/* =============================================
   Connect Spread PJ — Main Stylesheet
   Design: Minimal, Dark, Luxury
   ============================================= */

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

:root {
  /* Color Palette */
  --color-bg:           #0e0e0e;
  --color-surface:      #141414;
  --color-surface-alt:  #1a1a1a;
  --color-border:       #252525;
  --color-border-light: #2e2e2e;

  --color-text-primary: #e8e8e4;
  --color-text-secondary: #8a8a84;
  --color-text-muted:   #555550;
  --color-accent:       #c8c0a8;   /* warm off-white accent */
  --color-accent-dark:  #9a9282;
  --color-cyan:         #00ddfa;   /* brand cyan accent */
  --color-cyan-dim:     rgba(0, 221, 250, 0.12);

  /* Typography */
  --font-serif:    'Noto Serif JP', 'Cormorant Garamond', Georgia, serif;
  --font-sans:     'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-ja:       'Noto Serif JP', 'Hiragino Mincho ProN', serif;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  7rem;
  --space-2xl: 11rem;

  /* Layout */
  --container-max:   1200px;
  --container-pad:   clamp(1.5rem, 5vw, 5rem);
  --section-pad-v:   clamp(5rem, 10vw, 10rem);

  /* Transitions */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast:    0.3s;
  --dur-med:     0.6s;
  --dur-slow:    1s;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

/* ─── Scroll Reveal Animations ─────────────── */
.reveal-fade {
  opacity: 0;
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.reveal-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.revealed.reveal-fade,
.revealed.reveal-up {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Layout Utilities ──────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding-top: var(--section-pad-v);
  padding-bottom: var(--section-pad-v);
}

.section-header {
  margin-bottom: clamp(3rem, 6vw, 6rem);
}

.section-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  line-height: 1.15;
}

/* ─── Navigation ────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 0;
  background: #0e0e0e;
  transition: padding var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
}

.navbar.scrolled {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-abbr {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text-primary);
}

.nav-logo-bg {
  display: block;
  line-height: 0;
}

.nav-logo-img {
  height: 44px;
  width: auto;
  display: block;
  object-fit: contain;
}

.footer-logo-img {
  height: 50px;
  width: auto;
  display: block;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.nav-link {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--dur-fast) ease;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--dur-med) var(--ease-out);
}

.nav-link:hover {
  color: var(--color-text-primary);
}

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

.nav-link--cta {
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
  padding: 0.5rem 1.25rem;
  letter-spacing: 0.1em;
  transition: border-color var(--dur-fast) ease,
              color var(--dur-fast) ease,
              background var(--dur-fast) ease;
}

.nav-link--cta::after { display: none; }

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

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.toggle-line {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-text-primary);
  transition: transform var(--dur-fast) ease, opacity var(--dur-fast) ease;
  transform-origin: center;
}

.nav-toggle.is-open .toggle-line:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle.is-open .toggle-line:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ─── Hero Section ──────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 0 var(--container-pad);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.6;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(40, 38, 34, 0.35) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 90% 80%, rgba(25, 25, 22, 0.5) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  padding-top: 6rem;
}

.hero-label {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
}

.hero-headline {
  font-family: var(--font-ja);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 200;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.hero-headline__line {
  display: block;
}

.hero-headline__line--indent {
  padding-left: clamp(2rem, 5vw, 6rem);
}

.hero-services {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.hero-service {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.hero-service-sep {
  font-size: 0.65rem;
}

.hero-services--delay {
  --delay: 0.5s;
}

.hero-service-sep {
  color: var(--color-cyan);
  opacity: 0.7;
}

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  left: var(--container-pad);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1;
}

.hero-scroll__text {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-scroll__line {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-cyan);
  transform-origin: left center;
  animation: lineGrow 2s var(--ease-out) infinite;
}

@keyframes lineGrow {
  0%   { transform: scaleX(0.2); opacity: 0.4; }
  50%  { transform: scaleX(1);   opacity: 1; }
  100% { transform: scaleX(0.2); opacity: 0.4; }
}

.hero-corner-text {
  position: absolute;
  bottom: 3rem;
  right: var(--container-pad);
  z-index: 1;
}

.hero-corner-text span {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  writing-mode: vertical-rl;
}

/* ─── Concept Section ───────────────────────── */
.concept {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.concept-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 8rem);
  align-items: center;
}

.concept-body {
  font-family: var(--font-ja);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  font-weight: 300;
  line-height: 2;
  color: var(--color-text-primary);
  margin-bottom: 2rem;
}

.concept-body--light {
  color: var(--color-text-secondary);
}

.concept-visual {
  aspect-ratio: 4 / 5;
  max-height: 480px;
}

.concept-visual__inner {
  position: relative;
  width: 100%;
  height: 100%;
}

.concept-visual__block {
  position: absolute;
  border: 1px solid var(--color-border-light);
}

.concept-visual__block--1 {
  top: 0;
  left: 0;
  right: 20%;
  bottom: 15%;
  background: var(--color-surface-alt);
}

.concept-visual__block--2 {
  top: 20%;
  left: 15%;
  right: 0;
  bottom: 0;
  background: rgba(30, 28, 26, 0.8);
}

.concept-visual__line {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1px;
  height: 60%;
  background: var(--color-border-light);
  opacity: 0.5;
}

/* ─── Services Section ──────────────────────── */
.services {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.service-card {
  position: relative;
  background: var(--color-bg);
  padding: clamp(2rem, 4vw, 3.5rem);
  overflow: hidden;
  transition: background var(--dur-fast) ease;
}

.service-card:hover {
  background: var(--color-surface);
}

.service-card__number {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
}

.service-card__title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: 1.25rem;
}

.service-card__body {
  font-family: var(--font-ja);
  font-size: 0.82rem;
  line-height: 2;
  color: var(--color-text-secondary);
  font-weight: 300;
}

.service-card__accent {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-cyan) 0%, transparent 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-med) var(--ease-out);
}

.service-card:hover .service-card__accent {
  transform: scaleX(1);
}

/* ─── Works Section ─────────────────────────── */
.works {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.works .container {
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.works-list {
  border-top: 1px solid var(--color-border);
}

.work-item {
  border-bottom: 1px solid var(--color-border);
  transition: background var(--dur-fast) ease;
}

.work-item:hover {
  background: var(--color-surface-alt);
}

.work-item__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: clamp(2.5rem, 5vw, 4rem) var(--container-pad);
  display: grid;
  grid-template-columns: 160px 1fr minmax(320px, 420px);
  gap: clamp(2rem, 4vw, 5rem);
  align-items: center;
  position: relative;
  overflow: hidden;
}

.work-item__meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.work-item__num {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
}

.work-item__tag {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cyan);
  border: 1px solid rgba(0, 221, 250, 0.3);
  display: inline-block;
  padding: 0.3rem 0.6rem;
}

.work-item__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.work-item__desc {
  font-family: var(--font-ja);
  font-size: 0.82rem;
  line-height: 2;
  color: var(--color-text-secondary);
  font-weight: 300;
  max-width: 480px;
}

.work-item__visual {
  width: 100%;
  flex-shrink: 0;
  overflow: hidden;
}

/* PC: body内のSP用画像は非表示 */
.work-item__visual--sp {
  display: none;
}

/* PC: グリッド右端のPC用画像を表示 */
.work-item__visual--pc {
  display: block;
}

.work-item__bg {
  width: 100%;
  height: 100%;
  transition: transform var(--dur-med) var(--ease-out);
}

.work-item:hover .work-item__bg {
  transform: scale(1.05);
}

.work-item__img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--dur-med) var(--ease-out);
}

.work-item:hover .work-item__img {
  transform: scale(1.02);
}

.work-item__bg--1 {
  background: linear-gradient(135deg, #1e1e1e 0%, #2a2826 50%, #1a1a18 100%);
  border: 1px solid var(--color-border-light);
}

.work-item__bg--2 {
  background: linear-gradient(135deg, #1c1c1c 0%, #262420 50%, #181816 100%);
  border: 1px solid var(--color-border-light);
}

.work-item__bg--3 {
  background: linear-gradient(135deg, #1a1a1a 0%, #242220 50%, #161614 100%);
  border: 1px solid var(--color-border-light);
}

/* ─── How We Work / Process ─────────────────── */
.process {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.process-step {
  background: var(--color-bg);
  padding: clamp(2.5rem, 5vw, 4rem);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.process-step__num {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

.process-step__en {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 300;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.process-step__ja {
  font-family: var(--font-ja);
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
  font-weight: 300;
}

.process-step__arrow {
  margin-top: auto;
  padding-top: 2rem;
  color: var(--color-text-muted);
}

.process-step__arrow--hidden {
  visibility: hidden;
}

/* ─── CTA Section ───────────────────────────── */
.cta-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.cta-inner {
  max-width: 680px;
}

.cta-sub {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.cta-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 2rem;
}

.cta-body {
  font-family: var(--font-ja);
  font-size: 0.9rem;
  line-height: 2.1;
  color: var(--color-text-secondary);
  font-weight: 300;
  margin-bottom: 3.5rem;
}

.sp-br { display: none; }

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
  border: 1px solid var(--color-border-light);
  padding: 1.1rem 2rem;
  transition: background var(--dur-fast) ease,
              border-color var(--dur-fast) ease,
              color var(--dur-fast) ease;
}

.cta-btn__text {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.cta-btn__arrow {
  color: var(--color-text-secondary);
  transition: transform var(--dur-med) var(--ease-out),
              color var(--dur-fast) ease;
}

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

.cta-btn:hover .cta-btn__text {
  color: var(--color-bg);
}

.cta-btn:hover .cta-btn__arrow {
  color: var(--color-bg);
  transform: translateX(6px);
}

/* ─── Contact Section ───────────────────────── */
.contact {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  margin-bottom: clamp(4rem, 7vw, 7rem);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: clamp(2rem, 3.5vw, 2.5rem);
  background: var(--color-bg);
  cursor: pointer;
  transition: background var(--dur-fast) ease;
  position: relative;
}

.contact-card:hover {
  background: var(--color-surface);
}

.contact-card__icon {
  color: var(--color-text-secondary);
  flex-shrink: 0;
  transition: color var(--dur-fast) ease;
}

.contact-card:hover .contact-card__icon {
  color: var(--color-text-primary);
}

.contact-card__label {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-text-primary);
  flex: 1;
}

.contact-card__arrow {
  font-size: 1rem;
  color: var(--color-text-muted);
  transition: transform var(--dur-med) var(--ease-out),
              color var(--dur-fast) ease;
}

.contact-card:hover .contact-card__arrow {
  transform: translate(3px, -3px);
  color: var(--color-text-primary);
}

/* Contact Form */
.contact-form-wrap {
  max-width: 680px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-bottom: 2rem;
  margin-bottom: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.form-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.form-input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border-light);
  border-radius: 0;
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 300;
  padding: 0.75rem 0;
  outline: none;
  transition: border-color var(--dur-fast) ease;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--color-text-muted);
  font-weight: 300;
}

.form-input:focus {
  border-bottom-color: var(--color-cyan);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0L5 6L10 0' stroke='%23555550' stroke-width='1' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
  padding-right: 1.5rem;
}

.form-select option {
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.8;
}

.form-submit-wrap {
  margin-top: 1rem;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  background: none;
  border: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
  cursor: pointer;
  padding: 1rem 1.75rem;
  transition: background var(--dur-fast) ease,
              border-color var(--dur-fast) ease,
              color var(--dur-fast) ease;
}

.form-submit__text {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.form-submit__arrow {
  font-size: 1rem;
  transition: transform var(--dur-med) var(--ease-out);
}

.form-submit:hover {
  background: var(--color-text-primary);
  border-color: var(--color-text-primary);
  color: var(--color-bg);
}

.form-submit:hover .form-submit__arrow {
  transform: translateX(4px);
}

.form-success {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border-light);
  background: var(--color-surface);
}

.form-success p {
  font-family: var(--font-ja);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ─── Footer ────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 0;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-logo-bg {
  display: block;
  background: #0e0e0e;
  padding: 2px 6px;
  line-height: 0;
}

.footer-logo {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text-primary);
}

.footer-tagline {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.footer-copy small {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* ─── Responsive ────────────────────────────── */
@media (max-width: 960px) {
  .nav-logo-img {
    height: 26px;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 4rem 2.5rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease-out);
    z-index: 99;
  }

  .nav-links.is-open {
    transform: translateX(0);
  }

  .nav-link {
    font-size: 0.8rem;
    letter-spacing: 0.15em;
  }

  .nav-link--cta {
    margin-top: 1rem;
  }

  .nav-toggle {
    display: flex;
    z-index: 101;
    position: relative;
  }

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

  .concept-layout {
    grid-template-columns: 1fr;
  }

  .concept-visual {
    aspect-ratio: 16 / 9;
    max-height: 200px;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-step__arrow {
    display: none;
  }

  .work-item__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* スマホ: PC用画像（グリッド右端）を非表示 */
  .work-item__visual--pc {
    display: none;
  }

  /* スマホ: body内のSP用画像を表示（タイトルと説明文の間） */
  .work-item__visual--sp {
    display: block;
    width: 100%;
    height: auto;
    margin: 1rem 0;
  }

  .work-item__meta {
    flex-direction: row;
    align-items: center;
  }

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

@media (max-width: 640px) {
  :root {
    --section-pad-v: clamp(4rem, 12vw, 7rem);
  }

  .hero-headline {
    font-size: clamp(2.6rem, 10vw, 4rem);
  }

  .hero-headline__line--indent {
    padding-left: 1.5rem;
  }

  .hero-services {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .hero-service-sep {
    display: none;
  }

  .hero-corner-text {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .footer-brand {
    flex-direction: column;
    gap: 0.5rem;
  }

  .sp-br { display: block; }

  .contact-form-wrap {
    max-width: 100%;
  }
}

/* ─── Custom Scrollbar ──────────────────────── */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ─── Selection ─────────────────────────────── */
::selection {
  background: rgba(200, 192, 168, 0.2);
  color: var(--color-text-primary);
}

/* ─── Focus Visible ─────────────────────────── */
:focus-visible {
  outline: 1px solid var(--color-cyan);
  outline-offset: 4px;
}

/* ─── Cyan accent line (section-label) ──────── */
.section-label {
  position: relative;
  padding-left: 1.2rem;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 1px;
  background: var(--color-cyan);
}

/* ─── Process step En title cyan glow ───────── */
.process-step__en {
  position: relative;
  display: inline-block;
}

.process-step:hover .process-step__en {
  color: var(--color-text-primary);
  text-shadow: 0 0 40px rgba(0, 221, 250, 0.15);
}

/* ─── CTA btn cyan hover line ───────────────── */
.cta-btn {
  position: relative;
  overflow: hidden;
}

.cta-btn::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-cyan);
  transition: width var(--dur-med) var(--ease-out);
}

.cta-btn:hover::before {
  width: 100%;
}