/* ================= 基础变量 ================= */
:root {
  --bg: #070710;
  --bg-2: #0c0c1a;
  --bg-3: #111124;
  --card: rgba(255, 255, 255, 0.045);
  --card-border: rgba(255, 255, 255, 0.09);
  --text: #eeeff8;
  --muted: #9a9ab8;
  --cyan: #25f4ee;
  --pink: #fe2c55;
  --purple: #7b5cff;
  --grad: linear-gradient(100deg, #25f4ee 0%, #7b5cff 50%, #fe2c55 100%);
  --radius: 18px;
  --header-h: 72px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
.about-img img { min-height: 340px; background: #12122a; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { width: min(1180px, 92%); margin: 0 auto; }
.hide-mb { display: inline; }
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ================= 通用按钮 ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  border: 1px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 30px rgba(254, 44, 85, 0.28), 0 4px 16px rgba(37, 244, 238, 0.18);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(254, 44, 85, 0.4); }
.btn-ghost { border-color: rgba(255, 255, 255, 0.28); color: #fff; background: rgba(255, 255, 255, 0.04); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-3px); }
.btn-block { width: 100%; }

/* ================= 顶部导航 ================= */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(8, 8, 18, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: rgba(255, 255, 255, 0.07);
}
.nav-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; }

.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-mark { width: 30px; height: 30px; filter: drop-shadow(0 0 8px rgba(37, 244, 238, 0.45)); }
.logo-text { font-size: 18px; font-weight: 800; letter-spacing: 1px; display: flex; flex-direction: column; line-height: 1.1; }
.logo-text em { font-style: normal; font-size: 10px; font-weight: 500; letter-spacing: 2px; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 30px; }
.nav a {
  font-size: 15px;
  color: #d5d6e8;
  position: relative;
  transition: color 0.2s;
  padding: 6px 0;
}
.nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--grad);
  border-radius: 2px;
  transition: width 0.25s;
}
.nav a:not(.nav-cta):hover { color: #fff; }
.nav a:not(.nav-cta):hover::after { width: 100%; }
.nav a.active { color: var(--cyan); }
.nav-cta {
  padding: 9px 22px;
  border-radius: 999px;
  background: var(--grad);
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(123, 92, 255, 0.35);
}
.nav-cta:hover { transform: translateY(-2px); }

.nav-toggle { display: none; background: none; border: 0; width: 40px; height: 40px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px auto; border-radius: 2px; transition: 0.3s; }

/* ================= 首屏 ================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 90px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url("../images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom { to { transform: scale(1.14); } }
.hero-mask {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 600px at 70% 20%, rgba(123, 92, 255, 0.25), transparent 60%),
    linear-gradient(180deg, rgba(7, 7, 16, 0.78) 0%, rgba(7, 7, 16, 0.86) 55%, var(--bg) 100%),
    linear-gradient(90deg, rgba(7, 7, 16, 0.92) 0%, rgba(7, 7, 16, 0.4) 60%, transparent 100%);
}
.starfield { position: absolute; inset: 0; pointer-events: none; }
.starfield i {
  position: absolute;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: #fff;
  opacity: 0.5;
  animation: twinkle 3s infinite ease-in-out;
}
@keyframes twinkle { 0%, 100% { opacity: 0.15; } 50% { opacity: 0.85; } }

.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-block;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid rgba(37, 244, 238, 0.35);
  background: rgba(37, 244, 238, 0.08);
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 26px;
}
.hero-title {
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: 2px;
  margin-bottom: 24px;
}
.hero-desc { font-size: clamp(15px, 1.6vw, 18px); color: #c3c4dd; margin-bottom: 38px; }
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 64px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 56px;
  justify-content: start;
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong {
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 900;
  line-height: 1.1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-stats span { color: var(--muted); font-size: 14px; margin-top: 6px; }

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 26px;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 14px;
  z-index: 2;
}
.hero-scroll span {
  position: absolute;
  left: 50%; top: 8px;
  width: 4px; height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--cyan);
  animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ================= 区块通用 ================= */
.section { padding: 110px 0; position: relative; }
.section-alt { background: var(--bg-2); }

.section-head { text-align: center; margin-bottom: 64px; }
.section-en {
  font-size: 13px;
  letter-spacing: 5px;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 900;
  letter-spacing: 1px;
  position: relative;
  display: inline-block;
  padding-bottom: 18px;
  margin-bottom: 16px;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  transform: translateX(-50%);
  width: 56px; height: 4px;
  border-radius: 4px;
  background: var(--grad);
}
.section-desc { color: var(--muted); font-size: 16px; }

/* ================= 关于我们 ================= */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 90px;
}
.about-text h3 { font-size: 26px; margin-bottom: 22px; line-height: 1.4; }
.about-text p { color: #b9bad2; margin-bottom: 18px; font-size: 16px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.about-tags span {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13.5px;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: #d8d9ee;
  transition: 0.25s;
}
.about-tags span:hover { border-color: var(--cyan); color: var(--cyan); }
.about-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--card-border);
  position: relative;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}
.about-img::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(37, 244, 238, 0.14), transparent 40%, rgba(254, 44, 85, 0.14));
  z-index: 1;
  pointer-events: none;
}

/* 时间线 */
.timeline-caption { text-align: center; font-size: 24px; margin-bottom: 48px; }
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 9px; left: 4%; right: 4%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple), var(--pink));
  opacity: 0.5;
}
.tl-item { position: relative; padding-top: 34px; }
.tl-dot {
  position: absolute;
  top: 2px; left: 0;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--purple);
  box-shadow: 0 0 14px rgba(123, 92, 255, 0.7);
}
.tl-dot-active { border-color: var(--pink); box-shadow: 0 0 18px rgba(254, 44, 85, 0.9); animation: pulseDot 2s infinite; }
@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(254, 44, 85, 0.55); }
  50% { box-shadow: 0 0 0 9px rgba(254, 44, 85, 0); }
}
.tl-year { font-size: 18px; font-weight: 800; color: var(--cyan); margin-bottom: 10px; }
.tl-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: transform 0.3s, border-color 0.3s;
  height: 100%;
}
.tl-card:hover { transform: translateY(-6px); border-color: rgba(123, 92, 255, 0.5); }
.tl-card-hot {
  background: linear-gradient(160deg, rgba(254, 44, 85, 0.1), rgba(123, 92, 255, 0.08));
  border-color: rgba(254, 44, 85, 0.4);
}
.tl-card h4 { font-size: 17px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tl-card h4 i {
  font-style: normal;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--grad);
  color: #fff;
  letter-spacing: 1px;
}
.tl-card p { color: var(--muted); font-size: 14px; }
.tl-card b, .case-list b { color: #fff; }

/* ================= 业务板块 ================= */
.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-bottom: 80px; }
.biz-card {
  position: relative;
  padding: 40px 36px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--card-border);
  overflow: hidden;
  transition: transform 0.35s, border-color 0.35s;
}
.biz-card::after {
  content: "";
  position: absolute;
  top: -60%; right: -30%;
  width: 70%; height: 160%;
  background: radial-gradient(circle, rgba(37, 244, 238, 0.14), transparent 65%);
  opacity: 0;
  transition: opacity 0.35s;
}
.biz-card:nth-child(2)::after { background: radial-gradient(circle, rgba(254, 44, 85, 0.14), transparent 65%); }
.biz-card:hover { transform: translateY(-8px); border-color: rgba(37, 244, 238, 0.45); }
.biz-card:nth-child(2):hover { border-color: rgba(254, 44, 85, 0.45); }
.biz-card:hover::after { opacity: 1; }
.biz-icon {
  width: 58px; height: 58px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(37, 244, 238, 0.1);
  color: var(--cyan);
  margin-bottom: 22px;
  border: 1px solid rgba(37, 244, 238, 0.25);
}
.biz-card:nth-child(2) .biz-icon { background: rgba(254, 44, 85, 0.1); color: var(--pink); border-color: rgba(254, 44, 85, 0.25); }
.biz-icon svg { width: 30px; height: 30px; }
.biz-card h3 { font-size: 23px; margin-bottom: 14px; }
.biz-card p { color: var(--muted); font-size: 15px; margin-bottom: 24px; }
.biz-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.biz-tags span {
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #c8c9e0;
}

.capability-wrap {
  text-align: center;
  padding: 54px 40px;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background:
    radial-gradient(800px 200px at 50% 0%, rgba(123, 92, 255, 0.14), transparent 70%),
    var(--bg-3);
}
.capability-wrap h3 { font-size: 25px; margin-bottom: 10px; }
.cap-sub { color: var(--muted); margin-bottom: 38px; }
.cap-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.cap-item {
  padding: 26px 10px;
  border-radius: 14px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.03);
  transition: transform 0.3s, background 0.3s, border-color 0.3s;
}
.cap-item:hover { transform: translateY(-6px); background: rgba(123, 92, 255, 0.12); border-color: rgba(123, 92, 255, 0.5); }
.cap-item b { display: block; font-size: 16.5px; margin-bottom: 8px; }
.cap-item small { color: var(--muted); font-size: 12.5px; }

/* ================= 五大核心能力 ================= */
.core-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.core-card {
  position: relative;
  padding: 38px 30px 34px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--card-border);
  transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
  overflow: hidden;
}
.core-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}
.core-card:hover { transform: translateY(-8px); border-color: rgba(123, 92, 255, 0.5); box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35); }
.core-card:hover::before { transform: scaleX(1); }
.core-card-wide { grid-column: span 1; }
.core-no {
  font-size: 40px;
  font-weight: 900;
  background: linear-gradient(180deg, rgba(37, 244, 238, 0.9), rgba(123, 92, 255, 0.25));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.core-card h3 { font-size: 21px; margin: 16px 0 12px; }
.core-card p { color: var(--muted); font-size: 14.5px; }

/* ================= AI 区块 ================= */
.ai-section { background: var(--bg-2); overflow: hidden; }
.ai-glow {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 244, 238, 0.12), transparent 65%);
  top: -200px; left: -200px;
  pointer-events: none;
}
.ai-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; align-items: center; }
.ai-img { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--card-border); box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5); }
.ai-img-badge {
  position: absolute;
  left: 20px; bottom: 20px;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(7, 7, 16, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(37, 244, 238, 0.4);
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: 1px;
}
.ai-features { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.ai-feat {
  display: flex;
  gap: 14px;
  padding: 22px 20px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--card-border);
  transition: transform 0.3s, border-color 0.3s;
}
.ai-feat:hover { transform: translateY(-5px); border-color: rgba(37, 244, 238, 0.4); }
.ai-feat-ic {
  flex: 0 0 44px;
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(37, 244, 238, 0.09);
  border: 1px solid rgba(37, 244, 238, 0.22);
  color: var(--cyan);
}
.ai-feat-ic svg { width: 22px; height: 22px; }
.ai-feat h4 { font-size: 15.5px; margin-bottom: 4px; }
.ai-feat p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ================= 案例 ================= */
.case-tabs { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.case-tab {
  padding: 12px 28px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--muted);
  font-size: 15px;
  transition: 0.25s;
}
.case-tab:hover { color: #fff; border-color: rgba(255, 255, 255, 0.3); }
.case-tab.active {
  background: var(--grad);
  color: #fff;
  border-color: transparent;
  font-weight: 600;
  box-shadow: 0 8px 26px rgba(254, 44, 85, 0.3);
}

.case-panel { display: none; animation: fadeUp 0.5s ease; }
.case-panel.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

.case-banner { position: relative; border-radius: var(--radius); overflow: hidden; height: 380px; border: 1px solid var(--card-border); }
.case-banner img { width: 100%; height: 100%; object-fit: cover; }
.case-banner-mask {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(7, 7, 16, 0.92) 0%, rgba(7, 7, 16, 0.55) 55%, rgba(7, 7, 16, 0.25) 100%);
}
.case-banner-text { position: absolute; left: 44px; bottom: 38px; right: 44px; max-width: 680px; }
.case-industry {
  display: inline-block;
  font-size: 13px;
  color: var(--cyan);
  border: 1px solid rgba(37, 244, 238, 0.4);
  background: rgba(7, 7, 16, 0.55);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.case-banner-text h3 { font-size: clamp(20px, 2.4vw, 28px); line-height: 1.4; margin-bottom: 8px; }
.case-banner-text p { color: #cfd0e6; }

.case-body { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; margin: 40px 0; }
.case-col h4 {
  font-size: 17px;
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--pink);
}
.case-col p { color: var(--muted); font-size: 14.5px; margin-bottom: 22px; }
.case-list li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14.5px;
  margin-bottom: 12px;
}
.case-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}
.case-steps li {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  font-size: 14px;
  color: var(--muted);
}
.case-steps li span {
  flex: 0 0 auto;
  font-weight: 700;
  color: var(--cyan);
  font-size: 13.5px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding: 34px;
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(37, 244, 238, 0.08), rgba(123, 92, 255, 0.08), rgba(254, 44, 85, 0.08));
  border: 1px solid var(--card-border);
}
.metric { text-align: center; }
.metric strong {
  display: block;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.15;
}
.metric span { font-size: 13.5px; color: var(--muted); }

/* 行业案例墙 */
.wall-caption { text-align: center; font-size: 23px; margin: 90px 0 36px; }
.wall-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.wall-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-3);
  border: 1px solid var(--card-border);
  transition: transform 0.35s, border-color 0.35s;
}
.wall-card:hover { transform: translateY(-8px); border-color: rgba(123, 92, 255, 0.5); }
.wall-img { height: 190px; overflow: hidden; }
.wall-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.wall-card:hover .wall-img img { transform: scale(1.08); }
.wall-body { padding: 22px 20px 24px; }
.wall-body h4 { font-size: 16px; margin-bottom: 12px; }
.wall-body li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}
.wall-body li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--pink);
}

/* 专项服务 */
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 70px; }
.spec-card {
  padding: 36px 34px;
  border-radius: var(--radius);
  background: var(--bg-3);
  border: 1px solid var(--card-border);
  position: relative;
  transition: transform 0.35s, border-color 0.35s;
}
.spec-card:hover { transform: translateY(-6px); border-color: rgba(37, 244, 238, 0.4); }
.spec-card h4 { font-size: 21px; margin-bottom: 8px; }
.spec-sub { color: var(--cyan); font-size: 13.5px; margin-bottom: 20px; }
.spec-card li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 10px;
}
.spec-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--grad);
}
.spec-highlight {
  margin-top: 22px;
  padding: 16px 20px;
  border-radius: 12px;
  background: rgba(37, 244, 238, 0.07);
  border: 1px dashed rgba(37, 244, 238, 0.35);
  font-size: 14.5px;
  color: #d8d9ee;
}
.spec-highlight b { color: var(--cyan); }

/* ================= 达人 / 品牌 / 活动 ================= */
.creator-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-bottom: 80px; }
.creator-card {
  text-align: center;
  padding: 30px 16px 24px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--card-border);
  transition: transform 0.3s, border-color 0.3s;
}
.creator-card:hover { transform: translateY(-7px); border-color: rgba(254, 44, 85, 0.45); }
.creator-avatar {
  width: 70px; height: 70px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(140deg, var(--c1), var(--c2));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}
.creator-card h4 { font-size: 14px; word-break: break-all; }
.creator-fans {
  font-size: 20px;
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 4px 0;
}
.creator-cat { font-size: 12.5px; color: var(--muted); }

.brand-wall {
  text-align: center;
  padding: 56px 40px;
  margin-bottom: 90px;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background:
    radial-gradient(700px 260px at 50% 0%, rgba(254, 44, 85, 0.1), transparent 70%),
    var(--bg-2);
}
.brand-wall h3 { font-size: 24px; margin-bottom: 30px; }
.brand-wall h3 span { font-size: 32px; padding: 0 4px; }
.brand-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.brand-tags span {
  padding: 12px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #d6d7ec;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: 0.25s;
}
.brand-tags span:hover { color: #fff; border-color: var(--cyan); transform: translateY(-3px); }

.events {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 48px;
  align-items: center;
}
.events-info .section-en { text-align: left; }
.events-info h3 { font-size: 27px; margin-bottom: 16px; }
.events-info p { color: var(--muted); font-size: 15px; }
.event-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.event-card {
  padding: 26px 24px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--card-border);
  transition: transform 0.3s, border-color 0.3s;
}
.event-card:hover { transform: translateY(-5px); border-color: rgba(123, 92, 255, 0.5); }
.event-date { font-size: 12.5px; color: var(--pink); font-weight: 700; letter-spacing: 1px; margin-bottom: 10px; }
.event-card h4 { font-size: 17px; margin-bottom: 6px; }
.event-card p { color: var(--muted); font-size: 13.5px; }

/* ================= CTA / 联系 ================= */
.cta-section { position: relative; padding: 120px 0; overflow: hidden; }
.cta-bg {
  position: absolute; inset: 0;
  background-image: url("../images/cta-bg.jpg");
  background-size: cover;
  background-position: center;
}
.cta-mask {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 20% 30%, rgba(123, 92, 255, 0.22), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, rgba(7, 7, 16, 0.82) 25%, rgba(7, 7, 16, 0.88) 75%, var(--bg-2) 100%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}
.cta-text h2 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.35; margin-bottom: 22px; }
.cta-text h2 em { font-style: normal; }
.cta-text p { color: #c3c4dd; font-size: 16px; margin-bottom: 28px; }
.cta-points { display: flex; flex-direction: column; gap: 12px; }
.cta-points li {
  position: relative;
  padding-left: 30px;
  color: #d8d9ee;
  font-size: 15px;
}
.cta-points li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 1px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  font-size: 12px;
  display: grid;
  place-items: center;
}

.contact-form {
  padding: 38px 34px;
  border-radius: var(--radius);
  background: rgba(14, 14, 28, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}
.contact-form h3 { font-size: 22px; margin-bottom: 22px; text-align: center; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.2s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #6f7090; }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { border-color: var(--cyan); }
.contact-form select option { background: #14142a; color: var(--text); }
.contact-form textarea { resize: vertical; }
.form-tip { text-align: center; font-size: 13.5px; margin-top: 12px; min-height: 20px; }
.form-tip.ok { color: var(--cyan); }
.form-tip.err { color: var(--pink); }

/* ================= 页脚 ================= */
.footer { background: var(--bg-2); border-top: 1px solid rgba(255, 255, 255, 0.06); padding-top: 64px; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand p { color: var(--muted); font-size: 14px; margin-top: 18px; }
.footer-col h5 { font-size: 15px; margin-bottom: 18px; }
.footer-col a { display: block; color: var(--muted); font-size: 14px; margin-bottom: 12px; transition: color 0.2s; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: #6f7090;
  font-size: 13px;
}

/* ================= 回到顶部 ================= */
.back-top {
  position: fixed;
  right: 28px; bottom: 28px;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(14, 14, 28, 0.85);
  backdrop-filter: blur(10px);
  color: var(--cyan);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: 0.3s;
  z-index: 90;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--grad); color: #fff; border-color: transparent; }
.back-top svg { width: 22px; height: 22px; }

/* ================= 滚动渐入 ================= */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ================= 响应式 ================= */
@media (max-width: 1024px) {
  .cap-grid { grid-template-columns: repeat(3, 1fr); }
  .core-grid { grid-template-columns: 1fr 1fr; }
  .creator-grid { grid-template-columns: repeat(3, 1fr); }
  .wall-grid { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; gap: 28px 22px; }
  .timeline::before { display: none; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: min(300px, 82vw);
    height: calc(100vh - var(--header-h));
    background: rgba(10, 10, 22, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 34px 32px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-left: 1px solid rgba(255, 255, 255, 0.08);
  }
  .nav.open { transform: none; }
  .nav a { font-size: 17px; }
  .nav-toggle { display: block; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .about-grid, .ai-grid, .events, .cta-inner { grid-template-columns: 1fr; gap: 40px; }
  .biz-grid, .spec-grid, .case-body { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 34px 28px; }
  .case-metrics { grid-template-columns: 1fr 1fr; gap: 26px 14px; }
  .case-banner { height: 430px; }
  .case-banner-mask { background: linear-gradient(0deg, rgba(7,7,16,0.95) 0%, rgba(7,7,16,0.5) 55%, rgba(7,7,16,0.3) 100%); }
  .case-banner-text { left: 24px; right: 24px; bottom: 26px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .section { padding: 80px 0; }
}

@media (max-width: 560px) {
  .hide-mb { display: none; }
  .cap-grid, .core-grid, .creator-grid, .wall-grid, .timeline, .ai-features, .event-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .case-metrics { grid-template-columns: 1fr 1fr; padding: 24px 18px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { justify-content: flex-start; }
  .creator-grid { grid-template-columns: 1fr 1fr; }
  .brand-wall { padding: 40px 20px; }
}