/* Research hub / summary / reader additions for PINN AI */
.research-hero{padding:92px 0 54px;background:radial-gradient(circle at 82% 18%,rgba(40,120,255,.12),transparent 34%),var(--bg);border-bottom:1px solid #172335}
.research-hero .research-lede{max-width:760px;color:var(--dim);font-size:18px;margin-top:18px}
.research-hero h1{font-family:var(--serif);font-size:clamp(46px,6vw,78px);line-height:1.02;letter-spacing:-.035em;max-width:880px}.research-hero h1 span{color:var(--blue)}
.research-index{padding:72px 0 100px}.research-intro{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start;margin-bottom:40px}.research-intro h2,.research-section-title,.summary-section h2,.reader-heading h1{font-family:var(--serif);line-height:1.08}.research-intro h2,.research-section-title{font-size:clamp(30px,3.5vw,46px)}.research-intro p,.summary-section p,.summary-section li{color:var(--dim);font-size:17px}
.research-series{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:stretch}.research-tile{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start;background:linear-gradient(180deg,#0b1624,#08111d);border:1px solid #25364f;border-radius:22px;padding:24px;box-shadow:0 22px 60px rgba(0,0,0,.2);min-height:360px}.research-tile-cover{display:flex;flex-direction:column;justify-content:flex-start;min-height:320px;background:linear-gradient(180deg,#fff 0%,#f7fbff 58%,#eef9fd 100%);border-radius:16px;box-shadow:0 14px 40px rgba(0,0,0,.28);color:#0a1730;padding:22px 20px 24px;position:relative;overflow:hidden;text-decoration:none}.research-tile-cover .tile-mark{width:48px;height:auto;margin-bottom:14px}.tile-kicker{font-family:var(--mono);font-size:11px;letter-spacing:.11em;text-transform:uppercase;color:#1399bb;margin-bottom:12px}.tile-title{font-family:var(--serif);font-weight:700;font-size:clamp(24px,2.3vw,30px);line-height:1.03;letter-spacing:-.03em;max-width:13ch;margin-bottom:12px;position:relative;z-index:2}.tile-sub{font-size:13px;line-height:1.45;color:#485a71;max-width:17ch;position:relative;z-index:2}.tile-tag{margin-top:auto;font-family:var(--serif);font-size:16px;font-weight:700;position:relative;z-index:2;padding-bottom:12px}.tile-contours{position:absolute;left:-8%;right:-10%;bottom:-7%;height:44%;background:repeating-radial-gradient(ellipse at 50% 100%,transparent 0 18px,rgba(19,153,187,.12) 19px 21px,transparent 22px 40px);transform:rotate(-2.5deg);pointer-events:none}.research-tile-copy{padding-top:4px}.research-tile .kicker,.research-tags,.summary-kicker,.article-meta,.reader-breadcrumb{font-family:var(--mono);text-transform:uppercase;letter-spacing:.08em;font-size:11px}.research-tile .kicker,.summary-kicker{color:var(--cyan)}.research-tile h2{font-family:var(--serif);font-size:clamp(28px,4vw,46px);line-height:1.04;margin:10px 0 12px}.research-tile p{color:var(--dim);font-size:16px;max-width:42ch}.research-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.research-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;color:var(--cyan)}.research-tags span{border:1px solid #2a466c;border-radius:999px;padding:6px 10px;background:#0a1a2d}.coming-note{margin-top:20px;color:#9bb2cf;font-size:14px;font-weight:600}
.next-tile .next-art{display:flex;flex-direction:column;justify-content:space-between;min-height:320px;border-radius:16px;padding:22px 20px;background:linear-gradient(180deg,#0a1b32 0%,#081322 100%);border:1px solid #1f4167;position:relative;overflow:hidden}.next-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#5ec7ff}.next-number{font-family:var(--serif);font-size:108px;line-height:.9;color:#214d87;letter-spacing:-.08em}.next-lines{height:42%;background:linear-gradient(180deg,transparent 0%,rgba(40,120,255,.05) 100%);position:relative}.next-lines:before,.next-lines:after{content:"";position:absolute;left:-10%;right:-10%;height:1px;background:rgba(87,172,255,.25)}.next-lines:before{top:30%}.next-lines:after{top:62%}
.research-future{margin-top:54px;padding-top:40px;border-top:1px solid #1d2a3d}.research-future-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}.research-future article{border:1px solid #203047;background:#08111d;border-radius:16px;padding:24px}.research-future h3{font-family:var(--serif);font-size:23px}.research-future p{color:var(--muted);font-size:14px;margin-top:8px}
.summary-hero{padding:72px 0 60px;border-bottom:1px solid #172335;background:radial-gradient(circle at 88% 14%,rgba(59,168,255,.10),transparent 30%),var(--bg)}.summary-hero-grid{display:grid;grid-template-columns:260px 1fr;gap:38px;align-items:start}.summary-cover{display:flex;flex-direction:column;justify-content:flex-start;min-height:380px;background:linear-gradient(180deg,#fff 0%,#f7fbff 58%,#eef9fd 100%);border-radius:16px;box-shadow:0 18px 55px rgba(0,0,0,.35);color:#0a1730;padding:26px 22px 24px;position:relative;overflow:hidden}.summary-cover .tile-mark{width:58px;margin-bottom:18px}.summary-cover .tile-title{font-size:clamp(30px,2.5vw,34px);max-width:14ch}.summary-cover .tile-sub{max-width:18ch}.summary-cover .tile-tag{font-size:20px;padding-bottom:18px}.summary-heading h1{font-family:var(--serif);font-size:clamp(42px,5.8vw,70px);line-height:1.02;letter-spacing:-.03em;margin:8px 0 16px}.summary-heading p{color:var(--dim);font-size:18px;max-width:780px}.summary-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.summary-shell{padding:58px 0 88px}.summary-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:32px;align-items:start}.summary-section{background:#08111d;border:1px solid #203047;border-radius:18px;padding:28px}.summary-section h2{font-size:30px;margin:0 0 14px}.summary-section ul{margin:18px 0 0;padding-left:20px}.summary-section li{margin:10px 0}.summary-card{background:#0a1626;border:1px solid #203047;border-radius:18px;padding:24px}.summary-card h3{font-family:var(--serif);font-size:24px;margin:0 0 12px}.summary-card p{color:var(--dim);font-size:15px;margin:0 0 14px}.summary-card+.summary-card{margin-top:18px}
.reader-page{background:var(--bg);min-height:100vh}.reader-top{padding:56px 0 26px;border-bottom:1px solid #172335;background:radial-gradient(circle at 88% 16%,rgba(59,168,255,.09),transparent 30%),var(--bg)}.reader-top-inner{display:flex;justify-content:space-between;gap:26px;align-items:flex-end;flex-wrap:wrap}.reader-breadcrumb{color:#80bfff;margin-bottom:16px}.reader-breadcrumb a:hover{color:#fff}.reader-heading h1{font-size:clamp(36px,5vw,58px);margin:0 0 12px}.reader-heading p{margin:0;color:var(--dim);font-size:17px;max-width:760px}.reader-actions{display:flex;gap:12px;flex-wrap:wrap}.reader-shell{padding:28px 0 88px}.reader-controls{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;margin-bottom:24px}.reader-controls button[disabled]{opacity:.45;cursor:not-allowed;transform:none;filter:none}#pageCounter{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan)}.reader-stage{display:flex;justify-content:center}.reader-frame{display:flex;align-items:center;justify-content:center;width:min(100%,920px);padding:20px;background:linear-gradient(180deg,#08111d,#091728);border:1px solid #1f3047;border-radius:20px;box-shadow:0 18px 55px rgba(0,0,0,.35)}.reader-stage img{width:min(100%,820px);height:auto;border-radius:12px;background:#fff;box-shadow:0 18px 45px rgba(0,0,0,.28)}.reader-thumbs{display:grid;grid-template-columns:repeat(8,1fr);gap:10px;margin:22px auto 0;max-width:920px}.reader-thumb{border:1px solid #23405f;border-radius:10px;overflow:hidden;background:#08111d;cursor:pointer;padding:0}.reader-thumb img{display:block;width:100%;height:auto}.reader-thumb.active{outline:2px solid var(--cyan);border-color:#57b7ff}

/* Kindle-style modal reader */
.reader-modal{position:fixed;inset:0;z-index:5000;display:none;align-items:stretch;justify-content:stretch;background:rgba(2,8,15,.88);backdrop-filter:blur(8px)}
.reader-modal.open{display:flex}.reader-modal-shell{position:relative;width:100%;height:100%;display:flex;flex-direction:column;background:#050b12}.reader-modal-bar{height:58px;flex:0 0 58px;display:flex;align-items:center;justify-content:space-between;padding:0 18px 0 22px;border-bottom:1px solid #1b2a3c;background:#08111d}.reader-modal-title{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#a9bfd8}.reader-modal-hint{font-size:12px;color:#71859c;margin-left:12px}.reader-modal-close{width:40px;height:40px;border:1px solid #315276;border-radius:10px;background:#0a1726;color:#fff;font-size:26px;line-height:1;cursor:pointer}.reader-modal-close:hover{background:#113254;border-color:#5db8ff}.reader-modal iframe{display:block;width:100%;height:calc(100% - 58px);border:0;background:#06101a}.reader-modal-open{cursor:pointer}.modal-lock{overflow:hidden}

@media(max-width:1000px){.research-series,.summary-grid,.summary-hero-grid{grid-template-columns:1fr}.research-tile{grid-template-columns:220px 1fr}.summary-cover{max-width:280px}}@media(max-width:900px){.research-intro,.research-series,.research-future-grid,.summary-grid{grid-template-columns:1fr}.research-tile{grid-template-columns:1fr}.research-tile-cover,.next-tile .next-art{min-height:280px;max-width:280px}.summary-cover{max-width:300px}.reader-thumbs{grid-template-columns:repeat(4,1fr)}}@media(max-width:600px){.research-hero{padding-top:64px}.research-index{padding-top:52px}.research-card,.research-tile,.summary-section,.summary-card{padding:20px}.reader-top{padding-top:48px}.reader-shell{padding-top:24px}.reader-thumbs{grid-template-columns:repeat(3,1fr)}.summary-heading h1{font-size:42px}.reader-heading h1{font-size:38px}.reader-modal-bar{height:50px;flex-basis:50px;padding:0 10px 0 14px}.reader-modal iframe{height:calc(100% - 50px)}.reader-modal-hint{display:none}}