/* ================================================
   AssetRise Corporate Site
   Design System: Quiet Luxury
   ================================================ */

/* ---- Custom Properties ---- */
:root {
  /* Colors */
  --color-black: #1a1a1a;
  --color-dark: #2c2c2c;
  --color-gray-dark: #4a4a4a;
  --color-gray: #8a8a8a;
  --color-gray-light: #c8c8c8;
  --color-gray-pale: #e8e8e8;
  --color-off-white: #f7f6f4;
  --color-white: #ffffff;
  --color-gold: #b8965a;
  --color-gold-light: #d4b57a;
  --color-gold-dark: #96783f;
  --color-navy: #0c1525;
  --color-navy-light: #111d33;

  /* Typography */
  --font-serif: 'Noto Serif JP', 'YuMincho', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --font-display: 'Cormorant Garamond', var(--font-serif);

  /* Spacing */
  --section-padding: clamp(80px, 12vw, 160px);
  --container-width: 1040px;
  --container-padding: clamp(24px, 5vw, 48px);

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-base: 0.4s var(--ease-out);
  --transition-slow: 0.7s var(--ease-out);

  /* Header */
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 400;
  line-height: 2;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

ul {
  list-style: none;
}

address {
  font-style: normal;
}

em {
  font-style: normal;
  color: var(--color-black);
}

::selection {
  background-color: var(--color-gold);
  color: var(--color-white);
}

/* Utility: Responsive breaks */
.sp-only { display: none; }
.pc-only { display: inline; }

@media (max-width: 768px) {
  .sp-only { display: inline; }
  .pc-only { display: none; }
}

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

/* ---- Section Common ---- */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section__label {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section__label-en {
  font-family: var(--font-display);
  font-size: clamp(11px, 1.2vw, 13px);
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
  display: inline-block;
  position: relative;
  padding-bottom: 12px;
}

.section__label-en::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 1px;
  background-color: var(--color-gold);
}


/* ================================================
   HEADER
   ================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: var(--color-navy);
  transition: background-color 0.5s ease, box-shadow 0.5s ease;
}

.header__inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 48px);
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  z-index: 1001;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-white);
  transition: color var(--transition-base);
}

/* Nav */
.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 40px);
}

.header__nav-link {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-white);
  transition: color var(--transition-base);
  position: relative;
  padding: 4px 0;
}

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

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

/* Contact: Outline Button */
.header__nav-link--contact {
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 6px 20px;
  font-size: 12px;
  letter-spacing: 0.15em;
  transition: border-color var(--transition-base), color var(--transition-base);
}

.header__nav-link--contact::after {
  display: none;
}

.header__nav-link--contact:hover {
  border-color: var(--color-gold);
  color: var(--color-gold) !important;
}

/* Header scrolled state */
.header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.header.is-scrolled .header__logo-text {
  color: var(--color-black);
}

.header.is-scrolled .header__nav-link {
  color: var(--color-dark);
}

.header.is-scrolled .header__nav-link--contact {
  border-color: var(--color-dark);
  color: var(--color-dark);
}

.header.is-scrolled .header__nav-link--contact:hover {
  border-color: var(--color-gold);
  color: var(--color-gold) !important;
}

.header.is-scrolled .header__hamburger-line {
  background-color: var(--color-dark);
}

/* Hamburger */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  gap: 6px;
  padding: 0;
}

.header__hamburger-line {
  display: block;
  width: 22px;
  height: 1px;
  background-color: var(--color-white);
  transition: transform 0.4s ease, opacity 0.3s ease, background-color var(--transition-base);
}

.header__hamburger.is-active .header__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__hamburger.is-active .header__hamburger-line:nth-child(2) {
  opacity: 0;
}

.header__hamburger.is-active .header__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* SP Menu */
.sp-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background-color: rgba(26, 26, 26, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  z-index: 999;
}

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

.sp-menu__list {
  text-align: center;
}

.sp-menu__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-white);
  padding: 16px 0;
  transition: color var(--transition-base);
}

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

.sp-menu__link--external {
  font-size: 14px;
  color: var(--color-gray);
  letter-spacing: 0.15em;
}

.sp-menu__link--external:hover {
  color: var(--color-gold);
}

.sp-menu__external-icon {
  opacity: 0.6;
}

.sp-menu__divider {
  width: 24px;
  height: 1px;
  background-color: rgba(255, 255, 255, 0.15);
  margin: 16px auto;
}


/* ================================================
   FIRST VIEW
   ================================================ */
/* ---- FV: 共通レイアウト（ネイビー背景 + 画像全体表示 + テキストエリア） ---- */
.fv {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  background-color: var(--color-navy);
}

.fv__bg {
  position: relative;
  width: 100%;
  flex-shrink: 0;
  margin-top: var(--header-height);
  /* PC: 横長画像をなるべく大きく表示 */
  aspect-ratio: 16 / 9;
  max-height: calc(100vh - var(--header-height) - 180px);
}

.fv__bg-placeholder {
  width: 100%;
  height: 100%;
  background: url('images/fv-hero.jpg') center center / cover no-repeat;
}

.fv__overlay {
  display: none;
}

.fv__content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: clamp(32px, 4vh, 56px) var(--container-padding) clamp(40px, 5vh, 64px);
  max-width: 100%;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--color-navy);
}

.fv__copy {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.2vw, 36px);
  font-weight: 400;
  letter-spacing: 0.15em;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 16px;
}

.fv__company {
  font-family: var(--font-display);
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 300;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.5);
}

/* Scroll indicator */
.fv__scroll-indicator {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.fv__scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ---- FV: SP調整 ---- */
@media (max-width: 768px) {
  .fv__bg {
    aspect-ratio: 16 / 9;
    max-height: none;
  }

  .fv__content {
    padding: clamp(32px, 6vh, 56px) clamp(24px, 6vw, 40px) clamp(48px, 8vh, 72px);
  }

  .fv__copy {
    font-size: clamp(20px, 5.5vw, 26px);
    letter-spacing: 0.12em;
  }

  .fv__company {
    font-size: 12px;
  }

  .fv__scroll-indicator {
    bottom: 16px;
  }
}


/* ================================================
   CONCEPT
   ================================================ */
.concept {
  background-color: var(--color-white);
  overflow: hidden;
}

.concept__title {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.6vw, 26px);
  font-weight: 400;
  line-height: 2;
  letter-spacing: 0.06em;
  color: var(--color-black);
  margin-bottom: clamp(48px, 8vw, 80px);
  position: relative;
}

.concept__body {
  max-width: 720px;
  margin: 0 auto;
}

.concept__text {
  margin-bottom: clamp(28px, 4vw, 40px);
}

.concept__text p {
  font-size: clamp(14px, 1.1vw, 15px);
  line-height: 2.2;
  letter-spacing: 0.04em;
  color: var(--color-gray-dark);
}

.concept__text p + p {
  margin-top: 1.5em;
}

.concept__text em {
  font-weight: 500;
}

.concept__closing {
  font-family: var(--font-serif);
  font-size: clamp(14px, 1.1vw, 15px);
  line-height: 2.2;
  letter-spacing: 0.06em;
  color: var(--color-black);
}

.concept__signature {
  margin-top: clamp(48px, 6vw, 72px);
  text-align: right;
  padding-right: 16px;
}

.concept__signature-title {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--color-gray);
  margin-bottom: 8px;
}

.concept__signature-name {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-black);
}

.concept__decoration {
  position: absolute;
  top: 50%;
  right: -60px;
  transform: translateY(-50%);
  width: 1px;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--color-gold-light), transparent);
  opacity: 0.3;
}


/* ================================================
   BUSINESS
   ================================================ */
.business {
  background-color: var(--color-off-white);
}

.business__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-bottom: clamp(64px, 10vw, 120px);
}

.business__item-inner {
  padding: clamp(32px, 4vw, 48px);
  background-color: var(--color-white);
  height: 100%;
  position: relative;
  transition: box-shadow var(--transition-base);
}

.business__item-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--color-gold), transparent);
  opacity: 0.5;
}

.business__item-inner:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
}

.business__item-number {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  display: block;
  margin-bottom: 24px;
}

.business__item-title {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--color-black);
  margin-bottom: 20px;
}

.business__item-text {
  font-size: clamp(13px, 1vw, 14px);
  line-height: 2.1;
  letter-spacing: 0.03em;
  color: var(--color-gray-dark);
}

/* Related Business */
.related {
  border-top: 1px solid var(--color-gray-pale);
  padding-top: clamp(48px, 6vw, 72px);
}

.related__inner {
  max-width: 720px;
  margin: 0 auto;
}

.related__label {
  margin-bottom: clamp(24px, 3vw, 36px);
}

.related__label-en {
  font-family: var(--font-display);
  font-size: clamp(11px, 1vw, 12px);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray);
}

.related__content {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.related__company {
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-black);
  margin-bottom: 6px;
}

.related__brands {
  font-size: 13px;
  color: var(--color-gray);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.related__desc {
  font-size: clamp(13px, 1vw, 14px);
  line-height: 2;
  color: var(--color-gray-dark);
}

.related__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-dark);
  white-space: nowrap;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-gray-light);
  transition: color var(--transition-base), border-color var(--transition-base);
}

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

.related__link-arrow {
  transition: transform var(--transition-base);
}

.related__link:hover .related__link-arrow {
  transform: translate(2px, -2px);
}


/* ================================================
   COMPANY
   ================================================ */
.company {
  background-color: var(--color-white);
}

.company__table {
  max-width: 640px;
}

.company__dl {
  width: 100%;
}

.company__row {
  display: flex;
  padding: clamp(20px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--color-gray-pale);
}

.company__row:first-child {
  border-top: 1px solid var(--color-gray-pale);
}

.company__dt {
  font-size: clamp(12px, 1vw, 13px);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-gray);
  width: 140px;
  flex-shrink: 0;
  padding-top: 2px;
}

.company__dd {
  font-size: clamp(14px, 1.1vw, 15px);
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--color-dark);
}

.company__link {
  color: var(--color-dark);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.company__link:hover {
  color: var(--color-gold-dark);
  border-color: var(--color-gold);
}


/* ================================================
   CONTACT
   ================================================ */
.contact {
  background-color: var(--color-off-white);
}

.contact__lead {
  font-size: clamp(13px, 1.1vw, 14px);
  line-height: 2.1;
  letter-spacing: 0.04em;
  color: var(--color-gray-dark);
  margin-bottom: clamp(40px, 6vw, 64px);
}

.contact__form {
  max-width: 640px;
}

.form__group {
  margin-bottom: clamp(24px, 3vw, 32px);
}

.form__label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.form__required {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-gold-dark);
  border: 1px solid var(--color-gold);
  padding: 1px 8px;
  line-height: 1.6;
}

.form__optional {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-gray);
  border: 1px solid var(--color-gray-light);
  padding: 1px 8px;
  line-height: 1.6;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--color-dark);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-pale);
  border-radius: 0;
  transition: border-color var(--transition-base);
  -webkit-appearance: none;
  appearance: none;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  border-color: var(--color-gold);
  outline: none;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-gray-light);
}

.form__select-wrapper {
  position: relative;
}

.form__select-wrapper::after {
  content: '';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--color-gray);
  border-bottom: 1px solid var(--color-gray);
  pointer-events: none;
}

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

.form__privacy {
  margin-top: clamp(28px, 4vw, 40px);
  margin-bottom: clamp(32px, 5vw, 48px);
}

.form__checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--color-gray-dark);
}

.form__checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form__checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-gray-light);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.form__checkbox:checked + .form__checkbox-custom {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
}

.form__checkbox:checked + .form__checkbox-custom::after {
  content: '';
  width: 5px;
  height: 9px;
  border-right: 1.5px solid white;
  border-bottom: 1.5px solid white;
  transform: rotate(45deg) translateY(-1px);
}

.form__checkbox:focus-visible + .form__checkbox-custom {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.form__checkbox-text a {
  color: var(--color-gold-dark);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.form__checkbox-text a:hover {
  border-color: var(--color-gold);
}

.form__submit {
  text-align: left;
}

.form__submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  padding: 16px 48px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--color-dark);
  background: none;
  border: 1px solid var(--color-dark);
  cursor: pointer;
  transition: color var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.form__submit-btn:hover {
  color: var(--color-gold-dark);
  border-color: var(--color-gold);
}

.form__submit-btn:active {
  background-color: rgba(184, 150, 90, 0.05);
}


/* ================================================
   FOOTER
   ================================================ */
.footer {
  background-color: var(--color-black);
  padding: clamp(48px, 6vw, 72px) 0 clamp(32px, 4vw, 48px);
}

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

.footer__brand {
  margin-bottom: clamp(32px, 4vw, 48px);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-white);
  display: block;
  margin-bottom: 16px;
}

.footer__address {
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--color-gray);
}

.footer__email {
  color: var(--color-gray);
  transition: color var(--transition-base);
}

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

.footer__nav {
  margin-bottom: clamp(32px, 4vw, 48px);
}

.footer__nav-list {
  display: flex;
  gap: clamp(20px, 3vw, 36px);
}

.footer__nav-link {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--color-gray);
  transition: color var(--transition-base);
}

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

.footer__copyright {
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__copyright small {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.3);
}


/* ================================================
   ANIMATIONS (Fade In)
   ================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

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

.fade-in-up--delay {
  transition-delay: 0.3s;
}


/* ================================================
   RESPONSIVE
   ================================================ */

/* Tablet */
@media (max-width: 900px) {
  .business__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .related__content {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  body {
    font-size: 14px;
  }

  .header__nav {
    display: none;
  }

  .header__hamburger {
    display: flex;
  }

  /* Menu open state: hamburger lines always white */
  .header__hamburger.is-active .header__hamburger-line {
    background-color: var(--color-white);
  }

  /* scrolled時は通常通り白背景 */
  .header.is-scrolled {
    background-color: rgba(255, 255, 255, 0.96);
  }

  /* Concept */
  .concept__title {
    font-size: clamp(17px, 4.5vw, 22px);
    line-height: 2.1;
  }

  /* Company */
  .company__row {
    flex-direction: column;
    gap: 6px;
  }

  .company__dt {
    width: auto;
  }

  /* Form */
  .form__submit {
    text-align: center;
  }

  .form__submit-btn {
    width: 100%;
  }

  /* Footer */
  .footer__nav-list {
    flex-direction: column;
    gap: 12px;
  }
}

/* Small mobile */
@media (max-width: 400px) {
  .fv__copy {
    font-size: 19px;
    letter-spacing: 0.08em;
  }
}


/* ================================================
   SUBPAGE COMMON (privacy, thanks)
   ================================================ */
.subpage {
  padding-top: calc(var(--header-height) + clamp(48px, 8vw, 80px));
  padding-bottom: var(--section-padding);
  min-height: 70vh;
}

.subpage__title {
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-black);
  margin-bottom: clamp(40px, 6vw, 64px);
  position: relative;
  padding-bottom: 20px;
}

.subpage__title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 1px;
  background-color: var(--color-gold);
}

.subpage__body {
  max-width: 720px;
}

.subpage__body h3 {
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-black);
  margin-top: clamp(32px, 4vw, 48px);
  margin-bottom: 16px;
}

.subpage__body p {
  font-size: clamp(13px, 1vw, 14px);
  line-height: 2.1;
  letter-spacing: 0.03em;
  color: var(--color-gray-dark);
  margin-bottom: 16px;
}

/* Thanks page */
.thanks__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thanks__icon svg {
  stroke: var(--color-gold);
}

.thanks__message {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-black);
  margin-bottom: 24px;
}

.thanks__text {
  font-size: clamp(13px, 1.1vw, 14px);
  line-height: 2.1;
  color: var(--color-gray-dark);
  margin-bottom: clamp(40px, 6vw, 56px);
}

.thanks__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-dark);
  border-bottom: 1px solid var(--color-gray-light);
  padding-bottom: 4px;
  transition: color var(--transition-base), border-color var(--transition-base);
}

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

/* Subpage header always has bg */
.subpage-header .header {
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}