:root {

      --white: #fdf8fe;
      --line-strong: rgba(23, 27, 32, 0.22);

    }




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

    .container {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto;
    }

    .shell {
      width: min(var(--container), calc(100% - 36px));
      margin: 22px auto 0;
      display: grid;
      grid-template-columns: 230px 1fr;
      gap: 18px;
      align-items: start;
    }

    .side-rail {
      position: sticky;
      top: 22px;
      min-height: calc(100vh - 44px);
      padding: 16px;
      border-radius: 32px;
      /* background: rgba(253, 238, 254, 0.76); */
       background-color: #fff;
      border: 1px solid var(--line);
      backdrop-filter: blur(18px);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      z-index: 10;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 950;
      letter-spacing: -0.04em;
      font-size: 1.25rem;
      margin-bottom: 24px;
    }

    .mark {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      background: var(--black);
      color: white;
      box-shadow: 0 15px 32px rgba(23, 27, 32, 0.18);
    }

    .rail-nav {
      display: grid;
      gap: 5px;
    }

    .rail-nav a {
      position: relative;
      padding: 10px 12px;
      border-radius: 16px;
      color: var(--muted);
      font-size: 0.92rem;
      font-weight: 800;
      transition: 0.2s ease;
    }

    .rail-nav a:hover {
      background: var(--black);
      color: white;
      transform: translateX(-2px);
    }

    .rail-cta {
      display: grid;
      gap: 9px;
      margin-top: 24px;
    }

    .btn {
      min-height: 48px;
      padding: 0 18px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 1px solid transparent;
      font-weight: 900;
      transition: 0.22s ease;
      white-space: nowrap;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn-dark {
      background: var(--black);
      color: white;
      box-shadow: 0 16px 36px rgba(23, 27, 32, 0.18);
    }

    .btn-line {
      background: rgba(255, 253, 248, 0.76);
      color: var(--ink);
      border-color: var(--line);
    }

    .btn-primary {
      background-color: var(--accent);
      /* background: linear-gradient(135deg, var(--accent), var(--accent-soft)); */
      color: white;
      box-shadow: 0 16px 34px rgba(121, 10, 168, 0.25);
    }

    .rail-note {
      margin-top: 16px;
      padding: 14px;
      border-radius: 18px;
      background: var(--purple-soft);
      color: #230569;
      font-size: 0.82rem;
      font-weight: 800;
      line-height: 1.7;
    }

    .content {
      min-width: 0;
    }

    .hero {
      min-height: calc(100vh - 44px);
      display: grid;
      grid-template-rows: auto 1fr;
      gap: 18px;
    }

    .top-strip {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px 18px;
      border-radius: 28px;
      background: rgba(255, 253, 248, 0.72);
      border: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }

    .top-strip p {
      color: var(--muted);
      font-size: 0.94rem;
    }

    .status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      background: var(--purple-soft);
      color: #230569;
      font-size: 0.82rem;
      font-weight: 950;
    }

    .status::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 6px rgba(81, 10, 168, 0.13);
    }

    .hero-stage {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 18px;
      min-height: 650px;
    }

    .headline-panel {
      border-radius: 40px;
      padding: 48px;
      background: var(--black-soft);
      color: white;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .headline-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 18% 18%, rgba(100, 87, 255, 0.30), transparent 24rem),
        radial-gradient(circle at 92% 78%, rgba(10, 168, 120, 0.24), transparent 24rem);
      pointer-events: none;
    }

    .eyebrow {
      position: relative;
      z-index: 1;
      width: fit-content;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 9px 13px;
      border-radius: 999px;
      color: #e3b9ff;
      background: rgba(10, 168, 120, 0.14);
      border: 1px solid rgba(10, 168, 120, 0.30);
      font-weight: 900;
      font-size: 0.88rem;
      margin-bottom: 28px;
    }

    h1 {
      position: relative;
      z-index: 1;
      font-size: clamp(2.55rem, 5vw, 5.9rem);
      line-height: 1.03;
      letter-spacing: -0.09em;
      font-weight: 950;
      margin-bottom: 26px;
    }

    h1 span {
      color: #c200f8;
    }

    .headline-panel p {
      position: relative;
      z-index: 1;
      color: rgba(255, 255, 255, 0.72);
      font-size: 1.08rem;
      max-width: 760px;
      margin-bottom: 30px;
    }

    .hero-actions {
      position: relative;
      z-index: 1;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .hero-actions-flex {
      position: relative;
      z-index: 1;
      display: flex;
      gap: 12px;
      align-items: center;
    }

    .headline-panel .btn-line {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(255, 255, 255, 0.15);
      color: white;
    }

    .hero-caption {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      /* color: rgba(255, 255, 255, 0.62); */
      font-size: 0.92rem;
    }

    .hero-caption span {
      flex-grow: 1;
      flex-shrink: 1;
      border-radius: 100px;
      padding: 20px 40px 20px 40px;
      background: white;
    }

    .system-map {
      border-radius: 40px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      padding: 22px;
      position: relative;
      overflow: hidden;
    }

    .map-title {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 16px;
      padding: 10px 8px 18px;
      border-bottom: 1px solid var(--line);
      margin-bottom: 22px;
    }

    .map-title strong {
      display: block;
      font-size: 1.1rem;
    }

    .map-title span {
      color: var(--muted);
      font-size: 0.86rem;
    }

    .map-code {
      direction: ltr;
      padding: 7px 11px;
      border-radius: 999px;
      background: var(--paper-2);
      font-size: 0.8rem;
      font-weight: 900;
      color: var(--muted);
    }

    .node-map {
      position: relative;
      min-height: 515px;
      display: grid;
      place-items: center;
    }

    .orbit {
      position: absolute;
      inset: 50px;
      border: 1px dashed rgba(23, 27, 32, 0.18);
      border-radius: 50%;
    }

    .orbit.two {
      inset: 108px;
      border-style: solid;
      opacity: 0.45;
    }

    .center-node {
      position: relative;
      z-index: 2;
      width: 168px;
      height: 168px;
      border-radius: 42px;
      display: grid;
      place-items: center;
      text-align: center;
      background: var(--black);
      color: white;
      box-shadow: 0 28px 58px rgba(23, 27, 32, 0.20);
      transform: rotate(6deg);
    }

    .center-node div {
      transform: rotate(-6deg);
    }

    .center-node b {
      display: block;
      font-size: 1.35rem;
      letter-spacing: -0.05em;
    }

    .center-node small {
      color: rgba(255, 255, 255, 0.62);
      font-weight: 700;
    }

    .problem-desc {
      margin: 24px 0 24px 0;
    }

    .node {
      position: absolute;
      z-index: 3;
      width: 150px;
      min-height: 96px;
      padding: 14px;
      border-radius: 24px;
      border: 1px solid var(--line);
      background: rgba(255, 253, 248, 0.88);
      box-shadow: 0 15px 34px rgba(23, 27, 32, 0.09);
      backdrop-filter: blur(10px);
    }

    .node b {
      display: block;
      font-size: 0.95rem;
      margin-bottom: 3px;
    }

    .node span {
      color: var(--muted);
      font-size: 0.78rem;
      line-height: 1.6;
      display: block;
    }

    .node::before {
      content: "";
      width: 11px;
      height: 11px;
      display: block;
      border-radius: 50%;
      background: var(--accent);
      margin-bottom: 10px;
    }

    .node.platform {
      top: 38px;
      right: 28px;
    }

    .node.insurer {
      top: 54px;
      left: 30px;
    }

    .node.claim {
      bottom: 30px;
      right: 24px;
    }

    .node.user {
      bottom: 42px;
      left: 52px;
    }

    .node.bi {
      top: 212px;
      left: 8px;
    }

    .node.api {
      top: 228px;
      right: 4px;
    }

    .node.insurer::before {
      background: var(--accent);
    }

    .node.claim::before {
      background: var(--orange);
    }

    .node.user::before {
      background: var(--cyan);
    }

    .node.bi::before {
      background: var(--red);
    }

    section {
      padding: 82px 0;
    }

    .section-title {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: 28px;
      align-items: end;
      margin-bottom: 34px;
    }

    .kicker {
      color: var(--accent);
      font-weight: 950;
      margin-bottom: 10px;
    }

    h2 {
      font-size: clamp(1.9rem, 3.2vw, 3.45rem);
      line-height: 1.22;
      letter-spacing: -0.065em;
      font-weight: 950;
    }

    .section-title p {
      color: var(--muted);
      font-size: 1.02rem;
    }

    .dialogue {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 18px;
    }

    .bubble {
      position: relative;
      padding: 30px;
      border-radius: 34px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .bubble:nth-child(1) {
      border-bottom-right-radius: 10px;
    }

    .bubble:nth-child(2) {
      border-bottom-left-radius: 10px;
      background: #f9fbff;
    }

    .speaker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
      font-weight: 950;
    }

    .speaker i {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      background: var(--purple-soft);
      color: var(--accent);
      font-style: normal;
    }

    .bubble:nth-child(2) .speaker i {
      background: var(--violet-soft);
      color: var(--accent);
    }

    .bubble p {
      color: var(--muted);
    }

    .friction-stack {
      border-radius: 34px;
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      background: var(--white);
    }

    .friction-row {
      display: grid;
      grid-template-columns: 72px 1fr 210px;
      gap: 18px;
      align-items: center;
      padding: 20px 24px;
      border-bottom: 1px solid var(--line);
    }

    .friction-row:last-child {
      border-bottom: none;
    }

    .friction-row b {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 17px;
      background: var(--accent-soft);
      color: var(--accent);
    }

    .friction-row strong {
      display: block;
      margin-bottom: 3px;
      font-size: 1.04rem;
    }

    .friction-row span {
      color: var(--muted);
      font-size: 0.92rem;
    }

    .meter {
      height: 10px;
      border-radius: 999px;
      background: rgba(23, 27, 32, 0.08);
      overflow: hidden;
    }

    .meter i {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    }

    .flowline {
      position: relative;
      padding: 10px 0;
    }

    .flowline::before {
      content: "";
      position: absolute;
      top: 66px;
      bottom: 66px;
      right: 50%;
      width: 2px;
      background: linear-gradient(to bottom, transparent, var(--line-strong), transparent);
    }

    .flow-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 38px;
      align-items: center;
      margin-bottom: 22px;
    }

    .flow-item:last-child {
      margin-bottom: 0;
    }

    .flow-copy {
      padding: 28px;
      border-radius: 30px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .flow-copy h3 {
      font-size: 1.3rem;
      letter-spacing: -0.04em;
      margin-bottom: 8px;
    }

    .flow-copy p {
      color: var(--muted);
    }

    /* .flow-item:nth-child(even) .flow-copy {
      grid-column: 2;
    }

    .flow-item:nth-child(even) .flow-visual {
      grid-column: 1;
      grid-row: 1;
    } */

    .flow-visual {
      min-height: 170px;
      border-radius: 30px;
      border: 1px solid var(--line);
      background:
        radial-gradient(circle at 25% 30%, rgba(81, 10, 168, 0.18), transparent 12rem),
        var(--paper-2);
      display: grid;
      place-items: center;
      position: relative;
      overflow: hidden;
    }

    .flow-visual::before,
    .flow-visual::after {
      content: "";
      position: absolute;
      border-radius: 999px;
      border: 1px solid rgba(23, 27, 32, 0.12);
    }

    .flow-visual::before {
      width: 210px;
      height: 90px;
      transform: rotate(-12deg);
    }

    .flow-visual::after {
      width: 130px;
      height: 130px;
      transform: rotate(18deg);
    }

    .step-dot {
      position: relative;
      z-index: 2;
      width: 72px;
      height: 72px;
      display: grid;
      place-items: center;
      border-radius: 24px;
      background: var(--black);
      color: white;
      font-size: 1.35rem;
      font-weight: 950;
      box-shadow: 0 18px 42px rgba(23, 27, 32, 0.20);
    }

    .ledger {
      border: 1px solid var(--line);
      border-radius: 34px;
      overflow: hidden;
      background: var(--white);
      box-shadow: var(--shadow-soft);
    }

    .ledger-head,
    .ledger-row {
      display: grid;
      grid-template-columns: 220px 1fr 1fr;
      align-items: stretch;
    }

    .ledger-head {
      background: var(--black);
      color: white;
      font-weight: 950;
    }

    .ledger-head div,
    .ledger-row div {
      padding: 20px 22px;
      border-left: 1px solid var(--line);
    }

    .ledger-head div:last-child,
    .ledger-row div:last-child {
      border-left: none;
    }

    .ledger-row {
      border-bottom: 1px solid var(--line);
    }

    .ledger-row:last-child {
      border-bottom: none;
    }

    .ledger-row .label-cell {
      font-weight: 950;
      background: rgba(233, 170, 242, 0.46);
    }

    .ledger-row p {
      color: var(--muted);
      font-size: 0.94rem;
    }

    .data-equation {
      display: flex;
      /* grid-template-columns: 1fr 68px 1fr 68px 1fr; */
      align-items: center;
      gap: 12px;
    }

    .eq-box {
      min-height: 230px;
      padding: 28px;
      border-radius: 34px;
      border: 1px solid var(--line);
      background: var(--white);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .eq-box:nth-child(1) {
      background: #fbf7ff;
    }

    .eq-box:nth-child(3) {
      background: #fbf7ff;
    }

    .eq-box:nth-child(5) {
      background: #fbf7ff;
    }

    .eq-box strong {
      display: block;
      font-size: 1.24rem;
      letter-spacing: -0.04em;
      margin-bottom: 10px;
    }

    .eq-box p {
      color: var(--muted);
      font-size: 0.95rem;
    }

    .operator {
      display: grid;
      place-items: center;
      padding: 0 20px;
      border-radius: 24px;
      background: var(--black);
      color: white;
      font-size: 2rem;
      font-weight: 950;
      box-shadow: var(--shadow-soft);
      height: fit-content;
    }

    .matrix {
      border: 1px solid var(--line);
      border-radius: 34px;
      background: var(--white);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
    }

    .matrix-row {
      display: grid;
      grid-template-columns: 76px 1fr 1.15fr;
      border-bottom: 1px solid var(--line);
      align-items: stretch;
    }

    .matrix-row:last-child {
      border-bottom: none;
    }

    .matrix-row>div {
      padding: 22px;
      border-left: 1px solid var(--line);
    }

    .matrix-row>div:last-child {
      border-left: none;
    }

    .matrix-num {
      display: grid;
      place-items: center;
      font-weight: 950;
      color: var(--accent);
      background: var(--purple-soft);
    }

    .matrix-title {
      font-weight: 950;
      font-size: 1.05rem;
      background: rgba(233, 220, 235, 0.42);
    }

    .matrix-desc {
      color: var(--muted);
      font-size: 0.95rem;
    }

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

    .definition {
      padding: 36px;
      border-radius: 36px;
      background: var(--black-soft);
      color: white;
      box-shadow: var(--shadow);
      min-height: 420px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .definition p {
      color: rgba(255, 255, 255, 0.72);
      margin-top: 16px;
    }

    .not-is {
      display: grid;
      gap: 14px;
    }

    .not-is-row {
      padding: 24px;
      border-radius: 28px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
    }

    .not-is-row b {
      color: var(--red);
      font-weight: 950;
    }

    .not-is-row.is b {
      color: var(--accent);
    }

    .not-is-row span {
      color: var(--muted);
    }

    .final-cta {
      padding-bottom: 70px;
    }

    .cta-panel {
      padding: 46px;
      border-radius: 42px;
      background:
        radial-gradient(circle at 10% 0%, rgba(81, 10, 168, 0.18), transparent 28rem),
        radial-gradient(circle at 90% 100%, rgba(100, 87, 255, 0.15), transparent 28rem),
        var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
    }

    .cta-panel p {
      color: var(--muted);
      margin-top: 14px;
      max-width: 780px;
    }

    footer {
      padding: 24px 0 34px;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding: 20px 0 0;
      border-top: 1px solid var(--line);
    }

    @media (max-width: 1100px) {
      .shell {
        grid-template-columns: 1fr;
        margin-top: 14px;
      }

      .side-rail {
        position: relative;
        top: auto;
        min-height: auto;
        flex-direction: row;
        align-items: center;
        gap: 16px;
      }

      .rail-nav {
        display: none;
      }

      .rail-cta {
        margin: 0;
        display: flex;
      }

      .rail-note {
        display: none;
      }

      .hero {
        min-height: auto;
      }

      .hero-stage,
      .section-title,
      .positioning,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .headline-panel,
      .system-map {
        min-height: auto;
      }

      .node-map {
        min-height: 560px;
      }

      .dialogue,
      .flow-item {
        grid-template-columns: 1fr;
      }

      .flowline::before {
        display: none;
      }

      .flow-item:nth-child(even) .flow-copy,
      .flow-item:nth-child(even) .flow-visual {
        grid-column: auto;
        grid-row: auto;
      }

      .data-equation {
        grid-template-columns: 1fr;
      }

      .operator {
        min-height: 58px;
      }
    }

    @media (max-width: 760px) {
      .hero-actions-flex {
        flex-wrap: wrap;
      }

      .container,
      .shell {
        width: min(100% - 24px, var(--container));
      }

      .side-rail {
        border-radius: 24px;
      }

      .brand {
        margin-bottom: 0;
      }

      .rail-cta {
        display: none;
      }

      .top-strip {
        grid-template-columns: 1fr;
      }

      .headline-panel,
      .system-map,
      .bubble,
      .flow-copy,
      .flow-visual,
      .definition,
      .cta-panel {
        padding: 24px;
        border-radius: 28px;
      }

      h1 {
        font-size: 2.55rem;
      }

      h2 {
        font-size: 2rem;
      }

      section {
        padding: 54px 0;
      }

      .hero-actions,
      .btn {
        width: 100%;
      }

      .hero-caption,
      .footer-inner {
        flex-direction: column;
        align-items: flex-start;
      }

      .node-map {
        display: grid;
        gap: 10px;
        min-height: auto;
        place-items: stretch;
      }

      .orbit,
      .center-node {
        display: none;
      }

      .node {
        position: static;
        width: 100%;
      }

      .friction-row,
      .ledger-head,
      .ledger-row,
      .matrix-row,
      .not-is-row {
        grid-template-columns: 1fr;
      }

      .friction-row b {
        width: 42px;
        height: 42px;
      }

      .ledger-head div,
      .ledger-row div,
      .matrix-row>div {
        border-left: none;
        border-bottom: 1px solid var(--line);
      }

      .ledger-head div:last-child,
      .ledger-row div:last-child,
      .matrix-row>div:last-child {
        border-bottom: none;
      }
    }