/* FootballWise - layout: sticky left index rail + document column */
:root {
  --ink: #12261f;
  --ink-soft: #1d3a30;
  --paper: #f4f6f2;
  --paper-2: #e9eee6;
  --line: #cdd7c9;
  --lime: #c8f04a;
  --lime-deep: #8fb421;
  --muted: #5a6b60;
  --radius: 2px;
  --rail: 250px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

img { max-width: 100%; display: block; height: auto; }

a { color: var(--ink-soft); text-decoration: none; }
a:hover { color: var(--lime-deep); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 3px solid var(--lime);
}
.head-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--paper); font-weight: 700; letter-spacing: .02em; }
.brand img { width: 34px; height: 34px; border-radius: var(--radius); }
.brand span small { display: block; font-size: 11px; font-weight: 400; color: #9fb3a5; letter-spacing: .12em; text-transform: uppercase; }
.nav-toggle {
  margin-left: auto;
  background: transparent;
  border: 1px solid #3d5a4d;
  color: var(--paper);
  padding: 7px 12px;
  font-size: 14px;
  border-radius: var(--radius);
  cursor: pointer;
  display: none;
}
.nav-toggle:active { transform: translateY(1px); }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.main-nav a {
  display: block;
  padding: 8px 11px;
  color: #d7e2d9;
  font-size: 14.5px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: #fff; border-bottom-color: var(--lime); }
.main-nav a.is-active { color: var(--lime); border-bottom-color: var(--lime); }

/* ---------- layout ---------- */
.shell {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: 40px;
  padding: 32px 0 56px;
}

.rail { position: sticky; top: 92px; align-self: start; }
.related-aside {
  margin: 40px 0 0;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 4px solid var(--ink);
  border-radius: var(--radius);
}
.related-aside .related-title { font-weight: 700; margin: 0 0 12px; font-size: 1.05rem; }
.related-aside ul { margin: 0; padding-left: 18px; }
.related-aside li { margin-bottom: 9px; font-size: 14.5px; }
.related-aside li a { text-decoration: underline; text-underline-offset: 3px; }
.rail h2 {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.rail ol { list-style: none; margin: 0 0 26px; padding: 0; counter-reset: idx; }
.rail ol li { counter-increment: idx; border-bottom: 1px dashed var(--line); }
.rail ol li a {
  display: flex;
  gap: 10px;
  padding: 9px 0;
  font-size: 14.5px;
  line-height: 1.45;
}
.rail ol li a::before {
  content: counter(idx, decimal-leading-zero);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--lime-deep);
  padding-top: 3px;
}
.rail .rail-note { font-size: 13px; color: var(--muted); line-height: 1.6; }
.rail dl { margin: 0; font-size: 13.5px; }
.rail dt { color: var(--muted); font-size: 12px; letter-spacing: .08em; margin-top: 10px; }
.rail dd { margin: 2px 0 0; }

/* ---------- typography ---------- */
h1 {
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0 0 16px;
  font-weight: 800;
}
h2 { font-size: 1.42rem; line-height: 1.35; margin: 40px 0 14px; }
h3 { font-size: 1.1rem; margin: 26px 0 10px; }
p { margin: 0 0 16px; }
.lede { font-size: 1.08rem; color: var(--ink-soft); }
.muted { color: var(--muted); }
.kicker {
  display: inline-block;
  background: var(--lime);
  color: var(--ink);
  font-size: 12px;
  letter-spacing: .14em;
  padding: 3px 9px;
  margin-bottom: 16px;
  border-radius: var(--radius);
}
.meta-line { font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 0 0 22px; }

/* ---------- home ---------- */
.hero-block { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 8px; }
.hero-figure { margin: 0; }
.hero-figure img { width: 100%; border-radius: var(--radius); }
.hero-figure figcaption { font-size: 12.5px; color: var(--muted); padding-top: 8px; }

section { scroll-margin-top: 90px; }
.sec-head { display: flex; align-items: baseline; gap: 14px; border-bottom: 2px solid var(--ink); padding-bottom: 10px; margin: 46px 0 20px; }
.sec-head h2 { margin: 0; font-size: 1.28rem; }
.sec-head span { font-size: 12px; color: var(--muted); letter-spacing: .1em; margin-left: auto; }

.feat-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; }
.feat-main img { width: 100%; border-radius: var(--radius); }
.feat-main h3 { margin: 12px 0 6px; font-size: 1.24rem; }
.feat-side { display: grid; gap: 18px; align-content: start; }
.feat-side article { display: grid; grid-template-columns: 96px 1fr; gap: 12px; align-items: start; }
.feat-side img { width: 96px; height: 72px; object-fit: cover; border-radius: var(--radius); }
.feat-side h3 { margin: 0 0 4px; font-size: 1rem; line-height: 1.4; }
.feat-side p { margin: 0; font-size: 13px; color: var(--muted); }

.index-list { list-style: none; margin: 0; padding: 0; }
.index-list li { display: grid; grid-template-columns: 76px minmax(0,1fr); gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.index-list .num { font-variant-numeric: tabular-nums; font-size: 12px; color: var(--lime-deep); padding-top: 4px; }
.index-list h3 { margin: 0 0 4px; font-size: 1.05rem; }
.index-list p { margin: 0; font-size: 14px; color: var(--muted); }

.cat-strip { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.cat-card { border: 1px solid var(--line); background: #fff; padding: 16px; border-radius: var(--radius); }
.cat-card h3 { margin: 0 0 6px; font-size: 1rem; }
.cat-card p { margin: 0; font-size: 13.5px; color: var(--muted); }

.split-note { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr); gap: 28px; align-items: center; }
.split-note img { border-radius: var(--radius); }
.pull { border-left: 4px solid var(--lime); padding: 4px 0 4px 18px; font-size: 1.1rem; color: var(--ink-soft); }

.method-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0 32px; }
.method-grid div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.method-grid h3 { margin: 0 0 4px; font-size: 1rem; }
.method-grid p { margin: 0; font-size: 14px; color: var(--muted); }

.tile-row { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.tile-row figure { margin: 0; }
.tile-row img { border-radius: var(--radius); }
.tile-row figcaption { font-size: 13px; color: var(--muted); padding-top: 6px; }

/* ---------- article ---------- */
.crumbs { font-size: 13px; color: var(--muted); margin: 0 0 20px; }
.crumbs a { color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; }
.crumbs span { margin: 0 6px; }

.article-body { max-width: 72ch; }
.article-body figure { margin: 26px 0; }
.article-body figure img { border-radius: var(--radius); }
.article-body figcaption { font-size: 13px; color: var(--muted); padding-top: 8px; }
.article-body blockquote {
  margin: 24px 0;
  padding: 14px 18px;
  background: var(--paper-2);
  border-left: 4px solid var(--lime-deep);
  font-size: 15px;
}
.article-body table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 22px 0; }
.article-body th, .article-body td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.article-body th { background: var(--paper-2); font-weight: 600; }

.aside-box {
  margin: 40px 0 0;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 4px solid var(--ink);
  border-radius: var(--radius);
}
.aside-box h2 { margin: 0 0 12px; font-size: 1.05rem; }
.aside-box ul { margin: 0; padding-left: 18px; }
.aside-box li { margin-bottom: 9px; font-size: 14.5px; }
.aside-box li a { text-decoration: underline; text-underline-offset: 3px; }

.faq dt { font-weight: 600; margin-top: 16px; }
.faq dd { margin: 4px 0 0; color: var(--ink-soft); font-size: 15px; }

.back-cat { margin-top: 26px; font-size: 14px; }

/* ---------- category ---------- */
.cat-hero { display: grid; grid-template-columns: minmax(0,1fr) 220px; gap: 20px; align-items: end; margin-bottom: 8px; }
.cat-hero img { border-radius: var(--radius); }
.cat-list { list-style: none; padding: 0; margin: 22px 0 0; }
.cat-list li { padding: 18px 0; border-top: 1px solid var(--line); }
.cat-list h3 { margin: 0 0 5px; font-size: 1.12rem; }
.cat-list .meta-line { margin: 0; }

/* ---------- footer ---------- */
.site-foot { background: var(--ink); color: #c3d2c7; padding: 44px 0 30px; font-size: 14px; border-top: 3px solid var(--lime); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
.site-foot h2 { font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--lime); margin: 0 0 10px; }
.site-foot a { color: #dbe6dd; }
.site-foot a:hover { color: var(--lime); }
.site-foot ul { list-style: none; margin: 0; padding: 0; }
.site-foot li { margin-bottom: 6px; }
.foot-legal { margin-top: 28px; padding-top: 16px; border-top: 1px solid #2c443a; font-size: 13px; color: #9fb3a5; line-height: 1.9; }

@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; gap: 26px; }
  .rail { position: static; order: 2; }
  .feat-grid, .split-note, .cat-hero { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  body { font-size: 15.5px; }
  .wrap { padding: 0 16px; }
  .nav-toggle { display: inline-block; }
  .main-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 71px;
    background: var(--ink);
    border-bottom: 3px solid var(--lime);
    padding: 8px 16px 14px;
  }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav a { padding: 11px 4px; border-bottom: 1px solid #2c443a; }
  .head-inner { position: relative; min-height: 0; padding: 12px 0; flex-wrap: wrap; }
  .cat-strip, .method-grid, .tile-row, .foot-grid { grid-template-columns: 1fr; }
  .feat-side article { grid-template-columns: 80px 1fr; }
  .index-list li { grid-template-columns: 52px minmax(0,1fr); }
  .sec-head { flex-wrap: wrap; }
  .article-body { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}