/* roulang page: index */
:root {
      --ink: #1F3A43;
      --ink-deep: #162C33;
      --cinnabar: #B23A2F;
      --jade: #5E7A6A;
      --paper: #F4EFE6;
      --card: #fffbf7;
      --secondary: #E8E1D4;
      --dark: #171C1F;
      --ivory: #F3EDE3;
      --text: #243238;
      --muted: #5C6A70;
      --line: rgba(31, 58, 67, 0.14);
      --shadow: 0 8px 24px rgba(31, 58, 67, 0.08);
      --shadow-hover: 0 12px 28px rgba(31, 58, 67, 0.14);
      --radius: 8px;
      --radius-sm: 4px;
      --nav-top: 38px;
      --nav-main: 64px;
      --nav-h: 102px;
      --container: 1220px;
      --h1: 2.4rem;
      --h2: 1.7rem;
      --h3: 1.2rem;
      --body: 16.5px;
      --lh: 1.8;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      font-size: var(--body);
      line-height: var(--lh);
      color: var(--text);
      background: var(--paper);
      min-width: 320px;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--ink); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: var(--cinnabar); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 {
      font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
      color: var(--ink);
      line-height: 1.35;
      font-weight: 700;
      margin: 0 0 .6em;
    }
    h1 { font-size: var(--h1); }
    h2 { font-size: var(--h2); }
    h3 { font-size: var(--h3); }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; }
    :focus-visible { outline: 2px solid var(--jade); outline-offset: 3px; }
    .skip-link {
      position: absolute; left: -999px; top: 0; z-index: 10000;
      background: var(--ink); color: var(--ivory); padding: 8px 16px;
    }
    .skip-link:focus { left: 12px; top: 12px; }
    .container { width: min(100% - 48px, var(--container)); margin: 0 auto; }
    section { scroll-margin-top: calc(var(--nav-h) + 12px); }
    .section { padding: 88px 0; position: relative; }
    .section.alt { background: var(--secondary); }
    .section.card-bg { background: var(--card); }

    .sec-head { display: flex; gap: 20px; align-items: flex-start; margin-bottom: 28px; }
    .sec-index {
      font-variant-numeric: tabular-nums;
      font-family: "SFMono-Regular", "Menlo", "Consolas", monospace;
      color: var(--cinnabar);
      font-size: 13px;
      letter-spacing: .12em;
      padding-top: 8px;
      min-width: 36px;
      border-left: 3px solid var(--cinnabar);
      padding-left: 12px;
      line-height: 1.2;
    }
    .sec-kicker {
      margin: 0 0 6px;
      font-size: 13px;
      letter-spacing: .18em;
      color: var(--jade);
      text-transform: none;
    }
    .sec-head p.lead, .lead {
      max-width: 46em;
      color: var(--muted);
      margin-bottom: 0;
    }
    .sec-rule {
      height: 1px;
      background: linear-gradient(90deg, var(--cinnabar), transparent 70%);
      border: 0;
      margin: 0 0 36px;
      opacity: .45;
    }

    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      letter-spacing: .04em;
      transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
      border-bottom: 2px solid transparent;
    }
    .btn-primary {
      background: var(--ink); color: var(--ivory);
      border-bottom-color: #0e1c21;
    }
    .btn-primary:hover, .btn-primary:active {
      background: var(--cinnabar); color: #fff;
      border-bottom-color: #7c241c;
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }
    .btn-ghost {
      background: transparent; color: var(--ivory);
      border: 1px solid rgba(243, 237, 227, .45);
    }
    .btn-ghost:hover { background: rgba(243,237,227,.1); color: #fff; }
    .btn-line {
      background: transparent; color: var(--ink);
      border: 1px solid var(--ink);
    }
    .btn-line:hover {
      background: var(--ink); color: var(--ivory);
      transform: translateY(-2px);
    }
    .btn-block { width: 100%; }

    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      min-height: 24px; padding: 0 10px;
      font-size: 12px; letter-spacing: .08em;
      border-radius: 2px;
    }
    .badge-hot { background: var(--cinnabar); color: #fff; }
    .badge-ok { color: var(--jade); border: 1px solid var(--jade); background: transparent; }

    /* Header dual nav */
    .site-header {
      position: sticky; top: 0; z-index: 900;
      box-shadow: 0 1px 0 var(--line);
    }
    .nav-top {
      height: var(--nav-top);
      background: var(--ink-deep);
      color: rgba(243,237,227,.82);
      font-size: 12px;
    }
    .nav-top .container {
      height: 100%;
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
    }
    .nav-top a { color: rgba(243,237,227,.88); }
    .nav-top a:hover { color: #fff; }
    .nav-top-links { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
    .nav-top-right { display: flex; align-items: center; gap: 18px; }
    .nav-main {
      height: var(--nav-main);
      background: var(--ink);
    }
    .nav-main .container {
      height: 100%;
      display: flex; align-items: center; justify-content: space-between; gap: 20px;
    }
    .logo {
      font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
      color: var(--ivory) !important;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: .08em;
      display: flex; align-items: baseline; gap: 8px;
      white-space: nowrap;
    }
    .logo small {
      font-size: 12px; font-weight: 400; letter-spacing: .2em; color: rgba(243,237,227,.62);
      font-family: "Noto Sans SC", "PingFang SC", sans-serif;
    }
    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      color: rgba(243,237,227,.86);
      padding: 8px 12px;
      font-size: 14px;
      position: relative;
    }
    .nav-links a:hover { color: #fff; }
    .nav-links a.is-active,
    .nav-links a:hover {
      color: #fff;
    }
    .nav-links a.is-active::after,
    .nav-links a:hover::after {
      content: "";
      position: absolute; left: 12px; right: 12px; bottom: 4px;
      height: 2px; background: var(--cinnabar);
    }
    .nav-cta { flex-shrink: 0; }
    .nav-cta .btn { background: var(--cinnabar); border-bottom-color: #7c241c; color: #fff; min-height: 40px; }
    .nav-cta .btn:hover { background: #9a2f26; }
    .icon-btn {
      display: none; width: 44px; height: 44px; color: var(--ivory);
      align-items: center; justify-content: center;
    }
    .icon-btn span, .icon-btn span::before, .icon-btn span::after {
      display: block; width: 18px; height: 2px; background: currentColor; position: relative;
    }
    .icon-btn span::before, .icon-btn span::after {
      content: ""; position: absolute; left: 0;
    }
    .icon-btn span::before { top: -6px; }
    .icon-btn span::after { top: 6px; }
    .drawer-phone { display: none; color: var(--ivory); font-size: 14px; }

    .nav-drawer {
      display: none; position: fixed; inset: 0; z-index: 950;
      background: var(--ink);
      padding: 24px 24px 48px;
      overflow: auto;
    }
    .nav-drawer.is-open { display: block; }
    .drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
    .nav-drawer a {
      display: flex; align-items: center;
      min-height: 48px; font-size: 18px; color: var(--ivory);
      border-bottom: 1px solid rgba(243,237,227,.12);
    }
    .drawer-close { width: 44px; height: 44px; color: var(--ivory); font-size: 28px; }

    /* Hero crowdfunding */
    .hero { padding: 0; background: var(--dark); color: var(--ivory); position: relative; }
    .hero h1, .hero h2, .hero p { color: var(--ivory); }
    .carousel { position: relative; overflow: hidden; min-height: 640px; }
    .slides { display: flex; transition: transform .5s ease; will-change: transform; }
    .slide {
      min-width: 100%;
      position: relative;
      padding: 56px 0 84px;
    }
    .slide-bg {
      position: absolute; inset: 0;
      width: 100%; height: 100%; object-fit: cover;
      filter: saturate(.55) contrast(1.05);
    }
    .slide-mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(23,28,31,.88) 0%, rgba(23,28,31,.72) 48%, rgba(23,28,31,.42) 100%),
        repeating-linear-gradient(0deg, transparent, transparent 11px, rgba(243,237,227,.03) 12px);
    }
    .slide-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
    .hero-kicker { letter-spacing: .22em; font-size: 12px; color: #d8c4b0; margin-bottom: 10px; }
    .hero .lead { color: rgba(243,237,227,.86); max-width: 40em; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 8px; }
    .progress-panel {
      background: rgba(23,28,31,.55);
      border: 1px solid rgba(243,237,227,.16);
      border-radius: var(--radius);
      padding: 28px 24px;
      backdrop-filter: none;
    }
    .progress-wrap { display: flex; gap: 20px; align-items: center; }
    .ring { width: 132px; height: 132px; flex-shrink: 0; }
    .ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
    .ring-track { fill: none; stroke: rgba(243,237,227,.16); stroke-width: 8; }
    .ring-bar { fill: none; stroke: var(--cinnabar); stroke-width: 8; stroke-linecap: butt; stroke-dasharray: 339.3; stroke-dashoffset: 94; }
    .ring-center {
      position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
      transform: none;
    }
    .ring-box { position: relative; width: 132px; height: 132px; }
    .ring-num { font-family: "SFMono-Regular", Menlo, Consolas, monospace; font-size: 26px; color: var(--ivory); line-height: 1; }
    .ring-unit { font-size: 11px; letter-spacing: .16em; color: rgba(243,237,227,.7); margin-top: 6px; }
    .progress-copy h3 { color: var(--ivory); font-size: 1.05rem; margin-bottom: 6px; }
    .progress-copy p { color: rgba(243,237,227,.78); margin: 0 0 10px; font-size: 14px; }
    .seat-split { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: rgba(243,237,227,.7); }
    .seat-split b { color: var(--ivory); font-family: Menlo, Consolas, monospace; font-weight: 600; }
    .tier-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 18px; }
    .tier-mini {
      border: 1px solid rgba(243,237,227,.16);
      padding: 12px 12px 10px; border-radius: 6px;
      background: rgba(243,237,227,.04);
    }
    .tier-mini.is-hot { border-color: var(--cinnabar); }
    .tier-mini .name { font-size: 13px; margin: 0 0 4px; color: var(--ivory); font-family: "Noto Serif SC", "Songti SC", serif; }
    .tier-mini .price { font-family: Menlo, Consolas, monospace; color: #e8d3c4; font-size: 14px; }
    .tier-mini .hint { font-size: 12px; color: rgba(243,237,227,.6); margin: 4px 0 0; }
    .carousel-nav {
      position: absolute; z-index: 3; bottom: 22px; left: 0; right: 0;
      display: flex; justify-content: center; align-items: center; gap: 18px;
    }
    .carousel-dots { display: flex; gap: 8px; }
    .carousel-dots button {
      width: 28px; height: 4px; background: rgba(243,237,227,.28); border-radius: 0;
    }
    .carousel-dots button.is-on { background: var(--cinnabar); }
    .carousel-btn {
      width: 44px; height: 44px; border: 1px solid rgba(243,237,227,.28);
      color: var(--ivory); border-radius: 4px;
    }
    .carousel-btn:hover { background: rgba(243,237,227,.08); }

    /* Intro */
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
    .frame-16x10 { position: relative; overflow: hidden; border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 16/10; border: 1px solid var(--line); }
    .frame-16x10 img { width: 100%; height: 100%; object-fit: cover; }
    .cap-list { list-style: none; margin-top: 18px; }
    .cap-list li {
      display: grid; grid-template-columns: 28px 1fr; gap: 10px;
      padding: 12px 0; border-top: 1px solid var(--line);
      font-size: 15px;
    }
    .cap-list .mark {
      width: 22px; height: 22px; border: 1px solid var(--jade); color: var(--jade);
      display: grid; place-items: center; font-size: 12px; margin-top: 4px;
    }
    .verify {
      margin-top: 16px; padding: 14px 16px; background: var(--secondary);
      border-left: 3px solid var(--ink); font-size: 14px; color: var(--muted);
    }

    /* Features sticky */
    .feat-layout { display: grid; grid-template-columns: 220px 1fr; gap: 32px; align-items: start; }
    .feat-nav { position: sticky; top: calc(var(--nav-h) + 16px); display: flex; flex-direction: column; gap: 6px; }
    .feat-nav button {
      text-align: left; padding: 12px 14px; min-height: 44px;
      border-left: 3px solid transparent; color: var(--muted); background: transparent;
    }
    .feat-nav button.is-on {
      border-left-color: var(--cinnabar); color: var(--ink); background: var(--card);
      box-shadow: var(--shadow);
    }
    .feat-panel { display: none; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
    .feat-panel.is-on { display: block; }
    .feat-top { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 12px; }
    .ico {
      width: 42px; height: 42px; flex-shrink: 0;
      border: 1px solid var(--ink); color: var(--ink);
      display: grid; place-items: center;
    }
    .ico svg { width: 22px; height: 22px; stroke: var(--ink); fill: none; stroke-width: 1.6; }
    .feat-points { list-style: none; columns: 1; }
    .feat-points li {
      position: relative; padding: 8px 0 8px 18px;
      border-bottom: 1px dashed var(--line);
      font-size: 15px;
    }
    .feat-points li::before {
      content: ""; position: absolute; left: 0; top: 16px; width: 8px; height: 1px; background: var(--cinnabar);
    }

    /* Advantages 6 */
    .grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .adv-card {
      background: var(--card); border-radius: var(--radius); padding: 24px 22px 22px;
      box-shadow: var(--shadow); border-top: 2px solid var(--ink);
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .adv-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .adv-card:nth-child(2n) { border-top-color: var(--jade); }
    .adv-card:nth-child(3n) { border-top-color: var(--cinnabar); }
    .adv-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
    .adv-card p { margin: 0; color: var(--muted); font-size: 14.5px; }

    /* Scenes bento */
    .bento { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px; }
    .scene {
      position: relative; overflow: hidden; border-radius: var(--radius);
      min-height: 180px; color: var(--ivory); isolation: isolate;
    }
    .scene.big { grid-row: 1 / span 2; min-height: 420px; }
    .scene img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
    .scene .veil { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(23,28,31,.2), rgba(23,28,31,.82)); z-index: 1; }
    .scene .txt { position: relative; z-index: 2; padding: 22px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; }
    .scene h3 { color: var(--ivory); margin-bottom: 6px; }
    .scene p { color: rgba(243,237,227,.86); margin: 0; font-size: 14px; }
    .scene .io { margin-top: 8px; font-size: 13px; color: #d7c2ae; }

    /* Products 3 */
    .prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .prod-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
      overflow: hidden; box-shadow: var(--shadow);
      display: flex; flex-direction: column;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .prod-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .prod-card.is-hot { border-color: var(--cinnabar); }
    .prod-card .pic { aspect-ratio: 16/10; overflow: hidden; }
    .prod-card .pic img { width: 100%; height: 100%; object-fit: cover; }
    .prod-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .prod-body p { color: var(--muted); font-size: 14.5px; margin: 0; }
    .prod-body .btn { margin-top: auto; }

    /* Demo */
    .demo-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px; align-items: center; }
    .browser {
      background: #22282b; border-radius: 10px 10px 8px 8px; overflow: hidden;
      box-shadow: var(--shadow-hover); border: 1px solid #2c3438;
    }
    .browser-bar { height: 36px; background: #2a3236; display: flex; align-items: center; gap: 6px; padding: 0 12px; }
    .browser-bar i { width: 8px; height: 8px; border-radius: 50%; background: #5a6468; display: block; }
    .browser-bar .addr { margin-left: 10px; flex: 1; height: 18px; background: #1b2124; color: #8b969a; font-size: 11px; display: flex; align-items: center; padding: 0 8px; }
    .browser-stage { position: relative; aspect-ratio: 16/10; }
    .browser-stage img { width: 100%; height: 100%; object-fit: cover; opacity: .85; }
    .ui-overlay {
      position: absolute; left: 8%; right: 8%; top: 12%; bottom: 12%;
      border: 1px solid rgba(243,237,227,.35);
      background: linear-gradient(180deg, rgba(31,58,67,.35), rgba(23,28,31,.55));
      padding: 16px; color: var(--ivory);
    }
    .ui-row { height: 10px; background: rgba(243,237,227,.2); margin-bottom: 8px; width: 70%; }
    .ui-row.w { width: 46%; }
    .tag-risk { display: inline-block; background: var(--cinnabar); color: #fff; font-size: 11px; padding: 2px 8px; margin: 8px 6px 0 0; }
    .tag-ok { display: inline-block; background: var(--jade); color: #fff; font-size: 11px; padding: 2px 8px; margin: 8px 6px 0 0; }
    .steps { list-style: none; }
    .steps li { display: grid; grid-template-columns: 40px 1fr; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
    .steps .n {
      width: 32px; height: 32px; border: 1px solid var(--ink); display: grid; place-items: center;
      font-family: Menlo, Consolas, monospace; font-size: 12px;
    }
    .compare { margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .compare div { background: var(--card); border: 1px solid var(--line); padding: 12px; font-size: 13px; }
    .compare .before { color: var(--muted); }
    .compare .after { border-color: var(--jade); }

    /* Philosophy dark */
    .philosophy {
      background: var(--dark) url("/assets/images/985052fb96513247.jpg") center/cover no-repeat;
      color: var(--ivory); padding: 96px 0;
      position: relative;
    }
    .philosophy::before {
      content: ""; position: absolute; inset: 0;
      background: rgba(23,28,31,.86);
    }
    .philosophy .container { position: relative; z-index: 1; }
    .philosophy h2, .philosophy h3 { color: var(--ivory); }
    .phi-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: end; }
    .phi-quote {
      font-family: "Noto Serif SC", "Songti SC", serif;
      font-size: 1.85rem; line-height: 1.45; margin: 0 0 16px;
    }
    .case-slice {
      border: 1px solid rgba(243,237,227,.18); padding: 28px 26px;
      background: rgba(15,18,20,.5);
    }
    .case-slice dl { margin: 0; }
    .case-slice dt { font-size: 12px; letter-spacing: .16em; color: #c9b39a; margin-top: 12px; }
    .case-slice dt:first-child { margin-top: 0; }
    .case-slice dd { margin: 4px 0 0; color: var(--ivory); }

    /* Cases timeline */
    .timeline { position: relative; padding-left: 28px; }
    .timeline::before {
      content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 1px; background: var(--line);
    }
    .t-item { position: relative; padding: 0 0 32px 20px; }
    .t-item::before {
      content: ""; position: absolute; left: -25px; top: 8px; width: 9px; height: 9px;
      background: var(--cinnabar); border-radius: 0;
    }
    .t-item:nth-child(even) { margin-left: 8%; }
    .t-tag { font-size: 12px; letter-spacing: .12em; color: var(--cinnabar); margin: 0 0 6px; }
    .t-item h3 { font-size: 1.15rem; }
    .t-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 14px; color: var(--muted); }
    .t-meta b { color: var(--ink); font-family: Menlo, Consolas, monospace; font-weight: 600; }

    /* Stories */
    .story-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 18px; }
    .story-main, .story-side article {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
      box-shadow: var(--shadow);
    }
    .story-main { display: grid; grid-template-columns: 1.1fr .9fr; }
    .ratio43 { aspect-ratio: 4/3; overflow: hidden; }
    .ratio43 img, .story-main .pic img { width: 100%; height: 100%; object-fit: cover; }
    .story-main .pic { min-height: 100%; }
    .story-body { padding: 22px; }
    .story-body p { color: var(--muted); font-size: 14.5px; }
    .story-side { display: flex; flex-direction: column; gap: 18px; }

    /* Pricing */
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
    .price-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
      padding: 28px 24px; display: flex; flex-direction: column; gap: 8px;
    }
    .price-card.featured {
      border-color: var(--cinnabar); transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
    }
    .price-name { font-family: "Noto Serif SC", "Songti SC", serif; font-size: 1.2rem; color: var(--ink); }
    .price-num { font-family: Menlo, Consolas, monospace; font-size: 28px; color: var(--ink); margin: 6px 0; }
    .price-num small { font-size: 13px; color: var(--muted); }
    .price-card.featured .price-num { color: var(--cinnabar); }
    .checks { list-style: none; margin: 10px 0 16px; flex: 1; }
    .checks li { padding: 7px 0 7px 20px; position: relative; font-size: 14.5px; border-bottom: 1px dashed var(--line); }
    .checks li::before { content: "▣"; position: absolute; left: 0; color: var(--jade); font-size: 12px; top: 8px; }
    .fine { font-size: 12px; color: var(--muted); margin-top: 10px; }

    /* Stats */
    .stats { background: var(--secondary); padding: 48px 0; }
    .stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .stat {
      text-align: left; padding: 8px 12px 8px 18px;
      border-left: 2px solid var(--ink);
    }
    .stat b {
      display: block; font-family: Menlo, Consolas, monospace;
      font-size: 32px; color: var(--ink); line-height: 1.15;
    }
    .stat b em { font-style: normal; color: var(--jade); font-size: 14px; margin-left: 4px; }
    .stat span { color: var(--muted); font-size: 13px; letter-spacing: .08em; }

    /* Reviews masonry */
    .wall { columns: 3; column-gap: 16px; }
    .review {
      break-inside: avoid; margin-bottom: 16px;
      background: var(--card); border: 1px solid var(--line); padding: 18px 18px 16px;
      border-left: 3px solid var(--ink); border-radius: 0 8px 8px 0;
    }
    .review:nth-child(3n) { border-left-color: var(--cinnabar); }
    .review:nth-child(3n+2) { border-left-color: var(--jade); }
    .review p { margin: 0 0 10px; font-size: 14.5px; }
    .who { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
    .who b { color: var(--ink); font-weight: 600; }

    /* Testimonials */
    .quotes { position: relative; min-height: 220px; }
    .quote {
      display: none; padding: 8px 8px 8px 28px;
      border-left: 4px solid var(--cinnabar);
    }
    .quote.is-on { display: block; }
    .quote p {
      font-family: "Noto Serif SC", "Songti SC", serif;
      font-size: 1.35rem; line-height: 1.7; color: var(--ink);
    }
    .quote footer { color: var(--muted); font-size: 14px; }
    .q-nav { display: flex; gap: 8px; margin-top: 16px; }
    .q-nav button { width: 36px; height: 6px; background: var(--secondary); }
    .q-nav button.is-on { background: var(--cinnabar); }

    /* News */
    .news-grid { display: grid; grid-template-columns: 1.2fr 1fr; grid-template-rows: auto auto; gap: 16px; }
    .news-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
      padding: 22px; display: flex; flex-direction: column; gap: 8px;
    }
    .news-card.feature { grid-row: 1 / span 2; padding: 0; overflow: hidden; }
    .news-card.feature img { width: 100%; height: 220px; object-fit: cover; }
    .news-card.feature .pad { padding: 20px 22px 22px; }
    .news-date { font-size: 12px; color: var(--jade); font-family: Menlo, Consolas, monospace; }
    .news-card h3 { font-size: 1.05rem; }
    .news-card p { margin: 0; color: var(--muted); font-size: 14px; }

    /* FAQ */
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item button {
      width: 100%; text-align: left; min-height: 56px;
      display: flex; justify-content: space-between; align-items: center; gap: 16px;
      padding: 14px 4px; color: var(--ink); font-size: 16px;
      font-family: "Noto Serif SC", "Songti SC", serif;
    }
    .faq-item button span.plus { color: var(--cinnabar); font-size: 20px; width: 24px; text-align: center; }
    .faq-item .ans { display: none; padding: 0 8px 16px 0; color: var(--muted); background: #f7f1e8; }
    .faq-item.is-open .ans { display: block; padding: 4px 12px 18px 12px; }
    .faq-item.is-open button { color: var(--cinnabar); }

    /* Signup */
    .signup { background: var(--ink); color: var(--ivory); padding: 88px 0; }
    .signup h2, .signup h3 { color: var(--ivory); }
    .signup-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: start; }
    .trust li { list-style: none; padding: 10px 0 10px 16px; border-bottom: 1px solid rgba(243,237,227,.12); position: relative; }
    .trust li::before { content: ""; width: 6px; height: 6px; background: var(--cinnabar); position: absolute; left: 0; top: 18px; }
    .form-card { background: var(--card); color: var(--text); padding: 28px; border-radius: var(--radius); }
    .form-row { margin-bottom: 14px; }
    label { display: block; font-size: 13px; margin-bottom: 6px; color: var(--ink); }
    .req { color: var(--cinnabar); }
    input, select, textarea {
      width: 100%; min-height: 44px; border: 1px solid var(--line); background: #fff;
      padding: 8px 12px; border-radius: var(--radius-sm); color: var(--text);
    }
    input:focus, select:focus, textarea:focus { border-color: var(--ink); outline: none; }
    .err { color: var(--cinnabar); font-size: 12px; display: none; margin-top: 4px; }
    .form-row.has-error input, .form-row.has-error select { border-color: var(--cinnabar); }
    .form-row.has-error .err { display: block; }
    .ok-msg { display: none; padding: 20px; background: rgba(94,122,106,.12); color: var(--jade); border: 1px solid var(--jade); }
    .ok-msg.is-on { display: block; }
    .privacy { font-size: 12px; color: var(--muted); margin: 8px 0 14px; }
    .legal-note { font-size: 12px; color: rgba(243,237,227,.7); margin-top: 16px; }

    /* Footer */
    .site-footer { background: #22353c; color: rgba(243,237,227,.78); padding: 56px 0 24px; font-size: 14px; }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.1fr 1.1fr; gap: 28px; margin-bottom: 36px; }
    .site-footer h3 { color: var(--ivory); font-size: 15px; letter-spacing: .12em; margin-bottom: 14px; }
    .site-footer a { color: rgba(243,237,227,.78); }
    .site-footer a:hover { color: #fff; }
    .foot-links { list-style: none; }
    .foot-links li { margin-bottom: 8px; }
    .foot-brand .name {
      font-family: "Noto Serif SC", "Songti SC", serif; color: var(--ivory);
      font-size: 18px; margin-bottom: 10px;
    }
    .copy { border-top: 1px solid rgba(243,237,227,.12); padding-top: 16px; font-size: 12px; color: rgba(243,237,227,.55); display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between; }

    @media (max-width: 1280px) {
      :root { --h1: 2.15rem; --h2: 1.55rem; }
    }
    @media (max-width: 1024px) {
      .container { width: min(100% - 40px, var(--container)); }
      .slide-inner, .intro-grid, .feat-layout, .demo-grid, .phi-grid, .story-grid, .signup-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .nav-links { display: none; }
      .icon-btn, .drawer-phone { display: inline-flex; }
      .nav-cta { display: none; }
      .bento { grid-template-columns: 1fr 1fr; }
      .scene.big { grid-row: auto; min-height: 280px; }
      .prod-grid, .price-grid, .grid-6 { grid-template-columns: 1fr 1fr; }
      .price-card.featured { transform: none; }
      .stat-row { grid-template-columns: 1fr 1fr; gap: 18px; }
      .wall { columns: 2; }
      .story-main { grid-template-columns: 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .carousel { min-height: 0; }
      .tier-preview { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      :root { --nav-h: 64px; --h1: 1.7rem; --h2: 1.38rem; --body: 16px; }
      .nav-top { display: none; }
      .section { padding: 64px 0; }
      .container { width: min(100% - 32px, var(--container)); }
      .grid-6, .prod-grid, .price-grid, .bento, .stat-row, .foot-grid, .news-grid { grid-template-columns: 1fr; }
      .wall { columns: 1; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .progress-wrap { flex-direction: column; align-items: flex-start; }
      .feat-nav { position: static; flex-direction: row; overflow: auto; gap: 8px; }
      .feat-nav button { border-left: 0; border-bottom: 2px solid transparent; white-space: nowrap; background: var(--secondary); padding: 10px 14px; }
      .feat-nav button.is-on { border-bottom-color: var(--cinnabar); }
      .t-item:nth-child(even) { margin-left: 0; }
      .compare { grid-template-columns: 1fr; }
      .slide { padding: 36px 0 76px; }
    }
    @media (max-width: 520px) {
      .sec-head { flex-direction: column; gap: 8px; }
      .ring-box, .ring { width: 112px; height: 112px; }
      .quote p { font-size: 1.12rem; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      .slides, .btn, .prod-card, .adv-card { transition: none !important; }
    }

/* roulang page: index */
:root {
      --ink: #1E3F3A;
      --ink-deep: #142422;
      --seal: #A63D3D;
      --seal-dark: #8A3232;
      --paper: #F4EFE6;
      --paper-2: #E7E1D6;
      --text: #1C1917;
      --muted: #5C574E;
      --line: #D4CBB8;
      --copper: #8A6A32;
      --ivory: #FBF7F0;
      --white: #FFFDF8;
      --radius: 6px;
      --radius-sm: 4px;
      --shadow: 0 1px 3px rgba(28, 25, 23, 0.08);
      --shadow-hover: 0 6px 16px rgba(28, 25, 23, 0.1);
      --header-h: 102px;
      --container: 1240px;
      --gap: 28px;
      --font-serif: "Noto Serif SC", "Songti SC", serif;
      --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.85;
      color: var(--text);
      background: var(--paper);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--ink); text-decoration: none; transition: color .2s ease, border-color .2s ease, background .2s ease; }
    a:hover { color: var(--seal); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 700; line-height: 1.35; color: var(--text); margin: 0; }
    p { margin: 0 0 1em; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--seal); outline-offset: 2px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .skip {
      position: absolute; left: -999px; top: 0;
    }
    .skip:focus { left: 16px; top: 16px; z-index: 2000; background: var(--white); padding: 8px 12px; }

    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 0 22px;
      border-radius: var(--radius-sm);
      font-weight: 600; letter-spacing: .04em;
      transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }
    .btn-primary {
      background: var(--seal); color: #fff;
      box-shadow: 0 0 0 2px rgba(166, 61, 61, 0.18);
    }
    .btn-primary:hover, .btn-primary:active { background: var(--seal-dark); color: #fff; }
    .btn-ghost {
      background: transparent; color: var(--ivory);
      border: 1px solid rgba(251, 247, 240, 0.7);
    }
    .btn-ghost:hover { background: rgba(251, 247, 240, 0.12); color: #fff; }
    .btn-ink {
      background: transparent; color: var(--ink);
      border: 1px solid var(--ink);
    }
    .btn-ink:hover { background: var(--ink); color: var(--ivory); }
    .btn-copper {
      background: var(--copper); color: #fff;
    }
    .btn-copper:hover { background: #6f5426; color: #fff; }
    .btn-block { width: 100%; }

    .site-header {
      position: sticky; top: 0; z-index: 1000;
      background: var(--ivory);
      border-bottom: 1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .topbar {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 36px;
      background: var(--paper-2);
      color: var(--muted);
      font-size: 13px;
      border-bottom: 1px solid var(--line);
    }
    .topbar .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .topbar a { color: var(--muted); }
    .topbar a:hover { color: var(--ink); }
    .trust-chip {
      display: inline-flex; align-items: center; gap: 6px;
      color: var(--ink); font-weight: 500;
    }
    .trust-chip::before {
      content: ""; width: 6px; height: 6px; border-radius: 50%;
      background: var(--seal);
    }
    .mainbar { background: var(--ivory); }
    .mainbar .container {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 66px; gap: 20px;
    }
    .logo {
      font-family: var(--font-serif);
      font-size: 20px; font-weight: 700; color: var(--ink);
      white-space: nowrap; letter-spacing: .06em;
    }
    .logo:hover { color: var(--ink); }
    .logo span { color: var(--seal); margin-right: 2px; }
    .nav-desktop { display: flex; align-items: center; gap: 4px; }
    .nav-desktop a {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 0 12px;
      color: var(--text); font-size: 15px; font-weight: 500;
      border-bottom: 2px solid transparent;
    }
    .nav-desktop a:hover { color: var(--ink); border-bottom-color: var(--line); }
    .nav-desktop a.is-active { color: var(--ink); border-bottom-color: var(--seal); }
    .header-cta { flex-shrink: 0; }
    .nav-toggle {
      display: none; width: 44px; height: 44px;
      border: 1px solid var(--line); border-radius: var(--radius-sm);
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .nav-toggle span {
      display: block; width: 18px; height: 2px; background: var(--ink);
      transition: transform .2s ease, opacity .2s ease;
    }
    .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
    .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .drawer {
      position: fixed; inset: 0; z-index: 1100;
      background: var(--ivory);
      transform: translateX(100%);
      transition: transform .28s ease;
      overflow: auto;
      display: flex; flex-direction: column;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer-top {
      padding: 20px 24px 16px;
      border-bottom: 1px solid var(--line);
      background: var(--paper-2);
      font-size: 14px; color: var(--muted);
    }
    .drawer-top p { margin: 0 0 6px; }
    .drawer-close {
      position: absolute; top: 12px; right: 12px;
      width: 44px; height: 44px; border: 1px solid var(--line); border-radius: var(--radius-sm);
    }
    .drawer-nav { display: flex; flex-direction: column; padding: 12px 16px 32px; }
    .drawer-nav a {
      display: flex; align-items: center;
      min-height: 48px; padding: 0 12px;
      border-bottom: 1px solid var(--line);
      color: var(--text); font-size: 17px; font-family: var(--font-serif);
    }
    .drawer-nav a.is-active { color: var(--seal); }
    .drawer-cta { margin: 20px 16px 0; }

    .hero {
      position: relative; min-height: calc(100vh - var(--header-h));
      color: var(--ivory); overflow: hidden;
      background: var(--ink-deep);
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0;
      transition: opacity .7s ease;
    }
    .hero-slide.is-active { opacity: 1; z-index: 1; }
    .hero-slide img {
      width: 100%; height: 100%; object-fit: cover;
    }
    .hero-mask {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(20, 36, 34, 0.82) 0%, rgba(30, 63, 58, 0.58) 55%, rgba(20, 36, 34, 0.45) 100%);
    }
    .hero-inner {
      position: relative; z-index: 2;
      display: grid; grid-template-columns: 1.15fr 0.85fr;
      gap: 36px; align-items: center;
      min-height: calc(100vh - var(--header-h));
      padding: 48px 0 72px;
    }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 13px; letter-spacing: .18em;
      color: #E8D9B8; margin-bottom: 16px;
    }
    .eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--seal); }
    .hero h1 {
      font-size: clamp(32px, 4vw, 46px);
      color: #FFFDF8; margin-bottom: 18px; max-width: 16em;
    }
    .hero-lead {
      font-size: 16px; line-height: 1.9; color: #EDE6D8;
      max-width: 38em; margin-bottom: 28px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 8px; }
    .hero-board {
      background: rgba(20, 36, 34, 0.72);
      border: 1px solid rgba(212, 203, 184, 0.28);
      border-radius: 8px; padding: 22px;
      backdrop-filter: blur(2px);
    }
    .board-top {
      display: grid; grid-template-columns: 120px 1fr;
      gap: 18px; align-items: center;
      margin-bottom: 18px;
    }
    .ring-wrap { position: relative; width: 112px; height: 112px; }
    .ring-wrap svg { transform: rotate(-90deg); width: 112px; height: 112px; }
    .ring-center {
      position: absolute; inset: 0;
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      font-family: var(--font-mono); color: #fff;
    }
    .ring-center strong { font-size: 22px; font-weight: 700; }
    .ring-center span { font-size: 11px; color: #D4CBB8; }
    .board-copy h3 { color: #FFFDF8; font-size: 20px; margin-bottom: 6px; }
    .board-copy p { color: #D8D0C2; font-size: 13px; line-height: 1.7; margin: 0; }
    .tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .tier {
      border: 1px solid rgba(212, 203, 184, 0.28);
      border-radius: var(--radius-sm); padding: 10px 8px; text-align: center;
      background: rgba(251, 247, 240, 0.04);
    }
    .tier b { display: block; font-size: 13px; color: #FFFDF8; margin-bottom: 2px; }
    .tier em { font-style: normal; color: var(--copper); font-family: var(--font-mono); font-size: 12px; }
    .tier span { display: block; font-size: 12px; color: #C9C0B0; }
    .hero-controls {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 22px;
      display: flex; align-items: center; justify-content: space-between;
      width: min(100% - 40px, var(--container)); margin: 0 auto;
    }
    .hero-arrows { display: flex; gap: 8px; }
    .hero-arrows button {
      width: 44px; height: 44px; border: 1px solid rgba(251, 247, 240, 0.55);
      color: #fff; border-radius: var(--radius-sm);
    }
    .hero-arrows button:hover { background: rgba(251, 247, 240, 0.12); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px; height: 4px; background: rgba(251, 247, 240, 0.35); border-radius: 1px;
    }
    .hero-dots button.is-active { background: #FBF7F0; }

    main { overflow: hidden; }
    .section { padding: 88px 0; }
    .section-tight { padding: 64px 0; }
    .section-head { margin-bottom: 36px; max-width: 46em; }
    .section-head.center { margin-left: auto; margin-right: auto; text-align: left; }
    .kicker {
      display: inline-block; font-size: 13px; color: var(--seal);
      letter-spacing: .12em; margin-bottom: 10px; font-weight: 600;
    }
    h2 {
      font-size: clamp(26px, 3vw, 32px);
      margin: 0 0 14px;
      padding-left: 14px;
      border-left: 3px solid var(--seal);
    }
    .section-desc { color: var(--muted); font-size: 16px; line-height: 1.9; margin: 0; }
    .paper-alt { background: var(--paper-2); }
    .ivory { background: var(--ivory); }

    .case-dark {
      background: var(--ink-deep) url("/assets/images/c8ef015ac4f8e9f3.jpg") center/cover no-repeat;
      color: #EDE6D8; position: relative;
    }
    .case-dark::before {
      content: ""; position: absolute; inset: 0;
      background: rgba(20, 36, 34, 0.88);
    }
    .case-dark .container { position: relative; z-index: 1; }
    .case-dark h2 { color: #FFFDF8; }
    .case-dark .section-desc { color: #C9C0B0; }
    .case-stack { display: grid; gap: 0; border-top: 1px solid rgba(212, 203, 184, 0.25); }
    .case-item {
      display: grid; grid-template-columns: 160px 1fr;
      gap: 28px; padding: 28px 0;
      border-bottom: 1px solid rgba(212, 203, 184, 0.25);
    }
    .case-meta { color: #C4A35A; font-size: 13px; letter-spacing: .08em; }
    .case-item h3 { color: #FFFDF8; font-size: 20px; margin-bottom: 8px; }
    .case-item p { margin: 0; color: #D8D0C2; }

    .stats {
      background: var(--ink); color: #F4EFE6; padding: 36px 0;
    }
    .stats-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
    }
    .stat {
      padding: 12px 22px;
      border-right: 1px solid rgba(212, 203, 184, 0.22);
    }
    .stat:last-child { border-right: 0; }
    .stat b {
      display: block; font-family: var(--font-mono);
      font-size: 28px; color: #FFFDF8; line-height: 1.2; margin-bottom: 6px;
    }
    .stat span { display: block; font-size: 13px; color: #C9C0B0; line-height: 1.6; }

    .compare-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
    }
    .compare-col {
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 28px 26px;
      box-shadow: var(--shadow);
    }
    .compare-col.before { background: var(--paper-2); }
    .compare-col h3 { font-size: 22px; margin-bottom: 12px; }
    .compare-col li {
      position: relative; padding-left: 16px; margin: 0 0 10px;
      color: var(--muted); font-size: 15px;
    }
    .compare-col li::before {
      content: ""; position: absolute; left: 0; top: 0.7em;
      width: 6px; height: 1px; background: var(--seal);
    }
    .tag {
      display: inline-block; font-size: 12px; letter-spacing: .08em;
      padding: 2px 8px; border: 1px solid var(--line); border-radius: 2px;
      color: var(--muted); margin-bottom: 10px;
    }

    .split {
      display: grid; grid-template-columns: 7fr 5fr; gap: 40px; align-items: center;
    }
    .split.reverse { grid-template-columns: 5fr 7fr; }
    .split-text p { color: var(--muted); }
    .rule-box {
      margin-top: 18px; padding: 16px 18px;
      background: var(--paper-2); border-left: 3px solid var(--ink);
      font-size: 14px; color: var(--text); line-height: 1.85;
    }
    .media-frame {
      border: 1px solid var(--line); border-radius: var(--radius);
      overflow: hidden; box-shadow: var(--shadow);
      background: var(--paper-2);
    }
    .media-frame img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }

    .feat-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap);
    }
    .feat-card {
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); overflow: hidden;
      box-shadow: var(--shadow); transition: transform .2s ease, border-color .2s ease;
    }
    .feat-card:hover { transform: translateY(-3px); border-color: var(--ink); }
    .feat-card img { width: 100%; height: 148px; object-fit: cover; }
    .feat-body { padding: 18px 18px 20px; }
    .feat-icon {
      width: 36px; height: 36px; margin-bottom: 10px; color: var(--ink);
    }
    .feat-card h3 { font-size: 20px; margin-bottom: 8px; }
    .feat-card p { font-size: 14px; color: var(--muted); margin: 0 0 12px; line-height: 1.75; }
    .feat-link { font-size: 13px; color: var(--seal); font-weight: 600; }
    .feat-link:hover { color: var(--seal-dark); }

    .scene-list { display: grid; gap: 20px; }
    .scene-row {
      display: grid; grid-template-columns: 5fr 7fr; gap: 0;
      border: 1px solid var(--line); background: var(--ivory);
      border-radius: var(--radius); overflow: hidden;
      min-height: 220px;
    }
    .scene-row:nth-child(even) { grid-template-columns: 7fr 5fr; }
    .scene-row:nth-child(even) .scene-media { order: 2; }
    .scene-media img { width: 100%; height: 100%; object-fit: cover; min-height: 220px; }
    .scene-copy { padding: 28px 32px; display: flex; flex-direction: column; justify-content: center; }
    .scene-copy h3 { font-size: 22px; margin-bottom: 10px; }
    .scene-copy p { color: var(--muted); margin: 0; }

    .demo {
      background: var(--ink-deep);
      color: #EDE6D8;
    }
    .demo h2 { color: #FFFDF8; }
    .demo .section-desc { color: #C9C0B0; }
    .demo-stage {
      display: grid; grid-template-columns: 280px 1fr; gap: 28px; align-items: stretch;
    }
    .steps { display: flex; flex-direction: column; gap: 8px; }
    .step {
      text-align: left; padding: 16px 16px;
      border: 1px solid rgba(212, 203, 184, 0.25);
      border-radius: var(--radius-sm); color: #EDE6D8;
      min-height: 72px;
    }
    .step.is-on { background: rgba(166, 61, 61, 0.18); border-color: var(--seal); }
    .step b { display: block; font-family: var(--font-mono); font-size: 12px; color: #C4A35A; margin-bottom: 4px; }
    .step span { font-size: 15px; }
    .demo-screen {
      border: 1px solid rgba(212, 203, 184, 0.3);
      min-height: 360px; overflow: hidden; position: relative; border-radius: var(--radius);
    }
    .demo-screen img {
      width: 100%; height: 100%; object-fit: cover; min-height: 360px;
      position: absolute; inset: 0; opacity: 0; transition: opacity .35s ease;
    }
    .demo-screen img.is-on { opacity: 1; }
    .demo-caption {
      margin-top: 16px; font-size: 14px; color: #C9C0B0;
    }

    .pack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
    .pack {
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); overflow: hidden;
      display: flex; flex-direction: column;
      transition: transform .2s ease, border-color .2s ease;
    }
    .pack:hover { transform: translateY(-3px); border-color: var(--ink); }
    .pack img { height: 180px; width: 100%; object-fit: cover; }
    .pack-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
    .pack h3 { font-size: 22px; margin-bottom: 8px; }
    .io { font-size: 13px; color: var(--copper); margin-bottom: 10px; font-weight: 600; }
    .pack p { color: var(--muted); font-size: 14px; flex: 1; }

    .stories {
      display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px;
    }
    .story {
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 26px;
      box-shadow: var(--shadow);
    }
    .story.big { padding: 34px; }
    .story .role { font-size: 13px; color: var(--seal); letter-spacing: .08em; margin-bottom: 8px; }
    .story h3 { font-size: 22px; margin-bottom: 10px; }
    .story p { color: var(--muted); margin: 0; }
    .story-side { display: grid; gap: 20px; }

    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
    .price-card {
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 28px 24px 24px;
      display: flex; flex-direction: column;
    }
    .price-card.hot {
      border-color: var(--copper);
      box-shadow: 0 0 0 1px var(--copper);
    }
    .price-card h3 { font-size: 22px; margin-bottom: 6px; }
    .price-num {
      font-family: var(--font-mono); color: var(--copper);
      font-size: 32px; line-height: 1.2; margin: 8px 0 4px;
    }
    .price-num small { font-size: 14px; color: var(--muted); }
    .price-note { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
    .price-card ul { margin: 0 0 22px; flex: 1; }
    .price-card li {
      font-size: 14px; padding: 8px 0;
      border-bottom: 1px dashed var(--line); color: var(--text);
    }
    .price-card li.off { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--line); }
    .public-note { margin-top: 22px; font-size: 14px; color: var(--muted); }

    .review-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    }
    .review {
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 18px 16px 16px;
    }
    .stars { color: var(--copper); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .review p { font-size: 14px; color: var(--text); margin: 0 0 12px; line-height: 1.7; }
    .review .who { font-size: 12px; color: var(--muted); }

    .quote-list { display: flex; flex-direction: column; gap: 12px; }
    .quote-bar {
      display: grid; grid-template-columns: 180px 1fr;
      gap: 24px; align-items: center;
      background: var(--paper-2); border-left: 3px solid var(--ink);
      padding: 18px 22px;
    }
    .quote-bar .org { font-size: 13px; color: var(--seal); font-weight: 600; }
    .quote-bar p { margin: 0; font-family: var(--font-serif); font-size: 17px; line-height: 1.7; }

    .news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .news-card {
      display: grid; grid-template-columns: 168px 1fr; gap: 16px;
      background: var(--ivory); border: 1px solid var(--line);
      border-radius: var(--radius); overflow: hidden;
      min-height: 132px;
    }
    .news-card img { width: 100%; height: 100%; object-fit: cover; min-height: 132px; }
    .news-body { padding: 14px 16px 14px 0; }
    .news-date { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
    .news-card h3 { font-size: 18px; margin: 4px 0 8px; }
    .news-card p {
      font-size: 13px; color: var(--muted); margin: 0;
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    }
    .more-link {
      display: inline-flex; margin-top: 22px; min-height: 44px; align-items: center;
      font-weight: 600; color: var(--ink);
    }

    .bound-box {
      display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
      background: var(--ivory); border: 1px solid var(--line);
      padding: 32px; border-radius: var(--radius);
    }
    .bound-box h3 { font-size: 20px; margin-bottom: 10px; }
    .bound-box li { padding-left: 14px; position: relative; margin-bottom: 8px; color: var(--muted); }
    .bound-box li::before { content: "·"; position: absolute; left: 0; color: var(--seal); }

    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item button {
      width: 100%; text-align: left; min-height: 56px;
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      padding: 12px 4px; font-size: 17px; font-family: var(--font-serif); color: var(--text);
    }
    .faq-item button .plus {
      width: 22px; height: 22px; flex-shrink: 0; position: relative;
    }
    .faq-item button .plus::before, .faq-item button .plus::after {
      content: ""; position: absolute; background: var(--ink); left: 50%; top: 50%;
    }
    .faq-item button .plus::before { width: 12px; height: 1.5px; transform: translate(-50%, -50%); }
    .faq-item button .plus::after { width: 1.5px; height: 12px; transform: translate(-50%, -50%); transition: opacity .2s; }
    .faq-item.is-open button .plus::after { opacity: 0; }
    .faq-panel { display: none; padding: 0 8px 16px; color: var(--muted); font-size: 15px; line-height: 1.85; }
    .faq-item.is-open .faq-panel { display: block; }

    .cta {
      background: var(--ink) url("/assets/images/023d05fc64c9cd94.webp") center/cover no-repeat;
      position: relative; color: #EDE6D8;
    }
    .cta::before { content: ""; position: absolute; inset: 0; background: rgba(20, 36, 34, 0.9); }
    .cta .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; }
    .cta h2 { color: #FFFDF8; }
    .cta .section-desc { color: #C9C0B0; }
    .form {
      background: var(--ivory); color: var(--text);
      padding: 28px 26px; border-radius: var(--radius); border: 1px solid var(--line);
    }
    .form-row { margin-bottom: 14px; }
    .form label { display: block; font-size: 13px; margin-bottom: 6px; color: var(--text); font-weight: 600; }
    .form input, .form select, .form textarea {
      width: 100%; min-height: 44px; padding: 8px 12px;
      border: 1px solid var(--line); border-radius: var(--radius-sm);
      background: var(--white); color: var(--text);
    }
    .form textarea { min-height: 96px; resize: vertical; }
    .form input.is-error, .form select.is-error, .form textarea.is-error {
      border-color: var(--seal);
    }
    .form .hint { font-size: 12px; color: var(--muted); margin-top: 10px; }
    .form-msg {
      display: none; margin-bottom: 12px; padding: 10px 12px;
      background: #E8F0EE; color: var(--ink); font-size: 14px; border-radius: var(--radius-sm);
    }
    .form-msg.is-show { display: block; }
    .form-msg.err { background: #F7E4E4; color: var(--seal-dark); }

    .site-footer {
      background: var(--ink-deep); color: #C9C0B0; padding: 48px 0 24px; font-size: 14px;
    }
    .foot-grid {
      display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px;
      padding-bottom: 28px; border-bottom: 1px solid rgba(212, 203, 184, 0.18);
    }
    .foot-brand .logo { color: #FFFDF8; display: inline-block; margin-bottom: 10px; }
    .foot-brand p { margin: 0 0 14px; max-width: 36em; line-height: 1.8; }
    .foot-anchors { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .foot-anchors a { color: #D8D0C2; min-height: 36px; display: inline-flex; align-items: center; }
    .foot-trust h3 { color: #FFFDF8; font-size: 16px; margin-bottom: 10px; }
    .foot-trust p { margin: 0 0 6px; }
    .foot-trust a { color: #D8D0C2; }
    .copyright { padding-top: 18px; font-size: 13px; color: #8C867C; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

    @media (max-width: 1280px) {
      .feat-grid, .pack-grid { gap: 20px; }
    }
    @media (max-width: 1024px) {
      :root { --header-h: 102px; }
      .hero-inner { grid-template-columns: 1fr; min-height: auto; padding: 40px 0 96px; }
      .hero-board { max-width: 520px; }
      .split, .split.reverse { grid-template-columns: 1fr; }
      .feat-grid { grid-template-columns: repeat(2, 1fr); }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .demo-stage { grid-template-columns: 1fr; }
      .steps { display: grid; grid-template-columns: repeat(4, 1fr); }
      .cta .container { grid-template-columns: 1fr; }
      .bound-box { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .stat { border-right: 0; border-bottom: 1px solid rgba(212, 203, 184, 0.22); padding: 18px 12px; }
      .case-item { grid-template-columns: 1fr; gap: 8px; }
      .quote-bar { grid-template-columns: 1fr; gap: 8px; }
    }
    @media (max-width: 768px) {
      .topbar { display: none; }
      .nav-desktop { display: none; }
      .header-cta { display: none; }
      .nav-toggle { display: flex; }
      :root { --header-h: 66px; }
      .section { padding: 64px 0; }
      .hero { min-height: auto; }
      h2 { font-size: 26px; }
      .feat-grid, .pack-grid, .price-grid, .news-grid, .stories, .compare-grid, .foot-grid {
        grid-template-columns: 1fr;
      }
      .scene-row, .scene-row:nth-child(even) { grid-template-columns: 1fr; }
      .scene-row:nth-child(even) .scene-media { order: 0; }
      .steps { grid-template-columns: 1fr 1fr; }
      .story.big { padding: 24px; }
      .price-wrap { overflow-x: auto; }
      .news-card { grid-template-columns: 1fr; }
      .news-card img { min-height: 160px; height: 160px; }
      .news-body { padding: 0 14px 14px; }
      .board-top { grid-template-columns: 1fr; justify-items: center; text-align: center; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, var(--container)); }
      .hero h1 { font-size: 30px; }
      .tiers { grid-template-columns: 1fr; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .feat-grid { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr; }
      .copyright { flex-direction: column; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important; transition: none !important;
      }
    }