/* ==========================================================================
   安的角落 —— 前端样式
   配色沿用原来的 avocado 方案；动画参数（缓动曲线）取自参考站点：
     ease_out   = cubic-bezier(0.2, 0.9, 0.45, 1)
     ease_inout = cubic-bezier(0.7, 0, 0.3, 1)
   ========================================================================== */

/* ==========================================================================
   1. 设计变量
   ========================================================================== */
:root {
  --color_bg: #f4f2ec;
  --color_bg2: #ffffff;
  --color_fg: #1b1b1b;
  --color_mid: #d9d4c7;
  --color_theme: #568203;
  --color_dim: rgba(27, 27, 27, .55);
  --color_glass: rgba(255, 255, 255, .6);
  --color_glass_line: rgba(27, 27, 27, .12);
  --color_card: rgba(255, 255, 255, .72);
  --shadow_card: 0 18px 40px -26px rgba(0, 0, 0, .5);

  --border_s: 1px;
  --border_m: 2px;
  --radius: 6px;
  --nav_h: 4rem;
  --fold: 4rem;

  --margin_x: clamp(1.4rem, 4vw, 4rem);
  --margin_y: 1.5rem;

  --duration_xs: .2s;
  --duration_m: .3s;
  --duration_s: .5s;
  --ease_out: cubic-bezier(.2, .9, .45, 1);
  --ease_inout: cubic-bezier(.7, 0, .3, 1);

  --font_sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font_mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  color-scheme: light;
}

[data-theme="dark"] {
  --color_bg: #141414;
  --color_bg2: #1b1b1b;
  --color_fg: #f2f0ea;
  --color_mid: #3a3a37;
  --color_theme: #a3d13f;
  --color_dim: rgba(242, 240, 234, .5);
  --color_glass: rgba(26, 26, 26, .55);
  --color_glass_line: rgba(255, 255, 255, .12);
  --color_card: rgba(30, 30, 30, .7);
  --shadow_card: 0 18px 40px -26px rgba(0, 0, 0, .9);

  color-scheme: dark;
}

/* ==========================================================================
   2. 基础
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--color_bg);
  color: var(--color_fg);
  font-family: var(--font_sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color var(--duration_m) ease, color var(--duration_m) ease;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  border: 0;
}

code,
pre,
kbd {
  font-family: var(--font_mono);
}

/* 用自定义光标时隐藏系统光标 */
.js.has-cursor,
.js.has-cursor * {
  cursor: none !important;
}

/* 描边图标：光标吸附时会被“描”一遍，所以必须是 stroke 而非 fill */
.icon {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  overflow: visible;
  vector-effect: non-scaling-stroke;
}

/* 只给读屏和搜索引擎看，视觉上不存在 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   3. 布局骨架
   ========================================================================== */
.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--margin_x);
}

.page {
  padding-top: calc(var(--margin_y) + var(--nav_h) + clamp(2rem, 6vh, 4.5rem));
  padding-bottom: 4rem;
}

.section {
  margin-bottom: clamp(4rem, 10vh, 7rem);
}

.section_head {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin-bottom: 2rem;
  padding-bottom: .8rem;
  border-bottom: var(--border_s) solid var(--color_mid);
}

.section_head_icon {
  display: block;
  flex: 0 0 auto;
  width: 1.15rem;
  height: 1.15rem;
  color: var(--color_theme);
}

.section_head_title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .06em;
}

.section_head_rule {
  flex: 1 1 auto;
  height: var(--border_s);
  background-image: linear-gradient(90deg, var(--color_mid) 0 4px, transparent 4px 8px);
  background-size: 8px 100%;
  opacity: .9;
}

.section_head_num {
  font-family: var(--font_mono);
  font-size: .75rem;
  color: var(--color_dim);
  letter-spacing: .1em;
}

.section_lead {
  max-width: 46rem;
  margin: 0 0 2.5rem;
  color: var(--color_dim);
}

/* ==========================================================================
   4. 逐行遮罩显现（JS 打开时才生效，无 JS 时文字正常显示）
   ========================================================================== */
.js .reveal {
  overflow: hidden;
  padding-bottom: .08em;
  margin-bottom: -.08em;
}

.js .reveal > * {
  display: block;
  transform: translateY(115%);
}

/* ==========================================================================
   5. 状态栏（毛玻璃）
   ========================================================================== */
.nav {
  position: fixed;
  top: var(--margin_y);
  left: var(--margin_x);
  right: var(--margin_x);
  height: var(--nav_h);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: calc(var(--nav_h) + .9rem);
  padding-right: .45rem;
  border: var(--border_s) solid var(--color_glass_line);
  border-radius: var(--radius);
  background: var(--color_glass);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  backdrop-filter: blur(16px) saturate(180%);
  box-shadow: var(--shadow_card);
}

/* 收起状态：宽度为 0 的竖缝，从左侧张开（以头像为起点向右弹出）。
   只在开场那一页这样，之后的页面状态栏常驻。 */
.js.has-splash .nav {
  clip-path: polygon(0 0, 0 0, 0 100%, 0 100%);
}

.js.has-splash .nav.is-open {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.nav_items {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.nav_item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  height: calc(var(--nav_h) - 1rem);
  padding: 0 .95rem;
  border-radius: 4px;
  color: var(--color_fg);
  transition: background-color var(--duration_s) var(--ease_out),
    color var(--duration_s) var(--ease_out);
}

.nav_item_icon {
  display: block;
  flex: 0 0 auto;
  width: 1.1rem;
  height: 1.1rem;
}

.nav_item_label {
  display: block;
  overflow: hidden;
  padding-bottom: .06em;
  margin-bottom: -.06em;
  font-size: .9rem;
  letter-spacing: .04em;
}

.nav_item_label > span {
  display: block;
}

/* 收起时文字被藏起来这件事交给 GSAP 做（开场动画里逐行落下），
   这里不写死，避免和 GSAP 的 transform 叠加。 */

.nav_item.is-current {
  background-color: var(--color_fg);
  color: var(--color_bg);
}

@media (hover: hover) {
  .nav_item:hover {
    background-color: var(--color_fg);
    color: var(--color_bg);
  }
}

.nav_right {
  display: flex;
  align-items: center;
  height: 100%;
}

.nav_theme {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: calc(var(--nav_h) - 1.2rem);
  height: calc(var(--nav_h) - 1.2rem);
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--color_fg);
  transition: background-color var(--duration_s) var(--ease_out),
    color var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .nav_theme:hover {
    background-color: var(--color_fg);
    color: var(--color_bg);
  }
}

/* 太阳 / 月亮：两个图标都在，靠主题切换显示哪个 */
.nav_theme_icon--sun {
  display: none;
}

[data-theme="dark"] .nav_theme_icon--moon {
  display: none;
}

[data-theme="dark"] .nav_theme_icon--sun {
  display: block;
}

/* 头像：独立于 .nav，避免被 clip-path 一起裁掉 */
.nav_logo {
  position: fixed;
  top: var(--margin_y);
  left: var(--margin_x);
  z-index: 1001;
  display: block;
  width: var(--nav_h);
  height: var(--nav_h);
  overflow: hidden;
  border: var(--border_s) solid var(--color_glass_line);
  border-radius: 50%;
  background-color: var(--color_bg2);
  box-shadow: var(--shadow_card);
  will-change: transform;
}

.nav_logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 开场期间头像浮在开场层之上；去掉描边，放大时才不会变粗 */
.nav_logo.is-splash {
  z-index: 2100;
  border-color: transparent;
  box-shadow: none;
}

/* ==========================================================================
   6. 开场动画
   ========================================================================== */
.splash {
  --splash_size: min(52vmin, 32rem);
  --splash_avatar: calc(var(--splash_size) * .44);
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color_bg);
}

.js.has-splash .splash {
  display: flex;
}

.splash.is-done {
  display: none;
}

.splash_ring {
  position: absolute;
  width: var(--splash_size);
  height: var(--splash_size);
  fill: none;
  stroke: var(--color_mid);
  stroke-width: 1;
  opacity: 0;
  overflow: visible;
}

.splash_wavebox {
  position: absolute;
  width: calc(var(--splash_size) + 5rem);
  height: calc(var(--splash_size) + 5rem);
  pointer-events: none;
}

.splash_wave {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  transform: rotate(calc(1turn / var(--length) * var(--i)));
}

.splash_wave_line {
  position: relative;
  width: 2px;
  height: 2.4rem;
}

.splash_wave_line.is-hidden {
  transform: scaleY(0);
}

.splash_wave_bar {
  position: absolute;
  inset: 0;
  background-color: var(--color_fg);
  opacity: .85;
  transform: scaleY(var(--s));
  transition: transform var(--duration_m) var(--ease_inout);
}

/* 进度 ↔ 进入按钮：同一个 3rem 高的窗口里上下切换 */
.splash_middle {
  position: absolute;
  top: calc(50% + var(--splash_size) / 2 + 1.8rem);
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 2.4rem;
  overflow: hidden;
  transform: translateX(-50%);
}

.splash_progress,
.splash_button {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  height: 2.4rem;
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.splash_progress {
  justify-content: space-between;
  width: 11rem;
  font-family: var(--font_mono);
}

.splash_progress_label {
  margin: 0;
  color: var(--color_fg);
  opacity: .35;
}

.splash_progress_value {
  margin: 0;
  color: var(--color_fg);
}

.splash_button {
  gap: .7rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color_fg);
  letter-spacing: .2em;
}

.splash_button p {
  margin: 0;
}

.splash_button i {
  display: block;
  width: .9rem;
  height: var(--border_s);
  background-color: var(--color_fg);
  opacity: .4;
  transition: transform var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .splash_button:hover i:first-of-type {
    transform: translateX(-40%);
  }

  .splash_button:hover i:last-of-type {
    transform: translateX(40%);
  }
}

/* ==========================================================================
   7. 转场动画
   ========================================================================== */
.transition {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1500;
  pointer-events: none;
}

/* 新页面进场：先在 CSS 里就是「合上」的，避免首帧闪一下内容 */
.js.enter-transition .transition {
  display: block;
}

.transition.is-visible {
  display: block;
}

.transition.is-active {
  pointer-events: auto;
}

.transition_half {
  position: absolute;
  left: 0;
  width: 100%;
  height: 0;
  background-color: var(--color_bg2);
}

.js.enter-transition .transition_half {
  height: 50%;
}

.transition_half--top {
  top: 0;
}

.transition_half--bottom {
  bottom: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--fold)),
      calc(100% - var(--fold)) 100%, 0 100%);
}

.transition_fold {
  position: absolute;
  right: 0;
  bottom: 0;
  width: var(--fold);
  height: var(--fold);
  background-color: var(--color_bg);
  border-left: var(--border_s) solid var(--color_mid);
  border-top: var(--border_s) solid var(--color_mid);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  transform-origin: 100% 100%;
}

.transition_bars {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  height: 3.2rem;
  transform: translateY(-50%);
}

.transition_bar {
  width: 2px;
  height: 100%;
  background-color: var(--color_fg);
  opacity: .5;
  transform: scaleY(0);
}

.js.enter-transition .transition_bar {
  transform: scaleY(1);
}

/* ==========================================================================
   8. 磁力光标
   ========================================================================== */
.cursor {
  --w: 2.6rem;
  --h: 2.6rem;
  display: none;
  position: fixed;
  top: calc(var(--h) / -2);
  left: calc(var(--w) / -2);
  z-index: 9999;
  width: var(--w);
  height: var(--h);
  pointer-events: none;
  transition: width var(--duration_xs) var(--ease_out),
    height var(--duration_xs) var(--ease_out);
}

.js.has-cursor .cursor {
  display: block;
}

.cursor_corner {
  position: absolute;
  width: .5rem;
  height: .5rem;
  border: 1.5px solid var(--color_theme);
  transition: border-color var(--duration_xs) linear;
}

.cursor_corner:nth-child(1) {
  top: 0;
  left: 0;
  border-right: 0;
  border-bottom: 0;
}

.cursor_corner:nth-child(2) {
  top: 0;
  right: 0;
  border-left: 0;
  border-bottom: 0;
}

.cursor_corner:nth-child(3) {
  bottom: 0;
  left: 0;
  border-right: 0;
  border-top: 0;
}

.cursor_corner:nth-child(4) {
  right: 0;
  bottom: 0;
  border-left: 0;
  border-top: 0;
}

.cursor_label {
  position: absolute;
  left: 50%;
  top: calc(100% + .55rem);
  padding: .16rem .5rem;
  border-radius: 3px;
  background-color: var(--color_fg);
  color: var(--color_bg);
  font-size: .68rem;
  letter-spacing: .06em;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-50%);
}

/* ==========================================================================
   9. 主页 · 个人简介
   ========================================================================== */
.hero_grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.hero_eyebrow {
  margin: 0 0 .5rem;
  font-family: var(--font_mono);
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color_theme);
}

.hero_name {
  margin: 0 0 1.2rem;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -.02em;
}

.hero_tagline {
  margin: 0 0 1.6rem;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--color_fg);
}

.hero_bio {
  max-width: 40rem;
  margin-bottom: 2rem;
  color: var(--color_dim);
}

.hero_bio p {
  margin: 0 0 .9rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.chip {
  padding: .3rem .75rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 999px;
  font-size: .8rem;
  color: var(--color_dim);
}

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.social {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .9rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 4px;
  font-size: .85rem;
  transition: background-color var(--duration_s) var(--ease_out),
    color var(--duration_s) var(--ease_out),
    border-color var(--duration_s) var(--ease_out);
}

.social_icon {
  display: block;
  width: 1rem;
  height: 1rem;
}

@media (hover: hover) {
  .social:hover {
    background-color: var(--color_fg);
    border-color: var(--color_fg);
    color: var(--color_bg);
  }
}

.hero_facts {
  padding: 1.2rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: var(--radius);
  background-color: var(--color_card);
}

.hero_facts_title {
  margin: 0 0 1rem;
  font-family: var(--font_mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color_dim);
}

.facts {
  margin: 0;
}

.fact {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem 0;
  border-bottom: var(--border_s) dashed var(--color_mid);
  font-size: .88rem;
}

.fact:last-child {
  border-bottom: 0;
}

.fact dt {
  color: var(--color_dim);
}

.fact dd {
  margin: 0;
  font-weight: 600;
}

/* ==========================================================================
   10. 近期博客列表
   ========================================================================== */
.postlist {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border_s) solid var(--color_mid);
}

.postlist_item {
  border-bottom: var(--border_s) solid var(--color_mid);
}

.postlist_link {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.1rem .4rem;
  transition: padding-left var(--duration_s) var(--ease_out),
    background-color var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .postlist_link:hover {
    padding-left: 1.1rem;
    background-color: var(--color_card);
  }
}

.postlist_index {
  flex: 0 0 auto;
  font-family: var(--font_mono);
  font-size: .78rem;
  color: var(--color_theme);
}

.postlist_body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: .2rem;
  min-width: 0;
}

.postlist_title {
  font-size: 1.05rem;
  font-weight: 600;
}

.postlist_meta {
  display: flex;
  gap: .7rem;
  font-size: .78rem;
  color: var(--color_dim);
}

.postlist_meta em {
  font-style: normal;
  color: var(--color_theme);
}

.postlist_arrow {
  flex: 0 0 auto;
  width: 1.1rem;
  height: 1.1rem;
  color: var(--color_dim);
  transition: transform var(--duration_s) var(--ease_out),
    color var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .postlist_link:hover .postlist_arrow {
    transform: translateX(.4rem);
    color: var(--color_theme);
  }
}

.more {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-top: 1.6rem;
  padding: .55rem 1rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 4px;
  font-size: .85rem;
  transition: background-color var(--duration_s) var(--ease_out),
    color var(--duration_s) var(--ease_out),
    border-color var(--duration_s) var(--ease_out);
}

.more .icon {
  width: 1rem;
  height: 1rem;
}

@media (hover: hover) {
  .more:hover {
    background-color: var(--color_fg);
    border-color: var(--color_fg);
    color: var(--color_bg);
  }
}

/* ==========================================================================
   11. 比赛 · 横向滑动时间轴
   ========================================================================== */
.tl_wrap {
  position: relative;
  width: 100%;
}

.tl_sticky {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  height: 100vh;
  overflow: hidden;
}

.tl_track {
  display: flex;
  align-items: stretch;
  height: 62vh;
  will-change: transform;
}

.tl_items {
  position: relative;
  display: flex;
  align-items: stretch;
  height: 100%;
}

/* 轴线 */
.tl_items::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: var(--border_s);
  background-color: var(--color_mid);
}

.tl_item {
  position: relative;
  flex: 0 0 auto;
  width: 26rem;
  max-width: 78vw;
  padding: 0 1.4rem;
}

.tl_item_dot {
  position: absolute;
  top: 50%;
  left: 1.4rem;
  width: .7rem;
  height: .7rem;
  border-radius: 50%;
  background-color: var(--color_bg);
  box-shadow: 0 0 0 var(--border_m) var(--color_theme);
  transform: translateY(-50%);
}

.tl_item_date {
  position: absolute;
  top: calc(50% - 3.4rem);
  left: 1.4rem;
  font-family: var(--font_mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--color_theme);
}

/* 从圆点垂下来的引线 */
.tl_item::after {
  content: "";
  position: absolute;
  top: 50%;
  left: calc(1.4rem + .35rem);
  width: var(--border_s);
  height: 1.6rem;
  background-color: var(--color_mid);
}

.tl_item_card {
  position: absolute;
  top: calc(50% + 1.6rem);
  left: 1.4rem;
  display: flex;
  flex-direction: column;
  width: 23.2rem;
  max-width: calc(78vw - 2.8rem);
  padding: 1.1rem 1.2rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: var(--radius);
  background-color: var(--color_card);
  box-shadow: var(--shadow_card);
  transition: transform var(--duration_s) var(--ease_out),
    border-color var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .tl_item_card:hover {
    transform: translateY(-.4rem);
    border-color: var(--color_theme);
  }
}

.tl_item_type {
  align-self: flex-start;
  margin-bottom: .5rem;
  padding: .12rem .45rem;
  border-radius: 3px;
  background-color: var(--color_theme);
  color: var(--color_bg);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.tl_item_name {
  margin: 0 0 .5rem;
  font-size: 1.12rem;
  line-height: 1.3;
}

.tl_item_desc {
  margin: 0 0 1rem;
  font-size: .84rem;
  line-height: 1.6;
  color: var(--color_dim);
}

.tl_item_foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: .8rem;
  border-top: var(--border_s) dashed var(--color_mid);
  font-size: .8rem;
}

.tl_item_result {
  color: var(--color_dim);
}

.tl_item_link {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  color: var(--color_theme);
  font-weight: 600;
}

@media (hover: hover) {
  .tl_item_link:hover {
    text-decoration: underline;
  }
}

.tl_hint {
  position: absolute;
  bottom: 2.4rem;
  left: 0;
  display: flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--font_mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color_dim);
}

.tl_hint_arrows {
  display: flex;
  flex-direction: row;
  gap: .2rem;
}

.tl_hint_arrows i {
  display: block;
  width: .42rem;
  height: .42rem;
  border-top: var(--border_s) solid currentColor;
  border-right: var(--border_s) solid currentColor;
  transform: rotate(45deg);
  animation: tl_arrow 1.4s var(--ease_inout) infinite;
}

.tl_hint_arrows i:nth-child(2) {
  animation-delay: .15s;
}

.tl_hint_arrows i:nth-child(3) {
  animation-delay: .3s;
}

@keyframes tl_arrow {
  0% {
    opacity: 0;
    transform: translateX(-.3rem) rotate(45deg);
  }

  50% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateX(.3rem) rotate(45deg);
  }
}

.tl_progress {
  position: absolute;
  bottom: 2.9rem;
  left: 4.6rem;
  right: 0;
  height: var(--border_s);
  background-color: var(--color_mid);
}

.tl_progress span {
  display: block;
  width: 0;
  height: 100%;
  background-color: var(--color_theme);
}

/* ==========================================================================
   12. 友链 · canvas 无限滑动照片墙
   做法参考 008-02-infinite-scrolling-canvas：卡片按网格排布、拖动整体位移、
   越界整周期绕回。卡片内容（封面 + 头像 + 简介）画在 canvas 上。
   ========================================================================== */
.friendwall {
  position: relative;
  height: clamp(24rem, 62vh, 40rem);
  margin: 0 calc(var(--margin_x) * -1);
  overflow: hidden;
  border-top: var(--border_s) solid var(--color_mid);
  border-bottom: var(--border_s) solid var(--color_mid);
  background-color: var(--color_card);
  cursor: grab;
  touch-action: none;          /* 触屏上的拖动交给 JS，别让页面跟着滚 */
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.friendwall.is-dragging {
  cursor: grabbing;
}

.friendwall_canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.friendwall_hint {
  position: absolute;
  left: 50%;
  bottom: 1.1rem;
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .35rem .85rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 999px;
  background-color: var(--color_bg);
  color: var(--color_dim);
  font-size: .74rem;
  letter-spacing: .08em;
  transform: translateX(-50%);
  pointer-events: none;
  transition: opacity var(--duration_s) var(--ease_out);
}

.friendwall_hint_icon {
  display: block;
  width: .85rem;
  height: .85rem;
}

.friendwall_hint.is-hidden {
  opacity: 0;
}

/*
  退路：没有 JS、或 canvas 起不来时，退回成普通列表。
  默认显示，有 JS 才藏起来（.js 由 head 里的内联脚本加上）。
*/
.friendlist {
  display: block;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border_s) solid var(--color_mid);
}

.js .friendlist {
  display: none;
}

.js.no-friendwall .friendlist {
  display: block;
}

.friendlist_item {
  border-bottom: var(--border_s) solid var(--color_mid);
}

.friendlist_item a {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .9rem .4rem;
  transition: background-color var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .friendlist_item a:hover {
    background-color: var(--color_card);
  }
}

.friendlist_avatar {
  flex: 0 0 auto;
  width: 2.4rem;
  height: 2.4rem;
  overflow: hidden;
  border-radius: 50%;
  background-color: var(--color_bg2);
}

.friendlist_avatar img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.friendlist_text {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  min-width: 0;
}

.friendlist_name {
  font-weight: 600;
}

.friendlist_desc {
  font-size: .78rem;
  font-style: normal;
  color: var(--color_dim);
}

.friendlist_tag {
  flex: 0 0 auto;
  margin-left: auto;
  padding: .12rem .5rem;
  border-radius: 3px;
  background-color: var(--color_theme);
  color: var(--color_bg);
  font-size: .68rem;
}

/* ---------------- 整页模式：整页只留状态栏 ----------------
   友链页在 source/links/index.md 里写了 fullscreen: true，
   layout.ejs 会据此跳掉页脚，这里再把 .page 的内边距去掉，让墙铺满整屏。 */
.is-fullscreen .page {
  padding: 0;
}

.is-fullscreen .friendwall {
  height: 100dvh;
  margin: 0;
  border: 0;
  background-color: transparent;
  /* 全屏就不做两侧渐隐了 */
  -webkit-mask-image: none;
  mask-image: none;
}

/* 全屏模式下万一 canvas 起不来，退回的列表也得能看 */
.is-fullscreen .friendlist {
  padding: calc(var(--nav_h) + var(--margin_y) + 1.5rem) var(--margin_x) 3rem;
}

/* ==========================================================================
   13. 标签页
   ========================================================================== */
.tagcloud {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-bottom: 3.5rem;
}

.tagcloud_item {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .9rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 999px;
  font-size: .85rem;
  transition: background-color var(--duration_s) var(--ease_out),
    color var(--duration_s) var(--ease_out),
    border-color var(--duration_s) var(--ease_out);
}

.tagcloud_item .icon {
  width: .95rem;
  height: .95rem;
  color: var(--color_theme);
  transition: color var(--duration_s) var(--ease_out);
}

.tagcloud_count {
  font-family: var(--font_mono);
  font-size: .72rem;
  font-style: normal;
  color: var(--color_dim);
  transition: color var(--duration_s) var(--ease_out);
}

@media (hover: hover) {
  .tagcloud_item:hover {
    background-color: var(--color_fg);
    border-color: var(--color_fg);
    color: var(--color_bg);
  }

  .tagcloud_item:hover .icon,
  .tagcloud_item:hover .tagcloud_count {
    color: var(--color_bg);
  }
}

.taggroup {
  margin-bottom: 3rem;
  scroll-margin-top: 7rem;
}

.taggroup_title {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 1rem;
  font-size: 1.05rem;
}

.taggroup_title .icon {
  width: 1.05rem;
  height: 1.05rem;
  color: var(--color_theme);
}

.taggroup_title em {
  font-family: var(--font_mono);
  font-size: .74rem;
  font-style: normal;
  font-weight: 400;
  color: var(--color_dim);
}

/* ==========================================================================
   14. 文章页
   ========================================================================== */
.post {
  max-width: 760px;
}

.post_head {
  margin-bottom: 3rem;
  padding-bottom: 1.6rem;
  border-bottom: var(--border_s) solid var(--color_mid);
}

.post_head_date {
  margin: 0 0 .8rem;
  font-family: var(--font_mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--color_theme);
}

.post_head_title {
  margin: 0 0 1rem;
  font-size: clamp(1.8rem, 4.6vw, 2.7rem);
  line-height: 1.2;
  letter-spacing: -.01em;
}

.post_head_tag {
  margin: 0;
}

.tagpill {
  display: inline-block;
  padding: .22rem .7rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 999px;
  font-size: .76rem;
  color: var(--color_dim);
}

.post_body {
  font-size: 1.06rem;
  line-height: 1.85;
}

.post_body h1,
.post_body h2,
.post_body h3,
.post_body h4 {
  margin: 2.4rem 0 1rem;
  line-height: 1.35;
}

.post_body h2 {
  padding-bottom: .5rem;
  border-bottom: var(--border_s) solid var(--color_mid);
  font-size: 1.5rem;
}

.post_body h3 {
  font-size: 1.2rem;
}

.post_body p {
  margin: 0 0 1.2rem;
}

.post_body ul,
.post_body ol {
  margin: 0 0 1.2rem;
  padding-left: 1.5rem;
}

.post_body li {
  margin-bottom: .4rem;
}

.post_body img {
  display: block;
  margin: 1.6rem auto;
  border: var(--border_s) solid var(--color_mid);
  border-radius: var(--radius);
}

.post_body blockquote {
  margin: 1.6rem 0;
  padding: .2rem 0 .2rem 1.2rem;
  border-left: var(--border_m) solid var(--color_theme);
  color: var(--color_dim);
}

.post_body blockquote p:last-child {
  margin-bottom: 0;
}

.post_body a {
  color: var(--color_theme);
  text-decoration: underline;
  text-underline-offset: .2em;
}

.post_body hr {
  height: 1.5rem;
  margin: 2.4rem 0;
  border: 0;
  background: url(/images/eagle.png) center center no-repeat;
  opacity: .5;
}

.post_body table {
  width: 100%;
  margin: 1.6rem 0;
  border-collapse: collapse;
  font-size: .9rem;
}

.post_body th,
.post_body td {
  padding: .5rem .7rem;
  border: var(--border_s) solid var(--color_mid);
  text-align: left;
}

.post_body thead th {
  background-color: var(--color_card);
}

.post_body p code,
.post_body li code {
  padding: .1rem .35rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: 3px;
  background-color: var(--color_card);
  font-size: .86em;
  white-space: nowrap;
}

/* 代码块：沿用 Monokai 配色，两种主题下都保持深色。
   Hexo 用内置的 Prism，输出是 <pre class="language-x"><code>…</code></pre>，
   token 的具体颜色在 syntax.css 里。 */
.post_body pre {
  margin: 1.6rem 0;
  padding: 1.1rem 1.2rem;
  overflow-x: auto;
  border-radius: var(--radius);
  background-color: #272822;
  color: #f8f8f2;
  line-height: 1.65;
}

.post_body pre code {
  padding: 0;
  border: 0;
  background: none;
  font-size: .86rem;
  white-space: pre;
  color: inherit;
}

.post_nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: var(--border_s) solid var(--color_mid);
}

.post_nav_item {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: .9rem 1rem;
  border: var(--border_s) solid var(--color_mid);
  border-radius: var(--radius);
  transition: border-color var(--duration_s) var(--ease_out),
    background-color var(--duration_s) var(--ease_out);
}

.post_nav_item--next {
  text-align: right;
}

@media (hover: hover) {
  .post_nav_item:hover {
    border-color: var(--color_theme);
    background-color: var(--color_card);
  }
}

.post_nav_label {
  font-family: var(--font_mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--color_theme);
}

.post_nav_title {
  font-size: .92rem;
  font-weight: 600;
}

.post_back {
  margin-top: 2rem;
}

.post_back a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  color: var(--color_dim);
}

.post_back .icon {
  width: 1rem;
  height: 1rem;
  transform: rotate(180deg);
}

@media (hover: hover) {
  .post_back a:hover {
    color: var(--color_theme);
  }
}

/* ==========================================================================
   15. 404
   ========================================================================== */
.notfound {
  padding: 4rem 0 6rem;
  text-align: center;
}

.notfound_code {
  margin: 0;
  font-family: var(--font_mono);
  font-size: clamp(5rem, 18vw, 10rem);
  line-height: 1;
  color: var(--color_mid);
}

.notfound_title {
  margin: 1rem 0 1rem;
  font-size: clamp(1.4rem, 4vw, 2rem);
}

.notfound_desc {
  margin: 0 0 2rem;
  color: var(--color_dim);
}

/* ==========================================================================
   16. 页脚
   ========================================================================== */
.site_footer {
  padding: 2rem var(--margin_x) 3rem;
  border-top: var(--border_s) solid var(--color_mid);
  text-align: center;
  font-size: .78rem;
  color: var(--color_dim);
}

.site_footer p {
  margin: 0 0 .3rem;
}

.site_footer a {
  color: var(--color_dim);
  text-decoration: underline;
  text-underline-offset: .2em;
}

@media (hover: hover) {
  .site_footer a:hover {
    color: var(--color_theme);
  }
}

/* ==========================================================================
   17. 响应式
   ========================================================================== */
@media screen and (max-width: 820px) {
  .hero_grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero_facts {
    max-width: 22rem;
  }
}

@media screen and (max-width: 640px) {
  :root {
    --nav_h: 3.4rem;
  }

  .nav_item {
    gap: .4rem;
    padding: 0 .6rem;
  }

  .nav_item_label {
    font-size: .82rem;
  }

  .tl_track {
    height: 66vh;
  }

  .tl_item {
    width: 20rem;
  }

  .tl_item_card {
    width: 17.2rem;
  }

  .tl_hint {
    bottom: 1.6rem;
  }

  .tl_progress {
    left: 0;
    bottom: 2.1rem;
  }
}

/* 触屏没有磁力光标，直接关掉 */
@media (hover: none), (pointer: coarse) {

  .js.has-cursor,
  .js.has-cursor * {
    cursor: auto !important;
  }

  .cursor {
    display: none !important;
  }
}

/* ==========================================================================
   18. 尊重“减少动态效果”
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .js .reveal > * {
    transform: none !important;
  }

  .js.has-splash .nav,
  .js.has-splash .nav.is-open {
    clip-path: none !important;
  }

  .splash,
  .transition,
  .cursor {
    display: none !important;
  }
}