/* ===================================================================
   蛋挞云 (EggTartYun) - Neo-Brutalist Technical Grid & Monochrome-Amber Matrix
   纯原生 CSS | 零重型库依赖 | 极致秒开与硬核工程美学
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700;800&family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
  /* 调色板：Neo-Brutalist 规范 (默认：白天白纸暖乳白纸质模式) */
  --c-void: #09090b;
  --c-paper: #fffdf5;
  --c-yellow: #facc15;
  --c-orange: #ea580c;
  --c-zinc-100: #f4f4f5;
  --c-zinc-200: #e4e4e7;
  --c-zinc-300: #d4d4d8;
  --c-zinc-800: #27272a;
  --c-zinc-900: #18181b;
  --c-emerald: #10b981;

  /* 主题系统变量 (Light Mode) */
  --bg-main: var(--c-paper);
  --bg-card: #ffffff;
  --bg-header: rgba(255, 253, 245, 0.96);
  --bg-terminal: #09090b;
  --text-main: #09090b;
  --text-muted: #52525b;
  --text-subtle: #71717a;
  
  --border-width: 2px;
  --border-heavy: 3px;
  --border-color: #09090b;
  --border-subtle: #d4d4d8;
  
  --shadow-offset: 4px 4px 0px #09090b;
  --shadow-offset-hover: 6px 6px 0px #09090b;
  --shadow-yellow: 4px 4px 0px var(--c-yellow);
  --shadow-orange: 4px 4px 0px var(--c-orange);

  --accent-primary: var(--c-yellow);
  --accent-secondary: var(--c-orange);

  --font-mono: 'JetBrains Mono', Consolas, Monaco, monospace;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --trans-speed: 0.15s;
}

[data-theme="dark"] {
  /* 主题系统变量 (Dark Mode - Stark Void Black) */
  --bg-main: #09090b;
  --bg-card: #121217;
  --bg-header: rgba(9, 9, 11, 0.96);
  --bg-terminal: #050507;
  --text-main: #fafafa;
  --text-muted: #a1a1aa;
  --text-subtle: #71717a;

  --border-color: #3f3f46;
  --border-subtle: #27272a;

  --shadow-offset: 4px 4px 0px var(--c-yellow);
  --shadow-offset-hover: 6px 6px 0px var(--c-yellow);
  --shadow-yellow: 4px 4px 0px var(--c-yellow);
  --shadow-orange: 4px 4px 0px var(--c-orange);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* 结构网格背景辅助 */
.bg-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
}

[data-theme="dark"] .bg-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
}

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

ul, ol {
  list-style: none;
}

.mono {
  font-family: var(--font-mono);
}

/* 容器规范 */
.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ===================================================================
   Neo-Brutalist 核心组件：硬阴影、硬描边、挤压按下动效
   =================================================================== */

.brutalist-box {
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  transition: transform var(--trans-speed) ease, box-shadow var(--trans-speed) ease;
}

.brutalist-box:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-offset-hover);
}

.brutalist-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  padding: 12px 24px;
  background-color: var(--c-yellow);
  color: #09090b;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all var(--trans-speed) cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.brutalist-btn:hover {
  background-color: #ffd83d;
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px var(--border-color);
  color: #09090b;
}

.brutalist-btn:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0px var(--border-color);
}

.brutalist-btn-orange {
  background-color: var(--c-orange);
  color: #ffffff;
}

.brutalist-btn-orange:hover {
  background-color: #f97316;
  color: #ffffff;
}

.brutalist-btn-ghost {
  background-color: transparent;
  color: var(--text-main);
  background: var(--bg-card);
}

.brutalist-btn-ghost:hover {
  background-color: var(--c-zinc-100);
}

[data-theme="dark"] .brutalist-btn-ghost:hover {
  background-color: var(--c-zinc-800);
}

.brutalist-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--border-color);
  background: var(--c-paper);
  color: var(--c-void);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  box-shadow: 2px 2px 0px var(--border-color);
}

[data-theme="dark"] .brutalist-tag {
  background: #1c1c24;
  color: #fafafa;
}

/* ===================================================================
   顶部导航栏 (Header)
   =================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-header);
  border-bottom: var(--border-width) solid var(--border-color);
  backdrop-filter: blur(10px);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: -0.5px;
}

.brand-logo-img {
  height: 38px;
  width: auto;
  display: block;
}

.brand-stamp {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 2px 6px;
  background: var(--c-yellow);
  color: #09090b;
  border: 1px solid var(--border-color);
  font-weight: 800;
  letter-spacing: 0.5px;
}

/* 导航目录：首页 + 各个锚点 + 推荐资讯 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 700;
  padding: 6px 10px;
  border: 1px solid transparent;
  color: var(--text-main);
  transition: all var(--trans-speed) ease;
  position: relative;
}

.nav-link:hover {
  background-color: var(--c-yellow);
  color: #09090b;
  border: 1px solid var(--border-color);
  box-shadow: 2px 2px 0px var(--border-color);
  transform: translate(-1px, -1px);
}

.nav-link.nav-news-badge {
  background: var(--c-orange);
  color: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: 2px 2px 0px var(--border-color);
  font-weight: 800;
}

.nav-link.nav-news-badge:hover {
  background: #f97316;
  color: #ffffff;
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0px var(--border-color);
}

/* 右侧工具栏：精致昼夜切换 + CTA */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  box-shadow: 3px 3px 0px var(--border-color);
  cursor: pointer;
  color: var(--text-main);
  transition: all var(--trans-speed) ease;
}

.theme-toggle-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px var(--c-yellow);
  background-color: var(--c-yellow);
  color: #09090b;
}

.theme-toggle-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0px var(--border-color);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
}

.icon-sun { display: block; }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ===================================================================
   主视觉区 (Hero Section) & Canvas 互动网格
   =================================================================== */

.hero-neo {
  position: relative;
  padding: 70px 0 50px;
  border-bottom: var(--border-heavy) solid var(--border-color);
  overflow: hidden;
}

#heroGridCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1040px;
  margin: 0 auto;
  text-align: center;
}

.hero-meta-strip {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  padding: 6px 16px;
  box-shadow: 3px 3px 0px var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-meta-dot {
  width: 10px;
  height: 10px;
  background-color: var(--c-emerald);
  border: 1px solid var(--border-color);
}

/* 巨幅大标题：包含品牌名与零抖动技术标识 */
.hero-headline {
  font-size: 3.3rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
  color: var(--text-main);
  text-transform: uppercase;
}

.hero-headline .brand-highlight {
  display: inline-block;
  background: var(--c-yellow);
  color: #09090b;
  padding: 2px 14px;
  border: var(--border-width) solid var(--border-color);
  box-shadow: 4px 4px 0px var(--border-color);
  transform: rotate(-1deg);
  margin-right: 8px;
}

.hero-subheadline {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--c-orange);
  margin-bottom: 18px;
  display: block;
}

.hero-lead {
  font-size: 1.12rem;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 36px;
}

.hero-cta-cluster {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

/* 快速状态指标栏 */
.hero-spec-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 960px;
  margin: 0 auto;
}

.spec-strip-card {
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  padding: 12px 16px;
  text-align: left;
  box-shadow: 3px 3px 0px var(--border-color);
}

.spec-strip-card .spec-k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.spec-strip-card .spec-v {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
}

/* ===================================================================
   双轨对向跑马灯 (Dual-Track Counter-Rotating Marquee)
   =================================================================== */

.marquee-block {
  border-bottom: var(--border-heavy) solid var(--border-color);
  background: var(--c-void);
  color: #facc15;
  overflow: hidden;
  user-select: none;
}

.marquee-track-1 {
  background: var(--c-yellow);
  color: #09090b;
  border-bottom: 1px solid #09090b;
  padding: 8px 0;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
}

.marquee-track-2 {
  background: #09090b;
  color: #fafafa;
  padding: 9px 0;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  display: flex;
}

.marquee-inner-left {
  display: inline-flex;
  animation: marquee-scroll-left 35s linear infinite;
}

.marquee-inner-right {
  display: inline-flex;
  animation: marquee-scroll-right 38s linear infinite;
}

.marquee-block:hover .marquee-inner-left,
.marquee-block:hover .marquee-inner-right {
  animation-play-state: paused;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 0 24px;
}

.marquee-sep {
  color: var(--c-orange);
  font-weight: 900;
}

@keyframes marquee-scroll-left {
  0% { transform: translateX(0%); }
  100% { transform: translateX(-50%); }
}

@keyframes marquee-scroll-right {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0%); }
}

/* ===================================================================
   交互式 CLI Ping 节点沙盒 (Interactive CLI Ping Sandbox)
   =================================================================== */

.section-cli {
  padding: 70px 0;
  border-bottom: var(--border-heavy) solid var(--border-color);
}

.section-title-wrap {
  text-align: left;
  margin-bottom: 36px;
  border-left: 6px solid var(--c-yellow);
  padding-left: 16px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--c-orange);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.section-h2 {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.terminal-window {
  background: var(--bg-terminal);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 6px 6px 0px var(--c-yellow);
  border-radius: 0;
  overflow: hidden;
}

.terminal-header {
  background: #18181b;
  border-bottom: var(--border-width) solid #27272a;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border: 1px solid #000;
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #a1a1aa;
  font-weight: 700;
}

.terminal-controls {
  background: #121215;
  border-bottom: var(--border-width) solid #27272a;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.terminal-btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 8px 14px;
  background: #27272a;
  color: #fafafa;
  border: 1px solid #3f3f46;
  cursor: pointer;
  transition: all 0.15s ease;
}

.terminal-btn:hover, .terminal-btn.active {
  background: var(--c-yellow);
  color: #09090b;
  border-color: #09090b;
  box-shadow: 2px 2px 0px var(--c-yellow);
}

.terminal-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.7;
  color: #38bdf8;
  min-height: 220px;
  max-height: 340px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.terminal-body .term-green { color: #4ade80; }
.terminal-body .term-yellow { color: #facc15; }
.terminal-body .term-dim { color: #71717a; }

/* ===================================================================
   产品核心优势：3个 Neo-Brutalist 规格式图文卡片
   =================================================================== */

.section-features {
  padding: 70px 0;
  border-bottom: var(--border-heavy) solid var(--border-color);
  background: var(--bg-main);
}

.features-grid-brutal {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-brutal-card {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 5px 5px 0px var(--border-color);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--trans-speed) ease;
}

.feature-brutal-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0px var(--c-yellow);
}

.card-spec-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 12px;
  margin-bottom: 18px;
}

.card-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--c-orange);
}

.feature-brutal-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
}

.feature-brutal-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* 规格式属性表格 (Spec Matrix Table) */
.spec-mini-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
}

.spec-mini-table td {
  padding: 6px 10px;
  border: 1px solid var(--border-subtle);
}

.spec-mini-table tr td:first-child {
  background: var(--c-zinc-100);
  font-weight: 700;
  width: 40%;
  color: var(--c-void);
}

[data-theme="dark"] .spec-mini-table tr td:first-child {
  background: var(--c-zinc-900);
  color: #fafafa;
}

/* ===================================================================
   流媒体图卡 & AI 支持图卡
   =================================================================== */

.section-media-ai {
  padding: 70px 0;
  border-bottom: var(--border-heavy) solid var(--border-color);
}

.media-ai-brutal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.matrix-block {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 6px 6px 0px var(--border-color);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.matrix-badge-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.matrix-block h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-main);
}

.matrix-block p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 22px;
}

.tag-cloud-brutal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag-cloud-brutal .tag-item {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 12px;
  background: var(--c-paper);
  border: 2px solid var(--border-color);
  color: var(--text-main);
  box-shadow: 2px 2px 0px var(--border-color);
}

[data-theme="dark"] .tag-cloud-brutal .tag-item {
  background: #18181b;
}

.tag-cloud-brutal .tag-item.highlight-tag {
  background: var(--c-yellow);
  color: #09090b;
}

.matrix-telemetry-row {
  margin-top: auto;
  padding-top: 16px;
  border-top: 2px dashed var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

/* ===================================================================
   套餐价格对比表 (Pricing) - 参考真实套餐
   =================================================================== */

.section-pricing {
  padding: 70px 0;
  border-bottom: var(--border-heavy) solid var(--border-color);
  background: var(--bg-main);
}

.pricing-brutal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-brutal-card {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 5px 5px 0px var(--border-color);
  padding: 34px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--trans-speed) ease;
}

.pricing-brutal-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0px var(--border-color);
}

.pricing-brutal-card.featured {
  border-color: var(--c-orange);
  box-shadow: 6px 6px 0px var(--c-orange);
  background: var(--bg-card);
}

.pricing-hot-flag {
  position: absolute;
  top: -14px;
  right: 18px;
  background: var(--c-orange);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 900;
  padding: 4px 12px;
  border: 2px solid #09090b;
  box-shadow: 2px 2px 0px #09090b;
  text-transform: uppercase;
}

.tier-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-subtle);
  font-weight: 700;
}

.pricing-brutal-card h3 {
  font-size: 1.4rem;
  font-weight: 900;
  margin: 4px 0 10px;
}

.tier-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  min-height: 40px;
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
}

.price-currency {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--c-orange);
}

.price-val {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
}

.price-cycle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-subtle);
}

.pricing-feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  line-height: 1.4;
}

.pricing-feature-item svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--c-emerald);
}

.pricing-action-btn {
  width: 100%;
}

/* ===================================================================
   用户评价 (User Reviews)
   =================================================================== */

.section-testimonials {
  padding: 70px 0;
  border-bottom: var(--border-heavy) solid var(--border-color);
}

.testimonials-brutal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimonial-brutal-card {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 4px 4px 0px var(--border-color);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.test-user-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.test-avatar-box {
  width: 44px;
  height: 44px;
  background: var(--c-yellow);
  color: #09090b;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 1rem;
}

.test-user-name {
  font-weight: 800;
  font-size: 0.98rem;
}

.test-user-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.test-body-text {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-main);
  flex-grow: 1;
  margin-bottom: 16px;
}

.test-footer-telemetry {
  border-top: 1px solid var(--border-color);
  padding-top: 10px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-subtle);
}

/* ===================================================================
   常见问题解答 (FAQ)
   =================================================================== */

.section-faq {
  padding: 70px 0;
  border-bottom: var(--border-heavy) solid var(--border-color);
  background: var(--bg-main);
}

.faq-brutal-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-brutal-item {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 4px 4px 0px var(--border-color);
  transition: all 0.2s ease;
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  cursor: pointer;
  font-family: var(--font-sans);
}

.faq-toggle-icon {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 900;
  width: 28px;
  height: 28px;
  border: 2px solid var(--border-color);
  background: var(--c-yellow);
  color: #09090b;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-content-box {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 22px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-brutal-item.active .faq-content-box {
  max-height: 300px;
  padding: 0 22px 20px 22px;
  border-top: 2px dashed var(--border-color);
}

.faq-brutal-item.active .faq-toggle-icon {
  background: var(--c-orange);
  color: #ffffff;
}

/* ===================================================================
   底部页脚 Footer - 严格仅保留四个指定标题在新窗口打开
   =================================================================== */

.site-footer {
  background: var(--bg-card);
  padding: 48px 0 32px;
  border-top: var(--border-heavy) solid var(--border-color);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-nav-link {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  padding: 6px 14px;
  border: 2px solid var(--border-color);
  background: var(--bg-main);
  box-shadow: 3px 3px 0px var(--border-color);
  transition: all var(--trans-speed) ease;
}

.footer-nav-link:hover {
  background: var(--c-yellow);
  color: #09090b;
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--border-color);
}

.footer-copyright {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-subtle);
  border-top: 1px dashed var(--border-color);
  padding-top: 20px;
  max-width: 640px;
  margin: 0 auto;
}

/* ===================================================================
   推荐资讯页面及子页面样式
   =================================================================== */

.news-hero-banner {
  padding: 60px 0 40px;
  border-bottom: var(--border-heavy) solid var(--border-color);
  background: var(--c-yellow);
  color: #09090b;
}

.news-hero-banner h1 {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 10px;
}

.news-article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 60px 0;
}

.news-card {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 5px 5px 0px var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px;
  transition: all var(--trans-speed) ease;
}

.news-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0px var(--c-yellow);
}

.news-card-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-orange);
  margin-bottom: 8px;
}

.news-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-main);
}

.news-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* ===================================================================
   通用内容卡片样式 (用于关于我们、服务条款、隐私政策等页面)
   =================================================================== */

.subpage-hero {
  padding: 50px 0 30px;
  border-bottom: var(--border-heavy) solid var(--border-color);
  background: var(--c-yellow);
  color: #09090b;
  text-align: center;
}

.subpage-hero h1 {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.subpage-hero p {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
}

.subpage-content {
  padding: 60px 0;
}

.subpage-card {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 6px 6px 0px var(--border-color);
  padding: 40px;
  max-width: 920px;
  margin: 0 auto;
}

.subpage-card h2 {
  font-size: 1.4rem;
  font-weight: 900;
  margin-top: 32px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
  color: var(--text-main);
}

.subpage-card h2:first-of-type {
  margin-top: 0;
}

.subpage-card p {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.subpage-card ul {
  list-style: square;
  padding-left: 24px;
  margin-bottom: 20px;
}

.subpage-card li {
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* ===================================================================
   SEO 文章详情页专属样式 (Article Detail & Neo-Brutalist Layout)
   =================================================================== */

.article-page-wrap {
  padding: 50px 0 80px;
}

.article-header {
  border: var(--border-heavy) solid var(--border-color);
  background: var(--bg-card);
  box-shadow: 6px 6px 0px var(--border-color);
  padding: 40px;
  margin-bottom: 36px;
}

.article-meta-tags {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.article-h1 {
  font-size: 2.3rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.article-summary-box {
  background: var(--c-paper);
  border-left: 6px solid var(--c-yellow);
  padding: 16px 20px;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

[data-theme="dark"] .article-summary-box {
  background: #141419;
}

/* 目录 (TOC) */
.article-toc-box {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 4px 4px 0px var(--c-yellow);
  padding: 24px 28px;
  margin-bottom: 40px;
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 900;
  color: var(--c-orange);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 8px;
}

.toc-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

.toc-link:hover {
  color: var(--c-orange);
}

/* 文章正文 */
.article-content {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 6px 6px 0px var(--border-color);
  padding: 44px;
  margin-bottom: 40px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-main);
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 900;
  margin-top: 42px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
  color: var(--text-main);
}

.article-content h2:first-of-type {
  margin-top: 0;
}

.article-content h3 {
  font-size: 1.28rem;
  font-weight: 800;
  margin-top: 28px;
  margin-bottom: 14px;
  color: var(--text-main);
}

.article-content p {
  margin-bottom: 20px;
  color: var(--text-muted);
}

.article-content strong {
  color: var(--text-main);
  font-weight: 700;
}

.article-content a.internal-link {
  color: var(--c-orange);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: all 0.2s ease;
}

.article-content a.internal-link:hover {
  background: var(--c-yellow);
  color: #09090b;
}

.article-content ul, .article-content ol {
  padding-left: 24px;
  margin-bottom: 24px;
}

.article-content li {
  margin-bottom: 10px;
  color: var(--text-muted);
  line-height: 1.8;
}

.article-content blockquote {
  border-left: 4px solid var(--c-orange);
  background: var(--c-paper);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-style: italic;
  color: var(--text-muted);
}

[data-theme="dark"] .article-content blockquote {
  background: #18181f;
}

.article-cta-banner {
  background: var(--c-yellow);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 4px 4px 0px var(--border-color);
  padding: 24px;
  margin: 36px 0;
  text-align: center;
  color: #09090b;
}

.article-cta-banner h4 {
  font-size: 1.35rem;
  font-weight: 900;
  margin-bottom: 10px;
}

.article-cta-banner p {
  color: #27272a;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

/* FAQ 章节 */
.article-faq-section {
  margin-top: 46px;
  padding-top: 28px;
  border-top: 2px dashed var(--border-color);
}

.faq-card-unit {
  background: var(--c-paper);
  border: 2px solid var(--border-color);
  padding: 20px 24px;
  margin-bottom: 18px;
  box-shadow: 3px 3px 0px var(--border-color);
}

[data-theme="dark"] .faq-card-unit {
  background: #15151c;
}

.faq-card-unit h4 {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.faq-card-unit p {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 相关阅读互链 */
.related-posts-section {
  background: var(--bg-card);
  border: var(--border-heavy) solid var(--border-color);
  box-shadow: 6px 6px 0px var(--border-color);
  padding: 36px;
}

.related-posts-section h3 {
  font-size: 1.35rem;
  font-weight: 900;
  margin-bottom: 20px;
  color: var(--text-main);
  border-left: 5px solid var(--c-yellow);
  padding-left: 12px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-item {
  border: 2px solid var(--border-color);
  padding: 16px;
  background: var(--c-paper);
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
}

[data-theme="dark"] .related-item {
  background: #121217;
}

.related-item:hover {
  background: var(--c-yellow);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0px var(--border-color);
}

.related-item:hover a {
  color: #09090b;
}

.related-title {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.45;
}

@media (max-width: 768px) {
  .article-header { padding: 24px 18px; }
  .article-h1 { font-size: 1.65rem; }
  .article-content { padding: 22px 16px; font-size: 0.98rem; }
  .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .features-grid-brutal,
  .pricing-brutal-grid,
  .testimonials-brutal-grid,
  .news-article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-spec-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-container {
    height: 64px;
  }

  .nav-links {
    display: none; /* 移动端隐藏过长导航项，保持清爽硬朗大按键 */
  }

  .hero-headline {
    font-size: 2.1rem;
    letter-spacing: -0.5px;
  }

  .hero-headline .brand-highlight {
    display: inline-block;
    margin-bottom: 6px;
  }

  .hero-subheadline {
    font-size: 1.05rem;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-cta-cluster {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-cluster .brutalist-btn {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
  }

  .hero-spec-strip,
  .features-grid-brutal,
  .media-ai-brutal-grid,
  .pricing-brutal-grid,
  .testimonials-brutal-grid,
  .news-article-grid {
    grid-template-columns: 1fr; /* 完美单栏显示 */
  }

  .subpage-card {
    padding: 24px 18px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 14px;
    width: 100%;
  }

  .footer-nav-link {
    width: 100%;
    text-align: center;
  }
}