/* RF-Power 公司網站樣式
   品牌色取自 Logo:主色 #338C75(墨綠)、輔色 #8AB03C(亮綠)
   色彩:Ink 深色區底、Signal 掃描軌跡(= Logo 訊號波的亮綠)、Marker 頻段標記、Paper 淺色區底 */

:root {
  --brand: #338C75;
  --brand-lime: #8AB03C;
  --ink: #0D2A24;
  --panel: #1D4A40;
  --signal: #8AB03C;
  --signal-soft: #A3C65C;
  --marker: #6CCBAE;
  --paper: #F2F6F4;
  --white: #FFFFFF;
  --text: #10231E;
  --muted: #4B605A;
  --teal: #2C7A66;
  --on-dark: #E8F1ED;
  --on-dark-muted: #A6BDB5;
  --line-light: #D5E0DB;
  --danger: #B3261E;

  --font: "IBM Plex Sans", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --header-h: 4rem;
  --radius: 4px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--paper);
  text-rendering: optimizeLegibility;
}

.lang-en {
  line-height: 1.65;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.25;
  font-weight: 600;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

img,
svg {
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--focus, var(--teal));
  outline-offset: 2px;
}

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--signal);
  color: var(--ink);
  font-weight: 600;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 0.5rem;
}

/* ---------- Header ---------- */

.site-header {
  --focus: var(--teal);
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  color: var(--text);
  border-bottom: 1px solid var(--line-light);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  display: block;
  width: auto;
  height: 1.75rem;
}

@media (max-width: 400px) {
  .brand img {
    height: 1.4rem;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9375rem;
}

.nav-links a:hover {
  color: var(--brand);
}

.lang-switch {
  display: flex;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  overflow: hidden;
}

.lang-switch a {
  padding: 0.2rem 0.7rem;
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
}

.lang-switch a:hover {
  color: var(--brand);
}

.lang-switch a[aria-current="true"] {
  background: var(--brand);
  color: var(--white);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.9375rem;
  cursor: pointer;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: currentColor;
}

.nav-toggle-bars {
  position: relative;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-bars::before {
  top: -6px;
}

.nav-toggle-bars::after {
  top: 6px;
}

@media (max-width: 860px) {
  .js .nav-toggle {
    display: inline-flex;
  }

  .js .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1rem var(--gutter) 1.5rem;
    background: var(--white);
    border-bottom: 1px solid var(--line-light);
  }

  .js .site-nav.is-open {
    display: flex;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.25rem;
  }

  .js .nav-links a {
    display: block;
    padding: 0.4rem 0;
    font-size: 1.0625rem;
  }

  .header-bar {
    flex-wrap: wrap;
  }

  html:not(.js) .header-bar {
    padding-block: 0.75rem;
  }

  html:not(.js) .nav-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
  }
}

/* ---------- Buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.6rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
}

.button-primary {
  background: var(--signal);
  color: var(--ink);
}

.button-primary:hover {
  background: var(--signal-soft);
}

.button-primary[disabled] {
  opacity: 0.6;
  cursor: progress;
}

.button-quiet {
  border-color: rgba(232, 241, 237, 0.35);
  color: var(--on-dark);
}

.button-quiet:hover {
  border-color: var(--signal);
}

/* ---------- Sections ---------- */

section[id] {
  scroll-margin-top: var(--header-h);
}

.section {
  padding-block: clamp(4rem, 9vw, 7rem);
}

.section-light {
  background: var(--paper);
}

.section-contact {
  background: var(--white);
}

.section-dark {
  --focus: var(--signal);
  background: var(--ink);
  color: var(--on-dark);
}

.section h2 {
  font-size: clamp(1.625rem, 1.2rem + 1.6vw, 2.25rem);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 1.5rem 4rem;
  align-items: start;
}

.split-sub {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 1.75rem;
}

.split-sub h3 {
  font-size: 1.3125rem;
}

.prose {
  max-width: 40em;
}

.lang-en .prose {
  max-width: 36em;
}

.prose p + p {
  margin-top: 1em;
}

.section-dark .prose {
  color: var(--on-dark-muted);
}

@media (max-width: 760px) {
  .split {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- Hero ---------- */

.hero {
  --focus: var(--signal);
  background: var(--ink);
  color: var(--on-dark);
  padding-block: clamp(3.5rem, 8vw, 6rem) clamp(3rem, 6vw, 4.5rem);
}

.hero h1 {
  max-width: 14em;
  font-size: clamp(2rem, 1.1rem + 3.4vw, 3.5rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

/* 中文標題只在空白與標點後換行,避免「完整」被拆到兩行 */
.lang-zh .hero h1 {
  word-break: keep-all;
}

.lang-en .hero h1 {
  max-width: 17em;
  letter-spacing: -0.01em;
}

.hero-lead {
  max-width: 34em;
  margin-top: 1.5rem;
  font-size: 1.125rem;
  color: var(--on-dark-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* 頻譜尺 */

.spectrum {
  margin: clamp(3rem, 7vw, 4.5rem) 0 0;
}

.spectrum-bands {
  position: relative;
  height: 3.7rem;
}

.band-label {
  position: absolute;
  height: 1.7rem;
  min-width: 3px;
  opacity: 1;
}

.band-row-1 {
  top: 0;
}

.band-row-2 {
  top: 1.95rem;
}

.band-label::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0.4rem;
  border: 1px solid var(--marker);
  border-bottom: 0;
}

.band-label > span {
  position: absolute;
  left: 0;
  bottom: 0.45rem;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.2;
  color: var(--marker);
  white-space: nowrap;
}

.band-label-end > span {
  left: auto;
  right: 0;
}

.spectrum-plot {
  display: block;
  width: 100%;
  height: clamp(110px, 17vw, 190px);
  overflow: visible;
}

.spectrum-plot * {
  vector-effect: non-scaling-stroke;
}

.spectrum-grid line {
  stroke: var(--on-dark-muted);
  stroke-opacity: 0.13;
  stroke-width: 1;
}

.spectrum-shades rect {
  fill: var(--marker);
  fill-opacity: 0.22;
}

.spectrum-trace {
  fill: none;
  stroke: var(--signal);
  stroke-width: 1.5;
  stroke-linejoin: round;
}

.spectrum-axis {
  stroke: var(--on-dark-muted);
  stroke-opacity: 0.5;
  stroke-width: 1;
}

.spectrum-reveal,
.spectrum-sweep {
  transform-box: view-box;
  transform-origin: 0 0;
}

.spectrum-sweep {
  stroke: var(--signal);
  stroke-width: 1;
  opacity: 0;
}

.spectrum-ticks {
  position: relative;
  height: 1.5rem;
  margin-top: 0.4rem;
}

.tick {
  position: absolute;
  top: 0;
  font-size: 0.8125rem;
  line-height: 1.5rem;
  color: var(--on-dark-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.tick-center {
  transform: translateX(-50%);
}

.tick-end {
  transform: translateX(-100%);
}

/* 載入時的單次掃描:軌跡由左往右顯現,頻段標記隨後出現 */

@media (prefers-reduced-motion: no-preference) {
  .spectrum-reveal {
    transform: scaleX(0);
    animation: spectrum-reveal 2s cubic-bezier(0.45, 0, 0.25, 1) 0.25s forwards;
  }

  .spectrum-sweep {
    animation: spectrum-sweep 2s cubic-bezier(0.45, 0, 0.25, 1) 0.25s forwards;
  }

  .band-label {
    opacity: 0;
    animation: band-in 0.5s ease-out 2s forwards;
  }
}

@keyframes spectrum-reveal {
  to {
    transform: scaleX(1);
  }
}

@keyframes spectrum-sweep {
  0% {
    opacity: 0.9;
    transform: translateX(0);
  }
  92% {
    opacity: 0.9;
  }
  100% {
    opacity: 0;
    transform: translateX(1000px);
  }
}

@keyframes band-in {
  to {
    opacity: 1;
  }
}

/* ---------- 產品與服務 ---------- */

.tech-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.tech-table thead th {
  padding: 0 1rem 0.75rem 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--on-dark-muted);
  border-bottom: 1px solid var(--panel);
}

.tech-table tbody th,
.tech-table tbody td {
  padding: 1.35rem 1.5rem 1.35rem 0;
  border-bottom: 1px solid var(--panel);
  vertical-align: top;
}

.tech-table tbody th {
  width: 18%;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
}

.tech-table tbody td {
  color: var(--on-dark-muted);
}

.tech-band {
  width: 32%;
}

.tech-band-text {
  display: block;
  color: var(--on-dark);
  font-variant-numeric: tabular-nums;
}

.band-track {
  position: relative;
  display: block;
  width: 100%;
  max-width: 15rem;
  height: 4px;
  margin-top: 0.7rem;
  background: var(--panel);
}

.band-track > span {
  position: absolute;
  top: 0;
  bottom: 0;
  background: var(--marker);
}

@media (max-width: 720px) {
  .tech-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .tech-table,
  .tech-table tbody,
  .tech-table tr,
  .tech-table th,
  .tech-table td {
    display: block;
    width: 100%;
  }

  .tech-table tr {
    padding-block: 1.25rem;
    border-bottom: 1px solid var(--panel);
  }

  .tech-table tbody th,
  .tech-table tbody td {
    width: 100%;
    padding: 0;
    border: 0;
  }

  .tech-table .tech-band {
    width: 100%;
    margin-block: 0.35rem 0.75rem;
  }
}

.solution {
  margin-top: 0.5rem;
}

.chain {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chain li {
  position: relative;
  padding-top: 1.75rem;
  border-top: 2px solid var(--panel);
}

.chain li::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border: 2px solid var(--signal);
  border-radius: 50%;
  background: var(--ink);
}

.chain li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: -6px;
  right: -1.9rem;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--signal);
  border-right: 2px solid var(--signal);
  transform: rotate(45deg);
}

.chain h4,
.integration h4 {
  font-size: 1.125rem;
}

.chain p,
.integration p {
  margin-top: 0.5rem;
  color: var(--on-dark-muted);
}

.integration {
  position: relative;
  margin-top: 2.25rem;
  padding-top: 1.75rem;
}

.integration::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0.9rem;
  border: 1px solid var(--signal);
  border-top: 0;
  opacity: 0.55;
}

.integration p {
  max-width: 40em;
}

@media (max-width: 760px) {
  .chain {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .chain li {
    padding: 0 0 1.75rem 1.75rem;
    border-top: 0;
    border-left: 2px solid var(--panel);
  }

  .chain li::before {
    top: 0.3rem;
    left: -7px;
  }

  .chain li:not(:last-child)::after {
    display: none;
  }

  .integration {
    margin-top: 0.5rem;
  }
}

/* ---------- 優勢 ---------- */

.advantages {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.75rem 4rem;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
}

.advantages li {
  padding-top: 1.25rem;
  border-top: 2px solid var(--text);
}

.advantages h3 {
  font-size: 1.25rem;
}

.advantages p {
  max-width: 32em;
  margin-top: 0.6rem;
  color: var(--muted);
}

@media (max-width: 640px) {
  .advantages {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }
}

/* ---------- 聯絡 ---------- */

.contact-intro .prose {
  margin-top: 1.25rem;
}

.contact-privacy {
  margin-top: 1.25rem;
  font-size: 0.9375rem;
  color: var(--muted);
}

.contact-form {
  position: relative;
  max-width: 40rem;
}

.hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.field {
  margin-bottom: 1.25rem;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 1.25rem;
}

@media (max-width: 560px) {
  .field-row {
    grid-template-columns: minmax(0, 1fr);
  }
}

.field label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9375rem;
  font-weight: 500;
}

.optional {
  font-weight: 400;
  color: var(--muted);
}

.field input,
.field textarea {
  display: block;
  width: 100%;
  padding: 0.65rem 0.8rem;
  border: 1px solid #ADC0B9;
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--text);
  font: inherit;
  line-height: 1.5;
}

.field textarea {
  resize: vertical;
  min-height: 9rem;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--teal);
  background: var(--white);
  outline: 2px solid var(--teal);
  outline-offset: 0;
}

.field [aria-invalid="true"] {
  border-color: var(--danger);
}

.field-error {
  margin-top: 0.35rem;
  font-size: 0.875rem;
  color: var(--danger);
}

.field-error:empty {
  display: none;
}

.form-status {
  margin-bottom: 1.5rem;
  padding: 0.8rem 1rem;
  border-left: 3px solid;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.form-status:empty {
  display: none;
}

.form-status.is-ok {
  background: #E2F3EA;
  border-color: #2E7D52;
  color: #154D30;
}

.form-status.is-error {
  background: #FBEAE8;
  border-color: var(--danger);
  color: #7F1D16;
}

.contact-form .button-primary {
  background: var(--ink);
  color: var(--on-dark);
}

.contact-form .button-primary:hover {
  background: var(--panel);
}

/* ---------- 首頁精選產品 ---------- */

.featured-product {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 1.75rem 4rem;
  align-items: center;
}

.featured-photo {
  display: block;
  padding: 1.25rem;
  background: var(--white);
  border-radius: 6px;
}

.featured-photo img {
  display: block;
  width: 100%;
  height: auto;
}

.featured-body h4 {
  font-size: 1.625rem;
}

.featured-tagline {
  margin-top: 0.35rem;
  color: var(--on-dark-muted);
}

.featured-points {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.featured-points li {
  position: relative;
  margin-top: 0.45rem;
  padding-left: 1.25rem;
}

.featured-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 0.55rem;
  height: 2px;
  background: var(--signal);
}

.featured-cert {
  margin-top: 1rem;
  font-size: 0.9375rem;
  color: var(--on-dark-muted);
  font-variant-numeric: tabular-nums;
}

.featured-body .button {
  margin-top: 1.5rem;
}

@media (max-width: 760px) {
  .featured-product {
    grid-template-columns: minmax(0, 1fr);
  }

  .featured-photo {
    max-width: 20rem;
  }
}

/* ---------- 產品頁 ---------- */

.product-hero {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  background: var(--white);
  border-bottom: 1px solid var(--line-light);
}

.product-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 2rem clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

@media (max-width: 760px) {
  .product-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .product-photo img {
    max-width: 20rem;
  }
}

.product-photo {
  margin: 0;
}

.product-photo img {
  display: block;
  width: 100%;
  max-width: 30rem;
  height: auto;
  margin-inline: auto;
}

.product-summary h1 {
  font-size: clamp(2.125rem, 1.4rem + 2.6vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.product-tagline {
  margin-top: 0.5rem;
  font-size: 1.1875rem;
  font-weight: 500;
  color: var(--teal);
}

.product-intro {
  max-width: 36em;
  margin-top: 1.25rem;
  color: var(--muted);
}

.product-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 2rem;
  margin: 1.75rem 0 0;
}

.product-facts div {
  padding-top: 0.75rem;
  border-top: 1px solid var(--line-light);
}

.product-facts dt {
  font-size: 0.875rem;
  color: var(--muted);
}

.product-facts dd {
  margin: 0.15rem 0 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.product-hero .button-primary {
  background: var(--ink);
  color: var(--on-dark);
}

.product-hero .button-primary:hover {
  background: var(--panel);
}

.button-outline {
  border-color: #ADC0B9;
  color: var(--text);
}

.button-outline:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.product-features {
  margin-top: clamp(2rem, 5vw, 3rem);
}

@media (min-width: 1000px) {
  .product-features {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.split-head {
  margin-bottom: 2rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.spec-table .spec-group th {
  padding: 2rem 0 0.6rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--signal);
  border-bottom: 1px solid var(--panel);
}

.spec-table tbody:first-child .spec-group th {
  padding-top: 0;
}

.spec-table th[scope="row"],
.spec-table td {
  padding: 0.85rem 1.5rem 0.85rem 0;
  border-bottom: 1px solid var(--panel);
  vertical-align: top;
}

.spec-table th[scope="row"] {
  width: 28%;
  font-weight: 500;
  color: var(--on-dark);
}

.spec-table td {
  color: var(--on-dark-muted);
}

@media (max-width: 640px) {
  .spec-table,
  .spec-table tbody,
  .spec-table tr,
  .spec-table th,
  .spec-table td {
    display: block;
    width: 100%;
  }

  .spec-table th[scope="row"] {
    width: 100%;
    padding-bottom: 0.1rem;
    border-bottom: 0;
  }

  .spec-table td {
    padding-top: 0;
  }
}

.product-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem 4rem;
  margin-top: clamp(2rem, 5vw, 3rem);
}

.product-column {
  padding-top: 1.25rem;
  border-top: 2px solid var(--text);
}

.product-column h3 {
  font-size: 1.25rem;
}

.product-column > p {
  max-width: 34em;
  margin-top: 0.6rem;
  color: var(--muted);
}

.product-sub {
  margin: 0.5rem 0 0;
}

.product-sub div {
  margin-top: 0.85rem;
  padding-left: 1rem;
  border-left: 2px solid var(--brand);
}

.product-sub dt {
  font-weight: 600;
}

.product-sub dd {
  margin: 0.15rem 0 0;
  color: var(--muted);
}

@media (max-width: 760px) {
  .product-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }
}

.cert-lead {
  margin-top: 1rem;
}

.cert-list {
  margin: 0;
}

.cert-list div {
  display: grid;
  grid-template-columns: minmax(0, 10rem) minmax(0, 1fr);
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-light);
}

.cert-list div:first-child {
  border-top: 1px solid var(--line-light);
}

.cert-list dt {
  color: var(--muted);
}

.cert-list dd {
  margin: 0;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 480px) {
  .cert-list div {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.1rem;
  }
}

.product-inquiry .prose {
  margin-top: 1rem;
}

/* ---------- Footer ---------- */

.site-footer {
  padding-block: 2rem;
  background: var(--ink);
  color: var(--on-dark-muted);
  font-size: 0.875rem;
}

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