/* 行业研究 · 房地产数据智能 - #020617 深蓝黑科技风 */

.ri-page {
  --ri-bg: #020617;
  --ri-grad: linear-gradient(135deg, #0ea5e9 0%, #22d3ee 45%, #4ade80 100%);
  --ri-surface: rgba(15, 23, 42, 0.55);
  min-height: 100vh;
  background: var(--ri-bg) !important;
  color: #e2e8f0;
}

.ri-wrap {
  padding-top: calc(var(--header-height) + 0.5rem);
  padding-bottom: 3.5rem;
}

.ri-hero {
  position: relative;
  padding: 3.25rem 0 3.5rem;
  margin-bottom: 0;
  overflow: hidden;
}

.ri-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(2, 6, 23, 0.3) 0%, rgba(2, 6, 23, 0.95) 100%),
    linear-gradient(90deg, rgba(8, 145, 178, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(8, 145, 178, 0.06) 1px, transparent 1px);
  background-size: 100% 100%, 28px 28px, 28px 28px;
  animation: riGridDrift 48s linear infinite;
  pointer-events: none;
}

.ri-hero::after {
  content: "";
  position: absolute;
  top: 10%;
  left: 40%;
  width: 80%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(14, 165, 233, 0.12) 0%, transparent 65%);
  pointer-events: none;
  animation: riGlowPulse 10s ease-in-out infinite;
}

@keyframes riGridDrift {
  0% { background-position: 0 0, 0 0, 0 0; }
  100% { background-position: 0 0, 28px 28px, 28px 28px; }
}

@keyframes riGlowPulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.04); }
}

.ri-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
  animation: riFadeUp 0.7s ease both;
}

.ri-hero__kicker {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #38bdf8;
  margin-bottom: 0.75rem;
}

.ri-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #f8fafc;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.ri-hero__subtitle {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: rgba(186, 230, 253, 0.88);
  max-width: 40em;
  margin: 0 0 1.25rem;
}

.ri-hero__line {
  display: block;
  width: 3.5rem;
  height: 3px;
  border-radius: 2px;
  background: var(--ri-grad);
  margin-bottom: 0;
  box-shadow: 0 0 20px rgba(14, 165, 233, 0.35);
}

.ri-hero__svg {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: min(45vw, 420px);
  height: 220px;
  color: #22d3ee;
  opacity: 0.25;
  pointer-events: none;
  z-index: 0;
}

.ri-hero__svg path.ri-hero-flow {
  stroke-dasharray: 8 6;
  animation: riFlowDash 24s linear infinite;
}

@keyframes riFlowDash {
  to { stroke-dashoffset: -140; }
}

.ri-hero--wide {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .ri-hero__svg { display: none; }
}

.ri-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--font-size-sm);
  color: #94a3b8;
  margin: 0 0 1.5rem;
}

.ri-breadcrumb a {
  color: rgba(56, 189, 248, 0.9);
}

.ri-breadcrumb a:hover {
  color: #7dd3fc;
}

.ri-breadcrumb__sep {
  opacity: 0.45;
}

.ri-section {
  padding: 2.75rem 0;
  position: relative;
  animation: riFadeUp 0.55s ease both;
}

.ri-eyebrow {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #38bdf8;
  margin-bottom: 0.4rem;
}

.ri-h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: #f1f5f9;
  margin: 0 0 0.2rem;
}

.ri-h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: #f1f5f9;
  margin: 0 0 0.5rem;
}

.ri-p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: #94a3b8;
  margin: 0;
}

.ri-p + .ri-p {
  margin-top: 0.9rem;
}

.ri-glass {
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.25);
}

.ri-glass--glow {
  box-shadow: 0 0 30px rgba(14, 165, 233, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* --- Problem 两栏 --- */
.ri-problem {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 1.5rem 2rem;
  align-items: start;
}

@media (max-width: 860px) {
  .ri-problem {
    grid-template-columns: 1fr;
  }
}

.ri-quote {
  padding: 1.5rem 1.4rem;
  border-left: 3px solid transparent;
  border-image: var(--ri-grad) 1;
  background: linear-gradient(165deg, rgba(8, 47, 73, 0.35) 0%, rgba(2, 6, 23, 0.8) 100%);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ri-quote:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(14, 165, 233, 0.15);
}

.ri-quote p {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: #e2e8f0;
  font-style: italic;
  margin: 0;
}

/* --- 核心研究 浅灰卡 --- */
.ri-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

@media (max-width: 900px) {
  .ri-pillars { grid-template-columns: 1fr; }
}

.ri-pillar {
  background: linear-gradient(180deg, rgba(203, 213, 225, 0.12) 0%, rgba(15, 23, 42, 0.65) 100%);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.2rem 1.4rem;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.ri-pillar:hover {
  border-color: rgba(56, 189, 248, 0.55);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(14, 165, 233, 0.12);
}

.ri-pillar__icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.6rem;
  color: #22d3ee;
  opacity: 0.95;
}

.ri-pillar h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #f8fafc;
  margin: 0 0 0.4rem;
}

.ri-pillar p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: #94a3b8;
  margin: 0;
}

/* --- 研究洞察 深色区 --- */
.ri-insight {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 1.5rem 2.25rem;
  padding: 2rem 1.75rem;
  background: linear-gradient(165deg, #0c1220 0%, #020617 100%);
  border: 1px solid rgba(14, 165, 233, 0.12);
  border-radius: var(--radius-xl);
  box-shadow: inset 0 0 80px rgba(14, 165, 233, 0.04);
}

@media (max-width: 800px) {
  .ri-insight { grid-template-columns: 1fr; }
}

.ri-insight-visual {
  position: relative;
  margin: 0;
  min-height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #030712;
  border: 1px solid rgba(34, 211, 238, 0.12);
}

.ri-insight-visual img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 200px;
  object-fit: cover;
}

.ri-bullets {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.ri-bullets article {
  padding: 0.25rem 0 0.25rem 0.9rem;
  border-left: 2px solid;
  border-image: var(--ri-grad) 1;
}

.ri-bullets h4 {
  font-size: var(--font-size-sm);
  color: #f1f5f9;
  margin: 0 0 0.25rem;
  font-weight: 600;
}

.ri-bullets p {
  font-size: 0.8125rem;
  color: #94a3b8;
  line-height: 1.6;
  margin: 0;
}

/* --- 方法论 高级块 --- */
.ri-method {
  padding: 2.25rem 1.9rem 2.1rem;
  position: relative;
  overflow: hidden;
}

.ri-method::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ri-grad);
  opacity: 0.7;
  box-shadow: 0 0 16px rgba(14, 165, 233, 0.5);
}

.ri-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
  margin-top: 1.25rem;
}

.ri-chip {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: #c4f1f9;
  background: rgba(8, 47, 73, 0.45);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 999px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.ri-chip:hover {
  background: rgba(8, 145, 178, 0.25);
  border-color: rgba(34, 211, 238, 0.5);
  transform: translateY(-1px);
}

/* --- 案例 --- */
.ri-case {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.75rem 2rem;
  align-items: center;
}

.ri-case--padded {
  padding: 2.1rem 1.9rem 2.15rem;
}

@media (max-width: 860px) {
  .ri-case { grid-template-columns: 1fr; }
  .ri-case--padded { padding: 1.5rem 1.25rem; }
}

.ri-case__tags {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  color: #22d3ee;
  background: rgba(8, 47, 73, 0.5);
  border: 1px solid rgba(34, 211, 238, 0.3);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  margin-top: 0.6rem;
}

/* 案例研究右侧：用户提供的横幅图 */
.ri-case__visual {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(56, 189, 248, 0.18);
  overflow: hidden;
  background: #0a1628;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.ri-case__visual--photo {
  margin: 0;
  min-height: 200px;
  aspect-ratio: 16 / 9;
}

.ri-case__photo {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  object-position: center;
}

@media (max-width: 860px) {
  .ri-case__visual--photo {
    aspect-ratio: 16 / 10;
    min-height: 180px;
  }
}

.ri-disclaimer {
  font-size: 0.7rem;
  line-height: 1.6;
  color: #64748b;
  text-align: center;
  max-width: 36rem;
  margin: 0 auto 0;
  padding: 0 0.5rem 2.5rem;
}

/* --- 对比表 --- */
.ri-compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(30, 41, 59, 0.9);
}

.ri-compare th,
.ri-compare td {
  padding: 0.9rem 1.1rem;
  text-align: left;
  border-bottom: 1px solid rgba(30, 41, 59, 0.85);
}

.ri-compare thead th {
  background: #0a0f1a;
  color: #94a3b8;
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ri-compare tbody tr {
  background: #020617;
  transition: background 0.2s;
}

.ri-compare tbody tr:hover {
  background: #0a101c;
}

.ri-compare__highlight {
  color: #7dd3fc;
  background: linear-gradient(90deg, rgba(8, 47, 73, 0.35) 0%, rgba(2, 6, 23, 0) 100%);
  border-left: 2px solid #22d3ee;
}

.ri-compare th.ri-compare__col-h {
  color: #38bdf8;
  background: rgba(8, 47, 73, 0.25);
}

@keyframes riFadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ri-hero::before,
  .ri-hero::after,
  .ri-hero__svg path.ri-hero-flow,
  .ri-section {
    animation: none;
  }
}