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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #333;
  background: #fff;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, li {
  list-style: none;
}

img {
  max-width: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
  height: 70px;
  transition: background 0.3s;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #1a73e8;
}

.logo-icon {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.logo-text {
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav > li {
  position: relative;
}

.main-nav > li > a,
.main-nav > li > .nav-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 14px;
  color: #333;
  border-radius: 6px;
  transition: all 0.2s;
  cursor: pointer;
  white-space: nowrap;
  border: none;
  background: none;
  font-family: inherit;
}

.main-nav > li > a:hover,
.main-nav > li > .nav-trigger:hover {
  color: #1a73e8;
  background: #f0f5ff;
}

.nav-trigger .arrow {
  font-size: 10px;
  transition: transform 0.2s;
}

.main-nav > li:hover .arrow {
  transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  padding: 8px;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.main-nav > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: #555;
  border-radius: 8px;
  transition: all 0.2s;
}

.dropdown a:hover {
  background: #f0f5ff;
  color: #1a73e8;
}

.dropdown .dropdown-item-desc {
  font-size: 12px;
  color: #999;
  margin-top: 2px;
}

/* Header buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-lang {
  padding: 6px 12px;
  font-size: 13px;
  color: #666;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  cursor: pointer;
  background: #fff;
  transition: all 0.2s;
  position: relative;
}

.btn-lang:hover {
  border-color: #1a73e8;
  color: #1a73e8;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  padding: 8px;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
  z-index: 100;
}

.btn-lang:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
}

.lang-dropdown a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  color: #555;
  border-radius: 6px;
  transition: all 0.2s;
}

.lang-dropdown a:hover {
  background: #f0f5ff;
  color: #1a73e8;
}

.btn-register {
  padding: 8px 24px;
  font-size: 14px;
  color: #fff;
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s;
}

.btn-register:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(26, 115, 232, 0.4);
}

/* Mobile menu toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: #333;
  border-radius: 2px;
  transition: all 0.3s;
}

/* ========== Hero Section ========== */
.hero {
  padding: 130px 0 70px;
  background: linear-gradient(160deg, #f5f7ff 0%, #edf1ff 40%, #f3f0ff 70%, #f8f6ff 100%);
  position: relative;
  overflow: hidden;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero-content {
  flex: 0 0 420px;
  padding-top: 20px;
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  color: #1a1a2e;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 20px;
  color: #666;
  margin-bottom: 36px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.btn-outline-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 36px;
  font-size: 16px;
  font-weight: 600;
  color: #1a73e8;
  background: #fff;
  border: 2px solid #1a73e8;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
}

.btn-outline-hero:hover {
  background: #f0f5ff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 115, 232, 0.15);
}

.btn-primary-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 36px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #1a73e8, #4a6cf7);
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-primary-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 115, 232, 0.35);
}

.cloud-phone-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: #666;
  transition: all 0.3s;
}

.cloud-phone-link svg {
  color: #1a73e8;
  stroke: #1a73e8;
}

.cloud-phone-link .arrow-right {
  color: #1a73e8;
  font-size: 18px;
  transition: transform 0.3s;
}

.cloud-phone-link:hover {
  color: #1a73e8;
}

.cloud-phone-link:hover .arrow-right {
  transform: translateX(4px);
}

/* Hero right side - scattered cards */
.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
}

.hero-cards-area {
  position: relative;
  width: 100%;
  max-width: 560px;
  height: 380px;
}

.hero-dashed-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero-card {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: rotate(var(--rotate));
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  z-index: 1;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  transition: transform 0.4s, box-shadow 0.4s;
  cursor: default;
}

.hero-card:hover {
  transform: rotate(0deg) scale(1.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
  z-index: 10;
}

.card-fingerprint {
  background: linear-gradient(135deg, #4a6cf7, #6c8cff);
}

.card-script {
  background: linear-gradient(135deg, #28a745, #5cb85c);
}

.card-sync {
  background: linear-gradient(135deg, #6c5ce7, #8b7cf7);
}

.card-api {
  background: linear-gradient(135deg, #f39c12, #f5b041);
}

.card-proxy {
  background: linear-gradient(135deg, #e74c3c, #f1756c);
}

.card-rpa {
  background: linear-gradient(135deg, #e67e22, #f0a04b);
}

/* Shared buttons (used across pages) */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, #1a73e8, #4a6cf7);
  color: #fff;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 115, 232, 0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: #fff;
  color: #1a73e8;
  border: 2px solid #1a73e8;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s;
  cursor: pointer;
}

.btn-secondary:hover {
  background: #f0f5ff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 115, 232, 0.15);
}

/* ========== Tab Features Section ========== */
.tab-features {
  padding: 80px 0;
  background: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-header h2 .gradient-text {
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  font-size: 16px;
  color: #888;
  max-width: 600px;
  margin: 0 auto;
}

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 24px;
  border: 2px solid #e8e8e8;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: #666;
  cursor: pointer;
  transition: all 0.3s;
  background: #fff;
}

.tab-btn:hover,
.tab-btn.active {
  border-color: #1a73e8;
  color: #1a73e8;
  background: #f0f5ff;
}

.tab-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.tab-panel {
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 20px 0;
}

.tab-panel-text {
  flex: 1;
}

.tab-panel-text h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #222;
}

.tab-panel-text p {
  font-size: 15px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 24px;
}

.tab-panel-text .btn-primary {
  padding: 12px 28px;
  font-size: 14px;
}

.tab-panel-visual {
  flex: 1;
  aspect-ratio: 16/10;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
}

.tab-visual-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.tab-visual-bg svg {
  width: 100%;
  height: 100%;
}

.tab-visual-bg.v1 { background: linear-gradient(135deg, #e8f0fe, #d4e4ff); }
.tab-visual-bg.v2 { background: linear-gradient(135deg, #e8ffe8, #d4ffd4); }
.tab-visual-bg.v3 { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.tab-visual-bg.v4 { background: linear-gradient(135deg, #fce4ec, #f8bbd0); }
.tab-visual-bg.v5 { background: linear-gradient(135deg, #e8eaf6, #c5cae9); }
.tab-visual-bg.v6 { background: linear-gradient(135deg, #e0f7fa, #b2ebf2); }

/* ========== Cloud Phone Section ========== */
.cloud-phone {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9ff 0%, #f0f5ff 100%);
}

.cloud-phone-inner {
  display: flex;
  align-items: center;
  gap: 60px;
}

.cloud-phone-visual {
  flex: 1;
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 280px;
  height: 560px;
  background: #1a1a2e;
  border-radius: 44px;
  padding: 4px;
  box-shadow:
    0 30px 60px rgba(26, 115, 232, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 0 4px #1a1a2e;
  position: relative;
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  right: 50px;
  width: 4px;
  height: 40px;
  background: #2a2a3e;
  border-radius: 0 0 2px 2px;
}

.phone-mockup::after {
  content: '';
  position: absolute;
  top: 80px;
  left: 0;
  width: 4px;
  height: 30px;
  background: #2a2a3e;
  border-radius: 2px 0 0 2px;
}

.phone-inner {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, #e8f0fe 0%, #d4e4ff 40%, #e0d6f6 100%);
  border-radius: 40px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-status-bar {
  padding: 14px 22px 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #1a1a2e;
  font-weight: 700;
}

.phone-time {
  width: 50px;
}

.phone-dynamic-island {
  width: 100px;
  height: 28px;
  background: #000;
  border-radius: 20px;
}

.phone-status-icons {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 50px;
  justify-content: flex-end;
}

.phone-content {
  flex: 1;
  padding: 24px 18px 10px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px 10px;
  align-content: start;
}

.phone-app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.phone-app-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.phone-app-name {
  font-size: 10px;
  color: #444;
  font-weight: 500;
  text-align: center;
  max-width: 56px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.phone-dock {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 10px 20px 6px;
  margin: 0 16px;
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(10px);
  border-radius: 20px;
}

.phone-dock-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.phone-home-indicator {
  width: 120px;
  height: 5px;
  background: #333;
  border-radius: 3px;
  margin: 10px auto 8px;
  opacity: 0.3;
}

.cloud-phone-text {
  flex: 1;
}

.cloud-phone-text h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cloud-phone-text h2 .gradient-text {
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cloud-phone-text .subtitle {
  font-size: 16px;
  color: #888;
  margin-bottom: 20px;
}

.cloud-phone-text p {
  font-size: 15px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 28px;
}

/* ========== What is Fingerprint Browser ========== */
.what-fingerprint {
  padding: 80px 0 60px;
  background: #fff;
  overflow: hidden;
}

.what-is {
  margin-bottom: 50px;
}

.wf-title {
  font-size: 32px;
  font-weight: 800;
  color: #1a1a2e;
  margin-bottom: 16px;
  text-align: left;
}

.wf-subtitle {
  font-size: 20px;
  font-weight: 600;
  color: #1a73e8;
  margin-bottom: 16px;
}

.wf-desc {
  font-size: 15px;
  color: #666;
  line-height: 1.9;
  margin-bottom: 16px;
  max-width: 900px;
}

/* Tag cloud with concentric rings */
.tag-cloud {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  padding: 80px 40px;
  margin: 0 auto;
  max-width: 900px;
}

.tag-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(26, 115, 232, 0.08);
  pointer-events: none;
}

.tag-ring1 {
  width: 300px;
  height: 300px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-color: rgba(26, 115, 232, 0.06);
}

.tag-ring2 {
  width: 480px;
  height: 480px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-color: rgba(26, 115, 232, 0.05);
}

.tag-ring3 {
  width: 660px;
  height: 660px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-color: rgba(26, 115, 232, 0.04);
}

.fp-tag {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  background: #fff;
  border: 1px solid #e0e6f0;
  border-radius: 24px;
  font-size: 14px;
  color: #555;
  transition: all 0.3s;
  cursor: pointer;
  position: relative;
  z-index: 1;
}

.fp-tag:hover {
  background: #1a73e8;
  border-color: #1a73e8;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(26, 115, 232, 0.25);
}

/* ========== News Section ========== */
.news-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9ff 0%, #f0f5ff 100%);
}

.news-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 30px;
}

.news-tab-btn {
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  background: #fff;
  color: #666;
}

.news-tab-btn.active {
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  color: #fff;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.news-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  transition: all 0.3s;
  border: 1px solid #f0f0f0;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.news-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: #333;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .news-date {
  font-size: 13px;
  color: #999;
}

.news-more {
  text-align: center;
  margin-top: 30px;
}

.news-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #1a73e8;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
}

.news-more a:hover {
  gap: 10px;
}

/* ========== Cases Section ========== */
.cases-section {
  padding: 80px 0;
  background: #fff;
}

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

.case-card {
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s;
  border: 1px solid #f0f0f0;
  cursor: pointer;
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
}

.case-card-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.case-card-image svg {
  width: 100%;
  height: 100%;
}

.case-card-image.bg1 { background: linear-gradient(135deg, #e8f0fe, #c5d9fc); }
.case-card-image.bg2 { background: linear-gradient(135deg, #fce4ec, #f8bbd0); }
.case-card-image.bg3 { background: linear-gradient(135deg, #e0f7fa, #b2ebf2); }

.case-card-body {
  padding: 20px;
}

.case-card-body h4 {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin-bottom: 8px;
}

.case-card-body p {
  font-size: 13px;
  color: #888;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cases-more {
  text-align: center;
  margin-top: 30px;
}

.cases-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #1a73e8;
  font-size: 15px;
  font-weight: 500;
}

/* ========== Footer ========== */
.site-footer {
  background: #1a1f36;
  color: #ccc;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo .logo-text {
  background: linear-gradient(135deg, #6cb4ff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  font-size: 14px;
  color: #888;
  line-height: 1.7;
}

.footer-brand .service-time {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  font-size: 13px;
}

.footer-brand .service-time strong {
  color: #fff;
  display: block;
  margin-bottom: 4px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: #888;
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: #6cb4ff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: #666;
}

.footer-bottom a {
  font-size: 13px;
  color: #666;
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: #6cb4ff;
}

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

/* ========== Page Banner (for sub pages) ========== */
.page-banner {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, #f0f5ff 0%, #e8eeff 50%, #f5f0ff 100%);
  text-align: center;
}

.page-banner h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 16px;
  color: #888;
}

.page-content {
  padding: 60px 0;
  min-height: 400px;
}

/* ========== Download Page ========== */
.dl-section-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: #1a1a2e;
}

.dl-section-desc {
  text-align: center;
  font-size: 15px;
  color: #666;
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.dl-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 900px;
  margin: 30px auto 0;
}

.dl-card {
  background: #fff;
  border: 2px solid #e8eeff;
  border-radius: 20px;
  padding: 36px 32px;
  text-align: center;
  transition: all 0.3s;
}

.dl-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(26, 115, 232, 0.1);
  border-color: #1a73e8;
}

.dl-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
}

.dl-card-icon svg {
  width: 100%;
  height: 100%;
}

.dl-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #1a1a2e;
}

.dl-version {
  font-size: 13px;
  color: #1a73e8;
  margin-bottom: 4px;
}

.dl-size {
  font-size: 13px;
  color: #999;
  margin-bottom: 16px;
}

.dl-sys-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  text-align: left;
}

.dl-sys-list li {
  font-size: 13px;
  color: #666;
  padding: 6px 0;
  border-bottom: 1px solid #f5f5f5;
  padding-left: 20px;
  position: relative;
}

.dl-sys-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #28a745;
  font-weight: 700;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  justify-content: center;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
}

.dl-note {
  font-size: 12px;
  color: #aaa;
  margin-top: 12px;
}

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

.dl-feature {
  background: #fff;
  border: 1px solid #e8eeff;
  border-radius: 16px;
  padding: 28px 24px;
  transition: all 0.3s;
}

.dl-feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}

.dl-feature-icon {
  width: 52px;
  height: 52px;
  background: #f0f5ff;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.dl-feature h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #222;
}

.dl-feature p {
  font-size: 13px;
  color: #888;
  line-height: 1.7;
}

.dl-req-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}

.dl-req-card {
  background: #f8f9ff;
  border: 1px solid #e8eeff;
  border-radius: 16px;
  padding: 32px;
}

.dl-req-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #1a1a2e;
}

.dl-req-table {
  width: 100%;
  border-collapse: collapse;
}

.dl-req-table td {
  padding: 10px 0;
  font-size: 14px;
  border-bottom: 1px solid #eee;
}

.dl-req-table td:first-child {
  color: #555;
  font-weight: 600;
  width: 90px;
}

.dl-req-table td:last-child {
  color: #888;
}

.dl-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.dl-step {
  flex: 1;
  min-width: 180px;
  max-width: 220px;
  text-align: center;
}

.dl-step-num {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  margin: 0 auto 14px;
}

.dl-step h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #222;
}

.dl-step p {
  font-size: 13px;
  color: #888;
  line-height: 1.6;
}

.dl-step-arrow {
  display: flex;
  align-items: center;
  padding-top: 12px;
}

.dl-faq {
  max-width: 800px;
  margin: 30px auto 0;
}

.dl-faq-item {
  border: 1px solid #e8eeff;
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s;
}

.dl-faq-item[open] {
  border-color: #1a73e8;
  box-shadow: 0 4px 15px rgba(26, 115, 232, 0.08);
}

.dl-faq-item summary {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  color: #222;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dl-faq-item summary::-webkit-details-marker {
  display: none;
}

.dl-faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: #1a73e8;
  font-weight: 300;
  transition: transform 0.3s;
}

.dl-faq-item[open] summary::after {
  content: '−';
}

.dl-faq-item p {
  padding: 0 24px 18px;
  font-size: 14px;
  color: #666;
  line-height: 1.8;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    flex: none;
    width: 100%;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .cloud-phone-link {
    justify-content: center;
  }

  .hero-image {
    width: 100%;
    max-width: 560px;
  }

  .hero-cards-area {
    height: 320px;
  }

  .hero-card {
    padding: 12px 22px;
    font-size: 14px;
  }

  .tab-panel {
    flex-direction: column;
  }

  .cloud-phone-inner {
    flex-direction: column;
  }

  .tag-cloud {
    padding: 60px 20px;
  }

  .dl-cards {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

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

  .dl-req-grid {
    grid-template-columns: 1fr;
  }

  .dl-step-arrow {
    display: none;
  }

  .dl-steps {
    gap: 24px;
  }

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

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

  .mobile-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    border-radius: 0 0 16px 16px;
  }

  .main-nav.open .dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    padding: 0 0 0 16px;
    opacity: 1;
    visibility: visible;
  }

  .hero {
    padding: 110px 0 50px;
  }

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

  .hero-desc {
    font-size: 16px;
  }

  .hero-cards-area {
    height: 280px;
    max-width: 400px;
  }

  .hero-card {
    padding: 10px 18px;
    font-size: 13px;
  }

  .dl-features {
    grid-template-columns: 1fr;
  }

  .dl-section-title {
    font-size: 22px;
  }

  .section-header h2 {
    font-size: 28px;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .btn-lang {
    display: none;
  }
}