:root {
      --bg: #f5f7fb;
      --panel: #ffffff;
      --text: #0f172a;
      --muted: #6b7280;
      --line: #e6ecf5;
      --blue: #3b82f6;
      --cyan: #4dd8ff;
      --shadow: 0 24px 60px rgba(15,23,42,.08);
      --shadow-soft: 0 14px 34px rgba(15,23,42,.05);
      --radius: 28px;
      --radius-md: 24px;
      --section-space: 92px;
      --title-size: clamp(34px, 3.2vw, 50px);
      --title-line: 1.16;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background: linear-gradient(180deg, #fbfdff 0%, var(--bg) 100%);
    }
    a { color: inherit; text-decoration: none; }
    .wrap { width: min(1240px, calc(100% - 32px)); margin: 0 auto; }
    .panel {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,255,255,.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(230,236,245,.9);
    }
    .header .wrap {
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 24px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 2px;
      font-size: 22px;
      font-weight: 800;
    }
    .logo-mark-image {
      height: 36px;
      width: auto;
      max-width: 36px;
      display: block;
      object-fit: contain;
      flex: 0 0 auto;
      border-radius: 10px;
    }
    .logo-image {
      height: 32px;
      width: auto;
      display: block;
      object-fit: contain;
    }
    .header-actions {
      margin-left: auto;
      display: flex;
      gap: 12px;
    }
    .top-btn {
      height: 50px;
      min-width: 190px;
      padding: 0 22px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #fff;
      background: linear-gradient(135deg, #3576ff 0%, #45c8f6 54%, #78e4ea 100%);
      border: 1px solid rgba(88,157,255,.24);
      box-shadow: 0 16px 32px rgba(53,118,255,.18), inset 0 1px 0 rgba(255,255,255,.28);
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .top-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 18px 36px rgba(53,118,255,.22), inset 0 1px 0 rgba(255,255,255,.28);
    }

    .hero {
      width: 100%;
      padding: 0;
    }
    .hero-card {
      min-height: calc(100vh - 78px);
      border-radius: 0;
      border-left: 0;
      border-right: 0;
      background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
      position: relative;
      overflow: hidden;
      box-shadow: none;
    }
    .hero-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(168deg, transparent 49.8%, rgba(191,203,220,.55) 50%, transparent 50.2%),
        linear-gradient(10deg, transparent 49.8%, rgba(191,203,220,.45) 50%, transparent 50.2%),
        radial-gradient(circle at 80% 18%, rgba(77,216,255,.16), transparent 24%),
        radial-gradient(circle at 16% 88%, rgba(59,130,246,.08), transparent 18%);
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      min-height: calc(100vh - 78px);
      width: min(1440px, calc(100% - 32px));
      margin: 0 auto;
      display: grid;
      grid-template-columns: minmax(320px, .72fr) minmax(560px, 1fr);
      gap: 24px;
      align-items: center;
      padding: 42px 0;
    }
    .hero-copy {
      padding-left: 36px;
      max-width: 600px;
    }
    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 14px;
      border-radius: 999px;
      background: #eef5ff;
      color: var(--blue);
      font-size: 12px;
      font-weight: 800;
      margin-bottom: 20px;
      box-shadow: 0 10px 24px rgba(59,130,246,.08);
    }
    .hero-copy h1 {
      margin: 0;
      font-size: clamp(52px, 5vw, 78px);
      line-height: 1.04;
      letter-spacing: -.055em;
      font-weight: 800;
      max-width: 560px;
    }
    .hero-copy p {
      margin: 18px 0 0;
      font-size: 18px;
      color: #4b5563;
      line-height: 1.72;
      max-width: 520px;
    }
    .hero-desc-2 {
      margin-top: 16px;
      color: #7b8496;
      font-size: 15px;
      line-height: 1.9;
      max-width: 540px;
    }
    .hero-actions {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 36px;
      max-width: 320px;
    }
    .download-btn {
      height: 74px;
      border-radius: 999px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 800;
      color: #fff;
      background: linear-gradient(135deg, #3576ff 0%, #45c8f6 54%, #78e4ea 100%);
      border: 1px solid rgba(88,157,255,.28);
      box-shadow: 0 18px 34px rgba(52,120,255,.20), inset 0 1px 0 rgba(255,255,255,.42);
      text-shadow: 0 1px 1px rgba(56,103,190,.20);
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .download-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 22px 40px rgba(52,120,255,.22), inset 0 1px 0 rgba(255,255,255,.42);
    }
    .download-btn.secondary {
      background: linear-gradient(135deg, #4b8bff 0%, #50cdf1 55%, #8ae7de 100%);
    }
    .download-btn small { display: none; }
    .download-btn-icon {
      width: 19px;
      height: 19px;
      object-fit: contain;
      display: block;
      flex: 0 0 auto;
    }
    .hero-meta {
      margin-top: 24px;
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      color: var(--muted);
      font-size: 13px;
    }
    .hero-meta span {
      padding: 8px 12px;
      border-radius: 999px;
      background: #f6f9fd;
      border: 1px solid var(--line);
    }

    .hero-visual {
      height: 760px;
      position: relative;
      overflow: visible;
      background: transparent;
      transform: translate3d(var(--mx, 0px), var(--my, 0px), 0) scale(var(--ms, 1));
      transform-origin: center center;
      transition: transform .28s ease-out, filter .28s ease-out;
      will-change: transform;
      filter: drop-shadow(0 28px 54px rgba(59,130,246,.10));
    }
    .hero-visual::before {
      content: "";
      position: absolute;
      inset: -4% -8% -6% -2%;
      background: url('./hero-ref-2.jpg?v=7') center/92% no-repeat;
      pointer-events: none;
    }
    .hero-visual::after {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), rgba(255,255,255,.14), transparent 28%);
      opacity: var(--glow, 0);
      transition: opacity .28s ease-out;
      pointer-events: none;
    }

    .section {
      padding: var(--section-space) 0;
    }
    .section-head {
      text-align: center;
      margin-bottom: 36px;
    }
    .section-head h2 {
      margin: 0;
      font-size: var(--title-size);
      line-height: var(--title-line);
      letter-spacing: -.03em;
      font-weight: 800;
    }
    .section-head p {
      margin: 16px auto 0;
      max-width: 760px;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.9;
    }
    .clean-section {
      text-align: center;
    }
    .clean-section .section-head {
      margin-bottom: 28px;
    }
    .clean-wrap {
      width: min(1440px, calc(100% - 32px));
      margin: 0 auto;
    }
    .clean-compare {
      position: relative;
      min-height: 760px;
      border-radius: 0;
      background: #ffffff;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      border-left: 0;
      border-right: 0;
      overflow: hidden;
      box-shadow: none;
      padding: 42px 96px;
    }
    .clean-compare::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 15% 18%, rgba(59,130,246,.05), transparent 20%),
        radial-gradient(circle at 85% 82%, rgba(77,216,255,.06), transparent 24%);
      pointer-events: none;
    }
    .clean-image {
      position: relative;
      z-index: 1;
      width: 100%;
      height: 620px;
      border-radius: 22px;
      background: url('./clean-module-ref.jpg?v=2') center/contain no-repeat;
    }
    .clean-side-label {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      color: #6b7280;
      font-size: 18px;
      line-height: 1.4;
      letter-spacing: .2em;
      writing-mode: vertical-rl;
      text-orientation: mixed;
      z-index: 1;
    }
    .clean-side-label.left { left: 26px; }
    .clean-side-label.right { right: 26px; }

    .wallpaper-section {
      background: #fff;
    }
    .wallpaper-wrap {
      width: min(1440px, calc(100% - 32px));
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 24px;
      align-items: center;
    }
    .wallpaper-visual {
      min-height: 620px;
      background: url('./wallpaper-module-ref.jpg?v=2') left center/contain no-repeat;
    }
    .wallpaper-copy {
      padding-right: 40px;
    }
    .wallpaper-copy h2 {
      margin: 0;
      font-size: var(--title-size);
      line-height: var(--title-line);
      letter-spacing: -.03em;
      font-weight: 800;
    }
    .wallpaper-copy p {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 17px;
      line-height: 1.85;
    }
    .wallpaper-stats {
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .wallpaper-stat {
      padding: 0 18px;
      border-left: 1px solid #e5ebf5;
    }
    .wallpaper-stat:first-child { border-left: 0; padding-left: 0; }
    .wallpaper-stat strong {
      display: block;
      font-size: 54px;
      line-height: 1;
      color: #4c79ff;
      margin-bottom: 8px;
      font-weight: 800;
    }
    .wallpaper-stat span {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
      display: block;
    }
    .wallpaper-note {
      margin-top: 34px;
      color: #7b8496;
      font-size: 16px;
      line-height: 1.8;
    }

    .notice-section {
      background: #fff;
    }
    .notice-wrap {
      width: 100%;
      margin: 0 auto;
      min-height: 760px;
      position: relative;
      background: #fff;
      overflow: hidden;
      padding: 0;
    }
    .notice-overlay {
      position: relative;
      z-index: 1;
      min-height: 760px;
      display: grid;
      grid-template-columns: 1fr 520px 1fr;
      gap: 0;
      align-items: center;
      width: 100%;
      margin: 0 auto;
    }
    .notice-image {
      min-height: 760px;
      background: url('./notice-module-ref.jpg?v=2') left center/contain no-repeat;
    }
    .notice-image.right {
      background-image: url('./notice-module-right.jpg?v=2');
      background-position: right center;
      background-size: contain;
    }
    .notice-copy {
      text-align: left;
      padding: 0 28px;
      display: flex;
      justify-content: center;
    }
    .notice-content {
      max-width: 420px;
    }
    .notice-content h2 {
      margin: 0;
      font-size: var(--title-size);
      line-height: 1.22;
      letter-spacing: -.03em;
      font-weight: 800;
    }
    .notice-content p {
      margin: 16px 0 0;
      color: #7b8496;
      font-size: 17px;
      line-height: 1.85;
    }

    .theme-section {
      background: #fff;
    }
    .theme-wrap {
      width: 100%;
      margin: 0 auto;
      text-align: center;
    }
    .theme-wrap .section-head {
      margin-bottom: 34px;
      width: min(1240px, calc(100% - 32px));
      margin-left: auto;
      margin-right: auto;
    }
    .theme-stage {
      min-height: 720px;
      position: relative;
      overflow: hidden;
      background: #fff;
      width: 100%;
    }
    .theme-stage::before,
    .theme-stage::after {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      width: 120px;
      z-index: 2;
      pointer-events: none;
    }
    .theme-stage::before {
      left: 0;
      background: linear-gradient(90deg, #ffffff 10%, rgba(255,255,255,.85) 45%, rgba(255,255,255,0) 100%);
    }
    .theme-stage::after {
      right: 0;
      background: linear-gradient(270deg, #ffffff 10%, rgba(255,255,255,.85) 45%, rgba(255,255,255,0) 100%);
    }
    .theme-track {
      position: relative;
      z-index: 1;
      width: max-content;
      display: flex;
      align-items: center;
      gap: 24px;
      height: 720px;
      animation: themeScroll 42s linear infinite;
    }
    .theme-image {
      width: 1540px;
      height: 680px;
      flex: 0 0 auto;
      background: url('./theme-module-ref.jpg?v=2') center/cover no-repeat;
    }
    @keyframes themeScroll {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }

    .compare-module {
      text-align: center;
      background: #fff;
    }
    .compare-module .section-head {
      margin-bottom: 26px;
    }
    .compare-module .section-head p {
      margin-top: 0;
      font-size: 20px;
      color: #6b7280;
    }
    .compare-table {
      width: min(1440px, calc(100% - 32px));
      margin: 0 auto;
      border-radius: 32px;
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    }
    .compare-table-header,
    .compare-table-row {
      display: grid;
      grid-template-columns: 1.1fr 1fr 1fr;
      align-items: stretch;
    }
    .compare-table-header {
      background: #f5f9ff;
      border-bottom: 1px solid var(--line);
    }
    .compare-table-row {
      border-bottom: 1px solid #edf2f8;
    }
    .compare-table-row:last-child {
      border-bottom: 0;
    }
    .compare-cell {
      padding: 26px 28px;
      text-align: left;
      min-height: 118px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 8px;
    }
    .compare-cell.feature {
      background: rgba(248,251,255,.68);
    }
    .compare-cell.desktop {
      background: rgba(238,246,255,.62);
    }
    .compare-cell.web {
      background: rgba(255,255,255,.92);
    }
    .compare-col-title {
      font-size: 22px;
      font-weight: 700;
      color: #0f172a;
    }
    .compare-col-sub {
      font-size: 14px;
      color: #64748b;
      line-height: 1.7;
    }
    .compare-feature-title {
      font-size: 20px;
      font-weight: 700;
      color: #111827;
    }
    .compare-feature-desc {
      font-size: 14px;
      color: #6b7280;
      line-height: 1.8;
    }
    .compare-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 16px;
      font-weight: 600;
      color: #111827;
    }
    .compare-badge::before {
      content: "";
      width: 12px;
      height: 12px;
      border-radius: 999px;
      background: #22c55e;
      box-shadow: 0 0 0 6px rgba(34,197,94,.10);
      flex: 0 0 auto;
    }
    .compare-badge.no::before {
      background: #f87171;
      box-shadow: 0 0 0 6px rgba(248,113,113,.10);
    }
    .compare-note {
      font-size: 13px;
      color: #6b7280;
      line-height: 1.8;
      padding-left: 20px;
    }
    .compare-bottom-text {
      margin-top: 24px;
      font-size: 18px;
      color: #374151;
      line-height: 1.8;
    }

    .steps-section,
    .requirements-section,
    .reviews-section {
      background: #fff;
    }
    .steps-wrap,
    .requirements-wrap {
      width: min(1440px, calc(100% - 32px));
      margin: 0 auto;
    }
    .steps-wrap .section-head,
    .requirements-wrap .section-head {
      text-align: left;
      margin-bottom: 26px;
    }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      align-items: stretch;
    }
    .step-card {
      position: relative;
      padding: 30px 28px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }
    .step-card::after {
      content: "→";
      position: absolute;
      top: 44px;
      right: -14px;
      width: 38px;
      height: 38px;
      border-radius: 999px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #fff;
      border: 1px solid #dce8f6;
      color: #3b82f6;
      font-size: 18px;
      box-shadow: 0 8px 18px rgba(59,130,246,.08);
      z-index: 2;
    }
    .step-card:last-child::after {
      display: none;
    }
    .step-head {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 20px;
    }
    .step-icon {
      width: 52px;
      height: 52px;
      border-radius: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #edf5ff;
      color: #2563eb;
      font-size: 22px;
      flex: 0 0 auto;
    }
    .step-no {
      width: 52px;
      height: 52px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #eaf3ff;
      color: #2563eb;
      font-size: 18px;
      font-weight: 800;
      margin: 0;
    }
    .step-card h3 {
      margin: 0 0 12px;
      font-size: 22px;
      color: #0f172a;
    }
    .step-card p {
      margin: 0;
      color: #6b7280;
      line-height: 1.9;
      font-size: 15px;
    }
    .step-tip {
      margin-top: 18px;
      padding-top: 14px;
      border-top: 1px solid #e8eff8;
      color: #3b82f6;
      font-size: 13px;
      font-weight: 600;
    }
    .requirements-panel {
      display: grid;
      grid-template-columns: 1.14fr .86fr;
      gap: 18px;
      align-items: stretch;
    }
    .requirements-card,
    .requirements-note {
      padding: 30px 28px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }
    .requirements-table {
      margin-top: 18px;
      border-radius: 22px;
      overflow: hidden;
      border: 1px solid #e8eff8;
      background: #fff;
    }
    .requirements-row {
      display: grid;
      grid-template-columns: 180px 1fr 1fr;
      border-bottom: 1px solid #e8eff8;
    }
    .requirements-row:last-child {
      border-bottom: 0;
    }
    .requirements-row.header {
      background: #f3f8ff;
      font-weight: 700;
      color: #0f172a;
    }
    .requirements-cell {
      padding: 18px 20px;
      font-size: 14px;
      line-height: 1.8;
      color: #6b7280;
      border-right: 1px solid #e8eff8;
    }
    .requirements-cell:last-child {
      border-right: 0;
    }
    .requirements-cell.label {
      background: #fafcff;
      color: #111827;
      font-weight: 600;
    }
    .requirements-os {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #0f172a;
      font-weight: 700;
    }
    .requirements-os-icon {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #eaf3ff;
      color: #2563eb;
      font-size: 15px;
    }
    .requirements-note h3 {
      margin: 0 0 12px;
      font-size: 22px;
      color: #0f172a;
    }
    .requirements-note p {
      margin: 0;
      color: #6b7280;
      line-height: 1.9;
      font-size: 15px;
    }
    .requirements-tags {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .requirements-tags span {
      padding: 9px 14px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid #d9e5f4;
      color: #355ea8;
      font-size: 13px;
      font-weight: 600;
    }

    .reviews-section {
      background: #fff;
    }
    .reviews-wrap {
      width: min(1440px, calc(100% - 32px));
      margin: 0 auto;
    }
    .reviews-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
    }
    .reviews-wrap .section-head {
      margin-bottom: 0;
      text-align: left;
    }
    .reviews-summary {
      display: flex;
      align-items: center;
      gap: 18px;
      padding: 18px 22px;
      border-radius: 22px;
      background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      flex: 0 0 auto;
    }
    .reviews-score {
      font-size: 40px;
      line-height: 1;
      font-weight: 800;
      color: #0f172a;
    }
    .reviews-summary-meta {
      display: grid;
      gap: 4px;
    }
    .reviews-summary-meta .review-stars {
      margin: 0;
    }
    .reviews-count {
      font-size: 14px;
      color: #64748b;
    }
    .reviews-marquee {
      position: relative;
      overflow: hidden;
    }
    .reviews-track {
      display: flex;
      gap: 18px;
      width: max-content;
      animation: reviewsScroll 28s linear infinite;
    }
    .review-card {
      width: 420px;
      padding: 28px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      flex: 0 0 auto;
    }
    .review-stars {
      color: #f59e0b;
      font-size: 18px;
      letter-spacing: 0.2em;
      margin-bottom: 16px;
    }
    .review-text {
      margin: 0;
      color: #334155;
      font-size: 16px;
      line-height: 1.95;
    }
    .review-meta {
      margin-top: 20px;
    }
    .review-meta strong {
      display: block;
      font-size: 15px;
      color: #0f172a;
    }
    .review-meta span {
      display: block;
      margin-top: 4px;
      font-size: 13px;
      color: #64748b;
    }
    @keyframes reviewsScroll {
      0% { transform: translateX(0); }
      100% { transform: translateX(calc(-50% - 9px)); }
    }

    .faq-section {
      background: #fff;
    }
    .faq-wrap {
      width: min(1320px, calc(100% - 32px));
      margin: 0 auto;
      display: grid;
      grid-template-columns: 360px minmax(0, 1fr);
      gap: 24px;
      align-items: start;
    }
    .faq-intro {
      padding: 28px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #f8fbff 0%, #eef5ff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      position: sticky;
      top: 92px;
    }
    .faq-intro .section-head {
      margin: 0 0 18px;
      text-align: left;
    }
    .faq-intro-note {
      color: #64748b;
      line-height: 1.9;
      font-size: 15px;
    }
    .faq-tags {
      margin-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .faq-tag {
      padding: 9px 14px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid #d9e5f4;
      color: #355ea8;
      font-size: 13px;
      font-weight: 600;
    }
    .faq-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      align-content: start;
    }
    .faq-group {
      display: grid;
      gap: 14px;
      align-content: start;
      padding: 20px;
      border-radius: 28px;
      background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .faq-group-title {
      margin: 0;
      padding: 0 2px 6px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .14em;
      color: #3b82f6;
      text-transform: uppercase;
      border-bottom: 1px solid #e9f0f8;
    }
    .faq-item {
      border-radius: 20px;
      background: #fff;
      border: 1px solid #e7eef7;
      box-shadow: 0 10px 24px rgba(15,23,42,.04);
      overflow: hidden;
      transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    }
    .faq-item[open] {
      border-color: #cfe0f5;
      box-shadow: 0 16px 34px rgba(59,130,246,.08);
    }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 20px 22px;
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      line-height: 1.6;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      line-height: 1;
      color: #3b82f6;
      background: #edf5ff;
      flex: 0 0 auto;
      transition: transform .2s ease, background .2s ease;
    }
    .faq-item[open] summary::after {
      content: "−";
      background: #dbeafe;
    }
    .faq-answer {
      padding: 0 22px 20px;
      color: #6b7280;
      line-height: 1.95;
      font-size: 14px;
    }

    .cta-card {
      padding: 46px;
      text-align: center;
      background: linear-gradient(135deg, #0f1f3a, #2252aa 70%, #3ab5f2);
      color: #fff;
      position: relative;
      overflow: hidden;
      border-radius: var(--radius);
      box-shadow: 0 24px 56px rgba(21,57,132,.18);
    }
    .cta-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 50% 20%, rgba(255,255,255,.14), transparent 28%);
      pointer-events: none;
    }
    .cta-card > * { position: relative; z-index: 1; }
    .cta-card h2 { margin: 0; font-size: clamp(30px, 3vw, 44px); }
    .cta-card p {
      margin: 16px auto 0;
      max-width: 760px;
      color: rgba(255,255,255,.84);
      line-height: 1.9;
      font-size: 16px;
    }
    .cta-actions {
      margin-top: 26px;
      display: flex;
      justify-content: center;
      gap: 14px;
      flex-wrap: wrap;
    }
    .back-top-link {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      color: rgba(255,255,255,.88);
      font-size: 14px;
      line-height: 1;
    }

    @media (max-width: 1080px) {
      .hero-grid,
      .feature-grid,
      .wallpaper-wrap,
      .wallpaper-stats { grid-template-columns: 1fr; }
      .compare-table { width: min(100% - 20px, 1440px); }
      .compare-table-header,
      .compare-table-row { grid-template-columns: 1fr; }
      .compare-cell { min-height: auto; padding: 22px 20px; }
      .compare-cell.feature { border-bottom: 1px solid #edf2f8; }
      .steps-wrap,
      .requirements-wrap,
      .reviews-wrap { width: min(100% - 20px, 1440px); }
      .steps-grid,
      .requirements-panel { grid-template-columns: 1fr; }
      .requirements-row { grid-template-columns: 1fr; }
      .requirements-cell { border-right: 0; border-bottom: 1px solid #e8eff8; }
      .requirements-row .requirements-cell:last-child { border-bottom: 0; }
      .step-card,
      .requirements-card,
      .requirements-note { padding: 24px 22px; border-radius: 24px; }
      .step-card::after { display: none; }
      .reviews-head { flex-direction: column; align-items: flex-start; }
      .review-card { width: 360px; }
      .faq-wrap { width: min(100% - 20px, 1320px); grid-template-columns: 1fr; }
      .faq-intro { position: static; }
      .faq-list { grid-template-columns: 1fr 1fr; }
      .faq-group { padding: 18px; border-radius: 24px; }
      .notice-wrap { min-height: 560px; overflow: hidden; }
      .notice-overlay { min-height: 560px; grid-template-columns: 1fr; width: min(100% - 20px, 1440px); }
      .notice-image { min-height: 280px; background-position: center; }
      .notice-copy { padding: 0; text-align: center; order: 0; }
      .notice-content { max-width: none; }
      .theme-wrap { width: 100%; }
      .theme-stage { min-height: 480px; }
      .theme-stage::before,
      .theme-stage::after { width: 72px; }
      .theme-track { height: 460px; gap: 16px; }
      .theme-image { width: 1120px; height: 440px; background-size: cover; }
      .hero-copy { max-width: none; padding-left: 8px; }
      .hero-visual { height: 520px; }
      .poster-image { transform: scale(1.03); }
      .clean-wrap { width: min(100% - 20px, 1440px); }
      .clean-compare { padding: 28px 40px; min-height: 520px; }
      .clean-image { height: 380px; }
      .wallpaper-wrap { width: min(100% - 20px, 1440px); gap: 18px; }
      .wallpaper-visual { min-height: 420px; background-position: center; }
      .wallpaper-copy { padding-right: 0; }
      .wallpaper-stat { border-left: 0; padding-left: 0; }
    }
    @media (max-width: 760px) {
      .wrap { width: min(100% - 20px, 1240px); }
      .header .wrap { flex-wrap: wrap; padding: 12px 0; }
      .header-actions { width: 100%; margin-left: 0; flex-direction: column; }
      .top-btn { width: 100%; min-width: 0; }
      .hero-grid {
        min-height: auto;
        width: min(100% - 20px, 1440px);
        padding: 26px 0;
      }
      .compare-table { width: min(100% - 20px, 1440px); border-radius: 24px; }
      .compare-col-title { font-size: 20px; }
      .compare-feature-title { font-size: 18px; }
      .compare-bottom-text { font-size: 15px; }
      .steps-wrap,
      .requirements-wrap,
      .reviews-wrap { width: min(100% - 20px, 1440px); }
      .steps-grid,
      .requirements-panel { grid-template-columns: 1fr; }
      .requirements-row { grid-template-columns: 1fr; }
      .step-card,
      .requirements-card,
      .requirements-note { padding: 22px 20px; border-radius: 22px; }
      .step-head { gap: 10px; margin-bottom: 16px; }
      .step-icon,
      .step-no { width: 46px; height: 46px; }
      .step-card h3,
      .requirements-note h3 { font-size: 20px; }
      .requirements-cell { padding: 16px 18px; }
      .reviews-summary { width: 100%; }
      .reviews-score { font-size: 34px; }
      .review-card { width: 300px; padding: 22px; border-radius: 22px; }
      .review-text { font-size: 15px; }
      .faq-wrap { width: min(100% - 20px, 1320px); grid-template-columns: 1fr; }
      .faq-list { grid-template-columns: 1fr; }
      .faq-intro { padding: 22px; border-radius: 22px; }
      .faq-group { padding: 16px; border-radius: 22px; }
      .faq-item { border-radius: 18px; }
      .faq-item summary { padding: 18px; font-size: 16px; }
      .faq-answer { padding: 0 18px 18px; font-size: 14px; }
      .hero-copy { padding-left: 0; }
      .hero-copy h1 { font-size: clamp(34px, 10vw, 52px); }
      .hero-copy p { font-size: 16px; }
      .download-btn { height: 60px; font-size: 17px; }
      .hero-visual { height: 320px; background: transparent; overflow: hidden; }
      .hero-visual::before { inset: 0; background: url('./hero-ref-2.jpg?v=7') center/contain no-repeat; }
      .clean-compare { padding: 18px 20px; min-height: 320px; }
      .clean-image { height: 220px; }
      .clean-side-label { font-size: 14px; letter-spacing: .12em; }
      .clean-side-label.left { left: 6px; }
      .clean-side-label.right { right: 6px; }
      .wallpaper-wrap { width: min(100% - 20px, 1440px); }
      .wallpaper-visual { min-height: 260px; }
      .wallpaper-copy h2 { font-size: 30px; }
      .wallpaper-copy p, .wallpaper-note { font-size: 15px; }
      .wallpaper-stat strong { font-size: 40px; }
      .notice-wrap { min-height: 320px; }
      .notice-overlay { min-height: 320px; grid-template-columns: 1fr; width: min(100% - 20px, 1440px); }
      .notice-image { min-height: 180px; background-position: center; }
      .notice-content h2 { font-size: 28px; }
      .notice-content p { font-size: 14px; }
      .theme-wrap { width: 100%; }
      .theme-stage { min-height: 260px; }
      .theme-stage::before,
      .theme-stage::after { width: 28px; }
      .theme-track { height: 240px; gap: 8px; }
      .theme-image { width: 620px; height: 230px; background-size: cover; }
      .section { padding: 64px 0; }
      .cta-card { padding: 28px 20px; }
    }