:root {
  --paper: #f5f3ef;
  --paper-deep: #ebe7e0;
  --surface: #fffefa;
  --ink: #16245f;
  --ink-deep: #0c184b;
  --ink-soft: #394878;
  --muted: #6f7485;
  --line: rgba(22, 36, 95, 0.15);
  --line-strong: rgba(22, 36, 95, 0.28);
  --cobalt: #2636a4;
  --cyan: #1599ca;
  --coral: #e56556;
  --amber: #e9a62d;
  --magenta: #b83d83;
  --success: #18794e;
  --danger: #b42318;
  --font-display: "Avenir Next", "Noto Sans TC", "PingFang TC", sans-serif;
  --font-body: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --container: 1180px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius-md: 18px;
  --shadow: 0 24px 70px rgba(17, 31, 91, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.75 var(--font-body); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid rgba(21, 153, 202, 0.45); outline-offset: 4px; }
.container { width: min(calc(100% - (var(--gutter) * 2)), var(--container)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(22, 36, 95, 0.11); background: rgba(255, 254, 250, 0.94); backdrop-filter: blur(18px); }
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { min-width: 0; display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand-mark { width: 54px; height: 54px; flex: 0 0 auto; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--cobalt); font: 800 14px/1 var(--font-display); letter-spacing: -0.06em; position: relative; }
.brand-mark::after { content: ""; position: absolute; right: -7px; bottom: -7px; width: 24px; height: 24px; border-radius: 50%; background: linear-gradient(135deg, var(--amber), var(--coral), var(--magenta)); }
.brand-copy { min-width: 0; display: grid; gap: 2px; }
.brand-title { overflow: hidden; color: var(--ink-deep); font-size: 14px; font-weight: 750; line-height: 1.3; text-overflow: ellipsis; white-space: nowrap; }
.brand-subtitle { color: var(--muted); font: 600 10px/1.3 var(--font-mono); letter-spacing: 0.08em; }
.main-menu { display: flex; align-items: center; gap: 8px; }
.main-menu a { min-height: 44px; padding: 0 18px; border: 1px solid transparent; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-soft); font-size: 14px; font-weight: 700; text-decoration: none; transition: 160ms ease; }
.main-menu a:hover { color: var(--cobalt); transform: translateY(-1px); }
.main-menu a[aria-current="page"] { border-color: var(--line); background: rgba(38, 54, 164, 0.06); color: var(--cobalt); }
.main-menu .menu-cta { border-color: var(--cobalt); background: var(--cobalt); color: white; box-shadow: 0 10px 28px rgba(38, 54, 164, 0.2); }

.hero { min-height: 650px; display: grid; align-items: center; position: relative; overflow: hidden; isolation: isolate; border-bottom: 1px solid var(--line); background: var(--surface) url("../images/tids-2026-hero.png") center/cover no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(255,254,250,.98) 0%, rgba(255,254,250,.94) 36%, rgba(255,254,250,.34) 68%, rgba(255,254,250,.03) 100%); }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 8px; background: linear-gradient(90deg, var(--cobalt) 0 28%, var(--cyan) 28% 49%, var(--magenta) 49% 70%, var(--coral) 70% 86%, var(--amber) 86%); }
.hero-content { width: min(720px, 66%); padding-block: 86px 96px; }
.hero-eyebrow, .section-kicker { margin: 0 0 18px; display: flex; align-items: center; gap: 10px; color: var(--cobalt); font: 700 11px/1.4 var(--font-mono); letter-spacing: 0.12em; }
.hero-eyebrow::before, .section-kicker::before { content: ""; width: 32px; height: 3px; background: linear-gradient(90deg, var(--cobalt), var(--magenta)); }
.hero h1 { margin: 0; color: var(--ink-deep); font: 800 clamp(44px, 5.4vw, 76px)/1.08 var(--font-display); letter-spacing: -0.055em; }
.hero h1 .year { display: block; margin-bottom: 8px; color: var(--cobalt); font: 800 clamp(24px, 2.7vw, 38px)/1 var(--font-display); letter-spacing: .04em; }
.title-break { display: block; }
.hero-lead { max-width: 34em; margin: 26px 0 0; color: var(--ink-soft); font-size: clamp(17px, 1.7vw, 20px); }
.hero-meta { margin: 34px 0 0; padding: 18px 0; display: flex; flex-wrap: wrap; gap: 16px 30px; border-block: 1px solid var(--line); }
.hero-meta-item { display: grid; gap: 2px; }
.hero-meta-label, .fact-label { color: var(--muted); font: 650 10px/1.4 var(--font-mono); letter-spacing: .11em; }
.hero-meta-value { color: var(--ink-deep); font-size: 17px; font-weight: 760; }
.hero-actions, .actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 50px; padding: 0 24px; border: 1px solid var(--line-strong); border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; background: rgba(255,254,250,.9); color: var(--ink); font-size: 14px; font-weight: 750; text-decoration: none; transition: 160ms ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(17,31,91,.12); }
.button-primary { border-color: var(--cobalt); background: var(--cobalt); color: white; }
.button-primary:hover { background: var(--ink-deep); color: white; }
.button:disabled { cursor: not-allowed; opacity: .55; transform: none; }

.facts-wrap { position: relative; z-index: 4; margin-top: -42px; }
.facts { display: grid; grid-template-columns: 1.2fr 1fr 1.25fr; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(255,254,250,.96); box-shadow: var(--shadow); }
.fact { min-height: 150px; padding: 27px 30px; display: grid; align-content: center; gap: 10px; position: relative; }
.fact + .fact { border-left: 1px solid var(--line); }
.fact-value { color: var(--ink-deep); font-size: clamp(18px,2vw,23px); font-weight: 780; }
.fact-note { color: var(--muted); font-size: 13px; }
.fact-date { background: var(--ink-deep); }
.fact-date .fact-label, .fact-date .fact-note { color: rgba(255,255,255,.64); }
.fact-date .fact-value { color: white; font-size: clamp(28px,3.1vw,42px); }

.section { padding-block: clamp(72px,9vw,124px); }
.section + .section { border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(180px,.42fr) minmax(0,1fr); gap: clamp(32px,7vw,104px); align-items: start; }
.section-index { color: var(--line-strong); font: 800 clamp(50px,7vw,88px)/.9 var(--font-display); letter-spacing: -.08em; }
.section h2 { margin: 0; color: var(--ink-deep); font: 780 clamp(34px,4.4vw,58px)/1.16 var(--font-display); letter-spacing: -.05em; white-space: pre-line; }
.section-intro { max-width: 44em; margin: 24px 0 0; color: var(--ink-soft); font-size: clamp(17px,1.8vw,21px); }
.about-grid { margin-top: 58px; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--line); }
.about-card { min-height: 270px; padding: 34px; background: var(--surface); position: relative; }
.about-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--cobalt); }
.about-card:nth-child(2)::before { background: var(--cyan); }
.about-card:nth-child(3)::before { background: linear-gradient(90deg,var(--magenta),var(--coral),var(--amber)); }
.about-number { color: var(--cobalt); font: 750 12px/1.4 var(--font-mono); letter-spacing: .12em; }
.about-card h3 { margin: 48px 0 14px; color: var(--ink-deep); font-size: 22px; }
.about-card p { margin: 0; color: var(--muted); font-size: 15px; }

.event-section { background: var(--surface); }
.event-layout, .registration-layout { margin-top: 58px; display: grid; grid-template-columns: minmax(0,1.25fr) minmax(300px,.75fr); gap: 28px; align-items: start; }
.info-panel, .notice-panel, .fee-card, .policy-card { border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.info-panel, .fee-card { overflow: hidden; }
.info-row { padding: 24px 28px; display: grid; grid-template-columns: 150px minmax(0,1fr); gap: 24px; }
.info-row + .info-row { border-top: 1px solid var(--line); }
.info-label { color: var(--muted); font: 650 11px/1.7 var(--font-mono); letter-spacing: .1em; }
.info-value { color: var(--ink-deep); font-weight: 700; }
.info-value small { display: block; color: var(--muted); font-weight: 450; }
.notice-panel, .policy-card { padding: 30px; }
.notice-panel h3, .policy-card h3 { margin: 0 0 16px; color: var(--ink-deep); }
.notice-panel ul { margin: 0; padding-left: 1.2em; color: var(--ink-soft); }
.registration-section { background: var(--paper); }
.fee-card { box-shadow: 0 20px 56px rgba(17,31,91,.08); }
.fee-card-header { padding: 25px 28px; display: flex; align-items: end; justify-content: space-between; gap: 18px; background: var(--ink-deep); color: white; }
.fee-card-header h3 { margin: 0; }
.fee-card-header span { color: rgba(255,255,255,.66); font-size: 12px; }
.table-scroll { overflow-x: auto; }
.fee-table, .summary-table { width: 100%; min-width: 680px; border-collapse: collapse; }
.fee-table { text-align: right; }
.fee-table th, .fee-table td, .summary-table th, .summary-table td { padding: 17px 20px; border-bottom: 1px solid var(--line); }
.fee-table th, .summary-table th { background: rgba(38,54,164,.045); color: var(--muted); font-size: 12px; text-align: left; }
.fee-table th:not(:first-child), .fee-table td:not(:first-child), .summary-table th:not(:first-child), .summary-table td:not(:first-child) { text-align: right; }
.fee-table td:first-child { color: var(--ink-deep); font-weight: 700; }
.fee-table .featured { color: var(--cobalt); font-weight: 800; }
.fee-note, .summary-note { margin: 0; padding: 18px 22px; color: var(--muted); font-size: 12px; }
.next-card { padding: 32px; display: grid; gap: 20px; border-radius: var(--radius-md); background: var(--cobalt); color: white; box-shadow: 0 20px 50px rgba(38,54,164,.23); }
.next-card h3, .next-card p { margin: 0; }
.next-card .section-kicker, .preview-note { color: rgba(255,255,255,.68); }
.next-card .button { background: white; color: var(--cobalt); }
.preview-note { font-size: 11px; }
.policy-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; }
.policy-card ul, .policy-card ol { margin: 0; padding-left: 1.35em; color: var(--ink-soft); }
.units-section { background: var(--ink-deep); color: white; }
.units-section h2 { color: white; }
.units-section .section-intro { color: rgba(255,255,255,.66); }
.unit-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1px; overflow: hidden; border: 1px solid rgba(255,255,255,.13); border-radius: var(--radius-md); background: rgba(255,255,255,.13); }
.unit { min-height: 190px; padding: 28px; background: rgba(255,255,255,.04); }
.unit-role { color: var(--cyan); font: 700 10px/1.4 var(--font-mono); letter-spacing: .12em; }
.unit h3 { margin: 40px 0 0; color: white; font-size: 19px; white-space: pre-line; }
.unit p { color: rgba(255,255,255,.58); }
.unit-wide { grid-column: span 2; }
.site-footer { padding-block: 32px; border-top: 1px solid rgba(255,255,255,.1); background: var(--ink-deep); color: rgba(255,255,255,.6); font-size: 12px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-inner strong, .footer-contact a { color: white; }
.footer-contact { display: flex; flex-wrap: wrap; gap: 8px 18px; }

.flow-progress { border-bottom: 1px solid var(--line); background: var(--surface); }
.flow-progress ol { width: min(calc(100% - (var(--gutter) * 2)), var(--container)); margin: 0 auto; padding: 18px 0; display: grid; grid-template-columns: repeat(5,1fr); gap: 12px; list-style: none; }
.flow-step { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; font-weight: 700; }
.flow-step-number { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; font: 700 11px/1 var(--font-mono); }
.flow-step.is-current { color: var(--cobalt); }
.flow-step.is-current .flow-step-number, .flow-step.is-complete .flow-step-number { border-color: var(--cobalt); background: var(--cobalt); color: white; }
.workflow-main { min-height: 65vh; padding-block: clamp(44px,7vw,84px); }
.workflow-container { max-width: 940px; }
.workflow-main .flow-progress { margin-bottom: 24px; border: 0; background: transparent; }
.workflow-main .flow-progress ol { width: 100%; padding-top: 0; }
.workflow-card { padding: clamp(26px,5vw,56px); border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow); }
.workflow-card > h1 { margin: 0; color: var(--ink-deep); font: 780 clamp(32px,5vw,54px)/1.18 var(--font-display); letter-spacing: -.04em; }
.page-intro { margin: 18px 0 32px; color: var(--ink-soft); font-size: 17px; }
.workflow-form { display: grid; gap: 28px; }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.form-group-heading { grid-column: 1/-1; margin: 14px 0 0; padding-bottom: 10px; border-bottom: 1px solid var(--line); color: var(--ink-deep); }
.field { display: grid; align-content: start; gap: 8px; }
.field > label, .field-label { color: var(--ink-deep); font-weight: 750; }
.field input:not([type="checkbox"]):not([type="radio"]), .field select, .field textarea { width: 100%; min-height: 48px; padding: 10px 13px; border: 1px solid var(--line-strong); border-radius: 10px; background: white; color: var(--ink-deep); }
.field textarea { min-height: 130px; resize: vertical; }
.field-options { display: flex; flex-wrap: wrap; gap: 10px; }
.field-option { padding: 10px 13px; display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); }
.field-input-group { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; }
.field-note, .field-help, .field-error { color: var(--muted); font-size: 12px; }
.field-error { color: var(--danger); }
.field-editor { padding: 18px; border-left: 4px solid var(--cyan); background: var(--paper); white-space: pre-line; }
.privacy-field { grid-column: 1/-1; }
.privacy-notice { padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.privacy-notice summary { cursor: pointer; color: var(--ink-deep); font-weight: 750; }
.privacy-notice-body { color: var(--ink-soft); font-size: 14px; }
.privacy-consent-title { margin-top: 8px; }
.submit-button { justify-self: start; }
.result-panel, .configuration-panel, .action-panel, .provider-panel { margin-block: 24px; padding: 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.configuration-panel { border-color: rgba(180,35,24,.3); background: rgba(180,35,24,.055); color: var(--danger); }
.result-panel.is-success { border-color: rgba(24,121,78,.35); color: var(--success); }
.result-panel.is-error { border-color: rgba(180,35,24,.35); color: var(--danger); }
.summary-card, .payment-methods { margin-top: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; }
.summary-card-header { padding: 22px; display: flex; justify-content: space-between; align-items: start; gap: 20px; background: var(--paper); }
.summary-card-header h2 { margin: 0; color: var(--ink-deep); }
.currency-badge, .status-badge { padding: 5px 10px; border-radius: 999px; background: var(--ink-deep); color: white; font: 700 11px/1.4 var(--font-mono); }
.summary-meta, .attempt-details { margin: 0; padding: 20px 22px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px 24px; }
.summary-meta div, .attempt-details div { display: grid; gap: 2px; }
.summary-meta dt, .attempt-details dt { color: var(--muted); font-size: 12px; }
.summary-meta dd, .attempt-details dd { margin: 0; color: var(--ink-deep); font-weight: 750; overflow-wrap: anywhere; }
.money { font-variant-numeric: tabular-nums; }
.money::before { content: "NT$ "; color: var(--muted); font-size: .8em; }
.payment-methods { padding: 24px; }
.payment-methods h2 { margin-top: 0; }
.payment-method-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.payment-method-card { padding: 22px; display: grid; gap: 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.payment-method-card strong { color: var(--ink-deep); font-size: 19px; }
.payment-method-card span { color: var(--muted); font-size: 14px; }
.payment-method-card .button { justify-self: start; }
.status-panel { margin-block: 26px; padding: 28px; border-left: 5px solid var(--muted); border-radius: 12px; background: var(--paper); }
.status-panel h2 { margin: 14px 0 6px; color: var(--ink-deep); }
.status-panel p { margin: 0; color: var(--ink-soft); }
.status-success { border-color: var(--success); background: rgba(24,121,78,.055); }
.status-pending { border-color: var(--amber); background: rgba(233,166,45,.075); }
.status-error { border-color: var(--danger); background: rgba(180,35,24,.055); }
.virtual-account { margin-block: 20px; padding: 18px; border: 1px dashed var(--cobalt); border-radius: 10px; background: white; color: var(--ink-deep); font: 800 clamp(22px,4vw,34px)/1.4 var(--font-mono); letter-spacing: .08em; text-align: center; overflow-wrap: anywhere; }
.security-note { color: var(--muted); font-size: 13px; }

@media (max-width: 900px) {
  .hero-content { width: min(620px,76%); }
  .facts { grid-template-columns: 1fr 1fr; }
  .fact-date { grid-column: span 2; }
  .event-layout, .registration-layout { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr 1fr; }
  .about-card:last-child { grid-column: span 2; }
  .flow-step { justify-content: center; }
  .flow-step span:last-child { display: none; }
}

@media (max-width: 680px) {
  .site-header { position: static; }
  .header-inner { padding-block: 14px; flex-direction: column; gap: 14px; }
  .main-menu { width: 100%; }
  .main-menu a { flex: 1; padding-inline: 9px; }
  .brand-title { max-width: min(72vw,360px); }
  .hero { min-height: 700px; align-items: end; background-position: 64% center; }
  .hero::before { background: linear-gradient(180deg,rgba(255,254,250,.2),rgba(255,254,250,.75) 38%,var(--surface) 65%); }
  .hero-content { width: 100%; padding-block: 280px 62px; }
  .hero h1 { font-size: clamp(38px,11vw,54px); }
  .hero-actions .button { width: 100%; }
  .facts-wrap { margin-top: 0; }
  .facts { grid-template-columns: 1fr; border-radius: 0; }
  .fact, .fact-date { min-height: auto; grid-column: auto; }
  .fact + .fact { border-top: 1px solid var(--line); border-left: 0; }
  .section { padding-block: 68px; }
  .section-heading { grid-template-columns: 1fr; gap: 22px; }
  .section-index { display: none; }
  .about-grid, .unit-grid, .policy-grid, .form-grid, .payment-method-grid { grid-template-columns: 1fr; }
  .about-card:last-child, .unit-wide { grid-column: auto; }
  .info-row { grid-template-columns: 1fr; gap: 6px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .summary-meta, .attempt-details { grid-template-columns: 1fr; }
  .workflow-card { padding: 24px 18px; border-radius: 12px; }
  .field-input-group { grid-template-columns: 1fr; }
}

@media print {
  .site-header, .site-footer, .flow-progress, .no-print { display: none !important; }
  body, .workflow-main, .workflow-card { background: white; }
  .workflow-main { padding: 0; }
  .workflow-card { border: 0; box-shadow: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}