@charset "UTF-8";

:root {
  --ink: #101820;
  --muted: #64707b;
  --paper: #fffdf7;
  --cream: #f5f0e5;
  --yellow: #ffd525;
  --rose: #ef5a72;
  --blue: #1f6cff;
  --green: #1d9b6c;
  --line: #d6d2c8;
  --header-height: 76px;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  min-width: 320px;
  margin: 0;
  padding-top: var(--header-height);
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

.container,
.header-inner,
.hero-inner,
.footer-inner {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid var(--ink);
  background: rgba(255, 253, 247, .98);
  transform: translateZ(0);
  backface-visibility: hidden;
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.brand img,
.footer-brand img {
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 50%;
  object-fit: contain;
  background: #fff;
}

.brand > span,
.footer-brand > span {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.2;
}

.brand strong,
.footer-brand strong {
  font-size: 20px;
}

.brand small,
.footer-brand small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.main-nav {
  margin-left: auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 31px;
}

.main-nav a {
  position: relative;
  display: block;
  padding: 26px 0 23px;
  font-size: 14px;
  font-weight: 800;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 4px;
  content: "";
  background: transparent;
}

.main-nav a:hover::after,
.main-nav a.is-current::after {
  background: var(--rose);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 30px;
}

.header-download {
  display: inline-flex;
  min-width: 154px;
  height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 17px;
  border: 1px solid var(--ink);
  color: #fff;
  background: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.header-download:hover {
  color: var(--ink);
  background: var(--yellow);
}

.menu-toggle,
.mobile-label {
  display: none;
}

[class^="i-"] {
  display: inline-block;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  background-color: currentColor;
  mask-repeat: no-repeat;
  mask-position: center;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  -webkit-mask-size: contain;
}

.i-download { mask-image: url("../icons/download.svg"); -webkit-mask-image: url("../icons/download.svg"); }
.i-menu { mask-image: url("../icons/menu.svg"); -webkit-mask-image: url("../icons/menu.svg"); }
.i-radar { mask-image: url("../icons/radar.svg"); -webkit-mask-image: url("../icons/radar.svg"); }
.i-grid { mask-image: url("../icons/grid.svg"); -webkit-mask-image: url("../icons/grid.svg"); }
.i-bookmark { mask-image: url("../icons/bookmark.svg"); -webkit-mask-image: url("../icons/bookmark.svg"); }
.i-arrow-left { mask-image: url("../icons/arrow-left.svg"); -webkit-mask-image: url("../icons/arrow-left.svg"); }
.i-arrow-right { mask-image: url("../icons/arrow-right.svg"); -webkit-mask-image: url("../icons/arrow-right.svg"); }
.i-swipe { mask-image: url("../icons/swipe.svg"); -webkit-mask-image: url("../icons/swipe.svg"); }
.i-globe { mask-image: url("../icons/globe.svg"); -webkit-mask-image: url("../icons/globe.svg"); }
.i-avatar { mask-image: url("../icons/user.svg"); -webkit-mask-image: url("../icons/user.svg"); }
.i-arrow-up { mask-image: url("../icons/arrow-up.svg"); -webkit-mask-image: url("../icons/arrow-up.svg"); }

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ink);
  background:
    linear-gradient(rgba(31, 108, 255, .065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 108, 255, .065) 1px, transparent 1px),
    linear-gradient(104deg, var(--paper) 0 51%, #eaf2ff 51% 100%);
  background-size: 42px 42px, 42px 42px, auto;
}

.hero::before {
  position: absolute;
  bottom: -180px;
  left: -120px;
  width: 430px;
  height: 430px;
  border: 58px solid rgba(255, 213, 37, .35);
  border-radius: 50%;
  content: "";
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 700px;
  align-items: center;
  grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr);
  gap: 62px;
}

.hero-copy {
  padding: 72px 0;
}

.overline,
.section-heading > span,
.section-heading > div > span,
.download-copy > span {
  color: var(--rose);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
}

.hero-copy h1 {
  margin-top: 13px;
  font-size: clamp(70px, 7vw, 108px);
  line-height: .98;
  letter-spacing: -.06em;
  white-space: nowrap;
}

.hero-copy h2 {
  margin-top: 26px;
  font-size: 31px;
  line-height: 1.32;
}

.hero-intro {
  margin-top: 19px;
  color: var(--muted);
  font-size: 15px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
}

.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  border: 1px solid var(--ink);
  background: #fff;
  font-size: 13px;
  font-weight: 800;
}

.hero-action {
  display: inline-flex;
  align-items: flex-start;
  flex-direction: column;
  margin-top: 28px;
}

.hero-action a {
  display: inline-flex;
  min-width: 235px;
  height: 58px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--ink);
  background: var(--yellow);
  font-weight: 900;
}

.hero-action a:hover {
  color: var(--yellow);
  background: var(--ink);
}

.hero-action > span {
  margin-top: 9px;
  color: var(--muted);
  font-size: 12px;
}

.hero-viewer {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
}

.viewer-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 19px;
  gap: 20px;
}

.viewer-top span {
  color: var(--yellow);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .14em;
}

.viewer-top h2 {
  margin-top: 4px;
  font-size: 25px;
}

.viewer-controls {
  display: flex;
  gap: 8px;
}

.viewer-controls button {
  display: flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid #65717d;
  color: #fff;
  background: transparent;
  cursor: pointer;
}

.viewer-controls button:hover {
  color: var(--ink);
  background: var(--yellow);
}

.viewer-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 0 0 10px;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  scrollbar-color: var(--yellow) #3c4651;
  scrollbar-width: thin;
}

.viewer-track::-webkit-scrollbar {
  height: 7px;
}

.viewer-track::-webkit-scrollbar-track {
  background: #3c4651;
}

.viewer-track::-webkit-scrollbar-thumb {
  background: var(--yellow);
}

.viewer-track figure {
  min-width: 238px;
  overflow: hidden;
  border: 1px solid #66717e;
  background: #fff;
  color: var(--ink);
  scroll-snap-align: start;
}

.viewer-track figure > div {
  display: flex;
  width: 236px;
  height: 390px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #f7f5ef;
}

.viewer-track img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.viewer-track figcaption {
  display: grid;
  min-height: 62px;
  align-items: center;
  padding: 13px 15px;
  grid-template-columns: 30px 1fr;
}

.viewer-track figcaption span {
  color: var(--rose);
  font-size: 12px;
  font-weight: 900;
}

.viewer-track figcaption strong {
  font-size: 15px;
}

.viewer-hint {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
  color: #bec6ce;
  font-size: 12px;
}

.section {
  padding: 104px 0;
}

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

.section-heading h2 {
  margin-top: 6px;
  font-size: clamp(43px, 5vw, 67px);
  line-height: 1.1;
  letter-spacing: -.04em;
}

.section-heading p {
  max-width: 560px;
  margin-top: 11px;
  color: var(--muted);
}

.heading-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.heading-row > p {
  padding-bottom: 8px;
  text-align: right;
}

.pulse-section {
  background: #fff;
}

.pulse-board {
  display: grid;
  border: 1px solid var(--ink);
  grid-template-columns: 1.1fr .9fr;
}

.pulse-main {
  padding: 31px;
  border-right: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
}

.pulse-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
}

.pulse-status span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #a7e9cd;
  font-size: 13px;
  font-weight: 800;
}

.pulse-status i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #5ce6aa;
}

.pulse-status b {
  font-size: 14px;
}

.pulse-wave {
  display: flex;
  height: 74px;
  align-items: center;
  gap: 8px;
  margin: 25px 0;
}

.pulse-wave span {
  width: 100%;
  height: 12px;
  background: var(--yellow);
}

.pulse-wave span:nth-child(2),
.pulse-wave span:nth-child(8) { height: 26px; }
.pulse-wave span:nth-child(3),
.pulse-wave span:nth-child(7) { height: 50px; }
.pulse-wave span:nth-child(4),
.pulse-wave span:nth-child(6) { height: 31px; }
.pulse-wave span:nth-child(5) { height: 72px; background: var(--rose); }

.pulse-feature {
  display: grid;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid #48515a;
  grid-template-columns: 125px 1fr;
  gap: 22px;
}

.pulse-feature img {
  width: 125px;
  height: 160px;
  object-fit: contain;
  background: #fff;
}

.pulse-feature small {
  color: var(--rose);
  font-size: 12px;
  font-weight: 800;
}

.pulse-feature h3 {
  margin-top: 5px;
  font-size: 30px;
}

.pulse-feature p {
  margin-top: 6px;
  color: #c5cbd0;
  font-size: 13px;
}

.progress {
  height: 7px;
  margin-top: 17px;
  background: #45505a;
}

.progress span {
  display: block;
  width: 74%;
  height: 100%;
  background: var(--yellow);
}

.pulse-feed {
  padding: 8px 28px;
}

.pulse-feed article {
  display: grid;
  min-height: 100px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 62px 1fr auto;
  gap: 13px;
}

.pulse-feed article:last-child {
  border-bottom: 0;
}

.pulse-feed time {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.pulse-feed div {
  display: flex;
  flex-direction: column;
}

.pulse-feed p {
  color: var(--muted);
  font-size: 12px;
}

.pulse-feed article > span {
  padding: 5px 7px;
  border: 1px solid var(--ink);
  font-size: 12px;
  font-weight: 900;
}

.channels-section {
  background: var(--cream);
}

.channel-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.channel-tab {
  padding: 11px 17px;
  border: 1px solid var(--ink);
  background: #fff;
  font-weight: 800;
  cursor: pointer;
}

.channel-tab.is-active,
.channel-tab:hover {
  color: #fff;
  background: var(--blue);
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.channel-grid article {
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--ink);
  background: #fff;
}

.channel-grid article.is-hidden {
  display: none;
}

.cover {
  display: flex;
  height: 250px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--ink);
  background: #eaf2ff;
}

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

.channel-copy {
  display: flex;
  min-height: 190px;
  flex-direction: column;
  padding: 20px;
}

.channel-copy span {
  color: var(--rose);
  font-size: 12px;
  font-weight: 900;
}

.channel-copy h3 {
  margin-top: 6px;
  font-size: 23px;
}

.channel-copy p {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.channel-copy b {
  margin-top: auto;
  padding-top: 18px;
  font-size: 12px;
}

.shelf-section {
  background: var(--yellow);
}

.shelf-layout {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 70px;
}

.shelf-layout .section-heading {
  margin-bottom: 0;
}

.shelf-console {
  border: 2px solid var(--ink);
  background: #fff;
}

.shelf-tabs {
  display: grid;
  border-bottom: 2px solid var(--ink);
  grid-template-columns: repeat(3, 1fr);
}

.shelf-tab {
  min-height: 72px;
  padding: 11px;
  border: 0;
  border-right: 1px solid var(--ink);
  background: #fff;
  font-weight: 900;
  cursor: pointer;
}

.shelf-tab:last-child {
  border-right: 0;
}

.shelf-tab span {
  display: block;
  color: var(--rose);
  font-size: 12px;
}

.shelf-tab.is-active {
  color: #fff;
  background: var(--ink);
}

.shelf-panel {
  display: grid;
  padding: 25px;
  grid-template-columns: 200px 1fr;
  gap: 25px;
}

.shelf-summary {
  display: flex;
  justify-content: center;
  flex-direction: column;
  padding: 20px;
  background: #eaf2ff;
}

.shelf-summary span,
.shelf-summary small {
  color: var(--muted);
  font-size: 12px;
}

.shelf-summary strong {
  margin: 8px 0;
  font-size: 23px;
}

.shelf-panel li {
  display: grid;
  min-height: 72px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 35px 1fr auto;
  gap: 10px;
}

.shelf-panel li > span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.shelf-panel li div {
  display: flex;
  flex-direction: column;
}

.shelf-panel li small {
  color: var(--muted);
  font-size: 12px;
}

.shelf-panel li button {
  padding: 6px 10px;
  border: 1px solid var(--ink);
  background: #fff;
  font-size: 12px;
  cursor: pointer;
}

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

.faq-list {
  border-top: 1px solid var(--ink);
}

.faq-list details {
  border-bottom: 1px solid var(--ink);
}

.faq-list summary,
.official-site summary {
  display: grid;
  min-height: 78px;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  grid-template-columns: 45px 1fr 24px;
  list-style: none;
}

.faq-list summary::-webkit-details-marker,
.official-site summary::-webkit-details-marker {
  display: none;
}

.faq-list summary > span {
  color: var(--rose);
  font-size: 12px;
  font-weight: 900;
}

.faq-list summary i,
.official-site summary b {
  position: relative;
  width: 18px;
  height: 18px;
}

.faq-list summary i::before,
.faq-list summary i::after,
.official-site summary b::before,
.official-site summary b::after {
  position: absolute;
  top: 8px;
  left: 2px;
  width: 14px;
  height: 1px;
  content: "";
  background: currentColor;
}

.faq-list summary i::after,
.official-site summary b::after {
  transform: rotate(90deg);
}

.faq-list details[open] summary i::after,
.official-site[open] summary b::after {
  transform: rotate(0);
}

.faq-list details p {
  padding: 0 22px 23px 67px;
  color: var(--muted);
  font-size: 14px;
}

.official-site {
  margin-top: 20px;
  border: 1px solid var(--ink);
  background: #fff;
}

.official-site summary {
  grid-template-columns: 1fr 24px;
}

.official-site summary > span {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
}

.official-site p {
  padding: 0 55px 20px;
}

.official-site a {
  color: var(--blue);
}

.voice-section {
  background: #eaf2ff;
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
}

.voice-grid article {
  display: flex;
  min-height: 285px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--ink);
  background: #fff;
}

.voice-grid article:nth-child(3n + 1) {
  border-top: 5px solid var(--yellow);
}

.voice-grid article:nth-child(3n + 2) {
  border-top: 5px solid var(--rose);
}

.voice-grid article:nth-child(3n) {
  border-top: 5px solid var(--blue);
}

.voice-user {
  display: grid;
  align-items: center;
  grid-template-columns: 42px 1fr auto;
  gap: 10px;
}

.voice-user .i-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #fff;
  background-color: var(--ink);
  mask-size: 20px;
  -webkit-mask-size: 20px;
}

.voice-user span {
  color: var(--rose);
  font-size: 12px;
  letter-spacing: .05em;
}

.voice-grid article > p {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.9;
}

.voice-grid time {
  align-self: flex-end;
  margin-top: auto;
  padding-top: 18px;
  color: var(--muted);
  font-size: 12px;
}

.download-section {
  padding: 72px 0;
  background: var(--ink);
}

.download-shell {
  display: grid;
  min-height: 180px;
  border: 1px solid #59636d;
  background: #fff;
  grid-template-columns: 190px 1fr 270px;
}

.download-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-right: 1px solid var(--ink);
  background: var(--yellow);
}

.download-mark span {
  font-size: 62px;
  font-weight: 900;
  line-height: 1;
}

.download-mark small {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .13em;
}

.download-copy {
  display: flex;
  justify-content: center;
  flex-direction: column;
  padding: 30px 42px;
}

.download-copy h2 {
  margin-top: 4px;
  font-size: 30px;
}

.download-copy p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.download-shell > a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-left: 1px solid var(--ink);
  color: #fff;
  background: var(--blue);
  font-size: 18px;
  font-weight: 900;
}

.download-shell > a:hover {
  color: var(--ink);
  background: var(--yellow);
}

.site-footer {
  padding: 48px 0 32px;
  color: #fff;
  background: #080d12;
}

.footer-inner {
  display: grid;
  align-items: center;
  grid-template-columns: auto 1fr;
  gap: 30px;
}

.footer-brand img {
  border-color: #56616a;
}

.footer-brand small {
  color: #aab2ba;
}

.site-footer nav {
  justify-self: end;
}

.site-footer nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 25px;
}

.site-footer nav a {
  font-size: 13px;
}

.footer-inner > p {
  width: 100%;
  padding-top: 23px;
  border-top: 1px solid #49535d;
  color: #abb4bd;
  font-size: 12px;
  text-align: center;
  grid-column: 1 / -1;
}

.back-top {
  position: fixed;
  z-index: 900;
  right: 22px;
  bottom: 22px;
  display: flex;
  width: 50px;
  height: 50px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  background: var(--yellow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
}

.back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 1080px) {
  .main-nav ul {
    gap: 19px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, .85fr) minmax(480px, 1.15fr);
    gap: 28px;
  }

  .hero-copy h1 {
    font-size: 78px;
  }

  .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 66px;
  }

  body {
    font-size: 15px;
  }

  .container,
  .header-inner,
  .hero-inner,
  .footer-inner {
    width: min(calc(100% - 28px), var(--container));
  }

  .brand {
    min-width: 0;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand strong {
    font-size: 16px;
  }

  .brand small {
    max-width: 125px;
    overflow: visible;
    font-size: 12px;
    white-space: nowrap;
  }

  .header-actions {
    margin-left: auto;
  }

  .desktop-label {
    display: none;
  }

  .mobile-label,
  .menu-toggle {
    display: inline-flex;
  }

  .header-download {
    min-width: 90px;
    height: 42px;
    padding: 0 11px;
  }

  .header-download .i-download {
    display: none;
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ink);
    background: #fff;
    cursor: pointer;
  }

  .main-nav {
    position: fixed;
    z-index: 999;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: none;
    margin: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--ink);
    background: var(--paper);
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    display: grid;
    width: min(calc(100% - 28px), var(--container));
    margin: 0 auto;
    padding: 8px 0;
    gap: 0;
  }

  .main-nav a {
    padding: 12px 3px;
    border-bottom: 1px solid var(--line);
  }

  .main-nav a::after {
    display: none;
  }

  .hero {
    background:
      linear-gradient(rgba(31, 108, 255, .06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(31, 108, 255, .06) 1px, transparent 1px),
      linear-gradient(180deg, var(--paper) 0 45%, #eaf2ff 45% 100%);
    background-size: 36px 36px, 36px 36px, auto;
  }

  .hero::before {
    display: none;
  }

  .hero-inner {
    min-height: 0;
    padding: 62px 0 66px;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .hero-copy {
    padding: 0;
    text-align: center;
  }

  .hero-copy h1 {
    font-size: clamp(55px, 18vw, 84px);
    white-space: normal;
  }

  .hero-copy h2 {
    margin-top: 18px;
    font-size: 27px;
  }

  .hero-intro {
    max-width: 650px;
    margin-inline: auto;
  }

  .hero-tags {
    justify-content: center;
  }

  .hero-action {
    align-items: center;
  }

  .hero-viewer {
    width: 100%;
    padding: 18px;
  }

  .viewer-track figure {
    min-width: 225px;
  }

  .viewer-track figure > div {
    width: 223px;
    height: 396px;
  }

  .section {
    padding: 74px 0;
  }

  .heading-row {
    display: block;
  }

  .heading-row > p {
    margin-top: 11px;
    text-align: left;
  }

  .section-heading {
    margin-bottom: 29px;
  }

  .section-heading h2 {
    font-size: 44px;
  }

  .pulse-board {
    grid-template-columns: 1fr;
  }

  .pulse-main {
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .shelf-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .voice-grid article {
    min-height: 0;
  }

  .download-shell {
    grid-template-columns: 1fr;
  }

  .download-mark {
    min-height: 92px;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .download-mark span {
    font-size: 42px;
  }

  .download-copy {
    padding: 28px 22px;
    text-align: center;
  }

  .download-copy h2 {
    font-size: 26px;
  }

  .download-shell > a {
    min-height: 74px;
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .footer-inner {
    display: flex;
    align-items: center;
    flex-direction: column;
    text-align: center;
  }

  .site-footer nav {
    justify-self: auto;
  }

  .site-footer nav ul {
    justify-content: center;
    gap: 12px 20px;
  }

  .footer-inner > p {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .container,
  .header-inner,
  .hero-inner,
  .footer-inner {
    width: min(calc(100% - 24px), var(--container));
  }

  .brand {
    gap: 8px;
  }

  .brand small {
    max-width: 93px;
  }

  .header-actions {
    gap: 7px;
  }

  .header-download {
    min-width: 82px;
    padding: 0 9px;
    font-size: 12px;
  }

  .hero-copy h2 {
    font-size: 23px;
  }

  .hero-tags span {
    padding: 8px 9px;
    font-size: 12px;
  }

  .viewer-top {
    align-items: flex-start;
  }

  .viewer-top h2 {
    font-size: 20px;
  }

  .viewer-controls button {
    width: 38px;
    height: 38px;
  }

  .viewer-track figure {
    min-width: 205px;
  }

  .viewer-track figure > div {
    width: 203px;
    height: 360px;
  }

  .pulse-main,
  .pulse-feed {
    padding: 18px;
  }

  .pulse-status {
    align-items: flex-start;
    flex-direction: column;
  }

  .pulse-feature {
    grid-template-columns: 90px 1fr;
    gap: 13px;
  }

  .pulse-feature img {
    width: 90px;
    height: 126px;
  }

  .pulse-feature h3 {
    font-size: 22px;
  }

  .pulse-feed article {
    grid-template-columns: 50px 1fr auto;
  }

  .channel-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 7px;
  }

  .channel-tab {
    min-width: 112px;
    flex: 0 0 auto;
  }

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

  .cover {
    height: 290px;
  }

  .channel-copy {
    min-height: 170px;
  }

  .shelf-tabs {
    grid-template-columns: 1fr;
  }

  .shelf-tab {
    min-height: 55px;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .shelf-panel {
    grid-template-columns: 1fr;
  }

  .faq-list summary {
    padding-inline: 10px;
    grid-template-columns: 34px 1fr 22px;
  }

  .faq-list details p {
    padding: 0 10px 19px 44px;
  }

  .voice-user {
    grid-template-columns: 42px 1fr;
  }

  .voice-user span {
    grid-column: 2;
  }

  .back-top {
    right: 14px;
    bottom: 14px;
  }
}