color: var(--c-deep); }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; }

small, .note {
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--c-ink-mute);
}
.lead { color: var(--c-ink-mute); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  color: var(--c-accent-text);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background-color: var(--c-gold);
}

.wrap {
  width: 100%;
  max-width: var(--w-page);
  margin-inline: auto;
  padding-inline: var(--sp-5);
}
.section {
  max-width: var(--w-main);
  margin-inline: auto;
  padding-block: var(--sp-8);
}
.section > * + * { margin-top: var(--sp-5); }
.section-head { margin-bottom: var(--sp-6); }
.section-head + * { margin-top: 0; }
.rule {
  width: 6rem;
  margin: 0 auto;
  border: 0;
  border-top: 1px solid var(--c-gold-line);
}
.mt-5 { margin-top: var(--sp-5); }
.mt-6 { margin-top: var(--sp-6); }
.mt-7 { margin-top: var(--sp-7); }

/* Header */
.site-header {
  position: relative;
  z-index: 10;
  color: var(--c-on-deep);
  background-color: var(--c-deep);
  border-bottom: 1px solid var(--c-gold-line);
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4) var(--sp-6);
  padding-block: 1.25rem;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: var(--sp-3);
  color: var(--c-on-deep);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  white-space: nowrap;
}
.brand:hover { color: var(--c-gold); }
.brand-en {
  color: var(--c-gold);
  font-family: var(--font-sans);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.2em;
}
.site-nav { margin-inline-start: auto; }
.site-nav ul {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--sp-3) 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav a {
  display: inline-block;
  color: var(--c-on-deep);
  font-size: 0.9375rem;
  text-decoration: none;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] { color: var(--c-gold); }
.site-nav .nav-contact {
  padding: 0.4rem 1rem;
  border: 1px solid var(--c-gold-line);
}
.site-nav .nav-contact:hover,
.site-nav .nav-contact:focus-visible,
.site-nav .nav-contact[aria-current="page"] { border-color: var(--c-gold); }

/* Top hero — the full-width pine field is painted behind existing markup. */
.hero {
  position: relative;
  z-index: 0;
  max-width: var(--w-main);
  margin-inline: auto;
  padding-block: 6rem 7rem;
  color: var(--c-on-deep);
}
.hero-message {
  animation: hero-fade-in 0.9s ease-out both;
}
@keyframes hero-fade-in {
  from { opacity: 0; transform: translateY(0.75rem); }
  to { opacity: 1; transform: translateY(0); }
}
.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background-color: var(--c-deep);
}
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -3rem;
  right: -3rem;
  width: 11rem;
  height: 11rem;
  border: 1.5px solid var(--c-gold-line);
  border-radius: 50%;
  opacity: 0.5;
  pointer-events: none;
}
.hero h1 {
  margin-bottom: 2rem;
  color: var(--c-on-deep);
  font-weight: 700;
  letter-spacing: 0.18em;
}
.hero h1::after {
  content: "";
  display: block;
  width: 4rem;
  height: 2px;
  margin-top: 1.5rem;
  background-color: var(--c-gold);
}
.hero-name-en {
  display: block;
  margin-top: var(--sp-4);
  color: var(--c-gold);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.35em;
}
.hero .roles {
  display: flex;
  flex-wrap: wrap;
  margin: 0 0 var(--sp-6);
  padding: 0;
  color: var(--c-on-deep);
  font-size: 0.9375rem;
  list-style: none;
}
.hero .roles li { white-space: nowrap; }
.hero .roles li + li::before {
  content: "/";
  margin: 0 0.6em;
  color: var(--c-on-deep);
}
.hero .hero-lead {
  max-width: 34em;
  margin-bottom: 2.5rem;
  color: var(--c-on-deep);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 2;
}

/* Home: keep long Japanese copy readable without narrow, uneven cards. */
.home .hero-title-line { display: inline-block; }
.home .hero-title-line:first-child { display: block; }
.home .section-head h2 { margin-bottom: var(--sp-4); }
.home .section-head .lead { max-width: none; }
.home .service-list { display: grid; gap: var(--sp-4); }
.home .service-list .card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  column-gap: var(--sp-6);
  align-items: start;
}
.home .service-list .card h3 { grid-row: 1 / 3; margin: 0; }
.home .service-list .card p { max-width: none; margin: 0; }
.home .service-list .service-need {
  margin-bottom: var(--sp-3);
  font-weight: 500;
}
.home .service-role {
  display: block;
  margin-top: var(--sp-2);
  color: var(--c-accent-text);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}
.home .service-list .card-more { grid-column: 2; justify-self: start; }
.home .principles { border-top: 1px solid var(--c-gold-line); }
.home .principle {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: var(--sp-5);
  padding-block: var(--sp-6);
  border-bottom: 1px solid var(--c-line);
}
.home .principle-number {
  color: var(--c-accent-text);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.55;
}
.home .principle h3 { margin-bottom: var(--sp-3); }
.home .principle p { max-width: none; }
.home .profile-content .card p { max-width: none; }
.home .profile-name {
  margin-block: var(--sp-5) var(--sp-2);
  font-family: var(--font-serif);
  font-size: 1.5rem;
}
.home .profile-example {
  margin-top: var(--sp-6);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--c-gold-line);
}
.home .profile-example h4 { margin-bottom: var(--sp-3); }

/* Sub-page heading */
.breadcrumb {
  max-width: var(--w-main);
  margin-inline: auto;
  padding-top: var(--sp-5);
  color: var(--c-ink-mute);
  font-size: 0.75rem;
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumb li + li::before {
  content: "／";
  margin-right: var(--sp-2);
  color: var(--c-gold);
}
.breadcrumb a { color: var(--c-accent-text); text-decoration: none; }
.page-head {
  max-width: var(--w-main);
  margin-inline: auto;
  padding-block: var(--sp-8) var(--sp-7);
  border-bottom: 1px solid var(--c-gold-line);
}
.page-head h1 { margin-bottom: var(--sp-4); }
.security-action-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--sp-7);
}
.security-action-mark {
  width: clamp(8rem, 18vw, 11rem);
  min-width: 8rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}
.card {
  display: block;
  padding: 1.75rem;
  color: var(--c-ink);
  background-color: var(--c-bg);
  border: 1px solid var(--c-line);
  border-top: 2px solid var(--c-gold);
  border-radius: 2px;
}
a.card { text-decoration: none; }
a.card:hover,
a.card:focus-visible { border-color: var(--c-accent); border-top-color: var(--c-gold); }
.card h3 { margin-bottom: var(--sp-3); }
.card p { color: var(--c-ink); font-size: 1.125rem; }
.card-more {
  display: inline-block;
  margin-top: var(--sp-4);
  color: var(--c-accent-text);
  border-bottom: 1px solid var(--c-gold);
  font-family: var(--font-serif);
  font-size: 0.875rem;
}

/* Lists and facts */
.list, .steps, .link-list {
  max-width: var(--w-prose);
  margin: 0;
  padding: 0;
  list-style: none;
}
.list > li {
  position: relative;
  margin-bottom: var(--sp-4);
  padding-left: 1.25rem;
}
.list > li::before {
  content: "";
  position: absolute;
  top: 0.85em;
  left: 0;
  width: 0.625rem;
  height: 0.125rem;
  background-color: var(--c-accent-text);
}
.list > li:last-child { margin-bottom: 0; }
.list strong { color: var(--c-ink); font-weight: 600; }
.facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  margin-bottom: 0;
}
.facts > div { padding-top: var(--sp-3); border-top: 1px solid var(--c-line); }
.facts dt {
  margin-bottom: 0.35rem;
  color: var(--c-ink-mute);
  font-family: var(--font-serif);
  font-size: 0.875rem;
}
.facts dd { margin: 0; color: var(--c-ink); font-size: 1.0625rem; }

.steps { counter-reset: step; }
.steps > li {
  position: relative;
  margin-left: 0.9rem;
  padding: 0 0 var(--sp-5) 2.75rem;
  border-left: 1px solid var(--c-gold-line);
  counter-increment: step;
}
.steps > li:last-child { padding-bottom: 0; border-left-color: transparent; }
.steps > li::before {
  content: counter(step);
  position: absolute;
  top: 0.15rem;
  left: -0.9rem;
  display: grid;
  width: 1.8rem;
  height: 1.8rem;
  place-items: center;
  color: var(--c-deep);
  background-color: var(--c-gold);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
}
.steps h3 { margin-bottom: var(--sp-2); }
.steps p { color: var(--c-ink-mute); font-size: 1.125rem; }

.aside-box {
  padding: var(--sp-5);
  background-color: color-mix(in srgb, var(--c-bg) 84%, var(--c-gold));
  border: 1px solid var(--c-gold-line);
  border-radius: 2px;
}
.aside-box h3 { margin-bottom: var(--sp-3); }
.aside-box p, .aside-box li { color: var(--c-ink-mute); font-size: 1.125rem; }

.link-list > li { padding-block: var(--sp-3); border-top: 1px solid var(--c-line); }
.link-list > li:last-child { border-bottom: 1px solid var(--c-line); }
.link-list a {
  color: var(--c-accent-text);
  font-size: 1rem;
  text-decoration-color: var(--c-gold);
}
.link-list span { display: block; color: var(--c-ink-mute); font-size: 0.8125rem; }

.trust-panel {
  padding: var(--sp-6);
  color: var(--c-on-deep);
  background-color: var(--c-deep);
  border: 1px solid var(--c-gold-line);
  border-top: 2px solid var(--c-gold);
  border-radius: 2px;
}
.trust-panel p { color: var(--c-on-deep); }
.trust-panel strong { color: var(--c-gold); font-weight: 600; }
.trust-panel .note { color: var(--c-on-deep); }
.declaration-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin: var(--sp-6) 0 0;
}
.declaration-facts > div {
  padding-top: var(--sp-3);
  border-top: 1px solid var(--c-gold-line);
}
.declaration-facts dt {
  margin-bottom: 0.35rem;
  color: var(--c-on-deep);
  font-size: 0.8125rem;
}
.declaration-facts dd {
  margin: 0;
  color: var(--c-gold);
  font-family: var(--font-serif);
  font-size: 1.125rem;
}
.policy-panel {
  padding: var(--sp-6);
  background-color: color-mix(in srgb, var(--c-bg) 84%, var(--c-gold));
  border: 1px solid var(--c-gold-line);
  border-top: 2px solid var(--c-gold);
  border-radius: 2px;
}
.policy-panel p { max-width: var(--w-prose); }

/* Buttons and CTA */
.btn-row { display: flex; flex-wrap: wrap; gap: var(--sp-4); }
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  color: var(--c-gold);
  background-color: transparent;
  border: 1px solid var(--c-gold);
  border-radius: 2px;
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  letter-spacing: 0.05em;
  text-align: center;
  text-decoration: none;
}
.btn:hover,
.btn:focus-visible { color: var(--c-deep); background-color: var(--c-gold); }

.cta {
  position: relative;
  z-index: 0;
  max-width: var(--w-main);
  margin-inline: auto;
  padding-block: 5rem;
  color: var(--c-on-deep);
  text-align: center;
}
.cta::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background-color: var(--c-deep);
}
.cta .card { padding: 0; color: var(--c-on-deep); background: transparent; border: 0; }
.cta h2 { margin-bottom: var(--sp-4); color: var(--c-on-deep); }
.cta p { margin-inline: auto; color: var(--c-on-deep); }
.cta .btn-row { justify-content: center; margin-top: var(--sp-6); }

/* Footer */
.site-footer {
  color: var(--c-on-deep);
  background-color: var(--c-deep);
  border-top: 1px solid var(--c-gold-line);
}
.site-footer .wrap {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  padding-block: var(--sp-7);
}
.site-footer h2 {
  margin-bottom: var(--sp-4);
  color: var(--c-on-deep);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
}
.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-5);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-footer a { color: var(--c-on-deep); font-size: 0.875rem; text-decoration: none; }
.site-footer a:hover, .site-footer a:focus-visible { color: var(--c-gold); }
.site-footer .copyright { margin: 0; color: var(--c-on-deep); font-size: 0.75rem; }

/* Auxiliary */
.skip-link {
  position: absolute;
  z-index: 100;
  top: 0;
  left: -999px;
  padding: var(--sp-3) var(--sp-5);
  color: var(--c-on-deep);
  background-color: var(--c-deep);
  font-size: 0.875rem;
}
.skip-link:focus { top: var(--sp-4); left: var(--sp-4); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.form-guide {
  display: grid;
  gap: var(--sp-6);
}
.form-guide p { margin: 0; }
.form-guide h3 { margin-bottom: var(--sp-2); }
.contact-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  max-width: none;
  margin: 0;
  padding: 0;
  border-block: 1px solid var(--c-gold-line);
  list-style: none;
}
.contact-flow li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--sp-4);
  padding: var(--sp-5);
}
.contact-flow li + li { border-left: 1px solid var(--c-gold-line); }
.contact-step-number {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  color: var(--c-gold);
  border: 1px solid var(--c-gold-line);
  border-radius: 50%;
  font-family: var(--font-serif);
  line-height: 1;
}
.contact-flow h4 { margin-bottom: var(--sp-2); }
.contact-flow p { color: var(--c-ink-mute); font-size: 0.9375rem; }

@media (min-width: 34rem) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .declaration-facts { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 43.75rem) {
  .keep-line-at-tablet { white-space: nowrap; }
  .copy-line-at-tablet { display: block; }
}
@media (min-width: 46rem) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
  .card-grid-2 { grid-template-columns: repeat(2, 1fr); }
}
@media print {
  .site-header, .cta, .skip-link { display: none; }
  body { color: #000; background: #fff; }
  .card { border: 1px solid #999; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-message { animation: none; }
}

/* Compact layout: preserve 18px body and 13px navigation. */
@media (max-width: 40rem) {
  body { font-size: 1.125rem; }
  .wrap { padding-inline: var(--sp-4); }
  .site-header .wrap {
    align-items: center;
    gap: var(--sp-2) var(--sp-4);
    padding-block: var(--sp-3);
  }
  .brand { font-size: 1rem; }
  .brand-en { display: none; }
  .site-nav {
    flex-basis: 100%;
    width: 100%;
    margin-inline-start: 0;
  }
  .site-nav ul {
    justify-content: space-between;
    gap: var(--sp-2);
  }
  .site-nav a { font-size: 0.8125rem; letter-spacing: 0; }
  .site-nav .nav-contact { padding: var(--sp-1) var(--sp-2); }
  .hero { padding-block: var(--sp-8) var(--sp-9); }
  /* 画面端で中途半端に切れる円形装飾はモバイルでは表示しない */
  .hero::after { display: none; }
  .hero .roles { gap: var(--sp-1) 0; }
  .hero .hero-lead { font-size: 1.0625rem; }
  .home .hero h1 { letter-spacing: 0.08em; text-wrap: initial; }
  .home .hero-title-line { max-width: 100%; }
  .home .service-list .card { grid-template-columns: minmax(0, 1fr); gap: var(--sp-3); }
  .home .service-list .card h3 { grid-row: auto; }
  .home .service-list .card-more { grid-column: 1; margin-top: var(--sp-2); }
  .home .principle { grid-template-columns: 2rem minmax(0, 1fr); gap: var(--sp-3); }
  .section { padding-block: var(--sp-7); }
  .page-head { padding-block: var(--sp-7) var(--sp-6); }
  .security-action-head { grid-template-columns: 1fr; gap: var(--sp-5); }
  .security-action-mark { width: 8rem; }
  .card { padding: var(--sp-5); }
  .policy-panel { padding: var(--sp-5); }
  .btn { width: 100%; }
  .contact-flow { grid-template-columns: 1fr; }
  .contact-flow li { padding-inline: 0; }
  .contact-flow li + li { border-top: 1px solid var(--c-gold-line); border-left: 0; }
}