/* ========== 自定义字体 ========== */
@font-face {
    font-family: 'Millik';
    font-weight: 700;
    src: url(./elliptical-rotation-chart-master/asset/font/Millik.c3f91cb.ttf) format("truetype");
    font-display: swap;
    text-rendering: optimizeLegibility;
}

/* ========== 全局变量与基础样式 ========== */
:root {
    --bg-dark: #0b0b0b;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    --text-primary: #f0f0f0;
    --text-secondary: #b0b0b0;
    --text-muted: #777;
    --accent: #c9a87c;
    --accent-hover: #e0c190;
    --accent-dim: rgba(201, 168, 124, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.15);
    --font-heading: 'Glossy Display Ext Italic', 'FangSong', '仿宋', 'STFangsong', serif;
    --font-body: 'Glossy Display Ext Italic', 'FangSong', '仿宋', 'STFangsong', 'SimSun', '宋体', serif;
    --transition: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
    --radius: 6px;
    --edge-padding: max(10px, 1.5vw);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 500;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* ========== 导航栏 ========== */
.navbar { position: fixed; top: 0; left: 0; width: 100%; background: rgba(11, 11, 11, 0.88); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); z-index: 1000; border-bottom: 1px solid var(--border-subtle); transition: background var(--transition), opacity 0.45s ease, transform 0.45s ease; }
.navbar.hidden { pointer-events: none; }
.navbar.scrolled { background: rgba(11, 11, 11, 0.96); box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5); }
.nav-container { width: 100%; padding: 0 40px; display: flex; justify-content: space-between; align-items: center; height: 75px; }
.logo { font-family: var(--font-heading); font-size: 1.5rem; letter-spacing: 4px; color: var(--text-primary); text-decoration: none; transition: color var(--transition); font-weight: 600; white-space: nowrap; display: flex; align-items: center; gap: 10px; flex-shrink: 1; min-width: 0; overflow: hidden; }
.logo-img { height: 36px; width: auto; flex-shrink: 0; }
.logo-text { display: inline; }
.logo span.dot { color: var(--accent); }
.logo:hover { color: var(--accent); }
.logo:hover span { color: var(--text-primary); }
.nav-links { display: flex; list-style: none; gap: 32px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--text-secondary); font-size: 0.78rem; letter-spacing: 2px; text-transform: uppercase; transition: color var(--transition); position: relative; font-weight: 500; white-space: nowrap; }
.nav-links a:hover { color: var(--text-primary); }
.nav-links a::after { content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 1.5px; background: var(--accent); transition: width var(--transition); }
.nav-links a:hover::after { width: 100%; }
.nav-links .btn-contact { border: 1px solid var(--accent); color: var(--accent); padding: 9px 24px; letter-spacing: 2px; transition: all var(--transition); font-size: 0.72rem; border-radius: 2px; }
.nav-links .btn-contact:hover { background: var(--accent); color: #0b0b0b; border-color: var(--accent); }
.nav-links .btn-contact::after { display: none; }
.hamburger { display: none; flex-direction: column; cursor: pointer; gap: 6px; z-index: 1001; }
.hamburger span { width: 26px; height: 2px; background: var(--text-primary); transition: all var(--transition); border-radius: 1px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ========== Hero 区域 ========== */

.hero { position: relative; width: 100%; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; background: #0b0b0b; }
.hero-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero-bg img, .hero-bg video { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(11, 11, 11, 0.35) 0%, rgba(11, 11, 11, 0.55) 100%); pointer-events: none; }
.hero-particles { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; opacity: 0.25; z-index: 1; }
.hero-particles .particle { position: absolute; border-radius: 50%; background: var(--accent); animation: floatUp linear infinite; }
@keyframes floatUp { 0% { transform: translateY(100vh) scale(0); opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { transform: translateY(-10vh) scale(1.5); opacity: 0; } }
.hero-big-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 100%; text-align: center; z-index: 2; pointer-events: none; font-family: var(--font-heading); font-size: clamp(4rem, 12vw, 11rem); font-weight: bold; letter-spacing: 0.00em; color: rgba(201, 168, 124, 0.12); text-transform: uppercase; white-space: nowrap; user-select: none; }
/* 波浪线效果 */
.hero-waves { position: absolute; top: 0; left: 0; margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden; z-index: 2; pointer-events: none; }
.hero-waves svg { width: 100%; height: 100%; }
.hero-waves svg path { fill: none; stroke: rgba(201, 168, 124, 0.18); stroke-width: 1px; }
.hero-content { position: relative; z-index: 3; text-align: center; padding: 0 24px; max-width: 750px; transform-style: preserve-3d; will-change: transform; transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1); }
.hero-content h1 { font-family: 'Glossy Display Ext Light', 'FangSong', '仿宋', 'STFangsong', serif; font-size: 160px; font-weight: 600; letter-spacing: 12px; color: var(--text-primary); opacity: 0.5; margin-bottom: 1.2rem; line-height: 1.2; white-space: nowrap; text-shadow: 0 1px 1px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.25), 0 1px 0 rgba(201,168,124,0.15); }
.hero-content h1 .accent { color: var(--accent); font-weight: 800; text-shadow: 0 1px 1px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.35), 0 4px 12px rgba(0,0,0,0.25), 0 0 30px rgba(201,168,124,0.15); }
.hero-content .hero-subtitle { font-size: 1rem; letter-spacing: 3px; color: var(--text-secondary); margin-bottom: 2.5rem; font-weight: 400; text-shadow: 0 1px 2px rgba(0,0,0,0.3); }
/* 鱼眼放大效果 - 文字悬停 */
.hero-content h1 .text3d-char, .hero-content .hero-subtitle .text3d-char { display: inline-block; transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), color 0.4s ease; cursor: default; }
.hero-content h1 .text3d-char.fisheye { transform: scale(1.18); color: #fff; z-index: 1; position: relative; }
.hero-content h1 .accent .text3d-char.fisheye { transform: scale(1.22); color: var(--accent-hover); }
.hero-content .hero-subtitle .text3d-char.fisheye { transform: scale(1.12); color: var(--text-primary); }
.hero-cta { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }
.btn-primary { display: inline-block; padding: 16px 40px; background: var(--accent); color: #0b0b0b; text-decoration: none; letter-spacing: 2.5px; font-size: 0.95rem; text-transform: uppercase; transition: all var(--transition); border-radius: 2px; font-weight: 600; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(201, 168, 124, 0.3); }
.btn-outline-light { display: inline-block; padding: 16px 40px; border: 1px solid var(--text-secondary); color: var(--text-primary); text-decoration: none; letter-spacing: 2.5px; font-size: 0.95rem; text-transform: uppercase; transition: all var(--transition); border-radius: 2px; }
.btn-outline-light:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.hero-scroll { position: absolute; bottom: 35px; left: 50%; transform: translateX(-50%); z-index: 4; animation: bounce 2s infinite; opacity: 0.6; cursor: pointer; }
.hero-scroll span { display: block; width: 22px; height: 22px; border-right: 2px solid var(--text-primary); border-bottom: 2px solid var(--text-primary); transform: rotate(45deg); }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(10px); } 60% { transform: translateX(-50%) translateY(5px); } }

/* ========== 通用区块 ========== */
.section { padding: 110px 0; width: 100%; overflow: visible; }
.section-header { margin-bottom: 70px; padding: 0; width: 100%; box-sizing: border-box; content-visibility: auto; contain-intrinsic-size: 200px; }
.section-header--left { text-align: left; }
.section-header--right { text-align: right; }
.section-title-row { display: flex; align-items: center; gap: 28px; width: 100%;
    position: relative;
}
.section-title-row > * {
    position: relative;
    z-index: 1;
}
.section-header--left .section-title-row { padding-left: var(--edge-padding); }
.section-header--right .section-title-row { flex-direction: row-reverse; padding-right: var(--edge-padding); }
.section-title-group { flex-shrink: 0; position: relative; overflow: visible; }
.section-title-group::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: -100%;
    left: 0;
    z-index: 0;
    background-image: url("background/粒子.png");
    background-repeat: no-repeat;
    background-position: right top;
    background-size: auto 140%;
    opacity: 0.35;
    pointer-events: none;
}
.section-header .section-number { font-size: 0.7rem; letter-spacing: 4px; color: var(--accent); text-transform: uppercase; margin-bottom: 0.5rem; font-weight: 500; font-family: 'Amazon Ember', sans-serif; }
.section-header h2 { font-family: 'Amazon Ember', sans-serif; font-size: 2.5rem; font-weight: 600; letter-spacing: 5px; margin: 0; color: var(--text-primary); line-height: 1.2; }
.section-header .section-line { flex: 1; height: 1px; min-width: 60px; background: linear-gradient(90deg, var(--accent) 0%, rgba(201, 168, 124, 0.15) 100%); opacity: 0.85; }
.section-header--right .section-line { background: linear-gradient(270deg, var(--accent) 0%, rgba(201, 168, 124, 0.15) 100%); }
.section-header p { font-size: 0.85rem; letter-spacing: 2px; color: var(--text-muted); margin-top: 1rem; font-weight: 400; }
.section-header--left p { padding-left: var(--edge-padding); }
.section-header--right p { padding-right: var(--edge-padding); }

/* ========== PPT & AIGC 区域背景 ========== */
.section-ppt {
    background: linear-gradient(180deg, rgba(201, 168, 124, 0.04) 0%, rgba(201, 168, 124, 0.04) 88%, #0b0b0b 100%);
}
.section-ppt .section { padding-bottom: 60px; }
#aigc {
    background: linear-gradient(180deg, #0b0b0b 0%, rgba(201, 168, 124, 0.04) 6%, rgba(201, 168, 124, 0.04) 100%);
}
#about { background: none; }

/* ========== 关于我 / 简历区域 ========== */
#about { position: relative; display: flex; flex-direction: column; min-height: 100vh; overflow: visible; padding: 0 !important; }
#about > .section-header { position: relative; z-index: 2; flex-shrink: 0; padding: 80px 0 0 0; margin-bottom: 0; width: 100%; box-sizing: border-box; overflow: hidden; }
#about > .section-header .section-title-row { width: 100%; padding-left: var(--edge-padding); }
#about > .section-header p { padding-left: var(--edge-padding); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; grid-template-rows: auto 1fr 1fr; position: relative; flex: 1; width: 100%; min-height: 60vh; overflow: hidden; }
.about-bg-image { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.about-bg-image img { position: absolute; left: -80px; top: 50%; transform: translateY(-50%); height: 100%; width: calc(100% + 80px); min-width: 100%; object-fit: cover; object-position: left center; display: block; }
/* 上下淡出 + 右侧遮罩 */
.about-bg-image::before { content: ''; position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, var(--bg-dark) 0%, transparent 12%, transparent 88%, var(--bg-dark) 100%); pointer-events: none; }
.about-bg-image::after { content: ''; position: absolute; inset: 0; z-index: 2; background: linear-gradient(90deg, rgba(11,11,11,0.45) 0%, rgba(11,11,11,0.7) 33%, rgba(11,11,11,0.9) 66%, rgba(11,11,11,0.97) 100%); pointer-events: none; }
/* 网格单元 */
.about-cell, .about-content { position: relative; z-index: 3; }
.about-cell-r1c1 { grid-row: 1; grid-column: 1; }
.about-cell-r1c2 { grid-row: 1; grid-column: 2; }
.about-cell-r1c3 { grid-row: 1; grid-column: 3; }
.about-cell-r2c1 { grid-row: 2; grid-column: 1; }
.about-cell-r3c1 { grid-row: 3; grid-column: 1; }
/* 内容区域：行2-3，列2-3 */
.about-content { grid-row: 2 / 4; grid-column: 2 / 4; display: flex; align-items: center; padding: 20px 40px; overflow: visible; }
.about-info { width: 100%; }
.about-info h3 { font-family: var(--font-heading); font-size: clamp(1.2rem, 2vw, 1.8rem); font-weight: 600; letter-spacing: 3px; margin-bottom: 1rem; color: var(--text-primary); }
.about-info .highlight { color: var(--accent); }
.about-info p { color: var(--text-secondary); margin-bottom: 1.2rem; font-size: clamp(0.8rem, 1.2vw, 0.95rem); letter-spacing: 0.5px; line-height: 1.8; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 1.2rem; }
.skill-tag { display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px; border: 1px solid var(--border-medium); color: var(--text-secondary); font-size: clamp(0.72rem, 0.95vw, 0.82rem); letter-spacing: 1.5px; border-radius: 2px; transition: all var(--transition); cursor: default; }
.skill-tag img { width: 18px; height: 18px; object-fit: contain; flex-shrink: 0; }
.skill-tag--icon { border: none; padding: 0; background: transparent; opacity: 0.7; transition: opacity var(--transition); }
.skill-tag--icon img { width: 32px; height: 32px; }
.skill-tag--icon:hover { opacity: 1; background: transparent; border: none; }
.skill-tag:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.btn-download-cv { display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; letter-spacing: 2px; font-size: clamp(0.65rem, 0.9vw, 0.75rem); text-transform: uppercase; transition: all var(--transition); border-radius: 2px; white-space: nowrap; }
.btn-download-cv:hover { background: var(--accent); color: #0b0b0b; }

/* ========== 作品展示通用样式 ========== */
.works-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(460px, 1fr)); gap: 28px; padding: 0 var(--edge-padding); contain: layout style paint; }
.work-card { position: relative; border-radius: var(--radius); overflow: hidden; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition); border: 1px solid var(--border-subtle); background: #111; }
.work-card:hover { transform: translateY(-8px); box-shadow: 0 30px 50px rgba(0, 0, 0, 0.6); border-color: var(--border-medium); }
.work-card-image { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #111; }
.work-card-image img, .work-card-image video { width: 100%; height: 100%; object-fit: cover; display: block; transition: filter var(--transition); will-change: filter; }
/* 信息层：覆盖在图片上，默认隐藏 */
.work-card-info { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 30px; opacity: 0; transition: opacity var(--transition); pointer-events: none; }
.work-card:hover .work-card-info,
.work-card.touch-active .work-card-info { opacity: 1; }
.work-card-info .work-category { font-size: 0.7rem; letter-spacing: 2.5px; color: var(--accent); text-transform: uppercase; margin-bottom: 0.6rem; font-weight: 500; }
.work-card-info h4 { font-family: var(--font-heading); font-size: 1.3rem; font-weight: 600; letter-spacing: 3px; color: #fff; margin-bottom: 0.5rem; text-shadow: 0 2px 8px rgba(0,0,0,0.5); }
.work-card-info p { font-size: 0.82rem; color: rgba(255,255,255,0.75); letter-spacing: 1px; text-shadow: 0 1px 4px rgba(0,0,0,0.4); }
/* hover 时图片模糊 */
.work-card:hover .work-card-image img,
.work-card:hover .work-card-image video,
.work-card.touch-active .work-card-image img,
.work-card.touch-active .work-card-image video { filter: blur(6px); }
/* 播放按钮：右上角 */
.work-card-overlay { position: absolute; top: 14px; right: 14px; z-index: 3; width: 44px; height: 44px; background: transparent; border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity var(--transition); pointer-events: none; }
.work-card:hover .work-card-overlay,
.work-card.touch-active .work-card-overlay { opacity: 1; }
.work-card-overlay .overlay-icon { font-size: 1.1rem; color: #fff; }

/* ========== AIGC 卡片专用样式 ========== */
/* 默认状态：图片/视频虚化，介绍文字可见，overlay可见 */
.aigc-card .work-card-image video,
.aigc-card .work-card-image img {
    filter: blur(6px);
}
.aigc-card .work-card-info {
    opacity: 1;
}
.aigc-card .work-card-overlay {
    opacity: 1;
}
/* hover/激活时：取消虚化，隐藏介绍文字，隐藏overlay */
.aigc-card:hover .work-card-image video,
.aigc-card:hover .work-card-image img,
.aigc-card.touch-active .work-card-image video,
.aigc-card.touch-active .work-card-image img {
    filter: none;
}
.aigc-card:hover .work-card-info,
.aigc-card.touch-active .work-card-info {
    opacity: 0;
}
.aigc-card:hover .work-card-overlay,
.aigc-card.touch-active .work-card-overlay {
    opacity: 0;
}

/* ========== 模态框 ========== */
.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.92); backdrop-filter: blur(10px); z-index: 2000; align-items: center; justify-content: center; flex-direction: column; opacity: 0; transition: opacity 0.3s ease; }
.modal.active { display: flex; opacity: 1; }
.modal-close { position: absolute; top: 20px; right: 30px; font-size: 2rem; color: #fff; cursor: pointer; z-index: 2001; transition: transform 0.2s; background: none; border: none; line-height: 1; }
.modal-close:hover { transform: scale(1.2); color: var(--accent); }
.modal-content { width: 90vw; height: 85vh; display: flex; align-items: center; justify-content: center; position: relative; }
.modal-content img { width: 100%; height: 100%; object-fit: contain; border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,0.8); }
.modal-content video { width: 100%; height: 100%; object-fit: contain; border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,0.8); background: #000; }
.fullscreen-btn { position: absolute; bottom: 20px; right: 20px; background: rgba(0,0,0,0.6); color: #fff; border: 1px solid rgba(255,255,255,0.3); padding: 8px 16px; font-size: 0.8rem; letter-spacing: 1px; cursor: pointer; border-radius: 4px; transition: all 0.2s; z-index: 2002; }
.fullscreen-btn:hover { background: var(--accent); border-color: var(--accent); color: #000; }
.ppt-nav { position: absolute; top: 50%; transform: translateY(-50%); font-size: 2rem; color: #fff; background: rgba(0,0,0,0.5); border: none; cursor: pointer; padding: 10px 15px; transition: background 0.2s; border-radius: 4px; z-index: 2002; }
.ppt-nav.prev { left: 10px; }
.ppt-nav.next { right: 10px; }
.ppt-nav:hover { background: var(--accent); color: #000; }

/* ========== 社交媒体区域 ========== */
.social-section {
    padding: 80px 0;
    width: 100%;
    overflow: hidden;
    background: linear-gradient(180deg, #0b0b0b 0%, #0b0b0b 78%, #101010 100%);
}
.social-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 40px; padding: 0 var(--edge-padding); }
.social-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 28px 20px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition);
    min-width: 160px;
    justify-content: center;
}
.social-card:hover { border-color: var(--accent); background: var(--bg-card-hover); transform: translateY(-3px); box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4); }
.social-card .social-icon {
    font-size: 1.6rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0;
    background: none;
    color: var(--accent);
    flex-shrink: 0;
    padding: 0;
}

/* 让社交icon内的图片自适应且无圆角 */
.social-card .social-icon img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: 0;
    background: none;
    box-shadow: none;
}
.social-card .social-info {
    text-align: center;
}
.social-card .social-name { font-size: 0.8rem; letter-spacing: 2px; font-weight: 500; text-transform: uppercase; }
.social-card .social-handle { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 1px; }

/* ========== 联系区域 ========== */
.contact-section {
    position: relative;
    background: linear-gradient(180deg, #101010 0%, var(--bg-card) 10%, var(--bg-card) 82%, #080808 100%);
    text-align: center;
    padding: 100px 30px;
    overflow: hidden;
}
#contactLeonCanvas { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.08; }
.contact-section h2 { position: relative; z-index: 1; font-family: var(--font-heading); font-size: 2.2rem; font-weight: 600; letter-spacing: 5px; margin-bottom: 1rem; }
.contact-section p { position: relative; z-index: 1; color: var(--text-secondary); letter-spacing: 2px; margin-bottom: 2.5rem; }
.contact-email { position: relative; z-index: 1; display: inline-block; font-size: 1.2rem; color: var(--accent); text-decoration: none; letter-spacing: 2px; border-bottom: 1px dashed var(--accent); padding-bottom: 4px; transition: all var(--transition); }
.contact-email:hover { color: var(--accent-hover); border-color: var(--accent-hover); }

/* ========== 页脚 ========== */
.footer {
    background: linear-gradient(180deg, #080808 0%, #000 15%);
    padding: 50px 30px;
    text-align: center;
}
.footer .footer-name { font-family: var(--font-heading); font-size: 1.1rem; letter-spacing: 4px; color: var(--text-primary); margin-bottom: 0.5rem; display: flex; align-items: center; justify-content: center; gap: 10px; }
.footer-logo-img { height: 28px; width: auto; flex-shrink: 0; }
.footer .footer-tagline { font-size: 0.7rem; letter-spacing: 2px; color: var(--text-muted); text-transform: uppercase; }
.footer .footer-copy { margin-top: 20px; font-size: 0.7rem; color: var(--text-muted); letter-spacing: 1.5px; opacity: 0.5; }

/* ========== 区域淡入动画 ========== */
.fade-section { opacity: 0; transform: translateY(40px); transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.fade-section.fade-in { opacity: 1; transform: translateY(0); }

/* ========== 响应式：平板及以下 (≤1024px) ========== */
@media (max-width: 1024px) {
    .about-grid {
        gap: 40px;
    }
    .works-grid {
        grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
        gap: 22px;
    }
    .social-card {
        min-width: 140px;
        padding: 18px 22px 16px;
    }
}

/* ========== 响应式：手机 (≤768px) ========== */
@media (max-width: 768px) {
    /* 导航栏 */
    .nav-container {
        padding: 0 16px;
        height: 60px;
        flex-wrap: nowrap;
    }
    .logo {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }
    .logo-img {
        height: 28px;
    }
    .hamburger {
        flex-shrink: 0;
        margin-left: 12px;
    }
    .footer-logo-img {
        height: 22px;
    }
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: rgba(11, 11, 11, 0.98);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        justify-content: center;
        gap: 28px;
        transition: right var(--transition);
        z-index: 1000;
        padding: 0 30px;
    }
    .nav-links.active {
        right: 0;
    }
    .nav-links a {
        font-size: 0.9rem;
        letter-spacing: 3px;
    }
    .nav-links .btn-contact {
        padding: 12px 28px;
        font-size: 0.85rem;
    }
    .hamburger {
        display: flex;
    }

    /* Hero 区域 */
    .hero-content {
        padding: 0 20px;
    }
    .hero-content h1 {
        font-size: 72px;
        letter-spacing: 3px;
    }
    .hero-content .hero-subtitle {
        font-size: 0.85rem;
        letter-spacing: 2px;
        margin-bottom: 2rem;
    }
    .hero-cta {
        gap: 12px;
    }
    .btn-primary,
    .btn-outline-light {
        padding: 13px 28px;
        font-size: 0.85rem;
        letter-spacing: 2px;
    }
    .hero-big-text {
        font-size: clamp(2.5rem, 10vw, 5rem);
        letter-spacing: 0.02em;
    }
    .hero-scroll {
        bottom: 20px;
    }
    .hero-scroll span {
        width: 18px;
        height: 18px;
    }

    /* 通用区块 */
    .section {
        padding: 60px 0;
    }
    .section-header {
        margin-bottom: 40px;
        padding: 0;
    }
    .section-header h2 {
        font-size: 1.6rem;
        letter-spacing: 2px;
    }
    .section-title-row {
        display: flex;
        align-items: center;
        gap: 28px;
        width: 100%;
        position: relative;
        overflow: hidden;
    }
    .section-header--left .section-title-row { padding-left: var(--edge-padding); }
    .section-header--right .section-title-row { flex-direction: row-reverse; padding-right: var(--edge-padding); }
    .section-header--left p { padding-left: var(--edge-padding); }
    .section-header--right p { padding-right: var(--edge-padding); }
    .section-header .section-line {
        min-width: 30px;
    }
    .section-header p {
        font-size: 0.78rem;
        margin-top: 0.8rem;
    }

    /* PPT 区域背景 */
    .section-ppt .section {
        padding: 60px 0;
    }

    /* 关于我 */
    #about { min-height: 100vh; }
    #about > .section-header { padding: 40px 0 0 0; }
    #about > .section-header .section-title-row { width: 100%; padding-left: var(--edge-padding); }
    #about > .section-header p { padding-left: var(--edge-padding); }
    .about-grid { grid-template-columns: 1fr 1fr 1fr; grid-template-rows: auto auto 1fr; }
    .about-content { grid-column: 1 / 4; grid-row: 2 / 4; padding: 20px var(--edge-padding); overflow: visible; }
    .about-info h3 {
        font-size: 1.4rem;
        letter-spacing: 2px;
        margin-bottom: 1.2rem;
    }
    .about-info p {
        font-size: 0.9rem;
        line-height: 1.8;
    }
    .skill-tags {
        gap: 10px;
        margin-bottom: 1.5rem;
    }
    .skill-tag {
        padding: 7px 16px;
        font-size: 0.75rem;
    }
    .skill-tag--icon img {
        width: 28px;
        height: 28px;
    }

    /* 作品网格 */
    .works-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* 移动端卡片点击显示 overlay */
    .work-card-overlay {
        opacity: 0;
        transition: opacity 0.15s ease;
    }
    .work-card.touch-active .work-card-overlay {
        opacity: 1;
    }
    .work-card:hover .work-card-overlay {
        opacity: 1;
    }
    .aigc-card .work-card-overlay { opacity: 1; }
    .aigc-card.touch-active .work-card-overlay { opacity: 0; }
    .aigc-card:hover .work-card-overlay { opacity: 0; }
    .work-card-info {
        padding: 20px;
    }
    .work-card-info h4 {
        font-size: 1.1rem;
    }
    .work-card-info p {
        font-size: 0.78rem;
    }

    /* 社交媒体 */
    .social-section {
        padding: 60px 0;
    }
    .social-grid {
        gap: 10px;
    }
    .social-card {
        min-width: calc(33.33% - 8px);
        padding: 14px 10px 12px;
        gap: 8px;
    }

    .social-card .social-name {
        font-size: 0.7rem;
    }
    .social-card .social-handle {
        font-size: 0.6rem;
    }

    /* 联系区域 */
    .contact-section {
        padding: 60px 16px;
    }
    .contact-section h2 {
        font-size: 1.6rem;
        letter-spacing: 3px;
    }
    .contact-section p {
        font-size: 0.85rem;
        letter-spacing: 1px;
    }
    .contact-email {
        font-size: 0.9rem;
        letter-spacing: 1px;
        word-break: break-all;
    }


    /* 页脚 */
    .footer {
        padding: 35px 16px;
    }
    .footer .footer-name {
        font-size: 0.9rem;
        letter-spacing: 2px;
    }

    /* 模态框 */
    .modal-close {
        top: 12px;
        right: 16px;
        font-size: 1.8rem;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .modal-content {
        width: 95vw;
        height: 80vh;
    }
    .modal-content img {
        width: 100%;
        height: 100%;
    }
    .modal-content video {
        width: 100%;
        height: 100%;
    }
    .ppt-nav {
        font-size: 1.5rem;
        padding: 12px 14px;
    }
    .ppt-nav.prev {
        left: 6px;
    }
    .ppt-nav.next {
        right: 6px;
    }
    .fullscreen-btn {
        bottom: 12px;
        right: 12px;
        padding: 10px 16px;
        font-size: 0.75rem;
    }
}

/* ========== 响应式：小屏手机 (≤480px) ========== */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 12px;
        height: 56px;
    }
    .logo {
        font-size: 0.9rem;
        letter-spacing: 1px;
        gap: 0;
    }
    .logo-text {
        display: none;
    }
    .logo-img {
        height: 28px;
    }
    .footer-logo-img {
        height: 18px;
    }
    .hero-content h1 {
        font-size: 52px;
        letter-spacing: 2px;
    }
    .hero-content .hero-subtitle {
        font-size: 0.78rem;
    }
    .hero-big-text {
        font-size: clamp(1.5rem, 14vw, 2.5rem);
    }
    .btn-primary,
    .btn-outline-light {
        padding: 12px 24px;
        font-size: 0.78rem;
    }
    .section {
        padding: 50px 0;
    }
    .section-header {
        padding: 0;
    }
    .section-header h2 {
        font-size: 1.3rem;
    }
    .section-title-row {
        width: 100%;
    }
    .section-header--left .section-title-row {
        padding-left: var(--edge-padding);
    }
    .section-header--right .section-title-row {
        padding-right: var(--edge-padding);
    }
    .section-header--left p {
        padding-left: var(--edge-padding);
    }
    .section-header--right p {
        padding-right: var(--edge-padding);
    }
    .about-grid {
        grid-template-columns: 1fr 1fr 1fr;
        grid-template-rows: auto auto 1fr;
    }
    #about > .section-header { padding: 30px 0 0 0; }
    #about > .section-header .section-title-row { width: 100%; padding-left: var(--edge-padding); }
    #about > .section-header p { padding-left: var(--edge-padding); }
    .about-content { grid-column: 1 / 4; grid-row: 2 / 4; padding: 16px var(--edge-padding); overflow: visible; }
    .about-info h3 {
        font-size: 1.2rem;
    }
    .about-info p {
        font-size: 0.85rem;
    }
    .works-grid {
        grid-template-columns: 1fr;
    }
    .social-card {
        min-width: calc(50% - 6px);
        padding: 12px 8px 10px;
    }

    .contact-section h2 {
        font-size: 1.3rem;
    }
    .contact-email {
        font-size: 0.8rem;
    }
}

/* ========== 移动端触摸优化 ========== */
@media (hover: none) and (pointer: coarse) {
    /* 触摸设备上禁用 hover 变换，避免"粘滞"效果 */
    .work-card:hover {
        transform: none;
        box-shadow: none;
    }
    .social-card:hover {
        transform: none;
        box-shadow: none;
    }
    .btn-primary:hover {
        transform: none;
        box-shadow: none;
    }
    .btn-outline-light:hover {
        transform: none;
    }
    /* 卡片 overlay 通过 JS 控制显示 */
    .work-card-overlay {
        opacity: 0;
    }
    .work-card.touch-active .work-card-overlay {
        opacity: 1;
    }
    .work-card:hover .work-card-overlay {
        opacity: 1;
    }
    .aigc-card .work-card-overlay { opacity: 1; }
    .aigc-card.touch-active .work-card-overlay { opacity: 0; }
    .aigc-card:hover .work-card-overlay { opacity: 0; }
    .work-card-info {
        padding: 20px;
    }
    .work-card-info h4 {
        font-size: 1.1rem;
    }
    .work-card-info p {
        font-size: 0.78rem;
    }
}

/* ========== 安全区域适配（刘海屏等）========== */
@supports (padding: env(safe-area-inset-bottom)) {
    .footer {
        padding-bottom: calc(35px + env(safe-area-inset-bottom));
    }
    .hero-scroll {
        bottom: calc(20px + env(safe-area-inset-bottom));
    }
    .nav-links {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

@font-face {
    font-family: 'DRUNKFONTS';
    src: url("type/DRUNKFONTS-Regular.otf") format("opentype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Amazon Ember';
    src: url("type/Amazon Ember.TTF") format("truetype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Glossy Display Ext Light';
    src: url("type/glossy display extended light.otf") format("opentype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Glossy Display Ext Italic';
    src: url("type/glossy display extended italic.otf") format("opentype");
    font-weight: normal;
    font-style: italic;
    font-display: swap;
}

@font-face {
    font-family: '新闻明朝体';
    src: url("type/新闻明朝体MNewsMPro-Light.otf") format("opentype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

.hero-big-text {
    font-family: 'DRUNKFONTS', sans-serif;
}

/* ========== PPT椭圆轮播样式（源自 elliptical-rotation-chart-master）========== */
.ppt-carousel-wrapper {
    --post-size: 25vw;
    --post-spacing: 1.78vw;
    --mask-size: 100vw;
    position: relative;
    width: 100%;
    padding: 0;
    overflow: visible;
}

#ppt #banner {
    overflow: hidden;
    position: relative;
    width: 100%;
    height: calc(var(--post-size) / 0.72);
    -webkit-mask: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNDQwIiBoZWlnaHQ9IjUwMCIgdmlld0JveD0iMCAwIDE0NDAgNTAwIiBpZD0iaiI+CiAgPHBhdGggZmlsbD0icmdiKDIwMCwyMDAsMjAwKSIgZmlsbC1ydWxlPSJldmVub2RkIiBkPSJNMCAwczI3NS4wNCAxMDAgNzIwIDEwMFMxNDQwIDAgMTQ0MCAwdjUwMHMtMjc1LjA0LTEwMC03MjAtMTAwUzAgNTAwIDAgNTAwVjB6Ii8+Cjwvc3ZnPgo=);
    mask: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNDQwIiBoZWlnaHQ9IjUwMCIgdmlld0JveD0iMCAwIDE0NDAgNTAwIiBpZD0iaiI+CiAgPHBhdGggZmlsbD0icmdiKDIwMCwyMDAsMjAwKSIgZmlsbC1ydWxlPSJldmVub2RkIiBkPSJNMCAwczI3NS4wNCAxMDAgNzIwIDEwMFMxNDQwIDAgMTQ0MCAwdjUwMHMtMjc1LjA0LTEwMC03MjAtMTAwUzAgNTAwIDAgNTAwVjB6Ii8+Cjwvc3ZnPgo=);
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: var(--mask-size);
    mask-size: var(--mask-size);
}

#ppt #banner .img-wrapper {
    display: flex;
    position: absolute;
    width: 100%;
    height: calc(var(--post-size) / 0.72);
    transform: translate(140vw, 0);
}

/* 进入视口时播放入场动画 */
#ppt .ppt-carousel-wrapper.entered #banner .img-wrapper {
    animation: pptAdmission 1.5s ease forwards;
}

#ppt .img-list {
    left: 0;
}

#ppt #banner .img-wrapper .img-box {
    height: 100%;
    display: inline-block;
    margin-right: var(--post-spacing);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
}

#ppt #banner .img-wrapper .img-box .info {
    position: absolute;
    display: flex;
    flex-direction: column;
    justify-content: center;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background: rgba(23, 23, 23, 0.5);
    text-align: center;
    color: #fff9f1;
    font-size: 4rem;
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

#ppt #banner .img-wrapper .img-box:hover .info {
    opacity: 1;
}

#ppt #banner .img-wrapper .img-box .info h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff9f1;
}

#ppt #banner .img-wrapper .img-box img {
    width: var(--post-size);
    height: 100%;
    object-position: center;
    object-fit: cover;
}

#ppt #banner .img-wrapper .img-box:last-child {
    transform: translate(-160.68vw, 0);
}

#ppt .btn-group {
    height: auto;
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 0);
    transition: 1s;
    opacity: 0;
    padding: 12px 0;
}

#ppt .btn-group .btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background-color: rgba(11, 11, 11, 0.7);
    margin: 10px;
    cursor: pointer;
    transition: 0.4s;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#ppt .btn-group .btn:hover {
    transform: scale(1.2);
    background-color: var(--accent);
    border-color: var(--accent);
}

#ppt .btn-group .btn:hover .icon {
    fill: #fff;
}

#ppt .btn-group .btn .icon {
    width: 30px;
    height: 30px;
    fill: #fff;
}

#ppt .btn-group .btn .right {
    transform: rotate(180deg);
}

@keyframes pptAdmission {
    0% {
        transform: translate(140vw, 0);
    }
    100% {
        transform: translate(13.39vw, 0);
    }
}

/* 响应式 - 平板 */
@media (max-width: 1024px) {
    .ppt-carousel-wrapper {
        --post-size: 38vw;
        --post-spacing: 2.5vw;
        --mask-size: 120vw;
    }
    #ppt #banner .img-wrapper .img-box:last-child {
        transform: translate(-243.9vw, 0);
    }
}

/* 响应式 - 手机 */
@media (max-width: 768px) {
    .ppt-carousel-wrapper {
        --post-size: 50vw;
        --post-spacing: 3vw;
        --mask-size: 150vw;
        padding: 0;
    }
    #ppt #banner .img-wrapper .img-box:last-child {
        transform: translate(-318vw, 0);
    }
    #ppt .btn-group .btn {
        width: 44px;
        height: 44px;
        margin: 6px;
    }
    #ppt .btn-group .btn .icon {
        width: 22px;
        height: 22px;
    }
    #ppt #banner .img-wrapper .img-box .info h3 {
        font-size: 1rem;
    }
    .section-ppt .section { padding-bottom: 40px; }
}

/* ========== 加载页面 (Preloader) ========== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader-bg {
    position: absolute;
    inset: 0;
    background: var(--bg-dark);
}

.preloader-content {
    position: relative;
    z-index: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transform: translateY(-6vh);
}

/* 环形进度包围 logo */
.preloader-ring-container {
    position: relative;
    width: 130px;
    height: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preloader-ring-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.preloader-ring-track {
    fill: none;
    stroke: rgba(255, 255, 255, 0.08);
    stroke-width: 3;
}

.preloader-ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 326.73;
    stroke-dashoffset: 326.73;
    transition: stroke-dashoffset 0.35s ease;
}

.preloader-logo-img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    animation: preloaderPulse 2s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

@keyframes preloaderPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.08); opacity: 1; }
}

.preloader-title {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 3px;
}

.preloader-subtitle {
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 4px;
    margin-top: -10px;
}

.preloader-slogan {
    font-family: 'DRUNKFONTS', var(--font-heading), sans-serif;
    font-size: 36px;
    color: var(--text-primary);
    letter-spacing: 2px;
    opacity: 0.9;
    animation: sloganFadeIn 1.2s ease-out forwards;
}

@keyframes sloganFadeIn {
    0% { opacity: 0; transform: translateY(8px); }
    100% { opacity: 0.9; transform: translateY(0); }
}

.preloader-tip {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* 加载完成隐藏 */
.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}