/* ==========================================================================
   快面AI 官网 - 共享样式体系
   Design tokens, layout primitives and shared components used by every page.
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-ink);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* height:auto 是必需的，不是冗余：本站的 <img> 都带 width/height 属性（占位防抖），
   一旦某条规则只写了 width 而没写 height，属性里的 height 就会被当成实际高度用，
   窄屏下图片会被横向压扁。首屏那张产品图就这么被压成过 310×602（原图 1.6:1）。 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

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

p {
  margin: 0;
}

svg {
  display: block;
}

/* ---- Design tokens --------------------------------------------------------- */
:root {
  /* Brand gradient */
  --gradient-primary: linear-gradient(123.6deg, #3a5bff 4.01%, #a535f0 105.16%);

  /* Text */
  --color-ink: #1d2939;      /* headings */
  --color-body: #364153;     /* body copy */
  --color-muted: #6a7282;    /* secondary copy */
  --color-muted-2: #99a1af;  /* footer copy */
  --color-faint: #98a2b3;

  /* Surfaces */
  --color-surface: #ffffff;
  --color-surface-alt: #f4f3ff; /* lavender section background */
  --color-surface-soft: #f3f4f6;
  --color-border: #e5e7eb;
  --color-border-soft: #f3f4f6;
  --color-footer-bg: #101828;
  --color-footer-border: #1d2939;

  /* Accents */
  --accent-purple: #7a5af8;
  --accent-purple-soft: #8d79ff;
  --accent-blue: #17a7ff;
  --accent-blue-soft: #29aeff;
  --accent-red: #ff6f58;
  --accent-red-soft: #ff745e;
  --accent-amber: #ffac19;
  --accent-amber-soft: #ffb128;
  --accent-orange: #ff8904;
  --accent-pink: #ff58d5;
  --accent-indigo: #4e6eff;
  --accent-blue-deep: #3b2eff;

  /* Radius */
  --radius-pill: 999px;
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 16px;

  /* Shadow */
  --shadow-card: 0px 30px 50px -32px rgba(107, 110, 148, 0.15);
  --shadow-soft: 0px 1px 2px 0 rgba(16, 24, 40, 0.05);

  /* Layout */
  --container-max: 1536px;
  --container-pad: clamp(20px, 5vw, 96px);
}

/* ---- Layout primitives ---------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: 96px;
}

@media (max-width: 900px) {
  .section {
    padding-block: 64px;
  }
}

.section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  max-width: 672px;
  margin-inline: auto;
}

.section-title {
  margin: 0;
  font-size: clamp(32px, 4.2vw, 50px);
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.25;
}

.section-subtitle {
  margin: 0;
  font-size: 16px;
  color: var(--color-ink);
  line-height: 1.6;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 12px 25px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  opacity: 0.9;
}

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

.btn svg {
  flex: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
}

.btn-outline {
  background: #fff;
  border-color: var(--color-border-soft);
  color: var(--color-ink);
}

.btn-dark {
  background: var(--color-ink);
  color: #fff;
}

.btn-slate {
  background: #364153;
  color: #fff;
}

.btn-pill-sm {
  padding: 8px 20px;
  height: 44px;
}

.btn-lg {
  height: 48px;
  padding-inline: 25px;
}

.btn-block {
  width: 100%;
}

/* ---- Site header ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--color-border-soft);
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1864px;
  margin-inline: auto;
  padding-inline: 28px;
}

.site-logo img {
  height: 32px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav__link {
  position: relative;
  padding: 24px 16px;
  font-size: 14px;
  color: var(--color-muted);
  white-space: nowrap;
}

.site-nav__link:hover {
  color: var(--color-ink);
}

.site-nav__link.is-active {
  color: var(--color-ink);
  font-weight: 700;
}

.site-nav__more {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--color-ink);
}

@media (max-width: 960px) {
  .site-header__bar {
    padding-block: 14px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: 73px 0 0 0;
    z-index: 90;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: 8px 24px 24px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    max-height: calc(100vh - 73px);
    overflow-y: auto;
  }

  .site-header.is-nav-open .site-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav__link {
    padding: 14px 4px;
    border-bottom: 1px solid var(--color-border-soft);
  }

  .site-header__actions .btn {
    padding: 10px 18px;
    font-size: 13px;
  }
}

/* ---- Footer ------------------------------------------------------------------ */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--color-footer-bg);
  padding-top: 96px;
  color: var(--color-muted-2);
}

.site-footer__glow {
  position: absolute;
  left: 50%;
  top: -420px;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background: var(--accent-blue-deep);
  filter: blur(160px);
  opacity: 0.55;
  pointer-events: none;
}

.site-footer__inner {
  position: relative;
  max-width: 1480px;
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 56px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 320px;
}

.site-footer__brand img {
  height: 32px;}

.site-footer__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.site-footer__social {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-top: 4px;
}

.site-footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  transition: background-color 0.2s ease;
}

.site-footer__social a:hover {
  background: rgba(255, 255, 255, 0.08);
}

.site-footer__cols {
  display: flex;
  flex-wrap: wrap;
  gap: 48px 64px;
}

.site-footer__col {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 120px;
}

.site-footer__col-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-muted-2);
}

.site-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-footer__col a,
.site-footer__col li {
  font-size: 14px;
  line-height: 1.5;
}

.site-footer__col a:hover {
  color: #fff;
}

.site-footer__qr {
  width: 100px;
  height: auto;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.site-footer__bottom {
  border-top: 1px solid var(--color-footer-border);
  padding-block: 20px;
  text-align: center;
  font-size: 14px;
}

@media (max-width: 720px) {
  .site-footer__top {
    flex-direction: column;
  }

  .site-footer__cols {
    gap: 32px 40px;
  }
}

/* ==========================================================================
   首页 (index.html)
   ========================================================================== */

/* ---- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}

.hero__glow {
  position: absolute;
  z-index: 0;
  top: 120px;
  left: 50%;
  width: min(1300px, 150vw);
  aspect-ratio: 13 / 10;
  transform: translateX(-50%);
  pointer-events: none;
}

.hero__glow span {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}

.hero__glow span:nth-child(1) {
  right: 8%;
  top: 0;
  width: 46%;
  height: 60%;
  background: var(--accent-indigo);
  opacity: 0.7;
}

.hero__glow span:nth-child(2) {
  left: 8%;
  top: 0;
  width: 46%;
  height: 60%;
  background: var(--accent-pink);
  opacity: 0.3;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.hero__top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  text-align: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  background: #fff;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.6);
  position: relative;
}

.hero__eyebrow::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(to right, rgba(255, 87, 213, 0.5), rgba(78, 110, 255, 0.5));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: -1;
}

.hero__eyebrow span {
  font-size: 15px;
  color: #000;
}

.hero__title {
  margin: 0;
  max-width: 90vw;
  font-size: clamp(32px, 5.5vw, 64px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-ink);
  white-space: nowrap;
}

.hero__subtitle {
  margin: 0;
  max-width: 90vw;
  font-size: clamp(16px, 2vw, 24px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-body);
}

.hero__subtitle br {
  content: "";
}

@media (max-width: 640px) {
  .hero__title {
    white-space: normal;
  }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.hero__frame {
  width: 100%;
  max-width: 1000px;
}

.hero__frame-inner {
  padding: 19px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid #fff;
}

.hero__frame img {
  width: 100%;
  height: auto;              /* 必须写，见下方 reset 里的说明 */
  border-radius: var(--radius-sm);
}

/* 四个悬浮标签各自再向外挪 100px —— 原位置离中间太近，会压在产品截图上。
   偏移写在 left/right 而不是 transform：transform 已被 badge-float-a/b
   的关键帧占用（translate + rotate），写在那儿会被动画整个覆盖掉。 */
.hero-badge {
  position: absolute;
  z-index: 2;
  display: block;
  width: auto;
  height: auto;
  filter: drop-shadow(0 10px 20px rgba(80, 60, 200, 0.08));
}

.hero-badge--1 {
  left: calc(2% - 100px);
  top: 8%;
  width: 179px;
}

.hero-badge--2 {
  left: calc(8% - 100px);
  top: 42%;
  width: 185px;
}

.hero-badge--3 {
  right: calc(2% - 100px);
  top: 15%;
  width: 190px;
}

.hero-badge--4 {
  right: calc(9% - 100px);
  top: 48%;
  width: 187px;
}

.hero-badge--1 {
  animation: badge-float-a 8.5s ease-in-out infinite;
  animation-delay: -1.2s;
}

.hero-badge--2 {
  animation: badge-float-b 10.5s ease-in-out infinite;
  animation-delay: -4.6s;
}

.hero-badge--3 {
  animation: badge-float-b 9.5s ease-in-out infinite reverse;
  animation-delay: -2.8s;
}

.hero-badge--4 {
  animation: badge-float-a 11.5s ease-in-out infinite;
  animation-delay: -6.4s;
}

@keyframes badge-float-a {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  22% {
    transform: translate(5px, -7px) rotate(0.7deg);
  }
  48% {
    transform: translate(-4px, -3px) rotate(-0.5deg);
  }
  74% {
    transform: translate(-6px, 5px) rotate(0.4deg);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

@keyframes badge-float-b {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  30% {
    transform: translate(-6px, 6px) rotate(-0.6deg);
  }
  58% {
    transform: translate(4px, 7px) rotate(0.5deg);
  }
  82% {
    transform: translate(6px, -5px) rotate(-0.3deg);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-badge--1,
  .hero-badge--2,
  .hero-badge--3,
  .hero-badge--4 {
    animation: none;
  }
}

@media (max-width: 1280px) {
  .hero-badge {
    display: none;
  }
}

/* ---- Stats band ----------------------------------------------------------- */
.stats {
  position: relative;
  margin-top: 56px;
  padding-block: 56px;
  background: linear-gradient(180deg, #6a53f5 0%, var(--accent-blue-deep) 100%);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  color: #f4f3ff;
}

.stat__value {
  margin: 0;
  font-size: 36px;
  font-weight: 700;
}

.stat__label {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.stat__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 860px) {
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 40px;
  }
}

/* ---- Feature tabs section -------------------------------------------------- */
.tabs-section {
  background: var(--color-surface-alt);
}

.tabs-section .section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  max-width: max-content;
  margin-inline: auto;
}

.tab-list__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: none;
  background: transparent;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-muted);
  white-space: nowrap;
}

.tab-list__btn svg {
  width: 32px;
  height: 32px;
}

.tab-list__btn.is-active {
  background: #fff;
  color: var(--color-ink);
}

.tab-panel {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  margin-top: 28px;
}

.tab-panel.is-active {
  display: flex;
}

.tab-panel__frame {
  width: 100%;
  max-width: 1008px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(to right, rgba(255, 88, 213, 0.2), rgba(78, 110, 255, 0.2));
}

/* 原来写死 `aspect-ratio: 936/535` + `object-fit: cover`。产品截图是 1800×1125
   （更方），cover 会把上下两端裁掉——顶栏和底部内容都看不见。
   改为按图片自身比例完整显示，容器高度随图走。 */
.tab-panel__frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.tab-panel__desc {
  max-width: 720px;
  text-align: center;
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.7;
}

/* ---- Product advantages ---------------------------------------------------- */
.advantages {
  background: var(--color-surface-alt);
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.advantage-card {
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding: 37px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.advantage-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 50px;
  background: linear-gradient(to bottom, var(--accent-purple) 0%, rgba(122, 90, 248, 0) 100%);
}

.advantage-card__icon svg {
  width: 40px;
  height: 40px;
}

.advantage-card h3 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
}

.advantage-card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-muted);
}

@media (max-width: 1100px) {
  .advantages__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .advantages__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Testimonials ----------------------------------------------------------- */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.testimonial-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border-soft);
}

.testimonial-card__person {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-card__avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  box-shadow: 0 0 0 2px #fff;
  flex: none;
}

.testimonial-card__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
}

.testimonial-card__role {
  margin: 0;
  font-size: 13px;
  color: var(--color-muted);
}

.testimonial-card__quote {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
}

.testimonials__more {
  display: flex;
  justify-content: center;
  margin-top: 48px;
}

.testimonials__more .btn {
  padding: 15px 25px;
  box-shadow: var(--shadow-soft);
}

@media (max-width: 1000px) {
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- FAQ ---------------------------------------------------------------------- */
.faq {
  background: var(--color-surface-alt);
}

.faq__list {
  max-width: 720px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding-block: 20px;
}

.faq-item__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  border: none;
  background: none;
  padding: 0;
  text-align: left;
}

.faq-item__trigger h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
}

.faq-item__icon {
  position: relative;
  flex: none;
  width: 24px;
  height: 24px;
}

.faq-item__icon::before,
.faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-faint);
  transform: translate(-50%, -50%);
}

.faq-item__icon::before {
  width: 14px;
  height: 2px;
}

.faq-item__icon::after {
  width: 2px;
  height: 14px;
  transition: transform 0.2s ease;
}

.faq-item.is-open .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.faq-item__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.25s ease;
}

.faq-item.is-open .faq-item__panel {
  max-height: 400px;
}

.faq-item__panel p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
}

/* ==========================================================================
   套餐价格 (price.html)
   ========================================================================== */

.price-hero {
  position: relative;
  overflow: hidden;
  padding-block: 112px 96px;
  background: var(--color-surface-alt);
}

.price-hero__glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.price-hero__glow span {
  position: absolute;
  top: 10%;
  width: 32%;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(150px);
}

.price-hero__glow span:nth-child(1) {
  left: 38%;
  background: var(--accent-pink);
  opacity: 0.2;
}

.price-hero__glow span:nth-child(2) {
  left: 52%;
  background: var(--accent-indigo);
  opacity: 0.1;
}

.price-hero__inner {
  position: relative;
  z-index: 1;
}

.price-hero .section-head {
  max-width: 672px;
}

.price-hero__title {
  margin: 0;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  color: var(--color-ink);
}

.price-hero__subtitle {
  margin: 0;
  max-width: 576px;
  font-size: 16px;
  color: var(--color-ink);
}

/* Billing period toggle */
.billing-toggle {
  display: flex;
  justify-content: center;
  margin-top: 64px;
}

.billing-toggle__track {
  display: inline-flex;
  padding: 4px;
  border-radius: var(--radius-pill);
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.billing-toggle__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  padding: 8px 24px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: var(--color-body);
}

.billing-toggle__btn.is-active {
  background: var(--color-ink);
  color: #fff;
}

.billing-toggle__badge {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--accent-orange);
  color: #fff;
  font-size: 12px;
}

/* Pricing cards */
.price-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1156px;
  margin: 64px auto 0;
}

.price-card {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 32px;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-soft);
  border: 1px solid transparent;
}

.price-card--featured {
  border-color: #a4b6ff;
  box-shadow: 0 0 0 1px #a4b6ff, 0 20px 40px -20px rgba(58, 91, 255, 0.35);
}

.price-card__head {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.price-card__name-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.price-card__name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}

.price-card__popular {
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-alt);
  color: var(--accent-purple);
  font-size: 12px;
  white-space: nowrap;
}

.price-card__price {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.price-card__amount {
  margin: 0;
  font-size: 36px;
  font-weight: 700;
  color: var(--color-ink);
  white-space: nowrap;
}

.price-card__period {
  font-size: 14px;
  color: var(--color-muted);
  white-space: nowrap;
}

.price-card__blurb {
  margin: 0;
  min-height: 42px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-muted);
}

.price-card__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.price-card__list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--color-ink);
}

.price-card__list li svg {
  flex: none;
  margin-top: 2px;
}

/* li 是 flex 容器：直接写在里面的 <strong> 会被当成独立 flex item，
   导致「有效期 30 天」被从中间拆成两行。文字必须整体包在一个 span 里。 */
.price-card__list li > span {
  flex: 1;
}

@media (max-width: 1100px) {
  .price-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 720px;
  }
}

@media (max-width: 620px) {
  .price-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   占位页面（AI面试 / 模拟面试 / 使用教程 / 关于我们）
   ========================================================================== */

.placeholder-hero {
  position: relative;
  overflow: hidden;
  padding-block: 112px 140px;
  background: var(--color-surface-alt);
  text-align: center;
}

.placeholder-hero__glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.placeholder-hero__glow span {
  position: absolute;
  top: 0;
  left: 50%;
  width: 32%;
  aspect-ratio: 1;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--accent-indigo);
  opacity: 0.12;
  filter: blur(150px);
}

.placeholder-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.placeholder-hero__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 88px;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.placeholder-hero__title {
  margin: 0;
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 900;
  color: var(--color-ink);
}

.placeholder-hero__desc {
  margin: 0;
  max-width: 480px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
}

.placeholder-hero__actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

/* ==========================================================================
   支持面试平台 —— logo 墙窄条（index.html，位于 Hero/Stats 之下）
   ========================================================================== */
.platforms {
  padding-block: 80px 64px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-soft);
}

.platforms__title {
  margin: 0;
  text-align: center;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-ink);
}

.platforms__subtitle {
  margin: 14px 0 0;
  text-align: center;
  font-size: 16px;
  color: var(--color-body);
}

/* 素材全部是 96px 宽、高度 22~71px 不等。若按高度归一，96x22 的 Teams 会被拉到 148px
   宽、而 96x71 的领英只剩 46px 宽，一排下来大小失控。所以改成**固定格子 + 按原宽显示**：
   每个 li 是等宽等高的盒子，logo 在里面居中，视觉重量才一致。
   格子 150px + 间距 24px，容器 1020px 正好一行 6 个 → 11 个稳定折成 6 + 5，
   末行由 justify-content:center 自动居中，不会留孤儿。 */
.platforms__list {
  margin: 28px auto 0;
  padding: 0;
  max-width: 1020px;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.platforms__list li {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 150px;
  height: 48px;
}

.platforms__list img {
  max-width: 112px;
  max-height: 44px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.55;
  transition: filter 0.2s ease, opacity 0.2s ease;
}

.platforms__list img:hover {
  filter: grayscale(0);
  opacity: 1;
}

@media (max-width: 720px) {
  .platforms {
    padding-block: 40px 32px;
  }

  .platforms__list {
    gap: 12px;
  }

  .platforms__list li {
    width: 104px;
    height: 36px;
  }

  .platforms__list img {
    max-width: 84px;
    max-height: 32px;
  }
}

/* ==========================================================================
   顶栏「登录」文字链（在「免费试用」按钮左侧）
   ========================================================================== */
.site-header__login {
  padding-inline: 4px;
  white-space: nowrap;
}

/* ==========================================================================
   页脚补充：未开通社交账号的禁用态、公众号二维码占位、备案号行
   ========================================================================== */
.site-footer__social a.is-disabled {
  cursor: default;
  opacity: 0.45;
}

.site-footer__social a.is-disabled:hover {
  background: transparent;
}

.site-footer__qr-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 117px;
  border: 1px dashed var(--color-footer-border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  text-align: center;
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-muted-2);
}

.site-footer__bottom p {
  margin: 0;
}

.site-footer__bottom p + p {
  margin-top: 6px;
}

.site-footer__bottom a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ==========================================================================
   套餐价格页补充
   ========================================================================== */
/* 原设计是 Free/Plus/Pro/Enterprise 四栏；我们只有三档次数包，改 3 列后
   卡片更宽、功能清单读起来更舒服。 */
.price-grid--3 {
  grid-template-columns: repeat(3, 1fr);
  max-width: 960px;
}

.price-card__period s {
  opacity: 0.7;
}

/* 次数规则卡：复用 advantage-card 的栅格与阴影，但去掉顶部图标块 —— 这里是
   规则说明，配图标反而分散注意力。 */
.advantage-card--plain {
  padding-top: 32px;
}

.advantage-card--plain strong {
  color: var(--color-ink);
  font-weight: 600;
}

@media (max-width: 900px) {
  .price-grid--3 {
    grid-template-columns: 1fr;
    max-width: 460px;
  }
}

/* ==========================================================================
   产品页通用组件（mock-interview.html / ai-interview.html）
   —— .page-hero 有意与 .price-hero 分开命名：后者语义绑死在价格页，
      产品页复用会让后来改价格页的人不敢动。
   ========================================================================== */
.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: 104px 80px;
  background: var(--color-surface-alt);
}

.page-hero__glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-hero__glow span {
  position: absolute;
  top: 6%;
  width: 34%;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(150px);
}

.page-hero__glow span:nth-child(1) {
  left: 12%;
  background: var(--accent-pink);
  opacity: 0.18;
}

.page-hero__glow span:nth-child(2) {
  right: 10%;
  background: var(--accent-indigo);
  opacity: 0.16;
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow-soft);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-indigo);
}

.page-hero__title {
  margin: 20px 0 0;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-ink);
}

.page-hero__subtitle {
  margin: 16px auto 0;
  max-width: 680px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
}

.page-hero__actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.page-hero__shot {
  margin: 56px auto 0;
  max-width: 1000px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(114, 92, 255, 0.18), rgba(255, 88, 213, 0.14));
}

.page-hero__shot img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: var(--shadow-card);
}

/* ---- 步骤流 ---- */
.steps {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-card {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.step-card__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #3a5bff, #a535f0);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.step-card h3 {
  margin: 16px 0 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
}

.step-card p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---- 图文交替行 ---- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}

.feature-row + .feature-row {
  margin-top: 88px;
}

.feature-row--reverse .feature-row__media {
  order: 2;
}

.feature-row__media {
  padding: 10px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(114, 92, 255, 0.16), rgba(255, 88, 213, 0.12));
}

.feature-row__media img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: var(--shadow-card);
}

.feature-row__body h2 {
  margin: 0;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
}

.feature-row__body > p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-body);
}

.feature-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-body);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3a5bff, #a535f0);
  opacity: 0.9;
}

.feature-list strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* ---- 维度标签云（报告说明用） ---- */
.dim-tags {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dim-tags li {
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 14px;
  color: var(--color-body);
}

/* ---- 底部 CTA 条 ---- */
.cta-band {
  padding-block: 72px;
  background: var(--color-surface-alt);
  text-align: center;
}

.cta-band h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: var(--color-ink);
}

.cta-band p {
  margin: 14px 0 0;
  font-size: 16px;
  color: var(--color-body);
}

.cta-band__actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

@media (max-width: 960px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-row--reverse .feature-row__media {
    order: 0;
  }

  .feature-row + .feature-row {
    margin-top: 64px;
  }
}

@media (max-width: 560px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

/* 浅紫底交替区块 —— 避免在 HTML 里写 style="background: ..." 内联样式 */
.section--alt {
  background: var(--color-surface-alt);
}

/* ==========================================================================
   AI 面试辅助页：三档提示风格对比
   ========================================================================== */
.steps--3 {
  grid-template-columns: repeat(3, 1fr);
}

.style-question {
  margin: 48px auto 0;
  max-width: 900px;
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-ink);
}

.style-question__tag {
  display: inline-block;
  margin-right: 10px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--gradient-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  vertical-align: 2px;
}

.style-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.style-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

/* 三档不分主次——原来给 standard 挂了「推荐」角标，显得另外两档没用。
   改用「详略指示点」表达差异：亮的点越多，给的内容越完整。 */
.style-card__head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.style-card__dots {
  display: inline-flex;
  gap: 3px;
}

.style-card__dots i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border);
}

.style-card__dots i.on {
  background: var(--accent-indigo);
}

.style-card__name {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--color-ink);
}

.style-card__level {
  margin: 0 0 0 auto;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(78, 110, 255, 0.1);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-indigo);
}

.style-card__desc {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
}

/* 模拟产品里提示卡的观感：浅底、小字、行距紧一点 */
.style-card__body {
  flex: 1;
  margin-top: 16px;
  padding: 16px;
  border-radius: 12px;
  background: var(--color-surface-soft);
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-body);
}

.style-card__body p {
  margin: 0;
}

.style-card__body p + p {
  margin-top: 6px;
}

.style-card__extra {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-ink);
}

/* 示例文案不是真实输出，必须显式声明，避免被当成效果承诺 */
.style-note {
  margin: 20px auto 0;
  max-width: 900px;
  text-align: center;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

@media (max-width: 960px) {
  .steps--3,
  .style-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   使用教程（文档式单页：左侧目录 + 右侧正文）
   ========================================================================== */
.doc-hero {
  padding-block: 96px 64px;
  background: var(--color-surface-alt);
  text-align: center;
}

.doc-hero__title {
  margin: 0;
  font-size: clamp(32px, 4.2vw, 50px);
  font-weight: 700;
  color: var(--color-ink);
}

.doc-hero__subtitle {
  margin: 12px 0 0;
  font-size: 16px;
  color: var(--color-body);
}

.doc-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  padding-block: 64px 88px;
  align-items: start;
}

/* 目录跟随滚动。top 值要大于顶栏高度，否则会被压住。 */
.doc-nav {
  position: sticky;
  top: 96px;
}

.doc-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.doc-nav__group + .doc-nav__group {
  margin-top: 24px;
}

.doc-nav__title {
  display: block;
  padding-bottom: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-ink);
}

.doc-nav__sub {
  display: block;
  padding: 7px 0 7px 12px;
  border-left: 2px solid var(--color-border);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-muted);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.doc-nav__sub:hover {
  color: var(--accent-indigo);
  border-left-color: var(--accent-indigo);
}

.doc-section + .doc-section {
  margin-top: 64px;
}

.doc-section__title {
  margin: 0 0 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-ink);
}

/* 锚点滚动时给固定顶栏留出空间 */
.doc-article {
  scroll-margin-top: 88px;
}

.doc-section {
  scroll-margin-top: 88px;
}

.doc-article h3 {
  margin: 40px 0 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
}

.doc-article h4 {
  margin: 28px 0 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
}

.doc-article p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-body);
}

.doc-article a {
  color: var(--accent-indigo);
  text-decoration: underline;
}

/* 两个坑：
   1) 全局 reset 有 `ul { list-style: none }`，这里必须显式把圆点加回来（ol 不受影响）；
   2) 不要用 flex —— flex 容器的子项不渲染 ::marker，符号会整排消失。 */
.doc-steps,
.doc-list {
  margin: 16px 0 0;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-body);
}

.doc-list {
  list-style: disc;
}

.doc-callout .doc-list {
  margin-top: 12px;
}

.doc-steps li + li,
.doc-list li + li {
  margin-top: 10px;
}

.doc-steps strong,
.doc-list strong,
.doc-article p strong {
  color: var(--color-ink);
  font-weight: 600;
}

.doc-table {
  margin-top: 18px;
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.7;
}

.doc-table th,
.doc-table td {
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
  color: var(--color-body);
}

.doc-table th {
  background: var(--color-surface-soft);
  color: var(--color-ink);
  font-weight: 600;
  white-space: nowrap;
}

/* 表格在窄屏会溢出，套一层横向滚动比压缩字号可读 */
.doc-article {
  overflow-x: auto;
}

.doc-tip {
  margin-top: 18px !important;
  padding: 14px 18px;
  border-left: 3px solid var(--accent-amber);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 172, 25, 0.08);
  font-size: 14px !important;
}

.doc-callout {
  margin-top: 22px;
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
}

.doc-callout > p:first-child {
  margin-top: 0;
}

@media (max-width: 900px) {
  .doc-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .doc-nav {
    position: static;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
  }
}

/* ==========================================================================
   价格页：限时折扣横幅 + 到手价展示
   ========================================================================== */
.price-banner {
  position: relative;
  z-index: 1;
  margin: 32px auto 0;
  max-width: 720px;
  padding: 14px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 111, 88, 0.28);
  background: rgba(255, 111, 88, 0.08);
  text-align: center;
  font-size: 15px;
  color: var(--color-body);
}

.price-banner strong {
  color: var(--accent-red);
  font-weight: 700;
}

.price-banner__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--accent-red);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

/* 主数字是「到手价」（首购 × 限时折扣），原价与折扣比例并排放在它下面，
   让用户一眼看到省了多少，而不用自己算。 */
.price-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  white-space: nowrap;
  gap: 10px;
  margin-top: 8px;
}

.price-card__origin {
  font-size: 14px;
  color: var(--color-muted);
}

.price-card__origin s {
  opacity: 0.75;
}

.price-card__off {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 111, 88, 0.12);
  color: var(--accent-red);
  font-size: 12px;
  font-weight: 700;
}

.price-card__calc {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--color-muted);
}

.price-card__list strong {
  color: var(--color-ink);
  font-weight: 600;
}

.price-foot {
  position: relative;
  z-index: 1;
  margin: 36px auto 0;
  max-width: 760px;
  text-align: center;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-muted);
}

.price-foot strong {
  color: var(--color-body);
  font-weight: 600;
}

/* ==========================================================================
   教程正文配图
   ========================================================================== */
.doc-figure {
  margin: 22px 0 0;
  padding: 0;
}

.doc-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.doc-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

/* 教程 hero 少了搜索框，底部留白收一点，别显得空 */
.doc-hero {
  padding-block: 96px 72px;
}