/* ============================================================
   Hidden Bar 中文官网 · www.hiddenbar.cn
   设计系统：扁平 / 现代 / 专业（Apple 风黑白灰 + 品牌蓝点缀）
   ============================================================ */
:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f6f6f8;
  --c-bg-mute: #eeeef1;
  --c-ink: #17171a;
  --c-ink-2: #3c3c42;
  --c-ink-3: #6d6d76;
  --c-line: #e3e3e9;
  --c-line-strong: #d5d5dd;
  --c-brand: #2f6bff;
  --c-brand-2: #5e8bff;
  --c-brand-dark: #1f53db;
  --c-green: #30b455;
  --c-amber: #e8930c;
  --c-red: #e5342a;
  --c-night: #0a0a0c;
  --c-night-2: #131318;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 8px 28px rgba(20, 22, 36, 0.08);
  --shadow-lg: 0 16px 48px rgba(20, 22, 36, 0.16);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --wrap: 1120px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-ink);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-brand); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { padding-left: 1.2em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- 跳转到主内容（无障碍） ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--c-ink); color: #fff; padding: 10px 18px; z-index: 200; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--c-line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; color: var(--c-ink); font-weight: 600; font-size: 19px; }
.nav-brand:hover { text-decoration: none; }
.nav-brand img { width: 30px; height: 30px; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; padding: 0; }
.nav-links a { color: var(--c-ink-2); font-size: 15px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--c-ink); text-decoration: none; }
.nav-links a[aria-current="page"] { font-weight: 600; }
.nav-cta {
  background: linear-gradient(135deg, #3a72ff, #2f6bff); color: #fff !important; padding: 8px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 500; transition: box-shadow 0.2s, filter 0.2s;
  box-shadow: 0 2px 10px rgba(47, 107, 255, 0.35);
}
.nav-cta:hover { filter: brightness(1.08); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { display: block; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  border: none; cursor: pointer; font-family: inherit;
  border-radius: 999px; font-weight: 500; text-decoration: none !important;
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(135deg, #3a72ff 0%, #2f6bff 45%, #1f53db 100%);
  color: #fff;
  padding: 15px 36px; font-size: 17px;
  box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn-primary:hover { background: linear-gradient(135deg, #4a80ff 0%, #3a72ff 45%, #2a5fe8 100%); }
.btn-ghost {
  background: transparent; color: var(--c-ink);
  padding: 15px 32px; font-size: 17px; border: 1px solid var(--c-line);
}
.btn-ghost:hover { background: var(--c-bg-soft); }
.btn-lg { padding: 18px 46px; font-size: 19px; }
.btn:focus-visible, a:focus-visible, button:focus-visible {
  outline: 3px solid var(--c-brand); outline-offset: 3px;
}

/* ---------- Hero 区（深空高端风） ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 480px at 78% -12%, rgba(47, 107, 255, 0.22), transparent 62%),
    radial-gradient(760px 420px at 8% 108%, rgba(94, 139, 255, 0.12), transparent 58%),
    linear-gradient(175deg, #0a0a0c 0%, #101017 58%, #14141c 100%);
  padding: 92px 0 80px;
  overflow: hidden;
}
.hero::after { /* 顶部细光线 */
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(120, 150, 255, 0.35), transparent);
}
.hero-grid { display: flex; align-items: center; gap: 48px; position: relative; z-index: 1; }
.hero-text { flex: 1.05; min-width: 0; }
.hero-visual { flex: 0.95; min-width: 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em;
  color: #8fb0ff; text-transform: uppercase; margin-bottom: 16px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(47, 107, 255, 0.12); border: 1px solid rgba(94, 139, 255, 0.28);
}
.hero h1 {
  font-size: clamp(34px, 5vw, 54px); line-height: 1.14; letter-spacing: -0.022em; font-weight: 700;
  color: #f5f5f8;
  background: linear-gradient(180deg, #ffffff 30%, #c9cdd8 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero .sub { font-size: 19px; color: #a7a7b2; margin: 18px 0 8px; max-width: 560px; line-height: 1.75; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 16px 0 32px; font-size: 14px; color: #8d8d98; }
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-green); box-shadow: 0 0 8px rgba(48, 180, 85, 0.7); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.hero-note { font-size: 13px; color: #7c7c88; margin-top: 16px; }
.hero-note a { color: #a7b6dd; text-decoration: underline; text-underline-offset: 3px; }

/* Hero 主按钮：钴蓝渐变 */
.hero .btn-primary {
  background: linear-gradient(135deg, #3a72ff 0%, #2f6bff 45%, #1f53db 100%);
  box-shadow: 0 6px 22px rgba(47, 107, 255, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.hero .btn-primary:hover { background: linear-gradient(135deg, #4a80ff 0%, #3a72ff 45%, #2a5fe8 100%); }
.hero .btn-ghost {
  color: #d5d5de; border-color: rgba(160, 160, 175, 0.35); background: rgba(255, 255, 255, 0.03);
}
.hero .btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(180, 180, 200, 0.5); }

/* Hero 产品图 */
.hero-shot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.04);
}
.hero-shot img { width: 100%; display: block; }
.hero-shot-cap {
  text-align: center; font-size: 13px; color: #82828d; margin-top: 14px;
}

/* ---------- 菜单栏模拟图（备用，旧组件保留） ---------- */
.menubar-card {
  background: var(--c-bg-mute);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  box-shadow: var(--shadow);
}
.menubar-card .fake-screen {
  background: linear-gradient(180deg, #fbfbfd 0%, #f3f3f5 100%);
  border: 1px solid var(--c-line); border-radius: 10px; overflow: hidden;
}
.menubar-strip {
  display: flex; align-items: center; height: 44px; padding: 0 14px; gap: 6px;
  background: rgba(255,255,255,0.75); border-bottom: 1px solid rgba(0,0,0,0.06);
}
.menubar-strip .apple { width: 15px; height: 15px; fill: var(--c-ink); }
.menubar-strip .menu-word { font-size: 13px; color: #3a3a3c; padding: 0 8px; font-weight: 500; }
.menubar-strip .spring { flex: 1; }
.menubar-strip .icon { width: 17px; height: 17px; opacity: 0.92; }
.menubar-strip .icon-btn {
  width: 24px; height: 24px; border-radius: 6px; display: inline-flex;
  align-items: center; justify-content: center; background: none; border: none; cursor: pointer;
}
.menubar-strip .icon-btn:hover { background: rgba(0,0,0,0.06); }
.menubar-strip .chev {
  width: 22px; height: 22px; border-radius: 6px; display: inline-flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.05); cursor: pointer; border: none; transition: background 0.2s;
}
.menubar-strip .chev:hover { background: rgba(0,0,0,0.12); }
.menubar-strip .chev svg { width: 12px; height: 12px; }
.menubar-strip .chev .bar { width: 2px; height: 12px; background: var(--c-ink); margin: 0 5px; border-radius: 1px; }
.menubar-strip .chev.on .chev-svg { display: none; }
.menubar-strip .chev .chev-svg { display: block; }
.menubar-strip .clock { font-size: 13px; color: #1d1d1f; white-space: nowrap; padding-left: 6px; }
.hidden-icons { display: flex; align-items: center; gap: 6px; }
.hidden-icons .icon-btn { transition: opacity 0.25s; }
.hidden-icons.collapsed .icon-btn { display: none; }
.hidden-icons .chev.on svg.chev-l { transform: rotate(180deg); }
.fake-window {
  height: 190px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  background:
    radial-gradient(circle at 30% 20%, rgba(0,113,227,0.05), transparent 55%),
    radial-gradient(circle at 75% 80%, rgba(52,199,89,0.05), transparent 50%);
}
.fake-window p { font-size: 13px; color: var(--c-ink-3); }
.fake-window .tip { font-size: 12px; color: var(--c-ink-3); }
.menubar-card .caption { text-align: center; font-size: 13px; color: var(--c-ink-3); margin-top: 14px; }

/* ---------- 通用 Section ---------- */
.section { padding: 88px 0; }
.section.alt { background: var(--c-bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head h2 { font-size: clamp(28px, 4vw, 38px); letter-spacing: -0.01em; font-weight: 700; }
.section-head p { color: var(--c-ink-3); font-size: 18px; margin-top: 12px; }

/* ---------- 徽章 / 数据 ---------- */
.badge-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 22px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--c-line); border-radius: 999px;
  padding: 7px 16px; font-size: 14px; color: var(--c-ink-2);
  box-shadow: 0 1px 3px rgba(20, 22, 36, 0.05);
}
.badge svg { width: 15px; height: 15px; }

/* ---------- 使用场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.scene {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 30px; transition: box-shadow 0.2s, transform 0.2s;
}
.scene:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.scene .scene-icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--c-bg-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.scene .scene-icon svg { width: 22px; height: 22px; stroke: var(--c-ink); }
.scene h3 { font-size: 19px; margin-bottom: 8px; }
.scene p { font-size: 15px; color: var(--c-ink-3); }

/* ---------- 优势卡片 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 30px;
}
.feat .feat-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
  background: rgba(0, 113, 227, 0.1);
}
.feat .feat-icon svg { width: 22px; height: 22px; stroke: var(--c-brand); }
.feat h3 { font-size: 18px; margin-bottom: 8px; }
.feat p { font-size: 15px; color: var(--c-ink-3); }

/* ---------- 数字带（品牌蓝渐变高端版） ---------- */
.stats-band {
  background: linear-gradient(160deg, #0c1226 0%, #101a3a 48%, #0c1226 100%);
  color: #fff; padding: 64px 0; position: relative; overflow: hidden;
}
.stats-band::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(680px 260px at 18% 0%, rgba(47, 107, 255, 0.25), transparent 60%),
    radial-gradient(560px 240px at 85% 100%, rgba(94, 139, 255, 0.16), transparent 58%);
}
.stats-band .stats-grid { position: relative; z-index: 1; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats-grid .num {
  font-size: clamp(30px, 4vw, 44px); font-weight: 700; letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff 20%, #9db8ff 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stats-grid .num small { font-size: 0.55em; font-weight: 500; margin-left: 2px; }
.stats-grid .lbl { font-size: 14px; color: rgba(215, 222, 240, 0.72); margin-top: 6px; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: step; }
.step { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg); padding: 28px; position: relative; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-size: 15px; font-weight: 700;
  font-family: var(--font-mono); display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 12px; margin-bottom: 14px;
  color: var(--c-brand); background: rgba(47, 107, 255, 0.09); border: 1px solid rgba(47, 107, 255, 0.18);
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 15px; color: var(--c-ink-3); }

/* ---------- 代码块 ---------- */
.code-block {
  background: var(--c-ink); color: #f5f5f7; border-radius: var(--radius);
  padding: 20px 24px; font-family: var(--font-mono); font-size: 15px;
  overflow-x: auto; line-height: 1.8;
}
.code-block .prompt { color: #64d2ff; user-select: none; }
.code-block code { font-family: inherit; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; }
table.data { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 640px; }
table.data th, table.data td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--c-bg-mute); vertical-align: middle; }
table.data th { background: var(--c-bg-soft); font-weight: 600; white-space: nowrap; }
table.data tr:last-child td { border-bottom: none; }
table.data .ver { font-family: var(--font-mono); font-weight: 600; }
table.data .ok { color: var(--c-green); font-weight: 600; }
table.data .muted { color: var(--c-ink-3); font-size: 13px; }
.sha-cell { font-family: var(--font-mono); font-size: 12px; color: var(--c-ink-3); word-break: break-all; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; margin: 0 auto; }
details.faq {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden;
}
details.faq summary {
  list-style: none; cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary .chev-icon { flex: none; transition: transform 0.25s; }
details.faq[open] summary .chev-icon { transform: rotate(180deg); }
details.faq .faq-body { padding: 0 22px 20px; color: var(--c-ink-3); font-size: 15px; }
details.faq .faq-body p + p { margin-top: 10px; }
details.faq .faq-body code { background: var(--c-bg-mute); padding: 2px 7px; border-radius: 5px; font-family: var(--font-mono); font-size: 13px; color: var(--c-ink); }

/* ---------- 下载弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5); z-index: 300;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; visibility: hidden; transition: opacity 0.25s, visibility 0.25s;
}
.modal-overlay.open { opacity: 1; visibility: visible;   left: 0;
  right: 0;
  top: 0;
  bottom: 0;}
  button { outline: none } 
.modal {
  background: #fff; border-radius: 18px; box-shadow: var(--shadow-lg);
  width: 100%; max-width: 720px; max-height: 90vh; overflow-y: auto;
  transform: translateY(16px) scale(0.97); transition: transform 0.25s; position: relative;
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border-radius: 50%;
  background: var(--c-bg-mute); border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; color: var(--c-ink-3);
}
.modal-close:hover { background: var(--c-line); }
.modal-head { padding: 32px 32px 8px; text-align: center; }
.modal-head .modal-icon { width: 56px; height: 56px; margin: 0 auto 14px; }
.modal-head h3 { font-size: 22px; }
.modal-head p { color: var(--c-ink-3); font-size: 14px; margin-top: 6px; }
.modal-qrs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 24px 32px 10px; }
.qr-item {
  border: 1px solid var(--c-line); border-radius: var(--radius); padding: 22px 16px 18px;
  text-align: center; background: var(--c-bg-soft); transition: box-shadow 0.2s;
}
.qr-item:hover { box-shadow: var(--shadow); }
.qr-item .qr-box {
  width: 168px; height: 168px; margin: 0 auto 14px; background: #fff;
  border-radius: 10px; padding: 10px; border: 1px solid var(--c-line);
}
.qr-item img { width: 100%; height: 100%; }
.qr-item .qr-title { font-weight: 600; font-size: 15px; }
.qr-item .qr-sub { font-size: 13px; color: var(--c-ink-3); margin-top: 2px; }
.modal-tips { padding: 6px 32px 30px; }
.modal-tips .tip-box {
  background: var(--c-bg-soft); border-radius: 10px; padding: 12px 16px;
  font-size: 13px; color: var(--c-ink-3); text-align: center;
}
.modal-tips .tip-box a { color: var(--c-ink-2); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-bg-soft); border-top: 1px solid var(--c-line); padding: 56px 0 32px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; color: var(--c-ink); margin-bottom: 12px; }
.footer-brand img { width: 26px; height: 26px; }
.site-footer p { color: var(--c-ink-3); }
.site-footer h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--c-ink-3); margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: var(--c-ink-2); }
.site-footer a:hover { color: var(--c-ink); }
.footer-bottom {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--c-line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; color: var(--c-ink-3); font-size: 13px;
}
.footer-bottom a { color: var(--c-ink-3); }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 14px; color: var(--c-ink-3); padding: 22px 0 0; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--c-line); }
.breadcrumb a { color: var(--c-ink-3); }
.breadcrumb [aria-current] { color: var(--c-ink); }

/* ---------- 页头（内页） ---------- */
.page-head { padding: 64px 0 8px; }
.page-head h1 { font-size: clamp(30px, 4vw, 42px); letter-spacing: -0.01em; }
.page-head .lead { font-size: 19px; color: var(--c-ink-3); margin-top: 12px; max-width: 720px; }

/* ---------- 提示框 ---------- */
.note {
  background: linear-gradient(180deg, rgba(47, 107, 255, 0.07), rgba(47, 107, 255, 0.04));
  border: 1px solid rgba(47, 107, 255, 0.22);
  border-radius: 12px; padding: 16px 20px; font-size: 15px; color: var(--c-ink-2);
}
.note.warn { background: rgba(232, 147, 12, 0.07); border-color: rgba(232, 147, 12, 0.32); }
.note p + p { margin-top: 8px; }

/* ---------- 时间线 ---------- */
.timeline { border-left: 2px solid var(--c-line); margin-left: 8px; padding-left: 28px; }
.timeline .t-item { position: relative; padding-bottom: 30px; }
.timeline .t-item::before {
  content: ""; position: absolute; left: -35px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: #fff; border: 3px solid var(--c-brand);
  box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.14);
}
.timeline .t-date { font-size: 13px; color: var(--c-ink-3); font-family: var(--font-mono); }
.timeline h3 { font-size: 17px; margin: 4px 0 6px; }
.timeline p { font-size: 14px; color: var(--c-ink-3); }

/* ---------- CTA 横幅（深色高端版） ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background:
    radial-gradient(560px 240px at 82% -20%, rgba(47, 107, 255, 0.28), transparent 62%),
    linear-gradient(165deg, #0d0d12 0%, #12121a 100%);
  border-radius: var(--radius-lg); padding: 60px 48px; text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.07);
}
.cta-band h2 {
  font-size: clamp(26px, 3.5vw, 34px);
  background: linear-gradient(180deg, #ffffff 30%, #c3c9db 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.cta-band p { color: #9a9aa6; margin: 12px 0 30px; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid { flex-direction: column-reverse; gap: 36px; }
  .hero-text, .hero-visual { flex: auto; }
  .feat-grid, .steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .scene-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .modal-qrs { grid-template-columns: 1fr; }
  .nav-links {
    position: absolute; top: 60px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    border-bottom: 1px solid var(--c-line); padding: 8px 24px 16px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-bottom: 1px solid var(--c-bg-mute); }
  .nav-links li:last-child { border-bottom: none; }
  .nav-links a { display: block; padding: 13px 0; }
  .nav-toggle { display: block; }
  .nav-links .nav-cta { display: inline-block; margin-top: 10px; text-align: center; }
}
@media (max-width: 560px) {
  .section { padding: 60px 0; }
  .hero { padding: 56px 0; }
  .cta-band { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .modal-head, .modal-qrs, .modal-tips { padding-left: 20px; padding-right: 20px; }
}

/* ---------- 动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}