/* 网易UU远程 · 杂志风浅底 + 墨色字 + 网易红 */
:root {
  --paper: #f7f8fb;
  --white: #ffffff;
  --ink: #10141b;
  --soft: #5a6472;
  --line: #dce1e8;
  --red: #e60012;
  --red2: #b8000e;
  --blush: rgba(230, 0, 18, 0.07);
  --max: 1100px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow: 0 20px 50px rgba(16, 20, 27, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.box {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

/* Header */
.bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 248, 251, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.bar-in {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1;
  font-weight: 800;
  font-size: 16px;
  white-space: nowrap;
}

.brand i {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  display: grid;
  place-items: center;
  font-style: normal;
  font-size: 11px;
  font-weight: 900;
}

.nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav a {
  padding: 8px 11px;
  font-size: 14px;
  color: var(--soft);
  border-radius: 999px;
  white-space: nowrap;
}

.nav a:hover,
.nav a.on {
  color: var(--ink);
  background: rgba(16, 20, 27, 0.05);
}

.nav a.on {
  color: var(--red);
  background: var(--blush);
  font-weight: 700;
}

.side {
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 1;
  margin-left: auto;
}

.dl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  background: var(--red);
  color: #fff !important;
  font-size: 13px;
  font-weight: 700;
  border-radius: 999px;
}

.dl:hover {
  background: var(--red2);
}

.nav-dl {
  display: none;
}

.ham {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 10px;
  cursor: pointer;
}

.ham span {
  display: block;
  width: 16px;
  height: 2px;
  margin: 3px auto;
  background: var(--ink);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-red {
  background: var(--red);
  color: #fff;
}

.btn-red:hover {
  background: var(--red2);
}

.btn-out {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-out:hover {
  border-color: var(--ink);
  background: var(--white);
}

.btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Hero — brand first */
.splash {
  position: relative;
  overflow: hidden;
  padding: 64px 0 72px;
  background:
    linear-gradient(180deg, #ffffff 0%, var(--paper) 100%),
    radial-gradient(ellipse 60% 50% at 100% 0%, rgba(230, 0, 18, 0.09), transparent 60%);
}

.splash::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 10%;
  width: 42%;
  height: 80%;
  background:
    linear-gradient(135deg, rgba(230, 0, 18, 0.12), transparent 55%),
    repeating-linear-gradient(
      -18deg,
      transparent,
      transparent 18px,
      rgba(16, 20, 27, 0.03) 18px,
      rgba(16, 20, 27, 0.03) 19px
    );
  border-radius: 32px 0 0 32px;
  pointer-events: none;
}

.splash-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.brand-hero {
  margin: 0 0 10px;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.brand-hero em {
  font-style: normal;
  color: var(--red);
}

.splash h2 {
  margin: 0 0 14px;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 600;
  color: var(--soft);
}

.splash p {
  margin: 0 0 26px;
  max-width: 34em;
  color: var(--soft);
  font-size: 16px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tags span {
  padding: 5px 11px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  font-size: 12px;
  color: var(--soft);
}

.device {
  width: min(100%, 400px);
  margin-left: auto;
  padding: 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.device-top {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.device-top b {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d0d5de;
}

.device-top b:first-child {
  background: var(--red);
}

.device-screen {
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  background: linear-gradient(150deg, #171c25, #0c1016);
  color: #fff;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 20px;
}

.device-screen strong {
  display: block;
  font-size: 22px;
  letter-spacing: 0.12em;
}

.device-screen small {
  color: rgba(255, 255, 255, 0.6);
}

/* Sections */
.sec {
  padding: 68px 0;
}

.sec-w {
  background: var(--white);
  border-block: 1px solid var(--line);
}

.head {
  max-width: 580px;
  margin-bottom: 32px;
}

.head .k {
  display: block;
  margin-bottom: 8px;
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.head h2 {
  margin: 0 0 8px;
  font-size: clamp(1.55rem, 2.6vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.head p {
  margin: 0;
  color: var(--soft);
}

/* Three truths */
.truths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.truth {
  padding: 26px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  border-top: 3px solid var(--red);
}

.truth h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.truth p {
  margin: 0;
  color: var(--soft);
  font-size: 14px;
}

/* Feature list */
.feats {
  display: grid;
  gap: 12px;
}

.feat {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  padding: 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.feat .m {
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
}

.feat h3 {
  margin: 4px 0 0;
  font-size: 17px;
}

.feat p {
  margin: 0;
  color: var(--soft);
  font-size: 14px;
}

/* Scene row */
.scenes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.scene {
  min-height: 190px;
  padding: 20px;
  border-radius: 14px;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: var(--white);
}

.scene:nth-child(odd) {
  background: linear-gradient(180deg, #fff 40%, #fff0f1);
}

.scene h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.scene p {
  margin: 0;
  color: var(--soft);
  font-size: 13px;
}

/* OS */
.os {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.os span {
  padding: 11px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

/* CTA */
.band {
  padding: 52px 0;
  background: var(--ink);
  color: #fff;
}

.band-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.band h2 {
  margin: 0 0 6px;
  font-size: 1.7rem;
}

.band p {
  margin: 0;
  color: rgba(255, 255, 255, 0.65);
}

.band .btn-out {
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

/* Inner */
.ptop {
  padding: 48px 0 32px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.ptop .k {
  display: block;
  margin-bottom: 8px;
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.ptop h1 {
  margin: 0 0 8px;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 900;
}

.ptop p {
  margin: 0;
  max-width: 40em;
  color: var(--soft);
}

/* Download */
.dls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.dlc {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dlc.hot {
  border-color: rgba(230, 0, 18, 0.35);
  background: linear-gradient(165deg, #fff5f5, #fff);
}

.dlc h3 {
  margin: 0;
}

.dlc p {
  margin: 0;
  flex: 1;
  color: var(--soft);
  font-size: 14px;
}

/* Steps */
.steps {
  counter-reset: s;
  display: grid;
  gap: 10px;
}

.step {
  counter-increment: s;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  padding: 18px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.step::before {
  content: counter(s, decimal-leading-zero);
  font-weight: 900;
  color: var(--red);
  font-size: 18px;
}

.step h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.step p {
  margin: 0;
  color: var(--soft);
  font-size: 14px;
}

/* FAQ */
.faq details {
  margin-bottom: 10px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.faq summary {
  padding: 15px 18px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details[open] summary {
  color: var(--red);
  border-bottom: 1px solid var(--line);
}

.faq p {
  margin: 0;
  padding: 12px 18px 16px;
  color: var(--soft);
  font-size: 14px;
}

.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.pane {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.pane h3 {
  margin: 0 0 10px;
}

.pane li {
  color: var(--soft);
  font-size: 14px;
  margin-bottom: 6px;
}

.pane li::before {
  content: "– ";
  color: var(--red);
}

.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--white);
}

.spec th,
.spec td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.spec th {
  width: 28%;
  background: var(--paper);
  color: var(--soft);
}

/* Footer */
.ft {
  padding: 44px 0 24px;
  background: #0c0f14;
  color: #9aa3b0;
}

.ft-g {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.ft-b {
  margin-bottom: 8px;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
}

.ft p {
  margin: 0;
  font-size: 13px;
  max-width: 26em;
}

.ft h4 {
  margin: 0 0 10px;
  color: #fff;
  font-size: 13px;
}

.ft a {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  color: #7a8492;
}

.ft a:hover {
  color: #fff;
}

.ft-bot {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  font-size: 12px;
  color: #606875;
}

@media (max-width: 960px) {
  .splash-grid,
  .feat,
  .cols,
  .ft-g {
    grid-template-columns: 1fr;
  }

  .truths,
  .scenes,
  .dls {
    grid-template-columns: 1fr 1fr;
  }

  .device {
    margin: 0 auto;
  }

  .splash::after {
    display: none;
  }

  .nav a {
    padding: 8px 8px;
    font-size: 13px;
  }
}

@media (max-width: 720px) {
  .ham {
    display: grid;
    place-items: center;
  }

  .side .dl {
    display: none;
  }

  .nav {
    top: 68px;
    left: 0;
    right: 0;
    transform: none;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 18px;
    background: rgba(247, 248, 251, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .nav.open {
    display: flex;
  }

  .nav-dl {
    display: flex;
    margin-top: 8px;
    justify-content: center;
    min-height: 42px;
    background: var(--red);
    color: #fff !important;
    font-weight: 700;
    border-radius: 999px;
  }

  .truths,
  .scenes,
  .dls {
    grid-template-columns: 1fr;
  }
}