:root {
      --ink: #202020;
      --sub: #4c4c4c;
      --muted: #777;
      --line: #dedede;
      --paper: #fff;
      --soft: #f2f3f4;
      --soft-2: #f8f8f8;
      --accent: #de9321;
      --accent-dark: #db8914;
      --cta-red: #b8322c;
      --cta-red-dark: #9e2723;
      --green: #60685f;
      --shadow: none;
      --font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, Meiryo, sans-serif;
      --font-serif: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif;
      --header-height: 150px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.85;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    img { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    h3 { font-size: 24px; }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 20;
      background: rgba(255, 255, 255, .98);
      border-bottom: 1px solid var(--line);
      transition: transform .32s ease;
    }
    .site-header.is-hidden {
      transform: translateY(-100%);
    }
    .header-top {
      width: min(1200px, calc(100% - 40px));
      min-height: 100px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
    }
    .brand-wrap {
      display: grid;
      gap: 7px;
    }
    .brand {
      display: block;
      width: 300px;
    }
    .brand img {
      width: 100%;
      height: auto;
    }
    .brand-subtitle {
      margin: 0;
      color: var(--accent-dark);
      font-size: 13px;
      font-weight: 700;
      line-height: 1;
      letter-spacing: .04em;
    }
    .header-contact {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 22px;
      white-space: nowrap;
    }
    .header-phone-label {
      display: block;
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
      line-height: 1.3;
      text-align: center;
    }
    .header-phone-number {
      display: block;
      color: var(--ink);
      font-family: var(--font-serif);
      font-size: 28px;
      font-weight: 800;
      line-height: 1.15;
    }
    .header-reserve {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 13px 22px;
      border-radius: 4px;
      background: #ff4b4f;
      box-shadow: 0 7px 14px rgba(180, 36, 34, .22);
      color: #fff;
      font-size: 14px;
      font-weight: 800;
      line-height: 1.3;
    }
    .header-reserve:hover {
      background: #e93f43;
    }
    .header-menu {
      border-top: 1px solid var(--line);
      background: rgba(255,255,255,.98);
    }
    .header-menu .menu {
      width: min(960px, calc(100% - 40px));
      min-height: 48px;
      margin: 0 auto;
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 34px;
      list-style: none;
    }
    .header-menu a {
      display: inline-flex;
      align-items: center;
      min-height: 48px;
      color: var(--ink);
      font-size: 14px;
      font-weight: 700;
      line-height: 1.4;
    }
    .header-menu a:hover {
      color: var(--accent-dark);
    }

    .hero {
      position: relative;
      min-height: 600px;
      height: clamp(600px, calc(100svh - var(--header-height)), 860px);
      display: grid;
      align-items: center;
      overflow: hidden;
      background: var(--soft);
    }
    main {
      padding-top: var(--header-height);
    }
    .hero::before {
      content: "";
      position: absolute;
      top: 0;
      right: -75%;
      bottom: 0;
      left: 50%;
      background: url("../images/isj-office-hero.jpg") 56% 25% / cover no-repeat;
    }
    .hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(242,243,244,1) 0%, rgba(242,243,244,1) 50%, rgba(242,243,244,.9) 60%, rgba(242,243,244,.64) 65%, rgba(242,243,244,.32) 70%, rgba(242,243,244,.08) 80%),
        linear-gradient(180deg, rgba(242,243,244,.72) 0%, rgba(242,243,244,.34) 0%, rgba(91,59,39,.10) 100%);
    }
    .hero-inner {
      position: relative;
      z-index: 1;
      width: min(1120px, calc(100% - 40px));
      margin: 0 auto;
      padding: 72px 0;
    }
    .hero-copy { width: min(600px, 100%); }
    .hero-kicker {
      margin: 0 0 22px;
      color: var(--accent-dark);
      font-size: 14px;
      font-weight: 700;
    }
    .hero h1 {
      margin: 0;
      font-family: var(--font-serif);
      font-size: clamp(38px, 3.75vw, 48px);
      font-weight: 700;
      line-height: 1.32;
      letter-spacing: 0;
      overflow-wrap: normal;
    }
    .hero h1 em {
      color: var(--accent-dark);
      font-style: normal;
    }
    .hero-lead {
      width: min(590px, 100%);
      margin: 26px 0 0;
      color: var(--sub);
      font-size: 16px;
      line-height: 2.05;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      margin-top: 34px;
    }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 22px;
      border: 1px solid var(--cta-red);
      background: var(--cta-red);
      color: #fff;
      font-weight: 700;
      line-height: 1.4;
    }
    .button:hover {
      border-color: var(--cta-red-dark);
      background: var(--cta-red-dark);
    }
    .button.secondary {
      background: #fff;
      color: var(--cta-red);
    }

    .section {
      padding: clamp(86px, 6vw, 128px) 0;
      background: var(--paper);
    }
    .section.alt { background: var(--soft-2); }
    .section-inner {
      width: min(960px, calc(100% - 40px));
      margin: 0 auto;
    }
    .section-head {
      display: block;
      margin-bottom: 42px;
      margin-left: auto;
      margin-right: auto;
      max-width: none;
      text-align: center;
    }
    .section h2 {
      margin: 0;
      font-family: var(--font-serif);
      font-size: 32px;
      line-height: 1.55;
      letter-spacing: 0;
      overflow-wrap: anywhere;
    }
    .lead {
      margin: 6px 0 0;
      width: 100%;
      max-width: none;
      color: var(--sub);
      font-size: 16px;
      line-height: 2.05;
      overflow-wrap: anywhere;
    }

    .worry-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .worry-item {
      display: block;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line);
    }
    .worry-problem {
      position: relative;
      min-height: 138px;
      padding: 24px 24px 30px;
      background: #fff;
      border-bottom: 1px solid var(--line);
    }
    .worry-problem::after {
      content: "";
      position: absolute;
      bottom: -12px;
      left: 50%;
      z-index: 1;
      width: 0;
      height: 0;
      transform: translateX(-50%);
      border-left: 11px solid transparent;
      border-right: 11px solid transparent;
      border-top: 12px solid var(--accent);
    }
    .worry-solution {
      padding: 30px 24px 24px;
      background: #fff;
    }
    .worry-q {
      margin: 0;
      font-family: var(--font-sans);
      font-size: 20px;
      font-weight: 700;
      line-height: 1.65;
      overflow-wrap: anywhere;
    }
    .worry-a { margin: 0; color: var(--sub); }
    .worry-a::before {
      content: none;
    }

    .risk {
      background: var(--paper);
      color: var(--ink);
    }
    .risk .section-inner {
      display: block;
      max-width: 960px;
    }