:root {
    --ink: #14213d;
    --muted: #637084;
    --paper: #f5f7fb;
    --line: #e3e8f0;
    --yellow: #ffda54;
    --blue: #335bdf;
    --radius: 20px;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
}

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

button, input {
    font: inherit;
}

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

button {
    cursor: pointer;
}

a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 3px solid var(--blue);
    outline-offset: 5px;
}

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

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

h1, h2, h3 {
    line-height: 1.4;
}

h2 {
    font-size: 26px;
    letter-spacing: -0.6px;
}

h3 {
    font-size: 18px;
}

p {
    color: var(--muted);
}

.container {
    width: min(1200px, calc(100% - 48px));
    margin-inline: auto;
}

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 1.3em;
    font-family: "Segoe UI Symbol", sans-serif;
    font-weight: 600;
}

.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--line);
}

.header-inner {
    padding-block: 23px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.brand img {
    border-radius: 14px;
}

.brand strong, .brand small {
    display: block;
}

.brand strong {
    font-size: 22px;
    letter-spacing: 1px;
    line-height: 1.3;
}

.brand small {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 1px;
}

#main-nav {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-top: 22px;
}

#main-nav a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 6px 16px;
    border-bottom: 3px solid transparent;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
}

#main-nav a:hover, #main-nav a.active {
    color: var(--blue);
    border-color: var(--blue);
}

.menu-toggle {
    display: none;
}

.section {
    margin-block: 56px;
}

.hero {
    display: grid;
    grid-template-columns: 1.08fr 1fr;
    min-height: 460px;
    margin-top: 36px;
    border-radius: 24px;
    overflow: hidden;
    background: var(--ink);
    color: white;
}

.hero-copy {
    padding: 42px 40px;
}

.eyebrow {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
}

.hero .eyebrow {
    color: var(--yellow);
}

.hero h1 {
    display: inline-block;
    margin-top: 20px;
    padding: 3px 10px;
    border: 1px solid #607087;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
}

.hero-title {
    margin-top: 12px;
    color: white;
    white-space: pre-line;
    font-size: clamp(32px, 3.5vw, 46px);
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-desc {
    max-width: 450px;
    margin-top: 18px;
    color: #c4cee0;
    font-size: 14px;
}

.hero-actions, .subscribe-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 25px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    min-height: 44px;
    border: 0;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 700;
    transition: transform 160ms ease, background 160ms ease;
}

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

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

.dark {
    color: white;
    background: var(--ink);
}

.ghost {
    color: white;
    border: 1px solid #607087;
}

.light {
    background: #e8edf6;
    color: var(--ink);
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 26px;
    color: #b9c6db;
    font-size: 12px;
}

.hero-feature {
    position: relative;
    min-width: 0;
    background: #477188;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
    object-position: center;
}

.hero-feature::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 25%, #111e37ed 100%);
}

.hero-caption {
    position: absolute;
    z-index: 1;
    left: 32px;
    right: 32px;
    bottom: 32px;
}

.hero-caption h2 {
    margin-block: 8px;
    font-size: 32px;
}

.hero-caption p {
    color: #edf1f8;
    margin-bottom: 16px;
}

.hero-caption span {
    font-size: 12px;
    letter-spacing: 1px;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    margin-bottom: 24px;
}

.section-heading h2 {
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-heading h2 .icon {
    color: var(--blue);
}

.section-heading p {
    margin-top: 7px;
    font-size: 14px;
}

.text-link {
    flex-shrink: 0;
    color: var(--blue);
    font-size: 14px;
    font-weight: 700;
}

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

.category-card {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: white;
    transition: border-color 180ms ease, transform 180ms ease;
}

.category-card:hover {
    transform: translateY(-3px);
    border-color: #93a9eb;
}

.category-card > .icon {
    width: 38px;
    height: 38px;
    margin-bottom: 12px;
    border-radius: 10px;
    color: #335bdf;
    background: #edf2ff;
    font-size: 24px;
}

.category-card:nth-child(2n) > .icon {
    background: #fff5d2;
    color: #806115;
}

.category-card p {
    margin-top: 9px;
    font-size: 14px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 20px;
}

.book-card {
    min-width: 0;
}

.cover {
    display: block;
    position: relative;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    border-radius: 12px;
    background: #dde5ef;
}

.cover img {
    height: 100%;
    width: 100%;
    transition: transform 200ms ease;
}

.cover:hover img {
    transform: scale(1.04);
}

.cover-tag {
    position: absolute;
    bottom: 8px;
    left: 8px;
    padding: 2px 8px;
    background: #14213de0;
    border-radius: 4px;
    color: white;
    font-size: 12px;
}

.book-card > .eyebrow {
    margin-top: 13px;
    letter-spacing: 0;
    font-weight: 500;
}

.book-card h3 {
    margin-top: 5px;
    min-height: 50px;
    font-size: 16px;
}

.synopsis {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-top: 5px;
    height: 46px;
    font-size: 13px;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    font-size: 12px;
    color: var(--muted);
}

.save {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--muted);
    background: white;
    font-size: 18px;
}

[data-save][aria-pressed="true"] {
    background: var(--yellow);
    color: var(--ink);
    border-color: #edca44;
}

.ranking-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.rank-item {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: white;
}

.rank-no {
    font-size: 28px;
    font-weight: 800;
    color: #9daac0;
    font-style: italic;
}

.rank-item:first-child .rank-no {
    color: #a57903;
}

.rank-item > a {
    flex: 0 0 64px;
}

.rank-item img {
    width: 64px;
    height: 86px;
    border-radius: 7px;
}

.rank-item > div {
    flex: 1;
    min-width: 0;
}

.rank-item p:last-child {
    margin-top: 6px;
    font-size: 13px;
}

.korean-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 28px;
    padding: 28px;
    background: #e9eefb;
    border-radius: var(--radius);
}

.korean-intro {
    align-self: center;
}

.korean-intro h3 {
    margin-block: 14px;
    white-space: pre-line;
    font-size: 28px;
}

.korean-intro .button {
    margin-top: 24px;
}

.korean-cards {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.korean-cards .synopsis {
    display: none;
}

.feature-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: white;
}

.feature-image img {
    width: 100%;
    height: 100%;
    max-height: 480px;
    aspect-ratio: 4 / 3;
}

.feature-copy {
    padding: 36px;
    align-self: center;
}

.feature-copy h3 {
    margin-block: 10px 16px;
    font-size: 30px;
}

.feature-copy ul {
    padding-left: 20px;
    color: var(--muted);
    font-size: 14px;
    margin-block: 20px;
}

.schedule {
    padding: 8px 28px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: white;
}

.schedule-row {
    display: grid;
    grid-template-columns: 86px minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    padding-block: 22px;
    border-bottom: 1px solid var(--line);
}

.schedule-row:last-child {
    border: 0;
}

.schedule-row time {
    color: var(--blue);
    font-size: 22px;
    font-weight: 700;
}

.schedule-row p {
    margin-top: 4px;
    font-size: 14px;
}

.pill {
    display: inline-block;
    padding: 5px 11px;
    border-radius: 6px;
    color: #4c6084;
    background: #edf1f8;
    font-size: 12px;
}

.shelf-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 38px;
    padding: 32px;
    background: #fff7d9;
    border: 1px solid #eddfa8;
    border-radius: var(--radius);
}

.shelf-intro {
    align-self: center;
}

.shelf-intro > .icon {
    font-size: 36px;
}

.shelf-intro h3 {
    margin-block: 12px;
    font-size: 24px;
}

.shelf-count {
    margin-top: 20px;
    color: #7b6014;
    font-weight: 700;
}

.shelf-cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.shelf-cards .book-card {
    padding: 16px;
    border: 1px solid #ece1ba;
    background: white;
    border-radius: 14px;
}

.shelf-cards .cover {
    aspect-ratio: 5 / 4;
}

.shelf-cards .book-card h3 {
    min-height: 0;
}

.ending-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.ending-card {
    padding: 25px;
    border: 1px solid var(--line);
    border-top: 3px solid #7b96dd;
    border-radius: 12px;
    background: white;
}

.ending-card h3 {
    margin-block: 10px;
}

.ending-card p {
    margin-bottom: 20px;
    font-size: 14px;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
    list-style: none;
    padding: 28px 0 0;
    border-top: 1px solid #ccd5e4;
}

.step-number {
    color: var(--blue);
    font-size: 14px;
    font-weight: 800;
}

.steps h3 {
    margin-block: 10px;
}

.steps p {
    font-size: 14px;
}

.about-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 48px;
    padding: 36px;
    background: white;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.about-layout h3 {
    margin-bottom: 18px;
    font-size: 24px;
}

.about-layout p + p {
    margin-top: 16px;
}

.about-layout aside {
    padding: 28px;
    border-left: 3px solid var(--yellow);
    background: #f6f8fc;
    align-self: center;
}

.about-layout aside strong {
    display: block;
    margin-bottom: 14px;
}

.faq-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 16px;
}

details {
    padding: 21px 24px;
    background: white;
    border: 1px solid var(--line);
    border-radius: 12px;
}

summary {
    cursor: pointer;
    font-weight: 700;
}

details p {
    margin-top: 16px;
    font-size: 14px;
}

.subscribe {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 190px;
    align-items: center;
    gap: 50px;
    padding: 40px;
    border-radius: var(--radius);
    background: var(--ink);
    color: white;
}

.subscribe > div > .eyebrow {
    color: var(--yellow);
}

.subscribe h2 {
    margin-block: 10px 16px;
}

.subscribe p {
    color: #c4cee0;
}

.subscribe-actions span {
    color: #c4cee0;
    font-size: 12px;
}

.subscribe-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 18px;
    border: 1px solid #64708a;
    border-radius: 14px;
}

.subscribe-brand img {
    border-radius: 20px;
    margin-bottom: 4px;
}

.subscribe-brand span {
    color: #c4cee0;
    font-size: 12px;
}

footer {
    padding-block: 30px;
    border-top: 1px solid var(--line);
    background: white;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 22px;
}

.footer-inner > div:nth-child(2) {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 14px;
}

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

.footer-inner > p {
    width: 100%;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}

.page-intro, .article-intro {
    margin-top: 36px;
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: white;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-bottom: 28px;
    font-size: 14px;
    color: var(--muted);
}

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

.page-intro h1, .article-intro h1 {
    margin-block: 12px;
    font-size: 38px;
}

.category-slogan {
    margin-bottom: 12px;
    color: var(--ink);
    font-size: 22px;
}

.tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 22px;
    color: var(--muted);
    font-size: 14px;
}

.editor-note {
    padding: 32px;
    border-left: 4px solid var(--yellow);
    background: white;
}

.editor-note p + p {
    margin-top: 16px;
}

.editor-note .button {
    margin-top: 22px;
}

.reading-note {
    margin-top: 28px;
    padding: 20px 24px;
    border-radius: 10px;
    background: #edf2fa;
}

.reading-note h2 {
    font-size: 18px;
    margin-bottom: 8px;
}

.reading-note p {
    font-size: 14px;
}

.reader {
    max-width: 820px;
    margin-inline: auto;
    padding: 40px;
    background: white;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.story-scene {
    margin-top: 36px;
}

.story-scene h2 {
    margin-bottom: 18px;
    font-size: 22px;
}

.story-scene p {
    font-size: 18px;
    color: #34425a;
    line-height: 2.1;
}

.story-scene figure {
    margin-top: 24px;
}

.story-scene img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    border-radius: 12px;
    background: #eaf0f7;
}

figcaption {
    margin-top: 10px;
    font-size: 12px;
    color: var(--muted);
    text-align: center;
}

.chapter-end {
    margin-top: 40px;
    padding: 30px;
    border-top: 1px solid var(--line);
    text-align: center;
}

.chapter-end > .icon {
    color: var(--blue);
    font-size: 30px;
}

.chapter-end h2 {
    margin-block: 10px;
    font-size: 22px;
}

.chapter-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: 10;
    padding: 12px;
    background: white;
}

.skip-link:focus {
    top: 12px;
}

#toast {
    display: none;
    position: fixed;
    left: 50%;
    bottom: 24px;
    z-index: 20;
    transform: translateX(-50%);
    max-width: calc(100% - 32px);
    padding: 12px 22px;
    border-radius: 10px;
    background: var(--ink);
    color: white;
    box-shadow: 0 6px 30px #14213d30;
    font-size: 14px;
}

#toast.visible {
    display: block;
}

@media (max-width: 1050px) {
    #main-nav {
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 5px 18px;
    }

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

    .hero-copy {
        padding: 32px;
    }

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

    .korean-intro h3 {
        white-space: normal;
    }

    .rank-item {
        gap: 12px;
        padding: 16px;
    }

    .rank-item > .icon {
        display: none;
    }

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

    .shelf-layout {
        gap: 24px;
    }

    .about-layout {
        gap: 24px;
    }
}

@media (max-width: 700px) {
    .container {
        width: calc(100% - 32px);
    }

    .header-inner {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        padding-block: 16px;
    }

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

    .menu-toggle {
        display: block;
        width: 44px;
        height: 44px;
        border: 1px solid var(--line);
        border-radius: 8px;
        background: white;
        color: var(--ink);
        font-size: 24px;
    }

    #main-nav {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 4px;
        width: 100%;
        margin-top: 14px;
    }

    html.js #main-nav:not(.open) {
        display: none;
    }

    #main-nav a {
        padding: 12px 2px;
        font-size: 12px;
        gap: 3px;
    }

    .section {
        margin-block: 40px;
    }

    .hero {
        grid-template-columns: 1fr;
        margin-top: 24px;
        border-radius: 18px;
    }

    .hero-copy {
        padding: 28px 24px;
    }

    .hero-feature {
        min-height: 300px;
    }

    .hero-caption {
        left: 24px;
        right: 24px;
        bottom: 24px;
    }

    .hero-title {
        font-size: 38px;
    }

    .hero-meta {
        gap: 10px;
    }

    h2 {
        font-size: 22px;
    }

    .section-heading {
        align-items: flex-start;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 20px;
    }

    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px 16px;
    }

    .category-card {
        padding: 16px;
    }

    .categories-grid {
        gap: 12px;
    }

    .category-card h3 {
        font-size: 16px;
    }

    .category-card p {
        font-size: 13px;
    }

    .ranking-grid, .feature-layout, .about-layout, .faq-list, .shelf-layout {
        grid-template-columns: 1fr;
    }

    .rank-item {
        gap: 16px;
    }

    .korean-layout, .shelf-layout {
        padding: 20px;
    }

    .korean-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 22px 14px;
    }

    .korean-intro h3 {
        font-size: 26px;
    }

    .feature-copy {
        padding: 24px;
    }

    .feature-copy h3 {
        font-size: 26px;
    }

    .schedule {
        padding-inline: 18px;
    }

    .schedule-row {
        grid-template-columns: 62px minmax(0, 1fr);
        gap: 14px;
    }

    .schedule-row > .pill {
        grid-column: 2;
        justify-self: start;
    }

    .schedule-row time {
        font-size: 19px;
    }

    .shelf-cards {
        gap: 12px;
    }

    .shelf-cards .book-card {
        padding: 10px;
    }

    .shelf-cards .synopsis, .shelf-cards .eyebrow {
        display: none;
    }

    .shelf-cards .card-bottom {
        flex-wrap: wrap;
    }

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

    .ending-card {
        padding: 18px;
    }

    .ending-card h3 {
        font-size: 16px;
    }

    .steps {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .steps li {
        padding-bottom: 20px;
        border-bottom: 1px solid var(--line);
    }

    .about-layout {
        padding: 24px;
    }

    .subscribe {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 26px;
    }

    .subscribe-brand {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 12px;
    }

    .subscribe-brand img {
        width: 44px;
        height: 44px;
        border-radius: 10px;
    }

    .page-intro, .article-intro {
        margin-top: 24px;
        padding: 24px;
    }

    .page-intro h1, .article-intro h1 {
        font-size: 30px;
    }

    .reader {
        padding: 22px;
    }

    .story-scene p {
        font-size: 17px;
    }

    .chapter-end {
        padding: 24px 0;
    }

    .chapter-nav {
        flex-direction: column;
    }

    .reading-note {
        padding: 18px;
    }
}

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

    * {
        transition: none !important;
    }
}