/* ============================================================
   NENE LP — Design System & Styles
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --c-white: #FFFFFF;
  --c-off-white: #FAFAFA;
  --c-light-gray: #F5F5F5;
  --c-mid-gray: #E0E0E0;
  --c-text-gray: #888888;
  --c-dark: #333333;
  --c-black: #111111;
  --c-accent: #6B7B8D;
  --c-accent-light: #8A9AAC;

  /* Typography */
  --ff-en: 'Inter', sans-serif;
  --ff-jp: 'Noto Sans JP', sans-serif;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Spacing */
  --section-py: 120px;
  --section-px: 80px;
  --container-max: 1200px;

  /* Transitions */
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Header */
  --header-height: 80px;
  --header-height-shrunk: 60px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ff-jp);
  color: var(--c-dark);
  background-color: var(--c-white);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

a:hover {
  opacity: 0.7;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Utility --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

.section-label {
  font-family: var(--ff-en);
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--ff-en);
  font-size: 2rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.08em;
  color: var(--c-black);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 0.95rem;
  font-weight: var(--fw-light);
  color: var(--c-text-gray);
  line-height: 1.8;
  max-width: 600px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--c-black);
  color: var(--c-white);
}

.btn-primary:hover {
  background-color: var(--c-dark);
  opacity: 1;
}

.btn-outline {
  background-color: transparent;
  color: var(--c-black);
  border: 1px solid var(--c-black);
}

.btn-outline:hover {
  background-color: var(--c-black);
  color: var(--c-white);
  opacity: 1;
}

.btn-white {
  background-color: var(--c-white);
  color: var(--c-black);
}

.btn-white:hover {
  background-color: var(--c-off-white);
  opacity: 1;
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.8125rem;
}

.btn-arrow::after {
  content: '→';
  transition: transform var(--transition-base);
}

.btn-arrow:hover::after {
  transform: translateX(4px);
}

/* --- Fade-in Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: height var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  align-items: center;
}

.header.is-scrolled {
  height: var(--header-height-shrunk);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

.header-logo {
  font-family: var(--ff-en);
  font-size: 1.5rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.15em;
  color: var(--c-black);
  transition: font-size var(--transition-base);
}

.header.is-scrolled .header-logo {
  font-size: 1.25rem;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.header-nav a {
  font-size: 0.8125rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.05em;
  color: var(--c-dark);
  position: relative;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--c-black);
  transition: width var(--transition-base);
}

.header-nav a:hover {
  opacity: 1;
}

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

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 28px;
  height: 28px;
  z-index: 1100;
  position: relative;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--c-black);
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.is-open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu a {
  font-family: var(--ff-en);
  font-size: 1.25rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.15em;
  color: var(--c-black);
}

.mobile-menu-sns {
  display: flex;
  gap: 24px;
  margin-top: 20px;
}

.mobile-menu-sns a {
  font-size: 1rem;
  letter-spacing: 0;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  height: 90vh;
  height: 90dvh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-overlay {
  display: none;
}

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

.hero-content {
  position: relative;
  z-index: 3;
  width: 36%;
  min-width: 340px;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 0 0 40px max(var(--section-px), calc((100vw - var(--container-max)) / 2 + var(--section-px)));
  padding: 32px;
  border-radius: 20px;
  color: var(--c-black);
  background-color: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.hero-catch {
  font-family: var(--ff-en);
  font-size: 2.4rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.1em;
  line-height: 1.4;
  margin-bottom: 12px;
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s ease-out 0.3s forwards;
}

.hero-sub {
  font-family: var(--ff-en);
  font-size: 0.9rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1s ease-out 0.4s forwards;
}

.hero-sub-copy {
  font-size: 0.9rem;
  font-weight: var(--fw-light);
  color: var(--c-text-gray);
  letter-spacing: 0.05em;
  line-height: 1.6;
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1s ease-out 0.7s forwards;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1s ease-out 1s forwards;
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn-hero-main {
  background-color: var(--c-black);
  color: var(--c-white);
  border: 1px solid var(--c-black);
}
.btn-hero-main:hover {
  background-color: var(--c-dark);
  color: var(--c-white);
}

.btn-hero-sub {
  background-color: transparent;
  color: var(--c-black);
  border: 1px solid var(--c-black);
}
.btn-hero-sub:hover {
  background-color: var(--c-black);
  color: var(--c-white);
}

/* ============================================================
   QUICK REQUESTS
   ============================================================ */
.quick-requests {
  background: var(--c-off-white);
  padding: 72px 0 64px;
  position: relative;
  z-index: 10;
  border-top: 1px solid rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

.quick-requests-header {
  text-align: center;
  margin-bottom: 48px;
}

.quick-requests-title {
  font-size: 1.35rem;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  font-weight: var(--fw-semibold);
  color: var(--c-black);
}

.quick-requests-sub {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--c-text-gray);
}

.quick-requests-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.quick-req-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--c-white);
  padding: 32px 24px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.quick-req-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.quick-req-label {
  font-weight: var(--fw-semibold);
  font-size: 1.05rem;
  color: var(--c-black);
  margin-bottom: 16px;
  position: relative;
}

.quick-req-label::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background-color: rgba(0, 0, 0, 0.15);
  margin: 12px auto 0;
}

.quick-req-desc {
  font-size: 0.85rem;
  color: var(--c-text-gray);
  line-height: 1.6;
}

/* ============================================================
   NEWS / INFORMATION
   ============================================================ */
.news {
  padding: var(--section-py) 0;
  background-color: var(--c-white);
}

.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  align-items: baseline;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--c-mid-gray);
  transition: background-color var(--transition-base);
}

.news-item:first-child {
  border-top: 1px solid var(--c-mid-gray);
}

.news-item:hover {
  background-color: var(--c-off-white);
}

.news-date {
  font-family: var(--ff-en);
  font-size: 0.8125rem;
  font-weight: var(--fw-regular);
  color: var(--c-text-gray);
  letter-spacing: 0.05em;
  white-space: nowrap;
  min-width: 100px;
}

.news-category {
  font-size: 0.6875rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  background-color: var(--c-light-gray);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.news-title {
  font-size: 0.9375rem;
  font-weight: var(--fw-regular);
  color: var(--c-dark);
  flex: 1;
}

.news-more {
  text-align: center;
  margin-top: 48px;
}

/* ============================================================
   PROFILE
   ============================================================ */
.profile {
  padding: var(--section-py) 0;
  background-color: var(--c-off-white);
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  margin-top: 56px;
}

.profile-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.profile-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.profile-image:hover img {
  transform: scale(1.02);
}

.profile-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.profile-name {
  font-family: var(--ff-en);
  font-size: 2.5rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.15em;
  color: var(--c-black);
}

.profile-title {
  font-family: var(--ff-en);
  font-size: 0.875rem;
  font-weight: var(--fw-regular);
  letter-spacing: 0.15em;
  color: var(--c-accent);
}

.profile-badges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
  margin-bottom: 32px;
}

.profile-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  gap: 6px;
  background-color: var(--c-off-white);
  padding: 16px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-light-gray);
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.badge-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.badge-text {
  font-family: var(--ff-ja);
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  line-height: 1.4;
  color: var(--c-dark);
}

@media (max-width: 480px) {
  .profile-badges {
    gap: 8px;
  }
  .profile-badge {
    padding: 12px 4px;
    gap: 4px;
  }
  .badge-icon {
    font-size: 1.5rem;
  }
  .badge-text {
    font-size: 0.65rem;
    letter-spacing: -0.02em;
  }
}

.profile-summary {
  font-size: 1rem;
  line-height: 2;
  color: var(--c-dark);
  font-weight: var(--fw-light);
}

.profile-detail {
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--c-dark);
  font-weight: var(--fw-light);
}

.profile-highlights {
  margin-top: 8px;
}

.profile-highlights h4 {
  font-size: 0.8125rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 16px;
}

.profile-highlights ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.profile-highlights li {
  font-size: 0.875rem;
  font-weight: var(--fw-light);
  color: var(--c-dark);
  padding-left: 16px;
  position: relative;
}

.profile-highlights li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 1px;
  background-color: var(--c-accent);
}

/* ============================================================
   SERVICES / WORKS
   ============================================================ */
.services {
  padding: var(--section-py) 0;
  background-color: var(--c-white);
}

.services-header {
  text-align: center;
  margin-bottom: 64px;
}

.services-header .section-subtitle {
  margin: 0 auto;
}

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

.service-card {
  background-color: var(--c-off-white);
  border-radius: var(--radius-md);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.service-number {
  font-family: var(--ff-en);
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.15em;
  color: var(--c-accent);
}

.service-name {
  font-size: 1.25rem;
  font-weight: var(--fw-semibold);
  color: var(--c-black);
  letter-spacing: 0.05em;
}

.service-target {
  font-size: 0.8125rem;
  color: var(--c-accent);
  font-weight: var(--fw-medium);
}

.service-desc-layers {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.layer-benefit {
  font-size: 0.9375rem;
  color: var(--c-black);
  line-height: 1.6;
}

.layer-rationale {
  font-size: 0.875rem;
  color: var(--c-dark);
  line-height: 1.7;
  padding: 10px;
  background-color: var(--c-light-gray);
  border-left: 3px solid var(--c-accent);
  border-radius: 2px;
}

.layer-specifics {
  font-size: 0.875rem;
  color: var(--c-text-gray);
  line-height: 1.6;
}

.service-card .btn {
  align-self: flex-start;
  margin-top: 8px;
}

/* Visual Break Photo */
.visual-break {
  width: 100%;
  padding: 0;
  overflow: hidden;
}

.visual-break img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

#process + .visual-break img {
  object-position: center 30%;
}

#faq + .visual-break img {
  object-position: center 20%;
}

/* ============================================================
   SNS / FOLLOW
   ============================================================ */
.sns {
  padding: var(--section-py) 0;
  background-color: var(--c-off-white);
}

.sns-header {
  text-align: center;
  margin-bottom: 56px;
}

.sns-header .section-subtitle {
  margin: 0 auto;
}

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

.sns-card {
  background-color: var(--c-white);
  border-radius: var(--radius-md);
  padding: 48px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.sns-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.sns-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--c-light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-base);
}

.sns-card:hover .sns-icon {
  background-color: var(--c-black);
}

.sns-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--c-dark);
  transition: fill var(--transition-base);
}

.sns-card:hover .sns-icon svg {
  fill: var(--c-white);
}

.sns-name {
  font-family: var(--ff-en);
  font-size: 1rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.1em;
  color: var(--c-black);
}

.sns-handle {
  font-size: 0.8125rem;
  color: var(--c-text-gray);
  font-weight: var(--fw-light);
}

/* ============================================================
   LOGO (CSS Text)
   ============================================================ */
.nene-logo {
  font-family: var(--ff-en);
  font-weight: 200;
  letter-spacing: 0.15em;
  line-height: 1;
  text-transform: uppercase;
  display: inline-block;
}

.header-logo {
  display: flex;
  align-items: center;
}

.header-logo .nene-logo {
  font-size: 1.5rem;
  color: var(--c-black);
  transition: font-size var(--transition-base);
}

.header.is-scrolled .header-logo .nene-logo {
  font-size: 1.25rem;
}

.hero-logo-wrapper {
  margin-bottom: 32px;
}

.hero-logo-text {
  font-size: 4rem;
  color: var(--c-white);
  animation: heroFadeIn 1s ease-out 0s forwards;
  opacity: 0;
  transform: translateY(30px);
}

.footer-logo-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
  pointer-events: none;
  opacity: 0.04;
}

.footer-logo-watermark .nene-logo {
  font-size: 25vw;
  color: var(--c-white);
  white-space: nowrap;
}

/* ============================================================
   VOICE (Reviews)
   ============================================================ */
.voice {
  padding: var(--section-py) 0;
  background-color: var(--c-light-gray);
  overflow: hidden;
}

.voice-header {
  text-align: center;
  margin-bottom: 64px;
}

.voice-carousel {
  position: relative;
  width: 100%;
  padding-bottom: 40px;
  /* space for dots */
}

.voice-track-container {
  overflow: hidden;
  width: 100%;
  border-radius: var(--radius-md);
  cursor: grab;
}

.voice-track-container:active {
  cursor: grabbing;
}

.voice-track {
  display: flex;
  gap: 20px;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
}

.voice-card {
  flex: 0 0 calc(33.333% - 13.4px);
  min-width: 280px;
  background-color: var(--c-white);
  padding: 32px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
  gap: 12px;
  user-select: none;
  white-space: normal;
}

.voice-catch {
  font-size: 1.05rem;
  font-weight: var(--fw-semibold);
  color: var(--c-black);
  border-bottom: 2px solid var(--c-accent);
  padding-bottom: 8px;
  margin-bottom: 4px;
}

.voice-text {
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--c-dark);
  font-weight: var(--fw-regular);
  white-space: normal;
}

/* Navigation Buttons */
.voice-nav-btn {
  position: absolute;
  top: calc(50% - 20px);
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-white);
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-black);
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-base);
}

.voice-nav-btn:hover {
  background: var(--c-black);
  color: var(--c-white);
}

.voice-nav-btn.prev {
  left: -24px;
}

.voice-nav-btn.next {
  right: -24px;
}

/* Dots */
.voice-dots {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.voice-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: all var(--transition-base);
}

.voice-dot.is-active {
  background: var(--c-accent);
  transform: scale(1.2);
}

/* ============================================================
   WORKS (実績)
   ============================================================ */
.works {
  padding: var(--section-py) 0;
  background-color: var(--c-off-white);
}

.works-header {
  text-align: center;
  margin-bottom: 64px;
}

.works-category {
  margin-bottom: 64px;
}

.works-category:last-child {
  margin-bottom: 0;
}

.works-category-title {
  font-family: var(--ff-en);
  font-size: 1.25rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.1em;
  color: var(--c-accent);
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-mid-gray);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.works-card {
  background-color: var(--c-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.works-label {
  font-family: var(--ff-en);
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-mid-gray);
  margin-bottom: 4px;
}

.works-badge {
  display: inline-block;
  padding: 3px 10px;
  background-color: var(--c-light-gray);
  color: var(--c-accent);
  font-size: 0.7rem;
  font-weight: var(--fw-medium);
  border-radius: 4px;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

/* YouTube 16:9 レスポンシブ */
.works-embed-yt {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.works-embed-yt iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-sm);
}

/* Instagram 埋め込み */
.works-embed-ig {
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.works-embed-ig .instagram-media {
  margin: 0 auto !important;
  min-width: 0 !important;
}

/* Instagram Reel Fallback Card */
.works-reel-link {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  background-color: var(--c-off-white);
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.works-reel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.works-reel-link:hover .works-reel-img {
  transform: scale(1.05);
}

.works-reel-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background-color: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-base);
  pointer-events: none;
}

.works-reel-link:hover .works-reel-play-icon {
  background-color: rgba(0, 0, 0, 0.5);
}

.works-reel-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.works-reel-title {
  font-size: 1rem;
  font-weight: var(--fw-semibold);
  color: var(--c-black);
}

.works-reel-desc {
  font-size: 0.85rem;
  color: var(--c-text-gray);
  line-height: 1.6;
}

.works-card .btn {
  align-self: flex-start;
}

/* ============================================================
   PROCESS
   ============================================================ */
.process {
  padding: var(--section-py) 0;
  background-color: var(--c-white);
}

.process-header {
  text-align: center;
  margin-bottom: 64px;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  background-color: var(--c-off-white);
  padding: 40px 24px;
  border-radius: var(--radius-md);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.process-number {
  font-family: var(--ff-en);
  font-size: 3rem;
  font-weight: 200;
  color: var(--c-accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 8px;
}

.process-name {
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  color: var(--c-black);
}

.process-desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--c-dark);
  font-weight: var(--fw-light);
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  padding: var(--section-py) 0;
  background-color: var(--c-off-white);
}

.faq-header {
  text-align: center;
  margin-bottom: 64px;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.faq-item {
  background-color: var(--c-white);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  overflow: hidden;
}

.faq-q-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: 16px;
  transition: background-color var(--transition-base);
}

.faq-q-btn:hover {
  background-color: var(--c-light-gray);
}

.faq-q-text {
  font-size: 1.125rem;
  font-weight: var(--fw-medium);
  color: var(--c-black);
}

.faq-q-icon {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.faq-q-icon::before,
.faq-q-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: var(--c-black);
  transform: translate(-50%, -50%);
  transition: transform var(--transition-base);
}

.faq-q-icon::before {
  width: 14px;
  height: 2px;
}

.faq-q-icon::after {
  width: 2px;
  height: 14px;
}

/* 展開時：縦線を消して「＋」から「−」にする */
.faq-q-btn[aria-expanded="true"] .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-a-wrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}

.faq-q-btn[aria-expanded="true"]+.faq-a-wrapper {
  grid-template-rows: 1fr;
}

.faq-a-content {
  overflow: hidden;
  padding: 0 32px;
}

.faq-q-btn[aria-expanded="true"]+.faq-a-wrapper .faq-a-content {
  padding: 0 32px 32px 32px;
}

.faq-a-content p {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-dark);
  font-weight: var(--fw-light);
  margin-bottom: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--c-mid-gray);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  padding: var(--section-py) 0;
  background-color: var(--c-white);
}

.contact-header {
  text-align: center;
  margin-bottom: 64px;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  margin-top: 56px;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-text p {
  font-size: 0.9375rem;
  font-weight: var(--fw-light);
  line-height: 2;
  color: var(--c-dark);
}

.contact-image {
  margin-top: 32px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.contact-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: var(--fw-medium);
  color: var(--c-dark);
  letter-spacing: 0.05em;
}

.form-group label .required {
  color: #C0392B;
  font-size: 0.6875rem;
  margin-left: 8px;
}

.form-group label .optional {
  color: var(--c-text-gray);
  font-size: 0.6875rem;
  margin-left: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--c-mid-gray);
  border-radius: var(--radius-sm);
  font-family: var(--ff-jp);
  font-size: 0.9375rem;
  font-weight: var(--fw-light);
  color: var(--c-dark);
  background-color: var(--c-white);
  transition: border-color var(--transition-base);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-submit {
  margin-top: 8px;
}

.form-submit .btn {
  width: 100%;
  padding: 18px;
  font-size: 0.9375rem;
}

/* Thank you message */
.thank-you {
  display: none;
  text-align: center;
  padding: 80px 40px;
}

.thank-you.is-visible {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.thank-you-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--c-light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.thank-you h3 {
  font-size: 1.25rem;
  font-weight: var(--fw-medium);
  color: var(--c-black);
}

.thank-you p {
  font-size: 0.9375rem;
  font-weight: var(--fw-light);
  color: var(--c-dark);
  line-height: 2;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 80px 0 56px;
  background-color: var(--c-black);
  color: var(--c-white);
  position: relative;
  overflow: hidden;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.footer-logo {
  font-family: var(--ff-en);
  font-size: 1.25rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.15em;
}

.footer-sns {
  display: flex;
  gap: 20px;
  position: relative;
  z-index: 1;
}

.footer-sns a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.footer-sns a:hover {
  border-color: var(--c-white);
  background-color: rgba(255, 255, 255, 0.1);
  opacity: 1;
}

.footer-sns svg {
  width: 16px;
  height: 16px;
  fill: var(--c-white);
}

.footer-links {
  display: flex;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.footer-links a {
  font-size: 0.75rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links a:hover {
  color: var(--c-white);
  opacity: 1;
}

.footer-copy {
  font-size: 0.6875rem;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1;
}

/* ============================================================
   RESPONSIVE — Tablet (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --section-py: 96px;
    --section-px: 48px;
  }

  .hero-catch {
    font-size: 2.75rem;
  }

  .quick-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .profile-grid {
    gap: 48px;
  }

  .services-grid {
    gap: 24px;
  }

  .service-card {
    padding: 36px 28px;
  }

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

  .contact-inner {
    gap: 48px;
  }

  .voice-carousel {
    padding-bottom: 60px;
  }

  .voice-track-container {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 24px;
    margin-bottom: -24px;
  }

  .voice-track-container::-webkit-scrollbar {
    display: none;
  }

  .voice-track {
    padding: 0 5%;
    transform: none !important;
    transition: none !important;
  }

  .voice-card {
    flex: 0 0 90%;
    padding: 32px 24px;
    scroll-snap-align: center;
  }

  /* Show navigation buttons firmly positioned at bottom on mobile */
  .voice-nav-btn {
    display: flex;
    top: auto;
    bottom: 0px;
    width: 44px;
    height: 44px;
    transform: none;
  }

  .voice-nav-btn.prev {
    left: 24px;
  }

  .voice-nav-btn.next {
    right: 24px;
  }

  .voice-dots {
    bottom: 18px;
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   RESPONSIVE — Mobile (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --section-py: 80px;
    --section-px: 24px;
    --header-height: 64px;
    --header-height-shrunk: 56px;
  }

  /* Header */
  .header-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Hero */
  .hero {
    height: auto;
    min-height: 100vh;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background-color: var(--c-off-white);
  }

  .hero-bg {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 60vh;
    min-height: 400px;
  }

  .hero-overlay {
    display: none;
  }

  .hero-content {
    position: relative;
    z-index: 10;
    width: 92%;
    max-width: 440px;
    margin: -40px auto 48px auto;
    padding: 28px 24px;
    background-color: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    color: var(--c-black);
    justify-content: center;
    text-align: center;
  }

  .hero-catch {
    color: #111111;
    font-weight: var(--fw-medium);
  }

  .hero-sub {
    color: #444444;
  }

  .hero-sub-copy {
    color: #666666;
  }

  .hero-slide {
    object-position: center top;
  }

  .hero-catch {
    font-size: 1.5rem;
    margin-bottom: 12px;
  }

  .hero-sub {
    font-size: 0.75rem;
    margin-bottom: 16px;
  }

  .hero-sub-copy {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 24px;
  }

  .hero-cta {
    flex-direction: column;
    gap: 12px;
  }

  .hero-cta .btn {
    width: 100%;
    text-align: center;
  }

  /* Buttons inherit black styling from desktop */

  /* Quick Requests */
  .quick-requests {
    padding: 48px 0 40px;
  }
  .quick-requests-header {
    margin-bottom: 32px;
  }
  .quick-requests-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .quick-req-item {
    padding: 24px 12px;
    border-radius: 8px;
  }
  .quick-requests-title {
    font-size: 1.2rem;
  }
  .quick-req-label {
    font-size: 0.95rem;
    margin-bottom: 12px;
  }
  .quick-req-label::after {
    margin: 8px auto 0;
  }
  .quick-req-desc {
    font-size: 0.75rem;
    line-height: 1.5;
  }

  /* Section Titles */
  .section-title {
    font-size: 1.5rem;
  }

  /* News */
  .news-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .news-item {
    flex-direction: column;
    gap: 8px;
    padding: 20px 0;
  }

  .news-meta {
    display: flex;
    gap: 12px;
    align-items: center;
  }

  /* Profile */
  .profile-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .profile-name {
    font-size: 2rem;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .visual-break img {
    height: 240px;
  }

  /* SNS */
  .sns-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .sns-card {
    flex-direction: row;
    padding: 24px;
    text-align: left;
    gap: 16px;
  }

  .sns-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
  }

  .sns-card-text {
    flex: 1;
  }

  /* Contact */
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  /* Footer */
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }

  .hero-logo-text {
    font-size: 2.75rem;
    color: #b8b8b8;
  }

  .voice-carousel {
    padding-bottom: 32px;
  }

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

  .process-step {
    padding: 32px 24px;
  }

  .faq-q-text {
    font-size: 1rem;
  }

  .faq-q-btn {
    padding: 20px 24px;
  }

  .faq-a-content {
    padding: 0 24px;
  }

  .faq-q-btn[aria-expanded="true"]+.faq-a-wrapper .faq-a-content {
    padding: 0 24px 24px 24px;
  }
}

/* ============================================================
   RESPONSIVE — Small Mobile (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --section-px: 20px;
  }

  .hero-catch {
    font-size: 1.75rem;
  }

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

/* ============================================================
   FLOATING CTA (Mobile)
   ============================================================ */
.floating-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 12px 20px;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
  z-index: 100;
  border-top: 1px solid var(--c-light-gray);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-cta.is-visible {
  transform: translateY(0);
}

.floating-cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
}

.floating-cta-text {
  font-size: 0.8125rem;
  font-weight: var(--fw-bold);
  color: var(--c-dark);
}

.floating-cta .btn {
  margin: 0;
  padding: 10px 24px;
  font-size: 0.8125rem;
}

@media (max-width: 768px) {
  .floating-cta {
    display: block;
  }
}