/* DT Nexus Cloud — public landing page. Light-weight: no JS animation. */
html { scroll-behavior: smooth; }
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 900px) { .wrap { padding: 0 40px; } }
.skip { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 10px; font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }
.tag { font-family: var(--font-mono); font-size: 9.5px; font-weight: 500; letter-spacing: 0.22em; color: var(--text-3); border: 1px solid var(--line); border-radius: 5px; padding: 3px 5px 2px 6px; line-height: 1; vertical-align: middle; }

/* nav */
.nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 20px; height: 62px; }
.brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; }
.brand-mark { width: 26px; height: auto; color: var(--text); }
.brand .wordmark { font-size: 18px; }
.nav-links { display: none; gap: 4px; margin-left: 20px; }
.nav-links a { padding: 8px 12px; border-radius: 8px; text-decoration: none; font-size: 14px; font-weight: 500; color: var(--text-2); }
.nav-links a:hover { background: var(--surface-2); color: var(--text); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; color: var(--text-2); }
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn .i-sun { display: none; }
:root[data-theme="dark"] .icon-btn .i-sun { display: block; }
:root[data-theme="dark"] .icon-btn .i-moon { display: none; }
@media (min-width: 900px) { .nav-links { display: flex; } }
@media (max-width: 380px) { .brand .tag { display: none; } }

/* hero — always the brand's night surface */
.hero { position: relative; overflow: hidden; isolation: isolate; background: var(--night); color: var(--night-text); }
.night-grid {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(228, 31, 40, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(228, 31, 40, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 85%); mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 85%);
}
.night-glow { position: absolute; z-index: -1; width: 560px; height: 560px; top: -240px; left: -200px; background: radial-gradient(circle, rgba(228, 31, 40, 0.4), transparent 65%); filter: blur(10px); pointer-events: none; }
.hero-in { display: grid; gap: 40px; padding-top: 48px; padding-bottom: 56px; }
.hero .eyebrow { color: var(--night-muted); }
.hero h1 { font-family: var(--font-display); font-weight: 600; font-size: 34px; line-height: 1.08; letter-spacing: -0.02em; margin-top: 14px; color: #fff; }
.lede { margin-top: 18px; font-size: 16.5px; line-height: 1.6; color: #c3c8d0; max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.hero-cta .btn { flex: 1 1 auto; }
.btn-ghost-night { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.2); }
.btn-ghost-night:hover { background: rgba(255, 255, 255, 0.06); }
.hero-note { margin-top: 14px; font-size: 13px; color: var(--night-muted); }
@media (min-width: 600px) { .hero-cta .btn { flex: 0 0 auto; } }
@media (min-width: 960px) {
  .hero-in { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); align-items: center; padding-top: 88px; padding-bottom: 96px; gap: 56px; }
  .hero h1 { font-size: 54px; }
  .lede { font-size: 18px; }
}

/* phone illustration */
.hero-demo { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.hero-demo figcaption { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: #5f6672; }
.phone {
  width: 100%; max-width: 330px; padding: 16px 14px 18px; border-radius: 34px;
  background: #f4f5f7; color: #0e0e0e; border: 8px solid #1b2030; box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.06);
  display: flex; flex-direction: column; gap: 10px; font-size: 12.5px;
}
.ph-top { display: flex; justify-content: space-between; align-items: center; padding: 2px 4px 4px; }
.ph-top .wordmark { font-size: 13px; color: #0e0e0e; }
.ph-live { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.16em; color: #5b586e; display: inline-flex; align-items: center; gap: 6px; }
.ph-live i, .ph-s i, .ph-pill i { width: 7px; height: 7px; border-radius: 50%; background: #12a150; display: inline-block; }
.ph-card { position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr auto; row-gap: 2px; padding: 14px; border-radius: 16px; background: #070a13; color: #fff; }
.ph-card::before { content: ""; position: absolute; width: 200px; height: 200px; top: -110px; left: -80px; background: radial-gradient(circle, rgba(228, 31, 40, 0.45), transparent 65%); }
.ph-k { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.18em; color: #969da6; grid-column: 1; position: relative; }
.ph-v { font-family: var(--font-display); font-weight: 600; font-size: 28px; color: #2bd97c; grid-column: 1; letter-spacing: -0.02em; position: relative; }
.ph-s { font-size: 11.5px; color: #c3c8d0; display: inline-flex; align-items: center; gap: 6px; grid-column: 1; }
.ph-s i { background: #2bd97c; }
.ph-stop { grid-column: 2; grid-row: 1 / 4; align-self: center; display: inline-flex; align-items: center; gap: 6px; padding: 9px 12px; border-radius: 10px; background: #e41f28; font-weight: 600; font-size: 12px; }
.ph-stop b { width: 9px; height: 9px; border-radius: 2px; background: #fff; }
.ph-bot { background: #fff; border: 1px solid #dde1ec; border-radius: 14px; padding: 11px 12px; display: flex; flex-direction: column; gap: 8px; }
.ph-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.ph-row b { font-size: 13px; }
.ph-pos { color: #0f8a47; font-weight: 700; font-family: var(--font-display); font-size: 14px; }
.ph-pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border-radius: 99px; background: rgba(18, 161, 80, 0.1); color: #0f8a47; font-weight: 600; font-size: 11px; white-space: nowrap; }
.ph-pill.amber { background: rgba(245, 158, 11, 0.14); color: #a15c00; }
.ph-pill.amber i { background: #f59e0b; }
.ph-mut { color: #7d7a90; font-size: 11px; text-align: right; }
.ph-bar { height: 6px; border-radius: 6px; background: #eceef3; overflow: hidden; }
.ph-bar i { display: block; width: 62%; height: 100%; background: #12a150; border-radius: inherit; }

/* band */
.band { border-bottom: 1px solid var(--line); background: var(--surface); }
.band-in { display: grid; gap: 1px; padding-top: 0; padding-bottom: 0; }
.band-in > div { padding: 20px 0; display: flex; flex-direction: column; gap: 4px; }
.band-in > div + div { border-top: 1px solid var(--line); }
.band b { font-size: 15px; }
.band span { color: var(--text-3); font-size: 14px; }
@media (min-width: 760px) {
  .band-in { grid-template-columns: repeat(3, 1fr); }
  .band-in > div { padding: 26px 24px 26px 0; }
  .band-in > div + div { border-top: 0; border-left: 1px solid var(--line); padding-left: 24px; }
}

/* sections */
.sec { padding: 64px 0; }
.sec-alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec h2, .cta-end h2 { font-family: var(--font-display); font-weight: 600; font-size: 27px; line-height: 1.15; letter-spacing: -0.015em; margin-top: 10px; max-width: 640px; }
.sec-lede { margin-top: 12px; color: var(--text-2); max-width: 600px; font-size: 16px; }
@media (min-width: 960px) { .sec { padding: 96px 0; } .sec h2, .cta-end h2 { font-size: 38px; } }

.steps { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 12px; }
.steps li { padding: 20px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); }
.steps .n { font-family: var(--font-mono); font-size: 12px; color: var(--brand); letter-spacing: 0.1em; }
.steps h3 { font-size: 17px; margin-top: 10px; }
.steps p { margin-top: 6px; color: var(--text-2); font-size: 14.5px; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .steps { grid-template-columns: repeat(4, 1fr); } }

.cards { display: grid; gap: 14px; margin-top: 32px; }
@media (min-width: 900px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card-l { padding: 22px; border-radius: var(--r-lg); background: var(--bg); border: 1px solid var(--line); }
.card-l h3 { font-family: var(--font-display); font-weight: 600; font-size: 19px; }
.card-l > p { margin-top: 8px; color: var(--text-2); font-size: 14.5px; }
.card-l ul { margin: 16px 0 0; padding: 14px 0 0; border-top: 1px solid var(--line); list-style: none; display: flex; flex-direction: column; gap: 9px; }
.card-l li { position: relative; padding-left: 18px; font-size: 14px; color: var(--text-2); }
.card-l li::before { content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; border-radius: 2px; background: var(--brand); }
.fine { margin-top: 18px; font-size: 14px; color: var(--text-3); }

.two { display: grid; gap: 28px; }
@media (min-width: 900px) { .two { grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; } }
.checks-l { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.checks-l li { display: flex; flex-direction: column; gap: 4px; padding: 18px 0; border-top: 1px solid var(--line); }
.checks-l li:first-child { border-top: 0; padding-top: 0; }
.checks-l b { font-size: 17px; }
.checks-l span { color: var(--text-2); font-size: 15px; }

.sec-night { position: relative; overflow: hidden; isolation: isolate; background: var(--night); color: var(--night-text); }
.sec-night .eyebrow { color: var(--night-muted); }
.sec-night h2 { color: #fff; }
.safety { display: grid; gap: 1px; margin-top: 32px; background: var(--night-line); border: 1px solid var(--night-line); border-radius: var(--r-lg); overflow: hidden; }
.safety > div { background: rgba(7, 10, 19, 0.92); padding: 22px; }
.safety h3 { font-size: 16px; color: #fff; }
.safety p { margin-top: 8px; color: #aab0bb; font-size: 14.5px; line-height: 1.6; }
@media (min-width: 760px) { .safety { grid-template-columns: repeat(2, 1fr); } }

.faq-wrap { display: grid; gap: 28px; }
@media (min-width: 900px) { .faq-wrap { grid-template-columns: 0.8fr 1.2fr; gap: 56px; } }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 18px 36px 18px 0; position: relative; font-weight: 600; font-size: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-family: var(--font-mono); font-size: 20px; color: var(--brand); }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 0 18px; color: var(--text-2); font-size: 15px; line-height: 1.6; }

.cta-end { padding: 64px 0 72px; text-align: center; background: var(--surface); border-top: 1px solid var(--line); }
.cta-end h2 { margin: 0 auto 24px; }
.cta-end p { margin-top: 14px; color: var(--text-3); font-size: 14px; }
.cta-end p a { color: var(--text); font-weight: 600; }

.foot { padding: 32px 0 calc(32px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.foot-in { display: grid; gap: 14px; }
.foot .wordmark { font-size: 15px; }
.foot nav { display: flex; gap: 18px; }
.foot nav a { color: var(--text-2); font-size: 14px; text-decoration: none; }
.foot nav a:hover { color: var(--brand); }
.risk { font-size: 12.5px; color: var(--text-3); line-height: 1.6; max-width: 820px; }
@media (min-width: 760px) { .foot-in { grid-template-columns: auto 1fr; align-items: center; } .foot nav { justify-content: flex-end; } .risk { grid-column: 1 / -1; } }