/* DipSkill — shared styles. Layout: 1200px centered container, sticky top bar, card grids that collapse to one column on phones. */
:root{
  --brand:#5b3fe0; --brand-600:#4a2fd0; --brand-soft:#efebff; --brand-ink:#4b33d6;
  --red:#ff4f5e; --amber:#ffb400; --green:#00b37e; --blue:#2f6bff;
  --bg:#ffffff; --bg-alt:#f6f6fb; --surface:#ffffff; --surface-2:#f8f8fc;
  --line:#e7e6f0; --line-strong:#d6d4e6;
  --fg:#12122a; --fg-2:#4a4a63; --muted:#7b7a93;
  --chip:#f1f0f8; --input:#ffffff;
  --shadow:0 1px 2px rgba(20,18,60,.05),0 8px 24px -12px rgba(20,18,60,.14);
  --shadow-lg:0 24px 60px -24px rgba(40,30,120,.28);
  --hand:#5b3fe0;
  --font:"Plus Jakarta Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-hand:"Caveat","Segoe Script","Bradley Hand",cursive;
  --r-sm:8px; --r:12px; --r-lg:18px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --brand:#6a4ff0; --brand-600:#7b63ff; --brand-soft:#221c52; --brand-ink:#a99bff;
  --bg:#0a0f22; --bg-alt:#0d1329; --surface:#121935; --surface-2:#161e3d;
  --line:#232c52; --line-strong:#2f3a66;
  --fg:#f3f3fb; --fg-2:#b9bcd6; --muted:#8a8fb0;
  --chip:#1b2347; --input:#0f1530;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 28px -14px rgba(0,0,0,.6);
  --shadow-lg:0 24px 60px -24px rgba(0,0,0,.7);
  --hand:#c9bfff; color-scheme:dark}}
:root[data-theme="dark"]{
  --brand:#6a4ff0; --brand-600:#7b63ff; --brand-soft:#221c52; --brand-ink:#a99bff;
  --bg:#0a0f22; --bg-alt:#0d1329; --surface:#121935; --surface-2:#161e3d;
  --line:#232c52; --line-strong:#2f3a66;
  --fg:#f3f3fb; --fg-2:#b9bcd6; --muted:#8a8fb0;
  --chip:#1b2347; --input:#0f1530;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 28px -14px rgba(0,0,0,.6);
  --shadow-lg:0 24px 60px -24px rgba(0,0,0,.7);
  --hand:#c9bfff; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.6 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--bg)}
img{max-width:100%;height:auto;display:block}
[hidden]{display:none!important}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em;text-wrap:balance}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.wrap{max-width:1200px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.i{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.i-sm{width:14px;height:14px}.i-lg{width:24px;height:24px}

/* ---------- header ---------- */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:flex;align-items:center}
.logo img{height:30px;width:auto}
.nav{display:flex;gap:4px;align-items:center;flex:1}
.nav>a,.nav .dd>button{display:inline-flex;align-items:center;gap:4px;padding:8px 12px;border-radius:8px;font-weight:600;font-size:14px;color:var(--fg-2);background:none;border:0;cursor:pointer}
.nav>a:hover,.nav .dd>button:hover{color:var(--fg);background:var(--chip)}
.nav a.on,.nav .dd.on>button{color:var(--brand-ink)}
.nav a.on{position:relative}
.dd{position:relative}
.dd-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:240px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-lg);padding:8px;display:none}
.dd:hover .dd-menu,.dd:focus-within .dd-menu,.dd.open .dd-menu{display:block}
.dd-menu::before{content:"";position:absolute;inset:-10px 0 auto;height:10px}
.dd-menu a{display:flex;gap:12px;align-items:flex-start;padding:10px;border-radius:8px}
.dd-menu a:hover{background:var(--chip)}
.dd-menu b{display:block;font-size:14px}
.dd-menu small{color:var(--muted);font-size:12.5px;line-height:1.4;display:block}
.dd-menu .ic{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-ink);flex:none}
.actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;border:1px solid var(--line);background:var(--surface);color:var(--fg-2);cursor:pointer}
.icon-btn:hover{color:var(--fg);border-color:var(--line-strong)}
.theme-btn .sun{display:none}
:root[data-theme="dark"] .theme-btn .sun{display:block}:root[data-theme="dark"] .theme-btn .moon{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .theme-btn .sun{display:block}:root:not([data-theme="light"]) .theme-btn .moon{display:none}}
.menu-btn{display:none}
.mobile-nav{display:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;border-radius:10px;font-weight:700;font-size:14px;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s,transform .15s}
.btn-sm{height:34px;padding:0 14px;font-size:13px;border-radius:8px}
.btn-lg{height:50px;padding:0 24px;font-size:15px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -10px var(--brand)}
.btn-primary:hover{background:var(--brand-600)}
.btn-outline{border-color:var(--brand);color:var(--brand-ink);background:transparent}
.btn-outline:hover{background:var(--brand-soft)}
.btn-ghost{border-color:var(--line);background:var(--surface);color:var(--fg)}
.btn-ghost:hover{border-color:var(--line-strong)}
.btn-block{width:100%}
.link{color:var(--brand-ink);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.link:hover{text-decoration:underline}

/* ---------- common ---------- */
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.crumb{font-size:12.5px;color:var(--muted);display:flex;gap:6px;align-items:center;margin-bottom:10px}
.crumb a:hover{color:var(--brand-ink)}
.page-head{padding:44px 0 28px;position:relative}
.page-head h1{font-size:clamp(30px,4vw,42px);font-weight:800}
.page-head p.lead{color:var(--fg-2);margin-top:10px;max-width:60ch;font-size:16px}
.section{padding:56px 0}
.section-sm{padding:32px 0}
.sec-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.sec-head h2{font-size:24px;font-weight:800}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow)}
.muted{color:var(--muted)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;background:var(--chip);font-size:12px;font-weight:600;color:var(--fg-2)}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tab{height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-weight:600;font-size:13px;color:var(--fg-2);cursor:pointer}
.tab:hover{border-color:var(--line-strong);color:var(--fg)}
.tab.on{background:var(--brand);border-color:var(--brand);color:#fff}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600}
.input,select.input,textarea.input{width:100%;height:46px;border:1px solid var(--line);background:var(--input);border-radius:10px;padding:0 14px;outline:none;transition:border-color .15s,box-shadow .15s}
textarea.input{height:auto;min-height:130px;padding:12px 14px;resize:vertical}
.input:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 22%,transparent)}
.input::placeholder{color:var(--muted)}
.searchbar{display:flex;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:var(--shadow);align-items:center}
.searchbar .seg{display:flex;align-items:center;gap:8px;padding:0 12px;flex:1;min-width:0;color:var(--muted)}
.searchbar .seg+.seg{border-left:1px solid var(--line)}
.searchbar input,.searchbar select{border:0;background:transparent;outline:none;height:40px;width:100%;min-width:0;color:var(--fg)}
.searchbar select{cursor:pointer}
.stars{color:var(--amber);font-size:12px;letter-spacing:1px}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%) translateY(20px);background:var(--fg);color:var(--bg);padding:12px 18px;border-radius:10px;font-weight:600;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:80;max-width:calc(100% - 32px)}
.toast.show{opacity:1;transform:translateX(-50%)}

/* decorative brand ring (from the D mark) */
.ring{position:absolute;pointer-events:none;z-index:0}
.ring svg{width:100%;height:100%;display:block}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);background:var(--bg-alt);margin-top:40px}
.foot .wrap{padding-block:44px 28px}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}
.foot h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:14px;color:var(--fg-2)}
.foot a:hover{color:var(--brand-ink)}
.foot-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:32px;padding-top:20px;font-size:13px;color:var(--muted)}

/* ---------- responsive header ---------- */
@media (max-width:920px){
  .nav,.actions .hide-sm{display:none}
  .menu-btn{display:grid}
  .top .wrap{justify-content:space-between}
  .mobile-nav{position:fixed;top:calc(69px + env(safe-area-inset-top,0px));left:0;right:0;bottom:0;background:var(--bg);z-index:49;padding:16px max(20px,env(safe-area-inset-left,0px)) 32px;overflow:auto;border-top:1px solid var(--line)}
  .mobile-nav.open{display:block}
  .mobile-nav a{display:flex;align-items:center;gap:10px;padding:13px 4px;border-bottom:1px solid var(--line);font-weight:600}
  .mobile-nav .sub{padding-left:22px;font-weight:500;color:var(--fg-2)}
  .mobile-nav .btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-grid>div:first-child{grid-column:1/-1}
}
@media (max-width:560px){
  .top .wrap{gap:10px}
  .actions .btn-primary{display:none}
  .searchbar{flex-direction:column;align-items:stretch;padding:8px;gap:6px}
  .searchbar .seg+.seg{border-left:0;border-top:1px solid var(--line)}
  .searchbar .btn{width:100%}
}
.mgroup{margin:14px 0 2px;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
/* v2: nav underline, footer to match home design */
.nav a.on::after{content:"";position:absolute;left:12px;right:12px;bottom:-15px;height:2px;border-radius:2px;background:var(--brand)}
.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
.social{display:flex;gap:10px;flex-wrap:wrap}
.social a{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--fg);color:var(--bg);transition:transform .15s}
.social a:hover{transform:translateY(-2px);color:var(--bg)}
.icon-btn.round{border-radius:50%}
@media (max-width:920px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child,.social-col{grid-column:1/-1}}