:root {
      --ink: #14161a;
      --muted: #5f6673;
      --soft: #f4f1ea;
      --paper: #fffaf1;
      --line: rgba(20, 22, 26, .12);
      --amber: #ffb84d;
      --coral: #ff6b57;
      --teal: #15a7a0;
      --blue: #3158d4;
      --plum: #7d3f98;
      --radius: 8px;
      --shadow: 0 18px 50px rgba(20, 22, 26, .14);
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
      line-height: 1.75;
      letter-spacing: 0;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img,
    svg {
      display: block;
      max-width: 100%;
    }

    .page {
      overflow: hidden;
    }

    .nav {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid rgba(255, 255, 255, .28);
      background: rgba(20, 22, 26, .84);
      color: #fff;
      backdrop-filter: blur(18px);
    }

    .nav-inner {
      width: min(1160px, calc(100% - 32px));
      min-height: 68px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background:
        linear-gradient(135deg, #ffcf70 0%, #ff6b57 52%, #3158d4 100%);
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .38);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 18px;
      font-size: 14px;
      color: rgba(255, 255, 255, .78);
    }

    .nav-links a:hover {
      color: #fff;
    }

    .nav-links a.is-active {
      color: #fff;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 18px;
      border: 1px solid rgba(20, 22, 26, .12);
      border-radius: var(--radius);
      background: var(--ink);
      color: #fff;
      font-weight: 800;
      line-height: 1.15;
      text-align: center;
      box-shadow: 0 10px 22px rgba(20, 22, 26, .14);
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    }

    .button:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(20, 22, 26, .2);
    }

    .button.accent {
      background: linear-gradient(135deg, var(--coral), var(--blue));
      border-color: transparent;
    }

    .hero {
      position: relative;
      color: #fff;
      background:
        linear-gradient(115deg, rgba(20, 22, 26, .98) 0%, rgba(20, 22, 26, .94) 46%, rgba(20, 22, 26, .76) 100%),
        linear-gradient(145deg, rgba(255, 107, 87, .22) 0%, rgba(21, 167, 160, .22) 46%, rgba(49, 88, 212, .34) 100%),
        #14161a;
      background-size: cover;
      background-position: center;
    }

    .hero-inner {
      width: min(1160px, calc(100% - 32px));
      min-height: 720px;
      margin: 0 auto;
      padding: 92px 0 84px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 390px;
      align-items: center;
      gap: 56px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 18px;
      color: #ffe0a4;
      font-weight: 800;
      text-transform: uppercase;
      font-size: 13px;
      letter-spacing: .08em;
    }

    .hero h1 {
      max-width: 760px;
      margin: 0;
      font-size: clamp(38px, 5vw, 68px);
      line-height: 1.02;
      letter-spacing: 0;
    }

    .hero-copy {
      max-width: 700px;
      margin: 24px 0 0;
      color: rgba(255, 255, 255, .84);
      font-size: 19px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 32px;
    }

    .hero .button.secondary {
      background: rgba(255, 255, 255, .12);
      border-color: rgba(255, 255, 255, .32);
      box-shadow: none;
    }

    .stats {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 1px;
      margin-top: 46px;
      max-width: 720px;
      background: rgba(255, 255, 255, .2);
      border: 1px solid rgba(255, 255, 255, .2);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .stat {
      padding: 18px;
      background: rgba(20, 22, 26, .42);
    }

    .stat strong {
      display: block;
      font-size: 25px;
      line-height: 1;
    }

    .stat span {
      display: block;
      margin-top: 7px;
      color: rgba(255, 255, 255, .72);
      font-size: 13px;
      line-height: 1.35;
    }

    .side-panel {
      align-self: end;
      border: 1px solid rgba(255, 255, 255, .22);
      border-radius: var(--radius);
      background: rgba(255, 250, 241, .92);
      color: var(--ink);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .hero-media {
      margin: 0;
      background: #14161a;
    }

    .hero-media img {
      width: 100%;
      aspect-ratio: 1080 / 703;
      height: clamp(210px, 21vw, 290px);
      object-fit: cover;
      display: block;
    }

    .panel-top {
      padding: 20px;
      background: #14161a;
      color: #fff;
    }

    .panel-top strong {
      display: block;
      font-size: 18px;
    }

    .panel-top span {
      display: block;
      margin-top: 4px;
      color: rgba(255, 255, 255, .68);
      font-size: 13px;
    }

    .panel-body {
      padding: 20px;
      display: grid;
      gap: 14px;
    }

    .meter {
      display: grid;
      gap: 8px;
      font-size: 13px;
      font-weight: 700;
    }

    .meter span {
      display: flex;
      justify-content: space-between;
      gap: 12px;
    }

    .bar {
      height: 9px;
      border-radius: 999px;
      background: rgba(20, 22, 26, .1);
      overflow: hidden;
    }

    .bar i {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--teal), var(--amber), var(--coral));
    }

    .bar-fill-custom {
      width: 94%;
    }

    .bar-fill-speed {
      width: 88%;
    }

    .bar-fill-trial {
      width: 72%;
    }

    main {
      background:
        linear-gradient(180deg, var(--paper) 0%, #ffffff 34%, var(--soft) 100%);
    }

    .section {
      width: min(1080px, calc(100% - 32px));
      margin: 0 auto;
      padding: 78px 0;
    }

    .section.tight {
      padding-top: 36px;
    }

    .intro {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 50px;
      align-items: start;
    }

    .content {
      min-width: 0;
    }

    .content > *:first-child {
      margin-top: 0;
    }

    h2 {
      margin: 0 0 20px;
      font-size: clamp(29px, 4vw, 48px);
      line-height: 1.12;
      letter-spacing: 0;
    }

    h3 {
      margin: 42px 0 14px;
      font-size: clamp(22px, 3vw, 30px);
      line-height: 1.25;
      letter-spacing: 0;
    }

    p {
      margin: 0 0 18px;
      color: #313640;
      font-size: 17px;
    }

    .lead {
      color: #2c3038;
      font-size: 20px;
      line-height: 1.7;
    }

    .callout {
      margin: 28px 0;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: 0 12px 28px rgba(20, 22, 26, .06);
    }

    .toc {
      position: sticky;
      top: 92px;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .86);
      box-shadow: 0 12px 28px rgba(20, 22, 26, .06);
    }

    .toc strong {
      display: block;
      margin-bottom: 12px;
      font-size: 14px;
      text-transform: uppercase;
      letter-spacing: .08em;
    }

    .toc a {
      display: block;
      padding: 10px 0;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 14px;
    }

    .media-block {
      margin: 34px 0;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .media-block img,
    .gallery-card img {
      width: 100%;
      display: block;
      object-fit: cover;
      background: #14161a;
    }

    .media-block-wide img,
    .media-block-split img {
      aspect-ratio: 1080 / 703;
    }

    .media-block figcaption,
    .gallery-card figcaption {
      margin: 0;
      padding: 14px 18px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 14px;
      background: #fff;
    }

    .image-gallery {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
      margin: 30px 0;
    }

    .gallery-card {
      margin: 0;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: 0 12px 28px rgba(20, 22, 26, .08);
      overflow: hidden;
    }

    .gallery-card img {
      aspect-ratio: 1 / 1;
      height: clamp(150px, 18vw, 230px);
      object-position: center top;
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 28px;
    }

    .price-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: 0 10px 28px rgba(20, 22, 26, .07);
    }

    .price-card.featured {
      background: #14161a;
      color: #fff;
      transform: translateY(-10px);
    }

    .price-card h3 {
      margin: 0 0 12px;
      font-size: 22px;
    }

    .price {
      display: block;
      margin-bottom: 14px;
      font-size: 26px;
      font-weight: 900;
      line-height: 1.1;
    }

    .price-card p,
    .price-card li {
      color: inherit;
      opacity: .78;
      font-size: 15px;
    }

    ul,
    ol {
      margin: 16px 0 24px;
      padding-left: 22px;
      color: #313640;
      font-size: 17px;
    }

    li {
      margin: 8px 0;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
      margin-top: 28px;
    }

    .feature {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
    }

    .feature strong {
      display: block;
      margin-bottom: 8px;
      font-size: 18px;
    }

    .feature p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .compare {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 28px;
    }

    .compare-box {
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: #fff;
    }

    .compare-box h3 {
      margin-top: 0;
    }

    .steps {
      counter-reset: step;
      list-style: none;
      padding: 0;
    }

    .steps li {
      counter-increment: step;
      position: relative;
      min-height: 54px;
      padding-left: 68px;
      margin: 20px 0;
    }

    .steps li::before {
      content: counter(step);
      position: absolute;
      left: 0;
      top: 0;
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 8px;
      background: var(--ink);
      color: #fff;
      font-weight: 900;
    }

    .faq {
      display: grid;
      gap: 12px;
    }

    details {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      overflow: hidden;
    }

    summary {
      cursor: pointer;
      padding: 18px 20px;
      font-weight: 800;
    }

    details p {
      padding: 0 20px 20px;
    }

    .cta-band {
      color: #fff;
      background:
        linear-gradient(135deg, rgba(20, 22, 26, .9), rgba(20, 22, 26, .66)),
        linear-gradient(135deg, var(--teal), var(--amber) 46%, var(--coral));
    }

    .cta-inner {
      width: min(1080px, calc(100% - 32px));
      margin: 0 auto;
      padding: 68px 0;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: center;
    }

    .cta-inner h2 {
      margin-bottom: 10px;
    }

    .cta-inner p {
      margin: 0;
      color: rgba(255, 255, 255, .78);
    }

    footer {
      padding: 34px 16px;
      background: #14161a;
      color: rgba(255, 255, 255, .62);
      text-align: center;
      font-size: 13px;
    }

    .floating-cta {
      position: fixed;
      right: max(18px, env(safe-area-inset-right));
      bottom: max(18px, env(safe-area-inset-bottom));
      z-index: 50;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 50px;
      padding: 0 22px;
      border-radius: var(--radius);
      border: 1px solid rgba(255, 255, 255, .28);
      background: linear-gradient(135deg, var(--coral), var(--blue));
      color: #fff;
      font-size: 15px;
      font-weight: 900;
      line-height: 1.15;
      text-align: center;
      box-shadow: 0 18px 44px rgba(20, 22, 26, .28);
      transition: transform .18s ease, box-shadow .18s ease;
    }

    .floating-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 54px rgba(20, 22, 26, .34);
    }

    @media (max-width: 940px) {
      .nav-links {
        display: none;
      }

      .hero-inner,
      .intro,
      .cta-inner {
        grid-template-columns: 1fr;
      }

      .side-panel {
        align-self: auto;
      }

      .hero-media img {
        height: 260px;
        object-position: center 42%;
      }

      .toc {
        position: static;
      }

      .cards,
      .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .price-card.featured {
        transform: none;
      }

      .gallery-card img {
        height: 170px;
      }
    }

    @media (max-width: 680px) {
      .hero-inner {
        min-height: auto;
        padding: 70px 0 56px;
      }

      .hero h1 {
        font-size: 32px;
      }

      .hero-copy,
      .lead {
        font-size: 17px;
      }

      .stats,
      .cards,
      .feature-grid,
      .compare {
        grid-template-columns: 1fr;
      }

      .image-gallery {
        gap: 8px;
      }

      .gallery-card figcaption {
        padding: 9px 8px;
        font-size: 11px;
        line-height: 1.35;
      }

      .gallery-card img {
        height: 118px;
      }

      .section {
        padding: 56px 0;
      }

      .button {
        width: 100%;
      }

      .hero-media img {
        height: 190px;
        object-position: center 38%;
      }

      .cta-inner {
        text-align: left;
      }

      .floating-cta {
        left: 16px;
        right: 16px;
        bottom: max(14px, env(safe-area-inset-bottom));
        width: auto;
        min-height: 52px;
      }
    }