/* ========== RESET & BASE ========== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-black: #413d3a;
  --color-blue: #0e3667;
  --color-bg-light: #f4f7f7;
  --color-cream: #f6f4e5;
  --color-gold: #9c8d3b;
  --color-green: #69b00c;
  --color-green-light: #c8e1a7;
  --font-mincho: 'Shippori Mincho', serif;
  --font-mincho-bold: 'Shippori Mincho', serif;
  --font-sans: 'Tazugane Gothic StdN', 'kozuka-gothic-pr6n', 'Noto Sans JP', sans-serif;
  --font-inter: 'Tazugane Gothic StdN', 'kozuka-gothic-pr6n', 'Inter', sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 65px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-black);
  line-height: 1.8;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== HEADER ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(2px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  height: 65px;
  display: flex;
  align-items: center;
}

.header__inner {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 0 144px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo img {
  width: 148px;
  height: 42px;
}

.header__nav-list {
  display: flex;
  gap: 32px;
}

.header__nav-list a {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
  color: var(--color-black);
  transition: opacity 0.3s;
}

.header__nav-list a:hover {
  opacity: 0.7;
}

/* Hamburger button - hidden on desktop */
.header__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
  z-index: 110;
  padding: 0;
}

.header__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-black);
  position: absolute;
  left: 0;
  transition: transform 0.3s, opacity 0.3s;
}

.header__hamburger span:nth-child(1) { top: 0; }
.header__hamburger span:nth-child(2) { top: 9px; }
.header__hamburger span:nth-child(3) { top: 18px; }

.header__hamburger.is-open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

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

.header__hamburger.is-open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ========== HERO ========== */
.hero {
  position: relative;
  height: clamp(750px, 52vw, 2000px);
  margin-top: 65px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 0 144px;
  display: flex;
  flex-direction: column;
  gap: 50px;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
}

.hero__title-sub {
  font-family: var(--font-mincho);
  font-size: 22px;
  letter-spacing: 1px;
  line-height: 56px;
  color: var(--color-black);
}

.hero__title {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-top: 20px;
}

.hero__title-line {
  font-family: var(--font-mincho);
  font-size: clamp(35px, 2.4vw, 42px);
  letter-spacing: 0.12em;
  line-height: 1.6;
  color: #000;
  font-weight: 400;
}

.hero__logo {
  display: flex;
  justify-content: flex-start;
}

.hero__logo img {
  width: clamp(260px, 18vw, 340px);
  height: auto;
}

.hero__cta {
  display: flex;
}

.hero__cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: clamp(20px, 1.4vw, 24px) clamp(56px, 3.9vw, 68px);
  background: linear-gradient(135deg, #1a2a4a 0%, #2a3f6e 25%, #3a5a9e 50%, #2a3f6e 75%, #1a2a4a 100%);
  border: 1px solid rgba(30, 50, 90, 0.6);
  border-radius: 2px;
  box-shadow: 0 2px 12px rgba(20, 40, 80, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: clamp(24px, 1.67vw, 30px);
  color: #e8e0d0;
  letter-spacing: 3px;
  line-height: 1;
  transition: all 0.3s ease;
  position: relative;
}

.hero__cta-btn::after {
  content: '▶';
  margin-left: 12px;
  font-size: 10px;
  opacity: 0.6;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hero__cta-btn:hover {
  background: linear-gradient(135deg, #223660 0%, #345080 25%, #4a6eb5 50%, #345080 75%, #223660 100%);
  box-shadow: 0 4px 20px rgba(20, 40, 80, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.hero__cta-btn:hover::after {
  transform: translateX(3px);
  opacity: 0.9;
}

@media (min-width: 1920px) {
  .hero {
    height: min(52vw, 1900px);
  }

  .hero__bg {
    object-position: 62% center;
  }

  .hero__content {
    max-width: 1920px;
    padding: 0 clamp(120px, 8vw, 240px);
  }

  .hero__title-sub {
    font-size: 28px;
    line-height: 1.9;
  }

  .hero__title-line {
    font-size: 54px;
  }

  .hero__logo img {
    width: 400px;
  }

  .hero__cta-btn {
    font-size: 32px;
    padding: 26px 76px;
  }
}

/* ========== SECTION TITLES ========== */
.section-title {
  font-family: var(--font-mincho);
  font-size: 35px;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 56px;
  text-align: center;
  color: var(--color-black);
}

.section-title--large {
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 400;
  letter-spacing: 3px;
  line-height: 70px;
  text-align: center;
  color: var(--color-black);
}

.section-title--blue {
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 58.5px;
  text-align: center;
  color: var(--color-blue);
}

.section-heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.section-heading__label {
  font-family: var(--font-mincho);
  font-size: 25px;
  font-weight: 400;
  line-height: 25px;
  letter-spacing: 3px;
  color: rgba(14, 54, 103, 0.5);
}

.section-heading__title {
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 400;
  line-height: 70px;
  letter-spacing: 3px;
  color: var(--color-black);
}

.section-heading--blue .section-heading__title {
  color: var(--color-blue);
}

.section-heading__line {
  width: 120px;
  height: 1.5px;
  background: linear-gradient(90deg, rgba(14, 54, 103, 0) 0%, rgba(14, 54, 103, 0.4) 50%, rgba(14, 54, 103, 0) 100%);
}

.underline-bar {
  width: 590px;
  height: 4px;
  background: var(--color-blue);
  border-radius: 2px;
  margin: 16px auto 0;
}

/* ========== PROBLEM ========== */
.problem {
  background: #fff;
  padding: 80px 0 100px;
}

.problem .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 60px;
}

.problem__header {
  text-align: center;
}

.problem__cards {
  display: flex;
  gap: 32px;
  justify-content: center;
  width: 100%;
}

.problem__card {
  flex: 1;
  max-width: 524px;
  overflow: hidden;
}

.problem__card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.problem__text {
  font-size: 22px;
  line-height: 37.5px;
  text-align: center;
  color: var(--color-black);
}

/* ========== SCROLL ANIMATION ========== */
.scroll-anim {
  height: 350vh;
  position: relative;
  background: #fff;
}

.scroll-anim__sticky {
  position: sticky;
  top: 65px;
  height: calc(100vh - 65px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  z-index: 1;
}

.scroll-anim__canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* ========== SUGGESTION ========== */
.suggestion {
  background: transparent;
  position: relative;
  z-index: 2;
  margin-top: -100vh;
}

.suggestion__divider {
  width: 100%;
  line-height: 0;
  overflow: hidden;
  background: transparent;
}

.suggestion__divider img,
.suggestion__divider svg {
  width: 100%;
  height: 50px;
  display: block;
}

.suggestion__divider--bottom {
  background: #f7f6ef;
}

.suggestion__divider--bottom img,
.suggestion__divider--bottom svg {
  transform: rotate(180deg);
}

.suggestion__body {
  background: #f4f7f7;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 0 0;
  text-align: center;
}

/* Ensure all sections after scroll-anim cover the sticky canvas */
.solution, .satisfaction, .expert, .reviews,
.features, .lineup, .interview, .qa, .service,
.warranty, .campaign, .footer {
  position: relative;
  z-index: 2;
  background-color: #fff;
}

.suggestion__sub {
  font-family: var(--font-mincho);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 1px;
  line-height: 56px;
  color: var(--color-blue);
}

.suggestion__main {
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 400;
  letter-spacing: 3px;
  line-height: 70px;
  color: var(--color-blue);
}

.suggestion__image {
  display: flex;
  justify-content: center;
  width: 738px;
  height: 738px;
  margin-top: 0;
  overflow: hidden;
}

.suggestion__image img {
  width: 777px;
  max-width: none;
  opacity: 1;
  transform: none;
  transition: none;
}

/* ========== SOLUTION ========== */
.solution {
  background: #f7f6ef;
  padding: 100px 20px;
}

.solution__inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 80px;
}

.solution__title {
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 400;
  letter-spacing: 3px;
  line-height: 70px;
  color: var(--color-black);
  text-align: center;
}

.solution__features {
  display: flex;
  flex-direction: column;
  gap: 160px;
  width: 100%;
  padding-top: 20px;
}

.solution__card {
  position: relative;
  height: 360px;
  overflow: visible;
  filter: drop-shadow(4px 4px 8px rgba(0, 0, 0, 0.15));
}

.solution__card-body {
  position: absolute;
  right: 0;
  top: 55px;
  width: 1008px;
  background: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  gap: 20px;
  padding: 0 30px 22px;
  z-index: 1;
}

.solution__card-image {
  position: absolute;
  left: 0;
  top: -34px;
  width: 753px;
  height: 280px;
  background: #fff;
  z-index: 2;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px 12px 17px;
}

.solution__card-image img {
  width: 100%;
  height: 100%;
  object-fit: fill;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.25);
}

.solution__card-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 290px;
  margin-left: auto;
  padding-top: 0;
}

.solution__card-number {
  display: block;
  width: 90px;
  font-family: 'Times New Roman', serif;
  font-weight: 400;
  font-size: 90px;
  line-height: 1;
  color: #ceaf35;
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid #ceaf35;
}

.solution__card-heading {
  font-family: var(--font-mincho);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 3px;
  line-height: 40px;
  color: #0e3667;
}

.solution__card-text {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 26px;
  color: #413d3a;
  width: 100%;
}

.solution__card--reverse .solution__card-image {
  left: 290px;
  top: -48px;
  width: 790px;
  height: 294px;
  padding: 14px 22px;
}

.solution__card--reverse .solution__card-body {
  left: 0;
  right: auto;
}

.solution__card--reverse .solution__card-header {
  width: 261px;
  margin-left: 0;
}

/* ========== SATISFACTION ========== */
.satisfaction {
  background: var(--color-bg-light);
  padding: 100px 0;
}

.satisfaction .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 54px;
  max-width: 1080px;
}

.satisfaction__header {
  text-align: center;
  width: 100%;
  max-width: 1040px;
}

.satisfaction__graph {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: 1040px;
}

.satisfaction__chart {
  width: 370px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-radius: 50%;
}

.satisfaction__chart::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    #122e58 0,
    #1b4a82 80deg,
    #1e5090 133deg,
    #1b4a82 200deg,
    #122e58 270deg,
    #b8d4f0 270deg,
    #9abde0 300deg,
    #b8d4f0 331.2deg,
    rgba(215, 225, 238, 0.18) 331.2deg 360deg
  );
  -webkit-mask:
    radial-gradient(farthest-side, transparent calc(100% - 38px), #000 calc(100% - 37px));
  mask:
    radial-gradient(farthest-side, transparent calc(100% - 38px), #000 calc(100% - 37px));
  filter: drop-shadow(0 20px 40px rgba(12, 30, 56, 0.22));
  --chart-end: 0deg;
  -webkit-mask-image:
    conic-gradient(from 0deg, #000 0 var(--chart-end), transparent var(--chart-end) 360deg),
    radial-gradient(farthest-side, transparent calc(100% - 38px), #000 calc(100% - 37px));
  -webkit-mask-composite: source-in;
  mask-image:
    conic-gradient(from 0deg, #000 0 var(--chart-end), transparent var(--chart-end) 360deg),
    radial-gradient(farthest-side, transparent calc(100% - 38px), #000 calc(100% - 37px));
  mask-composite: intersect;
  transition: none;
}

.satisfaction__chart.is-animated::before {
  animation: chartReveal 1.6s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

@keyframes chartReveal {
  0%   { --chart-end: 0deg; }
  100% { --chart-end: 360deg; }
}

@property --chart-end {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

.satisfaction__chart::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    rgba(255, 255, 255, 0.14) 0,
    rgba(255, 255, 255, 0.06) 90deg,
    rgba(255, 255, 255, 0) 180deg,
    rgba(255, 255, 255, 0.04) 270deg,
    rgba(255, 255, 255, 0.14) 360deg
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 38px), #000 calc(100% - 37px), #000 calc(100% - 1px), transparent 100%);
  mask: radial-gradient(farthest-side, transparent calc(100% - 38px), #000 calc(100% - 37px), #000 calc(100% - 1px), transparent 100%);
  pointer-events: none;
}

.satisfaction__chart-inner {
  position: relative;
  z-index: 2;
  width: calc(100% - 76px);
  aspect-ratio: 1;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(ellipse at 35% 25%, rgba(255, 255, 255, 1) 0%, transparent 65%),
    radial-gradient(ellipse at 65% 75%, rgba(248, 248, 246, 0.9) 0%, transparent 55%),
    linear-gradient(160deg, #ffffff 0%, #f9f9f7 40%, #f4f4f1 100%);
  box-shadow:
    inset 0 0 0 1px rgba(24, 63, 115, 0.06),
    inset 0 2px 8px rgba(255, 255, 255, 0.95),
    0 1px 0 rgba(255, 255, 255, 0.8),
    0 8px 24px rgba(12, 30, 56, 0.10),
    0 24px 48px rgba(12, 30, 56, 0.06);
}

.satisfaction__chart-label {
  font-family: var(--font-mincho);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.14em;
  color: var(--color-blue);
}

.satisfaction__chart-value {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin-top: 4px;
  line-height: 1;
}

.satisfaction__chart-number {
  font-family: var(--font-inter);
  font-size: 112px;
  font-weight: 700;
  letter-spacing: -0.04em;
  background: linear-gradient(170deg, #0e3667 20%, #1a5090 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.satisfaction__chart-percent {
  display: inline-flex;
  align-items: flex-start;
  font-family: var(--font-inter);
  font-size: 64px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-top: 22px;
  background: linear-gradient(170deg, #0e3667 20%, #1a5090 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.satisfaction__chart-percent sup {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0;
  margin-left: 5px;
  line-height: 1;
  background: none;
  -webkit-text-fill-color: #8a8a8a;
}

.satisfaction__chart-meta {
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: #555;
}

.satisfaction__badges {
  display: flex;
  gap: 48px;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
  max-width: 1040px;
}

.satisfaction__badge {
  width: 309px;
  height: 85px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

.satisfaction__badge img {
  width: 298px;
  height: auto;
  transform: translateY(-8px);
}

.satisfaction__footnotes {
  width: 100%;
  max-width: 1040px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.satisfaction__footnotes p {
  font-size: 14px;
  line-height: 20px;
  letter-spacing: 0;
  color: #beb4ad;
  margin: 0;
  width: 662px;
  text-align: left;
  white-space: nowrap;
}

.satisfaction__awards {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
  max-width: 1040px;
  min-height: 95px;
  padding-top: 15px;
  padding-bottom: 15px;
}

.satisfaction__awards img {
  height: 65px;
  width: auto;
}

.satisfaction__awards img[alt="Good Design Award"] {
  width: 182px;
}

.satisfaction__awards img[alt="iF Design Award"] {
  width: 128.3px;
}

.satisfaction__awards img[alt="Red Dot Design Award"] {
  width: 91.67px;
}

.satisfaction__awards img[alt="JIDA Award"] {
  width: 104.17px;
}

.satisfaction__awards img[alt="German Design Award"] {
  width: 107.5px;
}

.satisfaction__awards img[alt="DIA Award"] {
  width: 65px;
}

/* ========== EXPERT ========== */
.expert {
  background: #fafafa;
  padding: 100px 0;
}

.expert .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.expert__cards {
  display: flex;
  gap: 40px;
  justify-content: center;
}

.expert__block {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 10px;
}

.expert__note {
  margin: 0 0 0 auto;
  max-width: 510px;
  text-align: right;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: #7a7a7a;
}

.expert__card {
  width: 510px;
  flex-shrink: 0;
}

.expert__card-title {
  font-family: var(--font-mincho);
  font-size: 35px;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 56px;
  color: var(--color-blue);
  white-space: nowrap;
}

.expert__card-divider {
  width: 100%;
  height: 2px;
  background: var(--color-blue);
  margin: 16px 0;
}

.expert__card-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 25px;
  line-height: 40px;
  color: var(--color-blue);
}

.expert__card-role {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 15px;
  line-height: 24px;
  color: var(--color-blue);
  margin-bottom: 16px;
}

.expert__card-image {
  border-radius: 8px;
  overflow: hidden;
}

.expert__card-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 510 / 288;
  object-fit: cover;
}

.expert__card-video {
  border-radius: 8px;
  /* overflow は内側の .video-poster / .video-embed--youtube に任せる（二重クリップで上下が欠けるのを防ぐ） */
  width: 100%;
}

.expert__card-video video {
  width: 100%;
  height: auto;
  display: block;
}

/* 動画枠・サムネは 16:9（1920×1080 相当）に統一 */
.video-embed--drive {
  --drive-top-crop: 64px;
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
  aspect-ratio: 16 / 9;
  background: #1a1a1a;
}

.video-embed--drive iframe {
  position: absolute;
  left: 0;
  top: calc(-0.5 * var(--drive-top-crop));
  width: 100%;
  height: calc(100% + var(--drive-top-crop));
  border: 0;
}

.qa__video .video-embed--drive {
  max-width: 450px;
  margin: 0 auto;
}

@media (max-width: 600px) {
  .video-embed--drive {
    --drive-top-crop: 52px;
  }
}

.video-embed--youtube {
  position: relative;
  width: 100%;
  height: 0;
  /* 16:9（aspect-ratio より小数丸めで欠けにくい） */
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 8px;
  background: #000;
}

.video-embed--youtube iframe {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.qa__video .video-embed--youtube {
  max-width: 450px;
  margin: 0 auto;
}

/* Video poster (thumbnail + play button) */
.video-poster {
  position: relative;
  cursor: pointer;
}

.video-poster img {
  width: 100%;
  height: auto;
  display: block;
}

.expert__card-video .video-poster,
.qa__video .video-poster {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 8px;
}

.qa__video .video-poster {
  width: 100%;
  border-radius: 4px;
}

.expert__card-video .video-poster img,
.qa__video .video-poster img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.video-poster__play {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 1;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.55);
  cursor: pointer;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-poster__play:hover {
  background: rgba(0, 0, 0, 0.75);
}

.video-poster__play-icon {
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

/* ========== CTA MID (after reviews) ========== */
.cta-mid {
  display: flex;
  justify-content: center;
  padding: 10px 0 0;
}

/* ========== REVIEWS ========== */
.reviews {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 80px;
  padding: 100px 180px;
  background-color: #f0ece4;
  background-image:
    repeating-linear-gradient(
      135deg,
      transparent,
      transparent 10px,
      rgba(200, 190, 170, 0.08) 10px,
      rgba(200, 190, 170, 0.08) 11px
    );
}

.reviews__title {
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 400;
  line-height: 70px;
  letter-spacing: 3px;
  text-align: center;
  color: var(--color-black);
}

.reviews__container {
  width: 100%;
  max-width: 1047px;
  background: #f6f6f6;
  border: 2px solid #837b4b;
  box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.12);
  padding: 60px 20px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.reviews__category {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  width: 100%;
}

.reviews__category-title {
  font-family: var(--font-mincho);
  font-size: 35px;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 56px;
  text-align: center;
  color: var(--color-black);
}

.reviews__item {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 7px 0;
  width: 100%;
  max-width: 801px;
}

.reviews__avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

.reviews__bubble {
  position: relative;
  flex: 1;
  padding: 16px;
}

.reviews__bubble-inner {
  position: relative;
  background: #fff;
  box-shadow: 4px 4px 4px rgba(0, 0, 0, 0.25);
  padding: 24px 28px;
}

.reviews__bubble::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' fill='none' preserveAspectRatio='none'%3E%3Cline x1='0.5' y1='0.5' x2='0.5' y2='30' stroke='%23999' stroke-width='0.5' vector-effect='non-scaling-stroke'/%3E%3Cline x1='0.5' y1='0.5' x2='30' y2='0.5' stroke='%23999' stroke-width='0.5' vector-effect='non-scaling-stroke'/%3E%3Cline x1='99.5' y1='99.5' x2='99.5' y2='70' stroke='%23999' stroke-width='0.5' vector-effect='non-scaling-stroke'/%3E%3Cline x1='99.5' y1='99.5' x2='70' y2='99.5' stroke='%23999' stroke-width='0.5' vector-effect='non-scaling-stroke'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
  z-index: 0;
}

.reviews__bubble p {
  font-size: clamp(14px, 1.25vw, 18px);
  line-height: 1.8;
  letter-spacing: 0.05em;
}

.reviews__note {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.reviews__note p {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 300;
  line-height: 25px;
  letter-spacing: 0;
  color: var(--color-black);
  text-align: right;
}

/* ========== REVIEWS SCENES ========== */
.reviews-scenes {
  position: relative;
  z-index: 2;
  background: #f8f8f8;
  padding: 28px 0 56px;
  overflow: hidden;
}

.reviews-scenes__viewport {
  overflow: hidden;
}

.reviews-scenes__track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: reviews-scenes-scroll 32s linear infinite;
}

.reviews-scenes__item {
  width: 430px;
  flex: 0 0 430px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.1);
}

.reviews-scenes__item img {
  width: 100%;
  height: auto;
}

@keyframes reviews-scenes-scroll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-50% - 12px));
  }
}

/* ========== FEATURES ========== */
.features {
  background: #f8f8f8;
  padding: 100px 0;
}

.features .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.features__overview {
  display: flex;
  justify-content: center;
}

.features__overview img {
  max-width: 540px;
  width: 100%;
}

.features__detail {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  min-height: 365px;
}

.features__detail-image {
  flex-shrink: 0;
  width: 300px;
  height: 300px;
  border-radius: 8px;
  overflow: hidden;
}

.features__detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.features__detail-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 15px;
  justify-content: center;
}

.features__detail-heading {
  font-family: var(--font-mincho);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: 3px;
  line-height: 56px;
  color: #0e3667;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--color-black);
}

.features__detail-text {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 26px;
  letter-spacing: 0.54px;
  color: #000;
  background: #fff;
  padding: 10px;
}

/* ========== LINEUP ========== */
.lineup {
  background: #fff;
  padding: 100px 0;
}

.lineup .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.lineup__overview {
  display: flex;
  justify-content: center;
}

.lineup__overview img {
  max-width: 763px;
  width: 100%;
  height: auto;
}

.lineup__selectors {
  display: flex;
  gap: 48px;
  justify-content: center;
}

.lineup__selector-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.lineup__selector-label {
  font-size: 15px;
  font-weight: 500;
  text-align: center;
}

.lineup__color-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.lineup__dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid #ddd;
  cursor: pointer;
  transition: box-shadow 0.2s, border-color 0.2s, opacity 0.2s;
  flex-shrink: 0;
}

.lineup__dot:hover {
  border-color: #aaa;
}

.lineup__dot--active {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 2px rgba(14, 54, 103, 0.3);
}

.lineup__type-card_sentence {
  width: 100%;
}

.lineup__types {
  display: flex;
  gap: 20px;
  justify-content: center;
  width: 100%;
}

.lineup__type-card {
  flex: 1;
  background: #f4f3f0;
  border-radius: 16px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.lineup__type-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 25px;
  letter-spacing: 0.05em;
  line-height: 40px;
  text-align: center;
  color: var(--color-black);
}

.lineup__type-sub {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 20px;
  line-height: 32px;
  text-align: center;
  color: var(--color-black);
  padding-bottom: 12px;
}

.lineup__material-toggle {
  display: flex;
  border-radius: 8px;
  overflow: hidden;
  border: 1.5px solid var(--color-black);
  margin: 4px 0 8px;
}

.lineup__material-btn {
  flex: 1;
  padding: 6px 20px;
  font-size: 15px;
  font-family: var(--font-sans);
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
  background: #fff;
  color: var(--color-black);
  line-height: 1.6;
  letter-spacing: 0.04em;
}

.lineup__material-btn--active {
  background: var(--color-black);
  color: #fff;
}

.lineup__material-btn:not(.lineup__material-btn--active):hover {
  background: #f0efed;
}

.lineup__material-toggle--single {
  pointer-events: none;
}

.lineup__material-toggle--single .lineup__material-btn {
  cursor: default;
}

.lineup__type-divider {
  width: 100%;
  height: 1px;
  background: var(--color-black);
}

.lineup__type-desc {
  font-size: 20px;
  line-height: 30px;
  letter-spacing: -0.4px;
  color: var(--color-black);
  padding-top: 12px;
}

.lineup__type-note {
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  margin-top: 8px;
  color: #888;
}

.lineup__type-image {
  display: flex;
  justify-content: center;
  padding-top: 20px;
  align-items: flex-end;
  margin-top: auto;
}

.lineup__type-image img {
  width: 250px;
  height: 250px;
  object-fit: contain;
  transition: opacity 0.3s ease;
}

.lineup__type-image img.is-loading {
  opacity: 0.4;
}

/* ========== INTERVIEW ========== */
.interview {
  background: #fff;
  padding: 100px 0;
}

.interview .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 35px;
  max-width: 1080px;
}

.interview__header {
  text-align: center;
  width: 100%;
  max-width: 1040px;
}

.interview__top {
  display: flex;
  justify-content: flex-start;
  gap: 0;
  align-items: flex-start;
  position: relative;
  width: 1040px;
  min-height: 360px;
  padding: 10px 0;
}

.interview__developer {
  flex-shrink: 0;
  width: 434px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.interview__developer-image {
  width: 426px;
  height: 250px;
  overflow: hidden;
}

.interview__developer-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.interview__developer-role {
  width: 100%;
  padding: 0 14px;
  font-family: 'Noto Sans JP', var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  line-height: 20px;
  letter-spacing: 0;
  color: var(--color-black);
  text-align: left;
  word-break: keep-all;
}

.interview__developer-name {
  width: 100%;
  padding: 0 14px;
  font-family: 'Noto Sans JP', var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
  letter-spacing: 0;
  color: #000;
}

.interview__quote {
  position: absolute;
  left: 444px;
  top: 10px;
  bottom: 10px;
  right: 0;
  padding-left: 20px;
  padding-right: 10px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 20px;
  line-height: 36px;
  letter-spacing: 0;
  color: var(--color-black);
  overflow-y: auto;
}

.interview__factory {
  width: 426px;
  height: 460px;
  margin-top: 20px;
  overflow: hidden;
}

.interview__factory img {
  width: 100%;
  height: 168%;
  object-fit: cover;
  object-position: center 16%;
}

/* SP版: デフォルト非表示 */
.interview__image-sp {
  display: none;
}

.interview__quote p {
  margin: 0;
}

.interview__quote p + p {
  margin-top: 36px;
}

/* ========== Q&A ========== */
.qa {
  background: #f0ede8;
  padding: 100px 0;
}

.qa .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.qa__header {
  text-align: center;
}

.qa__list {
  max-width: 850px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.qa__item {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.qa__question {
  width: 100%;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 24px 18px;
  border: none;
  background: none;
  cursor: pointer;
  text-align: left;
}

.qa__q-text {
  flex: 1;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--color-blue);
}

.qa__toggle {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
}

.qa__toggle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 10px solid var(--color-blue);
  transition: transform 0.3s;
}

.qa__item.is-open .qa__toggle::before {
  transform: translate(-50%, -50%) rotate(180deg);
}

.qa__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.qa__answer-divider {
  width: calc(100% - 36px);
  height: 1px;
  background: #ddd;
  margin: 0 18px;
}

.qa__answer p {
  padding: 16px 18px 24px;
  font-size: 16px;
  line-height: 28px;
  letter-spacing: 0.08em;
  color: var(--color-black);
}

.qa__thumbnail {
  display: flex;
  justify-content: center;
  padding: 0 18px 18px;
}

.qa__thumbnail img {
  width: 450px;
  height: 276px;
  object-fit: cover;
  display: block;
}

.qa__video {
  display: block;
  width: 100%;
  padding: 0 18px 32px;
  max-width: 450px;
  margin: 0 auto;
  box-sizing: border-box;
}

.qa__video video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.qa__video .video-embed--drive,
.qa__video .video-embed--youtube {
  border-radius: 4px;
}

.qa__a-marker {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 20px;
  color: #e494c0;
  margin-right: 4px;
}

/* ========== SERVICE ========== */
.service {
  background: var(--color-bg-light);
  padding: 100px 0;
}

.service .service__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.service__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.service__heading {
  margin-bottom: 0;
}

.service__card,
.warranty__card {
  width: 100%;
  background: #fff;
  border-radius: 16px;
  box-shadow: 2px 4px 10px rgba(0, 0, 0, 0.1);
  padding: 30px 10px;
}

.service__subtitle {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 25px;
  line-height: 36px;
  letter-spacing: 0.75px;
  color: var(--color-black);
  text-align: center;
  width: 100%;
  padding-bottom: 8px;
}

.service__title {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 35px;
  line-height: 38px;
  letter-spacing: 1.05px;
  color: var(--color-black);
  text-align: center;
  width: 100%;
}

.service__content {
  display: flex;
  width: 100%;
  max-width: 1040px;
  height: 500px;
  gap: 30px;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.service__image {
  flex-shrink: 0;
  width: 450px;
  height: 276px;
}

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

.service__text-area {
  width: 505px;
  height: 422px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}

.service__appeal {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 35px;
  line-height: 38px;
  letter-spacing: 1.05px;
  color: var(--color-blue);
  padding-top: 12px;
}

.service__points {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 307px;
  gap: 16px;
  padding-top: 16px;
}

.service__point {
  display: flex;
  gap: 12px;
  align-items: center;
  width: 100%;
  min-height: 48px;
}

.service__point-num {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: #9ac8ff;
  border-radius: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-inter);
  font-weight: 700;
  font-size: 24px;
  line-height: 48px;
  color: #fff;
}

.service__point p {
  font-family: 'Noto Sans JP', var(--font-sans);
  font-weight: 700;
  font-size: 24px;
  line-height: 48px;
  letter-spacing: 0;
  color: var(--color-black);
  white-space: nowrap;
}

.service__point-divider {
  width: 100%;
  height: 1px;
  background: #d9d9d9;
}

.service__desc {
  font-size: 20px;
  font-weight: 500;
  line-height: 36px;
  letter-spacing: 0;
  color: var(--color-black);
  width: 1001px;
  padding: 0;
  margin: 0 auto;
}

.service__accent {
  color: #E7A636;
}

.highlight-green {
  background: linear-gradient(to bottom, transparent 60%, var(--color-green-light) 60%);
}

/* ========== WARRANTY ========== */
.warranty__inner {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.warranty__subtitle {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 25px;
  line-height: 36px;
  letter-spacing: 0.75px;
  color: var(--color-black);
  text-align: center;
  padding-top: 17px;
  padding-bottom: 8px;
}

.warranty__title {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 35px;
  line-height: 38px;
  letter-spacing: 1.05px;
  color: var(--color-black);
  text-align: center;
  margin-bottom: 0;
  padding-bottom: 20px;
}

.warranty__content {
  display: flex;
  width: 100%;
  max-width: 1000px;
  height: 306px;
  gap: 30px;
  align-items: center;
  justify-content: center;
}

.warranty__image {
  flex-shrink: 0;
  width: 450px;
  height: 304px;
  overflow: hidden;
  position: relative;
}

.warranty__image img {
  position: absolute;
  top: -2.91%;
  left: -13%;
  width: 120.8%;
  height: 118.74%;
  max-width: none;
  object-fit: cover;
}

.warranty__text-area {
  width: 506px;
  height: 276px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
}

.warranty__desc {
  font-size: 20px;
  font-weight: 500;
  line-height: 36px;
  letter-spacing: 0;
  color: var(--color-black);
  width: 484px;
  margin-top: 0;
}

.warranty__note {
  font-size: 16px;
  line-height: 30px;
  letter-spacing: 0;
  color: var(--color-black);
  width: 484px;
  margin-top: 8px;
}

.warranty__accent {
  color: #E7A636;
}

/* ========== CAMPAIGN ========== */
.campaign {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
  min-height: 739px;
}

.campaign__bg {
  position: absolute;
  top: -66.75%;
  left: -0.71%;
  width: 119.31%;
  height: 174.23%;
  max-width: none;
  object-fit: cover;
  z-index: 0;
}

.campaign::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 0;
}

.campaign .container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
  max-width: 1080px;
  padding: 0 20px;
  filter: drop-shadow(0 0 12px rgba(0, 0, 0, 0.6));
}

.campaign__main-title {
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: 45px;
  line-height: 70px;
  letter-spacing: 3px;
  text-align: center;
  color: #f4f7f7;
}

.campaign__title-large {
  font-size: 60px;
  font-weight: 700;
}

.campaign__desc {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 45px;
  line-height: 65px;
  letter-spacing: 1.35px;
  text-align: center;
  color: #f4f7f7;
}

.campaign__coupon {
  text-shadow: none;
}

.campaign__coupon-bar {
  background: #ceaf35;
  border-radius: 8px;
  padding: 16px 48px;
  font-family: var(--font-inter);
  font-weight: 700;
  font-size: 35px;
  line-height: 56px;
  letter-spacing: 2.8px;
  color: #fff;
  text-align: center;
}

.campaign__period {
  display: flex;
  align-items: baseline;
  justify-content: center;
  color: #f4f7f7;
}

.campaign__date {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.campaign__date-num {
  font-family: var(--font-inter);
  font-weight: 500;
  font-size: 56px;
  line-height: 89.6px;
  color: #f4f7f7;
}

.campaign__date-day {
  font-family: var(--font-inter);
  font-weight: 500;
  font-size: 31px;
  line-height: 49.6px;
  color: #f4f7f7;
}

.campaign__separator {
  display: inline-flex;
  align-items: flex-end;
  justify-content: center;
  width: 32px;
  font-size: 32px;
  line-height: 51.2px;
  color: #f4f7f7;
}

.campaign__cta {
  text-shadow: none;
}


.fixed-purchase-btn {
  position: fixed;
  top: 50%;
  right: 0;
  bottom: auto;
  transform: translateY(-50%);
  z-index: 120;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 66px;
  min-height: 255px;
  padding: 12px 8px;
  background: linear-gradient(160deg, #1a2a4a 0%, #2e4a7a 45%, #1a2a4a 100%);
  border: 1px solid rgba(30, 50, 90, 0.6);
  border-right: none;
  border-radius: 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: 18px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: #e8e0d0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
}


.fixed-purchase-btn.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.fixed-purchase-btn:hover {
  transform: translateY(calc(-50% - 1px));
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

/* ========== FOOTER ========== */
.footer {
  background: #999;
  padding: 47px 0 48px;
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 11px;
}

.footer__title {
  line-height: 0;
}

.footer__title img {
  height: auto;
  max-width: 250px;
  color: #fff;
  text-align: center;
}

.footer__copyright {
  font-family: var(--font-inter);
  font-weight: 700;
  font-size: 13px;
  line-height: 19.5px;
  letter-spacing: 0.65px;
  color: #fff;
  text-align: center;
}

/* ========== ANIMATIONS ========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========== RESPONSIVE (tablet) ========== */
@media (max-width: 1024px) {
  .header__inner {
    padding: 0 24px;
  }

  .header__nav-list {
    gap: 16px;
  }

  .header__nav-list a {
    font-size: 13px;
  }

  .hero__content {
    padding: 0 40px;
    gap: 30px;
  }

  .hero__title-line {
    font-size: 32px;
  }

  .hero__logo img {
    width: 240px;
    height: auto;
  }

  .hero__cta-btn {
    font-size: 22px;
    line-height: 48px;
  }

  .section-title {
    font-size: 26px;
    line-height: 42px;
  }

  .section-title--large {
    font-size: 32px;
    line-height: 46px;
  }

  .section-title--blue {
    font-size: 32px;
    line-height: 46px;
  }

  .section-heading__label {
    font-size: 20px;
    line-height: 20px;
    letter-spacing: 2px;
  }

  .section-heading__title {
    font-size: 32px;
    line-height: 46px;
    letter-spacing: 2px;
  }

  .solution__card {
    height: auto;
  }

  .solution__card-image {
    position: relative;
    top: 0;
    width: 100%;
    height: 200px;
    left: 0;
    padding: 12px 17px;
  }

  .solution__card-body {
    position: relative;
    top: 0;
    width: 100%;
    height: auto;
    left: 0;
    right: auto;
    padding: 24px 20px;
  }

  .solution__card--reverse .solution__card-image {
    top: 0;
    left: 0;
    width: 100%;
    height: 200px;
    padding: 12px 17px;
  }

  .solution__card--reverse .solution__card-body {
    left: 0;
  }

  .solution__card-header,
  .solution__card--reverse .solution__card-header {
    width: 100%;
    margin-left: 0;
  }

  .solution__card-number {
    font-size: 60px;
  }

  .solution__card-heading {
    font-size: 24px;
    line-height: 34px;
  }

  .solution__features {
    gap: 80px;
  }

  .solution__title {
    font-size: 32px;
    line-height: 50px;
  }

  .expert__cards {
    flex-direction: column;
    align-items: center;
  }

  .expert__card-title {
    white-space: normal;
    font-size: 28px;
  }

  .reviews {
    padding: 60px 20px;
  }

  .reviews__item {
    gap: 16px;
  }

  .features__detail {
    flex-direction: column;
  }

  .features__detail-content {
    padding-left: 0;
  }

  .features__detail-heading {
    font-size: 24px;
    line-height: 38px;
  }

  .lineup__types {
    flex-direction: column;
    align-items: center;
  }

  .lineup__type-card {
    max-width: 400px;
    width: 100%;
  }

  .lineup__type-desc {
    font-size: 16px;
    line-height: 26px;
  }

  .interview__top {
    flex-direction: column;
    gap: 24px;
    width: 100%;
    position: static;
  }

  .interview__developer--pc {
    display: none;
  }

  .interview__image-sp {
    display: flex;
    gap: 10px;
    align-items: stretch;
    width: 100%;
  }

  .interview__image-sp-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .interview__image-sp-photo {
    width: 100%;
    overflow: hidden;
  }

  .interview__image-sp-photo img {
    width: 100%;
    height: auto;
    display: block;
  }

  .interview__image-sp-role {
    font-family: 'Noto Sans JP', var(--font-sans);
    font-weight: 700;
    font-size: 12px;
    line-height: 20px;
    color: var(--color-black);
    padding: 4px 10px 0;
    margin: 0;
    text-align: left;
    word-break: keep-all;
  }

  .interview__image-sp-name {
    font-family: 'Noto Sans JP', var(--font-sans);
    font-weight: 700;
    font-size: 16px;
    line-height: 1;
    color: #000;
    padding: 2px 10px 0;
    margin: 0;
  }

  .interview__image-sp-right {
    flex: 1;
    overflow: hidden;
    position: relative;
  }

  .interview__image-sp-right img {
    position: absolute;
    top: -22%;
    left: 0;
    width: 100%;
    height: 207%;
    object-fit: cover;
  }

  .interview__quote {
    position: static;
    width: 100%;
    max-width: 100%;
    max-height: 400px;
    margin-left: 0;
    padding-left: 0;
    padding-right: 0;
    overflow-y: auto;
  }

  .service {
    padding: 40px 20px;
  }

  .service__card,
  .warranty__card {
    padding: 24px 16px;
  }

  .service__content {
    flex-direction: column;
    width: 100%;
    height: auto;
    gap: 24px;
  }

  .service__image {
    width: 100%;
    max-width: 450px;
    height: auto;
  }

  .service__appeal {
    font-size: 24px;
    line-height: 36px;
  }

  .service__text-area {
    width: 100%;
    height: auto;
  }

  .service__points {
    width: 100%;
    height: auto;
    gap: 12px;
  }

  .service__point p {
    white-space: normal;
  }

  .service__point-divider {
    width: 100%;
  }

  .service__point p {
    font-size: 20px;
    line-height: 32px;
  }

  .service__desc {
    width: 100%;
    font-size: 16px;
    line-height: 28px;
  }

  .warranty {
    padding: 40px 20px;
  }

  .warranty__content {
    flex-direction: column;
    width: 100%;
    height: auto;
    gap: 24px;
  }

  .warranty__image {
    width: 100%;
    max-width: 450px;
    height: auto;
    aspect-ratio: 450 / 304;
  }

  .warranty__desc {
    width: 100%;
    font-size: 16px;
    line-height: 28px;
    margin-top: 0;
  }

  .warranty__text-area {
    width: 100%;
    height: auto;
  }

  .warranty__note {
    width: 100%;
  }

  .campaign__main-title {
    font-size: 32px;
    line-height: 1.3;
  }

  .campaign__title-large {
    font-size: 40px;
  }

  .campaign__desc {
    font-size: 28px;
    line-height: 42px;
  }

  .campaign__coupon-bar {
    font-size: 24px;
    line-height: 40px;
    padding: 12px 24px;
  }

  .campaign__date-num {
    font-size: 40px;
    line-height: 60px;
  }

  .campaign__date-day {
    font-size: 22px;
    line-height: 36px;
  }

}

/* ========== RESPONSIVE (mobile) ========== */
@media (max-width: 768px) {
  .header {
    height: 56px;
  }

  .header__hamburger {
    display: block;
  }

  .header__nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    z-index: 99;
  }

  .header__nav.is-open {
    max-height: 300px;
    padding: 16px 0;
  }

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

  .header__nav-list li {
    border-bottom: 1px solid #eee;
  }

  .header__nav-list li:last-child {
    border-bottom: none;
  }

  .header__nav-list a {
    display: block;
    padding: 16px 24px;
    font-size: 15px;
  }

  html {
    scroll-padding-top: 56px;
  }

  .hero {
    height: auto;
    min-height: 560px;
    margin-top: 56px;
  }

  .hero__bg {
    object-fit: cover;
    object-position: 68% center;
  }

  .hero__content {
    max-width: 230px;
    margin: 0;
    padding: 28px 16px 28px;
    gap: 18px;
  }

  .hero__title-sub {
    font-size: 12px;
    line-height: 1.8;
    letter-spacing: 0.03em;
  }

  .hero__title {
    gap: 8px;
    padding-top: 10px;
  }

  .hero__title-line {
    font-size: 19px;
    line-height: 1.45;
    letter-spacing: 0.05em;
    font-weight: 500;
  }

  .hero__logo img {
    width: 132px;
    height: auto;
  }

  .hero__cta-btn {
    font-size: 15px;
    line-height: 38px;
    padding: 0 18px;
    letter-spacing: 1px;
  }

  .container {
    padding: 0 16px;
  }

  .underline-bar {
    width: 100%;
    max-width: 300px;
  }

  .problem {
    padding: 50px 0 60px;
  }

  .problem .container {
    gap: 30px;
  }

  .problem__cards {
    flex-direction: column;
    gap: 16px;
  }

  .problem__text {
    font-size: 16px;
    line-height: 28px;
  }

  .section-title {
    font-size: 22px;
    line-height: 34px;
  }

  .section-title--large {
    font-size: 20px;
    line-height: 32px;
  }

  .section-title--blue {
    font-size: 20px;
    line-height: 32px;
  }

  .section-heading {
    gap: 8px;
  }

  .section-heading__label {
    font-size: 16px;
    line-height: 16px;
    letter-spacing: 1px;
  }

  .section-heading__title {
    font-size: 20px;
    line-height: 32px;
    letter-spacing: 1px;
  }

  .scroll-anim {
    height: 280vh;
  }

  .scroll-anim__sticky {
    top: 56px;
    height: calc(100vh - 56px);
  }

  .suggestion {
    margin-top: -85vh;
  }

  .suggestion__body {
    padding: 20px 16px 0;
  }

  .suggestion__sub {
    font-size: 15px;
    line-height: 26px;
    letter-spacing: 0.5px;
  }

  .suggestion__divider img,
  .suggestion__divider svg {
    height: 30px;
  }

  .suggestion__main {
    font-size: 24px;
    line-height: 36px;
    letter-spacing: 1px;
  }

  .suggestion__image {
    width: 100%;
    height: auto;
  }

  .suggestion__image img {
    width: 100%;
    max-width: 738px;
  }

  .solution {
    padding: 60px 16px;
  }

  .solution__inner {
    gap: 40px;
  }

  .solution__title {
    font-size: 22px;
    line-height: 36px;
    letter-spacing: 1px;
  }

  .solution__features {
    gap: 50px;
  }

  .solution__card-image,
  .solution__card--reverse .solution__card-image {
    height: auto;
    position: static;
    padding: 20px 12px 8px;
  }

  .solution__card-image img {
    height: auto;
    object-fit: contain;
  }

  .solution__card-body,
  .solution__card--reverse .solution__card-body {
    position: static;
    padding: 16px 16px;
    gap: 14px;
  }

  .solution__card-number {
    font-size: 48px;
    width: 54px;
  }

  .solution__card-heading {
    font-size: 20px;
    line-height: 30px;
  }

  .solution__card-header,
  .solution__card--reverse .solution__card-header {
    width: 100%;
    margin-left: 0;
    gap: 6px;
  }

  .satisfaction {
    padding: 60px 0;
  }

  .satisfaction .container {
    gap: 30px;
  }

  .satisfaction__chart {
    width: 230px;
  }

  .satisfaction__chart-inner {
    width: calc(100% - 56px);
  }

  .satisfaction__chart-label {
    font-size: 22px;
  }

  .satisfaction__chart-number {
    font-size: 72px;
  }

  .satisfaction__chart-percent {
    font-size: 42px;
    margin-top: 18px;
  }

  .satisfaction__chart-percent sup {
    font-size: 14px;
    margin-left: 4px;
  }

  .satisfaction__chart-meta {
    margin-top: 6px;
    font-size: 14px;
    line-height: 1.5;
  }

  .satisfaction__badges {
    flex-direction: row;
    align-items: flex-start;
    gap: 10px;
    justify-content: center;
    flex-wrap: nowrap;
  }

  .satisfaction__badge {
    width: calc(50% - 5px);
    max-width: 150px;
    height: auto;
  }

  .satisfaction__badge img {
    width: 100%;
    max-width: none;
    transform: none;
  }

  .satisfaction__footnotes p {
    font-size: 11px;
    text-align: left;
    width: 100%;
    white-space: normal;
    line-height: 1.7;
  }

  .satisfaction__awards {
    gap: 12px;
  }

  .satisfaction__awards img {
    height: 40px;
    width: auto !important;
  }

  .expert {
    padding: 60px 0;
  }

  .expert__card {
    width: 100%;
  }

  .expert__card-title {
    font-size: 22px;
    line-height: 34px;
  }

  .expert__card-name {
    font-size: 20px;
  }

  .reviews {
    padding: 40px 16px;
    gap: 30px;
  }

  .reviews__container {
    padding: 30px 12px;
    gap: 30px;
  }

  .reviews__title {
    font-size: 24px;
    line-height: 36px;
    letter-spacing: 1px;
  }

  .reviews__category-title {
    font-size: 24px;
    line-height: 36px;
  }

  .reviews__avatar {
    width: 112px;
    height: 112px;
  }

  .reviews__bubble {
    padding: 14px;
  }

  .reviews__bubble::before {
    display: block;
  }

  .reviews__bubble-inner {
    padding: 18px 18px 18px 20px;
  }

  .reviews__bubble p {
    text-align: left;
  }

  .reviews__item {
    flex-direction: row;
    align-items: center;
    text-align: left;
  }

  .reviews__note {
    align-items: center;
  }

  .reviews__note p {
    font-size: 13px;
    line-height: 22px;
    text-align: center;
  }

  .reviews-scenes {
    padding: 20px 0 40px;
  }

  .reviews-scenes__track {
    gap: 16px;
    animation-duration: 24s;
  }

  .reviews-scenes__item {
    width: 78vw;
    flex: 0 0 78vw;
  }

  .features {
    padding: 60px 0;
  }

  .features__detail-image {
    width: 190px;
    height: auto;
    aspect-ratio: auto;
    margin-bottom: 10px;
  }

  .features__detail {
    gap: 16px;
  }

  .features__detail-heading {
    font-size: 20px;
    line-height: 32px;
  }

  .lineup {
    padding: 60px 0;
  }

  .lineup__selectors {
    flex-direction: column;
    gap: 20px;
    width: 100%;
  }

  .lineup__selector-group {
    width: 100%;
  }

  .lineup__types {
    flex-direction: row;
    align-items: stretch;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    justify-content: flex-start;
    scroll-snap-type: x proximity;
    padding-bottom: 4px;
    padding-inline: 16px;
  }

  .lineup__type-card {
    min-width: 255px;
    max-width: none;
    flex: 0 0 255px;
    padding: 24px 16px;
    gap: 8px;
    scroll-snap-align: start;
  }

  .lineup__type-name {
    font-size: 18px;
    line-height: 1.5;
    letter-spacing: 0.03em;
  }

  .lineup__type-sub {
    font-size: 13px;
    line-height: 1.6;
    padding-bottom: 8px;
  }

  .lineup__material-toggle {
    margin: 2px 0 6px;
  }

  .lineup__material-btn {
    padding: 4px 14px;
    font-size: 12px;
  }

  .lineup__type-desc {
    font-size: 14px;
    line-height: 1.8;
    letter-spacing: 0;
  }

  .lineup__type-note {
    font-size: 11px;
    margin-top: 4px;
  }

  .lineup__type-image img {
    width: 150px;
    height: 150px;
  }

  .lineup__type-image {
    padding-top: 8px;
    min-height: auto;
  }

  .lineup__color-dots {
    max-width: 208px;
  }

  .interview {
    padding: 60px 0;
  }

  .interview__top {
    flex-direction: column;
    gap: 20px;
    width: 100%;
    position: static;
  }

  .interview__image-sp-role {
    font-size: 11px;
    line-height: 18px;
  }

  .interview__image-sp-name {
    font-size: 14px;
  }

  .interview__quote {
    position: static;
    font-size: 16px;
    line-height: 28px;
    width: 100%;
    max-width: 100%;
    max-height: 350px;
    margin-left: 0;
    padding-left: 0;
    padding-right: 0;
    overflow-y: auto;
  }

  .qa {
    padding: 60px 0;
  }

  .qa__q-text {
    font-size: 16px;
  }

  .qa__thumbnail img {
    width: 100%;
    max-width: 450px;
    height: auto;
  }

  .qa__video {
    max-width: 100%;
    padding: 0 16px 18px;
  }

  .service {
    padding: 40px 16px;
  }

  .service__card,
  .warranty__card {
    padding: 20px 12px;
  }

  .service__subtitle,
  .warranty__subtitle {
    font-size: 18px;
    line-height: 28px;
    padding-top: 0;
    padding-bottom: 4px;
  }

  .service__title {
    font-size: 24px;
    line-height: 36px;
    padding-bottom: 12px;
  }

  .service__points {
    padding-top: 8px;
  }

  .service__appeal {
    font-size: 20px;
    line-height: 30px;
  }

  .service__point-num {
    width: 32px;
    height: 32px;
    min-width: 32px;
    font-size: 16px;
  }

  .service__point p {
    font-size: 16px;
    line-height: 26px;
  }

  .service__desc {
    width: 100%;
    font-size: 14px;
    line-height: 24px;
  }

  .warranty {
    padding: 40px 16px;
  }

  .warranty__title {
    font-size: 24px;
    line-height: 36px;
    margin-bottom: 0;
    padding-bottom: 12px;
  }

  .warranty__desc {
    width: 100%;
    font-size: 14px;
    line-height: 24px;
  }

  .warranty__note {
    width: 100%;
    font-size: 13px;
    line-height: 22px;
  }

  .campaign {
    padding: 60px 0 20px;
    min-height: auto;
  }

  .campaign__main-title {
    font-size: 24px;
    line-height: 1.3;
  }

  .campaign__title-large {
    font-size: 32px;
  }

  .campaign__desc {
    font-size: 20px;
    line-height: 32px;
    letter-spacing: 0;
  }

  .campaign__coupon-bar {
    font-size: 18px;
    line-height: 32px;
    padding: 10px 16px;
  }

  .campaign__date-num {
    font-size: 32px;
    line-height: 48px;
  }

  .campaign__date-day {
    font-size: 16px;
    line-height: 28px;
  }

  .campaign__bg {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }

  .campaign__period {
    flex-wrap: wrap;
    gap: 10px;
  }

  .campaign__date {
    gap: 8px;
  }

  .campaign .container {
    gap: 20px;
  }

  .fixed-purchase-btn {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    transform: none;
    width: 100%;
    min-height: 0;
    padding: 14px 20px calc(14px + env(safe-area-inset-bottom, 0px));
    border-left: none;
    border-bottom: none;
    border-radius: 0;
    font-size: 19px;
    letter-spacing: 0.08em;
    line-height: 1.2;
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    flex-direction: row;
    gap: 10px;
    box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.16);
  }

  .fixed-purchase-btn:hover {
    transform: none;
  }

  .footer {
    padding: 30px 0;
  }

  .footer__title img {
    height: 28px;
    width: auto;
  }
}