:root{
  --cream:#fff8e6;
  --paper:#fffdf8;
  --ink:#20242e;
  --muted:#7b7568;
  --line:#f0dfb9;
  --blue:#1f6fd0;
  --blue-deep:#0d4fa0;
  --blue-soft:#eaf3ff;
  --yellow:#ffc928;
  --yellow-soft:#fff4c7;
  --orange:#ff8a1e;
  --green:#147a58;
  --green-soft:#e7f4ee;
  --red:#b53b35;
  --red-soft:#fbe9e6;
  --shadow:0 18px 40px rgba(112,78,20,.10);
  --shadow-sm:0 6px 18px rgba(112,78,20,.07);
  --sans:"Microsoft YaHei","PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --mono:"Cascadia Mono","SFMono-Regular",Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);font-family:var(--sans);
  background:
    radial-gradient(900px 500px at 10% -10%,#fffdf4 0,transparent 60%),
    radial-gradient(700px 400px at 100% 5%,#eaf3ff 0,transparent 55%),
    var(--cream);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(31,111,208,.10) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(to bottom,#000,transparent 80%);
}
a{color:inherit}
.site{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:20px 22px 48px}
button{font-family:inherit}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid rgba(31,111,208,.35);outline-offset:2px}

/* top */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:4px 0 24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-mark{
  width:42px;height:42px;border-radius:14px;background:var(--orange);color:#fff;
  display:grid;place-items:center;font:800 13px/1 var(--mono);letter-spacing:-.06em;
  box-shadow:0 5px 0 #d96b0d;
}
.brand-copy b{display:block;font-size:14px;letter-spacing:.03em}
.brand-copy small{display:block;font-size:8px;color:var(--muted);font:700 8px/1.4 var(--mono);letter-spacing:.13em;margin-top:3px}
.teacher-badge{
  display:inline-flex;align-items:center;gap:7px;background:#fff;border:1.5px solid #ffd35e;
  border-radius:999px;padding:8px 13px;font-size:11.5px;font-weight:800;color:#7a5b1b;box-shadow:0 4px 0 #ffe3a3;
}
.teacher-dot{font-size:14px}

/* hero */
.hero{position:relative;display:grid;grid-template-columns:1fr 310px;gap:32px;align-items:center;padding:14px 0 26px}
.hero-copy{position:relative;z-index:1}
.kicker{font:800 9px/1.4 var(--mono);letter-spacing:.18em;color:var(--blue);margin:0 0 10px;text-transform:uppercase}
.hero h1{
  font-size:clamp(58px,8.4vw,92px);line-height:.95;letter-spacing:-.06em;margin:0;
  color:var(--blue);font-weight:900;
  text-shadow:4px 4px 0 #ffe27c,8px 8px 0 rgba(31,111,208,.10);
}
.hero-pill{
  display:inline-flex;align-items:center;justify-content:center;margin-top:16px;
  background:var(--blue);color:#fff;border-radius:999px;padding:8px 18px;
  font-size:12px;font-weight:800;letter-spacing:.02em;box-shadow:0 5px 0 #0b4c9e;
  transform:rotate(-1deg);
}
.hero-date{margin:16px 0 0;color:#5d5544;font-size:12.5px;font-weight:700;letter-spacing:.02em}
.hero-card{
  position:relative;z-index:1;background:#fff;border:2px solid #ffe1a0;border-radius:22px;
  padding:18px 18px 16px;box-shadow:var(--shadow);
}
.hero-card::after{content:"";position:absolute;right:-9px;top:-9px;width:24px;height:24px;background:var(--orange);border-radius:50%;border:4px solid var(--cream)}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:10.5px;color:var(--muted);font-weight:700}
.hero-card-top b{color:var(--blue);font-size:12px}
.hero-mini{display:flex;flex-direction:column;gap:3px;margin:13px 0 12px;padding:12px 13px;border-radius:13px;background:var(--yellow-soft);border:1px dashed #e8c44c}
.hero-mini span{font-size:10px;color:#8a6a1d;font-weight:700}
.hero-mini strong{font-size:17px;color:#4b3c13;letter-spacing:-.02em}
.hero-card-note{font-size:10px;line-height:1.6;color:var(--muted)}
.doodle{position:absolute;z-index:0;user-select:none;line-height:1}
.star-a{left:-16px;top:8px;color:var(--orange);font-size:28px;transform:rotate(-12deg)}
.star-b{right:325px;bottom:4px;color:var(--yellow);font-size:22px;transform:rotate(12deg)}
.planet{right:8px;top:0;font-size:30px;transform:rotate(-8deg);opacity:.9}

/* panels */
.panel{background:rgba(255,253,248,.94);border:1.5px solid #f1e1bd;border-radius:22px;padding:22px;box-shadow:var(--shadow-sm)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.eyebrow{font:800 8.5px/1.3 var(--mono);letter-spacing:.14em;color:var(--blue);margin:0 0 6px;text-transform:uppercase}
.section-head h2{margin:0;font-size:22px;letter-spacing:-.03em}
.section-note{margin:0;color:var(--muted);font-size:10.5px;line-height:1.6}
.slots-panel{margin-bottom:16px}
.slot-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.slot-loading{grid-column:1/-1;padding:24px;text-align:center;color:var(--muted);font-size:12px}
.slot-card{
  position:relative;display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:4px 10px;
  padding:14px 15px;border:1.5px solid #efe1c3;border-radius:15px;background:#fff;
  cursor:pointer;transition:transform .16s ease,border-color .16s ease,background .16s ease,box-shadow .16s ease;
}
.slot-card:hover{transform:translateY(-2px);border-color:#c7b27f;box-shadow:var(--shadow-sm)}
.slot-card input{position:absolute;opacity:0;pointer-events:none}
.slot-card.selected{border-color:var(--blue);background:linear-gradient(180deg,#f3f8ff,#fff);box-shadow:0 0 0 3px rgba(31,111,208,.10),var(--shadow-sm)}
.slot-card.selected::after{content:"";position:absolute;right:10px;bottom:10px;width:20px;height:20px;border-radius:50%;background:var(--blue);box-shadow:inset 0 0 0 3px #fff;border:2px solid var(--blue)}
.slot-date{font-size:19px;font-weight:900;letter-spacing:-.03em;display:flex;align-items:baseline;gap:6px}
.slot-date em{font-style:normal;font-size:9px;font-weight:800;color:var(--blue);background:var(--blue-soft);border:1px solid #d3e6ff;border-radius:5px;padding:3px 5px;letter-spacing:.03em}
.slot-period{grid-row:2;font-size:11px;font-weight:800;color:#8a6a1d}
.slot-time{grid-column:2;grid-row:1;font:800 13px/1.2 var(--mono);color:var(--blue);letter-spacing:-.02em;align-self:center}
.slot-status{grid-column:2;grid-row:2;justify-self:end;font:800 8.5px/1 var(--mono);color:var(--green);background:var(--green-soft);border:1px solid #cae6da;border-radius:999px;padding:5px 7px;letter-spacing:.03em}
.slot-card.closed{opacity:.62;background:#faf7ef;cursor:not-allowed;filter:saturate(.5)}
.slot-card.closed:hover{transform:none;box-shadow:none;border-color:#efe1c3}
.slot-card.closed .slot-status{color:var(--muted);background:#f0ece2;border-color:#e4dccb}
.slot-card.closed::after{display:none}
.slots-foot{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:11px;color:var(--muted);font-size:9.5px}
.tiny-pill{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:999px;background:var(--yellow-soft);border:1px solid #efd88e;color:#7a5b1b;font:800 8px/1 var(--mono);letter-spacing:.04em}

/* form */
.booking-panel{margin-bottom:16px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:flex;flex-direction:column;gap:6px}
.field > span{font-size:11px;font-weight:800;color:#4b463c}
.field > span i{color:var(--orange);font-style:normal}
.field input,.field select{
  width:100%;height:44px;border:1.5px solid #e9dcc0;border-radius:11px;background:#fff;
  padding:0 12px;color:var(--ink);font-size:13px;font-family:inherit;font-weight:600;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field input::placeholder{color:#b6ae9d;font-weight:500}
.field input:focus,.field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,111,208,.10)}
.selected-slot{display:flex;align-items:center;gap:9px;margin:12px 0 0;padding:11px 12px;border-radius:12px;background:#fbf7ec;border:1px dashed #e3d1a8}
.selected-icon{font-size:16px}
.selected-slot div{min-width:0;flex:1}
.selected-slot small{display:block;color:var(--muted);font-size:8.5px;font-weight:700;letter-spacing:.05em;margin-bottom:2px}
.selected-slot b{display:block;font-size:11.5px;color:#4b463c;line-height:1.4}
.selected-slot b.empty{color:#a49a86;font-weight:600}
.text-btn{border:0;background:none;color:var(--blue);font-size:10.5px;font-weight:800;cursor:pointer;padding:4px 2px;white-space:nowrap}
.form-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:14px}
.submit-btn{
  border:0;border-radius:13px;background:var(--yellow);color:#3f3212;
  min-height:46px;padding:0 24px;font-size:14px;font-weight:900;letter-spacing:.02em;
  box-shadow:0 5px 0 #d9a300;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.submit-btn:hover{transform:translateY(-1px);background:#ffd34a}
.submit-btn:active{transform:translateY(2px);box-shadow:0 2px 0 #d9a300}
.submit-btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:0 4px 0 #d9a300}
.submit-btn.outline{background:#fff;border:1.5px solid #e3d1a8;box-shadow:0 4px 0 #f0e3c9;color:#5b4b25;font-size:12px;min-height:40px;padding:0 18px}
.form-tip{margin:0;font-size:9.5px;line-height:1.55;color:var(--muted);max-width:310px}
.form-msg{min-height:18px;margin:8px 0 0;font-size:11px;font-weight:700;color:var(--red)}
.success-card{text-align:center;padding:10px 8px 2px}
.success-icon{font-size:40px;line-height:1;margin-bottom:8px}
.success-card h3{margin:0 0 10px;font-size:26px;color:var(--blue);letter-spacing:-.04em}
.success-line{margin:0;font-size:15px;color:#4b463c}
.success-line b{font-size:18px;color:var(--ink)}
.success-slot{display:inline-block;margin:10px 0 4px;padding:7px 12px;border-radius:999px;background:var(--yellow-soft);border:1px solid #efd88e;font-size:11.5px;font-weight:800;color:#6b531a}
.success-note{margin:8px auto 14px;max-width:420px;font-size:10.5px;line-height:1.7;color:var(--muted)}

/* topics */
.topics{display:grid;grid-template-columns:1fr 1.2fr;gap:20px;align-items:center;margin:18px 0;padding:22px 24px;background:var(--blue);border-radius:22px;color:#fff;box-shadow:0 8px 0 #0b4c9e}
.topics .eyebrow{color:#ffe27c;margin-bottom:5px}
.topics h2{margin:0 0 4px;font-size:24px;letter-spacing:-.03em}
.topics-copy p:last-child{margin:0;font-size:10px;line-height:1.6;color:#d8e8ff}
.topic-chips{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.topic-chips span{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.38);font-size:10.5px;font-weight:800;color:#fff}

/* guide */
.guide-panel{margin-bottom:16px}
.guide-grid{display:flex;flex-direction:column;gap:14px}
.guide-step{display:grid;grid-template-columns:34px 1fr;gap:0 9px;margin:0;padding:12px;border:1.5px solid #f0e1c2;border-radius:16px;background:#fff}
.step-no{grid-row:1/3;width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font:800 10px/1 var(--mono);box-shadow:0 3px 0 #0b4c9e}
.guide-step figcaption{padding:1px 2px 8px}
.guide-step h3{margin:0 0 3px;font-size:13px;letter-spacing:-.01em}
.guide-step p{margin:0;color:var(--muted);font-size:10px;line-height:1.6}
.guide-step img{grid-column:2;width:100%;height:auto;border-radius:10px;border:1px solid #e8dbc0;background:#f7f4ec;display:block}
a.guide-img{display:block;grid-column:2}
.guide-note{margin-top:11px;padding:10px 12px;border-radius:10px;background:#fff7df;border:1px dashed #e8c44c;color:#6b531a;font-size:9.5px;line-height:1.6}
.guide-note b{color:#4b3c13}

/* notes / footer */
.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0 24px}
.notes > div{display:flex;gap:9px;align-items:flex-start;padding:12px;border:1px solid #f0e1c2;border-radius:13px;background:rgba(255,253,248,.72)}
.notes span{font-size:16px;line-height:1}
.notes p{margin:0;font-size:9.5px;line-height:1.55;color:var(--muted)}
.notes b{display:block;color:var(--ink);font-size:10.5px;margin-bottom:1px}
.footer{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding-top:15px;border-top:1px solid #e9d9b8;color:#968a74;font-size:9px;letter-spacing:.02em}
.footer b{color:#6b5c3f}

@media(max-width:860px){
  .hero{grid-template-columns:1fr;gap:18px;padding-top:4px}
  .hero-card{max-width:420px}
  .star-b{right:8px;bottom:auto;top:150px}
  .topics{grid-template-columns:1fr;gap:12px}
  .topic-chips{justify-content:flex-start}
  .notes{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .site{padding:14px 14px 36px}
  .topbar{padding-bottom:16px}
  .brand-copy b{font-size:12px}
  .brand-mark{width:36px;height:36px;border-radius:12px;font-size:11px}
  .teacher-badge{font-size:9.5px;padding:7px 10px}
  .hero h1{font-size:58px;text-shadow:3px 3px 0 #ffe27c,6px 6px 0 rgba(31,111,208,.10)}
  .hero-pill{font-size:10.5px;padding:7px 14px}
  .hero-date{font-size:11px}
  .hero-card{padding:14px;border-radius:18px}
  .panel{padding:15px;border-radius:17px}
  .section-head h2{font-size:19px}
  .section-note{font-size:9.5px}
  .slot-grid{grid-template-columns:1fr}
  .slot-card{padding:12px 13px}
  .slot-date{font-size:18px}
  .form-grid{grid-template-columns:1fr}
  .selected-slot{align-items:flex-start}
  .form-actions{display:block}
  .submit-btn{width:100%}
  .form-tip{margin-top:8px;max-width:none}
  .topics{padding:17px;border-radius:17px}
  .topics h2{font-size:21px}
  .guide-step{padding:9px;grid-template-columns:28px 1fr}
  .step-no{width:26px;height:26px;font-size:9px}
  .guide-step h3{font-size:12px}
  .guide-step p{font-size:9.5px}
  .notes{grid-template-columns:1fr}
  .footer{display:block}
}

.custom-time-field{margin-top:11px}
.custom-time-field > span em{font-style:normal;color:var(--muted);font-weight:600}
.custom-time-field > small{font-size:9px;color:var(--muted);line-height:1.55}
.custom-time-field input{border-style:dashed;background:#fffdf7}

.form-grid.single{grid-template-columns:1fr}