/* OpenDB Works — design system
   Colors: deep petrol (brand base) · emerald (primary action) · sky (signal) · amber (accent) · warm-slate neutrals
   (variable names kept generic for compatibility: --navy-* = petrol base, --blue-* = emerald primary) */
:root{
  --navy-950:#041416; --navy-900:#082629; --navy-800:#0e363a; --navy-700:#16494e;
  --blue-600:#0a7f63; --blue-500:#0fa37f; --blue-100:#d9f3ea; --blue-50:#eefaf5;
  --teal-500:#2f9fd0; --teal-100:#e0f1f9;
  --amber-500:#f0a530;
  --ink:#10201f; --body:#2d3a3a; --muted:#586868; --line:#dbe4e2; --line-soft:#edf3f1;
  --bg:#ffffff; --bg-alt:#f4f8f7;
  --radius:14px; --radius-sm:10px; --shadow:0 1px 2px rgba(16,32,31,.06),0 8px 24px rgba(16,32,31,.06);
  --shadow-lg:0 2px 6px rgba(16,32,31,.08),0 24px 48px rgba(16,32,31,.10);
  --max:1200px; --header-h:68px;
  --font:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Noto Sans KR","Noto Sans CJK KR",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-zh:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Pretendard Variable",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.7;color:var(--body);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;word-break:keep-all;overflow-wrap:anywhere}
html[lang="zh-Hans"] body{font-family:var(--font-zh);word-break:normal}
html[lang="en"] body{word-break:normal}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;letter-spacing:-.02em;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2rem,4.6vw,3.5rem);letter-spacing:-.03em}
h2{font-size:clamp(1.6rem,3vw,2.35rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
code{font-family:var(--mono);font-size:.88em;background:var(--line-soft);padding:.1em .4em;border-radius:6px}
:focus-visible{outline:3px solid var(--blue-500);outline-offset:3px;border-radius:4px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:var(--blue-600);color:#fff;padding:10px 16px;border-radius:8px;font-weight:600}
.skip-link:focus{top:12px;text-decoration:none}
.wrap{width:min(var(--max),calc(100% - 48px));margin-inline:auto}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:1.2rem;letter-spacing:-.03em;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand small{font-weight:600;color:var(--muted);font-size:.78rem;letter-spacing:0;margin-left:1px}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{color:var(--body);font-size:.95rem;font-weight:600;padding:8px 12px;border-radius:8px}
.nav-menu a:hover{background:var(--bg-alt);text-decoration:none;color:var(--ink)}
.nav-menu a[aria-current="page"]{color:var(--blue-600);background:var(--blue-50)}
.nav-menu a.nav-cta{background:var(--blue-600);color:#fff;margin-left:6px}
.nav-menu a.nav-cta:hover{background:var(--navy-800)}
.lang{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:10px;background:#fff}
.lang a{font-size:.8rem;font-weight:700;color:var(--muted);padding:4px 9px;border-radius:7px;line-height:1.4}
.lang a:hover{text-decoration:none;color:var(--ink);background:var(--bg-alt)}
.lang a[aria-current="true"]{background:var(--navy-900);color:#fff}
.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;cursor:pointer;color:var(--ink)}
.menu-toggle svg{margin:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:10px;font-weight:700;font-size:1rem;border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,color .15s;line-height:1.3}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--blue-500);color:#fff}
.btn-primary:hover{background:var(--blue-600)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-outline{border-color:var(--line);color:var(--ink);background:#fff}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600)}
.btn svg{flex:none}

/* hero */
.hero{position:relative;background:var(--navy-950);color:#d3e6e2;overflow:hidden;isolation:isolate}
.hero picture,.hero .hero-bg{position:absolute;inset:0;z-index:-2}
.hero .hero-bg img,.hero picture img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(100deg,rgba(4,20,22,.97) 0%,rgba(4,20,22,.88) 45%,rgba(4,20,22,.55) 100%)}
.hero-inner{padding:clamp(72px,11vw,136px) 0 clamp(56px,8vw,96px);max-width:820px}
.hero h1{color:#fff;margin:14px 0 20px}
.hero .lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:#c4dcd7;max-width:62ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero--sub .hero-inner{padding:clamp(56px,8vw,104px) 0 clamp(48px,6vw,80px)}
.hero--sub h1{font-size:clamp(1.9rem,4vw,3rem)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-600)}
.hero .eyebrow{color:#6fdcb9}
.eyebrow::before{content:"";width:18px;height:2px;background:currentColor;border-radius:2px}
.breadcrumb{font-size:.85rem;color:#9cbab5;margin-bottom:6px}
.breadcrumb a{color:#c4dcd7}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb li+li::before{content:"/";margin-right:6px;color:#6b8a86}

/* facts strip */
.facts{background:var(--navy-900);color:#c4dcd7;border-top:1px solid rgba(255,255,255,.08)}
.facts ul{list-style:none;display:grid;grid-template-columns:repeat(4,1fr)}
.facts li{padding:26px 22px;border-left:1px solid rgba(255,255,255,.08)}
.facts li:first-child{border-left:0;padding-left:0}
.facts b{display:block;color:#fff;font-size:1.45rem;letter-spacing:-.02em;line-height:1.2}
.facts span{font-size:.9rem}

/* sections */
.section{padding:clamp(64px,9vw,112px) 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--navy-900);color:#c4dcd7}
.section--dark h2,.section--dark h3{color:#fff}
.section--dark .eyebrow{color:#6fdcb9}
.section-head{max-width:760px;margin-bottom:44px}
.section-head p{color:var(--muted);font-size:1.08rem}
.section--dark .section-head p{color:#a7c3be}
.section-head.center{margin-inline:auto;text-align:center}
.section-head.center .eyebrow::before{display:none}

/* grids & cards */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.card h3{margin-top:14px}
.card p{color:var(--muted);font-size:.98rem}
.card .more{margin-top:auto;padding-top:10px;font-weight:700;display:inline-flex;gap:6px;align-items:center}
.card--feature{grid-column:span 2;background:linear-gradient(135deg,var(--navy-900),var(--navy-800));color:#c4dcd7;border-color:var(--navy-800)}
.card--feature h3{color:#fff;font-size:1.45rem}
.card--feature p{color:#b5cdc9}
.card--feature .more{color:#7fe3c4}
.card--feature .ic{background:rgba(15,163,127,.18);color:#7fe3c4}
.section--dark .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.1);box-shadow:none}
.section--dark .card p{color:#a7c3be}
.ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--blue-50);color:var(--blue-600);flex:none}
.ic--teal{background:var(--teal-100);color:#0e7f8e}
.ic--amber{background:#fdf1de;color:#a76a10}
.section--dark .ic{background:rgba(15,163,127,.18);color:#7fe3c4}
.tag{display:inline-block;font-size:.74rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--blue-600);background:var(--blue-50);padding:3px 9px;border-radius:999px}
.card--feature .tag{background:rgba(255,255,255,.1);color:#c9f2e4}
.checks{list-style:none;margin:6px 0 14px;display:grid;gap:8px}
.checks li{position:relative;padding-left:28px;font-size:.96rem;color:var(--body)}
.card--feature .checks li,.section--dark .checks li{color:#d2e6e2}
.checks li::before{content:"";position:absolute;left:0;top:.42em;width:18px;height:18px;border-radius:50%;background:var(--blue-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%231f56e8'%3E%3Cpath d='M8.1 13.3 4.8 10l-1.1 1.1 4.4 4.4 8.5-8.5-1.1-1.1z'/%3E%3C/svg%3E") center/14px no-repeat}
.checks.two{grid-template-columns:1fr 1fr;column-gap:24px}

/* split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.split .muted{color:var(--muted)}

/* process */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.steps li{position:relative;padding:28px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.steps li::before{counter-increment:s;content:"0" counter(s);font-weight:800;font-size:.85rem;color:var(--blue-600);letter-spacing:.08em;display:block;margin-bottom:10px}
.steps h3{font-size:1.12rem}
.steps p{color:var(--muted);font-size:.95rem;margin:0}
.section--dark .steps li{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.1)}
.section--dark .steps p{color:#a7c3be}

/* chips / stack */
.stack{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stack-group{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.stack-group h3{font-size:.86rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none}
.chips li,.chip{font-size:.86rem;font-weight:600;color:var(--ink);background:var(--bg-alt);border:1px solid var(--line);padding:5px 11px;border-radius:999px;line-height:1.4}
.section--dark .chips li{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);color:#e0efec}

/* tables */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:.94rem;min-width:640px}
caption{caption-side:top;text-align:left;padding:16px 20px 0;font-weight:700;color:var(--ink)}
th,td{padding:13px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line-soft)}
thead th{background:var(--bg-alt);color:var(--ink);font-weight:700;font-size:.86rem;border-bottom:1px solid var(--line)}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
tbody th{color:var(--ink);font-weight:700}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.note{font-size:.88rem;color:var(--muted);margin-top:14px}
.callout{border-left:4px solid var(--blue-500);background:var(--blue-50);padding:18px 22px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--body);font-size:.97rem}
.callout--warn{border-color:var(--amber-500);background:#fff8ec}
.callout strong{color:var(--ink)}

/* tiers */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.tier h3{font-size:1.3rem;margin:8px 0 4px}
.tier .sub{color:var(--muted);font-size:.95rem;margin-bottom:16px}
.tier--hl{border:2px solid var(--blue-500);box-shadow:var(--shadow-lg)}
.tier .checks{margin-top:auto}

/* diagram */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.flow-col{border-radius:var(--radius);padding:20px;border:1px solid var(--line);background:#fff}
.flow-col h3{font-size:1.02rem;display:flex;gap:10px;align-items:center}
.flow-col ol{list-style:none;display:grid;gap:8px;margin-top:12px}
.flow-col li{font-size:.9rem;background:var(--bg-alt);border:1px solid var(--line-soft);border-radius:8px;padding:8px 12px;position:relative}
.flow-col li+li::before{content:"";position:absolute;left:50%;top:-9px;width:2px;height:8px;background:var(--line)}
.flow-col.nids{border-top:4px solid var(--blue-500)}
.flow-col.hids{border-top:4px solid var(--teal-500)}
.flow-col.mal{border-top:4px solid var(--amber-500)}
.flow-base{margin-top:16px;padding:14px 18px;border:1px dashed var(--line);border-radius:var(--radius-sm);font-size:.9rem;color:var(--muted);background:#fff}
figure{margin:0}
figcaption{font-size:.86rem;color:var(--muted);margin-top:10px}
.figure-frame{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px}
details.fig summary{cursor:pointer;font-weight:700;color:var(--blue-600);margin-top:22px}

/* faq */
.faq{display:grid;gap:12px;max-width:900px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:4px 22px}
.faq summary{cursor:pointer;font-weight:700;color:var(--ink);padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--blue-600)}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--muted);padding-bottom:12px}

/* CTA */
.cta{background:linear-gradient(120deg,var(--navy-900),var(--navy-700));color:#c4dcd7;border-radius:22px;padding:clamp(36px,5vw,64px);display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}
.cta h2{color:#fff}
.cta p{color:#b5cdc9;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* company / contact */
.info{display:grid;grid-template-columns:160px 1fr;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;margin:0}
.info dt,.info dd{margin:0;padding:14px 20px;border-bottom:1px solid var(--line-soft)}
.info dt{background:var(--bg-alt);font-weight:700;color:var(--ink);font-size:.92rem}
.info dd{font-size:.97rem}
.info dt:last-of-type,.info dd:last-of-type{border-bottom:0}
.placeholder{display:inline-block;background:#fff4d6;color:#7a5200;border:1px dashed #d9a520;border-radius:6px;padding:0 8px;font-size:.9em;font-weight:600}
.form{display:grid;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:block;font-weight:700;font-size:.9rem;color:var(--ink);margin-bottom:6px}
.form input,.form select,.form textarea{width:100%;font:inherit;font-size:.97rem;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.form textarea{min-height:150px;resize:vertical}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(15,163,127,.18)}
.form .hint{font-size:.85rem;color:var(--muted);margin:0}
.req{color:#c4473a}

/* footer */
.site-footer{background:var(--navy-950);color:#9cbab5;font-size:.93rem;padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px}
.site-footer .brand{color:#fff}
.site-footer h2{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:#6f9690;margin-bottom:14px}
.site-footer ul{list-style:none;display:grid;gap:8px}
.site-footer a{color:#c4dcd7}
.site-footer address{font-style:normal;line-height:1.8}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);font-size:.85rem;color:#6f9690}

/* utilities */
.section--tight-top{padding-top:0}
.steps.s3{grid-template-columns:repeat(3,1fr)}
.mt-0{margin-top:0}.mt-24{margin-top:24px}.mt-40{margin-top:40px}.mt-56{margin-top:56px}
.center{text-align:center}
.kbd-list{font-family:var(--mono);font-size:.85rem}
.lead-muted{color:var(--muted);font-size:1.05rem}

/* responsive */
@media (max-width:1080px){
  .g4,.steps{grid-template-columns:repeat(2,1fr)}
  .stack{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1400px){
  .menu-toggle{display:grid;place-items:center}
  .nav{gap:12px}
  .nav-menu{position:absolute;left:0;right:0;top:var(--header-h);flex-direction:column;align-items:stretch;gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:12px 24px 20px;box-shadow:var(--shadow-lg);display:none}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:12px}
  .nav-menu a.nav-cta{margin:8px 0 0;text-align:center}
  .lang{order:2}
  .menu-toggle{order:3;margin-left:0}
  .brand{margin-right:auto}
}
@media (max-width:960px){
  .g3,.tiers,.flow{grid-template-columns:1fr}
  .g2,.split,.cta{grid-template-columns:1fr}
  .card--feature{grid-column:auto}
  .cta-actions{justify-content:flex-start}
  .facts ul{grid-template-columns:1fr 1fr}
  .facts li:nth-child(3){border-left:0;padding-left:0}
  .facts li{padding-left:22px}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{width:calc(100% - 36px)}
  .g4,.steps,.stack,.foot-grid{grid-template-columns:1fr}
  .checks.two{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  .info{grid-template-columns:1fr}
  .info dt{border-bottom:0;padding-bottom:4px}
  .info dd{padding-top:4px}
  .facts li{padding:18px 12px 18px 0;border-left:0}
  .facts b{font-size:1.2rem}
  .card{padding:22px}
}
@media (max-width:370px){.brand small{display:none}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
@media print{.site-header,.site-footer,.hero picture,.cta-actions,.menu-toggle{display:none}.hero{background:#fff;color:#000}.hero h1{color:#000}}
.section.cta-sec{padding-top:clamp(24px,4vw,56px)}


/* ---------- OpenDB Works components ---------- */
.wordmark{font-weight:800;letter-spacing:-.03em;color:inherit}
.wordmark span{color:var(--blue-500)}
.wordmark em{font-style:normal;font-weight:600;color:var(--muted);margin-left:.18em}
.site-footer .wordmark span{color:#6fdcb9}.site-footer .wordmark em{color:#9cbab5}
/* hero without photography: layered gradients + data grid */
.hero{background:radial-gradient(1200px 520px at 85% -10%,rgba(15,163,127,.30),transparent 60%),radial-gradient(800px 420px at -10% 110%,rgba(47,159,208,.18),transparent 60%),linear-gradient(160deg,#041416 0%,#082629 60%,#0b3034 100%)}
.hero::after{background:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px) 0 0/32px 32px,linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px) 0 0/32px 32px;mask-image:linear-gradient(90deg,transparent,#000 60%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 60%)}
.hero-grid{display:grid;grid-template-columns:1.25fr .95fr;gap:48px;align-items:center}
.hero-grid .hero-inner{max-width:none}
.hero-visual{border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(255,255,255,.04);padding:22px;box-shadow:0 30px 60px rgba(0,0,0,.25)}
.hv-title{font:600 .78rem/1 var(--mono);letter-spacing:.06em;color:#6fdcb9;text-transform:uppercase;margin:0 0 14px;display:flex;align-items:center;gap:8px}
.hv-title::before{content:"";width:8px;height:8px;border-radius:50%;background:#2fd39f;box-shadow:0 0 0 4px rgba(47,211,159,.18)}
.hv-dbs{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.hv-db{display:flex;gap:12px;align-items:center;padding:12px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);color:#e0efec;text-decoration:none}
.hv-db:hover{text-decoration:none;border-color:rgba(111,220,185,.6);background:rgba(15,163,127,.12)}
.hv-db svg{flex:none;color:#6fdcb9}.hv-db b{display:block;color:#fff;font-size:.98rem}.hv-db small{display:block;color:#9cbab5;font-size:.78rem;line-height:1.35}
.hv-bar{margin-top:14px;display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.hv-bar span{font:600 .7rem/1.2 var(--mono);color:#c4dcd7;text-align:center;padding:8px 2px;border-radius:8px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08)}
/* db label chips on cards */
.dbmark{display:inline-flex;align-items:center;gap:8px;font:700 .8rem/1 var(--mono);letter-spacing:.02em;color:var(--blue-600)}
/* topology diagram (pure HTML/CSS) */
.topo-fig{margin:0}
.topo{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,#fff,var(--bg-alt));padding:20px;display:grid;gap:8px}
.topo-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.topo-node{flex:1 1 140px;max-width:260px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;text-align:center;box-shadow:var(--shadow)}
.topo-node b{display:block;color:var(--ink);font-size:.92rem;line-height:1.3}
.topo-node span{display:block;color:var(--muted);font-size:.78rem;line-height:1.35;margin-top:2px}
.topo-node.pri{border-color:var(--blue-500);background:var(--blue-50)}.topo-node.pri b{color:var(--blue-600)}
.topo-node.rep{border-style:dashed}
.topo-node.ops{border-color:#bfe0ee;background:var(--teal-100)}
.topo-node.app{background:var(--navy-900);border-color:var(--navy-900)}.topo-node.app b{color:#fff}.topo-node.app span{color:#a7c3be}
.topo-arrow{text-align:center;color:var(--muted);font-size:.78rem;line-height:1.2}
.topo-arrow::before{content:"↓";display:block;font-size:1.05rem;color:var(--blue-500)}
.topo-side{margin-top:6px;border-top:1px dashed var(--line);padding-top:12px;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.topo-side span{font-size:.78rem;font-weight:600;color:var(--navy-700);background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 11px}
figure figcaption{font-size:.85rem;color:var(--muted);margin-top:10px}
/* code blocks */
.code{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid #163c40;background:#06191b}
.code figcaption{margin:0;padding:10px 16px;font:600 .78rem/1.3 var(--mono);color:#9cbab5;border-bottom:1px solid #163c40;background:#0a2326}
.code pre{margin:0;padding:16px 18px;overflow:auto;font:400 .84rem/1.65 var(--mono);color:#d8ece8;white-space:pre}
.code pre code{background:none;padding:0;font-size:inherit;color:inherit}
.codes{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
/* matrix table helper */
.yes{color:var(--blue-600);font-weight:700}
.section-head.center{margin-inline:auto;text-align:center}
@media (max-width:1080px){.hero-grid{grid-template-columns:1fr}.hero-visual{max-width:640px}}
@media (max-width:960px){.codes{grid-template-columns:1fr}}
@media (max-width:640px){.hv-dbs{grid-template-columns:1fr}.hv-bar{grid-template-columns:repeat(3,1fr)}.topo{padding:14px}.topo-node{flex-basis:100%;max-width:none}}
@media print{.hero-visual{display:none}}
.stack{grid-template-columns:repeat(4,1fr)}
@media (max-width:1080px){.stack{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.stack{grid-template-columns:1fr}}
@media (max-width:400px){.nav{gap:8px}.lang a{padding:4px 6px}.brand{font-size:1.08rem;gap:8px}}
/* ---------- 회원·문의 게시판 (member/) ---------- */
.nav-menu a.nav-member{color:var(--muted);font-weight:600}
.m-hero .hero-inner{padding:clamp(40px,6vw,72px) 0 clamp(32px,5vw,56px)}
.m-hero h1{font-size:clamp(1.7rem,3.4vw,2.5rem);word-break:break-word}
.wrap.narrow{max-width:820px}.wrap.narrow--sm{max-width:520px}
.m-form{gap:18px}
.m-form .m-h2{font-size:1.25rem;margin:0}
.m-field{display:flex;flex-direction:column;gap:6px}
.m-field label{font-weight:700;color:var(--ink);font-size:.95rem}
.m-field small,.m-small{color:var(--muted);font-size:.85rem}
.m-field input,.m-field select,.m-field textarea,.m-search input,.m-search select,.m-inline select{font:inherit;font-size:1rem;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%;min-height:44px}
.m-field textarea{resize:vertical;line-height:1.6}
.m-field input:focus,.m-field textarea:focus,.m-field select:focus,.m-search input:focus{outline:3px solid rgba(15,163,127,.28);border-color:var(--blue-500)}
.m-field input[readonly]{background:var(--bg-alt);color:var(--muted)}
.m-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.req{color:#b42318}
.m-check{display:flex;gap:10px;align-items:flex-start;font-size:.95rem;cursor:pointer}
.m-check input{width:20px;height:20px;margin-top:2px;flex:none;accent-color:var(--blue-600)}
.m-check--inline{align-items:center;white-space:nowrap}
.m-check--inline input{margin:0}
.m-consent{border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:flex;flex-direction:column;gap:12px;margin:0}
.m-consent legend{font-weight:800;padding:0 6px;color:var(--ink)}
.m-privacy{max-height:240px;overflow:auto;background:var(--bg-alt);border-radius:10px;padding:14px 16px;font-size:.88rem}
.m-privacy h2,.m-doc h2{font-size:1rem;margin:14px 0 6px}.m-privacy h2:first-child{margin-top:0}
.m-privacy table,.m-doc table{width:100%;border-collapse:collapse;font-size:.88rem;margin:8px 0}
.m-privacy th,.m-privacy td,.m-doc th,.m-doc td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.m-privacy thead th,.m-doc thead th{background:#fff}
.m-doc{gap:4px}.m-doc p{color:var(--body)}
.m-submit{width:100%}
.m-alt{text-align:center;color:var(--muted);font-size:.93rem;margin:0}
.m-alert{border-radius:12px;padding:14px 18px;margin-bottom:20px;font-weight:600;border:1px solid}
.m-alert ul{margin:0;padding-left:18px}
.m-alert--ok{background:#e9f8f2;border-color:#9fdcc6;color:#05553f}
.m-alert--err{background:#fdeeee;border-color:#f3b8b4;color:#8a1c14}
.m-stack{display:flex;flex-direction:column;gap:28px}
.m-danger{border-color:#f3b8b4}
.m-btn-danger{background:#b42318;color:#fff}.m-btn-danger:hover{background:#8a1c14}
.btn-sm{padding:7px 12px;font-size:.88rem}
.m-toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:12px}
.m-search{display:flex;flex-wrap:wrap;gap:10px;align-items:center;flex:1;min-width:0}
.m-search input[type=search]{flex:1;min-width:180px;max-width:360px}
.m-search select{width:auto}
.m-count{color:var(--muted);font-size:.9rem;margin:0 0 8px}
.m-table{width:100%;border-collapse:collapse;background:#fff;font-size:.95rem}
.m-table th,.m-table td{padding:13px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.m-table thead th{background:var(--bg-alt);font-size:.85rem;color:var(--muted);white-space:nowrap}
.m-table .m-num,.m-table .m-date{white-space:nowrap;color:var(--muted)}
.m-table .m-title{min-width:220px}
.m-table .m-title a{font-weight:700;color:var(--ink)}
.m-empty{text-align:center;color:var(--muted);padding:40px 12px!important}
.m-muted{color:var(--muted)}
.m-status{display:inline-block;font-size:.8rem;font-weight:800;padding:4px 10px;border-radius:999px;white-space:nowrap}
.m-status--received{background:#eef2f6;color:#3d4b5c}
.m-status--in_progress{background:#fff4dc;color:#7a4b00}
.m-status--answered{background:#e3f6ef;color:#05553f}
.m-pager{display:flex;gap:6px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.m-pager a,.m-pager span{min-width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;font-weight:700}
.m-pager span{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}
.m-post{gap:16px}
.m-badge{margin:0;font-weight:800;color:#7a4b00}
.m-meta{display:flex;flex-wrap:wrap;gap:8px 28px;margin:0;padding-bottom:14px;border-bottom:1px solid var(--line);font-size:.9rem}
.m-meta div{display:flex;gap:8px}.m-meta dt{color:var(--muted)}.m-meta dd{margin:0;font-weight:600;color:var(--ink)}
.m-body{line-height:1.8;color:var(--body);overflow-wrap:anywhere}
.m-answer{margin-top:24px;border-left:4px solid var(--blue-500)}
.m-wait{margin:24px 0 0}
.m-adminbox{margin-top:24px;background:#fbfdfc;border-style:dashed}
.m-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.m-form .m-actions{margin-top:0}
.m-inline{display:inline-flex;gap:6px;align-items:center;margin:0}
.m-inline select{width:auto;min-height:36px;padding:6px 10px;font-size:.9rem}
.m-tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:20px}
.m-tabs a{padding:10px 16px;font-weight:700;color:var(--muted);border-bottom:3px solid transparent;margin-bottom:-1px}
.m-tabs a[aria-current="page"]{color:var(--blue-600);border-color:var(--blue-600)}

@media (max-width:640px){.m-row{grid-template-columns:1fr}.m-table .m-hide-sm{display:none}.m-toolbar>.btn{width:100%}.m-search input[type=search]{max-width:none}}
.m-consent{min-width:0}
.m-privacy table,.m-doc table{min-width:0;table-layout:fixed}
.m-privacy th[scope=row],.m-doc th[scope=row]{width:28%}
.m-privacy td,.m-doc td{overflow-wrap:anywhere}
.table-wrap{position:relative}
.site-header .wrap{width:min(1360px,calc(100% - 48px))}
.nav-menu a{white-space:nowrap}
.m-actions--tight{margin-top:0}
.m-acct-top{margin:0 0 20px;align-items:center}
.m-acct-top .m-muted{margin-right:auto}

/* ---- 메뉴 그룹(드롭다운) — Cloud MSP / 오픈소스 DB ---- */
.nav-group{position:relative}
.nav-gbtn{display:inline-flex;align-items:center;gap:4px;background:none;border:0;font:inherit;color:var(--body);font-size:.95rem;font-weight:600;padding:8px 12px;border-radius:8px;cursor:pointer;white-space:nowrap}
.nav-gbtn:hover,.nav-group.open>.nav-gbtn{background:var(--bg-alt);color:var(--ink)}
.nav-gbtn[data-active]{color:var(--blue-600);background:var(--blue-50)}
.nav-gbtn svg{transition:transform .15s}
.nav-group.open>.nav-gbtn svg{transform:rotate(180deg)}
.nav-sub{display:none;position:absolute;top:calc(100% + 6px);left:0;min-width:230px;flex-direction:column;gap:2px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:8px;z-index:60}
.nav-sub::before{content:"";position:absolute;left:0;right:0;top:-8px;height:8px}
.nav-group.open>.nav-sub{display:flex}
@media (hover:hover) and (min-width:1401px){.nav-group:hover>.nav-sub{display:flex}}
.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr 1.3fr}
@media (max-width:1400px){
  .nav-menu{max-height:calc(100vh - var(--header-h));overflow-y:auto}
  .nav-gbtn{width:100%;justify-content:space-between;padding:12px}
  .nav-sub{position:static;box-shadow:none;border:0;border-left:2px solid var(--line);border-radius:0;margin:0 0 6px 12px;padding:0 0 0 8px;min-width:0}
  .nav-sub::before{display:none}
}
@media (max-width:1100px){.foot-grid{grid-template-columns:1fr 1fr}}