/* ===== IKB Design Tokens ===== */
:root {
  --ikb: #002FA7;
  --ikb-deep: #001B63;
  --ikb-soft: #1C49C0;
  --ikb-ghost: rgba(0, 47, 167, 0.06);
  --ikb-line: rgba(0, 47, 167, 0.12);
  --accent: #FFA940;
  --accent-soft: #FFB964;
  --text-1: #0A1A3F;
  --text-2: #4A5470;
  --text-3: #7B849E;
  --pain: #D04B4B;
  --pain-soft: #F06B6B;
  --bg: linear-gradient(180deg, #FAFBFD 0%, #EEF2FA 100%);
  --card: #FFFFFF;

  --fs-display: 56px;
  --fs-h2: 38px;
  --fs-h3: 22px;
  --fs-h4: 17px;
  --fs-body: 14px;
  --fs-small: 12.5px;
  --fs-kicker: 13px;

  --pad-x: 48px;
  --pad-y: 52px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  font-family: "PingFang SC", -apple-system, system-ui, sans-serif;
  background: #E5E9F2;
  color: var(--text-1);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
.poster {
  width: 1080px;
  margin: 40px auto;
  background: var(--bg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

/* ===== Section head ===== */
.sec-head { padding: var(--pad-y) var(--pad-x) 26px; text-align: center; }


.sec-title {
  font-size: var(--fs-h2); font-weight: 800;
  margin-bottom: 8px; letter-spacing: -0.5px;
}
.sec-sub { font-size: 16px; color: var(--text-2); max-width: 820px; margin: 0 auto; }

/* ===== Block 01 · Hero ===== */
.hero {
  padding: 44px var(--pad-x) 36px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; width: 640px; height: 640px;
  top: -220px; right: -240px;
  background: radial-gradient(circle, rgba(0,47,167,0.12), transparent 65%);
  border-radius: 50%;
}
.hero::after {
  content: ""; position: absolute; width: 440px; height: 440px;
  bottom: -200px; left: -160px;
  background: radial-gradient(circle, rgba(28,73,192,0.08), transparent 65%);
  border-radius: 50%;
}
.hero-body {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 48px;
  align-items: center;
}
.hero-text { min-width: 0; }

/* ===== Hero 右侧概念图(拟态玻璃 · 适度圆角) ===== */
.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}
.hv-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 14px;
}

.brand-chip {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; background: var(--ikb-ghost); color: var(--ikb);
  font-size: 14px; font-weight: 600; border-radius: 999px;
  margin-bottom: 20px; letter-spacing: 1.5px;
}
.brand-chip::before {
  content: ""; width: 7px; height: 7px;
  background: var(--ikb); border-radius: 50%;
  box-shadow: 0 0 10px var(--ikb);
}
.h1 {
  font-size: var(--fs-display); font-weight: 800;
  letter-spacing: -1.5px; line-height: 1.12; margin-bottom: 16px;
  background: linear-gradient(135deg, var(--ikb-deep) 0%, var(--ikb) 55%, var(--ikb-soft) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.h1-sub {
  font-size: 18px; color: var(--text-2);
  line-height: 1.6; margin-bottom: 22px; max-width: 880px;
}
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.chip {
  padding: 9px 18px; background: #fff;
  border: 1px solid var(--ikb-line); border-radius: 10px;
  font-size: 14px; color: var(--ikb); font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip::before { content: "✦"; color: var(--accent); font-size: 12px; }
.audience {
  display: flex; gap: 20px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--text-3); letter-spacing: 0.5px;
}
.audience span::before { content: "▸ "; color: var(--ikb); }

/* ===== Block 02 · 业务 4 特征(icon 卡) ===== */
.features { padding: 0 var(--pad-x); }
.feat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.feat-card {
  background: #fff; border: 1px solid var(--ikb-line);
  border-radius: 16px; padding: 22px 20px;
  position: relative; overflow: hidden;
}
.feat-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: linear-gradient(180deg, var(--ikb), var(--ikb-soft));
}
.feat-icon {
  width: 44px; height: 44px;
  background: var(--ikb-ghost); color: var(--ikb);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.feat-icon svg { width: 24px; height: 24px; }
.feat-card h4 {
  font-size: 17px; font-weight: 700; color: var(--text-1);
  margin-bottom: 6px;
}
.feat-card p {
  font-size: 12.5px; color: var(--text-2); line-height: 1.6;
}

/* ===== Block 03 · 痛点合并(传统人工 + 云端 AI) ===== */
.pains { padding: 0 var(--pad-x); }
.pain-split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.pain-col {
  background: #fff; border-radius: 18px;
  border: 1px solid var(--ikb-line);
  padding: 24px 24px 22px;
  position: relative;
  display: flex; flex-direction: column;
}
.pain-col.a { border-top: 3px solid var(--pain); }
.pain-col.b {
  border-top: 3px solid var(--accent);
}
.pain-head {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--ikb-line);
}
.pain-tag {
  display: inline-block;
  font-size: 11px; font-weight: 800; letter-spacing: 1.5px;
  padding: 4px 10px; border-radius: 6px;
}
.pain-tag.a { color: var(--pain); background: rgba(208,75,75,0.08); }
.pain-tag.b { color: #8C4A00; background: rgba(255,169,64,0.18); }
.pain-col h3 {
  font-size: 18px; font-weight: 800; color: var(--text-1);
  letter-spacing: 0;
}
.pain-list {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px;
  flex: 1;
}
.pain-col.b .pain-list {
  grid-template-columns: 1fr;
}
.pain-item {
  background: #FAFBFD; border-radius: 10px;
  padding: 12px 14px;
  border: 1px solid rgba(0,47,167,0.04);
}
.pain-col.b .pain-item {
  padding: 14px 16px;
  position: relative;
}
.pain-item-num {
  display: inline-block;
  font-size: 10px; font-weight: 800; letter-spacing: 1.2px;
  color: #8C4A00;
  background: rgba(255,169,64,0.18);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 6px;
}
.pain-item h5 {
  font-size: 13.5px; font-weight: 700; margin-bottom: 4px;
  color: var(--text-1);
}
.pain-item p {
  font-size: 12px; color: var(--text-2); line-height: 1.55;
}

/* 结论 · 重量级 banner */
.pain-conclusion {
  margin: 20px var(--pad-x) 0;
  padding: 36px 44px;
  background:
    linear-gradient(135deg, #001B63 0%, #002FA7 55%, #1C49C0 100%);
  border-radius: 20px;
  color: #fff;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 32px;
  align-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 47, 167, 0.28);
}
.pain-conclusion::before {
  content: "";
  position: absolute;
  right: -120px; top: -120px;
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(255,169,64,0.25), transparent 65%);
  border-radius: 50%;
  pointer-events: none;
}
.pain-conclusion::after {
  content: "";
  position: absolute;
  left: -80px; bottom: -80px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(28,73,192,0.6), transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}
.pc-label {
  font-size: 13px; font-weight: 800; letter-spacing: 4px;
  color: var(--accent);
  font-family: "SF Pro Display", -apple-system, sans-serif;
  padding: 8px 14px;
  background: rgba(255,169,64,0.14);
  border: 1px solid rgba(255,169,64,0.4);
  border-radius: 8px;
  position: relative; z-index: 1;
}
.pc-main {
  position: relative; z-index: 1;
}
.pc-title {
  font-size: 30px; font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
  line-height: 1.2;
  margin-bottom: 8px;
}
.pc-desc {
  font-size: 14.5px;
  color: rgba(255,255,255,0.82);
  line-height: 1.6;
  font-weight: 500;
}
.pc-icon {
  font-size: 56px;
  color: var(--accent);
  text-shadow: 0 0 30px rgba(255,169,64,0.6);
  position: relative; z-index: 1;
  line-height: 1;
}