/* EarVlog 落地页 —— 对齐 learnvloglish.com 的深色暖橙风格 */
.landing-body {
  background:
    radial-gradient(900px 500px at 78% -12%, rgba(255, 106, 0, 0.20), transparent 62%),
    radial-gradient(700px 400px at 6% 4%, rgba(255, 138, 36, 0.10), transparent 58%),
    linear-gradient(180deg, #08080a 0%, #060606 60%, #050505 100%);
  min-height: 100vh;
  color: var(--text);
}
html[data-theme="light"] .landing-body {
  background:
    radial-gradient(900px 500px at 78% -12%, rgba(255, 114, 0, 0.14), transparent 62%),
    linear-gradient(180deg, #fffdf9 0%, #faf8f3 60%, #f3f0ea 100%);
}

/* ---- 导航 ---- */
.landing-nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 26px;
  max-width: 1240px; margin: 0 auto; padding: 16px 28px;
  backdrop-filter: blur(14px);
  background: rgba(6, 6, 6, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
html[data-theme="light"] .landing-nav { background: rgba(255, 253, 249, 0.82); border-bottom-color: rgba(42, 37, 32, 0.08); }
.landing-brand { display: inline-flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
.landing-nav-links { display: flex; gap: 22px; margin-left: 12px; }
.landing-nav-link { color: var(--muted); font-size: 14px; font-weight: 600; text-decoration: none; }
.landing-nav-link:hover { color: var(--orange); }
.landing-nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.landing-ghost, .landing-primary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 38px; padding: 0 16px; border-radius: 999px;
  font-size: 14px; font-weight: 700; text-decoration: none; transition: .18s;
}
.landing-ghost { border: 1px solid var(--border-strong); background: transparent; color: var(--text); }
.landing-ghost:hover { border-color: var(--orange); color: var(--orange); }
.landing-primary { border: 0; background: linear-gradient(180deg, #ff8a24, #ff6a00); color: #fff; box-shadow: 0 8px 22px rgba(255, 106, 0, .3); }
.landing-primary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.landing-ghost.lg, .landing-primary.lg { height: 46px; padding: 0 26px; font-size: 15px; }
.landing-ghost.sm { height: 30px; padding: 0 12px; font-size: 12px; }

/* ---- Hero ---- */
.landing-hero {
  max-width: 1240px; margin: 0 auto; padding: 90px 28px 40px; text-align: center;
}
.landing-eyebrow {
  display: inline-block; margin-bottom: 22px; padding: 6px 14px; border-radius: 999px;
  border: 1px solid rgba(255, 106, 0, .35); background: rgba(255, 106, 0, .10);
  color: #ffb067; font-size: 13px; font-weight: 700; letter-spacing: .02em;
}
html[data-theme="light"] .landing-eyebrow { color: #c25200; }
.landing-hero h1 {
  margin: 0 0 22px; font-size: clamp(38px, 6vw, 76px); line-height: 1.08;
  letter-spacing: -0.05em; font-weight: 900;
}
.landing-hero h1 em { font-style: normal; color: var(--orange); }
.landing-hero > p { max-width: 620px; margin: 0 auto 34px; color: var(--muted); font-size: 17px; line-height: 1.8; }
.landing-hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.landing-proof {
  display: flex; justify-content: center; gap: 56px; flex-wrap: wrap;
  margin: 64px 0 0; padding: 26px 0 0; list-style: none;
  border-top: 1px solid var(--border);
}
.landing-proof li { display: flex; flex-direction: column; gap: 4px; }
.landing-proof strong { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.landing-proof span { color: var(--muted); font-size: 13px; }

/* ---- 通用 section ---- */
.landing-section { max-width: 1240px; margin: 0 auto; padding: 76px 28px 0; }
.landing-section-head { margin-bottom: 28px; }
.landing-section-head h2 { margin: 0 0 8px; font-size: clamp(24px, 3vw, 34px); letter-spacing: -0.03em; font-weight: 800; }
.landing-section-head p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---- 试看卡片 ---- */
/* 只展示 3 个试看：固定三列，大屏单卡更宽、不拥挤 */
.landing-trial-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.landing-trial-card {
  position: relative; overflow: hidden; border-radius: 18px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel); transition: .22s; text-align: left;
  display: flex; flex-direction: column;
}
.landing-trial-card:hover { transform: translateY(-3px); border-color: rgba(255, 106, 0, .5); box-shadow: 0 18px 42px rgba(0, 0, 0, .35); }
.landing-trial-thumb { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #111; }
.landing-trial-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .3s; }
.landing-trial-card:hover .landing-trial-thumb img { transform: scale(1.04); }
.landing-trial-play {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,.55));
}
.landing-trial-play span {
  display: grid; place-items: center; width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255, 106, 0, .92); color: #fff; font-size: 18px; box-shadow: 0 10px 26px rgba(255,106,0,.45);
}
.landing-trial-badge {
  position: absolute; top: 12px; left: 12px; padding: 4px 10px; border-radius: 999px;
  background: rgba(255, 106, 0, .92); color: #fff; font-size: 12px; font-weight: 700;
}
.landing-trial-body { padding: 16px 18px 18px; }
.landing-trial-body h3 { margin: 0 0 6px; font-size: 16px; font-weight: 700; line-height: 1.4; }
.landing-trial-body p { margin: 0; color: var(--muted); font-size: 13px; }
.landing-trial-meta { display: flex; gap: 10px; margin-top: 12px; color: var(--muted); font-size: 12px; }
.landing-skeleton { aspect-ratio: 16/10; border-radius: 18px; background: linear-gradient(90deg, var(--panel) 25%, var(--panel-2) 50%, var(--panel) 75%); background-size: 200% 100%; animation: ls 1.4s infinite; }
@keyframes ls { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ============================================================
   试看之后的内容区块 —— 「杂志式分区」视觉语言
   统一节奏：大标题 + 细描述 + 编号 / 图标 + 高亮卡片
   ============================================================ */

/* ---- Section 头部升级：标题左侧品牌竖条 ---- */
.landing-section-head { position: relative; padding-left: 18px; }
.landing-section-head::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 4px; width: 3px;
  border-radius: 3px; background: var(--grad-brand);
}
.landing-section-head h2 { font-size: clamp(26px, 3.2vw, 38px); line-height: 1.2; }
.landing-section-head p { max-width: 560px; }

/* ---- 内容主题：六宫格卡片 ---- */
.landing-topics {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px;
}
.lp-topic {
  position: relative; overflow: hidden;
  padding: 26px 24px 22px; border-radius: 20px;
  border: 1px solid var(--border); background: var(--panel);
  box-shadow: var(--shadow);
  transition: .22s;
  /* 描述行数不一致时，底部「N 个片段」也要对齐 */
  display: flex; flex-direction: column;
}
.lp-topic p { flex: 1; }
/* 右上角的柔光 */
.lp-topic::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 160px; height: 160px;
  border-radius: 50%; background: radial-gradient(circle, rgba(255,106,0,.14), transparent 70%);
  opacity: 0; transition: .3s;
}
.lp-topic:hover { transform: translateY(-3px); border-color: rgba(255,106,0,.35); box-shadow: var(--shadow-lg); }
.lp-topic:hover::after { opacity: 1; }
.lp-topic-icon {
  width: 46px; height: 46px; border-radius: 14px;
  display: grid; place-items: center; font-size: 22px; line-height: 1;
  background: rgba(255,106,0,.10); border: 1px solid rgba(255,106,0,.18);
  margin-bottom: 16px;
}
.lp-topic h3 { margin: 0 0 6px; font-size: 18px; font-weight: 800; letter-spacing: -0.02em; }
.lp-topic p { margin: 0 0 18px; color: var(--muted); font-size: 13.5px; line-height: 1.75; }
.lp-topic-meta {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 600; color: var(--faint);
}
.lp-topic-meta::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--orange); box-shadow: 0 0 0 3px rgba(255,106,0,.15);
}

/* ---- 学习工具：左编号、右图标，横向大卡 ---- */
.landing-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.lp-tool {
  display: grid; grid-template-columns: 54px minmax(0, 1fr); grid-template-rows: auto auto auto;
  column-gap: 18px; align-items: start;
  padding: 24px 26px 22px; border-radius: 20px;
  border: 1px solid var(--border); background: var(--panel);
  box-shadow: var(--shadow); transition: .22s;
}
.lp-tool:hover { transform: translateY(-3px); border-color: rgba(255,106,0,.35); box-shadow: var(--shadow-lg); }
.lp-tool-icon {
  grid-row: 1 / span 3; width: 54px; height: 54px; border-radius: 16px;
  display: grid; place-items: center;
  background: var(--grad-brand); box-shadow: 0 10px 22px rgba(255,106,0,.28);
}
.lp-tool-icon svg { width: 26px; height: 26px; stroke: #fff; }
.lp-tool h3 { grid-column: 2; margin: 2px 0 6px; font-size: 17px; font-weight: 800; letter-spacing: -0.02em; }
.lp-tool p { grid-column: 2; margin: 0 0 14px; color: var(--muted); font-size: 13.5px; line-height: 1.75; }
.lp-tool-tag {
  grid-column: 2; justify-self: start;
  padding: 3px 10px; border-radius: 999px;
  background: rgba(255,106,0,.10); color: var(--orange);
  font-size: 12px; font-weight: 700; letter-spacing: .02em;
}

/* ---- 三步开始：时间线式编号卡 ---- */
.landing-how {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px;
  margin: 0; padding: 0; list-style: none; counter-reset: step;
}
.landing-how li {
  position: relative; padding: 28px 26px 24px; border-radius: 20px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,106,0,.06), var(--panel) 68%);
  transition: .22s;
}
.landing-how li:hover { border-color: rgba(255,106,0,.35); transform: translateY(-2px); }
/* 步骤之间的连线（仅桌面） */
.landing-how li:not(:last-child)::after {
  content: ""; position: absolute; right: -18px; top: 48px; width: 18px; height: 1px;
  background: var(--border-strong);
}
.lp-step-num {
  display: block; margin-bottom: 14px;
  font-size: 34px; line-height: 1; font-weight: 900; letter-spacing: -0.04em;
  color: transparent; -webkit-text-stroke: 1.5px rgba(255,106,0,.55);
}
.landing-how h3 { margin: 0 0 8px; font-size: 17px; font-weight: 800; letter-spacing: -0.02em; }
.landing-how p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.75; }

/* ---- FAQ ---- */
.landing-faq {
  display: grid; gap: 12px; max-width: 900px;
}
.landing-faq details {
  border: 1px solid var(--border); border-radius: 16px; background: var(--panel);
  padding: 4px 22px; transition: .2s; box-shadow: var(--shadow);
}
.landing-faq details:hover { border-color: var(--border-strong); }
.landing-faq details[open] { border-color: rgba(255,106,0,.35); }
.landing-faq summary {
  cursor: pointer; padding: 16px 0; font-weight: 700; font-size: 15.5px; list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.landing-faq summary::-webkit-details-marker { display: none; }
/* 加号用圆形按钮样式，替代原来飘在右侧的纯文字「+」 */
.landing-faq summary::after {
  content: "+"; flex: 0 0 auto;
  width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255,106,0,.10); color: var(--orange);
  font-size: 18px; font-weight: 700; line-height: 1;
  transition: .2s;
}
.landing-faq details[open] summary::after {
  content: "−"; background: var(--orange); color: #fff; transform: rotate(180deg);
}
.landing-faq p {
  margin: 0 0 18px; padding-right: 44px;
  color: var(--muted); font-size: 14px; line-height: 1.85;
}

/* ---- 添加微信：整幅 CTA ---- */
.landing-cta {
  max-width: 1240px; margin: 90px auto 0; padding: 0 28px;
}
.landing-cta-inner {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); gap: 56px;
  align-items: center; padding: 56px; border-radius: 28px;
  border: 1px solid rgba(255,106,0,.28);
  background:
    radial-gradient(700px 320px at 12% -10%, rgba(255,106,0,.18), transparent 60%),
    radial-gradient(500px 260px at 95% 110%, rgba(255,106,0,.10), transparent 60%),
    var(--panel);
  box-shadow: var(--shadow-lg);
  position: relative; overflow: hidden;
}
.landing-cta-copy .landing-eyebrow { margin-bottom: 18px; }
.landing-cta-copy h2 {
  margin: 0 0 14px; font-size: clamp(26px, 3.2vw, 38px); letter-spacing: -0.03em;
  font-weight: 900; line-height: 1.2;
}
.landing-cta-copy > p { margin: 0 0 28px; color: var(--muted); font-size: 15.5px; line-height: 1.8; max-width: 460px; }
.landing-cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.landing-cta-card {
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  padding: 26px; border-radius: 22px;
  border: 1px solid var(--border); background: var(--panel-2);
}
.landing-qr {
  width: 196px; height: 196px; border-radius: 18px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  background: #fff; color: #b9b4ad; font-size: 12px;
  border: 1px solid rgba(42,37,32,.08); box-shadow: inset 0 0 0 8px #fff;
}
/* 没有真实二维码时，展示一个品牌色的示意图标，比“灰色空框”更完整 */
.landing-qr svg { width: 84px; height: 84px; color: #09bb07; }
.landing-qr span { color: #9a958e; }
.landing-wechat-id { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.landing-wechat-id strong { font-family: ui-monospace, Menlo, monospace; color: var(--orange); font-size: 17px; letter-spacing: -0.01em; }
.landing-wechat-tip { margin: 0; color: var(--faint); font-size: 12.5px; }

/* ---- footer ---- */
.landing-footer {
  max-width: 1240px; margin: 80px auto 0; padding: 26px 28px 40px;
  border-top: 1px solid var(--border); display: flex; justify-content: space-between;
  align-items: center; color: var(--faint); font-size: 13px;
}

@media (max-width: 1024px) {
  .landing-topics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .landing-tools { grid-template-columns: 1fr; }
  .landing-how { grid-template-columns: 1fr; }
  .landing-how li:not(:last-child)::after { display: none; }
  .landing-cta-inner { grid-template-columns: 1fr; gap: 32px; padding: 40px; }
  .landing-cta-card { max-width: 360px; width: 100%; margin: 0 auto; }
}

@media (max-width: 900px) {
  .landing-trial-grid { grid-template-columns: 1fr; gap: 16px; }
  .landing-nav-links { display: none; }
  /* 移动端导航：按钮不换行、不挤压 */
  .landing-nav { padding: 12px 16px; gap: 10px; }
  .landing-brand strong { font-size: 16px; }
  .landing-nav-actions { gap: 8px; }
  .landing-ghost, .landing-primary { height: 34px; padding: 0 12px; font-size: 13px; white-space: nowrap; }
  #themeToggle { display: none; }
  .landing-hero { padding-top: 56px; }
  .landing-proof { gap: 28px; }
  .landing-section { padding-top: 56px; }
  .lp-topic { padding: 22px 20px 18px; }
  .landing-cta { margin-top: 64px; }
  .landing-cta-inner { padding: 28px; border-radius: 22px; }
  .landing-cta-actions .landing-primary,
  .landing-cta-actions .landing-ghost { flex: 1; min-width: 0; }
  .landing-footer { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 640px) {
  .landing-topics { grid-template-columns: 1fr; }
  .landing-section-head { padding-left: 14px; }
  .lp-tool { grid-template-columns: 44px minmax(0, 1fr); column-gap: 14px; padding: 20px; }
  .lp-tool-icon { width: 44px; height: 44px; border-radius: 13px; }
  .lp-tool-icon svg { width: 22px; height: 22px; }
  .landing-faq summary { font-size: 14.5px; }
  .landing-faq p { padding-right: 0; }
}