/* ==========================================================================
   黑料正能量 · 共享设计系统 style.css
   视觉概念「暖光资讯」：奶油底 + 珊瑚红琥珀渐变 + 莓紫阳光黄点缀
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 主色 */
  --c-coral: #FF5A5F;
  --c-coral-d: #E63B40;
  --c-amber: #FF8C42;
  --c-amber-l: #FFB347;
  --c-berry: #6C5CE7;
  --c-berry-l: #A29BFE;
  --c-sun: #FFD93D;
  --c-mint: #00CEC9;
  --c-pink: #FF7AA2;

  /* 中性 */
  --c-cream: #FFF8F3;
  --c-cream-2: #FFEDE3;
  --c-ink: #2D3436;
  --c-ink-2: #57606F;
  --c-ink-3: #9AA0A6;
  --c-line: #F0E6DC;
  --c-white: #FFFFFF;

  /* 渐变 */
  --grad-hero: linear-gradient(135deg, #FF5A5F 0%, #FF8C42 50%, #FFB347 100%);
  --grad-berry: linear-gradient(135deg, #6C5CE7 0%, #A29BFE 100%);
  --grad-sun: linear-gradient(135deg, #FFD93D 0%, #FFB347 100%);
  --grad-mint: linear-gradient(135deg, #00CEC9 0%, #6C5CE7 100%);
  --grad-pink: linear-gradient(135deg, #FF7AA2 0%, #FF5A5F 100%);
  --grad-text: linear-gradient(135deg, #FF5A5F 0%, #FF8C42 50%, #6C5CE7 100%);
  --grad-soft: linear-gradient(135deg, #FFF8F3 0%, #FFEDE3 100%);

  /* 圆角 */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-sm: 0 2px 8px rgba(45, 52, 54, 0.06);
  --sh-md: 0 8px 24px rgba(255, 90, 95, 0.10), 0 2px 6px rgba(45, 52, 54, 0.05);
  --sh-lg: 0 18px 48px rgba(255, 90, 95, 0.16), 0 6px 14px rgba(45, 52, 54, 0.06);
  --sh-glow: 0 12px 40px rgba(255, 90, 95, 0.28);
  --sh-berry: 0 12px 40px rgba(108, 92, 231, 0.25);

  /* 间距 */
  --sp: 8px;

  /* 过渡 */
  --tr: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --tr-back: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* 字体 */
  --ff: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --ff-display: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff);
  color: var(--c-ink);
  background: var(--c-cream);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

/* ---------- 背景装饰光斑 ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.bg-decor span {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.32;
  animation: floatBlob 18s ease-in-out infinite;
}
.bg-decor span:nth-child(1) { width: 480px; height: 480px; background: var(--c-coral); top: -120px; left: -80px; }
.bg-decor span:nth-child(2) { width: 420px; height: 420px; background: var(--c-berry); bottom: -140px; right: -60px; animation-delay: -6s; }
.bg-decor span:nth-child(3) { width: 320px; height: 320px; background: var(--c-sun); top: 40%; right: 18%; animation-delay: -12s; }
.bg-decor span:nth-child(4) { width: 260px; height: 260px; background: var(--c-mint); top: 60%; left: 28%; animation-delay: -9s; }
@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.1); }
  66% { transform: translate(-25px, 25px) scale(0.95); }
}

/* ---------- 布局容器 ---------- */
.wrap { width: min(1200px, 92%); margin-inline: auto; }
.wrap-narrow { width: min(820px, 92%); margin-inline: auto; }
section { position: relative; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  transition: var(--tr);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.nav.scrolled {
  background: rgba(255, 248, 243, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--sh-sm);
  padding: 10px 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.28rem;
  color: var(--c-ink);
  white-space: nowrap;
}
.logo-mark {
  width: 40px; height: 40px;
  border-radius: 13px;
  background: var(--grad-hero);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: var(--sh-glow);
  transform: rotate(-4deg);
  transition: var(--tr);
}
.logo:hover .logo-mark { transform: rotate(4deg) scale(1.08); }
.logo-text b {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 16px;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--c-ink-2);
  transition: var(--tr);
  position: relative;
}
.nav-links a:hover { color: var(--c-coral); background: var(--c-cream-2); }
.nav-links a.active { color: var(--c-coral); background: var(--c-cream-2); }
.nav-cta {
  background: var(--grad-hero);
  color: #fff;
  padding: 10px 22px !important;
  border-radius: var(--r-pill);
  box-shadow: var(--sh-glow);
  font-weight: 700;
}
.nav-cta:hover { transform: translateY(-2px); color: #fff !important; box-shadow: var(--sh-lg); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--c-white);
  box-shadow: var(--sh-sm);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  width: 20px; height: 2.5px;
  background: var(--c-ink);
  border-radius: 2px;
  transition: var(--tr);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--r-pill);
  font-weight: 700;
  font-size: 1rem;
  transition: var(--tr);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-hero);
  color: #fff;
  box-shadow: var(--sh-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--sh-lg); }
.btn-berry { background: var(--grad-berry); color: #fff; box-shadow: var(--sh-berry); }
.btn-berry:hover { transform: translateY(-3px); box-shadow: var(--sh-lg); }
.btn-ghost {
  background: var(--c-white);
  color: var(--c-ink);
  box-shadow: var(--sh-sm);
  border: 2px solid var(--c-line);
}
.btn-ghost:hover { border-color: var(--c-coral); color: var(--c-coral); transform: translateY(-3px); }
.btn-lg { padding: 18px 38px; font-size: 1.1rem; }
.btn-block { display: flex; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 150px 0 80px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 50px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: rgba(255, 90, 95, 0.1);
  color: var(--c-coral-d);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 22px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-coral);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 90, 95, 0.5); }
  50% { box-shadow: 0 0 0 8px rgba(255, 90, 95, 0); }
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.hero h1 .grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: 1.12rem;
  color: var(--c-ink-2);
  margin-bottom: 30px;
  max-width: 540px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.hero-stats { display: flex; gap: 30px; flex-wrap: wrap; }
.hero-stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-stat .label { font-size: 0.85rem; color: var(--c-ink-3); }

/* Hero 视觉卡片堆叠 */
.hero-visual { position: relative; height: 460px; }
.h-card {
  position: absolute;
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  overflow: hidden;
}
.h-card-main {
  inset: 30px 0 30px 30px;
  background: var(--grad-hero);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #fff;
}
.h-card-main::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cpath d='M30 0v60M0 30h60' stroke='rgba(255,255,255,0.08)' stroke-width='1'/%3E%3C/svg%3E");
}
.h-card-main > * { position: relative; }
.h-card-tag {
  background: rgba(255, 255, 255, 0.25);
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: 0.8rem;
  font-weight: 700;
  align-self: flex-start;
  backdrop-filter: blur(8px);
}
.h-card-title { font-size: 1.5rem; font-weight: 800; line-height: 1.3; }
.h-card-foot { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; }
.h-card-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  display: grid;
  place-items: center;
  font-weight: 800;
}
.h-card-sub {
  width: 180px; height: 230px;
  background: var(--c-white);
  bottom: -10px; right: 0;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: floatCard 5s ease-in-out infinite;
}
.h-card-sub .play {
  width: 46px; height: 46px;
  border-radius: 14px;
  background: var(--grad-berry);
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: var(--sh-berry);
}
.h-card-sub .mini-title { font-weight: 800; font-size: 0.95rem; }
.h-card-sub .mini-meta { font-size: 0.75rem; color: var(--c-ink-3); }
.h-card-float {
  width: 130px; height: 130px;
  background: var(--c-white);
  top: -10px; right: 40px;
  border-radius: var(--r-lg);
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  animation: floatCard 5s ease-in-out infinite 1.5s;
}
.h-card-float .ring {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: var(--grad-sun);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
}
.h-card-float .t { font-size: 0.7rem; font-weight: 800; }
@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- 通用区块标题 ---------- */
.sec { padding: 80px 0; }
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.sec-head .eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--r-pill);
  background: var(--c-cream-2);
  color: var(--c-coral-d);
  font-weight: 700;
  font-size: 0.82rem;
  margin-bottom: 16px;
}
.sec-head h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.sec-head h2 .grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sec-head p { color: var(--c-ink-2); font-size: 1.05rem; }

/* ---------- 分类标签（筛选 Chips） ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}
.chip {
  padding: 10px 20px;
  border-radius: var(--r-pill);
  background: var(--c-white);
  box-shadow: var(--sh-sm);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--c-ink-2);
  border: 2px solid transparent;
  transition: var(--tr);
}
.chip:hover { color: var(--c-coral); border-color: var(--c-coral); }
.chip.active {
  background: var(--grad-hero);
  color: #fff;
  box-shadow: var(--sh-glow);
}

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 话题/文章卡片 */
.card {
  background: var(--c-white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-md);
  transition: var(--tr);
  border: 1px solid var(--c-line);
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.card-media {
  position: relative;
  height: 170px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 3rem;
  overflow: hidden;
}
.card-media .cat-tag {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--c-ink);
  padding: 5px 12px;
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  font-weight: 700;
}
.card-media .duration {
  position: absolute;
  bottom: 14px; right: 14px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  padding: 3px 10px;
  border-radius: var(--r-sm);
  font-size: 0.72rem;
  font-weight: 700;
}
.card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.card-title {
  font-size: 1.08rem;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.4;
}
.card-desc { font-size: 0.9rem; color: var(--c-ink-2); margin-bottom: 14px; flex: 1; }
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
}
.card-meta { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--c-ink-3); }
.card-meta .av {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.7rem;
  font-weight: 800;
  color: #fff;
}
.card-stats { display: flex; gap: 12px; font-size: 0.78rem; color: var(--c-ink-3); }
.card-stats span { display: inline-flex; align-items: center; gap: 4px; }

/* 媒体色块 */
.media-1 { background: linear-gradient(135deg, #FF5A5F, #FF8C42); }
.media-2 { background: linear-gradient(135deg, #6C5CE7, #A29BFE); }
.media-3 { background: linear-gradient(135deg, #00CEC9, #6C5CE7); }
.media-4 { background: linear-gradient(135deg, #FFD93D, #FF8C42); }
.media-5 { background: linear-gradient(135deg, #FF7AA2, #FF5A5F); }
.media-6 { background: linear-gradient(135deg, #A29BFE, #FF7AA2); }

/* ---------- 服务特色卡片 ---------- */
.feature {
  background: var(--c-white);
  border-radius: var(--r-lg);
  padding: 32px 26px;
  box-shadow: var(--sh-md);
  border: 1px solid var(--c-line);
  transition: var(--tr);
  position: relative;
  overflow: hidden;
}
.feature::after {
  content: "";
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: var(--grad-hero);
  opacity: 0.06;
  transition: var(--tr);
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.feature:hover::after { transform: scale(1.4); }
.feature .ico {
  width: 58px; height: 58px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 1.7rem;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: var(--sh-sm);
}
.feature h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 10px; }
.feature p { color: var(--c-ink-2); font-size: 0.94rem; }
.ico-1 { background: var(--grad-hero); }
.ico-2 { background: var(--grad-berry); }
.ico-3 { background: var(--grad-mint); }
.ico-4 { background: var(--grad-sun); }
.ico-5 { background: var(--grad-pink); }
.ico-6 { background: linear-gradient(135deg, #00CEC9, #6C5CE7); }

/* ---------- 视频网格卡（在线观看） ---------- */
.vcard {
  background: var(--c-white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-md);
  border: 1px solid var(--c-line);
  transition: var(--tr);
  cursor: pointer;
}
.vcard:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
.vcard-media {
  position: relative;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  color: #fff;
  overflow: hidden;
}
.vcard-media .play-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  border: 2px solid rgba(255, 255, 255, 0.6);
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  transition: var(--tr);
}
.vcard:hover .play-btn { background: #fff; color: var(--c-coral); transform: scale(1.1); }
.vcard-media .badge-live {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--c-coral);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font-size: 0.72rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.vcard-media .badge-live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #fff;
  animation: pulse 1.6s infinite;
}
.vcard-media .views {
  position: absolute;
  bottom: 12px; right: 12px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  padding: 3px 10px;
  border-radius: var(--r-sm);
  font-size: 0.75rem;
  font-weight: 700;
}
.vcard-body { padding: 16px 18px; }
.vcard-title { font-weight: 700; font-size: 0.98rem; margin-bottom: 6px; line-height: 1.4; }
.vcard-meta { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: var(--c-ink-3); }

/* ---------- 下载区块 ---------- */
.download-hero {
  background: var(--grad-hero);
  border-radius: var(--r-xl);
  padding: 60px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.download-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='50' height='50'%3E%3Ccircle cx='25' cy='25' r='2' fill='rgba(255,255,255,0.1)'/%3E%3C/svg%3E");
}
.download-hero > * { position: relative; }
.download-hero h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; margin-bottom: 14px; }
.download-hero p { font-size: 1.1rem; opacity: 0.95; margin-bottom: 28px; max-width: 520px; }
.dl-buttons { display: flex; flex-wrap: wrap; gap: 14px; }
.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  color: var(--c-ink);
  padding: 14px 26px;
  border-radius: var(--r-lg);
  font-weight: 700;
  transition: var(--tr);
  box-shadow: var(--sh-md);
}
.dl-btn:hover { transform: translateY(-3px); box-shadow: var(--sh-lg); }
.dl-btn .store-ico { font-size: 1.6rem; }
.dl-btn .store-text { display: flex; flex-direction: column; line-height: 1.2; }
.dl-btn .store-text small { font-size: 0.7rem; font-weight: 500; color: var(--c-ink-3); }
.dl-btn.dark { background: rgba(0, 0, 0, 0.35); color: #fff; backdrop-filter: blur(8px); }
.dl-btn.dark .store-text small { color: rgba(255, 255, 255, 0.8); }

.qr-box {
  background: #fff;
  border-radius: var(--r-lg);
  padding: 20px;
  text-align: center;
  box-shadow: var(--sh-lg);
}
.qr-box .qr-img {
  width: 160px; height: 160px;
  margin: 0 auto 12px;
  border-radius: var(--r-md);
  background:
    linear-gradient(45deg, #000 25%, transparent 25%) 0 0/16px 16px,
    linear-gradient(-45deg, #000 25%, transparent 25%) 0 0/16px 16px,
    linear-gradient(45deg, transparent 75%, #000 75%) 8px 8px/16px 16px,
    linear-gradient(-45deg, transparent 75%, #000 75%) 8px 8px/16px 16px,
    #fff;
  position: relative;
}
.qr-box .qr-img::after {
  content: "扫码下载";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--c-coral);
  background: rgba(255, 255, 255, 0.85);
}
.qr-box .qr-label { font-weight: 700; font-size: 0.85rem; color: var(--c-ink-2); }

.download-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 50px; }
.dl-feature {
  background: var(--c-white);
  border-radius: var(--r-lg);
  padding: 28px 22px;
  box-shadow: var(--sh-sm);
  border: 1px solid var(--c-line);
  text-align: center;
  transition: var(--tr);
}
.dl-feature:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.dl-feature .ico {
  width: 50px; height: 50px;
  border-radius: 14px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  color: #fff;
}
.dl-feature h4 { font-weight: 800; margin-bottom: 6px; }
.dl-feature p { font-size: 0.88rem; color: var(--c-ink-2); }

/* ---------- 数据条 ---------- */
.stats-bar {
  background: var(--c-white);
  border-radius: var(--r-xl);
  padding: 44px;
  box-shadow: var(--sh-md);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border: 1px solid var(--c-line);
}
.stat-item { text-align: center; }
.stat-item .num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}
.stat-item .label { font-size: 0.9rem; color: var(--c-ink-2); margin-top: 8px; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background: var(--grad-berry);
  border-radius: var(--r-xl);
  padding: 60px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band::before, .cta-band::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}
.cta-band::before { width: 300px; height: 300px; top: -100px; left: -80px; }
.cta-band::after { width: 200px; height: 200px; bottom: -80px; right: -40px; }
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.cta-band p { font-size: 1.05rem; opacity: 0.95; margin-bottom: 26px; }

/* ---------- 流程时间线 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step {
  background: var(--c-white);
  border-radius: var(--r-lg);
  padding: 30px 24px;
  box-shadow: var(--sh-sm);
  border: 1px solid var(--c-line);
  position: relative;
  transition: var(--tr);
}
.step:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.step .num-badge {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--grad-hero);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 18px;
  box-shadow: var(--sh-glow);
}
.step h4 { font-weight: 800; margin-bottom: 8px; }
.step p { font-size: 0.9rem; color: var(--c-ink-2); }

/* ---------- 核验/声明区块 ---------- */
.verify-card {
  background: var(--c-white);
  border-radius: var(--r-lg);
  padding: 36px;
  box-shadow: var(--sh-md);
  border: 1px solid var(--c-line);
  border-left: 5px solid var(--c-mint);
}
.verify-card h3 { font-weight: 800; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.verify-card h3 .ico { font-size: 1.4rem; }
.verify-list li {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--c-line);
  font-size: 0.94rem;
  color: var(--c-ink-2);
}
.verify-list li:last-child { border-bottom: none; }
.verify-list .tick {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--grad-mint);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 800;
  margin-top: 2px;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--c-ink);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 30px;
  margin-top: 80px;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer .logo { color: #fff; margin-bottom: 16px; }
.footer-about p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-col h5 { color: #fff; font-weight: 700; margin-bottom: 18px; font-size: 1rem; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 0.9rem; transition: var(--tr); }
.footer-col ul a:hover { color: var(--c-coral); padding-left: 4px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  transition: var(--tr);
}
.footer-social a:hover { background: var(--grad-hero); transform: translateY(-3px); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.85rem;
}
.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom a:hover { color: var(--c-coral); }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 50px; height: 50px;
  border-radius: 50%;
  background: var(--grad-hero);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  box-shadow: var(--sh-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--tr);
  z-index: 90;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-4px) scale(1.05); }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(45, 52, 54, 0.6);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: var(--tr);
  padding: 20px;
}
.modal-mask.open { opacity: 1; visibility: visible; }
.modal {
  background: var(--c-white);
  border-radius: var(--r-xl);
  padding: 36px;
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: var(--sh-lg);
  transform: scale(0.9);
  transition: var(--tr-back);
}
.modal-mask.open .modal { transform: scale(1); }
.modal .modal-ico {
  width: 70px; height: 70px;
  border-radius: 20px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  font-size: 2rem;
  color: #fff;
  background: var(--grad-hero);
  box-shadow: var(--sh-glow);
}
.modal h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 12px; }
.modal p { color: var(--c-ink-2); margin-bottom: 24px; }
.modal .modal-close {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--c-cream-2);
  color: var(--c-ink-2);
  font-size: 1.2rem;
  margin-left: auto;
}
.modal .modal-close:hover { background: var(--c-coral); color: #fff; }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: var(--tr-back); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

/* ---------- 分页 ---------- */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 44px; }
.pagination a, .pagination span {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 700;
  background: var(--c-white);
  box-shadow: var(--sh-sm);
  transition: var(--tr);
  color: var(--c-ink-2);
}
.pagination a:hover { color: var(--c-coral); transform: translateY(-2px); }
.pagination .active { background: var(--grad-hero); color: #fff; box-shadow: var(--sh-glow); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 380px; max-width: 420px; margin: 0 auto; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .download-features { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 70px; left: 16px; right: 16px;
    flex-direction: column;
    align-items: stretch;
    background: var(--c-white);
    border-radius: var(--r-lg);
    padding: 16px;
    box-shadow: var(--sh-lg);
    gap: 4px;
    transform: translateY(-15px);
    opacity: 0;
    visibility: hidden;
    transition: var(--tr);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-links a { padding: 14px 18px; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav-links.open .nav-cta { display: inline-flex; }
  .hero { padding: 120px 0 60px; }
  .hero-stats { gap: 20px; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); padding: 30px 20px; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .download-hero, .cta-band { padding: 40px 24px; }
  .download-features { grid-template-columns: 1fr; }
  .sec { padding: 60px 0; }
  .hero-visual { height: 340px; }
  .h-card-sub { width: 150px; height: 200px; }
  .h-card-float { width: 110px; height: 110px; right: 20px; }
}
@media (max-width: 420px) {
  .hero-actions .btn { width: 100%; }
  .dl-buttons .dl-btn { width: 100%; }
}