/* SumarXsys — situs platform. Konsep tata letak: kolom tunggal 1120px, hero dua kolom (teks | percakapan WhatsApp), bagian bergantian polos/berbingkai. */
:root {
  --ink: #0f2233;          /* biru tinta: teks utama */
  --ink-2: #3c5163;        /* teks sekunder */
  --muted: #6b7f8f;
  --bg: #f4f7f9;           /* udara dingin: latar */
  --surface: #ffffff;
  --line: #d9e3ea;
  --accent: #0b8f84;       /* teal freon: aksi utama */
  --accent-ink: #ffffff;
  --accent-soft: #dcf2ef;
  --frost: #e8f1f7;        /* panel es */
  --chat-bg: #e9e2d6;      /* latar chat WhatsApp */
  --bubble-in: #ffffff;
  --bubble-out: #d9fdd3;
  --warn: #b45309;
  --font-display: 'Bricolage Grotesque', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e6eef4; --ink-2: #b4c4d0; --muted: #8aa0b0; --bg: #0c1720; --surface: #12222e; --line: #23384a;
    --accent: #2cc4b3; --accent-ink: #062521; --accent-soft: #10342f; --frost: #142a38;
    --chat-bg: #0b141a; --bubble-in: #1f2c34; --bubble-out: #005c4b; --warn: #f0a24a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ink: #e6eef4; --ink-2: #b4c4d0; --muted: #8aa0b0; --bg: #0c1720; --surface: #12222e; --line: #23384a;
  --accent: #2cc4b3; --accent-ink: #062521; --accent-soft: #10342f; --frost: #142a38;
  --chat-bg: #0b141a; --bubble-in: #1f2c34; --bubble-out: #005c4b; --warn: #f0a24a; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 var(--font-body); -webkit-text-size-adjust: 100%; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
img { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; text-wrap: balance; margin: 0; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0; }
.eyebrow { font: 600 .74rem/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.lead { font-size: 1.12rem; color: var(--ink-2); max-width: 60ch; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 18px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 800 1.15rem/1 var(--font-display); }
.mark { width: 32px; height: 32px; border-radius: 9px; background: var(--ink); color: var(--bg); display: grid; place-items: center; font: 800 .82rem/1 var(--font-mono); letter-spacing: -.04em; }
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: .92rem; padding: 8px 10px; border-radius: 8px; }
.nav a:hover { color: var(--ink); background: var(--frost); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 700 .95rem/1 var(--font-body); text-decoration: none; border-radius: 999px; padding: 13px 20px; border: 1.5px solid transparent; cursor: pointer; }
.btn.pri { background: var(--accent); color: var(--accent-ink); }
.btn.pri:hover { filter: brightness(1.06); }
.btn.line { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn.line:hover { border-color: var(--ink-2); }
.btn.sm { padding: 9px 14px; font-size: .88rem; }
@media (max-width: 860px) { .nav { display: none; } .top .btn { margin-left: auto; } }

/* hero */
.hero { padding-block: 56px 64px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 48px; align-items: center; }
.hero-copy { display: grid; gap: 22px; min-width: 0; align-content: start; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-note { font-size: .9rem; color: var(--muted); }
.trade { display: flex; flex-wrap: wrap; gap: 8px; }
.trade span { font: 600 .8rem/1 var(--font-body); color: var(--ink-2); background: var(--frost); border-radius: 999px; padding: 8px 12px; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 36px; } .hero { padding-block: 36px 48px; } }

/* percakapan WhatsApp */
.phone { background: var(--surface); border: 1px solid var(--line); border-radius: 28px; padding: 10px; box-shadow: 0 30px 60px -36px rgba(15, 34, 51, .45); max-width: 420px; justify-self: center; width: 100%; }
.phone-head { display: flex; align-items: center; gap: 10px; padding: 8px 10px 12px; }
.phone-head .av { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font: 800 .75rem/1 var(--font-mono); }
.phone-head b { display: block; font-size: .95rem; }
.phone-head small { color: var(--muted); font-size: .76rem; }
.chat { background: var(--chat-bg); border-radius: 20px; padding: 14px 12px; display: grid; gap: 8px; font-size: .86rem; line-height: 1.45; }
.msg { max-width: 86%; padding: 8px 10px 6px; border-radius: 10px; white-space: pre-line; overflow-wrap: anywhere; box-shadow: 0 1px 0 rgba(0, 0, 0, .06); }
.msg.in { background: var(--bubble-in); justify-self: start; border-top-left-radius: 3px; }
.msg.out { background: var(--bubble-out); justify-self: end; border-top-right-radius: 3px; }
.msg time { display: block; text-align: right; font-size: .66rem; color: var(--muted); margin-top: 2px; }
.msg b { font-weight: 700; }

/* bagian */
.sec { padding-block: 72px; scroll-margin-top: 64px; }
.sec.alt { background: var(--surface); border-block: 1px solid var(--line); }
.sec-head { display: grid; gap: 12px; margin-bottom: 36px; max-width: 70ch; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 860px) { .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); } .sec { padding-block: 52px; } }

/* fitur */
.feat-col h3 { font-size: 1.3rem; margin-bottom: 6px; }
.feat-col > p { color: var(--ink-2); margin-bottom: 18px; }
.feat-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.feat-list li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 10px; }
.feat-list li::before { content: ''; width: 10px; height: 10px; margin-top: 8px; border-radius: 3px; background: var(--accent); }
.feat-list b { display: block; }
.feat-list span { color: var(--ink-2); font-size: .95rem; }

/* kalkulator BTU */
.calc { margin-top: 40px; background: var(--frost); border-radius: var(--radius); padding: 24px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: center; }
.calc h3 { margin-bottom: 6px; }
.calc p { color: var(--ink-2); font-size: .95rem; }
.calc-form { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.calc-form label { display: grid; gap: 4px; font: 600 .74rem/1.2 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.calc-form input, .calc-form select { font: 600 1rem/1 var(--font-mono); padding: 10px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--surface); color: var(--ink); width: 100%; min-width: 0; }
.calc-out { grid-column: 1 / -1; background: var(--surface); border-radius: 12px; padding: 14px 16px; border: 1px solid var(--line); }
.calc-out .f { font: .82rem/1.5 var(--font-mono); color: var(--muted); }
.calc-out .r { font: 800 1.5rem/1.2 var(--font-display); margin-top: 4px; }
@media (max-width: 860px) { .calc { grid-template-columns: minmax(0, 1fr); } }

/* alur pesanan */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; counter-reset: s; }
.flow li { counter-increment: s; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; display: grid; gap: 6px; align-content: start; }
.flow li::before { content: counter(s, decimal-leading-zero); font: 600 .78rem/1 var(--font-mono); color: var(--st, var(--accent)); }
.flow b { font-family: var(--font-display); font-size: 1.02rem; }
.flow span { color: var(--ink-2); font-size: .9rem; }
.flow .chip { justify-self: start; font: 700 .68rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--st); background: color-mix(in srgb, var(--st) 14%, transparent); border-radius: 999px; padding: 5px 8px; }
@media (max-width: 960px) { .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .flow { grid-template-columns: minmax(0, 1fr); } }

/* data milik toko */
.trust { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 40px; align-items: start; }
.trust-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.trust-list div { display: grid; grid-template-columns: minmax(0, 13ch) minmax(0, 1fr); gap: 16px; padding-block: 16px; border-bottom: 1px solid var(--line); }
.trust-list dt { font-weight: 700; }
.trust-list dd { margin: 0; color: var(--ink-2); }
@media (max-width: 860px) { .trust { grid-template-columns: minmax(0, 1fr); } .trust-list div { grid-template-columns: minmax(0, 1fr); gap: 4px; } }

/* paket */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 24px; display: grid; gap: 14px; align-content: start; }
.plan.feature { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.plan .tag { font: 600 .72rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.plan h3 { font-size: 1.5rem; }
.plan .price { font: 700 1rem/1.3 var(--font-body); color: var(--ink-2); padding-block: 10px; border-block: 1px dashed var(--line); }
.plan ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: .95rem; }
.plan li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 8px; }
.plan li > span { min-width: 0; }
.plan li::before { content: '✓'; color: var(--accent); font-weight: 800; }
.plan li.soon::before { content: '◷'; color: var(--warn); }
.plan li.soon em { font-style: normal; font-size: .78rem; font-weight: 700; color: var(--warn); margin-left: 4px; }
.plan-note { margin-top: 22px; display: grid; gap: 6px; color: var(--ink-2); font-size: .95rem; }
@media (max-width: 960px) { .plans { grid-template-columns: minmax(0, 1fr); } }

/* FAQ */
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; }
.faq summary { cursor: pointer; font-weight: 700; padding-block: 16px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font: 700 1.2rem/1 var(--font-mono); color: var(--accent); }
.faq details[open] summary::after { content: '−'; }
.faq details p { padding-bottom: 16px; color: var(--ink-2); }

/* kontak */
.contact { background: var(--ink); color: var(--bg); border-radius: 22px; padding: 36px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 28px; align-items: center; }
.contact h2 { color: var(--bg); }
.contact p { color: color-mix(in srgb, var(--bg) 78%, var(--ink)); margin-top: 10px; }
.contact-list { display: grid; gap: 12px; }
.contact-row { background: color-mix(in srgb, var(--bg) 8%, var(--ink)); border-radius: 12px; padding: 14px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.contact-row small { display: block; font: 600 .7rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: color-mix(in srgb, var(--bg) 60%, var(--ink)); margin-bottom: 6px; }
.contact-row .v { font: 700 1.05rem/1.2 var(--font-mono); color: var(--bg); overflow-wrap: anywhere; }
.contact-row .btn { padding: 8px 14px; font-size: .85rem; }
.contact .btn.pri { background: var(--accent); color: var(--accent-ink); }
.copy { background: transparent; color: var(--bg); border: 1.5px solid color-mix(in srgb, var(--bg) 35%, var(--ink)); }
@media (max-width: 860px) { .contact { grid-template-columns: minmax(0, 1fr); padding: 26px 20px; } }

/* footer */
.foot { padding-block: 32px 48px; color: var(--muted); font-size: .9rem; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
.foot nav { display: flex; gap: 18px; flex-wrap: wrap; }
.foot a { color: var(--ink-2); }

/* halaman dokumen (Syarat Layanan / Kebijakan Privasi) */
.doc { padding-block: 48px 72px; }
.doc .wrap { max-width: 780px; }
.doc-head { display: grid; gap: 10px; margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.doc-head .meta { font: .85rem/1.5 var(--font-mono); color: var(--muted); }
.doc h2 { font-size: 1.3rem; margin: 36px 0 10px; }
.doc p, .doc li { color: var(--ink-2); }
.doc p + p { margin-top: 10px; }
.doc ul, .doc ol { padding-left: 22px; display: grid; gap: 6px; margin: 10px 0 0; }
.doc .box { background: var(--frost); border-radius: 12px; padding: 16px 18px; margin-top: 14px; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.toc a { font-size: .85rem; text-decoration: none; background: var(--frost); color: var(--ink-2); padding: 6px 10px; border-radius: 999px; }