@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:wght@300;400;500;600&display=swap');
:root{
  --bg:#f8faff;--deep:#e8f0fe;--panel:#fff;--card:#f0f4ff;--border:#dbe4f8;
  --iris:#1a56db;--pupil:#0a1628;--sky:#3b82f6;--cyan:#06b6d4;--aqua:#0ea5e9;
  --violet:#6366f1;--amber:#f59e0b;--rose:#f43f5e;
  --text:#1e293b;--muted:#64748b;--white:#ffffff;--soft:#eff6ff;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'DM Sans',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.75;overflow-x:hidden}

/* HERO */
.hero{position:relative;overflow:hidden;min-height:520px;display:flex;align-items:center;background:linear-gradient(145deg,#0a1628 0%,#0f2456 40%,#1a3a8f 75%,#1e3fa8 100%)}
.hero-lens{position:absolute;right:-60px;top:50%;transform:translateY(-50%);width:480px;height:480px;border-radius:50%;background:radial-gradient(circle at 38% 38%,rgba(255,255,255,.18) 0%,rgba(100,160,255,.12) 25%,rgba(26,86,219,.08) 55%,transparent 70%);border:1px solid rgba(255,255,255,.12);pointer-events:none}
.hero-lens::after{content:'';position:absolute;inset:40px;border-radius:50%;background:radial-gradient(circle at 35% 35%,rgba(255,255,255,.15),transparent 60%);border:1px solid rgba(255,255,255,.08)}
.hero-inner{position:relative;z-index:2;max-width:1080px;margin:auto;padding:80px 55px;display:grid;grid-template-columns:1fr 300px;gap:50px;align-items:center}
.hero-label{font-size:.7rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:rgba(147,197,253,1);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.hero-label::before{content:'';width:20px;height:1px;background:rgba(147,197,253,.7)}
h1{font-family:'DM Serif Display',Georgia,serif;font-size:clamp(3rem,6vw,5.2rem);color:#fff;line-height:.95;letter-spacing:-.02em;margin-bottom:20px}
h1 em{display:block;font-size:.42em;font-style:italic;color:rgba(147,197,253,.8);margin-bottom:8px}
.hero-desc{color:rgba(219,234,254,.75);font-size:1.02rem;font-weight:300;line-height:1.75;max-width:460px;margin-bottom:28px}
.hero-stats{display:flex;gap:28px;flex-wrap:wrap}
.hs{border-left:2px solid rgba(147,197,253,.4);padding-left:14px}
.hs-val{font-family:'DM Serif Display',serif;font-size:1.9rem;color:#93c5fd;line-height:1}
.hs-lbl{font-size:.73rem;color:rgba(219,234,254,.6);margin-top:2px}

/* NAV */
.page-nav{background:var(--white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 2px 18px rgba(59,130,246,.08)}
.nav-wrap{max-width:1080px;margin:auto;padding:0 55px;display:flex;overflow-x:auto;scrollbar-width:none}
.nav-wrap::-webkit-scrollbar{display:none}
.nl{padding:13px 17px;font-size:.8rem;font-weight:500;color:var(--muted);text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent;transition:all .2s;letter-spacing:.02em}
.nl:hover,.nl.active{color:var(--iris);border-bottom-color:var(--iris)}

/* LAYOUT */
.page-wrap{max-width:1080px;margin:auto;padding:64px 55px;display:grid;grid-template-columns:1fr 285px;gap:60px;align-items:start}
main{min-width:0}

/* SECTIONS */
.sec{margin-bottom:70px}
.sec-tag{font-size:.7rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--iris);margin-bottom:12px;display:flex;align-items:center;gap:10px}
.sec-tag::after{content:'';flex:1;height:1px;background:var(--border)}
.sec h2{font-family:'DM Serif Display',serif;font-size:2rem;color:var(--text);margin-bottom:16px;line-height:1.15}
.sec p{font-size:.97rem;margin-bottom:14px;line-height:1.82;color:var(--text)}

/* ANATOMY GRID */
.anat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}
.anat-card{background:var(--white);border:1px solid var(--border);border-radius:10px;padding:18px;border-top:3px solid var(--iris);box-shadow:0 2px 10px rgba(59,130,246,.06);transition:transform .2s,box-shadow .2s}
.anat-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(59,130,246,.12)}
.anat-card:nth-child(3n+2){border-top-color:var(--cyan)}
.anat-card:nth-child(3n){border-top-color:var(--violet)}
.ac-tag{display:inline-block;font-size:.66rem;font-weight:600;letter-spacing:.06em;padding:2px 7px;border-radius:2px;margin-bottom:7px;background:rgba(26,86,219,.08);color:var(--iris)}
.ac-name{font-family:'DM Serif Display',serif;font-size:1rem;color:var(--text);margin-bottom:5px}
.ac-desc{font-size:.82rem;color:var(--muted);line-height:1.6}

/* VISION CANVAS */
.vision-wrap{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:20px;margin:20px 0;box-shadow:0 2px 12px rgba(59,130,246,.07)}
.vw-title{font-size:.85rem;font-weight:600;color:var(--iris);margin-bottom:12px;display:flex;align-items:center;gap:8px}
#vision-canvas{width:100%;height:170px;border-radius:8px;display:block}
.vision-ctrl{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;align-items:center}
.v-btn{padding:6px 14px;border:1px solid var(--border);border-radius:5px;background:var(--soft);color:var(--iris);font-size:.78rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:'DM Sans',sans-serif}
.v-btn:hover,.v-btn.on{background:var(--iris);color:#fff;border-color:var(--iris)}
.v-legend{display:flex;gap:14px;font-size:.73rem;color:var(--muted);flex-wrap:wrap}
.vdot{width:8px;height:8px;border-radius:50%;display:inline-block;margin-right:4px;vertical-align:middle}

/* TABLE */
.tbl{width:100%;border-collapse:collapse;font-size:.86rem;margin:18px 0}
.tbl th{background:var(--soft);color:var(--iris);border:1px solid var(--border);padding:9px 15px;text-align:left;font-weight:600;font-size:.81rem;letter-spacing:.04em}
.tbl td{padding:9px 15px;border:1px solid var(--border);vertical-align:top;line-height:1.55;color:var(--text)}
.tbl tr:nth-child(odd) td{background:rgba(59,130,246,.025)}
.tbl tr:hover td{background:rgba(59,130,246,.06)}
.badge{display:inline-block;padding:2px 7px;border-radius:3px;font-size:.69rem;font-weight:600}
.b-b{background:rgba(26,86,219,.12);color:var(--iris)}
.b-c{background:rgba(6,182,212,.1);color:var(--cyan)}
.b-v{background:rgba(99,102,241,.12);color:var(--violet)}
.b-a{background:rgba(245,158,11,.1);color:var(--amber)}

/* SNELLEN */
.snellen{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:24px;margin:20px 0;text-align:center;box-shadow:0 2px 12px rgba(59,130,246,.07)}
.snellen-title{font-size:.82rem;font-weight:600;color:var(--iris);margin-bottom:16px;letter-spacing:.06em;text-transform:uppercase}
.snellen-row{line-height:1;margin-bottom:4px;font-family:'DM Serif Display',serif;color:var(--text);letter-spacing:.12em;font-weight:400}

/* INFO BOX */
.ib{border-radius:8px;padding:17px 21px;margin:20px 0}
.ib-b{background:rgba(26,86,219,.05);border:1px solid rgba(26,86,219,.15);border-left:4px solid var(--iris)}
.ib-c{background:rgba(6,182,212,.05);border:1px solid rgba(6,182,212,.15);border-left:4px solid var(--cyan)}
.ib-v{background:rgba(99,102,241,.05);border:1px solid rgba(99,102,241,.15);border-left:4px solid var(--violet)}
.ib-title{font-family:'DM Serif Display',serif;font-size:1rem;margin-bottom:5px;color:var(--text)}
.ib p{font-size:.87rem;color:var(--muted);margin:0;line-height:1.72}

/* PATHO */
.patho{background:var(--white);border:1px solid var(--border);border-radius:10px;padding:18px;margin-bottom:11px;display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;box-shadow:0 2px 8px rgba(0,0,0,.04);transition:border-color .2s,box-shadow .2s}
.patho:hover{border-color:rgba(26,86,219,.35);box-shadow:0 4px 18px rgba(26,86,219,.08)}
.patho-ico{width:40px;height:40px;border-radius:8px;background:rgba(26,86,219,.07);display:flex;align-items:center;justify-content:center;font-size:1.25rem;flex-shrink:0}
.patho-body strong{display:block;font-family:'DM Serif Display',serif;font-size:1rem;color:var(--text);margin-bottom:4px}
.patho-body p{font-size:.84rem;color:var(--muted);line-height:1.65;margin:0}
.ptag{display:inline-block;font-size:.67rem;font-weight:600;padding:2px 7px;border-radius:3px;margin-bottom:5px}
.pt-ref{background:rgba(26,86,219,.1);color:var(--iris)}
.pt-glau{background:rgba(99,102,241,.1);color:var(--violet)}
.pt-ret{background:rgba(244,63,94,.1);color:var(--rose)}
.pt-inf{background:rgba(245,158,11,.1);color:var(--amber)}
.pt-deg{background:rgba(100,116,139,.1);color:#475569}

/* SIDEBAR */
.sidebar{position:sticky;top:62px}
.widget{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:14px;box-shadow:0 2px 10px rgba(59,130,246,.05)}
.w-title{font-family:'DM Serif Display',serif;font-size:1.1rem;color:var(--text);margin-bottom:13px;padding-bottom:10px;border-bottom:2px solid var(--iris)}
.sr{display:flex;justify-content:space-between;align-items:baseline;padding:7px 0;border-bottom:1px solid var(--border);font-size:.83rem}
.sr:last-child{border-bottom:none}
.sr .sl{color:var(--muted)}
.sr .sv{font-weight:600;color:var(--iris);font-family:'DM Serif Display',serif;font-size:.95rem}
.spec-bar{margin:8px 0}
.sb-label{font-size:.74rem;color:var(--muted);display:flex;justify-content:space-between;margin-bottom:3px}
.sb-track{height:7px;background:var(--border);border-radius:4px;overflow:hidden}
.sb-fill{height:100%;border-radius:4px;transition:width 1.4s ease}

footer{background:var(--soft);border-top:1px solid var(--border);text-align:center;padding:26px;font-size:.77rem;color:var(--muted)}
footer strong{color:var(--text)}

@media(max-width:820px){.hero-inner,.page-wrap{grid-template-columns:1fr}.sidebar{position:static}.anat-grid{grid-template-columns:1fr 1fr}.nav-wrap,.page-wrap{padding-left:20px;padding-right:20px}.hero-lens{display:none}}
@media(max-width:500px){.anat-grid{grid-template-columns:1fr}.hero-inner{padding:50px 22px}}