/* ==========================================================================
   臻一浏览器 官网样式表
   - 无外部依赖（不引 CDN / 字体），便于境内备案与部署
   - 组件化：tokens → 基础 → 布局 → 组件 → 区块 → 响应式
   ========================================================================== */

/* ---------------------------------- tokens --------------------------------- */
:root {
  /* 品牌色 */
  --brand-700: #1e3ce0;
  --brand-600: #2b4eff;
  --brand-500: #4a68ff;
  --brand-200: #c9d4ff;
  --brand-100: #e6ecff;
  --brand-50: #f3f6ff;
  --teal-600: #00a893;
  --teal-500: #00c2a8;

  /* 中性色 */
  --ink-900: #0a0f1e;
  --ink-800: #131a2e;
  --ink-700: #1e2740;
  --ink-600: #333d59;
  --ink-500: #4b5672;
  --ink-400: #6d7791;
  --ink-300: #97a0b8;
  --ink-200: #c3cad9;
  --line: #e5e9f2;
  --line-soft: #eef1f8;
  --bg: #ffffff;
  --bg-soft: #f7f9fd;
  --bg-deep: #0a0f1e;

  /* 圆角与阴影 */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --shadow-xs: 0 1px 2px rgba(10, 15, 30, 0.06);
  --shadow-sm: 0 4px 12px -4px rgba(10, 15, 30, 0.1);
  --shadow-md: 0 14px 34px -16px rgba(10, 15, 30, 0.22);
  --shadow-lg: 0 40px 70px -30px rgba(10, 15, 30, 0.32);

  /* 尺寸 */
  --container: 1180px;
  --nav-h: 68px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

/* hidden 属性必须真的隐藏：组件类（.btn 等）写了 display 会盖掉浏览器默认值 */
[hidden] {
  display: none !important;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.72;
  color: var(--ink-600);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink-900);
  font-weight: 650;
  line-height: 1.24;
  letter-spacing: -0.015em;
}

p {
  margin: 0;
}

a {
  color: var(--brand-600);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

a:hover {
  color: var(--brand-700);
}

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

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

code,
kbd {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

button {
  font: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------- 布局 ----------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 880px;
}

.section {
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

.section--soft {
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.section--dark {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.72);
}

.section--dark h2,
.section--dark h3 {
  color: #fff;
}

/* -------------------------------- 排版工具 --------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 12px;
  border: 1px solid var(--brand-200);
  border-radius: 999px;
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-600);
}

.section--dark .eyebrow {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #cfe0ff;
}

.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}

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

.section-head h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  margin-bottom: 16px;
}

.section-head p {
  font-size: 17px;
  color: var(--ink-400);
}

.section--dark .section-head p {
  color: rgba(255, 255, 255, 0.62);
}

.text-gradient {
  background: linear-gradient(100deg, #4a68ff 0%, #00c2a8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ---------------------------------- 按钮 ----------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
    background 0.18s var(--ease), border-color 0.18s var(--ease),
    color 0.18s var(--ease);
}

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

.btn--primary {
  background: linear-gradient(180deg, var(--brand-500), var(--brand-600));
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(43, 78, 255, 0.62);
}

.btn--primary:hover {
  color: #fff;
  box-shadow: 0 16px 32px -12px rgba(43, 78, 255, 0.72);
}

.btn--ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--ink-800);
  box-shadow: var(--shadow-xs);
}

.btn--ghost:hover {
  border-color: var(--brand-200);
  color: var(--brand-700);
}

.btn--dark {
  background: var(--ink-900);
  color: #fff;
}

.btn--dark:hover {
  color: #fff;
  background: var(--ink-700);
}

.btn--sm {
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
  border-radius: var(--r-xs);
}

.btn--lg {
  height: 52px;
  padding: 0 28px;
  font-size: 16px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------------------------- 导航 ----------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px -18px rgba(10, 15, 30, 0.4);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--ink-900);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand:hover {
  color: var(--ink-900);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(140deg, var(--brand-600), #00a893);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
}

.nav__link {
  padding: 8px 14px;
  border-radius: var(--r-xs);
  color: var(--ink-500);
  font-size: 15px;
  font-weight: 500;
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  background: var(--brand-50);
  color: var(--brand-700);
}

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

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  border: 1px solid var(--ink-200);
  border-radius: var(--r-xs);
  background: #fff;
  color: var(--ink-800);
  box-shadow: var(--shadow-xs);
}

.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  display: block;
  width: 16px;
  height: 1.6px;
  margin: 0 auto;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: relative;
}

.nav__toggle span::before {
  top: -5px;
}

.nav__toggle span::after {
  top: 3.4px;
}

.nav.is-open .nav__toggle span {
  background: transparent;
}

.nav.is-open .nav__toggle span::before {
  transform: translateY(5px) rotate(45deg);
}

.nav.is-open .nav__toggle span::after {
  transform: translateY(-3.4px) rotate(-45deg);
}

/* ---------------------------------- Hero ----------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 96px;
  background:
    radial-gradient(900px 420px at 78% -8%, rgba(74, 104, 255, 0.14), transparent 62%),
    radial-gradient(760px 380px at 8% 6%, rgba(0, 194, 168, 0.1), transparent 60%),
    linear-gradient(180deg, #fbfcff 0%, #ffffff 72%);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(32px, 4.4vw, 54px);
  letter-spacing: -0.026em;
}

.hero__lead {
  margin-top: 22px;
  max-width: 520px;
  font-size: 17.5px;
  line-height: 1.78;
  color: var(--ink-400);
}

.hero__points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 26px;
  font-size: 14px;
  color: var(--ink-500);
}

.hero__points li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero__points li::before {
  content: "";
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--brand-100);
  background-image: linear-gradient(135deg, var(--brand-600), var(--teal-500));
  mask: radial-gradient(circle at center, transparent 3.4px, #000 3.6px);
  -webkit-mask: radial-gradient(circle at center, transparent 3.4px, #000 3.6px);
}

.hero .btn-row {
  margin-top: 34px;
}

.hero__note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ink-300);
}

/* 产品界面示意（纯 CSS 绘制，无图片依赖） */
.hero-mock {
  position: relative;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateZ(0);
}

.hero-mock::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 62%, rgba(10, 15, 30, 0.04));
}

.mock__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 14px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line-soft);
}

.mock__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-200);
}

.mock__dot:nth-child(1) {
  background: #ff5f57;
}

.mock__dot:nth-child(2) {
  background: #febc2e;
}

.mock__dot:nth-child(3) {
  background: #28c840;
}

.mock__title {
  margin-left: 8px;
  font-size: 12px;
  color: var(--ink-300);
  font-family: var(--font-mono);
}

.mock__body {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  min-height: 306px;
}

.mock__side {
  padding: 14px 10px;
  border-right: 1px solid var(--line-soft);
  background: #fcfdff;
}

.mock__side-label {
  padding: 0 8px 8px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-300);
}

.mock__item {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 8px;
  border-radius: 7px;
  font-size: 12px;
  color: var(--ink-500);
}

.mock__item i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-500);
  flex-shrink: 0;
}

.mock__item--active {
  background: var(--brand-50);
  color: var(--brand-700);
  font-weight: 600;
}

.mock__item--idle i {
  background: var(--ink-200);
}

.mock__main {
  padding: 16px 18px;
}

.mock__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 12px;
}

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

.mock__row dt {
  color: var(--ink-400);
}

.mock__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-700);
}

.mock__badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(0, 194, 168, 0.12);
  color: var(--teal-600);
  font-size: 11px;
  font-weight: 600;
}

.mock__foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: var(--r-xs);
  background: var(--bg-soft);
  font-size: 11.5px;
  color: var(--ink-400);
}

/* -------------------------------- 信任条 ---------------------------------- */
.trust {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: #fff;
}

.trust__inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
}

.trust__item {
  padding: 26px 24px;
  background: #fff;
}

.trust__num {
  display: block;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.trust__label {
  margin-top: 4px;
  font-size: 13px;
  color: var(--ink-400);
}

/* ---------------------------------- 卡片 ----------------------------------- */
.grid {
  display: grid;
  gap: 20px;
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card {
  position: relative;
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.card:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 11px;
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  color: var(--brand-600);
}

.card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.card p {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-400);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.tag {
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--ink-400);
}

/* --------------------------------- 工作流 ---------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 28px 26px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-600);
}

.step h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.step p {
  font-size: 14px;
  color: var(--ink-400);
}

/* --------------------------------- 场景 ------------------------------------ */
.scene {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.scene__card {
  display: flex;
  flex-direction: column;
  padding: 30px 26px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.scene__card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.scene__card p {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(255, 255, 255, 0.6);
}

.scene__card ul {
  margin-top: 16px;
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.68);
}

.scene__card li {
  display: flex;
  gap: 8px;
}

.scene__card li::before {
  content: "";
  width: 5px;
  height: 5px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--teal-500);
  flex-shrink: 0;
}

/* ---------------------------------- 表格 ----------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14.5px;
}

thead th {
  padding: 14px 18px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-500);
  white-space: nowrap;
}

tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-500);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody td:first-child {
  color: var(--ink-800);
  font-weight: 600;
}

.cell-yes {
  color: var(--teal-600);
  font-weight: 600;
}

.cell-no {
  color: var(--ink-300);
}

/* ---------------------------------- CTA ------------------------------------ */
.cta {
  position: relative;
  overflow: hidden;
  padding: 64px 56px;
  border-radius: var(--r-xl);
  background: linear-gradient(120deg, #0f1730 0%, #1b2a6b 52%, #0b3b46 100%);
  color: #fff;
  text-align: center;
}

.cta::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto;
  height: 380px;
  background: radial-gradient(closest-side, rgba(74, 104, 255, 0.4), transparent);
  pointer-events: none;
}

.cta h2 {
  position: relative;
  font-size: clamp(24px, 3vw, 34px);
  margin-bottom: 14px;
}

.cta p {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.66);
  font-size: 15.5px;
}

.cta .btn-row {
  position: relative;
  justify-content: center;
  margin-top: 30px;
}

.cta .btn--ghost {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.24);
  color: #fff;
}

.cta .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

/* ---------------------------------- 页脚 ----------------------------------- */
.footer {
  padding: 64px 0 32px;
  background: #fbfcfe;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 40px;
}

.footer__brand p {
  max-width: 300px;
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.74;
  color: var(--ink-400);
}

.footer h4 {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-300);
  text-transform: uppercase;
}

.footer__links {
  display: grid;
  gap: 10px;
  font-size: 14px;
}

.footer__links a {
  color: var(--ink-500);
}

.footer__links a:hover {
  color: var(--brand-600);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--ink-300);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}

.footer__legal a {
  color: var(--ink-400);
}

.footer__legal a:hover {
  color: var(--brand-600);
}

/* ------------------------------- 内页 hero -------------------------------- */
.page-hero {
  padding: 72px 0 56px;
  background:
    radial-gradient(760px 320px at 82% -20%, rgba(74, 104, 255, 0.12), transparent 62%),
    linear-gradient(180deg, #fbfcff, #fff);
  border-bottom: 1px solid var(--line-soft);
}

.page-hero h1 {
  font-size: clamp(28px, 3.6vw, 42px);
}

.page-hero p {
  max-width: 640px;
  margin-top: 16px;
  font-size: 16.5px;
  color: var(--ink-400);
}

/* ------------------------------- 正文排版 --------------------------------- */
.prose {
  max-width: 780px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--ink-500);
}

.prose h2 {
  margin: 44px 0 14px;
  font-size: 21px;
}

.prose h3 {
  margin: 30px 0 10px;
  font-size: 17px;
}

.prose p {
  margin-bottom: 14px;
}

.prose ul,
.prose ol {
  margin: 0 0 16px;
  padding-left: 22px;
  list-style: revert;
}

.prose li {
  margin-bottom: 8px;
}

.prose li::marker {
  color: var(--ink-300);
}

.prose strong {
  color: var(--ink-800);
  font-weight: 600;
}

.prose hr {
  margin: 40px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.notice {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--brand-500);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--brand-50);
  font-size: 14px;
  color: var(--ink-600);
}

.notice strong {
  color: var(--brand-700);
}

/* -------------------------------- 下载页 ---------------------------------- */
.dl-card {
  display: grid;
  gap: 18px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.dl-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.dl-card__ver {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-400);
}

.dl-meta {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.dl-meta div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 16px;
  background: #fff;
  font-size: 13.5px;
}

.dl-meta dt {
  color: var(--ink-400);
}

.dl-meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-700);
  text-align: right;
  word-break: break-all;
}

/* ------------------------------- 空状态/占位 ------------------------------ */
.placeholder {
  padding: 40px 24px;
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
  background: var(--bg-soft);
  text-align: center;
  font-size: 14px;
  color: var(--ink-400);
}

/* --------------------------------- 动效 ----------------------------------- */
/* 仅在脚本可用（html.js）时才隐藏待入场元素，避免脚本失效导致内容不可见 */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

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

  .reveal,
  .card,
  .btn {
    transition: none;
  }

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

/* -------------------------------- 响应式 ---------------------------------- */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 44px;
  }

  .hero {
    padding: 64px 0 76px;
  }

  .hero-mock {
    max-width: 620px;
  }

  .grid--3,
  .steps,
  .scene {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .section {
    padding: 72px 0;
  }
}

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

  .nav__toggle {
    display: grid;
    place-items: center;
  }

  .nav__actions {
    display: none;
  }

  .nav.is-open {
    box-shadow: var(--shadow-md);
  }

  .nav.is-open .nav__links {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 20px 22px;
    margin: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open .nav__link {
    padding: 12px 14px;
    font-size: 15.5px;
  }

  .nav.is-open .nav__actions {
    display: flex;
    position: absolute;
    top: calc(var(--nav-h) + 232px);
    left: 0;
    right: 0;
    padding: 0 20px 18px;
    margin: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    border-radius: 0 0 var(--r-md) var(--r-md);
  }

  .nav.is-open .nav__actions .btn {
    flex: 1;
  }

  .grid--2,
  .grid--3,
  .steps,
  .scene {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-head {
    margin-bottom: 36px;
  }

  .cta {
    padding: 44px 24px;
    border-radius: var(--r-lg);
  }

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

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

@media (max-width: 560px) {
  .container {
    padding: 0 18px;
  }

  .section {
    padding: 56px 0;
  }

  .hero {
    padding: 48px 0 60px;
  }

  .hero__lead {
    font-size: 16px;
  }

  .btn-row .btn {
    flex: 1 1 100%;
  }

  .mock__body {
    grid-template-columns: minmax(0, 1fr);
    min-height: 270px;
  }

  /* 窄屏下隐藏侧栏，只保留参数表，避免文字被挤成竖排 */
  .mock__side {
    display: none;
  }

  .mock__foot {
    flex-wrap: wrap;
  }

  .mock__foot .mock__badge {
    white-space: nowrap;
  }

  .trust__label {
    font-size: 12.5px;
    line-height: 1.5;
  }

  .mock__main {
    padding: 12px 12px;
  }

  .mock__row {
    font-size: 11px;
  }

  .mock__row dd {
    font-size: 10.5px;
  }

  .trust__item {
    padding: 20px 18px;
  }

  .trust__num {
    font-size: 20px;
  }

  .card,
  .step,
  .scene__card {
    padding: 22px 20px;
  }
}

/* -------------------------------- 表单 / 账号 ------------------------------- */
.form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 7px;
}

.field > label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-700);
}

.input {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  color: var(--ink-800);
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.input::placeholder {
  color: var(--ink-300);
}

.input:hover {
  border-color: var(--ink-200);
}

.input:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(74, 104, 255, 0.14);
}

.field__hint {
  font-size: 12.5px;
  color: var(--ink-300);
}

.field--row {
  display: flex;
  gap: 10px;
}

.field--row .input {
  flex: 1;
}

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13.5px;
  color: var(--ink-400);
}

.auth {
  display: grid;
  place-items: center;
  min-height: calc(100vh - var(--nav-h) - 220px);
  padding: 64px 0 88px;
  background:
    radial-gradient(720px 300px at 50% -10%, rgba(74, 104, 255, 0.12), transparent 62%),
    linear-gradient(180deg, #fbfcff, #fff);
}

.auth__card {
  width: 100%;
  max-width: 420px;
  padding: 34px 32px 30px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: var(--shadow-md);
}

.auth__card h1 {
  font-size: 22px;
  margin-bottom: 8px;
}

.auth__card > p {
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--ink-400);
}

.auth__alt {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--ink-400);
  text-align: center;
}

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

.btn[disabled],
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.58;
  box-shadow: none;
}

/* --------------------------- 微信小程序入口弹层 ---------------------------- */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: 20px;
}

.qr-modal[hidden] {
  display: none;
}

.qr-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 15, 30, 0.55);
  backdrop-filter: blur(2px);
}

.qr-modal__card {
  position: relative;
  width: 100%;
  max-width: 400px;
  padding: 28px 26px 22px;
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.qr-modal__card h2 {
  font-size: 19px;
  margin-bottom: 8px;
}

.qr-modal__lead {
  font-size: 13.5px;
  color: var(--ink-500);
  margin-bottom: 18px;
}

.qr-modal__qr {
  width: 208px;
  height: 208px;
  margin: 0 auto 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-soft);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.qr-modal__qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* 二维码图没上传时不留破图：显示占位文案 */
.qr-modal__qr.is-missing::after {
  content: "小程序码待上传";
  font-size: 13px;
  color: var(--ink-300);
}

.qr-modal__qr.is-missing img {
  display: none;
}

.qr-modal__hint {
  font-size: 12.5px;
  color: var(--ink-400);
  margin-bottom: 14px;
}

.qr-modal__weapp {
  margin-bottom: 12px;
}

.qr-modal__weapp wx-open-launch-weapp {
  display: block;
}

.qr-modal__note {
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-300);
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
  text-align: left;
}

.qr-modal__close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--ink-500);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.qr-modal__close:hover {
  background: var(--line);
}

@media (max-width: 560px) {
  .qr-modal__card {
    padding: 24px 18px 18px;
  }

  .qr-modal__qr {
    width: 176px;
    height: 176px;
  }
}