/* ============================================================
   FlowMate — 站点样式
   设计语言：黑白主调 + 单点绿，发丝线分割，无阴影（仅截图轻投影）
   ============================================================ */

:root {
  --ink: #111111;
  --ink-2: #18191c;
  --body: #5c5c61;
  --muted: #6e6e73;
  --faint: #9a9aa0;
  --faint-2: #a1a1a6;
  --line: #e4e4e4;
  --line-nav: #eaeaea;
  --line-soft: #ededed;
  --soft: #f7f7f7;
  --soft-2: #f5f5f5;
  --green: #16a34a;
  --green-deep: #128a3f;
  --green-soft: #f7fcf9;
  --green-line: #c7e7d3;

  --radius: 14px;
  --content: 1200px;
  --nav-h: 64px;

  --font: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: #d7f0e0;
  color: #0b3d22;
}

/* ---------- 布局 ---------- */

.wrap {
  width: min(var(--content), 100% - 48px);
  margin-inline: auto;
}

.section {
  padding-inline: 0;
}

/* ---------- 导航 ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line-nav);
}

.nav-inner {
  height: var(--nav-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
}

.mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: block;
  flex: none;
  object-fit: contain;
}

.brand-name {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  justify-self: center;
}

.nav-link {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s var(--ease);
  padding: 4px 0;
}

.nav-link::after {
  content: "";
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--green);
  transition: width 0.25s var(--ease);
}

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

.nav-link.is-active {
  color: var(--ink);
  font-weight: 550;
}

.nav-link.is-active::after {
  width: 18px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
  justify-self: end;
}

.lang {
  font-size: 13px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
}

.lang:hover {
  color: var(--ink);
}

/* 选择器需带 .btn：基础 .btn 声明在下方，同权重会被 height:46 覆盖 */
.btn.nav-cta {
  height: 34px;
  padding: 0 14px;
  font-size: 12.5px;
  gap: 8px;
}

.btn.nav-cta svg {
  width: 18px;
  height: 18px;
}

.burger {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  place-items: center;
  border: 1px solid var(--line);
}

.burger span {
  display: block;
  width: 15px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.burger span + span {
  margin-top: 5px;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease),
    border-color 0.2s var(--ease), color 0.2s var(--ease),
    box-shadow 0.25s var(--ease);
}

.btn svg {
  width: 20px;
  height: 20px;
  flex: none;
}

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

.btn-dark:hover {
  background: #000;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.5);
}

.btn-dark:active {
  transform: translateY(0);
}

.btn-line {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.btn-line:hover {
  border-color: #cfcfcf;
  background: var(--soft);
}

.btn-block {
  width: 100%;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--ink);
}

.link-arrow svg {
  width: 13px;
  height: 13px;
  transition: transform 0.22s var(--ease);
}

.link-arrow:hover svg {
  transform: translateX(3px);
}

.link-quiet {
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.link-quiet:hover {
  color: var(--ink);
  border-color: var(--ink);
}

.link-green {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--green);
}

.link-green svg {
  width: 12px;
  height: 12px;
  transition: transform 0.22s var(--ease);
}

.link-green:hover svg {
  transform: translateX(3px);
}

/* ---------- 通用文字 ---------- */

.eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--faint-2);
  text-transform: uppercase;
}

.head-2 {
  font-size: 26px;
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
}

.sub-2 {
  margin: 10px 0 0;
  font-size: 13.5px;
  color: var(--faint);
  line-height: 1.7;
}

.two-tone {
  font-size: clamp(32px, 4.4vw, 62px);
  line-height: 1.16;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin: 0;
}

.two-tone span {
  display: block;
}

.two-tone .dim {
  color: #b6b6ba;
}

/* ---------- 浏览器窗口 mockup ---------- */

.window {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03), 0 28px 56px -32px rgba(0, 0, 0, 0.24);
}

.win-bar {
  height: 34px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  background: var(--soft);
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}

.dot {
  width: 6.5px;
  height: 6.5px;
  border-radius: 50%;
  background: #dcdcde;
  flex: none;
}

.win-url {
  margin-left: 10px;
  width: min(320px, 38%);
  height: 20px;
  border-radius: 5px;
  background: #fff;
  border: 1px solid #eeeeef;
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-size: 10px;
  color: #a9a9ae;
  letter-spacing: 0.01em;
  overflow: hidden;
  white-space: nowrap;
}

.window img {
  width: 100%;
  height: auto;
}

/* 真窗口截图直出：图自带标题栏与圆角，不再套假浏览器框 */
.shot-plain {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04), 0 24px 50px -32px rgba(0, 0, 0, 0.3);
}

/* 图文块的截图轮播：首帧打底，其余帧叠在上面淡入 */
.shot-slides {
  position: relative;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04), 0 24px 50px -32px rgba(0, 0, 0, 0.3);
  transition: box-shadow 0.4s ease, transform 0.4s ease;
}

.shot-slides img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.shot-slides img + img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.shot-slides img + img.is-on {
  opacity: 1;
}

@media (hover: hover) and (min-width: 769px) {
  .shot-slides:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05), 0 34px 64px -32px rgba(0, 0, 0, 0.34);
  }
}

@media (prefers-reduced-motion: reduce) {
  .shot-slides,
  .shot-slides img + img {
    transition: none !important;
  }

  .shot-slides:hover {
    transform: none !important;
  }
}

/* ============================================================
   首页
   ============================================================ */

.hero {
  padding: 80px 0 88px;
  text-align: center;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  font-size: clamp(23px, 2.3vw, 30px);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero-brand img {
  width: 44px;
  height: 44px;
  display: block;
}

.hero-title {
  margin: 26px 0 0;
  font-size: clamp(32px, 3.7vw, 52px);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.hero-sub {
  margin: 18px auto 0;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.hero-cta {
  margin-top: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--faint-2);
  letter-spacing: 0.02em;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-meta i {
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #d5d5d8;
  display: none;
}

.hero-shot {
  margin-top: 56px;
}

/* 首页首图：原比例直出，图片自带窗口形态，仅补一层淡投影 */
.hero-slides {
  position: relative;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04), 0 24px 50px -32px rgba(0, 0, 0, 0.3);
}

.hero-slides img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

/* 第二帧叠在第一帧上，悬停轮播时交叉淡入 */
.hero-slides img + img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.hero-slides img + img.is-on {
  opacity: 1;
}

/* 桌面端：默认轻微 3D 后仰，悬停时回正、投影加深 */
@media (hover: hover) and (min-width: 769px) {
  .hero-shot {
    perspective: 1400px;
  }

  .hero-slides {
    transform: rotateX(7deg);
    transform-origin: 50% 100%;
    transition: transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.55s ease;
    will-change: transform;
  }

  .hero-shot:hover .hero-slides {
    transform: rotateX(0deg);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05), 0 34px 70px -34px rgba(0, 0, 0, 0.38);
  }
}

/* 用户偏好减少动效时直接静态展示 */
@media (prefers-reduced-motion: reduce) {
  .hero-slides {
    transform: none !important;
    transition: none !important;
  }
}

/* ---------- 六大能力 ---------- */

.collect {
  padding: 48px 0 96px;
}

.collect-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.collect-title {
  margin: 0;
  font-size: 25px;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.collect-sub {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--faint);
  line-height: 1.75;
  max-width: 340px;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  column-gap: 30px;
}

.tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 17px 0 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

.tab-head {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.tab svg {
  width: 15px;
  height: 15px;
  color: #3f3f46;
  flex: none;
}

.tab-arrow {
  width: 12px;
  height: 12px;
  color: var(--green);
  opacity: 1;
  transition: transform 0.22s var(--ease);
}

.tab:hover {
  color: #000;
}

.tab:hover .tab-arrow {
  transform: translate(2px, -2px);
}

/* ---------- 能力区大标题 ---------- */

.cap-head {
  padding: 120px 0 96px;
}

/* 能力区大标题两行统一墨黑，不做灰色弱化 */
.cap-head .two-tone .dim {
  color: var(--ink);
}

/* ---------- 图文交替 ---------- */

.feature {
  display: grid;
  grid-template-columns: minmax(0, 0.46fr) minmax(0, 1fr);
  gap: 80px;
  align-items: center;
  padding-bottom: 104px;
}

.feature.flip {
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.46fr);
}

.feature-text {
  max-width: 380px;
}

.feature-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.feature-label i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green);
}

.feature-title {
  margin: 16px 0 0;
  font-size: clamp(28px, 2.7vw, 37px);
  line-height: 1.34;
  font-weight: 600;
  letter-spacing: -0.025em;
  white-space: pre-line;
}

.feature-body {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.feature-link {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
  transition: border-color 0.2s, color 0.2s;
}

.feature-link:hover {
  border-color: var(--green);
  color: var(--green-deep);
}

/* 应用市场 mockup */

.market-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--line-soft);
}

.market-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.market-search {
  height: 28px;
  width: 168px;
  border-radius: 7px;
  background: var(--soft);
  border: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-size: 11px;
  color: var(--faint-2);
}

.market-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 18px 24px 0;
}

.app-card {
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  padding: 14px 14px 16px;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.app-card:hover {
  border-color: #d9d9dc;
  background: #fcfcfc;
}

.app-tile {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--soft-2);
  display: grid;
  place-items: center;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0;
}

.app-name {
  margin: 12px 0 0;
  font-size: 12.5px;
  font-weight: 550;
  color: var(--ink);
}

.app-desc {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--faint-2);
  line-height: 1.55;
}

.market-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px 20px;
  font-size: 11px;
  color: var(--faint-2);
}

.market-foot a {
  color: var(--muted);
}

.market-foot a:hover {
  color: var(--ink);
}

/* ---------- 用户评价 ---------- */

.testimonials {
  padding: 20px 0 104px;
}

.testi-head {
  margin-bottom: 56px;
}

.testi-head .eyebrow {
  margin-bottom: 18px;
}

.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.quote {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.quote-mark {
  font-size: 14px;
  letter-spacing: 0.1em;
  color: #c2c2c6;
  line-height: 1;
}

.quote-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--body);
}

.person {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
}

.avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid #dcdcdf;
  display: grid;
  place-items: center;
  font-size: 10px;
  color: var(--muted);
  flex: none;
}

.person-name {
  font-size: 12px;
  font-weight: 550;
  line-height: 1.4;
}

.person-role {
  font-size: 11px;
  color: var(--faint-2);
  line-height: 1.4;
}

/* ---------- 结尾 CTA ---------- */

.final-cta {
  padding: 104px 0 118px;
  text-align: center;
}

.cta-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: block;
  margin: 0 auto 22px;
}

.final-cta .eyebrow {
  margin-bottom: 20px;
}

.cta-title {
  margin: 0;
  font-size: clamp(32px, 3.5vw, 50px);
  line-height: 1.24;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.cta-row {
  margin-top: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-note {
  font-size: 13px;
  color: var(--faint);
}

.cta-note:hover {
  color: var(--ink);
}

/* ---------- 页脚 ---------- */

.footer {
  background: var(--soft);
  border-top: 1px solid #ececec;
  padding: 56px 0 26px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand p {
  margin: 0;
  max-width: 260px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--faint);
}

.footer-col h4 {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.footer-col a {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  padding: 5px 0;
  transition: color 0.18s;
}

.footer-col a:hover {
  color: var(--ink);
}

.footer-line {
  height: 1px;
  background: #e6e6e6;
}

.footer-bottom {
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 11.5px;
  color: var(--faint-2);
  flex-wrap: wrap;
}

/* ============================================================
   服务介绍
   ============================================================ */

.page-hero {
  padding: 96px 0 0;
  text-align: center;
}

.page-hero .two-tone {
  font-size: clamp(32px, 4vw, 56px);
}

/* 服务页页头标题两行统一为墨黑，不用灰色弱化 */
.page-hero .two-tone .dim {
  color: var(--ink);
}

.page-hero .sub-2 {
  margin-top: 22px;
  font-size: 13px;
  white-space: pre-line;
  color: var(--faint);
}

.ov-head {
  padding: 96px 0 0;
}

.ov-row {
  padding: 44px 0 96px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.ov-item {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.ov-num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--faint-2);
}

.ov-item.is-first .ov-num {
  color: var(--green);
}

.ov-title {
  margin: 14px 0 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.ov-desc {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.ov-link {
  margin-top: 18px;
  display: inline-flex;
  gap: 6px;
  font-size: 12.5px;
  color: var(--green);
}

.ov-link:hover {
  color: var(--green-deep);
}

/* 四步 */

.steps {
  padding: 0 0 96px;
}

.steps-head {
  margin-bottom: 40px;
}

.step-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.step {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.step.is-first {
  border-top-color: var(--green);
}

.step-num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--faint-2);
}

.step.is-first .step-num {
  color: var(--green);
}

.step-title {
  margin: 12px 0 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.step-desc {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--faint);
}

/* 数据条 */

.stats {
  background: var(--soft);
  border-top: 1px solid #efefef;
  border-bottom: 1px solid #efefef;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  padding: 46px 0;
}

.stat-value {
  font-size: clamp(24px, 2.4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.stat-label {
  margin-top: 8px;
  font-size: 12px;
  color: var(--faint);
}

/* 支持 */

.support {
  padding: 96px 0 0;
}

.sup-head {
  margin-bottom: 44px;
}

.sup-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 96px;
}

.sup-item {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.sup-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.sup-desc {
  margin: 9px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--faint);
}

/* FAQ */

.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.46fr) minmax(0, 1fr);
  gap: 80px;
  padding-bottom: 110px;
  align-items: start;
}

.faq-left h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.faq-left p {
  margin: 14px 0 0;
  max-width: 300px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--faint);
}

.faq-left a {
  color: var(--ink);
  border-bottom: 1px solid #d8d8d8;
}

.faq-item {
  border-top: 1px solid var(--line);
}

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

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.faq-icon {
  width: 14px;
  height: 14px;
  flex: none;
  position: relative;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--muted);
  border-radius: 2px;
  transition: transform 0.28s var(--ease), background 0.2s;
}

.faq-icon::before {
  left: 0;
  top: 6.25px;
  width: 14px;
  height: 1.5px;
}

.faq-icon::after {
  top: 0;
  left: 6.25px;
  width: 1.5px;
  height: 14px;
}

.faq-item.is-open .faq-icon::after {
  transform: rotate(90deg);
}

.faq-item.is-open .faq-icon::before {
  background: var(--green);
}

.faq-a {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.36s var(--ease);
}

.faq-a p {
  margin: 0;
  padding: 0 40px 22px 0;
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
}

/* ============================================================
   价格方案
   ============================================================ */

.pricing-hero {
  padding: 96px 0 0;
  text-align: center;
}

.pricing-hero h1 {
  margin: 0;
  font-size: clamp(30px, 3.4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.3;
}

.pricing-hero .sub-2 {
  margin-top: 14px;
  font-size: 13.5px;
}

.toggle-wrap {
  margin-top: 34px;
  display: flex;
  justify-content: center;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--soft);
  border: 1px solid #ececec;
  border-radius: 999px;
}

.seg {
  position: relative;
  height: 34px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: color 0.2s, background 0.2s, box-shadow 0.2s;
}

.seg.is-on {
  background: #fff;
  color: var(--ink);
  font-weight: 550;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.03);
}

.save {
  font-size: 10.5px;
  color: var(--green);
  background: #eefaf2;
  border-radius: 999px;
  padding: 1px 7px;
  letter-spacing: 0.01em;
}

.tiers {
  padding: 56px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.tier {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px 30px;
  display: flex;
  flex-direction: column;
  background: #fff;
  transition: border-color 0.2s var(--ease), transform 0.25s var(--ease);
}

.tier:hover {
  border-color: #d6d6d9;
}

.tier.is-pro {
  background: var(--green-soft);
  border-color: var(--green-line);
}

.tier.is-pro:hover {
  border-color: #a9d9ba;
}

.tier-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 24px;
}

.tier-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tag {
  font-size: 10.5px;
  color: var(--green-deep);
  background: #fff;
  border: 1px solid var(--green-line);
  border-radius: 999px;
  padding: 2px 9px;
  letter-spacing: 0.02em;
}

.tier-price {
  margin-top: 20px;
  display: flex;
  align-items: baseline;
  gap: 7px;
  flex-wrap: wrap;
}

.price-num {
  font-size: 38px;
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.price-unit {
  font-size: 12px;
  color: var(--faint);
}

.tier-desc {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--faint);
  line-height: 1.7;
  min-height: 21px;
}

.tier-btn {
  margin: 22px 0 26px;
}

.tier-btn .btn {
  height: 42px;
  font-size: 13.5px;
}

.tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.tier-list li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 12.5px;
  color: var(--body);
  line-height: 1.55;
}

.check {
  width: 13px;
  height: 13px;
  flex: none;
  margin-top: 3px;
  color: var(--green);
}

/* 对比表 */

.compare {
  padding: 76px 0 0;
}

.cmp-head {
  margin-bottom: 26px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  border-top: 1px solid var(--ink);
}

.table th {
  text-align: left;
  font-weight: 500;
  color: var(--muted);
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}

.table th:first-child,
.table td:first-child {
  width: 30%;
  color: var(--ink);
}

.table th:not(:first-child) {
  width: 23.33%;
}

.table td {
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--body);
}

.table tr:last-child td {
  border-bottom: 1px solid var(--line);
}

.table .pro-col {
  color: var(--green-deep);
  font-weight: 500;
}

/* 订阅须知 */

.notes {
  padding: 64px 0 96px;
}

.notes h3 {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.notes p {
  margin: 0 0 8px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--faint);
}

/* ============================================================
   下载弹窗 & 提示
   ============================================================ */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(17, 17, 17, 0.42);
  backdrop-filter: blur(3px);
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s var(--ease);
}

.overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.dialog {
  width: min(420px, 100%);
  background: #fff;
  border-radius: 16px;
  padding: 26px;
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.4);
  transform: translateY(8px) scale(0.99);
  transition: transform 0.26s var(--ease);
}

.overlay.is-open .dialog {
  transform: none;
}

.dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 6px;
}

.dialog h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.dialog-sub {
  margin: 0 0 20px;
  font-size: 12.5px;
  color: var(--faint);
  line-height: 1.7;
}

.dl-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 10px;
  transition: border-color 0.2s, background 0.2s;
  text-align: left;
}

.dl-option:hover {
  border-color: #cfcfd3;
  background: #fafafa;
}

.dl-os {
  display: block;
  font-size: 13.5px;
  font-weight: 550;
}

.dl-note {
  display: block;
  font-size: 11.5px;
  color: var(--faint-2);
  margin-top: 2px;
}

.dl-size {
  font-size: 11.5px;
  color: var(--faint);
  white-space: nowrap;
}

.dialog-foot {
  margin: 14px 0 0;
  font-size: 11px;
  color: var(--faint-2);
  line-height: 1.7;
}

.close-x {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  color: var(--muted);
  flex: none;
}

.close-x:hover {
  background: var(--soft);
  color: var(--ink);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 12px);
  background: var(--ink);
  color: #fff;
  font-size: 12.5px;
  padding: 11px 18px;
  border-radius: 999px;
  z-index: 120;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
  max-width: calc(100% - 40px);
  text-align: center;
}

.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 入场动画 ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 1080px) {
  .feature,
  .feature.flip,
  .faq {
    gap: 48px;
  }

  .feature {
    grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr);
  }

  .feature.flip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.55fr);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  :root {
    --nav-h: 60px;
  }

  .nav-inner {
    display: flex;
    justify-content: space-between;
  }

  .nav-links,
  .lang {
    display: none;
  }

  .burger {
    display: grid;
  }

  .nav-right {
    gap: 10px;
  }

  .nav.is-open .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 18px;
    background: #fff;
    border-bottom: 1px solid var(--line-nav);
  }

  .nav.is-open .nav-link {
    width: 100%;
    flex-direction: row;
    align-items: center;
    gap: 0;
    padding: 13px 0;
    font-size: 15px;
    border-bottom: 1px solid #f2f2f2;
  }

  .nav.is-open .nav-link::after {
    display: none;
  }

  .nav.is-open .nav-link.is-active {
    color: var(--green-deep);
  }

  .hero {
    padding: 56px 0 64px;
  }

  .collect-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .collect {
    padding: 40px 0 72px;
  }

  .collect-sub {
    max-width: 100%;
  }

  .cap-head {
    padding: 64px 0 56px;
  }

  .feature,
  .feature.flip {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 72px;
  }

  .feature-text {
    max-width: 100%;
  }

  .feature.flip .feature-visual {
    order: -1;
  }

  .testi-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .final-cta {
    padding: 88px 0 96px;
  }

  .ov-row,
  .step-row,
  .sup-row,
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 24px;
  }

  .faq {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .tiers {
    grid-template-columns: 1fr;
    gap: 16px;
    max-width: 480px;
    margin-inline: auto;
  }

  .table th:first-child,
  .table td:first-child {
    width: 32%;
  }

  .table {
    font-size: 12px;
  }
}

@media (max-width: 620px) {
  .wrap {
    width: calc(100% - 40px);
  }

  .hero-title {
    margin-top: 26px;
  }

  .hero-shot {
    margin-top: 36px;
  }

  .hero-cta {
    gap: 16px;
  }

  .hero-cta .btn {
    height: 44px;
  }

  .tabs {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 18px;
  }

  .tab {
    font-size: 13px;
  }

  .market-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 14px 14px 0;
  }

  .market-head,
  .market-foot {
    padding-inline: 14px;
  }

  .market-search {
    width: 120px;
  }

  .win-url {
    width: 46%;
    font-size: 9px;
  }

  .two-tone {
    font-size: clamp(28px, 8vw, 40px);
  }

  .ov-row,
  .step-row,
  .sup-row,
  .stats-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .ov-item,
  .sup-item {
    padding: 20px 0 22px;
  }

  .ov-row,
  .sup-row {
    gap: 0;
  }

  .step {
    padding: 16px 0 22px;
  }

  .stat {
    padding: 18px 0;
    border-top: 1px solid #e9e9e9;
  }

  .stats-row {
    padding: 12px 0 24px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 28px 24px;
  }

  .footer-bottom {
    font-size: 11px;
  }

  .table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .table {
    min-width: 520px;
  }

  .dialog {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* 括号内的枚举不拆行，避免右括号被挤到下一行 */
.nw {
  white-space: nowrap;
}