/* ============================================================
   金璟宇 · 个人主页   孟菲斯波普风
   配色靠 CSS 变量，body[data-theme] 一键换肤
   ============================================================ */

/* ---------- 主题 ---------- */
/* 配色三件套（别混用）：
     --ink       描边 / 边框 / 硬阴影，需要和背景形成对比
     --text      正文颜色，永远要在 --bg 和 --paper 上可读
     --on-accent 彩色块（黄/青/蓝/粉…）上的文字，各主题都保持深色           */
:root {
  --bg: #fff8e7;
  --ink: #1a1a1a;
  --text: #1a1a1a;
  --on-accent: #1a1a1a;
  --paper: #ffffff;
  --c-coral: #ff6b6b;
  --c-yellow: #ffd93d;
  --c-teal: #4ecdc4;
  --c-blue: #4d96ff;
  --c-pink: #ff9ff3;
  --c-purple: #a66dd4;
  --shadow: 6px 6px 0 var(--ink);
  --shadow-sm: 4px 4px 0 var(--ink);
  --bw: 3px;
  --dot: rgba(26, 26, 26, 0.09);
}
/* 深色主题：描边和正文都翻成亮色，但彩色块上仍然压深色字 */
body[data-theme='neon'] {
  --bg: #14141f;
  --ink: #f0f0f7;
  --text: #f0f0f7;
  --on-accent: #12121a;
  --paper: #1e1e2e;
  --c-coral: #ff3860;
  --c-yellow: #ffe700;
  --c-teal: #00f5d4;
  --c-blue: #3d7bff;
  --c-pink: #ff6ee0;
  --c-purple: #9d5cff;
  --dot: rgba(255, 255, 255, 0.09);
  --shadow: 6px 6px 0 #05050a;
  --shadow-sm: 4px 4px 0 #05050a;
  color-scheme: dark;
}
body[data-theme='candy'] {
  --bg: #fff0f6;
  --ink: #2b1b2e;
  --text: #2b1b2e;
  --on-accent: #2b1b2e;
  --paper: #ffffff;
  --c-coral: #ff5d8f;
  --c-yellow: #ffc75f;
  --c-teal: #96e6a1;
  --c-blue: #6c8cff;
  --c-pink: #ff9ce0;
  --c-purple: #845ec2;
}
body[data-theme='paper'] {
  --bg: #f4f1ea;
  --ink: #2e294e;
  --text: #2e294e;
  --on-accent: #2e294e;
  --paper: #fffdf7;
  --c-coral: #e4572e;
  --c-yellow: #ffc914;
  --c-teal: #17bebb;
  --c-blue: #4d7ea8;
  --c-pink: #f3a0c8;
  --c-purple: #9055a2;
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  transition: background .4s ease, color .4s ease;
}

/* 圆点网格背景 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--dot) 2px, transparent 2px);
  background-size: 26px 26px;
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3, .brand-name, .btn, .chip, kbd {
  font-family: 'Arial Black', 'Arial Bold', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-weight: 900;
  letter-spacing: .02em;
}

a { color: inherit; text-decoration: none; }
code {
  font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
  background: var(--c-yellow);
  color: var(--on-accent);
  padding: 1px 6px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  font-size: .9em;
}
kbd {
  display: inline-block;
  background: var(--paper);
  color: var(--text);
  border: 2px solid var(--ink);
  border-bottom-width: 4px;
  border-radius: 6px;
  padding: 0 7px;
  font-size: .8em;
}
.quiet { opacity: .65; font-size: .9em; }

/* ---------- 装饰层 ---------- */
.deco-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.deco {
  position: absolute;
  opacity: .85;
  will-change: transform;
  animation: float 11s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(var(--rot, 0deg)); }
  50%      { transform: translateY(-26px) rotate(calc(var(--rot, 0deg) + 12deg)); }
}
.spin-slow { animation: spin 26s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 光标拖尾 */
.cursor-trail { position: fixed; inset: 0; pointer-events: none; z-index: 60; }
.trail-dot {
  position: absolute;
  border: var(--bw) solid var(--ink);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: trail-pop .7s ease-out forwards;
}
@keyframes trail-pop {
  from { opacity: .95; scale: 1; }
  to   { opacity: 0; scale: .1; }
}
/* 点击纸屑 */
.confetti {
  position: fixed;
  z-index: 70;
  pointer-events: none;
  border: 2px solid var(--ink);
  animation: confetti-fly var(--dur, 1.1s) cubic-bezier(.2, .7, .3, 1) forwards;
}
@keyframes confetti-fly {
  0%   { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  100% { transform: translate(var(--dx), var(--dy)) rotate(var(--rz)); opacity: 0; }
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 22px;
  background: var(--bg);
  border-bottom: var(--bw) solid var(--ink);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-dot {
  width: 22px; height: 22px;
  background: var(--c-coral);
  border: var(--bw) solid var(--ink);
  border-radius: 50%;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { transform: scale(1.25) rotate(45deg); } }
.brand-name { font-size: 1.15rem; }
.nav { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.nav a {
  padding: 5px 13px;
  border: var(--bw) solid transparent;
  border-radius: 999px;
  font-weight: 700;
  font-size: .92rem;
  transition: transform .15s, background .15s, border-color .15s;
}
.nav a:hover {
  background: var(--c-yellow);
  color: var(--on-accent);
  border-color: var(--ink);
  transform: translateY(-2px) rotate(-2deg);
}
.tools { display: flex; gap: 8px; }
.icon-btn {
  width: 42px; height: 42px;
  padding: 0;
  display: grid; place-items: center;
  background: var(--paper);
  border: var(--bw) solid var(--ink);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
}
.icon-btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.icon-btn:active { transform: translate(3px, 3px); box-shadow: 0 0 0 var(--ink); }
.swatch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  /* 硬阴影朝右下，内容整体往左上挪 1px 视觉才算正中 */
  transform: translate(-1px, -1px);
}
.swatch i {
  width: 8px; height: 8px;
  flex: none;
  border: 2px solid var(--ink);
  border-radius: 50%;
  display: block;
}
.swatch i:nth-child(1) { background: var(--c-coral); }
.swatch i:nth-child(2) { background: var(--c-yellow); }
.swatch i:nth-child(3) { background: var(--c-teal); }

/* ---------- 通用区块 ---------- */
main { position: relative; z-index: 1; }
.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 62px 22px;
}
.section-title {
  font-size: clamp(1.6rem, 4.4vw, 2.6rem);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.title-chip {
  display: inline-grid;
  place-items: center;
  min-width: 56px;
  padding: 2px 12px;
  background: var(--c-coral);
  color: var(--paper); /* paper 在两个主题下都和 coral 形成对比 */
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  font-size: .95rem;
  transform: rotate(-3deg);
}
.section-sub { margin: 0 0 20px; opacity: .85; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  padding: 70px 22px 40px;
  min-height: 62vh;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
}
.hero-kicker {
  display: inline-block;
  margin: 0 0 6px;
  padding: 4px 14px;
  background: var(--c-teal);
  color: var(--on-accent);
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  font-weight: 800;
  transform: rotate(-2deg);
}
.hero-name {
  font-size: clamp(3.2rem, 13vw, 8.5rem);
  line-height: .95;
  margin: 8px 0 4px;
  display: flex;
  flex-wrap: wrap;
}
.hero-name span {
  display: inline-block;
  color: var(--c-yellow);
  -webkit-text-stroke: 3px var(--ink);
  paint-order: stroke fill; /* 描边压在填充下面，中文细笔画不会被吃掉 */
  animation: bounce-in .6s cubic-bezier(.2, 1.6, .4, 1) backwards;
}
@keyframes bounce-in {
  from { transform: translateY(60px) scale(.4) rotate(-20deg); opacity: 0; }
}
.hero-latin {
  margin: 0 0 14px;
  font-weight: 900;
  letter-spacing: .35em;
  font-size: .95rem;
  opacity: .6;
}
.hero-roles { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.role-chip {
  padding: 6px 16px;
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  background: var(--paper);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  font-weight: 800;
  font-size: .95rem;
}
/* 彩色底一律压深色字 */
.role-chip:nth-child(3n + 1) { background: var(--c-yellow); color: var(--on-accent); }
.role-chip:nth-child(3n + 2) { background: var(--c-blue); color: #fff; }
.role-chip:nth-child(3n + 3) { background: var(--c-pink); color: var(--on-accent); }
.hero-tagline { font-size: 1.15rem; max-width: 30em; margin: 0 0 26px; font-weight: 600; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-hint { margin-top: 22px; font-size: .85rem; opacity: .7; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border: var(--bw) solid var(--ink);
  border-radius: 14px;
  box-shadow: var(--shadow);
  font-size: 1rem;
  cursor: pointer;
  transition: transform .12s, box-shadow .12s;
}
.btn-primary { background: var(--c-yellow); color: var(--on-accent); }
.btn-ghost { background: var(--paper); color: var(--text); }
.btn:hover { transform: translate(-2px, -2px) rotate(-1.5deg); box-shadow: 9px 9px 0 var(--ink); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--ink); }

.hero-sticker { width: clamp(120px, 20vw, 220px); color: var(--c-purple); opacity: .75; }

/* ---------- 关于 ---------- */
.about-card {
  background: var(--paper);
  color: var(--text);
  border: var(--bw) solid var(--ink);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 26px 28px;
  font-size: 1.05rem;
  position: relative;
}
.about-card::after {
  content: '';
  position: absolute;
  right: -14px; top: -14px;
  width: 40px; height: 40px;
  background: var(--c-coral);
  border: var(--bw) solid var(--ink);
  border-radius: 50%;
}
.about-meta { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.about-meta li {
  padding: 5px 14px;
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 700;
  background: var(--bg);
  color: var(--text);
}

/* ---------- 筛选 ---------- */
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.chip {
  padding: 6px 16px;
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  background: var(--paper);
  color: var(--text);
  font-size: .88rem;
  cursor: pointer;
  transition: transform .15s, background .15s;
}
.chip:hover { transform: translateY(-2px); }
.chip[aria-pressed='true'] { background: var(--c-coral); color: #fff; }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 10px; top: 8px; bottom: 8px;
  width: 6px;
  background: repeating-linear-gradient(var(--ink) 0 14px, transparent 14px 26px);
}
.tl-item { position: relative; margin-bottom: 30px; opacity: 0; transform: translateY(28px); }
.tl-item.in { opacity: 1; transform: none; transition: opacity .5s ease, transform .5s cubic-bezier(.2, 1.2, .4, 1); }
.tl-item::before {
  content: '';
  position: absolute;
  left: -34px; top: 22px;
  width: 22px; height: 22px;
  background: var(--c-yellow);
  border: var(--bw) solid var(--ink);
  border-radius: 50%;
  z-index: 1;
}
.tl-card {
  background: var(--paper);
  color: var(--text);
  border: var(--bw) solid var(--ink);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 20px 24px;
  transition: transform .2s, box-shadow .2s;
}
.tl-card:hover { transform: translate(-3px, -3px) rotate(.6deg); box-shadow: 10px 10px 0 var(--ink); }

/* 机构标识：固定白底贴纸，logo 本身多为深色或透明底，白底在哪套配色下都读得清 */
.tl-top { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 16px; margin-bottom: 14px; }
.tl-toptext { flex: 1 1 220px; min-width: 0; }
.tl-logo {
  flex: none;
  display: grid;
  place-items: center;
  min-width: 78px;
  height: 78px;
  padding: 11px;
  background: #fff;
  border: var(--bw) solid var(--on-accent);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transform: rotate(-1.5deg);
  transition: transform .25s cubic-bezier(.2, 1.4, .4, 1);
}
.tl-card:hover .tl-logo { transform: rotate(1.5deg) scale(1.04); }
.tl-logo img { display: block; max-height: 46px; max-width: 210px; width: auto; height: auto; object-fit: contain; }
.tl-mono {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: 2px solid var(--on-accent);
  border-radius: 12px;
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--on-accent);
}

.tl-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.tl-org { font-size: 1.28rem; font-weight: 900; margin: 0; }
.tl-badge {
  padding: 3px 12px;
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 800;
  background: var(--c-teal);
  color: var(--on-accent);
}
.tl-badge[data-kind='work'] { background: var(--c-coral); color: #fff; }
.tl-badge[data-kind='edu'] { background: var(--c-blue); color: #fff; }
.tl-badge[data-kind='intern'] { background: var(--c-teal); }
.tl-badge[data-kind='project'] { background: var(--c-yellow); }
.tl-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: .9rem; opacity: .85; margin-bottom: 12px; }
.tl-role { font-weight: 800; }
.tl-points { margin: 0; padding: 0; list-style: none; }
.tl-points li { margin-bottom: 12px; }
.tl-points strong { display: block; font-size: 1rem; }
.tl-points strong::before { content: '▸ '; color: var(--c-coral); }
.tl-points p { margin: 3px 0 0; font-size: .95rem; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tl-tags span {
  font-size: .76rem;
  font-weight: 700;
  padding: 2px 10px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
}

/* ---------- 技能 ---------- */
.skills-wrap {
  display: grid;
  gap: 26px 34px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: start;
}
.skill-group h3 { margin: 0 0 12px; font-size: 1.1rem; }
.skill-group h3 span {
  padding: 3px 12px;
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  background: var(--c-purple);
  color: #fff;
  font-size: .9rem;
  transform: rotate(-1deg);
  display: inline-block;
}
.skill-list { display: flex; flex-wrap: wrap; gap: 12px; }
.badge {
  position: relative;
  padding: 9px 18px;
  border: var(--bw) solid var(--ink);
  border-radius: 14px;
  background: var(--paper);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  font-weight: 800;
  font-size: .95rem;
  cursor: pointer;
  transition: transform .18s, box-shadow .18s;
  font-family: 'Arial Black', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.badge:hover { transform: translate(-2px, -2px) rotate(-2deg); box-shadow: 7px 7px 0 var(--ink); }
.badge.pop { animation: badge-pop .45s cubic-bezier(.2, 1.7, .4, 1); }
@keyframes badge-pop {
  0% { transform: scale(1) rotate(0); }
  35% { transform: scale(1.25) rotate(-7deg); }
  70% { transform: scale(.92) rotate(5deg); }
  100% { transform: scale(1) rotate(0); }
}
.badge.on { background: var(--c-yellow); color: var(--on-accent); }
.badge .note {
  position: absolute;
  left: 50%; bottom: calc(100% + 10px);
  transform: translateX(-50%) translateY(6px);
  width: max-content;
  max-width: 240px;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 10px;
  font-family: inherit;
  font-weight: 600;
  font-size: .82rem;
  line-height: 1.5;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s, transform .18s;
  z-index: 5;
}
.badge .note::after {
  content: '';
  position: absolute;
  left: 50%; top: 100%;
  transform: translateX(-50%);
  border: 7px solid transparent;
  border-top-color: var(--ink);
}
.badge.on .note { opacity: 1; transform: translateX(-50%) translateY(0); }
.skills-tip { font-size: .88rem; opacity: .7; margin-top: 18px; }

/* ---------- 涂鸦墙（横向滑动，每屏一张大图） ---------- */
.doodle-carousel { position: relative; }

/* 工具条：说明文字左、随机按钮右（窄屏自动换行堆叠） */
.doodle-bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px 20px;
  flex-wrap: wrap;
  margin: 0 0 14px;
}
.doodle-bar .section-sub { margin: 0; flex: 1 1 340px; }
.dc-shuffle {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px 8px 12px;
  font: inherit;
  font-size: .9rem;
  font-weight: 800;
  background: var(--c-purple);
  color: var(--on-accent);
  border: var(--bw) solid var(--ink);
  border-radius: 999px;
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
  transition: transform .12s, box-shadow .12s;
}
.dc-shuffle svg { width: 18px; height: 18px; }
.dc-shuffle:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.dc-shuffle:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
/* 点一下让图标转半圈，给出「认真打乱过了」的反馈 */
.dc-shuffle.spin svg { animation: dc-spin .5s cubic-bezier(.3, 1.4, .5, 1); }
@keyframes dc-spin {
  from { transform: rotate(0deg) scale(1); }
  60%  { transform: rotate(200deg) scale(1.15); }
  to   { transform: rotate(180deg) scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .dc-shuffle.spin svg { animation: none; }
}

/* 轨道：横向滚动 + 吸附。负外边距让首尾卡片与标题对齐，留白由 padding 补回 */
.doodle-track {
  display: flex;
  align-items: flex-start;   /* 卡片按内容撑高，不要跟着轨道等高去拉伸图片 */
  gap: 26px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 16px 22px 30px;
  margin: -16px -22px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
  overscroll-behavior-x: contain;
  cursor: grab;
}
.doodle-track::-webkit-scrollbar { display: none; }
.doodle-track:focus-visible { outline: 3px dashed var(--ink); outline-offset: 4px; }

.doodle-card {
  flex: 0 0 100%;
  min-width: 0;
  /*
   * ⚠️ 必须清掉 <figure> 的浏览器默认 margin: 1em 40px。
   * 不清的话每张卡左右各多 40px，真实间距变成 卡片宽+40+gap+40 = 1142px，
   * 而 JS 里按「卡片宽 + gap = 1062px」当步长，每张差 80px 且**按张累加** ——
   * 第 7 张时算出 7.55，四舍五入成 8 ⇒ 点一下翻页按钮跳过两张。
   */
  margin: 0;
  position: relative;
  scroll-snap-align: center;
  padding: 12px 12px 44px;
  background: var(--paper);
  color: var(--text);
  border: var(--bw) solid var(--ink);
  border-radius: 14px;
  box-shadow: var(--shadow);
  transition: transform .25s cubic-bezier(.2, 1.3, .4, 1), box-shadow .25s;
  cursor: zoom-in;
  overflow: hidden;
}
.doodle-card:hover { transform: translateY(-4px); box-shadow: 10px 10px 0 var(--ink); }

/*
 * 图片：按原始比例铺满卡片宽度。
 * ⚠ 这里必须用 aspect-ratio 锁比例 —— flex 子项默认 flex-shrink:1，
 *   只写 height:auto 会被 flex 高度分配压成固定高度（曾因此把图纵向拉伸）。
 * object-fit: contain 兜住极端宽高比，绝不再裁切。
 */
.doodle-card img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(70vh, 640px);
  aspect-ratio: var(--ar, 4 / 3);
  object-fit: contain;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--bg);
}

/* 标题做成压在纸张底部的「手写标签」，不再是压住图片的细字 */
.doodle-card figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 10px;
  padding: 0 18px;
  text-align: center;
  font-size: .92rem;
  font-weight: 800;
  letter-spacing: .02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.doodle-card.no-cap { padding-bottom: 12px; }
.doodle-card.no-cap img { border-radius: 8px; }

.doodle-card .tape {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%) rotate(-4deg);
  width: 76px; height: 24px;
  background: color-mix(in srgb, var(--c-yellow) 80%, transparent);
  border: 2px solid var(--ink);
  opacity: .9;
  z-index: 2;
}

/* 左右大按钮 */
.dc-nav {
  position: absolute;
  top: 50%;
  z-index: 3;
  width: 56px; height: 56px;
  margin-top: -14px;
  display: grid;
  place-items: center;
  background: var(--c-yellow);
  color: var(--on-accent);
  border: var(--bw) solid var(--ink);
  border-radius: 50%;
  box-shadow: 4px 4px 0 var(--ink);
  cursor: pointer;
  transition: transform .15s, opacity .2s;
}
.dc-nav svg { width: 24px; height: 24px; }
.dc-nav:hover { transform: translateY(-2px); }
.dc-nav:active { transform: translate(3px, 3px); box-shadow: 0 0 0 var(--ink); }
.dc-nav[disabled] { opacity: 0; pointer-events: none; }
.dc-prev { left: -14px; }
.dc-next { right: -14px; }

/* 进度点 + 计数 */
.doodle-foot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.dc-dots { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
.dc-dot {
  width: 12px; height: 12px;
  padding: 0;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 50%;
  cursor: pointer;
  transition: transform .15s, background .15s;
}
.dc-dot:hover { transform: scale(1.2); }
/* 当前页做成一条小横杠，比圆点更容易一眼看出位置 */
.dc-dot[aria-selected='true'] { width: 30px; border-radius: 999px; background: var(--c-coral); }
.dc-count { font-size: .84rem; font-weight: 800; opacity: .7; font-variant-numeric: tabular-nums; }

/* 手机：按钮缩小并收进卡片内侧，避免压住作品 */
@media (max-width: 760px) {
  .doodle-track { gap: 18px; padding: 14px 16px 26px; margin: -14px -16px 0; }
  .dc-nav { width: 42px; height: 42px; margin-top: -10px; }
  .dc-nav svg { width: 18px; height: 18px; }
  /* 收进 16px 的轨道内边距里：既不越界裁掉，也不压住作品主体 */
  .dc-prev { left: 2px; }
  .dc-next { right: 2px; }
  /* 手机上一屏只有一张卡，图外留 14px 呼吸位，按钮落在这条缝里 */
  .doodle-card { padding: 8px 14px 36px; }
  .doodle-card figcaption { bottom: 6px; font-size: .82rem; padding: 0 10px; }
  .dc-dot { width: 10px; height: 10px; }
  .dc-dot[aria-selected='true'] { width: 24px; }
  .doodle-foot { gap: 10px; }
  .dc-count { margin-left: 4px; }
}

.doodle-empty {
  padding: 46px 20px;
  text-align: center;
  border: var(--bw) dashed var(--ink);
  border-radius: 18px;
}

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.contact-card {
  display: block;
  background: var(--paper);
  color: var(--on-accent); /* 三张卡都是彩底，统一压深色字 */
  border: var(--bw) solid var(--ink);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 22px;
  transition: transform .2s, box-shadow .2s;
}
.contact-card:hover { transform: translate(-3px, -3px) rotate(-1deg); box-shadow: 10px 10px 0 var(--ink); }
.contact-card .k { font-size: .82rem; font-weight: 800; opacity: .7; }
.contact-card .v { font-size: 1.08rem; font-weight: 800; word-break: break-all; }
.contact-card .ext {
  font-style: normal;
  font-size: .85em;
  opacity: .7;
  display: inline-block;
  transition: transform .2s;
}
.contact-card:hover .ext { transform: translate(3px, -3px); }
.contact-card:nth-child(1) { background: var(--c-yellow); }
.contact-card:nth-child(2) { background: var(--c-teal); }
.contact-card:nth-child(3) { background: var(--c-pink); }
.copy-flash {
  position: fixed;
  left: 50%; bottom: 34px;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--bg);
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  z-index: 80;
  animation: flash 2s ease forwards;
}
@keyframes flash {
  0% { opacity: 0; transform: translate(-50%, 20px); }
  15%, 75% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -10px); }
}

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  padding: 40px 22px 60px;
  border-top: var(--bw) solid var(--ink);
  background: var(--paper);
  position: relative;
  z-index: 1;
}
.footer p { margin: 4px 0; font-size: .88rem; }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: 40px;
  animation: lb-in .22s ease;
}
@keyframes lb-in { from { opacity: 0; } }
.lb-figure {
  margin: 0;
  max-width: min(860px, 92vw);
  text-align: center;
}
.lb-figure img {
  max-width: 100%;
  max-height: 74vh;
  border: var(--bw) solid var(--ink);
  border-radius: 14px;
  box-shadow: var(--shadow);
  background: var(--paper);
}
.lb-figure figcaption { margin-top: 12px; font-weight: 800; }
.lb-close, .lb-nav {
  position: absolute;
  width: 52px; height: 52px;
  display: grid; place-items: center;
  font-size: 1.6rem;
  font-weight: 900;
  background: var(--paper);
  border: var(--bw) solid var(--ink);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform .15s;
}
.lb-close { top: 24px; right: 24px; background: var(--c-coral); color: #fff; }
.lb-nav { top: 50%; transform: translateY(-50%); background: var(--c-yellow); color: var(--on-accent); }
.lb-prev { left: 22px; }
.lb-next { right: 22px; }
.lb-close:hover, .lb-nav:hover { scale: 1.1; }

/* ---------- 彩色块统一用深色描边 ----------
   深色主题下 --ink 是亮的（深底上要看得见），但这些元素本身是彩底的，
   边框必须反过来压深色，否则黄底配白边等于没边。浅色主题下两者同值，无影响。 */
.hero-kicker, .role-chip, .btn-primary, .title-chip, .tl-badge,
.chip[aria-pressed='true'], .badge.on, .contact-card,
.lb-close, .lb-nav, .about-card::after, .brand-dot,
.tl-item::before, .doodle-card .tape, .skill-group h3 span,
.nav a:hover, code {
  border-color: var(--on-accent);
}

/* ---------- 派对模式 ---------- */
body.party { animation: shake .5s ease-in-out infinite; }
@keyframes shake {
  0%, 100% { transform: translate(0, 0) rotate(0); }
  25% { transform: translate(-3px, 2px) rotate(-.4deg); }
  75% { transform: translate(3px, -2px) rotate(.4deg); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding-top: 46px; }
  .hero-sticker { display: none; }
  .topbar { flex-wrap: wrap; padding: 10px 14px; }
  .nav { order: 3; width: 100%; margin-left: 0; justify-content: flex-start; }
  .section { padding: 44px 16px; }
  .timeline { padding-left: 26px; }
  .tl-item::before { left: -26px; width: 18px; height: 18px; }
  .tl-top { gap: 12px; }
  .tl-logo { min-width: 64px; height: 64px; padding: 8px; border-radius: 14px; }
  .tl-logo img { max-height: 38px; max-width: 140px; }
  .tl-mono { width: 38px; height: 38px; font-size: 1.25rem; }
  .lightbox { padding: 16px; }
  .lb-nav { width: 44px; height: 44px; }
  .lb-prev { left: 8px; } .lb-next { right: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}