:root {
  --navy: #002e6d;
  --navy-strong: #001f4b;
  --sky: #c9edf7;
  --sky-soft: #e9f9ff;
  --white: #ffffff;
  --rescue: #f04e37;
  --ink: #11304f;
  --border: #b9e2f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--sky-soft), #f6fdff);
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 253, 255, 0.88));
  border-bottom: 1px solid #cce7f3;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 31, 75, 0.08);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--navy);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.01em;
  transition: transform 180ms ease;
}

.brand img {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
  border: 2px solid var(--sky);
  box-shadow: 0 4px 12px rgba(0, 46, 109, 0.18);
}

.brand:hover {
  transform: translateY(-1px);
}

.nav {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  white-space: nowrap;
  overflow: visible;
  min-width: 0;
}

.nav a {
  text-decoration: none;
  color: var(--navy-strong);
  font-weight: 600;
  padding: 0.42rem 0.62rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease, transform 120ms ease;
  flex: 0 0 auto;
}

.nav a:hover {
  background: rgba(201, 237, 247, 0.58);
  border-color: rgba(167, 214, 229, 0.72);
  transform: translateY(-1px);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  margin-left: 0.35rem;
  flex: 0 0 auto;
  transform: translateY(2px);
}

.lang-toggle {
  position: relative;
  height: 34px;
  min-width: 86px;
  border: 1px solid #6ea8c2;
  border-radius: 999px;
  background: linear-gradient(140deg, var(--navy), #0a4a93 58%, #2b77be);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  padding: 0 0.95rem;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(0, 31, 75, 0.3);
  transition: transform 120ms ease, filter 160ms ease, box-shadow 160ms ease;
  overflow: hidden;
}

.lang-toggle::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -38%;
  width: 36%;
  height: 120%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transition: left 260ms ease;
}

.lang-toggle::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  bottom: -34px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: rgba(0, 31, 75, 0.92);
  border-radius: 8px;
  padding: 0.24rem 0.48rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease, transform 150ms ease;
}

.lang-toggle:hover::after,
.lang-toggle:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.lang-toggle:hover {
  filter: brightness(1.08);
  box-shadow: 0 10px 22px rgba(0, 31, 75, 0.34);
}

.lang-toggle:hover::before {
  left: 112%;
}

.lang-toggle:focus-visible {
  outline: 2px solid #5ca6e9;
  outline-offset: 2px;
}

.lang-toggle:active {
  transform: translateY(1px);
  box-shadow: 0 4px 10px rgba(0, 31, 75, 0.3);
}

.hero {
  padding: 3.5rem 0 2.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: start;
}

.eyebrow {
  margin: 0;
  display: inline-flex;
  background: var(--sky);
  color: var(--navy);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-weight: 700;
}

h1 {
  color: var(--navy-strong);
  font-size: clamp(1.8rem, 3vw, 2.9rem);
  margin: 1rem 0 0.6rem;
  line-height: 1.2;
}

h2 {
  color: var(--navy-strong);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  margin: 0.8rem 0 0;
}

h3 {
  margin: 0;
}

.hero-text {
  max-width: 60ch;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 12px;
  padding: 0.65rem 1rem;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--navy-strong);
}

.btn-outline {
  color: var(--navy);
  border-color: var(--navy);
  background: transparent;
}

.btn-outline:hover {
  background: #eff8fc;
}

.stats {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.stats article {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.8rem;
}

.stats h3 {
  color: var(--rescue);
  font-size: 1.25rem;
}

.stats p {
  margin: 0.25rem 0 0;
  font-size: 0.92rem;
}

.hero-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 1rem;
}

.hero-card img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid #d7eaf2;
}

.hero-card ul {
  margin: 1rem 0 0.4rem;
  padding-left: 1.1rem;
  line-height: 1.65;
}

.section {
  padding: 2.5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, #f2fbff, #ecf8fd);
  border-top: 1px solid #d8edf5;
  border-bottom: 1px solid #d8edf5;
}

.section-head {
  margin-bottom: 1rem;
}

.auth-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0.8rem;
}

.auth-form,
.auth-panel {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.95rem;
}

.auth-form {
  display: grid;
  gap: 0.65rem;
}

.auth-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.auth-panel p {
  line-height: 1.65;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.cert-wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.cert-form,
.cert-panel {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.95rem;
}

.cert-form {
  display: grid;
  gap: 0.6rem;
}

.cert-form h3,
.cert-panel h3 {
  color: var(--navy);
}

.cert-panel p {
  line-height: 1.65;
}

.review-wrap {
  display: grid;
  gap: 0.75rem;
}

.review-batch-bar {
  background: #eef9ff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.8rem;
  display: grid;
  gap: 0.65rem;
}

.review-batch-bar p {
  margin: 0;
  color: var(--navy-strong);
  font-weight: 600;
}

.review-batch-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

#batchPreviewMessage {
  margin: 0;
}

.review-card {
  display: grid;
  gap: 0.55rem;
}

.review-card p {
  margin: 0;
  line-height: 1.55;
}

.review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.review-actions .btn {
  flex: 1 1 120px;
}

select,
input {
  width: 100%;
  padding: 0.7rem 0.75rem;
  border: 1px solid #bddde9;
  border-radius: 10px;
  font: inherit;
  background: var(--white);
}

.filters select {
  width: auto;
  min-width: 160px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.8rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.95rem;
}

.card strong {
  color: var(--navy);
}

.chip-row {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-top: 0.55rem;
}

.chip {
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.chip-blue {
  background: #e1f4fb;
  color: var(--navy);
}

.chip-red {
  background: #ffebe8;
  color: #bc2f1d;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(200px, 1fr));
  gap: 0.75rem;
  align-items: center;
}

.form-grid .btn,
.form-grid .status {
  grid-column: 1 / -1;
}

.status {
  margin: 0;
  min-height: 1.2rem;
  font-weight: 700;
  color: #0a6d2d;
}

.status-error {
  color: #b22f20;
}

.apply-btn {
  margin-top: 0.7rem;
  width: 100%;
}

.apply-btn:disabled {
  background: #8fb3d4;
  cursor: not-allowed;
}

.token-wrap {
  display: grid;
  gap: 1rem;
}

.token-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.token-grid article {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
}

.token-grid ul {
  margin: 0.65rem 0 0;
  padding-left: 1.1rem;
  line-height: 1.7;
}

.footer {
  background: var(--navy-strong);
  color: #e3f4ff;
  padding: 1rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.7rem;
  align-items: center;
}

.footer .btn-outline {
  border-color: #c6eaff;
  color: #e4f7ff;
}

@media (max-width: 880px) {
  .topbar-inner {
    flex-direction: row;
    align-items: center;
  }

  .nav {
    justify-content: flex-end;
    flex-wrap: nowrap;
    white-space: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    gap: 0.3rem;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .auth-grid {
    grid-template-columns: 1fr;
  }

  .cert-wrap {
    grid-template-columns: 1fr;
  }
}