/* ========= PROBLEM ========= */
.problem-title {
  font-size: clamp(22px, 3.8vw, 28px);
  font-weight: 600; color: rgba(30,30,30,0.9);
  line-height: 1.45; letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.problem-sub {
  font-size: 14px; color: var(--text-muted);
  font-weight: 400; margin-bottom: 40px;
  letter-spacing: 0.04em;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 100%;
  margin-bottom: 32px;
}
.problem-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 16px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  transition: all 0.2s;
  opacity: 0;
}
.problem-item:hover {
  background: rgba(255,255,255,0.85);
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
  transform: translateY(-1px);
}
.problem-emoji {
  font-size: 18px; flex-shrink: 0; line-height: 1.4;
}
.problem-item-text {
  font-size: 13px; color: var(--text-body); line-height: 1.6;
}

.problem-insight {
  padding: 24px 28px;
  background: rgba(255,255,255,0.8);
  border-radius: 12px;
  border-left: 3px solid var(--water-line);
  max-width: 100%;
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
}
.problem-insight p {
  font-size: 14px; font-weight: 400; color: rgba(30,30,30,0.72);
  line-height: 1.8;
  margin-bottom: 2px;
}
.problem-insight p:last-child {
  margin-bottom: 0;
}
.problem-insight strong { color: rgba(25,25,25,0.9); font-weight: 600; }

@media (max-width: 640px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .problem-item { padding: 12px 14px; }
}

/* ========= CHAT DEMO ========= */
.chat-section {
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.03);
}

.chat-header {
  background: rgba(245,242,237,0.8);
  padding: 20px 24px;
  display: flex; align-items: center; gap: 14px;
  border-bottom: 1px solid var(--card-border);
}
.chat-avatar {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--water-line), rgba(59,130,246,0.3));
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.chat-name { font-size: 15px; font-weight: 500; color: var(--text-primary); letter-spacing: 0.03em; }
.chat-status { font-size: 11px; color: var(--text-body); }
.chat-status::before {
  content: ''; display: inline-block; width: 6px; height: 6px;
  background: var(--accent-green); border-radius: 50%; margin-right: 4px;
}

.chat-body { padding: 24px; min-height: 400px; }

.chat-time-wrap { text-align: center; margin-bottom: 20px; }
.chat-time {
  font-size: 11px; color: var(--text-body);
  padding: 4px 12px;
  background: rgba(245,242,237,0.7); border-radius: 8px;
  display: inline-block; letter-spacing: 0.05em; font-weight: 500;
}

.msg { display: flex; margin-bottom: 20px; opacity: 0; transform: translateY(10px); transition: all 0.5s ease-out; }
.msg.visible { opacity: 1; transform: translateY(0); }
.msg-user { justify-content: flex-end; }
.msg-agent { justify-content: flex-start; }

.msg-bubble {
  max-width: 80%; padding: 16px 20px; border-radius: 14px;
  font-size: 14px; line-height: 1.85;
}
.msg-user .msg-bubble {
  background: rgba(85,125,155,0.88); color: rgba(255,255,255,0.95);
  border-bottom-right-radius: 4px;
}
.msg-agent .msg-bubble {
  background: rgba(250,248,245,0.92); color: rgba(50,50,50,0.78);
  border-bottom-left-radius: 4px;
}

.msg-bubble .highlight { color: rgba(59,130,246,0.85); font-weight: 600; }
.msg-bubble .green { color: rgba(22,163,74,0.85); font-weight: 600; }
.msg-bubble .orange { color: rgba(234,88,12,0.85); font-weight: 600; }
.msg-bubble .teal { color: rgba(20,184,166,0.85); font-weight: 600; }

.msg-bubble .mode-badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 12px; font-weight: 700;
}
.mode-b { background: rgba(234,88,12,0.15); color: var(--accent-warm); }

.msg-label {
  font-size: 10px; font-weight: 500; color: var(--text-body);
  margin-bottom: 4px; letter-spacing: 0.08em;
}

.chat-insight {
  margin: 24px 0 0;
  padding: 18px 22px;
  background: rgba(255,255,255,0.8);
  border-radius: 10px;
  border-left: 3px solid var(--water-line-strong);
  box-shadow: 0 1px 8px rgba(0,0,0,0.02);
}
.chat-insight-title {
  font-size: 12px; font-weight: 600;
  color: var(--text-primary); letter-spacing: 0.06em; margin-bottom: 10px;
}
.chat-insight-text { font-size: 13px; color: var(--text-body); line-height: 1.9; }

@media (max-width: 640px) {
  .chat-body { padding: 16px; }
  .msg-bubble { max-width: 90%; padding: 14px 16px; }
}

/* ========= VALUES PYRAMID ========= */
.values-pyramid {
  max-width: 560px; margin: 0 auto;
}

.value-tier {
  padding: 28px 24px; border-radius: 12px;
  margin-bottom: 12px; text-align: center;
  position: relative;
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--card-border);
  box-shadow: 0 1px 10px rgba(0,0,0,0.03);
  transition: all 0.3s;
  opacity: 0;
}
.value-tier:hover {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 2px 20px rgba(0,0,0,0.05);
  transform: translateY(-1px);
}

.value-tier-label {
  font-size: 10px; font-weight: 600; letter-spacing: 0.18em;
  margin-bottom: 10px; color: var(--text-body);
  text-transform: uppercase;
}
.value-tier-title {
  font-size: 20px; font-weight: 600; margin-bottom: 6px;
  color: rgba(30,30,30,0.9); letter-spacing: 0.02em;
}
.value-tier-desc {
  font-size: 13px; color: var(--text-body); font-weight: 400;
  line-height: 1.6;
}

.value-tier-items {
  display: flex; justify-content: center; gap: 12px; margin-top: 12px; flex-wrap: wrap;
}
.value-tier-item {
  font-size: 13px; padding: 6px 14px; border-radius: 8px;
  background: rgba(255,255,255,0.7);
  color: rgba(45,45,45,0.75); font-weight: 500;
  border: 1px solid rgba(120,160,190,0.08);
}

.value-arrow {
  text-align: center; color: rgba(100,140,170,0.4); font-size: 16px;
  margin: 4px 0;
}

@media (max-width: 640px) {
  .value-arrow { display: none; }
  .value-tier-items { flex-direction: column; gap: 8px; }
  .value-tier { padding: 20px 16px; }
}

/* ========= EMOTIONAL VALUE ========= */
.emotion-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.emotion-card {
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s;
  box-shadow: 0 1px 10px rgba(0,0,0,0.03);
  opacity: 0;
}
.emotion-card:hover {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 2px 20px rgba(0,0,0,0.05);
  transform: translateY(-2px);
}

.emotion-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.emotion-title {
  font-size: 18px;
  font-weight: 600;
  color: rgba(30,30,30,0.9);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}

.emotion-desc {
  font-size: 13px;
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.6;
}

.emotion-example {
  background: rgba(255,255,255,0.7);
  border-radius: 8px;
  padding: 14px 16px;
  text-align: left;
}

.emotion-example-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 6px;
}

.emotion-example p {
  font-size: 12px;
  color: var(--text-body);
  line-height: 1.7;
  font-style: italic;
}

.emotion-compare-old {
  color: rgba(120,120,120,0.5);
  text-decoration: line-through;
  margin-bottom: 4px;
}

.emotion-compare-new {
  color: rgba(22,163,74,0.85);
  font-weight: 600;
  font-style: normal;
}

@media (max-width: 700px) {
  .emotion-grid { grid-template-columns: 1fr; gap: 12px; }
  .emotion-card { padding: 20px 16px; }
}

/* ========= TEAM ========= */
.team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .team-grid { grid-template-columns: 1fr; } }

.team-card {
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--card-border);
  border-radius: 14px; overflow: hidden;
  transition: all 0.3s;
  box-shadow: 0 1px 8px rgba(0,0,0,0.02);
  opacity: 0;
}
.team-card:hover {
  background: rgba(255,255,255,0.9);
  box-shadow: var(--card-shadow);
}

.team-card-header {
  padding: 18px 20px 12px;
  display: flex; align-items: center; gap: 14px;
  border-bottom: 1px solid rgba(245,242,237,0.6);
}
.team-card-avatar {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}
.team-card-name { font-size: 16px; font-weight: 500; color: var(--text-primary); letter-spacing: 0.03em; }
.team-card-role { font-size: 11px; color: var(--text-body); }
.team-card-tagline {
  font-size: 13px; font-style: italic; color: var(--text-body);
  padding: 12px 20px;
  background: rgba(255,255,255,0.6);
  border-left: 3px solid var(--water-line); margin: 10px 0;
  line-height: 1.7;
}
.team-card-body { padding: 0 20px 18px; }
.team-card-skills { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.team-skill {
  font-size: 11px; font-weight: 500; padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255,255,255,0.7);
  color: rgba(45,45,45,0.7);
  border: 1px solid rgba(120,160,190,0.1);
}

.team-card-yy .team-card-avatar { background: linear-gradient(135deg, rgba(59,130,246,0.3), rgba(59,130,246,0.15)); }
.team-card-gj .team-card-avatar { background: linear-gradient(135deg, rgba(52,211,153,0.3), rgba(52,211,153,0.15)); }
.team-card-js .team-card-avatar { background: linear-gradient(135deg, rgba(249,115,22,0.3), rgba(249,115,22,0.15)); }
.team-card-jr .team-card-avatar { background: linear-gradient(135deg, rgba(167,139,250,0.3), rgba(167,139,250,0.15)); }

/* ========= FLYWHEEL ========= */
.flywheel-container {
  max-width: 720px;
  margin: 0 auto;
}

.flywheel-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  padding: 24px 16px;
  background: rgba(255,255,255,0.25);
  border-radius: 16px;
  border: 1px solid rgba(120,160,190,0.06);
}

.flywheel-svg {
  width: 100%;
  max-width: 640px;
  height: auto;
}

/* SVG 回流路径流动动画 */
.flywheel-path {
  stroke-dasharray: 6 5;
  animation: flywheel-flow 30s linear infinite;
}

@keyframes flywheel-flow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -110; }
}

.flywheel-node-svg {
  cursor: default;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.flywheel-node-svg:hover {
  transform: scale(1.05);
}

.flywheel-insight {
  padding: 20px 24px;
  background: rgba(255,255,255,0.7);
  border-radius: 10px;
  border-left: 3px solid var(--water-line-strong);
  margin-bottom: 24px;
}

.flywheel-insight p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
}

.flywheel-phases {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: nowrap;
}

.flywheel-phase {
  flex: 1;
  text-align: center;
  padding: 16px 16px;
  background: rgba(255,255,255,0.6);
  border-radius: 10px;
  border: 1px solid var(--card-border);
  min-width: 0;
}

.flywheel-phase-num {
  font-size: 13px;
  font-weight: 600;
  color: rgba(80,120,150,0.85);
  margin-bottom: 4px;
}

.flywheel-phase-text {
  font-size: 12px;
  color: var(--text-body);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .flywheel-svg { max-width: 100%; }
  .flywheel-phases { flex-direction: column; gap: 12px; }
  .flywheel-phase { min-width: 100%; }
}

/* ========= RHYTHM ========= */
.rhythm-timeline {
  position: relative; padding-left: 36px;
}
.rhythm-timeline::before {
  content: ''; position: absolute; left: 9px; top: 0; bottom: 0;
  width: 2px; background: rgba(100,140,170,0.2);
  border-radius: 1px;
}

.rhythm-block { margin-bottom: 40px; }
.rhythm-phase {
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em;
  margin-bottom: 16px; color: rgba(35,35,35,0.8);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(120,160,190,0.08);
}

.rhythm-items { display: flex; flex-direction: column; gap: 10px; }
.rhythm-item {
  display: flex; align-items: flex-start; gap: 14px;
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--card-border);
  border-radius: 10px; padding: 16px 18px;
  position: relative;
  box-shadow: 0 1px 6px rgba(0,0,0,0.02);
  opacity: 0;
}
.rhythm-item::before {
  content: ''; position: absolute; left: -32px; top: 20px;
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(100,140,170,0.5); border: 2.5px solid var(--warm-white);
  box-shadow: 0 0 0 2px rgba(100,140,170,0.1);
}
.rhythm-time {
  font-size: 12px; font-weight: 600; color: rgba(100,140,170,0.7);
  min-width: 55px; flex-shrink: 0;
  letter-spacing: 0.05em;
  padding-top: 2px;
}
.rhythm-content { font-size: 13px; line-height: 1.85; color: var(--text-body); }
.rhythm-content strong { color: rgba(30,30,30,0.85); font-weight: 600; }

/* ========= COMPARE ========= */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 700px) { .compare-grid { grid-template-columns: 1fr; } }

.compare-col {
  border-radius: 14px; overflow: hidden;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.6);
  box-shadow: 0 1px 10px rgba(0,0,0,0.03);
  opacity: 0;
}
.compare-col-header {
  padding: 16px 20px; text-align: center;
  font-size: 13px; font-weight: 600; letter-spacing: 0.12em;
}
.compare-old .compare-col-header {
  background: rgba(240,236,230,0.7); color: var(--text-body);
  border-bottom: 1px solid rgba(120,160,190,0.06);
}
.compare-new .compare-col-header {
  background: rgba(100,140,170,0.75); color: rgba(255,255,255,0.95);
}

.compare-row {
  padding: 14px 20px;
  font-size: 13px; line-height: 1.8;
  border-bottom: 1px solid rgba(120,160,190,0.05);
}
.compare-old .compare-row {
  background: rgba(255,255,255,0.3);
  color: rgba(60,60,60,0.55);
}
.compare-new .compare-row {
  background: rgba(255,255,255,0.7);
  color: rgba(45,45,45,0.75);
}
.compare-new .compare-row strong { color: rgba(25,25,25,0.88); font-weight: 600; }
.compare-old .compare-row:last-child,
.compare-new .compare-row:last-child {
  border-bottom: none;
}

/* ========= DATA ========= */
.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.data-card {
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s;
  box-shadow: 0 1px 10px rgba(0,0,0,0.03);
  opacity: 0;
}
.data-card:hover {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 2px 20px rgba(0,0,0,0.05);
  transform: translateY(-1px);
}

.data-card-icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.data-card-title {
  font-size: 16px;
  font-weight: 600;
  color: rgba(30,30,30,0.9);
  margin-bottom: 6px;
}

.data-card-desc {
  font-size: 13px;
  color: var(--text-body);
  line-height: 1.6;
}

@media (max-width: 640px) {
  .data-grid { grid-template-columns: 1fr; gap: 12px; }
}

.tech-stack {
  text-align: center;
  padding: 24px;
  background: rgba(255,255,255,0.6);
  border-radius: 12px;
  border: 1px solid var(--card-border);
}

.tech-stack-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.tech-tags {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tech-tag {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(255,255,255,0.7);
  color: var(--text-body);
  border: 1px solid rgba(120,160,190,0.1);
  font-weight: 500;
}

/* ========= CONCLUSION ========= */
.conclusion-box {
  text-align: center;
  padding: 60px 24px;
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  color: var(--text-body);
  position: relative; overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.03);
  opacity: 0;
}
.conclusion-box::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 60%, var(--water-glow) 0%, transparent 50%),
              radial-gradient(circle at 70% 30%, var(--glow-warm) 0%, transparent 40%);
}
.conclusion-inner { position: relative; z-index: 1; }

.conclusion-logo { font-size: 40px; margin-bottom: 16px; }
.conclusion-title {
  font-size: clamp(20px, 3.5vw, 28px);
  font-weight: 500; margin-bottom: 16px;
  letter-spacing: 0.03em; color: var(--text-primary);
}
.conclusion-text {
  font-size: 14px; color: var(--text-body);
  max-width: 520px; margin: 0 auto 32px; line-height: 2;
  font-weight: 400;
}

.conclusion-cta {
  display: flex; justify-content: center; gap: 14px; flex-wrap: wrap;
}
.cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 10px;
  font-size: 13px; font-weight: 600;
  text-decoration: none; transition: all 0.2s;
  border: 1px solid var(--card-border);
  letter-spacing: 0.06em;
}
.cta-btn.primary {
  background: rgba(90,130,160,0.85); color: rgba(255,255,255,0.95);
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(90,130,160,0.2);
}
.cta-btn.primary:hover { background: rgba(80,120,150,0.95); box-shadow: 0 3px 16px rgba(90,130,160,0.3); }
.cta-btn.secondary {
  background: transparent; color: var(--text-body);
}
.cta-btn.secondary:hover { background: rgba(245,242,237,0.6); }