:root {
  --bg: #F5F6F2;
  --card: #FFFFFF;
  --ink: #0B0F0E;
  --ink-2: #3B4542;
  --ink-3: #6B7572;
  --line: #E4E7E1;
  --line-2: #EEF0EB;
  --brand: #10B981;
  --brand-ink: #047857;
  --good: #059669;  --good-bg: #ECFDF5;  --good-line: #A7F3D0;
  --warn: #B45309;  --warn-bg: #FFFBEB;  --warn-line: #FDE68A;
  --bad:  #DC2626;  --bad-bg:  #FEF2F2;  --bad-line:  #FECACA;
  --info: #2563EB;  --info-bg: #EFF6FF;  --info-line: #BFDBFE;
  --act:  #7C3AED;  --act-bg:  #F5F3FF;  --act-line:  #DDD6FE;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(11,15,14,.04), 0 8px 24px -8px rgba(11,15,14,.08);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; cursor: pointer; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
[hidden] { display: none !important; }

/* ---------- header ---------- */
.top { max-width: 760px; margin: 0 auto; padding: 20px 20px 0; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { width: 34px; height: 34px; border-radius: 10px; background: var(--brand); display: grid; place-items: center; box-shadow: 0 4px 12px -4px rgba(16,185,129,.6); }
.brand-mark svg { width: 20px; height: 20px; fill: none; stroke: #fff; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.brand-name { font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.top-link { font-size: 14px; font-weight: 600; color: var(--ink-2); text-decoration: none; padding: 8px 12px; border-radius: 999px; }
.top-link:hover { background: var(--line-2); }

main { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* ---------- hero ---------- */
.hero { padding: 56px 0 28px; text-align: center; }
.hero h1 { font-size: clamp(36px, 7vw, 56px); line-height: 1.05; letter-spacing: -0.035em; margin: 0 0 14px; font-weight: 800; }
.lede { font-size: 18px; color: var(--ink-2); max-width: 520px; margin: 0 auto 28px; }
body.has-result .hero { padding-top: 24px; padding-bottom: 8px; }
body.has-result .hero h1, body.has-result .lede, body.has-result .examples, body.has-result .networks { display: none; }

.search { display: flex; gap: 10px; max-width: 640px; margin: 0 auto; }
.search-box { flex: 1; position: relative; display: flex; align-items: center; background: var(--card); border: 2px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); transition: border-color .15s, box-shadow .15s; }
.search-box:focus-within { border-color: var(--ink); box-shadow: 0 0 0 4px rgba(11,15,14,.06), var(--shadow); }
.search-icon { width: 20px; height: 20px; margin-left: 16px; flex: none; fill: none; stroke: var(--ink-3); stroke-width: 2; stroke-linecap: round; }
.search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; padding: 17px 12px; font-size: 16px; font-family: var(--mono); color: var(--ink); }
.search input::placeholder { font-family: 'Plus Jakarta Sans', system-ui, sans-serif; color: var(--ink-3); }
.paste-btn { margin-right: 8px; border: 0; background: var(--line-2); color: var(--ink-2); font-size: 13px; font-weight: 700; padding: 8px 12px; border-radius: 10px; }
.paste-btn:hover { background: var(--line); }
.go-btn { border: 0; background: var(--ink); color: #fff; font-weight: 700; font-size: 16px; padding: 0 28px; border-radius: 16px; box-shadow: var(--shadow); transition: transform .08s, background .15s; }
.go-btn:hover { background: #1f2a27; }
.go-btn:active { transform: scale(.97); }
.input-hint { min-height: 22px; margin: 10px 0 0; font-size: 14px; color: var(--ink-3); }
.input-hint.error { color: var(--bad); }

.networks { margin-top: 18px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.networks-label, .examples-label { font-size: 13px; color: var(--ink-3); font-weight: 600; }
.chain-row, .example-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.chain-pill { display: inline-flex; align-items: center; gap: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px 4px 4px; font-size: 13px; font-weight: 600; color: var(--ink-2); }
.chain-pill.more { padding: 4px 12px; cursor: pointer; }
.chain-pill.more:hover { border-color: var(--ink-3); }
.dot { width: 20px; height: 20px; border-radius: 50%; display: inline-grid; place-items: center; color: #fff; font-size: 10px; font-weight: 800; flex: none; }

.examples { margin-top: 26px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.example-chip { border: 1px dashed var(--ink-3); background: transparent; color: var(--ink-2); border-radius: 999px; padding: 7px 14px; font-size: 13px; font-weight: 600; }
.example-chip:hover { border-style: solid; color: var(--ink); background: var(--card); }

/* ---------- progress ---------- */
.progress { max-width: 640px; margin: 16px auto 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.progress-top { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.spinner { width: 20px; height: 20px; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--brand); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.bar { height: 6px; background: var(--line-2); border-radius: 99px; margin: 16px 0 10px; overflow: hidden; }
.bar span { display: block; height: 100%; width: 0; background: var(--brand); border-radius: 99px; transition: width .25s ease; }
.progress-sub { margin: 0; font-size: 13px; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- result card ---------- */
.result { max-width: 640px; margin: 16px auto 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; animation: rise .35s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.sample-flag { background: repeating-linear-gradient(-45deg, #FEF3C7, #FEF3C7 10px, #FDE68A 10px, #FDE68A 20px); color: #78350F; font-size: 13px; font-weight: 700; text-align: center; padding: 7px 12px; }

.status { display: flex; align-items: center; gap: 14px; padding: 22px 22px 18px; }
.status-icon { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; flex: none; }
.status-icon svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.status-text { flex: 1; min-width: 0; }
.status-label { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }
.status-sub { font-size: 14px; color: var(--ink-3); margin-top: 3px; }
.s-confirmed .status-icon { background: var(--good-bg); color: var(--good); }
.s-confirmed .status-label { color: var(--good); }
.s-pending .status-icon { background: var(--warn-bg); color: var(--warn); }
.s-pending .status-label { color: var(--warn); }
.s-pending .status-icon svg { animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .45; } }
.s-failed .status-icon { background: var(--bad-bg); color: var(--bad); }
.s-failed .status-label { color: var(--bad); }
.s-notfound .status-icon, .s-address .status-icon { background: var(--line-2); color: var(--ink-2); }

.chain-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 700; background: var(--line-2); padding: 5px 10px 5px 5px; border-radius: 999px; white-space: nowrap; }

.headline { font-size: 18px; font-weight: 600; margin: 0; padding: 0 22px 18px; color: var(--ink); }

.amount { margin: 0 22px 18px; padding: 18px; background: var(--bg); border-radius: 14px; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.amount-main { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; word-break: break-word; }
.amount-main small { font-size: 18px; font-weight: 700; color: var(--ink-2); }
.amount-usd { font-size: 14px; color: var(--ink-3); font-weight: 600; }
.flow { display: flex; align-items: center; gap: 8px; width: 100%; font-size: 13px; color: var(--ink-3); margin-top: 6px; }
.flow code { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); background: var(--card); border: 1px solid var(--line); padding: 3px 7px; border-radius: 8px; }
.flow .arrow { color: var(--ink-3); }

/* advice */
.advice { padding: 0 22px 6px; display: flex; flex-direction: column; gap: 10px; }
.tip { border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; background: var(--card); }
.tip-head { display: flex; gap: 10px; align-items: flex-start; }
.tip-icon { width: 24px; height: 24px; border-radius: 8px; display: grid; place-items: center; flex: none; margin-top: 1px; }
.tip-icon svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.tip h3 { margin: 0; font-size: 15.5px; font-weight: 700; line-height: 1.35; }
.tip p { margin: 6px 0 0; color: var(--ink-2); font-size: 14.5px; }
.tip ol { margin: 10px 0 0; padding-left: 20px; color: var(--ink-2); font-size: 14.5px; }
.tip ol li { margin: 5px 0; padding-left: 2px; word-break: break-word; }
.tip .links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tip .links a { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; text-decoration: none; padding: 8px 12px; border-radius: 10px; background: var(--ink); color: #fff; }
.tip .links a:hover { background: #1f2a27; }
.tip .links a svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2.4; }
.tip-body { margin-left: 34px; }
.tip.collapsible .tip-head { cursor: pointer; }
.tip.collapsible .chev { margin-left: auto; transition: transform .2s; color: var(--ink-3); }
.tip.collapsible.closed .tip-body { display: none; }
.tip.collapsible.closed .chev { transform: rotate(-90deg); }

.t-good { background: var(--good-bg); border-color: var(--good-line); } .t-good .tip-icon { background: var(--good); color: #fff; }
.t-warn { background: var(--warn-bg); border-color: var(--warn-line); } .t-warn .tip-icon { background: #F59E0B; color: #fff; }
.t-bad { background: var(--bad-bg); border-color: var(--bad-line); } .t-bad .tip-icon { background: var(--bad); color: #fff; }
.t-info .tip-icon { background: var(--info-bg); color: var(--info); }
.t-bridge { background: var(--info-bg); border-color: var(--info-line); } .t-bridge .tip-icon { background: var(--info); color: #fff; }
.t-action { background: var(--act-bg); border-color: var(--act-line); } .t-action .tip-icon { background: var(--act); color: #fff; }

.countdown { margin-top: 12px; display: flex; align-items: center; gap: 12px; background: var(--card); border: 1px solid var(--act-line); border-radius: 12px; padding: 10px 12px; }
.countdown-ring { width: 40px; height: 40px; flex: none; }
.countdown b { display: block; font-size: 15px; }
.countdown span { font-size: 13px; color: var(--ink-3); }

/* details */
.details { margin: 12px 22px 0; border-top: 1px solid var(--line-2); }
.details summary { list-style: none; cursor: pointer; padding: 14px 0; font-weight: 700; font-size: 15px; display: flex; justify-content: space-between; align-items: center; }
.details summary::-webkit-details-marker { display: none; }
.details summary .chev { transition: transform .2s; color: var(--ink-3); }
.details[open] summary .chev { transform: rotate(180deg); }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 0; font-size: 14px; padding-bottom: 8px; }
.kv dt { color: var(--ink-3); padding: 9px 0; border-bottom: 1px solid var(--line-2); }
.kv dd { margin: 0; padding: 9px 0; border-bottom: 1px solid var(--line-2); display: flex; align-items: center; gap: 6px; min-width: 0; }
.kv dd .mono { font-family: var(--mono); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.copy { border: 0; background: transparent; color: var(--ink-3); padding: 4px; border-radius: 6px; flex: none; display: grid; place-items: center; }
.copy:hover { background: var(--line-2); color: var(--ink); }
.copy svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; }
.transfers { list-style: none; margin: 0; padding: 0; }
.transfers li { font-size: 13.5px; padding: 6px 0; display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: center; }
.transfers b { font-weight: 700; }
.transfers code { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); }

.actions { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px 22px 22px; }
.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; font-weight: 700; font-size: 14px; padding: 10px 14px; border-radius: 12px; }
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn.primary:hover { background: #1f2a27; }
.btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

.live { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-3); padding: 0 22px 14px; }
.live i { width: 8px; height: 8px; border-radius: 50%; background: var(--warn); animation: pulse 1.6s ease-in-out infinite; }

.also { font-size: 13px; color: var(--ink-3); padding: 0 22px 18px; }
.also button { border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: 3px 10px; font-size: 13px; font-weight: 600; margin: 4px 4px 0 0; }

/* ---------- help ---------- */
.help { padding: 72px 0 24px; }
.help h2 { font-size: 26px; letter-spacing: -0.02em; margin: 0 0 6px; text-align: center; }
.help-sub { text-align: center; color: var(--ink-3); margin: 0 0 24px; }
.help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.help-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.help-num { width: 28px; height: 28px; border-radius: 9px; background: var(--ink); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 14px; }
.help-card h3 { margin: 12px 0 6px; font-size: 16px; }
.help-card p { margin: 0; font-size: 14px; color: var(--ink-2); }
.faq { margin-top: 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 20px; }
.faq details { border-bottom: 1px solid var(--line-2); }
.faq details:last-child { border-bottom: 0; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 700; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; float: right; color: var(--ink-3); font-weight: 600; font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: '–'; }
.faq p { margin: 0 0 16px; color: var(--ink-2); font-size: 15px; }

/* ---------- footer ---------- */
.foot { max-width: 760px; margin: 0 auto; padding: 24px 20px 48px; }
.shield { display: flex; gap: 14px; align-items: flex-start; background: var(--ink); color: #E5E7E4; border-radius: var(--radius); padding: 18px 20px; }
.shield svg { width: 26px; height: 26px; flex: none; fill: none; stroke: var(--brand); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.shield p { margin: 0; font-size: 14.5px; }
.shield b { color: #fff; }
.foot-small { text-align: center; color: var(--ink-3); font-size: 13px; margin-top: 18px; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 12px; font-size: 14px; font-weight: 600; opacity: 0; pointer-events: none; transition: all .2s; z-index: 50; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- mobile ---------- */
@media (max-width: 640px) {
  .hero { padding-top: 36px; }
  .lede { font-size: 16px; }
  .search { flex-direction: column; }
  .go-btn { padding: 16px; }
  .help-grid { grid-template-columns: 1fr; }
  .status { padding: 18px 18px 14px; flex-wrap: wrap; }
  .status-text { flex: 1 1 calc(100% - 70px); }
  .status .chain-tag { order: 3; margin-left: 66px; }
  .headline { padding: 0 18px 16px; font-size: 17px; }
  .amount { margin: 0 18px 16px; }
  .amount-main { font-size: 26px; }
  .advice { padding: 0 18px 6px; }
  .details { margin: 12px 18px 0; }
  .kv { grid-template-columns: 105px 1fr; }
  .actions { padding: 16px 18px 20px; }
  .actions .btn { flex: 1 1 auto; justify-content: center; }
  .tip-body { margin-left: 0; }
}