:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --stroke: #e3e3e8;
  --stroke-strong: #d2d2d7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --faint: #86868b;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-2: #bf5af2;
  --accent-3: #ff375f;
  --good: #00a35c;
  --radius: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Segoe UI", "Noto Sans Thai", "Sukhumvit Set", "Helvetica Neue", Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 20px 80px;
}

/* ---------- hero ---------- */
.hero {
  text-align: center;
  padding: 56px 28px 44px;
  border-radius: var(--radius);
  background: radial-gradient(
      900px 420px at 50% -30%,
      rgba(0, 113, 227, 0.08),
      transparent 70%
    ),
    var(--card);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
}
.apple-logo {
  font-size: 42px;
  line-height: 1;
  color: #1d1d1f;
}
.kicker {
  display: inline-block;
  margin: 16px 0 10px;
  padding: 5px 14px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--accent);
  background: rgba(0, 113, 227, 0.1);
  border-radius: 999px;
}
.hero h1 {
  margin: 6px auto 8px;
  max-width: 720px;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}
.hero .sub {
  color: var(--muted);
  font-size: 16px;
  max-width: 600px;
  margin: 8px auto 0;
}

/* ---------- card / sections ---------- */
.card {
  margin-top: 20px;
  padding: 28px 26px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
}
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin: 0 0 4px;
}
.section-title .num {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
}
.section-desc {
  color: var(--muted);
  font-size: 14.5px;
  margin: 2px 0 20px;
}

/* ---------- fields ---------- */
.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 620px) {
  .grid2 {
    grid-template-columns: 1fr;
  }
}
.field {
  margin-bottom: 16px;
}
.field > label {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.req {
  color: var(--accent-3);
}
input[type="text"],
textarea,
select {
  width: 100%;
  padding: 13px 14px;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--stroke-strong);
  border-radius: 12px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input::placeholder,
textarea::placeholder {
  color: #b0b0b8;
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}
textarea {
  min-height: 92px;
  resize: vertical;
}

/* ---------- emoji rating scale ---------- */
.q {
  padding: 18px 0;
  border-bottom: 1px solid var(--stroke);
}
.q:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}
.q-label {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
}
.q-label .req {
  margin-left: 4px;
}
.scale {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
@media (max-width: 520px) {
  .scale {
    gap: 6px;
  }
}
.scale input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.scale label {
  cursor: pointer;
  text-align: center;
  padding: 12px 6px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--stroke-strong);
  transition: transform 0.15s, background 0.2s, border-color 0.2s,
    box-shadow 0.2s;
  user-select: none;
}
.scale label .face {
  font-size: 26px;
  display: block;
  line-height: 1.1;
  filter: grayscale(0.6);
  transition: filter 0.2s, transform 0.2s;
}
.scale label .cap {
  display: block;
  font-size: 11.5px;
  color: var(--faint);
  margin-top: 6px;
}
.scale label:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.scale input:checked + label {
  background: rgba(0, 113, 227, 0.08);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
  transform: translateY(-2px);
}
.scale input:checked + label .face {
  filter: grayscale(0) saturate(1.15);
  transform: scale(1.12);
}
.scale input:checked + label .cap {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- recommend radios ---------- */
.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
@media (max-width: 520px) {
  .choices {
    grid-template-columns: 1fr;
  }
}
.choices input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.choices label {
  cursor: pointer;
  padding: 14px 16px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--stroke-strong);
  font-size: 14.5px;
  transition: all 0.18s;
}
.choices label:hover {
  border-color: var(--good);
}
.choices input:checked + label {
  background: rgba(0, 163, 92, 0.08);
  border-color: var(--good);
  box-shadow: 0 0 0 3px rgba(0, 163, 92, 0.12);
  font-weight: 600;
}

/* ---------- button ---------- */
.actions {
  margin-top: 28px;
  text-align: center;
}
.btn {
  appearance: none;
  cursor: pointer;
  border: 0;
  font-family: inherit;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  padding: 14px 44px;
  border-radius: 980px;
  background: var(--accent);
  transition: background 0.2s, transform 0.1s;
}
.btn:hover {
  background: var(--accent-hover);
}
.btn:active {
  transform: scale(0.98);
}
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}
.hint {
  color: var(--faint);
  font-size: 13px;
  margin-top: 14px;
}
.err {
  color: #d70015;
  font-size: 14px;
  margin-top: 12px;
  min-height: 18px;
}

/* ---------- thank you ---------- */
.thanks {
  text-align: center;
  padding: 64px 24px;
}
.thanks .big {
  font-size: 64px;
  line-height: 1;
}
.thanks h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 18px 0 8px;
}
.thanks p {
  color: var(--muted);
  font-size: 16px;
}

.foot {
  text-align: center;
  color: var(--faint);
  font-size: 12.5px;
  margin-top: 32px;
}
.hidden {
  display: none !important;
}