:root {
  --bg: #111111; --panel: #181818; --line: #2a2a2a; --text: #f2f2f2; --muted: #a9a9a9;
  --gold: #e4c06a; --max: 1120px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font: 16px/1.6 'Poppins', Arial, sans-serif; }
b, strong { font-weight: 600; }
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow { color: var(--gold); font-size: 12px; letter-spacing: .28em; text-transform: uppercase; font-weight: 500; }
h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.12; font-weight: 600; letter-spacing: -.01em; }
h2 { font-size: clamp(25px, 3.3vw, 34px); line-height: 1.25; font-weight: 600; margin: 10px 0 14px; }
h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
p.lead { color: var(--muted); font-size: 18px; max-width: 680px; }
section { padding: 80px 0; border-top: 1px solid var(--line); }
section.first { border-top: 0; padding-top: 64px; }
.btn { display: inline-block; padding: 13px 22px; border-radius: 6px; font-weight: 500; text-decoration: none; }
.btn.gold { background: var(--gold); color: #111; }
.btn.ghost { border: 1px solid #444; }
.btn:hover { filter: brightness(1.08); }
.more { color: var(--gold); text-decoration: none; font-weight: 500; font-size: 15px; display: inline-block; margin-top: 18px; }
.more:hover { text-decoration: underline; }

/* header */
header { position: sticky; top: 0; z-index: 10; background: rgba(17,17,17,.94); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; gap: .94em; font: 600 16px/1 'Poppins', Arial, sans-serif; letter-spacing: 0; color: #fff; text-decoration: none; white-space: nowrap; }
.logo svg { width: 1.3em; height: auto; fill: currentColor; flex: none; }
nav { display: flex; gap: 26px; font-size: 14px; color: var(--muted); }
nav a { text-decoration: none; }
nav a:hover, nav a.on { color: var(--text); }
nav a.on { border-bottom: 1px solid var(--gold); padding-bottom: 2px; }
header .btn { padding: 9px 16px; font-size: 14px; }

/* hero */
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero h1 span { color: var(--gold); }
.hero p.lead { margin: 20px 0 30px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 40px; }
.facts b { display: block; font-size: 19px; line-height: 1.3; margin-bottom: 4px; white-space: nowrap; }
.facts span { color: var(--muted); font-size: 13px; }
.page-head p.lead { margin-top: 14px; }

/* grids and cards */
.grid2, .grid3, .grid4 { display: grid; gap: 20px; margin-top: 36px; }
.grid2 { grid-template-columns: repeat(2, 1fr); }
.grid3 { grid-template-columns: repeat(3, 1fr); }
.grid4 { grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 26px; display: flex; flex-direction: column; }
.card .price { margin-top: auto; padding-top: 16px; }
.card .more { margin-top: auto; padding-top: 14px; align-self: flex-start; }
.card .tag { color: var(--gold); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 8px; }
.card .sub { font-size: 15px; color: var(--text); margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.card p { color: var(--muted); font-size: 15px; }
.card ul { list-style: none; margin-top: 12px; color: var(--muted); font-size: 15px; }
.card li { padding: 7px 0 7px 22px; border-top: 1px solid var(--line); position: relative; }
.card li:first-child { border-top: 0; }
.card li::before { content: ""; position: absolute; left: 0; top: 17px; width: 10px; height: 2px; background: var(--gold); }
.price { margin-top: 16px; font-size: 22px; font-weight: 600; }
.price small { display: block; font-size: 12px; color: var(--muted); font-weight: 400; letter-spacing: .04em; }
.spec { margin-top: 14px; font-size: 14px; color: var(--muted); }
.spec div { display: grid; grid-template-columns: 70px 1fr; gap: 8px; padding: 6px 0; border-top: 1px solid var(--line); }
.spec b { color: var(--text); font-weight: 500; }
.note { color: var(--muted); font-size: 14px; margin-top: 18px; max-width: 820px; }

/* principles */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 40px; margin-top: 36px; }
.principle { padding: 22px 0; border-top: 1px solid var(--line); }
.principle h3 { font-size: 17px; }
.principle p { color: var(--muted); font-size: 15px; }

/* validation */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; margin-top: 36px; }
.tests { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.test { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }
.test b { display: block; font-size: 15px; }
.test span { color: var(--muted); font-size: 13px; }
.photos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.photos img { width: 100%; border-radius: 8px; object-fit: cover; }
.deliver { margin-top: 28px; }
.deliver li { list-style: none; padding: 10px 0 10px 26px; border-top: 1px solid var(--line); position: relative; color: var(--muted); }
.deliver li b { color: var(--text); font-weight: 500; }
.deliver li::before { content: ""; position: absolute; left: 0; top: 18px; width: 12px; height: 2px; background: var(--gold); }
.sample { border-radius: 10px; border: 1px solid var(--line); }
.caption { color: var(--muted); font-size: 13px; margin-top: 10px; }

/* tables */
table.plain { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 15px; }
table.plain th, table.plain td { text-align: left; padding: 10px 12px; border-top: 1px solid var(--line); }
table.plain th { color: var(--muted); font-weight: 500; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; }
table.plain td:last-child { color: var(--gold); white-space: nowrap; }

/* process */
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-top: 36px; counter-reset: s; }
.step { border-top: 2px solid var(--gold); padding-top: 14px; }
.step::before { counter-increment: s; content: "0" counter(s); color: var(--gold); font-size: 13px; letter-spacing: .1em; }
.step h3 { font-size: 16px; margin-top: 6px; }
.step p { color: var(--muted); font-size: 14px; }

/* timeline / case */
.timeline { margin-top: 28px; }
.timeline div { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); }
.timeline b { color: var(--gold); font-weight: 500; font-size: 14px; }
.timeline span { color: var(--muted); }

/* contact band */
.contact { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.channels a { display: flex; justify-content: space-between; gap: 12px; padding: 16px 0; border-top: 1px solid var(--line); text-decoration: none; }
.channels a:last-child { border-bottom: 1px solid var(--line); }
.channels span { color: var(--muted); }
.channels b { font-weight: 500; overflow-wrap: anywhere; text-align: right; }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 13px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer nav { display: flex; gap: 18px; }

/* floating WhatsApp */
.wa { position: fixed; right: 20px; bottom: 20px; z-index: 20; width: 56px; height: 56px; border-radius: 50%;
      background: #25d366; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 20px #0008; }
.wa:hover { filter: brightness(1.05); }

@media (max-width: 960px) {
  .grid4 { grid-template-columns: repeat(2, 1fr); }
  .principles, .grid3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  header nav { display: none; }
  .hero .wrap, .split, .contact { grid-template-columns: 1fr; }
  .grid2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  section { padding: 60px 0; }
}
@media (max-width: 560px) {
  .grid4, .grid3, .principles { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .logo { font-size: 13px; }
  .tests { grid-template-columns: 1fr; }
  .timeline div { grid-template-columns: 1fr; gap: 2px; }
}

/* image previewer */
main img:not(.no-zoom) { cursor: zoom-in; }
.lightbox { position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,.92); display: none; align-items: center; justify-content: center; padding: 24px; cursor: zoom-out; }
.lightbox.open { display: flex; }
.lightbox img { width: auto; height: auto; max-width: 100%; max-height: 100%; border-radius: 6px; }
.lightbox button { position: absolute; top: 12px; right: 16px; background: none; border: 0; color: #fff; font-size: 36px; line-height: 1; cursor: pointer; }
.photos.three { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 560px) { .photos.three { grid-template-columns: 1fr; } }
p.lead + p.lead { margin-top: 14px; }

/* language switch */
.head-end { display: flex; align-items: center; gap: 14px; }
.lang { font-size: 13px; font-weight: 500; letter-spacing: .08em; color: var(--muted); text-decoration: none; border: 1px solid var(--line); border-radius: 6px; padding: 6px 9px; line-height: 1; }
.lang:hover { color: var(--text); border-color: #444; }
nav a, .btn, .lang { white-space: nowrap; }
/* compact menu: the full nav hides where it no longer fits, and the menu button opens it as a panel */
.menu { display: none; width: 40px; height: 36px; padding: 9px 9px; background: none; border: 1px solid var(--line); border-radius: 6px; cursor: pointer; flex-direction: column; justify-content: space-between; }
.menu span { display: block; height: 2px; background: var(--text); border-radius: 1px; }
@media (max-width: 1080px) { header nav { display: none; } .menu { display: flex; } }
@media (max-width: 1160px) { html[lang="id"] header nav { display: none; } html[lang="id"] .menu { display: flex; } }
header.open nav { display: flex !important; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
  background: #111; border-bottom: 1px solid var(--line); padding: 8px max(24px, env(safe-area-inset-left, 0px)) 16px; font-size: 16px; }
header.open nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
header.open nav a:last-child { border-bottom: 0; }
header.open nav a.on { border-bottom: 1px solid var(--line); padding-bottom: 12px; color: var(--gold); }
@media (max-width: 560px) { .facts { grid-template-columns: 1fr; gap: 16px; } }

/* services, a la carte */
.svc-group { margin-top: 36px; }
.svc-group h3 { font-size: 15px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; }
.svc { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.facts a, .step a { color: inherit; text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 4px; }
.facts a:hover, .step a:hover { color: var(--gold); }
section[id] { scroll-margin-top: 68px; }
@media (max-width: 560px) { header .btn { display: none; } .head-end { gap: 10px; } }

/* manufacturer product images */
.prod { background: #f5f4f0; border-radius: 8px; padding: 10px; margin-bottom: 18px; }
.prod img { width: 100%; height: 170px; object-fit: contain; mix-blend-mode: multiply; }
.gear { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; align-items: end; margin-top: 32px; }
.gear figure { margin: 0; text-align: center; }
.gear img { width: 100%; height: 120px; object-fit: contain; }
@media (max-width: 760px) { .gear { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.gear figcaption { color: var(--muted); font-size: 13px; margin-top: 10px; }

/* example builds table */
.table-wrap { overflow-x: auto; margin-top: 28px; }
table.builds { width: 100%; min-width: 620px; border-collapse: collapse; font-size: 15px; }
table.builds th, table.builds td { text-align: left; padding: 11px 14px; border-top: 1px solid var(--line); vertical-align: top; }
table.builds tr:first-child th { color: var(--gold); font-size: 12px; font-weight: 500; letter-spacing: .18em; text-transform: uppercase; border-top: 0; }
table.builds tr th:first-child { color: var(--muted); font-weight: 400; width: 110px; }
table.builds tr.total td { font-size: 20px; font-weight: 600; padding-top: 16px; }

/* Collapsible example builds under the tier cards */
details.builds-toggle { margin-top: 28px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); scroll-margin-top: 68px; }
details.builds-toggle summary { list-style: none; cursor: pointer; padding: 16px 20px; font-weight: 500; display: flex; align-items: center; gap: 12px; }
details.builds-toggle summary::-webkit-details-marker { display: none; }
details.builds-toggle summary::before { content: ""; width: 8px; height: 8px; border-right: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(-45deg); transition: transform .2s; flex: none; }
details.builds-toggle[open] summary::before { transform: rotate(45deg); }
details.builds-toggle summary:hover { color: var(--gold); }
details.builds-toggle > :not(summary) { margin-left: 20px; margin-right: 20px; }
details.builds-toggle > .lead { margin-top: 0; font-size: 15px; }
details.builds-toggle > .table-wrap { margin-top: 16px; }
details.builds-toggle > .note:last-child { margin-bottom: 20px; }
.price a { color: inherit; text-decoration: underline dotted var(--gold); text-decoration-thickness: 2px; text-underline-offset: 6px; }
.price a:hover { color: var(--gold); }