/* ============================================================
   SmartAll LP — style.css
   Design: Dark theme matching smartproducts.co.jp
   Accessibility: WCAG 2.2 AA compliant
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Typography */
  --font-body:  'Noto Sans JP', 'DM Sans', sans-serif;
  --font-en:    'DM Sans', 'Noto Sans JP', sans-serif;

  /* Spacing */
  --section-py: clamp(4rem, 8vw, 7rem);
  --container-px: clamp(1.25rem, 4vw, 2rem);
  --container-max: 1200px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --duration: 0.3s;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

/* ---------- Dark Theme (default) ---------- */
:root,
[data-theme="dark"] {
  --color-bg:          #0a0a0a;
  --color-bg-alt:      #111111;
  --color-bg-card:     #161616;
  --color-border:      #2a2a2a;
  --color-border-light:#333333;

  --color-text:        #e8e8e8;  /* ~16:1 on #0a0a0a */
  --color-text-muted:  #999999;  /* ~7:1 on #0a0a0a  */
  --color-text-dim:    #777777;  /* ~5:1 on #0a0a0a — large text only */

  --color-accent:      #4a9eff;  /* ~5.5:1 on #0a0a0a */
  --color-accent-hover:#6bb3ff;
  --color-accent-dim:  rgba(74, 158, 255, 0.15);

  --color-error:       #ff6b6b;

  --header-bg:         rgba(10, 10, 10, 0.85);
  --hero-grid-color:   rgba(74, 158, 255, 0.04);
  --hero-glow-color:   rgba(74, 158, 255, 0.08);
  --floating-cta-bg:   rgba(10, 10, 10, 0.95);
  --btn-primary-text:  #000;
}

/* ---------- Light Theme ---------- */
[data-theme="light"] {
  --color-bg:          #f8f9fa;
  --color-bg-alt:      #ffffff;
  --color-bg-card:     #ffffff;
  --color-border:      #dde1e6;
  --color-border-light:#c8cdd3;

  --color-text:        #1a1a2e;  /* ~15:1 on #f8f9fa */
  --color-text-muted:  #4a5568;  /* ~7.5:1 on #f8f9fa */
  --color-text-dim:    #718096;  /* ~4.6:1 on #f8f9fa — large text only */

  --color-accent:      #2563eb;  /* ~4.6:1 on #ffffff */
  --color-accent-hover:#1d4ed8;
  --color-accent-dim:  rgba(37, 99, 235, 0.1);

  --color-error:       #dc2626;

  --header-bg:         rgba(255, 255, 255, 0.9);
  --hero-grid-color:   rgba(37, 99, 235, 0.06);
  --hero-glow-color:   rgba(37, 99, 235, 0.06);
  --floating-cta-bg:   rgba(255, 255, 255, 0.95);
  --btn-primary-text:  #ffffff;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

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

/* Focus styles — WCAG 2.2 AA */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 10000;
  padding: 0.75rem 1.5rem;
  background: var(--color-accent);
  color: var(--btn-primary-text);
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 0.2s;
}

.skip-link:focus {
  top: 1rem;
}

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

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.text-accent {
  color: var(--color-accent);
}

.sp-only  { display: none; }
.sp-hide  { display: inline; }

@media (max-width: 767px) {
  .sp-only  { display: inline; }
  .sp-hide  { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.4;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--btn-primary-text);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--btn-primary-text);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-accent-dim);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--btn-primary-text);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
}

.btn-icon {
  flex-shrink: 0;
  transition: transform var(--duration) var(--ease);
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* ---------- Section Dividers ---------- */
.section-divider {
  position: relative;
  overflow: hidden;
}

.section-divider::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(600px, 80%);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), #a855f7, var(--color-accent), transparent);
}

.section-divider::after {
  content: '';
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: min(500px, 70%);
  height: 120px;
  background: radial-gradient(ellipse at center, var(--color-accent-dim) 0%, transparent 70%);
  pointer-events: none;
}

/* ---------- Section Shared ---------- */
.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-label {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-heading {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.section-sub {
  margin-top: 1rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.section-cta {
  text-align: center;
  margin-top: clamp(2rem, 4vw, 3rem);
  position: relative;
  padding-block: 2rem;
}

.section-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 200px;
  background: radial-gradient(ellipse at center, var(--color-accent-dim) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

/* ---------- Fade In Animation ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--duration), border-color var(--duration);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header-logo img {
  height: 44px;
  width: auto;
}

/* Logo is black on transparent — invert to white for dark mode */
[data-theme="dark"] .header-logo img {
  filter: invert(1);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--duration);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
}

.nav-link--cta {
  margin-left: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: var(--color-accent);
  color: var(--btn-primary-text);
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.nav-link--cta:hover {
  background: var(--color-accent-hover);
  color: var(--btn-primary-text);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--duration), border-color var(--duration);
}

.theme-toggle:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.theme-toggle-icon {
  transition: opacity var(--duration), transform var(--duration);
}

/* Dark mode: show sun, hide moon */
[data-theme="dark"] .theme-toggle-icon--sun  { display: block; }
[data-theme="dark"] .theme-toggle-icon--moon { display: none; }

/* Light mode: show moon, hide sun */
[data-theme="light"] .theme-toggle-icon--sun  { display: none; }
[data-theme="light"] .theme-toggle-icon--moon { display: block; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--duration), opacity var(--duration);
}

.hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .hamburger { display: flex; }

  .header-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration), visibility var(--duration);
  }

  .header-nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 0.5rem;
  }

  .nav-link {
    font-size: 1.125rem;
    padding: 1rem;
  }

  .nav-link--cta {
    margin-left: 0;
    margin-top: 1rem;
    padding: 0.75rem 2rem;
  }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -20%);
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, var(--hero-glow-color) 0%, transparent 60%);
  filter: blur(60px);
}

.hero-content {
  position: relative;
  text-align: center;
  padding-block: 4rem;
}

.hero-label {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.hero-heading {
  font-size: clamp(1.75rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: clamp(0.9375rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-cta {
  margin-bottom: 1rem;
}

.hero-note {
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

/* ---------- Hero Stagger Fade-in ---------- */
.hero-stagger {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 0.7s var(--ease) forwards;
}

.hero-stagger:nth-child(1) { animation-delay: 0.1s; }
.hero-stagger:nth-child(2) { animation-delay: 0.4s; }
.hero-stagger:nth-child(3) { animation-delay: 0.7s; }
.hero-stagger:nth-child(4) { animation-delay: 1.0s; }
.hero-stagger:nth-child(5) { animation-delay: 1.2s; }

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

@media (prefers-reduced-motion: reduce) {
  .hero-stagger {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

/* ---------- Typewriter ---------- */
.typewriter-wrapper {
  display: inline;
  position: relative;
}

.typewriter-text {
  display: inline;
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 0.9em;
  background: var(--color-accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: cursorBlink 0.6s step-end infinite;
}

.typewriter-cursor.is-hidden {
  opacity: 0;
  animation: none;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .typewriter-cursor {
    animation: none;
    opacity: 0;
  }
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50%  { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* ============================================================
   PROBLEMS
   ============================================================ */
.problems {
  padding-block: var(--section-py);
  background: var(--color-bg-alt);
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (max-width: 767px) {
  .problems-grid { grid-template-columns: 1fr; }
}

.problems-col {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.problems-col-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.problems-col-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-dim);
  color: var(--color-accent);
  flex-shrink: 0;
}

.problems-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.problems-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.problems-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 107, 107, 0.15);
  color: var(--color-error);
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.problems-answer {
  text-align: center;
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  font-weight: 500;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  padding-block: var(--section-py);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  transition: transform var(--duration), box-shadow var(--duration), border-color var(--duration);
}

.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--color-accent-dim);
}

.service-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-accent-dim);
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.service-card-num {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
}

.service-card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.service-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ============================================================
   REASONS
   ============================================================ */
.reasons {
  padding-block: var(--section-py);
  background: var(--color-bg-alt);
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 767px) {
  .reasons-grid { grid-template-columns: 1fr; }
}

.reason-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  transition: transform var(--duration), border-color var(--duration), box-shadow var(--duration);
}

.reason-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-accent-dim);
}

.reason-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.reason-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent-dim);
  color: var(--color-accent);
  transition: transform var(--duration), box-shadow var(--duration);
}

.reason-card:hover .reason-icon {
  transform: scale(1.08);
  box-shadow: 0 0 20px var(--color-accent-dim);
}

.reason-num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.25;
}

.reason-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.reason-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ============================================================
   NUMBERS
   ============================================================ */
.numbers {
  padding-block: var(--section-py);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

@media (max-width: 767px) {
  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

.numbers-item {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--duration), box-shadow var(--duration);
}

.numbers-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-accent-dim);
}

.numbers-value {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.numbers-unit {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.7;
}

.numbers-label {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ============================================================
   PROCESS
   ============================================================ */
.process {
  padding-block: var(--section-py);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(12.5% + 0.75rem);
  right: calc(12.5% + 0.75rem);
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), #a855f7, var(--color-accent));
  opacity: 0.4;
}

@media (max-width: 767px) {
  .process-steps {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .process-steps::before { display: none; }
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  background: var(--color-bg);
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
  transition: transform var(--duration), box-shadow var(--duration), background var(--duration), color var(--duration);
}

.process-step:hover .process-step-num {
  transform: scale(1.1);
  background: var(--color-accent);
  color: var(--btn-primary-text);
  box-shadow: 0 0 24px var(--color-accent-dim);
}

.process-step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.process-step-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   PLAN
   ============================================================ */
.plan {
  padding-block: var(--section-py);
  background: var(--color-bg-alt);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 767px) {
  .plan-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-inline: auto;
  }
}

.plan-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  text-align: center;
  position: relative;
  transition: transform var(--duration), box-shadow var(--duration), border-color var(--duration);
}

.plan-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--color-accent-dim);
}

.plan-card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 24px var(--color-accent-dim);
}

.plan-card-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 1rem;
  background: var(--color-accent);
  color: var(--btn-primary-text);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 20px;
  white-space: nowrap;
}

.plan-card-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.plan-card-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.plan-card-target {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.plan-card-price {
  margin-bottom: 1.5rem;
}

.plan-card-price-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.plan-card-price-amount {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.plan-card-price-unit {
  font-size: 1rem;
  font-weight: 500;
}

.plan-card-price-tax {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-top: 0.25rem;
}

.plan-card-features {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
}

.plan-card-features li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.plan-card-features li:last-child {
  border-bottom: none;
}

.plan-card-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.plan-card .btn {
  width: 100%;
}

.plan-note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  margin-top: 2rem;
  line-height: 1.8;
}

/* ============================================================
   VOICE
   ============================================================ */
.voice {
  padding-block: var(--section-py);
}

.voice-coming {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--color-bg-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
}

.voice-coming-icon {
  color: var(--color-text-dim);
  margin-bottom: 1rem;
}

.voice-coming-icon svg {
  margin-inline: auto;
}

.voice-coming-text {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-dim);
  margin-bottom: 0.5rem;
}

.voice-coming-sub {
  font-size: 0.9375rem;
  color: var(--color-text-dim);
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  padding-block: var(--section-py);
  background: var(--color-bg-alt);
}

.faq-list {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--duration);
}

.faq-item[open] {
  border-color: var(--color-border-light);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  transition: color var(--duration);
}

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

.faq-question:hover {
  color: var(--color-accent);
}

.faq-toggle {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-toggle::before,
.faq-toggle::after {
  content: '';
  position: absolute;
  background: var(--color-text-muted);
  border-radius: 1px;
  transition: transform var(--duration);
}

.faq-toggle::before {
  top: 50%;
  left: 2px;
  width: 16px;
  height: 2px;
  transform: translateY(-50%);
}

.faq-toggle::after {
  top: 2px;
  left: 50%;
  width: 2px;
  height: 16px;
  transform: translateX(-50%);
}

.faq-item[open] .faq-toggle::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
}

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ============================================================
   INQUIRY FORM
   ============================================================ */
.inquiry {
  padding-block: var(--section-py);
  position: relative;
}

.inquiry::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(800px, 100%);
  height: 300px;
  background: radial-gradient(ellipse at center top, var(--color-accent-dim) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.inquiry > .container {
  position: relative;
  z-index: 1;
}

.inquiry-form {
  max-width: 680px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-fieldset {
  border: none;
}

.form-label {
  font-size: 0.9375rem;
  font-weight: 500;
}

.form-required {
  color: var(--color-error);
  font-weight: 700;
}

.form-optional {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  font-weight: 400;
  margin-left: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--duration), box-shadow var(--duration);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
  outline: none;
}

.form-input.is-error,
.form-select.is-error {
  border-color: var(--color-error);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 3rem;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  font-size: 0.8125rem;
  color: var(--color-error);
}

.form-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.75rem;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-border-light);
  border-radius: 3px;
  background: var(--color-bg-card);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--duration), background var(--duration);
}

.form-checkbox input[type="checkbox"]:checked {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.form-checkbox input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid var(--btn-primary-text);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.form-checkbox input[type="checkbox"]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.form-consent {
  padding-top: 0.5rem;
}

.form-submit {
  text-align: center;
  padding-top: 0.5rem;
}

.form-submit .btn {
  min-width: 240px;
}

.form-success {
  padding: 2rem 1rem;
  text-align: center;
}

.form-success-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.form-success-text {
  color: var(--color-text-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  padding-top: 4rem;
  padding-bottom: 2rem;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (max-width: 767px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-logo img {
  height: 36px;
  width: auto;
  margin-bottom: 1rem;
}

[data-theme="dark"] .footer-logo img {
  filter: invert(1);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.footer-address {
  font-style: normal;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  line-height: 2;
}

.footer-address a {
  color: var(--color-text-dim);
}

.footer-address a:hover {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  gap: 3rem;
}

@media (max-width: 767px) {
  .footer-links { gap: 2rem; }
}

.footer-links-title {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  transition: color var(--duration);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

/* ============================================================
   FLOATING CTA (Mobile)
   ============================================================ */
.floating-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--floating-cta-bg);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--color-border);
  z-index: 900;
  display: none;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity var(--duration), transform var(--duration);
}

.floating-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.btn-floating {
  width: 100%;
}

@media (max-width: 767px) {
  .floating-cta { display: block; }
  body { padding-bottom: 70px; }
}

/* ============================================================
   LIGHT THEME ADJUSTMENTS
   ============================================================ */
[data-theme="light"] .site-header {
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .service-card,
[data-theme="light"] .reason-card,
[data-theme="light"] .plan-card,
[data-theme="light"] .problems-col,
[data-theme="light"] .faq-item,
[data-theme="light"] .voice-coming,
[data-theme="light"] .numbers-item {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

/* Light mode: softer hover shadows */
[data-theme="light"] .service-card:hover,
[data-theme="light"] .plan-card:hover,
[data-theme="light"] .reason-card:hover,
[data-theme="light"] .numbers-item:hover {
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
}

[data-theme="light"] .plan-card--featured {
  box-shadow: 0 2px 16px rgba(37, 99, 235, 0.08);
}

[data-theme="light"] .reason-card:hover .reason-icon {
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.08);
}

[data-theme="light"] .process-step:hover .process-step-num {
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.1);
}

[data-theme="light"] .hero-scroll-line {
  background: linear-gradient(to bottom, var(--color-accent), transparent);
}