/**
 * 星亿生命营销站 — 全局样式
 * 视觉对齐 EverGreen Community 深色极简：深灰底、清晰层级、少装饰。
 * 金色仅用于主按钮与关键标题点缀，保持克制。
 */

:root {
  --bg-main: #0e0f11;
  --bg-elevated: #14161a;
  --bg-card: #1a1d22;
  --border: #262a31;
  --text: #f4f5f7;
  --muted: #9aa0a8;
  --muted-2: #6b717a;
  --gold: #c9a962;
  --gold-soft: rgba(201, 169, 98, 0.14);
  --gold-hover: #d4bc7a;
  --radius: 14px;
  --radius-sm: 10px;
  --max: 1080px;
  --header-h: 64px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04), 0 18px 50px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.xy-site {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-main);
  padding-bottom: 120px; /* 为底部合规条留出空间 */
}

a {
  color: var(--text);
  text-decoration: none;
}
a:hover {
  color: var(--muted);
}

.xy-wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

/* ─── 顶栏 ─── */
.xy-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-main) 88%, transparent);
  backdrop-filter: blur(12px);
}

.xy-header-inner {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  height: 100%;
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.xy-logo {
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.25;
  font-size: clamp(0.75rem, 2.4vw, 0.95rem);
  flex: 1;
  min-width: 0;
}
@media (min-width: 901px) {
  .xy-logo {
    flex: 0 1 auto;
    max-width: 17rem;
    white-space: normal;
    font-size: 0.88rem;
  }
}
.xy-logo span {
  color: var(--gold);
}

.xy-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex: 1;
  justify-content: center;
  min-width: 0;
}
.xy-nav > a {
  font-size: 0.9rem;
  color: var(--muted);
}
.xy-nav > a:hover,
.xy-nav > a.is-active {
  color: var(--text);
}

.xy-header-tools {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.xy-auth {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}
.xy-auth-link {
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0.35rem 0.4rem;
  white-space: nowrap;
}
.xy-auth-link:hover {
  color: var(--text);
}
.xy-btn-reg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.38rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--gold);
  color: var(--gold);
  background: var(--gold-soft);
  white-space: nowrap;
}
.xy-btn-reg:hover {
  color: var(--gold-hover);
  border-color: var(--gold-hover);
}

.xy-nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  flex-shrink: 0;
}

.xy-lang {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  margin-left: 0.5rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--border);
}
.xy-lang button {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
}
.xy-lang button.is-on {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-soft);
}

/* ─── Hero / 区块 ─── */
.xy-hero {
  padding: clamp(3rem, 10vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
}
.xy-hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.xy-hero .xy-tagline {
  color: var(--gold);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.xy-hero p.lead {
  margin: 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
}

/* 首页：居中、醒目主视觉 */
.xy-hero-home {
  text-align: center;
  max-width: 44rem;
  margin-inline: auto;
}
.xy-hero-home .xy-tagline {
  letter-spacing: 0.18em;
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  margin-bottom: 1rem;
}
.xy-hero-home h1 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.65rem, 5vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
}
.xy-hero-subtitle {
  margin: 0 auto 2.25rem;
  max-width: 22rem;
  font-size: clamp(1.05rem, 2.8vw, 1.35rem);
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.06em;
}
.xy-hero-home .xy-hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 2rem;
}
.xy-hero-block-title {
  margin: 0 0 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.xy-hero-home .xy-hero-block {
  margin-top: 2.25rem;
}
.xy-hero-home .xy-grid {
  text-align: left;
  max-width: 40rem;
  margin-inline: auto;
}
.xy-hero-join-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  max-width: 36rem;
  margin-inline: auto;
}
.xy-hero-join-links a {
  font-size: 0.88rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  background: var(--bg-elevated);
}
.xy-hero-join-links a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.xy-section {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  border-top: 1px solid var(--border);
}
.xy-section h2 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
}
.xy-section .xy-kicker {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.xy-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 720px) {
  .xy-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
  .xy-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.xy-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.xy-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}
.xy-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.xy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.xy-btn-primary {
  background: linear-gradient(180deg, #d4bc7a 0%, var(--gold) 100%);
  color: #1a140a;
  border-color: color-mix(in srgb, var(--gold) 60%, #000);
}
.xy-btn-primary:hover {
  filter: brightness(1.06);
  color: #1a140a;
}
.xy-btn-ghost {
  border-color: var(--border);
  background: transparent;
  color: var(--text);
}
.xy-btn-ghost:hover {
  border-color: var(--muted-2);
  background: var(--bg-elevated);
  color: var(--text);
}

.xy-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.xy-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.xy-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}
.xy-list li + li {
  margin-top: 0.35rem;
}
ol.xy-list {
  list-style: decimal;
}

/* ─── 表单 ─── */
.xy-form label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.xy-form .field {
  margin-bottom: 1rem;
}
.xy-form input,
.xy-form select,
.xy-form textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
}
.xy-form input:focus,
.xy-form textarea:focus,
.xy-form select:focus {
  outline: 1px solid var(--gold);
  border-color: var(--gold);
}
.xy-form textarea {
  min-height: 120px;
  resize: vertical;
}

/* ─── 下载列表 ─── */
.xy-dl-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.xy-dl-row:last-child {
  border-bottom: 0;
}
.xy-dl-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ─── 页脚 ─── */
.xy-footer {
  margin-top: 3rem;
  padding: 2rem 0 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}
.xy-footer-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .xy-footer-grid {
    grid-template-columns: 2fr 1fr;
  }
}

/* 底部固定合规声明条 */
.xy-legal-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  padding: 0.65rem 1rem;
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--muted);
  background: color-mix(in srgb, var(--bg-main) 94%, #000);
  border-top: 1px solid var(--border);
  text-align: center;
}

/* ─── 响应式导航 ─── */
@media (max-width: 900px) {
  .xy-nav-toggle {
    display: inline-flex;
  }
  .xy-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    flex: none;
    padding: 1rem 1.25rem 1.25rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    gap: 0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .xy-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .xy-nav > a {
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
  }
  .xy-nav > a:last-of-type {
    border-bottom: 0;
  }
  .xy-lang {
    margin-left: 0;
    padding-left: 0;
    border-left: 0;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
  }
}

.xy-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.xy-qr {
  max-width: 160px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  padding: 0.35rem;
}
.xy-qr-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

.xy-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  word-break: break-all;
}