/* 纯白极简 · 免费版产品引流 */
:root {
  --bg: #ffffff;
  --soft: #f7f7f8;
  --ink: #111111;
  --mute: #6b6b70;
  --line: #e8e8ea;
  --free: #1a7f4b;
  --cta: #111111;
  --cta-hover: #000000;
  --link: #1a7f4b;
  --shadow: 0 1px 0 rgba(0,0,0,0.04);
  --radius: 4px;
  --font-display: "Candara", "Segoe UI Variable Display", "Microsoft YaHei UI", sans-serif;
  --font-body: "Segoe UI", "Microsoft YaHei UI", sans-serif;
  --font-meta: "Cascadia Mono", "Consolas", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--bg);
  line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0 0 0.55rem; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0 0 0.85rem; }
.wrap { width: min(1080px, calc(100% - 2.5rem)); margin-inline: auto; }

.bare { background: var(--bg); }

/* slim free funnel bar */
.slim {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}
.mark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}
.mark .free {
  font-family: var(--font-meta);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--free);
  border: 1px solid rgba(26, 127, 75, 0.35);
  padding: 0.22rem 0.4rem;
}
.mark b { font-size: 1.05rem; font-family: var(--font-display); }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.15rem;
  font-size: 0.9rem;
  color: var(--mute);
}
.nav a:hover, .nav a.on { color: var(--ink); }
.start {
  display: inline-flex;
  align-items: center;
  padding: 0.48rem 0.95rem;
  background: var(--cta);
  color: #fff;
  font-weight: 700;
  font-size: 0.84rem;
  white-space: nowrap;
  border-radius: var(--radius);
  transition: background 0.15s ease;
}
.start:hover { background: var(--cta-hover); }

/* funnel hero — text first, full-bleed media */
.funnel {
  padding: 3.2rem 0 0;
}
.funnel-copy {
  max-width: 40rem;
  margin-bottom: 2rem;
}
.funnel-copy .badge {
  display: inline-block;
  font-family: var(--font-meta);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--free);
  margin-bottom: 0.9rem;
}
.funnel-copy h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  margin-bottom: 0.85rem;
  max-width: 12ch;
}
.lead {
  color: var(--mute);
  font-size: 1.05rem;
  max-width: 34rem;
  margin-bottom: 1.35rem;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 9.5rem;
  padding: 0.78rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.94rem;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  border: 1px solid transparent;
  transition: opacity 0.15s ease, background 0.15s ease;
}
.btn:hover { opacity: 0.88; }
.btn-ink {
  background: var(--cta);
  color: #fff;
}
.btn-ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.reqs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.5rem;
  font-size: 0.84rem;
  color: var(--mute);
}
.reqs b {
  color: var(--ink);
  font-family: var(--font-meta);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  margin-right: 0.35rem;
}
.bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  background: var(--soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.bleed-inner {
  width: min(1080px, calc(100% - 2.5rem));
  margin-inline: auto;
  padding: 0;
}
.bleed-inner img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.sec { padding: 3.5rem 0; }
.head {
  margin-bottom: 1.6rem;
  max-width: 36rem;
}
.head .label {
  font-family: var(--font-meta);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 0.4rem;
}
.head h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.head p { margin: 0.4rem 0 0; color: var(--mute); font-size: 0.98rem; }

/* free packs — flat rows */
.packs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.pack {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.35rem 1.1rem 1.2rem;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-height: 100%;
}
.pack .tier {
  font-family: var(--font-meta);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--free);
}
.pack .os {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0.15rem 0;
}
.pack .meta { margin: 0; font-size: 0.88rem; color: var(--mute); }
.pack .meta b { color: var(--ink); font-weight: 600; }
.pack .btn { margin-top: auto; padding-top: 0.95rem; width: 100%; }

/* feature matrix — ruled */
.matrix {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.cell {
  padding: 1.4rem 1rem 1.3rem 0;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding-left: 1rem;
}
.cell:nth-child(5n) { border-right: 0; }
.cell .ico {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 0.55rem;
  color: var(--ink);
}
.cell h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.cell p { margin: 0; font-size: 0.88rem; color: var(--mute); }

/* solution */
.split-sol {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: center;
}
.essay h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); }
.essay .bullets {
  list-style: none;
  padding: 0;
  margin: 1.1rem 0 0;
  display: grid;
  gap: 0.55rem;
}
.essay .bullets li {
  padding-left: 0;
  color: var(--mute);
  font-size: 0.95rem;
  border-left: 2px solid var(--free);
  padding-left: 0.85rem;
}
.shots { display: grid; gap: 0.75rem; }
.shots .frame {
  background: var(--soft);
  border: 1px solid var(--line);
  overflow: hidden;
}
.shots .pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* trust */
.trust {
  text-align: left;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.trust .big {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  margin-bottom: 0.4rem;
}
.trust .big em {
  font-style: normal;
  color: var(--free);
}
.trust .sub { color: var(--mute); margin-bottom: 1.2rem; }
.brands {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin-bottom: 1.4rem;
  color: var(--mute);
  font-size: 0.95rem;
  font-weight: 600;
}
.brands span { position: relative; }
.brands span:not(:last-child)::after {
  content: "·";
  position: absolute;
  right: -0.85rem;
  color: var(--line);
}
.trust .frame {
  max-width: 720px;
  background: var(--soft);
  border: 1px solid var(--line);
  overflow: hidden;
}

/* news + help */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
.panel-h {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--line);
}
.panel-h h2 { font-size: 1.25rem; margin: 0; }
.panel-h a { color: var(--link); font-size: 0.86rem; font-weight: 700; }
.row {
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}
.row:last-child { border-bottom: 0; }
.row time {
  font-family: var(--font-meta);
  font-size: 0.72rem;
  color: var(--mute);
}
.row h3 { font-size: 0.98rem; margin: 0.15rem 0; }
.row p { margin: 0; font-size: 0.88rem; color: var(--mute); }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.7rem 0;
}
.faq details:last-child { border-bottom: 0; }
.faq summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  float: right;
  color: var(--mute);
  font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--mute); font-size: 0.9rem; margin: 0.45rem 0 0.2rem; }
.faq a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }

/* bottom CTA */
.again {
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 2.2rem 1.8rem;
  margin: 1rem 0 2.5rem;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.5rem;
  align-items: center;
}
.again h2 { font-size: clamp(1.4rem, 2.4vw, 1.85rem); }
.again .lead { color: var(--mute); }
.gains {
  list-style: none;
  padding: 0;
  margin: 0.9rem 0 0;
  display: grid;
  gap: 0.4rem;
}
.gains li {
  font-size: 0.95rem;
  color: var(--mute);
  padding-left: 0.9rem;
  position: relative;
}
.gains li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.35rem;
  height: 0.35rem;
  background: var(--free);
  border-radius: 50%;
}
.again .frame {
  border: 1px solid var(--line);
  background: #fff;
  overflow: hidden;
}

.page-hero {
  padding: 2.5rem 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.page-hero .frame {
  background: var(--soft);
  border: 1px solid var(--line);
  overflow: hidden;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 1.4rem 0 2.2rem;
  color: var(--mute);
  font-size: 0.86rem;
  border-top: 1px solid var(--line);
}
.foot nav { display: flex; gap: 1.1rem; }
.foot a:hover { color: var(--ink); }

@media (max-width: 960px) {
  .packs { grid-template-columns: 1fr 1fr; }
  .matrix { grid-template-columns: 1fr 1fr; }
  .cell:nth-child(5n) { border-right: 1px solid var(--line); }
  .cell:nth-child(2n) { border-right: 0; }
  .split-sol, .split, .again, .page-hero { grid-template-columns: 1fr; }
  .nav { display: none; }
}
@media (max-width: 560px) {
  .packs, .matrix, .shots .pair { grid-template-columns: 1fr; }
  .cell { border-right: 0 !important; }
  .actions { flex-direction: column; }
  .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Hero image hard rules — end of file */
.funnel,
.page-hero {
  align-items: center;
}
.bleed-inner,
.page-hero .frame,
.again .frame,
.shots .frame,
.trust .frame {
  align-self: center;
  height: auto;
  padding: 0;
  margin-top: 0;
  margin-bottom: 0;
  overflow: hidden;
  transform: none;
}
.bleed-inner img,
.page-hero .frame img,
.again .frame img,
.shots .frame img,
.trust .frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 0;
  clip-path: none;
  transform: none;
}