*{box-sizing:border-box}

:root,[data-theme="light"]{
  --bg:#f5f3ee;--surface:#ffffff;--surface-2:#faf8f3;
  --ink:#2a2723;--muted:#6d685f;--faint:#9c968b;
  --line:rgba(42,39,35,.12);--line-2:rgba(42,39,35,.07);
  --accent:#5e5c82;--accent-ink:#4a4869;--accent-soft:rgba(94,92,130,.12);
  --teal:#178a74;--teal-soft:rgba(23,138,116,.12);
  --display:'Space Grotesk',sans-serif;
  --body:'IBM Plex Sans',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --sidebar-w:400px;
}
[data-theme="dark"]{
  --bg:#1d1e21;--surface:#26272b;--surface-2:#222327;
  --ink:#e9e7e2;--muted:#a6a29a;--faint:#75716a;
  --line:rgba(255,255,255,.12);--line-2:rgba(255,255,255,.07);
  --accent:#9b99c6;--accent-ink:#b3b1d8;--accent-soft:rgba(155,153,198,.14);
  --teal:#4cc2a8;--teal-soft:rgba(76,194,168,.16);
}
[data-theme] *{transition:background-color .3s ease,border-color .3s ease,color .3s ease}
::selection{background:var(--accent-soft)}

html{overflow-y:scroll}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

/* ============ LAYOUT ============ */
/* Centered container; sticky sidebar stays put while content scrolls */
.layout{display:flex;align-items:flex-start;max-width:1400px;margin:0 auto;min-height:100vh}

.sidebar{
  position:sticky;top:0;align-self:flex-start;
  width:var(--sidebar-w);height:100vh;flex-shrink:0;
  border-right:1px solid var(--line);
  background:var(--bg);
  overflow-y:auto;
  display:flex;
}
.sidebar-inner{margin:auto 0;padding:56px 48px;width:100%}

/* Scrollable right content */
.content{
  flex:1;min-width:0;
  padding:64px 60px 40px;
}

/* ============ SIDEBAR PROFILE ============ */
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--accent);margin-bottom:20px}
.hero-greeting{margin:0 0 2px;font-family:'Montserrat',var(--display);font-weight:460;font-size:46px;line-height:1.05;letter-spacing:-.025em;color:var(--ink)}
.hero-name{margin:0;font-family:'Montserrat',var(--display);font-weight:460;font-size:46px;line-height:1.05;letter-spacing:-.025em;color:var(--ink)}
.hero-social{display:flex;align-items:center;gap:4px;margin:18px 0 0;margin-left:-9px}
.hero-sub{margin-top:18px;font-size:17px;color:var(--muted)}
.hero-sub .dot{color:var(--faint);padding:0 3px}
.hero-lede{margin:20px 0 0;font-size:15.5px;line-height:1.7;color:var(--muted)}
.hero-lede em{color:var(--ink);font-style:normal}
.hero-lede strong{color:var(--ink);font-weight:600}

/* Vertical nav on the left edge */
.side-nav{display:flex;flex-direction:column;gap:2px;margin-top:36px}
.side-nav .tab{
  position:relative;background:none;border:none;cursor:pointer;text-align:left;
  font-family:var(--body);font-size:16px;color:var(--muted);
  padding:9px 0 9px 16px;border-left:2px solid transparent;
}
.side-nav .tab:hover{color:var(--ink)}
.side-nav .tab.is-active{color:var(--ink);font-weight:600;border-left-color:var(--accent)}

.theme-toggle{
  margin-top:32px;display:inline-flex;align-items:center;gap:9px;
  border:1px solid var(--line);border-radius:9px;background:var(--surface);
  color:var(--ink);cursor:pointer;padding:8px 14px;font-family:var(--mono);font-size:12px;
}
.theme-toggle:hover{border-color:var(--accent)}
.theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:inline}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}

/* ============ CONTENT PANELS (scaled up ~25%) ============ */
.tab-panel{display:none}
.tab-panel.is-active{display:block;animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.rsection{margin-bottom:60px}
.rsection:last-of-type{margin-bottom:0}

.block-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px;gap:16px}
.block-head-left{display:flex;align-items:center;gap:13px;flex-wrap:wrap}
.gs-logo{display:inline-flex;width:32px;height:32px;border-radius:50%;overflow:hidden;flex-shrink:0;box-shadow:0 0 0 1px var(--line)}
.gs-logo svg,.gs-logo img{width:100%;height:100%;display:block;object-fit:cover}
.kicker.gs-tagline{color:var(--muted);font-weight:500;text-transform:none;letter-spacing:0}
.block-title{margin:0;font-family:var(--display);font-size:32px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.block-title.sm{font-size:26px;margin-bottom:6px}
.block-subnote{margin:0 0 12px;font-family:var(--mono);font-size:14px;color:var(--faint)}
.kicker{margin:0;font-family:var(--display);font-size:19px;font-weight:600;color:var(--ink);text-transform:uppercase;letter-spacing:.1em}
.kicker-link{text-decoration:none;transition:color .2s ease}
.kicker-link:hover{color:var(--accent)}
.kicker-note{font-family:var(--mono);font-size:14px;color:var(--faint)}
.link-btn{background:none;border:none;cursor:pointer;font-family:var(--mono);font-size:14px;color:var(--accent);white-space:nowrap}
.link-btn:hover{color:var(--accent-ink)}

.page-title{margin:0;font-family:var(--display);font-size:42px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.arena-logo{display:block;width:100%;max-width:240px;height:auto;margin:2px 0 0}
.arena-logo path{fill:var(--ink)}
.page-sub{margin:16px 0 0;font-size:19px;line-height:1.65;color:var(--muted);max-width:64ch}
.page-sub em{color:var(--ink);font-style:normal}
.page-sub strong{color:var(--ink);font-weight:600}

/* ============ FEATURED RESEARCH CARDS ============ */
.feat-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.rcard{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);display:flex;flex-direction:column;text-decoration:none;transition:border-color .2s ease,transform .2s ease}
.rcard:hover{border-color:var(--accent);transform:translateY(-2px)}
.rcard-banner{position:relative;height:200px;border-bottom:1px solid var(--line);overflow:hidden;background:var(--surface-2)}
.rcard-img{width:100%;height:100%;object-fit:cover;display:block}
.rcard-banner.plot{background:var(--surface-2);background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);background-size:28px 28px}
.rcard-banner.viz{background:linear-gradient(120deg,#5e5c82 0%,#3aa0a0 42%,#d8a24a 74%,#b5586e 100%)}
.rcard-cap{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-family:var(--mono);font-size:13px;color:var(--faint);border:1px dashed var(--line);padding:7px 13px;border-radius:7px;background:var(--surface-2);white-space:nowrap}
.rcard-banner.viz .rcard-cap{color:rgba(255,255,255,.95);border-color:rgba(255,255,255,.4);background:rgba(0,0,0,.16)}
.rcard-body{padding:22px 25px 25px;display:flex;flex-direction:column;flex:1}
.rcard-tag{align-self:flex-start;font-family:var(--mono);font-size:13px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--teal);background:var(--teal-soft);padding:5px 12px;border-radius:7px;margin-bottom:16px}
.rcard-title{margin:0;font-family:var(--display);font-size:24px;font-weight:600;line-height:1.28;color:var(--ink)}
.rcard:hover .rcard-title{color:var(--accent-ink)}
.rcard-desc{margin:11px 0 20px;font-size:17px;line-height:1.55;color:var(--muted);flex:1}
.rcard-meta{display:flex;gap:22px;align-items:center;margin-top:auto}
.meta-item{display:inline-flex;align-items:center;gap:7px;font-family:var(--body);font-size:14px;color:var(--faint)}

/* ============ ARENA RANK LIST (home) ============ */
.rank-list{display:flex;flex-direction:column;gap:14px}
/* uniform 1.5px gradient border via padding-ring + inner panel (no subpixel mask seams) */
.rank-row{position:relative;border-radius:15px;padding:1.5px;background:var(--line-2);transition:background .3s ease}
.rank-inner{display:flex;align-items:center;gap:22px;padding:21px 28px;background:var(--surface-2);border-radius:13.5px;transition:background .25s ease}
.rank-row:hover .rank-inner{background:var(--surface)}
.rank-row:hover{background:linear-gradient(110deg,var(--accent),var(--accent-ink),var(--accent));background-size:300% 100%;animation:liquid 3s linear infinite}
.rank-row.tier-gold:hover{background:linear-gradient(110deg,#9a6b00,#ffd54a,#fff6cf,#f4c430,#b8860b,#ffd54a,#9a6b00);background-size:300% 100%}
.rank-row.tier-silver:hover{background:linear-gradient(110deg,#6f6f6f,#d8d8d8,#ffffff,#bdbdbd,#9a9a9a,#ececec,#6f6f6f);background-size:300% 100%}
@keyframes liquid{to{background-position:300% 0}}

.rank-badge{width:52px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;font-family:var(--display);font-size:22px;font-weight:700;color:var(--ink)}
.rank-badge.icon{color:var(--ink);opacity:.82}
.rank-badge.icon svg{width:32px;height:32px}
.rank-main{flex:1;min-width:0;display:flex;align-items:baseline;flex-wrap:wrap}
.rank-title{font-family:var(--display);font-size:20px;font-weight:600;color:var(--ink);white-space:nowrap}
.rank-spec{font-family:var(--display);font-size:20px;font-weight:400;color:var(--muted);white-space:nowrap}
.rank-spec::before{content:"-";margin:0 8px;color:var(--faint)}
.rank-date{font-family:var(--body);font-size:15px;color:var(--faint);flex-shrink:0;margin-left:auto;padding-left:16px}

/* ============ STATS ============ */
/* ============ ARENA (editorial record) ============ */
.arena-lead{margin:48px 0 8px;font-size:23px;line-height:1.6;color:var(--muted);max-width:60ch}
.arena-lead em{color:var(--ink);font-style:normal}
.m1das{
  font-weight:700;
  background:linear-gradient(110deg,#8a5e00,#ffd54a,#fff3c4,#f4c430,#a9760b,#ffd54a,#8a5e00);
  background-size:300% 100%;
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  animation:liquid 3.2s linear infinite;
  text-decoration:none;cursor:pointer;
}
.arena-h{margin:0;font-family:var(--display);font-size:24px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.arena-labs{text-align:center}
.labs-head{margin:0 0 22px;font-family:'Montserrat',var(--display);font-size:30px;font-weight:600;letter-spacing:-.01em;color:var(--muted)}
.labs-list{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px 22px;font-family:var(--display);font-size:25px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.labs-dot{color:var(--faint);font-weight:400}
.lab-mark{color:var(--ink);font-weight:700}
.record{list-style:none;margin:20px 0 0;padding:0}
.record-item{display:flex;align-items:center;gap:26px;padding:24px 2px;border-top:1px solid var(--line)}
.record-item:last-child{border-bottom:1px solid var(--line)}
.record-rank{flex-shrink:0;width:78px;display:flex;align-items:center;font-family:var(--display);font-size:30px;font-weight:700;color:var(--ink);line-height:1}
.record-rank.icon{opacity:.82}
.record-rank.icon svg{width:37px;height:37px}
.record-body{flex:1;min-width:0}
.record-name{display:block;font-family:var(--display);font-size:20px;font-weight:600;color:var(--ink)}
.record-note{display:block;margin-top:5px;font-size:16px;color:var(--muted)}
.record-date{flex-shrink:0;font-size:15px;color:var(--faint);white-space:nowrap}

/* ============ TAGS / PILLS ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}
.pill{font-family:var(--mono);font-size:14px;color:var(--accent-ink);background:var(--accent-soft);padding:6px 13px;border-radius:999px}

/* ============ RESULTS ============ */
/* ============ CALLOUT ============ */
.callout{border:1px solid var(--line);border-radius:16px;background:var(--surface-2);padding:28px 30px;display:flex;gap:18px;align-items:flex-start}
.callout-star{font-family:var(--mono);font-size:16px;color:var(--accent);margin-top:3px}
.callout p{margin:0;font-size:18px;line-height:1.65;color:var(--muted)}
.callout strong{color:var(--ink);font-weight:600}

/* ============ ARCHIVE ============ */
.archive-year{display:flex;gap:40px;padding:28px 0;border-top:1px solid var(--line)}
.archive-y{font-family:var(--display);font-size:42px;font-weight:700;color:var(--faint);width:110px;flex-shrink:0;line-height:1;opacity:.55}
.archive-items{flex:1}
.archive-item{display:flex;gap:18px;align-items:baseline;padding:13px 0}
.archive-month{font-family:var(--body);font-size:15px;font-weight:500;color:var(--accent);width:48px;flex-shrink:0}
.archive-title{font-size:19px;color:var(--ink);flex:1}
.archive-tag{font-family:var(--mono);font-size:14px;color:var(--muted);flex-shrink:0}

/* ============ RESEARCH PAGE CARDS ============ */
.rp-year{font-family:var(--display);font-size:20px;font-weight:700;color:var(--faint);opacity:.7;margin-bottom:18px}
.rp-list{display:flex;flex-direction:column;gap:16px}
.rp-card{display:flex;align-items:center;gap:26px;background:var(--surface-2);border:1px solid var(--line-2);border-radius:16px;padding:24px 28px;text-decoration:none;transition:border-color .2s ease,transform .2s ease,background .2s ease}
.rp-card:hover{border-color:var(--accent);transform:translateY(-2px);background:var(--surface)}
.rp-text{flex:1;min-width:0}
.rp-title{margin:0;font-family:var(--display);font-size:24px;font-weight:600;line-height:1.25;color:var(--ink)}
.rp-card[href]:hover .rp-title:not(.glitch){color:var(--accent-ink)}
.rp-date{display:block;margin-top:10px;font-family:var(--body);font-size:15px;color:var(--faint)}
.rp-thumb{flex-shrink:0;width:148px;height:90px;border-radius:9px;overflow:hidden;border:1px solid var(--line);background:var(--surface);background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);background-size:14px 14px}
.rp-thumb img{width:100%;height:100%;object-fit:cover;display:block}

/* in-progress: pixel-text canvas title (ported from Sample Text Pixels) */
.pixel-title{display:block;width:100%;height:86px}

/* ============ WRITING ============ */
.writing-list{margin-top:8px}
.writing-row{display:flex;justify-content:space-between;align-items:baseline;gap:20px;padding:21px 0;border-top:1px solid var(--line);text-decoration:none}
.writing-title{font-family:var(--display);font-size:22px;font-weight:500;color:var(--ink)}
.writing-row:hover .writing-title{color:var(--accent-ink)}
.writing-date{font-family:var(--body);font-size:15px;color:var(--faint);white-space:nowrap}

/* ============ SOCIAL ============ */
.social-icons{display:flex;align-items:center;gap:4px}
.social-link{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:9px;color:var(--muted);text-decoration:none}
.social-link:hover{color:var(--accent);background:var(--accent-soft)}

/* ============ FOOTER ============ */
.content-footer{margin-top:72px;padding-top:26px;border-top:1px solid var(--line);font-family:var(--body);font-size:14px;color:var(--faint)}

/* ============ RESPONSIVE ============ */
@media (max-width:1080px){
  .content{padding:56px 40px 40px}
}
@media (max-width:860px){
  .layout{flex-direction:column}
  .sidebar{position:static;width:auto;height:auto;border-right:none;border-bottom:1px solid var(--line);overflow:visible}
  .sidebar-inner{margin:0;padding:40px 28px}
  .content{padding:40px 28px}
  .side-nav{flex-direction:row;flex-wrap:wrap;gap:6px;margin-top:28px}
  .side-nav .tab{border-left:none;border-bottom:2px solid transparent;padding:6px 4px 8px}
  .side-nav .tab.is-active{border-left:none;border-bottom-color:var(--accent)}
  .theme-toggle{margin-top:24px}
}
@media (max-width:560px){
  .feat-grid{grid-template-columns:1fr}
  .hero-name{font-size:40px}
  .labs-head{font-size:23px}
  .labs-list{justify-content:center;font-size:19px;gap:10px 14px}
  .record-item{gap:16px}
  .record-rank{width:54px;font-size:24px}
  .record-name{font-size:18px}
  .record-note{font-size:15px}
  .archive-year{flex-direction:column;gap:8px}
  .rank-spec{font-size:17px}
  .rank-title{font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  [data-theme] *,.tab-panel.is-active,.rank-row:hover,.m1das{transition:none;animation:none}
}