/* ============================================================================
   Readout — 营销站样式（纯静态，零外部依赖，无外链字体）
   设计语言：几何无衬线 + 强圆角药丸 + 玫红主色 + 白/暖灰分段底
   断点：≤980 平板单列，≤560 手机（390px 起测）
   ========================================================================== */

:root {
  /* 品牌 */
  --pink: #E8105E;
  --pink-2: #F0127E;
  --pink-deep: #C30A4C;
  --ink: #111114;
  --ink-2: #54545A;
  --ink-3: #86868E;

  /* 语义（与技术形态色带一致） */
  --green: #2FA356;
  --green-soft: #C9EBC9;
  --red: #E0444B;
  --red-soft: #F6C9CC;
  --gold: #F0D048;

  /* 底与线 */
  --white: #FFFFFF;
  --warm: #F6F5F2;
  --warm-2: #EFEDE8;
  --line: #E9E7E2;
  --line-2: #DAD7D0;

  /* 形状 */
  --r-card: 20px;
  --r-sm: 12px;
  --r-pill: 999px;
  --shadow: 0 4px 20px rgba(0, 0, 0, .06);
  --shadow-lg: 0 18px 60px rgba(17, 17, 20, .10);

  /* 布局 */
  --wrap: 1160px;
  --pad: 24px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Helvetica Neue",
          Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden; /* 兜底：任何溢出都不产生横向滚动条 */
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }
img { height: auto; display: block; }

a { color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -.022em;
  font-weight: 800;
  text-wrap: balance;
}

p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(232, 16, 94, .16); }

/* 焦点可见性（键盘用户） */
:focus-visible {
  outline: 2px solid var(--pink);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------------- 布局原子 ---------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section { padding: 84px 0; }
.section--warm { background: var(--warm); }
.section--tight { padding: 64px 0; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--pink);
  margin-bottom: 18px;
}

.h1 { font-size: clamp(30px, 4.2vw, 48px); }
.h2 { font-size: clamp(27px, 3.6vw, 43px); }
.h3 { font-size: clamp(19px, 2vw, 22px); font-weight: 750; letter-spacing: -.01em; }

.lede {
  font-size: clamp(16px, 1.55vw, 19px);
  color: var(--ink-2);
  max-width: 60ch;
}

.muted { color: var(--ink-2); }
.small { font-size: 14px; }
.tiny { font-size: 12.5px; line-height: 1.5; color: var(--ink-3); }

.center { text-align: center; }
.center .lede { margin-left: auto; margin-right: auto; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -.005em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .14s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}

.btn:active { transform: translateY(1px) scale(.995); }

.btn--primary {
  background: linear-gradient(180deg, var(--pink-2), var(--pink));
  color: #fff;
  box-shadow: 0 8px 22px rgba(232, 16, 94, .24);
}
.btn--primary:hover { background: linear-gradient(180deg, #F6308D, var(--pink-deep)); }

.btn--dark {
  background: #1B1B1F;
  color: #fff;
  box-shadow: 0 8px 22px rgba(17, 17, 20, .18);
}
.btn--dark:hover { background: #000; }

.btn--ghost {
  background: var(--white);
  color: var(--ink);
  border-color: var(--line-2);
}
.btn--ghost:hover { border-color: var(--ink); }

.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--block { width: 100%; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------------- 顶栏 ---------------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-head__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 66px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -.03em;
  flex: 0 0 auto;
}
.brand img { width: 26px; height: 26px; }
.brand b { color: var(--pink); font-weight: 800; }

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
}
.nav a { text-decoration: none; }
.nav a:hover { color: var(--ink); }

.head-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line-2);
  border-radius: var(--r-pill);
  padding: 3px;
  font-size: 13px;
  font-weight: 600;
}
.lang a {
  padding: 5px 11px;
  border-radius: var(--r-pill);
  text-decoration: none;
  color: var(--ink-2);
  line-height: 1;
}
.lang a[aria-current="true"] { background: var(--ink); color: #fff; }

/* 手机端只留品牌 + CTA */
@media (max-width: 860px) {
  .nav { display: none; }
  .site-head__inner { height: 60px; }
}
@media (max-width: 430px) {
  /* 手机上语言切换必须留着（英文站 / 中文页互相可达），只压缩尺寸 */
  .head-right { gap: 8px; }
  .head-right .btn { padding: 9px 14px; font-size: 13px; }
  .lang { font-size: 12px; }
  .lang a { padding: 5px 9px; }
  .brand { font-size: 17px; }
}

/* ---------------- 首屏 ---------------- */
.hero {
  position: relative;
  padding: 64px 0 76px;
  background:
    radial-gradient(900px 420px at 88% -8%, rgba(240, 18, 126, .085), transparent 62%),
    radial-gradient(700px 380px at 6% 0%, rgba(240, 208, 72, .14), transparent 60%),
    var(--white);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.hero__title { margin-bottom: 22px; }
.hero__title span { display: block; }
.hero__title em {
  font-style: normal;
  color: var(--pink);
}
.hero__title .neg { color: var(--ink); }

.hero .lede { margin-bottom: 30px; }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 26px;
  font-size: 13.5px;
  color: var(--ink-3);
}
.hero__meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero__meta svg { width: 15px; height: 15px; flex: 0 0 auto; color: var(--green); }

.hero__art { position: relative; min-width: 0; }
.hero__art img { width: 100%; border-radius: var(--r-card); }
/* 首屏图是内联 SVG：尺寸交给 CSS，按 viewBox 比例自适应（否则会按 attribute 高度被拉高留白） */
.hero__art svg {
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 446;
  display: block;
}

.art-note {
  margin-top: 12px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
}

@media (max-width: 480px) {
  .hero .btn-row { gap: 10px; }
  .hero .btn-row .btn { width: 100%; }
}

@media (max-width: 980px) {
  .hero { padding: 40px 0 56px; }
  .hero__grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .hero__art { order: 2; }
}

/* ---------------- 信任区：能力三卡 ---------------- */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 44px;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 28px 26px;
  box-shadow: var(--shadow);
}

.card__ico {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: var(--warm);
  color: var(--ink);
}
.card__ico svg { width: 22px; height: 22px; }
.card__ico--pink { background: rgba(232, 16, 94, .09); color: var(--pink); }
.card__ico--green { background: rgba(47, 163, 86, .10); color: var(--green); }
.card__ico--gold { background: rgba(240, 208, 72, .22); color: #9A7B0B; }

.card p { margin-top: 10px; color: var(--ink-2); font-size: 15.5px; }

@media (max-width: 860px) {
  .cards-3 { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .card { padding: 22px 20px; }
}

/* ---------------- 三步 ---------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 46px;
  counter-reset: step;
}

.step { position: relative; }
.step__art {
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--warm);
  margin-bottom: 18px;
}
.step__art svg { display: block; width: 100%; }

.step__no {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--pink);
  margin-bottom: 8px;
}
.step__no i {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--pink);
  color: #fff;
  font-style: normal;
  font-size: 11px;
  display: grid;
  place-items: center;
  letter-spacing: 0;
}

.step p { margin-top: 8px; color: var(--ink-2); font-size: 15px; }

@media (max-width: 860px) {
  .steps { grid-template-columns: minmax(0, 1fr); gap: 30px; }
}

/* ---------------- 报告样例 ---------------- */
.sample__head { max-width: 62ch; }
.sample__head .lede { margin-top: 14px; }

.sample__shot {
  margin: 34px 0 0;
  position: relative;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--warm);
  box-shadow: var(--shadow-lg);
}
.sample__shot img { width: 100%; display: block; }
.sample__shot figcaption {
  padding: 11px 16px;
  font-size: 12px;
  color: var(--ink-3);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.sample__list {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 34px;
  max-width: 1000px;
}
.sample__list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  font-size: 15.5px;
  color: var(--ink-2);
}
.sample__list strong { color: var(--ink); font-weight: 650; }
.sample__list .tick {
  width: 22px; height: 22px; margin-top: 2px;
  border-radius: 7px; background: rgba(47, 163, 86, .12);
  color: var(--green); display: grid; place-items: center;
}
.sample__list .tick svg { width: 13px; height: 13px; }

@media (max-width: 860px) {
  .sample__list { grid-template-columns: minmax(0, 1fr); }
  .sample__shot { margin-top: 24px; }
}

/* ---------------- 定价预览 ---------------- */
.plans {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 46px;
  align-items: stretch;
}

.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 26px 22px 24px;
  box-shadow: var(--shadow);
}

.plan--hot {
  border-color: var(--pink);
  box-shadow: 0 14px 40px rgba(232, 16, 94, .16);
  transform: translateY(-6px);
}

.plan__badge {
  position: absolute;
  top: -11px;
  left: 22px;
  background: var(--pink);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
}

.plan__name { font-size: 15px; font-weight: 700; letter-spacing: .01em; }
.plan__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 12px 0 4px;
}
.plan__price b { font-size: 34px; font-weight: 800; letter-spacing: -.03em; }
.plan__price span { font-size: 13.5px; color: var(--ink-3); font-weight: 500; }
.plan__sub { font-size: 13px; color: var(--ink-3); min-height: 34px; }

.plan__feats {
  margin: 16px 0 22px;
  display: grid;
  gap: 9px;
  font-size: 14px;
  color: var(--ink-2);
  flex: 1;
}
.plan__feats li { display: grid; grid-template-columns: 16px minmax(0, 1fr); gap: 8px; }
.plan__feats svg { width: 14px; height: 14px; margin-top: 4px; color: var(--green); }

@media (max-width: 980px) {
  .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plan--hot { transform: none; }
}
@media (max-width: 560px) {
  .plans { grid-template-columns: minmax(0, 1fr); }
}

.plan-note {
  margin-top: 26px;
  font-size: 13px;
  color: var(--ink-3);
  text-align: center;
}

/* ---------------- FAQ ---------------- */
.faq { margin-top: 40px; border-top: 1px solid var(--line); max-width: 860px; }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 44px 22px 0;
  position: relative;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 9px; height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--ink-3);
  border-bottom: 2px solid var(--ink-3);
  transform: rotate(45deg);
  transition: transform .2s ease, margin-top .2s ease;
}
.faq details[open] summary::after {
  transform: rotate(-135deg);
  margin-top: -2px;
}
.faq .a {
  padding: 0 40px 24px 0;
  color: var(--ink-2);
  font-size: 15.5px;
  max-width: 80ch;
}
.faq .a p + p { margin-top: 10px; }

/* ---------------- 尾部 CTA ---------------- */
.cta-band {
  border-radius: 26px;
  padding: 52px 44px;
  background:
    radial-gradient(560px 300px at 12% 0%, rgba(240, 18, 126, .16), transparent 65%),
    linear-gradient(180deg, #1A1A1E, #101013);
  color: #fff;
  text-align: center;
}
.cta-band .h2 { color: #fff; }
.cta-band p { color: rgba(255, 255, 255, .72); margin: 14px auto 26px; max-width: 56ch; }
.cta-band .btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .34);
}
.cta-band .btn--ghost:hover { border-color: #fff; }

@media (max-width: 640px) {
  .cta-band { padding: 36px 22px; border-radius: 20px; }
}

/* ---------------- 页脚 ---------------- */
.site-foot {
  border-top: 1px solid var(--line);
  padding: 46px 0 40px;
  font-size: 14px;
  color: var(--ink-2);
  background: var(--warm);
}
.site-foot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, .8fr));
  gap: 34px;
}
.site-foot h4 {
  font-size: 12px;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 12px;
  font-weight: 700;
}
.site-foot li + li { margin-top: 9px; }
.site-foot a { text-decoration: none; }
.site-foot a:hover { color: var(--pink); }

.site-foot__brand p { margin-top: 10px; max-width: 34ch; font-size: 13.5px; color: var(--ink-3); }

.legal-line {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--line-2);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--ink-3);
}
.legal-line strong { color: var(--ink-2); font-weight: 650; }

@media (max-width: 860px) {
  .site-foot__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
}
@media (max-width: 480px) {
  .site-foot__grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------- 定价页专用 ---------------- */
.page-head {
  padding: 58px 0 8px;
  background:
    radial-gradient(760px 340px at 82% -20%, rgba(240, 18, 126, .10), transparent 62%),
    var(--white);
}
.page-head .h1 { margin-bottom: 16px; }

.billing-note {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 15px;
  border-radius: var(--r-pill);
  background: var(--warm);
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 22px;
}
.billing-note i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
}

.plans--wide { margin-top: 40px; }

.checkout-alt {
  margin-top: 9px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
}
.checkout-alt a { color: var(--ink-2); text-decoration: underline; text-underline-offset: 2px; }

.pending-note {
  display: none;
  margin-top: 14px;
  padding: 12px 15px;
  border-radius: var(--r-sm);
  background: #FFF8E6;
  border: 1px solid #F3E0AE;
  font-size: 13px;
  color: #7A5B00;
  line-height: 1.5;
}
.pending-note.on { display: block; }

.compare {
  margin-top: 26px;
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
.compare th, .compare td {
  text-align: left;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.compare th { font-weight: 650; color: var(--ink-3); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.compare td:first-child { color: var(--ink-2); }
.compare-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---------------- 法律页 ---------------- */
.legal-head {
  padding: 56px 0 30px;
  background: linear-gradient(180deg, #FDEDF4 0%, #FFFFFF 100%);
}
.legal-head .h1 { font-size: clamp(30px, 4.4vw, 48px); }
.legal-head__meta { margin-top: 16px; font-size: 13.5px; color: var(--ink-3); }

.legal-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 56px;
  padding: 12px 0 72px;
  align-items: start;
}

.doc { max-width: 78ch; }
.doc h2 {
  font-size: 22px;
  margin: 38px 0 12px;
  scroll-margin-top: 90px;
  letter-spacing: -.015em;
}
.doc h2:first-of-type { margin-top: 8px; }
.doc .lede { margin-bottom: 4px; }
.doc .lede + h2 { margin-top: 30px; }
.doc h3 { font-size: 17px; margin: 24px 0 8px; }
.doc p { margin: 12px 0; color: var(--ink-2); font-size: 16px; }
.doc ul { margin: 12px 0; padding-left: 0; }
.doc ul li {
  position: relative;
  padding-left: 20px;
  margin: 9px 0;
  color: var(--ink-2);
  font-size: 16px;
}
.doc ul li::before {
  content: "";
  position: absolute;
  left: 3px; top: .68em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--line-2);
}
.doc a { color: var(--pink); text-decoration: none; border-bottom: 1px solid rgba(232,16,94,.3); }
.doc strong { color: var(--ink); font-weight: 650; }

.callout {
  margin: 20px 0;
  padding: 18px 20px;
  border-radius: var(--r-sm);
  background: var(--warm);
  border-left: 3px solid var(--pink);
  font-size: 15px;
  color: var(--ink-2);
}
.callout strong { color: var(--ink); }

.toc {
  position: sticky;
  top: 92px;
  font-size: 13.5px;
  border-left: 1px solid var(--line);
  padding-left: 18px;
}
.toc h4 {
  font-size: 11px;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 12px;
}
.toc a {
  display: block;
  padding: 5px 0;
  color: var(--ink-2);
  text-decoration: none;
}
.toc a:hover { color: var(--pink); }

@media (max-width: 900px) {
  .legal-body { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .toc { display: none; }
}

/* ---------------- 小工具 ---------------- */
.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;
}

.skip {
  position: absolute; left: 12px; top: -60px;
  background: var(--ink); color: #fff;
  padding: 10px 16px; border-radius: var(--r-pill);
  text-decoration: none; font-size: 14px; z-index: 60;
  transition: top .18s ease;
}
.skip:focus { top: 12px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}