/* ==========================================================================
   Eas-Term 官网样式
   设计 token 直接取自软件源码 src/renderer/src/styles/base.css，不要改配色。
   纯静态，零外部依赖（无 CDN / 无外链字体）。
   ========================================================================== */

:root {
  /* 液态玻璃 */
  --glass-1: rgba(15, 17, 23, 0.5); /* 最轻的玻璃：导航条 */
  --glass-2: rgba(11, 13, 19, 0.62); /* 面板玻璃：卡片 */
  --glass-3: rgba(25, 28, 38, 0.82); /* 浮层玻璃：浮起的卡片 */
  --glass-border: rgba(255, 255, 255, 0.09);
  --glass-border-strong: rgba(255, 255, 255, 0.14);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.07);
  --blur: blur(28px) saturate(160%);

  /* 文字与强调 */
  --fg: #e2e4ea;
  --fg-dim: #969aa8;
  --accent: #a2b9e0;
  --accent-rgb: 162, 185, 224;
  --accent-soft: rgba(var(--accent-rgb), 0.16);

  /* 背景 */
  --bg-grad-1: rgba(7, 8, 13, 0.72);
  --bg-grad-2: rgba(3, 4, 6, 0.85);
  --bg-solid: #05070b;

  /* 圆角 */
  --radius-xl: 18px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 7px;

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', sans-serif;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;

  /* 版心 */
  /* 内容宽度随屏幕放宽（分档见文件末尾的 min-width 查询）。
     放宽是安全的：正文段落自己有 max-width: 66ch / 60ch 兜底，不会拉成难读的长行；
     真正受益的是截图、能力清单栅格和图文交替那几块。 */
  --wrap: 1080px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* 顶部固定导航的锚点补偿 */
  scroll-padding-top: 78px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100%;
  background-color: var(--bg-solid);
  background-image: linear-gradient(165deg, var(--bg-grad-1), var(--bg-grad-2));
  background-attachment: fixed;
  color: var(--fg);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  /* 硬约束：页面永不横向滚动 */
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s, opacity 0.15s;
}

a:hover {
  opacity: 0.78;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--fg);
  white-space: nowrap;
}

strong {
  color: var(--fg);
  font-weight: 600;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 8px 14px;
  background: var(--glass-3);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-md);
}

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

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

/* ==========================================================================
   导航条
   ========================================================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-1);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
}

.nav-inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--fg);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.2px;
  flex: none;
}

.nav-brand img {
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.nav-links a {
  color: var(--fg-dim);
  font-size: 13.5px;
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.15s, background-color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.05);
  opacity: 1;
}

.nav-links .nav-cta {
  color: var(--accent);
  border-color: rgba(var(--accent-rgb), 0.32);
  background: var(--accent-soft);
}

.nav-links .nav-cta:hover {
  color: #0d0f16;
  background: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   通用区块
   ========================================================================== */

.section {
  padding: 76px 0;
}

.eyebrow {
  color: var(--accent);
  font-size: 12.5px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 30px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.2px;
  margin-bottom: 14px;
}

.lede {
  color: var(--fg-dim);
  font-size: 16px;
  max-width: 66ch;
  margin-bottom: 28px;
}

.minor {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 10px;
}

.note {
  color: var(--fg-dim);
  font-size: 13px;
  margin-top: 12px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: 84px 0 60px;
  text-align: center;
}

.hero-icon {
  width: 104px;
  height: 104px;
  margin: 0 auto 22px;
  border-radius: 24px;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.6);
}

.hero-title {
  font-size: 46px;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.6px;
  margin-bottom: 12px;
}

.hero-tagline {
  font-size: 21px;
  line-height: 1.5;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero-sub {
  color: var(--fg-dim);
  font-size: 16px;
  max-width: 60ch;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 14px;
}

.hero-req {
  color: var(--fg-dim);
  font-size: 13px;
}

/* ==========================================================================
   按钮
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: color 0.15s, background-color 0.15s, border-color 0.15s, opacity 0.15s;
  cursor: pointer;
}

.btn svg {
  width: 17px;
  height: 17px;
  flex: none;
}

.btn-primary {
  background: var(--accent);
  color: #0d0f16;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #b6c8e8;
  border-color: #b6c8e8;
  opacity: 1;
}

.btn-ghost {
  background: var(--glass-2);
  color: var(--fg);
  border-color: var(--glass-border-strong);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--glass-highlight);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
  opacity: 1;
}

/* ==========================================================================
   截图占位块
   ========================================================================== */

.shot {
  margin-top: 34px;
}

.shot-hero {
  margin-top: 52px;
}

/* 真截图：和占位块一样的外框，换图后视觉不跳 */
.shot img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border-strong);
  box-shadow: var(--glass-highlight), 0 16px 48px rgba(0, 0, 0, 0.5);
}

.shot-box {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-3);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-highlight), 0 16px 48px rgba(0, 0, 0, 0.5);
  /* 极淡的对角纹理，提示这里是占位而不是真内容 */
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.022) 0 12px,
    rgba(255, 255, 255, 0) 12px 24px
  );
}

.shot-text {
  color: var(--fg-dim);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 1px;
}

.shot-cap {
  margin-top: 10px;
  color: var(--fg-dim);
  font-size: 12.5px;
  text-align: center;
}

/* ==========================================================================
   核心场景（图文交替）
   ========================================================================== */

.scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 40px;
  align-items: center;
  padding: 44px 0;
  border-top: 1px solid var(--glass-border);
}

.scene:first-of-type {
  border-top: none;
  padding-top: 28px;
}

.scene-rev .scene-text {
  order: 2;
}

.scene-text h3 {
  font-size: 21px;
  line-height: 1.45;
  font-weight: 600;
  margin-bottom: 12px;
}

.scene-text p {
  color: var(--fg-dim);
  margin-bottom: 16px;
}

.scene .shot {
  margin-top: 0;
  min-width: 0;
}

/* 勾选清单 */
.ticks {
  list-style: none;
}

.ticks li {
  position: relative;
  padding-left: 24px;
  color: var(--fg-dim);
  font-size: 14.5px;
  margin-bottom: 8px;
}

.ticks li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 9px;
  height: 5px;
  border-left: 1.6px solid var(--accent);
  border-bottom: 1.6px solid var(--accent);
  transform: rotate(-45deg);
}

/* ==========================================================================
   能力卡片
   ========================================================================== */

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.card {
  background: var(--glass-2);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-highlight);
  padding: 22px 20px;
  transition: border-color 0.15s, background-color 0.15s;
}

.card:hover {
  background: rgba(25, 28, 38, 0.82);
  border-color: var(--glass-border-strong);
}

.card-icon {
  width: 22px;
  height: 22px;
  color: var(--accent);
  margin-bottom: 12px;
}

.card h3 {
  font-size: 15.5px;
  font-weight: 600;
  margin-bottom: 7px;
}

.card p {
  color: var(--fg-dim);
  font-size: 14px;
  line-height: 1.7;
}

/* ==========================================================================
   AI 接入面板
   ========================================================================== */

.panel {
  background: var(--glass-3);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-highlight), 0 16px 48px rgba(0, 0, 0, 0.5);
  padding: 40px;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  margin-top: 8px;
}

.split-col {
  min-width: 0;
}

/* ==========================================================================
   下载
   ========================================================================== */

.dl-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.dl-card {
  background: var(--glass-2);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-highlight), 0 16px 48px rgba(0, 0, 0, 0.42);
  padding: 28px 26px;
}

.dl-icon {
  width: 26px;
  height: 26px;
  color: var(--accent);
  margin-bottom: 12px;
}

.dl-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 6px;
}

.dl-meta {
  color: var(--fg-dim);
  font-size: 13.5px;
  margin-bottom: 18px;
}

.dl-more {
  margin-top: 22px;
  color: var(--fg-dim);
  font-size: 14px;
}

/* 下载页专用 */
.page-head {
  padding: 60px 0 8px;
}

.table-scroll {
  overflow-x: auto;
  margin-top: 22px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-2);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--glass-highlight);
}

table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-border);
  vertical-align: top;
}

th {
  color: var(--fg);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.4px;
  background: rgba(255, 255, 255, 0.03);
}

td {
  color: var(--fg-dim);
}

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

.steps {
  counter-reset: step;
  list-style: none;
  margin-top: 18px;
}

.steps li {
  position: relative;
  counter-increment: step;
  padding-left: 34px;
  color: var(--fg-dim);
  margin-bottom: 12px;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(var(--accent-rgb), 0.32);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1;
}

.faq {
  margin-top: 26px;
}

.faq h3 {
  font-size: 15.5px;
  font-weight: 600;
  margin: 22px 0 6px;
}

.faq p {
  color: var(--fg-dim);
  font-size: 14.5px;
}

/* ==========================================================================
   页脚
   ========================================================================== */

.footer {
  border-top: 1px solid var(--glass-border);
  background: var(--glass-1);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  padding: 30px 0;
  margin-top: 20px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  font-size: 14px;
  font-weight: 600;
}

.footer-brand img {
  border-radius: 5px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: var(--fg-dim);
  font-size: 13.5px;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--fg);
  opacity: 1;
}

.footer-copy {
  color: var(--fg-dim);
  font-size: 13px;
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scene {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .scene-rev .scene-text {
    order: 0;
  }

  .panel {
    padding: 30px 24px;
  }

  .split {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 14.5px;
  }

  .wrap,
  .nav-inner {
    padding: 0 18px;
  }

  .nav-links a {
    padding: 6px 8px;
    font-size: 13px;
  }

  .nav-links {
    gap: 2px;
  }

  .section {
    padding: 54px 0;
  }

  .hero {
    padding: 52px 0 40px;
  }

  .hero-icon {
    width: 84px;
    height: 84px;
    border-radius: 20px;
  }

  .hero-title {
    font-size: 34px;
  }

  .hero-tagline {
    font-size: 18px;
  }

  .hero-sub {
    font-size: 15px;
  }

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

  .section-title {
    font-size: 24px;
  }

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

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

  .panel {
    padding: 24px 18px;
    border-radius: var(--radius-lg);
  }

  .shot-hero {
    margin-top: 34px;
  }

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

@media (max-width: 400px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }
}

/* 尊重系统的减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}

/* ==========================================================================
   大屏放宽 —— 1080px 在 2K/4K 上两侧留白过多，显得逼仄
   正文有 66ch/60ch 兜底，放宽不会把行拉长到难读；受益的是截图、栅格和图文交替
   ========================================================================== */

@media (min-width: 1400px) {
  :root { --wrap: 1240px; }
}

@media (min-width: 1700px) {
  :root { --wrap: 1440px; }
  /* 卡片列数跟着加，否则单张卡被拉得过宽、里面的短文案会很空 */
  .cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 2100px) {
  :root { --wrap: 1680px; }
}

@media (min-width: 2500px) {
  :root { --wrap: 1880px; }
}

/* 主视觉在大屏上突破容器——Hero 图是这页最该被看清的东西 */
@media (min-width: 1700px) {
  .shot-hero { margin-left: -60px; margin-right: -60px; }
}
@media (min-width: 2100px) {
  .shot-hero { margin-left: -110px; margin-right: -110px; }
}