:root {
      --bg: #fbf7ef;
      --paper: #ffffff;
      --paper-soft: #fffaf2;
      --text: #25221f;
      --muted: #6f665c;
      --line: #eadfce;
      --brand: #b66a2c;
      --brand-dark: #88491b;
      --green: #31735f;
      --blue: #415f86;
      --shadow: 0 18px 45px rgba(94, 61, 29, 0.12);
      --radius: 24px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 10% 4%, rgba(255, 219, 166, 0.55), transparent 32rem),
        radial-gradient(circle at 92% 18%, rgba(185, 217, 204, 0.45), transparent 28rem),
        linear-gradient(180deg, #fffaf1 0%, var(--bg) 42%, #f8f1e6 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 250, 242, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(234, 223, 206, 0.8);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: #2e2923;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: inline-grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--brand), #df9b57);
      box-shadow: 0 10px 20px rgba(182, 106, 44, 0.24);
      font-size: 16px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      color: #4f463d;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover {
      background: #fff0da;
      color: var(--brand-dark);
    }

    .nav-action {
      padding: 10px 16px;
      border: 1px solid #dcbf95;
      border-radius: 999px;
      color: var(--brand-dark);
      background: #fff8ec;
      font-weight: 700;
      font-size: 14px;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-action:hover {
      transform: translateY(-1px);
      box-shadow: 0 10px 24px rgba(136, 73, 27, 0.16);
    }

    .menu-button {
      display: none;
      border: 1px solid var(--line);
      background: var(--paper);
      color: var(--text);
      border-radius: 12px;
      padding: 8px 11px;
      font-size: 18px;
      cursor: pointer;
    }

    main {
      position: relative;
    }

    .hero {
      padding: 58px 0 42px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.16fr) minmax(300px, 0.84fr);
      gap: 28px;
      align-items: stretch;
    }

    .hero-copy {
      padding: 34px;
      border: 1px solid rgba(234, 223, 206, 0.9);
      border-radius: calc(var(--radius) + 8px);
      background: rgba(255, 255, 255, 0.64);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      right: -72px;
      top: -82px;
      width: 190px;
      height: 190px;
      border-radius: 50%;
      background: rgba(235, 173, 92, 0.18);
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 12px;
      border-radius: 999px;
      background: #fff0db;
      color: var(--brand-dark);
      font-size: 13px;
      font-weight: 700;
      border: 1px solid #efd3aa;
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(32px, 6vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.055em;
      color: #211d19;
    }

    .lead {
      margin: 0;
      max-width: 720px;
      color: #51483f;
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: 14px;
      font-weight: 800;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    }

    .button.primary {
      background: var(--text);
      color: #fff;
      box-shadow: 0 12px 26px rgba(37, 34, 31, 0.18);
    }

    .button.secondary {
      background: #fff7ea;
      color: var(--brand-dark);
      border: 1px solid #e8c99b;
    }

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

    .hero-panel {
      padding: 26px;
      border-radius: calc(var(--radius) + 8px);
      background: linear-gradient(155deg, #ffffff 0%, #fff7ea 100%);
      border: 1px solid rgba(234, 223, 206, 0.96);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 20px;
    }

    .device-card {
      border-radius: 28px;
      padding: 22px;
      background:
        linear-gradient(135deg, rgba(49, 115, 95, 0.09), rgba(182, 106, 44, 0.1)),
        #fffdf9;
      border: 1px solid #eee0cf;
    }

    .phone-shape {
      width: 150px;
      height: 220px;
      margin: 0 auto 20px;
      border-radius: 28px;
      background: #2b2a29;
      padding: 12px;
      box-shadow: inset 0 0 0 2px #46413c, 0 18px 28px rgba(37, 34, 31, 0.18);
      animation: floaty 5s ease-in-out infinite;
    }

    .phone-screen {
      width: 100%;
      height: 100%;
      border-radius: 20px;
      background:
        linear-gradient(180deg, #fff8ec, #f1dec5);
      position: relative;
      overflow: hidden;
    }

    .phone-screen::before,
    .phone-screen::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      height: 9px;
      border-radius: 999px;
      background: rgba(136, 73, 27, 0.22);
    }

    .phone-screen::before {
      top: 40px;
    }

    .phone-screen::after {
      top: 64px;
      width: 52%;
      right: auto;
    }

    .panel-list {
      margin: 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .panel-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #4c443b;
      font-size: 15px;
    }

    .check {
      flex: 0 0 auto;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: inline-grid;
      place-items: center;
      background: #e9f3ed;
      color: var(--green);
      font-weight: 900;
      font-size: 13px;
      margin-top: 2px;
    }

    .section {
      padding: 34px 0;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 22px;
    }

    .section-kicker {
      margin: 0 0 8px;
      color: var(--brand-dark);
      font-weight: 800;
      font-size: 14px;
      letter-spacing: 0.05em;
    }

    h2 {
      margin: 0;
      font-size: clamp(24px, 4.2vw, 38px);
      line-height: 1.18;
      letter-spacing: -0.035em;
      color: #29231d;
    }

    .section-head p {
      margin: 12px 0 0;
      color: var(--muted);
    }

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

    .feature-item {
      padding: 22px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.68);
      border: 1px solid rgba(234, 223, 206, 0.95);
      box-shadow: 0 12px 28px rgba(94, 61, 29, 0.08);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .feature-item:hover,
    .step-card:hover,
    .qa-item:hover {
      transform: translateY(-3px);
      box-shadow: 0 18px 36px rgba(94, 61, 29, 0.13);
    }

    .feature-item h3,
    .step-card h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.35;
      color: #2d2822;
    }

    .feature-item p,
    .step-card p {
      margin: 0;
      color: #665d53;
      font-size: 15px;
    }

    .number {
      display: inline-grid;
      place-items: center;
      width: 34px;
      height: 34px;
      border-radius: 12px;
      margin-bottom: 14px;
      background: #f4e4ce;
      color: var(--brand-dark);
      font-weight: 900;
    }

    .content-box {
      padding: 28px;
      border-radius: calc(var(--radius) + 4px);
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(234, 223, 206, 0.96);
      box-shadow: var(--shadow);
    }

    .article {
      display: grid;
      grid-template-columns: 0.92fr 1.08fr;
      gap: 24px;
      align-items: start;
    }

    .article-aside {
      position: sticky;
      top: 96px;
      padding: 22px;
      border-radius: 22px;
      background: #fff6e8;
      border: 1px solid #ead7bb;
    }

    .article-aside h3 {
      margin: 0 0 12px;
      font-size: 20px;
    }

    .aside-links {
      display: grid;
      gap: 8px;
    }

    .aside-links a {
      padding: 10px 12px;
      border-radius: 12px;
      color: #51483f;
      background: rgba(255, 255, 255, 0.6);
      border: 1px solid transparent;
      font-size: 14px;
    }

    .aside-links a:hover {
      border-color: #e8c99b;
      color: var(--brand-dark);
      background: #fff;
    }

    .article-body {
      display: grid;
      gap: 20px;
    }

    .text-block {
      padding: 24px;
      border-radius: 22px;
      background: #fffefb;
      border: 1px solid var(--line);
    }

    .text-block h3 {
      margin: 0 0 10px;
      font-size: 22px;
      line-height: 1.35;
      color: #2d2822;
    }

    .text-block p {
      margin: 0 0 12px;
      color: #5c534a;
    }

    .text-block p:last-child {
      margin-bottom: 0;
    }

    .bullet-list {
      margin: 12px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .bullet-list li {
      position: relative;
      padding-left: 24px;
      color: #5c534a;
    }

    .bullet-list li::before {
      content: "";
      position: absolute;
      left: 2px;
      top: 0.72em;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--brand);
    }

    .timeline {
      display: grid;
      gap: 14px;
    }

    .step-card {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      align-items: start;
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.76);
      border: 1px solid rgba(234, 223, 206, 0.96);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .step-icon {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: inline-grid;
      place-items: center;
      background: #e9f3ed;
      color: var(--green);
      font-weight: 900;
    }

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

    .compare-card {
      padding: 22px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background: #fffefb;
    }

    .compare-card.safe {
      border-color: #cde3d8;
      background: #f7fcf9;
    }

    .compare-card.warn {
      border-color: #ead0c7;
      background: #fff8f5;
    }

    .compare-card h3 {
      margin: 0 0 10px;
      font-size: 20px;
    }

    .compare-card ul {
      margin: 0;
      padding-left: 20px;
      color: #5d544b;
    }

    .qa-list {
      display: grid;
      gap: 12px;
    }

    .qa-item {
      border: 1px solid rgba(234, 223, 206, 0.96);
      background: rgba(255, 255, 255, 0.78);
      border-radius: 20px;
      overflow: hidden;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .qa-button {
      width: 100%;
      border: 0;
      background: transparent;
      color: #2d2822;
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      text-align: left;
      font: inherit;
      font-weight: 800;
      cursor: pointer;
    }

    .qa-button span:last-child {
      color: var(--brand-dark);
      font-size: 20px;
      line-height: 1;
      transition: transform 0.2s ease;
    }

    .qa-panel {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease;
    }

    .qa-panel p {
      margin: 0;
      padding: 0 20px 18px;
      color: #62594f;
    }

    .qa-item.open .qa-button span:last-child {
      transform: rotate(45deg);
    }

    .note {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      align-items: start;
      padding: 22px;
      border-radius: 24px;
      background: linear-gradient(135deg, #fff2de, #f5fbf7);
      border: 1px solid #ead7bb;
    }

    .note strong {
      display: block;
      margin-bottom: 4px;
      color: #2d2822;
    }

    .note p {
      margin: 0;
      color: #5e554b;
    }

    .footer {
      margin-top: 22px;
      background: #2c241d;
      color: #f8ead7;
      border-top: 1px solid #3f342b;
    }

    .footer-inner {
      padding: 28px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
    }

    .footer strong {
      color: #fff7ea;
    }

    .footer p {
      margin: 4px 0 0;
      color: #d7c2aa;
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .footer-links a {
      color: #f8ead7;
      border-bottom: 1px solid rgba(248, 234, 215, 0.42);
      font-size: 14px;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @keyframes floaty {
      0%, 100% {
        transform: translateY(0) rotate(-1deg);
      }
      50% {
        transform: translateY(-8px) rotate(1deg);
      }
    }

    @media (max-width: 860px) {
      .menu-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 14px;
        background: #fffaf2;
        border: 1px solid var(--line);
        border-radius: 18px;
        box-shadow: var(--shadow);
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        padding: 12px;
      }

      .nav-action {
        display: none;
      }

      .hero {
        padding-top: 36px;
      }

      .hero-grid,
      .article,
      .compare {
        grid-template-columns: 1fr;
      }

      .hero-copy,
      .hero-panel,
      .content-box {
        padding: 22px;
      }

      .article-aside {
        position: static;
      }

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

    @media (max-width: 560px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .nav {
        min-height: 66px;
      }

      .nav-links {
        top: 66px;
        left: 12px;
        right: 12px;
      }

      .hero-copy,
      .hero-panel,
      .content-box,
      .text-block,
      .compare-card {
        border-radius: 20px;
      }

      .hero-actions {
        flex-direction: column;
      }

      .button {
        width: 100%;
      }

      .step-card,
      .note {
        grid-template-columns: 1fr;
      }

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

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        animation: none !important;
        transition: none !important;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }