/* ============================================
   Flash API Landing Page - Style System
   Design: Clean Editorial / White + Orange
   ============================================ */

/* --- Font Faces --- */
@font-face {
  font-family: 'Clash Display';
  src: url('../fonts/ClashDisplay-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Clash Display';
  src: url('../fonts/ClashDisplay-Semibold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Clash Display';
  src: url('../fonts/ClashDisplay-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../fonts/PlusJakartaSans-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../fonts/PlusJakartaSans-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../fonts/PlusJakartaSans-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../fonts/PlusJakartaSans-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Orbitron';
  src: url('../fonts/Orbitron-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Orbitron';
  src: url('../fonts/Orbitron-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* --- CSS Custom Properties --- */
:root {
  --white: #FFFFFF;
  --off-white: #F8FAFC;
  --warm-bg: #F7F9FC;
  --warm-bg-alt: #EEF3F8;

  --text-primary: #0A0A0A;
  --text-secondary: #3D3D3D;
  --text-tertiary: #6B6B6B;
  --text-muted: #9A9A9A;

  --border: #E4EAF2;
  --border-light: #EDF2F7;
  --border-bold: #0A0A0A;

  --orange: #FF8A1F;
  --orange-hover: #E56F00;
  --orange-light: #FFF4E8;
  --orange-glow: rgba(255, 138, 31, 0.14);

  --green: #1A9F4A;
  --green-bg: #EDFBF2;

  --code-bg: #1A1A1E;
  --code-text: #E8E8E8;
  --code-comment: #6B7280;
  --code-string: #FFB86C;
  --code-keyword: #FF79C6;

  --font-logo: 'Orbitron', 'Clash Display', system-ui, sans-serif;
  --font-display: 'Clash Display', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-code: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-orange: 0 8px 28px rgba(255, 138, 31, 0.22);

  --container: 1180px;
  --section-padding: 120px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--white);
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* --- Utilities --- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section-label {
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--orange);
  display: inline-block;
}
.section-title {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-tertiary);
  max-width: 640px;
}
.section-header {
  margin-bottom: 56px;
}

/* --- Scroll Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================
   Announcement Bar
   ============================ */
.announcement-bar {
  background: #141B24;
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  padding: 9px 24px;
  letter-spacing: 0.2px;
  position: relative;
  z-index: 100;
}
.announcement-bar strong {
  color: var(--orange);
}
.announcement-bar a {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================
   Navigation
   ============================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.nav.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-logo);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.nav-brand img {
  width: 28px;
  height: 28px;
}
.nav-brand span {
  background: linear-gradient(135deg, var(--orange) 0%, #FFB25B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-tertiary);
  transition: color 0.2s;
  position: relative;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--orange);
  border-radius: 1px;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn-lang {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.btn-lang:hover { border-color: var(--text-primary); color: var(--text-primary); }
.btn-contact-nav {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-tertiary);
  transition: color 0.2s;
}
.btn-contact-nav:hover { color: var(--text-primary); }
.btn-console {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  background: var(--orange);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  transition: background 0.2s, box-shadow 0.2s;
}
.btn-console:hover {
  background: var(--orange-hover);
  box-shadow: var(--shadow-orange);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
}
.nav-toggle span {
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: 0.3s;
}

/* ============================
   Hero Section
   ============================ */
.hero {
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
  background: var(--white);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.5;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--orange-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-code);
  font-size: 13px;
  font-weight: 500;
  color: var(--orange);
  background: var(--orange-light);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}
.hero-tag .dot {
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-title {
  font-family: var(--font-display);
  font-size: 68px;
  font-weight: 700;
  line-height: 1.08;
  color: var(--text-primary);
  letter-spacing: -1.5px;
  margin-bottom: 28px;
  max-width: 800px;
}
.hero-title .highlight {
  color: var(--orange);
  position: relative;
}
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 0.85em;
  background: var(--orange);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: blink-cursor 0.8s step-end infinite;
}
@keyframes blink-cursor {
  50% { opacity: 0; }
}
.hero-subtitle {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-tertiary);
  max-width: 560px;
  margin-bottom: 40px;
}
.hero-subtitle strong {
  color: var(--text-secondary);
  font-weight: 600;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  background: var(--orange);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  transition: all 0.25s;
}
.btn-primary:hover {
  background: var(--orange-hover);
  box-shadow: var(--shadow-orange);
  transform: translateY(-1px);
}
.btn-primary svg { width: 16px; height: 16px; }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--white);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
  transition: all 0.25s;
}
.btn-secondary:hover {
  border-color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* Hero Grid - two column layout */
.hero-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.hero-content {
  flex: 1;
  max-width: 640px;
}

/* Hero Stats - right column */
.hero-stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-shrink: 0;
}
.stat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  min-width: 240px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.stat-card:hover {
  border-color: var(--orange);
  box-shadow: 0 4px 20px var(--orange-glow);
}
.stat-icon {
  width: 44px;
  height: 44px;
  background: var(--orange-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  flex-shrink: 0;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.stat-number .unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-left: 2px;
}
.stat-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================
   Price Advantage / Bridge
   ============================ */
.pricing {
  padding: var(--section-padding) 0;
  background: var(--warm-bg);
  position: relative;
}
.bridge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 48px 40px;
  position: relative;
  margin-top: 8px;
  border: 1px solid rgba(255, 138, 31, 0.12);
  border-radius: 32px;
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 138, 31, 0.10) 0%, rgba(255, 138, 31, 0.04) 18%, transparent 42%),
    linear-gradient(180deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.88) 100%);
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.06);
  overflow: hidden;
}
.bridge::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(228, 234, 242, 0.65) 1px, transparent 1px),
    linear-gradient(90deg, rgba(228, 234, 242, 0.65) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, rgba(0,0,0,0.7), transparent 88%);
  pointer-events: none;
}
.bridge::after {
  content: '';
  position: absolute;
  inset: auto -10% -45% auto;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 178, 91, 0.2) 0%, transparent 70%);
  pointer-events: none;
}
.bridge-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  position: relative;
  z-index: 2;
}
.bridge-providers {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.bridge-node {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(228, 234, 242, 0.95);
  border-radius: 20px;
  padding: 16px 20px;
  min-width: 210px;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.bridge-node:hover {
  border-color: rgba(255, 138, 31, 0.32);
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.08);
  transform: translateX(-6px);
}
.bridge-node img {
  width: 30px;
  height: 30px;
}
.bridge-node .node-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.2;
}
.bridge-node .node-vendor {
  font-size: 12px;
  color: var(--text-muted);
}

/* Center hub */
.bridge-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  z-index: 3;
  position: relative;
}
.bridge-hub {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--orange) 0%, #FFB25B 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 30px rgba(255, 138, 31, 0.22), 0 0 0 8px rgba(255, 244, 232, 0.95);
  position: relative;
  animation: hub-glow 3s ease-in-out infinite;
}
.bridge-hub::before,
.bridge-hub::after {
  content: '';
  position: absolute;
  inset: 50%;
  transform: translate(-50%, -50%);
  border-radius: 28px;
  pointer-events: none;
}
.bridge-hub::before {
  width: 92px;
  height: 92px;
  border: 1px solid rgba(255, 138, 31, 0.18);
}
.bridge-hub::after {
  width: 122px;
  height: 122px;
  border: 1px dashed rgba(255, 138, 31, 0.16);
}
@keyframes hub-glow {
  0%, 100% { box-shadow: 0 12px 28px rgba(255,138,31,0.18), 0 0 0 8px rgba(255,244,232,0.9); }
  50% { box-shadow: 0 18px 40px rgba(255,138,31,0.28), 0 0 0 10px rgba(255,244,232,1); }
}
.bridge-hub img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}
.bridge-hub-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

/* Connection lines */
.bridge-line {
  width: 104px;
  height: 14px;
  position: relative;
  z-index: 1;
  overflow: hidden;
}
.bridge-line::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 200%;
  height: 2px;
  transform: translateY(-50%);
  background: linear-gradient(90deg, transparent 0%, rgba(255, 138, 31, 0.42) 12%, rgba(255, 138, 31, 0.92) 50%, rgba(255, 138, 31, 0.42) 88%, transparent 100%);
}
.bridge-line::after {
  content: '';
  position: absolute;
  top: 50%;
  left: -20%;
  width: 36px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.9), rgba(255,255,255,0));
  transform: translateY(-50%);
  filter: blur(0.2px);
  animation: flow-line 1.6s linear infinite;
}
@keyframes flow-line {
  0% { transform: translate(-10%, -50%); }
  100% { transform: translate(300%, -50%); }
}
.bridge-line-reverse::before {
  transform: translateY(-50%) scaleX(-1);
}
.bridge-line-reverse::after {
  animation-direction: reverse;
}

/* User side */
.bridge-user {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(10, 10, 10, 0.08);
  border-radius: 22px;
  padding: 18px 22px;
  min-width: 220px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}
.bridge-user-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(180deg, #111827 0%, #253041 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
}
.bridge-user .node-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
}
.bridge-user .node-vendor {
  font-size: 12px;
  color: var(--text-muted);
}

/* Cost chips */
.cost-chips {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.cost-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(228, 234, 242, 0.95);
  border-radius: 100px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.04);
}
.cost-chip img { width: 20px; height: 20px; }
.cost-chip .cost-val {
  font-weight: 700;
  color: var(--orange);
}

/* ============================
   Quick Setup / CLI
   ============================ */
.setup {
  padding: var(--section-padding) 0;
  background: var(--white);
}
.cli-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cli-card {
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.cli-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.cli-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.cli-card-header img {
  width: 22px;
  height: 22px;
  border-radius: 4px;
}
.cli-card-header .cli-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--code-text);
  flex: 1;
}
.cli-dots {
  display: flex;
  gap: 6px;
}
.cli-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  opacity: 0.4;
}
.cli-dots span:nth-child(1) { background: #FF5F56; }
.cli-dots span:nth-child(2) { background: #FFBD2E; }
.cli-dots span:nth-child(3) { background: #27C93F; }
.cli-card-body {
  padding: 20px;
  position: relative;
}
.cli-prompt {
  font-family: var(--font-code);
  font-size: 13px;
  line-height: 1.8;
  color: var(--code-text);
  word-break: break-all;
  padding-right: 44px;
  text-align: left;
}
.cli-prompt .cmd-prefix {
  color: var(--code-comment);
}
.cli-prompt .cmd-url {
  color: var(--code-string);
}
.cli-prompt .cmd-pipe {
  color: var(--code-keyword);
}
.btn-copy {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--code-text);
  transition: all 0.2s;
}
.btn-copy:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.2);
}
.btn-copy.copied {
  background: rgba(39, 201, 63, 0.15);
  border-color: rgba(39, 201, 63, 0.3);
  color: #27C93F;
}

/* ============================
   Model Channels
   ============================ */
.channels {
  padding: var(--section-padding) 0;
  background: var(--warm-bg);
}
.channel-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.filter-pill {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 8px 20px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.filter-pill img { width: 16px; height: 16px; }
.filter-pill:hover {
  border-color: var(--text-muted);
  color: var(--text-secondary);
}
.filter-pill.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--white);
}
.channel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.channel-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.channel-card:hover {
  border-color: var(--orange);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.channel-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}
.channel-provider {
  display: flex;
  align-items: center;
  gap: 8px;
}
.channel-provider img { width: 24px; height: 24px; }
.channel-provider-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.channel-status {
  font-size: 12px;
  font-weight: 600;
  color: var(--green);
  background: var(--green-bg);
  padding: 4px 12px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.channel-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
}
.channel-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.channel-desc {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}
.channel-ratio {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--orange-light);
  border-radius: 14px;
  padding: 12px 16px;
  margin-bottom: 18px;
  font-size: 13px;
  flex-wrap: wrap;
}
.channel-ratio .ratio-label {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.channel-ratio .ratio-value {
  font-family: var(--font-code);
  font-weight: 800;
  color: var(--orange);
  font-size: 24px;
  line-height: 1;
  letter-spacing: -0.04em;
}
.channel-ratio .ratio-note {
  color: var(--text-tertiary);
  font-size: 12px;
  width: 100%;
}
.channel-models {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}
.model-tag {
  font-family: var(--font-code);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--off-white);
  border: 1px solid var(--border-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}
.model-tag.more {
  color: var(--orange);
  background: var(--orange-light);
  border-color: transparent;
  font-weight: 600;
}
.channel-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}
.feature-badge {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  padding: 4px 10px;
  background: var(--off-white);
  border-radius: var(--radius-sm);
}
.feature-badge.warning {
  color: #C05600;
  background: #FFF1E2;
}

/* ============================
   Core Advantages
   ============================ */
.advantages {
  padding: var(--section-padding) 0;
  background: var(--white);
}
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.adv-card {
  border: 2px solid var(--border-bold);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.adv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.adv-card:hover::before { opacity: 1; }
.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.adv-icon {
  width: 52px;
  height: 52px;
  background: var(--orange-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  margin-bottom: 20px;
  font-size: 24px;
}
.adv-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.adv-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-tertiary);
}

/* ============================
   FAQ
   ============================ */
.faq {
  padding: var(--section-padding) 0;
  background: var(--warm-bg);
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 24px 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--orange); }
.faq-icon {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s;
}
.faq-item.open .faq-icon {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.4s;
}
.faq-item.open .faq-answer {
  max-height: 200px;
}
.faq-answer-inner {
  padding-bottom: 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-tertiary);
}

/* ============================
   CTA Section
   ============================ */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(180deg, #FBFCFE 0%, #F5F8FC 100%);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(228, 234, 242, 0.7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(228, 234, 242, 0.7) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(circle at center, rgba(0,0,0,0.88), transparent 88%);
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  height: 380px;
  background: radial-gradient(ellipse, rgba(255,138,31,0.16) 0%, rgba(255,178,91,0.08) 34%, transparent 72%);
  pointer-events: none;
}
.cta-inner {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
  padding: 56px 40px;
  border: 1px solid rgba(255, 138, 31, 0.12);
  border-radius: 32px;
  background: rgba(255,255,255,0.78);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.cta-title {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-subtitle {
  font-size: 17px;
  color: var(--text-tertiary);
  margin-bottom: 40px;
}
.btn-cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  background: var(--orange);
  padding: 16px 40px;
  border-radius: var(--radius-md);
  transition: all 0.25s;
}
.btn-cta-primary:hover {
  background: var(--orange-hover);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

/* ============================
   Footer
   ============================ */
.footer {
  padding: 64px 0 0;
  background: var(--text-primary);
  color: rgba(255,255,255,0.55);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-logo);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.footer-brand-text img { width: 24px; height: 24px; }
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  max-width: 280px;
}
.footer-col-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 20px;
}
.footer-links li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 10px;
}
.footer-contact-item img { width: 18px; height: 18px; opacity: 0.6; }
.footer-compliance {
  padding: 18px 0 0;
  margin-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }
  .hero-title { font-size: 52px; }
  .section-title { font-size: 36px; }
  .channel-grid { grid-template-columns: 1fr; }
  .bridge { flex-wrap: wrap; gap: 24px; }
  .bridge-line { width: 40px; }
  .cli-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
  }
  .nav-links { display: none; }
  .btn-console { display: none; }
  .nav-actions { gap: 10px; }
  .nav-toggle { display: flex; }
  .btn-contact-nav {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
  }

  /* Mobile menu */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
  }

  .hero { padding: 60px 0; }
  .hero-grid { flex-direction: column; gap: 32px; }
  .hero-content { max-width: 100%; }
  .hero-title {
    font-size: 36px;
    letter-spacing: -0.5px;
  }
  .hero-stats { flex-direction: row; flex-wrap: wrap; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions {
    flex-direction: row;
    align-items: center;
    width: 100%;
    gap: 12px;
  }
  .btn-primary,
  .btn-secondary {
    flex: 1 1 0;
    justify-content: center;
    min-width: 0;
    padding: 14px 18px;
  }
  .hero-stats {
    flex-direction: row;
    gap: 12px;
    width: 100%;
  }
  .stat-card {
    min-width: 0;
    width: calc(50% - 6px);
    padding: 18px 16px;
    gap: 12px;
  }
  .stat-icon {
    width: 40px;
    height: 40px;
  }
  .stat-number {
    font-size: 24px;
  }
  .stat-desc {
    font-size: 12px;
  }

  .section-title { font-size: 30px; }
  .section-header { margin-bottom: 40px; }

  .channel-filters {
    gap: 10px;
    margin-bottom: 28px;
  }
  .filter-pill {
    min-height: 40px;
    padding: 8px 16px;
  }
  .channel-card,
  .adv-card {
    padding: 22px;
  }

  .bridge {
    display: none;
  }

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

  .cta-title { font-size: 32px; }
  .cta-inner {
    padding: 44px 28px;
    border-radius: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-compliance {
    text-align: left;
  }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

  .nav-inner {
    height: 60px;
  }

  .nav-links.open {
    top: 60px;
    padding: 18px;
  }

  .hero {
    padding: 48px 0 56px;
  }

  .hero-tag {
    margin-bottom: 24px;
  }

  .hero-title {
    font-size: 31px;
    line-height: 1.12;
    margin-bottom: 20px;
  }

  .hero-subtitle {
    font-size: 15px;
    line-height: 1.75;
    margin-bottom: 28px;
  }

  .hero-actions {
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 13px 14px;
    font-size: 14px;
  }

  .hero-stats {
    gap: 10px;
  }

  .stat-card {
    width: calc(50% - 5px);
    padding: 14px 12px;
    gap: 10px;
    border-radius: 14px;
  }

  .stat-icon {
    width: 34px;
    height: 34px;
  }

  .stat-number {
    font-size: 20px;
  }

  .stat-number .unit {
    font-size: 13px;
  }

  .stat-desc {
    font-size: 11px;
    line-height: 1.4;
  }

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

  .section-subtitle {
    font-size: 15px;
    line-height: 1.75;
  }

  .btn-contact-nav {
    font-size: 12px;
  }

  .channel-ratio {
    padding: 10px 14px;
  }

  .channel-ratio .ratio-value {
    font-size: 21px;
  }

  .cost-chips {
    gap: 12px;
  }

  .cost-chip {
    width: 100%;
    justify-content: center;
  }

  .channel-filters {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .channel-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-pill {
    flex: 0 0 auto;
  }

  .cli-card-body,
  .channel-card,
  .adv-card {
    padding: 18px;
  }

  .faq-question {
    font-size: 16px;
    gap: 16px;
  }

  .cta-title {
    font-size: 28px;
  }
  .cta-inner {
    padding: 36px 20px;
    border-radius: 24px;
  }
  .cta-subtitle {
    font-size: 15px;
    margin-bottom: 28px;
  }
  .btn-cta-primary {
    width: 100%;
    justify-content: center;
    padding: 14px 18px;
  }
}