/* ══════════════════════════════════════════════════════════════
   Muses · 落地页
   以白为主。黑色只用在两处聚光灯区块——需要把产品或样例
   放到页面中心时，暗场让主体亮起来。
   蓝色是信号色，只用于当前状态、行动与强调。
   ══════════════════════════════════════════════════════════════ */

:root {
  color-scheme: light;

  --white: #ffffff;
  --paper: #fbfbfd;
  --grey: #f4f5f7;
  --ink: #10131a;
  --ink-2: #565e6d;
  /* 第三级灰：需在 #FFF / #FBFBFD / #F4F5F7 三种底上都达 4.5:1。
     原 #8A91A0 只有 2.9–3.16:1，偏浅。 */
  --ink-3: #666d7a;
  --line: #e4e7ec;

  --blue: #0a5fff;
  --blue-deep: #0038cc;
  --blue-wash: #eef4ff;
  /* 暗场上的小字蓝：#0A5FFF 在纯黑上仅 4.09:1，不达 4.5。 */
  --blue-lit: #4a8aff;

  --black: #05070b;
  --d-text: #f4f6fa;
  --d-text-2: #9aa3b4;
  --d-line: #232833;

  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --hd-h: 56px;
  --gut: 28px;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hd-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--blue);
  color: #fff;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--blue);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

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

/* ── 共用排印 ───────────────────────────────────────── */

h2 {
  font-size: clamp(28px, 4.1vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.032em;
  font-weight: 700;
  margin: 0 0 22px;
}

h3 {
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.4;
  letter-spacing: -0.018em;
  margin: 0 0 6px;
  font-weight: 650;
}

p {
  margin: 0 0 14px;
}

.eyebrow,
.spot-eye {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--blue);
  margin: 0 0 18px;
}

.lead {
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 1.72;
  color: var(--ink-2);
  max-width: 56ch;
  margin: 0 0 28px;
}

/* ── 滚动入场 ───────────────────────────────────────── */

.js .r {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.js .r.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .js .r {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ══ 顶栏 ═══════════════════════════════════════════════ */

.hd {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--hd-h);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 var(--gut);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

@supports (backdrop-filter: blur(1px)) {
  .hd {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: saturate(180%) blur(20px);
  }
}

.hd.is-stuck {
  border-bottom-color: var(--line);
}

.hd-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.01em;
  flex: none;
}

.hd-brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.hd-nav {
  display: flex;
  gap: 26px;
  margin-left: auto;
  font-size: 14.5px;
  color: var(--ink-2);
}

.hd-nav a {
  transition: color 0.2s;
}

.hd-nav a:hover {
  color: var(--ink);
}

.hd-cta {
  flex: none;
  font-size: 14.5px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  transition: background 0.2s;
}

.hd-cta:hover {
  background: var(--blue-deep);
}

.hd-menu {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: 0;
  position: relative;
  cursor: pointer;
}

.hd-menu span[aria-hidden] {
  position: absolute;
  left: 10px;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease);
}

.hd-menu span[aria-hidden]:first-of-type {
  top: 17px;
}

.hd-menu span[aria-hidden]:last-of-type {
  top: 23px;
}

.hd-menu[aria-expanded="true"] span:first-of-type {
  transform: translateY(3px) rotate(45deg);
}

.hd-menu[aria-expanded="true"] span:last-of-type {
  transform: translateY(-3px) rotate(-45deg);
}

.m-nav {
  position: fixed;
  inset: var(--hd-h) 0 auto;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--line);
  padding: 8px var(--gut) 20px;
}

.m-nav[hidden] {
  display: none;
}

.m-nav a {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

.m-nav a:last-child {
  border-bottom: 0;
  color: var(--blue);
  font-weight: 600;
}

@media (max-width: 860px) {
  .hd-nav,
  .hd-cta {
    display: none;
  }
  .hd-menu {
    display: block;
  }
}

/* ══ 01 首屏 ════════════════════════════════════════════ */

.hero {
  position: relative;
  min-height: 92svh;
  display: flex;
  align-items: center;
  padding: calc(var(--hd-h) + 64px) var(--gut) 100px;
  overflow: hidden;
}

/* 极淡的暖白光，让首屏不是死平的纯白 */
.hero::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -34vh;
  width: min(140vw, 1300px);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--blue-wash) 0%, transparent 62%);
  pointer-events: none;
}

.hero-in {
  position: relative;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
}

.hero-h {
  font-size: clamp(34px, 6.2vw, 76px);
  line-height: 1.1;
  letter-spacing: -0.04em;
  font-weight: 700;
  margin: 0 0 26px;
  max-width: 20ch;
}

.hero-h span {
  display: block;
}

.hero-h span:nth-child(2) {
  transition-delay: 0.1s;
}

.hero-h b {
  font-weight: 700;
  color: var(--blue);
}

.hero-sub {
  font-size: clamp(16px, 1.45vw, 20px);
  line-height: 1.7;
  color: var(--ink-2);
  max-width: 46ch;
  margin: 0 0 34px;
  transition-delay: 0.18s;
}

.hero-act {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  transition-delay: 0.26s;
}

.btn {
  display: inline-flex;
  align-items: center;
  font-size: 16px;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 10px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

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

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

.btn-p:hover {
  background: var(--blue-deep);
}

.btn-s {
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn-s:hover {
  border-color: var(--ink-3);
}

.hero-note {
  font-size: 14px;
  color: var(--ink-3);
  margin: 0;
  transition-delay: 0.34s;
}

.hero-down {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 13px;
  display: grid;
  place-items: center;
}

.hero-down span {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--blue);
  animation: hint 1.9s var(--ease) infinite;
}

@keyframes hint {
  0%,
  100% {
    transform: translateY(-7px);
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  70% {
    transform: translateY(7px);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-down span {
    animation: none;
    opacity: 1;
  }
}

/* ══ 02 痛点 ════════════════════════════════════════════ */

.pain {
  padding: 100px 0;
}

.pain h2 {
  margin-bottom: 40px;
}

.pain-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  border-radius: 14px;
  overflow: hidden;
  background: var(--line);
}

.pain-list li {
  background: var(--paper);
  padding: 30px 32px;
}

.pain-list li:nth-child(2) {
  transition-delay: 0.07s;
}
.pain-list li:nth-child(3) {
  transition-delay: 0.14s;
}
.pain-list li:nth-child(4) {
  transition-delay: 0.21s;
}

.pain-list p {
  margin: 0;
  font-size: 15.5px;
  color: var(--ink-2);
}

.pain-end {
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.45;
  letter-spacing: -0.024em;
  font-weight: 650;
  margin: 0;
  max-width: 30ch;
}

@media (max-width: 780px) {
  .pain-list {
    grid-template-columns: 1fr;
  }
  .pain-list li {
    padding: 24px 22px;
  }
}

/* ══ 03 · 06 聚光灯（黑）════════════════════════════════
   全站唯一的两处暗场。作用是把产品或样例放到页面中心，
   让主体从暗底里亮起来。 */

.spot {
  position: relative;
  background: var(--black);
  color: var(--d-text);
  padding: 110px 0;
  overflow: hidden;
}

/* 聚光：从上方打下来的一束光 */
.spot::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -46%;
  width: min(120vw, 1000px);
  aspect-ratio: 1 / 0.9;
  transform: translateX(-50%);
  background: radial-gradient(
    ellipse at center,
    rgba(255, 255, 255, 0.13) 0%,
    rgba(255, 255, 255, 0.04) 42%,
    transparent 70%
  );
  pointer-events: none;
}

.spot-in {
  position: relative;
  text-align: center;
}

.spot-eye {
  color: var(--blue-lit);
}

.spot h2 {
  margin: 0 auto 48px;
  max-width: 24ch;
}

.spot-note {
  margin: 26px 0 0;
  font-size: 15px;
  color: var(--d-text-2);
}

.ph {
  display: inline-block;
  font-style: normal;
  font-size: 13px;
  padding: 3px 10px;
  margin-left: 4px;
  border-radius: 6px;
  border: 1px dashed var(--d-line);
  color: var(--d-text-2);
}

/* 前后对照台 */
.stage {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 26px;
  align-items: center;
  max-width: 780px;
  margin: 0 auto;
}

.stage-k {
  display: block;
  font-size: 13.5px;
  color: var(--d-text-2);
  margin-bottom: 12px;
}

.stage-box {
  aspect-ratio: 3 / 4;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 14.5px;
  text-align: center;
  padding: 16px;
}

.stage-box.is-before {
  background: #0d1119;
  border: 1px solid var(--d-line);
  color: var(--d-text-2);
}

/* 聚光落在「结果」那一侧 */
.stage-box.is-after {
  background: #101725;
  border: 1px solid rgba(74, 138, 255, 0.5);
  color: var(--d-text);
  box-shadow: 0 0 0 1px rgba(74, 138, 255, 0.12), 0 20px 60px rgba(10, 95, 255, 0.22);
}

.stage-arrow {
  display: grid;
  place-items: center;
  padding-top: 26px;
}

.stage-arrow span {
  width: 34px;
  height: 1px;
  background: linear-gradient(90deg, var(--d-line), var(--blue-lit));
  position: relative;
}

.stage-arrow span::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--blue-lit);
  border-right: 1px solid var(--blue-lit);
  transform: rotate(45deg);
}

@media (max-width: 700px) {
  .stage {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .stage-box {
    aspect-ratio: 16 / 10;
  }
  .stage-arrow {
    padding: 0;
    transform: rotate(90deg);
  }
}

/* 内容包样例（第二处聚光灯） */
.pack {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 30px;
  max-width: 800px;
  margin: 0 auto;
  padding: 30px;
  border-radius: 16px;
  background: #0c1017;
  border: 1px solid var(--d-line);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
  text-align: left;
}

.pack-media {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.pack-img,
.pack-vid {
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 13px;
  color: var(--d-text-2);
}

.pack-img {
  width: 132px;
  aspect-ratio: 3 / 4;
  background: #131a26;
  border: 1px solid rgba(74, 138, 255, 0.45);
  box-shadow: 0 12px 34px rgba(10, 95, 255, 0.18);
}

.pack-vid {
  width: 66px;
  aspect-ratio: 3 / 4;
  background: #101520;
  border: 1px solid var(--d-line);
}

.pack-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.pack-k {
  display: block;
  font-size: 12.5px;
  color: var(--d-text-2);
  margin-bottom: 8px;
}

.pack-titles p {
  margin: 0 0 6px;
  font-size: 14px;
  padding: 7px 11px;
  border-radius: 7px;
  background: #101520;
  border: 1px solid var(--d-line);
  color: var(--d-text-2);
}

.pack-titles p.is-picked {
  border-color: var(--blue-lit);
  color: var(--d-text);
  background: rgba(10, 95, 255, 0.14);
}

/* 正文用灰条示意，不写假文案 */
.pack-body p {
  height: 7px;
  margin: 0 0 8px;
  border-radius: 4px;
  background: #1a2130;
}

.pack-body p.short {
  width: 52%;
}

.pack-tags div {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.pack-tags i {
  display: block;
  width: 58px;
  height: 20px;
  border-radius: 999px;
  background: #141b28;
  border: 1px solid var(--d-line);
}

.pack-tags i:nth-child(2) {
  width: 46px;
}
.pack-tags i:nth-child(4) {
  width: 70px;
}
.pack-tags i:nth-child(5) {
  width: 40px;
}

@media (max-width: 700px) {
  .pack {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 22px;
  }
  .pack-media {
    justify-content: center;
  }
}

/* ══ 04 能帮你什么 ══════════════════════════════════════ */

.does {
  padding: 100px 0;
}

.does h2 {
  margin-bottom: 40px;
}

/* 6 列基座：前两项（图与动图）各占 3 列并排，后三项各占 2 列并排。
   每个 li 内部是普通流式布局，不再套网格——套了会让第三个
   子元素折进窄列，右侧留出大片空白。 */
.give {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.give li {
  padding: 26px 24px 28px;
  border-radius: 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  grid-column: span 2;
}

/* 图与动图是视觉主角：更大占比、浅蓝底，右侧带一个竖版画幅
   占位把卡片撑起来——3:4 是实际的出图比例。 */
.give li:nth-child(1),
.give li:nth-child(2) {
  grid-column: span 3;
  background: var(--blue-wash);
  border-color: rgba(10, 95, 255, 0.2);
  padding: 30px;
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.give-txt {
  min-width: 0;
}

.give-vis {
  flex: none;
}

.vis-frame {
  display: block;
  width: 84px;
  aspect-ratio: 3 / 4;
  border-radius: 9px;
  background: var(--white);
  border: 1px solid rgba(10, 95, 255, 0.28);
  box-shadow: 0 6px 20px rgba(10, 95, 255, 0.12);
  position: relative;
}

/* 动图那张：中间一个播放三角，暗示会动 */
.vis-video i {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 0;
  border-left: 12px solid var(--blue);
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  margin-left: 2px;
}

.give li:nth-child(2) {
  transition-delay: 0.07s;
}
.give li:nth-child(3) {
  transition-delay: 0.14s;
}
.give li:nth-child(4) {
  transition-delay: 0.18s;
}
.give li:nth-child(5) {
  transition-delay: 0.22s;
}

.give-n {
  display: block;
  font-size: 15px;
  font-weight: 650;
  color: var(--blue-deep);
  margin-bottom: 6px;
}

.give li:nth-child(1) .give-n,
.give li:nth-child(2) .give-n {
  font-size: 15px;
}

.give li:nth-child(1) h3,
.give li:nth-child(2) h3 {
  font-size: clamp(20px, 2.1vw, 25px);
}

.give p {
  margin: 0;
  font-size: 15.5px;
  color: var(--ink-2);
  max-width: 34ch;
}

.does-end {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--ink-2);
  margin: 0;
  max-width: 46ch;
}

.does-end b {
  color: var(--ink);
  font-weight: 650;
}

/* 窄到主角卡放不下并排的图文时，画幅占位先撤，让文字拿回宽度。
   比留着一个把正文挤成窄柱的装饰更划算。 */
@media (max-width: 1000px) {
  .give-vis {
    display: none;
  }
  .give li:nth-child(1),
  .give li:nth-child(2) {
    display: block;
    padding: 26px 24px 28px;
  }
}

/* 中屏：主角各占半行，三个小项各占 1/3，刚好均分不留空卡 */
@media (max-width: 860px) {
  .give {
    grid-template-columns: repeat(6, 1fr);
  }
  .give li:nth-child(1),
  .give li:nth-child(2) {
    grid-column: span 3;
  }
  .give li:nth-child(n + 3) {
    grid-column: span 2;
  }
  .give p {
    max-width: none;
  }
}

/* 小屏：主角各占整行，三个小项仍并排 */
@media (max-width: 680px) {
  .give li:nth-child(1),
  .give li:nth-child(2) {
    grid-column: span 6;
  }
}

/* 手机：全部单列 */
@media (max-width: 520px) {
  .give {
    grid-template-columns: 1fr;
  }
  .give li,
  .give li:nth-child(1),
  .give li:nth-child(2),
  .give li:nth-child(n + 3) {
    grid-column: auto;
    padding: 22px 22px 24px;
  }
}

/* ══ 05 四步 ════════════════════════════════════════════ */

.how {
  padding: 0 0 100px;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.steps li {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 22px;
  border-top: 2px solid var(--line);
}

.steps li:nth-child(1) {
  border-top-color: var(--blue);
}
.steps li:nth-child(2) {
  transition-delay: 0.08s;
}
.steps li:nth-child(3) {
  transition-delay: 0.16s;
}
.steps li:nth-child(4) {
  transition-delay: 0.24s;
}

.step-n {
  font-size: 13px;
  font-weight: 650;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--blue);
  color: #fff;
  flex: none;
}

.steps li:not(:first-child) .step-n {
  background: var(--grey);
  color: var(--ink-2);
}

.steps p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-2);
}

@media (max-width: 860px) {
  .steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .steps {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

/* ══ 07 货不对板 ════════════════════════════════════════ */

.trust {
  padding: 100px 0;
}

.trust-in {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 54px;
  align-items: start;
}

.trust-copy p {
  font-size: 16.5px;
  color: var(--ink-2);
  max-width: 52ch;
}

.trust-key {
  font-size: clamp(18px, 1.9vw, 22px) !important;
  line-height: 1.5;
  letter-spacing: -0.02em;
  font-weight: 650;
  color: var(--ink) !important;
  padding: 18px 22px;
  border-radius: 12px;
  background: var(--blue-wash);
  border-left: 3px solid var(--blue);
  margin: 0 0 18px;
}

.trust-checks {
  list-style: none;
  margin: 0;
  padding: 22px 24px;
  border-radius: 14px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.trust-checks li {
  position: relative;
  padding: 11px 0 11px 28px;
  font-size: 15.5px;
  border-bottom: 1px solid var(--line);
}

.trust-checks li:last-child {
  border-bottom: 0;
}

.trust-checks li:nth-child(2) {
  transition-delay: 0.08s;
}
.trust-checks li:nth-child(3) {
  transition-delay: 0.16s;
}

.trust-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--blue);
}

.trust-checks li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 23px;
  width: 7px;
  height: 4px;
  border-left: 1.5px solid #fff;
  border-bottom: 1.5px solid #fff;
  transform: rotate(-45deg);
}

@media (max-width: 860px) {
  .trust-in {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ══ 08 用完的变化 ══════════════════════════════════════ */

.change {
  padding: 0 0 100px;
}

.ba {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
}

.ba li {
  display: grid;
  grid-template-columns: 1fr 56px 1fr;
  gap: 18px;
  align-items: center;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.ba li:last-child {
  border-bottom: 1px solid var(--line);
}

.ba li:nth-child(2) {
  transition-delay: 0.09s;
}
.ba li:nth-child(3) {
  transition-delay: 0.18s;
}

.ba-before {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--ink-3);
  text-align: right;
}

.ba-after {
  font-size: clamp(17px, 1.9vw, 23px);
  font-weight: 650;
  letter-spacing: -0.022em;
  color: var(--ink);
}

.ba-arrow {
  height: 1px;
  background: linear-gradient(90deg, var(--line), var(--blue));
  position: relative;
}

.ba-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-top: 1.5px solid var(--blue);
  border-right: 1.5px solid var(--blue);
  transform: rotate(45deg);
}

.change-end {
  font-size: 16.5px;
  color: var(--ink-2);
  max-width: 54ch;
  margin: 0;
}

.change-end b {
  color: var(--ink);
  font-weight: 650;
}

@media (max-width: 700px) {
  .ba li {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .ba-before {
    text-align: left;
  }
  .ba-arrow {
    width: 1px;
    height: 20px;
    background: linear-gradient(180deg, var(--line), var(--blue));
    margin-left: 8px;
  }
  .ba-arrow::after {
    right: -3px;
    top: auto;
    bottom: 0;
    transform: rotate(135deg);
  }
}

/* ══ 09 几句实话 ════════════════════════════════════════ */

.plain {
  padding: 90px 0;
  background: var(--grey);
}

.plain h2 {
  margin-bottom: 34px;
}

.facts {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--line);
}

.facts > div {
  background: var(--white);
  padding: 24px 26px;
}

.facts > div:nth-child(2) {
  transition-delay: 0.07s;
}
.facts > div:nth-child(3) {
  transition-delay: 0.14s;
}
.facts > div:nth-child(4) {
  transition-delay: 0.21s;
}

.facts dt {
  font-size: 16.5px;
  font-weight: 650;
  letter-spacing: -0.015em;
  margin-bottom: 5px;
}

.facts dd {
  margin: 0;
  font-size: 15px;
  color: var(--ink-2);
}

@media (max-width: 700px) {
  .facts {
    grid-template-columns: 1fr;
  }
}

/* ══ 10 申请 ════════════════════════════════════════════ */

.apply {
  padding: 0 0 100px;
  background: var(--grey);
}

.apply-in {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 56px;
  align-items: center;
  padding: 44px;
  border-radius: 18px;
  background: var(--white);
  border: 1px solid var(--line);
}

.conds {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 42ch;
}

.conds li {
  position: relative;
  padding: 10px 0 10px 22px;
  font-size: 15.5px;
  border-bottom: 1px solid var(--line);
}

.conds li:last-child {
  border-bottom: 0;
}

.conds li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 9px;
  height: 1.5px;
  background: var(--blue);
}

.qr {
  text-align: center;
  transition-delay: 0.14s;
}

.qr img {
  width: 220px;
  height: 220px;
  padding: 12px;
  border-radius: 14px;
  background: var(--white);
  border: 1px solid var(--line);
}

/* 二维码尚未放入时的诚实占位 */
.qr-slot {
  width: 220px;
  height: 220px;
  border-radius: 14px;
  border: 1px dashed var(--line);
  background: var(--paper);
  display: grid;
  place-content: center;
  gap: 8px;
  padding: 16px;
  text-align: center;
}

.qr-slot span {
  font-size: 14px;
  color: var(--ink-2);
}

.qr-slot code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--blue-deep);
  word-break: break-all;
}

.qr-slot .qr-todo {
  font-size: 13px;
  color: var(--ink-3);
}

.qr > p {
  margin: 14px 0 0;
  font-size: 14.5px;
  color: var(--ink-2);
}

@media (max-width: 860px) {
  .apply-in {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 30px 24px;
  }
  .qr {
    justify-self: start;
  }
}

/* ══ 页脚 ═══════════════════════════════════════════════ */

.ft {
  padding: 36px 0 52px;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.ft-in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 32px;
}

.ft-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}

.ft-brand img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.ft-note {
  margin: 0;
  flex: 1 1 380px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-3);
}

.ft-links {
  display: flex;
  gap: 20px;
  font-size: 14px;
  color: var(--ink-2);
}

.ft-links a:hover {
  color: var(--ink);
}

/* ══ 小屏统一收紧 ═══════════════════════════════════════ */

@media (max-width: 700px) {
  :root {
    --gut: 20px;
  }
  body {
    font-size: 16px;
  }
  .pain,
  .does,
  .trust,
  .plain,
  .spot {
    padding-top: 68px;
    padding-bottom: 68px;
  }
  .how,
  .change,
  .apply {
    padding-bottom: 68px;
  }
}