/* ===================================================================
   微风网络 (BreezeNetwork) - 航海田野手记与港口观测台视觉系统
   Art Direction: Nautical Field Notes / Harbor Office of Brass & Glass
   Palette: Sea Mist #EDF3F2, Deep Tide #14707B, Seafoam #5FA8A0, 
            Ink Navy #123840, Foam #D8E7E4, Brass #B38F4D
   Typography: Marcellus (Display) & Work Sans (Body)
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Marcellus&family=Work+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --sea-mist: #EDF3F2;
  --foam: #D8E7E4;
  --foam-light: #EAF2F0;
  --seafoam: #5FA8A0;
  --seafoam-trans: rgba(95, 168, 160, 0.15);
  --deep-tide: #14707B;
  --deep-tide-dark: #0e525a;
  --ink-navy: #123840;
  --ink-navy-80: rgba(18, 56, 64, 0.8);
  --ink-navy-40: rgba(18, 56, 64, 0.4);
  --ink-navy-15: rgba(18, 56, 64, 0.12);
  --brass: #B38F4D;
  --brass-light: #DFC283;
  --brass-dark: #8C6F37;

  --border-subtle: #C4D8D4;
  --border-chart: #A9C6C1;
  --border-brass: rgba(179, 143, 77, 0.4);

  --font-display: 'Marcellus', 'Georgia', 'Times New Roman', serif;
  --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;

  --container-max: 1160px;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--sea-mist);
  color: var(--ink-navy);
  line-height: 1.7;
  /* 航海测量图海雾纸张质感底纹 */
  background-image: 
    linear-gradient(var(--ink-navy-15) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-navy-15) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: -1px -1px;
  min-height: 100vh;
}

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

img, svg {
  vertical-align: middle;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 顶部经纬航图观测条 */
.top-coordinate-bar {
  background: var(--ink-navy);
  color: var(--foam);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  padding: 6px 0;
  text-transform: uppercase;
  border-bottom: 1px solid var(--brass-dark);
}

.top-coordinate-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.coord-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.coord-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.brass-pin {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 4px var(--brass-light);
}

/* 导航栏 - 黄铜与玻璃港口办公室质感 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(237, 243, 242, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--deep-tide);
  box-shadow: 0 4px 18px rgba(18, 56, 64, 0.06);
  padding: 14px 0;
}

.navbar .nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 品牌 Logo: three concentric ripple arcs rising from a waterline, with a single droplet hanging above */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink-navy);
  letter-spacing: 0.02em;
}

.logo-symbol {
  width: 42px;
  height: 42px;
  color: var(--deep-tide);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink-navy);
}

.brand-subtext {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--deep-tide);
  text-transform: uppercase;
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: var(--ink-navy);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 6px 2px;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brass);
  transition: width 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a:hover {
  color: var(--deep-tide);
}

.nav-links .nav-news-link {
  color: var(--deep-tide);
  font-weight: 600;
}

/* 航海风格缆绳分割线 Rope-line Divider */
.rope-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 50px auto;
  max-width: var(--container-max);
  padding: 0 24px;
  position: relative;
}

.rope-divider::before {
  content: "";
  flex: 1;
  height: 3px;
  background-image: repeating-linear-gradient(
    -45deg,
    var(--deep-tide),
    var(--deep-tide) 5px,
    var(--foam) 5px,
    var(--foam) 10px,
    var(--brass) 10px,
    var(--brass) 12px
  );
  border-top: 1px solid var(--ink-navy);
  border-bottom: 1px solid var(--ink-navy);
}

.rope-divider-center {
  padding: 0 16px;
  color: var(--deep-tide);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.rope-divider-center svg {
  width: 18px;
  height: 18px;
  color: var(--brass);
}

/* 罗盘玫瑰标志 Compass-rose Section Marker */
.compass-marker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brass-dark);
  font-weight: 600;
  margin-bottom: 12px;
}

.compass-rose-icon {
  width: 22px;
  height: 22px;
  color: var(--brass);
  flex-shrink: 0;
}

/* 测深标注 Depth-number annotation */
.depth-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-family: monospace;
  letter-spacing: 0.08em;
  color: var(--deep-tide);
  background: var(--foam);
  border: 1px solid var(--border-chart);
  padding: 3px 8px;
  text-transform: uppercase;
}

/* 按钮系统 - 黄铜装配与深潮色铸造感 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  padding: 12px 26px;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  border-radius: 0; /* 严格避免 rounded sticker 风格，使用严谨工整的仪器切角与边框 */
  position: relative;
}

.btn-primary {
  background: var(--deep-tide);
  color: var(--sea-mist);
  border: 2px solid var(--ink-navy);
  box-shadow: 3px 3px 0px var(--ink-navy);
}

.btn-primary:hover {
  background: var(--ink-navy);
  color: #fff;
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--brass);
}

.btn-secondary {
  background: var(--foam);
  color: var(--ink-navy);
  border: 2px solid var(--deep-tide);
  box-shadow: 3px 3px 0px var(--deep-tide);
}

.btn-secondary:hover {
  background: #fff;
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--ink-navy);
}

.btn-dofollow {
  background: #fff;
  color: var(--ink-navy);
  border: 2px solid var(--brass);
  box-shadow: 3px 3px 0px var(--brass-dark);
}

.btn-dofollow:hover {
  background: var(--foam-light);
  border-color: var(--deep-tide);
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--deep-tide);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* 主视觉区 Hero Section */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 4.8vw, 3.8rem);
  font-weight: 500;
  line-height: 1.18;
  color: var(--ink-navy);
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.hero-headline .brand-highlight {
  color: var(--deep-tide);
  border-bottom: 3px solid var(--brass);
  padding-bottom: 2px;
  display: inline-block;
}

.hero-subheadline {
  font-size: 1.1rem;
  color: var(--ink-navy-80);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 620px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 40px;
}

/* Hero 右侧：港口航海田野手记观测板 (Station Observation Desk) */
.observation-card {
  background: #ffffff;
  border: 2px solid var(--deep-tide);
  box-shadow: 8px 8px 0px var(--ink-navy);
  padding: 30px;
  position: relative;
}

.observation-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px dashed var(--border-chart);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.observation-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ink-navy);
  font-weight: 600;
}

.observation-log-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.observation-log-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
}

.observation-log-item .log-time {
  font-family: monospace;
  color: var(--brass-dark);
  font-weight: 700;
  font-size: 0.8rem;
  padding-top: 2px;
}

.observation-log-item .log-body {
  color: var(--ink-navy);
}

.observation-status-strip {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-navy-80);
}

/* 区块排版 */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  font-weight: 500;
  color: var(--ink-navy);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--ink-navy-80);
}

/* 产品核心优势介绍（3个田野图文卡片） */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.field-card {
  background: #ffffff;
  border: 2px solid var(--deep-tide);
  box-shadow: 5px 5px 0px var(--border-chart);
  padding: 32px 26px;
  position: relative;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.field-card:hover {
  transform: translateY(-4px);
  box-shadow: 8px 8px 0px var(--deep-tide);
}

.field-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.field-icon-brass {
  width: 48px;
  height: 48px;
  background: var(--foam);
  border: 1px solid var(--border-brass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--deep-tide);
}

.field-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink-navy);
  margin-bottom: 12px;
}

.field-text {
  font-size: 0.95rem;
  color: var(--ink-navy-80);
  line-height: 1.75;
  margin-bottom: 20px;
  flex-grow: 1;
}

.field-metadata {
  border-top: 1px dashed var(--border-chart);
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--deep-tide);
  font-family: monospace;
}

/* 流媒体与 AI 支持图卡 (Nautical Logbook Cards) */
.media-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.logbook-card {
  background: #ffffff;
  border: 2px solid var(--ink-navy);
  box-shadow: 6px 6px 0px var(--deep-tide);
  padding: 36px 32px;
  position: relative;
}

.logbook-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brass-dark);
  border: 1px solid var(--brass);
  background: var(--foam-light);
  padding: 4px 12px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.service-tide-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.service-tide-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--sea-mist);
  border: 1px solid var(--border-chart);
  padding: 10px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink-navy);
}

.compass-tick {
  width: 8px;
  height: 8px;
  background: var(--seafoam);
  border: 1px solid var(--deep-tide);
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* 潮汐图表式价格表 (Tide-chart Tables) - 真实网上机场套餐参考 */
.tide-chart-wrapper {
  background: #ffffff;
  border: 2px solid var(--ink-navy);
  box-shadow: 8px 8px 0px var(--deep-tide);
  padding: 36px;
  position: relative;
  overflow-x: auto;
}

.tide-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 2px solid var(--ink-navy);
  padding-bottom: 16px;
  margin-bottom: 28px;
}

.tide-chart-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--ink-navy);
}

.tide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tide-tier-box {
  background: var(--sea-mist);
  border: 2px solid var(--border-chart);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.tide-tier-box.flagship {
  background: #ffffff;
  border: 2px solid var(--deep-tide);
  box-shadow: 0 0 0 3px var(--brass-light);
}

.flagship-label {
  position: absolute;
  top: -14px;
  right: 20px;
  background: var(--deep-tide);
  color: #fff;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  padding: 3px 12px;
  border: 1px solid var(--brass);
  font-weight: 600;
  text-transform: uppercase;
}

.tier-code {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--brass-dark);
  font-weight: 700;
  margin-bottom: 6px;
}

.tier-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--ink-navy);
  margin-bottom: 8px;
}

.tier-desc {
  font-size: 0.86rem;
  color: var(--ink-navy-80);
  margin-bottom: 20px;
}

.tier-price-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  border-top: 1px dashed var(--border-chart);
  border-bottom: 1px dashed var(--border-chart);
  padding: 16px 0;
  margin-bottom: 22px;
}

.tier-currency {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--deep-tide);
  font-weight: 700;
}

.tier-amount {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--ink-navy);
  line-height: 1;
}

.tier-period {
  font-size: 0.88rem;
  color: var(--ink-navy-80);
}

.tier-calc-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-family: monospace;
  background: rgba(179, 143, 77, 0.15);
  color: var(--brass-dark);
  border: 1px solid var(--brass);
  padding: 3px 10px;
  margin-top: 6px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.tier-traffic-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--foam-light);
  border: 1px solid var(--border-chart);
  padding: 10px 14px;
  margin-bottom: 20px;
  font-family: monospace;
}

.tier-traffic-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--ink-navy-80);
}

.tier-traffic-val {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--deep-tide);
}

.tier-spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.tier-spec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--ink-navy);
}

.spec-bullet {
  width: 6px;
  height: 6px;
  background: var(--deep-tide);
  border-radius: 50%;
  flex-shrink: 0;
}

/* 用户测速与航海评价 (Testimonial Log) */
.review-trust-score {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--foam);
  padding: 8px 16px;
  border-radius: 4px;
  margin-top: 16px;
  border: 1px solid rgba(179, 143, 77, 0.2);
}

.trust-stars {
  display: flex;
  gap: 4px;
  color: var(--brass);
}

.trust-stars svg {
  width: 18px;
  height: 18px;
}

.trust-text {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--ink-navy);
  letter-spacing: 0.02em;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-field-note {
  background: #ffffff;
  border: 1px solid var(--border-chart);
  border-left: 5px solid var(--deep-tide);
  padding: 26px;
  box-shadow: 4px 4px 0px rgba(18, 56, 64, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars-brass {
  color: var(--brass);
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.review-quote {
  font-size: 0.94rem;
  color: var(--ink-navy-80);
  line-height: 1.7;
  margin-bottom: 18px;
  font-style: italic;
}

.reviewer-meta {
  border-top: 1px dashed var(--border-subtle);
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.reviewer-name {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ink-navy);
}

.reviewer-occupation {
  font-size: 0.78rem;
  color: var(--deep-tide);
  font-family: monospace;
}

/* FAQ 航海手册问答 */
.faq-field-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-field-item {
  background: #ffffff;
  border: 1px solid var(--border-chart);
  border-left: 4px solid var(--brass);
  transition: all 0.2s ease;
}

.faq-field-item:hover {
  border-color: var(--deep-tide);
}

.faq-field-item summary {
  padding: 18px 24px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-navy);
  user-select: none;
}

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

.faq-toggle-arrow {
  width: 18px;
  height: 18px;
  color: var(--brass-dark);
  transition: transform 0.25s ease;
}

.faq-field-item[open] summary .faq-toggle-arrow {
  transform: rotate(180deg);
}

.faq-field-answer {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--ink-navy-80);
  line-height: 1.8;
  border-top: 1px dashed var(--border-subtle);
  margin-top: 4px;
  padding-top: 16px;
}

/* 底部呼唤 CTA 区域 */
.cta-station-banner {
  margin-top: 50px;
  background: var(--ink-navy);
  color: var(--sea-mist);
  border: 2px solid var(--brass);
  box-shadow: 8px 8px 0px var(--deep-tide);
  padding: 50px 36px;
  text-align: center;
  position: relative;
}

.cta-station-banner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 500;
  margin-bottom: 14px;
}

.cta-station-banner p {
  color: var(--foam);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 30px;
}

.affiliate-disclosure {
  margin-top: 24px;
  padding: 16px;
  background-color: rgba(18, 56, 64, 0.05); /* ink-navy light */
  border: 1px dashed rgba(20, 112, 123, 0.3); /* deep-tide */
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--deep-tide);
  line-height: 1.6;
  text-align: left;
}

.affiliate-disclosure strong {
  color: var(--ink-navy);
}

/* 页脚 Footer - 严格保留四个规定标题并打开新页面 */
.footer {
  border-top: 3px double var(--deep-tide);
  padding: 48px 0 36px;
  background: var(--ink-navy);
  color: var(--sea-mist);
  margin-top: 70px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.05em;
  color: var(--foam);
  position: relative;
  padding: 4px 0;
}

.footer-nav a:hover {
  color: var(--brass-light);
  border-bottom: 1px solid var(--brass);
}

.footer-copy {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(216, 231, 228, 0.7);
  letter-spacing: 0.04em;
}

.footer-trust-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px dashed rgba(184, 212, 206, 0.3);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--seafoam);
  color: var(--seafoam);
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--seafoam);
  color: var(--ink-navy);
  transform: translateY(-2px);
}

.social-links svg {
  width: 18px;
  height: 18px;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--brass-light);
  letter-spacing: 0.03em;
}

.trust-badge svg {
  width: 16px;
  height: 16px;
  color: var(--brass);
}

@media (min-width: 768px) {
  .footer-trust-row {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* 子页面文章排版规范 */
.subpage-container {
  max-width: 880px;
  margin: 50px auto 80px;
  padding: 0 24px;
}

.subpage-box {
  background: #ffffff;
  border: 2px solid var(--deep-tide);
  box-shadow: 8px 8px 0px var(--ink-navy);
  padding: 46px 40px;
}

.subpage-header {
  border-bottom: 2px solid var(--ink-navy);
  padding-bottom: 20px;
  margin-bottom: 30px;
}

.subpage-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  color: var(--ink-navy);
  font-weight: 500;
  margin-bottom: 10px;
}

.subpage-meta {
  font-size: 0.85rem;
  color: var(--deep-tide);
  font-family: monospace;
  letter-spacing: 0.05em;
}

.subpage-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--ink-navy);
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-chart);
}

.subpage-content h2:first-of-type {
  margin-top: 0;
}

.subpage-content p {
  margin-bottom: 18px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-navy-80);
}

.subpage-content ul, .subpage-content ol {
  margin: 0 0 20px 24px;
  color: var(--ink-navy-80);
}

.subpage-content li {
  margin-bottom: 10px;
  line-height: 1.8;
}

.callout-box {
  background: var(--foam-light);
  border-left: 4px solid var(--deep-tide);
  padding: 18px 22px;
  margin: 24px 0;
  color: var(--ink-navy);
  border: 1px solid var(--border-chart);
  border-left-width: 4px;
}

/* 资讯推荐卡片与文章系统样式 (Nautical Dispatch System) */
.news-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 36px;
}

.news-card {
  background: #ffffff;
  border: 2px solid var(--deep-tide);
  box-shadow: 5px 5px 0px var(--border-chart);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
  position: relative;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 8px 8px 0px var(--deep-tide);
}

.news-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.news-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-family: monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-dark);
  border: 1px solid var(--brass);
  background: var(--foam-light);
  padding: 3px 8px;
  font-weight: 600;
}

.news-read-time {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--ink-navy-40);
}

.news-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink-navy);
  margin-bottom: 12px;
}

.news-title a:hover {
  color: var(--deep-tide);
  text-decoration: underline;
}

.news-excerpt {
  font-size: 0.9rem;
  color: var(--ink-navy-80);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.news-card-footer {
  border-top: 1px dashed var(--border-chart);
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.news-date {
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--deep-tide);
}

.news-cta-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--deep-tide);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-cta-link:hover {
  color: var(--brass-dark);
  text-decoration: underline;
}

.news-more-wrap {
  text-align: center;
  margin-top: 10px;
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--deep-tide);
  font-family: monospace;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--ink-navy-80);
}

.breadcrumb a:hover {
  color: var(--deep-tide);
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--brass-dark);
}

/* 文章详情页专用排版 */
.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  border-top: 1px solid var(--border-chart);
  border-bottom: 1px solid var(--border-chart);
  padding: 12px 0;
  margin: 18px 0 28px;
  font-size: 0.82rem;
  font-family: monospace;
  color: var(--ink-navy-80);
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  color: var(--ink-navy);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--deep-tide);
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--deep-tide);
  margin: 24px 0 12px;
}

.article-body p {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-navy);
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  margin: 0 0 22px 26px;
  color: var(--ink-navy);
}

.article-body li {
  margin-bottom: 10px;
  line-height: 1.8;
}

.article-body blockquote {
  background: var(--foam-light);
  border-left: 4px solid var(--brass);
  padding: 16px 20px;
  margin: 22px 0;
  font-style: italic;
  color: var(--ink-navy);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
  background: #ffffff;
  border: 2px solid var(--border-chart);
}

.article-body th {
  background: var(--foam);
  color: var(--ink-navy);
  padding: 12px 14px;
  text-align: left;
  border: 1px solid var(--border-chart);
  font-family: var(--font-display);
}

.article-body td {
  padding: 12px 14px;
  border: 1px solid var(--border-chart);
  color: var(--ink-navy-80);
}

.article-body tr:nth-child(even) {
  background: var(--sea-mist);
}

.article-body a {
  color: var(--deep-tide);
  text-decoration: underline;
  font-weight: 500;
}

.article-body a:hover {
  color: var(--brass-dark);
}

/* 作者信息卡 */
.author-card {
  margin-top: 45px;
  padding: 24px;
  background: var(--sea-mist);
  border: 2px solid var(--border-chart);
  border-left: 5px solid var(--brass);
  display: flex;
  gap: 20px;
  align-items: center;
}

.author-avatar-nautical {
  width: 58px;
  height: 58px;
  background: var(--deep-tide);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  flex-shrink: 0;
  border: 2px solid var(--brass);
}

.author-info h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ink-navy);
  margin-bottom: 4px;
}

.author-info p {
  font-size: 0.88rem;
  color: var(--ink-navy-80);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 推荐阅读列表 */
.related-articles-section {
  margin-top: 50px;
  border-top: 2px dashed var(--border-chart);
  padding-top: 36px;
}

.related-articles-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--ink-navy);
  margin-bottom: 22px;
}

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

.related-card {
  background: #ffffff;
  border: 1px solid var(--border-chart);
  border-left: 4px solid var(--deep-tide);
  padding: 18px 20px;
  transition: all 0.2s ease;
}

.related-card:hover {
  transform: translateX(4px);
  border-left-color: var(--brass);
}

.related-card a {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-navy);
  text-decoration: none;
  display: block;
  margin-bottom: 6px;
}

.related-card a:hover {
  color: var(--deep-tide);
}

.related-card p {
  font-size: 0.82rem;
  color: var(--ink-navy-80);
  margin: 0;
/* 首页 Hero 风格照片画框 (Harbor Office Photo Frame) */
.hero-photo-frame {
  margin-top: 26px;
  position: relative;
  border: 2px solid var(--deep-tide);
  box-shadow: 6px 6px 0px var(--ink-navy);
  background: #ffffff;
  padding: 8px;
  overflow: hidden;
}

.hero-photo-frame img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border-chart);
}

.hero-photo-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--deep-tide);
  padding: 8px 6px 2px;
  letter-spacing: 0.05em;
}

/* 文章翻页条 (上一篇 / 下一篇 链式导航) */
.article-pagination {
  margin-top: 40px;
  border-top: 2px dashed var(--border-chart);
  padding-top: 26px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.pagination-item {
  background: #ffffff;
  border: 1px solid var(--border-chart);
  border-left: 4px solid var(--brass);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.pagination-item.next {
  border-left: 1px solid var(--border-chart);
  border-right: 4px solid var(--deep-tide);
  text-align: right;
  align-items: flex-end;
}

.pagination-item:hover {
  transform: translateY(-2px);
  box-shadow: 3px 3px 0px var(--deep-tide);
}

.pagination-label {
  font-family: monospace;
  font-size: 0.74rem;
  color: var(--deep-tide);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.pagination-link {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-navy);
  line-height: 1.4;
}

.pagination-link:hover {
  color: var(--brass-dark);
}

/* 航海风格悬浮返回与顶部操作 Dock (Floating Action Button) */
.floating-dock {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 1050;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.floating-btn {
  width: 46px;
  height: 46px;
  background: var(--ink-navy);
  color: var(--sea-mist);
  border: 2px solid var(--brass);
  box-shadow: 3px 3px 0px var(--deep-tide);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1;
  text-decoration: none;
}

.floating-btn:hover {
  background: var(--deep-tide);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 5px 5px 0px var(--brass-dark);
}

.floating-btn svg {
  width: 18px;
  height: 18px;
  margin-bottom: 2px;
}

/* 移动端响应式适配 */
@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .features-grid,
  .reviews-grid,
  .tide-grid,
  .news-cards-grid,
  .related-articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .nav-links {
    display: flex;
    overflow-x: auto;
    width: 100%;
    padding: 10px 0;
    gap: 16px;
    border-top: 1px solid var(--border-subtle);
    margin-top: 8px;
  }

  .navbar .nav-wrapper {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .features-grid,
  .media-ai-grid,
  .reviews-grid,
  .tide-grid,
  .service-tide-list,
  .news-cards-grid,
  .related-articles-grid {
    grid-template-columns: 1fr;
  }

  .author-card {
    flex-direction: column;
    text-align: center;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
    min-height: 48px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 18px;
  }

  .subpage-box {
    padding: 28px 18px;
  }
}