:root {
  color-scheme: light;
  --background: #ffffff;
  --surface: #f6f7f8;
  --surface-strong: #eef0f2;
  --text: #111318;
  --text-secondary: #60656f;
  --line: #e2e5e9;
  --line-strong: #d2d6db;
  --brand: #c82241;
  --brand-dark: #a71934;
  --focus: #0b63ce;
  --site-width: 1120px;
  --reading-width: 760px;
  --radius-large: 22px;
  --radius-medium: 16px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  min-width: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.58;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

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

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(3rem, 7vw, 4.75rem);
  font-weight: 720;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 690;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
  font-weight: 680;
}

p {
  color: var(--text-secondary);
}

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

.site-shell {
  width: min(calc(100% - 40px), var(--site-width));
  margin-inline: auto;
}

.reading-width {
  width: min(calc(100% - 40px), var(--reading-width));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 11px 15px;
  border-radius: 10px;
  background: var(--text);
  color: white;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 150ms ease;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 18px;
  font-weight: 780;
  letter-spacing: 0.12em;
  line-height: 1;
  text-decoration: none;
}

.brand img {
  width: 37px;
  height: 36px;
  object-fit: contain;
}

.brand sup,
.footer-brand sup {
  margin-left: 1px;
  color: var(--brand);
  font-size: 0.52em;
  vertical-align: super;
}

.help-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 620;
  text-decoration: none;
}

.help-link:hover {
  color: var(--text);
}

.hero {
  padding: clamp(64px, 9vw, 112px) 0 0;
}

.hero-copy {
  margin-bottom: clamp(42px, 6vw, 64px);
  text-align: center;
}

.product-label,
.section-label {
  margin-bottom: 14px;
  color: var(--brand);
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.005em;
}

.hero-copy h1 {
  max-width: 840px;
  margin-inline: auto;
}

.hero-copy > p:last-child {
  max-width: 660px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  line-height: 1.5;
}

.video-block {
  margin-bottom: 0;
}

.video-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  background: #090a0c;
  box-shadow: 0 18px 55px rgba(17, 19, 24, 0.09);
  aspect-ratio: 16 / 9;
}

.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.video-meta {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.video-meta span {
  display: inline-flex;
  align-items: center;
}

.video-meta span + span::before {
  content: "";
  width: 3px;
  height: 3px;
  margin-inline: 12px;
  border-radius: 50%;
  background: #a4a8ae;
}

.video-disclosures {
  width: min(100%, var(--reading-width));
  margin-inline: auto;
  border-top: 1px solid var(--line);
}

.video-disclosures details {
  border-bottom: 1px solid var(--line);
}

.video-disclosures summary,
.accordion-list summary,
.care-disclosure > summary,
.warranty-disclosure > summary {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--text);
  font-size: 15px;
  font-weight: 630;
  list-style: none;
  cursor: pointer;
}

.video-disclosures summary::-webkit-details-marker,
.accordion-list summary::-webkit-details-marker,
.care-disclosure > summary::-webkit-details-marker,
.warranty-disclosure > summary::-webkit-details-marker {
  display: none;
}

.video-disclosures summary::after,
.accordion-list summary::after,
.care-disclosure > summary::after,
.warranty-disclosure > summary::after {
  content: "+";
  flex: 0 0 auto;
  color: #7a7f87;
  font-size: 21px;
  font-weight: 400;
  line-height: 1;
}

.video-disclosures details[open] summary::after,
.accordion-list details[open] summary::after,
.care-disclosure[open] > summary::after,
.warranty-disclosure[open] > summary::after {
  content: "−";
}

.video-disclosures details > p {
  margin: -2px 0 18px;
  font-size: 15px;
}

.video-disclosures a,
.inline-link {
  color: var(--brand-dark);
  font-weight: 620;
}

.timeline-list {
  display: grid;
  gap: 9px;
  margin: -2px 0 20px;
  padding: 0;
  list-style: none;
}

.timeline-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 15px;
}

.timeline-list time {
  color: var(--brand-dark);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}

.before-section {
  margin-top: 0;
  padding: clamp(36px, 5vw, 52px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.before-section h2 {
  margin-bottom: 30px;
  font-size: clamp(1.55rem, 3vw, 2rem);
}

.before-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.before-grid div {
  display: grid;
  gap: 5px;
}

.before-grid strong {
  font-size: 16px;
  font-weight: 650;
}

.before-grid span {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.5;
}

.steps-section {
  padding: clamp(56px, 8vw, 88px) 0;
}

.section-heading {
  margin-bottom: clamp(42px, 6vw, 62px);
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading.compact {
  margin-bottom: 34px;
}

.steps-disclosure {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.steps-disclosure > summary {
  min-height: 132px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 28px 0;
  list-style: none;
  cursor: pointer;
}

.steps-disclosure > summary::-webkit-details-marker {
  display: none;
}

.steps-disclosure[open] > summary {
  border-bottom: 1px solid var(--line);
}

.steps-summary-copy {
  display: grid;
}

.steps-summary-copy .section-label {
  display: block;
  margin-bottom: 7px;
}

.steps-summary-title {
  color: var(--text);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 690;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.steps-toggle {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  padding: 9px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 630;
}

.steps-toggle::after {
  content: "+";
  margin-left: 9px;
  font-size: 19px;
  font-weight: 400;
  line-height: 1;
}

.steps-disclosure[open] .steps-toggle::after {
  content: "−";
}

.when-open {
  display: none;
}

.steps-disclosure[open] .when-closed {
  display: none;
}

.steps-disclosure[open] .when-open {
  display: inline;
}

.steps-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-row {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(36px, 6vw, 74px);
  align-items: center;
  padding: clamp(40px, 6vw, 64px) 0;
  border-bottom: 1px solid var(--line);
}

.step-image {
  overflow: hidden;
  border-radius: var(--radius-medium);
  background: var(--surface-strong);
  aspect-ratio: 16 / 9;
}

.step-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.step-content {
  max-width: 500px;
}

.step-number {
  display: block;
  margin-bottom: 13px;
  color: var(--brand);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  font-weight: 680;
  letter-spacing: 0.05em;
}

.step-content p {
  max-width: 46ch;
  margin-bottom: 22px;
  font-size: 17px;
}

.parts-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px 20px;
  margin: 0 0 23px;
  padding: 0;
  color: var(--text-secondary);
  font-size: 15px;
  list-style: none;
}

.parts-list li {
  position: relative;
  padding-left: 22px;
}

.parts-list strong {
  position: absolute;
  left: 0;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.final-checks {
  display: grid;
  gap: 8px;
  margin: -4px 0 24px;
  padding: 0;
  color: var(--text-secondary);
  font-size: 15px;
  list-style: none;
}

.final-checks li {
  position: relative;
  padding-left: 24px;
}

.final-checks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 750;
}

.timestamp-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-dark);
  font-size: 15px;
  font-weight: 630;
  text-decoration: none;
}

.timestamp-link:hover,
.inline-link:hover {
  text-decoration: underline;
}

.timestamp-link span {
  font-size: 10px;
}

.step-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.step-help-link {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.step-help-link:hover {
  color: var(--brand-dark);
  text-decoration: underline;
}

.step-problem {
  margin: -2px 0 16px;
  padding: 14px 16px;
  border-left: 3px solid var(--brand);
  border-radius: 0 12px 12px 0;
  background: #fff4f6;
  color: #63303a;
  font-size: 14px !important;
  line-height: 1.55;
}

.step-problem strong {
  color: #541a25;
}

.featured-help-section {
  padding: clamp(72px, 9vw, 104px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  scroll-margin-top: 24px;
}

.featured-help-section .base-help-card {
  margin-bottom: 0;
  box-shadow: 0 18px 50px rgba(17, 19, 24, 0.06);
}

.help-section {
  padding: clamp(80px, 11vw, 120px) 0;
  background: var(--surface);
}

.base-help-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: clamp(32px, 6vw, 52px);
  align-items: center;
  margin-bottom: 48px;
  padding: clamp(28px, 5vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  background: var(--background);
  scroll-margin-top: 24px;
}

.base-help-copy h2,
.base-help-copy h3 {
  margin-bottom: 14px;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.base-help-copy > p:not(.issue-label, .base-help-tip, .base-safety-note) {
  margin-bottom: 22px;
}

.issue-label {
  margin-bottom: 10px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 680;
}

.base-help-steps {
  display: grid;
  gap: 12px;
  margin: 0 0 22px;
  padding: 0;
  color: var(--text-secondary);
  font-size: 15px;
  list-style: none;
}

.base-help-steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.base-help-steps li > span {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--text);
  font-size: 12px;
  font-weight: 680;
}

.base-help-tip,
.base-safety-note {
  margin: 0;
  padding: 13px 15px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
}

.base-help-tip {
  background: var(--surface);
}

.base-safety-note {
  margin-top: 10px;
  background: #fff2f4;
  color: #6d1c2c;
}

.base-video-card {
  margin: 0;
}

.portrait-video-frame {
  width: min(100%, 270px);
  overflow: hidden;
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #090a0c;
  box-shadow: 0 14px 34px rgba(17, 19, 24, 0.11);
  aspect-ratio: 9 / 16;
}

.portrait-video-frame video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.base-video-card figcaption {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 13px;
  text-align: center;
}

.accordion-list {
  border-top: 1px solid var(--line-strong);
}

.accordion-list details {
  border-bottom: 1px solid var(--line-strong);
}

.accordion-list summary {
  min-height: 66px;
  font-size: 17px;
}

.accordion-list details > p {
  max-width: 650px;
  margin: -3px 42px 22px 0;
}

.accordion-list .inline-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  margin: -8px 0 18px;
}

.care-disclosure {
  margin-top: 30px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.care-disclosure > summary {
  min-height: 66px;
  font-size: 17px;
}

.care-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 50px;
  padding: 4px 0 30px;
}

.care-grid h3 {
  font-size: 18px;
  letter-spacing: -0.015em;
}

.care-grid ul,
.care-grid ol {
  margin: 0;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 15px;
}

.care-grid li + li {
  margin-top: 6px;
}

.support-section {
  padding: clamp(88px, 12vw, 140px) 0;
  text-align: center;
}

.support-section h2 {
  max-width: 640px;
  margin-inline: auto;
}

.support-section > p:not(.section-label) {
  max-width: 620px;
  margin: 0 auto 30px;
  font-size: 18px;
}

.primary-button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--brand);
  color: white;
  font-size: 16px;
  font-weight: 650;
  text-decoration: none;
  transition: background-color 150ms ease, transform 150ms ease;
}

.primary-button:hover {
  background: var(--brand-dark);
  transform: translateY(-1px);
}

.support-email {
  width: fit-content;
  min-height: 44px;
  display: flex;
  align-items: center;
  margin: 10px auto 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.warranty-disclosure {
  max-width: 620px;
  margin: 48px auto 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.warranty-disclosure > p {
  margin: -2px 38px 20px 0;
  font-size: 15px;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  font-size: 14px;
}

.footer-brand img {
  width: 28px;
  height: 27px;
  object-fit: contain;
}

.footer-inner p {
  margin: 0;
  color: #858a92;
  font-size: 13px;
}

@media (max-width: 820px) {
  body {
    font-size: 16px;
  }

  .hero {
    padding-top: 62px;
  }

  .hero-copy {
    margin-bottom: 40px;
  }

  .step-row {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .step-content {
    max-width: 620px;
  }

  .base-help-card {
    grid-template-columns: 1fr;
  }

  .portrait-video-frame {
    width: min(100%, 300px);
  }

  .before-grid {
    gap: 20px;
  }
}

@media (max-width: 620px) {
  .site-shell,
  .reading-width {
    width: min(calc(100% - 40px), var(--site-width));
  }

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

  .brand {
    font-size: 16px;
  }

  .brand img {
    width: 33px;
    height: 32px;
  }

  .hero {
    padding-top: 52px;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-copy h1 {
    font-size: clamp(2.55rem, 13vw, 3.4rem);
  }

  .hero-copy > p:last-child {
    font-size: 17px;
  }

  .video-frame {
    border-radius: 15px;
  }

  .video-meta {
    justify-content: flex-start;
  }

  .video-meta span + span::before {
    margin-inline: 9px;
  }

  .before-section {
    margin-top: 0;
  }

  .before-grid,
  .care-grid {
    grid-template-columns: 1fr;
  }

  .before-grid {
    gap: 22px;
  }

  .before-grid div {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
  }

  .before-grid div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .steps-section {
    padding-top: 52px;
    padding-bottom: 60px;
  }

  .steps-disclosure > summary {
    min-height: 118px;
    gap: 16px;
    padding: 24px 0;
  }

  .steps-toggle {
    padding-inline: 12px;
  }

  .featured-help-section {
    padding: 64px 0;
  }

  .step-row {
    padding: 34px 0 42px;
  }

  .step-content p {
    font-size: 16px;
  }

  .parts-list {
    grid-template-columns: 1fr;
  }

  .help-section {
    padding: 72px 0;
  }

  .base-help-card {
    margin-bottom: 36px;
    padding: 24px 20px;
  }

  .featured-help-section .base-help-card {
    margin-bottom: 0;
  }

  .care-grid {
    gap: 28px;
  }

  .support-section {
    padding-top: 80px;
    padding-bottom: 88px;
  }

  .support-section > p:not(.section-label) {
    font-size: 16px;
  }

  .primary-button {
    width: 100%;
  }

  .footer-inner {
    min-height: 112px;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 360px) {
  .site-shell,
  .reading-width {
    width: min(calc(100% - 32px), var(--site-width));
  }

  .video-meta {
    gap: 6px 0;
    font-size: 13px;
  }

  .steps-disclosure > summary {
    align-items: flex-start;
    flex-direction: column;
  }
}

@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;
  }
}

@media (forced-colors: active) {
  .video-frame,
  .primary-button {
    border: 1px solid ButtonText;
  }
}

@media print {
  @page {
    margin: 0.6in;
  }

  body {
    font-size: 10.5pt;
  }

  .site-header,
  .video-block,
  .base-video-card,
  .steps-disclosure > summary,
  .timestamp-link,
  .primary-button,
  .site-footer {
    display: none !important;
  }

  .hero {
    padding: 0 0 24px;
  }

  .hero-copy {
    margin-bottom: 0;
    text-align: left;
  }

  .before-section,
  .steps-section,
  .help-section,
  .support-section {
    padding-top: 24px;
    padding-bottom: 24px;
  }

  .step-row {
    grid-template-columns: 2.3in 1fr;
    gap: 24px;
    padding: 22px 0;
    break-inside: avoid;
  }

  details:not([open]) > :not(summary) {
    display: block !important;
  }

  summary::after {
    display: none !important;
  }
}