/* ETF 收益平準金觀察站 */
:root {
  color-scheme: light;
  --page: #eef1ed;
  --paper: #f8faf7;
  --paper-soft: #e5ebe5;
  --ink: #18342a;
  --muted: #60756c;
  --line: #d2dcd5;
  --green: #137a56;
  --green-bright: #28b779;
  --panel: #12382c;
  --panel-soft: #1b4939;
  --panel-text: #f5f8f5;
  --panel-muted: #adbbb5;
  --radius: 28px;
  --small-radius: 14px;
  --shadow: 0 26px 70px rgba(19, 66, 49, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  min-width: 320px;
}

body {
  margin: 0;
  background:
    linear-gradient(color-mix(in srgb, var(--line) 48%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--line) 48%, transparent) 1px, transparent 1px),
    var(--page);
  background-size: 72px 72px;
  color: var(--ink);
  font-family:
    "Segoe UI",
    "Noto Sans TC",
    "PingFang TC",
    "Microsoft JhengHei",
    sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
  touch-action: manipulation;
  -webkit-tap-highlight-color: color-mix(in srgb, var(--green) 18%, transparent);
}

:focus-visible {
  outline: 3px solid var(--green-bright);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 750;
  text-decoration: none;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

h1,
h2,
h3 {
  text-wrap: balance;
  scroll-margin-top: 24px;
}

.site-header,
main,
footer {
  width: min(1240px, calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: var(--ink);
  font-weight: 760;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--green);
  color: #f5faf7;
  font-weight: 850;
}

.header-meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--muted);
  font-size: 0.82rem;
}

.header-meta strong {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

main {
  padding-block: 0 88px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(430px, 0.84fr) minmax(610px, 1.16fr);
  gap: clamp(44px, 5vw, 68px);
  align-items: center;
  padding-block: clamp(64px, 7vw, 96px) 56px;
}

.hero-copy {
  padding-left: clamp(0px, 1vw, 12px);
}

.hero-label,
.section-heading > p,
.reading-intro > p,
.source-section > div > p {
  margin: 0 0 17px;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3rem, 4vw, 4.15rem);
  font-weight: 820;
  letter-spacing: -0.055em;
  line-height: 1.06;
}

.hero h1 span {
  display: block;
}

.hero-description {
  max-width: 28rem;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.comparison-panel {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(36px, 4vw, 48px);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  color: var(--panel-text);
}

.comparison-panel::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 560px;
  aspect-ratio: 1;
  right: -170px;
  top: -240px;
  border: 84px solid var(--panel-soft);
  border-radius: 50%;
  opacity: 0.82;
  pointer-events: none;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(232, 244, 237, 0.22);
}

.panel-heading span {
  display: block;
  color: var(--panel-muted);
  font-size: 0.95rem;
}

.panel-heading strong {
  display: block;
  margin-top: 8px;
  color: var(--panel-text);
  font-size: clamp(1.8rem, 2.8vw, 2.3rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.unit-label {
  padding: 10px 16px;
  border: 1px solid rgba(232, 244, 237, 0.28);
  border-radius: var(--small-radius);
  text-align: right;
}

.hero-ranking {
  margin-top: 8px;
}

.rank-row {
  display: grid;
  grid-template-columns: 88px minmax(120px, 1fr) 126px;
  gap: 20px;
  align-items: center;
  min-height: 94px;
  border-bottom: 1px solid rgba(232, 244, 237, 0.18);
}

.rank-code {
  position: relative;
  z-index: 2;
  color: var(--fund-color);
  font-size: 1.08rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.035em;
  text-shadow: 0 1px 1px rgba(3, 19, 13, 0.42);
}

.rank-track {
  display: block;
  height: 10px;
  overflow: hidden;
  border-radius: 99px;
  background: rgba(221, 237, 228, 0.17);
}

.rank-fill {
  display: block;
  height: 100%;
  min-width: 10px;
  border-radius: inherit;
  background: var(--fund-color);
}

.rank-row strong {
  position: relative;
  z-index: 2;
  color: var(--panel-text);
  font-size: 2.05rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  text-align: right;
  white-space: nowrap;
}

.rank-row small,
.fund-value small {
  margin-left: 7px;
  color: var(--panel-muted);
  font-size: 0.88rem;
}

.panel-note {
  margin: 24px 0 0;
  color: var(--panel-muted);
  font-size: 0.94rem;
}

.interpretation-note {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 20px;
  align-items: start;
  margin-block: 36px 92px;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--small-radius);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
}

.note-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--paper-soft);
  color: var(--green);
  font-weight: 900;
}

.interpretation-note h2 {
  margin: 0;
  font-size: 1.05rem;
}

.interpretation-note p {
  margin: 4px 0 0;
  color: var(--muted);
}

.fund-section,
.reading-section,
.source-section {
  margin-top: 96px;
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 34px;
}

.section-heading h2,
.reading-intro h2,
.source-section h2,
.data-error h2 {
  margin: 0;
  font-size: clamp(2.15rem, 3.5vw, 3.35rem);
  letter-spacing: -0.05em;
  line-height: 1.08;
}

.section-heading > span {
  display: block;
  margin-top: 14px;
  color: var(--muted);
}

.fund-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.fund-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--small-radius);
  background:
    linear-gradient(var(--fund-color), var(--fund-color)) top / 100% 4px no-repeat,
    var(--paper);
  box-shadow: 0 18px 44px rgba(24, 70, 52, 0.07);
}

.fund-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.fund-code {
  color: var(--green);
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: 0.025em;
}

.fund-date {
  color: var(--muted);
  font-size: 0.83rem;
  font-variant-numeric: tabular-nums;
}

.fund-name {
  min-height: 74px;
  margin-top: 24px;
}

.fund-name h3 {
  margin: 0;
  font-size: 1.3rem;
}

.fund-name span {
  color: var(--muted);
  font-size: 0.9rem;
}

.composition {
  margin-top: 24px;
}

.composition-bar {
  display: flex;
  width: 100%;
  height: 10px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--paper-soft);
}

.composition-bar > span {
  display: block;
  height: 100%;
}

.composition-base {
  background: #aab9b1;
}

.composition-income {
  background: var(--fund-color);
}

.composition-capital {
  background: var(--ink);
}

.composition-labels {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 9px;
  color: var(--muted);
  font-size: 0.75rem;
}

.fund-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 24px;
}

.fund-metric {
  min-width: 0;
  padding: 14px;
  border-radius: 12px;
  background: var(--paper-soft);
}

.fund-metric span {
  display: block;
  min-height: 2.65em;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.fund-metric span em {
  margin-left: 4px;
  color: color-mix(in srgb, var(--muted) 78%, transparent);
  font-size: 0.68rem;
  font-style: normal;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.fund-metric strong {
  display: block;
  margin-top: 5px;
  color: var(--ink);
  font-size: 1.36rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.fund-metric small {
  margin-left: 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 650;
}

.income-metric {
  background: color-mix(in srgb, var(--fund-color) 17%, var(--paper));
}

.income-metric strong {
  color: var(--green);
}

.market-metric {
  background: color-mix(in srgb, var(--ink) 7%, var(--paper));
}

.premium-metric {
  --premium-tone: var(--muted);
  background: color-mix(in srgb, var(--premium-tone) 11%, var(--paper));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--premium-tone) 16%, transparent);
}

.premium-metric.is-discount {
  --premium-tone: var(--green);
}

.premium-metric.is-premium {
  --premium-tone: #a45d50;
}

.premium-metric strong {
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: var(--premium-tone);
}

.premium-metric strong b {
  margin-right: 2px;
  font-size: 0.7rem;
  font-weight: 850;
}

.fund-ratio {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.fund-ratio strong {
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.fund-card > a {
  align-self: flex-start;
  margin-top: 22px;
  padding-top: 0;
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 750;
  text-underline-offset: 5px;
  transition: transform 180ms ease;
}

.fund-card > a:hover {
  transform: translateY(-1px);
}

.market-note {
  max-width: 58rem;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.reading-section {
  padding: clamp(38px, 5vw, 58px);
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.reading-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 34px;
}

.reading-columns article {
  padding: 24px;
  border-radius: var(--small-radius);
  background: var(--paper);
}

.reading-mark {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 12px;
  background: var(--green);
  color: #f5faf7;
  font-size: 0.82rem;
  font-weight: 900;
}

.muted-mark {
  background: var(--ink);
}

.reading-columns h3 {
  margin: 22px 0 8px;
  font-size: 1.15rem;
}

.reading-columns p {
  margin: 0;
  color: var(--muted);
}

.source-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(540px, 1.1fr);
  gap: clamp(48px, 7vw, 84px);
  align-items: start;
}

.source-section nav {
  border-top: 1px solid var(--line);
}

.source-section nav a {
  display: grid;
  grid-template-columns: 74px 1fr auto;
  gap: 22px;
  align-items: center;
  min-height: 76px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.source-section nav a:hover strong {
  color: var(--green);
}

.source-section nav span {
  color: var(--green);
  font-weight: 900;
}

.source-section nav small {
  color: var(--muted);
}

.data-error {
  margin-top: 48px;
  padding: 30px;
  border: 1px solid #b95f5f;
  border-radius: var(--small-radius);
  background: var(--paper);
}

.data-error[hidden] {
  display: none;
}

.data-error p {
  margin-bottom: 0;
  color: var(--muted);
}

code {
  font-family: "Cascadia Mono", "Consolas", monospace;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

footer p,
footer span {
  margin: 0;
}

footer p {
  color: var(--ink);
  font-weight: 750;
}

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 44px;
    padding-top: 54px;
  }

  .hero-copy {
    padding-left: 0;
  }

  .hero h1 {
    max-width: 14ch;
  }

  .comparison-panel {
    margin-top: 8px;
  }

  .source-section {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 900px) {
  .fund-grid {
    grid-template-columns: 1fr;
  }

  .fund-name {
    min-height: 0;
  }
}

@media (max-width: 700px) {
  .site-header,
  main,
  footer {
    width: min(100% - 32px, 1320px);
  }

  .site-header {
    min-height: 64px;
  }

  .brand > span:last-child {
    font-size: 0.9rem;
  }

  .header-meta {
    display: none;
  }

  main {
    padding-bottom: 62px;
  }

  .hero {
    gap: 32px;
    padding-block: 38px 42px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.35rem, 10.5vw, 3rem);
    line-height: 1.08;
  }

  .hero-description {
    margin-top: 22px;
  }

  .comparison-panel {
    padding: 26px 22px;
    border-radius: 20px;
  }

  .comparison-panel::after {
    width: 340px;
    right: -170px;
    top: -175px;
    border-width: 52px;
  }

  .panel-heading {
    display: block;
    padding-bottom: 20px;
  }

  .unit-label {
    margin-top: 14px;
    padding: 0;
    border: 0;
    text-align: left;
  }

  .rank-row {
    grid-template-columns: 60px minmax(48px, 1fr) 94px;
    gap: 12px;
    min-height: 78px;
  }

  .rank-row strong {
    font-size: 1.62rem;
  }

  .interpretation-note {
    grid-template-columns: 40px 1fr;
    gap: 14px;
    margin-block: 30px 68px;
    padding: 20px;
  }

  .note-icon {
    width: 38px;
    height: 38px;
  }

  .fund-section,
  .reading-section,
  .source-section {
    margin-top: 68px;
  }

  .section-heading {
    margin-bottom: 26px;
  }

  .section-heading h2,
  .reading-intro h2,
  .source-section h2 {
    font-size: clamp(2rem, 10vw, 2.65rem);
  }

  .fund-card {
    padding: 24px;
  }

  .fund-name {
    margin-top: 20px;
  }

  .composition,
  .fund-metrics {
    margin-top: 20px;
  }

  .fund-card > a {
    margin-top: 18px;
  }

  .reading-section {
    padding: 28px 22px;
    border-radius: 20px;
  }

  .reading-columns {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 26px;
  }

  .reading-columns article {
    padding: 22px;
  }

  .reading-columns h3 {
    margin-top: 18px;
  }

  .source-section nav a {
    grid-template-columns: 62px 1fr;
    gap: 14px;
  }

  .source-section nav small {
    display: none;
  }

  footer {
    display: grid;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fund-card > a {
    transition: none;
  }
}