/* roulang page: index */
:root {
      --orange: #C2410C;
      --orange-deep: #9A3412;
      --orange-soft: #F4D6C4;
      --graphite: #3D4F56;
      --teal: #2F6F68;
      --teal-deep: #245853;
      --paper: #F3EEE6;
      --alu: #E8ECED;
      --white: #FFFFFF;
      --ink: #1A1714;
      --body: #3F3A36;
      --muted: #6B6460;
      --line: #D5CFC6;
      --dark: #161A1D;
      --dark-2: #1E2428;
      --sand: #E8E2D8;
      --radius: 6px;
      --radius-btn: 4px;
      --shadow: 0 6px 18px rgba(26, 23, 20, 0.07);
      --shadow-hover: 0 10px 22px rgba(26, 23, 20, 0.1);
      --space: 24px;
      --container: 1220px;
      --nav-h: 72px;
      --top-h: 40px;
      --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --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: var(--font);
      color: var(--body);
      background: var(--paper);
      font-size: 17px;
      line-height: 1.8;
      font-weight: 400;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--teal-deep); text-decoration: none; transition: color .2s ease, transform .2s ease; }
    a:hover { color: var(--orange); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { color: var(--ink); margin: 0 0 .55em; line-height: 1.28; font-weight: 700; }
    h1 { font-size: clamp(32px, 4.2vw, 52px); font-weight: 900; letter-spacing: .02em; }
    h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 900; }
    h3 { font-size: 18px; font-weight: 700; }
    p { margin: 0 0 .95em; }
    p:last-child { margin-bottom: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }
    .skip {
      position: absolute; left: 12px; top: -48px; z-index: 100;
      background: var(--orange); color: #fff; padding: 10px 14px; border-radius: var(--radius-btn);
    }
    .skip:focus { top: 10px; }
    .container { width: min(100% - 32px, var(--container)); margin: 0 auto; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--orange); font-size: 13px; font-weight: 700; letter-spacing: .12em;
      text-transform: none; margin-bottom: 10px;
    }
    .eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--orange); }
    .lead { color: var(--body); max-width: 760px; font-size: 17px; }
    .muted { color: var(--muted); }
    .section { padding: 84px 0; position: relative; }
    .section--paper { background: var(--paper); }
    .section--alu { background: var(--alu); }
    .section--white { background: var(--white); }
    .section--dark { background: var(--dark); color: var(--sand); padding: 92px 0; }
    .section--dark h2, .section--dark h3 { color: #F6F1E8; }
    .grid { display: grid; gap: 24px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 18px; border-radius: var(--radius-btn);
      font-weight: 700; line-height: 1; transition: background .2s ease, transform .15s ease, border-color .2s ease, color .2s ease;
    }
    .btn-primary { background: var(--orange); color: #fff; }
    .btn-primary:hover { background: var(--orange-deep); color: #fff; transform: translateX(1px); }
    .btn-primary:active { transform: translateX(0); }
    .btn-ghost { background: transparent; color: #F6F1E8; border: 1px solid rgba(232,226,216,.45); }
    .btn-ghost:hover { border-color: #fff; color: #fff; }
    .btn-line { background: transparent; color: var(--graphite); border: 1px solid var(--graphite); }
    .btn-line:hover { background: var(--graphite); color: #fff; }
    .btn[disabled], .btn.is-disabled { opacity: .45; pointer-events: none; }
    .badge {
      display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px;
      border: 1px solid var(--line); border-radius: 999px; font-size: 12px; color: var(--graphite); background: #fff;
    }
    .tag {
      display: inline-flex; align-items: center; min-height: 32px; padding: 0 12px;
      background: rgba(47,111,104,.1); color: var(--teal-deep); border-radius: 4px; font-size: 13px; font-weight: 500;
    }
    .site-header { position: relative; z-index: 50; }
    .topbar {
      background: #121517; color: #C9C2B8; font-size: 12px; min-height: var(--top-h);
      display: flex; align-items: center; transition: transform .25s ease, opacity .25s ease;
    }
    .topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; width: min(100% - 32px, var(--container)); margin: 0 auto; }
    .topbar a { color: #E8E2D8; }
    .topbar a:hover { color: #fff; }
    .top-meta, .trust-row { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; }
    .trust-row span { border: 1px solid rgba(232,226,216,.2); padding: 2px 8px; border-radius: 3px; color: #D8D1C6; }
    .mainbar {
      background: rgba(243,238,230,.96); border-bottom: 1px solid var(--line); min-height: var(--nav-h);
      position: sticky; top: 0; backdrop-filter: saturate(1.1);
    }
    .header-compact .topbar { transform: translateY(-100%); opacity: 0; pointer-events: none; position: absolute; width: 100%; }
    .nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: var(--nav-h); }
    .logo { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 900; font-size: 18px; min-height: 44px; }
    .logo svg { width: 34px; height: 34px; flex: 0 0 auto; }
    .logo:hover { color: var(--orange); }
    .nav-links { display: flex; align-items: center; gap: 4px 6px; }
    .nav-links a {
      position: relative; color: var(--ink); font-size: 14px; font-weight: 500;
      padding: 10px 8px; min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 8px; right: 8px; bottom: 8px; height: 2px;
      background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .2s ease;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--orange); }
    .nav-links a.is-active::after, .nav-links a:hover::after { transform: scaleX(1); }
    .nav-cta { flex: 0 0 auto; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 4px;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--ink); display: block; }
    .drawer-mask { position: fixed; inset: 0; background: rgba(22,26,29,.46); opacity: 0; pointer-events: none; transition: opacity .2s ease; z-index: 70; }
    .drawer {
      position: fixed; top: 0; right: 0; width: min(88vw, 360px); height: 100%; background: #fff;
      transform: translateX(100%); transition: transform .25s ease; z-index: 80; display: flex; flex-direction: column;
      box-shadow: -12px 0 30px rgba(0,0,0,.12);
    }
    body.menu-open { overflow: hidden; }
    body.menu-open .drawer-mask { opacity: 1; pointer-events: auto; }
    body.menu-open .drawer { transform: translateX(0); }
    .drawer-head { padding: 18px 20px; background: #121517; color: #E8E2D8; font-size: 13px; }
    .drawer-head p { margin: 0 0 6px; }
    .drawer-nav { padding: 12px 10px; display: flex; flex-direction: column; gap: 4px; overflow: auto; }
    .drawer-nav a { min-height: 48px; display: flex; align-items: center; padding: 0 14px; color: var(--ink); border-left: 3px solid transparent; font-weight: 500; }
    .drawer-nav a.is-active, .drawer-nav a:hover { border-left-color: var(--orange); color: var(--orange); background: #F7F2EA; }
    .drawer-foot { padding: 16px 20px 24px; }
    .hero { position: relative; min-height: 78vh; color: #F6F1E8; overflow: hidden; background: #161A1D; }
    .slides { position: absolute; inset: 0; }
    .slide { position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease; }
    .slide.is-on { opacity: 1; z-index: 1; }
    .slide img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.85) contrast(1.05); }
    .slide::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(16,18,20,.82) 8%, rgba(16,18,20,.46) 52%, rgba(16,18,20,.28) 100%),
                  linear-gradient(180deg, rgba(16,18,20,.18) 0%, rgba(16,18,20,.72) 100%);
    }
    .hero-copy { position: relative; z-index: 2; padding: 88px 0 72px; width: min(100% - 32px, var(--container)); margin: 0 auto; }
    .brand-mark { font-size: 14px; letter-spacing: .18em; font-weight: 700; color: #F4D6C4; margin-bottom: 14px; }
    .hero h1, .hero-kicker { margin-bottom: 14px; color: #F7F3EC; }
    .hero-kicker { font-size: clamp(32px, 4.2vw, 52px); font-weight: 900; line-height: 1.22; }
    .hero-desc { max-width: 680px; color: #E8E2D8; margin-bottom: 22px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
    .finder {
      max-width: 680px; background: rgba(22,26,29,.55); border: 1px solid rgba(232,226,216,.2);
      border-radius: 6px; padding: 12px; display: grid; grid-template-columns: 1fr auto; gap: 8px;
    }
    .finder input {
      min-height: 46px; border: 0; border-radius: 4px; padding: 0 14px; background: #F7F3EC; color: var(--ink);
    }
    .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
    .chips a, .chips button {
      min-height: 36px; padding: 0 12px; border: 1px solid rgba(232,226,216,.28); color: #E8E2D8;
      border-radius: 999px; background: rgba(255,255,255,.04); font-size: 13px;
    }
    .chips a:hover, .chips button:hover { border-color: var(--orange); color: #fff; }
    .hero-nav { position: absolute; inset: auto 16px 24px 16px; z-index: 3; display: flex; justify-content: space-between; align-items: center; }
    .arrows { display: flex; gap: 8px; }
    .arrows button, .dots button {
      width: 44px; height: 44px; border: 1px solid rgba(232,226,216,.35); color: #fff; border-radius: 4px; background: rgba(16,18,20,.35);
    }
    .arrows button:hover { background: var(--orange); border-color: var(--orange); }
    .dots { display: flex; gap: 6px; }
    .dots button { width: 28px; height: 4px; min-width: 28px; border: 0; border-radius: 0; background: rgba(232,226,216,.35); }
    .dots button.is-on { background: var(--orange); }
    .pain-list { display: grid; gap: 16px; }
    .pain-item {
      display: grid; grid-template-columns: 88px 1fr; gap: 18px; background: #fff; border: 1px solid var(--line);
      border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
    }
    .pain-no { font-family: var(--mono); font-size: 28px; font-weight: 700; color: var(--orange); line-height: 1; }
    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
    .split img { width: 100%; height: 430px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
    .spec-table { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; margin-top: 18px; }
    .spec-table div { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px; }
    .spec-table dt { font-size: 12px; color: var(--muted); }
    .spec-table dd { margin: 0; font-weight: 700; color: var(--ink); font-family: var(--mono); font-size: 15px; }
    .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; }
    .steps::before {
      content: ""; position: absolute; left: 8%; right: 8%; top: 28px; height: 1px; background: #C8D0D2;
    }
    .step {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 16px 18px; position: relative;
    }
    .step b {
      width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
      background: var(--teal); color: #fff; border-radius: 50%; font-size: 14px; margin-bottom: 12px; position: relative; z-index: 1;
    }
    .caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .cap {
      display: grid; grid-template-columns: 54px 1fr; gap: 14px; background: #fff; border: 1px solid var(--line);
      border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); min-height: 168px;
    }
    .cap:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .ico {
      width: 48px; height: 48px; border-radius: 4px; background: #EEF4F3; color: var(--teal); display: grid; place-items: center;
    }
    .cap .meta { margin-top: 10px; font-size: 13px; color: var(--teal-deep); border-top: 1px dashed var(--line); padding-top: 8px; }
    .products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .product { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; }
    .product img { width: 100%; height: 210px; object-fit: cover; }
    .product-body { padding: 18px 18px 8px; flex: 1; }
    .params { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); background: #F7F5F1; }
    .params div { padding: 10px 8px; text-align: center; font-size: 12px; color: var(--muted); border-right: 1px solid var(--line); }
    .params div:last-child { border-right: 0; }
    .params strong { display: block; color: var(--ink); font-family: var(--mono); font-size: 14px; }
    .product-foot { padding: 0 18px 18px; }
    .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .compare article { border: 1px solid rgba(232,226,216,.14); padding: 24px; background: var(--dark-2); }
    .kpi { font-family: var(--mono); font-size: 42px; color: #E2571B; font-weight: 700; line-height: 1.1; margin: 8px 0 12px; }
    .stories { display: grid; gap: 28px; }
    .story { display: grid; grid-template-columns: 280px 1fr; gap: 28px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
    .story:nth-child(even) { grid-template-columns: 1fr 280px; }
    .story:nth-child(even) img { order: 2; }
    .story img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
    .story div { padding: 24px 24px 24px 8px; }
    .story:nth-child(even) div { padding: 24px 8px 24px 24px; }
    .stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #2A3136; }
    .stat { background: var(--dark); padding: 36px 18px; text-align: center; }
    .stat strong { display: block; font-family: var(--mono); font-size: clamp(28px, 3vw, 40px); color: #E2571B; line-height: 1.1; }
    .stat span { color: #C9C2B8; font-size: 14px; }
    .quotes { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
    .quote { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
    .quote:first-child { grid-row: span 2; padding: 28px; }
    .quote p { font-size: 16px; }
    .who { font-size: 13px; color: var(--muted); margin-top: 12px; }
    .audience { display: grid; grid-template-columns: 220px 1fr; gap: 28px; }
    .audience-side { display: flex; flex-direction: column; gap: 10px; }
    .scene-box { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .scene-box article { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
    .topics { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px; }
    .topic { position: relative; min-height: 180px; overflow: hidden; border-radius: var(--radius); color: #F6F1E8; }
    .topic img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .topic::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(16,18,20,.15), rgba(16,18,20,.78)); }
    .topic > div { position: relative; z-index: 1; padding: 20px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; }
    .topic:first-child { grid-row: span 2; min-height: 380px; }
    .news { display: grid; gap: 12px; }
    .news-item {
      display: grid; grid-template-columns: 92px 1fr auto; gap: 16px; align-items: center;
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px;
    }
    .news-item time { font-family: var(--mono); color: var(--orange); font-size: 13px; }
    .board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .meter { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
    .meter strong { display: block; font-family: var(--mono); font-size: 22px; color: var(--ink); }
    .check { margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 18px; }
    .check li { padding-left: 22px; position: relative; color: var(--body); }
    .check li::before { content: ""; width: 10px; height: 10px; border: 2px solid var(--teal); position: absolute; left: 0; top: 8px; }
    .faq { display: grid; gap: 10px; }
    .faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; min-height: 56px; padding: 14px 18px; display: flex; justify-content: space-between;
      gap: 12px; font-weight: 700; color: var(--ink);
    }
    .faq-item button span { color: var(--orange); font-size: 22px; line-height: 1; }
    .faq-item .ans { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
    .faq-item .ans > p { padding: 0 18px 16px; color: var(--body); }
    .faq-item.is-open .ans { max-height: 240px; }
    .cta-box { display: grid; grid-template-columns: .9fr 1.1fr; gap: 32px; align-items: start; }
    form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
    input, select, textarea {
      width: 100%; min-height: 44px; border: 1px solid var(--line); border-radius: 4px; padding: 8px 12px;
      background: #FBF9F6; color: var(--ink);
    }
    textarea { min-height: 110px; resize: vertical; }
    .form-grid .full { grid-column: 1 / -1; }
    .form-msg { margin-top: 10px; font-size: 14px; min-height: 22px; }
    .form-msg.ok { color: var(--teal-deep); }
    .form-msg.err { color: var(--orange-deep); }
    .site-footer { background: #121517; color: #C9C2B8; padding: 56px 0 20px; }
    .foot-grid { display: grid; grid-template-columns: 1.3fr .9fr 1fr; gap: 28px; margin-bottom: 28px; }
    .site-footer h3 { color: #F6F1E8; font-size: 16px; }
    .site-footer a { color: #E8E2D8; display: inline-flex; min-height: 32px; align-items: center; }
    .copy { border-top: 1px solid rgba(232,226,216,.12); padding-top: 16px; font-size: 13px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    .texture::before {
      content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .035;
      background-image: linear-gradient(#000 1px, transparent 1px), linear-gradient(90deg, #000 1px, transparent 1px);
      background-size: 22px 22px;
    }
    @media (max-width: 1280px) {
      .hero-copy { padding-top: 72px; }
    }
    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .nav-cta { display: none; }
      .menu-toggle { display: inline-flex; }
      .split, .audience, .cta-box, .compare { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr 1fr; }
      .steps::before { display: none; }
      .caps { grid-template-columns: 1fr 1fr; }
      .products { grid-template-columns: 1fr 1fr; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story:nth-child(even) img { order: 0; }
      .stats { grid-template-columns: 1fr 1fr; }
      .quotes { grid-template-columns: 1fr; }
      .topics { grid-template-columns: 1fr 1fr; }
      .topic:first-child { grid-row: auto; min-height: 240px; }
      .board { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .split img { height: 320px; }
    }
    @media (max-width: 768px) {
      .hero { min-height: 62vh; }
      .finder { grid-template-columns: 1fr; }
      .pain-item { grid-template-columns: 1fr; }
      .caps, .products, .steps, .scene-box, .topics, .check, .spec-table, .form-grid { grid-template-columns: 1fr; }
      .news-item { grid-template-columns: 1fr; }
      .top-meta span:nth-child(2) { display: none; }
      .section { padding: 64px 0; }
    }
    @media (max-width: 520px) {
      body { font-size: 16px; }
      .container { width: min(100% - 20px, var(--container)); }
      .hero-copy { padding: 56px 0 86px; }
      .stats, .board, .foot-grid { grid-template-columns: 1fr; }
      .copy { flex-direction: column; }
      .arrows button { width: 48px; height: 48px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
    }

/* roulang page: index */
:root {
      --copper: #B85C38;
      --copper-dark: #9A4A2C;
      --copper-deep: #7C3B22;
      --graphite: #1E2328;
      --graphite-2: #2A3138;
      --paper: #F6F1E8;
      --card: #FFFAF6;
      --line: #E4D9C8;
      --film: #5E7A86;
      --ink: #1E2328;
      --muted: #5C5750;
      --white: #FFFFFF;
      --yellow: #E8C547;
      --danger: #A33B2B;
      --ok: #2F6B4F;
      --radius-card: 10px;
      --radius-btn: 5px;
      --shadow: 0 8px 24px rgba(30,35,40,.08);
      --shadow-hover: 0 10px 26px rgba(30,35,40,.12);
      --space: 24px;
      --space-lg: 32px;
      --container: 1240px;
      --nav-h: 72px;
      --topbar-h: 38px;
      --fs-body: 17px;
      --lh: 1.8;
      --z-nav: 80;
      --z-drawer: 90;
      --z-hero-ctrl: 5;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: var(--fs-body);
      line-height: var(--lh);
      color: var(--ink);
      background: var(--paper);
      overflow-x: hidden;
    }
    img { max-width: 100%; display: block; height: auto; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    h1, h2, h3, h4, p { margin: 0; }
    p + p { margin-top: 0.95em; }
    :focus-visible {
      outline: 2px solid var(--copper);
      outline-offset: 3px;
    }
    .skip {
      position: absolute; left: -999px; top: 8px;
    }
    .skip:focus { left: 12px; background: #fff; padding: 8px 12px; z-index: 100; }
    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }
    .num { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
    .site-header { position: relative; z-index: var(--z-nav); }
    .topbar {
      background: var(--graphite);
      color: #E8E2D8;
      min-height: var(--topbar-h);
      font-size: 13px;
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between;
      gap: 16px; min-height: var(--topbar-h);
    }
    .topbar a { color: #E8E2D8; }
    .topbar a:hover { color: #fff; }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .trust-mark {
      display: inline-flex; align-items: center; gap: 6px;
      border: 1px solid #3A424A; padding: 2px 8px; border-radius: 3px;
      color: #D9C7A8; letter-spacing: .04em;
    }
    .trust-mark i {
      width: 6px; height: 6px; border-radius: 1px; background: var(--yellow); display: inline-block;
    }
    .nav-main {
      background: var(--card);
      border-bottom: 1px solid var(--line);
      position: sticky; top: 0; z-index: var(--z-nav);
    }
    .nav-inner {
      display: flex; align-items: center; justify-content: space-between;
      min-height: var(--nav-h); gap: 18px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; flex-shrink: 0;
      min-height: 44px;
    }
    .logo-mark {
      width: 34px; height: 34px; background: var(--copper); color: #fff;
      display: grid; place-items: center; border-radius: 4px;
      font-weight: 700; font-size: 14px; letter-spacing: .08em;
    }
    .logo-text { font-weight: 700; font-size: 18px; color: var(--graphite); }
    .nav-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
    .nav-links a {
      padding: 8px 10px; font-size: 14px; color: var(--muted);
      border-radius: 4px; min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav-links a:hover { color: var(--copper); background: rgba(184,92,56,.06); }
    .nav-links a.active { color: var(--copper); font-weight: 600; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 0 18px; border-radius: var(--radius-btn);
      border: 1px solid transparent; font-weight: 600; font-size: 15px;
      transition: .2s transform, .2s background, .2s border-color, .2s color, .2s box-shadow;
    }
    .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn:active { transform: translateY(1px); box-shadow: none; }
    .btn-primary { background: var(--copper); color: #fff; }
    .btn-primary:hover { background: var(--copper-dark); }
    .btn-ghost { background: transparent; border-color: var(--graphite); color: var(--graphite); }
    .btn-ghost:hover { border-color: var(--copper); color: var(--copper); }
    .btn-light { background: #fff; color: var(--graphite); }
    .btn-film { background: transparent; border-color: var(--film); color: var(--film); }
    .btn[disabled] { opacity: .45; pointer-events: none; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line);
      background: #fff; border-radius: 4px; flex-direction: column; justify-content: center; align-items: center; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--graphite); display: block; }
    .drawer {
      position: fixed; inset: 0; background: rgba(30,35,40,.46);
      opacity: 0; pointer-events: none; transition: .25s opacity; z-index: var(--z-drawer);
    }
    .drawer.open { opacity: 1; pointer-events: auto; }
    .drawer-panel {
      position: absolute; right: 0; top: 0; bottom: 0; width: min(86vw, 360px);
      background: var(--card); padding: 24px 20px; transform: translateX(20px);
      transition: .25s transform; overflow: auto;
    }
    .drawer.open .drawer-panel { transform: none; }
    .drawer a { display: flex; min-height: 48px; align-items: center; border-bottom: 1px solid var(--line); }
    main { display: block; }
    .section { padding: 88px 0; }
    .section h2 {
      font-size: 32px; line-height: 1.3; font-weight: 700; margin-bottom: 16px;
    }
    .lead { color: var(--muted); max-width: 760px; margin-bottom: 28px; }
    .kicker {
      display: inline-block; font-size: 12px; letter-spacing: .16em;
      color: var(--copper); font-weight: 700; margin-bottom: 10px;
    }
    .hero {
      position: relative; min-height: calc(100vh - 110px);
      background: var(--graphite); color: #fff; overflow: hidden;
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; transform: translateX(18px);
      transition: opacity .36s ease, transform .36s ease;
    }
    .hero-slide.is-active { opacity: 1; transform: none; z-index: 1; }
    .hero-slide img, .hero-slide .hero-fallback {
      width: 100%; height: 100%; object-fit: cover; filter: saturate(.92) contrast(1.05);
    }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(30,35,40,.78) 0%, rgba(30,35,40,.42) 46%, rgba(30,35,40,.18) 100%);
    }
    .hero-copy {
      position: relative; z-index: 2; min-height: calc(100vh - 110px);
      display: flex; align-items: flex-end; padding: 72px 0 84px;
    }
    .hero-plate {
      max-width: 680px; border-left: 4px solid var(--copper); padding-left: 18px;
    }
    .brand-chip { font-size: 13px; letter-spacing: .18em; color: #E8C9B4; margin-bottom: 12px; }
    .hero h1 { font-size: 44px; line-height: 1.22; margin-bottom: 16px; }
    .hero-desc { font-size: 17px; line-height: 1.8; color: #EDE6DC; margin-bottom: 22px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
    .hero-search {
      background: rgba(255,250,246,.1); border: 1px solid rgba(228,217,200,.28);
      padding: 14px; border-radius: 8px; max-width: 560px;
    }
    .hero-search input {
      width: 100%; min-height: 44px; border: 1px solid rgba(228,217,200,.4);
      background: rgba(30,35,40,.35); color: #fff; border-radius: 4px; padding: 0 12px;
    }
    .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
    .chip {
      min-height: 36px; padding: 0 12px; border-radius: 4px; border: 1px solid rgba(228,217,200,.35);
      color: #F3E9DC; background: transparent; font-size: 13px;
    }
    .chip:hover { border-color: var(--copper); color: #fff; }
    .hero-controls {
      position: absolute; z-index: var(--z-hero-ctrl); left: 0; right: 0; bottom: 18px;
      display: flex; justify-content: space-between; align-items: center;
      width: min(100% - 40px, var(--container)); margin: 0 auto;
    }
    .dots { display: flex; gap: 8px; }
    .dots button {
      width: 22px; height: 8px; border: 0; background: rgba(255,255,255,.35); border-radius: 2px;
    }
    .dots button.is-on { background: var(--copper); }
    .hero-navbtns { display: flex; gap: 8px; }
    .icon-btn {
      width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.35); background: rgba(30,35,40,.35);
      color: #fff; border-radius: 4px;
    }
    .pain { background: var(--paper); }
    .pain-grid {
      display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: stretch;
    }
    .compare {
      display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: var(--card);
      border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden;
      box-shadow: var(--shadow);
    }
    .compare-col { padding: 22px; }
    .compare-col.bad { background: #F7EEE8; }
    .compare-col.good { background: #F4F7F4; }
    .compare h3 { font-size: 18px; margin-bottom: 12px; }
    .compare li { padding: 8px 0 8px 18px; position: relative; color: var(--muted); font-size: 15px; }
    .compare li::before { content: ""; position: absolute; left: 0; top: 16px; width: 8px; height: 8px; border-radius: 1px; }
    .bad li::before { background: var(--danger); }
    .good li::before { background: var(--ok); }
    .pain-thumbs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .pain-thumbs figure {
      margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden;
    }
    .pain-thumbs img { height: 140px; width: 100%; object-fit: cover; }
    .pain-thumbs figcaption { padding: 10px 12px; font-size: 13px; color: var(--muted); }
    .intro { background: #F3EBE0; }
    .intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center; }
    .intro-photo { position: relative; }
    .intro-photo img { width: 100%; height: 460px; object-fit: cover; border-radius: 10px; }
    .spec-plate {
      position: absolute; left: 16px; bottom: 16px; background: var(--graphite); color: #fff;
      padding: 14px 16px; border-radius: 6px; border-left: 3px solid var(--copper); max-width: 86%;
    }
    .spec-plate span { display: block; font-size: 12px; color: #C9B8A4; }
    .param-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 18px; }
    .param-row div { background: var(--card); border: 1px solid var(--line); padding: 12px; border-radius: 6px; }
    .param-row b { display: block; color: var(--copper); font-size: 18px; }
    .param-row span { font-size: 12px; color: var(--muted); }
    .process { background: var(--paper); }
    .timeline {
      display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; position: relative;
    }
    .timeline::before {
      content: ""; position: absolute; left: 0; right: 0; top: 28px; height: 2px; background: var(--line);
    }
    .step {
      background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px 16px 18px;
      position: relative; box-shadow: var(--shadow);
    }
    .step:hover { transform: translateY(-2px); border-color: var(--copper); }
    .step-index {
      width: 28px; height: 28px; border-radius: 4px; background: var(--copper); color: #fff;
      display: grid; place-items: center; font-size: 13px; font-weight: 700; margin-bottom: 12px;
    }
    .step h3 { font-size: 16px; margin-bottom: 8px; }
    .step p { font-size: 14px; color: var(--muted); }
    .advantages { background: #EFE6D8; }
    .adv-board {
      display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .adv-card {
      background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 22px;
      box-shadow: var(--shadow); min-height: 170px;
    }
    .adv-card.wide { grid-row: span 2; background: var(--graphite); color: #fff; }
    .adv-card.wide p { color: #D8D0C6; }
    .tag {
      display: inline-block; font-size: 12px; padding: 2px 8px; border: 1px solid currentColor;
      border-radius: 3px; margin-bottom: 10px; letter-spacing: .08em;
    }
    .adv-card h3 { font-size: 18px; margin-bottom: 8px; }
    .adv-card p { font-size: 14px; color: var(--muted); }
    .mini-params { display: flex; gap: 16px; margin-top: 16px; font-size: 13px; }
    .mini-params b { display: block; font-size: 20px; color: var(--copper); }
    .products { background: var(--paper); }
    .product-stage { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
    .product-main, .product-side article {
      background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
    }
    .product-side { display: grid; gap: 18px; }
    .product-main img { height: 340px; width: 100%; object-fit: cover; }
    .product-side img { height: 132px; width: 100%; object-fit: cover; }
    .product-body { padding: 18px; }
    .meter { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin: 12px 0 16px; font-size: 13px; color: var(--muted); }
    .meter b { display: block; color: var(--graphite); font-size: 15px; }
    .scenes { background: var(--graphite); color: #fff; padding: 36px 0; }
    .scene-track { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
    .scene-btn {
      min-height: 88px; border: 1px solid #3A424A; background: #262C32; color: #F3E9DC;
      border-radius: 8px; text-align: left; padding: 16px;
    }
    .scene-btn:hover, .scene-btn:focus-visible { border-color: var(--copper); }
    .scene-btn small { display: block; color: #A9B4BA; margin-top: 4px; }
    .cases {
      position: relative; color: #fff; padding: 96px 0; overflow: hidden;
    }
    .cases-bg {
      position: absolute; inset: 0; background: #15181c center/cover no-repeat;
      filter: brightness(.38) saturate(.8);
    }
    .cases-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; }
    .case-bars { display: grid; gap: 12px; }
    .bar {
      background: rgba(30,35,40,.72); border: 1px solid #3A424A; padding: 16px 18px; border-radius: 8px;
    }
    .bar-top { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 8px; }
    .bar-track { height: 8px; background: #2E353C; border-radius: 2px; overflow: hidden; }
    .bar-fill { height: 100%; background: var(--copper); }
    .idea { border-left: 3px solid var(--copper); padding-left: 16px; }
    .idea p { font-size: 20px; line-height: 1.7; }
    .stories { background: var(--paper); }
    .story-list { display: grid; gap: 22px; }
    .story {
      display: grid; grid-template-columns: 220px 1fr; gap: 22px; background: var(--card);
      border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
    }
    .story img { width: 100%; height: 100%; min-height: 180px; object-fit: cover; }
    .story-body { padding: 22px 22px 22px 0; }
    .story-body blockquote { font-size: 18px; line-height: 1.7; margin: 0 0 12px; }
    .role { font-size: 13px; color: var(--muted); }
    .results { background: #EFE6D8; padding: 48px 0; }
    .stat-row { display: grid; grid-template-columns: repeat(5,1fr); gap: 12px; }
    .stat {
      background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 18px; text-align: left;
    }
    .stat b { display: block; font-size: 34px; color: var(--copper); line-height: 1.1; }
    .stat span { font-size: 13px; color: var(--muted); }
    .reviews { background: var(--paper); }
    .review-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 16px; }
    .review {
      background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 22px;
      box-shadow: var(--shadow); border-left: 3px solid var(--copper);
    }
    .stars { color: var(--copper); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .review p { font-size: 15px; }
    .audience { background: #F3EBE0; }
    .aud-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .aud-block {
      background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 22px;
    }
    .aud-block h3 { font-size: 20px; margin-bottom: 8px; }
    .aud-block ul { margin-top: 10px; }
    .aud-block li { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 15px; color: var(--muted); }
    .news { background: var(--paper); }
    .news-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
    .news article {
      background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
    }
    .news img { height: 150px; width: 100%; object-fit: cover; }
    .news .pad { padding: 16px; }
    .news h3 { font-size: 16px; margin-bottom: 8px; }
    .news p { font-size: 14px; color: var(--muted); }
    .metrics { background: #EFE6D8; }
    .table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
    table { width: 100%; border-collapse: collapse; min-width: 720px; }
    th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
    th { background: var(--film); color: #fff; font-weight: 600; }
    tr:hover td { background: #FFF6EE; }
    .faq { background: var(--paper); }
    .acc { border-top: 1px solid var(--line); }
    .acc-item { border-bottom: 1px solid var(--line); background: var(--card); }
    .acc-btn {
      width: 100%; text-align: left; background: transparent; border: 0; min-height: 64px;
      display: flex; justify-content: space-between; align-items: center; padding: 14px 8px; font-size: 17px; font-weight: 600;
    }
    .acc-btn .plus { color: var(--copper); font-size: 22px; width: 32px; text-align: right; }
    .acc-panel { display: none; padding: 0 8px 18px; color: var(--muted); border-top: 2px solid var(--copper); }
    .acc-item.open .acc-panel { display: block; }
    .contact { background: var(--graphite); color: #fff; padding: 88px 0; }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 28px; }
    .contact a { color: #F3E9DC; }
    label { display: block; font-size: 13px; margin-bottom: 6px; color: #D5CBBF; }
    .field { margin-bottom: 14px; }
    input, select, textarea {
      width: 100%; border: 1px solid #4A525A; background: #F6F1E8; color: var(--graphite);
      border-radius: 4px; min-height: 44px; padding: 8px 10px;
    }
    textarea { min-height: 96px; resize: vertical; }
    input:focus, select:focus, textarea:focus {
      outline: 2px solid var(--copper); border-color: var(--copper);
    }
    .err { display: none; color: #E8A090; font-size: 12px; margin-top: 4px; }
    .field.has-error .err { display: block; }
    .form-box { background: #262C32; padding: 22px; border-radius: 10px; border: 1px solid #3A424A; }
    .ok-msg { display: none; background: #2F6B4F; color: #fff; padding: 10px 12px; border-radius: 4px; margin-bottom: 12px; }
    .site-footer { background: var(--graphite); color: #C9C2B6; padding: 48px 0 20px; border-top: 3px solid var(--copper); }
    .foot-grid { display: grid; grid-template-columns: 1.2fr .8fr .9fr .9fr; gap: 24px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 10px; }
    .site-footer a { color: #C9C2B6; display: inline-block; min-height: 32px; }
    .site-footer a:hover { color: #fff; }
    .copy { margin-top: 28px; padding-top: 16px; border-top: 1px solid #333A41; font-size: 13px; }
    @media (max-width: 1280px) {
      .hero h1 { font-size: 38px; }
    }
    @media (max-width: 1024px) {
      .section { padding: 72px 0; }
      .nav-links { display: none; }
      .menu-toggle { display: inline-flex; }
      .pain-grid, .intro-grid, .product-stage, .cases-inner, .contact-grid, .review-grid, .aud-grid {
        grid-template-columns: 1fr;
      }
      .adv-board { grid-template-columns: 1fr 1fr; }
      .adv-card.wide { grid-row: auto; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .stat-row { grid-template-columns: 1fr 1fr; }
      .scene-track { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .story { grid-template-columns: 180px 1fr; }
      .hero h1 { font-size: 34px; }
    }
    @media (max-width: 768px) {
      .section { padding: 56px 0; }
      .section h2 { font-size: 26px; }
      .topbar-right { display: none; }
      .compare { grid-template-columns: 1fr; }
      .param-row, .timeline, .adv-board, .news-grid, .stat-row, .scene-track, .foot-grid {
        grid-template-columns: 1fr;
      }
      .story { grid-template-columns: 1fr; }
      .story-body { padding: 16px; }
      .hero-copy { align-items: center; padding: 48px 0 96px; }
      .hero h1 { font-size: 28px; }
      .intro-photo img { height: 280px; }
      .product-main img { height: 220px; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, var(--container)); }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .pain-thumbs { grid-template-columns: 1fr; }
      .meter { grid-template-columns: 1fr; }
    }