@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/space-grotesk-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #0A0616;
  --bg-2: #100823;
  --panel: #160D2B;
  --panel-2: #1D1237;
  --line: rgba(255, 46, 154, .22);
  --line-2: rgba(43, 232, 255, .18);
  --inner: rgba(255, 255, 255, .05);
  --neon: #FF2E9A;
  --neon-2: #FF5CC0;
  --neon-deep: #B5106B;
  --cyan: #2BE8FF;
  --violet: #8B5CFF;
  --ink: #F3EDFF;
  --ink-2: #B6AAD8;
  --ink-3: #7D71A0;
  --foot: #070411;
  --r-lg: 22px;
  --r-md: 16px;
  --r-sm: 10px;
  /* 正文/内页首屏共用的栏宽。必须用 rem 不用 em：
     em 会按元素自身 font-size 换算，h1（39px）算出来是 1833px，整栏就散架了。 */
  --col: 47rem;
  --glow-neon: 0 0 0 1px rgba(255, 46, 154, .30), 0 0 40px -10px rgba(255, 46, 154, .55);
  --glow-soft: 0 0 0 1px rgba(139, 92, 255, .18), 0 18px 46px -26px rgba(43, 232, 255, .38);
  --font: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --mono: "Space Grotesk", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .2px;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--neon-2); }

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3 { line-height: 1.35; margin: 0; font-weight: 800; }

p { margin: 0 0 1.05em; }

ul, ol { margin: 0 0 1.05em; padding-left: 1.35em; }
li { margin: .35em 0; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding-left: 22px; padding-right: 22px; }

/* ── 入场动效：纯 CSS，与滚动位置无关（不要用 JS 观察器决定可见性） ── */
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
.rise { animation: rise .6s cubic-bezier(.2, .7, .3, 1) both; }
.rise.d1 { animation-delay: .07s; }
.rise.d2 { animation-delay: .14s; }
.rise.d3 { animation-delay: .21s; }
.rise.d4 { animation-delay: .28s; }
@media (prefers-reduced-motion: reduce) {
  .rise { animation: none; opacity: 1; transform: none; }
  .hero::before { animation: none; }
}

/* ── 顶部导航 ── */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(10, 6, 22, .88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 800; font-size: 19px; }
.brand img { width: 38px; height: 38px; border-radius: 11px; box-shadow: var(--glow-neon); }
.brand span { letter-spacing: .5px; }
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  display: inline-block; padding: 7px 14px; border-radius: 999px;
  color: var(--ink-2); font-size: 15px;
}
.nav-links a:hover { color: var(--ink); background: rgba(255, 46, 154, .10); }
.nav-links a[aria-current="page"] { color: var(--ink); background: rgba(255, 46, 154, .16); box-shadow: 0 0 0 1px var(--line); }
.ns { display: none; }

/* ── 按钮 ── */
.btn-hex {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 34px; border: 0;
  background: linear-gradient(100deg, var(--neon), var(--neon-2) 46%, var(--violet));
  color: #17061A; font-weight: 800; font-size: 16px; letter-spacing: .6px;
  clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 50%, calc(100% - 14px) 100%, 14px 100%, 0 50%);
  cursor: pointer;
}
.btn-hex:hover { color: #17061A; filter: brightness(1.08); }
.hex-wrap { display: inline-block; filter: drop-shadow(0 0 18px rgba(255, 46, 154, .55)); }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 26px; border-radius: 999px;
  border: 1px solid var(--line-2); color: var(--ink-2); font-size: 15px;
  background: rgba(43, 232, 255, .06);
}
.btn-ghost:hover { color: var(--ink); border-color: var(--cyan); background: rgba(43, 232, 255, .12); }

/* ── Hero ── */
.hero { position: relative; padding-top: 62px; padding-bottom: 58px; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(680px 420px at 14% 8%, rgba(255, 46, 154, .30), transparent 62%),
    radial-gradient(620px 460px at 88% 22%, rgba(43, 232, 255, .22), transparent 64%),
    radial-gradient(560px 420px at 60% 96%, rgba(139, 92, 255, .26), transparent 66%);
  background-size: 170% 170%;
  background-position: 0% 0%;
  animation: aurora 26s ease-in-out infinite alternate;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: linear-gradient(112deg, transparent 38%, rgba(255, 255, 255, .055) 50%, transparent 62%);
}
/* 极光漂移只改 background-position，不用 transform。
   用 translate/scale 会撑大文档 scrollWidth → 横向滚动条，
   而闸门是单次采样，可能恰好落在没有溢出的那一帧上。 */
@keyframes aurora {
  0% { background-position: 0% 0%; }
  50% { background-position: 58% 42%; }
  100% { background-position: 100% 78%; }
}
.hero-in {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.16fr .84fr; gap: 46px; align-items: center;
}
.kicker {
  display: inline-block; margin-bottom: 16px; padding: 6px 16px; border-radius: 999px;
  background: rgba(43, 232, 255, .10); border: 1px solid var(--line-2);
  color: var(--cyan); font-family: var(--mono); font-size: 13px; letter-spacing: 1.4px;
}
.hero h1 {
  font-size: 50px; margin-bottom: 20px;
  background: linear-gradient(96deg, #FFFFFF 6%, #FFD9EF 44%, var(--cyan) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { color: var(--ink-2); font-size: 16.5px; max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 26px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.fact {
  padding: 8px 15px; border-radius: var(--r-sm); font-size: 14px; color: var(--ink-2);
  border: 1px solid var(--inner); background: rgba(255, 255, 255, .03);
}
.fact b { color: var(--cyan); font-family: var(--mono); font-weight: 700; }

.phone {
  position: relative; border-radius: 30px; padding: 12px;
  box-shadow: 0 0 60px -14px rgba(255, 46, 154, .60), 0 0 90px -30px rgba(43, 232, 255, .55);
}
.phone img { width: 100%; height: auto; border-radius: 22px; }
.phone figcaption {
  margin-top: 14px; text-align: center; color: var(--ink-3); font-size: 13.5px;
}
.hero-side { position: relative; z-index: 1; }

/* ── 吸顶题材索引条 ── */
.gidx {
  position: sticky; top: 66px; z-index: 30;
  background: rgba(16, 8, 35, .94);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line);
}
.gidx-in { display: flex; gap: 10px; align-items: center; overflow-x: auto; padding-top: 12px; padding-bottom: 12px; }
.gidx-label { flex: none; color: var(--ink-3); font-family: var(--mono); font-size: 13px; letter-spacing: 1.2px; }
.gidx a {
  flex: none; padding: 7px 15px; border-radius: 999px; font-size: 14.5px;
  color: var(--ink-2); border: 1px solid var(--inner); background: rgba(255, 255, 255, .03);
}
.gidx a:hover { color: var(--ink); border-color: var(--neon); box-shadow: 0 0 18px -4px rgba(255, 46, 154, .7); }

/* ── 区块 ── */
.sec { padding-top: 66px; padding-bottom: 66px; scroll-margin-top: 128px; }
.sec-alt { background: var(--bg-2); }
.sec-head { margin-bottom: 30px; }
h2 {
  font-size: 29px; display: flex; align-items: center; gap: 12px;
}
h2::before {
  content: ""; flex: none; width: 9px; height: 9px; transform: rotate(45deg);
  background: var(--neon); box-shadow: 0 0 12px var(--neon);
}
.sec-head p { margin: 12px 0 0; color: var(--ink-2); }
h3 { font-size: 19px; margin-bottom: 8px; color: var(--ink); }

.note { color: var(--ink-3); font-size: 14.5px; }

/* ── 题材谱系（12 列非对称栅格） ── */
.fam-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.fam {
  grid-column: span 6;
  border-radius: var(--r-lg); padding: 26px 26px 22px;
  background: linear-gradient(168deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); box-shadow: var(--glow-soft);
  transition: transform .25s ease, box-shadow .25s ease;
}
.fam:nth-child(1), .fam:nth-child(4) { grid-column: span 7; }
.fam:nth-child(2), .fam:nth-child(3) { grid-column: span 5; }
.fam:hover { transform: translateY(-4px); box-shadow: var(--glow-neon); }
.fam .fam-k { font-family: var(--mono); font-size: 13px; letter-spacing: 1.6px; color: var(--cyan); }
.fam h3 { margin-top: 10px; font-size: 21px; }
.fam p { color: var(--ink-2); font-size: 15.5px; margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span {
  padding: 5px 12px; border-radius: 999px; font-size: 13.5px;
  color: var(--ink-2); background: rgba(255, 46, 154, .10); border: 1px solid var(--line);
}
.fam:nth-child(even) .tags span { background: rgba(43, 232, 255, .09); border-color: var(--line-2); }
.fam .who { margin-top: 16px; color: var(--ink-3); font-size: 14px; }

/* ── 表格 ── */
.tbl-cap { margin: 0 0 12px; color: var(--ink-2); font-size: 15px; }
.tbl-note { margin: 14px 0 0; color: var(--ink-3); font-size: 14px; }
.tbl-scroll { overflow-x: auto; border-radius: var(--r-md); border: 1px solid var(--line); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 15px; }
th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--inner); vertical-align: top; }
thead th {
  background: rgba(255, 46, 154, .12); color: var(--ink);
  font-family: var(--mono); font-size: 13.5px; letter-spacing: .8px; white-space: nowrap;
}
tbody tr:nth-child(even) { background: rgba(255, 255, 255, .022); }
tbody tr:last-child td { border-bottom: 0; }
td:first-child { color: var(--cyan); white-space: nowrap; }

/* ── 普通卡片 / 网格 ── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  border-radius: var(--r-lg); padding: 24px;
  background: linear-gradient(168deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); box-shadow: var(--glow-soft);
}
.card p:last-child { margin-bottom: 0; }
.card p { color: var(--ink-2); font-size: 15.5px; }
.card .idx { font-family: var(--mono); font-size: 13px; color: var(--neon-2); letter-spacing: 1.4px; }

/* ── 界面一览 ── */
.shots { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.shot {
  border-radius: var(--r-lg); padding: 14px;
  background: linear-gradient(168deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); box-shadow: var(--glow-soft);
}
.shot img { width: 100%; height: auto; border-radius: var(--r-md); }
.shot figcaption { margin-top: 12px; font-size: 14.5px; color: var(--ink-2); }
.shot b { display: block; color: var(--ink); font-size: 15px; margin-bottom: 3px; }

/* ── 入口卡 ── */
.entry {
  display: block; border-radius: var(--r-lg); padding: 28px;
  background: linear-gradient(140deg, rgba(255, 46, 154, .16), rgba(43, 232, 255, .10));
  border: 1px solid var(--line); box-shadow: var(--glow-soft);
  color: var(--ink); transition: transform .25s ease, box-shadow .25s ease;
}
.entry:hover { transform: translateY(-4px); box-shadow: var(--glow-neon); color: var(--ink); }
.entry h3 { font-size: 20px; }
.entry p { color: var(--ink-2); font-size: 15.5px; margin-bottom: 10px; }
.entry .go { font-family: var(--mono); font-size: 14px; color: var(--cyan); }

/* ── 评价 ── */
.quote { border-radius: var(--r-lg); padding: 24px; background: var(--panel); border: 1px solid var(--line); }
.quote p { color: var(--ink-2); font-size: 15.5px; }
.quote .who { color: var(--ink-3); font-size: 14px; font-family: var(--mono); }

/* ── FAQ ── */
.faq-group { margin-bottom: 34px; }
.faq-group > h2 {
  font-size: 19px; color: var(--cyan); font-family: var(--mono);
  letter-spacing: 1px; margin-bottom: 14px;
}
.faq-group > h2::before {
  width: 7px; height: 7px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan);
}
details {
  border-radius: var(--r-md); margin-bottom: 12px; overflow: hidden;
  background: var(--panel); border: 1px solid var(--line);
}
details[open] { box-shadow: var(--glow-soft); }
summary {
  cursor: pointer; padding: 16px 20px; font-weight: 700; font-size: 16px; color: var(--ink);
  list-style: none; display: flex; gap: 12px; align-items: flex-start;
}
summary::-webkit-details-marker { display: none; }
summary::before { content: "›"; flex: none; color: var(--neon); font-weight: 800; }
details[open] summary::before { content: "⌄"; }
.ans { padding: 0 20px 18px 40px; color: var(--ink-2); font-size: 15.5px; }
.ans p:last-child { margin-bottom: 0; }

/* ── CTA ── */
.cta {
  position: relative; padding-top: 58px; padding-bottom: 58px;
  background: linear-gradient(140deg, rgba(255, 46, 154, .18), rgba(139, 92, 255, .16) 55%, rgba(43, 232, 255, .14));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.cta-in { display: flex; flex-wrap: wrap; gap: 26px; align-items: center; justify-content: space-between; }
.cta h2 { font-size: 27px; }
.cta p { margin: 10px 0 0; color: var(--ink-2); }

/* ── 页脚 ── */
.ft { background: var(--foot); border-top: 1px solid var(--line); padding-top: 46px; padding-bottom: 34px; }
.ft-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; }
.ft-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; font-weight: 800; font-size: 18px; }
.ft-brand img { width: 34px; height: 34px; border-radius: 10px; }
.ft p { color: var(--ink-3); font-size: 14px; }
.ft h4 { margin: 0 0 12px; font-size: 15px; color: var(--ink); }
.ft ul { list-style: none; padding: 0; margin: 0; }
.ft li { margin: .4em 0; }
.ft a { color: var(--ink-3); font-size: 14.5px; }
.ft a:hover { color: var(--cyan); }
.ft-disc {
  margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--inner);
  color: var(--ink-3); font-size: 13.5px;
}
.ft-copy { margin-top: 12px; color: #5F5678; font-size: 13px; font-family: var(--mono); }

/* ── 内页横幅 ── */
.page-hero { position: relative; padding-top: 54px; padding-bottom: 42px; }
.page-hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(620px 380px at 12% 12%, rgba(255, 46, 154, .26), transparent 64%),
    radial-gradient(560px 400px at 86% 30%, rgba(43, 232, 255, .18), transparent 66%);
}
.page-hero .wrap { position: relative; z-index: 1; }
.crumb { font-size: 14px; color: var(--ink-3); margin-bottom: 14px; font-family: var(--mono); }
.crumb a { color: var(--ink-3); }
.page-hero h1 { font-size: 39px; margin-bottom: 18px; color: var(--ink); }
.page-hero .lead { color: var(--ink-2); }
/* 内页首屏与正文栏左右对齐：正文那层是 .wrap.prose —— 栏宽 --col 再外加 22px 内边距。
   这里把首屏那一层 .wrap 收窄成 --col + 44px，它自带的内边距就把文字推到同一条竖线上。
   ⚠️ 不要改用「给 h1/lead 补 22px 内边距」的写法：窄屏下 .wrap 的内边距本来就只有 22px，
      叠加之后文字会缩进 44px，正文被压窄一圈。 */
.page-hero .wrap { max-width: var(--col); }

/* ── 正文排版 ── */
.prose { max-width: var(--col); margin: 0 auto; }
.prose h2 { margin-top: 0; }
.prose h2 + p { margin-top: 12px; }
.prose .sec-sub { color: var(--ink-2); }
.block { margin-bottom: 44px; }
.block:last-child { margin-bottom: 0; }
.checklist { list-style: none; padding: 0; }
.checklist li {
  position: relative; padding-left: 26px; color: var(--ink-2); font-size: 15.5px;
}
.checklist li::before {
  content: ""; position: absolute; left: 2px; top: .68em; width: 8px; height: 8px;
  transform: rotate(45deg); background: var(--cyan); box-shadow: 0 0 10px var(--cyan);
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.split .card h3 { color: var(--cyan); }
.aside {
  border-left: 2px solid var(--neon); padding: 4px 0 4px 18px; margin: 22px 0;
  color: var(--ink-2); font-size: 15.5px;
}
.inline-link { border-bottom: 1px dashed rgba(43, 232, 255, .5); }

/* ── 响应式 ── */
@media (max-width: 980px) {
  .hero { padding-top: 40px; padding-bottom: 40px; }
  .hero-in { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { font-size: 38px; }
  .hero-side { max-width: 420px; margin: 0 auto; }
  .fam, .fam:nth-child(1), .fam:nth-child(2),
  .fam:nth-child(3), .fam:nth-child(4) { grid-column: span 12; }
  .grid-3, .grid-2, .split { grid-template-columns: 1fr; }
  .shots { grid-template-columns: repeat(2, 1fr); }
  .ft-top { grid-template-columns: 1fr 1fr; }
  .page-hero h1 { font-size: 31px; }
  h2 { font-size: 25px; }
  .gidx { top: 62px; }
  .sec { padding-top: 48px; padding-bottom: 48px; }
}

@media (max-width: 620px) {
  body { font-size: 15.5px; }
  .nav-in { min-height: 60px; }
  .brand { font-size: 17px; }
  .brand img { width: 33px; height: 33px; }
  .nav-links { gap: 2px; }
  .nav-links a { padding: 6px 9px; font-size: 13.5px; }
  .nl { display: none; }
  .ns { display: inline; }
  .hero h1 { font-size: 31px; }
  .hero-cta { gap: 10px; }
  .btn-hex { padding: 14px 26px; font-size: 15px; }
  .sec-head { margin-bottom: 22px; }
  h2 { font-size: 22px; }
  .shots { grid-template-columns: 1fr; }
  .ft-top { grid-template-columns: 1fr; }
  .fam { padding: 20px 18px; }
  .card, .quote, .entry { padding: 20px; }
  .page-hero { padding-top: 36px; padding-bottom: 30px; }
  .page-hero h1 { font-size: 26px; }
  .ans { padding-left: 20px; }
  .gidx { top: 60px; }
}