/* =====================================================================
   style.css ── 土と陽（つちとひ）｜Land & Sun コンサルティング（提案サンプル）
   深緑 × 真鍮金 × 生成り／明朝エディトリアル
   数値はベタ書きせず tokens.css の var(--xx) を使う（PART 2-2）
   ===================================================================== */

/* --- 基本 ----------------------------------------------------------- */
html { scroll-behavior: smooth; }   /* reduced-motion 時は末尾で auto に上書き */

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--ff-body);
  font-size: var(--fz-body);
  line-height: var(--lh-body);
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--ff-head);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .02em;
}

p { max-width: 40em; }

a { color: inherit; text-decoration: none; transition: color .25s ease, opacity .25s ease; }

strong { font-weight: 700; color: var(--c-main); }
em { font-style: normal; color: var(--c-text); border-bottom: 1px solid var(--c-accent); }

::selection { background: var(--c-accent); color: #fff; }

/* --- レイアウト ----------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-3);
}

.section {
  padding-block: clamp(var(--sp-12), 13vw, var(--sp-16));
}
.section--alt { background: var(--c-paper-2); }
/* 固定ヘッダー分のオフセット（アンカー追従時に見出しが隠れない）*/
main section[id] { scroll-margin-top: 84px; }

/* セクション見出し（共通） */
.eyebrow {
  font-family: var(--ff-en);
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--c-main);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}
.eyebrow::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--c-accent);
  display: inline-block;
}
.eyebrow--inv { color: var(--c-accent-2); }
.eyebrow--inv::before { background: var(--c-accent-2); }

.section__head { margin-bottom: clamp(var(--sp-6), 6vw, var(--sp-12)); }
.section__head--center { text-align: center; }
.section__head--center .eyebrow::before { display: none; }
.section__head--center .eyebrow { gap: 0; }

.section__title {
  font-size: var(--fz-h2);
  color: var(--c-main);
}
.section__title--inv { color: var(--c-text-inv); }

/* --- ボタン --------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: calc(var(--sp-2) + 2px) var(--sp-6);
  border-radius: var(--radius);
  font-family: var(--ff-body);
  font-size: .95rem;
  font-weight: 500;
  letter-spacing: .04em;
  border: 1px solid transparent;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .25s ease;
}
.button::after {
  content: "→";
  font-family: var(--ff-en);
  transition: transform .25s ease;
}
.button:hover::after { transform: translateX(4px); }

.button--gold {
  background: var(--c-accent);
  color: var(--c-main);
}
.button--gold:hover { background: #ad8b3f; }

.button--ghost {
  background: transparent;
  border-color: currentColor;
  color: var(--c-main);
}
.button--ghost::after { content: none; }
.button--ghost:hover { background: var(--c-main); color: #fff; border-color: var(--c-main); }

/* --- 提案サンプル表示 ----------------------------------------------- */
.sample-flag {
  position: fixed;
  bottom: 0; left: 0;
  z-index: 100;
  background: var(--c-main);
  color: var(--c-accent-2);
  font-size: var(--fz-small);
  letter-spacing: .06em;
  padding: 5px var(--sp-2);
  border-top-right-radius: var(--radius);
  box-shadow: 0 -2px 12px rgba(10,10,12,.28);
}

/* --- スキップリンク・フォーカス（PART 2-12）------------------------- */
.skip-link {
  position: absolute;
  left: var(--sp-2);
  top: -4rem;
  z-index: 200;
  background: var(--c-main);
  color: #fff;
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius);
  transition: top .2s ease;
}
.skip-link:focus { top: var(--sp-2); }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

/* --- ヘッダー / ナビ ------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  padding-block: var(--sp-3);
  color: #fff;                         /* ヒーロー上は白文字 */
  transition: background .3s ease, color .3s ease, padding .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled {
  background: var(--c-bg);
  color: var(--c-text);
  padding-block: var(--sp-2);
  box-shadow: 0 1px 0 var(--c-line);
}
.site-header .nav {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.logo { display: inline-flex; align-items: center; gap: var(--sp-2); }
.logo__mark { display: inline-flex; color: var(--c-accent); }
.logo__text { display: inline-flex; flex-direction: column; line-height: 1.1; }
.logo__ja { font-family: var(--ff-head); font-weight: 700; font-size: 1.25rem; letter-spacing: .12em; }
.logo__en { font-family: var(--ff-en); font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; opacity: .8; }

/* ハンバーガー（モバイルで表示・デスクトップで非表示）*/
.nav__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  margin-left: auto;
  padding: 9px;
  background: none; border: 0; cursor: pointer;
  color: inherit;
}
.nav__toggle-bar {
  display: block; width: 22px; height: 1.5px;
  background: currentColor;
  transition: transform .3s ease, opacity .3s ease;
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* メニュー（モバイル：ドロップダウン）*/
.nav__menu {
  position: absolute;
  top: 100%; left: 0; right: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  background: var(--c-bg);
  color: var(--c-text);
  padding: var(--sp-1) var(--sp-3) var(--sp-4);
  border-top: 1px solid var(--c-line);
  box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
}
.nav__menu.is-open { opacity: 1; visibility: visible; transform: none; }

.nav__list { display: flex; flex-direction: column; gap: 0; list-style: none; }
.nav__list li { border-bottom: 1px solid var(--c-line); }
.nav__list a {
  display: block;
  padding: var(--sp-3) var(--sp-1);
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--c-text);
}
.nav__list a:hover { color: var(--c-accent); }

.nav__cta {
  margin-top: var(--sp-3);
  justify-content: center;
  font-size: .9rem;
  color: var(--c-main);
  border-color: var(--c-main);
}

/* --- ヒーロー：スクロール連動ピン留め --------------------------------- */
.hero-scroll { position: relative; height: 500vh; background: var(--c-main-deep); }
.hero-sticky {
  position: sticky; top: 0;
  height: 100svh;
  overflow: hidden;
  isolation: isolate;
  color: #fff;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; opacity: 0; transition: opacity .2s linear; }
.hero-bg.is-active { opacity: 1; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); }
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(95deg, rgba(10,10,12,.85) 0%, rgba(10,10,12,.56) 44%, rgba(10,10,12,.24) 80%, rgba(10,10,12,.08) 100%),
    linear-gradient(to bottom, rgba(10,10,12,.55) 0%, rgba(10,10,12,0) 22%, rgba(10,10,12,0) 55%, rgba(10,10,12,.64) 100%);
}

.hero-stage { position: absolute; inset: 0; z-index: 2; }
.hero-scene {
  position: absolute;
  left: 50%;
  bottom: clamp(var(--sp-12), 18vh, 210px);
  width: min(calc(100% - 2 * var(--sp-3)), var(--container));
  transform: translateX(-50%);
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.4s ease, visibility 1.4s ease;
  pointer-events: none;
}
.hero-scene.is-active { opacity: 1; visibility: visible; pointer-events: auto; }

/* タイトル：行マスクで下からゆっくりせり上がる */
.hero__title .line { display: block; overflow: hidden; padding-block: .08em; margin-block: -.08em; }
.hero__title .line__in {
  display: block;
  transform: translateY(118%);
  transition: transform 1.9s cubic-bezier(.16, 1, .3, 1);
}
.hero-scene.is-active .hero__title .line:nth-child(1) .line__in { transition-delay: .15s; }
.hero-scene.is-active .hero__title .line:nth-child(2) .line__in { transition-delay: .35s; }
.hero-scene.is-active .hero__title .line__in { transform: translateY(0); }

/* eyebrow・lead・ボタン：下からふわっと（スタガー）*/
.hero__eyebrow,
.hero__lead,
.hero-scene .button {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 1.6s ease, transform 1.6s cubic-bezier(.16, 1, .3, 1);
}
.hero-scene.is-active .hero__eyebrow { opacity: 1; transform: none; transition-delay: .08s; }
.hero-scene.is-active .hero__lead   { opacity: 1; transform: none; transition-delay: .6s; }
.hero-scene.is-active .button       { opacity: 1; transform: none; transition-delay: .85s; }

.hero__eyebrow {
  font-family: var(--ff-body);
  letter-spacing: .2em;
  font-size: .85rem;
  color: var(--c-accent-2);
  margin-bottom: var(--sp-3);
}
.hero__title {
  font-size: var(--fz-h1);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: .04em;
  color: #fff;
  text-shadow: 0 2px 30px rgba(0,0,0,.3);
}
.hero__lead {
  margin-top: var(--sp-4);
  max-width: 32em;
  font-size: var(--fz-lead);
  line-height: 1.95;
  color: rgba(255,255,255,.92);
}
.hero-scene .button { margin-top: var(--sp-6); }

/* 進行ドット */
.hero-dots {
  position: absolute; z-index: 3;
  right: clamp(var(--sp-3), 4vw, var(--sp-8));
  bottom: clamp(var(--sp-8), 12vh, 140px);
  list-style: none; display: flex; flex-direction: column; gap: var(--sp-2);
}
.hero-dots li {
  width: 9px; height: 9px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.55);
  transition: background .3s ease, border-color .3s ease, transform .3s ease;
}
.hero-dots li.is-active { background: var(--c-accent-2); border-color: var(--c-accent-2); transform: scale(1.15); }

/* スクロール誘導 */
.hero-cue {
  position: absolute; z-index: 3;
  left: 50%; transform: translateX(-50%);
  bottom: var(--sp-4);
  display: flex; flex-direction: column; align-items: center; gap: var(--sp-1);
  font-family: var(--ff-en);
  font-size: .68rem; letter-spacing: .32em; text-transform: uppercase;
  color: rgba(255,255,255,.7);
}
.hero-cue::after {
  content: ""; width: 1px; height: 40px;
  background: linear-gradient(rgba(255,255,255,.75), rgba(255,255,255,0));
  animation: heroCue 2.2s ease-in-out infinite;
}
@keyframes heroCue {
  0%, 100% { transform: scaleY(.35); transform-origin: top; opacity: .35; }
  50%      { transform: scaleY(1);   opacity: .9; }
}

/* --- 課題提起 ------------------------------------------------------- */
.issue__title {
  font-size: clamp(1.8rem, 4.4vw, 3rem);
  color: var(--c-main);
  margin-bottom: var(--sp-6);
}
.issue__body { max-width: var(--container-narrow); }
.issue__body p + p { margin-top: var(--sp-4); }
.issue__body p { max-width: 38em; }

/* --- サービス3本柱 -------------------------------------------------- */
.services { list-style: none; display: grid; gap: 0; }
.service {
  position: relative;
  padding: var(--sp-8) 0;
  border-top: 1px solid var(--c-line);
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no icon"
    "name name"
    "desc desc";
  column-gap: var(--sp-4);
  row-gap: var(--sp-2);
  align-items: start;
}
.service:last-child { border-bottom: 1px solid var(--c-line); }
.service__no {
  grid-area: no;
  font-family: var(--ff-en);
  font-size: 1.6rem;
  color: var(--c-accent-deep);
  line-height: 1;
}
.service__icon { grid-area: icon; color: var(--c-main); justify-self: end; }
.service__name {
  grid-area: name;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  color: var(--c-main);
  margin-top: var(--sp-2);
}
.service__desc { grid-area: desc; max-width: 36em; }

/* --- 数字（反転セクション）----------------------------------------- */
.section--stats {
  background: var(--c-main-deep);
  color: var(--c-text-inv);
}
.stats__note {
  font-size: var(--fz-small);
  color: rgba(236,230,216,.55);
  margin-top: var(--sp-2);
}
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-8) var(--sp-4);
}
.stat { text-align: center; }
.stat__num {
  font-family: var(--ff-en);
  font-weight: 500;
  line-height: 1;
  color: #fff;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}
.stat__num .num { font-size: clamp(3.2rem, 9vw, 5.5rem); color: var(--c-accent-2); }
.stat__unit { font-family: var(--ff-head); font-size: 1.1rem; color: var(--c-text-inv); }
.stat__label {
  margin-top: var(--sp-2);
  font-size: .9rem;
  letter-spacing: .04em;
  color: rgba(236,230,216,.82);
}

/* --- 選ばれる理由 --------------------------------------------------- */
.reasons {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
}
.reason { border-top: 2px solid var(--c-main); padding-top: var(--sp-3); }
.reason__no {
  font-family: var(--ff-en);
  font-size: 1.6rem;
  color: var(--c-accent-deep);
  letter-spacing: .12em;
  margin-bottom: var(--sp-2);
}
.reason__name {
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  color: var(--c-main);
  margin-bottom: var(--sp-2);
}
.reason__desc { color: var(--c-text); }

/* --- ご相談の流れ --------------------------------------------------- */
.section--flow { background: var(--c-paper-2); }
.flow { list-style: none; display: grid; grid-template-columns: 1fr; gap: var(--sp-6); counter-reset: none; }
.flow__step {
  position: relative;
  padding-left: var(--sp-8);
  padding-bottom: var(--sp-6);
  border-left: 1px solid var(--c-line);
}
.flow__step:last-child { border-left-color: transparent; padding-bottom: 0; }
.flow__no {
  position: absolute;
  left: 0; top: -4px;
  transform: translateX(-50%);
  font-family: var(--ff-en);
  font-size: 1rem;
  color: #fff;
  background: var(--c-main);
  width: 34px; height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.flow__name { font-size: 1.2rem; color: var(--c-main); margin-bottom: 4px; }
.flow__desc { font-size: .95rem; }

/* --- お問い合わせ --------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-1);
  align-items: stretch;
}
.contact__lead {
  background: var(--c-main-deep);
  color: var(--c-text-inv);
  padding: clamp(var(--sp-6), 6vw, var(--sp-12));
  border-radius: var(--radius);
}
.contact__title {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  color: #fff;
  margin-bottom: var(--sp-4);
}
.contact__text { color: rgba(236,230,216,.85); max-width: 30em; }
.contact__tel {
  margin-top: var(--sp-6);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--sp-2);
}
.contact__tel-label {
  font-size: var(--fz-small);
  letter-spacing: .18em;
  color: var(--c-accent-2);
  font-family: var(--ff-body);
}
.contact__tel a { font-family: var(--ff-en); font-size: 1.9rem; color: #fff; letter-spacing: .04em; }
.contact__tel-time { font-size: var(--fz-small); color: rgba(236,230,216,.7); }
.contact__lead .button { margin-top: var(--sp-6); }

.contact__company {
  padding: clamp(var(--sp-4), 4vw, var(--sp-8)) var(--sp-1);
}
.company__name {
  font-size: 1.25rem;
  color: var(--c-main);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--c-line);
}
.company__list > div {
  display: grid;
  grid-template-columns: 7em 1fr;
  gap: var(--sp-2);
  padding-block: var(--sp-2);
  border-bottom: 1px solid var(--c-line);
}
.company__list dt { font-size: .85rem; color: var(--c-accent-deep); letter-spacing: .06em; }
.company__list dd { font-size: .92rem; }
.company__note { margin-top: var(--sp-4); font-size: var(--fz-small); color: #6f6a5e; line-height: 1.8; }

/* --- フッター ------------------------------------------------------- */
.site-footer {
  background: var(--c-main-deep);
  color: var(--c-text-inv);
  padding-block: var(--sp-8);
}
.site-footer__inner { display: flex; flex-direction: column; gap: var(--sp-3); }
.logo--footer { color: #fff; }
.logo--footer .logo__ja { font-size: 1.15rem; }
.logo--footer .logo__en { color: var(--c-accent-2); opacity: 1; }
.site-footer small { color: rgba(236,230,216,.6); font-size: var(--fz-small); }

/* --- スクロール表示（reveal）の安全パターン（PART 2-8）------------- */
.reveal { opacity: 1; }
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s ease, transform .7s ease;
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* =====================================================================
   レスポンシブ（モバイルファースト → 拡張）
   ===================================================================== */
@media (min-width: 768px) {
  /* ナビ：デスクトップは横並び・トグル非表示 */
  .nav__toggle { display: none; }
  .nav__menu {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--sp-4);
    margin-left: auto;
    background: none;
    color: inherit;
    padding: 0;
    border: 0;
    box-shadow: none;
    opacity: 1; visibility: visible; transform: none;
  }
  .nav__list { flex-direction: row; gap: var(--sp-4); }
  .nav__list li { border-bottom: 0; }
  .nav__list a {
    display: inline-block;
    padding: 4px 0;
    font-size: .9rem;
    color: inherit;
    position: relative;
  }
  .nav__list a::after {
    content: ""; position: absolute; left: 0; bottom: 0;
    width: 100%; height: 1px; background: currentColor;
    transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
  }
  .nav__list a:hover { color: var(--c-accent); }
  .nav__list a:hover::after { transform: scaleX(1); background: var(--c-accent); }
  .nav__cta { margin-top: 0; font-size: .85rem; padding: var(--sp-1) var(--sp-3); border-color: currentColor; }
  .site-header:not(.is-scrolled) .nav__cta { color: #fff; border-color: rgba(255,255,255,.6); }
  .site-header:not(.is-scrolled) .nav__cta:hover { background: #fff; color: var(--c-main); border-color: #fff; }

  .services { grid-template-columns: 1fr; }
  .service {
    grid-template-columns: 5rem 1fr auto;
    grid-template-areas: "no name icon" "no desc icon";
    column-gap: var(--sp-6);
    align-items: center;
    padding: var(--sp-12) 0;
  }
  .service__no { font-size: 2.4rem; align-self: start; padding-top: var(--sp-1); }
  .service__name { margin-top: 0; }
  .service__icon { align-self: center; }

  .stats { grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }

  .reasons { grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }

  .flow {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-4);
  }
  .flow__step {
    padding-left: 0;
    padding-top: var(--sp-8);
    padding-bottom: 0;
    border-left: none;
    border-top: 1px solid var(--c-line);
  }
  .flow__step:last-child { border-top-color: var(--c-line); }
  .flow__no { left: 0; top: 0; transform: translateY(-50%); }

  .contact {
    grid-template-columns: 1.1fr .9fr;
    gap: var(--sp-8);
    align-items: center;
  }
  .site-footer__inner { flex-direction: row; align-items: center; justify-content: space-between; }
}

@media (min-width: 1024px) {
  .hero__title { letter-spacing: .06em; }
  .issue {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    column-gap: var(--sp-12);
    row-gap: var(--sp-6);
    align-items: start;
  }
  .issue .eyebrow { grid-column: 1; grid-row: 1; }
  .issue__title { grid-column: 1; grid-row: 2; margin-bottom: 0; }
  /* 本文の頭を見出しの上段と揃える（視線の起点を一致させる）*/
  .issue__body { grid-column: 2; grid-row: 2; align-self: start; }
}

/* --- 動きを減らす設定の尊重（PART 2-8）----------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  /* ピン留めヒーローは縮約し、最初のシーンのみ静的表示 */
  .hero-scroll { height: 100svh; }
  .hero-bg[data-scene="0"] { opacity: 1; }
  .hero-scene[data-scene="0"] { opacity: 1; visibility: visible; transform: translateX(-50%); }
  .hero-scene[data-scene="0"] .hero__title .line__in { transform: none; }
  .hero-scene[data-scene="0"] .hero__eyebrow,
  .hero-scene[data-scene="0"] .hero__lead { opacity: 1; transform: none; }
  .hero-cue { display: none; }
}