/* ========================================================
   野泥巴科技 · 野擎GEO — 深色杂志风重构版
   ======================================================== */

:root {
  /* 星空底色体系：深蓝 → 深紫 */
  --bg-deep: #0a0d1f;           /* 深蓝底（主背景） */
  --bg-deep-purple: #110b26;    /* 深紫底（交替区块） */
  --bg-elevated: #111529;       /* 略亮的蓝紫（抬高面） */
  --bg-card: rgba(20, 24, 48, 0.6);   /* 卡片底（半透明） */
  --bg-card-hover: rgba(30, 35, 65, 0.75);
  --bg-card-solid: #141830;     /* 实色卡片底 */

  /* 星空白描边与分隔线 */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --divider: rgba(255, 255, 255, 0.06);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.45);
  --text-quaternary: rgba(255, 255, 255, 0.22);

  --accent: #ff5722;
  --accent-hover: #ff7043;
  --accent-dim: rgba(255, 87, 34, 0.15);
  --accent-border: rgba(255, 87, 34, 0.3);

  --cyan-accent: #00e5ff;
  --cyan-dim: rgba(0, 229, 255, 0.12);

  --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background:
    /* 顶部细微蓝光晕 */
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(30, 64, 175, 0.25) 0%, transparent 60%),
    /* 右上紫粉色光晕 */
    radial-gradient(ellipse 60% 40% at 85% 10%, rgba(109, 40, 217, 0.2) 0%, transparent 60%),
    /* 中部银河光带 */
    radial-gradient(ellipse 70% 30% at 50% 45%, rgba(76, 29, 149, 0.15) 0%, transparent 70%),
    /* 底部紫蓝过渡 */
    radial-gradient(ellipse 90% 60% at 50% 100%, rgba(55, 28, 120, 0.3) 0%, transparent 70%),
    /* 底层深蓝 → 深紫渐变 */
    linear-gradient(180deg, #0a0d1f 0%, #0d0a24 35%, #100c2a 65%, #0c0a22 100%);
  background-attachment: fixed;
  background-color: #0a0d1f;
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* 细腻星点层（纯CSS radial-gradient点阵，性能高） */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    /* 稀疏小星点（1px） */
    radial-gradient(1px 1px at 20px 30px, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 60px 80px, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 120px 50px, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 180px 110px, rgba(255,255,255,0.35), transparent),
    radial-gradient(1px 1px at 240px 20px, rgba(255,255,255,0.55), transparent),
    radial-gradient(1px 1px at 300px 90px, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 360px 140px, rgba(255,255,255,0.45), transparent),
    radial-gradient(1px 1px at 420px 60px, rgba(255,255,255,0.4), transparent),
    /* 少量稍亮星点（2px） */
    radial-gradient(2px 2px at 90px 160px, rgba(255,255,255,0.7), transparent),
    radial-gradient(2px 2px at 280px 200px, rgba(255,255,255,0.6), transparent),
    radial-gradient(2px 2px at 480px 40px, rgba(200,220,255,0.7), transparent),
    radial-gradient(2px 2px at 540px 180px, rgba(255,255,255,0.55), transparent),
    /* 微带蓝紫色的星点，呼应背景 */
    radial-gradient(1.5px 1.5px at 150px 200px, rgba(147, 197, 253, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 400px 10px, rgba(216, 180, 254, 0.5), transparent);
  background-size: 600px 260px;
  background-repeat: repeat;
  opacity: 0.7;
}

::selection { background: var(--accent); color: #fff; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #0a0d1f; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.35); }

.app { position: relative; min-height: 100vh; z-index: 1; }

.container-narrow {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 48px;
}

/* ========================================================
   右侧垂直页码导航
   ======================================================== */
.vert-pager {
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vert-pager-item {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
  transition: all 0.3s var(--ease);
  color: var(--text-tertiary);
  font-family: var(--font-display);
  text-align: right;
  justify-content: flex-end;
  width: 100%;
}

.vert-pager-num {
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.5px;
  transition: all 0.3s var(--ease);
  min-width: 24px;
  text-align: right;
}

.vert-pager-label {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.vert-pager-item:hover {
  color: var(--text-secondary);
}
.vert-pager-item:hover .vert-pager-label {
  opacity: 1;
  transform: translateX(0);
}

.vert-pager-item.active {
  color: var(--accent);
}
.vert-pager-item.active .vert-pager-num {
  font-size: 20px;
  font-weight: 700;
}

/* ========================================================
   悬浮吉祥物 · 随页面浮动，点击回到顶部
   ======================================================== */
.mascot-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 84px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  z-index: 85;
  opacity: 0;
  visibility: hidden;
  transform: translateY(18px) scale(0.92);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease), visibility 0.4s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.mascot-top.show {
  opacity: 0.92;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.mascot-top.show:hover {
  opacity: 1;
  transform: translateY(-6px) scale(1.05);
}
.mascot-top img {
  width: 100%;
  height: auto;
  display: block;
  animation: mascotFloat 5s ease-in-out infinite;
  animation-delay: -1s;
  filter: drop-shadow(0 12px 22px rgba(0, 0, 0, 0.35));
}
.mascot-top-tip {
  position: absolute;
  right: calc(100% + 6px);
  bottom: 22px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(10, 13, 31, 0.9);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 1px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  pointer-events: none;
}
.mascot-top.show:hover .mascot-top-tip {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================================
   顶部极简导航
   ======================================================== */
.topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  transition: all 0.3s var(--ease);
  background: transparent;
}

.topnav.scrolled {
  background: rgba(10, 13, 31, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.topnav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topnav-left {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.nav-logo-static {
  width: 44px;
  height: 44px;
  object-fit: cover;
  object-position: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  display: block;
  flex-shrink: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  font-family: var(--font-display);
}

.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-main { font-size: 15px; font-weight: 700; color: #fff; letter-spacing: 0.5px; }
.brand-sub { font-size: 9px; letter-spacing: 2px; color: var(--text-tertiary); margin-top: 3px; text-transform: uppercase; }

.topnav-mid {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
}

.topnav-link {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0 14px;
  height: 100%;
  font-size: 13px;
  font-weight: 400;
  font-family: var(--font-body);
  cursor: pointer;
  transition: color 0.2s;
  position: relative;
}

.topnav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: calc(100% - 28px);
  height: 2px;
  background: var(--accent);
  transition: transform 0.3s var(--ease);
}

.topnav-link:hover {
  color: #fff;
}
.topnav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.topnav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topnav-icon-btn {
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}
.topnav-icon-btn:hover {
  color: #fff;
  border-color: var(--text-secondary);
}

.topnav-cta {
  height: 32px;
  padding: 0 18px;
  background: var(--accent);
  border: none;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.2s;
}
.topnav-cta:hover {
  background: var(--accent-hover);
}

.topnav-divider {
  position: absolute;
  bottom: 0;
  left: 48px;
  right: 48px;
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: #fff;
  transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* ========================================================
   Hero - 3张全屏幻灯片
   ======================================================== */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
}

/* 轮播：四张幻灯片全部常驻渲染，靠 z-index 互相遮挡（active 在最上，背景不透明，
   下层完全看不见）。这样浏览器在首帧就把 LCP 锁定为最大的那条标题，而不是被
   每 2.5 秒一次的切换一路推到 5 秒之后 —— 自动轮播与 LCP 只能这样共存。 */
.hero-slide {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 1;
  pointer-events: none;
}

.hero-slide.active {
  z-index: 3;
  pointer-events: auto;
}

/* 第一次切换之后交回原本的淡入淡出：非激活页透明，但「上一张」单独保持不透明
   垫在下面（z-index 2），新的那张才能平滑叠上来，做出交叉淡化。 */
.hero-section.started .hero-slide {
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.hero-section.started .hero-slide.prev {
  z-index: 2;
  opacity: 1;
  transition: none;
}

.hero-section.started .hero-slide.active {
  opacity: 1;
  animation: heroSlideIn 0.42s var(--ease) both;
}

@keyframes heroSlideIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.hero-bg {
  position: absolute;
  inset: -3%;
  z-index: 0;
  transform: translate(var(--mx, 0), var(--my, 0)) scale(1.05);
  transition: transform 0.6s ease-out;
}
.hero-bg picture {
  display: block;
  width: 100%;
  height: 100%;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5) contrast(1.05);
  transform: scale(1.05);
  transition: transform 0.8s ease-out;
}
.hero-slide.active .hero-bg img {
  animation: kenBurns 8s var(--ease) forwards;
}
@keyframes kenBurns {
  from { transform: scale(1.05) translate(0, 0); }
  to { transform: scale(1.12) translate(-2%, -1%); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 13, 31, 0.3) 0%, rgba(10, 10, 30, 0.7) 100%),
    linear-gradient(90deg, rgba(10, 13, 31, 0.6) 0%, transparent 55%);
}
/* 幻灯片1（星空图）：轻蒙层，保留银河美感 */
.hero-slide.cyan .hero-overlay {
  background:
    linear-gradient(180deg, rgba(10, 13, 31, 0.2) 0%, rgba(8, 8, 24, 0.55) 100%),
    linear-gradient(90deg, rgba(10, 13, 31, 0.5) 0%, transparent 50%);
}
.hero-slide.cyan .hero-bg img {
  filter: brightness(0.75) contrast(1.08);
}
/* 幻灯片3（增长网络图）：稍重蒙层，保证左侧文字清晰 */
.hero-slide.amber .hero-overlay {
  background:
    linear-gradient(180deg, rgba(10, 13, 31, 0.35) 0%, rgba(10, 10, 30, 0.8) 100%),
    linear-gradient(90deg, rgba(10, 13, 31, 0.75) 0%, rgba(10, 13, 31, 0.3) 55%, transparent 75%);
}
.hero-slide.amber .hero-bg img {
  filter: brightness(0.55) contrast(1.1) saturate(1.05);
}

.hero-content-wrap {
  position: relative;
  z-index: 2;
  height: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 80px 48px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* 1.5s/张的节奏：入场动画整体压缩，0.75s 内全部就位，留出静止阅读时间 */
.hero-slide.active .hero-eyebrow { animation: slideUp 0.4s var(--ease) 0.05s both; }
.hero-slide.active .hero-title { animation: slideUp 0.5s var(--ease) 0.1s both; }
.hero-slide.active .hero-sub { animation: slideUp 0.4s var(--ease) 0.2s both; }
.hero-slide.active .hero-stat-block { animation: slideUp 0.4s var(--ease) 0.24s both; }
.hero-slide.active .hero-keywords { animation: slideUp 0.4s var(--ease) 0.27s both; }
.hero-slide.active .btn-hero-cta { animation: slideUp 0.4s var(--ease) 0.3s both; }
.hero-slide.active .hero-hint { animation: fadeIn 0.4s ease 0.35s both; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  color: var(--text-tertiary);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(44px, 7vw, 96px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -2px;
  color: #fff;
  margin-bottom: 28px;
  /* 1040 而非 900：第 2 张的「出现在豆包等AI大模型」在 900 下会多折一行，
     标题比首张高 50%，轮播切到它就会把 LCP 顶到 2.5s 之后。放宽后四张等高，
     其余三张本来就没超过 900，换行位置不变。 */
  max-width: 1040px;
}
.hero-title.title-small {
  font-size: clamp(36px, 5.5vw, 72px);
  letter-spacing: -1.5px;
}

.accent-orange { color: var(--accent); }
.accent-cyan { color: var(--cyan-accent); }
.accent-amber { color: #ffb547; }

.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 36px;
  font-weight: 400;
}

.hero-stat-block {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  max-width: 520px;
}
.big-stat {
  font-size: clamp(56px, 10vw, 120px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -3px;
  color: var(--accent);
  font-family: var(--font-display);
}
.big-stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  padding-bottom: 14px;
  max-width: 200px;
  line-height: 1.5;
}

.hero-keywords {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.kw-item {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}
.kw-item:first-child {
  color: var(--text-tertiary);
  border-bottom-color: var(--border);
}
.kw-item:last-child {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.btn-hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.3s var(--ease);
  align-self: flex-start;
  margin-bottom: 40px;
}
.btn-hero-cta:hover {
  background: var(--accent-hover);
  padding-right: 36px;
  gap: 16px;
}

.hero-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* 底部圆点指示器 */
.hero-dots {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 12px;
}
.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  border: none;
  cursor: pointer;
  transition: all 0.4s var(--ease);
  padding: 0;
}
.hero-dot.active {
  background: var(--accent);
  width: 14px;
  height: 14px;
  box-shadow: 0 0 14px rgba(255, 87, 34, 0.7);
}

/* 右侧页码 */
.hero-pager {
  position: absolute;
  right: 48px;
  bottom: 80px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  color: var(--text-tertiary);
}
.hero-pager-current {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -1px;
}
.hero-pager-line {
  width: 40px;
  height: 1px;
  background: var(--border-strong);
}
.hero-pager-total {
  font-size: 14px;
  font-weight: 400;
}

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 48px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  font-family: var(--font-display);
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--text-tertiary), transparent);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* ========================================================
   通用 Section 样式
   ======================================================== */
.section {
  padding: 88px 0;
  position: relative;
  background: transparent;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  font-family: var(--font-display);
}
.section-label.right {
  justify-content: flex-end;
}
.label-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
}
.label-text {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 4px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  position: relative;
  padding-left: 20px;
}
.label-text::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--text-tertiary);
}
.section-label.right .label-text {
  padding-left: 0;
  padding-right: 20px;
}
.section-label.right .label-text::before {
  left: auto;
  right: 0;
}

.crossed {
  position: relative;
  color: var(--text-tertiary);
  text-decoration: none;
}
.crossed::after {
  content: '';
  position: absolute;
  left: -4px;
  right: -4px;
  top: 50%;
  height: 2px;
  background: var(--text-tertiary);
  transform: rotate(-4deg);
}

/* ========================================================
   交互式动作幻灯片
   ======================================================== */
/* ========================================================
   LOGO 墙
   ======================================================== */
.logos-section {
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(17, 11, 38, 0.35) 100%);
  padding: 88px 0;
}

.logos-block {
  margin-bottom: 64px;
}
.logos-block:last-child { margin-bottom: 0; }

.logos-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 36px;
  letter-spacing: -0.8px;
  max-width: 600px;
}
.logos-title.align-right {
  margin-left: auto;
  text-align: right;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.logo-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 28px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.3s var(--ease);
  min-height: 88px;
}
.logo-item:hover {
  background: var(--bg-card-hover);
}

.logo-icon-wrap {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  font-family: var(--font-display);
  letter-spacing: -0.3px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.llm-icon {
  border-radius: 50%;
  font-size: 16px;
}

.media-icon {
  border-radius: 10px;
  font-size: 18px;
}

.brand-logo-wrap {
  width: 48px;
  height: 48px;
  background: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.logo-item:hover .brand-logo-wrap {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand-logo-img img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  display: block;
  object-fit: contain;
}
.logo-fallback {
  font-size: 20px;
  font-weight: 700;
  color: currentColor;
}

.logo-meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.logo-name {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.logo-brand {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* ========================================================
   什么是 GEO / 时代对比
   ======================================================== */
.geo-section {
  background: linear-gradient(180deg, rgba(17, 11, 38, 0.4) 0%, rgba(10, 13, 31, 0) 100%);
}

.geo-head { margin-bottom: 48px; }

.geo-head-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  justify-content: space-between;
}
.geo-head-text { flex: 1; }

.geo-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: -1.5px;
  max-width: 700px;
}

.geo-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 560px;
}

.geo-compare {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.compare-header-row {
  display: grid;
  grid-template-columns: 48px 120px 1fr 48px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  align-items: center;
}

.compare-row {
  display: grid;
  grid-template-columns: 48px 120px 1fr 48px 1fr;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--divider);
  align-items: center;
  transition: all 0.6s var(--ease);
}
.compare-row:last-child { border-bottom: none; }
.compare-row:hover {
  background: rgba(255, 255, 255, 0.02);
  margin: 0 -24px;
  padding-left: 24px;
  padding-right: 24px;
}

.compare-num {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.5px;
}

.compare-dim {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.compare-old span,
.compare-new span {
  display: inline-block;
  padding: 4px 0;
}
.compare-old {
  font-size: 14px;
  color: var(--text-tertiary);
  position: relative;
}
.compare-new {
  font-size: 15px;
  font-weight: 500;
  color: #fff;
}

.compare-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

/* ========================================================
   四大核心能力
   ======================================================== */
.cap-section {
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(17, 21, 50, 0.3) 50%, rgba(10, 13, 31, 0) 100%);
}

.cap-head {
  margin-bottom: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cap-head-main {
  flex: 1;
  min-width: 0;
}

.cap-title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  letter-spacing: -1.2px;
  max-width: 640px;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(320px, auto);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.cap-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.6s var(--ease);
  overflow: hidden;
}
.cap-card:hover { background: var(--bg-card-hover); }
.cap-card.full { grid-column: span 3; }

.cap-card-inner {
  padding: 40px;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}

.cap-num {
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: -2px;
  opacity: 0.9;
}

.cap-body { flex: 1; display: flex; flex-direction: column; }
.cap-en {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  font-family: var(--font-display);
}
.cap-name {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.cap-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
  flex: 1;
}

.cap-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  padding-top: 16px;
  border-top: 1px solid var(--divider);
}
.cap-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}
.cap-feature-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.cap-card.full .cap-card-inner {
  flex-direction: row;
  align-items: center;
  gap: 48px;
}
.cap-card.full .cap-num { font-size: 96px; }
.cap-card.full .cap-body { flex: 1; }

/* ========================================================
   案例介绍
   ======================================================== */
.cases-section {
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(20, 13, 45, 0.3) 100%);
}

.cases-head { margin-bottom: 40px; }

.cases-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.cases-subtitle {
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 12px;
  letter-spacing: -0.3px;
}
.cases-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin: 0;
}

/* 行业分类Tab */
.cases-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin-bottom: 32px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.cases-tab {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  font-family: var(--font-body);
  white-space: nowrap;
}
.cases-tab:hover {
  border-color: var(--accent-border);
  color: #fff;
}
.cases-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* ============= 杂志网格布局 ============= */
.cases-mag-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.mag-row {
  display: grid;
  gap: 20px;
}
.mag-row-top {
  grid-template-columns: 2fr 1fr;
}
.mag-row-grid {
  grid-template-columns: repeat(3, 1fr);
}

.mag-card-stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 基础卡片 */
.mag-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  background: rgba(22, 27, 52, 0.8);
  transition: all 0.4s var(--ease);
  cursor: default;
  display: flex;
  flex-direction: column;
  min-height: 180px;
}
.mag-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-border);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--accent-border);
}

/* 实景图背景（实显） */
.mag-card-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 1;
  transition: transform 0.8s var(--ease);
  z-index: 0;
}
.mag-card-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.mag-card:hover .mag-card-bg {
  transform: scale(1.06);
}

/* 底部局部渐变压暗（只压文字区，保留图片上半部分清晰） */
.mag-card::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 65%;
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(10, 13, 31, 0.55) 45%, rgba(10, 13, 31, 0.85) 100%);
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.5s var(--ease);
}

/* 大卡片的渐变范围更大一些，因为文字更多 */
.mag-card-featured::after {
  height: 75%;
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(10, 13, 31, 0.4) 40%, rgba(10, 13, 31, 0.82) 100%);
}

.mag-card-inner {
  position: relative;
  z-index: 2;
  padding: 24px 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1;
}

/* 顶部：编号 + 标签 */
.mag-card-top {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}
.mag-card-num {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  line-height: 1;
}
.mag-card-tag {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.3px;
}

/* 底部：品牌名 + 描述 + 箭头 */
.mag-card-bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}
.mag-card-brand {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin: 0;
  letter-spacing: -0.3px;
  line-height: 1.2;
}
.mag-card-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
}
.mag-card-desc {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
  flex: 1;
}
.mag-card-arrow {
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s var(--ease);
  transform: translateX(0);
}
.mag-card:hover .mag-card-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* 大卡片（featured） */
.mag-card-featured {
  min-height: 420px;
}
.mag-card-featured .mag-card-inner {
  padding: 36px 40px;
}
.mag-card-featured .mag-card-num {
  font-size: 24px;
}
.mag-card-featured .mag-card-tag {
  font-size: 13px;
}
.mag-card-featured .mag-card-brand.lg {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
}
.mag-card-featured .mag-card-desc.lg {
  font-size: 15px;
  max-width: 520px;
}

/* 左侧featured轮播 */
.mag-featured-slider { position: relative; }
.mag-feat-slide {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}
.mag-feat-slide.active { opacity: 1; }
.mag-feat-slide .mag-card-bg {
  position: absolute;
  inset: 0;
}
.mag-featured-slider .mag-card-inner { position: relative; z-index: 2; }
.mag-featured-slider::after { z-index: 1; }

/* 轮播底部小圆点 */
.mag-feat-dots {
  position: absolute;
  bottom: 24px;
  left: 40px;
  z-index: 3;
  display: flex;
  gap: 12px;
}
.mag-feat-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  transition: all 0.3s var(--ease);
  cursor: pointer;
}
.mag-feat-dot.active {
  background: var(--accent);
  width: 30px;
  border-radius: 6px;
  box-shadow: 0 0 12px rgba(255, 87, 34, 0.7);
}

/* 右侧小卡片 */
.mag-card-small {
  flex: 1;
  min-height: 200px;
}
.mag-card-small .mag-card-inner {
  padding: 22px 24px;
}
.mag-card-small .mag-card-brand {
  font-size: 20px;
}
.mag-card-small .mag-card-desc {
  font-size: 12.5px;
}

/* 普通三列卡片 */
.mag-card-normal {
  min-height: 180px;
}
.mag-card-normal .mag-card-inner {
  padding: 22px 24px;
}
.mag-card-normal .mag-card-brand {
  font-size: 20px;
}

/* ========================================================
   价格体系
   ======================================================== */
.pricing-section {
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(25, 17, 55, 0.35) 50%, rgba(10, 13, 31, 0) 100%);
}

.pricing-head {
  text-align: center;
  margin-bottom: 44px;
}
.pricing-head .section-label { justify-content: center; }
.pricing-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -1px;
}
.pricing-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.4s var(--ease);
}
.price-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(255,87,34,0.05), var(--bg-card));
  transform: translateY(-8px);
}
.price-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}
.price-card.featured:hover { border-color: var(--accent); }

.price-badge {
  position: absolute;
  top: -1px;
  right: 24px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  letter-spacing: 0.5px;
}

.price-name {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.price-desc {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}
.price-value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.price-currency {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 500;
}
.price-num {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  font-family: var(--font-display);
}
.price-unit {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 400;
  margin-left: 2px;
}

.price-note {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 16px;
  padding: 6px 10px;
  background: var(--accent-dim);
  border-left: 2px solid var(--accent);
  line-height: 1.5;
}

.price-features {
  list-style: none;
  margin-bottom: 20px;
}
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.price-features li svg {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.price-suitable {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--divider);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.price-suitable-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 1px;
  text-transform: uppercase;
  font-family: var(--font-display);
  flex-shrink: 0;
}
.price-suitable-text {
  font-size: 13px;
  color: #fff;
  font-weight: 500;
}

.price-cta {
  width: 100%;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.price-cta:hover {
  border-color: #fff;
}
.price-cta.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.price-cta.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* ========================================================
   行业洞察
   ======================================================== */
.insights-section {
  background: linear-gradient(180deg, rgba(20, 13, 45, 0.25) 0%, rgba(10, 13, 31, 0) 100%);
}

.insights-head { margin-bottom: 48px; }
.insights-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.insights-desc { font-size: 15px; color: var(--text-secondary); max-width: 520px; }

.insights-layout {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.insight-card {
  display: block;
  background: var(--bg-card);
  padding: 32px;
  transition: all 0.3s var(--ease);
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}
.insight-card:visited,
.insight-card:hover,
.insight-card:active { color: inherit; text-decoration: none; }
.insight-card:hover {
  background: var(--bg-card-hover);
}
.insight-card.featured {
  padding: 48px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), transparent);
}

.insight-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 11px;
  font-family: var(--font-display);
  letter-spacing: 1px;
}
.insight-cat {
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
}
.insight-date, .insight-read {
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.insight-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.insight-card.featured .insight-title {
  font-size: 32px;
  max-width: 700px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.insight-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.insight-card.featured .insight-summary {
  font-size: 15px;
  max-width: 600px;
  -webkit-line-clamp: 3;
}

.insight-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  transition: gap 0.2s;
}
.insight-card:hover .insight-more { gap: 12px; }

/* 三列网格 */
.insights-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}
.insight-card.small {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.insight-card.small .insight-meta { margin-bottom: 0; }
.insight-title.small {
  font-size: 17px;
  line-height: 1.45;
  margin-bottom: 0;
}
.insight-summary.small {
  font-size: 12.5px;
  -webkit-line-clamp: 2;
  margin-bottom: 0;
}

/* 更多按钮 */
.insights-more-btn-wrap {
  margin-top: 40px;
  display: flex;
  justify-content: center;
}
.insights-status {
  padding: 36px 32px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg-card);
  text-align: center;
}
.insights-status-error {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.insights-status-error button {
  padding: 8px 14px;
  border: 1px solid var(--accent);
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: transparent;
  border: 1px solid var(--border);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s var(--ease);
  letter-spacing: 0.5px;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  gap: 16px;
  background: rgba(255, 87, 34, 0.04);
}

/* ========================================================
   时间轴
   ======================================================== */
.timeline-section {
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(17, 12, 40, 0.3) 100%);
}

.timeline-head { margin-bottom: 48px; }

.timeline-title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  letter-spacing: -1.2px;
  margin-bottom: 16px;
  max-width: 600px;
}
.timeline-intro { max-width: 620px; }
.timeline-intro p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
}
.timeline-intro p + p { margin-top: 12px; }
.timeline-intro .ti-lead + p { margin-top: 16px; }
.timeline-intro .ti-lead {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.2px;
  color: rgba(255, 255, 255, 0.92);
}

.timeline-list {
  position: relative;
  padding-left: 0;
}

.tl-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 48px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
  transition: all 0.6s var(--ease);
  position: relative;
}
.tl-item:last-child { border-bottom: 1px solid var(--border); }
.tl-item:hover { background: rgba(255,255,255,0.02); margin: 0 -24px; padding-left: 24px; padding-right: 24px; }

.tl-year {
  font-size: 40px;
  font-weight: 800;
  color: var(--text-tertiary);
  font-family: var(--font-display);
  letter-spacing: -1px;
  transition: color 0.3s;
  line-height: 1;
  padding-top: 4px;
}
.tl-item:hover .tl-year { color: var(--accent); }
.tl-item.highlight .tl-year { color: var(--accent); }

.tl-line { display: none; }

.tl-content { flex: 1; }
.tl-title {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.4px;
}
.tl-item.highlight .tl-title { color: var(--accent); }
.tl-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 640px;
}

/* ========================================================
   服务版图
   ======================================================== */
.service-section {
  background: linear-gradient(180deg, rgba(10, 13, 31, 0) 0%, rgba(17, 11, 38, 0.5) 100%);
}

.service-head { margin-bottom: 48px; }
.service-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.service-sub { font-size: 15px; color: var(--text-secondary); max-width: 560px; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.svc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 32px;
  transition: all 0.3s var(--ease);
  position: relative;
}
.svc-card:hover { background: var(--bg-card-hover); }

.svc-index {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.svc-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.svc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.svc-tag {
  padding: 4px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.svc-card:hover .svc-tag {
  background: rgba(255,87,34,0.1);
  border-color: var(--accent-border);
  color: var(--accent);
}

.svc-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-tertiary);
}

/* ========================================================
   企业愿景（全屏大视觉）
   ======================================================== */
.vision-section {
  position: relative;
  height: 90vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0;
}

.vision-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(255,87,34,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 50%, rgba(0,229,255,0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(76, 29, 149, 0.3) 0%, transparent 60%),
    transparent;
}
.vision-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}
.vision-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg-deep) 0%, transparent 20%, transparent 80%, var(--bg-deep) 100%);
}

.vision-inner {
  position: relative;
  z-index: 2;
  max-width: 1180px;
  padding: 0 48px;
  text-align: center;
  width: 100%;
}

.vision-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  font-family: var(--font-display);
}
.vision-eyebrow .label-num { color: var(--accent); }
.vision-eyebrow .label-text { color: var(--text-tertiary); }

.vision-title {
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -2px;
  margin-bottom: 32px;
}

.vision-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 760px;
  margin: 0 auto 48px;
}

.vision-pillars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
}
.vp-item { text-align: center; }
.vp-num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.vp-text {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}
.vp-line {
  width: 64px;
  height: 1px;
  background: var(--border-strong);
}

/* ========================================================
   联系我们 + Footer
   ======================================================== */
/* ========================================================
   12 · FAQ 常见问题
   三组问答与 <head> 内 FAQPage 结构化数据逐字对应，改动需两边同步
   ======================================================== */
.faq-section {
  /* 底部留给 .contact-footer 的 padding-top，避免两段留白叠加成 176px */
  padding-bottom: 0;
}
.faq-head {
  max-width: 720px;
  margin-bottom: 48px;
}
.faq-title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
  color: #fff;
  margin-bottom: 20px;
}
.faq-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 560px;
}
.faq-list {
  border-top: 1px solid var(--border);
}
.faq-item {
  display: flex;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}
.faq-num {
  flex: 0 0 28px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  line-height: 2;
}
.faq-body {
  flex: 1;
  min-width: 0;
}
.faq-q {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.2px;
  color: #fff;
  margin-bottom: 12px;
}
.faq-a {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 820px;
}

.contact-footer {
  background: linear-gradient(180deg, rgba(17, 11, 38, 0.4) 0%, rgba(10, 10, 25, 0.8) 100%);
  padding-top: 88px;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  padding-bottom: 80px;
}

.contact-left .section-label { margin-bottom: 24px; }
.contact-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.contact-sub {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.contact-info {
  border-top: 1px solid var(--border);
}
.ci-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.ci-label {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  font-family: var(--font-display);
  padding-top: 2px;
}
.ci-value {
  font-size: 15px;
  color: #fff;
  line-height: 1.6;
}
.ci-value.phone {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: -0.5px;
}

/* 表单 */
.contact-right { display: flex; align-items: flex-end; position: relative; }
.contact-mascot {
  position: absolute;
  right: -40px;
  bottom: -20px;
  width: 200px;
  pointer-events: none;
  z-index: 2;
  animation: mascotFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.3));
}
.contact-mascot img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}
@keyframes mascotFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.contact-form {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px;
  position: relative;
}
.form-title {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 28px;
  letter-spacing: -0.3px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  padding: 10px 12px;
  color: #fff;
  font-size: 14px;
  font-family: var(--font-body);
  outline: none;
  transition: all 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 87, 34, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-quaternary);
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}
.form-group textarea { resize: vertical; min-height: 100px; }

.form-submit {
  width: 100%;
  height: 48px;
  background: var(--accent);
  border: none;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 8px;
  transition: all 0.3s var(--ease);
}
.form-submit:hover {
  background: var(--accent-hover);
  gap: 14px;
}
.form-submit:disabled {
  opacity: 0.65;
  cursor: wait;
}
.form-status {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
}
.form-status.success { color: #66d9a0; }
.form-status.error { color: #ff9b82; }

/* Footer */
.footer {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border);
  background: var(--bg-deep);
}

.footer-mountain-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 320px;
  z-index: 0;
  pointer-events: none;
}
/* picture 是 webp/png 的载体，必须撑满父层，否则 img 的 height:100% 会塌成 0 */
.footer-mountain-bg picture {
  display: block;
  width: 100%;
  height: 100%;
}
.footer-mountain-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  opacity: 0.55;
  filter: saturate(0.9);
}
.footer-mountain-overlay {
  display: none;
}

.footer .container-narrow {
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  padding: 64px 0 48px;
}
.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.footer-logo-link {
  display: block;
  flex-shrink: 0;
  text-decoration: none;
}
.footer-brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 12px;
  display: block;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.brand-mark.lg {
  width: 48px;
  height: 48px;
  font-size: 24px;
  flex-shrink: 0;
}
.footer-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.footer-slogan {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.f-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.f-col a {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 10px;
  transition: color 0.2s;
}
.f-col a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-tertiary);
}
.footer-legal {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}
.footer-legal:hover { color: var(--accent); text-decoration: underline; }

/* ========================================================
   响应式
   ======================================================== */
@media (max-width: 1024px) {
  .topnav-inner { padding: 0 24px; }
  .topnav-divider { left: 24px; right: 24px; }
  .topnav-mid { display: none; }
  .topnav-mid.open {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background: rgba(10, 13, 31, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 0;
    height: auto;
    z-index: 99;
  }
  .topnav-link {
    width: 100%;
    text-align: left;
    padding: 16px 0;
    font-size: 18px;
    border-bottom: 1px solid var(--divider);
    height: auto;
  }
  .topnav-link::after { display: none; }
  .hamburger { display: flex; }

  .vert-pager { display: none; }

  .container-narrow { padding: 0 24px; }

  .hero-content-wrap { padding: 72px 24px 0; }
  .hero-pager { right: 24px; bottom: 100px; }
  .scroll-hint { left: 24px; bottom: 24px; }

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

  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .cap-card.full { grid-column: span 2; }

  .mag-row-top { grid-template-columns: 1fr; }
  .mag-row-grid { grid-template-columns: repeat(3, 1fr); }
  .mag-card-featured { min-height: 320px; }
  .mag-card-featured .mag-card-brand.lg { font-size: 32px; }
  .mag-card-brand { font-size: 18px; }

  .pricing-grid { grid-template-columns: 1fr; gap: 16px; }
  .price-card.featured { transform: none; }

  .insights-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .insight-card.featured .insight-title { font-size: 26px; }

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

  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { grid-template-columns: repeat(3, 1fr); }

  .contact-wrap { grid-template-columns: 1fr; gap: 48px; }

  .geo-head-inner { gap: 32px; }

  .contact-mascot { width: 160px; right: -20px; bottom: -10px; }
}

@media (max-width: 640px) {
  .topnav-inner { padding: 0 16px; }
  .topnav-divider { left: 16px; right: 16px; }
  .nav-logo-static { width: 34px; height: 34px; border-radius: 7px; }
  .brand-main { font-size: 14px; }
  .brand-sub { display: none; }
  .topnav-icon-btn { display: none; }

  .cap-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .container-narrow { padding: 0 20px; }

  .section { padding: 56px 0; }

  .hero-content-wrap { padding: 64px 20px 0; }
  .hero-eyebrow { font-size: 10px; letter-spacing: 2px; margin-bottom: 16px; }
  .hero-title { letter-spacing: -1px; margin-bottom: 20px; }
  .hero-sub { font-size: 15px; margin-bottom: 24px; }
  .big-stat { font-size: 80px; }
  .hero-stat-block { flex-direction: column; align-items: flex-start; gap: 8px; }
  .big-stat-label { padding-bottom: 0; }
  .hero-keywords { flex-direction: column; gap: 4px; }
  .hero-pager { display: none; }
  .scroll-hint { display: none; }

  .logos-section { padding: 48px 0; }
  .logos-block { margin-bottom: 40px; }
  .logos-title { font-size: 26px; margin-bottom: 24px; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .logo-item { padding: 16px; }

  .geo-title { font-size: 32px; }
  .geo-compare { overflow-x: auto; }
  .compare-header-row, .compare-row {
    min-width: 560px;
    grid-template-columns: 36px 100px 1fr 36px 1fr;
    gap: 10px;
  }

  .cap-grid { grid-template-columns: 1fr; }
  .cap-card.full { grid-column: span 1; }
  .cap-card.full .cap-card-inner {
    flex-direction: column;
    gap: 16px;
  }
  .cap-card.full .cap-num { font-size: 64px; }
  .cap-features { grid-template-columns: 1fr; }
  .cap-num { font-size: 48px; }

  .cases-title { font-size: 30px; }
  .cases-subtitle { font-size: 18px; }
  .cases-tabs { gap: 6px; }
  .cases-tab { padding: 8px 14px; font-size: 12px; }
  .mag-row-top { grid-template-columns: 1fr; }
  .mag-row-grid { grid-template-columns: 1fr; }
  .mag-card-stack { gap: 16px; }
  .mag-card-featured { min-height: 280px; }
  .mag-card-featured .mag-card-inner { padding: 24px 26px; }
  .mag-card-featured .mag-card-brand.lg { font-size: 28px; }
  .mag-card { min-height: 160px; }
  .mag-card-inner { padding: 20px 22px; }
  .mag-card-brand { font-size: 18px; }
  .mag-card-desc { font-size: 12.5px; }
  .cases-mag-grid { gap: 16px; }
  .mag-row { gap: 16px; }

  .pricing-title { font-size: 28px; }

  .insights-title { font-size: 28px; }
  .insight-card { padding: 24px; }
  .insight-card.featured { padding: 32px; }
  .insight-card.featured .insight-title { font-size: 22px; }
  .insights-grid-3 { grid-template-columns: 1fr; }
  .insight-title.small { font-size: 16px; }
  .insight-summary.small { font-size: 12px; }

  .timeline-title { font-size: 30px; }
  .tl-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 24px 0;
  }
  .tl-year { font-size: 28px; padding-top: 0; }

  .service-title { font-size: 28px; }

  .vision-section { height: auto; min-height: 500px; padding: 64px 0; }
  .vision-inner { padding: 0 20px; }
  .vision-title { font-size: 36px; }
  .vision-desc { font-size: 15px; }
  .vision-pillars {
    flex-direction: column;
    gap: 20px;
  }
  .vp-line { width: 1px; height: 24px; }

  .faq-head { margin-bottom: 32px; }
  .faq-title { font-size: 28px; letter-spacing: -0.5px; }
  .faq-desc { font-size: 14px; }
  .faq-item { gap: 14px; padding: 28px 0; }
  .faq-num { flex: 0 0 22px; font-size: 12px; line-height: 2.15; }
  .faq-q { font-size: 17px; }
  .faq-a { font-size: 14px; line-height: 1.85; }

  .contact-footer { padding-top: 64px; }
  .contact-wrap { gap: 40px; padding-bottom: 56px; }
  .contact-title { font-size: 30px; }
  .ci-item { grid-template-columns: 60px 1fr; }
  .ci-value.phone { font-size: 20px; }
  .contact-form { padding: 28px 24px; }
  .form-row { grid-template-columns: 1fr; }

  .footer-mountain-bg { height: 200px; }
  .footer-top { padding: 40px 0 28px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-bottom {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }

  .geo-head-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .mascot-top { width: 64px; right: 16px; bottom: 16px; }
  .mascot-top-tip { display: none; }

  .contact-mascot { width: 100px; right: 0; bottom: -5px; opacity: 0.9; }

  .footer-brand-logo { width: 40px; height: 40px; border-radius: 10px; }

}