:root {
  color-scheme: light;
  --bg: #f3f2ee; --surface: #fffefc; --ink: #17191c; --muted: #686d77;
  --line: #dcdad4; --subtle: #eae9e3; --action: #17191c; --action-ink: #fffefc;
  --green: #146d4b; --green-bg: #e4eee6; --danger: #ae3e45; --danger-bg: #f7e8e6;
  --focus: #487bff; --radius: 24px;
  --accent: #3464e6; --accent-ink: #ffffff; --accent-soft: #e8efff; --accent-line: #c2d3fa;
  font-family: "HarmonyOS Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-synthesis: none; -webkit-font-smoothing: antialiased; scroll-behavior: smooth;
}
:root[data-theme="dark"] {
  color-scheme: dark; --bg: #0e1013; --surface: #191c21; --ink: #f6f4ef; --muted: #a1a6ad;
  --line: #303640; --subtle: #242930; --action: #f6f4ef; --action-ink: #17191c;
  --green: #8ed6ae; --green-bg: #1b352a; --danger: #f3a3a6; --danger-bg: #38242a; --focus: #82a5ff;
  --accent: #8aaeff; --accent-ink: #111a2d; --accent-soft: #1c2c4c; --accent-line: #354f7d;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 14px; line-height: 1.6; }
button, input { font: inherit; }
button, a, input { -webkit-tap-highlight-color: transparent; }
button { color: inherit; cursor: pointer; }
button:disabled { cursor: default; opacity: .38; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--green); }
button:focus-visible, a:focus-visible, input:focus-visible, [tabindex="0"]:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
[hidden] { display: none !important; }
svg { flex-shrink: 0; }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.shell { width: min(1120px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 10; padding: 10px 20px; background: var(--action); color: var(--action-ink); transform: translateY(-200%); border-radius: 99px; }
.skip-link:focus { transform: translateY(0); }
.site-header { height: 100px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 11px; align-items: center; font-size: 20px; font-weight: 750; letter-spacing: -.5px; }
.brand-mark { display: grid; place-items: center; width: 39px; height: 39px; background: var(--action); color: var(--action-ink); border-radius: 13px; }
.brand-mark .icon { width: 25px; height: 25px; }
.brand-secondary { font-size: 17px; font-weight: 500; margin-left: 3px; }
.header-actions { display: flex; align-items: center; gap: 28px; }
.about-link { font-size: 13px; color: var(--muted); }
.icon-button { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: transparent; transition: background 150ms, border-color 150ms, transform 150ms; }
.icon-button:hover:not(:disabled) { background: var(--subtle); border-color: var(--muted); }
.icon-button:active:not(:disabled) { transform: scale(.94); }
.theme-sun { display: none; }
[data-theme="dark"] .theme-moon { display: none; }
[data-theme="dark"] .theme-sun { display: block; }
.hero { padding: 76px 0 68px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.eyebrow { margin: 0 0 23px; color: var(--accent); font-size: 12px; font-weight: 600; letter-spacing: .08em; display: flex; align-items: center; gap: 9px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
h1 { margin: 0; font-size: clamp(38px, 4.6vw, 58px); line-height: 1.22; letter-spacing: -.055em; font-weight: 750; }
h1 span { color: var(--accent); font-weight: 500; }
.hero-description { margin: 23px 0 26px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.mobile-break { display: none; }
.button { min-height: 46px; border: 1px solid var(--line); border-radius: 999px; padding: 10px 21px; display: inline-flex; align-items: center; justify-content: center; gap: 15px; background: transparent; font-size: 13px; font-weight: 600; white-space: nowrap; transition: transform 150ms, opacity 150ms, background 150ms; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:active:not(:disabled) { transform: translateY(0) scale(.98); }
.button-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button-primary:hover:not(:disabled) { opacity: .86; }
.hero-button { padding-inline: 24px; }
.expiry-note { width: 198px; min-height: 237px; flex-shrink: 0; border: 1px solid var(--accent-line); background: var(--accent-soft); border-radius: 26px; padding: 25px 28px 20px; position: relative; transform: rotate(4deg); }
.expiry-number { display: block; color: var(--accent); font-size: 75px; line-height: 1.2; letter-spacing: -.085em; font-weight: 500; font-family: "Segoe UI", system-ui, sans-serif; font-variant-numeric: tabular-nums; }
.expiry-number span { font-size: 26px; letter-spacing: -.03em; margin-left: 6px; }
.expiry-rule { display: block; border-top: 1px dashed var(--accent-line); margin: 13px -28px 17px; }
.expiry-note p { margin: 0; color: var(--muted); font-size: 12px; }
.expiry-note strong { color: var(--ink); font-weight: 500; font-size: 14px; }
.expiry-note > .icon { position: absolute; right: 27px; bottom: 27px; color: var(--muted); }
.workbench { scroll-margin-top: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: clip; }
.workbench-top { display: flex; gap: 16px; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--line); }
.segmented { display: inline-flex; align-items: center; position: relative; padding: 4px; background: var(--subtle); border-radius: 999px; width: max-content; max-width: 100%; }
.segmented-indicator { position: absolute; top: 4px; bottom: 4px; left: 0; width: var(--pill-width, 132px); transform: translateX(var(--pill-x, 4px)); border-radius: 999px; background: var(--accent); transition: transform 220ms cubic-bezier(.2,.8,.2,1), width 220ms; }
.tab { display: inline-flex; gap: 8px; align-items: center; justify-content: center; position: relative; border: 0; border-radius: 999px; background: transparent; padding: 9px 16px; color: var(--muted); font-size: 12px; font-weight: 550; white-space: nowrap; transition: color 150ms; }
.tab[aria-selected="true"] { color: var(--accent-ink); }
.tab .icon { width: 17px; height: 17px; }
.workbench-caption { font-size: 11px; color: var(--muted); }
.tab-panel { padding: 29px 28px 22px; min-height: 362px; }
.pool-heading { display: flex; justify-content: space-between; gap: 20px; align-items: center; margin-bottom: 24px; }
h2 { font-size: 18px; letter-spacing: -.02em; font-weight: 650; line-height: 1.4; margin: 0; }
.pool-heading h2 { display: flex; align-items: center; gap: 10px; }
.pool-heading p { margin: 7px 0 0; color: var(--muted); font-size: 12px; }
.count-badge { background: var(--green-bg); color: var(--green); border-radius: 999px; font-size: 11px; font-weight: 600; padding: 3px 10px; min-width: 30px; text-align: center; }
.refresh-button { width: 34px; height: 34px; border-color: transparent; }
.refresh-button.is-loading .icon { animation: spin 900ms linear infinite; }
.code-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.ticket { display: flex; flex-direction: column; align-items: flex-start; position: relative; min-width: 0; min-height: 102px; padding: 20px 16px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; transition: border-color 150ms, background 150ms, transform 150ms; text-align: left; }
.ticket:hover { border-color: var(--accent); background: var(--accent-soft); transform: translateY(-2px); }
.ticket-code { color: var(--ink); font: 600 20px/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace; letter-spacing: .055em; user-select: all; }
.ticket-meta { display: flex; align-items: center; gap: 5px; font-size: 10px; color: var(--muted); margin-top: 14px; }
.ticket-copy { width: 13px; height: 13px; }
.ticket.is-copied { border-color: var(--green); background: var(--green-bg); }
.ticket.is-copied .ticket-meta { color: var(--green); }
.ticket-skeleton { min-height: 102px; border-radius: 16px; border: 1px solid var(--line); background: var(--bg); opacity: .6; animation: breathe 1.3s ease-in-out infinite alternate; }
.pool-state { min-height: 215px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 20px 12px 30px; }
.state-icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 18px; background: var(--subtle); margin-bottom: 18px; color: var(--muted); }
.state-icon .icon { width: 26px; height: 26px; }
.pool-state h3 { font-size: 16px; font-weight: 600; margin: 0; }
.pool-state p { font-size: 12px; color: var(--muted); margin: 8px 0 19px; }
.pool-state .button { min-height: 38px; font-size: 12px; padding: 8px 18px; }
.pool-footnote { display: flex; align-items: flex-start; justify-content: center; gap: 7px; margin: 24px 0 0; font-size: 10px; color: var(--muted); }
.pool-footnote .icon { width: 13px; height: 13px; margin-top: 2px; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 24px; }
.pagination .icon-button { width: 32px; height: 32px; }
.previous-page .icon { transform: rotate(180deg); }
.pagination span { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.form-panel { padding-block: 38px 44px; }
.form-content { max-width: 540px; margin-inline: auto; }
.section-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--accent-line); background: var(--accent-soft); color: var(--accent); border-radius: 14px; margin-bottom: 18px; }
.form-content h2 { font-size: 23px; }
.form-description { margin: 8px 0 27px; color: var(--muted); font-size: 12px; }
form label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 10px; }
.input-row { display: flex; gap: 10px; align-items: center; }
.code-input { width: 100%; min-width: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); color: var(--ink); height: 49px; padding: 0 15px; font: 500 18px/1 ui-monospace, Consolas, monospace; letter-spacing: .04em; outline-offset: 3px; }
.code-input::placeholder { font: 12px "Microsoft YaHei", "PingFang SC", sans-serif; letter-spacing: 0; color: var(--muted); opacity: 1; }
.code-input[aria-invalid="true"] { border-color: var(--danger); }
.input-row .button { min-height: 49px; gap: 10px; padding-inline: 20px; }
.field-hint { font-size: 10px; color: var(--muted); margin: 10px 0 0; }
.sharing-note { margin-top: 30px; border-top: 1px solid var(--line); padding-top: 18px; }
.sharing-note strong { font-size: 11px; font-weight: 550; }
.sharing-note p { font-size: 11px; color: var(--muted); line-height: 1.8; margin: 6px 0 0; }
.form-result { margin-top: 23px; background: var(--bg); border: 1px solid var(--line); border-radius: 17px; padding: 20px; }
.form-result.is-success { background: var(--green-bg); border-color: var(--green-bg); }
.form-result.is-error { background: var(--danger-bg); border-color: var(--danger-bg); }
.result-title { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; margin: 0; }
.is-success .result-title { color: var(--green); }
.is-error .result-title { color: var(--danger); }
.result-title .icon { width: 17px; height: 17px; }
.result-description { color: var(--muted); font-size: 12px; line-height: 1.8; margin: 8px 0 0; }
.result-code { display: block; font: 600 28px/1.4 ui-monospace, Consolas, monospace; letter-spacing: .08em; margin-top: 14px; user-select: all; }
.result-details { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 10px; color: var(--muted); font-size: 11px; }
.result-action { border: 0; background: transparent; padding: 0; margin-top: 14px; color: var(--green); font-size: 12px; text-decoration: underline; text-underline-offset: 4px; }
.noscript-note { padding: 20px; text-align: center; }
.about-section { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; padding: 47px 4px 43px; }
.about-section h2 { font-size: 15px; font-weight: 500; }
.about-section p { color: var(--muted); font-size: 11px; line-height: 1.9; margin: 0 0 5px; }
.site-footer { min-height: 77px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.footer-dot { opacity: .5; margin-inline: 8px; }
.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); z-index: 20; max-width: calc(100% - 32px); border-radius: 999px; padding: 12px 23px; background: var(--action); color: var(--action-ink); box-shadow: 0 6px 30px #00000012; font-size: 12px; text-align: center; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { to { opacity: .25; } }
@media (min-width: 1440px) { .hero { padding-block: 90px 80px; } }
@media (max-width: 1000px) { .code-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } .expiry-note { margin-right: 10px; } .workbench-caption { display: none; } }
@media (max-width: 680px) {
  .shell { width: calc(100% - 40px); } .site-header { height: 78px; } .brand { font-size: 18px; } .brand-secondary { font-size: 15px; }
  .header-actions { gap: 18px; } .about-link { font-size: 11px; } .theme-toggle { width: 35px; height: 35px; }
  .hero { padding-block: 44px 38px; gap: 12px; } h1 { font-size: clamp(31px, 6.5vw, 41px); }
  .eyebrow { font-size: 10px; margin-bottom: 19px; letter-spacing: .02em; }
  .hero-description { font-size: 12px; margin: 18px 0 23px; } .mobile-break { display: block; }
  .hero-button { font-size: 12px; min-height: 42px; padding-inline: 18px; gap: 11px; }
  .expiry-note { width: 111px; min-height: 153px; padding: 16px; margin-right: 4px; border-radius: 20px; }
  .expiry-number { font-size: 45px; } .expiry-number span { font-size: 19px; margin-left: 4px; }
  .expiry-rule { margin: 10px -16px 10px; } .expiry-note p { font-size: 9px; } .expiry-note strong { font-size: 11px; } .expiry-note > .icon { width: 15px; height: 15px; right: 15px; bottom: 20px; }
  .workbench { border-radius: 22px; } .workbench-top { padding: 15px 16px; } .tab { padding: 9px 13px; font-size: 11px; gap: 6px; } .tab .icon { width: 15px; height: 15px; }
  .tab-panel { padding: 23px 18px 19px; } .pool-heading { margin-bottom: 19px; } .pool-heading h2 { font-size: 16px; } .pool-heading p { font-size: 10px; }
  .code-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; } .ticket { min-height: 93px; padding: 17px 13px 13px; border-radius: 14px; } .ticket-code { font-size: 18px; letter-spacing: .03em; } .ticket-meta { font-size: 9px; margin-top: 13px; }
  .pool-footnote { text-align: left; justify-content: flex-start; font-size: 9px; line-height: 1.8; } .pool-footnote .icon { margin-top: 3px; }
  .form-panel { padding-block: 28px 32px; } .form-content h2 { font-size: 21px; } .input-row { gap: 8px; } .input-row .button { padding-inline: 15px; font-size: 11px; gap: 7px; } .input-row .button .icon { width: 16px; }
  .about-section { grid-template-columns: 1fr; gap: 15px; padding: 32px 2px 30px; } .about-section h2 { font-size: 14px; } .about-section p { font-size: 10px; } .site-footer { min-height: 70px; font-size: 9px; }
}
@media (max-width: 480px) { .code-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .tab { padding-inline: 11px; } .ticket-code { font-size: 21px; } .ticket-meta { font-size: 10px; } .ticket { min-height: 98px; padding-inline: 17px; } }
@media (max-width: 360px) { .shell { width: calc(100% - 28px); } .tab { padding-inline: 10px; gap: 4px; font-size: 10px; } .workbench-top { padding-inline: 11px; } .expiry-note { width: 94px; } .expiry-number { font-size: 38px; } h1 { font-size: 29px; } .hero-button { padding-inline: 15px; } .about-link { display: none; } .tab-panel { padding-inline: 14px; } .input-row .button { padding-inline: 12px; } }
@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }