:root {
      --ink: #101310;
      --muted: #596057;
      --paper: #f7f7f2;
      --white: #ffffff;
      --line: #cfd4cb;
      --green: #176c2b;
      --signal: #39ff68;
      --serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", serif;
      --sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
      --measure: 720px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: var(--sans);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    img { display: block; max-width: 100%; }
    a { color: inherit; }
    a:focus-visible {
      outline: 3px solid var(--signal);
      outline-offset: 4px;
    }
    .progress {
      position: fixed;
      z-index: 30;
      inset: 0 auto auto 0;
      width: 100%;
      height: 4px;
      background: var(--signal);
      transform: scaleX(0);
      transform-origin: left center;
    }
    .site-header {
      position: relative;
      z-index: 20;
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 76px;
      padding: 14px clamp(20px, 4vw, 64px);
      border-bottom: 1px solid rgba(255,255,255,.2);
      color: var(--white);
      background: var(--ink);
    }
    .brand {
      color: var(--white);
      font-family: var(--serif);
      font-size: 18px;
      font-weight: 800;
      letter-spacing: .02em;
      text-decoration: none;
    }
    .back-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-height: 44px;
      font-size: 14px;
      font-weight: 700;
      text-decoration: none;
      flex-shrink: 0;
    }
    .back-link::before {
      content: "";
      width: 22px;
      height: 1px;
      background: var(--signal);
      transition: transform 180ms ease-out;
    }
    .back-link:hover::before { transform: scaleX(1.5); }

    .article-hero {
      color: var(--white);
      background: var(--ink);
    }
    .hero-copy {
      width: min(1160px, calc(100% - 48px));
      margin: 0 auto;
      padding: clamp(72px, 10vw, 144px) 0 clamp(54px, 8vw, 96px);
    }
    .hero-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin: 0 0 30px;
      color: #d8ddd5;
      font-size: 14px;
      font-weight: 700;
    }
    .hero-meta::before {
      content: "";
      width: 9px;
      height: 9px;
      background: var(--signal);
    }
    h1 {
      max-width: 1040px;
      margin: 0;
      font-family: var(--serif);
      font-size: clamp(64px, 8.4vw, 118px);
      font-weight: 700;
      line-height: .98;
      letter-spacing: -.035em;
    }
    h1 span { display: block; white-space: nowrap; }
    .deck {
      max-width: 760px;
      margin: 42px 0 0;
      color: #f2f4ef;
      font-family: var(--serif);
      font-size: clamp(21px, 2vw, 29px);
      line-height: 1.55;
    }
    .hero-figure {
      margin: 0;
      background: #050705;
    }
    .hero-figure img {
      width: 100%;
      aspect-ratio: 3 / 2;
      object-fit: cover;
      object-position: center 52%;
    }
    .hero-figure figcaption,
    .inline-figure figcaption {
      padding: 12px clamp(20px, 4vw, 64px) 16px;
      color: #cbd1c8;
      background: var(--ink);
      font-size: 13px;
      line-height: 1.6;
    }

    .article-shell {
      display: grid;
      grid-template-columns: minmax(160px, 220px) minmax(0, var(--measure));
      gap: clamp(52px, 8vw, 124px);
      width: min(1120px, calc(100% - 48px));
      margin: 0 auto;
      padding: clamp(74px, 9vw, 132px) 0 100px;
    }
    .toc {
      align-self: start;
      position: sticky;
      top: 28px;
      border-top: 2px solid var(--ink);
    }
    .toc strong {
      display: block;
      padding: 14px 0;
      border-bottom: 1px solid var(--line);
      font-size: 13px;
    }
    .toc a {
      display: block;
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
      line-height: 1.45;
      text-decoration: none;
    }
    .toc a:hover { color: var(--green); }

    .article-body {
      min-width: 0;
      font-family: var(--serif);
      font-size: 20px;
      line-height: 1.95;
    }
    .article-body > p:first-child::first-letter {
      float: left;
      margin: .12em .13em 0 0;
      color: var(--green);
      font-size: 4.2em;
      font-weight: 700;
      line-height: .78;
    }
    .article-body p { margin: 0 0 1.25em; }
    .article-body h2 {
      margin: 4.4em 0 1.15em;
      padding-top: .45em;
      border-top: 4px solid var(--ink);
      font-size: clamp(32px, 3.1vw, 46px);
      font-weight: 700;
      line-height: 1.34;
      letter-spacing: -.025em;
    }
    .article-body h3 {
      margin: 2.8em 0 .8em;
      font-size: 27px;
      line-height: 1.5;
    }
    .article-body strong { font-weight: 800; }
    .article-body .lead-end {
      margin: 2.4em 0 0;
      font-size: 1.12em;
      font-weight: 700;
    }
    .question-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      margin: 2.2em 0;
      border-top: 1px solid var(--ink);
      border-bottom: 1px solid var(--ink);
    }
    .question-grid p {
      margin: 0;
      padding: 22px 18px 24px 0;
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.65;
    }
    .question-grid p + p {
      padding-left: 18px;
      border-left: 1px solid var(--line);
    }
    .point {
      display: grid;
      grid-template-columns: 42px minmax(0, 1fr);
      gap: 18px;
      padding: 30px 0 28px;
      border-top: 1px solid var(--line);
    }
    .point:last-of-type { border-bottom: 1px solid var(--line); }
    .point-number {
      display: grid;
      place-items: center;
      width: 42px;
      height: 42px;
      color: var(--white);
      background: var(--green);
      font-family: var(--sans);
      font-size: 16px;
      font-weight: 800;
    }
    .point h3 { margin: .05em 0 .65em; }
    .point p:last-child { margin-bottom: 0; }
    .inline-figure {
      width: min(980px, calc(100vw - 48px));
      margin: 3.5em 0 3.5em max(-1 * clamp(0px, 7vw, 130px));
      background: var(--ink);
    }
    .inline-figure img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      object-position: center 45%;
    }
    .timeline {
      margin: 2.4em 0;
      border-top: 2px solid var(--ink);
    }
    .phase {
      display: grid;
      grid-template-columns: 145px minmax(0, 1fr);
      gap: 28px;
      padding: 28px 0 30px;
      border-bottom: 1px solid var(--line);
    }
    .phase-label {
      font-family: var(--sans);
      font-size: 15px;
      font-weight: 800;
      line-height: 1.5;
    }
    .phase h3 { margin: 0 0 .6em; }
    .phase p:last-child { margin-bottom: 0; }
    .article-body ul {
      margin: .6em 0 1.5em;
      padding: 0;
      list-style: none;
    }
    .article-body li {
      position: relative;
      margin: 0 0 .7em;
      padding-left: 27px;
    }
    .article-body li::before {
      content: "";
      position: absolute;
      top: .78em;
      left: 0;
      width: 9px;
      height: 9px;
      background: var(--green);
    }
    .closing-question {
      margin: 2.4em 0 1.25em;
      padding: 1.2em 0;
      border-top: 1px solid var(--ink);
      border-bottom: 1px solid var(--ink);
      color: var(--green);
      font-size: 1.3em;
      font-weight: 800;
      line-height: 1.6;
    }
    .disclaimer {
      margin-top: 4em;
      padding: 26px 0;
      border-top: 1px solid var(--ink);
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-family: var(--sans);
      font-size: 14px;
      line-height: 1.75;
    }
    .sources {
      margin-top: 22px;
      color: var(--muted);
      font-family: var(--sans);
      font-size: 13px;
      line-height: 1.7;
    }
    .sources strong { color: var(--ink); }
    .sources a { text-underline-offset: 3px; }
    .site-footer {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 40px;
      padding: 54px clamp(20px, 4vw, 64px);
      color: var(--white);
      background: var(--ink);
    }
    .site-footer strong {
      display: block;
      max-width: 680px;
      font-family: var(--serif);
      font-size: clamp(28px, 4vw, 52px);
      line-height: 1.2;
    }
    .site-footer a {
      flex: 0 0 auto;
      padding-bottom: 5px;
      border-bottom: 1px solid var(--signal);
      font-size: 14px;
      font-weight: 700;
      text-decoration: none;
    }

    @media (max-width: 860px) {
      .hero-copy { width: min(100% - 40px, 680px); }
      h1 { font-size: clamp(45px, 11.5vw, 72px); }
      .article-shell {
        display: block;
        width: min(100% - 40px, var(--measure));
        padding-top: 58px;
      }
      .toc {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        margin-bottom: 68px;
      }
      .toc strong { grid-column: 1 / -1; }
      .toc a:nth-of-type(even) { padding-left: 14px; border-left: 1px solid var(--line); }
      .article-body { font-size: 19px; }
      .inline-figure {
        width: calc(100vw - 40px);
        margin-left: 0;
      }
    }

    @media (max-width: 560px) {
      .site-header { min-height: 68px; padding: 12px 20px; }
      .brand { font-size: 15px; }
      .back-link { font-size: 13px; }
      .hero-copy { width: calc(100% - 40px); padding: 70px 0 52px; }
      .hero-meta { margin-bottom: 22px; }
      h1 { font-size: clamp(35px, 9.8vw, 44px); line-height: 1.08; letter-spacing: -.03em; }
      .deck { margin-top: 28px; font-size: 20px; overflow-wrap: anywhere; }
      .hero-figure img { aspect-ratio: 3 / 2; object-position: center; }
      .hero-figure figcaption { padding: 10px 20px 14px; }
      .article-shell { width: calc(100% - 40px); padding: 48px 0 72px; }
      .toc { grid-template-columns: 1fr; margin-bottom: 54px; }
      .toc a:nth-of-type(even) { padding-left: 0; border-left: 0; }
      .article-body { font-size: 18px; line-height: 1.9; }
      .article-body h2 { margin-top: 3.5em; font-size: 30px; }
      .article-body h3 { font-size: 23px; }
      .question-grid { grid-template-columns: 1fr; }
      .question-grid p { padding: 17px 0; }
      .question-grid p + p { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
      .point { grid-template-columns: 36px minmax(0, 1fr); gap: 14px; }
      .point-number { width: 36px; height: 36px; }
      .inline-figure { width: calc(100vw - 40px); }
      .phase { grid-template-columns: 1fr; gap: 10px; }
      .phase-label { color: var(--green); }
      .site-footer { display: block; padding: 44px 20px; }
      .site-footer a { display: inline-block; margin-top: 32px; }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition-duration: .01ms !important; }
    }