/* ==========================================================================
   estrella / Portfolio Site
   ========================================================================== */

:root {
  --color-bg: #0c0c0e;
  --color-bg-alt: #131215;
  --color-bg-elev: #19181c;
  --color-ink: #f3f0ea;
  --color-ink-soft: #a19c92;
  --color-ink-dim: #8a857c; /* 背景色3種すべてでコントラスト比4.5:1以上 */
  --color-line: rgba(255, 255, 255, 0.09);
  --color-accent: #c9a24b;
  --color-accent-deep: #a9822f;
  --color-accent-soft: rgba(201, 162, 75, 0.12);
  --font-en: 'Cinzel', serif;
  --font-jp-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --header-h: 84px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.9;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

/* キーボード操作時のフォーカス表示（マウス操作時は出ない） */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 2px;
}
.work-card:focus-visible { outline-offset: 2px; border-color: var(--color-accent); }

.pc-only { display: inline; }
.sp-only { display: none; }

/* ---- loader ---- */
.loader {
  position: fixed; inset: 0; z-index: 999;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.loader.hide { opacity: 0; visibility: hidden; }
.loader-mark {
  font-family: var(--font-en);
  letter-spacing: 0.4em;
  color: var(--color-accent);
  font-size: 1rem;
}

/* ---- reveal ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
[data-reveal].in-view { opacity: 1; transform: translateY(0); }

/* ---- shared type ---- */
.eyebrow {
  font-family: var(--font-en);
  letter-spacing: 0.28em;
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 18px;
  text-transform: uppercase;
}
.eyebrow--center { text-align: center; }

.section-title {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--color-ink);
}
.section-title--center { text-align: center; }

.section-lead {
  margin-top: 20px;
  color: var(--color-ink-soft);
  max-width: 56ch;
  font-size: 1rem;
}
.section-lead--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head { margin-bottom: 64px; }

.section {
  padding: 140px 8vw;
  max-width: 1280px;
  margin: 0 auto;
}
.section--alt { background: var(--color-bg-alt); max-width: none; }
.section--alt > * { max-width: 1280px; margin-left: auto; margin-right: auto; }

/* ---- header ---- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 8vw;
  background: transparent;
  transition: background 0.4s ease, border-color 0.4s ease, height 0.4s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(12, 12, 14, 0.86);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--color-line);
  height: 68px;
}

.logo {
  font-family: var(--font-en);
  font-size: 1.05rem;
  letter-spacing: 0.22em;
  font-weight: 600;
  color: var(--color-ink);
}
.logo span { color: var(--color-accent); }

.global-nav { display: flex; align-items: center; gap: 40px; flex-shrink: 0; }
.logo { white-space: nowrap; }
.nav-link {
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  position: relative;
  transition: color 0.25s ease;
  white-space: nowrap;
}
.nav-link:hover { color: var(--color-ink); }
.nav-link--cta {
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 11px 24px;
  border-radius: 999px;
  font-weight: 700;
  transition: background 0.25s ease, transform 0.25s ease;
}
.nav-link--cta:hover { background: var(--color-accent-deep); transform: translateY(-1px); }
/* メニュー8項目がPC幅で1行に収まるよう、幅に応じて間隔を詰める */
@media (max-width: 1280px) and (min-width: 981px) { .global-nav { gap: 26px; } }
@media (max-width: 1120px) and (min-width: 981px) { .global-nav { gap: 18px; } .nav-link { font-size: 0.84rem; } .nav-link--cta { padding-left: 20px; padding-right: 20px; } }

.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  background: none; border: none;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 6px;
  z-index: 501;
}
.menu-toggle span {
  width: 24px; height: 1.5px; background: var(--color-ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---- hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: calc(var(--header-h) + 40px) 8vw 100px;
  text-align: center;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -20%; left: 50%;
  width: 900px; height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--color-accent-soft) 0%, transparent 68%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 900px; }

.hero-title {
  font-family: var(--font-jp-serif);
  font-weight: 700;
  font-size: clamp(2.3rem, 5.4vw, 4.1rem);
  line-height: 1.5;
  letter-spacing: 0.02em;
  margin-bottom: 32px;
}
.hero-title .hl { color: var(--color-accent); }
.hero-line { display: block; white-space: nowrap; } /* 「伝えたいことを／形にして届ける」の位置で必ず改行 */

.hero-lead {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
  max-width: 36em; /* PCで2行目が1行に収まる幅 */
  margin: 0 auto 44px;
}
.nobr { display: inline-block; } /* 語句の途中で改行させない */

.hero-actions { display: flex; align-items: center; justify-content: center; gap: 20px; margin-bottom: 40px; flex-wrap: wrap; }

/* ---- 現在の状況・最近の取り組み（ファーストビュー内・控えめ表示） ---- */
.hero-status {
  display: flex; flex-direction: column; align-items: center;
  gap: 10px;
  margin-bottom: 0;
  font-size: 0.8rem;
  line-height: 1.7;
}
.hero-status-now {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--color-ink);
}
.hero-status-now::before {
  content: "";
  flex: none;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.hero-news { display: flex; flex-direction: column; gap: 2px; text-align: left; }
.hero-news li { display: flex; gap: 22px; color: var(--color-ink-soft); }
.hero-news time {
  flex: none;
  font-family: var(--font-en);
  letter-spacing: 0.05em;
  color: var(--color-ink-dim);
}

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  padding: 17px 38px;
  border-radius: 999px;
  transition: background 0.25s ease, transform 0.25s ease;
}
.btn-primary:hover { background: var(--color-accent-deep); transform: translateY(-2px); }

.btn-ghost {
  display: inline-flex; align-items: center;
  color: var(--color-ink);
  padding: 17px 30px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  transition: border-color 0.25s ease, color 0.25s ease;
}
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }


.scroll-cue {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  display: flex; justify-content: center; padding-top: 8px;
}
.scroll-cue span {
  width: 3px; height: 8px; border-radius: 999px;
  background: var(--color-accent);
  animation: scrollcue 1.8s ease-in-out infinite;
}
@keyframes scrollcue {
  0% { opacity: 0; transform: translateY(0); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ---- service : process ---- */
.process-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  border: 1px solid var(--color-line);
  border-radius: 4px;
  overflow: hidden;
}
.process-card {
  background: var(--color-bg-alt);
  padding: 48px 36px;
  border-right: 1px solid var(--color-line);
}
.process-card:last-child { border-right: none; }
.process-num {
  font-family: var(--font-en);
  color: var(--color-accent);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 22px;
}
.process-card h3 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.15rem;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.process-card p { color: var(--color-ink-soft); font-size: 0.92rem; line-height: 1.85; }

/* ---- strength (2軸) ---- */
.strength-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  gap: 0;
  max-width: 1080px;
  margin: 0 auto;
}
.strength-card {
  background: var(--color-bg-elev);
  border: 1px solid var(--color-line);
  padding: 52px 44px;
  border-radius: 4px;
}
.strength-type {
  font-family: var(--font-en);
  color: var(--color-accent);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  margin-bottom: 18px;
}
.strength-title {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.4rem;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.strength-desc { color: var(--color-ink-soft); font-size: 0.94rem; margin-bottom: 28px; }
.strength-tags { display: flex; flex-direction: column; gap: 12px; }
.strength-tags li {
  font-size: 0.9rem;
  padding-left: 22px;
  position: relative;
  color: var(--color-ink);
}
.strength-tags li::before {
  content: '';
  position: absolute; left: 0; top: 10px;
  width: 10px; height: 1px;
  background: var(--color-accent);
}
.strength-note {
  margin-top: 28px;
  display: inline-block;
  font-size: 0.82rem;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-deep);
  padding: 7px 16px;
  border-radius: 999px;
}

.strength-divider {
  display: flex; align-items: center; justify-content: center;
  padding: 0 32px;
}
.strength-divider span {
  font-family: var(--font-jp-serif);
  font-size: 1.6rem;
  color: var(--color-ink-dim);
}

.strength-conclusion {
  margin: 72px auto 0;
  max-width: 640px;
  text-align: center;
  padding-top: 48px;
  border-top: 1px solid var(--color-line);
}
.conclusion-lead {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}
.conclusion-sub { color: var(--color-ink-soft); font-size: 0.95rem; }

/* ---- operation ---- */
.operation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 4px;
}
/* 5枚目の右側の空きマスを、カードと同じ色で埋める（1列表示では不要） */
.operation-grid::after { content: ""; background: var(--color-bg); }
@media (max-width: 980px) { .operation-grid::after { display: none; } }
.operation-card {
  background: var(--color-bg);
  padding: 44px 34px;
}
.operation-num {
  font-family: var(--font-en);
  color: var(--color-accent);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 20px;
}
.operation-card h3 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.08rem;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.operation-card p { color: var(--color-ink-soft); font-size: 0.9rem; line-height: 1.85; }

/* ---- price ---- */
.price-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.price-card {
  background: var(--color-bg-elev);
  border: 1px solid var(--color-line);
  border-radius: 4px;
  padding: 44px 52px;
}
.price-name {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.12rem;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.plan-card {
  margin-top: 24px;
  background: var(--color-bg-elev);
  border: 1px solid var(--color-accent-deep);
  border-radius: 4px;
  padding: 48px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.plan-card-head { min-width: 240px; }
.plan-label {
  font-family: var(--font-en);
  color: var(--color-accent);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  margin-bottom: 12px;
}
.plan-price {
  font-family: var(--font-jp-serif);
  font-size: 1.3rem;
  color: var(--color-ink);
}
.plan-price b { font-size: 2rem; color: var(--color-accent); font-weight: 700; }
.plan-price span { color: var(--color-ink-soft); font-size: 1rem; }
.plan-note { color: var(--color-ink-soft); font-size: 0.9rem; max-width: 36ch; flex: 1; min-width: 240px; }
.plan-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--color-ink-soft);
  font-size: 0.86rem;
  line-height: 1.7;
  flex: 1 1 320px;
  min-width: 260px;
  max-width: 480px;
}
.plan-list li { position: relative; padding-left: 16px; }
.plan-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.plan-list b { color: var(--color-ink); font-weight: 600; }

/* ---- works ---- */
.works-disclaimer {
  text-align: center;
  margin-top: 18px;
  font-size: 0.78rem;
  color: var(--color-ink-soft);
}
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.work-card {
  display: block;
  background: var(--color-bg-elev);
  border: 1px solid var(--color-line);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.work-card:hover { border-color: var(--color-accent); transform: translateY(-4px); }
.work-thumb { aspect-ratio: 4/3; overflow: hidden; }
.work-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform 0.5s ease; }
.work-thumb--portrait img { object-position: center top; }
.work-thumb--bowl img { object-position: center 88%; }
.work-card:hover .work-thumb img { transform: scale(1.06); }

.work-body { padding: 30px 28px; }
.work-tag {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 14px;
}
.work-title {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.15rem;
  margin-bottom: 12px;
}
.work-desc { color: var(--color-ink-soft); font-size: 0.88rem; margin-bottom: 20px; }
.work-link { font-size: 0.86rem; color: var(--color-ink); }
.work-card:hover .work-link { color: var(--color-accent); }

/* ---- profile ---- */
.profile-wrap {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 72px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
}
.profile-photo {
  aspect-ratio: 4/5;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--color-line);
}
.profile-photo img,
.profile-photo svg { width: 100%; height: 100%; object-fit: cover; object-position: 20% center; display: block; }
.profile-name {
  font-family: var(--font-jp-serif);
  font-size: 1.7rem;
  font-weight: 600;
  margin: 20px 0 8px;
  display: flex; align-items: baseline; gap: 14px;
}
.profile-name span {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-ink-dim);
  letter-spacing: 0.06em;
}
.profile-role { color: var(--color-accent); font-size: 0.92rem; margin-bottom: 26px; }
.profile-intro {
  font-family: var(--font-jp-serif);
  color: var(--color-ink);
  font-size: 1.08rem;
  line-height: 1.85;
  margin-bottom: 22px;
  text-wrap: pretty;
}
.profile-bio { color: var(--color-ink-soft); font-size: 0.95rem; margin-bottom: 20px; text-wrap: pretty; }
.profile-bio:last-of-type { margin-bottom: 40px; }
.profile-stats {
  display: flex; gap: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--color-line);
  flex-wrap: wrap;
}
.profile-stat b {
  font-family: var(--font-jp-serif);
  font-size: 1.25rem;
  color: var(--color-ink);
  display: block;
  margin-bottom: 8px;
}
.profile-stat b span { font-size: 0.9rem; color: var(--color-accent); }
.profile-stat p { font-size: 0.78rem; color: var(--color-ink-dim); }

/* ---- faq ---- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-bg-elev);
  border: 1px solid var(--color-line);
  border-radius: 4px;
  transition: border-color 0.3s ease;
  overflow: hidden;
}

.faq-item:hover,
.faq-item:has(.faq-toggle:focus-visible) {
  border-color: var(--color-accent-deep);
}

.faq-item.is-open {
  border-color: var(--color-accent-deep);
}

.faq-question { margin: 0; }

.faq-toggle {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  background: none;
  border: none;
  text-align: left;
  color: var(--color-ink);
  padding: 26px 28px;
}

.faq-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.faq-num {
  flex-shrink: 0;
  font-family: var(--font-en);
  color: var(--color-accent);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  padding-top: 4px;
}

.faq-q-text {
  flex: 1;
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  border: 1px solid var(--color-accent-deep);
  border-radius: 50%;
  transition: border-color 0.3s ease;
}
.faq-item:hover .faq-icon { border-color: var(--color-accent); }
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  background: var(--color-accent);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.faq-icon::before {
  width: 12px; height: 1.5px;
  transform: translate(-50%, -50%);
}
.faq-icon::after {
  width: 1.5px; height: 12px;
  transform: translate(-50%, -50%);
}
.faq-toggle[aria-expanded="true"] .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
.faq-answer[hidden] { display: none; }
.faq-answer-inner { overflow: hidden; }
.faq-answer-inner p {
  padding: 0 28px 26px;
  color: var(--color-ink-soft);
  font-size: 0.92rem;
  line-height: 1.9;
}
.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

/* ---- contact form ---- */
.contact-form { max-width: 620px; margin: 0 auto; }
.form-row { margin-bottom: 26px; }
.form-row label {
  display: block;
  font-size: 0.88rem;
  color: var(--color-ink);
  margin-bottom: 10px;
}
.req {
  font-size: 0.68rem;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 2px 8px;
  border-radius: 999px;
  margin-left: 6px;
  vertical-align: middle;
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: 2px;
  padding: 14px 16px;
  color: var(--color-ink);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.25s ease;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-row textarea { resize: vertical; }
.form-row select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-ink-dim) 50%), linear-gradient(135deg, var(--color-ink-dim) 50%, transparent 50%);
  background-position: calc(100% - 22px) center, calc(100% - 16px) center;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.submit-btn {
  width: 100%;
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  padding: 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  transition: background 0.25s ease, transform 0.25s ease;
}
.submit-btn:hover { background: var(--color-accent-deep); transform: translateY(-2px); }

.form-note { margin-top: 18px; font-size: 0.9rem; min-height: 1.4em; }
.form-privacy { margin-top: 14px; font-size: 0.76rem; color: var(--color-ink-dim); }

/* ---- footer ---- */
.site-footer {
  padding: 72px 8vw 48px;
  text-align: center;
  border-top: 1px solid var(--color-line);
}
.footer-logo {
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.22em;
  color: var(--color-ink);
}
.footer-logo span { color: var(--color-accent); }
.footer-nav {
  display: flex; justify-content: center; gap: 10px 30px;
  margin: 20px 0;
  flex-wrap: wrap;
}
.footer-nav a {
  display: inline-block;
  padding: 8px 4px;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  transition: color 0.25s ease;
}
.footer-nav a:hover { color: var(--color-accent); }
.footer-copy { font-size: 0.78rem; color: var(--color-ink-dim); }

.back-to-top {
  position: fixed; right: 28px; bottom: 28px; z-index: 400;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-elev);
  border: 1px solid var(--color-line);
  border-radius: 50%;
  color: var(--color-accent);
  font-size: 1.1rem;
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, border-color 0.3s ease;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
/* 送信ボタン付近ではタップ領域の重なりを避けるため一時的に非表示にする */
.back-to-top.is-near-submit { opacity: 0; visibility: hidden; pointer-events: none; }
.back-to-top:hover { border-color: var(--color-accent); }

/* ---- responsive ---- */
@media (max-width: 1080px) {
  .strength-grid { grid-template-columns: 1fr; gap: 24px; }
  .strength-divider { padding: 0; }
  .strength-divider span { display: inline-block; transform: rotate(90deg); }

  .operation-grid { grid-template-columns: repeat(2, 1fr); }
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .profile-wrap { grid-template-columns: 280px 1fr; gap: 48px; }
}

@media (max-width: 980px) {
  .pc-only { display: none; }
  .sp-only { display: inline; }

  .global-nav {
    position: fixed; top: 0; right: 0;
    width: min(78vw, 340px); height: 100vh;
    background: var(--color-bg-elev);
    flex-direction: column; align-items: flex-start;
    justify-content: center;
    gap: 30px;
    padding: 40px 44px;
    border-left: 1px solid var(--color-line);
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .global-nav.open { transform: translateX(0); }
  .nav-link--cta { margin-top: 8px; }
  .menu-toggle { display: flex; }

  .section { padding: 100px 6vw; }
  .process-grid { grid-template-columns: 1fr; }
  .process-card { border-right: none; border-bottom: 1px solid var(--color-line); }
  .process-card:last-child { border-bottom: none; }


  .operation-grid { grid-template-columns: 1fr; }
  .operation-card { border-bottom: 1px solid var(--color-line); }
  .plan-card { flex-direction: column; align-items: flex-start; text-align: left; }

  .works-grid { grid-template-columns: 1fr; }

  .profile-wrap { grid-template-columns: 1fr; }
  .profile-photo { max-width: 320px; margin: 0 auto; }
  .profile-body { text-align: center; }
  .profile-name { justify-content: center; }
  .profile-stats { justify-content: center; }

  .faq-list { max-width: 100%; }

  .footer-nav { gap: 20px 26px; }
}

@media (max-width: 620px) {
  .hero { padding-bottom: 72px; }
  .hero-title { font-size: clamp(1.9rem, 9vw, 2.6rem); margin-bottom: 24px; }
  .hero-lead { margin-bottom: 32px; }
  .hero-actions { flex-direction: column; width: 100%; margin-bottom: 28px; gap: 12px; }
  .hero-status { margin-bottom: 0; font-size: 0.74rem; align-items: stretch; text-align: left; }
  .hero-news li { gap: 16px; }
  .scroll-cue { display: none; } /* スマホでは金額欄の文字と重なるため非表示 */
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .strength-card { padding: 40px 28px; }

  .price-grid { grid-template-columns: 1fr; gap: 16px; }
  .price-card { padding: 32px 28px; }
  .plan-card { padding: 36px 28px; margin-top: 16px; }
  .plan-card .btn-ghost { width: 100%; justify-content: center; }

  .faq-toggle { padding: 20px 20px; gap: 14px; }
  .faq-q-text { font-size: 1rem; }
  .faq-icon { width: 26px; height: 26px; }
  .faq-answer-inner p { padding: 0 20px 22px; font-size: 0.9rem; }
}