/* ============================================================
 *  微光 · Glimmer — 样式
 *  设计令牌集中于 :root，换肤只需改这里。
 * ============================================================ */

:root {
  /* ===== 颜色（默认主题 = aurora，可在 js/config.js 用 SITE.theme 切换） ===== */
  --bg: #0A0C16;
  --bg-soft: #10142a;
  --surface: rgba(255, 255, 255, 0.08);
  --surface-2: rgba(255, 255, 255, 0.12);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.22);
  --text: #ECEEF6;          /* 正文：高对比近白 */
  --muted: #9AA1B8;         /* 次要文字：提亮，保证可读 */
  --accent1: #5EEAD4;       /* 青 */
  --accent2: #A78BFA;       /* 紫 */
  --grad: linear-gradient(120deg, var(--accent1), var(--accent2));
  --danger: #FB7185;

  /* 背景特效 / 光晕用的 RGB 三元组（CSS 与 canvas 共用） */
  --aurora-a: 94,234,212;        /* ≈ accent1 */
  --aurora-b: 167,139,250;       /* ≈ accent2 */
  --veil-bottom-rgb: 10,12,22;   /* 页面底色（导航 / 底部遮罩） */
  --canvas-bg: 10,12,22;         /* canvas 拖尾底色 */
  --particle-near: #E2F7FF;      /* 近处粒子 */
  --particle-far: #97A8CE;       /* 远处粒子 */
  --glow: 94,234,212;            /* 鼠标光晕 */

  /* ===== 排版 ===== */
  --font-display: "Sora", "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular,
    Menlo, Consolas, monospace;

  /* ===== 尺度 ===== */
  --maxw: 1120px;
  --radius: 18px;
  --radius-sm: 10px;
  --nav-h: 64px;
}

/* 主题切换平滑过渡（仅在未要求减少动效时，避免眩晕） */
@media (prefers-reduced-motion: no-preference) {
  body, .nav, .nav.scrolled, .card, .chip, .btn, .search, .panel,
  .tagcloud, .archive__group, .about__card, .timeline__item,
  .markdown blockquote, .markdown code, .markdown pre, .bg-veil {
    transition: background-color .6s ease, color .6s ease,
                border-color .6s ease, box-shadow .6s ease;
  }
}

/* ============================================================
 *  主题切换：在 js/config.js 把 SITE.theme 改成下列任一值即可。
 *  每套主题完整覆盖颜色令牌，背景粒子也会自动跟随变色。
 *    aurora   （默认）深墨 + 青紫，已提升文字对比度
 *    midnight 深蓝 + 天蓝/靛，更柔和、长时间阅读不刺眼
 *    sepia    暖棕 + 琥珀/珊瑚，夜间最护眼
 *    forest   深绿 + 翠绿，自然安静
 *    paper    浅色主题，白底深字，可读性最强
 *    mono     灰度极简，去掉一切色彩干扰
 * ============================================================ */

[data-theme="midnight"] {
  --bg: #060A18;
  --bg-soft: #0C1226;
  --surface: rgba(255, 255, 255, 0.07);
  --surface-2: rgba(255, 255, 255, 0.11);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.20);
  --text: #E9EDF8;
  --muted: #99A2C0;
  --accent1: #7CC4FF;
  --accent2: #9A8BFF;
  --danger: #FF8BA0;
  --aurora-a: 124,196,255;
  --aurora-b: 154,139,255;
  --veil-bottom-rgb: 6,10,24;
  --canvas-bg: 6,10,24;
  --particle-near: #DCEBFF;
  --particle-far: #8FA0C8;
  --glow: 124,196,255;
}

[data-theme="sepia"] {
  --bg: #17110C;
  --bg-soft: #221913;
  --surface: rgba(255, 240, 222, 0.07);
  --surface-2: rgba(255, 240, 222, 0.11);
  --border: rgba(255, 235, 210, 0.14);
  --border-strong: rgba(255, 235, 210, 0.24);
  --text: #F3EADA;
  --muted: #BBA892;
  --accent1: #F0B36A;
  --accent2: #E58C7C;
  --danger: #F08A92;
  --aurora-a: 240,179,106;
  --aurora-b: 229,140,124;
  --veil-bottom-rgb: 23,17,12;
  --canvas-bg: 23,17,12;
  --particle-near: #FBEAD2;
  --particle-far: #B9A98F;
  --glow: 240,179,106;
}

[data-theme="forest"] {
  --bg: #06140F;
  --bg-soft: #0B2018;
  --surface: rgba(255, 255, 255, 0.07);
  --surface-2: rgba(255, 255, 255, 0.11);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.20);
  --text: #E6F2E9;
  --muted: #9DBBAE;
  --accent1: #5FE3B0;
  --accent2: #8FD9C4;
  --danger: #F2889B;
  --aurora-a: 95,227,176;
  --aurora-b: 143,217,196;
  --veil-bottom-rgb: 6,20,15;
  --canvas-bg: 6,20,15;
  --particle-near: #DAF7EC;
  --particle-far: #8FB6A6;
  --glow: 95,227,176;
}

[data-theme="paper"] {
  --bg: #F4F6FB;
  --bg-soft: #E9EDF5;
  --surface: rgba(255, 255, 255, 0.74);
  --surface-2: rgba(255, 255, 255, 0.94);
  --border: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(15, 23, 42, 0.22);
  --text: #1B2230;
  --muted: #56607A;
  --accent1: #0D9488;
  --accent2: #7C3AED;
  --danger: #E11D48;
  --aurora-a: 13,148,136;
  --aurora-b: 124,58,237;
  --veil-bottom-rgb: 244,246,251;
  --canvas-bg: 244,246,251;
  --particle-near: #2A3550;
  --particle-far: #AEB8CC;
  --glow: 13,148,136;
}

[data-theme="mono"] {
  --bg: #0D0E12;
  --bg-soft: #15161B;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.10);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.22);
  --text: #EDEEF2;
  --muted: #9A9CA6;
  --accent1: #C7CCD6;
  --accent2: #9AA0AE;
  --danger: #E08A98;
  --aurora-a: 199,204,214;
  --aurora-b: 154,160,174;
  --veil-bottom-rgb: 13,14,18;
  --canvas-bg: 13,14,18;
  --particle-near: #EDF0F5;
  --particle-far: #98A0B2;
  --glow: 199,204,214;
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(var(--aurora-b), 0.35); color: var(--text); }

/* 焦点可见性 */
:focus-visible {
  outline: 2px solid var(--accent1);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 背景层 ---------- */
.bg-veil {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 15% 0%, rgba(var(--aurora-a), 0.12), transparent 55%),
    radial-gradient(120% 90% at 85% 10%, rgba(var(--aurora-b), 0.14), transparent 55%),
    radial-gradient(100% 100% at 50% 120%, rgba(var(--veil-bottom-rgb), 0.92), transparent);
}
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: block;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 30;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 5vw, 48px);
  transition: background .35s ease, border-color .35s ease, backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(var(--veil-bottom-rgb), 0.72);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}
.nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .02em;
  display: inline-flex;
  align-items: baseline;
  gap: .35em;
}
.nav__brand-sep { color: var(--accent2); }
.nav__brand em {
  font-style: normal;
  font-weight: 500;
  font-size: .78rem;
  color: var(--muted);
  letter-spacing: .18em;
  text-transform: uppercase;
}
.nav__links { display: flex; gap: clamp(14px, 3vw, 34px); }
.nav__links a {
  position: relative;
  color: var(--muted);
  font-size: .95rem;
  padding: 6px 2px;
  transition: color .25s;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--grad);
  transition: right .3s ease;
}
.nav__links a:hover,
.nav__links a.active { color: var(--text); }
.nav__links a:hover::after,
.nav__links a.active::after { right: 0; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}
.nav__toggle span {
  width: 18px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

/* ---------- 阅读进度 ---------- */
.progress {
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  height: 3px;
  z-index: 29;
  background: transparent;
  opacity: 0;
  transition: opacity .3s;
}
.progress.show { opacity: 1; }
.progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(var(--aurora-a), .6);
}

/* ---------- 布局容器 ---------- */
.app { position: relative; z-index: 2; }
.wrap { width: min(100% - 32px, var(--maxw)); margin-inline: auto; }
.section { padding: clamp(40px, 8vw, 88px) 0; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--nav-h) 20px 0;
  position: relative;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .35em;
  text-transform: uppercase;
  color: var(--accent1);
  margin-bottom: 18px;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 9vw, 6rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 0;
  text-shadow: 0 2px 40px rgba(var(--veil-bottom-rgb), 0.6);
  transform: translateY(calc(var(--sy, 0) * 0.18 * 1px));
}
.hero__title .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__tagline {
  margin: 22px auto 0;
  max-width: 30ch;
  color: var(--muted);
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  transform: translateY(calc(var(--sy, 0) * 0.28 * 1px));
}
.hero__cta {
  margin-top: 38px;
  display: inline-flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  transform: translateY(calc(var(--sy, 0) * 0.34 * 1px));
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  transition: transform .25s, border-color .25s, background .25s;
}
.btn:hover { transform: translateY(-2px); border-color: var(--accent1); }
.btn--primary {
  background: var(--grad);
  color: #06121a;
  border: none;
  font-weight: 700;
}
.btn--primary:hover { box-shadow: 0 10px 30px rgba(var(--aurora-a), .25); }

.scroll-cue {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.scroll-cue::after {
  content: "";
  width: 1px; height: 38px;
  background: linear-gradient(var(--accent1), transparent);
  animation: cue 1.8s ease-in-out infinite;
}
@keyframes cue {
  0%, 100% { transform: scaleY(.4); opacity: .4; transform-origin: top; }
  50% { transform: scaleY(1); opacity: 1; transform-origin: top; }
}

/* ---------- 区块标题 ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 34px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin: 0;
  letter-spacing: -.01em;
}
.section-head p { margin: 0; color: var(--muted); font-size: .95rem; }

/* ---------- 文章网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: clamp(18px, 2.5vw, 26px);
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s cubic-bezier(.2,.7,.3,1), border-color .35s, box-shadow .35s;
  backdrop-filter: blur(6px);
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: 0 22px 50px -22px rgba(0, 0, 0, .8);
}
.card__cover {
  height: 150px;
  position: relative;
  overflow: hidden;
}
.card__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 120% at 80% 0%, rgba(255,255,255,.18), transparent 60%);
  opacity: 0;
  transition: opacity .4s;
}
.card:hover .card__cover::after { opacity: 1; }
.card__body {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 600;
  margin: 0;
  line-height: 1.3;
}
.card__summary {
  color: var(--muted);
  font-size: .92rem;
  margin: 0;
  flex: 1;
}
.card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: .8rem;
  color: var(--muted);
}
.card__date { font-family: var(--font-mono); }

/* ---------- 标签 chip ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: .8rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  transition: color .25s, border-color .25s, background .25s;
  cursor: pointer;
}
.chip::before {
  content: "#";
  color: var(--accent2);
  font-weight: 700;
}
.chip:hover,
.chip.active {
  color: var(--text);
  border-color: var(--accent1);
  background: var(--surface-2);
}
.chip--lg { font-size: .95rem; padding: 8px 16px; }

/* ---------- 详情页 ---------- */
.post {
  width: min(100% - 28px, 760px);
  margin: calc(var(--nav-h) + 40px) auto 60px;
}
.post__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: .9rem;
  margin-bottom: 22px;
  transition: color .25s, gap .25s;
}
.post__back:hover { color: var(--accent1); gap: 10px; }
.post__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 0 0 16px;
}
.post__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: .9rem;
  padding-bottom: 22px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border);
}
.post__meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--muted); }

/* Markdown 正文 */
.markdown { font-size: 1.05rem; }
.markdown h1, .markdown h2, .markdown h3 {
  font-family: var(--font-display);
  line-height: 1.25;
  margin: 1.8em 0 .6em;
  letter-spacing: -.01em;
}
.markdown h1 { font-size: 1.9rem; }
.markdown h2 {
  font-size: 1.5rem;
  padding-bottom: .3em;
  border-bottom: 1px solid var(--border);
}
.markdown h3 { font-size: 1.2rem; color: var(--text); }
.markdown p { margin: 1em 0; }
.markdown a {
  color: var(--accent1);
  border-bottom: 1px solid rgba(var(--aurora-a), .4);
}
.markdown a:hover { border-color: var(--accent1); }
.markdown ul, .markdown ol { padding-left: 1.3em; margin: 1em 0; }
.markdown li { margin: .4em 0; }
.markdown blockquote {
  margin: 1.4em 0;
  padding: 12px 20px;
  border-left: 3px solid var(--accent2);
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text);
}
.markdown blockquote p { margin: .3em 0; }
.markdown code {
  font-family: var(--font-mono);
  font-size: .9em;
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--accent1);
}
.markdown pre {
  margin: 1.4em 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: auto;
}
.markdown pre code {
  padding: 0;
  font-size: .88rem;
  line-height: 1.6;
}
.markdown img { border-radius: var(--radius-sm); margin: 1.2em 0; }
.markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
  font-size: .92rem;
  overflow: hidden;
  border-radius: var(--radius-sm);
}
.markdown th, .markdown td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.markdown th { background: var(--surface-2); font-family: var(--font-display); }
.markdown hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}
.post__footer {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
}
.post__footer .label { color: var(--muted); font-size: .85rem; margin-bottom: 10px; }

/* ---------- 标签云 / 筛选页 ---------- */
.tagcloud { display: flex; flex-wrap: wrap; gap: 12px; }
.tagcloud .chip { font-size: 1rem; padding: 8px 18px; }
.tagcloud .count {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--muted);
  margin-left: 2px;
}

/* ---------- 搜索框 ---------- */
.search {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  padding: 12px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  transition: border-color .3s, box-shadow .3s;
}
.search:focus-within {
  border-color: var(--accent1);
  box-shadow: 0 0 0 4px rgba(var(--aurora-a), .14);
}
.search__icon { width: 18px; height: 18px; color: var(--muted); flex: none; }
.search input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font-body);
  outline: none;
}
.search input::placeholder { color: var(--muted); }
.search input::-webkit-search-cancel-button { -webkit-appearance: none; }
.search__count {
  color: var(--muted);
  font-size: .82rem;
  font-family: var(--font-mono);
  white-space: nowrap;
  flex: none;
}

/* ---------- 归档（按月份） ---------- */
.archive { display: flex; flex-direction: column; gap: 14px; }
.archive__group {
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}
.archive__month {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.archive__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--grad);
  flex: none;
  transform: translateY(-1px);
}
.archive__cnt {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--muted);
  font-weight: 400;
}
.archive__list { list-style: none; margin: 0; padding: 0; }
.archive__list li { border-top: 1px solid var(--border); }
.archive__list li:first-child { border-top: none; }
.archive__list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 4px;
  transition: color .25s, padding-left .25s;
}
.archive__list a:hover { color: var(--accent1); padding-left: 10px; }
.archive__title { font-size: 1rem; }
.archive__date { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); flex: none; }

/* ---------- 关于页 ---------- */
.about {
  width: min(100% - 32px, var(--maxw));
  margin: calc(var(--nav-h) + 48px) auto 40px;
}
.about__hero {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 30px;
  align-items: center;
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}
.about__avatar {
  width: 140px; height: 140px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  box-shadow: 0 0 0 6px rgba(var(--aurora-a), .10);
}
.about__name { font-family: var(--font-display); font-size: 2rem; margin: 0; }
.about__handle { color: var(--accent1); font-family: var(--font-mono); font-size: .9rem; }
.about__bio { color: var(--muted); margin: 12px 0 0; max-width: 56ch; }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 26px;
}
.panel {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}
.panel h3 {
  font-family: var(--font-display);
  margin: 0 0 16px;
  font-size: 1.15rem;
}
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline li {
  position: relative;
  padding: 0 0 18px 22px;
  border-left: 1px solid var(--border);
}
.timeline li:last-child { border-left-color: transparent; padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -5px; top: 4px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--grad);
}
.timeline .yr { font-family: var(--font-mono); color: var(--accent1); font-size: .85rem; }
.timeline .tx { color: var(--muted); font-size: .92rem; }
.about__links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }

/* ---------- 空态 ---------- */
.empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--muted);
}
.empty h2 { font-family: var(--font-display); color: var(--text); margin: 0 0 8px; }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px 50px;
  color: var(--muted);
  font-size: .85rem;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
.footer .grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 滚动揭示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.3,1);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .nav__toggle { display: flex; }
  .nav__links {
    position: absolute;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(var(--veil-bottom-rgb), 0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s, opacity .3s;
  }
  .nav--open .nav__links { transform: none; opacity: 1; pointer-events: auto; }
  .nav__links a { padding: 14px clamp(16px, 5vw, 48px); }
  .nav__links a::after { display: none; }
  .nav--open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav--open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav--open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .about__hero { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .about__bio { margin-inline: auto; }
  .about__grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .post { margin-top: calc(var(--nav-h) + 20px); }
}

/* ---------- 降低动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .scroll-cue::after { animation: none; }
}