@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');
:root{--bg:#f7f8fa;--paper:#fff;--ink:#1a1d22;--muted:#5b6472;--line:#e1e5ea;--line-strong:#c7cfd8;--accent:#1e4fa3;--accent-soft:#eaf0fc;--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:'IBM Plex Sans',Arial,sans-serif;font-size:16px;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.c{width:min(calc(100% - 48px),var(--max));margin:auto}
header{background:var(--paper);border-bottom:1px solid var(--line)}.hdr{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:36px}.name{color:var(--ink);font-size:19px;font-weight:600;letter-spacing:-.01em}.role{display:block;margin-top:4px;color:var(--muted);font-size:13px;font-weight:400}nav{display:flex;gap:30px}nav a{color:var(--muted);font-size:14px;font-weight:500;padding:6px 0;border-bottom:2px solid transparent}nav a.on{color:var(--ink);border-bottom-color:var(--accent)}nav a:hover{color:var(--ink);text-decoration:none}
.home{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,.6fr);gap:28px;padding:56px 0 72px}.home section{background:var(--paper);padding:44px 46px;border-radius:2px;border-top:3px solid var(--accent)}.de-label{display:block;margin-bottom:14px;color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.01em}.lead{margin:0 0 22px;max-width:700px;font-size:28px;line-height:1.42;font-weight:600;letter-spacing:-.01em}.home section p:not(.lead){color:#3a4048}.side{background:var(--paper);border:1px solid var(--line);border-radius:2px;align-self:start}.meta{padding:0;margin:0;list-style:none}.meta li{padding:16px 22px;border-bottom:1px solid var(--line);font-size:14px}.meta b{display:block;margin-bottom:4px;color:var(--muted);font-size:11px;font-weight:600;letter-spacing:.04em}.contact{padding:22px}.contact h2{margin:0 0 12px;font-size:15px;font-weight:600}.contact p{margin:0 0 8px;font-size:14px}.contact a{margin-right:12px}.contact a:last-child{margin-right:0}
.page{display:grid;grid-template-columns:190px minmax(0,1fr);gap:52px;padding:54px 0 72px;align-items:start}.pt{position:sticky;top:26px}.pt:before{content:"";display:block;width:42px;height:3px;margin-bottom:16px;background:var(--accent)}.pt h1{margin:0;font-size:29px;line-height:1.2;letter-spacing:-.02em}.content{max-width:820px}.sec{margin:0;padding:28px 0;border-top:1px solid var(--line)}.sec:first-child{padding-top:0;border-top:0}.sec h2{margin:0 0 16px;font-size:21px;line-height:1.35}.sec h2:after{content:"";display:block;width:28px;margin-top:10px;border-bottom:2px solid var(--accent)}.intro{padding-bottom:30px}.intro .lead{font-size:26px}.panel{padding:26px 28px;background:var(--paper);border:1px solid var(--line);border-top:3px solid var(--accent)}.two{display:grid;grid-template-columns:1fr 1fr;gap:16px;border-top:0;padding:0}.two .panel{border-top-color:var(--line-strong)}.exam-tags{display:flex;flex-wrap:wrap;gap:8px}.exam-tag{padding:8px 11px;border:1px solid var(--line);background:var(--bg);font-size:14px;font-weight:500}.data{display:grid;grid-template-columns:165px 1fr;gap:24px;padding:14px 0;border-bottom:1px solid var(--line)}.key{color:var(--muted);font-weight:600}.current{padding:22px 24px;background:var(--accent-soft);border-left:3px solid var(--accent)}.current p:first-child{margin-top:0}.current p:last-child{margin-bottom:0}
.language-list{border-top:2px solid var(--line-strong)}.language-group{display:grid;grid-template-columns:180px 1fr;gap:26px;padding:22px 0;border-bottom:1px solid var(--line)}.language-name{font-size:17px;font-weight:600}.language-level{display:inline-block;margin-top:9px;margin-left:9px;padding:2px 7px;border:1px solid var(--accent);color:var(--accent);font-size:12px;font-weight:600}.cert-list{display:grid;gap:9px}.cert-row{display:grid;grid-template-columns:190px 1fr;gap:18px}.cert-name{font-weight:600}.cert-meta,.exam-note{color:var(--muted)}.item{display:grid;grid-template-columns:88px 1fr;gap:20px;padding:13px 0;border-bottom:1px solid var(--line)}.year{font-weight:600}.content>.contact{margin-top:30px;background:var(--paper);border:1px solid var(--line);border-top:3px solid var(--accent)}
.term{position:relative;display:inline;border-bottom:1px dotted var(--accent);cursor:help}.term:focus{outline:2px solid var(--accent);outline-offset:2px}.term:after{content:attr(data-tip);position:absolute;left:0;bottom:calc(100% + 9px);z-index:5;width:290px;padding:11px 13px;background:var(--paper);color:var(--ink);border:1px solid var(--line-strong);border-top:3px solid var(--accent);box-shadow:0 7px 20px rgba(20,30,45,.12);font-size:12px;line-height:1.45;font-weight:400;opacity:0;visibility:hidden;transform:translateY(4px);transition:.12s;pointer-events:none}.term:hover:after,.term:focus:after{opacity:1;visibility:visible;transform:translateY(0)}
.wiki-intro{max-width:760px;margin:0 0 30px;font-size:18px;line-height:1.55}.wiki-index{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 30px}.wiki-index a{padding:7px 10px;background:var(--paper);border:1px solid var(--line);font-size:13px;font-weight:500}.exam-entry{display:grid;grid-template-columns:185px minmax(0,1fr);gap:30px;padding:28px 0;border-top:1px solid var(--line)}.exam-entry:first-of-type{border-top:3px solid var(--accent)}.exam-code{font-size:19px;font-weight:600;line-height:1.25}.exam-level{display:block;margin-top:7px;color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.05em}.exam-entry h2{margin:0 0 8px;font-size:19px}.exam-purpose{font-weight:600}.exam-entry p{margin:0 0 10px}footer{background:var(--paper);border-top:1px solid var(--line);color:var(--muted);font-size:13px}.f{min-height:56px;display:flex;align-items:center;justify-content:space-between}
@media(max-width:800px){.c{width:min(calc(100% - 32px),var(--max))}.hdr{min-height:auto;padding:18px 0;flex-direction:column;align-items:flex-start;gap:14px}nav{width:100%;gap:18px;overflow:auto}.home,.page,.two{grid-template-columns:1fr}.home{padding:32px 0 48px}.home section{padding:30px 26px}.lead{font-size:24px}.page{padding:34px 0 48px;gap:28px}.pt{position:static}.language-group,.cert-row,.data,.item,.exam-entry{grid-template-columns:1fr;gap:9px}.term:after{width:min(270px,75vw)}.f{min-height:64px;align-items:flex-start;justify-content:center;flex-direction:column;padding:10px 0}.contact a{display:inline-block;margin-bottom:6px}}


/* process */
.approach-intro{max-width:700px;margin:0 0 20px;color:#3a4048}
.process{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr auto 1fr;align-items:stretch;gap:8px;margin-top:20px}
.process-step{min-width:0;padding:18px 14px;background:var(--paper);border:1px solid var(--line);border-top:3px solid var(--accent)}
.process-num{display:block;margin-bottom:15px;color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.08em}
.process-step strong{display:block;font-size:15px;line-height:1.3}
.process-step p{margin:8px 0 0;color:var(--muted);font-size:12.5px;line-height:1.45}
.process-arrow{align-self:center;color:var(--accent);font-size:19px;font-weight:600}
.approach-note{margin:18px 0 0;padding-left:15px;border-left:2px solid var(--accent);color:var(--muted);font-size:14px}

/* contacts */
.contact-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px}
.contact-links a{display:flex!important;flex-direction:column;margin:0!important;padding:8px 0;border-bottom:1px solid var(--line);line-height:1.25}
.contact-links a:hover{text-decoration:none}.contact-links a span{font-size:14px;font-weight:600}.contact-links a small{margin-top:3px;color:var(--muted);font-size:11px;font-weight:400}
.side .contact-links{grid-template-columns:1fr}.side .contact-links a{padding:9px 0}

/* subpage and certificates */
.subpage-link{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 30px;padding:18px 20px;background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--accent);color:var(--ink)}
.subpage-link:hover{text-decoration:none;border-color:var(--line-strong)}.subpage-link .de-label{margin-bottom:2px}.subpage-arrow{color:var(--accent);font-size:22px}
.back-link{display:inline-block;margin-bottom:22px;font-size:13px;font-weight:600}.cert-lead{max-width:720px}.cert-page-note{max-width:700px;color:var(--muted)}
.certificate-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.certificate-slot{min-height:150px;padding:22px;background:var(--paper);border:1px dashed var(--line-strong);display:flex;flex-direction:column;justify-content:flex-end}.certificate-slot .slot-label{margin-bottom:auto;color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.certificate-slot strong{font-size:15px}.certificate-slot>span:last-child{margin-top:6px;color:var(--muted);font-size:12px}

/* exam categories */
.exam-category{margin:46px 0 0;padding:18px 0 12px;border-top:3px solid var(--accent);font-size:24px}.exam-category .de-label{margin-bottom:5px}.exam-category+.exam-entry{border-top:1px solid var(--line)}
.exam-features{margin-top:14px;padding:12px 14px;background:var(--accent-soft);border-left:2px solid var(--accent);font-size:14px}.exam-features p{margin:5px 0 0}.exam-lines{margin-top:12px;padding-top:8px;border-top:1px solid var(--line)}.exam-lines p{margin:5px 0;font-size:14px}

@media(max-width:1000px){.process{grid-template-columns:1fr;gap:8px}.process-arrow{transform:rotate(90deg);justify-self:center}.process-step p{font-size:13px}}
@media(max-width:800px){.contact-links,.certificate-grid{grid-template-columns:1fr}.exam-category{margin-top:36px}}

/* profile photo */
.profile-photo-wrap{display:flex;justify-content:center;padding:26px 22px 22px;border-bottom:1px solid var(--line)}
.profile-photo{width:148px;height:148px;object-fit:cover;object-position:50% 24%;border-radius:50%;border:4px solid var(--paper);outline:1px solid var(--line-strong);display:block}
@media(max-width:800px){.profile-photo{width:132px;height:132px}.profile-photo-wrap{padding:22px}}

/* certificate gallery */
.certificate-filled{min-height:0;justify-content:flex-start;text-decoration:none;color:inherit;border-style:solid;padding:14px;transition:border-color .15s ease,transform .15s ease}.certificate-filled:hover{border-color:var(--accent);transform:translateY(-1px)}.certificate-filled .slot-label{margin-bottom:10px}.certificate-filled img{display:block;width:100%;height:300px;object-fit:contain;object-position:center;background:#fff;margin-bottom:14px}.certificate-filled strong{display:block;line-height:1.35}.certificate-filled>span:last-child{margin-top:0;color:var(--accent)}
@media(max-width:800px){.certificate-filled img{height:auto;max-height:520px}}

/* home layout refinement */
.home{padding-bottom:28px}
.side-focus{padding:20px 22px 22px}
.side-focus-label{display:block;margin-bottom:10px;color:var(--accent);font-size:11px;font-weight:600;letter-spacing:.05em}
.side-focus p{margin:0;padding:10px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.4}
.side-focus b{display:block;margin-bottom:3px;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.side-focus span{display:block}
.home-contact{margin-bottom:72px;background:var(--paper);border:1px solid var(--line);border-top:3px solid var(--accent);padding:22px 26px}
.home-contact h2{margin:0 0 12px;font-size:15px;font-weight:600}
.home-contact .contact-links{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px 20px}
@media(max-width:1000px){.home-contact .contact-links{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:800px){.home-contact{margin-bottom:48px}.home-contact .contact-links{grid-template-columns:1fr}.side-focus{padding:18px 22px}}

/* Right sidebar: keep a single separator between adjacent sections */
.side .meta li:last-child{border-bottom:0}
/* v15: larger portrait on the home page */
.profile-photo{width:184px;height:184px}
@media(max-width:800px){.profile-photo{width:156px;height:156px}}

/* v16: contacts directly below the profile text on the home page */
.home-inline-contact{margin-top:32px;padding:22px 0 0;border-top:1px solid var(--line)}
.home-inline-contact .contact-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px}
@media(max-width:800px){.home-inline-contact{margin-top:26px}.home-inline-contact .contact-links{grid-template-columns:1fr}}