/* 短视频服务报价页 —— 简约高级（苹果风：黑白灰 + 品牌蓝点缀） */
:root {
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-soft: #eef6ff;
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --text: #1d1d1f;
  --text-sub: #6e6e73;
  --line: #e8e8ed;
  --card: #ffffff;
  --radius: 20px;
  --radius-sm: 12px;
  --gold: #b38600;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 导航 */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.nav-brand { display: inline-flex; align-items: center; gap: 11px; }
.nav-brand .brand-link {
  display: inline-flex; align-items: center; gap: 11px;
  color: var(--text); text-decoration: none;
}
.nav-brand .logo { height: 46px; width: auto; display: block; object-fit: contain; }
.nav-brand .name { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.nav-back {
  color: var(--text); text-decoration: none; font-size: 14px;
  transition: color .2s;
}
.nav-back:hover { color: var(--accent); }

/* 主区域 */
main { max-width: 1140px; margin: 0 auto; padding: 0 24px 96px; }

/* 页头 */
.hero { text-align: center; padding: 72px 0 40px; }
.eyebrow {
  color: var(--accent); font-size: 13px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 16px;
}
.hero h1 {
  font-size: 48px; font-weight: 700; letter-spacing: -0.03em;
  line-height: 1.1; margin-bottom: 18px;
}
.hero-sub { font-size: 18px; color: var(--text-sub); max-width: 640px; margin: 0 auto; }
.hero-note {
  margin-top: 22px; font-size: 13px; color: var(--text-sub);
  display: inline-block; padding: 8px 18px; border-radius: 980px;
  background: var(--bg-soft);
}

/* 服务区块 */
.service { margin-top: 56px; }
.service#shooting {
  margin-top: 88px; padding-top: 56px; border-top: 1px solid var(--line);
}
.service-head { max-width: 760px; }
.service-eyebrow {
  color: var(--accent); font-size: 12px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
}
.service-title {
  font-size: 32px; font-weight: 700; letter-spacing: -0.02em;
  margin-top: 8px;
}
.service-sub { font-size: 16px; color: var(--text-sub); margin-top: 10px; }
.service-note {
  font-size: 13px; color: var(--text-sub); margin-top: 14px;
  padding: 10px 16px; border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

/* 分类区块 */
.category { margin-top: 40px; }
.category + .category {
  margin-top: 44px; padding-top: 40px; border-top: 1px solid var(--line);
}
.category-head { margin-bottom: 22px; }
.category-title {
  font-size: 20px; font-weight: 700; letter-spacing: -0.01em;
  position: relative; padding-left: 14px;
}
.category-title::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 4px; height: 20px; border-radius: 2px; background: var(--accent);
}
.category-desc { color: var(--text-sub); font-size: 13px; margin-top: 4px; padding-left: 14px; }

/* 卡片：单列全宽，左文字右视频 */
.tiers {
  display: flex; flex-direction: column; gap: 20px;
}
/* 无视频档位（拍摄服务）：左右并排 */
.tiers.tiers-row {
  flex-direction: row; flex-wrap: wrap; gap: 16px; align-items: stretch;
}
.tiers.tiers-row .card { flex: 1 1 300px; min-width: 0; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: stretch;
  position: relative; overflow: hidden;
  transition: box-shadow .25s, border-color .25s;
}
.card.has-video { grid-template-columns: 1fr minmax(300px, 460px); }
.card:hover {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 113, 227, 0.22);
}
/* 精剪/高难度档位强调 */
.card.featured { border-color: rgba(0, 113, 227, 0.4); }
.card.featured::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), #63a4ff);
}

.card-main { display: flex; flex-direction: column; gap: 16px; min-width: 0; }

.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.card-title { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; }
.card-tag {
  font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
  padding: 3px 10px; border-radius: 980px; flex-shrink: 0; margin-top: 3px;
  color: var(--text-sub); background: var(--bg-soft);
}
.card-tag.lv { color: var(--accent); background: var(--accent-soft); }

.stars { color: var(--gold); font-size: 13px; letter-spacing: 0.1em; margin-top: 2px; }
.card-tagline { color: var(--text-sub); font-size: 14px; }

/* 价格区 */
.card-price { padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.price-main { font-size: 38px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.price-main .unit { font-size: 15px; font-weight: 500; color: var(--text-sub); margin-left: 4px; letter-spacing: 0; }
.price-list { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 6px; }
.price-list li {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 14px; color: var(--text-sub); gap: 12px;
}
.price-list li .k { flex-shrink: 0; }
.price-list li .v { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
.price-overtime { margin-top: 12px; font-size: 12px; color: var(--text-sub); }

/* 包含项 */
.card-includes h4, .card-advanced h4 {
  font-size: 13px; font-weight: 600; color: var(--text-sub);
  letter-spacing: 0.04em; margin-bottom: 10px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13px; color: var(--text); background: var(--bg-soft);
  padding: 5px 12px; border-radius: 980px;
}
.chip.advanced {
  color: var(--accent); background: var(--accent-soft); font-weight: 500;
}

/* 「贵在哪」进阶说明 */
.card-upgrade {
  font-size: 13px; color: var(--accent);
  background: var(--accent-soft); border-radius: var(--radius-sm);
  padding: 12px 14px; line-height: 1.6;
}
.card-upgrade b { font-weight: 600; }

/* 视频区（右侧完整显示，不裁切） */
.card-video {
  display: flex; flex-direction: column; gap: 12px;
  justify-content: center; min-width: 0;
}
.card-video video {
  width: 100%; max-height: 460px; object-fit: contain;
  border-radius: var(--radius-sm); background: #111; display: block;
}
.video-placeholder {
  aspect-ratio: 16 / 9; border-radius: var(--radius-sm); background: #111;
  color: rgba(255, 255, 255, 0.6); text-align: center;
  font-size: 13px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  width: 100%;
}
.video-placeholder .play {
  width: 54px; height: 54px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
}
.video-placeholder .play::after {
  content: ""; border-style: solid; border-width: 9px 0 9px 14px;
  border-color: transparent transparent transparent #fff; margin-left: 4px;
}

/* 分类「参考说明」折叠块 */
.category-note { margin-top: 18px; }
.category-note summary {
  cursor: pointer; font-size: 13px; font-weight: 600; color: var(--accent);
  list-style: none; user-select: none;
}
.category-note summary::-webkit-details-marker { display: none; }
.category-note summary::before { content: "▸ "; }
.category-note[open] summary::before { content: "▾ "; }
.category-note-body {
  margin-top: 10px; font-size: 13px; color: var(--text-sub); line-height: 1.8;
  padding: 14px 16px; border-radius: var(--radius-sm); background: var(--bg-soft);
}

/* 条款区 */
.policies { margin-top: 88px; }
.policies-head { margin-bottom: 26px; }
.policies-head h2 { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.policies-head p { color: var(--text-sub); font-size: 15px; margin-top: 4px; }

.policy-box {
  background: var(--bg-soft); border-radius: var(--radius); padding: 28px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px 36px;
}
/* 合作约定：左右两栏，中间竖线 */
.policy-box.cols-2 {
  grid-template-columns: 1fr 1fr;
  gap: 26px 56px;
  position: relative;
}
.policy-box.cols-2::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 28px;
  bottom: 28px;
  width: 1px;
  background: var(--line);
}
.policy-group h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.policy-group ul { list-style: none; }
.policy-group li {
  position: relative; padding-left: 16px; color: var(--text-sub);
  font-size: 14px; line-height: 1.7; margin-bottom: 7px;
}
.policy-group li:last-child { margin-bottom: 0; }
.policy-group li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}

.footer {
  text-align: center; padding: 44px 24px; color: var(--text-sub); font-size: 13px;
  border-top: 1px solid var(--line);
}
.footer .brand { font-weight: 600; color: var(--text); }

@media (max-width: 860px) {
  .card, .card.has-video { grid-template-columns: 1fr; gap: 20px; }
  .card-video video { max-height: 420px; }
}

@media (max-width: 640px) {
  .nav { padding: 12px 16px; }
  .nav-brand .logo { height: 38px; }
  main { padding: 0 16px 72px; }
  .hero { padding: 48px 0 24px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .service-title { font-size: 26px; }
  .service { margin-top: 40px; }
  .service + .service { margin-top: 64px; padding-top: 40px; }
  .category { margin-top: 32px; }
  .category + .category { margin-top: 36px; padding-top: 32px; }
  .category-title { font-size: 18px; }
  .card { padding: 22px; }
  .card-title { font-size: 20px; }
  .price-main { font-size: 32px; }
  .policy-box { grid-template-columns: 1fr; }
  .policy-box.cols-2 { grid-template-columns: 1fr; }
  .policy-box.cols-2::before { display: none; }
  .tiers.tiers-row { flex-direction: column; }
}