/* ==========================================================================
   恒星璀璨 TNTSTAR · 影院级首页样式（依赖 styles.css 的令牌，在其之上扩展）
   ========================================================================== */

/* ---------- 开场遮罩 ---------- */
.intro{
  position:fixed;inset:0;z-index:200;background:var(--bg-sunken);
  display:grid;place-items:center;gap:0;
  transition:opacity 700ms var(--ease-out),visibility 700ms;
}
.intro.is-done{opacity:0;visibility:hidden}
.intro__mark{
  width:56px;height:56px;border-radius:50%;
  background:radial-gradient(circle at 32% 28%,var(--star-2),var(--star) 42%,#8A5F16 100%);
  box-shadow:0 0 0 1px rgba(255,217,138,.35),0 0 60px rgba(233,180,76,.35);
  animation:introPulse 1.4s var(--ease-out) infinite alternate;
}
.intro__word{margin-top:22px;font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:var(--ink-faint)}
@keyframes introPulse{from{transform:scale(.92);opacity:.75}to{transform:scale(1);opacity:1}}

/* ---------- 阅读进度条 ---------- */
.progress{position:fixed;top:0;left:0;height:2px;width:100%;z-index:60;background:transparent;pointer-events:none}
.progress__bar{height:100%;width:0;background:linear-gradient(90deg,var(--star),var(--blaze));box-shadow:0 0 18px rgba(233,180,76,.5)}

/* ---------- 光标光晕（仅指针设备） ---------- */
.cursor{
  position:fixed;top:0;left:0;width:520px;height:520px;margin:-260px 0 0 -260px;
  border-radius:50%;pointer-events:none;z-index:1;opacity:0;
  background:radial-gradient(circle,rgba(233,180,76,.10),rgba(233,180,76,.04) 40%,transparent 68%);
  mix-blend-mode:screen;transition:opacity 400ms linear;
}
@media (pointer:coarse){ .cursor{display:none} }

/* ---------- 窄窗口提示 ---------- */
.hintbar{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:70;
  display:none;align-items:center;gap:12px;max-width:92vw;
  background:var(--glass);border:1px solid var(--hair-strong);border-radius:var(--r-pill);
  padding:10px 16px;font-size:13px;color:var(--ink-sub);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.hintbar.is-on{display:flex}
.hintbar button{background:none;border:0;color:var(--star);font-size:13px;cursor:pointer;padding:0}

/* ---------- 整屏首屏 ---------- */
.stage{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
.stage__canvas{position:absolute;inset:0;z-index:0;opacity:.9}
.stage__beam{
  position:absolute;top:-30%;left:50%;width:140%;height:150%;z-index:0;pointer-events:none;
  transform:translateX(-50%);
  background:
    conic-gradient(from 210deg at 50% 20%,transparent 0deg,rgba(233,180,76,.10) 40deg,transparent 90deg),
    radial-gradient(44% 38% at 26% 16%,rgba(233,180,76,.20),transparent 62%),
    radial-gradient(34% 30% at 82% 6%,rgba(61,123,255,.14),transparent 60%);
  animation:beamDrift 18s ease-in-out infinite alternate;
}
@keyframes beamDrift{from{transform:translateX(-52%) rotate(-1.5deg)}to{transform:translateX(-48%) rotate(1.5deg)}}
.stage__grid{
  position:absolute;inset:0;z-index:0;opacity:.35;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:96px 96px;
  mask-image:radial-gradient(70% 60% at 50% 40%,#000 10%,transparent 80%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 40%,#000 10%,transparent 80%);
}
.stage__in{position:relative;z-index:2;display:grid;gap:var(--s6);padding-block:var(--s10) var(--s9)}
.stage__meta{display:flex;flex-wrap:wrap;gap:var(--s4);align-items:center}

/* 逐行揭幕大字 */
.kinetic{margin:0}
.kline{display:block;overflow:hidden;padding-bottom:.04em}
.kline>span{display:block;transform:translateY(115%);opacity:0;
  transition:transform 1100ms var(--ease-out),opacity 700ms var(--ease-out)}
.in .kline>span{transform:none;opacity:1}
.in .kline:nth-child(1)>span{transition-delay:80ms}
.in .kline:nth-child(2)>span{transition-delay:220ms}
.in .kline:nth-child(3)>span{transition-delay:360ms}

.stage__lead{max-width:58ch}
.stage__cta{display:flex;flex-wrap:wrap;gap:var(--s4);align-items:center}

/* 滚动提示 */
.scrollcue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;display:grid;justify-items:center;gap:10px}
.scrollcue span{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-faint)}
.scrollcue i{display:block;width:1px;height:52px;background:linear-gradient(180deg,var(--star),transparent);animation:cueDrop 2.2s var(--ease-io) infinite}
@keyframes cueDrop{0%{transform:scaleY(0);transform-origin:top;opacity:0}40%{opacity:1}100%{transform:scaleY(1);transform-origin:top;opacity:0}}

/* ---------- 跑马灯字幕带 ---------- */
.marquee{position:relative;z-index:2;border-block:1px solid var(--hair);background:rgba(3,4,6,.6);overflow:hidden;padding-block:16px}
.marquee__track{display:flex;gap:var(--s7);white-space:nowrap;will-change:transform;animation:marquee 30s linear infinite}
.marquee__track>*{display:inline-flex;align-items:center;gap:var(--s7);font-size:13px;letter-spacing:.26em;text-transform:uppercase;color:var(--ink-faint)}
.marquee__track b{color:var(--star);font-weight:400}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 影像占位框（有设计感，不是灰块） ---------- */
.frame{
  position:relative;border-radius:var(--r-md);border:1px solid var(--hair);overflow:hidden;
  background:
    radial-gradient(120% 100% at 20% 0%,rgba(233,180,76,.16),transparent 55%),
    radial-gradient(100% 90% at 90% 20%,rgba(61,123,255,.12),transparent 60%),
    linear-gradient(160deg,#10131B 0%,#0A0C11 45%,#06070B 100%);
  isolation:isolate;
}
.frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.045) 0 1px,transparent 1px 3px);
}
.frame::before{
  content:"";position:absolute;top:0;left:-40%;width:40%;height:100%;z-index:2;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.10),transparent);
  transform:skewX(-12deg);transition:left 900ms var(--ease-out);
}
.frame:hover::before{left:120%}
.frame__tag{
  position:absolute;left:16px;top:16px;z-index:3;
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--star);
  border:1px solid rgba(233,180,76,.4);border-radius:var(--r-pill);padding:4px 12px;background:rgba(6,7,11,.5);
}
.frame__cap{position:absolute;left:18px;right:18px;bottom:16px;z-index:3;display:flex;justify-content:space-between;align-items:flex-end;gap:var(--s4)}
.frame__cap b{font-size:15px;font-weight:600}
.frame__cap em{font-style:normal;font-size:12px;color:var(--ink-faint)}
.frame--16x9{aspect-ratio:16/9}
.frame--21x9{aspect-ratio:21/9}
.frame--4x5{aspect-ratio:4/5}
.frame__play{
  position:absolute;inset:0;z-index:4;display:grid;place-items:center;gap:0;
  background:none;border:0;cursor:pointer;
}
.frame__play i{
  width:78px;height:78px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,217,138,.5);background:rgba(6,7,11,.42);
  backdrop-filter:blur(10px);transition:transform var(--d-md) var(--ease-out),box-shadow var(--d-md) var(--ease-out);
  color:var(--star-2);font-size:20px;font-style:normal;
}
.frame__play:hover i{transform:scale(1.08);box-shadow:0 0 48px rgba(233,180,76,.4)}

/* ---------- 品牌片区块 ---------- */
.reel{position:relative;padding-block:var(--s9)}
.reel__head{display:grid;gap:var(--s4);margin-bottom:var(--s7)}

/* ---------- 横向滚动编排 ---------- */
.pin{position:relative;padding-block:var(--s9);overflow:hidden;background:var(--bg-sunken);border-block:1px solid var(--hair)}
.pin__head{display:grid;gap:var(--s3);margin-bottom:var(--s7)}
.pin__viewport{margin-inline:calc(50% - 50vw);padding-inline:max(24px,calc((100vw - 1280px)/2));overflow:visible}
.pin__track{display:flex;gap:var(--s6);will-change:transform}
.pin__card{
  flex:0 0 clamp(280px,34vw,460px);border:1px solid var(--hair);border-radius:var(--r-md);
  padding:var(--s7);background:linear-gradient(180deg,rgba(255,255,255,.028),transparent);
  display:grid;gap:var(--s4);align-content:start;
}
.pin__no{font-size:clamp(44px,6vw,84px);font-weight:800;line-height:1;letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px rgba(233,180,76,.55)}
.pin__card h3{font-size:clamp(20px,2vw,26px)}

/* ---------- 痛点（大字编号 + 悬停揭示） ---------- */
.pains{display:grid;gap:0;border-top:1px solid var(--hair)}
.painline{
  display:grid;grid-template-columns:88px 1fr auto;gap:var(--s5);align-items:center;
  padding-block:var(--s5);border-bottom:1px solid var(--hair);position:relative;
  transition:padding-inline var(--d-md) var(--ease-out),background var(--d-md) linear;
}
.painline::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(233,180,76,.10),transparent 60%);opacity:0;transition:opacity var(--d-md) linear}
.painline:hover{padding-inline:var(--s5)}
.painline:hover::before{opacity:1}
.painline__no{font-size:13px;letter-spacing:.14em;color:var(--ink-faint);font-weight:700}
.painline__q{font-size:clamp(16px,1.6vw,20px);position:relative;z-index:1}
.painline__a{font-size:14px;color:var(--ink-sub);max-width:44ch;position:relative;z-index:1;opacity:.75;transition:opacity var(--d-md) linear,color var(--d-md) linear}
.painline:hover .painline__a{opacity:1;color:var(--star)}
@media (max-width:900px){ .painline{grid-template-columns:56px 1fr} .painline__a{grid-column:2} }

/* ---------- 数据带 ---------- */
.numbers{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--hair);border-radius:var(--r-md);overflow:hidden}
.numbers>div{padding:var(--s7) var(--s5);border-right:1px solid var(--hair);display:grid;gap:8px}
.numbers>div:last-child{border-right:0}
.numbers b{font-size:clamp(30px,3.6vw,52px);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1}
.numbers span{font-size:13px;color:var(--ink-sub)}
@media (max-width:900px){ .numbers{grid-template-columns:repeat(2,1fr)} .numbers>div:nth-child(2){border-right:0} .numbers>div:nth-child(1),.numbers>div:nth-child(2){border-bottom:1px solid var(--hair)} }

/* ---------- 磁吸按钮 ---------- */
.magnet{transition:transform 260ms var(--ease-out)}

/* ---------- 大下载区 ---------- */
.bigdl{position:relative;overflow:hidden;background:var(--bg-sunken);border-block:1px solid var(--hair);padding-block:clamp(64px,8vw,140px)}
.bigdl__glow{position:absolute;inset:auto -20% -60% -20%;height:120%;background:radial-gradient(46% 60% at 50% 100%,rgba(233,180,76,.20),transparent 70%);pointer-events:none}
.bigdl__in{position:relative;z-index:2;display:grid;gap:var(--s6)}
.devices{display:flex;flex-wrap:wrap;gap:var(--s5);align-items:flex-end;justify-content:center;margin-top:var(--s6)}
.device{
  border:1px solid var(--hair-strong);border-radius:10px;position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01));
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.device::after{content:"";position:absolute;inset:6px;border-radius:6px;border:1px solid rgba(255,255,255,.06)}
.device--monitor{width:210px;height:132px}
.device--laptop{width:170px;height:108px}
.device--phone{width:74px;height:150px;border-radius:14px}
.device--pad{width:112px;height:152px;border-radius:12px}

/* ---------- 创始人 ---------- */
.founder-cine{display:grid;grid-template-columns:.85fr 1.15fr;gap:var(--s9);align-items:center}
@media (max-width:900px){ .founder-cine{grid-template-columns:1fr;gap:var(--s6)} }

/* ---------- 巨型页脚字标 ---------- */
.wordmark{font-size:clamp(48px,13vw,200px);font-weight:800;letter-spacing:-.05em;line-height:.9;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.14);margin:0;user-select:none}

/* ---------- 页面切换过渡 ---------- */
.veil{position:fixed;inset:0;z-index:190;background:var(--bg-sunken);opacity:0;visibility:hidden;transition:opacity 420ms var(--ease-out),visibility 420ms}
.veil.is-on{opacity:1;visibility:visible}

/* ---------- 通用揭示 ---------- */
.rise{opacity:0;transform:translateY(28px);transition:opacity 900ms var(--ease-out),transform 900ms var(--ease-out)}
.rise.in{opacity:1;transform:none}
.rise[data-d="1"]{transition-delay:120ms}
.rise[data-d="2"]{transition-delay:240ms}
.rise[data-d="3"]{transition-delay:360ms}
.mask{clip-path:inset(0 0 100% 0);transition:clip-path 1000ms var(--ease-out)}
.mask.in{clip-path:inset(0 0 0 0)}

@media (prefers-reduced-motion:reduce){
  .intro{display:none}
  .marquee__track,.stage__beam,.intro__mark,.scrollcue i,.device{animation:none !important}
  .kline>span,.rise{transform:none !important;opacity:1 !important}
  .mask{clip-path:none !important}
  .cursor{display:none}
}