/* ============================================================
   MasterON Service LP — style.css
   Based on MasterON DESIGN.md v1.0.0
   ============================================================ */

/* ------------------------------------------------------------
   1. Design Tokens
   ------------------------------------------------------------ */
:root {
  /* Colors */
  --color-black: #050505;
  --color-black-deep: #000000;
  --color-carbon: #111113;
  --color-surface-dark: #171719;
  --color-surface-dark-soft: #202023;
  --color-white: #FFFFFF;
  --color-off-white: #F7F7F6;
  --color-gray-100: #EFEFEF;
  --color-gray-200: #DDDDDD;
  --color-gray-400: #A3A3A3;
  --color-gray-600: #666666;
  --color-gray-800: #252525;
  --color-red: #C8101E;
  --color-red-bright: #E11928;
  --color-red-dark: #940B14;
  --color-red-hover: #A80D18;
  --color-red-soft: #F8E8EA;

  /* CTA・アイコン用オレンジ */
  --color-orange: #F97316;
  --color-orange-bright: #FB8C3C;
  --color-orange-hover: #DD5F0A;
  --color-metal: #B8BCC1;
  --color-reflection: #5E1117;
  --color-success: #2E7D52;
  --color-error: #D12B35;

  /* Typography */
  --font-display: "Shippori Mincho", "Noto Serif JP", "Yu Mincho",
    "Hiragino Mincho ProN", serif;
  --font-body: "Noto Sans JP", "BIZ UDPGothic",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --font-condensed: "Roboto Condensed", "Arial Narrow", var(--font-body);

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Radius */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-round: 50%;

  /* Borders */
  --border-light: 1px solid rgba(0, 0, 0, 0.12);
  --border-light-strong: 1px solid rgba(0, 0, 0, 0.22);
  --border-dark: 1px solid rgba(255, 255, 255, 0.18);
  --border-dark-strong: 1px solid rgba(255, 255, 255, 0.42);
  --border-red: 1px solid rgba(200, 16, 30, 0.8);

  /* Shadows */
  --shadow-photo: 0 18px 44px rgba(0, 0, 0, 0.20);
  --shadow-button: 0 10px 24px rgba(249, 115, 22, 0.28);
  --shadow-sticky: 0 -8px 28px rgba(0, 0, 0, 0.36);
  --shadow-card-dark: 0 16px 40px rgba(0, 0, 0, 0.30);

  /* Motion */
  --ease-standard: cubic-bezier(.2, .7, .2, 1);
  --duration-fast: 180ms;
  --duration-medium: 420ms;
  --duration-slow: 680ms;

  /* Layers */
  --z-base: 0;
  --z-image: 10;
  --z-overlay: 20;
  --z-content: 30;
  --z-header: 100;
  --z-sticky-cta: 200;
  --z-drawer: 500;

  /* Hero Overlay */
  --hero-overlay-mobile:
    linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.58) 0%,
      rgba(0, 0, 0, 0.30) 40%,
      rgba(0, 0, 0, 0.92) 100%
    );
  --hero-overlay-desktop:
    linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.88) 0%,
      rgba(0, 0, 0, 0.68) 42%,
      rgba(0, 0, 0, 0.18) 72%,
      rgba(0, 0, 0, 0.04) 100%
    );
}

/* ------------------------------------------------------------
   2. Reset / Base
   ------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--color-gray-800);
  background: var(--color-white);
}

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

img {
  height: auto;
}

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

h1, h2, h3, p, ul, figure {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 3px solid #FF4A55;
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-red);
  color: var(--color-white);
  font-weight: 700;
  /* フォーカス時のみ表示(サイズに依存しない確実な隠し方) */
  transform: translateY(calc(-100% - 24px));
  transition: transform var(--duration-fast) ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ------------------------------------------------------------
   3. Layout Utilities
   ------------------------------------------------------------ */
.container {
  width: min(100% - 40px, 1120px);
  margin-inline: auto;
}

@media (min-width: 768px) {
  .container {
    width: min(100% - 80px, 1120px);
  }
}

@media (min-width: 1280px) {
  .container {
    width: min(100% - 112px, 1280px);
  }
}

.section {
  padding-block: clamp(64px, 10vw, 112px);
}

.text-red {
  color: var(--color-red-bright);
}

.u-br-pc {
  display: none;
}

@media (min-width: 768px) {
  .u-br-pc {
    display: inline;
  }
}

/* 2カラムの狭い列で中途半端に折り返さないよう、広い画面でだけ効かせる改行 */
.u-br-lg {
  display: none;
}

@media (min-width: 1024px) {
  .u-br-lg {
    display: inline;
  }
}

/* ------------------------------------------------------------
   4. Section Header
   ------------------------------------------------------------ */
.section-header {
  display: grid;
  justify-items: center;
  gap: 8px;
  margin-bottom: 40px;
  text-align: center;
}

.section-eyebrow {
  font-family: var(--font-condensed);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-orange);
}

.section-header--dark .section-eyebrow {
  color: var(--color-orange-bright);
}

.section-title {
  font-family: var(--font-body);
  font-size: clamp(1.5rem, 5.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--color-black);
}

.section-header--dark .section-title {
  color: var(--color-white);
}

/* ------------------------------------------------------------
   5. Buttons
   ------------------------------------------------------------ */
.button-primary,
.button-secondary--dark,
.button-secondary--light {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    background-color var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    transform var(--duration-fast) ease,
    box-shadow var(--duration-fast) ease;
}

.button-primary {
  border: 1px solid var(--color-orange);
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-button);
}

.button-primary:hover {
  background: var(--color-orange-hover);
  border-color: var(--color-orange-hover);
  transform: translateY(-2px);
}

.button-primary:active {
  transform: translateY(0);
}

/* 無効時(同意チェック前など)はホバーでも変化しない */
.button-primary:disabled,
.button-primary[aria-disabled="true"],
.button-secondary--dark:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.button-primary:disabled:hover {
  background: var(--color-orange);
  border-color: var(--color-orange);
  transform: none;
}

.button-secondary--dark:disabled:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(0, 0, 0, 0.16);
  transform: none;
}

.button-secondary--dark {
  border: var(--border-dark-strong);
  background: rgba(0, 0, 0, 0.16);
  color: var(--color-white);
}

.button-secondary--dark:hover {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.button-secondary--light {
  border: var(--border-light-strong);
  background: transparent;
  color: var(--color-black);
}

.icon-arrow {
  flex: 0 0 auto;
}

.button-primary .icon-arrow,
.button-secondary--dark .icon-arrow {
  margin-left: auto;
}

/* ------------------------------------------------------------
   6. Header
   ------------------------------------------------------------ */
.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 16px 20px;
  padding-left: max(20px, env(safe-area-inset-left));
  padding-right: max(20px, env(safe-area-inset-right));
}

.site-header.is-scrolled {
  position: fixed;
  min-height: 60px;
  padding-block: 8px;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

/* --- Brand Logo --- */
.site-logo {
  position: relative;
  z-index: calc(var(--z-drawer) + 1);
  display: flex;
  align-items: center;
  min-height: 44px; /* タップ領域の確保 */
  line-height: 1;
}

/* ファーストビューではヘッダーロゴを非表示、スクロール後に表示 */
.site-header .site-logo {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-medium) ease;
}

.site-header.is-scrolled .site-logo,
body.is-menu-open .site-header .site-logo {
  opacity: 1;
  pointer-events: auto;
}

.site-logo img {
  width: 150px;
  height: auto;
}

@media (min-width: 1024px) {
  .site-logo img {
    width: 200px;
  }
}

/* フッターはスクエアロゴ */
.site-logo--footer img {
  width: 104px;
}

@media (min-width: 1024px) {
  .site-logo--footer img {
    width: 120px;
  }
}

.menu-button {
  position: relative;
  z-index: calc(var(--z-drawer) + 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-button__bars {
  display: grid;
  gap: 6px;
  width: 26px;
}

.menu-button__bars i {
  display: block;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--duration-fast) ease, opacity var(--duration-fast) ease;
}

.menu-button[aria-expanded="true"] .menu-button__bars i:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-button[aria-expanded="true"] .menu-button__bars i:nth-child(2) {
  opacity: 0;
}

.menu-button[aria-expanded="true"] .menu-button__bars i:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --- Nav drawer --- */
.global-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  display: grid;
  align-content: center;
  padding: 40px 28px;
  background: rgba(5, 5, 5, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.global-nav[hidden] {
  display: none;
}

.global-nav__logo {
  display: grid;
  justify-items: center;
  max-width: 480px;
  width: 100%;
  margin: 0 auto 28px;
}

.global-nav__logo img {
  width: clamp(150px, 42vw, 190px);
  height: auto;
}

.global-nav__list {
  display: grid;
  gap: 8px;
  max-width: 480px;
  width: 100%;
  margin-inline: auto;
}

.global-nav__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--color-white);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.global-nav__list a small {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-gray-400);
}

.global-nav__list a.global-nav__cta {
  margin-top: 16px;
  justify-content: center;
  border: 1px solid var(--color-orange);
  border-radius: var(--radius-sm);
  background: var(--color-orange);
}

body.is-menu-open {
  overflow: hidden;
}

/* Header stays above drawer so the close button remains reachable */
body.is-menu-open .site-header {
  position: fixed;
  z-index: calc(var(--z-drawer) + 1);
}

/* ------------------------------------------------------------
   7. Hero
   ------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center; /* コンテンツを上下中央に */
  overflow: hidden;
  background: var(--color-black);
  color: var(--color-white);
}

@supports not (min-height: 100svh) {
  .hero {
    min-height: 100vh;
  }
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: var(--z-image);
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% 45%;
}

/* --- 熱気のゆらぎ:下から波状に歪む複製レイヤー --- */
.hero__heat {
  position: absolute;
  inset: 0;
  z-index: calc(var(--z-image) + 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms linear;
  /* 下側ほど強く、上下端はなじませる */
  -webkit-mask-image: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.35) 45%,
    #000 70%,
    #000 88%,
    transparent 100%
  );
  mask-image: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.35) 45%,
    #000 70%,
    #000 88%,
    transparent 100%
  );
}

/* 下側ほど強く、上下端はなじませる(モバイルの帯表示より優先させる) */
.hero__media .hero__heat {
  -webkit-mask-image: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.35) 45%,
    #000 70%,
    #000 88%,
    transparent 100%
  );
  mask-image: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.35) 45%,
    #000 70%,
    #000 88%,
    transparent 100%
  );
}

/* 発生中だけ歪みフィルタを適用(通常時は計算させない) */
.hero__media.is-heat .hero__heat {
  opacity: 1;
  filter: url(#heat-haze);
}

/* フィルタ定義用のSVGは画面に出さない */
.heat-filter-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .hero__heat {
    display: none;
  }
}

/* モバイルは拡大率を抑え、車と看板が見える帯状表示にする */
@media (max-width: 1023px) {
  .hero__media img {
    height: 62%;
    margin-top: 19svh;
    object-position: 88% 50%;
    /* 上下を黒へなじませる */
    -webkit-mask-image: linear-gradient(
      180deg,
      transparent 0%,
      #000 12%,
      #000 88%,
      transparent 100%
    );
    mask-image: linear-gradient(
      180deg,
      transparent 0%,
      #000 12%,
      #000 88%,
      transparent 100%
    );
  }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--hero-overlay-mobile);
}

/* --- 湯気の演出(車の熱で温められた蒸気 / Canvasパーティクル) --- */
.hero__steam {
  position: absolute;
  inset: 0;
  z-index: calc(var(--z-overlay) + 2);
  width: 100%;
  height: 100%;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .hero__steam {
    display: none;
  }
}

.hero__inner {
  position: relative;
  z-index: var(--z-content);
  padding-block: 110px 90px;
}

/* モバイルは中央揃え・やや上寄せ */
@media (max-width: 1023px) {
  .hero__inner {
    text-align: center;
    /* 全体を上寄せしつつ、CTAまでファーストビューに収める */
    padding-block: 68px 40px;
  }

  /* 縦の間隔を詰めてセット全体を上へ */
  .hero__bar {
    margin-bottom: 18px;
  }

  .hero__logo {
    margin-top: 26px;
  }

  .hero__logo img {
    width: clamp(160px, 42vw, 210px);
  }

  .hero__sub {
    margin-top: 26px;
  }

  .hero__summary {
    margin-top: 12px;
  }

  .hero__cta {
    margin-top: 20px;
    gap: 10px;
  }

  .tesla-banner {
    margin-top: 12px;
  }

  .hero__bar {
    margin-inline: auto;
  }

  .hero__logo img {
    margin-inline: auto;
  }

  .hero__cta {
    margin-inline: auto;
  }
}

.hero__bar {
  width: 34px;
  height: 4px;
  margin-bottom: 24px;
  background: var(--color-red);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 13vw, 6.5rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--color-white);
  text-shadow: 0 4px 32px rgba(0, 0, 0, 0.55);
}

/* 英字キャッチコピー */
.hero-title--en {
  font-family: var(--font-condensed);
  font-size: clamp(3rem, 13vw, 6rem);
  line-height: 1.05;
  letter-spacing: 0.03em;
  /* 指定した位置以外で折り返さない */
  white-space: nowrap;
}

/* 狭い画面では2行を保てるサイズまで縮小 */
@media (max-width: 380px) {
  .hero-title--en {
    font-size: 11.5vw;
  }
}

.hero__logo {
  margin-top: clamp(44px, 7vw, 56px);
}

.hero__logo img {
  width: clamp(180px, 46vw, 240px);
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
}

@media (min-width: 1024px) {
  .hero__logo img {
    width: 280px;
  }
}

.hero__sub {
  margin-top: clamp(44px, 7vw, 56px);
  font-size: clamp(1.25rem, 4.8vw, 1.875rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.5;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.6);
}

.hero__summary {
  margin-top: 16px;
  font-size: clamp(0.8125rem, 3vw, 0.9375rem);
  line-height: 2;
  color: var(--color-gray-100);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

.hero__cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 32px;
  max-width: 480px;
}

@media (min-width: 480px) {
  .hero__cta {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .hero {
    min-height: max(100svh, 720px);
    align-items: center;
  }

  .hero__overlay {
    background: var(--hero-overlay-desktop);
  }

  .hero__media img {
    object-position: 74% 55%;
  }

  .hero__inner {
    width: min(100% - 112px, 1280px);
    padding-block: 140px 96px;
  }

  .hero__cta {
    max-width: 520px;
  }
}

/* ------------------------------------------------------------
   8. Service Section
   ------------------------------------------------------------ */
.service-section {
  background:
    linear-gradient(rgba(5, 5, 5, 0.62), rgba(5, 5, 5, 0.72)),
    url("../images/sections/service-carbon-bg.webp") center / cover no-repeat;
  background-color: var(--color-carbon);
}

/* カーボン背景に合わせたダーク配色 */
.service-section .section-title {
  color: var(--color-white);
}

.service-section .section-eyebrow {
  color: var(--color-orange-bright);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--border-dark);
  border-left: var(--border-dark);
}

@media (min-width: 560px) {
  .service-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.service-item {
  min-height: 164px;
  display: grid;
  /* アイコン位置を行内で揃えるため上寄せ + 行の高さを固定 */
  grid-template-rows: auto auto 1fr;
  justify-items: center;
  align-content: start;
  gap: 12px;
  padding: 28px 16px;
  text-align: center;
  border-right: var(--border-dark);
  border-bottom: var(--border-dark);
}

.service-item__icon {
  display: grid;
  place-items: center;
  width: 92px;
  height: 92px;
  /* アイコンが枠に接しないよう余白を確保 */
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--color-white);
  color: var(--color-orange);
}

.service-item__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-item__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-white);
}

.service-item__copy {
  max-width: 18em;
  margin: 0;
  color: var(--color-gray-400);
  font-size: 13px;
  line-height: 1.7;
}

/* ------------------------------------------------------------
   9. Tesla Support Panel
   ------------------------------------------------------------ */
.feature-panel-dark {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 24px;
  padding: 28px;
  border: var(--border-dark);
  border-radius: var(--radius-md);
  background: var(--color-black);
  color: var(--color-white);
  box-shadow: var(--shadow-card-dark);
}

.tesla-panel {
  margin-top: clamp(40px, 7vw, 64px);
  scroll-margin-top: 88px;
}

.tesla-panel__body {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 20px;
  justify-items: start;
}

/* モバイルは中央揃え */
@media (max-width: 767px) {
  .tesla-panel__body {
    justify-items: center;
    text-align: center;
  }
}

.tesla-panel__title {
  font-size: clamp(1.25rem, 4.6vw, 1.75rem);
  font-weight: 700;
  line-height: 1.4;
}

.tesla-panel__items {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px 8px;
  width: 100%;
}

.tesla-panel__items li {
  display: grid;
  justify-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-align: center;
  line-height: 1.4;
}

.tesla-item__icon {
  width: 60px;
  height: 60px;
  color: var(--color-white);
}

.tesla-item__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.tesla-panel__note {
  font-size: 12px;
  line-height: 1.8;
  color: var(--color-gray-400);
}

.tesla-panel__cta {
  width: 100%;
  max-width: 340px;
}

.tesla-panel__media {
  position: relative;
  z-index: 0;
  margin: 0 -28px -28px;
}

.tesla-panel__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 768px) {
  .tesla-panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    padding: 40px;
  }

  .tesla-panel__slash {
    top: -40%;
    right: 32%;
    height: 180%;
  }

  .tesla-panel__media {
    margin: -40px -40px;
    height: calc(100% + 80px);
  }

  .tesla-panel__items {
    gap: 16px;
  }

  .tesla-panel__items li {
    font-size: 12px;
  }
}

/* ------------------------------------------------------------
   10. About Section
   ------------------------------------------------------------ */
.about-section {
  position: relative;
  overflow: hidden;
  background: var(--color-off-white);
}

/* 背景のエンブレム(セクションより大きく・左寄せ・左を見切らせる/パララックス対象) */
.about-bg {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -7%;
  aspect-ratio: 1400 / 988;
  background: url("../images/brand/masteron-emblem.webp") center / contain no-repeat;
  opacity: 0.09;
  pointer-events: none;
  will-change: transform;
}

.about-section .container {
  position: relative;
  z-index: 1;
}

.about-body {
  display: grid;
  gap: 28px;
}

.about-media img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-photo);
}

/* スクエアロゴ版(黒背景のパネルにロゴを配置) */
.about-media--logo {
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  padding: clamp(24px, 6vw, 48px);
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at 50% 42%, rgba(255, 255, 255, 0.06), transparent 62%),
    var(--color-black);
  box-shadow: var(--shadow-photo);
}

.about-media--logo img {
  width: min(64%, 300px);
  border-radius: 0;
  box-shadow: none;
}

.about-copy {
  display: grid;
  gap: 20px;
  font-size: clamp(0.9375rem, 2vw, 1.0625rem);
  line-height: 2;
}

/* メッセージ見出し(左に赤いラインを置く) */
.about-lead {
  position: relative;
  margin-top: 8px;
  padding-left: 18px;
  font-size: clamp(1.25rem, 4.4vw, 1.875rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--color-black);
  /* 2行になる場合に「ん」だけ残らないよう行幅を揃える */
  text-wrap: balance;
}

.about-lead::before {
  content: "";
  position: absolute;
  top: 0.12em;
  left: 0;
  width: 5px;
  height: calc(100% - 0.24em);
  border-radius: 2px;
  background: var(--color-red);
}

/* 英字の見出しは少し大きく、字間を詰める */
.about-lead--en {
  margin-top: 0;
  font-size: clamp(1.375rem, 5vw, 2.125rem);
  letter-spacing: 0.005em;
}

.about-copy__lead {
  font-size: clamp(1.125rem, 3vw, 1.375rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--color-black);
}

/* 相談を促すメッセージ帯(画面幅いっぱいの黒帯) */
.about-band {
  position: relative;
  z-index: 1;
  overflow: hidden;
  margin-block: clamp(40px, 7vw, 64px);
  padding-block: clamp(18px, 3.2vw, 28px);
  /* SERVICEと同じカーボン地を敷き、暗く落として文字を読みやすくする */
  background:
    linear-gradient(rgba(5, 5, 5, 0.72), rgba(5, 5, 5, 0.80)),
    url("../images/sections/service-carbon-bg.webp") center bottom / cover no-repeat;
  background-color: var(--color-black);
  color: var(--color-white);
  text-align: center;
}

/* 左右の赤い斜めライン(ロゴのスラッシュ意匠に合わせた図形)
   ─ 細いグレーの影を添えて、太い赤を際立たせる */
.about-band::before,
.about-band::after {
  content: "";
  position: absolute;
  top: -12%;
  height: 124%;
  width: clamp(12px, 1.6vw, 22px);
  transform: skewX(-33deg);
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.07) 0 16%,
    transparent 16% 34%,
    var(--color-red) 34% 100%
  );
  pointer-events: none;
}

.about-band::before {
  left: clamp(10px, 3.2vw, 56px);
}

.about-band::after {
  right: clamp(10px, 3.2vw, 56px);
}

/* 狭い画面では文字に重ならないよう、細くして外側に寄せる */
@media (max-width: 599px) {
  .about-band::before,
  .about-band::after {
    width: 9px;
  }

  .about-band::before {
    left: -16px;
  }

  .about-band::after {
    right: -16px;
  }
}

/* 斜めラインより前に文字を置く */
.about-band > .container {
  position: relative;
  z-index: 1;
}

.about-band__title {
  font-family: var(--font-body);
  font-size: clamp(1.125rem, 4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.1em;
  /* 暗い背景でも沈まない明るめのオレンジ */
  color: var(--color-orange-bright);
  /* 字間の分だけ右に寄るのを打ち消す */
  text-indent: 0.1em;
}

.about-band__text {
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: clamp(0.75rem, 2.2vw, 0.9375rem);
  line-height: 1.8;
  letter-spacing: 0.08em;
  text-indent: 0.08em;
}

/* 狭い画面では文節の切れ目で折り返す */
.about-band__text span {
  display: inline-block;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 12px;
  margin-top: clamp(40px, 7vw, 64px);
}

/* 直前に黒帯があるときは余白が二重になるので詰める */
.about-band + .container .feature-list {
  margin-top: 0;
}

.feature-item {
  display: grid;
  grid-template-rows: auto 1fr;
  justify-items: center;
  align-content: start;
  gap: 10px;
  text-align: center;
}

.feature-item__icon {
  display: grid;
  place-items: center;
  width: 84px;
  height: 84px;
  /* アイコンが枠に接しないよう余白を確保 */
  padding: 15px;
  border-radius: var(--radius-lg);
  background: var(--color-carbon);
  color: var(--color-orange);
}

.feature-item__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.feature-item__title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-black);
}

@media (min-width: 768px) {
  .about-body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
  }

  .feature-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .feature-item__title {
    font-size: 14px;
  }
}

/* ------------------------------------------------------------
   11. Contact Section
   ------------------------------------------------------------ */
.contact-section {
  background:
    radial-gradient(circle at 20% 0%, rgba(200, 16, 30, 0.10), transparent 36%),
    linear-gradient(180deg, #111113, #050505);
  color: var(--color-white);
}

/* フォーム(左)+ 店舗情報・電話(右)の2カラム */
.contact-layout {
  display: grid;
  gap: 32px;
  max-width: 1024px;
  margin-inline: auto;
}

.contact-aside {
  display: grid;
  gap: 24px;
  align-content: start;
  justify-items: center;
  text-align: center;
  scroll-margin-top: 88px;
}

/* モバイル:電話はフォームの上、店舗情報(ロゴ・住所・マップ)はフォームの下 */
.contact-aside--phone {
  order: -1;
}

.contact-aside__logo img {
  width: 150px;
  height: auto;
}

.contact-aside__info {
  display: grid;
  gap: 12px;
  font-style: normal;
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-gray-100);
}

.contact-aside__phone {
  display: grid;
  gap: 12px;
  width: 100%;
}

.contact-aside__phone-lead {
  font-size: 13px;
  color: var(--color-gray-400);
  line-height: 1.7;
}

@media (min-width: 1024px) {
  .contact-layout {
    /* 左:電話+店舗情報 右:フォーム */
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    grid-template-areas:
      "phone form"
      "info  form";
    /* フォームの高さは2行目に吸収させ、電話と店舗情報を密着させる */
    grid-template-rows: auto 1fr;
    gap: 32px 48px;
    align-items: start;
    align-content: start;
  }

  .contact-aside--phone {
    grid-area: phone;
    order: 0;
  }

  .contact-aside--info {
    grid-area: info;
  }

  .contact-layout .contact-form {
    grid-area: form;
  }
}

.contact-aside__map {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 20px;
  border: 1px solid var(--color-orange);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-white);
  transition: border-color var(--duration-fast) ease, background-color var(--duration-fast) ease;
}

.contact-aside__map:hover {
  border-color: var(--color-orange-bright);
  background: rgba(249, 115, 22, 0.12);
}

.contact-aside__map-icon svg {
  width: 18px;
  height: 18px;
}

.contact-card {
  display: grid;
  justify-items: center;
  gap: 18px;
  align-items: center;
  min-height: 132px;
  padding: 24px;
  border: var(--border-dark);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.035);
  transition:
    border-color var(--duration-fast) ease,
    background-color var(--duration-fast) ease,
    transform var(--duration-fast) ease;
}

.contact-card:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-2px);
}

.contact-card__icon {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-round);
  background: var(--color-orange);
  color: var(--color-white);
}

.contact-card__icon svg {
  width: 28px;
  height: 28px;
}

/* 支給アイコン(赤丸込みの画像)を使う場合 */
.contact-card__icon--img {
  background: none;
}

.contact-card__icon--img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.contact-card__body {
  display: grid;
  gap: 4px;
}

.contact-card__lead {
  font-size: 12px;
  color: var(--color-gray-400);
  line-height: 1.6;
}

.contact-card__label {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.contact-card__tel {
  font-family: var(--font-condensed);
  font-size: clamp(1.625rem, 7vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

/* 電話番号は画像で表示(クリック発信なし) */
.contact-card__tel img {
  width: min(100%, 260px);
  height: auto;
  margin-inline: auto;
}

/* 非リンクの電話カードはホバー演出なし */
.contact-card--static:hover {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.035);
  transform: none;
}

.contact-card__meta {
  font-size: 12px;
  color: var(--color-gray-400);
  line-height: 1.7;
}

.contact-card__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border-radius: var(--radius-xs);
  background: var(--color-red);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 700;
}

.contact-card__arrow {
  color: var(--color-gray-400);
}

@media (min-width: 768px) {
  .contact-cards {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }
}

/* --- Contact Form --- */
.contact-form {
  display: grid;
  gap: 20px;
  width: 100%;
  padding: 28px 24px;
  border: var(--border-dark);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.035);
  scroll-margin-top: 88px;
}

.contact-form__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.contact-form__lead {
  margin-top: -12px;
  font-size: 13px;
  color: var(--color-gray-400);
  line-height: 1.7;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.form-required,
.form-optional {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  border-radius: var(--radius-xs);
  font-size: 11px;
  font-weight: 700;
  vertical-align: 1px;
}

.form-required {
  background: var(--color-red);
  color: var(--color-white);
}

.form-optional {
  border: var(--border-dark);
  color: var(--color-gray-400);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"],
.contact-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: var(--border-dark-strong);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.35);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 16px; /* iOSのズーム防止 */
  line-height: 1.6;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--color-gray-600);
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline: 3px solid #FF4A55;
  outline-offset: 1px;
}

.contact-form .is-invalid {
  border-color: var(--color-error);
}

.form-error {
  font-size: 12.5px;
  font-weight: 700;
  color: #FF6B73;
}

.form-error::before {
  content: "⚠ ";
}

/* スパム対策のハニーポット(画面には出さない) */
.form-honeypot {
  display: none;
}

.form-agreement {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-gray-400);
}

.form-agreement a {
  color: var(--color-orange-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-consent {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
}

.form-consent input {
  width: 20px;
  height: 20px;
  accent-color: var(--color-orange);
}

.form-status {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.7;
}

.form-status.is-success {
  color: #7FD6A4;
}

.form-status.is-error {
  color: #FF6B73;
}

.form-status:empty {
  display: none;
}

.contact-form__submit {
  width: 100%;
}

@media (min-width: 768px) {
  .contact-form {
    padding: 40px;
  }
}

/* ------------------------------------------------------------
   12. Footer(コピーライトのみ)
   ------------------------------------------------------------ */
.site-footer {
  background: var(--color-black);
  /* 追従バー分の余白 */
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}

.site-footer__copyright {
  margin: 0;
  padding: 24px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  font-family: var(--font-condensed);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--color-gray-600);
}

@media (min-width: 1024px) {
  .site-footer {
    padding-bottom: 0;
  }
}

/* ------------------------------------------------------------
   13. Mobile Sticky Contact Bar
   ------------------------------------------------------------ */
.mobile-contact-bar {
  position: fixed;
  inset: auto 0 0;
  z-index: var(--z-sticky-cta);
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
  background: rgba(5, 5, 5, 0.94);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sticky);
  transform: translateY(0);
  transition: transform var(--duration-medium) var(--ease-standard);
}

.mobile-contact-bar[hidden] {
  display: none;
}

.mobile-contact-bar.is-hidden {
  transform: translateY(110%);
}

.mobile-contact-bar a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.mobile-contact-bar__cta {
  background: var(--color-orange);
  color: var(--color-white);
}

.mobile-contact-bar__cta svg {
  margin-left: 4px;
}

@media (min-width: 1024px) {
  .mobile-contact-bar {
    display: none;
  }
}

/* ------------------------------------------------------------
   13.5 Tesla Floating Banner(右下固定)
   ------------------------------------------------------------ */
.tesla-banner {
  /* ヒーロー内に配置(モバイルはCTAの下に通常フロー) */
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: 16px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-sm);
  background: rgba(5, 5, 5, 0.92);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
  transition:
    border-color var(--duration-fast) ease,
    background-color var(--duration-fast) ease,
    transform var(--duration-fast) ease;
}

.tesla-banner:hover {
  border-color: var(--color-white);
  background: rgba(20, 20, 22, 0.96);
  transform: translateY(-2px);
}

.tesla-banner__icon {
  flex: 0 0 auto;
}

/* --- 赤いネオンが縁を一周する演出 --- */
.tesla-banner__neon,
.tesla-panel__neon {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}

/* テスラパネル側は内容より前面に */
.tesla-panel__neon {
  z-index: 3;
}

.tesla-banner__neon rect,
.tesla-panel__neon rect {
  x: 1px;
  y: 1px;
  width: calc(100% - 2px);
  height: calc(100% - 2px);
  rx: 5px;
  fill: none;
  stroke: #FF2A38;
  stroke-width: 2.5;
  stroke-linecap: round;
  /* pathLength=100 のため周長に依存しない */
  stroke-dasharray: 14 86;
  stroke-dashoffset: 100;
  opacity: 0;
  filter:
    drop-shadow(0 0 3px rgba(255, 42, 56, 0.95))
    drop-shadow(0 0 9px rgba(255, 42, 56, 0.55));
  animation: neon-lap 3s linear infinite;
}

@keyframes neon-lap {
  /* 速い初速で走り出し、さらに加速して2秒で一周 */
  0% {
    stroke-dashoffset: 100;
    opacity: 0;
    /* 初速強め+後半加速のカーブ */
    animation-timing-function: cubic-bezier(0.2, 0.35, 0.6, 0.7);
  }
  14% {
    /* ゆるやかにフェードインしながら走る */
    opacity: 1;
  }
  46% {
    opacity: 1;
  }
  66% {
    /* 一周し終えるのに合わせてフェードアウト */
    stroke-dashoffset: -14;
    opacity: 0;
  }
  100% {
    /* 消灯のまま1秒待機 */
    stroke-dashoffset: -14;
    opacity: 0;
  }
}

/* パネルの角丸(8px)に合わせる ※共通ルールより後に置く */
.tesla-panel__neon rect {
  rx: 8px;
}

@media (prefers-reduced-motion: reduce) {
  .tesla-banner__neon,
  .tesla-panel__neon {
    display: none;
  }
}

@media (min-width: 1024px) {
  .tesla-banner {
    /* デスクトップはヒーロー右下(CTAと同じ高さ)に絶対配置 */
    position: absolute;
    right: 0;
    bottom: 96px;
    margin-top: 0;
    min-height: 52px;
    font-size: 14px;
    padding: 12px 20px;
  }
}

/* ------------------------------------------------------------
   14. Reveal Motion
   ------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 560ms ease,
    transform 680ms var(--ease-standard);
}

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

/* JSが無効な環境では最初から表示する */
.no-js .reveal {
  opacity: 1;
  transform: none;
}

/* ------------------------------------------------------------
   14.5 モバイルの文字サイズ調整(全体的にひと回り大きく)
   ------------------------------------------------------------ */
@media (max-width: 767px) {
  body {
    font-size: 18px;
  }

  .section-eyebrow {
    font-size: 14px;
  }

  .section-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .hero__sub {
    font-size: clamp(1.375rem, 5.2vw, 1.875rem);
  }

  .hero__summary {
    font-size: 17px;
  }

  .button-primary,
  .button-secondary--dark,
  .button-secondary--light {
    font-size: 18px;
  }

  .tesla-banner {
    font-size: 16px;
  }

  .global-nav__list a {
    font-size: 19px;
  }

  .service-item__title {
    font-size: 19px;
  }

  .service-item__copy {
    font-size: 16px;
  }

  .tesla-panel__items li {
    font-size: 15px;
  }

  .tesla-panel__note {
    font-size: 15px;
  }

  .feature-item__title {
    font-size: 17px;
  }

  .contact-card__lead,
  .contact-card__meta {
    font-size: 15px;
  }

  .contact-card__label {
    font-size: 18px;
  }

  .contact-form__lead {
    font-size: 16px;
  }

  .form-field label {
    font-size: 17px;
  }

  .contact-form input[type="text"],
  .contact-form input[type="email"],
  .contact-form input[type="tel"],
  .contact-form textarea {
    font-size: 17px;
  }

  .form-error {
    font-size: 15px;
  }

  .form-agreement {
    font-size: 15px;
  }

  .form-consent {
    font-size: 16px;
  }

  .contact-aside__info {
    font-size: 17px;
  }

  .contact-aside__map {
    font-size: 16px;
  }

  .mobile-contact-bar a {
    font-size: 15px;
  }

  .site-footer__copyright {
    font-size: 13px;
  }
}

/* ------------------------------------------------------------
   15. Reduced Motion
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}