/* ============================================
   海角网 (HaiWang) - 深海探索科幻风主样式表
   CSS前缀: hw-
   Mobile-First Responsive Design
   断点: 320px, 768px, 1024px, 1440px
   ============================================ */

/* --- Google Fonts 本地化替代：使用系统字体栈 --- */
@font-face {
  font-family: 'HW-Title';
  src: local('Exo 2'), local('Orbitron'), local('Arial Black'), local('Helvetica Neue Bold');
  font-display: swap;
}

/* --- CSS Variables --- */
:root {
  --hw-deep-blue: #0A1931;
  --hw-dark-blue: #0D2137;
  --hw-mid-blue: #132D46;
  --hw-bio-cyan: #4FFBDF;
  --hw-sub-yellow: #F8E9A1;
  --hw-text-primary: #E0E8F0;
  --hw-text-secondary: #8BA3B8;
  --hw-glass-bg: rgba(10, 25, 49, 0.75);
  --hw-glass-border: rgba(79, 251, 223, 0.15);
  --hw-card-bg: rgba(13, 33, 55, 0.85);
  --hw-radius: 12px;
  --hw-radius-sm: 8px;
  --hw-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --hw-glow-cyan: 0 0 20px rgba(79, 251, 223, 0.3);
  --hw-transition: 0.3s ease;
  --hw-font-title: 'Exo 2', 'Orbitron', 'HW-Title', 'Arial Black', sans-serif;
  --hw-font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --hw-font-mono: 'Courier New', 'Consolas', monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--hw-font-body);
  background-color: var(--hw-deep-blue);
  color: var(--hw-text-primary);
  line-height: 1.8;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  color: var(--hw-bio-cyan);
  text-decoration: none;
  transition: color var(--hw-transition);
}

a:hover {
  color: var(--hw-sub-yellow);
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* --- 全局背景粒子层 --- */
#hw-particle-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(79, 251, 223, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(248, 233, 161, 0.02) 0%, transparent 50%),
    linear-gradient(180deg, #0A1931 0%, #0D2137 50%, #0A1931 100%);
}

/* --- 气泡动画 --- */
@keyframes hw-bubble-rise {
  0% { transform: translateY(100vh) scale(0.3); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.2; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.hw-bubble {
  position: fixed;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(79, 251, 223, 0.3), transparent);
  border: 1px solid rgba(79, 251, 223, 0.1);
  pointer-events: none;
  z-index: 0;
}

.hw-bubble:nth-child(1) { width: 8px; height: 8px; left: 10%; animation: hw-bubble-rise 12s infinite 0s; }
.hw-bubble:nth-child(2) { width: 12px; height: 12px; left: 25%; animation: hw-bubble-rise 15s infinite 2s; }
.hw-bubble:nth-child(3) { width: 6px; height: 6px; left: 45%; animation: hw-bubble-rise 10s infinite 4s; }
.hw-bubble:nth-child(4) { width: 10px; height: 10px; left: 65%; animation: hw-bubble-rise 14s infinite 1s; }
.hw-bubble:nth-child(5) { width: 7px; height: 7px; left: 80%; animation: hw-bubble-rise 11s infinite 3s; }
.hw-bubble:nth-child(6) { width: 14px; height: 14px; left: 90%; animation: hw-bubble-rise 16s infinite 5s; }

/* --- 声纳扫描线动画 --- */
@keyframes hw-sonar-sweep {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes hw-pulse-glow {
  0%, 100% { box-shadow: 0 0 5px rgba(79, 251, 223, 0.3); }
  50% { box-shadow: 0 0 20px rgba(79, 251, 223, 0.6); }
}

@keyframes hw-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes hw-scan-line {
  0% { top: -2px; }
  100% { top: 100%; }
}

@keyframes hw-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes hw-glow-border {
  0%, 100% { border-color: rgba(79, 251, 223, 0.3); box-shadow: 0 0 10px rgba(79, 251, 223, 0.1); }
  50% { border-color: rgba(79, 251, 223, 0.7); box-shadow: 0 0 25px rgba(79, 251, 223, 0.3); }
}

@keyframes hw-progress-bar {
  0% { width: 0%; }
  100% { width: 100%; }
}

@keyframes hw-data-stream {
  0% { background-position: 0% 0%; }
  100% { background-position: 0% 100%; }
}

/* ============================================
   导航栏 - 潜水器舷窗风格
   ============================================ */
#hw-navbar {
  position: relative;
  width: 100%;
  z-index: 1000;
  background: var(--hw-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--hw-glass-border);
}

.hw-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  max-width: 1440px;
  margin: 0 auto;
}

.hw-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--hw-font-title);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--hw-bio-cyan);
  text-shadow: 0 0 10px rgba(79, 251, 223, 0.4);
  white-space: nowrap;
}

.hw-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--hw-bio-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  animation: hw-pulse-glow 3s infinite;
}

.hw-nav-links {
  display: none;
  gap: 4px;
}

.hw-nav-link {
  color: var(--hw-text-primary);
  padding: 8px 14px;
  border-radius: var(--hw-radius-sm);
  font-size: 0.9rem;
  transition: all var(--hw-transition);
  position: relative;
  white-space: nowrap;
}

.hw-nav-link:hover,
.hw-nav-link.hw-active {
  color: var(--hw-bio-cyan);
  background: rgba(79, 251, 223, 0.08);
}

.hw-nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hw-search-box {
  display: none;
  align-items: center;
  background: rgba(79, 251, 223, 0.06);
  border: 1px solid var(--hw-glass-border);
  border-radius: 20px;
  padding: 6px 14px;
  gap: 8px;
}

.hw-search-input {
  background: transparent;
  border: none;
  color: var(--hw-text-primary);
  font-size: 0.85rem;
  width: 140px;
  outline: none;
}

.hw-search-input::placeholder {
  color: var(--hw-text-secondary);
}

.hw-btn-login {
  display: none;
  padding: 7px 16px;
  background: linear-gradient(135deg, rgba(79, 251, 223, 0.15), rgba(79, 251, 223, 0.05));
  border: 1px solid rgba(79, 251, 223, 0.3);
  border-radius: 20px;
  color: var(--hw-bio-cyan);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--hw-transition);
  white-space: nowrap;
}

.hw-btn-login:hover {
  background: rgba(79, 251, 223, 0.2);
  box-shadow: var(--hw-glow-cyan);
}

/* 汉堡菜单 */
.hw-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hw-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--hw-bio-cyan);
  border-radius: 2px;
  transition: all var(--hw-transition);
}

.hw-hamburger.hw-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hw-hamburger.hw-open span:nth-child(2) { opacity: 0; }
.hw-hamburger.hw-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 移动端菜单 */
.hw-mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: var(--hw-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--hw-glass-border);
  padding: 16px;
  flex-direction: column;
  gap: 4px;
}

.hw-mobile-menu.hw-show {
  display: flex;
}

.hw-mobile-menu .hw-nav-link {
  padding: 12px 16px;
  font-size: 1rem;
}

/* ============================================
   通用容器
   ============================================ */
.hw-container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 16px;
}

.hw-section {
  padding: 48px 0;
  position: relative;
}

.hw-section-title {
  font-family: var(--hw-font-title);
  font-size: 1.5rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 8px;
  text-shadow: 0 0 10px rgba(79, 251, 223, 0.2);
}

.hw-section-subtitle {
  color: var(--hw-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.hw-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--hw-bio-cyan), transparent);
  margin: 16px 0 24px;
}

/* ============================================
   Hero Banner 轮播
   ============================================ */
#hw-hero {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 400px;
  overflow: hidden;
}

.hw-hero-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.hw-hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hw-hero-slide.hw-active {
  opacity: 1;
}

.hw-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5);
}

.hw-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 20px;
  max-width: 700px;
}

.hw-hero-tag {
  display: inline-block;
  padding: 4px 16px;
  background: rgba(79, 251, 223, 0.15);
  border: 1px solid rgba(79, 251, 223, 0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 16px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hw-hero-title {
  font-family: var(--hw-font-title);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hw-hero-desc {
  font-size: 1rem;
  color: var(--hw-text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.hw-hero-btn {
  display: inline-block;
  padding: 12px 32px;
  background: linear-gradient(135deg, rgba(79, 251, 223, 0.2), rgba(79, 251, 223, 0.05));
  border: 1px solid var(--hw-bio-cyan);
  border-radius: 30px;
  color: var(--hw-bio-cyan);
  font-size: 0.95rem;
  font-family: var(--hw-font-title);
  letter-spacing: 1px;
  transition: all var(--hw-transition);
  cursor: pointer;
}

.hw-hero-btn:hover {
  background: rgba(79, 251, 223, 0.25);
  box-shadow: var(--hw-glow-cyan);
  color: #fff;
}

.hw-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(to top, var(--hw-deep-blue), transparent);
  z-index: 1;
}

.hw-hero-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}

.hw-hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all var(--hw-transition);
}

.hw-hero-dot.hw-active {
  background: var(--hw-bio-cyan);
  box-shadow: 0 0 8px rgba(79, 251, 223, 0.5);
}

/* ============================================
   卡片系统
   ============================================ */
.hw-card {
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius);
  padding: 24px;
  transition: all var(--hw-transition);
}

.hw-card:hover {
  border-color: rgba(79, 251, 223, 0.3);
  box-shadow: var(--hw-glow-cyan);
  transform: translateY(-2px);
}

.hw-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

/* ============================================
   视频区域
   ============================================ */
.hw-video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.hw-video-card {
  position: relative;
  border-radius: var(--hw-radius);
  overflow: hidden;
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-glass-border);
}

.hw-video-player {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  display: block;
}

.hw-video-info {
  padding: 16px;
}

.hw-video-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.hw-video-meta {
  font-size: 0.8rem;
  color: var(--hw-text-secondary);
}

/* ============================================
   科考任务简报
   ============================================ */
.hw-mission-card {
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius);
  padding: 20px;
  font-family: var(--hw-font-mono);
  position: relative;
  overflow: hidden;
}

.hw-mission-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--hw-bio-cyan);
}

.hw-mission-code {
  font-size: 0.8rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.hw-mission-name {
  font-family: var(--hw-font-body);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.hw-mission-data {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--hw-text-secondary);
}

.hw-mission-status {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-family: var(--hw-font-body);
}

.hw-status-active {
  background: rgba(79, 251, 223, 0.15);
  color: var(--hw-bio-cyan);
  border: 1px solid rgba(79, 251, 223, 0.3);
}

.hw-status-pending {
  background: rgba(248, 233, 161, 0.15);
  color: var(--hw-sub-yellow);
  border: 1px solid rgba(248, 233, 161, 0.3);
}

.hw-status-complete {
  background: rgba(100, 200, 100, 0.15);
  color: #7ddf7d;
  border: 1px solid rgba(100, 200, 100, 0.3);
}

/* ============================================
   声纳/信号追踪
   ============================================ */
.hw-sonar-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.hw-sonar-radar {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 2px solid rgba(79, 251, 223, 0.3);
  position: relative;
  background: radial-gradient(circle, rgba(79, 251, 223, 0.05) 0%, transparent 70%);
  overflow: hidden;
}

.hw-sonar-sweep {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--hw-bio-cyan), transparent);
  transform-origin: left center;
  animation: hw-sonar-sweep 4s linear infinite;
}

.hw-sonar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(79, 251, 223, 0.15);
}

.hw-sonar-ring:nth-child(2) { width: 33%; height: 33%; top: 33.5%; left: 33.5%; }
.hw-sonar-ring:nth-child(3) { width: 66%; height: 66%; top: 17%; left: 17%; }

.hw-sonar-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hw-bio-cyan);
  box-shadow: 0 0 8px var(--hw-bio-cyan);
  animation: hw-pulse-glow 2s infinite;
}

.hw-signal-data {
  width: 100%;
}

.hw-signal-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(79, 251, 223, 0.08);
  font-size: 0.9rem;
}

.hw-signal-label {
  color: var(--hw-text-secondary);
}

.hw-signal-value {
  color: var(--hw-bio-cyan);
  font-family: var(--hw-font-mono);
}

/* ============================================
   深海档案
   ============================================ */
.hw-archive-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hw-archive-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius);
  overflow: hidden;
  transition: all var(--hw-transition);
}

.hw-archive-item:hover {
  border-color: rgba(79, 251, 223, 0.3);
}

.hw-archive-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  filter: brightness(0.8) saturate(1.2);
}

.hw-archive-body {
  padding: 16px 20px 20px;
}

.hw-archive-date {
  font-size: 0.8rem;
  color: var(--hw-bio-cyan);
  font-family: var(--hw-font-mono);
  margin-bottom: 8px;
}

.hw-archive-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.hw-archive-excerpt {
  font-size: 0.9rem;
  color: var(--hw-text-secondary);
  line-height: 1.7;
}

/* ============================================
   热泉直播模拟
   ============================================ */
.hw-livestream-container {
  position: relative;
  border-radius: var(--hw-radius);
  overflow: hidden;
  border: 1px solid var(--hw-glass-border);
  background: #000;
}

.hw-livestream-video {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
}

.hw-livestream-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, transparent 30%, transparent 70%, rgba(0,0,0,0.5) 100%);
}

.hw-livestream-hud {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hw-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(255, 50, 50, 0.8);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  width: fit-content;
}

.hw-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  animation: hw-flicker 1s infinite;
}

.hw-live-info {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.8);
  font-family: var(--hw-font-mono);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

/* ============================================
   数据监控台
   ============================================ */
.hw-dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.hw-gauge-card {
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius);
  padding: 20px;
  text-align: center;
}

.hw-gauge-label {
  font-size: 0.85rem;
  color: var(--hw-text-secondary);
  margin-bottom: 12px;
}

.hw-gauge-value {
  font-family: var(--hw-font-title);
  font-size: 2rem;
  color: var(--hw-bio-cyan);
  text-shadow: 0 0 10px rgba(79, 251, 223, 0.3);
}

.hw-gauge-unit {
  font-size: 0.9rem;
  color: var(--hw-text-secondary);
  margin-left: 4px;
}

.hw-gauge-bar {
  width: 100%;
  height: 4px;
  background: rgba(79, 251, 223, 0.1);
  border-radius: 2px;
  margin-top: 12px;
  overflow: hidden;
}

.hw-gauge-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--hw-bio-cyan), var(--hw-sub-yellow));
  border-radius: 2px;
  transition: width 1s ease;
}

/* ============================================
   探索日志时间轴
   ============================================ */
.hw-timeline {
  position: relative;
  padding-left: 24px;
}

.hw-timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--hw-bio-cyan), rgba(79, 251, 223, 0.1));
}

.hw-timeline-item {
  position: relative;
  padding: 0 0 32px 24px;
}

.hw-timeline-dot {
  position: absolute;
  left: -20px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--hw-deep-blue);
  border: 2px solid var(--hw-bio-cyan);
  box-shadow: 0 0 8px rgba(79, 251, 223, 0.3);
}

.hw-timeline-date {
  font-size: 0.8rem;
  color: var(--hw-bio-cyan);
  font-family: var(--hw-font-mono);
  margin-bottom: 6px;
}

.hw-timeline-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.hw-timeline-text {
  font-size: 0.9rem;
  color: var(--hw-text-secondary);
  line-height: 1.7;
}

/* ============================================
   CTA样本提交入口
   ============================================ */
.hw-cta-card {
  background: var(--hw-card-bg);
  border: 2px solid rgba(79, 251, 223, 0.3);
  border-radius: var(--hw-radius);
  padding: 40px 24px;
  text-align: center;
  animation: hw-glow-border 3s infinite;
}

.hw-cta-title {
  font-family: var(--hw-font-title);
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.hw-cta-desc {
  color: var(--hw-text-secondary);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.hw-cta-btn {
  display: inline-block;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--hw-bio-cyan), #2dd4bf);
  color: var(--hw-deep-blue);
  font-weight: 700;
  border-radius: 30px;
  font-size: 1rem;
  transition: all var(--hw-transition);
  text-decoration: none;
}

.hw-cta-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(79, 251, 223, 0.4);
  color: var(--hw-deep-blue);
}

/* ============================================
   页脚
   ============================================ */
#hw-footer {
  background: linear-gradient(180deg, var(--hw-deep-blue), #060E1A);
  border-top: 1px solid var(--hw-glass-border);
  padding: 48px 0 0;
}

.hw-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.hw-footer-col h4 {
  font-family: var(--hw-font-title);
  font-size: 1rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 16px;
}

.hw-footer-col p,
.hw-footer-col a {
  font-size: 0.9rem;
  color: var(--hw-text-secondary);
  line-height: 2;
  display: block;
}

.hw-footer-col a:hover {
  color: var(--hw-bio-cyan);
}

.hw-footer-honors {
  border-top: 1px solid var(--hw-glass-border);
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 32px;
}

.hw-honor-item {
  font-size: 0.8rem;
  color: var(--hw-text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hw-honor-icon {
  font-size: 1rem;
}

.hw-footer-bottom {
  border-top: 1px solid var(--hw-glass-border);
  padding: 20px 0;
  text-align: center;
}

.hw-footer-auth {
  font-size: 0.85rem;
  color: var(--hw-text-secondary);
  margin-bottom: 8px;
}

.hw-footer-copy {
  font-size: 0.8rem;
  color: rgba(139, 163, 184, 0.6);
}

/* ============================================
   内页通用样式
   ============================================ */
.hw-page-header {
  padding: 48px 0 32px;
  text-align: center;
  background: linear-gradient(180deg, var(--hw-mid-blue), var(--hw-deep-blue));
  border-bottom: 1px solid var(--hw-glass-border);
}

.hw-page-title {
  font-family: var(--hw-font-title);
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.hw-page-desc {
  color: var(--hw-text-secondary);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.hw-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--hw-text-secondary);
  flex-wrap: wrap;
}

.hw-breadcrumb a {
  color: var(--hw-text-secondary);
}

.hw-breadcrumb a:hover {
  color: var(--hw-bio-cyan);
}

.hw-breadcrumb-sep {
  color: rgba(139, 163, 184, 0.4);
}

/* 内页文章样式 */
.hw-article {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 0;
}

.hw-article p {
  margin-bottom: 20px;
  line-height: 1.9;
  font-size: 1rem;
  color: var(--hw-text-primary);
}

.hw-article h2 {
  font-family: var(--hw-font-title);
  font-size: 1.4rem;
  color: var(--hw-bio-cyan);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hw-glass-border);
}

.hw-article h3 {
  font-size: 1.15rem;
  color: var(--hw-text-primary);
  margin: 24px 0 12px;
}

.hw-article-img {
  width: 100%;
  border-radius: var(--hw-radius);
  margin: 24px 0;
  border: 1px solid var(--hw-glass-border);
}

.hw-article blockquote {
  border-left: 3px solid var(--hw-bio-cyan);
  padding: 16px 20px;
  margin: 24px 0;
  background: rgba(79, 251, 223, 0.05);
  border-radius: 0 var(--hw-radius-sm) var(--hw-radius-sm) 0;
  color: var(--hw-text-secondary);
  font-style: italic;
}

/* ============================================
   表单样式（深海样本提交）
   ============================================ */
.hw-form-group {
  margin-bottom: 20px;
}

.hw-form-label {
  display: block;
  font-size: 0.9rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 8px;
  font-family: var(--hw-font-mono);
}

.hw-form-input,
.hw-form-textarea,
.hw-form-select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(79, 251, 223, 0.04);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius-sm);
  color: var(--hw-text-primary);
  font-size: 0.95rem;
  font-family: var(--hw-font-body);
  outline: none;
  transition: border-color var(--hw-transition);
}

.hw-form-input:focus,
.hw-form-textarea:focus {
  border-color: var(--hw-bio-cyan);
  box-shadow: 0 0 8px rgba(79, 251, 223, 0.15);
}

.hw-form-textarea {
  min-height: 120px;
  resize: vertical;
}

.hw-form-file {
  padding: 20px;
  border: 2px dashed var(--hw-glass-border);
  border-radius: var(--hw-radius-sm);
  text-align: center;
  color: var(--hw-text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--hw-transition);
}

.hw-form-file:hover {
  border-color: var(--hw-bio-cyan);
}

.hw-form-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, rgba(79, 251, 223, 0.2), rgba(79, 251, 223, 0.05));
  border: 1px solid var(--hw-bio-cyan);
  border-radius: var(--hw-radius-sm);
  color: var(--hw-bio-cyan);
  font-size: 1rem;
  font-family: var(--hw-font-title);
  cursor: pointer;
  transition: all var(--hw-transition);
  letter-spacing: 2px;
}

.hw-form-submit:hover {
  background: rgba(79, 251, 223, 0.25);
  box-shadow: var(--hw-glow-cyan);
}

/* 上传进度条 */
.hw-upload-progress {
  display: none;
  margin-top: 20px;
}

.hw-upload-progress.hw-show {
  display: block;
}

.hw-progress-bar-outer {
  width: 100%;
  height: 8px;
  background: rgba(79, 251, 223, 0.1);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.hw-progress-bar-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--hw-bio-cyan), var(--hw-sub-yellow));
  border-radius: 4px;
  transition: width 0.3s ease;
}

.hw-progress-text {
  font-size: 0.85rem;
  color: var(--hw-bio-cyan);
  font-family: var(--hw-font-mono);
  text-align: center;
}

/* 模态提示框 */
.hw-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.hw-modal-overlay.hw-show {
  display: flex;
}

.hw-modal-box {
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-bio-cyan);
  border-radius: var(--hw-radius);
  padding: 32px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: 0 0 40px rgba(79, 251, 223, 0.2);
}

.hw-modal-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.hw-modal-title {
  font-family: var(--hw-font-title);
  font-size: 1.2rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 12px;
}

.hw-modal-text {
  color: var(--hw-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.hw-modal-close {
  padding: 10px 28px;
  background: transparent;
  border: 1px solid var(--hw-bio-cyan);
  border-radius: 20px;
  color: var(--hw-bio-cyan);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all var(--hw-transition);
}

.hw-modal-close:hover {
  background: rgba(79, 251, 223, 0.15);
}

/* ============================================
   APP下载页
   ============================================ */
.hw-app-hero {
  padding: 60px 0;
  text-align: center;
}

.hw-app-mockup {
  max-width: 280px;
  margin: 0 auto 32px;
  border-radius: 24px;
  border: 2px solid var(--hw-glass-border);
  box-shadow: var(--hw-shadow);
}

.hw-download-btns {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  margin-top: 32px;
}

.hw-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--hw-transition);
  min-width: 220px;
  justify-content: center;
  text-decoration: none;
}

.hw-download-ios {
  background: linear-gradient(135deg, #333, #111);
  color: #fff;
  border: 1px solid #555;
}

.hw-download-android {
  background: linear-gradient(135deg, #1a472a, #0d2818);
  color: #4FFBDF;
  border: 1px solid rgba(79, 251, 223, 0.3);
}

.hw-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--hw-glow-cyan);
}

.hw-app-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 48px;
}

.hw-app-feature {
  background: var(--hw-card-bg);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius);
  padding: 24px;
  text-align: center;
}

.hw-app-feature-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.hw-app-feature-title {
  font-family: var(--hw-font-title);
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--hw-bio-cyan);
}

.hw-app-feature-desc {
  font-size: 0.9rem;
  color: var(--hw-text-secondary);
}

/* ============================================
   样本列表
   ============================================ */
.hw-sample-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hw-sample-item {
  background: rgba(79, 251, 223, 0.04);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius-sm);
  padding: 16px;
  font-family: var(--hw-font-mono);
  font-size: 0.85rem;
}

.hw-sample-id {
  color: var(--hw-bio-cyan);
  margin-bottom: 4px;
}

.hw-sample-name {
  color: var(--hw-sub-yellow);
  font-family: var(--hw-font-body);
  font-weight: 600;
}

.hw-sample-meta {
  color: var(--hw-text-secondary);
  margin-top: 4px;
  font-size: 0.8rem;
}

/* ============================================
   HUD协议面板
   ============================================ */
.hw-hud-panel {
  background: rgba(79, 251, 223, 0.03);
  border: 1px solid var(--hw-glass-border);
  border-radius: var(--hw-radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.hw-hud-panel::after {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--hw-bio-cyan);
  animation: hw-scan-line 4s linear infinite;
}

.hw-hud-title {
  font-family: var(--hw-font-mono);
  font-size: 0.9rem;
  color: var(--hw-bio-cyan);
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.hw-hud-text {
  font-size: 0.9rem;
  color: var(--hw-text-secondary);
  line-height: 1.8;
}

/* ============================================
   两栏布局
   ============================================ */
.hw-two-col {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hw-col-left,
.hw-col-right {
  width: 100%;
}

/* ============================================
   响应式断点 - 768px
   ============================================ */
@media (min-width: 768px) {
  .hw-container {
    padding: 0 24px;
  }

  .hw-section {
    padding: 64px 0;
  }

  .hw-section-title {
    font-size: 1.8rem;
  }

  #hw-hero {
    height: 80vh;
  }

  .hw-hero-title {
    font-size: 2.4rem;
  }

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

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

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

  .hw-archive-item {
    flex-direction: row;
  }

  .hw-archive-img {
    width: 280px;
    height: auto;
    min-height: 180px;
  }

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

  .hw-two-col {
    flex-direction: row;
  }

  .hw-col-left {
    width: 45%;
  }

  .hw-col-right {
    width: 55%;
  }

  .hw-download-btns {
    flex-direction: row;
    justify-content: center;
  }

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

  .hw-sonar-container {
    flex-direction: row;
  }

  .hw-page-title {
    font-size: 2.2rem;
  }
}

/* ============================================
   响应式断点 - 1024px
   ============================================ */
@media (min-width: 1024px) {
  .hw-nav-links {
    display: flex;
  }

  .hw-hamburger {
    display: none;
  }

  .hw-search-box {
    display: flex;
  }

  .hw-btn-login {
    display: block;
  }

  .hw-section-title {
    font-size: 2rem;
  }

  .hw-hero-title {
    font-size: 2.8rem;
  }

  .hw-video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hw-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hw-dashboard-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hw-footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hw-app-features {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   响应式断点 - 1440px
   ============================================ */
@media (min-width: 1440px) {
  .hw-container {
    padding: 0 40px;
  }

  .hw-section {
    padding: 80px 0;
  }

  .hw-hero-title {
    font-size: 3.2rem;
  }

  .hw-section-title {
    font-size: 2.2rem;
  }
}

/* ============================================
   工具类
   ============================================ */
.hw-text-cyan { color: var(--hw-bio-cyan); }
.hw-text-yellow { color: var(--hw-sub-yellow); }
.hw-text-muted { color: var(--hw-text-secondary); }
.hw-text-center { text-align: center; }
.hw-mt-16 { margin-top: 16px; }
.hw-mt-24 { margin-top: 24px; }
.hw-mt-32 { margin-top: 32px; }
.hw-mb-16 { margin-bottom: 16px; }
.hw-mb-24 { margin-bottom: 24px; }
.hw-mb-32 { margin-bottom: 32px; }
.hw-hidden { display: none; }