/* 轻快浅青 · 新媒体内容协作 */
:root {
  --bg: #f3fbf9;
  --paper: #ffffff;
  --mist: #e4f6f2;
  --ink: #163836;
  --mute: #5a7a76;
  --line: rgba(46, 150, 138, 0.16);
  --teal: #2f9e90;
  --teal-deep: #1f7a70;
  --mint: #7ed9cb;
  --sun: #ffb454;
  --shadow: 0 14px 36px rgba(31, 122, 112, 0.10);
  --radius: 18px;
  --font-display: "Trebuchet MS", "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:
    radial-gradient(900px 460px at 12% -8%, rgba(126, 217, 203, 0.45), transparent 60%),
    radial-gradient(700px 420px at 92% 8%, rgba(255, 180, 84, 0.14), transparent 55%),
    linear-gradient(180deg, #edfaf7 0%, var(--bg) 38%, #eef8f6 100%);
  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: 1.2; margin: 0 0 0.55rem; letter-spacing: -0.01em; }
p { margin: 0 0 0.85rem; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }

/* soft content studio grain */
.studio { position: relative; overflow: clip; }
.studio::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(47, 158, 144, 0.05) 0 1px, transparent 1.5px),
    radial-gradient(circle at 80% 70%, rgba(47, 158, 144, 0.04) 0 1px, transparent 1.5px);
  background-size: 28px 28px, 36px 36px;
}
.studio > * { position: relative; z-index: 1; }

/* masthead — content channel bar */
.channel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 0.4rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.brand .dot {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--mint), var(--teal));
  box-shadow: 0 8px 18px rgba(47, 158, 144, 0.28);
  position: relative;
}
.brand .dot::after {
  content: "";
  position: absolute;
  inset: 0.55rem;
  border-radius: 50%;
  background: #fff;
  opacity: 0.85;
}
.brand b { display: block; font-size: 1.15rem; font-family: var(--font-display); }
.brand small {
  display: block;
  font-family: var(--font-meta);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--mute);
  text-transform: uppercase;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-size: 0.92rem;
  color: var(--mute);
}
.nav a:hover, .nav a.on { color: var(--teal-deep); }
.go {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  background: var(--teal);
  color: #fff;
  font-weight: 700;
  font-size: 0.88rem;
  white-space: nowrap;
  box-shadow: 0 10px 22px rgba(47, 158, 144, 0.28);
  transition: transform 0.2s ease, background 0.2s ease;
}
.go:hover { background: var(--teal-deep); transform: translateY(-1px); }

/* hero — editorial content board */
.feed-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.6rem;
  align-items: center;
  padding: 1.4rem 0 2.2rem;
}
.story {
  background: linear-gradient(165deg, rgba(255,255,255,0.92), rgba(228,246,242,0.75));
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding: 1.55rem 1.55rem 1.4rem;
  box-shadow: var(--shadow);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: rgba(47, 158, 144, 0.12);
  color: var(--teal-deep);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}
.chip i {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--teal);
  display: inline-block;
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}
.story h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.75rem);
  margin-bottom: 0.7rem;
}
.lead { color: var(--mute); font-size: 1.02rem; max-width: 36rem; }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.15rem 0 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 9.5rem;
  padding: 0.72rem 1.15rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-teal {
  background: linear-gradient(135deg, var(--teal), var(--teal-deep));
  color: #fff;
  box-shadow: 0 12px 24px rgba(47, 158, 144, 0.28);
}
.btn-soft {
  background: #fff;
  color: var(--teal-deep);
  border-color: rgba(47, 158, 144, 0.28);
}
.sys {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}
.sys p {
  margin: 0;
  padding: 0.55rem 0.7rem;
  border-radius: 12px;
  background: rgba(255,255,255,0.8);
  border: 1px dashed rgba(47, 158, 144, 0.28);
  font-size: 0.82rem;
  color: var(--mute);
}
.sys b {
  display: block;
  color: var(--ink);
  font-family: var(--font-meta);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  margin-bottom: 0.15rem;
}
.cover {
  align-self: center;
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--mist);
}
.cover img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.sec { padding: 2.4rem 0; }
.head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.head h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); }
.head p { margin: 0; color: var(--mute); max-width: 34rem; font-size: 0.95rem; }
.tag {
  font-family: var(--font-meta);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--teal);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

/* download — content pack tiles (zig order via DOM) */
.packs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
}
.pack {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1rem 1rem;
  box-shadow: 0 8px 22px rgba(31, 122, 112, 0.06);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.pack:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.pack .os {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0.2rem 0 0.15rem;
}
.pack .meta { margin: 0; font-size: 0.86rem; color: var(--mute); }
.pack .meta b { color: var(--ink); font-weight: 700; }
.pack .badge {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--teal-deep);
  background: var(--mist);
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
}
.pack .btn { margin-top: 0.7rem; width: 100%; }

/* features — content pillars matrix */
.pillars {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.8rem;
}
.pillar {
  background: linear-gradient(180deg, #fff, var(--mist));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 0.9rem;
  text-align: left;
}
.pillar .ico {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--teal-deep);
  font-family: var(--font-display);
  font-weight: 800;
  margin-bottom: 0.7rem;
  box-shadow: 0 6px 14px rgba(47, 158, 144, 0.1);
}
.pillar h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.pillar p { margin: 0; font-size: 0.88rem; color: var(--mute); }

/* solution — editorial spread */
.spread {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 1.4rem;
  align-items: center;
}
.essay {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  padding: 1.4rem 1.35rem;
  box-shadow: var(--shadow);
}
.essay h2 { font-size: clamp(1.4rem, 2.3vw, 1.85rem); }
.essay .bullets {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.55rem;
}
.essay .bullets li {
  padding-left: 1.15rem;
  position: relative;
  color: var(--mute);
  font-size: 0.94rem;
}
.essay .bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(126, 217, 203, 0.35);
}
.mosaic {
  display: grid;
  gap: 0.75rem;
}
.mosaic .shot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--mist);
  box-shadow: 0 10px 24px rgba(31, 122, 112, 0.08);
}
.mosaic .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* trust */
.trust {
  text-align: center;
  background: linear-gradient(180deg, rgba(255,255,255,0.7), rgba(228,246,242,0.9));
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.8rem 1.2rem 1.4rem;
}
.trust .big {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  margin-bottom: 0.35rem;
}
.trust .big em {
  font-style: normal;
  color: var(--teal-deep);
  font-size: 1.25em;
}
.trust .sub { color: var(--mute); margin-bottom: 1rem; }
.brands {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
}
.brands span {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--mute);
}
.trust .shot {
  max-width: 720px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

/* news + help */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1rem;
}
.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.15rem 0.9rem;
  box-shadow: 0 8px 22px rgba(31, 122, 112, 0.06);
}
.panel-h {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.85rem;
}
.panel-h a { color: var(--teal); font-size: 0.88rem; font-weight: 700; }
.item {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: 0.7rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}
.item:last-child { border-bottom: 0; }
.item time {
  font-family: var(--font-meta);
  font-size: 0.75rem;
  color: var(--teal);
  padding-top: 0.2rem;
}
.item h3 { font-size: 0.98rem; margin-bottom: 0.2rem; }
.item p { margin: 0; font-size: 0.86rem; color: var(--mute); }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem 0;
}
.faq details:last-child { border-bottom: 0; }
.faq summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  padding: 0.25rem 0;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  float: right;
  color: var(--teal);
  font-weight: 700;
}
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--mute); font-size: 0.9rem; margin: 0.4rem 0 0.55rem; }
.faq a { color: var(--teal-deep); text-decoration: underline; text-underline-offset: 2px; }

/* bottom CTA */
.encore {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.2rem;
  align-items: center;
  background: linear-gradient(135deg, #1f7a70, #2f9e90 55%, #56c4b4);
  color: #fff;
  border-radius: calc(var(--radius) + 6px);
  padding: 1.5rem 1.4rem;
  margin: 0.5rem 0 2rem;
  box-shadow: 0 18px 40px rgba(31, 122, 112, 0.28);
}
.encore h2 { color: #fff; font-size: clamp(1.35rem, 2.3vw, 1.75rem); }
.encore .lead { color: rgba(255,255,255,0.88); }
.gains {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 0;
  display: grid;
  gap: 0.4rem;
}
.gains li {
  padding-left: 1.1rem;
  position: relative;
  font-size: 0.94rem;
  color: rgba(255,255,255,0.92);
}
.gains li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--sun);
}
.encore .btn-teal {
  background: #fff;
  color: var(--teal-deep);
  box-shadow: none;
}
.encore .btn-soft {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.45);
}
.encore .shot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.12);
}

.page-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.4rem;
  align-items: center;
  padding: 1.2rem 0 1.8rem;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 1.2rem 0 2rem;
  color: var(--mute);
  font-size: 0.88rem;
  border-top: 1px solid var(--line);
}
.foot nav { display: flex; gap: 1rem; }
.foot a:hover { color: var(--teal-deep); }

@media (max-width: 960px) {
  .feed-hero, .spread, .split, .encore, .page-hero { grid-template-columns: 1fr; }
  .packs { grid-template-columns: 1fr 1fr; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
}
@media (max-width: 560px) {
  .packs, .pillars, .sys, .mosaic .row { grid-template-columns: 1fr; }
  .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, high priority */
.feed-hero,
.page-hero {
  align-items: center;
}
.feed-hero .cover,
.page-hero .cover,
.encore .shot,
.mosaic .shot,
.trust .shot {
  align-self: center;
  height: auto;
  padding: 0;
  margin-top: 0;
  margin-bottom: 0;
  overflow: hidden;
  transform: none;
}
.feed-hero .cover img,
.page-hero .cover img,
.encore .shot img,
.mosaic .shot img,
.trust .shot 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;
}