/* AI图文实战训练营 · 报名落地页 */
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:#03080f;color:#dfeaf5;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
button{font-family:inherit}

/* 页面画布：手机全宽，桌面居中 */
.page{position:relative;width:100%;max-width:520px;margin:0 auto;background:#050b14;overflow:hidden;padding-bottom:8px}
@media(min-width:560px){
  .page{box-shadow:0 0 60px rgba(0,0,0,.8)}
  body{background:radial-gradient(120% 60% at 50% 0%,#0a1b2d,#03080f 60%)}
}

/* 顶部条 */
.appbar{
  position:sticky;top:0;z-index:60;height:52px;background:#fff;
  display:flex;align-items:center;justify-content:center;
}
.appbar__close{
  position:absolute;left:8px;top:50%;transform:translateY(-50%);
  width:40px;height:40px;border:0;background:transparent;color:#111;
  font-size:26px;line-height:1;font-weight:300;cursor:pointer;
}
.appbar__title{margin:0;font-size:16px;font-weight:600;color:#111;letter-spacing:.4px}

/* 首屏 */
.hero{position:relative;padding:54px 0 34px;overflow:hidden}
.hero__bg{
  position:absolute;inset:0;
  background:#071426 url("../img/hero.jpg") center/cover no-repeat;
  filter:saturate(1.15) contrast(1.05) brightness(.82);
  transform:scale(1.02);
}
.hero__veil{
  position:absolute;inset:0;
  background:
    radial-gradient(60% 52% at 50% 34%,rgba(45,190,255,.26),rgba(45,190,255,0) 72%),
    radial-gradient(95% 40% at 50% 100%,rgba(2,6,12,.92),rgba(2,6,12,0) 75%),
    linear-gradient(180deg,rgba(2,7,14,.45),rgba(2,7,14,.10) 38%,rgba(2,7,14,.5) 80%,rgba(3,8,15,.95));
}
.hero__grid{
  position:absolute;left:0;right:0;bottom:0;height:52%;
  background-image:
    linear-gradient(rgba(70,200,255,.16) 1px,transparent 1px),
    linear-gradient(90deg,rgba(70,200,255,.16) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 70%,#000 100%);
  mask-image:linear-gradient(180deg,transparent 0,#000 70%,#000 100%);
  opacity:.55;
}
.hero__inner{
  position:relative;z-index:3;padding:0 18px;
  display:flex;flex-direction:column;align-items:center;text-align:center;
}
.hero__eyebrow{
  display:flex;align-items:center;gap:10px;margin:0 0 20px;
  font-size:12px;font-weight:600;letter-spacing:2.5px;color:#8fe3ff;
  text-shadow:0 0 12px rgba(80,210,255,.55);
}
.hero__eyebrow i{display:block;width:26px;height:1px;background:linear-gradient(90deg,rgba(92,211,255,0),#5cd3ff)}
.hero__eyebrow i:last-child{background:linear-gradient(90deg,#5cd3ff,rgba(92,211,255,0))}
.hero__title{
  margin:0 0 26px;font-weight:900;line-height:.94;letter-spacing:.01em;
  transform:skewX(-8deg);
}
.hero__title span{
  display:block;font-size:clamp(46px,13.4vw,76px);
  background:linear-gradient(180deg,#ffffff 0%,#e8fdff 24%,#9beaff 58%,#37bcf7 80%,#0a6ba6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  -webkit-text-stroke:1.5px rgba(215,250,255,.75);
  filter:drop-shadow(0 2px 3px rgba(3,40,60,.9)) drop-shadow(0 0 14px rgba(77,217,255,.55)) drop-shadow(0 0 34px rgba(0,130,255,.45));
}
.ribbon{
  display:inline-block;padding:10px 26px;border-radius:4px;
  font-size:15px;font-weight:700;color:#04222f;letter-spacing:.5px;
  background:linear-gradient(100deg,#a9efff,#5cd3ff 55%,#2fb6ec);
  clip-path:polygon(6% 0,100% 0,94% 100%,0 100%);
  box-shadow:0 8px 22px rgba(0,170,240,.35);
}
.hero__note{margin:18px 0 0;font-size:13.5px;line-height:1.65;color:rgba(230,246,255,.92);text-shadow:0 1px 6px rgba(0,0,0,.7)}
.hero__note--dim{margin-top:7px;font-size:12.5px;color:rgba(202,225,242,.7)}

/* 报名卡 */
.card{
  position:relative;z-index:5;margin:-26px 12px 0;padding:18px 16px 20px;
  background:#fff;border-radius:18px;
  box-shadow:0 18px 40px rgba(0,10,25,.55);
}
.form{margin:0}
.field{padding:0 0 18px}
.field__head{display:flex;align-items:center;gap:7px;margin:0 0 10px}
.field__ico{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;background:linear-gradient(140deg,#7b6cf6,#3b9df8)}
.field__ico svg{width:13px;height:13px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.field__label{font-size:14.5px;font-weight:600;color:#22303f}

.opts{display:grid;gap:10px}
.opts--2{grid-template-columns:1fr 1fr}
.opts--3{grid-template-columns:repeat(3,1fr);gap:8px}
.opt{
  position:relative;display:flex;align-items:center;justify-content:center;gap:7px;
  min-height:52px;padding:10px 8px;cursor:pointer;
  border:1px solid #e3e9f1;border-radius:11px;background:#fbfcfe;
  color:#1d2836;font-size:15px;font-weight:600;transition:.16s;
}
.opt:active{transform:scale(.985)}
.opt__ico{display:inline-flex;width:18px;height:18px;color:#2f7ff0}
.opt__ico svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.opt__txt{display:flex;flex-direction:column;align-items:flex-start;line-height:1.25}
.opt__t{font-size:15px;white-space:nowrap}
.opt__s{font-size:11.5px;font-weight:400;color:#8a97a6;margin-top:2px;white-space:nowrap}
.opt--muted .opt__ico{color:#e0663c}
.opt--3 .opt__t{font-size:13.5px}
.opt.is-on{
  border-color:#2f7ff0;background:#edf5ff;
  box-shadow:0 0 0 2px rgba(47,127,240,.14);
}
.opt.is-on .opt__ico{color:#2f7ff0}
.opt.is-on::after{
  content:"✓";position:absolute;top:4px;right:7px;
  font-size:11px;font-weight:700;color:#2f7ff0;line-height:1;
}

.phone{display:flex;align-items:center;height:52px;padding:0 14px;border:1px solid #e3e9f1;border-radius:11px;background:#fbfcfe}
.phone:focus-within{border-color:#2f7ff0;box-shadow:0 0 0 2px rgba(47,127,240,.14);background:#fff}
.phone__label{font-size:15px;font-weight:600;color:#1d2836;padding-right:12px;margin-right:12px;border-right:1px solid #e6ebf2;white-space:nowrap}
.phone__input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:15px;color:#12202e;letter-spacing:.5px}
.phone__input::placeholder{color:#a6b1be;font-size:13.5px;letter-spacing:0}
.codesend{flex:0 0 auto;margin-left:8px;padding:0 13px;height:34px;border:1px solid #2f7ff0;border-radius:9px;background:#fff;color:#2f7ff0;font-size:13px;font-weight:600;white-space:nowrap;cursor:pointer;-webkit-tap-highlight-color:transparent}
.codesend:active{background:#f2f7ff}
.codesend[disabled]{border-color:#d4dbe5;color:#9aa7b6;background:#f7f9fc;cursor:default}

.err{margin:8px 2px 0;font-size:12.5px;color:#e63946}
.hint{margin:8px 2px 0;font-size:11.5px;color:#9aa6b4}
.field--err .field__label{color:#e63946}
.field--err .opts{outline:1px dashed #f0a2a8;outline-offset:3px;border-radius:14px}
.field--err .opts--3{outline-offset:3px}

.submit{
  width:100%;height:52px;margin-top:4px;border:0;border-radius:999px;cursor:pointer;
  color:#fff;font-size:17.5px;font-weight:700;letter-spacing:1px;
  background:linear-gradient(180deg,#ff5454 0%,#f23a44 46%,#dd2130 100%);
  box-shadow:0 10px 22px rgba(221,33,48,.34),inset 0 1px 0 rgba(255,255,255,.28);
  transition:.16s;
}
.submit:active{transform:translateY(1px) scale(.995);box-shadow:0 6px 14px rgba(221,33,48,.3)}
.submit[disabled]{opacity:.65;cursor:default}
.form__tip{margin:12px 0 0;text-align:center;font-size:11.5px;line-height:1.6;color:#98a4b2}

.done{padding:26px 10px 30px;text-align:center}
.done__ico{width:58px;height:58px;margin:0 auto 14px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:linear-gradient(140deg,#28c76f,#12a355);box-shadow:0 8px 20px rgba(18,163,85,.3)}
.done__ico svg{width:28px;height:28px;fill:none;stroke:#fff;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.done__t{margin:0 0 8px;font-size:19px;color:#12202e}
.done__s{margin:0;font-size:13.5px;line-height:1.75;color:#6c7a8a}
.done__ph{display:inline-block;margin:14px 0 0;padding:7px 16px;border-radius:999px;background:#f2f6fb;color:#54636f;font-size:12.5px;letter-spacing:.5px}

/* 内容方向 */
.sec{padding:34px 20px 0}
.sec--topics{padding-top:30px}
.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;text-align:center}
.topic__ring{
  width:76px;height:76px;margin:0 auto 10px;border-radius:50%;padding:2px;
  background:conic-gradient(from 200deg,#2a7ef0,#63e4ff,#1d4fd8,#2a7ef0);
  box-shadow:0 0 18px rgba(60,190,255,.35);
}
.topic__in{
  display:flex;align-items:center;justify-content:center;width:100%;height:100%;border-radius:50%;
  background:radial-gradient(80% 80% at 50% 20%,#12263c,#070f1a);
}
.topic__in svg{width:30px;height:30px;fill:none;stroke:#7fe0ff;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.topic__t{margin:0;font-size:13.5px;color:#cfe4f6;letter-spacing:.5px}

/* 横幅标题 */
.banner{display:flex;justify-content:center;margin:0 0 18px}
.banner h3{
  margin:0;padding:9px 34px;font-size:17px;font-weight:700;letter-spacing:3px;color:#eafcff;
  background:linear-gradient(90deg,#0a4d78,#0d84c0 50%,#0a4d78);
  clip-path:polygon(7% 0,100% 0,93% 100%,0 100%);
  box-shadow:inset 0 0 0 1px rgba(140,240,255,.45);
  text-shadow:0 0 10px rgba(110,225,255,.6);
}

.list{list-style:none;margin:0;padding:0}
.list li{position:relative;padding:12px 2px 12px 28px;font-size:14.5px;line-height:1.5;color:#cfe0f0;border-bottom:1px solid rgba(120,200,255,.10)}
.list li:last-child{border-bottom:0}
.list li::before{
  content:"";position:absolute;left:6px;top:19px;width:8px;height:8px;
  background:#3ec9ff;transform:rotate(45deg);border-radius:2px;
  box-shadow:0 0 10px rgba(62,201,255,.9);
}

/* 详情（课程表） */
.sec--detail{padding-bottom:6px}
.detail__sub{margin:-4px 0 14px;text-align:center;font-size:12.5px;color:rgba(190,215,235,.65);letter-spacing:1px}
.detail__fig{margin:0;border-radius:14px;overflow:hidden;border:1px solid rgba(110,210,255,.22);box-shadow:0 16px 34px rgba(0,12,26,.55)}
.detail__fig img{width:100%;height:auto}

/* 页脚 */
.foot{padding:30px 20px 84px;text-align:center}
.foot p{margin:0 0 6px;font-size:12px;color:rgba(178,205,226,.55)}
.foot__dim{font-size:11px;color:rgba(178,205,226,.38)}

/* 底部固定条 */
.sticky{
  position:fixed;left:0;right:0;bottom:0;z-index:70;max-width:520px;margin:0 auto;
  display:flex;align-items:center;gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,14,24,.94);border-top:1px solid rgba(110,200,255,.16);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transform:translateY(110%);transition:transform .25s;
}
.sticky.is-show{transform:translateY(0)}
.sticky__info{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.sticky__t{font-size:13.5px;font-weight:600;color:#e6f3ff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky__s{font-size:11px;color:#7fa6c4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky__btn{
  margin-left:auto;flex:none;height:42px;padding:0 26px;border:0;border-radius:999px;cursor:pointer;
  font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(180deg,#ff5454,#dd2130);
  box-shadow:0 8px 18px rgba(221,33,48,.35);
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}