/* PRO THESIS & SPSS SERVICES — static SEO pages (services, blog, tools…). Dark by default (same key as the main site: pts_site_theme). */
:root{--bg:#ffffff;--bg2:#f6f8fc;--card:#ffffff;--card2:#f1f5fb;--line:#e2e8f0;--line2:#cbd5e1;--t1:#0f172a;--t2:#334155;--t3:#64748b;--gold:#D69E2E;--gold2:#a8740f;--blue:#2563eb;--vio:#6d28d9;--depth:#dfe5ef;--shadow:0 18px 40px -22px rgba(15,23,42,.35);--glass:rgba(255,255,255,.86);--grad:linear-gradient(105deg,#0A1628 0%,#1A365D 38%,#3730A3 72%,#6D28D9 100%);color-scheme:only light}
html.dark{--bg:#070e1c;--bg2:#0a1324;--card:#101a2e;--card2:#0c1526;--line:#22304b;--line2:#34435f;--t1:#eef2fb;--t2:#cfd8e6;--t3:#93a3bd;--gold:#F0C35A;--gold2:#F6C76B;--blue:#7aa2ff;--vio:#a78bfa;--depth:#050a15;--shadow:0 22px 50px -24px rgba(0,0,0,.8);--glass:rgba(13,22,42,.86);--grad:linear-gradient(105deg,#f8fafc 0%,#dbeafe 40%,#c7d2fe 72%,#f6d58e 100%);color-scheme:dark}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--t2);font:16px/1.7 "Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--t1);line-height:1.2;margin:0}
:focus-visible{outline:2px solid #3b82f6;outline-offset:3px}
.wrap{max-width:1140px;margin:0 auto;padding:0 16px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:var(--card);padding:8px 12px;border-radius:8px;z-index:99}.skip:focus{left:8px}

/* header */
.hd{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;gap:10px;height:64px}
.brand{display:flex;align-items:center;gap:9px;color:var(--t1);font-weight:800;font-size:14px;letter-spacing:.01em;min-width:0}.brand:hover{text-decoration:none}
.brand i{flex:none;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;font-style:normal;font-size:13px;color:#fff;background:linear-gradient(135deg,#1e3a8a,#6d28d9);box-shadow:0 4px 0 #1e1b4b}
.brand b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand b em{font-style:normal;color:var(--gold)}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav a.l{padding:8px 11px;border-radius:10px;color:var(--t2);font-weight:600;font-size:14px}.nav a.l:hover{background:var(--card2);text-decoration:none;color:var(--t1)}.nav a.l[aria-current]{color:var(--t1);background:var(--card2)}
.ib{flex:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line2);background:var(--card);color:var(--t1);display:grid;place-items:center;font-size:17px;cursor:pointer}
.menu-btn{display:none}
.mnav{display:none;border-top:1px solid var(--line);padding:10px 16px 16px;background:var(--bg)}
.mnav a{display:flex;align-items:center;gap:10px;min-height:46px;padding:0 12px;border-radius:12px;color:var(--t1);font-weight:600}.mnav a:hover{background:var(--card2);text-decoration:none}
.mnav.open{display:block;animation:rise .35s ease both}
@media(max-width:1023px){.nav a.l{display:none}.menu-btn{display:grid}.nav .btn.hide-m{display:none}}
@media(max-width:480px){.brand b{white-space:normal;line-height:1.15;font-size:12px}.brand i{width:32px;height:32px}.nav .btn{padding:0 11px;font-size:13px}}

/* 3D buttons */
.btn{--c1:#f3c766;--c2:#d99a2b;--d:#9a6a14;--tx:#1c1400;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:14px;border:0;font:700 15px/1 "Plus Jakarta Sans",system-ui,sans-serif;color:var(--tx);background:linear-gradient(var(--c1),var(--c2));box-shadow:0 5px 0 var(--d),0 12px 22px -8px rgba(0,0,0,.45);cursor:pointer;transition:transform .14s ease,box-shadow .14s ease,filter .2s;white-space:nowrap;text-decoration:none}
.btn:hover{text-decoration:none;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 7px 0 var(--d),0 16px 26px -8px rgba(0,0,0,.5)}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--d),0 6px 12px -6px rgba(0,0,0,.4)}
.btn.blue{--c1:#5d87ff;--c2:#3b5be0;--d:#24399a;--tx:#fff}
.btn.green{--c1:#2fd47f;--c2:#16a35c;--d:#0d6b3b;--tx:#fff}
.btn.ghost{--c1:var(--card);--c2:var(--card);--d:var(--line2);--tx:var(--t1);border:1px solid var(--line2)}
.btn.sm{min-height:40px;padding:0 14px;font-size:14px;border-radius:12px}
.btn.wide{width:100%}

/* rise-in (only gentle rise, nothing from the sides) */
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
html.js .rv{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
html.js .rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){html.js .rv{opacity:1;transform:none;transition:none}*{animation:none!important}}

/* page hero with 3D photo */
.hero{position:relative;padding:44px 0 30px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-30% -10% auto;height:520px;background:radial-gradient(600px 300px at 20% 30%,color-mix(in srgb,var(--vio) 22%,transparent),transparent 70%),radial-gradient(500px 280px at 85% 20%,color-mix(in srgb,var(--gold) 16%,transparent),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.crumb{font-size:13px;color:var(--t3);margin-bottom:12px}.crumb a{color:var(--t3)}.crumb span{margin:0 6px}
.kick{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--gold2)}
.h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;letter-spacing:-.02em;margin:12px 0 14px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:18px;color:var(--t2);max-width:620px;margin:0}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{font-size:13px;font-weight:600;padding:6px 12px;border-radius:99px;border:1px solid var(--line2);background:var(--card);color:var(--t2)}
.scene{perspective:1100px;padding:18px}
.stack{position:relative;transform:rotateY(-12deg) rotateX(5deg);transform-style:preserve-3d;transition:transform .6s cubic-bezier(.16,1,.3,1)}
.scene:hover .stack{transform:rotateY(-6deg) rotateX(3deg)}
.stack .ph{border-radius:22px;overflow:hidden;border:1px solid var(--line2);box-shadow:0 40px 70px -30px rgba(0,0,0,.65),0 0 0 6px color-mix(in srgb,var(--card) 70%,transparent);aspect-ratio:16/11;background:var(--card2)}
.stack .ph img{width:100%;height:100%;object-fit:cover}
.glass{position:absolute;background:var(--glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--line2);border-radius:14px;padding:9px 12px;font-size:13px;font-weight:700;color:var(--t1);box-shadow:0 18px 30px -14px rgba(0,0,0,.55);white-space:nowrap}
.glass small{display:block;font-weight:600;color:var(--t3);font-size:11.5px}
.g1{left:-14px;top:18px;transform:translateZ(70px)}.g2{right:-12px;bottom:26px;transform:translateZ(100px)}
@media(max-width:899px){.hero .wrap{grid-template-columns:1fr;gap:18px}.scene{padding:6px 10px 0}.stack{transform:none}.scene:hover .stack{transform:none}.g1{left:8px;top:8px}.g2{right:8px;bottom:8px}.glass{transform:none;font-size:12px}}

/* sections */
.sec{padding:46px 0}
.sec.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sh{margin-bottom:24px}.sh h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.01em;margin-top:8px}.sh p{margin:8px 0 0;color:var(--t3);max-width:680px}
.grid{display:grid;gap:20px}
.g2c{grid-template-columns:repeat(2,minmax(0,1fr))}.g3c{grid-template-columns:repeat(3,minmax(0,1fr))}.g4c{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:899px){.g3c,.g4c{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:599px){.g2c,.g3c,.g4c{grid-template-columns:1fr}}

/* 3D cards (tilt on desktop mouse only — see site.js) */
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:0 6px 0 var(--depth),var(--shadow);transition:transform .35s cubic-bezier(.16,1,.3,1),box-shadow .35s;transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(var(--ty,0px));min-width:0}
.card.hov{--ty:-4px;box-shadow:0 12px 0 var(--depth),0 30px 50px -24px rgba(0,0,0,.55)}
a.card{display:block;color:inherit}a.card:hover{text-decoration:none}
.card .im{aspect-ratio:16/9;overflow:hidden;border-radius:19px 19px 0 0;background:var(--card2)}
.card .im img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.card.hov .im img{transform:scale(1.04)}
.card .bd{padding:18px 18px 20px}
.card h3{font-size:18px;font-weight:800;margin:0 0 6px}
.card p{margin:0;color:var(--t3);font-size:14.5px;line-height:1.6}
.card .more{display:inline-block;margin-top:12px;font-weight:700;font-size:14px;color:var(--blue)}
.tile{flex:none;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,color-mix(in srgb,var(--c,#6366f1) 75%,#fff),var(--c,#6366f1));box-shadow:0 6px 0 color-mix(in srgb,var(--c,#6366f1) 55%,#000),0 12px 18px -8px rgba(0,0,0,.45)}
.card .im+.bd .tile{margin-top:-41px;margin-bottom:12px;position:relative}
.feat{padding:20px}.feat .tile{margin-bottom:14px}
.meta{font-size:12.5px;color:var(--t3);font-weight:600;display:flex;flex-wrap:wrap;gap:6px 12px;margin-bottom:6px}

/* lists, steps, faq */
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.ticks li{display:flex;gap:10px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px;color:var(--t1);font-weight:600;font-size:15px}
.ticks li::before{content:"✅";flex:none}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 5px 0 var(--depth)}
.step b{display:block;color:var(--t1);font-size:16px;margin:10px 0 4px}.step p{margin:0;font-size:14px;color:var(--t3)}
.step .n{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;font-weight:800;color:#fff;background:linear-gradient(135deg,#5d87ff,#7c3aed);box-shadow:0 4px 0 #312e81}
@media(max-width:899px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}
details.q{background:var(--card);border:1px solid var(--line);border-radius:16px;margin-bottom:10px;box-shadow:0 4px 0 var(--depth)}
details.q summary{cursor:pointer;list-style:none;padding:15px 18px;font-weight:700;color:var(--t1);display:flex;justify-content:space-between;gap:12px}
details.q summary::-webkit-details-marker{display:none}
details.q summary::after{content:"＋";color:var(--gold2);flex:none;transition:transform .25s}
details.q[open] summary::after{transform:rotate(45deg)}
details.q .a{padding:0 18px 16px;color:var(--t2)}
details.q .a ul{margin:6px 0 0;padding-left:20px}
.pkg h3{font-size:16px}

/* order / cta box */
.cta{border-radius:24px;padding:26px;background:linear-gradient(135deg,#1e3a8a,#5b21b6);color:#e0e7ff;display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;box-shadow:0 10px 0 #1e1b4b,0 30px 50px -24px rgba(0,0,0,.6)}
.cta h2,.cta h3{color:#fff;font-size:clamp(20px,2.6vw,26px)}.cta p{margin:6px 0 0;color:#c7d2fe;max-width:560px}
.cta .btns{margin-top:0}

/* article */
.post-hd{padding:36px 0 10px}
.post-hd .h1{font-family:Fraunces,Georgia,serif;font-weight:700;max-width:860px}
.cover{border-radius:24px;overflow:hidden;aspect-ratio:21/9;border:1px solid var(--line);box-shadow:0 8px 0 var(--depth),var(--shadow);margin:18px 0 6px}
.cover img{width:100%;height:100%;object-fit:cover}
.post{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;padding-top:24px;padding-bottom:40px}
@media(max-width:959px){.post{grid-template-columns:1fr}.cover{aspect-ratio:16/9}}
.toc{background:var(--card2);border:1px solid var(--line);border-radius:16px;padding:14px 18px;margin-bottom:22px;font-size:14.5px}
.toc b{color:var(--t1)}.toc ol{margin:8px 0 0;padding-left:20px}.toc li{margin:3px 0}
.prose{font-size:17px;line-height:1.8;color:var(--t2);min-width:0}
.prose h2{font-size:clamp(21px,2.4vw,26px);font-weight:800;margin:34px 0 10px;scroll-margin-top:84px}
.prose h3{font-size:19px;margin:24px 0 8px}
.prose p{margin:0 0 16px}.prose ul,.prose ol{margin:0 0 18px;padding-left:24px}.prose li{margin:6px 0}
.prose strong{color:var(--t1)}
.prose table{width:100%;border-collapse:collapse;margin:8px 0 20px;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line2);padding:9px 11px;text-align:left;vertical-align:top}
.prose th{background:var(--card2);color:var(--t1)}
.side{position:sticky;top:84px;align-self:start;display:grid;gap:16px}
@media(max-width:959px){.side{position:static}}
.side .card{padding:18px}.side h3{font-size:17px}
.bar{position:fixed;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--gold),#3b82f6,#10b981);z-index:60}

/* filters + tools */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.filters button{font:600 13.5px "Plus Jakarta Sans",system-ui,sans-serif;padding:8px 14px;border-radius:99px;border:1px solid var(--line2);background:var(--card);color:var(--t2);cursor:pointer}
.filters button[aria-pressed=true]{background:linear-gradient(135deg,#5d87ff,#7c3aed);color:#fff;border-color:transparent}
.form{display:grid;gap:14px}
.field label{display:block;font-weight:700;color:var(--t1);font-size:14.5px;margin-bottom:6px}
.field small{display:block;color:var(--t3);font-size:12.5px;margin-top:4px}
.field input,.field select{width:100%;min-height:46px;border-radius:12px;border:1px solid var(--line2);background:var(--card2);color:var(--t1);padding:0 14px;font:600 16px "Plus Jakarta Sans",system-ui,sans-serif}
.res{display:grid;gap:10px}
.res .r{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.res .r b{font-size:22px;color:var(--t1);font-family:"JetBrains Mono",monospace}
.res .r.main{background:linear-gradient(135deg,color-mix(in srgb,#5d87ff 22%,var(--card)),color-mix(in srgb,#7c3aed 22%,var(--card)));border-color:transparent}
.opts{display:grid;gap:10px}
.opts button{text-align:left;font:600 15px "Plus Jakarta Sans",system-ui,sans-serif;padding:14px 16px;border-radius:14px;border:1px solid var(--line2);background:var(--card);color:var(--t1);cursor:pointer;box-shadow:0 4px 0 var(--depth);transition:transform .12s}
.opts button:hover{border-color:var(--blue)}.opts button:active{transform:translateY(3px);box-shadow:0 1px 0 var(--depth)}

/* footer */
.ft{margin-top:50px;border-top:1px solid var(--line);background:var(--bg2);padding:40px 0 calc(28px + env(safe-area-inset-bottom))}
.ft .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
@media(max-width:899px){.ft .cols{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.ft .cols{grid-template-columns:1fr}}
.ft h4{font-size:14px;margin-bottom:8px}.ft a{display:block;color:var(--t3);font-size:14px;padding:4px 0}.ft p{font-size:14px;color:var(--t3);margin:8px 0}
.ft .bt{margin-top:26px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13px;color:var(--t3)}
.wa-fab{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));z-index:30;width:54px;height:54px;border-radius:18px;display:grid;place-items:center;font-size:26px;background:linear-gradient(#2fd47f,#16a35c);box-shadow:0 5px 0 #0d6b3b,0 14px 24px -8px rgba(0,0,0,.5)}
.wa-fab:hover{text-decoration:none;transform:translateY(-2px)}
@media(max-width:520px){.btn{white-space:normal;text-align:center;line-height:1.25;padding-top:10px;padding-bottom:10px;max-width:100%}}