/* =========================================================
   Appligate Web System — Stylesheet (v2)
   Modern minimalism × Bold sans-serif typography
   ========================================================= */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #eef9f3;
  --color-surface: #ffffff;
  --color-ink: #0f2018;
  --color-ink-soft: #43564d;
  --color-ink-mute: #80968a;
  --color-line: #d9ece2;
  --color-line-soft: #e9f5ef;
  --color-accent: #0d9f6e;
  --color-accent-bright: #10b981;
  --color-accent-soft: #6ee7b7;
  --color-amber: #f59e0b;
  --color-dark: #07271c;

  --font-sans: "Sora", "Zen Kaku Gothic New", sans-serif;
  --font-jp: "Zen Kaku Gothic New", "Sora", sans-serif;

  --max-w: 1120px;
  --max-w-narrow: 800px;
  --pad-x: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-jp);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; transition: all .25s var(--ease); }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
strong { font-weight: 700; color: var(--color-ink); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-line-soft);
  background: rgba(255, 255, 255, 0.92);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo { display: flex; align-items: center; gap: 11px; color: var(--color-accent); }
.logo-mark { width: 34px; height: 34px; }
.logo-mark svg { width: 100%; height: 100%; }
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-name {
  font-family: var(--font-sans);
  font-size: 20px; font-weight: 700; letter-spacing: -0.01em;
  color: var(--color-ink);
}
.logo-sub {
  font-family: var(--font-sans);
  font-size: 9.5px; font-weight: 600; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--color-ink-mute); margin-top: 2px;
}
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 500; }
.site-nav a { color: var(--color-ink-soft); padding: 6px 0; position: relative; }
.site-nav a:hover { color: var(--color-accent); }
.site-nav a:not(.nav-cta)::after {
  content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
  background: var(--color-accent); transform: scaleX(0); transform-origin: right;
  transition: transform .35s var(--ease);
}
.site-nav a:not(.nav-cta):hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  background: var(--color-accent); color: #fff !important;
  padding: 9px 20px !important; border-radius: 999px; font-weight: 600;
}
.nav-cta:hover { background: var(--color-accent-bright); transform: translateY(-1px); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 150px var(--pad-x) 90px;
  overflow: hidden;
  text-align: center;
}
/* 背景画像レイヤー（images/hero-bg.svg は暫定。本番写真に差し替え可） */
.hero-bg-image {
  position: absolute; inset: 0;
  background-image: url("images/hero-bg.svg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
  animation: heroZoom 24s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1); }
  to { transform: scale(1.06); }
}
/* 可読性確保のオーバーレイ（中央を明るく） */
.hero-overlay {
  position: absolute; inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 70% at 50% 50%, rgba(255,255,255,0.78) 0%, rgba(255,255,255,0.45) 45%, rgba(255,255,255,0.12) 75%, transparent 100%),
    linear-gradient(to bottom, rgba(255,255,255,0.25) 0%, transparent 30%, transparent 70%, rgba(255,255,255,0.35) 100%);
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: 800px; margin: 0 auto;
  text-align: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-sans);
  font-size: 13px; font-weight: 600; letter-spacing: 0.04em;
  color: var(--color-accent);
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--color-line);
  padding: 8px 16px; border-radius: 999px;
  margin-bottom: 30px;
  backdrop-filter: blur(6px);
  opacity: 0; animation: fadeUp 1s var(--ease) 0.15s forwards;
}
.eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-accent-bright);
  box-shadow: 0 0 0 4px rgba(16,185,129,0.18);
  animation: dotBlink 2.4s ease-in-out infinite;
}
@keyframes dotBlink { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hero-title {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: clamp(46px, 9vw, 108px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: 30px;
  opacity: 0; animation: fadeUp 1.1s var(--ease) 0.3s forwards;
}
.title-accent {
  color: var(--color-accent-bright);
  display: inline-block;
}
.hero-lead {
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 400;
  line-height: 2;
  color: var(--color-ink-soft);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto; margin-right: auto;
  opacity: 0; animation: fadeUp 1.1s var(--ease) 0.5s forwards;
}
.hero-cta {
  display: flex; gap: 14px; flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 60px;
  opacity: 0; animation: fadeUp 1.1s var(--ease) 0.7s forwards;
}
.hero-stats {
  display: flex; gap: 56px; flex-wrap: wrap;
  justify-content: center;
  padding-top: 36px;
  border-top: 1px solid var(--color-line);
  max-width: 600px;
  margin-left: auto; margin-right: auto;
  opacity: 0; animation: fadeUp 1.1s var(--ease) 0.9s forwards;
}
.hero-stats li { display: flex; flex-direction: column; gap: 4px; align-items: center; }
.stat-num {
  font-family: var(--font-sans);
  font-size: 34px; font-weight: 700; line-height: 1;
  color: var(--color-ink);
  display: flex; align-items: baseline; gap: 3px;
}
.stat-unit { font-size: 15px; font-weight: 600; color: var(--color-accent); }
.stat-label { font-size: 12.5px; color: var(--color-ink-mute); font-weight: 500; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.hero-eyebrow, .hero-title, .hero-lead, .hero-cta, .hero-stats { transform: translateY(24px); }

/* Buttons */
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 30px;
  font-family: var(--font-sans);
  font-size: 14.5px; font-weight: 600; letter-spacing: 0.01em;
  border-radius: 999px;
  transition: all .3s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent); color: #fff; border: 1.5px solid var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-bright); border-color: var(--color-accent-bright);
  transform: translateY(-2px); box-shadow: 0 14px 30px -12px rgba(13,159,110,0.55);
}
.btn-ghost { background: rgba(255,255,255,0.5); color: var(--color-ink); border: 1.5px solid var(--color-line); }
.btn-ghost:hover { border-color: var(--color-ink); background: var(--color-surface); }
.btn-arrow { transition: transform .3s var(--ease); }
.btn-primary:hover .btn-arrow, .btn-ghost:hover .btn-arrow { transform: translateX(4px); }
.btn-large { padding: 19px 42px; font-size: 15.5px; }

/* =========================================================
   Section common
   ========================================================= */
section { padding: 130px 0; }
.section-head {
  text-align: center; margin-bottom: 72px;
  max-width: 660px; margin-left: auto; margin-right: auto;
  opacity: 0; transform: translateY(24px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.section-head.is-visible { opacity: 1; transform: translateY(0); }
.section-eyebrow {
  font-family: var(--font-sans);
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.24em;
  color: var(--color-accent); margin-bottom: 18px;
}
.section-title {
  font-family: var(--font-jp);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.25; letter-spacing: -0.01em;
  color: var(--color-ink); margin-bottom: 22px;
}
.section-lead {
  font-size: 15.5px; line-height: 1.9; color: var(--color-ink-soft); font-weight: 400;
}

/* =========================================================
   Services
   ========================================================= */
.services { background: var(--color-bg); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 980px; margin: 0 auto;
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 18px;
  padding: 38px 36px 32px;
  display: flex; flex-direction: column;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  opacity: 0; transform: translateY(30px);
}
.service-card.is-visible { opacity: 1; transform: translateY(0); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.service-card:nth-child(2) { transition-delay: .08s; }
.service-card:nth-child(3) { transition-delay: .12s; }
.service-card:nth-child(4) { transition-delay: .16s; }
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -24px rgba(22,23,15,0.18);
  border-color: var(--color-accent-soft);
}
.card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.card-num {
  font-family: var(--font-sans);
  font-size: 46px; font-weight: 700; line-height: 1;
  color: var(--color-bg-alt);
  -webkit-text-stroke: 1px var(--color-accent-soft);
  letter-spacing: -0.02em;
}
.card-icon {
  width: 48px; height: 48px;
  color: var(--color-accent);
  background: var(--color-bg-alt);
  border-radius: 12px;
  padding: 9px;
  display: flex; align-items: center; justify-content: center;
}
.card-icon svg { width: 100%; height: 100%; }
.card-heading {
  font-family: var(--font-jp);
  font-weight: 700; font-size: 20px; line-height: 1.5;
  letter-spacing: 0; color: var(--color-ink);
  margin-bottom: 16px;
}
.card-text {
  font-size: 14.5px; line-height: 1.95; color: var(--color-ink-soft);
  margin-bottom: 22px; flex: 1;
}
.card-approach {
  background: var(--color-bg-alt);
  border-radius: 12px;
  padding: 18px 20px;
}
.approach-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-surface);
  background: var(--color-accent);
  padding: 4px 10px; border-radius: 5px;
  margin-bottom: 10px;
}
.card-approach p { font-size: 13.5px; line-height: 1.85; color: var(--color-ink-soft); }

/* =========================================================
   Flow
   ========================================================= */
.flow { background: var(--color-bg-alt); color: var(--color-ink); position: relative; overflow: hidden; }
.flow .section-eyebrow { color: var(--color-accent); }
.flow .section-title { color: var(--color-ink); }
.flow .section-lead { color: var(--color-ink-soft); }
.flow::before {
  content: ""; position: absolute; top: -20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(16,185,129,0.16) 0%, transparent 65%);
  pointer-events: none;
}
.flow-list { max-width: 720px; margin: 0 auto; position: relative; }
.flow-list::before {
  content: ""; position: absolute; left: 31px; top: 32px; bottom: 32px; width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-soft));
  opacity: 0.45;
}
.flow-item {
  display: flex; gap: 28px; padding: 22px 0; position: relative;
  opacity: 0; transform: translateX(-24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.flow-item.is-visible { opacity: 1; transform: translateX(0); }
.flow-item:nth-child(2).is-visible { transition-delay: .1s; }
.flow-item:nth-child(3).is-visible { transition-delay: .2s; }
.flow-item:nth-child(4).is-visible { transition-delay: .3s; }
.flow-item:nth-child(5).is-visible { transition-delay: .4s; }
.flow-num {
  flex: 0 0 64px; height: 64px; border-radius: 16px;
  background: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans); font-size: 20px; font-weight: 700;
  color: #fff; position: relative; z-index: 1;
  box-shadow: 0 8px 18px -8px rgba(13,159,110,0.6);
}
.flow-content { padding-top: 8px; }
.flow-heading {
  font-family: var(--font-jp); font-weight: 700; font-size: 20px;
  color: var(--color-ink); margin-bottom: 8px;
}
.flow-content p { font-size: 14.5px; line-height: 1.9; color: var(--color-ink-soft); }

/* =========================================================
   FAQ
   ========================================================= */
.faq { background: var(--color-bg); }
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 14px;
  overflow: hidden;
  opacity: 0; transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease), border-color .3s var(--ease);
}
.faq-item.is-visible { opacity: 1; transform: translateY(0); }
.faq-item[open] { border-color: var(--color-accent-soft); }
.faq-item summary {
  display: flex; align-items: center; gap: 16px;
  padding: 22px 24px; cursor: pointer;
  font-family: var(--font-jp); font-weight: 700; font-size: 16px;
  color: var(--color-ink); list-style: none;
  transition: background .25s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: var(--color-bg-alt); }
.faq-q {
  flex: 0 0 28px; height: 28px; border-radius: 7px;
  background: var(--color-accent); color: var(--color-surface);
  font-family: var(--font-sans); font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.faq-toggle { margin-left: auto; flex: 0 0 16px; width: 16px; height: 16px; position: relative; }
.faq-toggle::before, .faq-toggle::after {
  content: ""; position: absolute; background: var(--color-accent); border-radius: 2px;
  transition: transform .3s var(--ease);
}
.faq-toggle::before { top: 7px; left: 0; width: 16px; height: 2px; }
.faq-toggle::after { left: 7px; top: 0; width: 2px; height: 16px; }
.faq-item[open] .faq-toggle::after { transform: rotate(90deg); opacity: 0; }
.faq-answer { padding: 0 24px 24px 68px; }
.faq-answer p { font-size: 14.5px; line-height: 1.9; color: var(--color-ink-soft); }

/* =========================================================
   About
   ========================================================= */
.about { background: var(--color-bg-alt); }
.about-inner {
  display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 64px;
  max-width: 1000px; align-items: start;
}
.about-left {
  opacity: 0; transform: translateY(20px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.about-left.is-visible { opacity: 1; transform: translateY(0); }
.about-left .section-eyebrow { text-align: left; }
.about-left .section-title { text-align: left; margin-bottom: 36px; }
.about-mark { width: 96px; height: 96px; color: var(--color-accent); opacity: 0.85; }
.about-mark svg { width: 100%; height: 100%; }
.about-body {
  opacity: 0; transform: translateY(20px);
  transition: opacity .8s var(--ease) .15s, transform .8s var(--ease) .15s;
}
.about-body.is-visible { opacity: 1; transform: translateY(0); }
.about-body p { font-size: 16px; line-height: 2.05; color: var(--color-ink-soft); margin-bottom: 22px; }
.about-body p:last-of-type { margin-bottom: 40px; }
.about-meta { padding-top: 28px; border-top: 1px solid var(--color-line); }
.meta-row {
  display: grid; grid-template-columns: 130px 1fr; gap: 20px;
  padding: 15px 0; border-bottom: 1px solid var(--color-line-soft);
  font-size: 14.5px;
}
.meta-row:last-child { border-bottom: 0; }
.meta-row dt {
  font-family: var(--font-sans); font-weight: 700; font-size: 12px;
  letter-spacing: 0.06em; color: var(--color-ink-mute); padding-top: 2px;
}
.meta-row dd { color: var(--color-ink); font-weight: 500; }

/* =========================================================
   CTA
   ========================================================= */
.cta {
  background: linear-gradient(135deg, #07271c 0%, #0b3a29 55%, #0d4a33 100%);
  color: var(--color-bg); position: relative; overflow: hidden;
}
.cta::before {
  content: ""; position: absolute; top: 40%; left: 50%; transform: translate(-50%,-50%);
  width: 900px; height: 900px;
  background: radial-gradient(circle, rgba(16,185,129,0.4) 0%, transparent 60%);
  pointer-events: none;
}
.cta::after {
  content: ""; position: absolute; bottom: -30%; right: -8%;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(251,191,36,0.28) 0%, transparent 65%);
  pointer-events: none;
}
.cta-inner {
  position: relative; text-align: center; max-width: 680px; margin: 0 auto;
  opacity: 0; transform: translateY(20px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.cta-inner.is-visible { opacity: 1; transform: translateY(0); }
.cta-eyebrow {
  font-family: var(--font-sans); font-size: 12.5px; font-weight: 700; letter-spacing: 0.24em;
  color: var(--color-accent-soft); margin-bottom: 22px;
}
.cta-title {
  font-family: var(--font-jp); font-weight: 900;
  font-size: clamp(30px, 5vw, 52px); line-height: 1.2; letter-spacing: -0.01em;
  margin-bottom: 26px;
}
.cta-lead { font-size: 15.5px; line-height: 2; color: rgba(255,255,255,0.82); margin-bottom: 44px; }
.cta .btn-primary { background: #fff; color: var(--color-ink); border-color: #fff; }
.cta .btn-primary:hover { background: var(--color-amber); color: var(--color-ink); border-color: var(--color-amber); box-shadow: 0 14px 32px -12px rgba(245,158,11,0.6); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { background: var(--color-bg); border-top: 1px solid var(--color-line); padding: 56px 0 32px; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 28px; text-align: center; }
.footer-brand { display: flex; flex-direction: column; gap: 5px; }
.footer-logo {
  font-family: var(--font-sans); font-size: 20px; font-weight: 700; letter-spacing: -0.01em;
  color: var(--color-ink);
}
.footer-tag {
  font-family: var(--font-sans); font-size: 10.5px; font-weight: 600; letter-spacing: 0.18em;
  color: var(--color-ink-mute);
}
.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; justify-content: center; font-size: 13.5px; font-weight: 500; }
.footer-nav a { color: var(--color-ink-soft); }
.footer-nav a:hover { color: var(--color-accent); }
.footer-copy { font-family: var(--font-sans); font-size: 11.5px; letter-spacing: 0.04em; color: var(--color-ink-mute); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .about-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-mark { display: none; }
}
@media (max-width: 760px) {
  section { padding: 84px 0; }
  .site-nav { display: none; }
  .hero { min-height: 88vh; padding: 130px var(--pad-x) 76px; }
  .hero-cta { margin-bottom: 48px; }
  .hero-cta .btn-primary, .hero-cta .btn-ghost { width: 100%; }
  .hero-stats { gap: 28px; }
  .stat-num { font-size: 28px; }
  .section-head { margin-bottom: 52px; }
  .service-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { padding: 30px 26px 26px; }
  .flow-list::before { left: 27px; }
  .flow-num { flex-basis: 56px; height: 56px; font-size: 17px; }
  .flow-item { gap: 20px; }
  .faq-answer { padding-left: 24px; }
  .meta-row { grid-template-columns: 100px 1fr; gap: 14px; }
}
@media (max-width: 460px) {
  body { font-size: 15px; }
  .hero-stats { gap: 20px; }
  .hero-stats li { flex: 1 1 40%; }
  .faq-item summary { font-size: 15px; padding: 18px 18px; gap: 12px; }
  .card-heading { font-size: 18.5px; }
  .meta-row { grid-template-columns: 1fr; gap: 2px; }
}