/* ============================================================
   GPG · Global Profit Grid · AI 量化收益网络
   Deep fintech theme — gold on navy · Fully responsive
   ============================================================ */

:root {
  --bg: #070b14;
  --bg-2: #0a101f;
  --bg-3: #0d1526;
  --card: rgba(255, 255, 255, 0.035);
  --card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(246, 196, 83, 0.35);

  --gold: #f6c453;
  --gold-2: #e29b3a;
  --gold-soft: #f9d98a;
  --green: #3ee6a7;
  --green-2: #22c58d;

  --text: #e9edf6;
  --text-2: #a7b3c9;
  --text-3: #6d7a92;

  --grad-gold: linear-gradient(135deg, #f9d98a 0%, #f6c453 40%, #e29b3a 100%);
  --grad-card: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.015));

  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
b { font-weight: 700; }

.container {
  width: min(1180px, 92vw);
  margin: 0 auto;
  position: relative;
}

/* ---------- 背景网格 ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
}

main, footer { position: relative; z-index: 1; }

/* ============================================================
   按钮 / 通用元素
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
  white-space: nowrap;
}
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }

.btn-primary {
  background: var(--grad-gold);
  color: #131007;
  box-shadow: 0 8px 26px rgba(230, 160, 60, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(230, 160, 60, 0.45); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  color: var(--gold-soft);
  font-size: 13px;
  letter-spacing: 0.5px;
}
.pill .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

/* ============================================================
   导航栏
   ============================================================ */
/* ============================================================
   行情滚动条
   ============================================================ */
.ticker {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 34px;
  z-index: 150;
  display: flex;
  align-items: center;
  background: #05080f;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.ticker-track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: tickerScroll 60s linear infinite;
}
.ticker:hover .ticker-track { animation-play-state: paused; }
@keyframes tickerScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.ticker-track-group { display: flex; align-items: center; flex-shrink: 0; }
.ticker-item {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 0 20px;
  font-size: 12.5px;
  white-space: nowrap;
}
.ticker-sym { font-weight: 700; color: var(--text); }
.ticker-price { color: var(--text-2); font-variant-numeric: tabular-nums; }
.ticker-chg { font-weight: 600; }
.ticker-chg.up { color: var(--green); }
.ticker-chg.down { color: #ff5c5c; }
.ticker-label {
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #131007;
  background: var(--grad-gold);
  margin: 0 14px 0 4px;
  flex-shrink: 0;
}
.ticker-label.stock { background: linear-gradient(135deg, #4fa3ff, #2b6fdd); color: #fff; }

/* ============================================================
   导航栏
   ============================================================ */
.site-header {
  position: fixed;
  top: 34px; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo {
  display: block;
  height: 34px;
  width: 34px;
  object-fit: contain;
  flex-shrink: 0;
  mix-blend-mode: lighten; /* 黑底透明化,与深色导航融合 */
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 20px; font-weight: 800; letter-spacing: 1px; }
.brand-sub { font-size: 10.5px; color: var(--text-3); letter-spacing: 1.6px; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--text-2);
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--gold); background: rgba(246,196,83,0.08); }

.nav-actions { display: flex; align-items: center; gap: 14px; }

/* 语言切换按钮 */
.lang-toggle {
  padding: 8px 14px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.lang-toggle:hover { color: var(--gold); border-color: var(--gold); background: rgba(246,196,83,0.08); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 166px 0 90px;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  background: radial-gradient(ellipse at center, rgba(230,160,60,0.16) 0%, rgba(230,160,60,0.05) 40%, transparent 70%);
  pointer-events: none;
  animation: breathe 6s ease-in-out infinite;
}
@keyframes breathe { 0%,100% { opacity:.7; } 50% { opacity:1; } }

.hero-inner { display: flex; justify-content: center; text-align: center; }
.hero-content { max-width: 860px; }

.hero h1 {
  font-size: clamp(38px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: 1px;
  margin: 26px 0 22px;
}
.hero h1 b {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-2);
  max-width: 640px;
  margin: 0 auto 36px;
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 60px;
}
.stat {
  padding: 22px 14px;
  border-radius: var(--radius-sm);
  background: var(--grad-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: border-color .3s, transform .3s;
}
.stat:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.stat-num {
  display: block;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-label { font-size: 12.5px; color: var(--text-3); margin-top: 4px; display: block; }

.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--border);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 7px;
}
.scroll-hint span {
  width: 4px; height: 8px;
  border-radius: 2px;
  background: var(--gold);
  animation: scrollDown 1.8s infinite;
}
@keyframes scrollDown { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(14px); opacity: 0; } 100% { opacity: 0; } }

/* ============================================================
   通用 Section
   ============================================================ */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-2); }
section[id] { scroll-margin-top: 116px; }

.section-head { text-align: center; max-width: 700px; margin: 0 auto 64px; }
.section-tag {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 3px;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
  opacity: .9;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.25;
}
.section-sub { color: var(--text-2); margin-top: 14px; font-size: 16px; }
.section-note { text-align: center; color: var(--text-3); font-size: 13px; margin-top: 36px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

/* ============================================================
   收益来源
   ============================================================ */
.source-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.source-card { text-align: left; }
.source-card h3 { font-size: 18px; margin: 16px 0 8px; }
.source-card p { color: var(--text-2); font-size: 14.5px; }
.source-card p.big {
  font-size: 30px;
  font-weight: 800;
  color: var(--gold);
  margin: 2px 0 8px;
}
.source-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(246,196,83,0.1);
  border: 1px solid rgba(246,196,83,0.2);
  color: var(--gold);
}
.source-icon svg { width: 24px; height: 24px; }
.source-card-highlight {
  background: linear-gradient(160deg, rgba(246,196,83,0.12), rgba(226,155,58,0.05) 60%);
  border-color: rgba(246,196,83,0.35);
}

/* ============================================================
   产品计划
   ============================================================ */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}
.plan-card { display: flex; flex-direction: column; position: relative; }
.plan-featured {
  border-color: rgba(246,196,83,0.45);
  background: linear-gradient(180deg, rgba(246,196,83,0.09), rgba(255,255,255,0.015) 55%);
  transform: scale(1.03);
}
.plan-featured:hover { transform: scale(1.03) translateY(-6px); }
.plan-strat-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 11.5px;
  letter-spacing: 1px;
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  border: 1px solid transparent;
}
.plan-strat-tag.risk-low {
  color: var(--green);
  background: rgba(62,230,167,0.08);
  border-color: rgba(62,230,167,0.35);
}
.plan-strat-tag.risk-mid {
  color: var(--gold);
  background: rgba(246,196,83,0.08);
  border-color: rgba(246,196,83,0.35);
}
.plan-strat-tag.risk-high {
  color: #ff9d5c;
  background: rgba(255,157,92,0.08);
  border-color: rgba(255,157,92,0.35);
}

.plan-strat-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text);
}
.plan-strat-type {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.5px;
  color: var(--gold-soft);
  margin: 4px 0 12px;
}
.plan-strat-desc {
  font-size: 13.5px;
  color: var(--text-2);
  margin-bottom: 18px;
  flex: 1;
}
.plan-featured .plan-strat-name { color: var(--gold-soft); }

.plan-spec { margin-bottom: 22px; }
.plan-spec > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 9px 2px;
  border-bottom: 1px dashed var(--border);
}
.plan-spec dt { font-size: 13px; color: var(--text-3); flex-shrink: 0; }
.plan-spec dd { font-size: 14px; font-weight: 600; color: var(--text); }
.plan-featured .plan-spec dd { color: var(--gold-soft); }

/* ---------- 策略执行与风控 ---------- */
.strategy-note {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.note-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px 22px;
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .3s, transform .3s;
}
.note-item:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.note-icon { font-size: 26px; line-height: 1.3; }
.note-item b { display: block; font-size: 16px; margin-bottom: 4px; }
.note-item p { font-size: 13px; color: var(--text-2); }

/* ============================================================
   GPG 释放机制 (流程)
   ============================================================ */
.flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 10px;
  max-width: 980px;
  margin: 0 auto;
}
.flow-step {
  flex: 1;
  text-align: center;
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 22px;
  transition: transform .3s, border-color .3s;
}
.flow-step:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.flow-icon { font-size: 40px; margin-bottom: 14px; }
.flow-step h3 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { color: var(--text-2); font-size: 13.5px; }
.flow-arrow {
  align-self: center;
  color: var(--gold);
  flex-shrink: 0;
  opacity: .8;
  animation: slide 2s infinite;
}
.flow-arrow svg { width: 44px; height: 22px; display: block; }
@keyframes slide { 0%,100% { transform: translateX(0); } 50% { transform: translateX(6px); } }

/* ============================================================
   奖励机制
   ============================================================ */
.reward-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.reward-card { position: relative; text-align: center; padding: 36px 24px; }
.reward-no {
  position: absolute;
  top: 16px; left: 18px;
  font-size: 13px;
  font-weight: 800;
  color: var(--text-3);
  opacity: .6;
}
.reward-icon { font-size: 38px; margin-bottom: 12px; }
.reward-card h3 { font-size: 19px; margin-bottom: 6px; }
.reward-card p { color: var(--text-2); font-size: 14px; }
.reward-value {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.reward-value span { font-size: 12px; color: var(--text-3); }
.reward-value b { font-size: 30px; background: var(--grad-gold); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.reward-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 12px;
  font-size: 12px;
  color: var(--green);
  background: rgba(62,230,167,0.08);
  border: 1px solid rgba(62,230,167,0.3);
  border-radius: 999px;
}

/* ============================================================
   成功案例
   ============================================================ */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.case-card { display: flex; flex-direction: column; }
.case-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.case-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-3);
  text-transform: uppercase;
}
.case-yield { font-size: 22px; font-weight: 800; color: var(--gold); }
.case-card h3 { font-size: 20px; margin-bottom: 16px; }
.case-chain {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 700;
  color: var(--text-2);
  line-height: 1.9;
  word-break: break-word;
}
.case-chain b { background: var(--grad-gold); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.case-card-yellow { border-color: rgba(246,196,83,0.3); }
.case-foot {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 13.5px;
  color: var(--text-3);
}
.case-metric { color: var(--green); font-weight: 600; }
.case-list { margin-top: 6px; }
.case-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 2px;
  border-bottom: 1px dashed var(--border);
  font-size: 15px;
  color: var(--text-2);
}
.case-list li b { color: var(--gold); font-size: 17px; }
.case-list li:last-child { border-bottom: none; }

/* ============================================================
   生态模式
   ============================================================ */
.eco-ring {
  position: relative;
  width: min(560px, 88vw);
  aspect-ratio: 1;
  margin: 0 auto 56px;
  border-radius: 50%;
  border: 1px dashed rgba(246,196,83,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(246,196,83,0.05), transparent 70%);
  animation: rotateRing 40s linear infinite;
}
@keyframes rotateRing { to { transform: rotate(360deg); } }

.ring-center {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: var(--grad-gold);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #131007;
  box-shadow: 0 0 60px rgba(246,196,83,0.4);
  animation: none;
}
.ring-center b { font-size: 26px; letter-spacing: 2px; }
.ring-center span { font-size: 12px; font-weight: 600; }

.ring-node {
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  transform: translate(-50%, -50%) rotate(calc(var(--i) * 90deg)) translateX(calc(min(280px, 44vw))) rotate(calc(var(--i) * -90deg));
  animation: none;
}
.ring-node span {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 148px;
  padding: 12px 8px;
  text-align: center;
  background: var(--bg-3);
  border: 1px solid rgba(246,196,83,0.35);
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--gold-soft);
  white-space: nowrap;
  box-shadow: var(--shadow);
}

.eco-flow { text-align: center; }
.eco-flow h3 { font-size: 22px; margin-bottom: 20px; }
.eco-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.eco-chip {
  padding: 11px 22px;
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  transition: border-color .3s, color .3s, transform .3s;
}
.eco-chip:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.eco-arrow { color: var(--gold); font-weight: 800; font-size: 18px; }
.eco-flow p { color: var(--text-2); font-size: 14px; max-width: 720px; margin: 6px auto 0; }

/* ============================================================
   核心团队
   ============================================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.team-card { text-align: center; padding: 0; overflow: hidden; }
.team-photo-wrap {
  position: relative;
  aspect-ratio: 3 / 2; /* 三卡统一比例,保证纵向对齐 */
  background: #000; /* 黑底与照片黑色背景无缝融合 */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.team-photo-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 72px;
  font-weight: 800;
  color: var(--gold);
}
.team-photo-wrap img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain; /* 不裁切,完整显示人物 */
  object-position: center;
  display: block;
}
.team-info { padding: 22px 22px 28px; }
.team-card h3 { font-size: 19px; margin-bottom: 4px; }
.team-role {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--gold);
  margin-bottom: 12px;
}
.team-bio { font-size: 13.5px; color: var(--text-2); }

/* ============================================================
   关于 GPG
   ============================================================ */
.about-mission {
  max-width: 820px;
  margin: 0 auto 60px;
  text-align: center;
}
.about-mission blockquote {
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 700;
  line-height: 1.8;
  color: var(--text);
  border-left: 3px solid var(--gold);
  padding-left: 20px;
  text-align: left;
}
.about-mission > p { color: var(--text-2); margin-top: 18px; font-size: 15.5px; }

.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 56px; }
.about-card { text-align: center; padding: 40px 28px; }
.about-icon { font-size: 42px; margin-bottom: 16px; }
.about-card h3 { font-size: 19px; margin-bottom: 10px; }
.about-card p { color: var(--text-2); font-size: 14.5px; }
.about-card p b { color: var(--gold); }

.how-it-works { text-align: center; }
.how-it-works h3 { font-size: 22px; margin-bottom: 20px; }
.how-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 920px;
  margin: 0 auto;
}
.how-chain span {
  padding: 10px 18px;
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--text-2);
}
.how-chain span:nth-child(even) { color: var(--gold); background: none; border: none; padding: 0 2px; font-weight: 800; }

/* ============================================================
   合作伙伴 · 无缝横向滚动
   ============================================================ */
.partner-marquee {
  overflow: hidden;
  padding: 26px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.partner-track {
  display: flex;
  width: max-content;
  animation: marquee 45s linear infinite;
}
.partner-marquee:hover .partner-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.partner-track-group { display: flex; align-items: center; flex-shrink: 0; }
.partner-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  margin: 0 10px;
  flex-shrink: 0;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.partner-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.42);
}
.partner-item img {
  height: 28px;
  width: auto;
  object-fit: contain;
}
.partner-item span {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: #1b2130;
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .partner-track { animation: none; width: 100%; flex-wrap: wrap; justify-content: center; }
  .partner-track-group { flex-wrap: wrap; justify-content: center; }
}

/* ============================================================
   CTA / 页脚
   ============================================================ */
.cta {
  position: relative;
  padding: 120px 0;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}
.cta-glow {
  position: absolute;
  bottom: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse at center, rgba(62,230,167,0.12) 0%, rgba(230,160,60,0.06) 50%, transparent 75%);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 1; }
.cta h2 {
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 800;
  margin: 22px 0 14px;
}
.cta p { color: var(--text-2); font-size: 16px; margin-bottom: 34px; }

.site-footer {
  background: #060a12;
  border-top: 1px solid var(--border);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand p { color: var(--text-3); font-size: 14px; margin-top: 14px; }
.footer-col h4 { font-size: 14px; color: var(--text); margin-bottom: 14px; letter-spacing: 1px; }
.footer-col a, .footer-col p { display: block; color: var(--text-3); font-size: 14px; padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: var(--gold); }

.footer-legal { border-top: 1px solid var(--border); padding: 22px 0 26px; }
.footer-legal .disclaimer { color: var(--text-3); font-size: 12px; line-height: 1.9; }
.footer-legal .disclaimer b { color: var(--gold-soft); font-weight: 600; }
.copyright { color: var(--text-3); font-size: 13px; margin-top: 12px; }

/* ============================================================
   滚动出现动画
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s cubic-bezier(.2,.7,.3,1), transform .8s cubic-bezier(.2,.7,.3,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .plan-featured { transform: none; }
  .plan-featured:hover { transform: translateY(-6px); }
  .source-grid { grid-template-columns: repeat(2, 1fr); }
  .reward-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .section { padding: 80px 0; }

  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 106px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 5vw 22px;
    background: rgba(7, 11, 20, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform .35s cubic-bezier(.2,.8,.3,1);
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-link { padding: 14px 16px; font-size: 16px; }
  .nav-actions .btn { display: none; }

  .hero { padding: 146px 0 70px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 40px; }
  .scroll-hint { display: none; }

  .flow { flex-direction: column; gap: 18px; }
  .flow-arrow { transform: rotate(90deg); align-self: center; }
  .flow-arrow svg { width: 30px; height: 30px; }
  .flow-arrow { animation: slideY 2s infinite; }
  @keyframes slideY { 0%,100% { transform: rotate(90deg) translateX(0); } 50% { transform: rotate(90deg) translateX(4px); } }

  .case-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .strategy-note { grid-template-columns: 1fr; }

  .eco-chain { gap: 6px; }
}

@media (max-width: 520px) {
  .plan-grid { grid-template-columns: 1fr; }
  .source-grid { grid-template-columns: 1fr; }
  .reward-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .hero-cta .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 44px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { padding: 16px 10px; }
  .eco-chain { flex-direction: column; }
  .eco-arrow { transform: rotate(90deg); }
  .how-chain { flex-direction: column; }
  .how-chain span:nth-child(even) { transform: rotate(90deg); }
  .ring-node span { width: 120px; font-size: 13px; }
}