/* ==========================================================================
   一推进洞 OnePutt — 官网样式
   --------------------------------------------------------------------------
   单文件、零依赖、零外部字体。配色与 LOGO 同源（assets/logo-mark.svg）：
     ink    #07120E  页面底
     deep   #0C211A  卡片/条带
     line   #17362B  分隔线
     cream  #F2EEE3  正文
     muted  #93A79C  次要文字
     mint   #5FE3A1  品牌高亮（= 屏上七色档的中段绿同一谱）
     green  #1B7A55  深绿（浅底场景用）
   ========================================================================== */

:root {
  --ink: #07120e;
  --deep: #0c211a;
  --deep-2: #0f2a21;
  --line: #17362b;
  --cream: #f2eee3;
  --muted: #93a79c;
  --mint: #5fe3a1;
  --green: #1b7a55;

  --max: 1140px;
  --r: 18px;

  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
          system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-latin: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 背景：两道极淡的径向光，模拟果岭上的天光。不用图片，避免额外请求。 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 600px at 78% -8%, rgba(95, 227, 161, .13), transparent 62%),
    radial-gradient(700px 520px at 8% 12%, rgba(27, 122, 85, .16), transparent 66%);
  z-index: 0;
}

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

a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ---------------------------------------------------------------- 顶栏 */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  background: rgba(7, 18, 14, .72);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}
header.scrolled { border-bottom-color: var(--line); }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-right: auto;
}
.brand img { width: 34px; height: 34px; }
.brand .name {
  font-family: var(--font-latin);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .18em;
}
.brand .cn {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--mint);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  gap: 26px;
  font-size: 15px;
  color: var(--muted);
}
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: var(--cream); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: transform .18s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--mint); color: #06231a; }
.btn-primary:hover { background: #7aedb4; }
.btn-ghost { border-color: rgba(242, 238, 227, .22); color: var(--cream); }
.btn-ghost:hover { border-color: rgba(242, 238, 227, .45); background: rgba(242, 238, 227, .05); }

.nav .btn { height: 40px; padding: 0 18px; font-size: 14px; }

/* ---------------------------------------------------------------- 首屏 */
.hero {
  padding: 78px 0 40px;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--mint);
  border: 1px solid rgba(95, 227, 161, .28);
  background: rgba(95, 227, 161, .07);
  padding: 7px 14px;
  border-radius: 999px;
}
.eyebrow i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 10px var(--mint);
}

h1 {
  font-size: clamp(46px, 6.2vw, 78px);
  line-height: 1.06;
  letter-spacing: .06em;
  margin: 22px 0 0;
  font-weight: 800;
}
h1 .thin {
  display: block;
  font-family: var(--font-latin);
  font-size: clamp(13px, 1.5vw, 16px);
  letter-spacing: .52em;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 14px;
}

.lede {
  font-size: clamp(17px, 1.5vw, 19px);
  color: #cddad2;
  max-width: 30em;
  margin: 20px 0 0;
}
.lede strong { color: var(--mint); font-weight: 700; }

.hero-cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

/* 首屏右侧：把真机屏装进一只圆壳里 */
.device {
  position: relative;
  width: min(360px, 78vw);
  aspect-ratio: 1;
  margin-inline: auto;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, #22453a 0%, #122b23 42%, #08150f 78%);
  box-shadow:
    0 40px 90px -30px rgba(0, 0, 0, .95),
    inset 0 0 0 1px rgba(242, 238, 227, .09),
    inset 0 2px 22px rgba(255, 255, 255, .07);
  display: grid;
  place-items: center;
}
.device::after {         /* 玻璃反光 */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: linear-gradient(150deg, rgba(255, 255, 255, .16), transparent 42%);
  pointer-events: none;
}
.device .screen {
  width: 74%;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 0 6px #0a1a14, 0 0 46px rgba(95, 227, 161, .18);
}
.device .screen img { width: 100%; height: 100%; }
.device .tag {
  position: absolute;
  bottom: 4%;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--muted);
}

/* ---------------------------------------------------------------- 数据条 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  margin: 26px 0 0;
}
.stats div {
  background: var(--ink);
  padding: 22px 20px;
}
.stats b {
  display: block;
  font-family: var(--font-latin);
  font-size: 26px;
  letter-spacing: .02em;
  color: var(--mint);
}
.stats span { font-size: 13px; color: var(--muted); letter-spacing: .06em; }

/* ---------------------------------------------------------------- 通用区块 */
section { padding: 88px 0; position: relative; z-index: 1; }
section.tight { padding: 56px 0; }

.kicker {
  font-size: 13px;
  letter-spacing: .26em;
  color: var(--mint);
  text-transform: uppercase;
  font-family: var(--font-latin);
}
h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.28;
  letter-spacing: .02em;
  margin: 12px 0 0;
  font-weight: 800;
}
.sub {
  color: var(--muted);
  max-width: 34em;
  margin: 16px 0 0;
}

/* 痛点三连 */
.pains {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 44px;
}
.pain {
  background: linear-gradient(180deg, var(--deep-2), var(--deep));
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 28px 26px;
}
.pain h3 {
  margin: 0 0 8px;
  font-size: 19px;
  letter-spacing: .02em;
}
.pain h3 em {
  font-style: normal;
  color: var(--mint);
  font-family: var(--font-latin);
  font-size: 13px;
  letter-spacing: .18em;
  display: block;
  margin-bottom: 8px;
}
.pain p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* 三步流程 */
.steps { margin-top: 46px; display: grid; gap: 0; }
.step {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 28px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step .num {
  font-family: var(--font-latin);
  font-size: 40px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--mint);
  line-height: 1;
  padding-top: 4px;
}
.step h3 { margin: 0 0 6px; font-size: 21px; letter-spacing: .02em; }
.step p { margin: 0; color: var(--muted); max-width: 46em; }
.step .aside {
  margin-top: 12px;
  font-size: 13.5px;
  color: #7f948a;
  border-left: 2px solid var(--line);
  padding-left: 12px;
}

/* 屏上截图 */
.screens {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 46px;
}
.shot {
  background: linear-gradient(180deg, #0d241c, #0a1a14);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px 22px 24px;
  text-align: center;
}
.shot .bezel {
  width: 168px;
  height: 168px;
  margin: 0 auto 20px;
  border-radius: 50%;
  padding: 9px;
  background: radial-gradient(circle at 32% 26%, #244a3d, #0a1a14 72%);
  box-shadow: inset 0 0 0 1px rgba(242, 238, 227, .08), 0 18px 34px -18px #000;
}
.shot .bezel img {
  width: 100%; height: 100%;
  border-radius: 50%;
  image-rendering: -webkit-optimize-contrast;
}
.shot b { display: block; font-size: 16px; margin-bottom: 6px; }
.shot p { margin: 0; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* 能力卡 */
.feats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 44px;
}
.feat {
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px;
  background: rgba(12, 33, 26, .55);
  transition: border-color .25s ease, transform .25s ease;
}
.feat:hover { border-color: #23543f; transform: translateY(-2px); }
.feat .ic {
  width: 40px; height: 40px;
  border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(95, 227, 161, .1);
  border: 1px solid rgba(95, 227, 161, .22);
  margin-bottom: 16px;
}
.feat .ic svg { width: 20px; height: 20px; stroke: var(--mint); fill: none; stroke-width: 1.7; }
.feat h3 { margin: 0 0 8px; font-size: 17.5px; letter-spacing: .02em; }
.feat p { margin: 0; font-size: 14.8px; color: var(--muted); }

/* 参数表 */
.specs {
  margin-top: 40px;
  border-top: 1px solid var(--line);
}
.specs .row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
}
.specs .row dt { color: var(--muted); margin: 0; }
.specs .row dd { margin: 0; }

/* FAQ */
.faq { margin-top: 40px; border-top: 1px solid var(--line); }
details {
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}
details summary {
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 14px;
}
details summary::-webkit-details-marker { display: none; }
details summary::before {
  content: "+";
  font-family: var(--font-latin);
  color: var(--mint);
  font-size: 20px;
  width: 18px;
  flex: none;
}
details[open] summary::before { content: "−"; }
details p { margin: 12px 0 0 32px; color: var(--muted); font-size: 15.5px; }

/* 收尾 CTA */
.cta-box {
  margin: 0 0 20px;
  padding: 54px 48px;
  border-radius: 26px;
  border: 1px solid #1f4a39;
  background:
    radial-gradient(620px 320px at 82% 0%, rgba(95, 227, 161, .16), transparent 70%),
    linear-gradient(180deg, #0e2a20, #081610);
  display: grid;
  grid-template-columns: 1.3fr auto;
  gap: 30px;
  align-items: center;
}
.cta-box h2 { margin: 0; }
.cta-box p { margin: 12px 0 0; color: var(--muted); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 联系方式一行：号码用等宽大字号，旁边挂一个复制按钮 */
.contact-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.contact-row .tel {
  font-family: var(--font-latin);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--cream);
}
.contact-row .sep {
  width: 1px; height: 18px;
  background: #2a5343;
}
.contact-row .hint { font-size: 13.5px; color: var(--muted); }
.contact-row .copy {
  font: inherit;
  font-size: 13px;
  color: var(--mint);
  background: rgba(95, 227, 161, .1);
  border: 1px solid rgba(95, 227, 161, .3);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  transition: background .2s ease;
}
.contact-row .copy:hover { background: rgba(95, 227, 161, .18); }
.contact-row .copy.done { color: #06231a; background: var(--mint); }

/* 页脚 */
footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 54px;
  color: #7f948a;
  font-size: 13.5px;
  position: relative;
  z-index: 1;
}
.foot {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}
.foot .brand img { width: 26px; height: 26px; }
.foot .brand .name { font-size: 14px; }
.foot .links { display: flex; gap: 20px; }

/* 滚动进场（无 JS 时保持可见，不会出现"整页空白"） */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------------------------------------------------------------- 响应式 */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 52px; }
  .hero .visual { order: -1; }
  .pains, .feats, .screens { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .cta-box { grid-template-columns: 1fr; padding: 40px 30px; }
  .nav-links { display: none; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 62px 0; }
  .pains, .feats, .screens { grid-template-columns: 1fr; }
  .step { grid-template-columns: 52px 1fr; gap: 18px; }
  .step .num { font-size: 30px; }
  .specs .row { grid-template-columns: 1fr; gap: 4px; }
  .cta-box { padding: 34px 22px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .foot { flex-direction: column; align-items: flex-start; }
}