:root {
  color-scheme: dark;
  --ink: #ffffff;
  --muted: #777777;
  --line: #323232;
  --surface: #000000;
  --soft: #111111;
  --raised: #232323;
  --nav-background: #323232;
  --nav-ink: #ababab;
  --accent: #ff8800;
  --accent-dark: #d67200;
  --info: #5dc4f5;
  --input-background: #fbfbfb;
  --input-ink: #555555;
  --input-line: #aaaaaa;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  font-family: "Open Sans", "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--surface);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.shell {
  width: min(1160px, calc(100% - 48px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 8px 14px;
  color: #fff;
  background: var(--accent-dark);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(50, 50, 50, 0.95);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 10px;
  box-shadow: 0 7px 18px rgba(255, 136, 0, 0.24);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.main-nav a {
  color: var(--nav-ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--accent);
}

.main-nav .nav-register {
  padding: 8px 15px;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 9px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 86px;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 136, 0, 0.14), transparent 28%),
    linear-gradient(180deg, var(--soft) 0%, var(--surface) 78%);
}

.hero::before {
  content: "";
  position: absolute;
  top: 42px;
  right: -110px;
  width: 410px;
  height: 410px;
  border: 1px solid rgba(255, 136, 0, 0.16);
  border-radius: 50%;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(480px, 1.06fr);
  align-items: center;
  gap: 76px;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy .eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
}

.hero-copy .eyebrow span {
  width: 20px;
  height: 2px;
  background: var(--accent);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 650px;
  margin: 0;
  font-size: clamp(44px, 5vw, 68px);
  line-height: 1.12;
  letter-spacing: -0.055em;
}

.hero-description {
  max-width: 620px;
  margin: 25px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button-primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 12px 26px rgba(255, 136, 0, 0.22);
}

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

.button-secondary {
  color: var(--ink);
  background: var(--raised);
  border-color: var(--line);
}

.button-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.button-disabled {
  color: var(--muted);
  background: var(--raised);
  cursor: not-allowed;
}

.button-wide {
  min-width: 210px;
}

.hero-facts {
  display: flex;
  gap: 30px;
  margin: 38px 0 0;
}

.hero-facts div {
  padding-left: 13px;
  border-left: 2px solid var(--accent);
}

.hero-facts dt {
  color: var(--muted);
  font-size: 12px;
}

.hero-facts dd {
  margin: 1px 0 0;
  font-size: 13px;
  font-weight: 700;
}

.product-preview {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--soft);
  box-shadow: var(--shadow);
  transform: perspective(1200px) rotateY(-3deg) rotateX(1deg);
}

.preview-bar {
  height: 43px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: var(--nav-background);
}

.preview-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--nav-ink);
}

.preview-bar strong {
  margin-left: 10px;
  color: var(--nav-ink);
  font-size: 10px;
  letter-spacing: 0.04em;
}

.preview-body {
  min-height: 350px;
  display: grid;
  grid-template-columns: 58px 1fr;
}

.preview-body aside {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding-top: 24px;
  background: var(--soft);
}

.preview-body aside i {
  width: 18px;
  height: 18px;
  border: 2px solid var(--muted);
  border-radius: 5px;
}

.preview-body aside i.active {
  border-color: var(--accent);
  background: rgba(255, 136, 0, 0.22);
}

.preview-content {
  padding: 27px;
  background: #101010;
}

.preview-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-heading small,
.preview-heading b {
  display: block;
}

.preview-heading small {
  color: var(--muted);
  font-size: 10px;
}

.preview-heading b {
  font-size: 18px;
}

.preview-heading > span {
  padding: 5px 10px;
  color: var(--info);
  background: rgba(93, 196, 245, 0.12);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
}

.device-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 22px;
}

.device-card,
.run-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--raised);
}

.device-card i {
  width: 28px;
  height: 22px;
  display: block;
  margin-bottom: 22px;
  border: 2px solid var(--accent);
  border-radius: 4px;
}

.device-card strong,
.device-card small {
  display: block;
}

.device-card strong {
  font-size: 11px;
}

.device-card small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 9px;
}

.run-card {
  display: grid;
  grid-template-columns: 0.4fr 1fr;
  align-items: end;
  gap: 18px;
  margin-top: 12px;
}

.run-card span,
.run-card strong {
  display: block;
}

.run-card span {
  color: var(--muted);
  font-size: 9px;
}

.run-card strong {
  font-size: 27px;
}

.run-lines {
  height: 62px;
  display: flex;
  align-items: end;
  gap: 7px;
}

.run-lines i {
  flex: 1;
  height: 42%;
  border-radius: 3px 3px 0 0;
  background: #6f3d08;
}

.run-lines i:nth-child(2) {
  height: 68%;
}

.run-lines i:nth-child(3) {
  height: 51%;
}

.run-lines i:nth-child(4) {
  height: 88%;
  background: var(--accent);
}

.run-lines i:nth-child(5) {
  height: 74%;
}

.section {
  padding: 92px 0;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 42px;
}

.section-heading h2,
.download-card h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.22;
  letter-spacing: -0.04em;
}

.section-heading > p:last-child,
.download-card > div > p {
  margin: 15px 0 0;
  color: var(--muted);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.capability-card {
  min-height: 260px;
  padding: 30px 27px;
  border-right: 1px solid var(--line);
}

.capability-card:last-child {
  border-right: 0;
}

.feature-index {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.capability-card h3 {
  margin: 70px 0 9px;
  font-size: 20px;
}

.capability-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.download-section {
  padding: 70px 0;
  background: var(--soft);
}

.download-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 70px;
  padding: 54px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--raised);
  box-shadow: var(--shadow);
}

.version-chip {
  display: inline-flex;
  margin-top: 22px;
  padding: 6px 12px;
  color: var(--accent);
  background: rgba(255, 136, 0, 0.12);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 650;
}

.download-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.download-action small {
  color: var(--muted);
}

.community-section {
  background: var(--surface);
}

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

.community-card {
  display: grid;
  grid-template-columns: 142px 1fr;
  align-items: center;
  gap: 23px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: var(--raised);
}

.qr-frame {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 8px;
  border: 1px solid var(--input-line);
  border-radius: 12px;
  background: var(--input-background);
}

.qr-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}

.qr-placeholder {
  display: grid;
  place-items: center;
  gap: 8px;
  color: var(--input-ink);
  text-align: center;
  font-size: 11px;
}

.qr-placeholder span {
  width: 48px;
  height: 48px;
  border: 7px double var(--input-line);
}

.community-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.community-card h3 {
  margin: 4px 0 10px;
  font-size: 18px;
}

.group-number {
  color: var(--accent);
  font-size: 19px;
  letter-spacing: 0.04em;
}

.community-placeholder {
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 34px;
  border: 1px dashed var(--muted);
  border-radius: 18px;
  background: var(--raised);
}

.placeholder-mark {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 18px;
  font-weight: 800;
}

.community-placeholder h3,
.community-placeholder p {
  margin: 0;
}

.community-placeholder p {
  color: var(--muted);
}

.site-footer {
  padding: 46px 0;
  color: var(--nav-ink);
  background: var(--soft);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: end;
  gap: 50px;
}

.footer-brand {
  color: #fff;
}

.footer-inner p {
  margin: 12px 0 0;
  font-size: 13px;
}

.footer-inner nav {
  display: flex;
  gap: 22px;
}

.footer-inner nav a {
  color: var(--nav-ink);
  font-size: 13px;
  text-decoration: none;
}

.footer-inner small {
  white-space: nowrap;
}

a:focus-visible,
.button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(255, 136, 0, 0.35);
  outline-offset: 3px;
}

button.button {
  font: inherit;
  cursor: pointer;
}

button.button:disabled {
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.7;
  transform: none;
}

.registration-main {
  min-height: calc(100vh - 72px);
  padding: 76px 0 84px;
  background:
    radial-gradient(circle at 85% 12%, rgba(255, 136, 0, 0.14), transparent 26%),
    linear-gradient(180deg, var(--soft) 0%, var(--surface) 100%);
}

.register-shell {
  width: min(720px, calc(100% - 48px));
  max-width: 100%;
}

.registration-card {
  overflow: hidden;
  padding: clamp(28px, 6vw, 54px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--raised);
  box-shadow: var(--shadow);
}

.registration-heading {
  margin-bottom: 34px;
}

.registration-heading h1 {
  font-size: clamp(36px, 6vw, 50px);
}

.registration-heading > p:last-child {
  margin: 15px 0 0;
  color: var(--muted);
}

.registration-form {
  display: grid;
  gap: 22px;
}

.field-group {
  min-width: 0;
  display: grid;
  gap: 8px;
}

.field-group label {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.field-group small {
  color: var(--muted);
  font-size: 12px;
}

.registration-form input {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 11px 13px;
  color: var(--input-ink);
  border: 1px solid var(--input-line);
  border-radius: 10px;
  background: var(--input-background);
  font: inherit;
  line-height: 1.4;
}

.registration-form input:hover {
  border-color: var(--nav-ink);
}

.registration-form input:focus {
  border-color: var(--accent);
}

.verification-row {
  min-width: 0;
  display: flex;
  align-items: stretch;
  gap: 10px;
}

.verification-row input {
  flex: 1 1 auto;
}

.verification-button {
  flex: 0 0 auto;
  min-width: 142px;
  white-space: nowrap;
}

.form-notice {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 15px;
  border: 1px solid;
  border-radius: 10px;
  font-size: 14px;
}

.form-notice[hidden] {
  display: none;
}

.form-notice p {
  margin: 0;
}

.form-notice-success {
  color: var(--info);
  border-color: rgba(93, 196, 245, 0.45);
  background: var(--soft);
}

.form-notice-error {
  color: #ff8b8b;
  border-color: #7a3030;
  background: #2a1111;
}

.notice-dismiss {
  flex: 0 0 auto;
  padding: 0 3px;
  color: currentColor;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 21px;
  line-height: 1;
  cursor: pointer;
}

.registration-submit {
  width: 100%;
  margin-top: 2px;
}

.registration-footnote {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.registration-footnote a {
  color: var(--accent);
  font-weight: 650;
}

@media (max-width: 900px) {
  .main-nav a:not(.nav-register) {
    display: none;
  }

  .hero {
    padding-top: 70px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .product-preview {
    width: min(620px, 100%);
    transform: none;
  }

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

  .capability-card:nth-child(2) {
    border-right: 0;
  }

  .capability-card:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .download-card {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .download-action {
    align-items: flex-start;
  }

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

  .footer-inner {
    grid-template-columns: 1fr auto;
  }

  .footer-inner small {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 30px, 1160px);
  }

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

  .main-nav {
    gap: 0;
  }

  .hero {
    padding: 56px 0 64px;
  }

  h1 {
    font-size: clamp(39px, 12vw, 52px);
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-facts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .product-preview {
    border-radius: 13px;
  }

  .preview-body {
    min-height: 300px;
    grid-template-columns: 44px 1fr;
  }

  .preview-content {
    padding: 18px 14px;
  }

  .device-card,
  .run-card {
    padding: 13px;
  }

  .run-card {
    grid-template-columns: 0.5fr 1fr;
  }

  .section {
    padding: 68px 0;
  }

  .capability-grid,
  .community-grid {
    grid-template-columns: 1fr;
  }

  .capability-card,
  .capability-card:nth-child(2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .capability-card:last-child {
    border-bottom: 0;
  }

  .capability-card h3 {
    margin-top: 38px;
  }

  .download-card {
    padding: 30px 24px;
  }

  .download-action,
  .download-action .button {
    width: 100%;
  }

  .community-card {
    grid-template-columns: 116px 1fr;
    gap: 16px;
    padding: 16px;
  }

  .community-placeholder {
    align-items: flex-start;
  }

  .registration-main {
    min-height: calc(100vh - 64px);
    padding: 44px 0 56px;
  }

  .register-shell {
    width: min(100% - 30px, 720px);
  }

  .registration-card {
    border-radius: 16px;
  }

  .verification-row {
    flex-direction: column;
  }

  .verification-row .button {
    width: 100%;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 28px;
  }

  .footer-inner small {
    grid-column: auto;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

/* 公开站点使用三段式深色导航；橙金色只承担品牌和交互强调。 */
.public-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid #4a4a4a;
  background: var(--nav-background);
}

.utility-bar {
  min-height: 30px;
  color: #8e8e8e;
  background: #1a1a1a;
  border-bottom: 1px solid #292929;
  font-size: 12px;
}

.utility-inner,
.utility-inner nav,
.primary-inner,
.header-navigation,
.footer-content,
.utility-inner form {
  display: flex;
  align-items: center;
}

.utility-inner {
  min-height: 30px;
  justify-content: space-between;
  gap: 20px;
}

.utility-inner nav {
  gap: 15px;
}

.utility-inner a,
.utility-button {
  color: #bcbcbc;
  background: transparent;
  border: 0;
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}

.utility-inner a:hover,
.utility-button:hover {
  color: var(--accent);
}

.utility-inner .utility-register {
  color: #ffc15d;
}

.primary-header {
  background: #242424;
}

.primary-inner {
  min-height: 82px;
  gap: 26px;
}

.brand-logo {
  flex: 0 0 auto;
  width: 198px;
  height: 64px;
  display: block;
  overflow: hidden;
  text-decoration: none;
}

.brand-logo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  object-position: left center;
}

.header-copy {
  display: grid;
  gap: 2px;
  padding-left: 24px;
  border-left: 1px solid #454545;
}

.header-copy strong {
  color: #eeeeee;
  font-size: 17px;
}

.header-copy span {
  color: #8c8c8c;
  font-size: 12px;
}

.secondary-nav {
  background: #323232;
  border-top: 1px solid #3d3d3d;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.24);
}

.header-navigation {
  min-height: 43px;
  gap: 0;
}

.header-navigation a {
  min-width: 116px;
  padding: 11px 22px;
  color: #c2c2c2;
  border-right: 1px solid #444444;
  font-size: 14px;
  font-weight: 700;
  line-height: 21px;
  text-align: center;
  text-decoration: none;
}

.header-navigation a:first-child {
  border-left: 1px solid #444444;
}

.header-navigation a:hover,
.header-navigation a:focus-visible {
  color: #ffffff;
  background: linear-gradient(180deg, #ff981c, #d56e00);
}

.public-main {
  min-height: 50vh;
  padding-bottom: 72px;
  background: #090909;
}

.advertisement-section {
  padding: 26px 0 22px;
  background: #111111;
  border-bottom: 1px solid #292929;
}

.banner-stack {
  display: grid;
  gap: 7px;
}

.flash-banner {
  position: relative;
  min-height: 54px;
  display: grid;
  grid-template-columns: 82px 1fr 30px;
  align-items: center;
  gap: 14px;
  overflow: hidden;
  padding: 8px 18px;
  color: #fff3c4;
  background:
    linear-gradient(90deg, rgba(121, 0, 0, 0.95), rgba(202, 28, 0, 0.92) 46%, rgba(98, 0, 0, 0.96)),
    #7c0000;
  border: 1px solid #ff5b25;
  box-shadow: inset 0 0 24px rgba(255, 190, 0, 0.14);
  text-decoration: none;
}

.flash-banner::before {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(110deg, transparent 20%, rgba(255, 222, 105, 0.24) 48%, transparent 72%);
  transform: translateX(-120%);
  animation: banner-sweep 3.5s ease-in-out infinite;
  pointer-events: none;
}

.flash-banner-2::before { animation-delay: 0.65s; }
.flash-banner-3::before { animation-delay: 1.3s; }
.flash-banner-4::before { animation-delay: 1.95s; }

.flash-tag {
  position: relative;
  color: #fff2a8;
  border-right: 1px solid rgba(255, 215, 104, 0.38);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.flash-copy {
  position: relative;
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.flash-copy strong {
  flex: 0 0 auto;
  color: #ffd866;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-shadow: 0 0 9px rgba(255, 209, 62, 0.5);
}

.flash-copy small {
  overflow: hidden;
  color: #ffd1bc;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flash-arrow {
  position: relative;
  color: #ffd75e;
  font-size: 29px;
  text-align: right;
}

@keyframes banner-sweep {
  0%, 45% { transform: translateX(-120%); }
  78%, 100% { transform: translateX(120%); }
}

.quick-strip {
  padding: 23px 0;
  background: #050505;
  border-bottom: 1px solid #292929;
}

.quick-strip .shell {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) 1.4fr;
  align-items: center;
  gap: 32px;
}

.quick-strip strong {
  color: var(--accent);
  font-size: 20px;
}

.quick-strip span {
  color: #8e8e8e;
  font-size: 14px;
}

.platform-section {
  padding: 62px 0 72px;
}

.orange-section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 26px;
  padding-bottom: 13px;
  border-bottom: 3px solid var(--accent);
}

.orange-section-title span,
.info-panel header span {
  color: var(--accent);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.orange-section-title h1,
.info-panel h2 {
  margin: 2px 0 0;
}

.orange-section-title h1 {
  font-size: 29px;
}

.orange-section-title p {
  max-width: 560px;
  margin: 0;
  color: #888888;
  font-size: 14px;
  text-align: right;
}

.platform-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: #343434;
  border: 1px solid #343434;
}

.platform-card {
  min-width: 0;
  padding: 22px;
  background: #171717;
  transition: background 160ms ease, transform 160ms ease;
}

.platform-card:hover {
  z-index: 1;
  background: #202020;
  transform: translateY(-3px);
}

.platform-visual {
  height: 112px;
  display: grid;
  place-items: center;
  color: rgba(255, 176, 54, 0.72);
  background:
    linear-gradient(145deg, rgba(255, 136, 0, 0.18), transparent 52%),
    repeating-linear-gradient(135deg, #252525 0, #252525 9px, #202020 9px, #202020 18px);
  border: 1px solid #3b3b3b;
  font-size: 38px;
  font-weight: 900;
}

.platform-card h2 {
  margin: 18px 0 7px;
  color: #eeeeee;
  font-size: 18px;
}

.platform-card p {
  margin: 0;
  color: #848484;
  font-size: 13px;
}

.billing-strip {
  padding: 27px 0;
  color: #222222;
  background: linear-gradient(100deg, #ff9800, #ffc34a 52%, #f88a00);
}

.billing-strip .shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
}

.billing-kicker {
  padding: 7px 10px;
  color: #fff2c1;
  background: #7f1d00;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.billing-strip h2,
.billing-strip p {
  margin: 0;
}

.billing-strip h2 {
  font-size: 21px;
}

.billing-strip p {
  margin-top: 3px;
  font-size: 13px;
}

.billing-strip a,
.info-action {
  padding: 10px 17px;
  color: #ffffff;
  background: #282828;
  border: 1px solid #464646;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.homepage-info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding-top: 54px;
}

.info-panel {
  min-width: 0;
  background: #151515;
  border: 1px solid #313131;
}

.info-panel header {
  padding: 15px 18px 12px;
  background: #232323;
  border-bottom: 2px solid var(--accent);
}

.info-panel h2 {
  font-size: 18px;
}

.info-panel-body {
  min-height: 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 20px;
}

.info-panel-body p {
  margin: 0;
  color: #939393;
  font-size: 14px;
}

.info-action:hover {
  color: #ffffff;
  background: var(--accent-dark);
  border-color: var(--accent);
}

.info-action.disabled {
  color: #707070;
  cursor: not-allowed;
}

.compact-group-list {
  width: 100%;
  display: grid;
  gap: 12px;
}

.compact-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.compact-group span {
  display: grid;
}

.compact-group small {
  color: #898989;
}

.mini-qr {
  width: 54px;
  height: 54px;
  padding: 3px;
  background: #ffffff;
  object-fit: contain;
}

.public-footer {
  padding: 35px 0;
  color: #7d7d7d;
  background: #181818;
  border-top: 1px solid #323232;
}

.footer-content {
  justify-content: space-between;
  gap: 32px;
}

.footer-content strong {
  color: #d8d8d8;
}

.footer-content p {
  margin: 3px 0 0;
  font-size: 12px;
}

.footer-content nav {
  display: flex;
  gap: 18px;
}

.footer-content a {
  color: #9a9a9a;
  font-size: 13px;
  text-decoration: none;
}

.footer-content a:hover {
  color: var(--accent);
}

/* 用户中心沿用公开站点视觉，但记录表采用固定列和分页以控制渲染开销。 */
.account-main {
  min-height: 60vh;
  padding: 48px 0 72px;
  background: #090909;
}

.account-shell {
  display: grid;
  gap: 24px;
}

.account-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  padding-bottom: 15px;
  border-bottom: 3px solid var(--accent);
}

.account-heading h1,
.account-heading p {
  margin: 0;
}

.account-heading > p {
  color: #858585;
  font-size: 13px;
}

.account-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: #3a3a3a;
  border: 1px solid #3a3a3a;
}

.account-metrics article {
  display: grid;
  gap: 6px;
  padding: 19px 22px;
  background: #1b1b1b;
}

.account-metrics span {
  color: #888888;
  font-size: 12px;
}

.account-metrics strong {
  color: #ffab2e;
  font-size: 24px;
}

.account-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 20px;
}

.account-panel {
  min-width: 0;
  background: #161616;
  border: 1px solid #343434;
}

.account-panel > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 18px;
  background: #252525;
  border-bottom: 2px solid var(--accent);
}

.account-panel h2 {
  margin: 0;
  font-size: 17px;
}

.account-panel header span {
  color: #8d8d8d;
  font-size: 12px;
}

.table-head,
.table-row {
  display: grid;
  grid-template-columns: 130px minmax(120px, 1fr) 68px 68px;
  gap: 10px;
  align-items: center;
  padding: 10px 15px;
}

.table-head {
  color: #9a9a9a;
  background: #101010;
  font-size: 11px;
}

.table-row {
  color: #bcbcbc;
  border-top: 1px solid #2b2b2b;
  font-size: 12px;
}

.table-row .positive { color: #74c972; }
.table-row .negative { color: #ff7b62; }

.charge-list {
  display: grid;
}

.charge-list article {
  display: grid;
  gap: 3px;
  padding: 13px 17px;
  border-bottom: 1px solid #2d2d2d;
}

.charge-list span,
.charge-list small {
  color: #858585;
  font-size: 12px;
}

.empty-row {
  margin: 0;
  padding: 24px 18px;
  color: #777777;
  text-align: center;
}

.account-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  padding: 14px;
  border-top: 1px solid #303030;
  font-size: 12px;
}

.account-pagination a {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 960px) {
  .platform-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .homepage-info-grid,
  .account-grid {
    grid-template-columns: 1fr;
  }

  .billing-strip .shell {
    grid-template-columns: auto 1fr;
  }

  .billing-strip a {
    grid-column: 2;
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .utility-inner > span,
  .header-copy {
    display: none;
  }

  .utility-inner {
    justify-content: flex-end;
  }

  .primary-inner {
    min-height: 70px;
  }

  .brand-logo {
    width: 162px;
    height: 58px;
  }

  .header-navigation {
    overflow-x: auto;
  }

  .header-navigation a {
    min-width: auto;
    flex: 0 0 auto;
    padding-inline: 16px;
  }

  .flash-banner {
    grid-template-columns: 58px 1fr 18px;
    gap: 9px;
    padding-inline: 11px;
  }

  .flash-copy {
    display: grid;
    gap: 0;
  }

  .flash-copy strong {
    font-size: 15px;
  }

  .flash-copy small {
    font-size: 11px;
  }

  .quick-strip .shell,
  .platform-card-grid,
  .billing-strip .shell,
  .account-metrics {
    grid-template-columns: 1fr;
  }

  .orange-section-title,
  .account-heading,
  .footer-content {
    align-items: flex-start;
    flex-direction: column;
  }

  .orange-section-title p {
    text-align: left;
  }

  .billing-strip a {
    grid-column: auto;
  }

  .table-head {
    display: none;
  }

  .table-row {
    grid-template-columns: 1fr auto;
  }

  .table-row time,
  .table-row span:first-of-type {
    grid-column: 1;
  }

  .footer-content {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  .flash-banner::before {
    animation: none;
  }

  .platform-card {
    transform: none !important;
  }
}

/*
 * 公开门户采用实测的紧凑黑橙视觉基线。这里集中覆盖早期页面样式，
 * 让首页、注册、登录和用户中心共享同一组尺寸、字体与圆角规则。
 */
:root {
  --reference-content-width: 1170px;
  --reference-top-height: 30px;
  --reference-primary-height: 60px;
  --reference-subnav-height: 31px;
  --reference-card-radius: 4px;
}

html {
  scroll-padding-top: 160px;
}

body {
  min-width: 0;
  margin: 0;
  padding-top: 160px;
  color: #777777;
  background: #000000;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  text-align: center;
}

.shell {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: 15px;
  padding-left: 15px;
}

.public-header {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  left: 0;
  height: calc(
    var(--reference-top-height)
    + var(--reference-primary-height)
    + var(--reference-subnav-height)
  );
  border: 0;
  background: #323232;
}

.utility-bar {
  min-height: var(--reference-top-height);
  height: var(--reference-top-height);
  color: #777777;
  background: #232323;
  border: 0;
  font-size: 14px;
  line-height: var(--reference-top-height);
}

.utility-inner {
  min-height: var(--reference-top-height);
  height: var(--reference-top-height);
  justify-content: space-between;
  gap: 15px;
}

.language-chip {
  height: 24px;
  display: inline-flex;
  align-items: center;
  padding: 0 5px;
  color: #888b8c;
  background: #232323;
  border: 1px solid #777777;
  border-radius: 0;
  line-height: 22px;
}

.language-chip::after {
  margin-left: 5px;
  color: #888888;
  content: "⌄";
}

.utility-inner nav {
  height: var(--reference-top-height);
  gap: 10px;
}

.utility-inner a,
.utility-button,
.utility-inner .utility-register {
  height: var(--reference-top-height);
  padding: 0;
  color: #888888;
  border: 0;
  border-radius: 0;
  font-family: inherit;
  font-size: 14px;
  font-weight: 400;
  line-height: var(--reference-top-height);
}

.utility-inner a:hover,
.utility-inner a:focus-visible,
.utility-button:hover,
.utility-button:focus-visible {
  color: #ff8800;
}

.primary-header {
  height: var(--reference-primary-height);
  background: #323232;
}

.primary-inner {
  position: relative;
  min-height: var(--reference-primary-height);
  height: var(--reference-primary-height);
  gap: 0;
}

.brand-logo {
  width: 199px;
  height: var(--reference-primary-height);
  flex: 0 0 199px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: visible;
  padding: 7px 0 7px 15px;
}

.brand-logo img {
  width: 184px;
  height: 46px;
  object-fit: contain;
  object-position: left center;
}

.primary-navigation {
  height: var(--reference-primary-height);
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  margin-left: auto;
}

.primary-navigation a {
  height: 51px;
  display: block;
  padding: 20px 15px;
  color: #ababab;
  background: transparent;
  border: 0;
  border-radius: 0;
  font-size: 16px;
  font-weight: 400;
  line-height: 11px;
  text-align: center;
  text-decoration: none;
}

.primary-navigation a:hover,
.primary-navigation a:focus-visible {
  color: #ffffff;
  background: #282828;
}

.mobile-navigation {
  display: none;
}

.secondary-nav {
  height: var(--reference-subnav-height);
  background: #101010;
  border: 0;
  box-shadow: none;
}

.header-subnavigation {
  min-height: var(--reference-subnav-height);
  height: var(--reference-subnav-height);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
  overflow: hidden;
}

.header-subnavigation a {
  height: var(--reference-subnav-height);
  padding: 5px 10px 6px;
  color: #ff8800;
  background: transparent;
  border: 0;
  border-radius: 0;
  font-size: 14px;
  font-weight: 600;
  line-height: 20px;
  text-decoration: none;
  white-space: nowrap;
}

.header-subnavigation a:hover,
.header-subnavigation a:focus-visible {
  color: #ffffff;
}

.public-main {
  min-height: 50vh;
  padding-bottom: 40px;
  background: #000000;
}

.advertisement-section {
  padding: 4px 0 0;
  background: #000000;
  border: 0;
}

.shell.banner-stack {
  width: min(var(--reference-content-width), calc(100% - 30px));
  display: grid;
  gap: 2px;
  padding-right: 0;
  padding-left: 0;
  background: #000000;
}

.flash-banner {
  min-height: 72px;
  grid-template-columns: 108px minmax(0, 1fr) 32px;
  gap: 15px;
  padding: 8px 18px;
  color: #fff3b0;
  background:
    linear-gradient(90deg, #7b0000, #d91d00 48%, #780000),
    #a40000;
  border: 1px solid #ffb000;
  border-radius: 0;
  box-shadow:
    inset 0 0 0 1px rgba(255, 41, 0, 0.72),
    inset 0 0 22px rgba(255, 213, 0, 0.23);
}

.flash-banner-2 {
  background: linear-gradient(90deg, #201000, #9b1600 40%, #ef2a00 72%, #5b0800);
}

.flash-banner-3 {
  background: linear-gradient(90deg, #540000, #d50d00 36%, #6b0000 68%, #bd1900);
}

.flash-banner-4 {
  background: linear-gradient(90deg, #270000, #8d0000 34%, #e22a00 70%, #3a0000);
}

.flash-banner::before {
  background: linear-gradient(
    110deg,
    transparent 20%,
    rgba(255, 238, 128, 0.42) 48%,
    transparent 72%
  );
  animation-duration: 2.8s;
}

.flash-tag {
  color: #fff06a;
  border-right: 1px solid #ffd24d;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0;
  text-shadow: 0 1px 0 #6a0000;
}

.flash-copy {
  gap: 15px;
}

.flash-copy strong {
  color: #ffe66b;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0;
  text-shadow: 1px 2px 0 #7c0000, 0 0 8px rgba(255, 218, 46, 0.6);
}

.flash-copy small {
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
}

.flash-arrow {
  color: #ffe252;
  font-size: 30px;
}

.quick-strip {
  padding: 8px 0 11px;
  background: #101010;
  border: 0;
}

.shell.quick-search-row {
  width: min(600px, calc(100% - 30px));
  display: grid;
  grid-template-columns: minmax(0, 1fr) 155px 100px;
  gap: 0;
  padding: 0;
}

.quick-search-copy,
.quick-search-category,
.quick-search-action {
  height: 38px;
  display: flex;
  align-items: center;
  font-size: 14px;
  line-height: 20px;
}

.quick-search-copy {
  overflow: hidden;
  padding: 8px 12px;
  color: #555555;
  background: #fbfbfb;
  border: 1px solid #aaaaaa;
  border-radius: 4px 0 0 4px;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-search-category {
  justify-content: center;
  color: #555555;
  background: #fbfbfb;
  border-top: 1px solid #aaaaaa;
  border-bottom: 1px solid #aaaaaa;
}

.quick-search-action {
  justify-content: center;
  color: #ffffff;
  background: #ff8800;
  border: 1px solid #ff8800;
  border-radius: 0 4px 4px 0;
  font-size: 25px;
  font-weight: 700;
  text-decoration: none;
}

.quick-search-action:hover,
.quick-search-action:focus-visible {
  color: #ffffff;
  background: #d67200;
}

.quick-description {
  margin-top: 14px;
  margin-bottom: 0;
  color: #777777;
  font-size: 12px;
  text-align: left;
}

.quick-description span {
  color: #ff8800;
  font-weight: 700;
}

.platform-section {
  padding: 10px 0 28px;
  background: #101010;
}

.orange-section-title {
  height: 40px;
  display: block;
  margin: 0 0 14px;
  padding: 10px 12px;
  color: #ffffff;
  background: #ff8800;
  border: 0;
  border-radius: 0;
  text-align: left;
}

.orange-section-title h1 {
  margin: 0;
  color: #ffffff;
  font-size: 18px;
  font-weight: 500;
  line-height: 20px;
}

.section-summary {
  margin: 0 0 14px;
  color: #888888;
  font-size: 13px;
  text-align: left;
}

.platform-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px 30px;
  background: transparent;
  border: 0;
}

.platform-card {
  min-width: 0;
  min-height: 260px;
  padding: 9px;
  color: #777777;
  background: #ffffff;
  border: 0;
  border-radius: var(--reference-card-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
  text-align: left;
  transition: none;
}

.platform-card:hover {
  background: #ffffff;
  transform: none;
}

.platform-visual {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  display: grid;
  place-items: center;
  color: #ffe36d;
  background:
    radial-gradient(circle at 72% 28%, rgba(255, 217, 75, 0.48), transparent 22%),
    linear-gradient(135deg, #250000, #b81400 48%, #ff7a00 100%);
  border: 1px solid #ff8800;
  border-radius: 0;
  font-size: 38px;
  font-weight: 900;
  text-shadow: 1px 2px 0 #6c0000;
}

.platform-card h2 {
  overflow: hidden;
  margin: 8px 0 4px;
  color: #ff8800;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.platform-card p {
  margin: 0;
  color: #777777;
  font-size: 12px;
  line-height: 18px;
}

.billing-strip {
  padding: 18px 0;
  color: #ffffff;
  background: #ff8800;
}

.billing-strip .shell {
  gap: 22px;
}

.billing-kicker {
  color: #ffe79c;
  background: #9a2200;
  border-radius: 0;
}

.billing-strip h2 {
  color: #ffffff;
  font-size: 18px;
  font-weight: 500;
  line-height: 20px;
}

.billing-strip p {
  margin-top: 5px;
  color: #fff0d2;
  font-size: 12px;
}

.billing-strip a,
.info-action,
.button,
.registration-submit {
  min-height: 38px;
  padding: 8px 16px;
  color: #ffffff;
  background: #ff8800;
  border: 1px solid #ff8800;
  border-radius: var(--reference-card-radius);
  box-shadow: none;
  font-family: inherit;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  text-decoration: none;
}

.billing-strip a {
  color: #ffffff;
  background: #323232;
  border-color: #323232;
}

.homepage-info-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
  padding-top: 30px;
}

.info-panel {
  overflow: hidden;
  color: #777777;
  background: #ffffff;
  border: 0;
  border-radius: var(--reference-card-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
  text-align: left;
}

.info-panel header {
  height: 40px;
  padding: 10px 12px;
  color: #ffffff;
  background: #ff8800;
  border: 0;
}

.info-panel header span {
  display: none;
}

.info-panel h2 {
  margin: 0;
  color: #ffffff;
  font-size: 18px;
  font-weight: 500;
  line-height: 20px;
  text-align: center;
}

.info-panel-body {
  min-height: 160px;
  padding: 16px;
}

.info-panel-body p,
.compact-group small {
  color: #777777;
  font-size: 13px;
  line-height: 20px;
}

.compact-group strong {
  color: #333333;
}

.public-footer,
.site-footer {
  padding: 30px 0;
  color: #777777;
  background: #101010;
  border-top: 1px solid #232323;
}

.footer-content strong,
.footer-brand {
  color: #ababab;
}

.footer-content a,
.footer-inner nav a {
  color: #888888;
  font-size: 13px;
}

.registration-main,
.account-main {
  min-height: calc(100vh - 160px);
  padding: 30px 0 50px;
  background: #000000;
}

.shell.register-shell {
  width: min(750px, 100%);
}

.registration-card {
  overflow: hidden;
  padding: 30px;
  color: #777777;
  background: #ffffff;
  border: 0;
  border-radius: var(--reference-card-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
  text-align: left;
}

.registration-heading {
  margin: -30px -30px 24px;
  padding: 15px 20px;
  color: #ffffff;
  background: #ff8800;
  text-align: center;
}

.registration-heading .eyebrow {
  display: none;
}

.registration-heading h1 {
  margin: 0;
  color: #ffffff;
  font-size: 18px;
  font-weight: 500;
  line-height: 20px;
}

.registration-heading > p:last-child {
  margin: 6px 0 0;
  color: #fff2d6;
  font-size: 12px;
  line-height: 18px;
}

.registration-form {
  gap: 15px;
}

.field-group {
  gap: 5px;
}

.field-group label {
  color: #555555;
  font-size: 14px;
  font-weight: 400;
}

.field-group small {
  color: #888888;
  font-size: 12px;
}

.registration-form input {
  min-height: 38px;
  padding: 8px 12px;
  color: #555555;
  background: #fbfbfb;
  border: 1px solid #aaaaaa;
  border-radius: var(--reference-card-radius);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
  font-family: inherit;
  font-size: 14px;
  line-height: 20px;
}

.form-notice {
  border-radius: var(--reference-card-radius);
}

.registration-footnote {
  color: #777777;
}

.account-heading {
  padding: 10px 15px;
  color: #ffffff;
  background: #ff8800;
  border: 0;
}

.account-heading .eyebrow {
  display: none;
}

.account-heading h1,
.account-heading > p {
  color: #ffffff;
}

.account-heading h1 {
  font-size: 18px;
  line-height: 20px;
}

.account-metrics {
  gap: 1px;
  background: #aaaaaa;
  border: 1px solid #aaaaaa;
}

.account-metrics article,
.account-panel {
  color: #777777;
  background: #ffffff;
}

.account-panel {
  overflow: hidden;
  border: 0;
  border-radius: var(--reference-card-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
}

.account-panel > header {
  color: #ffffff;
  background: #ff8800;
  border: 0;
}

.account-panel h2,
.account-panel header span {
  color: #ffffff;
}

.table-head {
  color: #777777;
  background: #f2f2f2;
}

.table-row,
.charge-list article,
.account-pagination {
  color: #777777;
  border-color: #e5e5e5;
}

.tutorial-section {
  padding: 10px 0 28px;
  background: #101010;
}

.tutorial-section > .shell {
  width: min(var(--reference-content-width), calc(100% - 30px));
  padding-right: 0;
  padding-left: 0;
}

.tutorial-video-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px 24px;
}

.tutorial-video-card {
  min-width: 0;
  overflow: hidden;
  display: block;
  padding: 9px;
  color: #777777;
  background: #ffffff;
  border: 0;
  border-radius: var(--reference-card-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
  text-align: left;
  text-decoration: none;
}

.tutorial-video-card:hover,
.tutorial-video-card:focus-visible {
  color: #777777;
  background: #ffffff;
}

.tutorial-video-thumb {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  background: #232323;
  object-fit: cover;
}

.tutorial-video-copy {
  display: grid;
  gap: 4px;
  padding-top: 8px;
}

.tutorial-video-copy strong {
  overflow: hidden;
  display: -webkit-box;
  color: #ff8800;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.tutorial-video-copy small {
  overflow: hidden;
  display: -webkit-box;
  color: #777777;
  font-size: 12px;
  line-height: 18px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.tutorial-empty {
  padding: 36px 20px;
  color: #888888;
  background: #ffffff;
  border-radius: var(--reference-card-radius);
  font-size: 13px;
  text-align: center;
}

.tutorial-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 24px;
}

.tutorial-pagination a,
.tutorial-pagination span {
  min-width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  color: #ababab;
  background: #323232;
  border: 1px solid #444444;
  border-radius: 2px;
  font-size: 12px;
  line-height: 28px;
  text-decoration: none;
}

.tutorial-pagination a:hover,
.tutorial-pagination a:focus-visible,
.tutorial-pagination .is-current {
  color: #ffffff;
  background: #ff8800;
  border-color: #ff8800;
}

.tutorial-pagination .is-disabled,
.tutorial-pagination .is-ellipsis {
  color: #666666;
  cursor: default;
}

.videos-page {
  min-height: calc(100vh - 160px);
}

@media (min-width: 768px) {
  .shell {
    width: 750px;
  }

  .platform-card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 992px) {
  .shell {
    width: 970px;
  }

  .platform-card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .shell {
    width: var(--reference-content-width);
  }
}

@media (max-width: 767px) {
  html {
    scroll-padding-top: 100px;
  }

  body {
    padding-top: 100px;
  }

  .public-header {
    height: calc(var(--reference-top-height) + var(--reference-primary-height));
  }

  .utility-inner > .language-chip {
    display: inline-flex;
  }

  .utility-inner {
    justify-content: space-between;
  }

  .brand-logo {
    width: 160px;
    height: var(--reference-primary-height);
    flex-basis: 160px;
    padding-left: 0;
  }

  .brand-logo img {
    width: 145px;
    height: 36px;
  }

  .primary-navigation,
  .secondary-nav {
    display: none;
  }

  .mobile-navigation {
    position: relative;
    display: block;
    margin-left: auto;
  }

  .mobile-navigation summary {
    width: 44px;
    height: 36px;
    display: grid;
    align-content: center;
    gap: 4px;
    margin-top: 12px;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    border-radius: var(--reference-card-radius);
    cursor: pointer;
    list-style: none;
  }

  .mobile-navigation summary::-webkit-details-marker {
    display: none;
  }

  .mobile-navigation summary span {
    height: 2px;
    display: block;
    background: #ababab;
  }

  .mobile-navigation nav {
    position: fixed;
    top: 90px;
    right: 0;
    left: 0;
    display: grid;
    padding: 6px 15px 10px;
    background: #232323;
    border-top: 1px solid #3a3a3a;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.35);
  }

  .mobile-navigation nav a {
    padding: 9px 12px;
    color: #ababab;
    border-bottom: 1px solid #323232;
    font-size: 14px;
    text-align: left;
    text-decoration: none;
  }

  .advertisement-section {
    padding-top: 2px;
  }

  .flash-banner {
    min-height: 62px;
    grid-template-columns: 72px minmax(0, 1fr) 18px;
    gap: 8px;
    padding: 7px 9px;
  }

  .flash-tag {
    font-size: 12px;
  }

  .flash-copy {
    display: grid;
    gap: 0;
  }

  .flash-copy strong {
    font-size: 16px;
    line-height: 20px;
  }

  .flash-copy small {
    font-size: 11px;
    line-height: 16px;
  }

  .quick-search-row {
    grid-template-columns: minmax(0, 1fr) 92px 52px;
  }

  .quick-search-category {
    font-size: 12px;
  }

  .quick-description {
    padding-right: 15px;
    padding-left: 15px;
  }

  .platform-card-grid,
  .homepage-info-grid,
  .account-metrics,
  .account-grid,
  .billing-strip .shell {
    grid-template-columns: 1fr;
  }

  .tutorial-video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .platform-card {
    min-height: 0;
  }

  .billing-strip a {
    grid-column: auto;
    justify-self: start;
  }

  .homepage-info-grid {
    gap: 20px;
  }

  .registration-main,
  .account-main {
    min-height: calc(100vh - 100px);
    padding-top: 20px;
  }

  .registration-card {
    padding: 20px;
    border-radius: var(--reference-card-radius);
  }

  .registration-heading {
    margin: -20px -20px 20px;
  }

  .verification-row {
    flex-direction: column;
  }

  .verification-row .button {
    width: 100%;
  }

  .footer-content,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }
}