/* ========== CSS Custom Properties ========== */
:root {
  --navy-deep: #0B1A2E;
  --navy-rich: #132B4C;
  --navy-mid: #1A365D;
  --blue-accent: #2563EB;
  --gold: #C9A96E;
  --gold-light: #D4BC8A;
  --gold-dark: #B08D50;
  --white: #FFFFFF;
  --off-white: #F5F5F0;
  --warm-gray: #FAFBFC;
  --text-dark: #1A2332;
  --text-body: #334155;
  --text-muted: #7A8BA8;
  --border-subtle: rgba(201,169,110,0.15);
  --border-light: rgba(255,255,255,0.08);
  --shadow-sm: 0 2px 12px rgba(11,26,46,0.06);
  --shadow-md: 0 8px 32px rgba(11,26,46,0.10);
  --shadow-lg: 0 20px 60px rgba(11,26,46,0.15);
  --transition: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-en: "Cormorant Garamond", Georgia, serif;
}

/* ========== Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans); color: var(--text-body); background: var(--off-white);
  line-height: 1.75; overflow-x: hidden;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
::selection { background: var(--gold); color: var(--navy-deep); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ========== Utility ========== */
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.container-narrow { width: 100%; max-width: 900px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 110px 0; }
.section-label {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; font-weight: 500; letter-spacing: 3px; text-transform: uppercase;
  color: var(--gold); margin-bottom: 18px;
}
.section-label::after { content: ''; width: 48px; height: 1px; background: linear-gradient(90deg, var(--gold), transparent); }
.section-title {
  font-family: var(--font-serif); font-size: clamp(32px, 4vw, 46px); font-weight: 700;
  color: var(--navy-deep); line-height: 1.3; letter-spacing: -0.02em;
}
.section-title .en { font-family: var(--font-en); display: block; font-size: 0.32em; font-weight: 300; color: var(--text-muted); letter-spacing: 0.15em; margin-top: 6px; }
.section-desc { font-size: 17px; line-height: 1.85; color: var(--text-muted); max-width: 640px; margin-top: 22px; }

/* ===== Section head (title + MORE link) ===== */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.more-link {
  display: inline-flex; align-items: center; gap: 9px; color: var(--gold-dark);
  font-weight: 500; font-size: 14px; letter-spacing: 0.05em; white-space: nowrap;
  border-bottom: 1px solid transparent; transition: all 0.3s var(--transition);
}
.more-link svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.6; transition: transform 0.3s var(--transition); }
.more-link:hover { color: var(--gold); border-bottom-color: var(--gold); }
.more-link:hover svg { transform: translateX(5px); }

/* ========== Navigation ========== */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 9999; transition: all 0.45s var(--transition); padding: 20px 0; }
.navbar.scrolled { background: rgba(11,26,46,0.97); backdrop-filter: blur(20px); padding: 14px 0; box-shadow: 0 4px 30px rgba(0,0,0,0.2); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1280px; margin: 0 auto; padding: 0 36px; }
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--white); letter-spacing: 1px;
}
.nav-logo img {
  height: 52px; width: auto; border-radius: 0; object-fit: contain;
  filter: brightness(0) invert(1);
  transition: transform 0.35s var(--transition);
}
.nav-logo:hover img { transform: scale(1.04); }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 14px; font-weight: 400; color: rgba(255,255,255,0.78); position: relative;
  transition: color 0.3s; letter-spacing: 0.03em;
}
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1.5px; background: var(--gold); transition: width 0.35s var(--transition); }
.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--gold); }
.nav-cta { border: 1.5px solid var(--gold); color: var(--gold) !important; padding: 8px 22px !important; border-radius: 3px; font-size: 13px !important; font-weight: 500; letter-spacing: 0.05em; transition: all 0.35s var(--transition); }
.nav-cta:hover { background: var(--gold); color: var(--navy-deep) !important; }
.nav-cta::after { display: none !important; }
.nav-cta.active { background: var(--gold); color: var(--navy-deep) !important; border-color: var(--gold); }

.nav-toggle { display: none; flex-direction: column; gap: 5.5px; cursor: pointer; z-index: 10001; }
.nav-toggle span { width: 24px; height: 2px; background: var(--white); transition: all 0.35s; border-radius: 1px; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5.5px, 5.5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5.5px, -5.5px); }

/* ========== HERO SECTION ========== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; background: var(--navy-deep); }
.hero-bg { position: absolute; inset: 0; z-index: 1; background: url('../pptx_assets/fintech_bg.webp?v=3') center/cover no-repeat; filter: brightness(0.72) contrast(1.05); }
.hero-overlay { position: absolute; inset: 0; z-index: 2; background: linear-gradient(135deg, rgba(11,26,46,0.88) 0%, rgba(11,26,46,0.65) 40%, rgba(19,43,76,0.5) 70%, rgba(11,26,46,0.82) 100%); }
.hero-particles { position: absolute; inset: 0; z-index: 3; overflow: hidden; opacity: 0.35; }
.particle { position: absolute; width: 2px; height: 2px; background: var(--gold); border-radius: 50%; animation: float-particle linear infinite; }
@keyframes float-particle { 0%{transform:translateY(100vh) scale(0);opacity:0} 10%{opacity:1} 90%{opacity:1} 100%{transform:translateY(-10vh) scale(1);opacity:0} }
.hero-content { position: relative; z-index: 4; text-align: center; padding: 0 24px; max-width: 900px; }
.hero-badge { display: inline-flex; align-items: center; gap: 10px; border: 1px solid rgba(201,169,110,0.35); padding: 8px 24px; border-radius: 100px; font-size: 13px; letter-spacing: 3px; text-transform: uppercase; color: var(--gold-light); backdrop-filter: blur(8px); margin-bottom: 36px; animation: fadeInUp 0.9s ease both; }
.hero-badge i { width: 8px; height: 8px; background: var(--gold); border-radius: 50%; display: inline-block; animation: pulse-dot 2s ease-in-out infinite; }

/* Hero Logo */
.hero-logo {
  width: 72px; height: 72px; border-radius: 50%;
  object-fit: contain; margin-bottom: 28px;
  filter: drop-shadow(0 4px 20px rgba(201,169,110,0.25));
  animation: fadeInUp 0.9s ease both;
}
@keyframes pulse-dot { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 { font-family: var(--font-serif); font-size: clamp(38px, 6vw, 68px); font-weight: 900; color: var(--white); line-height: 1.2; letter-spacing: 0.04em; animation: fadeInUp 1s ease 0.15s both; }
.hero h1 .line { display: block; }
.hero h1 .en-line { font-family: var(--font-en); font-size: 0.28em; font-weight: 300; letter-spacing: 0.2em; color: var(--gold); opacity: 0.85; margin-top: 14px; }
.hero-tagline { font-size: clamp(18px, 2.5vw, 24px); color: rgba(255,255,255,0.72); font-weight: 300; letter-spacing: 0.25em; margin-top: 28px; animation: fadeInUp 1s ease 0.35s both; }
.hero-divider { width: 60px; height: 2px; background: linear-gradient(90deg, transparent, var(--gold), transparent); margin: 36px auto 42px; animation: fadeInUp 1s ease 0.5s both; }
.hero-actions { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; animation: fadeInUp 1s ease 0.65s both; }
.btn-primary { display: inline-flex; align-items: center; gap: 10px; background: var(--gold); color: var(--navy-deep); padding: 15px 38px; font-size: 14px; font-weight: 600; letter-spacing: 0.08em; border-radius: 3px; border: none; cursor: pointer; transition: all 0.4s var(--transition); }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,169,110,0.35); }
.btn-outline { display: inline-flex; align-items: center; gap: 10px; background: transparent; color: var(--white); padding: 15px 38px; font-size: 14px; font-weight: 500; letter-spacing: 0.08em; border-radius: 3px; border: 1.5px solid rgba(255,255,255,0.3); cursor: pointer; transition: all 0.4s var(--transition); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.hero-scroll-hint { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); z-index: 4; display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255,255,255,0.4); font-size: 11px; letter-spacing: 2px; text-transform: uppercase; animation: fadeInUp 1s ease 1.2s both; }
.scroll-line { width: 1px; height: 44px; background: linear-gradient(to bottom, var(--gold), transparent); animation: scroll-down 1.8s ease-in-out infinite; }
@keyframes scroll-down { 0%{transform:scaleY(0);transform-origin:top} 50%{transform:scaleY(1);transform-origin:top} 51%{transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }

/* ========== HOME PREVIEW DIVIDER ========== */
.home-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--border-subtle), transparent); }

/* ========== ABOUT SECTION ========== */
.about { background: var(--white); position: relative; overflow: hidden; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-top: 56px; }
.about-text p { font-size: 17px; line-height: 1.95; color: var(--text-body); margin-bottom: 18px; }
.about-text p:first-of-type { font-size: 17px; line-height: 1.95; color: var(--text-dark); }
.about-intro { display: flex; flex-direction: row; gap: 44px; align-items: center; margin-top: 48px; }
.about-intro .about-text { flex: 1; min-width: 0; }
.about-visual { flex: 1; min-width: 0; position: relative; }
.about-visual img { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 16px 48px rgba(11,26,46,0.14); display: block; }
@media (max-width: 600px) {
  .about-intro { flex-direction: column; gap: 32px; margin-top: 36px; }
  .about-visual { flex: none; width: 100%; max-width: 560px; margin: 0 auto; }
}
.about-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.stat-card { background: var(--warm-gray); border: 1px solid var(--border-subtle); border-radius: 8px; padding: 32px 28px; text-align: center; transition: all 0.4s var(--transition); position: relative; overflow: hidden; }
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--gold), var(--gold-light)); transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--transition); }
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--gold); }
.stat-card:hover::before { transform: scaleX(1); }
.stat-number { font-family: var(--font-en); font-size: 42px; font-weight: 700; color: var(--navy-deep); line-height: 1; }
.stat-number .unit { font-size: 18px; font-weight: 400; color: var(--gold); margin-left: 3px; }
.stat-label { font-size: 14px; color: var(--text-muted); margin-top: 8px; letter-spacing: 0.02em; }

/* ========== CORE BUSINESS SECTION ========== */
.business { background: var(--warm-gray); }
.business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 60px; }
.biz-card { background: var(--white); border-radius: 12px; padding: 44px 36px; border: 1px solid var(--border-subtle); transition: all 0.5s var(--transition); position: relative; overflow: hidden; }
.biz-card::after { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg, rgba(201,169,110,0.04), transparent); opacity: 0; transition: opacity 0.5s; pointer-events: none; }
.biz-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(201,169,110,0.35); }
.biz-card:hover::after { opacity: 1; }
.biz-icon-wrap { width: 64px; height: 64px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 26px; position: relative; }
.biz-icon-wrap svg { width: 32px; height: 32px; stroke: currentColor; fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.biz-card:nth-child(1) .biz-icon-wrap { background: linear-gradient(135deg, #EFF4FF, #DBE8FF); color: var(--blue-accent); }
.biz-card:nth-child(2) .biz-icon-wrap { background: linear-gradient(135deg, #FFF8EE, #FFEFD0); color: var(--gold-dark); }
.biz-card:nth-child(3) .biz-icon-wrap { background: linear-gradient(135deg, #EFFFF5, #D5F5E3); color: #2D9D63; }
.biz-stage-num { font-family: var(--font-en); font-size: 13px; font-weight: 600; letter-spacing: 0.15em; color: var(--gold); margin-bottom: 10px; display: block; }
.biz-card h3 { font-family: var(--font-serif); font-size: 23px; font-weight: 700; color: var(--navy-deep); margin-bottom: 20px; }
.biz-list li { font-size: 15px; color: var(--text-muted); padding: 9px 0; padding-left: 22px; position: relative; border-bottom: 1px solid rgba(122,139,168,0.09); transition: all 0.3s; }
.biz-list li:last-child { border-bottom: none; }
.biz-list li::before { content: ''; position: absolute; left: 0; top: 52%; transform: translateY(-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--gold); opacity: 0.6; }
.biz-card:hover .biz-list li { color: var(--text-body); padding-left: 26px; }
.biz-card:hover .biz-list li::before { opacity: 1; width: 8px; height: 8px; }
.biz-summary { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-top: 14px; }

/* ========== 服务内容（悬停展开） ========== */
.sv-expand { display: flex; gap: 16px; margin-top: 56px; height: 420px; }
.sv-item {
  position: relative; flex: 1 1 0; min-width: 0; border-radius: 16px; overflow: hidden;
  cursor: pointer; transition: flex-grow 0.55s cubic-bezier(.4,0,.2,1), box-shadow 0.4s;
  background: #eef1f5;
  border: 1px solid rgba(0,0,0,0.06);
}
.sv-item::before { content:''; position:absolute; inset:0; background: var(--sv-accent); opacity:0.05; transition: opacity .5s; }
.sv-item.active, .sv-item:hover { flex-grow: 3.4; box-shadow: 0 24px 60px rgba(0,0,0,0.10); }
.sv-item.active::before, .sv-item:hover::before { opacity: 0.10; }

.sv-collapsed {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  gap: 14px; transition: opacity .4s; padding: 56px 18px 24px;
}
.sv-num { display: none; }
.sv-ico { width: 48px; height: 48px; border-radius: 14px; display:flex; align-items:center; justify-content:center; background: rgba(0,0,0,0.04); border:1px solid rgba(0,0,0,0.08); }
.sv-ico svg { width: 24px; height: 24px; stroke: var(--sv-accent); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.sv-vtitle { writing-mode: vertical-rl; text-orientation: upright; font-family: var(--font-serif); font-size: 28px; font-weight: 700; letter-spacing: .12em; color: #0B1A2E; }
.sv-item.active .sv-collapsed, .sv-item:hover .sv-collapsed { opacity: 0; pointer-events: none; }

.sv-expanded {
  position: absolute; inset: 0; padding: 70px 38px 35px 38px; display: flex; flex-direction: column;
  opacity: 0; transform: translateY(14px); transition: opacity .45s .12s, transform .45s .12s; pointer-events: none;
}
.sv-item.active .sv-expanded, .sv-item:hover .sv-expanded { opacity: 1; transform: translateY(0); pointer-events: auto; }
.sv-expanded h3 { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: #0B1A2E; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--sv-accent); }
.sv-expanded ul { list-style: none; padding: 0; margin: 0 0 22px; }
.sv-expanded ul li { font-size: 17px; color: rgba(0,0,0,0.72); padding: 8px 0 8px 20px; position: relative; border-bottom: 1px solid rgba(0,0,0,0.06); }
.sv-expanded ul li::before { content:''; position:absolute; left:0; top: 52%; transform: translateY(-50%); width: 7px; height: 7px; border-radius: 50%; background: var(--sv-accent); }
.sv-expanded ul li:last-child { border-bottom: none; }
.sv-more { margin-top: auto; align-self: flex-start; font-size: 14px; font-weight: 600; color: var(--sv-accent); text-decoration: none; transition: letter-spacing .3s; }
.sv-more:hover { letter-spacing: .04em; }

@media (max-width: 860px) {
  .sv-expand { flex-direction: column; height: auto; }
  .sv-item { flex: none; height: 92px; }
  .sv-item.active, .sv-item:hover { height: 360px; }
  .sv-collapsed { flex-direction: row; justify-content: flex-start; gap: 16px; padding: 0 28px; }
  .sv-vtitle { writing-mode: horizontal-tb; text-orientation: initial; font-size: 20px; letter-spacing: .04em; }
  .sv-expanded { padding: 30px 28px; }
}
/* ========== 核心业务页 · 服务内容 ========== */
.service-progress-steps { position: relative; margin-top: 50px; }
.sp-steps { display: flex; gap: 44px; justify-content: center; }
.sp-step { flex: 1; max-width: 360px; display: flex; flex-direction: column; gap: 14px; text-align: left; padding-top: 18px; border-top: 4px solid var(--step-color); }
.sp-title { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: var(--step-color); }
.sp-text { font-size: 17px; color: var(--text-body); line-height: 1.95; }
.flow-chart-wrap { margin-top: 40px; max-width: 1240px; margin-left: auto; margin-right: auto; padding: 0 20px; }
.flow-chart-wrap img { width: 100%; height: auto; max-width: 100%; }

.process-toggle { max-width: 1240px; margin: 36px auto 0; padding: 0 20px; text-align: center; }
.process-toggle-btn {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--gold-dark); font-weight: 500; font-size: 15px;
  cursor: pointer; border: 1px solid var(--gold);
  padding: 12px 32px; border-radius: 8px;
  transition: all 0.3s var(--transition);
  user-select: none; background: rgba(201,169,110,0.05);
}
.process-toggle-btn:hover { background: var(--gold); color: var(--navy-deep); }
.process-toggle-btn .process-toggle-arrow { display: inline-block; transition: transform 0.3s; font-size: 12px; }
.process-toggle-btn.open .process-toggle-arrow { transform: rotate(180deg); }

.process-detail {
  max-height: 0; overflow: hidden;
  transition: max-height 0.7s ease, opacity 0.4s ease, margin-top 0.4s ease;
  opacity: 0; margin-top: 0;
  max-width: 1240px; margin-left: auto; margin-right: auto;
}
.process-detail.open { max-height: 5000px; opacity: 1; margin-top: 24px; text-align: left; overflow: visible; }
.process-detail .process-steps { margin-top: 0; }
.process-detail .process-steps::before { left: 27px; }
.process-detail .step-marker { background: var(--white); }
.process-detail .step-content h4 { color: var(--navy-deep); }
.process-detail .step-content p { color: var(--text-muted); }
.process-detail .step-content { max-width: none; }

.wp-section { background: var(--warm-gray) !important; color: var(--text-body); }
.wp-section * { color: inherit; }
.wp-section::before { display: none !important; }
.wp-section .section-label { color: var(--gold) !important; }
.wp-section .section-title { color: var(--navy-deep) !important; }
.wp-section .section-title .en { color: var(--text-muted) !important; }
.wp-section .section-desc { color: var(--text-muted) !important; }
.wp-section .tech-card { background: var(--white); border: 1px solid var(--border-subtle); }
.wp-section .tech-card::before { background: linear-gradient(90deg, transparent, var(--gold), transparent); }
.wp-section .tech-card:hover { background: var(--white); border-color: rgba(201,169,110,0.45); box-shadow: var(--shadow-md); }
.wp-section .tech-card h3 { color: var(--navy-deep) !important; }
.wp-section .tech-card p { color: var(--text-muted) !important; }
.wp-section .tech-icon { background: rgba(201,169,110,0.1); border-color: rgba(201,169,110,0.25); }
.wp-section .tech-icon svg { stroke: var(--gold); }

@media (max-width: 768px) {
  .flow-chart-wrap { margin-top: 30px; padding: 0 10px; }
  .flow-chart-wrap svg { height: auto; }
  .process-toggle { padding: 0 10px; }
  .process-toggle-btn { padding: 10px 24px; font-size: 14px; }
}
@media (max-width: 960px) {
  .sp-steps { flex-direction: column; align-items: center; }
  .sp-step { max-width: 480px; }
}

/* ========== 底稿支持分类 ========== */
.wp-categories { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 50px; }
.wp-cat { background: var(--white); border: 1px solid var(--border-subtle); border-radius: 10px; padding: 24px 22px; transition: all 0.3s var(--transition); }
.wp-cat:hover { border-color: var(--gold); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.wp-cat-head { display: flex; align-items: center; gap: 12px; padding-bottom: 14px; border-bottom: 1px solid var(--border-subtle); margin-bottom: 14px; }
.wp-cat-tag { display: inline-block; background: var(--navy-deep); color: var(--white); font-size: 10px; font-weight: 600; letter-spacing: 0.1em; padding: 4px 10px; border-radius: 3px; }
.wp-cat h3 { font-family: var(--font-serif); font-size: 17px; font-weight: 700; color: var(--navy-deep); margin: 0; }

/* ========== 底稿深度咨询（核心业务页）· 蓝金交替·悬停切换 ========== */
.wp-sv-expand { display: flex; gap: 0; margin-top: 50px; height: 430px; border: 1px solid rgba(0,0,0,0.06); background: linear-gradient(rgba(0,0,0,0.65), rgba(0,0,0,0.65)), url('../pptx_assets/fintech_bg.webp?v=3') 0% 37.2% / cover no-repeat; }
.wp-sv-item { position: relative; flex: 1 1 0; min-width: 60px; overflow: hidden; border-right: 1px solid rgba(0,0,0,0.06); cursor: pointer; transition: flex-grow 0.55s cubic-bezier(.4,0,.2,1); }
.wp-sv-item:last-child { border-right: none; }
.wp-sv-item.active, .wp-sv-item:hover { flex-grow: 4; box-shadow: 0 4px 24px rgba(0,0,0,0.08); z-index: 2; }

/* 卡片顶部装饰金线 */
.wp-sv-item::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; z-index: 3; transition: opacity .3s; }
.wp-sv-item:nth-child(1)::before,
.wp-sv-item:nth-child(3)::before { background: linear-gradient(90deg, rgba(201,169,110,0.5), transparent); }
.wp-sv-item:nth-child(2)::before,
.wp-sv-item:nth-child(4)::before { background: linear-gradient(90deg, rgba(255,255,255,0.3), transparent); }
.wp-sv-item.active::before, .wp-sv-item:hover::before { opacity: 0; }

/* 收起态：透明背景，透出容器的连续图案；叠加蓝金色调保持交替 */
.wp-sv-collapsed { position: absolute; inset: 0; display: flex; flex-direction: row; align-items: center; justify-content: center; gap: 12px; padding: 0 10px; z-index: 1; transition: opacity .3s; }
.wp-sv-item:nth-child(1) .wp-sv-collapsed,
.wp-sv-item:nth-child(3) .wp-sv-collapsed { background: linear-gradient(180deg, rgba(11,26,46,0.55), rgba(11,26,46,0.65)); }
.wp-sv-item:nth-child(2) .wp-sv-collapsed,
.wp-sv-item:nth-child(4) .wp-sv-collapsed { background: linear-gradient(180deg, rgba(184,150,91,0.5), rgba(184,150,91,0.6)); }
.wp-sv-item.active .wp-sv-collapsed,
.wp-sv-item:hover .wp-sv-collapsed { opacity: 0; pointer-events: none; }

/* 图标 */
.wp-sv-ico { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.92); border-radius: 8px; flex-shrink: 0; }
.wp-sv-ico svg { width: 18px; height: 18px; stroke: var(--sv-accent); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* 横向标题 */
.wp-sv-vtitle { font-family: var(--font-serif); font-size: 26px; font-weight: 700; letter-spacing: .08em; color: #fff; white-space: nowrap; }

/* 展开态：白色背景 + 水平平移 */
.wp-sv-expanded { position: absolute; inset: 0; display: flex; flex-direction: column; opacity: 0; visibility: hidden; background: #f7f6f2; transform: translateX(-24px); transition: opacity .45s .1s, transform .55s cubic-bezier(.4,0,.2,1), visibility 0s .65s; }
/* 展开态顶部主题色装饰条 */
.wp-sv-expanded::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--sv-accent), rgba(0,0,0,0.02)); z-index: 1; }
/* 展开态底部浅色装饰线 */
.wp-sv-expanded::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, var(--sv-accent), transparent); opacity: 0.12; }

.wp-sv-item.active .wp-sv-expanded,
.wp-sv-item:hover .wp-sv-expanded { opacity: 1; visibility: visible; transform: translateX(0); transition: opacity .45s .12s, transform .55s cubic-bezier(.4,0,.2,1), visibility 0s 0s; }

/* 展开态标题 */
.wp-sv-expanded h3 { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: var(--navy-deep); margin: 0 0 6px; padding: 32px 34px 0; position: relative; z-index: 1; display: flex; align-items: center; gap: 12px; }
.wp-sv-h-ico { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; background: var(--sv-accent); border-radius: 8px; flex-shrink: 0; }
.wp-sv-h-ico svg { width: 20px; height: 20px; stroke: #fff; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.wp-sv-h-sub { font-family: var(--font-en); font-size: 13px; font-weight: 500; color: var(--text-muted); letter-spacing: 0.18em; text-transform: uppercase; margin-left: 4px; align-self: flex-end; padding-bottom: 4px; }
.wp-sv-expanded .sub { font-size: 11px; color: var(--text-muted); letter-spacing: 0.12em; font-weight: 500; text-transform: uppercase; padding: 0 34px; margin-bottom: 8px; position: relative; z-index: 1; }

/* 标题下装饰分隔线 */
.wp-sv-expanded .sub::after { content: ''; display: block; width: 100%; height: 2px; background: var(--sv-accent); margin-top: 8px; opacity: 0.6; }

/* 展开态列表 */
.wp-sv-expanded ul { list-style: none; padding: 0 34px; margin: 0; position: relative; z-index: 1; }
.wp-sv-expanded ul li { font-size: 17px; color: var(--text-body); padding: 8px 0 8px 26px; position: relative; border-bottom: 1px solid rgba(0,0,0,0.04); line-height: 1.85; transition: padding-left .3s, color .3s; }
.wp-sv-expanded ul li:last-child { border-bottom: none; }
/* 菱形列表标记 */
.wp-sv-expanded ul li::before { content: ''; position: absolute; left: 6px; top: 50%; transform: translateY(-50%) rotate(45deg); width: 6px; height: 6px; border: 1.5px solid var(--sv-accent); background: transparent; opacity: 0.6; transition: all .3s; }
.wp-sv-expanded ul li:hover { padding-left: 32px; color: var(--navy-deep); }
.wp-sv-expanded ul li:hover::before { background: var(--sv-accent); opacity: 1; }
.wp-cat ul { list-style: none; padding: 0; margin: 0; }
.wp-cat ul li { font-size: 13px; color: var(--text-muted); line-height: 1.7; padding: 6px 0 6px 14px; position: relative; border-bottom: 1px dashed rgba(122,139,168,0.15); }
.wp-cat ul li:last-child { border-bottom: none; }
.wp-cat ul li::before { content: ''; position: absolute; left: 0; top: 14px; width: 5px; height: 5px; border-radius: 50%; background: var(--gold); }
@media (max-width: 1024px) { .wp-categories { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .wp-categories { grid-template-columns: 1fr; } }

/* ========== 增值服务案例卡 ========== */
.wp-cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 28px; }
.wp-case-card { position: relative; background: #fff; border: 1px solid var(--border-subtle); border-radius: 12px; padding: 32px 28px 28px; transition: all 0.4s var(--transition); overflow: hidden; }
.wp-case-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--case-accent, var(--gold)); }
.wp-case-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(11,26,46,0.08); border-color: transparent; }
.wp-case-num { position: absolute; top: 20px; right: 24px; font-family: var(--font-en); font-size: 42px; font-weight: 800; line-height: 1; color: rgba(11,26,46,0.06); letter-spacing: -0.02em; pointer-events: none; }
.wp-case-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; padding-right: 60px; }
.wp-case-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.92); border: 1.5px solid var(--case-accent, var(--gold)); border-radius: 10px; flex-shrink: 0; color: var(--case-accent, var(--gold)); }
.wp-case-icon svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.wp-case-head h3 { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--navy-deep); margin: 0; }
.wp-case-card p { font-size: 15px; color: var(--text-muted); line-height: 1.9; margin: 0; }
@media (max-width: 768px) { .wp-cases-grid { grid-template-columns: 1fr; } }

/* ========== TECH EMPOWERMENT SECTION ========== */
.tech { background: var(--navy-deep); color: var(--white); position: relative; overflow: hidden; }
.tech::before { content: ''; position: absolute; top: -200px; right: -200px; width: 500px; height: 500px; background: radial-gradient(circle, rgba(201,169,110,0.07), transparent 70%); border-radius: 50%; }
.tech .section-label { color: var(--gold-light); }
.tech .section-title { color: var(--white); }
.tech .section-title .en { color: rgba(255,255,255,0.35); }
.tech .section-desc { color: rgba(255,255,255,0.55); }
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 60px; }
.tech-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 42px 32px; text-align: center; transition: all 0.5s var(--transition); position: relative; overflow: hidden; }
.tech-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--gold), transparent); opacity: 0; transition: opacity 0.5s; }
.tech-card:hover { background: rgba(255,255,255,0.07); border-color: rgba(201,169,110,0.25); transform: translateY(-6px); }
.tech-card:hover::before { opacity: 1; }
.tech-icon { width: 80px; height: 80px; margin: 0 auto 26px; border-radius: 50%; background: rgba(201,169,110,0.1); display: flex; align-items: center; justify-content: center; border: 1px solid rgba(201,169,110,0.2); }
.tech-icon svg { width: 36px; height: 36px; stroke: var(--gold); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.tech-card h3 { font-family: var(--font-serif); font-size: 21px; font-weight: 700; color: var(--white); margin-bottom: 14px; }
.tech-card p { font-size: 14.5px; color: rgba(255,255,255,0.5); line-height: 1.8; }
.tech-feature-list { text-align: left; margin-top: 18px; }
.tech-feature-list li { font-size: 13.5px; color: rgba(255,255,255,0.55); padding: 7px 0 7px 22px; position: relative; }
.tech-feature-list li::before { content: ''; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); opacity: 0.6; }

/* ========== CASES / PORTFOLIO SECTION ========== */
.cases { background: var(--white); }
.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px; margin-top: 60px; }
.case-card { background: var(--warm-gray); border-radius: 12px; overflow: hidden; border: 1px solid var(--border-subtle); transition: all 0.45s var(--transition); }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--gold); }
.case-header { padding: 28px 28px 20px; border-bottom: 1px solid var(--border-subtle); display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.case-type { display: inline-block; padding: 4px 14px; border-radius: 100px; font-size: 12px; font-weight: 500; letter-spacing: 0.03em; }
.type-wp { background: #EFF4FF; color: var(--blue-accent); }
.type-rpt { background: #FFF8EE; color: var(--gold-dark); }
.type-dd { background: #EFFFF5; color: #2D9D63; }
.case-header h4 { font-family: var(--font-serif); font-size: 18px; font-weight: 700; color: var(--navy-deep); }
.case-market { font-size: 13px; color: var(--text-muted); white-space: nowrap; font-family: var(--font-en); font-weight: 500; letter-spacing: 0.05em; }
.case-body { padding: 20px 28px 28px; }
.case-body p { font-size: 14.5px; color: var(--text-muted); line-height: 1.8; }

/* ========== PROCESS TIMELINE SECTION ========== */
.process { background: var(--warm-gray); }
.process-steps { display: flex; flex-direction: column; gap: 0; margin-top: 60px; position: relative; }
.process-steps::before { content: ''; position: absolute; left: 27px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--gold), rgba(201,169,110,0.15)); z-index: 1; }
.step-item { display: flex; gap: 32px; position: relative; padding-bottom: 48px; }
.step-item:last-child { padding-bottom: 0; }
.step-marker { flex-shrink: 0; width: 56px; height: 56px; border-radius: 50%; background: var(--white); border: 2.5px solid var(--gold); display: flex; align-items: center; justify-content: center; font-family: var(--font-en); font-size: 18px; font-weight: 700; color: var(--gold); z-index: 3; box-shadow: 0 4px 16px rgba(201,169,110,0.2); transition: all 0.4s var(--transition); position: relative; }
.step-item:hover .step-marker { background: var(--gold); color: var(--navy-deep); transform: scale(1.08); z-index: 4; }
.step-content { flex: 1; padding-top: 6px; }
.step-phase { font-size: 12px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--gold); margin-bottom: 6px; }
.step-content h4 { font-family: var(--font-serif); font-size: 21px; font-weight: 700; color: var(--navy-deep); margin-bottom: 10px; }
.step-content p { font-size: 14.5px; color: var(--text-muted); line-height: 1.85; }
.step-time { display: inline-block; margin-top: 10px; padding: 3px 14px; border-radius: 100px; font-size: 13px; font-weight: 500; color: var(--gold-dark); background: rgba(201,169,110,0.1); }

/* ========== DETAIL SERVICES SECTION ========== */
.detail-services { background: var(--navy-deep); color: var(--white); position: relative; }
.detail-services .section-label { color: var(--gold-light); }
.detail-services .section-title { color: var(--white); }
.detail-services .section-title .en { color: rgba(255,255,255,0.35); }
.detail-services .section-desc { color: rgba(255,255,255,0.5); }
.service-pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 60px; }
.pillar-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; overflow: hidden; transition: all 0.45s var(--transition); }
.pillar-card:hover { border-color: rgba(201,169,110,0.3); transform: translateY(-4px); background: rgba(255,255,255,0.05); }
.pillar-header { padding: 24px 24px 18px; border-bottom: 1px solid rgba(255,255,255,0.06); background: rgba(201,169,110,0.04); }
.pillar-header h4 { font-family: var(--font-serif); font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.pillar-badge { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; padding: 3px 10px; border-radius: 4px; background: rgba(37,99,235,0.15); color: #60A5FA; font-family: var(--font-sans); }
.pillar-body { padding: 20px 24px 24px; }
.pillar-summary { font-size: 13.5px; color: rgba(255,255,255,0.55); line-height: 1.8; }
.pillar-item { font-size: 13.5px; color: rgba(255,255,255,0.5); line-height: 1.7; padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,0.04); transition: color 0.3s; }
.pillar-item:last-child { border-bottom: none; }
.pillar-card:hover .pillar-item { color: rgba(255,255,255,0.75); }

/* ========== CLIENT LOGO WALL ========== */
.client-logos{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:22px;margin-top:44px}
.client-logos img{width:160px;height:104px;object-fit:contain;padding:18px 14px;background:#fff;border-radius:14px;border:1px solid #e8ebf1;box-shadow:0 2px 10px rgba(11,26,46,.04);opacity:.92;transition:all .35s var(--transition, ease)}
.client-logos img:hover{opacity:1;transform:scale(1.03);box-shadow:0 10px 26px rgba(11,26,46,.09)}
@media (max-width:560px){.client-logos img{width:44vw;height:88px;padding:14px 12px}}

/* ========== 合作情况 ========== */
.partners { background: var(--white); }

/* ========== 合作情况 · 悬停切换 ========== */
.co-switcher{display:flex;gap:28px;margin-top:44px;align-items:stretch}
.co-triggers{display:flex;flex-direction:column;gap:16px;width:130px;flex-shrink:0}
.co-trigger{padding:18px 16px;border-radius:14px;background:#fff;border:1px solid #e8ebf1;cursor:pointer;transition:all .35s var(--transition, ease);font-size:16px;font-weight:600;color:#6b768c;text-align:center;box-shadow:0 2px 10px rgba(11,26,46,.04)}
.co-trigger:hover,.co-trigger.active{background:#0B1A2E;color:#fff;border-color:#0B1A2E;box-shadow:0 10px 26px rgba(11,26,46,.12)}
.co-panels{flex:1;min-width:0}
.co-panel{display:none}
.co-panel.active{display:block}
.co-panel .client-logos{margin-top:0;justify-content:flex-start}
@media (max-width:560px){
  .co-switcher{flex-direction:column;gap:18px}
  .co-triggers{flex-direction:row;width:100%}
  .co-trigger{flex:1}
  .co-panel .client-logos{justify-content:center}
  .co-panel .co-partners-grid{justify-content:center}
}
.co-partners-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;align-items:stretch}
.co-partner-card{background:#fff;border:1px solid #e8ebf1;border-radius:14px;padding:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;transition:all .35s var(--transition, ease);box-shadow:0 2px 10px rgba(11,26,46,.04);aspect-ratio:1/1}
.co-partner-card:hover{transform:translateY(-5px);box-shadow:0 16px 38px rgba(11,26,46,.10);border-color:rgba(201,169,110,.45)}
.co-partner-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#0B1A2E,#16304f);display:flex;align-items:center;justify-content:center;color:#C9A96E}
.co-partner-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.co-partner-card span{font-size:13px;color:#0B1A2E;font-weight:500;letter-spacing:.02em;text-align:center}
.co-partner-logo{width:100px;height:100px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:10px;padding:8px}
.co-partner-logo img{max-width:100%;max-height:100%;object-fit:contain}
@media (max-width:900px){.co-partners-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:520px){.co-partners-grid{grid-template-columns:repeat(2,1fr)}}

/* ========== CONTACT / CTA SECTION ========== */
.contact { position: relative; background: var(--white); overflow: hidden; }
.contact-bg-pattern { position: absolute; inset: 0; opacity: 0.04; background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M54.627 0l.83.828-1.415 1.415L51.8 0h2.827zM5.373 0l-.83.828L5.96 2.243 8.2 0H5.374zM48.97 0l3.657 3.657-1.414 1.414L46.143 0h2.828zM11.03 0L7.372 3.657 8.787 5.07 13.857 0H11.03zm32.284 0L49.8 6.485 48.384 7.9l-7.9-7.9h2.83zM16.686 0L10.2 6.485 11.616 7.9l7.9-7.9h-2.83zM22.344 0L13.858 8.485 15.272 9.9l9.9-9.9h-2.829zM32 0l-3.486 3.485 1.414 1.415L32 2.828V0zM0 5.373l.828-.83 1.415 1.415L0 8.2V5.374zm0 5.656l.828-.829 1.415 1.415L0 13.86v-2.83zm0 5.657l.828-.828 1.414 1.414L0 19.515v-2.828zM0 28l.828-.828 1.414 1.414L0 31.172V28zm0 5.373L.828 32.545l1.414 1.415L0 35.8v-2.828zm0 5.656l.828-.829 1.414 1.415L0 41.456v-2.83zm0 5.657l.828-.828 1.414 1.414L0 47.113v-2.83zM60 54.627l-.828.83-1.415-1.415L60 51.8v2.827zm0-5.656l-.828.829-1.415-1.415L60 46.142v2.83zm0-5.657l-.828.828-1.414-1.414L60 40.485v2.828zM60 32l-.828.828-1.414-1.414L60 28.828V32zm0-5.373l-.828.828-1.414 1.414L60 24.2v2.827zm0-5.656l-.828.829-1.414-1.415L60 18.544v2.83zm0-5.657l-.828.828-1.414-1.414L60 12.887v2.828z' fill='%230B1A2E' fill-rule='evenodd'/%3E%3C/svg%3E"); }
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-top: 56px; position: relative; z-index: 1; }
.contact-info h3 { font-family: var(--font-serif); font-size: 32px; font-weight: 700; color: var(--navy-deep); margin-bottom: 18px; line-height: 1.35; }
.contact-info > p { font-size: 17px; color: var(--text-muted); line-height: 1.85; margin-bottom: 36px; }
.contact-detail-item { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.contact-detail-icon { width: 48px; height: 48px; border-radius: 12px; background: rgba(201,169,110,0.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-detail-icon svg { width: 22px; height: 22px; stroke: var(--gold); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.contact-detail-text h5 { font-size: 15px; font-weight: 600; color: var(--navy-deep); margin-bottom: 3px; }
.contact-detail-text p { font-size: 14px; color: var(--text-muted); }
.contact-form { background: var(--warm-gray); border: 1px solid var(--border-subtle); border-radius: 16px; padding: 44px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--navy-deep); margin-bottom: 8px; letter-spacing: 0.03em; }
.form-group input, .form-group textarea { width: 100%; padding: 14px 18px; border: 1.5px solid var(--border-subtle); border-radius: 8px; font-family: var(--font-sans); font-size: 14.5px; color: var(--text-dark); background: var(--white); outline: none; transition: all 0.35s var(--transition); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,169,110,0.1); }
.form-submit { width: 100%; padding: 16px; background: var(--navy-deep); color: var(--white); border: none; border-radius: 8px; font-size: 15px; font-weight: 600; letter-spacing: 0.08em; cursor: pointer; transition: all 0.4s var(--transition); margin-top: 6px; }
.form-submit:hover { background: var(--navy-mid); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(11,26,46,0.2); }

/* ========== INNER PAGE HERO ========== */
.page-hero { position: relative; background: var(--navy-deep); color: var(--white); padding: 190px 0 90px; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; top: -150px; right: -100px; width: 460px; height: 460px; background: radial-gradient(circle, rgba(201,169,110,0.08), transparent 70%); border-radius: 50%; }
.page-hero::after { content: ''; position: absolute; inset: 0; background: url('../pptx_assets/fintech_bg.webp?v=3') center/cover no-repeat; opacity: 0.12; }
.page-hero-inner { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 22px; letter-spacing: 0.03em; }
.breadcrumb a { color: rgba(255,255,255,0.5); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.5; }
.page-hero h1 { font-family: var(--font-serif); font-size: clamp(34px, 5vw, 52px); font-weight: 700; letter-spacing: 0.03em; }
.page-hero .sub { font-family: var(--font-en); font-size: 16px; font-weight: 300; letter-spacing: 0.2em; color: var(--gold); margin-top: 12px; }
.page-hero p { font-size: 17px; color: rgba(255,255,255,0.6); margin-top: 20px; max-width: 680px; line-height: 1.85; }

/* back to home link */
.back-home { display: inline-flex; align-items: center; gap: 8px; color: var(--gold); font-size: 14px; font-weight: 500; margin-top: 50px; transition: gap 0.3s; }
.back-home:hover { gap: 13px; }
.back-home svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.6; }

/* ========== FOOTER ========== */
.footer { background: var(--navy-deep); color: rgba(255,255,255,0.5); }
.footer-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; padding: 52px 0 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-brand .nav-logo { color: var(--white); margin-bottom: 14px; display: flex; align-items: center; gap: 12px; }
.footer-brand .nav-logo img { height: 46px; width: auto; border-radius: 0; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 13px; line-height: 1.7; max-width: 340px; color: rgba(255,255,255,0.45); }
.footer-col h5 { font-size: 13px; font-weight: 600; color: var(--white); margin-bottom: 16px; letter-spacing: 0.05em; }
.footer-col ul li { margin-bottom: 10px; font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.6; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.5); transition: color 0.3s; }
.footer-col ul li a:hover { color: var(--gold); }
.footer-bottom { padding: 18px 0; display: flex; align-items: center; justify-content: space-between; font-size: 12px; }

/* ========== SCROLL ANIMATIONS ========== */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity 0.8s var(--transition), transform 0.8s var(--transition); }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }

/* ========== RESPONSIVE ========== */
@media(max-width:1024px) {
  .about-grid { gap: 50px; }
  .business-grid { grid-template-columns: 1fr; gap: 24px; }
  .tech-grid { grid-template-columns: 1fr; gap: 24px; }
  .service-pillars { grid-template-columns: 1fr 1fr; gap: 20px; }
  .contact-inner { grid-template-columns: 1fr; gap: 50px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media(max-width:768px) {
  .section-padding { padding: 70px 0; }
  .nav-links { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(11,26,46,0.98); flex-direction: column; justify-content: center; align-items: center; gap: 28px; z-index: 10000; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 17px; color: rgba(255,255,255,0.85) !important; }
  .nav-cta { font-size: 15px !important; padding: 12px 32px !important; }
  .nav-toggle { display: flex; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: clamp(30px, 8vw, 46px); }
  .cases-grid { grid-template-columns: 1fr; }
  .service-pillars { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .process-steps::before { left: 20px; }
  .step-marker { width: 42px; height: 42px; font-size: 15px; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .contact-form { padding: 28px; }
  .page-hero { padding: 150px 0 64px; }
}

/* ========== 首页服务流程时间轴 ========== */
.stl-line { position: relative; padding-top: 20px; }
.stl-line-bg { position: absolute; top: 100px; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, #1B3D6B 0%, #1B3D6B 33%, #C9A96E 50%, #1B3D6B 66%, #1B3D6B 100%); border-radius: 2px; }
/* 时间轴右端箭头 */
.stl-line-bg::after { content: ''; position: absolute; right: -4px; top: 50%; transform: translateY(-50%); width: 0; height: 0; border-top: 10px solid transparent; border-bottom: 10px solid transparent; border-left: 14px solid #1B3D6B; }
.stl-nodes { display: grid; grid-template-columns: repeat(3, 1fr); position: relative; z-index: 1; }
.stl-node { display: flex; flex-direction: column; align-items: center; }
.stl-stage { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: var(--node-color); margin-bottom: 22px; letter-spacing: 0.02em; }
.stl-circle { width: 24px; height: 24px; border-radius: 50%; background: var(--node-color); display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(11,26,46,0.12); position: relative; }
.stl-circle::before { content: ''; position: absolute; inset: -8px; border: 2px solid var(--node-color); border-radius: 50%; opacity: 0.25; }
.stl-card { margin-top: 36px; text-align: center; padding: 0 24px; }
.stl-card h4 { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--navy-deep); margin-bottom: 14px; }
.stl-card p { font-size: 15px; color: var(--text-muted); line-height: 1.9; }
.stl-card ul { list-style: none; padding: 0; margin: 0; text-align: left; }
.stl-card ul li { font-size: 17px; color: var(--text-muted); padding: 6px 0 6px 18px; position: relative; line-height: 1.7; }
.stl-card ul li::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%) rotate(45deg); width: 6px; height: 6px; border: 1.5px solid var(--node-color); background: transparent; opacity: 0.6; }
@media (max-width: 900px) {
  .stl-nodes { grid-template-columns: 1fr; gap: 60px; }
  .stl-line-bg { display: none; }
}