:root {
  --brand: #28b894;
  --brand-hover: #22a683;
  --brand-bright: #32e6b9;
  --mint: #eef9f7;
  --purple: #6c4dff;
  --ink: #191a23;
  --text: #1a1a1a;
  --muted: #666666;
  --muted-2: #858699;
  --bg: #f3f6f5;
  --card: #ffffff;
  --line: #e4e9ee;
  --shadow-green: 0 12px 32px rgba(40, 184, 148, 0.18), 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-btn: 0 8px 24px rgba(40, 184, 148, 0.35);
  --shadow-mega: 0 24px 70px rgba(25, 26, 35, 0.07), 0 2px 10px rgba(25, 26, 35, 0.04);
  --radius-card: 16px;
  --radius-mega: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* 锚点跳转时避开浮动导航 */
section[id],
footer.site-footer {
  scroll-margin-top: 96px;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
}

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

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

button,
input,
textarea {
  font: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3,
.logo,
.btn,
.pill {
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

h1 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: clamp(40px, 6.4vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 12px;
  color: var(--ink);
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.03em;
}

h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 19px;
  line-height: 1.35;
}

p {
  color: var(--muted);
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  width: min(860px, calc(100% - 40px));
}

/* ---------- 滚动渐入动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s ease, transform 0.65s ease;
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

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

/* ---------- 浮动胶囊导航 ---------- */
.site-header {
  position: sticky;
  top: 12px;
  z-index: 50;
  padding-top: 12px;
}

.nav {
  position: relative;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 6px 10px 6px 18px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(228, 233, 238, 0.9);
  border-radius: 999px;
  backdrop-filter: blur(16px);
  box-shadow: 0 6px 24px rgba(25, 26, 35, 0.06);
  transition: box-shadow 0.3s ease;
}

.site-header.is-scrolled .nav {
  box-shadow: 0 12px 34px rgba(25, 26, 35, 0.12);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-full {
  display: block;
  height: 44px;
  width: auto;
}

.footer-logo .logo-full {
  height: 40px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #333;
  font-size: 15px;
}

.nav-menu a:not(.btn) {
  position: relative;
  padding: 4px 0;
}

.nav-menu a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transition: width 0.25s ease;
}

.nav-menu a:not(.btn):hover {
  color: var(--brand);
}

.nav-menu a:not(.btn):hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
  border-radius: 2px;
}

/* ---------- 按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 26px;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
}

.btn:hover::after {
  left: 120%;
}

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

.btn-primary:hover {
  background: var(--brand-hover);
  box-shadow: var(--shadow-btn);
  transform: translateY(-2px);
}

.btn-ghost {
  color: var(--ink);
  background: #fff;
  border-color: rgba(40, 184, 148, 0.35);
}

.btn-ghost:hover {
  color: var(--brand-hover);
  border-color: var(--brand);
  background: var(--mint);
  transform: translateY(-2px);
}

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

.btn-light:hover {
  color: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.btn-small {
  min-height: 38px;
  padding: 0 18px;
  font-size: 14px;
}

.pill,
.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 14px;
  color: var(--brand-hover);
  background: rgba(40, 184, 148, 0.1);
  border: 1px solid rgba(40, 184, 148, 0.18);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.eyebrow-light {
  color: var(--brand-bright);
  background: rgba(50, 230, 185, 0.12);
  border-color: rgba(50, 230, 185, 0.3);
}

.pill-pulse {
  animation: badgePulse 2s ease-in-out infinite;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 40px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(40, 184, 148, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 184, 148, 0.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}

.hero-orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  animation: orbFloat 14s ease-in-out infinite;
}

.orb-a {
  top: -60px;
  left: 8%;
  width: 260px;
  height: 260px;
  background: rgba(40, 184, 148, 0.3);
}

.orb-b {
  top: 30%;
  right: 4%;
  width: 220px;
  height: 220px;
  background: rgba(108, 77, 255, 0.18);
  animation-delay: -4s;
}

.orb-c {
  bottom: -60px;
  left: 42%;
  width: 200px;
  height: 200px;
  background: rgba(50, 230, 185, 0.22);
  animation-delay: -8s;
}

.hero-inner {
  position: relative;
  display: grid;
  justify-items: center;
  text-align: center;
}

.pill-brand {
  gap: 9px;
  min-height: 38px;
  padding-left: 9px;
  padding-right: 18px;
  font-size: 14px;
}

.pill-brand img {
  width: 25px;
  height: 25px;
  border-radius: 7px;
}

.grad {
  background: linear-gradient(92deg, var(--brand) 10%, var(--brand-bright) 45%, var(--purple) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
}

.type-line {
  min-height: 42px;
  margin-bottom: 16px;
  color: var(--brand-hover);
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 900;
}

.caret {
  display: inline-block;
  width: 3px;
  height: 1em;
  margin-left: 4px;
  vertical-align: -0.12em;
  background: var(--brand);
  animation: caretBlink 0.9s steps(1) infinite;
}

.hero-desc {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: 17px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}

.hero-badges span {
  padding: 9px 14px;
  color: #333;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  backdrop-filter: blur(6px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* Hero 内嵌数据条（无边框，分隔线） */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(920px, 100%);
  margin-top: 64px;
  padding-top: 34px;
  border-top: 1px solid rgba(228, 233, 238, 0.9);
}

.hstat {
  padding: 0 12px;
  text-align: center;
}

.hstat + .hstat {
  border-left: 1px solid var(--line);
}

.hstat strong {
  display: block;
  color: var(--ink);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.15;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.hstat strong span {
  background: linear-gradient(92deg, var(--brand-hover), var(--brand-bright));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hstat > span {
  color: var(--muted);
  font-size: 13px;
}

/* ---------- 产品界面示意 ---------- */
.app-section {
  padding: 30px 0 10px;
}

.app-window {
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(40, 184, 148, 0.18);
  border-radius: 20px;
  box-shadow: var(--shadow-mega);
}

.app-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  background: #fbfbfb;
  border-bottom: 1px solid var(--line);
}

.traffic {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.traffic-red { background: #ff5f57; }
.traffic-yellow { background: #febc2e; }
.traffic-green { background: #28c840; }

.app-title {
  margin-left: 8px;
  color: var(--muted-2);
  font-size: 13px;
}

.app-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 560px;
}

.app-sidebar {
  padding: 16px;
  background: #fbfbfb;
  border-right: 1px solid var(--line);
}

.side-new {
  width: 100%;
  min-height: 38px;
  margin-bottom: 14px;
  color: #fff;
  background: var(--brand);
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
}

.side-item {
  display: block;
  padding: 9px 10px;
  margin-bottom: 4px;
  color: #333;
  border-radius: 8px;
  cursor: pointer;
}

.side-item:hover,
.side-item.active {
  color: var(--brand-hover);
  background: rgba(40, 184, 148, 0.1);
}

.side-recent {
  display: grid;
  gap: 8px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted-2);
  font-size: 13px;
}

.side-recent strong {
  color: var(--ink);
  font-size: 13px;
}

.app-main {
  padding: 18px;
}

.task-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.task-tab {
  min-height: 34px;
  padding: 0 12px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.task-tab.active {
  color: var(--brand-hover);
  background: var(--mint);
  border-color: rgba(40, 184, 148, 0.28);
}

.tool-list {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

.tool-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.tool-item p {
  margin: 2px 0 0;
  font-size: 13px;
}

.tool-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  color: var(--brand-hover);
  background: var(--mint);
  border-radius: 8px;
  font-weight: 900;
}

.tool-status {
  padding: 4px 8px;
  color: #067647;
  background: #dcfae6;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.tool-status-active {
  color: #b54708;
  background: #fffaeb;
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.artifact-card {
  padding: 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.artifact-card p {
  margin: 8px 0 0;
  font-size: 13px;
}

.artifact-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.diff {
  padding: 2px 6px;
  border-radius: 6px;
  font-family: "SF Mono", Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
}

.diff-add {
  color: #067647;
  background: #dcfae6;
}

.diff-del {
  color: #b42318;
  background: #fee4e2;
}

.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.composer-input {
  color: var(--muted-2);
  padding: 8px 12px;
}

.composer-send {
  width: 40px;
  height: 40px;
  color: #fff;
  background: var(--brand);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  font-weight: 900;
}

.disclaimer {
  margin: 10px 0 0;
  color: var(--muted-2);
  font-size: 12px;
  text-align: center;
}

/* ---------- 通用区块 ---------- */
.section {
  padding: 44px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 38px;
}

.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading p {
  font-size: 16px;
}

/* 圆角大卡容器 */
.mega-card {
  padding: clamp(30px, 5vw, 56px);
  background: var(--card);
  border: 1px solid rgba(228, 233, 238, 0.85);
  border-radius: var(--radius-mega);
  box-shadow: var(--shadow-mega);
}

/* ---------- Bento 功能网格 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  grid-column: span 2;
  padding: 26px 24px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(40, 184, 148, 0.45);
  box-shadow: var(--shadow-green);
}

.feature-card p {
  margin-bottom: 0;
  font-size: 14px;
}

.feature-card-wide {
  grid-column: span 4;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 22px;
  align-items: center;
  background:
    radial-gradient(circle at 100% 0%, rgba(40, 184, 148, 0.12), transparent 46%),
    var(--bg);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  color: var(--brand-hover);
  background: #fff;
  border: 1px solid rgba(40, 184, 148, 0.22);
  border-radius: 14px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.bento-demo {
  display: grid;
  gap: 10px;
  align-content: center;
}

.bubble {
  max-width: 94%;
  padding: 11px 15px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.5;
}

.bubble-user {
  justify-self: end;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-bottom-right-radius: 4px;
}

.bubble-bot {
  justify-self: start;
  color: var(--brand-hover);
  background: var(--mint);
  border: 1px solid rgba(40, 184, 148, 0.28);
  border-bottom-left-radius: 4px;
  font-weight: 700;
}

/* ---------- 场景卡片 ---------- */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.scenario-card {
  padding: 24px;
  background: linear-gradient(#fff, #fff) padding-box,
    linear-gradient(160deg, rgba(40, 184, 148, 0.35), rgba(40, 184, 148, 0.05) 45%, rgba(108, 77, 255, 0.18)) border-box;
  border: 1.5px solid transparent;
  border-radius: 18px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scenario-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-green);
}

.scenario-card ul {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}

.scenario-card li {
  color: var(--muted);
  font-size: 14px;
}

.scenario-card li span {
  display: block;
  margin-bottom: 2px;
  color: var(--brand-hover);
  font-weight: 900;
}

.scenario-card li span::before {
  content: "· ";
}

.scenario-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  color: var(--brand-hover);
  background: var(--mint);
  border: 1px solid rgba(40, 184, 148, 0.25);
  border-radius: 14px;
}

.scenario-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.policies-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.more-note {
  margin: 26px 0 0;
  color: var(--muted-2);
  text-align: center;
}

/* ---------- 工作流程：时间线 ---------- */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  padding: 0;
  margin: 0 0 56px;
  list-style: none;
}

.step {
  position: relative;
  padding: 0 10px;
  text-align: center;
}

.step::before {
  content: "";
  position: absolute;
  top: 22px;
  left: calc(-50% - 12px);
  width: calc(100% + 24px);
  border-top: 2px dashed rgba(40, 184, 148, 0.35);
}

.step:first-child::before {
  display: none;
}

.step h3 {
  font-size: 18px;
}

.step p {
  margin-bottom: 0;
  font-size: 14px;
}

.step-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-hover));
  border: 4px solid var(--bg);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 900;
  box-shadow: 0 6px 16px rgba(40, 184, 148, 0.3);
}

/* ---------- 服务保障：无边框图标行 ---------- */
.assure-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.assure-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.assure-item h3 {
  margin-bottom: 4px;
  font-size: 17px;
}

.assure-item p {
  margin-bottom: 0;
  font-size: 13px;
}

.voice-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  color: var(--brand-hover);
  background: var(--mint);
  border: 1px solid rgba(40, 184, 148, 0.2);
  border-radius: 12px;
}

.voice-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 定价 ---------- */
.pricing {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.price-card:hover {
  transform: translateY(-5px);
  border-color: rgba(40, 184, 148, 0.45);
  box-shadow: var(--shadow-green);
}

.price-card-featured {
  background: #fff;
  border-color: rgba(40, 184, 148, 0.55);
  box-shadow: var(--shadow-green);
  transform: translateY(-8px);
}

.price-card-featured:hover {
  transform: translateY(-12px);
}

.plan-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 5px 10px;
  color: #fff;
  background: var(--ink);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
}

.price-desc {
  margin-bottom: 0;
}

.price {
  margin: 24px 0 18px;
  color: var(--ink);
  font-size: 52px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.price span {
  font-size: 24px;
  vertical-align: 12px;
}

.price small {
  color: var(--muted-2);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0;
}

.plan-features {
  display: grid;
  gap: 11px;
  padding: 0;
  margin: 0 0 24px;
  list-style: none;
}

.plan-features li {
  position: relative;
  padding-left: 24px;
  color: var(--muted);
  font-size: 14px;
}

.plan-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 900;
}

.price-card .btn {
  width: 100%;
  margin-top: auto;
}

/* 支付方式 chips（并入定价卡） */
.pay-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px dashed var(--line);
}

.pay-chips-label {
  color: var(--muted-2);
  font-size: 13px;
  font-weight: 700;
}

.pay-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px 7px 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.pay-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: #fff;
  border-radius: 50%;
  font-size: 13px;
  font-style: normal;
  font-weight: 900;
}

.pay-icon-wechat { background: #07c160; }
.pay-icon-alipay { background: #1677ff; }

/* ---------- 深色 CTA 大卡 ---------- */
.mega-dark {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 5vw, 60px);
  color: #fff;
  background:
    radial-gradient(circle at 88% 12%, rgba(40, 184, 148, 0.32), transparent 40%),
    radial-gradient(circle at 6% 95%, rgba(108, 77, 255, 0.26), transparent 38%),
    linear-gradient(135deg, #10151f 0%, #15271f 55%, #10151f 100%);
  border-radius: var(--radius-mega);
  box-shadow: var(--shadow-mega);
}

.mega-dark h2 {
  color: #fff;
}

.mega-dark p {
  color: rgba(255, 255, 255, 0.72);
}

.download-inner {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: center;
}

.download-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  backdrop-filter: blur(8px);
}

.download-card h3 {
  color: #fff;
}

.steps-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.steps-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
}

.steps-list li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  color: var(--brand-bright);
  background: rgba(50, 230, 185, 0.12);
  border: 1px solid rgba(50, 230, 185, 0.35);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 900;
}

/* ---------- FAQ ---------- */
details {
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

details:hover {
  border-color: rgba(40, 184, 148, 0.4);
}

details[open] {
  border-color: rgba(40, 184, 148, 0.55);
  box-shadow: var(--shadow-green);
}

details + details {
  margin-top: 12px;
}

summary {
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
}

details p {
  margin: 12px 0 0;
}

/* ---------- 联系我们 ---------- */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: 44px;
  align-items: start;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.contact-list li {
  padding: 16px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-list li:hover {
  border-color: rgba(40, 184, 148, 0.4);
  box-shadow: var(--shadow-green);
}

.contact-label {
  display: block;
  margin-bottom: 4px;
  color: var(--brand-hover);
  font-size: 13px;
  font-weight: 900;
}

.contact-list strong {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.contact-link {
  color: var(--brand-hover);
  font-size: 14px;
  font-weight: 700;
}

.contact-link:hover {
  text-decoration: underline;
}

.panel {
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.kefu-qr {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
  padding: 18px;
  background: var(--mint);
  border: 1px solid rgba(40, 184, 148, 0.2);
  border-radius: 14px;
}

.kefu-qr img {
  flex: 0 0 auto;
  width: 132px;
  height: 132px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  object-fit: contain;
}

.kefu-qr h3 {
  margin-bottom: 4px;
}

.kefu-qr p {
  margin: 0;
  font-size: 14px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 34px 0 26px;
  color: #667085;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr 0.7fr 1fr;
  gap: 34px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.footer-logo {
  margin-bottom: 12px;
}

.site-footer p {
  max-width: 420px;
}

.site-footer h3 {
  font-size: 16px;
}

.site-footer a:not(.logo) {
  display: block;
  margin: 10px 0;
  color: #667085;
}

.site-footer a:not(.logo):hover {
  color: var(--brand-hover);
}

.footer-contact {
  display: grid;
  gap: 6px;
  padding: 14px 0 0;
  margin: 14px 0 0;
  border-top: 1px dashed var(--line);
  list-style: none;
  color: var(--muted-2);
  font-size: 13px;
}

.footer-contact a {
  display: inline !important;
  margin: 0 !important;
  color: var(--brand-hover) !important;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: #858699;
  font-size: 14px;
}

.footer-bottom a {
  margin: 0 !important;
  display: inline !important;
}

/* ---------- 支付弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(25, 26, 35, 0.58);
  backdrop-filter: blur(6px);
}

.modal-card {
  position: relative;
  width: min(520px, 100%);
  padding: 28px;
  background: #fff;
  border: 1px solid rgba(40, 184, 148, 0.2);
  border-radius: 20px;
  box-shadow: 0 30px 90px rgba(25, 26, 35, 0.24);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  color: var(--muted);
  background: var(--bg);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
}

.order-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.order-summary div {
  padding: 14px;
  background: var(--mint);
  border-radius: 12px;
}

.order-summary span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.order-summary strong {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-size: 22px;
}

.pay-method-group {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.radio-card {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
}

.radio-card:has(input:checked) {
  border-color: rgba(40, 184, 148, 0.62);
  box-shadow: 0 0 0 4px rgba(40, 184, 148, 0.1);
}

.radio-card input {
  width: 18px;
  height: 18px;
  accent-color: var(--brand);
}

.radio-card small {
  display: block;
  color: var(--muted);
}

.radio-card .pay-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: #fff;
  border-radius: 10px;
  font-weight: 900;
}

.modal-card > .btn {
  width: 100%;
}

.form-status {
  margin: 0;
  color: var(--muted-2);
  font-size: 14px;
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  width: 46px;
  height: 46px;
  color: #fff;
  background: var(--brand);
  border: 0;
  border-radius: 50%;
  box-shadow: var(--shadow-btn);
  cursor: pointer;
  font-size: 20px;
  font-weight: 900;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
}

.to-top.is-show {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.to-top:hover {
  background: var(--brand-hover);
}

/* ---------- 动画 ---------- */
@keyframes caretBlink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(40, 184, 148, 0.28); }
  50% { box-shadow: 0 0 0 10px rgba(40, 184, 148, 0); }
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(24px, -18px) scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .orb,
  .pill-pulse,
  .caret {
    animation: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .scenario-grid,
  .policies-grid,
  .pricing {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .feature-card-wide {
    grid-column: span 6;
  }

  .price-card-featured {
    transform: none;
  }

  .price-card-featured:hover {
    transform: translateY(-5px);
  }

  .assure-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 24px;
  }

  .step::before {
    display: none;
  }

  .download-inner,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

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

  .app-sidebar {
    display: none;
  }

  .artifact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .container,
  .narrow {
    width: min(100% - 24px, 1180px);
  }

  .site-header {
    top: 8px;
    padding-top: 8px;
  }

  .nav {
    border-radius: 24px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow-mega);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    padding: 10px 12px;
    border-radius: 10px;
  }

  .nav-menu a:not(.btn)::after {
    display: none;
  }

  .nav-menu a:not(.btn):hover {
    background: rgba(40, 184, 148, 0.1);
  }

  .nav-menu .btn {
    margin-top: 8px;
  }

  .hero {
    padding: 52px 0 24px;
  }

  .section {
    padding: 30px 0;
  }

  .mega-card,
  .mega-dark {
    border-radius: 22px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 0;
    margin-top: 44px;
  }

  .hstat:nth-child(3) {
    border-left: 0;
  }

  .assure-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .feature-card-wide {
    grid-template-columns: 1fr;
  }

  .contact-list {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .modal {
    align-items: flex-end;
    padding: 0;
  }

  .modal-card {
    width: 100%;
    max-height: 92vh;
    overflow: auto;
    border-radius: 20px 20px 0 0;
  }
}

@media (max-width: 460px) {
  h1 {
    font-size: 34px;
  }

  .hero-actions,
  .hero-actions .btn,
  .price-card .btn {
    width: 100%;
  }

  .kefu-qr {
    align-items: flex-start;
    flex-direction: column;
  }

  .tool-item {
    grid-template-columns: auto 1fr;
  }

  .tool-status {
    grid-column: 2;
    justify-self: start;
  }

  .order-summary {
    grid-template-columns: 1fr;
  }
}

/* ---------- IE10/11 基础降级（不支持 CSS 变量/Grid，仅保证可读可用） ---------- */
@media screen and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  body {
    color: #1a1a1a;
    background: #f3f6f5;
  }

  h1,
  h2,
  h3 {
    color: #191a23;
  }

  p,
  .scenario-card li,
  .plan-features li {
    color: #666666;
  }

  /* main.js 在 IE 无法执行，直接显示所有渐入元素 */
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  /* 隐藏 IE 无法正确渲染的装饰 */
  .hero-orbs,
  .hero::before,
  .caret {
    display: none !important;
  }

  .nav,
  .mega-card,
  .app-window,
  .feature-card,
  .scenario-card,
  .price-card,
  .panel,
  details,
  .pay-chip,
  .hero-badges span {
    background: #ffffff;
    border: 1px solid #e4e9ee;
  }

  .site-header {
    background: #ffffff;
    border-bottom: 1px solid #e4e9ee;
  }

  .pill,
  .eyebrow {
    color: #22a683;
    background: #eef9f7;
    border: 1px solid #bfe8dc;
  }

  .type-line,
  .scenario-card li span,
  .contact-label,
  .contact-link {
    color: #22a683;
  }

  .hstat strong,
  .hstat strong span,
  .grad {
    color: #22a683;
  }

  .btn-primary {
    color: #ffffff;
    background: #28b894;
  }

  .btn-ghost,
  .btn-light {
    color: #191a23;
    background: #ffffff;
    border: 1px solid #28b894;
  }

  .btn {
    padding: 12px 24px;
    display: inline-block;
    text-align: center;
  }

  .price,
  .step-num {
    color: #191a23;
  }

  .step-num {
    color: #ffffff;
    background: #28b894;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    line-height: 44px;
    text-align: center;
  }

  .mega-dark {
    background: #15201b;
  }

  .mega-dark h2,
  .mega-dark h3,
  .download-card h3 {
    color: #ffffff;
  }

  .mega-dark p {
    color: #cccccc;
  }

  .to-top {
    color: #ffffff;
    background: #28b894;
  }

  .feature-icon,
  .scenario-icon,
  .voice-icon,
  .tool-icon {
    color: #22a683;
    background: #eef9f7;
  }

  .site-footer a,
  .footer-contact {
    color: #667085;
  }
}