:root {
  color-scheme: light;
  --ink: #18211d;
  --muted: #63716b;
  --paper: #f6f4ed;
  --panel: #ffffff;
  --bamboo: #216849;
  --bamboo-dark: #173b2e;
  --leaf: #9fbd55;
  --gold: #c8982f;
  --chili: #b84a31;
  --blue: #2f6070;
  --line: rgba(24, 33, 29, 0.14);
  --soft-line: rgba(24, 33, 29, 0.08);
  --shadow: 0 18px 50px rgba(23, 59, 46, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
}

body.modal-open {
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: inherit;
}

button,
.button {
  cursor: pointer;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  min-height: 4.15rem;
  padding: 0.72rem clamp(1rem, 4vw, 4rem);
  background: rgba(246, 244, 237, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand-lockup,
.site-header nav,
.hero-actions,
.controls,
.tags,
.product-heading,
.update-row,
.results-meta {
  display: flex;
  align-items: center;
}

.brand-lockup {
  gap: 0.7rem;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  color: #fff;
  background: var(--bamboo-dark);
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(23, 59, 46, 0.24);
}

.site-header nav {
  justify-content: center;
  gap: 1.25rem;
}

.site-header nav a {
  position: relative;
  padding: 0.35rem 0;
  color: var(--muted);
  font-size: 0.91rem;
  text-decoration: none;
}

.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--chili);
  content: "";
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
}

.apply-button,
.reset-button {
  min-height: 2.15rem;
  padding: 0.45rem 0.72rem;
  border: 0;
  border-radius: 6px;
  font-weight: 900;
}

.apply-button {
  color: #fff;
  background: var(--chili);
  box-shadow: 0 8px 20px rgba(184, 74, 49, 0.2);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(22rem, 0.95fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5.5rem);
  min-height: calc(100vh - 4.15rem);
  max-width: 92rem;
  margin: 0 auto;
  padding: 3.6rem clamp(1rem, 4vw, 4.5rem) 3rem;
}

.hero-copy {
  max-width: 49rem;
}

.kicker,
.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--chili);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.flow-title {
  margin: 0;
  max-width: 12ch;
  color: transparent;
  background: linear-gradient(90deg, #173b2e 0%, #173b2e 25%, #e9c95f 39%, #ffffff 48%, #bf5538 57%, #173b2e 71%, #173b2e 100%);
  background-size: 260% 100%;
  background-clip: text;
  font-size: 4.7rem;
  line-height: 1.02;
  letter-spacing: 0;
  text-wrap: balance;
  -webkit-background-clip: text;
  animation: titleFlow 5.5s ease-in-out infinite;
}

@keyframes titleFlow {
  0%,
  100% { background-position: 0 50%; }
  50% { background-position: 100% 50%; }
}

.site-intro,
.section-head > p,
.method-intro > p,
.calculator > div > p,
.faq p,
.modal-intro {
  color: var(--muted);
  line-height: 1.8;
}

.site-intro {
  max-width: 46rem;
  margin: 1.4rem 0 0;
  color: #34433c;
  font-size: 1.08rem;
}

.update-row {
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.15rem;
  color: #3f4e47;
  font-size: 0.9rem;
}

.live-dot {
  width: 0.55rem;
  height: 0.55rem;
  background: #3d9b65;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(61, 155, 101, 0.45);
  animation: livePulse 1.9s ease-out infinite;
}

@keyframes livePulse {
  70% { box-shadow: 0 0 0 0.55rem rgba(61, 155, 101, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 155, 101, 0); }
}

.evidence-note {
  margin-left: 0.35rem;
  padding-left: 0.8rem;
  border-left: 1px solid var(--line);
  color: var(--muted);
}

.hero-actions {
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.65rem;
}

.button {
  display: inline-flex;
  min-height: 2.85rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.15rem;
  border: 0;
  border-radius: 6px;
  font-weight: 900;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.primary {
  color: #fff;
  background: var(--bamboo-dark);
  box-shadow: 0 12px 26px rgba(23, 59, 46, 0.22);
}

.ghost {
  color: var(--bamboo-dark);
  background: #fff;
  border: 1px solid var(--line);
}

.hero-visual {
  position: relative;
  min-height: 34rem;
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms ease;
}

.hero-visual:hover img {
  transform: scale(1.025);
}

.hero-visual figcaption {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  padding: 0.85rem 1rem;
  color: #fff;
  background: rgba(18, 33, 27, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  font-size: 0.88rem;
  line-height: 1.5;
  backdrop-filter: blur(10px);
}

.hero-visual figcaption span {
  display: block;
  margin-bottom: 0.2rem;
  color: #d8e99f;
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bamboo-dark);
  color: #fff;
}

.trust-strip div {
  display: grid;
  min-height: 7rem;
  place-content: center;
  padding: 1.2rem;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.trust-strip div:last-child {
  border-right: 0;
}

.trust-strip strong {
  color: #d7e89d;
  font-size: 1.55rem;
}

.trust-strip span {
  margin-top: 0.25rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.section {
  max-width: 88rem;
  margin: 0 auto;
  padding: 5.5rem clamp(1rem, 4vw, 4rem);
}

.ranking-section {
  max-width: 96rem;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 34rem);
  gap: 2rem;
  align-items: end;
  margin-bottom: 2rem;
}

h2,
h3,
p {
  text-wrap: pretty;
}

h2 {
  margin: 0;
  font-size: 2.25rem;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  letter-spacing: 0;
}

.section-head > p {
  margin: 0;
  font-size: 0.92rem;
}

.controls {
  display: grid;
  grid-template-columns: minmax(16rem, 1.7fr) repeat(2, minmax(11rem, 0.8fr)) auto;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  padding: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(23, 59, 46, 0.06);
}

.search-box,
.select-box {
  display: grid;
  gap: 0.38rem;
}

.search-box span,
.select-box span {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  color: var(--ink);
  background: #fbfbf8;
  border: 1px solid var(--line);
  border-radius: 5px;
  outline: 0;
}

input,
select {
  min-height: 2.65rem;
  padding: 0.55rem 0.7rem;
}

textarea {
  min-height: 6rem;
  padding: 0.7rem;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--bamboo);
  box-shadow: 0 0 0 3px rgba(33, 104, 73, 0.12);
}

.reset-button {
  align-self: end;
  color: var(--bamboo-dark);
  background: #edf2ea;
}

.results-meta {
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.product-list {
  display: grid;
  gap: 1rem;
}

.product-card {
  display: grid;
  grid-template-columns: 5.4rem minmax(0, 1fr) minmax(15.5rem, 18rem);
  gap: 1.5rem;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(23, 59, 46, 0.06);
  opacity: 0;
  animation: cardReveal 520ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: var(--delay);
}

.product-card.is-top {
  border-color: rgba(200, 152, 47, 0.55);
  box-shadow: 0 20px 54px rgba(128, 94, 22, 0.14);
}

@keyframes cardReveal {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.rank-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 1.4rem 0.5rem;
  color: var(--muted);
  background: #eef1eb;
  border-right: 1px solid var(--soft-line);
}

.rank-block.top {
  color: #fff;
  background: var(--chili);
}

.rank-block span {
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.09em;
}

.rank-block strong {
  margin: 0.1rem 0;
  font-size: 2.65rem;
  line-height: 1;
}

.rank-block small {
  font-size: 0.7rem;
  white-space: nowrap;
}

.product-main {
  min-width: 0;
  padding: 1.5rem 0;
}

.product-heading {
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.brand-name {
  color: var(--chili);
  font-size: 0.76rem;
  font-weight: 900;
}

.product-heading h3 {
  margin: 0.25rem 0 0;
  font-size: 1.42rem;
  line-height: 1.3;
}

.maker {
  margin: 0.38rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.compare-toggle {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.58rem;
  color: var(--bamboo-dark);
  background: #f2f5ef;
  border: 1px solid var(--line);
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 800;
}

.compare-toggle input {
  width: 1rem;
  min-height: 0;
  height: 1rem;
  margin: 0;
  accent-color: var(--bamboo);
}

.tags {
  flex-wrap: wrap;
  gap: 0.42rem;
  margin-top: 1rem;
}

.tags span {
  padding: 0.28rem 0.5rem;
  color: #44544c;
  background: #f0f3ed;
  border: 1px solid rgba(24, 33, 29, 0.07);
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 800;
}

.is-top .tags span:first-child {
  color: #fff;
  background: var(--chili);
}

.product-summary {
  margin: 1rem 0;
  color: #405047;
  font-size: 0.92rem;
  line-height: 1.75;
}

.top-reasons {
  margin: 1rem 0;
  padding: 1rem 0;
  border-top: 1px solid rgba(200, 152, 47, 0.35);
  border-bottom: 1px solid rgba(200, 152, 47, 0.35);
}

.top-reasons > strong {
  color: #8a6010;
  font-size: 0.82rem;
}

.top-reasons ul {
  display: grid;
  gap: 0.4rem;
  margin: 0.65rem 0 0;
  padding-left: 1.15rem;
  color: #4a4b3e;
  font-size: 0.84rem;
  line-height: 1.55;
}

.product-facts {
  display: grid;
  grid-template-columns: 0.8fr 1.1fr 1fr;
  border-top: 1px solid var(--soft-line);
  border-bottom: 1px solid var(--soft-line);
}

.product-facts div {
  min-width: 0;
  padding: 0.85rem 0.8rem;
  border-right: 1px solid var(--soft-line);
}

.product-facts div:first-child {
  padding-left: 0;
}

.product-facts div:last-child {
  border-right: 0;
}

.product-facts span,
.product-facts strong {
  display: block;
}

.product-facts span {
  color: var(--muted);
  font-size: 0.68rem;
}

.product-facts strong {
  margin-top: 0.27rem;
  font-size: 0.8rem;
  line-height: 1.45;
}

.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
  margin-top: 1rem;
}

.fit-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.fit-grid b {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--ink);
}

.source-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  text-underline-offset: 3px;
}

.score-panel {
  align-self: stretch;
  padding: 1.5rem 1.4rem 1.5rem 0;
  border-left: 1px solid var(--soft-line);
}

.total-score {
  display: flex;
  align-items: baseline;
  margin-bottom: 1.1rem;
  padding-left: 1.35rem;
}

.total-score span {
  margin-right: auto;
  color: var(--muted);
  font-size: 0.7rem;
}

.total-score strong {
  color: var(--bamboo-dark);
  font-size: 2rem;
}

.total-score small {
  color: var(--muted);
  font-size: 0.65rem;
}

.metric {
  margin: 0.8rem 0 0 1.35rem;
}

.metric > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.metric b {
  color: var(--ink);
}

.metric-track {
  display: block;
  height: 0.34rem;
  margin-top: 0.38rem;
  overflow: hidden;
  background: #e5e9e3;
  border-radius: 4px;
}

.metric-track i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--bamboo), var(--leaf));
  border-radius: inherit;
  animation: meterFill 750ms ease both;
  transform-origin: left;
}

@keyframes meterFill {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.empty-state {
  display: grid;
  min-height: 14rem;
  place-content: center;
  gap: 0.35rem;
  text-align: center;
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: 8px;
}

.empty-state span {
  color: var(--muted);
}

.method-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 4rem;
  padding: 5.5rem clamp(1rem, 6vw, 7rem);
  color: #fff;
  background: #1c3029;
}

.method-band .eyebrow {
  color: #e8bd5a;
}

.method-intro > p {
  color: rgba(255, 255, 255, 0.68);
}

.editor-note {
  margin-top: 1.5rem;
  padding: 1rem 0;
  color: rgba(255, 255, 255, 0.72);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.84rem;
  line-height: 1.7;
}

.editor-note strong {
  display: block;
  margin-bottom: 0.25rem;
  color: #fff;
}

.method-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.method-list article {
  min-height: 12rem;
  padding: 1.3rem;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.method-list span {
  color: #d7e89d;
  font-size: 1.5rem;
  font-weight: 900;
}

.method-list h3 {
  margin: 0.7rem 0 0.4rem;
  font-size: 1rem;
}

.method-list p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.82rem;
  line-height: 1.65;
}

.calculator {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: 4rem;
  align-items: start;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.calc-grid label,
.apply-form label {
  display: grid;
  gap: 0.42rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.calc-output {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem 1rem;
  margin-top: 0.25rem;
  padding: 1.15rem;
  color: #fff;
  background: var(--bamboo-dark);
  border-radius: 6px;
}

.calc-output span {
  font-size: 0.82rem;
}

.calc-output b {
  display: block;
  margin-top: 0.25rem;
  color: #d7e89d;
  font-size: 1.15rem;
}

.calc-output > strong {
  grid-column: 1 / -1;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.faq details {
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.faq p {
  max-width: 66rem;
  margin-bottom: 0;
}

.sources {
  padding-top: 3rem;
  border-top: 1px solid var(--line);
}

.sources ol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style-position: inside;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.sources li {
  min-height: 8rem;
  padding: 1.15rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.sources a {
  color: var(--blue);
  font-weight: 900;
  text-underline-offset: 3px;
}

.sources li span {
  display: block;
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.disclaimer {
  margin: 1.4rem 0 0;
  padding: 1rem 1.1rem;
  color: #68492f;
  background: #fff3df;
  border-left: 3px solid var(--gold);
  font-size: 0.82rem;
  line-height: 1.7;
}

.compare-bar {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  left: 1.2rem;
  z-index: 24;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 62rem;
  margin: 0 auto;
  padding: 0.8rem 0.9rem 0.8rem 1.1rem;
  color: #fff;
  background: rgba(24, 33, 29, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
  transition: opacity 180ms ease, transform 180ms ease;
  backdrop-filter: blur(14px);
}

.compare-bar.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.compare-bar div {
  min-width: 0;
}

.compare-bar strong,
.compare-bar span {
  display: block;
}

.compare-bar span {
  max-width: 44rem;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.73rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  padding: 1rem;
  place-items: center;
  visibility: hidden;
  background: rgba(13, 21, 17, 0.68);
  opacity: 0;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.modal-backdrop.open {
  visibility: visible;
  opacity: 1;
}

.modal {
  position: relative;
  width: min(100%, 38rem);
  max-height: calc(100vh - 2rem);
  padding: 1.7rem;
  overflow: auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.28);
  transform: translateY(14px);
  transition: transform 180ms ease;
}

.open .modal {
  transform: translateY(0);
}

.wide-modal {
  width: min(100%, 68rem);
}

.modal h2 {
  padding-right: 2.2rem;
  font-size: 1.75rem;
}

.modal-close,
.to-top {
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
}

.modal-close {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 2.25rem;
  height: 2.25rem;
  color: var(--ink);
  background: #eef1eb;
  font-size: 1.25rem;
}

.apply-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-top: 1.2rem;
}

.full {
  grid-column: 1 / -1;
}

.success-panel {
  padding: 1.2rem 0 0.4rem;
  text-align: center;
}

.success-panel h2 {
  padding: 0;
}

.success-panel p {
  color: var(--muted);
  line-height: 1.7;
}

.success-icon {
  display: grid;
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  place-items: center;
  color: #fff;
  background: var(--bamboo);
  border-radius: 50%;
  font-size: 1.65rem;
}

.comparison-scroll {
  margin-top: 1.2rem;
  overflow-x: auto;
}

.comparison-scroll table {
  width: 100%;
  min-width: 42rem;
  border-collapse: collapse;
}

.comparison-scroll th,
.comparison-scroll td {
  padding: 0.85rem;
  text-align: left;
  border: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.5;
}

.comparison-scroll thead th {
  color: #fff;
  background: var(--bamboo-dark);
}

.comparison-scroll thead th:first-child {
  width: 8rem;
}

.comparison-scroll thead span {
  display: block;
  color: #d7e89d;
  font-size: 0.7rem;
}

.comparison-scroll tbody th {
  background: #f1f3ee;
}

.to-top {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 22;
  width: 2.7rem;
  height: 2.7rem;
  color: #fff;
  background: var(--chili);
  box-shadow: 0 10px 24px rgba(184, 74, 49, 0.24);
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.6rem);
  transition: opacity 180ms ease, transform 180ms ease;
}

.to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .flow-title {
    font-size: 4rem;
  }

  .product-card {
    grid-template-columns: 4.8rem minmax(0, 1fr);
  }

  .score-panel {
    grid-column: 2;
    display: grid;
    grid-template-columns: 1.2fr repeat(4, 1fr);
    gap: 0.8rem;
    margin-top: -0.4rem;
    padding: 0 1.5rem 1.5rem 0;
    border-left: 0;
  }

  .total-score,
  .metric {
    margin: 0;
    padding: 0;
  }

  .total-score {
    display: block;
  }

  .total-score span {
    display: block;
  }
}

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

  .site-header nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 3rem;
  }

  .flow-title {
    max-width: 14ch;
    font-size: 3.5rem;
  }

  .hero-visual {
    min-height: 28rem;
  }

  .section-head,
  .method-band,
  .calculator {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

  .search-box {
    grid-column: 1 / -1;
  }

  .reset-button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .brand-lockup > span:last-child {
    display: none;
  }

  .hero {
    padding-top: 2.3rem;
  }

  .flow-title {
    font-size: 2.75rem;
  }

  .site-intro {
    font-size: 1rem;
  }

  .hero-visual {
    min-height: 22rem;
  }

  .trust-strip {
    grid-template-columns: 1fr 1fr;
  }

  .trust-strip div:nth-child(2) {
    border-right: 0;
  }

  .trust-strip div:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .section,
  .method-band {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .controls,
  .calc-grid,
  .apply-form,
  .method-list,
  .sources ol {
    grid-template-columns: 1fr;
  }

  .search-box,
  .reset-button,
  .full {
    grid-column: auto;
  }

  .results-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-card {
    grid-template-columns: 4.15rem minmax(0, 1fr);
    gap: 0;
  }

  .rank-block {
    padding-top: 1.1rem;
  }

  .rank-block strong {
    font-size: 2.1rem;
  }

  .product-main {
    padding: 1.15rem;
  }

  .product-heading {
    display: grid;
  }

  .compare-toggle {
    justify-self: start;
  }

  .product-facts,
  .fit-grid {
    grid-template-columns: 1fr;
  }

  .product-facts div,
  .product-facts div:first-child {
    padding: 0.7rem 0;
    border-right: 0;
    border-bottom: 1px solid var(--soft-line);
  }

  .product-facts div:last-child {
    border-bottom: 0;
  }

  .score-panel {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem 1rem;
    margin: 0;
    padding: 1rem 1.15rem 1.2rem;
    background: #f3f5f0;
    border-top: 1px solid var(--soft-line);
  }

  .total-score {
    grid-column: 1 / -1;
  }

  .calc-output {
    grid-template-columns: 1fr;
  }

  .calc-output > strong {
    grid-column: auto;
  }

  .compare-bar {
    align-items: stretch;
    flex-direction: column;
  }

  .compare-bar .button {
    width: 100%;
  }

  .modal {
    padding: 1.3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}