@charset "utf-8";

@font-face {
    font-family: "LceAn Brush";
    src: url("../ttf/不违初心草书.ttf") format("truetype");
    font-display: swap;
}

:root {
    --paper: #fbf8f1;
    --paper-soft: #f6f1e8;
    --surface: #ffffff;
    --ink: #132135;
    --ink-soft: #606875;
    --ink-faint: #9197a1;
    --accent: #3156f5;
    --accent-soft: rgba(49, 86, 245, 0.1);
    --amber: #f2ab00;
    --line: rgba(19, 33, 53, 0.12);
    --line-strong: rgba(19, 33, 53, 0.2);
    --header-height: 60px;
    --page-padding: clamp(24px, 4vw, 64px);
    --content-width: 1180px;
    --radius-card: 18px;
    --shadow-card: 0 12px 34px rgba(32, 37, 44, 0.08);
    --shadow-card-hover: 0 24px 54px rgba(32, 37, 44, 0.16);
    color-scheme: light;
}

html.theme-dark {
    --paper: #0d1118;
    --paper-soft: #121821;
    --surface: #171d27;
    --ink: #f5f0e8;
    --ink-soft: #b7bdc7;
    --ink-faint: #7f8793;
    --accent: #8091ff;
    --accent-soft: rgba(128, 145, 255, 0.14);
    --amber: #f1bd43;
    --line: rgba(255, 255, 255, 0.1);
    --line-strong: rgba(255, 255, 255, 0.18);
    --shadow-card: 0 14px 34px rgba(0, 0, 0, 0.28);
    --shadow-card-hover: 0 24px 60px rgba(0, 0, 0, 0.42);
    color-scheme: dark;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--paper);
}

body {
    margin: 0;
    min-width: 320px;
    color: var(--ink);
    background: var(--paper);
    font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    transition: color 360ms ease, background-color 360ms ease;
}

button,
a {
    font: inherit;
}

a {
    color: inherit;
}

button {
    border: 0;
}

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

:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--accent) 68%, transparent);
    outline-offset: 4px;
}

.material-symbols-rounded {
    font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 20;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    height: var(--header-height);
    background: color-mix(in srgb, var(--paper) 91%, transparent);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(calc(-100% - 8px));
    transition:
        transform 320ms cubic-bezier(0.22, 1, 0.36, 1),
        opacity 220ms ease,
        visibility 0s linear 320ms,
        background-color 360ms ease;
    will-change: transform;
}

body.is-header-visible .site-header {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition-delay: 0s;
}

.header-inner {
    width: 100%;
    height: 100%;
    padding: 0 var(--page-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    text-decoration: none;
    font-size: 23px;
    font-weight: 650;
    letter-spacing: -0.04em;
}

.brand img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    mix-blend-mode: multiply;
    transform: scale(1.08);
    transform-origin: center;
}

html.theme-dark .brand img {
    padding: 3px;
    background: #fff;
    border-radius: 50%;
    mix-blend-mode: normal;
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: 22px;
}

.nav-link,
.icon-link,
.theme-toggle {
    color: var(--ink);
}

.nav-link {
    position: relative;
    padding: 8px 0;
    background: transparent;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: color 180ms ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 2px;
    height: 2px;
    border-radius: 99px;
    background: var(--accent);
    transition: left 180ms ease, right 180ms ease;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--accent);
}

.nav-link.is-active::after {
    left: 0;
    right: 0;
}

.nav-divider {
    width: 1px;
    height: 18px;
    background: var(--line-strong);
}

.icon-link {
    display: inline-grid;
    width: 30px;
    height: 30px;
    place-items: center;
    border-radius: 50%;
    text-decoration: none;
    font-size: 20px;
    transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.icon-link:hover {
    color: var(--accent);
    background: var(--accent-soft);
    transform: translateY(-1px);
}

.theme-toggle {
    position: relative;
    display: grid;
    width: 32px;
    height: 32px;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: transparent;
    box-shadow: none;
    cursor: pointer;
    transition: color 180ms ease, border-color 180ms ease, transform 180ms ease, background-color 360ms ease;
}

.theme-toggle:hover {
    color: var(--accent);
    background: var(--accent-soft);
    transform: rotate(5deg);
}

.theme-icon {
    position: absolute;
    font-size: 19px;
    transition: opacity 240ms ease, transform 240ms ease;
}

.theme-icon-moon {
    opacity: 0;
    transform: rotate(-45deg) scale(0.65);
}

html.theme-dark .theme-icon-sun {
    opacity: 0;
    transform: rotate(45deg) scale(0.65);
}

html.theme-dark .theme-icon-moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

.hero {
    position: relative;
    min-height: 100svh;
    overflow: hidden;
    background: var(--paper);
    isolation: isolate;
}

.hero-copy {
    position: absolute;
    z-index: 4;
    left: var(--page-padding);
    top: 50%;
    width: min(45vw, 650px);
    opacity: var(--hero-copy-opacity, 1);
    transform: translateY(-46%);
    translate: 0 var(--hero-copy-shift, 0px);
    will-change: opacity, translate;
}

.hero-kicker {
    margin: 0 0 28px;
    color: var(--amber);
    font-family: "LceAn Brush", "KaiTi", cursive;
    font-size: clamp(34px, 3vw, 48px);
    line-height: 1;
    letter-spacing: 0.08em;
}

.hero h1 {
    max-width: 680px;
    margin: 0;
    color: var(--ink);
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: clamp(52px, 5.15vw, 78px);
    font-weight: 600;
    line-height: 1.18;
    letter-spacing: -0.06em;
    text-wrap: balance;
}

.headline-brush {
    display: block;
    width: clamp(112px, 10vw, 152px);
    height: auto;
    margin: 26px 0 17px;
    object-fit: contain;
    opacity: 0.92;
}

.hero-note {
    max-width: 430px;
    margin: 0;
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.75;
    letter-spacing: 0.02em;
}

.hero-art {
    position: absolute;
    z-index: 2;
    top: 0;
    right: 0;
    width: min(92vw, 1380px);
    height: 100%;
    margin: 0;
    overflow: hidden;
    opacity: var(--hero-art-opacity, 1);
    translate: var(--hero-art-shift, 0px) 0;
    -webkit-mask-image: url("../img/hero-brush-mask.png");
    mask-image: url("../img/hero-brush-mask.png");
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    clip-path: inset(0 100% 0 0);
    will-change: clip-path, opacity, translate;
}

body.is-ready .hero-art {
    animation: reveal-landscape 1600ms cubic-bezier(0.22, 1, 0.36, 1) 120ms forwards;
}

.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: left center;
    transition: opacity 900ms ease, transform 9s ease;
}

body.is-ready .hero-image {
    transform: scale(1.025);
}

.hero-image-night {
    opacity: 0;
}

html.theme-dark .hero-image-day {
    opacity: 0;
}

html.theme-dark .hero-image-night {
    opacity: 1;
}

.hero-poem {
    position: absolute;
    z-index: 3;
    right: clamp(28px, 4vw, 70px);
    bottom: clamp(72px, 10vh, 120px);
    max-width: 520px;
    color: #fff;
    text-align: right;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.58);
}

.hero-poem span {
    display: block;
    font-family: "Noto Serif SC", serif;
    font-size: clamp(18px, 1.7vw, 26px);
    font-weight: 600;
    line-height: 1.5;
}

.hero-poem small {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    line-height: 1.5;
    opacity: 0.86;
}

.explore-link {
    position: absolute;
    z-index: 5;
    left: calc(var(--page-padding) + min(17vw, 225px));
    bottom: clamp(28px, 5vh, 54px);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--ink-soft);
    opacity: var(--hero-explore-opacity, 1);
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 0.08em;
    transition: color 180ms ease, transform 180ms ease;
}

.explore-link .material-symbols-rounded {
    font-size: 24px;
    animation: float-down 1800ms ease-in-out infinite;
}

.explore-link:hover {
    color: var(--accent);
    transform: translateY(2px);
}

.directory-section {
    scroll-margin-top: var(--header-height);
    min-height: 100vh;
    padding: clamp(78px, 8vw, 116px) var(--page-padding) clamp(72px, 8vw, 108px);
    background: var(--paper);
    border-top: 0;
}

.section-shell {
    width: min(100%, var(--content-width));
    margin: 0 auto;
}

.directory-label {
    margin: 0 0 26px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.17em;
}

.directory-label[hidden] {
    display: none !important;
}

.section-heading {
    display: none;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 38px;
}

.directory-section.is-page-view .section-heading {
    display: flex;
}

.section-eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.section-heading h2 {
    margin: 0;
    color: var(--ink);
    font-family: "Noto Serif SC", serif;
    font-size: clamp(32px, 3.4vw, 46px);
    font-weight: 600;
    letter-spacing: -0.04em;
}

.back-to-directory {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 16px;
    color: var(--ink);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    cursor: pointer;
    transition: color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.back-to-directory[hidden] {
    display: none !important;
}

.back-to-directory:hover {
    color: var(--accent);
    border-color: color-mix(in srgb, var(--accent) 36%, transparent);
    transform: translateY(-1px);
}

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

.nav-card {
    position: relative;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--shadow-card);
    color: #fff;
    text-decoration: none;
    opacity: 0;
    transform: translateY(28px);
    transition:
        opacity 560ms cubic-bezier(0.22, 1, 0.36, 1),
        transform 560ms cubic-bezier(0.22, 1, 0.36, 1),
        box-shadow 260ms ease,
        border-color 260ms ease;
}

.nav-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.nav-card:hover {
    z-index: 2;
    border-color: color-mix(in srgb, var(--accent) 42%, transparent);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-7px);
}

.card-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #6574a8;
}

.card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(8, 12, 18, 0.08), rgba(8, 12, 18, 0.24) 44%, rgba(8, 12, 18, 0.74));
}

.card-image {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform 700ms cubic-bezier(0.22, 1, 0.36, 1), opacity 240ms ease;
}

.nav-card:hover .card-image {
    transform: scale(1.055);
}

.card-badge {
    position: absolute;
    z-index: 3;
    top: 14px;
    right: 14px;
    padding: 6px 10px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 999px;
    background: rgba(20, 24, 31, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.card-copy {
    position: absolute;
    z-index: 3;
    left: 20px;
    right: 20px;
    bottom: 18px;
}

.card-copy h3 {
    margin: 0;
    font-size: clamp(21px, 2vw, 27px);
    font-weight: 650;
    line-height: 1.2;
    letter-spacing: -0.035em;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.48);
}

.card-copy p {
    margin: 7px 0 0;
    overflow: hidden;
    font-size: 13px;
    line-height: 1.5;
    opacity: 0.92;
    text-overflow: ellipsis;
    text-shadow: 0 2px 9px rgba(0, 0, 0, 0.58);
    white-space: nowrap;
}

.content-view {
    animation: content-enter 420ms ease both;
}

.about-page {
    width: 100%;
}

.about-intro {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr) 132px;
    gap: clamp(24px, 3.5vw, 46px);
    align-items: center;
    padding: 6px 0 40px;
    border-bottom: 1px solid var(--line);
}

.about-avatar {
    display: block;
    width: 112px;
    height: 112px;
    object-fit: cover;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
}

.about-role {
    margin: 0 0 9px;
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.about-intro-copy h3 {
    margin: 0;
    color: var(--ink);
    font-family: "Noto Serif SC", serif;
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 600;
    letter-spacing: -0.045em;
}

.about-intro-copy > p:last-child {
    max-width: 690px;
    margin: 14px 0 0;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.9;
}

.about-social {
    display: grid;
}

.about-social a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    color: var(--ink-soft);
    border-bottom: 1px solid var(--line);
    font-size: 12px;
    text-decoration: none;
    transition: color 180ms ease, padding-left 180ms ease;
}

.about-social a:first-child {
    border-top: 1px solid var(--line);
}

.about-social a:hover {
    padding-left: 4px;
    color: var(--accent);
}

.about-social .material-symbols-rounded {
    font-size: 15px;
}

.about-contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 0;
    border-bottom: 1px solid var(--line);
}

.about-contact-item {
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 11px;
    padding: 21px 24px;
    border-right: 1px solid var(--line);
}

.about-contact-item:first-child {
    padding-left: 0;
}

.about-contact-item:last-child {
    border-right: 0;
}

.about-contact-item > .material-symbols-rounded {
    margin-top: 2px;
    color: var(--ink-faint);
    font-size: 18px;
}

.about-contact-item dt {
    margin-bottom: 5px;
    color: var(--ink-faint);
    font-size: 10px;
    letter-spacing: 0.08em;
}

.about-contact-item dd {
    margin: 0;
    color: var(--ink);
    font-size: 13px;
}

.about-contact-item a {
    color: inherit;
    text-decoration: none;
}

.about-contact-item a:hover {
    color: var(--accent);
}

.about-section {
    padding: 42px 0;
    border-bottom: 1px solid var(--line);
}

.about-version-section {
    padding-bottom: 8px;
    border-bottom: 0;
}

.about-section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 36px;
    margin-bottom: 24px;
}

.about-section-heading > div > p {
    margin: 0 0 7px;
    color: var(--accent);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.about-section-heading h3 {
    margin: 0;
    color: var(--ink);
    font-family: "Noto Serif SC", serif;
    font-size: 25px;
    font-weight: 600;
    letter-spacing: -0.035em;
}

.about-section-heading > p {
    max-width: 440px;
    margin: 0;
    color: var(--ink-faint);
    font-size: 12px;
    line-height: 1.7;
    text-align: right;
}

.honor-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.honor-badge {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    min-height: 88px;
    padding: 15px;
    background: color-mix(in srgb, var(--surface) 72%, transparent);
    border: 1px solid var(--line);
    border-radius: 14px;
}

.honor-icon {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    color: var(--amber);
    background: color-mix(in srgb, var(--amber) 9%, var(--surface));
    border: 1px solid color-mix(in srgb, var(--amber) 32%, var(--line));
    border-radius: 50%;
    font-size: 21px;
    font-variation-settings: "FILL" 0, "wght" 420, "GRAD" 0, "opsz" 24;
}

.honor-content {
    min-width: 0;
}

.honor-content strong,
.honor-content small {
    display: block;
}

.honor-content strong {
    color: var(--ink);
    font-size: 13px;
    font-weight: 600;
}

.honor-content small {
    margin-top: 4px;
    overflow: hidden;
    color: var(--ink-faint);
    font-size: 10px;
    line-height: 1.4;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.honor-count {
    color: var(--accent);
    font-family: "Inter", sans-serif;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.version-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.version-cell {
    padding: 19px 20px;
    border-right: 1px solid var(--line);
}

.version-cell:first-child {
    padding-left: 0;
}

.version-cell:last-child {
    border-right: 0;
}

.version-cell span {
    display: block;
    margin-bottom: 7px;
    color: var(--ink-faint);
    font-size: 10px;
    letter-spacing: 0.05em;
}

.version-cell strong,
.version-cell a {
    color: var(--ink);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
}

.version-cell a:hover {
    color: var(--accent);
}

.history-intro,
.more-intro {
    max-width: 680px;
    margin: -10px 0 42px;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.8;
}

.history-list {
    position: relative;
}

.history-list::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 91px;
    width: 1px;
    background: var(--line-strong);
}

.history-year {
    display: grid;
    grid-template-columns: 70px 1fr;
    gap: 44px;
    margin-bottom: 42px;
}

.history-year-label {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    align-self: start;
    color: var(--accent);
    font-family: "Noto Serif SC", serif;
    font-size: 22px;
    font-weight: 600;
}

.history-events {
    display: grid;
}

.history-event {
    position: relative;
    display: grid;
    grid-template-columns: 104px 1fr;
    gap: 20px;
    padding: 0 0 24px;
}

.history-event::before {
    content: "";
    position: absolute;
    top: 7px;
    left: -28px;
    width: 7px;
    height: 7px;
    border: 2px solid var(--paper-soft);
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.history-event time {
    color: var(--ink-faint);
    font-size: 12px;
    line-height: 1.7;
}

.history-event p {
    margin: 0;
    color: var(--ink);
    font-size: 14px;
    line-height: 1.7;
}

.resource-list {
    border-top: 1px solid var(--line);
}

.resource-row {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr) auto;
    gap: 22px;
    align-items: center;
    padding: 24px 0;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    text-decoration: none;
    transition: color 180ms ease, padding-left 180ms ease;
}

.resource-row:hover {
    padding-left: 8px;
    color: var(--accent);
}

.resource-index {
    color: var(--ink-faint);
    font-family: "Inter", sans-serif;
    font-size: 12px;
    letter-spacing: 0.08em;
}

.resource-copy h3 {
    margin: 0 0 6px;
    font-family: "Noto Serif SC", serif;
    font-size: 22px;
    font-weight: 600;
}

.resource-copy p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 13px;
    line-height: 1.7;
}

.resource-row .material-symbols-rounded {
    color: var(--ink-faint);
    font-size: 20px;
    transition: color 180ms ease, transform 180ms ease;
}

.resource-row:hover .material-symbols-rounded {
    color: var(--accent);
    transform: translate(3px, -3px);
}

.section-loading,
.section-error {
    margin: 70px 0;
    color: var(--ink-soft);
    text-align: center;
}

html.theme-dark .about-container {
    background: var(--paper-soft);
}

html.theme-dark .about-card,
html.theme-dark .about-header {
    color: var(--ink);
    background: var(--surface);
}

html.theme-dark .about-header {
    border-bottom-color: var(--line);
}

html.theme-dark .about-title,
html.theme-dark .section-title,
html.theme-dark .contact-link,
html.theme-dark .contact-text,
html.theme-dark .social-link,
html.theme-dark .honor-text,
html.theme-dark .version-value {
    color: var(--ink);
}

html.theme-dark .about-subtitle,
html.theme-dark .section-text,
html.theme-dark .version-label {
    color: var(--ink-soft);
}

html.theme-dark .contact-item,
html.theme-dark .social-link,
html.theme-dark .honor-item,
html.theme-dark .version-row {
    background: color-mix(in srgb, var(--surface) 72%, #000);
}

.site-footer {
    padding: 0 var(--page-padding);
    color: var(--ink-faint);
    background: var(--paper);
    border-top: 1px solid var(--line);
    font-size: 12px;
}

.footer-inner {
    width: min(100%, var(--content-width));
    min-height: 46px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.footer-identity,
.footer-metrics {
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}

.site-footer a {
    color: inherit;
    text-decoration: none;
}

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

.footer-separator {
    color: var(--line-strong);
}

.footer-metrics {
    gap: 18px;
}

.footer-metrics strong {
    color: var(--ink-soft);
    font-weight: 500;
}

@keyframes reveal-landscape {
    to {
        clip-path: inset(0 0 0 0);
    }
}

@keyframes float-down {
    0%,
    100% {
        transform: translateY(-2px);
    }
    50% {
        transform: translateY(5px);
    }
}

@keyframes content-enter {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1040px) {
    :root {
        --page-padding: clamp(22px, 4vw, 42px);
    }

    .hero-copy {
        width: 48vw;
    }

    .hero-art {
        width: 84vw;
    }

    .hero h1 {
        font-size: clamp(48px, 6vw, 64px);
    }

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

    .about-intro {
        grid-template-columns: 96px minmax(0, 1fr);
    }

    .about-avatar {
        width: 96px;
        height: 96px;
    }

    .about-social {
        grid-column: 2;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 22px;
    }

    .about-social a:first-child {
        border-top: 0;
    }

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

    .version-cell:nth-child(2) {
        border-right: 0;
    }

    .version-cell:nth-child(n + 3) {
        border-top: 1px solid var(--line);
    }
}

@media (max-width: 720px) {
    :root {
        --header-height: 56px;
        --page-padding: 18px;
    }

    .brand {
        gap: 5px;
        font-size: 20px;
    }

    .brand img {
        width: 30px;
        height: 30px;
        transform: scale(1);
    }

    .primary-nav {
        gap: 10px;
    }

    .nav-link {
        font-size: 13px;
    }

    .nav-divider {
        display: none;
    }

    .icon-link {
        width: 27px;
        height: 27px;
        font-size: 18px;
    }

    .theme-toggle {
        width: 29px;
        height: 29px;
    }

    .hero-copy {
        top: 21%;
        left: 24px;
        width: calc(100% - 48px);
        transform: none;
    }

    .hero-kicker {
        margin-bottom: 18px;
        font-size: 34px;
    }

    .hero h1 {
        max-width: 340px;
        font-size: clamp(40px, 11vw, 52px);
        line-height: 1.22;
    }

    .headline-brush {
        width: 105px;
        margin: 18px 0 13px;
    }

    .hero-note {
        max-width: 290px;
        font-size: 13px;
        line-height: 1.65;
    }

    .hero-art {
        top: 34%;
        width: 112vw;
        height: 66%;
        transform: translateX(10vw);
        -webkit-mask-size: 112% 100%;
        mask-size: 112% 100%;
        -webkit-mask-position: left center;
        mask-position: left center;
    }

    .hero-poem {
        right: 28px;
        bottom: 58px;
        max-width: 310px;
    }

    .hero-poem span {
        font-size: 16px;
    }

    .hero-poem small {
        display: none;
    }

    .explore-link {
        left: 24px;
        bottom: 22px;
        align-items: flex-start;
    }

    .section-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .about-intro {
        grid-template-columns: 72px minmax(0, 1fr);
        gap: 18px;
        padding-bottom: 30px;
    }

    .about-avatar {
        width: 72px;
        height: 72px;
    }

    .about-intro-copy h3 {
        font-size: 27px;
    }

    .about-intro-copy > p:last-child {
        grid-column: 1 / -1;
        font-size: 13px;
        line-height: 1.8;
    }

    .about-social {
        grid-column: 1 / -1;
        gap: 14px;
    }

    .about-contact-grid {
        grid-template-columns: 1fr;
    }

    .about-contact-item,
    .about-contact-item:first-child {
        padding: 16px 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .about-contact-item:last-child {
        border-bottom: 0;
    }

    .about-section {
        padding: 34px 0;
    }

    .about-section-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
        margin-bottom: 20px;
    }

    .about-section-heading > p {
        max-width: 320px;
        text-align: left;
    }

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

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

    .version-cell,
    .version-cell:first-child {
        padding: 16px 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .version-cell:nth-child(n + 3) {
        border-top: 0;
    }

    .version-cell:last-child {
        border-bottom: 0;
    }

    .history-list::before {
        left: 15px;
    }

    .history-year {
        display: block;
        margin-bottom: 34px;
        padding-left: 42px;
    }

    .history-year-label {
        position: static;
        margin: 0 0 18px;
    }

    .history-event {
        grid-template-columns: 82px 1fr;
        gap: 14px;
    }

    .history-event::before {
        left: -30px;
    }

    .resource-row {
        grid-template-columns: 40px minmax(0, 1fr) auto;
        gap: 12px;
        padding: 20px 0;
    }

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

    .footer-inner {
        min-height: 48px;
        gap: 10px;
        font-size: 11px;
    }

    .footer-metrics {
        gap: 10px;
    }

    .footer-ip {
        display: none;
    }
}

@media (max-width: 420px) {
    .header-inner {
        padding: 0 14px;
    }

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

    .primary-nav {
        gap: 7px;
    }

    .nav-link {
        font-size: 12px;
    }

    .hero-copy {
        left: 20px;
        width: calc(100% - 40px);
    }

    .hero-art {
        width: 125vw;
        transform: translateX(20vw);
    }

    .hero-poem {
        display: none;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 3px;
        padding: 8px 0;
    }

    .footer-identity,
    .footer-metrics {
        gap: 8px;
    }

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

    .history-event {
        grid-template-columns: 1fr;
        gap: 3px;
    }
}

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

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

    .hero-art {
        clip-path: inset(0);
    }
}