.guide-page { background: #fbfcfa; color: var(--ink); }
.guide-page main { overflow: visible; }
.guide-hero { padding: 185px 24px 105px; color: #fff; background: linear-gradient(105deg, rgba(7,48,37,.97), rgba(7,48,37,.77)), url("../assets/slider/slide-1.jpg") center/cover; }
.guide-hero-inner { width: min(920px, 100%); margin: auto; }
.guide-hero .eyebrow { color: var(--lime); }
.guide-hero h1 { max-width: 850px; margin: 20px 0 26px; font-size: clamp(46px, 7vw, 82px); font-weight: 500; line-height: 1; letter-spacing: -.055em; }
.guide-hero p { max-width: 760px; color: rgba(255,255,255,.79); font-size: 18px; line-height: 1.7; }
.guide-hero .hero-intro { color: #fff; font-size: clamp(20px, 2.2vw, 26px); line-height: 1.55; }
.button { display: inline-flex; align-items: center; justify-content: center; margin-top: 20px; padding: 15px 22px; border-radius: 999px; text-decoration: none; text-transform: uppercase; letter-spacing: .07em; font: 600 12px "Space Grotesk", sans-serif; }
.button-primary { color: #0b342a; background: var(--lime); }
.button-light { color: var(--green-deep); background: #fff; }
.button-outline { color: #fff; border: 1px solid rgba(255,255,255,.55); }
.button:focus-visible, .text-cta:focus-visible { outline: 3px solid var(--aqua); outline-offset: 4px; }
.article-shell { width: min(820px, calc(100% - 48px)); margin: 0 auto; padding: 35px 0 100px; }
.author-strip { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 1px; width: min(920px, calc(100% - 48px)); margin: -28px auto 20px; overflow: hidden; border: 1px solid #dce8e1; border-radius: 16px; background: #dce8e1; box-shadow: 0 14px 35px rgba(7,48,37,.09); }
.author-strip > div { display: flex; min-height: 78px; padding: 16px 20px; flex-direction: column; justify-content: center; background: #fff; }
.author-strip span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .07em; }
.author-strip strong { margin-top: 5px; color: var(--green); font-size: 14px; }
.article-shell a:not(.button), .about a:not(.button) { color: var(--green); font-weight: 600; text-decoration-color: var(--aqua); text-decoration-thickness: 2px; text-underline-offset: 4px; }
.article-shell section { padding: 72px 0; border-bottom: 1px solid var(--line); }
.article-shell h2, .final-cta h2, .about h2 { margin: 0 0 25px; font-size: clamp(32px, 4vw, 48px); font-weight: 500; line-height: 1.08; letter-spacing: -.045em; }
.article-shell h2 > span { display: inline-grid; place-items: center; width: 38px; height: 28px; margin-right: 10px; border-radius: 20px; color: var(--green); background: var(--sage); vertical-align: .15em; font-size: 12px; letter-spacing: 0; }
.article-shell h3 { margin: 36px 0 10px; color: var(--green); font-size: 21px; font-weight: 600; }
.article-shell p, .about p { color: #566860; font-size: 17px; line-height: 1.75; }
.principle, .warning { margin: 28px 0 0; padding: 22px 25px; border-left: 4px solid var(--aqua); border-radius: 0 12px 12px 0; color: var(--green); background: #e8f4ef; font-size: 17px; font-weight: 600; line-height: 1.55; }
.warning { border-color: #d49a44; color: #704b1e; background: #fff6e8; font-weight: 400; }
.metric { display: inline-flex; flex-direction: column; margin: 16px 0 28px; padding: 22px 28px; border-radius: 16px; background: var(--sage); }
.metric small { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.metric strong { margin-top: 5px; color: var(--green); font-size: 28px; }
.logic { display: flex; align-items: stretch; flex-wrap: wrap; gap: 9px; }
.logic span { display: grid; place-items: center; flex: 1 1 180px; min-height: 70px; padding: 12px; border: 1px solid #d7e5dd; border-radius: 12px; background: #f1f7f3; color: var(--green); text-align: center; font-weight: 600; }
.logic i { align-self: center; color: var(--aqua); font-style: normal; }
.benchmark { display: flex; flex-direction: column; margin: 28px 0; padding: 32px; border-radius: 20px; color: #fff; background: var(--green); }
.benchmark strong { font-size: clamp(28px, 5vw, 44px); font-weight: 500; }
.benchmark span { margin-top: 5px; color: #b9d6cd; }
.calculation-card { margin: 30px 0; padding: 8px 28px 20px; border: 1px solid #dbe7e0; border-radius: 18px; background: #f5f8f5; }
.calculation-card dl { margin: 0; }
.calculation-card dl div { display: grid; grid-template-columns: .8fr 1.2fr; gap: 20px; padding: 15px 0; border-top: 1px solid var(--line); }
.calculation-card dt { color: var(--muted); }
.calculation-card dd { margin: 0; color: var(--ink); font-weight: 600; }
.calculator-callout { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin: 38px -45px 0; padding: 30px 35px; border-radius: 20px; color: #fff; background: linear-gradient(120deg, var(--green), #238d77); }
.calculator-callout div { display: flex; flex-direction: column; }
.calculator-callout span { margin-top: 5px; color: #c7ded6; font-size: 14px; }
.calculator-callout .button { flex: 0 0 auto; margin: 0; }
.detail-grid, .mistakes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.detail-grid > div, .mistakes article { padding: 5px 23px 20px; border: 1px solid #dfe9e3; border-radius: 14px; background: #f7faf7; }
.detail-grid h3, .mistakes h3 { margin-top: 20px; }
.detail-grid p, .mistakes p { margin-bottom: 0; font-size: 15px; line-height: 1.6; }
.variables { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 28px 0; }
.variables strong { padding: 18px 8px; border-radius: 10px; color: var(--green); background: var(--sage); text-align: center; font-size: 13px; }
.columns { columns: 2; gap: 45px; padding: 0; list-style: none; }
.columns li { break-inside: avoid; padding: 10px 0 10px 22px; border-bottom: 1px solid var(--line); color: #566860; }
.columns li::before { content: "✓"; margin-left: -22px; margin-right: 8px; color: var(--aqua); }
.equation, .choice { display: flex; align-items: center; gap: 10px; margin: 28px 0; }
.equation span, .choice span { flex: 1; padding: 17px; border-radius: 10px; color: var(--green); background: var(--sage); text-align: center; font-weight: 600; }
.equation b, .choice em { color: var(--aqua); font-style: normal; }
.text-cta { display: inline-flex; gap: 10px; color: var(--green); font-weight: 700; text-decoration-thickness: 2px; text-underline-offset: 5px; }
.mistakes article { border-top: 4px solid var(--aqua); }
.sequence { position: relative; display: grid; gap: 8px; margin: 36px 0 30px; padding: 6px 0; counter-reset: steps; list-style: none; }
.sequence::before { content: ""; position: absolute; top: 36px; bottom: 36px; left: 27px; width: 2px; background: linear-gradient(var(--aqua), var(--green)); opacity: .45; }
.sequence li { position: relative; display: flex; align-items: center; min-height: 66px; padding: 14px 22px 14px 76px; border: 1px solid #dfeae4; border-radius: 14px; background: linear-gradient(100deg, #f1f7f3, #f7faf7); color: var(--green); font-weight: 600; box-shadow: 0 5px 16px rgba(7,48,37,.035); counter-increment: steps; }
.sequence li::before { content: counter(steps, decimal-leading-zero); position: absolute; z-index: 2; left: 10px; display: grid; place-items: center; width: 36px; height: 36px; border: 5px solid #fbfcfa; border-radius: 50%; color: var(--green); background: var(--lime); font: 700 10px "Space Grotesk"; }
.sequence li::after { content: ""; position: absolute; left: 54px; width: 13px; height: 1px; background: var(--aqua); }
.sequence li:first-child { background: linear-gradient(100deg, #edf7f2, #f7faf7); }
.sequence li:last-child { border-color: #b8d9ca; color: #fff; background: linear-gradient(110deg, var(--green), #17755f); box-shadow: 0 12px 25px rgba(7,48,37,.13); }
.sequence li:last-child::before { color: #0b342a; background: var(--lime); }
.final-cta { display: grid; grid-template-columns: 1.4fr .8fr; gap: 70px; width: min(1080px, calc(100% - 48px)); margin: 0 auto 80px; padding: 62px; border-radius: 26px; color: #fff; background: linear-gradient(125deg, #073025, #14725c); }
.final-cta h2 { margin-top: 16px; }
.final-cta p { color: #c4d9d2; line-height: 1.65; }
.final-cta .eyebrow { color: var(--lime); }
.review { align-self: end; padding-left: 30px; border-left: 1px solid rgba(255,255,255,.2); }
.about { width: min(820px, calc(100% - 48px)); margin: 0 auto; padding: 15px 0 90px; }
@media (max-width: 920px) {
  .calculator-callout { margin-inline: 0; }
  .variables { grid-template-columns: 1fr 1fr; }
  .final-cta { grid-template-columns: 1fr; gap: 35px; padding: 45px; }
  .review { padding: 30px 0 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.2); }
}
@media (max-width: 600px) {
  .guide-hero { padding: 130px 20px 70px; }
  .guide-hero h1 { font-size: 45px; }
  .article-shell { width: calc(100% - 38px); }
  .author-strip { grid-template-columns: 1fr; width: calc(100% - 38px); margin-top: -24px; }
  .article-shell section { padding: 55px 0; }
  .article-shell h2 { font-size: 32px; }
  .detail-grid, .mistakes { grid-template-columns: 1fr; }
  .logic { flex-direction: column; }
  .logic span { flex-basis: auto; }
  .logic i { transform: rotate(90deg); }
  .calculation-card { padding-inline: 18px; }
  .calculation-card dl div { grid-template-columns: 1fr; gap: 5px; }
  .calculator-callout { align-items: flex-start; flex-direction: column; padding: 25px; }
  .calculator-callout .button { width: 100%; }
  .columns { columns: 1; }
  .equation, .choice { flex-direction: column; align-items: stretch; }
  .sequence li { min-height: 62px; padding-right: 16px; }
  .final-cta { width: 100%; margin-bottom: 65px; padding: 42px 20px; border-radius: 0; }
  .final-cta .button { width: 100%; box-sizing: border-box; text-align: center; }
  .about { width: calc(100% - 40px); }
}