/* ==========================================================================
   CoinPoker — styles/main.css
   Mobile-First · 纯手写 · 无框架
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #0c0d11;
  --bg-panel: #13151a;
  --bg-card: #181b21;
  --accent: #e12231;
  --accent-2: #ff3543;
  --accent-deep: #a80f1d;
  --accent-soft: rgba(225, 34, 49, 0.12);
  --gold: #e8b339;
  --text: #c7ccd2;
  --text-heading: #ffffff;
  --text-dim: #8b929b;
  --line: rgba(255, 255, 255, 0.08);
  --radius-card: 16px;
  --radius-pill: 999px;
  --header-h: 64px;
  --ease: 180ms ease;
  --maxw: 1120px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-heading);
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
}

.narrow {
  max-width: 760px;
}

.text-gold {
  color: var(--gold);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--ease), background var(--ease), border-color var(--ease),
    opacity var(--ease), box-shadow var(--ease);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(180deg, var(--accent-2), var(--accent) 45%, var(--accent-deep));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 10px 30px -10px rgba(225, 34, 49, 0.7);
}

.btn-primary:hover {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 14px 38px -10px rgba(225, 34, 49, 0.85);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(225, 34, 49, 0.5);
  color: var(--accent);
}

.btn-sm {
  min-height: 40px;
  padding-inline: 18px;
  font-size: 14px;
}

.btn-lg {
  min-height: 54px;
  padding-inline: 36px;
  font-size: 17px;
}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(10, 15, 13, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: var(--accent-2);
  background: var(--accent-soft);
  border: 1px solid rgba(225, 34, 49, 0.3);
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.01em;
  line-height: 1.15;
}

.brand-name small {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.12em;
}

/* 桌面导航链接 */
.nav-links {
  display: none;
  position: absolute;
  top: calc(var(--header-h) + 1px);
  left: 0;
  right: 0;
  flex-direction: column;
  gap: 4px;
  padding: 12px 20px 20px;
  background: rgba(12, 18, 15, 0.98);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.nav-links.open {
  display: flex;
}

.nav-links a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 12px;
  border-radius: 10px;
  font-size: 16px;
  color: var(--text);
  transition: background var(--ease), color var(--ease);
}

.nav-links a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-cta {
  margin-top: 6px;
}

.nav-cta a {
  justify-content: center;
}

/* 汉堡按钮 */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin-inline: auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 48px) 0 64px;
  overflow: hidden;
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, var(--bg) 0%, rgba(12, 13, 17, 0.82) 28%, rgba(12, 13, 17, 0.25) 52%, rgba(12, 13, 17, 0) 72%),
    linear-gradient(180deg, rgba(12, 13, 17, 0.55) 0%, rgba(12, 13, 17, 0) 30%, rgba(12, 13, 17, 0) 70%, var(--bg) 100%),
    url("../assets/hero-bg.png");
  background-repeat: no-repeat;
  background-position: right center;
  background-size: cover;
}

/* 底图已含蜂巢与光效，装饰层淡出为轻微压暗 */
.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(12, 13, 17, 0.55) 0%, transparent 45%);
}

.hero-glow::before,
.hero-glow::after {
  content: none;
}

.hero-inner {
  position: relative;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-2);
  background: var(--accent-soft);
  border: 1px solid rgba(225, 34, 49, 0.3);
}

.badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
}

.hero-title {
  margin-top: 0;
  font-size: 32px;
  letter-spacing: -0.015em;
  color: var(--text-heading);
}

.hero-desc {
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 15px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
}

.hero-actions .btn {
  width: 100%;
}

.hero-actions .btn-primary {
  min-height: 52px;
  font-size: 16px;
}

.hero-stats {
  display: flex;
  gap: 12px;
  margin-top: 36px;
}

.hero-stats div {
  flex: 1;
  padding: 14px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.hero-stats dt {
  font-size: 12px;
  color: var(--text-dim);
}

.hero-stats dd {
  margin-top: 2px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: 0.02em;
}

/* Hero 右侧筹码卡（手机端隐藏，桌面显示） */
.hero-card {
  display: none;
}

/* ==========================================================================
   信任条
   ========================================================================== */
.ticker {
  border-block: 1px solid var(--line);
  background: var(--bg-panel);
}

.ticker-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding-top: 14px;
  padding-bottom: 14px;
  font-size: 13px;
  color: var(--text-dim);
}

.ticker-inner i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent);
}

/* ==========================================================================
   通用区块
   ========================================================================== */
.section {
  padding: 56px 0;
}

.section-alt {
  background: var(--bg-panel);
  border-block: 1px solid var(--line);
}

.section-head {
  margin-bottom: 32px;
}

.section-head h2 {
  margin-top: 10px;
  font-size: 24px;
}

.section-head p {
  margin-top: 12px;
  color: var(--text-dim);
  max-width: 620px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

/* 紫红渐变标签（游戏区） */
.eyebrow-grad {
  background: linear-gradient(90deg, #b455ff 0%, #e12231 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.04em;
}

/* 游戏区超大头部 */
.section-head-xl {
  max-width: 100%;
}

.section-head-xl h2 {
  font-size: 28px;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-top: 14px;
}

.section-head-xl p {
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.75;
  max-width: 1000px;
}

/* ==========================================================================
   游戏卡片
   ========================================================================== */
.game-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.game-card {
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  transition: border-color var(--ease), transform var(--ease);
}

.game-card:hover {
  border-color: rgba(225, 34, 49, 0.35);
  transform: translateY(-2px);
}

.game-card h3 {
  text-align: center;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.game-card p {
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.game-card p:first-of-type {
  margin-top: 20px;
}

/* 卡片内产品截图 */
.game-shot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--line);
  margin-bottom: 24px;
}

.game-card:has(.game-shot) h3 {
  margin-top: 0;
}

.game-card:has(.game-shot) p:first-of-type {
  margin-top: 18px;
}

/* ==========================================================================
   平台优势
   ========================================================================== */
.adv-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.adv-card {
  padding: 26px 22px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.adv-tag {
  display: inline-block;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 8px;
  background: var(--accent-soft);
}

.adv-card h3 {
  margin-top: 14px;
  font-size: 18px;
}

.adv-card p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-dim);
}

/* ==========================================================================
   为何首屈一指
   ========================================================================== */
.section-head-why h2 {
  font-size: 26px;
  letter-spacing: -0.015em;
}

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

.why-card {
  display: flex;
  flex-direction: column;
  padding: 24px 22px 28px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.why-shot {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.why-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.why-shot-placeholder {
  display: grid;
  place-items: center;
  background:
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.03) 0 10px, transparent 10px 20px),
    var(--bg-panel);
}

.why-shot-placeholder span {
  font-size: 13px;
  color: var(--text-dim);
  border: 1px dashed var(--line);
  padding: 6px 14px;
  border-radius: 8px;
}

.why-card h3 {
  margin-top: 22px;
  text-align: center;
  font-size: 22px;
}

.why-card p {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ==========================================================================
   科普长文 / 大标题 + 编号步骤
   ========================================================================== */
.big-title {
  font-size: 26px;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.big-title + .long-text {
  margin-top: 22px;
}

.long-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.long-text + .big-title {
  margin-top: 48px;
}

.long-text-note {
  margin-top: 20px;
  font-size: 14px;
}

/* 步骤下方整宽操作界面截图 */
.guide-shot {
  margin-top: 32px;
}

.guide-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.plain-steps {
  margin-top: 22px;
  counter-reset: step;
}

.plain-steps li {
  position: relative;
  padding-left: 38px;
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
  counter-increment: step;
}

.plain-steps li::before {
  content: counter(step) ".";
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  font-weight: 700;
  color: var(--text-heading);
}

.plain-steps strong {
  color: var(--text-heading);
  font-weight: 700;
}

/* ==========================================================================
   步骤（旧圆形序号，已弃用）
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.steps-col h3 {
  font-size: 19px;
  margin-bottom: 18px;
}

.steps li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}

.steps li:last-child {
  border-bottom: none;
}

.steps span {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(225, 34, 49, 0.25);
}

.steps strong {
  font-size: 15px;
}

.steps p {
  font-size: 14px;
  color: var(--text-dim);
}

/* ==========================================================================
   表格
   ========================================================================== */
.table-title {
  margin: 40px 0 16px;
  font-size: 18px;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--bg-card);
}

.table-wrap table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
}

.table-wrap th,
.table-wrap td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.table-wrap thead th {
  background: rgba(225, 34, 49, 0.08);
  color: var(--accent);
  font-weight: 700;
}

.table-wrap tbody tr:last-child td {
  border-bottom: none;
}

.table-wrap tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* 支付方式表：中性深色表头 + 中列居中 */
.pay-table thead th {
  background: #2b2f3a;
  color: var(--text-heading);
}

.pay-table tbody td {
  color: var(--text);
}

.pay-table tbody td:first-child {
  color: var(--text-heading);
  font-weight: 700;
}

.pay-table th:nth-child(2),
.pay-table th:nth-child(3),
.pay-table td:nth-child(2),
.pay-table td:nth-child(3) {
  text-align: center;
}

/* 利弊表 */
.pros-cons-wrap {
  margin-top: 32px;
}

.proscons {
  min-width: 460px;
}

.proscons thead th {
  background: #2b2f3a;
  color: var(--text-heading);
  text-align: left;
}

.proscons th,
.proscons td {
  white-space: normal;
  line-height: 1.6;
  vertical-align: top;
  color: var(--text);
}

.proscons td strong {
  color: var(--text-heading);
}

/* ==========================================================================
   替代币种
   ========================================================================== */
.alt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.alt-card {
  padding: 24px 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.alt-card h3 {
  font-size: 22px;
  color: var(--text-heading);
  text-align: center;
}

.alt-card p {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ==========================================================================
   终章 CTA
   ========================================================================== */
.final-cta {
  position: relative;
  background:
    radial-gradient(ellipse 70% 80% at 50% 0%, rgba(225, 34, 49, 0.16), transparent 60%),
    var(--bg);
}

.final-cta .long-text + .long-text {
  margin-top: 18px;
}

.final-action {
  margin-top: 32px;
  text-align: center;
}

.final-action .btn {
  display: inline-flex;
}

.responsible {
  margin-top: 28px;
  padding: 16px;
  font-size: 13px !important;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-panel);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list {
  margin-top: 32px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-card);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 24px;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  font-size: 26px;
  font-weight: 300;
  line-height: 1;
  color: var(--text-heading);
  transition: transform var(--ease);
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list details p {
  padding: 0 24px 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--line);
  background: #08090c;
  padding-top: 56px;
}

/* ---- 主导航区 ---- */
.footer-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.01em;
}

.footer-brand p {
  max-width: 380px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.footer-main nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-main h4 {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.footer-main nav a {
  font-size: 15px;
  color: var(--text-dim);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  transition: color var(--ease);
}

.footer-main nav a:hover {
  color: var(--text-heading);
}

/* ---- 法律条款区 ---- */
.footer-legal {
  border-top: 1px solid var(--line);
  padding-block: 28px;
}

.footer-legal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 16px;
}

.footer-legal-grid a {
  font-size: 14px;
  color: var(--text-dim);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  transition: color var(--ease);
}

.footer-legal-grid a:hover {
  color: var(--text-heading);
}

/* ---- 运营/牌照区 ---- */
.footer-oper {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding-top: 8px;
  padding-bottom: 48px;
}

.footer-badge {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.footer-badge img {
  width: 96px;
  height: auto;
}

.footer-oper-text p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

.footer-oper-text p + p {
  margin-top: 12px;
}

/* ==========================================================================
   跳转加载遮罩
   ========================================================================== */
.redirect-loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0a0e1a;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease;
}

.redirect-loader.show {
  opacity: 1;
  visibility: visible;
}

.redirect-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.redirect-logo {
  width: 88px;
  height: 88px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  animation: logoBreathe 1.8s ease-in-out infinite;
}

.redirect-logo img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
}

@keyframes logoBreathe {
  0%,
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(225, 34, 49, 0.35);
  }
  50% {
    transform: scale(1.08);
    box-shadow: 0 0 0 14px rgba(225, 34, 49, 0);
  }
}

.redirect-status {
  margin-top: 40px;
  font-size: 14px;
  color: var(--text-heading);
  letter-spacing: 0.02em;
}

.redirect-progress {
  margin-top: 12px;
  width: 180px;
  height: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  overflow: hidden;
}

.redirect-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
}

.redirect-cancel {
  margin-top: 22px;
  min-height: 40px;
  padding: 0 20px;
  font-size: 14px;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease);
}

.redirect-cancel:hover {
  color: var(--text-heading);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   响应式：平板 ≥768px
   ========================================================================== */
@media (min-width: 768px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 72px 0;
  }

  .section-head h2 {
    font-size: 30px;
  }

  .section-head-xl h2 {
    font-size: 42px;
  }

  .section-head-why h2 {
    font-size: 38px;
  }

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

  .big-title {
    font-size: 36px;
  }

  .long-text,
  .plain-steps li {
    font-size: 16px;
  }

  .section-head-xl p {
    font-size: 16px;
  }

  .game-grid,
  .adv-grid,
  .alt-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .hero-title {
    font-size: 38px;
  }

  .hero-actions {
    flex-direction: row;
  }

  .hero-actions .btn {
    width: auto;
  }
}

/* ==========================================================================
   响应式：桌面 ≥1024px
   ========================================================================== */
@media (min-width: 1024px) {
  .section {
    padding: 96px 0;
  }

  .section-head-xl h2 {
    font-size: 58px;
  }

  .section-head-why h2 {
    font-size: 48px;
  }

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

  .big-title {
    font-size: 48px;
  }

  .plain-steps {
    max-width: 900px;
  }

  .section-head-xl p {
    font-size: 17px;
  }

  /* 导航恢复横向，隐藏汉堡 */
  .nav-links {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 6px;
    padding: 0;
    background: transparent;
    border: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .nav-links a {
    min-height: 40px;
    padding-inline: 14px;
    font-size: 15px;
  }

  .nav-cta {
    margin-top: 0;
    margin-left: 8px;
  }

  .nav-toggle {
    display: none;
  }

  /* Hero：底图承载右侧视觉，文案单列居左 */
  .hero-inner {
    display: block;
  }

  .hero-copy {
    max-width: 560px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-card {
    display: none;
  }

  .hero {
    padding: calc(var(--header-h) + 96px) 0 120px;
    background-position: center right;
  }

  .chip-card {
    position: relative;
    padding: 28px;
    border-radius: 20px;
    background: linear-gradient(150deg, #1a1d24, #0f1116);
    border: 1px solid var(--line);
    box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.8);
  }

  .chip-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .chip-logo {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(180deg, var(--accent-2), var(--accent-deep));
  }

  .chip-net {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    padding: 4px 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
  }

  .chip-amount {
    margin-top: 28px;
    font-size: 34px;
    font-weight: 800;
    letter-spacing: 0.02em;
  }

  .chip-amount small {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dim);
  }

  .chip-bars {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 80px;
    margin-top: 24px;
  }

  .chip-bars span {
    flex: 1;
    border-radius: 4px 4px 0 0;
    background: linear-gradient(to top, rgba(225, 34, 49, 0.3), var(--accent-2));
  }

  .chip-foot {
    display: flex;
    justify-content: space-between;
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    font-size: 13px;
    color: var(--text-dim);
  }

  .chip-foot strong {
    color: var(--accent);
  }

  .game-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

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

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

  .footer-main {
    grid-template-columns: 2fr 1fr 1fr 1.2fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-legal-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (min-width: 1200px) {
  .game-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}