/* =====================================
   Y2KHOME TOP v1.1  統合スタイル（最適化・整理版）
   ※重複排除／!important極力ゼロ／見た目は現状の最終状態を維持
   セクション順：
   1) 共通
   2) HERO
   3) SERVICE
   4) PRICE
   5) BASIC TROUBLE
   6) SELF INTRO / INTRO BAND
   7) 工事までの流れ
   8) 施工事例
   9) COMPANY BAND
   10) DUCT PLAN
   11) SNS BAND
   12) 共通：見出し下線
   13) SERVICE：矢印
   14) 共通：スクロールアニメ
   15) SP：文字サイズ微調整
===================================== */

/* -------------------------------------
   1) 共通レイアウト・コンポーネント
------------------------------------- */

.y2k-container,
.y2k-ref-wrap,
.y2k-price-wrap,
.y2k-basic-wrap,
.y2k-duct-wrap,
.y2k-hero-inner {
  max-width: none;
  margin: 0 auto;
  padding: 0 16px;
}

.y2k-ref,
.y2k-price,
.y2k-basic-trouble,
.y2k-duct-top,
.y2k-hero {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Arial, "Noto Sans JP", sans-serif;
  color: #0f172a;
}

/* 共通ボタン */
.y2k-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: 0.18s ease;
  cursor: pointer;
  white-space: nowrap;
}

/* LINEボタン */
.y2k-btn--line {
  background: #06c755;
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(22, 163, 74, 0.35);
}
.y2k-btn--line:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(22, 163, 74, 0.45);
}

/* メイン青ボタン */
.y2k-btn--primary {
  background: #2563eb;
  color: #ffffff;
  border: 1px solid transparent;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.3);
}
.y2k-btn--primary:hover {
  background: #1e54cd;
  transform: translateY(-1px);
}

/* ゴースト */
.y2k-btn--ghost {
  background: rgba(255, 255, 255, 0.9);
  color: #1f2937;
  border-color: rgba(148, 163, 184, 0.7);
}
.y2k-btn--ghost:hover {
  background: #ffffff;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.12);
}

/* -------------------------------------
   HERO（参考デザイン寄せ：ワイド字間＋水だけ色）
   HTMLはそのまま（.y2k-hero-catch / .y2k-hero-big / em）でOK
------------------------------------- */

.y2k-hero {
  position: relative;
  min-height: 72vh;
  padding: 120px 0 96px;
  overflow: hidden;
}

/* 背景画像はそのまま */
.y2k-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("https://y2khome.jp/wp-content/uploads/2025/11/hero.jpg");
  background-size: cover;
  background-position: center;
  opacity: 1;
  z-index: -2;
}

/* 参考っぽい「青みのフィルター＋読みやすさ」 */
.y2k-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
      to bottom,
      rgba(8, 20, 34, 0.2),
      rgba(8, 20, 34, 0.1)
    ),
    radial-gradient(
      120% 120% at 50% 35%,
      rgba(255, 255, 255, 0.1) 0%,
      rgba(255, 255, 255, 0) 55%
    ),
    rgba(16, 120, 150, 0.18); /* ほんのり青緑トーン */
}

/* テキスト全体 */
.y2k-hero-handwrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* -------------------------
   上の小さい説明（catch）
   ※参考は「控えめ・読みやすい」なので軽めに
------------------------- */
.y2k-hero-catch {
  margin: 0 0 20px;
  color: rgba(255, 255, 255, 0.92);
  text-align: center;
}

.y2k-hero-catch-line {
  display: block;
  font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Arial,
    sans-serif;
  font-weight: 700;
  font-size: clamp(15px, 1.6vw, 18px);
  letter-spacing: 0.1em;
  line-height: 1.55;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.y2k-hero-catch-brand {
  display: block;
  margin-top: 6px;
  font-weight: 800;
  letter-spacing: 0.18em;
  font-size: clamp(14px, 1.4vw, 16px);
  opacity: 0.95;
}

/* -------------------------
   メイン見出し（big）
   参考の「デカい・字間広い・整列した3行」感
------------------------- */
.y2k-hero-big {
  margin: 0;
  text-align: center;
}

.y2k-hero-big-line {
  display: block;
  font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Arial,
    sans-serif;

  /* 参考は“太字すぎない”けど存在感ある＝700〜800が近い */
  font-weight: 800;

  /* ここが一番重要：字間をガッツリ広げる */
  letter-spacing: 0.26em;

  /* 行間は詰めすぎない（参考の余白感） */
  line-height: 1.25;

  /* サイズ：PCは大きく、SPはさらに大きく見えるように */
  font-size: clamp(44px, 5.4vw, 72px);

  color: rgba(255, 255, 255, 0.96);

  /* 参考の“白文字が浮く”感じ：影は強すぎず柔らかく */
  text-shadow: 0 8px 26px rgba(0, 0, 0, 0.35), 0 2px 8px rgba(0, 0, 0, 0.28);

  /* 行ごとの間隔 */
  margin: 10px 0;
}

/* 「水」だけ水色に */
.y2k-hero-big-line em {
  font-style: normal;
  color: #55d6ff; /* 参考の水色寄せ */
  letter-spacing: 0.26em;

  text-shadow: 0 10px 28px rgba(0, 0, 0, 0.32),
    0 0 22px rgba(85, 214, 255, 0.35);
}

/* -------------------------
   モバイル：さらに“でかく・読みやすく”
------------------------- */
@media (max-width: 767px) {
  .y2k-hero {
    min-height: 100svh;
    padding: 96px 0 72px;
  }

  .y2k-hero::before {
    background-position: center 22%;
  }

  .y2k-hero-catch-line {
    font-size: 15px;
    letter-spacing: 0.08em;
  }

  .y2k-hero-big-line {
    font-size: clamp(42px, 10vw, 56px);
    letter-spacing: 0.22em; /* SPは広すぎると読みにくいので少しだけ抑える */
    margin: 12px 0;
  }

  .y2k-hero-big-line em {
    letter-spacing: 0.22em;
  }
}

/* 動きが苦手な人への配慮 */
@media (prefers-reduced-motion: reduce) {
  .y2k-hero * {
    animation: none !important;
    transition: none !important;
  }
}

/* -------------------------------------
   3) SERVICE（サービス一覧フル幅行）
------------------------------------- */

.y2k-ref-service {
  position: relative;
  padding: 96px 0;
  background: #e5efff;
  overflow: hidden;
}

.y2k-ref-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.y2k-ref-sec-head {
  margin: 0 0 32px;
  text-align: center;
}
.y2k-ref-eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: #6b7280;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.y2k-ref-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
  color: #0f172a;
}
.y2k-ref-lead {
  max-width: 620px;
  font-size: 14px;
  line-height: 1.8;
  color: #6b7280;
  margin-left: auto;
  margin-right: auto;
}

/* フル幅 */
.y2k-ref-service-list {
  display: flex;
  flex-direction: column;
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding: 0;
  gap: 0;
}

.y2k-ref-service-row {
  position: relative;
  display: block;
  width: 100%;
  min-height: 260px;
  text-decoration: none;
  color: #0f172a;
  overflow: hidden;
  border-radius: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.y2k-ref-service-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.82;
  z-index: 0;
}

.y2k-ref-service-row::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0.35) 0%,
    rgba(255, 255, 255, 0.2) 35%,
    rgba(255, 255, 255, 0.05) 100%
  );
  backdrop-filter: blur(2px);
  z-index: 1;
}

.y2k-ref-service-row-inner {
  position: relative;
  z-index: 2;
  padding: 40px 48px;
  padding-right: 64px; /* 矢印ぶん */
}

.y2k-ref-service-tag {
  display: none;
}

.y2k-ref-service-row-title {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 6px;
  line-height: 1.4;
  color: #ffffff;
  letter-spacing: 0.04em;
  text-shadow: 0 3px 12px rgba(0, 0, 0, 0.75);
}

.y2k-ref-service-row-text {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
}

.y2k-ref-service-row:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}

/* 背景画像割り当て */
.y2k-ref-service-row--equipment::before {
  background-image: url("https://y2khome.jp/wp-content/uploads/2025/11/kiki.jpg");
}
.y2k-ref-service-row--leak::before {
  background-image: url("https://y2khome.jp/wp-content/uploads/2025/11/more.jpg");
}
.y2k-ref-service-row--reform1::before {
  background-image: url("https://y2khome.jp/wp-content/uploads/2025/12/1.png");
}
.y2k-ref-service-row--duct::before {
  background-image: url("https://y2khome.jp/wp-content/uploads/2025/11/duct.jpg");
}
.y2k-ref-service-row--reform2::before {
  background-image: url("https://y2khome.jp/wp-content/uploads/2025/11/reform.jpg");
}

@media (max-width: 767px) {
  .y2k-ref-service {
    padding: 72px 0;
  }
  .y2k-ref-service-row {
    min-height: 220px;
  }
  .y2k-ref-service-row-inner {
    padding: 26px 20px;
    padding-right: 48px;
  }
  .y2k-ref-service-row-title {
    font-size: 20px;
  }
  .y2k-ref-service-row-text {
    font-size: 14px;
    line-height: 1.8;
  }
}

/* -------------------------------------
   4) PRICE（設備機器交換スライダー）
------------------------------------- */

.y2k-price {
  position: relative;
  padding: 80px 0 90px;
  background: #eef3ff;
}

.y2k-price-head {
  text-align: center;
  margin-bottom: 28px;
}
.y2k-price-eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 6px;
}
.y2k-price-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
}
.y2k-price-lead {
  font-size: 13px;
  color: #6b7280;
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.8;
}

.y2k-price-slider {
  margin-top: 26px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.y2k-price-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 260px);
  gap: 16px;
  scroll-snap-type: x mandatory;
  padding: 4px 2px 10px;
}

.y2k-price-card {
  scroll-snap-align: start;
  background: #ffffff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.16);
  display: flex;
  flex-direction: column;
}

.y2k-price-img {
  position: relative;
  padding-top: 62%;
  overflow: hidden;
}
.y2k-price-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.y2k-price-body {
  padding: 14px 16px 16px;
}
.y2k-price-tag {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 4px;
}
.y2k-price-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}
.y2k-price-point {
  margin: 0 0 10px;
  padding-left: 1.1em;
  font-size: 12px;
  color: #6b7280;
  line-height: 1.6;
}

.y2k-price-value {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: baseline;
  font-size: 13px;
  color: #4b5563;
}
.y2k-price-value span {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.06);
  color: #2563eb;
  font-size: 11px;
  font-weight: 600;
}
.y2k-price-value strong {
  font-size: 18px;
  font-weight: 800;
  color: #111827;
}

.y2k-price-btns {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.y2k-price-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 7px 14px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  transition: 0.18s ease;
  white-space: nowrap;
}
.y2k-price-btn--primary {
  background: #2563eb;
  color: #fff;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}
.y2k-price-btn--primary:hover {
  background: #1e54cd;
  transform: translateY(-2px);
}
.y2k-price-btn--line {
  background: #06c755;
  color: #fff;
  box-shadow: 0 6px 16px rgba(6, 199, 85, 0.25);
}
.y2k-price-btn--line:hover {
  background: #04a946;
  transform: translateY(-2px);
}

.y2k-price-card:hover .y2k-price-img img {
  transform: scale(1.06);
}

@media (min-width: 1024px) {
  .y2k-price-track {
    grid-auto-columns: minmax(220px, 260px);
    justify-content: flex-start;
  }
}
@media (max-width: 767px) {
  .y2k-price {
    padding: 64px 0 72px;
  }
  .y2k-price-track {
    grid-auto-columns: minmax(68%, 72%);
  }
}

/* -------------------------------------
   5) BASIC PRICE / 漏水・詰まり基本料金
------------------------------------- */

.y2k-basic-trouble {
  padding: 80px 0 90px;
  background: #ffffff;
}

.y2k-basic-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.y2k-basic-head {
  margin-bottom: 24px;
  text-align: center;
}
.y2k-basic-eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 6px;
}
.y2k-basic-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
  color: #0f172a;
}
.y2k-basic-lead {
  font-size: 13px;
  color: #4b5563;
  max-width: 640px;
  line-height: 1.9;
  margin-left: auto;
  margin-right: auto;
}

.y2k-basic-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.y2k-basic-card {
  position: relative;
  border-radius: 18px;
  padding: 18px 18px 20px;
  background: #ffffff;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.1);
  overflow: hidden;
}

.y2k-basic-name {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.55), 0 6px 18px rgba(0, 0, 0, 0.45);
}

.y2k-basic-value {
  font-size: 16px;
  margin-bottom: 6px;
}

/* ラベル */
.y2k-basic-value span {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  margin-right: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(11, 42, 74, 0.92);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* 料金：白文字＋赤フチ＋影 */
.y2k-basic-card.has-bg .y2k-basic-value strong {
  color: #ffffff;
  font-size: 18px;
  font-weight: 900;
  -webkit-text-stroke: 1.2px #ff3b30;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.55), 0 0 8px rgba(255, 59, 48, 0.45);
}

.y2k-basic-text {
  font-size: 13px;
  line-height: 1.8;
  color: #4b5563;
}

.y2k-basic-notes {
  margin-top: 20px;
  font-size: 15px;
  color: #6b7280;
  line-height: 1.8;
}

/* 背景画像付きカード */
.y2k-basic-card.has-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--bg, none);
  background-size: cover;
  background-position: center;
  opacity: 0.55;
  filter: brightness(0.7);
}
.y2k-basic-card.has-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.25) 0%,
    rgba(0, 0, 0, 0.45) 60%,
    rgba(0, 0, 0, 0.6) 100%
  );
}

/* このセクションは写真カード前提で白文字に（strongは上の指定で維持） */
.y2k-basic-card.has-bg {
  color: #fff;
}
.y2k-basic-card.has-bg .y2k-basic-name,
.y2k-basic-card.has-bg .y2k-basic-value,
.y2k-basic-card.has-bg .y2k-basic-text,
.y2k-basic-card.has-bg .y2k-basic-value span {
  color: #fff;
  position: relative;
  z-index: 2;
}
.y2k-basic-card.has-bg .y2k-basic-value strong {
  position: relative;
  z-index: 2;
}

@media (max-width: 1023px) {
  .y2k-basic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 767px) {
  .y2k-basic-trouble {
    padding: 64px 0 72px;
  }
  .y2k-basic-grid {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------
   6) SELF INTRO / INTRO BAND
------------------------------------- */

.y2k-intro-band {
  position: relative;
  padding: 80px 0 90px;
  overflow: hidden;
  background: #ffffff;
}

.y2k-intro-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("https://picsum.photos/id/1041/1600/900");
  background-size: cover;
  background-position: center;
  opacity: 0.9;
  z-index: -2;
}

.y2k-intro-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    130% 140% at 0% 0%,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 255, 255, 0.93) 35%,
    rgba(255, 255, 255, 0.8) 60%,
    rgba(255, 255, 255, 0.55) 100%
  );
  backdrop-filter: blur(6px);
  z-index: -1;
}

.y2k-intro-band-inner {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.y2k-intro-band-head {
  margin-bottom: 28px;
  text-align: center;
}
.y2k-intro-band-eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 6px;
}
.y2k-intro-band-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
  color: #0f172a;
}
.y2k-intro-band-lead {
  font-size: 13px;
  color: #4b5563;
  max-width: 640px;
  line-height: 1.9;
  margin-left: auto;
  margin-right: auto;
}

.y2k-intro-band-features {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.y2k-intro-band-item {
  position: relative;
  border-radius: 20px;
  padding: 18px 18px 20px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.7);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.15);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.y2k-intro-band-icon {
  width: 54px;
  height: 54px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0%, #93c5fd, #2563eb);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.y2k-intro-band-icon img {
  width: 70%;
  height: 70%;
  object-fit: contain;
  display: block;
}
.y2k-intro-band-icon-num {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.y2k-intro-band-item-title {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.5;
}
.y2k-intro-band-item-text {
  font-size: 13px;
  color: #4b5563;
  line-height: 1.9;
}

.y2k-intro-band-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 46px rgba(15, 23, 42, 0.2);
  transition: 0.18s ease;
}

@media (max-width: 767px) {
  .y2k-intro-band {
    padding: 64px 0 72px;
  }
  .y2k-intro-band-features {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------
   7) 工事完了までの流れ
------------------------------------- */

.top-flow {
  background: #e8f1ff;
  padding: 80px 0;
}

.top-flow .top-container {
  max-width: 920px;
}

.flow-steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  position: relative;
}

.flow-steps::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    rgba(148, 163, 184, 0.7),
    rgba(226, 232, 240, 0.2)
  );
}

.flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  column-gap: 20px;
  row-gap: 4px;
  padding: 18px 0;
}

.flow-step + .flow-step {
  border-top: 1px solid rgba(209, 213, 219, 0.7);
}

.flow-step__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: flex-start;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #1d4ed8;
  background: #ffffff;
  border: 1px solid rgba(59, 130, 246, 0.45);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

.flow-step__title {
  grid-column: 2;
  grid-row: 1;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  color: #111827;
}

.flow-step__text {
  grid-column: 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.9;
  color: #4b5563;
}

@media (max-width: 767px) {
  .top-flow {
    padding: 64px 0 72px;
  }
  .flow-steps::before {
    left: 24px;
  }
  .flow-step {
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 14px;
    padding: 16px 0;
  }
  .flow-step__num {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }
}

/* -------------------------------------
   8) WORKS / 施工事例カード
------------------------------------- */

.top-works {
  padding: 80px 0 90px;
  background: #ffffff;
}

.top-works-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.top-works-head {
  text-align: left;
  margin-bottom: 28px;
}

.top-works-eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 6px;
}

.top-works-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
  color: #0f172a;
}

.top-works-lead {
  font-size: 13px;
  color: #4b5563;
  max-width: 640px;
  line-height: 1.9;
}

.works-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.works-card {
  position: relative;
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.55);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
  overflow: hidden;
  transition: transform 0.16s ease, box-shadow 0.16s ease,
    border-color 0.16s ease;
}

.works-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.works-card__thumb {
  position: relative;
  overflow: hidden;
}
.works-card__thumb img {
  display: block;
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.works-card__noimg {
  width: 100%;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #9ca3af;
  background: linear-gradient(135deg, #e5e7eb, #f3f4f6);
}

.works-card__body {
  padding: 14px 16px 16px;
}
.works-card__date {
  display: block;
  font-size: 11px;
  color: #6b7280;
  margin-bottom: 4px;
}
.works-card__title {
  font-size: 15px;
  font-weight: 700;
  color: #111827;
  line-height: 1.6;
}

.works-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 50px rgba(15, 23, 42, 0.18);
  border-color: rgba(59, 130, 246, 0.7);
}

.top-works-more {
  margin-top: 28px;
  text-align: center;
}
.top-works-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 26px;
  font-size: 13px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.9);
  background: #ffffff;
  color: #111827;
  text-decoration: none;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.08);
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease,
    transform 0.15s ease;
}
.top-works-more-btn:hover {
  background: #111827;
  color: #ffffff;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.2);
  transform: translateY(-2px);
}

@media (max-width: 1023px) {
  .works-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 767px) {
  .top-works {
    padding: 64px 0 72px;
  }
  .works-grid {
    grid-template-columns: 1fr;
  }
  .works-card__thumb img,
  .works-card__noimg {
    height: 180px;
  }
}

/* -------------------------------------
   9) COMPANY BAND（会社情報ミニ帯）
------------------------------------- */

.y2k-company-band {
  position: relative;
  padding: 80px 0;
  color: #ffffff;
  background-image: url("https://y2khome.jp/wp-content/uploads/2024/11/82d589023c469759472f92605cc66934.png");
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.y2k-company-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 121, 157, 0.82);
  mix-blend-mode: multiply;
}

.y2k-company-band__inner {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.y2k-company-band__copy {
  flex: 1 1 55%;
}
.y2k-company-band__eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 8px;
  opacity: 0.9;
}
.y2k-company-band__title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.y2k-company-band__lead {
  font-size: 14px;
  line-height: 1.9;
  opacity: 0.95;
}

.y2k-company-band__cta {
  flex: 0 0 280px;
  text-align: left;
}
.y2k-company-band__small {
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 16px;
  opacity: 0.9;
}
.y2k-company-band__btn {
  min-width: 200px;
  justify-content: center;
}

@media (max-width: 767px) {
  .y2k-company-band {
    padding: 56px 0;
  }
  .y2k-company-band__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
  .y2k-company-band__title {
    font-size: 24px;
  }
  .y2k-company-band__cta {
    width: 100%;
  }
  .y2k-company-band__btn {
    width: 100%;
  }
}

/* -------------------------------------
   10) DUCT PLAN（ダクト清掃料金表）
------------------------------------- */

.y2k-duct-plan {
  padding: 80px 0 90px;
  background: #ffffff;
}

.y2k-duct-plan-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.y2k-duct-plan-head {
  text-align: center;
  margin-bottom: 32px;
}
.y2k-duct-plan-eyebrow {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 6px;
}
.y2k-duct-plan-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  color: #111827;
}
.y2k-duct-plan-lead {
  font-size: 13px;
  color: #4b5563;
  max-width: 660px;
  margin: 0 auto;
  line-height: 1.9;
}

.y2k-duct-plan-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.y2k-duct-plan-card {
  position: relative;
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-top: 4px solid #cbd5f5;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  padding: 22px 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    border-color 0.18s ease;
}

.y2k-duct-plan-card--featured {
  border-top-color: #f59e0b;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
  transform: translateY(-2px);
}

.y2k-duct-plan-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 999px;
  background: #e5edff;
  color: #1d4ed8;
  letter-spacing: 0.08em;
}
.y2k-duct-plan-card--featured .y2k-duct-plan-label {
  background: #fef3c7;
  color: #b45309;
}

.y2k-duct-plan-name {
  font-size: 16px;
  font-weight: 700;
  color: #111827;
}

.y2k-duct-plan-list {
  margin: 6px 0 4px;
  padding-left: 1.1em;
  font-size: 13px;
  color: #4b5563;
  line-height: 1.7;
}
.y2k-duct-plan-list li {
  position: relative;
}
.y2k-duct-plan-list li::before {
  content: "•";
  position: absolute;
  left: -0.9em;
  top: 0;
  font-size: 14px;
  color: #9ca3af;
}
.y2k-duct-plan-card--featured .y2k-duct-plan-list li::before {
  color: #f59e0b;
}
.y2k-duct-plan-list li + li {
  margin-top: 3px;
}

.y2k-duct-plan-price {
  margin-top: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #111827;
}
.y2k-duct-plan-price span {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: #6b7280;
  margin-bottom: 2px;
}
.y2k-duct-plan-price strong {
  display: block;
  font-size: 22px;
  letter-spacing: 0.03em;
}

.y2k-duct-plan-note {
  margin-top: 4px;
  font-size: 11px;
  color: #6b7280;
  line-height: 1.7;
}

.y2k-duct-plan-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.18);
}

.y2k-duct-plan-footnote {
  margin-top: 20px;
  font-size: 11px;
  color: #6b7280;
  line-height: 1.8;
  text-align: center;
}

.y2k-duct-plan-cta {
  margin-top: 28px;
  text-align: center;
}
.y2k-duct-plan-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 30px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  color: #111827;
  text-decoration: none;
  background: linear-gradient(135deg, #facc15, #eab308);
  box-shadow: 0 14px 30px rgba(234, 179, 8, 0.35);
  transition: 0.18s ease;
}
.y2k-duct-plan-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(234, 179, 8, 0.45);
}

@media (max-width: 1023px) {
  .y2k-duct-plan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 767px) {
  .y2k-duct-plan {
    padding: 64px 0 72px;
  }
  .y2k-duct-plan-grid {
    grid-template-columns: 1fr;
  }
  .y2k-duct-plan-title {
    font-size: 22px;
  }
}

/* -------------------------------------
   11) SNS BAND（LINE / Instagram）
------------------------------------- */

.y2k-sns-band {
  position: relative;
  padding: 90px 0;
  color: #ffffff;
  overflow: hidden;
}

.y2k-sns-inner {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.y2k-sns-text {
  flex: 1 1 auto;
}
.y2k-sns-eyebrow {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 10px;
  opacity: 0.9;
}
.y2k-sns-title {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}
.y2k-sns-lead {
  font-size: 14px;
  line-height: 1.9;
  max-width: 640px;
  opacity: 0.9;
}

.y2k-sns-side {
  flex: 0 0 280px;
  text-align: right;
}
.y2k-sns-side-text {
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 18px;
  opacity: 0.9;
}

.y2k-sns-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  box-shadow: 0 14px 35px rgba(15, 23, 42, 0.35);
  white-space: nowrap;
}

.y2k-sns-btn--primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
}
.y2k-sns-btn--line {
  background: linear-gradient(135deg, #16a34a, #059669);
  color: #ffffff;
}
.y2k-sns-btn--ghost {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: none;
}
.y2k-sns-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.45);
}

.y2k-sns-band--reverse .y2k-sns-inner {
  flex-direction: row-reverse;
}
.y2k-sns-band--reverse .y2k-sns-side {
  text-align: left;
}
.y2k-sns-band--reverse .y2k-sns-lead {
  margin-left: auto;
}

.y2k-sns-band--simple .y2k-sns-inner {
  max-width: 720px;
  padding: 0 20px;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 18px;
}
.y2k-sns-band--simple .y2k-sns-lead,
.y2k-sns-band--simple .y2k-sns-side-text {
  display: none;
}
.y2k-sns-band--simple .y2k-sns-side {
  display: block;
  flex-basis: auto;
  text-align: center;
}
.y2k-sns-band--simple .y2k-sns-title {
  font-size: 24px;
  margin-bottom: 6px;
}
.y2k-sns-band--simple .y2k-sns-eyebrow {
  margin-bottom: 4px;
  opacity: 0.9;
}
.y2k-sns-band--simple .y2k-sns-btn {
  min-width: 220px;
}

.y2k-sns-band.y2k-sns-band--line {
  background: linear-gradient(135deg, #06c755, #04a94a);
}
.y2k-sns-band.y2k-sns-band--insta {
  background: linear-gradient(135deg, #f58529, #dd2a7b, #8134af, #515bd4);
}

@media (max-width: 959px) {
  .y2k-sns-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
  }
  .y2k-sns-band--reverse .y2k-sns-inner {
    flex-direction: column;
  }
  .y2k-sns-side {
    text-align: left;
    flex-basis: auto;
  }
  .y2k-sns-lead {
    max-width: none;
  }
  .y2k-sns-btn {
    width: 100%;
    justify-content: center;
  }
}
@media (max-width: 599px) {
  .y2k-sns-band {
    padding: 72px 0;
  }
  .y2k-sns-title {
    font-size: 24px;
  }
}

/* -------------------------------------
   12) 共通：Section Title 下線
------------------------------------- */

.y2k-ref-title,
.y2k-basic-title,
.y2k-price-title,
.y2k-intro-band-title,
.top-works-title,
.y2k-duct-plan-title,
.y2k-company-band__title,
.y2k-sns-title {
  position: relative;
  padding-bottom: 10px;
}

.y2k-ref-title::after,
.y2k-basic-title::after,
.y2k-price-title::after,
.y2k-intro-band-title::after,
.top-works-title::after,
.y2k-duct-plan-title::after,
.y2k-company-band__title::after,
.y2k-sns-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.32);
}

.y2k-company-band__title::after,
.y2k-sns-title::after {
  background: rgba(255, 255, 255, 0.8);
}

/* -------------------------------------
   13) SERVICE：右側に矢印
------------------------------------- */

.y2k-ref-service-row-inner::after {
  content: "›";
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 32px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.96);
  text-shadow: 0 3px 12px rgba(0, 0, 0, 0.75);
  pointer-events: none;
  transition: transform 0.18s ease;
}

.y2k-ref-service-row:hover .y2k-ref-service-row-inner::after {
  transform: translate(4px, -50%);
}

@media (max-width: 767px) {
  .y2k-ref-service-row-inner::after {
    right: 18px;
    font-size: 26px;
  }
}

/* -------------------------------------
   14) ANIMATION：スクロールでふわっと v2（統一）
------------------------------------- */

.y2k-price-card,
.y2k-basic-card,
.y2k-intro-band-item,
.flow-step,
.works-card,
.y2k-duct-plan-card {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease-out, transform 0.9s ease-out;
}

.y2k-ref-service-row {
  opacity: 0;
  transform: translateX(-46px);
  transition: opacity 1s ease-out, transform 1s ease-out;
}
.y2k-ref-service-row:nth-child(even) {
  transform: translateX(46px);
}

.y2k-company-band__inner {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.9s ease-out, transform 0.9s ease-out;
}
.y2k-sns-inner {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.9s ease-out, transform 0.9s ease-out;
}

/* 画面内 */
.is-inview {
  opacity: 1;
  transform: none;
}

/* サービスだけ段差 */
@media (min-width: 768px) {
  .y2k-ref-service-row:nth-child(1).is-inview {
    transition-delay: 0.1s;
  }
  .y2k-ref-service-row:nth-child(2).is-inview {
    transition-delay: 0.25s;
  }
  .y2k-ref-service-row:nth-child(3).is-inview {
    transition-delay: 0.4s;
  }
  .y2k-ref-service-row:nth-child(4).is-inview {
    transition-delay: 0.55s;
  }
}

@media (prefers-reduced-motion: reduce) {
  .y2k-ref-service-row,
  .y2k-price-card,
  .y2k-basic-card,
  .y2k-intro-band-item,
  .flow-step,
  .works-card,
  .y2k-duct-plan-card,
  .y2k-company-band__inner,
  .y2k-sns-inner {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* -------------------------------------
   15) スマホ向け：文字サイズ微調整
------------------------------------- */

@media (max-width: 767px) {
  .y2k-ref-lead,
  .y2k-basic-lead,
  .y2k-price-lead,
  .y2k-intro-band-lead,
  .y2k-duct-plan-lead,
  .top-works-lead,
  .flow-step__text {
    font-size: 14px;
  }

  .y2k-basic-title,
  .y2k-price-title,
  .y2k-duct-plan-title,
  .y2k-intro-band-title,
  .top-works-title {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.06em;
  }
}