/* ===========================
   Design System — Niai LP  v3 (Light)
   =========================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+JP:wght@300;400;500;600;700;900&display=swap');

:root {
  /* Core Palette — brighter & lighter */
  --blue-dark:   #1a2744;
  --blue-mid:    #2d4a8a;
  --blue:        #3b82f6;
  --teal:        #14b8a6;
  --teal-light:  #2dd4bf;
  --indigo:      #818cf8;

  /* Gradient library — brighter tones */
  --gradient-main:          linear-gradient(135deg, #3b82f6 0%, #14b8a6 100%);
  --gradient-accent:        linear-gradient(135deg, #3b82f6 0%, #2dd4bf 100%);
  --gradient-hero-overlay:  linear-gradient(160deg, rgba(255,255,255,.15) 0%, rgba(255,255,255,.35) 40%, rgba(255,255,255,.55) 100%);
  --gradient-works-overlay: linear-gradient(135deg, rgba(240,249,255,.92) 0%, rgba(236,254,246,.88) 100%);
  --gradient-text:          linear-gradient(135deg, #3b82f6 0%, #14b8a6 100%);
  --gradient-gold:          linear-gradient(135deg, #f59e0b 0%, #fb923c 100%);

  /* Glow / shadow tokens */
  --glow-teal:   0 0 40px rgba(20,184,166,.25);
  --glow-blue:   0 0 40px rgba(59,130,246,.2);

  /* Neutrals */
  --white:    #ffffff;
  --gray-50:  #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Typography */
  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-en: 'Inter', sans-serif;

  /* Spacing */
  --section-py:     clamp(80px, 10vw, 140px);
  --container-max:  1200px;
  --container-px:   clamp(20px, 5vw, 60px);

  /* Easing */
  --ease-out:    cubic-bezier(.25, .46, .45, .94);
  --ease-bounce: cubic-bezier(.34, 1.56, .64, 1);
}

/* ===========================
   Custom scrollbar
   =========================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #3b82f6, #14b8a6);
  border-radius: 99px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-ja);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

/* ===========================
   Section Labels / Titles
   =========================== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: clamp(10px, 1vw, 11px);
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

.section-title-en {
  font-family: var(--font-en);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: var(--gray-800);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(13px, 1.2vw, 15px);
  color: var(--gray-500);
  font-weight: 400;
  line-height: 1.8;
}

/* ===========================
   Header
   =========================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: background .5s var(--ease-out), box-shadow .5s var(--ease-out), backdrop-filter .5s;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,.06), 0 4px 24px rgba(0,0,0,.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px;
}

.logo {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .06em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: opacity .3s;
}
.logo:hover { opacity: .8; }

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.75);
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: color .3s;
  position: relative;
  padding-bottom: 2px;
}

/* Switch nav link colors when scrolled */
.site-header.scrolled .nav-links a {
  color: var(--gray-500);
}
.site-header.scrolled .nav-links a:hover {
  color: var(--gray-800);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gradient-accent);
  transition: width .35s var(--ease-out);
  border-radius: 2px;
}

.nav-links a:hover { color: rgba(255,255,255,1); }
.nav-links a:hover::after { width: 100%; }

.btn-reserve {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-ja);
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  border: 1.5px solid rgba(255,255,255,.35);
  cursor: pointer;
  letter-spacing: .06em;
  transition: background .3s, border-color .3s, transform .3s var(--ease-bounce), box-shadow .3s, color .3s;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.site-header.scrolled .btn-reserve {
  color: var(--blue);
  border-color: var(--blue);
}

.btn-reserve::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity .3s;
}

.btn-reserve:hover {
  transform: translateY(-2px);
  border-color: transparent;
  box-shadow: var(--glow-teal);
  color: var(--white);
}
.btn-reserve:hover::before { opacity: 1; }
.btn-reserve span { position: relative; z-index: 1; }

/* ===========================
   Hero — Bright & Airy
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(80px, 12vh, 160px);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('images/hero-bg.png') center/cover no-repeat;
  z-index: 0;
  transform: scale(1.04);
  animation: heroZoom 18s ease-out forwards;
}

@keyframes heroZoom {
  to { transform: scale(1); }
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(15,23,42,.68) 0%, rgba(15,23,42,.42) 50%, rgba(59,130,246,.15) 100%);
}

/* Floating orbs — brighter */
.hero::before, .hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 1;
  pointer-events: none;
}
.hero::before {
  width: 500px; height: 500px;
  top: -100px; right: 10%;
  background: rgba(59,130,246,.15);
  animation: floatOrb 12s ease-in-out infinite alternate;
}
.hero::after {
  width: 350px; height: 350px;
  bottom: 5%; left: 5%;
  background: rgba(45,212,191,.12);
  animation: floatOrb 16s ease-in-out infinite alternate-reverse;
}

@keyframes floatOrb {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 0 var(--container-px);
  margin-left: clamp(20px, 8vw, 120px);
}

/* Eyebrow label in hero */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeSlideUp .8s .3s var(--ease-out) forwards;
}
.hero-eyebrow::before {
  content: '';
  width: 28px; height: 1.5px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

.hero-title {
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: .03em;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeSlideUp .9s .5s var(--ease-out) forwards;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #60a5fa 0%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(14px, 1.4vw, 16px);
  color: rgba(255,255,255,.8);
  line-height: 2;
  margin-bottom: 44px;
  max-width: 460px;
  opacity: 0;
  animation: fadeSlideUp .9s .7s var(--ease-out) forwards;
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 40px;
  background: var(--gradient-accent);
  color: var(--white);
  font-family: var(--font-ja);
  font-size: 15px;
  font-weight: 700;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  letter-spacing: .06em;
  position: relative;
  overflow: hidden;
  opacity: 0;
  animation: fadeSlideUp .9s .9s var(--ease-out) forwards;
  transition: transform .35s var(--ease-bounce), box-shadow .35s;
}

.btn-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.22) 0%, rgba(255,255,255,0) 60%);
  pointer-events: none;
}

.btn-hero:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 48px rgba(59,130,246,.35), 0 4px 12px rgba(0,0,0,.15);
}

.btn-hero svg {
  transition: transform .3s var(--ease-out);
}
.btn-hero:hover svg {
  transform: translateX(5px);
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeIn 1s 1.5s ease forwards;
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(180deg, rgba(255,255,255,.7) 0%, rgba(255,255,255,0) 100%);
  animation: scrollLine 2s 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

/* ===========================
   About — Clean & Bright
   =========================== */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 540px;
}

.about-image {
  background: url('images/about-bg.png') center/cover no-repeat;
  min-height: 420px;
  position: relative;
  overflow: hidden;
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59,130,246,.08) 0%, rgba(20,184,166,.05) 100%);
}

.about-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(48px, 6vw, 96px) clamp(40px, 5vw, 80px);
  background: var(--white);
  position: relative;
}

/* Decorative vertical accent line */
.about-content::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 3px;
  background: var(--gradient-accent);
  border-radius: 0 2px 2px 0;
}

.about-heading {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--gray-800);
  margin-bottom: 24px;
  position: relative;
}

.about-text {
  font-size: clamp(13px, 1.2vw, 15px);
  color: var(--gray-500);
  line-height: 2.1;
  max-width: 440px;
}

/* ===========================
   Services — Light Background
   =========================== */
.services {
  padding: var(--section-py) 0;
  background: var(--gray-50);
  position: relative;
  overflow: hidden;
}

/* Faint grid decoration */
.services::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.services-header {
  text-align: center;
  margin-bottom: clamp(48px, 6vw, 80px);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: clamp(36px, 3.5vw, 52px) clamp(28px, 2.5vw, 40px);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out), border-color .45s;
  cursor: default;
}

/* Top gradient bar */
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease-out);
  border-radius: 0 0 2px 2px;
}

/* Subtle glow bottom-right */
.service-card::after {
  content: '';
  position: absolute;
  bottom: -60px; right: -60px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20,184,166,.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity .45s;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 24px 64px rgba(0,0,0,.06), 0 4px 16px rgba(59,130,246,.08);
  border-color: rgba(59,130,246,.15);
}

.service-card:hover::before { transform: scaleX(1); }
.service-card:hover::after  { opacity: 1; }

.service-icon {
  width: 64px; height: 64px;
  margin: 0 auto 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(59,130,246,.08) 0%, rgba(20,184,166,.08) 100%);
  color: var(--teal);
  transition: transform .35s var(--ease-bounce), background .35s;
}

.service-card:hover .service-icon {
  transform: scale(1.12) rotate(-3deg);
  background: linear-gradient(135deg, rgba(59,130,246,.14) 0%, rgba(20,184,166,.14) 100%);
}

.service-card h3 {
  font-family: var(--font-en);
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 14px;
  letter-spacing: .02em;
}

.service-card p {
  font-size: clamp(12px, 1.1vw, 14px);
  color: var(--gray-500);
  line-height: 1.9;
}

/* ===========================
   Works — Light Theme
   =========================== */
.works {
  position: relative;
  padding: var(--section-py) 0;
  overflow: hidden;
  color: var(--gray-800);
  background: var(--white);
}

.works-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #f0f9ff 0%, #ecfdf5 50%, #eff6ff 100%);
  z-index: 0;
}

.works-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(59,130,246,.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(20,184,166,.08) 0%, transparent 60%);
}

/* Subtle dot pattern */
.works::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: radial-gradient(circle, rgba(59,130,246,.06) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.works-inner {
  position: relative;
  z-index: 2;
}

.works-header {
  margin-bottom: clamp(48px, 6vw, 80px);
}

.works-header .section-label {
  color: var(--teal);
}
.works-header .section-label::before {
  background: var(--gradient-accent);
}

.works-header .section-title-en {
  color: var(--gray-800);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -.04em;
}

.works-description {
  font-size: clamp(13px, 1.2vw, 15px);
  color: var(--gray-500);
  line-height: 2.1;
  max-width: 400px;
  margin-bottom: 48px;
}

.works-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* Glass card with light styling */
.works-card-main,
.stat-card {
  position: relative;
  border-radius: 20px;
}

.works-card-main::before,
.stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(135deg, rgba(59,130,246,.2), rgba(20,184,166,.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  pointer-events: none;
}

.works-card-main {
  grid-row: span 2;
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: clamp(36px, 3.5vw, 52px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: background .3s, box-shadow .3s;
  box-shadow: 0 4px 24px rgba(0,0,0,.04);
}

.works-card-main:hover {
  background: rgba(255,255,255,.95);
  box-shadow: 0 8px 40px rgba(59,130,246,.1);
}

.works-card-main .works-card-label {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 8px;
}

.works-card-main .works-card-title {
  font-size: clamp(14px, 1.3vw, 17px);
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: 24px;
  line-height: 1.6;
}

.works-card-main .works-card-number {
  font-family: var(--font-en);
  font-size: clamp(60px, 7.5vw, 104px);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.works-card-main .works-card-unit {
  font-family: var(--font-ja);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.works-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-card {
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: clamp(24px, 2.5vw, 36px);
  transition: background .3s, transform .3s var(--ease-out), box-shadow .3s;
  box-shadow: 0 4px 24px rgba(0,0,0,.04);
}

.stat-card:hover {
  background: rgba(255,255,255,.95);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(59,130,246,.1);
}

.stat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 2px;
}

.stat-sublabel {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: .1em;
  color: var(--gray-400);
  margin-bottom: 18px;
  text-transform: uppercase;
}

.stat-number {
  font-family: var(--font-en);
  font-size: clamp(30px, 3.8vw, 46px);
  font-weight: 900;
  letter-spacing: -.03em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-unit {
  font-size: 15px;
  font-weight: 600;
  margin-left: 4px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===========================
   CTA Section — Bright Gradient
   =========================== */
.cta-section {
  padding: clamp(100px, 12vw, 160px) 0;
  background: linear-gradient(160deg, #eff6ff 0%, #ecfdf5 50%, #f0f9ff 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Animated floating gradient blobs */
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59,130,246,.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(20,184,166,.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(129,140,248,.1) 0%, transparent 50%);
  animation: meshShift 12s ease-in-out infinite alternate;
}

@keyframes meshShift {
  from { transform: scale(1) rotate(0deg); }
  to   { transform: scale(1.1) rotate(3deg); }
}

/* Grid lines — subtle */
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,.04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 24px;
}

.cta-eyebrow::before, .cta-eyebrow::after {
  content: '';
  width: 28px; height: 1.5px;
  background: var(--gradient-accent);
  opacity: .6;
  border-radius: 2px;
}

.cta-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  color: var(--gray-800);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: .02em;
}

.cta-sub {
  font-size: clamp(13px, 1.3vw, 15px);
  color: var(--gray-500);
  margin-bottom: 48px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.9;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 22px 60px;
  background: var(--gradient-accent);
  color: var(--white);
  font-family: var(--font-ja);
  font-size: 16px;
  font-weight: 700;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  letter-spacing: .06em;
  position: relative;
  overflow: hidden;
  transition: transform .35s var(--ease-bounce), box-shadow .35s;
}

.btn-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.22) 0%, transparent 60%);
  pointer-events: none;
}

.btn-cta:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 20px 60px rgba(59,130,246,.3), 0 6px 20px rgba(0,0,0,.1);
}

.btn-cta svg {
  transition: transform .3s var(--ease-out);
}
.btn-cta:hover svg {
  transform: translateX(6px);
}

/* ===========================
   Footer — Light
   =========================== */
.site-footer {
  background: var(--gray-50);
  color: var(--gray-500);
  padding: 72px 0 36px;
  border-top: 1px solid var(--gray-200);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 20px;
  display: block;
}

.footer-brand p {
  font-size: 12px;
  line-height: 1.9;
  color: var(--gray-400);
  max-width: 260px;
}

.footer-col h4 {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 20px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--gray-400);
  padding: 5px 0;
  transition: color .25s, transform .25s;
}

.footer-col a:hover {
  color: var(--gray-800);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid var(--gray-200);
  padding-top: 28px;
  text-align: center;
  font-family: var(--font-en);
  font-size: 11px;
  color: var(--gray-400);
  letter-spacing: .06em;
}

/* ===========================
   Animations (Scroll Reveal)
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 968px) {
  .about { grid-template-columns: 1fr; }
  .about-image { min-height: 300px; }
  .about-content::before { left: 20px; }
  .services-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .works-grid { grid-template-columns: 1fr; }
  .works-card-main { grid-row: span 1; }
  .works-stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}

@media (max-width: 600px) {
  .header-inner { padding: 0 20px; height: 62px; }
  .works-stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .btn-cta { padding: 18px 40px; font-size: 14px; }
  .btn-hero { padding: 16px 30px; font-size: 14px; }
}