:root { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: #182230; background: #f7f8fa; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: linear-gradient(180deg, #f7f8fa 0%, #eef2f6 100%); }
.page { width: min(100%, 680px); margin: 0 auto; padding: 28px 18px 48px; }
.hero { padding: 8px 4px 24px; }
.eyebrow { color: #56708f; font-size: 13px; letter-spacing: .12em; margin-bottom: 10px; }
h1 { font-size: clamp(28px, 7vw, 42px); line-height: 1.16; letter-spacing: -.04em; margin: 0 0 16px; }
.hero p { color: #5e6b79; font-size: 16px; line-height: 1.75; margin: 6px 0; }
.hero .time { color: #1b6fdb; font-weight: 600; }
form { display: grid; gap: 18px; }
.question, fieldset { border: 0; background: rgba(255,255,255,.88); box-shadow: 0 8px 30px rgba(30, 48, 72, .06); border-radius: 18px; padding: 18px; margin: 0; }
.question span, legend { display: block; font-size: 17px; line-height: 1.45; font-weight: 700; padding: 0; margin-bottom: 12px; }
i { color: #e25555; font-style: normal; margin-left: 4px; }
input, textarea { width: 100%; border: 1px solid #dbe2e9; border-radius: 12px; padding: 13px 14px; color: #182230; background: #fbfcfd; font: inherit; font-size: 16px; outline: none; }
textarea { resize: vertical; min-height: 82px; line-height: 1.6; }
input:focus, textarea:focus { border-color: #6da4e8; box-shadow: 0 0 0 3px rgba(66, 139, 230, .13); }
.choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.choices button { min-height: 52px; border: 1px solid #dbe2e9; border-radius: 13px; padding: 10px 8px; background: #fff; color: #334150; font: inherit; font-size: 15px; line-height: 1.3; cursor: pointer; transition: .15s ease; }
.choices button.selected { border-color: #1f78df; background: #eaf3ff; color: #0c5db7; box-shadow: inset 0 0 0 1px #1f78df; font-weight: 650; }
.submit { width: 100%; min-height: 56px; border: 0; border-radius: 16px; background: #1f78df; color: #fff; font: inherit; font-size: 18px; font-weight: 700; box-shadow: 0 10px 24px rgba(31,120,223,.24); cursor: pointer; }
.submit:disabled { opacity: .65; }
.error { min-height: 1.4em; color: #c33c3c; text-align: center; margin: -6px 0 0; }
.hidden { display: none !important; }
.success { text-align: center; background: #fff; border-radius: 22px; padding: 42px 24px; box-shadow: 0 12px 36px rgba(30,48,72,.08); }
.check { display: grid; place-items: center; width: 58px; height: 58px; margin: 0 auto 18px; border-radius: 50%; color: #168653; background: #e4f7ed; font-size: 34px; }
.success h2 { margin: 0 0 14px; font-size: 26px; }
.success p { color: #5e6b79; font-size: 17px; line-height: 1.8; }
.success strong { color: #182230; }
@media (max-width: 390px) { .page { padding-inline: 14px; } .question, fieldset { padding: 15px; } .choices { grid-template-columns: 1fr; } }