/* ============================================================
   溪行信息科技 官网样式
   Brand Colors:
     Blue      #65BCC4
     Blue 50%  #B8DDE6
     Blue 25%  #E5F2F8
     Orange    #F4901E
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Brand */
  --c-blue:       #65BCC4;
  --c-blue-50:    #B8DDE6;
  --c-blue-25:    #E5F2F8;
  --c-orange:     #F4901E;
  --c-orange-light: #FBB96A;
  --c-orange-pale:  #FEF3E6;

  /* Backgrounds */
  --c-bg:         #ffffff;
  --c-bg-soft:    #F7FBFD;
  --c-surface:    #EEF8FB;
  --c-surface-2:  #E5F2F8;

  /* Borders */
  --c-border:       rgba(101, 188, 196, 0.2);
  --c-border-hover: rgba(101, 188, 196, 0.5);

  /* Text */
  --c-text:       #1A2B30;
  --c-text-muted: #4A6B72;
  --c-text-dim:   #8AADB3;

  /* Accent = Blue */
  --c-accent:       #65BCC4;
  --c-accent-dark:  #4A9EA6;
  --c-accent-glow:  rgba(101, 188, 196, 0.25);

  /* Highlight = Orange */
  --c-highlight:    #F4901E;

  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm:   0 1px 4px rgba(101,188,196,0.10), 0 2px 12px rgba(0,0,0,0.06);
  --shadow-card: 0 2px 8px rgba(101,188,196,0.12), 0 8px 32px rgba(0,0,0,0.06);
  --shadow-glow: 0 0 40px var(--c-accent-glow);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-h: 72px;
  --container: 1200px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

/* ---------- Utility ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent-dark);
  background: var(--c-blue-25);
  border: 1px solid var(--c-blue-50);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--c-text-muted);
  max-width: 520px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .section-desc {
  margin: 0 auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(101, 188, 196, 0.4);
}
.btn--primary:hover {
  background: var(--c-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(101, 188, 196, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--c-text);
  border: 1.5px solid var(--c-border-hover);
}
.btn--ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent-dark);
  background: var(--c-blue-25);
}

.btn--white {
  background: #fff;
  color: var(--c-accent-dark);
  font-weight: 700;
  border: 1.5px solid rgba(255,255,255,0.6);
}
.btn--white:hover {
  background: var(--c-blue-25);
  transform: translateY(-2px);
}

.btn--orange {
  background: var(--c-orange);
  color: #fff;
  box-shadow: 0 4px 16px rgba(244, 144, 30, 0.35);
}
.btn--orange:hover {
  background: #e07d10;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(244, 144, 30, 0.4);
}

.btn--full { width: 100%; justify-content: center; }

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal--delay  { transition-delay: 0.12s; }
.reveal--delay2 { transition-delay: 0.24s; }
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
  border-bottom: 1px solid transparent;
  background: rgba(255,255,255,0.92);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--c-border);
  box-shadow: 0 2px 20px rgba(101,188,196,0.12);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav__logo img {
  height: 44px;
  width: auto;
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav__links a:hover {
  color: var(--c-accent-dark);
  background: var(--c-blue-25);
}

.nav__cta {
  background: var(--c-orange) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 2px 10px rgba(244,144,30,0.3);
}
.nav__cta:hover {
  background: #e07d10 !important;
  color: #fff !important;
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  padding-top: var(--nav-h);
  overflow: hidden;
  background: var(--c-bg);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(101,188,196,0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(101,188,196,0.09) 1px, transparent 1px);
  background-size: 52px 52px;
}

/* 光晕装饰 */
.hero__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(70px);
}
.hero__glow--1 {
  top: -10%;
  right: 5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(101,188,196,0.20) 0%, transparent 70%);
}
.hero__glow--2 {
  bottom: -10%;
  left: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(244,144,30,0.10) 0%, transparent 70%);
}

/* ── 右侧出海视觉装饰 ── */
.hero__visual {
  position: absolute;
  right: 20%;
  top: 50%;
  transform: translateY(-50%);
  width: 420px;
  z-index: 1;
  pointer-events: none;
}

.hero__globe-svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 8px 40px rgba(101,188,196,0.18));
}

/* ── 文案层：z-index 在地图之上 ── */
.hero__layout {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 100px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  min-height: calc(100vh - var(--nav-h));
  box-sizing: border-box;
  width: 100%;
}

.hero__content {
  min-width: 0;
}

/* 航线虚线动画 */
.route {
  animation: dashMove 3s linear infinite;
}
.route--1 { animation-delay: 0s; }
.route--2 { animation-delay: 0.9s; }
.route--3 { animation-delay: 1.8s; }

@keyframes dashMove {
  to { stroke-dashoffset: -40; }
}

/* 苏州节点脉冲 */
.pulse-ring {
  animation: pulseRing 2.4s ease-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes pulseRing {
  0%   { r: 14; opacity: 0.5; }
  100% { r: 30; opacity: 0; }
}

/* 浮动信息卡片 */
.hero__badge {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--c-border);
  border-radius: 100px;
  padding: 7px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--c-text);
  box-shadow: 0 4px 20px rgba(101,188,196,0.14);
  white-space: nowrap;
  pointer-events: none;
}
.hero__badge--1 {
  top: 8%;
  left: -8%;
  animation: floatBadge 4s ease-in-out infinite;
}
.hero__badge--2 {
  bottom: 14%;
  left: -4%;
  animation: floatBadge 4s 1.4s ease-in-out infinite;
}
.hero__badge--3 {
  top: 50%;
  right: -6%;
  animation: floatBadge 4s 2.6s ease-in-out infinite;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.badge-dot--orange { background: var(--c-orange); }
.badge-dot--blue   { background: var(--c-blue); }

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent-dark);
  background: var(--c-blue-25);
  border: 1px solid var(--c-blue-50);
  padding: 5px 14px;
  border-radius: 100px;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.7s 0.2s forwards;
}

.hero__tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
}

.hero__title {
  font-size: clamp(32px, 3.6vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--c-text);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.7s 0.35s forwards;
}

.hero__title em {
  font-style: normal;
  color: var(--c-accent-dark);
  position: relative;
}

.hero__title em::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 6px;
  background: rgba(101,188,196,0.25);
  border-radius: 3px;
  z-index: -1;
}

.hero__desc {
  font-size: 17px;
  color: var(--c-text-muted);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.7s 0.5s forwards;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 72px;
  opacity: 0;
  animation: fadeUp 0.7s 0.65s forwards;
}

.hero__stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 40px;
  border-top: 1px solid var(--c-border);
  opacity: 0;
  animation: fadeUp 0.7s 0.8s forwards;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero__stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--c-text);
  letter-spacing: -0.03em;
  line-height: 1;
}

.hero__stat-num sup {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-orange);
}

.hero__stat-label {
  font-size: 13px;
  color: var(--c-text-muted);
  font-weight: 500;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: fadeIn 1s 1.2s forwards;
}

.hero__scroll-hint span {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-dim);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ============================================================
   PARTNERS
   ============================================================ */
.partners {
  padding: 36px 0;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.partners__label {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin-bottom: 24px;
}

.partners__row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.partners__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.6;
  transition: opacity var(--transition), transform var(--transition);
}

.partners__item:hover {
  opacity: 1;
  transform: translateY(-2px);
}

.partner-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  display: block;
}

.partners__item span {
  font-size: 11px;
  color: var(--c-text-dim);
  letter-spacing: 0.01em;
}

.partners__item svg {
  width: 32px;
  height: 32px;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--c-bg);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__text {
  color: var(--c-text-muted);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
}

.about__text:last-of-type {
  margin-bottom: 36px;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-accent), var(--c-blue-25));
  border-radius: 2px;
}

.timeline__item {
  position: relative;
  margin-bottom: 36px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: -38px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 2px solid #fff;
  box-shadow: 0 0 0 3px var(--c-blue-50);
}

.timeline__year {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-orange);
  letter-spacing: 0.04em;
  min-width: 40px;
  padding-top: 2px;
}

.timeline__content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 4px;
}

.timeline__content p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  background: var(--c-bg-soft);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.service-card {
  background: var(--c-bg);
  padding: 48px 40px;
  position: relative;
  transition: background var(--transition);
}

.service-card:hover {
  background: var(--c-blue-25);
}

.service-card__icon {
  color: var(--c-accent);
  margin-bottom: 20px;
}

.service-card__num {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-text-dim);
  margin-bottom: 12px;
}

.service-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.service-card p {
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.service-card__list {
  margin-bottom: 28px;
}

.service-card__list li {
  font-size: 14px;
  color: var(--c-text-muted);
  padding: 7px 0;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-card__list li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
}

.service-card__link {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent-dark);
  transition: gap var(--transition), color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-card__link:hover {
  color: var(--c-orange);
  gap: 8px;
}

/* ============================================================
   COMPARE
   ============================================================ */
.compare {
  background: var(--c-bg);
}

.compare__table {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}

.compare__head,
.compare__row {
  display: grid;
  grid-template-columns: 180px 1fr 1fr 1fr;
  border-bottom: 1px solid var(--c-border);
}

.compare__row:last-child {
  border-bottom: none;
}

.compare__head {
  background: var(--c-surface);
}

.compare__cell {
  padding: 18px 24px;
  font-size: 14px;
  color: var(--c-text-muted);
  border-right: 1px solid var(--c-border);
  display: flex;
  align-items: center;
}

.compare__cell:last-child {
  border-right: none;
}

.compare__cell--label {
  font-weight: 600;
  color: var(--c-text-dim);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.compare__platform {
  font-size: 15px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
}

.compare__platform--fb { color: #1877F2; background: rgba(24,119,242,0.08); }
.compare__platform--tk { color: #ee1d52; background: rgba(238,29,82,0.08); }
.compare__platform--li { color: #0077b5; background: rgba(0,119,181,0.08); }

.strategy__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.strategy-card {
  background: var(--c-bg-soft);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.strategy-card:hover {
  border-color: var(--c-accent);
  background: var(--c-blue-25);
  box-shadow: var(--shadow-sm);
}

.strategy-card__type {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-accent-dark);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.strategy-card__flow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.strategy-card__flow span {
  font-size: 13px;
  color: var(--c-text-muted);
  background: rgba(101,188,196,0.1);
  border: 1px solid var(--c-border);
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
}

.strategy-card__flow svg {
  color: var(--c-text-dim);
  flex-shrink: 0;
}

/* ============================================================
   ADVANTAGES
   ============================================================ */
.advantages {
  background: var(--c-bg-soft);
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.adv-card {
  background: var(--c-bg);
  padding: 40px 36px;
  transition: background var(--transition);
}

.adv-card:hover {
  background: var(--c-blue-25);
}

.adv-card__icon {
  color: var(--c-accent);
  margin-bottom: 20px;
}

.adv-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.adv-card p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.75;
}

/* ============================================================
   CASES
   ============================================================ */
.cases {
  background: var(--c-bg);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.case-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.case-card__tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--c-accent-dark);
  background: var(--c-blue-25);
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.case-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.case-card p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.case-card__metrics {
  display: flex;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
}

.case-card__metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--c-text-dim);
}

.case-card__metric span {
  font-size: 24px;
  font-weight: 800;
  color: var(--c-orange);
  letter-spacing: -0.02em;
  line-height: 1;
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-dark) 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  pointer-events: none;
}

.cta-band::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: 10%;
  width: 300px;
  height: 300px;
  background: rgba(244,144,30,0.15);
  border-radius: 50%;
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-band__text h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.cta-band__text p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: var(--c-bg-soft);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.contact__left p {
  font-size: 16px;
  color: var(--c-text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--c-text-muted);
}

.contact__info-item svg {
  color: var(--c-accent);
  flex-shrink: 0;
}

/* Form */
.contact-form {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text-muted);
  letter-spacing: 0.02em;
}

.form-group label span {
  color: var(--c-orange);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--c-bg-soft);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--c-text);
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  outline: none;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--c-text-dim);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-accent);
  background: var(--c-bg);
  box-shadow: 0 0 0 3px rgba(101,188,196,0.15);
}

.form-group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238AADB3' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-color: var(--c-bg-soft);
  padding-right: 36px;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
}

.footer__main {
  padding: 64px 0 48px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}

/* 品牌区 */
.footer__logo {
  display: inline-block;
  margin-bottom: 16px;
}

.footer__logo img {
  height: 44px;
  width: auto;
}

.footer__slogan {
  font-size: 14px;
  color: var(--c-text-muted);
  margin-bottom: 10px;
  line-height: 1.6;
}

.footer__company {
  font-size: 11px;
  line-height: 1.7;
  color: var(--c-text-dim);
  margin-bottom: 24px;
}

/* 社媒图标 */
.footer__social {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.footer__social-link:hover {
  background: var(--c-blue-25);
  border-color: var(--c-blue);
  transform: translateY(-2px);
}

.footer__social-link img {
  width: 16px;
  height: 16px;
  /* 统一变成品牌蓝色 */
  filter: brightness(0) saturate(100%) invert(64%) sepia(40%) saturate(400%) hue-rotate(148deg) brightness(95%);
}

.footer__social-link:hover img {
  filter: brightness(0) saturate(100%) invert(40%) sepia(60%) saturate(500%) hue-rotate(148deg) brightness(90%);
}

/* 导航列 */
.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer__col h5 {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-blue);
  display: inline-block;
}

.footer__col a,
.footer__col span {
  font-size: 13.5px;
  color: var(--c-text-muted);
  transition: color var(--transition);
  line-height: 1.5;
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--c-text-muted);
  font-size: 13.5px;
}

.footer__contact-item svg {
  flex-shrink: 0;
  color: var(--c-blue);
}

.footer__col a:hover {
  color: var(--c-accent-dark);
}

/* 底栏 */
.footer__bottom {
  border-top: 1px solid var(--c-border);
  padding: 18px 0;
}

.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer__bottom span,
.footer__bottom a {
  font-size: 12.5px;
  color: var(--c-text-dim);
}

.footer__bottom a:hover {
  color: var(--c-accent-dark);
}

.footer__bottom-links {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--c-text-dim);
  font-size: 12.5px;
}

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.1); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1200px) {
  .hero__visual { width: 360px; right: 6%; }
  .hero__badge  { display: none; }
}

@media (max-width: 1024px) {
  .hero__layout { gap: 24px; padding: 80px 24px 60px; }
  .about__inner { grid-template-columns: 1fr; gap: 60px; }
  .services__grid { grid-template-columns: 1fr; }
  .advantages__grid { grid-template-columns: repeat(2, 1fr); }
  .cases__grid { grid-template-columns: 1fr 1fr; }
  .compare__head,
  .compare__row { grid-template-columns: 140px 1fr 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  .section { padding: 72px 0; }

  .nav__links { display: none; flex-direction: column; gap: 4px; }
  .nav__links.open {
    display: flex;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    padding: 20px 24px 32px;
    border-bottom: 1px solid var(--c-border);
    box-shadow: 0 8px 24px rgba(101,188,196,0.1);
  }
  .nav__links a { padding: 12px 16px; font-size: 16px; }
  .nav__burger { display: flex; }

  .hero__layout {
    grid-template-columns: 1fr;
    padding: 60px 24px 48px;
    min-height: auto;
  }
  .hero__visual { display: none; }

  .hero__stats { gap: 32px; }
  .hero__stat-num { font-size: 28px; }

  .advantages__grid { grid-template-columns: 1fr; }
  .cases__grid { grid-template-columns: 1fr; }
  .strategy__grid { grid-template-columns: 1fr; }

  .compare__head,
  .compare__row { grid-template-columns: 100px 1fr 1fr 1fr; }
  .compare__cell { padding: 12px 14px; font-size: 12px; }

  .contact__inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-form { padding: 28px 24px; }
  .form-row { grid-template-columns: 1fr; }

  .cta-band__inner { flex-direction: column; text-align: center; }

  .footer__inner { grid-template-columns: 1fr; gap: 48px; }
  .footer__nav { grid-template-columns: repeat(2, 1fr); gap: 32px; }

  .footer__bottom .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .partners__row { gap: 28px; }
  .footer__nav { grid-template-columns: 1fr; }
}