/* ===== Fonts ===== */
@font-face {
    font-family: 'Climate Crisis';
    src: url('./texts/Climate_Crisis/ClimateCrisis-Regular-VariableFont_YEAR.ttf') format('truetype');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Google Sans Flex';
    src: url('./texts/Google_Sans_Flex/static/GoogleSansFlex_24pt-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Google Sans Flex';
    src: url('./texts/Google_Sans_Flex/static/GoogleSansFlex_24pt-Medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Google Sans Flex';
    src: url('./texts/Google_Sans_Flex/static/GoogleSansFlex_24pt-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Google Sans Flex';
    src: url('./texts/Google_Sans_Flex/static/GoogleSansFlex_24pt-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Cantata One';
    src: url('./texts/Cantata_One/CantataOne-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('./texts/Montserrat/Montserrat-VariableFont_wght.ttf') format('truetype');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('./texts/Montserrat/Montserrat-Italic-VariableFont_wght.ttf') format('truetype');
    font-weight: 100 900;
    font-style: italic;
    font-display: swap;
}

/* ===== CSS Reset & Variables ===== */
:root {
    --color-bg: #000000;
    --color-bg-second: #ffffff;
    --color-text: #ffffff;
    --color-text-secondary: #888888;
    --color-oval: #d4d4d4;
    /* Montserrat: 首页 IN BETWEEN、Let's create...、I design...、Make things、旋转词 */
    --font-display: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    /* Google Sans Flex: 导航按钮、第二页介绍等所有其他文字 */
    --font-body: 'Google Sans Flex', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-y: scroll;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

body.no-scroll {
    overflow: hidden;
}

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

/* ===== Intro Scene ===== */
.intro-scene {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 9999;
    background: var(--color-bg);
    overflow: hidden;
}

.intro-scene.completed {
    display: none !important;
}

/* 3D Scene Container（仅文案层，背景已移出） */
.scene-3d {
    position: absolute;
    inset: 0;
    z-index: 5;
    perspective: 1200px;
    perspective-origin: 50% 50%;
}

/* Background Layer：ShaderGradient waterPlane（src/ShaderBackground.jsx） */
.bg-layer {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: #050208;
}

.shader-gradient-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: none;
}

/* Content Layer - IN BETWEEN 居中全宽，底部 tagline 与 Make things 两侧 */
.content-layer {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 10vh 6vw 10vh 6vw;
    pointer-events: none;
}

.intro-headline {
    font-family: var(--font-display);
    font-size: 12vw;
    font-weight: 700;
    line-height: 90%;
    margin: 0;
    color: var(--color-text);
    text-align: center;
    letter-spacing: 0.08em;
    white-space: nowrap;
    transform: translateX(-0.08em); /* 左移补偿 letter-spacing 造成的视觉偏右 */
}

.intro-bottom-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: end;
    gap: 2rem;
    z-index: 5;
    margin-bottom: 4vh;
    min-width: 0;
}

.intro-text-left {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 52em;
    transform: translateY(-4.2vh);
    min-width: 0;
}

.intro-cta {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
    color: var(--color-text);
    white-space: nowrap;
}

.intro-divider {
    width: 2.5em;
    height: 2px;
    background-color: color-mix(in srgb, var(--color-text) 60%, transparent);
}

.intro-text-right {
    justify-self: end;
    text-align: right;
    z-index: 5;
    white-space: nowrap;
    min-width: 0;
}

.intro-make-things {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 4.5vw, 4rem);
    font-weight: 600;
    margin: 0 0 6px 0;
    line-height: 1.05;
    color: var(--color-text);
    white-space: nowrap;
}

.intro-sub-text {
    font-family: var(--font-display);
    font-size: clamp(3.2rem, 9vw, 8rem);
    font-weight: 600;
    margin: 0;
    line-height: 1.05;
    color: var(--color-text);
    text-transform: capitalize;
    white-space: nowrap;
}

.intro-tagline {
    margin: 0;
    padding-bottom: 0;
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3.2vw, 1.95rem);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

/* Rotating text（参考 https://www.reactbits.dev/text-animations/rotating-text） */
.rotating-text-wrap {
    display: inline-block;
}

.rotating-text-words {
    display: inline-block;
    position: relative;
    height: 1.35em;
    min-width: 9em;
    overflow: hidden;
    vertical-align: bottom;
}

.rotating-word {
    position: absolute;
    left: 0;
    top: 0;
    white-space: nowrap;
    width: 100%;
    text-transform: capitalize;
    transform: translateY(100%);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.rotating-word.current {
    transform: translateY(0);
    opacity: 1;
}

.rotating-word.leave-up {
    transform: translateY(-100%);
    opacity: 0;
}

.rotating-word.enter-from-below {
    transform: translateY(100%);
    opacity: 0;
}

/* Portal 层：在 intro-scene 内、scene-3d 外，纯 2D 缩放无透视，避免穿模 */
.portal-layer {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    will-change: transform;
}

/* 球体直径 = 页面高度的 105%（约为原 70% 的 1.5 倍） */
.portal-container {
    position: relative;
    width: 105vh;
    height: 105vh;
}

/* 第二页草坪动态背景 (js/grass-bg.js 注入到 .cover-bg)，第二页不可见时自动暂停绘制 */
.grass-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: auto;
}

/* ===== Sun Portal 发光球体：通道，辉度由滚动驱动，速度固定 3.0x ===== */
.sun-portal {
    --portal-intensity: 1;
    --portal-speed: 3.333s; /* 10/3 ≈ 3.0x speed */
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.sun-portal-layer {
    position: absolute;
    margin: auto;
    mix-blend-mode: plus-lighter;
}

@keyframes sun-morph-1 {
    0%, 100% { border-radius: 73% 27% 24% 76% / 66% 26% 74% 34%; transform: rotate(0deg) scale(0.95); }
    50% { border-radius: 28% 72% 64% 36% / 38% 71% 29% 62%; transform: rotate(180deg) scale(1.15); }
}

@keyframes sun-morph-2 {
    0%, 100% { border-radius: 35% 65% 69% 31% / 39% 51% 49% 61%; transform: rotate(0deg) scale(1.1); }
    50% { border-radius: 76% 24% 28% 72% / 70% 31% 69% 30%; transform: rotate(-140deg) scale(0.9); }
}

@keyframes sun-pulse-core {
    0%, 100% { filter: brightness(1) blur(30px); transform: scale(0.9); }
    50% { filter: brightness(1.2) blur(40px); transform: scale(1.1); }
}

.sun-portal-atmosphere {
    width: 87.5%;
    height: 87.5%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(253, 224, 71, calc(0.15 * var(--portal-intensity))), transparent 70%);
    transform: scale(1.1);
}

.sun-portal-ring {
    width: 62.5%;
    height: 62.5%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(253, 224, 71, 0.2) 20%, rgba(234, 88, 12, 0.1) 80%);
    animation: sun-morph-2 calc(var(--portal-speed) * 1.5) ease-in-out infinite alternate;
    filter: blur(40px);
    box-shadow: 0 0 80px 40px rgba(253, 224, 71, calc(0.15 * var(--portal-intensity)));
    opacity: calc(0.8 * var(--portal-intensity));
}

.sun-portal-body {
    width: 50%;
    height: 47.5%;
    border-radius: 50%;
    background-color: rgba(254, 240, 138, 0.5);
    animation: sun-morph-1 var(--portal-speed) ease-in-out infinite;
    filter: blur(24px);
    box-shadow: 0 0 80px 40px rgba(250, 204, 21, calc(0.3 * var(--portal-intensity)));
    opacity: calc(0.9 * var(--portal-intensity));
}

.sun-portal-core {
    width: 35%;
    height: 32.5%;
    border-radius: 50%;
    background: white;
    animation: sun-pulse-core calc(var(--portal-speed) * 0.8) ease-in-out infinite;
    filter: blur(20px);
    box-shadow:
        0 0 60px 30px rgba(255, 255, 255, calc(0.7 * var(--portal-intensity))),
        0 0 120px 60px rgba(253, 224, 71, calc(0.5 * var(--portal-intensity))),
        inset 0 0 40px 20px rgba(255, 255, 255, 1);
    opacity: 1;
}

.sun-portal-hotspot {
    width: 25%;
    height: 22.5%;
    border-radius: 45% 55% 40% 60%;
    background: white;
    animation: sun-morph-2 calc(var(--portal-speed) * 0.5) linear infinite;
    mix-blend-mode: normal;
    filter: blur(16px);
    box-shadow: 0 0 50px 20px rgba(255, 255, 255, 0.9);
    opacity: 1;
}

/* Yehua Ou: separate layer, fixed in viewport – moves up and shrinks with scroll */
.name-layer {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 15;
    pointer-events: none;
    will-change: transform;
}

.oval-name {
    font-family: 'Climate Crisis', Georgia, serif;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--color-text);
    font-weight: 600;
    white-space: nowrap;
}

/* Navigation on Intro */
.nav-intro {
    position: absolute;
    top: 30px;
    left: 40px;
    right: 40px;
    display: flex;
    justify-content: space-between;
    z-index: 100;
}

.nav-left {
    display: flex;
    gap: 30px;
}

.nav-link-intro {
    position: relative;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    text-transform: uppercase;
    transition: opacity 0.3s ease;
}

.nav-link-intro::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background-color: color-mix(in srgb, #fff 40%, transparent);
    transition: background-color 0.15s ease;
}

.nav-link-intro:hover {
    opacity: 0.9;
}

.nav-link-intro:hover::after {
    background-color: currentColor;
}

/* Scroll Down on Intro */
.scroll-down-intro {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 100;
}

.scroll-text {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text);
}

.scroll-arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.scroll-arrows svg {
    width: 28px;
    height: 28px;
    color: var(--color-text);
    margin-top: -10px;
}

.scroll-arrows svg:first-child {
    margin-top: 0;
    animation: bounceArrow 1.5s ease-in-out infinite;
}

.scroll-arrows svg:last-child {
    animation: bounceArrow 1.5s ease-in-out infinite 0.2s;
}

@keyframes bounceArrow {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(5px); opacity: 0.5; }
}

/* Progress Bar */
.scroll-progress {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    overflow: hidden;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.scroll-progress.visible {
    opacity: 1;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--color-text);
    border-radius: 2px;
    transition: width 0.1s ease-out;
}

/* ===== Main Content ===== */
.main-content {
    opacity: 0;
    visibility: hidden;
    min-height: 100vh;
}

.main-content.visible {
    opacity: 1;
    visibility: visible;
    background: var(--color-bg-second);
}

/* 过渡遮罩：覆盖 intro 和 main，实现第一页淡出→第二页淡入 */
.transition-light-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999; /* 高于 intro-scene(9999)，覆盖整页 */
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    background: radial-gradient(
        ellipse 120% 120% at 50% 50%,
        rgba(255, 255, 255, 0.99) 0%,
        rgba(255, 252, 240, 0.95) 30%,
        rgba(255, 250, 220, 0.7) 60%,
        rgba(255, 255, 255, 0.4) 100%
    );
    /* 默认无 transition，visible 时瞬间显示；fade-out 时才启用渐隐 */
    transition: none;
}

/* 显示遮罩（用于第一页淡出） */
.transition-light-overlay.fade-in {
    visibility: visible;
    opacity: 1;
    transition: opacity 0.6s ease-out;
}

/* 遮罩渐隐，露出第二页 */
.transition-light-overlay.fade-out {
    visibility: visible;
    opacity: 0;
    transition: opacity 0.9s ease-in;
}

/* 过渡完全结束后遮罩彻底移出层叠与交互，避免挡住下方内容 */
.transition-light-overlay.overlay-hidden {
    visibility: hidden;
    z-index: -1;
    pointer-events: none;
}

/* 过渡期间隐藏按钮横线，避免突兀 */
body.is-transitioning .nav-link-intro::after,
body.is-transitioning .nav-link-main::after {
    opacity: 0;
}

/* Second page nav (Yehua Ou in center, same row as Games/About) */
.nav-main {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 30px 40px;
    z-index: 1000;
    background: transparent;
}

.nav-main-left {
    display: flex;
    gap: 30px;
}

.nav-main-right {
    display: flex;
}

.nav-link-main {
    position: relative;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    text-transform: uppercase;
    transition: opacity 0.3s ease;
}

.nav-link-main::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background-color: color-mix(in srgb, currentColor 40%, transparent);
    transition: background-color 0.15s ease;
}

.nav-link-main:hover {
    opacity: 0.9;
}

.nav-link-main:hover::after {
    background-color: currentColor;
}

.main-content .nav-link-main {
    color: #111;
}

/* 确保第二页按钮横线使用文字色 40% 透明度 */
.main-content .nav-link-main::after {
    background-color: color-mix(in srgb, #111 40%, transparent);
}

.main-content .nav-link-main:hover::after {
    background-color: #111;
}

.main-content .nav-main-center,
.main-content .nav-main-name {
    color: #111;
}

/* ===== 二级分页 (Games / UI/UX / Digital Art / About) ===== */
body.subpage {
    background: var(--color-bg-second);
    color: #111;
}

/* 与首页 IN BETWEEN 同字体与格式，标题在页面上方（仅 Games / UI/UX / Digital Art） */
.subpage-title-banner {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 8vh 6vw 10vh 6vw;
    box-sizing: border-box;
}

.subpage-title-banner-with-gallery {
    min-height: 0;
    padding-bottom: 4vh;
}

.subpage-headline {
    font-family: var(--font-display);
    font-size: 12vw;
    font-weight: 700;
    line-height: 90%;
    margin: 0;
    color: #111;
    text-align: center;
    letter-spacing: 0.08em;
    white-space: nowrap;
    width: 100%;
    box-sizing: border-box;
}

.subpage-headline.subpage-headline-twoline {
    white-space: normal;
}

.nav-main-subpage .nav-link-main {
    color: #111;
}

.nav-main-subpage .nav-link-main::after {
    background-color: color-mix(in srgb, #111 40%, transparent);
}

.nav-main-subpage .nav-link-main:hover::after {
    background-color: #111;
}

.nav-main-name-link {
    font-family: 'Climate Crisis', Georgia, serif;
    font-size: 1.75rem;
    font-weight: 600;
    color: #111;
    text-decoration: none;
    text-transform: uppercase;
}

.nav-main-name-link:hover {
    color: #111;
    opacity: 1;
}

.nav-link-current {
    cursor: default;
    opacity: 0.7;
}

.nav-link-current::after {
    display: none;
}

.subpage-content {
    padding-top: 100px;
    padding-bottom: 4rem;
    padding-left: 40px;
    padding-right: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.subpage-hero {
    margin-bottom: 3rem;
}

.subpage-title {
    font-family: var(--font-body);
    font-size: 2.5rem;
    font-weight: 600;
    color: #111;
    margin-bottom: 0.75rem;
}

.subpage-lead {
    font-size: 1.1rem;
    color: rgba(0, 0, 0, 0.5);
    line-height: 1.6;
}

.subpage-list {
    min-height: 40vh;
}

/* Digital Art：标题紧贴内容、几乎满屏、页边距很小 */
/* 与 Games/UI/UX 一致：main 仅顶部留白，网格区自己 80px 左右边距，above-footer + footer 通栏 */
.digital-art-content {
    padding-top: 4vh;
    padding-bottom: 0;
    padding-left: 0;
    padding-right: 0;
    max-width: none;
}

.digital-art-content .subpage-list {
    min-height: 0;
    padding-left: 80px;
    padding-right: 80px;
}

.digital-art-grid {
    display: flex;
    flex-direction: column;
    gap: 4rem;
    width: 100%;
    margin: 0;
    padding: 0;
}

.digital-art-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}

.digital-art-row.in-view {
    opacity: 1;
    transform: translateY(0);
}

.digital-art-row.digital-art-row-instant {
    transition: none;
}

.digital-art-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.digital-art-item-link {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    text-decoration: none;
    color: inherit;
}

.digital-art-preview {
    width: 100%;
    aspect-ratio: 1;
    background: #b0b0b0;
    background-size: cover;
    background-position: center;
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}
.digital-art-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.digital-art-preview-fallback {
    position: absolute;
    inset: 0;
}

.digital-art-title {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #111;
    margin: 4px 0 2px;
}

.digital-art-desc {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    color: rgba(0, 0, 0, 0.5);
    line-height: 1.35;
    margin: 0;
}

@media (max-width: 768px) {
    .digital-art-grid {
        gap: 1.75rem;
    }
    .digital-art-row {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
}

.subpage-about .about-text {
    font-size: 1.1rem;
    color: #333;
    line-height: 1.8;
}

/* 第二页画廊卡片：可点击，暂无跳转 */
.gallery-card-link {
    cursor: pointer;
}

.nav-main-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 300;
    color: var(--color-text);
    text-transform: uppercase;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem 1rem;
    transition: opacity 0.3s ease;
}

.nav-main-center:focus {
    outline: none;
}

.nav-main-name {
    font-family: 'Climate Crisis', Georgia, serif;
    font-weight: 600;
}

/* Cover Section：100vh，草地固定；滚轮先驱动内部进度显示文字并上移到居中，进度到 1 后才允许页面真正滚动 */
.cover-section {
    width: 100%;
    height: 100vh;
    background: var(--color-bg-second);
    position: relative;
}

.cover-bg {
    position: absolute;
    inset: 0;
    background: #ffffff;
}

/* 文字容器：覆盖在草地上方，由 JS 用内部进度驱动位移动画，不依赖页面 scrollY */
.cover-motion-wrap {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.cover-motion-text {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    color: #0f2e16;
    text-align: center;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25em;
}

.motion-line {
    display: block;
    text-align: center;
}

.motion-line .motion-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.45s ease, transform 0.45s ease;
    transition-delay: calc(var(--word-i, 0) * 0.06s);
}

.motion-line.revealed .motion-word {
    opacity: 1;
    transform: translateY(0);
}

/* ===== About Section ===== */
.about-section {
    padding: 120px 40px 0 40px;
    margin-bottom: 0;
    background: var(--color-bg-second);
}

.about-content {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.about-title {
    font-family: var(--font-body);
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.main-content .about-title {
    color: #111;
}

.about-text {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.main-content .about-text {
    color: #333;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* 首页 About 段：与 “About Me” 标题字号、字重一致 */
.main-content #about .about-text {
    font-size: 3rem;
    font-weight: 600;
    line-height: 1.3;
}

/* ===== Projects Parallax Gallery：由 React ParallaxGallery.jsx（replica）渲染，此处仅包一层 ===== */
#galleryRoot {
    margin: 0;
    padding: 0;
    background: var(--color-bg-second);
}
/* 对角 zigzag 条带随页滚动，总高 = 条带 + 80vh，由组件内联设置 */
.parallax-gallery-section {
    min-height: 0;
}
.projects-gallery {
    margin-top: 0;
    padding: 0;
    width: 100%;
    background: var(--color-bg-second);
    overflow: visible;
}
.about-section + .projects-gallery {
    margin-top: 200px;
}

/* ===== 最后一张图下方留白 + 返回顶部 ===== */
.above-footer {
    min-height: 28vh;
    padding: 0 40px;
    background: var(--color-bg-second);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.back-to-top {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: #333;
    background: transparent;
    border: 1px solid rgba(0,0,0,0.15);
    padding: 0.6rem 1.4rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

.back-to-top:hover {
    border-color: #111;
    color: #111;
}

/* ===== Footer ===== */
.footer {
    position: relative;
    z-index: 10;
    padding: 3rem 40px;
    background: var(--color-bg-second);
    border-top: 1px solid #eee;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.footer-email {
    margin: 0.5rem 0 0;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

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

.footer-email a:hover {
    text-decoration: underline;
}

.main-content .copyright {
    color: #333;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .content-layer {
        padding: 8vh 6vw 8vh 6vw;
    }
    
    .intro-headline,
    .subpage-headline {
        font-size: clamp(3.5rem, 13vw, 12rem);
    }
    
    .intro-make-things {
        font-size: clamp(1.1rem, 3vw, 2.25rem);
    }
    
    .intro-sub-text {
        font-size: clamp(2.2rem, 6vw, 4.5rem);
    }
    
    .intro-cta {
        font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    }
    
    .intro-text-left {
        max-width: 42em;
    }
    
    .intro-tagline {
        font-size: clamp(1.1rem, 3vw, 1.65rem);
    }
}

@media (max-width: 768px) {
    .content-layer {
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 12vh 6vw;
    }
    
    .intro-headline {
        font-size: clamp(2.8rem, 11vw, 9rem);
    }
    
    .intro-bottom-row {
        grid-template-columns: 1fr;
        align-items: center;
        justify-items: center;
        margin-bottom: 0;
    }
    
    .intro-text-left {
        align-items: center;
        text-align: center;
        max-width: 36em;
    }
    
    .intro-divider {
        margin: 0 auto;
    }
    
    .intro-tagline {
        text-align: center;
        margin-bottom: 0;
    }
    
    .intro-text-right {
        justify-self: center;
        text-align: center;
    }
    
    .intro-make-things {
        font-size: clamp(1.1rem, 3vw, 2.25rem);
    }
    
    .intro-sub-text {
        font-size: clamp(2.2rem, 6vw, 4.5rem);
    }
    
    .portal-layer {
        position: relative;
        order: 2;
        height: auto;
        inset: auto;
    }
    
    .portal-container {
        width: 105vh;
        height: 105vh;
    }
    
    .nav-intro {
        top: 20px;
        left: 20px;
        right: 20px;
    }
    
    .nav-left {
        gap: 15px;
    }
    
    .nav-link-intro {
        font-size: 0.9rem;
    }
    
    .scroll-down-intro {
        bottom: 30px;
    }
    
    .about-section {
        padding: 80px 20px;
    }
}

@media (max-width: 480px) {
    .intro-headline,
    .subpage-headline {
        font-size: clamp(2.2rem, 10vw, 7rem);
        letter-spacing: 0.05em;
    }
    
    .intro-make-things {
        font-size: 1rem;
    }
    
    .intro-sub-text {
        font-size: 2rem;
    }
    
    .intro-cta {
        font-size: clamp(1.3rem, 3vw, 1.9rem);
    }
    
    .intro-tagline {
        font-size: clamp(1rem, 2.8vw, 1.4rem);
    }
    
    .portal-container {
        width: 105vh;
        height: 105vh;
    }
    
    .oval-name {
        font-size: 1.2rem;
    }
    
    .nav-intro {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
}

/* ===== No scrollbar on entire site (scroll still works, bar is hidden) ===== */
html {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

body::-webkit-scrollbar,
html::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

/* ===== 第二页与二级分页：侧边常驻滚动条 ===== */
html:has(.main-content.visible),
html:has(body.subpage) {
    scrollbar-width: thin;
    -ms-overflow-style: auto;
}

html:has(.main-content.visible)::-webkit-scrollbar,
html:has(body.subpage)::-webkit-scrollbar {
    display: block;
    width: 10px;
}

html:has(.main-content.visible)::-webkit-scrollbar-track,
html:has(body.subpage)::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.04);
}

html:has(.main-content.visible)::-webkit-scrollbar-thumb,
html:has(body.subpage)::-webkit-scrollbar-thumb {
    background: #0f2e16;
    border-radius: 5px;
}

html:has(.main-content.visible)::-webkit-scrollbar-thumb:hover,
html:has(body.subpage)::-webkit-scrollbar-thumb:hover {
    background: #0d2612;
}

/* ===== About 页：黑底 + 发光球 + 双段文字，滚动驱动球位移与文字淡入淡出 ===== */
.about-page {
    background: #fff;
}
.about-page .nav-link-main {
    color: #111;
}
.about-page .nav-link-main:hover {
    color: #111;
}
.about-page .nav-main-name-link {
    color: #111;
}
.about-page .nav-main-name-link:hover {
    color: #111;
    opacity: 1;
}
.about-page .nav-link-current {
    color: #111;
}

/* About 页：左文右图 + 底部灰色条（滚动字 + 掉落标签） */
.about-main {
    padding-top: 100px;
    padding-bottom: 0;
}

.about-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(2rem, 6vw, 15rem);
    max-width: 100%;
    margin: 0 auto;
    padding: 3rem clamp(24px, 5vw, 96px) 4rem;
    min-height: auto;
    box-sizing: border-box;
}

@media (max-width: 1200px) {
    .about-hero {
        gap: clamp(1.5rem, 4vw, 4rem);
        padding: 3rem clamp(24px, 4vw, 64px) 3rem;
    }
}

.about-hero-left {
    flex: 1;
    max-width: 50%;
    min-width: 0;
}

.about-hero-intro {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.05rem + 1.35vw, 2.6rem);
    font-weight: 600;
    line-height: 1.45;
    color: #333;
    margin: 0;
    max-width: 100%;
}

.about-hero-right {
    flex: 0 0 auto;
    width: 520px;
    height: 580px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.about-hero-img {
    width: 100%;
    height: 100%;
    background: url('backgroundimg/Me.jpeg') center/cover no-repeat;
    border-radius: 4px;
}

.about-hero-name {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
    margin: 0.75rem 0 0;
    padding: 0;
}

/* 底部灰色条 */
.about-strip {
    background: #e8e8e8;
    padding: 0 0 4rem;
    overflow: hidden;
}

/* 两行横向滚动字：贴灰色区域顶端，两行都完整显示 */
.about-scroll-rows {
    padding: 0.5em 0 1.25em 0;
    margin-bottom: 3rem;
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    overflow: hidden;
    min-height: 1.2em;
}

.about-scroll-row {
    display: flex;
    width: max-content;
    white-space: nowrap;
    animation: about-scroll-run 35s linear infinite;
    line-height: 1.25;
}

.about-scroll-row-2 {
    animation-direction: reverse;
    animation-duration: 40s;
}

.about-scroll-inner {
    padding: 0 2rem;
    font-family: var(--font-body);
    font-size: clamp(2.75rem, 4.5vw, 3.25rem);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #333;
}

@keyframes about-scroll-run {
    0% { transform: translateX(0); }
    100% { transform: translateX(-25%); }
}

/* 掉落标签容器：左右留页边距，标签不超出边界、不嵌进墙 */
.about-falling-wrap {
    position: relative;
    min-height: 400px;
    overflow: visible;
    padding: 0 32px;
    box-sizing: border-box;
}

.about-falling-tags {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: visible;
}

.about-falling-tags.is-ceiling .about-tag {
    transition: none;
}

.about-tag {
    position: absolute;
    padding: 0.75rem 1.4rem;
    font-family: var(--font-body);
    font-size: 1.35rem;
    font-weight: 700;
    border-radius: 999px;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    pointer-events: none;
    will-change: transform;
    border: none;
}

.about-tag.about-tag--dark {
    background: #111;
    color: #fff;
}

.about-tag.about-tag--light {
    background: #fff;
    color: #111;
}

@media (max-width: 900px) {
    .about-hero {
        flex-direction: column;
        text-align: center;
        padding: 2rem 24px 3rem;
    }
    .about-hero-left {
        max-width: 100%;
    }
    .about-hero-right {
        flex: 0 0 auto;
        width: min(520px, 100%);
        height: min(580px, 70vh);
        align-items: center;
    }
    .about-hero-name {
        text-align: center;
    }
}

.about-footer {
    position: relative;
    z-index: 2;
    background: #fff;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}
.about-footer .footer-content,
.about-footer .copyright,
.about-footer .footer-email,
.about-footer .footer-email a {
    color: rgba(0, 0, 0, 0.5);
}

/* ===== Selection ===== */
::selection {
    background: var(--color-text);
    color: var(--color-bg);
}