/* ==========================================================================
   株式会社ネクスト — コーポレートサイト
   Source design: claude.ai/design 8dcb2ecb (ui_kits/website/index.html)
   ========================================================================== */

/* ---- fonts ----
   Shippori Mincho B1 = JP mincho for headings & body.
   Six Caps = ultra-condensed display for the giant "NEXT" wordmark type.
   Oswald = condensed sans for EN microlabels, numerals, TEL figures. */
@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho+B1:wght@400;500;600;700;800&family=Six+Caps&family=Oswald:wght@300;400;500;600&display=swap');

:root {
  /* ---- base palette ---- */
  --black: #000000;
  --bg-page: #050505;
  --bg-panel: #0c0c0c;
  --bg-card: #101012;
  --bg-elevated: #17171a;

  --ink-0: #f4f4f1;
  --ink-1: #cfcfca;
  --ink-2: #9c9c96;
  --ink-3: #6c6c66;

  --accent: #cde307;        /* chartreuse yellow — the only color */
  --accent-dim: #9aab08;
  --on-accent: #0a0a00;

  --line-hair: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.45);
  --line-card: #242424;

  /* ---- semantic aliases ---- */
  --surface-card: var(--bg-card);
  --text-heading: var(--ink-0);
  --text-body: var(--ink-1);
  --border-default: var(--line-card);
  --border-tag: var(--line-strong);
  --button-primary-bg: var(--accent);
  --button-primary-fg: var(--on-accent);
  --link: var(--ink-0);
  --link-hover: var(--accent);
  --watermark: rgba(255, 255, 255, 0.05);

  /* ---- families ---- */
  --font-mincho: "Shippori Mincho B1", "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-display: "Six Caps", "Arial Narrow", Impact, sans-serif;
  --font-cond: "Oswald", "Barlow Condensed", "Arial Narrow", sans-serif;

  /* ---- type scale (desktop 1440) ---- */
  --size-num: 64px;
  --size-h1: 40px;
  --size-h2: 30px;
  --size-h3: 22px;
  --size-h4: 18px;
  --size-body: 14px;
  --size-micro: 11px;

  --lh-body: 2.1;
  --ls-jp: 0.06em;
  --ls-heading: 0.08em;
  --ls-micro: 0.22em;

  /* ---- spacing / shape / motion ---- */
  --space-6: 32px;
  --section-pad-y: 96px;
  --container: 1200px;
  --container-pad: 40px;
  --radius: 0px;
  --dur-fast: 0.18s;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- base ---- */
* { box-sizing: border-box; }

/* スクロールのスムージングは Lenis(js/main.js)が担当。
   CSS の scroll-behavior: smooth は Lenis と競合するため使わない */

/* アニメーションの初期状態(左右オフセット)による横はみ出しをクリップ。
   clip はスクロールコンテナを作らないため position: sticky を壊さない */
html, body { overflow-x: clip; }

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-body);
  font-family: var(--font-mincho);
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
a:hover { color: var(--link-hover); }

img { display: block; filter: grayscale(1) contrast(1.05); }

::selection { background: var(--accent); color: var(--on-accent); }

section, footer { scroll-margin-top: 20px; }

h1, h2, h3, p { margin: 0; }

/* ==========================================================================
   Components
   ========================================================================== */

/* Button (primary / lg) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-family: var(--font-mincho);
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--dur-fast) var(--ease);
  background: var(--button-primary-bg);
  color: var(--button-primary-fg);
  border: 1px solid transparent;
}
.btn:hover { color: var(--button-primary-fg); filter: brightness(1.07); }
.btn:active { background: var(--accent-dim); filter: none; }

/* Tag chip */
.tag {
  display: inline-block;
  border: 1px solid var(--border-tag);
  color: var(--ink-1);
  font-family: var(--font-mincho);
  font-size: var(--size-micro);
  letter-spacing: 0.08em;
  line-height: 1;
  padding: 7px 12px;
  white-space: nowrap;
}

/* MicroLabel */
.micro-label {
  font-family: var(--font-cond);
  font-size: var(--size-micro);
  font-weight: 500;
  letter-spacing: var(--ls-micro);
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1;
}
.micro-label--muted { color: var(--ink-2); }

/* SectionHeading */
.section-heading__kicker { margin-bottom: 12px; }
.section-heading__title {
  font-family: var(--font-mincho);
  font-size: var(--size-h3);
  font-weight: 600;
  letter-spacing: var(--ls-heading);
  color: var(--text-heading);
  line-height: 1.5;
}
.section-heading__bar {
  width: 32px;
  height: 2px;
  background: var(--accent);
  margin-top: 14px;
}

/* ServiceNumber */
.service-number { display: flex; align-items: flex-start; gap: 20px; }
.service-number__num {
  font-family: var(--font-cond);
  font-weight: 300;
  font-size: var(--size-num);
  line-height: 0.9;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.service-number__meta { padding-top: 6px; }
.service-number__ja {
  font-family: var(--font-mincho);
  font-size: var(--size-h4);
  font-weight: 600;
  letter-spacing: var(--ls-heading);
  color: var(--text-heading);
  margin-top: 8px;
}

/* DefRow */
.def-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: baseline;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line-hair);
}
.def-row--first { border-top: 1px solid var(--line-hair); }
.def-row__label {
  font-family: var(--font-cond);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ink-0);
}
.def-row__label--jp {
  font-family: var(--font-mincho);
  letter-spacing: 0.08em;
}
.def-row__value {
  font-family: var(--font-cond);
  font-size: 17px;
  letter-spacing: 0.08em;
  color: var(--ink-0);
}
.def-row__value--jp {
  font-family: var(--font-mincho);
  font-size: 15px;
  letter-spacing: 0.08em;
}
.def-row__value--multi { line-height: 1.9; }

/* Panel */
.panel {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  padding: var(--space-6);
  border-radius: var(--radius);
}

.accent { color: var(--accent); }

/* ==========================================================================
   Loader
   ========================================================================== */
.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader__inner { overflow: hidden; padding: 0 8px; }
.loader__logo {
  display: flex;
  font-family: var(--font-display);
  font-size: 340px;
  line-height: 0.9;
  letter-spacing: 0.06em;
  color: var(--ink-0);
  user-select: none;
}
/* 各文字はマスク付きスロット内で左からスライドイン(枠外は見えない) */
.loader__logo span { display: inline-block; overflow: hidden; }
.loader__logo i { display: inline-block; font-style: normal; padding: 0 0.03em; }
.loader__rule {
  width: 100%;
  height: 3px;
  background: var(--accent);
  margin-top: 18px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 48px;
  background: var(--black);
}
.site-header__logo {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink-0);
}
.site-header__nav { display: flex; align-items: center; gap: 40px; }
.site-header__nav a {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-0);
}
.site-header__nav a:hover { color: var(--accent); }
.site-header__nav-bar { width: 36px; height: 2px; background: var(--accent); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  background: var(--black);
  overflow: hidden;
  padding-bottom: 70px;
}
.hero__bg { position: absolute; inset: 0; }
.hero__bg img {
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.9;
}
.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #000 30%, rgba(0, 0, 0, 0.55) 55%, rgba(0, 0, 0, 0.15) 100%);
}
/* ヒーロー〜会社概要(.strap-scope)の間だけ画面に粘着し、
   範囲の下端で止まってコンテンツと一緒にスクロールアウトする。
   レール(範囲の全高に伸びる absolute)内で sticky にすることで、
   装飾の下端が範囲からはみ出さない */
.strap-scope { position: relative; }
.strap-rail {
  position: absolute;
  top: 0; bottom: 0; left: 34px;
  z-index: 40;
  pointer-events: none;
}
.hero__strap {
  position: sticky;
  top: 170px;
  width: max-content;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.hero__strap-text {
  writing-mode: vertical-rl;
  font-family: var(--font-cond);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--accent);
  font-weight: 500;
}
.hero__strap-line { width: 2px; height: 64px; background: var(--accent); }
.hero__content { position: relative; z-index: 2; padding: 60px 0 0 150px; }
.hero__wordmark {
  font-family: var(--font-display);
  font-size: 460px;
  line-height: 0.78;
  letter-spacing: 0.04em;
  color: var(--ink-0);
  user-select: none;
}
.hero__tagline {
  margin-top: 28px;
  font-size: var(--size-h1);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.75;
  color: var(--ink-0);
}

/* ==========================================================================
   About
   ========================================================================== */
.about {
  background: var(--black);
  padding: var(--section-pad-y) 0;
  border-top: 1px solid #111;
}
.about__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about__copy {
  margin-top: 36px;
  font-size: var(--size-body);
  line-height: var(--lh-body);
  letter-spacing: var(--ls-jp);
}
.about__photo { width: 100%; height: auto; margin-left: auto; }

/* ==========================================================================
   Services
   ========================================================================== */
.services { background: var(--bg-page); padding: 0 0 var(--section-pad-y); }
.services__inner { max-width: 1320px; margin: 0 auto; padding: 0 var(--container-pad); }

/* pinned scrollytelling intro (GSAP ScrollTrigger) */
.services__pin {
  min-height: 100vh;
  display: flex;
  align-items: center;
  width: 100%;
}
.services__pin .services__inner { width: 100%; }
.services__intro {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 64px;
  align-items: start;
  max-width: var(--container);
  margin: 0 auto;
}
.services__lede span { will-change: opacity; }
.services__statement {
  font-size: var(--size-h3);
  font-weight: 600;
  letter-spacing: var(--ls-heading);
  color: var(--ink-0);
}
.services__lede {
  margin-top: 18px;
  font-size: 13px;
  line-height: 2.1;
  letter-spacing: var(--ls-jp);
}
.services__rows { display: flex; flex-direction: column; gap: 64px; }

.service-row { display: grid; grid-template-columns: 55% 45%; align-items: stretch; }
.service-row--flip { grid-template-columns: 45% 55%; }
.service-row__card { position: relative; z-index: 2; padding: 56px 52px; }
.service-row__head {
  margin-top: 30px;
  font-size: var(--size-h2);
  font-weight: 600;
  letter-spacing: var(--ls-heading);
  line-height: 1.7;
  color: var(--ink-0);
}
.service-row__body {
  margin-top: 22px;
  font-size: var(--size-body);
  line-height: var(--lh-body);
  letter-spacing: var(--ls-jp);
}
.service-row__tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 28px; }
.service-row__photo { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }

/* ==========================================================================
   Flow
   ========================================================================== */
.flow { background: var(--bg-page); padding: 40px 0 var(--section-pad-y); }
.flow__inner { max-width: 1320px; margin: 0 auto; padding: 0 var(--container-pad); }
.flow__title {
  text-align: center;
  margin-bottom: 48px;
  font-size: var(--size-h3);
  font-weight: 600;
  letter-spacing: var(--ls-heading);
  color: var(--ink-0);
}
.flow__grid {
  display: grid;
  grid-template-columns: 1fr 24px 1fr 24px 1fr 24px 1fr;
  gap: 12px;
  align-items: stretch;
}
.flow__card { padding: 0; display: flex; flex-direction: column; }
.flow__card-head { padding: 26px 18px 20px; text-align: center; }
.flow__icon { font-size: 26px; line-height: 1; color: var(--ink-0); }
.flow__en { margin-top: 12px; }
.flow__ja {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: var(--ls-jp);
  color: var(--ink-1);
}
.flow__photo { width: 100%; height: 110px; object-fit: cover; margin-top: auto; }
.flow__arrow {
  align-self: center;
  color: var(--accent);
  font-family: var(--font-cond);
  font-size: 20px;
  text-align: center;
}

/* ==========================================================================
   Company
   ========================================================================== */
.company { position: relative; background: var(--black); overflow: hidden; }
.company__photo {
  position: absolute;
  /* コンテンツ幅(--container)の右端に揃え、切り抜かず全体を表示 */
  right: max(0px, calc((100% - var(--container)) / 2 + var(--container-pad)));
  top: 0;
  height: 100%;
  width: auto;
}
.company__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #000 38%, rgba(0, 0, 0, 0.72) 58%, rgba(0, 0, 0, 0.15) 100%);
}
.company__inner {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--section-pad-y) var(--container-pad);
}
.company__rows { max-width: 560px; margin-top: 44px; }
.company__note {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: var(--ls-jp);
  color: var(--ink-2);
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact { padding: 10px; background: var(--bg-page); }
.contact__frame {
  position: relative;
  border: 2px solid var(--accent);
  background: var(--black);
  overflow: hidden;
}
.contact__photo {
  position: absolute;
  left: 0; top: 0;
  width: 55%; height: 100%;
  object-fit: cover;
  opacity: 0.7;
}
.contact__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.85) 60%, #000 100%);
}
.contact__inner {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 88px var(--container-pad);
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 80px;
  align-items: center;
}
.contact__title {
  margin-top: 16px;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.7;
  color: var(--ink-0);
}
.contact__lede {
  margin-top: 22px;
  font-size: 13px;
  line-height: 2.1;
  letter-spacing: var(--ls-jp);
}
.contact__btn { width: 100%; padding: 30px 0; font-size: 17px; }
.contact__rows { margin-top: 28px; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--bg-page); }
.site-footer__frame {
  position: relative;
  background: var(--black);
  overflow: hidden;
  padding: 64px 56px 0;
}
.site-footer__watermark {
  position: absolute;
  left: 16px; top: -30px;
  font-family: var(--font-display);
  font-size: 420px;
  line-height: 1;
  color: var(--watermark);
  user-select: none;
  pointer-events: none;
}
.site-footer__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: 64px;
}
.site-footer__brand { border-left: 4px solid var(--accent); padding-left: 24px; }
.site-footer__name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink-0);
}
.site-footer__name-en {
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-2);
  margin-top: 8px;
}
.site-footer__slogan {
  margin-top: 26px;
  font-size: 13px;
  line-height: 2.1;
  letter-spacing: var(--ls-jp);
}
.site-footer__nav {
  display: flex;
  flex-direction: column;
  gap: 22px;
  border-right: 1px solid var(--line-hair);
  padding-right: 48px;
}
.site-footer__nav a {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-0);
}
.site-footer__nav a:hover { color: var(--accent); }
.site-footer__nav a .chev { font-family: var(--font-cond); color: var(--ink-2); }
.site-footer__info { font-size: 13px; line-height: 2.2; letter-spacing: var(--ls-jp); }
.site-footer__tels {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 4px 16px;
  margin-top: 20px;
  font-family: var(--font-cond);
  letter-spacing: 0.08em;
  color: var(--ink-0);
}
.site-footer__note { margin-top: 20px; color: var(--ink-2); }
.site-footer__bottom {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line-hair);
  margin-top: 56px;
  padding: 22px 0 24px;
}
.site-footer__copyright {
  font-family: var(--font-cond);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
}
.site-footer__top-link {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-cond);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ink-0);
}
.site-footer__top-link:hover { color: var(--accent); }
.site-footer__top-link .caret { font-size: 13px; }

/* ==========================================================================
   Responsive(900px 以下:タブレット/スマホ)
   デスクトップの見た目は変更しない
   ========================================================================== */
@media (max-width: 900px) {
  :root {
    --container-pad: 24px;
    --section-pad-y: 64px;
  }

  /* 縦装飾はコンテンツと重なるため非表示 */
  .strap-rail { display: none; }

  /* Loader */
  .loader__logo { font-size: clamp(110px, 34vw, 340px); }
  .loader__rule { height: 2px; margin-top: 12px; }

  /* Header:ロゴの下にナビを折り返し */
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 24px;
  }
  .site-header__nav { flex-wrap: wrap; gap: 16px 20px; }
  .site-header__nav a { font-size: 12px; }
  .site-header__nav-bar { display: none; }

  /* Hero */
  .hero { padding-bottom: 48px; }
  .hero__content { padding: 32px 24px 0; }
  .hero__wordmark { font-size: clamp(140px, 34vw, 320px); }
  .hero__tagline { font-size: clamp(22px, 5.6vw, 32px); }

  /* About:1カラム */
  .about__inner { grid-template-columns: 1fr; gap: 36px; }

  /* Services:導入・カードとも1カラム */
  .services__intro { grid-template-columns: 1fr; gap: 28px; }
  .service-row,
  .service-row--flip { grid-template-columns: 1fr; }
  .service-row__photo { order: -1; height: 240px; min-height: 0; }
  .service-row__card { padding: 32px 24px; }
  .service-row__head { font-size: 22px; }
  .services__rows { gap: 48px; }

  /* Flow:縦積み、矢印は下向き */
  .flow__grid { grid-template-columns: 1fr; gap: 10px; }
  .flow__arrow { transform: rotate(90deg); padding: 6px 0; }

  /* Company:写真を通常フローで上に */
  .company__photo { position: static; width: 100%; height: auto; }
  .company__scrim { display: none; }
  .company__inner { padding-top: 40px; }
  .company__rows { margin-top: 32px; }
  .def-row { grid-template-columns: 88px 1fr; }

  /* Contact:1カラム、写真は全面+暗めのスクリム */
  .contact__photo { width: 100%; }
  .contact__scrim { background: rgba(0, 0, 0, 0.78); }
  .contact__inner { grid-template-columns: 1fr; gap: 36px; padding: 56px var(--container-pad); }
  .contact__title { font-size: 26px; }

  /* Footer:1カラム */
  .site-footer__frame { padding: 40px 24px 0; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 36px; }
  .site-footer__nav { border-right: none; padding-right: 0; gap: 16px; }
  .site-footer__watermark { font-size: 200px; top: auto; bottom: -20px; }
  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-top: 40px;
  }
}

@media (max-width: 480px) {
  .hero__wordmark { font-size: clamp(120px, 54vw, 220px); }
  .hero__tagline { font-size: 20px; }
  .flow__title { font-size: 19px; }
  .services__statement { font-size: 19px; }
}