/* ==================== Reset & Base ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1a5b8c;
  --primary-dark: #144a73;
  --primary-light: #2d7eb0;
  --accent: #ff6b35;
  --accent-dark: #e8541e;
  --text: #1a2530;
  --text-light: #5a6b78;
  --bg: #ffffff;
  --bg-soft: #f5f7f9;
  --bg-dark: #0f2a3f;
  --border: #e1e7ec;
  --success: #2bb673;
  --warning: #f0a500;
  --shadow: 0 4px 20px rgba(26, 91, 140, 0.08);
  --shadow-lg: 0 20px 50px rgba(26, 91, 140, 0.15);
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "STHeiti", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==================== Top Bar ==================== */
.topbar {
  background: var(--bg-dark);
  color: #b8c5cd;
  font-size: 13px;
  padding: 8px 0;
}

.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar a {
  color: #b8c5cd;
}

.topbar a:hover {
  color: var(--accent);
}

.topbar-links {
  display: flex;
  gap: 20px;
}

/* ==================== Header / Nav ==================== */
.header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
  color: var(--primary);
}

.logo-mark::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
  transform: rotate(45deg);
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 10px 18px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  position: relative;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  background: rgba(26, 91, 140, 0.05);
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.nav .nav-cta {
  background: var(--primary);
  color: #fff;
  margin-left: 8px;
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.2s ease;
  border: 1px solid var(--primary);
}

.nav .nav-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  border-color: var(--primary-dark);
}

.nav .nav-cta.nav-cta-login {
  background: #fff;
  color: var(--primary);
}

.nav .nav-cta.nav-cta-login:hover {
  background: var(--primary);
  color: #fff;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(26, 91, 140, 0.2);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 107, 53, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn-lg {
  padding: 18px 42px;
  font-size: 16px;
}

/* ==================== Hero (清新浅色风格) ==================== */
.hero {
  position: relative;
  background: linear-gradient(160deg, #eaf3f6 0%, #f7fafc 45%, #ffffff 100%);
  color: var(--text);
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26, 91, 140, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -250px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  padding: 7px 16px;
  border-radius: 24px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(26, 91, 140, 0.06);
}

.hero-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--accent), #ffae80);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
}

.hero h1 {
  font-size: 52px;
  line-height: 1.18;
  font-weight: 800;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
  color: var(--text);
}

.hero h1 .accent {
  position: relative;
  color: var(--accent);
  display: inline-block;
}

.hero h1 .accent::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 12px;
  background: rgba(255, 107, 53, 0.18);
  z-index: -1;
  border-radius: 4px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-light);
  margin-bottom: 36px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
  color: var(--text-light);
  padding-top: 24px;
  border-top: 1px dashed var(--border);
}

.hero-trust .trust-label {
  color: var(--text);
  font-weight: 600;
}

.hero-trust .trust-item {
  color: var(--primary);
  font-weight: 500;
}

/* ===== Hero 右侧 - 数据驾驶舱 ===== */
.hero-visual {
  position: relative;
  height: 500px;
}

.hero-board {
  position: absolute;
  top: 30px;
  left: 30px;
  right: 30px;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 25px 60px rgba(26, 91, 140, 0.12), 0 4px 12px rgba(26, 91, 140, 0.06);
  overflow: hidden;
  border: 1px solid rgba(26, 91, 140, 0.05);
}

.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: linear-gradient(135deg, #f7fafc, #ffffff);
  border-bottom: 1px solid var(--border);
}

.board-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.board-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(43, 182, 115, 0.2);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(43, 182, 115, 0.2); }
  50% { box-shadow: 0 0 0 6px rgba(43, 182, 115, 0.05); }
}

.board-tag {
  background: rgba(43, 182, 115, 0.1);
  color: var(--success);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
  letter-spacing: 1px;
}

.board-body {
  padding: 24px;
}

.board-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.board-stat {
  background: linear-gradient(135deg, #f7fafc, #eaf3f6);
  border-radius: 12px;
  padding: 16px 18px;
  position: relative;
}

.board-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
}

.board-stat-label {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
}

.board-stat-trend {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 8px;
}

.board-stat-trend.up {
  background: rgba(43, 182, 115, 0.12);
  color: var(--success);
}

.board-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 8px;
  height: 100px;
  padding: 8px 0 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.chart-bar {
  flex: 1;
  height: var(--h);
  background: linear-gradient(180deg, var(--primary-light), var(--primary));
  border-radius: 4px 4px 0 0;
  opacity: 0.4;
  transition: opacity 0.3s;
}

.chart-bar.active {
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  opacity: 1;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.board-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--text-light);
}

.board-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.board-meta i {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  display: inline-block;
}

/* ===== 浮动信息卡 ===== */
.hero-float {
  position: absolute;
  background: #fff;
  border-radius: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 12px 32px rgba(26, 91, 140, 0.12);
  border: 1px solid rgba(26, 91, 140, 0.05);
  min-width: 180px;
}

.hero-float strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.hero-float small {
  display: block;
  font-size: 11px;
  color: var(--text-light);
}

.hero-float .float-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.hero-float-1 {
  bottom: 60px;
  left: -10px;
  animation: float 6s ease-in-out infinite;
}

.hero-float-1 .float-icon {
  background: rgba(26, 91, 140, 0.1);
  color: var(--primary);
}

.hero-float-2 {
  top: 0;
  right: -10px;
  animation: float 6s ease-in-out infinite 2s;
}

.hero-float-2 .float-icon {
  background: rgba(255, 107, 53, 0.12);
  color: var(--accent);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@media (max-width: 900px) {
  .hero { padding: 50px 0 60px; }
  .hero h1 { font-size: 36px; }
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: auto; min-height: 360px; }
  .hero-float-1, .hero-float-2 { display: none; }
}

/* ==================== Section ==================== */
.section {
  padding: 100px 0;
}

.section-soft {
  background: var(--bg-soft);
}

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  background: rgba(26, 91, 140, 0.08);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-dark .section-tag {
  background: rgba(255, 107, 53, 0.15);
  color: var(--accent);
}

.section h2 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}

.section-dark .section-desc {
  color: #c8d3da;
}

/* ==================== Feature Cards ==================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(26, 91, 140, 0.1), rgba(42, 122, 138, 0.1));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
  font-size: 24px;
  font-weight: 800;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ==================== Product Modules ==================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.product-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  transition: all 0.3s ease;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  transform: translateY(-2px);
}

.product-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.product-icon::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30%;
  background: rgba(255, 255, 255, 0.1);
}

.product-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.product-info p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-tags span {
  background: var(--bg-soft);
  color: var(--text-light);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
}

/* ==================== Cases ==================== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.case-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

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

.case-img {
  width: 100%;
  height: 220px;
  background: var(--bg-soft);
  overflow: hidden;
  position: relative;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.case-card:hover .case-img img {
  transform: scale(1.05);
}

.case-body {
  padding: 24px 28px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-industry {
  display: inline-block;
  background: rgba(255, 107, 53, 0.1);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
  width: fit-content;
}

.case-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.case-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
}

.case-meta {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
}

/* ==================== Download News ==================== */
.download-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.download-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 28px 32px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
}

.download-item:last-child {
  border-bottom: none;
}

.download-item:hover {
  background: var(--bg-soft);
}

.download-format-tag {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--accent);
  color: #fff;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border-bottom-left-radius: 8px;
  letter-spacing: 0.5px;
}

.download-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.download-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.download-action {
  flex-shrink: 0;
}

/* ==================== Footer ==================== */
.footer {
  background: var(--bg-dark);
  color: #c8d3da;
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  color: #8a99a3;
  margin-top: 12px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #8a99a3;
  font-size: 13px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-contact {
  font-size: 13px;
  line-height: 1.8;
  color: #8a99a3;
}

.footer-contact strong {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: #6b7a85;
}

.footer-bottom a {
  color: #6b7a85;
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ==================== Page Hero ==================== */
.page-hero {
  background: linear-gradient(135deg, #0f2a3f 0%, #1a5b8c 100%);
  color: #fff;
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.page-hero p {
  font-size: 16px;
  color: #c8d3da;
  max-width: 640px;
  position: relative;
}

.breadcrumb {
  font-size: 13px;
  color: #8a99a3;
  margin-bottom: 12px;
  position: relative;
}

.breadcrumb a {
  color: #8a99a3;
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* ==================== Forms (Auth) ==================== */
.auth-wrap {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  background: var(--bg-soft);
  position: relative;
  overflow: hidden;
}

.auth-wrap::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26, 91, 140, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.auth-card {
  background: #fff;
  border-radius: 18px;
  padding: 56px 48px;
  box-shadow: 0 20px 60px rgba(26, 91, 140, 0.1);
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.auth-card h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text);
}

.auth-card .auth-sub {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 32px;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 32px;
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  position: relative;
  transition: color 0.2s ease;
  background: none;
  border: none;
}

.auth-tab.active {
  color: var(--primary);
}

.auth-tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
  background: #fff;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 91, 140, 0.1);
}

.form-input-with-suffix {
  position: relative;
}

.form-input-with-suffix .form-input {
  padding-right: 100px;
}

.form-suffix {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-suffix::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: var(--success);
  color: #fff;
  border-radius: 50%;
  font-size: 10px;
}

.form-hint {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-hint::before {
  content: 'i';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
  font-style: italic;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--text-light);
}

.form-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}

.form-check a {
  color: var(--primary);
}

.btn-block {
  width: 100%;
  padding: 16px;
  font-size: 15px;
}

.auth-footer {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  margin-top: 20px;
}

.auth-footer a {
  color: var(--primary);
  font-weight: 600;
}

/* ==================== CTA ==================== */
.cta-band {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 18px;
  padding: 56px 64px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-band h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
  position: relative;
}

.cta-band p {
  font-size: 15px;
  color: #c8d3da;
  position: relative;
}

.cta-band .actions {
  display: flex;
  gap: 12px;
  position: relative;
}

/* ==================== Trial Page ==================== */
.trial-banner {
  background: linear-gradient(135deg, #0f2a3f 0%, #1a5b8c 100%);
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.trial-banner::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 70% 50%, rgba(255, 107, 53, 0.15) 0%, transparent 60%);
}

.trial-form-card {
  background: #fff;
  border-radius: 18px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  max-width: 560px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.trial-form-card h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.trial-form-card p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 24px;
}

/* ==================== About Page ==================== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content img {
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.value-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 28px;
  text-align: center;
}

.value-card-num {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  font-family: "Inter", sans-serif;
}

.value-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ==================== Download Detail ==================== */
.detail-wrap {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
}

.detail-main {
  background: #fff;
  border-radius: 14px;
  padding: 40px;
  border: 1px solid var(--border);
}

.detail-main h1 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.detail-main p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 16px;
}

.detail-main img {
  border-radius: 8px;
  margin: 20px 0;
}

.detail-side {
  background: #fff;
  border-radius: 14px;
  padding: 28px;
  border: 1px solid var(--border);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.detail-side h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.detail-side .price {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}

.detail-side .price-label {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
}

.detail-side .btn {
  width: 100%;
}

/* ==================== Pay Page ==================== */
.pay-card {
  background: #fff;
  border-radius: 18px;
  padding: 48px;
  max-width: 480px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(26, 91, 140, 0.1);
  text-align: center;
}

.pay-card h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.pay-card .pay-sub {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 32px;
}

.qr-mock {
  width: 220px;
  height: 220px;
  margin: 0 auto 24px;
  background: repeating-linear-gradient(0deg, var(--text), var(--text) 8px, #fff 8px, #fff 16px),
    repeating-linear-gradient(90deg, var(--text), var(--text) 8px, transparent 8px, transparent 16px);
  background-color: #fff;
  background-blend-mode: difference;
  border: 12px solid #fff;
  border-radius: 12px;
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.qr-mock::before,
.qr-mock::after {
  content: '';
  position: absolute;
  width: 50px;
  height: 50px;
  background: #fff;
  border: 8px solid var(--text);
  border-radius: 8px;
}

.qr-mock::before {
  top: 8px;
  left: 8px;
}

.qr-mock::after {
  top: 8px;
  right: 8px;
}

.qr-label {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 8px;
}

.pay-amount {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  margin: 16px 0 24px;
  font-family: "Inter", sans-serif;
}

.pay-tip {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ==================== Mobile ==================== */
@media (max-width: 1024px) {
  .hero .container,
  .about-content,
  .detail-wrap {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .case-grid,
  .value-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-visual {
    height: 360px;
  }

  .section h2 {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hero {
    padding: 60px 0 80px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .section {
    padding: 60px 0;
  }

  .feature-grid,
  .case-grid,
  .value-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section h2 {
    font-size: 26px;
  }

  .cta-band {
    flex-direction: column;
    text-align: center;
    padding: 36px 24px;
  }

  .auth-card {
    padding: 36px 28px;
  }

  .download-item {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .topbar {
    display: none;
  }
}