/* =============================================
   WEBAND — Main Stylesheet
   Design: Luxury Minimal
   ============================================= */

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

:root {
  --navy:       #0d1526;
  --navy-mid:   #1a2340;
  --navy-light: #2a3558;
  --gold:       #c9a84c;
  --gold-light: #e8c96a;
  --white:      #ffffff;
  --off-white:  #f5f3ef;
  --gray-100:   #f0ede8;
  --gray-300:   #c8c4bc;
  --gray-500:   #8a8680;
  --text:       #1a1a1a;
  --text-light: #5a5a5a;

  --font-en:    'Cormorant Garamond', Georgia, serif;
  --font-jp:    'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;

  --max-width:  1160px;
  --section-py: 120px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-jp);
  color: var(--text);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

/* ---- Utilities ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

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

/* ---- Reveal Animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 16px 48px;
  font-family: var(--font-jp);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gold);
  color: var(--navy);
  border-color: var(--gold);
}
.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--navy);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.77, 0, 0.175, 1);
  z-index: 0;
}
.btn--primary:hover {
  color: var(--gold);
}
.btn--primary:hover::after {
  transform: translateX(0);
}
.btn--primary span,
.btn--primary {
  position: relative;
  z-index: 1;
}

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

/* =============================================
   HEADER
   ============================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: rgba(13, 21, 38, 0.97);
  box-shadow: 0 1px 0 rgba(201, 168, 76, 0.2);
  backdrop-filter: blur(8px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 100px;
}

.header__logo {
  display: flex;
  align-items: center;
}

.header__logo img {
  height: 72px;
  width: auto;
}

.header__nav .nav__list {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__link {
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--white);
  opacity: 0.8;
  transition: opacity var(--transition), color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--transition);
}

.nav__link:hover {
  opacity: 1;
  color: var(--gold);
}
.nav__link:hover::after {
  width: 100%;
}

.nav__link--cta {
  padding: 10px 24px;
  border: 1px solid var(--gold);
  color: var(--gold);
  opacity: 1;
  letter-spacing: 0.12em;
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover {
  background: var(--gold);
  color: var(--navy);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--white);
  transition: all 0.3s ease;
}
.hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}
.hamburger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--navy);
  z-index: 999;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.mobile-menu.is-open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}
.mobile-menu__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}
.mobile-menu__link {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--white);
  transition: color var(--transition);
}
.mobile-menu__link:hover {
  color: var(--gold);
}

/* Founder mobile-only heading (hidden on PC) */
.founder__head-mobile {
  display: none;
}

/* Mobile menu close button */
.mobile-menu__close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}
.mobile-menu__close span {
  position: absolute;
  width: 28px;
  height: 1.5px;
  background: var(--white);
  transition: background var(--transition);
}
.mobile-menu__close span:first-child {
  transform: rotate(45deg);
}
.mobile-menu__close span:last-child {
  transform: rotate(-45deg);
}
.mobile-menu__close:hover span {
  background: var(--gold);
}
.mobile-menu.is-open .mobile-menu__close {
  display: flex;
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(13, 21, 38, 0.92) 0%, rgba(26, 35, 64, 0.85) 50%, rgba(13, 21, 38, 0.95) 100%),
    url('../img/hero-bg.jpg') center/cover no-repeat;
  z-index: 0;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(201, 168, 76, 0.08) 0%, transparent 60%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
}

.hero__sub {
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 24px;
  transition-delay: 0.1s;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 300;
  line-height: 1.4;
  color: var(--white);
  margin-bottom: 28px;
  transition-delay: 0.2s;
}

.hero__title em {
  font-style: normal;
  color: var(--gold);
}

.hero__desc {
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.7);
  margin-bottom: 48px;
  transition-delay: 0.3s;
}

.hero .btn {
  transition-delay: 0.4s;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 1;
}

.hero__scroll span {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.5);
}

.hero__scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(201,168,76,0.8), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* =============================================
   INTRO
   ============================================= */
.intro {
  padding: 80px 0;
  background: var(--off-white);
  border-top: 1px solid rgba(201,168,76,0.2);
  border-bottom: 1px solid rgba(201,168,76,0.2);
}

.intro__text {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 300;
  line-height: 2;
  text-align: center;
  color: var(--text);
  letter-spacing: 0.05em;
}

/* =============================================
   SECTION COMMON
   ============================================= */
.section {
  padding: var(--section-py) 0;
}

.section__head {
  text-align: center;
  margin-bottom: 72px;
}

.section__label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 16px;
  position: relative;
}

.section__label::before,
.section__label::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px;
  height: 1px;
  background: var(--gold);
  opacity: 0.5;
}
.section__label::before { right: calc(100% + 12px); }
.section__label::after  { left:  calc(100% + 12px); }

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--navy);
  margin-bottom: 20px;
}

.section__desc {
  font-size: 0.9rem;
  color: var(--text-light);
  letter-spacing: 0.05em;
  line-height: 1.9;
}

/* =============================================
   SERVICE
   ============================================= */
.service {
  background: var(--white);
}

.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--gray-300);
  border: 1px solid var(--gray-300);
}

.service__card {
  background: var(--white);
  padding: 56px 40px;
  transition: background var(--transition);
}

.service__card:hover {
  background: var(--navy);
}

.service__card:hover .service__card-title,
.service__card:hover .service__card-text,
.service__card:hover .service__card-list li {
  color: var(--white);
}

.service__card:hover .service__card-icon svg {
  stroke: var(--gold);
}

.service__card:hover .service__card-list li::before {
  background: var(--gold);
}

.service__card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 32px;
}

.service__card-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--navy);
  transition: stroke var(--transition);
}

.service__card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--navy);
  margin-bottom: 16px;
  transition: color var(--transition);
}

.service__card-text {
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--text-light);
  margin-bottom: 24px;
  transition: color var(--transition);
}

.service__card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service__card-list li {
  font-size: 0.8rem;
  color: var(--text-light);
  padding-left: 16px;
  position: relative;
  transition: color var(--transition);
}

.service__card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  transition: background var(--transition);
}

/* =============================================
   WHY CHOOSE US
   ============================================= */
.why {
  background: var(--navy);
}

.why .section__label {
  color: var(--gold);
}

.why .section__label::before,
.why .section__label::after {
  background: var(--gold);
  opacity: 0.5;
}

.why .section__title {
  color: var(--white);
}

.why .section__desc {
  color: rgba(255,255,255,0.6);
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 64px;
}

.why__card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,168,76,0.15);
  padding: 48px 40px;
  position: relative;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.why__card:hover {
  background: rgba(201,168,76,0.06);
  border-color: rgba(201,168,76,0.4);
}

.why__card-num {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 300;
  color: rgba(201,168,76,0.2);
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: 24px;
}

.why__card-icon {
  width: 40px;
  height: 40px;
  color: var(--gold);
  margin-bottom: 20px;
}

.why__card-icon svg {
  width: 100%;
  height: 100%;
}

.why__card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--white);
  line-height: 1.7;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.why__card-text {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.9;
}

/* =============================================
   FOUNDER
   ============================================= */
.founder {
  background: var(--white);
}

.founder__inner {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 80px;
  align-items: start;
}

/* Photo column */
.founder__photo-wrap {
  position: relative;
  overflow: hidden;
}

.founder__photo-wrap::before {
  content: '';
  position: absolute;
  top: -12px;
  left: -12px;
  right: 12px;
  bottom: 12px;
  border: 1px solid var(--gold);
  opacity: 0.4;
  z-index: 0;
  pointer-events: none;
}

.founder__photo-wrap img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
  filter: grayscale(10%);
}

.founder__credentials {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.founder__cred-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--off-white);
  border-left: 2px solid var(--gold);
}

.founder__cred-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--gold);
  margin-top: 2px;
}

.founder__cred-icon svg {
  width: 100%;
  height: 100%;
}

.founder__cred-item p {
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--navy);
  letter-spacing: 0.03em;
}

.founder__cred-item strong {
  color: var(--gold);
  font-weight: 500;
}

/* Content column */
.section__head--left {
  text-align: left;
}

.section__head--left .section__label {
  justify-content: flex-start;
}

.section__head--left .section__label::before {
  display: none;
}

.founder__name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--navy);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.founder__name span {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gold);
  letter-spacing: 0.15em;
  margin-left: 12px;
}

.founder__role {
  font-size: 0.8rem;
  color: rgba(13,21,38,0.5);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(13,21,38,0.08);
}

.founder__message {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.founder__message p {
  font-size: 0.925rem;
  line-height: 2;
  color: rgba(13,21,38,0.75);
  letter-spacing: 0.04em;
}

/* =============================================
   WORKS
   ============================================= */
.works {
  background: var(--off-white);
}

/* Gallery Grid */
.works__gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--off-white);
  margin-bottom: 80px;
}

.works__item {
  display: block;
  background: var(--white);
  overflow: hidden;
  text-decoration: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.works__item.is-hidden {
  display: none;
}

.works__item-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--gray-100);
}

.works__item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.6s ease;
}

.works__item:hover .works__item-img img {
  transform: scale(1.06);
}

.works__item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 21, 38, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.works__item:hover .works__item-overlay {
  opacity: 1;
}

.works__item-view {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 10px 20px;
}

.works__item-info {
  padding: 24px 28px 28px;
}

.works__item-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 10px;
}

.works__item-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--navy);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.works__item-desc {
  font-size: 0.78rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* Review */
.review {
  margin-top: 0;
}

.review .section__head {
  margin-bottom: 48px;
}

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

.review__card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  padding: 40px;
  position: relative;
}

.review__quote {
  font-family: var(--font-en);
  font-size: 4rem;
  font-weight: 300;
  color: var(--gold);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.review__text {
  font-size: 0.875rem;
  line-height: 2;
  color: var(--text);
  margin-bottom: 20px;
}

.review__author {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gray-500);
}

.review__note {
  text-align: center;
  margin-top: 40px;
  font-size: 0.78rem;
  color: var(--gray-500);
  letter-spacing: 0.05em;
}

/* =============================================
   FAQ
   ============================================= */
.faq {
  background: var(--white);
}

.faq__list {
  max-width: 760px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--gray-300);
}

.faq__item:first-child {
  border-top: 1px solid var(--gray-300);
}

.faq__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-jp);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.03em;
  text-align: left;
  gap: 20px;
  transition: color var(--transition);
}

.faq__question:hover {
  color: var(--gold);
}

.faq__icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--gold);
  flex-shrink: 0;
  transition: transform 0.3s ease;
  line-height: 1;
}

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  display: none;
  padding: 0 0 28px 0;
}

.faq__answer p {
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--text-light);
}

/* =============================================
   CONTACT
   ============================================= */
.contact {
  background: var(--navy);
}

.contact .section__title {
  color: var(--white);
}

.contact .section__desc {
  color: rgba(255,255,255,0.6);
}

.contact__form-wrap {
  max-width: 640px;
  margin: 0 auto;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form__label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
  font-weight: 300;
}

.form__required {
  color: var(--gold);
  margin-left: 4px;
}

.form__input,
.form__textarea {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--white);
  font-family: var(--font-jp);
  font-size: 0.9rem;
  padding: 16px 20px;
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  width: 100%;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: rgba(255,255,255,0.25);
  font-size: 0.85rem;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--gold);
  background: rgba(255,255,255,0.1);
}

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

.form__note {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
  line-height: 1.7;
  margin-top: -8px;
}

.contact .btn--primary {
  margin-top: 8px;
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  padding: 20px;
}

.contact__thanks {
  text-align: center;
  padding: 60px 40px;
  border: 1px solid rgba(201,168,76,0.3);
}

.contact__thanks p {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  line-height: 2;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: #080e1c;
  padding: 48px 0;
  border-top: 1px solid rgba(201,168,76,0.15);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer__logo {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.footer__nav {
  display: flex;
  gap: 32px;
}

.footer__nav a {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: var(--gold);
}

.footer__copy {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.25);
}

/* =============================================
   RESPONSIVE — TABLET
   ============================================= */
@media (max-width: 960px) {
  :root {
    --section-py: 80px;
  }

  .container {
    padding: 0 32px;
  }

  .header__nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

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

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

  .founder__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .founder__photo-wrap {
    max-width: 320px;
    margin: 0 auto;
  }

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

  /* FOUNDER: モバイル用タイトルは表示、PC用は非表示 */
  .founder__head-mobile {
    display: block;
    text-align: center;
    margin-bottom: 32px;
  }
  .founder__content .section__head--left {
    display: none;
  }

  /* 実績スライダー */
  .works__gallery {
    display: flex !important;
    overflow-x: scroll;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 0;
    padding: 0 calc(50% - 140px);
    scrollbar-width: none;
  }
  .works__gallery::-webkit-scrollbar {
    display: none;
  }
  .works__item {
    flex: 0 0 280px;
    width: 280px;
    scroll-snap-align: center;
    opacity: 1 !important;
    transform: none !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
}

/* =============================================
   RESPONSIVE — MOBILE
   ============================================= */
@media (max-width: 640px) {
  :root {
    --section-py: 64px;
  }

  .container {
    padding: 0 24px;
  }

  .header__inner {
    padding: 0 24px;
    height: 64px;
  }

  .header__logo img {
    height: 56px;
  }

  .hero__content {
    padding: 0 24px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .btn {
    padding: 14px 36px;
  }

  .section__head {
    margin-bottom: 48px;
  }

  .section__label::before,
  .section__label::after {
    width: 24px;
  }

  .service__card {
    padding: 40px 28px;
  }

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

  .why__card {
    padding: 36px 28px;
  }

  .works__item-info {
    padding: 18px 20px 22px;
  }

  .review__card {
    padding: 28px 24px;
  }

  .footer__nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }
}