/* ==========================================================================
   SAN Official LP - Design System & Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Root Variables & Theme Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Core Colors */
  --color-base-bg: #FFFFFF;
  --color-bg-cream: #FFFDF7;
  --color-bg-soft-yellow: #FFF9E6;
  --color-bg-soft-pink: #FFF5F7;
  --color-bg-soft-green: #F5F9ED;

  /* Member Colors */
  --color-shiho: #fcc800;
  /* ひまわり色 */
  --color-shiho-light: #FFF8D6;
  --color-aya: #ed6d46;
  /* 丹色 */
  --color-aya-light: #FDECE7;
  --color-naoya: #c8d921;
  /* 若草色 */
  --color-naoya-light: #F6F9D8;

  /* Accent Colors */
  --color-accent-pink: #FF90B7;
  --color-accent-cream: #FFF8EE;
  --color-accent-yellow: #FFE885;
  --color-accent-green: #D8EB87;

  /* Typography & Lines */
  --color-text-main: #382B24;
  /* 上品で温かみのあるダークブラウン */
  --color-text-sub: #6B5B52;
  /* 補足用マイルドブラウン */
  --color-text-muted: #9E8E85;
  --color-border: #F0E6DE;
  --color-border-strong: #E2D4C9;

  /* Typography Scale */
  --font-family-ja: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-en: 'Outfit', 'Fredoka', cursive, sans-serif;

  /* Layout & Spacing */
  --container-max-width: 1180px;
  --section-padding-desktop: 100px 0;
  --section-padding-mobile: 60px 0;

  /* Shadows & Effects */
  --shadow-soft: 0 10px 30px rgba(56, 43, 36, 0.05);
  --shadow-card: 0 14px 36px rgba(56, 43, 36, 0.08);
  --shadow-hover: 0 20px 45px rgba(56, 43, 36, 0.12);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-normal: 0.35s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & General Styles
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-ja);
  color: var(--color-text-main);
  background-color: var(--color-base-bg);
  line-height: 1.8;
  letter-spacing: 0.04em;
  overflow-x: hidden;
  word-wrap: break-word;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul,
ol {
  list-style: none;
}

button,
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 90%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* Section Rhythm (Alternating Backgrounds) */
.section-white {
  background-color: var(--color-base-bg);
}

.section-cream {
  background-color: var(--color-bg-cream);
}

.section-pink {
  background-color: var(--color-bg-soft-pink);
}

.section-green {
  background-color: var(--color-bg-soft-green);
}

/* --------------------------------------------------------------------------
   3. Decorative Elements & Badges
   -------------------------------------------------------------------------- */

/* Generalized Watermark Background Kanji */
.section-bg-kanji {
  position: absolute;
  top: 50%;
  left: -4%;
  transform: translateY(-50%);
  font-family: "Shippori Mincho", "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(22rem, 52vw, 44rem);
  font-weight: 900;
  line-height: 0.85;
  user-select: none;
  pointer-events: none;
  z-index: 1;
}

/* Background Kanji Color Variations per Section Theme */
.about-section .section-bg-kanji,
.about-bg-kanji {
  color: #F0E39A;
}

/* Pastel Yellow (#FFF6C5) */
.reason-section .section-bg-kanji {
  color: #C5E1A5;
}

/* Light Green (#E8F5E9) */
.members-section .section-bg-kanji {
  color: #EFEBE4;
}

/* White (#FFFFFF) */
.service-section .section-bg-kanji {
  color: #F4E8B8;
}

/* Cream (#FFFBEA) */
.works-section .section-bg-kanji {
  color: #EFEBE4;
}

/* White (#FFFFFF) */
.contact-section .section-bg-kanji {
  color: #F7CBD0;
}

/* Soft Pink (#FFF0F3) */
.reason-section .section-bg-kanji,
.members-section .section-bg-kanji,
.service-section .section-bg-kanji {
  left: auto;
  right: -4%;
}

.reason-section,
.members-section,
.service-section,
.works-section,
.contact-section {
  position: relative;
  overflow: hidden;
}

.reason-section .container,
.members-section .container,
.service-section .container,
.works-section .container,
.contact-section .container {
  position: relative;
  z-index: 2;
}

/* Unified Section Title Group */
.section-header {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}

.section-en-tag {
  font-family: var(--font-family-en);
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3rem);
  color: var(--color-text-main);
  letter-spacing: 0.14em;
  display: block;
  margin-bottom: 4px;
  line-height: 1.1;
}

.section-wavy-underline {
  width: 140px;
  height: 14px;
  margin: 6px auto 14px;
}

.section-jp-title {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: 0.12em;
}

.section-lead {
  max-width: 680px;
  margin: 18px auto 0;
  font-size: 1.05rem;
  color: var(--color-text-sub);
  line-height: 1.9;
}


/* Decorative Floating Elements */
.sparkle-icon {
  position: absolute;
  pointer-events: none;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   4. Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  transition: var(--transition-normal);
  border-bottom: 1px solid rgba(240, 230, 222, 0.6);
}

.site-header.scrolled {
  height: 70px;
  box-shadow: 0 4px 20px rgba(56, 43, 36, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-text-main);
  letter-spacing: 0.08em;
}

.logo-sun-img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  transition: transform var(--transition-bounce);
}

.logo-link:hover .logo-sun-img {
  transform: rotate(15deg) scale(1.1);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-main);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background-color: var(--color-shiho);
  border-radius: var(--radius-pill);
  transition: var(--transition-normal);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 100%;
}

.header-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background-color: var(--color-shiho);
  color: var(--color-text-main);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(252, 200, 0, 0.35);
  transition: var(--transition-normal);
}

.header-cta-btn:hover {
  transform: translateY(-2px);
  background-color: #f7bd00;
  box-shadow: 0 8px 20px rgba(252, 200, 0, 0.45);
}

/* Mobile Hamburger Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  cursor: pointer;
  z-index: 1100;
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-text-main);
  border-radius: 2px;
  transition: var(--transition-normal);
}

/* --------------------------------------------------------------------------
   5. First View (FV) - HONO Reference Style
   -------------------------------------------------------------------------- */
.fv-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 720px;
  max-height: 1080px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: #FFFDF7;
}

/* Animated Mesh Gradient Background (Vibrant Member Colors Interspersed) */
.fv-bg-mesh {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  background-color: #FFFDF7;
  overflow: hidden;
}

.mesh-ball {
  position: absolute;
  border-radius: 50%;
  filter: blur(68px);
  will-change: transform;
  pointer-events: none;
}

/* 1. Yellow - Top Left (#fcc800) */
.mesh-ball-yellow-1 {
  top: -12%;
  left: -8%;
  width: 48vw;
  height: 48vw;
  min-width: 360px;
  min-height: 360px;
  background: radial-gradient(circle, rgba(252, 200, 0, 0.88) 0%, rgba(252, 200, 0, 0.25) 65%, transparent 85%);
  animation: meshFlowDiagonal1 16s ease-in-out infinite alternate;
}

/* 2. Orange - Top Right (#ed6d46) */
.mesh-ball-orange-1 {
  top: -15%;
  right: -10%;
  width: 52vw;
  height: 52vw;
  min-width: 380px;
  min-height: 380px;
  background: radial-gradient(circle, rgba(237, 109, 70, 0.88) 0%, rgba(237, 109, 70, 0.22) 65%, transparent 85%);
  animation: meshFlowDiagonal2 18s ease-in-out infinite alternate;
}

/* 3. Green - Top Center / Mid (#c8d921) */
.mesh-ball-green-1 {
  top: 10%;
  left: 32%;
  width: 42vw;
  height: 42vw;
  min-width: 320px;
  min-height: 320px;
  background: radial-gradient(circle, rgba(200, 217, 33, 0.85) 0%, rgba(200, 217, 33, 0.2) 65%, transparent 85%);
  animation: meshFlowDiagonal3 20s ease-in-out infinite alternate;
}

/* 4. Yellow - Bottom Right / Center (#fcc800) */
.mesh-ball-yellow-2 {
  bottom: -10%;
  right: 5%;
  width: 50vw;
  height: 50vw;
  min-width: 370px;
  min-height: 370px;
  background: radial-gradient(circle, rgba(252, 200, 0, 0.85) 0%, rgba(252, 200, 0, 0.25) 65%, transparent 85%);
  animation: meshFlowDiagonal1 22s ease-in-out infinite alternate;
}

/* 5. Orange - Mid Left (#ed6d46) */
.mesh-ball-orange-2 {
  top: 38%;
  left: -12%;
  width: 46vw;
  height: 46vw;
  min-width: 340px;
  min-height: 340px;
  background: radial-gradient(circle, rgba(237, 109, 70, 0.82) 0%, rgba(237, 109, 70, 0.2) 65%, transparent 85%);
  animation: meshFlowDiagonal2 19s ease-in-out infinite alternate;
}

/* 6. Green - Bottom Left (#c8d921) */
.mesh-ball-green-2 {
  bottom: -15%;
  left: 15%;
  width: 48vw;
  height: 48vw;
  min-width: 350px;
  min-height: 350px;
  background: radial-gradient(circle, rgba(200, 217, 33, 0.85) 0%, rgba(200, 217, 33, 0.22) 65%, transparent 85%);
  animation: meshFlowDiagonal3 21s ease-in-out infinite alternate;
}

/* 7. Yellow - Center Mid-Right (#fcc800) */
.mesh-ball-yellow-3 {
  top: 25%;
  right: 18%;
  width: 40vw;
  height: 40vw;
  min-width: 300px;
  min-height: 300px;
  background: radial-gradient(circle, rgba(252, 200, 0, 0.85) 0%, rgba(252, 200, 0, 0.2) 65%, transparent 85%);
  animation: meshFlowDiagonal1 17s ease-in-out infinite alternate;
}

/* Clear diagonal movement animations (Flowing from Top-Right to Bottom-Left) */
@keyframes meshFlowDiagonal1 {
  0% {
    transform: translate(60px, -50px) scale(1) rotate(0deg);
  }
  50% {
    transform: translate(-70px, 60px) scale(1.06) rotate(-8deg);
  }
  100% {
    transform: translate(60px, -50px) scale(1) rotate(0deg);
  }
}

@keyframes meshFlowDiagonal2 {
  0% {
    transform: translate(80px, -65px) scale(1.05) rotate(0deg);
  }
  50% {
    transform: translate(-85px, 75px) scale(0.95) rotate(10deg);
  }
  100% {
    transform: translate(80px, -65px) scale(1.05) rotate(0deg);
  }
}

@keyframes meshFlowDiagonal3 {
  0% {
    transform: translate(50px, -40px) scale(0.96) rotate(0deg);
  }
  50% {
    transform: translate(-75px, 65px) scale(1.07) rotate(-12deg);
  }
  100% {
    transform: translate(50px, -40px) scale(0.96) rotate(0deg);
  }
}

/* Center Huge Logo Image */
.fv-center-logo {
  position: relative;
  z-index: 10;
  text-align: center;
  user-select: none;
  pointer-events: none;
  animation: fvLogoFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fv-logo-heading {
  margin: 0;
  line-height: 1;
}

.fv-logo-img {
  width: clamp(300px, 65vw, 760px);
  max-width: 88%;
  height: auto;
  display: inline-block;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

@keyframes fvLogoFadeIn {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Peeking Character at Bottom Right */
.fv-peeking-character {
  position: absolute;
  right: 3.5%;
  bottom: 45px;
  z-index: 35;
  width: clamp(130px, 15vw, 210px);
  pointer-events: none;
  animation: peekingBob 4s ease-in-out infinite alternate;
}

.peeking-sun-img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 20px rgba(56, 43, 36, 0.12));
}

@keyframes peekingBob {
  0% {
    transform: translateY(0) rotate(0deg);
  }

  100% {
    transform: translateY(-8px) rotate(2deg);
  }
}

/* Floating Pill Bar Inside FV */
.fv-floating-pill-wrapper {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  width: 90%;
  max-width: 680px;
  pointer-events: auto;
}

.fv-floating-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 10px 12px 10px 28px;
  border-radius: var(--radius-pill);
  box-shadow: 0 16px 40px rgba(56, 43, 36, 0.12);
  border: 1.5px solid rgba(240, 230, 222, 0.9);
  transition: var(--transition-normal);
}

.fv-floating-pill:hover {
  box-shadow: 0 20px 48px rgba(56, 43, 36, 0.16);
  transform: translateY(-2px);
}

.pill-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.pill-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 700;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.pill-btn-sub {
  background-color: var(--color-bg-cream);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.pill-btn-sub:hover {
  background-color: var(--color-shiho-light);
  border-color: var(--color-shiho);
}

.pill-btn-main {
  background-color: var(--color-text-main);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(56, 43, 36, 0.2);
}

.pill-btn-main:hover {
  background-color: #241a15;
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   5.5. Intro Section (Arch Transition & Catchphrase)
   -------------------------------------------------------------------------- */
.fv-intro-section {
  position: relative;
  background-color: #FFFFFF;
  padding-top: 100px;
  padding-bottom: 120px;
  z-index: 15;
}

.arch-curve-wrapper {
  position: absolute;
  top: -130px;
  left: 0;
  width: 100%;
  height: 132px;
  pointer-events: none;
  z-index: 16;
}

.arch-curve-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.intro-content-container {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  padding-top: 30px;
}

.intro-catchphrase {
  font-size: clamp(1.8rem, 4.2vw, 2.75rem);
  font-weight: 500;
  color: var(--color-text-main);
  line-height: 1.7;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.intro-subcopy {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  font-weight: 400;
  color: var(--color-text-sub);
  letter-spacing: 0.08em;
}

/* Purpose Message in Intro Section */
.intro-purpose-container {
  margin-top: 54px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  text-align: center;
}

.intro-purpose-text {
  font-size: clamp(1.02rem, 2vw, 1.15rem);
  font-weight: 400;
  color: var(--color-text-main);
  line-height: 2.05;
  letter-spacing: 0.05em;
  max-width: 680px;
  margin: 0 auto;
}

.intro-purpose-highlight {
  margin-top: 10px;
  padding: 24px 32px;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(255, 144, 183, 0.1);
  max-width: 740px;
  width: 100%;
}

.intro-purpose-highlight p {
  font-size: clamp(1.08rem, 2.3vw, 1.25rem);
  font-weight: 700;
  color: #ed6d46;
  line-height: 1.9;
  letter-spacing: 0.06em;
}

/* Responsive Styles for FV & Intro Section */
@media (max-width: 768px) {
  .fv-section {
    height: 90vh;
    min-height: 580px;
  }

  .fv-peeking-character {
    right: 2%;
    bottom: 25px;
    width: 115px;
    z-index: 35;
  }

  .fv-floating-pill-wrapper {
    width: 92%;
    bottom: 20px;
    transform: translateX(-50%);
  }

  .fv-floating-pill {
    flex-direction: column;
    padding: 14px;
    gap: 10px;
    text-align: center;
    border-radius: 24px;
  }

  .pill-buttons {
    width: 100%;
    justify-content: center;
  }

  .pill-btn {
    padding: 9px 16px;
    font-size: 0.85rem;
    flex: 1;
  }

  .arch-curve-wrapper {
    top: -65px;
    height: 67px;
  }

  .fv-intro-section {
    padding-top: 80px;
    padding-bottom: 70px;
  }

  .intro-catchphrase {
    font-size: 1.65rem;
    line-height: 1.6;
  }

  .intro-purpose-container {
    margin-top: 40px;
    gap: 20px;
  }

  .intro-purpose-highlight {
    padding: 18px 20px;
  }

  .wave-divider-top {
    top: -50px;
    height: 51px;
  }

  .wave-divider-bottom {
    bottom: -50px;
    height: 51px;
  }

  .about-section {
    padding: 70px 0 80px;
  }

  .about-header-group {
    margin-bottom: 32px;
  }
}

/* --------------------------------------------------------------------------
   6. Section 1: SANについて (燦) - Pastel Yellow & Wave Divider
   -------------------------------------------------------------------------- */
.about-section {
  position: relative;
  background-color: #FFF6C5;
  /* Member color #fcc800 soft pastel yellow */
  padding: 110px 0 120px;
  z-index: 20;
}

/* Watermark Background Kanji "燦" */
.about-bg-kanji {
  position: absolute;
  top: 50%;
  left: -4%;
  transform: translateY(-50%);
  font-family: "Shippori Mincho", "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(22rem, 52vw, 44rem);
  font-weight: 900;
  color: #F0E39A;
  line-height: 0.85;
  user-select: none;
  pointer-events: none;
  z-index: 1;
}

/* Wave Dividers (Top & Bottom) */
.wave-divider-top {
  position: absolute;
  top: -85px;
  left: 0;
  width: 100%;
  height: 86px;
  overflow: hidden;
  pointer-events: none;
  z-index: 21;
}

.wave-divider-bottom {
  position: absolute;
  bottom: -85px;
  left: 0;
  width: 100%;
  height: 86px;
  overflow: hidden;
  pointer-events: none;
  z-index: 21;
}

.wave-inner-top,
.wave-inner-bottom {
  width: 200%;
  height: 100%;
  animation: waveSwaySlow 14s ease-in-out infinite alternate;
}

.wave-svg {
  width: 100%;
  height: 100%;
  display: block;
}

@keyframes waveSwaySlow {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-240px);
  }
}

/* Header Group for About Section */
.about-header-group {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}

.about-en-tag {
  font-family: var(--font-family-en);
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3rem);
  color: var(--color-text-main);
  letter-spacing: 0.14em;
  display: block;
  margin-bottom: 4px;
  line-height: 1.1;
}

.about-wavy-underline {
  width: 140px;
  height: 14px;
  margin: 6px auto 14px;
}

.wavy-underline-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.about-jp-title {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: 0.12em;
}

.about-card {
  background-color: transparent;
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: none;
  border: none;
  display: grid;
  grid-template-columns: 1fr 340px;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.about-text-content {
  font-size: 1.08rem;
  line-height: 2;
  color: var(--color-text-main);
}

.about-highlight {
  font-weight: 700;
  color: var(--color-aya);
}

.about-visual-side {
  position: relative;
  text-align: center;
}

.about-sun-img {
  max-width: 280px;
  margin: 0 auto;
  animation: sunBob 5s ease-in-out infinite;
}

/* --------------------------------------------------------------------------
   7. Section 2: Purpose / パーパスメッセージ (賛)
   -------------------------------------------------------------------------- */
.purpose-section {
  padding: var(--section-padding-desktop);
  position: relative;
}

.purpose-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 60px;
  box-shadow: var(--shadow-card);
  border: 1.5px solid var(--color-border);
  display: grid;
  grid-template-columns: 320px 1fr;
  align-items: center;
  gap: 52px;
}

.purpose-visual {
  text-align: center;
  position: relative;
}

.purpose-sun-img {
  max-width: 270px;
  margin: 0 auto;
  transition: transform var(--transition-normal);
}

.purpose-card:hover .purpose-sun-img {
  transform: scale(1.05);
}

.purpose-text {
  font-size: 1.1rem;
  line-height: 2.1;
  color: var(--color-text-main);
}

.purpose-quote {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-main);
  background-color: var(--color-bg-soft-pink);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  margin-top: 24px;
  border-left: 5px solid var(--color-accent-pink);
}

/* --------------------------------------------------------------------------
   8. Section 3: 選ばれる理由 (参)
   -------------------------------------------------------------------------- */
.reason-section {
  padding: var(--section-padding-desktop);
}

.reason-lead-box {
  border-radius: var(--radius-md);
  padding: 24px 40px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 56px;
  font-size: 1.08rem;
  line-height: 2;
  color: var(--color-text-main);
}

.reason-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 56px;
}

/* Card: No border, no card box background, clean vertical layout */
.reason-card {
  background: transparent;
  border-radius: 0;
  padding: 0;
  border: none;
  box-shadow: none;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.reason-card:hover {
  transform: translateY(-6px);
}

/* Top Illustration Area with Organic Rounded Blob Background */
.reason-blob-wrap {
  width: 100%;
  max-width: 280px;
  height: 180px;
  border-radius: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-bounce);
}

.reason-card:hover .reason-blob-wrap {
  transform: scale(1.03) rotate(1deg);
}

/* Member Color Blobs */
.blob-shiho {
  background-color: var(--color-shiho);
  box-shadow: 0 12px 28px rgba(252, 200, 0, 0.25);
}

.blob-aya {
  background-color: var(--color-aya);
  box-shadow: 0 12px 28px rgba(237, 109, 70, 0.25);
}

.blob-hira {
  background-color: var(--color-naoya);
  box-shadow: 0 12px 28px rgba(200, 217, 33, 0.25);
}

/* Illustration inside Blob */
.reason-blob-img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(56, 43, 36, 0.12));
  transition: transform var(--transition-bounce);
}

.reason-card:hover .reason-blob-img {
  transform: translateY(-4px) scale(1.06);
}

/* Card Content Below Illustration */
.reason-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.reason-card-body {
  font-size: 0.96rem;
  color: var(--color-text-sub);
  line-height: 1.85;
  letter-spacing: 0.03em;
}

/* Centered Closing Message Box */
.reason-closing-box {
  text-align: center;
  max-width: 760px;
  margin: 20px auto 0;
  padding: 32px 40px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 28px;
  box-shadow: 0 10px 30px rgba(56, 43, 36, 0.06);
}

.reason-closing-text {
  font-size: clamp(1.08rem, 2.2vw, 1.25rem);
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.85;
  letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   9. Section 4: Members / メンバー紹介 (纂)
   -------------------------------------------------------------------------- */
.members-section {
  padding: var(--section-padding-desktop);
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.member-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.member-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

/* Member Top Badge & Color Accents */
.member-card-shiho {
  border-top: 6px solid var(--color-shiho);
}

.member-card-aya {
  border-top: 6px solid var(--color-aya);
}

.member-card-naoya {
  border-top: 6px solid var(--color-naoya);
}


.member-photo-wrap {
  width: 140px;
  height: 140px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.member-photo {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.member-name-en {
  font-family: var(--font-family-en);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-text-main);
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.member-initial {
  font-size: 1.25em;
  font-weight: 900;
  display: inline-block;
}

.initial-shiho {
  color: #fcc800;
}

.initial-aya {
  color: #ed6d46;
}

.initial-naoya {
  color: #c8d921;
}

.member-name-ja {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  margin-bottom: 12px;
}

.member-role {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.member-card-shiho .member-role {
  background-color: var(--color-shiho-light);
  color: var(--color-text-main);
}

.member-card-aya .member-role {
  background-color: var(--color-aya-light);
  color: var(--color-aya);
}

.member-card-naoya .member-role {
  background-color: var(--color-naoya-light);
  color: #5B660B;
}

.member-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.tag-item {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 3px 10px;
  background-color: var(--color-bg-cream);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text-sub);
}

.member-bio {
  font-size: 0.92rem;
  color: var(--color-text-main);
  line-height: 1.75;
  text-align: left;
}

/* --------------------------------------------------------------------------
   10. Section 5: Service / できること (算)
   -------------------------------------------------------------------------- */
.service-section {
  padding: var(--section-padding-desktop);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
  margin-bottom: 50px;
}

.service-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.service-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background-color: var(--color-shiho-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.service-card:nth-child(2) .service-icon-wrap {
  background-color: var(--color-aya-light);
}

.service-card-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 14px;
}

.service-card-desc {
  font-size: 1rem;
  color: var(--color-text-sub);
  line-height: 1.85;
  margin-bottom: 24px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.service-tag {
  font-family: var(--font-family-en);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 4px 12px;
  background-color: var(--color-bg-cream);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-text-main);
}

.service-custom-box {
  background: transparent;
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  border: none;
  font-size: 1.08rem;
  font-weight: 700;
  color: #c8d921;
}

/* --------------------------------------------------------------------------
   11. Section 6: Works / 実績 (産)
   -------------------------------------------------------------------------- */
.works-section {
  padding: var(--section-padding-desktop);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.work-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.work-thumb {
  height: 240px;
  background-color: #F7FAF5;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.work-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: linear-gradient(135deg, #FFF8EE 0%, #FFFDF7 100%);
}

.work-thumb-icon {
  font-size: 3.5rem;
}

.work-content {
  padding: 30px;
}

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.work-tag {
  font-family: var(--font-family-en);
  font-weight: 600;
  font-size: 0.78rem;
  padding: 3px 10px;
  background-color: var(--color-bg-soft-green);
  color: #4C5900;
  border-radius: 4px;
}

.work-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
  line-height: 1.45;
}

.work-desc {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 1.75;
}

.work-card-coming {
  background: repeating-linear-gradient(-45deg,
      #FFFFFF,
      #FFFFFF 15px,
      var(--color-bg-cream) 15px,
      var(--color-bg-cream) 30px);
  text-align: center;
}

.coming-sun-img {
  width: 100px;
  margin: 0 auto 12px;
}

/* --------------------------------------------------------------------------
   12. Section 7: Contact / お問い合わせ (桟)
   -------------------------------------------------------------------------- */
.contact-section {
  padding: var(--section-padding-desktop);
  position: relative;
}

.contact-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 56px 64px;
  box-shadow: var(--shadow-card);
  border: 1.5px solid var(--color-border);
  max-width: 860px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 28px;
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.form-label .req-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-aya);
  background-color: var(--color-aya-light);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
}

.form-label .opt-badge {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-sub);
  background-color: var(--color-bg-cream);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-cream);
  font-size: 1rem;
  color: var(--color-text-main);
  transition: var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-shiho);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 4px rgba(252, 200, 0, 0.2);
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background-color: var(--color-bg-cream);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.checkbox-label:hover {
  border-color: var(--color-shiho);
  background-color: #FFFFFF;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--color-shiho);
  width: 18px;
  height: 18px;
}

.form-submit-wrap {
  text-align: center;
  margin-top: 40px;
}

.form-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  max-width: 380px;
  padding: 18px 36px;
  background-color: var(--color-shiho);
  color: var(--color-text-main);
  font-size: 1.2rem;
  font-weight: 800;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 24px rgba(252, 200, 0, 0.4);
  transition: var(--transition-normal);
}

.form-submit-btn:hover {
  transform: translateY(-3px);
  background-color: #f7bd00;
  box-shadow: 0 12px 32px rgba(252, 200, 0, 0.5);
}

/* --------------------------------------------------------------------------
   13. Fixed Floating CTA Character (Right Bottom)
   -------------------------------------------------------------------------- */
.fixed-cta-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  cursor: pointer;
}

.speech-bubble {
  background-color: #FFFFFF;
  color: var(--color-text-main);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 10px 18px;
  border-radius: 20px;
  box-shadow: 0 8px 24px rgba(56, 43, 36, 0.15);
  border: 2px solid var(--color-shiho);
  margin-bottom: 8px;
  position: relative;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(10px) scale(0.9);
  pointer-events: none;
  transition: var(--transition-bounce);
}

.speech-bubble::after {
  content: '';
  position: absolute;
  bottom: -8px;
  right: 28px;
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid var(--color-shiho);
}

.fixed-cta-container:hover .speech-bubble,
.fixed-cta-container.active .speech-bubble {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.fixed-cta-sun {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background-color: #FFFFFF;
  border: 3px solid var(--color-shiho);
  box-shadow: 0 8px 24px rgba(56, 43, 36, 0.16);
  padding: 4px;
  overflow: hidden;
  transition: transform var(--transition-bounce);
  animation: floatCloud 3.5s ease-in-out infinite;
}

.fixed-cta-container:hover .fixed-cta-sun {
  transform: scale(1.12) rotate(10deg);
}

.fixed-cta-sun img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   14. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid var(--color-border);
  padding: 50px 0 30px;
  text-align: center;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 20px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--color-text-sub);
}

.footer-nav a:hover {
  color: var(--color-text-main);
}

.copyright {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   15. Keyframe Animations
   -------------------------------------------------------------------------- */
@keyframes floatCloud {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes sunBob {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-8px) rotate(3deg);
  }
}

@keyframes bounceSubtle {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translate(-50%, 0);
  }

  40% {
    transform: translate(-50%, -8px);
  }

  60% {
    transform: translate(-50%, -4px);
  }
}

/* IntersectionObserver reveal utility */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

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

/* --------------------------------------------------------------------------
   16. Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .fv-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }

  .fv-subtext {
    margin: 0 auto 32px;
  }

  .fv-cta-group {
    justify-content: center;
  }

  .about-card {
    grid-template-columns: 1fr;
    padding: 0;
    gap: 32px;
    text-align: center;
  }

  .purpose-card {
    grid-template-columns: 1fr;
    padding: 40px 32px;
    gap: 32px;
    text-align: center;
    display: flex;
    flex-direction: column-reverse;
  }

  .about-bg-kanji {
    left: -12vw;
    font-size: clamp(16rem, 60vw, 26rem);
  }

  .reason-cards-grid,
  .members-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .positioning-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .pos-box.pos-san {
    transform: none;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 70px;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    border-bottom: 2px solid var(--color-border);
    transform: translateY(-150%);
    transition: var(--transition-normal);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .fv-catchphrase {
    font-size: 2.1rem;
  }

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

  .checkbox-group {
    grid-template-columns: 1fr;
  }

  .contact-card {
    padding: 36px 24px;
  }
}

@media (max-width: 480px) {
  .fv-catchphrase {
    font-size: 1.85rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .fixed-cta-container {
    bottom: 16px;
    right: 16px;
  }

  .fixed-cta-sun {
    width: 58px;
    height: 58px;
  }

  .speech-bubble {
    font-size: 0.78rem;
    padding: 8px 14px;
  }
}