/* ============================================================
   KMPlayer 官方网站 — 全局样式
   设计基调：深色克制 / 低饱和 / 专业排版
   ============================================================ */

:root {
  --bg: #0c0f14;
  --bg-soft: #10141b;
  --bg-card: #151a22;
  --bg-card-hover: #1a202a;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.12);
  --text: #d8dee7;
  --text-strong: #f2f5f9;
  --muted: #8a93a2;
  --muted-2: #5f6875;
  --accent: #4f9cf7;
  --accent-soft: rgba(79, 156, 247, 0.14);
  --gold: #c8a15e;
  --danger: #e57a77;
  --ok: #63c98b;
  --radius: 10px;
  --radius-sm: 6px;
  --nav-h: 68px;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-en: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Songti SC", serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 背景质感：细腻的径向渐变 + 噪点 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1100px 480px at 18% -8%, rgba(79, 156, 247, 0.07), transparent 60%),
    radial-gradient(900px 420px at 88% 4%, rgba(200, 161, 94, 0.05), transparent 55%),
    radial-gradient(800px 600px at 50% 110%, rgba(99, 201, 139, 0.03), transparent 60%);
  pointer-events: none;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #7db4fb; }

img { max-width: 100%; display: block; }

::selection { background: rgba(79, 156, 247, 0.25); color: #fff; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 28px; }

/* ================= 导航 ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(12, 15, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 30px; height: 30px; border-radius: 6px; }
.brand-name { font-size: 17px; font-weight: 600; color: var(--text-strong); letter-spacing: 0.2px; }
.brand-name small { display: block; font-size: 10px; font-weight: 400; color: var(--muted-2); letter-spacing: 2.4px; text-transform: uppercase; margin-top: -3px; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  color: var(--muted);
  font-size: 14px;
  padding: 8px 13px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.main-nav a:hover { color: var(--text-strong); background: rgba(255,255,255,0.04); }
.main-nav a.active { color: var(--text-strong); background: rgba(255,255,255,0.06); }

.nav-dl {
  margin-left: 14px;
  background: linear-gradient(135deg, rgba(79,156,247,0.16), rgba(79,156,247,0.06));
  border: 1px solid rgba(79,156,247,0.32);
  color: #9fc4f8 !important;
}
.nav-dl:hover { background: rgba(79,156,247,0.22); }

.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 22px; cursor: pointer; padding: 6px 10px; }

/* ================= Hero ================= */
.hero {
  position: relative;
  padding: 92px 0 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -140px;
  width: 640px;
  height: 280px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(79,156,247,0.10), transparent);
  filter: blur(8px);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 56px; align-items: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 2.6px;
  text-transform: uppercase;
  color: var(--gold);
  font-family: var(--font-en);
  margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold); opacity: 0.7; }

.hero h1 {
  font-size: 42px;
  line-height: 1.22;
  font-weight: 600;
  color: var(--text-strong);
  letter-spacing: 0.2px;
  margin-bottom: 18px;
}
.hero h1 em { font-style: normal; color: var(--accent); }

.hero-sub {
  font-size: 15.5px;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 30px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 26px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.22s ease;
  font-family: var(--font-cn);
}
.btn-primary {
  background: linear-gradient(135deg, #4f9cf7, #2f7fe0);
  color: #fff;
  box-shadow: 0 4px 18px rgba(79,156,247,0.22);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(79,156,247,0.32); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.28); background: rgba(255,255,255,0.04); color: var(--text-strong); }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }

.hero-meta {
  margin-top: 22px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--muted-2);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta i { width: 5px; height: 5px; border-radius: 50%; background: var(--ok); display: inline-block; }

/* hero 右侧视觉 */
.hero-visual { position: relative; }
.hero-visual .screen-stack { position: relative; }
.hero-visual .screen {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.42);
}
.hero-visual .screen img { width: 100%; height: auto; }
.hero-visual .screen-1 { transform: rotate(-1.6deg) translateY(6px); }
.hero-visual .screen-2 {
  position: absolute;
  right: -18px;
  bottom: -26px;
  width: 58%;
  transform: rotate(2.4deg);
  border-color: rgba(255,255,255,0.16);
}

.badge-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--muted);
}
.badge-chip b { color: var(--text-strong); font-weight: 500; }

/* ================= 通用章节 ================= */
.section { padding: 78px 0; border-bottom: 1px solid var(--line); }
.section-head { max-width: 640px; margin-bottom: 46px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-index {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  color: var(--muted-2);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 10px;
}
.section-title { font-size: 29px; font-weight: 600; color: var(--text-strong); letter-spacing: 0.2px; line-height: 1.35; }
.section-desc { margin-top: 14px; color: var(--muted); font-size: 14.5px; }

/* ================= 介绍 ================= */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.intro-text p { color: var(--muted); margin-bottom: 16px; }
.intro-text strong { color: var(--text); font-weight: 500; }
.intro-points { list-style: none; margin-top: 8px; }
.intro-points li { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; color: var(--text); }
.intro-points li::before { content: "◆"; color: var(--accent); font-size: 9px; align-self: center; opacity: 0.85; }
.intro-figure { position: relative; }
.intro-figure img { border-radius: var(--radius); border: 1px solid var(--line-strong); box-shadow: 0 18px 44px rgba(0,0,0,0.36); }
.intro-figure figcaption { margin-top: 14px; font-size: 12.5px; color: var(--muted-2); display: flex; align-items: center; gap: 8px; }
.intro-figure figcaption::before { content: ""; width: 18px; height: 1px; background: var(--muted-2); }

/* ================= 功能卡片 ================= */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}
.feature-card:hover { border-color: rgba(79,156,247,0.35); background: var(--bg-card-hover); transform: translateY(-3px); }
.feature-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 16.5px; font-weight: 600; color: var(--text-strong); margin-bottom: 9px; }
.feature-card p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }

/* ================= 截图 ================= */
.shot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.shot {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}
.shot:hover { border-color: rgba(255,255,255,0.18); transform: translateY(-3px); }
.shot img { width: 100%; height: 218px; object-fit: cover; object-position: top; background: #0a0d12; }
.shot figcaption { padding: 13px 16px 15px; font-size: 13px; color: var(--muted); }
.shot figcaption b { display: block; color: var(--text); font-weight: 500; font-size: 14px; margin-bottom: 3px; }

/* ================= 版本信息 ================= */
.ver-table { width: 100%; border-collapse: collapse; background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.ver-table th, .ver-table td { padding: 14px 18px; text-align: left; font-size: 13.5px; }
.ver-table thead th { background: rgba(255,255,255,0.03); color: var(--muted); font-weight: 500; border-bottom: 1px solid var(--line); }
.ver-table tbody tr { border-bottom: 1px solid var(--line); }
.ver-table tbody tr:last-child { border-bottom: 0; }
.ver-table td { color: var(--text); }
.ver-table td .muted { color: var(--muted); font-size: 12.5px; }
.tag { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; background: var(--accent-soft); color: var(--accent); }
.tag.gold { background: rgba(200,161,94,0.12); color: var(--gold); }
.tag.ok { background: rgba(99,201,139,0.12); color: var(--ok); }

/* ================= 下载引导 ================= */
.dl-section {
  background: linear-gradient(180deg, rgba(79,156,247,0.05), transparent 55%);
}
.dl-panels { display: grid; grid-template-columns: minmax(320px, 520px); justify-content: center; gap: 22px; }
.dl-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 30px;
  position: relative;
  transition: border-color 0.25s, transform 0.25s;
}
.dl-panel:hover { border-color: rgba(255,255,255,0.18); transform: translateY(-2px); }
.dl-panel .dl-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.dl-panel .dl-brand .logo-mini { width: 42px; height: 42px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 19px; font-weight: 600; color: #fff; }

.dl-baidu .logo-mini { background: linear-gradient(135deg, #2f6be8, #4a9bf5); }
.dl-panel h3 { font-size: 19px; font-weight: 600; color: var(--text-strong); }
.dl-panel .dl-sub { font-size: 13px; color: var(--muted-2); }
.dl-panel .dl-points { list-style: none; margin: 14px 0 22px; }
.dl-panel .dl-points li { font-size: 13.5px; color: var(--muted); padding: 5px 0; display: flex; gap: 8px; align-items: baseline; }
.dl-panel .dl-points li::before { content: "✓"; color: var(--ok); font-size: 12px; }
.dl-btn {
  display: block;
  width: 100%;
  padding: 13px 0;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  color: var(--text-strong);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.22s ease;
  font-family: var(--font-cn);
}
.dl-btn:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.24); }
.dl-btn .arrow { display: inline-block; margin-left: 6px; transition: transform 0.2s; }
.dl-btn:hover .arrow { transform: translateX(4px); }
.dl-notice { margin-top: 26px; text-align: center; font-size: 12.5px; color: var(--muted-2); }
.dl-notice b { color: var(--gold); font-weight: 500; }

/* ================= FAQ ================= */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-q { padding: 20px 4px; font-size: 15px; font-weight: 500; color: var(--text); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q .plus { color: var(--muted-2); font-size: 19px; font-family: var(--font-en); transition: transform 0.25s; }
.faq-item.open .plus { transform: rotate(45deg); color: var(--accent); }
.faq-a { display: none; padding: 0 4px 20px; font-size: 14px; color: var(--muted); line-height: 1.85; }
.faq-item.open .faq-a { display: block; }
.faq-a a { color: var(--accent); }

/* ================= 新闻/更新 ================= */
.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.news-card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 20px; transition: border-color 0.25s; }
.news-card:hover { border-color: rgba(255,255,255,0.18); }
.news-date { font-size: 12px; color: var(--muted-2); font-family: var(--font-en); letter-spacing: 0.6px; }
.news-card h3 { font-size: 15.5px; font-weight: 600; color: var(--text-strong); margin: 8px 0 7px; line-height: 1.5; }
.news-card p { font-size: 13px; color: var(--muted); }

/* ================= 关于/页脚 ================= */
.page-hero { padding: 64px 0 44px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: 34px; font-weight: 600; color: var(--text-strong); letter-spacing: 0.3px; }
.page-hero .crumb { font-size: 13px; color: var(--muted-2); margin-bottom: 14px; font-family: var(--font-en); letter-spacing: 0.4px; }
.page-hero .crumb a { color: var(--muted); }
.page-hero .crumb a:hover { color: var(--text-strong); }
.page-hero p.lead { margin-top: 14px; color: var(--muted); max-width: 720px; font-size: 15px; }

.site-footer {
  background: #090c10;
  border-top: 1px solid var(--line);
  padding: 54px 0 40px;
  font-size: 13px;
  color: var(--muted-2);
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; margin-bottom: 38px; }
.footer-grid h4 { font-size: 13.5px; color: var(--text); font-weight: 600; margin-bottom: 14px; letter-spacing: 0.4px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: var(--muted-2); font-size: 13px; }
.footer-grid a:hover { color: var(--text-strong); }
.footer-brand p { margin-top: 12px; color: var(--muted-2); font-size: 12.5px; line-height: 1.8; max-width: 320px; }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12px; }

/* ================= 下载弹窗 ================= */
.modal-mask {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(5, 7, 10, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-mask.show { display: flex; animation: fadeIn 0.22s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  width: 100%;
  max-width: 430px;
  background: #141a23;
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: 14px;
  padding: 34px 32px 30px;
  position: relative;
  box-shadow: 0 30px 90px rgba(0,0,0,0.6);
  animation: modalIn 0.28s cubic-bezier(0.2, 0.8, 0.3, 1);
}
@keyframes modalIn { from { opacity: 0; transform: translateY(14px) scale(0.98); } to { opacity: 1; transform: none; } }

.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 32px; height: 32px;
  border-radius: 8px;
  border: 0;
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  font-size: 17px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.modal-close:hover { background: rgba(255,255,255,0.12); color: var(--text-strong); }

.modal-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 6px; }
.modal-brand .logo-mini { width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 600; color: #fff; }
.modal h3 { font-size: 19px; font-weight: 600; color: var(--text-strong); }
.modal .modal-sub { font-size: 12.5px; color: var(--muted-2); margin-bottom: 20px; }

.modal-qr-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 6px;
}
/* 二维码呼吸边框：大小轻微变化 + 柔和光晕，克制不刺眼 */
.modal-qr {
  width: 208px;
  height: 208px;
  padding: 10px;
  background: #fff;
  border-radius: 12px;
  animation: qrBreathe 3.4s ease-in-out infinite;
}
.modal-qr img { width: 100%; height: 100%; border-radius: 4px; }

@keyframes qrBreathe {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 1px rgba(79, 156, 247, 0.18), 0 0 14px rgba(79, 156, 247, 0.10);
  }
  50% {
    transform: scale(1.028);
    box-shadow: 0 0 0 2px rgba(79, 156, 247, 0.36), 0 0 26px rgba(79, 156, 247, 0.16);
  }
}

.modal-tip {
  text-align: center;
  font-size: 14px;
  color: var(--text-strong);
  margin: 16px 0 4px;
}
.modal-tip .hl { color: var(--gold); }
.modal-safe {
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.modal-safe i { width: 5px; height: 5px; border-radius: 50%; background: var(--ok); display: inline-block; }

.modal-points {
  list-style: none;
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 12px 16px;
  margin: 14px 0 18px;
}
.modal-points li { font-size: 12.8px; color: var(--muted); padding: 3.5px 0; display: flex; gap: 8px; align-items: baseline; }
.modal-points li::before { content: "✓"; color: var(--ok); font-size: 11.5px; }

.modal-btn {
  display: block;
  width: 100%;
  padding: 13px 0;
  border-radius: 9px;
  border: 0;
  background: linear-gradient(135deg, #4f9cf7, #2f7fe0);
  color: #fff;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-cn);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(79,156,247,0.25);
}
.modal-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(79,156,247,0.36); }

.modal-expire {
  margin-top: 14px;
  text-align: center;
  font-size: 12px;
  color: var(--muted-2);
}
.modal-expire b { color: var(--gold); font-weight: 500; }

/* ================= 其他页面通用组件 ================= */
.content-block { padding: 64px 0; border-bottom: 1px solid var(--line); }
.content-block:last-child { border-bottom: 0; }
.prose { max-width: 860px; }
.prose h2 { font-size: 23px; font-weight: 600; color: var(--text-strong); margin: 34px 0 14px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 17px; font-weight: 600; color: var(--text-strong); margin: 26px 0 10px; }
.prose p { color: var(--muted); margin-bottom: 14px; }
.prose ul { margin: 10px 0 18px 4px; list-style: none; }
.prose ul li { padding: 6px 0 6px 22px; position: relative; color: var(--muted); }
.prose ul li::before { content: "—"; position: absolute; left: 0; color: var(--accent); opacity: 0.7; }
.prose strong { color: var(--text); font-weight: 500; }

.ver-list { display: grid; gap: 16px; max-width: 900px; }
.ver-item { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.ver-item .ver-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.ver-item .ver-no { font-size: 17px; font-weight: 600; color: var(--text-strong); font-family: var(--font-en); }
.ver-item .ver-date { font-size: 12.5px; color: var(--muted-2); font-family: var(--font-en); }
.ver-item ul { list-style: none; }
.ver-item li { font-size: 13.5px; color: var(--muted); padding: 3.5px 0 3.5px 18px; position: relative; }
.ver-item li::before { content: "·"; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.about-panel { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.about-panel h3 { font-size: 17px; color: var(--text-strong); margin-bottom: 14px; }
.about-panel p, .about-panel li { font-size: 13.5px; color: var(--muted); }
.about-panel ul { list-style: none; }
.about-panel li { padding: 5px 0; display: flex; gap: 8px; align-items: baseline; }
.about-panel li::before { content: "◆"; color: var(--accent); font-size: 8px; opacity: 0.8; }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 20px; text-align: center; }
.stat-card .num { font-size: 30px; font-weight: 600; color: var(--text-strong); font-family: var(--font-en); }
.stat-card .label { font-size: 12.5px; color: var(--muted-2); margin-top: 4px; }

.note-box {
  background: rgba(200,161,94,0.07);
  border: 1px solid rgba(200,161,94,0.22);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 13.5px;
  color: var(--muted);
  margin: 20px 0;
}
.note-box b { color: var(--gold); font-weight: 500; }

/* ================= 响应式 ================= */
@media (max-width: 1024px) {
  .feature-grid, .shot-grid, .news-list { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 520px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 14px; }
  .hero { padding: 56px 0 48px; }
  .hero h1 { font-size: 29px; }
  .main-nav {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(12,15,20,0.97);
    border-bottom: 1px solid var(--line);
    padding: 14px 20px 20px;
    gap: 2px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 11px 12px; font-size: 15px; }
  .nav-dl { margin-left: 0; margin-top: 8px; text-align: center; }
  .nav-toggle { display: block; }
  .feature-grid, .shot-grid, .news-list, .dl-panels, .intro-grid, .about-grid, .stat-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .section { padding: 52px 0; }
  .section-title { font-size: 23px; }
  .modal { padding: 26px 20px 22px; }
  .ver-table { display: block; overflow-x: auto; }
}