:root {
  color-scheme: dark;
  --page-bg: #080b0f;
  --panel: #10151b;
  --panel-soft: #0d1217;
  --text: #f4f7f2;
  --muted: #9ba5af;
  --line: rgba(255,255,255,.1);
  --accent: #91fc72;
  --accent-soft: rgba(145,252,114,.1);
  --blue: #68d8ff;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--text);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 18% -5%,rgba(145,252,114,.08),transparent 28%),radial-gradient(circle at 92% 12%,rgba(104,216,255,.07),transparent 24%),var(--page-bg); }
a { color: inherit; text-decoration: none; }
p { color: var(--muted); line-height: 1.85; }
.public-nav { width: min(1120px,calc(100% - 40px)); min-height: 76px; display: flex; align-items: center; gap: 28px; margin: 0 auto; border-bottom: 1px solid var(--line); }
.public-brand { display: flex; align-items: center; gap: 11px; margin-right: auto; font-weight: 800; letter-spacing: -.02em; }
.public-brand::before { content: "AL"; width: 35px; height: 35px; display: grid; place-items: center; border-radius: 10px; color: #071006; background: linear-gradient(135deg,#c9ff8f,var(--accent)); font-size: 11px; letter-spacing: -.04em; }
.public-brand span { display: block; margin-top: 2px; color: #7f8994; font-size: 9px; font-weight: 600; letter-spacing: .08em; }
.public-links { display: flex; align-items: center; gap: 24px; color: #a9b2bc; font-size: 13px; }
.public-links a:hover,.public-links a[aria-current="page"] { color: var(--text); }
.public-cta { min-height: 39px; display: inline-flex; align-items: center; padding: 0 16px; border-radius: 10px; color: #071006; background: var(--accent); font-size: 12px; font-weight: 800; }
.article-shell { width: min(940px,calc(100% - 40px)); margin: 0 auto; padding: 38px 0 100px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; color: #737d87; font-size: 12px; }
.breadcrumb a:hover { color: var(--accent); }
.article-hero { padding: 70px 0 64px; border-bottom: 1px solid var(--line); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.article-hero h1 { max-width: 850px; margin: 20px 0 0; font-size: clamp(42px,7vw,72px); line-height: 1.08; letter-spacing: -.055em; }
.article-hero > p { max-width: 760px; margin: 25px 0 0; font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }
.button-primary,.button-secondary { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; padding: 0 20px; border-radius: 12px; font-size: 13px; font-weight: 800; }
.button-primary { color: #071006; background: var(--accent); }
.button-secondary { border: 1px solid var(--line); background: rgba(255,255,255,.025); }
.hero-points { display: flex; flex-wrap: wrap; gap: 9px; margin: 28px 0 0; padding: 0; list-style: none; }
.hero-points li { padding: 8px 11px; border: 1px solid rgba(145,252,114,.16); border-radius: 999px; color: #b9c3bc; background: var(--accent-soft); font-size: 11px; }
.article-body { display: grid; grid-template-columns: minmax(0,1fr) 210px; gap: 70px; padding-top: 58px; }
.article-content { min-width: 0; }
.article-content section { scroll-margin-top: 24px; padding: 10px 0 54px; border-bottom: 1px solid var(--line); }
.article-content section:last-child { border-bottom: 0; }
.article-content h2 { margin: 0; font-size: clamp(28px,4vw,39px); line-height: 1.2; letter-spacing: -.035em; }
.article-content h3 { margin: 30px 0 0; font-size: 18px; }
.article-content p { margin: 15px 0 0; }
.article-content strong { color: #edf2eb; }
.article-content ul,.article-content ol { display: grid; gap: 12px; margin: 20px 0 0; padding-left: 22px; color: #b2bbc4; line-height: 1.75; }
.article-content li::marker { color: var(--accent); font-weight: 800; }
.article-aside { align-self: start; position: sticky; top: 24px; padding: 19px; border: 1px solid var(--line); border-radius: 16px; background: rgba(13,18,23,.9); }
.article-aside strong { font-size: 12px; }
.article-aside nav { display: grid; gap: 12px; margin-top: 15px; color: #87919c; font-size: 11px; line-height: 1.5; }
.article-aside a:hover { color: var(--accent); }
.card-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-top: 24px; }
.info-card { min-height: 175px; padding: 22px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(145deg,rgba(17,23,29,.96),rgba(12,17,22,.96)); }
.info-card span { color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.info-card h3 { margin: 18px 0 0; font-size: 18px; }
.info-card p { margin-top: 9px; font-size: 13px; }
.step-list { display: grid; gap: 13px; margin-top: 24px; counter-reset: step; }
.step { position: relative; min-height: 128px; padding: 22px 22px 22px 75px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel-soft); counter-increment: step; }
.step::before { content: counter(step,decimal-leading-zero); position: absolute; top: 22px; left: 22px; color: var(--accent); font-size: 18px; font-weight: 900; }
.step h3 { margin: 0; }
.step p { margin-top: 8px; font-size: 13px; }
.comparison { width: 100%; margin-top: 24px; border-collapse: collapse; border: 1px solid var(--line); background: var(--panel-soft); font-size: 13px; }
.comparison th,.comparison td { padding: 15px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.65; }
.comparison th { color: #e8eee8; background: rgba(255,255,255,.025); }
.comparison td { color: #a8b1ba; }
.comparison tr:last-child td { border-bottom: 0; }
.answer-example { margin-top: 24px; padding: 25px; border: 1px solid rgba(104,216,255,.17); border-radius: 17px; background: rgba(104,216,255,.045); }
.answer-example > strong { display: block; color: var(--blue); font-size: 13px; }
.answer-example dl { display: grid; grid-template-columns: 110px 1fr; margin: 20px 0 0; }
.answer-example dt,.answer-example dd { margin: 0; padding: 13px 0; border-top: 1px solid var(--line); line-height: 1.75; }
.answer-example dt { color: var(--accent); font-size: 12px; font-weight: 900; }
.answer-example dd { color: #b5bec7; font-size: 13px; }
.faq-list { display: grid; gap: 10px; margin-top: 24px; }
.faq-list details { padding: 0 18px; border: 1px solid var(--line); border-radius: 13px; background: var(--panel-soft); }
.faq-list summary { padding: 17px 0; cursor: pointer; color: #e8eee8; font-size: 14px; font-weight: 750; }
.faq-list details p { margin: -2px 0 18px; font-size: 13px; }
.article-cta { margin-top: 32px; padding: 34px; border: 1px solid rgba(145,252,114,.2); border-radius: 20px; background: radial-gradient(circle at 100% 0,rgba(145,252,114,.11),transparent 38%),#10161a; }
.article-cta h2 { font-size: 30px; }
.article-cta p { max-width: 650px; }
.public-footer { width: min(1120px,calc(100% - 40px)); display: flex; flex-wrap: wrap; align-items: center; gap: 15px 28px; margin: 0 auto; padding: 28px 0 42px; border-top: 1px solid var(--line); color: #6e7882; font-size: 11px; }
.public-footer strong { margin-right: auto; color: #dbe1dc; font-size: 13px; }
.public-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.public-footer a:hover { color: var(--accent); }
@media (max-width: 820px) {
  .public-links { display: none; }
  .article-body { grid-template-columns: 1fr; }
  .article-aside { display: none; }
}
@media (max-width: 620px) {
  .public-nav,.article-shell,.public-footer { width: calc(100% - 28px); }
  .public-nav { min-height: 68px; gap: 12px; }
  .public-brand span { display: none; }
  .public-cta { padding: 0 12px; }
  .article-shell { padding-top: 26px; }
  .article-hero { padding: 48px 0; }
  .article-hero h1 { font-size: 42px; }
  .article-hero > p { font-size: 15px; }
  .article-body { padding-top: 36px; }
  .card-grid { grid-template-columns: 1fr; }
  .step { padding-left: 62px; }
  .answer-example dl { grid-template-columns: 1fr; }
  .answer-example dd { padding-top: 5px; border-top: 0; }
  .comparison { display: block; overflow-x: auto; }
  .article-cta { padding: 25px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }