/* ==========================================================================
   FacelessStack — minimal, fast, mobile-first. No external font requests.
   ========================================================================== */

:root {
  --ink:        #10151c;
  --ink-2:      #3d4753;
  --ink-3:      #6b7684;
  --bg:         #ffffff;
  --bg-2:       #f6f8f9;
  --bg-3:       #eef2f4;
  --line:       #dde3e8;
  --accent:     #0f766e;
  --accent-2:   #0b5f59;
  --accent-ink: #ffffff;
  --warn-bg:    #fff8e6;
  --warn-line:  #f0d089;
  --radius:     10px;
  --wrap:       1120px;
  --narrow:     720px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:        #e8edf2;
    --ink-2:      #b0bcc8;
    --ink-3:      #7d8a97;
    --bg:         #0e1116;
    --bg-2:       #161b22;
    --bg-3:       #1c222b;
    --line:       #262d38;
    --accent:     #2dd4bf;
    --accent-2:   #5eead4;
    --accent-ink: #06231f;
    --warn-bg:    #2a2415;
    --warn-line:  #5c4a1c;
  }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); text-decoration: underline; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: var(--narrow); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 62px; gap: 16px;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  font-weight: 700; letter-spacing: -0.01em; color: var(--ink); font-size: 1.06rem;
}
.brand:hover { text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 15px; height: 15px; border-radius: 4px; flex: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav a { color: var(--ink-2); font-size: 0.94rem; font-weight: 500; }
.site-nav a:hover { color: var(--accent); }
.nav-cta {
  background: var(--accent); color: var(--accent-ink) !important;
  padding: 8px 15px; border-radius: 999px; font-weight: 600; white-space: nowrap;
}
.nav-cta:hover { background: var(--accent-2); text-decoration: none; }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  padding: 8px; flex-direction: column; gap: 4px;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px;
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-cta { text-align: center; margin-top: 12px; border-bottom: 0 !important; }
}

/* ---------- hero ---------- */
.hero { padding: 64px 0 56px; border-bottom: 1px solid var(--line); background: var(--bg-2); }

/* Two columns: copy on the left, the affiliate card on the right. Below 900px
   it collapses to one column and the card moves under the copy. */
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px; align-items: center;
}
.hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem); line-height: 1.14;
  letter-spacing: -0.025em; margin: 10px 0 0; max-width: 22ch;
}
.hero-lede { font-size: 1.06rem; color: var(--ink-2); max-width: 52ch; margin: 18px 0 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* ---------- hero affiliate card ---------- */
.hero-card {
  display: block; padding: 20px; border-radius: 14px;
  background: var(--bg); border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(16, 21, 28, 0.04), 0 14px 32px -18px rgba(16, 21, 28, 0.22);
  color: var(--ink); transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.hero-card:hover {
  text-decoration: none; color: var(--ink); border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 1px 2px rgba(16, 21, 28, 0.04), 0 20px 40px -20px rgba(16, 21, 28, 0.3);
}
.hero-card-tag {
  display: inline-block; font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px;
  margin-bottom: 14px;
}

/* the "video" — a gradient frame with a play mark, drawn in CSS */
.hero-shot {
  position: relative; display: flex; align-items: flex-end;
  height: 190px; border-radius: 10px; overflow: hidden;
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(45, 212, 191, 0.38), transparent 62%),
    linear-gradient(152deg, #0f766e 0%, #115e59 42%, #0b3f3c 100%);
}
.hero-shot-play {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -56%);
  width: 0; height: 0;
  border-left: 17px solid rgba(255, 255, 255, 0.92);
  border-top: 10px solid transparent; border-bottom: 10px solid transparent;
}
.hero-shot-cap {
  font-size: 0.72rem; letter-spacing: 0.04em; color: rgba(255, 255, 255, 0.8);
  padding: 10px 12px; font-variant-numeric: tabular-nums;
}

.hero-card-title {
  display: block; margin-top: 16px; font-weight: 650;
  font-size: 1.02rem; line-height: 1.35; letter-spacing: -0.01em; max-width: 34ch;
}

.hero-tier { display: block; margin-top: 14px; }
.hero-tier-row {
  display: flex; align-items: center; gap: 10px; margin-bottom: 7px;
  font-size: 0.8rem; color: var(--ink-2);
}
.hero-tier-name { width: 52px; flex: none; }
.hero-tier-bar {
  flex: 1; height: 7px; border-radius: 4px; background: var(--bg-3); overflow: hidden;
}
/* the fill width is set inline per row; no default here so there is only one
   source of truth for the bar length */
.hero-tier-fill { display: block; height: 100%; border-radius: 4px; background: var(--accent); }
.hero-tier-fill-low { opacity: 0.55; }
.hero-tier-rate {
  width: 50px; flex: none; text-align: right; font-weight: 650;
  color: var(--ink); font-variant-numeric: tabular-nums;
}

.hero-card-note { display: block; margin-top: 4px; font-size: 0.83rem; color: var(--ink-3); }
.hero-card-cta {
  display: inline-block; margin-top: 16px; font-weight: 650; font-size: 0.95rem;
  color: var(--accent);
}
.hero-card:hover .hero-card-cta { color: var(--accent-2); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { max-width: none; }
  .hero-lede { max-width: none; }
  .hero-shot { height: 160px; }
}

.eyebrow {
  font-size: 0.76rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); margin: 0;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  padding: 12px 22px; border-radius: 999px; font-weight: 650; font-size: 0.97rem;
  border: 1px solid transparent; transition: background 0.15s ease;
}
.btn:hover { background: var(--accent-2); color: var(--accent-ink); text-decoration: none; }
.btn-ghost {
  background: transparent; color: var(--ink); border-color: var(--line);
}
.btn-ghost:hover { background: var(--bg-3); color: var(--ink); }

/* ---------- sections & cards ---------- */
.section { padding: 54px 20px; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 26px;
}
.section-head h2 { font-size: 1.45rem; margin: 0; letter-spacing: -0.015em; }
.section-link { font-size: 0.92rem; font-weight: 550; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card-grid-1 { grid-template-columns: 1fr; }
@media (max-width: 900px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .card-grid { grid-template-columns: 1fr; } }

.card {
  display: flex; flex-direction: column; gap: 9px;
  padding: 22px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg); color: var(--ink); transition: border-color 0.15s, transform 0.15s;
}
.card:hover {
  text-decoration: none; color: var(--ink);
  border-color: var(--accent); transform: translateY(-2px);
}
.card-tag {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--accent);
}
.card h3 { margin: 0; font-size: 1.1rem; line-height: 1.35; letter-spacing: -0.01em; }
.card p { margin: 0; font-size: 0.93rem; color: var(--ink-2); flex: 1; }
.card-meta { font-size: 0.82rem; color: var(--ink-3); margin-top: 4px; }

.promise { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.promise h2 { margin: 0 0 22px; font-size: 1.35rem; letter-spacing: -0.015em; }
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
@media (max-width: 820px) { .promise-grid { grid-template-columns: 1fr; } }
.promise-grid h3 { margin: 0 0 6px; font-size: 1rem; }
.promise-grid p { margin: 0; font-size: 0.92rem; color: var(--ink-2); }
.promise-fine {
  margin: 26px 0 0; padding-top: 20px; border-top: 1px solid var(--line);
  font-size: 0.85rem; color: var(--ink-3); max-width: 88ch;
}

/* ---------- 404 ---------- */
.notfound-list {
  margin: 24px 0 30px; padding: 0; list-style: none;
  border-top: 1px solid var(--line);
}
.notfound-list li { border-bottom: 1px solid var(--line); }
.notfound-list a { display: block; padding: 12px 2px; font-weight: 550; }

/* ---------- article ---------- */
.article { padding: 40px 0 64px; }
.breadcrumb { font-size: 0.84rem; color: var(--ink-3); margin-bottom: 22px; }
.breadcrumb a { color: var(--ink-3); }
.breadcrumb span[aria-hidden] { margin: 0 7px; }

.article-head { margin-bottom: 26px; }
.article-head h1 {
  font-size: clamp(1.75rem, 4.4vw, 2.5rem); line-height: 1.18;
  letter-spacing: -0.025em; margin: 10px 0 0;
}
.lede { font-size: 1.09rem; color: var(--ink-2); margin: 16px 0 0; }

.byline {
  display: flex; flex-wrap: wrap; align-items: center; gap: 7px;
  font-size: 0.86rem; color: var(--ink-3); margin-top: 20px;
  padding-top: 18px; border-top: 1px solid var(--line);
}
.byline a { color: var(--ink-3); }
.dot { color: var(--line); }

.archive-head { margin-bottom: 30px; }
.archive-head h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); letter-spacing: -0.025em; margin: 10px 0 0; }

/* prose */
.article h2 {
  font-size: 1.42rem; letter-spacing: -0.018em; line-height: 1.3;
  margin: 44px 0 14px; scroll-margin-top: 80px;
}
.article h3 { font-size: 1.14rem; letter-spacing: -0.01em; margin: 30px 0 10px; }
.article p { margin: 0 0 17px; }
.article ul, .article ol { margin: 0 0 18px; padding-left: 22px; }
.article li { margin-bottom: 8px; }
.article li::marker { color: var(--ink-3); }
.article strong { font-weight: 680; color: var(--ink); }
.article code {
  font-family: var(--mono); font-size: 0.88em;
  background: var(--bg-3); padding: 2px 6px; border-radius: 5px;
}
.article pre {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; overflow-x: auto; margin: 0 0 20px;
}
.article pre code { background: none; padding: 0; font-size: 0.86rem; line-height: 1.6; }
.article hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }

.article blockquote {
  margin: 0 0 22px; padding: 18px 22px;
  border-left: 3px solid var(--accent); background: var(--bg-2);
  border-radius: 0 var(--radius) var(--radius) 0; color: var(--ink-2);
}
.article blockquote p:last-child { margin-bottom: 0; }

/* tables */
.table-wrap { overflow-x: auto; margin: 0 0 24px; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; min-width: 480px; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); }
th { background: var(--bg-2); font-weight: 650; font-size: 0.86rem; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }

/* ---------- article furniture ---------- */
.tldr {
  margin: 0 0 26px !important; padding: 18px 22px !important;
  background: var(--bg-2) !important; border: 1px solid var(--line) !important;
  border-left: 3px solid var(--accent) !important;
  border-radius: 0 var(--radius) var(--radius) 0 !important;
  font-size: 0.98rem; color: var(--ink-2);
}
.tldr strong { color: var(--ink); }

.disclosure {
  font-size: 0.85rem; line-height: 1.6; color: var(--ink-3);
  background: var(--warn-bg); border: 1px solid var(--warn-line);
  border-radius: var(--radius); padding: 13px 16px; margin: 0 0 28px;
}
.disclosure strong { color: var(--ink-2); }

.cta-box {
  margin: 48px 0 0; padding: 30px; text-align: center;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius);
}
.cta-box h2 { margin: 0 0 12px; font-size: 1.28rem; letter-spacing: -0.015em; }
.cta-box p { margin: 0 0 20px; color: var(--ink-2); font-size: 0.96rem; max-width: 54ch; margin-inline: auto; }
.cta-fine { font-size: 0.8rem !important; color: var(--ink-3) !important; margin: 14px 0 0 !important; }

.related { margin-top: 56px; padding-top: 34px; border-top: 1px solid var(--line); }
.related h2 { font-size: 1.2rem; margin: 0 0 20px; }

/* ---------- footer ---------- */
.site-footer {
  margin-top: 60px; padding: 44px 0 34px;
  background: var(--bg-2); border-top: 1px solid var(--line);
  font-size: 0.9rem;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; margin-bottom: 30px;
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand { font-weight: 700; color: var(--ink); margin: 0 0 6px; }
.footer-note { color: var(--ink-3); margin: 0; max-width: 36ch; font-size: 0.86rem; }
.footer-head {
  font-size: 0.76rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-3); margin: 0 0 10px;
}
.site-footer a { display: block; color: var(--ink-2); padding: 4px 0; }
.site-footer a:hover { color: var(--accent); }
.footer-fine {
  border-top: 1px solid var(--line); padding-top: 22px; margin: 0;
  font-size: 0.8rem; color: var(--ink-3); max-width: 78ch;
}

/* ---------- misc ---------- */
.notice {
  background: var(--bg-2); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px; margin: 0 0 24px; font-size: 0.95rem; color: var(--ink-2);
}
.notice strong { color: var(--ink); }

@media print {
  .site-header, .site-footer, .cta-box, .related, .disclosure { display: none; }
}