/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
      --c-primary: #146857;
      --c-primary-deep: #0F5446;
      --c-primary-press: #0E4E41;
      --c-accent: #C4843A;
      --c-bg: #F2F4F1;
      --c-card: #FBFCFA;
      --c-dark: #12211C;
      --c-darker: #0C1814;
      --c-navstuck: #14352F;
      --c-text: #1C2422;
      --c-muted: #5C6B66;
      --c-inverse: #E7EEEA;
      --c-glow: #2BB39A;
      --c-line: #D7E0DC;
      --c-gray: #E6EBE8;
      --radius: 10px;
      --radius-sm: 8px;
      --radius-btn: 6px;
      --shadow: 0 8px 20px rgba(18, 33, 28, 0.08);
      --shadow-hover: 0 10px 22px rgba(18, 33, 28, 0.12);
      --space: 24px;
      --space-lg: 32px;
      --container: 1240px;
      --nav-h: 72px;
      --ease: 200ms ease;
      --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "HarmonyOS Sans SC", sans-serif;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font);
      font-size: 16.5px;
      line-height: 1.8;
      font-weight: 400;
      color: var(--c-text);
      background: var(--c-bg);
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    a { color: var(--c-primary); text-decoration: none; transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease); }
    a:hover { color: var(--c-primary-deep); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; border: 0; }
    h1, h2, h3, h4 { margin: 0; line-height: 1.28; color: var(--c-text); }
    h1 { font-size: 46px; font-weight: 700; }
    h2 { font-size: 32px; font-weight: 700; }
    h3 { font-size: 20px; font-weight: 700; }
    p { margin: 0 0 0.95em; }
    p:last-child { margin-bottom: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }
    .num { font-variant-numeric: tabular-nums; }

    /* ===== 容器 / 板块 ===== */
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    main { display: block; }
    section { padding: 104px 0; scroll-margin-top: 88px; }
    .sec-white { background: var(--c-card); }
    .sec-gray { background: var(--c-bg); }
    .sec-head { max-width: 760px; margin-bottom: 40px; }
    .sec-head h2 { margin-bottom: 12px; }
    .sec-head p { color: var(--c-muted); margin: 0; max-width: 46em; }
    .kicker {
      display: inline-block;
      font-size: 12px;
      letter-spacing: 0.12em;
      color: var(--c-primary);
      font-weight: 500;
      margin-bottom: 10px;
      border-left: 3px solid var(--c-accent);
      padding-left: 10px;
    }

    /* ===== 按钮 / 徽章 / 标签 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      min-width: 44px;
      padding: 0 20px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      line-height: 1;
      border: 1px solid transparent;
      transition: background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }
    .btn-primary { background: var(--c-primary); color: #fff; }
    .btn-primary:hover { background: var(--c-primary-deep); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-primary:active { background: var(--c-primary-press); transform: translateY(0); }
    .btn-ghost {
      background: #fff;
      color: var(--c-text);
      border-color: var(--c-accent);
    }
    .btn-ghost:hover { background: #FFF8F0; color: var(--c-text); transform: translateY(-2px); }
    .btn-ghost:active { transform: translateY(0); }
    .btn-light { background: transparent; color: var(--c-inverse); border-color: rgba(231, 238, 234, 0.45); }
    .btn-light:hover { background: rgba(231, 238, 234, 0.08); color: #fff; }
    .badge {
      display: inline-flex;
      align-items: center;
      height: 24px;
      padding: 0 8px;
      border: 1px solid rgba(215, 224, 220, 0.55);
      border-radius: 4px;
      font-size: 12px;
      color: var(--c-inverse);
      background: rgba(20, 104, 87, 0.28);
      font-weight: 500;
    }
    .tag {
      display: inline-block;
      padding: 2px 8px;
      border-radius: 4px;
      background: #E7F3EF;
      color: var(--c-primary);
      font-size: 12px;
      font-weight: 500;
    }

    /* ===== 卡片通用 ===== */
    .card {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      border-top: 3px solid var(--c-accent);
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }

    /* ===== Skip ===== */
    .skip {
      position: absolute;
      left: 12px;
      top: -48px;
      background: var(--c-primary);
      color: #fff;
      padding: 8px 12px;
      z-index: 100;
    }
    .skip:focus { top: 12px; }

    /* ===== 双行导航 ===== */
    .site-header { position: relative; z-index: 50; }
    .topbar {
      background: var(--c-dark);
      color: var(--c-inverse);
      font-size: 13px;
      min-height: 38px;
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 38px;
    }
    .trust-copy { color: #C9D6D1; }
    .topbar-right {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .topbar a { color: var(--c-inverse); }
    .topbar a:hover { color: var(--c-glow); }
    .top-badges { display: flex; gap: 6px; }
    .nav-main {
      background: #FBFCFA;
      border-bottom: 1px solid var(--c-line);
      height: var(--nav-h);
    }
    .nav-main.is-stuck {
      position: sticky;
      top: 0;
      background: var(--c-navstuck);
      border-bottom-color: #0F2A25;
    }
    .nav-main.is-stuck .logo-name,
    .nav-main.is-stuck .logo-sub,
    .nav-main.is-stuck .nav-links a { color: var(--c-inverse); }
    .nav-main.is-stuck .nav-links a.is-active,
    .nav-main.is-stuck .nav-links a:hover { color: var(--c-glow); }
    .nav-main.is-stuck .logo-mark { border-color: var(--c-glow); background: #0F2A25; }
    .nav-inner {
      height: var(--nav-h);
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 0 0 auto;
      color: var(--c-text);
    }
    .logo:hover { color: var(--c-text); }
    .logo-mark {
      width: 36px;
      height: 36px;
      border: 1px solid var(--c-primary);
      border-radius: 6px;
      display: grid;
      place-items: center;
      background: #E8F4F0;
      flex: 0 0 auto;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-name { font-weight: 700; font-size: 16px; color: var(--c-text); }
    .logo-sub { font-size: 12px; color: var(--c-muted); font-weight: 500; }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
      flex: 1;
      justify-content: center;
      flex-wrap: nowrap;
      white-space: nowrap;
    }
    .nav-links a {
      color: var(--c-text);
      font-weight: 500;
      font-size: 14px;
      padding: 8px 10px;
      border-radius: 4px;
    }
    .nav-links a:hover,
    .nav-links a.is-active { color: var(--c-primary); background: rgba(20, 104, 87, 0.08); }
    .nav-cta { margin-left: auto; flex: 0 0 auto; }
    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      background: transparent;
      border-radius: 6px;
      padding: 10px;
      margin-left: auto;
    }
    .menu-btn span,
    .menu-btn span::before,
    .menu-btn span::after {
      display: block;
      height: 2px;
      background: currentColor;
      position: relative;
      transition: transform var(--ease);
    }
    .menu-btn span::before,
    .menu-btn span::after { content: ""; position: absolute; left: 0; right: 0; }
    .menu-btn span::before { top: -7px; }
    .menu-btn span::after { top: 7px; }
    .nav-main.is-stuck .menu-btn { color: #fff; }
    .drawer {
      position: fixed;
      inset: 0 0 0 auto;
      width: min(86vw, 360px);
      background: var(--c-darker);
      color: var(--c-inverse);
      transform: translateX(100%);
      transition: transform 220ms ease;
      z-index: 80;
      padding: 88px 28px 32px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer a {
      color: var(--c-inverse);
      font-weight: 500;
      padding: 12px 8px;
      border-bottom: 1px solid rgba(231, 238, 234, 0.08);
      min-height: 44px;
    }
    .drawer-mask {
      position: fixed;
      inset: 0;
      background: rgba(12, 24, 20, 0.46);
      opacity: 0;
      pointer-events: none;
      transition: opacity var(--ease);
      z-index: 70;
    }
    .drawer-mask.is-open { opacity: 1; pointer-events: auto; }

    /* ===== Hero 轮播 ===== */
    #hero {
      padding: 0;
      position: relative;
      background: var(--c-dark);
      scroll-margin-top: 0;
    }
    .hero-slider { position: relative; overflow: hidden; min-height: 640px; }
    .slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      visibility: hidden;
      transition: opacity 420ms ease, visibility 420ms ease;
    }
    .slide.is-active { opacity: 1; visibility: visible; position: relative; }
    .slide-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
    }
    .slide-bg::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(18, 33, 28, 0.92) 0%, rgba(18, 33, 28, 0.70) 46%, rgba(18, 33, 28, 0.18) 100%);
    }
    .slide-inner {
      position: relative;
      z-index: 2;
      min-height: 640px;
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
      gap: 32px;
      align-items: end;
      padding: 92px 0 78px;
    }
    .hero-copy { color: var(--c-inverse); max-width: 680px; text-align: left; }
    .hero-copy h1,
    .hero-copy .slide-title {
      font-size: 46px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .hero-lead {
      font-size: 17px;
      color: #D5DFDA;
      margin-bottom: 28px;
      max-width: 34em;
    }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
    .trust-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      font-size: 13px;
      color: #B7C6C0;
      border-top: 1px solid rgba(231, 238, 234, 0.16);
      padding-top: 14px;
    }
    .console {
      background: rgba(12, 24, 20, 0.78);
      border: 1px solid rgba(43, 179, 154, 0.28);
      border-radius: 10px;
      padding: 18px 18px 16px;
      color: #D7EEE7;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
      align-self: center;
    }
    .console-head {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--c-glow);
      margin-bottom: 12px;
      letter-spacing: 0.04em;
    }
    .console pre {
      margin: 0 0 14px;
      font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
      font-size: 12.5px;
      line-height: 1.7;
      color: #E7EEEA;
      white-space: pre-wrap;
      font-variant-numeric: tabular-nums;
    }
    .hero-ctrl {
      position: absolute;
      inset: auto 0 18px 0;
      z-index: 3;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
    }
    .hero-arrow, .hero-pause, .dot {
      width: 44px;
      height: 44px;
      border-radius: 6px;
      background: rgba(18, 33, 28, 0.55);
      color: #fff;
      border: 1px solid rgba(231, 238, 234, 0.2);
    }
    .hero-arrow:hover, .hero-pause:hover { background: var(--c-primary); }
    .dots { display: flex; gap: 8px; }
    .dot { width: 10px; height: 10px; border-radius: 50%; padding: 0; min-width: 10px; min-height: 10px; background: rgba(231, 238, 234, 0.35); }
    .dot[aria-current="true"] { background: var(--c-glow); width: 22px; border-radius: 8px; }

    /* ===== 介绍 ===== */
    .intro-grid {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 48px;
      align-items: start;
    }
    .spec-table { margin: 22px 0; font-size: 14.5px; }
    .spec-table th, .spec-table td {
      text-align: left;
      padding: 10px 12px;
      border-bottom: 1px solid var(--c-line);
    }
    .spec-table th { width: 28%; color: var(--c-muted); font-weight: 500; background: #F5F8F6; }
    .bound {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 8px;
    }
    .bound div {
      border: 1px solid var(--c-line);
      border-radius: 8px;
      padding: 14px 16px;
      background: #fff;
    }
    .bound h3 { font-size: 15px; margin-bottom: 8px; }
    .bound p { font-size: 14px; color: var(--c-muted); }
    .intro-fig { position: relative; }
    .intro-fig img { width: 100%; height: 460px; object-fit: cover; }
    .intro-cap {
      position: absolute;
      left: 16px;
      bottom: 16px;
      background: rgba(18, 33, 28, 0.82);
      color: var(--c-inverse);
      padding: 8px 12px;
      font-size: 13px;
      border-radius: 6px;
    }

    /* ===== 服务矩阵 ===== */
    .scenes-wrap { position: relative; }
    .scenes-wrap > input { position: absolute; opacity: 0; pointer-events: none; }
    .scenes-layout {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 24px;
      min-height: 420px;
    }
    .scene-nav {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .scene-nav label {
      display: block;
      padding: 14px 16px;
      border: 1px solid var(--c-line);
      border-radius: 8px;
      background: #fff;
      cursor: pointer;
      font-weight: 500;
      min-height: 52px;
      transition: border-color var(--ease), background var(--ease), color var(--ease);
    }
    .scene-nav label:hover { border-color: var(--c-primary); }
    .scene-panel {
      display: none;
      background: #fff;
      border: 1px solid var(--c-line);
      border-top: 3px solid var(--c-accent);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow);
    }
    .scene-panel h3 { margin-bottom: 10px; }
    .scene-panel p { color: var(--c-muted); }
    .scene-meta {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin: 16px 0;
    }
    .scene-meta span {
      background: var(--c-bg);
      border: 1px solid var(--c-line);
      border-radius: 4px;
      padding: 4px 8px;
      font-size: 13px;
    }
    #sc1:checked ~ .scenes-layout label[for="sc1"],
    #sc2:checked ~ .scenes-layout label[for="sc2"],
    #sc3:checked ~ .scenes-layout label[for="sc3"],
    #sc4:checked ~ .scenes-layout label[for="sc4"],
    #sc5:checked ~ .scenes-layout label[for="sc5"] {
      background: var(--c-primary);
      color: #fff;
      border-color: var(--c-primary);
    }
    #sc1:checked ~ .scenes-layout .p1,
    #sc2:checked ~ .scenes-layout .p2,
    #sc3:checked ~ .scenes-layout .p3,
    #sc4:checked ~ .scenes-layout .p4,
    #sc5:checked ~ .scenes-layout .p5 { display: block; }

    /* ===== 优势 6 卡 ===== */
    .adv-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .adv-card { padding: 24px; }
    .adv-ico {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: #E8F4F0;
      color: var(--c-primary);
      display: grid;
      place-items: center;
      margin-bottom: 14px;
    }
    .adv-card h3 { margin-bottom: 10px; font-size: 18px; }
    .adv-card p { color: var(--c-muted); font-size: 15px; }

    /* ===== 产品 ===== */
    .prod-grid {
      display: grid;
      grid-template-columns: 1.25fr 1fr 1fr;
      gap: 24px;
      align-items: stretch;
    }
    .prod-card { overflow: hidden; display: flex; flex-direction: column; }
    .prod-card img { width: 100%; height: 210px; object-fit: cover; border-radius: 0; }
    .prod-card.featured img { height: 280px; }
    .prod-body { padding: 20px 20px 22px; flex: 1; display: flex; flex-direction: column; }
    .prod-body h3 { margin: 8px 0 8px; }
    .prod-body p { color: var(--c-muted); font-size: 15px; flex: 1; }
    .params {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin: 14px 0 16px;
      font-size: 13px;
    }
    .params span {
      background: var(--c-bg);
      border: 1px solid var(--c-line);
      border-radius: 6px;
      padding: 8px 10px;
    }
    .params b { display: block; color: var(--c-muted); font-weight: 500; font-size: 12px; }

    /* ===== 统计条 ===== */
    #metrics { padding: 36px 0; background: #E8EEEB; }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
    }
    .metric {
      text-align: left;
      padding: 8px 12px;
      border-left: 3px solid var(--c-accent);
    }
    .metric b {
      display: block;
      font-size: 32px;
      color: var(--c-primary);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }
    .metric span { color: var(--c-muted); font-size: 13px; }

    /* ===== 流程 ===== */
    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 8%;
      right: 8%;
      top: 18px;
      height: 2px;
      background: var(--c-primary);
    }
    .step { position: relative; padding-top: 44px; }
    .step i {
      position: absolute;
      top: 8px;
      left: 0;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--c-primary);
      color: #fff;
      font-style: normal;
      font-size: 12px;
      display: grid;
      place-items: center;
      font-variant-numeric: tabular-nums;
    }
    .step h3 { font-size: 16px; margin-bottom: 8px; }
    .step p { color: var(--c-muted); font-size: 14.5px; }

    /* ===== 深色理念 ===== */
    #philosophy {
      background: var(--c-dark);
      color: var(--c-inverse);
      padding: 96px 0;
    }
    #philosophy h2 { color: #fff; margin-bottom: 16px; }
    .philo-grid {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 40px;
      align-items: center;
    }
    .philo-list { margin-top: 18px; }
    .philo-list li {
      padding: 12px 0 12px 16px;
      border-left: 3px solid var(--c-accent);
      margin-bottom: 10px;
      color: #D5DFDA;
    }
    .philo-grid img { width: 100%; height: 360px; object-fit: cover; }

    /* ===== 案例墙 ===== */
    .cases-wall {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 20px;
    }
    .case-card {
      grid-column: span 4;
      overflow: hidden;
      background: #fff;
    }
    .case-card:nth-child(1) { grid-column: span 7; }
    .case-card:nth-child(2) { grid-column: span 5; }
    .case-card:nth-child(3),
    .case-card:nth-child(4),
    .case-card:nth-child(5) { grid-column: span 4; }
    .case-card:nth-child(6) { grid-column: span 5; }
    .case-card:nth-child(7) { grid-column: span 7; }
    .case-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
    .case-card:nth-child(1) img,
    .case-card:nth-child(7) img { height: 230px; }
    .case-body { padding: 16px 18px 18px; }
    .case-body h3 { font-size: 17px; margin-bottom: 6px; }
    .case-body p { color: var(--c-muted); font-size: 14.5px; }
    .case-card details summary {
      list-style: none;
      cursor: pointer;
      color: var(--c-primary);
      font-weight: 500;
      margin-top: 8px;
    }
    .case-card details summary::-webkit-details-marker { display: none; }

    /* ===== 故事 ===== */
    .story {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 28px;
      margin-bottom: 28px;
      background: #fff;
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      overflow: hidden;
      border-top: 3px solid var(--c-accent);
    }
    .story:nth-child(even) { grid-template-columns: 1.1fr 0.9fr; }
    .story:nth-child(even) .story-fig { order: 2; }
    .story img { width: 100%; height: 100%; min-height: 260px; object-fit: cover; border-radius: 0; }
    .story-body { padding: 28px 28px 28px 8px; }
    .story blockquote {
      margin: 12px 0 16px;
      padding-left: 14px;
      border-left: 3px solid var(--c-primary);
      color: var(--c-text);
      font-size: 16px;
    }

    /* ===== 评价 ===== */
    .rev-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .rev-card { padding: 22px; }
    .stars { color: var(--c-accent); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .rev-card p { color: var(--c-muted); font-size: 15px; }
    .rev-who {
      margin-top: 14px;
      display: flex;
      gap: 10px;
      align-items: center;
      font-size: 13px;
    }
    .avatar {
      width: 36px;
      height: 36px;
      border-radius: 6px;
      background: #E8F4F0;
      color: var(--c-primary);
      display: grid;
      place-items: center;
      font-weight: 700;
    }

    /* ===== 专题 ===== */
    .topic-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .topic {
      padding: 24px;
      min-height: 220px;
      display: flex;
      flex-direction: column;
    }
    .topic p { color: var(--c-muted); flex: 1; }
    .topic a { margin-top: 12px; font-weight: 500; }

    /* ===== 资讯 ===== */
    .news-list { display: flex; flex-direction: column; gap: 16px; }
    .news-card {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 20px;
      background: #fff;
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      overflow: hidden;
      border-top: 3px solid var(--c-accent);
    }
    .news-card img { width: 100%; height: 140px; object-fit: cover; border-radius: 0; }
    .news-body { padding: 16px 18px 16px 0; }
    .news-body time { color: var(--c-muted); font-size: 13px; }
    .news-body h3 { font-size: 18px; margin: 4px 0 8px; }
    .news-body p { color: var(--c-muted); font-size: 14.5px; }
    .news-more { margin-top: 18px; }

    /* ===== 合作 ===== */
    .partner-wall {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 12px;
      margin-bottom: 24px;
    }
    .partner-item {
      background: #fff;
      border: 1px solid var(--c-line);
      border-radius: 8px;
      min-height: 72px;
      display: grid;
      place-items: center;
      color: #7A8883;
      font-weight: 500;
      font-size: 14px;
      filter: grayscale(0.4);
      text-align: center;
      padding: 8px;
    }
    .std-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .std-bar span {
      border: 1px dashed var(--c-line);
      padding: 6px 10px;
      border-radius: 4px;
      font-size: 13px;
      color: var(--c-muted);
      background: #fff;
    }

    /* ===== FAQ ===== */
    .faq-list { border-top: 1px solid var(--c-line); }
    .faq-item { border-bottom: 1px solid var(--c-line); background: transparent; }
    .faq-btn {
      width: 100%;
      text-align: left;
      background: transparent;
      padding: 18px 8px;
      font-weight: 500;
      color: var(--c-text);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      min-height: 56px;
    }
    .faq-btn[aria-expanded="true"] { color: var(--c-primary); }
    .faq-btn span.sign { color: var(--c-accent); font-variant-numeric: tabular-nums; }
    .faq-panel {
      display: none;
      padding: 0 8px 18px;
      color: var(--c-muted);
      line-height: 1.8;
    }
    .faq-panel.is-open { display: block; }

    /* ===== 保障条 ===== */
    #guarantee { background: #E4E9E6; padding: 56px 0; }
    .gua-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .gua-item h3 { font-size: 16px; margin-bottom: 8px; }
    .gua-item p { color: var(--c-muted); font-size: 14.5px; }

    /* ===== 联系表单 ===== */
    .contact-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
    }
    .form-card { padding: 28px; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 14px; font-weight: 500; }
    .field input, .field select, .field textarea {
      min-height: 44px;
      border: 1px solid #C9D4CF;
      border-radius: 6px;
      padding: 8px 12px;
      background: #fff;
      color: var(--c-text);
    }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus {
      outline: 2px solid var(--c-primary);
      outline-offset: 2px;
      border-color: var(--c-primary);
    }
    .form-note { color: var(--c-muted); font-size: 13px; margin: 8px 0 14px; }
    .form-msg {
      display: none;
      margin-top: 12px;
      padding: 10px 12px;
      border-radius: 6px;
      font-size: 14px;
    }
    .form-msg.error { display: block; background: #FDECEC; color: #8A2A2A; }
    .form-msg.ok { display: block; background: #E7F6F1; color: var(--c-primary-deep); }
    .contact-side h3 { margin: 16px 0 8px; }
    .contact-side p, .contact-side a { color: var(--c-muted); }
    .map-box {
      margin-top: 16px;
      height: 180px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--c-line);
    }
    .map-box img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--c-darker);
      color: #C9D6D1;
      padding: 56px 0 24px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1.1fr 0.9fr;
      gap: 32px;
      margin-bottom: 28px;
    }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { color: #C9D6D1; }
    .site-footer a:hover { color: var(--c-glow); }
    .foot-nav { display: flex; flex-direction: column; gap: 8px; }
    .foot-copy {
      border-top: 1px solid rgba(231, 238, 234, 0.1);
      padding-top: 16px;
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    .brand-foot .logo-name { color: #fff; }

    /* ===== 1280 ===== */
    @media (max-width: 1280px) {
      h1, .hero-copy h1, .hero-copy .slide-title { font-size: 40px; }
      h2 { font-size: 28px; }
      .slide-inner, .hero-slider, .slide-inner { min-height: 600px; }
    }

    /* ===== 1024 ===== */
    @media (max-width: 1024px) {
      .nav-links, .nav-cta { display: none; }
      .menu-btn { display: inline-flex; align-items: center; justify-content: center; color: var(--c-text); }
      .slide-inner { grid-template-columns: 1fr; min-height: 580px; align-items: center; padding: 72px 0 88px; }
      .console { max-width: 520px; }
      .intro-grid, .philo-grid, .contact-grid { grid-template-columns: 1fr; }
      .prod-grid { grid-template-columns: 1fr; }
      .prod-card.featured img { height: 260px; }
      .prod-card img { height: 190px; }
      .metrics-row { grid-template-columns: repeat(3, 1fr); }
      .timeline { grid-template-columns: 1fr; }
      .timeline::before { display: none; }
      .step { padding-top: 0; padding-left: 36px; }
      .rev-grid, .topic-row, .gua-row { grid-template-columns: 1fr 1fr; }
      .partner-wall { grid-template-columns: repeat(3, 1fr); }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story:nth-child(even) .story-fig { order: 0; }
      .cases-wall .case-card,
      .case-card:nth-child(n) { grid-column: span 6; }
      .top-badges { display: none; }
    }

    /* ===== 768 ===== */
    @media (max-width: 768px) {
      section { padding: 64px 0; }
      .container { width: min(100% - 32px, var(--container)); }
      h1, .hero-copy h1, .hero-copy .slide-title { font-size: 30px; }
      h2 { font-size: 24px; }
      .topbar-inner { justify-content: flex-end; }
      .trust-copy { display: none; }
      .scenes-layout { grid-template-columns: 1fr; }
      .adv-grid, .rev-grid, .topic-row, .gua-row, .metrics-row, .form-grid { grid-template-columns: 1fr; }
      .bound { grid-template-columns: 1fr; }
      .news-card { grid-template-columns: 1fr; }
      .news-body { padding: 0 16px 16px; }
      .cases-wall .case-card,
      .case-card:nth-child(n) { grid-column: span 12; }
      .partner-wall { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr; }
      .hero-slider, .slide-inner { min-height: 560px; }
      .intro-fig img { height: 280px; }
    }

    /* ===== 520 / 375 ===== */
    @media (max-width: 520px) {
      body { font-size: 16px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .btn { width: 100%; }
      .nav-cta .btn { width: auto; }
      .topbar-right { gap: 10px; font-size: 12px; }
      .work-hours { display: none; }
      .console pre { font-size: 12px; }
      .prod-card.featured img { height: 240px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }

/* roulang page: index */
:root{
  --green:#1B5E4A;
  --green-deep:#134536;
  --copper:#D9772C;
  --copper-soft:#E8B07A;
  --ink:#15231E;
  --mist:#F3F0EA;
  --paper:#FBFBFA;
  --text:#1A1D1C;
  --muted:#4E5854;
  --faint:#7A847F;
  --line:#C9D0CB;
  --line-strong:#9AA59F;
  --ok:#3BA68A;
  --danger:#C45C1A;
  --radius-card:9px;
  --radius-btn:5px;
  --shadow:0 8px 18px rgba(0,0,0,.08);
  --space:120px;
  --space-m:72px;
  --w:1240px;
  --header:72px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--paper);
  line-height:1.8;
  font-size:16px;
  letter-spacing:.01em;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--green);text-decoration:none;transition:color .2s,border-color .2s,background .2s,transform .2s}
a:hover{color:var(--copper)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--text);letter-spacing:.02em}
h1{font-size:clamp(28px,4vw,44px);font-weight:800}
h2{font-size:clamp(22px,2.4vw,32px);font-weight:800}
h3{font-size:18px;font-weight:700}
.container{width:min(var(--w),calc(100% - 48px));margin:0 auto}
.skip-link{
  position:absolute;left:12px;top:-48px;z-index:100;
  background:var(--copper);color:#fff;padding:8px 14px;border-radius:var(--radius-btn);
}
.skip-link:focus{top:12px}
:focus{outline:2px solid transparent}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 18px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-weight:600;line-height:1.2;letter-spacing:.04em;
  transition:background .2s,border-color .2s,color .2s,transform .2s,box-shadow .2s;
}
.btn-primary{background:var(--green);color:#fff;border-bottom:2px solid transparent}
.btn-primary:hover,.btn-primary:active{background:var(--green-deep);color:#fff;border-bottom-color:var(--copper);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-ghost:hover{border-color:var(--copper);color:#fff;background:rgba(217,119,44,.16)}
.btn-line{background:transparent;color:var(--green);border:1px solid var(--green)}
.btn-line:hover{background:var(--green);color:#fff}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  min-height:28px;padding:2px 10px;border:1px solid var(--line);
  border-radius:4px;font-size:12px;color:var(--muted);background:rgba(255,255,255,.4);
}
.micro-badge{
  display:inline-flex;align-items:center;min-height:24px;padding:0 8px;
  border:1px solid #3A4C45;border-radius:3px;color:#D7DDD9;font-size:11px;
}
.site-header{position:relative;z-index:70}
.topbar{background:var(--ink);color:#D7DDD9;font-size:12px;line-height:1.4}
.topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-lock{color:#F3F0EA;font-weight:600;letter-spacing:.08em}
.topbar-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.topbar-meta a{color:#F3F0EA}
.topbar-meta a:hover{color:var(--copper-soft)}
.mainbar{
  background:var(--mist);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:65;
}
.site-header.is-compact .topbar{display:none}
.mainbar-inner{min-height:var(--header);display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:18px}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);min-height:44px}
.logo:hover{color:var(--green)}
.logo-mark{
  width:40px;height:40px;border:1px solid var(--green);border-radius:6px;
  display:grid;place-items:center;color:var(--green);background:#fff;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:800}
.logo-text span{font-size:12px;color:var(--muted);font-weight:500}
.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-list a{
  display:flex;align-items:center;min-height:44px;padding:0 10px;
  color:var(--text);font-size:14px;font-weight:600;border-bottom:2px solid transparent;
}
.nav-list a:hover,.nav-list a.is-active{color:var(--green);border-bottom-color:var(--copper)}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--text);
}
.nav-overlay{display:none;position:fixed;inset:0;background:rgba(21,35,30,.46);z-index:76}
.nav-overlay.is-on{display:block}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:var(--paper);
  z-index:80;transform:translateX(100%);transition:transform .28s ease;padding:24px 20px;
  border-left:1px solid var(--line);display:flex;flex-direction:column;gap:12px;
}
.drawer.is-open{transform:translateX(0)}
.drawer a,.drawer button.linkish{
  min-height:44px;display:flex;align-items:center;color:var(--text);font-weight:600;border-bottom:1px solid var(--mist);
}
.drawer-close{align-self:flex-end;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:5px}
main{display:block}
.section{padding:var(--space) 0;border-top:1px solid transparent}
.section-mist{background:var(--mist);border-top:1px solid #E4E0D8}
.section-paper{background:var(--paper);border-top:1px solid #EEEBE4}
.section-head{max-width:760px;margin-bottom:36px}
.section-head p{color:var(--muted);margin:14px 0 0;line-height:1.8}
.kicker{display:inline-block;color:var(--copper);font-size:12px;font-weight:700;letter-spacing:.16em;margin-bottom:10px}
.hero{position:relative;min-height:clamp(560px,86vh,760px);color:#F7F4EE;overflow:hidden;background:var(--ink)}
.hero-slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease}
.slide.is-active{opacity:1}
.slide img{width:100%;height:100%;object-fit:cover}
.slide-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,35,30,.86) 8%,rgba(27,94,74,.55) 48%,rgba(21,35,30,.42) 100%)}
.hero-grid{position:relative;z-index:2;min-height:clamp(560px,86vh,760px);display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;padding:84px 0 72px}
.hero-copy .brand-lock{display:inline-block;margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid var(--copper);letter-spacing:.18em;font-size:13px}
.hero-copy p{max-width:640px;color:#E6E2DA;margin:18px 0 26px;font-size:16px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.ems-panel{
  background:rgba(21,35,30,.82);border:1px solid #2C433A;border-radius:8px;padding:18px 18px 14px;
  box-shadow:var(--shadow);backdrop-filter:none;
}
.ems-panel header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:8px}
.ems-panel h2,.ems-panel .ems-title{font-size:13px;font-weight:700;letter-spacing:.12em;color:#F3F0EA}
.ems-live{font-family:var(--mono);font-size:12px;color:var(--copper-soft)}
.ems-rows{font-family:var(--mono);font-size:12.5px;line-height:1.7;color:#D5DBD6}
.ems-row{display:grid;grid-template-columns:64px 1fr auto;gap:8px;padding:6px 0;border-bottom:1px dashed #31463D}
.ems-row span:last-child{color:#F4E1C8}
.ems-foot{margin-top:10px;font-size:12px;color:#B9C4BE}
.hero-controls{position:absolute;left:0;right:0;bottom:22px;z-index:3}
.hero-controls .container{display:flex;align-items:center;justify-content:space-between;gap:12px}
.dots{display:flex;gap:8px}
.dots button,.ctrl-btn{
  width:44px;height:44px;border:1px solid rgba(255,255,255,.35);background:rgba(21,35,30,.35);color:#fff;border-radius:5px
}
.dots button{width:12px;height:12px;min-width:12px;border-radius:50%;padding:0}
.dots button.is-on{background:var(--copper);border-color:var(--copper)}
.ctrl-group{display:flex;gap:8px}
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.intro-photo{border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#ddd}
.intro-photo img{width:100%;aspect-ratio:4/3;object-fit:cover}
.param-list{display:grid;gap:0;border:1px solid var(--line);border-radius:9px;background:#fff;overflow:hidden}
.param-list div{display:grid;grid-template-columns:120px 1fr;gap:12px;padding:12px 16px;border-top:1px solid var(--line);line-height:1.65}
.param-list div:first-child{border-top:0}
.param-list dt{margin:0;color:var(--faint);font-size:13px;font-weight:600}
.param-list dd{margin:0;color:var(--text)}
.matrix{display:grid;grid-template-columns:280px 1fr;gap:22px;min-height:420px}
.matrix-index{list-style:none;margin:0;padding:0;border:1px solid var(--line);background:#fff;border-radius:9px;overflow:hidden}
.matrix-index button{
  width:100%;text-align:left;background:#fff;border:0;border-bottom:1px solid var(--mist);
  min-height:64px;padding:12px 16px;color:var(--text);font-weight:700;
}
.matrix-index button small{display:block;font-weight:400;color:var(--faint);font-size:12px}
.matrix-index button[aria-selected="true"]{background:var(--green);color:#fff;border-left:3px solid var(--copper)}
.matrix-index button[aria-selected="true"] small{color:#D7E6DF}
.matrix-panel{display:none;background:#fff;border:1px solid var(--line);border-radius:9px;padding:28px;min-height:420px}
.matrix-panel.is-on{display:block}
.matrix-panel .result{margin-top:18px;padding:12px 14px;background:var(--mist);border-left:3px solid var(--copper);color:var(--muted)}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.adv-card{
  background:#fff;border:1px solid var(--line);border-radius:9px;padding:22px 20px 20px;border-top:3px solid transparent;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.adv-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-top-color:var(--copper)}
.adv-card svg{width:28px;height:28px;stroke:var(--green);fill:none;stroke-width:1.6;margin-bottom:12px}
.adv-card p{color:var(--muted);margin:8px 0 0;font-size:14.5px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column}
.product-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.product-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.product-body ul{margin:6px 0 12px;padding-left:18px;color:var(--muted);line-height:1.7}
.product-body .btn{margin-top:auto;align-self:flex-start}
.stats{
  background:linear-gradient(#F7F4EE,#EFEBE3);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:42px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.stat{text-align:left;padding:8px 14px;border-left:1px solid var(--copper)}
.stat b{display:block;font-family:var(--mono);font-size:clamp(22px,2.4vw,32px);font-weight:800;color:var(--green);font-variant-numeric:tabular-nums}
.stat span{color:var(--muted);font-size:13px}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.timeline::before{
  content:"";position:absolute;left:8%;right:8%;top:18px;height:1px;background:var(--copper);
}
.step{padding:0 12px 0 0;position:relative}
.step i{
  width:12px;height:12px;border-radius:50%;background:var(--paper);border:2px solid var(--copper);
  display:block;margin-bottom:18px;position:relative;z-index:1;
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px;margin:0}
.step .deliver{display:inline-block;margin-top:10px;font-size:12px;color:var(--green);border:1px solid var(--line);padding:2px 8px;border-radius:4px;background:#fff}
.scene-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.scene-tabs button{
  min-height:44px;padding:0 16px;border:1px solid var(--line);background:#fff;border-radius:5px;color:var(--text);font-weight:600
}
.scene-tabs button[aria-selected="true"]{background:var(--green);color:#fff;border-color:var(--green)}
.scene-panel{display:none;grid-template-columns:1fr 1fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.scene-panel.is-on{display:grid}
.scene-panel img{width:100%;height:100%;min-height:280px;object-fit:cover}
.scene-copy{padding:28px}
.scene-copy p{color:var(--muted)}
.metric-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.metric-row span{font-size:12px;border:1px solid var(--line);padding:4px 8px;border-radius:4px;color:var(--muted)}
.darkband{background:var(--ink);color:#E8E4DC;padding:var(--space) 0;position:relative;overflow:hidden}
.darkband .container{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:40px}
.darkband h2{color:#F7F4EE;max-width:640px}
.darkband .quote-mark{color:var(--copper);font-size:28px;font-weight:800;letter-spacing:.2em;margin-bottom:12px}
.principle{list-style:none;margin:0;padding:0;border-top:1px solid #31463D}
.principle li{padding:16px 0;border-bottom:1px solid #31463D}
.principle strong{display:block;color:var(--copper-soft);margin-bottom:4px}
.story-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}
.story-main{display:grid;grid-template-columns:1.1fr .9fr;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.story-main img{width:100%;height:100%;object-fit:cover;min-height:280px}
.story-main blockquote{margin:0;padding:28px;font-size:17px;font-weight:600;line-height:1.7}
.story-main cite{display:block;margin-top:16px;font-style:normal;color:var(--faint);font-size:13px;font-weight:500}
.story-side{display:flex;flex-direction:column;gap:16px}
.story-mini{background:#fff;border:1px solid var(--line);border-radius:9px;padding:20px}
.story-mini p{color:var(--muted);margin:8px 0 0}
.case-wall{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.case{position:relative;min-height:220px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#1A1D1C;color:#fff}
.case img{width:100%;height:100%;object-fit:cover;min-height:220px;opacity:.78}
.case figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px 16px 18px;background:linear-gradient(transparent,rgba(21,35,30,.92))}
.case h3{color:#fff;font-size:18px;margin-bottom:6px}
.case p{margin:0;color:#D7DDD9;font-size:13.5px}
.case .btn{margin-top:10px}
.case-a{grid-column:span 8;min-height:340px}
.case-b{grid-column:span 4;min-height:340px}
.case-c,.case-d,.case-e{grid-column:span 4}
.case-e{background:#fff;color:var(--text);padding:22px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between}
.case-e h3{color:var(--text)}
.case-e p{color:var(--muted)}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.review{background:#fff;border:1px solid var(--line);border-radius:9px;padding:22px;box-shadow:none}
.review p{color:var(--muted);margin:0 0 14px}
.review .who{font-size:13px;color:var(--text);font-weight:700}
.review .who span{display:block;font-weight:400;color:var(--faint)}
.partner-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.partner{
  min-height:86px;border:1px dashed var(--line-strong);border-radius:8px;display:grid;place-items:center;
  color:var(--faint);background:#F7F6F2;filter:grayscale(1);font-weight:700;letter-spacing:.08em;text-align:center;padding:10px;
}
.news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
.news-feature{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px;border-left:4px solid var(--copper)}
.news-feature time,.news-item time{display:block;font-family:var(--mono);color:var(--copper);font-size:12px;margin-bottom:8px}
.news-list{display:flex;flex-direction:column;gap:12px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:9px;padding:16px 16px 16px 18px;display:grid;grid-template-columns:74px 1fr;gap:12px}
.news-item .datecol{border-right:1px solid var(--mist);color:var(--green);font-weight:800;line-height:1.2}
.news-item p{margin:6px 0 0;color:var(--muted);font-size:14px}
.news-more{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}
.news-extra{display:none;margin-top:12px}
.news-extra.is-open{display:flex;flex-direction:column;gap:12px}
.faq-grid{display:grid;grid-template-columns:0.8fr 1.2fr;gap:32px}
.acc{border:1px solid var(--line);background:#fff;border-radius:9px;overflow:hidden}
.acc-item + .acc-item{border-top:1px solid var(--line)}
.acc-btn{
  width:100%;text-align:left;background:#fff;border:0;min-height:56px;padding:14px 18px;font-weight:700;color:var(--text);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.acc-btn span.ico{color:var(--copper);font-family:var(--mono)}
.acc-panel{display:none;padding:0 18px 16px;color:var(--muted);line-height:1.8}
.acc-item.is-open .acc-panel{display:block}
.acc-item.is-open .acc-btn{background:#F7F6F2}
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.g-item{background:#fff;border:1px solid var(--line);border-radius:9px;padding:18px;display:flex;gap:12px;align-items:flex-start}
.g-item svg{width:28px;height:28px;stroke:var(--green);fill:none;stroke-width:1.6;flex:none}
.g-item p{margin:6px 0 0;color:var(--muted);font-size:14px}
.consult-box{display:grid;grid-template-columns:0.92fr 1.08fr;gap:28px;border:1px solid var(--copper-soft);background:#fff;border-radius:10px;padding:28px}
.promise{margin:16px 0 0;padding:0;list-style:none}
.promise li{padding:8px 0 8px 14px;border-left:2px solid var(--copper);margin-bottom:8px;color:var(--muted)}
.side-contact{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted)}
.side-contact a{display:block;color:var(--green);font-weight:700}
form{display:grid;gap:12px}
.field label{display:block;margin-bottom:6px;font-weight:600;font-size:14px}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;border:1px solid var(--line);border-radius:5px;padding:10px 12px;background:#fff;color:var(--text)
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(27,94,74,.12)}
.form-error{color:var(--danger);background:#FFF4EA;border:1px solid #E8B07A;padding:10px 12px;border-radius:5px}
.form-ok{color:var(--green-deep);background:#E7F5EF;border:1px solid var(--ok);padding:10px 12px;border-radius:5px}
.site-footer{background:var(--ink);color:#C9D2CD;padding:56px 0 24px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1.1fr 1fr;gap:24px}
.site-footer h3{color:#F3F0EA;font-size:15px;margin-bottom:12px}
.site-footer a{color:#C9D2CD}
.site-footer a:hover{color:var(--copper-soft)}
.foot-nav{display:flex;flex-direction:column;gap:8px}
.foot-brand p{line-height:1.8;color:#A8B3AE}
.legal{margin-top:28px;padding-top:16px;border-top:1px solid #2A3B35;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:#8B9691}
@media (max-width:1280px){
  .container{width:min(1120px,calc(100% - 40px))}
  .nav-list a{padding:0 8px;font-size:13.5px}
}
@media (max-width:1024px){
  :root{--space:88px}
  .mainbar-inner{grid-template-columns:auto 1fr auto}
  .nav-list{display:none}
  .menu-toggle{display:inline-grid;place-items:center}
  .hero-grid{grid-template-columns:1fr;padding:72px 0 96px}
  .ems-panel{max-width:560px}
  .intro-grid,.matrix,.faq-grid,.consult-box,.darkband .container,.story-grid,.news-layout{grid-template-columns:1fr}
  .matrix-panel{min-height:auto}
  .adv-grid,.product-grid,.stats-grid,.guarantee{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:1fr;gap:18px}
  .timeline::before{left:5px;top:8px;bottom:8px;right:auto;width:1px;height:auto}
  .scene-panel.is-on{grid-template-columns:1fr}
  .case-a,.case-b,.case-c,.case-d,.case-e{grid-column:span 6}
  .partner-wall{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--space:72px}
  .container{width:calc(100% - 32px)}
  .topbar-inner{flex-direction:column;align-items:flex-start;padding:8px 0}
  .hero{min-height:0}
  .hero-grid{min-height:0;padding:56px 0 92px}
  .stats-grid,.review-grid,.product-grid,.adv-grid{grid-template-columns:1fr}
  .guarantee{grid-template-columns:1fr 1fr}
  .case-a,.case-b,.case-c,.case-d,.case-e{grid-column:span 12}
  .story-main{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr}
  .param-list div{grid-template-columns:1fr}
}
@media (max-width:520px){
  :root{--space:56px}
  .container{width:calc(100% - 28px)}
  .hero-copy p{font-size:15px}
  .partner-wall{grid-template-columns:repeat(2,1fr)}
  .foot-grid,.guarantee{grid-template-columns:1fr}
  .legal{flex-direction:column}
  .mainbar-inner{gap:8px}
  .logo-text b{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition:none !important}
}