:root{--grain-img:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");}
/* ============================================================
   AI Bytes Care — state-of-the-art layer
   Loads after styles.css
   ============================================================ */

/* --- Typography refinement --- */
.eyebrow,.stat-row__label,.lesson__time,.course-card__num,.timeline__when,
.reg-map__reg,.course-card__facts,.trust__list,.scenario__num,.tag,.crumb,
.course-hero__facts li,.footer__meta,.review-note{
  font-family:var(--font-mono);font-weight:500;
}
.hero__eyebrow{font-family:var(--font-mono);}
h1,h2{font-variation-settings:'opsz' 96,'wght' 800;}
h3{font-variation-settings:'opsz' 32,'wght' 700;}
h4{font-family:var(--font-display);font-variation-settings:'opsz' 18,'wght' 700;}

/* --- Film grain --- */
.grain{
  position:fixed;inset:-50%;z-index:200;pointer-events:none;opacity:.03;
  background-image:var(--grain-img);
  animation:grainShift 8s steps(10) infinite;
  will-change:transform;
}
@keyframes grainShift{
  0%,100%{transform:translate(0,0);}
  10%{transform:translate(-2%,-3%);}
  20%{transform:translate(-4%,2%);}
  30%{transform:translate(2%,-4%);}
  40%{transform:translate(-1%,3%);}
  50%{transform:translate(-3%,1%);}
  60%{transform:translate(3%,0);}
  70%{transform:translate(0,2%);}
  80%{transform:translate(-2%,-1%);}
  90%{transform:translate(1%,-2%);}
}

/* --- Page-load curtain --- */
.curtain{
  position:fixed;inset:0;z-index:300;background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  transition:clip-path 1.05s cubic-bezier(.76,0,.24,1),opacity .35s ease .85s;
  clip-path:inset(0 0 0 0);
}
.curtain.is-done{clip-path:inset(0 0 100% 0);opacity:0;pointer-events:none;}
.curtain__mark{width:44px;height:44px;color:var(--teal);animation:markPulse 1.3s ease-in-out infinite;}
@keyframes markPulse{
  0%,100%{opacity:.3;transform:scale(.93);}
  50%{opacity:1;transform:scale(1.05);}
}

/* --- Magnetic cursor --- */
.cursor{
  position:fixed;top:0;left:0;z-index:250;pointer-events:none;
  width:8px;height:8px;border-radius:50%;background:var(--teal);
  transform:translate(-50%,-50%);
}
.cursor-ring{
  position:fixed;top:0;left:0;z-index:249;pointer-events:none;
  width:36px;height:36px;border-radius:50%;
  border:1.5px solid rgba(47,201,184,.5);
  transform:translate(-50%,-50%);
  transition:width .28s var(--ease),height .28s var(--ease),border-color .28s var(--ease),background .28s var(--ease);
}
.cursor-ring.is-active{
  width:64px;height:64px;border-color:rgba(255,122,69,.75);background:rgba(255,122,69,.08);
}
@media (hover:none),(pointer:coarse){.cursor,.cursor-ring{display:none;}}

@media (prefers-reduced-motion: reduce){
  .curtain{display:none;}
  .grain{animation:none;}
  .cursor,.cursor-ring{display:none;}
}

/* --- Magnetic button sheen --- */
.btn{will-change:transform;position:relative;overflow:hidden;}
.btn::after{
  content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.3),transparent 62%);
  opacity:0;transition:opacity .3s;
}
.btn:hover::after{opacity:1;}

/* --- Clip-path reveal --- */
.clip-reveal{clip-path:inset(0 0 100% 0);transition:clip-path 1s cubic-bezier(.76,0,.24,1);}
.clip-reveal.is-visible{clip-path:inset(0 0 0 0);}

/* --- Line-mask headline --- */
.mask-lines .mask-line{overflow:hidden;display:block;padding-bottom:.04em;}
.mask-lines .mask-line > span{
  display:block;transform:translateY(106%);
  transition:transform .95s cubic-bezier(.76,0,.24,1);
}
.mask-lines.is-visible .mask-line > span{transform:translateY(0);}
.mask-lines.is-visible .mask-line:nth-child(2) > span{transition-delay:.08s;}
.mask-lines.is-visible .mask-line:nth-child(3) > span{transition-delay:.16s;}

/* --- Marquee --- */
.marquee{
  overflow:hidden;background:var(--ink);color:var(--white);
  border-top:1px solid var(--ink-line);border-bottom:1px solid var(--ink-line);
  padding:1.05rem 0;
}
.marquee__track{display:flex;gap:3rem;width:max-content;animation:marqueeRun 46s linear infinite;}
.marquee:hover .marquee__track{animation-play-state:paused;}
.marquee__item{
  display:flex;align-items:center;gap:3rem;
  font-family:var(--font-mono);font-size:.8rem;letter-spacing:.1em;
  color:rgba(255,255,255,.6);white-space:nowrap;
}
.marquee__item::after{content:'';width:5px;height:5px;border-radius:50%;background:var(--teal);flex-shrink:0;}
@keyframes marqueeRun{to{transform:translateX(-50%);}}
@media (prefers-reduced-motion: reduce){.marquee__track{animation:none;}}

.counter{font-variant-numeric:tabular-nums;}

/* --- Infographic shell --- */
.info{
  max-width:var(--container);margin:0 auto clamp(2.5rem,5vw,4rem);
  background:var(--ink);border-radius:var(--radius);overflow:hidden;
  position:relative;color:var(--white);
}
.info--paper{background:var(--paper-card);border:1px solid var(--paper-line);color:var(--ink);}
.info__head{
  padding:clamp(1.75rem,3.5vw,2.5rem) clamp(1.75rem,3.5vw,2.5rem) 0;
  display:flex;justify-content:space-between;align-items:flex-start;gap:1.5rem;flex-wrap:wrap;
}
.info__label{
  font-family:var(--font-mono);font-size:.73rem;letter-spacing:.14em;
  color:var(--teal);
}
.info__title{font-size:clamp(1.35rem,2.5vw,2rem);margin:.6rem 0 0;}
.info__sub{font-size:.94rem;color:rgba(255,255,255,.62);margin-top:.7rem;max-width:540px;}
.info--paper .info__sub{color:var(--slate);}
.info__body{padding:clamp(1.5rem,3vw,2.5rem);}
.info__foot{
  padding:0 clamp(1.75rem,3.5vw,2.5rem) clamp(1.5rem,3vw,2rem);
  font-family:var(--font-mono);font-size:.71rem;letter-spacing:.05em;color:rgba(255,255,255,.4);
}
.info--paper .info__foot{color:var(--slate-soft);}

/* --- Radial dial --- */
.dial{display:grid;grid-template-columns:auto 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:center;}
.dial__svg{width:100%;max-width:320px;height:auto;overflow:visible;}
.dial__seg{
  fill:none;stroke-width:14;stroke-linecap:butt;cursor:pointer;
  transition:stroke .3s,opacity .3s,stroke-width .3s;
  opacity:.38;stroke:rgba(255,255,255,.45);
  stroke-dasharray:var(--len);stroke-dashoffset:var(--len);
}
.dial.is-visible .dial__seg{animation:dialDraw 1.1s cubic-bezier(.76,0,.24,1) forwards;}
.dial.is-visible .dial__seg:nth-child(2){animation-delay:.06s;}
.dial.is-visible .dial__seg:nth-child(3){animation-delay:.12s;}
.dial.is-visible .dial__seg:nth-child(4){animation-delay:.18s;}
.dial.is-visible .dial__seg:nth-child(5){animation-delay:.24s;}
.dial.is-visible .dial__seg:nth-child(6){animation-delay:.30s;}
.dial.is-visible .dial__seg:nth-child(7){animation-delay:.36s;}
.dial.is-visible .dial__seg:nth-child(8){animation-delay:.42s;}
.dial.is-visible .dial__seg:nth-child(9){animation-delay:.48s;}
@keyframes dialDraw{to{stroke-dashoffset:0;}}
.dial__seg.is-hot{opacity:1;stroke:var(--amber);stroke-width:18;}
.dial__seg.is-focus{opacity:1;stroke:var(--teal);stroke-width:18;}
.dial__hub{fill:none;stroke:rgba(255,255,255,.14);stroke-width:1;}
.dial__hubT{font-family:var(--font-display);font-variation-settings:'opsz' 48,'wght' 800;font-size:34px;fill:#fff;}
.dial__hubL{font-family:var(--font-mono);font-size:8.5px;letter-spacing:.14em;fill:rgba(255,255,255,.5);}
.dial__list{display:flex;flex-direction:column;gap:.08rem;}
.dial__row{
  display:flex;align-items:baseline;gap:.85rem;
  padding:.48rem .7rem;border-radius:8px;cursor:pointer;
  transition:background .25s,border-color .25s;border-left:2px solid transparent;
  text-align:left;background:none;border-top:0;border-right:0;border-bottom:0;color:inherit;width:100%;
}
.dial__row:hover,.dial__row.is-active{background:rgba(255,255,255,.07);border-left-color:var(--teal);}
.dial__row.is-hot{border-left-color:var(--amber);}
.dial__reg{font-family:var(--font-mono);font-size:.71rem;color:var(--amber);min-width:3.8rem;flex-shrink:0;}
.dial__name{font-size:.93rem;font-weight:500;color:rgba(255,255,255,.88);}
@media (max-width:760px){
  .dial{grid-template-columns:1fr;}
  .dial__svg{max-width:240px;margin:0 auto;}
}

/* --- Bar chart --- */
.bars{display:flex;align-items:flex-end;gap:clamp(.5rem,2vw,1.4rem);height:240px;}
.bars__col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:.55rem;height:100%;}
.bars__bar{
  width:100%;max-width:70px;border-radius:7px 7px 3px 3px;
  background:linear-gradient(180deg,var(--teal),rgba(47,201,184,.25));
  height:0;transition:height 1.05s cubic-bezier(.76,0,.24,1);
}
.bars__col--hot .bars__bar{background:linear-gradient(180deg,var(--amber),rgba(255,122,69,.25));}
.bars__val{font-family:var(--font-mono);font-size:.79rem;color:rgba(255,255,255,.78);}
.bars__lab{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.05em;color:rgba(255,255,255,.48);text-align:center;}

/* --- Matrix --- */
.matrix{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;}
.matrix__side{border-radius:14px;padding:1.5rem;border:1px solid;}
.matrix__side--yes{background:rgba(47,201,184,.075);border-color:rgba(47,201,184,.35);}
.matrix__side--no{background:rgba(255,122,69,.075);border-color:rgba(255,122,69,.38);}
.matrix__head{
  display:flex;align-items:center;gap:.6rem;margin-bottom:1.1rem;
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.1em;
}
.matrix__side--yes .matrix__head{color:var(--teal);}
.matrix__side--no .matrix__head{color:var(--amber);}
.matrix__icon{width:19px;height:19px;flex-shrink:0;}
.matrix__list{display:flex;flex-direction:column;gap:.7rem;}
.matrix__list li{font-size:.92rem;color:rgba(255,255,255,.8);padding-left:1.1rem;position:relative;}
.matrix__list li::before{content:'';position:absolute;left:0;top:.55em;width:5px;height:5px;border-radius:50%;}
.matrix__side--yes .matrix__list li::before{background:var(--teal);}
.matrix__side--no .matrix__list li::before{background:var(--amber);}
@media (max-width:760px){.matrix{grid-template-columns:1fr;}}

/* --- Horizontal gallery --- */
.hscroll{
  display:flex;gap:1.25rem;overflow-x:auto;overflow-y:hidden;
  padding:.5rem clamp(1.25rem,4vw,3rem) 1.75rem;
  scroll-snap-type:x proximity;
  scrollbar-width:thin;scrollbar-color:rgba(47,201,184,.5) transparent;
}
.hscroll::-webkit-scrollbar{height:5px;}
.hscroll::-webkit-scrollbar-thumb{background:rgba(47,201,184,.5);border-radius:99px;}
.hscroll::-webkit-scrollbar-track{background:transparent;}
.hscroll > *{scroll-snap-align:start;flex:0 0 min(84vw,375px);}

/* --- Video card --- */
.vcard{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:var(--ink);aspect-ratio:16/10;display:block;
}
.vcard video,.vcard__img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .8s var(--ease),opacity .55s ease;
}
.vcard video{opacity:0;}
.vcard.is-playing video{opacity:1;}
.vcard:hover .vcard__img{transform:scale(1.06);}
.vcard__veil{
  position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(10,12,15,.94) 0%,rgba(10,12,15,.4) 48%,rgba(10,12,15,.08) 100%);
}
.vcard__inner{position:absolute;inset:auto 0 0 0;padding:1.5rem;color:var(--white);}
.vcard__num{
  font-family:var(--font-mono);font-size:.71rem;letter-spacing:.12em;
  color:var(--teal);display:block;margin-bottom:.5rem;
}
.vcard__inner h3{font-size:1.15rem;margin-bottom:.35rem;}
.vcard__inner p{font-size:.87rem;color:rgba(255,255,255,.72);}
.vcard__play{
  position:absolute;top:1.05rem;right:1.05rem;
  width:32px;height:32px;border-radius:50%;
  background:rgba(255,255,255,.13);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--white);opacity:0;transition:opacity .3s;
}
.vcard:hover .vcard__play{opacity:1;}

/* --- Sticky rail --- */
.rail{position:sticky;top:7rem;align-self:start;}
.rail__title{
  font-family:var(--font-mono);font-size:.71rem;letter-spacing:.14em;
  color:var(--slate-soft);margin-bottom:.9rem;
}
.rail__list{display:flex;flex-direction:column;gap:.1rem;}
.rail__list a{
  display:flex;gap:.65rem;align-items:baseline;
  padding:.46rem .6rem;border-radius:8px;font-size:.88rem;
  color:var(--slate);border-left:2px solid transparent;
  transition:background .25s,color .25s,border-color .25s;
}
.rail__list a:hover,.rail__list a.is-current{
  background:rgba(47,201,184,.09);color:var(--ink);border-left-color:var(--teal);
}
.rail__n{font-family:var(--font-mono);font-size:.72rem;color:var(--amber);}
@media (max-width:1000px){.rail{display:none;}}

.lesson-wrap{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:210px 1fr;gap:clamp(1.5rem,3vw,3rem);
}
.lesson-wrap .lesson{max-width:none;margin-left:0;margin-right:0;}
@media (max-width:1000px){.lesson-wrap{grid-template-columns:1fr;}}

.px{will-change:transform;}

/* --- Media wrapper: image + video loop in the same box --------------------
   Used on homepage feature cards, course cards and lesson figures. The image
   is the poster and the fallback; the video fades over it once playing. */
.mv{display:block;position:relative;overflow:hidden;background:var(--ink);}
.mv > img,.mv > video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:opacity .6s ease,transform .8s var(--ease);
}
.mv > video{opacity:0;}
.mv.is-playing > video{opacity:1;}
.mv__badge{
  position:absolute;top:.7rem;left:.7rem;z-index:2;
  display:flex;align-items:center;gap:.35rem;
  padding:.28rem .55rem;border-radius:99px;
  background:rgba(10,12,15,.55);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.18);
  font-family:var(--font-mono);font-size:.6rem;letter-spacing:.1em;
  color:rgba(255,255,255,.8);
  opacity:0;transition:opacity .4s ease;
}
.mv.is-playing .mv__badge{opacity:1;}
.mv__badge::before{
  content:'';width:5px;height:5px;border-radius:50%;background:var(--teal);
  animation:livePulse 1.8s ease-in-out infinite;
}
@keyframes livePulse{0%,100%{opacity:.35;}50%{opacity:1;}}

/* visual-card (homepage) becomes a media wrapper */
.visual-card.mv > img,.visual-card.mv > video{border-radius:inherit;}
.visual-card.mv::before{z-index:1;pointer-events:none;}

/* course hero: scrim must stay above the video layer */
.course-hero__media.mv .course-hero__scrim{z-index:2;}
.course-hero__media.mv > img,.course-hero__media.mv > video{z-index:1;}

/* lesson figure video */
.lesson__figure .mv{aspect-ratio:4/3;border-radius:14px;border:1px solid var(--paper-line);}
.lesson__figure .mv > img,.lesson__figure .mv > video{border-radius:inherit;}

/* course card media video */
.course-card__media.mv{aspect-ratio:16/9;}
.course-card--flagship .course-card__media.mv{aspect-ratio:21/9;}

@media (prefers-reduced-motion: reduce){
  .mv > video{display:none;}
  .mv__badge{display:none;}
}

/* --- Big number plates --- */
.plates{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));
  gap:1px;background:var(--paper-line);border:1px solid var(--paper-line);
  border-radius:var(--radius);overflow:hidden;
}
.plate{background:var(--paper-card);padding:clamp(1.4rem,3vw,2.1rem);}
.plate__n{
  font-family:var(--font-display);font-variation-settings:'opsz' 96,'wght' 800;
  font-size:clamp(2.2rem,4.6vw,3.4rem);line-height:1;letter-spacing:-.045em;
  color:var(--ink);display:block;margin-bottom:.55rem;
}
.plate__n em{color:var(--teal);font-style:normal;}
.plate__l{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--slate-soft);}
.plate__d{font-size:.87rem;color:var(--slate);margin-top:.6rem;}

/* --- Section watermark --- */
.section{position:relative;}
.wm{
  position:absolute;top:clamp(1rem,4vw,3rem);right:clamp(1rem,4vw,3rem);
  font-family:var(--font-display);font-variation-settings:'opsz' 96,'wght' 800;
  font-size:clamp(3.5rem,11vw,9rem);line-height:1;letter-spacing:-.05em;
  color:var(--ink);opacity:.035;pointer-events:none;user-select:none;z-index:0;
}
.section--dark .wm{color:var(--white);opacity:.05;}
.section > *:not(.wm){position:relative;z-index:1;}

/* --- Flow diagram (escalation) --- */
.flow__svg{width:100%;height:auto;overflow:visible;}
.flow-line{
  fill:none;stroke:var(--amber);stroke-width:2.5;stroke-linecap:round;
  stroke-dasharray:var(--len);stroke-dashoffset:var(--len);
}
.is-visible .flow-line{animation:flowDraw 1.8s cubic-bezier(.4,0,.3,1) forwards;}
@keyframes flowDraw{to{stroke-dashoffset:0;}}
.flow-band{fill:rgba(47,201,184,.09);stroke:rgba(47,201,184,.3);stroke-width:1;}
.flow-t{font-family:var(--font-mono);font-size:9px;fill:rgba(255,255,255,.6);letter-spacing:.04em;}
.flow-t--b{font-size:10px;fill:#fff;font-weight:500;}
.flow-t--hot{fill:var(--amber);}
.flow-t--good{fill:var(--teal);}
.flow-tick{stroke:rgba(255,255,255,.18);stroke-width:1;stroke-dasharray:2 3;}
.flow-dot{fill:var(--amber);}
.is-visible .flow-dot{animation:flowPop .4s ease forwards;transform-box:fill-box;transform-origin:center;}
@keyframes flowPop{from{transform:scale(0);}to{transform:scale(1);}}