/* UnlimiCompute — modern dark theme inspired by leading AI infra brands */
:root {
  --bg: #050608;
  --bg-2: #0a0c12;
  --bg-3: #10131c;
  --panel: rgba(255,255,255,0.04);
  --panel-2: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.10);
  --border-2: rgba(255,255,255,0.16);
  --fg: #f3f5f9;
  --fg-dim: #aab1c0;
  --fg-muted: #6f7787;
  --accent: #7df9c4;        /* compute-green */
  --accent-2: #6ad7ff;      /* sky */
  --accent-3: #b794ff;      /* violet */
  --warn: #ffb547;
  --grad: linear-gradient(135deg, #7df9c4 0%, #6ad7ff 45%, #b794ff 100%);
  --grad-soft: linear-gradient(135deg, rgba(125,249,196,0.10), rgba(183,148,255,0.10));
  --shadow: 0 30px 80px rgba(0,0,0,0.45);
  --radius: 16px;
  --max: 1240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body {
  font-family: "Inter", "Noto Sans TC", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-feature-settings: "ss01", "cv11";
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }

/* ---------- background ambience ---------- */
.bg-fx {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(900px 600px at 75% -10%, rgba(125,249,196,0.10), transparent 60%),
    radial-gradient(700px 500px at -5% 30%, rgba(106,215,255,0.08), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(183,148,255,0.10), transparent 60%),
    var(--bg);
}
.bg-fx::before {
  content: ""; position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 35%, transparent 75%);
}

/* ---------- layout ---------- */
.container { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
section { padding: 110px 0; position: relative; }
section .eyebrow { color: var(--accent); font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 600; margin-bottom: 14px; }
section .h2 {
  font-size: clamp(30px, 4vw, 48px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; margin: 0 0 14px;
}
section .sub { color: var(--fg-dim); max-width: 760px; font-size: 17px; }

/* ---------- header ---------- */
header.site {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  background: rgba(5,6,8,0.65);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 600; letter-spacing: -0.01em; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--grad); position: relative; box-shadow: 0 0 24px rgba(125,249,196,0.35);
}
.brand-mark::after {
  content: ""; position: absolute; inset: 6px; border-radius: 4px;
  background: var(--bg); mix-blend-mode: multiply;
}
.brand-name { font-size: 16px; }
.brand-sub { font-size: 11px; color: var(--fg-muted); letter-spacing: 0.14em; text-transform: uppercase; }
.nav-links { display: flex; gap: 22px; margin-left: 28px; }
.nav-links a { color: var(--fg-dim); font-size: 14px; transition: color .2s; }
.nav-links a:hover { color: var(--fg); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }

.lang-switch { display: inline-flex; padding: 4px; gap: 2px; background: var(--panel); border: 1px solid var(--border); border-radius: 999px; }
.lang-switch button {
  background: transparent; color: var(--fg-dim); border: 0; padding: 6px 10px; border-radius: 999px;
  font-size: 12px; letter-spacing: 0.06em;
}
.lang-switch button.active { background: var(--panel-2); color: var(--fg); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px; border: 1px solid var(--border-2);
  background: var(--panel); color: var(--fg); font-size: 14px; font-weight: 500;
  transition: transform .15s, background .15s, border-color .15s;
}
.btn:hover { background: var(--panel-2); border-color: rgba(255,255,255,0.28); }
.btn.primary {
  background: var(--grad); color: #06120c; border-color: transparent; font-weight: 600;
  box-shadow: 0 10px 30px rgba(125,249,196,0.18);
}
.btn.primary:hover { transform: translateY(-1px); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(2px); }

/* ---------- hero ---------- */
.hero { padding: 96px 0 80px; }
.hero .eyebrow { color: var(--accent); font-size: 13px; letter-spacing: 0.22em; text-transform: uppercase; }
.hero h1 {
  font-size: clamp(40px, 6vw, 76px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.02;
  margin: 18px 0 22px;
}
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.sub { color: var(--fg-dim); font-size: 19px; max-width: 720px; }
.hero .cta { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero .stats {
  margin-top: 72px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  border-top: 1px solid var(--border); padding-top: 32px;
}
.hero .stats .stat .num {
  font-size: clamp(28px, 3vw, 40px); font-weight: 600; letter-spacing: -0.02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .stats .stat .lbl { color: var(--fg-muted); font-size: 13px; margin-top: 4px; }

/* ---------- services ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 48px; }
.svc-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; position: relative; overflow: hidden;
  transition: border-color .2s, transform .2s, background .2s;
}
.svc-card::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  background: var(--grad-soft); opacity: 0; transition: opacity .2s;
}
.svc-card > * { position: relative; }
.svc-card:hover { border-color: var(--border-2); transform: translateY(-2px); }
.svc-card:hover::before { opacity: 1; }
.svc-icon {
  width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: var(--panel-2); border: 1px solid var(--border-2); margin-bottom: 18px;
  color: var(--accent);
}
.svc-card h3 { font-size: 22px; margin: 0 0 8px; letter-spacing: -0.01em; font-weight: 600; }
.svc-card p { color: var(--fg-dim); margin: 0 0 16px; font-size: 15px; }
.svc-card ul { list-style: none; padding: 0; margin: 0; color: var(--fg-dim); font-size: 14px; }
.svc-card ul li { padding: 6px 0; border-top: 1px dashed rgba(255,255,255,0.06); }
.svc-card ul li::before { content: "→ "; color: var(--accent); }

/* ---------- hardware table ---------- */
.hw-wrap {
  margin-top: 40px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--panel);
}
table.hw { width: 100%; border-collapse: collapse; font-size: 14px; }
table.hw th, table.hw td { text-align: left; padding: 16px 20px; border-bottom: 1px solid var(--border); }
table.hw thead th { background: rgba(255,255,255,0.03); color: var(--fg-muted); font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; font-size: 12px; }
table.hw tbody tr:last-child td { border-bottom: 0; }
table.hw td.acc { color: var(--fg); font-weight: 600; }
.pill { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border-2); color: var(--fg-dim); background: rgba(255,255,255,0.04); }
.pill.ok { color: #93f6c1; border-color: rgba(125,249,196,0.4); background: rgba(125,249,196,0.08); }
.pill.warn { color: #ffd89a; border-color: rgba(255,181,71,0.4); background: rgba(255,181,71,0.08); }
.pill.cool { color: #b3e2ff; border-color: rgba(106,215,255,0.4); background: rgba(106,215,255,0.08); }

/* ---------- cloud pricing tiers ---------- */
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 48px; }
.tier {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px;
  display: flex; flex-direction: column; position: relative;
}
.tier h4 { margin: 0 0 6px; font-size: 18px; color: var(--fg); font-weight: 600; }
.tier p { color: var(--fg-dim); font-size: 14px; min-height: 60px; }
.tier .price { font-size: clamp(22px, 2.2vw, 28px); font-weight: 600; margin: 16px 0 22px; letter-spacing: -0.01em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tier .btn { margin-top: auto; justify-content: center; }
.tier.featured { border-color: rgba(125,249,196,0.5); box-shadow: 0 0 0 1px rgba(125,249,196,0.3), 0 20px 60px rgba(125,249,196,0.10); }
.tier .badge {
  position: absolute; top: -10px; right: 20px; padding: 4px 10px; border-radius: 999px;
  background: var(--grad); color: #06120c; font-size: 12px; font-weight: 600;
}

/* ---------- DC features ---------- */
.dc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 48px; }
.dc { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.dc h4 { margin: 12px 0 6px; font-size: 17px; }
.dc p { color: var(--fg-dim); font-size: 14px; }
.dc .ico { width: 36px; height: 36px; border-radius: 10px; background: var(--panel-2); border: 1px solid var(--border-2); display: grid; place-items: center; color: var(--accent-2); }

.dc-refs { margin-top: 80px; padding-top: 56px; border-top: 1px solid var(--border); }
.dc-refs-title { font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; letter-spacing: -0.015em; margin: 0 0 10px; }
.dc-refs-sub { color: var(--fg-dim); max-width: 760px; font-size: 15px; margin: 0; }
.dc-refs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 32px; }
.dc-ref {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px;
  display: flex; flex-direction: column; gap: 8px; transition: border-color .2s, transform .2s;
}
.dc-ref:hover { border-color: var(--border-2); transform: translateY(-2px); }
.dc-ref .name { font-size: 15px; font-weight: 600; color: var(--fg); }
.dc-ref .meta { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-2); }
.dc-ref .body { font-size: 13px; color: var(--fg-dim); line-height: 1.55; margin: 4px 0 0; }
@media (max-width: 1080px) { .dc-refs-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 720px) { .dc-refs-grid { grid-template-columns: 1fr; } }

/* ---------- solutions ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 48px; }
.sol {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 22px; transition: transform .2s, border-color .2s;
}
.sol:hover { transform: translateY(-2px); border-color: var(--border-2); }
.sol .num { font-size: 12px; color: var(--accent); letter-spacing: 0.18em; font-weight: 600; }
.sol h5 { margin: 8px 0 6px; font-size: 16px; }
.sol p { color: var(--fg-dim); font-size: 13px; margin: 0; }

/* ---------- industries marquee ---------- */
.ind { padding: 60px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(255,255,255,0.015); }
.ind h6 { color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.2em; font-size: 12px; margin: 0 0 22px; text-align: center; font-weight: 500; }
.ind ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 28px 40px; color: var(--fg-dim); }
.ind li { font-size: 15px; }

/* ---------- consultation form ---------- */
.consult-wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; margin-top: 48px; align-items: start; }
.consult-side {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px;
  position: sticky; top: 84px;
}
.consult-side h4 { margin: 0 0 8px; font-size: 18px; }
.consult-side p { color: var(--fg-dim); font-size: 14px; margin: 0 0 18px; }
.consult-side .meta { display: grid; gap: 8px; font-size: 14px; color: var(--fg-dim); }
.consult-side .meta b { color: var(--fg); font-weight: 500; }

form.consult { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; display: grid; gap: 14px; }
form.consult .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
form.consult label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--fg-dim); }
form.consult input, form.consult select, form.consult textarea {
  background: var(--bg-2); border: 1px solid var(--border); color: var(--fg);
  border-radius: 10px; padding: 11px 12px; font: inherit; font-size: 14px;
  transition: border-color .15s, background .15s;
}
form.consult input:focus, form.consult select:focus, form.consult textarea:focus {
  outline: none; border-color: var(--accent); background: var(--bg-3);
}
form.consult textarea { min-height: 120px; resize: vertical; }
form.consult .actions { display: flex; gap: 12px; align-items: center; margin-top: 6px; }
form.consult .status { font-size: 13px; }
form.consult .status.ok { color: var(--accent); }
form.consult .status.err { color: var(--warn); }

/* ---------- about ---------- */
.about-body { color: var(--fg-dim); font-size: 17px; line-height: 1.8; margin-top: 28px; max-width: 860px; }
.about-body p { margin: 0 0 20px; }
.about-body p:last-child { margin-bottom: 0; }
.about-body p:first-child { font-size: 18px; color: var(--fg); }

/* ---------- footer ---------- */
footer.site { border-top: 1px solid var(--border); padding: 56px 0 36px; background: var(--bg-2); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
footer h6 { color: var(--fg-muted); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; margin: 0 0 12px; font-weight: 500; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer ul li { padding: 4px 0; color: var(--fg-dim); font-size: 14px; }
footer ul li a:hover { color: var(--fg); }
footer .copy { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--fg-muted); font-size: 12px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- chat widget ---------- */
.chat-fab {
  position: fixed; bottom: 22px; right: 22px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--grad); color: #06120c; border: 0;
  box-shadow: 0 18px 40px rgba(125,249,196,0.35);
  display: grid; place-items: center; transition: transform .2s;
}
.chat-fab:hover { transform: scale(1.06); }
.chat-panel {
  position: fixed; bottom: 92px; right: 22px; width: 380px; max-width: calc(100vw - 32px);
  max-height: 72vh; z-index: 59; display: none;
  background: var(--bg-2); border: 1px solid var(--border-2); border-radius: 18px;
  box-shadow: var(--shadow); overflow: hidden;
  flex-direction: column;
}
.chat-panel.open { display: flex; }
.chat-head { padding: 16px 18px; background: var(--panel); border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.chat-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.chat-head .title { font-size: 14px; font-weight: 600; }
.chat-head .sub { font-size: 12px; color: var(--fg-muted); }
.chat-head .close { margin-left: auto; background: transparent; border: 0; color: var(--fg-muted); font-size: 18px; }
.chat-body { padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; flex: 1; font-size: 14px; }
.chat-msg { max-width: 86%; padding: 10px 12px; border-radius: 12px; line-height: 1.5; }
.chat-msg.user { align-self: flex-end; background: var(--grad); color: #06120c; border-bottom-right-radius: 4px; }
.chat-msg.bot { align-self: flex-start; background: var(--panel-2); color: var(--fg); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.chat-input { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); background: var(--bg-3); }
.chat-input input { flex: 1; background: var(--bg-2); border: 1px solid var(--border); color: var(--fg); border-radius: 10px; padding: 10px 12px; font: inherit; font-size: 14px; }
.chat-input input:focus { outline: none; border-color: var(--accent); }
.chat-input button { background: var(--grad); color: #06120c; border: 0; border-radius: 10px; padding: 0 14px; font-weight: 600; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .svc-grid { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr; }
  .dc-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: repeat(2, 1fr); }
  .consult-wrap { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  section { padding: 80px 0; }
  .nav-links { display: none; }
  .nav { gap: 12px; }
  .container { padding: 0 18px; }
  form.consult .row { grid-template-columns: 1fr; }
  .about-facts dl { grid-template-columns: 100px 1fr; }
  .dc-grid, .sol-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  table.hw th, table.hw td { padding: 12px 14px; font-size: 13px; }
}