:root {
  --gold: #f8d57a;
  --gold-soft: #fff0bb;
  --gold-deep: #9b6718;
  --red: #e64125;
  --green: #4ac268;
  --ink: #fffaf0;
  --muted: #d6c5a0;
  --line: rgba(248, 213, 122, 0.58);
  --panel: rgba(7, 7, 7, 0.78);
  --error: #ffdf78;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% 4%, rgba(255, 224, 137, 0.18), transparent 22%),
    radial-gradient(circle at 12% 18%, rgba(30, 117, 70, 0.2), transparent 24%),
    radial-gradient(circle at 88% 18%, rgba(202, 40, 24, 0.22), transparent 24%),
    linear-gradient(180deg, #090703 0%, #141009 42%, #030303 100%);
}

button,
input {
  font: inherit;
}

.page {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: start center;
  padding:
    max(16px, calc(env(safe-area-inset-top, 0px) + 8px))
    0
    max(32px, calc(env(safe-area-inset-bottom, 0px) + 24px));
}

.poster {
  position: relative;
  width: min(100vw, 793px);
  overflow: hidden;
  padding: 18px 18px 28px;
  border-inline: 1px solid rgba(248, 213, 122, 0.18);
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.42) 0%, rgba(0, 0, 0, 0.68) 48%, rgba(0, 0, 0, 0.38) 100%),
    image-set(url("./assets/visual-backdrop.webp?v=20260707-7") type("image/webp")) top center / 100% auto no-repeat,
    linear-gradient(145deg, rgba(255, 215, 115, 0.13), transparent 28%),
    linear-gradient(215deg, rgba(203, 24, 17, 0.18), transparent 26%),
    linear-gradient(180deg, rgba(5, 5, 5, 0.96), rgba(9, 8, 5, 0.98));
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.65);
}

.poster::before,
.poster::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.poster::before {
  inset: 0 0 auto;
  height: 300px;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.22), transparent 35%),
    repeating-linear-gradient(102deg, transparent 0 22px, rgba(255, 227, 150, 0.1) 23px 25px),
    linear-gradient(100deg, transparent 0 17%, rgba(11, 163, 81, 0.34) 18% 23%, transparent 29% 100%),
    linear-gradient(78deg, transparent 0 67%, rgba(217, 43, 24, 0.38) 68% 75%, transparent 82% 100%);
  opacity: 0.8;
}

.poster::after {
  left: -12%;
  right: -12%;
  bottom: -42px;
  height: 230px;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(37, 124, 178, 0.42), transparent 52%),
    linear-gradient(180deg, transparent, rgba(16, 71, 104, 0.8));
}

.hero,
.signup-form,
.benefits-section,
.event-footer,
.success-panel {
  position: relative;
  z-index: 1;
}

.hero {
  min-height: 292px;
  display: grid;
  align-content: center;
  gap: 10px;
  padding: 14px 4px 18px;
  text-align: center;
}

.eyebrow {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  padding: 4px 18px;
  border-block: 1px solid rgba(248, 213, 122, 0.72);
  color: var(--gold-soft);
  font-size: clamp(14px, 3.8vw, 25px);
  font-weight: 700;
  line-height: 1.35;
}

.hero h1 {
  margin: 0;
  color: var(--gold);
  font-weight: 1000;
  line-height: 0.95;
  text-shadow: 0 3px 0 rgba(84, 52, 0, 0.88), 0 0 22px rgba(255, 219, 126, 0.32);
}

.hero h1 span,
.hero h1 strong {
  display: block;
}

.hero h1 span {
  font-size: clamp(45px, 14vw, 108px);
}

.hero h1 strong {
  color: #f6f6f6;
  font-size: clamp(38px, 11.5vw, 86px);
  text-shadow: 0 3px 0 rgba(20, 20, 20, 0.9), 0 0 20px rgba(255, 255, 255, 0.24);
}

.ribbon {
  width: fit-content;
  max-width: 96%;
  margin: 4px auto 0;
  padding: 8px 20px;
  color: #171000;
  background: linear-gradient(180deg, #ffe8a2, #c89232);
  font-size: clamp(18px, 5.5vw, 40px);
  font-weight: 1000;
  line-height: 1.15;
}

.hero-subtitle {
  margin: 0;
  color: #fff5da;
  font-size: clamp(15px, 4.6vw, 28px);
  font-weight: 700;
}

.schedule-section {
  padding: 14px 10px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.52);
}

.schedule-section h2,
.signup-section h2,
.benefits-section h2,
.event-footer h2 {
  margin: 0;
  color: var(--gold);
  font-weight: 1000;
  line-height: 1.1;
  text-align: center;
}

.schedule-section h2 {
  margin-bottom: 12px;
  font-size: clamp(22px, 6vw, 44px);
}

.session-picker {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0 0 12px;
  border: 0;
}

.session-choice {
  position: relative;
  display: grid;
  grid-template-columns: 38px 72px 1fr;
  gap: 8px;
  min-height: 118px;
  align-items: center;
  padding: 10px 10px;
  border: 1px solid rgba(248, 213, 122, 0.64);
  background:
    linear-gradient(90deg, rgba(35, 15, 5, 0.82), rgba(0, 0, 0, 0.7)),
    radial-gradient(circle at 88% 50%, rgba(248, 213, 122, 0.13), transparent 28%);
  cursor: pointer;
}

.session-choice input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.choice-dot {
  width: 24px;
  aspect-ratio: 1;
  justify-self: center;
  border: 2px solid rgba(255, 255, 255, 0.88);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.52);
}

.choice-dot,
.session-no,
.session-info {
  pointer-events: none;
}

.session-choice input:checked + .choice-dot {
  border-color: #fff1bd;
  background:
    radial-gradient(circle at 50% 50%, #fff6ce 0 24%, #e1a327 27% 52%, rgba(0, 0, 0, 0.62) 56% 100%);
  box-shadow: 0 0 14px rgba(255, 213, 113, 0.88);
}

.session-choice:has(input:checked) {
  border-color: #ffe6a1;
  box-shadow: inset 0 0 0 1px rgba(255, 221, 144, 0.45), 0 0 18px rgba(230, 166, 43, 0.25);
}

.session-no {
  color: var(--gold);
  font-size: clamp(46px, 13vw, 76px);
  font-weight: 1000;
  font-style: italic;
  line-height: 1;
  text-shadow: 0 2px 0 rgba(67, 39, 0, 0.9);
}

.session-info {
  display: grid;
  gap: 4px;
  color: #f7f7f7;
  font-size: clamp(12px, 3.25vw, 21px);
  font-weight: 650;
  line-height: 1.25;
}

.session-title {
  color: #fff;
  font-size: clamp(15px, 4.3vw, 28px);
  font-weight: 900;
}

.signup-section {
  margin-top: 18px;
  padding: 0 8px 4px;
}

.signup-section h2 {
  margin-bottom: 12px;
  font-size: clamp(26px, 8vw, 52px);
}

.signup-section h2 span {
  font-size: 0.5em;
}

.signup-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.field {
  display: grid;
  grid-template-columns: 84px 1fr;
  align-items: center;
  min-height: 48px;
  border: 1px solid rgba(248, 213, 122, 0.72);
  border-radius: 7px;
  background: rgba(9, 9, 9, 0.78);
  overflow: hidden;
}

.field span {
  padding-left: 14px;
  color: #fff;
  font-size: clamp(15px, 4vw, 22px);
  font-weight: 900;
}

.field input {
  width: 100%;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: 0;
  color: #fff8df;
  background: transparent;
  padding: 0 12px;
  font-size: clamp(16px, 4.4vw, 24px);
  font-weight: 800;
}

.field input::placeholder {
  color: rgba(255, 248, 223, 0.58);
}

.field:focus-within {
  border-color: #fff0ad;
  box-shadow: 0 0 18px rgba(255, 211, 105, 0.24);
}

.submit-btn {
  min-height: 56px;
  border: 1px solid #fff0ad;
  border-radius: 8px;
  color: #181000;
  background: linear-gradient(180deg, #fff0ba 0%, #dca64b 48%, #b97818 100%);
  font-size: clamp(23px, 7vw, 42px);
  font-weight: 1000;
  line-height: 1;
  cursor: pointer;
  box-shadow: inset 0 0 0 2px rgba(111, 58, 0, 0.28), 0 4px 16px rgba(0, 0, 0, 0.45);
}

.submit-btn:focus-visible,
.submit-btn:hover {
  outline: 2px solid rgba(255, 240, 173, 0.8);
  outline-offset: 2px;
}

.submit-btn[disabled] {
  cursor: wait;
  opacity: 0.76;
}

.privacy-note,
.form-message {
  margin: 10px 0 0;
  font-size: clamp(12px, 3.2vw, 18px);
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
}

.privacy-note {
  color: var(--gold);
}

.form-message {
  min-height: 22px;
  color: var(--error);
}

.success-panel {
  margin-top: 18px;
  padding: 22px 18px;
  border: 1px solid rgba(255, 211, 105, 0.8);
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(26, 16, 2, 0.94), rgba(4, 4, 4, 0.93));
  box-shadow: 0 0 28px rgba(255, 203, 93, 0.45);
  text-align: center;
}

.success-panel h2 {
  margin: 0;
  color: var(--gold);
  font-size: clamp(26px, 8vw, 48px);
  line-height: 1.1;
}

.success-panel p {
  margin: 10px 0 14px;
  color: #fff7dc;
  font-size: clamp(13px, 4vw, 22px);
  line-height: 1.45;
}

.success-panel button {
  min-height: 38px;
  padding: 0 20px;
  border: 1px solid rgba(255, 226, 153, 0.7);
  border-radius: 6px;
  color: #251600;
  background: linear-gradient(180deg, #ffe1a0 0%, #c58a2b 100%);
  font-weight: 900;
  cursor: pointer;
}

.benefits-section {
  display: grid;
  gap: 16px;
  margin-top: 22px;
  padding: 0 10px;
}

.benefits-section article {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 16px;
  align-items: center;
}

.benefit-icon {
  display: grid;
  place-items: center;
  width: 76px;
  aspect-ratio: 1;
  border: 2px solid #d5a23a;
  border-radius: 50%;
  color: #ffe9a5;
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.18), transparent 32%),
    linear-gradient(145deg, #0d673d, #082719);
  font-size: 30px;
  font-weight: 1000;
}

.benefits-section h2 {
  margin-bottom: 6px;
  text-align: left;
  font-size: clamp(21px, 6vw, 38px);
}

.benefits-section p {
  margin: 0;
  color: #f7f0dd;
  font-size: clamp(14px, 4vw, 24px);
  font-weight: 650;
  line-height: 1.45;
}

.event-footer {
  display: grid;
  gap: 8px;
  margin-top: 24px;
  padding: 20px 4px 10px;
  text-align: center;
}

.event-footer h2 {
  font-size: clamp(36px, 11vw, 76px);
  text-shadow: 0 2px 0 rgba(73, 42, 0, 0.95);
}

.event-footer p {
  margin: 0;
  color: #ffe2a0;
  font-size: clamp(15px, 4.6vw, 28px);
  font-weight: 900;
  line-height: 1.3;
}

.event-footer .quota {
  width: fit-content;
  max-width: 100%;
  margin: 4px auto;
  padding: 8px 18px;
  border: 1px solid rgba(248, 213, 122, 0.7);
  color: var(--gold-soft);
  background: rgba(0, 0, 0, 0.55);
}

.event-footer .season {
  color: #fff6da;
  font-size: clamp(26px, 8vw, 58px);
  font-weight: 1000;
}

.coast-kv {
  position: relative;
  margin: 18px -18px -28px;
  aspect-ratio: 16 / 9;
  min-height: 210px;
  overflow: hidden;
  border-top: 1px solid rgba(248, 213, 122, 0.34);
  background: #06131d;
}

.coast-kv::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.72) 0%, rgba(0, 0, 0, 0.16) 22%, rgba(0, 0, 0, 0.08) 68%, rgba(0, 0, 0, 0.4) 100%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.28), transparent 22%, transparent 78%, rgba(0, 0, 0, 0.22));
}

.coast-kv img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 620px) {
  .poster {
    padding-inline: 28px;
  }

  .signup-grid {
    grid-template-columns: 1fr 1fr;
  }

  .submit-btn {
    grid-column: 1 / -1;
  }

  .coast-kv {
    margin-inline: -28px;
    aspect-ratio: 2139 / 975;
    min-height: 260px;
  }
}

.session-venue {
  color: #f8d57a;
  font-weight: 700;
}

.venue-notice {
  margin: 6px auto 0;
  max-width: 92%;
  color: #f8d57a;
  font-weight: 700;
  text-align: center;
  line-height: 1.5;
}