/* ============================================================
   ONVIEL 全站常驻导航 + 首屏 CTA + 信息架构组件
   官网修正 P0-1a / P0-2（第一批 · 结构部分）
   调色板沿用站点既有值：bg #12211f / text #FAF7F0 / gold #C9A86A
   ============================================================ */

/* ---- 常驻导航 ---- */
.sv-nav {
  position: sticky; top: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  padding: 0 24px;
  min-height: 52px;
  background: rgba(14, 26, 24, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(250, 247, 240, 0.10);
  font-family: "Noto Sans SC", sans-serif;
}
.sv-brand {
  color: #FAF7F0; text-decoration: none;
  font-size: 14px; letter-spacing: 3px; white-space: nowrap;
  padding: 8px 0;
}
.sv-brand span { color: #9db8b2; font-size: 11px; letter-spacing: 2px; margin-left: 6px; }
.sv-toggle {
  display: none;
  background: none; border: 1px solid rgba(250, 247, 240, 0.25); border-radius: 8px;
  color: #FAF7F0; font-size: 18px; line-height: 1;
  width: 44px; height: 44px; cursor: pointer;
  align-items: center; justify-content: center;
}
.sv-menu {
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
}
.sv-menu a {
  color: #9db8b2; text-decoration: none;
  font-size: 13px; letter-spacing: 1.5px;
  padding: 10px 10px; min-height: 44px;
  display: inline-flex; align-items: center;
  border-bottom: 2px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.sv-menu a:hover { color: #FAF7F0; }
.sv-menu a[aria-current="page"] { color: #FAF7F0; border-bottom-color: #C9A86A; }
.sv-lang { display: inline-flex; align-items: center; gap: 6px; margin-left: 10px; padding-left: 12px; border-left: 1px solid rgba(250,247,240,0.14); font-size: 12px; color: #6a8a86; }
.sv-lang a { font-size: 12px; padding: 10px 6px; min-height: 44px; }
.sv-lang .sv-lang-active { color: #FAF7F0; padding: 10px 6px; }

@media (max-width: 900px) {
  .sv-menu a { padding: 10px 6px; font-size: 12px; letter-spacing: 1px; }
}

@media (max-width: 640px) {
  .sv-nav { flex-wrap: wrap; padding: 0 16px; }
  .sv-toggle { display: inline-flex; }
  .sv-menu {
    display: none; flex-direction: column; align-items: stretch;
    width: 100%; padding: 8px 0 14px; gap: 2px;
  }
  .sv-nav.open .sv-menu { display: flex; }
  .sv-menu a { font-size: 15px; padding: 12px 10px; }
  .sv-lang { border-left: none; margin-left: 0; padding-left: 10px; }
}

/* ---- 首屏双操作（P0-2：主 CTA 直接阅读 / 次级 立即进入花园） ---- */
.sv-cta-row {
  display: flex; gap: 18px; justify-content: center; align-items: center;
  flex-wrap: wrap; margin: 8px 0 72px;
}
.sv-cta-main, .sv-cta-sub {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; min-width: 160px; padding: 12px 28px;
  border-radius: 999px; text-decoration: none;
  font-size: 15px; letter-spacing: 3px;
  font-family: "Noto Sans SC", sans-serif;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.sv-cta-main {
  background: #C9A86A; color: #12211f; font-weight: 500;
  box-shadow: 0 4px 22px rgba(201, 168, 106, 0.28);
}
.sv-cta-main:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(201, 168, 106, 0.4); }
.sv-cta-sub {
  background: transparent; color: #FAF7F0;
  border: 1px solid rgba(250, 247, 240, 0.45);
}
.sv-cta-sub:hover { background: rgba(250, 247, 240, 0.08); transform: translateY(-2px); }

/* ---- 首页信息架构区（P0-1a） ---- */
.sv-ia { position: relative; z-index: 5; max-width: 860px; margin: 0 auto; padding: 24px 24px 220px; width: 100%; box-sizing: border-box; }
.sv-ia-section { padding: 34px 0; border-top: 1px solid rgba(250, 247, 240, 0.10); }
.sv-ia-title { font-size: 17px; letter-spacing: 3px; color: #FAF7F0; margin: 0 0 6px; font-weight: 500; }
.sv-ia-desc { font-size: 13px; color: #9db8b2; letter-spacing: 1px; line-height: 1.9; margin: 0 0 14px; }
.sv-ia-link {
  display: inline-flex; align-items: center; min-height: 44px;
  color: #C9A86A; text-decoration: none; font-size: 13px; letter-spacing: 2px;
  border-bottom: 1px solid rgba(201, 168, 106, 0.4); padding-bottom: 2px;
  font-family: "Noto Sans SC", sans-serif;
}
.sv-ia-link:hover { border-bottom-color: #C9A86A; }
.sv-ia-entries { display: flex; gap: 56px; justify-content: center; flex-wrap: wrap; margin-top: 10px; }

/* ---- 骨架栏目页（第一批 · 路由与结构，内容随第二批填充） ---- */
.sv-doc { position: relative; z-index: 5; max-width: 720px; margin: 0 auto; padding: 56px 24px 110px; width: 100%; box-sizing: border-box; }
.sv-doc h1 { font-size: 24px; letter-spacing: 5px; color: #FAF7F0; font-weight: 500; margin: 0 0 8px; }
.sv-doc .sv-doc-sub { font-size: 12px; letter-spacing: 2px; color: #9db8b2; margin: 0 0 36px; font-family: "Noto Sans SC", sans-serif; }
.sv-doc h2 { font-size: 16px; letter-spacing: 3px; color: #FAF7F0; font-weight: 500; margin: 34px 0 8px; padding-top: 26px; border-top: 1px solid rgba(250,247,240,0.10); }
.sv-doc p, .sv-doc li { font-size: 14px; line-height: 2.1; color: #cfdeda; letter-spacing: 1px; }
.sv-doc a { color: #C9A86A; text-decoration: none; border-bottom: 1px solid rgba(201,168,106,0.4); }
.sv-doc a:hover { border-bottom-color: #C9A86A; }
.sv-doc .sv-note { font-size: 12px; color: #9db8b2; letter-spacing: 1px; font-family: "Noto Sans SC", sans-serif; }
.sv-doc .sv-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 18px; }
.sv-doc .sv-card {
  display: block; border: 1px solid rgba(250, 247, 240, 0.14); border-radius: 14px;
  padding: 22px 20px; text-decoration: none; background: rgba(250, 247, 240, 0.03);
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}
.sv-doc .sv-card:hover { border-color: rgba(201, 168, 106, 0.55); background: rgba(250, 247, 240, 0.06); transform: translateY(-2px); }
.sv-doc .sv-card b { display: block; color: #FAF7F0; font-size: 15px; letter-spacing: 2px; font-weight: 500; margin-bottom: 8px; }
.sv-doc .sv-card span { color: #9db8b2; font-size: 12.5px; letter-spacing: 1px; line-height: 1.9; }
/* 官宣视频占位（v2.4 P0-1a）：素材就绪前隐藏渲染，仅保留位置与样式 */
.sv-video-slot { aspect-ratio: 16 / 9; border: 1px dashed rgba(250, 247, 240, 0.25); border-radius: 14px; display: flex; align-items: center; justify-content: center; margin: 26px 0 6px; background: rgba(250,247,240,0.02); }
.sv-video-slot[hidden] { display: none; }

@media (max-width: 640px) {
  .sv-cta-main, .sv-cta-sub { width: 100%; min-width: 0; font-size: 16px; }
  .sv-ia { padding: 12px 20px 80px; }
  .sv-doc { padding: 40px 20px 90px; }
}