/* ==========================================================================
   Sections — layout & section-specific styles (mobile first)
   ========================================================================== */

/* ---------- Preloader ---------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: var(--z-preloader);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background: var(--bg);
  transition: opacity .6s var(--ease-inout), visibility .6s;
}
.preloader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
/* 実ロゴを色分解した4枚のペタルが1枚ずつ灯る */
.preloader-mark {
  position: relative;
  width: 76px;
  height: 75px;
}
.preloader-mark img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform-origin: 50% 50%;
  animation: petal-light .5s var(--ease-out) forwards;
}
.preloader-mark img:nth-child(1) { animation-delay: .05s; } /* navy */
.preloader-mark img:nth-child(2) { animation-delay: .2s; }  /* rose */
.preloader-mark img:nth-child(3) { animation-delay: .35s; } /* greige */
.preloader-mark img:nth-child(4) { animation-delay: .5s; }  /* blue */
@keyframes petal-light {
  from { opacity: 0; transform: scale(.85); }
  to   { opacity: 1; transform: scale(1); }
}

/* ---------- Header ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px; /* タップ領域の確保 */
  text-decoration: none;
}
/* スクロール量でペタルが回る(JS: main.js)。実ロゴPNG — 濃紺ペタルが沈まないよう微グロー */
.site-header .petals, .site-footer .petals {
  transform-origin: 50% 50%;
  will-change: transform;
  filter: drop-shadow(0 0 5px rgba(159, 191, 212, .35));
}
.brand-word {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: .3em;
  color: var(--ink);
}
.site-nav {
  display: none;
}
.header-cta {
  display: none;
}
.nav-toggle {
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 6px;
  margin-left: auto;
  min-width: 44px;
  min-height: 44px;
  padding: 0 10px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle i {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform .3s var(--ease-out), opacity .3s;
}
.nav-toggle[aria-expanded="true"] i:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] i:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobilenav);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: var(--pad);
  background: rgba(11, 14, 23, .96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s var(--ease-out), visibility .35s;
}
.mobile-nav.is-open { opacity: 1; visibility: visible; }
.mobile-nav a {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(2rem, 8vw, 3rem);
  letter-spacing: .06em;
  color: var(--ink);
  text-decoration: none;
  padding: 6px 0;
}
.mobile-nav a:hover { color: var(--rose); }

@media (min-width: 900px) {
  .site-nav { display: flex; gap: 4px; margin-left: auto; }
  /* [hd-underline-draw 改] 下線が左→右に描かれる */
  .site-nav a {
    padding: 8px 14px;
    font-size: var(--fs-small);
    font-weight: 400;
    color: var(--ink-dim);
    text-decoration: none;
    background: var(--grad-signal) no-repeat left calc(100% - 5px) / 0% 1.5px;
    transition: color .2s, background-size .35s var(--ease-out);
  }
  .site-nav a:hover { color: var(--ink); background-size: calc(100% - 28px) 1.5px; background-position-x: 14px; }
  /* [btn-slide-fill 改] グラデ塗りが滑り込む */
  .header-cta {
    display: inline-block;
    padding: 9px 22px;
    font-size: var(--fs-small);
    font-weight: 700;
    color: var(--bg);
    background: var(--grad-signal) no-repeat left / 0% 100%;
    background-color: var(--ink);
    border-radius: 999px;
    text-decoration: none;
    transition: background-size .4s var(--ease-out);
  }
  .header-cta:hover { background-size: 100% 100%; }
  .nav-toggle, .mobile-nav { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  /* 動画ロード前・生成前のフォールバック: ペタル二光源のラジアル */
  background:
    radial-gradient(ellipse 60% 50% at 18% 20%, rgba(228, 176, 171, .14), transparent 60%),
    radial-gradient(ellipse 55% 45% at 85% 75%, rgba(159, 191, 212, .12), transparent 60%),
    var(--bg);
}
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-shade {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 55%, rgba(11, 14, 23, .34), rgba(11, 14, 23, .14) 60%, transparent),
    linear-gradient(180deg, rgba(11, 14, 23, .55), transparent 30%, transparent 62%, var(--bg) 100%);
}
.hero-inner {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
  padding-block: 20vh 16vh;
}
.hero-kicker {
  font-family: var(--f-mono);
  font-size: var(--fs-micro);
  letter-spacing: .32em;
  color: var(--blue);
  margin-bottom: 26px;
}
/* [in-typing 改] 端末風の点滅キャレット */
.hero-kicker::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1em;
  margin-left: 10px;
  vertical-align: -.12em;
  background: var(--blue);
  animation: caret-blink .9s step-end infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }
.hero-title {
  font-family: var(--f-body);
  font-size: var(--fs-hero);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: .01em;
  margin-bottom: 26px;
  text-shadow: 0 2px 28px rgba(11, 14, 23, .55);
}
.hero-title em {
  font-style: normal;
  background: var(--grad-signal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
/* [tx-mask-rise 改] 行ごとにマスクからせり上がる(1回きり) */
.hero-title .rise {
  display: block;
  overflow: hidden;
  padding-bottom: .08em;
  margin-bottom: -.08em;
}
.hero-title .rise > span {
  display: inline-block;
  transform: translateY(112%);
  animation: hero-rise 1s var(--ease-out) forwards;
}
.hero-title .rise:nth-child(2) > span { animation-delay: .14s; }
@keyframes hero-rise {
  to { transform: translateY(0); }
}
.hero-rotate { margin-bottom: 30px; }
.hero-lead {
  font-size: var(--fs-small);
  line-height: 2.1;
  color: var(--ink-dim);
  max-width: 34em;
}
/* モバイルでは改行位置をブラウザに任せる(設計改行は広幅のみ) */
@media (max-width: 700px) {
  .hero-lead br, .statement-copy br { display: none; }
}
.hero-scroll {
  position: absolute;
  right: var(--pad);
  bottom: 30px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.hero-scroll span {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .3em;
  color: var(--ink-dim);
  writing-mode: vertical-rl;
}
.hero-scroll i {
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--ink-dim), transparent);
  animation: scroll-cue 2s var(--ease-inout) infinite;
  transform-origin: top;
}
@keyframes scroll-cue {
  0% { transform: scaleY(0); }
  45%, 55% { transform: scaleY(1); }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Statement / About ---------- */
.statement { padding-block: var(--sec-gap); }
.statement-copy {
  font-size: clamp(1.5rem, 3.4vw, 2.9rem);
  font-weight: 700;
  line-height: 1.65;
  letter-spacing: .02em;
  margin-bottom: 40px;
}
.nowrap { white-space: nowrap; }
.statement-sub {
  color: var(--ink-dim);
  max-width: 38em;
  margin-bottom: 56px;
}
.statement-value {
  display: grid;
  gap: 12px;
  max-width: 620px;
  padding: 28px 30px;
  border-left: 2px solid;
  border-image: var(--grad-signal) 1;
  background: rgba(240, 238, 233, .03);
}
.value-label {
  font-family: var(--f-mono);
  font-size: var(--fs-micro);
  letter-spacing: .28em;
  color: var(--rose);
}

/* ---------- Services ---------- */
.services { padding-block: 0 var(--sec-gap); }
.service-grid {
  display: grid;
  gap: 20px;
  perspective: 900px;
}
/* [gs-lift-glow 改] ホバーでペタル色グロー(transformはtiltが使うためshadowで表現) */
.service-card {
  padding: clamp(26px, 4vw, 40px);
  transition: transform .15s ease-out, border-color .4s, box-shadow .4s;
}
.service-card:hover {
  border-color: rgba(228, 176, 171, .3);
  box-shadow:
    0 18px 44px rgba(0, 0, 0, .35),
    0 0 44px rgba(228, 176, 171, .12),
    0 0 26px rgba(159, 191, 212, .1);
}
.service-card .cg-hd-num::before { transition: transform .55s var(--ease-out); }
.service-card:hover .cg-hd-num::before { transform: rotateY(360deg); }
.service-card > p {
  margin-block: 18px 20px;
  font-size: var(--fs-small);
  color: var(--ink-dim);
}
.service-card ul {
  display: grid;
  gap: 10px;
}
.service-card li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-small);
  line-height: 1.8;
}
.service-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1.5px;
  background: var(--grad-signal);
}
@media (min-width: 700px) {
  .service-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- Products ---------- */
.products { padding-block: 0 var(--sec-gap); }
.products-grid {
  display: grid;
  gap: 28px;
  /* reveal前のカードが translateX で画面外へ出るため、横方向だけ切る */
  overflow-x: clip;
}
.product {
  display: grid;
  gap: 28px;
  align-content: start;
  padding: clamp(24px, 4vw, 48px);
}
.product-genre {
  font-family: var(--f-mono);
  font-size: var(--fs-micro);
  letter-spacing: .26em;
  color: var(--blue);
  margin-bottom: 10px;
}
.product-body h3 {
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 2.4vw, 2.3rem);
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 14px;
}
.product-tagline {
  font-weight: 700;
  margin-bottom: 14px;
}
.product-desc {
  font-size: var(--fs-small);
  color: var(--ink-dim);
  margin-bottom: 22px;
}
.product-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}
.product-note {
  font-family: var(--f-mono);
  font-size: var(--fs-micro);
  letter-spacing: .06em;
  color: var(--ink-dim);
}
@media (min-width: 900px) {
  /* 左右2カラム。右列を下げて互い違いに */
  .products-grid {
    grid-template-columns: 1fr 1fr;
    gap: clamp(28px, 3.5vw, 48px);
  }
  /* 右列を下げて互い違いに(下方向マージンは最終行下に余白を生むので使わない) */
  .products-grid .product:nth-child(even) { margin-top: 110px; }
}

/* ---------- Vision N.E.I.A ---------- */
.vision {
  position: relative;
  padding-block: 0;
}
.vision-pin {
  min-height: 100svh;
  display: flex;
  /* 中央寄せだと手前に(100svh−内容)/2 の空白が出るため上寄せにする */
  align-items: flex-start;
  padding-block: clamp(80px, 10vh, 130px) var(--sec-gap);
  background:
    linear-gradient(180deg, var(--bg), rgba(11, 14, 23, .58) 30%, rgba(11, 14, 23, .58) 70%, var(--bg)),
    url("../assets/img/vision-bg.webp") center / cover no-repeat,
    var(--bg);
}
/* WebGLメタボール層。canvasが起動したら webp 背景の上を覆う */
.neia-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
  pointer-events: none;
}
.neia-field.is-live { opacity: 1; }
/* 中央のテキスト可読性を守るヴェール(端は透ける) */
.neia-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse 62% 58% at 50% 50%, rgba(11, 14, 23, .72), rgba(11, 14, 23, .35) 55%, transparent 82%);
}
.vision-pin .wrap { position: relative; z-index: 2; }
.neia { position: relative; }
.neia-lines {
  position: absolute;
  inset: -30px 0 auto;
  width: 100%;
  height: 220px;
  pointer-events: none;
  display: none;
}
.neia-lines path {
  stroke: url(#neiaGrad);
  stroke: rgba(159, 191, 212, .35);
  stroke-width: 1;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}
.neia-list {
  counter-reset: none;
  display: grid;
  gap: 44px;
}
.neia-item {
  --petal-color: var(--rose);
  --petal-glow: var(--glow-rose);
  display: grid;
  gap: 8px;
}
.neia-item[data-petal="navy"]   { --petal-color: #7B93CE; --petal-glow: rgba(123, 147, 206, .35); }
.neia-item[data-petal="rose"]   { --petal-color: var(--rose);   --petal-glow: var(--glow-rose); }
.neia-item[data-petal="greige"] { --petal-color: var(--greige); --petal-glow: rgba(217, 210, 199, .3); }
.neia-item[data-petal="blue"]   { --petal-color: var(--blue);   --petal-glow: var(--glow-blue); }
.neia-item h3 {
  font-family: var(--f-mono);
  font-size: var(--fs-small);
  font-weight: 400;
  letter-spacing: .22em;
  color: var(--ink-dim);
}
.neia-item > p {
  font-size: var(--fs-small);
  color: var(--ink-dim);
  line-height: 2;
  max-width: 30em;
}
.neia-key {
  font-family: var(--f-mono);
  font-size: var(--fs-micro);
  letter-spacing: .18em;
  color: var(--petal-color);
}
@media (min-width: 900px) {
  .neia-lines { display: block; }
  .neia-list { grid-template-columns: repeat(4, 1fr); gap: 28px; }
  .neia-item:nth-child(odd)  { padding-top: 90px; }
  .neia-item:nth-child(even) { padding-top: 0; }
}

/* ---------- Works ---------- */
.works { padding-block: 0 var(--sec-gap); }
.works-grid {
  display: grid;
  gap: 36px;
}
.cg-cd-line > p { font-size: var(--fs-small); color: var(--ink-dim); margin-bottom: 16px; }
.work-result {
  color: var(--ink) !important;
  padding-left: 16px;
  border-left: 2px solid;
  border-image: var(--grad-signal) 1;
}
.work-scope {
  font-family: var(--f-mono);
  font-size: var(--fs-micro) !important;
  letter-spacing: .06em;
  color: var(--ink-dim);
  margin-bottom: 0 !important;
}
@media (min-width: 900px) {
  .works-grid { grid-template-columns: repeat(3, 1fr); gap: 28px; }
}

/* ---------- Company ---------- */
.company { padding-block: 0 var(--sec-gap); }

/* ---------- Contact ---------- */
.contact {
  padding-block: 0 var(--sec-gap);
  text-align: center;
}
.contact .cg-hd-kicker { align-items: center; }
.contact-copy {
  font-size: var(--fs-huge);
  font-weight: 700;
  line-height: 1.7;
  margin-bottom: 48px;
}
.contact-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
@media (min-width: 700px) {
  .contact-actions { flex-direction: row; justify-content: center; }
}

/* ---------- Footer ---------- */
.site-footer { position: relative; z-index: 2; }
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding-block: 56px 40px;
  text-align: center;
}
.footer-tagline {
  font-family: var(--f-display);
  font-weight: 300;
  letter-spacing: .22em;
  color: var(--ink-dim);
  font-size: var(--fs-small);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
}
.footer-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-size: var(--fs-small);
  color: var(--ink-dim);
  text-decoration: none;
  background: var(--grad-signal) no-repeat left calc(100% - 12px) / 0% 1px;
  transition: color .25s, background-size .35s var(--ease-out);
}
.footer-links a:hover { color: var(--ink); background-size: 100% 1px; }

.footer-copy { color: var(--ink-dim); font-size: var(--fs-micro); }