/* Sceneo 官网设计系统 · 暗色 + 琥珀 */
:root {
  --bg: #0D0D0F;
  --bg-1: #141417;
  --bg-2: #1B1B1F;
  --line: #2A2A30;
  --line-soft: #202025;
  --fg: #F2F2F0;
  --mut: #9C9CA3;
  --mut-2: #6E6E76;
  --amber: #FFB020;
  --amber-dim: rgba(255, 176, 32, .14);
  --amber-line: rgba(255, 176, 32, .35);
  --green: #4ADE80;
  --red: #F87171;
  --radius: 14px;
  --radius-s: 9px;
  --font: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --maxw: 1120px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--fg);
  font: 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,13,15,.86); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-in { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 18px; letter-spacing: .2px; }
.brand svg { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 4px; margin-left: 8px; }
.nav-links a, .nav-links button {
  padding: 7px 13px; border-radius: 999px; font-size: 14.5px; color: var(--mut);
  transition: color .15s, background .15s;
}
.nav-links a:hover, .nav-links button:hover { color: var(--fg); }
.nav-links a.on { color: var(--amber); background: var(--amber-dim); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.lang-btn {
  display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px;
  font-size: 13.5px; color: var(--fg);
}
.lang-btn svg { width: 15px; height: 15px; opacity: .8; }
.lang-menu {
  position: absolute; top: 56px; right: 24px; min-width: 150px;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-s);
  padding: 6px; display: none; box-shadow: 0 12px 32px rgba(0,0,0,.5);
}
.lang-menu.open { display: block; }
.lang-menu button { display: block; width: 100%; text-align: left; padding: 9px 12px; border-radius: 6px; font-size: 14px; }
.lang-menu button:hover { background: var(--bg-1); }
.lang-menu button.on { color: var(--amber); }
.btn-ghost {
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px; font-size: 14px;
  transition: border-color .15s, color .15s;
}
.btn-ghost:hover { border-color: var(--mut); }
.btn-amber {
  background: var(--amber); color: #14100A; font-weight: 600;
  border-radius: 999px; padding: 9px 20px; font-size: 14px;
  transition: filter .15s;
}
.btn-amber:hover { filter: brightness(1.08); }
.btn-amber.lg, .btn-ghost.lg { padding: 13px 28px; font-size: 15.5px; }
.menu-toggle { display: none; padding: 8px; }

/* ---------- 面包屑 ---------- */
.crumb { display: flex; gap: 8px; align-items: center; color: var(--mut); font-size: 13.5px; padding: 22px 0 0; }
.crumb a:hover { color: var(--fg); }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 72px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.kicker { color: var(--amber); font-size: 14px; font-weight: 600; letter-spacing: .4px; display: flex; align-items: center; gap: 8px; }
.kicker::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.hero h1 { font-size: clamp(38px, 5.2vw, 60px); line-height: 1.18; font-weight: 800; margin: 18px 0 20px; letter-spacing: .5px; }
.hero p.lead { color: var(--mut); font-size: 17px; max-width: 30em; }
.hero-cta { display: flex; gap: 14px; margin: 32px 0 16px; flex-wrap: wrap; }
.hero-note { color: var(--mut-2); font-size: 13px; }
.phone-shot {
  aspect-ratio: 4/5; border: 1.5px dashed var(--line); border-radius: 22px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  color: var(--mut-2); font-size: 14px; background: var(--bg-1);
}
.phone-shot svg { width: 44px; height: 44px; opacity: .5; }

/* ---------- 区块通用 ---------- */
.section { padding: 72px 0; border-top: 1px solid var(--line-soft); }
.section h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; letter-spacing: .3px; }
.section .sub { color: var(--mut); margin-top: 12px; max-width: 34em; }
.num-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 40px; }
.num-grid.c4 { grid-template-columns: repeat(4, 1fr); }
.num-card { border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 22px 20px; background: var(--bg-1); }
.num-card .no { color: var(--amber); font-size: 13px; font-weight: 700; letter-spacing: 1px; }
.num-card .t { font-size: 17px; font-weight: 700; margin: 10px 0 8px; }
.num-card .d { color: var(--mut); font-size: 13.5px; line-height: 1.6; }

/* ---------- 方法卡 ---------- */
.method-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.method-grid.c3 { grid-template-columns: repeat(3, 1fr); }
.method-card {
  text-align: left; border: 1px solid var(--line-soft); border-radius: var(--radius);
  overflow: hidden; background: var(--bg-1); transition: border-color .15s, transform .15s;
  display: flex; flex-direction: column;
}
.method-card:hover { border-color: var(--amber-line); transform: translateY(-2px); }
.method-card .thumb {
  aspect-ratio: 4/5; background: var(--bg-2); display: flex; align-items: center; justify-content: center;
  color: var(--mut-2); font-size: 13px; position: relative;
}
.method-card .thumb svg { width: 30px; height: 30px; opacity: .45; margin-bottom: 4px; }
.method-card .badge {
  position: absolute; top: 10px; left: 10px; background: var(--amber); color: #14100A;
  font-size: 11.5px; font-weight: 700; padding: 3px 9px; border-radius: 6px;
}
.method-card .meta { padding: 14px 16px 16px; }
.method-card .mt { font-size: 14.5px; font-weight: 600; line-height: 1.5; }
.method-card .mm { display: flex; justify-content: space-between; margin-top: 10px; font-size: 12.5px; color: var(--mut); }
.method-card .mm b { color: var(--amber); font-weight: 600; }

/* ---------- 达人计划 ---------- */
.plan-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 44px; }
.plan-card { border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 28px 24px; background: var(--bg-1); }
.plan-card .pct { font-size: 34px; font-weight: 800; color: var(--amber); letter-spacing: .5px; }
.plan-card .pt { font-size: 17px; font-weight: 700; margin: 12px 0 8px; }
.plan-card .pd { color: var(--mut); font-size: 13.5px; }
.plan-card .pb { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--mut-2); }
.plan-card .pb b { color: var(--mut); font-weight: 600; }
.info-rows { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 16px; }
.info-row { border: 1px dashed var(--line); border-radius: var(--radius); padding: 20px; }
.info-row .t { font-weight: 700; font-size: 15px; margin-bottom: 8px; }
.info-row .d { color: var(--mut); font-size: 13.5px; }
.tag-amber { display: inline-block; background: var(--amber-dim); border: 1px solid var(--amber-line); color: var(--amber); border-radius: 8px; padding: 8px 14px; font-size: 13px; margin-top: 22px; }

/* ---------- 分组头（方法页） ---------- */
.cluster { margin-top: 56px; }
.cluster-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line-soft); padding-bottom: 16px; }
.cluster-head h2 { font-size: 24px; }
.cluster-head .cd { color: var(--mut); font-size: 13.5px; margin-top: 6px; }
.cluster-stats { display: flex; gap: 28px; text-align: right; }
.cluster-stats .v { font-size: 24px; font-weight: 800; }
.cluster-stats .v.amber { color: var(--amber); }
.cluster-stats .k { font-size: 12px; color: var(--mut-2); }
.rate-def { margin-top: 48px; color: var(--mut-2); font-size: 12.5px; border-top: 1px solid var(--line-soft); padding-top: 18px; }

/* ---------- 关于/条款 ---------- */
.prose { max-width: 46em; }
.prose p { color: var(--mut); margin-top: 16px; }
.contact-rows { margin-top: 36px; display: grid; gap: 2px; border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; }
.contact-row { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; background: var(--bg-1); }
.contact-row + .contact-row { border-top: 1px solid var(--line-soft); }
.contact-row .k { color: var(--mut); font-size: 14px; }
.contact-row a { color: var(--amber); font-size: 14.5px; }
.legal-list { margin-top: 24px; display: grid; gap: 2px; border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; }
.legal-item { display: flex; justify-content: space-between; padding: 16px 20px; background: var(--bg-1); font-size: 14.5px; }
.legal-item + .legal-item { border-top: 1px solid var(--line-soft); }
.legal-item .soon { color: var(--mut-2); font-size: 13px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line-soft); padding: 56px 0 40px; margin-top: 40px; }
.footer-grid { display: grid: ; }
.footer-cols { display: flex; gap: 72px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 9px; font-weight: 700; }
.footer-brand svg { width: 24px; height: 24px; }
.footer-tag { color: var(--mut-2); font-size: 13px; margin-top: 10px; }
.footer-col .h { font-size: 13px; color: var(--mut-2); margin-bottom: 12px; letter-spacing: .5px; }
.footer-col a, .footer-col button { display: block; color: var(--mut); font-size: 14px; padding: 5px 0; text-align: left; }
.footer-col a:hover, .footer-col button:hover { color: var(--fg); }
.footer-langs { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 36px; align-items: center; }
.footer-langs svg { width: 16px; height: 16px; color: var(--mut-2); }
.footer-langs button { font-size: 13px; color: var(--mut); padding: 4px 8px; border-radius: 6px; }
.footer-langs button.on { color: var(--amber); }
.footer-copy { color: var(--mut-2); font-size: 12.5px; margin-top: 28px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer-copy button { color: var(--mut-2); font-size: 12.5px; }
.footer-copy button:hover { color: var(--mut); }

/* ---------- 表单（登录/下载） ---------- */
.form-card { max-width: 420px; margin: 48px auto 0; border: 1px solid var(--line-soft); border-radius: 18px; background: var(--bg-1); padding: 32px; }
.tabs { display: flex; background: var(--bg-2); border-radius: 10px; padding: 4px; margin-bottom: 26px; }
.tabs button { flex: 1; padding: 9px; border-radius: 7px; font-size: 14px; color: var(--mut); }
.tabs button.on { background: var(--bg-1); color: var(--fg); font-weight: 600; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--mut); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; color: var(--fg); font: inherit; font-size: 14.5px; outline: none;
  transition: border-color .15s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--amber-line); }
.form-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; font-size: 13px; color: var(--mut); }
.form-foot a, .form-foot button { color: var(--mut); font-size: 13px; }
.form-foot a:hover, .form-foot button:hover { color: var(--fg); }
.form-note { text-align: center; color: var(--mut-2); font-size: 12.5px; margin-top: 18px; }
.w-full { width: 100%; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(20px);
  background: var(--bg-2); border: 1px solid var(--amber-line); color: var(--fg);
  padding: 12px 22px; border-radius: 12px; font-size: 14px; opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .25s; z-index: 300; box-shadow: 0 12px 40px rgba(0,0,0,.5);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .num-grid, .num-grid.c4 { grid-template-columns: repeat(2, 1fr); }
  .method-grid, .method-grid.c3 { grid-template-columns: repeat(2, 1fr); }
  .plan-cards, .info-rows { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; gap: 36px; padding: 56px 0; }
  .phone-shot { max-width: 420px; }
}
.m-only { display: none !important; }
@media (max-width: 768px) {
  .nav-links { display: none; }
  /* 手机端：语言按钮只留图标，下载按钮收进汉堡菜单 */
  .lang-btn { padding: 7px 10px; }
  .lang-btn [data-lang-name] { display: none; }
  .nav-right .btn-amber { display: none; }
  .nav-links.mobile-open .m-only { display: block !important; }
  .nav-links.mobile-open a.m-only.btn-amber-m { color: var(--amber); font-weight: 600; }
  .nav-links.mobile-open {
    display: flex; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: var(--bg-1); border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px; gap: 2px;
  }
  .nav-links.mobile-open a { padding: 12px 10px; font-size: 15px; }
  .menu-toggle { display: block; }
  .nav-right .btn-ghost.hide-m { display: none; }
  .cluster-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .cluster-stats { text-align: left; }
  .footer-cols { gap: 36px; }
  .form-card { margin: 32px 16px 0; padding: 24px; }
}
@media (max-width: 480px) {
  .num-grid, .num-grid.c4, .method-grid, .method-grid.c3 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  .wrap { padding: 0 18px; }
}

/* RTL（阿拉伯语） */
html[dir="rtl"] .nav-links { margin-left: 0; margin-right: 8px; }
html[dir="rtl"] .nav-right { margin-left: 0; margin-right: auto; }
html[dir="rtl"] .kicker { flex-direction: row-reverse; }