:root {
  --c-primary:       #1B3A6B;
  --c-primary-dk:    #122852;
  --c-primary-lt:    #2C5299;
  --c-accent:        #E07020;
  --c-accent-dk:     #C05C10;
  --c-bg:            #F6F4EF;
  --c-surface:       #FFFFFF;
  --c-text:          #1A1A1A;
  --c-text-muted:    #6B6561;
  --c-border:        #DED9D2;
  --c-placeholder:   #E4E0DA;
  --c-placeholder-t: #B8B4AE;

  --font:            'Noto Sans JP', sans-serif;
  --radius-sm:       4px;
  --radius-md:       8px;
  --radius-lg:       16px;
  --radius-xl:       24px;

  --max-w: 1140px;
  --px:    clamp(16px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background-color: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--px);
}
.section {
  padding-block: 88px;
}
.section--alt {
  background-color: var(--c-surface);
}
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-subtitle {
  font-size: 16px;
  color: var(--c-text-muted);
  max-width: 600px;
  line-height: 1.7;
}
.text-center { text-align: center; }
.text-center .section-subtitle { margin-inline: auto; }

.section--centered {
  text-align: center;
}
.section--centered .section-subtitle,
.section--centered .section-title,
.section--centered .section-label {
  margin-inline: auto;
}

.about-teaser--center {
  text-align: center;
}
.about-teaser--center .about-teaser__text {
  margin-inline: auto;
}
.about-teaser--center .about-teaser__stats {
  justify-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  border: 2px solid transparent;
  white-space: nowrap;
  line-height: 1.2;
}
.btn-primary {
  background-color: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
}
.btn-primary:hover {
  background-color: var(--c-accent-dk);
  border-color: var(--c-accent-dk);
}
.btn-outline {
  background-color: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}
.btn-outline:hover {
  background-color: var(--c-primary);
  color: #fff;
}
.btn-outline-white {
  background-color: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background-color: rgba(255,255,255,0.12);
  border-color: #fff;
}
.btn-sm {
  padding: 10px 20px;
  font-size: 13px;
}
.btn-full {
  width: 100%;
}

.img-placeholder {
  background-color: var(--c-placeholder);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--c-placeholder-t);
  font-size: 12px;
  font-weight: 500;
  gap: 10px;
  border-radius: var(--radius-md);
  letter-spacing: 0.05em;
}

.site-header {
  background-color: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding-block: 18px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .container {
  display: flex;
  align-items: center;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand__logo {
  flex-shrink: 0;
  display: block;
}
.brand__name {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: -0.03em;
}
.brand__name em {
  font-style: normal;
  color: var(--c-accent);
}

.hero {
  background-color: var(--c-primary);
  color: #fff;
  padding-block: 96px;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 99px;
  margin-bottom: 24px;
}
.hero__badge-dot {
  width: 6px;
  height: 6px;
  background-color: var(--c-accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.hero__title {
  font-size: clamp(28px, 4.5vw, 54px);
  font-weight: 700;
  line-height: 1.22;
  margin-bottom: 20px;
  color: #fff;
}
.hero__subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 460px;
}
.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  height: 420px;
}

.about-teaser .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 860px;
}
.about-teaser__image-wrap {
  width: 100%;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 48px;
}
.about-teaser__image {
  border-radius: var(--radius-xl);
  height: 320px;
  overflow: hidden;
  width: 100%;
}
.about-teaser__text {
  margin-top: 20px;
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 640px;
  margin-inline: auto;
}
.about-teaser__text:last-of-type {
  margin-bottom: 32px;
}
.about-teaser__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
  width: 100%;
  max-width: 520px;
  margin-inline: auto;
}
.stat-card {
  background-color: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
}
.stat-card__number {
  font-size: 26px;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.1;
  margin-bottom: 4px;
}
.stat-card__label {
  font-size: 12px;
  color: var(--c-text-muted);
  line-height: 1.4;
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 52px;
}
.category-card {
  background-color: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border-bottom: 3px solid transparent;
}
.category-card:hover {
  border-bottom-color: var(--c-accent);
}
.category-card__icon {
  width: 60px;
  height: 60px;
  background-color: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: 18px;
}
.category-card__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 8px;
}
.category-card__desc {
  font-size: 13px;
  color: var(--c-text-muted);
  line-height: 1.6;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 52px;
}
.product-card {
  background-color: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.product-card__image {
  height: 210px;
  flex-shrink: 0;
}
.product-card__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card__category {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 8px;
}
.product-card__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.product-card__desc {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-bottom: 14px;
  line-height: 1.6;
  flex: 1;
}
.product-card__price {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 16px;
}
.product-card__price sup {
  font-size: 13px;
  font-weight: 500;
  vertical-align: super;
}
.product-card .btn {
  width: 100%;
  font-size: 14px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 52px;
}
.feature-card {
  background-color: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
}
.feature-card__icon {
  width: 54px;
  height: 54px;
  background-color: var(--c-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.feature-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}
.feature-card__text {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.75;
}

.steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 52px;
  position: relative;
}
.steps__grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: calc(100% / 6);
  right: calc(100% / 6);
  height: 2px;
  background-color: var(--c-border);
  z-index: 0;
}
.step-card {
  text-align: center;
  padding: 0 32px 32px;
  position: relative;
  z-index: 1;
}
.step-card__number {
  width: 56px;
  height: 56px;
  background-color: var(--c-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin-inline: auto;
  margin-bottom: 22px;
  position: relative;
  border: 3px solid var(--c-bg);
}
.step-card__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}
.step-card__text {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.75;
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 52px;
}
.testimonial-card {
  background-color: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.testimonial-card__stars {
  display: flex;
  gap: 4px;
  margin-bottom: 18px;
}
.star-icon {
  color: var(--c-accent);
  font-size: 16px;
  line-height: 1;
}
.testimonial-card__text {
  font-size: 15px;
  color: var(--c-text);
  line-height: 1.75;
  margin-bottom: 22px;
  flex: 1;
}
.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--c-border);
  padding-top: 18px;
}
.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--c-placeholder);
  flex-shrink: 0;
}
.testimonial-card__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.2;
}
.testimonial-card__role {
  font-size: 12px;
  color: var(--c-text-muted);
  margin-top: 2px;
}

.faq__inner {
  max-width: 800px;
  margin-inline: auto;
  margin-top: 52px;
}
.faq-item {
  border-bottom: 1px solid var(--c-border);
}
.faq-item:first-child {
  border-top: 1px solid var(--c-border);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
  text-align: left;
  gap: 16px;
  cursor: pointer;
}
.faq-question__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background-color: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq-question__icon svg {
  color: var(--c-primary);
}
.faq-answer {
  display: none;
  padding-bottom: 22px;
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.75;
}
.faq-item.is-open .faq-answer {
  display: block;
}
.faq-item.is-open .faq-question__icon {
  background-color: var(--c-accent);
  border-color: var(--c-accent);
}
.faq-item.is-open .faq-question__icon svg {
  color: #fff;
}
.faq-item.is-open .faq-question__icon .icon-plus {
  display: none;
}
.faq-item .faq-question__icon .icon-minus {
  display: none;
}
.faq-item.is-open .faq-question__icon .icon-minus {
  display: block;
}

.cta-banner {
  background-color: var(--c-accent);
  color: #fff;
  padding-block: 72px;
}
.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-banner__title {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  max-width: 540px;
}
.cta-banner__sub {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  margin-top: 10px;
}
.cta-banner .btn-outline-white {
  border-color: rgba(255,255,255,0.7);
  font-size: 16px;
  padding: 14px 32px;
  flex-shrink: 0;
  white-space: nowrap;
}

.contacts {
  background-color: var(--c-primary);
  color: #fff;
  padding-block: 88px;
}
.contacts .section-label {
  color: rgba(255,255,255,0.5);
}
.contacts .section-title {
  color: #fff;
}
.contacts .section-subtitle {
  color: rgba(255,255,255,0.65);
}
.contacts__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 52px;
}
.contact-item {
  background-color: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}
.contact-item__icon {
  width: 50px;
  height: 50px;
  background-color: var(--c-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.contact-item__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 10px;
}
.contact-item__value {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  line-height: 1.55;
}
.contact-item__value a {
  color: #fff;
}
.contact-item__value a:hover {
  color: var(--c-accent);
}

.site-footer {
  background-color: var(--c-primary-dk);
  color: rgba(255,255,255,0.65);
  padding-block: 56px 40px;
}
.site-footer__top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-col {
  display: flex;
  flex-direction: column;
}
.footer-col--brand {
  gap: 0;
}
.footer-address {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  line-height: 1.8;
  font-style: normal;
  margin-top: 12px;
}
.footer-address a {
  color: rgba(255,255,255,0.55);
}
.footer-address a:hover {
  color: #fff;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-brand__name {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}
.footer-brand__name em {
  font-style: normal;
  color: var(--c-accent);
}
.footer-tagline {
  font-size: 14px;
  line-height: 1.7;
  max-width: 340px;
  color: rgba(255,255,255,0.55);
}
.footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.footer-nav__title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 16px;
}
.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-nav__list a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
}
.footer-nav__list a:hover {
  color: #fff;
}
.site-footer__bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-legal a:hover {
  color: rgba(255,255,255,0.8);
}

@media (max-width: 1024px) {
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .categories__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section { padding-block: 64px; }

  .hero { padding-block: 64px; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__image { height: 260px; }
  .hero__subtitle { max-width: 100%; }

  .about-teaser__image { height: 220px; }
  .about-teaser__image-wrap { margin-bottom: 32px; }

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

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

  .features__grid { grid-template-columns: 1fr; gap: 16px; }

  .steps__grid { grid-template-columns: 1fr; }
  .steps__grid::before { display: none; }
  .step-card { padding: 0 16px 28px; }

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

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

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

  .site-footer__top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-col--brand { grid-column: 1 / -1; }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .categories__grid { grid-template-columns: 1fr 1fr; }
  .about-teaser__stats { grid-template-columns: 1fr 1fr 1fr; }
  .site-footer__top { grid-template-columns: 1fr; }
}