/* ══════════════════════════════════════
   YY科技 企业站 — 暗色科技风 v5
   Design: 深空底色 + 赛博霓虹 + 玻璃拟态
   ══════════════════════════════════════ */

:root {
  --bg:       #020817;
  --bg-1:     #0a0f1e;
  --bg-2:     #0f172a;
  --bg-3:     #1e293b;
  --glass:    rgba(15, 23, 42, 0.6);
  --glass-2:  rgba(255, 255, 255, 0.04);
  --cyan:     #22d3ee;
  --purple:   #a855f7;
  --green:    #10b981;
  --amber:    #f59e0b;
  --blue:     #3b82f6;
  --text:     #f1f5f9;
  --text-2:   rgba(241, 245, 249, 0.52);
  --border:   rgba(255, 255, 255, 0.07);
  --glow-c:   0 0 30px rgba(34, 211, 238, 0.22);
  --glow-p:   0 0 30px rgba(168, 85, 247, 0.22);
  --glow-g:   0 0 30px rgba(16, 185, 129, 0.22);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text); line-height: 1.7;
  background: var(--bg);
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ══════════════════════════════════════
   悬浮联系按钮
   ══════════════════════════════════════ */
.float-btns {
  position: fixed; right: 20px; top: 50%; transform: translateY(-50%);
  z-index: 9999; display: flex; flex-direction: column; gap: 12px;
}
.float-btns li a {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, #0088cc, var(--cyan));
  border: 1px solid rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.3), 0 4px 20px rgba(0,0,0,0.5);
  transition: transform .3s, box-shadow .3s;
}
.float-btns li a:hover {
  transform: scale(1.12);
  box-shadow: 0 0 38px rgba(34, 211, 238, 0.55), 0 6px 24px rgba(0,0,0,0.4);
}
.float-btns svg { width: 24px; height: 24px; }

/* ══════════════════════════════════════
   顶部导航 (glassmorphism)
   ══════════════════════════════════════ */
.top-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 14px 40px; display: flex; align-items: center;
  background: rgba(2, 8, 23, 0.78);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 15px; color: #020817;
  box-shadow: 0 0 22px rgba(34, 211, 238, 0.45);
  border: 1px solid rgba(34, 211, 238, 0.35);
}
.logo-label {
  font-size: 18px; font-weight: 700; color: var(--text);
  letter-spacing: 0.02em;
}

/* 工具导航按钮 (纯CSS hover，修复原JS语法错误) */
.nav-tools-btn {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  color: var(--cyan); font-size: 0.85rem;
  border: 1px solid rgba(34, 211, 238, 0.4);
  padding: 6px 18px; border-radius: 20px;
  background: rgba(34, 211, 238, 0.07);
  transition: all .3s;
}
.nav-tools-btn:hover {
  background: rgba(34, 211, 238, 0.18);
  border-color: var(--cyan);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.3);
  color: #fff;
}

/* ══════════════════════════════════════
   右侧页面导航
   ══════════════════════════════════════ */
.page-nav {
  position: fixed; right: 80px; top: 50%; transform: translateY(-50%);
  z-index: 1000; display: flex; flex-direction: column; gap: 18px;
}
.page-dot {
  display: flex; align-items: center; gap: 10px;
  cursor: pointer; flex-direction: row-reverse;
}
.page-dot::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.22);
  transition: .3s; flex-shrink: 0;
}
.page-dot.active::before {
  width: 10px; height: 10px;
  background: var(--cyan); border-color: var(--cyan);
  box-shadow: 0 0 8px var(--cyan), 0 0 22px rgba(34, 211, 238, 0.45);
}
.page-dot span {
  font-size: 11px; color: rgba(255,255,255,0.38);
  white-space: nowrap; transition: .3s;
  opacity: 0; transform: translateX(8px);
  letter-spacing: 0.06em;
}
.page-dot:hover span, .page-dot.active span {
  opacity: 1; transform: translateX(0); color: var(--cyan);
}

/* ══════════════════════════════════════
   Section 通用布局
   ══════════════════════════════════════ */
.fp-content {
  display: flex; align-items: center; justify-content: center;
  width: 100%; max-width: 1200px; margin: 0 auto;
  padding: 0 60px; height: 100%; gap: 60px;
}
.fp-content.reverse { flex-direction: row-reverse; }
.col-text { flex: 1; min-width: 0; }
.col-visual {
  flex: 1; min-width: 0;
  display: flex; align-items: center; justify-content: center;
}

/* ══════════════════════════════════════
   标题排版
   ══════════════════════════════════════ */
h1 {
  font-size: 52px; font-weight: 900; line-height: 1.2; margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 0%, var(--cyan) 55%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
h2 {
  font-size: 38px; font-weight: 800; line-height: 1.3;
  margin-bottom: 20px; color: var(--text);
  padding-top: 18px; position: relative;
}
h2::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 38px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent, var(--cyan)), transparent);
}
.sec-desc, .hero-desc {
  font-size: 15px; color: var(--text-2);
  margin-bottom: 28px; line-height: 1.95;
}

/* ══════════════════════════════════════
   按钮
   ══════════════════════════════════════ */
.btn-contact {
  display: inline-block; padding: 13px 36px; border-radius: 8px;
  font-size: 15px; font-weight: 700; color: #020817;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border: none; transition: .3s; cursor: pointer;
  box-shadow: 0 0 22px rgba(34, 211, 238, 0.28), 0 4px 24px rgba(0,0,0,0.35);
  letter-spacing: 0.03em;
}
.btn-contact:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.45), 0 8px 32px rgba(0,0,0,0.3);
  filter: brightness(1.06);
}
.btn-alt {
  background: rgba(34, 211, 238, 0.08);
  color: var(--cyan); border: 1px solid rgba(34, 211, 238, 0.32);
  box-shadow: none;
}
.btn-alt:hover {
  background: rgba(34, 211, 238, 0.16);
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.2);
  color: #fff; filter: none;
}

/* ══════════════════════════════════════
   入场动画
   ══════════════════════════════════════ */
.fade-up {
  opacity: 0; transform: translateY(32px);
  transition: opacity .65s ease-out, transform .65s ease-out;
}
.fade-left {
  opacity: 0; transform: translateX(-50px);
  transition: opacity .65s ease-out, transform .65s ease-out;
}
.fade-right {
  opacity: 0; transform: translateX(50px);
  transition: opacity .65s ease-out, transform .65s ease-out;
}
.active .fade-up,
.active .fade-left,
.active .fade-right { opacity: 1; transform: translate(0, 0); }
.active .fade-up:nth-child(2) { transition-delay: .13s; }
.active .fade-up:nth-child(3) { transition-delay: .26s; }
.active .fade-up:nth-child(4) { transition-delay: .39s; }

/* ══════════════════════════════════════
   Info 卡片 (通用)
   ══════════════════════════════════════ */
.info-blocks { display: flex; gap: 16px; align-items: stretch; }
.info-block {
  flex: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px;
  transition: .3s;
}
.info-block:hover {
  background: rgba(34,211,238,0.04);
  border-color: rgba(34,211,238,0.22);
  box-shadow: var(--glow-c);
  transform: translateY(-2px);
}
.info-block h4 {
  font-size: 14px; font-weight: 700; margin-bottom: 10px;
  padding-bottom: 10px; border-bottom: 1px solid var(--border);
  color: var(--cyan); letter-spacing: 0.02em;
}
.info-block p { font-size: 13px; color: var(--text-2); line-height: 1.85; }
.info-divider { display: none; }

/* ══════════════════════════════════════
   S1 首页 — 深空 + 青色极光
   ══════════════════════════════════════ */
.s-hero {
  --accent: var(--cyan);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 600px at 75% 55%, rgba(34,211,238,0.1) 0%, transparent 70%),
    radial-gradient(ellipse 600px 500px at 15% 65%, rgba(168,85,247,0.07) 0%, transparent 60%),
    radial-gradient(rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px;
}

.hero-devices { position: relative; width: 420px; height: 360px; }
.device-phone {
  position: absolute; left: 0; top: 20px; width: 158px; z-index: 2;
  background: var(--bg-2); border-radius: 22px; padding: 8px;
  border: 1px solid rgba(34,211,238,0.22);
  box-shadow: 0 20px 60px rgba(0,0,0,0.55), 0 0 40px rgba(34,211,238,0.09);
}
.device-screen { background: var(--bg); border-radius: 16px; overflow: hidden; }
.screen-top {
  height: 32px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
}
.screen-banner {
  height: 44px; margin: 8px; border-radius: 8px;
  background: linear-gradient(135deg, rgba(168,85,247,0.3), rgba(34,211,238,0.18));
  border: 1px solid rgba(34,211,238,0.1);
}
.screen-icons {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 5px; padding: 5px 8px 10px;
}
.screen-icons div {
  aspect-ratio: 1; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; color: var(--text-2); font-weight: 600;
}

.device-laptop {
  position: absolute; right: 0; top: 30px; width: 272px;
  background: var(--bg-2); border-radius: 12px; overflow: hidden;
  border: 1px solid rgba(34,211,238,0.16);
  box-shadow: 0 20px 60px rgba(0,0,0,0.55), 0 0 40px rgba(34,211,238,0.06);
}
.laptop-bar {
  display: flex; gap: 5px; padding: 8px 12px;
  background: var(--bg-1); border-bottom: 1px solid var(--border);
}
.laptop-bar i { width: 8px; height: 8px; border-radius: 50%; background: var(--bg-3); }
.laptop-bar i:first-child  { background: #ef4444; }
.laptop-bar i:nth-child(2) { background: #f59e0b; }
.laptop-bar i:nth-child(3) { background: #22c55e; }
.laptop-screen { padding: 10px; background: var(--bg); }
.lp-header {
  height: 14px; background: var(--glass-2);
  border-radius: 3px; margin-bottom: 8px;
}
.lp-hero {
  height: 54px; border-radius: 8px; margin-bottom: 8px;
  background: linear-gradient(135deg, rgba(168,85,247,0.25), rgba(34,211,238,0.15));
  border: 1px solid rgba(34,211,238,0.1);
}
.lp-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; }
.lp-grid span {
  aspect-ratio: 1; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: 4px;
}

/* ══════════════════════════════════════
   S2 合作对接 — 深紫空间
   ══════════════════════════════════════ */
.s-cooperate {
  --accent: var(--purple);
  background-color: #06030f;
  background-image:
    radial-gradient(ellipse 800px 600px at 25% 50%, rgba(168,85,247,0.12) 0%, transparent 70%),
    radial-gradient(rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px;
}

.coop-card-stack { position: relative; width: 300px; height: 300px; }
.coop-c {
  position: absolute; border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
.coop-c.c1 {
  width: 240px; height: 160px; top: 20px; left: 10px;
  background: rgba(168,85,247,0.07);
  border: 1px solid rgba(168,85,247,0.14);
  transform: rotate(-6deg);
}
.coop-c.c2 {
  width: 240px; height: 160px; top: 40px; left: 30px;
  background: rgba(168,85,247,0.11);
  border: 1px solid rgba(168,85,247,0.2);
  transform: rotate(2deg);
}
.coop-c.c3 {
  width: 240px; height: 160px; top: 60px; left: 50px;
  background: rgba(168,85,247,0.18);
  border: 1px solid rgba(168,85,247,0.38);
  transform: rotate(-1deg);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 40px rgba(168,85,247,0.2);
}
.coop-c.c3 svg { width: 60px; height: 60px; stroke: rgba(168,85,247,0.85); }

.coop-list { max-height: 58vh; overflow-y: auto; }
.coop-item {
  padding: 11px 16px; margin-bottom: 8px;
  background: rgba(168,85,247,0.06);
  border: 1px solid rgba(168,85,247,0.12);
  border-left: 3px solid rgba(168,85,247,0.55);
  border-radius: 0 8px 8px 0;
  transition: .25s;
}
.coop-item:hover {
  background: rgba(168,85,247,0.1);
  border-left-color: var(--purple);
}
.coop-item:last-child { margin-bottom: 0; }
.coop-item b { font-size: 14px; display: block; margin-bottom: 3px; }
.coop-item p { font-size: 12px; color: var(--text-2); margin: 0; }

/* ══════════════════════════════════════
   S3 产品介绍 — 深蓝
   ══════════════════════════════════════ */
.s-product {
  --accent: var(--blue);
  background-color: #020c1a;
  background-image:
    radial-gradient(ellipse 800px 500px at 75% 50%, rgba(59,130,246,0.1) 0%, transparent 70%),
    radial-gradient(rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px;
}
.s-product .info-block h4 { color: var(--blue); }
.s-product .info-block:hover {
  border-color: rgba(59,130,246,0.25);
  box-shadow: 0 0 30px rgba(59,130,246,0.15);
}

.prod-mockup-group { position: relative; width: 360px; height: 300px; }
.prod-phone {
  position: absolute; left: 0; bottom: 0; width: 120px; z-index: 2;
  background: var(--bg-2); border-radius: 18px; padding: 6px;
  border: 1px solid rgba(59,130,246,0.22);
  box-shadow: 0 16px 50px rgba(0,0,0,0.5), 0 0 30px rgba(59,130,246,0.08);
}
.pp-screen { background: var(--bg); border-radius: 13px; overflow: hidden; aspect-ratio: 9/16; }
.pp-bar { height: 22px; background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.pp-content { flex: 1; }

.prod-tablet {
  position: absolute; right: 0; top: 0; width: 245px;
  background: var(--bg-2); border-radius: 12px; padding: 8px;
  border: 1px solid rgba(59,130,246,0.2);
  box-shadow: 0 16px 50px rgba(0,0,0,0.5), 0 0 30px rgba(59,130,246,0.06);
}
.pt-screen {
  display: flex; gap: 6px; background: var(--bg);
  border-radius: 8px; padding: 8px; aspect-ratio: 4/3;
}
.pt-sidebar { width: 36px; background: var(--glass-2); border-radius: 4px; flex-shrink: 0; }
.pt-main { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.pt-cards { display: flex; gap: 4px; }
.pt-cards span {
  flex: 1; height: 28px;
  background: linear-gradient(135deg, rgba(59,130,246,0.2), rgba(34,211,238,0.1));
  border: 1px solid rgba(59,130,246,0.15); border-radius: 4px;
}
.pt-chart {
  flex: 1;
  background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(34,211,238,0.05));
  border: 1px solid rgba(59,130,246,0.1); border-radius: 4px;
}

/* ══════════════════════════════════════
   S4 优势 — 深绿 (原浅灰，现统一暗色)
   ══════════════════════════════════════ */
.s-advantage {
  --accent: var(--green);
  background-color: #010d07;
  background-image:
    radial-gradient(ellipse 800px 600px at 25% 50%, rgba(16,185,129,0.1) 0%, transparent 70%),
    radial-gradient(rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px;
  color: var(--text);
}
.s-advantage .sec-desc { color: var(--text-2); }
.s-advantage .info-block h4 { color: var(--green); }
.s-advantage .info-block:hover {
  border-color: rgba(16,185,129,0.25); box-shadow: var(--glow-g);
}

.adv-chart {
  display: flex; align-items: flex-end; gap: 16px;
  height: 260px; padding: 20px 20px 36px;
}
.chart-bar {
  flex: 1; height: var(--h); border-radius: 6px 6px 0 0;
  background: linear-gradient(to top, var(--green), var(--cyan));
  position: relative; min-width: 36px;
  box-shadow: 0 0 18px rgba(16,185,129,0.3), 0 0 8px rgba(34,211,238,0.15);
  animation: growBar .8s cubic-bezier(0.16,1,0.3,1) both;
}
.chart-bar::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; border-radius: 3px;
  background: var(--cyan); box-shadow: 0 0 10px var(--cyan);
}
.chart-bar span {
  position: absolute; bottom: -26px; left: 50%; transform: translateX(-50%);
  font-size: 11px; color: var(--text-2); font-weight: 600; white-space: nowrap;
}
@keyframes growBar { from { height: 0; opacity: 0; } }

/* ══════════════════════════════════════
   S5 产品展示 — 深空双色晕
   ══════════════════════════════════════ */
.s-showcase {
  --accent: var(--cyan);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 600px 500px at 20% 50%, rgba(34,211,238,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 600px 400px at 85% 50%, rgba(168,85,247,0.06) 0%, transparent 55%),
    radial-gradient(rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px;
  color: var(--text);
}
.s-showcase .sec-desc { color: var(--text-2); }

.showcase-left { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.showcase-main-frame {
  width: 210px;
  background: var(--bg-2); border-radius: 30px; padding: 10px;
  border: 1px solid rgba(34,211,238,0.22);
  box-shadow: 0 20px 60px rgba(0,0,0,0.45), 0 0 50px rgba(34,211,238,0.12);
  position: relative; z-index: 2;
}
.showcase-main-frame img { width: 100%; border-radius: 22px; display: block; }

.showcase-carousel { width: 480px; position: relative; }
.showcase-swiper { overflow: visible !important; }
.showcase-swiper .swiper-wrapper { align-items: center; }
.showcase-swiper .swiper-slide {
  width: 62px !important; border-radius: 10px; overflow: hidden;
  cursor: pointer; transition: .4s;
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  opacity: 0.55;
}
.showcase-swiper .swiper-slide-active {
  opacity: 1;
  border-color: rgba(34,211,238,0.45);
  box-shadow: 0 0 20px rgba(34,211,238,0.22);
}
.showcase-swiper .swiper-slide img { width: 100%; height: auto; display: block; }

/* ══════════════════════════════════════
   S6 战略联盟 — 极暗星空
   ══════════════════════════════════════ */
.s-alliance {
  --accent: var(--amber);
  background-color: #010205;
  background-image:
    radial-gradient(ellipse 1000px 400px at 50% 50%, rgba(34,211,238,0.04) 0%, transparent 70%),
    radial-gradient(rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px;
}

.partner-tabs { display: flex; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.partner-tabs li {
  padding: 10px 16px; border-radius: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  cursor: pointer; transition: .3s;
  display: flex; align-items: center; justify-content: center;
}
.partner-tabs li img {
  height: 26px; width: auto;
  filter: brightness(0.62) saturate(0.8); transition: .3s;
}
.partner-tabs li.active {
  background: rgba(245,158,11,0.1);
  border-color: rgba(245,158,11,0.42);
  box-shadow: 0 0 22px rgba(245,158,11,0.16);
}
.partner-tabs li.active img { filter: brightness(1) saturate(1.2); }
.partner-tabs li:not(.active):hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.18);
}
.partner-tabs li:not(.active):hover img { filter: brightness(0.85); }
.partner-desc {
  font-size: 14px; color: var(--text-2); line-height: 2;
  min-height: 80px; padding: 16px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border); border-radius: 10px;
}
.alliance-img {
  max-width: 420px; width: 100%; height: auto;
  filter: drop-shadow(0 20px 50px rgba(0,0,0,0.6))
          drop-shadow(0 0 30px rgba(34,211,238,0.1));
}

/* ══════════════════════════════════════
   S7 搭建平台 — 紫青渐变
   ══════════════════════════════════════ */
.s-build {
  --accent: var(--purple);
  background-color: #04020e;
  background-image:
    radial-gradient(ellipse 800px 600px at 75% 45%, rgba(168,85,247,0.1) 0%, transparent 65%),
    radial-gradient(ellipse 500px 400px at 15% 65%, rgba(34,211,238,0.07) 0%, transparent 55%),
    radial-gradient(rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px;
}

.subscribe-box {
  display: flex; max-width: 440px;
  border: 1px solid rgba(168,85,247,0.32);
  border-radius: 10px; overflow: hidden;
  box-shadow: 0 0 32px rgba(168,85,247,0.12);
  background: rgba(168,85,247,0.05);
}
.subscribe-box input {
  flex: 1; padding: 14px 18px; border: none; outline: none;
  font-size: 14px; background: transparent; color: var(--text);
}
.subscribe-box input::placeholder { color: var(--text-2); }
.sub-btn {
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  color: #020817; font-size: 14px; font-weight: 700;
  white-space: nowrap; border: none; cursor: pointer; transition: .3s;
}
.sub-btn:hover { filter: brightness(1.1); }

/* 火箭动画 */
.rocket-wrap { position: relative; width: 200px; height: 320px; }
.rocket {
  position: absolute; left: 50%; top: 20%; transform: translateX(-50%);
  animation: rocketFloat 3s ease-in-out infinite;
}
.rocket-body {
  width: 44px; height: 110px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.95), rgba(200,220,255,0.7));
  border-radius: 22px 22px 10px 10px; position: relative;
  box-shadow: 0 0 30px rgba(34,211,238,0.3), 0 0 80px rgba(168,85,247,0.15);
  border: 1px solid rgba(34,211,238,0.3);
}
.rocket-body::before {
  content: ''; position: absolute; top: 22px; left: 50%; transform: translateX(-50%);
  width: 16px; height: 16px; border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  box-shadow: 0 0 12px var(--cyan);
}
.rocket-body::after {
  content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 15px solid transparent; border-right: 15px solid transparent;
  border-top: 18px solid rgba(168,85,247,0.85);
}
.rocket-flame {
  width: 22px; height: 36px; margin: 10px auto 0;
  background: linear-gradient(to bottom, var(--cyan), var(--purple), transparent);
  border-radius: 50%;
  animation: flame .25s ease-in-out infinite alternate;
  box-shadow: 0 0 22px rgba(168,85,247,0.5), 0 0 40px rgba(34,211,238,0.3);
}
.rocket-trail {
  position: absolute; left: 50%; top: 60%; transform: translateX(-50%);
  width: 4px; height: 140px;
  background: linear-gradient(to bottom, rgba(168,85,247,0.5), transparent);
  border-radius: 2px; box-shadow: 0 0 8px rgba(168,85,247,0.3);
}
@keyframes rocketFloat {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(-18px); }
}
@keyframes flame {
  from { transform: scaleY(1) scaleX(1); opacity: .9; }
  to   { transform: scaleY(1.25) scaleX(.75); opacity: 1; }
}

/* ══════════════════════════════════════
   fullpage.js 覆盖
   ══════════════════════════════════════ */
.fp-overflow { height: 100%; display: flex; align-items: center; }
#fp-nav { display: none; }

/* ══════════════════════════════════════
   响应式
   ══════════════════════════════════════ */
@media (max-width: 900px) {
  .page-nav { display: none; }
  .float-btns { right: 12px; }
  .float-btns li a { width: 42px; height: 42px; }
  .float-btns svg { width: 22px; height: 22px; }

  .fp-content, .fp-content.reverse {
    flex-direction: column; padding: 80px 22px 40px; gap: 26px;
    justify-content: flex-start; overflow-y: auto;
  }
  h1 { font-size: 30px; }
  h2 { font-size: 26px; padding-top: 14px; }

  .hero-devices { width: 280px; height: 240px; }
  .device-phone { width: 110px; }
  .device-laptop { width: 185px; }

  .coop-card-stack { width: 200px; height: 200px; }
  .coop-c.c1, .coop-c.c2, .coop-c.c3 { width: 160px; height: 110px; }

  .prod-mockup-group { width: 260px; height: 220px; }
  .prod-phone { width: 90px; }
  .prod-tablet { width: 170px; }

  .alliance-img { max-width: 260px; }
  .rocket-wrap { width: 140px; height: 220px; }

  .info-blocks { flex-direction: column; }
  .info-divider { display: none; }

  .adv-chart { height: 160px; padding: 12px 12px 30px; gap: 10px; }
  .chart-bar span { font-size: 10px; bottom: -22px; }

  .showcase-main-frame { width: 160px; }
  .showcase-carousel { width: 280px; }
  .showcase-swiper .swiper-slide { width: 48px !important; }

  .subscribe-box { flex-direction: column; }
  .subscribe-box input {
    border-bottom: 1px solid rgba(168,85,247,0.2);
    border-radius: 10px 10px 0 0;
  }
  .sub-btn { border-radius: 0 0 10px 10px; text-align: center; }

  .nav-tools-btn { font-size: 0.75rem; padding: 5px 12px; right: 14px; }
}