/* ==========================================================================
   牛牛多帐户 — 自适应前端设计系统
   PC / 平板 / 手机 三档自适应
   ========================================================================== */

:root {
  /* 主色 */
  --c-primary: #F2610C;
  --c-primary-dk: #D24F04;
  --c-primary-lt: #FF8A3D;
  --c-primary-soft: #FFF3EA;

  /* 中性 */
  --c-ink: #15171E;
  --c-ink-2: #1E2129;
  --c-text: #23262E;
  --c-text-2: #5C6270;
  --c-text-3: #98A0AF;
  --c-line: #E8EAEF;
  --c-bg: #F6F7F9;
  --c-white: #FFFFFF;

  /* 金融语义色（中国惯例：涨红跌绿） */
  --c-up: #E33B32;
  --c-down: #17A673;

  /* 圆角 / 阴影 */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 26px;
  --sh-sm: 0 2px 8px rgba(21, 23, 30, .06);
  --sh-md: 0 8px 28px rgba(21, 23, 30, .08);
  --sh-lg: 0 18px 48px rgba(21, 23, 30, .12);
  --sh-primary: 0 10px 26px rgba(242, 97, 12, .32);

  /* 尺寸 */
  --container: 1200px;
  --header-h: 72px;
  --tabbar-h: 56px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* --------------------------------------------------------------- reset --- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
img { max-width: 100%; display: block; border: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }

/* ----------------------------------------------------------- utilities --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.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;
}

.text-primary { color: var(--c-primary); }

/* 区块通用 */
.section { padding: 72px 0; }
.section--tight { padding: 48px 0; }
.section--white { background: var(--c-white); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 34px;
}
.section-head__left { min-width: 0; }
.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -.4px;
  color: var(--c-ink);
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::before {
  content: "";
  width: 4px; height: 22px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-primary-lt), var(--c-primary));
}
.section-sub {
  margin-top: 8px;
  font-size: 14px;
  color: var(--c-text-2);
}

.link-more {
  flex: none;
  font-size: 14px;
  color: var(--c-text-2);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.link-more:hover { color: var(--c-primary); }
.link-more::after { content: "›"; font-size: 18px; line-height: 1; }

/* ------------------------------------------------------------- buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform .16s var(--ease), box-shadow .22s var(--ease),
              background-color .2s var(--ease), color .2s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(135deg, var(--c-primary-lt), var(--c-primary));
  color: #fff;
  box-shadow: var(--sh-primary);
}
.btn--primary:hover { box-shadow: 0 14px 32px rgba(242, 97, 12, .42); }

.btn--ghost {
  background: rgba(255, 255, 255, .1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .28);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .18); }

.btn--outline {
  background: var(--c-white);
  color: var(--c-text);
  border: 1px solid var(--c-line);
}
.btn--outline:hover { border-color: var(--c-primary); color: var(--c-primary); }

.btn--block { width: 100%; }
.btn--lg { height: 50px; padding: 0 30px; font-size: 16px; }

/* -------------------------------------------------------------- header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-h);
  background: rgba(21, 23, 30, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 36px;
}

.logo {
  flex: none;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}
.logo__mark { flex: none; width: 36px; height: 36px; }
.logo__text { display: flex; flex-direction: column; line-height: 1.15; }
.logo__name { font-size: 17px; font-weight: 700; letter-spacing: .2px; }
.logo__slogan { font-size: 10px; color: rgba(255, 255, 255, .45); letter-spacing: 1.6px; }

.nav { display: flex; align-items: center; gap: 4px; margin-right: auto; }
.nav__item {
  position: relative;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: rgba(255, 255, 255, .76);
}
.nav__item:hover { color: #fff; background: rgba(255, 255, 255, .07); }
.nav__item.is-active { color: #fff; font-weight: 600; }
.nav__item.is-active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 2px;
  transform: translateX(-50%);
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--c-primary);
}

.header__actions { display: flex; align-items: center; gap: 10px; flex: none; }
.header__actions .btn { height: 38px; padding: 0 18px; font-size: 14px; }
.header__user { display: flex; align-items: center; gap: 8px; color: #fff; font-size: 14px; }
.header__avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-lt), var(--c-primary));
  display: grid; place-items: center;
  font-size: 13px; font-weight: 700; color: #fff;
}

.burger {
  display: none;
  width: 40px; height: 40px;
  margin-left: auto;
  place-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, .08);
}
.burger span {
  display: block; width: 18px; height: 2px; border-radius: 2px;
  background: #fff; position: relative;
}
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0;
  width: 18px; height: 2px; border-radius: 2px; background: #fff;
  transition: transform .24s var(--ease), opacity .2s;
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.burger.is-open span { background: transparent; }
.burger.is-open span::before { transform: translateY(6px) rotate(45deg); }
.burger.is-open span::after { transform: translateY(-6px) rotate(-45deg); }

/* 移动抽屉 */
.drawer {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  z-index: 190;
  background: var(--c-ink);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  padding: 8px 0 18px;
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.drawer.is-open { opacity: 1; visibility: visible; transform: none; }
.drawer__list { display: grid; }
.drawer__link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 15px 24px;
  color: rgba(255, 255, 255, .82);
  font-size: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, .05);
}
.drawer__link.is-active { color: var(--c-primary-lt); font-weight: 600; }
.drawer__link::after { content: "›"; font-size: 20px; opacity: .4; }
.drawer__cta { padding: 18px 24px 0; display: grid; gap: 10px; }

/* ---------------------------------------------------------------- hero --- */
.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(120% 130% at 82% 8%, #2A2F3D 0%, var(--c-ink) 46%, #0E1015 100%);
  color: #fff;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(120% 100% at 70% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 100% at 70% 0%, #000 20%, transparent 78%);
}
.hero::after {
  content: "";
  position: absolute;
  top: -180px; right: -120px;
  width: 620px; height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 97, 12, .5) 0%, rgba(242, 97, 12, 0) 66%);
  filter: blur(20px);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  align-items: center;
  gap: 56px;
  padding: 92px 0 96px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(242, 97, 12, .16);
  border: 1px solid rgba(242, 97, 12, .34);
  color: var(--c-primary-lt);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
}
.hero__badge i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-primary-lt);
  box-shadow: 0 0 0 4px rgba(242, 97, 12, .2);
}
.hero__title {
  font-size: 46px;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -1px;
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--c-primary-lt), #FFC46B);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__desc {
  margin-top: 20px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .66);
  max-width: 520px;
}
.hero__actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero__stats {
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 520px;
}
.hero__stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -.5px;
  color: #fff;
}
.hero__stat span { font-size: 13px; color: rgba(255, 255, 255, .5); }

/* hero 右侧：终端模拟卡 */
.hero__visual { position: relative; }
.mock {
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .03));
  border: 1px solid rgba(255, 255, 255, .12);
  padding: 18px;
  box-shadow: 0 40px 80px rgba(0, 0, 0, .45);
  backdrop-filter: blur(6px);
}
.mock__bar { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; }
.mock__dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .22); }
.mock__dot:first-child { background: #FF5F57; }
.mock__dot:nth-child(2) { background: #FEBC2E; }
.mock__dot:nth-child(3) { background: #28C840; }
.mock__title { margin-left: 10px; font-size: 12px; color: rgba(255, 255, 255, .42); }

.mock__row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .05);
  margin-bottom: 8px;
  font-size: 13px;
}
.mock__row:last-child { margin-bottom: 0; }
.mock__name { color: rgba(255, 255, 255, .84); font-weight: 600; }
.mock__code { color: rgba(255, 255, 255, .38); font-size: 12px; margin-left: 6px; }
.mock__val { font-variant-numeric: tabular-nums; font-weight: 600; }
.mock__val.up { color: #FF6B60; }
.mock__val.down { color: #35C48D; }
.mock__spark {
  height: 74px;
  margin: 14px 0 4px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(242, 97, 12, .28), rgba(242, 97, 12, 0));
  border-bottom: 2px solid var(--c-primary);
  clip-path: polygon(0 78%, 12% 62%, 24% 70%, 36% 42%, 48% 54%, 60% 26%, 72% 38%, 84% 14%, 100% 24%, 100% 100%, 0 100%);
}
.mock__note {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: rgba(255, 255, 255, .35);
  margin-top: 12px;
}

/* --------------------------------------------------------------- cards --- */
.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.entry {
  position: relative;
  display: block;
  padding: 30px 26px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  transition: transform .26s var(--ease), box-shadow .26s var(--ease),
              border-color .26s var(--ease);
  overflow: hidden;
}
.entry::after {
  content: "";
  position: absolute;
  right: -40px; top: -40px;
  width: 130px; height: 130px;
  border-radius: 50%;
  background: var(--c-primary-soft);
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.entry:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-md);
  border-color: #F3D3B8;
}
.entry:hover::after { opacity: 1; }
.entry__icon {
  position: relative;
  z-index: 1;
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--c-primary-lt), var(--c-primary));
  color: #fff;
  margin-bottom: 18px;
  box-shadow: var(--sh-primary);
}
.entry__icon svg { width: 26px; height: 26px; }
.entry__title {
  position: relative; z-index: 1;
  font-size: 17px; font-weight: 700; color: var(--c-ink);
  margin-bottom: 8px;
}
.entry__desc {
  position: relative; z-index: 1;
  font-size: 14px; color: var(--c-text-2); line-height: 1.8;
}
.entry__more {
  position: relative; z-index: 1;
  margin-top: 16px;
  font-size: 13px; font-weight: 600; color: var(--c-primary);
  display: inline-flex; align-items: center; gap: 4px;
}
.entry__more::after { content: "→"; transition: transform .2s var(--ease); }
.entry:hover .entry__more::after { transform: translateX(3px); }

/* 数字变体（图标用淡色底） */
.entry--plain .entry__icon {
  background: var(--c-primary-soft);
  color: var(--c-primary);
  box-shadow: none;
}

/* ------------------------------------------------------------ download --- */
.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 26px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  transition: transform .26s var(--ease), box-shadow .26s var(--ease), border-color .26s;
}
.dl-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: #F3D3B8; }
.dl-card--feature {
  border-color: var(--c-primary);
  box-shadow: var(--sh-primary);
  background: linear-gradient(180deg, #FFF9F4, var(--c-white) 40%);
}
.dl-card__tag {
  position: absolute; top: 18px; right: 18px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px; font-weight: 700;
  background: var(--c-primary); color: #fff;
}
.dl-card__os {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 18px;
}
.dl-card__os-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--c-primary-soft); color: var(--c-primary);
}
.dl-card__os-icon svg { width: 24px; height: 24px; }
.dl-card__os-name { font-size: 16px; font-weight: 700; color: var(--c-ink); }
.dl-card__os-meta { font-size: 12px; color: var(--c-text-3); }
.dl-card__desc { font-size: 14px; color: var(--c-text-2); line-height: 1.8; margin-bottom: 20px; }
.dl-card__meta {
  margin-bottom: 20px;
  display: grid; gap: 8px;
  font-size: 13px; color: var(--c-text-2);
}
.dl-card__meta li { display: flex; align-items: center; gap: 8px; }
.dl-card__meta li::before {
  content: ""; flex: none;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--c-primary);
}
.dl-card__foot { margin-top: auto; }

/* 步骤 */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: s; }
.step {
  position: relative;
  padding: 24px 22px 22px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
}
.step::before {
  counter-increment: s;
  content: "0" counter(s);
  display: block;
  font-size: 26px; font-weight: 800;
  letter-spacing: -1px;
  color: var(--c-primary-soft);
  -webkit-text-stroke: 1px #F7C7A4;
  margin-bottom: 8px;
}
.step__title { font-size: 15px; font-weight: 700; color: var(--c-ink); margin-bottom: 6px; }
.step__desc { font-size: 13px; color: var(--c-text-2); line-height: 1.8; }

/* ------------------------------------------------------------ articles --- */
.article-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s;
}
.article-item:hover { transform: translateY(-2px); box-shadow: var(--sh-md); border-color: #F3D3B8; }
.article-item__date {
  flex: none;
  width: 56px; text-align: center;
  border-right: 1px solid var(--c-line);
  padding-right: 16px;
}
.article-item__day { font-size: 22px; font-weight: 800; color: var(--c-ink); line-height: 1.1; }
.article-item__ym { font-size: 11px; color: var(--c-text-3); }
.article-item__body { min-width: 0; flex: 1; }
.article-item__title {
  font-size: 16px; font-weight: 700; color: var(--c-ink);
  margin-bottom: 6px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.article-item__excerpt {
  font-size: 13px; color: var(--c-text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-item__arrow { flex: none; color: var(--c-text-3); font-size: 20px; }
.article-item:hover .article-item__arrow { color: var(--c-primary); }

.chip {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
  background: var(--c-primary-soft); color: var(--c-primary);
}

/* 文章正文 */
.prose { font-size: 15px; line-height: 2; color: var(--c-text); }
.prose p { margin-bottom: 18px; }
.prose h3 { font-size: 18px; font-weight: 700; color: var(--c-ink); margin: 30px 0 14px; }
.prose strong { color: var(--c-ink); }
.prose ul { margin: 0 0 18px; display: grid; gap: 8px; }
.prose ul li { position: relative; padding-left: 18px; }
.prose ul li::before {
  content: ""; position: absolute; left: 0; top: .78em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-primary);
}

.page-hero {
  position: relative;
  padding: 52px 0 46px;
  background: radial-gradient(120% 180% at 84% 0%, #2A2F3D 0%, var(--c-ink) 52%, #0E1015 100%);
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute; top: -160px; right: -80px;
  width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 97, 12, .42), transparent 66%);
  filter: blur(14px);
}
.page-hero__crumb {
  position: relative; z-index: 1;
  font-size: 13px; color: rgba(255, 255, 255, .5);
  margin-bottom: 14px;
}
.page-hero__crumb a:hover { color: var(--c-primary-lt); }
.page-hero__title {
  position: relative; z-index: 1;
  font-size: 34px; font-weight: 800; letter-spacing: -.6px;
}
.page-hero__desc {
  position: relative; z-index: 1;
  margin-top: 12px; max-width: 640px;
  font-size: 15px; line-height: 1.85; color: rgba(255, 255, 255, .62);
}

.card {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
}
.card__body { padding: 30px 32px; }
.card__head {
  padding: 20px 26px;
  border-bottom: 1px solid var(--c-line);
  font-size: 16px; font-weight: 700; color: var(--c-ink);
}

/* ----------------------------------------------------------------- mall --- */
.filters {
  display: grid;
  gap: 16px;
  padding: 22px 24px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  margin-bottom: 26px;
}
.filter-row { display: flex; align-items: flex-start; gap: 14px; }
.filter-row__label {
  flex: none; width: 68px;
  font-size: 13px; color: var(--c-text-3);
  padding-top: 8px;
}
.filter-row__opts { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-opt {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  background: var(--c-bg);
  border: 1px solid transparent;
  color: var(--c-text-2);
  transition: all .2s var(--ease);
}
.filter-opt:hover { color: var(--c-primary); }
.filter-opt.is-active {
  background: var(--c-primary);
  color: #fff;
  font-weight: 600;
  box-shadow: var(--sh-primary);
}

.goods {
  position: relative;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s;
}
.goods:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: #F3D3B8; }
.goods__thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background:
    linear-gradient(135deg, #FFF6EF, #FFE9DA);
  display: grid; place-items: center;
  color: #F0B183;
}
.goods__thumb svg { width: 54px; height: 54px; }
.goods__cat {
  position: absolute; top: 12px; left: 12px;
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 600;
  background: rgba(21, 23, 30, .7); color: #fff;
}
.goods__body { padding: 16px 16px 18px; display: flex; flex-direction: column; flex: 1; }
.goods__name {
  font-size: 15px; font-weight: 600; color: var(--c-ink);
  margin-bottom: 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 44px;
}
.goods__foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.goods__point {
  font-size: 17px; font-weight: 800; color: var(--c-primary);
  font-variant-numeric: tabular-nums;
}
.goods__point small { font-size: 11px; font-weight: 600; margin-left: 2px; }
.goods__btn {
  height: 34px; padding: 0 14px;
  border-radius: 8px;
  font-size: 13px; font-weight: 600;
  background: var(--c-primary-soft); color: var(--c-primary);
  transition: all .2s var(--ease);
}
.goods__btn:hover { background: var(--c-primary); color: #fff; }
.goods__btn:disabled { opacity: .45; cursor: not-allowed; background: var(--c-bg); color: var(--c-text-3); }

.empty {
  padding: 60px 24px;
  text-align: center;
  color: var(--c-text-3);
  background: var(--c-white);
  border: 1px dashed var(--c-line);
  border-radius: var(--r-md);
  font-size: 14px;
}

/* ----------------------------------------------------------------- form --- */
.auth {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  place-items: center;
  padding: 48px 24px;
  background:
    radial-gradient(90% 70% at 50% 0%, #FFF1E6 0%, transparent 60%),
    var(--c-bg);
}
.auth__box {
  width: 100%;
  max-width: 420px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-lg);
  padding: 36px 34px 32px;
}
.auth__title { font-size: 24px; font-weight: 800; color: var(--c-ink); letter-spacing: -.4px; }
.auth__sub { margin-top: 6px; font-size: 13px; color: var(--c-text-2); }
.auth__form { margin-top: 26px; display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field__label { font-size: 13px; font-weight: 600; color: var(--c-text-2); }
.field__input {
  height: 46px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--c-line);
  background: var(--c-bg);
  font-size: 15px;
  transition: border-color .2s, background .2s, box-shadow .2s;
  width: 100%;
}
.field__input:focus {
  outline: none;
  background: var(--c-white);
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(242, 97, 12, .12);
}
.field__row { display: flex; align-items: center; gap: 10px; }
.field__row .field__input { flex: 1; }
.field__btn {
  flex: none; height: 46px; padding: 0 16px;
  border-radius: 10px;
  font-size: 14px; font-weight: 600;
  background: var(--c-primary-soft); color: var(--c-primary);
  white-space: nowrap;
}
.field__btn:disabled { opacity: .5; cursor: not-allowed; }
.auth__extra {
  margin-top: 4px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--c-text-2);
}
.auth__extra a:hover { color: var(--c-primary); }
.auth__foot {
  margin-top: 22px; padding-top: 20px;
  border-top: 1px solid var(--c-line);
  text-align: center; font-size: 14px; color: var(--c-text-2);
}
.auth__foot a { color: var(--c-primary); font-weight: 600; }
.auth__steps { display: flex; align-items: center; gap: 8px; margin-top: 22px; }
.auth__step {
  flex: 1; display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--c-text-3);
}
.auth__step i {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--c-bg); color: var(--c-text-3);
  font-size: 11px; font-style: normal; font-weight: 700;
}
.auth__step.is-active { color: var(--c-primary); font-weight: 600; }
.auth__step.is-active i { background: var(--c-primary); color: #fff; }
.agree { display: flex; align-items: flex-start; gap: 9px; font-size: 13px; color: var(--c-text-2); line-height: 1.6; }
.agree input { margin-top: 3px; accent-color: var(--c-primary); width: 15px; height: 15px; flex: none; }
.agree a { color: var(--c-primary); }

/* --------------------------------------------------------------- footer --- */
.footer {
  background: var(--c-ink);
  color: rgba(255, 255, 255, .6);
  padding: 54px 0 0;
  margin-top: 0;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer__brand .logo { margin-bottom: 16px; }
.footer__desc { font-size: 13px; line-height: 1.9; max-width: 300px; color: rgba(255, 255, 255, .5); }
.footer__col-title {
  font-size: 14px; font-weight: 700; color: #fff;
  margin-bottom: 16px;
}
.footer__links { display: grid; gap: 11px; }
.footer__links a { font-size: 13px; color: rgba(255, 255, 255, .58); }
.footer__links a:hover { color: var(--c-primary-lt); }
.footer__bottom {
  padding: 22px 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; color: rgba(255, 255, 255, .38);
}
.footer__bottom-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* --------------------------------------------------------- mobile tabbar --- */
.tabbar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 210;
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--c-line);
}
.tabbar__list { display: grid; grid-template-columns: repeat(4, 1fr); height: var(--tabbar-h); }
.tabbar__link {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px;
  font-size: 11px;
  color: var(--c-text-3);
}
.tabbar__link svg { width: 21px; height: 21px; }
.tabbar__link.is-active { color: var(--c-primary); font-weight: 600; }

/* ------------------------------------------------------------ responsive --- */
@media (max-width: 1100px) {
  .hero__title { font-size: 40px; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__top { grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 28px; }
}

@media (max-width: 992px) {
  :root { --header-h: 64px; }

  .nav { display: none; }
  .header__actions { display: none; }
  .burger { display: grid; }
  .header__inner { gap: 16px; }

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

  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    padding: 56px 0 60px;
  }
  .hero::after { width: 420px; height: 420px; top: -160px; right: -160px; }
  .hero__visual { max-width: 520px; }

  .section { padding: 52px 0; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: 1fr; }

  .footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer { padding-bottom: var(--tabbar-h); }
  .tabbar { display: block; }
  body { padding-bottom: 0; }
}

@media (max-width: 768px) {
  body { font-size: 14.5px; }
  .container { padding: 0 16px; }

  .section { padding: 40px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 10px; margin-bottom: 24px; }
  .section-title { font-size: 22px; }
  .section-title::before { height: 18px; }

  .hero__inner { padding: 44px 0 48px; gap: 32px; }
  .hero__title { font-size: 30px; letter-spacing: -.5px; }
  .hero__desc { font-size: 14.5px; margin-top: 16px; }
  .hero__actions { margin-top: 26px; }
  .hero__actions .btn { flex: 1; min-width: 140px; }
  .hero__stats { margin-top: 32px; padding-top: 22px; gap: 12px; }
  .hero__stat strong { font-size: 21px; }
  .hero__stat span { font-size: 11.5px; }
  .mock { padding: 14px; }
  .mock__row { font-size: 12px; padding: 9px 10px; }
  .mock__spark { height: 56px; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .entry { padding: 22px 20px; }
  .entry__icon { width: 46px; height: 46px; margin-bottom: 14px; }
  .entry__title { font-size: 16px; }

  .page-hero { padding: 34px 0 32px; }
  .page-hero__title { font-size: 24px; }
  .page-hero__desc { font-size: 14px; }

  .card__body { padding: 22px 18px; }
  .card__head { padding: 16px 18px; }

  .article-item { padding: 16px; gap: 14px; }
  .article-item__date { width: 46px; padding-right: 12px; }
  .article-item__day { font-size: 18px; }
  .article-item__title { font-size: 15px; white-space: normal; }
  .article-item__excerpt { font-size: 12.5px; -webkit-line-clamp: 2; }

  .filters { padding: 16px 16px; gap: 14px; }
  .filter-row { flex-direction: column; gap: 8px; }
  .filter-row__label { width: auto; padding-top: 0; font-weight: 600; }
  .filter-row__opts { gap: 7px; }
  .filter-opt { padding: 6px 13px; font-size: 12.5px; }

  .auth { min-height: auto; padding: 28px 16px 40px; }
  .auth__box { padding: 26px 20px 24px; border-radius: var(--r-lg); }
  .auth__title { font-size: 21px; }

  .footer { padding-top: 36px; }
  .footer__top { grid-template-columns: minmax(0, 1fr); gap: 26px; padding-bottom: 26px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
}

@media (max-width: 420px) {
  .hero__title { font-size: 26px; }
  .hero__stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hero__stat strong { font-size: 18px; }
}

/* ------------------------------------------------------------------ faq --- */
.faq { display: grid; gap: 12px; max-width: 880px; }
.faq details {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  padding: 0 22px;
  transition: border-color .2s, box-shadow .2s;
}
.faq details[open] { border-color: #F3D3B8; box-shadow: var(--sh-sm); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: none;
  font-size: 20px;
  font-weight: 400;
  color: var(--c-text-3);
  transition: color .2s, transform .24s var(--ease);
}
.faq details[open] summary::after { content: "−"; color: var(--c-primary); }
.faq details p {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.95;
  color: var(--c-text-2);
}
.section--white .faq details { background: var(--c-bg); border-color: transparent; }

/* -------------------------------------------------------- 联系我们卡片 --- */
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.contact {
  padding: 26px 24px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
}
.contact__label { font-size: 13px; color: var(--c-text-3); margin-bottom: 8px; }
.contact__value { font-size: 17px; font-weight: 700; color: var(--c-ink); word-break: break-all; }
.contact__value a:hover { color: var(--c-primary); }

/* ---------------------------------------------------------- 回到顶部 --- */
.to-top {
  position: fixed;
  right: 22px; bottom: 26px;
  z-index: 180;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 18px; line-height: 1;
  background: var(--c-white);
  color: var(--c-text-2);
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .24s var(--ease), transform .24s var(--ease),
              visibility .24s, color .2s, border-color .2s;
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--c-primary); border-color: var(--c-primary); }

/* 图片轮播（备用） */
.slider { position: relative; overflow: hidden; border-radius: var(--r-lg); }
.slider__track { display: flex; transition: transform .5s var(--ease); }
.slider__track > * { flex: 0 0 100%; }
.slider__dots {
  position: absolute; left: 50%; bottom: 14px;
  transform: translateX(-50%);
  display: flex; gap: 7px;
}
.slider__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255, 255, 255, .5);
  transition: all .24s var(--ease);
}
.slider__dot.is-active { width: 22px; border-radius: 4px; background: #fff; }

@media (max-width: 992px) {
  .to-top { bottom: calc(var(--tabbar-h) + 16px); right: 14px; }
}

/* ------------------------------------------------------- 轻提示 / 表单提示 --- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 96px;
  transform: translate(-50%, 12px);
  max-width: min(88vw, 460px);
  padding: 13px 22px;
  border-radius: 10px;
  background: rgba(21, 23, 30, .94);
  color: #fff;
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 9999;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .22);
}
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }
.toast--error { background: rgba(198, 45, 38, .96); }
.toast--ok { background: rgba(23, 166, 115, .96); }

.form-msg {
  display: none;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
}
.form-msg.is-show { display: block; }
.form-msg--error { color: #D8382F; }
.form-msg--ok { color: #17A673; }

@media (min-width: 993px) {
  .toast { bottom: 44px; }
}

/* 打印 */
@media print {
  .header, .tabbar, .footer, .hero__actions, .to-top { display: none; }
}