/* 两个产品共用的 SaaS 视觉系统。组件统一用 sx- 前缀，避免和各产品自己的样式冲突。
   主题：在 <html data-theme="offer|fee"> 上切换强调色。 */

:root {
  --bg: #05060d;
  --bg-2: #0a0f1f;
  --surface: rgba(255, 255, 255, .035);
  --surface-2: rgba(255, 255, 255, .07);
  --line: rgba(255, 255, 255, .09);
  --line-2: rgba(255, 255, 255, .16);
  --text: #eef2ff;
  --text-2: #b4bdd6;
  --muted: #7c87a3;
  --a1: #5b8cff;
  --a2: #a855f7;
  --a3: #22d3ee;
  --glow: 91, 140, 255;
  --ok: #34d399;
  --warn: #fbbf24;
  --danger: #ff5577;
  --violet: #a78bfa;
  --radius: 20px;
  --radius-sm: 12px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}

[data-theme="fee"] {
  --a1: #19e6a7;
  --a2: #22d3ee;
  --a3: #ff4d6d;
  --glow: 25, 230, 167;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
::selection { background: rgba(var(--glow), .35); color: #fff; }
a { color: inherit; }
img, svg, canvas, video { max-width: 100%; }

.sx-wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .sx-wrap { padding: 0 28px; } }

/* ---------- 文字 ---------- */
.sx-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  margin: 0 0 14px; padding: 6px 12px 6px 10px;
  border: 1px solid var(--line-2); border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  color: var(--text-2); font-size: 13px; font-weight: 600; letter-spacing: .02em;
  backdrop-filter: blur(8px);
}
.sx-kicker::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--a1); box-shadow: 0 0 0 0 rgba(var(--glow), .7);
  animation: sx-pulse 2s infinite;
}
.sx-h1 {
  margin: 0 0 18px;
  font-size: clamp(36px, 8.4vw, 68px); line-height: 1.06; font-weight: 800; letter-spacing: -.025em;
}
.sx-h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 5.4vw, 46px); line-height: 1.12; font-weight: 800; letter-spacing: -.02em;
}
.sx-h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.35; font-weight: 700; }
.sx-lead { margin: 0 0 28px; color: var(--text-2); font-size: clamp(16px, 2.2vw, 19px); max-width: 640px; }
.sx-sub { margin: 0 auto; color: var(--text-2); font-size: 16px; max-width: 620px; }
.sx-grad {
  background: linear-gradient(100deg, var(--a1), var(--a2) 45%, var(--a3) 75%, var(--a1));
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: sx-shift 8s ease-in-out infinite;
}
/* 标题里的渐变短语整体换行，避免"完 / 整版"这种断法；放不下时仍会在内部折行 */
.sx-h2 .sx-grad { display: inline-block; }
.sx-mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.sx-muted { color: var(--muted); }

/* ---------- 导航 ---------- */
.sx-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(5, 6, 13, .62);
  backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.sx-nav-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px; }
.sx-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .01em; text-decoration: none; color: var(--text); }
.sx-logo {
  position: relative; width: 26px; height: 26px; border-radius: 50%;
  border: 1.5px solid rgba(var(--glow), .9);
  background: radial-gradient(circle, rgba(var(--glow), .9) 0 2.5px, transparent 3.5px), radial-gradient(circle, transparent 0 6px, rgba(var(--glow), .35) 6.5px 7.5px, transparent 8px);
  box-shadow: 0 0 18px rgba(var(--glow), .45);
  overflow: hidden;
}
.sx-logo::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(var(--glow), .85), transparent 28%);
  animation: sx-spin 2.6s linear infinite;
}
.sx-links { display: none; gap: 26px; font-size: 14px; color: var(--text-2); }
.sx-links a { text-decoration: none; transition: color .2s; }
.sx-links a:hover { color: var(--text); }
@media (min-width: 860px) { .sx-links { display: flex; } }

/* ---------- 按钮 ---------- */
.sx-btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 22px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(255, 255, 255, .05); color: var(--text);
  font: inherit; font-size: 15px; font-weight: 700; text-decoration: none; cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  -webkit-tap-highlight-color: transparent;
}
.sx-btn:hover { transform: translateY(-1px); border-color: rgba(255, 255, 255, .28); }
.sx-btn:active { transform: translateY(0) scale(.98); }
.sx-btn:disabled { opacity: .55; cursor: progress; transform: none; }
.sx-btn--primary {
  overflow: hidden; border: 0; color: #050812;
  background: linear-gradient(100deg, var(--a1), var(--a2) 60%, var(--a3));
  box-shadow: 0 10px 34px -8px rgba(var(--glow), .7), inset 0 1px 0 rgba(255, 255, 255, .35);
}
[data-theme="offer"] .sx-btn--primary { color: #fff; }
.sx-btn--primary::after {
  content: ""; position: absolute; top: 0; left: -60%; width: 45%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: skewX(-20deg); animation: sx-shine 3.6s ease-in-out infinite;
}
.sx-btn--primary:hover { box-shadow: 0 16px 44px -8px rgba(var(--glow), .9), inset 0 1px 0 rgba(255, 255, 255, .35); }
.sx-btn--lg { min-height: 56px; padding: 0 30px; font-size: 17px; }
.sx-btn--sm { min-height: 38px; padding: 0 16px; font-size: 14px; }
.sx-btn--block { display: flex; width: 100%; }
.sx-btn .sx-arrow { transition: transform .2s; }
.sx-btn:hover .sx-arrow { transform: translateX(3px); }
.sx-cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---------- 首屏背景 ---------- */
.sx-hero { position: relative; overflow: hidden; padding: 56px 0 72px; isolation: isolate; }
@media (min-width: 960px) { .sx-hero { padding: 96px 0 110px; } }
.sx-mesh { position: absolute; inset: -20% -10% auto; height: 120%; z-index: -2; pointer-events: none; }
.sx-mesh i {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: .38;
  animation: sx-drift 18s ease-in-out infinite alternate;
}
.sx-mesh i:nth-child(1) { width: 52vw; height: 52vw; max-width: 620px; max-height: 620px; left: -8%; top: 0; background: var(--a1); }
.sx-mesh i:nth-child(2) { width: 46vw; height: 46vw; max-width: 560px; max-height: 560px; right: -6%; top: 8%; background: var(--a2); animation-delay: -6s; }
.sx-mesh i:nth-child(3) { width: 38vw; height: 38vw; max-width: 460px; max-height: 460px; left: 35%; top: 42%; background: var(--a3); opacity: .2; animation-delay: -11s; }
.sx-gridbg {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 35%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 35%, #000 30%, transparent 78%);
}
.sx-hero-grid { display: grid; gap: 44px; align-items: center; }
@media (min-width: 960px) { .sx-hero-grid { grid-template-columns: 1.05fr .95fr; gap: 56px; } }
.sx-trust { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 26px 0 0; padding: 0; list-style: none; color: var(--text-2); font-size: 14px; }
.sx-trust li { display: inline-flex; align-items: center; gap: 7px; }
.sx-trust li::before {
  content: ""; width: 16px; height: 16px; border-radius: 50%; flex: none;
  background: rgba(var(--glow), .18) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%23fff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat;
  box-shadow: inset 0 0 0 1px rgba(var(--glow), .6);
}

/* ---------- 卡片 ---------- */
.sx-card {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
  border: 1px solid var(--line); border-radius: var(--radius);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .8);
}
.sx-card--pad { padding: 22px 18px; }
@media (min-width: 720px) { .sx-card--pad { padding: 30px; } }
.sx-card--glow::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(130deg, rgba(var(--glow), .9), transparent 35%, transparent 65%, var(--a2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.sx-card--glow::after {
  content: ""; position: absolute; inset: 12% 8% auto; height: 60%; z-index: -1; border-radius: 50%;
  background: rgba(var(--glow), .22); filter: blur(60px); pointer-events: none;
}
.sx-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: 14px;
  background: rgba(12, 16, 32, .78); border: 1px solid var(--line-2);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 14px 40px -16px rgba(0, 0, 0, .9);
  font-size: 13px; color: var(--text-2); white-space: nowrap;
}
.sx-chip b { color: var(--text); font-size: 18px; font-family: var(--mono); }
.sx-float { animation: sx-float 6s ease-in-out infinite; }
.sx-float--2 { animation-delay: -2s; }
.sx-float--3 { animation-delay: -4s; }

/* ---------- 雷达 ---------- */
.sx-radar-wrap { position: relative; width: min(100%, 520px); margin: 0 auto; aspect-ratio: 1; }
.sx-radar-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.sx-radar-wrap .sx-chip { position: absolute; z-index: 2; }
.sx-radar-ring {
  position: absolute; inset: 0; border-radius: 50%; pointer-events: none;
  box-shadow: 0 0 0 1px rgba(var(--glow), .25), 0 0 120px -20px rgba(var(--glow), .55), inset 0 0 80px -30px rgba(var(--glow), .6);
}

/* ---------- 分区 ---------- */
.sx-section { position: relative; padding: 72px 0; }
@media (min-width: 960px) { .sx-section { padding: 112px 0; } }
.sx-section-head { text-align: center; margin: 0 auto 42px; max-width: 760px; }
.sx-section-head .sx-kicker { margin-bottom: 18px; }
.sx-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }

/* 数据条 */
.sx-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (min-width: 860px) { .sx-stats { grid-template-columns: repeat(4, 1fr); gap: 16px; } }
.sx-stat { padding: 22px 18px; text-align: left; }
.sx-stat-num { display: block; font-size: clamp(34px, 6vw, 52px); font-weight: 800; line-height: 1; letter-spacing: -.03em; font-family: var(--mono); }
.sx-stat-label { display: block; margin-top: 10px; color: var(--text-2); font-size: 14px; line-height: 1.5; }

/* 走马灯 */
.sx-marquee { position: relative; overflow: hidden; padding: 18px 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.sx-marquee-track { display: flex; gap: 12px; width: max-content; animation: sx-marquee 46s linear infinite; }
.sx-marquee:hover .sx-marquee-track { animation-play-state: paused; }
.sx-marquee-item { padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 255, 255, .03); color: var(--text-2); font-size: 14px; white-space: nowrap; }
.sx-marquee-item b { color: var(--text); font-weight: 700; }

/* 卖点格 */
.sx-features { display: grid; gap: 14px; }
@media (min-width: 760px) { .sx-features { grid-template-columns: repeat(3, 1fr); gap: 18px; } }
.sx-feature { padding: 24px 20px; transition: transform .3s, border-color .3s; }
.sx-feature:hover { transform: translateY(-4px); border-color: rgba(var(--glow), .45); }
.sx-icon {
  display: grid; place-items: center; width: 46px; height: 46px; margin-bottom: 16px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(var(--glow), .28), rgba(255, 255, 255, .04));
  box-shadow: inset 0 0 0 1px rgba(var(--glow), .45), 0 10px 30px -12px rgba(var(--glow), .8);
  font-size: 22px;
}
.sx-feature p { margin: 0; color: var(--text-2); font-size: 15px; }

/* 步骤 */
.sx-steps { display: grid; gap: 14px; counter-reset: step; }
@media (min-width: 860px) { .sx-steps { grid-template-columns: repeat(3, 1fr); gap: 18px; } }
.sx-step { padding: 24px 20px; }
.sx-step-n {
  display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 14px; border-radius: 50%;
  background: linear-gradient(135deg, var(--a1), var(--a2)); color: #fff; font-weight: 800; font-family: var(--mono);
  box-shadow: 0 0 24px rgba(var(--glow), .6);
}
.sx-step p { margin: 0; color: var(--text-2); font-size: 15px; }

/* 价格 */
.sx-pricing { display: grid; gap: 16px; align-items: start; }
@media (min-width: 900px) { .sx-pricing { grid-template-columns: .85fr 1.15fr; gap: 22px; } }
.sx-plan { padding: 26px 20px; }
@media (min-width: 720px) { .sx-plan { padding: 32px; } }
.sx-plan-name { margin: 0 0 6px; color: var(--text-2); font-size: 14px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.sx-plan-price { display: flex; align-items: baseline; gap: 8px; margin: 0 0 6px; }
.sx-plan-price b { font-size: clamp(44px, 9vw, 64px); line-height: 1; font-weight: 800; letter-spacing: -.03em; }
.sx-plan-price span { color: var(--text-2); font-size: 15px; }
.sx-badge {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  background: linear-gradient(100deg, var(--a1), var(--a2)); color: #fff; font-size: 12px; font-weight: 800; letter-spacing: .03em;
  box-shadow: 0 6px 20px -6px rgba(var(--glow), .9);
}
.sx-checks { margin: 18px 0 22px; padding: 0; list-style: none; }
.sx-checks li { position: relative; padding: 0 0 12px 30px; color: var(--text-2); font-size: 15px; }
.sx-checks li b { color: var(--text); }
.sx-checks li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%;
  background: rgba(var(--glow), .2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%23fff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat;
  box-shadow: inset 0 0 0 1px rgba(var(--glow), .7);
}
.sx-checks--dim li::before { background-color: rgba(255, 255, 255, .06); box-shadow: inset 0 0 0 1px var(--line-2); }

/* 表单 */
.sx-field { display: block; margin: 0 0 16px; padding: 0; border: 0; min-width: 0; }
.sx-field > span, .sx-field > legend { display: block; margin-bottom: 8px; padding: 0; color: var(--text-2); font-size: 14px; font-weight: 600; }
.sx-field small { display: block; margin-top: 6px; color: var(--muted); font-size: 12.5px; }
.sx-input, .sx-field input, .sx-field select, .sx-field textarea {
  width: 100%; padding: 13px 14px; border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, .045); color: var(--text); border: 1px solid var(--line-2);
  font: inherit; font-size: 16px; outline: none; appearance: none; -webkit-appearance: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.sx-field select {
  background-image: linear-gradient(45deg, transparent 50%, var(--text-2) 50%), linear-gradient(135deg, var(--text-2) 50%, transparent 50%);
  background-position: calc(100% - 19px) 52%, calc(100% - 14px) 52%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 36px;
}
.sx-field select option { background: #10162b; color: var(--text); }
.sx-input:focus, .sx-field input:focus, .sx-field select:focus, .sx-field textarea:focus {
  border-color: rgba(var(--glow), .85); background: rgba(255, 255, 255, .06); box-shadow: 0 0 0 4px rgba(var(--glow), .16);
}
.sx-field input::placeholder, .sx-field textarea::placeholder { color: #5d6782; }
.sx-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sx-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sx-chips label { position: relative; }
.sx-chips input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.sx-chips span {
  display: inline-block; padding: 9px 16px; border-radius: 999px; cursor: pointer; user-select: none;
  border: 1px solid var(--line-2); background: rgba(255, 255, 255, .04); color: var(--text-2); font-size: 14px; font-weight: 600;
  transition: all .2s;
}
.sx-chips input:checked + span { color: #fff; border-color: rgba(var(--glow), .9); background: rgba(var(--glow), .2); box-shadow: 0 0 20px -6px rgba(var(--glow), .9); }
.sx-chips input:focus-visible + span { box-shadow: 0 0 0 4px rgba(var(--glow), .25); }
.sx-check { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 16px; color: var(--text-2); font-size: 14px; }
.sx-check input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--a1); }
.sx-error { margin: 0 0 12px; color: #ff8fa3; font-size: 14px; }
.sx-fine { margin: 12px 0 0; color: var(--muted); font-size: 12.5px; }

/* 常见问题 */
.sx-faq { max-width: 820px; margin: 0 auto; }
.sx-faq details { border-bottom: 1px solid var(--line); }
.sx-faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 2px; cursor: pointer; list-style: none; font-size: 17px; font-weight: 700;
}
.sx-faq summary::-webkit-details-marker { display: none; }
.sx-faq summary::after {
  content: ""; flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: rgba(255, 255, 255, .06) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 3.5v9M3.5 8h9' stroke='%23b4bdd6' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") center/14px no-repeat;
  transition: transform .25s, background-color .25s;
}
.sx-faq details[open] summary::after { transform: rotate(45deg); background-color: rgba(var(--glow), .3); }
.sx-faq details p { margin: 0 0 20px; color: var(--text-2); font-size: 15.5px; }

/* 收尾号召 */
.sx-cta {
  position: relative; overflow: hidden; padding: 52px 22px; border-radius: 28px; text-align: center; isolation: isolate;
  background: radial-gradient(120% 140% at 50% 0%, rgba(var(--glow), .35), transparent 60%), linear-gradient(180deg, #0d1430, #070a18);
  border: 1px solid rgba(var(--glow), .35);
}
.sx-cta::before {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .6;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000, transparent 70%); mask-image: radial-gradient(circle at 50% 30%, #000, transparent 70%);
}
@media (min-width: 720px) { .sx-cta { padding: 72px 40px; } }

/* 页脚 */
.sx-foot { padding: 36px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.sx-foot p { margin: 4px 0; }

/* 设备外框（产品演示动画用） */
.sx-window { overflow: hidden; border-radius: 18px; border: 1px solid var(--line-2); background: #0b1022; box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .95), 0 0 0 1px rgba(255, 255, 255, .03); }
.sx-window-bar { display: flex; align-items: center; gap: 7px; height: 38px; padding: 0 14px; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .03); }
.sx-window-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.sx-window-bar i:nth-child(2) { background: #febc2e; }
.sx-window-bar i:nth-child(3) { background: #28c840; }
.sx-window-bar span { margin-left: 10px; color: var(--muted); font-size: 12px; font-family: var(--mono); }
.sx-phone {
  position: relative; width: min(290px, 78vw); aspect-ratio: 9 / 18.5; margin: 0 auto; padding: 11px;
  border-radius: 44px; background: linear-gradient(160deg, #2a3150, #0c1022 40%, #1a2040);
  box-shadow: 0 50px 100px -40px rgba(0, 0, 0, .95), inset 0 0 0 1.5px rgba(255, 255, 255, .14), 0 0 80px -30px rgba(var(--glow), .7);
}
.sx-phone::before { content: ""; position: absolute; top: 18px; left: 50%; width: 84px; height: 24px; transform: translateX(-50%); border-radius: 14px; background: #000; z-index: 3; }
.sx-phone-screen { position: relative; height: 100%; overflow: hidden; border-radius: 34px; background: #f4f5f9; color: #111; }

/* 滚动入场 */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
[data-reveal].is-in { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---------- 动画 ---------- */
@keyframes sx-pulse { 0% { box-shadow: 0 0 0 0 rgba(var(--glow), .7); } 70% { box-shadow: 0 0 0 9px rgba(var(--glow), 0); } 100% { box-shadow: 0 0 0 0 rgba(var(--glow), 0); } }
@keyframes sx-spin { to { transform: rotate(360deg); } }
@keyframes sx-shift { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
@keyframes sx-shine { 0%, 55% { left: -60%; } 85%, 100% { left: 130%; } }
@keyframes sx-drift { 0% { transform: translate3d(0, 0, 0) scale(1); } 50% { transform: translate3d(6%, 8%, 0) scale(1.08); } 100% { transform: translate3d(-5%, 3%, 0) scale(.96); } }
@keyframes sx-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes sx-marquee { to { transform: translateX(-50%); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}