/* ==========================================================================
   GVTL 官网样式 —— Linear / Modern 鎏金版
   设计语言：近黑 #050506/#020203 + 品牌金 #ab8855 点缀（与 trust-web 同源）；
   分层环境光（径向渐变 + 噪点 + 64px 网格 + 漂浮光斑）；渐变标题文字；
   多层阴影；不对称 bento；鼠标追光 / 滚动视差 / 入场动画见 js/linear.js。
   字体：Inter（标题/正文，自托管）+ JetBrains Mono（标签）；与 style.css 互斥加载。
   ========================================================================== */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/inter-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/inter-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../assets/fonts/inter-600.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/jetbrains-mono-500.woff2') format('woff2');
}

/* ---------- 设计令牌 ---------- */
:root {
  /* 近黑分层（永不用纯黑/纯白） */
  --bg-deep: #020203;
  --bg-base: #050506;
  --bg-elevated: #0a0a0c;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  /* 文本 */
  --fg: #EDEDEF;
  --fg-muted: #8A8F98;
  --fg-subtle: rgba(255, 255, 255, 0.6);
  /* 品牌金点缀（trust-web 同源） */
  --accent: #ab8855;
  --accent-bright: #c4a06e;
  --accent-rgb: 171, 136, 85;
  --accent-text: #d6bd93;
  /* 金底上的前景文字：深棕黑（白字在 #ab8855 上对比度仅 ~3:1，不达标） */
  --accent-contrast: #1a1208;
  --accent-glow: rgba(var(--accent-rgb), 0.3);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(var(--accent-rgb), 0.3);
  /* 漂浮光斑配色（暖金系，随强调色派生） */
  --blob-2-bg: linear-gradient(135deg, rgba(171, 136, 85, .16), rgba(200, 150, 90, .1));
  --blob-3-bg: linear-gradient(225deg, rgba(171, 136, 85, .13), rgba(160, 120, 70, .09));
  --danger: #f87171;
  --header-h: 64px;
  --maxw: 1128px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, 'PingFang SC', 'Microsoft YaHei', monospace;
  /* 多层阴影公式（描边高光 + 柔散 + 环境暗部） */
  --shadow-card: 0 0 0 1px rgba(255,255,255,.06), 0 2px 20px rgba(0,0,0,.4), 0 0 40px rgba(0,0,0,.2);
  --shadow-card-hover: 0 0 0 1px rgba(255,255,255,.1), 0 8px 40px rgba(0,0,0,.5), 0 0 80px rgba(var(--accent-rgb),.1);
  --shadow-cta: 0 0 0 1px rgba(var(--accent-rgb),.5), 0 4px 12px rgba(var(--accent-rgb),.3), inset 0 1px 0 0 rgba(255,255,255,.2);
  --shadow-cta-hover: 0 0 0 1px rgba(var(--accent-rgb),.6), 0 6px 20px rgba(var(--accent-rgb),.4), inset 0 1px 0 0 rgba(255,255,255,.25);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* expo-out */
  /* ---- 主题化表面/氛围 token（浅色主题 linear-light.css 覆盖同一组变量） ---- */
  --page-bg: radial-gradient(ellipse 120% 70% at 50% -10%, #0a0a0f 0%, var(--bg-base) 55%, var(--bg-deep) 100%);
  --grid-line: rgba(255, 255, 255, 0.02);
  --hero-title-grad: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.94) 55%, rgba(255,255,255,.68) 100%);
  --hero-sheen: rgba(255, 255, 255, 0.18);
  --btn-outline-bg: rgba(255, 255, 255, 0.05);
  --btn-outline-ring: rgba(255, 255, 255, 0.1);
  --btn-outline-bg-hover: rgba(255, 255, 255, 0.08);
  --btn-outline-ring-hover: rgba(255, 255, 255, 0.16);
  --header-bg: rgba(5, 5, 6, 0.65);
  --header-bg-scrolled: rgba(5, 5, 6, 0.85);
  --nav-mobile-bg: rgba(5, 5, 6, 0.95);
  --logo-filter: brightness(0) invert(1);
  --input-bg: rgba(255, 255, 255, 0.05);
  --input-border: rgba(255, 255, 255, 0.12);
  --input-border-hover: rgba(255, 255, 255, 0.2);
  --input-bg-hover: rgba(255, 255, 255, 0.08);
  --option-bg: #0d0d11;
  --mock-bg: linear-gradient(180deg, #0d0d11 0%, var(--bg-elevated) 100%);
  --mock-border: rgba(255, 255, 255, 0.08);
  --mock-shadow: 0 0 0 1px rgba(255,255,255,.04), 0 24px 80px rgba(0,0,0,.6), 0 0 120px rgba(var(--accent-rgb),.12);
  --mock-muted: rgba(255, 255, 255, 0.16);
  --mock-row-bg: rgba(255, 255, 255, 0.02);
  --mock-up: #6fcf97;
  --card-bg: linear-gradient(180deg, rgba(255,255,255,.07) 0%, rgba(255,255,255,.02) 100%);
  --panel-soft-bg: linear-gradient(180deg, rgba(255,255,255,.03), transparent);
  --img-overlay: linear-gradient(180deg, rgba(5,5,6,.22) 0%, transparent 36%, rgba(5,5,6,.58) 100%);
  --img-filter: saturate(.82) brightness(.88);
  --img-filter-hover: saturate(1) brightness(1);
  --scrollbar-thumb: #1c1c22;
  --scrollbar-thumb-hover: #2a2a33;
  --switch-hover-bg: rgba(255, 255, 255, 0.06);
  --hairline-grad: rgba(255, 255, 255, 0.1);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  background: var(--bg-base);
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--fg);
  background:
    var(--page-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* 分层背景：噪点 + 64px 网格（挂在 body 伪元素上，固定不随滚动） */
body::before {
  content: '';
  position: fixed; inset: 0;
  z-index: -2;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.015;
  pointer-events: none;
}
body::after {
  content: '';
  position: fixed; inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
  pointer-events: none;
}

/* 漂浮环境光斑：大面积高模糊，缓慢浮动 */
.bg-blobs { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; animation: blob-float 9s ease-in-out infinite; }
.blob-primary {
  top: -400px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 640px;
  background: var(--blob-primary-bg, rgba(var(--accent-rgb), 0.25));
  filter: blur(150px);
}
.blob-secondary {
  top: 18%; left: -260px;
  width: 600px; height: 620px;
  background: var(--blob-2-bg);
  filter: blur(120px);
  animation-delay: -3s;
}
.blob-tertiary {
  top: 8%; right: -220px;
  width: 520px; height: 560px;
  background: var(--blob-3-bg);
  filter: blur(100px);
  animation-delay: -6s;
}
.blob-bottom {
  bottom: -300px; left: 30%;
  width: 700px; height: 480px;
  background: var(--blob-bottom-bg, rgba(var(--accent-rgb), 0.1));
  filter: blur(130px);
  animation: blob-pulse 12s ease-in-out infinite;
}
@keyframes blob-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-20px) rotate(1deg); }
}
@keyframes blob-pulse {
  0%, 100% { opacity: .8; transform: scale(1); }
  50%      { opacity: 1;  transform: scale(1.06); }
}
/* 主光斑的浮动不能覆盖 translateX 定位，单独处理 */
.blob-primary { animation-name: blob-float-center; }
@keyframes blob-float-center {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(-20px); }
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 .5em;
  color: var(--fg);
}
p { margin: 0 0 1em; }
a { color: var(--fg); text-decoration: none; transition: color .2s var(--ease-out); }
a:hover { color: var(--accent-bright); }
img { max-width: 100%; display: block; }

::selection { background: rgba(var(--accent-rgb), 0.4); color: #fff; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

a:focus-visible, button:focus-visible, select:focus-visible,
input:focus-visible, textarea:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.7);
  outline-offset: 2px;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; }

/* ---------- 区块通用：细线分隔 + 渐变发丝线 + mono 编号标签 ---------- */
.section { padding: 104px 0; position: relative; }
.section + .section::before,
.site-footer::before {
  content: '';
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(1128px, calc(100% - 48px)); height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline-grad), transparent);
}
.site-footer::before { position: absolute; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 18px;
}
.section-tag::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
.section-head { margin-bottom: 48px; }
.section-head h2 { font-size: clamp(30px, 4vw, 44px); }
/* 渐变标题文字（垂直向，白 → 半透明） */
.section-head h2, .hero-title {
  background: var(--hero-title-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--fg); /* 回退 */
}
.section-subtitle { color: var(--fg-muted); font-size: 16.5px; margin: 0; max-width: 620px; }
.section-head.center { text-align: center; }
.section-head.center .section-subtitle { margin: 0 auto; }

/* ---------- 按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
  border: 0;
  overflow: hidden;
  transition: all .2s var(--ease-out);
  text-align: center;
  font-family: var(--font-body);
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: var(--shadow-cta);
}
.btn-primary:hover {
  background: var(--accent-bright);
  color: var(--accent-contrast);
  box-shadow: var(--shadow-cta-hover);
  transform: translateY(-1px);
}
.btn-primary:active { transform: scale(0.98); box-shadow: var(--shadow-cta); }
/* 悬停扫光 */
.btn-primary::after {
  content: '';
  position: absolute; top: 0; bottom: 0; left: 0; width: 40%;
  background: linear-gradient(100deg, transparent, var(--hero-sheen), transparent);
  transform: translateX(-160%) skewX(-18deg);
  transition: transform .6s var(--ease-out);
}
.btn-primary:hover::after { transform: translateX(320%) skewX(-18deg); }

.btn-outline {
  background: var(--btn-outline-bg);
  color: var(--fg);
  box-shadow: inset 0 0 0 1px var(--btn-outline-ring);
}
.btn-outline:hover {
  background: var(--btn-outline-bg-hover);
  color: var(--fg);
  box-shadow: inset 0 0 0 1px var(--btn-outline-ring-hover), 0 4px 16px rgba(0,0,0,.3);
  transform: translateY(-1px);
}
.btn-outline:active { transform: scale(0.98); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--header-bg);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color .25s var(--ease-out), background .25s var(--ease-out);
}
.site-header.scrolled {
  background: var(--header-bg-scrolled);
  border-bottom-color: var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 16px; }
.brand { display: flex; align-items: center; }
.brand-logo { height: 34px; width: auto; filter: var(--logo-filter); }

.main-nav { display: flex; align-items: center; gap: 26px; }
/* :not(.btn) 排除按钮——避免链接灰色字色覆盖 .btn-primary（优先级问题曾致金底灰字） */
.main-nav > a:not(.btn) { color: var(--fg-muted); font-size: 14px; font-weight: 500; }
.main-nav > a:not(.btn):hover { color: var(--fg); }
.main-nav > .btn-login { padding: 7px 16px; font-size: 13.5px; }

.header-tools { display: flex; align-items: center; gap: 12px; }
.lang-select {
  appearance: none;
  padding: 7px 30px 7px 12px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background-color: var(--input-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23ab8855' stroke-width='2.2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-body);
  color: var(--fg);
  cursor: pointer;
  transition: border-color .2s var(--ease-out), background-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.lang-select:hover { border-color: var(--input-border-hover); background-color: var(--input-bg-hover); }
.lang-select:focus-visible {
  outline: none;
  border-color: var(--border-accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.25);
}
/* 下拉选项：跟随深色主题（Windows 原生下拉为亮色时兜底） */
.lang-select option { background: var(--option-bg); color: var(--fg); }

/* 汉堡按钮 */
.menu-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 38px; height: 38px; background: none; border: 0; cursor: pointer; padding: 0; }
.menu-toggle span { display: block; width: 20px; height: 1.5px; background: var(--fg); margin: 0 auto; transition: all .2s var(--ease-out); border-radius: 2px; }
.menu-toggle[aria-expanded='true'] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded='true'] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ==========================================================================
   Hero：居中大字 + 徽章 + 产品模拟窗口（视差由 js/linear.js 驱动）
   ========================================================================== */
.hero {
  position: relative;
  margin-top: var(--header-h);
  padding: 150px 0 110px;
  text-align: center;
  overflow: hidden;
}
.hero-core { position: relative; z-index: 1; will-change: transform, opacity; }

/* 徽章：品牌金描边胶囊 */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.08);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 26px;
}
.hero-eyebrow::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 8px var(--accent-glow);
}
.hero-title {
  font-size: clamp(42px, 7vw, 82px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 0 auto 22px;
  max-width: 900px;
}
.hero-subtitle {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--fg-muted);
  max-width: 620px;
  margin: 0 auto 38px;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- 产品模拟窗口（纯装饰，aria-hidden） ---------- */
.hero-visual { position: relative; z-index: 1; max-width: 900px; margin: 72px auto 0; will-change: transform; }
.hero-visual::before {
  content: '';
  position: absolute;
  inset: -8% -12%;
  background: radial-gradient(ellipse 60% 55% at 50% 42%, rgba(var(--accent-rgb),.22), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}
.mock {
  position: relative;
  border-radius: 16px;
  background: var(--mock-bg);
  border: 1px solid var(--mock-border);
  box-shadow: var(--mock-shadow);
  overflow: hidden;
  text-align: left;
}
.mock-titlebar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.mock-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--mock-muted); }
.mock-titlebar .mock-label {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--fg-subtle);
}
.mock-body { display: grid; grid-template-columns: 168px 1fr; min-height: 320px; }
.mock-aside { border-right: 1px solid var(--border); padding: 16px 12px; display: flex; flex-direction: column; gap: 6px; }
/* 侧边菜单项（示意） */
.mock-aside .m-nav {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 12.5px;
  color: var(--fg-muted);
  white-space: nowrap;
}
.mock-aside .m-nav i { width: 6px; height: 6px; border-radius: 50%; background: var(--mock-muted); flex: none; }
.mock-aside .m-nav.on {
  color: var(--accent-text);
  background: rgba(var(--accent-rgb),.14);
  box-shadow: inset 0 0 0 1px var(--border-accent);
}
.mock-aside .m-nav.on i { background: var(--accent-bright); box-shadow: 0 0 8px var(--accent-glow); }
.mock-main { padding: 20px 22px; display: flex; flex-direction: column; gap: 16px; }
/* 总资产行 */
.m-balance { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.m-cap { font-size: 11px; letter-spacing: .05em; color: var(--fg-subtle); }
.m-num { font-family: var(--font-mono); font-size: 21px; font-weight: 500; color: var(--fg); letter-spacing: .01em; }
.m-chip {
  font-size: 10.5px; padding: 3px 9px; border-radius: 999px;
  color: var(--mock-up); background: rgba(111, 207, 151, .1); box-shadow: inset 0 0 0 1px rgba(111, 207, 151, .25);
}
/* 币种分布：分段条 + 图例 */
.m-alloc { display: flex; flex-direction: column; gap: 8px; }
.m-alloc-bar { display: flex; gap: 3px; height: 8px; }
.m-alloc-bar i { height: 100%; width: var(--w, 30%); border-radius: 4px; }
.m-alloc-bar i:nth-child(1) { background: linear-gradient(90deg, rgba(var(--accent-rgb),.85), rgba(var(--accent-rgb),.6)); }
.m-alloc-bar i:nth-child(2) { background: rgba(var(--accent-rgb),.32); }
.m-alloc-bar i:nth-child(3) { background: var(--mock-muted); }
.m-alloc-legend { display: flex; gap: 16px; font-size: 11px; color: var(--fg-muted); font-family: var(--font-mono); }
.m-alloc-legend span { display: inline-flex; align-items: center; gap: 6px; }
.m-alloc-legend i { width: 7px; height: 7px; border-radius: 2px; flex: none; }
.m-alloc-legend span:nth-child(1) i { background: rgba(var(--accent-rgb),.85); }
.m-alloc-legend span:nth-child(2) i { background: rgba(var(--accent-rgb),.32); }
.m-alloc-legend span:nth-child(3) i { background: var(--mock-muted); }
/* 近期交易列表（示意） */
.m-tx { display: flex; flex-direction: column; gap: 8px; }
.m-tx-row {
  display: flex; align-items: center; gap: 11px;
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--mock-row-bg);
  border: 1px solid var(--border);
}
.m-tx-row .m-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mock-muted); flex: none; }
.m-tx-row .m-dot.up { background: var(--mock-up); box-shadow: 0 0 8px rgba(111, 207, 151, .35); }
.m-tx-row .m-tx-label { flex: 1; font-size: 12.5px; color: var(--fg-muted); white-space: nowrap; }
.m-tx-row .m-amt { font-family: var(--font-mono); font-size: 12px; color: var(--fg-muted); }
.m-tx-row .m-amt.up { color: var(--mock-up); }
.mock-foot {
  display: flex; align-items: center; gap: 8px; padding: 12px 20px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: .12em;
  color: var(--fg-subtle);
}
.mock-foot .m-demo { margin-left: auto; letter-spacing: .06em; opacity: .75; }

/* ==========================================================================
   关于我们：大圆角玻璃面板内左右分栏（带鼠标追光）
   ========================================================================== */
.panel {
  position: relative;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
/* 鼠标追光（js/linear.js 设置 --mx/--my） */
.spotlight::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), rgba(var(--accent-rgb),.15), transparent 65%);
  opacity: 0;
  transition: opacity .3s var(--ease-out);
  pointer-events: none;
}
.spotlight:hover::before { opacity: 1; }

.about-panel { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.about-panel-left {
  padding: 44px 48px;
  border-right: 1px solid var(--border);
  background: var(--panel-soft-bg);
}
.about-panel-left h2 { font-size: clamp(26px, 3vw, 34px); }
.about-panel-right { padding: 44px 48px; }
.about-text { color: var(--fg-muted); font-size: 16px; margin: 0 0 14px; }
.about-text + .about-text { margin-bottom: 26px; }
.badges { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; }
.badges li {
  padding: 7px 16px;
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  color: var(--accent-text);
  font-size: 13px;
  font-weight: 500;
  background: rgba(var(--accent-rgb), 0.08);
}

/* 关于面板下方：香港城市实景横幅（装饰，压暗融入深色底） */
.about-media {
  margin-top: 16px;
  position: relative;
  height: 340px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.about-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 58%;
  display: block;
  filter: var(--img-filter);
  transform: scale(1.01);
  transition: transform .8s var(--ease-out), filter .8s var(--ease-out);
}
.about-media::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--img-overlay);
  pointer-events: none;
}
.about-media:hover img { transform: scale(1.04); filter: var(--img-filter-hover); }

/* ==========================================================================
   服务：6 列不对称 bento（4×2 主卡 + 2 张 2 列卡）
   ========================================================================== */
.cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(196px, auto);
  gap: 16px;
}
.card {
  position: relative;
  --card-pad: 26px;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: var(--card-pad);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), border-color .25s var(--ease-out);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card-hover);
}
.card-sm { grid-column: span 2; }
/* 主卡：跨 4 列 2 行 */
.card-hero { grid-column: span 4; grid-row: span 2; --card-pad: 32px; }
.card-hero h3 { font-size: 22px; }
.card-hero p { max-width: 480px; }
.card h3 { font-size: 17.5px; margin: 18px 0 8px; }
.card p { color: var(--fg-muted); margin: 0; font-size: 14.5px; flex: 1; }

/* 卡片顶部实景图：向卡边出血（随 --card-pad 自动对齐），卡内文字区不受影响 */
.card-media {
  margin: calc(-1 * var(--card-pad)) calc(-1 * var(--card-pad)) 24px;
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  flex: none;
}
.card-hero .card-media { aspect-ratio: 21 / 9; }
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: var(--img-filter);
  transform: scale(1.01); /* 稍微放大避免 cover 边缘缝隙，也是悬停缩放的基准 */
  transition: transform .6s var(--ease-out), filter .6s var(--ease-out);
}
/* 上下压暗渐变：实景与深色卡面自然融合 */
.card-media::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--img-overlay);
  pointer-events: none;
}
.card:hover .card-media img { transform: scale(1.05); filter: var(--img-filter-hover); }

.card-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: rgba(var(--accent-rgb), 0.12);
  border: 1px solid var(--border-accent);
  color: var(--accent-text);
  display: flex; align-items: center; justify-content: center;
  flex: none;
}
.card-icon svg { width: 21px; height: 21px; }
/* 主卡底部插图（原装饰柱状图位置）：内嵌圆角，压暗融入卡面 */
.card-hero .card-figure {
  margin-top: 24px;
  position: relative;
  aspect-ratio: 21 / 9;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  flex: none;
}
.card-hero .card-figure img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 42%;
  display: block;
  filter: var(--img-filter);
  transform: scale(1.01);
  transition: transform .6s var(--ease-out), filter .6s var(--ease-out);
}
.card-hero .card-figure::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--img-overlay);
  pointer-events: none;
}
.card-hero:hover .card-figure img { transform: scale(1.05); filter: var(--img-filter-hover); }
/* 中卡：跨 4 列单行（家族办公室） */
.card-md { grid-column: span 4; }

/* 专业协作 · 全球资源整合：服务区收尾全宽面板 */
.collab-panel {
  margin-top: 16px;
  padding: 30px 34px;
}
.collab-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.collab-head h3 { font-size: 18px; margin: 0; }
.collab-panel p { color: var(--fg-muted); font-size: 14.5px; line-height: 1.75; margin: 0 0 10px; }
.collab-panel p:last-child { margin-bottom: 0; }

/* 我们的承诺：居中玻璃面板 */
.commitment-panel {
  padding: 48px 44px 44px;
  text-align: center;
}
.commitment-panel .section-tag { display: inline-block; margin-bottom: 14px; }
.commitment-panel h2 { font-size: clamp(24px, 2.6vw, 30px); margin: 0 0 16px; }
.commitment-text {
  color: var(--fg-muted);
  font-size: 15.5px;
  line-height: 1.9;
  margin: 0 auto;
  max-width: 640px;
}

/* ==========================================================================
   FAQ：居中窄栏 + 细线分隔列表（非卡片）
   ========================================================================== */
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%; text-align: left; background: none; border: 0; padding: 22px 4px;
  font-size: 15.5px; font-weight: 500; color: var(--fg); cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  font-family: var(--font-body);
  transition: color .2s var(--ease-out);
}
.faq-question:hover { color: var(--accent-bright); }
.faq-icon { position: relative; flex: 0 0 16px; width: 16px; height: 16px; transition: transform .25s var(--ease-out); }
.faq-icon::before, .faq-icon::after { content: ''; position: absolute; background: var(--fg-muted); border-radius: 2px; transition: background .2s; }
.faq-icon::before { top: 50%; left: 0; right: 0; height: 1.5px; transform: translateY(-50%); }
.faq-icon::after { left: 50%; top: 0; bottom: 0; width: 1.5px; transform: translateX(-50%); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-icon::before, .faq-item.open .faq-icon::after { background: var(--accent-bright); }
.faq-item.open .faq-question { color: var(--accent-bright); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s var(--ease-out); }
.faq-answer > p { overflow: hidden; margin: 0; padding: 0 4px; color: var(--fg-muted); }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-item.open .faq-answer > p { padding-bottom: 24px; }

/* ==========================================================================
   联系我们：封装式大面板（信息 + 表单）
   ========================================================================== */
.contact-panel { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.contact-info-col {
  padding: 40px 44px;
  border-right: 1px solid var(--border);
  background: var(--panel-soft-bg);
}
.contact-info { margin: 0; }
.contact-info > div { padding: 16px 0; border-bottom: 1px solid var(--border); }
.contact-info > div:last-child { border-bottom: 0; }
.contact-info dt {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-subtle);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 7px;
}
.contact-info dd { margin: 0; font-size: 14.5px; font-family: var(--font-mono); color: var(--fg); font-weight: 500; word-break: break-word; }

.contact-form-col { padding: 40px 44px; }
.contact-form .form-row { margin-bottom: 16px; }
.contact-form label { display: block; font-size: 13px; font-weight: 500; color: var(--fg-muted); margin-bottom: 7px; }
.contact-form input, .contact-form textarea {
  width: 100%; min-height: 44px; padding: 11px 13px;
  border: 1px solid var(--input-border); border-radius: 8px;
  font-size: 14.5px; font-family: var(--font-body); color: var(--fg);
  background: var(--input-bg);
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--fg-subtle); }
.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb),.18);
}
.contact-form input.invalid, .contact-form textarea.invalid { border-color: var(--danger); }
.contact-form .btn { margin-top: 4px; width: 100%; }
.form-feedback { min-height: 1.5em; margin: 12px 0 0; font-size: 13.5px; color: var(--accent-text); }
.form-feedback.error { color: var(--danger); }

/* ==========================================================================
   Footer：最深一层
   ========================================================================== */
.site-footer { position: relative; background: var(--bg-deep); color: var(--fg-muted); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid var(--border); }
.footer-brand .brand-logo { height: 34px; margin-bottom: 14px; filter: var(--logo-filter); }
.footer-brand p { color: var(--fg-muted); font-size: 14px; max-width: 320px; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fg-subtle);
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; font-size: 14px; }
.footer-col a { color: var(--fg-muted); }
.footer-col a:hover { color: var(--accent-bright); }
.footer-bottom { padding-top: 24px; }
.footer-bottom .disclaimer { font-size: 12px; color: var(--fg-subtle); margin-bottom: 8px; }
.footer-bottom .copyright { font-size: 13px; color: var(--fg-muted); margin: 0; }

/* ==========================================================================
   入场动画（仅 html.fx 时启用，js/linear.js 加类）
   ========================================================================== */
html.fx .reveal { opacity: 0; transform: translateY(24px); }
html.fx .reveal.revealed {
  opacity: 1; transform: translateY(0);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
  transition-delay: var(--d, 0s);
}

/* ==========================================================================
   风格切换浮标（三向，临时预览辅助，选定风格后移除）
   ========================================================================== */
.style-switch {
  position: fixed;
  right: 16px; bottom: 16px;
  z-index: 200;
  display: flex; flex-direction: column; gap: 4px;
  padding: 8px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--nav-mobile-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}
.style-switch a, .style-switch span {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px;
  border-radius: 7px;
  font-size: 12px; font-weight: 500;
  color: var(--fg-muted);
  white-space: nowrap;
  transition: background .15s var(--ease-out), color .15s var(--ease-out);
}
.style-switch a:hover { background: var(--switch-hover-bg); color: var(--fg); }
.style-switch span {
  background: rgba(var(--accent-rgb), .14);
  color: var(--accent-text);
  box-shadow: inset 0 0 0 1px var(--border-accent);
}
.style-switch span::before, .style-switch a::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: .9;
}
.style-switch span::before { background: var(--accent-bright); box-shadow: 0 0 6px var(--accent-glow); }

/* ==========================================================================
   动效偏好：尊重系统减少动效设置
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob { animation: none; }
  .btn-primary::after { display: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1024px) {
  /* bento：2 列过渡形态 */
  .cards { grid-template-columns: repeat(2, 1fr); }
  .card-hero { grid-column: span 2; grid-row: span 1; }
  .card-sm { grid-column: span 1; }
  .card-md { grid-column: span 2; }
}

@media (max-width: 900px) {
  .about-panel, .contact-panel { grid-template-columns: 1fr; }
  .about-panel-left, .contact-info-col { border-right: 0; border-bottom: 1px solid var(--border); }
  .about-panel-right, .contact-form-col { padding: 32px; }
  .about-panel-left, .contact-info-col { padding: 32px; }
  .about-media { height: 260px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: var(--nav-mobile-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 14px 24px 22px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .2s var(--ease-out), opacity .2s var(--ease-out);
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; }
  .main-nav > a:not(.btn) { padding: 12px 6px; border-bottom: 1px solid var(--border); }
  .main-nav > .btn-login { margin-top: 10px; text-align: center; }
  .hero { padding: 96px 0 72px; }
  .hero-visual { margin-top: 52px; }
  .mock-body { grid-template-columns: 1fr; min-height: 0; }
  .mock-aside { display: none; }
  .section { padding: 72px 0; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 18px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .cards { grid-template-columns: 1fr; }
  .card-hero, .card-sm, .card-md { grid-column: auto; }
  .about-media { height: 200px; }
  /* 示意窗窄屏适配：交易描述允许换行，图例收窄 */
  .m-tx-row .m-tx-label { white-space: normal; }
  .m-alloc-legend { gap: 10px; flex-wrap: wrap; }
  .m-num { font-size: 17px; }
}