/* Public subject guides: readable examples and ordinary crawlable links. */
.subject-page .intent-main { padding-top: 34px; }
.subject-page .intent-breadcrumb { margin-bottom: 18px; line-height: 1.8; }
.subject-nav { display: flex; flex-wrap: wrap; gap: 7px; padding-bottom: 32px; }
.subject-nav a { padding: 7px 12px; border: 1px solid #d6dec9; border-radius: 7px; color: #526449; font-size: 12px; line-height: 1.4; }
.subject-nav a:hover { background: #edf2e3; }
.subject-nav a[aria-current="page"] { background: #e0eabd; border-color: #c0cf9d; color: #30482e; }
.subject-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: center; gap: 50px; }
.subject-hero > *, .subject-cards > *, .subject-worked > * { min-width: 0; }
.subject-hero h1 { margin: 0; font-size: clamp(36px, 5.2vw, 64px); line-height: 1.1; letter-spacing: -.045em; overflow-wrap: anywhere; }
.subject-hero h1 span { display: block; margin-top: 8px; font-size: .75em; font-weight: 400; color: #718063; }
.subject-hero .intent-lead { margin-top: 22px; font-size: 17px; }
.subject-notebook { margin: 0; padding: 30px; background-color: #fffef8; background-image: linear-gradient(#63744710 1px, transparent 1px); background-size: 100% 30px; border: 1px solid #d7ddcb; border-radius: 4px 18px 18px 4px; box-shadow: 8px 9px 0 #e5e9db; }
.subject-notebook .intent-kicker { font-size: 10px; }
.subject-notebook h2 { margin: 15px 0; font-size: 24px; line-height: 1.45; letter-spacing: -.02em; }
.subject-notebook p { color: #58674c; font-size: 14px; line-height: 1.7; }
.subject-notebook .subject-answer-preview { display: block; margin: 20px 0; color: #365137; font-size: 30px; line-height: 1.3; }
.subject-notebook figcaption { color: #65735b; font-size: 11px; }
.subject-page .intent-section { margin-top: 66px; }
.subject-page .intent-section-heading h2 { font-size: clamp(29px, 3.6vw, 42px); line-height: 1.18; }
.subject-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.subject-card { padding: 24px; border: 1px solid #d6ddca; border-radius: 13px; background: #fffef8; }
.subject-card h2, .subject-card h3 { margin: 0 0 12px; font-size: 21px; line-height: 1.3; }
.subject-card h2 a, .subject-card h3 a { text-decoration: underline; text-decoration-color: #c1cfad; text-underline-offset: 5px; }
.subject-card p, .subject-card li { color: #5a6951; font-size: 14px; line-height: 1.7; }
.subject-card p:last-child { margin-bottom: 0; }
.subject-card ul { padding-left: 19px; margin-bottom: 0; }
.subject-card .subject-level { color: #657b4f; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.subject-card .text-link { margin-top: 12px; font-size: 13px; }
.subject-worked { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: 24px; padding: 28px; background: #edf1e2; border: 1px solid #d7dec9; border-radius: 15px; }
.subject-task h3 { margin: 6px 0 15px; font-size: 22px; line-height: 1.4; }
.subject-task p { margin-block: 12px; color: #59664e; font-size: 15px; }
.subject-solution { margin: 0; padding: 0; list-style: none; counter-reset: solution; }
.subject-solution li { position: relative; padding: 0 0 21px 41px; counter-increment: solution; }
.subject-solution li:last-child { padding-bottom: 0; }
.subject-solution li::before { content: counter(solution, decimal-leading-zero); position: absolute; top: 0; left: 0; color: #7b895d; font-size: 12px; font-weight: 600; }
.subject-solution h3 { margin: 0 0 7px; font-size: 18px; line-height: 1.4; }
.subject-solution p { margin: 0; color: #53624b; font-size: 14px; line-height: 1.75; }
.subject-solution code { display: block; margin-top: 9px; font-family: Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; line-height: 1.65; color: #344c32; }
.subject-answer { margin: 16px 0 0; padding: 16px 20px; background: #355440; border-radius: 9px; color: #fffef5; font-size: 15px; }
.subject-page .intent-hint { font-size: 12px; }
.subject-context { max-width: 850px; margin-top: 22px; font-size: 14px; color: #617054; }
.subject-context a, .subject-related a { text-decoration: underline; text-underline-offset: 4px; }
.subject-related { margin-top: 48px; }
.subject-related h2 { margin: 0 0 14px; font-size: 21px; }
.subject-related nav { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 14px; }
.subject-page .intent-launcher { margin-top: 48px; }
.subject-page .intent-launcher-free { margin-bottom: 0; font-size: 12px; line-height: 1.7; }
.subject-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.subject-tools .subject-card { background: transparent; }
@media (max-width: 900px) {
  .subject-hero { gap: 30px; }
  .subject-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .subject-worked { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .subject-hero { grid-template-columns: 1fr; gap: 32px; }
  .subject-notebook { padding: 24px; }
  .subject-hero h1 { max-width: 600px; }
  .subject-page .intent-section { margin-top: 52px; }
}
@media (max-width: 560px) {
  .subject-page .intent-main { padding-top: 24px; }
  .subject-nav { gap: 6px; padding-bottom: 26px; }
  .subject-nav a { padding: 7px 9px; font-size: 11px; }
  .subject-hero h1 { font-size: clamp(31px, 8.6vw, 44px); }
  .subject-hero .intent-lead { font-size: 16px; }
  .subject-cards, .subject-tools { grid-template-columns: 1fr; }
  .subject-card, .subject-worked { padding: 21px; }
  .subject-solution li { padding-left: 31px; }
  .subject-notebook .subject-answer-preview { font-size: 26px; }
  .subject-answer { padding: 15px; }
}