/* ============================================================
   tvOS 专版页面样式
   依赖 css/index.css 中的变量与基础组件
   ============================================================ */

/* ---------- 导航当前页标记 ---------- */
.nav-links a.is-current{
  color:var(--text);
  background:rgba(255,255,255,.08);
  position:relative;
}
.nav-links a.is-current::after{
  content:"";position:absolute;left:50%;bottom:3px;
  width:14px;height:2px;margin-left:-7px;border-radius:2px;
  background:var(--grad);
}

/* ---------- Hero 微调 ---------- */
.tv-hero{padding-bottom:70px}
.tv-hero .sub{margin-bottom:52px}

/* ---------- 电视模拟 ---------- */
.tv-demo{
  position:relative;
  max-width:820px;margin:0 auto;
  padding-bottom:36px;
}

/* 环境光晕 */
.tv-glow{
  position:absolute;
  left:50%;bottom:0;transform:translateX(-50%);
  width:76%;height:120px;
  background:radial-gradient(ellipse at center,
    rgba(46,230,255,.28),rgba(165,107,255,.14) 45%,transparent 72%);
  filter:blur(38px);
  pointer-events:none;
  z-index:0;
}

/* 电视外框 */
.tv-frame{
  position:relative;z-index:1;
  border-radius:22px;
  padding:10px;
  background:linear-gradient(160deg,#1d2434,#0c0f18 60%,#080b13);
  box-shadow:
    0 40px 100px rgba(0,0,0,.6),
    0 0 0 1px rgba(255,255,255,.07),
    inset 0 1px 0 rgba(255,255,255,.09);
}
.tv-bezel{
  border-radius:14px;
  overflow:hidden;
  background:#000;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.05);
}

/* 屏幕 */
.tv-screen{
  position:relative;
  aspect-ratio:16/9;
  padding:5% 6%;
  display:flex;flex-direction:column;
  background:
    radial-gradient(ellipse 80% 90% at 20% 0%,rgba(46,230,255,.09),transparent 60%),
    radial-gradient(ellipse 80% 90% at 90% 100%,rgba(165,107,255,.08),transparent 60%),
    linear-gradient(180deg,#0a0e18,#060810);
  overflow:hidden;
}

/* 屏幕顶部状态 */
.tv-top{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;margin-bottom:auto;
}
.tv-brand{
  display:flex;align-items:center;gap:9px;
  font-size:clamp(10px,1.4vw,13px);
  font-weight:620;letter-spacing:-.008em;color:#dfe5f2;
}
.tv-logo{
  display:flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:7px;
  background:rgba(46,230,255,.12);
  border:1px solid rgba(46,230,255,.28);
  flex-shrink:0;
}
.tv-logo svg{width:13px;height:13px;stroke:var(--c1)}
.tv-status{
  display:flex;align-items:center;gap:7px;
  font-size:clamp(9px,1.2vw,11.5px);
  color:#5fd6a8;font-weight:560;
  padding:5px 11px;border-radius:999px;
  background:rgba(95,214,168,.08);
  border:1px solid rgba(95,214,168,.2);
  white-space:nowrap;
}
.tv-dot{
  width:5px;height:5px;border-radius:50%;flex-shrink:0;
  background:#3ddc97;box-shadow:0 0 8px #3ddc97;
  animation:pulse 2.4s ease-in-out infinite;
}

/* 覆盖网格 */
.tv-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(8px,1.6vw,18px);
  margin:auto 0;
  padding:clamp(14px,2.5vw,28px) 0;
}

.tv-item{
  position:relative;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:clamp(5px,1vw,9px);
  padding:clamp(12px,2.2vw,22px) clamp(6px,1.2vw,14px);
  border-radius:clamp(10px,1.6vw,16px);
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.028);
  transition:transform .35s cubic-bezier(.22,1,.36,1),border-color .35s,background .35s,box-shadow .35s;
  cursor:default;
}
.tv-icon{
  display:flex;align-items:center;justify-content:center;
  width:clamp(20px,3vw,30px);height:clamp(20px,3vw,30px);
  color:#8fa0bd;
  transition:color .35s,transform .35s;
}
.tv-icon svg{width:100%;height:100%}
.tv-label{
  font-size:clamp(9px,1.25vw,12.5px);
  color:#96a3bc;font-weight:560;letter-spacing:.01em;
  transition:color .35s;
  white-space:nowrap;
}

/* 焦点态 */
.tv-item.focus{
  border-color:rgba(46,230,255,.6);
  background:rgba(46,230,255,.09);
  box-shadow:
    0 0 0 1px rgba(46,230,255,.22),
    0 12px 34px rgba(46,230,255,.22),
    inset 0 0 24px rgba(46,230,255,.06);
  transform:scale(1.06);
}
.tv-item.focus .tv-icon{color:var(--c1);transform:scale(1.08)}
.tv-item.focus .tv-label{color:#e9f4ff;font-weight:640}

/* 屏幕底部提示 */
.tv-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin-top:auto;
  padding-top:clamp(8px,1.5vw,14px);
  border-top:1px solid rgba(255,255,255,.06);
}
.tv-hint{
  font-size:clamp(9px,1.15vw,11.5px);
  color:#7c88a0;letter-spacing:.02em;
}
.tv-remote{
  font-size:clamp(9px,1.15vw,11.5px);
  color:#b9c4d8;
  padding:4px 10px;border-radius:6px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.09);
  white-space:nowrap;
}
.tv-remote b{color:var(--c1);font-weight:700}

/* ---------- 家庭共享 ---------- */
.family-wrap{
  display:grid;grid-template-columns:1.1fr 1fr;gap:22px;
  align-items:start;
}

/* 左：家庭场景 */
.family-scene{
  border:1px solid var(--line);border-radius:18px;
  overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
}
.scene-item{
  display:flex;align-items:center;gap:20px;
  padding:22px 26px;
  border-bottom:1px solid var(--line);
  transition:background .3s,padding-left .3s;
}
.scene-item:last-child{border-bottom:none}
.scene-item:hover{background:rgba(255,255,255,.028);padding-left:30px}
.scene-role{
  flex-shrink:0;
  min-width:64px;
  font-size:14px;font-weight:660;
  letter-spacing:-.012em;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.scene-desc{
  font-size:14px;color:var(--muted);
  line-height:1.6;
}

/* 右：说明 */
.family-notes{display:flex;flex-direction:column;gap:14px}
.note-item{
  padding:24px 24px;border-radius:15px;
  border:1px solid var(--line);background:var(--card);
  transition:border-color .3s,background .3s,transform .3s cubic-bezier(.22,1,.36,1);
}
.note-item:hover{
  border-color:rgba(46,230,255,.26);
  background:var(--card-hi);
  transform:translateX(4px);
}
.note-item h3{
  font-size:15.5px;font-weight:650;
  letter-spacing:-.014em;margin-bottom:8px;
}
.note-item p{font-size:13.5px;color:var(--muted);line-height:1.74}

/* ---------- FAQ 折叠 ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{
  border:1px solid var(--line);border-radius:16px;
  background:var(--card);overflow:hidden;
  transition:border-color .3s,background .3s;
}
.faq details[open]{
  border-color:rgba(46,230,255,.28);
  background:var(--card-hi);
}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 24px;
  font-size:15.5px;font-weight:600;
  letter-spacing:-.012em;
  transition:color .24s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c1)}
.faq summary::after{
  content:"";position:absolute;right:26px;top:50%;
  width:9px;height:9px;margin-top:-6px;
  border-right:1.8px solid var(--muted);
  border-bottom:1.8px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .3s cubic-bezier(.22,1,.36,1),border-color .3s;
}
.faq details[open] summary::after{
  transform:rotate(-135deg);
  margin-top:-2px;
  border-color:var(--c1);
}
.faq .ans{
  padding:0 24px 22px;
  font-size:14.5px;color:var(--muted);line-height:1.78;
  max-width:820px;
}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .family-wrap{grid-template-columns:1fr}
}

@media(max-width:960px){
  .grid.g4{grid-template-columns:repeat(2,1fr)}
  .tv-grid{grid-template-columns:repeat(3,1fr)}
}

@media(max-width:680px){
  .tv-hero{padding-bottom:48px}
  .tv-hero .sub{margin-bottom:36px}

  /* 电视外框收紧 */
  .tv-frame{padding:7px;border-radius:16px}
  .tv-bezel{border-radius:11px}
  .tv-demo{padding-bottom:26px}
  .tv-glow{height:80px}

  /* 屏幕内边距增大，网格变两列 */
  .tv-screen{padding:6% 7%}
  .tv-grid{grid-template-columns:repeat(2,1fr)}
  .tv-brand span:last-child{display:none}
  .tv-hint{display:none}
  .tv-remote{margin-left:auto}

  .scene-item{padding:18px 20px;gap:16px}
  .scene-role{min-width:56px;font-size:13px}
  .scene-desc{font-size:13px}

  .faq summary{padding:18px 50px 18px 20px;font-size:15px}
  .faq .ans{padding:0 20px 20px}
}

/* ---------- 减少动效偏好 ---------- */
@media(prefers-reduced-motion:reduce){
  .tv-dot{animation:none}
  .tv-item.focus{transform:none}
}