/* REVAON corporate site. One stylesheet for the home page, document pages and the intro.
   Tokens follow docs/DESIGN_HIERARCHY_v4.md: 3 neutral surfaces + one accent, five type steps, 8px spacing.
   Radius steps (15_디자인_원칙_계층.md §4): buttons 6px, panels 12px; sections and frames stay square. */
:root{
 /* colour: surfaces, lines, three text levels, one accent */
 --void:#000;--surface:#0B0B0D;--raise:#141518;--line:#25272C;
 --ink:#F4F4F2;--soft:#C3C6CC;--ash:#8D9199;--dim:#8D9199;--on:#F23F52;
 /* type: display / title / lead / body / caption */
 --t-display:clamp(40px,5.4vw,92px);--t-title:clamp(26px,2.4vw,36px);--t-lead:clamp(19px,1.5vw,23px);--t-body:17px;--t-cap:13px;
 /* spacing on an 8px grid */
 --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s6:48px;--s8:64px;--s12:96px;--s16:128px;--s24:192px;
 --font:"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;
 --gut:clamp(20px,5vw,80px);--max:1680px;--r-btn:6px;--r-panel:12px;--horizon:36%;--ease:cubic-bezier(.2,.7,.2,1);
 color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--void);color:var(--ink);font:400 var(--t-body)/1.7 var(--font);word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3,p,dl,dd,figure{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--on);outline-offset:3px;border-radius:2px}
.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:var(--ink);color:#000;padding:12px 16px;font-weight:700;text-decoration:none}
.skip-link:focus{top:16px}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gut)}

/* World: the intro's 3D place, kept alive behind the page */
#world{position:fixed;inset:0;z-index:0;width:100%;height:100%;opacity:0;transition:opacity 1.2s ease;pointer-events:none}
.world-ready #world{opacity:1}
.intro-diving #world{z-index:101;opacity:1;transition:opacity .6s ease}
.world-scrim{position:fixed;inset:0;z-index:0;background:#000;opacity:0;pointer-events:none}
.world-ready .world-scrim{opacity:calc(var(--scrim,0) * .8)} /* text sits on a dark veil once the hero has scrolled away */
.world-ready .horizon{display:none}
.fx-simple #world,.fx-simple .world-scrim{display:none}
main,.site-footer{position:relative;z-index:1}
main{overflow-x:clip}   /* the soft fields behind text may reach past the edge; they never cause a sideways scroll */

/* Buttons: primary (filled), ghost (outline), text link. States: hover, focus, active, disabled. */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:0 var(--s3);border:1px solid transparent;border-radius:var(--r-btn);font:700 16px/1 var(--font);text-decoration:none;white-space:nowrap;overflow:hidden;
 transition:transform .2s var(--ease),background-color .2s,color .2s,border-color .2s;will-change:transform}
.btn-primary{background:var(--ink);color:#000}
.btn-primary:hover{background:#fff}
.btn-ghost{background:rgba(0,0,0,.35);color:var(--ink);border-color:rgba(244,244,242,.55)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-s{min-height:44px;padding:0 var(--s2);font-size:15px;gap:8px}
/* hover: a short red current runs along the bottom edge */
.btn::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,transparent,var(--on) 35%,#FF9AA6 50%,var(--on) 65%,transparent);transform:translateX(-101%)}
.btn:hover::after{transform:translateX(101%);transition:transform .7s cubic-bezier(.4,0,.2,1)}
.btn-arrow{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.btn:hover .btn-arrow{transform:translateX(3px)}
.btn:active{background-color:#D9D9D6}
.btn-ghost:active{background-color:rgba(244,244,242,.08)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none}
.link{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-weight:700;text-decoration:none;
 background:linear-gradient(var(--on),var(--on)) left calc(100% - 10px)/0 1px no-repeat,linear-gradient(rgba(244,244,242,.35),rgba(244,244,242,.35)) left calc(100% - 10px)/100% 1px no-repeat;transition:background-size .35s var(--ease)}
.link:hover,.link:focus-visible{background-size:100% 1px,100% 1px}

/* Header: brand · three sections · the one action (workspace) */
.site-header{position:fixed;inset:0 0 auto;z-index:50;display:flex;align-items:center;gap:var(--s4);height:72px;padding-inline:var(--gut);background:rgba(0,0,0,.82);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;text-decoration:none}
.brand img{width:28px;height:28px}
.brand .brand-word{width:86px;height:auto}
.site-menu{display:flex;align-items:center;gap:var(--s4);margin-left:auto;font-size:15px;font-weight:700}
.site-menu a{display:inline-flex;align-items:center;min-height:44px;color:var(--soft);text-decoration:none;transition:color .2s}
.site-menu a:hover,.site-menu a[aria-current]{color:var(--ink)}
/* replay sits with the menu, quieter than the three sections (also stays in the footer) */
.menu-replay{display:inline-flex;align-items:center;min-height:44px;padding:0 0 0 var(--s4);margin:0;background:none;border:0;border-left:1px solid rgba(244,244,242,.18);color:var(--ash);font:inherit;font-weight:600;font-size:14px}
.menu-replay:hover{color:var(--ink)}
.header-cta{margin-left:var(--s1)}
.menu-toggle{display:none;width:44px;height:44px;background:none;border:0;padding:0;position:relative;z-index:2}
.menu-toggle span{position:absolute;left:11px;width:22px;height:2px;background:var(--ink);transition:transform .25s}
.menu-toggle span:first-child{top:17px}.menu-toggle span:last-child{top:25px}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}
@media (max-width:899px){
 .site-header{gap:var(--s2)}
 .menu-toggle{display:block}
 .header-cta{margin-left:auto}
 .site-menu{position:fixed;inset:0;flex-direction:column;align-items:flex-start;justify-content:center;gap:var(--s1);margin:0;padding:96px var(--gut) 48px;background:#000;font-size:32px;opacity:0;visibility:hidden;transition:opacity .25s,visibility 0s .25s}
 .site-menu.open{opacity:1;visibility:visible;transition:opacity .25s}
 .site-menu a{color:var(--ink)}
 .menu-replay{margin-top:var(--s2);padding:0;border:0;color:var(--soft);font-size:18px}
 .menu-open body{overflow:hidden}
}
.fx-full .fx-off,.fx-simple .fx-on{display:none}
.fx-simple [data-replay-intro]{display:none}

/* Hero: the intro's last frame. Order: wordmark → slogan → one action */
.hero{position:relative;min-height:100vh;min-height:100svh;overflow:hidden;isolation:isolate}
.horizon{position:absolute;inset:0;z-index:-1}
.horizon i{position:absolute;left:calc(50% + var(--x) * 47vw);bottom:calc(var(--horizon) - 7vh * var(--x) * var(--x));width:calc(.5vw + 1.4vw * var(--x) * var(--x));min-width:5px;height:120%;transform:translateX(-50%);
 background:linear-gradient(90deg,transparent 0 calc(50% - 1px),rgba(242,63,82,.5) calc(50% - 1px) calc(50% + 1px),transparent calc(50% + 1px)) bottom/100% 22% no-repeat,linear-gradient(0deg,#141518,#0A0A0C 38%,#000 78%)}
.horizon i::before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(242,63,82,.18),transparent 30%)}
.horizon b{position:absolute;left:0;right:0;bottom:var(--horizon);height:1px;background:linear-gradient(90deg,transparent,var(--on) 18%,var(--on) 82%,transparent);box-shadow:0 0 14px 1px rgba(242,63,82,.55)}
.horizon::after{content:"";position:absolute;left:0;right:0;bottom:0;height:var(--horizon);background:linear-gradient(rgba(0,0,0,.35),#000 85%)}
.hero-body,.intro-brand{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 var(--gut) calc(8vh + 150px);text-align:center}
/* the wordmark also shrinks on short screens so the sentence and actions below it always fit */
.hero h1 img,.intro-brand svg{width:min(80vw,1480px,max(240px,(100svh - 400px) * 3.24));height:auto}
.slogan,.intro-brand p{margin-top:clamp(14px,2vw,30px);font-size:clamp(22px,3vw,46px);font-weight:700;letter-spacing:-.02em;line-height:1.3}
.slogan-wrap{position:relative}
.hero-follow{position:absolute;top:100%;left:50%;width:min(88vw,38em);transform:translateX(-50%);display:grid;justify-items:center;gap:var(--s3);margin-top:var(--s3)}
.hero-what{color:var(--soft);font-size:var(--t-lead);line-height:1.5}
.hero-act{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--s1) var(--s3)}

/* Sections: each one composed differently; a small kicker names it */
.about,.contact{padding-block:var(--s24) 0}
.kicker{display:flex;align-items:center;gap:12px;color:var(--ash);font-size:15px;font-weight:700;letter-spacing:0}
.kicker::before{content:"";width:8px;height:8px;background:var(--on)}
.statement{font-size:var(--t-display);font-weight:800;letter-spacing:-.045em;line-height:1.08}
.js [data-light]{transition:color 1.6s ease}
.js [data-light]:not(.is-lit){color:#2E3036}
.about-grid{display:grid;gap:var(--s6);margin-top:var(--s6)}
.about-text{display:grid;gap:var(--s2);max-width:36em;color:var(--soft);font-size:var(--t-lead);line-height:1.7}
.about-grid{gap:var(--s4)}

.solutions{padding-top:var(--s24)}
.sol-intro{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:var(--s2)}
.sol-lede{color:var(--soft);font-size:var(--t-lead)}
.features{display:grid;gap:clamp(var(--s12),12vw,var(--s24));margin-top:var(--s12)}
.feature{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gut);display:grid;gap:var(--s4);align-items:center;isolation:isolate}
.feature-text,.about-grid,.connected-body,.contact-grid{position:relative;isolation:isolate}
.feature-text::before,.about-grid::before,.connected-body::before,.contact-grid::before{content:"";position:absolute;inset:-56px -72px;z-index:-1;pointer-events:none;
 background:radial-gradient(closest-side,rgba(0,0,0,.78),rgba(0,0,0,.6) 55%,rgba(0,0,0,0))}
.feature-en{color:var(--tone);font-size:var(--t-cap);font-weight:700;letter-spacing:.04em}
.feature h3{margin-top:var(--s1);font-size:clamp(34px,3.6vw,60px);font-weight:800;letter-spacing:-.04em;line-height:1.1}
.feature-line{margin-top:var(--s2);font-size:var(--t-lead);font-weight:700;line-height:1.5}
.feature-desc{max-width:32em;margin-top:var(--s2);color:var(--soft)}
.feature-go{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s1) var(--s2);margin-top:var(--s3)}
.host{color:var(--ash);font-size:var(--t-cap)}
.feature-mark{--mark-max:168px;position:relative;container-type:inline-size;font-weight:800;letter-spacing:.02em;line-height:.9;white-space:nowrap;user-select:none;padding-block:.06em}
.feature-mark>span{font-size:min(var(--mark-max),calc(100cqi / (var(--n) * .74)));color:color-mix(in srgb,var(--tone) 14%,transparent);-webkit-text-stroke:1.5px color-mix(in srgb,var(--tone) 80%,#fff 20%);paint-order:stroke fill}
/* the name is "scanned in": a thin red line crosses it and leaves the outline lit behind */
.fx-full .feature-mark{clip-path:inset(0 100% 0 0);transition:clip-path 1.4s cubic-bezier(.65,0,.35,1)}
.fx-full .feature.in-view .feature-mark{clip-path:inset(0 0 0 0)}
.feature-mark::after{content:"";position:absolute;top:0;bottom:0;left:0;width:2px;background:var(--on);box-shadow:0 0 14px rgba(242,63,82,.7);opacity:0}
.fx-full .feature.in-view .feature-mark::after{animation:scanMark 1.4s cubic-bezier(.65,0,.35,1)}
@keyframes scanMark{0%{left:0;opacity:1}90%{opacity:1}100%{left:100%;opacity:0}}
.feature:hover .feature-mark>span{-webkit-text-stroke-color:var(--tone)}
/* 1: the lead solution, wide */
.f-wide .feature-mark{order:-1;--mark-max:260px}
@media (min-width:1080px){
 .f-wide{grid-template-columns:1fr}
 .f-wide .feature-text{max-width:44em}
 /* 2: picture left */
 .f-left{grid-template-columns:7fr 5fr;gap:var(--s12)}
 .f-left .feature-mark{order:-1}
 /* 3: text first, a narrower frame set lower */
 .f-offset{grid-template-columns:6fr 5fr;gap:var(--s12);align-items:start}
 .f-offset .feature-mark{margin-top:var(--s12);text-align:right}
 /* 4: centred title, wide frame below */
 .f-stack{grid-template-columns:1fr;text-align:center;justify-items:center}
 .f-stack .feature-desc{margin-inline:auto}
 .f-stack .feature-go{justify-content:center}
 .f-stack .feature-mark{--mark-max:220px;justify-self:stretch}   /* a size container must not shrink to its (zero) content */
 /* 5: the mobile app, in a phone-shaped frame */
 .f-phone{grid-template-columns:1fr auto;gap:var(--s12)}
}
.f-phone .feature-mark{writing-mode:vertical-rl;container-type:normal;justify-self:center;font-size:clamp(44px,6vw,120px);line-height:1.4;padding-inline:.12em}
.f-phone .feature-mark>span{font-size:1em}   /* line height from the word's own size, so the box holds the strokes */

/* CONNECTED: the outlined and solid word split on a diagonal (from Version B), with the section's one action */
.connected{position:relative;margin-top:var(--s24);padding-block:var(--s12);overflow:hidden;border-block:1px solid var(--line);background:rgba(0,0,0,.55)}
.connected-art{position:relative;font-size:clamp(64px,15.5vw,300px);font-weight:800;letter-spacing:-.05em;line-height:.9;white-space:nowrap;text-align:center;user-select:none}
.connected-art{--cut:0%}
.js.fx-full .connected:not(.in-view) .connected-art{--cut:-75%}
.conn-outline{display:block;color:transparent;-webkit-text-stroke:1.5px rgba(216,84,108,.6)}
.conn-solid{position:absolute;inset:0;color:var(--ink);clip-path:polygon(0 0,100% 0,100% calc(48% + var(--cut)),0 calc(67% + var(--cut)))}
.conn-slash{position:absolute;inset:0;pointer-events:none;background:#F04C63;filter:drop-shadow(0 0 6px rgba(240,76,99,.45));
 clip-path:polygon(0 calc(67% + var(--cut) - .35%),100% calc(48% + var(--cut) - .35%),100% calc(48% + var(--cut) + .35%),0 calc(67% + var(--cut) + .35%))}
@property --cut{syntax:"<percentage>";inherits:true;initial-value:0%}
.fx-full .connected-art{transition:--cut 1.6s cubic-bezier(.65,0,.35,1)}
@media (prefers-reduced-motion:reduce){.fx-full .connected-art{transition:none}}
.connected-body{display:grid;gap:var(--s2);justify-items:start;margin-top:var(--s8)}
.connected-body h3{font-size:var(--t-title);font-weight:800;letter-spacing:-.03em;line-height:1.3}
.connected-body p{color:var(--soft)}
.connected-body .btn{margin-top:var(--s2)}
.connected-body{max-width:var(--max)}

.more{margin-top:var(--s16)}
.more-title{padding-bottom:var(--s2);font-size:var(--t-title);font-weight:700;letter-spacing:-.025em}
@media (min-width:1080px){.more .sol-list{display:grid;grid-template-columns:1fr 1fr;column-gap:var(--s12)}}
.sol-row{position:relative;display:grid;grid-template-columns:40px minmax(0,1fr);column-gap:var(--s2);row-gap:2px;align-items:center;padding:var(--s2) 0;border-top:1px solid var(--line);text-decoration:none}
.sol-row img{grid-row:span 3;width:40px;height:40px;align-self:start}
.sol-name{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:10px}
.sol-name strong{font-size:20px;font-weight:700;letter-spacing:-.02em;line-height:1.4}
.sol-name em{font-style:normal;color:var(--ash);font-size:var(--t-cap)}
.sol-desc{color:var(--soft);font-size:15px;line-height:1.6}
.sol-host{color:var(--ash);font-size:var(--t-cap)}
.sol-row::after{content:"";position:absolute;left:0;bottom:-1px;width:100%;height:1px;background:var(--on);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease)}
.sol-row:hover::after,.sol-row:focus-visible::after{transform:scaleX(1)}
@media (min-width:1080px){.sol-row{grid-template-columns:40px minmax(0,1fr) auto}.sol-row img{grid-row:span 2}.sol-host{grid-column:3;grid-row:1/span 2;align-self:center}}

/* Contact: a statement and the page's last action */
.contact-grid{display:grid;gap:var(--s6);margin-top:var(--s6)}
.contact-act{display:grid;gap:var(--s3);justify-items:start}
.contact-note{max-width:30em;color:var(--soft);font-size:15px}
.contact-time{color:var(--ink);font-size:15px;font-weight:600}
.contact-addr{color:var(--ash);font-size:var(--t-cap)}
.contact-addr b{margin-right:8px;color:var(--soft);font-weight:700}
@media (min-width:1080px){.contact-grid{grid-template-columns:7fr 4fr;align-items:end;gap:var(--s12)}}

/* Phones: after the hero a fixed bar keeps the two actions in reach; it steps aside at the footer and never shows in the intro */
.m-cta{display:none}
@media (max-width:768px){
 .m-cta{position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;gap:var(--s1);padding:var(--s2) var(--s2) calc(var(--s2) + env(safe-area-inset-bottom));
  background:linear-gradient(rgba(0,0,0,0),rgba(0,0,0,.92) 28%);transform:translateY(110%);transition:transform .3s var(--ease)}
 .m-cta.is-shown{transform:none}
 .m-cta .btn{flex:1 1 0;min-width:0}
 .m-cta .btn-ghost{flex:0 0 auto}
}
.intro-on .m-cta,.menu-open .m-cta{display:none}
@media (prefers-reduced-motion:reduce){.m-cta{transition:none}}

/* Footer: compact; utilities (replay, effects) live here too */
.site-footer{margin-top:var(--s24);padding:var(--s16) 0 var(--s4);background:linear-gradient(rgba(0,0,0,0),rgba(0,0,0,.84) var(--s16),#000)}
.footer-in,.footer-util{max-width:var(--max);margin-inline:auto;padding-inline:var(--gut)}
.footer-in{display:grid;gap:var(--s4)}
.footer-co{display:grid;gap:var(--s2);justify-items:start;color:var(--soft);font-size:13px;line-height:1.8}
.footer-copy{color:var(--ash);font-size:13px}
.footer-nav{order:-1;display:flex;flex-wrap:wrap;gap:0 var(--s3)}
.footer-nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--soft);font-size:13px;text-decoration:none}
.footer-nav a:hover{color:var(--ink)}
@media (min-width:900px){.footer-in{grid-template-columns:minmax(0,1fr) minmax(0,34em);column-gap:var(--s12);align-items:start}.footer-nav{order:0;justify-content:flex-end}}
.site-footer .rv-biz{color:var(--soft);font-size:13px;opacity:1}
.footer-util{display:flex;flex-wrap:wrap;align-items:center;gap:0 var(--s3);margin-top:var(--s4);padding-top:var(--s2);border-top:1px solid rgba(37,39,44,.8)}
.util{display:inline-flex;align-items:center;min-height:44px;padding:0;background:none;border:0;color:var(--ash);font-size:var(--t-cap);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--line)}
.util:hover{color:var(--ink)}

/* Document pages */
.doc-404 .btn{margin-top:var(--s3)}
.doc{max-width:860px;margin:0 auto;padding:clamp(120px,14vw,180px) var(--gut) 0}
.doc .eyebrow{display:block;color:var(--ash);font-size:15px;font-weight:600}
.doc h1{margin-top:16px;font-size:clamp(40px,6vw,76px);font-weight:800;letter-spacing:-.04em;line-height:1.12}
.doc .lede{margin-top:24px;color:var(--soft);font-size:clamp(18px,1.5vw,21px)}
.doc h2{margin-top:clamp(56px,7vw,88px);padding-top:20px;border-top:1px solid var(--line);font-size:clamp(24px,2.2vw,32px);font-weight:700;letter-spacing:-.025em;line-height:1.35}
.doc h3{margin-top:28px;font-size:20px;font-weight:700}
.doc p,.doc li{color:var(--soft);line-height:1.8}
.doc .rv-legal{padding:0;max-width:none;color:var(--soft)}
.doc .rv-legal h1{font-size:clamp(34px,4.4vw,56px);font-weight:800;letter-spacing:-.035em;color:var(--ink)}
.doc .rv-legal h2,.doc .rv-legal h3{color:var(--ink)}
.doc p{margin-top:16px}
.doc ul,.doc ol{padding-left:1.2em}
.doc .contents-list{margin-top:32px}
.doc .contents-list .item{padding:22px 0;border-top:1px solid var(--line)}
.doc .contents-list .item h3{margin-top:0}
.doc .contents-list .item p{margin-top:6px}
.doc .info-note{margin-top:28px;padding-left:16px;border-left:2px solid var(--on);color:var(--ash);font-size:15px}
.doc .doc-link{display:inline-flex;align-items:center;min-height:44px;margin-top:16px;color:var(--ink);font-weight:700;text-decoration:underline;text-decoration-color:var(--on);text-underline-offset:6px}
.doc .doc-nav{display:flex;flex-wrap:wrap;gap:4px 24px;margin-top:clamp(72px,8vw,112px);padding-top:20px;border-top:1px solid var(--line)}
.doc .doc-nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--ash);text-decoration:none}
.doc .doc-nav a:hover{color:var(--ink)}
.doc .sol-list{margin-top:32px}
.doc code{padding:1px 6px;background:#15161A;color:var(--ink);font-size:.92em}
.doc li+li{margin-top:8px}
.doc a:not(.doc-link):not(.btn){text-decoration-color:var(--on);text-underline-offset:5px;text-decoration-thickness:1px}
.doc .contents-list h3 a{display:inline-flex;align-items:center;min-height:44px;text-decoration:underline;text-decoration-color:var(--on);text-underline-offset:5px}

/* Intro */
.intro{position:fixed;inset:0;z-index:100;overflow:hidden;background:#000;color:var(--ink);transition:opacity .85s ease}
.intro-on .intro[hidden]:not(.is-done){display:block}
/* during the intro only the wordmark stays; menu and actions fade back in after the handover */
.site-header,.hero-follow{transition:opacity .8s ease}
.intro-on .site-header,.intro-on .hero-follow{opacity:0}
.intro-on body{overflow:hidden}
.intro.is-leaving{opacity:0;pointer-events:none}
.intro-black{position:absolute;inset:0;background:#000}
/* 1.8s: the white page turns black all at once (a fade, never a growing shape) */
.intro-white{position:absolute;inset:0;background:#fff;transition:opacity .4s cubic-bezier(.4,0,.2,1)}
.intro.is-invert .intro-white{opacity:0}
.intro-line{position:absolute;z-index:6;left:0;top:50%;width:100%;height:clamp(90px,13vh,165px);transform:translateY(-50%);overflow:visible;pointer-events:none;transition:opacity .7s ease;will-change:transform}
/* the loader: the line is revealed left to right by two opposing transforms (compositor only, smooth while the world compiles) */
.intro-lw{position:absolute;inset:0;z-index:6;overflow:hidden;pointer-events:none;transform:translateX(calc((var(--lp,0) - 1) * 100%));transition:transform .7s cubic-bezier(.33,0,.2,1),opacity .5s ease}
.intro-lw-in{position:absolute;inset:0;transform:translateX(calc((1 - var(--lp,0)) * 100%));transition:transform .7s cubic-bezier(.33,0,.2,1)}
.intro-line path{fill:none;stroke-linecap:round;stroke-linejoin:round}
.intro-line .glow{stroke:#f32c47;stroke-width:9;opacity:.3;filter:blur(4px)}
.intro-line .main{stroke:url(#introStroke);stroke-width:2.7}
.intro-hud.is-waiting .intro-line{animation:introWait 1.8s ease-in-out infinite}
@keyframes introWait{50%{opacity:.6}}
/* 1.05s: one heartbeat, as if the power came on */
.intro-hud.is-pulse .intro-line{animation:introPulse .42s cubic-bezier(.3,0,.2,1)}
@keyframes introPulse{40%{transform:translateY(-50%) scaleY(3.2)}100%{transform:translateY(-50%) scaleY(1)}}   /* transform only: no repaint while the world loads */
/* 2.35s: the 3D horizon has taken its place */
.intro-hud.is-invert .intro-lw{opacity:0}   /* hands over to the 3D horizon at the same height as the page turns dark */
.intro-hud.is-horizon .intro-lw{visibility:hidden}
.intro.no-webgl{background:transparent}
.intro.no-webgl.is-invert .intro-black{opacity:0;transition:opacity 2.4s ease .6s}
.intro-hud{position:fixed;inset:0;z-index:102;pointer-events:none;color:var(--ink);transition:opacity .85s ease}
.intro-on .intro-hud[hidden]{display:block}
.intro-hud.is-leaving{opacity:0}
.intro-hud.no-webgl .intro-brand{display:none}
.intro-hud::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,transparent 55%,rgba(0,0,0,.5) 100%);opacity:0;transition:opacity 1s}
.intro-hud.is-diving::before{opacity:1}
.intro-brand{z-index:9;pointer-events:none}
/* the wordmark settles exactly onto the lit towers below it */
.intro-brand svg{opacity:.001;transition:opacity 1.3s ease;will-change:opacity}   /* painted up front, so the fade-in costs no raster */
.intro-hud.is-brand .intro-brand svg{opacity:1}
.intro-brand p{opacity:.001;transition:opacity 1.2s ease;will-change:opacity}
.intro-hud.is-slogan .intro-brand p{opacity:1}
.intro-skip{position:absolute;z-index:12;pointer-events:auto;right:clamp(16px,4vw,48px);bottom:clamp(64px,11vh,120px);min-height:44px;padding:0 20px;border:1px solid rgba(244,244,242,.65);border-radius:var(--r-btn);background:rgba(10,10,12,.78);color:var(--ink);font-size:15px;font-weight:600}
.intro-skip:hover{border-color:var(--ink)}
.intro-hud:not(.is-invert) .intro-skip{border-color:rgba(0,0,0,.28);background:rgba(255,255,255,.85);color:#111}
.intro-progress{position:absolute;z-index:12;left:0;right:0;bottom:0;height:2px;background:rgba(255,255,255,.08)}
.intro-progress span{display:block;height:100%;background:var(--on);transform:scaleX(0);transform-origin:left}

@media (max-width:640px){
 :root{--horizon:34%}
 .horizon i{width:calc(1.4vw + 2.6vw * var(--x) * var(--x));opacity:.7}
 }
@media (prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

.doc .rv-fill{font-size:max(13px,.88em)}
.doc code,.doc .rv-legal code{font-size:max(13px,.9em)}
/* intro film (js/intro.js, tools/film): the plate (the film's last frame) sits behind the page as the hero background;
   the video plays inside the intro overlay and settles onto the page's wordmark before the overlay fades off */
.film{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none;background:#000;opacity:0;transition:opacity .6s ease}
.film-ready .film{opacity:1}
.film::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,transparent 62%,#000 100%)}   /* the frame's edges never show */
.film-frame{position:absolute;left:0;top:0;max-width:none;display:block;transform-origin:0 0}
.intro .film-frame{z-index:1}
.intro.is-settling .film-frame{transition:transform 1s cubic-bezier(.4,0,.2,1)}
.intro.is-entering{opacity:0}
.intro-white,.intro-lw,.intro-brand{display:none}
.film-ready .world-scrim{opacity:calc(var(--scrim,0) * .8)}
.film-ready .horizon{display:none}
.fx-simple .film{opacity:1}