/* ============================================================
   BANTEX Inc. — Corporate Website Stylesheet
   Author: BANTEX Design System
   Version: 1.0.0
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  --color-primary:    #1A2332;
  --color-accent:     #2A6EBB;
  --color-bg:         #F8F7F5;
  --color-surface:    #EDECEA;
  --color-text:       #2C2C2C;
  --color-white:      #FFFFFF;
  --color-accent-dim: rgba(42, 110, 187, 0.12);

  --font-sans:  'Noto Sans JP', sans-serif;
  --font-brand: 'Inter', sans-serif;

  --header-h:  64px;
  --radius:    8px;
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.14);

  --transition-base: 0.28s cubic-bezier(0.4, 0, 0.2, 1);

  /* spacing scale */
  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 2rem;
  --sp-lg: 4rem;
  --sp-xl: 7rem;
}

/* ── Reset & Base ───────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-size: 15px;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* ── Accessibility ──────────────────────────────────────────── */

/* Skip navigation */
.skip-nav {
  position: absolute;
  top: -999px;
  left: 0;
  padding: 0.75rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  border-radius: 0 0 var(--radius) 0;
  z-index: 9999;
  transition: top 0.2s;
}

.skip-nav:focus {
  top: 0;
}

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

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

/* ── Container ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: var(--sp-sm);
}

/* ── Typography helpers ─────────────────────────────────────── */
.section-label {
  display: inline-block;
  font-family: var(--font-brand);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-heading {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 22px;
  color: var(--color-primary);
  line-height: 1.4;
  position: relative;
  display: inline-block;
  padding-bottom: 0.75rem;
  margin-bottom: var(--sp-md);
}

.section-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width var(--transition-base);
}

/* widen accent on section hover */
.section-heading-wrap:hover .section-heading::after {
  width: 72px;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  background: transparent;
  transition: background var(--transition-base),
              box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: var(--color-primary);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* ── Logo ── */
.site-logo {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  color: var(--color-white);
  text-decoration: none;
  line-height: 1;
  transition: opacity var(--transition-base);
}

.site-logo:hover {
  opacity: 0.8;
}

/* ── Desktop Nav ── */
.primary-nav {
  display: none;
}

.primary-nav ul {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.primary-nav a {
  font-size: 0.875rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.88);
  letter-spacing: 0.04em;
  padding: 0.25rem 0;
  position: relative;
  transition: color var(--transition-base);
}

.primary-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.primary-nav a:hover {
  color: var(--color-white);
}

.primary-nav a:hover::after {
  width: 100%;
}

/* ── Hamburger (mobile, CSS-only checkbox trick) ── */
.nav-toggle-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  z-index: 1100;
  position: relative;
}

.nav-toggle-label span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base),
              opacity var(--transition-base);
  transform-origin: center;
}

#nav-toggle {
  display: none;
}

/* Animate hamburger → X */
#nav-toggle:checked ~ .site-header .nav-toggle-label span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

#nav-toggle:checked ~ .site-header .nav-toggle-label span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

#nav-toggle:checked ~ .site-header .nav-toggle-label span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile drawer ── */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(300px, 80vw);
  height: 100dvh;
  background: var(--color-primary);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--sp-lg);
  transition: right var(--transition-base);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.3);
}

#nav-toggle:checked ~ .mobile-nav {
  right: 0;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mobile-nav a {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.06em;
  transition: color var(--transition-base);
}

.mobile-nav a:hover {
  color: var(--color-accent);
}

/* Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1040;
}

#nav-toggle:checked ~ .nav-overlay {
  display: block;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    #1A2332 0%,
    #1e2d42 40%,
    #243352 70%,
    #2A6EBB 100%
  );
  position: relative;
  overflow: hidden;
  text-align: center;
}

/* Decorative geometric shapes */
.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 55vw;
  height: 55vw;
  max-width: 640px;
  max-height: 640px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -8%;
  width: 40vw;
  height: 40vw;
  max-width: 500px;
  max-height: 500px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: calc(var(--header-h) + 2rem) var(--sp-sm) var(--sp-lg);
}

/* Grid lines decoration */
.hero-deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-deco::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(42, 110, 187, 0.3) 30%,
    rgba(42, 110, 187, 0.3) 70%,
    transparent
  );
}

.hero-brand {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: clamp(3.5rem, 12vw, 8rem);
  letter-spacing: 0.18em;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: 1.5rem;
  /* Subtle text shadow for depth */
  text-shadow: 0 2px 40px rgba(0, 0, 0, 0.4);
}

.hero-tagline {
  font-size: clamp(1.125rem, 3vw, 1.625rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 1.25rem;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.hero-sub {
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: rgba(255, 255, 255, 0.75);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 3rem;
  line-height: 1.9;
}

/* Accent line above tagline */
.hero-accent-line {
  width: 40px;
  height: 2px;
  background: var(--color-accent);
  margin: 0 auto 1.5rem;
  border-radius: 2px;
}

/* ── CTA Button ── */
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2.25rem;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
  box-shadow: 0 4px 16px rgba(42, 110, 187, 0.45);
}

.btn-cta:hover {
  background: #1f5a9a;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(42, 110, 187, 0.55);
}

.btn-cta:active {
  transform: translateY(0);
}

/* CSS-only ripple effect */
.btn-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.55s ease, height 0.55s ease, opacity 0.55s ease;
  opacity: 1;
}

.btn-cta:active::before {
  width: 320px;
  height: 320px;
  opacity: 0;
}

/* Scroll indicator */
.hero-scroll {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.15); }
}

.hero-scroll-text {
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.services {
  padding: var(--sp-xl) 0;
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: var(--sp-md);
}

/* ── Service Card ── */
.service-card {
  background: var(--color-surface);
  border-radius: calc(var(--radius) * 1.5);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  border-top: 3px solid transparent;
  transition: border-color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle at top right, rgba(42,110,187,0.07), transparent 70%);
  pointer-events: none;
}

.service-card:hover {
  border-top-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-number {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: 3rem;
  color: rgba(42, 110, 187, 0.12);
  line-height: 1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  transition: color var(--transition-base);
}

.service-card:hover .card-number {
  color: rgba(42, 110, 187, 0.22);
}

/* ── Card Icon (CSS + inline SVG) ── */
.card-icon {
  width: 52px;
  height: 52px;
  background: var(--color-accent-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: background var(--transition-base);
}

.card-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card:hover .card-icon {
  background: rgba(42, 110, 187, 0.2);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.card-catch {
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 0.875rem;
}

.card-desc {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.85;
}

/* ── Tag chips on cards ── */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 1.25rem;
}

/* Card link */
.card-link {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  transition: opacity var(--transition-base);
}

.card-link:hover {
  opacity: 0.7;
}

.card-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2em 0.7em;
  border-radius: 99px;
  background: rgba(42, 110, 187, 0.1);
  color: var(--color-accent);
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about {
  padding: var(--sp-xl) 0;
  background: var(--color-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
}

/* Company table */
.company-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-white);
}

.company-table caption {
  /* visually hidden caption for accessibility */
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.company-table th,
.company-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-surface);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.company-table th {
  width: 38%;
  font-weight: 700;
  color: var(--color-primary);
  background: #f3f2f0;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.company-table tr:last-child th,
.company-table tr:last-child td {
  border-bottom: none;
}

.company-table tr {
  transition: background var(--transition-base);
}

.company-table tr:hover td,
.company-table tr:hover th {
  background: rgba(42, 110, 187, 0.06);
}

.company-table a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(42, 110, 187, 0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition-base);
}

.company-table a:hover {
  text-decoration-color: var(--color-accent);
}

/* Invoice badge */
.invoice-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-family: var(--font-brand);
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 1px solid #d6d3d0;
  border-radius: 4px;
  padding: 0.2em 0.6em;
  letter-spacing: 0.04em;
}

/* About deco panel */
.about-deco {
  background: linear-gradient(135deg, var(--color-primary), #243352);
  border-radius: calc(var(--radius) * 1.5);
  padding: 2.5rem 2rem;
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-deco-title {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  color: var(--color-white);
}

.about-deco-body {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.9;
}

.about-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.about-stat-num {
  font-family: var(--font-brand);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.about-stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.04em;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact {
  padding: var(--sp-xl) 0;
  background: var(--color-bg);
}

.contact-inner {
  max-width: 700px;
  margin-inline: auto;
  text-align: center;
}

.contact-lead {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.contact-sub {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.contact-btns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

/* ── Primary Button (mail) ── */
.btn-contact-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  width: 100%;
  max-width: 340px;
  padding: 1rem 2rem;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
  box-shadow: 0 4px 16px rgba(42, 110, 187, 0.4);
}

.btn-contact-primary:hover {
  background: #1f5a9a;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(42, 110, 187, 0.5);
}

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

/* Ripple */
.btn-contact-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.55s ease, height 0.55s ease, opacity 0.55s ease;
  opacity: 1;
}

.btn-contact-primary:active::before {
  width: 400px;
  height: 400px;
  opacity: 0;
}

/* ── LINE Button ── */
.btn-contact-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  width: 100%;
  max-width: 340px;
  padding: 1rem 2rem;
  background: #06C755;
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
  box-shadow: 0 4px 16px rgba(6, 199, 85, 0.35);
}

.btn-contact-line:hover {
  background: #05b04c;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(6, 199, 85, 0.45);
}

.btn-contact-line:active {
  transform: translateY(0);
}

.btn-contact-line::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.55s ease, height 0.55s ease, opacity 0.55s ease;
  opacity: 1;
}

.btn-contact-line:active::before {
  width: 400px;
  height: 400px;
  opacity: 0;
}

/* ── Secondary Button (tel) ── */
.btn-contact-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  width: 100%;
  max-width: 340px;
  padding: 1rem 2rem;
  background: transparent;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  border: 2px solid var(--color-primary);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base),
              color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
}

.btn-contact-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 35, 50, 0.25);
}

.btn-contact-secondary:active {
  transform: translateY(0);
}

/* Ripple */
.btn-contact-secondary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.55s ease, height 0.55s ease, opacity 0.55s ease;
  opacity: 1;
}

.btn-contact-secondary:active::before {
  width: 400px;
  height: 400px;
  opacity: 0;
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ── Contact info strip ── */
.contact-info-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-surface);
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #555;
}

.contact-info-item strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--sp-lg) 0 var(--sp-md);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-logo {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: 1.375rem;
  letter-spacing: 0.15em;
  color: var(--color-white);
}

.footer-tagline {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.7;
}

.footer-address {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.9;
  font-style: normal;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-nav a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: var(--sp-md);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
}

.footer-copy {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.38);
}

.footer-divider {
  display: none;
}

/* ============================================================
   SECTION WRAPPER — shared padding & intro
   ============================================================ */
.section-intro {
  margin-bottom: var(--sp-sm);
}

/* ============================================================
   RESPONSIVE — MOBILE (max-width: 767px)
   ============================================================ */
@media (max-width: 767px) {

  /* Prevent horizontal scroll */
  html, body {
    overflow-x: hidden;
    max-width: 100vw;
  }

  /* Smaller base font */
  body {
    font-size: 13.5px;
  }

  /* Reduce section padding */
  .services,
  .about,
  .contact {
    padding: var(--sp-lg) 0;
  }

  /* Hero adjustments */
  .hero-brand {
    font-size: clamp(2.5rem, 14vw, 4rem);
    letter-spacing: 0.1em;
  }

  .hero-tagline {
    font-size: 1.05rem;
    padding-inline: 0.5rem;
  }

  .hero-sub {
    font-size: 0.8125rem;
    padding-inline: 0.5rem;
    margin-bottom: 2rem;
  }

  .hero-sub br {
    display: none;
  }

  .hero-scroll {
    margin-top: 2rem;
  }

  /* Section headings */
  .section-heading {
    font-size: 1.25rem;
  }

  .section-label {
    font-size: 0.6875rem;
  }

  /* Service cards */
  .service-card {
    padding: 1.75rem 1.25rem;
    text-align: center;
  }

  .card-icon {
    margin-inline: auto;
  }

  .card-number {
    font-size: 2.25rem;
  }

  .card-title {
    font-size: 1rem;
  }

  .card-catch {
    font-size: 0.75rem;
  }

  .card-desc {
    font-size: 0.8125rem;
    text-align: left;
  }

  .card-tags {
    justify-content: center;
  }

  .card-tag {
    font-size: 0.625rem;
  }

  /* Company table */
  .company-table {
    font-size: 0.8125rem;
  }

  .company-table th {
    font-size: 0.75rem;
    padding: 0.75rem 0.625rem;
    white-space: normal;
    width: 30%;
  }

  .company-table td {
    padding: 0.75rem 0.625rem;
    word-break: break-all;
  }

  /* About deco panel */
  .about-deco {
    padding: 1.75rem 1.25rem;
    text-align: center;
  }

  .about-deco-title {
    font-size: 1.05rem;
  }

  .about-deco-body {
    font-size: 0.8125rem;
  }

  .about-stat {
    align-items: center;
  }

  /* Contact section */
  .contact-lead {
    font-size: 0.9375rem;
  }

  .contact-sub {
    font-size: 0.8125rem;
    margin-bottom: 1.75rem;
  }

  .contact-btns {
    padding-inline: 1rem;
  }

  .btn-contact-primary,
  .btn-contact-line,
  .btn-contact-secondary {
    font-size: 0.8125rem;
    padding: 0.875rem 1.5rem;
    max-width: 100%;
  }

  .contact-info-strip {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
  }

  .contact-info-item {
    font-size: 0.75rem;
  }

  /* Footer */
  .site-footer {
    padding: var(--sp-md) 0 var(--sp-sm);
    text-align: center;
  }

  .footer-brand {
    align-items: center;
  }

  .footer-nav ul {
    align-items: center;
  }

  .footer-bottom {
    align-items: center;
  }

  .footer-copy {
    font-size: 0.6875rem;
  }
}

/* ============================================================
   RESPONSIVE — 768px+
   ============================================================ */
@media (min-width: 768px) {

  /* Typography */
  body {
    font-size: 16px;
  }

  .section-heading {
    font-size: 32px;
  }

  /* Header */
  .primary-nav {
    display: block;
  }

  .nav-toggle-label {
    display: none;
  }

  /* Hero */
  .hero-inner {
    max-width: 800px;
  }

  /* Services grid — 3 columns */
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* About grid — table + deco side by side */
  .about-grid {
    grid-template-columns: 3fr 2fr;
    align-items: start;
  }

  /* Contact buttons inline */
  .contact-btns {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  /* Footer grid */
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-divider {
    display: inline;
    margin-inline: 0.5rem;
    opacity: 0.4;
  }
}

/* ============================================================
   SUB PAGE — shared hero
   ============================================================ */
.page-hero {
  padding: calc(var(--header-h) + var(--sp-lg)) 0 var(--sp-lg);
  background: var(--color-bg);
}

.page-hero-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.8;
  margin-top: -0.5rem;
}

/* ============================================================
   AI SERVICES PAGE — Card Catalog
   ============================================================ */

/* ── Page Hero: タイトル上下余白を詰める ── */
.page-hero {
  padding: calc(var(--header-h) + 2.5rem) 0 2rem;
}

.ai-catalog {
  padding: 0 0 var(--sp-lg);
  background: var(--color-bg);
}

.ai-catalog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
}

/* ── Service Card: コンパクト設計（アプリカタログ型） ── */
/*
   設計思想:
   - カード高さ 160〜190px を目標に情報を最小化
   - アイコン + バッジを横並びで1行に収める
   - キャッチと説明は1〜2行に限定（line-clamp）
   - フッター行（価格 + リンク）を flex で左右に配置
   - border-left アクセントでより細身な印象に
*/
.ai-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
  border-left: 3px solid transparent;
  box-shadow: 0 1px 6px rgba(0,0,0,0.07);
  transition: border-color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
  text-decoration: none;
  color: inherit;
  /* カード高さを揃える */
  min-height: 160px;
  position: relative;
  overflow: hidden;
}

/* ── リボンバッジ（人気・おすすめ） ── */
.ai-card-ribbon {
  position: absolute;
  top: 8px;
  right: -28px;
  width: 110px;
  text-align: center;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 0;
  transform: rotate(45deg);
  z-index: 1;
  line-height: 1.3;
}
.ai-card-ribbon.popular {
  background: #E53E3E;
  color: #fff;
}
.ai-card-ribbon.recommend {
  background: var(--color-accent);
  color: #fff;
}
.ai-card-ribbon.new-service {
  background: #38A169;
  color: #fff;
}

.ai-card:hover {
  border-left-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.11);
}

/* ── Head: アイコン + バッジ ── */
.ai-card-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.ai-card-icon {
  width: 28px;
  height: 28px;
  background: var(--color-accent-dim);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ai-card-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ai-card-badge {
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  padding: 0.18em 0.55em;
  border-radius: 99px;
  white-space: nowrap;
}

/* ── サービス名 ── */
.ai-card-name {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  color: var(--color-primary);
  margin-bottom: 0.2rem;
  line-height: 1.25;
}

/* ── 1行キャッチ ── */
.ai-card-catch {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.375rem;
  /* 1行で切る */
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

/* ── 説明文: 2行clamp ── */
.ai-card-desc {
  font-size: 0.75rem;
  color: #666;
  line-height: 1.6;
  flex-grow: 1;
  /* 2行で切る */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── フッター行: 価格 + リンクを左右に ── */
.ai-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.625rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-surface);
  gap: 0.5rem;
}

.ai-card-price {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.01em;
  flex-shrink: 1;
  min-width: 0;
}

.ai-card-link {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
  /* ホバー時に矢印がスライド */
  transition: gap var(--transition-base), opacity var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.2em;
}

.ai-card:hover .ai-card-link {
  gap: 0.45em;
  opacity: 0.8;
}

/* ── Coming Soon CTA ── */
.ai-coming-soon {
  padding: var(--sp-lg) 0;
  background: var(--color-surface);
}

.ai-coming-inner {
  text-align: center;
  max-width: 540px;
  margin-inline: auto;
}

.ai-coming-label {
  font-family: var(--font-brand);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.ai-coming-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.ai-coming-desc {
  font-size: 0.875rem;
  color: #666;
  line-height: 1.8;
  margin-bottom: 1.75rem;
}

/* ── グリッド列数: スマホ1列 → タブレット2列 → PC3列 → ワイド4列 ── */
@media (min-width: 480px) {
  .ai-catalog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.875rem;
  }
}

@media (min-width: 768px) {
  .ai-catalog-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

@media (min-width: 1040px) {
  .ai-catalog-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }
}

/* ── AI page mobile ── */
@media (max-width: 767px) {
  .page-hero-desc br {
    display: none;
  }

  .ai-coming-desc br {
    display: none;
  }

  /* スマホは高さ上限を緩める */
  .ai-card {
    min-height: 140px;
  }
}

/* ============================================================
   LEGAL PAGE (tokushoho)
   ============================================================ */
.legal-page {
  padding: calc(var(--header-h) + var(--sp-lg)) 0 var(--sp-xl);
  background: var(--color-bg);
  min-height: 100vh;
}

.legal-header {
  margin-bottom: var(--sp-lg);
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  transition: opacity var(--transition-base);
}

.legal-back:hover {
  opacity: 0.7;
}

.legal-back svg {
  flex-shrink: 0;
}

.legal-table-wrap {
  max-width: 800px;
}

.legal-table-wrap .company-table th {
  width: 30%;
}

@media (max-width: 767px) {
  .legal-table-wrap .company-table th {
    width: 35%;
    font-size: 0.8125rem;
  }

  .legal-table-wrap .company-table td {
    font-size: 0.875rem;
  }
}

/* ── Legal body (利用規約・プライバシーポリシー) ── */
.legal-body {
  max-width: 800px;
  line-height: 1.85;
  color: var(--color-text);
}

.legal-body h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-accent-dim);
}

.legal-body p,
.legal-body li {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.legal-body ol,
.legal-body ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-body ul li {
  list-style: disc;
}

.legal-body ol li {
  list-style: decimal;
}

.legal-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-updated {
  font-size: 0.8125rem;
  color: #888;
  margin-bottom: 1.5rem;
}

.legal-footer-info {
  margin-top: 2.5rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  font-size: 0.875rem;
  line-height: 1.7;
}

.legal-footer-info p {
  margin-bottom: 0;
}

/* ── Footer legal links ── */
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.footer-legal-links a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.45);
  transition: color 0.28s;
}

.footer-legal-links a:hover {
  color: rgba(255,255,255,0.8);
}

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

/* Fade-in on scroll (JS adds .is-visible) */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}