:root {
  color-scheme: light;
  --faq-bg: #f6f2ec;
  --faq-panel: rgba(255, 255, 255, 0.84);
  --faq-panel-strong: #ffffff;
  --faq-ink: #312d29;
  --faq-ink-soft: #5d5650;
  --faq-ink-faint: #8d857b;
  --faq-line: rgba(111, 98, 80, 0.14);
  --faq-line-strong: rgba(111, 98, 80, 0.24);
  --faq-accent: #76695a;
  --faq-accent-soft: #ebe2d4;
  --faq-accent-wash: #f6efe5;
  --faq-beige: #f4efe8;
  --faq-shadow: 0 24px 58px rgba(73, 59, 42, 0.08);
  --faq-shadow-soft: 0 28px 68px rgba(73, 59, 42, 0.08);
  --faq-shadow-strong: 0 40px 96px rgba(48, 38, 28, 0.16);
  --faq-dark: #23313c;
  --faq-dark-soft: #30414f;
  --faq-radius-xl: 34px;
  --faq-radius-lg: 26px;
  --faq-radius-md: 18px;
  --faq-shell: min(1180px, calc(100% - 32px));
  --faq-section-space: clamp(120px, 12vw, 168px);
  --faq-gap: clamp(24px, 3vw, 34px);
  --faq-font-sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --faq-font-serif: "Shippori Mincho", "Yu Mincho", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--faq-ink);
  background:
    radial-gradient(circle at top left, rgba(232, 222, 208, 0.72), transparent 28%),
    linear-gradient(180deg, #fcfaf6 0%, #f7f2eb 52%, #f2ece5 100%);
  font-family: var(--faq-font-sans);
  line-height: 1.9;
  letter-spacing: 0.01em;
}

body::before {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(118, 105, 90, 0.028) 1px, transparent 1px),
    linear-gradient(180deg, rgba(118, 105, 90, 0.024) 1px, transparent 1px);
  background-size: 40px 40px;
  mask: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.45) 12%, rgba(0, 0, 0, 0.45) 88%, transparent);
  content: "";
  pointer-events: none;
  z-index: -1;
}

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

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

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

ul,
ol {
  padding: 0;
}

.shell {
  width: var(--faq-shell);
  margin: 0 auto;
}

.faq-page {
  padding-bottom: 48px;
}

.hero,
.overview,
.faq-section,
.cta {
  padding: var(--faq-section-space) 0;
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: clamp(460px, 56vh, 620px);
  padding: clamp(112px, 11vw, 144px) 0 clamp(72px, 6vw, 96px);
  overflow: hidden;
  background:
    linear-gradient(92deg, rgba(252, 250, 246, 0.96) 0%, rgba(252, 250, 246, 0.92) 36%, rgba(245, 241, 235, 0.72) 68%, rgba(236, 241, 245, 0.62) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(247, 244, 239, 0.08)),
    url("../images/faq-hero-library.jpg");
  background-position: center center, center center, 74% 50%;
  background-size: auto, auto, cover;
  background-repeat: no-repeat;
}

.hero::before,
.hero::after {
  position: absolute;
  content: "";
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 255, 255, 0.84) 0%, rgba(255, 255, 255, 0.34) 28%, transparent 56%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.42) 0%, rgba(255, 255, 255, 0.18) 36%, rgba(255, 255, 255, 0.04) 100%);
}

.hero::after {
  inset: auto 0 0;
  height: 26%;
  background: linear-gradient(180deg, rgba(252, 250, 246, 0), rgba(252, 250, 246, 0.74) 76%, rgba(252, 250, 246, 1) 100%);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-items: end;
  min-height: clamp(340px, 46vh, 470px);
  position: relative;
  z-index: 1;
}

.hero__content {
  display: grid;
  align-self: end;
  gap: 16px;
  max-width: 420px;
  padding: 0 0 clamp(12px, 2.4vw, 22px);
}

.hero__content h1 {
  margin-top: 0;
}

.hero-sub {
  max-width: 420px;
  color: rgba(81, 77, 72, 0.82);
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  line-height: 2.02;
  letter-spacing: 0.02em;
}

.hero__eyebrow,
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--faq-accent);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero__eyebrow {
  color: #90a0ad;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
}

.hero__eyebrow::before,
.section-label::before {
  width: 28px;
  height: 1px;
  background: currentColor;
  content: "";
}

.faq-section .section-label {
  color: var(--section-accent);
}

h1,
h2,
h3 {
  font-family: var(--faq-font-serif);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: 0.03em;
}

h1 {
  margin-top: 0;
  font-size: clamp(3.375rem, 8vw, 6.75rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 0.98;
}

.hero__content h1 {
  color: #433d38;
}

h2 {
  font-size: clamp(1.98rem, 3.2vw, 3rem);
}

h3 {
  font-size: 1.12rem;
}

.hero__body,
.faq-answer p,
.one-point p,
.flow-step p,
.use-card p,
.gcms-note,
.cta-card p {
  color: var(--faq-ink-soft);
}

.hero__body {
  margin-top: 18px;
  font-size: 0.98rem;
}

.hero__actions,
.cta-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 16px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button:hover,
.button:focus-visible {
  outline: none;
  transform: translateY(-1px);
}

.button--primary {
  background: var(--faq-dark);
  color: #ffffff;
  box-shadow: 0 20px 44px rgba(35, 49, 60, 0.24);
}

.button--secondary {
  border-color: var(--faq-line-strong);
  background: rgba(255, 255, 255, 0.72);
  color: var(--faq-ink);
}

.flow-diagram,
.diagram-card,
.faq-item,
.cta-card {
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
  box-shadow: var(--faq-shadow);
  backdrop-filter: blur(14px);
}

.section-head {
  display: grid;
  gap: 12px;
  max-width: 820px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(118, 105, 90, 0.12);
}

.flow-diagram {
  display: grid;
  gap: 16px;
  margin-top: 28px;
  padding: 28px;
  border-radius: var(--faq-radius-xl);
}

.flow-step {
  display: grid;
  gap: 6px;
  padding: 22px 20px;
  border: 1px solid rgba(91, 116, 139, 0.14);
  border-radius: var(--faq-radius-md);
  background: var(--faq-panel-strong);
}

.flow-step strong,
.use-card strong {
  color: var(--faq-ink);
  font-size: 1rem;
}

.flow-arrow {
  color: var(--faq-accent);
  font-size: 1.4rem;
  font-weight: 700;
  text-align: center;
}

.faq-section {
  --section-accent: var(--faq-accent);
  --section-shell-top: rgba(255, 255, 255, 0.82);
  --section-shell-bottom: rgba(247, 241, 233, 0.74);
  --section-card-top: rgba(255, 255, 255, 0.9);
  --section-card-bottom: rgba(255, 255, 255, 0.72);
  --section-card-open-top: rgba(255, 255, 255, 0.98);
  --section-card-open-bottom: rgba(255, 255, 255, 0.92);
  --section-note-bg: linear-gradient(180deg, rgba(247, 243, 237, 0.92), rgba(240, 243, 247, 0.96));
  position: relative;
  scroll-margin-top: 104px;
}

#basics {
  --section-accent: #7b6758;
  --section-shell-top: rgba(255, 255, 255, 0.9);
  --section-shell-bottom: rgba(249, 243, 236, 0.82);
}

#ifra-section {
  --section-accent: #5c7488;
  --section-shell-top: rgba(241, 247, 251, 0.92);
  --section-shell-bottom: rgba(235, 242, 247, 0.8);
}

#calculation {
  --section-accent: #8a6b52;
  --section-shell-top: rgba(252, 248, 242, 0.92);
  --section-shell-bottom: rgba(247, 239, 229, 0.82);
}

#sds-section {
  --section-accent: #60788c;
  --section-shell-top: rgba(242, 247, 250, 0.92);
  --section-shell-bottom: rgba(234, 241, 246, 0.82);
}

#gcms {
  --section-accent: #56616d;
  --section-shell-top: rgba(239, 242, 246, 0.94);
  --section-shell-bottom: rgba(232, 236, 241, 0.84);
}

#allergen {
  --section-accent: #7a6a62;
  --section-shell-top: rgba(248, 244, 241, 0.92);
  --section-shell-bottom: rgba(241, 236, 232, 0.84);
}

#misconceptions {
  --section-accent: #655e6e;
  --section-shell-top: rgba(245, 242, 247, 0.92);
  --section-shell-bottom: rgba(237, 233, 241, 0.82);
}

#consultation {
  --section-accent: #566d6a;
  --section-shell-top: rgba(241, 247, 245, 0.92);
  --section-shell-bottom: rgba(233, 240, 238, 0.82);
}

#product-faq {
  --section-accent: #8b6a57;
  --section-shell-top: rgba(251, 246, 241, 0.92);
  --section-shell-bottom: rgba(245, 237, 231, 0.84);
}

.faq-section > .shell {
  position: relative;
  padding: clamp(40px, 4.8vw, 56px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: calc(var(--faq-radius-xl) + 6px);
  background: linear-gradient(180deg, var(--section-shell-top), var(--section-shell-bottom));
  box-shadow: var(--faq-shadow-soft);
  backdrop-filter: blur(14px);
}

#basics {
  padding-top: clamp(96px, 10vw, 132px);
}

.faq-list {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}

.faq-item {
  border: 1px solid rgba(118, 105, 90, 0.12);
  border-radius: 28px;
  background: linear-gradient(180deg, var(--section-card-top), var(--section-card-bottom));
  box-shadow: 0 10px 24px rgba(73, 59, 42, 0.04);
  overflow: clip;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease, background 200ms ease;
}

.faq-item:hover,
.faq-item:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 20px 42px rgba(73, 59, 42, 0.09);
}

.faq-item[open] {
  border-color: rgba(118, 105, 90, 0.2);
  background: linear-gradient(180deg, var(--section-card-open-top), var(--section-card-open-bottom));
  box-shadow: 0 28px 56px rgba(73, 59, 42, 0.12);
}

.faq-item summary {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  min-height: 108px;
  padding: 30px 32px 30px 38px;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::before {
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 18px;
  width: 2px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), var(--section-accent) 16%, var(--section-accent) 84%, rgba(255, 255, 255, 0));
  content: "";
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item__q {
  display: grid;
  place-items: center;
  min-width: 54px;
  min-height: 54px;
  padding: 0 10px;
  border: 1px solid rgba(118, 105, 90, 0.12);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(245, 240, 234, 0.88));
  color: var(--section-accent);
  font-family: var(--faq-font-serif);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.faq-item summary span:nth-child(2) {
  display: block;
  min-width: 0;
  color: var(--faq-ink);
  font-size: clamp(1.06rem, 1.3vw, 1.16rem);
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.faq-item__icon {
  position: relative;
  width: 20px;
  height: 20px;
  transition: transform 220ms ease;
}

.faq-item__icon::before,
.faq-item__icon::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 1.5px;
  border-radius: 999px;
  background: var(--section-accent);
  content: "";
  transform: translate(-50%, -50%);
  transition: transform 180ms ease, opacity 180ms ease;
}

.faq-item__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item[open] .faq-item__icon::after {
  opacity: 0;
}

.faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: grid;
  gap: 14px;
  padding: 6px 32px 32px 124px;
  border-top: 1px solid rgba(118, 105, 90, 0.08);
}

.faq-answer p {
  max-width: 68ch;
  font-size: clamp(1.02rem, 1.22vw, 1.125rem);
  line-height: 1.98;
}

.faq-item[open] .faq-answer {
  animation: faq-answer-reveal 220ms ease both;
}

.one-point {
  display: grid;
  gap: 10px;
  margin-top: 4px;
  padding: 20px 0 20px 18px;
  border: 0;
  border-left: 1.5px solid var(--section-accent);
  border-radius: 0 16px 16px 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.42), rgba(246, 243, 239, 0.52));
}

.one-point::before {
  color: var(--section-accent);
  font-family: var(--faq-font-serif);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  content: "Lumiscent Note";
}

.one-point p strong {
  display: none;
}

.one-point p {
  font-size: 0.92rem;
  line-height: 1.84;
}

@keyframes faq-answer-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }

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

.diagram-card {
  display: grid;
  gap: 22px;
  margin-top: 28px;
  padding: 26px;
  border-radius: var(--faq-radius-xl);
}

.diagram-card__head {
  display: grid;
  gap: 10px;
}

.use-diagram,
.calc-diagram,
.sds-diagram,
.gcms-diagram {
  display: grid;
  gap: 22px;
}

.use-diagram__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.use-card,
.calc-box {
  display: grid;
  gap: 6px;
  align-content: start;
  min-height: 122px;
  padding: 20px;
  border: 1px solid rgba(91, 116, 139, 0.14);
  border-radius: var(--faq-radius-md);
  background: var(--faq-panel-strong);
}

.use-diagram__logic {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 18px;
  border-radius: var(--faq-radius-md);
  background: var(--faq-accent-wash);
  color: var(--faq-ink);
  font-weight: 700;
  text-align: center;
}

.calc-formula {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
}

.calc-box {
  min-height: auto;
  text-align: center;
}

.calc-box--accent {
  background: linear-gradient(180deg, #f4f8fb, #eef4f9);
}

.calc-sign {
  display: grid;
  place-items: center;
  color: var(--faq-accent);
  font-size: 1.4rem;
  font-weight: 700;
}

.calc-example {
  display: grid;
  gap: 12px;
  padding: 20px;
  border-radius: var(--faq-radius-md);
  background: linear-gradient(180deg, rgba(239, 243, 248, 0.94), rgba(255, 255, 255, 0.92));
}

.sds-sheet {
  position: relative;
  min-height: 320px;
  border: 1px solid rgba(91, 116, 139, 0.16);
  border-radius: var(--faq-radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 247, 251, 0.96)),
    linear-gradient(180deg, rgba(91, 116, 139, 0.06) 1px, transparent 1px);
  background-size: auto, 100% 36px;
  overflow: hidden;
}

.sds-sheet::before {
  position: absolute;
  inset: 22px 24px;
  background:
    linear-gradient(180deg, rgba(91, 116, 139, 0.12) 1px, transparent 1px),
    linear-gradient(180deg, rgba(91, 116, 139, 0.12) 1px, transparent 1px),
    linear-gradient(180deg, rgba(91, 116, 139, 0.12) 1px, transparent 1px);
  background-repeat: no-repeat;
  background-size: 100% 1px, 100% 1px, 100% 1px;
  background-position: 0 68px, 0 148px, 0 228px;
  content: "";
}

.sds-highlight {
  position: absolute;
  left: 28px;
  right: 28px;
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 0 18px;
  border-radius: 14px;
  background: rgba(219, 228, 236, 0.42);
  color: var(--faq-ink);
  font-weight: 700;
}

.sds-highlight--top {
  top: 34px;
}

.sds-highlight--mid {
  top: 114px;
}

.sds-highlight--low {
  top: 194px;
}

.sds-highlight--bottom {
  top: 274px;
}

.gcms-chart {
  position: relative;
  min-height: 280px;
  padding: 18px 24px 40px;
  border: 1px solid rgba(91, 116, 139, 0.16);
  border-radius: var(--faq-radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(242, 246, 250, 0.98)),
    linear-gradient(180deg, rgba(91, 116, 139, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 116, 139, 0.06) 1px, transparent 1px);
  background-size: auto, 100% 52px, 52px 100%;
  overflow: hidden;
}

.gcms-chart::after {
  position: absolute;
  left: 42px;
  right: 20px;
  bottom: 34px;
  height: 1.5px;
  background: rgba(40, 49, 58, 0.26);
  content: "";
}

.gcms-chart::before {
  position: absolute;
  top: 18px;
  bottom: 34px;
  left: 42px;
  width: 1.5px;
  background: rgba(40, 49, 58, 0.26);
  content: "";
}

.gcms-peak {
  position: absolute;
  bottom: 34px;
  width: 110px;
  border-top-left-radius: 999px;
  border-top-right-radius: 999px;
  background: linear-gradient(180deg, rgba(91, 116, 139, 0.88), rgba(91, 116, 139, 0.22));
  filter: blur(0.3px);
}

.gcms-peak--small {
  left: 86px;
  height: 86px;
}

.gcms-peak--medium {
  left: 250px;
  height: 128px;
}

.gcms-peak--large {
  left: 436px;
  height: 180px;
}

.gcms-peak--small2 {
  left: 636px;
  height: 72px;
}

.gcms-axis {
  position: absolute;
  color: var(--faq-ink-faint);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.gcms-axis--x {
  right: 24px;
  bottom: 8px;
}

.gcms-axis--y {
  top: 18px;
  left: 8px;
  writing-mode: vertical-rl;
}

.gcms-legend {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.legend-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 8px;
  border-radius: 50%;
  vertical-align: middle;
}

.legend-dot--large {
  background: rgba(91, 116, 139, 0.78);
}

.legend-dot--small {
  background: rgba(91, 116, 139, 0.4);
}

.gcms-note {
  font-size: 0.95rem;
}

.cta-card {
  position: relative;
  display: grid;
  gap: 20px;
  padding: clamp(42px, 5.2vw, 64px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: calc(var(--faq-radius-xl) + 8px);
  background:
    linear-gradient(90deg, rgba(35, 49, 60, 0.96) 0%, rgba(35, 49, 60, 0.9) 56%, rgba(35, 49, 60, 0.72) 100%),
    linear-gradient(135deg, var(--faq-dark) 0%, var(--faq-dark-soft) 100%);
  box-shadow: var(--faq-shadow-strong);
  text-align: left;
  color: #ffffff;
  backdrop-filter: none;
  overflow: hidden;
}

.cta-card::after {
  position: absolute;
  inset: 0 0 0 auto;
  width: min(38%, 360px);
  background:
    linear-gradient(90deg, rgba(35, 49, 60, 0) 0%, rgba(35, 49, 60, 0.2) 18%, rgba(35, 49, 60, 0.68) 100%),
    url("../images/product-hero-anniversary-perfume.jpg");
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0.48;
  content: "";
}

.cta-card > * {
  position: relative;
  z-index: 1;
}

.cta-card p {
  max-width: 28ch;
  margin: 0;
  color: rgba(245, 242, 236, 0.84);
}

.cta-card h2 {
  max-width: 9ch;
  color: #ffffff;
}

.cta-card__actions {
  margin-top: 12px;
}

.cta-card .section-label {
  color: rgba(244, 234, 219, 0.86);
}

.cta-card .button--secondary {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.page-footer {
  width: var(--faq-shell);
  margin: 0 auto;
  padding: 10px 0 40px;
}

@media (max-width: 1040px) {
  .cta-card::after {
    width: min(34%, 280px);
  }

  .use-diagram__grid,
  .gcms-legend {
    grid-template-columns: minmax(0, 1fr);
  }

  .calc-formula {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .hero,
  .overview,
  .faq-section,
  .cta {
    padding: clamp(88px, 18vw, 112px) 0;
  }

  h1 {
    font-size: clamp(3rem, 17vw, 4.25rem);
  }

  h2 {
    font-size: clamp(1.76rem, 8vw, 2.34rem);
  }

  .hero {
    min-height: 52vh;
    padding: clamp(100px, 21vw, 124px) 0 60px;
    background:
      linear-gradient(92deg, rgba(252, 250, 246, 0.96) 0%, rgba(252, 250, 246, 0.92) 42%, rgba(244, 239, 233, 0.74) 70%, rgba(236, 241, 245, 0.64) 100%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(246, 242, 237, 0.08)),
      url("../images/faq-hero-library.jpg");
    background-position: center center, center center, 70% center;
    background-size: auto, auto, cover;
    background-repeat: no-repeat;
  }

  .hero__grid {
    min-height: auto;
  }

  .hero__content {
    gap: 12px;
    max-width: 320px;
    padding: 0 0 4px;
  }

  .hero-sub {
    max-width: 17ch;
    font-size: clamp(1.05rem, 4.8vw, 1.22rem);
    line-height: 1.96;
  }

  .faq-section > .shell {
    padding: 30px 20px;
    border-radius: 28px;
  }

  .section-head {
    padding-bottom: 18px;
  }

  .button {
    letter-spacing: 0.08em;
  }

  #basics {
    padding-top: 72px;
  }

  .hero__actions,
  .cta-card__actions {
    flex-direction: column;
  }

  .hero__actions .button,
  .cta-card__actions .button {
    width: 100%;
  }

  .faq-item summary,
  .diagram-card,
  .flow-diagram,
  .cta-card {
    padding-left: 20px;
    padding-right: 20px;
  }

  .faq-item summary {
    gap: 16px;
    min-height: 92px;
    padding-top: 24px;
    padding-bottom: 24px;
    padding-left: 28px;
  }

  .faq-item summary::before {
    top: 16px;
    bottom: 16px;
    left: 12px;
  }

  .faq-item__q {
    min-width: 46px;
    min-height: 46px;
  }

  .faq-item summary span:nth-child(2) {
    font-size: 1rem;
  }

  .faq-answer {
    gap: 11px;
    padding: 4px 24px 28px 28px;
  }

  .sds-sheet {
    min-height: 290px;
  }

  .sds-highlight {
    left: 18px;
    right: 18px;
  }

  .gcms-chart {
    min-height: 240px;
    padding-left: 18px;
    padding-right: 18px;
  }

  .gcms-peak--small {
    left: 70px;
    width: 74px;
  }

  .gcms-peak--medium {
    left: 168px;
    width: 84px;
  }

  .gcms-peak--large {
    left: 282px;
    width: 92px;
  }

  .gcms-peak--small2 {
    left: 390px;
    width: 68px;
  }

  .cta-card::after {
    display: none;
  }
}

@media (max-width: 520px) {
  :root {
    --faq-shell: min(100% - 24px, 1180px);
  }

  .hero {
    padding-top: 94px;
    padding-bottom: 48px;
    background-position: center center, center center, 70% center;
  }

  .faq-section {
    scroll-margin-top: 88px;
  }

  .faq-item summary {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .faq-item__icon {
    grid-column: auto;
    justify-self: end;
    margin-top: 0;
  }

  .flow-step,
  .use-card,
  .calc-box,
  .calc-example,
  .one-point {
    padding: 18px;
  }

  .one-point {
    padding-top: 18px;
    padding-left: 16px;
  }
}