:root {
    color-scheme: light dark;
    --page-pad: clamp(1.25rem, 3.4vw, 3.25rem);
    --page: #fff;
    --ink: #282828;
    --secondary: #504945;
    --nav: #676767;
    --divider: color-mix(in srgb, #282828 10%, transparent);
    --surface: #f4f4f1;
    --cjk-text: #40403d;
    --notes-link: #6a6a6a;
    --notes-underline: #c4c4c4;
    --menu-shadow: rgba(40, 40, 40, 0.12);
    --reading-font: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --cjk-reading-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
    --ui-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --page: #151514;
        --ink: #f1efe9;
        --secondary: #c9c5bb;
        --nav: #aaa69c;
        --divider: color-mix(in srgb, #f1efe9 16%, transparent);
        --surface: #242421;
        --cjk-text: #d8d4ca;
        --notes-link: #b8b4aa;
        --notes-underline: #66635d;
        --menu-shadow: rgba(0, 0, 0, 0.35);
    }
}

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

html {
    background: var(--page);
    color: var(--ink);
    scroll-behavior: smooth;
}

html[data-language="en"] [data-lang="zh"],
html[data-language="zh"] [data-lang="en"] {
    display: none !important;
}

body {
    margin: 0;
    background: var(--page);
    color: var(--ink);
    font-family: var(--reading-font);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration-color: var(--divider);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
    transition: color 160ms ease, opacity 160ms ease, text-decoration-color 160ms ease;
}

a:hover {
    color: var(--secondary);
    text-decoration-color: currentColor;
}

:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 20;
    min-height: 44px;
    padding: 0.55rem 0.85rem;
    background: var(--page);
    color: var(--ink);
    font-family: var(--ui-font);
    font-size: 0.875rem;
    line-height: 1.4;
    transform: translateY(calc(-100% - 1rem));
    transition: transform 160ms ease;
}

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

main.site-shell {
    min-height: 100vh;
    padding: var(--page-pad);
    container-type: inline-size;
}

article.content-frame {
    width: min(100%, 600px);
    margin-inline: auto;
}

.home-layout,
.home-copy {
    min-width: 0;
}

.home-layout {
    position: relative;
}

.home-copy {
    width: min(100%, 600px);
}

.site-title {
    margin: 0;
    color: var(--ink);
    font-family: var(--reading-font);
    font-size: clamp(2.2rem, 3.5vw, 2.65rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.profile-heading {
    margin: 0 0 2.2rem;
}

.mobile-profile-visual {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    margin-top: 1.5rem;
    overflow: hidden;
    border-radius: 8px;
}

.mobile-profile-visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 70% center;
}

.home-visual {
    display: none;
}

.bio-section {
    color: var(--secondary);
}

.bio-section p {
    margin: 0 0 1em;
}

.bio-section p:last-child {
    margin-bottom: 0;
}

.language-toggle {
    display: inline-flex;
    width: 32px;
    height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--nav);
    font: inherit;
    cursor: pointer;
    transition: background-color 160ms ease, color 160ms ease;
}

.language-toggle:hover {
    background: transparent;
    color: var(--ink);
}

.language-toggle svg {
    width: 18px;
    height: 18px;
}

.language-picker {
    position: relative;
    display: flex;
    min-height: 44px;
    align-items: center;
}

.language-picker--corner {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 5;
}

.language-menu {
    position: absolute;
    top: calc(100% + 0.4rem);
    right: 0;
    z-index: 10;
    width: 132px;
    padding: 0.3rem;
    border: 1px solid var(--divider);
    border-radius: 8px;
    background: var(--page);
    box-shadow: 0 10px 30px var(--menu-shadow);
}

.language-menu[hidden] {
    display: none;
}

.language-menu button,
.language-menu a {
    display: flex;
    width: 100%;
    min-height: 38px;
    padding: 0.45rem 0.6rem;
    align-items: center;
    justify-content: space-between;
    border: 0;
    border-radius: 5px;
    background: transparent;
    color: var(--secondary);
    font: inherit;
    text-align: left;
    cursor: pointer;
    text-decoration: none;
}

.language-menu button:hover,
.language-menu button:focus-visible,
.language-menu a:hover,
.language-menu a:focus-visible {
    background: var(--surface);
    color: var(--ink);
}

.language-menu button[aria-checked="true"]::after,
.language-menu a[aria-checked="true"]::after {
    color: var(--ink);
    content: "✓";
}

.bio-view-header {
    display: flex;
    margin: 2rem 0 1.6rem;
    align-items: end;
    justify-content: space-between;
    gap: 1.5rem;
    border-bottom: 1px solid var(--divider);
    color: var(--nav);
    font-family: var(--ui-font);
    font-size: 0.92rem;
    line-height: 1.35;
}

.bio-view-header>span {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
}

.bio-view-controls {
    display: flex;
    align-items: end;
    gap: 0;
}

.bio-view-tabs {
    display: flex;
    align-items: end;
    gap: 0.35rem;
}

.bio-view-tabs button {
    position: relative;
    min-height: 44px;
    padding: 0 0.65rem;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--nav);
    font: inherit;
    cursor: pointer;
}

.bio-view-tabs button[aria-selected="true"] {
    color: var(--ink);
}

.bio-view-tabs button[aria-selected="true"]::after {
    position: absolute;
    right: 0;
    bottom: -1px;
    left: 0;
    height: 1px;
    background: var(--ink);
    content: "";
}

.bio-view-panel[hidden] {
    display: none;
}

#bio-default .bio-story-break {
    margin-top: 1.55em;
}

#bio-default .bio-thesis {
    margin-block: 1.45em;
    color: var(--ink);
    font-size: 1.04em;
    line-height: 1.68;
}

#bio-default .bio-closing {
    margin-top: 1.8em;
}

#bio-default .bio-closing p:first-child {
    margin-bottom: 0.45em;
}

#bio-default .bio-closing-question {
    color: var(--ink);
    font-size: 1.05em;
    line-height: 1.65;
}

.bio-more {
    margin-top: 1.8rem;
    border-top: 1px solid var(--divider);
}

.bio-more summary {
    position: relative;
    display: flex;
    min-height: 44px;
    padding: 0.8rem 2rem 0.8rem 0;
    align-items: center;
    color: var(--nav);
    font-family: var(--ui-font);
    font-size: 0.82rem;
    line-height: 1.4;
    cursor: pointer;
    list-style: none;
    transition: color 160ms ease;
}

.bio-more summary::-webkit-details-marker {
    display: none;
}

.bio-more summary::after {
    position: absolute;
    right: 0;
    color: var(--nav);
    content: "+";
    font-size: 1rem;
    font-weight: 400;
}

.bio-more[open] summary::after {
    content: "−";
}

.bio-more summary:hover,
.bio-more summary:focus-visible {
    color: var(--ink);
}

.bio-more-content {
    padding-top: 1rem;
}

.bio-more-content p:first-child {
    margin-top: 0;
}

html[data-language="zh"] .bio-view-panel [data-lang="zh"] {
    color: var(--cjk-text);
    font-family: var(--cjk-reading-font);
    font-size: 0.98em;
    font-weight: 400;
    letter-spacing: 0;
    line-height: 1.82;
}

html[data-language="zh"] .bio-view-panel [data-lang="zh"] strong {
    color: var(--ink);
    font-weight: 600;
}

.world-section {
    margin-top: clamp(3.75rem, 9vw, 6rem);
    scroll-margin-top: var(--page-pad);
}

.content-section {
    margin-top: 2.75rem;
}

.content-stack>.content-section:first-child {
    margin-top: 0;
}

.content-section h2,
.dream-section-title {
    margin: 0 0 0.35rem;
    color: var(--ink);
    font-family: var(--reading-font);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.4;
}

.education-list,
.index-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.education-list,
.index-list {
    border-top: 1px solid var(--divider);
    border-bottom: 1px solid var(--divider);
}

.education-row,
.index-row {
    display: grid;
    min-width: 0;
    min-height: 44px;
    padding: 0.72em 0;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 1.25rem;
    border-bottom: 1px solid var(--divider);
    transition: opacity 160ms ease;
}

.education-row:last-child,
.index-row:last-child {
    border-bottom: 0;
}

.education-row p,
.index-row strong,
.row-copy {
    min-width: 0;
    margin: 0;
    font-weight: 400;
}

.row-copy strong,
.row-copy small {
    display: block;
}

.row-copy small {
    margin-top: 0.1rem;
    color: var(--nav);
    font-family: var(--ui-font);
    font-size: 0.8rem;
    line-height: 1.45;
}

.education-row time,
.row-meta {
    color: var(--nav);
    font-family: var(--ui-font);
    font-size: 0.8rem;
    line-height: 1.5;
    text-align: right;
}

.education-row>div {
    min-width: 0;
}

.index-row>a,
a.index-row {
    min-height: 44px;
    color: inherit;
    text-decoration: none;
}

.index-row>a {
    display: flex;
    margin-block: -0.72em;
    padding-block: 0.72em;
    align-items: center;
}

.dream-section {
    padding-top: clamp(0.25rem, 1vw, 0.75rem);
}

.dream-section .index-list {
    margin-top: 0;
}

.dream-entry-row .row-copy strong {
    font-size: 1.08rem;
    letter-spacing: -0.01em;
}

.board-entry-row .row-meta {
    transition: color 160ms ease;
}

.board-entry-row:hover .row-meta {
    color: var(--ink);
}

.notes-section {
    margin-top: clamp(2.5rem, 5vw, 3.5rem);
}

.notes-section h2 {
    margin: 0 0 0.85rem;
    color: var(--ink);
    font-family: var(--reading-font);
    font-size: 1.12rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.45rem 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.notes-grid li {
    position: relative;
    padding-left: 1.15rem;
    font-size: 0.98rem;
    line-height: 1.6;
}

.notes-grid li::before {
    position: absolute;
    top: 0.6em;
    left: 0;
    width: 5px;
    height: 5px;
    background: var(--ink);
    content: "";
}

.notes-grid a {
    color: var(--notes-link);
    text-decoration: underline;
    text-decoration-color: var(--notes-underline);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.28em;
    transition: color 150ms ease, text-decoration-color 150ms ease;
}

.notes-grid a:hover {
    color: var(--ink);
    text-decoration-color: var(--ink);
}

.home-footer {
    display: flex;
    margin-top: clamp(4.5rem, 10vw, 7rem);
    padding-top: 1.1rem;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
    border-top: 1px solid var(--divider);
    color: var(--nav);
    font-family: var(--ui-font);
    font-size: 0.75rem;
    line-height: 1.5;
}

.home-footer p {
    margin: 0;
}

.footer-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.35rem 0.9rem;
    text-align: right;
}

@media (hover: hover) and (pointer: fine) {

    .education-list:hover .education-row,
    .index-list:hover .index-row {
        opacity: 0.72;
    }

    .education-list .education-row:hover,
    .index-list .index-row:hover {
        opacity: 1;
    }
}

@media (min-width: 1100px) {
    .mobile-profile-visual {
        display: none;
    }

    .home-layout {
        width: min(100cqi, 1500px);
        margin-inline: calc((600px - min(100cqi, 1500px)) / 2);
        display: grid;
        grid-template-columns: minmax(500px, 600px) minmax(320px, 469px);
        align-items: start;
        justify-content: space-between;
        column-gap: 2rem;
    }

    .home-copy {
        grid-column: 1;
        grid-row: 1;
        font-size: 19px;
    }

    .home-visual {
        position: sticky;
        top: var(--page-pad);
        display: block;
        grid-column: 2;
        grid-row: 1;
        width: 100%;
        height: min(760px, calc(100svh - var(--page-pad) - var(--page-pad) - 134px));
        min-height: min(62svh, 680px);
        margin-top: 134px;
        overflow: hidden;
        border-radius: 8px;
    }

    .home-visual-image {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: 70% center;
    }

    .home-visual picture {
        display: block;
        width: 100%;
        height: 100%;
    }
}

@media (max-width: 639px) {
    main.site-shell {
        padding: 2.5rem 1.25rem 1.25rem;
    }

    .education-row,
    .index-row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .education-row time,
    .row-meta {
        text-align: left;
    }

    .dream-entry-row {
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: end;
    }

    .home-footer {
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-stats {
        justify-content: flex-start;
        text-align: left;
    }
}

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

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}