/* ============================================================
   个人作品集 — 朱槿轩
   配色：深蓝 + 白色底 + 金色点缀
   欢迎页：大花束 + 问候语全景背景
   ============================================================ */

/* --- CSS 变量 --- */
:root {
  --color-bg: #fafaf8;
  --color-white: #ffffff;
  --color-text: #1a1a1a;
  --color-text-light: #5a5a5a;
  --color-text-lighter: #888888;
  --color-primary: #0f1a2e;
  --color-primary-light: #1a2d4a;
  --color-accent: #c9a96e;
  --color-accent-light: #e0c78a;
  --color-border: #e8e5df;
  --color-card-bg: #ffffff;
  --color-tag-bg: #f0ede6;
  --color-tag-text: #4a4538;
  --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --max-width: 1100px;
  --nav-height: 70px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 50px rgba(0,0,0,0.10);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-cn);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding { padding: 100px 0; }

/* ============================================================
   导航栏
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto; padding: 0 24px;
  height: var(--nav-height);
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-en);
  font-size: 1.25rem; font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}

.nav-links { display: flex; gap: 32px; }

.nav-links a {
  font-size: 0.9rem; font-weight: 500;
  color: var(--color-text-light);
  position: relative; padding: 4px 0;
  transition: color var(--transition);
}

.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-links a:hover, .nav-links a.active { color: var(--color-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-resume-btn {
  padding: 8px 20px;
  border: 1.5px solid var(--color-primary);
  background: transparent; border-radius: 24px;
  font-family: var(--font-cn); font-size: 0.85rem; font-weight: 500;
  cursor: pointer; color: var(--color-primary);
  transition: all var(--transition);
  display: flex; align-items: center; gap: 6px;
}

.nav-resume-btn:hover { background: var(--color-primary); color: #fff; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}

.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--color-primary); border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   欢迎页（全屏）
   ============================================================ */
.welcome {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 80px 24px;
}

/* 花束淡色全景背景 */
.welcome-bg {
  position: absolute; inset: 0; z-index: 0;
}

.welcome-bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.12;
  transform: scale(1.05);
  filter: saturate(0.9) brightness(1.05);
}

.welcome-bg-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.92) 0%,
    rgba(255,255,255,0.78) 40%,
    rgba(255,255,255,0.88) 100%
  );
}

/* 欢迎内容 */
.welcome-content {
  position: relative; z-index: 1;
  max-width: 1200px; width: 100%;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}

/* 左侧文字 */
.welcome-text {
  max-width: 680px;
}

.welcome-greeting {
  font-size: 1.2rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.welcome-title {
  font-family: var(--font-cn);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
  line-height: 1.3;
}

.welcome-subtitle {
  font-size: 1.3rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 32px;
}

.welcome-actions {
  display: flex; gap: 16px; flex-wrap: wrap; justify-content: center;
}

/* 右侧花束（置于文字后方作为氛围元素） */
.welcome-flower {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: -1;
}

.welcome-flower-img {
  width: 320px;
  max-height: 65vh;
  object-fit: contain;
  opacity: 0.55;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.08))
          drop-shadow(0 8px 20px rgba(201,169,110,0.12));
  animation: flowerFloat 6s ease-in-out infinite;
}

@keyframes flowerFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-8px) rotate(0.5deg); }
  66% { transform: translateY(-4px) rotate(-0.3deg); }
}

/* 按钮 */
.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 14px 36px;
  background: var(--color-primary); color: #fff;
  border: none; border-radius: 28px;
  font-family: var(--font-cn); font-size: 0.95rem; font-weight: 500;
  cursor: pointer; transition: all var(--transition);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(15,26,46,0.3);
}

.btn-outline {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 14px 30px;
  background: transparent; color: var(--color-primary);
  border: 1.5px solid var(--color-primary); border-radius: 28px;
  font-family: var(--font-cn); font-size: 0.95rem; font-weight: 500;
  cursor: pointer; transition: all var(--transition);
}

.btn-outline:hover {
  background: var(--color-primary); color: #fff;
}

/* 滚动提示 */
.scroll-hint {
  position: absolute; bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 1;
}

.scroll-hint span {
  font-size: 0.75rem; color: var(--color-text-lighter); letter-spacing: 2px;
}

.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--color-text-lighter), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================================
   板块通用头部
   ============================================================ */
.section-header {
  text-align: center; margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-en); font-size: 0.8rem;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.4rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 8px;
}

.section-sub {
  font-size: 1rem; color: var(--color-text-light);
}

/* ============================================================
   ① 关于我
   ============================================================ */
.about {
  background: var(--color-white);
}

.about-grid {
  display: flex; gap: 64px; align-items: center;
  max-width: 900px; margin: 0 auto;
}

.about-avatar {
  flex-shrink: 0;
}

.about-avatar-frame {
  width: 240px; border-radius: 24px; overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.10);
}

.about-avatar-frame img {
  width: 100%; aspect-ratio: 3/4; object-fit: cover; display: block;
}

.about-text {
  flex: 1;
}

.about-text h2 {
  font-size: 2rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 16px;
}

.about-text p {
  font-size: 0.95rem; color: var(--color-text-light);
  line-height: 1.9; margin-bottom: 12px;
}

.about-text strong {
  color: var(--color-primary); font-weight: 600;
}

.about-match-grid {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px;
}

.about-match-item {
  padding: 8px 18px;
  background: var(--color-tag-bg);
  border-radius: 20px;
  font-size: 0.85rem; font-weight: 500;
  color: var(--color-tag-text);
  display: flex; align-items: center; gap: 6px;
}

/* ============================================================
   ② 教育背景（横向时间线 + 动漫女孩）
   ============================================================ */
.education {
  background: var(--color-bg);
  overflow: visible;
}

/* 横向时间线容器 */
.edu-horizontal {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding-bottom: 100px;
}

/* 三栏卡片 */
.edu-cards-row {
  display: flex;
  gap: 24px;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.edu-card-h {
  flex: 1;
  max-width: 300px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
}

.edu-card-h:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.edu-card-icon {
  font-size: 2.6rem;
  margin-bottom: 8px;
}

.edu-stage {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
  padding: 2px 12px;
  border: 1px solid var(--color-accent);
  border-radius: 12px;
}

.edu-card-h h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.edu-card-sub {
  font-size: 0.88rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.edu-card-date {
  font-size: 0.78rem;
  color: var(--color-text-lighter);
  margin-bottom: 12px;
}

.edu-card-courses {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.8;
  text-align: left;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}


/* ============================================================
   ③ 项目与实践
   ============================================================ */
.experience {
  background: var(--color-white);
}

.exp-list {
  display: flex; flex-direction: column; gap: 32px;
}

.exp-card {
  background: var(--color-card-bg); border-radius: var(--radius-lg);
  padding: 36px; border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.exp-card:hover {
  box-shadow: var(--shadow-md); border-color: transparent;
}

.exp-header {
  display: flex; gap: 20px; margin-bottom: 20px; align-items: flex-start;
}

.exp-company-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; flex-shrink: 0; border: 1px solid var(--color-border);
}

.exp-meta h3 {
  font-size: 1.15rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 2px;
}

.exp-role {
  font-size: 0.9rem; color: var(--color-accent); font-weight: 500; margin-bottom: 2px;
}

.exp-date { font-size: 0.8rem; color: var(--color-text-lighter); }

.exp-details { margin-bottom: 20px; padding-left: 0; }

.exp-details li {
  position: relative; padding-left: 16px; margin-bottom: 10px;
  font-size: 0.92rem; color: var(--color-text); line-height: 1.8;
}

.exp-details li::before {
  content: ''; position: absolute; left: 0; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent);
}

.exp-details li em {
  font-style: normal; color: var(--color-accent); font-weight: 600;
}

.exp-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}

.exp-tags span {
  font-size: 0.78rem; background: var(--color-tag-bg);
  color: var(--color-tag-text); padding: 5px 14px;
  border-radius: 16px; font-weight: 500;
  transition: all var(--transition);
}

.exp-tags span:hover { background: var(--color-primary); color: #fff; }

/* 校园经历 */
.campus-card {
  background: linear-gradient(135deg, #fafaf8 0%, #f5f3ee 100%);
}

.campus-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 20px;
}

.campus-item {
  background: var(--color-white); border-radius: var(--radius);
  padding: 20px; border: 1px solid var(--color-border);
}

.campus-item h4 {
  font-size: 0.95rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 8px;
}

.campus-item p {
  font-size: 0.85rem; color: var(--color-text-light);
  line-height: 1.7; margin-bottom: 8px;
}

.campus-item em { font-style: normal; color: var(--color-accent); font-weight: 600; }
.campus-date { font-size: 0.75rem; color: var(--color-text-lighter); }

/* ============================================================
   ④ 成果展示
   ============================================================ */
.portfolio {
  background: var(--color-bg);
}

.cert-section { margin-bottom: 64px; }

.cert-section-title {
  font-size: 1.15rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 24px; text-align: center;
}

/* 证书轮播 */
.cert-carousel {
  width: 100%; overflow: hidden; position: relative;
  mask-image: linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%);
}

.cert-track {
  display: flex; gap: 24px; width: max-content;
  animation: certScroll 30s linear infinite;
  padding: 16px 0;
}

.cert-track:hover { animation-play-state: paused; }

@keyframes certScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.cert-item {
  flex-shrink: 0; width: 300px;
  background: var(--color-card-bg); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--color-border);
  transition: all var(--transition); cursor: pointer;
}

.cert-item:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.cert-item img {
  width: 100%;
  height: 230px;
  object-fit: contain;
  background: #fafaf8;
  padding: 8px;
}

.cert-item-label {
  padding: 10px 16px 14px; font-size: 0.85rem; font-weight: 500;
  color: var(--color-primary); text-align: center;
}

/* 上传区 */
.upload-section { max-width: 700px; margin: 0 auto; }

.upload-hint {
  font-size: 0.9rem; color: var(--color-text-light);
  text-align: center; margin-bottom: 24px;
}

/* ===== 项目展示：视频 + APK + 截图 ===== */
.project-showcase {
  display: flex; gap: 28px; margin-bottom: 36px; align-items: flex-start;
}

/* 视频区 */
.project-video {
  flex: 1; min-width: 0;
}

.project-video-player {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  background: #000;
  display: block;
}

.project-video-label {
  font-size: 0.85rem; color: var(--color-text-light);
  text-align: center; margin-top: 10px;
}

/* APK 下载卡片 */
.project-apk {
  flex-shrink: 0; width: 200px;
}

.apk-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 20px; text-align: center;
  transition: all var(--transition);
}

.apk-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.apk-icon { font-size: 2.6rem; margin-bottom: 10px; display: block; }
.apk-name { font-size: 0.9rem; font-weight: 600; color: var(--color-primary); margin-bottom: 4px; }
.apk-desc { font-size: 0.78rem; color: var(--color-text-lighter); margin-bottom: 16px; }

.apk-dl-btn {
  width: 100%; justify-content: center;
  font-size: 0.85rem; padding: 10px 20px;
}

/* App 截图 */
.project-screenshots {
  margin-bottom: 32px;
}

.project-screenshots h4 {
  font-size: 0.95rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 16px;
}

.screenshots-row {
  display: flex; gap: 16px;
}

.screenshot-card {
  flex: 1;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.screenshot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.screenshot-card img {
  width: 100%; aspect-ratio: 9/19;
  object-fit: cover; display: block;
}

.screenshot-card span {
  display: block; text-align: center;
  padding: 10px; font-size: 0.82rem; font-weight: 500;
  color: var(--color-text-light);
}

/* 低调的上传按钮 */
.upload-inline {
  text-align: center; margin-bottom: 20px;
}

.upload-link-btn {
  background: none; border: none;
  font-family: var(--font-cn); font-size: 0.85rem;
  color: var(--color-text-lighter);
  cursor: pointer;
  padding: 6px 12px;
  transition: all var(--transition);
  border-bottom: 1px dashed var(--color-border);
}

.upload-link-btn:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.upload-list { margin-top: 20px; }

.upload-files {
  display: flex; flex-direction: column; gap: 8px;
}

.upload-files:empty::after {
  content: none;
}

.upload-file-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; background: var(--color-white);
  border-radius: var(--radius); border: 1px solid var(--color-border);
  font-size: 0.85rem;
}

.upload-file-icon { font-size: 1.3rem; flex-shrink: 0; }
.upload-file-info { flex: 1; min-width: 0; }

.upload-file-name {
  font-size: 0.85rem; font-weight: 500; color: var(--color-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.upload-file-size { font-size: 0.73rem; color: var(--color-text-lighter); }

.upload-file-remove {
  flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%;
  border: none; background: transparent; color: var(--color-text-lighter);
  cursor: pointer; font-size: 0.9rem; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
}

.upload-file-remove:hover { background: #fee; color: #e55; }

/* ============================================================
   ⑤ 联系方式
   ============================================================ */
.contact {
  background: var(--color-white);
}

.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  max-width: 900px; margin: 0 auto;
}

.contact-info { display: flex; flex-direction: column; gap: 24px; }

.contact-item { display: flex; gap: 16px; align-items: flex-start; }

.contact-icon {
  font-size: 1.4rem; flex-shrink: 0;
  width: 44px; height: 44px; background: var(--color-bg);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
}

.contact-label { font-size: 0.8rem; color: var(--color-text-lighter); margin-bottom: 2px; }
.contact-value { font-size: 0.95rem; font-weight: 500; color: var(--color-primary); }
a.contact-value:hover { color: var(--color-accent); }
.contact-resume-btn { margin-top: 8px; align-self: flex-start; }

.contact-form {
  background: var(--color-bg); padding: 36px;
  border-radius: var(--radius-lg); border: 1px solid var(--color-border);
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block; font-size: 0.85rem; font-weight: 500;
  color: var(--color-primary); margin-bottom: 6px;
}

.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 1.5px solid var(--color-border); border-radius: var(--radius);
  font-family: var(--font-cn); font-size: 0.9rem; color: var(--color-text);
  background: var(--color-white); transition: all var(--transition);
  resize: vertical;
}

.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.1);
}

.form-group input::placeholder, .form-group textarea::placeholder { color: #c0c0c0; }

.contact-form .btn-primary { width: 100%; justify-content: center; margin-top: 8px; }

.form-note {
  font-size: 0.75rem; color: var(--color-text-lighter);
  text-align: center; margin-top: 12px;
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
  background: var(--color-primary); color: rgba(255,255,255,0.7);
  padding: 40px 0; text-align: center;
}

.footer p { font-size: 0.85rem; }
.footer-sub { margin-top: 4px; color: rgba(255,255,255,0.4); font-size: 0.8rem; }

/* ============================================================
   滚动揭示动画
   ============================================================ */
.reveal {
  opacity: 0; transform: translateY(36px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* ============================================================
   弹窗 / Toast
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.85);
  z-index: 2000; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}

.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal-content { position: relative; max-width: 90vw; max-height: 90vh; }
.modal-content img { max-width: 90vw; max-height: 85vh; object-fit: contain; border-radius: 8px; }

.modal-close {
  position: absolute; top: -40px; right: 0;
  background: none; border: none; color: #fff;
  font-size: 1.5rem; cursor: pointer; padding: 8px;
}

.toast {
  position: fixed; bottom: 32px; left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-primary); color: #fff;
  padding: 12px 28px; border-radius: 28px;
  font-size: 0.9rem; z-index: 3000; opacity: 0;
  transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .welcome-content {
    text-align: center;
  }

  .welcome-title { font-size: 2.6rem; }
  .welcome-flower-img { width: 240px; opacity: 0.35; }
  .welcome-flower { right: -80px; }
  .welcome-actions { justify-content: center; }

  .about-grid {
    flex-direction: column; text-align: center; gap: 36px;
  }

  .about-avatar-frame { width: 180px; margin: 0 auto; }
  .about-match-grid { justify-content: center; }
}

@media (max-width: 768px) {
  :root { --nav-height: 60px; }
  .section-padding { padding: 64px 0; }
  .section-header h2 { font-size: 1.8rem; }

  .nav-links {
    position: fixed; top: var(--nav-height); left: 0; width: 100%;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(16px);
    flex-direction: column; padding: 24px; gap: 16px;
    transform: translateY(-100%); opacity: 0; pointer-events: none;
    transition: all var(--transition); border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-resume-btn { display: none; }
  .nav-toggle { display: flex; }

  .welcome { padding: 100px 20px 60px; }
  .welcome-title { font-size: 2rem; }
  .welcome-subtitle { font-size: 1.1rem; }
  .welcome-flower-img { width: 200px; opacity: 0.3; }
  .welcome-flower { right: -120px; }

  .edu-cards-row { flex-wrap: wrap; gap: 16px; }
  .edu-card-h { min-width: 220px; padding: 28px 18px 22px; }
  .girl-svg { width: 60px; height: 90px; }
  .exp-card { padding: 24px; }
  .exp-header { flex-direction: column; gap: 12px; }
  .campus-grid { grid-template-columns: 1fr; }
  .cert-item { width: 260px; }
  .cert-item img { height: 180px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .project-showcase { flex-direction: column; }
  .project-apk { width: 100%; }
  .screenshots-row { flex-wrap: wrap; }
  .screenshot-card { min-width: 140px; flex: 1 1 40%; }
}

@media (max-width: 480px) {
  .welcome-title { font-size: 1.7rem; }
  .welcome-subtitle { font-size: 1rem; }
  .welcome-flower-img { width: 160px; opacity: 0.25; }
  .welcome-flower { right: -140px; }
  .welcome-actions { flex-direction: column; align-items: center; }

  .about-avatar-frame { width: 150px; }
  .hero-name { font-size: 1.7rem; }
}