/* STUDIO V4 — portfolio identity / case-study system.
   Tokens and typography build on the existing Onest + Lora assets.
   Every decorative treatment supports an actual case, hierarchy or navigation. */
:root{
  --studio-bg:#080e14;
  --studio-paper:#101b23;
  --studio-line:rgba(179,220,213,.23);
  --studio-mint:#9ef6dd;
  --studio-coral:#ffa58f;
  --studio-blue:#b5cfff;
  --studio-text:#f4f8f5;
  --studio-muted:#bdd0ce;
}
html{scroll-padding-top:105px}
body{background:var(--studio-bg);font-feature-settings:"kern" 1;text-rendering:optimizeLegibility}
:focus-visible{outline:3px solid #a7ffe7;outline-offset:4px}
::selection{background:#8df3d5;color:#071017}
.topbar{border-bottom:1px solid rgba(140,213,195,.24);box-shadow:0 1px 30px rgba(0,0,0,.21)}
.topbar::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;transform:scaleX(var(--studio-progress,0));transform-origin:left center;background:linear-gradient(90deg,#95f8da,#ffa58f);pointer-events:none}
.topbar nav a{position:relative}
.topbar nav a::after{content:"";position:absolute;bottom:-5px;left:0;right:100%;height:1px;background:#a7ffe7;transition:right .2s ease}
.topbar nav a:hover::after,.topbar nav a[aria-current="location"]::after{right:0}
.topbar nav a[aria-current="location"]{color:#a7ffe7}
.hero{isolation:isolate;overflow:hidden}
.hero::after{
 content:"";position:absolute;z-index:-1;
 width:min(57vw,850px);height:min(57vw,850px);right:-20vw;top:-20vw;
 border-radius:50%;border:1px solid rgba(161,234,217,.11);
 box-shadow:0 0 0 78px rgba(128,240,210,.018),0 0 0 160px rgba(128,240,210,.012);
 pointer-events:none
}
.hero .eyebrow{border-color:rgba(145,240,211,.31);background:rgba(9,22,25,.65)}
.hero h1{max-width:1040px;letter-spacing:-.068em;text-wrap:balance}
.hero h1 em{font-weight:500;text-shadow:0 2px 40px rgba(255,165,143,.16)}
.hero .lead{max-width:820px;line-height:1.7;color:#e0eae7}
.hero-nameplate{margin-top:29px;gap:8px}
.hero-nameplate span{
 font:700 12px/1.2 "Onest",Arial,sans-serif;letter-spacing:.015em;
 border:1px solid rgba(154,243,215,.27);border-left:3px solid var(--studio-mint);
 background:rgba(14,31,35,.65);padding:9px 13px;
}
.hero-nameplate span:nth-child(3){border-left-color:var(--studio-blue)}
.hero-nameplate span:nth-child(4){border-left-color:var(--studio-coral)}
.hero-base{border-top:1px solid rgba(180,218,207,.23)}
.hero-base span{color:#bcd1cd}
.btn{border-radius:2px;letter-spacing:-.016em}
.btn-primary{box-shadow:0 10px 32px rgba(122,234,202,.11)}
.btn:hover{box-shadow:0 13px 38px rgba(123,225,199,.13)}
/* Achievement wall — editorial composition with anchored card accents */
.achievement-wall{isolation:isolate;overflow:hidden;padding-top:72px}
.achievement-wall::before{
 content:"";position:absolute;inset:0;z-index:-1;opacity:.19;pointer-events:none;
 background-image:linear-gradient(rgba(192,231,226,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(192,231,226,.07) 1px,transparent 1px);
 background-size:56px 56px;
 mask-image:linear-gradient(90deg,transparent 5%,black 50%,transparent 98%)
}
.section-serial{display:flex;justify-content:space-between;gap:12px;align-items:center;padding-bottom:23px;margin-bottom:34px;border-bottom:1px solid rgba(193,228,219,.18)}
.section-serial span{font:750 12px/1.4 "Onest",Arial,sans-serif;letter-spacing:.15em;color:#91f6d8}
.section-serial span:last-child{font-size:10px;color:#a8bab7}
.achievement-heading h2{line-height:1.08;max-width:930px}
.achievement-heading p{line-height:1.77}
.achievement-grid{gap:14px}
.achievement{
 border-radius:3px;isolation:isolate;overflow:hidden;
 padding:32px 30px 33px;gap:24px;
 transition:transform .23s ease,border-color .23s ease,box-shadow .23s ease;
}
.achievement::before{z-index:-1;width:270px;height:270px;border-color:rgba(189,244,232,.16);right:-108px;bottom:-170px}
.achievement::after{content:"";pointer-events:none;position:absolute;top:0;left:0;width:100%;height:3px;background:var(--case-accent,var(--studio-mint));opacity:.69}
.achievement:hover{transform:translateY(-4px);box-shadow:0 23px 50px rgba(0,0,0,.26)}
.achievement-hse{--case-accent:#95ffdc}
.achievement-ostrovok{--case-accent:#ffa98f}
.achievement-mipt{--case-accent:#b5cfff}
.achievement-game{--case-accent:#ffb0ab}
.achievement-lead{--case-accent:#8bdace}
.achievement-label{
 flex-direction:column;align-items:flex-start;gap:5px;
 font:650 13px/1.4 "Onest",Arial,sans-serif;letter-spacing:-.002em
}
.achievement-label b{font:800 11px/1.4 "Onest",Arial,sans-serif;letter-spacing:.06em}
.achievement-main{letter-spacing:-.06em;line-height:1.16}
.achievement-main em{font-weight:510;font-style:italic}
.achievement-hse .achievement-main{max-width:860px;font-size:clamp(36px,3.5vw,58px)}
.achievement-main .nonbreak{display:inline;white-space:nowrap}
.achievement-description,.achievement-hse .achievement-description{font-size:16px;line-height:1.6;color:#d1e0db}
.achievement-arrow{
 display:flex;align-items:center;justify-content:center;
 width:34px;height:34px;right:20px;bottom:20px;
 border:1px solid rgba(168,250,223,.3);border-radius:50%;
 font-size:21px;background:rgba(14,28,31,.44);
 transition:background .2s ease,transform .2s ease
}
.achievement:hover .achievement-arrow{transform:translate(2px,-2px);background:rgba(150,240,212,.15)}
.achievement-compact{border-left:3px solid rgba(143,245,217,.74);background:linear-gradient(105deg,rgba(28,46,50,.85),rgba(13,25,31,.96));transition:border-color .2s ease,transform .2s ease}
.achievement-compact:hover{transform:translateX(3px)}
.achievement-compact b{font:800 12px "Onest",Arial,sans-serif}
.achievement-compact strong{font-size:21px}
.achievement-compact span span{color:#ccdcda}
/* Case-study journal: hierarchy, scanning and stronger personal contributions */
.section.cases{padding-top:94px}
.case-intro-rail{display:flex;justify-content:space-between;gap:25px;margin-bottom:25px;padding-bottom:13px;border-bottom:1px solid rgba(174,220,209,.25)}
.case-intro-rail span{font:750 11px/1.5 "Onest",Arial,sans-serif;letter-spacing:.08em;color:#a6e7d3}
.section-title{margin-bottom:40px}
.section-title h2{line-height:1.11}
.story{
 --chapter-accent:#9eeed5;
 background:
  radial-gradient(circle at 94% 6%,rgba(111,221,191,.055),transparent 32%),
  linear-gradient(140deg,#111c25,#0c151c 74%);
 border-top:2px solid var(--chapter-accent);
 border-left-color:rgba(174,221,214,.21);
 padding:42px 44px 48px;
}
.story-feature{--chapter-accent:#9effdb}
.story-research{--chapter-accent:#bbd2ff}
.story-game{--chapter-accent:#ffb1a0}
.story:target{border-color:var(--chapter-accent);box-shadow:0 0 0 1px rgba(162,243,219,.14),0 21px 67px rgba(0,0,0,.29)}
.story .story-wordmark{letter-spacing:-.074em;margin-bottom:23px;position:relative}
.story .story-wordmark::after{content:"";display:block;width:min(155px,27%);height:2px;margin-top:17px;background:var(--chapter-accent);opacity:.55}
.story .story-wordmark span{font-size:clamp(12px,1.04vw,16px);letter-spacing:.018em}
.story .story-head .issue{
 font:750 12px/1.6 "Onest",Arial,sans-serif;letter-spacing:.04em;
 color:var(--chapter-accent)
}
.story .story-head .tag{
 font:700 12px/1.55 "Onest",Arial,sans-serif;letter-spacing:.025em;
 border-radius:2px;color:#e3eeeb
}
.story .small-label{font:780 11px/1.55 "Onest",Arial,sans-serif;letter-spacing:.07em}
.story h3{font-size:clamp(2.7rem,4.15vw,5rem);line-height:1.10;letter-spacing:-.065em}
.story .story-intro>p{font-size:17px;line-height:1.75;color:#d0dcdb}
.story .story-sub{font-size:18px!important;line-height:1.56!important}
.story h4{font-weight:750;letter-spacing:-.032em}
.story .story-grid{gap:40px}
.story .steps{counter-reset:case-step}
.story .steps li{
 counter-increment:case-step;position:relative;padding-left:46px;
 border-bottom:1px solid rgba(164,217,203,.15);
 font-size:16px;line-height:1.77;color:#cad7d4
}
.story .steps li::before{
 content:"0" counter(case-step);
 display:block;position:absolute;top:2px;left:0;
 font:800 12px/1.6 "Onest",Arial,sans-serif;letter-spacing:.04em;color:var(--chapter-accent)
}
.story .steps li b{font-weight:780}
.story .evidence{border-left:2px solid var(--chapter-accent);padding-left:28px}
.story .evidence strong{font-size:23px;letter-spacing:-.045em}
.story .evidence>p:not(.small-label){font-size:16px;line-height:1.73}
.story .evidence .text-link{padding:6px 0;font-size:15px}
.story .evidence .text-link:hover{color:#fff}
.achievement-result{background:linear-gradient(94deg,rgba(113,220,183,.08),transparent);padding:24px 19px;border-left:2px solid #91f8d4;gap:17px}
.achievement-result strong{color:#b3ffe8;font-size:clamp(27px,2.9vw,44px);line-height:1.15}
.achievement-result span{font:750 11px/1.5 "Onest",Arial,sans-serif}
.research-stats>div,.gamejam-facts>div{position:relative}
.research-stats>div::after,.gamejam-facts>div::after{content:"";position:absolute;right:16px;top:16px;width:12px;height:12px;border-top:1px solid rgba(180,231,224,.35);border-right:1px solid rgba(180,231,224,.35)}
.method-grid>div{transition:border-color .2s ease,transform .2s ease}
.method-grid>div:hover{border-color:rgba(168,243,223,.58);transform:translateY(-2px)}
.method-grid strong{color:#fafcf9;font-weight:750}
.method-grid p,.research-stage p{color:#cbd8d5}
.research-timeline{position:relative}
.research-stage h4{line-height:1.37}
.research-date span{color:#a8f2dc}
.leadership-focus{border-left:3px solid #9ef6dd}
.leadership-focus p{color:#eff5f0}
.capabilities>div{transition:background .2s ease}
.capabilities>div:hover{background:rgba(45,77,77,.22)}
.capabilities strong{line-height:1.38}
.closing .btn{margin-top:4px}
.studio-backtotop{
 display:flex;align-items:center;justify-content:center;
 position:fixed;right:24px;bottom:24px;z-index:90;
 width:51px;height:51px;cursor:pointer;
 background:#92f1d5;color:#0a1815;border:1px solid #c2ffe9;
 font:700 24px "Onest",Arial,sans-serif;
 box-shadow:0 10px 35px rgba(0,0,0,.28);
 border-radius:2px;
 opacity:0;visibility:hidden;transform:translateY(12px);
 transition:opacity .2s ease,transform .2s ease,visibility .2s ease
}
.studio-backtotop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.studio-backtotop:hover{background:#c5ffe9}
@media(min-width:1081px){
 .achievement-grid{grid-template-columns:1.65fr 1fr 1.1fr}
 .achievement-hse{grid-column:span 2}
 .achievement-mipt,.achievement-game,.achievement-lead{min-height:252px}
 .achievement-lead .achievement-main{font-size:clamp(26px,2vw,37px)}
}
@media(max-width:1080px){
 .achievement-grid{gap:12px}
 .achievement-hse .achievement-main{font-size:clamp(32px,4.3vw,50px)}
 .story{padding:35px 32px 39px}
 .story .story-grid{gap:29px}
}
@media(max-width:760px){
 html{scroll-padding-top:76px}
 .topbar{height:64px}
 .topbar::after{bottom:-1px}
 .hero{padding-top:65px}
 .hero::after{display:none}
 .hero h1{letter-spacing:-.058em;line-height:1.12}
 .hero-nameplate span{font-size:11px;padding:7px 10px}
 .achievement-wall{padding-top:47px}
 .section-serial{margin-bottom:24px;padding-bottom:15px}
 .achievement-heading h2{line-height:1.11}
 .achievement-grid{gap:11px}
 .achievement{padding:24px 20px 26px;gap:15px}
 .achievement-hse{padding:29px 22px 30px}
 .achievement-label{font-size:12px;gap:5px}
 .achievement-label b{font-size:11px}
 .achievement-main,.achievement-hse .achievement-main{font-size:clamp(29px,7.7vw,42px)}
 .achievement-description,.achievement-hse .achievement-description{font-size:15px;line-height:1.58}
 .achievement-arrow{width:30px;height:30px;right:15px;bottom:15px}
 .achievement-compact strong{font-size:17px}
 .section.cases{padding-top:64px}
 .case-intro-rail{margin-bottom:22px}
 .case-intro-rail span{font-size:10px;letter-spacing:.035em}
 .story{padding:27px 20px 34px}
 .story .story-wordmark{margin-bottom:18px}
 .story .story-wordmark::after{margin-top:12px}
 .story .story-wordmark span{font-size:11px}
 .story .story-head .issue{font-size:11px}
 .story .story-head .tag{font-size:11px}
 .story .story-intro>p{font-size:16px}
 .story .story-grid{gap:30px}
 .story h3{font-size:clamp(2.5rem,8.3vw,3.5rem)}
 .story .steps li{padding-left:34px;font-size:15.5px;line-height:1.73}
 .story .steps li::before{font-size:11px}
 .story .evidence{padding-left:18px}
 .story .evidence strong{font-size:21px}
 .research-stage{grid-template-columns:68px minmax(0,1fr)}
 .achievement-result{padding:20px 15px}
 .achievement-result strong{font-size:clamp(25px,6.8vw,36px)}
 .studio-backtotop{width:45px;height:45px;right:14px;bottom:14px;font-size:22px}
}
@media(max-width:360px){
 .hero-nameplate span{font-size:10px}
 .achievement-main .nonbreak{white-space:normal}
 .achievement-hse .achievement-main{font-size:30px}
 .story{padding:22px 14px 28px}
 .story .steps li{font-size:15px}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 .achievement,.achievement-compact,.achievement-arrow,.method-grid>div,.studio-backtotop,.capabilities>div{transition:none}
 .achievement:hover,.achievement-compact:hover,.method-grid>div:hover{transform:none}
}