:root {
  --navy: #06112b;
  --blue: #176cff;
  --orange: #ff6a00;
  --muted: #9db0d3;
  --line: rgba(255,255,255,.12);
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0; background: var(--navy); color: #fff;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.7; overflow-x: clip;
}
body.locked { overflow: hidden; height: 100svh; }
img { display: block; max-width: 100%; }
a, button { color: inherit; font: inherit; cursor: pointer; }
button { border: 0; background: none; }
a { text-decoration: none; }
h1,h2,h3 {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  letter-spacing: -.035em;
}

.progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 80; background: linear-gradient(90deg, var(--blue), var(--orange)); }
.hud {
  position: fixed; inset: 0 0 auto; z-index: 70;
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 22px; background: linear-gradient(180deg, rgba(6,17,43,.92), transparent);
}
.brand { display: flex; gap: 10px; align-items: center; font-size: 12px; letter-spacing: .18em; font-weight: 700; }
.brand i { width: 34px; height: 34px; border-radius: 50%; background: var(--orange); display: grid; place-items: center; font-style: normal; letter-spacing: 0; }
.hud nav { display: flex; gap: 16px; font-size: 12px; letter-spacing: .12em; color: var(--muted); }
.icon { width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; }
.icon svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; }

.gate {
  position: fixed; inset: 0; z-index: 100;
  background: linear-gradient(180deg, rgba(6,17,43,.28), rgba(6,17,43,.9)), url("../assets/web/hero.webp") center 42% / cover no-repeat;
  display: grid; place-items: center; text-align: center; transition: .8s;
}
.gate.out { opacity: 0; visibility: hidden; }
.gate .k { letter-spacing: .36em; color: #9abaff; font-size: 11px; }
.gate h1 { font-size: clamp(34px, 6vw, 64px); margin: 12px 0; line-height: 1.05; }
.gate h1 em { color: var(--orange); font-style: normal; }
.enter {
  border: 1px solid var(--orange); padding: 13px 26px; letter-spacing: .2em;
  font-size: 12px; font-weight: 700; animation: breathe 2.4s ease-in-out infinite;
}
.hint { margin-top: 18px; font-size: 12px; color: #b7c6e4; letter-spacing: .2em; animation: floaty 2.2s ease-in-out infinite; }

.hero {
  min-height: 100svh; display: grid; align-items: end; position: relative;
  isolation: isolate; overflow: clip;
}
.hero img, .hero .shade { position: absolute; inset: 0; }
.hero img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 58%; z-index: -2; animation: ken 18s ease-in-out infinite alternate; }
.hero .shade { z-index: -1; background: linear-gradient(180deg, rgba(6,17,43,.15) 10%, rgba(6,17,43,.94) 92%); }
.wrap { width: min(var(--max), 100%); margin: 0 auto; padding: 130px 24px 80px; }
.k { font-size: 12px; letter-spacing: .2em; color: #9abaff; font-weight: 700; }
.hero h1 { font-size: clamp(40px, 7vw, 88px); line-height: .92; margin: 10px 0 14px; }
.hero h1 strong { color: var(--orange); display: block; }
.lead { max-width: 680px; font-size: clamp(16px, 2vw, 21px); color: #dce6ff; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.pills span { border: 1px solid rgba(23,108,255,.45); background: rgba(6,17,43,.65); padding: 8px 12px; font-size: 12px; border-radius: 999px; }
.scroll-guide {
  margin-top: 36px; color: var(--muted); font-size: 12px; letter-spacing: .28em;
  animation: floaty 2.2s ease-in-out infinite;
}

.sec { padding: 92px 24px; }
.inner { width: min(var(--max), 100%); margin: 0 auto; }
h2 { font-size: clamp(30px, 4.6vw, 56px); line-height: 1.12; margin: 8px 0 16px; }
h2 em { color: var(--orange); font-style: normal; }
.sub { max-width: 720px; color: var(--muted); margin: 0 0 32px; }
.chapter {
  display: inline-flex; margin: 0 0 10px; padding: 7px 12px;
  border: 1px solid rgba(255,106,0,.5); border-radius: 999px;
  color: #ffd5b5; background: rgba(255,106,0,.08);
  font-size: 14px; font-weight: 800; letter-spacing: .08em;
}
.context { max-width: 720px; margin: -18px 0 32px; color: #dce6ff; font-size: 14px; }

.guide {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 28px;
}
.guide a {
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; font-size: 12px; color: #cfe0ff;
}
.guide a:hover { border-color: var(--orange); color: #fff; }

.three, .four, .days { display: grid; gap: 14px; }
.three { grid-template-columns: repeat(3, 1fr); }
.four { grid-template-columns: repeat(4, 1fr); }
.days { grid-template-columns: repeat(3, 1fr); }
.card, .day, .why, .speak, .cls, .official-registration {
  border: 1px solid #1b3268; background: linear-gradient(160deg, #0b1a3a, #071226);
  border-radius: 18px; padding: 22px;
}
.day.free { border-color: rgba(23,108,255,.5); }
.day.work { border-color: rgba(255,106,0,.45); }
.no { color: var(--orange); font-size: 12px; letter-spacing: .16em; font-weight: 700; }
.day h3, .why h3, .card h3 { margin: 10px 0 8px; font-size: 22px; }
.day ul { margin: 12px 0 0; padding-left: 18px; color: #c9d6ee; }
.why p, .card p, .speak p, .cls p { margin: 0; color: #c5d2ea; }

.kv { border-radius: 20px; overflow: hidden; border: 1px solid var(--line); margin-top: 28px; }
.kv img { width: 100%; }
.poster-note { padding: 12px 16px; color: var(--muted); font-size: 14px; text-align: center; }

.ggrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.speak { text-align: center; padding: 18px 14px 20px; }
.speak img {
  width: 120px; height: 120px; object-fit: cover; object-position: center 18%;
  border-radius: 50%; margin: 0 auto 12px; border: 3px solid rgba(255,106,0,.55);
}
.speak h3 { margin: 0 0 4px; font-size: 18px; }
.speak .role { color: #9abaff; font-size: 12px; min-height: 36px; }
.speak .talk { margin-top: 8px; font-size: 13px; color: #e8eefc; }

.q8 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 22px; }
.q8 article { padding: 16px; border-left: 3px solid var(--orange); background: rgba(0,0,0,.2); }
.q8 b { color: var(--orange); }
.q8 h3 { margin: 6px 0 4px; font-size: 16px; }
.q8 p { margin: 0; color: var(--muted); font-size: 13px; }
.clist { display: grid; gap: 8px; }
.cls { display: grid; grid-template-columns: 88px 1fr auto; gap: 12px; align-items: center; }
.cls time { color: var(--orange); font-size: 13px; }
.cls small { color: var(--muted); }

.contact { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; align-items: center; }
.official-registration { text-align: center; }
.official-registration > img {
  width: min(100%, 900px); height: auto; margin: 10px auto 18px; border-radius: 16px;
  background: #06112b;
}
.official-registration h3 { margin: 0 0 6px; }
.registration-links { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.registration-link {
  display: flex; align-items: center; justify-content: center; min-height: 48px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 12px; color: #fff; font-size: 14px; font-weight: 800;
  background: rgba(255,255,255,.04);
}
.forum-link { border-color: rgba(23,108,255,.7); }
.workshop-link { border-color: rgba(255,106,0,.7); }
.wechat-article-link {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px;
  min-height: 64px; margin-top: 12px; padding: 12px 14px; text-align: left;
  color: #fff; border: 1px solid rgba(7,193,96,.7); border-radius: 14px;
  background: linear-gradient(135deg, rgba(7,193,96,.2), rgba(7,193,96,.05));
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.wechat-article-link:hover {
  transform: translateY(-2px); border-color: #07c160;
  background: linear-gradient(135deg, rgba(7,193,96,.28), rgba(7,193,96,.08));
}
.wechat-article-link:focus-visible { outline: 3px solid rgba(7,193,96,.42); outline-offset: 3px; }
.wechat-badge {
  padding: 5px 8px; color: #06112b; background: #07c160; border-radius: 999px;
  font-size: 12px; font-weight: 900; letter-spacing: .04em;
}
.wechat-copy { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.wechat-copy strong { font-size: 15px; line-height: 1.35; }
.wechat-copy small { color: rgba(255,255,255,.68); font-size: 13px; line-height: 1.35; }
.wechat-arrow { color: #07c160; font-size: 24px; font-weight: 800; line-height: 1; }
.phone { margin-top: 10px; font-size: 20px; }
.phone a { color: var(--orange); border-bottom: 1px solid var(--orange); }
.phone-link { margin: 16px 0 0; font-size: 16px; }
.org { color: var(--muted); font-size: 13px; line-height: 1.9; }

.dock {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  display: flex; gap: 8px; padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: rgba(6,17,43,.94); border-top: 1px solid var(--line);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 18px; border-radius: 999px; font-weight: 800; font-size: 14px;
}
.btn.main { background: var(--orange); color: #1a0b00; }
.btn.secondary { border: 1px solid var(--blue); }
.dock .btn { flex: 1; }
.btn.main { animation: breathe 2.6s ease-in-out infinite; }

.reveal { opacity: 0; transform: translateY(18px); transition: .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,106,0,.0); transform: scale(1); }
  50% { box-shadow: 0 0 0 10px rgba(255,106,0,.08); transform: scale(1.02); }
}
@keyframes floaty {
  0%, 100% { transform: translateY(0); opacity: .7; }
  50% { transform: translateY(6px); opacity: 1; }
}
@keyframes ken {
  from { transform: scale(1); }
  to { transform: scale(1.06); }
}

@media (max-width: 860px) {
  .hud nav { display: none; }
  .three, .four, .days, .ggrid, .q8, .contact { grid-template-columns: 1fr; }
  .ggrid, .q8 { grid-template-columns: 1fr 1fr; }
  .cls { grid-template-columns: 1fr; }
  .sec { padding: 72px 18px 110px; }
}

@media (max-width: 560px) {
  .wrap { padding: 118px 18px 92px; }
  .hero h1 { font-size: clamp(38px, 13vw, 54px); }
  .lead, .sub, .context, .day li, .why p, .card p, .cls p, .official-registration p { font-size: 15px; }
  .ggrid, .q8 { grid-template-columns: 1fr; }
  .registration-links { grid-template-columns: 1fr; }
  .speak .role, .speak .talk, .q8 p, .cls time, .org { font-size: 14px; }
  .speak .role { min-height: auto; }
  .guide a, .pills span { font-size: 14px; }
  .cls { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}