/* 薪火助手 xinhuo8.cn 全站样式 */
:root {
  --pink: #ff3d72;
  --pink-deep: #e01b53;
  --pink-soft: #ff8fb0;
  --pink-bg: #fff5f8;
  --ink: #1b1d24;
  --ink-2: #454a55;
  --ink-3: #767d8c;
  --line: #f0e2e7;
  --white: #fff;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(224, 27, 83, .09);
  --shadow-lg: 0 20px 50px rgba(224, 27, 83, .16);
  --max: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

a { color: var(--pink-deep); text-decoration: none; }
a:hover { color: var(--pink); }
img { max-width: 100%; height: auto; display: block; border: 0; }
ul, ol { list-style: none; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------- 头部导航 ---------- */
/* 顶部滚动通知条 */
.ticker {
  position: relative;
  overflow: hidden;
  background: linear-gradient(96deg, var(--pink-deep), var(--pink) 55%, #ff6f95);
  color: #fff;
  font-size: 14px;
  line-height: 38px;
  height: 38px;
}
.ticker::before,
.ticker::after {
  content: "";
  position: absolute; top: 0; width: 46px; height: 100%; z-index: 2; pointer-events: none;
}
.ticker::before { left: 0; background: linear-gradient(90deg, var(--pink-deep), rgba(224, 27, 83, 0)); }
.ticker::after { right: 0; background: linear-gradient(270deg, #ff6f95, rgba(255, 111, 149, 0)); }
.ticker-track {
  display: flex; width: max-content;
  animation: ticker-run 42s linear infinite;
}
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-item {
  flex: 0 0 auto; padding-right: 64px; white-space: nowrap;
  letter-spacing: .3px;
}
.ticker-item b { font-weight: 800; }
.ticker-item i { font-style: normal; opacity: .78; padding: 0 10px; }
@keyframes ticker-run {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (max-width: 640px) {
  .ticker { font-size: 13px; line-height: 34px; height: 34px; }
  .ticker-item { padding-right: 44px; }
  .ticker-track { animation-duration: 34s; }
}
@media (prefers-reduced-motion: reduce) {
  .ticker-track { animation: none; }
  .ticker { overflow-x: auto; }
}

.site-header {
  position: sticky; top: 0; z-index: 99;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 19px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark {
  position: relative; flex: 0 0 auto; width: 42px; height: 42px; border-radius: 13px; padding: 2px;
  background: linear-gradient(145deg, #ffb3c9, var(--pink-deep));
  box-shadow: 0 6px 16px rgba(224, 27, 83, .26);
}
.brand-mark::after {
  content: ""; position: absolute; inset: 2px; border-radius: 11px; pointer-events: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), inset 0 -8px 14px rgba(224, 27, 83, .07);
}
.brand-mark img { width: 100%; height: 100%; border-radius: 11px; background: #fff; object-fit: cover; }
.brand-name {
  background: linear-gradient(96deg, var(--ink) 30%, var(--pink-deep));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: .5px;
}
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--ink-3); letter-spacing: .5px; line-height: 1.2; -webkit-text-fill-color: var(--ink-3); }
.nav-menu { display: flex; align-items: center; gap: 26px; }
.nav-menu a { color: var(--ink-2); font-size: 15px; font-weight: 500; }
.nav-menu a:hover, .nav-menu a.on { color: var(--pink-deep); }
.nav-cta {
  background: linear-gradient(135deg, var(--pink), var(--pink-deep));
  color: #fff !important; padding: 9px 20px; border-radius: 999px;
  font-weight: 700; font-size: 15px; box-shadow: 0 6px 16px rgba(224, 27, 83, .28);
}
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: #fff; cursor: pointer; }
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--ink); border-radius: 2px; }

/* ---------- 首屏 ---------- */
.hero { position: relative; padding: 70px 0 80px; background: linear-gradient(180deg, var(--pink-bg), #fff 78%); overflow: hidden; }
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(60px); opacity: .5; pointer-events: none;
}
.hero::before { width: 420px; height: 420px; background: #ffc2d6; top: -140px; right: -100px; }
.hero::after { width: 340px; height: 340px; background: #ffe0ea; bottom: -160px; left: -120px; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: 50px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--pink-deep);
  border: 1px solid #ffd6e2; border-radius: 999px; padding: 6px 16px; font-size: 13px; font-weight: 700;
  box-shadow: var(--shadow);
}
.hero h1 { font-size: 42px; line-height: 1.28; margin: 20px 0 16px; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: var(--pink-deep); }
.hero h1 .sub { display: block; }
.hero p.lead { font-size: 17px; color: var(--ink-2); margin-bottom: 26px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px; font-weight: 800; font-size: 16px;
  border: 2px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .2s;
}
.btn-main { background: linear-gradient(135deg, var(--pink), var(--pink-deep)); color: #fff !important; box-shadow: 0 12px 26px rgba(224, 27, 83, .3); }
.btn-ghost { background: #fff; color: var(--pink-deep) !important; border-color: #ffd0de; box-shadow: var(--shadow); }
.btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.btn .i { width: 19px; height: 19px; flex: 0 0 auto; }
.btn-main .i { filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .18)); }
.meta-row { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 13px; color: var(--ink-3); }
.meta-row b { color: var(--ink); font-weight: 700; }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 34px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 12px; text-align: center; box-shadow: var(--shadow); }
.stat b { display: block; font-size: 22px; color: var(--pink-deep); line-height: 1.3; }
.stat span { font-size: 12px; color: var(--ink-3); }

.phone-stack { position: relative; display: flex; justify-content: center; }
.phone {
  width: 252px; border-radius: 30px; background: #111; padding: 8px;
  box-shadow: var(--shadow-lg); border: 1px solid #222;
}
.phone img {
  width: 100%; border-radius: 24px; aspect-ratio: 620 / 1206;
  object-fit: cover; object-position: top center; background: #fff;
}
.phone-side {
  position: absolute; width: 168px; right: -14px; bottom: 24px; border-radius: 22px;
  background: #111; padding: 6px; box-shadow: var(--shadow-lg); transform: rotate(6deg);
}
.phone-side img {
  width: 100%; border-radius: 17px; aspect-ratio: 620 / 1206;
  object-fit: cover; object-position: top center; background: #fff;
}

/* ---------- 通用区块 ---------- */
section { padding: 78px 0; }
.sec-alt { background: var(--pink-bg); }
.sec-head { text-align: center; max-width: 760px; margin: 0 auto 44px; }
.kicker { display: block; font-size: 12px; font-weight: 800; letter-spacing: 3px; color: var(--pink); text-transform: uppercase; margin-bottom: 12px; }
.sec-head h2 { font-size: 32px; line-height: 1.35; margin-bottom: 12px; }
.sec-head p { color: var(--ink-3); font-size: 16px; }

/* ---------- 客服 ---------- */
.cs-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; max-width: 840px; margin: 0 auto; }
.cs-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  text-align: center; box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s;
}
.cs-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.cs-card .tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--pink-deep); background: var(--pink-bg); border-radius: 999px; padding: 4px 14px; }
.cs-card .num {
  font-size: 27px; font-weight: 800; letter-spacing: 1px; margin: 14px 0 6px; color: var(--ink);
  font-family: "SFMono-Regular", Consolas, monospace;
}
.cs-card p { font-size: 13px; color: var(--ink-3); margin-bottom: 16px; }
.copy-btn {
  border: 0; cursor: pointer; background: linear-gradient(135deg, var(--pink), var(--pink-deep)); color: #fff;
  font-size: 14px; font-weight: 700; padding: 10px 26px; border-radius: 999px;
}
.copy-btn.done { background: #16a34a; }
.cs-note { text-align: center; font-size: 13px; color: var(--ink-3); margin-top: 22px; }

/* ---------- 功能 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s, border-color .25s;
}
.feat:hover { transform: translateY(-6px); border-color: #ffc9da; box-shadow: var(--shadow-lg); }
.feat .ico {
  width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; font-size: 24px;
  background: linear-gradient(135deg, #fff0f5, #ffe1ea); margin-bottom: 16px;
}
.feat h3 { font-size: 19px; margin-bottom: 10px; }
.feat p { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 图文展示 ---------- */
.shot-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-bottom: 76px; }
.shot-row:last-child { margin-bottom: 0; }
.shot-row.rev .shot-txt { order: 2; }
.shot-txt h3 { font-size: 27px; line-height: 1.4; margin: 10px 0 14px; }
.shot-txt p { color: var(--ink-2); margin-bottom: 18px; }
.tick { display: grid; gap: 10px; }
.tick li { position: relative; padding-left: 28px; font-size: 15px; color: var(--ink-2); }
.tick li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 19px; height: 19px; margin-top: 5px;
  background: var(--pink); color: #fff; border-radius: 50%; font-size: 11px; display: grid; place-items: center; font-weight: 800;
}
.shot-pic { display: flex; justify-content: center; }
.shot-pic .phone { width: 278px; }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why {
  background: #fff; border-radius: var(--radius); padding: 26px 22px; border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.why b { display: block; font-size: 17px; margin-bottom: 8px; }
.why span { font-size: 14px; color: var(--ink-3); }
.why i { font-style: normal; font-size: 26px; display: block; margin-bottom: 12px; }

/* ---------- 下载步骤 ---------- */
.dl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.dl-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.dl-card h3 { display: flex; align-items: center; gap: 10px; font-size: 21px; margin-bottom: 6px; }
.dl-card h3 .i { width: 23px; height: 23px; flex: 0 0 auto; color: var(--pink-deep); }
.dl-card .spec { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }
.steps { counter-reset: s; display: grid; gap: 14px; margin-bottom: 22px; }
.steps li { counter-increment: s; position: relative; padding-left: 40px; font-size: 15px; color: var(--ink-2); }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 2px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--pink-bg); color: var(--pink-deep); font-weight: 800; font-size: 13px; display: grid; place-items: center;
  border: 1px solid #ffd6e2;
}
.dl-card .btn { width: 100%; }

/* ---------- 更新日志 ---------- */
.log { max-width: 820px; margin: 0 auto; display: grid; gap: 18px; }
.log-item { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--pink); border-radius: 14px; padding: 22px 26px; box-shadow: var(--shadow); }
.log-item .ver { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.log-item .ver b { font-size: 18px; color: var(--pink-deep); }
.log-item .ver time { font-size: 13px; color: var(--ink-3); }
.log-item li { font-size: 14.5px; color: var(--ink-2); padding-left: 16px; position: relative; }
.log-item li::before { content: "·"; position: absolute; left: 4px; color: var(--pink); font-weight: 800; }

/* ---------- 评价 ---------- */
.say-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.say { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.say p { font-size: 15px; color: var(--ink-2); margin-bottom: 16px; }
.say .who { font-size: 13px; color: var(--ink-3); }
.say .who b { color: var(--ink); font-size: 15px; margin-right: 8px; }
.say .stars { color: #ffb400; font-size: 14px; margin-bottom: 10px; }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 0 24px; box-shadow: var(--shadow); }
.faq summary {
  cursor: pointer; list-style: none; font-weight: 700; font-size: 16.5px; padding: 20px 30px 20px 0; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  color: var(--pink-deep); font-size: 22px; font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq .ans { padding: 0 0 20px; font-size: 15px; color: var(--ink-2); border-top: 1px dashed var(--line); padding-top: 16px; }

/* ---------- CTA 尾块 ---------- */
.cta {
  background: linear-gradient(135deg, var(--pink-deep), var(--pink)); color: #fff; text-align: center; padding: 76px 0;
}
.cta h2 { font-size: 32px; margin-bottom: 12px; }
.cta p { opacity: .92; margin-bottom: 28px; font-size: 16px; }
.cta .btn-main { background: #fff; color: var(--pink-deep) !important; box-shadow: 0 12px 26px rgba(0, 0, 0, .18); }
.cta .btn-ghost { background: transparent; color: #fff !important; border-color: rgba(255, 255, 255, .7); box-shadow: none; }

/* ---------- 页脚 ---------- */
.site-footer { background: #16171c; color: #9aa0ab; padding: 54px 0 26px; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; padding-bottom: 30px; border-bottom: 1px solid #26282f; }
.foot-grid h4 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.foot-grid a { color: #9aa0ab; }
.foot-grid a:hover { color: #fff; }
.foot-grid li { margin-bottom: 9px; }
.foot-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 14px; color: #fff; font-weight: 800; font-size: 18px; }
.foot-brand .brand-mark { width: 40px; height: 40px; border-radius: 12px; box-shadow: none; }
.foot-brand .brand-mark img { border-radius: 10px; }
.copy { text-align: center; padding-top: 22px; font-size: 13px; color: #6f757f; }
.copy a { color: #9aa0ab; }

/* ---------- 内页头部 ---------- */
.page-head { background: linear-gradient(180deg, var(--pink-bg), #fff); padding: 54px 0 40px; text-align: center; }
.page-head h1 { font-size: 34px; margin-bottom: 12px; }
.page-head p { color: var(--ink-3); max-width: 720px; margin: 0 auto; }
.crumb { font-size: 13px; color: var(--ink-3); margin-bottom: 16px; }
.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--pink-deep); }

.prose { max-width: 860px; margin: 0 auto; }
.prose h2 { font-size: 26px; margin: 38px 0 14px; }
.prose h3 { font-size: 20px; margin: 26px 0 10px; }
.prose p { color: var(--ink-2); margin-bottom: 14px; }
.prose ul { display: grid; gap: 10px; margin-bottom: 16px; }
.prose ul li { padding-left: 20px; position: relative; color: var(--ink-2); }
.prose ul li::before { content: "•"; position: absolute; left: 4px; color: var(--pink); }
.tip { background: var(--pink-bg); border-left: 4px solid var(--pink); border-radius: 12px; padding: 18px 22px; margin: 22px 0; font-size: 15px; color: var(--ink-2); }

/* ---------- 悬浮下载条（移动端） ---------- */
.fixed-bar { display: none; }

/* ---------- 动效 ---------- */
.rise { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.rise.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 33px; }
  .feat-grid, .say-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .shot-row { grid-template-columns: 1fr; gap: 30px; }
  .shot-row.rev .shot-txt { order: 0; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  section { padding: 56px 0; }
  .nav-menu {
    display: none; position: absolute; left: 0; right: 0; top: 68px; background: #fff;
    flex-direction: column; align-items: stretch; gap: 0; padding: 10px 20px 18px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-menu .nav-cta { text-align: center; margin-top: 12px; border: 0; }
  .nav-toggle { display: block; }
  .hero { padding: 44px 0 56px; }
  .hero h1 { font-size: 27px; }
  .sec-head h2, .cta h2 { font-size: 24px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .cs-grid, .dl-grid, .feat-grid, .say-grid, .why-grid { grid-template-columns: 1fr; }
  .phone { width: 222px; }
  .phone-side { display: none; }
  .btn { width: 100%; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  body { padding-bottom: calc(86px + env(safe-area-inset-bottom)); }
  .fixed-bar {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 98; gap: 10px;
    background: rgba(255, 255, 255, .96); border-top: 1px solid var(--line);
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    backdrop-filter: blur(10px);
  }
  .fixed-bar .btn { padding: 12px 10px; font-size: 15px; }
}