/* 鏖战码途 · 站点样式 */

:root {
  --bg: #08090b;
  --bg-soft: #0b0d10;
  --card: #111318;
  --card-hover: #15181e;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e9ebee;
  --text-dim: #969ca6;
  --text-faint: #5c626b;
  --accent: #5eead4;
  --accent-dim: #2dd4bf;
  --accent-soft: rgba(94, 234, 212, 0.09);
  --radius: 14px;
  --radius-sm: 9px;
  --max: 1080px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

::selection {
  background: rgba(94, 234, 212, 0.22);
  color: #fff;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- 顶部导航 ---------- */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 9, 11, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(140deg, var(--accent), #4f7cf7);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: #04120f;
  flex: none;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo-text b {
  font-size: 14px;
  font-weight: 500;
}

.logo-text span {
  font-size: 10px;
  color: var(--text-faint);
  font-family: var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

.nav-links a {
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--text-dim);
  transition: color 0.18s, background 0.18s;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.045);
}

.nav-links a.active {
  color: var(--text);
}

.nav-cta {
  margin-left: 10px;
  padding: 7px 15px !important;
  border: 1px solid var(--border-strong);
  color: var(--text) !important;
  border-radius: 8px;
  font-size: 13.5px;
  transition: border-color 0.18s, background 0.18s;
}

.nav-cta:hover {
  border-color: var(--accent);
  background: var(--accent-soft) !important;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 96px 0 78px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -280px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 620px;
  background: radial-gradient(
    ellipse at center,
    rgba(94, 234, 212, 0.1),
    rgba(79, 124, 247, 0.05) 42%,
    transparent 68%
  );
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 60% 55% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 60% 55% at 50% 30%, #000 20%, transparent 78%);
  pointer-events: none;
  z-index: 0;
}

.hero .wrap {
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px 5px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 12.5px;
  color: var(--text-dim);
  margin-bottom: 26px;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.14);
  flex: none;
}

h1 {
  font-size: clamp(34px, 5.2vw, 54px);
  line-height: 1.18;
  font-weight: 500;
  letter-spacing: -0.025em;
  max-width: 760px;
}

h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero p.lead {
  margin-top: 22px;
  font-size: 16px;
  color: var(--text-dim);
  max-width: 560px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.18s, background 0.18s, border-color 0.18s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #04120f;
}

.btn-primary:hover {
  background: #7df0dd;
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

/* ---------- 通用区块 ---------- */

section {
  padding: 68px 0;
}

.sec-head {
  margin-bottom: 38px;
}

.sec-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 12px;
}

h2 {
  font-size: clamp(23px, 3vw, 30px);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.sec-head p {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 14.5px;
  max-width: 620px;
}

/* ---------- 卡片网格 ---------- */

.grid {
  display: grid;
  gap: 16px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-strong);
  background: var(--card-hover);
}

.card-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent-soft);
  border: 1px solid rgba(94, 234, 212, 0.16);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 15px;
  font-family: var(--mono);
}

.card h3 {
  font-size: 15.5px;
  font-weight: 500;
  margin-bottom: 8px;
}

.card p {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.72;
}

.card-meta {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-faint);
  font-family: var(--mono);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.pill {
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 11px;
  letter-spacing: 0.02em;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  flex: none;
}

.pill-live {
  border-color: rgba(94, 234, 212, 0.3);
  color: var(--accent);
  background: var(--accent-soft);
}

.pill-wip {
  border-color: rgba(247, 193, 193, 0.22);
  color: #e8a0a0;
}

/* ---------- 技术栈 ---------- */

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 4px;
}

.stack span {
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--mono);
  transition: color 0.18s, border-color 0.18s;
}

.stack span:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

/* ---------- 文章列表 ---------- */

.post-list {
  border-top: 1px solid var(--border);
}

.post {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--border);
  transition: padding-left 0.2s, background 0.2s;
}

.post:hover {
  padding-left: 12px;
  background: rgba(255, 255, 255, 0.015);
}

.post-date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  flex: none;
  width: 88px;
}

.post-title {
  font-size: 15px;
  flex: 1;
  min-width: 0;
}

.post:hover .post-title {
  color: var(--accent);
}

.post-tag {
  font-size: 12px;
  color: var(--text-faint);
  flex: none;
}

/* ---------- CTA ---------- */

.cta {
  margin: 40px 0 80px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(94, 234, 212, 0.055), rgba(79, 124, 247, 0.035) 60%, transparent);
  padding: 52px 44px;
  position: relative;
  overflow: hidden;
}

.cta h2 {
  max-width: 520px;
}

.cta p {
  margin-top: 14px;
  color: var(--text-dim);
  max-width: 520px;
  font-size: 14.5px;
}

.cta .hero-actions {
  margin-top: 28px;
}

/* ---------- 页脚 ---------- */

footer {
  border-top: 1px solid var(--border);
  padding: 34px 0 46px;
  font-size: 13px;
  color: var(--text-faint);
}

.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.foot-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.foot a:hover {
  color: var(--accent);
}

.foot-note {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: #4a4f57;
  line-height: 1.8;
}

/* ---------- 动画 ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 响应式 ---------- */

@media (max-width: 900px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .wrap {
    padding: 0 20px;
  }
  .nav-links a:not(.nav-cta) {
    display: none;
  }
  .hero {
    padding: 62px 0 52px;
  }
  .grid-4,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .cta {
    padding: 36px 24px;
    margin: 24px 0 56px;
  }
  .post {
    gap: 12px;
    flex-wrap: wrap;
  }
  .post-date {
    width: auto;
  }
  .post-tag {
    display: none;
  }
  section {
    padding: 48px 0;
  }
}

/* ---------- 子页面通用 ---------- */

.page-head {
  padding: 72px 0 12px;
}

.page-head h1 {
  font-size: clamp(30px, 4.4vw, 42px);
}

.page-head p {
  margin-top: 16px;
  color: var(--text-dim);
  max-width: 600px;
  font-size: 15px;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 44px 0;
}

.kv {
  display: grid;
  grid-template-columns: 128px 1fr;
  gap: 12px 20px;
  font-size: 14px;
}

.kv dt {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 12.5px;
  padding-top: 3px;
}

.kv dd {
  color: var(--text-dim);
}