/* ==========================================================================
   StartStep — Base Styles
   Minimal / Glassmorphism / Pale-blue & soft sunlight
   ========================================================================== */

:root {
  --color-bg: #f6f9fc;
  --color-bg-soft: #eef4f9;
  --color-sun: #fff8ea;
  --color-primary: #6fa3c9;
  --color-primary-dark: #3f6c8c;
  --color-primary-deep: #2b4f68;
  --color-text: #33414c;
  --color-text-soft: #66757f;
  --color-text-faint: #92a1aa;
  --color-border: rgba(255, 255, 255, 0.55);
  --color-border-soft: rgba(111, 163, 201, 0.18);

  --glass-bg: rgba(255, 255, 255, 0.5);
  --glass-bg-strong: rgba(255, 255, 255, 0.68);
  --glass-blur: blur(18px);

  --shadow-soft: 0 8px 32px rgba(63, 108, 140, 0.08);
  --shadow-softer: 0 4px 18px rgba(63, 108, 140, 0.06);

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --font-jp: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Yu Gothic Medium", "Yu Gothic", "Noto Sans JP",
    "Segoe UI", Meiryo, sans-serif;

  --max-width: 1120px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-jp);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.85;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------------------------------------------------------------------- */
/* Ambient sunlight background                                             */
/* ---------------------------------------------------------------------- */

.ambient-light {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 50% at 82% -8%, rgba(255, 246, 214, 0.75), transparent 60%),
    radial-gradient(ellipse 60% 45% at 8% 15%, rgba(207, 229, 246, 0.55), transparent 65%),
    radial-gradient(ellipse 70% 60% at 90% 85%, rgba(214, 234, 248, 0.5), transparent 60%),
    linear-gradient(180deg, #f8fbfd 0%, #eef4f9 45%, #eef6fb 100%);
}

.ambient-light::before {
  content: "";
  position: absolute;
  top: -10%;
  right: -6%;
  width: 60vw;
  height: 60vw;
  max-width: 720px;
  max-height: 720px;
  background: radial-gradient(circle, rgba(255, 250, 225, 0.55) 0%, rgba(255, 250, 225, 0) 70%);
  filter: blur(10px);
  animation: driftGlow 26s ease-in-out infinite alternate;
}

@keyframes driftGlow {
  0% { transform: translate(0, 0) scale(1); opacity: 0.9; }
  100% { transform: translate(-3%, 4%) scale(1.06); opacity: 1; }
}

/* ---------------------------------------------------------------------- */
/* Header / Navigation                                                     */
/* ---------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border-soft);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-primary-deep);
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

.brand-name {
  letter-spacing: 0.06em;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary-dark);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.main-nav {
  display: flex;
}

.main-nav ul {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-size: 0.88rem;
  color: var(--color-text-soft);
  font-weight: 500;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--color-primary-dark);
}

/* ---------------------------------------------------------------------- */
/* Buttons                                                                  */
/* ---------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(63, 108, 140, 0.22);
}

.btn-outline {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-primary-dark);
  border: 1px solid rgba(111, 163, 201, 0.4);
}

.btn-outline:hover {
  transform: translateY(-2px);
  background: var(--glass-bg-strong);
  box-shadow: var(--shadow-softer);
}

/* ---------------------------------------------------------------------- */
/* Section common                                                          */
/* ---------------------------------------------------------------------- */

section {
  position: relative;
  padding: 168px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 88px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 700;
  color: var(--color-primary-deep);
  letter-spacing: 0.03em;
}

.section-lead {
  max-width: 760px;
  margin: 24px auto 0;
  color: var(--color-text-soft);
  font-size: 1rem;
}

/* Glass card base */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

/* ---------------------------------------------------------------------- */
/* Hero                                                                     */
/* Panel（テキスト）＋ 写真セクションを縦に積む構成。                        */
/* ---------------------------------------------------------------------- */

.hero {
  padding: 0;
}

.hero-panel {
  padding: 172px 0 88px;
}

.hero-inner {
  max-width: 640px;
  margin: 0;
  text-align: left;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-primary-dark);
  padding: 8px 20px;
  border-radius: 999px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  margin-bottom: 32px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-primary-deep);
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}

.hero-desc {
  font-size: 1.02rem;
  color: var(--color-text-soft);
  margin-bottom: 44px;
}

.hero-actions {
  display: flex;
  gap: 18px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* 写真セクション：全幅・大きめの高さで1枚写真を主役にする */
.hero-photo {
  position: relative;
  width: 100%;
  height: clamp(420px, 66vh, 760px);
  overflow: hidden;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

/* 写真の下端をページ背景色へ自然に溶け込ませるフェード */
.hero-photo::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 34%;
  background: linear-gradient(to bottom, transparent, var(--color-bg) 92%);
  pointer-events: none;
}

/* ---------------------------------------------------------------------- */
/* Why StartStep                                                           */
/* ---------------------------------------------------------------------- */

.why-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 0;
  text-align: center;
}

.why-content p {
  color: var(--color-text-soft);
  font-size: 1.05rem;
  line-height: 2.1;
}

.why-content p + p {
  margin-top: 32px;
}

/* ---------------------------------------------------------------------- */
/* About                                                                    */
/* ---------------------------------------------------------------------- */

.about-lead {
  max-width: 820px;
  margin: 0 auto 56px;
  text-align: center;
  color: var(--color-text-soft);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.value-card {
  padding: 40px 32px;
}

.value-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.value-card p {
  color: var(--color-text-soft);
  font-size: 0.94rem;
}

/* ---------------------------------------------------------------------- */
/* Products                                                                 */
/* ---------------------------------------------------------------------- */

.product-feature {
  padding: 52px;
  margin-bottom: 32px;
}

.product-feature-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.product-feature-head h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  letter-spacing: 0.04em;
}

.product-desc {
  color: var(--color-text-soft);
  margin-bottom: 28px;
  max-width: 760px;
}

.product-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.product-columns h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.check-list li {
  position: relative;
  padding-left: 22px;
  color: var(--color-text-soft);
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.product-note-block {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border-soft);
}

.product-note-block p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
}

.product-note-block p + p {
  margin-top: 10px;
}

.data-note {
  font-size: 0.85rem;
  color: var(--color-text-faint);
  margin-top: 14px;
}

.product-store {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.product-store-badge {
  display: inline-block;
  line-height: 0;
}

.product-store-badge img {
  display: block;
  height: 46px;
  width: auto;
  border-radius: 5px;
}

.upcoming-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.upcoming-card {
  padding: 36px 32px;
  position: relative;
}

.upcoming-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.upcoming-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  letter-spacing: 0.04em;
}

.badge-soon {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-primary-dark);
  background: rgba(111, 163, 201, 0.14);
  padding: 4px 12px;
  border-radius: 999px;
}

.upcoming-card p {
  color: var(--color-text-soft);
  font-size: 0.93rem;
}

/* ---------------------------------------------------------------------- */
/* Services                                                                 */
/* ---------------------------------------------------------------------- */

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.service-card {
  padding: 44px 38px;
}

.service-card .service-index {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  margin-bottom: 18px;
  display: block;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.service-card .service-en {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-faint);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.service-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
}

/* ---------------------------------------------------------------------- */
/* Business                                                                 */
/* ---------------------------------------------------------------------- */

.business-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: start;
}

.business-table {
  padding: 12px;
}

.business-table table {
  width: 100%;
  border-collapse: collapse;
}

.business-table th,
.business-table td {
  text-align: left;
  padding: 20px 24px;
  font-size: 0.94rem;
  border-bottom: 1px solid var(--color-border-soft);
}

.business-table tr:last-child th,
.business-table tr:last-child td {
  border-bottom: none;
}

.business-table th {
  width: 34%;
  color: var(--color-text-faint);
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.business-table td {
  color: var(--color-text);
}

.business-table td a {
  color: var(--color-primary-dark);
  border-bottom: 1px solid rgba(111, 163, 201, 0.4);
}

.current-business {
  padding: 36px 32px;
}

.current-business h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.current-business li {
  position: relative;
  padding-left: 20px;
  color: var(--color-text-soft);
  font-size: 0.92rem;
  margin-bottom: 14px;
}

.current-business li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ---------------------------------------------------------------------- */
/* Contact                                                                  */
/* ---------------------------------------------------------------------- */

.contact-card {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 64px 48px;
}

.contact-card p {
  color: var(--color-text-soft);
  margin-bottom: 36px;
}

/* ---------------------------------------------------------------------- */
/* Footer                                                                   */
/* ---------------------------------------------------------------------- */

.site-footer {
  padding: 56px 0 40px;
  border-top: 1px solid var(--color-border-soft);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}

.footer-brand {
  font-weight: 700;
  color: var(--color-primary-deep);
  letter-spacing: 0.08em;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-soft);
}

.footer-links a:hover {
  color: var(--color-primary-dark);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

/* ---------------------------------------------------------------------- */
/* Legal pages (terms / privacy)                                           */
/* ---------------------------------------------------------------------- */

.legal-page {
  padding: 160px 0 120px;
  min-height: 100vh;
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-primary-dark);
  margin-bottom: 40px;
}

.legal-card {
  padding: 56px;
}

.legal-card h1 {
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  color: var(--color-primary-deep);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.legal-applies {
  color: var(--color-text-faint);
  font-size: 0.88rem;
  margin-bottom: 44px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border-soft);
}

.legal-card section + section {
  margin-top: 40px;
}

.legal-card h2 {
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}

.legal-card p,
.legal-card li {
  color: var(--color-text-soft);
  font-size: 0.95rem;
}

.legal-card li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
}

.legal-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.legal-card .legal-contact-link {
  color: var(--color-primary-dark);
  border-bottom: 1px solid rgba(111, 163, 201, 0.4);
}

.legal-updated {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-soft);
  color: var(--color-text-faint);
  font-size: 0.82rem;
}

/* ---------------------------------------------------------------------- */
/* Fade-in on scroll                                                        */
/* ---------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------------------------------------------------------------------- */
/* Responsive                                                               */
/* ---------------------------------------------------------------------- */

@media (max-width: 900px) {
  .value-grid {
    grid-template-columns: 1fr;
  }

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

  .business-layout {
    grid-template-columns: 1fr;
  }

  .product-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--color-border-soft);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .main-nav.is-open {
    max-height: 480px;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
  }

  .main-nav a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border-soft);
  }

  .nav-toggle {
    display: flex;
  }

  section {
    padding: 100px 0;
  }

  .section-head {
    margin-bottom: 56px;
  }

  .hero-panel {
    padding: 128px 0 56px;
  }

  .hero-inner {
    max-width: 100%;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-photo {
    height: clamp(280px, 46vh, 420px);
  }

  .why-content {
    padding: 0 4px;
  }

  .product-feature {
    padding: 32px 24px;
  }

  .service-card {
    padding: 32px 26px;
  }

  .legal-card {
    padding: 32px 24px;
  }

  .contact-card {
    padding: 44px 26px;
  }

  .business-table th,
  .business-table td {
    padding: 14px 16px;
    font-size: 0.86rem;
  }

  .business-table th {
    width: 40%;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .footer-links {
    flex-direction: column;
    gap: 10px;
  }
}