/* 株式会社世紀至誠 — サイト共通：日系ミニマル・軽量モーション */

:root {
  --ss-ink: #0f172a;
  --ss-ink-soft: #334155;
  --ss-paper: #fafaf8;
  --ss-paper-2: #f1f0ec;
  --ss-line: rgba(15, 23, 42, 0.08);
  --ss-primary: #1e4a6f;
  --ss-primary-hover: #163a57;
  --ss-accent: #b8956a;
  --ss-accent-soft: rgba(184, 149, 106, 0.14);
  --ss-secondary: #3d7a6d;
  --ss-radius-lg: 1.25rem;
  --ss-radius-xl: 1.75rem;
  --ss-shadow-1: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --ss-shadow-2: 0 4px 6px rgba(15, 23, 42, 0.03), 0 24px 48px rgba(15, 23, 42, 0.08);
  --ss-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ss-font-sans: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ss-font-en: "Roboto", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body.ss-site {
  font-family: var(--ss-font-sans);
  color: var(--ss-ink);
  background: var(--ss-paper);
  letter-spacing: 0.02em;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.ss-site.font-roboto,
body.ss-site .font-roboto {
  font-family: var(--ss-font-en);
  letter-spacing: 0.03em;
}

/* ページ全体：初期フェード */
body.ss-site {
  opacity: 0;
  animation: ss-page-in 1s var(--ss-ease-out) 0.15s forwards;
}

@keyframes ss-page-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.ss-site {
    opacity: 1;
    animation: none;
  }
}

/* ブートオーバーレイ */
.ss-boot {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(250, 250, 248, 0.96) 0%,
    rgba(241, 240, 236, 0.92) 45%,
    rgba(30, 74, 111, 0.06) 100%
  );
  opacity: 1;
  transition: opacity 0.85s var(--ss-ease-out), visibility 0.85s;
}

.ss-boot.ss-boot--done {
  opacity: 0;
  visibility: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .ss-boot {
    display: none;
  }
}

/* 背景オーブ（ヒーロー） */
.ss-hero-ambient {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.ss-hero-ambient__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(72px);
  opacity: 0.45;
  will-change: transform;
}

.ss-hero-ambient__blob--a {
  width: min(52vw, 420px);
  height: min(52vw, 420px);
  top: -12%;
  right: -8%;
  background: radial-gradient(circle at 30% 30%, rgba(30, 74, 111, 0.35), transparent 70%);
}

.ss-hero-ambient__blob--b {
  width: min(48vw, 380px);
  height: min(48vw, 380px);
  bottom: -18%;
  left: -10%;
  background: radial-gradient(circle at 70% 60%, rgba(61, 122, 109, 0.22), transparent 72%);
}

.ss-hero-ambient__blob--c {
  width: min(36vw, 280px);
  height: min(36vw, 280px);
  top: 38%;
  left: 40%;
  background: radial-gradient(circle at 50% 50%, rgba(184, 149, 106, 0.12), transparent 65%);
}

/* ナビ：ガラス & スクロール */
#navbar.ss-nav {
  background: rgba(250, 250, 248, 0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  box-shadow: none;
  transition:
    background 0.45s var(--ss-ease-out),
    border-color 0.45s var(--ss-ease-out),
    box-shadow 0.45s var(--ss-ease-out);
}

#navbar.ss-nav.ss-nav--solid {
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: var(--ss-line);
  box-shadow: var(--ss-shadow-1);
}

#navbar.ss-nav .nav-inner {
  transition: transform 0.5s var(--ss-ease-out);
}

#navbar.ss-nav.ss-nav--solid .nav-inner {
  transform: translateY(0);
}

/* スクロール連動セクション（コンテナ直下の子） */
.ss-section:not(.ss-section--visible) > .container > * {
  opacity: 0;
  transform: translate3d(0, 1.15rem, 0);
  filter: blur(3px);
  transition:
    opacity 0.75s var(--ss-ease-out),
    transform 0.75s var(--ss-ease-out),
    filter 0.75s var(--ss-ease-out);
  transition-delay: var(--ss-stagger, 0ms);
}

.ss-section.ss-section--visible > .container > * {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  filter: blur(0);
  transition:
    opacity 0.75s var(--ss-ease-out),
    transform 0.75s var(--ss-ease-out),
    filter 0.75s var(--ss-ease-out);
  transition-delay: var(--ss-stagger, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  .ss-section:not(.ss-section--visible) > .container > * {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
  }

  .ss-section.ss-section--visible > .container > * {
    transition: none;
  }

  .ss-img-wrap img {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ニュースバー */
.ss-news-bar {
  border-color: var(--ss-line);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.95), rgba(241, 240, 236, 0.6));
}

/* カード／ボタン共通 */
.ss-card {
  border-radius: var(--ss-radius-xl);
  box-shadow: var(--ss-shadow-1);
  border: 1px solid rgba(15, 23, 42, 0.06);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(8px);
  transition:
    transform 0.45s var(--ss-ease-out),
    box-shadow 0.45s var(--ss-ease-out),
    border-color 0.45s var(--ss-ease-out),
    background 0.45s var(--ss-ease-out);
}

.ss-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--ss-shadow-2);
  border-color: rgba(30, 74, 111, 0.12);
}

@media (prefers-reduced-motion: reduce) {
  .ss-card:hover {
    transform: none;
  }
}

.ss-btn-primary {
  border-radius: var(--ss-radius-lg);
  transition:
    transform 0.35s var(--ss-ease-out),
    box-shadow 0.35s var(--ss-ease-out),
    background-color 0.35s var(--ss-ease-out);
}

.ss-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(30, 74, 111, 0.22);
}

.ss-btn-outline {
  transition:
    transform 0.35s var(--ss-ease-out),
    background-color 0.35s var(--ss-ease-out),
    color 0.35s var(--ss-ease-out),
    border-color 0.35s var(--ss-ease-out),
    box-shadow 0.35s var(--ss-ease-out);
}

.ss-btn-outline:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(30, 74, 111, 0.12);
}

/* 画像：ロード後フェード */
.ss-img-wrap {
  position: relative;
  overflow: hidden;
  border-radius: inherit;
}

.ss-img-wrap img {
  opacity: 0;
  transform: scale(1.03);
  transition:
    opacity 0.9s var(--ss-ease-out),
    transform 1s var(--ss-ease-out);
}

.ss-img-wrap img.ss-img--loaded {
  opacity: 1;
  transform: scale(1);
}

/* ヒーロー画像枠 */
.ss-hero-frame {
  border-radius: 2rem;
  box-shadow:
    0 32px 64px -16px rgba(15, 23, 42, 0.18),
    0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  transition: transform 0.6s var(--ss-ease-out), box-shadow 0.6s var(--ss-ease-out);
}

.ss-hero-frame:hover {
  transform: translateY(-6px) rotate(-0.25deg);
  box-shadow:
    0 40px 72px -20px rgba(15, 23, 42, 0.22),
    0 0 0 1px rgba(255, 255, 255, 0.55) inset;
}

@media (prefers-reduced-motion: reduce) {
  .ss-hero-frame:hover {
    transform: none;
  }
}

/* パララックス用ラッパ */
.ss-parallax {
  will-change: transform;
}

/* フッター：わずかな深度 */
footer.ss-footer {
  background: linear-gradient(180deg, #121826 0%, #0b0f18 100%);
}

/* トップへ戻る */
#back-to-top.ss-fab {
  border-radius: 999px;
  transition:
    opacity 0.35s var(--ss-ease-out),
    transform 0.35s var(--ss-ease-out),
    box-shadow 0.35s var(--ss-ease-out);
}

#back-to-top.ss-fab:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(30, 74, 111, 0.35);
}

/* モバイル下部バー */
.ss-mobile-bar {
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
}

/* 法務ページ */
body.ss-legal {
  min-height: 100vh;
  font-family: var(--ss-font-sans);
  color: var(--ss-ink);
  letter-spacing: 0.02em;
  line-height: 1.8;
  background: linear-gradient(165deg, var(--ss-paper) 0%, var(--ss-paper-2) 55%, rgba(30, 74, 111, 0.04) 100%);
  opacity: 0;
  animation: ss-page-in 0.9s var(--ss-ease-out) 0.1s forwards;
}

.ss-legal-inner {
  max-width: 52rem;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

.ss-legal-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ss-primary);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(30, 74, 111, 0.18);
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(10px);
  transition:
    transform 0.35s var(--ss-ease-out),
    box-shadow 0.35s var(--ss-ease-out),
    border-color 0.35s var(--ss-ease-out);
}

.ss-legal-back:hover {
  transform: translateX(-3px);
  box-shadow: var(--ss-shadow-1);
  border-color: rgba(30, 74, 111, 0.35);
}

.ss-legal-card {
  margin-top: 1.75rem;
  padding: 2rem 1.5rem;
  border-radius: var(--ss-radius-xl);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--ss-line);
  box-shadow: var(--ss-shadow-2);
  backdrop-filter: blur(10px);
}

@media (min-width: 768px) {
  .ss-legal-card {
    padding: 2.5rem 2.75rem;
  }
}

.ss-legal-title {
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid rgba(30, 74, 111, 0.35);
  letter-spacing: 0.04em;
}

.ss-legal section h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 1.75rem 0 0.75rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--ss-primary);
}

@media (prefers-reduced-motion: reduce) {
  body.ss-legal {
    opacity: 1;
    animation: none;
  }

  .ss-legal-back:hover {
    transform: none;
  }
}

/* Tailwind 既存ユーティリティを上書き：ホバー深度 */
body.ss-site .hover-lift {
  transition:
    transform 0.45s var(--ss-ease-out),
    box-shadow 0.45s var(--ss-ease-out),
    border-color 0.45s var(--ss-ease-out);
}

body.ss-site .hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--ss-shadow-2);
}

@media (prefers-reduced-motion: reduce) {
  body.ss-site .hover-lift:hover {
    transform: none;
  }
}

/* ========== CenturyHuaying 美化方針对齐：加载条・嵌套浮现・palt・地図・ナビ ========== */

body.ss-site,
body.ss-legal {
  font-feature-settings: "palt" 1;
}

#ss-boot::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(30, 74, 111, 0.5),
    rgba(61, 122, 109, 0.4),
    transparent
  );
  transform-origin: left;
  animation: ss-boot-bar 1.12s var(--ss-ease-out) infinite;
  opacity: 0.9;
}

@keyframes ss-boot-bar {
  0% {
    transform: scaleX(0.14) translateX(-18%);
    opacity: 0.65;
  }
  50% {
    transform: scaleX(0.52) translateX(6%);
    opacity: 1;
  }
  100% {
    transform: scaleX(0.2) translateX(115%);
    opacity: 0.55;
  }
}

@media (prefers-reduced-motion: reduce) {
  #ss-boot::after {
    animation: none;
    opacity: 0;
    visibility: hidden;
  }
}

/* ネストしたカード／ブロックのスクロール浮现 */
.ss-reveal {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition:
    opacity 0.78s var(--ss-ease-out),
    transform 0.78s var(--ss-ease-out);
  transition-delay: var(--ss-reveal-delay, 0ms);
}

.ss-reveal.ss-reveal--visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(1) {
  transition-delay: 0.04s;
}
.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(2) {
  transition-delay: 0.1s;
}
.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(3) {
  transition-delay: 0.16s;
}
.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(4) {
  transition-delay: 0.22s;
}
.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(5) {
  transition-delay: 0.28s;
}
.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(6) {
  transition-delay: 0.34s;
}

.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(7) {
  transition-delay: 0.4s;
}

.ss-reveal-group.ss-reveal-group--visible .ss-reveal:nth-child(8) {
  transition-delay: 0.46s;
}

.ss-reveal-group.ss-reveal-group--visible .ss-reveal {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

@media (prefers-reduced-motion: reduce) {
  .ss-reveal,
  .ss-reveal-group .ss-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* Google マップ枠：軽い浮き・影 */
.ss-map-frame {
  transition:
    box-shadow 0.5s var(--ss-ease-out),
    transform 0.5s var(--ss-ease-out);
}

.ss-map-frame:hover {
  box-shadow: var(--ss-shadow-2);
  transform: translateY(-3px);
}

@media (prefers-reduced-motion: reduce) {
  .ss-map-frame:hover {
    transform: none;
  }
}

/* デスクトップナビ：グラデーション下線（CH 系） */
#navbar.ss-nav .nav-link {
  position: relative;
}

#navbar.ss-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--ss-primary), rgba(61, 122, 109, 0.85));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.42s var(--ss-ease-out);
}

#navbar.ss-nav .nav-link:hover::after,
#navbar.ss-nav .nav-link.nav-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* FAQ：開閉時の背景トーン */
body.ss-site details summary {
  transition: background-color 0.28s ease, color 0.28s ease;
}

body.ss-site details[open] summary {
  background-color: rgba(30, 74, 111, 0.05);
}

/* 法令カード：奥行き */
body.ss-legal .ss-legal-card {
  transition:
    box-shadow 0.5s var(--ss-ease-out),
    transform 0.5s var(--ss-ease-out),
    border-color 0.45s var(--ss-ease-out);
}

body.ss-legal .ss-legal-card.ss-reveal--visible:hover {
  box-shadow: 0 28px 56px rgba(15, 23, 42, 0.1);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  body.ss-legal .ss-legal-card.ss-reveal--visible:hover {
    transform: none;
  }
}