:root {
  --ink: #161713;
  --paper: #f2f0e8;
  --line: rgba(22, 23, 19, .22);
  --orange: #ff5a36;
  --acid: #dfff45;
  --sans: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --serif: "ZCOOL XiaoWei", "Songti SC", serif;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); }
button, input { font: inherit; }
.page { width: min(1240px, calc(100% - 48px)); margin: 0 auto; padding: 52px 0 80px; }
.kicker { font-size: 10px; font-weight: 700; letter-spacing: .22em; }
.topbar { display: flex; justify-content: space-between; align-items: end; padding-bottom: 28px; border-bottom: 2px solid var(--ink); }
.identity { display: flex; align-items: center; gap: 22px; }
.avatar { width: 94px; height: 94px; flex: none; object-fit: cover; object-position: center 22%; border: 1px solid var(--ink); border-radius: 50%; background: white; }
.topbar h1 { margin: 10px 0 0; font-family: var(--serif); font-size: clamp(48px, 6vw, 78px); font-weight: 400; letter-spacing: -.05em; }
.topbar button { border: 1px solid var(--ink); background: transparent; padding: 13px 18px; cursor: pointer; }
.topbar button:hover { color: white; background: var(--ink); }
.single-rates { padding-top: 42px; }
.section-bar { display: flex; align-items: end; gap: 20px; padding-bottom: 15px; border-bottom: 1px solid var(--ink); }
.section-bar h2 { margin: 0; font-family: var(--serif); font-size: 42px; font-weight: 400; letter-spacing: -.04em; }
.section-bar .kicker { padding-bottom: 7px; color: #72746d; }
.rate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 18px 0 80px; }
.rate-card { min-width: 0; border: 1px solid var(--ink); }
.card-head { display: flex; justify-content: space-between; align-items: center; padding: 13px 18px; border-bottom: 1px solid currentColor; font-size: 12px; }
.card-head span { opacity: .6; }
.card-head b { display: flex; align-items: center; gap: 8px; }
.card-head .brand-logo { display: block; object-fit: contain; opacity: 1; }
.card-head .bili-logo { width: 34px; height: 34px; padding: 5px; border-radius: 8px; background: white; }
.card-head .douyin-logo { width: 72px; height: 28px; padding: 4px 7px; border-radius: 7px; background: white; }
.card-head .xhs-logo { width: 31px; height: 31px; border-radius: 7px; }
.official { padding: 35px 20px 32px; }
.official small { display: block; font-size: 11px; margin-bottom: 6px; opacity: .7; }
.price-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.official .rebate-tag { flex: none; display: inline-block; padding: 7px 11px; border: 1px solid currentColor; border-radius: 99px; font-size: 14px; font-weight: 700; opacity: 1; }
.official strong { font-family: var(--serif); font-size: clamp(42px, 4.6vw, 64px); font-weight: 400; letter-spacing: -.04em; }
.details { display: grid; grid-template-columns: 1fr; border-top: 1px solid currentColor; }
.details > div { padding: 18px 14px; border-right: 1px solid currentColor; }
.details > div:last-child { border-right: 0; }
.details small { display: block; font-size: 12px; margin-bottom: 6px; opacity: .7; }
.details b { font-family: var(--serif); font-size: 28px; font-weight: 400; white-space: nowrap; }
.underwater { background: var(--acid); color: var(--ink); }
.link-actions { display: grid; grid-template-columns: 1fr auto; border-top: 1px solid currentColor; }
.link-actions a, .link-actions button { min-height: 48px; padding: 0 14px; display: flex; align-items: center; border: 0; color: inherit; background: transparent; font-size: 11px; text-decoration: none; cursor: pointer; }
.link-actions a { justify-content: space-between; border-right: 1px solid currentColor; font-weight: 600; }
.link-actions button { min-width: 88px; justify-content: center; }
.link-actions a:hover, .link-actions button:hover { background: rgba(255,255,255,.35); }
.douyin .link-actions a:hover, .douyin .link-actions button:hover { background: rgba(255,255,255,.1); }
.bili { background: #bce7ff; }
.douyin { background: #1c1d1a; color: white; }
.rednote { background: #ff6848; }
.calculator { display: grid; grid-template-columns: .7fr 1.1fr .9fr; gap: 44px; padding: 50px; color: white; background: var(--ink); }
.calc-title h2 { margin: 12px 0 18px; font-family: var(--serif); font-size: 58px; font-weight: 400; letter-spacing: -.04em; }
.calc-title p { max-width: 260px; color: #a9aaa5; font-size: 13px; line-height: 1.8; }
.calc-form fieldset { margin: 0 0 28px; padding: 0; border: 0; }
.calc-form legend { margin-bottom: 12px; font-size: 12px; }
.calc-form legend span { display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 8px; border: 1px solid #61625d; border-radius: 50%; }
.option-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.option-grid.distribution-grid { grid-template-columns: repeat(2, 1fr); }
.option-grid label { position: relative; cursor: pointer; }
.option-grid input { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.option-grid input:disabled { cursor: not-allowed; }
.option-grid label > span { min-height: 72px; padding: 13px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid #555751; color: #aaa; transition: .15s; }
.option-grid label:hover > span { border-color: white; }
.option-grid input:checked + span { color: var(--ink); background: var(--acid); border-color: var(--acid); }
.option-grid input:disabled + span { opacity: .2; cursor: not-allowed; }
.option-grid b { font-family: var(--serif); font-size: 17px; font-weight: 400; }
.option-name { display: flex; align-items: center; gap: 7px; }
.option-name img { width: 20px; height: 20px; object-fit: contain; image-rendering: auto; }
.total-card { display: flex; flex-direction: column; min-height: 460px; padding: 24px; background: var(--paper); color: var(--ink); }
.selection-label { font-size: 9px; font-weight: 700; letter-spacing: .15em; color: #74766f; }
.total-card h3 { margin: 16px 0 8px; font-family: var(--serif); font-size: 24px; font-weight: 400; line-height: 1.45; }
.formula { color: #777970; font-size: 11px; }
.discount-banner { margin-top: 17px; padding: 11px 12px; color: var(--ink); background: var(--acid); border: 1px solid var(--ink); }
.discount-banner[hidden] { display: none; }
.discount-banner span { display: block; margin-bottom: 4px; font-size: 8px; font-weight: 700; letter-spacing: .12em; }
.discount-banner strong { font-family: var(--serif); font-size: 18px; font-weight: 400; }
.value-breakdown { margin-top: 12px; padding: 11px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.value-breakdown[hidden] { display: none; }
.value-breakdown > div, .standard-price { display: flex; align-items: center; justify-content: space-between; font-size: 10px; }
.value-breakdown > div + div { margin-top: 7px; }
.value-breakdown s { color: #777970; }
.value-breakdown b { color: var(--orange); font-family: var(--serif); font-size: 20px; font-weight: 400; }
.standard-price { margin-top: 12px; color: #777970; }
.standard-price[hidden] { display: none; }
.standard-price s { font-family: var(--serif); font-size: 17px; }
.total-line { margin-top: auto; padding: 19px 0 15px; border-top: 1px solid var(--ink); display: flex; align-items: end; justify-content: space-between; }
.total-line span { font-size: 11px; }
.total-line strong { font-family: var(--serif); font-size: 38px; font-weight: 400; }
.total-card button { border: 0; padding: 15px 17px; display: flex; justify-content: space-between; color: white; background: var(--orange); cursor: pointer; }
.total-card button:hover { filter: brightness(.9); }
.total-card p { min-height: 14px; margin: 8px 0 -8px; text-align: center; font-size: 10px; color: #777970; }
@media (max-width: 900px) {
  .page { width: min(100% - 28px, 1240px); padding-top: 28px; }
  .rate-grid { grid-template-columns: 1fr; padding-bottom: 55px; }
  .section-bar h2 { font-size: 36px; }
  .official { padding: 25px 18px; }
  .calculator { grid-template-columns: 1fr; gap: 32px; padding: 28px 20px; }
  .calc-title h2 { font-size: 48px; }
  .calc-title p { max-width: none; }
  .total-card { min-height: 300px; }
}
@media (max-width: 520px) {
  .topbar { align-items: start; }
  .identity { gap: 12px; }
  .avatar { width: 60px; height: 60px; }
  .topbar h1 { font-size: 44px; }
  .topbar .kicker { display: none; }
  .details { grid-template-columns: 1fr; }
  .option-grid { grid-template-columns: 1fr; }
  .option-grid label > span { min-height: 52px; flex-direction: row; align-items: center; }
}
@media print {
  body { background: white; }
  .page { width: 100%; padding: 0; }
  .total-card button, .total-card p, .copy-link { display: none; }
  .rate-grid { padding-bottom: 35px; }
  .calculator { padding: 28px; break-inside: avoid; }
}