:root {
  color-scheme: light dark;
  --bg: #f4f6fb;
  --surface: rgba(255,255,255,.88);
  --surface-solid: #fff;
  --surface-muted: #eef1f7;
  --text: #151820;
  --muted: #687083;
  --faint: #9299a9;
  --line: rgba(24,31,47,.09);
  --accent: #315efb;
  --accent-strong: #2347d7;
  --accent-soft: #e8edff;
  --success: #16895b;
  --success-soft: #e6f7f0;
  --warning: #aa6b0b;
  --warning-soft: #fff3d7;
  --danger: #d33d4c;
  --danger-soft: #ffe9ec;
  --shadow: 0 20px 55px rgba(31,40,74,.08), 0 2px 8px rgba(31,40,74,.04);
  --radius-xl: 26px;
  --radius-lg: 19px;
  --radius-md: 13px;
  --sidebar: 246px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "PingFang HK", "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #0b0d12;
    --surface: rgba(24,27,35,.88);
    --surface-solid: #181b23;
    --surface-muted: #222631;
    --text: #f4f6fb;
    --muted: #a8afbf;
    --faint: #747c8e;
    --line: rgba(255,255,255,.09);
    --accent: #6f91ff;
    --accent-strong: #91a9ff;
    --accent-soft: rgba(74,105,224,.18);
    --success: #55d49b;
    --success-soft: rgba(34,150,101,.16);
    --warning: #f2bc5c;
    --warning-soft: rgba(190,124,24,.16);
    --danger: #ff7e8b;
    --danger-soft: rgba(210,58,75,.16);
    --shadow: 0 24px 70px rgba(0,0,0,.28), 0 2px 8px rgba(0,0,0,.18);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b0d12;
  --surface: rgba(24,27,35,.88);
  --surface-solid: #181b23;
  --surface-muted: #222631;
  --text: #f4f6fb;
  --muted: #a8afbf;
  --faint: #747c8e;
  --line: rgba(255,255,255,.09);
  --accent: #6f91ff;
  --accent-strong: #91a9ff;
  --accent-soft: rgba(74,105,224,.18);
  --success: #55d49b;
  --success-soft: rgba(34,150,101,.16);
  --warning: #f2bc5c;
  --warning-soft: rgba(190,124,24,.16);
  --danger: #ff7e8b;
  --danger-soft: rgba(210,58,75,.16);
  --shadow: 0 24px 70px rgba(0,0,0,.28), 0 2px 8px rgba(0,0,0,.18);
}
:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--text); font-family: var(--font); -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; }
button, a, input, textarea, select { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
code { font-family: "SFMono-Regular", Consolas, monospace; font-size: .9em; }
input, textarea, select {
  width: 100%; border: 1px solid var(--line); color: var(--text); background: var(--surface-muted); border-radius: var(--radius-md); outline: 0; transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
input, select { min-height: 46px; padding: 0 13px; }
textarea { resize: vertical; padding: 13px; line-height: 1.55; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent); background: var(--surface-solid); }
input[type="checkbox"] { width: auto; min-height: 0; padding: 0; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.app-shell { min-height: 100vh; }
.sidebar {
  position: fixed; inset: 0 auto 0 0; z-index: 30; width: var(--sidebar); padding: 24px 16px 18px; background: color-mix(in srgb, var(--surface-solid) 93%, transparent); border-right: 1px solid var(--line); backdrop-filter: blur(24px) saturate(150%); display: flex; flex-direction: column;
}
.brand { display: flex; align-items: center; gap: 11px; padding: 0 8px; font-weight: 720; letter-spacing: -.02em; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; color: #fff; border-radius: 11px; background: linear-gradient(145deg,#5b7cff,#274dda 68%,#1637a9); box-shadow: 0 8px 18px rgba(49,94,251,.24); font-weight: 800; }
.nav-list { display: grid; gap: 5px; margin-top: 42px; }
.nav-item { min-height: 44px; display: flex; align-items: center; gap: 12px; padding: 0 12px; border-radius: 12px; color: var(--muted); font-size: 14px; font-weight: 610; transition: color .18s ease, background .18s ease, transform .18s ease; }
.nav-item:hover { color: var(--text); background: var(--surface-muted); transform: translateX(2px); }
.nav-item.active { color: var(--accent); background: var(--accent-soft); }
.nav-symbol { width: 20px; text-align: center; font-size: 17px; }
.sidebar-footer { margin-top: auto; display: grid; gap: 10px; }
.account-chip { display: flex; gap: 10px; align-items: center; padding: 10px 8px; }
.avatar, .device-avatar { display: grid; place-items: center; border-radius: 50%; background: linear-gradient(145deg,var(--accent-soft),color-mix(in srgb,var(--accent-soft) 65%,var(--surface-muted))); color: var(--accent); font-weight: 750; flex: none; }
.avatar { width: 35px; height: 35px; }
.account-copy { display: grid; min-width: 0; }
.account-copy strong { overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
.account-copy small { color: var(--muted); font-size: 11px; margin-top: 2px; }
.main { min-height: 100vh; margin-left: var(--sidebar); padding: 0 38px 28px; display: flex; flex-direction: column; }
.topbar { height: 70px; display: flex; align-items: center; gap: 8px; position: sticky; top: 0; z-index: 20; background: color-mix(in srgb,var(--bg) 82%,transparent); backdrop-filter: blur(20px) saturate(150%); }
.topbar-spacer { flex: 1; }
.locale-form { width: auto; }
.locale-form select { width: auto; min-width: 140px; height: 38px; min-height: 38px; padding-right: 34px; background: var(--surface); }
.theme-toggle { width: 38px; height: 38px; display: inline-grid; place-items: center; flex: none; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); background: var(--surface); cursor: pointer; font-size: 17px; transition: color .18s ease, background .18s ease, transform .18s ease; }
.theme-toggle:hover { color: var(--text); background: var(--surface-muted); transform: translateY(-1px); }
.theme-toggle:active { transform: scale(.96); }
.mobile-menu { display: none; width: 40px; height: 40px; border: 1px solid var(--line); background: var(--surface); border-radius: 11px; }
.sidebar-scrim { display: none; }

.hero, .page-heading { max-width: 1320px; margin: 0 auto; }
.compact-hero { padding: 36px 0 30px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); text-transform: uppercase; letter-spacing: .13em; font-weight: 750; font-size: 11px; }
h1,h2,h3,p { margin-top: 0; }
h1 { margin-bottom: 12px; font-size: clamp(32px,4vw,52px); line-height: 1.04; letter-spacing: -.045em; max-width: 880px; }
.compact-hero > p:last-child, .page-heading p { max-width: 720px; color: var(--muted); line-height: 1.6; }
.page-heading { min-height: 190px; padding: 45px 0 30px; display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; }
.page-heading h1 { margin-bottom: 8px; font-size: clamp(32px,4vw,46px); }
.back-link { display: inline-block; margin-bottom: 16px; color: var(--accent); font-size: 13px; font-weight: 650; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-xl); box-shadow: var(--shadow); backdrop-filter: blur(20px) saturate(130%); }
.send-layout { max-width: 1320px; margin: 0 auto; display: grid; grid-template-columns: minmax(330px, .78fr) minmax(460px, 1.22fr); gap: 20px; align-items: start; }
.device-panel { padding: 22px 18px 16px; position: sticky; top: 90px; max-height: calc(100vh - 116px); display: flex; flex-direction: column; }
.composer-panel { padding: 28px; }
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.panel-header h2 { margin: 0; font-size: 21px; letter-spacing: -.025em; }
.panel-kicker { margin: 0 0 4px; font-size: 11px; font-weight: 720; color: var(--muted); text-transform: uppercase; letter-spacing: .11em; }
.device-total { display: grid; place-items: center; min-width: 38px; height: 30px; padding: 0 10px; border-radius: 999px; background: var(--surface-muted); color: var(--muted); font-size: 12px; font-weight: 700; }
.composer-glyph { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; background: var(--accent-soft); color: var(--accent); font-size: 20px; }
.search-field { position: relative; display: flex; align-items: center; }
.search-field > span { position: absolute; left: 13px; color: var(--faint); font-size: 18px; z-index: 1; }
.search-field input { padding-left: 39px; }
.selection-tools { display: flex; gap: 16px; padding: 13px 3px 10px; }
.text-button { border: 0; padding: 0; background: transparent; color: var(--accent); font-size: 12px; font-weight: 650; cursor: pointer; }
.text-button.danger { color: var(--danger); }
.device-list { overflow: auto; overscroll-behavior: contain; padding-right: 3px; }
.device-row { position: relative; display: flex; align-items: center; gap: 11px; min-height: 77px; padding: 10px 9px; border-radius: 15px; cursor: pointer; transition: background .18s ease, transform .18s ease; }
.device-row:hover { background: var(--surface-muted); }
.device-row:active { transform: scale(.99); }
.device-row > input { position: absolute; opacity: 0; pointer-events: none; }
.device-check { width: 21px; height: 21px; display: grid; place-items: center; border: 1.5px solid color-mix(in srgb,var(--muted) 55%,transparent); border-radius: 7px; color: transparent; font-size: 12px; transition: all .18s ease; flex: none; }
.device-row input:checked + .device-check { color: white; border-color: var(--accent); background: var(--accent); transform: scale(1.04); }
.device-avatar { width: 39px; height: 39px; }
.device-copy { min-width: 0; display: grid; gap: 2px; }
.device-copy strong { font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.device-copy small { color: var(--muted); font-size: 10px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.device-copy code { font-size: 10px; }

.quick-section { margin-bottom: 22px; }
.quick-section h3 { margin-bottom: 10px; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.template-chip { display: inline-flex; align-items: center; gap: 7px; min-height: 38px; padding: 0 13px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface-muted); cursor: pointer; font-size: 12px; font-weight: 620; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.template-chip:hover { border-color: color-mix(in srgb,var(--accent) 35%,var(--line)); background: var(--accent-soft); transform: translateY(-1px); }
.recent-list { display: flex; gap: 8px; overflow-x: auto; padding: 1px 1px 8px; scroll-snap-type: x proximity; }
.recent-item { flex: 0 0 210px; scroll-snap-align: start; display: grid; gap: 4px; text-align: left; border: 1px solid var(--line); border-radius: 15px; background: transparent; padding: 12px; cursor: pointer; }
.recent-item:hover { background: var(--surface-muted); }
.recent-item strong, .recent-item span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.recent-item strong { font-size: 12px; }.recent-item span,.recent-item small { color: var(--muted); font-size: 10px; }
.field-group { margin-top: 17px; }
.field-group > label { display: block; margin-bottom: 7px; font-size: 13px; font-weight: 650; }
.counted-field { position: relative; }
.counted-field > span { position: absolute; right: 11px; top: 50%; transform: translateY(-50%); color: var(--faint); font-size: 10px; pointer-events: none; }
.counted-field input { padding-right: 58px; }
.textarea-field > span { top: auto; bottom: 9px; transform: none; }
.textarea-field textarea { padding-bottom: 30px; }
.composer-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 22px; }

.button { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 15px; border: 1px solid transparent; border-radius: 12px; cursor: pointer; font-weight: 670; font-size: 13px; transition: transform .17s ease, box-shadow .17s ease, background .17s ease, opacity .17s ease; }
.button:hover { transform: translateY(-1px); }.button:active { transform: scale(.98); }.button:disabled { cursor: wait; opacity: .55; }
.button-primary { color: white; background: linear-gradient(145deg,#5778ff,var(--accent-strong)); box-shadow: 0 8px 20px rgba(49,94,251,.22); }
.button-primary:hover { box-shadow: 0 11px 26px rgba(49,94,251,.28); }
.button-secondary { background: var(--surface-muted); border-color: var(--line); }
.button-quiet { background: transparent; color: var(--muted); border-color: var(--line); }
.button-large { min-height: 48px; padding: 0 19px; border-radius: 14px; }
.full { width: 100%; }
.button.loading::before { content: ""; width: 13px; height: 13px; border: 2px solid rgba(255,255,255,.45); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.flash { max-width: 1320px; margin: 10px auto 4px; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 13px; font-size: 13px; font-weight: 590; }
.flash > span { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; font-weight: 800; }
.flash.success { color: var(--success); background: var(--success-soft); }.flash.success > span { background: color-mix(in srgb,var(--success) 18%,transparent); }
.flash.error { color: var(--danger); background: var(--danger-soft); }.flash.error > span { background: color-mix(in srgb,var(--danger) 18%,transparent); }

.filter-bar { display: flex; gap: 10px; padding: 20px; border-bottom: 1px solid var(--line); }.filter-bar .grow { flex: 1; }.filter-bar select { width: 180px; }
.table-panel { overflow: hidden; }.responsive-table { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { padding: 13px 18px; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; text-align: left; background: color-mix(in srgb,var(--surface-muted) 60%,transparent); }
td { padding: 17px 18px; border-top: 1px solid var(--line); vertical-align: middle; }
td strong, td small { display: block; max-width: 440px; }td small { margin-top: 4px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-link { color: var(--accent); white-space: nowrap; font-weight: 650; font-size: 12px; }
.status-badge { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-size: 10px; font-weight: 750; white-space: nowrap; }
.status-badge.sent { color: var(--success); background: var(--success-soft); }.status-badge.pending { color: var(--accent); background: var(--accent-soft); }.status-badge.partial { color: var(--warning); background: var(--warning-soft); }.status-badge.failed { color: var(--danger); background: var(--danger-soft); }
.metric-grid { max-width: 1320px; margin: -7px auto 20px; display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.metric { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }.metric span { display: block; font-size: 32px; font-weight: 760; letter-spacing: -.04em; }.metric small { color: var(--muted); }.metric.success span { color: var(--success); }.metric.failure span { color: var(--danger); }

.settings-grid { max-width: 1320px; margin: 0 auto; display: grid; grid-template-columns: minmax(300px,.72fr) minmax(480px,1.28fr); gap: 20px; align-items: start; }.settings-grid > .panel { padding: 25px; }.settings-grid h2 { font-size: 20px; }
.stack-form { display: grid; gap: 15px; }.stack-form label { display: grid; gap: 7px; }.stack-form label > span { color: var(--muted); font-size: 12px; font-weight: 650; }
.inline-form { display: inline; }
.muted-dash, .form-hint { color: var(--muted); }
.form-hint { margin: -4px 0 0; font-size: 11px; line-height: 1.5; }
.account-layout { width: 100%; max-width: 980px; margin: 0 auto; display: grid; grid-template-columns: minmax(260px,.72fr) minmax(420px,1.28fr); gap: 20px; align-items: start; }
.account-layout > .panel { padding: 26px; }
.account-summary { display: flex; align-items: center; gap: 17px; }
.account-summary h2 { margin: 0 0 5px; font-size: 21px; }
.account-summary p { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.account-avatar-large { width: 62px; height: 62px; display: grid; place-items: center; flex: none; border-radius: 20px; color: var(--accent); background: var(--accent-soft); font-size: 24px; font-weight: 780; }
.account-password h2 { margin-bottom: 22px; }
.template-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }.template-card { padding: 20px; }.template-card > div:first-child { display: flex; justify-content: space-between; align-items: center; }.template-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--accent-soft); color: var(--accent); }.template-card small,.template-card p { color: var(--muted); }.template-card h3 { margin: 15px 0 8px; }.template-card strong { display: block; font-size: 13px; }.template-card p { font-size: 12px; line-height: 1.55; min-height: 38px; margin: 6px 0 16px; }
.empty-state { min-height: 180px; display: grid; place-content: center; justify-items: center; color: var(--muted); text-align: center; }.empty-state > span { font-size: 28px; color: var(--faint); }.empty-state p { margin: 10px 0 0; font-size: 13px; }.empty-state.large { min-height: 330px; }

.login-page { position: relative; min-height: 100vh; overflow: hidden; display: flex; flex-direction: column; align-items: center; padding: 28px; }
.login-ambient { position: absolute; border-radius: 50%; filter: blur(8px); opacity: .55; pointer-events: none; }.ambient-one { width: 480px; height: 480px; top: -180px; right: -100px; background: radial-gradient(circle,#b9c8ff,transparent 68%); }.ambient-two { width: 420px; height: 420px; bottom: -190px; left: -90px; background: radial-gradient(circle,#ffe0a8,transparent 68%); }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .login-ambient { opacity: .12; } }
:root[data-theme="dark"] .login-ambient { opacity: .12; }
.login-card { position: relative; width: min(100%,430px); margin: auto 0 0; padding: 34px; border: 1px solid var(--line); border-radius: 30px; background: var(--surface); box-shadow: 0 30px 100px rgba(25,37,78,.14); backdrop-filter: blur(30px) saturate(140%); }
.login-brand { padding: 0; }.login-copy { margin: 43px 0 25px; }.login-copy h1 { font-size: 37px; }.login-copy p:last-child { color: var(--muted); line-height: 1.55; }
.login-tools { margin-top: 20px; display: flex; align-items: center; justify-content: center; gap: 7px; }.login-locale { margin: 0; text-align: center; }.login-locale select { border: 0; background: transparent; color: var(--muted); }
.error-page { min-height: 100vh; display: flex; flex-direction: column; padding: 30px; }.error-content { flex: 1; display: grid; place-content: center; justify-items: center; gap: 22px; text-align: center; }.error-orb { width: 100px; height: 100px; display: grid; place-items: center; border-radius: 30px; color: var(--accent); background: var(--accent-soft); font-size: 28px; font-weight: 800; }.error-page h1 { font-size: 24px; max-width: 600px; }
.error-tools { display: flex; justify-content: flex-end; gap: 8px; }.error-tools .locale-form select { background: var(--surface); }

.site-footer { width: 100%; max-width: 1320px; margin: auto auto 0; padding: 48px 12px 2px; position: relative; z-index: 1; color: var(--muted); text-align: center; font-size: 11px; line-height: 1.6; }
.site-footer p { margin: 0; }.site-footer p + p { margin-top: 5px; }
.footer-heart { color: #ff4d67; font-size: 13px; }
.beian-links { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 6px; }
.beian-links a { display: inline-flex; align-items: center; gap: 5px; transition: color .18s ease; }.beian-links a:hover { color: var(--text); }
.beian-links img { width: 16px; height: 16px; object-fit: contain; }
.beian-separator { color: var(--faint); }
.login-page .site-footer { max-width: 760px; padding-top: 28px; }
.error-page .site-footer { padding-top: 28px; }

@media (max-width: 1050px) {
  .send-layout { grid-template-columns: 1fr; }.device-panel { position: relative; top: 0; max-height: 600px; }.settings-grid, .account-layout { grid-template-columns: 1fr; }
}
@media (max-width: 780px) {
  :root { --sidebar: 264px; --radius-xl: 21px; }
  .sidebar { transform: translateX(-105%); transition: transform .28s cubic-bezier(.2,.8,.2,1); box-shadow: 25px 0 70px rgba(0,0,0,.18); }.sidebar-open .sidebar { transform: translateX(0); }
  .sidebar-scrim { position: fixed; inset: 0; z-index: 25; background: rgba(0,0,0,.32); backdrop-filter: blur(2px); }.sidebar-open .sidebar-scrim { display: block; }
  .main { margin-left: 0; padding: 0 16px 20px; }.topbar { height: 62px; }.mobile-menu { display: block; }
  .compact-hero { padding: 27px 2px 22px; }.compact-hero h1 { font-size: 35px; }
  .composer-panel { padding: 21px 17px; }.device-panel { padding: 18px 13px 12px; }.composer-footer { align-items: stretch; flex-direction: column-reverse; }.composer-footer .button { width: 100%; }
  .page-heading { min-height: 160px; padding: 30px 2px 22px; align-items: flex-start; flex-direction: column; }.filter-bar { flex-wrap: wrap; }.filter-bar .grow { flex-basis: 100%; }.filter-bar select { flex: 1; }
  .metric-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }.metric { padding: 14px; }.metric span { font-size: 25px; }
  .template-grid { grid-template-columns: 1fr; }.settings-grid > .panel { padding: 20px 17px; }
  .login-page { padding: 18px 16px; }.login-card { padding: 27px 22px; }.login-copy { margin-top: 34px; }
  .site-footer { padding-left: 0; padding-right: 0; }.beian-links { gap: 3px 10px; }
  th,td { padding-left: 13px; padding-right: 13px; }
}
@media (max-width: 430px) {
  .locale-form select { min-width: 126px; font-size: 12px; }.selection-tools { gap: 13px; }.recent-item { flex-basis: 190px; }.metric small { font-size: 9px; }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}