/**
 * CityTrust 首页样式
 * 命名: ct-* (CityTrust)
 * 依赖: tokens.css + ct.css
 */

/* ==================== Hero ==================== */
.ct-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--ct-header-h);
  padding-bottom: var(--ct-space-9);
  overflow: hidden;
  isolation: isolate;
  background: radial-gradient(
    ellipse at top right,
    rgba(19, 26, 46, 0.6),
    var(--ct-bg) 60%
  );
}
.ct-hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}
.ct-hero__glow {
  z-index: 0;
}
.ct-hero__glow--1 {
  top: -100px;
  left: -200px;
  width: 700px;
  height: 700px;
}
.ct-hero__glow--2 {
  bottom: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--ct-mint-glow) 0%, transparent 70%);
  opacity: 0.4;
}
.ct-hero .ct-bg-grid {
  z-index: 0;
}
.ct-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--ct-space-8);
  align-items: center;
}
.ct-hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-5);
  max-width: 640px;
}
.ct-hero__title {
  margin: 0;
}
.ct-hero__lead {
  font-size: var(--ct-fs-body-lg);
  max-width: 52ch;
}
.ct-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ct-space-3);
  margin-top: var(--ct-space-4);
}
.ct-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.ct-hero__scroll {
  position: absolute;
  bottom: var(--ct-space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--ct-space-2);
  z-index: 1;
  color: var(--ct-text-mute);
  font-size: var(--ct-fs-xs);
  letter-spacing: 0.3em;
}
.ct-hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--ct-gold), transparent);
  position: relative;
  overflow: hidden;
}
.ct-hero__scroll-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent, var(--ct-gold) 50%, transparent);
  animation: ct-scroll-line 2s ease-in-out infinite;
}
@keyframes ct-scroll-line {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

/* ==================== Skyline Visual (Hero Right) · 主题: City + Trust ==================== */
.ct-skyline {
  position: relative;
  width: 600px;
  max-width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 后景径向 glow (城市夜景的光晕) */
.ct-skyline__glow {
  position: absolute;
  inset: 8% 8% 8% 8%;
  background: radial-gradient(
    circle at 50% 55%,
    var(--ct-gold-glow-strong) 0%,
    var(--ct-gold-glow) 30%,
    transparent 65%
  );
  filter: blur(30px);
  z-index: 0;
  animation: ct-skyline-glow 4s ease-in-out infinite;
}
@keyframes ct-skyline-glow {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.08); }
}

/* 三圈虚线光环 (居中,与球反向慢速旋转) */
.ct-skyline__halo {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px dashed rgba(201, 160, 92, 0.22);
  z-index: 1;
  pointer-events: none;
}
.ct-skyline__halo--1 {
  width: 100%; height: 100%;
  margin: -50% 0 0 -50%;
  animation: ct-skyline-halo 220s linear infinite reverse;
}
.ct-skyline__halo--2 {
  width: 78%; height: 78%;
  margin: -39% 0 0 -39%;
  border-color: rgba(201, 160, 92, 0.3);
  animation: ct-skyline-halo 180s linear infinite;
}
.ct-skyline__halo--3 {
  width: 54%; height: 54%;
  margin: -27% 0 0 -27%;
  border-color: rgba(201, 160, 92, 0.4);
  animation: ct-skyline-halo 140s linear infinite reverse;
}
@keyframes ct-skyline-halo {
  to { transform: rotate(360deg); }
}

/* 三个轨道容器 (隐形,负责让球绕中心旋转) — 不同方向 + 不同速度 */
.ct-skyline__orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
}
.ct-skyline__orbit--1 {
  width: 100%;
  height: 100%;
  margin: -50% 0 0 -50%;
  animation: ct-skyline-orbit 22s linear infinite;
}
.ct-skyline__orbit--2 {
  width: 78%;
  height: 78%;
  margin: -39% 0 0 -39%;
  animation: ct-skyline-orbit 16s linear infinite reverse;
}
.ct-skyline__orbit--3 {
  width: 54%;
  height: 54%;
  margin: -27% 0 0 -27%;
  animation: ct-skyline-orbit 11s linear infinite;
}
@keyframes ct-skyline-orbit {
  to { transform: rotate(360deg); }
}

/* 球 (跟随 orbit 容器旋转,落在虚线环上) */
.ct-skyline__orbit-node {
  position: absolute;
  top: 0;
  left: 50%;
  border-radius: 50%;
  background: var(--ct-gold);
  display: block;
}
.ct-skyline__orbit--1 .ct-skyline__orbit-node {
  width: 14px; height: 14px;
  margin: -7px 0 0 -7px;
  background: var(--ct-gold);
  box-shadow: 0 0 14px var(--ct-gold-glow-strong), 0 0 36px var(--ct-gold-glow);
}
.ct-skyline__orbit--2 .ct-skyline__orbit-node {
  width: 10px; height: 10px;
  margin: -5px 0 0 -5px;
  background: var(--ct-accent);
  box-shadow: 0 0 12px var(--ct-accent-glow), 0 0 28px var(--ct-accent-glow);
}
.ct-skyline__orbit--3 .ct-skyline__orbit-node {
  width: 7px; height: 7px;
  margin: -3.5px 0 0 -3.5px;
  background: var(--ct-gold-light);
  opacity: 0.9;
  box-shadow: 0 0 10px var(--ct-gold-glow-strong);
}

/* 中央 logo (盾+城市天际线) */
.ct-skyline__logo {
  position: relative;
  z-index: 3;
  height: 380px;
  width: auto;
  filter:
    drop-shadow(0 0 24px var(--ct-gold-glow-strong))
    drop-shadow(0 0 60px var(--ct-gold-glow));
  animation: ct-skyline-breathe 5s ease-in-out infinite;
  pointer-events: none;
}
@keyframes ct-skyline-breathe {
  0%, 100% {
    transform: translateY(0) scale(1);
    filter: drop-shadow(0 0 24px var(--ct-gold-glow-strong)) drop-shadow(0 0 60px var(--ct-gold-glow));
  }
  50% {
    transform: translateY(-4px) scale(1.015);
    filter: drop-shadow(0 0 40px var(--ct-gold-glow-strong)) drop-shadow(0 0 100px var(--ct-gold-glow));
  }
}

/* 底座光带 (logo 之下的反射感) */
.ct-skyline__base {
  position: absolute;
  bottom: 8%;
  left: 50%;
  width: 70%;
  margin-left: -35%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ct-gold), transparent);
  z-index: 2;
  opacity: 0.7;
}
.ct-skyline__base::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  width: 50%;
  margin-left: -25%;
  height: 40px;
  background: radial-gradient(ellipse at top, var(--ct-gold-glow-strong) 0%, transparent 75%);
  filter: blur(10px);
  pointer-events: none;
}

/* ==================== Section Header ==================== */
.ct-section__header {
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-4);
  max-width: 720px;
  margin: 0 auto var(--ct-space-9) auto;
  text-align: center;
  align-items: center;
}
.ct-section__header--row {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  text-align: left;
  max-width: 100%;
}
.ct-section__header h2 {
  margin: 0;
}

/* ==================== Stats Strip ==================== */
.ct-stats {
  padding: var(--ct-space-9) 0;
}
.ct-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--ct-space-7);
  align-items: end;
}
.ct-stat {
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-3);
  position: relative;
  padding-left: var(--ct-space-5);
  border-left: 1px solid var(--ct-border);
}
.ct-stat__value {
  font-family: var(--ct-font-display);
  font-size: var(--ct-fs-stat);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ct-text);
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-variation-settings: 'opsz' 144;
}
.ct-stat__currency {
  font-size: 0.55em;
  color: var(--ct-gold);
  font-weight: 500;
  margin-right: 4px;
}
.ct-stat__suffix {
  font-size: 0.45em;
  color: var(--ct-gold);
  font-weight: 500;
  margin-left: 2px;
}
.ct-stat__label {
  color: var(--ct-text-soft);
  font-size: var(--ct-fs-sm);
  letter-spacing: 0.04em;
}

/* ==================== Services ==================== */
.ct-services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ct-space-5);
}
/* ct-service-card / ct-final-cta 已抽到 ct.css 公共组件 */

/* ==================== About Block ==================== */
.ct-about-block__grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: var(--ct-space-9);
  align-items: center;
}
.ct-about-block__media {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--ct-radius-2xl);
  overflow: hidden;
}
.ct-about-block__media-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 20%, var(--ct-gold-glow), transparent 50%),
    linear-gradient(135deg, var(--ct-bg-elev), var(--ct-bg-deep));
}

/* CityTrust 印章插图 (主体, 非背景) */
.ct-trust-seal {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;       /* 印章向上对齐 (不是中心), 避免离顶部太远 */
  justify-content: center;
  padding-top: 4%;
  background: linear-gradient(135deg, var(--ct-bg-elev), var(--ct-bg-deep));
}
.ct-trust-seal__svg {
  width: 86%;
  max-width: 380px;
  height: auto;
}
/* 外圈虚线流动 (stroke-dashoffset 是 GPU 友好的, 不会卡)
   dasharray "2 5" → 模式周期 7px, dashoffset -7 即视觉无缝循环 */
.ct-trust-seal__ring-flow {
  animation: ct-seal-dash-flow 1.2s linear infinite;
}
@keyframes ct-seal-dash-flow {
  to { stroke-dashoffset: -14; }
}
.ct-about-block__media::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid var(--ct-border-strong);
  pointer-events: none;
}
.ct-about-block__media-card {
  position: absolute;
  inset: auto var(--ct-space-6) var(--ct-space-6) var(--ct-space-6);
  background: rgba(11, 16, 32, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--ct-border-gold);
  border-radius: var(--ct-radius-xl);
  padding: var(--ct-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-4);
}
.ct-about-block__quote {
  font-family: var(--ct-font-display);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ct-text);
  margin: 0;
  letter-spacing: -0.01em;
}
.ct-about-block__quote em {
  color: var(--ct-gold);
  font-style: normal;
  font-weight: 700;
}
.ct-about-block__signature {
  display: flex;
  align-items: center;
  gap: var(--ct-space-2);
  color: var(--ct-text-mute);
  font-size: var(--ct-fs-xs);
  letter-spacing: 0.06em;
}
.ct-about-block__sig-name::before {
  content: '— ';
}
.ct-about-block__content {
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-5);
}
.ct-about-block__content h2 { margin: 0; }

.ct-feature-list {
  list-style: none;
  padding: 0;
  margin: var(--ct-space-3) 0;
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-4);
}
.ct-feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--ct-space-4);
}
.ct-feature-list__item div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ct-feature-list__item strong {
  color: var(--ct-text);
  font-weight: 600;
}
.ct-feature-list__item span:not(.ct-feature-list__icon) {
  color: var(--ct-text-soft);
  font-size: var(--ct-fs-sm);
}
.ct-feature-list__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--ct-gold-soft);
  color: var(--ct-gold);
  flex-shrink: 0;
  margin-top: 2px;
}
.ct-about-block__content .ct-btn {
  align-self: flex-start;
  margin-top: var(--ct-space-3);
}

/* ==================== Skyline Band (About 景深动画背景) ==================== */
/* 设计: SVG turbulence 流动云气 + 多层星点 + parallax 错位
   - 底色: var(--ct-bg) (band 自身, 与上下 section 同色, 边界自然)
   - bg: 容纳 cloud/stars/particles 的 parallax 容器 (上下大幅溢出留 parallax 余地)
   - fade: 顶/底蒙版, 在 bg 之上 section 之下, 用 var(--ct-bg) gradient 把云在边界淡入到主底色
   - parallax: data-parallax = 跟随率 (0=完全静止 1=同步), 越远越静止 */

.ct-skyline-band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ct-bg);
}
.ct-skyline-band > .ct-section {
  position: relative;
  z-index: 2;
  background: transparent;
}
.ct-skyline-band__defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

.ct-skyline-band__bg {
  position: absolute;
  /* 上下大幅溢出, 给 parallax translate 留余地 */
  inset: -50% 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* --- 视差层包装 (JS 控制 transform, 越远越静止) --- */
.ct-skyline-band__layer {
  position: absolute;
  inset: 0;
  will-change: transform;
}

/* --- 中央流动云 ---
   一团圆形云, conic-gradient 内部色彩持续旋转 → "流动"
   纯 CSS, 无 SVG, 无 mix-blend-mode, 无 opacity 闪烁 */
.ct-skyline-band__cloud {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 33%;
  height: 28%;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg at 50% 50%,
    transparent 0deg,
    rgba(232, 184, 114, 0.16) 60deg,
    rgba(201, 160, 92, 0.22) 130deg,
    transparent 200deg,
    rgba(232, 184, 114, 0.14) 280deg,
    rgba(201, 160, 92, 0.10) 330deg,
    transparent 360deg
  );
  filter: blur(70px);
  animation: ct-cloud-flow 60s linear infinite;
  transform-origin: 50% 50%;
}
@keyframes ct-cloud-flow {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* --- 顶/底渐变蒙版 (band 直属, 在 bg 上方 section 下方) --- */
.ct-skyline-band__fade {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg,
    var(--ct-bg)         0%,
    var(--ct-bg)         5%,
    rgba(11, 16, 32, 0.95) 10%,
    rgba(11, 16, 32, 0.7)  16%,
    rgba(11, 16, 32, 0.35) 22%,
    rgba(11, 16, 32, 0.12) 28%,
    transparent           34%,
    transparent           66%,
    rgba(11, 16, 32, 0.12) 72%,
    rgba(11, 16, 32, 0.35) 78%,
    rgba(11, 16, 32, 0.7)  84%,
    rgba(11, 16, 32, 0.95) 90%,
    var(--ct-bg)          95%,
    var(--ct-bg)         100%
  );
}

/* --- L3/L4: 星点层 (JS 用 box-shadow 注入随机点) --- */
.ct-skyline-band__stars {
  position: absolute;
  inset: 0;
  /* 真正的星点由 JS 生成 box-shadow */
}
.ct-skyline-band__stars::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  border-radius: 50%;
  background: transparent;
  box-shadow: var(--ct-stars-shadow, none);
}
.ct-skyline-band__stars--mid::before {
  /* 金色星点带 glow */
  filter: drop-shadow(0 0 3px rgba(232, 184, 114, 0.6));
}

/* --- L5: 漂浮金粒子 (近) --- */
.ct-skyline-band__particles {
  position: absolute;
  inset: 0;
}
.ct-skyline-band__particle {
  position: absolute;
  bottom: 10%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ct-gold-light);
  box-shadow: 0 0 14px var(--ct-gold-glow-strong);
  opacity: 0;
  animation-name: ct-band-particle-rise;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  will-change: transform, opacity;
}
@keyframes ct-band-particle-rise {
  0%   { transform: translateY(0); opacity: 0; }
  8%   { opacity: 0.85; }
  92%  { opacity: 0.7; }
  100% { transform: translateY(-1500px); opacity: 0; }
}

/* --- 守护光带 (横向慢扫) --- */
.ct-skyline-band__sweep {
  position: absolute;
  top: 38%;
  left: -55%;
  width: 70%;
  height: 110px;
  background: linear-gradient(90deg, transparent, rgba(232, 184, 114, 0.14) 50%, transparent);
  filter: blur(30px);
  opacity: 0;
  animation: ct-band-sweep 22s ease-in-out infinite;
  will-change: transform, opacity;
}
@keyframes ct-band-sweep {
  0%, 100% { transform: translateX(0); opacity: 0; }
  10%      { opacity: 0.85; }
  90%      { opacity: 0.85; }
  50%      { transform: translateX(180%); opacity: 1; }
}

/* ==================== Insights / News ==================== */
.ct-insights__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: var(--ct-space-5);
  min-height: 520px;
}
.ct-insight-card {
  position: relative;
  border-radius: var(--ct-radius-lg);
  overflow: hidden;
  background: var(--ct-surface);
  border: 1px solid var(--ct-border);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: transform var(--ct-dur) var(--ct-ease-out), border-color var(--ct-dur) var(--ct-ease-out);
}
.ct-insight-card:hover {
  transform: translateY(-4px);
  border-color: var(--ct-border-gold);
}
.ct-insight-card--featured {
  grid-row: span 2;
}
.ct-insight-card__image {
  position: relative;
  width: 100%;
  background-size: cover;
  background-position: center;
  flex: 1;
  min-height: 200px;
  overflow: hidden;
}
.ct-insight-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 30%, rgba(7, 11, 22, 0.85));
  transition: opacity var(--ct-dur) var(--ct-ease-out);
}
.ct-insight-card:hover .ct-insight-card__image {
  transform: scale(1);
}
.ct-insight-card__image > div {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 1.4s var(--ct-ease-out);
}
.ct-insight-card:hover .ct-insight-card__image > div {
  transform: scale(1.08);
}
.ct-insight-card__content {
  position: relative;
  z-index: 1;
  padding: var(--ct-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-3);
}
.ct-insight-card--featured .ct-insight-card__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--ct-space-7);
}
.ct-insight-card__tag {
  align-self: flex-start;
}
.ct-insight-card__title {
  font-family: var(--ct-font-display);
  font-size: var(--ct-fs-h4);
  font-weight: 600;
  color: var(--ct-text);
  line-height: 1.3;
  margin: 0;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ct-insight-card--featured .ct-insight-card__title {
  font-size: 28px;
  -webkit-line-clamp: 3;
}
.ct-insight-card__date {
  color: var(--ct-text-mute);
  font-size: var(--ct-fs-xs);
  letter-spacing: 0.05em;
}

/* ct-final-cta 已抽到 ct.css 公共组件 */

/* ==================== Responsive ==================== */
@media (max-width: 991px) {
  .ct-hero__inner {
    grid-template-columns: 1fr;
    gap: var(--ct-space-7);
    text-align: center;
  }
  .ct-hero__content { align-items: center; max-width: 100%; }
  .ct-hero__lead { margin: 0 auto; }
  .ct-hero__visual { order: -1; }
  .ct-skyline { width: 400px; }
  .ct-skyline__logo { height: 260px; }

  .ct-stats__grid { grid-template-columns: repeat(2, 1fr); gap: var(--ct-space-6); }
  .ct-services__grid { grid-template-columns: 1fr; }

  .ct-about-block__grid {
    grid-template-columns: 1fr;
    gap: var(--ct-space-6);
  }
  .ct-about-block__media { aspect-ratio: 16/10; max-width: 600px; margin: 0 auto; }

  .ct-section__header--row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--ct-space-4);
  }
  .ct-insights__grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    min-height: auto;
  }
  .ct-insight-card--featured { grid-row: auto; }
  .ct-insight-card__image { min-height: 240px; }
}

@media (max-width: 640px) {
  .ct-hero { min-height: auto; padding-top: calc(var(--ct-header-h) + var(--ct-space-7)); }
  .ct-skyline { width: 320px; }
  .ct-skyline__logo { height: 200px; }
  .ct-stats__grid { grid-template-columns: 1fr 1fr; gap: var(--ct-space-5); }
  .ct-stat { padding-left: var(--ct-space-3); }
  .ct-final-cta { padding: var(--ct-space-9) 0; }
}