/* ==========================================================================
   星空动漫 - 站点主样式
   主题：深空蓝紫 + 星光金 + 极光青
   ========================================================================== */

:root {
  --space-900: #07041A;
  --space-800: #0B0620;
  --space-700: #150B3C;
  --space-600: #1D104F;
  --space-500: #26156B;
  --violet-500: #6C3BE8;
  --violet-400: #8C5CFF;
  --violet-300: #B79BFF;
  --gold-500: #FFC93C;
  --gold-400: #FFD863;
  --gold-200: #FFE9A8;
  --cyan-400: #4FD8E8;
  --text-100: #F3F0FF;
  --text-200: #DCD5FF;
  --text-300: #A79CD6;
  --line: rgba(140, 92, 255, 0.28);
  --line-soft: rgba(140, 92, 255, 0.16);
  --card: rgba(28, 16, 74, 0.72);
  --card-solid: #180E45;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow: 0 18px 40px rgba(5, 2, 20, 0.55);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-200);
  background: var(--space-800);
  background-image:
    radial-gradient(1100px 620px at 12% -8%, rgba(108, 59, 232, 0.42), transparent 62%),
    radial-gradient(900px 520px at 92% 4%, rgba(79, 216, 232, 0.16), transparent 60%),
    radial-gradient(760px 700px at 68% 92%, rgba(255, 201, 60, 0.10), transparent 64%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.75;
}

.page {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--gold-400);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--gold-200);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(9, 5, 28, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 68px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text-100);
}

.brand:hover {
  color: var(--text-100);
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  box-shadow: 0 6px 18px rgba(108, 59, 232, 0.5);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  white-space: nowrap;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(96deg, var(--gold-400), var(--gold-200) 45%, var(--cyan-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-300);
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--text-200);
}

.nav-links a:hover {
  background: rgba(140, 92, 255, 0.18);
  color: var(--text-100);
}

.nav-links a.is-active {
  background: linear-gradient(120deg, rgba(108, 59, 232, 0.55), rgba(79, 216, 232, 0.22));
  color: #fff;
  border: 1px solid var(--line);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  color: #1B1040 !important;
  background: linear-gradient(120deg, var(--gold-500), var(--gold-200));
  box-shadow: 0 10px 26px rgba(255, 201, 60, 0.32);
}

.nav-cta:hover {
  filter: brightness(1.06);
  color: #1B1040 !important;
}

.nav-links-cta {
  display: none;
}

.nav-links-cta a {
  color: #1B1040 !important;
  font-weight: 700;
  background: linear-gradient(120deg, var(--gold-500), var(--gold-200));
}

.nav-links-cta a:hover {
  background: linear-gradient(120deg, var(--gold-500), var(--gold-200));
  filter: brightness(1.06);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(140, 92, 255, 0.14);
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--text-200);
  border-radius: 2px;
}

/* ------------------------------ 通用按钮 ------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 1px;
  border: none;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.btn-primary {
  color: #1B1040;
  background: linear-gradient(120deg, var(--gold-500), var(--gold-200) 70%);
  box-shadow: 0 14px 34px rgba(255, 201, 60, 0.34);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  color: #1B1040;
}

.btn-ghost {
  color: var(--text-100);
  background: rgba(140, 92, 255, 0.16);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  background: rgba(140, 92, 255, 0.28);
  color: #fff;
}

.btn-sm {
  padding: 10px 24px;
  font-size: 15px;
}

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

.hero {
  position: relative;
  padding: 66px 0 54px;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -140px;
  width: 780px;
  height: 300px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(108, 59, 232, 0.35), transparent);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 44px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.5px;
  color: var(--cyan-400);
  background: rgba(79, 216, 232, 0.10);
  border: 1px solid rgba(79, 216, 232, 0.32);
}

.hero-tag i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 12px var(--cyan-400);
}

h1 {
  margin: 20px 0 18px;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.3;
  letter-spacing: 1px;
  color: #fff;
}

.hero h1 {
  background: linear-gradient(100deg, #FFFFFF 8%, var(--gold-200) 52%, var(--violet-300));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-intro {
  margin: 0 0 26px;
  max-width: 640px;
  font-size: 16.5px;
  color: var(--text-200);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  gap: 26px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  flex-wrap: wrap;
}

.hero-meta div strong {
  display: block;
  font-size: 22px;
  color: var(--gold-400);
  letter-spacing: 0.5px;
}

.hero-meta div span {
  font-size: 13px;
  color: var(--text-300);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-frame {
  position: relative;
  width: 100%;
  max-width: 296px;
  padding: 12px;
  border-radius: 30px;
  background: linear-gradient(160deg, rgba(140, 92, 255, 0.42), rgba(11, 6, 32, 0.9));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.phone-frame img {
  width: 100%;
  max-width: 100%;
  border-radius: 20px;
}

.hero-badge {
  position: absolute;
  right: -14px;
  bottom: 52px;
  padding: 10px 16px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.5;
  color: #1B1040;
  background: linear-gradient(130deg, var(--cyan-400), var(--gold-200));
  box-shadow: 0 12px 26px rgba(6, 3, 22, 0.55);
}

.hero-badge strong {
  display: block;
  font-size: 16px;
}

/* ------------------------------ 数据条 ------------------------------ */

.stat-strip {
  padding: 26px 0 8px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stat-card {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--line-soft);
}

.stat-card b {
  display: block;
  font-size: 26px;
  color: var(--gold-400);
  line-height: 1.2;
}

.stat-card span {
  font-size: 13.5px;
  color: var(--text-300);
}

/* ------------------------------ 区块与标题 ------------------------------ */

section {
  padding: 62px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.eyebrow {
  display: block;
  margin-bottom: 6px;
  font-size: 12.5px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan-400);
}

h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.35;
  color: #fff;
  letter-spacing: 1px;
}

.section-head p {
  margin: 0;
  max-width: 420px;
  font-size: 14.5px;
  color: var(--text-300);
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
  color: #fff;
}

h4 {
  margin: 0 0 8px;
  font-size: 16.5px;
  color: var(--gold-300, #FFE9A8);
}

p {
  margin: 0 0 14px;
}

/* ------------------------------ 功能卡片 ------------------------------ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  position: relative;
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--line);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--violet-400), var(--cyan-400), transparent);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 14px;
  border-radius: 13px;
  font-size: 22px;
  background: rgba(140, 92, 255, 0.18);
  border: 1px solid var(--line);
}

.feature-card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--text-200);
}

.feature-card ul {
  margin: 12px 0 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-300);
}

.feature-card ul li {
  margin-bottom: 4px;
}

/* ------------------------------ 截图展示 ------------------------------ */

.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}

.shot-item {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, rgba(38, 21, 107, 0.7), rgba(14, 8, 38, 0.85));
  border: 1px solid var(--line-soft);
}

.shot-item img {
  width: 100%;
  max-width: 400px;
  margin: 0 auto 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
}

.shot-item h4 {
  margin-bottom: 6px;
}

.shot-item p {
  margin: 0;
  font-size: 14px;
  color: var(--text-300);
}

/* ------------------------------ 模块导航卡 ------------------------------ */

.deep-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  gap: 18px;
}

.deep-card {
  display: block;
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  color: var(--text-200);
  background: linear-gradient(150deg, rgba(108, 59, 232, 0.26), rgba(12, 7, 34, 0.82));
  border: 1px solid var(--line);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.deep-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  color: var(--text-100);
}

.deep-card .deep-index {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--cyan-400);
}

.deep-card p {
  margin: 0 0 16px;
  font-size: 14.5px;
  color: var(--text-300);
}

.deep-card .deep-more {
  font-size: 14px;
  font-weight: 700;
  color: var(--gold-400);
}

/* ------------------------------ 使用路径 ------------------------------ */

.path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.path-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(20, 11, 56, 0.7);
  border: 1px solid var(--line-soft);
}

.path-card h4 {
  display: flex;
  align-items: center;
  gap: 9px;
}

.path-card h4 em {
  font-style: normal;
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 999px;
  color: var(--space-800);
  background: var(--gold-400);
}

.path-card ul {
  margin: 10px 0 0;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--text-300);
}

.path-card ul li {
  margin-bottom: 6px;
}

/* ------------------------------ 评价 ------------------------------ */

.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(272px, 1fr));
  gap: 18px;
}

.review-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line-soft);
}

.review-card .stars {
  color: var(--gold-400);
  letter-spacing: 3px;
  font-size: 14px;
}

.review-card blockquote {
  margin: 12px 0 16px;
  font-size: 15px;
  color: var(--text-200);
}

.review-user {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 13.5px;
  color: var(--text-300);
}

.review-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 15px;
  font-weight: 700;
  color: #1B1040;
  background: linear-gradient(130deg, var(--violet-300), var(--cyan-400));
}

/* ------------------------------ 手风琴 ------------------------------ */

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 22px;
  font-size: 16.5px;
  font-family: var(--font);
  font-weight: 600;
  text-align: left;
  color: var(--text-100);
  background: none;
  border: none;
  cursor: pointer;
}

.faq-question:hover {
  color: var(--gold-400);
}

.faq-question .faq-sign {
  flex: none;
  font-size: 20px;
  color: var(--cyan-400);
  transition: transform 0.22s ease;
}

.faq-item.is-open .faq-sign {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 22px 20px;
  font-size: 15px;
  color: var(--text-200);
  border-top: 1px solid var(--line-soft);
}

.faq-item.is-open .faq-answer {
  display: block;
}

.faq-answer p {
  margin: 14px 0 0;
}

.faq-answer ol,
.faq-answer ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.faq-answer li {
  margin-bottom: 6px;
}

/* ------------------------------ 步骤时间轴 ------------------------------ */

.step-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
}

.step-list::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--violet-400), var(--cyan-400), transparent);
}

.step-item {
  position: relative;
  margin-bottom: 22px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line-soft);
}

.step-item::before {
  content: attr(data-step);
  position: absolute;
  left: -45px;
  top: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  color: #1B1040;
  background: linear-gradient(130deg, var(--gold-400), var(--gold-200));
  box-shadow: 0 0 0 4px rgba(21, 11, 60, 0.9);
}

.step-item p {
  margin: 0 0 8px;
  font-size: 15px;
}

.step-item ul {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--text-300);
}

.step-item code {
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--gold-200);
  background: rgba(255, 201, 60, 0.12);
}

/* ------------------------------ 表格 ------------------------------ */

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  background: rgba(18, 10, 48, 0.72);
}

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

caption {
  padding: 16px 20px 4px;
  text-align: left;
  font-size: 14px;
  color: var(--text-300);
}

th,
td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

th {
  font-size: 14px;
  color: var(--gold-400);
  background: rgba(140, 92, 255, 0.12);
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: none;
}

td {
  color: var(--text-200);
}

/* ------------------------------ 提示块 ------------------------------ */

.note-block {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--gold-500);
  background: rgba(255, 201, 60, 0.09);
  font-size: 15px;
  color: var(--text-200);
}

.note-block strong {
  color: var(--gold-400);
}

/* ------------------------------ 内容排版 ------------------------------ */

.article {
  max-width: 900px;
}

.article h2 {
  margin: 34px 0 16px;
}

.article h3 {
  margin: 26px 0 12px;
}

.article p,
.article li {
  font-size: 15.5px;
  color: var(--text-200);
}

.article ul,
.article ol {
  padding-left: 22px;
}

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

.article a {
  border-bottom: 1px dashed rgba(255, 216, 99, 0.5);
}

.lead {
  font-size: 16.5px;
  color: var(--text-100);
}

/* ------------------------------ 内页头图 ------------------------------ */

.page-hero {
  padding: 54px 0 24px;
  border-bottom: 1px solid var(--line-soft);
}

.page-hero h1 {
  margin: 14px 0 16px;
  font-size: clamp(26px, 3.4vw, 38px);
  color: #fff;
}

.page-hero .lead {
  max-width: 780px;
}

.breadcrumb {
  font-size: 13.5px;
  color: var(--text-300);
}

.breadcrumb a {
  color: var(--text-300);
}

.breadcrumb a:hover {
  color: var(--gold-400);
}

/* ------------------------------ 下载区 ------------------------------ */

.download-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 30px;
  align-items: center;
  padding: 40px;
  border-radius: 26px;
  background:
    radial-gradient(620px 320px at 8% 0%, rgba(108, 59, 232, 0.55), transparent 66%),
    linear-gradient(150deg, rgba(24, 14, 69, 0.95), rgba(10, 6, 28, 0.98));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.download-panel h2 {
  margin-bottom: 14px;
}

.download-panel p {
  font-size: 15px;
  color: var(--text-200);
}

.download-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.spec-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14.5px;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.spec-list li:last-child {
  border-bottom: none;
}

.spec-list span {
  color: var(--text-300);
}

.spec-list strong {
  color: var(--gold-400);
  font-weight: 600;
}

/* ------------------------------ 内链推荐 ------------------------------ */

.link-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.link-cloud a {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--text-100);
  background: rgba(140, 92, 255, 0.14);
  border: 1px solid var(--line-soft);
}

.link-cloud a:hover {
  border-color: var(--gold-500);
  color: var(--gold-400);
}

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

.site-footer {
  margin-top: 40px;
  padding: 52px 0 26px;
  background: rgba(6, 3, 20, 0.86);
  border-top: 1px solid var(--line-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(0, 0.85fr));
  gap: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.footer-brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

.footer-brand b {
  font-size: 19px;
  letter-spacing: 2px;
  color: var(--gold-400);
}

.footer-brand span {
  display: block;
  font-size: 12px;
  color: var(--text-300);
}

.footer-about {
  font-size: 14px;
  color: var(--text-300);
  max-width: 420px;
}

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 15px;
  color: var(--text-100);
}

.footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
}

.footer-col li {
  margin-bottom: 9px;
}

.footer-col a {
  color: var(--text-300);
}

.footer-col a:hover {
  color: var(--gold-400);
}

.footer-bottom {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--text-300);
}

.footer-bottom p {
  margin: 0 0 8px;
}

.disclaimer {
  color: rgba(167, 156, 214, 0.85);
}

/* ------------------------------ 返回顶部 ------------------------------ */

.to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  color: #1B1040;
  font-size: 20px;
  background: linear-gradient(130deg, var(--gold-500), var(--gold-200));
  border: none;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(255, 201, 60, 0.3);
}

.to-top.is-visible {
  display: inline-flex;
}

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

@media (max-width: 980px) {
  .hero-grid,
  .download-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    order: -1;
  }

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

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

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

@media (max-width: 720px) {
  body {
    font-size: 15.5px;
  }

  .nav-bar {
    gap: 10px;
    min-height: 62px;
    flex-wrap: wrap;
  }

  .brand img {
    width: 36px;
    height: 36px;
    border-radius: 9px;
  }

  .brand-name {
    font-size: 17px;
    letter-spacing: 1px;
  }

  .brand-sub {
    display: none;
  }

  .nav-cta {
    padding: 8px 14px;
    font-size: 14px;
    letter-spacing: 0;
    white-space: nowrap;
    flex: none;
    display: none;
  }

  .nav-links-cta {
    display: block;
  }

  .nav-toggle {
    display: block;
    flex: none;
  }

  .nav-links {
    display: none;
    width: 100%;
    order: 3;
    flex-basis: 100%;
    padding-bottom: 14px;
  }

  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links a {
    text-align: center;
  }

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

  .hero-badge {
    right: 6px;
    bottom: 18px;
  }

  .download-panel {
    padding: 26px 20px;
  }

  section {
    padding: 46px 0;
  }

  .step-list {
    padding-left: 26px;
  }

  .step-item::before {
    left: -37px;
  }
}