/* Home page only. Builds on site.css tokens. */

/* hero */
.hero { padding: 56px 0 72px; }
.hero-in { display: grid; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.1; letter-spacing: -.025em; font-weight: 700; max-width: 14ch; }
.hero .lead { margin-top: 20px; font-size: 18px; }
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; margin-top: 32px; }
.wallets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 40px; }
.wallet {
  display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px 0 8px;
  border: 1px solid var(--border); border-radius: 999px; font: 500 13.5px/1 var(--f-body); color: var(--muted);
}
.wallet img { width: 22px; height: 22px; border-radius: 6px; }
.hero-demo { position: relative; }
.addr {
  display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px; margin-bottom: 10px;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface);
  font: 400 12.5px/1 var(--f-mono); color: var(--muted); overflow: hidden; white-space: nowrap;
}
.addr .ico-sm { color: var(--faint); }
.hero-demo .co { pointer-events: none; user-select: none; }
@media (min-width: 980px) {
  .hero { padding: 88px 0 112px; }
  .hero-in { grid-template-columns: minmax(0, 1fr) 520px; gap: 64px; }
}

/* how it works: a numbered rail, each step paired with the real artefact it produces */
.how-head { margin-bottom: 56px; }
.steps { position: relative; display: grid; gap: 48px; }
.step { display: grid; gap: 20px; position: relative; padding-left: 56px; }
.step::before {
  content: ""; position: absolute; left: 17px; top: 40px; bottom: -48px; width: 1px; background: var(--border);
}
.step:last-child::before { display: none; }
.step-n {
  position: absolute; left: 0; top: 0; width: 35px; height: 35px; border-radius: 50%;
  display: grid; place-items: center; background: var(--surface); border: 1px solid var(--border-strong);
  font: 600 14px/1 var(--f-mono);
}
.step h3 { font-size: 22px; line-height: 1.3; }
.step p { color: var(--muted); margin-top: 8px; max-width: 460px; }
.step-art { min-width: 0; }
.step-art > .sms, .step-art > .pill-url, .step-art > .mini-form, .step-art > .code { width: 100%; max-width: 520px; }
.step-art > .pill-url { display: flex; }
@media (min-width: 900px) {
  .step { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 48px; align-items: start; }
}

.sms {
  max-width: 420px; border: 1px solid var(--border); border-radius: var(--r-card); background: var(--surface); overflow: hidden;
}
.sms-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 13.5px; }
.sms-head b { font-weight: 600; }
.sms-head span { margin-left: auto; color: var(--faint); font: 400 12px/1 var(--f-mono); }
.sms-body { padding: 14px 16px; font: 400 13.5px/1.7 var(--f-mono); color: var(--muted); }
.sms-body mark { background: none; color: var(--text); font-weight: 600; }
.pill-url {
  display: inline-flex; align-items: center; gap: 10px; max-width: 100%;
  border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; background: var(--surface);
  font: 400 13.5px/1.4 var(--f-mono); color: var(--muted); overflow: hidden;
}
.pill-url b { color: var(--text); font-weight: 500; }
.mini-form { max-width: 420px; display: grid; gap: 10px; }
.mini-form .input { height: 46px; font-size: 15px; pointer-events: none; }

/* rules: a real table, the result column carries state colour on the icon only */
.rules { margin-top: 48px; border: 1px solid var(--border); border-radius: var(--r-card); overflow: hidden; background: var(--surface); }
.rule { display: grid; gap: 6px; padding: 18px 20px; }
.rule + .rule { border-top: 1px solid var(--border); }
.rule-if { font-weight: 500; }
.rule-then { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); }
.rule-then .ico { margin-top: 3px; }
.rule-then b { color: var(--text); font-weight: 600; }
.st-ok { color: var(--success); }
.st-bad { color: var(--danger); }
.st-wait { color: var(--muted); }
.rules-hd { display: none; }
@media (min-width: 820px) {
  .rule, .rules-hd { grid-template-columns: 340px minmax(0, 1fr); gap: 24px; align-items: center; padding: 18px 24px; }
  .rules-hd { display: grid; background: var(--bg-soft); font: 500 13px/1 var(--f-body); color: var(--muted); border-bottom: 1px solid var(--border); padding-top: 14px; padding-bottom: 14px; }
}

/* security: sticky heading on the left, list on the right */
.sec { display: grid; gap: 40px; }
.sec-list { display: grid; }
.sec-item { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 16px; padding: 24px 0; border-top: 1px solid var(--border); }
.sec-item:last-child { border-bottom: 1px solid var(--border); }
.sec-ico { width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border); display: grid; place-items: center; color: var(--text); background: var(--surface); }
.sec-item h3 { font: 600 17px/1.4 var(--f-body); }
.sec-item p { color: var(--muted); margin-top: 4px; font-size: 15px; }
@media (min-width: 900px) {
  .sec { grid-template-columns: 360px minmax(0, 1fr); gap: 72px; align-items: start; }
  .sec-side { position: sticky; top: 108px; }
}

/* integrate: tabs + code */
.int { display: grid; gap: 40px; margin-top: 48px; }
.int-tabs { display: flex; gap: 6px; padding: 4px; background: var(--surface-2); border-radius: 12px; width: max-content; max-width: 100%; overflow-x: auto; }
.int-tab {
  height: 40px; padding: 0 16px; border: 0; border-radius: 9px; background: transparent; color: var(--muted);
  font: 600 14.5px/1 var(--f-body); cursor: pointer; white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.int-tab:hover { color: var(--text); }
.int-tab[aria-selected="true"] { background: var(--accent); color: var(--on-accent); }
.int-pane { display: grid; gap: 28px; }
.int-pane[hidden] { display: none; }
.int-text h3 { font-size: 22px; }
.int-text p { color: var(--muted); margin-top: 10px; }
.int-text ol { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; counter-reset: s; }
.int-text li { counter-increment: s; display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 10px; color: var(--muted); }
.int-text li::before {
  content: counter(s, bengali); width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--border-strong);
  display: grid; place-items: center; font: 600 12px/1 var(--f-body); color: var(--text); margin-top: 2px;
}
.int-text li b { color: var(--text); font-weight: 500; }
.int-text .btn-text { margin-top: 20px; display: inline-flex; gap: 6px; color: var(--accent); }
@media (min-width: 960px) {
  .int-pane { grid-template-columns: 380px minmax(0, 1fr); gap: 56px; align-items: start; }
}

/* faq */
.faq { display: grid; gap: 40px; }
.faq-list { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 16px;
  padding: 22px 0; font: 600 17px/1.45 var(--f-body);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ico { margin-left: auto; color: var(--muted); transition: transform var(--dur) var(--ease); }
.faq details[open] summary .ico { transform: rotate(180deg); }
.faq summary:hover { color: var(--accent); }
.faq .ans { padding: 0 40px 24px 0; color: var(--muted); }
.faq .ans p + p { margin-top: 10px; }
@media (min-width: 900px) { .faq { grid-template-columns: 360px minmax(0, 1fr); gap: 72px; } }

/* closing */
.close { text-align: left; display: grid; gap: 28px; padding: 48px 0 0; }
.close-box {
  display: grid; gap: 24px; padding: 40px 28px; border: 1px solid var(--border); border-radius: 20px; background: var(--bg-soft);
}
.close-box .h2 { max-width: 18ch; }
.close-actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (min-width: 900px) {
  .close-box { grid-template-columns: minmax(0, 1fr) auto; align-items: center; padding: 56px; }
}