/* ============================================================
   Durable Objects — superior landing page
   Design system: genuine Cloudflare assets (Kunst Grotesk,
   icons sprite, pattern.png) + original layout/diagrams.
   ============================================================ */

@font-face {
  font-family: "Kunst Grotesk";
  src: url("../fonts/KunstGrotesk-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Kunst Grotesk";
  src: url("../fonts/KunstGrotesk-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Mono";
  /* System monospace stack: zero download, consistent enough */
  src: local("SFMono-Regular"), local("Menlo"), local("Consolas"), local("Liberation Mono");
  font-weight: 400;
  font-display: swap;
}

:root {
  --orange: #f6821f;
  --orange-600: #d96d10;
  --orange-100: #fde8d4;
  --orange-050: #fff6ee;
  --ink: #17181c;
  --ink-2: #34363d;
  --muted: #5c6068;
  --faint: #8b8f97;
  --line: #e6e7eb;
  --line-2: #d4d6dc;
  --bg: #ffffff;
  --bg-soft: #f7f7f9;
  --bg-tint: #fbf7f2;
  --card: #ffffff;
  --dark: #131418;
  --dark-2: #1c1e24;
  --green: #1a7f4b;
  --green-bg: #ecf7f0;
  --red: #c23a2b;
  --red-bg: #fbeeec;
  --blue: #0b5cad;
  --code-bg: #101116;
  --code-ink: #e8eaf0;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-1: 0 1px 2px rgba(23, 24, 28, 0.05), 0 4px 16px rgba(23, 24, 28, 0.06);
  --shadow-2: 0 2px 6px rgba(23, 24, 28, 0.08), 0 16px 40px rgba(23, 24, 28, 0.12);
  --wrap: 1200px;
  --mono: "Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Kunst Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3, h4 { color: var(--ink); font-weight: 500; letter-spacing: -0.015em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.45rem, 5.2vw, 4rem); line-height: 1.05; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.65rem); line-height: 1.12; }
h3 { font-size: 1.3rem; line-height: 1.3; }
h4 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
strong { font-weight: 500; color: var(--ink); }
code { font-family: var(--mono); font-size: 0.88em; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(20px, 4vw, 44px); }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

.icon { width: 1em; height: 1em; display: inline-block; vertical-align: -0.14em; fill: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans); font-weight: 500; font-size: 1rem;
  padding: 13px 24px; border-radius: 999px; cursor: pointer;
  border: 1.5px solid transparent; text-decoration: none !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn .icon { font-size: 0.95em; }
.btn-primary { background: var(--orange); color: #fff; box-shadow: var(--shadow-1); }
.btn-primary:hover { background: var(--orange-600); transform: translateY(-1px); box-shadow: var(--shadow-2); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-secondary:hover { border-color: var(--ink); transform: translateY(-1px); }
.btn-dark-ghost { color: #fff; border-color: rgba(255, 255, 255, 0.4); }
.btn-dark-ghost:hover { border-color: #fff; }
.btn-sm { padding: 8px 16px; font-size: 0.9rem; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s ease;
}
.site-header.is-scrolled { box-shadow: 0 1px 0 var(--line), 0 8px 28px rgba(23, 24, 28, 0.07); }
.nav { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none !important; }
.brand .icon { font-size: 30px; color: #f6821f; }
.brand .wordmark { height: 21px; width: auto; display: block; color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; flex: 1; }
.nav-links a {
  color: var(--ink-2); font-size: 0.95rem; font-weight: 500; text-decoration: none !important;
  padding: 8px 12px; border-radius: 8px; transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.nav-links a:hover { background: var(--bg-soft); color: var(--ink); }
.nav-links a.is-active { color: var(--ink); background: var(--orange-050); }
.nav-ctas { display: flex; align-items: center; gap: 10px; }
.nav-login { font-size: 0.95rem; color: var(--ink-2); }
.nav-toggle {
  display: none; margin-left: auto; background: none; border: 1.5px solid var(--line-2);
  border-radius: 8px; padding: 8px 10px; cursor: pointer; color: var(--ink);
}
.nav-toggle .bars { display: block; width: 20px; height: 2px; background: var(--ink); position: relative; }
.nav-toggle .bars::before, .nav-toggle .bars::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink);
}
.nav-toggle .bars::before { top: -6px; } .nav-toggle .bars::after { top: 6px; }

@media (max-width: 1080px) {
  .nav-toggle { display: block; }
  .nav-links, .nav-ctas .nav-login {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-2);
  }
  .nav-links { flex-direction: column; align-items: stretch; padding: 12px 20px 16px; gap: 2px; }
  .nav-links a { padding: 12px 14px; font-size: 1rem; }
  .site-header.menu-open .nav-links { display: flex; }
  .nav-ctas { gap: 8px; }
  .nav-ctas .btn { padding: 9px 16px; font-size: 0.9rem; }
  .nav-ctas .nav-login { display: none; }
}
@media (max-width: 520px) {
  .nav-ctas .btn span.btn-label { display: none; }
  .nav-ctas .btn { padding: 9px 12px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    linear-gradient(180deg, #fff 0%, var(--bg-tint) 62%, #fff 100%);
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: url("../img/pattern.png");
  background-size: 640px auto; opacity: 0.5; mix-blend-mode: multiply;
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(1100px 480px at 78% 12%, rgba(246, 130, 31, 0.10), transparent 62%);
  pointer-events: none;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 6.4fr) minmax(0, 5.6fr); gap: clamp(28px, 4vw, 64px); align-items: center; padding-block: clamp(56px, 7vw, 104px) clamp(56px, 7vw, 96px); }
.hero .wrap > * { min-width: 0; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--orange-600); background: var(--orange-100);
  border: 1px solid #f6c99b; border-radius: 999px; padding: 6px 14px; margin-bottom: 22px;
}
.hero-eyebrow .icon { color: var(--orange); }
.hero h1 .accent { color: var(--orange); }
.hero-sub { font-size: clamp(1.1rem, 1.6vw, 1.3rem); line-height: 1.55; color: var(--muted); max-width: 34em; margin-bottom: 30px; }
.hero-sub strong { color: var(--ink); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
.hero-note { font-size: 0.88rem; color: var(--faint); margin: 0; }
.hero-note a { color: var(--muted); text-decoration: underline; text-decoration-color: var(--line-2); text-underline-offset: 3px; }

.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; border-top: 1px solid var(--line-2); padding-top: 22px; max-width: 560px; }
.hero-stat b { display: block; font-size: 1.35rem; font-weight: 500; color: var(--ink); letter-spacing: -0.01em; }
.hero-stat span { font-size: 0.8rem; color: var(--faint); line-height: 1.35; display: block; }

.hero-visual { position: relative; }
.hero-visual .frame {
  position: relative; border-radius: 20px; background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow-2);
  padding: 10px; overflow: hidden;
}
.hero-visual .frame::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px 220px at 50% 0%, rgba(246, 130, 31, 0.06), transparent 70%);
  pointer-events: none;
}
.hero-visual figcaption { text-align: center; font-size: 0.82rem; color: var(--faint); padding: 10px 4px 4px; }

@media (max-width: 940px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-visual { max-width: 620px; }
}

/* ---------- Section scaffolding ---------- */
.section { padding-block: clamp(64px, 8vw, 116px); border-bottom: 1px solid var(--line); }
.section-soft { background: var(--bg-soft); }
.section-tint { background: var(--bg-tint); }
.section-dark { background: var(--dark); color: #c9ccd4; border-bottom: none; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-head { max-width: 780px; margin-bottom: clamp(36px, 4vw, 56px); }
.section-head.center { margin-inline: auto; text-align: center; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--orange-600); margin-bottom: 14px;
}
.kicker .icon { color: var(--orange); }
.section-head p.lead { font-size: 1.15rem; color: var(--muted); margin: 0; }
.section-dark .section-head p.lead { color: #9aa0ab; }

/* ---------- Explainer ---------- */
.definition-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-1); padding: clamp(24px, 3.4vw, 44px);
  margin-bottom: clamp(36px, 4vw, 56px);
}
.definition-card::before {
  content: ""; position: absolute; left: 0; top: 18px; bottom: 18px; width: 4px; border-radius: 4px;
  background: linear-gradient(180deg, var(--orange), #fbad66);
}
.definition-card .bigline {
  font-size: clamp(1.35rem, 2.6vw, 1.9rem); line-height: 1.35; color: var(--ink); font-weight: 500;
  letter-spacing: -0.015em; margin: 0 0 14px;
}
.definition-card .bigline em { font-style: normal; color: var(--orange-600); }
.definition-card .after { color: var(--muted); margin: 0; max-width: 62em; }

.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.model-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 26px 22px; position: relative; transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.model-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-1); border-color: var(--line-2); }
.model-card .step {
  position: absolute; top: 22px; right: 22px; font-family: var(--mono); font-size: 0.75rem;
  color: var(--faint); letter-spacing: 0.1em;
}
.model-card .icon-tile {
  width: 46px; height: 46px; border-radius: 12px; background: var(--orange-050);
  border: 1px solid var(--orange-100); display: grid; place-items: center; margin-bottom: 16px;
  color: var(--orange); font-size: 22px;
}
.model-card h3 { margin-bottom: 8px; }
.model-card p { color: var(--muted); font-size: 0.98rem; margin: 0; }
.model-card code { color: var(--orange-600); font-size: 0.85em; background: var(--orange-050); padding: 1px 5px; border-radius: 5px; }
@media (max-width: 900px) { .model-grid { grid-template-columns: 1fr; } }

.eli12-strip {
  margin-top: clamp(36px, 4vw, 52px); border: 1px dashed var(--line-2); border-radius: var(--radius);
  padding: 20px 24px; display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center;
  background: #fff;
}
.eli12-strip .icon { font-size: 24px; color: var(--orange); }
.eli12-strip p { margin: 0; color: var(--muted); font-size: 0.98rem; }
@media (max-width: 640px) { .eli12-strip { grid-template-columns: 1fr; } }

/* ---------- Centerpiece (how it works) ---------- */
.how-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 26px; }
.how-tab {
  font-family: var(--sans); font-weight: 500; font-size: 0.95rem; color: var(--muted);
  background: #fff; border: 1.5px solid var(--line-2); border-radius: 999px;
  padding: 9px 18px; cursor: pointer; transition: all 0.15s ease;
}
.how-tab:hover { border-color: var(--ink); color: var(--ink); }
.how-tab[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.how-panel[hidden] { display: none; }

.race-scene {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px;
}
.race-scene > * { min-width: 0; }
@media (max-width: 1024px) { .race-scene { grid-template-columns: minmax(0, 1fr); } }
.scene {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.scene-bad { border-color: #ecd9d5; }
.scene-good { border-color: #d3e7db; }
.scene-head {
  display: flex; align-items: center; gap: 10px; padding: 14px 18px;
  border-bottom: 1px solid var(--line); font-weight: 500; color: var(--ink); font-size: 0.98rem;
}
.scene-bad .scene-head { background: var(--red-bg); }
.scene-good .scene-head { background: var(--green-bg); }
.scene-head .icon { font-size: 18px; }
.scene-bad .scene-head .icon { color: var(--red); }
.scene-good .scene-head .icon { color: var(--green); }
.scene-head .tag { margin-left: auto; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); }
.scene-svg-wrap { position: relative; padding: 6px; }
.scene-svg-wrap svg { display: block; width: 100%; height: auto; }
.scene-status {
  border-top: 1px solid var(--line); padding: 13px 18px 15px; font-size: 0.9rem; line-height: 1.5;
  color: var(--muted); min-height: 76px;
}
.scene-status b { color: var(--ink); }
.scene-status .status-line { display: flex; gap: 8px; align-items: flex-start; }
.scene-status .icon { flex: none; margin-top: 2px; font-size: 15px; }
.scene-bad .scene-status .icon { color: var(--red); }
.scene-good .scene-status .icon { color: var(--green); }

.how-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 22px 0 6px; }
.how-controls .spacer { flex: 1; }
.ctrl-hint { font-size: 0.85rem; color: var(--faint); }

/* Region picker (tab B) */
.region-panel { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 22px; align-items: stretch; }
.region-panel > * { min-width: 0; }
@media (max-width: 1024px) { .region-panel { grid-template-columns: minmax(0, 1fr); } }
.region-map { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 8px; position: relative; overflow: hidden; }
.region-map svg { display: block; width: 100%; height: auto; }
.region-side { display: flex; flex-direction: column; gap: 16px; }
.region-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.region-card h4 { margin-bottom: 6px; }
.region-card p { font-size: 0.93rem; color: var(--muted); margin: 0; }
.region-card .mono-line {
  font-family: var(--mono); font-size: 0.8rem; color: var(--orange-600);
  background: var(--orange-050); border-radius: 8px; padding: 8px 12px; margin-top: 12px;
  overflow-x: auto; white-space: nowrap;
}
.region-log { font-family: var(--mono); font-size: 0.78rem; color: var(--muted); line-height: 1.7; }
.region-log .row { display: flex; gap: 10px; }
.region-log .row::before { content: "›"; color: var(--orange); }
.region-log .ok { color: var(--green); }

/* ---------- Mechanics ---------- */
.mech-list { display: flex; flex-direction: column; gap: 18px; }
details.mech {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: border-color 0.18s ease;
}
details.mech[open] { border-color: var(--line-2); box-shadow: var(--shadow-1); }
details.mech summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 18px;
  padding: 20px 24px; user-select: none;
}
details.mech summary::-webkit-details-marker { display: none; }
details.mech summary:hover { background: var(--bg-soft); }
details.mech summary .num {
  font-family: var(--mono); font-size: 0.8rem; color: var(--faint); flex: none; width: 2ch;
}
details.mech summary .icon-tile {
  flex: none; width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: var(--orange-050); border: 1px solid var(--orange-100); color: var(--orange); font-size: 20px;
}
details.mech summary h3 { margin: 0; font-size: 1.12rem; }
details.mech summary .hint { display: block; font-size: 0.85rem; color: var(--faint); font-weight: 400; margin-top: 2px; }
details.mech summary .chev { margin-left: auto; flex: none; color: var(--faint); transition: transform 0.2s ease; font-size: 18px; }
details.mech[open] summary .chev { transform: rotate(180deg); color: var(--orange); }
.mech-body { padding: 4px 24px 26px 24px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; border-top: 1px solid var(--line); padding-top: 22px; }
.mech-body > * { min-width: 0; }
.mech-body .prose p { font-size: 0.98rem; color: var(--muted); }
.mech-body .prose p:last-child { margin-bottom: 0; }
.mech-body .prose .fact {
  font-size: 0.85rem; color: var(--muted); background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 14px; display: flex; gap: 9px; align-items: flex-start;
}
.mech-body .prose .fact .icon { color: var(--orange); flex: none; margin-top: 2px; }
.mech-figure {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 10px;
  display: flex; flex-direction: column; gap: 10px;
}
.mech-figure svg { width: 100%; height: auto; display: block; }
.mech-figure figcaption { font-size: 0.78rem; color: var(--faint); text-align: center; padding: 0 6px 4px; }
@media (max-width: 880px) { .mech-body { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Code blocks & tabs ---------- */
.code-tabs { background: var(--code-bg); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-1); }
.code-tabbar {
  display: flex; gap: 2px; padding: 8px 10px 0; background: #0a0b0e;
  border-bottom: 1px solid #23252d; overflow-x: auto; scrollbar-width: thin;
}
.code-tab {
  font-family: var(--mono); font-size: 0.8rem; color: #9198a5; background: transparent;
  border: none; border-radius: 8px 8px 0 0; padding: 9px 16px 10px; cursor: pointer;
  white-space: nowrap; transition: color 0.15s ease, background 0.15s ease;
}
.code-tab:hover { color: #d6dae2; }
.code-tab[aria-selected="true"] { color: #fff; background: var(--code-bg); }
.code-tab .icon { margin-right: 6px; color: var(--orange); }
.code-pane { position: relative; }
.code-pane[hidden] { display: none; }
.code-pane .copy-btn {
  position: absolute; top: 12px; right: 12px; z-index: 3;
  background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.16);
  color: #c9ccd4; border-radius: 8px; padding: 6px 11px; font-size: 0.78rem; font-family: var(--sans);
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
  transition: background 0.15s ease, color 0.15s ease;
}
.code-pane .copy-btn:hover { background: rgba(255, 255, 255, 0.16); color: #fff; }
.code-pane .copy-btn.copied { color: #7ede9f; border-color: rgba(126, 222, 159, 0.4); }
pre.code {
  margin: 0; padding: 20px 22px; overflow-x: auto;
  font-family: var(--mono); font-size: 0.84rem; line-height: 1.62; color: var(--code-ink);
  tab-size: 2; scrollbar-width: thin;
}
pre.code code { font-size: inherit; }
.tok-kw { color: #ff9d5c; }
.tok-str { color: #a8d977; }
.tok-com { color: #737b89; font-style: italic; }
.tok-num { color: #ecd28a; }
.tok-fn { color: #79b8ff; }
.tok-type { color: #6fd3e8; }
.tok-attr { color: #d6a2e0; }
.code-title { font-family: var(--mono); font-size: 0.75rem; color: #737b89; padding: 10px 22px 0; }

.code-inline-solo { border-radius: var(--radius); }
.code-inline-solo pre.code { padding-top: 24px; }

/* ---------- Use cases ---------- */
.uc-tabs { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 26px; align-items: start; }
.uc-tabs > * { min-width: 0; }
@media (max-width: 1024px) { .uc-tabs { grid-template-columns: minmax(0, 1fr); } }
.uc-rail { display: flex; flex-direction: column; gap: 6px; position: sticky; top: 92px; }
@media (max-width: 1024px) { .uc-rail { position: static; flex-direction: row; flex-wrap: wrap; } }
.uc-tab {
  display: flex; align-items: center; gap: 12px; text-align: left;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 13px 16px; cursor: pointer; font-family: var(--sans); font-weight: 500; font-size: 0.95rem; color: var(--ink-2);
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.uc-tab .icon { flex: none; font-size: 19px; color: var(--muted); transition: color 0.15s ease; }
.uc-tab:hover { border-color: var(--line-2); transform: translateX(2px); }
.uc-tab[aria-selected="true"] { border-color: var(--orange); background: var(--orange-050); color: var(--ink); }
.uc-tab[aria-selected="true"] .icon { color: var(--orange); }
.uc-panel[hidden] { display: none; }
.uc-panel-inner { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(22px, 3vw, 36px); }
.uc-panel-inner > p.uc-lede { font-size: 1.08rem; color: var(--ink-2); }
.uc-contrast { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 24px 0; }
@media (max-width: 760px) { .uc-contrast { grid-template-columns: 1fr; } }
.uc-box { border-radius: 12px; padding: 18px 20px; border: 1px solid; }
.uc-box h4 { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; font-size: 0.95rem; }
.uc-box h4 .icon { font-size: 17px; }
.uc-box-old { background: var(--red-bg); border-color: #ecd3ce; }
.uc-box-old h4 { color: var(--red); }
.uc-box-old h4 .icon { color: var(--red); }
.uc-box-new { background: var(--green-bg); border-color: #cfe5d8; }
.uc-box-new h4 { color: var(--green); }
.uc-box-new h4 .icon { color: var(--green); }
.uc-box ul { margin: 0; padding-left: 4px; list-style: none; display: flex; flex-direction: column; gap: 8px; }
.uc-box li { position: relative; padding-left: 22px; font-size: 0.92rem; line-height: 1.5; color: var(--ink-2); }
.uc-box li .icon { position: absolute; left: 0; top: 3px; font-size: 14px; }
.uc-box-old li .icon { color: var(--red); }
.uc-box-new li .icon { color: var(--green); }
.uc-code-label { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); margin: 0 0 10px; }

/* ---------- DX quickstart ---------- */
.dx-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(26px, 3.4vw, 48px); align-items: start; }
.dx-grid > * { min-width: 0; }
@media (max-width: 980px) { .dx-grid { grid-template-columns: minmax(0, 1fr); } }
.steps { display: flex; flex-direction: column; gap: 0; counter-reset: step; }
.step-item { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--line-2); }
.step-item:last-child { border-bottom: none; }
.step-item .n {
  counter-increment: step; width: 40px; height: 40px; border-radius: 50%;
  background: var(--ink); color: #fff; display: grid; place-items: center;
  font-weight: 500; font-size: 1rem;
}
.step-item .n::before { content: counter(step); }
.step-item h3 { font-size: 1.02rem; margin-bottom: 4px; }
.step-item p { font-size: 0.92rem; color: var(--muted); margin: 0; }
.step-item .cmd { font-family: var(--mono); font-size: 0.8rem; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px; padding: 7px 12px; display: inline-block; margin-top: 8px; color: var(--ink); }
.dx-aside-note { margin-top: 26px; border-left: 3px solid var(--orange); padding: 4px 0 4px 18px; font-size: 0.92rem; color: var(--muted); }

/* ---------- Comparison table ---------- */
.compare-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.compare { border-collapse: collapse; width: 100%; min-width: 820px; font-size: 0.93rem; }
table.compare th, table.compare td { padding: 14px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
table.compare thead th { background: var(--bg-soft); font-weight: 500; color: var(--ink); font-size: 0.95rem; border-bottom: 2px solid var(--line-2); }
table.compare tbody tr:last-child td { border-bottom: none; }
table.compare td:first-child { color: var(--ink); font-weight: 500; width: 200px; background: #fcfcfd; }
table.compare .col-do { background: var(--orange-050); }
table.compare thead th.col-do { color: var(--orange-600); }
table.compare td .icon { color: var(--green); }
table.compare td.neg .icon { color: var(--red); }
table.compare td.mid .icon { color: #b58900; }
table.compare .rowlabel small { display: block; font-weight: 400; color: var(--faint); font-size: 0.8rem; margin-top: 2px; }

.not-do-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; }
@media (max-width: 900px) { .not-do-grid { grid-template-columns: 1fr; } }
.not-do-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.not-do-card h4 { display: flex; gap: 9px; align-items: center; margin-bottom: 6px; }
.not-do-card h4 .icon { color: var(--blue); font-size: 18px; }
.not-do-card p { font-size: 0.88rem; color: var(--muted); margin: 0; }
.not-do-card p a { white-space: nowrap; }

/* ---------- Pricing ---------- */
.price-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; margin-bottom: 26px; }
@media (max-width: 880px) { .price-grid { grid-template-columns: 1fr; } }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; position: relative; }
.price-card.featured { border-color: var(--orange); box-shadow: var(--shadow-1); }
.price-card .plan { font-size: 0.85rem; font-family: var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); }
.price-card.featured .plan { color: var(--orange-600); }
.price-card .price-line { display: flex; align-items: baseline; gap: 8px; margin: 10px 0 4px; }
.price-card .price-line b { font-size: 2.1rem; font-weight: 500; color: var(--ink); letter-spacing: -0.02em; }
.price-card .price-line span { color: var(--faint); font-size: 0.9rem; }
.price-card ul { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.price-card li { display: flex; gap: 10px; font-size: 0.92rem; color: var(--ink-2); }
.price-card li .icon { color: var(--green); flex: none; margin-top: 4px; font-size: 14px; }
.price-card li small { color: var(--faint); }
.price-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.price { border-collapse: collapse; width: 100%; min-width: 720px; font-size: 0.9rem; }
table.price th, table.price td { padding: 12px 18px; text-align: left; border-bottom: 1px solid var(--line); }
table.price thead th { background: var(--bg-soft); color: var(--ink); font-weight: 500; }
table.price tbody tr:last-child td { border-bottom: none; }
table.price td.dim { color: var(--muted); }
.price-fineprint { font-size: 0.84rem; color: var(--faint); margin-top: 16px; max-width: 72em; }

/* ---------- Proof ---------- */
.quote-hero {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(28px, 4vw, 48px); display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: clamp(24px, 3vw, 44px); align-items: center;
}
@media (max-width: 880px) { .quote-hero { grid-template-columns: 1fr; } }
.quote-hero blockquote { margin: 0; font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.5; color: var(--ink); font-weight: 500; letter-spacing: -0.01em; }
.quote-hero blockquote::before { content: "“"; color: var(--orange); font-size: 1.6em; line-height: 0; vertical-align: -0.3em; margin-right: 4px; }
.quote-hero figcaption { margin-top: 16px; font-size: 0.9rem; color: var(--muted); display: flex; align-items: center; gap: 12px; }
.quote-hero .who b { display: block; color: var(--ink); font-weight: 500; }
.quote-logo-tile {
  display: grid; place-items: center; padding: 20px; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 12px;
}
.quote-logo-tile .icon { width: 150px; height: auto; color: var(--ink); }
.logo-strip { display: flex; flex-wrap: wrap; gap: 14px 34px; align-items: center; justify-content: center; margin-top: 40px; padding-top: 34px; border-top: 1px solid var(--line-2); }
.logo-strip .icon { height: 26px; width: auto; color: #b9bcc3; transition: color 0.18s ease; }
.logo-strip .icon:hover { color: var(--ink); }
.logo-strip-label { flex-basis: 100%; text-align: center; font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); font-family: var(--mono); margin-bottom: 4px; }

.eco-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
@media (max-width: 900px) { .eco-grid { grid-template-columns: 1fr; } }
.eco-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; display: flex; gap: 14px; align-items: flex-start; transition: transform 0.15s ease, box-shadow 0.15s ease; }
.eco-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-1); }
.eco-card .icon { flex: none; font-size: 22px; color: var(--orange); margin-top: 3px; }
.eco-card h4 { margin-bottom: 4px; }
.eco-card p { font-size: 0.88rem; color: var(--muted); margin: 0; }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 860px; margin-inline: auto; }
details.faq { background: #fff; border: 1px solid var(--line); border-radius: 12px; }
details.faq summary {
  list-style: none; cursor: pointer; padding: 17px 22px; font-weight: 500; color: var(--ink);
  display: flex; align-items: center; gap: 14px; user-select: none;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary:hover { background: var(--bg-soft); border-radius: 12px; }
details.faq summary .chev { margin-left: auto; color: var(--faint); transition: transform 0.2s ease; font-size: 16px; flex: none; }
details.faq[open] summary .chev { transform: rotate(180deg); color: var(--orange); }
details.faq .faq-body { padding: 0 22px 20px; color: var(--muted); font-size: 0.97rem; }
details.faq .faq-body p:last-child { margin-bottom: 0; }
details.faq .faq-body code { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 5px; padding: 0 5px; font-size: 0.85em; }

/* ---------- Final CTA ---------- */
.cta-band { position: relative; overflow: hidden; background: linear-gradient(120deg, #f6821f 0%, #fb9a38 55%, #f6821f 100%); }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image: url("../img/pattern.png"); background-size: 560px auto; opacity: 0.35; mix-blend-mode: overlay;
}
.cta-inner { position: relative; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 40px; align-items: center; padding-block: clamp(64px, 8vw, 110px); }
.cta-inner h2 { color: #fff; font-size: clamp(2rem, 4vw, 3rem); }
.cta-inner p { color: rgba(255, 255, 255, 0.92); font-size: 1.15rem; max-width: 30em; }
.cta-inner .btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.cta-inner .btn-secondary { background: #fff; border-color: #fff; color: var(--ink); }
.cta-inner .btn-secondary:hover { background: var(--bg-soft); }
.cta-visual { position: relative; }
.cta-visual img { border-radius: 18px; box-shadow: 0 24px 60px rgba(66, 26, 0, 0.28); display: block; }
.cta-visual .float-chip {
  position: absolute; bottom: -18px; left: -14px; background: #fff; border-radius: 12px;
  box-shadow: var(--shadow-2); padding: 10px 16px; font-family: var(--mono); font-size: 0.78rem; color: var(--ink);
  display: flex; align-items: center; gap: 9px;
}
.cta-visual .float-chip .icon { color: var(--green); }
@media (max-width: 880px) { .cta-inner { grid-template-columns: 1fr; } .cta-visual { max-width: 420px; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--dark); color: #a6aab3; font-size: 0.92rem; }
.footer-top { display: grid; grid-template-columns: 2.2fr repeat(4, 1fr); gap: 36px; padding-block: 60px 44px; }
@media (max-width: 1024px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-top { grid-template-columns: 1fr; } }
.footer-brand .icon { font-size: 34px; color: #f6821f; }
.footer-brand p { margin-top: 14px; font-size: 0.88rem; line-height: 1.6; max-width: 30em; }
.site-footer h4 { color: #fff; font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; font-family: var(--mono); margin-bottom: 16px; font-weight: 500; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.site-footer ul a { color: #c2c6cd; text-decoration: none; }
.site-footer ul a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.footer-social { display: flex; gap: 14px; margin-top: 20px; }
.footer-social a { color: #c2c6cd; display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #33363e; border-radius: 10px; transition: border-color 0.15s ease, color 0.15s ease; }
.footer-social a:hover { border-color: #f6821f; color: #fff; }
.footer-social .icon { font-size: 18px; }
.footer-bottom { border-top: 1px solid #272a31; padding-block: 22px 30px; display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; font-size: 0.82rem; color: #787d87; }
.footer-bottom .links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-bottom a { color: #a6aab3; }
.footer-bottom .note { flex-basis: 100%; color: #6a6f79; font-size: 0.78rem; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- SVG diagram shared ---------- */
.dg-label { font-family: var(--sans); font-size: 12.5px; fill: var(--ink-2); }
.dg-label-sm { font-family: var(--mono); font-size: 10px; fill: var(--faint); }
.dg-box { fill: #fff; stroke: var(--line-2); stroke-width: 1.5; rx: 10; }
.dg-arc { fill: none; stroke: var(--line-2); stroke-width: 1.6; }
.dg-dot { fill: var(--orange); }
.dg-live { fill: var(--green); }

/* Status badge inside scenes */
.badge-flash { animation: badgepulse 0.6s ease 2; }
@keyframes badgepulse { 50% { opacity: 0.35; } }

/* Play/pause button */
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 40px; height: 40px; border-radius: 50%; border: 1.5px solid var(--line-2); background: #fff;
  color: var(--ink); cursor: pointer; transition: all 0.15s ease;
}
.icon-btn:hover { border-color: var(--ink); }
.icon-btn .icon { font-size: 15px; }