/* 赏金大对决 - 超现实赛博游牧风格设计系统 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;500;700;900&family=Space+Grotesk:wght@400;700&display=swap');

:root {
  --ink-black: #0a0a0a;
  --neon-gold: #f7c948;
  --neon-gold-dim: #b8922e;
  --blood-orange: #e04e1a;
  --ash-purple: #3d2b4a;
  --dust-rose: #c4877a;
  --paper-white: #f2ede4;
  --gray-mist: #8a7f8f;
  --grid-gap: clamp(1rem, 2.5vw, 2.5rem);
  --border-thick: 3px solid var(--neon-gold);
  --font-display: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', sans-serif;
}

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

body {
  background-color: var(--ink-black);
  color: var(--paper-white);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.5;
  overflow-x: hidden;
}

/* container — 碎裂网格容器 */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--grid-gap);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

/* site-header — 浮空机械感 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid var(--neon-gold-dim);
  padding: 0 var(--grid-gap);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  max-width: 1440px;
  margin: 0 auto;
}

.logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 5vw, 2.8rem);
  color: var(--neon-gold);
  text-transform: uppercase;
  letter-spacing: 6px;
  position: relative;
  transition: 0.2s;
}

.logo::after {
  content: '⚡';
  color: var(--blood-orange);
  margin-left: 8px;
  font-size: 0.6em;
  display: inline-block;
  animation: pulseGlow 2s infinite alternate;
}

@keyframes pulseGlow {
  0% { text-shadow: 0 0 2px var(--neon-gold); }
  100% { text-shadow: 0 0 18px var(--blood-orange), 0 0 30px var(--neon-gold); }
}

.main-nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.main-nav a {
  color: var(--paper-white);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.05rem;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.25s;
  letter-spacing: 1px;
}

.main-nav a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--neon-gold);
  transition: width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.main-nav a:hover {
  color: var(--neon-gold);
}

.main-nav a:hover::before {
  width: 100%;
}

.nav-cta {
  background: transparent;
  border: 2px solid var(--blood-orange);
  color: var(--blood-orange);
  padding: 0.5rem 1.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.8rem;
  transition: 0.3s;
  cursor: pointer;
}

.nav-cta:hover {
  background: var(--blood-orange);
  color: var(--ink-black);
  box-shadow: 0 0 20px var(--blood-orange);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--neon-gold);
  font-size: 2rem;
  cursor: pointer;
}

/* hero — 倾斜错位野兽派 */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--grid-gap);
  padding: 4rem 0;
  align-items: center;
  position: relative;
  min-height: 80vh;
}

.hero::before {
  content: '';
  position: absolute;
  top: -5%;
  left: -5%;
  width: 40%;
  height: 60%;
  background: radial-gradient(circle at 20% 30%, var(--ash-purple), transparent 70%);
  opacity: 0.3;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  z-index: 2;
  transform: skewY(-1deg);
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--dust-rose);
  letter-spacing: 8px;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 1rem;
  border-left: 4px solid var(--neon-gold);
  padding-left: 1rem;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 10vw, 6rem);
  line-height: 0.95;
  color: var(--paper-white);
  text-transform: uppercase;
  margin-bottom: 1rem;
  letter-spacing: -2px;
}

.hero-content h1 span {
  color: var(--neon-gold);
  display: block;
  text-shadow: 6px 6px 0 var(--blood-orange);
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--gray-mist);
  max-width: 30ch;
  margin-bottom: 2rem;
  border-left: 2px solid var(--blood-orange);
  padding-left: 1.2rem;
}

.hero-buttons {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  z-index: 1;
  background: var(--ash-purple);
  min-height: 300px;
  background-image: repeating-linear-gradient(45deg, var(--neon-gold-dim) 0px, var(--neon-gold-dim) 2px, transparent 2px, transparent 12px);
  clip-path: polygon(8% 0, 100% 0, 100% 85%, 92% 100%, 0 100%, 0 15%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--ink-black);
  font-weight: 900;
  text-shadow: 2px 2px 0 var(--neon-gold);
  transition: clip-path 0.4s;
}

.hero-image:hover {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

/* buttons */
.btn {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  text-decoration: none;
  font-family: var(--font-display);
}

.btn-primary {
  background: var(--neon-gold);
  color: var(--ink-black);
  box-shadow: 8px 8px 0 var(--blood-orange);
}

.btn-primary:hover {
  transform: translate(-3px, -3px);
  box-shadow: 12px 12px 0 var(--blood-orange);
}

.btn-outline {
  background: transparent;
  color: var(--neon-gold);
  border: 2px solid var(--neon-gold);
}

.btn-outline:hover {
  background: var(--neon-gold);
  color: var(--ink-black);
}

/* section */
.section {
  padding: 5rem 0;
  border-top: 1px dashed var(--ash-purple);
  position: relative;
}

.section-label {
  font-family: var(--font-display);
  color: var(--dust-rose);
  letter-spacing: 6px;
  font-size: 0.75rem;
  text-transform: uppercase;
  display: inline-block;
  border-bottom: 2px solid var(--blood-orange);
  padding-bottom: 0.3rem;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 0.8rem;
  color: var(--paper-white);
}

.section-desc {
  color: var(--gray-mist);
  max-width: 60ch;
  font-size: 1.1rem;
}

/* cards-grid — 倾斜卡片 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--grid-gap);
  margin: 3rem 0;
}

.category-card {
  background: var(--ash-purple);
  padding: 2rem 1.5rem;
  border-left: 6px solid var(--neon-gold-dim);
  transform: rotate(0.5deg);
  transition: 0.3s;
  position: relative;
}

.category-card:hover {
  transform: rotate(0deg) translateY(-8px);
  border-left-color: var(--neon-gold);
  box-shadow: 12px 12px 0 rgba(247, 201, 72, 0.2);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
  filter: drop-shadow(2px 2px 0 var(--blood-orange));
}

.category-card h3 {
  font-weight: 700;
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.card-link {
  display: inline-block;
  margin-top: 1.2rem;
  color: var(--neon-gold);
  text-decoration: none;
  font-weight: 700;
  position: relative;
}

.card-link::after {
  content: ' →';
  transition: margin-left 0.2s;
}

.card-link:hover::after {
  margin-left: 8px;
}

/* feature-block */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin: 4rem 0;
}

.feature-image {
  background: var(--ash-purple);
  min-height: 280px;
  background: linear-gradient(135deg, var(--ash-purple) 0%, var(--ink-black) 80%);
  border: 1px solid var(--neon-gold-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: var(--neon-gold);
  clip-path: polygon(0 0, 100% 0, 100% 80%, 70% 100%, 0 100%);
}

.feature-text h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.feature-list {
  list-style: none;
  margin-top: 1.5rem;
}

.feature-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--ash-purple);
  display: flex;
  gap: 0.8rem;
  align-items: center;
}

.feature-list li::before {
  content: '▸';
  color: var(--blood-orange);
  font-weight: 700;
}

/* stats-bar */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  background: var(--ash-purple);
  padding: 2.5rem 1rem;
  margin: 3rem 0;
  border: 1px solid var(--neon-gold-dim);
  gap: 1rem;
}

.stat-item {
  text-align: center;
  flex: 1 1 150px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--neon-gold);
  line-height: 1;
}

.stat-label {
  color: var(--gray-mist);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.75rem;
  margin-top: 0.3rem;
}

/* content-wall — 错落杂志网格 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
}

.content-wall-item {
  background: var(--ink-black);
  border: 1px solid var(--gray-mist);
  padding: 2rem 1.5rem;
  transition: 0.3s;
  position: relative;
}

.content-wall-item:nth-child(odd) {
  transform: rotate(-1deg);
}

.content-wall-item:nth-child(even) {
  transform: rotate(1deg);
}

.content-wall-item:hover {
  border-color: var(--neon-gold);
  transform: scale(1.02) rotate(0deg);
  z-index: 5;
}

.content-wall-body h4 {
  font-weight: 700;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.content-wall-body p {
  color: var(--gray-mist);
}

/* faq */
.faq-list {
  max-width: 800px;
  margin: 2rem auto;
}

.faq-item {
  border-bottom: 1px solid var(--ash-purple);
  padding: 1.2rem 0;
  cursor: pointer;
}

.faq-item summary {
  font-weight: 700;
  font-size: 1.2rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.8rem;
  color: var(--neon-gold);
  transition: 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-answer {
  padding: 1rem 0 0 0;
  color: var(--gray-mist);
  line-height: 1.7;
}

/* cta-banner */
.cta-banner {
  background: linear-gradient(145deg, var(--blood-orange), var(--ash-purple));
  padding: 3rem 2rem;
  text-align: center;
  margin: 4rem 0;
  clip-path: polygon(0 0, 100% 0, 100% 85%, 95% 100%, 0 100%);
}

.cta-banner h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--paper-white);
  margin-bottom: 1rem;
}

.cta-banner .btn {
  background: var(--ink-black);
  color: var(--neon-gold);
  border: 2px solid var(--neon-gold);
  margin-top: 1rem;
}

/* site-footer */
.site-footer {
  background: var(--ink-black);
  border-top: 2px solid var(--neon-gold-dim);
  padding: 3rem var(--grid-gap) 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--grid-gap);
  max-width: 1440px;
  margin: 0 auto;
}

.footer-brand .logo {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.footer-col h4 {
  color: var(--neon-gold);
  margin-bottom: 1rem;
  letter-spacing: 2px;
  font-weight: 700;
}

.footer-col a {
  display: block;
  color: var(--gray-mist);
  text-decoration: none;
  padding: 0.3rem 0;
  transition: 0.2s;
}

.footer-col a:hover {
  color: var(--neon-gold);
  padding-left: 5px;
}

.footer-bottom {
  text-align: center;
  padding: 2rem 0 0;
  border-top: 1px solid var(--ash-purple);
  margin-top: 2rem;
  color: var(--gray-mist);
  font-size: 0.8rem;
}

/* utilities */
.text-accent {
  color: var(--neon-gold);
  font-weight: 700;
}

.text-center {
  text-align: center;
}

.seo-description {
  color: var(--gray-mist);
  font-size: 0.9rem;
  max-width: 70ch;
  margin: 1rem auto;
  line-height: 1.6;
}

/* 响应式 */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.97);
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 2px solid var(--neon-gold-dim);
  }

  .main-nav.active {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-image {
    min-height: 200px;
  }

  .feature-block {
    grid-template-columns: 1fr;
  }

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

  .stats-bar {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .header-inner {
    flex-wrap: wrap;
  }

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

  .content-wall {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 2.2rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}

/* 微交互动画 */
.category-card,
.content-wall-item,
.feature-image,
.hero-image {
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.logo:hover {
  transform: scale(1.03);
}

.nav-cta:active {
  transform: scale(0.95);
}