@font-face { font-family: "Noto Sans Thai"; src: url("/assets/fonts/NotoSansThai-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Noto Sans Thai"; src: url("/assets/fonts/NotoSansThai-Bold.ttf") format("truetype"); font-weight: 700; font-display: swap; }

:root {
  color-scheme: light;
  --ink: #102a43;
  --muted: #526579;
  --paper: #fbfbf7;
  --surface: #ffffff;
  --line: #d9e0e7;
  --soft: #eef3f8;
  --accent: #1d4ed8;
  --accent-dark: #173ea8;
  --good: #047857;
  --warn: #9a3412;
  --radius: 16px;
  --shadow: 0 14px 38px rgba(16, 42, 67, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.68 "Noto Sans", Inter, system-ui, -apple-system, sans-serif;
  text-rendering: optimizeLegibility;
}
html[lang^="th"] body { font-family: "Noto Sans Thai", "Noto Sans", sans-serif; }
a { color: var(--accent); text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--accent-dark); }
a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 3px;
}
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 20; background: var(--ink); color: white; padding: .65rem 1rem; }
.skip-link:focus { top: 1rem; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(251, 251, 247, .94); }
.header-inner, .shell { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }
.header-inner { min-height: 72px; display: flex; align-items: center; gap: 30px; }
.brand { color: var(--ink); font-size: 1.05rem; font-weight: 820; letter-spacing: .02em; text-decoration: none; }
.brand-mark { display: inline-flex; align-items: end; justify-content: center; gap: 2px; width: 1.85rem; aspect-ratio: 1; margin-right: .5rem; padding: 6px; border: 2px solid currentColor; border-radius: 50%; }
.brand-mark i { display: block; width: 3px; border-radius: 2px; background: currentColor; }
.brand-mark i:nth-child(1) { height: 6px; }
.brand-mark i:nth-child(2) { height: 9px; }
.brand-mark i:nth-child(3) { height: 13px; }
.main-nav { display: flex; gap: 22px; margin-left: auto; }
.main-nav a { color: var(--ink); font-size: .9rem; font-weight: 680; text-decoration: none; }
.language-link { border-left: 1px solid var(--line); padding-left: 22px; }
.eyebrow { margin: 0 0 .55rem; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: clamp(40px, 6vw, 92px); align-items: center; padding-block: clamp(64px, 8vw, 116px); }
/* `overflow-wrap: anywhere` 가 걸려 있어 일본어 제목이 단어 중간에서 끊겼다
   (2026-10-02 실측). 긴 라틴 단어만 끊고 CJK·태국어는 그 언어의 줄바꿈
   규칙을 따르게 한다. 자간도 -.055em 은 큰 글자에서 글자가 붙어 보인다. */
.hero h1, .article-head h1 { margin: 0; font-size: clamp(2.35rem, 5vw, 4.6rem);
  line-height: 1.04; letter-spacing: -.04em; overflow-wrap: break-word;
  word-break: normal; line-break: strict; text-wrap: balance; }
/* CJK·태국어는 전각이라 같은 rem 이 라틴보다 훨씬 넓다. 같은 크기로 두면 제목이
   다섯 줄로 쏟아진다(2026-10-02 실측). 한 단계 낮추고 행간을 벌린다. */
html[lang^="ja"] .hero h1, html[lang^="ja"] .article-head h1,
html[lang^="th"] .hero h1, html[lang^="th"] .article-head h1 {
  font-size: clamp(1.95rem, 3.6vw, 3.2rem); letter-spacing: -.01em; line-height: 1.34; }
.hero-copy { max-width: 720px; }
.hero-copy > p:not(.eyebrow) { max-width: 620px; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; min-height: 48px; padding: .65rem 1.05rem; border: 1px solid var(--ink); border-radius: 10px; color: var(--ink); font-weight: 760; text-decoration: none; }
.button.primary { border-color: var(--accent); background: var(--accent); color: white; }
.button.primary:hover { background: var(--accent-dark); color: white; }
/* **가짜 도형을 치우고 진짜 표를 놓는다**(2026-10-02). 그 전에는 흰 박스 둘에
   빨간 사선 하나였고, 그 사선이 `PSU` 글자를 뚫고 지나갔다. 도형이 내용 자리를
   대신 서 있던 것이라 다듬는 대신 **최신 글의 실제 비교표**로 바꿨다 — 이 사이트가
   파는 것이 그 표다. 매일 새 글이 나가므로 첫 화면이 저절로 갱신된다. */
.hero-proof { display: block; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: inherit; text-decoration: none; overflow: hidden; }
.hero-proof:hover { border-color: var(--ink); }
.hero-proof:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.hero-proof figcaption { display: flex; justify-content: space-between; gap: 14px;
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--soft);
  color: var(--muted); font-size: .8rem; }
.hero-proof figcaption b { color: var(--ink); font-weight: 700; }
.hero-proof table { width: 100%; min-width: 0; border-collapse: collapse; font-size: .92rem;
  font-variant-numeric: tabular-nums; }
.hero-proof th, .hero-proof td { padding: 12px 20px; border-bottom: 1px solid var(--line);
  text-align: left; vertical-align: baseline; overflow-wrap: normal; word-break: keep-all; }
.hero-proof tbody th { width: 34%; }
.hero-proof thead th { background: transparent; color: var(--muted); font-size: .76rem;
  font-weight: 700; letter-spacing: .02em; }
.hero-proof tbody th { color: var(--muted); font-weight: 500; }
.hero-proof tbody td { font-weight: 650; }
.hero-proof tbody tr:last-child th, .hero-proof tbody tr:last-child td { border-bottom: 0; }
.hero-proof .win { display: inline-block; margin-left: .45em; padding: .1em .45em;
  border-radius: 999px; background: #e7f3ee; color: var(--good); font-size: .68rem;
  font-weight: 800; letter-spacing: .02em; vertical-align: .08em; }
.hero-proof .tie { color: var(--muted); font-weight: 500; }
.hero-proof footer { padding: 13px 20px; color: var(--accent); font-size: .84rem;
  font-weight: 650; }
.section { padding-block: 70px; border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 30px; }
.section-heading h2 { max-width: 720px; margin: 0; font-size: clamp(1.8rem, 3.5vw, 3rem); line-height: 1.08; letter-spacing: -.035em; }
.section-heading p { max-width: 430px; margin: 0; color: var(--muted); }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.topic-card { min-height: 220px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--ink); text-decoration: none; transition: transform .18s, box-shadow .18s; }
.topic-card:hover { color: var(--ink); transform: translateY(-3px); box-shadow: var(--shadow); }
.topic-number { color: var(--accent); font: 750 .78rem ui-monospace, monospace; }
.topic-card h3 { margin: 2.7rem 0 .65rem; font-size: 1.3rem; line-height: 1.2; }
.topic-card p { margin: 0; color: var(--muted); font-size: .93rem; }
.latest-list { display: grid; border-top: 1px solid var(--line); }
.latest-item { display: grid; grid-template-columns: 150px minmax(0, 1fr) auto; gap: 24px; align-items: baseline; padding: 23px 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.latest-item time, .latest-item span { color: var(--muted); font-size: .84rem; }
.latest-item strong { font-size: 1.06rem; }
.method-strip { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1px; overflow: hidden; border: 1px solid var(--ink); border-radius: var(--radius); background: var(--ink); }
.method-strip div { padding: 24px; background: var(--surface); }
.method-strip strong { display: block; margin-bottom: .45rem; }
.method-strip p { margin: 0; color: var(--muted); font-size: .9rem; }
.site-footer { margin-top: 80px; padding: 42px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .86rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.article-head { padding: 76px 0 46px; }
.article-head h1 { max-width: 990px; font-size: clamp(2.6rem, 6vw, 5.8rem); }
.article-dek { max-width: 760px; margin: 1.4rem 0 0; color: var(--muted); font-size: 1.16rem; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 1.6rem; color: var(--muted); font-size: .84rem; }
.article-layout { display: grid; grid-template-columns: 200px minmax(0, 760px) minmax(0, 1fr); gap: 42px; align-items: start; }
.toc { position: sticky; top: 24px; padding-top: 8px; font-size: .82rem; }
.toc strong { display: block; margin-bottom: .65rem; color: var(--muted); text-transform: uppercase; letter-spacing: .09em; }
.toc a { display: block; margin: .48rem 0; color: var(--ink); text-decoration: none; }
.article-body { min-width: 0; }
.article-body > p:first-of-type { font-size: 1.16rem; }
.article-body h2 { margin: 3.25rem 0 1rem; font-size: clamp(1.65rem, 3vw, 2.25rem); line-height: 1.16; letter-spacing: -.028em; }
.article-hero { margin: 0 0 2.2rem; }
.article-hero img { display: block; width: 100%; height: auto; border-radius: 12px; }
/* **굵은 색 좌측 띠를 걷었다**(2026-10-02). AI 가 만든 UI 의 가장 알아보기 쉬운
   표시이고 품질 기준이 명시적으로 금지한다. 이 자리는 글에서 제일 중요한 문장이라
   장식이 아니라 **조판**으로 세운다 — 위에 얇은 전폭 괘선, 큰 활자, 넉넉한 여백. */
.answer-box { margin: 0 0 2.4rem; padding: 1.6rem 0 0; border-top: 1px solid var(--ink);
  font-size: 1.22rem; line-height: 1.55; }
.answer-box strong { display: inline-block; margin: 0 0 .9rem; padding: .22em .6em;
  border-radius: 999px; background: var(--soft); color: var(--ink); font-size: .74rem;
  font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
.fact-note { margin: 2rem 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); font-size: .92rem; }
.wide-table { width: min(1100px, calc(100vw - 48px)); margin: 2rem 0 2rem 50%; transform: translateX(-50%); overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
table { width: 100%; min-width: 760px; border-collapse: collapse; font-size: .9rem; }
caption { padding: 15px 18px; color: var(--muted); font-size: .78rem; text-align: left; }
th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--soft); font-size: .78rem; letter-spacing: .03em; }
tbody tr:last-child td { border-bottom: 0; }
.side-proof { margin-top: 10px; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); font-size: .82rem; }
.side-proof strong { display: block; margin-bottom: .5rem; }
.check-list, .fact-list { display: grid; gap: 10px; padding: 0; list-style: none; }
.check-list li, .fact-list li { display: flex; justify-content: space-between; gap: 18px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.result-chip { color: var(--good); white-space: nowrap; }
/* 지표마다 한 단락. 카드가 아니라 **정의 목록처럼** 읽히게 한다 — 같은 크기 카드를
   늘어놓는 것이 품질 기준이 금지하는 바로 그 구조다(2026-10-02). */
.metric-notes { display: grid; gap: 1.6rem; margin: 1.4rem 0 0; }
.metric-note h3 { margin: 0 0 .3rem; font-size: 1rem; font-weight: 750;
  letter-spacing: -.01em; }
.metric-note p { margin: 0; color: var(--muted); }
.claim-list { display: grid; gap: 18px; padding: 0; list-style: none; }
.claim-list li { padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.claim-list details { margin-top: .55rem; color: var(--muted); font-size: .86rem; }
.claim-list summary { cursor: pointer; font-weight: 700; }
.claim-list blockquote { margin: .8rem 0 0; padding-left: 1rem; border-left: 1px solid var(--line); }
.fixture-banner { padding: .7rem 1rem; background: #fff4df; color: #713f12; font-size: .8rem; font-weight: 700; text-align: center; }
.language-page { min-height: calc(100vh - 72px); padding-block: clamp(60px, 10vw, 130px); }
.language-page h1 { max-width: 850px; margin: 0; font-size: clamp(2.8rem, 7vw, 6.4rem); line-height: .95; letter-spacing: -.06em; }
.language-page > p { max-width: 650px; color: var(--muted); font-size: 1.08rem; }
.language-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 48px; }
.language-card { display: flex; min-height: 124px; flex-direction: column; justify-content: space-between; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink); text-decoration: none; }
.language-card:hover { border-color: currentColor; color: var(--accent); }
.language-card small { color: var(--muted); }
.language-card.disabled { opacity: .62; cursor: not-allowed; }

@media (max-width: 1180px) {
  .main-nav { display: none; }
  .language-link { margin-left: auto; }
  .hero { grid-template-columns: 1fr; }
  .topic-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: minmax(0, 760px); justify-content: center; }
  .toc, .side-proof { display: none; }
  .language-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; line-height: 1.64; }
  .header-inner, .shell { width: min(100% - 32px, 1240px); }
  .header-inner { min-height: 62px; }
  .language-link { padding-left: 14px; font-size: .8rem; }
  .hero { padding-block: 52px; }
  .hero h1 { font-size: clamp(2.45rem, 14vw, 4rem); }
  .section { padding-block: 52px; }
  .section-heading { display: block; }
  .section-heading p { margin-top: 1rem; }
  .topic-grid, .method-strip { grid-template-columns: 1fr; }
  .latest-item { grid-template-columns: 1fr auto; gap: 8px 14px; }
  .latest-item time { grid-column: 1 / -1; }
  .article-head { padding: 48px 0 30px; }
  .article-head h1 { font-size: clamp(2.1rem, 11vw, 3.4rem); }
  .hero-proof { margin-top: 1.6rem; }
  .hero-proof table { font-size: .84rem; }
  .hero-proof th, .hero-proof td { padding: 10px 12px; }
  .hero-proof figcaption, .hero-proof footer { padding-inline: 12px; }
  .article-layout { display: block; }
  .check-list li, .fact-list li { align-items: start; }
  .wide-table { width: calc(100vw - 32px); }
  .language-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}