:root,
.knowledge-hub {
  --color-paper: oklch(97% 0.018 88);
  --color-paper-strong: oklch(93% 0.028 84);
  --color-surface: oklch(99% 0.008 88);
  --color-ink: oklch(25% 0.035 162);
  --color-muted: oklch(49% 0.025 160);
  --color-rule: oklch(84% 0.025 86);
  --color-green: oklch(39% 0.105 162);
  --color-green-dark: oklch(28% 0.07 162);
  --color-green-soft: oklch(91% 0.055 158);
  --color-gold: oklch(69% 0.092 80);
  --color-white: oklch(99% 0.008 88);
  --color-focus: oklch(55% 0.16 153);
  --font-display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-code: "SFMono-Regular", "Cascadia Code", monospace;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --text-sm: 0.78rem;
  --text-body: 1rem;
  --text-lead: clamp(1.05rem, 1.5vw, 1.25rem);
  --text-title: clamp(2.25rem, 5vw, 4.75rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 140ms;
  --dur-base: 260ms;
  --rule-thin: 1px;
  --rule-strong: 2px;
  --radius-sm: 0.45rem;
  --radius-md: 0.8rem;
  --radius-lg: 1.25rem;
}

@import "tailwindcss";


/* Hallmark · pre-emit critique: P5 H5 E5 S5 R4 V5
 * genre: atmospheric · macrostructure: Workbench · theme: Aurora
 * nav: N5 Floating pill · footer: Ft5 Statement · enrichment: Tier-A system console
 * audience: 好风景门店团队 · use: 在线 7S SOP · tone: 专业、科技感、克制的炫酷
 * motion: orchestrated reveal + purposeful hover + copy feedback
 */
:root {
  --color-paper: #06110e;
  --color-paper-2: #0b1915;
  --color-panel: #10231d;
  --color-panel-soft: #132a23;
  --color-ink: #eff9f4;
  --color-muted: #9fb8ad;
  --color-rule: #29463b;
  --color-brand: #42e8a4;
  --color-brand-bright: #8fffd0;
  --color-brand-dark: #0d7e58;
  --color-gold: #d8b46c;
  --color-focus: #fff0a8;
  --color-black: #020806;
  --color-shadow: #00000080;
  --color-glass: #0b1915d9;
  --color-glass-light: #eff9f414;
  --color-glow: #42e8a42b;
  --color-glow-soft: #42e8a414;
  --font-display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-outlier: "SFMono-Regular", "Cascadia Code", "Noto Sans Mono CJK SC", monospace;
  --space-page: clamp(1.25rem, 5vw, 4.5rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-micro: 120ms;
  --dur-short: 220ms;
  --dur-long: 420ms;
}

* { box-sizing: border-box; }
html, body { margin: 0; overflow-x: clip; scroll-behavior: smooth; }
body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  background-image:
    linear-gradient(var(--color-glow-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-glow-soft) 1px, transparent 1px);
  background-size: 64px 64px;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--color-brand); color: var(--color-black); }

.site-shell { min-width: 0; }
.site-header {
  position: fixed;
  inset: 1rem auto auto 50%;
  z-index: 30;
  width: min(43rem, calc(100% - 2rem));
  min-height: 4rem;
  padding: .5rem .6rem .5rem .7rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.25rem;
  border: 1px solid var(--color-rule);
  border-radius: 999px;
  background: var(--color-glass);
  backdrop-filter: blur(18px) saturate(135%);
  box-shadow: 0 1.25rem 3.5rem -2rem var(--color-shadow);
  transform: translateX(-50%);
}
.brand { display: inline-flex; align-items: center; gap: .65rem; width: fit-content; }
.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-brand);
  color: var(--color-black);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}
.brand strong, .brand small { display: block; line-height: 1.05; }
.brand strong { font-family: var(--font-outlier); font-size: .7rem; letter-spacing: .1em; }
.brand small { margin-top: .25rem; color: var(--color-muted); font-size: .62rem; }
nav { display: flex; gap: 1.35rem; font-size: .75rem; }
nav a, .version, footer a { white-space: nowrap; }
nav a { color: var(--color-muted); transition: color var(--dur-short) var(--ease-out); }
nav a:hover, nav a:focus-visible { color: var(--color-brand-bright); }
.version {
  justify-self: end;
  min-height: 2.75rem;
  padding-inline: 1rem;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--color-brand);
  color: var(--color-black);
  font-size: .72rem;
  font-weight: 800;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.version:hover { transform: translateY(-1.5px); background: var(--color-brand-bright); }
.version:active { transform: translateY(0); }

.hero {
  min-height: min(55rem, 100svh);
  padding: clamp(8.5rem, 13vw, 11rem) var(--space-page) clamp(5.5rem, 9vw, 8rem);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, .92fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  border-bottom: 1px solid var(--color-rule);
  background:
    radial-gradient(circle at 79% 34%, var(--color-glow), transparent 25rem),
    linear-gradient(180deg, var(--color-black), transparent 44%);
}
.eyebrow {
  margin: 0 0 1.5rem;
  color: var(--color-brand);
  font-family: var(--font-outlier);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .16em;
}
h1, h2, h3 {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  font-style: normal;
}
h1 {
  max-width: 10ch;
  font-size: clamp(3.2rem, 6.6vw, 5.5rem);
  line-height: 1.04;
  letter-spacing: -.055em;
  font-weight: 700;
}
h1 span { color: var(--color-brand); }
.hero-intro {
  max-width: 38rem;
  margin: 2rem 0 0;
  color: var(--color-muted);
  font-size: clamp(.96rem, 1.3vw, 1.12rem);
  line-height: 1.85;
}
.hero-actions { margin-top: 2.25rem; display: flex; align-items: center; gap: 1.5rem; }
.primary {
  min-height: 3.25rem;
  padding: 0 1.15rem;
  display: inline-flex;
  align-items: center;
  gap: 3rem;
  border: 1px solid var(--color-brand);
  background: var(--color-brand);
  color: var(--color-black);
  font-size: .82rem;
  font-weight: 800;
  white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.primary:hover { transform: translateY(-1.5px); background: var(--color-brand-bright); }
.primary:active { transform: translateY(0); }
.text-link {
  padding-bottom: .3rem;
  border-bottom: 1px solid var(--color-muted);
  color: var(--color-muted);
  font-size: .82rem;
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.text-link:hover { color: var(--color-ink); border-color: var(--color-ink); }

.hero-console {
  position: relative;
  min-width: 0;
  padding: .85rem;
  overflow: hidden;
  border: 1px solid var(--color-rule);
  background: var(--color-glass-light);
  box-shadow: 0 2rem 6rem -3rem var(--color-brand-dark);
}
.console-status {
  min-height: 2.5rem;
  padding: 0 .25rem .75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-rule);
}
.console-status > span:last-child {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--color-brand);
  font-size: .65rem;
}
.console-status > span:last-child::before {
  content: "";
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--color-brand);
}
.system-label { font-family: var(--font-outlier); font-size: .62rem; letter-spacing: .2em; }
.rb-shiny-text { color: var(--color-muted); }
.is-ready .rb-shiny-text { animation: rb-shine 1.6s var(--ease-out) .45s 1 both; }
@keyframes rb-shine { 45% { color: var(--color-brand-bright); transform: translateX(.18rem); } }
.hero-index a {
  min-height: 3.35rem;
  padding-inline: .4rem;
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  align-items: center;
  gap: .6rem;
  border-bottom: 1px solid var(--color-rule);
  transition: transform var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.hero-index a:last-child { border-bottom: 0; }
.hero-index a:hover, .hero-index a:focus-visible {
  transform: translateX(.35rem);
  background: var(--color-glow-soft);
}
.hero-index span, .hero-index small {
  color: var(--color-muted);
  font-family: var(--font-outlier);
  font-size: .6rem;
  letter-spacing: .1em;
}
.hero-index a:hover span, .hero-index a:hover small { color: var(--color-brand); }
.console-scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-top: 1px solid var(--color-brand-bright);
  opacity: 0;
  transform: translateY(-100%);
}
.console-scan { animation: console-scan 1.4s var(--ease-in-out) .55s 1 both; }
@keyframes console-scan {
  10% { opacity: .7; }
  80% { opacity: .25; }
  100% { opacity: 0; transform: translateY(42rem); }
}
.hero-reveal { opacity: 0; transform: translateY(.65rem); }
.hero-reveal {
  animation: reveal var(--dur-long) var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 75ms + 90ms);
}
@keyframes reveal { to { opacity: 1; transform: none; } }

.promise {
  padding: clamp(4rem, 7vw, 6.5rem) var(--space-page);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(3rem, 7vw, 6rem);
  background: var(--color-brand);
  color: var(--color-black);
}
.promise > p { margin: 0; font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.22; }
.promise > div { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: center; }
.promise span { padding: 1rem 0; border-bottom: 1px solid var(--color-brand-dark); font-size: .83rem; font-weight: 700; }

.system, .principles { padding: clamp(5.5rem, 10vw, 8rem) var(--space-page); }
.section-head { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(3rem, 7vw, 6rem); align-items: end; }
.section-head h2, .today-side h2, .principles h2 { font-size: clamp(2.65rem, 5vw, 4.75rem); line-height: 1.06; }
.section-head > p, .today-side > p { margin: 0; color: var(--color-muted); line-height: 1.8; }
.journey {
  margin-top: 4.5rem;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border: 1px solid var(--color-rule);
  background: var(--color-panel);
}
.journey a {
  min-height: 12rem;
  padding: 1.1rem .9rem;
  border-right: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
  transition: transform var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.journey a:last-child { border-right: 0; }
.journey span, .module-title > span { color: var(--color-gold); font-family: var(--font-outlier); font-size: .66rem; }
.journey strong { margin-top: auto; font-family: var(--font-display); font-size: clamp(1.2rem, 1.8vw, 1.8rem); }
.journey small { margin-top: .55rem; color: var(--color-muted); font-size: .56rem; letter-spacing: .1em; }
.journey a.active, .journey a:hover, .journey a:focus-visible {
  z-index: 1;
  transform: translateY(-.35rem);
  background: var(--color-brand);
  color: var(--color-black);
}
.journey a.active small, .journey a:hover small { color: var(--color-brand-dark); }

.today { display: grid; grid-template-columns: minmax(17.5rem, .42fr) minmax(0, 1fr); background: var(--color-paper-2); border-top: 1px solid var(--color-rule); }
.today-side { position: sticky; top: 5.75rem; align-self: start; padding: 5.5rem var(--space-page); }
.today-side > p { max-width: 26rem; margin-top: 1.75rem; }
.search { display: block; margin-top: 3rem; }
.search span { display: block; margin-bottom: .65rem; color: var(--color-muted); font-size: .68rem; }
.search input {
  width: 100%;
  padding: .9rem 0;
  border: 0;
  border-bottom: 1px solid var(--color-muted);
  outline: none;
  background: transparent;
  color: var(--color-ink);
  transition: border-color var(--dur-short) var(--ease-out);
}
.search input:focus-visible { border-color: var(--color-brand); }
.module-list { min-width: 0; border-left: 1px solid var(--color-rule); }
.module { min-height: 26rem; display: grid; grid-template-columns: 13rem minmax(0, 1fr); border-bottom: 1px solid var(--color-rule); scroll-margin-top: 6rem; }
.module-title { padding: 2.75rem 1.8rem; border-right: 1px solid var(--color-rule); }
.module-title h3 { margin-top: 2.6rem; font-size: 2.5rem; }
.module-title small { display: block; margin-top: .5rem; color: var(--color-muted); font-size: .62rem; letter-spacing: .14em; }
.module-body { padding: 2.65rem clamp(1.75rem, 5vw, 4.5rem); }
.module-line { max-width: 42rem; margin: 0 0 1.75rem; font-family: var(--font-display); font-size: clamp(1.4rem, 2.3vw, 2.1rem); line-height: 1.35; }
.module ol { margin: 0; padding: 0; list-style: none; counter-reset: steps; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 1.75rem; }
.module li { counter-increment: steps; padding: .8rem 0; border-top: 1px solid var(--color-rule); font-size: .84rem; }
.module li::before { content: "0" counter(steps); margin-right: .85rem; color: var(--color-gold); font-family: var(--font-outlier); font-size: .62rem; }
.check { margin-top: 1.6rem; display: grid; grid-template-columns: 5.25rem minmax(0, 1fr); gap: 1.1rem; padding-top: 1.1rem; border-top: 1px solid var(--color-muted); }
.check span { color: var(--color-brand); font-size: .7rem; font-weight: 700; }
.check p { margin: 0; font-size: .8rem; line-height: 1.7; }
.module button {
  min-height: 2.75rem;
  margin-top: 1.4rem;
  padding: 0 .85rem;
  border: 1px solid var(--color-rule);
  background: transparent;
  color: var(--color-brand);
  cursor: pointer;
  font-size: .72rem;
  font-weight: 700;
  white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), border-color var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.module button:hover { transform: translateY(-1px); border-color: var(--color-brand); background: var(--color-glow-soft); }
.module button:active { transform: translateY(0); }
.module button[data-state="copied"] { border-color: var(--color-brand); background: var(--color-brand); color: var(--color-black); }
.empty { padding: 5rem; color: var(--color-muted); }

.principles { background: var(--color-panel); }
.principle-main {
  margin-top: 4.5rem;
  padding: 2.75rem 0;
  display: grid;
  grid-template-columns: 5.5rem minmax(16rem, .8fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: end;
  border-top: 1px solid var(--color-muted);
  border-bottom: 1px solid var(--color-muted);
}
.principle-main span, .principle-pair span { color: var(--color-gold); font-family: var(--font-outlier); font-size: .7rem; }
.principle-main p, .principle-pair p { margin: 0; color: var(--color-muted); line-height: 1.7; }
.principle-pair { margin-left: 7.5rem; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.principle-pair article { padding: 2.5rem 2.25rem 0 0; }
.principle-pair article + article { padding-left: 2.25rem; border-left: 1px solid var(--color-rule); }
.principle-pair h3 { margin: 1.5rem 0 1rem; font-size: 2rem; }

.foot-stmt { padding: clamp(5rem, 10vw, 9rem) var(--space-page) 3.5rem; background: var(--color-black); }
.foot-stmt-line { max-width: 25ch; margin: 0; font-family: var(--font-display); font-size: clamp(2.1rem, 5vw, 4.2rem); line-height: 1.12; letter-spacing: -.035em; }
.foot-stmt-meta { margin-top: 5rem; padding-top: 1.4rem; display: flex; justify-content: space-between; gap: 2.5rem; border-top: 1px solid var(--color-rule); }
.foot-stmt-meta p { margin: .5rem 0 0; color: var(--color-muted); font-size: .72rem; }
.foot-stmt-meta a { align-self: center; color: var(--color-brand); }

a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }

@media (max-width: 60rem) {
  .site-header { grid-template-columns: 1fr auto; }
  nav { display: none; }
  .hero, .promise, .section-head, .today { grid-template-columns: minmax(0, 1fr); }
  .hero { min-height: auto; }
  .hero-console { max-width: 34rem; }
  .promise { gap: 2.5rem; }
  .journey { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .journey a { min-height: 8.5rem; border-bottom: 1px solid var(--color-rule); }
  .today-side { position: static; }
  .module-list { border-left: 0; border-top: 1px solid var(--color-rule); }
  .principle-main { grid-template-columns: 3.75rem minmax(0, 1fr); }
  .principle-main p { grid-column: 2; }
}

@media (max-width: 40rem) {
  .site-header { min-height: 3.5rem; inset-block-start: .75rem; }
  .brand-mark { width: 2.35rem; height: 2.35rem; font-size: 1.1rem; }
  .brand small { display: none; }
  .version { min-height: 2.4rem; padding-inline: .8rem; }
  .hero { padding-top: 7rem; gap: 3.5rem; }
  h1 { font-size: clamp(3rem, 15vw, 4.5rem); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-index a { min-height: 3.2rem; }
  .promise { padding-block: 3.5rem; }
  .system, .principles { padding-block: 5.25rem; }
  .journey { grid-template-columns: minmax(0, 1fr); }
  .journey a {
    min-height: 5.25rem;
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
    align-items: center;
    border-right: 0;
  }
  .journey strong, .journey small { margin: 0; }
  .journey a.active, .journey a:hover, .journey a:focus-visible { transform: translateX(.25rem); }
  .today-side { padding-block: 4.5rem 4rem; }
  .module { grid-template-columns: minmax(0, 1fr); }
  .module-title {
    padding: 2rem var(--space-page);
    display: grid;
    grid-template-columns: 3.5rem minmax(0, 1fr) auto;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--color-rule);
  }
  .module-title h3, .module-title small { margin: 0; }
  .module-title h3 { font-size: 1.85rem; }
  .module-body { padding: 2.1rem var(--space-page) 3.4rem; }
  .module ol, .check, .principle-main, .principle-pair { grid-template-columns: minmax(0, 1fr); }
  .principle-main { margin-top: 3rem; gap: 1.1rem; }
  .principle-main p { grid-column: auto; }
  .principle-pair { margin-left: 0; }
  .principle-pair article + article { padding-left: 0; border-left: 0; }
  .foot-stmt-meta { align-items: flex-start; flex-direction: column; }
  .foot-stmt-meta a { align-self: flex-start; }
}

@media (hover: hover) and (pointer: fine) {
  .hero-console:hover { border-color: var(--color-brand-dark); }
}

@media (pointer: coarse) {
  .primary, .text-link, .module button, .foot-stmt-meta a { min-height: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
  .hero-reveal { opacity: 1; transform: none; }
  .console-scan { display: none; }
}

/* Hallmark · macrostructure: Catalogue Journey · tone: quiet institutional
 * anchor hue: forest green · React Bits: SpotlightCard + ShinyText
 * pre-emit critique: P5 H5 E5 S5 R5 V5 · contrast: pass (40–41)
 * nav: N5 · footer: Ft5 · slop: pass (42–49) · mobile: pass (34, 49, 50–57)
 */
.knowledge-hub {
  min-height: 100vh;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
}
.knowledge-hub h1,
.knowledge-hub h2,
.knowledge-hub h3 {
  color: var(--color-ink);
  font-family: var(--font-display);
  letter-spacing: -0.035em;
}
.knowledge-hub h1,
.knowledge-hub h2,
.knowledge-hub h3,
.knowledge-hub strong,
.knowledge-hub p,
.knowledge-hub span {
  word-break: normal;
  overflow-wrap: break-word;
}
.knowledge-hub p { text-wrap: wrap; }
.hub-header {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 5rem;
  padding: 0 clamp(1rem, 4vw, 4rem);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-xl);
  border-bottom: var(--rule-thin) solid var(--color-rule);
  background: color-mix(in oklch, var(--color-paper) 92%, transparent);
  backdrop-filter: blur(16px);
}
.hub-brand { width: fit-content; }
.hub-brand img { width: 9rem; height: 2.6rem; object-fit: contain; object-position: left center; }
.hub-header nav { display: flex; gap: clamp(1rem, 3vw, 2.5rem); }
.hub-header nav a {
  color: var(--color-muted);
  font-size: var(--text-sm);
  transition: color var(--dur-fast) var(--ease-out);
}
.hub-header nav a:hover { color: var(--color-green); }
.header-action {
  justify-self: end;
  padding: 0.78rem 1rem;
  border: var(--rule-thin) solid var(--color-green);
  border-radius: var(--radius-sm);
  color: var(--color-green);
  font-size: var(--text-sm);
  font-weight: 700;
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.header-action:hover { transform: translateY(-1px); background: var(--color-green); color: var(--color-white); }

.hub-hero {
  padding: clamp(3.5rem, 7vw, 7rem) clamp(1.25rem, 6vw, 6rem) clamp(4rem, 8vw, 8rem);
  border-bottom: var(--rule-thin) solid var(--color-rule);
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--color-green-soft) 36%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in oklch, var(--color-green-soft) 36%, transparent) 1px, transparent 1px),
    var(--color-paper);
  background-size: 80px 80px;
}
.hero-branding { display: flex; align-items: center; gap: var(--space-md); color: var(--color-green); }
.hero-branding img { width: 3.6rem; height: 3.6rem; object-fit: contain; }
.hero-branding .rb-shiny-text {
  color: var(--color-green);
  font-family: var(--font-code);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  animation: hub-shine 2.2s var(--ease-in-out) 1 both;
}
@keyframes hub-shine { 45% { color: var(--color-gold); } }
.hero-layout {
  margin-top: clamp(2.5rem, 5vw, 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.92fr);
  gap: clamp(3rem, 9vw, 9rem);
  align-items: end;
}
.hero-layout h1 {
  max-width: none;
  font-size: var(--text-title);
  line-height: 1.08;
  font-weight: 700;
  text-wrap: wrap;
}
.hero-layout > div:first-child > p {
  max-width: 34rem;
  margin: var(--space-xl) 0 0;
  color: var(--color-muted);
  font-size: var(--text-lead);
  line-height: 1.8;
}
.hero-actions { margin-top: var(--space-xl); display: flex; flex-wrap: wrap; gap: var(--space-md); }
.primary-action,
.secondary-action,
.download-link {
  min-height: 3.1rem;
  padding: 0 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 750;
  transition: transform var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.primary-action { background: var(--color-green); color: var(--color-white); }
.secondary-action { border: var(--rule-thin) solid var(--color-rule); background: var(--color-surface); color: var(--color-green); }
.primary-action:hover,
.secondary-action:hover,
.download-link:hover { transform: translateY(-2px); }
.hero-proof { border: var(--rule-thin) solid var(--color-rule); background: var(--color-surface); }
.hero-proof img { width: 100%; aspect-ratio: 16 / 9; display: block; object-fit: cover; }
.hero-proof div { padding: var(--space-lg); display: grid; grid-template-columns: 0.8fr 1.2fr; gap: var(--space-lg); }
.hero-proof strong { color: var(--color-green); font-family: var(--font-display); font-size: 1.3rem; }
.hero-proof span { color: var(--color-muted); font-size: 0.86rem; line-height: 1.7; }

.learning-path,
.module-library,
.tool-library { padding: clamp(4.5rem, 9vw, 8rem) clamp(1.25rem, 6vw, 6rem); }
.section-intro { max-width: 67rem; display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(20rem, 1.2fr); gap: clamp(2rem, 7vw, 7rem); align-items: end; }
.section-intro h2 { font-size: clamp(2.4rem, 4.7vw, 4.2rem); line-height: 1.1; text-wrap: wrap; }
.section-intro p { margin: 0; color: var(--color-muted); font-size: var(--text-lead); line-height: 1.8; }
.stage-list {
  margin: var(--space-3xl) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--rule-strong) solid var(--color-green);
}
.stage-list li { border-bottom: var(--rule-thin) solid var(--color-rule); }
.stage-list a {
  min-height: 7.4rem;
  padding: var(--space-lg) 0;
  display: grid;
  grid-template-columns: 4rem 8rem 13rem minmax(0, 1fr) 3.5rem;
  gap: var(--space-lg);
  align-items: center;
  transition: padding var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}
.stage-list a:hover { padding-inline: var(--space-lg); background: var(--color-green-soft); }
.stage-list span { color: var(--color-gold); font-family: var(--font-code); }
.stage-list small { color: var(--color-muted); }
.stage-list strong { color: var(--color-green); font-family: var(--font-display); font-size: 1.45rem; }
.stage-list p { margin: 0; color: var(--color-muted); line-height: 1.7; }
.stage-list i { color: var(--color-green); font-style: normal; font-size: var(--text-sm); text-align: right; }

.feature-resource {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  background: var(--color-green-dark);
  color: var(--color-white);
}
.feature-copy { padding: clamp(4rem, 8vw, 7rem) clamp(1.25rem, 6vw, 6rem); }
.feature-copy h2 { max-width: none; margin-top: var(--space-lg); color: var(--color-white); font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: 1.1; text-wrap: wrap; }
.feature-copy > p { max-width: 42rem; margin-top: var(--space-lg); color: color-mix(in oklch, var(--color-white) 72%, transparent); font-size: var(--text-lead); line-height: 1.8; }
.resource-type { color: var(--color-gold); font-family: var(--font-code); font-size: var(--text-sm); }
.feature-copy ul { margin: var(--space-xl) 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.7rem; list-style: none; }
.feature-copy li { padding: 0.55rem 0.75rem; border: var(--rule-thin) solid color-mix(in oklch, var(--color-white) 20%, transparent); border-radius: 999px; font-size: var(--text-sm); }
.feature-copy .download-link { background: var(--color-gold); color: var(--color-green-dark); }
.feature-number {
  padding: clamp(3rem, 6vw, 6rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: var(--rule-thin) solid color-mix(in oklch, var(--color-white) 20%, transparent);
  background: color-mix(in oklch, var(--color-green) 55%, var(--color-green-dark));
}
.feature-number > span { color: var(--color-gold); font-family: var(--font-code); font-size: 5rem; }
.feature-number strong { color: var(--color-white); font-family: var(--font-display); font-size: 3.2rem; }
.feature-number small { color: color-mix(in oklch, var(--color-white) 68%, transparent); }

.module-library { background: var(--color-paper-strong); }
.section-intro.split { max-width: none; grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.42fr); }
.module-search span { display: block; margin-bottom: var(--space-xs); color: var(--color-muted); font-size: var(--text-sm); }
.module-search input {
  width: 100%;
  padding: 0.9rem 0;
  border: 0;
  border-bottom: var(--rule-thin) solid var(--color-muted);
  outline: 0;
  background: transparent;
  color: var(--color-ink);
}
.module-search input:focus { border-color: var(--color-green); }
.resource-grid {
  margin-top: var(--space-3xl);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: var(--rule-thin) solid var(--color-rule);
  border-left: var(--rule-thin) solid var(--color-rule);
}
.rb-spotlight-card {
  --spot-x: 50%;
  --spot-y: 50%;
  position: relative;
  min-height: 22rem;
  padding: var(--space-xl);
  overflow: hidden;
  border-right: var(--rule-thin) solid var(--color-rule);
  border-bottom: var(--rule-thin) solid var(--color-rule);
  background:
    radial-gradient(18rem circle at var(--spot-x) var(--spot-y), color-mix(in oklch, var(--color-green-soft) 86%, transparent), transparent 58%),
    var(--color-surface);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.rb-spotlight-card:hover { z-index: 2; transform: translateY(-4px); box-shadow: 0 1.2rem 2.5rem -1.8rem color-mix(in oklch, var(--color-green-dark) 55%, transparent); }
.rb-spotlight-card .card-index { color: var(--color-gold); font-family: var(--font-code); }
.rb-spotlight-card > small { float: right; color: var(--color-muted); }
.rb-spotlight-card h3 { margin-top: 4.5rem; font-size: 2rem; }
.rb-spotlight-card p { min-height: 5.5rem; margin: var(--space-md) 0 var(--space-lg); color: var(--color-muted); line-height: 1.75; }
.download-link { min-height: 2.8rem; padding-inline: 0.9rem; border: var(--rule-thin) solid var(--color-green); color: var(--color-green); }

.advanced-section {
  display: grid;
  grid-template-columns: minmax(17rem, 0.35fr) minmax(0, 1fr);
  background: var(--color-green);
  color: var(--color-white);
}
.advanced-rail { min-height: 31rem; padding: var(--space-2xl); display: flex; flex-direction: column; justify-content: space-between; border-right: var(--rule-thin) solid color-mix(in oklch, var(--color-white) 20%, transparent); }
.advanced-rail span { color: var(--color-gold); font-family: var(--font-code); }
.advanced-rail strong { max-width: 12ch; font-family: var(--font-display); font-size: 2.6rem; line-height: 1.25; }
.advanced-body { padding: clamp(4rem, 8vw, 7rem); }
.advanced-body h2 { max-width: none; color: var(--color-white); font-size: clamp(2.5rem, 5vw, 4.6rem); line-height: 1.12; text-wrap: wrap; }
.advanced-body > p { max-width: 47rem; margin-top: var(--space-lg); color: color-mix(in oklch, var(--color-white) 75%, transparent); font-size: var(--text-lead); line-height: 1.8; }
.advanced-points { margin: var(--space-xl) 0; display: flex; flex-wrap: wrap; gap: 0.7rem; }
.advanced-points span { padding: 0.55rem 0.75rem; border-bottom: var(--rule-thin) solid var(--color-gold); }
.advanced-body .download-link { border-color: var(--color-gold); color: var(--color-white); }

.tool-library { background: var(--color-surface); }
.tool-columns {
  margin-top: var(--space-3xl);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 6vw, 6rem);
}
.column-title { display: flex; align-items: center; gap: var(--space-lg); padding-bottom: var(--space-lg); border-bottom: var(--rule-strong) solid var(--color-green); }
.column-title > span { color: var(--color-gold); font-family: var(--font-display); font-size: 4.5rem; }
.column-title h3 { font-size: 1.9rem; }
.column-title p { margin: 0.35rem 0 0; color: var(--color-muted); }
.file-list a {
  min-height: 6.7rem;
  padding: var(--space-lg) 0;
  display: grid;
  grid-template-columns: minmax(8rem, 0.55fr) minmax(0, 1fr) 4rem;
  gap: var(--space-md);
  align-items: center;
  border-bottom: var(--rule-thin) solid var(--color-rule);
  transition: padding var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.file-list a:hover { padding-inline: var(--space-md); color: var(--color-green); }
.file-list strong { font-family: var(--font-display); font-size: 1.12rem; }
.file-list span { color: var(--color-muted); font-size: 0.82rem; line-height: 1.55; }
.file-list i { color: var(--color-green); font-size: var(--text-sm); font-style: normal; text-align: right; }

.usage-note {
  padding: clamp(4rem, 8vw, 7rem) clamp(1.25rem, 6vw, 6rem);
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(20rem, 1.2fr) auto;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
  background: var(--color-paper-strong);
  border-top: var(--rule-thin) solid var(--color-rule);
}
.usage-note h2 { font-size: clamp(2rem, 4vw, 3.6rem); line-height: 1.08; }
.usage-note p { margin: 0; color: var(--color-muted); font-size: var(--text-lead); line-height: 1.8; }
.usage-note a { color: var(--color-green); font-size: var(--text-sm); white-space: nowrap; }

.knowledge-hub a:focus-visible,
.knowledge-hub input:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .hub-header { grid-template-columns: 1fr auto; }
  .hub-header nav { display: none; }
  .hero-layout,
  .section-intro,
  .feature-resource,
  .advanced-section,
  .usage-note { grid-template-columns: 1fr; }
  .feature-number { min-height: 18rem; border-left: 0; border-top: var(--rule-thin) solid color-mix(in oklch, var(--color-white) 20%, transparent); }
  .resource-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tool-columns { grid-template-columns: 1fr; }
  .stage-list a { grid-template-columns: 3rem 6rem 10rem minmax(0, 1fr); }
  .stage-list i { display: none; }
}
@media (min-width: 981px) {
  .hero-layout h1 {
    white-space: nowrap;
    font-size: clamp(3rem, 4.2vw, 4.3rem);
  }
}
@media (max-width: 650px) {
  .hub-header { min-height: 4.4rem; }
  .hub-brand img { width: 7.2rem; }
  .header-action { padding: 0.65rem 0.75rem; }
  .hero-layout { gap: var(--space-2xl); }
  .hero-proof div,
  .section-intro.split { grid-template-columns: 1fr; }
  .stage-list a { grid-template-columns: 2.5rem 1fr; gap: var(--space-sm); }
  .stage-list small { grid-column: 2; }
  .stage-list strong { grid-column: 2; }
  .stage-list p { grid-column: 2; }
  .resource-grid { grid-template-columns: 1fr; }
  .rb-spotlight-card { min-height: 19rem; }
  .file-list a { grid-template-columns: 1fr auto; }
  .file-list span { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-branding .rb-shiny-text { animation: none; }
  .rb-spotlight-card,
  .stage-list a,
  .file-list a { transition-duration: 120ms; }
}