/* 澄澜量化落地页: 与应用同一品牌色(#5b8cff -> #2fd4c3), 浅色 / 深色跟随系统, 可手动切换。
   不加载任何外部字体与资源(国内访问稳定、首屏快)。 */

:root {
  --bg: #ffffff;
  --bg-2: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f1f4f9;
  --line: #e3e8ef;
  --line-2: #d3dbe6;
  --fg: #0c1320;
  --fg-2: #39465a;
  --fg-3: #657186;
  --brand: #2f6bff;
  --brand-2: #0fb5a3;
  --brand-ink: #1f55d6;
  --grad: linear-gradient(135deg, #5b8cff 0%, #2fd4c3 100%);
  --warn: #b76a00;
  --warn-bg: #fff4e0;
  --rise: #e5383b;
  --fall: #0f9f61;
  --rise-bg: #fdecec;
  --fall-bg: #e5f6ee;
  --neutral-bg: #eef1f6;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 12px 32px -12px rgba(16, 24, 40, 0.14);
  --glow: radial-gradient(60% 50% at 50% 0%, rgba(91, 140, 255, 0.16), transparent 70%), radial-gradient(40% 40% at 85% 10%, rgba(47, 212, 195, 0.12), transparent 70%);
  --r: 14px;
  --r-s: 10px;
  --maxw: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #07090d;
    --bg-2: #0a0e14;
    --surface: #0e131b;
    --surface-2: #131a24;
    --line: #1c2430;
    --line-2: #2a3442;
    --fg: #e9eef6;
    --fg-2: #b2bccb;
    --fg-3: #7b8799;
    --brand: #6f9bff;
    --brand-2: #2fd4c3;
    --brand-ink: #93b4ff;
    --warn: #f0a63a;
    --warn-bg: rgba(240, 166, 58, 0.14);
    --rise: #ff5a63;
    --fall: #22c27a;
    --rise-bg: rgba(255, 90, 99, 0.14);
    --fall-bg: rgba(34, 194, 122, 0.14);
    --neutral-bg: rgba(148, 163, 184, 0.14);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 20px 48px -20px rgba(0, 0, 0, 0.7);
    --glow: radial-gradient(60% 50% at 50% 0%, rgba(91, 140, 255, 0.2), transparent 70%), radial-gradient(40% 40% at 85% 10%, rgba(47, 212, 195, 0.14), transparent 70%);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #07090d;
  --bg-2: #0a0e14;
  --surface: #0e131b;
  --surface-2: #131a24;
  --line: #1c2430;
  --line-2: #2a3442;
  --fg: #e9eef6;
  --fg-2: #b2bccb;
  --fg-3: #7b8799;
  --brand: #6f9bff;
  --brand-2: #2fd4c3;
  --brand-ink: #93b4ff;
  --warn: #f0a63a;
  --warn-bg: rgba(240, 166, 58, 0.14);
  --rise: #ff5a63;
  --fall: #22c27a;
  --rise-bg: rgba(255, 90, 99, 0.14);
  --fall-bg: rgba(34, 194, 122, 0.14);
  --neutral-bg: rgba(148, 163, 184, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 20px 48px -20px rgba(0, 0, 0, 0.7);
  --glow: radial-gradient(60% 50% at 50% 0%, rgba(91, 140, 255, 0.2), transparent 70%), radial-gradient(40% 40% at 85% 10%, rgba(47, 212, 195, 0.14), transparent 70%);
  color-scheme: dark;
}

/* 英文页: 绿涨红跌(国际习惯); 中文页红涨绿跌 */
html[lang="en"] {
  --rise: #0f9f61;
  --fall: #e5383b;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg-2);
  font: 16px/1.75 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--brand-ink);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}
h1,
h2,
h3 {
  color: var(--fg);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}
h1 {
  font-size: clamp(28px, 4.6vw, 48px);
  font-weight: 750;
  letter-spacing: -0.02em;
}
h2 {
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 700;
}
h3 {
  font-size: 18px;
  font-weight: 650;
}
p {
  margin: 0 0 1em;
}
code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 0.05em 0.35em;
  border-radius: 6px;
  word-break: break-word;
}
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 6px;
}
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 100;
  background: var(--surface);
  padding: 8px 14px;
  border-radius: 8px;
}
.skip:focus {
  left: 16px;
}
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 16px;
}
@media (min-width: 768px) {
  .wrap {
    padding: 0 28px;
  }
}
.narrow {
  max-width: 860px;
}
.muted {
  color: var(--fg-3);
}
.num {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.rise {
  color: var(--rise);
}
.fall {
  color: var(--fall);
}

/* ---------- 页眉 ---------- */
.hd {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
}
.hd-in {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  flex-shrink: 0;
}
.brand:hover {
  text-decoration: none;
}
.brand-name {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 1px;
}
.brand-name b {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand-name small {
  margin-left: 8px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.nav {
  display: none;
  gap: 4px;
}
.nav a {
  color: var(--fg-2);
  padding: 6px 12px;
  border-radius: 9px;
  font-size: 15px;
}
.nav a:hover,
.nav a[aria-current="page"] {
  background: var(--surface-2);
  color: var(--fg);
  text-decoration: none;
}
.hd-act {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}
.lang {
  display: none;
  color: var(--fg-2);
  font-size: 14px;
  padding: 6px 10px;
}
.theme {
  border: 0;
  background: none;
  color: var(--fg-2);
  width: 36px;
  height: 36px;
  border-radius: 9px;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.theme:hover {
  background: var(--surface-2);
  color: var(--fg);
}
.nav-m summary {
  list-style: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--fg);
  border-radius: 9px;
}
.nav-m summary::-webkit-details-marker {
  display: none;
}
.nav-m[open] summary {
  background: var(--surface-2);
}
.nav-m nav {
  position: absolute;
  left: 0;
  right: 0;
  top: 64px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 8px 16px 16px;
  display: grid;
  box-shadow: var(--shadow);
}
.nav-m nav a {
  padding: 12px 4px;
  color: var(--fg);
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}
.nav-m nav a:last-child {
  border-bottom: 0;
}
@media (min-width: 960px) {
  .nav {
    display: flex;
  }
  .lang {
    display: inline-block;
  }
  .nav-m {
    display: none;
  }
}
@media (max-width: 420px) {
  .brand-name small {
    display: none;
  }
  .hd-act .btn-sm {
    padding: 7px 12px;
  }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  border: 1px solid var(--line-2);
  color: var(--fg);
  background: var(--surface);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s;
  text-align: center;
}
.btn:hover {
  text-decoration: none;
  background: var(--surface-2);
}
.btn-pri {
  border: 0;
  color: #fff;
  background: var(--grad);
  box-shadow: 0 6px 20px -8px rgba(47, 107, 255, 0.6);
}
.btn-pri:hover {
  background: var(--grad);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -8px rgba(47, 107, 255, 0.7);
}
.btn-sm {
  padding: 8px 14px;
  font-size: 14px;
  border-radius: 10px;
}
.btn-lg {
  padding: 13px 22px;
  font-size: 16px;
  border-radius: 12px;
}
.btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 0;
}

/* ---------- 首屏 ---------- */
.hero {
  background: var(--glow);
  padding: 56px 0 24px;
  text-align: center;
}
.hero .btns {
  justify-content: center;
}
.eyebrow {
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.04em;
  color: var(--brand-ink);
  margin: 0 0 12px;
}
.hero h1 {
  max-width: 900px;
  margin: 0 auto 18px;
}
.h1-brand {
  display: block;
  font-size: 0.5em;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  max-width: 760px;
  margin: 0 auto;
  font-size: clamp(16px, 1.6vw, 18px);
  color: var(--fg-2);
}
.hero-sub b {
  color: var(--fg);
}
.hero-facts {
  list-style: none;
  padding: 0;
  margin: 22px auto 36px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  font-size: 14px;
  color: var(--fg-3);
}
.hero-facts li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad);
  margin-right: 8px;
  vertical-align: middle;
}
@media (min-width: 768px) {
  .hero {
    padding: 84px 0 32px;
  }
}

/* ---------- 截图外框 ---------- */
.frame {
  margin: 0;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  overflow: hidden;
  background: #07090d;
  box-shadow: var(--shadow);
  text-align: left;
}
.frame-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  background: #0e131b;
  border-bottom: 1px solid #1c2430;
}
.frame-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2a3442;
}
.frame-bar span {
  margin-left: 10px;
  font-size: 12px;
  color: #7b8799;
  font-family: var(--mono);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.frame figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: #b2bccb;
  background: #0e131b;
  border-top: 1px solid #1c2430;
}
.shot {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
}

/* ---------- 区块 ---------- */
.sec {
  padding: 48px 0;
}
.sec + .sec {
  border-top: 1px solid var(--line);
}
@media (min-width: 768px) {
  .sec {
    padding: 72px 0;
  }
}
.sec-hd {
  max-width: 760px;
  margin-bottom: 32px;
}
.lead {
  font-size: 17px;
  color: var(--fg-2);
}
.note {
  font-size: 13.5px;
  color: var(--fg-3);
}
.more {
  margin: 28px 0 0;
}

.grid {
  display: grid;
  gap: 16px;
}
@media (min-width: 640px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1000px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 22px;
  display: flex;
  flex-direction: column;
}
.card p {
  font-size: 15px;
}
.card .q {
  color: var(--fg);
  font-weight: 600;
  margin-bottom: 0.5em;
}
.card > a:last-child {
  margin-top: auto;
  font-size: 14.5px;
  font-weight: 600;
}
.mini {
  margin-top: 40px;
}

/* 功能行: 文字 + 截图 */
.feat {
  display: grid;
  gap: 24px;
  align-items: center;
  padding: 28px 0;
}
.feat + .feat {
  border-top: 1px dashed var(--line);
}
.feat-txt h3 {
  font-size: clamp(20px, 2.2vw, 26px);
}
.feat-txt > a {
  font-weight: 600;
}
@media (min-width: 1000px) {
  .feat {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    padding: 40px 0;
  }
  .feat.flip .feat-txt {
    order: 2;
  }
}
.ticks {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2em;
}
.ticks li {
  position: relative;
  padding-left: 26px;
  margin: 8px 0;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--brand-2);
  border-bottom: 2px solid var(--brand-2);
  transform: rotate(-45deg);
}
.steps {
  padding-left: 1.4em;
}
.steps li {
  margin: 8px 0;
}

/* 手机截图 */
.phones {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.shot-m {
  width: min(300px, 44vw);
  border-radius: 28px;
  border: 6px solid #1c2430;
  background: #07090d;
  box-shadow: var(--shadow);
}

/* ---------- 表格 ---------- */
.tbl-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  margin: 0 0 1.2em;
  background: var(--surface);
  -webkit-overflow-scrolling: touch;
}
.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.6;
}
.tbl th,
.tbl td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.tbl thead th {
  background: var(--surface-2);
  color: var(--fg-3);
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
}
.tbl tbody th {
  color: var(--fg);
  font-weight: 600;
  white-space: nowrap;
}
.tbl tr:last-child th,
.tbl tr:last-child td {
  border-bottom: 0;
}
.tbl.kv th {
  width: 9em;
}
.tbl td.num {
  text-align: right;
}
/* 文字多的表格: 手机上每行堆叠成一张卡片, 列名作小标签(data-label 由构建时自动补) */
@media (max-width: 640px) {
  .tbl.stack thead {
    display: none;
  }
  .tbl.stack tr {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
  }
  .tbl.stack tr:last-child {
    border-bottom: 0;
  }
  .tbl.stack th,
  .tbl.stack td {
    display: block;
    border: 0;
    padding: 3px 14px;
    white-space: normal;
  }
  .tbl.stack td[data-label]::before {
    content: attr(data-label);
    display: block;
    color: var(--fg-3);
    font-size: 12px;
  }
}
.btn-sm {
  white-space: nowrap;
}
.breadth {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 15px;
}

/* 状态标签 */
.bdg {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
  line-height: 1.8;
}
.bdg-up {
  color: var(--rise);
  background: var(--rise-bg);
}
.bdg-down {
  color: var(--fall);
  background: var(--fall-bg);
}
.bdg-warn {
  color: var(--warn);
  background: var(--warn-bg);
}
.bdg-neutral {
  color: var(--fg-3);
  background: var(--neutral-bg);
}

/* ---------- 代码 ---------- */
.code {
  margin: 0;
  background: #0b1018;
  color: #d6e2f5;
  border: 1px solid #1c2430;
  border-radius: var(--r-s);
  padding: 18px 20px;
  overflow-x: auto;
  font: 13.5px/1.65 var(--mono);
  max-width: 100%;
}
.code code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  word-break: normal;
}
.split {
  display: grid;
  gap: 24px;
}
@media (min-width: 1000px) {
  .split {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
    align-items: start;
  }
}

/* ---------- 内页 ---------- */
.page-hd {
  background: var(--glow);
  padding: 28px 0 40px;
}
.page-hd .frame {
  margin-top: 32px;
}
.answer {
  font-size: 17px;
  color: var(--fg-2);
  max-width: 820px;
}
.crumbs ol {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 13.5px;
  color: var(--fg-3);
}
.crumbs li + li::before {
  content: "/";
  margin-right: 6px;
  opacity: 0.6;
}
.crumbs a {
  color: var(--fg-3);
}
.meta {
  font-size: 13.5px;
  color: var(--fg-3);
}
.def {
  border: 1px solid var(--line-2);
  border-left: 4px solid var(--brand);
  background: var(--surface);
  border-radius: var(--r-s);
  padding: 14px 18px;
  margin-top: 20px;
}
.def b {
  font-size: 13px;
  color: var(--brand-ink);
}
.def p {
  margin: 4px 0 0;
  color: var(--fg);
  font-size: 16.5px;
}
.prose {
  padding-top: 36px;
  padding-bottom: 12px;
}
.prose h2 {
  font-size: 23px;
  margin-top: 1.6em;
}
.prose h2:first-child {
  margin-top: 0;
}
.formula {
  font-family: var(--mono);
  font-size: 14.5px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  padding: 14px 18px;
  margin: 0 0 1.2em;
  color: var(--fg);
  overflow-x: auto;
  line-height: 1.9;
}
.dl dt {
  color: var(--fg);
  font-weight: 650;
  margin-top: 12px;
}
.dl dd {
  margin: 2px 0 0;
}
.layer-grid {
  display: grid;
  gap: 16px;
}
@media (min-width: 720px) {
  .layer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.layer-g {
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  padding: 16px 18px;
  background: var(--surface);
}
.layer-g h3 {
  font-size: 16px;
}
.layer-g h3 small {
  color: var(--fg-3);
  font-weight: 500;
}
.layer-g dl {
  margin: 0;
}
.layer-g dt {
  font-weight: 600;
  color: var(--fg);
  font-size: 14.5px;
  margin-top: 8px;
}
.layer-g dd {
  margin: 0;
  font-size: 14px;
}
.layer-g p {
  font-size: 14px;
  margin: 0;
}

/* FAQ */
.faq .qa {
  border-top: 1px solid var(--line);
  padding: 18px 0 4px;
}
.faq .qa:first-of-type {
  border-top: 0;
}
.faq h3 {
  font-size: 17px;
}
.faq p {
  color: var(--fg-2);
}

/* 相关链接 */
.links {
  padding-left: 1.2em;
}
.links li {
  margin: 6px 0;
}
.chips {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
}
.chips a {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 14px;
  background: var(--surface);
}

/* 个股页 */
.sym-hd h1 {
  font-size: clamp(26px, 3.6vw, 38px);
}
.facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  overflow: hidden;
  margin: 20px 0;
}
@media (min-width: 640px) {
  .facts {
    grid-template-columns: repeat(4, 1fr);
  }
}
/* 每格只画右边和下边的线, 再向外挪 1px 让最外圈被容器边框盖住, 空位不会露出灰块 */
.facts > div {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 0 -1px -1px 0;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.facts span {
  font-size: 12.5px;
  color: var(--fg-3);
}
.facts b {
  color: var(--fg);
  font-weight: 650;
  font-size: 15px;
}
.scn {
  border: 1px solid var(--line-2);
  border-left: 4px solid var(--brand-2);
  border-radius: var(--r-s);
  padding: 12px 16px;
  margin: 0 0 14px;
  background: var(--surface);
}
.scn b {
  color: var(--fg);
}
.scn p {
  margin: 4px 0 0;
  font-size: 15px;
}
.events {
  list-style: none;
  padding: 0;
  margin: 0;
}
.events li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.events time {
  font-variant-numeric: tabular-nums;
  color: var(--fg-3);
  min-width: 6.5em;
}
.perf {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
  margin: 0 0 18px;
}
.perf li {
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  padding: 10px 12px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
}
.perf span {
  font-size: 12.5px;
  color: var(--fg-3);
}
.perf b {
  font-variant-numeric: tabular-nums;
  font-size: 16px;
}

/* 底部号召 */
.cta-band {
  text-align: center;
  background: var(--glow), var(--bg-2);
}
.cta-band h2 {
  max-width: 760px;
  margin: 0 auto 12px;
}
.cta-band .btns {
  justify-content: center;
}

/* ---------- 页脚 ---------- */
.ft {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding: 48px 0 28px;
  font-size: 14px;
}
.ft-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(2, 1fr);
}
.ft-about {
  grid-column: 1 / -1;
}
.ft-about p {
  margin-top: 12px;
  color: var(--fg-3);
  max-width: 420px;
}
@media (min-width: 900px) {
  .ft-grid {
    grid-template-columns: 2fr repeat(4, 1fr);
  }
  .ft-about {
    grid-column: auto;
  }
}
.ft h2 {
  font-size: 14px;
  color: var(--fg);
  margin-bottom: 10px;
}
.ft ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.ft li {
  margin: 6px 0;
}
.ft a {
  color: var(--fg-2);
}
.ft-top {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
}
.ft-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.ft-note {
  margin-top: 32px;
  color: var(--fg-3);
  font-size: 13px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.ft-copy {
  color: var(--fg-3);
  font-size: 13px;
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn {
    transition: none;
  }
}
@media print {
  .hd,
  .ft,
  .cta-band,
  .btns {
    display: none;
  }
}