:root {
  --primary: #0a1628;
  --secondary: #0d2244;
  --accent: #1a6dff;
  --accent2: #00d4ff;
  --accent3: #4facfe;
  --text: #e8f0ff;
  --text-muted: #8aa3c8;
  --card-bg: #ffffff;
  --card-border: #e8eef8;
  --blue-dark: #0b1e3d;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Noto Sans SC', sans-serif;
  background: #f5f7fc;
  color: #1a2540;
  overflow-x: hidden;
  font-size: 17px;
}

/* ── NAVBAR ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(8, 18, 40, 0.97);
  backdrop-filter: blur(12px);
  padding: 0 5%;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
  border-bottom: 1px solid rgba(26,109,255,0.2);
}
.logo { font-family: 'Rajdhani', sans-serif; font-size: 1.9rem; font-weight: 700; color: #fff; letter-spacing: 1px; }
.logo span { color: #00d4ff; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: rgba(255,255,255,0.75); text-decoration: none; font-size: 1rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: #00d4ff; }
.nav-cta { background: linear-gradient(135deg, #1a6dff, #00d4ff); color: #fff; border: none; padding: 10px 26px; border-radius: 6px; font-size: 1rem; font-weight: 600; cursor: pointer; font-family: 'Noto Sans SC', sans-serif; text-decoration: none; }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #060f24 0%, #0d1f45 40%, #0a1a3a 70%, #0c2250 100%);
  position: relative; overflow: hidden;
  display: flex; align-items: center;
  padding: 90px 6% 80px;
  gap: 60px;
}
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 60% at 70% 50%, rgba(26,109,255,0.18) 0%, transparent 70%), radial-gradient(ellipse 40% 40% at 20% 80%, rgba(0,212,255,0.1) 0%, transparent 60%); }
.hero-grid { position: absolute; inset: 0; opacity: 0.06; background-image: linear-gradient(rgba(26,109,255,0.5) 1px, transparent 1px), linear-gradient(90deg, rgba(26,109,255,0.5) 1px, transparent 1px); background-size: 60px 60px; }

.hero-left { position: relative; z-index: 2; flex: 0 0 500px; max-width: 500px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(26,109,255,0.15); border: 1px solid rgba(26,109,255,0.4); color: #00d4ff; padding: 7px 18px; border-radius: 30px; font-size: 0.95rem; font-weight: 600; margin-bottom: 28px; letter-spacing: 0.5px; }
.hero-badge::before { content: '●'; font-size: 9px; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 { font-size: clamp(3rem, 5vw, 4.4rem); font-weight: 900; color: #fff; line-height: 1.15; margin-bottom: 22px; }
.hero h1 .highlight { background: linear-gradient(135deg, #1a6dff, #00d4ff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { color: rgba(255,255,255,0.65); font-size: 1.15rem; line-height: 1.75; margin-bottom: 36px; }
.hero-checks { margin-bottom: 42px; }
.hero-checks li { list-style: none; color: rgba(255,255,255,0.88); font-size: 1.05rem; padding: 7px 0; display: flex; align-items: center; gap: 12px; }
.hero-checks li::before { content: '✓'; width: 24px; height: 24px; background: linear-gradient(135deg, #1a6dff, #00d4ff); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.82rem; font-weight: 700; color: #fff; flex-shrink: 0; line-height: 24px; text-align: center; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary { background: linear-gradient(135deg, #1a6dff, #00d4ff); color: #fff; padding: 16px 36px; border-radius: 8px; font-size: 1.1rem; font-weight: 700; border: none; cursor: pointer; text-decoration: none; font-family: 'Noto Sans SC', sans-serif; transition: transform 0.2s, box-shadow 0.2s; box-shadow: 0 8px 30px rgba(26,109,255,0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(26,109,255,0.5); }
.btn-outline { background: transparent; border: 1.5px solid rgba(255,255,255,0.3); color: rgba(255,255,255,0.85); padding: 16px 36px; border-radius: 8px; font-size: 1.1rem; font-weight: 600; cursor: pointer; text-decoration: none; font-family: 'Noto Sans SC', sans-serif; transition: border-color 0.2s, color 0.2s; }
.btn-outline:hover { border-color: #00d4ff; color: #00d4ff; }

/* ── HERO RIGHT: Globe Visual ── */
.hero-right {
  position: relative; z-index: 2;
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 24px;
}
.globe-wrap {
  position: relative;
  width: 320px; height: 320px;
}
.globe-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1.5px solid rgba(26,109,255,0.25);
  animation: rotate 18s linear infinite;
}
.globe-ring:nth-child(1) { transform: rotateX(70deg); }
.globe-ring:nth-child(2) { transform: rotateX(70deg) rotateZ(60deg); animation-duration: 22s; animation-direction: reverse; }
.globe-ring:nth-child(3) { transform: rotateX(70deg) rotateZ(120deg); animation-duration: 26s; }
@keyframes rotate { from { transform: rotateX(70deg) rotateZ(0deg); } to { transform: rotateX(70deg) rotateZ(360deg); } }
.globe-core {
  position: absolute; inset: 30px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(26,109,255,0.35), rgba(0,212,255,0.08) 60%, rgba(10,22,40,0.95));
  border: 1px solid rgba(26,109,255,0.4);
  box-shadow: 0 0 60px rgba(26,109,255,0.25), inset 0 0 40px rgba(0,212,255,0.08);
}
.globe-dot {
  position: absolute;
  width: 10px; height: 10px;
  background: #00d4ff;
  border-radius: 50%;
  box-shadow: 0 0 10px #00d4ff, 0 0 20px rgba(0,212,255,0.6);
  animation: dotPulse 3s ease-in-out infinite;
}
.globe-dot:nth-child(1) { top: 60px; left: 80px; animation-delay: 0s; }
.globe-dot:nth-child(2) { top: 110px; right: 55px; animation-delay: 0.7s; }
.globe-dot:nth-child(3) { bottom: 80px; left: 100px; animation-delay: 1.4s; }
.globe-dot:nth-child(4) { top: 155px; left: 45px; animation-delay: 2.1s; }
@keyframes dotPulse { 0%,100%{transform:scale(1);opacity:1} 50%{transform:scale(1.8);opacity:0.5} }

.pulse-line {
  position: absolute;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, #00d4ff, transparent);
  border-radius: 2px;
  animation: lineFlash 2.5s ease-in-out infinite;
  opacity: 0;
}
.pulse-line:nth-child(1) { width: 80px; top: 65px; left: 90px; transform: rotate(-20deg); animation-delay: 0.2s; }
.pulse-line:nth-child(2) { width: 70px; top: 115px; right: 60px; transform: rotate(15deg); animation-delay: 0.9s; }
.pulse-line:nth-child(3) { width: 60px; bottom: 85px; left: 110px; transform: rotate(-30deg); animation-delay: 1.6s; }
@keyframes lineFlash { 0%,100%{opacity:0} 40%,60%{opacity:1} }

/* Stats row inside hero-right */
.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 14px; width: 100%; max-width: 420px;
}
.hero-stat {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(26,109,255,0.2);
  border-radius: 12px;
  padding: 14px 12px;
  text-align: center;
  backdrop-filter: blur(6px);
}
.hero-stat-num { font-family: 'Rajdhani', sans-serif; font-size: 1.7rem; font-weight: 700; background: linear-gradient(135deg, #1a6dff, #00d4ff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-stat-label { color: rgba(255,255,255,0.5); font-size: 0.8rem; margin-top: 2px; }

/* ── ADVANTAGES ── */
.advantages { background: #fff; padding: 90px 6%; }
section { padding: 90px 6%; }
.section-title { text-align: center; margin-bottom: 16px; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; color: #0b1e3d; }
.section-title span { color: #1a6dff; }
.section-sub { text-align: center; color: #6b7ea8; font-size: 1.05rem; margin-bottom: 54px; }
.divider { width: 60px; height: 4px; background: linear-gradient(90deg, #1a6dff, #00d4ff); border-radius: 2px; margin: 12px auto 44px; }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; max-width: 1100px; margin: 0 auto; }
.adv-card { background: #f8faff; border-radius: 16px; padding: 36px 30px; border: 1.5px solid #e8eef8; transition: box-shadow 0.3s, transform 0.3s; }
.adv-card:hover { box-shadow: 0 8px 30px rgba(26,109,255,0.1); transform: translateY(-4px); }
.adv-icon { width: 58px; height: 58px; background: linear-gradient(135deg, #eef3ff, #dde9ff); border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.adv-icon svg { width: 28px; height: 28px; stroke: #1a6dff; fill: none; stroke-width: 1.8; }
.adv-card h3 { font-size: 1.15rem; font-weight: 700; color: #1a2540; margin-bottom: 14px; }
.adv-card p { color: #6b7ea8; font-size: 0.97rem; line-height: 1.8; }

/* ── PLANS (HOVER TABS) ── */
.plans { background: #f5f7fc; }
.tab-nav {
  display: flex; justify-content: center; gap: 0;
  background: #fff; border-radius: 12px; border: 1.5px solid #e0e8f8;
  max-width: 640px; margin: 0 auto 52px; overflow: hidden;
}
.tab-btn {
  flex: 1; padding: 16px 10px;
  border: none; background: transparent;
  font-family: 'Noto Sans SC', sans-serif; font-size: 1rem; font-weight: 600;
  color: #6b7ea8; cursor: pointer; transition: all 0.25s;
  border-right: 1px solid #e0e8f8;
}
.tab-btn:last-child { border-right: none; }
.tab-btn.active,
.tab-btn:hover { background: linear-gradient(135deg, #1a6dff, #3a9dff); color: #fff; }
.tab-pane { display: none; }
.tab-pane.active { display: block; }
.plans-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 22px; max-width: 1200px; margin: 0 auto; }
.plan-card { background: #fff; border-radius: 16px; border: 1.5px solid #e0e8f8; padding: 30px 26px; transition: box-shadow 0.3s, transform 0.3s; position: relative; overflow: hidden; }
.plan-card:hover { box-shadow: 0 10px 40px rgba(26,109,255,0.14); transform: translateY(-4px); }
.plan-card.featured { border-color: #1a6dff; box-shadow: 0 4px 20px rgba(26,109,255,0.15); }
.plan-card.featured::before { content: '推荐'; position: absolute; top: 18px; right: -22px; background: linear-gradient(135deg, #1a6dff, #00d4ff); color: #fff; font-size: 0.8rem; font-weight: 700; padding: 4px 34px; transform: rotate(45deg); }
.plan-name { font-size: 1.05rem; font-weight: 700; color: #1a6dff; margin-bottom: 18px; }
.plan-price { font-family: 'Rajdhani', sans-serif; font-size: 2.2rem; font-weight: 700; color: #0b1e3d; margin-bottom: 4px; }
.plan-price span { font-size: 1.1rem; font-weight: 500; color: #8aa3c8; }
.plan-divider { height: 1px; background: #e8eef8; margin: 18px 0; }
.plan-features { list-style: none; }
.plan-features li { padding: 8px 0; font-size: 0.94rem; color: #4a5e80; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #f0f4fc; }
.plan-features li:last-child { border-bottom: none; }
.plan-features .label { color: #8aa3c8; font-size: 0.9rem; }
.plan-features .val { font-weight: 600; color: #1a2540; }
.plan-cta { width: 100%; margin-top: 22px; padding: 13px; background: linear-gradient(135deg, #1a6dff, #00d4ff); color: #fff; border: none; border-radius: 8px; font-family: 'Noto Sans SC', sans-serif; font-size: 1rem; font-weight: 700; cursor: pointer; transition: opacity 0.2s; text-decoration: none; display: block; text-align: center; }
.plan-cta:hover { opacity: 0.88; }

/* ── FAQ (2-col, hover) ── */
.faq { background: #fff; }
.faq-wrap { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.faq-item {
  border: 1.5px solid #e0e8f8;
  border-radius: 14px;
  overflow: hidden;
  transition: box-shadow 0.3s, border-color 0.3s;
}
.faq-item:hover { box-shadow: 0 6px 24px rgba(26,109,255,0.12); border-color: #1a6dff; }
.faq-q {
  padding: 22px 26px 20px;
  font-size: 1.08rem; font-weight: 600; color: #1a2540;
  background: #fff;
  display: flex; justify-content: space-between; align-items: center;
  cursor: default;
  transition: background 0.25s, color 0.25s;
  user-select: none;
  gap: 12px;
}
.faq-item:hover .faq-q { background: #1a6dff; color: #fff; }
.faq-q .arrow { font-size: 0.85rem; transition: transform 0.3s; flex-shrink: 0; opacity: 0.6; }
.faq-item:hover .faq-q .arrow { transform: rotate(180deg); opacity: 1; }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4,0,0.2,1);
  background: #f8faff;
}
.faq-item:hover .faq-a { max-height: 240px; }
.faq-a-inner { padding: 20px 26px; color: #6b7ea8; font-size: 0.98rem; line-height: 1.85; }

/* ── CONTACT ── */
.contact { background: linear-gradient(135deg, #060f24, #0d1f45); padding: 90px 6%; text-align: center; position: relative; overflow: hidden; }
.contact::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 50% 60% at 50% 50%, rgba(26,109,255,0.2) 0%, transparent 70%); }
.contact-content { position: relative; z-index: 2; }
.contact h2 { color: #fff; font-size: 2.3rem; font-weight: 800; margin-bottom: 16px; }
.contact p { color: rgba(255,255,255,0.6); margin-bottom: 44px; font-size: 1.05rem; }
.contact-btns { display: flex; justify-content: center; gap: 22px; flex-wrap: wrap; }
.contact-btn { display: flex; align-items: center; gap: 10px; padding: 16px 32px; border-radius: 10px; font-size: 1.05rem; font-weight: 600; text-decoration: none; transition: transform 0.2s; font-family: 'Noto Sans SC', sans-serif; }
.contact-btn:hover { transform: translateY(-2px); }
.btn-tg { background: linear-gradient(135deg, #229ed9, #1a6dff); color: #fff; }
.btn-kefu { background: linear-gradient(135deg, #0e5bec, #0099ff); color: #fff; }

footer { background: #040c1c; padding: 30px 6%; text-align: center; color: rgba(255,255,255,0.35); font-size: 0.9rem; border-top: 1px solid rgba(26,109,255,0.1); }
footer a { color: rgba(26,109,255,0.7); text-decoration: none; }

@media (max-width: 1100px) {
  .adv-grid { grid-template-columns: repeat(2,1fr); }
  .hero-left { flex: 1; max-width: 100%; }
  .hero-right { display: none; }
  .faq-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .adv-grid { grid-template-columns: 1fr; }
  .tab-btn { font-size: 0.88rem; padding: 13px 6px; }
  .faq-wrap { grid-template-columns: 1fr; }
}