/* HuanSoft 全站样式：社区刊物风格。
   暖纸底色 + 宋楷标题 + 朱红单色强调 + 发丝规则线；不用卡片盒、圆角、投影与装饰性动效。
   交互与数据契约保持不变：主题切换、移动端菜单、二维码弹窗、项目/团队渲染、终端打字机。 */

/* 自托管字体：正文用系统人文无衬线，标题用霞鹜文楷（失败时回退到系统楷/宋）
   此处为按当前站点文案生成的子集；日后新增文案若出现缺字，会自动回退到系统楷/宋。 */
@font-face {
  font-family: 'LXGW WenKai';
  src: url('assets/ttfs/LXGWWenKai/LXGWWenKai-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/ttfs/JetBrainsMono/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/ttfs/JetBrainsMono/JetBrainsMono-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ── 设计令牌 ───────────────────────────────────────────── */

:root {
  color-scheme: light;

  /* 纸张与墨色 */
  --paper: #F2EEE3;
  --paper-2: #EAE4D5;
  --paper-3: #E3DCCB;
  --ink: #1C1A16;
  --ink-2: #514B3F;
  --ink-3: #6B6455;

  /* 规则线 */
  --rule: #D2C8B4;
  --rule-2: #BFB4A0;
  --rule-soft: #E0D8C7;

  /* 单色强调：朱红 */
  --accent: #B23A2A;
  --accent-hover: #8E2B1E;
  --accent-soft: #EFDFD9;

  /* 语义色（仅用于状态点与少量图标） */
  --green: #3F6B4F;
  --amber: #9A6B22;
  --red: #B23A2A;
  --olive: #5F6248;

  --on-accent: #FBF7ED;
  --overlay: rgba(24, 21, 16, 0.64);

  /* 字体 */
  --font-display: "LXGW WenKai", "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --font-body: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  /* 版式节奏 */
  --container: 1120px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --section-y: clamp(4rem, 8vw, 7rem);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.25s;

  /* 兼容旧页面内联样式与脚本可能引用的变量名 */
  --bg: var(--paper);
  --surface: var(--paper);
  --surface-2: var(--paper-2);
  --line: var(--rule);
  --line-2: var(--rule-2);
  --card-line: var(--rule);
  --green-soft: transparent;
  --amber-soft: transparent;
  --red-soft: transparent;
}

[data-theme="dark"] {
  color-scheme: dark;

  --paper: #171512;
  --paper-2: #1E1B16;
  --paper-3: #252119;
  --ink: #EDE6D7;
  --ink-2: #C4BCAA;
  --ink-3: #9C9585;

  --rule: #353027;
  --rule-2: #4A4337;
  --rule-soft: #2A261F;

  --accent: #E1735C;
  --accent-hover: #F0907A;
  --accent-soft: #2C1E1A;

  --green: #7FB08A;
  --amber: #D9A34A;
  --red: #E1735C;
  --olive: #A6AA8A;

  --on-accent: #1A1512;
  --overlay: rgba(6, 5, 4, 0.72);
}

/* ── 基础 ──────────────────────────────────────────────── */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-kerning: normal;
  overflow-x: hidden;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

/* 纸张颗粒：置于内容之下，只给底色加一点手感，不覆盖文字与图片 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  background-size: 160px 160px;
}

body > * {
  position: relative;
  z-index: 1;
}

[data-theme="dark"] body::before {
  opacity: 0.035;
  mix-blend-mode: screen;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.005em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 0.05em;
  text-underline-offset: 0.2em;
  text-decoration-color: var(--rule-2);
  transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease);
}
a:hover {
  color: var(--accent-hover);
  text-decoration-color: currentColor;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

code,
pre,
.mono {
  font-family: var(--font-mono);
}

code {
  font-size: 0.9em;
}

strong {
  color: var(--ink);
  font-weight: 600;
}

::selection {
  background: var(--accent-soft);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

main#main {
  display: block;
}

/* 跳转正文 */
a.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10000;
  padding: 0.5rem 0.85rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}
a.skip-link:focus,
a.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--paper);
}

/* ── 布局 ──────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

main > .section + .section {
  border-top: 1px solid var(--rule-soft);
}

.section > .container {
  position: relative;
  z-index: 1;
}

/* 滚动淡入（.visible 由 JS 添加） */
.fade-in {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ── 按钮 ──────────────────────────────────────────────── */

.btn,
.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.68rem 1.05rem;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.btn i,
.btn-primary i,
.btn-outline i {
  font-size: 0.86em;
  opacity: 0.9;
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
}

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-2);
}
.btn-outline:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.btn:active,
.btn-primary:active,
.btn-outline:active {
  opacity: 0.88;
}

.btn.disabled,
.btn-outline.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── 导航 ──────────────────────────────────────────────── */

.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 70px;
  padding-block: 0.55rem;
  padding-inline: max(var(--gutter), calc((100% - var(--container)) / 2 + var(--gutter)));
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
/* 刊头双线 */
.navbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--rule-soft);
  pointer-events: none;
}
.navbar.scrolled {
  border-bottom-color: var(--ink);
}

.navbar .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex: none;
  color: var(--ink);
  text-decoration: none;
}
.navbar .logo:hover {
  color: var(--ink);
}
.navbar .logo .logo-icon {
  position: static;
  isolation: auto;
  width: 30px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  clip-path: none;
}
.navbar .logo .logo-icon::before {
  display: none;
}
.navbar .logo .logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
[data-theme="dark"] .navbar .logo .logo-icon img {
  filter: invert(1);
}
.navbar .logo .brand-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1;
  letter-spacing: 0.01em;
}

.navbar .nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin-left: auto;
}
.navbar .nav-links li {
  display: flex;
  align-items: center;
}
.navbar .nav-links a {
  position: relative;
  display: block;
  padding: 0.5rem 0.65rem;
  color: var(--ink-2);
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
}
.navbar .nav-links a::after {
  content: "";
  position: absolute;
  left: 0.65rem;
  right: 0.65rem;
  bottom: 0.12rem;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.navbar .nav-links a:hover {
  color: var(--ink);
}
.navbar .nav-links a.active {
  color: var(--accent);
}
.navbar .nav-links a:hover::after,
.navbar .nav-links a.active::after {
  transform: scaleX(1);
}

.theme-toggle {
  width: 32px;
  height: 32px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 0.5rem;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--rule);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.theme-toggle i {
  font-size: 0.86rem;
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 34px;
  height: 32px;
  flex: none;
  margin-left: auto;
  border: 1px solid var(--rule);
}
.hamburger span {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--ink);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.navbar:has(.nav-links.open) .hamburger span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.navbar:has(.nav-links.open) .hamburger span:nth-child(2) {
  opacity: 0;
}
.navbar:has(.nav-links.open) .hamburger span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── 首页 Hero ─────────────────────────────────────────── */

.hero {
  position: relative;
  padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
}

.hero .hero-inner {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(1rem, 2.4vw, 2rem);
  row-gap: 1.25rem;
  align-items: start;
}
.hero-copy {
  display: contents;
}

.hero-eyebrow {
  grid-column: 1 / -1;
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hero-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--accent);
}

.hero-title {
  grid-column: 1 / -1;
  grid-row: 2;
  margin: 0;
  font-size: clamp(2.75rem, 7.3vw, 5.9rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

.hero-subtitle {
  grid-column: 1 / 8;
  grid-row: 3;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.8rem);
  line-height: 1.55;
  color: var(--ink);
  text-wrap: balance;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.hero-tagline {
  grid-column: 1 / 8;
  grid-row: 4;
  max-width: 72ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.96rem;
  line-height: 1.95;
}
@media (min-width: 621px) {
  .hero-tagline {
    word-break: keep-all;
    overflow-wrap: anywhere;
  }
}

.hero-actions {
  grid-column: 1 / 8;
  grid-row: 5;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.hero-stats {
  grid-column: 1 / 8;
  grid-row: 6;
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2.2rem;
  margin-top: 0.75rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--ink);
}
.hero-stats .stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.hero-stats .stat-num {
  font-family: var(--font-display);
  font-size: 1.65rem;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.hero-stats .stat-label {
  color: var(--ink-3);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.hero-visual {
  grid-column: 8 / -1;
  grid-row: 3 / 7;
  align-self: start;
  min-width: 0;
}

/* 终端不再伪装成窗口，改成一块朴素的转录稿 */
.terminal-card {
  position: relative;
  width: 100%;
  max-width: none;
  margin: 0;
  background: transparent;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  clip-path: none;
  overflow: visible;
}
.terminal-card::before {
  display: none;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: auto;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--rule);
}
.terminal-dots {
  display: none;
}
.terminal-title {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}
.terminal-title::before {
  content: "▸";
  margin-right: 0.45rem;
  color: var(--accent);
}
.terminal-body {
  position: relative;
  padding: 1rem 0 1.2rem;
  line-height: 1.9;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.terminal-body::after {
  display: none;
}
.t-prompt {
  color: var(--accent);
}
.t-cmd {
  color: var(--ink);
}
.t-out {
  color: var(--ink-3);
}
.t-repo {
  color: var(--ink);
}

.terminal-cursor {
  display: inline-block;
  width: 6px;
  height: 1em;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: terminalBlink 1.1s steps(2, start) infinite;
}
@keyframes terminalBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* 首页入场：轻微上浮，无闪烁与干扰 */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.hero-copy > * {
  animation: rise 0.65s var(--ease) both;
}
.hero-copy > *:nth-child(2) { animation-delay: 0.04s; }
.hero-copy > *:nth-child(3) { animation-delay: 0.08s; }
.hero-copy > *:nth-child(4) { animation-delay: 0.12s; }
.hero-copy > *:nth-child(5) { animation-delay: 0.16s; }
.hero-copy > *:nth-child(6) { animation-delay: 0.2s; }
.hero-visual {
  animation: rise 0.7s var(--ease) 0.18s both;
}

/* ── 区块标题 ──────────────────────────────────────────── */

.section-head {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) auto;
  align-items: start;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--ink);
  text-align: left;
}
.sec-index {
  padding-top: 0.5rem;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
}
.sec-body {
  min-width: 0;
}
.section-title {
  margin: 0;
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  line-height: 1.2;
}
.section-title .highlight,
.about-content .highlight {
  color: var(--accent);
}
.section-desc {
  max-width: 62ch;
  margin-top: 0.45rem;
  color: var(--ink-2);
  font-size: 0.92rem;
  line-height: 1.9;
}
.sec-link {
  align-self: start;
  margin-top: 0.45rem;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid currentColor;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
}
.sec-link:hover {
  color: var(--accent-hover);
}

/* ── 卡片基底：去掉盒体，只留内容 ─────────────────────── */

.card {
  position: relative;
  filter: none;
  transition: none;
}
.card:hover {
  filter: none;
}
.card-skin {
  position: relative;
  min-height: 0;
  padding: 0;
  background: none;
  clip-path: none;
  overflow: visible;
  backface-visibility: visible;
}
.card-skin::before,
.card-skin::after {
  display: none;
}

/* 首页三栏理念 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 3.5rem);
}
.feature-card .card-skin {
  padding-top: 1.35rem;
  border-top: 1px solid var(--ink);
}
.feature-card:hover .card-skin {
  border-top-color: var(--accent);
}
.card-icon {
  width: auto;
  height: auto;
  display: block;
  margin: 0 0 1.1rem;
  padding: 0;
  background: none;
  clip-path: none;
  color: var(--accent);
  font-size: 1.2rem;
}
.feature-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.28rem;
}
.feature-card p {
  max-width: 36ch;
  color: var(--ink-2);
  font-size: 0.92rem;
  line-height: 1.95;
}

/* ── 项目卡 ────────────────────────────────────────────── */

.card-grid {
  display: grid;
}

#featuredGrid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 3rem);
}
#featuredGrid .project-card .card-skin {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding-top: 1.2rem;
  border-top: 1px solid var(--ink);
}
#featuredGrid .project-card:hover .card-skin {
  border-top-color: var(--accent);
}
#featuredGrid .repo-desc {
  margin: 0.65rem 0 0;
}
#featuredGrid .repo-tags {
  margin-top: auto;
  margin-bottom: 0.9rem;
}
#featuredGrid .repo-foot {
  margin-top: 0;
}
#featuredGrid .card-details,
#featuredGrid .card-link {
  display: none;
}

.repo-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.repo-name {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  word-break: break-word;
}
.repo-open {
  flex: none;
  margin-left: auto;
  padding: 0 0 0.1rem;
  border-bottom: 1px solid currentColor;
  background: none;
  clip-path: none;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
}
.repo-open::before {
  display: none;
}
.repo-open:hover {
  color: var(--accent-hover);
}
.repo-desc {
  margin: 0.7rem 0 0;
  color: var(--ink-2);
  font-size: 0.92rem;
  line-height: 1.9;
}
.card-tags,
.repo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  margin: 0.85rem 0 0;
}
.tag-pill {
  display: inline-block;
  padding: 0;
  background: none;
  clip-path: none;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.01em;
}
.tag-pill::before {
  content: "[";
}
.tag-pill::after {
  content: "]";
}
.card-stars,
.repo-foot {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 0.9rem 0 0;
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}
.card-stars i {
  font-size: 0.72rem;
}
.card-stars i.fa-star {
  color: var(--accent);
}
.card-stars i.fa-code-branch {
  color: var(--ink-3);
}
.card-stars .stat-stars,
.card-stars .stat-forks {
  color: var(--ink-3);
}
.card-date {
  margin-left: auto;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}
.card-details {
  margin: 1rem 0 0;
  color: var(--ink-2);
  font-size: 0.87rem;
  line-height: 1.95;
}
.card-details strong {
  color: var(--ink);
  font-weight: 600;
}
.card-details code {
  padding: 0.02em 0.3em;
  border: 1px solid var(--rule-soft);
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.88em;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  width: fit-content;
  margin-top: 1rem;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid currentColor;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
}
.card-link:hover {
  color: var(--accent-hover);
}

/* 项目列表页：目录式条目，而不是九宫格卡片 */
.card-grid:not(#featuredGrid) {
  display: block;
  border-top: 1px solid var(--ink);
  counter-reset: project;
}
.card-grid:not(#featuredGrid) .project-card {
  border-bottom: 1px solid var(--rule);
}
.card-grid:not(#featuredGrid) .card-skin {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
  grid-template-areas:
    "head desc"
    "tags desc"
    "foot details"
    "foot link";
  grid-template-rows: auto auto auto auto;
  column-gap: clamp(2rem, 5vw, 4.5rem);
  padding: 2rem 0 2.2rem;
}
.card-grid:not(#featuredGrid) .repo-head {
  grid-area: head;
  align-items: flex-start;
}
.card-grid:not(#featuredGrid) .repo-desc {
  grid-area: desc;
  margin-top: 0;
  font-size: 0.95rem;
}
.card-grid:not(#featuredGrid) .repo-tags {
  grid-area: tags;
}
.card-grid:not(#featuredGrid) .repo-foot {
  grid-area: foot;
  margin-top: 0.8rem;
  align-self: start;
}
.card-grid:not(#featuredGrid) .card-details {
  grid-area: details;
  margin-top: 1rem;
}
.card-grid:not(#featuredGrid) .card-link {
  grid-area: link;
  margin-top: 0.9rem;
}
.card-grid:not(#featuredGrid) .repo-open {
  display: none;
}
.card-grid:not(#featuredGrid) .project-card:not(.is-placeholder) .repo-head::before {
  counter-increment: project;
  content: counter(project, decimal-leading-zero);
  display: inline-block;
  margin-right: 0.55rem;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

/* 占位条目 */
.project-card.is-placeholder {
  opacity: 1;
}
.project-card.is-placeholder .card-skin {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  padding: 1.5rem 0;
}
.project-card.is-placeholder h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
}
.project-card.is-placeholder p {
  color: var(--ink-3);
  font-size: 0.85rem;
}
.project-card.is-placeholder .repo-tags {
  margin: 0;
}
.project-card.is-placeholder .repo-foot {
  display: none;
}
.project-card.is-placeholder .card-placeholder {
  padding: 0;
  background: none;
  clip-path: none;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}
.project-card.is-placeholder > .card-skin > .card-placeholder {
  margin-left: auto;
}
.project-card.is-placeholder > .card-skin > .card-placeholder::before {
  display: none;
}
.card-grid:not(#featuredGrid) .project-card.is-placeholder ~ .project-card.is-placeholder {
  display: none;
}

/* ── 团队：贡献者名录 ──────────────────────────────────── */

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(1.5rem, 4vw, 3rem);
}
.member-card {
  border-top: 1px solid var(--rule);
}
.member-card .card-skin {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "avatar name social"
    "avatar role social";
  align-items: center;
  column-gap: 0.85rem;
  padding: 1rem 0 1.15rem;
  text-align: left;
}
.avatar-frame {
  grid-area: avatar;
  position: relative;
  isolation: auto;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  background: none;
  clip-path: none;
  border-radius: 50%;
  overflow: hidden;
}
.avatar-frame::before {
  display: none;
}
.avatar-frame .avatar {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  object-fit: cover;
  border-radius: 50%;
  background: var(--paper-2);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  clip-path: none;
}
.avatar-frame .avatar.initials {
  background: var(--accent-soft);
  color: var(--accent);
}
.member-name {
  grid-area: name;
  align-self: end;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.4;
}
.member-role {
  grid-area: role;
  align-self: start;
  margin: 0;
  color: var(--ink-3);
  font-size: 0.72rem;
  line-height: 1.5;
}
.member-social {
  grid-area: social;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}
.member-social a {
  color: var(--ink-3);
  font-size: 0.9rem;
  text-decoration: none;
}
.member-social a:hover {
  color: var(--accent);
}
.member-social span {
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.7rem;
}
.member-card:hover {
  border-top-color: var(--accent);
}
.member-card.is-placeholder {
  opacity: 0.6;
}
.member-card.is-placeholder:hover {
  border-top-color: var(--rule);
}

/* ── 联系方式：联系人条目 ──────────────────────────────── */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--ink);
}
.contact-card {
  border-bottom: 1px solid var(--rule);
}
.contact-card .card-skin {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "icon title action"
    "icon desc action"
    "icon badge action";
  align-items: start;
  column-gap: 1.4rem;
  padding: 1.6rem 0 1.7rem;
  text-align: left;
}
.contact-card .contact-icon {
  grid-area: icon;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  background: none;
  clip-path: none;
  color: var(--accent);
  font-size: 1.15rem;
}
.contact-card .contact-icon.qq-group,
.contact-card .contact-icon.qq-channel,
.contact-card .contact-icon.github,
.contact-card .contact-icon.social,
.contact-card .contact-icon.afdian {
  background: none;
  color: var(--accent);
}
.contact-card h3 {
  grid-area: title;
  margin: 0 0 0.2rem;
  font-size: 1.35rem;
}
.contact-card p {
  grid-area: desc;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.88rem;
  line-height: 1.9;
}
.contact-card .status-badge {
  grid-area: badge;
  justify-self: start;
  margin-top: 0.4rem;
}
.contact-card .btn-outline {
  grid-area: action;
  align-self: start;
  justify-self: end;
  padding: 0.5rem 0.85rem;
  font-size: 0.78rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0;
  background: none;
  clip-path: none;
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}
.status-badge::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 50%;
  background: currentColor;
}
.status-badge.ready {
  color: var(--green);
}
.status-badge.coming {
  color: var(--ink-3);
}

/* ── 说明条 ────────────────────────────────────────────── */

.callout {
  position: static;
  isolation: auto;
  margin-top: 2.5rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: none;
  clip-path: none;
  color: var(--ink-3);
  font-size: 0.88rem;
  line-height: 1.9;
}
.callout::before {
  display: none;
}
.callout p {
  margin: 0;
}
.callout i {
  margin-right: 0.3rem;
  color: var(--accent);
}
.callout a {
  color: var(--accent);
}
.callout span {
  display: block;
  margin-top: 0.35rem;
  color: var(--ink-2);
}

/* ── 子页标题区 ────────────────────────────────────────── */

.page-header {
  position: relative;
  padding: clamp(4rem, 8vw, 6.5rem) 0 clamp(2.4rem, 4vw, 3.4rem);
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
  overflow: visible;
}
.page-header::before {
  display: none;
}
.page-header > .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  margin: 0;
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}
.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}
.breadcrumb a:hover {
  text-decoration: underline;
}
.page-title {
  margin: 1.1rem 0 0.7rem;
  font-size: clamp(2.6rem, 5.6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.005em;
}
.page-desc {
  max-width: 54ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.98rem;
  line-height: 1.9;
}

/* 子页导语与页尾行动 */
.page-intro {
  max-width: 62ch;
  margin: 0 0 2.8rem;
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.32rem);
  line-height: 1.9;
}
.page-intro span {
  display: block;
  margin-top: 0.4rem;
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.78rem;
}
.page-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: 3.2rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-2);
  font-size: 0.9rem;
}
.page-cta p {
  margin: 0;
}
.page-cta .btn-outline {
  font-size: 0.8rem;
}
.page-cta i.fa-heart {
  color: var(--accent);
}

/* ── 关于页 ────────────────────────────────────────────── */

.about-content {
  max-width: 74ch;
  margin-left: max(0px, calc((100% - var(--container)) / 2));
  margin-right: auto;
}
.about-content h2 {
  margin: 0 0 1.4rem;
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  line-height: 1.15;
}
.about-content h3 {
  margin: 2.2rem 0 0.7rem;
  font-size: 1.3rem;
}
.about-content p {
  margin: 0 0 1.4rem;
  color: var(--ink-2);
  font-size: 0.98rem;
  line-height: 2.05;
  text-align: justify;
  text-justify: inter-ideograph;
}
.about-content p:first-of-type {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.12rem;
  line-height: 2;
}
.about-content p:first-of-type::first-letter {
  float: left;
  padding: 0.06em 0.08em 0 0;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 3.5em;
  line-height: 0.8;
}
.about-content a {
  color: var(--accent);
}
.about-content strong {
  color: var(--ink);
  font-weight: 600;
}

.timeline {
  position: static;
  max-width: 100%;
  border-top: 1px solid var(--ink);
}
.timeline-item {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  column-gap: clamp(1.5rem, 4vw, 3rem);
  margin: 0;
  padding: 1.35rem 0 1.5rem;
  border-left: 0;
  border-bottom: 1px solid var(--rule);
}
.timeline-item::before {
  display: none;
}
.timeline-date {
  grid-column: 1;
  grid-row: 1 / 3;
  margin: 0;
  padding-top: 0.18rem;
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
}
.timeline-title {
  grid-column: 2;
  grid-row: 1;
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
}
.timeline-desc {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.88rem;
  line-height: 1.9;
}
.timeline-item.is-milestone {
  border-bottom-color: var(--accent);
}
.timeline-item.is-milestone .timeline-date {
  color: var(--accent);
}
.timeline-item.is-milestone .timeline-date::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 0.45rem;
  background: var(--accent);
  vertical-align: middle;
}
.timeline-item.is-milestone .timeline-title {
  color: var(--accent);
}
.timeline-item.future {
  opacity: 0.55;
}
.timeline-item.future .timeline-date,
.timeline-item.future .timeline-title {
  color: var(--ink-3);
}

/* ── 行动号召条 ────────────────────────────────────────── */

.cta-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  position: relative;
  isolation: auto;
  padding: clamp(2rem, 5vw, 3.5rem);
  background: var(--ink);
  color: var(--paper);
  clip-path: none;
}
.cta-band::before {
  display: none;
}

.section-head + .contact-grid {
  border-top: 0;
}
.cta-copy h2 {
  margin: 0 0 0.6rem;
  color: var(--paper);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
}
.cta-copy p {
  max-width: 58ch;
  margin: 0;
  color: var(--paper);
  font-size: 0.92rem;
  line-height: 1.9;
  opacity: 0.8;
}
.cta-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
}
.cta-actions .btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}
.cta-actions .btn-primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
}
.cta-actions .btn-outline {
  background: transparent;
  border-color: var(--paper);
  color: var(--paper);
}
.cta-actions .btn-outline:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

/* ── 页脚 ──────────────────────────────────────────────── */

.footer {
  margin-top: 0;
  padding: 3.2rem 0 0;
  background: var(--paper-2);
  border-top: 1px solid var(--ink);
  color: var(--ink-2);
  font-size: 0.86rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 2.2rem 1.4rem;
  align-items: start;
}
.footer-col {
  min-width: 0;
}
.footer-col:nth-child(1) {
  grid-column: 1 / 6;
  grid-row: 1;
}
.footer-col:nth-child(2) {
  grid-column: 7 / 9;
  grid-row: 1;
}
.footer-col:nth-child(3) {
  grid-column: 9 / 11;
  grid-row: 1;
}
.footer-col:nth-child(4) {
  grid-column: 1 / 6;
  grid-row: 2;
}
.footer-col:nth-child(5) {
  grid-column: 11 / 13;
  grid-row: 1;
}
.footer-brand {
  margin-bottom: 0.45rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.55rem;
  line-height: 1.2;
}
.footer-tagline {
  max-width: 32ch;
  color: var(--ink-3);
  font-size: 0.84rem;
  line-height: 1.85;
}
.footer-col-title {
  margin-bottom: 0.85rem;
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
}
ul.footer-nav li {
  margin-bottom: 0.4rem;
}
.footer-nav a {
  color: var(--ink-2);
  font-size: 0.84rem;
  text-decoration: none;
}
.footer-nav a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
.footer-social {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-social a,
.footer-social button.qr-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  font-size: 0.95rem;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer-social a:hover,
.footer-social .qr-trigger:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2.5rem;
  padding: 1.1rem 0 1.2rem;
  border-top: 1px solid var(--rule);
}
.footer-copy {
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}
.footer-copy a {
  color: var(--ink-3);
  text-decoration: none;
}
.footer-copy a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* ── 二维码弹窗 ────────────────────────────────────────── */

.qr-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--overlay);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.18s var(--ease);
}
.qr-overlay.open {
  display: flex;
  opacity: 1;
}
.qr-overlay.closing {
  opacity: 0;
  pointer-events: none;
}
.qr-modal {
  position: relative;
  isolation: auto;
  width: min(100%, 320px);
  max-width: 320px;
  padding: 1.8rem 1.6rem 1.5rem;
  background: var(--paper);
  border: 1px solid var(--ink);
  text-align: center;
  opacity: 0;
  transform: scale(0.98);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
}
.qr-overlay.open .qr-modal {
  opacity: 1;
  transform: scale(1);
}
.qr-overlay.closing .qr-modal {
  opacity: 0;
  transform: scale(0.98);
}
.qr-modal::before {
  display: none;
}
.qr-modal img,
.qr-modal svg {
  width: 220px;
  height: 220px;
  max-width: 100%;
  margin: 0 auto 1rem;
  border: 1px solid var(--rule);
  object-fit: contain;
}
.qr-label {
  margin-bottom: 0.15rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.15rem;
}
.qr-hint {
  color: var(--ink-3);
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}
.qr-close {
  position: absolute;
  top: 0.55rem;
  right: 0.7rem;
  color: var(--ink-3);
  font-size: 1.3rem;
  line-height: 1;
  transition: color var(--dur) var(--ease);
}
.qr-close:hover {
  color: var(--ink);
}

/* ── 赞助页 ────────────────────────────────────────────── */

.donate-intro {
  max-width: 64ch;
  margin: 0 0 2.8rem;
}
.donate-intro .heart-icon {
  margin-bottom: 0.8rem;
  color: var(--accent);
  font-size: 1rem;
}
.donate-intro p {
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 1.08rem;
  line-height: 2;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: 2rem;
  filter: none;
}
.use-item {
  position: relative;
  isolation: auto;
  padding: 1.2rem 0 0;
  background: none;
  border-top: 1px solid var(--ink);
  clip-path: none;
  text-align: left;
  transition: border-color var(--dur) var(--ease);
}
.use-item::before {
  display: none;
}
.use-item:hover {
  border-top-color: var(--accent);
}
.use-item i {
  display: block;
  margin-bottom: 0.7rem;
  color: var(--accent);
  font-size: 1rem;
}
.use-item h4 {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
}
.use-item p {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.82rem;
  line-height: 1.8;
}

.thanks-section {
  margin-top: 3rem;
  padding: 2rem 0;
  background: none;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  clip-path: none;
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.9;
  text-align: center;
}
.thanks-section::before {
  display: none;
}
.thanks-section p {
  margin: 0;
}
.thanks-section i {
  color: var(--accent);
}

/* ── 响应式 ────────────────────────────────────────────── */

@media (max-width: 980px) {
  .hero .hero-inner {
    display: block;
  }
  .hero-copy {
    display: block;
  }
  .hero-eyebrow {
    margin-bottom: 1rem;
  }
  .hero-title {
    margin-bottom: 1rem;
  }
  .hero-subtitle {
    margin-bottom: 1rem;
  }
  .hero-tagline {
    margin-bottom: 1.5rem;
  }
  .hero-actions {
    margin-bottom: 1.5rem;
  }
  .hero-stats {
    margin-top: 0;
  }
  .hero-visual {
    margin-top: 2.5rem;
  }
}

@media (max-width: 900px) {
  .hamburger {
    display: flex;
  }
  .navbar .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    padding: 0.4rem var(--gutter) 1rem;
    background: var(--paper);
    border-bottom: 1px solid var(--ink);
  }
  .navbar .nav-links.open {
    display: flex;
  }
  .navbar .nav-links li {
    display: block;
  }
  .navbar .nav-links a {
    padding: 0.8rem 0.1rem;
    border-bottom: 1px solid var(--rule-soft);
    font-size: 0.95rem;
  }
  .navbar .nav-links a::after {
    display: none;
  }
  .navbar .nav-links li:last-child {
    display: flex;
    justify-content: flex-start;
    padding-top: 0.75rem;
  }
  .navbar .theme-toggle {
    width: 32px;
    margin-left: 0;
  }

  .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .use-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-col:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
  }
  .footer-col:nth-child(1) {
    grid-column: 1 / -1;
  }
}

@media (max-width: 800px) {
  .section-head {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .sec-index {
    padding-top: 0;
  }
  .sec-link {
    margin-top: 0.25rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .feature-card p {
    max-width: 56ch;
  }

  #featuredGrid {
    grid-template-columns: 1fr;
  }

  .card-grid:not(#featuredGrid) .card-skin {
    display: block;
    padding: 1.75rem 0 1.9rem;
  }
  .card-grid:not(#featuredGrid) .repo-desc {
    margin-top: 0.7rem;
  }
  .card-grid:not(#featuredGrid) .repo-tags,
  .card-grid:not(#featuredGrid) .repo-foot,
  .card-grid:not(#featuredGrid) .card-details,
  .card-grid:not(#featuredGrid) .card-link {
    margin-top: 0.85rem;
  }
  .project-card.is-placeholder > .card-skin > .card-placeholder {
    display: none;
  }

  .contact-card .card-skin {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "icon title"
      "icon desc"
      "icon badge"
      "icon action";
  }
  .contact-card .btn-outline {
    justify-self: start;
    margin-top: 0.7rem;
  }

  .cta-band {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    display: block;
  }
  .timeline-date {
    margin-bottom: 0.3rem;
  }
}

@media (max-width: 620px) {
  :root {
    --section-y: 3.5rem;
  }

  .hero-title {
    font-size: clamp(2.5rem, 11vw, 3.4rem);
  }
  .hero-stats {
    gap: 1.4rem;
  }
  .hero-stats .stat-num {
    font-size: 1.4rem;
  }

  .page-title {
    font-size: clamp(2.2rem, 9vw, 3rem);
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-col:nth-child(n) {
    grid-column: 1 / -1;
  }

  .about-content p {
    text-align: left;
  }
  .about-content p:first-of-type::first-letter {
    font-size: 3em;
  }

  .cta-band {
    padding: 1.6rem 1.25rem;
  }
  .cta-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }
  .cta-actions .btn,
  .cta-actions .btn-primary,
  .cta-actions .btn-outline {
    width: 100%;
  }
  .cta-actions .btn:last-child {
    grid-column: 1 / -1;
  }
  .page-cta {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }
}

@media (max-width: 420px) {
  .container {
    padding-inline: 1.1rem;
  }
  .navbar {
    padding-inline: 1.1rem;
  }
  .contact-card .card-skin {
    column-gap: 1rem;
  }
  .contact-card .contact-icon {
    width: 30px;
    height: 30px;
    font-size: 1rem;
  }
}

/* ── 可访问性 ──────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in,
  .fade-in.visible {
    opacity: 1;
    transform: none;
  }
  .hero-copy > *,
  .hero-visual {
    opacity: 1;
    transform: none;
    animation: none !important;
  }
  .terminal-cursor {
    opacity: 1;
    animation: none !important;
  }
}

@supports not (backdrop-filter: blur(2px)) {
  .qr-overlay {
    background: rgba(10, 12, 16, 0.88);
  }
}