:root {
      --bg: #f6fbf7;
      --surface: #ffffff;
      --line: #d8eadf;
      --ink: #10201a;
      --muted: #5f7168;
      --green: #008c3a;
      --green-soft: #dff5e7;
      --radius: 22px;
      --max: 1180px;
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: Inter, system-ui, sans-serif;
      background: var(--bg);
      color: var(--ink);
      line-height: 1.6;
    }

    a { color: inherit; text-decoration: none; }
    .container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

    .nav {
      position: sticky;
      top: 0;
      z-index: 40;
      border-bottom: 1px solid rgba(216, 234, 223, .82);
      background: rgba(246, 251, 247, .82);
      backdrop-filter: blur(18px);
    }

    .nav-inner {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      letter-spacing: -.04em;
    }

    .brand-logo {
      width: 42px;
      height: 42px;
      object-fit: contain;
    }

    .brand-text strong { display: block; line-height: 1; font-size: 1.05rem; }
    .brand-text span { display: block; color: var(--muted); font-size: .74rem; letter-spacing: .01em; margin-top: 3px; }

    .nav-links {
      display: flex;
      gap: 24px;
      align-items: center;
      color: var(--muted);
      font-size: .94rem;
      font-weight: 700;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      line-height: 1;
    }

    .nav-links a:hover,
    .nav-links a.active { color: var(--green); }

    .nav-art {
      display: block;
      width: 80px;
      height: 80px;
      object-fit: contain;
      flex: 0 0 80px;
    }

    .nav-item {
      position: relative;
      display: inline-flex;
      align-items: center;
    }

    .submenu {
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%);
      display: none;
      min-width: 104px;
      padding: 8px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--surface);
      box-shadow: 0 14px 32px rgba(0,0,0,.08);
      z-index: 60;
    }

    .nav-item:hover .submenu,
    .nav-item:focus-within .submenu {
      display: grid;
      gap: 4px;
    }

    .submenu a {
      padding: 8px 10px;
      border-radius: 10px;
      white-space: nowrap;
    }

    .submenu a:hover {
      background: var(--green-soft);
      text-decoration: none;
    }

    header {
      position: relative;
      overflow: hidden;
      min-height: 500px;
      padding: 90px 0 120px;
      isolation: isolate;
    }

    header::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: 0;
      background-image: url("../images/site/methodology.svg");
      background-position: right max(20px, calc((100vw - var(--max)) / 2)) top 20px;
      background-size: min(540px, 43vw) auto;
      background-repeat: no-repeat;
      opacity: .46;
      -webkit-mask-image: linear-gradient(225deg, #000 0%, rgba(0,0,0,.82) 34%, rgba(0,0,0,.38) 68%, transparent 96%);
      mask-image: linear-gradient(225deg, #000 0%, rgba(0,0,0,.82) 34%, rgba(0,0,0,.38) 68%, transparent 96%);
      pointer-events: none;
    }

    header::after {
      content: "";
      position: absolute;
      inset: 0;
      z-index: 0;
      background:
        linear-gradient(135deg, rgba(246, 251, 247, .96) 0%, rgba(246, 251, 247, .72) 42%, rgba(246, 251, 247, .18) 100%),
        linear-gradient(180deg, rgba(246, 251, 247, 0) 0%, rgba(246, 251, 247, .20) 76%, var(--bg) 100%);
      pointer-events: none;
    }

    header .container {
      position: relative;
      z-index: 1;
    }

    .kicker {
      color: var(--green);
      font-size: .78rem;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: .14em;
    }

    h1 {
      margin: 14px 0 18px;
      font-size: clamp(3rem, 6vw, 5.5rem);
      line-height: .92;
      letter-spacing: -.00em;
    }

    .lead {
      max-width: 760px;
      color: var(--muted);
      font-size: 1.08rem;
    }

    .highlight-line {
      margin: 0 0 18px;
      color: var(--green);
      font-size: clamp(1.5rem, 3vw, 2.3rem);
      font-weight: 900;
      line-height: 1.2;
    }

    .year-block {
      margin-bottom: 44px;
    }

    .year-title {
      margin: 0 0 18px;
      color: var(--green);
      font-size: 1.8rem;
      letter-spacing: -.05em;
    }

    .year-title-normal {
      letter-spacing: 0;
    }

    .prep-title-heading {
      margin-bottom: 8px;
    }

    .paper {
      position: relative;
      min-height: 236px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      padding-right: calc(min(320px, 30%) + 24px);
      margin-bottom: 14px;
      box-shadow: 0 10px 32px rgba(0,0,0,.04);
      overflow: hidden;
      -webkit-user-drag: none;
      user-select: none;
    }

    .paper > * {
      position: relative;
      z-index: 1;
    }

    .paper::after {
      content: "";
      display: block;
      position: absolute;
      top: 24px;
      right: 24px;
      height: 188px;
      width: min(320px, 30%);
      border-radius: 18px;
      background-image: var(--paper-image, url("../images/site/mint-lab-square-logo.svg"));
      background-position: center;
      background-size: contain;
      background-repeat: no-repeat;
      background-color: transparent;
      z-index: 0;
      pointer-events: none;
    }

    .paper h3 {
      margin: 0 0 8px;
      font-size: 1.15rem;
      letter-spacing: -.03em;
    }

    .paper h3 a:hover { color: var(--green); }

    .authors {
      color: var(--muted);
      margin-bottom: 8px;
    }

    .author-note {
      color: var(--muted);
      font-size: .9rem;
      margin-top: 10px;
    }

    .author-highlight {
      text-decoration: underline;
      text-decoration-thickness: 2px;
      text-underline-offset: 3px;
    }

    .venue {
      color: var(--green);
      font-weight: 800;
      margin-bottom: 14px;
    }

    .links {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 14px;
      border-radius: 999px;
      background: var(--green-soft);
      color: var(--green);
      font-weight: 800;
      font-size: .9rem;
    }

    .button-news {
      background: #e7f1f8;
      color: #24617d;
    }

    .button-video {
      background: #fff0e2;
      color: #b75b12;
    }

    .button-scholar {
      background: #eef1f0;
      color: #5f7168;
    }

    .button-arxiv {
      background: #f8e7e7;
      color: #b31b1b;
    }

    .button-code {
      background: #e8ecf7;
      color: #344c8a;
    }

    .button-cover {
      background: #fff4cc;
      color: #9a6a00;
    }

    .prep-list {
      display: grid;
      gap: 0;
    }

    .prep-item {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 5px 0;
      border-bottom: 1px solid var(--line);
    }

    .prep-item .button {
      justify-self: start;
      width: max-content;
    }

    .prep-title {
      font-weight: 800;
    }

    .prep-meta {
      color: var(--muted);
      font-size: .95rem;
    }

    @media (max-width: 840px) {
      header {
        min-height: 420px;
        padding: 70px 0 90px;
      }

      header::before {
        background-position: right 20px top;
        background-size: 410px auto;
      }

      .paper {
        min-height: auto;
        padding-right: 24px;
      }

      .prep-item {
        grid-template-columns: 1fr;
      }

      .prep-item .button {
        align-self: start;
      }

      .paper::after {
        display: block;
        position: relative;
        top: auto;
        right: auto;
        bottom: auto;
        width: 100%;
        height: 220px;
        margin-top: 18px;
      }
    }

    .footer-inner { display: flex; justify-content: space-between; gap: 22px; flex-wrap: wrap; }

    footer {
      border-top: 1px solid var(--line);
      margin-top: 80px;
      padding: 32px 0;
      color: var(--muted);
    }