:root {
  color-scheme: dark;
  --bg: #08110f;
  --bg-deep: #050b0a;
  --surface: #10211b;
  --surface-soft: #132a21;
  --line: #29443a;
  --line-bright: #446b55;
  --text: #f2fbf7;
  --muted: #a6bbb1;
  --mint: #61efb8;
  --lime: #b7ef3f;
  --amber: #ffd481;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; background: var(--bg-deep); }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 87% 7%, rgba(54, 213, 207, .11), transparent 25rem),
    radial-gradient(circle at 6% 27%, rgba(183, 239, 63, .05), transparent 20rem),
    var(--bg);
  font: 16px/1.72 Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--mint); }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--lime); outline-offset: 4px; border-radius: 4px; }
img { max-width: 100%; }
.shell { width: min(1180px, calc(100% - 44px)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 10; top: -5rem; left: 1rem; padding: .65rem 1rem; color: #092219; background: var(--lime); border-radius: 8px; font-weight: 800; }
.skip-link:focus { top: 1rem; }

.site-header { border-bottom: 1px solid rgba(97, 239, 184, .14); background: rgba(5, 13, 11, .78); }
.header-inner { display: flex; align-items: center; gap: 30px; min-height: 82px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; color: var(--text); font-size: 22px; font-weight: 900; letter-spacing: .06em; line-height: 1.05; }
.brand:hover { color: var(--text); }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.brand small { display: block; margin-top: 4px; color: var(--mint); font-size: 9px; font-weight: 750; letter-spacing: .19em; }
.top-nav { display: flex; align-items: center; gap: 25px; margin-left: auto; color: #b7cdc1; font-size: 14px; font-weight: 650; white-space: nowrap; }
.header-cta { padding: 10px 14px; border: 1px solid rgba(183, 239, 63, .45); border-radius: 10px; color: #dbff9d; font-size: 13px; font-weight: 800; white-space: nowrap; }
.header-cta:hover { color: #092319; background: var(--lime); }
.header-cta span { margin-left: 5px; }
.breadcrumbs { display: flex; align-items: center; gap: 10px; padding-top: 25px; color: #8da79a; font-size: 12px; }
.breadcrumbs a { color: #b3d7c4; }

.hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(315px, .85fr); align-items: center; gap: 58px; padding: 68px 0 75px; }
.hero-copy { min-width: 0; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--mint); font-size: 11px; font-weight: 850; letter-spacing: .16em; }
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 5px rgba(183, 239, 63, .1); }
h1, h2, h3, p { overflow-wrap: anywhere; }
.hero h1 { margin: 0 0 23px; font-size: clamp(38px, 5vw, 65px); line-height: 1.18; letter-spacing: -.048em; }
.hero h1 em { color: var(--lime); font-style: normal; }
.lead { max-width: 700px; margin: 0; color: #c4d8cb; font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 33px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 47px; padding: 10px 19px; border: 1px solid transparent; border-radius: 11px; font-size: 14px; font-weight: 850; text-align: center; }
.button-primary { color: #09251b; background: linear-gradient(110deg, var(--lime), var(--mint)); box-shadow: 0 14px 36px rgba(97, 239, 184, .13); }
.button-primary:hover { color: #09251b; filter: brightness(1.08); }
.button-secondary { border-color: #426251; color: #d6f0df; background: rgba(19, 45, 33, .7); }
.button-secondary:hover { border-color: var(--mint); background: #193c2a; }
.microcopy { margin: 18px 0 0; color: #8eaa9a; font-size: 12px; }
.hero-card, .resource-visual { position: relative; overflow: hidden; border: 1px solid #3b6551; border-radius: 24px; background: linear-gradient(146deg, #17392a, #0b1c16 80%); box-shadow: 0 25px 65px rgba(0, 0, 0, .22); }
.hero-card::before, .resource-visual::before { content: ""; position: absolute; right: -54px; top: -80px; width: 230px; height: 230px; border-radius: 50%; background: radial-gradient(circle, rgba(97, 239, 184, .13), transparent 70%); pointer-events: none; }
.hero-card { padding: 27px 28px; }
.card-kicker { color: #98eabb; font-size: 11px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.check-list { display: grid; gap: 0; margin: 17px 0 16px; padding: 0; list-style: none; }
.check-list li { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 12px; padding: 17px 0; border-bottom: 1px solid rgba(145, 217, 174, .17); }
.check-list li span { color: var(--lime); font: 800 15px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
.check-list strong { font-size: 16px; }
.check-list p { margin: 4px 0 0; color: #a8c4b3; font-size: 13px; line-height: 1.6; }
.hero-card > a { display: inline-block; color: var(--lime); font-size: 13px; font-weight: 800; }
.guide-live-prices { margin-top: 22px; padding-top: 20px; border-top: 1px solid rgba(145, 217, 174, .25); }
.guide-live-prices > div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(145, 217, 174, .12); color: #c8e5d1; font-size: 13px; }
.guide-live-prices strong { color: var(--lime); font-size: 14px; text-align: right; }
.guide-live-prices p { margin: 12px 0 0; color: #9ebba9; font-size: 11px; line-height: 1.65; }
.guide-live-prices a { color: var(--lime); text-decoration: underline; text-underline-offset: 3px; }
.resource-visual { padding: 30px; }
.resource-row { display: flex; align-items: center; gap: 17px; margin-top: 23px; padding: 17px; border: 1px solid #3c6650; border-radius: 15px; background: rgba(4, 20, 14, .46); }
.resource-symbol { display: grid; place-items: center; flex: 0 0 43px; width: 43px; height: 43px; border-radius: 13px; color: #0b291d; background: #b7ef3f; font-size: 24px; font-weight: 800; }
.resource-symbol-green { background: #61efb8; }
.resource-row strong { display: block; font-size: 17px; }
.resource-row small { display: block; margin-top: 1px; color: #a7c4b4; font-size: 12px; }
.visual-plus { margin: 8px 0 -15px; color: #8fc9a6; font-size: 19px; text-align: center; }
.visual-foot { margin-top: 24px; padding-top: 18px; border-top: 1px solid #3b604e; color: #bbdac4; font-size: 13px; }

.section-band { border-top: 1px solid rgba(97, 239, 184, .12); border-bottom: 1px solid rgba(97, 239, 184, .12); background: rgba(6, 24, 17, .66); }
.quick-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.quick-facts div { display: grid; gap: 2px; padding: 20px 26px; border-right: 1px solid #28483a; }
.quick-facts div:first-child { padding-left: 0; }
.quick-facts div:last-child { border-right: 0; }
.quick-facts b { color: #d4ffa2; font-size: 16px; }
.quick-facts span { color: #96b2a3; font-size: 12px; }

.page-grid { display: grid; grid-template-columns: minmax(0, 770px) minmax(225px, 1fr); gap: 72px; padding-top: 74px; padding-bottom: 95px; }
.prose section { scroll-margin-top: 24px; margin-bottom: 77px; }
.prose section:last-of-type { margin-bottom: 44px; }
.section-label { margin: 0 0 10px !important; color: var(--mint) !important; font-size: 11px !important; font-weight: 850; letter-spacing: .18em; }
.prose h2 { margin: 0 0 20px; font-size: clamp(26px, 3vw, 36px); line-height: 1.33; letter-spacing: -.035em; }
.prose h3 { line-height: 1.45; }
.prose p { margin: 0 0 18px; color: #b5cbbd; line-height: 1.87; }
.prose strong { color: #f0fcf2; }
.prose a { color: #a5f3bb; border-bottom: 1px solid rgba(165, 243, 187, .4); }
.prose a:hover { color: #d5ffa1; border-color: currentColor; }
.choice-grid, .compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 26px 0; }
.choice-card, .compare-grid > div { padding: 23px; border: 1px solid #345341; border-radius: 17px; background: linear-gradient(145deg, #132b21, #0c1c16); }
.choice-icon { color: var(--lime); font-size: 24px; }
.choice-card h3, .compare-grid h3 { margin: 9px 0; font-size: 18px; }
.choice-card p, .compare-grid p { margin-bottom: 0; font-size: 14px; }
.compare-tag { color: var(--lime); font-size: 11px; font-weight: 850; letter-spacing: .1em; }
.callout { margin: 27px 0; padding: 20px 23px; border: 1px solid #557347; border-left: 4px solid var(--lime); border-radius: 0 13px 13px 0; background: #192919; }
.callout strong { display: block; margin-bottom: 6px; color: #e0ffab; }
.callout p { margin: 0; font-size: 14px; }
.callout-warning { border-color: #795f35; border-left-color: var(--amber); background: #292418; }
.callout-warning strong { color: #ffe0a3; }
.callout-warning p { color: #e1d2b7; }
.steps { display: grid; gap: 0; padding: 0; margin: 23px 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 57px minmax(0, 1fr); gap: 14px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.steps li:first-child { border-top: 1px solid var(--line); }
.step-no { color: var(--lime); font: 850 20px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
.steps h3 { margin: 1px 0 5px; font-size: 17px; }
.steps p { margin: 0; font-size: 14px; }
.faq-list { display: grid; gap: 10px; margin-top: 26px; }
.faq-list details { border: 1px solid #345141; border-radius: 13px; background: #0e2018; }
.faq-list summary { padding: 16px 19px; color: #e8faeb; font-size: 15px; font-weight: 750; cursor: pointer; }
.faq-list details[open] summary { border-bottom: 1px solid #345141; }
.faq-list details p { padding: 16px 19px 18px; margin: 0; font-size: 14px; }
.sources { padding: 21px 23px; border-top: 1px solid #355241; background: rgba(13, 32, 23, .54); }
.sources h2 { margin: 0 0 7px; font-size: 15px; letter-spacing: 0; }
.sources p { margin: 0; color: #a2b9a9; font-size: 12px; line-height: 1.8; }
.side-rail { min-width: 0; }
.sticky-panel { position: sticky; top: 24px; padding: 25px; border: 1px solid #345141; border-radius: 17px; background: #0d1e16; }
.rail-title { color: #ecfbea; font-size: 15px; font-weight: 800; }
.sticky-panel nav { display: grid; gap: 3px; margin: 15px 0 26px; }
.sticky-panel nav a { padding: 9px 0; border-bottom: 1px solid rgba(149, 204, 166, .12); color: #a8c2ad; font-size: 13px; }
.sticky-panel nav a:hover { color: var(--lime); }
.rail-cta { padding: 19px; border: 1px solid #436849; border-radius: 12px; background: #1a3320; }
.rail-cta strong { color: #eaffd2; }
.rail-cta p { margin: 7px 0 15px; color: #b2c9b1; font-size: 13px; }
.rail-cta a { color: var(--lime); font-size: 13px; font-weight: 850; }

.bottom-cta { border-top: 1px solid #396644; border-bottom: 1px solid #396644; background: radial-gradient(circle at 87% 0, rgba(97, 239, 184, .12), transparent 26rem), #10251b; }
.bottom-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 35px; padding-block: 47px; }
.bottom-cta span { color: var(--mint); font-size: 10px; font-weight: 850; letter-spacing: .16em; }
.bottom-cta h2 { max-width: 720px; margin: 8px 0 5px; font-size: clamp(24px, 3vw, 35px); line-height: 1.35; }
.bottom-cta p { margin: 0; color: #b4cbb9; font-size: 14px; }
.bottom-cta .button { flex-shrink: 0; }
.site-footer { background: #050d0a; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; padding-block: 34px; }
.footer-brand { color: #dffbe1; font-weight: 850; letter-spacing: .05em; }
.site-footer p { margin: 5px 0 0; color: #8ca699; font-size: 12px; }
.site-footer nav { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; color: #a9c4b2; font-size: 13px; }

@media (max-width: 920px) {
  .header-inner { gap: 18px; }
  .top-nav { gap: 14px; }
  .hero { grid-template-columns: minmax(0, 1.2fr) minmax(285px, .8fr); gap: 30px; }
  .page-grid { grid-template-columns: minmax(0, 1fr) 220px; gap: 38px; }
}
@media (max-width: 720px) {
  .shell { width: min(100% - 32px, 600px); }
  .header-inner { flex-wrap: wrap; gap: 11px; padding-block: 13px; }
  .brand { margin-right: auto; font-size: 20px; }
  .brand img { width: 36px; height: 36px; }
  .header-cta { font-size: 12px; }
  .top-nav { order: 3; width: 100%; gap: 20px; margin-left: 0; overflow-x: auto; padding-bottom: 2px; font-size: 12px; }
  .breadcrumbs { padding-top: 18px; }
  .hero { grid-template-columns: 1fr; gap: 35px; padding: 42px 0 46px; }
  .hero h1 { font-size: clamp(35px, 10vw, 48px); }
  .lead { font-size: 16px; }
  .hero-card, .resource-visual { padding: 24px; }
  .quick-facts { grid-template-columns: 1fr; }
  .quick-facts div, .quick-facts div:first-child { padding: 13px 0; border-right: 0; border-bottom: 1px solid #28483a; }
  .quick-facts div:last-child { border-bottom: 0; }
  .page-grid { display: block; padding-top: 49px; padding-bottom: 65px; }
  .side-rail { display: none; }
  .prose section { margin-bottom: 57px; }
  .bottom-cta-inner { display: grid; gap: 23px; padding-block: 38px; }
  .bottom-cta .button { justify-self: start; }
  .footer-inner { display: grid; }
}
@media (max-width: 480px) {
  .hero-actions { display: grid; }
  .choice-grid, .compare-grid { grid-template-columns: 1fr; }
  .steps li { grid-template-columns: 43px minmax(0, 1fr); gap: 10px; }
  .step-no { font-size: 17px; }
  .callout { padding: 17px; }
  .site-footer nav { gap: 15px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }