@charset "UTF-8";

/* 作者：搭客佬
   链接：https://www.18mhmax.cn/ */

:root {
  --ink: #17191f;
  --charcoal: #202226;
  --orange: #ff6337;
  --orange-dark: #d9431f;
  --orange-soft: #fff0e9;
  --cyan: #288dcc;
  --cyan-soft: #e8f6ff;
  --paper: #fffaf3;
  --white: #ffffff;
  --muted: #667080;
  --line: #d9dfe5;
  --content: 1200px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

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

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

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

button,
input {
  border: 0;
  border-radius: 0;
  font: inherit;
}

button,
summary {
  cursor: pointer;
}

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

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

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

body {
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.75;
  overflow-x: hidden;
}

.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;
}

.header-inner,
.hero-inner,
.section-inner,
.footer-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  background: rgba(32, 34, 38, 0.98);
  border-bottom: 1px solid #34363b;
  transform: translateZ(0);
  backface-visibility: hidden;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 12px;
}

.brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.25;
}

.brand-copy strong {
  color: var(--white);
  font-size: 20px;
  font-weight: 900;
  white-space: nowrap;
}

.brand-copy span {
  color: #abb1ba;
  font-size: 12px;
  white-space: nowrap;
}

.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 34px;
}

.main-nav a {
  position: relative;
  display: block;
  padding: 26px 0 24px;
  color: #e8eaed;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--orange);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 160ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.is-active {
  color: var(--white);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after,
.main-nav a.is-active::after {
  transform: scaleX(1);
}

.mobile-actions {
  display: none;
  align-items: center;
  gap: 8px;
}

.mobile-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  color: var(--white);
  background: var(--orange);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.menu-toggle {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: transparent;
  border: 1px solid #70747b;
}

.hero {
  background-color: var(--paper);
  background-image: linear-gradient(rgba(40, 141, 204, 0.07) 1px, transparent 1px), linear-gradient(90deg, rgba(40, 141, 204, 0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 500px;
  gap: 64px;
  align-items: center;
  min-height: 710px;
  padding: 72px 0;
}

.hero-copy {
  min-width: 0;
}

.eyebrow,
.section-heading p,
.console-kicker,
.download-copy > p {
  color: var(--orange-dark);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.2em;
}

.hero h1 {
  margin-top: 16px;
  color: var(--ink);
  font-size: clamp(76px, 7.4vw, 112px);
  font-weight: 900;
  letter-spacing: -0.07em;
  line-height: 0.95;
  white-space: nowrap;
}

.hero h1::first-letter {
  color: var(--orange);
}

.hero-slogan {
  margin-top: 30px;
  color: var(--ink);
  font-size: 32px;
  font-weight: 900;
  line-height: 1.3;
}

.hero-description {
  max-width: 600px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 16px;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-features li {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  padding: 0 15px;
  background: var(--white);
  border: 1px solid var(--line);
  font-weight: 800;
}

.hero-features i {
  width: 18px;
  height: 18px;
}

.hero-download {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-top: 32px;
}

.primary-download {
  display: inline-flex;
  min-width: 220px;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--white);
  background: var(--orange);
  border: 2px solid var(--orange);
  font-size: 16px;
  font-weight: 900;
  transition: color 150ms ease, background-color 150ms ease;
}

.primary-download:hover,
.primary-download:focus-visible {
  color: var(--orange-dark);
  background: var(--white);
}

.primary-download:hover .icon-download,
.primary-download:focus-visible .icon-download {
  background-image: url("../icons/download-orange.svg");
}

.age-label {
  color: var(--muted);
  font-size: 13px;
}

.reader-console {
  width: 100%;
  padding: 26px;
  background: var(--white);
  border: 1px solid #cfd4da;
  border-top: 6px solid var(--orange);
  box-shadow: 14px 14px 0 var(--cyan-soft);
}

.console-head,
.progress-copy,
.console-actions,
.review-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.console-head h2 {
  color: var(--ink);
  font-size: 25px;
  line-height: 1.3;
}

.sync-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #16834c;
  font-size: 12px;
  font-weight: 800;
}

.sync-state i {
  width: 8px;
  height: 8px;
  background: #23b869;
  border-radius: 50%;
}

.console-search {
  margin-top: 22px;
}

.console-search > label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 800;
}

.search-control,
.studio-search {
  display: flex;
  align-items: center;
  background: #f3f6f8;
  border: 1px solid var(--line);
}

.search-control {
  min-height: 48px;
  padding-left: 13px;
}

.search-control i,
.studio-search i {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.search-control input,
.studio-search input {
  min-width: 0;
  flex: 1 1 auto;
  padding: 0 12px;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
}

.search-control button,
.studio-search button {
  align-self: stretch;
  padding: 0 18px;
  color: var(--white);
  background: var(--orange);
  font-size: 13px;
  font-weight: 800;
}

.console-categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
  margin-top: 13px;
}

.console-categories button,
.filter-row button {
  min-height: 36px;
  color: var(--ink);
  background: #f4f5f6;
  border: 1px solid var(--line);
  font-size: 12px;
  font-weight: 700;
}

.console-categories button.is-active,
.filter-row button.is-active {
  color: var(--white);
  background: var(--orange);
  border-color: var(--orange);
}

.console-tabs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 18px;
  border-bottom: 1px solid var(--line);
}

.console-tabs button {
  position: relative;
  padding: 10px;
  color: var(--muted);
  background: transparent;
  font-size: 13px;
  font-weight: 800;
}

.console-tabs button::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--orange);
  content: "";
  transform: scaleX(0);
}

.console-tabs button.is-active {
  color: var(--orange-dark);
}

.console-tabs button.is-active::after {
  transform: scaleX(1);
}

.reading-list {
  margin-top: 8px;
}

.reading-item {
  display: grid;
  grid-template-columns: 18px 42px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 60px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.reading-item input {
  accent-color: var(--orange);
}

.cover-box {
  display: flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--orange-soft);
}

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

.reading-meta {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.45;
}

.reading-meta strong {
  overflow: hidden;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reading-meta span,
.item-state {
  color: var(--muted);
  font-size: 12px;
}

.item-state {
  color: var(--orange-dark);
  font-weight: 900;
}

.console-progress {
  margin-top: 15px;
}

.progress-copy span,
.progress-copy strong {
  font-size: 12px;
}

.progress-track {
  display: block;
  height: 6px;
  margin-top: 7px;
  overflow: hidden;
  background: #e4e7ea;
}

.progress-track i {
  display: block;
  height: 100%;
  background: var(--orange);
  transition: width 180ms ease;
}

.console-actions {
  gap: 10px;
  margin-top: 18px;
}

.console-actions button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 900;
}

.favorite-control {
  flex: 1 1 42%;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
}

.favorite-control[aria-pressed="true"] {
  color: var(--orange-dark);
  background: var(--orange-soft);
  border-color: var(--orange);
}

.explore-control {
  flex: 1 1 58%;
  color: var(--white);
  background: var(--charcoal);
}

.console-actions i {
  width: 17px;
  height: 17px;
}

.section {
  border-bottom: 1px solid var(--line);
}

.section-inner {
  padding: 100px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}

.section-heading h2 {
  margin-top: 7px;
  color: var(--ink);
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.section-heading > span {
  max-width: 520px;
  padding-bottom: 7px;
  color: var(--muted);
  font-size: 14px;
  text-align: right;
}

.guide {
  background: #f6fbfe;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, 0.65fr);
  gap: 16px;
}

.filter-studio,
.update-board,
.shelf-board {
  background: var(--white);
  border: 1px solid var(--line);
}

.filter-studio {
  min-height: 474px;
  padding: 34px;
}

.module-title {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.module-title > span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: var(--charcoal);
  font-size: 12px;
  font-weight: 900;
}

.module-title h3 {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.35;
}

.module-title p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.studio-search {
  min-height: 54px;
  margin-top: 40px;
  padding-left: 16px;
}

.studio-search button {
  min-width: 92px;
}

.filter-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.filter-row strong {
  font-size: 13px;
}

.filter-row > div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-row button {
  min-width: 70px;
  padding: 0 12px;
}

.filter-feedback {
  margin-top: 20px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
}

.guide-side {
  display: grid;
  gap: 16px;
}

.update-board,
.shelf-board {
  padding: 28px;
}

.update-board ul {
  margin-top: 23px;
}

.update-board li {
  display: grid;
  grid-template-columns: 9px 1fr auto;
  gap: 11px;
  align-items: center;
  padding: 7px 0;
  color: var(--muted);
  font-size: 13px;
}

.update-board li i {
  width: 8px;
  height: 8px;
  background: var(--orange);
  border-radius: 50%;
}

.update-board li strong {
  color: var(--ink);
}

.shelf-board {
  background: var(--charcoal);
}

.shelf-board .module-title h3,
.shelf-board .module-title p {
  color: var(--white);
}

.shelf-board .module-title > span {
  color: var(--ink);
  background: var(--orange);
}

.shelf-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 13px;
  align-items: center;
  padding: 12px 0;
  color: #d9dde2;
  border-bottom: 1px solid #42454b;
  font-size: 13px;
}

.shelf-row strong {
  color: var(--orange);
}

.shelf-row button {
  padding: 5px 9px;
  color: var(--white);
  background: transparent;
  border: 1px solid #60646c;
  font-size: 12px;
}

.screens {
  background: var(--paper);
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.screen-grid figure {
  min-width: 0;
  background: var(--white);
  border: 1px solid #cfd4da;
}

.screen-viewport {
  display: flex;
  width: 100%;
  aspect-ratio: 9 / 16;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #f0f2f4;
}

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

.screen-grid figcaption {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 1px 12px;
  min-height: 82px;
  align-content: center;
  padding: 14px 16px;
  border-top: 1px solid #cfd4da;
}

.screen-grid figcaption > span {
  grid-row: 1 / 3;
  align-self: center;
  color: var(--orange-dark);
  font-size: 13px;
  font-weight: 900;
}

.screen-grid figcaption strong {
  font-size: 16px;
}

.screen-grid figcaption small {
  color: var(--muted);
  font-size: 12px;
}

.faq {
  background: #ffffff;
}

.faq-list {
  width: 100%;
  border-top: 1px solid var(--ink);
}

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

.faq-item h3 {
  font-size: 15px;
}

.faq-item h3 > button {
  display: flex;
  width: 100%;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 24px;
  color: var(--ink);
  background: transparent;
  text-align: left;
}

.faq-item h3 span {
  display: flex;
  align-items: center;
  gap: 24px;
}

.faq-item h3 b {
  color: var(--orange-dark);
  font-size: 12px;
}

.faq-item h3 i,
.summary-state {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.faq-item h3 i::before,
.faq-item h3 i::after,
.summary-state::before,
.summary-state::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 1px;
  background: var(--ink);
  content: "";
  transform: translate(-50%, -50%);
}

.faq-item h3 i::after,
.summary-state::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item h3 button[aria-expanded="true"] i::after,
.official-site[open] .summary-state::after {
  transform: translate(-50%, -50%) rotate(0);
}

.faq-answer {
  padding: 0 76px 22px;
  color: var(--muted);
  font-size: 14px;
}

.official-site {
  margin-top: 28px;
  border: 1px solid var(--ink);
}

.official-site summary {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 24px;
  list-style: none;
}

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

.official-site summary > span {
  display: flex;
  align-items: center;
  gap: 13px;
}

.official-site summary .icon-globe {
  width: 20px;
  height: 20px;
}

.official-site summary strong {
  font-size: 15px;
}

.official-site > div {
  padding: 0 57px 22px;
}

.official-site > div a {
  color: var(--cyan);
  font-size: 14px;
  text-decoration: underline;
}

.reviews {
  background: #fff5ef;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.review-card {
  position: relative;
  display: flex;
  min-height: 250px;
  flex-direction: column;
  padding: 27px;
  background: var(--white);
  border: 1px solid #ead6cc;
  border-top: 4px solid var(--orange);
}

.review-user {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
}

.review-user i {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  background-color: var(--charcoal);
  background-size: 21px;
  border-radius: 50%;
}

.review-user strong {
  overflow: hidden;
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.comment-rating {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  justify-content: flex-end;
  color: var(--orange);
  font-size: 12px;
  white-space: nowrap;
}

.comment-rating i {
  color: var(--orange);
  font-size: 13px;
  font-style: normal;
}

.comment-rating i::before {
  content: "★";
}

.review-card > p {
  margin-top: 24px;
  color: #3f454e;
  font-size: 14px;
  line-height: 1.9;
}

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

.download {
  background: var(--charcoal);
}

.download .section-inner {
  padding: 72px 0;
}

.download-pass {
  position: relative;
  display: grid;
  grid-template-columns: 178px minmax(0, 1fr) 230px;
  min-height: 154px;
  background: var(--white);
  border: 2px solid var(--orange);
}

.download-pass::before,
.download-pass::after {
  position: absolute;
  top: 50%;
  width: 24px;
  height: 48px;
  background: var(--charcoal);
  content: "";
  transform: translateY(-50%);
}

.download-pass::before {
  left: -2px;
  border-radius: 0 24px 24px 0;
}

.download-pass::after {
  right: -2px;
  border-radius: 24px 0 0 24px;
}

.pass-stub {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px 34px;
  color: var(--orange-dark);
  border-right: 1px dashed var(--orange);
}

.pass-stub span,
.pass-stub strong {
  font-size: 18px;
  font-weight: 900;
  line-height: 1.15;
}

.pass-stub i {
  width: 74px;
  height: 23px;
  margin-top: 18px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 5px);
}

.download-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 28px 42px;
}

.download-copy h2 {
  margin-top: 6px;
  color: var(--ink);
  font-size: 27px;
  line-height: 1.3;
}

.download-copy > span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.download-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--white);
  background: var(--orange);
  font-size: 17px;
  font-weight: 900;
}

.download-action i {
  width: 19px;
  height: 19px;
}

.download-action:hover,
.download-action:focus-visible {
  color: var(--ink);
  background: var(--cyan-soft);
}

.download-action:hover .icon-arrow,
.download-action:focus-visible .icon-arrow {
  background-image: url("../icons/arrow-dark.svg");
}

.site-footer {
  color: #d8dbe0;
  background: #17191c;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: center;
  min-height: 160px;
}

.footer-brand img {
  width: 42px;
  height: 42px;
}

.footer-brand .brand-copy strong {
  font-size: 17px;
}

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

.footer-nav a {
  color: #d8dbe0;
  font-size: 12px;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--orange);
}

.footer-inner > p {
  justify-self: end;
  color: #999fa8;
  font-size: 12px;
}

.back-top {
  position: fixed;
  z-index: 90;
  right: 24px;
  bottom: 24px;
  display: flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  opacity: 0;
  color: var(--white);
  background: var(--orange);
  border: 1px solid #ffffff;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 150ms ease, transform 150ms ease;
}

.back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-top i {
  width: 19px;
  height: 19px;
}

[class^="icon-"],
[class*=" icon-"] {
  display: inline-block;
  flex: 0 0 auto;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

.icon-menu { width: 22px; height: 22px; background-image: url("../icons/menu.svg"); }
.icon-compass { background-image: url("../icons/compass.svg"); }
.icon-bookmark { background-image: url("../icons/bookmark.svg"); }
.icon-clock { background-image: url("../icons/clock.svg"); }
.icon-download { width: 19px; height: 19px; background-image: url("../icons/download.svg"); }
.icon-search { background-image: url("../icons/search.svg"); }
.icon-heart { background-image: url("../icons/heart.svg"); }
.icon-arrow { background-image: url("../icons/arrow.svg"); }
.icon-globe { background-image: url("../icons/globe.svg"); }
.icon-avatar { background-image: url("../icons/avatar.svg"); }
.icon-top { background-image: url("../images/top.svg"); }

@media (max-width: 1100px) {
  .main-nav > ul {
    gap: 22px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) 450px;
    gap: 36px;
  }

  .hero h1 {
    font-size: 82px;
  }

  .hero-slogan {
    font-size: 28px;
  }

  .guide-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(330px, 0.8fr);
  }

  .download-copy {
    padding-right: 24px;
    padding-left: 28px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 68px;
  }

  body {
    padding-top: var(--header-height);
  }

  .site-header {
    position: fixed;
    right: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    transform: none;
    backface-visibility: visible;
    isolation: isolate;
  }

  .header-inner {
    position: relative;
  }

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

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

  .mobile-actions {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    background: var(--charcoal);
    border-top: 1px solid #3d4046;
  }

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

  .main-nav > ul {
    display: block;
  }

  .main-nav li + li {
    border-top: 1px solid #35383e;
  }

  .main-nav a {
    padding: 13px 20px;
    font-size: 13px;
  }

  .main-nav a::after {
    right: auto;
    width: 4px;
    height: auto;
    top: 0;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 44px;
    min-height: 0;
    padding: 72px 0;
  }

  .hero-copy {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
  }

  .hero h1 {
    font-size: clamp(64px, 16vw, 92px);
  }

  .hero-description {
    margin-right: auto;
    margin-left: auto;
  }

  .hero-features,
  .hero-download {
    justify-content: center;
    align-items: center;
  }

  .reader-console {
    max-width: 560px;
    margin: 0 auto;
    box-shadow: 10px 10px 0 var(--cyan-soft);
  }

  .section-inner {
    padding: 80px 0;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 36px;
  }

  .section-heading > span {
    max-width: 680px;
    padding: 0;
    text-align: left;
  }

  .guide-layout {
    grid-template-columns: 1fr;
  }

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

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

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

  .download-pass {
    grid-template-columns: 150px minmax(0, 1fr) 180px;
  }

  .pass-stub {
    padding: 24px;
  }

  .download-copy h2 {
    font-size: 22px;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    padding: 35px 0;
  }

  .footer-inner > p {
    grid-column: 1 / -1;
    justify-self: center;
  }
}

@media (max-width: 620px) {
  .header-inner,
  .hero-inner,
  .section-inner,
  .footer-inner {
    width: min(calc(100% - 28px), var(--content));
  }

  .brand {
    gap: 7px;
  }

  .brand img {
    width: 36px;
    height: 36px;
    border-radius: 9px;
  }

  .brand-copy strong {
    font-size: 14px;
  }

  .brand-copy span {
    font-size: 12px;
  }

  .mobile-download {
    min-height: 38px;
    padding: 0 11px;
  }

  .menu-toggle {
    width: 38px;
    height: 38px;
  }

  .hero-inner {
    padding: 58px 0 66px;
  }

  .hero h1 {
    margin-top: 10px;
    font-size: clamp(52px, 17vw, 72px);
    white-space: normal;
  }

  .hero-slogan {
    margin-top: 22px;
    font-size: 25px;
  }

  .hero-description {
    font-size: 14px;
  }

  .hero-features {
    gap: 6px;
    margin-top: 22px;
  }

  .hero-features li {
    min-height: 38px;
    padding: 0 10px;
    font-size: 12px;
  }

  .hero-download {
    margin-top: 25px;
  }

  .primary-download {
    min-width: 204px;
    min-height: 52px;
    font-size: 15px;
  }

  .reader-console {
    padding: 18px 14px;
    box-shadow: 7px 7px 0 var(--cyan-soft);
  }

  .console-head {
    align-items: flex-start;
  }

  .console-head h2 {
    font-size: 21px;
  }

  .sync-state {
    margin-top: 3px;
  }

  .console-categories {
    grid-template-columns: repeat(2, 1fr);
  }

  .reading-item {
    grid-template-columns: 18px 38px minmax(0, 1fr) auto;
    gap: 8px;
  }

  .cover-box {
    width: 38px;
    height: 38px;
  }

  .console-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .section-inner {
    padding: 68px 0;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .section-heading h2 {
    font-size: 38px;
  }

  .section-heading > span {
    font-size: 13px;
  }

  .filter-studio,
  .update-board,
  .shelf-board {
    padding: 22px 18px;
  }

  .filter-studio {
    min-height: 0;
  }

  .module-title h3 {
    font-size: 19px;
  }

  .studio-search {
    margin-top: 28px;
  }

  .studio-search button {
    min-width: 66px;
    padding: 0 11px;
  }

  .filter-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .filter-row button {
    min-width: 62px;
  }

  .guide-side {
    grid-template-columns: 1fr;
  }

  .screen-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .screen-grid figcaption {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    gap: 1px;
    min-height: 86px;
    padding: 10px;
  }

  .screen-grid figcaption > span {
    grid-row: auto;
    font-size: 12px;
  }

  .screen-grid figcaption strong {
    font-size: 14px;
  }

  .faq-item h3 > button {
    min-height: 68px;
    padding: 0 14px;
    font-size: 13px;
  }

  .faq-item h3 span {
    gap: 12px;
  }

  .faq-answer {
    padding: 0 46px 20px;
    font-size: 13px;
  }

  .official-site summary {
    min-height: 64px;
    padding: 0 14px;
  }

  .official-site summary strong {
    font-size: 13px;
  }

  .official-site > div {
    padding: 0 47px 18px;
  }

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

  .review-card {
    min-height: 230px;
    padding: 22px 20px;
  }

  .review-head {
    gap: 12px;
  }

  .download .section-inner {
    padding: 56px 0;
  }

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

  .download-pass::before,
  .download-pass::after {
    top: auto;
    bottom: 76px;
  }

  .pass-stub {
    display: grid;
    grid-template-columns: auto auto 1fr;
    gap: 6px;
    align-items: center;
    padding: 19px 30px;
    border-right: 0;
    border-bottom: 1px dashed var(--orange);
  }

  .pass-stub span,
  .pass-stub strong {
    font-size: 14px;
  }

  .pass-stub i {
    justify-self: end;
    margin: 0;
  }

  .download-copy {
    padding: 26px 30px;
    text-align: center;
  }

  .download-copy h2 {
    font-size: 21px;
  }

  .download-action {
    min-height: 76px;
  }

  .footer-inner {
    display: flex;
    min-height: 0;
    align-items: center;
    flex-direction: column;
    padding: 44px 0;
    text-align: center;
  }

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

  .footer-inner > p {
    align-self: center;
  }

  .back-top {
    right: 14px;
    bottom: 14px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 370px) {
  .header-inner {
    width: calc(100% - 20px);
  }

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

  .brand-copy strong {
    font-size: 13px;
  }

  .mobile-download {
    padding: 0 9px;
  }

  .menu-toggle {
    width: 36px;
    height: 36px;
  }

  .reader-console {
    padding: 16px 11px;
  }

  .reading-meta strong,
  .reading-meta span {
    max-width: 128px;
  }
}

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

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