@charset "UTF-8";

/* =========================================================
   Design tokens
   ========================================================= */
:root {
  /* Brand colors (ロゴから抽出) */
  --color-brand: #1ca3e2;
  --color-brand-strong: #1171c3;
  --color-brand-deep: #0d58af;
  --color-navy: #0e121c;
  --color-navy-500: #3d4756;

  --color-text: #1c2430;
  --color-text-muted: #4a5563;
  --color-bg: #ffffff;
  --color-bg-subtle: #f4f7fb;
  --color-border: #e3e9f0;
  --color-link: #0f6cb8;

  --gradient-brand: linear-gradient(135deg, #0f76bd 0%, #0d58af 100%);
  --gradient-dark: linear-gradient(160deg, #0b0f18 0%, #141d2f 45%, #0f3a68 100%);

  --font-base: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;

  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-section: clamp(4rem, 9vw, 7.5rem);

  --container: 1120px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --header-height: 64px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --shadow-card: 0 2px 4px rgb(14 18 28 / 4%), 0 12px 32px rgb(14 18 28 / 6%);
  --shadow-card-hover: 0 4px 8px rgb(14 18 28 / 6%), 0 20px 44px rgb(14 18 28 / 12%);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (width >= 900px) {
  :root {
    --header-height: 80px;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.9;
  font-feature-settings: "palt";
  line-break: strict;
  overflow-wrap: break-word;
}

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

/* 日本語の不自然な折り返しを抑制（未対応ブラウザでは通常の改行に戻る） */
.hero__title,
.hero__lead,
.section__title,
.section__desc,
.about__catch,
.about__text p,
.values__text,
.services__text,
.cta__title,
.cta__text,
.company__value,
.footer__address {
  word-break: auto-phrase;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin: 0;
}

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

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

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

img {
  height: auto;
}

address {
  font-style: normal;
}

:focus-visible {
  outline: 3px solid var(--color-brand-strong);
  outline-offset: 3px;
}

/* 濃色背景セクションでは白のフォーカスリングにする */
.hero :focus-visible,
.cta :focus-visible {
  outline-color: #fff;
}

[id] {
  scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

.skip-link {
  position: absolute;
  z-index: 200;
  inset-inline-start: 50%;
  inset-block-start: 0;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background-color: var(--color-navy);
  color: #fff;
  font-size: 0.875rem;
  translate: -50% -120%;
  transition: translate var(--transition);

  &:focus-visible {
    translate: -50% 0;
  }
}

.link {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--transition);

  &:hover {
    color: var(--color-brand-deep);
  }
}

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

@media (width >= 900px) {
  .u-pc-only {
    display: inline;
  }
}

/* =========================================================
   Header
   ========================================================= */
.header {
  position: fixed;
  z-index: 100;
  inset-block-start: 0;
  inset-inline: 0;
  background-color: rgb(255 255 255 / 92%);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-block-end: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);

  &.is-scrolled {
    border-block-end-color: var(--color-border);
    box-shadow: 0 4px 20px rgb(14 18 28 / 6%);
  }
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  max-width: var(--container);
  min-height: var(--header-height);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header__logo {
  display: flex;
  align-items: center;

  & img {
    width: auto;
    height: 26px;
    transition: opacity var(--transition);
  }

  &:hover img {
    opacity: 0.7;
  }
}

@media (width >= 900px) {
  .header__logo img {
    height: 32px;
  }
}

/* 開閉はJSに依存するため、JS無効時はボタンを出さない（ナビはフッターで代替） */
.header__toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem;
  border: 0;
  background: none;
  color: var(--color-navy);
  font-family: inherit;
  cursor: pointer;
}

.js .header__toggle {
  display: flex;
}

.header__toggle-bars {
  position: relative;
  display: block;
  width: 24px;
  height: 16px;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 2px;
  transition: background-size var(--transition);

  &::before,
  &::after {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transition: translate var(--transition), rotate var(--transition);
  }

  &::before {
    inset-block-start: 0;
  }

  &::after {
    inset-block-end: 0;
  }
}

.header__toggle[aria-expanded="true"] .header__toggle-bars {
  background-size: 0 2px;

  &::before {
    translate: 0 7px;
    rotate: 45deg;
  }

  &::after {
    translate: 0 -7px;
    rotate: -45deg;
  }
}

.header__toggle-label {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
}

/* Navigation */
.nav {
  position: fixed;
  inset-block-start: var(--header-height);
  inset-inline: 0;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  padding: var(--space-md) var(--gutter) var(--space-lg);
  background-color: var(--color-bg);
  border-block-end: 1px solid var(--color-border);
  box-shadow: 0 16px 32px rgb(14 18 28 / 10%);
  visibility: hidden;
  opacity: 0;
  translate: 0 -0.5rem;
  transition: opacity var(--transition), translate var(--transition), visibility var(--transition);

  &.is-open {
    visibility: visible;
    opacity: 1;
    translate: 0 0;
  }
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.nav__link {
  display: block;
  padding-block: 0.75rem;
  border-block-end: 1px solid var(--color-border);
  font-weight: 500;
  transition: color var(--transition);

  &:hover {
    color: var(--color-brand-strong);
  }
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-block-start: var(--space-sm);
  padding: 0.875rem 1.5rem;
  border-radius: 999px;
  background-image: var(--gradient-brand);
  color: #fff;
  font-weight: 700;
  font-size: 0.9375rem;
  transition: opacity var(--transition), translate var(--transition);

  &:hover {
    opacity: 0.88;
  }
}

@media (width >= 900px) {
  .header__toggle,
  .js .header__toggle {
    display: none;
  }

  .nav {
    position: static;
    max-height: none;
    overflow: visible;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    visibility: visible;
    opacity: 1;
    translate: none;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: clamp(1rem, 2.6vw, 2rem);
  }

  .nav__link {
    padding-block: 0.25rem;
    border: 0;
    font-size: 0.9375rem;
  }

  .nav__cta {
    margin-block-start: 0;
    padding: 0.75rem 1.5rem;
  }
}

/* =========================================================
   Buttons
   ========================================================= */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 52px;
  padding: 0.75rem 2rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  text-align: center;
  transition: opacity var(--transition), background-color var(--transition), color var(--transition), translate var(--transition), box-shadow var(--transition);

  &:hover {
    translate: 0 -2px;
  }
}

.button--primary {
  background-image: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 10px 24px rgb(13 88 175 / 28%);

  &:hover {
    opacity: 0.92;
    box-shadow: 0 14px 30px rgb(13 88 175 / 34%);
  }
}

.button--ghost {
  border: 1px solid rgb(255 255 255 / 45%);
  color: #fff;

  &:hover {
    background-color: rgb(255 255 255 / 12%);
  }
}

.button--outline {
  border: 1px solid rgb(255 255 255 / 60%);
  color: #fff;

  &:hover {
    background-color: rgb(255 255 255 / 12%);
  }
}

.button--lg {
  min-height: 60px;
  padding-inline: 2.5rem;
}

/* =========================================================
   Section common
   ========================================================= */
.section {
  padding-block: var(--space-section);
}

.section--subtle {
  background-color: var(--color-bg-subtle);
}

.section__inner,
.hero__inner,
.cta__inner,
.footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section__head {
  margin-block-end: clamp(2.5rem, 5vw, 4rem);
}

.section__label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-brand-strong);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;

  &::after {
    content: "";
    flex: 0 0 auto;
    width: 2.5rem;
    height: 1px;
    background-color: currentColor;
  }
}

.section__label--light {
  justify-content: center;
  color: var(--color-brand);
}

.section__title {
  margin-block-start: var(--space-2xs);
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.section__desc {
  max-width: 40em;
  margin-block-start: var(--space-sm);
  color: var(--color-text-muted);
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(560px, 90svh, 820px);
  padding-block: calc(var(--header-height) + 3rem) var(--space-xl);
  background-color: var(--color-navy);
  background-image: var(--gradient-dark);
  color: #fff;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;

  &::before {
    content: "";
    position: absolute;
    inset-block-start: -20%;
    inset-inline-end: -30%;
    width: 70%;
    aspect-ratio: 1;
    background-image: radial-gradient(circle, rgb(28 163 226 / 30%) 0%, transparent 68%);
  }

  &::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(to right, rgb(255 255 255 / 5%) 1px, transparent 1px),
      linear-gradient(to bottom, rgb(255 255 255 / 5%) 1px, transparent 1px);
    background-size: 72px 72px;
    -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
    mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
  }
}

.hero__arc {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: -28%;
  width: min(680px, 90%);
  rotate: -18deg;
  translate: 0 -50%;
  opacity: 0.65;
}

.hero__inner {
  position: relative;
  width: 100%;
}

.hero__eyebrow {
  color: var(--color-brand);
  font-size: clamp(0.6875rem, 2.6vw, 0.8125rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.6;
  text-transform: uppercase;
}

.hero__title {
  margin-block-start: var(--space-md);
  font-size: clamp(2rem, 7.2vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.hero__lead {
  max-width: 44em;
  margin-block-start: var(--space-md);
  color: rgb(255 255 255 / 88%);
  font-size: clamp(0.9375rem, 2.4vw, 1.0625rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-block-start: clamp(2rem, 5vw, 3rem);
}

@media (width < 480px) {
  .hero__actions .button {
    flex: 1 1 100%;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero__eyebrow,
  .hero__title,
  .hero__lead,
  .hero__actions {
    animation: hero-in 0.9s cubic-bezier(0.2, 0.7, 0.3, 1) backwards;
  }

  .hero__eyebrow {
    animation-delay: 0.05s;
  }

  .hero__title {
    animation-delay: 0.15s;
  }

  .hero__lead {
    animation-delay: 0.3s;
  }

  .hero__actions {
    animation-delay: 0.45s;
  }

  .hero__arc {
    animation: arc-in 1.6s cubic-bezier(0.2, 0.7, 0.3, 1) backwards;
  }
}

@keyframes hero-in {
  from {
    opacity: 0;
    translate: 0 1.5rem;
  }
}

@keyframes arc-in {
  from {
    opacity: 0;
    rotate: -60deg;
  }
}

/* =========================================================
   About
   ========================================================= */
.about__catch {
  font-size: clamp(1.25rem, 3.6vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.about__text {
  display: grid;
  gap: var(--space-sm);
  margin-block-start: var(--space-md);
  color: var(--color-text-muted);
}

@media (width >= 900px) {
  .about__body {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }

  .about__text {
    margin-block-start: 0;
  }
}

.values {
  display: grid;
  gap: var(--space-md);
  margin-block-start: clamp(2.5rem, 6vw, 4.5rem);
}

@media (width >= 900px) {
  .values {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.values__item {
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), translate var(--transition);

  &:hover {
    box-shadow: var(--shadow-card-hover);
    translate: 0 -4px;
  }
}

.values__num {
  background-image: var(--gradient-brand);
  background-clip: text;
  color: transparent;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
}

.values__title {
  margin-block-start: var(--space-xs);
  font-size: 1.1875rem;
  font-weight: 700;
  line-height: 1.6;
}

.values__text {
  margin-block-start: var(--space-2xs);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* =========================================================
   Service
   ========================================================= */
.services {
  display: grid;
  gap: var(--space-md);
}

@media (width >= 900px) {
  .services {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.services__item {
  display: flex;
  flex-direction: column;
  padding: clamp(1.75rem, 3.4vw, 2.25rem);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), translate var(--transition);

  &:hover {
    box-shadow: var(--shadow-card-hover);
    translate: 0 -4px;
  }
}

.services__icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: rgb(28 163 226 / 12%);
  color: var(--color-brand-strong);

  & svg {
    width: 28px;
    height: 28px;
  }
}

.services__title {
  margin-block-start: var(--space-md);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.5;
}

.services__text {
  margin-block-start: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.services__list {
  display: grid;
  gap: 0.4rem;
  margin-block-start: var(--space-md);
  padding-block-start: var(--space-md);
  border-block-start: 1px dashed var(--color-border);
  font-size: 0.875rem;

  & li {
    position: relative;
    padding-inline-start: 1.25rem;
    line-height: 1.7;

    &::before {
      content: "";
      position: absolute;
      inset-block-start: 0.65em;
      inset-inline-start: 0.1rem;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-image: var(--gradient-brand);
    }
  }
}

/* =========================================================
   Company
   ========================================================= */
.company__layout {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

@media (width >= 900px) {
  .company__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.company__table {
  border-block-start: 1px solid var(--color-border);
}

.company__row {
  display: grid;
  gap: 0.2rem;
  padding-block: var(--space-sm);
  border-block-end: 1px solid var(--color-border);
}

@media (width >= 600px) {
  .company__row {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: var(--space-md);
    align-items: start;
  }
}

.company__key {
  color: var(--color-navy-500);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.company__value {
  font-size: 0.9375rem;
}

.company__map {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);

  & iframe {
    width: 100%;
    aspect-ratio: 4 / 3;
    border: 0;
  }
}

@media (width >= 900px) {
  .company__map iframe {
    aspect-ratio: 1 / 1;
  }
}

/* =========================================================
   CTA
   ========================================================= */
.cta {
  padding-block: var(--space-section);
  background-color: var(--color-navy);
  background-image: var(--gradient-dark);
  color: #fff;
  text-align: center;
}

.cta__title {
  margin-block-start: var(--space-sm);
  font-size: clamp(1.5rem, 4.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.5;
}

.cta__text {
  margin-block-start: var(--space-md);
  color: rgb(255 255 255 / 88%);
  font-size: clamp(0.9375rem, 2.4vw, 1rem);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-block-start: clamp(2rem, 5vw, 2.75rem);
}

.cta__actions .button--outline {
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1.4;
}

.cta__tel-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.cta__tel-num {
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}

.cta__note {
  margin-block-start: var(--space-md);
  color: rgb(255 255 255 / 75%);
  font-size: 0.8125rem;
}

@media (width < 480px) {
  .cta__actions .button {
    flex: 1 1 100%;
  }
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
  padding-block: clamp(2.5rem, 6vw, 4rem) var(--space-md);
  background-color: var(--color-bg-subtle);
  border-block-start: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  gap: var(--space-lg);
}

@media (width >= 900px) {
  .footer__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-xl);
    align-items: start;
  }
}

.footer__logo {
  width: auto;
  height: 28px;
}

.footer__address {
  margin-block-start: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  line-height: 2;
}

.footer__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem clamp(1rem, 2.4vw, 1.75rem);
  font-size: 0.875rem;
  font-weight: 500;
}

.footer__link {
  text-decoration: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
  transition: color var(--transition), text-decoration-color var(--transition);

  &:hover {
    color: var(--color-brand-strong);
    text-decoration-color: currentColor;
  }
}

.footer__copyright {
  max-width: var(--container);
  margin-block: clamp(2rem, 5vw, 3rem) 0;
  margin-inline: auto;
  padding-block-start: var(--space-md);
  padding-inline: var(--gutter);
  border-block-start: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-align: center;
}

/* =========================================================
   Scroll reveal (JS 有効時のみ適用)
   ========================================================= */
.is-reveal-ready [data-reveal] {
  opacity: 0;
  translate: 0 1.25rem;
  transition: opacity 0.7s ease, translate 0.7s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.is-reveal-ready [data-reveal].is-visible {
  opacity: 1;
  translate: 0 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .is-reveal-ready [data-reveal] {
    opacity: 1;
    translate: none;
  }
}