/* =================== RESET & VARIABLES =================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Skip link */
.skip-link {
  position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
  background: var(--blue); color: #fff;
  padding: 12px 24px; border-radius: 0 0 8px 8px;
  font-size: 1.6rem; font-weight: 700; z-index: 9999;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

:root {
  --blue:        #0F62FE;
  --blue-dark:   #0A4FCC;
  --blue-light:  #4D9FFF;
  --blue-pale:   #EBF2FF;
  --cyan:        #00D4FF;
  --cyan-glow:   rgba(0,212,255,0.3);
  --yellow:      #FDD13C;
  --yellow-dark: #F5B800;
  --green:       #00E676;
  
  --grad-hero:   linear-gradient(135deg, #0F62FE 0%, #00D4FF 50%, #0F62FE 100%);
  --grad-blue:   linear-gradient(135deg, #0F62FE 0%, #0084C7 100%);
  --grad-card:   linear-gradient(135deg, #F8FAFF 0%, #FFFFFF 100%);
  --grad-dark:   linear-gradient(135deg, #0A1628 0%, #1A2A4A 100%);

  --bg:          #FFFFFF;
  --bg-alt:      #F8FAFC;
  --bg-card:     #FFFFFF;
  --border:      #E2E8F0;
  --border-blue: rgba(15,98,254,0.25);
  --border-glow: rgba(0,212,255,0.4);

  --text:        #1A1A2E;
  --text-2:      #2D3748;
  --text-dim:    #4A5568;
  --text-muted:  #718096;

  --r-sm:   10px;
  --r-md:   16px;
  --r-lg:   24px;
  --r-xl:   32px;
  --r-full: 9999px;

  --font: "Noto Sans TC", -apple-system, BlinkMacSystemFont, sans-serif;
  --max-w: 1200px;
  --py:    clamp(80px, 8vw, 120px);
}

html { scroll-behavior: smooth; font-size: 62.5%; }
/* 固定顶栏高度，锚点跳转时不被遮挡 */
[id="hero"],
[id="platforms"],
[id="geo-intro"],
[id="ai-trust-model"],
[id="trust-platform"],
[id="trust-funnel"],
[id="evidence-chain"],
[id="process"],
[id="cases"],
[id="roadmap"],
[id="why"],
[id="services"],
[id="faq"],
[id="cta"] {
  scroll-margin-top: 88px;
}
body {
  font-family: var(--font);
  font-size: 1.75rem;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1,h2,h3,h4 { line-height: 1.2; font-weight: 800; }
h1 { font-size: clamp(5.5rem, 7.8vw+1.3rem, 9.4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(3.9rem, 5.85vw+0.65rem, 6.2rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(2.6rem, 3.64vw+0.26rem, 3.4rem); }
p  { line-height: 1.85; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 clamp(24px, 4vw, 56px); }
.section    { padding: var(--py) 0; }

/* =================== GRADIENT TEXT =================== */
.g-blue   { 
  background: linear-gradient(135deg, #0F62FE 0%, #00D4FF 50%, #0F62FE 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 200% auto;
  animation: grad-shine 4s ease-in-out infinite;
}
.g-yellow { 
  background: linear-gradient(135deg, #FDD13C 0%, #F5B800 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; 
}

@keyframes grad-shine {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 200% center; }
}

/* =================== PILL / BADGE =================== */
.pill {
  display: inline-flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, rgba(15,98,254,0.08) 0%, rgba(0,212,255,0.12) 100%);
  border: 1px solid rgba(15,98,254,0.25);
  color: var(--blue);
  font-size: 1.8rem; font-weight: 700; letter-spacing: 0.1em;
  padding: 8px 20px; border-radius: var(--r-full);
  margin-bottom: 24px;
  transition: all 0.3s ease;
}
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

/* =================== BUTTONS =================== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 1.7rem; font-weight: 700;
  padding: 16px 36px; border-radius: var(--r-full);
  cursor: pointer; border: none; white-space: nowrap;
  transition: all 0.35s ease;
  font-family: var(--font);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}
.btn:hover::before { left: 100%; }

.btn--primary {
  background: linear-gradient(135deg, #0F62FE 0%, #0084C7 100%);
  color: #fff;
  box-shadow: 0 6px 24px rgba(15,98,254,0.35), 0 0 0 0 rgba(15,98,254,0.2);
}
.btn--primary:hover {
  background: linear-gradient(135deg, #0A4FCC 0%, #0F62FE 100%);
  box-shadow: 0 8px 32px rgba(15,98,254,0.45), 0 0 0 4px rgba(15,98,254,0.1);
  transform: translateY(-3px);
}
.btn--nav {
  padding-top: 9px;
  padding-bottom: 9px;
  font-size: 1.4rem;
}
.btn--outline {
  background: transparent;
  color: var(--blue);
  border: 2px solid var(--blue);
}
.btn--outline:hover {
  background: var(--blue-pale);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(15,98,254,0.15);
}
.btn--lg { padding: 16px 48px; font-size: 1.5rem; }

/* =================== SECTION HEADER =================== */
.sec-head { margin-bottom: clamp(48px, 6vw, 80px); }
.sec-head--c { text-align: center; }
.sec-head .sub {
  margin-top: 20px;
  font-size: 1.9rem;
  color: var(--text-dim);
  max-width: 720px;
  line-height: 1.85;
}
.sec-head--c .sub { margin-left: auto; margin-right: auto; }

/* =================== HEADER =================== */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all 0.35s ease;
}
#site-header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.header-logo img { height: 38px; width: auto; }
.header-logo span {
  font-size: 2.2rem; font-weight: 900; letter-spacing: -0.02em;
  background: linear-gradient(135deg, #0F62FE, #00D4FF);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.header-inner nav {
  display: flex; align-items: center; gap: 8px;
}

/* Mobile Nav */
.nav-links {
  display: none;
  list-style: none; gap: 8px;
}
.nav-links a {
  font-size: 1.5rem; font-weight: 600; color: var(--text-2);
  padding: 8px 14px; border-radius: var(--r-full);
  transition: all 0.25s ease;
}
.nav-links a:hover { color: var(--blue); background: var(--blue-pale); }
.hamburger {
  display: none; background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; position: relative;
}
.hamburger span {
  display: block; width: 22px; height: 2px; background: var(--text);
  position: absolute; left: 7px; transition: all 0.3s ease;
}
.hamburger span:nth-child(1) { top: 10px; }
.hamburger span:nth-child(2) { top: 17px; }
.hamburger span:nth-child(3) { top: 24px; }
.hamburger.is-open span:nth-child(1) { top: 17px; transform: rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { top: 17px; transform: rotate(-45deg); }
.mobile-nav-panel {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: rgba(255,255,255,0.98); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px; z-index: 999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.mobile-nav-panel.is-open { display: block; }
.mobile-nav-panel ul { list-style: none; }
.mobile-nav-panel li { border-bottom: 1px solid var(--border); }
.mobile-nav-panel li:last-child { border-bottom: none; }
.mobile-nav-panel a {
  display: block; padding: 16px 0; font-size: 1.7rem; font-weight: 600; color: var(--text);
  transition: color 0.25s;
}
.mobile-nav-panel a:hover { color: var(--blue); }
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .header-inner .btn--nav { display: none; }
}

/* =================== HERO =================== */
#hero {
  min-height: 90vh;
  padding: calc(72px + 24px) 0 36px;
  background: linear-gradient(175deg, #F8FAFF 0%, #FFFFFF 40%, #F0F7FF 100%);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center;
}
#hero::before {
  content: '';
  position: absolute; top: -20%; right: -8%;
  width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(15,98,254,0.05) 0%, transparent 70%);
  pointer-events: none;
  animation: float-orb 8s ease-in-out infinite;
}
#hero::after {
  content: '';
  position: absolute; bottom: -25%; left: -5%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(253,209,60,0.06) 0%, transparent 65%);
  pointer-events: none;
  animation: float-orb 10s ease-in-out infinite reverse;
}
@keyframes float-orb {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(20px, -20px); }
  66% { transform: translate(-15px, 15px); }
}

/* Hero 科技感网格背景 */
.hero-grid-bg {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    linear-gradient(rgba(15,98,254,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,98,254,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
}

.hero-tag {
  display: inline-block;
  color: var(--text-dim);
  font-size: 2.1rem; font-weight: 600; letter-spacing: 0.06em;
  margin-bottom: 20px;
}


.hero-title {
  font-size: clamp(4.7rem, 7.1vw, 8.6rem);
  font-weight: 900; letter-spacing: -0.04em; line-height: 1.04;
  margin-bottom: 24px;
  color: var(--text);
}
.hero-title .line2 {
  display: block;
  background: linear-gradient(135deg, #0F62FE 0%, #00D4FF 50%, #0F62FE 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: grad-shine 4s ease-in-out infinite;
}

.hero-sub {
  font-size: clamp(2.3rem, 3.1vw+0.4rem, 3.1rem);
  color: var(--text-dim);
  max-width: 620px; line-height: 1.9;
  margin-bottom: 40px;
}

.hero-btns { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }

.hero-visual { position: relative; z-index: 2; }
.hero-visual img {
  width: 100%;
  border-radius: var(--r-lg);
  box-shadow: 0 8px 48px rgba(15,98,254,0.12), 0 24px 64px rgba(0,0,0,0.08);
  border: 1px solid rgba(15,98,254,0.1);
  transition: transform 0.5s ease;
}
.hero-visual:hover img { transform: scale(1.02); }

.hbadge {
  position: absolute;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(15,98,254,0.15);
  border-radius: var(--r-md);
  padding: 12px 20px;
  display: flex; align-items: center; gap: 10px;
  font-size: 1.4rem; font-weight: 700; color: var(--text);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  animation: float-badge 4s ease-in-out infinite;
}
.hbadge--1 { top: 20px; left: -28px; animation-delay: 0s; }
.hbadge--2 { bottom: 36px; right: -28px; animation-delay: 2s; }
.hbadge .dot { 
  width: 10px; height: 10px; border-radius: 50%; 
  background: #00E676;
  box-shadow: 0 0 8px rgba(0,230,118,0.5);
  animation: pulse-green 2s ease-in-out infinite;
}
@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 8px rgba(0,230,118,0.5); }
  50% { box-shadow: 0 0 16px rgba(0,230,118,0.8); }
}
@keyframes float-badge {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

/* geo-img floating badges */
.geobadge {
  position: absolute;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(15,98,254,0.15);
  border-radius: var(--r-md);
  padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
  font-size: 1.3rem; font-weight: 700; color: var(--text);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  animation: float-badge 4.5s ease-in-out infinite;
  z-index: 2;
}
.geobadge--1 { top: -14px; right: -20px; animation-delay: 0s; }
.geobadge--2 { bottom: -14px; left: -20px; animation-delay: 2.25s; }
.geobadge .gdot {
  width: 10px; height: 10px; border-radius: 50%;
  background: #0F62FE;
  box-shadow: 0 0 8px rgba(15,98,254,0.5);
  animation: pulse-blue 2s ease-in-out infinite;
}
@keyframes pulse-blue {
  0%, 100% { box-shadow: 0 0 8px rgba(15,98,254,0.5); }
  50%      { box-shadow: 0 0 16px rgba(15,98,254,0.8); }
}

/* =================== PLATFORMS =================== */
#platforms {
  padding: 20px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.platforms-label {
  text-align: center;
  font-size: 1.6rem; font-weight: 700; letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.platforms-row {
  display: flex; align-items: center; justify-content: center;
  gap: clamp(32px, 5vw, 72px); flex-wrap: wrap;
}
.platforms-row img {
  height: 44px; width: auto;
  opacity: 0.6;
  filter: grayscale(0%);
  transition: all 0.4s ease;
}
.platforms-row img:hover { 
  opacity: 1; 
  transform: scale(1.08);
  filter: drop-shadow(0 4px 12px rgba(15,98,254,0.2));
}

/* =================== GEO INTRO =================== */
.geo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(56px, 6vw, 100px);
  align-items: start;
}
.geo-img-wrap { position: relative; }
.geo-img-wrap img {
  width: 100%; border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: 0 4px 32px rgba(0,0,0,0.06);
}
.geo-grid h2 { font-size: clamp(4.7rem, 7.0vw+0.8rem, 7.4rem); }
.geo-desc {
  font-size: 1.75rem;
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 560px;
}
.faq-section-label {
  font-size: 2rem; font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

/* =================== FAQ (geo intro) =================== */
.faq-list { margin-top: 32px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  padding: 24px 0;
  cursor: pointer; user-select: none;
  transition: color 0.25s;
  font-family: var(--font);
  background: none; border: none; width: 100%; text-align: left; color: inherit;
}
.faq-header:hover { color: var(--blue); }
.faq-icon-title { display: flex; align-items: center; gap: 16px; }
.faq-icon {
  width: 52px; height: 52px; flex-shrink: 0;
  background: linear-gradient(135deg, rgba(15,98,254,0.08) 0%, rgba(0,212,255,0.12) 100%);
  border: 1px solid rgba(15,98,254,0.2);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s ease;
}
.faq-item.is-open .faq-icon {
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  border-color: transparent;
}
.faq-item.is-open .faq-icon svg { fill: #fff; }
.faq-title { font-size: 2rem; font-weight: 700; }
.faq-chevron { 
  width: 22px; height: 22px; flex-shrink: 0; color: var(--text-dim); 
  transition: transform 0.35s ease;
}
.faq-item.is-open .faq-chevron { transform: rotate(180deg); color: var(--blue); }
.faq-item.is-open .faq-header { color: var(--blue); }
.faq-body {
  max-height: 0; overflow: hidden;
  padding: 0 0 0 68px;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.is-open .faq-body { max-height: 300px; padding: 0 0 24px 68px; }
.faq-body li {
  margin-bottom: 10px; color: var(--text-2); font-size: 1.6rem;
  padding-left: 20px; position: relative;
}
.faq-body li::before {
  content: '';
  position: absolute; left: 0; top: 10px;
  width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, #0F62FE, #00D4FF);
}

/* =================== CARD SYSTEM =================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 36px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(15,98,254,0.02) 0%, rgba(0,212,255,0.04) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card::after {
  content: '';
  position: absolute; top: -50%; right: -50%;
  width: 100%; height: 100%;
  background: radial-gradient(circle, rgba(15,98,254,0.03) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.card:hover::after { opacity: 1; }

.card:hover {
  border-color: var(--border-blue);
  box-shadow: 0 8px 40px rgba(15,98,254,0.1);
  transform: translateY(-5px);
}

.card--blue-top {
  position: relative; overflow: hidden;
}
.card--blue-top::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, #0F62FE, #00D4FF, #0F62FE);
  background-size: 200% auto;
  opacity: 0;
  transition: opacity 0.4s, background-position 0.4s;
  animation: grad-shine 3s ease-in-out infinite;
}
.card--blue-top:hover::before { opacity: 1; }

/* =================== AI TRUST MODEL (四维模型科技感图形) =================== */
#ai-trust-model {
  background: linear-gradient(180deg, var(--bg-alt) 0%, #FFFFFF 100%);
}
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pillar-card {
  text-align: center;
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
}
.pillar-card::after {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(15,98,254,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.pillar-icon {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(15,98,254,0.08) 0%, rgba(0,212,255,0.15) 100%);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(15,98,254,0.15);
  transition: all 0.4s ease;
}
.pillar-card:hover .pillar-icon {
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(15,98,254,0.3);
}
.pillar-card:hover .pillar-icon svg { stroke: #fff; }
.pillar-card h3 { font-size: 2.6rem; font-weight: 800; margin-bottom: 14px; color: var(--text); }
.pillar-card p { font-size: 1.55rem; color: var(--text-dim); line-height: 1.75; }

/* =================== TRUST PLATFORM =================== */
.trust-platform-intro {
  max-width: 800px; margin: 0 auto clamp(40px, 5vw, 60px);
  text-align: center;
}
.trust-platform-intro p {
  font-size: 1.85rem; color: var(--text-2); line-height: 1.9;
}

/* Circular Hub Layout */
.hub-container {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
}
/* Mobile Hub: card list (hidden on desktop) */
.hub-mobile-list { display: none; }
.hub-mobile-card {
  display: flex; align-items: flex-start; gap: 16px;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 18px 20px;
  transition: all 0.35s ease;
}
.hub-mobile-card:hover {
  border-color: rgba(15,98,254,0.35);
  box-shadow: 0 4px 20px rgba(15,98,254,0.08);
}
.hub-mobile-card .hn-icon {
  flex-shrink: 0;
}
.hub-mobile-card .hn-title { font-size: 2.2rem; font-weight: 800; color: var(--text); margin-bottom: 2px; }
.hub-mobile-card .hn-en { font-size: 1.2rem; color: var(--blue); font-weight: 600; margin-bottom: 4px; }
.hub-mobile-card .hn-desc { font-size: 1.4rem; color: var(--text-2); line-height: 1.65; }
.hub-svg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
}
.hub-svg line {
  stroke: rgba(15,98,254,0.18);
  stroke-width: 2;
  transition: stroke 0.4s ease;
}
.hub-svg line.active { stroke: rgba(15,98,254,0.5); stroke-width: 2.5; }
.hub-svg circle.conn-dot {
  fill: rgba(15,98,254,0.25);
  transition: fill 0.4s ease;
}
.hub-svg circle.conn-dot.active { fill: #0F62FE; }

/* Center Node */
.hub-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(120px, 16vw, 180px);
  height: clamp(120px, 16vw, 180px);
  border-radius: 50%;
  background: linear-gradient(145deg, #0F62FE 0%, #0060D0 100%);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 10;
  box-shadow:
    0 0 0 12px rgba(15,98,254,0.08),
    0 0 0 28px rgba(15,98,254,0.05),
    0 12px 40px rgba(15,98,254,0.35);
  color: #fff;
  text-align: center;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.hub-center:hover {
  transform: translate(-50%, -50%) scale(1.08);
  box-shadow:
    0 0 0 12px rgba(15,98,254,0.15),
    0 0 0 28px rgba(15,98,254,0.08),
    0 20px 60px rgba(15,98,254,0.45);
}
.hub-center .hc-icon {
  margin-bottom: 6px;
  opacity: 0.9;
}
.hub-center .hc-title {
  font-size: clamp(1.8rem, 2.4vw, 2.6rem);
  font-weight: 900; letter-spacing: 0.04em;
  line-height: 1.3;
}
.hub-center .hc-en {
  font-size: clamp(0.9rem, 1.2vw, 1.3rem);
  font-weight: 600;
  opacity: 0.8;
  letter-spacing: 0.03em;
  margin-top: 2px;
}

/* Peripheral Nodes */
.hub-node {
  position: absolute;
  width: clamp(200px, 24vw, 280px);
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  padding: 20px 22px;
  z-index: 5;
  transition: all 0.35s ease;
  box-shadow: 0 2px 16px rgba(0,0,0,0.04);
  cursor: pointer;
  text-align: center;
}
.hub-node:hover {
  border-color: rgba(15,98,254,0.35);
  box-shadow: 0 8px 32px rgba(15,98,254,0.12);
  transform: scale(1.04);
}
/* positions set inline via style */
.hub-node .hn-icon {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, rgba(15,98,254,0.08), rgba(0,212,255,0.12));
  margin: 0 auto 10px;
  transition: all 0.35s ease;
}
.hub-node:hover .hn-icon {
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  box-shadow: 0 4px 14px rgba(15,98,254,0.3);
}
.hub-node:hover .hn-icon svg { stroke: #fff; }
.hub-node .hn-title {
  font-size: 2.2rem; font-weight: 800;
  color: var(--text);
  margin-bottom: 2px;
}
.hub-node .hn-en {
  font-size: 1.2rem; color: var(--blue);
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}
.hub-node .hn-desc {
  font-size: 1.4rem; color: var(--text-2);
  line-height: 1.65;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}

@media (max-width: 768px) {
  .hub-container { display: none; }
  .hub-mobile-list { display: flex; flex-direction: column; gap: 16px; }
}

/* =================== COMPARISON TABLE =================== */
.compare-section-title {
  text-align: center;
  font-size: 2rem; font-weight: 800;
  color: var(--text);
  margin-bottom: 28px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.compare-section-title .title-icon {
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, #0F62FE, #00D4FF);
}
.compare-section-title span {
  background: linear-gradient(135deg, #0F62FE, #00D4FF);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
  margin-top: 24px;
}
.compare-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 28px;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}
.compare-card::before {
  content: '';
  position: absolute; top: 0; left: 0; width: 4px; height: 100%;
  background: linear-gradient(180deg, #0F62FE, #00D4FF);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.compare-card:hover {
  border-color: rgba(15,98,254,0.2);
  box-shadow: 0 8px 28px rgba(15,98,254,0.08);
  transform: translateY(-3px);
}
.compare-card:hover::before { opacity: 1; }
.compare-card .cc-dim {
  font-size: 1.3rem; font-weight: 700; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.compare-card .cc-old {
  font-size: 1.5rem; color: var(--text-2);
  text-decoration: line-through rgba(0,0,0,0.15);
  margin-bottom: 6px;
}
.compare-card .cc-new {
  font-size: 1.8rem; font-weight: 800;
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.compare-card .cc-arrow {
  display: inline-block;
  margin: 0 8px;
  color: #0F62FE;
  font-size: 1.4rem;
}

/* =================== TRUST FUNNEL v2 (漏斗图形 + 左右布局) =================== */
#trust-funnel { 
  background: linear-gradient(180deg, var(--bg-alt) 0%, #FFFFFF 100%);
}

.funnel-wrapper {
  display: flex;
  gap: 64px;
  max-width: 1060px;
  margin: 48px auto 0;
  align-items: center;
}

/* ---- Left: Funnel Graphic (CSS trapezoid) ---- */
.funnel-graphic {
  flex: 0 0 290px;
  display: flex;
  flex-direction: column;
  filter: drop-shadow(0 10px 36px rgba(15,98,254,0.2));
}

.funnel-trap {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 2.8rem;
  letter-spacing: 0.07em;
  text-align: center;
  line-height: 1.4;
  cursor: default;
  transition: filter 0.35s ease;
  position: relative;
  text-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.funnel-trap:hover {
  filter: brightness(1.18);
}

.funnel-trap--1 {
  height: 120px;
  clip-path: polygon(0% 0%, 100% 0%, 92% 100%, 8% 100%);
  background: linear-gradient(180deg, #0F62FE 0%, #005BD4 100%);
}

.funnel-trap--2 {
  height: 120px;
  clip-path: polygon(8% 0%, 92% 0%, 88% 100%, 12% 100%);
  background: linear-gradient(180deg, #005BD4 0%, #006AD4 100%);
}

.funnel-trap--3 {
  height: 120px;
  clip-path: polygon(12% 0%, 88% 0%, 84% 100%, 16% 100%);
  background: linear-gradient(180deg, #006AD4 0%, #0084C0 100%);
}

.funnel-trap--4 {
  height: 120px;
  clip-path: polygon(16% 0%, 84% 0%, 80% 100%, 20% 100%);
  background: linear-gradient(180deg, #0084C0 0%, #009C98 100%);
}

.funnel-trap--5 {
  height: 120px;
  clip-path: polygon(20% 0%, 80% 0%, 76% 100%, 24% 100%);
  background: linear-gradient(180deg, #009C98 0%, #00B46A 100%);
}

/* ---- Right: Content Cards ---- */
.funnel-cards {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.funnel-card {
  height: 120px;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 14px 28px;
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: all 0.35s ease;
  cursor: default;
}

.funnel-card:hover {
  border-color: #0F62FE;
  background: linear-gradient(135deg, rgba(15,98,254,0.015) 0%, rgba(0,212,255,0.025) 100%);
  box-shadow: 0 8px 28px rgba(15,98,254,0.1);
  transform: translateX(6px);
}

/* Connector dot + line from card to funnel */
.funnel-card::before {
  content: '';
  position: absolute;
  left: -42px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #0F62FE;
  z-index: 2;
  box-shadow: 0 0 14px rgba(15,98,254,0.45), 0 0 0 4px rgba(15,98,254,0.1);
  transition: all 0.35s ease;
}

.funnel-card:hover::before {
  box-shadow: 0 0 20px rgba(15,98,254,0.6), 0 0 0 6px rgba(15,98,254,0.15);
}

.funnel-card::after {
  content: '';
  position: absolute;
  left: -42px;
  top: 50%;
  width: 42px;
  height: 1px;
  background: linear-gradient(90deg, rgba(15,98,254,0.05), rgba(15,98,254,0.45));
  z-index: 1;
}

.fc-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(15,98,254,0.06) 0%, rgba(0,212,255,0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.35s ease;
}

.funnel-card:hover .fc-icon {
  background: linear-gradient(135deg, #0F62FE 0%, #0084C7 100%);
}
.funnel-card:hover .fc-icon svg {
  stroke: #fff;
}

.fc-body {
  flex: 1;
  min-width: 0;
}

.fc-title {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 4px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.fc-title span {
  font-size: 1.2rem;
  color: #0F62FE;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.fc-desc {
  font-size: 1.35rem;
  color: var(--text-2);
  margin-bottom: 8px;
  line-height: 1.4;
}

.fc-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag-result {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 1.15rem;
  font-weight: 600;
  background: linear-gradient(135deg, rgba(15,98,254,0.07) 0%, rgba(0,212,255,0.08) 100%);
  color: #0F62FE;
  border: 1px solid rgba(15,98,254,0.12);
}

.tag-strategy {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 1.15rem;
  font-weight: 500;
  background: linear-gradient(135deg, rgba(0,180,100,0.05) 0%, rgba(0,200,150,0.06) 100%);
  color: #008060;
  border: 1px solid rgba(0,180,100,0.1);
}

/* =================== EVIDENCE CHAIN (科技感图形) =================== */
.evidence-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.evidence-list { display: flex; flex-direction: column; gap: 24px; }
.evidence-item {
  display: flex; gap: 20px; padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.evidence-item::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, #0F62FE, #00D4FF);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.evidence-item:hover::before { opacity: 1; }
.evidence-item:hover {
  border-color: var(--border-blue);
  box-shadow: 0 4px 24px rgba(15,98,254,0.08);
  transform: translateX(4px);
}
.evidence-item .e-icon {
  width: 48px; height: 48px; flex-shrink: 0; border-radius: var(--r-sm);
  background: linear-gradient(135deg, rgba(15,98,254,0.08) 0%, rgba(0,212,255,0.15) 100%);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(15,98,254,0.15);
  transition: all 0.35s ease;
}
.evidence-item:hover .e-icon {
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  border-color: transparent;
}
.evidence-item:hover .e-icon svg { stroke: #fff; }
.evidence-item h3 { font-size: 2.3rem; font-weight: 800; margin-bottom: 6px; }
.evidence-item p { font-size: 1.5rem; color: var(--text-2); line-height: 1.75; }

/* 铁三角科技感图形 */
.evidence-triangle {
  display: flex; flex-direction: column; gap: 24px;
  padding: 48px 44px;
  background: linear-gradient(135deg, #F8FAFF 0%, #FFFFFF 100%);
  border-radius: var(--r-xl);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.evidence-triangle::before {
  content: '';
  position: absolute; top: -30%; left: -10%;
  width: 60%; height: 80%;
  background: radial-gradient(ellipse, rgba(15,98,254,0.04) 0%, transparent 60%);
  pointer-events: none;
}
.tri-visual {
  display: flex; justify-content: center; align-items: center;
  margin-bottom: 12px;
  position: relative;
}
.tri-visual svg { filter: drop-shadow(0 4px 12px rgba(15,98,254,0.15)); }

.tri-item h3 { font-size: 2.5rem; font-weight: 800; margin-bottom: 10px; }
.tri-item p { font-size: 1.55rem; color: var(--text-2); line-height: 1.75; }
.tri-label {
  display: inline-block;
  padding: 5px 14px; border-radius: var(--r-full);
  font-size: 1.7rem; font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.tri-label--quant { background: #EBF2FF; color: #0F62FE; }
.tri-label--qual  { background: #FFF8E1; color: #B8860B; }
.tri-label--auth  { background: #E8F5E9; color: #2E7D32; }

/* =================== PROCESS =================== */
#process { background: var(--bg-alt); }
.process-steps {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; position: relative;
}
.process-line {
  position: absolute; top: 32px; left: 10%; right: 10%;
  height: 3px;
  background: linear-gradient(90deg, #0F62FE, #00D4FF, #0F62FE);
  background-size: 200% auto;
  animation: grad-shine 3s ease-in-out infinite;
}
.process-step {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 0 20px; position: relative; z-index: 1;
}
.step-num {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  font-size: 2rem; font-weight: 800;
  box-shadow: 0 6px 20px rgba(15,98,254,0.3);
  transition: all 0.4s ease;
}
.process-step:hover .step-num {
  transform: scale(1.1);
  box-shadow: 0 8px 28px rgba(15,98,254,0.4);
}
.process-step h3 { font-size: 2.5rem; font-weight: 800; margin-bottom: 12px; color: var(--text); }
.process-step p { font-size: 1.5rem; color: var(--text-2); line-height: 1.75; }

/* =================== STATS =================== */
.stats-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 32px;
  position: relative;
  transition: all 0.4s ease;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #0F62FE, #00D4FF, #0F62FE);
  background-size: 200% auto;
  opacity: 0;
  transition: opacity 0.4s;
  animation: grad-shine 3s ease-in-out infinite;
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover {
  border-color: var(--border-blue);
  box-shadow: 0 8px 40px rgba(15,98,254,0.1);
  transform: translateY(-5px);
}
.stat-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 1.2rem; font-weight: 700; letter-spacing: 0.08em;
  color: var(--blue); background: var(--blue-pale);
  padding: 5px 14px; border-radius: var(--r-full); margin-bottom: 14px;
  text-transform: uppercase;
}
.stat-val {
  font-size: clamp(3.2rem, 4vw, 5rem); font-weight: 900; line-height: 1; margin-bottom: 10px;
  background: linear-gradient(135deg, #0F62FE 0%, #00D4FF 50%, #0F62FE 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: grad-shine 4s ease-in-out infinite;
}
.stat-title { font-size: 2.2rem; font-weight: 800; margin-bottom: 8px; color: var(--text); }
.stat-desc { font-size: 1.5rem; color: var(--text-2); line-height: 1.75; }

/* =================== CASE GRID =================== */
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 5vw, 72px); align-items: center; }
.case-img img {
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: 0 4px 32px rgba(0,0,0,0.06);
}

/* =================== ROADMAP =================== */
#roadmap { background: var(--bg-alt); }
.roadmap-phases {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.phase-card {
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}
.phase-card::after {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 80px; height: 80px;
  background: radial-gradient(circle, rgba(15,98,254,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.phase-tag {
  display: inline-block;
  font-size: 1.3rem; font-weight: 700; letter-spacing: 0.06em;
  padding: 6px 16px; border-radius: var(--r-full);
  margin-bottom: 18px;
  color: #fff;
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  box-shadow: 0 4px 12px rgba(15,98,254,0.2);
}
.phase-card h3 { font-size: 2.4rem; font-weight: 800; margin-bottom: 12px; }
.phase-card .phase-time { font-size: 1.8rem; color: var(--blue); font-weight: 700; margin-bottom: 16px; }
.phase-card p { font-size: 1.5rem; color: var(--text-2); line-height: 1.75; margin-bottom: 10px; }
.phase-card .phase-metric {
  margin-top: 16px; padding: 12px 18px;
  background: linear-gradient(135deg, rgba(15,98,254,0.08) 0%, rgba(0,212,255,0.12) 100%);
  border-radius: var(--r-sm);
  font-size: 1.4rem; color: var(--blue); font-weight: 700;
  border: 1px solid rgba(15,98,254,0.12);
}

/* =================== FEATURES =================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.4s ease;
  position: relative;
}
.feature-card::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(15,98,254,0.02) 0%, rgba(0,212,255,0.04) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.feature-card:hover::after { opacity: 1; }
.feature-card:hover {
  border-color: var(--border-blue);
  box-shadow: 0 8px 40px rgba(15,98,254,0.1);
  transform: translateY(-6px);
}
.feature-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.feature-card-body { padding: 28px; }
.feature-card h3 { font-size: 2.5rem; font-weight: 800; margin-bottom: 16px; color: var(--text); }
.feature-card li {
  font-size: 1.5rem; color: var(--text-2); margin-bottom: 8px;
  padding-left: 20px; position: relative;
}
.feature-card li::before {
  content: '';
  position: absolute; left: 0; top: 10px;
  width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, #0F62FE, #00D4FF);
}

/* =================== SERVICES =================== */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.service-card {
  display: flex; align-items: flex-start; gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, #0F62FE, #00D4FF);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.service-card:hover::before { opacity: 1; }
.service-card:hover {
  border-color: var(--border-blue);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(15,98,254,0.08);
}
.s-icon {
  width: 50px; height: 50px; flex-shrink: 0; border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(15,98,254,0.08) 0%, rgba(0,212,255,0.15) 100%);
  border: 1px solid rgba(15,98,254,0.15);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.35s ease;
}
.service-card:hover .s-icon {
  background: linear-gradient(135deg, #0F62FE, #0084C7);
  border-color: transparent;
}
.service-card:hover .s-icon svg { stroke: #fff; }
.service-card h3 { font-size: 2.3rem; font-weight: 800; margin-bottom: 6px; color: var(--text); }
.service-card p { font-size: 1.45rem; color: var(--text-dim); line-height: 1.7; }

/* =================== FAQ (seo faq) =================== */
.seo-faq-item { border-bottom: 1px solid var(--border); }
.seo-faq-item:first-child { border-top: 1px solid var(--border); }
.seo-faq-header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 26px 0;
  cursor: pointer; user-select: none;
  transition: color 0.25s;
  font-family: var(--font);
  background: none; border: none; width: 100%; text-align: left; color: inherit;
}
.seo-faq-header:hover { color: var(--blue); }
.seo-faq-header h3 { font-size: 2.3rem; font-weight: 700; flex: 1; color: var(--text); }
.seo-faq-icon {
  width: 24px; height: 24px; flex-shrink: 0; color: var(--text-dim); transition: transform 0.35s;
}
.seo-faq-item.is-open .seo-faq-icon { transform: rotate(45deg); color: var(--blue); }
.seo-faq-item.is-open .seo-faq-header { color: var(--blue); }
.seo-faq-body {
  max-height: 0; overflow: hidden;
  padding: 0;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.seo-faq-item.is-open .seo-faq-body { max-height: 640px; padding: 0 0 26px; }
.seo-faq-body p { font-size: 1.65rem; color: var(--text-2); line-height: 1.85; }

/* =================== CTA =================== */
#cta { background: var(--bg-alt); }
.cta-wrap {
  background: linear-gradient(135deg, #0F62FE 0%, #0084C7 50%, #0F62FE 100%);
  background-size: 200% auto;
  animation: grad-shine 6s ease-in-out infinite;
  border-radius: var(--r-xl);
  padding: clamp(56px, 7vw, 96px) clamp(40px, 6vw, 88px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-wrap::before {
  content: '';
  position: absolute; top: -30%; right: -10%; width: 50%; height: 160%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.1) 0%, transparent 60%);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 1; }
.cta-wrap h2 { font-size: clamp(3.6rem, 5.85vw, 5.7rem); margin-bottom: 20px; color: #fff; }
.cta-wrap p { font-size: 1.9rem; color: rgba(255,255,255,0.9); margin-bottom: 44px; max-width: 560px; margin-left: auto; margin-right: auto; line-height: 1.85; }
.cta-btns { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.cta-wrap .btn--primary {
  background: #fff;
  color: var(--blue);
  box-shadow: 0 6px 24px rgba(0,0,0,0.15);
}
.cta-wrap .btn--primary:hover {
  background: #F0F4FF;
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

/* =================== FOOTER =================== */
#site-footer {
  background: linear-gradient(180deg, #1A1A2E 0%, #0F1028 100%);
  color: rgba(255,255,255,0.65);
  padding: 64px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1.3fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
  text-align: left;
}
.footer-col-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.92);
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: #fff;
  text-decoration: none;
}
.footer-brand img {
  height: 36px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  /* 保留彩色 LOGO，勿 invert 成白块 */
  filter: none;
  opacity: 1;
}
.footer-brand span {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.footer-intro {
  font-size: 1.45rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.48);
  max-width: 320px;
  margin: 0;
}
.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-list a {
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1.45;
  color: rgba(255,255,255,0.55);
  transition: color 0.25s;
}
.footer-list a:hover { color: var(--yellow); }
.footer-meta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 1.4rem;
  line-height: 1.55;
  color: rgba(255,255,255,0.55);
}
.footer-meta-list span {
  display: block;
  font-size: 1.2rem;
  color: rgba(255,255,255,0.35);
  margin-bottom: 2px;
}
.footer-contact-intro {
  font-size: 1.4rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.5);
  margin: 0 0 14px;
}
.footer-contact-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 999px;
  font-size: 1.35rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  word-break: break-all;
}
.footer-btn:hover { transform: translateY(-2px); }
.footer-btn--email {
  background: linear-gradient(135deg, #0F62FE 0%, #00A3E0 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(15,98,254,0.35);
}
.footer-btn--email:hover { filter: brightness(1.06); color: #fff; }
.footer-btn--line {
  background: #06C755;
  color: #fff;
  box-shadow: 0 6px 20px rgba(6,199,85,0.28);
}
.footer-btn--line:hover { filter: brightness(1.05); color: #fff; }
.footer-contact-note {
  margin: 12px 0 0;
  font-size: 1.25rem;
  color: rgba(255,255,255,0.38);
}
.footer-rule { width: 100%; height: 1px; background: rgba(255,255,255,0.08); margin: 36px 0 22px; }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px 10px;
  margin-bottom: 18px;
  font-size: 1.35rem;
  color: rgba(255,255,255,0.42);
}
.footer-legal a { color: rgba(255,255,255,0.5); transition: color 0.25s; }
.footer-legal a:hover { color: rgba(255,255,255,0.85); }
.footer-legal-sep { opacity: 0.45; }
.footer-copy {
  font-size: 1.35rem;
  color: rgba(255,255,255,0.38);
  display: flex;
  gap: 16px 28px;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}
.footer-copy-right { display: inline-flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; }
.footer-copy a { color: rgba(255,255,255,0.4); transition: color 0.25s; }
.footer-copy a:hover { color: rgba(255,255,255,0.75); }

@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-intro { max-width: none; }
  .footer-copy { justify-content: center; text-align: center; }
  .footer-copy-right { justify-content: center; }
}

/* =================== SCROLL REVEAL =================== */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* =================== RESPONSIVE =================== */
@media(max-width:1024px) {
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .roadmap-phases { grid-template-columns: repeat(2, 1fr); }
}
@media(max-width:960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .geo-grid { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-line { display: none; }
  .stats-2col { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .platform-components { grid-template-columns: 1fr; }
  .funnel-wrapper { flex-direction: column; gap: 32px; }
  .funnel-graphic { flex: 0 0 auto; width: 200px; align-self: center; }
  .funnel-card::before, .funnel-card::after { display: none; }
}
@media(max-width:600px) {
  .pillar-grid { grid-template-columns: 1fr; }
  .roadmap-phases { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
  .features-grid { grid-template-columns: 1fr; }
  .funnel-card { height: auto; }
}
@media(min-width:769px) {
  .nav-links { display: flex !important; }
  .hamburger { display: none !important; }
}

/* =================== ABOUT / INNER PAGE =================== */
.page-about {
  max-width: none;
  width: 100%;
  margin: 0;
}
.page-about-crumb {
  display: none;
}

.page-about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: clamp(32px, 5vw, 56px);
  box-shadow: 0 12px 40px rgba(15, 98, 254, 0.06);
}

.page-about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.page-about-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-hero);
}

.page-about-title {
  font-size: clamp(3.2rem, 5vw, 4.6rem) !important;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.2;
  margin: 0 0 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.page-about-body {
  font-family: var(--font);
  font-size: 1.75rem;
  line-height: 1.85;
  color: var(--text-2);
}
.page-about-body > *:first-child { margin-top: 0; }
.page-about-body p {
  margin: 0 0 1.15em;
  color: var(--text-2);
  font-size: 1.75rem;
  line-height: 1.85;
}
.page-about-body h2 {
  font-size: clamp(2.4rem, 3.2vw, 3.1rem) !important;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 1.6em 0 0.7em;
  line-height: 1.3;
}
.page-about-body h3 {
  font-size: clamp(2rem, 2.5vw, 2.5rem) !important;
  font-weight: 700;
  color: var(--text);
  margin: 1.35em 0 0.55em;
  line-height: 1.35;
}
.page-about-body h4 {
  font-size: 1.9rem !important;
  font-weight: 700;
  color: var(--text);
  margin: 1.2em 0 0.45em;
}
.page-about-body ul,
.page-about-body ol {
  list-style: none;
  margin: 0 0 1.2em;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about-body ul li,
.page-about-body ol li {
  position: relative;
  padding-left: 1.35em;
  font-size: 1.75rem;
  line-height: 1.75;
  color: var(--text-2);
}
.page-about-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-pale);
}
.page-about-body ol {
  counter-reset: about-ol;
}
.page-about-body ol li {
  counter-increment: about-ol;
  padding-left: 2em;
}
.page-about-body ol li::before {
  content: counter(about-ol);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 1.5em;
  height: 1.5em;
  border-radius: 50%;
  background: var(--blue-pale);
  color: var(--blue);
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-about-body a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about-body a:hover { color: var(--blue-dark); }
.page-about-body strong { color: var(--text); font-weight: 700; }
.page-about-body blockquote {
  margin: 1.4em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--blue);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: linear-gradient(135deg, rgba(15,98,254,0.05), rgba(0,212,255,0.06));
  color: var(--text-dim);
  font-size: 1.7rem;
}
.page-about-body img {
  border-radius: var(--r-md);
  margin: 1.2em 0;
  border: 1px solid var(--border);
}
.page-about-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

.page-about-cta {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about-cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 600px) {
  .page-about-card {
    padding: 24px 20px;
    border-radius: var(--r-md);
  }
  .page-about-cta .btn { width: 100%; justify-content: center; }
}