/* v0.9.13 — Tutorial page ([ai_platform_tutorial]): card index + article view.
 * Builds on public-home.css (brand tokens, top bar, footer). Three independent
 * layouts: Phone ≤520px, Tab 521–1199px, Desktop ≥1200px.
 */
.ai-platform-tutorial{
  --tutorial-surface:#10141e;
  --tutorial-surface-2:#151a26;
  --tutorial-line:rgba(148,177,218,.14);
  --tutorial-text:var(--aip-public-text,#f7f9ff);
  --tutorial-muted:var(--aip-public-muted,#9da8bc);
}
.ai-platform-tutorial .ai-platform-tutorial__main{
  width:min(1180px,calc(100% - 48px));
  margin:0 auto;
  flex:1 0 auto;
  padding:56px 0 88px;
  box-sizing:border-box;
}

/* ---------- Index ---------- */
.ai-platform-tutorial .ai-platform-tutorial__intro{
  max-width:680px;
  margin:0 0 40px;
}
.ai-platform-tutorial .ai-platform-tutorial__intro h1{
  margin:16px 0 12px;
  color:var(--tutorial-text);
  font-size:clamp(34px,4.4vw,52px);
  line-height:1.05;
  letter-spacing:-.04em;
  font-weight:700;
}
.ai-platform-tutorial .ai-platform-tutorial__intro p{
  margin:0;
  color:var(--tutorial-muted);
  font-size:15px;
  line-height:1.6;
}
.ai-platform-tutorial .ai-platform-tutorial__notice{
  margin-top:14px !important;
  color:#ffd45a !important;
}
.ai-platform-tutorial .ai-platform-tutorial__empty{color:var(--tutorial-muted)}

.ai-platform-tutorial .ai-platform-tutorial__grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}

.ai-platform-tutorial .ai-platform-tutorial-card{
  position:relative;
  display:flex;
  flex-direction:column;
  min-width:0;
  border-radius:18px;
  background:
    linear-gradient(var(--tutorial-surface),var(--tutorial-surface)) padding-box,
    linear-gradient(160deg,rgba(148,177,218,.18),rgba(148,177,218,.06)) border-box;
  border:1px solid transparent;
  color:var(--tutorial-text);
  text-decoration:none !important;
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease;
}
.ai-platform-tutorial .ai-platform-tutorial-card:hover,
.ai-platform-tutorial .ai-platform-tutorial-card:focus-visible{
  transform:translateY(-4px);
  background:
    linear-gradient(var(--tutorial-surface),var(--tutorial-surface)) padding-box,
    var(--aip-brand-gradient) border-box;
  box-shadow:0 22px 50px rgba(0,0,0,.38),0 0 40px color-mix(in srgb,var(--tutorial-accent) 22%,transparent);
  outline:none;
}
.ai-platform-tutorial .ai-platform-tutorial-card__head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:12px 16px;
  color:var(--tutorial-muted);
  font-size:10px;
  font-weight:800;
  letter-spacing:.16em;
}
.ai-platform-tutorial .ai-platform-tutorial-card__head span:last-child{
  font-variant-numeric:tabular-nums;
  color:color-mix(in srgb,var(--tutorial-accent) 70%,#ffffff);
}

/* Cover: a glow in the tool's colour, the screenshot as a floating panel, the
 * tool icon and the AIGC Motion mark. */
.ai-platform-tutorial .ai-platform-tutorial-card__cover{
  position:relative;
  display:block;
  aspect-ratio:16/10;
  margin:0 10px;
  border-radius:12px;
  overflow:hidden;
}
.ai-platform-tutorial .ai-platform-tutorial-cover{
  position:absolute;
  inset:0;
  display:block;
  background:
    radial-gradient(120% 90% at 85% 110%,color-mix(in srgb,var(--tutorial-accent) 55%,transparent),transparent 60%),
    radial-gradient(80% 70% at 0% 0%,rgba(57,215,255,.14),transparent 65%),
    linear-gradient(150deg,#0d1220 0%,#0a0d17 100%);
}
.ai-platform-tutorial .ai-platform-tutorial-cover__glow{
  position:absolute;
  inset:-30%;
  background:conic-gradient(from 210deg at 70% 70%,transparent 0deg,color-mix(in srgb,var(--tutorial-accent) 30%,transparent) 60deg,transparent 140deg);
  filter:blur(30px);
  opacity:.7;
  transition:opacity .3s ease;
}
.ai-platform-tutorial .ai-platform-tutorial-cover__shot{
  position:absolute;
  left:20%;
  top:26%;
  width:150%;
  height:auto;
  max-width:none;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 18px 40px rgba(0,0,0,.55);
  transform:rotate(-4deg);
  transform-origin:left top;
  transition:transform .35s ease;
}
.ai-platform-tutorial .ai-platform-tutorial-card:hover .ai-platform-tutorial-cover__shot{transform:rotate(-2deg) translateY(-6px) scale(1.03)}
.ai-platform-tutorial .ai-platform-tutorial-card:hover .ai-platform-tutorial-cover__glow{opacity:1}
.ai-platform-tutorial .ai-platform-tutorial-cover__icon{
  position:absolute;
  left:16px;
  top:16px;
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  border-radius:14px;
  background:rgba(10,14,24,.55);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(10px);
  color:color-mix(in srgb,var(--tutorial-accent) 75%,#ffffff);
  box-shadow:0 0 24px color-mix(in srgb,var(--tutorial-accent) 35%,transparent);
}
.ai-platform-tutorial .ai-platform-tutorial-cover__icon svg{width:24px;height:24px}
.ai-platform-tutorial .ai-platform-tutorial-cover__mark{
  position:absolute;
  right:12px;
  bottom:10px;
  width:28px;
  height:28px;
  opacity:.9;
  filter:drop-shadow(0 0 10px rgba(57,215,255,.45));
}
.ai-platform-tutorial .ai-platform-tutorial-card__read{
  position:absolute;
  left:14px;
  bottom:12px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 11px;
  border-radius:999px;
  background:rgba(8,11,19,.72);
  border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(8px);
  color:#fff;
  font-size:10px;
  font-weight:800;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.ai-platform-tutorial .ai-platform-tutorial-card__read svg{width:13px;height:13px}

.ai-platform-tutorial .ai-platform-tutorial-card__body{
  display:flex;
  flex-direction:column;
  gap:7px;
  padding:16px 16px 18px;
  flex:1 1 auto;
}
.ai-platform-tutorial .ai-platform-tutorial-card__title{
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.25;
}
.ai-platform-tutorial .ai-platform-tutorial-card__summary{
  color:var(--tutorial-muted);
  font-size:13px;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.ai-platform-tutorial .ai-platform-tutorial-card__tag{
  align-self:flex-start;
  margin-top:4px;
  padding:3px 9px;
  border-radius:6px;
  border:1px solid color-mix(in srgb,var(--tutorial-accent) 45%,transparent);
  background:color-mix(in srgb,var(--tutorial-accent) 10%,transparent);
  color:color-mix(in srgb,var(--tutorial-accent) 70%,#ffffff);
  font-size:10px;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
}

/* ---------- Article ---------- */
.ai-platform-tutorial .ai-platform-tutorial-article{max-width:1080px;margin:0 auto}
.ai-platform-tutorial .ai-platform-tutorial-article__back{
  display:inline-block;
  margin-bottom:22px;
  color:var(--tutorial-muted) !important;
  font-size:13px;
  text-decoration:none !important;
}
.ai-platform-tutorial .ai-platform-tutorial-article__back:hover{color:var(--tutorial-text) !important}
.ai-platform-tutorial .ai-platform-tutorial-article__hero{
  position:relative;
  padding:34px 36px;
  margin-bottom:38px;
  border-radius:20px;
  border:1px solid var(--tutorial-line);
  background:
    radial-gradient(70% 120% at 100% 0%,color-mix(in srgb,var(--tutorial-accent) 26%,transparent),transparent 62%),
    linear-gradient(160deg,#121827,#0c101a);
  overflow:hidden;
}
.ai-platform-tutorial .ai-platform-tutorial-article__meta{
  display:flex;
  gap:10px;
  color:color-mix(in srgb,var(--tutorial-accent) 70%,#ffffff);
  font-size:10px;
  font-weight:800;
  letter-spacing:.16em;
}
.ai-platform-tutorial .ai-platform-tutorial-article__meta span + span::before{content:"·";margin-right:10px;color:var(--tutorial-muted)}
.ai-platform-tutorial .ai-platform-tutorial-article__hero h1{
  margin:12px 0 10px;
  color:var(--tutorial-text);
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.08;
  letter-spacing:-.035em;
  font-weight:700;
}
.ai-platform-tutorial .ai-platform-tutorial-article__hero p{
  max-width:620px;
  margin:0;
  color:var(--tutorial-muted);
  font-size:15px;
  line-height:1.6;
}
.ai-platform-tutorial .ai-platform-tutorial-article__cta{
  display:inline-flex;
  margin-top:20px;
  padding:10px 18px;
  border-radius:11px;
  background:linear-gradient(110deg,var(--aip-brand-cyan,#39d7ff),var(--aip-brand-blue,#1688ff) 45%,var(--aip-brand-purple,#6b3cff));
  color:#fff !important;
  font-size:13px;
  font-weight:700;
  text-decoration:none !important;
  box-shadow:0 10px 28px rgba(22,136,255,.28);
}
.ai-platform-tutorial .ai-platform-tutorial-article__cta:hover{filter:brightness(1.08)}

.ai-platform-tutorial .ai-platform-tutorial-article__layout{display:block}
.ai-platform-tutorial .ai-platform-tutorial-article__toc{display:none}

/* Article body: styles for what the block editor produces. */
.ai-platform-tutorial .ai-platform-tutorial-article__content{
  max-width:740px;
  color:#d9e0ec;
  font-size:15px;
  line-height:1.72;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content > *{margin-top:0;margin-bottom:18px}
.ai-platform-tutorial .ai-platform-tutorial-article__content h2{
  position:relative;
  margin:44px 0 14px !important;
  padding-left:14px;
  color:var(--tutorial-text);
  font-size:23px;
  line-height:1.25;
  letter-spacing:-.02em;
  font-weight:700;
  scroll-margin-top:24px;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content h2:first-child{margin-top:0 !important}
.ai-platform-tutorial .ai-platform-tutorial-article__content h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--tutorial-accent),var(--aip-brand-purple,#6b3cff));
}
.ai-platform-tutorial .ai-platform-tutorial-article__content h3{color:var(--tutorial-text);font-size:18px;margin:28px 0 10px}
.ai-platform-tutorial .ai-platform-tutorial-article__content a{color:var(--aip-brand-cyan,#39d7ff)}
.ai-platform-tutorial .ai-platform-tutorial-article__content strong{color:#fff}
.ai-platform-tutorial .ai-platform-tutorial-article__content :not(pre) > code{
  padding:2px 6px;
  border-radius:5px;
  background:rgba(255,255,255,.07);
  font-size:.9em;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content ul,
.ai-platform-tutorial .ai-platform-tutorial-article__content ol{padding-left:0;list-style:none}
.ai-platform-tutorial .ai-platform-tutorial-article__content li{position:relative;margin:0 0 10px;padding-left:28px}
.ai-platform-tutorial .ai-platform-tutorial-article__content ul > li::before{
  content:"";
  position:absolute;
  left:8px;
  top:.68em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--tutorial-accent);
  box-shadow:0 0 8px var(--tutorial-accent);
}
.ai-platform-tutorial .ai-platform-tutorial-article__content ol{counter-reset:tutorial-step}
.ai-platform-tutorial .ai-platform-tutorial-article__content ol > li{counter-increment:tutorial-step;padding-left:38px;min-height:26px}
.ai-platform-tutorial .ai-platform-tutorial-article__content ol > li::before{
  content:counter(tutorial-step);
  position:absolute;
  left:0;
  top:.1em;
  display:grid;
  place-items:center;
  width:25px;
  height:25px;
  border-radius:8px;
  background:color-mix(in srgb,var(--tutorial-accent) 16%,transparent);
  border:1px solid color-mix(in srgb,var(--tutorial-accent) 45%,transparent);
  color:#fff;
  font-size:12px;
  font-weight:700;
  line-height:1;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content figure{margin:26px 0 !important}
.ai-platform-tutorial .ai-platform-tutorial-article__content figure img{
  display:block;
  width:100%;
  height:auto;
  border-radius:14px;
  border:1px solid var(--tutorial-line);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.ai-platform-tutorial .ai-platform-tutorial-article__content figcaption{
  margin-top:10px;
  color:var(--tutorial-muted);
  font-size:12px;
  text-align:center;
}
/* Prompt examples: code blocks with a Copy button (tutorial.js). */
.ai-platform-tutorial .ai-platform-tutorial-article__content .is-tutorial-prompt-label{
  margin:22px 0 8px;
  color:color-mix(in srgb,var(--tutorial-accent) 70%,#ffffff);
  font-size:11px;
  font-weight:800;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content pre{
  position:relative;
  margin:0 0 18px;
  padding:16px 18px 16px 18px;
  border-radius:12px;
  border:1px solid var(--tutorial-line);
  background:linear-gradient(160deg,#121827,#0d121d);
  color:#e9eef7;
  white-space:pre-wrap;
  word-break:break-word;
  font-family:inherit;
  font-size:14px;
  line-height:1.6;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content pre code{font:inherit;background:none;padding:0;color:inherit}
.ai-platform-tutorial .ai-platform-tutorial-article__content pre.has-copy{padding-right:84px}
.ai-platform-tutorial .ai-platform-tutorial-copy{
  position:absolute;
  right:10px;
  top:10px;
  padding:5px 10px;
  border-radius:8px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);
  color:#dfe6f2;
  font:inherit;
  font-size:11px;
  font-weight:700;
  cursor:pointer;
}
.ai-platform-tutorial .ai-platform-tutorial-copy:hover{background:rgba(255,255,255,.1)}
.ai-platform-tutorial .ai-platform-tutorial-copy.is-copied{border-color:rgba(46,230,168,.6);color:#2ee6a8}
/* Tips: any quote block. */
.ai-platform-tutorial .ai-platform-tutorial-article__content blockquote{
  position:relative;
  margin:22px 0 !important;
  padding:16px 18px 16px 52px;
  border:1px solid color-mix(in srgb,var(--tutorial-accent) 32%,transparent);
  border-left:1px solid color-mix(in srgb,var(--tutorial-accent) 32%,transparent) !important;
  border-radius:12px;
  background:color-mix(in srgb,var(--tutorial-accent) 7%,#0e131e);
  color:#dce3ef;
  font-style:normal;
  font-size:14px;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content blockquote::before{
  content:"";
  position:absolute;
  left:16px;
  top:17px;
  width:22px;
  height:22px;
  background:var(--tutorial-accent);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 18h6M10 21h4M12 3a6 6 0 0 0-3.6 10.8c.5.4.8 1 .8 1.6V16h5.6v-.6c0-.6.3-1.2.8-1.6A6 6 0 0 0 12 3z'/%3E%3C/svg%3E") center/contain no-repeat;
          mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 18h6M10 21h4M12 3a6 6 0 0 0-3.6 10.8c.5.4.8 1 .8 1.6V16h5.6v-.6c0-.6.3-1.2.8-1.6A6 6 0 0 0 12 3z'/%3E%3C/svg%3E") center/contain no-repeat;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content blockquote p{margin:0}
.ai-platform-tutorial .ai-platform-tutorial-article__content blockquote cite{display:none}
/* FAQ: details blocks. */
.ai-platform-tutorial .ai-platform-tutorial-article__content details{
  margin:0 0 10px !important;
  border:1px solid var(--tutorial-line);
  border-radius:12px;
  background:var(--tutorial-surface);
  overflow:hidden;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content details[open]{border-color:color-mix(in srgb,var(--tutorial-accent) 40%,transparent)}
.ai-platform-tutorial .ai-platform-tutorial-article__content summary{
  position:relative;
  padding:15px 48px 15px 18px;
  color:var(--tutorial-text);
  font-weight:600;
  cursor:pointer;
  list-style:none;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content summary::-webkit-details-marker{display:none}
.ai-platform-tutorial .ai-platform-tutorial-article__content details summary,
.ai-platform-tutorial .ai-platform-tutorial-article__content details[open] summary{border:0 !important;outline:none;box-shadow:none !important;margin:0 !important;background:transparent !important}
.ai-platform-tutorial .ai-platform-tutorial-article__content summary::after{
  content:"+";
  position:absolute;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  color:var(--tutorial-accent);
  font-size:20px;
  font-weight:400;
  transition:transform .2s ease;
}
.ai-platform-tutorial .ai-platform-tutorial-article__content details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.ai-platform-tutorial .ai-platform-tutorial-article__content details > :not(summary){margin:0;padding:0 18px 16px;color:#c9d2e0}

/* Previous / next. */
.ai-platform-tutorial .ai-platform-tutorial-article__pager{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:56px;
}
.ai-platform-tutorial .ai-platform-tutorial-article__pager a{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:16px 18px;
  border-radius:14px;
  border:1px solid var(--tutorial-line);
  background:var(--tutorial-surface);
  color:var(--tutorial-text) !important;
  text-decoration:none !important;
  transition:border-color .2s ease,transform .2s ease;
}
.ai-platform-tutorial .ai-platform-tutorial-article__pager a:hover{border-color:rgba(57,215,255,.45);transform:translateY(-2px)}
.ai-platform-tutorial .ai-platform-tutorial-article__pager a.is-next{text-align:right;grid-column:2}
.ai-platform-tutorial .ai-platform-tutorial-article__pager small{color:var(--tutorial-muted);font-size:11px;letter-spacing:.06em;text-transform:uppercase}
.ai-platform-tutorial .ai-platform-tutorial-article__pager span{font-weight:700}

/* ---------- Desktop ≥1200px: table of contents beside the article ---------- */
@media (min-width:1200px){
  .ai-platform-tutorial .ai-platform-tutorial-article__layout.has-toc{
    display:grid;
    grid-template-columns:210px minmax(0,1fr);
    gap:56px;
    align-items:start;
  }
  .ai-platform-tutorial .ai-platform-tutorial-article__toc{
    position:sticky;
    top:24px;
    display:flex;
    flex-direction:column;
    gap:2px;
    padding:14px 0 14px 14px;
    border-left:1px solid var(--tutorial-line);
  }
  .ai-platform-tutorial .ai-platform-tutorial-article__toc strong{
    margin-bottom:8px;
    color:var(--tutorial-muted);
    font-size:10px;
    font-weight:800;
    letter-spacing:.16em;
    text-transform:uppercase;
  }
  .ai-platform-tutorial .ai-platform-tutorial-article__toc a{
    padding:6px 0;
    color:var(--tutorial-muted) !important;
    font-size:13px;
    line-height:1.35;
    text-decoration:none !important;
    transition:color .15s ease;
  }
  .ai-platform-tutorial .ai-platform-tutorial-article__toc a:hover,
  .ai-platform-tutorial .ai-platform-tutorial-article__toc a.is-active{color:var(--tutorial-text) !important}
  .ai-platform-tutorial .ai-platform-tutorial-article__toc a.is-active{box-shadow:-15px 0 0 -13px var(--tutorial-accent)}
}

/* ---------- Tab 521–1199px ---------- */
@media (min-width:521px) and (max-width:1199px){
  .ai-platform-tutorial .ai-platform-tutorial__main{width:min(100% - 48px,860px);padding:44px 0 72px}
  .ai-platform-tutorial .ai-platform-tutorial__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .ai-platform-tutorial .ai-platform-tutorial-article__content{max-width:none}
}

/* ---------- Phone ≤520px ---------- */
@media (max-width:520px){
  .ai-platform-tutorial .ai-platform-tutorial__main{width:calc(100% - 32px);padding:30px 0 56px}
  .ai-platform-tutorial .ai-platform-tutorial__intro{margin-bottom:26px}
  .ai-platform-tutorial .ai-platform-tutorial__intro h1{font-size:32px}
  .ai-platform-tutorial .ai-platform-tutorial__intro p{font-size:14px}
  .ai-platform-tutorial .ai-platform-tutorial__grid{grid-template-columns:1fr;gap:16px}
  .ai-platform-tutorial .ai-platform-tutorial-article__hero{padding:24px 20px;margin-bottom:28px;border-radius:16px}
  .ai-platform-tutorial .ai-platform-tutorial-article__hero h1{font-size:28px}
  .ai-platform-tutorial .ai-platform-tutorial-article__hero p{font-size:14px}
  .ai-platform-tutorial .ai-platform-tutorial-article__content{font-size:14.5px}
  .ai-platform-tutorial .ai-platform-tutorial-article__content h2{font-size:20px;margin-top:34px !important}
  .ai-platform-tutorial .ai-platform-tutorial-article__content figure{margin:20px -4px !important}
  .ai-platform-tutorial .ai-platform-tutorial-article__pager{grid-template-columns:1fr;gap:10px}
  .ai-platform-tutorial .ai-platform-tutorial-article__pager a.is-next{grid-column:auto}
  .ai-platform-tutorial .ai-platform-tutorial-article__pager > span:empty{display:none}
}

@media (prefers-reduced-motion:reduce){
  .ai-platform-tutorial .ai-platform-tutorial-card,
  .ai-platform-tutorial .ai-platform-tutorial-cover__shot{transition:none}
  .ai-platform-tutorial .ai-platform-tutorial-card:hover{transform:none}
  .ai-platform-tutorial .ai-platform-tutorial-card:hover .ai-platform-tutorial-cover__shot{transform:rotate(-4deg)}
}