/* ============ 像素风浅粉浅蓝个人主页样式 ============ */

:root {
  --pink-light: #ffe4ec;
  --pink: #ffc1d1;
  --pink-deep: #f48fb1;
  --pink-dark: #ec6b9a;
  --blue-light: #d6ebff;
  --blue: #a5c8e4;
  --blue-deep: #6a8fbd;
  --blue-dark: #35588e;
  --ink-blue: #1f3a5f;
  --bg: #fff3f7;
  --card: #fffafc;
  --text: #3a3338;
  --text-sub: #8a7480;
  --border: #ffd6e0;
  --shadow: rgba(236, 107, 154, 0.16);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "SimHei", "黑体", "Heiti SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: linear-gradient(165deg, #fff7fa 0%, #ffedf3 30%, #e9f2ff 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ============ 英文点缀字体 ============ */
.nav-logo {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: 16px;
  letter-spacing: 1px;
}

/* ============ 天空背景（云朵 + 星星） ============ */
.sky { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }

.cloud { position: absolute; background: #ffffff; opacity: 0.85; image-rendering: pixelated; }
.cloud::after { content: ""; position: absolute; background: #ffffff; }
.cloud-1 { width: 140px; height: 40px; top: 12%; left: -160px; animation: drift 50s linear infinite; }
.cloud-1::after { width: 70px; height: 40px; top: -26px; left: 28px; }
.cloud-2 { width: 100px; height: 30px; top: 30%; left: -120px; animation: drift 65s linear infinite; animation-delay: -20s; opacity: 0.7; }
.cloud-2::after { width: 50px; height: 30px; top: -20px; left: 22px; }
.cloud-3 { width: 160px; height: 44px; top: 8%; left: -180px; animation: drift 75s linear infinite; animation-delay: -40s; opacity: 0.6; }
.cloud-3::after { width: 80px; height: 44px; top: -28px; left: 32px; }

@keyframes drift { to { transform: translateX(calc(100vw + 200px)); } }

.star { position: absolute; width: 8px; height: 8px; background: var(--pink-deep); image-rendering: pixelated; animation: twinkle 2.5s ease-in-out infinite; }
.star::before { content: ""; position: absolute; width: 8px; height: 8px; background: var(--pink-deep); transform: rotate(45deg); }
.star-1 { top: 18%; left: 15%; }
.star-2 { top: 42%; left: 82%; animation-delay: -0.6s; width: 6px; height: 6px; }
.star-3 { top: 62%; left: 8%; animation-delay: -1.2s; width: 6px; height: 6px; }
.star-4 { top: 8%; left: 68%; animation-delay: -1.8s; width: 5px; height: 5px; }
.star-5 { top: 78%; left: 90%; animation-delay: -0.9s; width: 5px; height: 5px; }

@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(0.7) rotate(0deg); }
  50% { opacity: 1; transform: scale(1) rotate(45deg); }
}

/* ============ 导航 ============ */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(255, 250, 252, 0.82); backdrop-filter: blur(14px) saturate(1.15); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-size: 15px; color: var(--blue-dark); text-decoration: none; }
.nav-links { display: flex; gap: 22px; }
.nav-links a { color: var(--text-sub); text-decoration: none; font-size: 14px; transition: color 0.2s; }
.nav-links a:hover { color: var(--pink-dark); }

/* ============ 通用区块 ============ */
main { position: relative; z-index: 1; }
.section { max-width: 1080px; margin: 0 auto; padding: 40px 24px; }
.section-wide { max-width: 1320px; }
.section-title { font-size: 24px; font-weight: 600; color: var(--blue-dark); text-align: center; margin-bottom: 20px; letter-spacing: 3px; }
.section-title::after {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  margin: 12px auto 0;
  background: var(--ink-blue);
  border-radius: 1px;
}

.wall-hint { text-align: center; font-size: 13px; color: var(--text-sub); margin-bottom: 28px; }

/* ============ 项目照片墙 ============ */
.wall-wrap {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  justify-content: center;
}

/* 照片墙容器：相对定位，内部照片绝对定位错落 */
.wall {
  position: relative;
  flex: 1 1 auto;
  max-width: 900px;
  height: 820px;
}

/* 拍立得照片 */
.polaroid {
  position: absolute;
  background: #fff;
  padding: 9px 9px 0;
  box-shadow:
    0 2px 5px rgba(0, 0, 0, 0.12),
    4px 7px 12px rgba(0, 0, 0, 0.14),
    9px 14px 22px rgba(53, 88, 142, 0.16);
  transform: rotate(var(--rot, -2deg));
  transition: transform 0.45s cubic-bezier(0.2, 0.9, 0.3, 1.2),
              box-shadow 0.45s ease;
  cursor: pointer;
  z-index: 1;
  outline: none;
}

/* 右下渐变阴影（立体感） */
.polaroid::after {
  content: "";
  position: absolute;
  left: 10%;
  right: -3%;
  bottom: -5%;
  height: 30%;
  background: linear-gradient(135deg, transparent 40%, rgba(0, 0, 0, 0.3));
  filter: blur(7px);
  border-radius: 4px;
  z-index: -1;
  transition: opacity 0.45s ease;
}

.pp-img {
  position: relative;
  width: 100%;
  aspect-ratio: var(--ratio, 1 / 1);
  overflow: hidden;
  background: #eee;
}
.pp-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

/* 图片 hover 浮层 */
.pp-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  padding: 14px;
  background: linear-gradient(180deg, transparent 40%, rgba(30, 35, 50, 0.82) 100%);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.pp-desc { font-size: 12px; color: #fff; line-height: 1.5; }
.pp-link { font-size: 13px; color: #ffd6e0; text-decoration: none; font-weight: 700; }
.pp-link:hover { text-decoration: underline; }

/* 照片底部说明（白边内） */
.polaroid figcaption {
  padding: 9px 4px 13px;
  text-align: center;
}
.pp-title {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  color: #4a3b42;
  line-height: 1.35;
  margin-bottom: 4px;
}
.pp-tag {
  display: inline-block;
  font-size: 10.5px;
  padding: 1px 8px;
  color: #fff;
  border-radius: 2px;
}
.tag-research { background: var(--pink-dark); }
.tag-done { background: var(--blue-deep); }
.tag-idea { background: #b9a6c4; }
.tag-project { background: #8fa8c8; }

/* hover / 聚焦：放大 + 摆正 + 抬升 */
.polaroid:hover,
.polaroid:focus-within {
  z-index: 20;
  transform: rotate(0deg) scale(1.12);
  box-shadow:
    0 6px 10px rgba(0, 0, 0, 0.18),
    10px 18px 26px rgba(0, 0, 0, 0.22),
    18px 30px 44px rgba(53, 88, 142, 0.28);
}
.polaroid:hover::after,
.polaroid:focus-within::after { opacity: 0.4; }
.polaroid:hover .pp-overlay,
.polaroid:focus-within .pp-overlay { opacity: 1; }

/* ---- 每张照片的定位与比例 ---- */
/* 主照片：DreamerV3，横版演示系统截图，中心偏右 */
.polaroid.main {
  --ratio: 2259 / 1090;
  --rot: -2deg;
  width: 60%;
  left: 36%;
  top: 18px;
}
/* UniWM：横版，第二大，在研，左下 */
.polaroid.p-uniwm {
  --ratio: 720 / 460;
  --rot: 1.5deg;
  width: 34%;
  left: 2%;
  top: 300px;
}
/* 智农虫盾：竖版，左上 */
.polaroid.p-agro {
  --ratio: 420 / 540;
  --rot: -4deg;
  width: 17%;
  left: 2%;
  top: 18px;
}
/* dofbot 机械臂：横版，主照片下方 */
.polaroid.p-dofbot {
  --ratio: 799 / 411;
  --rot: 2deg;
  width: 42%;
  left: 36%;
  top: 370px;
}
/* 猕猴桃溃疡病：方形，左下 */
.polaroid.p-kiwi {
  --ratio: 1 / 1;
  --rot: 3deg;
  width: 19%;
  left: 2%;
  top: 580px;
}
/* netSeamLess：方形，右下最小 */
.polaroid.p-net {
  --ratio: 1 / 1;
  --rot: -2deg;
  width: 15%;
  left: 81%;
  top: 370px;
}

/* ============ 便签贴（个人信息，点击展开关于我） ============ */
.note-column {
  flex: 0 0 320px;
  width: 320px;
}

.sticky-note {
  position: relative;
  background: #fff9c9;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.08),
    0 10px 22px rgba(0, 0, 0, 0.18);
  transform: rotate(1.5deg);
  text-align: center;
  color: #6b5a30;
}

/* 底部微微翘起：底部弧形投影 */
.sticky-note::after {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: -12px;
  height: 18px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.26), transparent);
  filter: blur(4px);
  transform: rotate(-1.5deg);
  z-index: -1;
}

/* summary 去掉默认箭头，作为点击区 */
.sticky-note summary {
  list-style: none;
  cursor: pointer;
  outline: none;
  padding: 26px 22px 24px;
}
.sticky-note summary::-webkit-details-marker { display: none; }
.sticky-note summary:hover .note-hint { color: var(--pink-dark); }

/* 顶部胶带 */
.sticky-note .tape {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%) rotate(-3deg);
  width: 108px;
  height: 26px;
  background: rgba(214, 235, 255, 0.75);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* 圆形头像框 */
.avatar-ring {
  width: 108px;
  height: 108px;
  border-radius: 50%;
  margin: 6px auto 14px;
  border: 4px solid #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
  overflow: hidden;
  background: #ffe4ec;
}
.avatar-ring img { width: 100%; height: 100%; object-fit: cover; display: block; }

.note-name { font-size: 26px; font-weight: 800; letter-spacing: 2px; color: #5a4a2a; }
.note-en { font-size: 13px; letter-spacing: 1px; color: #9c8a4e; margin-bottom: 14px; }
.note-line { font-size: 13.5px; line-height: 1.7; }
.note-dir { font-weight: 700; margin-bottom: 14px; }
.note-links { margin-top: 14px; font-size: 14px; }
.note-links a { color: #7a5c2e; text-decoration: none; font-weight: 700; }
.note-links a:hover { color: var(--pink-dark); }
.note-links span { margin: 0 6px; color: #c0b070; }
.note-hint { margin-top: 12px; font-size: 11px; color: #b3a570; transition: color 0.2s; }

/* 展开的“关于我” */
.note-about {
  text-align: left;
  padding: 4px 22px 24px;
  border-top: 1px dashed rgba(122, 92, 46, 0.3);
  margin: 0 0 0;
}
.note-about p { font-size: 13px; line-height: 1.75; margin-bottom: 10px; color: #6b5a30; }

/* 技能（便签贴下方） */
.note-skills {
  margin-top: 34px;
  background: #fff;
  padding: 18px 18px 20px;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.08),
    0 8px 18px rgba(0, 0, 0, 0.14);
  transform: rotate(-1deg);
}
.skills-title { font-size: 15px; font-weight: 800; color: var(--blue-dark); margin-bottom: 12px; letter-spacing: 1px; }
.skills-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skills-tags span {
  padding: 5px 14px;
  font-size: 12.5px;
  background: var(--blue-light);
  color: var(--blue-dark);
  font-weight: 700;
  border: 2px solid var(--blue);
  border-radius: 2px;
}

/* ============ 学习笔记（查看全部链接） ============ */
.note-rule-link {
  display: block;
  text-align: center;
  font-size: 13px;
  color: var(--ink-blue);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 1px;
}
.note-rule-link:hover { color: var(--pink-dark); }

/* ============ 学习笔记列表（首页） ============ */
.notes-list {
  list-style: none;
  max-width: 620px;
  margin: 0 auto 22px;
  padding: 0;
}
.notes-item { margin: 0; }
.notes-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 22px;
  background: #fff;
  border: 1px solid #e8ecf1;
  border-bottom: none;
  text-decoration: none;
  transition: background 0.2s ease, padding-left 0.25s ease;
}
.notes-item:last-child .notes-link { border-bottom: 1px solid #e8ecf1; }
.notes-link:hover {
  background: #f7f9fc;
  padding-left: 28px;
}
.notes-title { font-size: 14.5px; font-weight: 600; color: var(--ink-blue); line-height: 1.5; }
.notes-date { font-size: 12px; color: #9ca3af; white-space: nowrap; }

/* ============ 博客文章页 ============ */
.article-main { max-width: 780px; margin: 0 auto; padding: 40px 24px 60px; }
.article-header { text-align: center; }
.article-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--blue-dark);
  line-height: 1.45;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-sub);
}
.article-tag {
  background: var(--blue-light);
  color: var(--blue-dark);
  padding: 2px 10px;
  border: 2px solid var(--blue);
  border-radius: 2px;
  font-weight: 700;
  font-size: 11.5px;
}
.article-rule {
  width: 56%;
  max-width: 420px;
  height: 2px;
  margin: 26px auto 36px;
  background: var(--ink-blue);
}

.article { font-size: 16px; color: var(--text); }
.article p { margin-bottom: 18px; line-height: 1.9; }
.article strong { color: var(--pink-dark); font-weight: 800; }
.article blockquote {
  margin: 26px 0;
  padding: 16px 20px;
  background: var(--card);
  border-left: 4px solid var(--pink-deep);
  color: #6b5560;
  font-size: 15px;
  border-radius: 0 8px 8px 0;
  box-shadow: 0 2px 8px var(--shadow);
}
.article blockquote p { margin: 0; line-height: 1.8; }
.article ol { margin: 0 0 20px 26px; }
.article ol li { margin-bottom: 10px; line-height: 1.85; }
.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 14px;
  background: var(--card);
  box-shadow: 0 2px 10px var(--shadow);
}
.article table th,
.article table td {
  padding: 10px 12px;
  text-align: center;
  border: 1px solid var(--border);
}
.article table th { background: var(--blue-light); color: var(--blue-dark); font-weight: 800; }
.article table tr:nth-child(even) td { background: #fff5f9; }

/* ============ 页脚 ============ */
.footer { position: relative; z-index: 1; text-align: center; padding: 50px 24px 60px; border-top: 1px solid var(--border); margin-top: 40px; }
.footer p { margin-bottom: 6px; }
.footer-sub { font-size: 13px; color: var(--text-sub); }
.footer-link { font-size: 14px; }
.footer-link a { color: var(--blue-dark); text-decoration: none; }
.footer-link a:hover { color: var(--pink-dark); }

/* ============ 响应式 ============ */
@media (max-width: 1020px) {
  .wall-wrap { flex-direction: column; align-items: center; }
  .note-column { flex: 0 0 auto; width: 320px; }
  .note-skills { margin-top: 24px; }
}

@media (max-width: 760px) {
  /* 窄屏：照片墙改为纵向堆叠 */
  .wall { height: auto; max-width: 480px; margin: 0 auto; }
  .polaroid {
    position: relative;
    width: 100% !important;
    left: auto !important;
    top: auto !important;
    margin-bottom: 28px;
    transform: rotate(var(--rot, -2deg)) !important;
  }
  .polaroid:hover, .polaroid:focus-within { transform: rotate(0deg) scale(1.03) !important; }
}

@media (max-width: 640px) {
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13px; }
  .section { padding: 32px 16px; }
}