/*
Theme Name: ZHJ Story
Theme URI: https://zhjstory.com
Author: ZHJ Story
Description: 华夏叙事志双语时间线与资料档案主题。
Version: 1.0.0
Requires at least: 6.5
Requires PHP: 8.1
Text Domain: zhjstory
*/

:root {
    --paper: #f2eddf;
    --paper-bright: #fbf8ef;
    --ink: #171b18;
    --ink-soft: #49504a;
    --line: rgba(23, 27, 24, 0.17);
    --line-strong: rgba(23, 27, 24, 0.35);
    --cinnabar: #b63a2b;
    --cinnabar-dark: #7b241d;
    --jade: #315f54;
    --jade-pale: #d9e4dc;
    --gold: #aa7b35;
    --shadow: 0 26px 70px rgba(42, 35, 22, 0.12);
    --serif-cn: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
    --sans-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --serif-en: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
    --sans-en: "Avenir Next", Avenir, "Gill Sans", sans-serif;
    --content: 1240px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 12% 8%, rgba(182, 58, 43, 0.08), transparent 24rem),
        radial-gradient(circle at 82% 28%, rgba(49, 95, 84, 0.09), transparent 32rem),
        repeating-linear-gradient(0deg, rgba(23, 27, 24, 0.018) 0, rgba(23, 27, 24, 0.018) 1px, transparent 1px, transparent 5px),
        var(--paper);
    font-family: var(--sans-cn);
    font-size: 17px;
    line-height: 1.75;
    text-rendering: optimizeLegibility;
}

body[data-lang="en"] {
    font-family: var(--sans-en);
}

body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    content: "";
    pointer-events: none;
    opacity: 0.32;
    background-image:
        linear-gradient(90deg, transparent 49.8%, rgba(23, 27, 24, 0.025) 50%, transparent 50.2%),
        linear-gradient(transparent 49.8%, rgba(23, 27, 24, 0.025) 50%, transparent 50.2%);
    background-size: 72px 72px;
}

a {
    color: inherit;
}

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

button,
input,
select {
    font: inherit;
}

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

:focus-visible {
    outline: 3px solid var(--cinnabar);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    z-index: 1000;
    top: 1rem;
    left: 1rem;
    padding: 0.65rem 1rem;
    color: #fff;
    background: var(--ink);
    transform: translateY(-160%);
}

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

.site-shell {
    width: min(calc(100% - 40px), var(--content));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    z-index: 100;
    top: 0;
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(18px);
}

.site-header__inner {
    display: grid;
    grid-template-columns: minmax(210px, 1fr) auto auto;
    min-height: 84px;
    align-items: center;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
}

.brand__seal {
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    border: 1px solid color-mix(in srgb, var(--cinnabar) 72%, black);
    color: var(--paper-bright);
    background: var(--cinnabar);
    font-family: var(--serif-cn);
    font-size: 1.25rem;
    line-height: 1;
    box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.17);
}

.brand__name {
    display: block;
    font-family: var(--serif-cn);
    font-size: 1.17rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    line-height: 1.2;
}

body[data-lang="en"] .brand__name {
    font-family: var(--serif-en);
    letter-spacing: 0.015em;
}

.brand__sub {
    display: block;
    margin-top: 0.2rem;
    color: var(--ink-soft);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.7rem;
}

.site-nav a {
    position: relative;
    padding: 0.45rem 0;
    color: var(--ink-soft);
    font-size: 0.82rem;
    font-weight: 650;
    letter-spacing: 0.04em;
    text-decoration: none;
}

.site-nav a::after {
    position: absolute;
    right: 0;
    bottom: 0.15rem;
    left: 0;
    height: 2px;
    content: "";
    background: var(--cinnabar);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
    transform: scaleX(1);
}

.language-switch {
    display: inline-flex;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 3px;
}

.language-switch a {
    min-width: 44px;
    border-radius: 999px;
    padding: 0.3rem 0.65rem;
    font-size: 0.73rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
}

.language-switch a[aria-current="true"] {
    color: var(--paper-bright);
    background: var(--ink);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-strong);
    background: transparent;
}

.hero {
    position: relative;
    min-height: 690px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
}

.hero__grid {
    display: grid;
    min-height: 690px;
    grid-template-columns: minmax(0, 1.3fr) minmax(330px, 0.7fr);
    align-items: center;
    gap: 6vw;
}

.hero__copy {
    position: relative;
    z-index: 2;
    padding: 7rem 0 8rem;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0 0 1.5rem;
    color: var(--cinnabar-dark);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.eyebrow::before {
    width: 36px;
    height: 1px;
    content: "";
    background: currentColor;
}

.hero h1 {
    max-width: 840px;
    margin: 0;
    font-family: var(--serif-cn);
    font-size: clamp(3.25rem, 7vw, 7.3rem);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 0.99;
}

body[data-lang="en"] .hero h1 {
    font-family: var(--serif-en);
    font-size: clamp(3.2rem, 6.4vw, 6.7rem);
    letter-spacing: -0.05em;
}

.hero__lead {
    max-width: 670px;
    margin: 2rem 0 2.4rem;
    color: var(--ink-soft);
    font-family: var(--serif-cn);
    font-size: clamp(1.08rem, 1.8vw, 1.34rem);
    line-height: 1.8;
}

body[data-lang="en"] .hero__lead {
    font-family: var(--serif-en);
    line-height: 1.55;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.button {
    display: inline-flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    border: 1px solid var(--ink);
    padding: 0.65rem 1.2rem;
    font-size: 0.82rem;
    font-weight: 750;
    letter-spacing: 0.04em;
    text-decoration: none;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
    transform: translateY(-3px);
    box-shadow: 5px 5px 0 rgba(23, 27, 24, 0.14);
}

.button--primary {
    color: var(--paper-bright);
    background: var(--ink);
}

.button--ghost {
    background: rgba(251, 248, 239, 0.45);
}

.hero__cosmos {
    position: relative;
    min-height: 520px;
}

.cosmos-ring {
    position: absolute;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    inset: 3% -12% 3% 6%;
    animation: slow-spin 34s linear infinite;
}

.cosmos-ring::before,
.cosmos-ring::after {
    position: absolute;
    border: 1px solid var(--line);
    border-radius: inherit;
    content: "";
    inset: 13%;
}

.cosmos-ring::after {
    inset: 31%;
    background: radial-gradient(circle, rgba(182, 58, 43, 0.16), transparent 66%);
}

.cosmos-axis {
    position: absolute;
    top: 5%;
    bottom: 5%;
    left: 50%;
    width: 1px;
    background: linear-gradient(transparent, var(--cinnabar), var(--jade), transparent);
    transform: rotate(18deg);
}

.cosmos-label {
    position: absolute;
    display: grid;
    width: 82px;
    height: 82px;
    place-items: center;
    border: 1px solid var(--line-strong);
    background: color-mix(in srgb, var(--paper-bright) 84%, transparent);
    font-family: var(--serif-cn);
    font-size: 1.5rem;
    box-shadow: var(--shadow);
}

.cosmos-label--one {
    top: 15%;
    left: 1%;
}

.cosmos-label--two {
    top: 47%;
    right: 1%;
    color: var(--paper-bright);
    background: var(--jade);
}

.cosmos-label--three {
    bottom: 8%;
    left: 18%;
    color: var(--paper-bright);
    background: var(--cinnabar);
}

.section {
    padding: 7rem 0;
    border-bottom: 1px solid var(--line);
}

.section--ink {
    color: var(--paper-bright);
    background:
        radial-gradient(circle at 85% 0%, rgba(182, 58, 43, 0.24), transparent 28rem),
        #19201d;
}

.section-heading {
    display: grid;
    margin-bottom: 3.5rem;
    grid-template-columns: minmax(0, 0.7fr) minmax(300px, 1.3fr);
    gap: 4rem;
    align-items: end;
}

.section-heading h2 {
    margin: 0;
    font-family: var(--serif-cn);
    font-size: clamp(2.2rem, 4.2vw, 4.8rem);
    line-height: 1.08;
}

body[data-lang="en"] .section-heading h2 {
    font-family: var(--serif-en);
}

.section-heading p {
    max-width: 680px;
    margin: 0;
    color: var(--ink-soft);
}

.section--ink .section-heading p {
    color: rgba(251, 248, 239, 0.68);
}

.entry-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}

.entry-card {
    position: relative;
    display: flex;
    min-height: 360px;
    flex-direction: column;
    grid-column: span 4;
    overflow: hidden;
    border: 1px solid var(--line);
    padding: 1.4rem;
    background: color-mix(in srgb, var(--paper-bright) 78%, transparent);
    text-decoration: none;
    transition: transform 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.entry-card:nth-child(5n + 1) {
    grid-column: span 5;
}

.entry-card:nth-child(5n + 2) {
    grid-column: span 7;
}

.entry-card:hover {
    z-index: 2;
    background: var(--paper-bright);
    box-shadow: var(--shadow);
    transform: translateY(-7px);
}

.entry-card__number {
    color: var(--cinnabar);
    font-family: var(--serif-en);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
}

.entry-card h3 {
    margin: auto 0 0.75rem;
    font-family: var(--serif-cn);
    font-size: clamp(2rem, 3.2vw, 3.8rem);
    line-height: 1;
}

body[data-lang="en"] .entry-card h3 {
    font-family: var(--serif-en);
}

.entry-card p {
    margin: 0 0 1rem;
    color: var(--ink-soft);
    font-size: 0.88rem;
    line-height: 1.65;
}

.entry-card__time {
    padding-top: 0.8rem;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: 0.72rem;
}

.source-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.source-badge {
    display: inline-flex;
    min-height: 28px;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid currentColor;
    padding: 0.1rem 0.5rem;
    color: var(--jade);
    font-size: 0.68rem;
    font-weight: 750;
    line-height: 1.2;
}

.source-badge__short {
    color: var(--cinnabar);
    font-family: var(--serif-cn);
    font-size: 0.83rem;
}

.source-system {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    border-top: 1px solid rgba(251, 248, 239, 0.25);
    border-left: 1px solid rgba(251, 248, 239, 0.25);
}

.source-system__item {
    min-height: 215px;
    border-right: 1px solid rgba(251, 248, 239, 0.25);
    border-bottom: 1px solid rgba(251, 248, 239, 0.25);
    padding: 1.3rem;
}

.source-system__mark {
    display: block;
    margin-bottom: 3rem;
    color: #e66a55;
    font-family: var(--serif-cn);
    font-size: 2.6rem;
    line-height: 1;
}

.source-system__item strong {
    display: block;
    margin-bottom: 0.55rem;
    font-family: var(--serif-cn);
    font-size: 1rem;
}

.source-system__item p {
    margin: 0;
    color: rgba(251, 248, 239, 0.62);
    font-size: 0.74rem;
    line-height: 1.55;
}

.dual-time {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border: 1px solid var(--line-strong);
    background: rgba(251, 248, 239, 0.42);
}

.dual-time__lane {
    position: relative;
    min-height: 330px;
    padding: 2rem;
}

.dual-time__lane + .dual-time__lane {
    border-left: 1px solid var(--line-strong);
}

.dual-time__lane h3 {
    margin: 0 0 1.8rem;
    color: var(--cinnabar-dark);
    font-size: 0.76rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.dual-time__track {
    position: relative;
    display: flex;
    min-height: 170px;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.dual-time__track::before {
    position: absolute;
    right: 0;
    left: 0;
    height: 1px;
    content: "";
    background: var(--line-strong);
}

.dual-time__point {
    position: relative;
    z-index: 1;
    width: 30%;
    padding-top: 2.5rem;
    font-size: 0.76rem;
    line-height: 1.5;
}

.dual-time__point::before {
    position: absolute;
    top: 0.8rem;
    left: 0;
    width: 12px;
    height: 12px;
    border: 3px solid var(--paper);
    border-radius: 50%;
    content: "";
    background: var(--cinnabar);
    box-shadow: 0 0 0 1px var(--cinnabar);
}

.dual-time__lane--evidence .dual-time__point::before {
    background: var(--jade);
    box-shadow: 0 0 0 1px var(--jade);
}

.page-hero {
    padding: 6.5rem 0 4rem;
    border-bottom: 1px solid var(--line);
}

.page-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
    gap: 5rem;
    align-items: end;
}

.page-hero h1 {
    margin: 0;
    font-family: var(--serif-cn);
    font-size: clamp(3.2rem, 7vw, 7rem);
    line-height: 0.96;
}

body[data-lang="en"] .page-hero h1 {
    font-family: var(--serif-en);
}

.page-hero__intro {
    max-width: 700px;
    margin: 0;
    color: var(--ink-soft);
    font-family: var(--serif-cn);
    font-size: 1.15rem;
}

body[data-lang="en"] .page-hero__intro {
    font-family: var(--serif-en);
}

.filter-bar {
    position: sticky;
    z-index: 40;
    top: 84px;
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    border-bottom: 1px solid var(--line);
    padding: 1rem 0;
    background: color-mix(in srgb, var(--paper) 91%, transparent);
    backdrop-filter: blur(15px);
}

.filter-bar input,
.filter-bar select {
    min-height: 44px;
    border: 1px solid var(--line-strong);
    border-radius: 0;
    padding: 0.45rem 0.75rem;
    color: var(--ink);
    background: var(--paper-bright);
}

.filter-bar input {
    min-width: min(320px, 100%);
    flex: 1;
}

.result-count {
    display: flex;
    align-items: center;
    margin-left: auto;
    color: var(--ink-soft);
    font-size: 0.75rem;
}

.timeline-list {
    position: relative;
    padding: 4rem 0 7rem;
}

.timeline-list::before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 176px;
    width: 1px;
    content: "";
    background: linear-gradient(var(--cinnabar), var(--jade), var(--line));
}

.timeline-item {
    display: grid;
    min-height: 210px;
    grid-template-columns: 150px 1fr;
    gap: 54px;
    padding: 1.5rem 0;
}

.timeline-item[hidden] {
    display: none;
}

.timeline-item__era {
    position: relative;
    padding-top: 1rem;
    color: var(--ink-soft);
    font-size: 0.75rem;
    text-align: right;
}

.timeline-item__era::after {
    position: absolute;
    top: 1.35rem;
    right: -32px;
    width: 11px;
    height: 11px;
    border: 3px solid var(--paper);
    border-radius: 50%;
    content: "";
    background: var(--cinnabar);
    box-shadow: 0 0 0 1px var(--cinnabar);
}

.timeline-item__card {
    display: grid;
    grid-template-columns: minmax(170px, 0.45fr) minmax(280px, 1fr);
    gap: 2rem;
    border: 1px solid var(--line);
    padding: 1.5rem;
    background: rgba(251, 248, 239, 0.5);
    text-decoration: none;
    transition: background 180ms ease, transform 180ms ease;
}

.timeline-item__card:hover {
    background: var(--paper-bright);
    transform: translateX(6px);
}

.timeline-item h2 {
    margin: 0;
    font-family: var(--serif-cn);
    font-size: 2rem;
}

body[data-lang="en"] .timeline-item h2 {
    font-family: var(--serif-en);
}

.timeline-item__facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.micro-fact {
    border-left: 2px solid var(--line-strong);
    padding-left: 0.75rem;
}

.micro-fact span {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--ink-soft);
    font-size: 0.64rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.micro-fact strong {
    display: block;
    font-size: 0.78rem;
    line-height: 1.5;
}

.entry-hero {
    position: relative;
    padding: 5rem 0 3rem;
    border-bottom: 1px solid var(--line);
}

.breadcrumbs {
    margin-bottom: 2.4rem;
    color: var(--ink-soft);
    font-size: 0.72rem;
}

.breadcrumbs a {
    text-decoration: none;
}

.entry-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
    gap: 5rem;
}

.entry-hero h1 {
    margin: 0 0 1rem;
    font-family: var(--serif-cn);
    font-size: clamp(4.2rem, 10vw, 10rem);
    letter-spacing: -0.055em;
    line-height: 0.85;
}

body[data-lang="en"] .entry-hero h1 {
    font-family: var(--serif-en);
    font-size: clamp(4rem, 8vw, 8rem);
}

.entry-hero__romanization {
    color: var(--cinnabar-dark);
    font-family: var(--serif-en);
    font-size: 1.1rem;
    letter-spacing: 0.06em;
}

.entry-hero__excerpt {
    max-width: 760px;
    margin: 2rem 0;
    color: var(--ink-soft);
    font-family: var(--serif-cn);
    font-size: 1.2rem;
}

body[data-lang="en"] .entry-hero__excerpt {
    font-family: var(--serif-en);
}

.entry-identity {
    align-self: end;
    border-top: 4px solid var(--cinnabar);
    padding: 1.3rem;
    background: var(--ink);
    color: var(--paper-bright);
}

.entry-identity dl {
    margin: 0;
}

.entry-identity div {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 1rem;
    border-bottom: 1px solid rgba(251, 248, 239, 0.16);
    padding: 0.72rem 0;
}

.entry-identity dt {
    color: rgba(251, 248, 239, 0.58);
    font-size: 0.67rem;
    letter-spacing: 0.05em;
}

.entry-identity dd {
    margin: 0;
    font-size: 0.78rem;
}

.entry-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: 6rem;
    padding: 5rem 0 8rem;
}

.entry-sidebar {
    align-self: start;
}

.entry-sidebar__sticky {
    position: sticky;
    top: 118px;
}

.entry-toc {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: toc;
}

.entry-toc a {
    display: grid;
    grid-template-columns: 2rem 1fr;
    border-bottom: 1px solid var(--line);
    padding: 0.65rem 0;
    color: var(--ink-soft);
    font-size: 0.78rem;
    text-decoration: none;
}

.entry-toc a::before {
    color: var(--cinnabar);
    content: counter(toc, decimal-leading-zero);
    counter-increment: toc;
    font-family: var(--serif-en);
}

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

.entry-content > p:first-child {
    margin-top: 0;
    font-family: var(--serif-cn);
    font-size: 1.25rem;
}

body[data-lang="en"] .entry-content > p:first-child {
    font-family: var(--serif-en);
}

.entry-section {
    scroll-margin-top: 118px;
    margin-top: 4.5rem;
}

.entry-section h2 {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin: 0 0 1.4rem;
    font-family: var(--serif-cn);
    font-size: 2.1rem;
}

body[data-lang="en"] .entry-section h2 {
    font-family: var(--serif-en);
}

.entry-section h2 span {
    color: var(--cinnabar);
    font-family: var(--serif-en);
    font-size: 0.72rem;
}

.entry-section p,
.entry-section li {
    color: #303630;
}

.entry-section li + li {
    margin-top: 0.55rem;
}

.time-triad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 2.2rem;
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
}

.time-triad__item {
    min-height: 165px;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    padding: 1.1rem;
}

.time-triad__item span {
    display: block;
    margin-bottom: 1.8rem;
    color: var(--cinnabar-dark);
    font-size: 0.67rem;
    font-weight: 750;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.time-triad__item strong {
    display: block;
    font-family: var(--serif-cn);
    font-size: 1rem;
    line-height: 1.55;
}

.evidence-callout {
    margin: 2rem 0;
    border-left: 5px solid var(--jade);
    padding: 1.4rem 1.5rem;
    background: var(--jade-pale);
}

.evidence-callout span {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--jade);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.site-footer {
    color: rgba(251, 248, 239, 0.78);
    background: #121613;
}

.site-footer__top {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 5rem;
    padding: 5rem 0;
}

.site-footer h2 {
    max-width: 760px;
    margin: 0;
    color: var(--paper-bright);
    font-family: var(--serif-cn);
    font-size: clamp(2.5rem, 5vw, 5.2rem);
    line-height: 1.05;
}

body[data-lang="en"] .site-footer h2 {
    font-family: var(--serif-en);
}

.site-footer__links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.site-footer__links a {
    display: block;
    border-bottom: 1px solid rgba(251, 248, 239, 0.2);
    padding: 0.65rem 0;
    text-decoration: none;
}

.site-footer__bottom {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    border-top: 1px solid rgba(251, 248, 239, 0.14);
    padding: 1.2rem 0;
    color: rgba(251, 248, 239, 0.5);
    font-size: 0.68rem;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 650ms ease, transform 650ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

.empty-state {
    border: 1px dashed var(--line-strong);
    padding: 3rem;
    color: var(--ink-soft);
    text-align: center;
}

@keyframes slow-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 1060px) {
    .site-header__inner {
        grid-template-columns: 1fr auto auto;
    }

    .site-nav {
        position: fixed;
        top: 84px;
        right: 0;
        left: 0;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--line-strong);
        padding: 1rem 20px 1.5rem;
        background: var(--paper-bright);
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav a {
        border-bottom: 1px solid var(--line);
        padding: 0.85rem 0;
    }

    .menu-toggle {
        display: grid;
        place-items: center;
    }

    .hero__grid {
        grid-template-columns: 1fr 0.55fr;
    }

    .source-system {
        grid-template-columns: repeat(3, 1fr);
    }

    .entry-card {
        grid-column: span 6;
    }

    .entry-card:nth-child(5n + 1),
    .entry-card:nth-child(5n + 2) {
        grid-column: span 6;
    }

    .entry-hero__grid,
    .entry-layout {
        gap: 3rem;
    }

    .entry-layout {
        grid-template-columns: minmax(230px, 0.55fr) minmax(0, 1.45fr);
    }
}

@media (max-width: 760px) {
    body {
        font-size: 16px;
    }

    .site-shell {
        width: min(calc(100% - 28px), var(--content));
    }

    .site-header__inner {
        min-height: 72px;
        gap: 0.6rem;
    }

    .site-nav {
        top: 72px;
    }

    .brand__seal {
        width: 38px;
        height: 38px;
    }

    .brand__sub {
        display: none;
    }

    .language-switch a {
        min-width: 38px;
        padding-inline: 0.45rem;
    }

    .hero,
    .hero__grid {
        min-height: auto;
    }

    .hero__grid {
        display: block;
    }

    .hero__copy {
        padding: 5rem 0 2rem;
    }

    .hero h1 {
        font-size: clamp(3.2rem, 17vw, 5.5rem);
    }

    .hero__cosmos {
        min-height: 360px;
        margin: 0 -4rem;
    }

    .section {
        padding: 5rem 0;
    }

    .section-heading,
    .page-hero__grid,
    .site-footer__top {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .entry-grid {
        display: block;
    }

    .entry-card {
        min-height: 290px;
        margin-bottom: 1rem;
    }

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

    .dual-time {
        grid-template-columns: 1fr;
    }

    .dual-time__lane + .dual-time__lane {
        border-top: 1px solid var(--line-strong);
        border-left: 0;
    }

    .page-hero {
        padding-top: 4rem;
    }

    .filter-bar {
        top: 72px;
    }

    .filter-bar input,
    .filter-bar select {
        width: 100%;
    }

    .result-count {
        width: 100%;
        margin-left: 0;
    }

    .timeline-list::before {
        left: 7px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding-left: 28px;
    }

    .timeline-item__era {
        text-align: left;
    }

    .timeline-item__era::after {
        top: 1.25rem;
        right: auto;
        left: -27px;
    }

    .timeline-item__card {
        grid-template-columns: 1fr;
    }

    .timeline-item__facts,
    .time-triad {
        grid-template-columns: 1fr;
    }

    .entry-hero__grid,
    .entry-layout {
        grid-template-columns: 1fr;
    }

    .entry-hero h1 {
        font-size: clamp(4rem, 25vw, 7rem);
    }

    body[data-lang="en"] .entry-hero h1 {
        font-size: clamp(3.5rem, 18vw, 6rem);
    }

    .entry-sidebar {
        display: none;
    }

    .site-footer__links {
        grid-template-columns: 1fr;
    }

    .site-footer__bottom {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}