/* ==========================================================================
   电商图片下载器 · 介绍页
   纯静态、零外部依赖，可直接部署到任意静态托管平台
   ========================================================================== */

:root {
  --bg: #f7f2ea;
  --bg-soft: #fbf7f1;
  --paper: #fffdf9;
  --ink: #1c1713;
  --ink-soft: #3e352e;
  --muted: #746a60;
  --muted-light: #a4998d;
  --line: #e5dbcf;
  --line-dark: #d6c9ba;
  --orange: #ff5a1f;
  --orange-dark: #e8440d;
  --orange-soft: #ffede2;
  --pink: #ff2d55;
  --gold: #ffb020;
  --green: #137a48;
  --green-soft: #e9f6ef;
  --dark: #1c1713;
  --dark-soft: #2a211b;
  --shadow-sm: 0 2px 8px rgba(68, 43, 22, 0.05), 0 12px 30px rgba(68, 43, 22, 0.05);
  --shadow-md: 0 8px 26px rgba(68, 43, 22, 0.07), 0 28px 70px rgba(68, 43, 22, 0.08);
  --shadow-lg: 0 40px 110px rgba(78, 42, 12, 0.18);
  --font: "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", "Consolas", "Liberation Mono", monospace;
  --container: min(1180px, calc(100% - 48px));
  --radius: 22px;
}

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

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

section[id] {
  scroll-margin-top: 90px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(1100px 620px at 80% -4%, rgba(255, 167, 74, 0.2), transparent 64%),
    radial-gradient(820px 560px at -8% 8%, rgba(255, 45, 85, 0.05), transparent 62%),
    var(--bg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

svg {
  display: block;
}

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

button {
  font: inherit;
  color: inherit;
}

code {
  padding: 2px 6px;
  border: 1px solid rgba(224, 212, 198, 0.8);
  border-radius: 5px;
  color: #5d4b3a;
  background: rgba(255, 255, 255, 0.66);
  font-family: var(--mono);
  font-size: 0.86em;
}

strong {
  font-weight: 750;
}

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

:focus-visible {
  outline: 3px solid rgba(255, 90, 31, 0.38);
  outline-offset: 3px;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1000;
  padding: 10px 16px;
  border-radius: 8px;
  color: #fff;
  background: var(--dark);
  transition: top 160ms ease;
}

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

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-size: 14px;
  font-weight: 680;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease,
    border-color 180ms ease, color 180ms ease;
}

.button svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.99);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #ff8a19 0%, #ff5a1f 45%, #ff2d55 120%);
  box-shadow: 0 12px 26px rgba(255, 76, 28, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.button-primary:hover {
  box-shadow: 0 17px 36px rgba(255, 76, 28, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.34);
}

.button-dark {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 8px 20px rgba(28, 23, 19, 0.17);
}

.button-dark:hover {
  background: #2c241e;
  box-shadow: 0 12px 26px rgba(28, 23, 19, 0.22);
}

.button-ghost {
  color: var(--ink-soft);
  border-color: var(--line-dark);
  background: rgba(255, 255, 255, 0.55);
}

.button-ghost:hover {
  border-color: #c7b7a5;
  background: #fff;
}

.button-large {
  height: 54px;
  padding: 0 24px;
  border-radius: 14px;
  font-size: 15px;
}

.button-small {
  height: 38px;
  padding: 0 15px;
  border-radius: 10px;
  font-size: 12.5px;
}

.button-small svg {
  width: 15px;
  height: 15px;
}

.button-block {
  width: 100%;
}

.button-light-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
}

.button-light-outline:hover {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.16);
}

.is-disabled {
  pointer-events: none;
  opacity: 0.62;
  cursor: default;
}

/* --------------------------------------------------------------------------
   顶部导航
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color 220ms ease, border-color 220ms ease,
    backdrop-filter 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled,
.site-header.nav-open {
  border-bottom-color: rgba(219, 207, 194, 0.7);
  background: rgba(247, 242, 234, 0.88);
  box-shadow: 0 6px 26px rgba(63, 42, 24, 0.05);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  border-radius: 10px;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  box-shadow: 0 6px 16px rgba(255, 78, 30, 0.24);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 15px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand-text small {
  margin-top: 3px;
  color: var(--muted-light);
  font-size: 8.5px;
  font-weight: 750;
  letter-spacing: 0.16em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
  margin-right: 34px;
}

.nav-links a {
  position: relative;
  padding: 7px 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 570;
  transition: color 160ms ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 3px;
  left: 0;
  height: 1.5px;
  border-radius: 99px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 200ms ease;
}

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

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
}

.menu-toggle span {
  width: 16px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  padding: 148px 0 0;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(5px);
}

.hero-glow-one {
  top: 100px;
  right: -140px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(255, 172, 84, 0.2), transparent 68%);
}

.hero-glow-two {
  bottom: 40px;
  left: -220px;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(255, 45, 85, 0.055), transparent 68%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
  gap: 54px;
}

.hero-copy {
  padding-bottom: 36px;
}

.eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  height: 23px;
  padding: 0 8px;
  border-radius: 5px;
  color: #fff;
  background: var(--ink);
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hero h1 {
  max-width: 690px;
  margin: 0;
  font-size: clamp(50px, 6.4vw, 82px);
  font-weight: 860;
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.headline-accent {
  position: relative;
  display: inline-block;
  color: var(--orange);
  white-space: nowrap;
  isolation: isolate;
}

.headline-accent::after {
  content: "";
  position: absolute;
  right: 1%;
  bottom: 0.06em;
  left: 1%;
  height: 0.12em;
  border-radius: 99px;
  background: linear-gradient(90deg, rgba(255, 138, 25, 0.32), rgba(255, 45, 85, 0.18));
  z-index: -1;
  transform: rotate(-0.6deg);
}

.hero-lead {
  max-width: 560px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.8;
}

.hero-lead strong {
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 28px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 11.5px;
  list-style: none;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-points svg {
  width: 14px;
  height: 14px;
  color: var(--green);
}

.hero-visual {
  position: relative;
  justify-self: end;
  width: min(100%, 570px);
  padding: 18px 0 28px;
}

.visual-orbit {
  position: absolute;
  border: 1px dashed rgba(206, 181, 156, 0.54);
  border-radius: 50%;
  pointer-events: none;
}

.orbit-one {
  top: -18px;
  right: -72px;
  width: 420px;
  height: 420px;
}

.orbit-two {
  right: -20px;
  bottom: -36px;
  width: 250px;
  height: 250px;
  opacity: 0.65;
}

.browser-mock {
  position: relative;
  z-index: 2;
  overflow: hidden;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 50px 100px rgba(85, 46, 16, 0.18), 0 12px 30px rgba(85, 46, 16, 0.08);
  transform: rotate(1.4deg);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 45px;
  padding: 0 14px;
  border-bottom: 1px solid #f0ebe5;
  background: #fbfaf8;
}

.window-dots {
  display: flex;
  gap: 5px;
}

.window-dots i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #d6cec6;
}

.window-dots i:nth-child(1) {
  background: #e9a497;
}

.window-dots i:nth-child(2) {
  background: #ebcf94;
}

.window-dots i:nth-child(3) {
  background: #a8c6a2;
}

.address-bar {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 5px;
  height: 23px;
  padding: 0 9px;
  overflow: hidden;
  border-radius: 6px;
  color: #9b9188;
  background: #f2eee9;
  font-size: 8px;
  white-space: nowrap;
}

.address-bar svg {
  width: 11px;
  height: 11px;
  flex: 0 0 auto;
  color: #8b8279;
}

.browser-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  color: #fff;
  background: linear-gradient(135deg, #ff8a19, #ff2d55);
  font-size: 8px;
  font-weight: 700;
}

.browser-body {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 16px;
  padding: 17px 17px 13px;
}

.mock-photo {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1.02 / 1;
  overflow: hidden;
  border-radius: 13px;
  background:
    radial-gradient(circle at 28% 22%, rgba(255, 255, 255, 0.7), transparent 30%),
    linear-gradient(145deg, #ffe8d3 0%, #f6c9ad 54%, #eab09f 100%);
}

.photo-halo {
  position: absolute;
  top: 16%;
  left: 23%;
  width: 54%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(255, 251, 241, 0.52);
  filter: blur(2px);
}

.product-bag {
  position: absolute;
  bottom: 19%;
  left: 50%;
  width: 47%;
  height: 37%;
  transform: translateX(-50%) rotate(-4deg);
  z-index: 2;
}

.bag-handle {
  position: absolute;
  top: -44%;
  left: 50%;
  width: 53%;
  height: 60%;
  border: 7px solid #a45f34;
  border-bottom: 0;
  border-radius: 60px 60px 0 0;
  transform: translateX(-50%);
  opacity: 0.92;
}

.bag-body {
  position: absolute;
  inset: 0;
  border-radius: 15% 15% 20% 20%;
  background:
    linear-gradient(100deg, rgba(255, 255, 255, 0.18), transparent 38%),
    linear-gradient(150deg, #c27a47 0%, #9d572d 72%, #80411e 100%);
  box-shadow: 0 13px 22px rgba(117, 56, 19, 0.28), inset 0 1px 1px rgba(255, 255, 255, 0.2);
}

.bag-body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 26%;
  border-radius: 15% 15% 50% 50%;
  background: rgba(62, 29, 11, 0.11);
}

.bag-clasp {
  position: absolute;
  top: 39%;
  left: 50%;
  width: 14%;
  aspect-ratio: 1.3;
  border: 1.5px solid rgba(255, 230, 171, 0.8);
  border-radius: 2px;
  transform: translateX(-50%);
  box-shadow: 0 2px 4px rgba(62, 29, 11, 0.2);
}

.photo-shadow {
  position: absolute;
  bottom: 14%;
  left: 50%;
  width: 48%;
  height: 8%;
  border-radius: 50%;
  background: rgba(103, 48, 19, 0.2);
  filter: blur(7px);
  transform: translateX(-50%);
}

.mock-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 7px;
}

.mock-thumbs span {
  aspect-ratio: 1;
  border-radius: 5px;
  background: linear-gradient(145deg, #f1e6da, #dfcbb9);
}

.mock-thumbs span:nth-child(2) {
  background: linear-gradient(145deg, #e3ecf1, #c5d6df);
}

.mock-thumbs span:nth-child(3) {
  background: linear-gradient(145deg, #ece8df, #d5cbbb);
}

.mock-thumbs span:nth-child(4) {
  background: linear-gradient(145deg, #f0e4dc, #dbc4b6);
}

.mock-thumbs span.active {
  outline: 1.5px solid var(--orange);
  outline-offset: 1px;
}

.mock-product-info {
  padding-top: 3px;
}

.mock-brand {
  display: inline-block;
  color: var(--orange);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.mock-title {
  margin: 7px 0 0;
  color: #27211c;
  font-size: 15.5px;
  font-weight: 760;
  line-height: 1.35;
  letter-spacing: -0.03em;
}

.mock-title span {
  display: block;
  margin-top: 2px;
  color: #8e8379;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0;
}

.mock-price-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin-top: 11px;
}

.mock-price {
  color: #f04413;
  font-size: 21px;
  font-weight: 850;
  letter-spacing: -0.04em;
}

.mock-old-price {
  color: #b7aca1;
  font-size: 8px;
  text-decoration: line-through;
}

.mock-sales {
  margin-left: auto;
  color: #a1978d;
  font-size: 7.5px;
}

.mock-tags {
  display: flex;
  gap: 4px;
  margin-top: 9px;
}

.mock-tags span {
  padding: 2px 5px;
  border: 1px solid #f0d6c6;
  border-radius: 3px;
  color: #b5663c;
  background: #fff8f3;
  font-size: 6.5px;
}

.mock-divider {
  height: 1px;
  margin: 11px 0 9px;
  background: #f1ece7;
}

.mock-lines {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.mock-lines span {
  width: 90%;
  height: 5px;
  border-radius: 99px;
  background: #f1ece7;
}

.mock-lines span.short {
  width: 58%;
}

.mock-buy-row {
  display: flex;
  gap: 5px;
  margin-top: 14px;
}

.mock-buy-btn {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  height: 25px;
  border: 1px solid #f1c7b5;
  border-radius: 6px;
  color: #c2532a;
  background: #fff6ef;
  font-size: 7.5px;
  font-weight: 650;
}

.mock-buy-btn.solid {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, #ff7a18, #ff3c2a);
}

.mock-detail-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 0 17px 23px;
}

.mock-detail-strip span {
  height: 47px;
  border-radius: 6px;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.34), transparent),
    #eee6de;
}

.mock-detail-strip span:nth-child(2) {
  background: #e5ded6;
}

.mock-detail-strip span:nth-child(3) {
  background: #f2e7dd;
}

.mock-detail-strip span:nth-child(4) {
  background: #e8e1d9;
}

.mock-floating-button {
  position: absolute;
  right: 19px;
  bottom: 19px;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 7px;
  height: 39px;
  padding: 0 15px 0 9px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #ff8a19 0%, #ff5a1f 46%, #ff2d55 115%);
  box-shadow: 0 12px 26px rgba(255, 70, 30, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.mock-float-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.mock-float-icon svg {
  width: 15px;
  height: 15px;
}

.float-card {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 13px;
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 13px;
  background: rgba(255, 253, 249, 0.92);
  box-shadow: 0 18px 38px rgba(76, 42, 17, 0.16);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.float-card strong {
  display: block;
  color: var(--ink);
  font-size: 10.5px;
  font-weight: 720;
  line-height: 1.3;
}

.float-card small {
  display: block;
  margin-top: 2px;
  color: var(--muted-light);
  font-size: 8px;
  line-height: 1.3;
}

.float-card-count {
  top: 61px;
  right: -30px;
  animation: float-soft 5s ease-in-out infinite;
}

.float-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 9px;
  color: var(--green);
  background: var(--green-soft);
}

.float-card-icon svg {
  width: 16px;
  height: 16px;
}

.float-card-png {
  bottom: 69px;
  left: -34px;
  animation: float-soft 6s ease-in-out -2.2s infinite;
}

.png-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 30px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #ff8a19, #ff2d55);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.06em;
}

@keyframes float-soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

.platform-strip {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 56px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.platform-label {
  color: var(--muted-light);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.platform-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 25px;
}

.platform-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
}

.platform-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.taobao { background: #ff5000; }
.tmall { background: #ff0036; }
.jd { background: #e1251b; }
.pdd { background: #e02e24; }

.platform-note {
  margin-left: auto;
  color: var(--muted-light);
  font-size: 10.5px;
  text-align: right;
}

/* --------------------------------------------------------------------------
   区块通用
   -------------------------------------------------------------------------- */

.section {
  padding: 106px 0;
}

.section-heading {
  max-width: 640px;
}

.section-kicker {
  margin: 0 0 16px;
  color: var(--orange-dark);
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.17em;
}

.section-kicker.light {
  color: #ffad7c;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(36px, 4.2vw, 54px);
  font-weight: 840;
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.section-heading > p:not(.section-kicker) {
  max-width: 560px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

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

.section-heading.centered > p {
  margin-right: auto;
  margin-left: auto;
}

.mobile-break {
  display: none;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 24px;
  color: var(--orange-dark);
  font-size: 12.5px;
  font-weight: 700;
  border-radius: 4px;
}

.text-link svg {
  width: 15px;
  height: 15px;
  transition: transform 160ms ease;
}

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

.text-link.light {
  color: #ffc1a1;
}

/* --------------------------------------------------------------------------
   功能
   -------------------------------------------------------------------------- */

.features-section {
  position: relative;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
  margin-top: 46px;
}

.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 255px;
  padding: 28px;
  border: 1px solid rgba(225, 215, 204, 0.78);
  border-radius: var(--radius);
  background: rgba(255, 253, 249, 0.76);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 145, 92, 0.4);
  box-shadow: var(--shadow-md);
}

.feature-card:not(.feature-large) {
  grid-column: span 2;
}

.feature-large {
  grid-column: span 6;
  display: grid;
  grid-template-columns: 1fr 0.94fr;
  gap: 44px;
  align-items: center;
  min-height: 300px;
  padding: 38px 38px 38px 40px;
}

.feature-main {
  min-width: 0;
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 49px;
  height: 49px;
  margin-bottom: 23px;
  border-radius: 13px;
  color: var(--orange-dark);
  background: var(--orange-soft);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.feature-large .feature-icon {
  width: 53px;
  height: 53px;
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 27px;
  height: 27px;
}

.feature-number {
  color: var(--muted-light);
  font-size: 9.5px;
  font-weight: 750;
  letter-spacing: 0.14em;
}

.feature-card h3,
.feature-body h3 {
  margin: 8px 0 0;
  font-size: 20px;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.feature-large h3 {
  font-size: 29px;
  letter-spacing: -0.035em;
}

.feature-card p,
.feature-body p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.feature-large p {
  max-width: 470px;
  font-size: 13.5px;
}

.feature-art {
  position: relative;
  height: 228px;
  border-radius: 17px;
  background:
    radial-gradient(400px 180px at 68% 12%, rgba(255, 104, 48, 0.16), transparent 62%),
    #1e1814;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.feature-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}

.art-thumb {
  position: absolute;
  z-index: 2;
  width: 31%;
  aspect-ratio: 0.82 / 1;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 9px;
  background: linear-gradient(145deg, #ffd5ba, #c06d43);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.24);
}

.art-thumb.one {
  top: 30px;
  left: 23px;
  transform: rotate(-4deg);
}

.art-thumb.two {
  top: 20px;
  left: 36%;
  background: linear-gradient(145deg, #d8e9f0, #7c9dac);
  transform: rotate(2deg);
}

.art-thumb.three {
  top: 38px;
  right: 22px;
  background: linear-gradient(145deg, #e9e0ce, #a18965);
  transform: rotate(5deg);
}

.art-thumb::after {
  content: "";
  position: absolute;
  right: 22%;
  bottom: 13%;
  left: 22%;
  height: 29%;
  border-radius: 5px 5px 8px 8px;
  background: rgba(64, 32, 16, 0.3);
}

.scan-line {
  position: absolute;
  top: -10%;
  left: 0;
  z-index: 3;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #ff8150 30%, #ffd0b0 50%, #ff8150 70%, transparent);
  box-shadow: 0 0 16px rgba(255, 104, 48, 0.7);
  animation: scan 4.6s ease-in-out infinite;
}

@keyframes scan {
  0%, 8% { top: 8%; opacity: 0; }
  16% { opacity: 1; }
  65% { top: 74%; opacity: 1; }
  80%, 100% { top: 92%; opacity: 0; }
}

.art-code {
  position: absolute;
  right: 20px;
  bottom: 17px;
  left: 20px;
  z-index: 4;
  overflow: hidden;
  color: rgba(255, 219, 197, 0.72);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0.8;
}

/* --------------------------------------------------------------------------
   使用流程
   -------------------------------------------------------------------------- */

.how-section {
  padding-top: 82px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}

.step {
  position: relative;
  padding: 34px 34px 0 0;
}

.step + .step {
  padding-left: 34px;
  border-left: 1px solid var(--line);
}

.step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 5px var(--bg);
}

.step + .step::before {
  left: 34px;
}

.step-number {
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  margin: 21px 0 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--ink-soft);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}

.step-icon svg {
  width: 29px;
  height: 29px;
}

.step h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 740;
  letter-spacing: -0.025em;
}

.step p {
  max-width: 320px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   图库展示
   -------------------------------------------------------------------------- */

.showcase {
  position: relative;
  padding: 110px 0;
  color: #fff;
  background:
    radial-gradient(720px 480px at 78% 16%, rgba(255, 111, 49, 0.17), transparent 64%),
    radial-gradient(620px 420px at 8% 92%, rgba(255, 45, 85, 0.08), transparent 65%),
    var(--dark);
  overflow: hidden;
}

.showcase::before {
  content: "";
  position: absolute;
  top: -240px;
  right: 4%;
  width: 540px;
  height: 540px;
  border: 1px solid rgba(255, 255, 255, 0.055);
  border-radius: 50%;
}

.showcase::after {
  content: "";
  position: absolute;
  top: -150px;
  right: 9%;
  width: 380px;
  height: 380px;
  border: 1px solid rgba(255, 255, 255, 0.045);
  border-radius: 50%;
}

.showcase-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  align-items: center;
  gap: 66px;
}

.showcase-copy h2 {
  margin: 0;
  font-size: clamp(38px, 4.3vw, 56px);
  font-weight: 840;
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.showcase-copy > p:not(.section-kicker) {
  max-width: 390px;
  margin: 21px 0 0;
  color: #b9ada2;
  font-size: 14.5px;
  line-height: 1.8;
}

.showcase-list {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.showcase-list li {
  display: flex;
  align-items: baseline;
  gap: 13px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #d9cfc5;
  font-size: 12.5px;
}

.showcase-list span {
  color: #ff9b6e;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.08em;
}

.gallery-mock {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  background: #f7f3ed;
  box-shadow: 0 50px 100px rgba(0, 0, 0, 0.36);
  color: var(--ink);
  transform: rotate(-1.1deg);
}

.gallery-mock-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 45px;
  padding: 0 16px;
  border-bottom: 1px solid #e9e1d8;
  border-radius: 20px 20px 0 0;
  background: rgba(255, 253, 249, 0.9);
}

.mini-brand {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 9.5px;
  font-weight: 730;
}

.mini-brand img {
  width: 23px;
  height: 23px;
  border-radius: 6px;
}

.mini-actions {
  display: flex;
  gap: 5px;
}

.mini-actions i {
  width: 17px;
  height: 17px;
  border-radius: 5px;
  background: #f0ebe5;
}

.gallery-mock-head {
  padding: 18px 20px 14px;
}

.mini-kicker {
  display: block;
  margin-bottom: 6px;
  color: var(--orange-dark);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.gallery-mock-head strong {
  display: block;
  font-size: 20px;
  font-weight: 840;
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.gallery-mock-head em {
  color: var(--orange);
  font-style: normal;
}

.mini-source {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 8px;
  color: var(--muted-light);
  font-size: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mini-source b {
  padding: 2px 5px;
  border-radius: 3px;
  color: var(--orange-dark);
  background: var(--orange-soft);
  font-size: 7px;
}

.gallery-mock-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 14px 12px;
  padding: 7px 8px 7px 9px;
  border: 1px solid #e9e1d8;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.86);
}

.mini-check {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #5c5148;
  font-size: 8px;
  font-weight: 650;
}

.mini-check svg {
  width: 13px;
  height: 13px;
  padding: 1px;
  border: 1px solid #d1c5b8;
  border-radius: 4px;
  color: #fff;
  background: #fff;
}

.mini-check.checked svg {
  border-color: var(--orange);
  background: var(--orange);
}

.mini-count {
  color: var(--muted-light);
  font-size: 7.5px;
}

.mini-download {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 23px;
  margin-left: auto;
  padding: 0 8px;
  border-radius: 6px;
  color: #fff;
  background: linear-gradient(135deg, #ff7a18, #ff3c2a);
  font-size: 7.5px;
  font-weight: 700;
}

.mini-download svg {
  width: 11px;
  height: 11px;
}

.gallery-mock-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 0 14px 18px;
}

.mini-card {
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 3px 10px rgba(60, 38, 20, 0.06);
}

.mini-card.selected {
  border-color: var(--orange);
  box-shadow: 0 0 0 2px rgba(255, 90, 31, 0.12);
}

.mini-card-check {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 4px;
  color: transparent;
  background: rgba(25, 20, 17, 0.28);
  backdrop-filter: blur(5px);
}

.mini-card.selected .mini-card-check {
  color: #fff;
  border-color: var(--orange);
  background: var(--orange);
}

.mini-card-check svg {
  width: 9px;
  height: 9px;
}

.mini-photo {
  position: relative;
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
}

.photo-bag {
  background: linear-gradient(145deg, #f7dfc9, #dca17e);
}

.photo-bag::before {
  content: "";
  position: absolute;
  right: 21%;
  bottom: 16%;
  left: 21%;
  height: 38%;
  border-radius: 5px 5px 8px 8px;
  background: linear-gradient(140deg, #b86d3e, #8e4a25);
}

.photo-bag::after {
  content: "";
  position: absolute;
  bottom: 44%;
  left: 50%;
  width: 28%;
  height: 23%;
  border: 4px solid #a45c31;
  border-bottom: 0;
  border-radius: 40px 40px 0 0;
  transform: translateX(-50%);
}

.photo-watch {
  background: linear-gradient(145deg, #e5edf1, #b9ccd7);
}

.photo-watch::before {
  content: "";
  position: absolute;
  top: 27%;
  left: 50%;
  z-index: 2;
  width: 34%;
  aspect-ratio: 1;
  border: 4px solid #4d5c63;
  border-radius: 50%;
  background: #f5f2e9;
  transform: translateX(-50%);
  box-shadow: 0 0 0 3px #98abb5;
}

.photo-watch::after {
  content: "";
  position: absolute;
  top: 12%;
  left: 50%;
  z-index: 1;
  width: 13%;
  height: 76%;
  border-radius: 5px;
  background: #6f838d;
  transform: translateX(-50%);
}

.photo-chair {
  background: linear-gradient(145deg, #efe8dc, #cdbba2);
}

.photo-chair::before {
  content: "";
  position: absolute;
  top: 24%;
  left: 28%;
  width: 44%;
  height: 38%;
  border-radius: 14px 14px 5px 5px;
  background: linear-gradient(145deg, #b18a5c, #8f673e);
  transform: rotate(-4deg);
}

.photo-chair::after {
  content: "";
  position: absolute;
  top: 58%;
  left: 31%;
  width: 38%;
  height: 26%;
  border-right: 3px solid #765330;
  border-left: 3px solid #765330;
  box-shadow: inset 0 -4px 0 #9b764b;
}

.photo-shoe {
  background: linear-gradient(145deg, #f0dfdf, #d0a7a7);
}

.photo-shoe::before {
  content: "";
  position: absolute;
  top: 43%;
  left: 20%;
  width: 58%;
  height: 24%;
  border-radius: 55% 40% 35% 20%;
  background: linear-gradient(145deg, #f4eee4, #cbb9a6);
  transform: rotate(-8deg);
  box-shadow: 0 4px 7px rgba(97, 70, 46, 0.17);
}

.photo-shoe::after {
  content: "";
  position: absolute;
  top: 58%;
  left: 22%;
  width: 54%;
  height: 7%;
  border-radius: 99px;
  background: #8b7461;
  transform: rotate(-8deg);
}

.photo-bottle {
  background: linear-gradient(145deg, #e2ecdf, #a8c5a0);
}

.photo-bottle::before {
  content: "";
  position: absolute;
  top: 25%;
  left: 37%;
  width: 26%;
  height: 51%;
  border-radius: 12px 12px 9px 9px;
  background: linear-gradient(145deg, #4d7f63, #2f5d45);
  box-shadow: inset 5px 0 8px rgba(255, 255, 255, 0.14);
}

.photo-bottle::after {
  content: "";
  position: absolute;
  top: 17%;
  left: 44%;
  width: 12%;
  height: 11%;
  border-radius: 3px 3px 1px 1px;
  background: #355a45;
}

.photo-headphone {
  background: linear-gradient(145deg, #e2e2e9, #b0b1c5);
}

.photo-headphone::before {
  content: "";
  position: absolute;
  top: 24%;
  left: 50%;
  width: 47%;
  height: 45%;
  border: 7px solid #414250;
  border-bottom: 0;
  border-radius: 100px 100px 0 0;
  transform: translateX(-50%);
}

.photo-headphone::after {
  content: "";
  position: absolute;
  top: 56%;
  left: 24%;
  width: 22%;
  height: 26%;
  border-radius: 8px;
  background: #4c4e5d;
  box-shadow: 65px 0 0 #4c4e5d;
}

.mini-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 6px;
  color: var(--muted);
  font-size: 6.2px;
  font-variant-numeric: tabular-nums;
}

.mini-card-foot b {
  color: var(--muted-light);
  font-weight: 700;
}

.mini-card-foot i {
  font-style: normal;
}

.gallery-mock-toast {
  position: absolute;
  right: 25px;
  bottom: 29px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.94);
  background: rgba(24, 84, 51, 0.95);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  font-size: 8px;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

.toast-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6fe6a0;
  box-shadow: 0 0 0 3px rgba(111, 230, 160, 0.14);
}

/* --------------------------------------------------------------------------
   支持平台
   -------------------------------------------------------------------------- */

.platforms-section {
  padding-top: 112px;
}

.platforms-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
  align-items: start;
}

.site-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.site-card {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 105px;
  padding: 17px;
  border: 1px solid rgba(225, 215, 204, 0.82);
  border-radius: 16px;
  background: rgba(255, 253, 249, 0.76);
  box-shadow: var(--shadow-sm);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.site-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 145, 92, 0.35);
  box-shadow: var(--shadow-md);
}

.site-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border-radius: 12px;
  color: #fff;
  font-size: 15px;
  font-weight: 820;
  letter-spacing: -0.04em;
}

.taobao-mark {
  background: linear-gradient(145deg, #ff7b29, #ff5000);
  box-shadow: 0 7px 16px rgba(255, 80, 0, 0.22);
}

.jd-mark {
  background: linear-gradient(145deg, #f24b42, #d81e12);
  box-shadow: 0 7px 16px rgba(216, 30, 18, 0.2);
  font-size: 12px;
}

.pdd-mark {
  background: linear-gradient(145deg, #f04c42, #dc251c);
  box-shadow: 0 7px 16px rgba(220, 37, 28, 0.2);
}

.site-card h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 720;
  letter-spacing: -0.015em;
}

.site-card p {
  margin: 5px 0 0;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 8.5px;
  line-height: 1.5;
  word-break: break-all;
}

.site-card p code {
  padding: 0;
  border: 0;
  background: transparent;
  font-size: inherit;
}

.site-status {
  align-self: flex-start;
  margin-left: auto;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--green);
  background: var(--green-soft);
  font-size: 7px;
  font-weight: 700;
  white-space: nowrap;
}

.site-card-note {
  grid-column: span 2;
  min-height: auto;
  padding: 16px 18px;
  background: rgba(255, 247, 239, 0.7);
  border-style: dashed;
}

.site-card:nth-child(3) {
  grid-column: span 2;
}

.site-note-icon {
  color: var(--orange-dark);
}

.site-note-icon svg {
  width: 22px;
  height: 22px;
}

.site-card-note p {
  margin: 0;
  color: var(--muted);
  font-family: var(--font);
  font-size: 12px;
  line-height: 1.65;
  word-break: normal;
}

/* --------------------------------------------------------------------------
   安装
   -------------------------------------------------------------------------- */

.install-section {
  position: relative;
  padding: 110px 0;
  border-top: 1px solid rgba(229, 219, 207, 0.8);
  border-bottom: 1px solid rgba(229, 219, 207, 0.8);
  background:
    radial-gradient(700px 500px at 86% 4%, rgba(255, 160, 75, 0.12), transparent 62%),
    rgba(255, 252, 247, 0.5);
}

.install-heading {
  max-width: 720px;
}

.install-heading h2 {
  margin: 0;
  font-size: clamp(38px, 4.5vw, 56px);
  font-weight: 840;
  line-height: 1.1;
  letter-spacing: -0.048em;
}

.install-heading > p:not(.section-kicker) {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.install-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(330px, 0.87fr);
  gap: 60px;
  align-items: start;
  margin-top: 48px;
}

.install-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}

.install-steps li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  padding: 27px 0;
  border-bottom: 1px solid var(--line);
}

.install-num {
  padding-top: 3px;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.install-content h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 740;
  letter-spacing: -0.025em;
}

.install-content p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.install-content p code {
  white-space: nowrap;
}

.download-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 6px 10px;
  border: 1px solid #ffd4bf;
  border-radius: 7px;
  color: var(--orange-dark);
  background: #fff7f2;
  font-size: 11px;
  font-weight: 700;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.download-inline:hover {
  border-color: #ffb995;
  background: #fff;
}

.download-inline svg {
  width: 14px;
  height: 14px;
}

.code-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 2px;
  vertical-align: baseline;
}

.copy-btn {
  padding: 2px 6px;
  border: 1px solid var(--line-dark);
  border-radius: 4px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.7);
  font-size: 9px;
  line-height: 1.5;
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}

.copy-btn:hover {
  color: var(--ink);
  border-color: #c8b7a4;
  background: #fff;
}

.copy-btn.is-copied {
  color: var(--green);
  border-color: #b8ddc8;
  background: var(--green-soft);
}

.install-aside {
  position: sticky;
  top: 100px;
}

.download-card {
  padding: 30px 28px 26px;
  border: 1px solid rgba(225, 215, 204, 0.9);
  border-radius: 23px;
  background: var(--paper);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.download-card > img {
  width: 64px;
  height: 64px;
  margin: 0 auto 15px;
  border-radius: 17px;
  box-shadow: 0 12px 25px rgba(255, 78, 30, 0.24);
}

.download-kicker {
  margin: 0;
  color: var(--muted-light);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.15em;
}

.download-card h3 {
  margin: 8px 0 0;
  font-size: 21px;
  font-weight: 780;
  letter-spacing: -0.03em;
}

.download-version {
  margin: 5px 0 20px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9.5px;
}

.download-note {
  margin: 10px 0 0;
  color: var(--muted-light);
  font-size: 9.5px;
}

.download-divider {
  height: 1px;
  margin: 23px 0 19px;
  background: var(--line);
}

.permission-list {
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.permission-list li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.6;
}

.permission-list strong {
  display: block;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 680;
}

.perm-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 27px;
  height: 27px;
  flex: 0 0 auto;
  border-radius: 7px;
  color: var(--green);
  background: var(--green-soft);
}

.perm-icon svg {
  width: 15px;
  height: 15px;
}

.tip-card {
  margin-top: 14px;
  padding: 16px 18px;
  border: 1px dashed #e7cdb8;
  border-radius: 14px;
  background: rgba(255, 247, 238, 0.72);
}

.tip-card-label {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--orange-dark);
  background: var(--orange-soft);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.tip-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */

.faq-section {
  padding-top: 112px;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 72px;
  align-items: start;
}

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

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 0;
  color: var(--ink);
  font-size: 15.5px;
  font-weight: 650;
  letter-spacing: -0.015em;
  list-style: none;
  cursor: pointer;
}

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

.faq-list summary i {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.faq-list summary i::before,
.faq-list summary i::after {
  content: "";
  position: absolute;
  width: 9px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--ink-soft);
  transition: transform 180ms ease, background-color 180ms ease;
}

.faq-list summary i::after {
  transform: rotate(90deg);
}

.faq-list details[open] summary i {
  border-color: var(--orange);
  background: var(--orange);
}

.faq-list details[open] summary i::before,
.faq-list details[open] summary i::after {
  background: #fff;
}

.faq-list details[open] summary i::after {
  transform: rotate(0);
}

.faq-answer {
  padding: 0 46px 22px 0;
  animation: faq-in 180ms ease;
}

.faq-answer p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

.faq-answer code {
  font-size: 0.84em;
}

@keyframes faq-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   隐私横幅
   -------------------------------------------------------------------------- */

.privacy-banner {
  padding: 0 0 100px;
}

.privacy-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 24px;
  overflow: hidden;
  padding: 34px 40px;
  border-radius: 24px;
  color: #fff;
  background:
    radial-gradient(560px 300px at 85% 20%, rgba(255, 102, 49, 0.32), transparent 62%),
    linear-gradient(128deg, #211913 0%, #2e2017 56%, #3a2117 100%);
  box-shadow: 0 28px 70px rgba(55, 31, 13, 0.2);
}

.privacy-inner::after {
  content: "";
  position: absolute;
  top: -110px;
  right: -40px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 50%;
}

.privacy-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 15px;
  color: #ffc09c;
  background: rgba(255, 255, 255, 0.06);
}

.privacy-icon svg {
  width: 28px;
  height: 28px;
}

.privacy-inner > div {
  flex: 1;
  min-width: 0;
}

.privacy-inner h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 780;
  letter-spacing: -0.035em;
}

.privacy-inner p {
  max-width: 620px;
  margin: 6px 0 0;
  color: #bfb2a6;
  font-size: 12.5px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */

.site-footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted-light);
  font-size: 10px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
}

.footer-brand img {
  border-radius: 7px;
}

.footer-copy {
  margin: 0;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-links a {
  border-radius: 3px;
  transition: color 150ms ease;
}

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

/* --------------------------------------------------------------------------
   滚动入场
   -------------------------------------------------------------------------- */

.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 650ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1120px) {
  .hero-grid {
    gap: 28px;
  }

  .float-card-count {
    right: -9px;
  }

  .float-card-png {
    left: -12px;
  }

  .showcase-grid {
    gap: 40px;
  }

  .feature-large {
    gap: 28px;
  }
}

@media (max-width: 980px) {
  :root {
    --container: min(100% - 36px, 900px);
  }

  .nav-links {
    gap: 22px;
    margin-right: 22px;
  }

  .hero {
    padding-top: 126px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-copy {
    max-width: 720px;
    padding-bottom: 0;
  }

  .hero h1 {
    font-size: clamp(50px, 8.5vw, 76px);
  }

  .hero-visual {
    justify-self: center;
    width: min(100%, 620px);
    margin-top: 10px;
  }

  .platform-strip {
    flex-wrap: wrap;
    gap: 14px 24px;
  }

  .platform-note {
    flex-basis: 100%;
    margin-left: 0;
    text-align: left;
  }

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

  .feature-large {
    grid-column: span 2;
    grid-template-columns: 1fr;
  }

  .feature-card:not(.feature-large) {
    grid-column: span 1;
  }

  .feature-art {
    height: 210px;
  }

  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .showcase-copy {
    max-width: 620px;
  }

  .showcase-copy > p:not(.section-kicker) {
    max-width: 540px;
  }

  .gallery-mock {
    width: min(100%, 680px);
    margin: 0 auto;
  }

  .platforms-grid,
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .site-cards {
    max-width: 720px;
  }

  .install-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .install-aside {
    position: static;
    max-width: 520px;
  }

  .download-card {
    text-align: left;
  }

  .download-card > img {
    margin-right: 0;
    margin-left: 0;
  }

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

@media (max-width: 760px) {
  :root {
    --container: calc(100% - 32px);
  }

  .nav-bar {
    height: 68px;
  }

  .nav-links {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - 68px);
    margin: 0;
    padding: 10px 16px 24px;
    overflow-y: auto;
    border-bottom: 1px solid var(--line);
    background: rgba(247, 242, 234, 0.98);
    box-shadow: 0 24px 40px rgba(56, 34, 17, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-header.nav-open .nav-links {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-links a {
    padding: 15px 4px;
    border-bottom: 1px solid rgba(229, 219, 207, 0.72);
    font-size: 15px;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-actions .button {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .brand-text strong {
    font-size: 14px;
  }

  .brand-text small {
    font-size: 7.5px;
  }

  .hero {
    padding-top: 108px;
  }

  .hero h1 {
    font-size: clamp(43px, 11.4vw, 64px);
    line-height: 1.06;
  }

  .headline-accent {
    white-space: normal;
  }

  .hero-lead {
    margin-top: 21px;
    font-size: 14.5px;
    line-height: 1.8;
  }

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

  .button-large {
    height: 50px;
    padding: 0 19px;
    font-size: 14px;
  }

  .hero-points {
    gap: 12px;
    font-size: 10.5px;
  }

  .hero-visual {
    width: 100%;
    padding-top: 0;
  }

  .browser-mock {
    transform: none;
  }

  .float-card {
    display: none;
  }

  .orbit-one,
  .orbit-two {
    display: none;
  }

  .platform-strip {
    margin-top: 40px;
  }

  .platform-label {
    flex-basis: 100%;
  }

  .platform-list {
    gap: 16px;
  }

  .platform-item {
    font-size: 12px;
  }

  .platform-note {
    font-size: 9.5px;
  }

  .section,
  .install-section,
  .showcase {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .section-heading h2,
  .install-heading h2 {
    font-size: clamp(31px, 8vw, 42px);
  }

  .mobile-break {
    display: block;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    margin-top: 34px;
  }

  .feature-large,
  .feature-card:not(.feature-large) {
    grid-column: span 1;
  }

  .feature-large {
    padding: 26px;
  }

  .feature-card {
    min-height: 0;
    padding: 25px;
  }

  .feature-art {
    height: 190px;
    margin-top: 10px;
  }

  .feature-large h3 {
    font-size: 25px;
  }

  .feature-icon {
    margin-bottom: 18px;
  }

  .steps {
    grid-template-columns: 1fr;
    border-top: 0;
    margin-top: 32px;
  }

  .step,
  .step + .step {
    padding: 26px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .step::before,
  .step + .step::before {
    top: -4px;
    left: 0;
  }

  .step-icon {
    margin: 16px 0 15px;
  }

  .step p {
    max-width: none;
  }

  .showcase {
    padding-top: 70px;
    padding-bottom: 80px;
  }

  .showcase-copy h2 {
    font-size: clamp(34px, 8.7vw, 46px);
  }

  .showcase-list li {
    font-size: 11.5px;
  }

  .gallery-mock {
    transform: none;
  }

  .gallery-mock-grid {
    gap: 6px;
    padding: 0 10px 14px;
  }

  .gallery-mock-toolbar {
    margin-right: 10px;
    margin-left: 10px;
  }

  .gallery-mock-head {
    padding-right: 14px;
    padding-left: 14px;
  }

  .gallery-mock-toast {
    right: 16px;
    bottom: 22px;
  }

  .platforms-grid {
    gap: 28px;
  }

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

  .site-card-note,
  .site-card:nth-child(3) {
    grid-column: span 1;
  }

  .install-grid {
    margin-top: 34px;
  }

  .install-steps li {
    grid-template-columns: 30px 1fr;
    gap: 13px;
    padding: 22px 0;
  }

  .install-content h3 {
    font-size: 17px;
  }

  .install-aside {
    max-width: none;
  }

  .download-card {
    padding: 25px 21px 22px;
  }

  .faq-grid {
    gap: 28px;
  }

  .faq-list summary {
    padding: 19px 0;
    font-size: 14px;
  }

  .faq-answer {
    padding-right: 0;
  }

  .privacy-banner {
    padding-bottom: 70px;
  }

  .privacy-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 24px;
  }

  .privacy-inner .button {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 520px) {
  .brand-text {
    display: none;
  }

  .hero h1 {
    font-size: clamp(40px, 12.6vw, 54px);
  }

  .eyebrow {
    font-size: 10px;
  }

  .eyebrow > span:last-child {
    display: none;
  }

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

  .hero-actions .button {
    width: 100%;
  }

  .browser-body {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .mock-product-media {
    display: grid;
    grid-template-columns: 1fr 50px;
    gap: 8px;
    align-items: start;
  }

  .mock-thumbs {
    grid-template-columns: 1fr;
    margin-top: 0;
  }

  .mock-product-info {
    display: none;
  }

  .mock-detail-strip {
    padding-bottom: 20px;
  }

  .mock-floating-button {
    right: 14px;
    bottom: 14px;
  }

  .mini-source {
    font-size: 7px;
  }

  .gallery-mock-head strong {
    font-size: 17px;
  }

  .mini-download {
    padding: 0 6px;
    font-size: 6.5px;
  }

  .mini-check {
    font-size: 7px;
  }

  .gallery-mock-toast {
    right: 10px;
    bottom: 16px;
    font-size: 7px;
  }

  .site-card {
    min-height: 96px;
  }

  .site-mark {
    width: 42px;
    height: 42px;
  }

  .feature-large {
    padding: 22px;
  }

  .feature-art {
    height: 170px;
  }

  .art-code {
    font-size: 7px;
  }

  .download-card {
    border-radius: 19px;
  }

  .footer-copy {
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}