:root {
  --font-body: "Avenir Next", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-display: "Avenir Next", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-mono: "SFMono-Regular", "Cascadia Code", "Noto Sans Mono", monospace;
  --radius: 12px; --radius-lg: 16px;
  --bg: #edf4ff; --panel: #ffffff; --panel-solid: #ffffff; --panel-soft: #f8faff;
  --text: #111827; --muted: #53627a; --faint: #64748b; --line: #d7e2f2;
  --line-strong: #91b2ef; --accent: #2854d9; --violet: #4f46e5; --success: #0f9f76;
  --warning: #b7791f; --danger: #dc3545; --shadow: 0 18px 45px rgba(35, 67, 126, .12);
  --shadow-soft: 0 10px 30px rgba(44, 78, 132, .08); --glow: 0 0 0 4px rgba(40, 84, 217, .11);
}
html[data-theme="light"] {
  color-scheme: light;
  --bg: #edf4ff; --panel: #ffffff; --panel-solid: #ffffff; --panel-soft: #f8faff;
  --text: #111827; --muted: #53627a; --faint: #64748b; --line: #d7e2f2;
  --line-strong: #91b2ef; --accent: #2854d9; --violet: #4f46e5; --success: #0f9f76;
  --warning: #b7791f; --danger: #dc3545; --shadow: 0 18px 45px rgba(35, 67, 126, .12); --glow: 0 0 0 4px rgba(40, 84, 217, .11);
}
@media (prefers-color-scheme: light) {
  html[data-theme="system"] {
    color-scheme: light;
    --bg: #edf4ff; --panel: #ffffff; --panel-solid: #ffffff; --panel-soft: #f8faff;
    --text: #111827; --muted: #53627a; --faint: #64748b; --line: #d7e2f2;
    --line-strong: #91b2ef; --accent: #2854d9; --violet: #4f46e5; --success: #0f9f76;
    --warning: #b7791f; --danger: #dc3545; --shadow: 0 18px 45px rgba(35, 67, 126, .12); --glow: 0 0 0 4px rgba(40, 84, 217, .11);
  }
}
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220; --panel: #111c2f; --panel-solid: #111c2f; --panel-soft: #16243a;
  --text: #edf4ff; --muted: #a8b5c8; --faint: #94a3b8; --line: #293a55;
  --line-strong: #466da9; --accent: #6ea2ff; --violet: #9997ff; --success: #58d3a7;
  --warning: #f1c46d; --danger: #ff8794; --shadow: 0 18px 55px rgba(0, 0, 0, .32); --glow: 0 0 0 4px rgba(110, 162, 255, .14);
}
@media (prefers-color-scheme: dark) {
  html[data-theme="system"] {
    color-scheme: dark;
    --bg: #0b1220; --panel: #111c2f; --panel-solid: #111c2f; --panel-soft: #16243a;
    --text: #edf4ff; --muted: #a8b5c8; --faint: #94a3b8; --line: #293a55;
    --line-strong: #466da9; --accent: #6ea2ff; --violet: #9997ff; --success: #58d3a7;
    --warning: #f1c46d; --danger: #ff8794; --shadow: 0 18px 55px rgba(0, 0, 0, .32); --glow: 0 0 0 4px rgba(110, 162, 255, .14);
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body { min-height: 100vh; margin: 0; overflow-x: hidden; color: var(--text); font-family: var(--font-body); font-size: 15px; line-height: 1.6; background: var(--bg); transition: background-color .2s ease, color .2s ease; }
button, input, textarea, select { font: inherit; }
button, select { min-height: 44px; }
button { color: inherit; }
[hidden] { display: none !important; }
h1, h2, h3, h4, p, dd { overflow-wrap: anywhere; }
.ambient-grid { position: fixed; inset: 0; z-index: -1; pointer-events: none; background-image: linear-gradient(rgba(80, 116, 170, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(80, 116, 170, .07) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .76) 72%, transparent 100%); }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 14px; transform: translateY(-180%); border-radius: var(--radius); background: var(--accent); color: #fff; }
.skip-link:focus { transform: translateY(0); }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.app-shell { width: calc(100% - 32px); max-width: 1040px; margin: 0 auto; padding: 28px 0 64px; }
.header-card { border: 1px solid var(--line); border-radius: 16px; background: color-mix(in srgb, var(--panel) 97%, transparent); box-shadow: var(--shadow); overflow: hidden; }
.site-header { width: 100%; }
.site-header > * { min-width: 0; }
.header-main { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 132px; padding: 24px; }
.header-identity { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand { flex: 0 0 auto; color: inherit; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 48px; aspect-ratio: 1; border-radius: 10px; background: #2854d9; color: #fff; font: 800 18px/1 var(--font-display); box-shadow: 0 10px 24px rgba(40, 84, 217, .2); }
.brand-mark span { color: #bcd4ff; }
.header-copy { min-width: 0; }
.eyebrow, .kicker { margin: 0 0 3px; color: #14756f; font: 760 12px/1.4 var(--font-body); letter-spacing: .12em; text-transform: uppercase; }
.pulse-dot { display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 12%, transparent); animation: pulse 2.2s ease-in-out infinite; }
.header-copy h1 { margin: 0; font: 780 38px/1.1 var(--font-display); letter-spacing: -.045em; }
.header-copy > p:last-child { max-width: 560px; margin: 4px 0 0; color: var(--muted); font-size: 14px; font-weight: 560; }
.header-actions { display: grid; justify-items: end; gap: 12px; flex: 0 0 auto; }
.header-controls { display: flex; align-items: center; gap: 8px; }
.tutorial-link { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--text); font-size: 13px; font-weight: 700; text-decoration: none; box-shadow: var(--shadow-soft); transition: color .16s ease, border-color .16s ease, transform .16s ease; }
.tutorial-link:hover { color: var(--accent); border-color: var(--line-strong); transform: translateY(-1px); }
.compact-control, .theme-switcher { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-soft); color: var(--text); }
.compact-control { min-height: 42px; padding: 0 10px; cursor: pointer; }
.theme-switcher { display: flex; padding: 3px; }
.theme-switcher button { min-width: 34px; min-height: 34px; padding: 0; border: 0; border-radius: 6px; background: transparent; color: var(--muted); cursor: pointer; }
.theme-switcher button.is-active { background: var(--panel); color: var(--accent); box-shadow: 0 1px 5px rgba(37, 99, 235, .14), inset 0 0 0 1px var(--line); }
.service-status { display: none; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; }
.status-light { width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.header-nav-row { display: grid; grid-template-columns: minmax(0, 520px) auto; align-items: center; justify-content: space-between; gap: 24px; padding: 4px 24px 16px; border-top: 0; background: var(--panel); }
.primary-nav { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 4px; width: 100%; max-width: 520px; min-width: 0; padding: 4px; border-radius: 8px; background: var(--panel-soft); }
.nav-item { min-width: 0; min-height: 42px; padding: 0 12px; border: 0; border-radius: 7px; background: transparent; color: var(--muted); cursor: pointer; white-space: nowrap; font-size: 14px; font-weight: 680; transition: background .16s ease, color .16s ease, box-shadow .16s ease, transform .16s ease; }
.nav-item:hover { color: var(--text); background: color-mix(in srgb, var(--panel) 72%, transparent); }
.nav-item.is-active { background: var(--panel); color: var(--accent); box-shadow: 0 3px 12px rgba(37, 99, 235, .09), inset 0 0 0 1px var(--line); }
.nav-index { display: none; margin-right: 7px; color: var(--faint); font: 700 12px var(--font-mono); }
.nav-item.is-active .nav-index { color: var(--accent); }
.header-queue-summary { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--muted); font-size: 13px; white-space: nowrap; }
.header-queue-summary strong { min-width: 18px; color: var(--accent); font: 780 22px var(--font-display); text-align: center; }
.status-chip { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; }
.status-chip i { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.is-success, .status-chip.is-success { color: var(--success); }
.is-warning, .status-chip.is-warning { color: var(--warning); }
.is-error, .status-chip.is-error { color: var(--danger); }
main { width: 100%; padding-top: 20px; }
.view-panel { animation: rise-in .35s both; }
.workflow-stack { display: grid; gap: 18px; }
.panel { position: relative; min-width: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel); box-shadow: var(--shadow-soft); }
.primary-panel, .wide-panel, .subscription-panel, .operation-panel { padding: 32px; }
.primary-panel { padding: 32px; }
.operation-panel, .subscription-panel { max-width: 880px; margin: 0 auto; }
.progress-card { padding: 14px 16px; }
.panel-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 26px; }
.panel-header.compact { margin-bottom: 16px; }
.panel-header h2 { margin: 0; font: 740 clamp(22px, 3vw, 30px)/1.2 var(--font-display); letter-spacing: -.025em; }
.panel-toolbar { position: absolute; top: 28px; right: 28px; z-index: 1; display: none; justify-content: flex-end; }
#recharge-view .primary-panel:has(#session-form:not([hidden])) .panel-toolbar,
#recharge-view .primary-panel:has(#recharge-confirmation:not([hidden])) .panel-toolbar,
#recharge-view .primary-panel:has(#recharge-success:not([hidden])) .panel-toolbar { display: flex; }
.panel-description { max-width: 660px; margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.icon-button { display: grid; place-items: center; width: 44px; flex: 0 0 44px; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-soft); color: var(--muted); cursor: pointer; transition: color .16s ease, border-color .16s ease, transform .16s ease; }
.icon-button:hover { border-color: var(--line-strong); color: var(--accent); transform: rotate(-16deg); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; }
.step-marker { position: relative; display: grid; grid-template-columns: 34px minmax(0, 1fr); align-items: center; gap: 10px; color: var(--faint); }
.step-marker:not(:last-child)::after { content: ""; position: absolute; z-index: 0; top: 17px; right: 12px; left: 46px; height: 2px; background: var(--line); }
.step-marker span { display: grid; place-items: center; z-index: 1; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); font: 760 14px var(--font-display); }
.step-marker strong { z-index: 1; width: fit-content; padding-right: 12px; background: var(--panel); font-size: 14px; font-weight: 700; line-height: 1.35; }
.step-marker.is-current { color: var(--text); }
.step-marker.is-current span { border-color: #82b5ff; background: #e7f1ff; color: var(--accent); box-shadow: none; }
.form-stack { display: grid; gap: 20px; }
.primary-panel > .form-stack { gap: 14px; }
.field-group { display: grid; gap: 8px; }
.field-group label { color: var(--text); font-size: 16px; font-weight: 720; }
.field-hint { margin: 0; color: var(--muted); font-size: 13px; }
#cdk-help { display: none; }
input, textarea, select { outline: none; }
input, textarea { width: 100%; min-width: 0; padding: 13px 15px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-soft); color: var(--text); caret-color: var(--accent); transition: border-color .16s ease, box-shadow .16s ease, background .16s ease; }
input { min-height: 52px; }
textarea { resize: vertical; min-height: 140px; font-family: var(--font-mono); font-size: 13px; line-height: 1.65; }
input::placeholder, textarea::placeholder { color: var(--faint); opacity: .82; }
input:hover, textarea:hover { border-color: var(--line-strong); }
input:focus, textarea:focus, select:focus { border-color: var(--accent); background: var(--panel); box-shadow: var(--glow); }
.button-row { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 0 24px; border: 1px solid transparent; border-radius: var(--radius); cursor: pointer; font-size: 16px; font-weight: 720; transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease, background .16s ease; }
.form-stack > .button { width: 100%; }
#cdk-form:has(#cdk-input:placeholder-shown) > .button { opacity: .5; filter: saturate(.55); }
.button-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 18px color-mix(in srgb, var(--accent) 20%, transparent); }
.button-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px color-mix(in srgb, var(--accent) 25%, transparent); }
.button-secondary { border-color: var(--line-strong); background: color-mix(in srgb, var(--accent) 7%, var(--panel)); color: var(--accent); }
.button-ghost { border-color: var(--line); background: var(--panel-soft); color: var(--muted); }
.button-danger { border-color: color-mix(in srgb, var(--danger) 38%, var(--line)); background: color-mix(in srgb, var(--danger) 8%, var(--panel)); color: var(--danger); }
.button[data-countdown]::after { content: "(" attr(data-countdown) "s)"; margin-left: 5px; font-family: var(--font-mono); }
button:disabled, input:disabled, textarea:disabled { cursor: not-allowed; opacity: .5; filter: saturate(.55); transform: none; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 38%, transparent); outline-offset: 2px; }
.privacy-note { display: flex; gap: 11px; padding: 13px 15px; border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line)); border-radius: var(--radius); background: color-mix(in srgb, var(--accent) 5%, var(--panel)); color: var(--muted); font-size: 13px; }
.privacy-note p { margin: 0; }
.privacy-note > span { color: var(--accent); }
.state-card { margin-top: 24px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-soft); }
.state-card h3 { margin: 0 0 8px; font: 720 22px var(--font-display); }
.state-card p { margin: 0; color: var(--muted); }
.state-icon { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 13px; border-radius: 50%; background: color-mix(in srgb, var(--success) 12%, transparent); color: var(--success); }
.operation-status.is-loading { color: var(--accent); }
.operation-status.is-error { border-color: color-mix(in srgb, var(--danger) 35%, var(--line)); }
.operation-status.is-success { border-color: color-mix(in srgb, var(--success) 35%, var(--line)); }
.operation-status.is-warning { border-color: color-mix(in srgb, var(--warning) 35%, var(--line)); }
.code-output { display: block; margin: 18px 0 10px; padding: 15px; border: 1px dashed var(--line-strong); border-radius: var(--radius); background: var(--panel); color: var(--accent); font: 700 15px var(--font-mono); overflow-wrap: anywhere; }
.data-list { margin: 18px 0; }
.data-list div { display: flex; justify-content: space-between; gap: 18px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.data-list dt { color: var(--muted); }
.data-list dd { margin: 0; font-family: var(--font-mono); text-align: right; }
.side-stack { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
#recharge-view .side-stack { display: none; }
.announcement-card, .queue-card { min-height: 175px; padding: 24px; overflow: hidden; }
.announcement-card h2, .queue-card h2 { margin: 0 0 10px; font: 720 20px var(--font-display); }
.announcement-card > p:last-of-type { margin: 0; color: var(--muted); font-size: 13px; }
.announcement-card time { margin-left: 8px; color: var(--faint); font-weight: 500; letter-spacing: 0; }
.corner-glyph { position: absolute; right: 12px; bottom: -38px; color: color-mix(in srgb, var(--accent) 9%, transparent); font: 100px var(--font-display); transform: rotate(-10deg); }
.task-list { margin: 0; padding: 0; list-style: none; }
.empty-state { display: grid; place-items: center; min-height: 130px; padding: 22px; color: var(--faint); text-align: center; }
.empty-state span { color: var(--line-strong); font: 22px var(--font-mono); }
.empty-state h3, .empty-state p { margin: 5px 0; }
.wide-panel { margin-bottom: 16px; }
.segmented-control { display: inline-flex; margin-bottom: 26px; padding: 4px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-soft); }
.segmented-control button { padding: 0 18px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); cursor: pointer; }
.segmented-control button[aria-selected="true"] { background: var(--panel); color: var(--accent); box-shadow: 0 2px 9px rgba(37, 99, 235, .1), inset 0 0 0 1px var(--line); }
.lookup-form { max-width: 760px; }
.consent-control { display: flex; align-items: flex-start; gap: 11px; width: fit-content; margin-top: 24px; cursor: pointer; }
.consent-control input { width: 18px; height: 18px; min-height: 0; margin-top: 3px; accent-color: var(--accent); }
.consent-control span { display: grid; }
.consent-control strong { font-size: 13px; }
.consent-control small { color: var(--muted); font-size: 12px; }
.saved-records-panel { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); }
.saved-records-panel h3 { font-size: 14px; }
.saved-record { width: 100%; padding: 11px 0; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--accent); text-align: left; cursor: pointer; }
.results-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(250px, .65fr); gap: 16px; }
.results-grid > .empty-state, .results-grid > .is-loading { grid-column: 1 / -1; }
.result-detail, .stats { padding: 26px; }
.stat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.stat { display: grid; gap: 2px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-soft); }
.stat strong { font: 720 24px var(--font-display); }
.stat small { color: var(--muted); }
.countdown { display: inline-flex; align-items: center; min-height: 30px; padding: 0 9px; border: 1px solid color-mix(in srgb, var(--warning) 40%, var(--line)); border-radius: 999px; color: var(--warning); font: 12px var(--font-mono); }
.is-loading { padding: 32px; }
.skeleton { height: 17px; margin: 12px 0; border-radius: 6px; background: linear-gradient(90deg, var(--panel-soft), color-mix(in srgb, var(--text) 8%, var(--panel-soft)), var(--panel-soft)); background-size: 220% 100%; animation: shimmer 1.4s linear infinite; }
.skeleton.short { width: 62%; }
.toast-region { position: fixed; right: 22px; bottom: 22px; z-index: 20; display: grid; gap: 10px; width: min(360px, calc(100% - 44px)); pointer-events: none; }
.toast { padding: 14px 16px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--panel-solid); color: var(--text); box-shadow: var(--shadow); animation: toast-in .24s both; }
.toast.is-error { border-color: color-mix(in srgb, var(--danger) 45%, var(--line)); }
.toast.is-success { border-color: color-mix(in srgb, var(--success) 45%, var(--line)); }
.modal { width: min(510px, calc(100% - 28px)); padding: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel-solid); color: var(--text); box-shadow: 0 30px 90px rgba(6, 16, 33, .32); }
.modal::backdrop { background: rgba(9, 18, 34, .55); backdrop-filter: blur(5px); }
.modal form { padding: 30px; }
.modal h2 { margin: 0 0 10px; font: 720 25px var(--font-display); }
.modal p { margin: 0 0 22px; color: var(--muted); }
.modal-glyph { display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 16px; border-radius: 50%; background: color-mix(in srgb, var(--accent) 9%, var(--panel)); color: var(--accent); font: 700 18px var(--font-mono); }
.modal-glyph.warning, .warning-copy { color: var(--warning); }
.modal output { display: block; margin: -7px 0 20px; padding: 13px; border: 1px dashed var(--line); border-radius: var(--radius); color: var(--accent); font-family: var(--font-mono); }
.tutorial-page { min-height: 100vh; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.6; }
.tutorial-page .ambient-grid { background-image: radial-gradient(circle at 82% 0, rgba(79, 70, 229, .08), transparent 34%); background-size: auto; mask-image: none; }
.tutorial-shell { width: calc(100% - 32px); max-width: 720px; margin: 0 auto; padding: 28px 0 64px; }
.tutorial-topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.back-link { color: var(--muted); font-weight: 680; text-decoration: none; transition: color .16s ease; }
.back-link:hover { color: var(--accent); }
.tutorial-hero { padding: 24px 0 21px; text-align: center; }
.tutorial-hero h1 { margin: 0 0 8px; font: 800 34px/1.6 var(--font-display); letter-spacing: -.04em; }
.tutorial-hero > p:last-child { margin: 0; color: var(--muted); font-size: 16px; }
.tutorial-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 30px; }
.tutorial-nav a { padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); color: var(--text); font-weight: 650; text-decoration: none; box-shadow: 0 4px 14px rgba(35, 67, 126, .05); transition: color .16s ease, border-color .16s ease, transform .16s ease; }
.tutorial-nav a:hover { color: var(--accent); border-color: var(--line-strong); transform: translateY(-1px); }
.tutorial-card { margin-bottom: 18px; padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: var(--panel); box-shadow: var(--shadow-soft); scroll-margin-top: 24px; }
.tutorial-card > h2 { margin: 0 0 14px; font: 760 22px/1.3 var(--font-display); }
.tutorial-card > p { margin: 0; color: var(--muted); }
.tutorial-steps { display: grid; gap: 12px; margin: 16px 0 0; padding: 0; list-style: none; }
.tutorial-step { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 14px; align-items: start; }
.tutorial-step > span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 14px; font-weight: 800; box-shadow: 0 7px 16px color-mix(in srgb, var(--accent) 22%, transparent); }
.tutorial-step h3 { margin: 1px 0 3px; font-size: 16px; }
.tutorial-step p { margin: 0; color: var(--muted); }
.tutorial-step code { padding: 2px 5px; border-radius: 5px; background: var(--panel-soft); color: var(--accent); font-family: var(--font-mono); overflow-wrap: anywhere; }
.tutorial-note { margin-top: 24px !important; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); }
.tutorial-note.is-safe { background: color-mix(in srgb, var(--success) 8%, var(--panel)); color: var(--success); }
.tutorial-note.is-warning { background: color-mix(in srgb, var(--warning) 10%, var(--panel)); color: var(--warning); }
.faq-list { margin: 0; }
.faq-list div { padding: 18px 0; border-bottom: 1px solid var(--line); }
.faq-list div:last-child { padding-bottom: 0; border-bottom: 0; }
.faq-list dt { font-weight: 750; }
.faq-list dd { margin: 7px 0 0; color: var(--muted); }
.tutorial-cta { display: flex; width: fit-content; margin: 34px auto 26px; text-decoration: none; }
.tutorial-footer { color: var(--faint); font-size: 13px; text-align: center; }
@keyframes rise-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 50% { opacity: .5; box-shadow: 0 0 0 2px color-mix(in srgb, var(--success) 10%, transparent); } }
@keyframes shimmer { to { background-position: -220% 0; } }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }
@media (max-width: 800px) {
  .app-shell { width: calc(100% - 24px); padding-top: 12px; }
  .header-main { padding: 22px; }
  .header-identity { align-items: flex-start; }
  .header-nav-row { grid-template-columns: 1fr; }
  .header-queue-summary { width: 100%; justify-content: center; justify-self: start; }
  .nav-index { display: none; }
  .side-stack, .results-grid { grid-template-columns: 1fr; }
  .results-grid > * { grid-column: 1; }
  .primary-panel, .wide-panel, .subscription-panel, .operation-panel { padding: 25px 20px; }
  .button-row .button { flex: 1 1 auto; }
}
@media (max-width: 600px) {
  .header-main { flex-direction: column; }
  .header-actions { width: 100%; justify-items: stretch; }
  .header-controls { justify-content: space-between; flex-wrap: wrap; }
  .service-status { display: none; }
  .header-copy h1 { font-size: 27px; }
  .steps { grid-template-columns: 1fr; gap: 14px; }
  .step-marker { grid-template-columns: 38px minmax(0, 1fr); gap: 10px; }
  .step-marker span { width: 38px; height: 38px; border-radius: 10px; }
  .step-marker:not(:last-child)::after { display: none; }
  .step-marker strong { font-size: 12px; }
  .tutorial-shell { width: calc(100% - 20px); padding-top: 18px; }
  .tutorial-topbar { align-items: flex-start; flex-direction: column; }
  .tutorial-topbar .header-controls { width: 100%; }
  .tutorial-hero { padding-top: 38px; }
  .tutorial-nav { justify-content: center; }
}
@media (max-width: 430px) {
  .app-shell { width: calc(100% - 16px); }
  .header-main { padding: 18px 16px; }
  .header-identity { gap: 12px; }
  .header-copy > p:last-child { font-size: 13px; }
  .header-nav-row { padding: 10px; }
  .primary-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
  .nav-item { min-width: 0; min-height: 42px; padding: 0 7px; font-size: 13px; }
  .nav-item:last-child { grid-column: 1 / -1; }
  .header-queue-summary { width: 100%; justify-content: center; }
  .progress-card { padding: 16px 12px; }
  .step-marker { display: grid; }
  .step-marker strong { padding-right: 4px; font-size: 12px; }
  .primary-panel, .wide-panel, .subscription-panel, .operation-panel { padding: 22px 16px; }
  .panel-toolbar { top: 22px; right: 16px; }
  .panel-header { margin-bottom: 22px; }
  .segmented-control { display: flex; width: 100%; }
  .segmented-control button { flex: 1; padding: 0 7px; }
  .data-list div { align-items: flex-start; flex-direction: column; gap: 4px; }
  .data-list dd { width: 100%; text-align: left; }
  .button-row { flex-direction: column; }
  .button-row .button { width: 100%; }
  .modal form { padding: 24px 20px; }
  .tutorial-card { padding: 20px; border-radius: 16px; }
  .tutorial-step { grid-template-columns: 30px minmax(0, 1fr); gap: 12px; }
}
@media (max-width: 360px) {
  .header-controls { display: grid; grid-template-columns: minmax(0, 1fr) auto; }
  .compact-control { width: 100%; min-width: 0; }
  .theme-switcher button { min-width: 34px; }
  .header-copy h1 { font-size: 24px; }
  .step-marker strong { font-size: 12px; line-height: 1.3; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Target exchange visual system. Keep this final override block aligned with the
   captured MHTML cascade; the tutorial rules above intentionally remain intact. */
.exchange-page {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-display: var(--font-body);
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --exchange-blue: #2563eb;
  --exchange-purple: #0f766e;
  --exchange-green: #0f766e;
  --exchange-orange: #b7791f;
  --exchange-red: #dc3545;
  --exchange-card: rgba(255, 255, 255, .94);
  --exchange-soft: #f8fafc;
  --exchange-input-bg: #fff;
  --exchange-input-focus: #fff;
  --exchange-border: #dbe3ef;
  --exchange-border-strong: #93c5fd;
  --exchange-line: #e5eaf3;
  --exchange-text: #101828;
  --exchange-muted: #475467;
  --exchange-subtle: #667085;
  --exchange-shadow: 0 14px 36px rgba(15, 23, 42, .08);
  --exchange-glow: 0 12px 28px rgba(37, 99, 235, .16);
  --exchange-good-bg: #ecfdf5;
  --exchange-good-text: #047857;
  --exchange-warn-bg: #fffbeb;
  --exchange-warn-text: #b45309;
  --exchange-err-bg: #fef2f2;
  --exchange-err-text: #b91c1c;
  --exchange-info-bg: #eff6ff;
  --exchange-info-text: #1d4ed8;
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 100svh;
  overflow-x: hidden;
  padding: clamp(18px, 3.6vh, 36px) clamp(14px, 2.8vw, 28px) clamp(32px, 5vh, 56px);
  background: linear-gradient(rgba(248, 250, 252, .94), rgba(239, 246, 255, .86) 52%, rgba(248, 250, 252, .98)), #f8fafc;
  color: var(--exchange-text);
  font-family: var(--font-body);
}
body { font-size: 16px; line-height: 1.6; }
.exchange-page::before,
.exchange-page::after { content: ""; position: fixed; inset: 0; pointer-events: none; }
.exchange-page::before {
  z-index: -2;
  opacity: .55;
  background-image: linear-gradient(rgba(15, 23, 42, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(15, 23, 42, .04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.exchange-page::after {
  z-index: -1;
  background: linear-gradient(120deg, rgba(37, 99, 235, .08), transparent 34%), linear-gradient(260deg, rgba(15, 118, 110, .08), transparent 38%);
}
.exchange-container { position: relative; z-index: 1; width: min(100%, 1040px); max-width: 1040px; min-width: 0; margin: 0 auto; padding-top: 0; }
.exchange-shell {
  min-width: 0;
  margin-bottom: 20px;
  padding: clamp(16px, 2.8vw, 24px);
  border: 1px solid rgba(219, 227, 239, .9);
  border-radius: 8px;
  background: rgba(255, 255, 255, .82);
  box-shadow: var(--exchange-shadow);
}
.exchange-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 20px; text-align: left; }
.exchange-title-block { display: flex; align-items: center; justify-content: flex-start; gap: 14px; min-width: 0; }
.exchange-brand-mark { display: inline-flex; flex: 0 0 auto; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 8px; background: #1d4ed8; color: #fff; box-shadow: 0 10px 22px rgba(37, 99, 235, .2); font-size: 15px; font-weight: 900; line-height: 1; }
.exchange-title-copy { min-width: 0; }
.exchange-eyebrow { display: block; margin-bottom: 5px; color: #0f766e; font-size: 12px; font-weight: 900; letter-spacing: .06em; line-height: 1.2; text-transform: uppercase; }
.exchange-header h1 { margin: 0; background: none; color: var(--exchange-text); filter: none; font: 900 clamp(25px, 3.4vw, 38px)/1.1 var(--font-display); letter-spacing: 0; }
.exchange-header p { margin: 6px 0 0; color: var(--exchange-muted); font-size: 14px; font-weight: 600; letter-spacing: 0; line-height: 1.55; }
.exchange-tools { position: static; display: flex; flex: 0 0 auto; align-items: center; gap: 8px; }
.exchange-tools .btn-ghost { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; min-height: 40px; padding: 8px 12px; border: 1px solid var(--exchange-border); border-radius: 8px; background: #fff; color: var(--exchange-muted); box-shadow: 0 1px 2px rgba(15, 23, 42, .05); cursor: pointer; font-size: 13px; font-weight: 800; line-height: 1; text-decoration: none; transition: border-color .16s ease, color .16s ease, background .16s ease; }
.exchange-tools .btn-ghost:hover { border-color: #bfdbfe; color: var(--exchange-blue); transform: none; }
.exchange-tools .tutorial-link { width: auto; padding-inline: 13px; }
#language-toggle { min-width: 42px; height: 42px; padding: 0 10px; font-size: 14px; font-weight: 700; }
#theme-toggle { width: 42px; min-width: 42px; height: 42px; min-height: 42px; padding: 0; }
.exchange-theme-icon { display: block; width: 20px; height: 20px; }
.exchange-theme-icon[hidden] { display: none; }
.exchange-switchboard { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; min-width: 0; }
.exchange-tabs { display: flex; gap: 8px; width: 100%; max-width: 520px; min-width: 0; margin: 0; padding: 4px; border: 1px solid #e2e8f0; border-radius: 8px; background: #f1f5f9; box-shadow: none; }
.exchange-tab { flex: 1 1 0; min-width: 0; min-height: 40px; padding: 8px 12px; border: 1px solid transparent; border-radius: 6px; background: transparent; color: #475467; cursor: pointer; font: 800 14px/1.6 var(--font-body); white-space: nowrap; transition: background .16s ease, border-color .16s ease, color .16s ease, box-shadow .16s ease; }
.exchange-tab:hover { border-color: transparent; background: rgba(255, 255, 255, .72); color: #1d4ed8; box-shadow: none; }
.exchange-tab.active { border-color: #dbeafe; background: #fff; color: #1d4ed8; box-shadow: 0 1px 3px rgba(15, 23, 42, .08); }
html[lang="en"] .exchange-tab { white-space: normal; overflow-wrap: anywhere; }
.exchange-queue-bar { display: flex; align-items: center; gap: 10px; width: 335.97px; max-width: 360px; min-height: 44px; margin: 0; padding: 8px 12px; border: 1px solid var(--exchange-border); border-radius: 8px; background: #fff; color: var(--exchange-muted); box-shadow: none; font-size: 13px; font-weight: 800; white-space: nowrap; }
.exchange-queue-main { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 8px; min-width: 0; font-size: 13px; font-weight: 800; }
.exchange-queue-dot { flex: 0 0 auto; width: 8px; height: 8px; border-radius: 50%; background: var(--exchange-orange); box-shadow: 0 0 0 4px rgba(183, 121, 31, .16); }
.exchange-queue-dot.connected { background: var(--exchange-green); box-shadow: 0 0 0 4px rgba(15, 118, 110, .16); }
.exchange-queue-dot.muted { background: var(--exchange-subtle); box-shadow: 0 0 0 4px rgba(102, 112, 133, .12); }
.exchange-queue-count { min-width: 2ch; color: #1d4ed8; font-size: 22px; font-variant-numeric: tabular-nums; font-weight: 900; line-height: 1; text-align: right; }
#queue-unit { font-size: 16px; font-weight: 400; }
.exchange-queue-state { margin-left: auto; color: #64748b; font-size: 12px; font-weight: 700; white-space: nowrap; }
.exchange-section { animation: exchange-fade .22s ease both; }
.exchange-steps { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin: 0 0 16px; padding: 14px 16px; border: 1px solid rgba(219, 227, 239, .9); border-radius: 8px; background: rgba(255, 255, 255, .68); box-shadow: 0 8px 24px rgba(15, 23, 42, .04); list-style: none; }
.exchange-step { display: flex; flex: 0 0 auto; align-items: center; gap: 10px; width: auto; min-width: 0; color: var(--exchange-subtle); text-align: left; }
.exchange-step-number { display: flex; flex: 0 0 auto; align-items: center; justify-content: center; width: 34px; height: 34px; margin: 0; border: 1px solid var(--exchange-border); border-radius: 8px; background: var(--exchange-card); color: var(--exchange-subtle); font-size: 14px; font-weight: 800; transition: .25s; }
.exchange-step.active .exchange-step-number { border-color: #93c5fd; background: #dbeafe; color: #1d4ed8; box-shadow: none; }
.exchange-step.completed .exchange-step-number { border-color: #0f766e; background: #0f766e; color: #fff; box-shadow: none; }
.exchange-step-label { flex: 0 0 auto; color: var(--exchange-muted); font-size: 13px; font-weight: 800; line-height: 1.25; }
.exchange-step.active .exchange-step-label { color: #1d4ed8; font-weight: 700; }
.exchange-step-line { flex: 1 1 auto; max-width: none; height: 2px; margin-top: 16px; border-radius: 999px; background: var(--exchange-line); overflow: hidden; }
.exchange-step-line.completed { background: #0f766e; box-shadow: none; }
.exchange-card { padding: clamp(18px, 3.2vw, 30px); border: 1px solid rgba(219, 227, 239, .95); border-radius: 8px; background: var(--exchange-card); box-shadow: var(--exchange-shadow); backdrop-filter: blur(14px); }
.exchange-card-panel { animation: exchange-fade-up .34s ease both; }
.exchange-form-group { margin-bottom: 20px; }
.exchange-form-group label { display: block; margin-bottom: 8px; color: #1f2937; font-size: 14px; font-weight: 900; letter-spacing: 0; }
.exchange-input { width: 100%; min-width: 0; min-height: 50px; padding: 13px 14px; border: 1px solid #cfd8e7; border-radius: 8px; outline: none; background: #fff; color: var(--exchange-text); box-shadow: 0 1px 2px rgba(15, 23, 42, .04); caret-color: var(--exchange-blue); font-family: inherit; font-size: 15px; transition: background .2s ease, border-color .2s ease, box-shadow .2s ease; }
.exchange-input:hover { border-color: #93c5fd; }
.exchange-input:focus { border-color: #2563eb; background: var(--exchange-input-focus); box-shadow: 0 0 0 4px rgba(37, 99, 235, .12); }
.exchange-input::placeholder { color: var(--exchange-subtle); opacity: 1; }
.exchange-textarea { height: 124px; min-height: 124px; resize: vertical; font-family: var(--font-mono); line-height: 1.6; }
.exchange-textarea.short { height: 96px; min-height: 96px; }
.exchange-hint { margin: 9px 0 0; color: #667085; font-size: 13px; line-height: 1.7; }
.exchange-hint a { border-bottom: 1px solid rgba(37, 99, 235, .24); color: #1d4ed8; text-decoration: none; }
.exchange-buttons { display: flex; gap: 12px; margin-top: 22px; }
.exchange-buttons.split > * { flex: 1 1 0; }
.exchange-btn { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 100%; min-height: 48px; padding: 12px 18px; overflow: hidden; border: 1px solid var(--exchange-border); border-radius: 8px; background: transparent; color: var(--exchange-muted); cursor: pointer; font-size: 15px; font-weight: 800; line-height: 24px; text-decoration: none; transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, color .2s ease, transform .2s ease; }
.exchange-btn.primary { border-color: #2563eb; background: #2563eb; color: #fff; box-shadow: 0 10px 18px rgba(37, 99, 235, .18); }
.exchange-btn.primary:hover:not(:disabled) { border-color: #1d4ed8; background: #1d4ed8; box-shadow: 0 14px 24px rgba(37, 99, 235, .22); transform: translateY(-1px); }
.exchange-btn.secondary { border-color: #cfd8e7; background: #fff; color: #344054; }
.exchange-btn.secondary:hover:not(:disabled) { border-color: #94a3b8; background: #f8fafc; }
.exchange-btn:disabled { cursor: not-allowed; opacity: .5; filter: none; transform: none; }
#recharge-view .exchange-card { min-height: 216.39px; }
#lookup-view .exchange-card { min-height: 299.08px; }
#subscription-view .exchange-card { min-height: 299.08px; }
#replacement-view .exchange-card { min-height: 269.58px; }
#cancellation-view .exchange-card { min-height: 247.48px; }

/* Later workflow states and operation recovery use the same restrained cards. */
.exchange-card .state-card,
.exchange-card > section:not([hidden]) { margin-top: 22px; padding: 18px; border: 1px solid var(--exchange-line); border-radius: 8px; background: var(--exchange-soft); color: var(--exchange-text); }
.exchange-card > section[hidden] { display: none !important; }
.exchange-card .state-card h3,
.exchange-card > section h3 { margin: 0 0 8px; color: var(--exchange-text); font-size: 20px; font-weight: 900; }
.exchange-card .state-card p,
.exchange-card > section p { margin: 0; color: var(--exchange-muted); }
.exchange-card .is-loading { border-color: var(--exchange-border-strong); color: var(--exchange-info-text); }
.exchange-card .is-error { border-color: #fecaca; background: var(--exchange-err-bg); color: var(--exchange-err-text); }
.exchange-card .is-success { border-color: #a7f3d0; background: var(--exchange-good-bg); color: var(--exchange-good-text); }
.exchange-card .is-warning { border-color: #fde68a; background: var(--exchange-warn-bg); color: var(--exchange-warn-text); }
.exchange-card .data-list { margin: 16px 0; }
.exchange-card .data-list div { padding: 11px 0; border-color: var(--exchange-line); }
.exchange-card .data-list dt { color: var(--exchange-subtle); }
.exchange-card .data-list dd { color: var(--exchange-text); }
.exchange-card > section button,
.exchange-card .state-card button { min-height: 42px; padding: 9px 14px; border: 1px solid #cfd8e7; border-radius: 8px; background: #fff; color: #344054; cursor: pointer; font-weight: 800; }
.exchange-card > section button:disabled { cursor: not-allowed; opacity: .5; }
.exchange-card output { display: block; margin: 16px 0 10px; padding: 13px 14px; border: 1px dashed var(--exchange-border-strong); border-radius: 8px; background: var(--exchange-input-bg); color: var(--exchange-blue); font: 700 14px/1.5 var(--font-mono); overflow-wrap: anywhere; }
.exchange-card output[hidden] { display: none !important; }
.skeleton { border-radius: 8px; background: linear-gradient(90deg, var(--exchange-soft), rgba(37, 99, 235, .1), var(--exchange-soft)); background-size: 220% 100%; }
.toast { border-radius: 8px; }
.modal { border-radius: 8px; }
.modal-glyph,
.modal output { border-radius: 8px; }

html[data-theme="dark"] .exchange-page {
  --exchange-blue: #60a5fa;
  --exchange-purple: #2dd4bf;
  --exchange-green: #2dd4bf;
  --exchange-orange: #f1c46d;
  --exchange-red: #ff8794;
  --exchange-card: rgba(15, 23, 42, .88);
  --exchange-soft: rgba(30, 41, 59, .86);
  --exchange-input-bg: rgba(15, 23, 42, .92);
  --exchange-input-focus: rgba(15, 23, 42, .98);
  --exchange-border: rgba(148, 163, 184, .28);
  --exchange-border-strong: rgba(96, 165, 250, .68);
  --exchange-line: rgba(148, 163, 184, .2);
  --exchange-text: #f8fafc;
  --exchange-muted: #cbd5e1;
  --exchange-subtle: #94a3b8;
  --exchange-shadow: 0 20px 44px rgba(0, 0, 0, .32);
  --exchange-glow: 0 14px 30px rgba(96, 165, 250, .16);
  --exchange-good-bg: rgba(15, 118, 110, .18);
  --exchange-good-text: #5eead4;
  --exchange-warn-bg: rgba(183, 121, 31, .2);
  --exchange-warn-text: #f1c46d;
  --exchange-err-bg: rgba(220, 53, 69, .18);
  --exchange-err-text: #fda4af;
  --exchange-info-bg: rgba(37, 99, 235, .18);
  --exchange-info-text: #bfdbfe;
  background: linear-gradient(rgba(2, 6, 23, .98), rgba(15, 23, 42, .96) 54%, rgba(2, 6, 23, .98)), #020617;
}
html[data-theme="dark"] .exchange-page::before { opacity: .42; background-image: linear-gradient(rgba(148, 163, 184, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 163, 184, .06) 1px, transparent 1px); }
html[data-theme="dark"] .exchange-page::after { background: linear-gradient(120deg, rgba(96, 165, 250, .1), transparent 34%), linear-gradient(260deg, rgba(45, 212, 191, .09), transparent 38%); }
html[data-theme="dark"] .exchange-shell,
html[data-theme="dark"] .exchange-steps { border-color: rgba(148, 163, 184, .2); background: rgba(15, 23, 42, .72); }
html[data-theme="dark"] .exchange-tools .btn-ghost,
html[data-theme="dark"] .exchange-queue-bar,
html[data-theme="dark"] .exchange-tab.active,
html[data-theme="dark"] .exchange-input,
html[data-theme="dark"] .exchange-btn.secondary,
html[data-theme="dark"] .exchange-card > section button,
html[data-theme="dark"] .exchange-card .state-card button { background: rgba(15, 23, 42, .92); color: var(--exchange-muted); }
html[data-theme="dark"] .exchange-tabs,
html[data-theme="dark"] .exchange-card .state-card,
html[data-theme="dark"] .exchange-card > section:not([hidden]) { border-color: rgba(148, 163, 184, .2); background: rgba(30, 41, 59, .72); }
html[data-theme="dark"] .exchange-tab:hover { background: rgba(30, 41, 59, .9); }
html[data-theme="dark"] .exchange-tab.active { border-color: rgba(96, 165, 250, .58); color: #bfdbfe; }
html[data-theme="dark"] .exchange-eyebrow { color: #5eead4; }
html[data-theme="dark"] .exchange-tab:not(.active) { color: #cbd5e1; }
html[data-theme="dark"] .exchange-queue-count { color: #93c5fd; }
html[data-theme="dark"] .exchange-queue-state { color: #cbd5e1; }
html[data-theme="dark"] .exchange-header h1,
html[data-theme="dark"] .exchange-card .state-card h3,
html[data-theme="dark"] .exchange-card > section h3,
html[data-theme="dark"] .exchange-card .data-list dd { color: var(--exchange-text); }
html[data-theme="dark"] .exchange-header p,
html[data-theme="dark"] .exchange-hint,
html[data-theme="dark"] .exchange-form-group label { color: var(--exchange-muted); }
html[data-theme="dark"] .exchange-btn.primary { border-color: #3b82f6; background: #2563eb; color: #fff; }

@keyframes exchange-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes exchange-fade-up { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

@media (min-width: 861px) {
  html[lang="en"] .exchange-tab { height: 40px; min-height: 40px; padding: 3px 5px; font-size: 12px; line-height: 1.15; }
}

@media (min-width: 861px) and (max-width: 1000px) {
  html[lang="en"] .exchange-switchboard { grid-template-columns: 1fr; }
  html[lang="en"] .exchange-queue-bar { width: 100%; max-width: none; }
}

@media (max-width: 860px) {
  .exchange-switchboard { grid-template-columns: 1fr; }
  .exchange-tabs,
  .exchange-queue-bar { width: 100%; max-width: none; }
}

@media (max-width: 760px) {
  .exchange-page { padding: 12px 12px 28px; }
  .exchange-shell { width: 100%; max-width: 100%; padding: 14px; }
  .exchange-header { flex-direction: column; align-items: flex-start; gap: 12px; text-align: left; }
  .exchange-title-block { align-items: flex-start; max-width: 100%; }
  .exchange-brand-mark { width: 40px; height: 40px; }
  .exchange-header h1 { font-size: 24px; overflow-wrap: anywhere; }
  .exchange-tools { justify-content: flex-start; width: 100%; padding-left: 54px; }
  .exchange-tools .btn-ghost { width: 38px; min-width: 38px; min-height: 36px; padding: 7px; }
  .exchange-tools .tutorial-link { width: auto; padding-inline: 11px; }
  .exchange-tabs { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); grid-template-columns: none; width: 100%; max-width: 100%; min-width: 0; overflow: visible; }
  .exchange-tab { width: 100%; min-width: 0; padding: 7px 8px; font-size: 13px; white-space: normal; }
  .exchange-queue-bar { justify-content: flex-start; text-align: left; }
  .exchange-steps { display: grid; grid-template-columns: 1fr; align-items: stretch; padding: 10px; }
  .exchange-step,
  .exchange-step:last-child { width: 100%; }
  .exchange-step-line { display: none; }
  .exchange-card { padding: 16px; }
  #recharge-view .exchange-card,
  #lookup-view .exchange-card,
  #subscription-view .exchange-card,
  #replacement-view .exchange-card,
  #cancellation-view .exchange-card { min-height: 0; }
  .exchange-buttons,
  .exchange-buttons.split { flex-direction: column; }
  .exchange-card .data-list div { align-items: flex-start; flex-direction: column; gap: 4px; }
  .exchange-card .data-list dd { width: 100%; text-align: left; }
}

@media (max-width: 360px) {
  html[lang="en"] .exchange-queue-bar { min-width: 0; white-space: normal; flex-wrap: wrap; }
  html[lang="en"] .exchange-queue-main { min-width: 0; white-space: normal; overflow-wrap: anywhere; }
  html[lang="en"] .exchange-queue-state { flex: 1 0 100%; margin-left: 0; white-space: normal; }
  html[lang="en"] .exchange-tabs { grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  html[lang="en"] .exchange-tab:last-child { grid-column: 1 / -1; }
}

/* Reference-site descriptive alert used consistently by every workflow. */
.exchange-card > .inline-error,
.exchange-card > section.inline-error:not([hidden]),
.exchange-switchboard > .inline-error {
  width: 100%;
  margin: 0 0 22px;
  padding: 16px 18px 17px;
  overflow: hidden;
  border: 1px solid #ffccc7;
  border-top: 4px solid #ff4d4f;
  border-radius: 8px;
  background: #fff2f0;
  color: #cf1322;
  box-shadow: none;
}
.exchange-switchboard > .inline-error { grid-column: 1 / -1; margin: 4px 0 0; }
.inline-error strong {
  display: block;
  margin-bottom: 6px;
  color: inherit;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
}
.exchange-card > .inline-error p,
.exchange-switchboard > .inline-error p {
  margin: 0;
  color: #cf1322;
  font-size: 15px;
  line-height: 1.6;
}
html[data-theme="dark"] .exchange-card > .inline-error,
html[data-theme="dark"] .exchange-switchboard > .inline-error,
html[data-theme="dark"] .inline-error {
  border-color: rgba(255, 135, 148, .42);
  border-top-color: #ff8794;
  background: rgba(127, 29, 29, .28);
  color: #fecdd3;
}
html[data-theme="dark"] .exchange-card > .inline-error p,
html[data-theme="dark"] .exchange-switchboard > .inline-error p,
html[data-theme="dark"] .inline-error p { color: #fda4af; }

@media (max-width: 760px) {
  .exchange-card > .inline-error,
  .exchange-switchboard > .inline-error {
    max-width: calc(100vw - 56px);
    padding: 14px 15px 15px;
  }
}