:root {
      --bg: #ffffff;
      --bg-soft: #f7f7f5;
      --surface: #fbfbfa;
      --line: #e9e9e7;
      --line-strong: #d9d9d6;
      --ink: #191919;
      --muted: #6f6f6a;
      --accent: #111111;
      --max: 1120px;
      --radius-xl: 24px;
      --radius-lg: 18px;
      --radius-md: 14px;
      --shadow: 0 1px 2px rgba(15, 15, 15, 0.04), 0 12px 30px rgba(15, 15, 15, 0.04);
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      background: #ffffff;
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
    }

    .shell {
      width: min(calc(100% - 32px), var(--max));
      margin: 0 auto;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 10;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(15, 15, 15, 0.06);
    }

    .topbar-inner {
      width: min(calc(100% - 32px), var(--max));
      margin: 0 auto;
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      width: 30px;
      height: 30px;
      border-radius: 8px;
      background: #111;
      color: #fff;
      display: grid;
      place-items: center;
      font-size: 15px;
      font-weight: 700;
      flex: 0 0 auto;
    }

    .brand-text {
      font-size: 14px;
      font-weight: 600;
      letter-spacing: -0.01em;
    }

    .topnav {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 16px;
      color: var(--muted);
      font-size: 13px;
    }

    .hero {
      position: relative;
      padding: 32px 0 0;
    }

    .hero::after {
      content: "";
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      top: 470px;
      bottom: 0;
      width: 100vw;
      background: #313a48;
      z-index: 0;
    }

    .hero-surface {
      position: relative;
      overflow: hidden;
      padding: 52px 32px 0;
      border-radius: 36px;
      background:
        radial-gradient(circle at 50% 0%, rgba(34, 43, 92, 0.06), transparent 34%),
        linear-gradient(180deg, #fbfbfa 0%, #f8f8f6 100%);
      box-shadow: none;
      z-index: 2;
    }

    .hero-node-layer {
      position: absolute;
      left: 50%;
      top: 188px;
      transform: translateX(-50%);
      width: min(calc(100% - 32px), var(--max));
      height: 660px;
      z-index: 1;
      pointer-events: none;
      overflow: hidden;
      border-radius: 36px;
      mask-image: linear-gradient(
        180deg,
        transparent 0%,
        rgba(0, 0, 0, 0.24) 10%,
        rgba(0, 0, 0, 0.92) 24%,
        #000 100%
      );
      -webkit-mask-image: linear-gradient(
        180deg,
        transparent 0%,
        rgba(0, 0, 0, 0.24) 10%,
        rgba(0, 0, 0, 0.92) 24%,
        #000 100%
      );
    }

    .hero-node-embed {
      width: 100%;
      height: 100%;
      border: 0;
      display: block;
      opacity: 0.88;
    }

    .hero-node-bg,
    .cta-node {
      position: absolute;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 8px 24px rgba(9, 16, 61, 0.12);
    }

    .hero-node-bg-a {
      width: 18px;
      height: 18px;
      left: 88px;
      top: 124px;
    }

    .hero-node-bg-b {
      width: 28px;
      height: 28px;
      right: 112px;
      top: 148px;
    }

    .hero-node-bg-c {
      width: 12px;
      height: 12px;
      left: 28%;
      top: 248px;
    }

    .hero-node-link,
    .cta-link {
      position: absolute;
      height: 1px;
      background: rgba(255, 255, 255, 0.12);
      transform-origin: left center;
    }

    .hero-node-link-a {
      left: 102px;
      top: 138px;
      width: 180px;
      transform: rotate(28deg);
    }

    .hero-node-link-b {
      right: 136px;
      top: 174px;
      width: 144px;
      transform: rotate(108deg);
    }

    .hero-node-link-c {
      left: calc(28% + 8px);
      top: 252px;
      width: 220px;
      transform: rotate(-14deg);
    }

    .hero-orbit,
    .hero-node-bg,
    .hero-node-link,
    .stage-node-hint {
      display: none;
    }

    

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 32px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: var(--surface);
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
    }

    .eyebrow-inverse {
      border-color: rgba(17, 17, 17, 0.08);
      background: rgba(255, 255, 255, 0.92);
      color: rgba(17, 17, 17, 0.56);
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #8b8b86;
    }

    .eyebrow-inverse::before {
      background: rgba(79, 107, 255, 0.72);
    }

    .hero-copy {
      max-width: 860px;
    }

    .hero-copy-centered {
      position: relative;
      z-index: 2;
      margin: 0 auto;
      text-align: center;
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(40px, 7vw, 72px);
      line-height: 0.98;
      letter-spacing: -0.055em;
      font-weight: 700;
    }

    .hero-copy-centered h1 {
      color: var(--ink);
    }

    .lead {
      max-width: 720px;
      margin: 0;
      color: var(--muted);
      font-size: 18px;
      letter-spacing: -0.01em;
    }

    .lead-inverse {
      margin-left: auto;
      margin-right: auto;
      color: rgba(25, 25, 25, 0.72);
    }

    .cta-row,
    .micro-stats,
    .feature-grid,
    .usecase-grid,
    .detail-grid,
    .proof-grid,
    .faq-grid,
    .footer-grid {
      display: grid;
      gap: 16px;
    }

    .cta-row {
      grid-template-columns: repeat(2, minmax(0, max-content));
      margin-top: 28px;
      align-items: center;
    }

    .cta-row-centered {
      justify-content: center;
    }

    .button {
      min-height: 44px;
      padding: 0 16px;
      border-radius: 10px;
      border: 1px solid var(--line-strong);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #fff;
      color: var(--ink);
      font-size: 14px;
      font-weight: 600;
      box-shadow: none;
    }

    .button.primary {
      background: #111;
      color: #fff;
      border-color: #111;
    }

    .button-hero {
      background: #4f6bff;
      border-color: #4f6bff;
      color: #fff;
    }

    .button-hero-secondary {
      background: rgba(255, 255, 255, 0.9);
      border-color: rgba(17, 17, 17, 0.08);
      color: var(--ink);
    }

    .hero-mini-proof {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 220px));
      gap: 12px;
      justify-content: center;
      margin-top: 22px;
    }

    .hero-mini-proof-quiet .mini-proof-card {
      background: rgba(255, 255, 255, 0.06);
    }

    .mini-proof-card {
      padding: 12px 14px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.08);
      text-align: left;
      backdrop-filter: blur(10px);
    }

    .mini-proof-card strong {
      display: block;
      color: #fff;
      font-size: 13px;
      letter-spacing: -0.02em;
    }

    .mini-proof-card span {
      display: block;
      margin-top: 4px;
      color: rgba(255, 255, 255, 0.72);
      font-size: 12px;
      line-height: 1.45;
    }

    .hero-stage {
      margin-top: 42px;
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      overflow: hidden;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .hero-stage-video {
      width: min(960px, 100%);
      margin: 42px auto 0;
      position: relative;
      z-index: 3;
      box-shadow: 0 18px 44px rgba(0, 0, 0, 0.12);
    }

    .stage-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 14px 18px;
      border-bottom: 1px solid var(--line);
      background: var(--surface);
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
    }

    .dots {
      display: flex;
      gap: 6px;
    }

    .dots span {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #d1d1ce;
    }

    .stage-body {
      display: grid;
      grid-template-columns: 280px 1fr;
      min-height: 470px;
    }

    .video-frame {
      position: relative;
      overflow: hidden;
      background: #f7f6f3;
      aspect-ratio: 16 / 9;
      border-radius: 18px;
      border: 1px solid rgba(17, 17, 17, 0.08);
    }

    .hero-video {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: cover;
      background: #eceae5;
    }

    .video-caption {
      position: absolute;
      left: 18px;
      bottom: 18px;
      display: inline-flex;
      flex-direction: column;
      gap: 8px;
      max-width: min(480px, calc(100% - 36px));
      padding: 14px 16px;
      border: 1px solid rgba(15, 15, 15, 0.08);
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.84);
      backdrop-filter: blur(10px);
    }

    .video-caption-text {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.45;
    }

    .stage-sidebar {
      border-right: 1px solid var(--line);
      background: #fcfcfb;
      padding: 18px;
    }

    .stage-main {
      padding: 22px;
      background: #fff;
    }

    .stage-main-b2 {
      padding: 18px;
      background: linear-gradient(180deg, #f9f9f8 0%, #f2f2f0 100%);
    }

    .stage-main-b2-full {
      padding: 18px;
    }

    .nav-chip,
    .tag,
    .small-note {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
    }

    .sidebar-group {
      display: grid;
      gap: 10px;
      margin-bottom: 20px;
    }

    .video-frame-b2::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(135deg, rgba(79, 107, 255, 0.08), transparent 32%),
        linear-gradient(180deg, transparent 52%, rgba(17, 17, 17, 0.08) 100%);
      pointer-events: none;
    }

    .stage-node-hint {
      position: absolute;
      right: 28px;
      top: 24px;
      width: 96px;
      height: 56px;
      pointer-events: none;
    }

    .stage-node-hint-dot {
      position: absolute;
      width: 14px;
      height: 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.9);
      box-shadow: 0 8px 18px rgba(17, 17, 17, 0.12);
    }

    .stage-node-hint-dot:nth-child(1) {
      left: 0;
      top: 18px;
    }

    .stage-node-hint-dot:nth-child(2) {
      left: 34px;
      top: 0;
    }

    .stage-node-hint-dot:nth-child(3) {
      right: 0;
      bottom: 6px;
    }

    .stage-node-hint::before,
    .stage-node-hint::after {
      content: "";
      position: absolute;
      height: 1px;
      background: rgba(255, 255, 255, 0.38);
      transform-origin: left center;
    }

    .stage-node-hint::before {
      left: 12px;
      top: 26px;
      width: 34px;
      transform: rotate(-28deg);
    }

    .stage-node-hint::after {
      left: 46px;
      top: 10px;
      width: 42px;
      transform: rotate(30deg);
    }

    .cta-preview-box {
      position: relative;
      display: grid;
      gap: 14px;
      background:
        radial-gradient(circle at 24% 26%, rgba(79, 107, 255, 0.08), transparent 20%),
        linear-gradient(180deg, #fbfbfa 0%, #f3f3f1 100%);
    }

    .cta-preview-sheet {
      border: 1px solid var(--line);
      border-radius: 16px;
      background: #fff;
      padding: 16px;
    }

    .cta-preview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 12px;
    }

    .cta-preview-card {
      border: 1px solid var(--line);
      border-radius: 12px;
      background: #fafaf8;
      padding: 12px;
    }

    .cta-preview-card-accent {
      background: linear-gradient(180deg, rgba(79, 107, 255, 0.1) 0%, rgba(79, 107, 255, 0.04) 100%);
    }

    .cta-preview-note {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .line,
    .card-line,
    .soft-box,
    .doc-card {
      border: 1px solid var(--line);
      background: #fff;
    }

    .line {
      height: 12px;
      border-radius: 999px;
    }

    .card-line {
      height: 14px;
      border-radius: 999px;
      margin-bottom: 10px;
    }

    .soft-box {
      border-radius: var(--radius-md);
      background: var(--surface);
      padding: 14px;
    }

    .doc-card {
      border-radius: var(--radius-lg);
      padding: 18px;
    }

    .doc-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 14px;
    }

    .doc-stack {
      display: grid;
      gap: 14px;
    }

    .micro-stats {
      position: relative;
      z-index: 2;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 20px;
      padding: 44px 0 54px;
      color: #fff;
    }

    .micro-stat {
      padding: 18px 0 0;
      border-top: 1px solid rgba(255, 255, 255, 0.16);
    }

    .micro-stat strong {
      display: block;
      margin-bottom: 8px;
      font-size: clamp(26px, 4vw, 40px);
      line-height: 0.95;
      letter-spacing: -0.06em;
      font-weight: 700;
      color: #fff;
    }

    .micro-stat div {
      max-width: 180px;
      color: rgba(255, 255, 255, 0.72);
      font-size: 13px;
      line-height: 1.45;
    }

    .section {
      padding: 72px 0 10px;
      background: #fff;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      gap: 24px;
      align-items: end;
      margin-bottom: 24px;
    }

    .section-label {
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    h2 {
      margin: 0;
      font-size: clamp(28px, 4vw, 48px);
      line-height: 1;
      letter-spacing: -0.045em;
      font-weight: 700;
    }

    .core-title {
      display: block;
      max-width: 13.4em;
      line-height: 1.04;
    }

    .core-title-main,
    .core-title-focus {
      display: inline;
    }

    .core-title-focus {
      margin-left: 0.08em;
      font-weight: 800;
    }

    .section-desc {
      max-width: 700px;
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .feature-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .feature-card,
    .usecase-card,
    .proof-card,
    .faq-card,
    .cta-panel {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: #fff;
      padding: 22px;
    }

    .feature-card {
      min-height: 280px;
    }

    .feature-visual {
      min-height: 166px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--surface);
      padding: 12px;
      margin-bottom: 16px;
      overflow: hidden;
    }

    .feature-shot-wrap {
      margin-top: 12px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: #fff;
      overflow: hidden;
    }

    .feature-shot-wrap-wide {
      background: #f8f7f4;
    }

    .feature-shot {
      display: block;
      width: 100%;
      height: auto;
    }

    .export-preview {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 12px;
      align-items: stretch;
      margin-top: 12px;
    }

    .export-file {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: #fff;
      padding: 12px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
    }

    .export-file img {
      width: 28px;
      height: 28px;
    }

    .export-lines {
      border: 1px solid var(--line);
      border-radius: 12px;
      background: #fff;
      padding: 12px;
    }

    .export-sheet {
      min-height: 58px;
      margin-top: 4px;
    }

    .feature-card h3,
    .usecase-card h3,
    .proof-card h3,
    .faq-card h3 {
      margin: 0 0 10px;
      font-size: 20px;
      letter-spacing: -0.02em;
    }

    .feature-card p,
    .usecase-card p,
    .proof-card p,
    .faq-card p,
    .cta-panel p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

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

    .usecase-card {
      min-height: 240px;
      display: grid;
      gap: 14px;
      grid-template-columns: 1fr 220px;
      align-items: stretch;
    }

    .usecase-visual,
    .proof-visual {
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--surface);
      padding: 14px;
    }

    .detail-grid {
      grid-template-columns: 1.05fr 0.95fr;
      gap: 18px;
    }

    .detail-panel {
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      background: #fff;
      overflow: hidden;
    }

    .detail-panel .inner {
      padding: 22px;
    }

    .detail-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .detail-item {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 14px;
      background: var(--surface);
    }

    .detail-item strong {
      display: block;
      margin-bottom: 6px;
      font-size: 14px;
    }

    .proof-grid {
      grid-template-columns: 1fr 1fr 1fr;
    }

    .proof-card {
      min-height: 230px;
    }

    .quote {
      margin: 0 0 14px;
      font-size: 22px;
      line-height: 1.35;
      letter-spacing: -0.03em;
    }

    .faq-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .cta-section {
      padding: 72px 0 80px;
    }

    .cta-shell {
      border: 1px solid var(--line);
      border-radius: 28px;
      background: var(--surface);
      padding: 24px;
    }

    .cta-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 18px;
      align-items: stretch;
    }

    .cta-panel h2 {
      margin-bottom: 12px;
    }

    .footer {
      padding: 0 0 44px;
      color: var(--muted);
    }

    .footer-grid {
      grid-template-columns: 1.1fr 1fr 1fr 1fr;
      padding-top: 24px;
      border-top: 1px solid var(--line);
      font-size: 13px;
    }

    .footer-title {
      margin-bottom: 10px;
      color: var(--ink);
      font-weight: 600;
    }

    .footer ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 8px;
    }

    @media (max-width: 980px) {
      .stage-body,
      .doc-grid,
      .detail-grid,
      .cta-layout,
      .usecase-grid,
      .feature-grid,
      .proof-grid,
      .faq-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-surface {
        padding: 40px 20px 0;
      }

      .hero-node-layer {
        top: 236px;
        height: 560px;
        width: min(calc(100% - 32px), var(--max));
      }

      .hero-mini-proof {
        grid-template-columns: 1fr;
      }

      .hero-orbit-left,
      .hero-orbit-right {
        opacity: 0.45;
      }

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

      .usecase-card {
        grid-template-columns: 1fr;
      }

      .section-head,
      .topbar-inner {
        flex-direction: column;
        align-items: flex-start;
      }

      .topnav {
        justify-content: flex-start;
      }
    }

    @media (max-width: 640px) {
      .shell,
      .topbar-inner {
        width: min(calc(100% - 20px), var(--max));
      }

      .hero {
        padding-top: 34px;
      }

      .hero-surface {
        padding: 32px 14px 0;
        border-radius: 24px;
      }

      .hero-node-layer {
        top: 290px;
        height: 420px;
        width: min(calc(100% - 20px), var(--max));
        border-radius: 24px;
      }

      .cta-row {
        grid-template-columns: 1fr;
      }

      .core-title {
        max-width: none;
      }

      .micro-stats {
        grid-template-columns: 1fr;
      }

      .video-caption {
        left: 12px;
        right: 12px;
        bottom: 12px;
        max-width: none;
      }

    }