:root {
  --accent: var(--navy);
  --ink-soft: #3d424c;
  --gray: var(--muted);
  --gray-d: #a8acb4;
  --rule: var(--line);
  --rule-2: #e7e9ee;
  --canvas2: var(--pale);
  --warm: #f7f7f5;
}

.article { padding: 82px 0 0; }
.article > .wrap { width: min(1040px, calc(100% - 56px)); margin: 0 auto; }
.crumb { padding: 42px 0 0; color: var(--muted); font-size: .7rem; letter-spacing: .02em; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--navy); }
.crumb span { margin: 0 9px; color: #afb3bb; }

.arthead { padding: clamp(58px, 7vw, 100px) 0 clamp(58px, 7vw, 92px); border-bottom: 1px solid var(--ink); }
.arthead .cat { display: flex; align-items: center; gap: 14px; color: var(--navy); font-size: .7rem; font-weight: 700; letter-spacing: .1em; }
.arthead .cat::before { content: ""; width: 36px; height: 1px; background: var(--navy); }
.art-h1 { max-width: 1000px; margin: 28px 0 0; font-family: inherit; font-size: clamp(2.5rem, 5vw, 4.8rem); font-weight: 700; line-height: 1.38; letter-spacing: -.025em; }
.art-dek { max-width: 780px; margin: 34px 0 0; color: var(--muted); font-size: clamp(.98rem, 1.35vw, 1.1rem); line-height: 2; }
.art-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; margin-top: 35px; color: var(--muted); font-size: .78rem; }
.art-meta .by { color: var(--ink); font-weight: 700; }
.art-meta .rt { color: var(--navy); font-style: normal; }

.keypoints { max-width: 820px; display: grid; grid-template-columns: 110px minmax(0,1fr); gap: 34px; margin: 62px auto 70px; padding: 30px 0 12px; background: transparent; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.keypoints .kp-label { margin: 2px 0 0; color: var(--navy); font-size: .68rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.keypoints ul { margin: 0; padding: 0; list-style: none; }
.keypoints li { margin: 0; padding: 0 0 17px; color: #222838; font-size: .98rem; line-height: 1.9; }
.keypoints li + li { padding-top: 17px; border-top: 1px solid var(--rule-2); }

.artbody { max-width: 760px; margin: 0 auto; padding: 0 0 105px; }
.artbody > p:first-child { font-size: 1.1rem; color: var(--ink); }
.artbody p { margin: 0 0 1.55em; color: var(--ink-soft); font-size: 1.02rem; line-height: 2.08; }
.artbody strong { color: var(--ink); font-weight: 700; }
.artbody h2 { position: relative; margin: 78px 0 27px; padding-top: 30px; border-top: 1px solid var(--line); font-family: inherit; font-size: clamp(1.65rem, 3vw, 2.3rem); font-weight: 700; line-height: 1.58; letter-spacing: -.01em; }
.artbody h2:first-child { margin-top: 0; }
.artbody h3 { margin: 45px 0 18px; font-family: inherit; font-size: 1.25rem; line-height: 1.65; }
.artbody ul, .artbody ol { margin: 0 0 1.8em; padding-left: 1.4em; }
.artbody li { margin-bottom: .8em; color: var(--ink-soft); font-size: 1rem; line-height: 1.95; }
.artbody a { color: var(--navy); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.artbody blockquote { margin: 32px 0; padding: 8px 0 8px 26px; border-left: 2px solid var(--navy); color: var(--ink); }

.tblwrap { overflow-x: auto; margin: 25px 0 40px; border: 1px solid var(--line); background: #fff; }
.artbody table { width: 100%; min-width: 640px; border-collapse: collapse; font-size: .88rem; }
.artbody th { padding: 15px 16px; color: var(--ink); background: var(--pale); border-bottom: 1px solid var(--ink); text-align: left; white-space: nowrap; }
.artbody td { padding: 14px 16px; color: var(--ink-soft); border-bottom: 1px solid var(--line); line-height: 1.75; vertical-align: top; }
.artbody tr:last-child td { border-bottom: 0; }

.artbody .fig { margin: 34px 0 42px; padding: 28px; background: var(--pale); border: 1px solid var(--line); border-radius: 0; }
.artbody .fig svg, .artbody .fig img { width: 100%; height: auto; }
.artbody .fig figcaption, .artbody .src { margin-top: 14px; color: var(--muted); font-size: .75rem; line-height: 1.7; }
.artbody .faq { margin-top: 35px; border-top: 1px solid var(--ink); }
.artbody .faq .q { margin: 0; padding: 22px 0 8px; color: var(--ink); font-weight: 700; }
.artbody .faq .qa { margin: 0; padding: 0 0 22px; border-bottom: 1px solid var(--line); }

.artdiv { height: 1px; margin: 65px 0 38px; background: var(--line); }
.kwline { margin-bottom: 34px !important; color: var(--muted) !important; font-size: .82rem !important; line-height: 1.9 !important; }
.kwline b { color: var(--ink); }
.related { margin-top: 32px; }
.related h3, .author-note h3 { margin: 0 0 17px; font-family: inherit; font-size: 1.12rem; }
.related ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.related li { margin: 0; padding: 15px 0; border-bottom: 1px solid var(--line); }
.related a { display: inline-flex; align-items: baseline; gap: 12px; color: var(--ink); text-decoration: none; }
.related a::before { content: "→"; color: var(--navy); }
.related .ask { margin-top: 24px; font-size: .9rem; }
.author-note { margin-top: 50px; padding: 32px 34px; background: var(--pale); border-radius: 0; }
.author-note .an-name { color: var(--ink); font-size: 1.04rem; font-weight: 700; }
.author-note .an-role { margin: 4px 0 15px; color: var(--navy); font-size: .78rem; font-style: normal; }
.author-note p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.95; }

.article .material-strip, .article + .material-strip { margin-top: 0; }

@media (max-width: 900px) {
  .article { padding-top: 70px; }
  .crumb { padding-top: 28px; }
  .art-h1 { font-size: clamp(2.3rem, 8vw, 3.4rem); }
  .keypoints { margin-top: 46px; }
}

@media (max-width: 560px) {
  .article > .wrap { width: calc(100% - 40px); }
  .arthead { padding: 48px 0 56px; }
  .art-h1 { font-size: clamp(2.15rem, 10vw, 3rem); line-height: 1.48; }
  .art-dek { margin-top: 25px; font-size: .92rem; }
  .art-meta { gap: 7px 16px; }
  .keypoints { grid-template-columns: 1fr; gap: 18px; margin: 42px 0 58px; padding: 24px 0 10px; }
  .keypoints li { font-size: .92rem; }
  .artbody { padding-bottom: 80px; }
  .artbody > p:first-child { font-size: 1.02rem; }
  .artbody p, .artbody li { font-size: .96rem; }
  .artbody h2 { margin-top: 62px; font-size: 1.6rem; }
  .artbody h3 { font-size: 1.15rem; }
  .artbody .fig { margin-left: -5px; margin-right: -5px; padding: 20px 16px; }
  .author-note { padding: 27px 23px; }
}