/* ==========================================================================
   Ai-craft — style.css
   Geometric Precision Design System
   ========================================================================== */

/* ---------- Google Fonts ---------- */
/* Moved to <link> in HTML for faster loading */

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

:root {
  --navy-deep: #0a0f1c;
  --navy: #1a2744;
  --blue: #3b82f6;
  --gray-900: #111827;
  --gray-600: #6b7280;
  --gray-200: #e5e7eb;
  --gray-50: #f9fafb;
  --white: #ffffff;
  --max-width: 1080px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
}

body {
  font-family: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #444;
  background: var(--white);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

/* ---------- Utility ---------- */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section--gray {
  background: var(--gray-50);
}

.section--navy {
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

/* Dot grid pattern for dark sections */
.section--navy::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.section-label {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-bottom: 16px;
}

.section-label--center {
  text-align: center;
}

.section-label--light {
  color: rgba(255,255,255,0.5);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.4;
  margin-bottom: 20px;
  letter-spacing: 0.06em;
}

.section-title--center {
  text-align: center;
}

.section-title--white {
  color: var(--white);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--gray-600);
  max-width: 540px;
  line-height: 1.9;
}

.section-subtitle--center {
  text-align: center;
  margin: 0 auto;
}

/* Section divider — thin centered line */
.section-divider {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--gray-200);
  margin: 0 auto;
}

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: -80px;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: top 0.8s ease, padding var(--transition), background var(--transition);
}

.header.is-entered {
  top: 0;
}

.header.is-scrolled {
  padding: 12px 0;
  background: rgba(10, 15, 28, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  font-family: 'Inter', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__nav a {
  font-size: 0.85rem;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.04em;
  transition: color var(--transition);
}

.header__nav a:hover,
.header__nav a.is-current {
  color: var(--white);
}

.header__cta {
  border: 1px solid rgba(255,255,255,0.3);
  padding: 8px 20px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.header__cta:hover {
  background: var(--white);
  border-color: var(--white);
  color: var(--navy-deep) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--navy-deep) 0%, #0f1a2e 40%, var(--navy) 100%);
  position: relative;
  overflow: hidden;
}

/* Animated gradient overlay */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 15% 85%, rgba(59,130,246,0.15) 0%, transparent 50%),
    radial-gradient(ellipse 60% 80% at 85% 15%, rgba(59,130,246,0.12) 0%, transparent 45%),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(59,130,246,0.06) 0%, transparent 60%);
  animation: gradientShift 10s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes gradientShift {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* Animated dot grid + wireframe */
.hero-grid {
  position: absolute;
  inset: -50%;
  width: 200%;
  height: 200%;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.12) 1.5px, transparent 1.5px),
    linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
  background-size: 28px 28px, 56px 56px, 56px 56px;
  pointer-events: none;
}

@keyframes gridDrift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-28px, -16px); }
  50% { transform: translate(-14px, -32px); }
  75% { transform: translate(16px, -14px); }
  100% { transform: translate(0, 0); }
}

/* Floating geometric shapes */
.hero-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-shape {
  position: absolute;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

/* Large rotating square - top right */
.hero-shape--1 {
  width: 320px;
  height: 320px;
  top: 5%;
  right: 3%;
  border: 1.5px solid rgba(59,130,246,0.25);
  animation: float1 14s infinite;
}

/* Circle with glow - bottom left */
.hero-shape--2 {
  width: 220px;
  height: 220px;
  bottom: 10%;
  left: 3%;
  border-radius: 50%;
  border: 1.5px solid rgba(59,130,246,0.2);
  box-shadow: 0 0 60px rgba(59,130,246,0.1);
  animation: float2 18s infinite;
}

/* Small square - center left */
.hero-shape--3 {
  width: 80px;
  height: 80px;
  top: 30%;
  left: 12%;
  border: 1.5px solid rgba(255,255,255,0.15);
  animation: float3 10s infinite;
}

/* Large circle - bottom right */
.hero-shape--4 {
  width: 450px;
  height: 450px;
  bottom: -120px;
  right: -100px;
  border-radius: 50%;
  border: 1.5px solid rgba(59,130,246,0.12);
  box-shadow: 0 0 100px rgba(59,130,246,0.06);
  animation: float4 22s infinite;
}

/* Medium square rotated - top left */
.hero-shape--5 {
  width: 180px;
  height: 180px;
  top: 8%;
  left: 25%;
  border: 1px solid rgba(255,255,255,0.1);
  animation: float5 16s infinite;
}

/* Connecting lines - diagonal */
.hero-shapes::before {
  content: "";
  position: absolute;
  width: 1.5px;
  height: 160%;
  top: -30%;
  left: 28%;
  background: linear-gradient(to bottom, transparent 0%, rgba(59,130,246,0.18) 25%, rgba(59,130,246,0.18) 75%, transparent 100%);
  transform: rotate(25deg);
  animation: lineFloat 12s ease-in-out infinite;
}

.hero-shapes::after {
  content: "";
  position: absolute;
  width: 1.5px;
  height: 140%;
  top: -20%;
  right: 22%;
  background: linear-gradient(to bottom, transparent 0%, rgba(255,255,255,0.1) 30%, rgba(255,255,255,0.1) 70%, transparent 100%);
  transform: rotate(-22deg);
  animation: lineFloat2 14s ease-in-out infinite;
}

@keyframes float1 {
  0%, 100% { transform: rotate(45deg) translate(0, 0); }
  25% { transform: rotate(52deg) translate(20px, -25px); }
  50% { transform: rotate(40deg) translate(-5px, 15px); }
  75% { transform: rotate(48deg) translate(10px, -10px); }
}

@keyframes float2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(25px, -20px) scale(1.1); }
  66% { transform: translate(-10px, 10px) scale(0.95); }
}

@keyframes float3 {
  0%, 100% { transform: rotate(0deg) translate(0, 0); }
  25% { transform: rotate(45deg) translate(-15px, 18px); }
  50% { transform: rotate(90deg) translate(5px, -8px); }
  75% { transform: rotate(135deg) translate(10px, 12px); }
}

@keyframes float4 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, -30px) scale(1.06); }
}

@keyframes float5 {
  0%, 100% { transform: rotate(15deg) translate(0, 0); }
  25% { transform: rotate(30deg) translate(20px, 15px); }
  50% { transform: rotate(5deg) translate(-10px, -15px); }
  75% { transform: rotate(22deg) translate(8px, 5px); }
}

@keyframes lineFloat {
  0%, 100% { transform: rotate(25deg) translateX(0); opacity: 0.8; }
  50% { transform: rotate(28deg) translateX(15px); opacity: 1; }
}

@keyframes lineFloat2 {
  0%, 100% { transform: rotate(-22deg) translateX(0); opacity: 0.7; }
  50% { transform: rotate(-19deg) translateX(-12px); opacity: 1; }
}

/* Hero fade-in from dark */
.hero .hero-grid,
.hero .hero-shapes,
.hero .hero__inner {
  opacity: 0;
  transition: opacity 2s ease;
}

.hero.is-visible .hero-grid,
.hero.is-visible .hero-shapes,
.hero.is-visible .hero__inner {
  opacity: 1;
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 160px 0 120px;
  width: 100%;
}

.hero__catch {
  font-size: 3.4rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-shadow: 0 2px 40px rgba(0,0,0,0.3);
}

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

/* Hero entrance animations */
.hero-grid {
  animation: gridDrift 18s linear infinite;
}

.hero-shapes {
}

.hero-shapes::before,
.hero-shapes::after {
}

@keyframes heroElementIn {
  to { opacity: 1; }
}

/* Ghost button (used in CTA sections) */
.btn--ghost {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.4);
  color: var(--white);
  padding: 14px 40px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn--ghost:hover {
  background: var(--white);
  border-color: var(--white);
  color: var(--navy-deep);
}

/* ---------- Geometric Shapes (CSS only) ---------- */

/* HP: Square with diagonal line (grid) */
.geo-shape--grid {
  width: 40px;
  height: 40px;
  position: relative;
}

.geo-shape--grid::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--navy);
}

.geo-shape--grid::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56.57px; /* 40 * sqrt(2) */
  height: 0;
  border-top: 1.5px solid var(--navy);
  transform-origin: top left;
  transform: rotate(45deg);
}

/* AI: Hexagon (neural network) */
.geo-shape--hex {
  width: 40px;
  height: 23px;
  position: relative;
  margin: 9px 0;
}

.geo-shape--hex::before,
.geo-shape--hex::after {
  content: "";
  position: absolute;
  left: 0;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
}

.geo-shape--hex::before {
  top: -9px;
  border-bottom: 9px solid transparent;
}

.geo-shape--hex::after {
  bottom: -9px;
  border-top: 9px solid transparent;
}

/* Hexagon via clip-path (cleaner stroke approach) */
.geo-shape--hexagon {
  width: 40px;
  height: 44px;
  position: relative;
}

.geo-shape--hexagon::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--navy);
}

.geo-shape--hexagon::after {
  content: "";
  position: absolute;
  inset: 1.5px;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--white);
}

.card:hover .geo-shape--hexagon::before {
  background: var(--blue);
}

/* EC: Three overlapping circles (channel integration) */
.geo-shape--circles {
  width: 48px;
  height: 36px;
  position: relative;
}

.geo-shape--circles span {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--navy);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
}

.geo-shape--circles span:nth-child(1) { left: 0; }
.geo-shape--circles span:nth-child(2) { left: 13px; }
.geo-shape--circles span:nth-child(3) { left: 26px; }

.card:hover .geo-shape--circles span {
  border-color: var(--blue);
}

/* SNS: Equilateral triangle (growth/expansion) */
.geo-shape--triangle {
  width: 36px;
  height: 32px;
  position: relative;
}

.geo-shape--triangle::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  background: var(--navy);
}

.geo-shape--triangle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 0;
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  background: var(--white);
}

.card:hover .geo-shape--triangle::before {
  background: var(--blue);
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 3px;
  padding: 36px 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  border-color: var(--gray-200);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.card__shape {
  margin-bottom: 24px;
  height: 44px;
  display: flex;
  align-items: center;
}

.card__number {
  font-family: 'Inter', monospace;
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--gray-600);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.card__text {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 20px;
}

.card__link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.04em;
  transition: opacity var(--transition);
}

.card__link:hover {
  opacity: 0.7;
}

/* ---------- Reasons (Why Choose Us) ---------- */
.reasons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.reason {
  text-align: center;
}

.reason__num {
  font-family: 'Inter', monospace;
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--gray-200);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

/* Small geometric shapes for reasons */
.reason__shape {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.reason__shape .geo-mini {
  width: 28px;
  height: 28px;
  position: relative;
}

/* Reason 1: small diamond */
.geo-mini--diamond::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid var(--gray-600);
  transform: rotate(45deg);
}

/* Reason 2: small circle */
.geo-mini--circle::before {
  content: "";
  position: absolute;
  inset: 2px;
  border: 1px solid var(--gray-600);
  border-radius: 50%;
}

/* Reason 3: small square */
.geo-mini--square::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid var(--gray-600);
}

.reason__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

.reason__text {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.8;
}

/* ---------- Numbers (Track Record) ---------- */
.numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}

.numbers__item {
  text-align: center;
}

.numbers__value {
  font-family: 'Inter', monospace;
  font-size: 3.2rem;
  font-weight: 300;
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.numbers__label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
}

/* ---------- Flow (Timeline) ---------- */
.flow {
  display: flex;
  align-items: flex-start;
  position: relative;
}

.flow__step {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 16px;
}

/* Connecting line between steps */
.flow__step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 24px;
  right: 0;
  width: 50%;
  height: 1px;
  background: var(--gray-200);
}

.flow__step:not(:first-child)::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 0;
  width: 50%;
  height: 1px;
  background: var(--gray-200);
}

.flow__num {
  font-family: 'Inter', monospace;
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--gray-200);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.flow__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
  letter-spacing: 0.06em;
}

.flow__text {
  font-size: 0.82rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 64px;
  align-items: start;
}

.about__label {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-bottom: 16px;
}

.about__heading {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.about__desc {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 24px;
}

.about__list-item {
  font-size: 0.9rem;
  color: #444;
  line-height: 2;
  padding-left: 0;
}

.about__list-item::before {
  content: none;
}

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 100%);
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.cta__heading {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta__sub {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.cta .btn--ghost {
  position: relative;
  z-index: 1;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--navy-deep);
  padding: 48px 0;
  color: rgba(255,255,255,0.5);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer__logo {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
}

.footer__nav {
  display: flex;
  gap: 24px;
}

.footer__nav a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

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

.footer__email {
  font-size: 0.8rem;
}

.footer__email a {
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

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

.footer__copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.3);
  font-family: 'Inter', sans-serif;
}

/* ---------- Page Header ---------- */
.page-header {
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 100%);
  padding: 160px 0 80px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.page-header__label {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.page-header__title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.06em;
  position: relative;
  z-index: 1;
}

/* ---------- Service Detail (Rich Layout) ---------- */
.svc-section {
  padding: 100px 0;
}

.svc-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.svc-num {
  font-family: 'Inter', sans-serif;
  font-size: 3.5rem;
  font-weight: 200;
  color: var(--gray-200);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.svc-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}

.svc-lead {
  font-size: 0.92rem;
  color: #555;
  line-height: 2;
}

.svc-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-bottom: 40px;
}

.svc-feature {
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
}

.svc-feature:first-child {
  border-top: 1px solid var(--gray-200);
}

.svc-feature__title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.svc-feature__text {
  font-size: 0.82rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.svc-for {
  background: var(--gray-50);
  border-left: 2px solid var(--blue);
  padding: 24px 28px;
}

.svc-for__title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.svc-for__list {
  list-style: none;
  padding: 0;
}

.svc-for__list li {
  font-size: 0.85rem;
  color: #555;
  line-height: 2;
  padding-left: 1.2em;
  position: relative;
}

.svc-for__list li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  color: var(--gray-600);
}

@media (max-width: 900px) {
  .svc-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .svc-section {
    padding: 64px 0;
  }

  .svc-num {
    font-size: 2.5rem;
  }

  .svc-title {
    font-size: 1.3rem;
  }
}

/* ---------- Works ---------- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.work-card {
  border: 1px solid var(--gray-200);
  border-radius: 3px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.work-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.work-card__thumb {
  width: 100%;
  height: 200px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}

.work-card__thumb::after {
  content: "Preview";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-600);
}

.work-card__body {
  padding: 24px;
}

.work-card__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.work-card__text {
  font-size: 0.82rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 16px;
}

.work-card__link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--blue);
  transition: opacity var(--transition);
}

.work-card__link:hover {
  opacity: 0.7;
}

/* Works text list */
.works-text {
  margin-top: 32px;
}

.works-text__list li {
  font-size: 0.9rem;
  color: #444;
  line-height: 2;
  padding-left: 1.2em;
  position: relative;
}

.works-text__list li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  color: var(--gray-600);
}

/* ---------- Contact ---------- */
.contact-examples {
  max-width: 560px;
  margin: 0 auto 56px;
}

.contact-examples__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  text-align: center;
}

.contact-examples__list li {
  font-size: 0.9rem;
  color: #444;
  line-height: 2;
  padding-left: 1.2em;
  position: relative;
}

.contact-examples__list li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  color: var(--gray-600);
}

/* Form */
.form {
  max-width: 560px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: 28px;
}

.form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-900);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.form__label .required {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--blue);
  margin-left: 8px;
  letter-spacing: 0.06em;
}

.form__label .optional {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--gray-600);
  margin-left: 8px;
  letter-spacing: 0.06em;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--gray-900);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 2px;
  transition: border-color var(--transition);
  outline: none;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--blue);
}

.form__textarea {
  min-height: 160px;
  resize: vertical;
  line-height: 1.7;
}

.form__note {
  font-size: 0.82rem;
  color: var(--gray-600);
  margin-bottom: 24px;
  text-align: center;
}

.form__submit {
  margin-top: 8px;
  text-align: center;
}

.form__submit .btn--ghost {
  background: none;
  cursor: pointer;
  font-family: inherit;
  border: 1px solid var(--navy);
  color: var(--navy);
  padding: 14px 48px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background var(--transition), color var(--transition);
}

.form__submit .btn--ghost:hover {
  background: var(--navy);
  color: var(--white);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .reasons {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .numbers {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .flow {
    flex-direction: column;
    gap: 32px;
  }

  .flow__step:not(:last-child)::after,
  .flow__step:not(:first-child)::before {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .hero__catch {
    font-size: 2.4rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .cta__heading {
    font-size: 1.3rem;
  }
}

@media (max-width: 640px) {
  /* Mobile navigation */
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--navy-deep);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    transition: right var(--transition);
    z-index: 999;
  }

  .header__nav.is-open {
    right: 0;
  }

  .header__nav a {
    font-size: 1rem;
    text-align: center;
  }

  .header__cta {
    padding: 10px 24px;
  }

  .hamburger {
    display: flex;
    z-index: 1001;
  }

  /* Hero */
  .hero__catch {
    font-size: 1.6rem;
    letter-spacing: 0.04em;
    padding: 0 4%;
  }

  .hero-shape--1 { width: 140px; height: 140px; }
  .hero-shape--2 { width: 100px; height: 100px; }
  .hero-shape--4 { width: 200px; height: 200px; }
  .hero-shape--5 { display: none; }

  /* Sections */
  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.3rem;
    margin-bottom: 16px;
  }

  .section-subtitle {
    font-size: 0.85rem;
  }

  /* Cards */
  .cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card {
    padding: 28px 24px;
  }

  /* Numbers */
  .numbers__value {
    font-size: 2.2rem;
  }

  /* Flow */
  .flow__num {
    font-size: 1.6rem;
  }

  /* About */
  .about__heading {
    font-size: 1.3rem;
  }

  /* Works */
  .works-grid {
    grid-template-columns: 1fr;
  }

  .work-card__thumb {
    height: 160px;
  }

  /* Page header */
  .page-header {
    padding: 100px 0 48px;
  }

  .page-header__title {
    font-size: 1.5rem;
  }

  /* CTA */
  .cta {
    padding: 64px 0;
  }

  .cta__heading {
    font-size: 1.2rem;
  }

  .cta__sub {
    font-size: 0.82rem;
  }

  /* Contact */
  .contact-examples {
    margin-bottom: 40px;
  }

  .form__input,
  .form__textarea {
    font-size: 16px; /* prevent iOS zoom on focus */
  }

  /* Footer */
  .footer__nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}