/* ============================================================
   Congle · 个人网站
   暖纸质感 · 衬线大标题 · 陶土红点缀
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --bg-primary: #f4ede2;
  --bg-secondary: #e9dcc8;
  --bg-card: rgba(255, 251, 246, 0.78);
  --bg-card-hover: rgba(255, 253, 249, 0.95);
  --text-primary: #241b15;
  --text-secondary: #65584d;
  --text-muted: #918276;
  --accent: #bb5d37;
  --accent-light: #d69254;
  --accent-deep: #a34e2c;
  --accent-blue: #566d8a;
  --accent-green: #4e6e52;
  --gradient-accent: linear-gradient(135deg, #b85b35, #e7c37f);
  --border-color: rgba(91, 63, 41, 0.12);
  --border-color-hover: rgba(91, 63, 41, 0.24);
  --shadow-card: 0 24px 70px rgba(68, 48, 34, 0.08);
  --shadow-card-hover: 0 28px 78px rgba(68, 48, 34, 0.13);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font-serif: Georgia, 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Menlo, monospace;

  --container-width: 1160px;
  --nav-height: 72px;
  --strip-height: 40px;
  --section-padding: 96px 0;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background:
    radial-gradient(circle at top right, rgba(242, 199, 122, 0.18), transparent 24%),
    radial-gradient(circle at 8% 68%, rgba(86, 109, 138, 0.08), transparent 20%),
    linear-gradient(180deg, #f7f1e7, #f0e7d9 52%, #f6f0e8 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 细网格纸纹理 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(91, 63, 41, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 63, 41, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.7), rgba(0,0,0,.25) 40%, rgba(0,0,0,.55));
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.7), rgba(0,0,0,.25) 40%, rgba(0,0,0,.55));
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

.section { padding: var(--section-padding); }

::selection { background: rgba(187, 93, 55, 0.22); }

/* ---------- 页面加载动画 ---------- */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #f7f1e7, #efe5d4);
  transition: opacity 0.6s ease, visibility 0.6s ease, transform 0.6s ease;
}
.page-loader .loader-mark {
  font-family: var(--font-serif);
  font-size: 2rem;
  letter-spacing: 0.35em;
  color: var(--text-primary);
  animation: loaderPulse 1.4s ease-in-out infinite;
}
.page-loader .loader-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 40%;
  background: var(--gradient-accent);
  animation: loaderSlide 1.2s ease-in-out infinite;
}
.page-loader.loaded {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-2%);
}
@keyframes loaderPulse {
  0%, 100% { opacity: 0.55; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-4px); }
}
@keyframes loaderSlide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background var(--transition-normal), box-shadow var(--transition-normal),
    border-color var(--transition-normal), backdrop-filter var(--transition-normal);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(247, 241, 231, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border-color);
  box-shadow: 0 10px 34px rgba(68, 48, 34, 0.07);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.16rem;
  letter-spacing: 0.04em;
}
.nav-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fdf8f2;
  background: radial-gradient(circle at 30% 25%, #d69254, #a34e2c 72%);
  box-shadow: 0 4px 14px rgba(163, 78, 44, 0.35);
}
.nav-links {
  display: flex;
  gap: 30px;
}
.nav-links a {
  position: relative;
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 6px 2px;
  transition: color var(--transition-fast);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  transition: width var(--transition-normal);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.active { color: var(--text-primary); font-weight: 600; }
.nav-links a.active::after { width: 100%; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: calc(var(--nav-height) + var(--strip-height));
  left: 0;
  width: 100%;
  z-index: 990;
  background: rgba(247, 241, 231, 0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 28px 22px;
  display: none;
  flex-direction: column;
  transform: translateY(-12px);
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}
.mobile-menu a {
  padding: 13px 4px;
  font-size: 1.05rem;
  border-bottom: 1px dashed var(--border-color);
  color: var(--text-secondary);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu.open { transform: translateY(0); opacity: 1; }

/* ---------- 顶部信号走马灯 ---------- */
.signal-strip {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  height: var(--strip-height);
  z-index: 995;
  overflow: hidden;
  background: rgba(238, 226, 206, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}
.signal-track {
  display: flex;
  align-items: center;
  height: 100%;
  width: max-content;
  animation: stripScroll 30s linear infinite;
}
.signal-strip:hover .signal-track { animation-play-state: paused; }
.signal-track span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 34px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  white-space: nowrap;
}
.signal-track b {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--accent);
}
.signal-track span + span { border-left: 1px solid var(--border-color); }
@keyframes stripScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Hero ---------- */
.page-hero,
.lab-hero {
  position: relative;
  padding: calc(var(--nav-height) + var(--strip-height) + 58px) 0 60px;
  overflow: hidden;
}
.lab-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: start;
}

.lab-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.3em;
  color: var(--text-secondary);
  text-transform: uppercase;
}
.lab-kicker i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 0 0 rgba(78, 110, 82, 0.5);
  animation: dotPulse 2.2s ease-out infinite;
}
@keyframes dotPulse {
  0% { box-shadow: 0 0 0 0 rgba(78, 110, 82, 0.45); }
  70% { box-shadow: 0 0 0 9px rgba(78, 110, 82, 0); }
  100% { box-shadow: 0 0 0 0 rgba(78, 110, 82, 0); }
}

.lab-hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.6rem, 5.6vw, 4.4rem);
  line-height: 1.22;
  letter-spacing: 0.01em;
  margin: 22px 0 24px;
}
.lab-hero h1 .accent-dot { color: var(--accent); }

.lab-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 34em;
  margin-bottom: 26px;
}

.home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  font-size: 0.86rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.pill:hover {
  border-color: var(--border-color-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 0.96rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
}
.btn-primary {
  color: #fdf8f2;
  background: linear-gradient(135deg, #bb5d37, #a34e2c);
  box-shadow: 0 12px 30px rgba(163, 78, 44, 0.32);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(163, 78, 44, 0.4);
}
.btn-secondary {
  color: var(--text-primary);
  background: var(--bg-card);
  border-color: var(--border-color);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
  box-shadow: 0 14px 34px rgba(68, 48, 34, 0.1);
}
.btn-ghost {
  color: var(--accent);
  background: transparent;
  border-color: rgba(187, 93, 55, 0.4);
}
.btn-ghost:hover {
  background: rgba(187, 93, 55, 0.07);
  transform: translateY(-3px);
}
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

/* ---------- 终端卡片 ---------- */
.lab-console {
  position: relative;
  border: 1px solid rgba(77, 58, 42, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 246, 0.8);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow: hidden;
}
.console-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
}
.console-topbar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.console-topbar i:nth-child(1) { background: #e08a7a; }
.console-topbar i:nth-child(2) { background: #e6c37f; }
.console-topbar i:nth-child(3) { background: #9dba8f; }
.console-topbar em {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.console-body {
  position: relative;
  padding: 24px 24px 20px;
  background-image:
    linear-gradient(rgba(91, 63, 41, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 63, 41, 0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}
.console-profile {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
}
.console-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.7rem;
  color: #fdf8f2;
  background: radial-gradient(circle at 30% 25%, #d69254, #a34e2c 74%);
  box-shadow: 0 8px 22px rgba(163, 78, 44, 0.32);
}
.console-profile h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.console-profile p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.console-lines { padding: 8px 0 4px; }
.console-lines li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 14px;
  padding: 11px 2px;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.92rem;
}
.console-lines li:last-child { border-bottom: none; }
.console-lines b {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--accent-green);
  padding-top: 3px;
}
.console-lines span { color: var(--text-primary); }

.console-build {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: rgba(250, 245, 236, 0.85);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-secondary);
}
.console-build .type-line { display: block; min-height: 1.5em; }
.console-build .type-line::after {
  content: '▍';
  color: var(--accent);
  animation: caretBlink 1s steps(1) infinite;
}
.console-build .type-line.done::after { content: ''; }
@keyframes caretBlink { 50% { opacity: 0; } }

.console-foot {
  padding: 12px 18px 16px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

/* ---------- 区块标题 ---------- */
.lab-section-head { margin-bottom: 44px; }
.lab-section-head .lab-kicker { color: var(--accent); }
.lab-section-head .lab-kicker i { display: none; }
.lab-section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  margin: 14px 0 12px;
}
.lab-section-head p {
  color: var(--text-secondary);
  max-width: 36em;
}

/* ---------- 主题四宫格（细线分隔卡） ---------- */
.help-section {
  position: relative;
  background: linear-gradient(180deg, rgba(243, 233, 217, 0.55), rgba(238, 226, 206, 0.55));
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.help-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(78, 46, 29, 0.14);
  border-left: 1px solid rgba(78, 46, 29, 0.14);
}
.help-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 300px;
  padding: 30px 26px;
  border-right: 1px solid rgba(78, 46, 29, 0.14);
  border-bottom: 1px solid rgba(78, 46, 29, 0.14);
  background: rgba(255, 252, 247, 0.66);
  transition: background var(--transition-normal), transform var(--transition-normal);
  position: relative;
}
.help-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}
.help-index {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--accent);
  letter-spacing: 0.14em;
}
.help-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}
.help-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  flex: 1;
}
.help-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.help-link .arr { transition: transform var(--transition-fast); }
.help-card:hover .arr { transform: translateX(4px); }

.help-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 34px;
}
.help-next p { font-size: 0.95rem; color: var(--text-secondary); }
.help-next p b {
  color: var(--accent-green);
  font-weight: 600;
  margin-right: 12px;
}

/* ---------- 价值观带 ---------- */
.values-section {
  position: relative;
  background: linear-gradient(180deg, #ece0cb, #e7d9c0);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}
.values-section .watermark {
  top: 54%;
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.value-card {
  padding: 40px 30px 34px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  text-align: left;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.value-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}
.value-card .vn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--accent);
}
.value-card h3 {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin: 12px 0 10px;
}
.value-card p { color: var(--text-secondary); font-size: 0.94rem; }

/* 背景水印大字 */
.watermark {
  position: absolute;
  left: 0;
  width: 100%;
  top: 50%;
  transform: translateY(-50%);
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.watermark-track {
  display: flex;
  width: max-content;
  animation: watermarkScroll 46s linear infinite;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(5rem, 12vw, 9rem);
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: rgba(91, 63, 41, 0.055);
  line-height: 1;
}
@keyframes watermarkScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 最新文章 ---------- */
.writing-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 52px;
  align-items: start;
}
.empty-console {
  border: 1px solid rgba(77, 58, 42, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 246, 0.8);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  backdrop-filter: blur(14px);
}
.empty-console .console-body { padding: 26px 24px; }
.empty-console code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 7px 0;
}
.empty-console code .dollar { color: var(--accent); margin-right: 10px; }
.empty-console code .gt { color: var(--accent-green); margin-right: 10px; }
.empty-console code.muted { color: var(--text-muted); }
.topic-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- CTA 大卡 ---------- */
.lab-cta-card {
  position: relative;
  border: 1px solid rgba(77, 58, 42, 0.14);
  border-radius: var(--radius-xl);
  background: rgba(255, 251, 246, 0.85);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  padding: clamp(44px, 7vw, 84px) clamp(28px, 6vw, 76px);
  overflow: hidden;
}
.lab-cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 88% 8%, rgba(242, 199, 122, 0.28), transparent 34%),
    radial-gradient(circle at 4% 92%, rgba(187, 93, 55, 0.1), transparent 30%);
  pointer-events: none;
}
.lab-cta-card h2 {
  position: relative;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.3;
  max-width: 18em;
}
.lab-cta-card > p {
  position: relative;
  margin: 18px 0 34px;
  color: var(--text-secondary);
  max-width: 40em;
}
.cta-contact-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  border-top: 1px solid var(--border-color);
  background: linear-gradient(180deg, rgba(238, 226, 206, 0.4), rgba(233, 220, 200, 0.75));
  padding: 72px 0 0;
  overflow: hidden;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 56px;
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
}
.footer-brand p {
  margin-top: 14px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  max-width: 24em;
}
.footer-col h4 {
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer-col a,
.footer-col span {
  display: block;
  padding: 6px 0;
  font-size: 0.94rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.footer-col a:hover {
  color: var(--accent);
  transform: translateX(4px);
}
.footer-bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 0 88px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-watermark {
  position: absolute;
  bottom: -14px;
  left: 0;
  width: 100%;
  overflow: hidden;
  pointer-events: none;
}
.footer-watermark .watermark-track {
  font-size: clamp(4rem, 9vw, 7rem);
  color: rgba(91, 63, 41, 0.06);
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--accent);
  font-size: 1.15rem;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 26px rgba(68, 48, 34, 0.12);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px);
  border-color: rgba(187, 93, 55, 0.45);
}

/* ---------- 快捷入口弹窗 ---------- */
.quick-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.quick-modal.open { opacity: 1; visibility: visible; }
.quick-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(58, 42, 30, 0.28);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.quick-panel {
  position: relative;
  width: min(720px, 100%);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(77, 58, 42, 0.14);
  background: rgba(252, 247, 240, 0.97);
  box-shadow: 0 40px 110px rgba(50, 34, 22, 0.28);
  transform: translateY(24px) scale(0.98);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.quick-modal.open .quick-panel { transform: translateY(0) scale(1); }
.quick-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 30px 34px 24px;
  border-bottom: 1px solid var(--border-color);
}
.quick-head .lab-kicker { color: var(--accent); font-size: 0.7rem; }
.quick-head h3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  margin-top: 10px;
}
.quick-close {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}
.quick-close:hover {
  background: rgba(187, 93, 55, 0.08);
  color: var(--accent);
  transform: rotate(90deg);
}
.quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.quick-item {
  display: block;
  padding: 26px 34px;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast);
}
.quick-item:nth-child(odd) { border-right: 1px solid var(--border-color); }
.quick-item:nth-last-child(-n+2) { border-bottom: none; }
.quick-item:hover { background: rgba(255, 252, 247, 0.9); }
.quick-item .qi-top {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.quick-item .qi-num {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--accent);
}
.quick-item h4 {
  font-family: var(--font-serif);
  font-size: 1.18rem;
}
.quick-item p {
  margin-top: 10px;
  padding-left: 34px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ---------- 内页头部 ---------- */
.page-hero .lab-kicker { color: var(--accent); }
.page-hero .lab-kicker i { display: none; }
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 4.6rem);
  line-height: 1.2;
  margin: 20px 0 20px;
}
.page-hero .lab-lead { font-size: 1.06rem; }
.page-hero { padding-bottom: 30px; }

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}
.email-card {
  border: 1px solid rgba(77, 58, 42, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 246, 0.82);
  box-shadow: var(--shadow-card);
  padding: 36px 34px;
  backdrop-filter: blur(14px);
}
.email-card .lab-kicker { color: var(--accent); }
.email-card .email-text {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin: 16px 0 26px;
  word-break: break-all;
  color: var(--text-primary);
}
.contact-note {
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.contact-list li {
  display: flex;
  gap: 14px;
  padding: 16px 2px;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.96rem;
  color: var(--text-secondary);
}
.contact-list b {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--accent-green);
  padding-top: 5px;
  min-width: 76px;
}

/* ---------- 文章页行样式（未来填充用） ---------- */
.post-row {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 22px 6px;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.post-row:hover { transform: translateX(6px); }
.post-row .pn {
  font-family: var(--font-serif);
  color: var(--accent);
  min-width: 34px;
}
.post-row h3 { font-family: var(--font-serif); font-size: 1.2rem; }
.post-row time {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---------- 滚动渐入动效 ---------- */
.fade-in,
.fade-in-right,
.fade-in-left {
  opacity: 0;
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
.fade-in { transform: translateY(34px); }
.fade-in-right { transform: translateX(40px); }
.fade-in-left { transform: translateX(-40px); }
.fade-in.visible,
.fade-in-right.visible,
.fade-in-left.visible {
  opacity: 1;
  transform: translate(0, 0);
}
.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }

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

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .lab-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .help-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: 1fr; }
  .writing-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 62px;
    --strip-height: 34px;
    --section-padding: 68px 0;
  }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: flex; }
  .help-grid { grid-template-columns: 1fr; }
  .help-card { min-height: 0; }
  .quick-grid { grid-template-columns: 1fr; }
  .quick-item:nth-child(odd) { border-right: none; }
  .quick-item:nth-last-child(-n+2) { border-bottom: 1px solid var(--border-color); }
  .quick-item:last-child { border-bottom: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-cta-row .btn { width: 100%; justify-content: center; }
  .console-lines li { grid-template-columns: 72px 1fr; }
}

/* ---------- 后台可配置图片的前台展示 ---------- */
.hero-avatar { margin-bottom: 20px; }
.hero-avatar img {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 6px rgba(163, 78, 44, 0.12);
}
.skill-icon {
  width: 34px;
  height: 34px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 10px;
  display: block;
  border: 1px solid var(--border-color);
}
.project-cover {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
}
.social-pill { display: inline-flex; align-items: center; gap: 8px; }
.social-icon {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  object-fit: cover;
}
.social-qrcode img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  display: block;
}