/* 关于页面样式 */

.about-section {
    padding: 60px 40px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

/* 卡片基础样式 */
.about-card {
    background: linear-gradient(135deg, rgba(0, 255, 208, 0.05), rgba(255, 0, 160, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 40px;
    transition: all 0.3s ease;
}

.about-card:hover {
    border-color: var(--cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 208, 0.1);
}

/* 个人资料卡片 */
.profile-card {
    text-align: center;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 3px solid transparent;
    background: linear-gradient(var(--black), var(--black)) padding-box,
                linear-gradient(135deg, var(--cyan), var(--magenta)) border-box;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--cyan), var(--magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.profile-title {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.profile-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 25px;
}

.profile-skills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.skill-tag {
    padding: 6px 14px;
    background: rgba(0, 255, 208, 0.1);
    border: 1px solid rgba(0, 255, 208, 0.3);
    border-radius: 20px;
    font-size: 12px;
    color: var(--cyan);
}

/* 项目卡片 */
.project-card {
    position: relative;
}

.project-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.project-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--white);
}

.project-subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.project-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 20px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-tag {
    padding: 4px 10px;
    background: rgba(255, 0, 160, 0.1);
    border: 1px solid rgba(255, 0, 160, 0.3);
    border-radius: 4px;
    font-size: 11px;
    color: var(--magenta);
}

.project-status {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--cyan), var(--magenta));
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--black);
}

/* 联系卡片 */
.contact-card .contact-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--cyan);
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(0, 255, 208, 0.1);
    transform: translateX(5px);
}

.contact-icon {
    font-size: 20px;
    width: 30px;
    text-align: center;
}

.contact-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    width: 60px;
}

.contact-value {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    flex: 1;
}

/* 工具卡片 */
.tools-card .tools-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--magenta);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.tool-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
}

.tool-name {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.tool-level {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    background: rgba(0, 255, 208, 0.2);
    color: var(--cyan);
}

/* 区块标题 */
.block-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--white);
}

.block-title .title-en {
    font-size: 14px;
    color: var(--cyan);
    margin-left: 10px;
    font-weight: 400;
}

/* 关于我Hero区块 */
.about-hero-block .block-title .title-en {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 400;
}

/* 关于我Hero区域 */
.about-hero {
    display: flex;
    align-items: stretch;
    min-height: 420px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.about-logo {
    position: relative;
    width: 36%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    background: linear-gradient(145deg, #2a2a35 0%, #1e1e28 100%);
    overflow: hidden;
}

/* 抽象线条动画 - 复杂无规则 */
.about-logo::before {
    content: '';
    position: absolute;
    inset: -100%;
    background: 
        /* 青绿线条 - 多角度 */
        linear-gradient(12deg, transparent 48%, rgba(0, 255, 208, 0.08) 49%, rgba(0, 255, 208, 0.08) 51%, transparent 52%),
        linear-gradient(45deg, transparent 48%, rgba(0, 255, 208, 0.05) 49%, rgba(0, 255, 208, 0.05) 51%, transparent 52%),
        linear-gradient(78deg, transparent 48%, rgba(0, 255, 208, 0.06) 49%, rgba(0, 255, 208, 0.06) 51%, transparent 52%),
        linear-gradient(123deg, transparent 48%, rgba(0, 255, 208, 0.04) 49%, rgba(0, 255, 208, 0.04) 51%, transparent 52%),
        /* 品红线条 */
        linear-gradient(156deg, transparent 48%, rgba(255, 0, 160, 0.06) 49%, rgba(255, 0, 160, 0.06) 51%, transparent 52%),
        linear-gradient(189deg, transparent 48%, rgba(255, 0, 160, 0.04) 49%, rgba(255, 0, 160, 0.04) 51%, transparent 52%),
        linear-gradient(234deg, transparent 48%, rgba(255, 0, 160, 0.07) 49%, rgba(255, 0, 160, 0.07) 51%, transparent 52%),
        linear-gradient(267deg, transparent 48%, rgba(255, 0, 160, 0.05) 49%, rgba(255, 0, 160, 0.05) 51%, transparent 52%),
        /* 混合线条 */
        linear-gradient(300deg, transparent 48%, rgba(0, 255, 208, 0.03) 49%, rgba(0, 255, 208, 0.03) 51%, transparent 52%),
        linear-gradient(333deg, transparent 48%, rgba(255, 0, 160, 0.03) 49%, rgba(255, 0, 160, 0.03) 51%, transparent 52%);
    background-size: 
        80px 120px, 150px 90px, 200px 180px, 100px 200px,
        130px 160px, 170px 110px, 90px 140px, 190px 130px,
        220px 100px, 110px 170px;
    animation: chaotic-flow 25s linear infinite;
}

.about-logo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(0, 255, 208, 0.15) 0%, transparent 40%),
        radial-gradient(ellipse at 80% 70%, rgba(255, 0, 160, 0.12) 0%, transparent 40%);
    animation: pulse-glow 3s ease-in-out infinite alternate;
}

/* 星空层 */
.about-logo .stars {
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    animation: stars-rotate 40s linear infinite;
}

/* 像素网格层 */
.about-logo .pixel-grid {
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    background-image: 
        linear-gradient(rgba(0, 255, 208, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 0, 160, 0.06) 1px, transparent 1px);
    background-size: 8px 8px;
}

.about-logo .stars::before,
.about-logo .stars::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(0, 255, 208, 0.6), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255, 0, 160, 0.5), transparent),
        radial-gradient(1px 1px at 160px 20px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(2px 2px at 200px 60px, rgba(0, 255, 208, 0.4), transparent),
        radial-gradient(1px 1px at 250px 90px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 300px 30px, rgba(255, 0, 160, 0.4), transparent),
        radial-gradient(1px 1px at 340px 70px, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(2px 2px at 380px 50px, rgba(0, 255, 208, 0.5), transparent),
        radial-gradient(1px 1px at 420px 100px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(2px 2px at 460px 20px, rgba(255, 0, 160, 0.3), transparent),
        radial-gradient(1px 1px at 500px 80px, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(2px 2px at 550px 40px, rgba(0, 255, 208, 0.4), transparent),
        radial-gradient(1px 1px at 600px 90px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(2px 2px at 650px 60px, rgba(255, 0, 160, 0.5), transparent),
        radial-gradient(1px 1px at 700px 30px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 750px 70px, rgba(0, 255, 208, 0.5), transparent),
        radial-gradient(1px 1px at 800px 50px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(2px 2px at 850px 20px, rgba(255, 0, 160, 0.4), transparent);
    background-size: 900px 120px;
}

.about-logo .stars::after {
    transform: translate(450px, 60px);
    opacity: 0.6;
    animation: stars-twinkle 4s ease-in-out infinite alternate;
}

@keyframes stars-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes stars-twinkle {
    0% { opacity: 0.3; }
    100% { opacity: 0.8; }
}



@keyframes chaotic-flow {
    0% { 
        transform: rotate(0deg);
    }
    100% { 
        transform: rotate(360deg);
    }
}

@keyframes pulse-glow {
    0% { opacity: 0.4; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.1); }
}

.about-logo img {
    position: absolute;
    width: 550px;
    height: 550px;
    object-fit: contain;
}

/* 故障艺术 Logo 效果 */
.about-logo img:nth-child(1) {
    z-index: 3;
    animation: logo-glitch-main 3s infinite;
}

.about-logo img:nth-child(2) {
    z-index: 2;
    opacity: 0;
    animation: logo-glitch-cyan 3s infinite;
}

.about-logo img:nth-child(3) {
    z-index: 1;
    opacity: 0;
    animation: logo-glitch-magenta 3s infinite;
}

/* 悬停时故障效果增强 */
.about-logo:hover img:nth-child(1) {
    animation: logo-glitch-main-hover 0.8s infinite;
}

.about-logo:hover img:nth-child(2) {
    animation: logo-glitch-cyan-hover 0.8s infinite;
}

.about-logo:hover img:nth-child(3) {
    animation: logo-glitch-magenta-hover 0.8s infinite;
}

.about-content {
    width: 64%;
    padding: 35px 45px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: linear-gradient(135deg, #0d1a1f 0%, #1a0d1a 50%, #0f0f14 100%);
    position: relative;
    overflow: hidden;
}

.about-content::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(0, 255, 208, 0.25) 0%, transparent 70%);
    pointer-events: none;
    animation: glow-pulse-cyan 4s ease-in-out infinite;
}

.about-content::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(ellipse at center, rgba(255, 0, 160, 0.2) 0%, transparent 70%);
    pointer-events: none;
    animation: glow-pulse-magenta 4s ease-in-out infinite;
    animation-delay: 2s;
}

@keyframes glow-pulse-cyan {
    0%, 100% {
        opacity: 0.6;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
}

@keyframes glow-pulse-magenta {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 0.9;
        transform: scale(1.15);
    }
}

/* 顶部标题区 - 中英文等宽 */
.about-header {
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: relative;
    z-index: 1;
    margin-bottom: 5px;
}

/* HUD 装饰 */
.hud-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 80px;
    pointer-events: none;
}

.hud-line {
    position: absolute;
    top: 15px;
    right: 0;
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 208, 0.4));
}

.hud-line::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 0;
    width: 40px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 0, 160, 0.3));
}

.hud-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 1px solid rgba(0, 255, 208, 0.3);
}

.hud-corner.top-right {
    top: 0;
    right: 0;
    border-left: none;
    border-bottom: none;
}

.hud-dots {
    position: absolute;
    top: 45px;
    right: 10px;
    display: flex;
    gap: 6px;
}

.hud-dots span {
    width: 4px;
    height: 4px;
    background: rgba(0, 255, 208, 0.5);
    border-radius: 50%;
    animation: hud-pulse 2s infinite;
}

.hud-dots span:nth-child(2) {
    animation-delay: 0.3s;
}

.hud-dots span:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes hud-pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.header-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
    margin: 0;
    line-height: 1.2;
}

.header-subtitle {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
    letter-spacing: 6px;
}

.about-header-en {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.header-title-en {
    font-size: 18px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--cyan), var(--magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
    margin: 0;
    line-height: 1.2;
}

.header-subtitle-en {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    margin: 4px 0 0 0;
    letter-spacing: 4px;
}

/* 能力图标区 */
.about-skills {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px 25px;
    position: relative;
    z-index: 1;
    margin: 5px 0;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    position: relative;
    transition: transform 0.3s ease;
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.skill-item:hover {
    transform: translateX(5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 255, 208, 0.2);
}

.skill-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.skill-icon svg {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
}

.skill-item:hover .skill-icon {
    background: rgba(0, 255, 208, 0.1);
    border-color: rgba(0, 255, 208, 0.4);
    box-shadow: 0 0 15px rgba(0, 255, 208, 0.15);
}

.skill-item:hover .skill-icon svg {
    color: var(--cyan);
}

.skill-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.skill-name {
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

.skill-desc {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
    transition: color 0.3s ease;
}

.skill-item:hover .skill-name {
    color: var(--white);
}

.skill-item:hover .skill-desc {
    color: rgba(255, 255, 255, 0.6);
}

.skill-item .skill-tooltip {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    padding: 10px 12px 10px 66px;
    background: #0f1419;
    border-radius: 10px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 10;
    border: 1px solid rgba(0, 255, 208, 0.3);
}

.skill-item:hover .skill-tooltip {
    opacity: 1;
    visibility: visible;
}

/* 自我介绍 */
.about-bio {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.9;
    position: relative;
    z-index: 1;
    padding: 18px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 5px;
}

.about-bio p {
    margin: 0;
    text-align: left;
}

/* 语言切换 */
.about-lang-switch {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 1;
    margin-top: 5px;
}

.bio-en {
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.6);
}

/* 占位卡片 */
.placeholder-card {
    background: linear-gradient(135deg, rgba(0, 255, 208, 0.05), rgba(255, 0, 160, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
}

.placeholder-icon {
    font-size: 48px;
    color: var(--cyan);
    margin-bottom: 15px;
    display: block;
}

.placeholder-card p {
    font-size: 18px;
    color: var(--white);
    margin-bottom: 10px;
}

.placeholder-hint {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* 莉娜计划区块 - 和关于我保持一致的宽度 */
.rina-block {
    margin-top: 60px;
    margin-bottom: 60px;
    width: 100%;
}

/* 莉娜标题右对齐 - 主标题在右，副标题在左 */
.rina-title-right {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
}

.rina-title-right .title-main {
    order: 1;
}

.rina-title-right .title-en {
    order: 2;
}

/* 莉娜 Hero 布局 - 左右结构 */
.rina-hero {
    display: flex;
    align-items: stretch;
    min-height: 320px;
    border-radius: 12px;
    border: 1px solid rgba(147, 112, 219, 0.2);
    overflow: hidden;
}

.rina-visual {
    position: relative;
    width: 36%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    background: linear-gradient(145deg, #2a2535 0%, #1e1a28 100%);
    overflow: hidden;
}

/* 莉娜网格层 */
.rina-visual .rina-grid {
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    background-image: 
        linear-gradient(rgba(147, 112, 219, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 208, 0.06) 1px, transparent 1px);
    background-size: 8px 8px;
}

/* 莉娜星空层 */
.rina-visual .rina-stars {
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    animation: rina-stars-rotate 40s linear infinite;
}

.rina-visual .rina-stars::before,
.rina-visual .rina-stars::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(147, 112, 219, 0.8), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(0, 255, 208, 0.6), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(147, 112, 219, 0.5), transparent),
        radial-gradient(1px 1px at 160px 20px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(2px 2px at 200px 60px, rgba(0, 255, 208, 0.4), transparent),
        radial-gradient(1px 1px at 250px 90px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 300px 30px, rgba(147, 112, 219, 0.4), transparent),
        radial-gradient(1px 1px at 340px 70px, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(2px 2px at 380px 50px, rgba(0, 255, 208, 0.5), transparent);
    background-size: 900px 120px;
}

.rina-visual .rina-stars::after {
    transform: translate(450px, 60px);
    opacity: 0.6;
    animation: rina-stars-twinkle 4s ease-in-out infinite alternate;
}

@keyframes rina-stars-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes rina-stars-twinkle {
    0% { opacity: 0.3; }
    100% { opacity: 0.8; }
}

/* 莉娜圆圈层 - 多层旋转 */
.rina-circles {
    position: absolute;
    inset: -30%;
    width: 160%;
    height: 160%;
    pointer-events: none;
}

.rina-circles::before {
    content: '';
    position: absolute;
    inset: 10%;
    border: 1px dashed rgba(0, 255, 208, 0.3);
    border-radius: 50%;
    animation: rina-circle-rotate 30s linear infinite;
}

.rina-circles::after {
    content: '';
    position: absolute;
    inset: 20%;
    border: 1px dotted rgba(255, 0, 160, 0.25);
    border-radius: 50%;
    animation: rina-circle-rotate-reverse 25s linear infinite;
}

/* 莉娜线条层 - 扫描线效果 */
.rina-lines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.rina-lines::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 208, 0.4), transparent);
    animation: rina-scan 4s ease-in-out infinite;
}

.rina-lines::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent, rgba(255, 0, 160, 0.3), transparent);
    animation: rina-scan-vertical 5s ease-in-out infinite;
}

.rina-logo {
    position: relative;
    z-index: 5;
    width: 160px;
    height: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

/* 莉娜主标识 - 多层几何解构 */
.rina-logo::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid rgba(0, 255, 208, 0.5);
    transform: rotate(45deg);
    animation: rina-rotate 20s linear infinite;
    box-shadow: 
        0 0 20px rgba(0, 255, 208, 0.3),
        inset 0 0 20px rgba(0, 255, 208, 0.1);
}

.rina-logo::after {
    content: '';
    position: absolute;
    width: 75%;
    height: 75%;
    border: 2px solid rgba(255, 0, 160, 0.5);
    transform: rotate(-45deg);
    animation: rina-rotate-reverse 15s linear infinite;
    box-shadow: 
        0 0 15px rgba(255, 0, 160, 0.3),
        inset 0 0 15px rgba(255, 0, 160, 0.1);
}

/* 第三层菱形 */
.rina-logo .diamond {
    position: absolute;
    width: 50%;
    height: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transform: rotate(45deg);
    animation: rina-rotate 10s linear infinite;
}

/* 中文汉字 - 故障效果 */
.rina-kanji {
    position: relative;
    z-index: 6;
    font-size: 28px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 8px;
    text-shadow: 
        0 0 10px rgba(0, 255, 208, 0.5),
        2px 0 rgba(255, 0, 160, 0.3),
        -2px 0 rgba(0, 255, 208, 0.3);
    animation: kanji-glitch 4s infinite;
}

.rina-symbol {
    position: relative;
    z-index: 6;
    font-size: 36px;
    font-weight: 800;
    background: linear-gradient(135deg, #00FFD0, #FF00A0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
    text-shadow: 0 0 30px rgba(0, 255, 208, 0.3);
}

/* 莉娜罗马音 - 故障文字动画 */
.rina-romaji {
    position: relative;
    z-index: 6;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 3px;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    margin-top: 4px;
}

.rina-romaji .char {
    display: inline-block;
    animation: glitch-text 2.5s infinite;
}

.rina-romaji .char:nth-child(1) { animation-delay: 0s; }
.rina-romaji .char:nth-child(2) { animation-delay: 0.15s; }
.rina-romaji .char:nth-child(3) { animation-delay: 0.3s; }
.rina-romaji .char:nth-child(4) { animation-delay: 0.45s; }
.rina-romaji .char:nth-child(5) { animation-delay: 0.6s; }
.rina-romaji .char:nth-child(6) { animation-delay: 0.75s; }
.rina-romaji .char:nth-child(7) { animation-delay: 0.9s; }
.rina-romaji .char:nth-child(8) { animation-delay: 1.05s; }
.rina-romaji .char:nth-child(9) { animation-delay: 1.2s; }
.rina-romaji .char:nth-child(10) { animation-delay: 1.35s; }

@keyframes rina-rotate {
    0% { transform: rotate(45deg); }
    100% { transform: rotate(405deg); }
}

@keyframes rina-rotate-reverse {
    0% { transform: rotate(-45deg); }
    100% { transform: rotate(-405deg); }
}

@keyframes rina-circle-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes rina-circle-rotate-reverse {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(-360deg); }
}

@keyframes rina-scan {
    0%, 100% { top: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

@keyframes rina-scan-vertical {
    0%, 100% { left: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { left: 100%; opacity: 0; }
}

@keyframes glitch-text {
    0%, 85%, 100% { 
        transform: translate(0);
        opacity: 1;
    }
    87% { 
        transform: translate(-2px, 1px);
        opacity: 0.7;
        color: #00FFD0;
    }
    89% { 
        transform: translate(2px, -1px);
        opacity: 0.8;
        color: #FF00A0;
    }
    91% { 
        transform: translate(-1px, 0);
        opacity: 1;
    }
    93% {
        transform: translate(1px, 1px);
        opacity: 0.6;
        color: #00FFD0;
    }
    95% {
        transform: translate(0);
        opacity: 1;
    }
}

@keyframes kanji-glitch {
    0%, 90%, 100% {
        text-shadow: 
            0 0 10px rgba(0, 255, 208, 0.5),
            2px 0 rgba(255, 0, 160, 0.3),
            -2px 0 rgba(0, 255, 208, 0.3);
    }
    92% {
        text-shadow: 
            0 0 20px rgba(255, 0, 160, 0.8),
            -3px 0 rgba(255, 0, 160, 0.5),
            3px 0 rgba(0, 255, 208, 0.5);
        transform: translateX(1px);
    }
    94% {
        text-shadow: 
            0 0 15px rgba(0, 255, 208, 0.8),
            3px 0 rgba(255, 0, 160, 0.5),
            -3px 0 rgba(0, 255, 208, 0.5);
        transform: translateX(-1px);
    }
    96% {
        text-shadow: 
            0 0 10px rgba(0, 255, 208, 0.5),
            2px 0 rgba(255, 0, 160, 0.3),
            -2px 0 rgba(0, 255, 208, 0.3);
        transform: translateX(0);
    }
}

/* 莉娜弥文全名 - 若隐若现 */
.rina-fullname {
    position: absolute;
    inset: -20%;
    width: 140%;
    height: 140%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 2;
}

.fullname-char {
    position: absolute;
    font-size: 120px;
    font-weight: 100;
    color: transparent;
    -webkit-text-stroke: 1px rgba(147, 112, 219, 0.15);
    text-stroke: 1px rgba(147, 112, 219, 0.15);
    animation: fullname-float 8s ease-in-out infinite, fullname-fade 6s ease-in-out infinite;
}

.fullname-char:nth-child(1) { 
    top: 5%; 
    left: 10%; 
    animation-delay: 0s, 0s;
    transform: rotate(-15deg);
}
.fullname-char:nth-child(2) { 
    top: 15%; 
    right: 15%; 
    animation-delay: -2s, -1.5s;
    transform: rotate(10deg);
}
.fullname-char:nth-child(3) { 
    bottom: 20%; 
    left: 20%; 
    animation-delay: -4s, -3s;
    transform: rotate(8deg);
}
.fullname-char:nth-child(4) { 
    bottom: 10%; 
    right: 10%; 
    animation-delay: -6s, -4.5s;
    transform: rotate(-12deg);
}

@keyframes fullname-float {
    0%, 100% { transform: translateY(0) rotate(var(--rot, 0deg)); }
    50% { transform: translateY(-15px) rotate(var(--rot, 0deg)); }
}

@keyframes fullname-fade {
    0%, 100% { opacity: 0.05; -webkit-text-stroke-color: rgba(147, 112, 219, 0.1); }
    25% { opacity: 0.15; -webkit-text-stroke-color: rgba(0, 255, 208, 0.2); }
    50% { opacity: 0.08; -webkit-text-stroke-color: rgba(255, 0, 160, 0.15); }
    75% { opacity: 0.12; -webkit-text-stroke-color: rgba(147, 112, 219, 0.18); }
}

/* 涟漪效果层 */
.rina-ripples {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.rina-ripples::before,
.rina-ripples::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    border: 1px solid rgba(0, 255, 208, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: ripple-expand 4s ease-out infinite;
}

.rina-ripples::after {
    animation-delay: 2s;
    border-color: rgba(255, 0, 160, 0.15);
}

@keyframes ripple-expand {
    0% {
        width: 100px;
        height: 100px;
        opacity: 0.5;
    }
    100% {
        width: 300px;
        height: 300px;
        opacity: 0;
    }
}

.rina-content {
    width: 64%;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

/* 莉娜内容背景层 - 大胆色块流动 + 阴影立体感 */
.rina-content-bg {
    position: absolute;
    inset: 0;
    background: 
        /* 色块1 - 左上深紫 */
        radial-gradient(circle at 15% 25%, rgba(147, 112, 219, 0.7) 0%, rgba(147, 112, 219, 0.25) 35%, transparent 55%),
        /* 色块2 - 右下深青 */
        radial-gradient(circle at 85% 75%, rgba(0, 255, 208, 0.6) 0%, rgba(0, 255, 208, 0.2) 30%, transparent 50%),
        /* 色块3 - 中间品红 */
        radial-gradient(circle at 60% 40%, rgba(255, 0, 160, 0.55) 0%, rgba(255, 0, 160, 0.15) 40%, transparent 60%),
        /* 色块4 - 左下暖黄 */
        radial-gradient(circle at 30% 70%, rgba(255, 200, 100, 0.5) 0%, rgba(255, 200, 100, 0.12) 35%, transparent 55%),
        /* 基础层 - 稍深中性色 */
        linear-gradient(145deg, #d8d4ce 0%, #c8c4be 50%, #d0ccc6 100%);
    background-size: 
        180% 180%,
        180% 180%,
        180% 180%,
        180% 180%,
        100% 100%;
    animation: rina-blob-flow 10s ease-in-out infinite;
    z-index: 0;
}

/* 叠加阴影层 */
.rina-content-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(0,0,0,0.15) 0%, transparent 40%),
        radial-gradient(ellipse at 70% 80%, rgba(0,0,0,0.12) 0%, transparent 35%);
    animation: rina-shadow-flow 10s ease-in-out infinite;
    z-index: 1;
    pointer-events: none;
}

@keyframes rina-blob-flow {
    0%, 100% {
        background-position: 
            0% 0%,
            100% 100%,
            50% 50%,
            0% 100%,
            0% 0%;
    }
    25% {
        background-position: 
            80% 30%,
            20% 70%,
            80% 20%,
            60% 40%,
            0% 0%;
    }
    50% {
        background-position: 
            100% 60%,
            0% 40%,
            20% 80%,
            80% 20%,
            0% 0%;
    }
    75% {
        background-position: 
            40% 80%,
            60% 20%,
            70% 60%,
            30% 70%,
            0% 0%;
    }
}

@keyframes rina-shadow-flow {
    0%, 100% {
        opacity: 0.6;
        transform: translate(0, 0);
    }
    50% {
        opacity: 0.9;
        transform: translate(-5%, 3%);
    }
}

/* 背景纹理图案 */
.rina-content-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.4;
    background-image:
        /* 细网格 */
        linear-gradient(rgba(120, 110, 100, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(120, 110, 100, 0.08) 1px, transparent 1px),
        /* 点阵 */
        radial-gradient(circle at 25% 25%, rgba(147, 112, 219, 0.15) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(0, 255, 208, 0.1) 1px, transparent 1px);
    background-size: 20px 20px, 20px 20px, 40px 40px, 40px 40px;
}

/* 内容内层 - 保证文字可读性 */
.rina-content-inner {
    position: relative;
    z-index: 1;
    padding: 30px 35px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

/* 反向布局 - 视觉在右边（默认flex顺序即可，HTML中visual在后） */
.rina-hero-reversed {
    flex-direction: row;
}

.rina-header-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    position: relative;
}

.rina-title {
    font-size: 22px;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.rina-romaji-title {
    font-size: 14px;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 3px;
    text-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.rina-badge {
    position: absolute;
    top: 0;
    right: 0;
    font-size: 10px;
    color: #ffffff;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 14px 6px 28px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-transform: uppercase;
    letter-spacing: 2px;
    backdrop-filter: blur(4px);
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

/* HUD 闪烁点 - 品红色更醒目 */
.rina-badge::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: #FF00A0;
    border-radius: 50%;
    box-shadow: 
        0 0 10px #FF00A0,
        0 0 20px #FF00A0,
        0 0 30px #FF00A0;
    animation: hud-blink 1.2s infinite;
}

@keyframes hud-blink {
    0%, 100% { 
        opacity: 1; 
        box-shadow: 0 0 10px #FF00A0, 0 0 20px #FF00A0, 0 0 30px #FF00A0;
    }
    50% { 
        opacity: 0.3; 
        box-shadow: 0 0 5px #FF00A0, 0 0 10px #FF00A0;
    }
}

/* HUD 扫描线装饰 */
.rina-badge::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 4px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.15) 50%,
        transparent 100%
    );
    animation: hud-scan 2s linear infinite;
    pointer-events: none;
}

@keyframes hud-scan {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.rina-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.8;
    margin-bottom: 20px;
    text-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.rina-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px 15px;
    margin-bottom: 20px;
}

.rina-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.feature-icon {
    font-size: 15px;
}

.rina-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.rina-tech .tech-tag {
    padding: 5px 12px;
    background: rgba(147, 112, 219, 0.25);
    border: 1px solid rgba(147, 112, 219, 0.5);
    border-radius: 4px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 项目进度 */
.rina-progress {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(100, 90, 80, 0.06);
    border-radius: 8px;
    border: 1px solid rgba(100, 90, 80, 0.1);
}

.progress-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
}

.progress-label {
    width: 70px;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(100, 90, 80, 0.15);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00a085, #7b5fb5);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.progress-status {
    width: 50px;
    text-align: right;
    color: rgba(255, 255, 255, 0.85);
    font-size: 11px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 实际应用场景 */
.rina-usecase {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px 14px;
    background: rgba(147, 112, 219, 0.05);
    border: 1px solid rgba(147, 112, 219, 0.15);
    border-radius: 8px;
    margin-bottom: 15px;
}

.usecase-label {
    font-size: 11px;
    color: rgba(147, 112, 219, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.usecase-text {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.5;
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* AIGC 标注 */
.rina-aigc-note {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(0, 255, 208, 0.05);
    border: 1px solid rgba(0, 255, 208, 0.15);
    border-radius: 8px;
    margin-top: 15px;
}

.aigc-icon {
    font-size: 14px;
}

.aigc-text {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 站酷作品网格 */
.zcool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.zcool-card {
    display: block;
    background: linear-gradient(135deg, rgba(0, 255, 208, 0.05), rgba(255, 0, 160, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    transition: all 0.3s ease;
}

.zcool-card:hover {
    border-color: var(--cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 208, 0.1);
}

.zcool-cover {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.zcool-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.zcool-card:hover .zcool-cover img {
    transform: scale(1.05);
}

.zcool-info {
    padding: 20px;
}

.zcool-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 8px;
    line-height: 1.4;
}

.zcool-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
    line-height: 1.5;
}

.zcool-stats {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}

/* 占位区域 */
.about-placeholder {
    text-align: center;
    padding: 120px 40px;
    max-width: 600px;
    margin: 0 auto;
}

.about-placeholder h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--cyan), var(--magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-placeholder p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 2px;
}

/* 响应式 */
@media (max-width: 768px) {
    .about-section {
        padding: 40px 20px;
    }

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

    .about-card {
        padding: 30px 25px;
    }

    .profile-avatar {
        width: 100px;
        height: 100px;
    }

    .profile-name {
        font-size: 24px;
    }

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

    .about-placeholder {
        padding: 80px 20px;
    }

    .about-placeholder h2 {
        font-size: 32px;
    }

    /* ── 区块标题：手机端统一间距 ── */
    .block-title {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .block-title .title-en {
        font-size: 12px;
        margin-left: 8px;
    }

    /* ── 关于我 Hero 区：横向 → 纵向堆叠 ── */
    .about-hero {
        flex-direction: column;
        min-height: auto;
    }

    /* Logo 区：占满宽度，高度收缩 */
    .about-logo {
        width: 100%;
        min-height: 200px;
        padding: 30px 20px;
    }

    /* Logo 图片：从 550px 收缩到屏幕安全尺寸 */
    .about-logo img {
        width: 180px;
        height: 180px;
    }

    /* 文字区：占满宽度，收紧内边距 */
    .about-content {
        width: 100%;
        padding: 24px 20px;
    }

    /* 标题区缩小 */
    .header-title {
        font-size: 24px;
    }

    .header-subtitle {
        font-size: 12px;
        letter-spacing: 4px;
    }

    .header-title-en {
        font-size: 14px;
    }

    /* 技能网格：手机端单列，更易读 */
    .about-skills {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .skill-item {
        padding: 10px 14px;
    }

    /* 自我介绍字体微调 */
    .about-bio {
        font-size: 13.5px;
        padding: 14px 0;
    }

    /* ── 莉娜 Hero 区：横向 → 纵向堆叠 ── */
    .rina-hero {
        flex-direction: column;
        min-height: auto;
    }

    /* 视觉区：占满宽度，紧凑高度 */
    .rina-visual {
        width: 100%;
        min-height: 180px;
        padding: 25px 20px;
    }

    /* 莉娜 Logo 收缩 */
    .rina-logo {
        width: 110px;
        height: 110px;
    }

    /* 内容区：全宽 */
    .rina-content {
        width: 100%;
    }

    /* 内容内层 */
    .rina-content-inner {
        padding: 22px 18px;
    }

    /* 反向布局在移动端也堆叠 */
    .rina-hero-reversed {
        flex-direction: column;
    }

    /* 标题区域 */
    .rina-title {
        font-size: 18px;
        flex-wrap: wrap;
    }

    .rina-romaji-title {
        font-size: 12px;
    }

    /* 描述文字 */
    .rina-desc {
        font-size: 13.5px;
        margin-bottom: 16px;
    }

    /* 特性网格：单列 */
    .rina-features {
        grid-template-columns: 1fr;
        gap: 8px;
        margin-bottom: 16px;
    }

    .rina-feature {
        font-size: 12.5px;
    }

    /* 进度条区域 */
    .rina-progress {
        padding: 12px;
        gap: 8px;
        margin-bottom: 16px;
    }

    .progress-label {
        width: 60px;
        font-size: 11px;
    }

    .progress-status {
        width: 45px;
        font-size: 10px;
    }

    /* 应用场景 */
    .rina-usecase {
        padding: 10px 12px;
        margin-bottom: 12px;
    }

    .usecase-text {
        font-size: 12.5px;
    }

    /* 技术标签 */
    .rina-tech {
        gap: 6px;
        margin-bottom: 16px;
    }

    .rina-tech .tech-tag {
        padding: 4px 10px;
        font-size: 10px;
    }

    /* AIGC 标注 */
    .rina-aigc-note {
        padding: 8px 12px;
        margin-top: 12px;
    }

    /* 莉娜 block 间距收紧 */
    .rina-block {
        margin-top: 40px;
        margin-bottom: 40px;
    }

    /* 标题右对齐在手机端恢复正常（避免反向排版问题） */
    .rina-title-right {
        flex-direction: row;
        justify-content: flex-start;
    }

    /* badge 定位修正 */
    .rina-badge {
        position: relative;
        top: auto;
        right: auto;
        display: inline-block;
        margin-left: auto;
        padding: 4px 12px 4px 24px;
        font-size: 9px;
    }

    /* 关于我 Hero block 标题间距 */
    .about-hero-block {
        margin-bottom: 30px;
    }

    /* HUD 装饰在手机端隐藏 */
    .hud-decoration {
        display: none;
    }

    /* 技能 tooltip 在移动端禁用（触摸设备无 hover） */
    .skill-item .skill-tooltip {
        display: none;
    }

    /* 站酷网格：手机端单列 */
    .zcool-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* 超小屏 (≤480px) */
@media (max-width: 480px) {
    .about-section {
        padding: 30px 16px;
    }

    .about-logo {
        min-height: 180px;
    }

    .about-logo img {
        width: 160px;
        height: 160px;
    }

    .about-content {
        padding: 20px 16px;
    }

    .rina-visual {
        min-height: 160px;
        padding: 20px;
    }

    .rina-logo {
        width: 80px;
        height: 80px;
    }

    .rina-content-inner {
        padding: 18px 16px;
    }

    .rina-title {
        font-size: 16px;
    }

    .rina-kanji {
        font-size: 22px;
    }

    .rina-symbol {
        font-size: 28px;
    }
}