/* =========================================================
   FLAR3 fx layer — intro, page wipes, ambient background, kinetic type, legibility.
   The curtain is CSS-driven, so the page always opens even if a script fails.
   ========================================================= */

/* ---------- legibility: larger labels, no tiny tracked caps ---------- */
.kicker{font-size:.8rem;letter-spacing:.14em;font-weight:500;color:var(--soft)}
.tag{font-size:.72rem;letter-spacing:.06em;font-weight:500;padding:.3rem .7rem}
.card .num,.pillar .pnum,.stream .sn,.ws-top .wn,.steps li::before{font-size:.8rem;font-weight:600;letter-spacing:.06em}
.illus,.matrix .mh,.prio,.fs-k,.alt-title,.tbl th,.tl-k,.scene .sn,.phase .when,.mcol h3 span,.mrow span,.layer .ln,.critical .cl,.site-foot h4,.demo-row .st,.layer-stack div,.steps li small,.pron,.scroll-hint{font-size:.74rem;font-weight:500}
.spec dt,.carrow span,.gatebox b,.deps-row,.hold .core span{font-size:.68rem;font-weight:500}
.foot-base{font-size:.72rem;letter-spacing:.06em}
.card p,.pillar p,.row-item p,.frame-body p,.alt p,.ws p,.engine p,.stream p,.lrow p,.gate p,.type p,.flow-step p,.stat p{font-size:.92rem;line-height:1.55}
.list li,.checks li,.mitem{font-size:.9rem}
.lede{font-size:1.12rem;color:var(--soft)}
.note{font-size:.88rem}
.hero-sub{font-size:1.15rem}
.btn{font-size:.92rem}
.btn.sm{font-size:.84rem}
.title{font-size:clamp(2.1rem,4.4vw,3.6rem);letter-spacing:-.03em}
.sos-strip{font-size:.82rem}

/* ---------- curtain: first-visit intro and page-to-page wipe ---------- */
.curtain{position:fixed;inset:0;z-index:200;background:#0a0a0c;display:grid;place-items:center;pointer-events:none;transform:translateY(100%);visibility:hidden}
.curtain::before{content:"";position:absolute;inset:0;background:radial-gradient(40rem 30rem at 50% 50%,rgba(255,91,53,.18),transparent 65%)}
.curtain-core{position:relative;display:flex;flex-direction:column;align-items:center;gap:1rem;opacity:0}
.curtain svg{width:7.5rem;height:7.5rem;overflow:visible}
.curtain svg circle{fill:none;stroke:#ff5b35;stroke-width:1.5;transform-origin:60px 60px}
.curtain .cdot{fill:#ff5b35;stroke:none;filter:drop-shadow(0 0 12px #ff5b35)}
.curtain b{font-family:var(--display);font-weight:700;font-size:2.4rem;letter-spacing:-.04em;line-height:1}
.curtain b span{color:var(--accent)}
.curtain small{font-family:var(--serif);font-style:italic;font-size:1.2rem;color:var(--soft)}
/* first visit: ignite, then lift */
.intro .curtain{visibility:visible;transform:none;animation:curtainUp .9s cubic-bezier(.8,0,.2,1) 1.1s forwards}
.intro .curtain-core{animation:coreIn .5s var(--ease) .05s forwards,coreOut .4s ease-in .85s forwards}
.intro .curtain .cdot{animation:ignite .5s cubic-bezier(.3,1.8,.5,1) both}
.intro .curtain .cr1{animation:ring 1.2s var(--ease) .15s both}
.intro .curtain .cr2{animation:ring 1.2s var(--ease) .3s both}
.intro .curtain .cr3{animation:ring 1.2s var(--ease) .45s both}
/* arriving from another page: start covered, lift */
.enter .curtain{visibility:visible;transform:none;animation:curtainUp .75s cubic-bezier(.8,0,.2,1) .05s forwards}
/* leaving: drop the curtain in from below */
.leaving .curtain{visibility:visible;animation:curtainIn .6s cubic-bezier(.8,0,.2,1) forwards}
@keyframes curtainUp{0%{transform:none;clip-path:inset(0 0 0 0)}100%{transform:translateY(-100%);clip-path:inset(0 0 30% 0);visibility:hidden}}
@keyframes curtainIn{from{transform:translateY(100%)}to{transform:none}}
@keyframes coreIn{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}
@keyframes coreOut{to{opacity:0;transform:translateY(-30px)}}
@keyframes ignite{from{transform:scale(0)}to{transform:none}}
@keyframes ring{0%{transform:scale(.2);opacity:0}30%{opacity:1}100%{transform:scale(1);opacity:.25}}

/* ---------- film grain (ambient orbs come from glass.css) ---------- */
.grain{position:fixed;inset:-50%;z-index:80;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");animation:grain 1s steps(6) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-5%,3%)}40%{transform:translate(4%,-6%)}60%{transform:translate(-3%,5%)}80%{transform:translate(6%,2%)}100%{transform:translate(0,0)}}

/* ---------- section entry line ---------- */
.section::after{content:"";position:absolute;left:0;top:-1px;height:1px;width:100%;background:linear-gradient(90deg,transparent,var(--accent) 30%,#ff9a6b 50%,var(--violet) 70%,transparent);transform:scaleX(0);transform-origin:left;transition:transform 1.6s var(--ease);pointer-events:none}
.section.line-in::after{transform:scaleX(1)}

/* ---------- kinetic type: words rise out of a mask ---------- */
.w{display:inline-block;overflow:hidden;vertical-align:top;padding:0 .08em .14em;margin:0 -.08em -.14em}
.wi{display:inline-block;will-change:transform}
.fx .split-pending{visibility:hidden}

/* ---------- hero upgrades ---------- */
.hero{isolation:isolate}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center;width:100%}
.hero-phone{position:relative;display:flex;justify-content:center;perspective:1400px}
.hero-phone .lphone{transform:rotateY(-14deg) rotateX(6deg) rotateZ(1.5deg);transition:transform .9s var(--ease)}
.hero-phone:hover .lphone{transform:rotateY(-4deg) rotateX(2deg)}
.hero-art g.spin{transform-origin:400px 400px;animation:spin 60s linear infinite}
.hero-art g.spin.rev{animation-duration:90s;animation-direction:reverse}
.hero-phone .hero-art{right:auto;left:50%;top:50%;width:min(60rem,160%);transform:translate(-50%,-50%);z-index:-1}
.wordmark{font-size:min(9rem,19vw)}
@media (max-width:1100px){.hero-grid{grid-template-columns:1fr;gap:2.5rem}.hero-phone .hero-art{width:min(48rem,170vw);opacity:.7}}
@media (max-width:860px){.hero-phone .lphone{transform:none}.hero-phone{margin-top:1rem}}

/* ---------- page-hero constellation canvas ---------- */
.page-hero .const{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.9}

/* ---------- "No ads. Ever." outline → fill ---------- */
.stand em{-webkit-text-stroke:1.5px var(--accent);color:transparent;background:linear-gradient(90deg,var(--accent) 50%,transparent 50%);background-size:200% 100%;background-position:100% 0;-webkit-background-clip:text;background-clip:text;transition:background-position 1.6s var(--ease) .6s}
.stand.in em{background-position:0 0}

/* ---------- footer giant wordmark ---------- */
.foot-mark{display:flex;justify-content:space-between;font-family:var(--display);font-weight:700;font-size:clamp(5rem,22vw,20rem);line-height:.8;letter-spacing:-.06em;margin:3rem 0 0;overflow:hidden;user-select:none;padding-bottom:.04em}
.foot-mark span{display:inline-block;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.14);transition:color .5s,-webkit-text-stroke-color .5s}
.foot-mark span:hover{color:var(--text)}
.foot-mark .three{-webkit-text-stroke-color:var(--accent-line)}
.foot-mark .three:hover{color:var(--accent)}

/* ---------- buttons: arrow nudge + ripple ---------- */
.btn .i{transition:transform .35s var(--ease)}
.btn:hover .i:last-child{transform:translateX(3px)}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.35);transform:scale(0);animation:rip .7s ease-out forwards;pointer-events:none}
@keyframes rip{to{transform:scale(4);opacity:0}}
.btn{position:relative;overflow:hidden}

/* ---------- nav text roll ---------- */
.roll{display:inline-block;position:relative;overflow:hidden;vertical-align:top}
.roll::after{content:attr(data-t);position:absolute;left:0;top:100%;color:var(--accent)}
.roll{transition:none}
.nav a .roll>span,.nav a .roll{line-height:1.3}
.nav a:hover .roll{animation:rollUp .5s var(--ease)}
@keyframes rollUp{0%{transform:none}49%{transform:translateY(-100%)}50%{transform:translateY(100%)}100%{transform:none}}

/* ---------- cursor trail sparks ---------- */
.spark{position:fixed;left:0;top:0;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;pointer-events:none;z-index:59;background:var(--accent);box-shadow:0 0 10px 2px rgba(255,91,53,.6);animation:sparkOut .8s ease-out forwards}
@keyframes sparkOut{to{opacity:0;transform:translate(var(--dx),var(--dy)) scale(.2)}}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  .curtain,.grain{display:none}
  .section::after{transform:scaleX(1)}
  .stand em{background-position:0 0}
}

/* ---------- feature cards ---------- */
.feature{border-radius:var(--r);padding:1.3rem;display:flex;flex-direction:column;gap:.6rem;transition:border-color .3s,transform .4s var(--ease)}
.feature h3{font-family:var(--display);font-weight:500;font-size:1.12rem;line-height:1.25}
.feature p{font-size:.92rem;color:var(--muted)}
.feature .tag{align-self:flex-start;margin-top:auto}
.feature:hover{border-color:var(--accent-line)}
.soon{opacity:.85}