/* Zone Ai — tokens follow design-system/zone-ai/MASTER.md (UI UX Pro Max).
   Overrides: navy primary + green accent (owner brief), IBM Plex Sans Arabic only (owner request), self-hosted. */
@font-face{font-family:"Plex Arabic";src:url(/fonts/ibm-plex-sans-arabic-arabic-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Arabic";src:url(/fonts/ibm-plex-sans-arabic-arabic-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex Arabic";src:url(/fonts/ibm-plex-sans-arabic-arabic-700-normal.woff2) format("woff2");font-weight:700 800;font-display:swap}
:root{
  --color-primary:#081a33;--color-on-primary:#fff;--color-primary-deep:#050f1f;--color-primary-soft:#0f3566;
  --color-secondary:#2f4560;
  --color-accent:#2be3a4;--color-accent-2:#19b7c4;--grad-accent:linear-gradient(135deg,#2be3a4,#19b7c4);--color-on-accent:#050f1f;--color-success-text:#0a7a58;--color-success-bg:#dcf7ec;
  --color-background:#f3f8fb;--color-foreground:#0b1220;--color-card:#fff;
  --color-muted:#e6eef4;--color-muted-foreground:#46566b;--color-border:#dbe6ee;
  --color-destructive:#b3261e;--color-ring:#2be3a4;
  --on-dark:#fff;--on-dark-muted:#cbd5e1;--on-dark-faint:#9fb0cb;--line-dark:rgba(255,255,255,.14);
  --space-xs:4px;--space-sm:8px;--space-md:24px;--space-base:16px;--space-lg:32px;--space-xl:48px;--space-2xl:64px;--space-3xl:96px;
  --radius-sm:12px;--radius-md:16px;--radius-lg:24px;
  --dur-fast:150ms;--dur-base:240ms;--dur-enter:480ms;--dur-exit:300ms;--ease:cubic-bezier(.2,.7,.2,1);
  --shadow-md:0 4px 6px rgba(2,6,23,.1);--shadow-xl:0 20px 25px rgba(2,6,23,.18);
  --icon-sm:18px;--icon-md:24px;
  --font-body:"Plex Arabic","Noto Sans Arabic","Segoe UI",Tahoma,system-ui,sans-serif;
  --font-display:"Plex Arabic","Noto Sans Arabic","Segoe UI",Tahoma,system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--color-background);color:var(--color-foreground);font-family:var(--font-body);font-size:1rem;line-height:1.85;-webkit-font-smoothing:antialiased;touch-action:manipulation}
main:focus{outline:none}
.wrap{max-width:1080px;margin-inline:auto;padding-inline:var(--space-md)}
:focus-visible{outline:3px solid var(--color-primary);outline-offset:3px;border-radius:8px}
.top :focus-visible,.hero :focus-visible,.proof :focus-visible,.voice :focus-visible,.final :focus-visible,.skip:focus-visible,.panel-head :focus-visible{outline-color:var(--color-accent)}
.fab:focus-visible{outline:3px solid #fff;outline-offset:0;box-shadow:0 0 0 6px var(--color-primary),0 10px 26px rgba(2,6,23,.4)}
.skip{position:absolute;inset-inline-start:8px;top:-64px;background:var(--color-accent);color:var(--color-on-accent);padding:8px 16px;border-radius:8px;z-index:60;font-weight:700}
.skip:focus{top:8px}
.demo-banner{background:#fff3cf;color:#5f4300;text-align:center;padding:6px var(--space-base);font-size:.9rem}
.ic{width:var(--icon-sm);height:var(--icon-sm);flex:none}
.fab .ic{width:28px;height:28px}

/* header */
.top{position:sticky;top:0;z-index:30;background:rgba(6,20,42,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line-dark)}
.bar{display:flex;justify-content:space-between;align-items:center;min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--on-dark);text-decoration:none;font-family:var(--font-display);font-size:1.3rem;min-height:44px}

/* buttons */
.btn{font:inherit;font-weight:600;border:0;border-radius:var(--radius-sm);padding:12px 24px;min-height:48px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);transition:background var(--dur-base),box-shadow var(--dur-base),border-color var(--dur-base),color var(--dur-base),transform var(--dur-fast)}
.btn:active{transform:scale(.98)}
.btn.primary{background:var(--grad-accent);color:var(--color-on-accent);font-weight:700;box-shadow:0 8px 24px rgba(43,227,164,.28)}
.btn.primary:hover{background:linear-gradient(135deg,#5af0b8,#3cc9d4);box-shadow:0 10px 28px rgba(43,227,164,.4)}
.btn.outline{background:transparent;color:var(--on-dark);border:1.5px solid rgba(255,255,255,.4)}
.btn.outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn.ghost{background:rgba(255,255,255,.1);color:var(--on-dark);min-height:44px;padding:8px 18px}
.btn.ghost:hover{background:rgba(255,255,255,.18)}
.btn.danger{background:var(--color-destructive);color:#fff}
.btn:disabled{opacity:.65;cursor:not-allowed}
.btn[aria-busy="true"]::after{content:"";width:16px;height:16px;border-radius:50%;border:2.5px solid currentColor;border-inline-end-color:transparent;animation:spin .8s linear infinite}

/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1100px 560px at 85% -10%,var(--color-primary-soft),transparent 62%),radial-gradient(760px 440px at 4% 112%,rgba(25,183,196,.24),transparent 62%),var(--color-primary);color:var(--on-dark);padding-block:var(--space-3xl)}
.rings{position:absolute;inset-inline-end:-170px;top:-130px;width:760px;height:760px;pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:linear-gradient(to bottom,#000 30%,transparent);mask-image:linear-gradient(to bottom,#000 30%,transparent)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr 1fr;gap:var(--space-2xl);align-items:center}
.eyebrow{display:inline-block;margin:0 0 var(--space-base);padding:4px 16px;border:1px solid rgba(255,255,255,.3);color:var(--on-dark-muted);border-radius:999px;font-size:.9rem}
h1{font-family:var(--font-display);font-weight:700;margin:0 0 var(--space-md);font-size:clamp(2rem,5.2vw,3.25rem);line-height:1.5;max-inline-size:18em;text-wrap:balance}
.lede{margin:0 0 var(--space-lg);font-size:1.15rem;color:var(--on-dark-muted);max-inline-size:32em}
.cta{display:flex;flex-wrap:wrap;gap:var(--space-base);margin-bottom:var(--space-lg)}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:var(--space-sm)}
.chips li{padding:2px 16px;border-radius:999px;background:rgba(255,255,255,.08);color:var(--on-dark-muted);font-size:.9rem}

/* brief card */
.brief{background:linear-gradient(160deg,var(--color-primary-soft),var(--color-primary-deep));border:1px solid var(--line-dark);border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:0 24px 60px rgba(5,15,31,.45),0 0 0 1px rgba(43,227,164,.08);position:relative}
.brief::before{content:"";position:absolute;inset-inline-start:var(--space-lg);top:0;width:56px;height:4px;background:var(--grad-accent);border-radius:0 0 4px 4px}
.brief-label{margin:var(--space-sm) 0;color:var(--on-dark-faint);font-size:.85rem;font-weight:600}
.brief h2{font-family:var(--font-display);font-weight:700;font-size:1.25rem;line-height:1.6;margin:0 0 var(--space-base);color:var(--on-dark)}
.brief dl{margin:0;display:grid;gap:var(--space-base)}
.brief dt{font-size:.85rem;color:var(--on-dark-faint);font-weight:600}
.brief dd{margin:0;color:#eef3fb;line-height:1.7;padding-bottom:var(--space-base);border-bottom:1px dashed var(--line-dark)}
.brief dd:last-child{border-bottom:0;padding-bottom:0}

/* sections */
.block{padding-block:var(--space-3xl) var(--space-base)}
.kicker{margin:0 0 var(--space-xs);color:var(--color-secondary);font-weight:700;font-size:.9rem;letter-spacing:.03em}
.kicker.light{color:var(--on-dark-faint)}
h2,h3{text-wrap:balance}
h2{font-family:var(--font-display);font-weight:700;color:var(--color-primary);margin:0 0 var(--space-sm);font-size:clamp(1.55rem,4.2vw,2.2rem);line-height:1.55}
.lead{margin:0 0 var(--space-xl);color:var(--color-muted-foreground);max-inline-size:36em}

/* steps */
.steps{list-style:none;margin:0;padding:0;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;inset-inline-start:27px;top:28px;bottom:28px;width:2px;background:var(--color-border)}
.steps li{counter-increment:s;position:relative;padding-inline-start:84px;padding-bottom:var(--space-lg)}
.steps li:last-child{padding-bottom:0}
.steps li::before{content:counter(s);position:absolute;inset-inline-start:0;top:0;width:56px;height:56px;border-radius:50%;background:var(--grad-accent);color:var(--color-on-accent);display:grid;place-items:center;font-family:system-ui,sans-serif;font-weight:700;font-size:1.25rem;box-shadow:0 0 0 6px var(--color-background)}
.steps h3{margin:0 0 var(--space-xs);font-family:var(--font-display);font-weight:700;font-size:1.2rem;color:var(--color-primary);line-height:1.7}
.steps p{margin:0;color:var(--color-muted-foreground);max-inline-size:38em}

/* proof / principles (dark band) */
.proof{margin-top:var(--space-3xl);background:var(--color-primary);color:var(--on-dark)}
.proof .block{padding-block:var(--space-3xl)}
.proof h2{color:var(--on-dark)}
.proof .lead{color:var(--on-dark-muted)}
.proof-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:var(--space-base)}
.pcard{border:1px solid var(--line-dark);border-radius:var(--radius-md);padding:var(--space-md);background:rgba(255,255,255,.04);transition:background var(--dur-base),border-color var(--dur-base)}
.pcard:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28)}
.pcard b{display:block;font-family:var(--font-display);font-weight:700;color:var(--on-dark);font-size:1.1rem;margin-bottom:var(--space-sm)}
.pcard span{color:var(--on-dark-muted);font-size:.97rem}

/* outcomes */
.out-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--space-base);margin-top:var(--space-md)}
.out-card{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-md);box-shadow:var(--shadow-md);border-top:3px solid var(--color-accent-2)}
.out-card b{display:block;font-family:var(--font-display);font-weight:700;color:var(--color-primary);margin-bottom:var(--space-xs)}
.out-card span{color:var(--color-muted-foreground)}

/* audience */
.aud{margin:var(--space-md) 0 0;padding:0;list-style:none;display:grid;gap:var(--space-base);max-inline-size:44em}
.aud li{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-base) var(--space-md);padding-inline-start:64px;position:relative}
.aud li .ic{position:absolute;inset-inline-start:var(--space-md);top:50%;transform:translateY(-50%);width:28px;height:28px;padding:5px;border-radius:50%;background:var(--color-success-bg);color:var(--color-success-text)}

/* voice */
.voice{margin-top:var(--space-3xl);display:grid;grid-template-columns:auto 1fr;gap:var(--space-xl);align-items:center;background:linear-gradient(135deg,var(--color-primary-soft),var(--color-primary-deep));color:var(--on-dark);border-radius:var(--radius-lg);padding:var(--space-xl)}
.voice h2{color:var(--on-dark)}
.voice p{color:var(--on-dark-muted);margin:0 0 var(--space-md);max-inline-size:34em}
.voice .fine{font-size:.85rem;color:var(--on-dark-faint);margin:var(--space-base) 0 0}
.wave{display:flex;align-items:center;gap:var(--space-sm);height:96px}
.wave i{display:block;width:8px;border-radius:8px;background:var(--on-dark-faint);height:30px;opacity:.7;transform-origin:center;transition:background var(--dur-base),opacity var(--dur-base)}
.wave i:nth-child(2n){height:56px}.wave i:nth-child(3n){height:84px}.wave i:nth-child(4){height:42px}
.voice.live .wave i{background:var(--color-accent);opacity:1}

/* faq */
details{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-xs) var(--space-md);margin-bottom:var(--space-sm);transition:border-color var(--dur-base)}
details:hover,details[open]{border-color:#b3c4d3}
summary{cursor:pointer;font-weight:700;color:var(--color-primary);min-height:52px;display:flex;align-items:center;gap:var(--space-sm);list-style:none}
summary::-webkit-details-marker{display:none}
summary .ic{color:var(--color-secondary);transition:transform var(--dur-base) var(--ease)}
details[open] summary .ic{transform:rotate(45deg)}
details p{margin:0 0 var(--space-base);color:var(--color-muted-foreground);padding-inline-start:26px}
.contact{margin:var(--space-md) 0 var(--space-3xl);color:var(--color-muted-foreground)}

/* final CTA */
.final{background:var(--color-primary);color:var(--on-dark);padding-block:var(--space-2xl)}
.final-in{display:flex;flex-wrap:wrap;gap:var(--space-md);align-items:center;justify-content:space-between}
.final h2{color:var(--on-dark);margin:0 0 var(--space-xs)}
.final p{margin:0;color:var(--on-dark-muted);max-inline-size:34em}
footer{background:var(--color-primary-deep);color:var(--on-dark-faint);padding:var(--space-md) 0;font-size:.85rem;text-align:center}

/* assistant widget */
.assistant{position:fixed;inset-inline-start:16px;bottom:16px;z-index:40}
.fab{width:64px;height:64px;border-radius:50%;border:0;background:var(--grad-accent);color:var(--color-on-accent);cursor:pointer;display:grid;place-items:center;box-shadow:0 10px 26px rgba(2,6,23,.4);transition:transform var(--dur-fast),box-shadow var(--dur-base)}
.fab:hover{box-shadow:0 14px 32px rgba(2,6,23,.5)}.fab:active{transform:scale(.95)}
.panel{position:absolute;bottom:80px;inset-inline-start:0;width:min(370px,calc(100vw - 32px));background:var(--color-card);border-radius:20px;box-shadow:0 18px 44px rgba(2,6,23,.4);overflow:hidden}
.panel:not([hidden]){animation:rise var(--dur-enter) var(--ease) both}
.panel-head{background:var(--color-primary);color:var(--on-dark);display:flex;justify-content:space-between;align-items:center;padding:var(--space-xs) var(--space-base);min-height:52px;font-weight:600}
.panel-head button{background:none;border:0;color:var(--on-dark);cursor:pointer;min-width:44px;min-height:44px;display:grid;place-items:center;border-radius:50%}
.panel-head button:hover{background:rgba(255,255,255,.12)}
.status{padding:12px var(--space-base);color:var(--color-muted-foreground);font-size:.95rem;border-bottom:1px solid var(--color-muted)}
.status.live{color:var(--color-success-text);font-weight:700}.status.err{color:var(--color-destructive)}
.log{max-height:220px;overflow:auto;padding:12px var(--space-base);font-size:.95rem}
.log p{margin:0 0 var(--space-sm)}.log .a{color:var(--color-primary)}.log .u{color:var(--color-muted-foreground)}
.actions{padding:12px var(--space-base) var(--space-base);display:flex;gap:var(--space-sm)}.actions .btn{flex:1}

@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes eq{0%,100%{transform:scaleY(.4)}50%{transform:scaleY(1)}}

/* motion only when allowed; entrance ~480ms, decorative rotation very slow */
@media (prefers-reduced-motion:no-preference){
  .hero-copy>*,.brief{animation:rise var(--dur-enter) var(--ease) both}
  .hero-copy>*:nth-child(2){animation-delay:60ms}.hero-copy>*:nth-child(3){animation-delay:120ms}
  .hero-copy>*:nth-child(4){animation-delay:180ms}.hero-copy>*:nth-child(5){animation-delay:240ms}
  .brief{animation-delay:200ms}
  .rings{animation:spin 120s linear infinite}
  .voice.live .wave i{animation:eq 1.2s ease-in-out infinite}
  .voice.live .wave i:nth-child(2){animation-delay:.1s}.voice.live .wave i:nth-child(3){animation-delay:.2s}.voice.live .wave i:nth-child(4){animation-delay:.3s}
  .voice.live .wave i:nth-child(5){animation-delay:.4s}.voice.live .wave i:nth-child(6){animation-delay:.5s}.voice.live .wave i:nth-child(7){animation-delay:.6s}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.fab,.pcard,details,summary .ic{transition:none}.btn[aria-busy="true"]::after{animation:none}}

/* responsive: 375 / 768 / 1024 / 1440 */
@media (max-width:860px){
  .ringdot{display:none}
  .hero{padding-block:var(--space-2xl)}
  .hero-grid{grid-template-columns:1fr;gap:var(--space-xl)}
  .rings{width:520px;height:520px;inset-inline-end:-230px;top:-80px}
  .voice{grid-template-columns:1fr;padding:var(--space-lg);gap:var(--space-md);margin-top:var(--space-2xl)}
  .wave{height:64px}
  .block{padding-block:var(--space-2xl) var(--space-sm)}
  .proof{margin-top:var(--space-2xl)}.proof .block{padding-block:var(--space-2xl)}
  .contact{margin-bottom:var(--space-2xl)}
  .final-in{flex-direction:column;align-items:stretch;text-align:start}
}
@media (max-width:420px){.cta .btn,.final .btn{width:100%}.steps li{padding-inline-start:72px}.steps li::before{width:48px;height:48px;font-size:1.1rem}.steps::before{inset-inline-start:23px}}
@media (min-width:1440px){.wrap{max-width:1180px}}

/* ===== navigation, paths, course page (v4) ===== */
.nav{display:flex;gap:var(--space-xs);margin-inline:auto var(--space-base)}
.nav a{color:var(--on-dark-muted);text-decoration:none;padding:10px 14px;border-radius:var(--radius-sm);min-height:44px;display:inline-flex;align-items:center;transition:background var(--dur-base),color var(--dur-base)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--on-dark);background:rgba(255,255,255,.1)}
.bar{gap:var(--space-base)}
.logo{margin-inline-end:auto}
.nav{margin-inline:0}
.btn.secondary{background:var(--color-card);color:var(--color-primary);border:1.5px solid var(--color-primary)}
.btn.secondary:hover{background:var(--color-primary);color:var(--on-dark)}

.strip{background:var(--color-card);border-block:1px solid var(--color-border)}
.strip-in{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-base) var(--space-md);padding-block:var(--space-base)}
.strip-in>span{color:var(--color-muted-foreground);font-weight:600}
.strip ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:var(--space-sm) var(--space-md)}
.strip li{color:var(--color-primary);font-weight:600;padding-inline-start:16px;position:relative}
.strip li::before{content:"";position:absolute;inset-inline-start:0;top:50%;width:8px;height:8px;border-radius:50%;background:var(--color-primary);transform:translateY(-50%)}

.paths{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-base)}
.path{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm);box-shadow:var(--shadow-md);border-top:4px solid var(--color-accent-2)}
.path h3{margin:0;font-family:var(--font-display);font-weight:700;font-size:1.35rem;color:var(--color-primary)}
.path p{margin:0 0 var(--space-sm);color:var(--color-muted-foreground);flex:1}
.path .btn{align-self:flex-start}
.path.soon{background:transparent;box-shadow:none;border:1.5px dashed #a9b9ca;border-top:1.5px dashed #a9b9ca}
.tag{align-self:flex-start;background:var(--color-success-bg);color:var(--color-success-text);border-radius:999px;padding:2px 14px;font-size:.85rem;font-weight:700}
.tag.muted{background:var(--color-muted);color:var(--color-muted-foreground)}

.foot{display:flex;flex-wrap:wrap;gap:var(--space-sm) var(--space-md);align-items:center;justify-content:space-between;text-align:start}
.foot span{color:var(--on-dark);font-family:var(--font-display);font-weight:700}
.foot nav{display:flex;flex-wrap:wrap;gap:var(--space-xs)}
.foot nav a{color:var(--on-dark-faint);text-decoration:none;padding:10px 12px;min-height:44px;display:inline-flex;align-items:center}
.foot nav a:hover{color:var(--on-dark)}
.foot small{flex-basis:100%;font-size:.8rem;color:var(--on-dark-faint)}

/* course page */
.chero{background:radial-gradient(900px 480px at 85% -20%,var(--color-primary-soft),transparent 62%),var(--color-primary);color:var(--on-dark);padding-block:var(--space-2xl)}
.crumbs{display:flex;gap:var(--space-sm);align-items:center;color:var(--on-dark-faint);font-size:.9rem;margin-bottom:var(--space-md)}
.crumbs a{color:var(--on-dark-muted);text-decoration:none;padding:10px 0;min-height:44px;display:inline-flex;align-items:center}
.crumbs a:hover{color:var(--on-dark)}
.chero h1{font-size:clamp(1.8rem,4.6vw,2.8rem);max-inline-size:20em}
.meta{list-style:none;margin:0 0 var(--space-lg);padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:var(--space-base);max-inline-size:760px}
.meta li{border:1px solid var(--line-dark);border-radius:var(--radius-sm);padding:var(--space-sm) var(--space-base);background:rgba(255,255,255,.04)}
.meta b{display:block;font-size:.8rem;color:var(--on-dark-faint);font-weight:600}
.meta span{color:var(--on-dark)}
.learn{list-style:none;margin:var(--space-md) 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-base)}
.learn li{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-base) var(--space-md);padding-inline-start:64px;position:relative}
.learn li .ic{position:absolute;inset-inline-start:var(--space-md);top:var(--space-base);width:28px;height:28px;padding:5px;border-radius:50%;background:var(--color-success-bg);color:var(--color-success-text)}
.syl details{padding:var(--space-xs) var(--space-md)}
.syl summary .unum{flex:none;width:32px;height:32px;border-radius:50%;background:var(--grad-accent);color:var(--color-on-accent);display:grid;place-items:center;font-size:.95rem;font-family:system-ui,sans-serif}
.ubody{padding:0 0 var(--space-base);padding-inline-start:calc(26px + var(--space-sm))}
.ubody p{margin:0 0 var(--space-sm);padding:0;color:var(--color-muted-foreground)}
.ubody b{color:var(--color-primary)}
.ubody .vid{display:inline-block;background:var(--color-muted);color:var(--color-muted-foreground);border-radius:var(--radius-sm);padding:4px var(--space-base);font-size:.9rem}
.req-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--space-base)}
.page-course .out{margin-top:var(--space-3xl);background:var(--color-primary);color:var(--on-dark)}
.page-course .out .block{padding-block:var(--space-2xl)}

@media (max-width:860px){.nav{display:none}.chero{padding-block:var(--space-xl)}.page-course .out{margin-top:var(--space-2xl)}}
@media (max-width:420px){.learn{grid-template-columns:1fr}}

/* ===== video section (v5) ===== */
.vid{margin:0;max-inline-size:900px}
.vid video{display:block;width:100%;aspect-ratio:16/9;background:var(--color-primary-deep);border-radius:var(--radius-lg);box-shadow:0 24px 60px rgba(5,15,31,.3),0 0 0 1px var(--color-border)}
.vid figcaption{margin-top:var(--space-sm);color:var(--color-muted-foreground);font-size:.9rem}
.vid video::cue{font-family:var(--font-body);font-size:1.1em;line-height:1.6}

/* email help section */
.help-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:var(--space-xl);align-items:start}
.mail{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);overflow:hidden;border-top:3px solid var(--color-accent-2)}
.mail-head{display:flex;justify-content:space-between;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--color-muted);color:var(--color-primary);font-size:.9rem}
.mail-head span{color:var(--color-muted-foreground)}
.mail p{margin:0;padding:var(--space-sm) var(--space-md)}
.mail .mail-meta{color:var(--color-muted-foreground);font-size:.88rem;border-bottom:1px solid var(--color-border)}
.mail mark{background:var(--color-success-bg);color:var(--color-success-text);border:1.5px dashed var(--color-success-text);border-radius:6px;padding:0 6px;font-weight:700}
.mail .mail-note{background:var(--color-muted);color:var(--color-primary);font-size:.92rem;margin-top:var(--space-sm)}
.help-list{list-style:none;margin:0;padding:0;display:grid;gap:var(--space-sm)}
.help-list li{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-base) var(--space-md);border-inline-start:3px solid var(--color-accent)}
.help-list b{display:block;font-family:var(--font-display);color:var(--color-primary);margin-bottom:2px}
.help-list span{color:var(--color-muted-foreground)}
.proof.why{margin-top:var(--space-2xl,48px)}
@media (max-width:820px){.help-grid{grid-template-columns:1fr}}