/* ============================================================
   Good Friend Solution — good.hublink.im
   Shared stylesheet · Refined IT-firm system
   ============================================================ */
:root{
  --ink:#0B1120;
  --ink-soft:#101A30;
  --ink-raised:#16223C;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --paper:#F4F1EA;
  --paper-soft:#E8E4D8;
  --paper-ink:#19223A;
  --paper-mute:#5C6377;
  --amber:#E8B24C;
  --amber-deep:#C8902F;
  --aqua:#54D2C2;
  --aqua-deep:#2BA999;
  --mist:#9AA8C8;
  --white:#F7F8FB;
  --disp:"Space Grotesk","Pretendard",sans-serif;
  --body:"Pretendard",system-ui,sans-serif;
  --mono:"Space Mono",ui-monospace,monospace;
  --wrap:1180px;
  --r:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);
  background:var(--ink);
  color:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--amber);color:var(--ink)}
:focus-visible{outline:2px solid var(--aqua);outline-offset:3px;border-radius:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}

.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.28em;text-transform:uppercase;
  color:var(--aqua);display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--aqua);opacity:.7}

/* ---------------- NAV ---------------- */
header.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .35s ease,border-color .35s ease,backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
header.nav.scrolled{background:rgba(11,17,32,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--disp);font-weight:700;font-size:18px;letter-spacing:.01em;color:var(--white)}
.brand .dot{position:relative;width:24px;height:24px;flex:none}
.brand .dot svg{width:100%;height:100%;display:block}
.brand .ko{font-family:var(--body);font-weight:700;font-size:15px;color:var(--mist);margin-left:2px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--mist);transition:color .2s;position:relative;padding:4px 0}
.nav-links a:hover{color:var(--white)}
.nav-links a.active{color:var(--white)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--amber);border-radius:2px}
.nav-cta{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink)!important;background:var(--amber);padding:9px 17px;border-radius:100px;
  transition:transform .2s,box-shadow .2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 24px -8px var(--amber)}
.nav-cta::after{display:none!important}
.nav-toggle{display:none;background:none;border:1px solid var(--line-2);color:var(--white);width:42px;height:38px;border-radius:8px;font-size:18px;cursor:pointer}

/* ---------------- PAGE HEADER (interior) ---------------- */
.page-head{position:relative;padding:148px 0 64px;overflow:hidden;border-bottom:1px solid var(--line)}
.page-head::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(120% 90% at 82% 12%,rgba(84,210,194,.10),transparent 55%),
    radial-gradient(90% 80% at 6% 95%,rgba(232,178,76,.08),transparent 55%);
}
.page-head .wrap{position:relative;z-index:1}
.page-head h1{font-family:var(--disp);font-weight:600;font-size:clamp(32px,5vw,56px);line-height:1.08;letter-spacing:-.02em;margin-top:18px}
.page-head h1 .ko{font-family:var(--body);font-weight:700}
.page-head h1 .warm{color:var(--amber);font-style:italic;font-weight:500}
.page-head p{margin-top:20px;max-width:60ch;color:var(--mist);font-size:16.5px}

/* ---------------- SECTIONS ---------------- */
section{position:relative}
.sec-pad{padding:108px 0}
.sec-head{max-width:760px;margin-bottom:60px}
.sec-head h2{font-family:var(--disp);font-weight:600;font-size:clamp(26px,4vw,44px);line-height:1.12;letter-spacing:-.015em;margin-top:20px}
.sec-head h2 .ko{font-family:var(--body);font-weight:700}
.sec-head p{margin-top:18px;font-size:16px;color:var(--mist);max-width:60ch}

.paper{background:var(--paper);color:var(--paper-ink)}
.paper .sec-head p{color:var(--paper-mute)}
.paper .eyebrow{color:var(--amber-deep)}
.paper .eyebrow::before{background:var(--amber-deep)}

/* ---------------- BUTTONS ---------------- */
.btnrow{display:flex;gap:14px;flex-wrap:wrap}
.btn{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;padding:15px 30px;border-radius:100px;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;display:inline-block}
.btn-p{background:var(--amber);color:var(--ink)}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 14px 34px -12px var(--amber)}
.btn-s{border:1px solid var(--line-2);color:var(--white)}
.btn-s:hover{border-color:var(--aqua);color:var(--aqua)}
.paper .btn-s{border-color:rgba(25,34,58,.22);color:var(--paper-ink)}
.paper .btn-s:hover{border-color:var(--aqua-deep);color:var(--aqua-deep)}

/* ---------------- PILLARS / CARDS ---------------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pillar{background:#fff;border:1px solid var(--paper-soft);border-radius:var(--r);padding:34px 30px 38px;position:relative;overflow:hidden;transition:transform .3s,box-shadow .3s}
.pillar:hover{transform:translateY(-4px);box-shadow:0 22px 40px -26px rgba(25,34,58,.4)}
.pillar .pi{font-family:var(--mono);font-size:12px;color:var(--amber-deep);letter-spacing:.16em}
.pillar h3{font-family:var(--disp);font-weight:600;font-size:23px;margin:16px 0 6px;color:var(--paper-ink)}
.pillar .sub{font-size:13.5px;color:var(--amber-deep);font-weight:600;margin-bottom:14px}
.pillar p{font-size:14.5px;color:var(--paper-mute);line-height:1.7}
.pillar .bar{position:absolute;left:0;top:0;height:3px;width:100%;background:linear-gradient(90deg,var(--amber),var(--aqua))}

/* dark variant card grid */
.eco-group{margin-bottom:52px}
.eco-glabel{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.eco-glabel .gn{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--aqua);text-transform:uppercase}
.eco-glabel .gt{font-family:var(--disp);font-weight:600;font-size:19px;color:var(--white)}
.eco-glabel .gl{flex:1;height:1px;background:var(--line)}
.eco-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:16px}
.card{background:linear-gradient(180deg,var(--ink-soft),var(--ink));border:1px solid var(--line);border-radius:16px;padding:24px 22px 26px;transition:border-color .3s,transform .3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 140% at 100% 0,rgba(84,210,194,.10),transparent 50%);opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-3px);border-color:var(--line-2)}
.card:hover::before{opacity:1}
.card .ch{display:flex;align-items:center;justify-content:space-between;gap:10px}
.card .nm{font-family:var(--disp);font-weight:600;font-size:18px}
.card .nm .ko{font-family:var(--body);font-weight:700}
.card .st{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:100px;border:1px solid var(--line-2);color:var(--mist);white-space:nowrap}
.card .st.live{color:var(--aqua);border-color:rgba(84,210,194,.4)}
.card .st.dev{color:var(--amber);border-color:rgba(232,178,76,.4)}
.card p{font-size:13.5px;color:var(--mist);margin-top:13px;line-height:1.65}

/* ---------------- TIMELINE ---------------- */
.tl{position:relative}
.tl-row{display:grid;grid-template-columns:120px 1fr;gap:30px;align-items:baseline;padding:26px 0;border-top:1px solid var(--line);position:relative}
.tl-row:hover .tl-yr{color:var(--amber)}
.tl-yr{font-family:var(--mono);font-weight:700;font-size:18px;color:var(--mist);transition:color .25s;padding-top:2px}
.tl-row.future .tl-yr{color:var(--aqua)}
.tl-body h4{font-family:var(--body);font-weight:600;font-size:17.5px;color:var(--white)}
.tl-body p{font-size:14.5px;color:var(--mist);margin-top:6px;max-width:62ch}
.tl-tag{display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);background:var(--aqua);padding:3px 9px;border-radius:100px;margin-left:10px;vertical-align:middle}
.tl-tag.dev{background:var(--amber)}

/* ---------------- VALUE GRID ---------------- */
.val-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--paper-soft);border-radius:20px;overflow:hidden;background:#fff}
.val{padding:40px 38px;border-right:1px solid var(--paper-soft);border-bottom:1px solid var(--paper-soft);position:relative}
.val:nth-child(2n){border-right:none}
.val .vn{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--amber-deep)}
.val h3{font-family:var(--disp);font-weight:600;font-size:22px;margin:14px 0 12px;color:var(--paper-ink);line-height:1.25}
.val h3 .ko{font-family:var(--body);font-weight:700}
.val p{font-size:14.5px;color:var(--paper-mute);line-height:1.72}
.val p b{color:var(--paper-ink);font-weight:600}

/* ---------------- VISION / DARK PANEL ---------------- */
.vision{background:var(--ink-soft);border-top:1px solid var(--line)}
.vlist{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.vrow{background:var(--ink);padding:30px;display:flex;gap:20px;align-items:flex-start;transition:background .3s}
.vrow:hover{background:var(--ink-raised)}
.vrow .vi{font-family:var(--mono);font-weight:700;font-size:13px;color:var(--aqua);padding-top:3px;flex:none;width:36px}
.vrow h4{font-family:var(--body);font-weight:600;font-size:16.5px;color:var(--white)}
.vrow p{font-size:13.8px;color:var(--mist);margin-top:6px;line-height:1.65}

/* ---------------- INFO TABLE (business info) ---------------- */
.info-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--paper-soft);border-radius:16px;overflow:hidden}
.info-table tr{border-bottom:1px solid var(--paper-soft)}
.info-table tr:last-child{border-bottom:none}
.info-table th{text-align:left;width:34%;padding:18px 26px;font-family:var(--body);font-weight:600;font-size:14.5px;color:var(--paper-ink);background:var(--paper-soft);vertical-align:top}
.info-table td{padding:18px 26px;font-size:14.5px;color:var(--paper-mute);vertical-align:top}

/* ---------------- FAQ ACCORDION ---------------- */
.faq-cat{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin:48px 0 18px}
.faq-cat:first-of-type{margin-top:0}
.faq{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:12px;background:linear-gradient(180deg,var(--ink-soft),var(--ink))}
.faq summary{list-style:none;cursor:pointer;padding:22px 26px;display:flex;justify-content:space-between;align-items:center;gap:18px;font-weight:600;font-size:16px;color:var(--white);transition:color .2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--aqua)}
.faq summary .q{display:flex;gap:14px;align-items:baseline}
.faq summary .qn{font-family:var(--mono);font-size:13px;color:var(--amber);flex:none}
.faq summary .ic{flex:none;width:22px;height:22px;position:relative;transition:transform .3s}
.faq summary .ic::before,.faq summary .ic::after{content:"";position:absolute;background:var(--mist);border-radius:2px}
.faq summary .ic::before{top:10px;left:3px;right:3px;height:2px}
.faq summary .ic::after{left:10px;top:3px;bottom:3px;width:2px;transition:opacity .3s}
.faq[open] summary .ic::after{opacity:0}
.faq[open] summary{color:var(--aqua)}
.faq .a{padding:0 26px 24px 56px;color:var(--mist);font-size:14.5px;line-height:1.75}
.faq .a b{color:var(--white);font-weight:600}

/* ---------------- CONTACT ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.contact-info{display:grid;gap:14px}
.ci-card{background:linear-gradient(180deg,var(--ink-soft),var(--ink));border:1px solid var(--line);border-radius:16px;padding:24px 26px}
.ci-card .lab{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--aqua);margin-bottom:8px}
.ci-card .val2{font-size:16px;color:var(--white);font-weight:600;line-height:1.5}
.ci-card .sub{font-size:13.5px;color:var(--mist);margin-top:4px}
.form-card{background:#fff;border:1px solid var(--paper-soft);border-radius:20px;padding:34px 32px}
.form-card label{display:block;font-size:13px;font-weight:600;color:var(--paper-ink);margin:16px 0 7px}
.form-card label:first-child{margin-top:0}
.form-card input,.form-card textarea{width:100%;border:1px solid var(--paper-soft);border-radius:10px;padding:13px 15px;font-family:var(--body);font-size:15px;color:var(--paper-ink);background:var(--paper);transition:border-color .2s}
.form-card input:focus,.form-card textarea:focus{outline:none;border-color:var(--aqua-deep)}
.form-card textarea{resize:vertical;min-height:120px}
.form-card .btn{margin-top:22px;width:100%;text-align:center;cursor:pointer;border:none}
.map-embed{margin-top:18px;border:1px solid var(--line);border-radius:16px;overflow:hidden;height:300px}
.map-embed iframe{width:100%;height:100%;border:0;filter:grayscale(.2) contrast(1.05)}

/* ---------------- CTA STRIP ---------------- */
.cta{padding:108px 0 96px;text-align:center;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 50% 0,rgba(232,178,76,.10),transparent 60%)}
.cta .wrap{position:relative;z-index:2}
.cta h2{font-family:var(--disp);font-weight:600;font-size:clamp(28px,5vw,52px);line-height:1.1;letter-spacing:-.02em}
.cta h2 .ko{font-family:var(--body);font-weight:700}
.cta h2 .warm{color:var(--amber)}
.cta p{margin:22px auto 36px;max-width:46ch;color:var(--mist);font-size:16.5px}
.cta .btnrow{justify-content:center}

/* ---------------- FOOTER ---------------- */
footer{border-top:1px solid var(--line);padding:54px 0 56px;background:var(--ink)}
.foot{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.foot .fb{font-family:var(--disp);font-weight:700;font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--white)}
.foot .fb .dot{width:22px;height:22px}
.foot .fdesc{font-size:13.5px;color:var(--paper-mute);max-width:34ch;line-height:1.7}
.foot .fbiz{font-size:12px;color:var(--paper-mute);margin-top:14px;line-height:1.8;font-family:var(--mono)}
.foot .fcol h5{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist);margin-bottom:14px}
.foot .fcol a,.foot .fcol span{display:block;font-size:13.5px;color:var(--paper-mute);margin-bottom:9px;transition:color .2s}
.foot .fcol a:hover{color:var(--aqua)}
.foot-base{margin-top:46px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--paper-mute);font-family:var(--mono);letter-spacing:.04em}

/* ---------------- REVEAL ---------------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------------- RESPONSIVE ---------------- */
@media(max-width:860px){
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:rgba(11,17,32,.97);backdrop-filter:blur(14px);padding:22px 28px 30px;gap:18px;border-bottom:1px solid var(--line)}
  .nav-links.open a{font-size:16px;color:var(--white)}
  .nav-toggle{display:block}
  .pillars{grid-template-columns:1fr}
  .val-grid{grid-template-columns:1fr}
  .val{border-right:none}
  .vlist{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .tl-row{grid-template-columns:74px 1fr;gap:18px}
  .sec-pad{padding:76px 0}
  .info-table th{width:40%;padding:15px 16px}
  .info-table td{padding:15px 16px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
}