/* ==========================================================================
   IRODORI architect — モノクロ × Neon Green × Yu Gothic
   設計: data/generated/architect/design-spec.md
   配色: inspiration-board.md 3-1「ニュートラル + 単色アクセント」
   Preloader: L12 マスクリビール (diamond)
   Hero: A:fullscreen / Header: minimal / 構成: P3 ストーリー先行
   ========================================================================== */


/* --------------------------------------------------------------------------
   1. CSS Variables (40+ tokens)
   -------------------------------------------------------------------------- */

:root {
  /* --- Color: モノクロ + Neon Green --- */
  --arc-base: #ffffff;
  --arc-bg-soft: #f4f4f4;
  --arc-bg-mute: #edf2f7;
  --arc-bg-deep: #0f1b2d;
  --arc-text: #1a1a1a;
  --arc-text-sub: #555555;
  --arc-text-muted: #888888;
  --arc-text-on-deep: #f4f4f4;
  --arc-divider: #1a1a1a;
  --arc-divider-soft: #d8d8d8;
  --arc-accent: #00b07a;
  --arc-accent-deep: #016e4f;
  --arc-accent-soft: #d6f0e6;
  --arc-warn: #d04a17;

  /* --- Typography (建築は端正な無セリフ標準) --- */
  --arc-font-jp: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  --arc-font-jp-body: "Noto Sans JP", "Yu Gothic", sans-serif;
  --arc-font-en: "Lato", "Inter", "Helvetica Neue", sans-serif;
  --arc-font-num: "Inter", "Lato", "Helvetica Neue", sans-serif;

  --arc-fs-eyebrow: 0.78rem;
  --arc-fs-body: 0.95rem;
  --arc-fs-lead: 1.05rem;
  --arc-fs-h3: 1.2rem;
  --arc-fs-h2: clamp(1.6rem, 3.4vw, 2.4rem);
  --arc-fs-h1: clamp(2.2rem, 6vw, 4rem);

  --arc-lh-body: 1.85;
  --arc-lh-tight: 1.35;
  --arc-ls-heading: 0.04em;
  --arc-ls-body: 0.04em;
  --arc-ls-en: 0.18em;
  --arc-ls-num: 0;

  /* --- Layout --- */
  --arc-container: 1240px;
  --arc-container-narrow: 920px;
  --arc-px: clamp(20px, 5vw, 60px);
  --arc-section-py: clamp(80px, 12vh, 160px);
  --arc-radius: 0;          /* 建築は角ばった印象 */
  --arc-radius-sm: 2px;

  /* --- Shadows --- */
  --arc-shadow-soft: 0 2px 12px rgba(0, 0, 0, 0.04);
  --arc-shadow-card: 0 12px 36px rgba(0, 0, 0, 0.08);

  /* --- Motion --- */
  --arc-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --arc-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --arc-ease-snappy: cubic-bezier(0.4, 0, 0.2, 1);
  --arc-dur: 480ms;
  --arc-dur-fast: 220ms;
  --arc-dur-slow: 840ms;

  /* --- Loader --- */
  --irodori-loader-bg: #1a1a1a;
  --irodori-loader-text: #ffffff;
  --irodori-z-loader: 9999;
}

@property --irodori-mask-size {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 0%;
}


/* --------------------------------------------------------------------------
   2. Reset / Base
   -------------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body.arc-body {
  margin: 0;
  font-family: var(--arc-font-jp-body);
  font-size: var(--arc-fs-body);
  line-height: var(--arc-lh-body);
  letter-spacing: var(--arc-ls-body);
  color: var(--arc-text);
  background: var(--arc-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; padding: 0; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--arc-font-jp);
  font-weight: 700;
  line-height: var(--arc-lh-tight);
  letter-spacing: var(--arc-ls-heading);
  margin: 0;
}

:focus-visible { outline: 2px solid var(--arc-accent); outline-offset: 3px; border-radius: 0; }


/* --------------------------------------------------------------------------
   3. PRELOADER L12 (diamond マスク → 建物リビール)
   -------------------------------------------------------------------------- */

.arc-loader {
  position: fixed;
  inset: 0;
  z-index: var(--irodori-z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  pointer-events: all;
}
.arc-loader__surface {
  position: absolute;
  inset: 0;
  background: var(--irodori-loader-bg);
  --irodori-mask-size: 0%;
  clip-path: polygon(
    50% calc(50% - var(--irodori-mask-size)),
    calc(50% + var(--irodori-mask-size)) 50%,
    50% calc(50% + var(--irodori-mask-size)),
    calc(50% - var(--irodori-mask-size)) 50%
  );
  animation: arcLoaderReveal 1.4s var(--arc-ease) 0.3s forwards;
}
@keyframes arcLoaderReveal {
  0% { --irodori-mask-size: 0%; }
  100% { --irodori-mask-size: 180%; }
}
.arc-loader__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--irodori-loader-text);
  text-align: center;
}
.arc-loader__mark {
  opacity: 0;
  transform: rotate(-12deg) scale(0.7);
  animation: arcLoaderMark 0.8s var(--arc-ease) 1s forwards;
}
@keyframes arcLoaderMark {
  to { opacity: 1; transform: rotate(0) scale(1); }
}
.arc-loader__name {
  font-family: var(--arc-font-jp);
  font-size: 1.2rem;
  margin: 0;
  letter-spacing: 0.16em;
  opacity: 0;
  animation: arcLoaderText 0.6s var(--arc-ease) 1.4s forwards;
}
.arc-loader__sub {
  font-family: var(--arc-font-en);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  margin: 0;
  opacity: 0;
  animation: arcLoaderText 0.6s var(--arc-ease) 1.7s forwards;
}
@keyframes arcLoaderText {
  to { opacity: 0.92; }
}
.arc-loader.is-exit { animation: arcLoaderExit 0.7s var(--arc-ease-in) forwards; }
@keyframes arcLoaderExit {
  to { opacity: 0; transform: scale(0.96); }
}
.arc-loader.is-hidden { display: none; }
@media (prefers-reduced-motion: reduce) {
  .arc-loader__surface, .arc-loader__mark, .arc-loader__name, .arc-loader__sub { animation: none; opacity: 1; transform: none; }
  .arc-loader__surface { --irodori-mask-size: 180%; }
}


/* --------------------------------------------------------------------------
   4. HEADER (minimal)
   -------------------------------------------------------------------------- */

.arc-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: transparent;
  color: var(--arc-base);
  transition: background var(--arc-dur), color var(--arc-dur);
}
.arc-header.is-scrolled {
  background: rgba(255, 255, 255, 0.97);
  color: var(--arc-text);
  border-bottom: 1px solid var(--arc-divider-soft);
}

.arc-header__inner {
  max-width: var(--arc-container);
  margin: 0 auto;
  padding: 18px var(--arc-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.arc-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: currentColor;
}
.arc-header__logo-mark { line-height: 0; color: currentColor; }
.arc-header__logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.arc-header__logo-jp { font-family: var(--arc-font-jp); font-size: 1.05rem; letter-spacing: 0.08em; }
.arc-header__logo-en { font-family: var(--arc-font-en); font-size: 0.66rem; letter-spacing: 0.4em; opacity: 0.7; margin-top: 2px; }

.arc-header__actions { display: flex; align-items: center; gap: 16px; }
.arc-header__cta {
  font-family: var(--arc-font-en);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  padding: 10px 18px;
  border: 1px solid currentColor;
  transition: background var(--arc-dur-fast), color var(--arc-dur-fast);
}
.arc-header__cta:hover { background: var(--arc-accent); color: var(--arc-base); border-color: var(--arc-accent); }

.arc-header__menu-btn {
  width: 44px; height: 44px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px;
}
.arc-header__menu-btn span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--arc-dur-fast), opacity var(--arc-dur-fast);
}
.arc-header.is-menu-open .arc-header__menu-btn span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.arc-header.is-menu-open .arc-header__menu-btn span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

.arc-header__drawer {
  position: fixed;
  inset: 0;
  background: var(--arc-base);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--arc-dur), visibility 0s linear var(--arc-dur);
}
.arc-header.is-menu-open .arc-header__drawer {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--arc-dur), visibility 0s;
}
.arc-header__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
  text-align: center;
}
.arc-header__nav-list li { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.arc-header__nav-list a {
  font-family: var(--arc-font-en);
  font-size: clamp(2rem, 4vw, 2.6rem);
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--arc-text);
  display: inline-block;
  position: relative;
  padding: 8px 0;
}
.arc-header__nav-list a::after {
  content: "";
  position: absolute; left: 50%; right: 50%; bottom: 0; height: 2px;
  background: var(--arc-accent);
  transition: left var(--arc-dur) var(--arc-ease), right var(--arc-dur) var(--arc-ease);
}
.arc-header__nav-list a:hover::after { left: 0; right: 0; }
.arc-header__nav-list span { font-family: var(--arc-font-jp); font-size: 0.78rem; color: var(--arc-text-sub); letter-spacing: 0.06em; }


/* --------------------------------------------------------------------------
   5. HERO A:fullscreen
   -------------------------------------------------------------------------- */

.arc-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  color: var(--arc-base);
  display: flex;
  align-items: flex-end;
  isolation: isolate;
}
.arc-hero__media { position: absolute; inset: 0; z-index: -2; }
.arc-hero__media img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  transform: scale(1.04);
  animation: arcHeroZoom 14s var(--arc-ease) infinite alternate;
}
@keyframes arcHeroZoom {
  to { transform: scale(1.10); }
}
.arc-hero__overlay {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.18) 50%, rgba(0,0,0,0.05) 100%);
}
.arc-hero__inner {
  width: 100%;
  max-width: var(--arc-container);
  margin: 0 auto;
  padding: 0 var(--arc-px) clamp(60px, 10vh, 120px);
}
.arc-hero__eyebrow {
  font-family: var(--arc-font-en);
  font-size: 0.74rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  margin: 0 0 18px;
  opacity: 0.85;
}
.arc-hero__title {
  font-family: var(--arc-font-jp);
  font-size: var(--arc-fs-h1);
  font-weight: 700;
  margin: 0 0 28px;
  letter-spacing: 0.08em;
}
.arc-hero__subtitle {
  font-family: var(--arc-font-jp-body);
  font-size: var(--arc-fs-lead);
  line-height: 2;
  max-width: 540px;
  margin: 0 0 36px;
  opacity: 0.95;
}
.arc-hero__meta { display: flex; flex-wrap: wrap; gap: 18px; }
.arc-hero__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--arc-base);
  color: var(--arc-text);
  font-family: var(--arc-font-jp);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  transition: background var(--arc-dur-fast), color var(--arc-dur-fast), transform var(--arc-dur-fast);
}
.arc-hero__btn:hover { background: var(--arc-accent); color: var(--arc-base); transform: translateX(4px); }
.arc-hero__btn--ghost {
  background: transparent;
  color: var(--arc-base);
  border: 1px solid rgba(255,255,255,0.5);
}
.arc-hero__btn--ghost:hover { background: rgba(255,255,255,0.12); border-color: var(--arc-base); transform: translateX(4px); }

.arc-hero__scroll {
  position: absolute;
  bottom: 24px; right: 36px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  font-family: var(--arc-font-en);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  opacity: 0.85;
  writing-mode: vertical-rl;
}
.arc-hero__scroll-bar {
  display: block; width: 1px; height: 80px; background: var(--arc-base);
  position: relative; overflow: hidden;
}
.arc-hero__scroll-bar::after {
  content: ""; position: absolute; left: 0; top: -100%; width: 100%; height: 100%;
  background: var(--arc-accent);
  animation: arcScrollBar 2.4s var(--arc-ease) infinite;
}
@keyframes arcScrollBar {
  0% { top: -100%; }
  60% { top: 0; }
  100% { top: 100%; }
}


/* --------------------------------------------------------------------------
   6. STATS BAR (実績数値)
   -------------------------------------------------------------------------- */

.arc-stats {
  background: var(--arc-bg-deep);
  color: var(--arc-text-on-deep);
  padding: 64px var(--arc-px);
}
.arc-stats__title {
  font-family: var(--arc-font-en);
  font-size: 0.8rem;
  letter-spacing: 0.4em;
  text-align: center;
  font-weight: 400;
  margin: 0 0 36px;
  opacity: 0.55;
  text-transform: uppercase;
}
.arc-stats__list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: var(--arc-container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  align-items: end;
}
.arc-stats__list li {
  position: relative;
  padding: 0 16px;
  border-left: 1px solid rgba(255,255,255,0.15);
}
.arc-stats__list li:first-child { border-left: 0; }
.arc-stats__num {
  display: block;
  font-family: var(--arc-font-num);
  font-weight: 900;
  font-size: clamp(2.8rem, 6vw, 4.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--arc-base);
}
.arc-stats__unit {
  display: inline-block;
  font-family: var(--arc-font-jp);
  font-size: 1rem;
  margin-left: 6px;
  color: var(--arc-accent);
  font-weight: 700;
}
.arc-stats__label {
  display: block;
  font-family: var(--arc-font-jp-body);
  font-size: 0.82rem;
  margin-top: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
}
.arc-stats__label small { display: block; font-size: 0.68rem; opacity: 0.5; margin-top: 4px; }


/* --------------------------------------------------------------------------
   7. CONCEPT (左右分割、ストーリー)
   -------------------------------------------------------------------------- */

.arc-concept { padding: var(--arc-section-py) var(--arc-px); background: var(--arc-base); position: relative; }
.arc-concept__inner {
  max-width: var(--arc-container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.arc-concept__media {
  position: relative;
}
.arc-concept__media img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  filter: grayscale(0.15);
  transition: filter var(--arc-dur-slow);
}
.arc-concept__media:hover img { filter: grayscale(0); }
.arc-concept__media::after {
  content: "01 / CONCEPT";
  position: absolute;
  left: -8px; top: -8px;
  background: var(--arc-text);
  color: var(--arc-base);
  font-family: var(--arc-font-en);
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  padding: 8px 14px;
  font-weight: 700;
}

.arc-concept__body { padding: 24px 0; }
.arc-concept__eyebrow {
  font-family: var(--arc-font-en);
  font-size: 0.78rem;
  letter-spacing: 0.36em;
  color: var(--arc-accent);
  margin: 0 0 20px;
  font-weight: 700;
}
.arc-concept__title { font-size: var(--arc-fs-h2); margin: 0 0 28px; }
.arc-concept__lead { font-size: 1.1rem; line-height: 1.85; margin: 0 0 22px; font-weight: 700; }
.arc-concept__text { font-size: 0.95rem; color: var(--arc-text-sub); line-height: 2; margin: 0 0 32px; }
.arc-concept__small { display: block; margin-top: 24px; font-size: 0.78rem; color: var(--arc-text-muted); letter-spacing: 0.04em; }
.arc-concept__link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--arc-font-en);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  border-bottom: 1.5px solid currentColor;
  color: var(--arc-text);
  padding-bottom: 4px;
  transition: color var(--arc-dur-fast), padding-right var(--arc-dur-fast);
}
.arc-concept__link:hover { color: var(--arc-accent); padding-right: 8px; }


/* --------------------------------------------------------------------------
   8. WORKS (4-2-1 ギャラリー)
   -------------------------------------------------------------------------- */

.arc-works { padding: var(--arc-section-py) var(--arc-px); background: var(--arc-bg-soft); }
.arc-works__inner { max-width: var(--arc-container); margin: 0 auto; }
.arc-works__head { margin-bottom: 56px; max-width: 720px; }
.arc-works__eyebrow { font-family: var(--arc-font-en); font-size: 0.78rem; letter-spacing: 0.36em; color: var(--arc-accent); margin: 0 0 14px; font-weight: 700; }
.arc-works__title { font-size: var(--arc-fs-h2); margin: 0 0 16px; }
.arc-works__lead { color: var(--arc-text-sub); margin: 0; font-size: 0.96rem; line-height: 1.85; }

.arc-works__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
  grid-template-areas:
    "feature item2 item3"
    "feature item4 item5";
  margin-bottom: 24px;
}
.arc-works__item--feature { grid-area: feature; }
.arc-works__item:nth-of-type(2) { grid-area: item2; }
.arc-works__item:nth-of-type(3) { grid-area: item3; }
.arc-works__item:nth-of-type(4) { grid-area: item4; }
.arc-works__item:nth-of-type(5) { grid-area: item5; }
.arc-works__item:nth-of-type(6) { display: none; }
.arc-works__item:nth-of-type(7) { display: none; }

.arc-works__item {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--arc-text);
}
.arc-works__media {
  position: relative;
  width: 100%;
  height: 100%;
  margin: 0;
}
.arc-works__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 280px;
  transition: transform var(--arc-dur-slow) var(--arc-ease), filter var(--arc-dur-slow);
  filter: grayscale(0.2);
}
.arc-works__item:hover .arc-works__media img { transform: scale(1.04); filter: grayscale(0); }

.arc-works__media figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 20px 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0) 100%);
  color: var(--arc-base);
}
.arc-works__cat {
  font-family: var(--arc-font-en);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  margin: 0 0 6px;
  color: var(--arc-accent);
  font-weight: 700;
}
.arc-works__name { font-size: 1.05rem; margin: 0 0 4px; }
.arc-works__year { font-family: var(--arc-font-en); font-size: 0.78rem; opacity: 0.85; margin: 0; letter-spacing: 0.06em; }

.arc-works__item--feature .arc-works__media img { min-height: 600px; }
.arc-works__item--feature .arc-works__name { font-size: 1.4rem; }
.arc-works__item--feature .arc-works__media figcaption { padding: 32px 36px; }

.arc-works__more {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--arc-font-en);
  font-size: 0.85rem;
  letter-spacing: 0.24em;
  font-weight: 700;
  border-bottom: 1.5px solid var(--arc-text);
  padding-bottom: 4px;
  margin-top: 24px;
  color: var(--arc-text);
  transition: color var(--arc-dur-fast), border-color var(--arc-dur-fast);
}
.arc-works__more:hover { color: var(--arc-accent); border-color: var(--arc-accent); }


/* --------------------------------------------------------------------------
   9. SERVICES (4 領域)
   -------------------------------------------------------------------------- */

.arc-services { padding: var(--arc-section-py) var(--arc-px); background: var(--arc-base); }
.arc-services__inner { max-width: var(--arc-container); margin: 0 auto; }
.arc-services__head { margin-bottom: 56px; max-width: 720px; }
.arc-services__eyebrow { font-family: var(--arc-font-en); font-size: 0.78rem; letter-spacing: 0.36em; color: var(--arc-accent); margin: 0 0 14px; font-weight: 700; }
.arc-services__title { font-size: var(--arc-fs-h2); margin: 0; }

.arc-services__list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--arc-divider); border: 1px solid var(--arc-divider); }
.arc-services__item {
  background: var(--arc-base);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: 72px 1fr;
  column-gap: 28px;
  row-gap: 0;
  align-items: start;
  transition: background var(--arc-dur);
}
.arc-services__item:hover { background: var(--arc-bg-mute); }
.arc-services__num {
  font-family: var(--arc-font-en);
  font-weight: 900;
  font-size: 2rem;
  line-height: 1;
  margin: 0;
  color: var(--arc-accent);
  letter-spacing: 0;
  grid-column: 1;
  grid-row: 1 / span 3;
}
.arc-services__name { grid-column: 2; font-size: 1.2rem; margin: 0 0 14px; line-height: 1.4; }
.arc-services__text { grid-column: 2; font-size: 0.92rem; color: var(--arc-text-sub); line-height: 1.85; margin: 0 0 18px; }
.arc-services__price {
  grid-column: 2;
  font-family: var(--arc-font-en);
  font-size: 0.84rem;
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--arc-divider-soft);
  color: var(--arc-text-sub);
}


/* --------------------------------------------------------------------------
   10. NEWS / EVENT
   -------------------------------------------------------------------------- */

.arc-news { padding: var(--arc-section-py) var(--arc-px); background: var(--arc-bg-soft); }
.arc-news__inner { max-width: var(--arc-container-narrow); margin: 0 auto; }
.arc-news__head { display: flex; align-items: baseline; gap: 24px; margin-bottom: 36px; }
.arc-news__eyebrow { font-family: var(--arc-font-en); font-size: 0.78rem; letter-spacing: 0.36em; color: var(--arc-accent); margin: 0; font-weight: 700; }
.arc-news__title { font-size: var(--arc-fs-h2); margin: 0; }

.arc-news__list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--arc-divider); }
.arc-news__item {
  display: grid;
  grid-template-columns: 130px 100px 1fr;
  align-items: center;
  gap: 24px;
  padding: 26px 8px;
  border-bottom: 1px solid var(--arc-divider-soft);
  transition: background var(--arc-dur-fast), padding-left var(--arc-dur-fast);
}
.arc-news__item:hover { background: var(--arc-base); padding-left: 14px; }
.arc-news__item time { font-family: var(--arc-font-en); font-size: 0.92rem; color: var(--arc-text-sub); letter-spacing: 0.06em; }
.arc-news__tag {
  display: inline-flex; justify-content: center;
  font-family: var(--arc-font-en);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.16em;
  padding: 5px 12px;
  background: var(--arc-text);
  color: var(--arc-base);
}
.arc-news__tag--event { background: var(--arc-accent); }
.arc-news__tag--award { background: var(--arc-warn); }
.arc-news__tag--media { background: #555555; }
.arc-news__item h3 { margin: 0; font-size: 0.98rem; line-height: 1.6; }


/* --------------------------------------------------------------------------
   11. RECRUIT (3カード分岐)
   -------------------------------------------------------------------------- */

.arc-recruit {
  padding: var(--arc-section-py) var(--arc-px);
  background: var(--arc-bg-deep);
  color: var(--arc-text-on-deep);
}
.arc-recruit__inner { max-width: var(--arc-container); margin: 0 auto; }
.arc-recruit__head { text-align: center; margin-bottom: 56px; }
.arc-recruit__eyebrow { font-family: var(--arc-font-en); font-size: 0.78rem; letter-spacing: 0.36em; color: var(--arc-accent); margin: 0 0 14px; font-weight: 700; }
.arc-recruit__title { font-size: var(--arc-fs-h2); margin: 0; color: var(--arc-base); line-height: 1.5; }

.arc-recruit__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.arc-recruit__card {
  display: block;
  padding: 44px 36px 38px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--arc-text-on-deep);
  transition: background var(--arc-dur), border-color var(--arc-dur), transform var(--arc-dur);
}
.arc-recruit__card:hover { background: rgba(0, 176, 122, 0.12); border-color: var(--arc-accent); transform: translateY(-6px); }
.arc-recruit__type { font-family: var(--arc-font-en); font-size: 0.72rem; letter-spacing: 0.36em; color: var(--arc-accent); margin: 0 0 10px; font-weight: 700; }
.arc-recruit__card h3 { font-size: 1.4rem; margin: 0 0 18px; color: var(--arc-base); }
.arc-recruit__detail { font-size: 0.92rem; line-height: 1.85; margin: 0 0 24px; opacity: 0.85; }
.arc-recruit__more { font-family: var(--arc-font-en); font-size: 0.85rem; letter-spacing: 0.18em; font-weight: 700; border-bottom: 1.5px solid currentColor; padding-bottom: 3px; }
.arc-recruit__card--newgrad {}
.arc-recruit__card--career {}
.arc-recruit__card--intern {}
details.arc-faq { margin: 0 0 12px; background: var(--arc-base); border: 1px solid var(--arc-divider-soft); }
details.arc-faq summary { padding: 18px 22px; cursor: pointer; font-family: var(--arc-font-jp); font-weight: 700; color: var(--arc-text); display: flex; gap: 14px; align-items: flex-start; list-style: none; }
details.arc-faq summary::-webkit-details-marker { display: none; }
details.arc-faq > div { padding: 0 22px 22px 64px; color: var(--arc-text-sub); line-height: 1.85; font-size: 0.93rem; }


/* --------------------------------------------------------------------------
   12. OFFICE (拠点)
   -------------------------------------------------------------------------- */

.arc-office { padding: var(--arc-section-py) var(--arc-px); background: var(--arc-base); }
.arc-office__inner { max-width: var(--arc-container); margin: 0 auto; }
.arc-office__head { margin-bottom: 48px; }
.arc-office__eyebrow { font-family: var(--arc-font-en); font-size: 0.78rem; letter-spacing: 0.36em; color: var(--arc-accent); margin: 0 0 14px; font-weight: 700; }
.arc-office__title { font-size: var(--arc-fs-h2); margin: 0; }

.arc-office__list { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; }
.arc-office__card {
  padding: 32px 28px;
  background: var(--arc-bg-soft);
  border-top: 3px solid var(--arc-text);
  transition: border-color var(--arc-dur);
}
.arc-office__card--main { border-top-color: var(--arc-accent); background: var(--arc-base); border: 1px solid var(--arc-divider); border-top: 3px solid var(--arc-accent); }
.arc-office__card:hover { border-color: var(--arc-accent); }
.arc-office__city { font-family: var(--arc-font-en); font-size: 0.78rem; letter-spacing: 0.32em; color: var(--arc-accent); margin: 0 0 8px; font-weight: 700; }
.arc-office__card h3 { font-size: 1.15rem; margin: 0 0 14px; }
.arc-office__card address {
  font-style: normal;
  font-size: 0.88rem;
  color: var(--arc-text-sub);
  line-height: 1.85;
  margin: 0 0 16px;
}
.arc-office__card address a { color: var(--arc-text); border-bottom: 1px dashed var(--arc-divider-soft); }
.arc-office__card address a:hover { color: var(--arc-accent); border-color: var(--arc-accent); }
.arc-office__access { font-size: 0.82rem; color: var(--arc-text-muted); margin: 0; }


/* --------------------------------------------------------------------------
   13. CONTACT CTA
   -------------------------------------------------------------------------- */

.arc-contact-cta {
  padding: var(--arc-section-py) var(--arc-px);
  background: var(--arc-text);
  color: var(--arc-base);
  text-align: center;
}
.arc-contact-cta__inner { max-width: var(--arc-container-narrow); margin: 0 auto; }
.arc-contact-cta__eyebrow { font-family: var(--arc-font-en); font-size: 0.82rem; letter-spacing: 0.4em; color: var(--arc-accent); margin: 0 0 18px; font-weight: 700; }
.arc-contact-cta__title { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 24px; line-height: 1.5; }
.arc-contact-cta__lead { font-size: 1rem; line-height: 1.85; margin: 0 0 36px; opacity: 0.85; }
.arc-contact-cta__btns { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.arc-contact-cta__btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 18px 32px;
  font-family: var(--arc-font-jp);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  transition: background var(--arc-dur-fast), color var(--arc-dur-fast), transform var(--arc-dur-fast);
}
.arc-contact-cta__btn--primary {
  background: var(--arc-accent);
  color: var(--arc-base);
}
.arc-contact-cta__btn--primary:hover { background: var(--arc-accent-deep); transform: translateY(-2px); }
.arc-contact-cta__btn--ghost {
  background: transparent;
  color: var(--arc-base);
  border: 1px solid rgba(255,255,255,0.5);
}
.arc-contact-cta__btn--ghost:hover { background: rgba(255,255,255,0.12); border-color: var(--arc-base); }


/* --------------------------------------------------------------------------
   14. FOOTER
   -------------------------------------------------------------------------- */

.arc-footer { background: var(--arc-bg-deep); color: rgba(255,255,255,0.7); padding: 80px var(--arc-px) 36px; }
.arc-footer__inner {
  max-width: var(--arc-container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 56px;
}
.arc-footer__brand { padding-right: 32px; }
.arc-footer__logo { display: inline-block; font-family: var(--arc-font-jp); font-size: 1.2rem; color: var(--arc-base); letter-spacing: 0.06em; margin-bottom: 16px; }
.arc-footer__intro { font-size: 0.84rem; line-height: 1.8; margin: 0; }

.arc-footer__nav h3, .arc-footer__sns h3 {
  font-family: var(--arc-font-en);
  font-size: 0.74rem;
  letter-spacing: 0.32em;
  color: var(--arc-base);
  margin: 0 0 18px;
  font-weight: 700;
}
.arc-footer__nav ul, .arc-footer__sns ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; font-size: 0.86rem; }
.arc-footer__sns ul { flex-direction: row; gap: 14px; }
.arc-footer__nav a, .arc-footer__sns a { transition: color var(--arc-dur-fast); }
.arc-footer__nav a:hover, .arc-footer__sns a:hover { color: var(--arc-accent); }
.arc-footer__sns a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,0.2);
  transition: background var(--arc-dur-fast), border-color var(--arc-dur-fast);
}
.arc-footer__sns a:hover { background: var(--arc-accent); border-color: var(--arc-accent); color: var(--arc-base); }

.arc-footer__copy {
  margin-top: 56px;
  text-align: center;
  font-family: var(--arc-font-en);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  color: rgba(255,255,255,0.4);
}


/* --------------------------------------------------------------------------
   15. SCROLL ANIMATIONS — S4 clipPath + S7 parallax + S5 scale
   -------------------------------------------------------------------------- */

.arc-anim { opacity: 0; transition: opacity 0.9s var(--arc-ease), transform 0.9s var(--arc-ease), clip-path 0.9s var(--arc-ease); will-change: transform, opacity, clip-path; }
.arc-anim--clip { clip-path: inset(0 100% 0 0); opacity: 1; }
.arc-anim--scale { transform: scale(0.92); }
.arc-anim--up { transform: translateY(40px); }
.arc-anim--rotate { transform: translateY(20px) rotate(-1deg); }

.arc-anim.is-inview { opacity: 1; transform: none; clip-path: inset(0 0 0 0); }

@media (prefers-reduced-motion: reduce) {
  .arc-anim { opacity: 1; transform: none; clip-path: none; transition: none; }
  .arc-hero__media img { animation: none; transform: scale(1); }
}


/* --------------------------------------------------------------------------
   16. UTILITY
   -------------------------------------------------------------------------- */

.arc-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* --------------------------------------------------------------------------
   17. RESPONSIVE
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .arc-stats__list { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .arc-stats__list li { border-left: 0; padding: 16px 0; border-top: 1px solid rgba(255,255,255,0.15); }
  .arc-stats__list li:nth-child(1), .arc-stats__list li:nth-child(2) { border-top: 0; }
  .arc-concept__inner { grid-template-columns: 1fr; gap: 48px; }
  .arc-services__list { grid-template-columns: 1fr; }
  .arc-recruit__grid { grid-template-columns: 1fr; gap: 14px; }
  .arc-office__list { grid-template-columns: 1fr; gap: 16px; }
  .arc-works__grid {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "feature feature"
      "item2 item3"
      "item4 item5";
  }
  .arc-works__item--feature .arc-works__media img { min-height: 400px; }
}

@media (max-width: 768px) {
  :root { --arc-section-py: 80px; }
  .arc-header__cta { display: none; }
  .arc-hero__title { font-size: clamp(2rem, 8vw, 2.8rem); }
  .arc-hero__scroll { display: none; }
  .arc-stats { padding: 56px 24px; }
  .arc-stats__num { font-size: 2.5rem; }
  .arc-news__item { grid-template-columns: 90px 80px 1fr; gap: 12px; padding: 18px 4px; }
  .arc-services__item { padding: 32px 24px; gap: 16px; }
  .arc-footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .arc-hero__meta { flex-direction: column; align-items: stretch; }
  .arc-hero__btn { justify-content: center; }
  .arc-works__grid {
    grid-template-columns: 1fr;
    grid-template-areas: "feature" "item2" "item3" "item4" "item5";
  }
  .arc-works__media img { min-height: 240px !important; }
  .arc-footer__inner { grid-template-columns: 1fr; }
}


/* --------------------------------------------------------------------------
   18. KEYFRAMES (補完)
   -------------------------------------------------------------------------- */

@keyframes arcFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes arcSlideUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: none; } }
@keyframes arcClipReveal { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes arcBounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }


/* --------------------------------------------------------------------------
   19. PRINT
   -------------------------------------------------------------------------- */

@media print {
  .arc-loader, .arc-header__menu-btn, .arc-hero__scroll, .arc-contact-cta__btns { display: none !important; }
  body.arc-body { color: #000 !important; background: #fff !important; }
  .arc-header { position: static !important; background: #fff !important; color: #000 !important; border-bottom: 1px solid #ccc; }
  .arc-hero__media img, .arc-works__media img, .arc-concept__media img { filter: grayscale(1); opacity: 0.6; }
  .arc-hero { min-height: auto !important; page-break-after: always; }
  .arc-stats, .arc-recruit, .arc-bg-deep { background: #f4f4f4 !important; color: #000 !important; }
  a { color: #000 !important; text-decoration: underline !important; }
}


/* --------------------------------------------------------------------------
   20. DARK MODE
   -------------------------------------------------------------------------- */

@media (prefers-color-scheme: dark) {
  :root {
    --arc-base: #0c0c0c;
    --arc-bg-soft: #161616;
    --arc-bg-mute: #1f1f1f;
    --arc-text: #f4f4f4;
    --arc-text-sub: #aaaaaa;
    --arc-text-muted: #777777;
    --arc-divider: #f4f4f4;
    --arc-divider-soft: #2a2a2a;
  }
  .arc-header.is-scrolled { background: rgba(12,12,12,0.96); }
  .arc-services__list { border-color: #2a2a2a; background: #2a2a2a; }
  .arc-services__item:hover { background: var(--arc-bg-mute); }
  .arc-office__card { background: var(--arc-bg-soft); }
  .arc-news__item:hover { background: var(--arc-bg-mute); }
  .arc-works__item--feature .arc-works__media figcaption { background: linear-gradient(to top, rgba(0,0,0,0.95), transparent); }
}


/* --------------------------------------------------------------------------
   21. CONTAINER QUERIES (詳細補完)
   -------------------------------------------------------------------------- */

.arc-stats { container-type: inline-size; container-name: arc-stats; }
.arc-services__list { container-type: inline-size; container-name: arc-services; }
.arc-office__list { container-type: inline-size; container-name: arc-office; }

@container arc-stats (max-width: 700px) {
  .arc-stats__list { grid-template-columns: 1fr 1fr; }
}

@container arc-services (max-width: 600px) {
  .arc-services__item { grid-template-columns: 1fr; }
  .arc-services__num { font-size: 1.6rem; }
}

@container arc-office (max-width: 800px) {
  .arc-office__card { padding: 26px 22px; }
}


/* --------------------------------------------------------------------------
   22. EXTRAS — focus-visible / high-contrast
   -------------------------------------------------------------------------- */

.arc-header__cta:focus-visible,
.arc-hero__btn:focus-visible,
.arc-contact-cta__btn:focus-visible,
.arc-recruit__card:focus-visible,
.arc-works__item:focus-visible {
  outline: 3px solid var(--arc-accent);
  outline-offset: 4px;
}

@media (forced-colors: active) {
  .arc-services__list, .arc-services__item { border: 1px solid CanvasText; }
  .arc-recruit__card, .arc-office__card { border: 2px solid CanvasText; }
}


/* --------------------------------------------------------------------------
   23. BUTTON / TAG VARIANTS 拡張
   -------------------------------------------------------------------------- */

.arc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--arc-font-jp);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  border: 1.5px solid transparent;
  transition: background var(--arc-dur-fast), color var(--arc-dur-fast), transform var(--arc-dur-fast);
  cursor: pointer;
}
.arc-btn--accent { background: var(--arc-accent); color: var(--arc-base); }
.arc-btn--accent:hover { background: var(--arc-accent-deep); transform: translateY(-2px); }
.arc-btn--ghost-dark { background: transparent; color: var(--arc-text); border-color: var(--arc-text); }
.arc-btn--ghost-dark:hover { background: var(--arc-text); color: var(--arc-base); }
.arc-btn--block { display: flex; width: 100%; }
.arc-btn--lg { padding: 18px 36px; font-size: 1.05rem; }

.arc-tag {
  display: inline-flex;
  font-family: var(--arc-font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  padding: 5px 12px;
  background: var(--arc-text);
  color: var(--arc-base);
}
.arc-tag--accent { background: var(--arc-accent); }
.arc-tag--ghost { background: transparent; color: var(--arc-text); border: 1px solid var(--arc-text); }


/* --------------------------------------------------------------------------
   25. SUB-PAGE COMPONENTS — page-hero / breadcrumb / prose / form / toc
   -------------------------------------------------------------------------- */

/* --- Page Hero (slim, below header) --- */

.arc-page-hero {
  position: relative;
  padding: clamp(140px, 22vh, 220px) var(--arc-px) clamp(48px, 6vh, 72px);
  background: linear-gradient(135deg, var(--arc-bg-deep) 0%, #1b2840 100%);
  color: var(--arc-base);
  overflow: hidden;
  isolation: isolate;
}
.arc-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 80% 20%, rgba(0, 176, 122, 0.12), transparent 55%),
    repeating-linear-gradient(135deg, transparent 0 40px, rgba(255,255,255,0.025) 40px 41px);
}
.arc-page-hero__inner {
  max-width: var(--arc-container);
  margin: 0 auto;
}
.arc-page-hero__eyebrow {
  font-family: var(--arc-font-en);
  font-size: 0.78rem;
  letter-spacing: 0.4em;
  margin: 0 0 14px;
  color: var(--arc-accent);
  font-weight: 700;
  text-transform: uppercase;
}
.arc-page-hero__title {
  font-family: var(--arc-font-jp);
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  margin: 0 0 16px;
  line-height: 1.4;
  letter-spacing: var(--arc-ls-heading);
  font-weight: 700;
}
.arc-page-hero__lead {
  font-size: 1rem;
  line-height: var(--arc-lh-body);
  opacity: 0.9;
  max-width: 960px;
  margin: 0;
}

/* --- Breadcrumb --- */

.arc-bread {
  background: var(--arc-bg-soft);
  border-bottom: 1px solid var(--arc-divider-soft);
  padding: 14px var(--arc-px);
}
.arc-bread__inner {
  max-width: var(--arc-container);
  margin: 0 auto;
  font-family: var(--arc-font-jp-body);
  font-size: 0.82rem;
  color: var(--arc-text-sub);
}
.arc-bread__inner ol { list-style: none; padding: 0; margin: 0; display: flex; gap: 10px; flex-wrap: wrap; }
.arc-bread__inner li { display: inline-flex; align-items: center; gap: 10px; }
.arc-bread__inner li::after { content: "/"; color: var(--arc-text-muted); margin-left: 10px; }
.arc-bread__inner li:last-child::after { display: none; }
.arc-bread__inner a { color: var(--arc-accent-deep); transition: color var(--arc-dur-fast); }
.arc-bread__inner a:hover { color: var(--arc-accent); }
.arc-bread__inner li[aria-current] { color: var(--arc-text); font-weight: 500; }

/* --- Prose (content-heavy pages: about / news / legal) --- */

.arc-prose {
  max-width: var(--arc-container-narrow);
  margin: 0 auto;
  padding: clamp(56px, 8vh, 96px) var(--arc-px);
  font-size: 1rem;
  line-height: 1.95;
  color: var(--arc-text);
}
.arc-prose h2 {
  font-family: var(--arc-font-jp);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  margin: 56px 0 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--arc-text);
  line-height: 1.5;
  font-weight: 700;
  letter-spacing: var(--arc-ls-heading);
}
.arc-prose h2:first-child { margin-top: 0; }
.arc-prose h3 {
  font-family: var(--arc-font-jp);
  font-size: 1.15rem;
  margin: 32px 0 12px;
  color: var(--arc-text);
  line-height: 1.55;
  font-weight: 700;
}
.arc-prose h3::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--arc-accent);
  margin-right: 12px;
  vertical-align: middle;
}
.arc-prose p { margin: 0 0 18px; }
.arc-prose strong { font-weight: 700; color: var(--arc-text); }
.arc-prose ul, .arc-prose ol { margin: 0 0 22px; padding-left: 1.4em; }
.arc-prose li { margin-bottom: 8px; }
.arc-prose a { color: var(--arc-accent-deep); border-bottom: 1px solid currentColor; transition: color var(--arc-dur-fast); }
.arc-prose a:hover { color: var(--arc-accent); }
.arc-prose blockquote {
  margin: 28px 0;
  padding: 22px 28px;
  background: var(--arc-bg-soft);
  border-left: 4px solid var(--arc-accent);
  font-style: normal;
  color: var(--arc-text-sub);
}
.arc-prose hr { border: 0; border-top: 1px solid var(--arc-divider-soft); margin: 48px 0; }
.arc-prose small { font-size: 0.8rem; color: var(--arc-text-muted); }
.arc-prose .arc-prose__lead {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--arc-text);
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--arc-divider-soft);
  line-height: 1.85;
}

/* --- Table (about, services, etc.) --- */

.arc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 32px;
  background: var(--arc-base);
  border: 1px solid var(--arc-text);
  font-size: 0.92rem;
}
.arc-table th, .arc-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--arc-divider-soft);
  text-align: left;
  vertical-align: top;
}
.arc-table th {
  background: var(--arc-bg-soft);
  font-weight: 700;
  width: 30%;
  color: var(--arc-text);
  letter-spacing: var(--arc-ls-heading);
}
.arc-table tr:last-child th, .arc-table tr:last-child td { border-bottom: 0; }

/* --- Form (contact / recruit) --- */

.arc-form { max-width: 720px; margin: 0 auto; }
.arc-form__row { display: grid; grid-template-columns: 200px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--arc-divider-soft); align-items: start; }
.arc-form__row:last-of-type { border-bottom: 0; }
.arc-form__row label {
  font-family: var(--arc-font-jp);
  font-size: 0.95rem;
  color: var(--arc-text);
  padding-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}
.arc-form__required {
  display: inline-flex;
  font-size: 0.7rem;
  background: var(--arc-warn);
  color: var(--arc-base);
  padding: 2px 6px;
  border-radius: 0;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.arc-form__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.arc-form__field input,
.arc-form__field textarea,
.arc-form__field select {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--arc-divider-soft);
  border-radius: var(--arc-radius-sm);
  background: var(--arc-base);
  color: var(--arc-text);
  width: 100%;
  transition: border-color var(--arc-dur-fast);
}
.arc-form__field input:focus,
.arc-form__field textarea:focus,
.arc-form__field select:focus {
  outline: 0;
  border-color: var(--arc-accent);
  box-shadow: 0 0 0 3px var(--arc-accent-soft);
}
.arc-form__hint {
  font-size: 0.78rem;
  color: var(--arc-text-muted);
}
.arc-form__check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
}
.arc-form__check input[type="checkbox"],
.arc-form__check input[type="radio"] {
  width: auto;
  flex-shrink: 0;
  margin-top: 4px;
  padding: 0;
}
.arc-form__check span { flex: 1; min-width: 0; }
.arc-form__submit-row {
  display: flex;
  justify-content: center;
  margin: 36px 0 0;
}
.arc-form__submit {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 56px;
  background: var(--arc-text);
  color: var(--arc-base);
  border: 0;
  border-radius: 0;
  font-family: var(--arc-font-jp);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--arc-dur-fast), transform var(--arc-dur-fast);
}
.arc-form__submit:hover { background: var(--arc-accent-deep); transform: translateY(-2px); }

/* --- TOC (legal, faq) --- */

.arc-toc {
  background: var(--arc-bg-soft);
  border-left: 3px solid var(--arc-accent);
  padding: 22px 28px;
  margin: 0 0 36px;
  font-size: 0.9rem;
}
.arc-toc__title { font-family: var(--arc-font-jp); font-size: 0.95rem; margin: 0 0 12px; color: var(--arc-text); font-weight: 700; }
.arc-toc ul { list-style: none; padding: 0; margin: 0; }
.arc-toc li { margin-bottom: 6px; }
.arc-toc a { color: var(--arc-text); border-bottom: 1px dashed currentColor; transition: color var(--arc-dur-fast); }
.arc-toc a:hover { color: var(--arc-accent-deep); }

/* --- Side Page CTA --- */

.arc-page-cta {
  margin: 56px 0;
  padding: 48px 36px;
  background: var(--arc-bg-deep);
  color: var(--arc-base);
  border-radius: 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.arc-page-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 80%, rgba(0,176,122,0.18), transparent 50%);
  pointer-events: none;
}
.arc-page-cta h3 { font-family: var(--arc-font-jp); font-size: 1.4rem; margin: 0 0 14px; color: var(--arc-base); font-weight: 700; position: relative; }
.arc-page-cta p { margin: 0 0 24px; opacity: 0.9; line-height: 1.85; font-size: 0.95rem; position: relative; }
.arc-page-cta__btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; position: relative; }
.arc-page-cta__btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px;
  border-radius: 0;
  font-weight: 700; font-size: 0.95rem; letter-spacing: 0.06em;
  font-family: var(--arc-font-en);
  transition: background var(--arc-dur-fast), color var(--arc-dur-fast), transform var(--arc-dur-fast);
}
.arc-page-cta__btn--primary { background: var(--arc-accent); color: var(--arc-bg-deep); }
.arc-page-cta__btn--primary:hover { background: #00d493; transform: translateY(-2px); }
.arc-page-cta__btn--ghost { background: transparent; color: var(--arc-base); border: 1px solid rgba(255,255,255,0.5); }
.arc-page-cta__btn--ghost:hover { background: rgba(255,255,255,0.1); border-color: var(--arc-accent); color: var(--arc-accent); }

/* --- Cards Grid (services / faq) --- */

.arc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.arc-card {
  padding: 32px 28px;
  background: var(--arc-base);
  border: 1px solid var(--arc-divider-soft);
  border-radius: 0;
  transition: border-color var(--arc-dur), transform var(--arc-dur), box-shadow var(--arc-dur);
  position: relative;
}
.arc-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 3px;
  background: var(--arc-accent);
  transition: width var(--arc-dur) var(--arc-ease);
}
.arc-card:hover { border-color: var(--arc-text); transform: translateY(-3px); box-shadow: var(--arc-shadow-soft); }
.arc-card:hover::before { width: 100%; }
.arc-card__title { font-family: var(--arc-font-jp); font-size: 1.1rem; margin: 0 0 12px; color: var(--arc-text); font-weight: 700; }
.arc-card__text { margin: 0; font-size: 0.92rem; color: var(--arc-text-sub); line-height: 1.85; }


/* --- Responsive for sub pages --- */
@media (max-width: 768px) {
  .arc-form__row { grid-template-columns: 1fr; gap: 8px; padding: 14px 0; }
  .arc-form__row label { padding-top: 0; }
  .arc-page-hero { padding-top: 110px; padding-bottom: 36px; }
  .arc-page-hero__title { font-size: clamp(1.5rem, 6vw, 2rem); }
  .arc-page-hero__lead { font-size: 0.92rem; }
  .arc-bread { padding: 10px var(--arc-px); }
  .arc-bread__inner { font-size: 0.78rem; }
  .arc-prose { padding-top: 48px; padding-bottom: 64px; font-size: 0.95rem; }
  .arc-prose h2 { font-size: 1.3rem; margin-top: 40px; }
  .arc-prose h3 { font-size: 1.05rem; margin-top: 24px; }
  .arc-table { font-size: 0.85rem; }
  .arc-table th, .arc-table td { padding: 10px 12px; }
  .arc-table th { width: 35%; }
  .arc-page-cta { padding: 32px 24px; margin: 36px 0; }
  .arc-page-cta h3 { font-size: 1.15rem; }
  .arc-page-cta p { font-size: 0.9rem; }
  .arc-page-cta__btns { flex-direction: column; gap: 10px; }
  .arc-page-cta__btn { width: 100%; justify-content: center; }
  .arc-grid { grid-template-columns: 1fr; }
  .arc-toc { padding: 18px 22px; }
}

.arc-table-scroll { overflow-x: auto; margin: 24px 0 32px; -webkit-overflow-scrolling: touch; }
.arc-table-scroll .arc-table { margin: 0; min-width: 520px; }

.arc-bread__inner ol { white-space: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 2px; }


/* --------------------------------------------------------------------------
   26. NEWS LIST / ARTICLE — ブログ感を回避する視覚設計
   -------------------------------------------------------------------------- */

/* カテゴリチップ */
.arc-news-filter {
  max-width: var(--arc-container);
  margin: 0 auto;
  padding: 32px var(--arc-px) 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.arc-news-filter__chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--arc-base);
  border: 1px solid var(--arc-divider-soft);
  border-radius: 0;
  font-family: var(--arc-font-en);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--arc-text-sub);
  transition: all var(--arc-dur-fast);
  cursor: pointer;
  text-transform: uppercase;
}
.arc-news-filter__chip:hover { border-color: var(--arc-accent); color: var(--arc-accent-deep); }
.arc-news-filter__chip.is-active { background: var(--arc-text); color: var(--arc-base); border-color: var(--arc-text); }

/* news 一覧カードグリッド */
.arc-news-list {
  max-width: var(--arc-container);
  margin: 0 auto;
  padding: clamp(40px, 6vh, 64px) var(--arc-px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 32px;
}
.arc-news-list__featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0;
  background: var(--arc-base);
  border: 1px solid var(--arc-text);
  overflow: hidden;
}
@media (max-width: 768px) {
  .arc-news-list__featured { grid-template-columns: 1fr; }
}
.arc-news-list__featured-media { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.arc-news-list__featured-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--arc-ease); }
.arc-news-list__featured:hover .arc-news-list__featured-media img { transform: scale(1.05); }
.arc-news-list__featured-body { padding: 36px 40px; display: flex; flex-direction: column; justify-content: center; }
.arc-news-list__featured-eyebrow {
  font-family: var(--arc-font-en);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: var(--arc-accent);
  font-weight: 700;
  margin: 0 0 14px;
  text-transform: uppercase;
}
.arc-news-list__featured-body h3 {
  font-family: var(--arc-font-jp);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  margin: 0 0 16px;
  line-height: 1.5;
  font-weight: 700;
}
.arc-news-list__featured-body p { color: var(--arc-text-sub); margin: 0 0 22px; line-height: 1.85; font-size: 0.95rem; }
.arc-news-list__featured-meta { display: flex; gap: 14px; align-items: center; font-size: 0.82rem; color: var(--arc-text-muted); }
.arc-news-list__featured-meta time { font-family: var(--arc-font-en); }
.arc-news-list__featured-link { display: inline-flex; align-items: center; gap: 6px; color: var(--arc-accent-deep); font-weight: 700; }

/* 通常 news カード */
.arc-news-card {
  display: block;
  background: var(--arc-base);
  border-radius: 0;
  overflow: hidden;
  border: 1px solid var(--arc-divider-soft);
  transition: transform var(--arc-dur), box-shadow var(--arc-dur), border-color var(--arc-dur);
}
.arc-news-card:hover { transform: translateY(-4px); box-shadow: var(--arc-shadow-card); border-color: var(--arc-text); }
.arc-news-card__media { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.arc-news-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--arc-ease); }
.arc-news-card:hover .arc-news-card__media img { transform: scale(1.06); }
.arc-news-card__cat {
  position: absolute;
  top: 12px; left: 12px;
  padding: 4px 12px;
  background: var(--arc-text);
  color: var(--arc-base);
  font-family: var(--arc-font-en);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.arc-news-card__cat--accent { background: var(--arc-accent); color: var(--arc-bg-deep); }
.arc-news-card__cat--alert { background: var(--arc-warn); color: var(--arc-base); }
.arc-news-card__body { padding: 22px 24px 26px; }
.arc-news-card__date { font-family: var(--arc-font-en); font-size: 0.85rem; color: var(--arc-text-sub); margin: 0 0 8px; letter-spacing: 0.06em; }
.arc-news-card__title { font-family: var(--arc-font-jp); font-size: 1.05rem; margin: 0 0 12px; line-height: 1.55; color: var(--arc-text); font-weight: 700; }
.arc-news-card__excerpt { font-size: 0.88rem; color: var(--arc-text-sub); margin: 0; line-height: 1.75; }

/* 個別記事 — featured image hero */
.arc-article-hero {
  position: relative;
  padding: clamp(140px, 22vh, 220px) var(--arc-px) clamp(60px, 8vh, 100px);
  background: var(--arc-bg-deep);
  color: var(--arc-base);
  overflow: hidden;
  isolation: isolate;
}
.arc-article-hero__bg { position: absolute; inset: 0; z-index: -2; }
.arc-article-hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
.arc-article-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(15,27,45,0.7) 0%, rgba(15,27,45,0.92) 100%);
}
.arc-article-hero__inner { max-width: var(--arc-container-narrow); margin: 0 auto; }
.arc-article-hero__cat {
  display: inline-block;
  padding: 5px 16px;
  background: var(--arc-accent);
  color: var(--arc-bg-deep);
  font-family: var(--arc-font-en);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 18px;
  text-transform: uppercase;
}
.arc-article-hero__title { font-family: var(--arc-font-jp); font-size: clamp(1.7rem, 4vw, 2.6rem); margin: 0 0 22px; line-height: 1.45; font-weight: 700; }
.arc-article-hero__meta { display: flex; gap: 24px; align-items: center; font-size: 0.85rem; opacity: 0.85; flex-wrap: wrap; }
.arc-article-hero__meta time { font-family: var(--arc-font-en); letter-spacing: 0.06em; }
.arc-article-hero__meta-author { display: inline-flex; align-items: center; gap: 8px; }
.arc-article-hero__avatar { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; }

/* 記事本文の callout */
.arc-callout {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 20px 24px;
  background: rgba(208, 74, 23, 0.08);
  border-left: 4px solid var(--arc-warn);
  margin: 24px 0;
}
.arc-callout--info { background: var(--arc-accent-soft); border-left-color: var(--arc-accent); }
.arc-callout__icon { display: flex; align-items: flex-start; color: var(--arc-warn); font-size: 1.5rem; font-weight: 700; }
.arc-callout--info .arc-callout__icon { color: var(--arc-accent-deep); }
.arc-callout__title { font-weight: 700; margin: 0 0 6px; color: var(--arc-text); }
.arc-callout p { margin: 0; font-size: 0.92rem; line-height: 1.85; color: var(--arc-text-sub); }

/* 関連記事 */
.arc-related {
  background: var(--arc-bg-soft);
  padding: clamp(48px, 7vh, 80px) var(--arc-px);
}
.arc-related__inner { max-width: var(--arc-container); margin: 0 auto; }
.arc-related__title {
  font-family: var(--arc-font-jp);
  font-size: 1.4rem;
  text-align: center;
  margin: 0 0 36px;
  font-weight: 700;
  position: relative;
  display: block;
}
.arc-related__title::after {
  content: "";
  display: block;
  width: 36px; height: 2px;
  background: var(--arc-accent);
  margin: 14px auto 0;
}
.arc-related__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }

/* Drop cap (記事先頭) */
.arc-prose .arc-prose__drop::first-letter {
  font-family: var(--arc-font-en);
  font-size: 3.4rem;
  font-weight: 900;
  float: left;
  line-height: 0.85;
  margin: 6px 12px 0 0;
  color: var(--arc-accent);
}


/* --------------------------------------------------------------------------
   27. END
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   27. WP Block FSE Header & Navigation
   -------------------------------------------------------------------------- */

html { overflow-x: hidden; }
.wp-site-blocks { overflow-x: hidden; }

.irodori-header {
  position: sticky;
  top: 0; left: 0; right: 0;
  width: 100%;
  z-index: 800;
  background: transparent;
  color: #fff;
  transition: background 0.4s ease, box-shadow 0.4s ease, color 0.4s ease;
}
.irodori-header.is-scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--arc-shadow-soft);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--arc-text);
}
.irodori-header__inner {
  height: 72px;
  padding: 0 clamp(20px, 4vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.irodori-header__logo .wp-block-site-logo img {
  max-height: 44px;
  width: auto;
}
.irodori-header .wp-block-navigation-item__content {
  color: inherit;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.irodori-header .wp-block-navigation-item__content:hover { opacity: 0.7; }
.irodori-header .wp-block-navigation .wp-block-navigation-item { list-style: none; }
.irodori-header__cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  background: var(--arc-accent-deep);
  color: #fff !important;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  text-decoration: none;
  transition: opacity 0.2s;
}
.irodori-header__cta-btn:hover { opacity: 0.85; }
.irodori-header .wp-block-navigation__responsive-container-open,
.irodori-header .wp-block-navigation__responsive-container-close { display: none !important; }
.irodori-header .wp-block-navigation__responsive-container {
  display: contents !important;
  background: none !important;
}
.wp-site-blocks > * + * { margin-block-start: 0 !important; }
footer .wp-block-navigation { flex-direction: column !important; }
.wp-block-group.irodori-section.is-layout-constrained > *,
.wp-block-group.irodori-section > * {
  max-width: 100% !important;
  width: 100%;
  margin-left: 0 !important;
  margin-right: 0 !important;
}
.wp-block-post-content > .wp-block-group.irodori-section,
.wp-block-post-content > .wp-block-group.irodori-section + .wp-block-group.irodori-section {
  margin-block: 0;
}
@media (max-width: 1100px) {
  .irodori-header__toggle {
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    gap: 6px; width: 34px; height: 34px; cursor: pointer; position: relative;
    z-index: 10001; flex-shrink: 0;
  }
  .irodori-header__toggle span {
    display: block; width: 22px; height: 1.8px;
    background: currentColor; transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .irodori-header__toggle-input { display: none; }
  .wp-block-group.irodori-header__nav {
    display: none; position: fixed; inset: 0;
    background: rgba(255,255,255,0.98); z-index: 10000;
    flex-direction: column; align-items: center; justify-content: center; padding: 40px;
  }
  #irodori-nav-toggle:checked ~ .wp-block-group.irodori-header__nav { display: flex; }
  #irodori-nav-toggle:checked ~ label.irodori-header__toggle span:nth-child(1) {
    transform: translateY(7.8px) rotate(45deg);
  }
  #irodori-nav-toggle:checked ~ label.irodori-header__toggle span:nth-child(2) { opacity: 0; }
  #irodori-nav-toggle:checked ~ label.irodori-header__toggle span:nth-child(3) {
    transform: translateY(-7.8px) rotate(-45deg);
  }
  .irodori-header--hamburger .irodori-header__nav .wp-block-navigation {
    display: flex !important; flex-direction: column; align-items: center; width: 100%;
  }
  .irodori-header--hamburger .irodori-header__nav .wp-block-navigation__container {
    display: flex; flex-direction: column; align-items: center;
    gap: 2rem; list-style: none; margin: 0; padding: 0;
  }
  .irodori-header--hamburger .irodori-header__nav .wp-block-navigation__container a {
    font-size: clamp(18px, 4vw, 24px); font-weight: 600; letter-spacing: 0.06em;
    color: var(--arc-text);
  }
  .irodori-header__cta { margin-top: 32px; }
}

/* ===== WP 7.0 Bug Fixes ===== */

/* ---------------------------------------------------------------
   WP 7.0 Fix: ナビゲーション デスクトップ表示強制
   親テーマ .irodori-header--hamburger が position:fixed/opacity:0 を
   全ブレークポイントに適用するため !important で解除
   --------------------------------------------------------------- */
@media (min-width: 1101px) {
  .irodori-header .wp-block-group.irodori-header__nav {
    position: relative !important;
    opacity: 1 !important;
    visibility: visible !important;
    inset: auto !important;
    background: none !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 24px !important;
    padding: 0 !important;
    z-index: auto !important;
  }
  .irodori-header__toggle {
    display: none !important;
  }
}

/* ---------------------------------------------------------------
   WP 7.0 Fix: ヒーロー背景 全幅解除
   WP is-layout-constrained が max-width:1280px/margin:auto を
   hero bg 要素に適用するため強制解除
   --------------------------------------------------------------- */
.is-layout-constrained > [class*="-hero__bg"],
.is-layout-constrained > [class*="-hero-bg"],
.is-layout-constrained > [class*="-hero__slide"],
.is-layout-constrained > [class*="-hero__image"],
.is-layout-constrained > [class*="-hero__visual"] {
  max-width: none !important;
  width: 100% !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
}