/* ============================================================
   NOCAU 首页专属样式 · home-new.css
   视觉语言：neu-3zden —— 纯白 / 浅灰低饱和底色 · 新拟态柔和双向投影 ·
   柔光渐变与 3D 质感氛围 · 克制留白与大字号排版
   说明：仅提炼参考站的视觉语言，未引用其图片素材与文案。
   - 命名空间 tk-*，不与公共样式 / 子页样式冲突
   - 材质色均由 style.css 主题变量（--bg / --bg-card / --text / --brand）派生，双主题自动跟随
   - hero 轨道图标体系（.hero-orbit-* / --hero-ink 斐波那契 34:21:13）由 style.css 提供，此处仅调整容器
   ============================================================ */

/* ---------- 首页局部材质变量（由公共主题变量派生） ---------- */
html[data-theme="light"] {
  --tk-bg-a: color-mix(in srgb, var(--bg) 95%, var(--text) 5%);
  --tk-bg-b: color-mix(in srgb, var(--bg) 86%, var(--text) 14%);
  --tk-surface-raised: linear-gradient(145deg,
      color-mix(in srgb, var(--bg-card) 97%, var(--text) 3%) 0%,
      color-mix(in srgb, var(--bg-card) 88%, var(--text) 9%) 100%);
  --tk-surface-sunken: linear-gradient(145deg,
      color-mix(in srgb, var(--bg-card) 88%, var(--text) 9%) 0%,
      color-mix(in srgb, var(--bg-card) 99%, var(--text) 1%) 100%);
  --tk-shadow-out: 9px 9px 24px rgba(24, 28, 34, 0.13), -9px -9px 24px rgba(255, 255, 255, 0.96);
  --tk-shadow-out-lg: 16px 16px 40px rgba(24, 28, 34, 0.16), -16px -16px 40px rgba(255, 255, 255, 1);
  --tk-shadow-in: inset 5px 5px 12px rgba(24, 28, 34, 0.09), inset -5px -5px 12px rgba(255, 255, 255, 0.92);
  --tk-shadow-in-sm: inset 3px 3px 7px rgba(24, 28, 34, 0.08), inset -3px -3px 7px rgba(255, 255, 255, 0.88);
  --tk-edge: color-mix(in srgb, var(--bg-card) 72%, transparent);
  --tk-sheen: color-mix(in srgb, var(--bg-card) 62%, transparent);
  --tk-floor: rgba(24, 28, 34, 0.08);
}

html[data-theme="dark"] {
  --tk-bg-a: color-mix(in srgb, var(--bg) 76%, var(--text) 13%);
  --tk-bg-b: color-mix(in srgb, var(--bg) 90%, var(--text) 5%);
  --tk-surface-raised: linear-gradient(145deg,
      color-mix(in srgb, var(--bg-card) 88%, var(--text) 7%) 0%,
      color-mix(in srgb, var(--bg-card) 97%, var(--text) 1%) 100%);
  --tk-surface-sunken: linear-gradient(145deg,
      color-mix(in srgb, var(--bg-card) 97%, var(--text) 1%) 0%,
      color-mix(in srgb, var(--bg-card) 86%, var(--text) 8%) 100%);
  --tk-shadow-out: 9px 9px 24px rgba(0, 0, 0, 0.58), -9px -9px 24px rgba(255, 255, 255, 0.07);
  --tk-shadow-out-lg: 16px 16px 40px rgba(0, 0, 0, 0.66), -16px -16px 40px rgba(255, 255, 255, 0.09);
  --tk-shadow-in: inset 5px 5px 12px rgba(0, 0, 0, 0.50), inset -5px -5px 12px rgba(255, 255, 255, 0.035);
  --tk-shadow-in-sm: inset 3px 3px 7px rgba(0, 0, 0, 0.45), inset -3px -3px 7px rgba(255, 255, 255, 0.03);
  --tk-edge: color-mix(in srgb, var(--text) 8%, transparent);
  --tk-sheen: color-mix(in srgb, var(--text) 7%, transparent);
  --tk-floor: rgba(0, 0, 0, 0.45);
}

/* ---------- 基础 ---------- */
body {
  background:
    radial-gradient(1100px 620px at 78% -8%, color-mix(in srgb, var(--brand) 12%, transparent), transparent 68%),
    radial-gradient(900px 620px at 2% 4%, color-mix(in srgb, var(--text) 5%, transparent), transparent 70%),
    linear-gradient(165deg, var(--tk-bg-a) 0%, var(--tk-bg-b) 100%);
  background-attachment: fixed;
  color: var(--text);
  letter-spacing: -0.01em;
}

.gradient-text {
  background: linear-gradient(120deg, var(--text) 0%, color-mix(in srgb, var(--brand) 76%, var(--text)) 62%, var(--text) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.tk-shell {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 28px;
}

.tk-eyebrow {
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--brand) 62%, var(--text-3));
  margin-bottom: 14px;
}

.tk-h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 660;
  letter-spacing: -0.032em;
  line-height: 1.18;
  color: var(--text);
  text-wrap: balance;
}

.tk-desc {
  margin-top: 12px;
  color: var(--text-2);
  max-width: 560px;
}

/* ---------- 导航（不依赖外部工具类） ---------- */
.tk-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--tk-bg-a) 82%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--tk-edge);
}

.tk-nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 28px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.tk-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 680;
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: var(--text);
  white-space: nowrap;
}

.tk-brand img { border-radius: 7px; }

.tk-nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.tk-nav-links::-webkit-scrollbar { display: none; }

.tk-nav-links a {
  padding: 7px 13px;
  border-radius: 999px;
  font-size: 0.86rem;
  color: var(--text-2);
  white-space: nowrap;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.tk-nav-links a:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--bg-card) 55%, transparent);
  box-shadow: var(--tk-shadow-in-sm);
}

.tk-nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.tk-lang {
  padding: 7px 13px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-2);
  background: var(--tk-surface-raised);
  box-shadow: var(--tk-shadow-out);
  transition: color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.tk-lang:hover { color: var(--text); box-shadow: var(--tk-shadow-out-lg); }

.tk-theme {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--text-2);
  background: var(--tk-surface-raised);
  box-shadow: var(--tk-shadow-out);
  transition: color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.tk-theme:hover { color: var(--text); box-shadow: var(--tk-shadow-out-lg); }

.tk-theme svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (max-width: 900px) {
  .tk-nav-inner { flex-wrap: wrap; height: auto; padding: 10px 20px 12px; gap: 10px; }
  .tk-nav-links { order: 3; flex-basis: 100%; justify-content: flex-start; }
}

/* ---------- Hero ---------- */
.tk-hero {
  position: relative;
  overflow: hidden;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 140px 0 88px;
}

/* 柔光层：跟随指针做极小位移，营造 3D 光感氛围 */
.tk-orb-glow {
  position: absolute;
  inset: -60px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(680px 460px at 80% 10%, color-mix(in srgb, var(--brand) 13%, transparent), transparent 68%),
    radial-gradient(560px 420px at 92% 62%, color-mix(in srgb, var(--brand) 7%, transparent), transparent 70%),
    radial-gradient(760px 520px at 6% 92%, color-mix(in srgb, var(--text) 5%, transparent), transparent 72%);
  transition: transform 0.6s var(--ease);
  will-change: transform;
}

.tk-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 56px;
  align-items: center;
  width: 100%;
}

.tk-hero-title {
  font-size: clamp(3.1rem, 9.6vw, 7.4rem);
  font-weight: 650;
  letter-spacing: -0.05em;
  line-height: 0.96;
  color: var(--text);
}

.tk-tagline {
  margin-top: 20px;
  font-size: clamp(1.16rem, 2.5vw, 1.66rem);
  font-weight: 560;
  letter-spacing: -0.02em;
  line-height: 1.38;
  color: var(--text);
  text-wrap: balance;
}

.tk-hero-sub {
  margin-top: 18px;
  max-width: 520px;
  color: var(--text-2);
  font-size: 0.98rem;
  line-height: 1.9;
}

.tk-hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 按钮（新拟态药丸） ---------- */
.tk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 620;
  letter-spacing: 0.01em;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease), opacity 0.25s ease;
  will-change: transform;
}

.tk-btn:hover { transform: translateY(-2px); }

.tk-btn-sm { padding: 9px 18px; font-size: 0.84rem; }

.tk-btn-solid {
  background: var(--text);
  color: var(--tk-bg-a);
  box-shadow: 0 14px 30px color-mix(in srgb, var(--text) 20%, transparent),
              inset 1px 1px 2px color-mix(in srgb, var(--bg-card) 45%, transparent);
}

.tk-btn-solid:hover { opacity: 0.92; box-shadow: 0 18px 38px color-mix(in srgb, var(--text) 26%, transparent); }

.tk-btn-ghost {
  background: var(--tk-surface-raised);
  color: var(--text);
  box-shadow: var(--tk-shadow-out);
}

.tk-btn-ghost:hover { box-shadow: var(--tk-shadow-out-lg); }

/* ---------- Hero 视觉托盘（轨道图标体系由 style.css 提供） ---------- */
.tk-hero-visual { display: flex; justify-content: center; }

.tk-orb-panel {
  position: relative;
  width: min(420px, 100%);
  aspect-ratio: 1 / 1.06;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  border-radius: 34px;
  border: 1px solid var(--tk-edge);
  background: var(--tk-surface-sunken);
  box-shadow: var(--tk-shadow-in), 0 28px 60px var(--tk-floor);
}

/* 托盘内的柔光球感，营造 3D 质感 */
.tk-orb-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    radial-gradient(300px 240px at 50% 22%, color-mix(in srgb, var(--brand) 14%, transparent), transparent 72%),
    radial-gradient(240px 200px at 50% 96%, color-mix(in srgb, var(--text) 6%, transparent), transparent 76%);
}

.tk-orb-panel .hero-orbit-logo { transform: scale(1.3); }

.tk-orb-motto {
  position: relative;
  max-width: 250px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.75;
}

.tk-orb-handle {
  position: relative;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 900px) {
  .tk-hero { min-height: auto; padding: 120px 0 64px; }
  .tk-hero-grid { grid-template-columns: minmax(0, 1fr); gap: 44px; }
  .tk-hero-visual { order: -1; }
  .tk-orb-panel { width: min(360px, 100%); aspect-ratio: 1 / 0.92; }
}

/* ---------- 统计条（凹槽） ---------- */
.tk-stats { padding: 14px 0 10px; }

.tk-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  border-radius: 26px;
  padding: 26px 14px;
  border: 1px solid var(--tk-edge);
  background: var(--tk-surface-sunken);
  box-shadow: var(--tk-shadow-in);
}

.tk-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 0;
}

.tk-stat b {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  background: linear-gradient(120deg, var(--text) 0%, color-mix(in srgb, var(--brand) 68%, var(--text)) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.tk-stat span { font-size: 0.82rem; color: var(--text-3); letter-spacing: 0.05em; }

/* ---------- 分节 ---------- */
.tk-section { padding: 104px 0 12px; }
.tk-section-alt { margin-top: 44px; }
.tk-head { max-width: 680px; margin-bottom: 44px; }

/* ---------- Bento 网格 ---------- */
.tk-bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.tk-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  min-height: 156px;
  padding: 26px;
  border-radius: 24px;
  border: 1px solid var(--tk-edge);
  background:
    linear-gradient(180deg, var(--tk-sheen) 0%, transparent 42%),
    var(--tk-surface-raised);
  box-shadow: var(--tk-shadow-out);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  overflow: hidden;
}

/* 指针经过时的柔光（由 home-new.js 写入 --tk-mx / --tk-my） */
.tk-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  background: radial-gradient(260px 200px at var(--tk-mx, 50%) var(--tk-my, 0%),
      color-mix(in srgb, var(--brand) 11%, transparent), transparent 70%);
}

.tk-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--tk-shadow-out-lg);
}

.tk-card:hover::before { opacity: 1; }

.tk-card-lg { grid-column: span 7; grid-row: span 2; min-height: 332px; }
.tk-bento-star,
.tk-bento-ideas { grid-column: span 5; }
.tk-bento-projects,
.tk-bento-services,
.tk-bento-about { grid-column: span 4; }

.tk-card-body { min-width: 0; }

.tk-ico {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  color: color-mix(in srgb, var(--brand) 88%, var(--text));
  background: var(--tk-surface-sunken);
  box-shadow: var(--tk-shadow-in-sm);
}

.tk-ico svg { width: 21px; height: 21px; }

.tk-card h3 { font-size: 1.1rem; font-weight: 640; letter-spacing: -0.018em; color: var(--text); }
.tk-card p { margin-top: 9px; font-size: 0.86rem; line-height: 1.75; color: var(--text-2); }

.tk-card-lg .tk-ico { width: 50px; height: 50px; border-radius: 16px; }
.tk-card-lg .tk-ico svg { width: 24px; height: 24px; }
.tk-card-lg h3 { font-size: 1.4rem; }
.tk-card-lg p { max-width: 430px; font-size: 0.9rem; }

.tk-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.tk-chips span {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  border-radius: 999px;
  padding: 5px 12px;
  background: var(--tk-surface-sunken);
  box-shadow: var(--tk-shadow-in-sm);
}

.tk-go {
  align-self: flex-start;
  font-size: 0.8rem;
  color: var(--text-3);
  transition: color 0.25s ease, transform 0.3s var(--ease);
}

.tk-card:hover .tk-go { color: var(--brand); transform: translateX(4px); }

.tk-static-line { font-style: italic; opacity: 0.9; }

@media (max-width: 1023px) {
  .tk-card-lg { grid-column: span 12; grid-row: span 1; min-height: 240px; }
  .tk-bento-star, .tk-bento-ideas,
  .tk-bento-projects, .tk-bento-services, .tk-bento-about { grid-column: span 6; }
}

@media (max-width: 640px) {
  .tk-shell { padding: 0 20px; }
  .tk-nav-inner { padding: 10px 20px 12px; }
  .tk-bento { gap: 16px; }
  .tk-card { padding: 22px; border-radius: 20px; box-shadow: var(--tk-shadow-out-lg); }
  .tk-card-lg { min-height: 210px; }
  .tk-bento-star, .tk-bento-ideas, .tk-bento-projects,
  .tk-bento-services, .tk-bento-about { grid-column: span 12; }
  .tk-stats-grid { padding: 20px 10px; gap: 8px; border-radius: 22px; }
  .tk-stat b { font-size: 1.7rem; }
  .tk-stat span { font-size: 0.74rem; letter-spacing: 0.02em; }
  .tk-section { padding: 78px 0 8px; }
  .tk-head { margin-bottom: 32px; }
}

/* ---------- 技能三卡 ---------- */
.tk-three {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.tk-skill {
  position: relative;
  padding: 28px 26px;
  border-radius: 24px;
  border: 1px solid var(--tk-edge);
  background:
    linear-gradient(180deg, var(--tk-sheen) 0%, transparent 44%),
    var(--tk-surface-raised);
  box-shadow: var(--tk-shadow-out);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.tk-skill:hover { transform: translateY(-4px); box-shadow: var(--tk-shadow-out-lg); }

.tk-skill h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.02rem;
  font-weight: 640;
  color: var(--text);
}

.tk-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 12px color-mix(in srgb, var(--brand) 55%, transparent);
}

.tk-skill p { margin-top: 12px; font-size: 0.87rem; color: var(--text-2); line-height: 1.8; }

@media (max-width: 820px) { .tk-three { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 关于 ---------- */
.tk-about-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 52px;
  align-items: start;
}

.tk-about-lead {
  margin-top: 22px;
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--text-2);
  max-width: 560px;
}

.tk-about-note {
  margin-top: 16px;
  color: var(--text-3);
  font-size: 0.88rem;
  border-left: 2px solid color-mix(in srgb, var(--brand) 55%, transparent);
  padding-left: 14px;
}

.tk-about-card {
  border-radius: 26px;
  padding: 28px;
  border: 1px solid var(--tk-edge);
  background:
    linear-gradient(180deg, var(--tk-sheen) 0%, transparent 40%),
    var(--tk-surface-raised);
  box-shadow: var(--tk-shadow-out);
}

.tk-about-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed color-mix(in srgb, var(--text) 12%, transparent);
  font-size: 0.9rem;
  color: var(--text);
}

.tk-about-row:last-of-type { border-bottom: none; }

.tk-about-k {
  color: var(--text-3);
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  text-transform: uppercase;
  padding-top: 3px;
  white-space: nowrap;
}

.tk-about-actions { display: flex; gap: 12px; margin-top: 22px; }

@media (max-width: 860px) { .tk-about-grid { grid-template-columns: minmax(0, 1fr); gap: 30px; } }

/* ---------- CTA ---------- */
.tk-cta { padding-bottom: 118px; }

.tk-cta .tk-shell {
  text-align: center;
  padding: 70px 24px;
  border-radius: 34px;
  border: 1px solid var(--tk-edge);
  background:
    radial-gradient(560px 320px at 50% 0%, color-mix(in srgb, var(--brand) 13%, transparent), transparent 72%),
    var(--tk-surface-raised);
  box-shadow: var(--tk-shadow-out);
}

.tk-cta-title { font-size: clamp(1.9rem, 4.4vw, 3rem); font-weight: 660; letter-spacing: -0.035em; color: var(--text); }
.tk-cta-sub { margin-top: 14px; color: var(--text-2); }
.tk-cta-actions { margin-top: 30px; display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.tk-footer {
  border-top: 1px solid var(--tk-edge);
  padding: 48px 0 42px;
}

.tk-footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px 44px;
  align-items: start;
}

.tk-footer-name { font-size: 1.15rem; font-weight: 680; letter-spacing: -0.01em; color: var(--text); }
.tk-footer-brand p { margin-top: 10px; font-size: 0.84rem; color: var(--text-3); max-width: 380px; line-height: 1.75; }

.tk-footer-links {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 10px 28px;
}

.tk-footer-links a { font-size: 0.86rem; color: var(--text-2); transition: color 0.25s ease; }
.tk-footer-links a:hover { color: var(--text); }

.tk-footer-copy {
  grid-column: 1 / -1;
  font-size: 0.78rem;
  color: var(--text-3);
  padding-top: 20px;
  border-top: 1px dashed color-mix(in srgb, var(--text) 12%, transparent);
}

@media (max-width: 760px) {
  .tk-footer-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .tk-footer-links { grid-template-columns: repeat(2, auto); row-gap: 14px; }
}

/* ---------- 进度条 ---------- */
.tk-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--brand), color-mix(in srgb, var(--brand) 45%, var(--text)));
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 90;
  pointer-events: none;
}

/* ---------- 无障碍：减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .tk-card, .tk-skill, .tk-btn, .tk-hero-visual .hero-orbit-logo { transform: none !important; }
  .tk-orb-glow { transition: none !important; }
  .tk-card::before { display: none; }
}