/* ============================================================
   jinzhuanruowangcomcn - 全站样式（本地化，无外部CDN）
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --primary: #0b2447;
  --primary-2: #103a72;
  --accent: #1d8be3;
  --accent-2: #19c8e0;
  --cta: #ff8a1e;
  --cta-2: #ff6f00;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafd;
  --ink: #15233b;
  --ink-2: #43536d;
  --muted: #8597b1;
  --line: #e2e9f2;
  --line-2: #c9d5e4;
  --ok: #19b66b;
  --warn: #e0a319;
  --danger: #e24c4c;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 26px;
  --shadow-sm: 0 2px 8px rgba(15, 35, 70, .06);
  --shadow: 0 8px 26px rgba(15, 35, 70, .10);
  --shadow-lg: 0 18px 48px rgba(15, 35, 70, .16);
  --container: 1180px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "微软雅黑",
    "Noto Sans SC", "Hiragino Sans GB", "Source Han Sans CN",
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--cta-2); }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(28px, 4vw, 40px); }
h2 { font-size: clamp(22px, 2.6vw, 30px); }
h3 { font-size: clamp(18px, 2vw, 22px); }
p { margin: 0 0 1em; color: var(--ink-2); }

.container {
  width: min(var(--container), 92%);
  margin: 0 auto;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.nav-logo img {
  height: 52px;
  width: auto;
  display: block;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-links a {
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
  padding: 8px 4px;
  position: relative;
}
.nav-links a:hover, .nav-links a.is-active {
  color: var(--primary);
}
.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -22px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  position: relative;
  transition: transform .25s ease;
}
.nav-toggle span { width: 24px; margin: 0 auto; }
.nav-toggle span::before { position: absolute; width: 24px; top: -8px; left: 0; }
.nav-toggle span::after { position: absolute; width: 24px; top: 8px; left: 0; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: translateY(8px) rotate(45deg); }
.nav-open .nav-toggle span::after { transform: translateY(-8px) rotate(-45deg); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: .5px;
  border: 0;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--cta), var(--cta-2));
  box-shadow: 0 10px 24px rgba(255, 138, 30, .35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(255, 138, 30, .45);
  color: #fff;
}
.btn-ghost {
  color: var(--primary);
  background: rgba(255, 255, 255, .8);
  border: 1.5px solid var(--line-2);
}
.btn-ghost:hover { color: var(--primary); background: #fff; }
.btn-dark {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
.btn-dark:hover { color: #fff; }
.btn .ico { display: inline-flex; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(29, 139, 227, .35), transparent 60%),
    radial-gradient(900px 500px at 10% 30%, rgba(25, 200, 224, .25), transparent 60%),
    linear-gradient(135deg, #071b36 0%, #0e2e57 60%, #103a72 100%);
  color: #eaf3ff;
  padding: 72px 0 96px;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -60% -10%;
  height: 220px;
  background: var(--bg);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  transform: scaleX(1.2);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero h1 {
  color: #fff;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.2;
  margin-bottom: 18px;
}
.hero h1 span {
  background: linear-gradient(120deg, #ffe39a 0%, #ffb14d 50%, #ffe39a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 17px;
  color: #c9dcf2;
  max-width: 560px;
  margin-bottom: 28px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-bottom: 28px;
  color: #c9dcf2;
  font-size: 14px;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid rgba(180, 210, 240, .25);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
}
.hero-trust .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 0 4px rgba(25, 200, 224, .18);
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note {
  margin-top: 18px;
  font-size: 13px;
  color: #8aa6c6;
}

/* 手机外框预览 */
.phone-stage {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 18px;
}
.phone-frame {
  position: relative;
  border-radius: 38px;
  background: linear-gradient(180deg, #0a1b36, #122c5a);
  padding: 12px;
  box-shadow:
    0 30px 80px rgba(0, 20, 50, .55),
    inset 0 0 0 2px rgba(255, 255, 255, .08);
}
.phone-frame::before {
  content: "";
  position: absolute;
  top: 22px; left: 50%;
  transform: translateX(-50%);
  width: 110px; height: 18px;
  background: #061226;
  border-radius: 0 0 14px 14px;
}
.phone-frame img {
  width: 100%;
  border-radius: 28px;
  display: block;
}
.phone-frame .ring {
  position: absolute;
  inset: -16px;
  border-radius: 50px;
  background: conic-gradient(from 180deg, rgba(25,200,224,0), rgba(25,200,224,.35), rgba(29,139,227,0), rgba(255,138,30,.35), rgba(25,200,224,0));
  filter: blur(28px);
  opacity: .55;
  z-index: -1;
}

/* ---------- 通用区块 ---------- */
.section {
  padding: 72px 0;
  position: relative;
}
.section--alt {
  background: var(--surface-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(29, 139, 227, .12);
  margin-bottom: 14px;
}
.section-head h2 {
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--ink-2);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  padding: 28px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .2s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--line-2);
}
.card-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  margin-bottom: 16px;
  box-shadow: 0 8px 18px rgba(29, 139, 227, .25);
}
.card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}
.card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 15px;
}

.grid {
  display: grid;
  gap: 22px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* ---------- 截图轮播/画廊 ---------- */
.shot-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.shot-item {
  background: linear-gradient(180deg, #0c2548, #122d58);
  border-radius: 24px;
  padding: 16px 12px 22px;
  text-align: center;
  border: 1px solid rgba(120, 180, 230, .15);
  box-shadow: 0 18px 40px rgba(8, 25, 55, .25);
  transition: transform .3s ease;
}
.shot-item:hover { transform: translateY(-6px); }
.shot-item img {
  width: 100%;
  border-radius: 18px;
  display: block;
}
.shot-item .shot-cap {
  margin-top: 14px;
  color: #cfe1f7;
  font-size: 14px;
  font-weight: 500;
}

/* ---------- 数据统计条 ---------- */
.stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 28px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #eaf3ff;
  box-shadow: var(--shadow-lg);
}
.stat-band .stat {
  text-align: center;
}
.stat .num {
  font-size: 30px;
  font-weight: 700;
  background: linear-gradient(135deg, #ffe39a, #ffb14d);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat .lbl {
  font-size: 13px;
  color: #b9cce6;
  margin-top: 4px;
}

/* ---------- 适用场景 ---------- */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.scene {
  background: var(--surface);
  border-radius: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  transition: all .2s ease;
  position: relative;
  overflow: hidden;
}
.scene::before {
  content: "";
  position: absolute;
  top: -30px; right: -30px;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(25,200,224,.2), transparent 70%);
}
.scene:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}
.scene .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(29, 139, 227, .12);
  color: var(--accent);
  margin-bottom: 12px;
}
.scene h4 {
  margin: 0 0 6px;
  font-size: 17px;
}
.scene p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

/* ---------- 深度内容入口 ---------- */
.deep-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.deep-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .25s ease;
}
.deep-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.deep-card .badge {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(29, 139, 227, .12);
  margin-bottom: 14px;
}
.deep-card h3 {
  margin-bottom: 10px;
  font-size: 19px;
}
.deep-card p {
  font-size: 14px;
  color: var(--ink-2);
  margin-bottom: 16px;
  flex: 1;
}
.deep-card .more {
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ---------- 评价摘要 ---------- */
.review-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.review-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 26px;
  position: relative;
}
.review-card .stars {
  color: #f6b13b;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.review-card p {
  margin: 0 0 14px;
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.8;
}
.review-card .who {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-card .avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.review-card .who .name { font-weight: 600; color: var(--ink); font-size: 14px; }
.review-card .who .role { font-size: 12px; color: var(--muted); }

/* ---------- FAQ 摘要列表 ---------- */
.faq-mini { max-width: 820px; margin: 0 auto; }
.faq-mini details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 12px;
  transition: border-color .2s ease;
}
.faq-mini details[open] { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.faq-mini summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-mini summary::-webkit-details-marker { display: none; }
.faq-mini summary .plus {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(29, 139, 227, .12);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s ease;
  flex-shrink: 0;
}
.faq-mini details[open] summary .plus { transform: rotate(45deg); }
.faq-mini .answer {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 底部下载条 ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(800px 400px at 80% 20%, rgba(255, 138, 30, .35), transparent 60%),
    linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.cta-band h2 { color: #fff; margin-bottom: 14px; }
.cta-band p { color: #cfdef0; margin-bottom: 28px; }
.cta-band .btn-row { display: inline-flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

/* ---------- 底部页脚 ---------- */
.site-footer {
  background: #061730;
  color: #b9cce6;
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-col h5 {
  color: #fff;
  font-size: 14px;
  margin: 0 0 14px;
  letter-spacing: 1px;
}
.footer-col a, .footer-col li {
  color: #b9cce6;
  font-size: 14px;
  display: block;
  margin-bottom: 8px;
  list-style: none;
}
.footer-col a:hover { color: #fff; }
.footer-col p { color: #93a8c4; font-size: 13.5px; line-height: 1.8; margin: 0; }
.footer-logo img { height: 44px; }
.disclaimer {
  font-size: 12.5px;
  color: #7f93b0;
  line-height: 1.8;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, .08);
  margin-top: 16px;
}
.copyright {
  text-align: center;
  font-size: 13px;
  color: #6f87a8;
  padding-top: 12px;
}

/* ---------- 内页通用 ---------- */
.page-hero {
  background:
    radial-gradient(700px 360px at 80% 0%, rgba(29,139,227,.25), transparent 60%),
    linear-gradient(135deg, #071b36, #103a72);
  color: #eaf3ff;
  padding: 60px 0 48px;
}
.breadcrumb {
  font-size: 13px;
  color: #b9cce6;
  margin-bottom: 14px;
}
.breadcrumb a { color: #b9cce6; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 {
  color: #fff;
  font-size: clamp(28px, 3.6vw, 38px);
  margin-bottom: 12px;
}
.page-hero .lead {
  color: #cfdef0;
  font-size: 16px;
  max-width: 720px;
  margin: 0;
}
.article {
  padding: 56px 0 24px;
}
.article-inner {
  max-width: 880px;
  margin: 0 auto;
}
.article h2 {
  margin-top: 36px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.article h3 { margin-top: 26px; color: var(--primary); }
.article p, .article li {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-2);
}
.article ul, .article ol { padding-left: 1.2em; }
.article li { margin-bottom: 6px; }
.article blockquote {
  margin: 22px 0;
  padding: 16px 22px;
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}
.article .callout {
  background: rgba(29, 139, 227, .08);
  border: 1px solid rgba(29, 139, 227, .2);
  border-radius: 14px;
  padding: 18px 22px;
  margin: 22px 0;
  color: var(--ink);
}
.article .callout.warn {
  background: rgba(224, 163, 25, .10);
  border-color: rgba(224, 163, 25, .25);
}
.article .step {
  display: flex;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.article .step .num {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 18px rgba(29, 139, 227, .25);
}
.article .step h4 {
  margin: 4px 0 8px;
  font-size: 17px;
}
.article .step p { margin: 0; font-size: 14.5px; }

/* 参数表 */
.param-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 28px;
  background: var(--surface);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
}
.param-table th, .param-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.param-table th {
  background: var(--surface-2);
  font-weight: 700;
  color: var(--primary);
}
.param-table tr:last-child td { border-bottom: 0; }

/* 相关文章 */
.related {
  margin-top: 48px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
}
.related h3 { margin-bottom: 14px; }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
}
.related li:last-child { border-bottom: 0; }
.related li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink);
  font-weight: 500;
}
.related li a:hover { color: var(--accent); }
.related .arrow { color: var(--muted); }

/* 回到顶部 */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 28px rgba(29, 139, 227, .35);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 40;
}
.to-top.is-visible {
  opacity: 1;
  visibility: visible;
}
.to-top:hover { transform: translateY(-3px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .deep-grid { grid-template-columns: repeat(2, 1fr); }
  .shot-row { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .review-row { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 18px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .2s ease, opacity .2s ease;
  }
  .nav-open .nav-links {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }
  .nav-links a.is-active::after { display: none; }
  .nav-toggle { display: block; }
  .nav-cta .btn { padding: 10px 18px; font-size: 14px; }
  .hero { padding: 56px 0 80px; }
  .section { padding: 52px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .deep-grid { grid-template-columns: 1fr; }
  .shot-row { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr 1fr; }
  .stat-band { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 48px 0; }
  .phone-frame { width: 240px; }
}

/* 可访问性 */
:focus-visible {
  outline: 3px solid rgba(29, 139, 227, .35);
  outline-offset: 2px;
  border-radius: 8px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.nav-logo img {
  height: 52px;
  width: auto;
  display: block;
}

.nav-logo .brand-text {
  display: flex;
  align-items: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
}

.nav-logo .brand-text strong {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;          /* 渐变文字效果 */
}