/* =========================================================
   算力平方 SL² - 自定义样式
   ========================================================= */

/* ---------- 基础 ---------- */
html {
  scroll-behavior: smooth;
}

body {
  background-color: #0B1120;
  background-image: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(37, 99, 235, 0.18), transparent);
}

::selection {
  background: rgba(37, 99, 235, 0.5);
  color: #fff;
}

/* 细滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #0B1120; }
::-webkit-scrollbar-thumb { background: #1E293B; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #334155; }

/* ---------- 渐变文字 ---------- */
.gradient-text {
  background-image: linear-gradient(to right, #60A5FA, #22D3EE);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 导航栏 ---------- */
#navbar {
  background-color: transparent;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background-color: rgba(11, 17, 32, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* Logo 图片（img/logo.png，蓝云电路标） */
.logo-img {
  height: 3.9rem;
  width: auto;
  filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.35));
  transition: transform 0.25s ease;
}
.logo-img:hover { transform: scale(1.05); }

.logo-mark {
  display: inline-flex;
  align-items: baseline;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  background-image: linear-gradient(to right, #2563EB, #06B6D4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo-mark sup { font-size: 0.65em; }

/* 导航徽标（NEW / HOT） */
.badge-new,
.badge-hot {
  display: inline-block;
  margin-left: 0.3rem;
  padding: 0.05rem 0.4rem;
  border-radius: 9999px;
  font-size: 0.625rem;
  font-weight: 800;
  line-height: 1.4;
  vertical-align: 2px;
}
.badge-new {
  color: #67E8F9;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.4);
}
.badge-hot {
  color: #FCA5A5;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.85rem;
  border-radius: 0.5rem;
  font-size: 0.925rem;
  color: #94A3B8;
  transition: color 0.2s ease, background-color 0.2s ease;
  white-space: nowrap;
}
.nav-link:hover { color: #F1F5F9; background-color: rgba(255, 255, 255, 0.05); }
.nav-link.active { color: #fff; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.15rem;
  height: 2px;
  border-radius: 2px;
  background-image: linear-gradient(to right, #2563EB, #06B6D4);
}

/* 桌面端下拉菜单（合作服务） */
.nav-dropdown { position: relative; }
.dropdown-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 7.5rem;
  padding: 0.4rem;
  border-radius: 0.75rem;
  background: rgba(15, 26, 48, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 60;
}
.nav-dropdown:hover .dropdown-panel,
.nav-dropdown.open .dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown-panel a {
  display: block;
  padding: 0.45rem 0.6rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  color: #94A3B8;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.dropdown-panel a:hover {
  color: #fff;
  background: rgba(6, 182, 212, 0.1);
}
.dropdown-caret {
  display: inline-block;
  margin-left: 0.25rem;
  font-size: 0.6em;
  transition: transform 0.2s ease;
}
.nav-dropdown.open .dropdown-caret { transform: rotate(180deg); }

/* 移动端菜单 */
#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
#mobile-menu.open { max-height: 42rem; }

#menu-btn .icon-close { display: none; }
#menu-btn.open .icon-open { display: none; }
#menu-btn.open .icon-close { display: block; }

/* ---------- 玻璃拟态卡片 ---------- */
.glass-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 1rem;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.glass-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 12px 40px rgba(6, 182, 212, 0.12);
}

/* ---------- 发光按钮 ---------- */
.btn-gradient {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  color: #fff;
  background-image: linear-gradient(to right, #2563EB, #06B6D4);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.45);
  transition: box-shadow 0.25s ease, transform 0.25s ease, opacity 0.25s ease;
}
.btn-gradient:hover {
  box-shadow: 0 6px 32px rgba(6, 182, 212, 0.55);
  transform: translateY(-2px);
}
.btn-gradient:active { transform: translateY(0); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  color: #E2E8F0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: border-color 0.25s ease, background-color 0.25s ease, transform 0.25s ease;
}
.btn-ghost:hover {
  border-color: rgba(6, 182, 212, 0.6);
  background-color: rgba(6, 182, 212, 0.08);
  transform: translateY(-2px);
}

/* 推荐套餐高亮渐变边框 */
.gradient-border {
  position: relative;
  border: 1px solid transparent;
  background:
    linear-gradient(#0F1A30, #0F1A30) padding-box,
    linear-gradient(135deg, #2563EB, #06B6D4) border-box;
  box-shadow: 0 0 48px rgba(37, 99, 235, 0.25);
}

/* ---------- 网格背景 ---------- */
.grid-bg {
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
}

/* ---------- 厂商跑马灯 ---------- */
.marquee {
  overflow: hidden;
  position: relative;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  width: max-content;
  animation: marquee-scroll 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: #64748B;
  white-space: nowrap;
  transition: color 0.2s ease;
}
.marquee-item:hover { color: #CBD5E1; }
.marquee-item::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 9999px;
  background-image: linear-gradient(135deg, #2563EB, #06B6D4);
  opacity: 0.7;
}

/* ---------- 滚动淡入动画（data-reveal） ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 终端 / 代码块 ---------- */
.terminal {
  background: #0A0F1C;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.85rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 60px rgba(37, 99, 235, 0.12);
  overflow: hidden;
}
.terminal-dot { width: 0.65rem; height: 0.65rem; border-radius: 9999px; }

.code-block {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
}
.typing-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: #22D3EE;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ---------- 发光脉冲点 ---------- */
.pulse-dot {
  position: relative;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 9999px;
  background: #22C55E;
}
.pulse-dot::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 9999px;
  background: rgba(34, 197, 94, 0.35);
  animation: pulse-ring 1.8s ease-out infinite;
}
@keyframes pulse-ring {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}
.pulse-dot.dot-amber { background: #EAB308; }
.pulse-dot.dot-amber::before { background: rgba(234, 179, 8, 0.35); }

/* ---------- FAQ 手风琴 ---------- */
.faq-item .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.25rem;
}
.faq-item.open .faq-answer {
  padding: 0 1.25rem 1.25rem;
}
.faq-item .faq-icon { transition: transform 0.3s ease; }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* ---------- 模型广场 分类 Tab ---------- */
.model-tab {
  padding: 0.45rem 1.1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  color: #94A3B8;
  border: 1px solid rgba(255, 255, 255, 0.12);
  white-space: nowrap;
  transition: all 0.2s ease;
  cursor: pointer;
}
.model-tab:hover { color: #E2E8F0; border-color: rgba(6, 182, 212, 0.5); }
.model-tab.active {
  color: #fff;
  border-color: transparent;
  background-image: linear-gradient(to right, #2563EB, #06B6D4);
}

/* 模型编号（goe.cc 风格编号卡） */
.model-no {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #475569;
}

/* ---------- 文档页代码 Tab ---------- */
.code-tab {
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  border-radius: 0.5rem 0.5rem 0 0;
  color: #94A3B8;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.code-tab:hover { color: #E2E8F0; }
.code-tab.active {
  color: #22D3EE;
  border-bottom-color: #22D3EE;
}
.code-pane { display: none; }
.code-pane.active { display: block; }

/* ---------- 时间线 ---------- */
.timeline-item { position: relative; padding-left: 2rem; padding-bottom: 2rem; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 1.4rem;
  bottom: 0;
  width: 2px;
  background: rgba(148, 163, 184, 0.2);
}
.timeline-item:last-child::before { display: none; }
.timeline-dot {
  position: absolute;
  left: 0;
  top: 0.3rem;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 9999px;
  background-image: linear-gradient(135deg, #2563EB, #06B6D4);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.6);
}

/* ---------- 在线客服浮窗 ---------- */
#service-float {
  position: fixed;
  right: 1.25rem;
  bottom: 8.75rem;
  z-index: 60;
}
.service-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  background-image: linear-gradient(to right, #2563EB, #06B6D4);
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.5);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
  border: none;
}
.service-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(6, 182, 212, 0.55); }
.service-panel {
  position: absolute;
  bottom: 3.2rem;
  right: 0;
  width: 15rem;
  padding: 1.1rem;
  border-radius: 1rem;
  background: rgba(15, 26, 48, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
#service-float.open .service-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.qr-placeholder {
  width: 7.5rem;
  height: 7.5rem;
  margin: 0 auto;
  border-radius: 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background-image:
    repeating-linear-gradient(0deg, rgba(148, 163, 184, 0.25) 0 6px, transparent 6px 12px),
    repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.25) 0 6px, transparent 6px 12px),
    linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(6, 182, 212, 0.12));
}

/* ---------- 返回顶部按钮 ---------- */
#back-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 60;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background-image: linear-gradient(to right, #2563EB, #06B6D4);
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s ease;
}
#back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
#back-top:hover { transform: translateY(-3px); }

/* Hero slogan 打完抖动动画 */
@keyframes slogan-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  40% { transform: translateX(7px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}
#hero-slogan.shake { animation: slogan-shake 0.5s ease; }

/* OEM 方案二维码弹层 */
.oem-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.oem-modal.open { opacity: 1; visibility: visible; }
.oem-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(4, 8, 18, 0.72);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.oem-modal-panel {
  position: relative;
  width: 250px;
  padding: 1.9rem 1.5rem 1.5rem;
  border-radius: 1rem;
  background: #0d1526;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  text-align: center;
  transform: translateY(12px);
  transition: transform 0.25s ease;
}
.oem-modal.open .oem-modal-panel { transform: translateY(0); }
.oem-modal-qr {
  width: 100%;
  border-radius: 0.6rem;
  margin-top: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.oem-modal-close {
  position: absolute;
  top: 0.6rem;
  right: 0.7rem;
  color: #94a3b8;
  font-size: 1rem;
  line-height: 1;
  transition: color 0.2s;
}
.oem-modal-close:hover { color: #fff; }

/* 客服面板关闭按钮 */
.service-close {
  position: absolute;
  top: 0.55rem;
  right: 0.65rem;
  width: 1.4rem;
  height: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #94a3b8;
  font-size: 0.75rem;
  line-height: 1;
  transition: color 0.2s, background 0.2s;
}
.service-close:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }

/* ============ 页脚品牌名「肆意创」突显 ============ */
footer a[href="https://41c.cn/"] {
  font-size: 1.25em;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: linear-gradient(90deg, #60a5fa, #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: filter 0.2s;
}
footer a[href="https://41c.cn/"]:hover { filter: brightness(1.3); }

/* ============ 方案 B：粒子神经网络 · 极光氛围（全站视觉层，不改布局） ============ */
body::before{
  content:''; position:absolute; top:0; left:0; width:100%; height:100vh; z-index:-9; pointer-events:none;
  background:
    radial-gradient(620px 420px at 18% 28%, rgba(124,58,237,.30), transparent 62%),
    radial-gradient(720px 520px at 82% 18%, rgba(6,182,212,.20), transparent 62%),
    radial-gradient(500px 360px at 50% 85%, rgba(37,99,235,.18), transparent 65%);
}
.btn-gradient{ box-shadow:0 0 22px rgba(37,99,235,.50), 0 0 56px rgba(6,182,212,.22); }
.btn-gradient:hover{ box-shadow:0 0 34px rgba(37,99,235,.75), 0 0 80px rgba(6,182,212,.38); }
.gradient-text{ background-image:linear-gradient(92deg,#60A5FA 0%,#22D3EE 45%,#A78BFA 100%); }
.pulse-dot{ box-shadow:0 0 10px rgba(6,182,212,.9); }
header#navbar{ border-bottom:1px solid transparent; border-image:linear-gradient(90deg,transparent,rgba(59,130,246,.45),rgba(6,182,212,.45),transparent) 1; }