:root {
        --r: #f00;
        --b: #000;
        --w: #fff;
        --g: #404040;
        --m: #808080;
        --l: #d9d9d9;
        --bg: #f7f7f7;
        --max: 1160px;
        --f:
          Calibri, Carlito, "PingFang SC", "Microsoft YaHei",
          "Noto Sans CJK SC", "Segoe UI", Arial, sans-serif;
      }
      * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }
      html {
        scroll-behavior: smooth;
      }
      body {
        font-family: var(--f);
        color: #1a1a1a;
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
      }
      a {
        color: inherit;
        text-decoration: none;
      }
      .wrap {
        max-width: var(--max);
        margin: auto;
        padding: 0 24px;
      }
      .section {
        padding: 76px 0;
      }
      .k {
        color: var(--r);
        font-size: 12px;
        font-weight: 700;
        letter-spacing: 0;
        margin-bottom: 12px;
      }
      .lead {
        font-size: 18px;
        color: var(--g);
        max-width: 760px;
      }
      h2 {
        font-size: 34px;
        line-height: 1.3;
      }
      .header {
        position: sticky;
        top: 0;
        z-index: 10;
        background: #fff;
        border-bottom: 3px solid var(--r);
        box-shadow: 0 1px 6px #0002;
      }
      .head {
        height: 64px;
        display: flex;
        align-items: center;
        gap: 12px;
      }
      .header-brand {
        display: flex;
        align-items: center;
        gap: 12px;
        flex: 0 0 auto;
      }
      .itm {
        height: 32px;
      }
      .divider {
        height: 30px;
        width: 1px;
        background: var(--l);
      }
      .sltp {
        height: 40px;
      }
      .nav {
        display: flex;
        gap: 22px;
        margin-left: auto;
        font-size: 14px;
        font-weight: 700;
      }
      .lang {
        border-left: 1px solid var(--l);
        padding-left: 15px;
        white-space: nowrap;
      }
      .header-cta {
        padding: 8px 13px;
        white-space: nowrap;
        font-size: 13px;
      }
      .btn {
        display: inline-flex;
        justify-content: center;
        padding: 13px 23px;
        border: 2px solid var(--r);
        background: var(--r);
        color: #fff;
        font-weight: 700;
      }
      .btn.alt {
        background: transparent;
        border-color: #666;
      }
      .hero {
        background: #000;
        color: #fff;
      }
      .hero-grid {
        display: grid;
        grid-template-columns: 1.12fr 0.88fr;
        gap: 62px;
        align-items: center;
        padding: 72px 0;
      }
      .hero-brand {
        width: min(100%, 400px);
        margin-bottom: 28px;
      }
      .hero h1 {
        font-size: 48px;
        line-height: 1.28;
        margin: 14px 0 20px;
        max-width: 720px;
      }
      .hero p {
        font-size: 18px;
        color: #d8d8d8;
        max-width: 690px;
      }
      .actions {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        margin-top: 28px;
      }
      .photo {
        width: 100%;
        height: 480px;
        object-fit: cover;
      }
      .proofline {
        display: flex;
        gap: 22px;
        flex-wrap: wrap;
        border-top: 1px solid #333;
        padding-top: 20px;
        margin-top: 26px;
        font-size: 13px;
        color: #bbb;
      }
      .sector-proofline {
        color: #5d5d5d;
        border-top-color: var(--l);
      }
      .promise {
        border-bottom: 1px solid var(--l);
      }
      .promise-grid {
        display: grid;
        grid-template-columns: 1fr 1.4fr;
        gap: 42px;
        align-items: center;
        padding: 36px 0;
      }
      .checks {
        display: grid;
        grid-template-columns: 1fr 1fr;
        border: 1px solid var(--l);
      }
      .checks div {
        padding: 15px;
        border: 1px solid var(--l);
        font-size: 14px;
        font-weight: 700;
      }
      .checks b,
      .n {
        color: var(--r);
        margin-right: 7px;
      }
      .gray {
        background: var(--bg);
      }
      .grid3,
      .route {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1px;
        background: var(--l);
        border: 1px solid var(--l);
        margin-top: 34px;
      }
      .card {
        background: #fff;
        padding: 30px;
      }
      .card.dark {
        background: #000;
        color: #fff;
      }
      .card h3 {
        font-size: 22px;
        margin: 9px 0;
      }
      .card p,
      .card li {
        font-size: 15px;
        color: #5d5d5d;
      }
      .card.dark p,
      .card.dark li {
        color: #bbb;
      }
      .card ul {
        list-style: none;
        margin-top: 18px;
        border-top: 1px solid var(--l);
      }
      .card li {
        padding: 9px 0;
        border-bottom: 1px solid var(--l);
      }
      .tag {
        color: var(--r);
        font-size: 12px;
        font-weight: 700;
      }
      .black {
        background: #000;
        color: #fff;
      }
      .black .lead {
        color: #bbb;
      }
      .case-proof {
        background: var(--bg);
        border-top: 1px solid var(--l);
        border-bottom: 1px solid var(--l);
      }
      .case-proof-grid {
        display: grid;
        grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
        gap: 48px;
        align-items: start;
        margin-top: 34px;
      }
      .case-proof-visual {
        margin: 0;
        position: relative;
        background: #000;
      }
      .case-proof-media {
        position: relative;
      }
      .case-proof-visual img {
        display: block;
        width: 100%;
        height: auto;
        aspect-ratio: 8 / 5;
        object-fit: cover;
      }
      .case-proof-visual figcaption {
        padding: 12px 16px;
        color: #bbb;
        font-size: 12px;
        border-top: 1px solid #333;
      }
      .case-proof-status {
        position: absolute;
        top: 16px;
        left: 16px;
        background: var(--r);
        color: #fff;
        font-size: 12px;
        font-weight: 700;
        padding: 8px 10px;
      }
      .case-proof-steps {
        border-top: 1px solid #b5b5b5;
      }
      .case-proof-step {
        display: grid;
        grid-template-columns: 42px minmax(0, 1fr);
        gap: 14px;
        padding: 16px 0;
        border-bottom: 1px solid #b5b5b5;
      }
      .case-proof-step > span {
        color: var(--r);
        font-weight: 700;
      }
      .case-proof-step h3 {
        font-size: 17px;
        margin: 0 0 4px;
      }
      .case-proof-step p {
        color: #5d5d5d;
        font-size: 14px;
      }
      .case-proof-result {
        margin-top: 20px;
        background: #000;
        color: #fff;
        padding: 22px;
        border-left: 6px solid var(--r);
      }
      .case-proof-result b {
        display: block;
        color: var(--r);
        font-size: 12px;
        margin-bottom: 8px;
      }
      .case-proof-result p {
        font-size: 18px;
        line-height: 1.55;
      }
      .case-proof-link {
        display: inline-flex;
        margin-top: 20px;
        color: var(--r);
        font-weight: 700;
        font-size: 14px;
      }
      .facility-proof {
        background: #fff;
        border-top: 1px solid var(--l);
        border-bottom: 1px solid var(--l);
      }
      .facility-heading {
        display: grid;
        grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
        gap: 44px;
        align-items: end;
      }
      .facility-heading .lead {
        max-width: 560px;
        justify-self: end;
      }
      .facility-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
        margin-top: 34px;
      }
      .facility-grid figure {
        margin: 0;
        min-width: 0;
      }
      .facility-grid img {
        display: block;
        width: 100%;
        height: auto;
        aspect-ratio: 4 / 3;
        object-fit: cover;
        background: var(--bg);
      }
      .facility-grid .workshop img {
        object-position: center 57%;
      }
      .facility-grid .injection img {
        object-position: center 61%;
      }
      .facility-grid figcaption {
        display: grid;
        grid-template-columns: 8px 1fr;
        gap: 14px;
        padding: 15px 0;
        border-bottom: 1px solid var(--l);
        color: var(--g);
        font-size: 14px;
      }
      .facility-grid figcaption::before {
        content: "";
        width: 8px;
        height: 8px;
        background: var(--r);
        margin-top: 8px;
      }
      .facility-grid strong {
        display: block;
        color: #1a1a1a;
        font-size: 17px;
        margin-bottom: 2px;
      }
      .facility-actions {
        display: flex;
        gap: 22px;
        align-items: center;
        flex-wrap: wrap;
        margin-top: 28px;
      }
      .facility-link {
        padding: 8px 0;
        border-bottom: 2px solid var(--r);
        font-size: 14px;
        font-weight: 700;
      }
      .route {
        background: #333;
      }
      .route article {
        background: #090909;
        color: #fff;
        padding: 30px;
      }
      .route h3 {
        font-size: 22px;
        margin: 12px 0;
      }
      .route p {
        color: #bbb;
      }
      .flow {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 1px;
        background: var(--l);
        margin-top: 34px;
      }
      .flow div {
        background: #fff;
        padding: 20px;
        min-height: 160px;
      }
      .flow h3 {
        font-size: 16px;
        margin: 14px 0 5px;
      }
      .flow p {
        font-size: 13px;
        color: #666;
      }
      .contact {
        display: grid;
        grid-template-columns: 0.8fr 1.2fr;
        gap: 40px;
        margin-top: 34px;
      }
      .box {
        border: 1px solid var(--l);
        padding: 26px;
      }
      .box h3 {
        margin-bottom: 12px;
      }
      .box p {
        color: #5d5d5d;
        margin-bottom: 10px;
      }
      .fields {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 13px;
      }
      .field {
        display: flex;
        flex-direction: column;
        gap: 5px;
      }
      .full {
        grid-column: 1/-1;
      }
      .field label {
        font-size: 13px;
        font-weight: 700;
      }
      .field input,
      .field select,
      .field textarea {
        font: inherit;
        border: 1px solid var(--l);
        padding: 10px;
        width: 100%;
      }
      .field textarea {
        min-height: 105px;
      }
      .note {
        font-size: 12px;
        color: #666;
        margin-top: 12px;
      }
      .faq {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
        margin-top: 30px;
      }
      details {
        border: 1px solid var(--l);
        padding: 19px;
        background: #fff;
      }
      summary {
        font-weight: 700;
        cursor: pointer;
      }
      details p {
        margin-top: 10px;
        color: #5d5d5d;
      }
      .cta {
        background: #000;
        color: #fff;
        padding: 65px 0;
      }
      .cta h2 {
        font-size: 36px;
      }
      .cta p {
        color: #bbb;
        margin: 12px 0 24px;
        max-width: 760px;
      }
      footer {
        background: #0b0b0b;
        color: #aaa;
        padding: 42px 0;
      }
      .footer {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 34px;
      }
      .footer-logo {
        width: min(100%, 340px);
        margin-bottom: 15px;
      }
      footer strong {
        color: #fff;
        display: block;
        margin-bottom: 10px;
      }
      footer a {
        display: block;
        margin: 7px 0;
      }
      .credentials {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 1px;
        margin-top: 1px;
        background: #333;
        border: 1px solid #333;
      }
      .credential {
        min-height: 150px;
        padding: 24px;
        background: #080808;
      }
      .credential strong {
        display: block;
        margin-bottom: 10px;
        color: #fff;
        font-size: 22px;
      }
      .credential p {
        color: #bbb;
        font-size: 14px;
      }
      .iso-actions {
        display: flex;
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
      }
      @media (max-width: 900px) {
        .nav {
          display: none;
        }
        .credentials {
          grid-template-columns: 1fr 1fr;
        }
        .hero-grid,
        .promise-grid,
        .contact,
        .footer,
        .facility-heading,
        .case-proof-grid {
          grid-template-columns: 1fr;
        }
        .grid3,
        .route {
          grid-template-columns: 1fr;
        }
        .flow {
          grid-template-columns: 1fr 1fr;
        }
        .hero h1 {
          font-size: 38px;
        }
        .photo {
          height: 360px;
        }
        .facility-heading .lead {
          justify-self: start;
        }
        .lang {
          margin-left: auto;
        }
      }
      @media (max-width: 600px) {
        .wrap {
          padding: 0 20px;
        }
        .section {
          padding: 60px 0;
        }
        .head {
          gap: 8px;
        }
        .itm {
          height: 26px;
        }
        .sltp {
          height: 34px;
          max-width: 122px;
        }
        .lang {
          font-size: 13px;
          padding-left: 10px;
        }
        .header-cta {
          padding: 7px 9px;
          font-size: 12px;
        }
        .hero-grid {
          padding: 62px 0;
        }
        .hero h1 {
          font-size: 33px;
        }
        .hero-brand {
          width: 300px;
        }
        .photo {
          display: none;
        }
        h2 {
          font-size: 28px;
        }
        .checks,
        .fields,
        .faq,
        .flow,
        .facility-grid {
          grid-template-columns: 1fr;
        }
        .credentials {
          grid-template-columns: 1fr;
        }
        .actions .btn {
          width: 100%;
        }
      }
      @media (min-width: 601px) {
        .hero-grid {
          padding-left: 24px;
          padding-right: 24px;
        }
      }
      @media (max-width: 600px) {
        .hero-grid {
          padding-left: 20px;
          padding-right: 20px;
        }
        .hero h1 {
          font-size: 31px;
        }
      }
      .service-logo {
        display: block;
        width: 112px;
        height: 92px;
        object-fit: contain;
        object-position: left center;
        margin: 14px 0 2px;
      }
      .service-link {
        display: block;
        margin-top: 22px;
        color: var(--r);
        font-weight: 700;
      }
      .iso-proof {
        margin-top: 1px;
        border: 1px solid #333;
        background: #080808;
        padding: 24px;
        display: grid;
        grid-template-columns: minmax(180px, 0.42fr) minmax(0, 1.58fr) auto;
        gap: 24px;
        align-items: center;
      }
      .iso-proof strong {
        font-size: 20px;
        color: #fff;
      }
      .iso-proof p {
        font-size: 14px;
        color: #bbb;
      }
      .iso-proof a {
        font-size: 13px;
        font-weight: 700;
        color: var(--r);
        white-space: nowrap;
      }
      .low-intake {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1px;
        background: var(--l);
        border: 1px solid var(--l);
        margin: 28px 0 0;
      }
      .low-intake article {
        background: var(--bg);
        padding: 20px;
        display: flex;
        flex-direction: column;
        min-height: 170px;
      }
      .low-intake b {
        font-size: 16px;
        margin-bottom: 8px;
      }
      .low-intake p {
        font-size: 13px;
        color: #666;
        margin-bottom: 14px;
      }
      .low-intake a {
        margin-top: auto;
        color: var(--r);
        font-weight: 700;
        font-size: 13px;
        display: inline-flex;
        align-items: center;
        min-height: 34px;
        padding-top: 6px;
      }
      .field small {
        display: block;
        color: #666;
        margin-top: 2px;
      }
      .technical-field {
        display: none;
      }
      .box[data-mode="technical"] .technical-field {
        display: flex;
      }
      .privacy-extra {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        margin-top: 18px;
        font-size: 13px;
        color: #666;
      }
      .privacy-extra input {
        width: 18px;
        height: 18px;
        margin-top: 3px;
      }
      .privacy-extra a {
        text-decoration: underline;
        color: #1a1a1a;
      }
      .server-error {
        color: var(--r);
        font-weight: 700;
        margin-top: 14px;
      }
      .zh-confirm {
        display: none;
        border: 2px solid var(--r);
        padding: 26px;
        background: var(--bg);
      }
      .zh-confirm.show {
        display: block;
      }
      .zh-confirm h3 {
        font-size: 22px;
        margin-bottom: 8px;
      }
      .hp {
        position: absolute !important;
        left: -10000px !important;
        width: 1px !important;
        height: 1px !important;
        overflow: hidden !important;
      }
      /* Keep pure red as an accent while preserving readable text contrast. */
      .btn,
      .case-proof-status {
        color: #000;
      }
      .hero .btn.alt {
        color: #fff;
      }
      .promise .k {
        color: #000;
        border-left: 3px solid var(--r);
        padding-left: 8px;
      }
      .section:not(.black) .k {
        color: #000;
        border-left: 3px solid var(--r);
        padding-left: 8px;
      }
      .checks b,
      .section:not(.black) .n,
      .section:not(.black) .card:not(.dark) .tag,
      .case-proof-step > span {
        color: #000;
      }
      .case-proof-link,
      .section:not(.black) .card:not(.dark) .service-link,
      .low-intake a {
        color: #000;
        border-bottom: 2px solid var(--r);
      }
      .server-error {
        color: #000;
        border-left: 4px solid var(--r);
        background: var(--bg);
        padding: 10px 12px;
      }
      .skip-link {
        position: fixed;
        left: 12px;
        top: -80px;
        z-index: 1000;
        background: #000;
        color: #fff;
        border: 2px solid var(--r);
        padding: 10px 14px;
        font-weight: 700;
      }
      .skip-link:focus {
        top: 12px;
      }
      @media (max-width: 900px) {
        .low-intake,
        .iso-proof {
          grid-template-columns: 1fr;
        }
      }