/* ============================
   通用组件
   ============================ */

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  transition: all var(--t-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  white-space: nowrap;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.15) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease-out);
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn-primary {
  background: linear-gradient(120deg, var(--neon-cyan), #00B8D4);
  color: #001318;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 rgba(0, 229, 255, 0);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow-cyan);
  color: #001318;
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: var(--neon-purple);
  color: var(--neon-purple);
  background: rgba(124, 92, 255, 0.06);
}

.btn-ghost:hover {
  background: rgba(124, 92, 255, 0.16);
  box-shadow: var(--shadow-glow-purple);
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline {
  border-color: var(--border-strong);
  color: var(--text);
  background: rgba(14, 17, 24, 0.6);
}

.btn-outline:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 16px 30px;
  font-size: 1rem;
}

.btn-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  flex-shrink: 0;
}

/* ---------- 卡片 ---------- */
.card {
  background: linear-gradient(180deg, rgba(14, 17, 24, 0.85), rgba(14, 17, 24, 0.6));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: all var(--t-base) var(--ease-out);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), transparent 50%);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
  pointer-events: none;
}

.card:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 229, 255, 0.2);
}

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

/* ---------- 标签 / 徽章 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-dim);
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: all var(--t-fast) var(--ease-out);
}

.tag-cyan {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.3);
}

.tag-purple {
  color: var(--neon-purple);
  background: rgba(124, 92, 255, 0.08);
  border-color: rgba(124, 92, 255, 0.3);
}

.tag-green {
  color: var(--neon-green);
  background: rgba(57, 255, 136, 0.08);
  border-color: rgba(57, 255, 136, 0.3);
}

.tag-pink {
  color: var(--neon-pink);
  background: rgba(255, 79, 203, 0.08);
  border-color: rgba(255, 79, 203, 0.3);
}

.tag-yellow {
  color: var(--neon-yellow);
  background: rgba(255, 209, 102, 0.08);
  border-color: rgba(255, 209, 102, 0.3);
}

a.tag:hover {
  background: rgba(0, 229, 255, 0.18);
  color: var(--neon-cyan);
}

/* ---------- 顶栏导航 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 50;
  display: flex;
  align-items: center;
  background: rgba(5, 6, 10, 0.0);
  border-bottom: 1px solid transparent;
  transition: all var(--t-base) var(--ease-out);
  backdrop-filter: blur(0);
  -webkit-backdrop-filter: blur(0);
}

.nav.is-scrolled {
  background: rgba(5, 6, 10, 0.85);
  border-bottom-color: var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text);
  text-decoration: none;
  text-transform: uppercase;
}

.nav__logo:hover { color: var(--neon-cyan); }

.nav__logo-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #001318;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  box-shadow: var(--shadow-glow-cyan);
}

.nav__logo-text {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}

.nav__logo-text small {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--neon-cyan);
  letter-spacing: 0.2em;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  position: relative;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-dim);
  text-decoration: none;
  border-radius: 8px;
  transition: all var(--t-fast) var(--ease-out);
  letter-spacing: 0.04em;
}

.nav__link:hover {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.06);
}

.nav__link.is-active {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.1);
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -22px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--neon-cyan);
}

.nav__cta {
  margin-left: 8px;
}

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.nav__toggle svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

@media (max-width: 860px) {
  .nav__menu,
  .nav__cta {
    display: none;
  }
  .nav__menu.is-open {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(5, 6, 10, 0.95);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
  }
  .nav__menu.is-open .nav__link {
    padding: 12px 16px;
  }
  .nav__menu.is-open .nav__link.is-active::after {
    display: none;
  }
  .nav__toggle {
    display: inline-flex;
  }
}

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.02));
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-purple), transparent);
  opacity: 0.5;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-block: 56px;
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer__brand-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 360px;
}

.footer__title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--neon-cyan);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
}

.footer__list a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease-out);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer__list a::before {
  content: "›";
  color: var(--neon-cyan);
  opacity: 0.6;
}

.footer__list a:hover {
  color: var(--neon-cyan);
}

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-block: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.footer__icp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease-out);
}

.footer__icp:hover {
  color: var(--neon-cyan);
}

.footer__icp svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 40px;
  }
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ---------- 代码块 ---------- */
.code-block {
  position: relative;
  background: #06080F;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-block: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.code-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
}

.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px 8px 20px;
  background: rgba(0, 229, 255, 0.04);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

.code-block__lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--neon-cyan);
  text-transform: uppercase;
}

.code-block__lang::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 8px var(--neon-cyan);
}

.code-block__copy {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
  letter-spacing: 0.1em;
}

.code-block__copy:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
}

.code-block__copy.is-copied {
  border-color: var(--neon-green);
  color: var(--neon-green);
}

.code-block pre {
  margin: 0;
  padding: 16px 20px;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.7;
  color: #C5D5E8;
  background: transparent;
}

.code-block code {
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: inherit;
  white-space: pre;
}

/* 简易高亮 */
.tok-kw { color: #FF79C6; }
.tok-str { color: #F1FA8C; }
.tok-num { color: #BD93F9; }
.tok-com { color: #6272A4; font-style: italic; }
.tok-fn  { color: #50FA7B; }
.tok-var { color: #8BE9FD; }
.tok-tag { color: #FF79C6; }
.tok-attr { color: #50FA7B; }
.tok-builtin { color: #8BE9FD; }

/* 内联代码 */
p code,
li code,
td code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.18);
  padding: 1px 6px;
  border-radius: 4px;
  word-break: break-word;
}

/* ---------- 提示框 ---------- */
.notice {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 20px;
  margin-block: 20px;
  border-radius: var(--radius-md);
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-left: 3px solid var(--neon-cyan);
  color: var(--text);
  font-size: 0.95rem;
}

.notice--tip {
  background: rgba(57, 255, 136, 0.06);
  border-color: rgba(57, 255, 136, 0.25);
  border-left-color: var(--neon-green);
}

.notice--warn {
  background: rgba(255, 209, 102, 0.06);
  border-color: rgba(255, 209, 102, 0.25);
  border-left-color: var(--neon-yellow);
}

.notice--danger {
  background: rgba(255, 85, 119, 0.06);
  border-color: rgba(255, 85, 119, 0.25);
  border-left-color: var(--danger);
}

.notice__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  color: var(--neon-cyan);
  margin-top: 2px;
}

.notice--tip .notice__icon { color: var(--neon-green); }
.notice--warn .notice__icon { color: var(--neon-yellow); }
.notice--danger .notice__icon { color: var(--danger); }

.notice__title {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  display: block;
}

.notice__body {
  color: var(--text-dim);
  line-height: 1.7;
}

/* ---------- 头像占位 ---------- */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #001318;
  font-family: var(--font-display);
  font-weight: 700;
  flex-shrink: 0;
  position: relative;
  box-shadow: 0 0 32px rgba(0, 229, 255, 0.3);
}

.avatar--lg {
  width: 128px;
  height: 128px;
  font-size: 2.6rem;
}

.avatar--md {
  width: 56px;
  height: 56px;
  font-size: 1.1rem;
}

.avatar--sm {
  width: 36px;
  height: 36px;
  font-size: 0.85rem;
}

.avatar__status {
  position: absolute;
  right: 6%;
  bottom: 6%;
  width: 22%;
  height: 22%;
  background: var(--neon-green);
  border: 2px solid var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--neon-green);
}

/* ---------- 统计数字 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-block: 24px;
}

.stat {
  padding: 20px;
  background: rgba(14, 17, 24, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: all var(--t-base) var(--ease-out);
}

.stat::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(0, 229, 255, 0.06), transparent 60%);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
}

.stat:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
}

.stat:hover::before {
  opacity: 1;
}

.stat__num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(120deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 8px;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ---------- 装饰分隔 ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  margin-block: 32px;
  border: 0;
}

.divider-text {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-block: 32px;
}

.divider-text::before,
.divider-text::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
}