/* ============================================================
   蝴蝶管家 官网 · 基础样式与布局
   品牌主色 #ff7a1f（与客户端 antd colorPrimary 一致）
   ============================================================ */

:root {
  --brand: #ff7a1f;
  --brand-2: #ffa14d;
  --brand-deep: #e35d00;
  --brand-soft: rgba(255, 122, 31, 0.16);

  --bg: #06070d;
  --bg-2: #0a0c15;
  --bg-3: #0e1119;

  --panel: rgba(255, 255, 255, 0.045);
  --panel-2: rgba(255, 255, 255, 0.07);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #eef1f8;
  --text-2: #b9c1d4;
  --muted: #8c95ab;

  --green: #2fd07f;
  --warn: #ffb02e;
  --blue: #4d8dff;
  --purple: #a678ff;
  --cyan: #35d6e0;
  --pink: #ff6b9d;
  --red: #ff5f57;

  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 26px;

  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  --shadow-brand: 0 18px 44px rgba(255, 122, 31, 0.28);

  --shell: 1200px;
  --header-h: 74px;

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system,
    "Helvetica Neue", Arial, sans-serif;
  --font-num: "SF Mono", "JetBrains Mono", "Cascadia Mono", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.22;
  letter-spacing: -0.015em;
}

p {
  margin: 0;
}

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

svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

::selection {
  background: rgba(255, 122, 31, 0.32);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 6px;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.grad {
  background: linear-gradient(100deg, var(--brand-2), var(--brand) 45%, #ffd08a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-left: 0.12em;
}

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

/* ===================== 背景装饰 ===================== */
.bg-aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-aurora__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
}

.bg-aurora__blob--a {
  width: 46vw;
  height: 46vw;
  top: -12vw;
  right: -8vw;
  background: radial-gradient(circle, rgba(255, 122, 31, 0.5), transparent 66%);
}

.bg-aurora__blob--b {
  width: 38vw;
  height: 38vw;
  top: 38vh;
  left: -14vw;
  background: radial-gradient(circle, rgba(77, 141, 255, 0.4), transparent 68%);
}

.bg-aurora__blob--c {
  width: 34vw;
  height: 34vw;
  top: 120vh;
  right: -10vw;
  background: radial-gradient(circle, rgba(166, 120, 255, 0.34), transparent 68%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 25%, transparent 78%);
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 90;
  background: linear-gradient(90deg, var(--brand-deep), var(--brand), #ffd08a);
  box-shadow: 0 0 14px rgba(255, 122, 31, 0.7);
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 340px;
  height: 340px;
  margin: -170px 0 0 -170px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.4s ease;
  background: radial-gradient(circle, rgba(255, 122, 31, 0.13), transparent 62%);
}

body.has-pointer .cursor-glow {
  opacity: 1;
}

/* ===================== 按钮 ===================== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.3, 1), box-shadow 0.25s ease,
    background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.btn--primary {
  overflow: hidden;
  color: #1b0d00;
  background: linear-gradient(135deg, #ffb066, var(--brand) 42%, #f06500);
  box-shadow: var(--shadow-brand);
}

.btn--primary::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.45), transparent 80%);
  transform: translateX(-120%);
  transition: transform 0.7s ease;
  pointer-events: none;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 52px rgba(255, 122, 31, 0.42);
}

.btn--primary:hover::after {
  transform: translateX(120%);
}

.btn--ghost {
  color: var(--text);
  background: var(--panel);
  border-color: var(--line-strong);
  backdrop-filter: blur(10px);
}

.btn--ghost:hover {
  background: var(--panel-2);
  border-color: rgba(255, 122, 31, 0.55);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 9px 18px;
  font-size: 14px;
}

.btn--lg {
  padding: 15px 32px;
  font-size: 16.5px;
}

.btn--block {
  width: 100%;
}

/* ===================== 顶部导航 ===================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: height 0.3s ease, background-color 0.3s ease, border-color 0.3s ease,
    backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-stuck {
  height: 64px;
  background: rgba(6, 7, 13, 0.78);
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  box-shadow: 0 6px 18px rgba(255, 122, 31, 0.3);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand__text strong {
  font-size: 17px;
  letter-spacing: 0.02em;
}

.brand__text em {
  font-style: normal;
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  position: relative;
  padding: 9px 15px;
  font-size: 14.5px;
  color: var(--text-2);
  border-radius: 999px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav a:hover {
  color: var(--text);
  background: var(--panel);
}

.nav a.is-current {
  color: var(--text);
}

.nav a.is-current::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  transform: translateX(-50%);
  background: var(--brand);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  padding: 11px 10px;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 64px 0 auto 0;
  z-index: 79;
  display: none;
  flex-direction: column;
  padding: 14px 24px 26px;
  gap: 4px;
  background: rgba(6, 7, 13, 0.96);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

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

.mobile-menu a {
  padding: 13px 6px;
  font-size: 16px;
  border-bottom: 1px solid var(--line);
}

/* ===================== 首屏 ===================== */
.hero {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-h) + 66px) 0 40px;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
  pointer-events: none;
}

.hero__scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 240px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 122, 31, 0.1), transparent);
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.02fr);
  gap: 56px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 122, 31, 0.34);
  background: rgba(255, 122, 31, 0.09);
  color: #ffc38f;
  font-size: 13.5px;
  letter-spacing: 0.03em;
}

.pill__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 0 rgba(255, 122, 31, 0.6);
}

.hero__title {
  margin: 22px 0 0;
  font-size: clamp(34px, 3.75vw, 54px);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero__title .line {
  display: block;
}

.hero__title .line--accent {
  background: linear-gradient(100deg, #fff 8%, var(--brand-2) 42%, var(--brand) 72%, #ffd08a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lede {
  margin-top: 22px;
  max-width: 540px;
  font-size: 16.5px;
  color: var(--text-2);
}

.hero__cta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero__meta {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 14px;
  color: var(--muted);
}

.hero__meta li {
  position: relative;
  padding-left: 20px;
}

.hero__meta li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(47, 208, 127, 0.8);
}

/* ---------- 客户端窗口模拟 ---------- */
.hero__visual {
  position: relative;
  perspective: 1400px;
}

.app-window {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(20, 23, 34, 0.96), rgba(9, 11, 18, 0.98));
  box-shadow: var(--shadow);
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
}

.app-window__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex: none;
}

.dot--red {
  background: #ff5f57;
}

.dot--yellow {
  background: #febc2e;
}

.dot--green {
  background: #28c840;
}

.app-window__title {
  margin-left: 10px;
  font-size: 13px;
  color: var(--muted);
}

.app-window__live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--green);
}

.app-window__live i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

.app-window__body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.hero-stat {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--panel);
}

.hero-stat__label {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
}

.hero-stat__value {
  display: block;
  margin-top: 4px;
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-stat__value--ok {
  color: var(--green);
}

.hero-stat__value--warn {
  color: var(--warn);
}

.hero-list {
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

.hero-list__row {
  display: grid;
  grid-template-columns: 30px 1fr auto auto auto;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  font-size: 13px;
  border-bottom: 1px solid var(--line);
}

.hero-list__row:last-child {
  border-bottom: 0;
}

.avatar {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: #2b1200;
  background: linear-gradient(135deg, #ffc38f, var(--brand));
}

.hero-list__name {
  color: var(--text);
  font-weight: 500;
}

.hero-list__extra {
  color: var(--muted);
}

.hero-list__time {
  color: var(--text-2);
  font-family: var(--font-num);
  font-size: 11.5px;
}

.hero-chart {
  padding: 14px 16px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--panel);
}

.hero-chart__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--muted);
}

.hero-chart__delta {
  color: var(--green);
  font-family: var(--font-num);
}

.hero-chart__bars {
  margin-top: 12px;
  height: 78px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.hero-chart__bars i {
  flex: 1;
  height: var(--h, 40%);
  border-radius: 5px 5px 2px 2px;
  background: linear-gradient(180deg, rgba(255, 122, 31, 0.95), rgba(255, 122, 31, 0.16));
  transform-origin: bottom;
  animation: bar-grow 2.6s ease-in-out infinite alternate;
  animation-delay: calc(var(--i, 0) * 0.1s);
}

.hero-chart__bars i:nth-child(2) {
  animation-delay: 0.15s;
}

.hero-chart__bars i:nth-child(3) {
  animation-delay: 0.3s;
}

.hero-chart__bars i:nth-child(4) {
  animation-delay: 0.45s;
}

.hero-chart__bars i:nth-child(5) {
  animation-delay: 0.6s;
}

.hero-chart__bars i:nth-child(6) {
  animation-delay: 0.75s;
}

.hero-chart__bars i:nth-child(7) {
  animation-delay: 0.9s;
}

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid var(--line-strong);
  background: rgba(14, 17, 25, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
  font-size: 12.5px;
}

.float-card span {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}

.float-card strong {
  font-size: 13px;
}

.float-card em {
  font-style: normal;
  color: var(--muted);
}

.float-card__icon {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 10px;
  display: grid;
  place-items: center;
  padding: 6px;
}

.float-card__icon--ok {
  color: var(--green);
  background: rgba(47, 208, 127, 0.14);
}

.float-card__icon--brand {
  color: var(--brand);
  background: rgba(255, 122, 31, 0.16);
}

.float-card--a {
  left: -26px;
  top: 44px;
}

.float-card--b {
  right: -22px;
  bottom: -20px;
}

.stat-strip {
  margin-top: 74px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--line);
}

.stat-strip__item {
  padding: 24px 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  text-align: center;
}

.stat-strip__item strong {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, #fff, var(--brand-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-strip__item span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
}

/* 非计数的数据块（如「全自动」）用系统中文字体，避免等宽字体挤压 */
.stat-strip__item strong.is-text {
  font-family: var(--font);
  font-size: clamp(22px, 2.4vw, 32px);
  letter-spacing: 0.08em;
}

/* ===================== 跑马灯 ===================== */
.marquee {
  position: relative;
  z-index: 2;
  margin: 64px 0 8px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  animation: marquee-scroll 42s linear infinite;
}

.marquee__track span {
  font-size: 15px;
  color: var(--text-2);
  white-space: nowrap;
}

.marquee__track i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0.7;
  flex: none;
}

/* ===================== 区块通用 ===================== */
.section {
  position: relative;
  z-index: 2;
  padding: 110px 0;
}

.section--alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.022), rgba(255, 255, 255, 0));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section__head {
  max-width: 760px;
  margin: 0 auto 58px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--brand-2);
}

.section__title {
  margin-top: 14px;
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 750;
}

.section__lede {
  margin-top: 16px;
  color: var(--text-2);
  font-size: 16px;
}

.section__lede b {
  color: var(--brand-2);
  font-weight: 600;
}

.card {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  overflow: hidden;
}

/* ===================== 功能卡片 ===================== */
.grid--features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature {
  padding: 28px 26px 30px;
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.3, 1), border-color 0.35s ease,
    box-shadow 0.35s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

.feature:hover {
  border-color: rgba(255, 122, 31, 0.45);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.45);
}

.feature__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  padding: 12px;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.feature__icon svg {
  stroke-width: 1.8;
}

.feature__icon--brand {
  color: var(--brand);
  background: rgba(255, 122, 31, 0.14);
}

.feature__icon--green {
  color: var(--green);
  background: rgba(47, 208, 127, 0.13);
}

.feature__icon--purple {
  color: var(--purple);
  background: rgba(166, 120, 255, 0.14);
}

.feature__icon--blue {
  color: var(--blue);
  background: rgba(77, 141, 255, 0.14);
}

.feature__icon--amber {
  color: var(--warn);
  background: rgba(255, 176, 46, 0.14);
}

.feature__icon--pink {
  color: var(--pink);
  background: rgba(255, 107, 157, 0.14);
}

.feature__icon--cyan {
  color: var(--cyan);
  background: rgba(53, 214, 224, 0.14);
}

.feature h3 {
  position: relative;
  z-index: 1;
  font-size: 18.5px;
  font-weight: 650;
}

.feature p {
  position: relative;
  z-index: 1;
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--text-2);
}

.feature__glow {
  position: absolute;
  width: 220px;
  height: 220px;
  right: -70px;
  top: -90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 31, 0.3), transparent 66%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature:hover .feature__glow {
  opacity: 1;
}

/* ===================== 界面演示 ===================== */
.showcase {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  overflow: hidden;
  box-shadow: var(--shadow);
}

.showcase__tabs {
  display: flex;
  gap: 6px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}

.showcase__tabs::-webkit-scrollbar {
  display: none;
}

.showcase__tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 11px;
  background: transparent;
  color: var(--text-2);
  font-size: 14px;
  white-space: nowrap;
  transition: all 0.25s ease;
}

.showcase__tab svg {
  width: 17px;
  height: 17px;
}

.showcase__tab:hover {
  color: var(--text);
  background: var(--panel);
}

.showcase__tab.is-active {
  color: #1b0d00;
  background: linear-gradient(135deg, #ffb066, var(--brand));
  box-shadow: 0 10px 26px rgba(255, 122, 31, 0.28);
}

.showcase__stage {
  padding: 20px;
  min-height: 430px;
}

.panel {
  display: none;
  grid-template-columns: 232px 1fr;
  gap: 18px;
}

.panel.is-active {
  display: grid;
}

/* 没有左侧分组栏的面板（发布 / 数据 / 日志）占满整行 */
.panel__main:only-child {
  grid-column: 1 / -1;
}

.panel__side {
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.panel__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.panel__side .panel__label:not(:first-child) {
  margin-top: 20px;
}

.side-list li {
  padding: 9px 12px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.side-list li b {
  font-family: var(--font-num);
  font-size: 12.5px;
  color: var(--muted);
}

.side-list li.is-active {
  color: var(--text);
  background: var(--brand-soft);
  box-shadow: inset 0 0 0 1px rgba(255, 122, 31, 0.35);
}

.side-list li.is-active b {
  color: var(--brand-2);
}

.side-list--muted li {
  font-size: 13.5px;
  color: var(--muted);
}

.panel__main {
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(8, 10, 17, 0.7);
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 100%;
}

.panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.panel__head strong {
  font-size: 16.5px;
}

.panel__hint {
  font-size: 13px;
  color: var(--muted);
}

.table {
  border-radius: 12px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.table__row {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 1fr 1fr;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  font-size: 13.5px;
  color: var(--text-2);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.012);
  transition: background-color 0.25s ease;
}

.table__row:last-child {
  border-bottom: 0;
}

.table__row:hover {
  background: rgba(255, 122, 31, 0.06);
}

.table__row > span:first-child {
  color: var(--text);
}

.table__row--head {
  font-size: 12.5px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-style: normal;
  white-space: nowrap;
}

.tag--ok {
  color: var(--green);
  background: rgba(47, 208, 127, 0.13);
}

.tag--warn {
  color: var(--warn);
  background: rgba(255, 176, 46, 0.14);
}

.publish-grid {
  display: grid;
  gap: 16px;
}

.publish-block {
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.022);
}

.publish-block--schedule {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.chip i {
  font-style: normal;
  color: var(--muted);
}

.chip--add {
  color: var(--brand-2);
  background: rgba(255, 122, 31, 0.1);
  border-color: rgba(255, 122, 31, 0.34);
  border-style: dashed;
}

.chip--topic {
  color: var(--blue);
  background: rgba(77, 141, 255, 0.1);
  border-color: rgba(77, 141, 255, 0.28);
}

.topic-row {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skeleton-lines {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.skeleton-lines i {
  height: 10px;
  width: var(--w, 70%);
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.07));
  background-size: 220% 100%;
  animation: shimmer 2.4s linear infinite;
}

.switch-row {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
}

.switch {
  position: relative;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  flex: none;
}

.switch i {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.3s ease;
}

.switch.is-on {
  background: linear-gradient(135deg, #ffb066, var(--brand));
  box-shadow: 0 0 18px rgba(255, 122, 31, 0.4);
}

.switch.is-on i {
  transform: translateX(20px);
}

.progress-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.progress-row {
  display: grid;
  grid-template-columns: minmax(120px, 1.1fr) 2fr auto;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-2);
}

.progress-row__name {
  color: var(--text);
}

.progress {
  height: 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progress i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand-deep), var(--brand), #ffc38f);
  transition: width 1.2s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.panel.is-active .progress i {
  width: var(--p, 0%);
}

.progress i.is-running {
  background: linear-gradient(90deg, var(--brand), #ffd08a, var(--brand));
  background-size: 220% 100%;
  animation: shimmer 1.6s linear infinite;
}

.progress-row__state {
  font-size: 12.5px;
  color: var(--muted);
  min-width: 76px;
  text-align: right;
}

.state--done {
  color: var(--green);
}

.state--running {
  color: var(--brand-2);
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.thumb {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0 8px, rgba(255, 255, 255, 0.02) 8px 16px);
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--muted);
}

.thumb--done {
  border-color: rgba(47, 208, 127, 0.4);
  color: var(--green);
}

.thumb--done::after {
  content: "";
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: rgba(47, 208, 127, 0.2)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232fd07f' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")
    center / 11px no-repeat;
}

.thumb--running {
  border-color: rgba(255, 122, 31, 0.55);
  color: var(--brand-2);
}

.thumb--running::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 11px;
  border: 1px solid rgba(255, 122, 31, 0.8);
  animation: pulse-ring 1.8s ease-out infinite;
}

.thumb--add {
  border-style: dashed;
  color: var(--brand-2);
  font-size: 22px;
}

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

.kpi {
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.kpi span {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
}

.kpi strong {
  display: block;
  margin-top: 5px;
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 700;
}

.kpi em {
  font-style: normal;
  font-size: 12px;
  font-family: var(--font-num);
}

.kpi em.up {
  color: var(--green);
}

.chart {
  position: relative;
  padding: 8px 0 0 40px;
  flex: 1;
}

.chart__axis {
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--muted);
  font-family: var(--font-num);
}

.chart__plot {
  position: relative;
  height: 190px;
  border-bottom: 1px solid var(--line);
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 100% 25%;
}

.chart__plot svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.chart__line {
  fill: none;
  stroke: var(--brand);
  stroke-width: 2.6;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  filter: drop-shadow(0 6px 14px rgba(255, 122, 31, 0.4));
}

.panel.is-active .chart__line {
  animation: draw-line 2.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.chart__area {
  fill: url(#areaFill);
  opacity: 0;
}

.panel.is-active .chart__area {
  animation: fade-in 1.4s ease 1s forwards;
}

.chart__dot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 0 rgba(255, 122, 31, 0.6);
}

.panel.is-active .chart__dot {
  animation: pulse-ring 2s ease-out infinite;
}

.chart__x {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 11.5px;
  color: var(--muted);
}

.log-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-size: 13.5px;
  color: var(--text-2);
  opacity: 0;
  transform: translateX(-10px);
}

.panel.is-active .log {
  animation: slide-in 0.6s cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
}

.panel.is-active .log:nth-child(1) {
  animation-delay: 0.15s;
}

.panel.is-active .log:nth-child(2) {
  animation-delay: 0.35s;
}

.panel.is-active .log:nth-child(3) {
  animation-delay: 0.55s;
}

.panel.is-active .log:nth-child(4) {
  animation-delay: 0.75s;
}

.panel.is-active .log:nth-child(5) {
  animation-delay: 0.95s;
}

.log__time {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--muted);
}

.keepalive-badge {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid rgba(47, 208, 127, 0.3);
  background: rgba(47, 208, 127, 0.08);
}

.keepalive-badge svg {
  width: 30px;
  height: 30px;
  flex: none;
  color: var(--green);
}

.keepalive-badge span {
  display: flex;
  flex-direction: column;
}

.keepalive-badge strong {
  font-size: 14.5px;
  color: var(--green);
}

.keepalive-badge em {
  font-style: normal;
  font-size: 13px;
  color: var(--text-2);
}

/* ===================== 保活时间轴 ===================== */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(255, 122, 31, 0.75), rgba(255, 122, 31, 0.08));
}

.timeline__item {
  position: relative;
  padding-bottom: 22px;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__node {
  position: absolute;
  left: -34px;
  top: 22px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 122, 31, 0.18);
  border: 1px solid rgba(255, 122, 31, 0.6);
}

.timeline__node i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 12px rgba(255, 122, 31, 0.9);
}

.timeline__card {
  padding: 22px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.018));
  transition: transform 0.35s ease, border-color 0.35s ease;
}

.timeline__card:hover {
  transform: translateX(6px);
  border-color: rgba(255, 122, 31, 0.42);
}

.timeline__index {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--brand-2);
}

.timeline__card h3 {
  margin-top: 8px;
  font-size: 19px;
  font-weight: 650;
}

.timeline__card p {
  margin-top: 9px;
  font-size: 14.5px;
  color: var(--text-2);
}

.highlight-band {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--line);
  overflow: hidden;
}

.highlight-band__item {
  padding: 26px 24px;
  background: rgba(10, 12, 20, 0.86);
}

.highlight-band__item strong {
  display: block;
  font-size: 16px;
}

.highlight-band__item span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-2);
}

/* ===================== 价格 ===================== */
.cycle-switch {
  display: inline-flex;
  margin-top: 30px;
  padding: 5px;
  gap: 4px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.cycle-switch__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  font-size: 14.5px;
  transition: all 0.28s ease;
}

.cycle-switch__btn em {
  font-style: normal;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--brand-2);
  background: rgba(255, 122, 31, 0.14);
}

.cycle-switch__btn.is-active {
  color: #1b0d00;
  background: linear-gradient(135deg, #ffb066, var(--brand));
  box-shadow: 0 10px 24px rgba(255, 122, 31, 0.26);
}

.cycle-switch__btn.is-active em {
  color: #4a2200;
  background: rgba(0, 0, 0, 0.14);
}

.pricing {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 24px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.018));
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.3, 1), border-color 0.35s ease,
    box-shadow 0.35s ease;
  transform-style: preserve-3d;
}

.price-card:hover {
  border-color: rgba(255, 122, 31, 0.45);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.45);
}

.price-card--featured {
  border-color: rgba(255, 122, 31, 0.55);
  background: linear-gradient(170deg, rgba(255, 122, 31, 0.14), rgba(255, 122, 31, 0.03));
  box-shadow: 0 26px 70px rgba(255, 122, 31, 0.2);
}

.price-card__badge {
  position: absolute;
  top: -12px;
  right: 22px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #1b0d00;
  background: linear-gradient(135deg, #ffd08a, var(--brand));
  box-shadow: 0 10px 22px rgba(255, 122, 31, 0.34);
}

.price-card h3 {
  font-size: 19px;
  font-weight: 650;
}

.price-card header p {
  margin-top: 7px;
  font-size: 13.5px;
  color: var(--muted);
}

/* 版本名下的坑位标签 */
.price-card__slots {
  display: inline-block;
  margin-top: 9px;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid rgba(255, 122, 31, 0.3);
  background: rgba(255, 122, 31, 0.12);
  color: var(--brand-2);
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}

.price-card__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-top: 22px;
}

.price-card__currency {
  font-size: 20px;
  color: var(--brand-2);
}

.price-card__price strong {
  font-family: var(--font-num);
  font-size: 46px;
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1;
}

.price-card__unit {
  font-size: 14px;
  color: var(--muted);
}

.price-card__unit-price {
  margin-top: 9px;
  font-size: 13px;
  color: var(--muted);
  font-family: var(--font-num);
}

/* 原价 + 省多少（只在高档位展示，用于体现"叠加后有优惠"） */
.price-card__orig {
  margin-top: 9px;
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 22px;
  font-size: 12.5px;
  color: var(--muted);
  font-family: var(--font-num);
}

.price-card__orig s {
  opacity: 0.72;
}

.price-card__orig .save {
  font-style: normal;
  padding: 2px 9px;
  border-radius: 999px;
  font-weight: 600;
  color: #1b0d00;
  background: linear-gradient(135deg, #ffd08a, var(--brand));
}

.price-card__list {
  margin: 22px 0 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.price-card__list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-2);
}

.price-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: rgba(47, 208, 127, 0.16)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232fd07f' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")
    center / 9px no-repeat;
}

.pricing__notes {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.note {
  display: flex;
  gap: 14px;
  padding: 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.note__icon {
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 12px;
  display: grid;
  place-items: center;
  padding: 10px;
  color: var(--brand);
  background: rgba(255, 122, 31, 0.13);
}

.note strong {
  display: block;
  font-size: 15.5px;
}

.note p {
  margin-top: 7px;
  font-size: 13.8px;
  color: var(--text-2);
}

/* ===================== 下载 ===================== */
.download {
  position: relative;
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 44px;
  padding: 46px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: linear-gradient(140deg, rgba(255, 122, 31, 0.12), rgba(255, 255, 255, 0.03) 42%, rgba(255, 255, 255, 0.015));
  overflow: hidden;
}

.download__glow {
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  top: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 31, 0.34), transparent 66%);
  pointer-events: none;
}

.download__main {
  position: relative;
}

.download__main h2 {
  margin-top: 12px;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 730;
}

.steps {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.steps li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.steps__index {
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: #1b0d00;
  background: linear-gradient(135deg, #ffd08a, var(--brand));
  box-shadow: 0 10px 22px rgba(255, 122, 31, 0.3);
}

.steps li strong {
  font-size: 16px;
}

.steps li p {
  margin-top: 5px;
  font-size: 14px;
  color: var(--text-2);
}

.download__cta {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.download__version {
  font-size: 13px;
  color: var(--muted);
}

.download__side {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(8, 10, 17, 0.6);
  backdrop-filter: blur(10px);
}

.qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 9px;
}

.qr img {
  width: 176px;
  height: 176px;
  border-radius: 14px;
  padding: 8px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.qr strong {
  font-size: 15px;
}

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

.download__specs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.download__specs li {
  display: flex;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-2);
}

.download__specs b {
  min-width: 40px;
  color: var(--muted);
  font-weight: 500;
}

/* ===================== 常见问题 ===================== */
.faq {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq__item {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.faq__item[open] {
  border-color: rgba(255, 122, 31, 0.4);
  background: rgba(255, 122, 31, 0.05);
}

.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq__plus {
  position: relative;
  width: 20px;
  height: 20px;
  flex: none;
}

.faq__plus::before,
.faq__plus::after {
  content: "";
  position: absolute;
  background: var(--brand);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.faq__plus::before {
  left: 0;
  top: 9px;
  width: 20px;
  height: 2px;
}

.faq__plus::after {
  left: 9px;
  top: 0;
  width: 2px;
  height: 20px;
}

.faq__item[open] .faq__plus::after {
  transform: rotate(90deg);
  opacity: 0;
}

.faq__body {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-2);
}

.faq__body b {
  color: var(--brand-2);
}

/* ===================== 页脚 ===================== */
.site-footer {
  position: relative;
  z-index: 2;
  padding: 66px 0 30px;
  border-top: 1px solid var(--line);
  background: rgba(4, 5, 10, 0.7);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1.2fr auto;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.site-footer__brand p {
  margin-top: 18px;
  max-width: 380px;
  font-size: 14px;
  color: var(--text-2);
}

.site-footer__version {
  display: inline-block;
  margin-top: 16px;
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.site-footer__links div {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.site-footer__links strong {
  font-size: 14px;
  margin-bottom: 3px;
}

.site-footer__links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.2s ease, transform 0.2s ease;
  width: fit-content;
}

.site-footer__links a:hover {
  color: var(--brand-2);
  transform: translateX(3px);
}

.site-footer__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.site-footer__qr img {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  padding: 6px;
  background: #fff;
}

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

.site-footer__bottom {
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 12.8px;
  color: var(--muted);
}

.site-footer__disclaimer {
  max-width: 620px;
}

/* ===================== 回到顶部 ===================== */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 70;
  width: 46px;
  height: 46px;
  padding: 13px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: rgba(14, 17, 25, 0.9);
  backdrop-filter: blur(12px);
  color: var(--text);
  opacity: 0;
  transform: translateY(14px) scale(0.94);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

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

.to-top:hover {
  border-color: var(--brand);
  color: var(--brand-2);
}

/* ===================== 响应式 ===================== */
@media (max-width: 1080px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .hero__lede {
    max-width: none;
  }

  .float-card--a {
    left: 6px;
  }

  .float-card--b {
    right: 6px;
  }

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

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

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

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

  .download__side {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 26px;
  }

  .download__specs {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 0 0 0 22px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .section {
    padding: 78px 0;
  }

  .stat-strip {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 56px;
  }

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

  .panel__side {
    display: none;
  }

  .showcase__stage {
    padding: 14px;
    min-height: 0;
  }

  .highlight-band {
    grid-template-columns: 1fr;
  }

  .kpi-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .thumbs {
    grid-template-columns: repeat(4, 1fr);
  }

  .timeline {
    padding-left: 26px;
  }

  .timeline__node {
    left: -26px;
  }

  .download {
    padding: 30px 22px;
  }

  .download__side {
    flex-direction: column;
    align-items: stretch;
  }

  .download__specs {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 16px 0 0;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .site-footer__qr {
    align-items: flex-start;
    text-align: left;
  }
}

@media (max-width: 620px) {
  .shell {
    padding: 0 18px;
  }

  .brand__text em {
    display: none;
  }

  .hero__title {
    font-size: clamp(27px, 7.4vw, 36px);
  }

  .section__title {
    font-size: clamp(25px, 7vw, 32px);
  }

  .hero {
    padding-top: calc(var(--header-h) + 40px);
  }

  .grid--features,
  .pricing {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero-list__row {
    grid-template-columns: 30px 1fr auto;
    row-gap: 6px;
  }

  .hero-list__extra {
    display: none;
  }

  .hero-list__time {
    grid-column: 2 / -1;
  }

  .table__row {
    grid-template-columns: 1fr auto;
    row-gap: 6px;
  }

  .table__row > span:nth-child(3),
  .table__row > span:nth-child(4) {
    font-size: 12px;
    color: var(--muted);
  }

  .float-card--a,
  .float-card--b {
    position: static;
    margin-top: 12px;
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .btn--lg {
    width: 100%;
  }

  .progress-row {
    grid-template-columns: 1fr auto;
    row-gap: 6px;
  }

  .progress-row .progress {
    grid-column: 1 / -1;
  }

  .download__cta .btn {
    width: 100%;
  }

  .to-top {
    right: 16px;
    bottom: 16px;
  }
}